JPH0751401B2 - Shuttle conveyor equipment - Google Patents

Description

Description: INDUSTRIAL APPLICABILITY A shuttle conveyor device that repeatedly pushes back and forth a large number of objects to be conveyed by repeatedly reciprocating, and simultaneously conveys a large number of carriages equipped with vehicle bodies to a predetermined position. It is often used in automobile body production lines, etc.
It is also suitable for a parts assembly line or the like in which a large number of pallets on which parts and the like are placed are held at a predetermined interval and simultaneously pushed to a predetermined work position.

2. Description of the Related Art In a conventional shuttle conveyor, as shown in FIG. 5, a long shuttle rod R having one end connected to a reciprocating conveyor chain C has a large number of pushing claws P arranged at equal intervals. Each of the pushing claws P is freely installed and is erected on a pushing trolley T running in a forward guide rail G ₁ and a backward guide rail G ₂ which are vertically arranged along the reciprocating path of the shuttle rod R. ing.

The forward guide rail G ₁ and the return guide rail G ₂ are
Each of the pushing trolleys T is divided at the reciprocating movement start end position and end position, and the respective divided portions are connected by a switching rail S that moves up and down by a lift means L such as a cylinder.

Therefore, automobile bodies B are mounted on a large number of trolleys A, A ... Each of which has an engaging piece D projecting from the lower surface, and these trolleys are pushed by a pushing claw P.
When the switching rail S is moved upward by the lifting operation of the cylinder L, the switching rail S is connected to the outward guide rail G ₁ and is located on the switching rail S. Is raised, the pushing claw P engages with the engaging piece D on the lower surface of the carriage.

Next, when the conveyor chain C is driven forward, the shuttle rod R moves in the direction of arrow A, so that each of the pushing trolleys T travels in the forward guide rail G ₁ and each of the pushing pawls P has a plurality of carriages A, Advance A ... on the floor F in the direction of arrow a.

When the carriage reaches the forward end, the conveyor chain C stops, the shuttle rod R also stops, and the pushing trolleys T are located on the switching rails S arranged at their respective end positions. When each switching rail S is lowered and connected to the return guide rail G ₂ , the feeding trolley T is also lowered together with the switching rail S, and the pushing pawl P is disengaged from the engaging piece D of the carriage.

Then, when the conveyor chain C is moved in the reverse direction and the shuttle rod R is moved back, each of the pushing trolleys T travels in the backward guide rail G ₂ and returns to the switching rail S arranged at the starting end position thereof. Each dolly remains in the forward position.

Hereafter, the same operation is repeated to intermittently push a large number of trucks one unit at a time.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-described conventional technique, the large number of pushing claws P attached to the shuttle rod R are set to the respective engagement pieces D of the large number of carriages.
In order to engage and disengage with each other, lifting means L, L ... such as a plurality of cylinders for raising and lowering each pushing claw P, and each pushing feeding trolley T are moved up and down between the forward guide rail G ₁ and the backward guide rail G _2. A large number of switching rails S and must be provided,
Therefore, the cross-sectional area of the conveyor device becomes large, and the number of movable parts for raising and lowering is large, so that maintainability is poor, and a large number of pushing trolleys provided with the pushing pawls P mounted on the shuttle rod R so as to be able to rise and fall are erected. T generated an impact sound with the shuttle rod during acceleration / deceleration of the shuttle rod and was a cause of noise.

Means for Solving the Problems In order to eliminate the above-mentioned drawbacks of the prior art, the present invention provides a shuttle rod that is supported by a shuttle trolley that is driven to reciprocate on a guide rail so as to be reversibly rotatably inserted and reciprocates together with the shuttle trolley. A plurality of conveying object pushing claws that are provided so as to be spaced apart from each other in the axial direction of the shuttle rod and erected by the reverse rotation of the shuttle rod, a shuttle rod reversing lever rod fixed to the shuttle rod, and along the guide rail. Connected to the forward guide rail for holding the pushing pawl upright to guide the reversing lever rod, and the returning guide rail for holding the pushing pawl to guide the reversing lever rod. Then, the reverse lever rod is switched to the starting end of the return guide rail, and the reverse guide rail is connected to the reverse guide switching reverse rail and the end of the return guide rail to guide the reverse lever rod to the forward guide rail. It is a shuttle conveyor device provided with a forward switching reverse rail for switching to the rail start end.

