Roller conveyor

Abstract

To provide a roller conveyor which has improved diversity of objects to be conveyed, stability of conveyance, safety and quietness.SOLUTION: In a roller conveyor, a first conveyor roller and a second conveyor roller which form a pair with different forms are arrayed alternately at a certain pitch. In the first conveyor roller and the second conveyor roller, at a rotary shaft, a hollow columnar column body conveyance part which has a substantially constant outer diameter and height, with an axial line shared with the conveyor rollers and which does not include the rotary shaft is disposed at a longer interval than the height and having a positional relation in which the first conveyor roller and the column body conveyance part of the second conveyor roller are not overlapped, and at the column body conveyance part, a vibration control mechanism and / or a noise silencing mechanism is provided in the first conveyor roller and the second conveyor roller. In the purposeful vibration control property and / or noise silencing property zigzag arrangement type roller conveyor, it is constituted so as to have a positional relationship in which the rotary shaft forming an interval of the column body conveyance part of the second conveyor roller opposes to an outside surface of the column body conveyance part of the first conveyor roller without coming into contact with it.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to, for example, a roller conveyor, and more particularly to a roller conveyor having characteristic structures and materials of conveyor rollers that constitute the roller conveyor. [Background technology]

[0002] The principles and tools of heavy-duty transport technology using rollers and hemp canvas, which were invented in ancient civilizations to transport heavy objects, have been passed down through the generations, and in modern times, conveyors have evolved with amazing improvements in materials and mechanisms into devices that continuously transport goods, industrial materials, soil, semi-finished products, food ingredients, etc. As defined as "machines for continuously transporting loads" (Japanese Industrial Standards (JIS)), conveyors have not only contributed to industrial development around the world as a fundamental technology that forms the main lines of transport for goods common to all industries, but are also no longer limited to transporting "loads," but are also used to transport people and food, for example, on walking paths and in conveyor belt sushi restaurants.

[0003] Such conveyors are roughly divided into roller conveyors, which use rollers as their base, and belt conveyors, which use hemp canvas as their base, and the two types of conveyors are used according to the purpose of use in each industrial field. This is because belt conveyors and roller conveyors each have their own unique characteristics.

[0004] Belt conveyors are widely used in the construction, food, and automobile industries because they can transport long distances at low cost, have a large frictional force, and are suitable for transporting various types of relatively light and small-volume items such as coal and gravel, so-called bulk items. In the logistics industry, they are used not only for the same reasons, but also in processes that require stable and safe transport of goods because of their high shock absorption. Furthermore, since they are used indoors, they are quiet and do not produce impact sounds due to collisions with goods. As such, belt conveyors have the characteristic of being a transport means that can transport goods quietly without damaging them, regardless of the type of goods, because they are wound around a rotating pulley and run on an endless belt made of flexible resin, canvas, or the like, which has a large frictional force.

[0005] On the other hand, roller conveyors are widely used in various processes in the logistics industry because the frictional force of the rollers is small and they are suitable for transporting relatively heavy and large-volume transported goods that are aggregated into units such as cardboard boxes and containers, i.e., bulk goods. In addition, roller conveyors can be given a sorting function that can freely change the transport direction of transported goods by introducing an accumulation function that controls the transport speed on a roller-by-roller basis to close the gap between transported goods and temporarily store them, and by inserting various narrow-width transfer techniques into the gaps between the rollers or the rollers themselves, so that they are indispensable conveyors in the logistics industry, where products must be delivered from producers to consumers and complex transport such as sorting and aggregation processes is required. And since the rollers rotate independently to move the transported goods, they can function as flexible free-curve conveyors that can expand and contract within a predetermined range. Furthermore, roller conveyors have the great advantage that they can be used as energy-saving conveyors that do not require power by using the inclination, that is, gravity conveyors, and are suitable for a decarbonized society. In other words, a roller conveyor transports cargo by placing it on rollers made of low-friction metal or the like that are arranged at a predetermined interval and rotate, and is therefore characterized as an energy-saving transport means that can freely control the direction and speed to transport relatively heavy and voluminous goods.

[0006] In this way, belt conveyors and roller conveyors have characteristics that the other does not have, and although it is best to use each in the right place, efforts are being made to create conveyors with new added value and expand the uses by giving each of the belt conveyors and roller conveyors characteristics that the other does not have.

[0007] In belt conveyors, by changing plastic and canvas conveyor belts to steel conveyor belts or wire conveyor belts, mechanical, thermal and chemical stability is given, and it has become possible to handle heavy items such as attaché cases and items that come into contact with heat or chemicals, particularly in airports, and it has been successful in expanding its applications. In addition, by changing the plastic conveyor belt to a conveyor belt made of a material with a low friction coefficient and giving it a surface shape with a small contact area with the items, it has been possible to improve the sliding properties and also to give it a sorting function and an accumulating function. This is thought to be because belt conveyors are used in industrial fields that handle loose items.

[0008] On the other hand, roller conveyors use rollers coated with resin with high friction and small diameter roller conveyors to realize the advantages of belt conveyors that can convey objects quietly without damaging them regardless of the shape of the objects being conveyed. However, the support of objects by multiple rollers, the gap between rollers, and the line contact with objects, which are the source of the improvement of the function of roller conveyors, are disadvantages. In particular, the superiority of belt conveyors is remarkable when comparing the two in curved conveyors that efficiently arrange the conveying path in a limited space. In roller curved conveyors, the gap between conveyor rollers is wider, so the shape of the objects is more restricted, and even if the object is large in volume, one corner of the object may collide with the roller, which causes problems with the safety and quietness of the objects. In addition, in curved conveyors, centrifugal force acts on the objects being conveyed, so in roller curved conveyors, problems with the stability of the conveying direction due to the sliding of the objects, and the safety problems of the objects due to the collision of the objects with the rollers and falling off the rollers are more prominent. It is difficult to solve these problems even with a curved roller conveyor having small diameter rollers whose surfaces are coated with a resin that exerts a large frictional force.

[0009] Therefore, as a measure to quickly solve this problem, it is easy to think of replacing the roller conveyor with a belt conveyor. However, in a curved conveyor, replacing the roller conveyor with a belt conveyor impairs the following excellent functions of the roller conveyor. It is difficult to transport heavy objects, and there is a limitation on the weight of the objects that can be transported, which is different from that of the roller conveyor. To solve this, there are measures such as installing a belt receiver at the bottom of the belt between the carrier rollers and replacing the resin and canvas belts with stainless steel belts and wire belts, but problems with the wear of the belt and problems related to the sliding properties equivalent to those of the roller conveyor arise. In this case, too, sliding properties can be imparted by changing the surface shape and material of the conveyor belt, but problems related to the sliding properties equivalent to those of the roller conveyor arise. This is thought to be because the roller conveyor is used in industrial fields that handle bulky objects. In particular, the loss of the excellent accumulating function cannot be avoided. Furthermore, it is considered extremely difficult to replace flexible free-roller conveyors that use independently rotating rollers and can bend and expand, and gravity conveyors that use an incline and do not require power, with belt conveyors. Energy-saving transport devices such as gravity conveyors are essential to realizing a carbon-free society, and the loss of this function is immeasurable.

[0010] In other words, the rollers of a roller conveyor are the source of the roller conveyor's unique features, but there are problems that arise from the rollers, namely, the problem of the freedom of shape of the transported goods being limited for goods with a large bottom surface, the problem of stability in the transport direction due to the sliding of the transported goods, the problem of safety of the transported goods due to collisions or falling of the transported goods with the conveyor due to sliding, and the problem of safety and quietness of the transported goods due to collisions of the transported goods with the metal rollers. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Japanese Patent Application Publication No. 01-313203 [Patent Document 2] JP 2016-47769 A [Patent Document 3] Patent Publication No. 2021-84847 [Patent Document 4] JP 2003-172390 A [Patent Document 5] International Publication No. 2022 / 191113 [Patent Document 6] JP 2022-182683 A [Non-patent literature]

[0012] [Non-Patent Document 1] Kazuyoshi Iida, "Environmentally Friendly Sound Absorbing Materials", Journal of the Acoustical Society of Japan, Vol. 67, No. 2, pp. 81-86 (2011) [Non-Patent Document 2] Shuichi Akasaka, "Viscoelasticity and Mechanical Model of Polymeric Materials as Acoustic Materials", Journal of the Acoustical Society of Japan, Vol. 69, No. 8, pp. 419-424 (2013) [Non-Patent Document 3] UBE Scientific Analysis Center, Inc., "Solid Dynamic Viscoelastic Measurement of Nylon 6 Sheet," [on line], [Retrieved July 14, 2023], Internet<https: / / www.ube.co.jp / usal / documents / p320_141.htm> [Non-Patent Document 4] Hirohisa Yoshida, Takeshi Yamada, "Fundamentals and Applications of Rheology (1)", Journal of the Japan Color Materials Association, Vol. 82, No. 9, pp. 397-402 (2009) [Non-Patent Document 5] Hirohisa Yoshida, Takeshi Yamada, "Fundamentals and Applications of Rheology (2)", Journal of the Japan Color Materials Association, Vol. 82, No. 10, pp. 447-453 (2009) [Non-Patent Document 6] Masami Tomikawa, Tokuki Fujimoto, "

[86] Properties of Polycarbonate, Part 7: Dynamic Viscoelasticity of Polycarbonate and Its Derivatives," Polymer Chemistry, Vol. 25, No. 282, pp. 625-633 (1968) [Non-Patent Document 7] Masashi Inoue, Soichiro Nomura, Takeshi Ogawa, Kunihiro Ozaki, "Sub-dispersion of bisphenol A polycarbonate - Study by dynamic birefringence", Materials, Vol. 49, No. 12, pp. 1298-1300 (2000) [Non-Patent Document 8] Unitika Ltd. Resin Division, "Arylate Resin U Polymer (registered trademark) U-100 (neat polymer)", [on line], [searched July 14, 2023], Internet<https: / / www.unitika.co.jp / plastics / products / par / upolymer / u-100 / > Summary of the Invention [Problem to be solved by the invention]

[0013] As explained in the Background Art, roller conveyors are indispensable conveying devices for logistics centers and the like that require complicated conveying routes for sorting and consolidation processes, but they are usually limited to conveyed objects that can be received by four or more conveyor rollers, and conveyance is by linear contact with metal rollers that have low friction and high hardness, so there are problems with the degree of freedom of shape of the conveyed object being limited to conveyed objects with large bottom surfaces, problems with stability of the conveying direction due to the sliding of the conveyed object, problems with the safety of the conveyed object due to collision or falling of the conveyed object with the conveyor due to sliding, and problems with safety and quietness of the conveyed object due to collision of the conveyed object with the metal rollers. These problems are particularly prominent in curved roller conveyors.

[0014] Therefore, the present invention aims to provide a roller conveyor that overcomes the above problems and improves the versatility of conveyed objects, as well as the stability, safety, and quietness of conveying. A roller conveyor that solves the above problems is expected to expand the uses of roller conveyors, further increase logistics efficiency, and make a great contribution to the innovation of logistics systems, without compromising the inherent advantages of roller conveyors, such as the accumulating function and the ability to freely control the conveying direction of objects by utilizing the roller gap. [Means for solving the problem]

[0015] Techniques that are believed to be key to solving the above problems are found in Patent Documents 1-6 and Non-Patent Documents 1-8.

[0016] First, as recognized in Patent Documents 1 to 3 and Patent Documents 5 and 6, the roller conveyor has an external configuration and arrangement in which the rollers formed around the shaft of the conveyor roller that come into contact with the transported object are divided into convex parts that reduce the contact area with the transported object and concave parts that fit into the convex parts without contacting them, as in a wheel conveyor, and these are arranged in a staggered pattern to form a conveyor belt composed of small rollers. This external configuration and arrangement can extremely narrow the length of the widthwise gap between the rollers of a conventional roller conveyor, and sheet-like transported objects can be transported without falling, and there is a high possibility that restrictions on the transported object will be alleviated. In addition, the contact area between the rollers of this external configuration and arrangement and the transported object is significantly reduced compared to the contact area between the rollers of a conventional roller conveyor and the transported object, and the normal force against the transported object increases, so that the friction force proportional to the contact force increases, and it is considered that the sliding of the transported object is suppressed. In addition, it is suggested that the numerous convex parts contact and bite into the bottom surface of the transported object from all directions, thereby suppressing the sliding of the transported object.

[0017] Secondly, Patent Documents 4 to 6 propose individual roller structures and materials that have vibration damping and anti-slip functions while maintaining the strength of the roller. By using annular composites as vanes and foam or elastic materials for the rollers, it is possible to prevent the transported goods from sliding on the rollers, and to reduce the impact on the transported goods, thereby preventing damage to the goods and noise caused by collisions between the goods and the rollers.

[0018] Thirdly, Non-Patent Documents 1 to 8 provide findings on structures and materials that can reduce noise. In particular, they suggest the usefulness of using materials with excellent shock absorbing and sound absorbing properties for conveyor rollers.

[0019] The inventors have considered the above-mentioned conventional techniques and findings, and have produced conveyor rollers of various structures and materials, and have conducted experiments and evaluations on many roller conveyors using these roller rollers, in order to find a configuration that improves the stability, safety, and quietness of conveyance and has few restrictions on the conveyed objects, without compromising the advantages of the roller conveyor based on the gap between the conveyor rollers and the low friction force of the conveyor roller surface. As a result, they have found that the intended roller conveyor is a roller conveyor that is appropriately configured with conveyor rollers that are of a shape and material with excellent shock absorption and sound absorption functions and that has a contact portion with the conveyed object appropriately arranged, and that a staggered roller conveyor with suitable vibration damping and quietness can be provided. Furthermore, they have developed auxiliary members suitable for constructing this staggered roller conveyor, leading to the completion of the present invention.

[0020] That is, the present invention provides a straight roller conveyor in which a first straight conveyor roller and a second straight conveyor roller, which have a common rotating shaft and are substantially equal in width but different in shape, are arranged alternately at a substantially constant axial interval of the rotating shaft so that both ends are aligned, the first straight conveyor roller and the second straight conveyor roller each have a rotating shaft, a hollow cylindrical columnar transport section not including a rotating shaft, which has a substantially constant outer diameter and height with the axis line shared with the first straight conveyor roller and the second straight conveyor roller as a center line, and the hollow cylindrical columnar transport section the first straight conveyor roller and the second straight conveyor roller are disposed at a distance longer than the height of the first straight conveyor roller and in a positional relationship in which the pillar body transporting portions of the first straight conveyor roller and the pillar body transporting portions of the second straight conveyor roller do not overlap, and all of these pillar body transporting portions are equipped with a vibration damping mechanism and / or a noise reduction mechanism including a polymer viscoelastic material, and the straight roller conveyor is characterized in that the pillar body transporting portions of the first straight conveyor roller and the second straight conveyor roller are disposed at a distance longer than the height of the first straight conveyor roller and in which the pillar body transporting portions of the second straight conveyor roller are disposed at a distance longer than the height of the first straight conveyor roller and are disposed in a positional relationship in which they do not overlap, and all of these pillar body transporting portions are equipped with a vibration damping mechanism and / or a noise reduction mechanism including a polymer viscoelastic material, and the straight roller conveyor is characterized in that the pillar body transporting portions of the first straight conveyor roller and the second straight conveyor roller are disposed at a distance longer than the height of the first straight conveyor roller and are disposed in a positional relationship in which the pillar body transporting portions of the second straight conveyor roller do not overlap, and

[0021] In this way, the roller conveyor in which the cylindrical conveying parts that come into contact with the transported object are arranged in a staggered pattern, which is a roller conveyor in the form of a conveyor belt with many small rollers spread over its surface, and since there is no widthwise gap between the rollers of the conventional roller conveyor, sheet-like transported objects can be transported without falling, and the restrictions on the transported objects can be reduced. In addition, the contact area between the cylindrical conveying parts and the transported object of this staggered roller conveyor is significantly reduced compared to the contact area between the rollers and the transported object of the conventional roller conveyor, and the normal force against the transported object increases, so that the friction force proportional to the contact area increases and the sliding of the transported object is suppressed. In addition, unlike the rollers of the conventional roller conveyor, the many cylindrical conveying parts come into contact with and press the transported object from various directions as protrusions, which has the effect of preventing the transported object from sliding and meandering, and improves the straight transportability.

