JPS58177761A - Conveyor device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveyor device, and in particular, the present invention relates to a conveyor device, and in particular, a conveyor device that moves a cart along a predetermined rail or stops at an arbitrary location, and is used for many operations along the rail. This relates to a so-called accumulation conveyor that can absorb variations in work time for each process.

In conventional accumulation conveyors, when the cart comes into contact with a stopper or a preceding cart, the cart is stopped by separating the contact and meshing with the conveying belt-shaped object such as a belt or chain, and the cart is stopped at that position by accumulating. ) and
There is a method of accumulating without breaking the contact or engagement with the conveyance belt, but it is necessary to separately install a mechanism to disconnect the conveyor belt from contact or engagement with the chain. Therefore, the structure of the conveyor device becomes complicated, and since some of the carts are not locked during accumulation and are held in a state where they can move freely, a position adjustment device is required to prevent the carts from running freely. In any case, there is a drawback that the conveyor device as a whole is expensive.

In addition, in the method of accumulating the cart without breaking contact or meshing with the conveying belt, the friction force between the belt and the roller, which is the conveying belt, and the sliding friction force at the friction joint with the chain wheel, etc. In order to counter the new locking force, line pressure, which is a reaction force to the locking force due to the conveyance belt during accumulation, generally increases, and in order to cope with this reaction force, the strength of the stopper and the line pressure are increased. It becomes necessary to increase the strength of conveyor belts, chains, etc., and if you try to reduce the line pressure, you have to reduce the above-mentioned locking force. Therefore, the lock of the stopper is released and the cart starts again. There was a drawback that the cart did not start easily because slipping occurred when the cart was moved.

The present invention relates to a method of accumulating a cart using a conveyor belt-like object such as a belt or a chino without breaking contact or engagement with the conveyor belt-like object, but it is possible to significantly reduce line pressure during accumulation. In addition, when the stopper is released, the truck can be easily re-started, and a reliable and inexpensive accumulation conveyor can be obtained.The construction of the conveyor will be explained below with reference to the drawings.

FIG. 1 is a schematic diagram of an embodiment of the invention, and FIG. 2 is a general sectional view thereof.

A unit roller section 4 is provided on a trolley 3 that can freely run on rails 1 via wheels 2.2, and the unit roller section 4 runs parallel to the rail 1 in the direction of arrow A. It is constantly in contact with and engaged with the belt 5, which is a conveying belt-like object.

In the embodiment shown in FIG. 2, guide rollers 6.6 are rotatably provided on both sides of one wheel 2, and the rail 1 is held between the guide rollers 6.6 and runs. There is.

The belt 5 has an endless structure so as to run parallel to the rail 1, and the upper contact portion 5a that contacts the unit roller portion 4 runs parallel to the rail 1 on the belt receiving rail T as shown in FIG. They are being guided around the area.

The belt 5 is stretched between end gooliers 8, 8, and is installed over squeeze pulleys 9, 9 and a drive pulley 10.

The driving pulley 10 is the driving force f! When driven in the direction of arrow B by A11, the belt 5 runs in the direction of arrow A.

As shown in FIG. 3, the unit roller section 4 is provided with two rollers 12, 12, which are in surface contact with each other and are pressed against the contact portion 5a of the belt 5. 12. There is no rotation on the surface of the belt 5, so the carriage 3 moves on the belt 5 in the direction of arrow A as the belt 5 runs. Two or more rollers 12 may be provided. The roller 12 is rotatably supported by a roller shaft 13, and the roller shaft 13.13 is connected to the adjacent roller 1 by a spring 14, as shown in FIGS.
2 and 12 are biased in the direction of surface contact with each other.

The roller shaft 13 is connected to a shaft guide 15 that is locked to the cart 3.
It is inserted and supported in a non-rotatable but slidable manner in a long groove 16 provided in the horizontal direction. The shaft guide 15 is always urged by a spring 17 in a direction in which the roller 12 comes into contact with the belt 5, and is locked to the carriage 3 via a guide pin 18.

Next, the operation of this embodiment will be explained.

FIG. 4 shows the positional relationship between the rollers 12, 12 of the unit roller section 4 when the trolley 3 is moved. In this figure, roller shaft 1
Spring 14 between 3.13 is omitted.