Action A large number of pushing claws protruding from the shuttle rod are engaged with respective engaging pieces of a large number of conveyed objects that are the starting unit in the standing posture, and the shuttle rod moves forward to become the starting unit. A large number of conveyed objects advance at the same time and stop at the same time by stopping the shuttle rod.

When the shuttle rod is rotated at the stop position to bring the respective pushing claws to the lying posture, the respective pushing claws are suddenly disengaged from the respective engaging pieces of the plurality of conveyed objects.

Therefore, when the shuttle rod is moved back to the original position and stopped immediately below the large number of conveyed objects that are the next unit for pushing, and the shuttle rod is inverted, the respective pushing claws stand up and a large number of next-stage conveyed objects are conveyed. Engage with each engagement piece of the object.

In this way, by rotating the shuttle rod forward and backward at the start and end positions of the reciprocating movement of the shuttle rod and repeating the reciprocating movement, a large number of conveyed objects are simultaneously pushed to a predetermined position.

Example first to fourth Figure is an embodiment of the present invention, a number of carriages A _1, A ₂ ... A _n are each vehicle body B ₁ having wheels running on rails F,
B ₂ ... B _n are loaded and pushed by a shuttle conveyor in the direction of arrow a, and the shuttle conveyor device is composed of a number of rod pieces 1a, 1b ... 1 _n connected by a universal joint J.
And the pushing claws 2,2 protruding from the shuttle rod 1 at equal intervals.
And a shuttle rod reversing lever rod 3 (hereinafter simply referred to as reversing lever rod) 3 fixed to the rear end of the shuttle rod 1, and the shuttle rod 1 rotatably inserted and supported to guide the guide rail 7 (fourth
Shuttle trolley 4, 4 ... (No. 2-5)
(See the figure), the secondary conductor 5 of the linear motor provided on the lower surface of the shuttle trolley 4 at the tip, the primary conductor 6 of the linear motor fixedly mounted on the floor, and the guide rail 7 of the shuttle trolley 4, 4. A forward guide rail (hereinafter referred to as a forward guide guide rail of the reversing lever rod) 8 for holding the pushing pawl 2 in an upright position and guiding the reversing lever rod 3 for traveling and holding the pushing pawl 2 in a lying state for guiding the reversing lever rod. Return guide rail (hereinafter referred to as "reverse lever rod return guide rail") 9
And a return path switching reversing rail 10a which connects to the end of the outward guide rail 8 and switches the reversing lever rod 3 to the start end of the return lodging guide rail 9, and a reversing lever rod 3 which connects to the end of the return lodging guide rail 9. A forward switching reverse rail 10b for switching the forward path to the starting end of the forward guide rail 8, a brake plate 11 vertically provided on the lower surface of the shuttle trolley 4, a shuttle trolley stop positioning pin (not shown) protruding from the shuttle trolley 4, and the like. Have

In FIG. 1, buffer members E, E are provided at both ends of the reciprocating movement of the shuttle rod 1, respectively, and the brake device H and the shuttle trolley for clamping the brake plate 11 on the lower surface of the shuttle trolley. A positioning device K for holding the positioning pin at a fixed position is also provided.

Referring to FIG. 2, the reciprocating movement of the shuttle rod 1 and the reversing and rotating operation of the pushing claw 2 will be described. A large number of pushing claws 2 projecting from the shuttle rod 1 are rotatably inserted and supported by the shuttle trolley 4. In addition, at the rear end of the shuttle rod 1, the reversing lever rod 3 of the pushing claw 2 is provided.
And a guide roller 3a at the tip of the reaction lever rod 3.
Is mounted, the guide roller 3a travels in the forward path standing guide rail 8 that holds the pushing claw 2 in a standing state when pushing the carriage,
When the shuttle rod 1 is returning, it travels in the returning guide rail 9 that holds the pushing claws 2 in a collapsed state, and the forward and backward guide rails 8 and the returning guide rail 9 are provided with cylinders 12a and 12b at the front and rear ends of both rails 8, respectively. At the front and rear ends of 9, switching reversing rails 10a and 10b are provided which are switched and connected to the ends of both rails 8 and 9 by cylinders 12a and 12b, respectively.

