WO2012008347A1 - Conveyor belt - Google Patents

Abstract

Disclosed is a conveyor belt (1) provided with: a link (21) which engages with a first rod (11) in a rotatable manner and in a moveable manner along the movement direction (left direction in the figure) and which is secured by both ends of a second rod (12) neighboring the rear side (right side of the figure) of the first rod (11); and a wire (31) which bridges between the first rod (11) and the second rod (12) in a spiral manner. An excess weld metal (17a) is formed, by welding, on the front side (left side of the figure) between the inner surface of the link (21) (the surface on the top side of the figure) and the second rod (12). The edge (65) on both ends of the wire (31) is formed so as to be positioned on the rear side. Therefore, the edge (65) of the wire (31) will not come into contact with the excess weld metal (17a) when the conveyor belt (1) rotates and moves. Thus, the excess weld metal (17a) will not become damaged and the reliability of the conveyor belt (1) improves.

Description

Conveyor belt

The present invention relates to a conveyor belt, and more particularly to a conveyor belt whose support surface is mainly constituted by a wire spirally wound around an adjacent rod.

A conveyor belt whose support surface is mainly composed of spirally formed wires is used in, for example, refrigerators for freezing foods and the like.

FIG. 14 is a schematic perspective view in a partially broken state showing a refrigerator equipped with a conventional conveyor belt.

Referring to the figure, a refrigerator 70 includes a rectangular parallelepiped heat insulator 71 in which a carry-in port 86 and a carry-out port 87 are formed, and a cylindrical drum 73 installed in the heat insulator 71 and attached to a main shaft 72. And a conveyor belt 80 spirally arranged around the drum 73 via a rail 74, and a cooler 75 for keeping the temperature in the heat insulator 71 at a predetermined low temperature.

A plurality of rectangular pipe-shaped resin pipes 76 are arranged at equal intervals on the outer periphery of the drum 73. Further, the conveyor belt 80 is spirally arranged with its inner edge in contact with each of the resin pipes 76 constituting the drum 73, and is formed as a so-called endless belt by the auxiliary drive sprocket 78 and a plurality of pulleys 79. Is formed.

Then, the driving sprocket 77 attached to the lower end of the main shaft 72 is rotated by driving a driving device (not shown) connected to the driving sprocket 77. Then, the drum 73 rotates counterclockwise in a plan view, and the conveyor belt 80 moves as indicated by arrows in the figure due to friction between each of the resin pipes 76 and the inner edge of the conveyor belt 80. Note that the auxiliary drive sprocket 78 moves the conveyor belt 80 in an auxiliary manner, and adjusts the moving speed of the conveyor belt 80. Therefore, basically, the conveyor belt 80 rotates only by the frictional force with the resin pipe 76 of the drum 73. Accordingly, since the drum 73 rotates to pull the conveyor belt 80 in advance, the rotation of the conveyor belt 80 in the spiral portion is slightly delayed from the rotation of the drum 73.

In such a refrigerator 70, since the conveyor belt 80 is installed in a spiral shape, the long conveyor belt 80 can be installed in a limited space in the heat insulator 71. Therefore, the space in the heat insulator 71 can be used effectively.

Next, the structure of the conveyor belt 80 will be described.

FIG. 15 is a partial plan view of the conveyor belt shown in FIG.

Referring to the figure, a conveyor belt 80 includes a plurality of rods 10 arranged in a direction crossing the traveling direction (upward direction in the figure), and a plurality of pairs of links attached to both ends of each rod 10. 20a and 20b, and a wire 60 formed so as to span between the rods 10 in a spiral shape. The resin pipe 76 of the drum 73 is attached along the outer edge of the square prism-shaped metal square member 89.

Next, the detailed structure of the conveyor belt 80 will be described.

16 is a detailed plan view of the conveyor belt shown in FIG. 15, FIG. 17 is a view taken along line XVII-XVII shown in FIG. 16, and FIG. 18 is a cross-sectional view taken along line XVIII-XVIII shown in FIG. FIG.

Referring to these drawings, the second rod 11 on the rear side (right side in FIG. 16) in the traveling direction (left direction in FIG. 16) with respect to the first rod 11 which is one of the plurality of rods shown in FIG. The rod 12 is disposed adjacent to the rod 12. Further, a front rod 13 is disposed adjacent to the front side in the traveling direction (left side in FIG. 16). In addition, each of the 1st rod 11, the 2nd rod 12, and the front rod 13 is arrange | positioned at equal intervals in the orthogonal direction which cross | intersects the advancing direction.

A pair of U-shaped links 21 (not shown) in plan view are fixed to the second rod 12 at both ends of the second rod 12 by welding. The link 21 has a through hole (not shown) formed on the rear side of each side portion thereof. The second rod 12 is inserted into each of the through holes, and the header 15 is provided at the end of the second rod 12. Are attached by hot working or welding. Accordingly, the second rod 12 is prevented from coming off with respect to the link 21. Further, between the inner surface of the link 21 (upper surface in FIG. 16) and the second rod 12 and between the outer surface of the link 21 (lower surface in FIG. 16) and the header 15 of the second rod 12. A part of each front side is welded. The welds 17a and 17b are formed in the welded portion.

