JPH0656239A - Article conveying device - Google Patents

Abstract

PURPOSE:To provide an article conveying device capable of shrinking the gap formed between adjacent rollers. CONSTITUTION:Multiple frame bodies 12 are arranged in parallel in the width direction, roller fitting shafts 36 are fitted in the width direction at both ends of the frame bodies 12 via brackets 31, rollers 14 freely rotatable centering on the width direction axis 13 are outwardly coupled with both end sections of the roller fitting shafts 36, C-shaped stop rings 39 to stop the dropping of rollers 14 are provided, recesses 38 are formed on the outside faces of the rollers 14, the C-shaped stop rings 39 and both ends of the roller fitting shafts 36 are stored in the recesses 38, and a belt 15 is stretched between the rollers 14 at both ends of individual frame bodies 12. When multiple frame bodies 12 are provided in parallel in the width direction, the end sections of the roller fitting shafts 36 are not made obstacles between the adjacent rollers 14, and the gap S formed between the adjacent rollers 14 can be shrunk.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article conveying device such as a belt conveyor.

[0002]

2. Description of the Related Art Conventionally, as this type of article conveying apparatus,
For example, there are those shown in FIGS. 9 and 10. That is, a main conveyor 61 that conveys articles is installed along the main conveyance path 60, and a sub-conveyor 62 that joins the main conveyor 61 at an angle is provided. This sub-conveyor 62 is a loading-side conveyor 63 into which articles are loaded, an intermediate conveyor 64 adjacent to the loading-side conveyor 63, and a delivery-side conveyor that is adjacent to the intermediate conveyor 64 and delivers the articles to the main conveyor 61.
65 and a support frame 66 that supports the conveyors 63, 64, 65
It is formed from and.

The input side conveyor 63 and the intermediate conveyor 64
Is a single belt conveyor composed of a single endless belt 67. The intermediate conveyor 64 is provided with a length detection device (not shown) for detecting the length of the article conveyed from the input side conveyor 63, and the delivery side conveyor 65 based on the detected length of the article. Drive is controlled.

The delivery-side conveyor 65 includes a plurality of frame bodies 70 arranged side by side in the width direction, rollers 72 provided at both ends of each frame body 70 and freely rotatable around a width direction axis 71.
It is formed by a belt 73 wound between rollers 72 at both ends of each frame body 70. That is, each frame body 70
Roller mounting shafts 75 are mounted in the width direction on both ends of the roller via brackets 74, and the rollers 72 are externally fitted to both ends of the roller mounting shaft 75, respectively. Roller mounting shaft
A C-shaped retaining ring 76 for preventing the rollers from coming off is externally fitted to both ends of the roller 75 and is in contact with the outer surface of each roller 72.

[0005]

However, according to the above-mentioned conventional type, in order to mount the C-shaped retaining ring 76 on both ends of the roller mounting shaft 75, the both ends of the roller mounting shaft 75 are located outside the outer surface of the roller 72. Was also projected outward. Therefore, when a plurality of frame bodies 70 are arranged side by side in the width direction,
A gap S has to be formed between the adjacent rollers 72 in accordance with the amount of protrusion of the roller mounting shaft 75 protruding from the outer surface of the roller 72, which causes a gap between the adjacent belts 73. was there.

The present invention solves the above problems, and an object of the present invention is to provide an article conveying apparatus capable of reducing a gap formed between adjacent rollers.

[0007]

In order to solve the above problems, an article conveying apparatus according to the present invention has a plurality of frame bodies arranged side by side in the width direction, and roller mounting shafts are provided at both ends of each frame body via brackets. It is mounted in the width direction, and at each end of each roller mounting shaft, a roller that is freely rotatable around the axis in the width direction is externally fitted, and a stopper for preventing the roller from slipping is provided, and a recess is formed on the outer surface of each roller. However, each stopper and both ends of the roller mounting shaft are housed in the recess, and an endless rotary body is wound between the rollers at both ends of each frame body.