[0022] However, with regard to vibration and noise, if a cylindrical conveying part is manufactured that is structurally and made of the same materials as conventional ones, the increase in normal force and the decrease in the contact area between the transported goods and the cylindrical conveying part will change the quality of the impact that the cylindrical conveying part gives to the transported goods and the accompanying impact noise, but the amount cannot be significantly reduced, so it is necessary to provide a vibration control mechanism and / or a noise reduction mechanism that includes a polymer viscoelastic material.

[0023] Furthermore, the roller conveyor with the columnar transport parts arranged in a staggered pattern can transport sheet-like transport objects that fall through the gaps extending in one direction between the rollers like the conventional roller conveyor, but in order to expand the constraints on transporting objects with small external dimensions, it is necessary to shorten the distance between adjacent columnar transport parts. It is more preferable to arrange the columnar transport parts in a staggered pattern so that the pitch is shorter than the pitch of the rollers in the conventional straight roller conveyor, i.e., a straight roller conveyor arranged at a predetermined pitch, in which a plurality of conveyor rollers have a common axis with the shaft, a circumferential thickness and an outer diameter of the columnar transport parts are equal, and the axial width length is approximately equal, with a cylindrical roller having a height corresponding to the shaft, while maintaining a gap equal to the gap between the outer surface of the columnar transport parts and the rotating shaft. For this purpose, it is preferable to make the pitch of adjacent pillar body conveying parts of the same rotation axis of the first and second straight conveyor rollers, which are basic units constituting the roller conveyor in which the pillar body conveying parts of the present invention are arranged in a staggered pattern, shorter than the pitch of the rollers of a conventional straight roller conveyor. This is because the pitch of the pillar body conveying parts of the adjacent first and second straight conveyor rollers, which have different rotation axes, is shorter than the pitch of adjacent pillar body conveying parts of the same rotation axis, and therefore, by making at least the maximum pitch of the pillar body conveying parts shorter than the pitch of the conventional straight roller conveyor, the constraints on the external shape of the conveyed objects can be reduced.

[0024] That is, the second aspect of the present invention is a straight roller conveyor in which, in the straight roller conveyor of the first invention, a plurality of conveyor rollers having a common axis with the shaft, the circumferential thickness and outer diameter of the cylindrical body conveying section being equal, the shaft is equipped with cylindrical rollers of a height corresponding to the shaft, and the lengths of the conveyor rollers in the axial direction are approximately equal, the gap being equal to the gap between the outer surface of the cylindrical body conveying section and the pivot axis of the cylindrical body conveying section, and the pitch of adjacent cylindrical body conveying sections of the same pivot axis of the first and second straight conveyor rollers is shorter than the pitch of the straight roller conveyor arranged at a predetermined pitch.

[0025] Thirdly, the present invention relates to a straight roller conveyor in which a third straight conveyor roller and a fourth straight conveyor roller, which have a common rotation axis and are substantially equal in width but different in shape, are arranged as basic units alternately at a substantially constant axial interval of the rotation axis so that both ends are aligned, the third straight conveyor roller and the fourth straight conveyor roller each having a rotation axis formed by cutting a spheroid, the long axis of which is symmetrical to the axis line shared with the third straight conveyor roller and the fourth straight conveyor roller, at a right angle to the axis line and at a position equidistant from both ends of the spheroid, and the axis line being the center line, the rotation axis having a height substantially constant with the outer diameter of the outer surface of the spheroid the third straight conveyor roller and the fourth straight conveyor roller are arranged such that the hollow drum-shaped pillar transporting section that does not include a cylinder head is disposed at an interval longer than the height of the hollow drum-shaped pillar transporting section and in a positional relationship such that the pillar transporting section of the third straight conveyor roller and the pillar transporting section of the fourth straight conveyor roller do not overlap, and the pillar transporting section is equipped with a vibration damping mechanism and / or a noise silencing mechanism including a polymer viscoelastic material, and the straight roller conveyor is configured such that the outer surface of the pillar transporting section of the third straight conveyor roller is opposed to the rotating shaft that forms the interval between the pillar transporting sections of the fourth straight conveyor roller without contacting each other.

[0026] By making the outer shape of the cylindrical transport part that comes into contact with the transported object into a drum shape, the cylindrical transport part does not come into contact with the transported object at an acute angle, which has the effect of preventing damage to the transported object and reducing vibration and noise during contact.

[0027] Fourthly, for exactly the same reason as in paragraph 0019, the present invention is a straight roller conveyor characterized in that, in the straight roller conveyor of the third invention described above, a plurality of conveyor rollers having a common axis with the shaft, the maximum circumferential thickness of the cylinder body conveying section is equal to the outer diameter of its outer surface, the shaft is equipped with cylindrical rollers of a height corresponding to the shaft, and the lengths of the conveyor rollers are approximately equal in width in the axial direction, the gap being equal to the gap between the outer surface of the cylinder body conveying section and the pivot axis of the cylinder body conveying section, and the pitch of adjacent cylinder body conveying sections on the same pivot axis is shorter than the pitch of the straight roller conveyor arranged at a predetermined pitch.

[0028] Fifthly, the present invention provides a curved roller conveyor in which a first curved conveyor roller and a second curved conveyor roller having a common rotating shaft and substantially equal widths but different shapes are arranged as basic units, and the first curved conveyor roller and the second curved conveyor roller are arranged alternately at intervals of a substantially constant central angle formed by adjacent axes with both ends substantially aligned and with the intersection of the extensions of the axes of the first curved conveyor roller and the second curved conveyor roller as the center of a circle, wherein the first curved conveyor roller and the second curved conveyor roller each include a rotating shaft having a substantially constant outer diameter and a substantially constant height with the axis shared with the first curved conveyor roller and the second conveyor roller as the center line. The first curved conveyor roller and the second curved conveyor roller are arranged in a positional relationship such that the pillar body conveying portion of the first curved conveyor roller and the pillar body conveying portion of the second curved conveyor roller do not overlap, with the pillar body conveying portion being spaced apart from the first curved conveyor roller by a distance longer than the height of the hollow cylindrical pillar body conveying portion, and the pillar body conveying portion is equipped with a vibration damping mechanism and / or a noise reduction mechanism including a polymer viscoelastic material, and the curved roller conveyor is configured such that the outer surface of the pillar body conveying portion of the first curved conveyor roller is opposed to the rotating shaft that forms the space between the pillar body conveying portions of the second curved conveyor roller without coming into contact with each other.

[0029] Sixthly, for exactly the same reason as in paragraph 0019, the present invention is a curved roller conveyor characterized in that, in the above-mentioned fifth curved roller conveyor, a plurality of conveyor rollers each having a common axis with the shaft, the circumferential thickness of the above-mentioned cylindrical body conveying part being equal to its outer diameter, the shaft being equipped with cylindrical rollers of a height corresponding to the shaft, the width in the axial direction being approximately equal, the equal gaps being maintained at positions corresponding to the gaps between the outer surface of the cylindrical body conveying part and the pivot axis of the cylindrical body conveying part, and the pitch of adjacent cylindrical body conveying parts of the same pivot axis is shorter than the pitch of a curved roller conveyor arranged at a predetermined central angle formed by the axis lines of adjacent conveyor rollers and the convergence point, with one convergence point of extensions of the axes as the center of a circle.

[0030] Seventhly, the present invention relates to a curved roller conveyor in which a third curved conveyor roller and a fourth curved conveyor roller having a common rotation axis and substantially the same width but different shapes are arranged as basic units, and the third curved conveyor roller and the fourth curved conveyor roller are arranged alternately with both ends substantially aligned and with the central angles formed by adjacent axes at substantially constant intervals, with the intersection of the extension lines of the axes of the third curved conveyor roller and the fourth curved conveyor roller as the center of a circle, the third curved conveyor roller and the fourth curved conveyor roller each being arranged by cutting a spheroid having a major axis of symmetry on the axis shared with the third curved conveyor roller and the fourth curved conveyor roller at a right angle to the axis and at a position equidistant from both ends of the spheroid, and rotating the spheroid with the axis as the center line. The third curved conveyor roller and the fourth curved conveyor roller have hollow drum-shaped cylinder body conveying sections, which do not include a rotating axis and have a height that is approximately constant with the outer diameter of the outer surface of the spheroid, arranged at intervals longer than the height of the hollow drum-shaped cylinder body conveying sections, and in a positional relationship such that the cylinder body conveying sections of the third curved conveyor roller and the fourth curved conveyor roller do not overlap, and the cylinder body conveying sections are equipped with a vibration damping mechanism and / or a noise reduction mechanism including a polymer viscoelastic material, and the curved roller conveyor is characterized in that the outer surface of the cylinder body conveying section of the third curved conveyor roller is configured to face the rotating axis that forms the gap between the cylinder body conveying sections of the fourth curved conveyor roller without contacting each other.

[0031] Eighth, for exactly the same reason as in paragraph 0019, the present invention is a curved roller conveyor characterized in that, in the above-mentioned seventh curved roller conveyor, a plurality of conveyor rollers having a common axis with the shaft, a cylindrical roller on the shaft having a height corresponding to the shaft and a width in the axial direction that is approximately equal, the conveyor rollers maintain equal gaps at positions corresponding to the gaps between the outer surface of the cylinder body conveying part and the pivot axis of the cylinder body conveying part, and the pitch of adjacent cylinder body conveying parts on the same pivot axis is shorter than the pitch of a curved roller conveyor arranged at a predetermined central angle formed by the axis lines of adjacent conveyor rollers and the convergence point, with one convergence point of extensions of the axes as the center of a circle.

[0032] Ninthly, the present invention provides a curved roller conveyor in which a fifth curved conveyor roller and a sixth curved conveyor roller having a common rotation axis and substantially the same width but different shapes are arranged as basic units, and the fifth curved conveyor roller and the sixth curved conveyor roller are arranged alternately with the intersection of the extensions of the axes of the fifth curved conveyor roller and the sixth curved conveyor roller as the center of a circle, the both ends of which are substantially aligned, and the central angles formed by the adjacent axes are substantially constant intervals, the fifth curved conveyor roller and the sixth curved conveyor roller are respectively truncated cones having a predetermined apex angle with the axes of the fifth curved conveyor roller and the sixth curved conveyor roller as their axes of symmetry, cut at a constant interval to a constant height shorter than this constant interval, and the axis is the center line of the fifth curved conveyor roller and the sixth curved conveyor roller being a truncated cone. The fifth curved conveyor roller and the sixth curved conveyor roller are characterized in that a hollow truncated cone-shaped cylinder body conveying section, which does not include a rotating axis and has an outer diameter of the outer surface of the truncated cone and a substantially constant height, is arranged at the above-mentioned constant interval longer than the hollow truncated cone-shaped cylinder body conveying section, and the cylinder body conveying section of the fifth curved conveyor roller and the cylinder body conveying section of the sixth curved conveyor roller do not overlap, and the cylinder body conveying section is equipped with a vibration damping mechanism and / or a noise silencing mechanism including a polymer viscoelastic material, and the curved roller conveyor is characterized in that the outer surface of the cylinder body conveying section of the fifth curved conveyor roller is configured to face the rotating axis that forms the interval between the cylinder body conveying sections of the sixth curved conveyor roller without contacting each other.

[0033] The tenth aspect of the present invention, for exactly the same reason as in paragraph 0019, is a curved roller conveyor according to the ninth aspect, characterized in that the pitch of adjacent cylindrical body conveying parts on the same pivot axis is shorter than the pitch of a curved roller conveyor arranged at a predetermined central angle formed by the axis lines of adjacent conveyor rollers and the convergence point of one convergence point of extensions of the axes of the axes of the adjacent conveyor rollers, the pitch of adjacent cylindrical body conveying parts on the same pivot axis being shorter than the pitch of a curved roller conveyor arranged at a predetermined central angle formed by the axis lines of adjacent conveyor rollers and the convergence point ...

[0034] The present invention relates to a curved roller conveyor having a fifth curved conveyor roller and a sixth curved conveyor roller, which are provided with a common rotation axis and have a width length that is approximately equal but different in shape, and which are arranged alternately with both ends approximately aligned and with a central angle formed by adjacent axes at approximately constant intervals, with the intersection of the extension lines of the axes of the fifth curved conveyor roller and the sixth curved conveyor roller as the center of a circle, the fifth curved conveyor roller and the sixth curved conveyor roller each being a truncated cone formed by cutting a cone having a predetermined apex angle with the axes of the fifth curved conveyor roller and the sixth curved conveyor roller as its axis of symmetry at a constant interval and at a constant height that is shorter than the constant interval, the fifth curved conveyor roller and the sixth curved conveyor roller each being a truncated cone having a predetermined apex angle with the axes of the fifth curved conveyor roller and the sixth curved conveyor roller as its axis of symmetry at a constant interval, the fifth curved conveyor roller and the sixth curved conveyor roller each being a truncated cone having a predetermined apex angle with the axes of the fifth curved conveyor roller and the sixth curved conveyor roller as its axis of symmetry at a constant interval and at a constant height that is shorter than the ... The fifth curved conveyor roller and the sixth curved conveyor roller have hollow truncated cone-shaped cylinder body conveying sections not including a driving shaft, the hollow truncated cone-shaped cylinder body conveying sections being disposed at the above-mentioned constant interval longer than the height of the hollow truncated cone-shaped cylinder body conveying sections, and in a positional relationship in which the cylinder body conveying sections of the fifth curved conveyor roller and the sixth curved conveyor roller do not overlap, and the cylinder body conveying sections are equipped with a vibration damping mechanism and / or a noise reduction mechanism including a polymer viscoelastic material, and the inclination angle formed by the axis of the fifth curved conveyor roller and the sixth curved conveyor roller and the horizontal plane is approximately 1 / 2 of the apex angle, and the rotating shaft forming the interval between the cylinder body conveying sections of the sixth curved conveyor roller is configured to face the outer surface of the cylinder body conveying section of the fifth curved conveyor roller without contacting each other.