Assuming that the belt 5 is now running in the direction of arrow A, the rollers 12, 12 are in pressure contact with the belt 5 via the spring 1T, so the rollers 12, 12 have already contacted the belt 5 at 81 points each. and are about to be rotated in the direction of arrow C, counterclockwise in the figure. The rollers 12, 12 are urged by the springs 14 and 14) and are pressed against each other at point d on their outer peripheral surfaces,
Since both rollers 2 and 12 are about to be rotated in the counterclockwise direction of arrow C, both rollers 12 are rotated at the contact point d.
．． , 12 tend to be rotated in opposite directions, and as a result, the rotations of both rollers 12 . ．． Since the rollers 12 and 12 are in pressure contact at three points in total: contact points a and b with the rollers 12 and contact points d with the rollers 12 and 12, the rollers 12 and 12 do not rotate, and the cart 3 moves on the belt 5. Moves as you drive.

Note that the long grooves 16.16 provided in the shaft guide 15 are provided in the horizontal direction with an interval that allows the rollers 12, 12 to come into surface contact with each other. As shown in Figure 4,
The diameter of the roller 12 is the outer diameter of the roller shaft 13, where the part that is fitted into the D1 long groove 16 is cut into a narrow ellipse. Then, the relationship D-a>t is maintained.

Next, the operation of the unit roller section 4 when the truck 3 is stopped by a stopper, a preceding truck, etc. will be explained with reference to FIGS. 4 and 5. Also in FIG. 5, the springs 14, 14 between the roller shafts 13, 13 are omitted.

If the belt 5 is now running in the direction of arrow A and is stopped by the truck 3 or a stopper, the shaft guide 15 will also stop, and the rollers 12, 12 will be brought into surface contact by the springs 14, 14. Both rollers 12.
12 are in surface contact with each other without rotating, and the respective roller shafts 13, 13 move in the direction of arrow A within the long groove 16.
Slide to the position shown in 11th ff. At this position, the roller shaft 13 on the rear side in the traveling direction of the belt 5 on the left side in the figure comes into contact with the groove end of the left long groove 16 and stops, but the belt 5 on the right side in the figure
The roller 12 on the front side in the traveling direction is experiencing rotational resistance based on the pressing force of the spring 17.17 against the belt 5, and the friction force between the roller 12 and the belt 5 causes the spring 14.1 to rotate.
Only the right roller 12 is moved in the direction of arrow A against the biasing force 4. As a result, as shown in FIG. 5, the distance m between the axes of the rollers 12, 12 becomes larger than the diameter of the roller 12, and the pressing force between the outer peripheral surfaces of the rollers 12, 12 is released. , 12 are in a freely rotatable state, and as a result, although the carriage 3 is stopped running, both rollers 12, 12 are allowed to rotate completely freely as the belt 5 runs while in contact with the belt 5. As mentioned above, since the roller 12 is rotatably supported on the roller shaft 13, the rotational force required to rotate both rollers 12, 12 is extremely small, and the belt 5 due to the stoppage of the truck 3 is
The line pressure based on the above-mentioned frictional force applied to the spring 17.
2 multiplied by the coefficient of rolling friction with respect to the roller shaft 13, which is significantly smaller.

When the stopping force on the truck 3 by the aforementioned stopper etc. is released, the rollers 12, 12 are immediately brought into surface contact by the biasing force of the springs 14° 14, and are in the relative positions shown in FIGS. 4 and 6. As a result, the rotation of roller 12.12 is stopped,
The truck 3 follows the running of the belt 5 and is very easily restarted.

FIGS. 7 and 8 show the structure of a unit roller section 20 in an embodiment in which a chain 19 is used as a conveying strip. A chain wheel 21 having an outer diameter smaller than the outer diameter of the roller 12 is integrally fixed to each of the rollers 12, 12, and each chain wheel 21, 21 meshes with the chain wheel 19.

The roller 12 is rotatably supported by a roller shaft 13, both roller shafts 13, 13 are urged by springs 14, 14, and the shaft guide 15 is connected to the carriage 3 via a spring 17 and a guide pin 18.
The relationships held in are the same as in the previous embodiment.

Also in this embodiment, the rollers 12 and 1 when the trolley 3 is running
2 and the rotation prevention relationship between both rollers 1 and 1 when the trolley 3 is stopped.
The respective operations of the rotatable relationship between parts 2 and 12 are exactly the same as in the previous embodiment.

In any of the embodiments described above, the unit rollers can operate in the same way even if the conveying belt or chain is running in the opposite direction, and can operate regardless of the traveling direction of the conveying belt. .