[0008]

According to the above construction, the stopper and both ends of the roller mounting shaft are housed in the recess formed on the outer surface of each roller, so that when a plurality of frame bodies are arranged side by side in the width direction, they are adjacent to each other. The ends of the roller mounting shafts do not get in the way between the rollers, and therefore the gap formed between the adjacent rollers can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 2 and 3, reference numeral 1 denotes a tray tumbling type sorting conveyor, and a plurality of tumblable trays 2 are installed movably along a main transport path 3 by chain drive. Reference numeral 4 is a sub-conveyor that joins the sorting conveyor 1 obliquely (an example of an article conveying device).
Is. According to this, the carried-in article is sent from the sub-conveyor 4 to the sorting conveyor 1 and is conveyed to the designated destination.

The sub-conveyance path 5 of the sub-conveyor 4 is inclined at an angle of α = 45 ° with respect to the main conveyance path 3.
The sub-conveyor 4 includes a frame-shaped support frame 7, support legs 8 for supporting the support frame 7, a loading side conveyor 9 into which articles are loaded, an intermediate conveyor 10 adjacent to the loading side conveyor 9, and an intermediate portion. It is formed of a delivery side conveyor 11 that delivers articles to the sorting conveyor 1 adjacent to the partial conveyor 10.

That is, as shown in FIGS. 4 to 6, each of the conveyors 9, 10 and 11 is supported by the support frame 7 and is arranged in parallel in the width direction.
And attached to both ends of each frame body 12 and
(See FIG. 1) A roller 14 that is freely rotatable around the belt 14 and a belt 15 that is wound between the rollers 14 at both ends of each frame body 12.
(An example of an endless rotating body).

Further, as shown in FIG. 3, on the back side of the support frame 7, electric motors 43, 44, 45 for rotating the belts 15 via drive rollers 42 are provided for the respective conveyors 9, 10, 11. It is provided.

As shown in FIG. 7, the frame body 12 is an aluminum extruded material having a square cross section, and a guide groove 18 is formed on the upper surface in the longitudinal direction. Also, the frame body 12
A through hole 19 for positioning and a bolt hole 20 are formed in the central portion of the in the longitudinal direction.

Dovetail grooves 21 and 22 are formed on the lower surface and both side surfaces of the frame body 12 in the longitudinal direction, and each adjacent frame body 12 has a tap plate 23 inserted into the lower surface dovetail groove 21. They are connected to each other by a connecting plate 25 via bolts 24. A plurality of frame bodies 12 connected by a connecting plate 25 are support plates installed between the support frames 7.
Mounted on 26. Of these, the tap plates in which the frame bodies 12 located at both ends are inserted into the side dovetail groove 22.
23, bolts 24, nuts 27 and angle-shaped fixing plate 28
It is fixed to the support plate 26 by.

As shown in FIGS. 1 and 8, brackets 31 for attaching the rollers 14 are detachably attached to both ends of each frame body 12 via bolts 32. The bracket 31 is formed of a contact plate 31a that can be applied to both end surfaces of the frame body 12 and an arm portion 31b that is erected from the surface of the contact plate 31a. The bolt 32 is inserted into a bolt insertion hole 33 formed in the attachment plate 31a and screwed into the bolt hole 20 of the frame body 12. Positioning pins 34 are provided on the back surface of the contact plate 31 a, and the positioning pins 34 are fitted into the positioning through holes 19 of the frame body 12. In addition, the frame plate 12 is attached to the contact plate 31a.
A guide groove 35 that communicates with the guide groove 18 provided in the is formed.

A roller mounting shaft 36 is inserted in the width direction at the tip of the arm portion 31b of the bracket 31. The rollers 14 made of ball bearings are externally fitted to both ends of the roller mounting shaft 36. Recesses 38 are formed on both outer side surfaces of each roller 14. Further, a C-shaped retaining ring 39 (an example of a retaining member) for retaining the roller is externally fitted to both ends of the roller mounting shaft 36 and is in contact with the side surface of the recess 38. The C-shaped retaining ring 39 and both ends of the roller mounting shaft 36 are housed in the recess 38 of each roller 14.

A guide protrusion is provided at the center of the back surface of the belt 15.
41 is formed in the length direction, and the belt 15 is formed.
Is wound while the guide protrusion 41 is fitted between the pair of rollers 14. The guide protrusion 41 is guided in the length direction by the guide groove 35 of the bracket 31 and the guide groove 18 of the frame body 12.

As shown in FIG. 2, the loading side conveyor 9 is
On the side of the starting end of the above, a mounting table 46 for mounting the carried-in article is connected to the support frame 7. The placing table 46 is provided with a setting device 47 for designating a destination of the article.

