JP2007223775A - Conveyor and pulley used for conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conveyor capable of conveying foods smoothly and sanitarily. <P>SOLUTION: This conveyor has a pair of disc-like members 22 rotatable around the same central axial line A of rotation and provided at an interval from each other, a pair of pulleys 14 having a plurality of rollers 24 arranged at an equal interval and supported on circles B having the same radii on respective mutually opposing faces 23 of the pair of disc-like members 22 and allowing each roller 24 to rotate around an axial line being parallel with the central axial line A of rotation of the pulley 14, a pair of endless belts 12 stretched over the corresponding pulleys 14 and allowing each of them to have a plurality of teeth 42 engaged with rollers 24 of the corresponding pulleys 14, and an article conveyance member 20 arranged between the pair of endless belts 12 and connected with the endless belts 12 to load and convey articles such as food materials. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a conveyor, and more particularly, to a conveyor suitable for use in bread making and the pulley thereof.

For example, in bread production, bread dough is placed on a conveyor and subjected to various processes such as a rounding process, a fermentation process, a baking process, and the like. (See Patent Documents 1 and 2).
Japanese Patent Laid-Open No. 08-294351 Japanese Patent Laid-Open No. 09-140319

  As such a conveyor, an endless metal chain set parallel to the left and right, a sprocket on which the chain is hung, and a metal chain set and connected at a certain interval in the movement direction of the metal chain are connected. It is known that a food basket such as bread dough is placed and conveyed in the basket.

  However, in such a conveyor, metal powder is generated due to friction between the chain and the sprocket, and oil from the chain lubricating oil is generated. There is a risk of causing problems such as adhering to and depositing on the sprocket and mixing it as a foreign substance in the food that is peeled off and conveyed.

  In order to solve such a problem, a conveyor using a resin toothed endless belt and a toothed pulley, which is usually called a timing belt and a timing pulley, is also conceivable without using a metal chain. . However, in the timing pulley, food powder accumulates in the groove between teeth, preventing proper meshing between the belt and the pulley, causing belt skipping and pulsation, and stable conveyance. There is a risk that it will not be possible. Furthermore, an unstable behavior may occur when the belt and the pulley are engaged due to a stick-slip (adhesion / slip) phenomenon that is considered to be caused by friction between the belt teeth and the pulley teeth.

  The present invention has been made in view of the above circumstances, enables stable conveyance and can suppress the generation of foreign matter, and in particular, a conveyor suitable for use in a food manufacturing process such as bread, It aims at providing the pulley used for it.

That is, the present invention
A pulley of a conveyor comprising a pulley and a toothed belt engaged with the pulley,
A disk-shaped member that is rotatable about the rotation center axis of the pulley;
A plurality of rollers arranged at equal intervals on the same circle centering on the rotation center axis of the pulley, supported on one side of the disk-like member, and engaged with the teeth of the toothed belt; The pulley is characterized in that each roller is rotatable about an axis parallel to the rotation center axis of the pulley.

  In this pulley, there is no groove between teeth like the timing pulley (toothed pulley) described above, and no food powder accumulates. For this reason, belt tooth skipping and pulsation that have occurred when the timing pulley is used are unlikely to occur, and a stable conveying action is possible. Further, the roller that engages with the teeth of the belt is rotatable, and is rotated when friction occurs due to engagement with the teeth of the belt, so that the stick-slip phenomenon described above can be suppressed. it can.

  Specifically, each of the rollers is rotatably mounted from one side surface of the disk-shaped member around a support shaft that is mounted so as to protrude in parallel to the rotation center axis of the disk-shaped member. It can be a cylindrical roller.

  In addition, the roller may have flanges at both ends in the axial direction for preventing the belt engaged with the roller from coming off.

The present invention also provides
A pair of disk-like members that are rotatable about the same axis of rotation and spaced from each other, and the same surface on each of the pair of disk-like members facing each other A plurality of rollers arranged at equal intervals and supported on a circle of a radius of which each roller has a plurality of rollers rotatable about an axis parallel to the rotation center axis of the pulley A pair of pulleys;
A pair of endless belts hung on corresponding pulleys, each having a plurality of teeth engaged with the rollers of the corresponding pulley;
There is provided an conveyer comprising: an article conveying member which is disposed and connected between the pair of endless belts and carries and conveys an article such as a food material.

