Cross-feed conveyor device

Abstract

In a conventional lateral feed conveyor, when the conveyed object is rice grains, there is a problem that the surface turns black and discolors. 【Solution means】A conveying conveyor 7 for conveying the conveyed object supplied into a case 1 formed long in the conveying direction is provided. The conveying conveyor 7 is configured by winding an endless chain 13 having conveyors 12 attached at predetermined intervals around a driven gear 8 and a driving gear 10. The conveyor 12 is formed of a vertical plate member made of synthetic resin in a side view. In a front view, the lower part of the conveyor 12 forms a rectangular lower conveying part 25, the upper part of the lower conveying part 25 is formed into an intermediate conveying part 26 with a short lower side and a long upper side, an upper conveying part 27 having a rectangular shape is formed above the intermediate conveying part 26, both side links 30 of the endless chain 13 are positioned at the left and right central portions of the upper conveying part 27, the intermediate conveying part 26, and the lower conveying part 25 of the conveyor 12, and the left and right side edges of each conveyor 12 are configured to move in a state of being supported by a support mechanism X with a gap S with respect to the inner surface of the case 1.

Description

[Technical Field]

[0001] The present invention relates to a transverse feed conveying device. [Background technology]

[0002] Conventionally, a transport conveyor is provided to transport objects from a supply section provided in a case to a discharge section, and the transport conveyor is configured by wrapping an endless chain with a transport body attached at a predetermined interval, and an inclined support plate section is provided at the upper end of a lower upright plate that stands on the left and right sides of the bottom plate of the case, and is positioned outward as it goes upward.The inclined support plate section supports the oblique side section of the transport body, and a gap is provided between the lower end of the transport body and the bottom plate of the case, thereby transporting the objects inside the case (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-85111 Summary of the Invention [Problem to be solved by the invention]

[0004] In the known transverse conveying device, when the object being conveyed is rice grains, there is a problem that the surface of the grains turns black. An investigation into the black discoloration of rice grains revealed that it is well known that lotus root turns black when cooked in an iron pot, and that the cause of this discoloration is a chemical reaction that occurs between vegetable components such as polyphenols (tannins) and the iron in the iron pot. However, simply storing rice grains in a storage tank made of stainless steel containing iron has not resulted in discoloration. When looking into it like this, although the rice grains usually do not discolor simply by contact with stainless steel, the exact reason for the discoloration of the rice grains in the cross-feed conveyor remains unclear. However, as a difference between the cross-feed conveyor and the storage tank, it is judged that the conveying resistance in the cross-feed conveyor is greater than that in the storage tank. When trying to reduce the contact resistance between the conveyor and the inner surface of the case, it was found that the occurrence of the discoloration phenomenon of the rice grains was suppressed. This application provides a cross-feed conveyor that suppresses the contact resistance between the conveyor and the inner surface of the case, suppresses the occurrence of discoloration of the conveyed material, and has low abnormal noise, noise, and vibration.

Means for Solving the Problems

[0005] The invention according to claim 1 is provided with a conveying conveyor 7 for conveying the conveyed material supplied from the supply unit 2 in a case 1 formed long in the conveying direction from the supply unit 2 at the rear side in the conveying direction to at least one discharge unit 6 provided in front of the supply unit 2. The conveying conveyor 7 is configured by looping an endless chain 13 having conveyors 12 attached at predetermined intervals around a driven gear 8 and a driving gear 10. The case 1 has Upright side plates 20 are respectively provided, and the pair of side plates 20 lower upright plates 16 standing upright on both the left and right sides of the bottom plate 15 of the case 1, and at the upper ends of each lower upright plate 16 provided inclined plate portions 17 located outside as going upward, and at the upper ends of each inclined plate portion 17 provided substantially vertical upper upright plates 18 haveThe carrier 12 is formed of a vertical plate member made of synthetic resin in a side view. In a front view, the lower part of the carrier 12 forms a rectangular lower conveying part 25, the upper part of the lower conveying part 25 forms an intermediate conveying part 26 with a shorter lower side and a longer upper side, an upper conveying part 27 with a rectangular shape is formed above the intermediate conveying part 26, both side links 30 of the endless chain 13 are positioned at the left and right central parts of the upper conveying part 27, the intermediate conveying part 26, and the lower conveying part 25 of the carrier 12, and the left and right side edges of each carrier 12 are configured to move while being supported by a support mechanism X with a gap S with respect to the inner surface of the case 1. The support mechanism X forms an inclined plate part 17 that inclines outward with respect to the lower standing plate 16 on the case 1 side, and provides a contact support part 40 that contacts and moves on a part of the inclined plate part 17 on the carrier 12 side. Only the contact support part 40 of the carrier 12 is brought into contact with the inner surface of the case 1, and there is a gap S between the lower end, the left and right side surfaces of the lower conveying part 25 of the carrier 12, the both side surfaces of the intermediate conveying part 26, the both side surfaces of the upper conveying part 27, the bottom plate 15 and the left and right side plates 20 of the case 1 and it is configured to move. Among the gaps S, at least The hypotenuse part 41 of the intermediate conveying part 26 of the carrier 12 and the inclined plate part 17 of the case 1 between The gap S is formed as a lateral feed conveying device having a size larger than that of rice grains by a notch part 42 formed by notching the hypotenuse part 41. The invention according to claim 2 is a lateral feed conveying device in which the left and right contact support parts 40 are formed at the same height position in a front view. The invention according to claim 3 is a lateral feed conveying device in which the relationship between the contact support part 40 and the notch part 42 is such that the length of the notch part 42 is formed longer than the length of the contact support part 40. The invention according to claim 4 is a lateral feed conveying device in which the contact support part 40 is formed leaving the part of the hypotenuse part 41 continuously formed at the lower end of the side edge of the upper conveying part 27, and the hypotenuse part 41 below the contact support part 40 is notched to form the notch part 42. The invention according to claim 5 is a lateral feed conveying device in which the lower end, the upper end, and the left and right side ends of the carrier 12, and the upper surfaces of both side links 30 of the endless chain 13 are formed into a triangular cross-section that inclines gradually lower with the apex of the triangular cross-section in between, and are formed at the edge part 45. In the invention according to claim 6, a floating prevention body 50 for preventing the endless chain 13 from rising due to conveying resistance is provided in the case 1. The floating prevention body 50 is formed of a vertical plate member made of stainless steel, and mounting members 52 formed of shaft rod bodies in the left - right direction are provided in a fixed state front - and - rear. The floating prevention body 50 is arranged at a predetermined interval above the roller 31 of the endless chain 13, and a horizontal feed conveying device formed on an arc - shaped arc surface 53 is provided at the lower end edge of the floating prevention body 50.