[0035] The present invention, in a twelfth aspect, for exactly the same reason as in paragraph 0019, is a curved roller conveyor according to the eleventh aspect, characterized in that a plurality of conveyor rollers, each having a common axis with the shaft and a truncated cone-shaped roller on the shaft with an apex angle equal to a predetermined apex angle with the axis lines of the fifth curved conveyor roller and the sixth curved conveyor roller as an axis of symmetry, and a width in the axial direction that is approximately equal to the length of the shaft, are arranged at equal gaps at positions corresponding to the gaps between the outer surfaces of the cylindrical body conveying parts and the pivot axes of the cylindrical body conveying parts, and are arranged at a predetermined central angle formed by the axis lines of adjacent conveyor rollers and the convergence point with one convergence point of extensions of the axes as the center of a circle, and the inclination angle of the conveyor rollers formed by the axis lines and the horizontal plane is about 1 / 2 of the apex angle formed by two generatrix of the truncated cone-shaped rollers, and the pitch of adjacent cylindrical body conveying parts on the same pivot axis is shorter than the pitch of a curved roller conveyor.

[0036] Now, the straight conveyor roller and the curved conveyor roller, which are one of the basic units of all the straight roller conveyors and the curved roller conveyors of the present invention described above, may have various configurations of conveyor rollers, and are not particularly limited. For example, the rotating shaft may be the shaft of the conveyor roller, and a member molded into the shape of various columnar body conveying parts equipped with a vibration damping mechanism and / or a sound-reducing mechanism may be joined to the shaft with a fixing member. In this case, it is also possible to mold the columnar body conveying part into a covering member such as a sleeve, press it in, and fit and fix it. Also, it is possible to insert a member molded with a shaft insertion hole into the shaft in the shape of various columnar body conveying parts equipped with a vibration damping mechanism and / or a sound-reducing mechanism. In this case, it is possible to fix the member by screwing, meshing, and hooking without using a fixing member, or by joining with a bolt, nut, adhesive, etc.

[0037] In particular, it is preferable from the viewpoint of productivity to integrally mold the rotating shaft and the columnar transport part equipped with the vibration-damping mechanism and / or the noise-reducing mechanism. In particular, when the resin conveyor roller is made of resin including a part or all of the vibration-damping mechanism and / or the noise-reducing mechanism, the integrally molded structure can utilize injection molding using a mold or cutting molding using a machining center, and can provide a lightweight conveyor roller, which can contribute to energy saving.

[0038] However, it is difficult for integrally molded conveyor rollers to flexibly respond to changes in the specifications of the conveyor roller, and it is particularly preferable for conveyor rollers with various configurations, such as those of the present invention, in which the shape of the columnar transport part and the vibration-damping mechanism and / or noise-reduction mechanism are changed, to be adapter-type conveyor rollers that are made up of a roller adapter that inserts the columnar transport part into the shaft of the roller and attaches it, making it a conveyor roller with a removable columnar transport part. In this case, the shaft of a conventional roller conveyor can be used as is, which is also economical. Although such adapter-type conveyor rollers can be applied to all of the conveyor rollers of the present invention, a representative example will be described here.

[0039] For example, in the first invention, the first and second straight conveyor rollers are straight conveyor rollers with a cylindrical body transport part assembled on a rotating shaft, and are preferably straight conveyor rollers assembled using a shaft having a length and an outer shape equal to the rotating shaft, a hollow cylindrical body having the same axis as the cylindrical body transport part, which is integrally molded with the cylindrical body transport part and can be fitted to the shaft outer circumferential surface, a joint part which engages with the cylindrical body transport part so as to secure a distance longer than the height of the cylindrical body transport part, and a fixing member for fastening the shaft, the cylindrical body transport part, and the joint part so as to be rotatable synchronously, and the rotating shaft is composed of the shaft and the joint part. Here, the shaft having an outer shape equal to the rotating shaft means, as described above, a shaft having a length that is approximately the same as the rotating shaft, but an outer diameter that becomes the outer diameter of the rotating shaft when the joint part is attached to the shaft. This point is the same in the following description of the adapter type conveyor roller.

[0040] In addition, in a fifth invention, the first and second curved conveyor rollers are curved conveyor rollers having a cylindrical body transporting part incorporated into a rotating shaft, and are assembled using a shaft having a length approximately equal to the rotating shaft and an outer shape equal to the rotating shaft, a hollow cylindrical body having the same axis as the cylindrical body transporting part and capable of fitting to the outer peripheral surface of the shaft, which is integrally molded with the cylindrical body transporting part, a joint part which engages with each other so as to ensure a gap longer than the height of the cylindrical body transporting part, and a fixing member for fastening the shaft, the cylindrical body transporting part, and the joint part so that they can rotate synchronously, and it is preferable that the rotating shaft is a curved conveyor roller composed of the shaft and the joint part.

[0041] In an eleventh invention, the fifth and sixth curved conveyor rollers are curved conveyor rollers having a cylindrical body transporting part incorporated into a rotating shaft, and are assembled using a shaft having a length approximately equal to the rotating shaft and an outer shape equal to the rotating shaft, a hollow cylindrical body having the same axis as the cylindrical body transporting part and capable of fitting to the outer peripheral surface of the shaft, which is integrally molded with the cylindrical body transporting part, a joint part which engages with each other so as to ensure a gap longer than the height of the cylindrical body transporting part, and a fixing member for fastening the shaft, the cylindrical body transporting part, and the joint part so that they can rotate synchronously, and the curved conveyor rollers are preferably constructed of a rotating shaft composed of the shaft and the joint part.

[0042] In all of the roller conveyors of the present invention, the rotating shaft is not particularly limited as long as it is a rotatable cylindrical body on which all of the cylindrical transport sections are arranged, but it is preferable that the rotating shaft be a cylindrical body in consideration of the configuration with other components such as pulleys and bearings when assembling the conveyor rollers into the roller conveyor.

[0043] By the way, the roller conveyor of the present invention functions by appropriately arranging a pair of conveyor rollers arranged at a predetermined interval in the width direction and a columnar conveying part of a predetermined height, but since the shape of the conveyed object and the specifications of the roller conveyor differ depending on the purpose of using the roller conveyor, gaps that are difficult to avoid and do not need to be considered in the roller conveyor using conventional cylindrical conveyor rollers may occur in the roller conveyor of the present invention. Therefore, all roller conveyors of the present invention are characterized by being equipped with a width adjustment mechanism.

[0044] This width adjustment mechanism is preferably incorporated at the beginning of the design when the rotating shaft of the conveyor roller and the columnar transport part are integrally molded. However, when the stand and frame of the roller conveyor are fixed to modify an existing roller conveyor into the roller conveyor of the present invention, or when the specifications of the conveyor roller of the present invention are changed according to the intended use, or in the case of the adapter-type conveyor roller of the present invention, it is preferable that the width adjustment mechanism is removable. In this case, as described in paragraphs 0035 to 0037, it is preferable to use a hollow cylindrical roller adapter equipped with a columnar transport part, a joint part, and a fixing part, and to use a width adjustment adapter that shortens the length in the width direction of the conveyor. Also, a sleeve, which is a hollow cylindrical covering member that fills the width, can be used.

[0045] On the other hand, technologies for reducing vibration and noise have already been widely studied in the fields of civil engineering and construction, vehicles and aircraft, and audio equipment, but vibration and noise are closely related, and it is difficult to take measures that clearly separate the two. The same is true for vibration and noise in this technical field, but there is a special characteristic in that vibration and noise are generated by contact between the rotating conveyor roller and the transported object moving on the conveyor roller. Therefore, the vibration control mechanism and / or noise reduction mechanism corresponding to the roller conveyor of the present invention proposes a technology that has been experimentally confirmed to have the effect of reducing both materials and / or structures by referring to the vibration and noise reduction technologies obtained so far (for example, Non-Patent Documents 1 to 8).

[0046] Generally, technology for reducing vibration and noise is required to deal with solid-borne sound caused by vibration of objects and airborne sound caused by vibration of air. In order to eradicate vibration and noise in roller conveyors, it is necessary to provide vibration control and vibration isolation for solid-borne sound that travels through the structure including the roller conveyor device and its installation surface, and sound insulation and sound absorption for airborne sound whose source is the structure including the roller conveyor device and its installation surface, which is a large-scale and comprehensive vibration and noise reduction measure. However, the vibration control mechanism and / or sound silencing mechanism of the present invention are intended to suppress the generation of sound sources that occur at the contact between the conveyor rollers and the transported objects, as compared to belt conveyors, which are part of such vibration and noise reduction measures, and to reduce the propagation of solid-borne sound and airborne sound.

[0047] The reason why vibrations and noise caused by contact with the transported goods on a roller conveyor are greater than those on a belt conveyor can be attributed to the difference in materials and structure.

[0048] In terms of materials, the conveyor rollers that come into contact with the transported goods of the roller conveyor are made of various chrome-treated steel, stainless steel, or aluminum alloy, and are elastic bodies with a large elastic modulus, with sufficiently small deformation, and break suddenly when the elastic limit is exceeded, while the belts that come into contact with the transported goods of the belt conveyor are made of resin and are viscoelastic bodies whose characteristics can be expressed by a model in which elastic components and viscous components are in parallel, which is a crucial difference.Since the conveyor rollers are elastic bodies, they tend to become sound sources due to contact with the transported goods, and the noise tends to propagate through the conveyor rollers as fixed propagation sound, and also tends to propagate through the air by reflecting air-borne sound.

[0049] Structurally, the conveyor rollers arranged in a roller conveyor are tall and hollow cylindrical, a shape that is easy to transmit and resonate with airborne sound, and many of them are adjacent to each other and exposed to the air, whereas the pulleys (rollers) arranged in various places in a belt conveyor are few in number and covered by the belt at intervals. This is thought to be the reason why roller conveyors are easier to transmit stationary borne sound and airborne sound.

[0050] Therefore, first, we investigated materials that are unlikely to become a sound source due to contact with the transported object and are effective in vibration control and vibration isolation of stationary propagation sound of the sound source. As a result of the investigation, it was found that, as in the belt conveyor, generally, a viscoelastic body having an elastic component and a viscous component, especially a viscous component of a polymer viscoelastic body, has a function of mitigating the generation of impact and impulse sound generated by collision between objects and suppressing the solid propagation and air propagation of the impact and impulse sound (Non-Patent Documents 2-5). Due to the peculiarity of vibration and noise generated by the contact between the transported object moving on the conveyor roller and the conveyor roller, various polymer viscoelastic bodies were actually adopted as the vibration control mechanism and / or sound silencing mechanism of the conveyor roller of the roller conveyor of the present invention, and it was found that the vibration and noise of the conveyor roller could be reduced. It is preferable that the entire columnar transport part of the roller conveyor of the present invention is made of a viscoelastic body, but it was also found that if the viscoelastic body is present in about 50% or more inside the columnar transport part, the vibration and noise reduction effect is exhibited. In this way, when the entire column transport part is made of polymer viscoelasticity, general-purpose resin molding techniques such as injection molding, extrusion molding, cutting, etc. can be used. Also, when a part of the column transport part is made of polymer viscoelasticity, general-purpose resin molding techniques such as injection molding, extrusion molding, cutting, etc. of a mixture of a polymer viscoelasticity and a different material, a method of attaching and joining a loading part of a column transport part provided with a loading part of a different material molded with a polymer viscoelasticity, or the reverse method can be used.

[0051] In particular, the polymer viscoelastic body is preferably an uncrosslinked polymer, because crosslinked polymers also contain viscous components, but the crosslinking points are thought to constrain the movement of molecular chains in such a way that the function of the viscous components is impaired.

[0052] In addition, the polymer viscoelastic material used in the roller covering material for preventing slippage of the belt of the belt conveyor or the roller conveyor, i.e., for controlling the conveying direction and eliminating the impact of the conveyed material fed into the roller conveyor with the conveying roller and the noise caused by the impact, is a crosslinked rubber such as urethane rubber, nitrile rubber, butyl rubber, chloroprene rubber, natural rubber, and silicone rubber, and certainly functions as a vibration-damping mechanism and / or a noise-reducing mechanism of the roller conveyor of the present invention in terms of reducing vibration and noise. However, since the friction coefficient is extremely high, it is not suitable for the vibration-damping mechanism and / or the noise-reducing mechanism of the conveyor roller of the present invention. Although it certainly has the effect of reducing vibration and noise, one of the features of the roller conveyor that is not found in the belt conveyor is that it can fully exert the accumulating function by using a metal with a low friction coefficient, so it is required to be a polymer viscoelastic material with a low friction coefficient. In addition, the above-mentioned crosslinked rubber can increase the friction coefficient by increasing the crosslinking density, but the function of the viscous component that reduces vibration and noise is impaired. However, the above-mentioned rubber-based viscoelastic body can be applied as a vibration-damping mechanism and / or a noise-reducing mechanism constituting a part of the columnar body transport section in a form coated with a different material having a low friction coefficient.

[0053] Then, the coefficient of friction required for the columnar conveying part that comes into contact with the conveyed object is preferably in the following range, using the coefficient of static friction as an index. The coefficient of static friction of the above-mentioned various rubbers is at least 1 or more, while the coefficient of static friction of metal is about 0.2 to 0.8, which impairs the inherent characteristics of the roller conveyor. Therefore, a polymer that is a viscoelastic body with a small coefficient of static friction is preferable, but a polymer viscoelastic body with a small coefficient of static friction greatly reduces the molecular mobility of the viscous component, impairing the vibration and noise reduction effect. Therefore, the static friction coefficient μs of the polymer viscoelastic body that constitutes the vibration damping mechanism and / or the sound silencing mechanism of the present invention is preferably an uncrosslinked polymer with a static friction coefficient of 0.15≦μs≦0.40. Here, the static friction coefficient is a measured value according to the friction coefficient test method for plastic films and plastic sheets of JIS K7125.

[0054] Thus, it is particularly preferable that the uncrosslinked polymer, which has a friction coefficient equivalent to that of metal but does not have extremely high elasticity like metal, which is an elastic body, and exhibits vibration and noise reduction effects due to viscous components, further has a main dispersion and / or a sub-dispersion at 25°C or less in dynamic viscoelasticity measurement. In general, the main dispersion and the sub-dispersion in dynamic viscoelasticity are closely related to the vibration and noise reduction effect of the polymer viscoelastic body, and are particularly closely related to the noise reduction effect, and it has been found that such a polymer viscoelastic body exhibits a vibration and noise reduction effect (for example, Non-Patent Documents 2, 4, and 5). However, since there is a special characteristic of vibration and noise generated by the contact between the conveyor roller and the conveyor roller, a polymer viscoelastic body having such characteristics was used as the vibration damping mechanism and / or sound silencing mechanism of the present invention and an experiment was performed, and it was confirmed that a polymer viscoelastic body having either a main dispersion or a sub-dispersion at a temperature below room temperature exhibits excellent vibration damping and sound silencing effects. The primary dispersion is based on the micro-Brownian motion of the polymer molecular chains, and the temperature at which this motion starts is called the glass transition temperature (Tg). The secondary dispersion is based on the thermal motion of the polymer side chains and the local twisting motion of the polymer main chain, and the temperature at which each motion starts. This type of dispersion can be determined from the loss tangent (tan δ=E” / E'), which is the ratio of the storage modulus (E'), which relates to the elasticity of the polymer, to the loss modulus (E”), which relates to the viscosity of the polymer, in dynamic viscoelasticity measurements.