  In this conveyor, since the portion of the pulley that is engaged with the teeth of the toothed endless belt is the roller as described above, it is possible to obtain the same effects as those described above for the pulley according to the present invention. .

  Further, as in the case of the pulley according to the present invention described above, each roller rotates around a support shaft attached so as to protrude in parallel to the rotation center axis from one side surface of the disk-shaped member. It can be a cylindrical roller that can be attached, and can further have a flange at each end in the axial direction to prevent the endless belt engaged with the roller from coming off.

  Further, the endless belt can have a root portion between adjacent teeth having the same radius as the roller. Thereby, the stable operation without shakiness is attained.

  Further, the tooth surface from the tooth tip portion to the tooth bottom portion of the endless belt is moved when each roller starts to engage at the tooth tip portion and reaches an engagement position with the tooth bottom portion. It is preferable that the roller has a contour that is displaced while being engaged with the tooth surface while being rotated around the axis of the roller. This is to suppress the stick-slip phenomenon described above.

  The conveyor and pulley according to the present invention are configured as described above, and can suppress the above-described belt tooth skipping, pulsation, and stick-slip phenomenon that have occurred in the prior art. In addition, since contamination with lubricating oil or material powder can be suppressed, food can be transported in a sanitary environment in a food manufacturing process such as bread manufacturing.

  Hereinafter, an embodiment in which the present invention is applied to an endless conveyor used in a puller process in bread manufacture will be described with reference to the accompanying drawings.

  FIG. 1 is a schematic explanatory view showing a part of the endless conveyor 10 and showing the relationship between the toothed endless belt 12 and the pulley 14 in the endless conveyor, FIG. 2 is a partially enlarged view of FIG. 1, and FIG. It is a sectional side view showing the concrete composition of.

  As shown in the figure, the conveyor 10 is rotatable about a rotation center axis A, and a pair of pulleys 14 (one in FIG. 1 and FIG. 3) spaced from each other in the direction of the rotation center axis. The other pulley is provided on the front side of the rotation center axis A when viewed in FIG. 1 and is provided on the left side when viewed in FIG. 3), and a pair of pulleys that are hung on the pulley. A toothed endless belt 12, and a bread dough conveying member 20 disposed between the toothed endless belt 12 and attached to the toothed endless belt 12.

  Each pulley 14 is arranged on a circle B having the same radius on the disk-like member 22 that is rotatable about the rotation center axis A and on the surface 23 of the disk-like member 22 that faces the other pulley. And a plurality of rollers 24 arranged at equal intervals and supported. Each roller 24 is rotatable about an axis C parallel to the rotation center axis A of the pulley 14.

  As shown in detail in FIG. 3, the disk-like member 22 is fixed to a rotating shaft 30 supported by a bearing 28 attached to the frame 26 of the conveyor 10, and the roller 24 is cylindrical. Flange for preventing the belt 12 engaged with the roller from coming off at both ends thereof, which is rotatably mounted on a support shaft 32 fixed in a cantilever manner to the peripheral portion of the disk-shaped member. 34 is formed.

  Each toothed endless belt 12 has a plurality of teeth 42 engaged with the roller 24 of the pulley 14. As shown in FIGS. 1 and 2, the root portion 44 between adjacent teeth 42 has approximately the same radius as the roller 24 engaged therewith. Further, the tooth surface of the tooth 42 from the tip portion 46 to the root portion 44 is engaged with the root portion 44 by the roller 24 starting to engage at the tip portion 46 of the toothed endless belt 12. When displaced to position, the roller 24 is indicated by arrow D around the support shaft 32 of the roller 24 due to engagement with the tooth surface from the tip portion 46 to the root portion 44. Thus, the contour is attached so as to be displaced while being rotated (see FIG. 2).

  The toothed endless belt 12 and the roller 24 are preferably made of a resin that can operate smoothly without supplying lubricating oil. For example, the toothed endless belt is made of urethane resin, and the roller 24 is made of nylon resin. It is said. The toothed endless belt and the roller 24 are preferably made of a material that is difficult to be charged so that floating substances such as flour are difficult to adhere.