Effect of the Invention

[0006] In the invention according to claim 1, since the left - and - right side edges of each conveying body 12 are supported by the support mechanism X with a gap S with respect to the inner surface of the case 1 and are configured to move, the contact resistance during the movement of the conveying body 12 is reduced, and discoloration and vibration generation of the conveyed object are suppressed. The support mechanism X forms an inclined plate portion 17 that inclines outward with respect to the lower upright plate 16 on the case 1 side, and provides a contact support portion 40 that contacts and moves on a part of the inclined plate portion 17 on the carrier 12 side. Only the contact support portion 40 of the carrier 12 is brought into contact with the inner surface of the case 1, and there is a gap S between the lower end and the left and right side surfaces of the lower transport portion 25 of the carrier 12, both side surfaces of the intermediate transport portion 26, both side surfaces of the upper transport portion 27, the bottom plate 15 of the case 1, and the left and right inclined plate portions 17. Since it is configured to move, only the contact support portion 40 of the carrier 12 is in sliding contact with the inner surface of the inclined plate portion 17 of the case 1, and there is a gap S between the lower end portion and the left and right side surfaces of the lower transport portion 25 of the carrier 12, both side surfaces of the intermediate transport portion 26, both side surfaces of the upper transport portion 27, the bottom plate 15 of the case 1, and the left and right side plates 20. The contact resistance with the inner surface of the case 1 during the movement of the carrier 12 is reduced, and discoloration and vibration generation of the conveyed object are suppressed. In particular, only the contact support portion 40 contacts between both side surfaces of the intermediate transport portion 26 of the carrier 12 and the inclined plate portion 17 of the case 1, and there is a gap S. Therefore, the contact resistance during the movement of the carrier 12 is reduced, and discoloration and vibration generation of the conveyed object are suppressed. The load of the carrier 12 is supported only by the contact support portion 40, and a gap S is formed between the outer peripheral edge of the carrier 12 and the inner surface of the case 1. Therefore, the contact resistance with the inner surface of the case 1 during the movement of the carrier 12 is reduced, and discoloration and vibration generation of the conveyed object are suppressed. The hypotenuse portion 41 of the intermediate transport portion 26 of the carrier 12 is notched to form a notch portion 42. The notch portion 42 forms a gap S between the hypotenuse portion 41 and the inclined plate portion 17 of the case 1, and a contact support portion 40 that protrudes toward the inclined plate portion 17 side is formed on the hypotenuse portion 41. Therefore, the left and right contact support portions 40 contact the inclined plate portion 17 of the case 1 and move the carrier 12 in a state of supporting the load of the carrier 12. Claim 2 In the invention of, since the left - and - right contact support portions 40 are formed at the same height position in a front view, the center - of - gravity position of the conveying body 12 in the left - right direction is set as the left - right center position, the straight - running stability of the conveying body 12 is improved, the contact with the inner surface of the side plate 20 of the case 1 is suppressed, and discoloration, vibration, and noise generation of the rice grains are suppressed. Claim 3 In the invention of, since the relationship between the contact support portion 40 and the notch portion 42 is such that the length of the notch portion 42 is formed longer than the length of the contact support portion 40, the contact resistance during the movement of the conveying body 12 is reduced, and discoloration and vibration generation are suppressed. Claim 4 In the invention of, the contact support portion 40 is formed by leaving a portion of the hypotenuse portion 41 continuously formed at the lower end of the side edge of the upper conveying portion 27, and the hypotenuse portion 41 below the contact support portion 40 is cut out to form the contact support portion 40. Therefore, the mounting strength (support strength) of the contact support portion 40 is improved, and further, discoloration and abnormal noise generation are prevented. Claim 5In this invention, the lower and upper ends and left and right side ends of the conveying body 12 and the upper surfaces of both side links 30 of the endless chain 13 are each formed with a triangular cross section at the edge 45, with the cross section gradually sloping downward from the apex of the triangle, so that grains can be prevented from landing on the upper surface of the upper conveying section 27 of the conveying body 12 and the upper surfaces of both side links 30 of the endless chain 13 and becoming residue. Claim 6 In this invention, a floating prevention body 50 is provided inside the case 1 to prevent the endless chain 13 from floating up due to transport resistance, the floating prevention body 50 is formed from a vertical plate member of stainless steel, and mounting members 52 formed from left and right axial rods are fixedly provided at the front and back, the floating prevention body 50 is positioned above the rollers 31 of the endless chain 13 at a predetermined distance, and the lower edge of the floating prevention body 50 is formed into an arc-shaped arc surface 53, so that when the rollers 31 of the endless chain 13 float up, they come into contact with the lower end of the floating prevention body 50 and prevent the endless chain 13 from floating up. In this case, the lower edge of the anti-floating body 50 is formed with an arc-shaped surface 53, which reduces the contact resistance between the anti-floating body 50 and the rollers 31 of the endless chain 13 and the impact at the time of contact, thereby preventing damage to the endless chain 13. A chain support roller 54 is provided to support the endless return chain 13 which moves above the floating prevention body 50 in the return direction of the conveying direction, so that the endless chain 13 is prevented from hanging down together with the conveying body 12 above the floating prevention body 50 and coming into contact with the floating prevention body 50. [Brief explanation of the drawings]