Further, elongated holes 25a and 25b extending in the traveling direction are formed on the front side of each side portion of the link 21. The first rod 11 positioned on the front side of the second rod 12 is inserted not only through the through hole of the link 22 but also through the long holes 25 a and 25 b of the link 21. Therefore, as shown by the arrow in FIG. 17, the link 21 is engaged with the first rod 11 by the long holes 25a and 25b so as to be rotatable and movable in the traveling direction. And the front link 22 comprised similarly to the link 21 with respect to the 1st rod 11 and the front rod 13 is attached.

Further, a wire 61 is attached so as to bridge the first rod 11 and the second rod 12 in a spiral shape. Both ends of the wire 61 are located near the link 21 (near the extra-banking 17a) and engaged so as to wind around the second rod 12, and the end edge 65 is located on the front side. Yes. A front wire 62 configured in the same manner as the wire 61 is attached to the first rod 11 and the front rod 13. That is, each end of the front wire 62 is engaged with the first rod 11 so as to be wound around. And the wire 61 is alternately arrange | positioned in the axial direction in the common 1st rod 11 each spanned with respect to the front wire 62. As shown in FIG. As described above, the wire 61 and the front wire 62 are configured to have a so-called M-shaped wire shape when viewed in a plan view shown in FIG.

Since the conveyor belt 80 is configured in this way, the pitch of each of the first rod 11, the second rod 12 and the front rod 13 is changed according to the position in the axial direction, thereby causing a horizontal as shown in FIG. It can be deformed corresponding to the direction curve. Further, when the link 21 with respect to the first rod 11 and the front link 22 with respect to the front rod 13 are rotated in the vertical direction, the vertical curve of the auxiliary drive sprocket 78 portion as shown in FIG. It can be deformed correspondingly.

FIG. 19 is a schematic cross-sectional view showing the state of the conveyor belt of the auxiliary drive sprocket shown in FIG.

Referring to the figure, the auxiliary drive sprocket 78 is engaged with a link (not shown) of the conveyor belt 80, whereby the attitude of the conveyor belt 80 is changed from the horizontal state to the vertical state. When the first rod 11 located on the front side of the second rod 12 moves downward, the link (not shown) and the wire 61 are rotated about the axis of the second rod 12 by the first rod 11, and the link The second rod 12 fixed to the same also rotates at the same time. At this time, since both end portions of the wire 61 are engaged with the second rod 12, the conveyor belt 80 rotates in the vertical direction while the end edge 65 of the wire 61 is positioned on the extra bank 17.

Further, both ends of the wire 61 are engaged with the first rod 11 so as to be wound around the second rod 12 located on the rear side, and only the state of being stretched over the first rod 11 is provided. Is engaged. Therefore, the wire 61 can move only forward with respect to the first rod 11. Therefore, in a state where the pitch between the first rod 11 and the second rod 12 adjacent to each other in the traveling direction is narrowed, the front portion 66 of the wire 61 protrudes forward beyond the first rod 11. And it will rotate on the sprocket 78 in such a state. Therefore, for example, in a structure in which the plate 85 for transferring the product conveyed by the conveyor belt 80 is installed on the front side of the auxiliary drive sprocket 78, the front portion 66 of the wire 61 contacts the plate 85. There is a risk that.

In order to solve such a problem, a conveyor belt 80 composed of differently shaped wires 61 is also manufactured.

FIG. 20 is a plan view showing such another conventional conveyor belt, which corresponds to FIG. 16, and FIG. 21 is a cross-sectional view of the XXI-XXI line shown in FIG.

The conveyor belt 81 has the same structure as the conveyor belt shown in FIG. 16 except for the shape of the wire 63 and the front wire 64. Therefore, only the shapes of the wire 63 and the front wire 64 will be described in detail.

The wire 63 is the same as that shown in FIG. 16 except that the wire 63 is attached so as to bridge the first rod 11 and the second rod 12 in a spiral shape, but the position of the edge 65 is different. . That is, each of both ends of the wire 63 is located in the vicinity of the front link 22 and is engaged so as to be wound around the first rod 11, and the end edge 65 is located on the front side. Further, a front wire 64 configured similarly to the wire 63 is attached to the first rod 11 and the front rod 13. In other words, each end portion of the front wire 64 is engaged so as to wind around the front rod 13. And the wire 63 is alternately arrange | positioned in the axial direction in the common 1st rod 11 each spanning with respect to the front wire 64. As shown in FIG. Therefore, the wire 63 and the front wire 64 are configured so as to have a so-called W-shaped wire shape when viewed in a plan view shown in FIG.

FIG. 22 is a schematic cross-sectional view showing the state of the conveyor belt of the auxiliary drive sprocket shown in FIG.

