JP2000142951A - Net conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a net conveyor excellent in maintenanceability and productivity with simple construction, capable of preventing meandering of the net belt, and allowing easy attaching any detaching of the net belt. SOLUTION: This net conveyor 1 is provided with frames 2a, 2b, a driven roller 8 rotatably journalled to one ends of the frames 2a, 2b, a driving part 10 arranged on the lower parts of the frames 2a, 2b, and an endless net belt 11 tensely stretched between the driven roller 8 and the driving part 10. At comprises a driving roller rotatably journalled to the driving part 10, a rubber layer having resilience elasticity, abrasion resistance, and heat aging resistance mounted on the outer circumferential face of the driving roller, and belt guide parts 9 formed into projecting stripes of both end parts in the axial direction of the driven roller 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a net conveyor for transporting various products and articles such as foods using an endless net belt.

[0002]

2. Description of the Related Art Conventionally, conveyors have been used to transport various products and articles such as foods. In particular, when performing various processing processes such as cooling and heating by applying various fluids such as cold air, hot air, oil, etc. to the articles during the transportation of the articles, a wire or other striated body forms a grid or mesh. A net conveyor using the formed endless net belt is used, and the following is disclosed as a conventional net conveyor. A, Japanese Utility Model Laid-Open No. 60-1720 (hereinafter referred to as "A") discloses a frame, a driving roller supported by a frame, a driven roller supported by a frame and parallel to the driving roller, and a driving roller. And a net belt that is stretched between the driven roller and the driven roller at the position of the driven roller and changes direction from the return side to the transport side. A compression spring is provided between the frame and both ends in the axial direction of the driven roller and biases the driven roller in a direction away from the drive roller, and a return side close to the driven roller is provided. There is disclosed a net conveyor in which correction guides engageable with both ends of a net belt are attached to the frame. b, Japanese Patent No. 2608696 (hereinafter referred to as “B”) discloses a method for connecting a plurality of spiral filaments into an endless belt for a net conveyor belt in which horizontal bars are inserted at regular intervals in the length direction. A guide portion formed by a horizontal bar bent in a bulging shape on the same surface side without a line is formed, and this net conveyor belt is taken up by a take-up pulley, a snap pulley,
A conveyor is disclosed in which a belt for a net conveyor is caused to run by pulling over a pulley such as a driving pulley and rotating the driving pulley by a gear motor.

[0003]

However, the above-described conventional net conveyor has the following problems.
In the net conveyor described in JP-A No. Because it has a compression spring between both ends in the axial direction of the driven roller and the frame, and has a correction guide that can be engaged with both ends of the return-side net belt close to the driven roller, It has a complicated structure and lacks productivity, and lacks maintainability. b. Since the compression spring is interposed between the both ends of the driven roller in the axial direction and the frame, dust and the like easily adhere to the compression spring and lack hygiene. c. Since the extension of the net belt is absorbed by the urging force of the compression spring, it becomes difficult to maintain the tension of the net belt due to the deterioration of the compression spring, and the net conveyor lacks durability. In the conveyor described in JP-B-2, a. Since the net conveyor belt is formed by bending the horizontal bar in a bulging shape to form a guide portion over the entire length, the conveying surface of the article on the net conveyor belt becomes narrow, and the width of the net conveyor belt is reduced. Larger and larger conveyor. b. Since the net conveyor belt requires a guide portion in which the horizontal bar is bent in a bulging shape, the structure of the net conveyor belt is complicated and lacks productivity. c. Since the guide portion of the net conveyor belt is fitted to the carrier guide formed on the travel path of the net conveyor belt, the net conveyor belt runs,
It is difficult to attach and detach the belt for the net conveyor, and it lacks maintainability.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and has a simple structure which is excellent in productivity, prevents meandering of the net belt, and is easy to attach and detach the net belt, and is excellent in maintainability. The purpose is to provide.

[0005]