[0007]

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[0008] An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a case for a transverse feed conveying device, which is elongated in the conveying direction. One end of the case 1 is provided with a supply section 2, and the other end is provided with a discharge section 6 having a drop opening 5. In this case, one or more supply sections 2 may be provided in the middle section, and similarly, one or more discharge sections 6 may be provided in the middle section in addition to the discharge section 6 on the other end side, and the middle discharge section 6 is provided with a shutter (not shown) for opening and closing the drop outlet 5. A transport conveyor 7 is provided inside the case 1 between a supply port (not shown) of the supply unit 2 and a discharge unit 6 at the other end. To facilitate understanding of the present invention, the conveying direction of the conveying conveyor 7 is defined as the front-to-back direction, and the configuration will be described by indicating directions such as front-to-back, left-to-right, up-to-down, etc. based on this conveying direction, but the configuration of the present invention is not limited to this.

[0009] A driven gear 8 is mounted on a driven shaft 9 inside the case 1 on the starting end side, and a drive gear 10 is mounted on a drive shaft 11 inside the case 1 on the terminal end side, and an endless chain 13 with multiple conveying bodies 12 arranged at predetermined intervals is looped between the driven gear 8 and the drive gear 10. In Case 1, a bottom plate 15 is provided, and lower upright plates 16 that stand substantially vertically on the left and right sides of the bottom plate 15 are provided. An inclined plate portion 17 that is located outward as it goes upward is provided at the upper end of the lower upright plate 16. The lower end of an upper upright plate 18 that is substantially vertical is connected to the upper end of the inclined plate portion 17, and the side plates 20 of the case 1 are formed by these components. In this case, the inclined plate portion 17 is formed with a steep inclination greater than or equal to the so-called angle of repose to prevent the conveyed object from staying. On the other hand, the conveyor 12 is formed by a vertical plate member made of synthetic resin in a side view. The lower part of the conveyor 12 forms a rectangular lower conveying portion 25, the part above the lower conveying portion 25 forms an inverted trapezoidal intermediate conveying portion 26 with a shorter lower side and a longer upper side, and a rectangular upper conveying portion 27 is formed above the intermediate conveying portion 26.

[0010] Further, the conveyor 12 forms a space portion K at the left and right central portions of the upper conveying portion 27, the intermediate conveying portion 26, and the lower conveying portion 25, where a connecting portion 28 to be attached to both side links 30 of an endless chain 13 described later is located. A pair of left and right connecting portions 28 that protrude in the front-rear direction are provided in the space portion K, and the connecting portion 28 and both side links 30 of the endless chain 13 are connected by a locking shaft member 31 described later (FIGS. 10 and 11). For easy understanding, the conveyor 12 and the endless chain 13 are described separately, but the upper conveying portion 27, the intermediate conveying portion 26, the lower conveying portion 25, and the connecting portion 28 of the conveyor 12 are integrally formed on the left and right side surfaces of both side links 30 of the endless chain 13. The endless chain 13 for attaching the conveyor 12 is formed in an endless shape by detachably connecting both side links 30 in the front-rear direction made of synthetic resin with a locking shaft member 31, and the conveyor 12 is integrally formed so as to protrude in the intersecting direction with respect to the traveling direction on the left and right sides of a predetermined one of both side links 30.