[0055] From this viewpoint, the polymer viscoelastic body suitable for the columnar transport part of the roller conveyor of the present invention that comes into contact with the transported object is preferably at least one selected from polyethylene (PE), polypropylene (PP), polyoxymethylene (POM), polyvinyl chloride (PVC), polyamide (PA), polycarbonate (PC), and polyarylate (PAR) (Non-Patent Documents 6-8). In particular, there are various PEs with different densities, and there are various PPs with different copolymers and stereoregularities, all of which satisfy the conditions for use, but high-density PE (HDPE) and PP homopolymers, which have excellent mechanical properties, are more preferable. Both are thermoplastic uncrosslinked polymers and have materials suitable for vibration-damping mechanisms and / or sound-silencing mechanisms that exhibit excellent vibration and noise reduction effects.

[0056] Further, as a result of detailed investigation, it was found that the micro molecular mobility at room temperature or below is an important factor for the polymer viscoelastic material suitable for the sleeve roller of the present invention from the viewpoint of vibration and noise reduction effect, but the factors of mechanical strength and thermal properties, especially sliding property, cannot be ignored. Therefore, as an uncrosslinked polymer viscoelastic material that does not contain a primary dispersion at 25°C or below and is not certain whether a secondary dispersion exists, but also has sliding property, it is also preferable to select one or more from poly(acrylonitrile-butadiene-styrene) (ABS), polyphenylene ether (PPE), polyphenylene sulfide (PPS), polysulfone (PSU), polyethersulfone (PESU), polyetheretherketone (PEEK), polyetherimide (PEI), and polyamideimide (PAI). In particular, it is preferable that PPE is a polymer viscoelastic material blended with POA and / or PPS from the viewpoint of processability. Although the existence of sub-dispersions is unclear, these polymers are clearly viscoelastic bodies, and compared to metals, which are elastic bodies with almost no viscous components, they have a much larger viscous component and a larger amount of deformation after exceeding their elastic limit. Therefore, compared to metals, which break instantly when their elastic limit is exceeded, they exhibit excellent vibration and noise reduction effects.

[0057] On the other hand, in terms of structure, the conveyor roller of the roller conveyor of the present invention is not a long hollow cylinder like the conventional conveyor rollers, but a small columnar body, so that solid-borne sound and airborne sound are prevented, and the shape of the columnar conveying part itself is included in the vibration-damping mechanism and / or the noise-reducing mechanism. And, a synergistic effect is generated between this structural factor and the material factor that the columnar conveying part is equipped with a vibration-damping mechanism and / or a noise-reducing mechanism including a polymer viscoelastic body having vibration and noise reducing functions.

[0058] Furthermore, it is generally recognized that narrow spaces have an excellent effect of absorbing airborne sound, and sound-absorbing materials with the following structure are used (for example, Non-Patent Document 1). They are roughly divided into porous types suitable for mid-high ranges, membrane or plate types suitable for mid-low ranges, and hollow types suitable for low ranges (porous materials: for mid-high ranges). However, since the effect requires selection of the structure and material optimal for the sound source, the only way to find a structure suitable for the present invention is to demonstrate the effect on the special vibrations and noise generated by contact between the conveyor rollers and the transported goods moving on the conveyor rollers, as already explained.

[0059] The vibration-damping mechanism and / or noise-reducing mechanism of the roller conveyor of the present invention also have a synergistic effect with the polymer viscoelastic material, and it has been confirmed that vibration and noise can be reduced simply by forming a minute space in the cylindrical transport section. Furthermore, in order to find the optimal space, we examined the structure with reference to the three types of sound-absorbing material mentioned above, and experimentally found that forming the following structure in the cylindrical transport section produces an excellent synergistic effect with the polymer viscoelastic material against vibration and noise generated by contact between the conveyor roller and the transported object moving on the conveyor roller.

[0060] First, a cavity is formed in the columnar transport section as a space, which is recessed from both ends of the columnar transport section in the axial direction without penetrating the columnar transport section. In particular, it is preferable that this cavity is a cylindrical cavity with an inner diameter equal to the radius of the rotation axis of the conveyor roller of the present invention and an outer diameter shorter than the outer diameter of the columnar transport section. From the viewpoint of strength, the volume of this cavity is preferably about 75% or less of the columnar transport section, but there is no particular restriction from the viewpoint of vibration and noise reduction effect. Furthermore, it is more preferable that this cylindrical cavity is divided by a plurality of partition walls from the axis of the rotation axis toward the outer surface of the columnar transport section. From the viewpoint of strength, the number of partition walls is preferably four or more, and from the viewpoint of productivity, the number is preferably eight or less, but there is no particular restriction from the viewpoint of vibration and noise reduction effect.

[0061] Secondly, the space in the column transport section is preferably a slit drilled from both ends in the axial direction of the column transport section. From the viewpoint of strength, the slit is preferably about 75% or less of the volume of the column transport section, but from the viewpoint of vibration and noise reduction effect, there is no particular restriction on the shape, number, etc. of the slit.

[0062] Thirdly, it is preferable that the cylindrical transport part has sponge-like bubbles as spaces, and either closed or open bubbles may be used. From the viewpoint of strength, it is preferable that the bubbles are about 75% or less of the volume of the cylindrical transport part, but from the viewpoint of vibration and noise reduction effect, there is no particular restriction on the shape, number, etc. of the bubbles. Effect of the Invention

[0063] The present invention overcomes the following problems: the freedom of shape of the transported object is limited to objects that can be received by four or more conveyor rollers, and the transport is by linear contact with metal rollers that have low friction and high hardness, which limits the objects to be transported with a large bottom surface; stability of the transport direction due to the sliding of the transported object; safety of the transported object due to collisions or falling of the transported object with the conveyor caused by sliding; and safety and quietness of the transported object due to collisions of the transported object with the metal rollers.

[0064] As a result, the present invention can provide a straight roller conveyor and a curved roller conveyor that are excellent in terms of the variety of objects to be conveyed, the stability and safety of conveying, the controllability of the conveying direction, and the quietness of the conveyor, which reduces the noise caused by collisions between objects and the conveyor, and that have few restrictions on the objects to be conveyed. Moreover, the straight roller conveyor and the curved roller conveyor that have solved the problems of the present invention, like the conventional roller conveyor, do not impair the inherent advantages of roller conveyors, such as the accumulating function that is indispensable in logistics centers and the like that require complex conveying routes such as sorting and consolidation processes, and the ability to freely control the conveying direction of objects by using the roller gap, and are therefore expected to expand the applications of roller conveyors, further increase logistics efficiency, and make a great contribution to the innovation of logistics systems. [Brief description of the drawings]

[0065] [Figure 1] In order to clarify the difference from the roller conveyor of the present invention, the following perspective schematic diagrams are provided of a gravity conveyor or roller conveyor, without illustrating a drive mechanism, a stand mechanism, etc., which explain a conventional roller conveyor. (a) is a straight roller conveyor, and (b) is a curved roller conveyor that uses tapered rollers. [Diagram 2]This shows a schematic cross-sectional view of a vibration-damping and noise-reducing staggered straight roller conveyor according to one embodiment of the present invention, in which a pair of straight conveyor rollers (1) and (2) of different shapes are arranged alternately at a certain pitch as basic units, taken along a horizontal plane passing through the axis. The straight conveyor roller (1) and the straight conveyor roller (2) are each provided with a hollow cylindrical conveying section, not including a pivot shaft, having a constant outer diameter and height with the axis of the pivot shaft as the center line, at a distance longer than the height of the cylindrical conveying section and in a positional relationship such that the cylindrical conveying section of the straight conveyor roller (1) and the cylindrical conveying section of the second straight conveyor roller (2) do not overlap, and the straight conveyor roller (1) and the straight conveyor roller (2) are provided with a vibration damping mechanism and a noise reduction mechanism (not shown), and the straight conveyor roller (1) and the straight conveyor roller (2) are configured such that the pivot shaft, which forms the space between the cylindrical conveying sections of the straight conveyor roller (2), faces the outer surface of the cylindrical conveying section of the straight conveyor roller (1) without coming into contact with each other. [Diagram 3]FIG. 1 shows a vibration-damping, noise-reducing staggered curved roller conveyor according to one embodiment of the present invention, in which a pair of tapered curved conveyor rollers (1) and (2) of different shapes are used as basic units, with the intersection of the extensions of the axes of the curved conveyor rollers as the center of a circle and arranged alternately at a certain pitch. FIG. 1 shows a schematic cross-sectional view (a) taken along a horizontal plane passing through the axis of the curved conveyor rollers, and a schematic cross-sectional view (b) taken along a vertical plane passing through cutting line V. The curved conveyor roller (1) and the curved conveyor roller (2) each have a common apex angle and generatrix on their rotation axes with the axis of the rotation axis as an axis of symmetry, and have hollow truncated cone-shaped conveying sections that have different outer diameters and a constant height and do not include a rotation axis, which are arranged in ascending order of outer diameter from the center of a circle at intervals longer than the height, and are arranged in a positional relationship such that the truncated cone-shaped conveying section of the curved conveyor roller (1) and the truncated cone-shaped conveying section of the curved conveyor roller (2) do not overlap, and the truncated cone-shaped conveying sections are equipped with a vibration-damping mechanism and a noise-reduction mechanism (not shown). The curved conveyor roller (1) and the curved conveyor roller (2) are inclined so that the generatrix of the curved conveyor roller is in a horizontal plane, and the rotation axis that forms the interval between the truncated cone-shaped conveying sections of the curved conveyor roller (2) is opposed to the outer surface of the truncated cone-shaped conveying section of the curved conveyor roller (1) without contacting each other. [Figure 4] 3 is a schematic cross-sectional view cut along a horizontal plane passing through the axis of a straight conveyor roller, showing an overview of a pair of vibration-damping and noise-reducing adapter-type straight conveyor rollers constituting a vibration-damping and noise-reducing staggered adapter-type straight roller conveyor, which is one configuration example of the vibration-damping and noise-reducing staggered straight roller conveyor shown in Fig. 2 according to one embodiment of the present invention. (a) is a schematic cross-sectional view of a main part in which a vibration-damping and noise-reducing straight roller adapter (cylindrical conveying part) is attached to a shaft, and (b) is a schematic cross-sectional view of the entire pair of vibration-damping and noise-reducing adapter-type straight conveyor rollers. [Diagram 5]FIG. 5 is a schematic cross-sectional view of a vibration-damping and noise-damping staggered adapter-type straight roller conveyor in which the vibration-damping and noise-damping staggered adapter-type straight conveyor rollers shown in FIG. 4 are appropriately arranged according to one embodiment of the present invention, taken along a horizontal plane passing through the axes of these straight conveyor rollers. [Figure 6] The structure of a vibration-damping and noise-reducing straight roller adapter (cylindrical conveying part) equipped with a vibration-damping mechanism and a noise-reducing mechanism constituting the vibration-damping and noise-reducing staggered adapter type straight conveyor roller shown in Fig. 4 according to one embodiment of the present invention is shown in Fig. 4. (a) is a schematic cross-sectional view taken along the axis of the straight roller adapter and the roller adapter fixing member, (b) is a schematic side view viewed from the right side of (a), and (c) is a schematic plan view viewed from above of (a). [Figure 7] 3 is a schematic cross-sectional view cut along a horizontal plane passing through the axis of a straight conveyor roller, showing an outline of a pair of vibration-damping and noise-reducing integrally molded straight conveyor rollers constituting a vibration-damping and noise-reducing staggered integrally molded straight roller conveyor, which is one configuration example of the vibration-damping and noise-reducing staggered straight roller conveyor shown in Fig. 2 according to one embodiment of the present invention. (a) is a schematic cross-sectional view of a main part in which a vibration-damping and noise-reducing straight roller molded body (cylindrical conveying part) is molded together with a rotating shaft, and (b) is a schematic cross-sectional view of the entire pair of vibration-damping and noise-reducing integrally molded straight conveyor rollers. [Figure 8] 4 is a schematic cross-sectional view cut along a horizontal plane passing through the axis of a curved conveyor roller, showing an overview of a pair of vibration-damping and noise-reduction adapter-type curved conveyor rollers constituting a vibration-damping and noise-reduction staggered adapter-type curved roller conveyor, which is one configuration example of the vibration-damping and noise-reduction staggered adapter-type curved roller conveyor shown in Fig. 3 according to one embodiment of the present invention. (a) and (b) show vibration-damping and noise-reduction adapter-type curved conveyor rollers in which the arrangement of the vibration-damping and noise-reduction curved roller adapters (frustum-shaped conveying parts) constituting the pair of vibration-damping and noise-reduction adapter-type curved conveyor rollers is different. [Figure 9]The vibration-damping and noise-damping staggered adapter-type curved roller conveyor according to one embodiment of the present invention is shown in Fig. 8, in which the rollers are inclined so that the conveying surface is horizontal and appropriately arranged. (a) is a schematic cross-sectional view cut along a horizontal plane passing through the axis of this curved roller conveyor, and (b) is a schematic cross-sectional view cut along a vertical plane passing through the cutting line V in (a). [Figure 10] The structure of a vibration-damping and noise-reducing curved roller adapter (frustum-shaped conveying part) equipped with a vibration-damping mechanism and a noise-reducing mechanism constituting the vibration-damping and noise-reducing staggered adapter type curved conveyor roller shown in Fig. 8 according to one embodiment of the present invention is shown. (a) is a schematic cross-sectional view taken along the axis of the curved roller adapter and the roller adapter fixing member, (b) is a schematic side view viewed from the left side of (a), and (c) is a schematic plan view viewed from above of (a). [Figure 11] As a modified example of the shape of the vibration-damping and noise-damping straight roller adapter (cylindrical conveying part) suitable for the vibration-damping and noise-damping staggered adapter type straight roller conveyor shown in Fig. 4 according to one embodiment of the present invention, a vibration-damping and noise-damping straight roller adapter of a drum-shaped conveying part is shown. (a) is a schematic cross-sectional view taken along the axis of this straight roller adapter and this roller adapter fixing member, (b) is a schematic side view viewed from the right side of (a), and (c) is a schematic plan view viewed from above of (a). [Figure 12] As a modified example of the vibration-damping mechanism and noise-reducing mechanism of the vibration-damping and noise-reducing straight roller adapter (cylindrical conveying part) suitable for the vibration-damping and noise-reducing staggered adapter type straight roller conveyor shown in Fig. 4 according to one embodiment of the present invention, a vibration-damping and noise-reducing straight roller adapter of a hollow vibration-damping and noise-reducing part is shown. (a) is a schematic cross-sectional view taken along the axis of this straight roller adapter and this roller adapter fixing member, (b) is a schematic side view viewed from the right side of (a), and (c) is a schematic plan view viewed from above of (a). [Figure 13]As a modified example of the vibration-damping and noise-silencing mechanism of the vibration-damping and noise-silencing straight roller adapter (cylindrical conveying part) suitable for the vibration-damping and noise-silencing staggered adapter type straight roller conveyor shown in Fig. 4 according to one embodiment of the present invention, a vibration-damping and noise-silencing straight roller adapter of a sponge-like vibration-damping and noise-silencing part is shown. (a) is a schematic cross-sectional view taken along the axis of this straight roller adapter and this roller adapter fixing member, (b) is a schematic side view viewed from the right side of (a), and (c) is a schematic plan view viewed from above of (a). [Figure 14] As a modified example of the vibration-damping mechanism and noise-reducing mechanism of the vibration-damping and noise-reducing straight roller adapter (cylindrical conveying part) suitable for the vibration-damping and noise-reducing staggered adapter type straight roller conveyor shown in Fig. 4 according to one embodiment of the present invention, a vibration-damping and noise-reducing straight roller adapter of an optimal vibration-damping and noise-reducing part of a polymer viscoelastic material is shown. (a) is a schematic cross-sectional view taken along the axis of this straight roller adapter and this roller adapter fixing member, (b) is a schematic side view viewed from the right side of (a), and (c) is a schematic plan view viewed from above of (a). [Figure 15] This is a dynamic viscoelasticity measurement chart of high-density polyethylene (PE) and polypropylene (PP), which are examples of polymer viscoelastic materials optimal for the vibration-damping and noise-silencing parts in Figure 14. [Figure 16] FIG. 14 shows a dynamic viscoelasticity measurement chart of 6-nylon (registered trademark), which is a representative example of polyamide, an example of a polymeric viscoelastic body optimal for the vibration-damping and noise-silencing portion. [Figure 17]FIG. 1(a) is a schematic cross-sectional view taken along a horizontal plane passing through the axis of the conveyor rollers to explain the difference in the distance between the contact points of the conveyed object and the rollers and, based on this, the influence of the height (length in the width direction) of the vibration-damping and noise-free conveying part in the vibration-damping and noise-free staggered arrangement straight roller conveyor of the present invention, in which a pair of straight conveyor rollers (1) and (2) form a basic unit and are arranged alternately at a constant pitch, for a conventional straight roller conveyor shown in FIG. 1(a) and one embodiment of the present invention shown in FIG. 2. 1(a) and (b) are schematic diagrams comparing the distance between the contact points between the transported object and the rollers of a pair of vibration-damping and noise-proof staggered straight conveyor rollers having different heights of vibration-damping and noise-proof conveying parts in the vibration-damping and noise-proof staggered straight roller conveyor according to one embodiment of the present invention shown in FIG. 2, and (c) is a schematic diagram of only adjacent conveyor rollers in FIG. 1(a) in order to compare the distance between the contact points between the transported object and the rollers between (a) and (b) and a conventional straight roller conveyor. [Figure 18] FIG. 6 is a schematic cross-sectional view of a vibration-damping, noise-damping, staggered adapter-type straight roller conveyor with width adjustment function, cut along a horizontal plane passing through the axis of a straight conveyor roller, in which a roller conveyor width adjustment mechanism is added to the vibration-damping, noise-damping, staggered adapter-type straight roller conveyor shown in FIG. 5 according to one embodiment of the present invention. [Figure 19] In the vibration-damping and noise-reducing staggered-type adapter-type straight roller conveyor with width adjustment function shown in Fig. 19, a configuration example of a width adjustment mechanism that performs the width adjustment function is shown. The width adjustment adapter in (a) is an adapter-type width adjustment member that can be attached to and detached from the shaft with a fixing member, (a-1) is a schematic cross-sectional view cut through the axis of this adapter and the adapter fixing member, (a-2) is a schematic side view viewed from the left side of (a-1), and (a-3) is a schematic plan view viewed from above of (a-1). The width adjustment sleeve in (b) is a cylindrical covering material that is press-fitted onto the shaft using a jig and functions as a roller, (b-1) is a schematic cross-sectional view cut through the axis of this sleeve, and (b-2) is a schematic side view viewed from the right side of (b-1). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0066] As a means for solving the problems of conventional roller conveyors, the technical content and effectiveness of the vibration-damping, noise-reducing staggered roller conveyor of the present invention have been described above, but since the roller conveyor has a complicated structure, the present invention will be described in more detail below using the embodiments shown in the drawings. However, the present invention is not limited to these, and various modifications can be made within the scope of the gist of the present invention, and the present invention is limited only by the technical ideas described in the claims.