Accordingly, when the linear motor is driven to move the shuttle rod forward, the guide roll 3a of the reversing lever rod travels in the forward guide rail 8 and the pushing claw 2 stands up and is locked to the engaging piece D of the carriage. , Push the dolly. Then, the linear motor is stopped to stop the shuttle rod, and when the guide roller 3a of the reversing lever rod 3 stops in the backward switching reversing rail 10a connected to the terminal end of the rail 8, the cylinder 12a operates and the reversing rail 10a. Is switched to the starting end of the return guide rail 9, and the reversing lever rod 3 is also rotated together with the switching reversing rail 10a.
When the shuttle rod 1 is rotated, the shuttle rod 1 is rotated in a reverse direction, and the many pushing claws 2 in the upright state are suddenly reversed to the laid posture, and are disengaged from the engaging piece D of the carriage.

Then, when the linear motor is moved in the reverse direction, the shuttle rod 1 leaves the many carts that have been pushed and returns, and the guide roller 3a of the reversing lever rod moves in the backward collapse guide rail 9 and the shuttle trolley 4 guides the trolley. The rails 7 are returned to their original positions together with the shuttle rod.

When returning to the original position, the guide roller 3a of the reversing lever rod 3 stops in the outward switching reversing rail 10b connected to the terminal end of the backward reclining guide rail 9, and the reversing rail 10b is actuated by the cylinder 12b to move the outward standing guide rail 8b. When the shuttle rod 1 is turned and connected, the shuttle rod 1 reversely rotates and a large number of the pushing claws 2 on the shuttle rod take a standing posture, and engage with the respective engagement pieces D of the next truck group waiting. Then wait forward.

By repeating this operation, a large number of trucks move forward simultaneously and are conveyed to a predetermined position.

FIG. 3 shows the engaging piece D of the truck and the pushing claw 2 of the shuttle rod 1.
FIG. 4 is an enlarged view of the engagement state with and, and FIG. 4 is an explanatory diagram of reversing switching of the switching reversing rail 10b.

EFFECTS OF THE INVENTION According to the present invention, a large number of pushing claws 2 are provided on a single shuttle rod 1, and the shuttle rod is rotated in reverse by a switching reversing lever rod 3 at the reciprocating end of the shuttle rod. Since 2 can be simultaneously switched to a standing posture in which it engages with the carriage and a fall posture in which it disengages from the carriage, it is not necessary to provide a large number of cylinders for lifting and lowering the respective pushing claws to the operating position and the non-operating position as in the prior art. Therefore, the structure is simple and maintenance is easy,
The cross-sectional area of the conveyor does not become large, and the installation space can be saved.In addition, unlike the prior art, each pushing claw is not vertically inserted through the shuttle rod.
Since it is integrated with the shuttle rod, no noise is generated when the shuttle rod is accelerated or decelerated, and the noise is significantly suppressed, which has many excellent effects.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention, FIG. 1 is a schematic front explanatory view, FIG. 2 is an operational perspective view of a shuttle rod, and FIG. 3 is an enlarged front view of a pushing claw reversing lever rod. FIG. 4 is an enlarged side view of the switching reversing rail, and FIG. 5 is a schematic front view of a conventional example. 1 ... Shuttle rod, 2 ... Pushing claw 3 ... Shuttle rod reversing lever rod, 4 ... Shuttle trolley 5,6 ... Linear motor 7 ... Shuttle trolley guide rail 8 ... Outgoing standing guide rail, 9 ... Return trip Falling guide rails 10a, 10b …… Switching reverse rail

Claims (2)

[Claims] 1. A shuttle rod, which is supported by a shuttle trolley that is driven to reciprocate on a guide rail so as to be capable of reversing and rotatable, and reciprocates together with the shuttle trolley. A large number of conveyance object pushing claws that are erected by the reversing rotation, a shuttle rod reversing lever rod fixed to the shuttle rod, and a reversing lever rod that is provided along the guide rail and holds the pushing claws upright. A forward guide rail for traveling guides, a return guide rail for holding the pushing claws in a lying state to guide the reversing lever rod for traveling, and a reverse switching reversing rail for connecting the reversing lever rod to the end of the forward guide rail and switching the reversing lever rod to the starting end of the backward guide rail. , A forward switching reverse rail that connects to the end of the backward guide rail and switches the reverse lever rod to the beginning of the forward guide rail,
Shuttle conveyor device equipped with. 2. The shuttle conveyor device according to claim 1, wherein the shuttle trolley is reciprocally driven by a linear motor.