[0011] In this case, the conveyor 12 connects the lower parts of the lower conveying portions 25 of the left and right conveyors 12 with a connecting body 32 below the connecting portion 28, and positions the lower part of the lower conveying portion 25 below the lower ends of both side links 30 so as not to contact the bottom plate 15. The left and right connecting parts 28 and the both-side links 30 are positioned sandwiching a roller 33 through which a locking shaft member 31 is inserted, and the end part of the locking shaft member 31 is detachably attached by a fastener 34 such as a split pin. 35 is a washer. Also, since each connecting part 28 and the both-side links 30 are connected by the locking shaft member 31 to form an endless shape, when the fastener 34 is removed without using a special dedicated tool, any of the both-side links 30 at any part among the numerous both-side links 30 can be detached or attached. Therefore, it is suitable as it facilitates the maintenance work of the endless chain 13 and also facilitates the adjustment of the set length with respect to the case 1 of the endless chain 13.

[0012] In the conventional cross-feed conveying device, although the number of occurrences was small, when the conveyed object was rice grains, the surface sometimes turned black and discolored as shown in FIG. 14. As a result of investigating and researching this, it is well known that when cooking lotus root of vegetables in an iron pot, the lotus root turns black and discolors, and it has been found that a chemical reaction occurs between the polyphenol (tannin) of the lotus root and the iron content of the iron pot, resulting in discoloration. It is considered that the contact between the components of the rice grains and the stainless steel case 1 is one factor. On the other hand, the situation where the rice grains in the storage tank made of stainless steel containing iron content discolor has not occurred. Therefore, since the rice grains usually do not discolor even when simply in contact with stainless steel, the exact reason for the discoloration of the rice grains in the cross-feed conveying device is unknown. However, when the contact resistance between the conveying body 12 and the inner surface of the case 1 was reduced, it was found that the occurrence of the discoloration phenomenon of the rice grains did not occur.

[0013] Therefore, in the present invention, a transport conveyor 7 is provided in a case 1 formed long in the transport direction from a supply section 2 on the rear side in the transport direction to at least a discharge section 6 provided in front of the supply section 2, for transporting the transported objects supplied from the supply section 2, the transport conveyor 7 being configured by wrapping an endless chain 13 to which transport bodies 12 are attached at predetermined intervals around a driven gear 8 and a drive gear 10, lower upright plates 16 are provided standing on the left and right sides of a bottom plate 15 of the case 1, inclined plate sections 17 are provided at the upper ends of the lower upright plates 16 and positioned outward as they reach the top, and the lower end of a substantially vertical upper upright plate 18 is connected to the upper end of the inclined plate section 17, thereby configuring the case 1, On the other hand, when viewed from the side, the conveying body 12 is formed from a vertical plate member made of synthetic resin, and when viewed from the front, the lower part of the conveying body 12 forms a rectangular lower conveying section 25, and above the lower conveying section 25 is formed an intermediate conveying section 26 which is shaped like an inverted trapezoid with a short bottom side and a long top side, and above the intermediate conveying section 26 is formed a rectangular upper conveying section 27, and the connecting section 28 and both side links 30 of the endless chain 13 are positioned in the left and right central parts of the upper conveying section 27, intermediate conveying section 26 and lower conveying section 25 of the conveying body 12, and the left and right side edges of each conveying body 12 are configured to move while being supported by a support mechanism X with a gap S between them and the inner surface of the case 1.

[0014] This reduces contact resistance when the transport body 12 moves the transported object, and suppresses discoloration of the transported object and the generation of vibration. That is, each conveying body 12 is configured to move while being supported by a support mechanism X with a gap S between it and the inner surface of the case 1 . Therefore, the gap S between the lower edge of the lower conveying section 25 of the conveying body 12 and the bottom plate 15 is set to 2 mm, but the gap S between the lower edge of the lower conveying section 25 of a specific conveying body 12 among the multiple conveying bodies 12 and the bottom plate 15 is always set to a gap smaller than the size of the grains (0.1 to 1 mm), so that not only grains but also powdery residues can be removed and discharged without the need for a so-called scraper. The support mechanism X forms an inclined plate portion 17 that inclines outward with respect to the lower upright plate 16 on the case 1 side, and provides a contact support portion 40 that contacts and moves on a part of the inclined plate portion 17 on the carrier 12 side. Only the contact support portion 40 of the carrier 12 is brought into contact with the inner surface of the case 1, and there is a gap S between the lower end and the left and right side surfaces of the lower transport portion 25 of the carrier 12, both side surfaces of the intermediate transport portion 26, both side surfaces of the upper transport portion 27, the bottom plate 15 of the case 1, the left and right lower upright plates 16, the inclined plate portion 17, and the upper upright plate 18. The configuration is such that it moves, and only the contact support portion 40 is configured to slide and move on the inner surface of the case 1.