Although the above-described operation can be achieved even if one set of unit rollers is provided, the effect becomes even more reliable when a plurality of sets are provided as shown in FIG.

The present invention has the structure described in the claims, in which a unit roller section having a plurality of rollers that engage with a conveyance belt-like object is provided on a truck, and the rollers are always attached so as to be able to make surface contact with each other. When the cart is moving, the rollers are moved together with the conveying strip without rotating, and when the cart is stopped, the rollers are separated from each other, and each roller is rotated along with the traveling of the conveying strip, thereby reducing the accumulation of the cart. To obtain a conveyor device which is capable of significantly reducing the line pressure applied to a conveying belt during conveyance, has a simple IP structure, ensures reliable stopping and restarting of carts, and requires extremely little power for operation. This is what was created.

[Brief explanation of drawings]

FIG. 1 is a side view of an embodiment of the conveying strip belt; FIG.
The figures are an enlarged cross-sectional view of the line...-■ in Figure 1, Figure 3 is an enlarged partial side view showing a partial section of the unit, Figure 4 is a partial side view of the unit when it is moving, and Figure 5 is at rest. Fig. 6 is a sectional view taken along the line M-w in Fig. 1+, Fig. 7 is a partial side view of the unit part at
The figure is a partial side view of a unit section of another embodiment in which the conveying belt-like object is a chain, and FIG. 8 is a partial elevational view of the same unit section in the traveling direction. 1: Rail, 2: Wheel, 3: Dolly, 4, 20: Unit roller part, 5: Belt (conveyance strip) - 5a: Contact part, 12: Roller, 13: Roller shaft, 15: Axis guide, 1
9: Cheno (transport belt). 3 VJ Figure 4 Figure 6 Procedural amendment (voluntary) June 10, 1981 1. Indication of the case 1987 Patent Application No. 58756 2. Name of invention Conveyor device (1 other person) 5. Attachment of material in amendment instruction = 1 sum □ −−−−−−−1−−−−− (1) In the 12th line of page 2 of the specification, “Togaruga, conveyance belt-like object” is replaced by “Togaruga, but , in a system that stops contact or engagement with a conveying belt-like object, it is corrected to "conveying belt-like object". (2) In lines 11 to 15 of page 4 of the specification, "Rail 1--top... is maintained." [Attachment! ] Correct as follows. (3) In page 5, line 4 of the specification, "contacts with the back section 4" is corrected to "contacts with the rollers 12 and 12 of the back section 4." (4) In page 5, line 15 of the specification, N2.12 is in surface contact with each other and the belt is "r12, 12 is in surface contact with each other due to the biasing force of spring 14, and the belt is in surface contact with each other due to the biasing force of spring 17.17". ” he corrected. (5) In page 5, line 17 of the specification, “12, belt 5” is replaced with “1”
2 is belt 5,” he corrected. (6) In page 6, line 12 of the specification, "locked to the trolley 3 via the guide bin 18" is replaced with "locked to the trolley 3 via the guide bin 18 and the spring 17 so as to be swingable in the vertical direction." ” he corrected. (7) "6 points" in lines 8, 11 and 16 on page 7 of the specification are corrected to "point e". (8) In lines 4 and 5 on page 12 of the specification, "This makes the effect even more certain." is replaced with "This makes it possible to easily and reliably transfer carts between conveyors." I am corrected. (9) “Figure 1”, “Figure 4” and “Figure 6” in the drawings
Corrected as shown in the attached sheet. [Attachment I] "The bogie 3 is able to run freely on the rail 1 via the wheels 2, 2, and the unit roller section 4 is positioned downward between the left and right axles 2, 2 on the bottom surface of the bogie. The unit roller portion is provided between the rails 1 and has rollers 12 that are constantly in contact with and engaged with a belt 5, which is a conveying belt-like object that runs parallel to the rails 1 in the direction of arrow A. .12.” 36

Claims (1)

[Claims] A unit roller section is provided on a trolley that can freely run on rails via wheels, and the unit roller section constantly engages with a conveyance belt-like object running parallel to the rails, and keeps the surface of each other on the surface. A plurality of rollers are provided that are always biased so as to be able to make contact, and the roller shafts of the openings are brought into face-to-face contact from a distance where the axial center distance of the adjacent rollers is smaller than the position where the surfaces of the openings and the openings come into contact. A conveyor device characterized in that it is supported by a shaft guide attached to a trolley so as to be movable over a distance greater than its position.