JPH0632444A - Carrying device - Google Patents

Abstract

PURPOSE:To provide a carrying device which carries a work across a plural fabricating processes, can cope with an increase/an decrease in fabricating processes in a simple manner, and does not require a transfer mechanism transferring the work. CONSTITUTION:The device is so constituted as to be equipped with a truck carry section 2 which allows a carrying truck 10 holding a work to be reciprocated between two fabricating processes, and with a pallet carry section 3 which allows a carrying pallet 26 to be reciprocated between two fabricating processes, in which the truck carry section 2 is overlapped with the pallet carry section 3 in a common fabricating process, and the work 1 is so devised as to be transferred from the carrying truck 10 to the carrying pallet 26 with the carrying pallet 26 of the pallet carry section 3 moved up and down.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device for transferring a work across a plurality of processes.

[0002]

2. Description of the Related Art When a workpiece is processed while it is conveyed over a plurality of steps, a conveying device for conveying the workpiece is provided between the steps. Each processing station is provided with a transfer device for transferring a work between the transfer device and the processing station.

[0003]

In the conventional equipment, since the transfer device for transferring the work and the transfer device for transferring the work are used, the structure is complicated and the control is troublesome. In addition, transfer of the work may be considered as a transfer, but the equipment is expensive, and it is not possible to easily cope with the increase or decrease in the number of processing steps.

An object of the present invention is to provide a transfer device that can transfer a work with a simple structure, does not require a transfer device for the work, and can easily cope with an increase or decrease in the number of processing steps.

[0005]

SUMMARY OF THE INVENTION The present invention comprises a carrier truck equipped with a holding jig for holding a work at a constant height, and a feed mechanism for reciprocating the carrier truck between predetermined machining steps. A carriage transport unit, a transport rail that can be raised and lowered, a lift mechanism that raises and lowers the transport rail, a transport pallet for transporting a work on the transport rail between predetermined processing steps, and a reciprocating motion of the transport pallet. And a pallet transport unit configured to move the pallet transport unit, and the pallet transport unit includes a pallet transport unit and a pallet transport unit such that a transport rail of the pallet transport unit is located between a transport trolley of the trolley transport unit and a held work. Overlap in a common machining process,
The transfer rail is moved up and down to transfer the work between the transfer carriage and the transfer pallet.

[0006]

In the above-mentioned transfer device, the carriage transfer section and the pallet transfer section independently transfer the work, and the transfer of the work between the trolley transfer section and the pallet transfer section is performed by the pallet transfer section. This is done by raising and lowering the pallet. Therefore, a special work transfer device is not required, and the works can be easily transferred and conveyed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. In addition, in this embodiment, the conveying device is constituted over three steps.

As shown in FIG. 1, the transfer device is installed across the first processing station (A) to the third processing station (C), and is installed from the first processing station (A) to the second processing station (A). It is composed of a carriage transport unit (2) for transporting the work (1) to B) and a pallet transport unit (3) for transporting the work (1) from the second processing station (B) to the third processing station (C). That is, the rear end of the carriage transfer unit (2) and the front end of the pallet transfer unit (3) are overlapped at a common second processing station (B).

As shown in FIGS. 2 and 3, the carriage transfer unit (2) has two carriages on the base (4) from the first processing station (A) to the second processing station (B). The guide rails (5) and (6) are laid, and the transport carriage (10) is slidably mounted on the guide rails (5) and (6) via the LM guides (7) and (8). At 11), the carriage 10 is reciprocated between the first processing station (A) and the second processing station (B).

The feeding mechanism (11) includes a pair of racks (1
2) (13) and one pinion (14), the lower rack (hereinafter referred to as the first rack) (12) is attached to the base (4), and the upper rack (hereinafter referred to as the second rack) (13) ) Is attached to the side surface (10a) of the carrier vehicle (10), and the pinion (14) is meshed with the first rack (12) and the second rack (13).

The pinion (14) is, as shown in FIGS. 4 and 5, a feed cylinder (1) installed on a base (4).
It is rotatably held by a forked holding bracket (17) attached to the tip of the piston rod (16) of 5). Further, guide rollers (21) (2) are provided on both sides of the lower surface of the holding bracket (17) via guide arms (20).
2) is rotatably attached and has a guide roller (21)
(22) is applied to both side surfaces of the first rack (12) to guide the pinion (14) so that it does not rattle during movement.