[0015] That is, the load of the carrier 12 is supported only by the contact support portion 40, and a gap S is formed between the outer peripheral edge of the carrier 12 and the inner surface of the case 1. The configuration of the contact support portion 40 is arbitrary. As an example, a notch portion 42 is formed by notching a predetermined portion of the hypotenuse portion 41 of the intermediate transport portion 26 of the carrier 12. A gap S is formed between the hypotenuse portion 41 and the inclined plate portion 17 of the case 1 by the notch portion 42, and a contact support portion 40 protruding toward the inclined plate portion 17 side is formed on the hypotenuse portion 41. That is, for ease of understanding, in FIGS. 7 and 8, the portion that would have been the hypotenuse portion 41 is shown as a virtual original hypotenuse portion 41A by a virtual line, and the notch portion 42 is defined as the space between the hypotenuse portion 41 and the original hypotenuse portion 41A. Therefore, the left and right contact support portions 40 move the carrier 12 in a state where they are in contact with the inclined plate portion 17 of the case 1 and support the load of the carrier 12. The contact support portions 40 provided on the left and right hypotenuse portions 41 are formed at substantially the same height position in a front view.

[0016] Therefore, the center-of-gravity position of the carrier 12 in the left-right direction is set to the left-right center position, improving the straight-ahead stability of the carrier 12, suppressing contact with the inner surface of the side plate 20 of the case 1, and suppressing discoloration of the rice grains, vibration, and generation of noise. The relationship among the contact support portion 40, the hypotenuse portion 41, and the notch portion 42 is such that the left and right inclined portions of the intermediate transport portion 26 are the hypotenuse portions 41. In FIG. 5, the notch portion 42 is formed while leaving the contact support portion 40 so that a part of the hypotenuse portion 41 becomes the contact support portion 40, and the notch portion 42 and the hypotenuse portion 41 coincide. Also, the relationship between the contact support portion 40 and the notch portion 42 is formed such that the length of the notch portion 42 is longer than the length of the contact support portion 40. Therefore, the contact resistance during the movement of the carrier 12 is reduced, and discoloration and vibration generation are suppressed. In this case, the carrier 12 is made of synthetic resin and is light. When the contact support portion 40 and the notch portion 42 are formed at a length ratio of 1:3, the contact support portion 40 can sufficiently support the moving load of the carrier 12 and sufficiently reduce the contact resistance to prevent discoloration and abnormal noise generation, which is preferable. In the carrier 12 of FIG. 7, the contact support portion 40 is provided at the upper and lower middle position of the hypotenuse portion 41 in a front view.

[0017] FIG. 8 shows another embodiment of the contact support portion 40. The contact support portion 40 is formed by leaving the upper portion of the hypotenuse portion 41 continuously formed at the lower ends of both side surfaces of the upper transport portion 27, and the hypotenuse portion 41 below the contact support portion 40 is cut out to form the notch portion 42. Therefore, the mounting strength (support strength) of the contact support portion 40 is improved, and further, discoloration and abnormal noise generation are prevented. The lower end, upper end, left and right side ends of the carrier 12 and the connecting portion 28, and the upper surfaces of both side links 30 of the endless chain 13 are formed into a triangular cross-section that slopes gradually lower with the apex of the triangular cross-section sandwiched, at the edge portion 45. Therefore, it is possible to prevent grains from being placed on the upper surfaces of both side links 30 of the carrier 12 and the endless chain 13 and becoming residues, and also to reduce the contact area between the carrier 12 and the inner surface of the case 1, suppressing discoloration, vibration, and noise generation of the conveyed material. Also, since the edge portion 45 is formed at the lower end of the lower transport portion 25 of the carrier 12, the carrier 12 is configured to be movable in both forward and reverse (front and back) directions, improving versatility (for example, a supply portion 2 is provided in the center, discharge portions 6 are provided at both ends, or the supply portion 2 and the discharge portions 6 are alternately arranged to convey between each supply portion 2 and discharge portion 6).

[0018] The gap S between the lower edge of the lower conveying part 25 of the normal carrier 12 and the bottom plate 15 is set to 2 mm to prevent the crushing phenomenon of the conveyed material. However, the gap S between the lower edge of the lower conveying part 25 of a specific carrier 12 among the plurality of carriers 12 and the bottom plate 15 is always set to a gap (0.1 - 1 mm) smaller than the grains. Without providing a so-called scraper, it is configured to remove and discharge not only grains but also powdery residues. Similarly, the gap S formed between the hypotenuse part 41 of the carrier 12 and the inclined plate part 17 of the case 1 is always set to a gap (0.1 - 1 mm) smaller than the grains, and it is configured to be able to remove and discharge not only grains but also powdery residues.

