JPH0568945U - Belt conveyor device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent dirt from accumulating on the conveyor belt. [Structure] A plurality of conveyor belts 4 having an endless annular shape are bridged between a pair of main guide pulleys 2 and 3 and driven by a drive mechanism 8. A cleaning tank 15 storing the cleaning liquid is provided in the gantry 1, and the conveyance belt 4 group is guided by the cleaning tank guide pulley 17 so as to be immersed in the cleaning liquid in the cleaning tank 15. A cleaner member 21 is provided that is in contact with a conveyor belt group that moves in the cleaning liquid.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a belt conveyor device including a plurality of conveyor belts.

[0002]

[Prior Art]

 For example, in a plywood manufacturing factory, it is necessary to convey a plywood material with adhesive applied on both sides by a belt conveyor. In such a case, in order to prevent the adhesive from adhering to the conveyor belt as much as possible, a plurality of round belts or the like are often used instead of the belt-shaped flat belt. This is because the use of multiple belts makes it possible to reduce the contact area with the transported object and sufficiently reduce the amount of adhesive that adheres to the belt.

[0003]

[Problems to be solved by the device]

 However, in the conventional belt conveyor device, even if a conveyor belt having a small contact surface area with the object to be conveyed is used as described above, a small amount of dirt such as adhesive adheres to the conveyor belt group. However, there is a problem that it will hinder smooth transportation because it tends to bloat like a snowball.

Therefore, an object of the present invention is to provide a belt conveyor device capable of preventing dirt from accumulating on the conveyor belt.

[0005]

[Means for Solving the Problems]

 The belt conveyor device of the present invention comprises a plurality of endless annular conveyor belts, and a pair of main guide pulleys provided on a pedestal for guiding the conveyor belts so as to be moved in the conveyor direction. And a drive mechanism for moving the transport belt group in the transport direction of the transported object, a cleaning tank storing the cleaning liquid is provided on the mount, and the transport belt group is immersed in the cleaning liquid in the cleaning tank. It is characterized in that it is provided with a cleaning tank guide pulley for guiding the cleaning tank, and a cleaner member for contacting a group of conveyor belts moving in the cleaning solution in the cleaning tank to remove dirt adhering thereto.

In this case, a pulley elevating device for moving the cleaning tank guide pulley up and down and a tension pulley for absorbing a change in tension of the conveyor belt group due to the operation of the pulley elevating device are provided, and the cleaning tank guide pulley is provided. By lowering it, part of the conveyor belt group is immersed in the cleaning liquid in the cleaning tank, and by raising it, part of the conveyor belt group is removed from the cleaning liquid in the cleaning tank. Good.

[0007]

[Action]

 When the drive mechanism operates, the transport belt group is moved in the transport direction of the transported object. This transport belt group is guided by the cleaning tank pulley and is passed through the cleaning liquid in the cleaning tank until it is fed from one main guide pulley and returned to the other main guide pulley. Then, in this cleaning tank, since it contacts the cleaner member while being immersed in the cleaning liquid, the dirt adhering thereto is sufficiently removed and returns to the main guide pulley side.

[0008]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a gantry 1 has a rectangular box shape and is provided with casters 1a on its lower surface so as to be movable. A pair of roller-shaped main guide pulleys 2 and 3 are rotatably attached to. Between the main guide pulleys 2 and 3, a plurality of endless annular conveyor belts 4 made of a rubber round belt are spanned so as to extend in a substantially horizontal direction, such as a plywood material coated with an adhesive. The object to be conveyed is conveyed from the right side to the left side as indicated by arrow A in the figure. A motor 5 is fixed to the bottom of the gantry 1, and its rotation is transmitted to one of the main guide pulleys 2 via a speed reduction mechanism 6 and a chain 7. Therefore, the motor 5, the speed reduction mechanism 6 and the chain 7 constitute a drive mechanism 8 for moving the group of conveyor belts 4. When the motor 5 is energized, the conveyor belt 4 is viewed from the right side in the figure on the upper surface. Move it to the left. A plurality of support rollers 9 are rotatably provided below the group of transport belts 4 on which the transported object is placed.