In order to solve the above-mentioned conventional problems, a net conveyor according to the present invention has the following configuration. The net conveyor according to claim 1, wherein the frame, a driven roller pivotally supported at one or both ends of the frame, a driving unit disposed at the other end or lower part of the frame, and the driven roller And an endless net belt stretched between the drive units, wherein the drive roller is supported by the drive unit, and a rebound resilience mounted on an outer peripheral surface of the drive roller. The driven roller has a configuration in which a rubber layer having abrasion resistance and heat aging resistance, and a belt guide portion formed in a ridge or a projection shape at both ends in the axial direction of the driven roller. As a result, the net belt can be driven to travel by the frictional force between the net belt and the rubber layer of the drive roller as the drive roller rotates, and the rubber layer has rebound resilience, abrasion resistance, and heat aging resistance. Therefore, the slip between the net belt and the rubber layer during running driving of the net belt can be prevented, the net belt can be reliably driven and the rubber layer of the drive roller can be prevented from being worn, and the durability can be improved. Having. Since the driven roller has a belt guide portion formed in a ridge or a projection shape at both ends in the axial direction, both sides of the net belt come into contact with the belt guide portion when the net belt is driven to travel, and the It has the effect of preventing meandering. In addition, the net belt is driven by the friction between the rubber layer attached to the outer peripheral surface of the drive roller and the net belt, and the belt guide of the driven roller prevents the net belt from meandering. There is no need for a belt guide portion formed in the shape of a ridge or a projection on the roller, and the number of parts of the drive roller can be reduced, thereby improving the productivity and maintainability. Here, as the rubber layer, chloroprene rubber (CR), styrene-butadiene rubber (SB) having excellent hardness, tensile strength, tear strength, abrasion resistance and pure rubber strength are used.
R), hydrogenated nitrile rubber (HNBR), fluoro rubber (FKM), chlorosulfonated polyethylene (CS
M), vulcanized rubber such as chlorinated polyethylene (CM), urethane rubber (U) and the like are used. In particular, in the case of food factories, CR, HNBR, FK that withstands hot water sterilization and alkali sterilization to cope with hygiene management by HACCP.
M, CSM and CM are preferably used. The belt guide portion is formed of a ridge or a plurality of protrusions on the same circumference on the outer peripheral surface of the driven roller. Further, a ring-shaped object which can be inserted and fixed to the driven roller or a ring-shaped object formed with a projection may be inserted and fixed to both ends of the driven roller to form a belt guide portion of a ridge or a projection. A metal roller made of stainless steel or the like is used as the driven roller. This allows
The frictional force between the driven roller and the net belt can be reduced, the running drive of the net belt can be made smooth, and the overload on the drive roller can be prevented. As the net belt, a net belt formed of a linear body such as a wire is used.

According to a second aspect of the present invention, in the net conveyor according to the first aspect, the rubber layer of the driving roller has a thickness of 3 mm to 10 mm, preferably 5 mm to 10 mm.
It has a configuration formed to a thickness of 8 mm. This has the effect of reducing the frequency of replacing the drive roller due to wear of the rubber layer due to friction between the rubber layer and the net belt, and improving the workability of attaching the rubber layer to the drive roller. In addition, since the rubber layer has a predetermined thickness, the net belt can be sufficiently engaged with the rubber layer, and the drive belt can reliably drive the net belt while driving the net belt. Has the effect that slip can be prevented. Here, as the thickness of the rubber layer becomes smaller than 5 mm, the frequency of replacing the drive roller increases due to the wear of the rubber layer, and the maintenance tends to be complicated. As the thickness of the rubber layer becomes larger than 8 mm. In addition, it is difficult to attach the rubber layer to the driving roller, and the productivity of the driving roller tends to be lacking.

According to a third aspect of the present invention, the net conveyor according to the first or second aspect is arranged on the frame toward the side of the net belt instead of the belt guide. And a guide portion made of synthetic resin fitted to the guide plate. Accordingly, both sides of the net belt can be brought into contact with the guide portion when the net belt is driven to travel, and the net belt can be prevented from meandering. In addition, since the guide portion made of resin is provided, there is an effect that noise generated at the time of driving the travel of the net belt due to contact between the guide portion and both side portions of the net belt can be suppressed. Here, as the resin guide portion, a copolymer type polyacetal, ultra-high molecular weight polyethylene, Newlite (manufactured by Newlite Co., Ltd.) or the like having a low friction coefficient and wear resistance is used. This can reduce the frictional force between the net belt and the guide portion when the net belt travels, and can prevent the drive roller from being overloaded. Further, when the guide plate is arranged so as to be orthogonal to the frame and movable in a direction perpendicular to the frame, the position of the guide plate can be moved according to the width of the net belt, so that the guide portion can abut on both sides of the net belt.

