JPH08133466A - Conveyor equipment - Google Patents

Abstract

PURPOSE: To dispense with a driving device of an endless carrying belt to feed an article onto a branched conveyor. CONSTITUTION: When a horizontally oscillating arm 51 is in its actuating position, an endless carrying belt 44 are projected upward of a carrying surface, and a driven wheel is placed between a driving wheel 58 and an auxiliary wheel 59 so as to be abutted thereon from the side. The rotation of a driving rotary shaft 28 is transmitted to the endless carrying belt 44 through the driving wheel 58 and a driven wheel, and the endless carrying belt 44 is driven so as to move the carrying surface 44a forward. As a result, an article W which is carried on a main roller conveyor and hit by a carrying surface 44a of the endless carrying belt 44 is fed onto a branched roller conveyor.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a conveyor device.

[0002]

2. Description of the Related Art Conventionally, the following types of conveyor devices have been known. That is, the main conveyor, a branch conveyor branching from this main conveyor, sending out the article to this branch conveyor, horizontally swingable so as to project above the conveying surface of the main conveyor or to retreat from it, parallel It is known to have an endless transport belt in which parts are arranged side by side, a drive device that drives the main conveyor, a drive device that drives the branch conveyor, and a drive device such as a motor that drives the endless transport belt. ing.

[0003]

Disadvantages of the Prior Art The conventional conveyor device has the following drawbacks. That is, since a drive device such as a motor for driving the endless transport belt has to be provided separately from the drive devices for the main conveyor and the branch conveyor, there is a drawback that the cost is high.

[0004]

[Means for Solving the Disadvantages] The present invention employs the following means in order to eliminate the above disadvantages. The present invention
A main conveyor, a branching conveyor that branches from this, and articles that are sent to the branching conveyor, horizontally oscillated so as to project above the conveyor surface of the main conveyor and to leave from it, parallel parts are arranged side by side And an endless transport belt, and the endless transport belt receives power from a drive device for the main conveyor or the branch conveyor at a position where the endless transport belt projects above the transport surface.

[0005]

The present invention has the following functions. When the endless conveyor belt projects above the conveyor surface of the main conveyor, the endless conveyor belt is designed to receive power from the drive device of the main conveyor or branch conveyor. It is not necessary to provide a drive device for

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments with reference to the drawings. In this specification, the front means the side on which the conveyed article is sent, the rear means the opposite side, the left means the left side with respect to the conveying direction of the conveyed article, and the right means the right side.

The conveyor device 41 includes a main roller conveyor 42, a branch roller conveyor 43 branched from the main roller conveyor 42, and a branch roller conveyor 4
Main roller conveyor 4 for sorting and sending articles W to 3
2 has an endless conveyor belt 44 formed of an endless belt, which will be described later in detail and is horizontally swingable so as to project above the second conveyor surface 42a and retract from the second conveyor surface 42a.

As shown in FIGS. 2 to 4, the main roller conveyor 42 has left and right side walls 3 constituting the base frame 2 and bearings 7 and 8 provided on these side walls 3 with their axial centers in the left and right directions. It has a roller shaft 5 passed in a state of being directed, and a carrier roller 6 rotatably fitted on these roller shafts 5.

The bearing 7 supports one roller shaft 5, while the bearing 8 supports two (one set) roller shafts 5. Further, the bearing 8 is
It is integrally formed with a bracket 13 described later.

The main roller conveyor 42 has a plurality of zones 10 which are divided at predetermined intervals longer than the articles W in the carrying direction.

Next, the transmission 12, that is, the same bearing 8
Supported by the pair of carrier rollers 6 so as to be positioned below the pair of carrier rollers 6, that is, so that the axis of a rotary shaft 17 described later is located in the center between the axes of the carrier rollers 6. Then, the transmission 12 having the bracket 13 attached to the side wall 3 of the main roller conveyor 42 will be described. The transmission device 12 has a bracket 13 integrally formed with the bearing 8.
And a pivot 15 whose axis is parallel to the mounting surface 14.
A bearing 16 is provided so as to be vertically swingable, and a rotary shaft 17 is rotatably fitted to the bearing 16 such that the axis of the bearing 16 is orthogonal to the mounting surface 14, and the rotary shaft 17 has a transmission roller 18 and a wheel. 19 is stopped.