  The bread dough conveying member 20 includes a support bar 50 (FIG. 3) that extends horizontally between a pair of toothed endless belts, and a basket 52 that is supported by the support bar and places the bread dough. Engagement pins 54 are provided at both ends of the support bar 50 and are inserted into support holes 56 provided in the toothed endless belt to support the support bar 50 on the toothed endless belt 12. In the example shown in FIG. 1, the support holes 56 are formed in every second tooth 42 of the toothed endless belt 12, and in fact, the dough conveying member 20 is attached to all of the support holes. However, in FIG.1 and FIG.3, only the one part is shown.

  In the example of FIG. 1, the left traveling part of the endless conveyor 12 moves downward and the right traveling part moves upward. As shown in FIG. 2, the toothed endless belt (the left traveling part) When the teeth 42 are started to be engaged with the rollers 24 of the pulley 14, the rollers 24 rotate appropriately on the support shaft 32 by friction with the tooth surface of the left running portion, and the tooth bottoms of the toothed endless belt 12 are rotated. After reaching part 44 and rotated approximately 180 °, it moves away from the pulley and moves upward while appropriately rotating on the support shaft 32 by friction with the teeth of the pulley.

  As described above, in the conveyor using the pulley according to the present invention, it is possible to prevent accumulation of flour, oil, and the like on the pulley, and it becomes possible to smoothly and hygienically convey required articles such as bread dough. .

It is a schematic explanatory drawing which shows a part of endless conveyor which concerns on this invention, and shows the relationship between a toothed endless belt and a pulley. FIG. 3 is an enlarged view of a portion surrounded by a circle II in FIG. 2. It is a cross-sectional side view which shows the attachment state of the pulley of FIG.

Explanation of symbols

Endless conveyor 10; Toothed belt 12; Pulley 14; Rotation center axis A; Bread dough conveying member 20; Disk-like member 22; Surface 23; Circle B; Roller 24; Frame 26; Bearing 28; Flange 34; tooth 42; root portion 44; tooth tip portion 46; support bar 50; basket 52; engagement pin 54;

Claims (8)

A pulley of a conveyor comprising a pulley and a toothed belt engaged with the pulley,
A disk-shaped member that is rotatable about the rotation center axis of the pulley;
A plurality of rollers arranged at equal intervals on the same circle centering on the rotation center axis of the pulley, supported on one side of the disk-like member, and engaged with the teeth of the toothed belt; The pulley is characterized in that each roller is rotatable about an axis parallel to the rotation center axis of the pulley.   Each of the rollers is a cylindrical roller attached rotatably from one side surface of the disk-like member around a support shaft attached so as to protrude in parallel to the rotation center axis. The pulley according to claim 1.   The pulley according to claim 1 or 2, wherein the roller has flanges at both ends in the axial direction thereof to prevent the belt engaged with the roller from coming off. A pair of disk-like members that are rotatable about the same axis of rotation and spaced from each other, and the same surface on each of the pair of disk-like members facing each other A plurality of rollers arranged at equal intervals and supported on a circle of a radius of which each roller has a plurality of rollers rotatable about an axis parallel to the rotation center axis of the pulley A pair of pulleys;
A pair of endless belts hung on corresponding pulleys, each having a plurality of teeth engaged with rollers of the corresponding pulley;
An article transporting member disposed between the pair of endless belts and connected to the endless belt for placing and transporting an article such as a food material.   Each of the rollers is a cylindrical roller that is rotatably mounted around the support shaft that is mounted so as to protrude from the surface of the disk-shaped member in parallel with the rotation center axis. The conveyor according to claim 4.   The conveyor according to claim 4 or 5, wherein the roller has flanges at both ends in the axial direction thereof to prevent the endless belt engaged with the roller from coming off.   The conveyor according to any one of claims 4 to 6, wherein a root portion between adjacent teeth of the endless belt has the same radius as that of the roller. When each roller starts to engage at the tooth tip portion of the endless belt and moves to the position of engagement with the tooth bottom portion, the surface of the tooth from the tooth tip portion to the tooth root portion The tooth surface from the tooth tip portion to the tooth bottom portion is contoured so as to be displaced while being engaged with the rotation of the roller around the axis. The conveyor in any one of thru | or 7.

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