Referring to the drawing, the attitude of the conveyor belt 81 is changed from the horizontal state to the vertical state by the auxiliary drive sprocket 78, similarly to the conveyor belt 80 shown in FIG. When the front rod 13 located on the front side of the first rod 11 moves downward, the front rod 13 rotates a front link (not shown) and the front wire 64 around the axis of the first rod 11 and moves forward. The first rod 11 fixed to the link also rotates at the same time. At this time, the posture of the wire 63 and the second rod 12 positioned on the rear side of the front wire 64 is not changed. That is, the first rod 11 rotates in advance with respect to the wire 63. Therefore, both ends of the wire 63 and the first rod 11 on which both ends are positioned are rotated in a relatively displaced state. That is, the conveyor belt 80 rotates in the vertical direction in a state in which the end edge 65 of the wire 63 is displaced from the extra bank 17.

Further, both ends of the wire 63 are engaged with the second rod 12 so as to wrap around the first rod 11 located on the front side, and only the state of being stretched over the second rod 12 is provided. Is engaged. Therefore, the wire 63 is movable only backward with respect to the second rod 12. Therefore, in a state where the pitch between the first rod 11 and the second rod 12 adjacent to each other in the traveling direction is narrow, the front portion 66 of the wire 63 does not exceed the first rod 11, and the rear portion 67 of the wire 63 is the second portion. It protrudes backward beyond the rod 12. In this state, the auxiliary drive sprocket 78 is rotated. Therefore, unlike the M-shaped wire, even if the plate 85 is installed on the front side of the auxiliary drive sprocket 78, there is no possibility that the front portion 66 of the wire 63 contacts the plate 85.
In addition, a conveyor belt having such a W-shaped wire 63 and an elliptical shape in which both ends of the wire 63 extend forward is proposed (for example, Patent Document 1).

Japanese Patent No. 2664640

In the conveyor belt provided with the W-shaped wire as shown in FIG. 20 as described above, as described above, in the state where the end edge of the wire is in contact with the surplus at the rotating portion of the auxiliary drive sprocket or the like, these are relatively Rotate. That is, there is a problem in the durability of the conveyor belt because the end of the wire comes in contact with the excess. Further, in the state where the rod is pulled in the traveling direction, the end of the wire is in strong contact with the surplus, which further causes a problem in the durability of the conveyor belt.

On the other hand, in the conveyor belt provided with the M-shaped wire shown in FIG. 15, these wires rotate at the same time in a state where the edge of the wire is in contact with the surplus. Therefore, although the possibility that the edge of the wire comes into contact with scrapes is reduced, the edge of the wire may come into contact with the extras depending on the attitude of the conveyor belt, such as rotation in the horizontal direction. Further, as described above, in the conveyor belt provided with the M-shaped wire, there is a problem that the tip portion of the wire protrudes forward when rotating in the vertical direction.

In addition, the conveyor belt disclosed in Patent Document 1 is provided with a W-shaped wire, and the end of the wire and the surplus are always kept in a non-contact state depending on the shape thereof. It is not enough.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a conveyor belt that is less likely to damage the welded portion between the link and the rod due to the edge of the wire.

In order to achieve the above object, a conveyor belt according to a first aspect of the present invention is a conveyor belt, and includes a plurality of rods arranged at predetermined intervals in a direction intersecting a traveling direction, and the rods. A pair of links, which engage with the first rod so as to be rotatable, and are fixed to both ends of the second rod which is adjacent to the first rod in the rearward direction by welding, the first rod and the first rod; A wire that is spirally spanned between two rods and whose both ends are located in the vicinity of each of the links, and a link with respect to the front rod and the first rod adjacent to the front of the first rod And a front link and a front wire configured in the same manner as the wire, and the wires are arranged alternately with respect to the front wire in their axial direction on a common first rod that spans each other. , Both ends engage with one of the first rod and the second rod, and welded to each part between the inner surface of the link and the second rod and between the inner surface of the front link and the first rod. The end of the wire is located at a place where the welds of the link and the front link are not formed.

This configuration reduces the possibility that the end of the wire will come into contact with the weld.

In the conveyor belt according to a second aspect of the present invention, in the configuration of the invention according to the first aspect, both ends of the wire engage with the first rod, and the end of the wire rotates about the axis of the first rod. It is arrange | positioned in the position which does not contact the welding part which moves by.

* With this configuration, the end of the wire does not contact the weld regardless of the rotation of the first rod.

A conveyor belt according to a third aspect of the present invention is a conveyor belt, and a plurality of rods arranged at equal intervals in a direction intersecting the traveling direction, and the first rod among the rods is rotatable. A pair of links that are engaged and fixed by welding to both ends of the second rod that is adjacent to the first rod rearwardly in the traveling direction, and are spirally spanned between the first rod and the second rod. And a wire having both ends positioned in the vicinity of each of the links, and the front rod and the first rod adjacent to the front of the first rod are configured in the same manner as the link and the wire. A link and a front wire are attached, and the wires are alternately arranged in the axial direction in a common first rod that is spanned over the front wire, and both ends are connected to the first rod and the second wire. A portion of each of the link between the inner surface of the link and the second rod and between the inner surface of the front link and the first rod is formed with a weld by welding. The central part excluding the outer part on at least one side of the link is wound with an equal size, and the degree of winding of the outer part is larger than that of the central part.