[0019] The depth of the lower upright plate 16 and the width of the bottom plate 15 are arbitrary. The inclination angles of the inclined plate part 17 and the hypotenuse part 41 may be set so that the carrier 12 moves to the center according to the depth of the lower upright plate 16 and the width of the bottom plate 15. In the case 1, a floating prevention body 50 is provided to prevent the endless chain 13 from floating due to conveying resistance. The floating prevention body 50 is formed by a vertical plate member of stainless steel, and mounting members 52 formed by shaft rod bodies in the left - right direction are fixedly provided front - and - rear, and are attached to the side plate 20 of the case 1. The floating prevention body 50 is arranged at a predetermined interval above the roller 31 of the endless chain 13. When the roller 31 of the endless chain 13 floats, it abuts against the lower end of the floating prevention body 50, and the floating is prevented.

[0020] In this case, an arc - shaped arc surface 53 is formed on the lower end edge of the floating prevention body 50. Therefore, the contact resistance and the impact during contact between the floating prevention body 50 and the roller 31 of the endless chain 13 are alleviated, and the breakage of the endless chain 13 is prevented. A plurality of floating prevention bodies 50 are arranged in the case 1 at a predetermined interval. In the case 1 above the floating prevention body 50, a chain support roller 54 for supporting the return endless chain 13 that moves in the ridged direction of the conveying direction above the floating prevention body 50 is provided. Therefore, above the floating prevention body 50, it is prevented that the endless chain 13 hangs down and contacts the floating prevention body 50 together with the carrier 12.

[0021] (Operation of the embodiment) The present invention has the above-described configuration. When a motor (not shown) is energized, the drive gear 10 rotates, which in turn rotates the endless chain 13 to move the conveyor 12 from the supply section 2 to the discharge section 6. The case 1 has a bottom plate 15 and substantially vertical lower upright plates 16 on the left and right sides of the bottom plate 15, and each conveying body 12 is configured to move while being directly guided and supported by the support mechanism X, so that each conveying body 12 moves through the center of the case 1 without swaying sideways or running to one side thanks to the support mechanism X.

[0022] In conventional horizontal conveying devices, when the object being conveyed is rice grains, the surface may turn black. However, since the rice grains in the stainless steel storage tank have not turned black, it was determined that the main cause of this problem in the case of horizontal conveying devices is the resistance to conveyance by the conveying body 12. It was found that by reducing the contact resistance between the case 1 and the conveying body 12, the discoloration of the rice grains could be prevented. Therefore, in the present invention, each conveying body 12 is configured to move while being supported by a support mechanism X with a gap S between it and the inner surface of the case 1, thereby reducing contact resistance when the conveying body 12 moves and suppressing discoloration of the conveyed object and the generation of vibration.

[0023] The support mechanism X has an inclined plate portion 17 on the case 1 side, and a contact support portion 40 on the conveying body 12 side that comes into contact with and moves on a part of the inclined plate portion 17, with only the contact support portion 40 of the conveying body 12 abutting against the inner surface of the case 1, and the conveying body 12 moves with a gap S between the lower end and left and right side surfaces of the lower conveying portion 25 of the conveying body 12, both side surfaces of the intermediate conveying portion 26 and both side surfaces of the upper conveying portion 27, and the bottom plate 15 and left and right side plates 20 of the case 1.As a result, only the contact support portion 40 of the conveying body 12 comes into sliding contact with the inner surface of the case 1, and the conveying body 12 moves with a gap S between the lower end and left and right side surfaces of the lower conveying portion 25 of the conveying body 12, both side surfaces of the intermediate conveying portion 26 and both side surfaces of the upper conveying portion 27, and the bottom plate 15 and left and right side plates 20 of the case 1, which reduces the contact resistance with the inner surface of the case 1 when the conveying body 12 moves and suppresses discoloration and vibration of the conveyed object.

[0024] The load of the carrier 12 is supported only by the contact support portion 40 of the support mechanism X, and a gap S is formed between the outer peripheral edge of the carrier 12 and the inner surface of the case 1. Therefore, the contact resistance with the inner surface of the case 1 during the movement of the carrier 12 is reduced, and discoloration and vibration generation of the conveyed material are suppressed. The configuration of the contact support portion 40 is arbitrary. However, the hypotenuse portion 41 of the intermediate conveyance portion 26 of the carrier 12 is notched to form a notch portion 42. The notch portion 42 forms a gap S between the hypotenuse portion 41 and the inclined plate portion 17 of the case 1, and a contact support portion 40 protruding toward the inclined plate portion 17 side is formed on the hypotenuse portion 41. Therefore, the left and right contact support portions 40 abut on the inclined plate portion 17 of the case 1 and move the carrier 12 in a state of supporting the load of the carrier 12. In this case, if the gap S formed by the notch portion 42 is set to a size of 3 millimeters, which is larger than rice grains, the contact resistance is further reduced, and discoloration and vibration generation of the conveyed material are suppressed. That is, even if there is a gap S between the hypotenuse portion 41 of the intermediate conveyance portion 26 and the inclined plate portion 17, it does not significantly affect the conveyance ability by the carrier 12. Rather, it is effective in reducing the contact resistance and suppressing discoloration and vibration generation of the conveyed material. Further, since the conveyed material does not stay on the inclined plate portion 17 and flows down onto the bottom plate 15, even if there is a gap S between the hypotenuse portion 41 of the intermediate conveyance portion 26 and the inclined plate portion 17, no residue problem occurs.

