JPS60236922A - Tray conveyor for sorting - Google Patents

Abstract

PURPOSE:To simplify the construction of a tray conveyor, by supporting a tray on the top of a truck, and rotating a rotor clockwise or counterclockwise on the truck through a rotating operated section to tilt the tray rightward or leftward to sort a cargo from the tray. CONSTITUTION:When a truck 1 carrying a cargo on a tray 5 kept horizontal has reached a sorting place, a rotor 10 is rotated counterclockwise through a left-hand cam-followed roller 11a if a sorting chute is at the right of a conveyance passage. As a result, a pair of right and left support rollers 13a, 13b and a tilting roller 15 are rotated together counterclockwise about a fixed vertical shaft 8 and the tilting roller 15 pushes a movable member 17 leftward through an engaged two-arm portion 24 so that the tray 5 is tilted rightward about a front-to-rear support shaft 7 through a bracket 6 and a pair of guide rods 18 which support the movable member 17. Consequently, the cargo on the tray 5 drops into the right-hand sorting chute.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a sorting tray conveyor that can be utilized in postal, transportation, and other delivery departments of general companies.

(Prior Art) The above-mentioned sorting tray conveyor is particularly constructed so that when the tray reaches a predetermined sorting position, the tray is tilted and the load on the tray slides and falls onto a sorting chute. Conventional tray conveyors, such as the conveyor described in JP-A-52-152071, have a pair of left and right rollers pivoted on the underside of a tray that can be tilted to either the left or right side. The roller is supported by a disc-shaped inclined cam plate rotatable around a vertical axis,
Normally, the pair of left and right rollers are supported by the horizontal portion of the disc-shaped inclined cam to hold the tray in a horizontal state, and when the tray is tilted, the tray is moved to a predetermined sorting position. The disk-shaped inclined cam was rotated by an operating cam on the side of the path, and the tray was configured to be tilted to a predetermined side via the pair of left and right rollers.

(Problems to be Solved by the Invention) In the conventional tray conveyor as described above, when the distance between the pair of left and right rollers on the tray side is increased in order to stabilize the horizontal holding function of the tray, a disk with a very large diameter is created. Not only is the circular inclined cam necessary, but also the circular disk shaped inclined cam is required to keep both of the pair of left and right rollers on the tray side in good contact with the disk shaped inclined cam at all times from a state in which the tray is held horizontally to a state in which the tray is tilted. Since a high degree of precision is required for the plate-shaped inclined cam, manufacturing is not easy and costs are high.

It is an object of the present invention to overcome the drawbacks of the conventional sorting tray conveyor.

(Means and operations for solving the problems) That is, in order to solve the above problems, the present invention provides a pair of left and right supported cams or supported rollers and one supported cam on the tray side. On the movable cart side, in place of the conventional disc-shaped inclined cam, there is provided a pair of left and right supports that support the pair of left and right supported cams or supported rollers and hold the tray horizontally. a supporting roller or a supporting cam, and an engaging member that engages with the secured portion to tilt the tray left and right,
According to the configuration of the present invention, which is provided on a rotating body that is equipped with a rotating operated part and is rotatable around a vertical axis, the rotating operated part is used when tilting the L-ray. By rotating the pair of left and right support rollers or the support cam and the engagement member to either the left or right together with the rotating body, the pair of left and right support rollers or support cams are rotated to the left or right.
At the same time, when the tray is detached from the pair of left and right supported cams or supported rollers on the tray side and becomes capable of tilting to either the left or right side, the engaging member tilts the tray to the left or right via the secured part on the tray side. tilt it in any direction. Then, by rotating and returning the left and right pair of supporting rollers or supporting cams and the retaining member in the opposite direction via the rotating body, the 1-ray is returned to the horizontal position by the engaging member and at the same time The pair of left and right supported cams or supported rollers on the tray side are supported by the pair of left and right supporting rollers or supporting cams, and the tray is held in a horizontal position.

(Example) Hereinafter, the means and effects of the present invention will be specifically explained based on the attached drawings showing one example.