According to a fourth aspect of the present invention, in the net conveyor as set forth in any one of the first to third aspects, the belt guide portion and an upper end portion of the guide portion are formed of the net belt. From the upper surface, the thickness (d) of the net belt is d / 2 mm to 10 mm, preferably 0 mm to
It has a configuration formed 10 mm, more preferably 0 mm to 3 mm higher. Thereby, the side portion of the net belt can be brought into contact with the belt guide portion and the guide portion, and it is possible to reliably prevent the net belt from meandering at the time of traveling driving of the net belt, and articles conveyed on the net belt. Has a function of preventing collision with the belt guide portion and the guide portion. Here, as the belt guide portion and the upper end portion of the guide portion become lower than the upper surface of the net belt, it becomes difficult to make the side portion of the net belt contact with the belt guide portion or the guide portion. And the net belt meandering cannot be prevented, and the belt guide portion and the upper end of the guide portion are located 3 mm from the upper surface of the net belt.
As the distance becomes higher than mm, articles conveyed on the net belt tend to collide with the belt guide portion and the guide portion, both of which are not preferred.

According to a fifth aspect of the present invention, in the net conveyor according to any one of the first to fourth aspects, the driven roller is rotatable up and down on one or both ends of the frame. Has a configuration in which it is pivotally supported by an auxiliary frame disposed so as to be able to be attached to or detached from the vehicle. Accordingly, by rotating the auxiliary frame upward of the frame, the net belt stretched between the driven roller and the driving unit can be loosened. Also, by removing the auxiliary frame from the frame, the auxiliary frame and the like can be easily cleaned and replaced. Here, as an auxiliary frame, a frame engaging portion rotatably engaged with a protrusion or the like formed on the frame,
One having a configuration including a frame fixing portion for detachably fixing the auxiliary frame to the frame, a roller bearing portion for supporting the driven roller, and a belt adjusting portion for adjusting the tension of the net belt is used. .

A net conveyor according to a sixth aspect of the present invention is the net conveyor according to any one of the first to fifth aspects, wherein one side of the frame has an opening for detaching the net belt. It has a configuration provided with leg portions. As a result, the net belt can be easily removed from the opening by simply loosening the tension of the net belt and removing the net belt from the driven roller and the drive unit. Has the effect that washing can be easily performed. Here, as the leg portion, a standing leg portion standing upright on one side of the frame toward the lower side of the frame, and a lateral leg portion formed at a lower end of the standing leg portion substantially perpendicular to the longitudinal direction of the frame. A substantially L-shaped leg portion, a standing leg portion provided on both sides in the lateral direction of the frame toward the lower side of the frame, a lateral leg portion connecting the opposed standing leg portions, and one of the frames. For example, a leg portion having an open portion formed to be freely open above the side leg portion is used. The standing leg of the leg is fixed to the side of the frame using a horizontal member or the like that is inserted perpendicularly to the longitudinal direction of the frame. Further, each leg may be reinforced by connecting the lateral legs or the standing legs with a reinforcing material or the like.

According to a seventh aspect of the present invention, in the net conveyor according to the first aspect of the present invention, the rubber layer of the driving roller and the outer peripheral surface of the driven roller are co-linear. And a guide projection projecting from the lower surface of the net belt and engaging with the engagement groove. Thus, since the guide protrusion of the net belt and the engagement groove formed in the rubber layer and the driven roller are provided, the guide protrusion of the net belt is engaged with the engagement groove, and This has the effect of preventing meandering during traveling driving. Here, as the guide protrusion, a ridge formed linearly in the length direction on the lower surface of the net belt, or a protrusion formed at a predetermined interval is used. In addition, one or more engagement grooves and guide protrusions are formed in the length direction of the net belt.

[0012]

