JPH02276707A - Roller conveyor - Google Patents

Abstract

PURPOSE:To efficiently and orderly align articles without providing an aligning means by coaxially dividing a large number of roller shafts rotatably mounted, in a prescribed position on a transfer passage, so that the connecting line of division points is sloped to divide the transfer surface into fast and slow speed regions of different speeds at the division points. CONSTITUTION:A large number of rollers 2 are loosely inserted into a roller shaft 3 so as to be turned by the friction engagement with the shaft 3 for transferring articles A, A1 to A2. And the shaft 3 is coaxially divided into slow speed shafts 3A1 to 3A5 and fast speed shafts 3B1 to 3B5 so as to divide the transfer surface of a conveyor 1 into a slow rotating speed region 1A and a fast rotating speed region 1B at the division part 1C having an inclination thetato the normal h in the axial direction of the shaft 3. And, the shafts and rollers in respective regions are driven by respective motors M, M1 at respective speeds. By this constitution, speed difference is successively caused making a boundary of the division part 1C, enabling efficiently aligned transfer of articles without mutual interference or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a roller conveyor capable of conveying articles.

[Conventional technology]

2. Description of the Related Art Conventionally, there is a roller conveyor as one of articles conveying machines.

In this conventional roller conveyor structure, the driving force of a motor, etc. is transmitted through power transmission parts such as pulleys, belts, chains, and chain wheels, and the roller shaft is rotatably mounted between the side walls of the frame. However, there has been a system in which a roller is inserted into the roller shaft, and the roller shaft is rotated together with the roller via a power transmission component by the driving force of a motor or the like to forcibly convey the article.

In addition, as another conventional example of a roller conveyor, for example, as in the configuration described in Japanese Patent Publication No. 55-16932, a shared drive shaft arranged in the longitudinal direction within the frame is first rotated by a motor as a drive source. , is driven, and then this driving force is transmitted through an appropriate power transmission part to rotate a number of roller shafts that support the rollers, and a conveying force is generated by friction and engagement with the roller shafts. , there are those that transport goods.

Each of the conventional roller conveyors is connected to several working machines for cleaning, painting, assembly, inspection, filling, packaging, packaging, etc., and sequentially conveys articles between them. . In order to save space in the conveyor line setting, a large number of articles are aligned in a horizontal direction with respect to the width of the conveyor, with the aim of efficiently conveying the articles by conveyor lines set at short distances. When conveying items in multiple rows, due to the working time of each work machine, the alignment of the items may be disrupted, the items may come into contact with each other and cause bite, and subsequent items may collide with the preceding item. This has caused confusion (jam) in the conveyance state of the articles in the traveling direction.

Conventionally, as a measure to prevent articles from getting mixed up, the rotational speed of the roller shaft of the conveyor is controlled, or a pooling device is used to temporarily pool articles between working machines. It was necessary to adjust the transport speed of the articles by setting up a system, and furthermore, it was necessary to stop driving the entire line, including the working machines.

Therefore, conventionally, in order to convey a large number of articles lined up horizontally in the width direction of the conveyor in multiple rows without confusion, it has been necessary to use an article aligning device as an auxiliary device or an article sorting device. It was necessary to install it on the conveyor.

One of the article aligning devices etc. is one in which a desired number of rows of gate-shaped guide bars are provided on the conveyor in order to align the articles in the longitudinal direction of the conveyor's traveling direction, and another method is as follows. Guide belts are used to forcibly move items to prevent them from sticking to each other, and mechanical vibrations can be used to prevent items from sticking to each other in areas where the items are easily disorganized. A swinger is installed to unravel and move the items to prevent them from sticking and causing confusion.
There is something that prevents jams from occurring.

[Problem to be solved by the invention]

However, the conventional guide bar method described above
When an article collides with a bar installed in a stationary state, the preceding article is moved and guided along the guide bar by the pressure of the following article. On the other hand, when conveying a large number of articles at once, such as by arranging them in a horizontal row, the articles tend to bite each other, causing confusion on the conveyor, which is not suitable for conveying articles. there were.

Therefore, in this method using a guide bar, it is necessary for a worker to manually organize the articles in advance so that the articles do not become confused.

In addition, when using a guide belt or a shaking device, objects that come into direct contact with the belt or shaking device tend to move under the drive and pressure of the belt or shaking device. Most of the remaining articles were susceptible to mutual bite.

Therefore, even with this method, it is not sufficient to reliably shake out the objects that have become stuck together and transport the objects, and the device itself becomes complicated and has a large number of parts.
Manufacturing and assembling required a lot of effort and manufacturing costs.

