JPH0640169Y2 - Sorting conveyor device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sorting conveyor device for sorting loaded articles and discharging them in two orthogonal directions or three directions.

Conventionally, in this sort of sorting conveyor device, a belt conveyor is arranged between the rollers constituting the roller conveyor such that the conveying surface of the belt conveyor appears on the roller (Japanese Patent Publication No. 52-7).
No. 237, No. 57-99826).

However, in the above-mentioned No. 57-99826 device, the structure is such that the belt conveyor is moved up and down for each drive unit,
The weight is large and the elevator becomes large.

Further, in the above apparatus, since the pulley for erection of the belt is moved up and down together with the drive unit, the tension of the belt does not change due to the up and down movement, and it is not necessary to consider the belt tension mechanism.

Further, the apparatus of Japanese Patent Publication No. 52-7237 has a structure in which the drive unit and the belt conveyor are fixed, and the belt conveying surface of the belt conveyor is projected onto the rollers by moving up and down the guide member.

However, in the above-mentioned device, although the above-mentioned inconvenience that the elevator is increased in size can be solved, inconvenience is found in the specific structure of the tension mechanism required in this system.

That is, the above device adjusts the tension of the belt as the guide member (53) moves up and down by the take-up (60). The take-up (60) is provided inside the case (61). A bearing (62) that can move up and down along a guide, and a take-up vehicle (63) axially supported by this bearing.
And spring pressure adjustment bolt (64), spring receiver (65), spring (6
6), the structure is complicated, the assembly work is troublesome, and the number of parts is large and the cost is high. Moreover, when the belt (35) is moved upward, the spring (66) of the take-up (60) is compressed, so that the tension of the belt increases, which is a factor of impairing the durability of the belt.

Further, in the above-mentioned device, when the belt (35) is moved upward by raising the guide member (53), the flat plate-shaped guide (54) arranged on the upper part of the guide member (53) always operates the belt (35). It is in contact with the back surface of 35), and the belt (35) is worn, which is also a factor that impairs the durability of the belt.

In view of such circumstances, the present invention intends to provide an inexpensive conveyor device which can effectively adjust the tension of the belt accompanying the vertical movement of the belt, enhance the durability of the belt, and have a simple structure. It is a thing.

Such a conveyor device of the present invention is a sorting conveyor device in which a belt conveyor is arranged between rollers constituting a roller conveyor so that the conveying surface of the belt conveyor appears above and below the roller. A member is provided so as to be vertically movable by an elevating mechanism, and the operating member includes a flat plate-shaped guide member and at least two rotatable guide pulleys arranged in front of and behind the guide member. The upper and lower guide pulleys are provided so as to be slightly lower than the upper ends of the front and rear guide pulleys, and the upper end of the guide pulley presses the back surface of the upper belt when the operating member is moved upward so that its conveying surface is projected onto the roller. When an article is not placed on the carrying surface when the carrying surface is projected onto the roller, the back surface of the upper belt is the guide member. A state that does not contact the surface, and the lower end of the guide pulley during downward movement of the actuating member, characterized in that the allowed to press the back surface of the lower belt.

An embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, as shown in FIG. 1, a plurality of rollers (b) constituting a roller conveyor (B) are arranged in parallel at appropriate intervals, and a belt conveyor is provided between these rollers (b). (A) is arranged respectively and the rollers (b) ...
It shows a case where the articles (C) that have been carried in are sorted and carried out in three orthogonal directions by rotating in the forward and reverse directions.

In the belt conveyor (A), four pulleys (1) are arranged rotatably in the vicinity of both side surfaces of the device, two pulleys are rotatably provided, and the upper two of these pulleys (1) ... Install the roller (b) so that it does not protrude from the roller (b). Then, an annular belt (2) is stretched over these pulleys (1) ... And driven by linking one of the pulleys (1) ... With a drive motor (3) by a drive belt (4). The part (a1) is constituted, and the driving part (a1) is operated to move the conveying surface (a2) which is the upper surface of the belt (2).

Further, an actuating member (a3) is provided in the center of the inside of the belt conveyor (A), that is, between the upper and lower belts (2 ') (2 ").

The actuating member (a3) is provided in front of and behind the guide member (a4) in the belt (2) direction with respect to the guide member (a4).
A plurality of guide pulleys (a5) (a5) are provided at predetermined intervals, that is, at intervals between the belts (2), and a plurality of sets of these guide members (a4) are provided as a pair of fixed shafts (5) (5). ), And the front and rear guide pulleys (a5) (a5) ... are rotatably attached by pivots (6) and (6) respectively, and the fixed shafts (5) (5) and pivots (6) (6) are attached. The mounting plates (7) and (7) are fixed to both ends of each to form an integral unit. At this time, the two guide pulleys (a
5) (a5) are arranged so that their upper ends are located slightly above the upper surface of the guide member (a4).

Further, the actuating member (a3) has a support plate (8) formed in a substantially sectional shape fixed to the lower part of the mounting plates (7) (7), and connected to the bottom portion (9) of the support plate (8). Lifting mechanism (a
6) Allow more vertical movement.

In the case of the present embodiment, the guide member (a4) is formed in a plate shape, at least the upper surface of which is made of a material having a small friction coefficient, and the upper surface is arranged slightly lower than the upper ends of the guide pulleys (a5) (a5). By doing so, when the article (C) is not placed on the belt (2), the upper belt (2 ') does not come into contact with the upper surface of the guide member (a4) and the belt (2) wears. Prevent.

The elevating mechanism (a6) is substantially parallel to the four arm rods (11) with the long holes (10) (10) opened at both ends and the lower side of the operating member (a3) along both sides. Standing mounting plate (12) (12)
With an operating rod (13) installed horizontally between them and an electric signal
When turned on, the solenoid (1
5) consists of and.

These arm rods (11) ... are long holes (10) opened at one end.
Are pivotally attached to the protrusions (16) protruding from the four corners of the bottom surface (9) (9) of the support plate (8) so as to be rotatable in the belt (2) direction. The arm rods (11) are rotated inwardly in a substantially horizontal state, and the intermediate portions thereof are rotatable with respect to fulcrum shafts (17) protruding from the inside of the mounting plates (12) (12). And the operating rod (13) in the long hole (10) ...
To work together.

That is, four arm rods (11) are attached to one operating rod (13), and the intermediate portion of the operating rod (13) is connected to the upper end of the plunger (14) of the solenoid (15).

Next, the operation of the elevating mechanism (a6) will be described. Normally, since the operating member (a3) of the belt conveyor (A) is lowered by its own weight, the belt (2) moves the conveying surface (a2) ... to the roller conveyor (a2). It is buried between rollers (b) ... of B). Due to this, the upper surface of the guide member (a4) is separated from the rear surface of the upper belt (2 '), and both guide pulleys (a5)
(A5) ... presses the back surface of the lower belt (2 ″) ... to stretch the entire belt (2).

Therefore, at this time, the article (C) carried into the sorting conveyor device is carried out in the rotation direction of the rollers (b).
Figure).

When the solenoid (15) is turned on by an electric signal, the plunger (14) moves downward, the arm member (11) moves to raise the actuating member (a3), and both guide pulleys (a5).
(A5) ... Presses the back surface of the upper belts (2 '), and their conveying surfaces (a2) ... Project above the rollers (b).
At this time, the guide members (a4) also rise, but they do not contact the back surface of the upper belts (2 ') ... (Fig. 5).

Therefore, the sorting conveyor device of this embodiment applies a predetermined tension to the belt (2) even when the guide pulleys (a5) (a5) are moving downward, so that the belt (2) is loosened and moves in the left-right direction. Roller (b) of roller conveyor (B)
The contact with the roller conveyor (B) does not hinder the conveyance by the roller conveyor (B).

Further, the mounting plates (12) (12) are provided with a lock mechanism (a7) for locking the operating rod (13).

The lock mechanism (a7) has two vertical rods (20) (20) having an inclined surface (18) at its upper end and locking recesses (19) that engage with the left and right ends of the operating rod (13), and one end. Two horizontal rods (22, 22) urged in one direction by providing a spring (21) on the movable rod (2) horizontally installed between the mounting plates (12, 12).
3) and a solenoid (25) that closes the plunger (24) when turned on by an electric signal.

The vertical rods (20) (20) have their intermediate portions attached to the mounting plate (1
2) The fulcrum shafts (26) (26) projecting from the outside of the (12) are rotatably pivoted respectively, and the horizontal rods (22) (22) are attached to the lower ends of the vertical rods (20) (20). ) Of the horizontal rods (22) (22) and the movable rod (2
Connect the three by inserting the left and right ends of 3) respectively.

The intermediate portion of the movable rod (23) connects the tip of the plunger (24) of the solenoid (25).

Next, the operation of the lock mechanism (a7) will be described. The operating member (a3) descends so that the conveyor surfaces (a2) of the belt conveyors (A) ... Rollers (b) of the roller conveyors (B).
In the state of being embedded between them, the plunger (24) of the solenoid (25) is projected, and the left and right ends of the operating rod (13) are located above the vertical rods (20) (20) (fourth).
Figure).

The solenoid (1
When 5) is actuated, the plunger (14) moves downward to raise the actuating member (a3).