(Embodiment 1) A net conveyor according to Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is an overall perspective view of the net conveyor according to the first embodiment, FIG. 2 is a cross-sectional side view of a main part of the net conveyor according to the first embodiment, and FIG. It is a principal part exploded perspective view. 1 and 2, reference numeral 1 denotes a net conveyor according to the first embodiment, 2a and 2b denote frames of the net conveyor 1, 2c denotes a frame connecting portion which connects the frames 2a and 2b and is orthogonal to the longitudinal direction of the frames 2a and 2b, Reference numeral 3 denotes an auxiliary frame detachably provided at one end of the frames 2a and 2b. Reference numeral 4a denotes a frame engaging portion formed at one end of the auxiliary frame 3 in a cutout shape. Reference numeral 4b projects from the outer walls of the frames 2a and 2b. The frame protrusion 5 into which the frame engaging portion 4a is engaged is a frame fixing groove 5a (see FIG. 4) formed by notching the auxiliary frame 3, and the auxiliary frame 3 is detachably attached to the frames 2a and 2b by screwing or the like. A frame fixing portion 6 to be freely fixed is a roller bearing portion formed in a notch at an end of the frame 2a, 2b and an end of the auxiliary frame 3, 7a, 7
b is a belt adjusting portion for adjusting the tension and meandering of the net belt; 8 is a driven roller made of a rotatable stainless steel metal roller having a roller shaft 8a inserted into a roller bearing portion 6; Belt guides 10 are formed at both ends in the axial direction at a predetermined height in a ridge shape.
A drive portion 11 disposed below the a and 2b, 11 is an endless net belt stretched between the driven roller 8 and the drive portion 10 and formed in a mesh shape by a linear body such as a wire, and 12a is connected to a frame. A rail fitting portion formed substantially parallel to the frames 2a and 2b on the upper surface of the portion 2c, a copolymer polyacetal 12b fitted with the rail fitting portion 12a and having a low friction coefficient and abrasion resistance, A belt support rail 13 made of a synthetic resin such as high molecular weight polyethylene or Newlite (manufactured by Newlight Corporation). Reference numeral 13 denotes a substantially L-shaped leg having an upper end fixed to the frame 2a side and having an opening 13a below the frame 2b side. , 13b are standing legs of the leg 13 whose upper side is fixed to the frame 2a side by a transverse member 13c inserted perpendicular to the longitudinal direction of the frames 2a, 2b, and 13d is a standing leg 13b.
Is a lateral leg of the leg 13 formed substantially at a right angle to the longitudinal direction of the frames 2a and 2b at the lower end of the leg. As shown in FIG. 2, in the first embodiment, the belt guide 9 has a height (the height is 0) at which the upper end is substantially flush with the upper surface of the net belt 11.
mm). Further, as the auxiliary frame 3, not only one ends of the frames 2a and 2b but also both ends may be detachably provided, and the driven roller 8 may be pivotally supported. Also,
A reinforcing material may be provided between the horizontal leg portions 13d of the leg portions 13.
In FIG. 3, the upper ends of 14a and 14b are frames 2a and 14b.
The drive support plate 15a is fixed to the drive support plate 14a.
The shaft support portion 16 is formed in the drive support plate 14b with an inverted L
A shaft locking portion formed by cutting out in a letter shape, 17 is a roller shaft 1
One end of 7a is inserted into the shaft support portion 15 and the other end is inserted and locked in the shaft locking portion 16 and has a belt guide portion 9 formed on both ends in the axial direction with a ridge at a predetermined height. Is a tension roller that can rotate freely, 18 is a drive roller composed of a motor pulley that is mounted on the drive support plates 14a and 14b, and 19 is a repulsion elasticity and abrasion resistance mounted on the outer peripheral surface of the drive roller 18.
A rubber layer having a heat aging resistance and having a thickness of about 5 mm and made of any one of chloroprene rubber (CR), styrene-butadiene rubber (SBR), hydrogenated nitrile rubber (HNBR), fluororubber (FKM) and the like. . Instead of the driving roller 18 composed of a motor pulley, a driving roller driven by a chain driving composed of a chain disposed between the driving roller 18 and the driving motor disposed on the frame 2a side may be used.

The operation of the net conveyor according to the first embodiment configured as described above will be described below with reference to the drawings. FIG. 4 is a perspective view showing the net conveyor according to the first embodiment when the net belt is detached. When removing the net belt 11 from the net conveyor 1, loosen the screws and the like of the frame fixing portion 5, release the fixing of the auxiliary frame 3, and rotate the auxiliary frame 3 upward around the frame protrusion 4b as shown in FIG. Move to loosen the net belt 11. Next, the roller shaft 17a of each tension roller 17
Of the roller shaft 17a, the other end of the roller shaft 17a is removed from the shaft support 15, and the tension rollers 17 are removed from the drive support plates 14a and 14b. remove. Next, the net belt 11 is pulled out to the open portion 13a side of the leg portion 13 and removed from the net conveyor 1. After removing the net belt 11, the frames 2a, 2b, the auxiliary frame 3, the rollers 8, 17, 19, the net belt 11, and the like are each washed. Net belt 11 to net conveyor 1
When attaching the net belt 11 to the open portion 13 of the leg portion 13, the tension roller 17 is removed from the drive support plates 14a and 14b, and the auxiliary frame 3 is rotated upward.
a, and extends between the driven roller 8 and the drive unit 10. Here, the net belt 11 is disposed between the driven roller 8 and the belt guide 9 of the tension roller 17, and the lower surface of the upper net belt 11 is supported by the belt support rail 12b. Next, a part of the lower net belt 11 is brought into contact with the drive roller 18, and the roller shaft 17 a of each tension roller 17 is connected to the shaft support 15 and the shaft lock 16.
And the net belt 11 is wound around the drive roller 18 and mounted. Next, the auxiliary frame 3 is rotated downward around the frame protrusion 4b to fix the auxiliary frame 3 to the frames 2a and 2b with the frame fixing portion 5, and the net belt 11 is moved between the driven roller 8 and the driving portion 10. Stretch.
Further, the tension of the net belt 11, the meandering of the net belt 11, and the like are adjusted by the belt adjustment units 7a and 7b. When the driving of the net belt 11 is started, the driving of the driving roller 18 composed of a motor pulley is started.
The net belt 11 in contact with the rubber layer 19 of FIG. 8 moves in the rotation direction of the drive roller 18 due to the frictional force with the rubber layer 19, and the driving of the net belt 11 is started. Here, the net belt 11 is driven to travel between the belt guide portions 9 formed at both ends of the driven roller 8 and the tension roller 17 while abutting both side portions of the net belt 11 against the belt guide portions 9, and the belt guides. In the section 9, the meandering of the net belt 11 is corrected.