With such a structure, the transmission roller 18 side of the bearing 16 is swung upward to bring the transmission roller 18 into contact with the pair of front and rear carrier rollers 6, thereby rotating the transmission roller 18 one pair forward and backward. Can be transmitted to the carrier roller 6 of the bearing 16, and on the other hand, the transmission roller 18 side of the bearing 16 can be swung downward to move the transmission roller 18
By moving the carrier roller 6 away from
The rotation of the transmission roller 18 can be prevented from being transmitted to the carrier roller 6. In this embodiment,
By bringing the transmission rollers 18 into contact with the pair of front and rear carrier rollers 6, it is possible to rotate the two carrier rollers 6 with one transmission roller 18 and reduce the number of the transmission rollers 18. However, the transmission roller 18 may be provided directly below the carrier roller 6, and one transmission roller 18 may rotate only one carrier roller 6. The axis of the bearing hole of the bearing 8 for the roller shaft 5 is parallel to the axis of the rotary shaft 17.

The brake shoe 2 is provided on the upper surface of the swinging bearing 16 opposite to the transmission roller 18 with the pivot 15 as a boundary.
0 is provided. When the transmission roller 18 swings downward and does not come into contact with the carrier roller 6, the brake shoe 20 swings upward like a seesaw and comes into contact with the carrier roller 6 to come into contact with the carrier roller 6.
It prevents the rotation of.

An operated piece 21 is provided in a hanging shape at a lower portion of the bearing 16, and a portion below the pivot 15 of the operated piece 21 is pushed by an operating device 22 such as a linear solenoid provided on the bracket 13. The transmission roller 18 can be brought into contact with the carrier roller 6. If the actuating device 22 does not push the actuated piece 21, the transmission roller 18 separates from the carrier roller 6 by its own weight and the tension of the round belt 30 described later. When the transmission roller 18 stops contacting the carrier roller 6, the brake shoe 20 contacts the carrier roller 6 and blocks the rotation of the carrier roller 6 as described above. That is, with such a structure, the carrier roller 6 can be rotated or blocked by one transmission device 12.

The bracket 13 of the transmission 12 has a side wall 3
It is attached to the side wall 3 by screwing a bolt into a nut fitted in the T groove through a bolt insertion hole formed in the bracket 13.

A bearing 27 provided on a connecting bar 26 which is provided on the left and right side walls 3 at a predetermined interval in the front-rear direction is constantly rotated by a motor (not shown) with its axis oriented in the front-rear direction. The drive rotary shaft 28 is
2 More specifically, it is rotatably fitted so as to be located below the wheel 19. A wheel 29 is fitted to the drive rotary shaft 28 in correspondence with the wheel 19, and
A round belt 30 made of synthetic resin such as urethane having a slight elasticity is stretched around the wheel 29 and the wheel 19. With such a configuration, the transmission roller 18
Round belt 30 in a state where it is in contact with carrier roller 6
The rotation of the drive rotation shaft 28 is transmitted to the transmission roller 18, and when the transmission roller 18 is separated from the carrier roller 6, the round belt 30 is loosened and the rotation of the drive rotation shaft 28 is transmitted to the transmission roller 18. It is designed not to be transmitted. "Having a slight elasticity" means that the round belt 30 slightly expands and contracts without impairing its original transmission function.

As apparent from the above description, the main roller conveyor 42 is constituted by the drive rotary shaft 28 and the transmission 12.
The drive device 47 of FIG.

The main roller conveyor 42 (excluding the portion to which the branch roller conveyor 43 is connected) has left and right guide rails 31 so that the article W does not fall off the main roller conveyor 42.

At the front of each zone 10 of the base frame 2,
An article detector (not shown) is provided. As the article detector, transmissive or reflective sensors that use signals such as light, radio waves, and sound waves, and mechanical switches that come into contact with the article W can be used. When the article detector detects the article W, all the actuation devices 2 belonging to the zone 10 on the subsequent side of the zone 10 to which the article detector belongs.
2 is in a non-operating state (a state in which the actuated piece 21 is not pushed) and the transmission roller 18 does not contact the carrier roller 6, while the article W is not detected by the article detector, the actuation device 22 is activated. State (Actuated piece 2
The transmission roller 18 is brought into contact with the carrier roller 6 in a state of pressing 1).