[0025] Since the left and right contact support portions 40 are formed at the same height position in a front view, the center of gravity position of the carrier 12 in the left-right direction is set to the left-right center position, improving the straight-ahead stability of the carrier 12 and suppressing contact with the inner surface of the side plate 20 of the case 1, thereby suppressing discoloration, vibration, and noise generation of the rice grains. Regarding the relationship between the contact support portion 40 and the notch portion 42, since the length of the notch portion 42 is formed longer than the length of the contact support portion 40, the contact resistance during the movement of the carrier 12 is reduced, and discoloration and vibration generation are suppressed. In this case, the carrier 12 is made of synthetic resin and is lightweight. The contact support portion 40 and the notch portion 42 are formed at a length ratio of 1:3. Therefore, the contact support portion 40 can sufficiently support the moving weight of 15 and sufficiently reduce the contact resistance to prevent discoloration and abnormal noise generation.

[0026] In the carriers 12 of FIGS. 4 and 7, since the contact support portion 40 is provided at the upper and lower intermediate positions of the hypotenuse portion 41 in a front view, the contact support portion 40 abuts against and supports the upper and lower intermediate positions of the carrier 12 on the inclined plate portion 17. The contact support portion 40 can sufficiently support the moving weight of 15 and sufficiently reduce the contact resistance to prevent discoloration and abnormal noise generation. FIGS. 5 and 8 show another embodiment of the contact support portion 40. The contact support portion 40 is formed by leaving a portion of the hypotenuse portion 41 continuously formed at the lower end of the side edge of the upper transport portion 27, and cutting out the hypotenuse portion 41 below the contact support portion 40. Therefore, the mounting strength (support strength) of the contact support portion 40 is improved, and further, discoloration and abnormal noise generation can be prevented.

[0027] The lower end, upper end, left and right side ends of the carrier 12 and the upper surfaces of both side links 30 of the endless chain 13 are formed into a triangular cross-section that is inclined so as to gradually become lower across the apex of the triangular cross-section at the edge portion 45. Therefore, it is possible to prevent the grains from being placed on the upper surface of the upper transport portion 27 of the carrier 12 and the upper surfaces of both side links 30 of the endless chain 13 and becoming residues. Further, since the edge portion 45 is formed on the side edge of the upper transport portion 27, the hypotenuse portion 41 of the intermediate transport portion 26, and the side edge of the lower transport portion 25 of the carrier 12, the contact area with the inner surface of the case 1 is reduced, and discoloration, vibration, and noise generation of the conveyed object are suppressed.

[0028] Further, since the edge portion 45 is formed at the lower end of the lower transport portion 25 of the carrier 12, the carrier 12 is configured to be movable in both forward and reverse (front and back) directions, and the versatility can be improved (for example, a supply portion 2 is provided in the center, discharge portions 6 are provided at both ends, or the supply portion 2 and the discharge portion 6 are alternately arranged to convey between each supply portion 2 and the discharge portion 6). The gap S between the lower edge of the lower conveying part 25 of the normal carrier 12 and the bottom plate 15 is set to 2 mm to prevent the crushing phenomenon of the conveyed material. However, the gap S between the lower edge of the lower conveying part 25 of a specific carrier 12 among the plurality of carriers 12 and the bottom plate 15 is always set to a gap smaller than the grain (0.1 - 1 mm). Therefore, not only grains but also powdery and granular residues can be removed and discharged without providing a so-called scraper.

[0029] The depth of the lower upright plate 16 and the width of the bottom plate 15 are arbitrary. Since the inclination angles of the inclined plate part 17 and the hypotenuse part 41 can be set according to the depth of the lower upright plate 16 and the width of the bottom plate 15 so that the carrier 12 moves to the center, the versatility of the cross-feed conveying device can be improved. In the case 1, a floating prevention body 50 for preventing the endless chain 13 from rising due to conveying resistance is provided. The floating prevention body 50 is formed by a stainless steel vertical plate member, and mounting members 52 formed by shaft rod bodies in the left - right direction are fixedly provided front and back. Since the floating prevention body 50 is arranged at a predetermined interval above the roller 31 of the endless chain 13, when the roller 31 of the endless chain 13 rises, it abuts against the lower end of the floating prevention body 50, preventing the floating of the endless chain 13.