[0067] FIG. 1 is a perspective schematic diagram of a gravity roller conveyor excluding a drive mechanism, a stand mechanism, etc., or a roller conveyor excluding a drive mechanism and a stand mechanism, etc., for explaining a conventional roller conveyor and clarifying a comparison with the present invention. (a) is a straight roller conveyor. 1 (b) is a curved roller conveyor that uses tapered rollers. 2 It is.

[0068] As can be seen from the figure, there is a certain gap between the adjacent straight rollers 110 and tapered rollers 210, which is one of the factors that determine the advantages and disadvantages of roller conveyors. Normally, four or more conveying rollers limit the number of conveyed objects that can be received, but by attaching a small device with a conveying direction changing function to the gap, a complex conveying route can be formed, making roller conveyors an indispensable conveying device for logistics facilities that require sorting and consolidation processes. Also, although it cannot be explained using a diagram, the metal rollers, which are hard elastic bodies with a small friction coefficient, are the cause of the disadvantages of roller conveyors. Since roller conveyors convey objects by contact with the metal rollers, which have a small friction coefficient, there are cases where the objects slide and collide with a guardrail (not shown), or fall depending on the shape of the objects. In particular, curved roller conveyors 2In the roller conveyor, centrifugal force acts on the transported goods, so the goods slide violently, and it is necessary to provide a guard rail (not shown) to prevent the goods from falling. In other words, roller conveyors have poor straightness, so measures must be taken to ensure safe and secure transport without damaging the goods. Furthermore, the contact between the hard elastic metal rollers and the goods causes severe vibration and noise due to contact and collision with metal, and since the work environment is indoors, this is one of the reasons for the poor working environment. One of the main causes of this noise is that the sound generated by the contact and collision between the metal rollers and the goods is easily propagated as solid-borne sound through the metal medium, and that the metal rollers are hollow cylindrical with a large height, so that the sound is easily propagated as air-borne sound and easily resonates.

[0069] Therefore, we developed roller conveyors to overcome the disadvantages without losing the advantages of roller conveyors. As a result, we developed the straight roller conveyor and the curved roller conveyor, as shown in Figures 2 and 3, respectively. 3 and vibration-damping, noise-reducing staggered curved roller conveyor 4 This led to the creation of the following.

[0070] FIG. 2 shows a vibration-damping and noise-damping staggered straight roller conveyor in which a pair of vibration-damping and noise-damping straight conveyor rollers 300 having different shapes, a vibration-damping and noise-damping straight conveyor roller (1) 300-1 and a vibration-damping and noise-damping straight conveyor roller (2) 300-2, are arranged alternately at a constant pitch 302 as basic units according to an embodiment of the present invention. 31 is a schematic plan view of the straight conveyor rollers cut along a horizontal plane passing through their axis lines S. The straight conveyor roller (1) 300-1 and the straight conveyor roller (2) 300-2 are respectively connected to their respective rotating shafts 320-1 / 2 (the rotating shafts of the straight conveyor roller (1) 300-1 and the straight conveyor roller (2) 300-2 are indicated by symbols 320-1 and 320-2, respectively, but in the drawings, both are collectively indicated as 320-1 / 2. The same applies below.) and a hollow cylindrical conveying portion 310-1 / 2 not including the rotating shaft 320-1 / 2 has a constant outer diameter 311-1 / 2 and height 312-1 / 2 with the axis line S of the rotating shaft 320-1 / 2 as the center line and is arranged at an interval 313-1 / 2 (pitch 314-1 / 2) longer than the height 312-1 / 2 and is aligned in a straight The straight conveyor roller (1) 300-1 and the straight conveyor roller (2) 300-2 are arranged in a positional relationship in which the cylindrical conveying portion 310-1 of the conveyor roller (1) 300-1 and the cylindrical conveying portion 310-2 of the second straight conveyor roller (2) 300-2 are not overlapped, and such cylindrical conveying portion 310-1 / 2 is equipped with a vibration damping mechanism and a noise reduction mechanism including a polymer viscoelastic material (not shown). The straight conveyor roller (1) 300-1 and the straight conveyor roller (2) 300-2 are configured such that the outer surface of the cylindrical conveying portion 310-1 of the straight conveyor roller (1) 300-1 is opposed to the rotating shaft 320 that forms the gap 313-1 / 2 of the cylindrical conveying portion 310-2 of the straight conveyor roller (2) 300-2 without coming into contact with each other.

[0071] As can be seen from the figure, the straight roller conveyor of this configuration, in which the conventional rollers are divided into small parts and the cylindrical conveying parts that come into contact with the transported goods are arranged in a staggered pattern, is a roller conveyor that is shaped like a conveyor belt with many small rollers spread over its surface, and since there are no widthwise gaps between the rollers of the conventional roller conveyor, sheet-like transported goods can be transported without falling, and restrictions on the transported goods can be reduced. In addition, the contact area between the cylindrical conveying parts and the transported goods of this staggered roller conveyor is significantly reduced compared to the contact area between the rollers of the conventional roller conveyor and the transported goods, and the normal force against the transported goods increases, so that the friction force proportional to the contact area increases and the sliding of the transported goods is suppressed. In addition, unlike the rollers of the conventional roller conveyor, the many cylindrical conveying parts act as protrusions and contact forces act on the transported goods from various directions, which prevents the transported goods from sliding and meandering, and improves the straight transportability.

[0072] On the other hand, with regard to vibration and noise, if a cylindrical conveying section that is structurally and materially unchanged from the conventional one is manufactured, the increase in normal force and the decrease in the contact area between the transported goods and the cylindrical conveying section will bring about changes in the quality of the impact that the cylindrical conveying section imparts to the transported goods and the accompanying impact noise, but the amount cannot be significantly reduced, so a vibration-damping mechanism and / or a noise-reduction mechanism including a polymer viscoelastic material is provided in the cylindrical conveying section.

[0073] FIG. 3 shows a vibration-damping and noise-proof staggered curved roller conveyor according to an embodiment of the present invention, in which a pair of vibration-damping and noise-proof curved conveyor rollers 400 having different shapes are arranged alternately at a certain pitch 402 with a vibration-damping and noise-proof staggered curved roller conveyor as a basic unit, with the intersection of the extensions of the axis S of the curved conveyor rollers 400 as the center of a circle. 4FIG. 1(a) is a schematic plan view of a curved conveyor roller cut by a horizontal plane passing through an axis S, and FIG. 1(b) is a schematic cross-sectional view of a curved conveyor roller cut by a vertical plane passing through a cutting line V. The curved conveyor roller (1) 400-1 and the curved conveyor roller (2) 400-2 each have a common apex angle 405 and a generating line G on their rotation shafts 420, with the axis S of the rotation shafts 420 as an axis of symmetry. The outer diameters of the first conveying section 411, the first conveying section large diameter 412, the second conveying section small diameter 413, the second conveying section large diameter 414, etc. are different, and the hollow truncated cone-shaped conveying section 410 not including the rotation shaft 420 having a constant height 415-1 / 2 is arranged in ascending order of the outer diameter from the center of the circle at intervals 416-1 / 2 (pitch 417-1 / 2) longer than the height 415-1 / 2. The curved conveyor roller (1) 400-1 and the curved conveyor roller (2) 400-2 are arranged in a positional relationship such that the truncated cone-shaped conveying section 410 of the curved conveyor roller (1) 400-1 and the curved conveyor roller (2) 400-2 are not overlapped, and the truncated cone-shaped conveying section 410 is equipped with a vibration-damping mechanism and a noise-reduction mechanism including a polymer viscoelastic body (not shown). The generating line G of the curved conveyor roller is inclined at an inclination angle 404 on a horizontal plane H, and the outer surface of the truncated cone-shaped conveying section 410 of the curved conveyor roller (1) 400-1 and the rotating shaft 420 forming the gap between the truncated cone-shaped conveying sections of the curved conveyor roller (2) 400-2 are opposed to each other without coming into contact with each other, and are configured to form a constant central angle 403 between the curved rollers.

[0074] In particular, because centrifugal force acts on the transported goods moving on the curved roller conveyor, the goods slide violently, and it is necessary to provide guardrails to prevent the goods from falling. There have been problems with collisions with the guardrails and falling depending on the shape of the goods being transported. 2 The vibration-damping and noise-reducing staggered curved roller conveyor of the present invention 4 By replacing it with the vibration-damping and noise-reducing staggered straight roller conveyor of the present invention, 3 For the same reason, the transported goods are 2 This enables stable and safe transportation according to the transportation route.

[0075] Also, carbon roller conveyors 2 The gap between the rollers of the curved conveyor is wider than that between the rollers of a straight conveyor, so it is a vibration-damping and quiet staggered type curved roller conveyor. 4 is a vibration-damping, quiet staggered straight roller conveyor. 3 It is believed to be more useful than that.

[0076] Vibration- and noise-reducing staggered straight roller conveyor shown in Figures 2 and 3 3 and carbon roller conveyor 4 The rollers can be constructed in various ways, but are not limited to these. As an example, Figs. 4 and 5 show the vibration-damping and noise-reducing staggered straight conveyor rollers shown in Fig. 2. 3 FIG. 4(a) is a schematic plan view of a pair of vibration-damping and noise-reducing staggered adapter-type straight conveyor rollers 500 with roller adapters (cylindrical conveying parts) mounted on the shaft, in which a cylindrical conveying part 510, which is a vibration-damping and noise-reducing straight roller adapter, is attached to a shaft 530. FIG. 4(b) is a schematic plan view of the vibration-damping and noise-reducing staggered adapter-type straight conveyor roller (1) 500-1 and the vibration-damping and noise-reducing staggered adapter-type straight conveyor roller (2) 500-2 that constitute the pair of vibration-damping and noise-reducing staggered adapter-type straight conveyor rollers 500. FIG. 5 shows a vibration-damping and noise-reducing staggered adapter-type straight roller conveyor that is configured by being properly arranged. 5 The latter is a schematic overall plan view of a pair of vibration-damping and noise-reducing adapter-type straight conveyor rollers 500.

[0077] As is clear from FIG. 4(a), the cylindrical conveying part 510 of the vibration-damping / silent straight roller adapter includes a conveyed object support part 511, a hollow vibration-damping / silent part 512, and a joint 513, and is inserted into a shaft 530 of a general conveyor roller and fixed by a roller adapter fixing member 520 such as an insert nut. The joint 513 has joint fitting parts (1) and (2) 513-1 and 513-2 at both ends to prevent slight movement of the roller adapter 510. When comparing the parts of FIG. 2 and FIG. 4, the outer diameter of the rotating shaft 320-1 / 2 in FIG. 2 is the outer diameter of the joint 513 in FIG. 4, the inner diameter of the joint 513 in FIG. 4 is the outer diameter of the shaft 530 in FIG. 4, and the inner diameter of the rotating shaft 320-1 / 2 in FIG. 2 is the inner diameter of the shaft 530 in FIG. 4.

[0078] In such vibration-damping and noise-reducing adapter type straight conveyor rollers (1), (2) 500-1, 500-2, roller adapters 510 are fixed in alternately shifted positions, ball bearings 540, pulleys 550, etc. are attached, and the rollers are appropriately arranged on a frame 570 at a constant pitch 501. Note that the driving device, stand, etc. are omitted from the drawing.

