JPH0330325Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a conveyor for changing the route used, for example, when changing the route when transporting products in a production line.

Roller conveyors, belt conveyors, etc. are generally used to transport objects. Among these, roller conveyors cannot transport objects unless they are tilted, and there is no other way to reliably control the moving speed of the object than by controlling the speed of movement of the object by changing the angle of inclination. I couldn't go. Furthermore, when conveying an object using a belt conveyor, the belt conveyor is driven by a motor, so the conveyance speed of the object can be controlled relatively easily. but,
When this belt conveyor is used for product management or product processing, multiple objects are conveyed at the same time by the belt, so it can be used to remove rejected products or carry out necessary processing operations. If the object to be processed is temporarily stopped, the preceding object is pushed by the following object and tilts, causing the product to become confused on the belt.

Moreover, these conventional conveyors require a large number of interlocking devices and installation space, and have the disadvantage of generating noise.

As a conveyor device which improves these drawbacks, there is an invention as described in Japanese Patent Publication No. 16932/1983, for example. As shown in FIGS. 1 and 2, the present invention includes one common drive shaft b that rotates in accordance with the driving force of a motor a, and a drive belt c that is driven by the rotation of the drive shaft b. A rotating shaft e is loosely inserted into a plurality of divided cylindrical rollers d arranged in a row so as to contact a part of the inner circumference thereof and rotate by friction.
It is a linear conveyor formed from When the motor a rotates, the common drive shaft b rotates via a drive means such as a belt or a pulley. This rotation is then transmitted to the drive belt c and the rotating shaft e
By rotating the rollers, a plurality of rollers d, some of which are in contact with the rotation axis e, are rotated by friction, and the object f on the rollers d is transported.

According to this conventional conveyor, when controlling a product or stopping a desired row of objects f, the rotating shaft e idles with respect to a large number of rollers d on which the objects f are placed, so that the objects f are moved to the rollers d. The following object f also hits the preceding object f and is stationary on the rollers d without tipping and disrupting the products being conveyed like a conventional belt conveyor. This allows checking for defective products and processing the products. Furthermore, the objects f in the row that are not stopped are rotated by friction with the rotating shaft e, so they can be freely transported.

However, this conventional conveyor requires a special sorting device with a complicated mechanism when changing the path of the object f on the conveyor. Therefore, it takes time and effort to sort the articles, and the cost of the apparatus itself increases.

The present invention was developed in view of the above-mentioned points, and its purpose is to provide a simple structure that can reliably change the path of an object in a short period of time and is almost similar to a conveyor that creates a straight path. Therefore, we provide a route change conveyor that is inexpensive, easy to maintain such as roller replacement, and reliable. Moreover, when changing the route from the first straight passage to the second straight passage, the goods in the first straight passage are To provide a route changing conveyor equipped with a corner portion that allows articles to be moved to a second straight path without changing the position in the front-rear direction.

The details of one embodiment of the present invention are shown in Figures 3 to 5 below.
Set up according to the diagram. In each figure, the same parts as in FIGS. 1 and 2 are designated by the same reference numerals.