Reference numeral 1 denotes a moving trolley, which includes a horizontal shaft roller 3 that sandwiches a pair of left and right guide rails 2a and 2b installed along the conveyor route from above and below, respectively, and a vertical shaft roller that fits loosely between the guide rails 2a and 2b. 4, which are connected in a chain shape at appropriate intervals. Reference numeral 5 denotes a tray provided on each movable trolley 1, and a longitudinal horizontal support shaft 7 whose front and rear ends are fixed to a bracket 6 connected to the lower side thereof is erected from the movable trolley 1. It is rotatably supported at the upper end of a vertical fixed shaft 8 via a bearing 9. Reference numeral 10 denotes a cylindrical rotating body that is loosely fitted to the vertical fixed shaft 8 so as to only rotate, and a pair of left and right cam driven rollers 11a and 11b are mounted on the front side of the lower end of the body through a bracket 12 as a rotating operated part. A pair of left and right supporting rollers 13a and 13b are supported at their upper ends via a bearing 14 extending left and right and a horizontal support shaft in the left and right direction, and a tilting roller 15 as an engaging member is supported on the upper end thereof. is pivotally supported via a bearing 16 extending rearward and a horizontal support shaft in the longitudinal direction.

Reference numeral 17 denotes a movable body provided on the lower side of the tray 5, which is supported so as to be movable in the front and rear direction by a pair of left and right front and rear guide rails 18 whose front and rear ends are fixed to the bracket 6.
It is biased forward by a compression coil spring 19 loosely fitted to both guide rods 18. Reference numerals 20a and 20b denote a pair of left and right supported cams that are connected to the lower side of the movable body 17, and abut on the pair of left and right supporting rollers 13a and 13b when the tray 5 is in a horizontal state. A horizontal part 21, a downward protruding part 2 continuous to the rear of this horizontal part 21
2, and a sloped portion 2 extending diagonally forward and upward from the horizontal portion 21
It has 3. Reference numeral 24 denotes a bifurcated secured portion connected to the lower side of the movable body 17, which is connected to the tilting roller 15.
It has a recess 24a into which it loosely fits.

In the tray conveyor configured as described above, as shown in the figure, a pair of left and right supporting rollers L3a, 13b are attached to the tray 5.
A pair of left and right supported cams 20a and 20b are connected to the horizontal portion 2.
1, the tray 5 is held in a horizontal state. At this time, since the movable body 17 having the supported cams 2Qa and 20b is urged forward by the spring 19, the protruding portions 2 of the dual-wave support cams 20a and 20b
2 presses the support rollers 13a and 13b forward, respectively, and holds the rotating body 10 in a neutral position.

Further, the bifurcated engaged portion 14 is located in front of the vertical fixed shaft 9, and the tilting roller 15 is located at the center within the recess 24a of the bifurcated engaged portion 24.

By placing a load on the tray 5 held in a horizontal state as described above and moving the moving cart 1 along the guide rails 2a and 2b, the load on the tray 5 is moved along a predetermined path. However, when the moving trolley 1 passes a point, one of the cam driven rollers 11a, 11b (the sorting is done on the side opposite to the chute) is used to sort the load in advance. cam driven roller)
For example, in the case of sorting, if the chute is on the right side of the path, a tray (rolling cam) rotates the rotary body 10 counterclockwise via the cam driven roller 11a. .A tray tilting cam disposed on the side of this path, an actuator for moving the cam in and out, and the cam driven rollers 11a, llb.
Since the means for rotating the rotary body 10 in any right or left direction via the rotor is the same as the means used in conventional tray conveyors for this type of sorting, illustrations and detailed explanation thereof will be omitted.

As a result of the rotating body 10 rotating counterclockwise as described above, the pair of left and right supporting rollers 132, 13b and the tilting roller 15 rotate to the left around the vertical fixed shaft 9. The supporting roller 13a moves the movable body 17 to the spring 1 via the protrusion 22 of the supported cam 20a.
9, the supported cam 2
The horizontal portion 21 of 0b escapes backward from above the left support roller 13b that moves forward. The internal position of the recessed portion 24a is set so that the tilting roller 15 comes into contact with the left side surface of the four portions 24a of the bifurcated engaged portion 24 at exactly this time. As the rotation further progresses, the tilting roller 15 presses the movable body 17 to the left via the bifurcated secured portion 24, so that the pair of left and right guide rods 18 and the bracket 6 that support the movable body 17 are Through this, the tray 5 is tilted downward to the right around the longitudinal support shaft 7 as shown by the imaginary line, and the loads on the tray 5, which are sorted in advance on the right side, slide and fall onto the chute. Due to this tilting of the tray 5, the right supported cam 20b is lowered behind the right supporting roller 13b that has moved forward.