On the other hand, first to third roller pulleys 10 to 12 are rotatably attached to the upper part of the gantry 1, and are located below the first and second roller pulleys 10 and 11. Then, the tension pulley 13 is provided. The tension pulley 13 is supported by a linear bearing 14 fixed to the mount 1 so as to be vertically movable, and is constantly urged downward by a tension spring (not shown).

A cleaning tank 15 is placed below the second and third roller pulleys 11 and 12 on the bottom plate of the frame 1. This cleaning tank 15 can store water corresponding to a cleaning liquid for an adhesive for plywood such as vinyl acetate. A caster (not shown) is attached to the bottom of the cleaning tank 15 and the handle 15a can be pulled out. The cleaning tank 15 can be taken out of the gantry 1 through the opening formed in the side plate 1 a of the gantry 1.

Two cleaning tank guide pulleys 17 are rotatably provided in a rectangular frame 16 above the cleaning tank 15. As shown in FIG. In this case, the tension pulley 13 and the cleaning tank guide pulley 17 are passed under the tension pulley 13. The frame body 16 supporting the cleaning tank guide pulley 17 is supported by the gantry 1 so as to be movable up and down. When the frame body 16 is lowered, the cleaning tank guide pulley 17 enters the cleaning tank 15. When the frame body 16 is raised, the cleaning tank guide pulley 17 comes out of the cleaning tank 15. A rack 18 is vertically fixed to the frame body 16, and a pedestal 1 is provided with a pinion gear 19 that meshes with the rack 18. The pinion gear 19 is a handle provided on a side portion of the pedestal 1. It can be rotated by 20. Therefore, the handle 20, the pinion gear 19 and the rack 18 are provided with a cleaning tank guide pulley 17, a descending position where a part of the conveyor belt 4 group is immersed in the water in the cleaning tank 15, and a cleaning position. A pulley elevating device 20 is arranged to move up and down between the cleaning belt 15 and the ascending position where the transport belt 4 group comes out of the water in the cleaning tank 15.

Further, the frame 16 is located between the two cleaning tank guide pulleys 17 and above the pulley 17 on the side where the conveyor belt 4 exits from the cleaning tank 15. The respective cleaner members 21 and 22 are attached. Each cleaner member 21, 22 has a structure as shown in FIG. That is, the felt 24 is attached to one surface of the substrate 23, a pair of the felts 24 are provided, and the substrates 23 are fastened to each other with the screws 25, so that the conveyor belt 4 is sandwiched between the felts 24.

Next, the operation of the above configuration will be described. For example, when conveying an object to be conveyed such as a plywood material coated with an adhesive, water is stored in the cleaning tank 15 and set in the pedestal 1, and the handle 20 is rotated to rotate the frame 16 or The cleaning tank guide pulley 17 is lowered so that part of the conveyor belt group 4 is immersed in the water in the cleaning tank 15. At this time, as the cleaning tank guide pulley 17 descends, the tension of the transport belt 4 group tends to increase. However, in this case, the tension pulley 13 moves upward while being guided by the linear bearing 14 against the pulling force of the tension spring, so that the tension of the transport belt 4 group is kept substantially constant.

After that, when the foot switch is turned on to start the motor 5, the main guide pulley 2 is driven and the group of conveying belts 4 moves in the direction of arrow A shown in FIG. Then, the conveyance belt 4 group fed from the main guide pulley 2 side includes the first roller pulley 10, the tension pulley 13, the second roller pulley 11, the both cleaning tank guide pulleys 17 and the third cleaning pulley. Pass through the roller pulley 12 in order and return to the main guide pulley 3 side. Then, when this group of transport belts 4 passes between the cleaning tank guide pulleys 17, it is immersed in the water in the cleaning tank 15 and, in this state, passes through between the felts 24 of the first cleaner member 21 and is further submerged in water. After exiting from, it passes through between the felts 24 of the second cleaner member 22. Therefore, even if the adhesive adheres to the surface of the conveyor belt 4 as the conveyed object is conveyed, a part of the adhesive is washed away in the water in the cleaning tank 15, and the rest is the first cleaner member 21. The felt 24 is scraped off and completely removed. Water drops on the wet conveyor belt 4 are wiped off by the felt 24 of the second cleaner member 22, and when the conveyor belt 4 returns to the upper surface of the gantry 1 and is involved in the conveyance of the object to be conveyed, it is sufficiently dried. When the water in the cleaning tank 15 becomes dirty, the cleaning tank 15 may be pulled out from the gantry 1 to discard the dirty water and be replaced with new water.