[0079] Fig. 6 shows a more detailed structure of the cylindrical conveying part 510 of the vibration-damping / silent straight roller adapter of Fig. 4. (a) is a schematic cross-sectional view taken along the axis of the roller adapter 510 and the roller adapter fixing member 520, (b) is a schematic side view seen from the right side of (a), and (c) is a schematic plan view seen from above of (a). As is clear from the figure, the roller adapter 510 includes a conveyed object support part 511, a hollow vibration-damping / silent part 512, a joint 513, and a roller adapter fixing member 520, and the joint 513 has joint fitting parts (1) and (2) 513-1 and 513-2 at both ends. In this embodiment, the vibration and noise suppression mechanism is a hollow vibration and noise suppression section 512, in which a cylindrical recess having the same center as joint 513 is partitioned by a partition wall and formed without penetrating from both ends of transported object support section 511, and 6-nylon (registered trademark), a representative example of PA, is used as an example of the polymer viscoelastic material. It has been experimentally confirmed that such a vibration and noise suppression mechanism can effectively reduce vibration and noise caused by collision with the transported object.

[0080] FIG. 7 is a vibration-damping, noise-reducing staggered straight roller conveyor shown in FIG. 2 according to one embodiment of the present invention. 3 One example of the vibration-damping, noise-reducing staggered integrally molded straight roller conveyor. 6 6 shows an outline of a pair of vibration-damping and noise-reducing integrally molded straight conveyor rollers 600 formed by injection molding, which constitute the above-mentioned. (a) is a schematic cross-sectional view of the essential parts cut by a horizontal plane passing through the axis S of the integrally molded straight conveyor roller 600 in which the cylindrical conveying part 610 of the vibration-damping and noise-reducing straight roller molded body is integrally molded with the rotating shaft 620, and (b) is a schematic cross-sectional view of the entire pair of vibration-damping and noise-reducing integrally molded straight conveyor rollers 600-1 and 600-2. The vibration-damping and noise-reducing straight roller molded body 610 is composed of a conveyed object support part 611 and a hollow vibration-damping and noise-reducing part 612, and has the same structure as that of FIG. 6. The integrally molded straight conveyor roller 600 is molded by injection molding of high-density PE, and in addition to vibration-damping and noise-reducing effects, it is also lightweight and serves as an energy-saving roller conveyor.

[0081] FIG. 8 is a vibration-damping, noise-reducing staggered curved roller conveyor shown in FIG. 3 according to one embodiment of the present invention. 4 An example of a vibration-damping, noise-reducing staggered adapter-type curved roller conveyor. 7 FIG. 9 is a schematic cross-sectional view showing an outline of a pair of vibration-damping and noise-reducing adapter-type curved conveyor rollers 700 constituting the pair of vibration-damping and noise-reducing adapter-type curved conveyor rollers 700, cut along a horizontal plane passing through the axis S of the curved conveyor roller 700. (a) and (b) show vibration-damping and noise-reducing adapter-type curved conveyor rollers 700-1 and 700-2 having different arrangements of the truncated cone-shaped conveying sections 710-1 to 12 of the vibration-damping and noise-reducing curved roller adapters constituting the pair of vibration-damping and noise-reducing adapter-type curved conveyor rollers 700. FIG. 9 shows a vibration-damping and noise-reducing staggered adapter-type curved roller conveyor in which the pair of vibration-damping and noise-reducing staggered adapter-type curved conveyor rollers 700-1 and 700-2 shown in FIG. 8 are inclined so that the conveying surface is horizontal and appropriately arranged. 7 (a) shows the carbon roller conveyor. 7 7(b) is a schematic cross-sectional view taken along a horizontal plane passing through the axis S of the conveyor 700-1, and FIG. 7(b) is a schematic cross-sectional view taken along a vertical plane passing through the cutting line V of FIG. 7(a). The intersection of the two generatrix lines G passing through the side surface of the conveyed object support section 711 and the extension lines of the generatrix lines G forms an apex angle 701, and the curved roller conveyor 700-1 is inclined at an inclination angle 702 that is 1 / 2 of the apex angle so that the generatrix lines G pass through the horizontal plane H.

[0082] As is clear from Fig. 8, the truncated cone-shaped conveying section 710 of the vibration-damping and noise-reducing curved roller adapter is arranged in the order of the size of the outer diameter of the truncated cone-shaped conveying sections 711-1 to 711-6, 711-7 to 711-12 in the adapter-type curved conveyor rollers (1) and (2) with different arrangements, and the other components of the vibration-damping and noise-reducing curved roller adapter 710 are composed of a conveyed object support section 711, a hollow vibration-damping and noise-reducing section 712, a joint 713, and a curved roller adapter fixing member 720, as shown in the curved roller adapter 710-3. The truncated cone-shaped conveying section 710 of this curved roller adapter has the same structure as the cylindrical conveying section 510 of the vibration-damping and noise-reducing straight roller adapter shown in Fig. 6, except for its truncated cone shape, and its details are shown in Fig. 10. Here, in order to synergistically enhance the vibration damping and noise prevention effects of the hollow vibration damping / silencer section 712, the curved roller adapter 710 uses PP as the polymer viscoelastic material, which exhibits the same effects as 6-nylon (registered trademark) and high-density PE.

[0083] Now, the vibration-damping and noise-reducing staggered straight roller conveyor of the present invention 3 and vibration-damping, noise-reducing staggered curved roller conveyor 4 The structure of the conveying part 310, 410 and the vibration-damping / silencer part (not shown) that contacts the conveyed object is not particularly limited, just as the conveying roller is not limited to the adapter type shown in Fig. 5 and 9 and the integrally molded type shown in Fig. 7, and the structures of the cylindrical conveying part 510, the truncated cone-shaped conveying part 710, and the cylindrical conveying part 610 of the roller molded body, which are roller adapters including the conveying part and the vibration-damping / silencer part, are not particularly limited. In Figs. 11 to 14, an example of the structure of the conveying part and the vibration-damping / silencer part that can be preferably adopted is further described using the cylindrical conveying part of the roller adapter.

[0084] 11 is characterized in that the transport object support section 811 that comes into contact with the transport object is drum-shaped. This avoids acute contact and collision with the transport object, and has the effect of preventing and reducing damage to the transport object and noise from the transport section. This shape has the effect of further enhancing the effect of the hollow vibration and noise suppression section 812.

[0085] 12 shows a vibration-damping and noise-reducing section 912 in which slits are provided penetrating from both ends of a cylindrical conveying section 910. It has been confirmed that this section has vibration-damping and noise-reducing effects that are comparable to those of the hollow vibration-damping and noise-reducing section 512 shown in FIG. 5 etc.

[0086] Because these are molded using polymer elastic materials, they exhibit excellent vibration-damping and noise-reducing properties due to the synergistic effect with the structure of each vibration-damping and noise-reducing section. On the other hand, the fact that polymers are a material that is easy to mold also provides the advantage of being able to mold the structures of a variety of conveying sections and vibration-damping and noise-reducing sections.

[0087] Furthermore, as shown in Fig. 14, a vibration-damping / silencer part 1012 molded from a polymer viscoelastic body having bubbles like a sponge is also a preferred embodiment. The bubbles may be closed or open. In addition, in such an embodiment, the sponge may be molded from a rubber such as urethane with a high friction coefficient, and then covered with a polymer viscoelastic body with a low friction coefficient, which has the advantage of broadening the range of materials that can be selected for the vibration-damping / silencer part 1012.

[0088] As described above, the structures of various roller adapters have been explained, but it has been found that roller adapters and conveyor rollers molded using polymer viscoelastic materials such as PE, PP, POM, PVC, PA, PC, and PAR that show either primary or secondary dispersion at room temperature or below in dynamic viscoelasticity measurements do not necessarily require structural vibration-damping and noise-reducing sections, and that it is sufficient to mold a roller adapter as shown in Fig. 14 using these polymer viscoelastic materials. The effects of such polymer viscoelastic materials have already been confirmed (for example, Non-Patent Documents 2-8), but there is no knowledge in this technical field as to what form and to what extent they have an effect.

[0089] As examples of such polymer viscoelastic bodies, high density PE, PP, and 6-Nylon (registered trademark) are taken, and temperature dispersion charts obtained by dynamic viscoelasticity measurements of these are shown in FIGS. 15 and 16.

[0090] FIG. 15 is a citation from Non-Patent Document 5 of the temperature dispersion spectrum obtained by dynamic viscoelasticity measurement of high density PE and PP. Here, the important points are the main dispersion α and the sub-dispersions β and γ observed when the temperature is raised while applying vibration. The temperature at which these dispersions start is an index suggesting the viscosity of the polymer suitable for the vibration-damping and noise-reducing staggered roller conveyor of the present invention. The main dispersion α is caused by the micro-Brownian motion of molecular chains, and the temperature at which it is observed is generally called the glass transition temperature (Tg). The sub-dispersions β and γ are caused by the thermal motion of the polymer side chains or the local twisting motion of the polymer main chain. As is clear from the figure, α-dispersion and β-dispersion of PP are observed near 0℃ and -100℃, respectively, and α-dispersion and β-dispersion of high density PE are observed near -10℃ and -120℃, respectively. Under normal conditions of use of roller conveyors, both high density PP and PE have such molecular mobility, and this viscous component absorbs vibration and noise generated by contact and collision with the transported goods, thereby exhibiting vibration damping and noise reduction properties. Note that here, a dispersion called α' is observed, but it is described as molecular motion in the quasi-crystalline region, and under normal conditions of use of roller conveyors, the molecular motion is frozen, and there is no relation to shock absorption and sound absorption properties.

[0091] FIG. 16 is a temperature dispersion chart obtained by dynamic viscoelasticity measurement of 6-nylon (registered trademark), cited from Non-Patent Document 3. Here again, the important point is the sub-dispersions β and γ observed when the temperature is raised while applying vibration. These are indicators for estimating the viscosity of a polymer by the temperature at which the thermal motion of the polymer side chains of the polymer or the local twisting motion of the polymer main chain begins, and such molecular motion occurs even below 0°C, and this viscous component is a dispersion characteristic of a viscoelastic body having vibration-damping and sound-silencing properties. Incidentally, the α dispersion, which corresponds to Tg and is the temperature at which the micro-Brownian motion of the molecular chain begins and has a greater effect on the viscosity of the polymer, is present at room temperature or higher, and in this case, it is considered that it does not contribute to sound absorption and impact absorption. However, from the viewpoint of mechanical strength, the higher the Tg, the better.

[0092] The roller conveyor of the present invention, in which the columnar transport parts are arranged in a staggered manner, can transport sheet-like transport objects that fall through the gaps extending in one direction between the rollers as in the conventional roller conveyor, but in order to expand the constraints on transporting objects with small external dimensions, it is necessary to shorten the distance between adjacent columnar transport parts. It is more preferable to arrange the columnar transport parts in a staggered manner so that the pitch is shorter than the pitch of the rollers in the straight roller conveyor, which is arranged at a predetermined pitch and has a conventional straight roller conveyor, i.e., a plurality of conveyor rollers having a common axis with the shaft, a circumferential thickness and an outer diameter of the columnar transport parts of the present invention, and a cylindrical roller having a height (height of the cylinder, width in the axial direction) corresponding to the shaft, and a width in the axial direction that is approximately equal to the length of the conveyor rollers, while maintaining a gap equal to the gap between the outer surface of the columnar transport parts of the present invention and the pivot shaft. For this purpose, it is preferable to make the pitch of adjacent pillar body conveying parts of the same rotation axis of the first and second straight conveyor rollers, which are basic units constituting the roller conveyor in which the pillar body conveying parts of the present invention are arranged in a staggered pattern, shorter than the pitch of the rollers of a conventional straight roller conveyor. This is because the pitch of the pillar body conveying parts of the adjacent first and second straight conveyor rollers, which have different rotation axes, is shorter than the pitch of adjacent pillar body conveying parts of the same rotation axis, and therefore, by making at least the maximum pitch of the pillar body conveying parts shorter than the pitch of the conventional straight roller conveyor, the constraints on the external shape of the conveyed objects can be reduced.

[0093] This explanation is illustrated in Fig. 17. This is a schematic cross-sectional view cut by a horizontal plane passing through the axis of the conveyor rollers to explain the difference in the distance between the contact points between the conveyed object and the rollers and the influence of the height (length in the width direction) 312 of the vibration-damping and noise-free conveying part in the vibration-damping and noise-free staggered arrangement straight roller conveyor of the present invention, which is based on the difference in the distance between the contact points between the conveyed object and the rollers, in the conventional straight roller conveyor shown in Fig. 1(a) and the vibration-damping and noise-free staggered arrangement straight roller conveyor in which a pair of straight conveyor rollers (1) and (2) are arranged alternately at a constant pitch as a basic unit, according to one embodiment of the present invention shown in Fig. 2. 17(a) and (b) are schematic diagrams comparing the distance between the contact points between the transported object and the rollers of a pair of vibration-damping and noise-proof staggered straight conveyor rollers having different heights 312 of the vibration-damping and noise-proof conveying section in the vibration-damping and noise-proof staggered straight roller conveyor of one embodiment of the present invention shown in FIG. 2, and FIG. 17(c) is a schematic diagram extracting only adjacent conveyor rollers in FIG. 1(a) in order to compare the distance between the contact points between the transported object and the rollers between FIGS. 17(a) and (b) and a conventional straight roller conveyor.

[0094] Consider a case where the thickness 316 and outer diameter 311 of the hollow cylindrical conveying section 310 in Figures 17(a) and (b), and the distance 315 between the outer surface of the hollow cylindrical conveying section and the rotating shaft are equal to the thickness 115 and outer diameter 112 of the roller in Figure 17(c), and the gap 114 between adjacent rollers. The distance (pitch, α1) between adjacent hollow cylindrical conveying sections 314-3 / 4 of the same rotating shaft 320 in Figure 17(a) is longer than the distance (pitch) 113 between adjacent rollers in Figure 17(c), and the distance (pitch, α2) between adjacent hollow cylindrical conveying sections 314-5 / 6 of the same rotating shaft 320 in Figure 17(b) is shorter than the distance (pitch) 113 between adjacent rollers in Figure 17(c). When the height 312 of the hollow cylindrical conveying section 310 is set as shown in Fig. 17(b), the shortest distance (pitch, β2) between the hollow cylindrical conveying sections of the adjacent rotating shafts is always shorter than the distance (pitch, α2) between the hollow cylindrical conveying sections 314-5 / 6, that is, the distance (pitch) 113 between the adjacent rollers in Fig. 17(c). Therefore, the vibration-damping and noise-reducing staggered straight conveyor designed in this way not only enables the conveyance of sheet-like objects that fall through the gaps between the rollers as shown in Fig. 17(c) by the staggered arrangement, but also enables the conveyance of objects with smaller volumes. The same can be said about the curved roller conveyor.

[0095] In the staggered roller conveyor of the present invention, a pair of conveyor rollers arranged at a predetermined interval in the width direction and a columnar conveying part of a predetermined height is appropriately arranged to function, but since the shape of the conveyed object and the specifications of the roller conveyor differ depending on the purpose of using the roller conveyor, gaps that are difficult to avoid and do not need to be considered in the roller conveyor using conventional cylindrical conveyor rollers in the relationship between the height and interval of the columnar conveying part and the width of the conveyor may occur in the roller conveyor of the present invention. Therefore, the roller conveyor of the present invention is characterized by being equipped with a width adjustment mechanism.