As described above, the net conveyor according to the first embodiment has the following functions. a. The drive roller is made of any one of chloroprene rubber (CR), styrene-butadiene rubber (SBR), hydrogenated nitrile rubber (HNBR), and fluoro rubber (FKM), which have rebound resilience, wear resistance, and heat aging resistance. Since the rubber layer includes the rubber layer, the frictional force between the net belt and the driving roller has an effect that the driving of the net belt can be driven along with the rotation of the driving roller. b. Since the driven roller and the tension roller are formed of a stainless steel metal roller, the frictional force with the net belt at the time of driving the running of the net belt can be reduced, and the running resistance of the net belt can be reduced. c. Both ends of the driven roller and the tension roller have ridged belt guides, and the net belt is disposed between the belt guides. Has an effect that the meandering of the net belt can be prevented. d. Since the thickness of the rubber layer of the drive roller is 5 mm, the frequency of replacement of the drive roller due to the wear of the rubber layer can be reduced, and the operation of mounting the drive roller on the drive roller can be facilitated. e. Since the upper end of the belt guide portion is formed at a height substantially flush with the upper surface of the net belt, both sides of the net belt can contact the belt guide portion to prevent meandering of the net belt, and This has the function of preventing articles conveyed on the belt from colliding with the belt guide portion. f. Since the driven roller is supported by the end of the auxiliary frame which is detachably mounted on one end of the frame, the auxiliary frame is stretched between the driven roller and the drive section only by rotating the auxiliary frame upward. The net belt can be loosened and the legs have a substantially L-shape and have an opening, so that the net belt can be easily detached from the opening. g. Since the auxiliary frame is detachably provided at one end of the frame, the auxiliary frame can be removed from the frame and the auxiliary frame, the driven roller, and the like can be washed.

(Embodiment 2) A net conveyor according to Embodiment 2 of the present invention will be described below with reference to the drawings. FIG. 5 is an overall perspective view of the net conveyor according to the second embodiment. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In FIG. 5, 20
Is a net conveyor according to the second embodiment, 21 is a driven roller composed of a rotatable stainless steel metal roller having a roller shaft 21a inserted into the roller bearing 6 of the auxiliary frame 3, and 22 is the other end of the frames 2a and 2b. A roller support plate fixed to the portion or rotatably fixed in the same manner as the auxiliary frame 3; 23, a convex guide plate protruding from the frames 2a, 2b toward each side of the net belt 11; A guide portion made of a synthetic resin such as a substantially U-shaped copolymer polyacetal, ultra-high-molecular-weight polyethylene, and Newlite (made by Newlite) fitted to the guide plate 23, and 25 is below the frames 2a and 2b. Roller support portion disposed in the
Reference numeral 6 denotes a rotatable belt supporting roller which is detachably supported by a roller supporting portion 25 and supports the net belt 11, 27 denotes leg portions of the net conveyor 20, and 27a and 27b denote leg portions 27.
27c is a lateral leg connecting the lower ends of the legs 27a and 27b, 27d is a transverse member orthogonal to the frames 2a and 2b and fixing the leg 27a of the leg 27 to the frame 2a side, 28 An opening member whose lower end is rotatably attached to a shaft attachment portion (not shown) at the upper end of the standing leg portion 27b and whose upper end is detachably locked to a projection 28a projecting from a side portion of the frame 2b. , 28b are formed in the opening member 28 in the form of cutouts.
This is a locking portion that is detachably locked to a. Here, in the second embodiment, the guide portion 24 is formed at a height such that the upper end portion is substantially flush with the upper surface of the net belt 11. Further, instead of protruding the projection 28a on the frame 2b, the horizontal member 27d may be penetrated through the frame 2b to serve also as the projection 28a. In addition, the standing legs 27a, 2
Instead of connecting the legs 7b, the legs 27a and the legs 27b may be connected to each other in the longitudinal direction of the frames 2a and 2b to reinforce the legs 27.