Therefore, the present invention changes the arrangement state of the articles arranged in the width direction of the conveyor in the horizontal direction to the arrangement state in the vertical direction on the conveyor itself.
A large number of items are arranged in a regular line without confusion or mutual bite, and are efficiently transported in the direction of travel to target working machines installed downstream, and the equipment itself is conventional. To provide a roller conveyor that is easy to manufacture and assemble and has low manufacturing costs, such as being able to be manufactured without making any major design changes.

[Means to solve the problem]

Therefore, in view of the above-mentioned points, the present invention includes a plurality of roller shafts that support rollers, which are rotatably mounted between frames, and the roller shafts and the rollers are coaxially arranged so as to be rotatable at different speeds at desired positions. A method was adopted in which the same conveyor was separated into two regions with different slowing speeds at the point where the roller shaft and roller were separated.

[For production]

The roller shaft supporting the rollers and the rollers are separated coaxially so that they can rotate at different speeds at desired positions on the conveyor, and the same conveyor is divided into two regions with different slowing speeds at the separation point of the roller shaft and rollers. For example, since the articles are divided diagonally to the direction of travel, multiple rows of articles conveyed by rollers with a slow rotation speed will be conveyed gradually and rapidly, with the articles reaching the rollers with a faster rotation speed first. . Therefore, the preceding articles are gradually separated from the following articles and transferred to the forward position in the direction of travel, so that multiple rows of articles conveyed on the same conveyor can be moved in the width direction of the conveyor without causing confusion. On the other hand, the objects are conveyed while changing the alignment state in the horizontal direction to the alignment state in the vertical direction.

〔Example〕

The details of the present invention will be described below with reference to the drawings, taking as an example the case where it is applied to a slip torque type roller conveyor.

1 to 4 show a first embodiment of the present invention, in which on the same conveyor 1 having a predetermined width, articles A, A1 g AHp A arranged in the width direction of the conveyor
The two areas where the conveyance speed for conveying 2... is slow and fast are the slow and slow portion IA where the rotation speed of the roller 2 is slow.
and the rapid portion IB where the rotational speed of the roller 2 is high are set at an appropriate inclination angle θ with respect to the normal line drawn so that it coincides with the axis of the roller shaft 3 which should be the boundary between the slow portion IA and the rapid portion IB. A large number of articles A, AI*Ax are arranged in a horizontal row with a desired inter-article distance Z in the width direction of the conveyor 1. -AI...
... is conveyed by using the speed difference of a speeding tool.

The roller 2 is divided into a large number of parts to form a roller shaft 3.
A large number of roller shafts 3 are rotatably mounted between opposing side walls 4a, 4a of the frame 4, and articles A, AHHAI HA3, etc. are mounted on the rollers 2.
... is placed, the roller 2 receives the load and due to friction and engagement with the roller shaft 3, the motor M9M
Articles A , AI , At receive rotation from +
, A3... are conveyed.

Further, the hole 2a of the roller 2 through which the roller shaft 3 is inserted is slightly larger than the outer diameter of the roller shaft 3, so that it can rotate freely.

In order to rotatably mount the roller shaft 3 on the opposing side walls 4a, 4a of the frame 4, a frame 4 is required.
An abbreviated upright piece 5.5 facing the upper surface is fitted into an insertion groove 6a provided on the lower surface of a long plastic bearing par 6, and a The roller shaft 3 is mounted between the frames 4 so as to be rotatably located within the bushing 7 by removably mounting substantially cylindrical bushings 7 into the numerous holding holes 6b.

In order to rotate and drive the large number of rollers 2 laid in the slow section IA and the quick section IB, each roller shaft 3 is provided with a drive means rotatably mounted in the longitudinal direction within the frame 4. each roller shaft 3
, the driving force of the motors M, M, whose rotational speeds are slow and fast, is transferred to appropriate power transmission parts, such as sprockets 8 and 9;
two shared and long drive shafts 11 and 11' that are rotationally driven by being passively driven using 0;
A toroid belt 13 is formed between the drive shafts 11, 11' and a pulley portion 12 fitted to one end of the roller shaft 3 by an appropriate winding method.

The rotational speed of the motor M 9M + is set to a certain speed as appropriate, and the speed of the motor M on the upstream side is set so that the conveyor speed (2) on the upstream slow section IA side is, for example, about 10 mm/see. The rotation speed is slow, and the transfer speed Vx of the conveyor on the downstream immediate section IB side is, for example, 40a.
The rotation speed of the motor M1 on the downstream side is set to a high speed so that the rotation speed is about m/sec. That is, the slow and slow portion IA
The quick part IBO roller 2 is about 4 times faster than the roller 2 in
A1 .