[0096] For example, the vibration-damping and noise-reducing staggered adapter-type straight roller conveyor shown in Figure 5. 517 is taken to convey small-volume objects while leaving the roller conveyor stand, frame, drive unit, etc., in place, the height of the hollow cylindrical conveying part 510 is shortened, which may result in a gap at one end of the roller conveyor. In such a case, an example is shown in FIG. 18 in which a width-adjusting conveying part 1280 of a width-adjusting adapter consisting of a conveying object support part 1281, a joint 1282, and a shaft insertion through hole 1283 is mounted on the shaft 1230 using an insert nut 1284 as a fixing member for the width-adjusting adapter.

[0097] FIG. 19 illustrates in more detail the width adjustable transport 1280, which is the width adjustable adaptor, and shows that a sleeve roller can be employed as a width adjustable sleeve 1290. [Industrial Applicability]

[0098] Conventional roller conveyors are indispensable conveying devices for logistics facilities that require complicated conveying routes for sorting and consolidation processes, but are usually limited to large-volume conveyed goods that can be received by four or more conveying rollers, and conveyance is performed by contact with metal rollers that have low friction and high hardness, so in addition to instability in the conveying direction due to slippage of the conveyed goods, there are problems with conveying noise and impact noise due to contact and collision with metal, and damage and straightness of the conveyed goods, and compared to belt conveyors, there are problems with the diversity of conveyed goods, as well as inferior stability, safety, quietness, and shock absorption in conveying. However, the present invention overcomes these problems without compromising the advantages of conventional roller conveyors, such as the accumulating function and the free control of the conveying direction of the conveyed goods using the roller gap, and provides a roller conveyor that overcomes these problems and improves the diversity of conveyed goods, as well as the stability, safety, quietness, and shock absorption in conveying, so that the applications of roller conveyors can be expanded, logistics efficiency can be further improved, and industrial applicability is extremely high.

[0099] In addition, the knowledge of the present invention regarding the shape and material of the rollers that make up the roller conveyor, as well as the knowledge of the structure and mechanism of the transport rollers using such rollers and the roller conveyor composed of such transport rollers, is highly likely to be applicable to shock absorption, noise reduction, and transport direction control of various transport devices. [Explanation of symbols]

[0100] 1 Straight Roller Conveyor 100 Straight Conveyor Rollers 110 Straight roller 111 Roller height 112 Roller outer diameter 113 Roller Pitch 114 Gap between rollers 115 Roller thickness 120 Shaft 130 frames 2 Carbon Roller Conveyor 200 Curved conveyor tapered roller 210 Tapered roller 211 Tapered roller width 212 Small Path 213 Large diameter 214 Roller Pitch 215 Conveyor center radius 216 Central angle between rollers 220 Shaft 230 frames 3 Vibration-damping, quiet staggered straight roller conveyor 300 Pair of vibration-damping and noise-reducing straight conveyor rollers 300-1~6 Vibration-damping and noise-reducing straight conveyor rollers (1)~(6) 301 Straight conveyor roller width 302 Straight conveyor roller pitch 310-1~6 Vibration-damping and noise-reducing straight conveyor rollers (1)~(6) Vibration-damping and noise-reducing hollow cylindrical conveying parts 311-1~6 Outer diameter of vibration-damping and noise-damping hollow cylindrical conveying part of vibration-damping and noise-damping straight conveyor rollers (1)~(6) 312-1~6 Height of vibration-damping and noise-proof hollow cylindrical conveying part of vibration-damping and noise-proof straight conveyor rollers (1)~(6) 313-1~6 Vibration-damping and noise-reducing straight conveyor rollers (1)~(6) Vibration-damping and noise-reducing hollow cylindrical conveying section spacing 314-1~6 Pitch (α) of vibration-damping and noise-silent hollow cylindrical conveying part of vibration-damping and noise-silent straight conveyor rollers (1)~(6) 315 Vibration-damping and noise-reducing straight conveyor rollers (1) to (6) Vibration-damping and noise-reducing hollow cylindrical conveying part and clearance between the outer surface and the rotating shaft 316 Vibration- and Sound-Damping Straight Conveyor Rollers (1) to (6) Thickness of Vibration- and Sound-Damping Hollow Cylindrical Conveying Part 320-1~6 Vibration-damping and noise-reducing straight conveyor roller (1)~(6) rotating shaft 321-1~6 Outer diameter of the rotating shaft of vibration-damping and noise-reducing straight conveyor rollers (1)~(6) 330 Ball Bearing 340 Pulley 350 Conveyor Belt 360 Frames 4 Vibration- and noise-reducing staggered curved roller conveyor 400 Pair of vibration-damping and noise-reducing curved conveyor rollers 400-1, 2 Vibration- and noise-reducing curved conveyor rollers (1), (2) 401 Curved conveyor roller width 402 Curved conveyor roller pitch 403 Central angle between curved conveyor rollers 404 Inclination angle of curved conveyor rollers 405 Curved Conveyor Roller Apex Angle 410 Vibration- and noise-reducing hollow truncated cone-shaped conveying section 411, 412 First conveying section small diameter, large diameter 413, 414 Second conveying section small diameter, large diameter 415-1, 2 Height of vibration-damping and noise-damping hollow truncated cone-shaped conveying part of vibration-damping and noise-damping curved conveyor roller (1) and (2) 416-1, 2 Vibration-damping and noise-reducing curved conveyor rollers (1) and (2) - Distance between vibration-damping and noise-reducing hollow truncated cone-shaped conveying parts 417-1, 2 Pitch of vibration-damping and noise-damping hollow truncated cone-shaped conveying part of vibration-damping and noise-damping curved conveyor roller (1) and (2) 420 Rotating shaft 421 Outer diameter of rotating shaft 430 Ball Bearing 440 Pulley 450 Conveyor Belt 460 frames 5 Vibration-damping, noise-reducing staggered adapter-type straight roller conveyor 500 Pair of vibration-damping and noise-reducing adapter-type straight conveyor rollers 500-1, 2 Vibration- and noise-reducing adapter-type straight conveyor roller (1), (2) 501 Vibration-damping and noise-reducing adapter type straight conveyor roller pitch 510 Vibration-damping and noise-reducing straight roller adapter with hollow cylindrical conveying section 511 Transport object support section 512 Hollow vibration and noise suppression section 513 Joint 513-1, 2 Fittings (1), (2) 513-3 Shaft insertion through hole 520 Roller adapter fixing material (insert nut) 530 Shaft 540 Ball Bearing 550 Pulley 560 Conveyor Belt 570 frames 6 Vibration-damping, noise-reducing staggered integrally molded straight roller conveyor 600 A pair of vibration-damping, noise-reducing integrally molded straight conveyor rollers 600-1, 2 Vibration-damping, noise-reducing integrally molded straight conveyor rollers (1), (2) 610 Vibration-damping and noise-reducing straight roller molded body hollow cylindrical conveying part 611 Transport object support part 612 Hollow vibration and noise suppression section 620 Roller shaft 630 Ball Bearing 640 Pulley 7 Vibration-damping, noise-reducing staggered adapter-type curved roller conveyor 700 A pair of vibration-damping and noise-reducing adapter-type curved conveyor rollers 700-1, 2 Vibration- and noise-reducing adapter-type curved conveyor rollers (1), (2) 701 Apex angle of curved conveyor roller 702 Inclination angle of curved conveyor rollers 710 Vibration-damping and noise-reducing curved roller adapter with hollow truncated cone-shaped conveying section 710-1~6 Adapter type curved conveyor roller (1) curved roller adapter (1)~(6) 710-7~12 Adapter type curved conveyor roller (2) curved roller adapter (7)~(12) 711 Transport object support part 712 Hollow vibration and noise suppression section 713 Joint 713-1, 2 Fittings (1), (2) 713-3 Shaft insertion through hole 720 Curved roller adapter fixing member 730 Shaft 740 Ball Bearing 750 Pulley 760 Conveyor Belt 770 frames 810 Vibration-damping, silent straight roller adapter with hollow drum-shaped conveying section 811 Transport object support part 812 Hollow vibration and noise suppression section 813 Joint 813-1, 2 Fittings (1), (2) 813-3 Shaft insertion through hole 820 Roller adapter fixing member 910 Vibration-damping and noise-reducing straight roller adapter hollow cylindrical conveying part 911 Transport object support part 912 Hollow vibration and noise damping section 913 Joint 913-1, 2 Fittings (1), (2) 913-3 Shaft insertion through hole 920 Roller adapter fixing member 1010 Vibration-damping, silent straight roller adapter with hollow cylindrical conveying section 1011 Transport object support section 1012 Sponge-like vibration and noise damping part 1013 Joint 1013-1, 2 Fittings (1), (2) 1013-3 Shaft insertion through hole 1020 Roller adapter fixing part 1110 Vibration-damping and noise-reducing straight roller adapter with hollow cylindrical viscoelastic transport part 1111 Transport object support section 1113 Joint 1113-1, 2 Fittings (1), (2) 1113-3 Shaft insertion through hole 1120 Roller adapter fixing part 12 Vibration-damping, quiet staggered, width-adjustable adapter-type straight roller conveyor 1200 A pair of vibration-damping and noise-reducing adapter-type straight conveyor rollers with adjustable width function 1200-1, 2 Adapter type straight conveyor roller with vibration damping and noise reduction function and width adjustment function (1), (2) 1210 Vibration-damping and noise-reducing straight roller adapter with hollow cylindrical conveying section 1211 Transport object support section 1212 Hollow vibration and noise damping section 1213 Joint 1220 Roller adapter fixing member 1230 Shaft 1240 Ball Bearing 1250 Pulley 1260 Conveyor Belt 1270 frames 1280 Width adjustment adapter width adjustment transport part 1281 Transport object support part 1282 Joint 1283 Shaft insertion through hole 1284 Width adjustment adapter fixing part (insert nut) 1290 Width adjustment sleeve 1291 Transport section 1292 Shaft insertion through hole S axis H horizontal plane V cutting line G busbar α Distance (pitch) between adjacent hollow cylindrical conveying parts on the same rotation axis β The shortest distance (pitch) between the hollow cylindrical conveying parts at the shortest positions of adjacent rotating shafts

Claims

1. In a straight roller conveyor, a first straight conveyor roller and a second straight conveyor roller, which have a common rotation axis and are substantially equal in width but different in shape, are arranged as a basic unit at substantially constant axial intervals of the rotation axis so that both ends are aligned, a first straight conveyor roller and a second straight conveyor roller, each of which has a hollow cylindrical pillar transport section not including the pivot shaft, the pillar transport section having a substantially constant outer diameter and height with the axis line shared by the first straight conveyor roller and the second straight conveyor roller as a center line, the hollow cylindrical pillar transport section not including the pivot shaft being disposed at an interval longer than the height and in a positional relationship such that the pillar transport section of the first straight conveyor roller and the pillar transport section of the second straight conveyor roller do not overlap, and the pillar transport section is provided with a vibration damping mechanism and / or a noise reduction mechanism including a polymer viscoelastic material, A straight roller conveyor characterized in that the pivot shaft forming the gap between the pillar transporting portions of the second straight conveyor rollers is configured to face the outer surface of the pillar transporting portion of the first straight conveyor roller without contacting the outer surface of the pillar transporting portion of the second straight conveyor roller.

2. The straight roller conveyor according to claim 1, characterized in that a plurality of conveyor rollers having a common axis with a shaft, the circumferential thickness of the cylindrical body transporting parts of the first and second straight conveyor rollers being equal to the outer diameter, the shaft being provided with cylindrical rollers of a height corresponding to the shaft, the width length in the axial direction being approximately equal, the gap being equal to the gap between the outer surface of the cylindrical body transporting part and the pivot axis of the cylindrical body transporting part, and the pitch of adjacent cylindrical body transporting parts on the same pivot axis being shorter than the pitch of a straight roller conveyor arranged at a predetermined pitch, the pitch of adjacent cylindrical body transporting parts on the same pivot axis being shorter than the pitch of the straight roller conveyor.

3. In a straight roller conveyor, a third straight conveyor roller and a fourth straight conveyor roller, which have a common rotation axis and are substantially equal in width but different in shape, are arranged alternately at a substantially constant axial interval of the rotation axis so that both ends are aligned, The third straight conveyor roller and the fourth straight conveyor roller are each provided with a rotation axis, a spheroid having a major axis of symmetry on the axis line shared by the third straight conveyor roller and the fourth straight conveyor roller, cut at a right angle to the axis line and at a position equidistant from both ends of the spheroid, and a hollow drum-shaped pillar transport section not including the rotation axis, the pillar body transport section having a height approximately constant as the outer diameter of the outer surface of the spheroid with the axis line as a center line, is disposed at an interval longer than the height and in a positional relationship such that the pillar body transport section of the third straight conveyor roller and the pillar body transport section of the fourth straight conveyor roller do not overlap, A third straight conveyor roller and a fourth straight conveyor roller are provided with a vibration damping mechanism and / or a noise suppressing mechanism including a vibration damping mechanism, A straight roller conveyor characterized in that the outer surface of the columnar transporting portion of the third straight conveyor roller and the pivot shaft forming the gap between the columnar transporting portions of the fourth straight conveyor roller are configured to face each other without contacting each other.

4. The straight roller conveyor according to claim 3, characterized in that a plurality of conveyor rollers having a common axis with a shaft, the maximum circumferential thickness of the cylindrical body transporting parts of the third and fourth straight conveyor rollers being equal to the maximum outer diameter of the outer surface, and the shaft being provided with cylindrical rollers of a height corresponding to the shaft, the width length in the axial direction being approximately equal, the gap being equal to the gap between the outer surface of the cylindrical body transporting part and the pivot axis of the cylindrical body transporting part, and the pitch of adjacent cylindrical body transporting parts on the same pivot axis is shorter than the pitch of a straight roller conveyor arranged at a predetermined pitch, the pitch of adjacent cylindrical body transporting parts on the same pivot axis being shorter than the pitch of the straight roller conveyor.

5. A curved roller conveyor in which a first curved conveyor roller and a second curved conveyor roller having a common rotation axis and substantially equal widths but different shapes are arranged as a basic unit, the first curved conveyor roller and the second curved conveyor roller are arranged alternately at intervals of a central angle formed by adjacent axes, the first curved conveyor roller and the second curved conveyor roller being arranged so that both ends are substantially aligned and the intersection of the extensions of the axes of the first curved conveyor roller and the second curved conveyor roller is the center of a circle, a hollow cylindrical pillar transport section not including the pivot axis, the pillar transport section having a substantially constant outer diameter and a substantially constant height with the axis line shared by the first curved conveyor roller and the second curved conveyor roller as a center line, is disposed at an interval longer than the height and in a positional relationship such that the pillar transport section of the first curved conveyor roller and the pillar transport section of the second curved conveyor roller do not overlap, and the pillar transport section is provided with a vibration damping mechanism and / or a noise reduction mechanism including a polymer viscoelastic material, A curved roller conveyor characterized in that the outer surface of the cylindrical body transport portion of the first curved conveyor roller and the rotating shaft that forms the gap between the cylindrical body transport portions of the second curved conveyor roller are configured to face each other without contacting each other.