With this configuration, even if the wire is pulled by the first rod, the edge is not strongly pressed against the weld.

In the conveyor belt according to the fourth aspect of the present invention, in the configuration of the invention according to the third aspect, both ends of the wire are engaged with the second rod, and the degree of winding of the outer portion of the wire is at the central portion. Compared to the forward direction, it is larger.

This configuration directly mitigates the influence of the movement of the first rod on both ends of the wire.

In the conveyor belt according to the fifth aspect of the present invention, in the configuration of the invention according to the third aspect, both ends of the wire engage with the first rod, and the degree of winding of the outer portion of the wire is at the central portion. Compared to the rear direction, it is larger.

This configuration directly mitigates the influence of the movement of the second rod on both ends of the wire.

A conveyor belt according to a sixth aspect of the present invention is a conveyor belt, and a plurality of rods arranged at predetermined intervals in a direction intersecting the traveling direction, and the first rod among the rods is rotatable. A pair of links that are engaged and fixed by welding to both ends of the second rod that is adjacent to the first rod rearwardly in the traveling direction, and are spirally spanned between the first rod and the second rod. And a wire having both ends positioned in the vicinity of each of the links, and the front rod and the first rod adjacent to the front of the first rod are configured in the same manner as the link and the wire. A rear link and a rear wire configured in the same manner as the link and the wire with respect to the rear rod and the second rod, which are adjacent to the second rod and the rear rod, with the link and the front wire attached thereto The attached wires are alternately arranged in the axial direction in the common first rod and the second rod, which are respectively bridged with respect to the front wire and the rear wire except for at least one end portion. Is engaged with one of the first rod and the second rod, and a welded portion is formed by welding between each of the inner surface of the link and the second rod and between the inner surface of the front link and the first rod. The end edge of one end of the wire is located on the inner side with respect to one of the adjacent front wire and rear wire.

∙ With this configuration, the end of the wire is not located on the welded part side. *

As described above, the conveyor belt according to the first aspect of the present invention reduces the possibility that the end of the wire comes into contact with the welded portion, so that the welded portion is not damaged and the reliability of the conveyor belt is improved.

In the conveyor belt according to the second aspect of the present invention, in addition to the effects of the invention according to the first aspect, the edge of the wire does not contact the welded portion regardless of the rotation of the first rod. Regardless, the reliability of the conveyor belt is further improved.

In the conveyor belt according to the third aspect of the present invention, even if the wire is pulled by the first rod, the edge is not strongly pressed against the welded portion, so that the welded portion is not damaged and the reliability of the conveyor belt is improved.

In the conveyor belt according to the fourth aspect of the present invention, in addition to the effects of the invention according to the third aspect, the influence on the both ends of the wire due to the movement of the first rod is directly mitigated. Regardless, the shape of the wire is efficient.

In the conveyor belt according to the fifth aspect of the present invention, in addition to the effect of the invention according to the third aspect, the influence on the both ends of the wire due to the movement of the second rod is directly mitigated. Regardless, the shape of the wire is efficient.

In the conveyor belt according to the sixth aspect of the present invention, since the end of the wire is not located on the welded part side, the welded part is not damaged, and the reliability of the conveyor belt is improved.

It is a top view of the conveyor belt by a 1st embodiment of this invention. It is a detailed top view of the conveyor belt shown in FIG. FIG. 3 is a view taken along line III-III shown in FIG. FIG. 4 is a sectional view taken along line IV-IV shown in FIG. 2. FIG. 5 is a sectional view taken along line VV shown in FIG. 2. FIG. 2 is a schematic cross-sectional view showing a rotation state of the conveyor belt in a vertical state, where (1) shows the conveyor belt shown in FIG. 1 and (2) shows the conventional conveyor belt shown in FIG. Is. It is a detailed top view of the conveyor belt by the 2nd Embodiment of this invention. FIG. 8 is a cross-sectional view taken along line VIII-VIII shown in FIG. FIG. 9 is a schematic cross-sectional view showing a rotation state of the conveyor belt in a vertical state, where (1) shows the conveyor belt shown in FIG. 7 and (2) shows the conventional conveyor belt shown in FIG. Is. It is a detailed top view of the conveyor belt by the 3rd Embodiment of this invention. It is a detailed top view of the conveyor belt by 4th Embodiment of this invention. It is a detailed top view of the conveyor belt by the 5th Embodiment of this invention. It is a detailed top view of the conveyor belt by the 6th Embodiment of this invention. It is a schematic perspective view of the partially broken state which shows the refrigerator provided with the conventional conveyor belt. FIG. 15 is a partial plan view of the conveyor belt shown in FIG. 14. It is a detailed top view of the conveyor belt shown in FIG. It is the figure seen from the XVII-XVII line shown in FIG. It is sectional drawing of the XVIII-XVIII line shown in FIG. It is the schematic sectional drawing which showed the state of the conveyor belt of the sprocket part for auxiliary drive shown in FIG. It is a top view which shows the other conventional conveyor belt. FIG. 21 is a cross-sectional view taken along line XXI-XXI shown in FIG. 20. It is the schematic sectional drawing which showed the state of the conveyor belt of the sprocket part for auxiliary drive shown in FIG.