When carrying an object to be conveyed of a type in which dirt does not adhere to the conveyor belt 4 group, the handle 20 is rotated to raise the frame body 16 and thus the cleaning tank guide pulley 17 to convey the object. It is also possible to operate with the group of belts 4 out of the water in the cleaning tank 15. Even in this case, the transport belt group 4 is always cleaned by removing the dirt by the first and second cleaner members 21 and 22.

As described above, according to this embodiment, even if the adhesive is attached to the conveyor belt 4, the adhesive is sufficiently removed in the cleaning tank 15 while the adhesive is circulated. Therefore, it is possible to prevent the situation where the adhesive adhered to the conveyor belt group gradually enlarges like a snowball and finally hinders the smooth conveyance of the transported object.

In the above embodiment, the belt conveyor device used for conveying the plywood material is exemplified, but according to the present invention, it is possible to prevent dirt from accumulating on the conveyor belt. It can be applied to various applications, such as application to a transportation system in a food factory where is required. The cleaning liquid stored in the cleaning tank is not limited to water, and other cleaning liquids such as organic solvents may be used depending on the type of dirt adhering to the conveyor belt.In this case, the cleaning tank should be closed. By doing so, volatilization of the organic solvent can be prevented and the environment can be protected.

In addition, the cleaner member is not limited to the felt type shown in the above embodiment, but may be, for example, a brush type. Further, a plurality of cleaner members may be provided, the second cleaner member 22 in the above embodiment may be omitted, and a drying device for the conveyor belt may be additionally provided. The present invention can be implemented with various modifications within the scope of the invention.

[0019]

[Effect of the device]

 As described above, according to the present invention, it is possible to remove dirt from the circulating conveyor belt at all times, and thus it is possible to prevent dirt from accumulating on the conveyor belt, which is an excellent practical effect. ..

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention with a part of a side plate removed.

FIG. 2 is a perspective view showing the vicinity of a cleaning tank guide pulley.

FIG. 3 is a partial perspective view of a cleaner member.

FIG. 4 is an overall perspective view

[Explanation of symbols]

1 is a mount, 2 and 3 are main guide pulleys, 4 is a conveyor belt, 5 is a motor, 8 is a drive mechanism, 13 is a tension pulley, 15 is a cleaning tank, 16 is a frame, 17 is a cleaning tank guide pulley, Reference numeral 20 is a pulley lifting device, and 21 and 22 are cleaner members.

Claims (2)

[Scope of utility model registration request] 1. A plurality of conveyor belts having an endless annular shape, a pair of main guide pulleys provided on a gantry for guiding the conveyor belt group so as to be moved in a conveyor direction of an object to be conveyed, A drive mechanism for moving the transport belt group in the transport direction of the transported object, a cleaning tank provided on the gantry for storing cleaning liquid, and the transport belt group fed from the one main guide pulley and the other main guide. It contacts the cleaning tank guide pulley that guides the conveyor belt so that it is immersed in the cleaning liquid in the cleaning tank and the conveyor belt group that moves through the cleaning liquid in the cleaning tank until it returns to the pulley. A belt conveyor device comprising a cleaner member for removing dirt adhering thereto. 2. The cleaning tank guide pulley is located in the cleaning tank so that a part of the conveyor belt group is soaked in the cleaning liquid in the cleaning tank, and the cleaning pulley is moved out of the cleaning tank. And a pulley elevating device that moves the conveyor belt group up and down between the ascending position where the conveyor belt comes out of the cleaning liquid in the cleaning tank, and the pulley elevating device that is provided to the frame by urging it in one direction. 2. A tension pulley that absorbs a change in tension of the transport belt group due to operation.
The belt conveyor device described.