Further, as shown in FIG. 1 and FIG.
The roller shafts 3A+ on the slow/slow part IA side are arranged such that the roller shafts 3A+ on the slow/slow portion IA side are gradually shortened one by one so that they are continuously inclined at an appropriate inclination angle θ, for example 45°, in the article conveyance direction.
3Az, 3Aa.

3Aa, 3As... and the roller shafts 3B+, 38z, 3B3 . 3
B4. 3B, . . . are coaxially separated and rotatably mounted between opposing side walls 4a, 4a of the same frame 4.

The roller shaft 3/'z -3Ag, 3A 3 As t 3 As...; 3B+,
38z, 3B:l.

The other end of each of 3B4-3BS... is a substantially T-shaped support component 15 installed on the upper surface of a support plate 14 installed below the frame 4 at the same height as the bearing par 6. It is rotatably supported.

The first embodiment of the present invention has the configuration as described above. For example, articles A s A
t, At+Az... are arranged in a line with a desired inter-article distance of 50, and successively placed on the rollers 2 at a predetermined interval with respect to the traveling direction of the conveyor 1.
When placed, article A = At , At , A, ・
... is transported as follows.

(a) First, when the low-speed motor M on the slow/slow part LA side is driven, the shared drive shirt 1-11 receives rotational force and rotates via the sprockets 8, 9 and the chino 10, so this drive Toroid belt 13 being turned around shaft 11. Each roller shaft 3; 3A+3A2 . 3A*, 3Aa
, 3As... are rotationally driven, so the roller 2 that frictionally engages with this roller shaft 3 is rotated by each roller shaft 3i3A+ 2.3Az-3As, 3Ai, 3A,... Rotates by passively receiving rotational force.

Then, the conveyor 1 is placed on the roller 2 of the slow/slow part IA of the conveyor 1 by, for example, a working machine installed on the upstream side.
A large number of articles A are arranged with a desired inter-article distance of 50 mm in the transverse direction with respect to the width direction of the article A, and are placed at predetermined intervals in the traveling direction.

For example, At , At t Ax """ is 10 m/s
They are transported in multiple rows at the same speed of ec.

By the way, the roller shaft 3A+ on the slow and slow portion IA side is located at a desired position on the same conveyor
, 3At , 3A3 . 3A4 -3As...
...and roller shaft 3B + 38g on the urgent part IB side
, 3Bi, 3B4 -3Bs..., each one adjacent to the traveling direction on the same axis gradually,
The separated parts IC are separated on the same axis so as to be shorter, and the separating parts IC are formed obliquely at an inclination angle of 45 degrees with respect to the normal drawn in line with the roller shaft 3 in the traveling direction, as shown in FIG. There is.

(bl) The roller 2 on the immediate part IB side also transfers the driving force of the motor M1, which rotates at high speed, to the roller shaft 3;
, 3B3 * 3Ba t 3Bs...
・ is rotationally driven, so the articles A, AH, Az, Az, etc. on the roller 2 are transported at a conveying speed of 49 W/sec.
... will be transported downstream.

(C) In this case, the articles A, A, .

A1-- is 40m/sec, which is 4 times higher than 101 layers/sec.
c and the conveyance speed increases, the objects are conveyed in sequence.

fdl That is, as shown in FIG.
’ position at a transport speed four times faster than the previous section IB.
is being transported.

At this time, the distance between the articles in the width direction of conveyor l is exactly 50.
The other row of articles AI (second row in the figure) with holes in the fins are transported to the position where they are about to approach the separating section IC, as shown by the imaginary line in FIG. 4. It's just that there is.

Then, the following article A1 is transported to the position of the article A' at the front position in the advancing direction at an immediate portion IB having a conveyance speed four times as high as that of article A'.
When the article A' begins to be conveyed rapidly, the preceding article A' has already been conveyed to the position of the article A'' ahead of it. Therefore, the preceding article A conveyed on the same conveyor l
(articles on the first stage in the figure) and in the width direction of the conveyor 1,
In this example, the following articles AI (articles on the second stage in the figure), which are placed with a distance between each other, are 50 cranes, and as a result, in the immediate section IB, the following articles AI are placed with a distance between them. They are transported with a difference corresponding to the distance M1.

Furthermore, in the figure, the preceding article A in the second stage.

Similarly to the case of the article A on the first tier and the article A+ on the second tier, the subsequent article A2 on the third tier is also conveyed with a difference of distance l in the urgent portion IB.

Now, as a condition, a large number of articles A, Ar, Az, A3, etc. are arranged and opened in a horizontal line in the width direction of the conveyor l.
Distance between articles: Z Conveying speed of articles on the upstream side of conveyor 1: ■y conveyor l
Conveying speed of the article on the downstream side of: ■ x Inclination angle of speed change of the separating section 1C provided between the slow section IA on the upstream side of the conveyor 1 and the quick section IB provided on the downstream side: θ A large number of articles A, A+, Ax, As...
... is the distance Z between the articles in a row in the width direction of the conveyor 1.
Articles A, A+, Ai, As...
...and the following articles A, A+, At, A3.
. . . Articles A and AI are arranged horizontally in a row in the width direction of the conveyor l when they are sequentially placed and conveyed on the conveyor l at a desired interval so that they do not overlap.

Az, Ai... Considering the conveyance distance l in the urgent section IB between them, for example, in the direction of movement of the conveyor 1, in FIG. At the time (position 01), the article A1 on the second stage in the figure has not yet reached the separating section IC (position Of) and is located in front of the separating section IC (position 0). By the time the second-stage article A reaches the separating section 1C, 80, 0□, 01 in FIG.
, that is, there is a conveyance distance of Z・tan θ, but when the second stage article A reaches the separating section 1C, the preceding article A is no longer transferred to the immediate section IB of the conveyor 1.
reaches the position A', and the first stage article A continues to lead.
The following second stage article A1 also passes through the separating section IC and conveys the immediate portion IB, respectively, and reaches the positions A'' and A''1, where it is transported with △ complementary to the aforementioned △OHg Oz gO5.
O' l , O' t t O' 2 are formed. Therefore, by taking into account the slow and fast conveyance speeds in the slow part LA and the fast part IB of the conveyor 1, and dividing the conveyance speed, the distance from the furthest distance that the first stage article A is traveling from the separating part IC to the quick part IB to the second stage. If the distance traveled by article A in FIG.

・・・・・・・・・・・・2fil Then, under this example, the conveyance speed vy of the article on the upstream side of the conveyor 1 is 10 mm/sec, and the conveyance speed Vx of the article on the downstream side of the conveyor 1. 40 cranes/Sec% A large number of articles A, A+, Az, As...
・The distance Z between the articles is 50m, and these values are the above f
1) When calculated by substituting into the formula, in this example, in the immediate section IB of the conveyor 1, there is a The transport distance 1 between the article A1 on the tier and the article A! on the 3rd tier is 1
50+n solutions are obtained. Therefore, the articles A , AI , At
, As... are sequentially transported with a difference of transport distance l, that is, 150 mm, in the vertical direction with respect to the traveling direction of the conveyor 1.

In this way, multiple rows of articles A, AI, A2, A
3. Utilizing the difference in conveyance speed between the slow section IA and the quick section IB formed on the same conveyor 1,
By changing the alignment state in the horizontal direction to the alignment state in the vertical direction with respect to the width of the conveyor 1, it is possible to convey the articles without causing them to bite or get confused.

In this case, if, for example, a known guide bar is installed downstream of the immediate section IB of the conveyor 1, the articles A that are changed from one horizontal row to one vertical row in the urgent section IB of the conveyor 1 can be installed.
* AI + At t As... can be easily changed into a vertical line without causing food damage or confusion.

Therefore, for example, in the forward position 1 in the direction of movement of the rapid portion IB of the conveyor 1, the difference in conveyance distance 1 between the articles A and AI is
, AN , A3..., downstream of conveyor 1, work such as cleaning, painting, assembly, inspection, filling of contents, packaging, packaging, etc. will be performed, and such work machines will be installed. suitable for

Next, a second embodiment of the present invention will be described with reference to FIG.

In this embodiment, unlike the first embodiment, the articles placed on the slow/slow part IA at intervals in a horizontal row in the width direction of the conveyor 1 are changed in the vertical direction with respect to the traveling direction of the conveyor 1. The separating parts IC are arranged diagonally in a stair-like manner so that the articles A and A to be conveyed are aligned.
Considering the size and length of I, At, A3..., roller shirt 3A+,
3Az, 3A3 * 3A4, 3
As......and roller shaft 3B+t
3Bg, 3B23B4. 3BS...... on the same conveyor l, for example, 2 to 3 pieces at a time.
They are separated on the same axis so that they gradually become shorter as a set, and when the size of articles A, AI, A2, A, etc. increases or when conveying long items, separation is performed. By preventing the application of unequal forces in different directions in the part IC, the article A = AI - At t A3...
The conveyor 1 can be smoothly delivered and conveyed from the slow part IA to the fast part IB without changing the conveying direction or stopping the conveyor.

Further, a third embodiment of the present invention will be described with reference to FIG.

In this embodiment, unlike the first embodiment and the second embodiment, the roller shaft 3A+ constituting the separating section IC is
*3At, 3As, 3A4...
and roller shafts 3B+, 3Bz, 3B2
．． A suitable number of 384..., four in the drawing, are separated into approximately the same length to form a separation part IC between the slow part IA and the fast part IB of the conveyor 1, and the article A .

AI - At , A3 . . . are adapted to larger values so that smooth transfer from the slow portion LA to the fast portion IB can be performed.

In addition, in the first to third embodiments described above, the case where the application is applied to a slip-torque type roller conveyor is explained, but the present invention is not limited to the slip-torque type roller conveyor. Needless to say, the invention can also be applied to a roller conveyor in which the roller 2 is fitted onto the shaft 3 and rotates together.

Moreover, from the shared drive shafts 1 and 11' for rotating and driving the respective rollers 2 of the slow section IA and the fast section IB of the conveyor 1, a large number of roller shafts 3 are rotated by motors M and M+. The drive mechanism for transmitting force is not limited to a belt drive system using the toroid belt 13, but may also be a chain, sprocket, or other drive system.

Further, although the drawing shows a case where runes with prescribed dimensions are set, it is possible to set and change lanes. Furthermore, the planar shape of the separation section IC provided between the slow section IA and the quick section IB of the same conveyor 1 is shown in the first to third embodiments as examples, and is not limited thereto. Combinations are possible.

〔Effect of the invention〕

As described above, unlike conventional article sorting devices and article sorting devices, the present invention changes the conveyance state of articles from a horizontal line to a vertical line in the width direction of the conveyor without applying specific means to the conveyor itself. Since it is possible to change the direction of movement, there is no need to add a special article sorting device to the conveyor, and it is possible to align a large number of articles in the direction of travel without having to rely on human hands, without causing any confusion or biting of the articles. It can be efficiently transported to the forward position in multiple rows. Moreover, the conveyor itself can be manufactured by separating the roller shafts on the same axis without making any major design changes compared to conventional conveyors, making manufacturing and assembly simple and inexpensive.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the first embodiment of the present invention, Fig. 2 is an exploded perspective view showing the main parts, and Fig. 3 is the same as shown in Fig. 2.
FIG. 4 is a plan view showing the conveyance state of the article, FIG. 5 is a plan view showing the second embodiment of the invention, and FIG. 6 is a plan view showing the third embodiment of the invention. be. 1... Conveyor, IA... Slow part, IB... Rapid part, IC... Separation part, 2... Roller, 3; 3A
+, 3A2.3A3. 3A4 t 3As i
3B+, 38z383. 384. 3Bs...
Roller shaft, 4... Frame, 5... Upright piece,
6... Bearing bar, 7... Bush, 8,9.
... Sprocket, 1o... Cheno, 11, 11'.
...Drive shaft, 13...Troid belt,
15... Supporting parts, A, A,, A, A,... Goods, M, M,... Motor.

Claims (6)

[Claims] (1) A large number of roller shafts supporting rollers are rotatably mounted between frames, the roller shafts and the rollers are coaxially separated so as to be rotatable at different speeds at desired positions, and the roller shafts and the rollers A roller conveyor characterized in that the same conveyor is divided into two regions having different slowing speeds at a separation point. (2) The roller is divided into a number of parts and is loosely inserted into the roller shaft so as to be freely rotatable, and when a load is placed on the roller, the roller rotates due to friction and engagement with the roller shaft. 2. The roller conveyor according to claim 1, wherein the roller conveyor is rotated and driven by passive force. (3) the roller is fitted into the roller shaft,
2. The roller conveyor according to claim 1, wherein the roller conveyor rotates integrally with the roller shaft. (4) The roller conveyor according to claim 1, wherein the separation points of the roller shafts are arranged between the same frames so that the separation points of the roller shafts become gradually shorter one by one between adjacent roller shafts. (5) The roller conveyor according to claim 1, wherein the separation points of the roller shafts are arranged between the same frames so that the separation points of the roller shafts become gradually shorter every several times. (6) The roller conveyor according to claim 1, wherein the separated portions of the roller shafts are appropriately separated into several approximately equal lengths and arranged between the same frames.