FIG. 1 is a plan view of a conveyor belt according to a first embodiment of the present invention, which corresponds to FIG. 15 of the conventional example, and FIG. 2 is a detailed plan view of the conveyor belt shown in FIG. 3 is a view taken along line III-III shown in FIG. 2, FIG. 4 is a cross-sectional view taken along line IV-IV shown in FIG. 2, and FIG. 5 is a cross-sectional view taken along line VV shown in FIG. It is sectional drawing.

Referring to these drawings, the conveyor belt 1 according to this embodiment is made of, for example, stainless steel, and the structures of the links 21 and 22 and the rods 11 to 13 are the same as those of the conventional conveyor belt shown in FIG. 80. However, since the shapes of both ends of the wire 31 and the front wire 41 are different, the difference will be mainly described.

The wire 31 is attached so as to bridge the first rod 11 and the second rod 12 in a spiral shape. Each end of the wire 31 is engaged so as to wind around the second rod 12. As shown by the two-dot chain line in FIG. 4, both ends of the wire 31 are wound around the second rod 12 by (1 + 1/4) rounds, so that the edge 65 is located on the rear side. Yes. That is, the end edge 65 of the wire 31 is located at a location where the extra-strip 17a is not formed.

Further, a front wire 41 configured similarly to the wire 31 is attached to the first rod 11 and the front rod 13. That is, both ends of the front wire 41 are engaged so as to be wound around the first rod 11 and the end edges thereof are located on the rear side. And the wire 31 is alternately arrange | positioned in the axial direction in the common 1st rod 11 each spanning with respect to the front wire 41. As shown in FIG. Therefore, the wire 31 and the front wire 41 are configured to have an M-shaped wire shape.

Next, the effect of the conveyor belt 1 including the wire 31 and the front wire 41 will be described.

6 is a schematic cross-sectional view showing a vertical rotation state of the conveyor belt, in which (1) shows the conveyor belt shown in FIG. 1, and (2) shows the conventional conveyor shown in FIG. The belt is shown.

First, referring to (1), in the conveyor belt 1, as described above, the end edge 65 of the wire 31 is located at a location where the extra-strip 17 is not formed. Therefore, in the state where the rod 12 is pulled in the horizontal direction as shown by the arrows in the figure, there is no possibility that the end edge 65 of the wire 31 contacts the extra-strip 17. Furthermore, even when the wire 31 rotates in the vertical direction as indicated by the arrows in the figure, the end edge 65 of the wire 31 and the rod 12 rotate in synchronization with each other as described above. However, there is no possibility of contact with the surplus. As a result, the extra-strip 17 is not damaged by the end edge 65 of the wire 31, so that the reliability of the conveyor belt 1 is improved.

Next, referring to (2), in the conventional conveyor belt 80, the end edge 65 of the wire 60 is positioned in the vicinity of the surplus 17 on the rod 11. Therefore, although the end edge 65 of the wire 60 and the rod 11 rotate at the same time, the end edge 65 of the wire 60 may be extra-strength 17 depending on the moving posture of the conveyor belt 80, for example, when the pitch between the rods 11 is narrow. There is a possibility that the surplus 17 is scraped off. Therefore, the conveyor belt 80 is less reliable than the conveyor belt 1 shown in (1).

FIG. 7 is a detailed plan view of a conveyor belt according to the second embodiment of the present invention, and FIG. 8 is a cross-sectional view taken along line VIII-VIII shown in FIG.

Referring to these drawings, the structures of the links 21 and 22 and the rods 11 to 13 of the conveyor belt 2 according to this embodiment are the same as those of the conventional conveyor belt 81 shown in FIG. Since the shapes of both ends of the front wire 42 are different, the difference will be mainly described.

The wire 32 is attached so as to bridge the first rod 11 and the second rod 12 in a spiral shape. Each end of the wire 32 is engaged so as to wind around the first rod 11. As shown by the two-dot chain line in FIG. 8, both ends of the wire 32 are wound around the first rod 11 by (1 + 3/4) rounds, so that the edge 65 is located on the rear side. Yes. That is, the end edge 65 of the wire 32 is located at a location where the extra-strip 17a is not formed.

Further, a front wire 42 configured similarly to the wire 32 is attached to the first rod 11 and the front rod 13. That is, each end portion of the front wire 42 is engaged with the front rod 13 so that the end edge thereof is located on the rear side. The wires 32 are alternately arranged in the axial direction of the common first rod 11 that is bridged over the front wire 42. Accordingly, the wire 32 and the front wire 42 are configured to have a W-shaped wire shape.

Next, the effect of the conveyor belt 2 including such a wire 32 and a front wire 42 will be described.

FIG. 9 is a schematic cross-sectional view showing a vertical rotation state of the conveyor belt, wherein (1) shows the conveyor belt shown in FIG. 7, and (2) shows the conventional conveyor shown in FIG. The belt is shown.

First, referring to (1), in the conveyor belt 2, as described above, the end edge 65 of the wire 32 is located at a location where the extra-strip 17 is not formed. Therefore, in a state where the rod 11 is pulled in the horizontal direction, there is no possibility that the end edge 65 of the wire 32 contacts the surplus. For this reason, in such a state, damage to the extra-banking 17 due to the end edge 65 of the wire 32 is eliminated, so that the reliability of the conveyor belt 2 is improved.

Further, even when the front wire 42 is rotated in the vertical direction as indicated by an arrow in the figure, the end edge 65 of the wire 32 and the extra-strip 17 on the rod 11 are not in contact with each other. Yes. Therefore, regardless of the rotation of the rod 11, there is no possibility that the end edge 65 of the wire 32 comes into contact with the extra bank 17. Therefore, the reliability of the conveyor belt 2 is further improved regardless of the movement posture such as the vertical movement of the conveyor belt 2 or the horizontal movement described above.

Next, referring to (2), in the conventional conveyor belt 81, the end edge 65 of the wire 63 is located in the vicinity of the surplus 17 on the rod 11. Since the end edge 65 of the wire 63 and the rod 11 rotate relatively, the end edge 65 of the wire 63 comes into contact with the extra bank 17 and the extra bank 17 is scraped off. Accordingly, the conveyor belt 81 is less reliable than the conveyor belt 2 shown in (1).

FIG. 10 is a detailed plan view of a conveyor belt according to a third embodiment of the present invention.

Referring to the figure, the structures of the links 21 and 22 and the rods 11 to 13 of the conveyor belt 3 according to this embodiment are the same as those of the conventional conveyor belt 80 shown in FIG. Since the shape of the wire 43 is different, the difference will be mainly described.

The wire 33 is attached so as to bridge the first rod 11 and the second rod 12 in a spiral shape, and each end portion of the wire 33 is engaged so as to be wound around the second rod 12. The outer portion 55 of the spiral wire 33 is wound so as to be larger by a length X (about 2 to 3 mm) in the forward direction than the central portion 56 of the wire 33 wound to an equal size. ing. Moreover, the front wire 43 comprised similarly to the wire 33 is attached with respect to the 1st rod 11 and the front rod 13, and the wire 33 and the front wire 43 are formed in the M-shaped wire shape.

Therefore, even if the wire 33 is pulled by the first rod 11 by the movement of the conveyor belt 3 as indicated by the arrows in the figure, the first rod 11 does not press the outer portion 55 of the wire 33. As a result, it is difficult to transmit the pulling force of the first rod 11 to the end edges 65 at both ends of the wire 33, so that the end edge 65 of the wire 33 is not strongly pressed by the extra bank 17 a. Therefore, there is no damage of the extra-strip 17a by the edge 65 of the wire 33, and the reliability of the conveyor belt 3 improves.

As described above, the wire 33 is an M-shaped wire 33 and the degree of winding of the outer portion 55 of the wire 33 is larger only in the forward direction than the central portion 56, so that the wire 33 is moved by the movement of the first rod 11. The influence on both ends is directly mitigated. Therefore, an efficient wire shape is obtained regardless of the layout of the conveyor belt 3.

FIG. 11 is a detailed plan view of a conveyor belt according to a fourth embodiment of the present invention.

Referring to the figure, the structures of the links 21 and 22 and the rods 11 to 13 of the conveyor belt 4 according to this embodiment are the same as those of the conventional conveyor belt 81 shown in FIG. Since the shape of the wire 44 is different, the difference will be mainly described.

The wire 34 is attached so as to bridge the first rod 11 and the second rod 12 in a spiral manner, and each end portion of the wire 34 is engaged so as to be wound around the first rod 11. The outer portion 55 of the spiral wire 34 is wound so as to be larger by a length Y (about 2 to 3 mm) in the rearward direction than the central portion 56 of the wire 34 wound to an equal size. ing. Moreover, the front wire 44 comprised similarly to the wire 34 is attached with respect to the 1st rod 11 and the front rod 13, and the wire 34 and the front wire 44 are formed in the W-shaped wire shape.

Thus, the outer portion 55 of the wire 34 is wound so as to be larger in the rearward direction than the central portion 56. Therefore, as the conveyor belt 4 moves as indicated by the arrows in the figure, even if the wire 34 is pulled by the second rod 12, the pulling force of the second rod 12 is transmitted to the end edges 65 at both ends of the wire 34. It becomes difficult. That is, since it becomes difficult to deform | transform so that the both ends of the wire 34 may wind around the 1st rod 11, the end edge 65 of the wire 34 is not pressed strongly by the surplus 17a. Therefore, there is no damage of the extra-strip 17a by the edge 65 of the wire 34, and the reliability of the conveyor belt 4 improves.

As described above, since the W-shaped wire 34 and the degree of winding of the outer portion 55 of the wire 34 are larger only in the rearward direction than the central portion 56, the wire 34 is moved by the movement of the second rod 12. The influence on both ends is directly mitigated. Therefore, an efficient wire shape is obtained regardless of the layout of the conveyor belt 4.

FIG. 12 is a detailed plan view of a conveyor belt according to the fifth embodiment of the present invention.

Referring to the figure, the structures of the links 21 to 23 and the rods 11 to 14 of the conveyor belt 5 according to this embodiment are the same as those of the conventional conveyor belt 80 shown in FIG. The explanation will be centered. In this embodiment, the rear rod 14 adjacent rearward to the second rod 12 and the rear rod 14 and the second rod 12 are configured in the same manner as the link 21 and the wire 35 described later. The rear link 23 and the rear wire 48 are illustrated. In this embodiment, the arrangement of both ends of the wire 35, the front wire 45, and the rear wire 48 is different from that of the conventional conveyor belt 80.

The wire 35 is attached so as to bridge the first rod 11 and the second rod 12 in a spiral shape, and both end portions thereof are engaged so as to be wound around the second rod 12. Further, a front wire 45 and a rear wire 48 configured in the same manner as the wire 35 are attached to the first rod 11 and the front rod 13 and to the second rod 12 and the rear rod 14. Accordingly, the wire 35, the front wire 45, and the rear wire 48 are formed in an M-shaped wire shape.

Furthermore, the winding position of the both ends of the wire 35 around the second rod 12 is located on the inner side with respect to the outer portion 55 of the adjacent rear wire 48 from the position of the normal two-dot chain line shown in the figure. Is formed. The front wire 45 is similarly formed with respect to the adjacent wire 35. Therefore, as shown in the figure, the end edge 65 of the wire 35 is separated from the extra bank 17a inward. Therefore, there is no damage of the extra-strip 17a by the edge 65 of the wire 35, and the reliability of the conveyor belt 5 improves.

FIG. 13 is a detailed plan view of a conveyor belt according to the sixth embodiment of the present invention.

Referring to the figure, the structures of the links 21 to 23 and the rods 11 to 14 of the conveyor belt 6 according to this embodiment are the same as those of the conventional conveyor belt 81 shown in FIG. The explanation will be centered. In this embodiment, the rear rod 14 adjacent rearward to the second rod 12 and the rear rod 14 and the second rod 12 are configured in the same manner as the link 21 and the wire 36 described later. The rear link 23 and the rear wire 49 are illustrated. In this embodiment, the arrangement of both ends of the wire 36, the front wire 46, and the rear wire 49 is different from that of the conventional conveyor belt 81.

The wire 36 is attached so as to bridge the first rod 11 and the second rod 12 in a spiral shape, and both ends thereof are engaged so as to be wound around the first rod 11. Further, a front wire 46 and a rear wire 49 configured in the same manner as the wire 36 are attached to the first rod 11 and the front rod 13 and to the second rod 12 and the rear rod 14. Accordingly, the wire 36, the front wire 46, and the rear wire 49 are formed in a W-shaped wire shape.

Furthermore, the winding position of the both ends of the wire 36 around the first rod 11 is located on the inner side with respect to the outer portion 55 of the adjacent front wire 46 from the position of the normal two-dot chain line shown in the figure. Is formed. The rear wire 49 is similarly formed with respect to the adjacent wire 36. Therefore, as shown in the figure, the end edge 65 of the wire 36 is separated from the extra-bank 17a inward. For this reason, there is no damage to the surplus 17a due to the end edge 65 of the wire 36, and the reliability of the conveyor belt 6 is improved.

In each of the above embodiments, the conveyor belt is used in a refrigerator, but it goes without saying that it can be similarly applied to other devices such as a cooler.

In each of the above embodiments, the surplus in the welded portion is a concept that includes not only the originally raised weld metal but also the welded portion after the weld metal has been polished.

Furthermore, in each of the above-described embodiments, the spiral directions of the adjacent wires are arranged to be opposite to each other, but the spiral directions of the adjacent wires are arranged to be the same. Also good.

Furthermore, in each of the above-described embodiments, each of the rods is arranged in an orthogonal direction that intersects the traveling direction. However, if each of the rods is disposed in a direction that intersects the traveling direction, the rod is orthogonal. It does not have to be a direction.

Furthermore, in each of the above-described embodiments, a link having a specific shape is provided. However, as long as the link is rotatably engaged with the first rod and fixed to the second rod by welding, It may be a shape.

Furthermore, in each of the above embodiments, the inner side extra-banking is formed on the front side of the rod, but if the link and the rod can be securely fixed, other parts such as the rear side of the rod, It may be formed at a plurality of locations. In that case, in 1st and 2nd embodiment, the edge of a wire should just be located in the location in which the surplus is not formed.