The operation of the net conveyor according to the second embodiment configured as described above will be described below with reference to the drawings. FIG. 6 is a perspective view showing a state in which the net belt of the net conveyor according to the second embodiment is detached. In FIG. 6, reference numeral 29 denotes an opening formed below the frame 2b when the locking portion 28b of the opening member 28 is removed from the projection 28a. When removing the net belt 11 from the net conveyor 20, the screws and the like of the frame fixing portion 5 are loosened to release the fixing of the auxiliary frame 3, and as shown in FIG. 6, the auxiliary frame 3 is turned upward around the frame protrusion 4b. Move to loosen the net belt 11. Next, as shown in FIG. 6, the locking portion 28b of the opening member 28 is removed from the projection 28a to form an opening 29 below the frame 2b.
Is pulled out from the opening 29 and removed from the net conveyor 20. After removing the net belt 11, the frame 2
a, 2b, auxiliary frame 3, each roller 18, 21,
6, the net belt 11 and the like are each washed. When attaching the net belt 11 to the net conveyor 20, the net belt 11 is moved from the opening 29 below the frame 2b to the frames 2a, 2b while the auxiliary frame 3 is rotated upward.
Is mounted between the guide portions 24 formed on the
In addition, the belt support roller 26 supports the lower portion of the net belt 11 between the driving rollers 18. Next, the locking portion 28b of the opening member 28 is locked to the protrusion 28a,
The auxiliary frame 3 is rotated downward around the frame protrusion 4b to fix the auxiliary frame 3 to the frames 2a and 2b by the frame fixing portion 5, and the net belt 11 is connected to the driven roller 2
1 and the drive roller 18 so that the belt adjusting portion 7a
With this, the tension and meandering of the net belt 11 are adjusted. When the driving of the net belt 11 is started, when the driving of the driving roller 18 composed of a motor pulley is started, the net belt 11 in contact with the rubber layer 19 of the driving roller 18 is driven by the frictional force with the rubber layer 19. , And the driving for driving the net belt 11 is started. Here, the net belt 11 is disposed between the guide portions 24 formed on the frames 2a and 2b, and is driven to run while abutting both sides of the net belt 11 against the guide portions 24. Eleven meanders are corrected.

As described above, since the net conveyor according to the second embodiment is configured, it has the following operation in addition to the operation described in the first embodiment. a. Since the guide portion made of synthetic resin fitted to the guide plate protruding from the frame is provided, both sides of the net belt are guided by the guide portions when the net belt disposed between the guide portions is driven to travel. Has the effect of preventing meandering of the net belt. b. It has a low friction coefficient and wear resistant copolymer polyacetal, ultra high molecular weight polyethylene, and synthetic resin guide such as Newlite (manufactured by Newlite). The frictional force can be reduced, the running resistance of the net belt can be reduced, and the noise at the time of running the net belt can be reduced. c. Since the legs are provided with a detachable opening member on the frame, the opening can be formed below one side of the frame simply by removing the opening member from the frame, and the net belt is pulled out from the opening. Therefore, the net belt can be easily attached and detached.

(Embodiment 3) A net conveyor according to Embodiment 3 of the present invention will be described below with reference to the drawings. FIG. 7 is an overall perspective view of the net conveyor according to the third embodiment, and FIG. 8 is a cross-sectional side view of a main part of a driving unit of the net conveyor according to the third embodiment. Note that the same components as those of the second embodiment are denoted by the same reference numerals, and description thereof is omitted. 7, reference numeral 30 denotes a net conveyor according to the third embodiment, 31 denotes a driven roller made of a rotatable stainless steel metal roller having a roller shaft 31a mounted on a roller bearing 6 of the auxiliary frame 3, and 32 denotes a driven roller 31. An engagement groove 33 formed in a concave strip on an outer peripheral surface of the drive roller 33 is a drive roller composed of a motor pulley fixed to the roller support plate 22.
Reference numeral 4 denotes a chloroprene rubber (CR) having a thickness of about 5 mm and a styrene-butadiene rubber (SB) having rebound resilience, abrasion resistance, and heat aging resistance mounted on the outer peripheral surface of the drive roller 33.
R), a rubber layer made of any one of hydrogenated nitrile rubber (HNBR), fluorine rubber (FKM), and the like. Reference numeral 35 denotes an engagement groove formed in a concave strip on the outer peripheral surface of the rubber layer 34 of the drive roller 33. is there. In FIG. 8, reference numeral 36 denotes an endless net belt which is stretched between the driven roller 31 and the driving roller 33 and is formed in a mesh shape by a linear body such as a wire. The guide projection is engaged with the grooves 32 and 35. Here, as the guide protrusion, a ridge formed linearly in the length direction on the lower surface of the net belt 36 or a protrusion formed at a predetermined interval is used.