Inclined surface (18) formed on the upper end of the vertical rod (20) (20)
The left and right ends of the operating rod (13) are moved downward along the (18), and the vertical rods (20) (20) are rotated accordingly against the springs (21) (21). The left and right ends of the operating rod (13) are engaged and locked in the locking recesses (19) (19), respectively.

When lowering the actuating member (a3), the solenoid (25) of the lock mechanism (a7) is turned on by the energizing signal of one pulse, and the plunger (24) is retracted against the springs (21) (21). By rotating the vertical rods (20) (20) through the movable rod (23) and the horizontal rods (22) (22) connected thereto, as shown in FIG. 6, the locking recesses (19) (19). When the locks on the left and right ends of the operating rod (13) are released, the solenoid (15) of the lifting mechanism (a6) is normally off, and the operating member (a3) projects by its own weight.

Thus, the sorting conveyor device drives the solenoid (15) of the lifting mechanism (a6) to dispose the guide member (a4) on the operating member (a3) and the front and rear guide pulleys (a5) (a5).
5) ... only by moving up and down, without moving the drive section (a1) of the belt conveyor (A) ...
2) can be made to appear and disappear on the roller (b) of the roller conveyor (B).

In the embodiment shown above, the plurality of rollers (b) ... Constituting the roller conveyor (B) are rotated in the forward and reverse directions to sort the articles (C) that have been carried in and carry them out in three orthogonal directions. However, the present invention is not limited to this, and a plurality of rollers (b) are rotatably arranged and the upper surface of the rollers (b) is inclined to the left or right, so that the article is carried in. (C) may be sorted and carried out in two orthogonal directions. The belt (2) may be a timing belt, in which case a guide pulley (a5)
(A5) has a gear shape.

Since the present invention is as described above, the following beneficial effects can be obtained.

I. An operating member provided with a guide member and rotatable guide pulleys arranged in front of and behind the guide member is vertically movably arranged between the upper and lower belts, and the conveying surface is projected onto the roller by the upward movement of the operating member. Therefore, the structure is simpler, the weight is lighter, and the efficiency is higher than that of the conventional one in which the belt conveyor is moved up and down together with the drive unit.

B. Also, due to the upward movement of the operating member, the guide pulley presses the back surface of the upper belt so that its conveying surface projects above the roller, and the guide pulley presses the back surface of the lower belt when the operating member moves downward. Since the substantially equal tension acts on the belt when it moves up and down to increase the durability of the belt, the tension mechanism that applies tension to the belt is the member itself that moves the belt up and down. It is significantly simplified, easy to manufacture, and inexpensive.

C. Further, according to the present invention, the plate-shaped guide member and the guide pulleys arranged in front of and behind the guide member are arranged such that the upper surface of the guide member is slightly lower than the upper end of the guide pulley, and When there is no article on the belt even when the belt is projected on the roller by the motion, only the rotatable guide pulley contacts the back surface of the belt and pushes it up, and the upper surface of the guide member. Since it does not contact the back surface of the belt, unnecessary wear of the belt is prevented and the durability of the belt is increased.

[Brief description of drawings]

FIG. 1 is a plan view of a sorting conveyor device showing an embodiment of the present invention, and FIG. 2 is an enlarged sectional view taken along line (II)-(II) of FIG. FIG. 3 is an enlarged cross-sectional view taken along the line (III)-(III) of FIG. 2, FIG. 4 is an enlarged side view of the lock mechanism, and FIG. 5 is a belt conveyor moved upward. FIG. 6 is a sectional view showing the state, FIG. 6 is a side view showing the operating state of the lock mechanism, and FIG. 7 is a perspective view of the operating member. A: Belt conveyor, a2: Transport surface a3: Actuating member, a4: Guide member a5: Guide pulley, 2 ... Belt B ... Roller conveyor, b ... Roller

Claims (1)

[Scope of utility model registration request] 1. A sorting conveyor device in which a belt conveyor is arranged between rollers constituting a roller conveyor so that a conveying surface of the roller conveyor appears above and below the roller. Is provided so as to be movable up and down by means of a flat plate-shaped guide member,
At least two freely rotatable guide pulleys disposed in front of and behind the guide member are provided such that the upper surface of the guide member is slightly lower than the upper ends of the front and rear guide pulleys. When the upper end of the guide pulley presses the back surface of the upper belt during upward movement so that the conveyance surface projects above the roller, and when the conveyance surface projects above the roller, the article is placed on the conveyance surface. When not present, the rear surface of the upper belt is not brought into contact with the upper surface of the guide member, and the lower end of the guide pulley presses the lower surface of the lower belt when the operating member moves downward.