Next, the operation of the main roller conveyor 42 will be described. In a state where all article detectors (not shown) do not detect the article W, all carrier rollers 6 in all zones 10 are rotating. When the article detector detects the article W being conveyed, all the actuation devices 22 in the zone 10 on the trailing side of the zone 10 in which the article detector is located are deactivated, and all the carriers in the zone 10 on the trailing side are deactivated. The rotation of the roller 6 is stopped. That is, the succeeding article W is temporarily stopped before colliding with the article W immediately ahead. Therefore, the article W does not push the front article W or collide with the front article W. When the article W in the preceding zone 10 is sent out, the succeeding zone 1
The operating device 22 of 0 is restored to the initial state, and the article W temporarily stopped as described above is forwarded again.

The branch roller conveyor 43 also has the same structure and operation as the main roller conveyor 42.

There is no member such as the guide rail 31 at the connecting portion between the main roller conveyor 42 and the branch roller conveyor 43 so as not to prevent the movement of the article W from the main roller conveyor 42 to the branch roller conveyor 43. Needless to say.

As shown in FIGS. 5 to 9, a mounting plate 49 is provided on the side wall 3 at the end of the main roller conveyor 42 opposite to the rear end of the side to which the branch roller conveyor 43 is connected. Support shaft 5 with the axis centered vertically in 49
0 is provided, and a horizontal swing arm 51 is attached to the support shaft 50.
However, it is provided such that it can be horizontally swung from the rear end to the front end. The horizontal swing arm 51 has a position that does not project above the transport surface 42a of the main roller conveyor 42 (hereinafter referred to as a retracted position), the transport surface 42a of the main roller conveyor 42, and the left rear end portion of the branch roller conveyor 43. Of the branch roller conveyor 43 that is parallel to the horizontal center line of the branch roller conveyor 43 (hereinafter, referred to as an operating position).
It is designed to be horizontally swingable so that The horizontal swing arm 51 is horizontally swingable by an actuator 52 such as a fluid pressure cylinder.

At the front and rear ends of the horizontal swing arm 51, there are rotatably provided rotary shafts 54 with their axes oriented in the vertical direction. Wheels 55 are fixed to these rotary shafts 54, and the endless transport belt 44 is attached to these wheel 55. Are crossed over so that the parallel portions of the endless transport belt 44 are arranged side by side. When the horizontal swing arm 51 is at the operating position, the parallel portion of the endless transport belt 44 facing the center line side in the left-right direction of the branch roller conveyor 43 is a transport surface 44a. The back surface side of the transport surface 44a is in contact with the hanging portion 51a (see FIG. 8) of the horizontal swing arm 51, and even if the transport surface 44a is pushed by the article W, the hanging portion 51a.
It is supported by a so as not to bend.

The rotary shaft 54 of the wheel 55 on the rear end side projects downward, and the driven wheel 56 is not fitted to the projecting portion of the rotary shaft 54.

The horizontal swing arm 51 will be described in detail later.
The driven wheel 56 abuts when it becomes the operating position and does not abut when it comes to the retracted position. The driving wheel 58 is fixed to the output shaft 68 with its axis oriented vertically, and the output shaft 68 is attached to the mounting plate 49. Bearing bracket 5 provided
7 is rotatably fitted.

Power transmission device 61 having the output shaft 68
Will be described. A wheel 62 is attached to the drive rotary shaft 28.
Is fitted and the wheel 63 facing the wheel 62 is fitted on the transmission shaft 64, and the transmission shaft 64 is
It is rotatably fitted to a bearing provided on the mounting plate 49 so that its axis is parallel or substantially parallel to that of the drive rotary shaft 28. An endless belt 65 is stretched around the wheel 62 and the wheel 63. A bevel gear 66 fitted to the transmission shaft 64 and a bevel gear 67 fitted to the output shaft 68 are meshed with each other. With such a configuration, the rotation of the drive rotation shaft 28 is transmitted to the driving wheel 58.

When the horizontal swing arm 51 is located at the operating position with a predetermined distance beside the driving wheel 58, the driven wheel 56 that is in contact with the driving wheel 58 is brought into contact with the shaft center. The auxiliary wheel 59 having the shaft parallel to or substantially parallel to the axis of the output shaft 68
7 is rotatably provided via a rotary shaft 60. With such a configuration, when the horizontal swing arm 51 is located at the operating position, the driven wheel 56 moves the driving wheel 58.
The auxiliary wheel 59 and the auxiliary wheel 59 come into contact with them from the side.

[0029]

The operation of the embodiment will be described below. When the horizontal swing arm 51 is in the retracted position, the driven wheel 56 is separated from the driving wheel 58. Therefore, naturally, the endless transport belt 44 is not driven. As a result, the articles W conveyed on the main roller conveyor 42
Reach the front of the main roller conveyor 42. On the other hand, when the horizontal swing arm 51 is located at the operating position, the endless transport belt 44 is in a state of protruding above the transport surface 42a, and the driven wheel 56 is laterally disposed between the driving wheel 58 and the auxiliary wheel 59. It comes to come in contact with them from. Therefore, the drive rotation shaft 28
The clockwise rotation in FIG. 6 corresponds to the driving wheel 5
8. The power is transmitted to the endless transfer belt 44 via the driven wheel 56, and the endless transfer belt 44 drives the transfer surface 44a to move forward. As a result, the articles W that have been conveyed on the main roller conveyor 42 and hit the conveyance surface 44a of the endless conveyance belt 44 are diverged roller conveyor 4
Sent to 3. The article conveying speed of the endless conveying belt 44 is set to be equal to or substantially equal to the article conveying speed of the main roller conveyor 42.

[0030]

[Modifications, etc.] Modifications will be described below. (1) The endless transport belt 44 is not limited to the flat belt,
It may be a round belt or a chain. (2) The drive device 47 is not limited to that of the embodiment. (3) The endless transport belt 44 may be driven by the drive device 47 of the branch roller conveyor 43 when the horizontal swing arm 51 is in the operating position. (1) The configuration of the power transmission device 61 is also arbitrary as long as it has the output shaft 68 with the axis centered in the vertical direction.

[0031]

The present invention has the following effects due to the above-described structure. According to the invention of claim 1, when the endless transport belt projects above the transport surface of the main conveyor, the endless transport belt receives the power from the drive device of the main conveyor or the branch conveyor. It is not necessary to provide a drive source such as a motor for the transport belt, and as a result, the cost can be reduced. According to the second aspect of the invention, the driven wheel abuts on the driving wheel rotated by the driving rotary shaft at the position where the endless transportation belt is projected above the transportation surface of the main conveyor. The structure can drive the endless transport belt. According to the invention of claim 3, since the driven wheel is inserted between the auxiliary wheel and the driving wheel so as to contact them laterally, the driven wheel is driven by a wedge-like action. The slip rotation of the driven wheel can be prevented by making sure contact with the driven wheel.

[Brief description of drawings]

FIG. 1 is a simplified plan view showing an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view along the line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is an enlarged view of a part A of FIG.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;

7 is a sectional view taken along line VII-VII in FIG.

8 is an end view taken along the line VIII-VIII in FIG.

FIG. 9 is a simplified plan view showing a state when the endless transport belt is being driven.

[Explanation of symbols]

 41 Conveyor Device 42 Main Roller Conveyor 42a Conveying Surface 43 Branch Roller Conveyor 43a Conveying Surface 44 Endless Conveying Belt 44a Conveying Surface

Claims (3)

[Claims] 1. A main conveyor, a branch conveyor branching from the main conveyor, and a parallel section which is configured to feed articles to the branch conveyor and which is horizontally swingable so as to project above a conveying surface of the main conveyor and to retreat therefrom. A side-by-side endless transport belt, and the endless transport belt receives power from a drive device of a main conveyor or a branch conveyor at a position where the endless transport belt projects above the transport surface. 2. The drive device has a drive rotating shaft arranged below the main conveyor or the branching conveyor so as to be along the carrying direction thereof, and receives rotation from the drive rotating shaft to drive the main conveyor or The branch conveyor is driven, a power transmission device having an output shaft with its axis oriented in the up-down direction is power-coupled to the drive rotation shaft, the driving wheel is not fitted to the output shaft, and the endless conveyor belt is mainly used. The driven wheel fixed to a wheel having an axial center on which the endless transport belt is hung is arranged to abut on the driving wheel at a position protruding above the transport surface of the conveyor. Conveyor equipment. 3. An auxiliary wheel having an axial center in the up-down direction is rotatably provided on the side of the driving wheel at a predetermined interval so as to contact the auxiliary wheel and the driving wheel laterally. The conveyor device according to claim 2, wherein the driven wheel is inserted.