As described above, since the net conveyor according to the third embodiment is constituted, the first or second embodiment is used.
In addition to the functions described in the above, the following functions are provided. a. Guide projections projecting from the lower surface of the net belt,
Since it is engaged with the engagement groove formed on the outer peripheral surface of the driven roller or the driving roller, it has an effect of preventing the net belt from meandering when the net belt is driven to travel. b. Since the rubber layer of the drive roller is formed with a thickness of about 5 mm, it has an effect that an engagement groove large enough to engage the guide protrusion can be formed in the rubber layer.

[0020]

As described above, according to the net conveyor of the present invention, the following excellent effects can be realized. According to the first aspect of the present invention, (1) a rubber layer having rebound resilience, abrasion resistance, and heat aging resistance is provided on the outer peripheral surface of the drive roller. The net belt can be driven to travel reliably by the frictional force of the layer, and even when moisture or the like adheres to the rubber layer, the net belt can be driven to travel without slipping, thereby driving the net conveyor. Excellent reliability. (2) Since a rubber layer having rebound resilience, wear resistance and heat aging resistance is provided, the durability of the drive roller can be improved, the frequency of replacement of the drive roller can be reduced, and the usability is improved. The net belt can be driven and driven simply by forming the rubber layer on the outer peripheral surface of the roller, and the structure is simple, the productivity is excellent, the maintenance is excellent, and the hygiene management by HACCP can be improved. (3) CR, HNBR, FKM, CSM, CM on rubber layer
In the case of using, for example, the drive roller can be sterilized with hot water or alkali, and the hygiene controllability by HACCP can be improved. (4) Since the driven roller has a belt guide portion formed in a ridge or a projection shape at both ends in the axial direction, both sides of the net belt are brought into contact with the belt guide portion to prevent meandering of the net belt. Can be excellent in running stability of the net belt. (5) When the driven roller is formed of a metal roller such as stainless steel, the frictional force between the driven roller and the net belt can be reduced, the running resistance of the net belt can be reduced, and the overload on the driving roller can be prevented. The durability of the net conveyor can be improved. (6) The net belt is driven to travel by the frictional force between the rubber layer mounted on the outer peripheral surface of the drive roller and the net belt, and the belt guide portion of the driven roller prevents the net belt from meandering. The driving roller does not require a belt guide portion formed in a ridge or a projection shape, so that the number of parts of the driving roller can be reduced, and the net conveyor is excellent in productivity and maintainability with a simple structure. According to the second aspect of the invention, in addition to the effects of the first aspect, (7) the frequency of replacement due to abrasion of the rubber layer of the drive roller can be reduced, and the drive roller is excellent in durability and usability. The workability of attaching the rubber layer to the drive roller can be improved, and the productivity is excellent. (8) The net belt can be sufficiently engaged with the rubber layer, the drive belt can reliably drive the net belt, and the net belt can be prevented from slipping when the net belt is driven. Excellent driving stability. According to the third aspect of the present invention, in addition to the effects of the first or second aspect, (9) the net belt can be driven to travel while the both sides of the net belt are in contact with the synthetic resin guides, Belt meandering can be reliably prevented, and the running stability of the net belt is excellent. (10) Since the guide portion is made of synthetic resin,
The frictional force between the both sides of the net belt can be reduced, the running resistance of the net belt can be reduced, and the noise at the time of running the net belt can be reduced. According to the fourth aspect of the invention, in addition to the effects of the first to third aspects, (11) the net belt is driven to travel by securely contacting both side portions of the net belt with the belt guide portion and the guide portion. Thus, meandering of the net belt can be reliably prevented, and articles conveyed on the net belt can be prevented from colliding with the belt guide portion or the guide portion, and the usability is excellent. According to the fifth aspect of the present invention, in addition to the effects of the first to fourth aspects, (12) an auxiliary frame which is disposed at one end or both ends of the frame so as to be rotatably mounted on a shaft or to be detachable. Have
Since the driven roller is attached to the auxiliary frame, the tension of the net belt can be reduced simply by rotating the auxiliary frame above the frame. The hygiene of the net conveyor can be improved. (13) Since the auxiliary frame can be easily removed from the frame, the auxiliary frame can be washed,
The hygiene management by HACCP can be improved. According to the sixth aspect of the invention, in addition to the effects of the first to fifth aspects, (14) the net belt can be easily attached and detached from the open portion on the side of the frame, and the workability of attaching and detaching the net belt can be improved. In addition, the net belt and the frame can be easily washed and the like, and the maintenance and hygiene are excellent, and the hygiene management by HACCP can be improved. According to the seventh aspect of the invention, in addition to the effects of the first to sixth aspects, (15) a guide projection is provided on the lower surface of the net belt, and a guide projection is provided on the rubber layer of the drive roller and the driven roller. Since the engagement portion has an engagement groove, the guide protrusion is engaged with the engagement groove during traveling driving of the net belt, thereby preventing the meandering of the net belt and improving the running stability of the net belt. Excellent.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a net conveyor according to a first embodiment.