As shown in FIG. 5, on the support frame 7, a projector 48 and a photoreceiver 49 of a photoelectric switch for detecting the length of an article conveyed on the intermediate conveyor 10 are opposed to each other in the width direction. The electric motor 45 of the delivery side conveyor 11 is controlled based on the length of the attached article detected.

The operation of the above structure will be described below.
As shown in FIG. 1, the C-shaped retaining ring 39 and both ends of the roller mounting shaft 36 are housed in the recesses 38 formed on the outer side surface of each roller 14, so that the plurality of frame bodies 12 are moved in the width direction. When they are arranged side by side, the ends of the roller mounting shafts 36 between adjacent rollers 14 do not get in the way. Therefore, the gap S formed between the adjacent rollers 14 can be reduced.

The articles carried by the trolley or the like are once placed on the placing table 46, and then transferred to the starting end portion of the loading side conveyor 9 by the worker, and transferred from the loading side conveyor 9 to the intermediate conveyor 10. Be transported. Then, as shown by the solid line in FIG. 5, the front end of the article 50 blocks the light of the projector 48, and then the rear end of the article 50 passes in front of the projector 48 and the light of the projector 48 is emitted as shown by the phantom line. The time required to reach the light receiver 49 and the transport speed of the intermediate conveyor 10 detect the length of the article 50, and the center point 51 of the article 50 is detected from the detected length.
Is calculated.

Further, as shown in FIG. 6, when the article 50 is transferred from the intermediate conveyor 10 to the delivery side conveyor 11, the electric motor 45 is driven based on the calculated center point 51 of the article 50, and the center of the article 50 is moved. The delivery side conveyor 11 is driven until the point 51 reaches the predetermined position P from the starting end of the delivery side conveyor 11. This allows the main conveyance path 3 from the center point 51 of the article 50.
The distance to can be set constant. Then, when the predetermined tray 2 approaches, the delivery-side conveyor 11 is driven to send the article 50 to the predetermined tray 2, whereby the article 50
Is always placed at the center of the tray 2 and is not biased to the end of the tray 2. After that, the tray 2 on which the article 50 is placed
When the tray reaches the designated destination, the tray 2 falls and the articles 50 are sorted by the sorting conveyor 1 for each destination.

In the above-mentioned embodiment, the C-shaped retaining ring 39 is provided as an example of the stopper, but this may be provided with split pins at both ends of the roller mounting shaft 36.

[0024]

As described above, according to the present invention, a recess is formed on the outer surface of the roller, and stoppers for preventing the roller from being pulled out are provided at both ends of the roller mounting shaft. Since both ends and the rollers are housed in the recesses of the rollers, when a plurality of frame bodies are arranged side by side in the width direction, the ends of the roller mounting shafts do not get in the way between the adjoining rollers, and therefore the adjoining rollers The gap formed between the rollers can be reduced. Therefore, the gap between the adjacent belts can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing a roller mounting structure according to an embodiment of the present invention.

FIG. 2 is a plan view of the article transport device.

FIG. 3 is a side view of the article carrying device.

FIG. 4 is a plan view of a loading side conveyor.

FIG. 5 is a plan view of an intermediate conveyor.

FIG. 6 is a plan view of a delivery-side conveyor.

FIG. 7 is a vertical sectional view of a frame body.

FIG. 8 is a view on arrow AA in FIG.

FIG. 9 is a plan view of an article conveying device in a conventional example.

FIG. 10 is a plan view showing a roller mounting structure in a conventional example.

[Explanation of symbols]

 4 Sub-conveyor (article transfer device) 12 Frame body 13 Width axis 14 Roller 15 Belt (endless rotating body) 31 Bracket 36 Roller mounting shaft 38 Recess 39 C-shaped retaining ring (stopper)

Claims (1)

[Claims] 1. A plurality of frame bodies are arranged side by side in the width direction, roller mounting shafts are mounted in the width direction at both ends of each frame body via brackets, and a width direction axis is provided at both ends of each roller mounting shaft. A freely rotatable roller is externally fitted to the center and a stopper for preventing the roller from being removed is provided, a recess is formed on the outer surface of each roller, and each stopper and both ends of the roller mounting shaft are housed in the recess. An article conveying apparatus, wherein an endless rotating body is wound between rollers at both ends of each frame body.