This embodiment basically consists of straight lines A ₁ and A ₂
It is provided at the corner B where the two intersect. That is, its structure is approximately the same as the two straight lines A ₁ and A ₂ , and the corner where the two lines A ₁ , which is the first passage, and line A ₂ , which is the second passage, intersect. The corner portion includes a plurality of corner rotation shafts 3 having a length equal to or greater than the width of line A ₁ and line A ₂ and installed at 45 degrees with respect to line A ₁ and line A ₂ ; In the triangular part between the axis of rotation e of line A ₁ and the axis of rotation 3a of the corner part and the axis of rotation e of line A ₂ and the axis of rotation 3b of the corner part, the line A ₁ is in the triangular part on the line A ₁ side. The triangular part on the line A ₂ side is parallel to the axis of rotation e of line A ₂ ,
A plurality of pieces whose lengths are gradually shortened as they reach the rotation axes 3a and 3b at the corner, each of which is 6 pieces in this embodiment.
Book rotation axes 3c and 3d are arranged. A common drive shaft 2 is arranged in a direction perpendicular to a diagonal line X where these two lines A ₁ and A ₂ intersect, and rotates according to the driving force of a motor 1;
A plurality of, for example four, rotation axes 3 arranged in the direction
A drive belt 5 is wound around the drive main shaft 2 and a pulley 4 provided at the end of the rotating shaft 3 in order to transmit the signal to the inner periphery. It is formed from a plurality of cylindrical rollers 6 that are divided and arranged in a row so that at least a part of the rollers 6 are in contact with each other to cause friction. The main drive stage 7 for rotating the main drive shaft 2 following the rotation of the motor 1 includes, for example, a chain 10 between a sprocket 8 installed on the motor shaft 1a of the motor 1 and a sprocket 9 of the main drive shaft 2. It is formed by winding.
Further, the rotating shaft 3 is rotatably installed on the chassis F of the lines A ₁ and A ₂ on the same horizontal plane. This roller 6 and the rotating shaft 3 of the triangular part
The rollers 6a and 6b loosely inserted in the lines A1 and A2 may be formed to have the same diameter as the rollers d used for the linear lines _A1 and _A2 , or the drive shaft 2 and the pulleys 4 and 4'; Cylindrical rollers 6, 6' of different sizes and diameters are formed with respect to the rotating shafts 3, 3', which are wound in different directions between the rollers 4 and 4' so that the mutual rotation directions are different from each other. It is also possible to use a loosely inserted one.

An embodiment of the present invention has the above-mentioned configuration, and the object f is transported as follows, and the object f is transported along the line.
If you change the route of goods from line A ₁ to line A ₂ ,
The front and rear positions of the article f with respect to the traveling direction are moved without being changed due to the configuration of the corner portion of the present invention.

First, in FIG. 2, motor a rotates and this rotation is transmitted to drive main shaft b via sprocket g, chain h, and sprocket i, so that a plurality of drive belts wound around drive main shaft b c.
The respective rotating shafts e installed on the chassis f are rotated through the respective rotating shafts e. In this case, along with the rotation of the rotation axis e, the rotation axes 3c and 3d of the triangular portion are also rotated at the same time. Therefore, the cylindrical roller d, which is loosely inserted so that a part of its inner periphery contacts the rotating shaft e, receives the load of the article and rotates due to friction with the rotating shaft e. Therefore, the object f placed on the roller d is conveyed on the straight line _A1 . In this case, if the object f in a desired row is to be stopped due to the necessity of product management or product processing, this object f can be placed by simply pressing the object f lightly, without requiring any special equipment. Since the rotating shaft e, which is loosely inserted inside each of the many rollers d, is rotated idly, the object f is kept stationary on the roller d on which it is placed, and the succeeding object f is also similar to the preceding object. It presses against f and stands still on roller d without tilting. The objects f to be conveyed are therefore not confused as in conventional belt conveyors. This makes it possible to check for defective products and process the products. Furthermore, the objects f in the rows that are not stopped are freely transported.

To change the path of the object f to be transported, for example, by 90 degrees with respect to the straight line _A1 , the motor 1
rotates and this rotation is transmitted to the drive main shaft 2 via the sprocket 8, chain 10, and sprocket 9. A rotating shaft 3 arranged parallel to the diagonal line X at the point where the straight lines A ₁ and A ₂ meet is connected to the motor 1 through
It is rotated following the rotation from . Therefore, since the plurality of divided and arranged cylindrical rollers 6, which are partially in contact with these rotational shafts 3, are rotated by friction, the object f placed on these rollers 6 is in a straight line. With respect to line _A1 , the course is naturally changed by about 90° and transported without using any large-scale special sorting equipment or equipment.