Furthermore, in the first to fourth embodiments described above, the end edge of the wire is located on the outer side with respect to one of the adjacent front wire and the rear wire (not shown). You may be located inward with respect to one of a wire and a back wire.

Furthermore, in the first, second, fifth, and sixth embodiments, the rods are arranged at regular intervals, but the rods are arranged at predetermined intervals that are not equal intervals. Also good.

Furthermore, in the first and second embodiments described above, the wires are all wound to an equal size, but at least the links in the wire are compared to the central portion wound to an equal size. You may form so that the degree of winding of the outer part of one side may be enlarged.

Further, in the third and fourth embodiments described above, the wire is formed to have a larger degree of winding of the outer part on both sides of the link than the center part, but only on one side of the outer part is larger. It may be wound.

Furthermore, in the third and fourth embodiments described above, the degree of winding of the outer portion of the wire is formed so as to increase only in the forward direction or the backward direction, but the degree of winding of the wire is As long as it is formed larger than the central portion, it may be formed in any direction.

As described above, the conveyor belt according to the present invention is suitable when, for example, a food or the like to be frozen in a refrigerator is placed and transferred thereon.

Claims (6)

A conveyor belt (1),
A plurality of rods (11 to 13) arranged at predetermined intervals in a direction intersecting the traveling direction;
Among the rods, the first rod (11) is rotatably engaged and fixed to both ends of the second rod (12) adjacent to the first rod rearward in the traveling direction by welding. A pair of links (21);
Wires (31, 32) that are spirally spanned between the first rod and the second rod and whose both ends are located in the vicinity of each of the links,
A front link (22) and a front wire (41, 42) configured similarly to the link and the wire with respect to the front rod (13) and the first rod adjacent to the front with respect to the first rod. Is installed and
The wires are alternately arranged in the axial direction of the common first rods that are bridged with respect to the front wires, and both end portions are connected to one of the first rod and the second rod. Engage,
A welded portion (17) by welding is formed between each of the inner surface of the link and the second rod and between the inner surface of the front link and the first rod. An end edge (65) is a conveyor belt located in the place where the weld of the said link and the said front link is not formed. The ends of the wire engage the first rod;
2. The conveyor belt according to claim 1, wherein the end edge of the wire is disposed at a position that does not contact the welded portion that is moved by rotation of the axial center of the first rod. A conveyor belt (1),
A plurality of rods (11 to 13) arranged at equal intervals in a direction intersecting the traveling direction;
Among the rods, the first rod (11) is rotatably engaged and fixed to both ends of the second rod (12) adjacent to the first rod rearward in the traveling direction by welding. A pair of links (21);
Wires (33, 34) that are spirally spanned between the first rod and the second rod and whose both ends are located in the vicinity of each of the links,
A front link (22) and a front wire (43, 44) configured in the same manner as the link and the wire with respect to the front rod (13) adjacent to the front with respect to the first rod and the first rod. Is installed and
The wires are alternately arranged in the axial direction of the common first rods that are bridged with respect to the front wires, and both end portions are connected to one of the first rod and the second rod. Engage,
A welded portion (17) by the welding is formed between a part between the inner surface of the link and the second rod and a part between the inner surface of the front link and the first rod,
The central portion (56) of the wire except for the outer portion (55) on at least one side of the link is wound to an equal size, and the degree of winding of the outer portion is compared with that of the central portion. Big, conveyor belt. The both ends of the wire engage the second rod;
The conveyor belt according to claim 3, wherein the degree of winding of the outer portion of the wire is larger only in the forward direction than the central portion. The ends of the wire engage the first rod;
The conveyor belt according to claim 3, wherein the degree of winding of the outer portion of the wire is larger only in the rearward direction than the central portion. Conveyor belt (5, 6),
A plurality of rods (11 to 14) arranged at predetermined intervals in a direction intersecting the traveling direction;
Among the rods, the first rod (11) is rotatably engaged and fixed to both ends of the second rod (12) adjacent to the first rod rearward in the traveling direction by welding. A pair of links (21);
Wires (35, 35) that are spirally spanned between the first rod and the second rod and whose both ends are located in the vicinity of each of the links,
A front link (22) and a front wire (45, 46) configured similarly to the link and the wire with respect to the front rod (13) and the first rod adjacent to the front with respect to the first rod. And a rear link (23) and a rear wire configured in the same manner as the link and the wire with respect to the rear rod (14) and the second rod adjacent to the second rod rearwardly. (48, 49) are attached,
The wires are alternately arranged in the axial direction in the first rod and the second rod that are spanned over the front wire and the rear wire except for at least one end, and The both ends engage with one of the first rod and the second rod,
A welded portion (17) by the welding is formed between a part between the inner surface of the link and the second rod and a part between the inner surface of the front link and the first rod,
The conveyor belt, wherein an edge (65) of the one end of the wire is located inward with respect to one of the adjacent front wire and rear wire.

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