FIG. 2 is a cross-sectional side view of a main part of the net conveyor according to the first embodiment.

FIG. 3 is an exploded perspective view of a main part of a driving unit of the net conveyor according to the first embodiment.

FIG. 4 is a perspective view of the net conveyor according to the first embodiment when the net belt is attached and detached.

FIG. 5 is an overall perspective view of a net conveyor according to a second embodiment.

FIG. 6 is a perspective view showing a state in which a net belt is detached from a net conveyor according to the second embodiment.

FIG. 7 is an overall perspective view of a net conveyor according to a third embodiment.

FIG. 8 is a cross-sectional side view of a main part of a driving unit of a net conveyor according to a third embodiment.

[Explanation of symbols]

 1, 20, 30 Net conveyor 2a, 2b Frame 2c Frame connection part 3 Auxiliary frame 4a Frame engagement part 4b Frame projection part 5 Frame fixing part 5a Frame fixing groove part 6 Roller bearing part 7a, 7b Belt adjustment part 8, 21, 31 Followed rollers 8a, 17a, 21a, 31a Roller shaft 9 Belt guide unit 10 Drive unit 11, 36 Net belt 12a Rail fitting unit 12b Belt support rail 13, 27 Leg 13a, 29 Opening 13b, 27a, 27b Stand 13c , 27d Horizontal members 13d, 27c Lateral legs 14a, 14b Driving support plate 15 Shaft supporting portion 16 Shaft locking portion 17 Tension roller 18, 33 Driving roller 19, 34 Rubber layer 22 Roller supporting plate 23 Guide plate 24 Guide portion 25 Roller support part 26 Belt support roller 28 Open part Material 28a Projection 28b Locking part 32, 35 Engagement groove 37 Guide projection

Claims (7)

[Claims] 1. A frame, a driven roller rotatably supported at one end or both ends of the frame, a driving portion disposed at the other end or lower portion of the frame, and a tension member provided between the driven roller and the driving portion. Endless net belt,
A drive roller pivotally supported by the drive unit, a rubber layer having rebound resilience, abrasion resistance, and heat aging resistance mounted on an outer peripheral surface of the drive roller; A belt guide formed at both ends of the roller in the axial direction in the form of a ridge or a protrusion. 2. The driving roller according to claim 1, wherein the rubber layer has a thickness of 3 mm.
The net conveyor according to claim 1, wherein the net conveyor is formed to a thickness of 10 to 10 mm, preferably 5 to 8 mm. 3. A guide plate provided on the frame toward the side of the net belt instead of the belt guide portion, and a guide portion made of synthetic resin fitted on the guide plate. 3. The method according to claim 1, further comprising:
Net conveyor described in the above. 4. The belt guide portion and an upper end portion of the guide portion are d / 2 mm to 10 mm, preferably 0, of a thickness (d) of the net belt from an upper surface of the net belt.
The net conveyor according to any one of claims 1 to 3, wherein the net conveyor is formed to be higher by 10 mm, more preferably 0 mm to 3 mm. 5. The apparatus according to claim 1, wherein the driven roller is pivotally supported by an auxiliary frame disposed at one end or both ends of the frame so as to be vertically rotatably mounted or detachably mounted. 4. The net conveyor according to claim 1. 6. The net conveyor according to claim 1, further comprising a leg having an opening for attaching and detaching the net belt on one side of the frame. . 7. An engagement groove formed on the outer peripheral surface of the rubber layer of the drive roller and the driven roller on the same line as a concave line, and is engaged with the engagement groove protruding from a lower surface of the net belt. 7. The net conveyor according to claim 1, further comprising: a guide protrusion that performs the guide operation. 8.