When the tray 5 is to be tilted toward the chute side for sorting on the left side, the tray tilting cam disposed on the right side of the path acts on the right cam driven roller 11b, and the pair of left and right supporting rollers are moved through the rotating body 10. 13a, 13b and the tilting roller 15 may be rotated to the right around the vertical fixed shaft 9.

When the tray 5 tilted as described above is returned to its original horizontal position, the tray return operation cams disposed on the left and right sides of the path move the rotating body 10 through either the cam driven rollers 11a or llb. is rotated in the return direction, and the pair of left and right supporting rollers 13a, 13b and tilting roller 15 are rotated and returned to their original positions shown by solid lines. As a result, the tilting roller 15 tilts the l-ray 5 in the opposite direction around the longitudinal support shaft 7 via the bifurcated secured portion 24 of the movable body 17 and the bracket 6, and the l-ray 5 Immediately before the horizontal position is reached, the supporting rollers 13a and 13b that move backward move from the inclined part 23 of the supported cam that moves upwards to the horizontal part of the pair of left and right supported cams 20a and 20b. By slipping under 21, the tray 5 returns to its original horizontal position and is maintained.

Note that supported rollers are provided in place of the left and right pair of supported cams 20a and 20b provided on the tray 5 side, and the left and right pair of support rollers 13a provided on the movable trolley 1 side.
, 13b may be replaced with a supporting cam.

(Effects of the Invention) According to the tray conveyor of the present invention, the sorting of the present invention, which can be carried out as described above, utilizes the operated part (cam driven rollers 11a and 1lb in the embodiment) for rotating the rotating body on the movable cart side. By rotating the tray to the left or right, the tray can be tilted to the left or right, and the loads on the tray can be sorted.In particular, according to the configuration of the present invention, the diameter A large disk-shaped inclined cam is not necessary, and instead of this disk-shaped inclined cam, a pair of left and right supporting rollers or supporting cams (supporting rollers 13a and 13b in the embodiment), each of which is a small part, is used. Since it is sufficient to provide one engaging member (the tilting roller 15 in the embodiment) on the rotating body on the movable trolley side, manufacturing is easy. Moreover, the means for holding the tray horizontally and the means for tilting the tray are provided separately, compared to the conventional case where both functions are performed by one means, that is, a disc-shaped tilting cam. Therefore, each means can be designed easily, and each function can be reliably and satisfactorily performed.

In addition, the tray is supported on the movable cart so that it can only be tilted left and right around the longitudinal axis, and unless the rotating body on the movable cart is rotated, no external force will act on the tray in any direction. However, there is no risk that the tray will tip over unexpectedly. Therefore, when a load is placed on the tray, there is no risk of the tray being tilted due to external force acting on the tray, and the tray can always be used safely.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a rear entrance showing essential parts of an embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a partially longitudinal front view showing the whole, and Figs. 5 is a vertical sectional side view taken at a different position from FIG. 2, and FIG. 6 is a sectional plan view of the main part. 1... Moving trolley, 2a, 2b... Guide rail, 5
... Tray, 7... Horizontal support shaft in the longitudinal direction, 8... Vertical fixed shaft, 10... Cylindrical rotating body, lla, llb...
・Cam driven roller (operated part for rotation), 13a, 13
b...Supporting roller, 15...Tilt roller (
(engaging member), 17...movable body, 18...gaitro・
Throat, 19... Compression coil spring, 20a, 20
b...cover 2

Claims (1)

[Claims] A pair of left and right supported cams or supported rollers and one engaged portion are installed on the underside of a tray that is pivotably supported around a longitudinal axis on a movable trolley that moves on a conveyor path so that it can only be tilted left and right. A rotary body rotatable around a vertical axis is provided on the movable cart side, and the pair of left and right supported cams or supported rollers are supported by the rotary body to hold the tray horizontally. A sorting tray conveyor comprising a pair of left and right supporting rollers or supporting cams, an engaging member that engages with the engaged portion to tilt the tray left and right, and a rotating operated portion.