In this case, as in the case of the straight line _A1 , if the objects f in a desired row on the rollers 6 are to be stopped due to the necessity of product management or product processing, the objects f can be stopped without installing a large-scale special sorting device or equipment. f
By simply holding down the object f, the rotating shaft e, which is loosely inserted inside the many rollers 6 on which the object f is placed, is rotated idly.
is held still on a desired row of rollers 6, and the succeeding object f also comes to rest without being pressed against the preceding object f and tilted. This makes it possible to prevent the objects f to be transported from being confused. Further, since the rollers 6 in the other rows are rotated by friction with the rotating shaft 3, the objects f can be conveyed in multiple rows at the same time. Furthermore, when the rollers 6 or the rotating shaft 3 need to be replaced, the rotating shaft 3 can be easily attached and detached from the chassis F and replaced, and the rollers 6, which are divided and arranged in rows, can be easily inserted and removed from the rotating shaft 3. This makes it easy to replace only the parts of the roller 6 that require replacement, which makes maintenance and management more reliable, improves product reliability, and lowers costs.

Further, as shown in FIG. 5, when the winding directions of several drive belts 5 wound around the pulley 4 from the drive main shaft 2 are wound in opposite directions, the rotating shafts 3, 3', 3 , 3' are opposite to each other, but unlike the rotation direction of the large diameter roller 6, the small diameter roller 6' does not take part in conveying the object f, but the large diameter rollers 6, 6 This is done in consideration of safety, such as preventing hands from being accidentally pinched due to the gap between the conveyors, and also to prevent unsightly appearance, such as the drive mechanism inside the conveyor being exposed from the outside. . Therefore, the path of the object f is changed by approximately 90 degrees by the rotation of the large diameter roller 6, as in the previous embodiment.

After that, as in the above explanation, the drive main shaft b rotates as a result of the rotation from the motor a via the sprocket g, chain h, and sprocket i, so the rotating shaft e also receives rotational force via the drive belt C. It is rotated by following the rotation.

Therefore, the object f whose path has been changed by approximately 90 degrees is conveyed on the straight line _A2 at the rear stage by the rotation of the roller d.

As mentioned above, the present invention transmits the rotation from the motor to one common drive shaft, and by this rotation, a portion of the rotation is transmitted to the rotating shaft, which is rotated through the drive belts each wound around the drive shaft. The structure is simple, consisting of cylindrical divided rollers arranged in rows that are in contact with each other, and the rollers are loosely inserted, so the path of the object can be changed reliably in a short period of time, and objects can be shared. The cost is low, and only the rollers and rotating shafts can be easily replaced, making maintenance and management reliable and improving the reliability of the product.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an example of a conventional linear conveyor, Fig. 2 is a sectional view showing an example of the drive mechanism of the linear conveyor shown in Fig. 1, and Fig. 3 is an embodiment of the present invention. FIG. 4 is a plan view showing an example, FIG. 4 is a sectional view, and FIG. 5 is a plan view showing a modification of the route changing conveyor. 1, a... Motor, 8, 9; g, h... Sprocket, 2, b... Drive shaft, 3, 3'; e... Rotating shaft, 4, 4'... Pulley, 5, c... Drive belt, 6, 6', d...Roller, F...Frame.

Claims (1)

[Scope of utility model registration request] In a conveyor configured with a plurality of rollers that are given rotational force by friction with a rotating shaft, and a drive shaft that rotates the rotating shaft via a transmission means such as a belt, a first passage and a A corner portion with a second passage that changes direction in a direction perpendicular to the first passage has a length equal to or greater than the width of the first passage and the second passage,
A plurality of corner rotation axes installed at 45 degrees with respect to the rotation axes of the first passage and the second passage, and rotation of the rotation axis of the first passage, the rotation axis of the corner part, and the rotation of the second passage. In the triangular part between the axis and the rotation axis of the corner part, the triangular part on the first passage side is parallel to the rotation axis of the first passage, and the triangular part on the second passage side is parallel to the rotation axis of the second passage. A plurality of rotating shafts are arranged parallel to the rotational axis of the corner part, and the length of the rotating shaft is gradually shortened as it reaches the rotational axis of the corner part, and each of the rotating shafts has a rotational axis that is parallel to the rotating shaft. A plurality of rollers are loosely fitted to each other, and each rotating shaft located at a corner portion and a triangular portion is configured to rotate at the same speed as the rotating shafts of the first passage and the second passage. A route change conveyor characterized by: