JPH09216710A - Directly advancing feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To partially double the transferring speed of an article, and discharge the article at a high speed, by providing a frictional plate which is pushed to the lower side of a roller and can transfer the article faster than the transferring speed of the roller. SOLUTION: At first, an article is moved at a speed when it is sent, and the rotation of a roller 11 is decelerated by friction between a supporting shaft 15 and a horizontal hole 16 so as to approach the moving speed of a band-like body, then approaches zero. A frictional plate 12 is lifted by moving means 20, and brought in contact with the lower side of the roller 11. The roller 11 is moved by driving bands 9 and 10 so as to be rotated by friction between the roller 11 and the frictional plate 12, which is generated by bringing the roller 11 in contact with the frictional plate 12. A contact point between the frictional plate 12 and the roller 11 becomes a momentary rotary center, therefore, the upper part of the roller 11 is moved at a speed double the moving speed of the roller 11. Therefore, the article placed on the roller 11 is transferred at a speed double the moving speed of the band-like body formed by the roller 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the storage and transfer of articles from one process to the next. Therefore, the present invention can be used in all industrial fields including automatic assembly and automatic packaging.

[0002]

2. Description of the Related Art Conventionally, a chute, a belt conveyor, a vibrating rectilinear feeder, etc. have been used when articles are swung by a bowl feeder and transferred in a single line to the next step.
These transfer means did not have the function of partially changing the transfer speed of the articles. It is supplied at high speed and randomly from the previous step, and when the articles are supplied to the next step at a constant interval, the articles sent if the articles do not move at high speed on the inlet side of the buffer and the preceding step cannot operate, If the articles are stored at a high speed, the articles are not only damaged by the friction with the transfer means during the storage, but also often cannot be stored. Therefore, many storage devices using roller conveyors are found. In a usual roller conveyor, power is not applied to the rollers, and articles are stored by being moved by rotating the rollers by an external force or inertia. Sometimes there are things that add power to the rollers,
Others stop the rotation of the roller when the article is stopped by an external force. In addition, JP-A-61-90906
As described in JP-A-2-193805 and JP-A-2-193805, chain conveyors are provided on both sides for moving articles, and freely rotatable rollers are mounted between the chains, and the rollers are moved by the chain, and There was also one that puts articles on and transports them for storage. According to this method, the transfer speed of the article is determined by the speed of the chain, and at the time of storage, the roller moves while rotating, so that the article can be stored without damaging it. However, when the weight of the article becomes heavier, the roller starts to rotate, so that the article has a drawback that slippage occurs as in the case of storing and the transfer speed decreases. Further, since the chain is used, running at a high speed causes noise, which is not suitable for a high-speed production process. Further, when the stored article is taken out, it is governed only by the transfer speed of the chain, and due to the inertia of the article, the roller rotates in the direction in which the article is not fed, thereby reducing the article discharge speed. Further, an attempt has been made to enable speeding up and accumulation described in Japanese Patent Publication No. 58-46406, and in this device, small wheels are brought into contact with a guide rail over the entire length of the conveyor to speed up. The large wheels that are in contact with the constantly rotating small wheels transfer the goods, and the storage is performed by sliding between the small wheels and the large wheels. For this reason, not only a large amount of mutual pressing of the articles occurs during storage, but also slippage occurs between the small wheel and the large wheel during movement, making transfer impossible. In the speed-up accumulation rate chain described in Japanese Patent Laid-Open No. 62-4110, which was invented in order to overcome this deficiency, a small roller is interposed on the outer peripheral portion of a large roller having a small diameter portion which meshes with a sproget and is supported by a rail. A plurality of shafts are provided and small rollers are attached to the shafts. Again, the movement of the article depends on the friction between the small and large rollers and does not completely overcome the defect,
Since a large number of small rollers are provided on the outer periphery of the large roller, the upper surface of the conveyor is a combination of the wavy shape of the large roller and the wavy shape of the small roller, which cannot be used for transferring and storing small articles. In these inventions, the transfer and the storage of the articles are taken into consideration, and it is not considered that the transfer speed is partially or temporally changed and the articles overlap each other.

[0003]

SUMMARY OF THE INVENTION According to the present invention, at a given time, a part or all of the transfer means does not apply a transfer force to the article, that is, the article comes from the tail even if the article is pushed. The pushing force on the front part does not push the top part of the article, and the transfer speed of the articles can be partially doubled to release the overlap of the front and back articles. The purpose is to obtain a straight-line feeder that can meet the requirements of the next process by discharging.

[0004]

FIG. 1 is a perspective view of the present invention, FIG. 2 is an explanatory view of the present invention seen from the side, FIG. 3 is an explanatory view showing a cross section, and FIG. It is a detailed view of attachment. This will be described with reference to the examples shown in these figures. The flat base material 30 is bridged to the side plates 1 and 2 installed in parallel with each other to keep the side plates 1 and 2 parallel to each other. A drive shaft 3 and a driven shaft 4 are rotatably supported at one end of each of the side plates 1 and 2. The drive shaft 3 is connected to a drive source such as a motor (not shown). Pulleys 5 and 7 are fixed to the inner sides of the side plates 1 and 2 of the drive shaft 3 in the immediate vicinity thereof, and pulleys 6 and 8 are fixed to the inner sides of the side plates 1 and 2 of the driven shaft 4 in the vicinity thereof. The drive belt 9 is wound around the pulleys 5 and 6, and the drive belt 10 is wound around the pulleys 7 and 8. As shown in FIG. 4, the drive bands 9 and 10 have a large number of lateral holes 16 all around, and the support shaft 15 of the roller 11 is rotatably supported in the lateral holes 16. The roller 11 has a diameter and a length suitable for the article,
Is selected so that the articles do not fall or get caught, and the distance between the lateral holes 16 is set so as to be the distance, so that an endless strip having a large number of rollers arranged in parallel is formed. . Immediately below the upper strip, parallel to the upper strip, a flat friction plate 12 is provided, which is a cylinder, a solenoid,
It is attached to the substrate 30 via a known moving means 20 such as a mechanical link. Since the article is placed on the upper strip, the side plates 1 and 2 are provided with the receiving members 17 and 18 for receiving the driving strips 9 and 10 so that the strip does not hang down due to the weight of the article. It does not change. Further, inserting a sheath-shaped antifriction member into the lateral hole 16 or inserting a bearing in order to reduce friction between the support shaft 15 and the lateral hole 16 does not change the gist of the present invention. Support shaft 15
Although the roller 11 and the roller 11 have been described as a single unit, forming the support shaft 15 as a member penetrating the center of the roller 11 in two parts does not change the gist of the present invention.

[0005]

The operation principle of the present invention is shown in FIG. The arrow pointing to the left in the figure indicates the direction in which the roller 11 is moved by a drive band (not shown). FIG. 1A shows that when the article 50 is placed on the roller 11 and the roller 11 is moved in a state where the friction plate 12 installed below the roller 11 is separated from the roller 11, the article 50 is moved. Indicates. Although the weight of the article 50 is applied to the roller 11, the roller 11 is not rotated by the article 50, and the friction plate 12 is also separated from the roller 11 and does not act on the roller 11. It moves in the direction of the arrow without rotating, and the article 50 is also moved. The same figure (B) is article 5.
0 indicates a state in which the shutter 30 is forcibly stopped due to storage. Since the friction plate 12 is separated from the roller 11, it does not act on the roller 11. Since the roller 11 is moved in the direction of the arrow, the roller 11 moves in the direction of the arrow while rotating counterclockwise due to friction with the article 50 placed on the roller 11. Therefore, the friction applied to the article 50 is rolling friction with the roller 11, and the force with which the article 50 is pressed against the shutter 30 is small. FIG. 6C shows a state when the article 50 is rapidly moved. The friction plate 12 is pressed against the lower side of the roller 11, and the roller 11 is rotated clockwise by pulling the roller 11 in the direction of the arrow. Therefore, the article 50 moves in the direction of the arrow. At this time, the upper part of the roller 11 rotates around the contact point between the roller 11 and the friction plate 12 as the center of instantaneous rotation, so that the article 50 placed on the roller 11 moves at twice the moving speed of the roller 11. As described above, since the rotational movement of the roller 11 can be controlled depending on whether or not the friction plate 12 is brought into contact with the roller 11, the articles are normally transferred and stored without applying a force from the roller, and the articles are required. Accordingly, the force from the roller 11 is applied to forcibly move the article at a speed twice the moving speed of the roller 11. First
The operation will be described with reference to FIG. 2, FIG. 3, FIG.
The drive shaft 3 is rotated by a drive source such as a motor (not shown), and the drive bands 9 and 10 wound around the drive shaft 3 and the driven shaft 4 move from right to left in FIG. The drive bands 9 and 1
A large number of rollers 11 rotatably supported at 0 have lateral holes 16
Since the friction is due to the friction, the roller 11 moves from the right to the left in the figure without rotating. Next, when the article is fed from the right side, the article rides on the strip formed by the roller 11. The roller 11 starts to rotate due to the difference between the speed at which the article rides on the belt formed by the roller 11 and the moving speed of the belt formed by the roller 11, and the article initially moves at the fed speed. However, the rotation of the roller 11 is decelerated by the friction between the support shaft 15 of the roller 11 and the lateral hole 16, and the moving speed of the article approaches the moving speed of the belt-shaped body formed by the roller 11, and the rotation of the roller 11 approaches zero. . When the article is stopped by a shutter (not shown) in the vicinity of the right end of FIG. 1, the article stops, so that the roller 11 rotates and moves with the drive bands 9 and 10. Therefore, since only a small force due to rolling friction acts between the roller 11 and the article, the articles can be stored without pressing each other. Next, the friction plate 12 is moved by the moving means 20.
Is lifted and abuts on the lower side of the upper roller 11. Since the roller 11 is moved by the drive bands 9 and 10, the friction plate 1 is brought into contact with the friction plate 12 by contacting it.
Rotates due to friction with 2. Since the contact point between the friction plate 12 and the roller 11 becomes the center of instantaneous rotation, the upper part of the roller 11 moves at a speed twice the moving speed of the roller 11. Therefore, the article placed on the roller 11 is transferred at a speed twice as fast as the moving speed of the belt-shaped body formed by the roller 11. When the urging of the moving means 20 is released, the friction plate 12 separates from the roller 11 and returns to the initial state. Therefore, when the article is supplied from the previous step at a high speed, the article is not moved to the buffer portion at a high speed and does not hinder the previous step. Also,
When the articles sent from the previous step are in contact with each other and need to be separated one by one, the articles move at the moving speed of the roller 11 at first, but when the roller 11 contacts the friction plate 12, the article suddenly moves. Since the transfer of the articles is accelerated, the distance between the front and rear articles can be widened and the articles can be separated. A part to be transferred at high speed is specified, and when the transfer is always performed at high speed, the moving means 20 is removed and the friction plate 12 is kept in contact with the roller 11 without changing the gist of the present invention. In addition, there are two places that require high-speed movement.
When two or more friction plates 20 are provided and there are two or more friction plates, each of them has a moving means, and the friction plates are moved up and down at the same time or individually, it does not change the gist of the present invention.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT In FIG. 1, when the article is driven from left to right with a drive shaft of 4, a shutter (not shown) is installed at the right end to store the article. When there is a command to replenish the article from the next step, the shutter is opened and at the same time, the moving means 20 is urged to bring the friction plate 20 into contact with the roller 11 and forcibly rotate the roller 11 to remove the article from the belt-shaped body. Discharge at a moving speed twice the moving speed. When the discharge is completed, the shutter is closed and at the same time, the bias of the moving means is released, the friction plate 12 is separated from the roller 11, the article is stopped, and the roller 11 is rotated.

In FIG. 1, the friction plate 1 is always used instead of the moving means 20 when the article flows from left to right with the drive shaft as 4.
A member for bringing the roller 2 into contact with the roller is installed, and the friction plate 12 is placed in contact with the roller 11. The articles flowing in from the left side are initially transported at the speed of the belt-shaped body formed by the rollers 11, but at the portion where the friction plate 20 contacts the rollers 11, they are suddenly transferred at twice the speed. It is possible to increase the distance between the two articles when the two articles are transferred together.

FIGS. 5, 6, and 7 are provided to facilitate the practice of the present invention. Since it is very troublesome and expensive to provide a large number of lateral holes 16 in the drive bands 9 and 10, the lateral groove 17 is provided instead of the lateral holes as shown in FIG. The support shaft 15 is fitted in the lateral groove 17. Since the support shaft 15 is rotatably fitted in the lateral groove 17, the support shaft 15 is disengaged from the lateral groove 17 at both ends and the lower side of the belt. Therefore, as shown in FIGS. 6 and 7, the fall prevention covers 21 and 22 fixed to the side plates 1 and 2 are provided on the outer sides of the rollers 5, 6, 7, and 8 in the immediate vicinity of the rollers 1, 6, 7.
At the same time as 1 is suppressed, the support shaft 15 is suppressed so as not to drop from the lateral groove 17. Continuing from the caps 21 and 22, caps 23 are installed below the drive belts 9 and 10 and the roller 11 on the lower side so as to bridge the side plates 1 and 2. The installation of the friction plate 12 is the same as that described above. Support shaft 15
When the support shaft 15 penetrates the roller 11 and is rotatable with respect to the support shaft 15 penetrating the roller 11, the roller 11 and the roller 11 are composed of two parts.
The support shaft 15 is rotatably supported by a snap ring or the like so as not to move with respect to the support shaft 15 to prevent the support shaft 15 from slipping out of the lateral groove, or the widths of the side plates 1 and 2 are widened to drive the drive bands 9 and 1.
Preventing the support shaft 15 from falling off by covering the outside of 0 does not change the gist of the present invention.

[0009]

As described above, according to the present invention, it is possible to easily realize the movement of an article at a double speed as needed. Therefore, it is easy to store, separate, and move items.
I think that it is a major contribution to rationalization and automation when using various industrial machines.

[Brief description of drawings]

FIG. 1 Explanatory diagram seen from above

[Explanation of symbols]

1: side plate, 2: side plate, 3: drive shaft, 4: driven shaft, 5: drive pulley, 6: driven pulley, 7: drive pulley, 8: driven pulley, 9: drive band, 10: drive band, 11: Roller, 1
2: Friction plate

FIG. 2 is an explanatory view seen from the side.

[Explanation of symbols]

2: side plate, 3: drive shaft, 4: driven shaft, 7: drive pulley,
8: driven pulley, 10: drive band, 11: roller, 12:
Friction plate

FIG. 3 is a sectional view of the present invention.

[Explanation of symbols]

1: side plate, 2: side plate, 9: drive band, 10: drive band, 1
1: roller, 12: friction plate, 15: support shaft, 16: lateral hole, 17: receiving member, 18: receiving member

FIG. 4 is an explanatory view of a drive belt having lateral holes and rollers.

[Explanation of symbols]

10: drive band, 11, 11a, 11b, 11c, 11
d: roller 15, 15a, 15b, 15c, 15d: support shaft 16, 16a, 16b, 16c, 16d: lateral hole

FIG. 5 is an explanatory view of a drive belt having lateral holes and rollers.

[Explanation of symbols]

10: drive band, 11, 11a, 11b, 11c, 11
d: rollers 15, 15a, 15b, 15c, 15d: support shafts 17, 17a, 17b, 17c, 17d: lateral grooves

FIG. 6 is an overhead view of an embodiment having a plurality of friction plates

[Explanation of symbols]

1: side plate, 2: side plate, 3: drive shaft, 4: driven shaft, 5: drive pulley, 6: driven pulley, 7: drive pulley, 8: driven pulley, 9: drive band, 10: drive band, 11: Roller, 1
2: Friction plate, 12a: Friction plate 21: Fall prevention cover, 22: Fall prevention cover

FIG. 7 is a side view of an embodiment having a plurality of friction plates.

[Explanation of symbols]

2: side plate, 3: drive shaft, 4: driven shaft, 7: drive pulley,
8: driven pulley, 10: drive band, 11: roller, 12:
Friction plate, 12a: Friction plate 21: Fall prevention cover, 22: Fall prevention cover, 23:
Fall prevention plate

FIG. 8 is an explanatory diagram of the operation of the present invention.

[Explanation of symbols]

11: roller, 12: friction plate, 30: shutter, 50:
Goods Arrow indicates the direction in which the roller is pulled

Claims (2)

[Claims] 1. A conveyor for transporting articles by moving a large number of rollers, a roller on which an article is placed, two drive belts having lateral holes for rotatably supporting the rollers, and a roller provided below the rollers. And a friction plate capable of transferring an article faster than the moving speed of the roller by pressing the friction plate against the lower side of the roller. feeder. 2. A conveyor for transporting articles by moving a large number of rollers, a roller on which an article is placed, two drive belts having lateral holes for rotatably supporting the rollers, and a roller provided below the rollers. One or more moving means and one or more friction plates mounted on the upper side of the moving means, and the moving means presses the friction plate to the lower side of the roller to convey the conveyor. A straight-line feeder having one or more friction plates that allow articles to be transferred at one or more locations faster than the speed of movement of the rollers.