[0030] In this case, since the lower edge of the floating prevention body 50 is formed into an arc-shaped arc surface 53, the contact resistance and the impact during contact between the floating prevention body 50 and the roller 31 of the endless chain 13 are alleviated, preventing the damage of the endless chain 13. A plurality of floating prevention bodies 50 are arranged in the case 1 at a predetermined interval. In the case 1 above the floating prevention body 50, a chain support roller 54 for supporting the return endless chain 13 that moves in the ridging direction of the conveying direction above the floating prevention body 50 is provided. Therefore, above the floating prevention body 50, the endless chain 13 is prevented from sagging and contacting the floating prevention body 50 together with the carrier 12.

Explanation of symbols

[0031] 1... case, 2... supply unit, 3... inlet, 4... supply port, 5... discharge port, 6... discharge unit, 7... conveyor, 8... driven gear, 9... driven shaft, 10... drive gear, 11... drive shaft, 12... conveyor body, 13... chain, 15... bottom plate, 16... lower upright plate, 17... inclined plate portion, 18... upper upright plate, 20... side plate, 25... lower conveyance portion, 26... intermediate conveyance portion, 27... upper conveyance portion, 28... connecting portion, 30... both-side links, 31... locking shaft member, 32... connecting body, 33... roller, 34... fastener, 40... contact support portion, 41... hypotenuse portion, 42... notch portion, 45... edge portion, 50... anti-lifting body, S... gap.

Claims

1. In a case 1 formed long in the conveying direction from a supply unit 2 on the rear side in the conveying direction to at least one discharge unit 6 on the front side of the supply unit 2, a conveying conveyor 7 for conveying the conveyed object supplied from the supply unit 2 is provided. The conveying conveyor 7 is configured by looping an endless chain 13 having carriers 12 attached at predetermined intervals around a driven gear 8 and a driving gear 10. The case 1 is provided with side plates 20 standing up on both the left and right sides of the bottom plate 15 of the case 1. The pair of side plates 20 are composed of lower standing plates 16 standing up on both the left and right sides of the bottom plate 15, inclined plate portions 17 provided at the upper ends of the respective lower standing plates 16 and located outside as they extend upward, and substantially vertical upper standing plates 18 provided at the upper ends of the respective inclined plate portions 17. The carrier 12 is formed of a vertical plate member made of synthetic resin in a side view. In a front view, the lower part of the carrier 12 forms a rectangular lower conveying portion 25, the upper part of the lower conveying portion 25 forms an intermediate conveying portion 26 with a shorter lower side and a longer upper side, and a rectangular upper conveying portion 27 is formed above the intermediate conveying portion 26. Both side links 30 of the endless chain 13 are positioned at the left and right central portions of the upper conveying portion 27, the intermediate conveying portion 26, and the lower conveying portion 25 of the carrier 12. The left and right side edges of each carrier 12 are configured to move in a state of being supported by a support mechanism X with a gap S with respect to the inner surface of the case 1. The support mechanism X forms an inclined plate portion 17 inclined outward with respect to the lower standing plate 16 on the case 1 side, and provides a contact support portion 40 that contacts and moves on a part of the inclined plate portion 17 on the carrier 12 side. Only the contact support portion 40 of the carrier 12 is brought into contact with the inner surface of the case 1, and there is a gap S between the lower end and the left and right side surfaces of the lower conveying portion 25 of the carrier 12, both side surfaces of the intermediate conveying portion 26, both side surfaces of the upper conveying portion 27, the bottom plate 15 of the case 1, and the left and right side plates 20 for movement. Among the gaps S, at least the gap S between the hypotenuse portion 41 of the intermediate conveying portion 26 of the carrier 12 and the inclined plate portion 17 of the case 1 is formed to have a size larger than rice grains by a notch portion 42 formed by notching the hypotenuse portion 41. A cross-feed conveying device.

2. The cross-feed conveying device according to claim 1, wherein the left and right contact support portions 40 are formed at the same height position in a front view.

3. The cross-feed conveying device according to claim 1, wherein the relationship between the contact support portion 40 and the notch portion 42 is such that the length of the notch portion 42 is formed longer than the length of the contact support portion 40.

4. In claim 1, a transverse feed conveyor is provided, in which a contact support portion 40 is formed while leaving a portion of a bevel portion 41 continuously formed at the lower end of a side edge of the upper conveyor portion 27, and the bevel portion 41 below the contact support portion 40 is cut out to form a notch portion 42.

5. In claim 1, the lower end, upper end, left and right side ends of the conveyor body 12, and the upper surfaces of both side links 30 of the endless chain 13 are formed into a triangular cross-section that is inclined so as to gradually become lower across the apex of the triangular cross-section, and are formed at an edge portion 45.

6. In claims 1 to 5, a floating prevention body 50 for preventing the endless chain 13 from floating due to conveyance resistance is provided in the case 1. The floating prevention body 50 is formed of a stainless steel vertical plate member, and attachment members 52 formed of shaft rod bodies in the left-right direction are provided in a fixed state in the front-rear direction. The floating prevention body 50 is disposed at a predetermined interval above the roller 31 of the endless chain 13, and an arc surface 53 having an arc shape is formed at the lower edge of the floating prevention body 50.

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