6. 6. The curved roller conveyor according to claim 5, characterized in that the curved roller conveyor has a common axis with a shaft, the circumferential thickness of the cylindrical body transporting parts of the first and second curved conveyor rollers is equal to the outer diameter, the shaft is provided with cylindrical rollers of a height corresponding to the shaft, and the width length in the axial direction is approximately equal, and an equal gap is maintained at a position corresponding to the gap between the outer surface of the cylindrical body transporting part and the pivot axis of the cylindrical body transporting part, and the pitch of adjacent cylindrical body transporting parts of the same pivot axis is shorter than the pitch of the curved roller conveyor arranged at a predetermined central angle formed by the axes of adjacent conveyor rollers and one convergence point of extensions of the axes, with the convergence point being the center of a circle.

7. A curved roller conveyor in which a third curved conveyor roller and a fourth curved conveyor roller having a common rotation axis and substantially the same width but different shapes are arranged as a basic unit, the third curved conveyor roller and the fourth curved conveyor roller are arranged alternately at substantially regular intervals with both ends substantially aligned and the central angle formed by adjacent axes being set at substantially regular intervals, The third curved conveyor roller and the fourth curved conveyor roller are each formed by cutting a spheroid having a long axis of symmetry on the axis line shared by the third curved conveyor roller and the fourth curved conveyor roller at a right angle to the axis line and at a position equidistant from both ends of the spheroid, and a hollow drum-shaped pillar transport section not including the axis of rotation, having a height approximately constant with the outer diameter of the outer surface of the spheroid and a center line of the axis line, is disposed at an interval longer than the height and in a positional relationship such that the pillar transport section of the third curved conveyor roller and the pillar transport section of the fourth curved conveyor roller do not overlap, and the pillar transport section is provided with a vibration damping mechanism and / or a noise reduction mechanism including a polymer viscoelastic material, A curved roller conveyor characterized in that the outer surface of the cylindrical body transporting portion of the third curved conveyor roller and the rotating shaft that forms the gap between the cylindrical body transporting portions of the fourth curved conveyor roller are configured to face each other without contacting each other.

8. 8. The curved roller conveyor according to claim 7, characterized in that the plurality of conveyor rollers have a common axis with the shaft, and are provided with cylindrical rollers on the shaft that are equal to the circumferential thickness of the cylindrical body transporting parts of the third and fourth curved conveyor rollers and the maximum outer diameter of the outer diameter of the outer surface, and have a height corresponding to the shaft, and the width length in the axial direction is approximately equal, and an equal gap is maintained at a position corresponding to the gap between the outer surface of the cylindrical body transporting part and the pivot axis of the cylindrical body transporting part, and the pitch of adjacent cylindrical body transporting parts of the same pivot axis is shorter than the pitch of a curved roller conveyor arranged at a predetermined central angle formed by the axes of adjacent conveyor rollers and one convergence point of extensions of the axes, with the convergence point being the center of a circle.

9. A curved roller conveyor in which a fifth curved conveyor roller and a sixth curved conveyor roller, which have a common rotation axis and are substantially equal in width but different in shape, are arranged as a basic unit, and the intersection of the extensions of the axes of the fifth curved conveyor roller and the sixth curved conveyor roller is the center of a circle, both ends of the circle are substantially aligned, and the central angles formed by the adjacent axes are substantially equal to each other, The fifth curved conveyor roller and the sixth curved conveyor roller are each a truncated cone formed by cutting a cone having a predetermined apex angle with the axis of the fifth curved conveyor roller and the axis of the sixth curved conveyor roller as an axis of symmetry at a certain interval to a certain height shorter than the certain interval, and hollow truncated cone-shaped pillar body transport parts not including the pivot axis and having an outer diameter of the outer surface of the truncated cone and a substantially constant height with the axis as a center line are disposed at the certain interval and in a positional relationship such that the pillar body transport parts of the fifth curved conveyor roller and the pillar body transport parts of the sixth curved conveyor roller do not overlap, and the pillar body transport parts are provided with a vibration damping mechanism and / or a noise reduction mechanism including a polymer viscoelastic material, A curved roller conveyor characterized in that the rotation axis that forms the gap between the cylindrical body transporting portion of the sixth curved conveyor roller and the outer surface of the cylindrical body transporting portion of the fifth curved conveyor roller are configured to face each other without contacting each other.

10. 10. The curved roller conveyor according to claim 9, characterized in that a plurality of conveyor rollers having a common axis with a shaft, a truncated cone-shaped roller on the shaft having an apex angle equal to the apex angle of the fifth and sixth straight conveyor rollers and a height corresponding to the shaft, and having approximately the same width length in the axial direction, maintain equal gaps at positions corresponding to the gap between the outer surface of the cylindrical body conveying section and the pivot axis of the cylindrical body conveying section, and are arranged at a predetermined central angle formed by the axes of adjacent conveyor rollers and one convergence point of extensions of the axes as the center of a circle, the pitch of adjacent cylindrical body conveying sections on the same pivot axis being shorter than the pitch of the curved roller conveyor.

11. A curved roller conveyor in which a fifth curved conveyor roller and a sixth curved conveyor roller, which have a common rotation axis and are substantially equal in width but different in shape, are arranged as a basic unit, and the intersection of the extensions of the axes of the fifth curved conveyor roller and the sixth curved conveyor roller is the center of a circle, both ends of the circle are substantially aligned, and the central angles formed by the adjacent axes are substantially equal to each other, The fifth curved conveyor roller and the sixth curved conveyor roller are each a truncated cone formed by cutting a cone having a predetermined apex angle with the axis of the fifth curved conveyor roller and the axis of the sixth curved conveyor roller as an axis of symmetry at a certain interval to a certain height shorter than the certain interval, and hollow truncated cone-shaped pillar body transport parts not including the pivot axis and having an outer diameter of the outer surface of the truncated cone and a substantially constant height with the axis as a center line are disposed at the certain interval and in a positional relationship such that the pillar body transport parts of the fifth curved conveyor roller and the pillar body transport parts of the sixth curved conveyor roller do not overlap, and the pillar body transport parts are provided with a vibration damping mechanism and / or a noise reduction mechanism including a polymer viscoelastic material, a rotation axis of the fifth curved conveyor roller that forms a gap between the cylindrical body conveying portion of the sixth curved conveyor roller and an outer surface of the cylindrical body conveying portion of the fifth curved conveyor roller, the rotation axis being spaced apart from the cylindrical body conveying portion of the sixth curved conveyor roller, being configured to face each other without contacting each other;

12. 12. The curved roller conveyor according to claim 11, characterized in that a plurality of conveyor rollers having a common axis with a shaft, a truncated cone-shaped roller on the shaft having an apex angle equal to the apex angle of the fifth and sixth straight conveyor rollers and a height corresponding to the shaft, and having approximately the same width length in the axial direction, are arranged at equal gaps at positions corresponding to the gap between the outer surface of the cylindrical body conveying section and the pivot axis of the cylindrical body conveying section, and are arranged at a predetermined central angle formed by the axis lines of adjacent conveyor rollers and one convergence point of extensions of the axes as the center of a circle, and the inclination angle of the conveyor rollers formed by the axes and the horizontal plane is approximately 1 / 2 of the apex angle formed by two generatrix of the truncated cone-shaped roller.

13. 2. The straight roller conveyor according to claim 1, wherein the columnar transport portion is integrally formed with the rotating shaft.

14. 6. The curved roller conveyor according to claim 5, wherein the columnar transport portion is integrally formed with the rotating shaft.

15. 12. The curved roller conveyor according to claim 11, wherein the columnar transport portion is integrally formed with the rotating shaft.

16. The first and second straight conveyor rollers are straight conveyor rollers in which the columnar body transport portion is incorporated into the rotating shaft, A shaft having a length substantially equal to the rotation axis and an outer diameter equal to the rotation axis; a hollow columnar body having the same axis as the columnar body conveying part, which is integrally formed with the columnar body conveying part and can be fitted to the shaft outer peripheral surface, and a joint part which engages with the columnar body conveying part so as to ensure a gap longer than the height of the columnar body conveying part; The shaft, the column transport part, and the joint part are assembled using a fixing member for fastening them so that they can rotate synchronously, 2. The straight roller conveyor according to claim 1, wherein the rotating shaft is a straight conveyor roller constituted by the shaft and the joint portion.

17. The first and second curved conveyor rollers are curved conveyor rollers in which the columnar body transport portion is incorporated into the rotating shaft, A shaft having a length substantially equal to the rotation axis and an outer diameter equal to the rotation axis; a hollow columnar body having the same axis as the columnar body conveying part, which is integrally formed with the columnar body conveying part and can be fitted to the shaft outer peripheral surface, and a joint part which engages with the columnar body conveying part so as to ensure a gap longer than the height of the columnar body conveying part; The shaft, the column transport part, and the joint part are assembled using a fixing member for fastening them so that they can rotate synchronously, 6. The curved roller conveyor according to claim 5, wherein the rotating shaft is a curved conveyor roller constituted by the shaft and the joint portion.

18. The fifth and sixth curved conveyor rollers are curved conveyor rollers in which the columnar body transport portion is incorporated into the rotating shaft, A shaft having a length substantially equal to the rotation axis and an outer diameter equal to the rotation axis; a hollow columnar body having the same axis as the columnar body conveying part, which is integrally formed with the columnar body conveying part and can be fitted to the shaft outer peripheral surface, and a joint part which engages with the columnar body conveying part so as to ensure a gap longer than the height of the columnar body conveying part; The shaft, the column transport part, and the joint part are assembled using a fixing member for fastening them so that they can rotate synchronously, 12. The curved roller conveyor according to claim 11, wherein the rotating shaft is a curved conveyor roller constituted by the shaft and the joint portion.

19. 14. The straight roller conveyor according to any one of claims 1 to 4 and 13, characterized in that the rotating shaft is a cylindrical body.

20. The curved roller conveyor according to any one of claims 5 to 12, 14 and 15, characterized in that the rotating shaft is a cylindrical body.

21. 17. The straight roller conveyor of claim 16, wherein the shaft is a cylindrical body.

22. 19. A curved roller conveyor according to claim 17 or 18, characterized in that the shaft is cylindrical.

23. The straight roller conveyor according to any one of claims 1 to 4, 13 and 16, characterized in that the first to fourth straight conveyor rollers are further provided with width adjustment mechanisms.

24. The curved roller conveyor according to any one of claims 5 to 12, 14, 15, 17 and 18, characterized in that the first to sixth curved conveyor rollers are further provided with width adjustment mechanisms.

25. A straight roller conveyor as described in any one of claims 1 to 4, 13 and 16, characterized in that the vibration damping mechanism and / or the noise reduction mechanism are made of the polymer viscoelastic material in part or in whole of the columnar transport section.

26. The curved roller conveyor according to any one of claims 5 to 12, 14, 15, 17 and 18, characterized in that the vibration damping mechanism and / or the noise reduction mechanism are made of the polymer elastomer in part or in whole of the columnar transport section.

27. 17. The straight roller conveyor according to any one of claims 1 to 4, 13 and 16, wherein the polymeric viscoelastic material is an uncrosslinked polymer.

28. The curved roller conveyor according to any one of claims 5 to 12, 14, 15, 17 and 18, characterized in that the polymer viscoelastic body is an uncrosslinked polymer.

29. 17. The straight roller conveyor according to any one of claims 1 to 4, 13 and 16, characterized in that the polymer viscoelastic body has a static friction coefficient μs that satisfies 0.15≦μs≦0.

40.

30. 19. The curved roller conveyor according to any one of claims 5 to 12, 14, 15, 17 and 18, characterized in that the static friction coefficient μs of the polymer viscoelastic body satisfies 0.15≦μs≦0.

40.

31. 17. The straight roller conveyor according to any one of claims 1 to 4, 13 and 16, characterized in that the polymer viscoelastic body has a primary dispersion and / or a secondary dispersion at 25°C or less in dynamic viscoelasticity measurement.

32. ３２ 19. The curved roller conveyor according to any one of claims 5 to 12, 14, 15, 17 and 18, characterized in that the polymeric viscoelastic body has a primary dispersion and / or a secondary dispersion at 25°C or less in dynamic viscoelasticity measurement.

33. 17. The straight roller conveyor according to any one of claims 1 to 4, 13 and 16, characterized in that the polymer viscoelastic material is one or more selected from polyethylene (PE), polypropylene (PP), polyoxymethylene (POM), polyvinyl chloride (PVC), polyamide (PA), polycarbonate (PC), poly(acrylonitrile-butadiene-styrene) (ABS), polyphenylene ether (PPE), polyphenylene sulfide (PPS), polysulfone (PSU), polyethersulfone (PESU), polyetheretherketone (PEEK), polyetherimide (PEI), polyamideimide (PAI) and polyarylate (PAR).

34. The curved roller conveyor according to any one of claims 5 to 12, 14, 15, 17, and 18, characterized in that the polymer viscoelastic material is one or more selected from polyethylene (PE), polypropylene (PP), polyoxymethylene (POM), polyvinyl chloride (PVC), polyamide (PA), polycarbonate (PC), poly(acrylonitrile-butadiene-styrene) (ABS), polyphenylene ether (PPE), polyphenylene sulfide (PPS), polysulfone (PSU), polyethersulfone (PESU), polyetheretherketone (PEEK), polyetherimide (PEI), polyamideimide (PAI), and polyarylate (PAR).

35. 26. The straight roller conveyor according to claim 25, further comprising a space formed in the columnar transport section as the vibration damping mechanism and / or the noise reducing mechanism.

36. The curved roller conveyor according to claim 26, characterized in that the vibration damping mechanism and / or the noise reduction mechanism further comprises a space formed in the columnar transport section.

37. 36. The straight roller conveyor according to claim 35, wherein the space is a cavity recessed from both ends of the columnar transporting portion in the axial direction without penetrating therethrough.

38. The curved roller conveyor according to claim 36, characterized in that the space is a cavity recessed without penetrating both ends of the columnar transport section in the axial direction.

39. 38. The straight roller conveyor according to claim 37, wherein the cavity is a cylindrical cavity having an inner diameter equal to the radius of the pivot shaft and an outer diameter shorter than the outer diameter of the cylindrical transport portion.

40. 39. The curved roller conveyor according to claim 38, wherein the cavity is a cylindrical cavity having an inner diameter equal to the radius of the pivot shaft and an outer diameter shorter than the outer diameter of the cylindrical transport portion.

41. 40. The straight roller conveyor of claim 39, wherein the cavity is partitioned by a plurality of partitions in a direction from the axis to the outer surface of the column carrying portion.

42. 41. The curved roller conveyor of claim 40, wherein the cavity is partitioned by a plurality of partitions extending from the axis in a direction toward the outer surface of the column transport portion.

43. 36. The straight roller conveyor of claim 35, wherein the space is a slit drilled from both ends of the columnar transport section in the axial direction.

44. The curved roller conveyor according to claim 36, characterized in that the space is a slit drilled from both ends of the columnar transport section in the axial direction.

45. 36. A straight roller conveyor as claimed in claim 35, characterized in that the spaces are closed cells.

46. 37. The curved roller conveyor according to claim 36, wherein the spaces are closed cells.

47. 36. A straight roller conveyor as claimed in claim 35, characterized in that the spaces are open cells.

48. 37. The curved roller conveyor according to claim 36, wherein the spaces are open cells.

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