The feed mechanism (11) moves the pinion (14) by expanding and contracting the feed cylinder (15), and at the time of the movement, the first rack (12) and the pinion (1).
The pinion (14) is rotated due to the meshing relationship with 4), and the second rack (13) is moved by the rotation of the pinion (14) to move the transport carriage (10). In this way, the pinion (14) rotates while moving to move the carrier vehicle (10), so that the pinion (1)
The movement amount of the second rack (13) is 2 with respect to the movement amount of 4).
This doubles the feed stroke of the feed cylinder (15) to half the movement stroke of the carriage (10), and the feed cylinder (15) can be made smaller.

A holding jig (23) for holding the work (1) at a constant height is provided on the upper surface of the transfer carriage (10). As the holding jig (23), a dedicated one is used according to the shape of the work (1) to be conveyed.

As shown in FIGS. 6 and 7, the pallet transfer section (3) has two transfer rails (24) from the second processing station (B) to the third processing station (C).
(25) are arranged in parallel, and each of the transport rails (24) (2
5) A transfer pallet (2) supporting the work (1) on the upper surface of
6) (27) is attached via the LM guides (30) (31). Each of the transfer pallets (26) and (27) is configured to be moved by a moving mechanism provided along each of the transfer rails (24) and (25), for example, chain conveyors (32) and (33).

As shown in FIGS. 8 and 9, the chain conveyor (32) is mounted on a support bracket (34) attached to an intermediate portion of the transfer rail (24), and a feed motor (35) and an idle gear (36) ( 37) and attach the chain (4
0) is wound around the drive gear (41) and the idle gear (36) (37) of the feed motor (35), and the chain (40) is circulated by the forward and reverse rotations of the feed motor (35). There is. Then, the transport pallet (26) is connected to a part of the chain (40), and the chain (4
The pallet (26) is moved by the circulation of 0). The feed motor (35) is mounted on the support bracket (34) so as to be able to move up and down, and the tension of the chain (40) is adjusted by adjusting the mounting position. The other chain conveyor (33) is similarly constructed. And each chain conveyor (3
2) (33) is controlled to circulate synchronously.

Further, the transfer rails (24) and (25) are connected to each other by an elevating frame (42) at an intermediate portion so that the elevating mechanism (eg, elevating cylinder (43) can elevate the elevating frame (42). And a pair of guide rods (44) provided on both sides of the lifting cylinder (43)
(45) and guide posts (46) and (47) guide the elevating frame (42) so as to elevate and lower in parallel. The lifting cylinder (43) is provided on the transfer rail (24).
Installation height and elevation so that the transfer pallets (26) and (27) on (25) move up and down from a position lower than the holding jig (23) on the transfer carriage (10) of the carriage transfer unit (2). The stroke is fixed. Then, as the transfer pallets (26) (27) are raised, the holding jig (2
Receive work (1) from 3). Transport pallet (2
6) and (27) are also provided with various jigs for positioning the work (1) so that the work (1) can be received and positioned at the same time.

The take-out mechanism (50) for taking out the work (1) from the transfer pallets (26) (27) at the third processing station (C) has a pallet transfer section (3) as shown in FIGS. The carrying-out frame (51) formed so as to surround the transport rails (24) (25) of
The unloading frame (51) is supported by the unloading cylinder (53), and the lifting platform (52) is lifted up and down by the unloading cylinder (53). I am doing it.

The carry-out frame (51) of the take-out mechanism (50) stands by at a position slightly lower than the work (1) held by the lowered transfer pallets (26) (27),
When the work (1) is taken out, the carry-out cylinder (53) raises the carry-out frame (51) to move the carrier pallet (2).
6) The work (1) is taken out from (27), and subsequently the undulating cylinder (54) is shortened to carry out the carry-out frame (51).
To stand up and take out the work (1).

The above-mentioned carrier device comprises a carrier truck (10) as a first carrier.
It is moved back to the processing station (A), and the work (1) is set on the holding jig (23) of the carriage (10). After setting, after confirming that the transfer pallets (26) and (27) of the pallet transfer section (3) are lowered, the feed cylinder (15) is extended to move the transfer carriage (10) to the second processing station (B). ) To work (1)
To the second processing station (B).

When the work (1) is carried into the second processing station (B), it is processed by the processing machine (55) while the work (1) is placed on the transport carriage (10).
When the processing is completed, the lifting cylinder (43) of the pallet transfer unit (3) is extended to move the transfer rails (24) (25).
Also, the transfer pallets (26) and (27) are raised, and the transfer pallet (2) is moved from the holding jig (23) of the transfer carriage (10).
6) (27) receives the work (1) and positions and holds it.

When the work (1) is taken out from the carrier carriage (10), the feed cylinder (15) of the carriage carrier section (2).
Performs a shortening operation to return the carrier vehicle (10) to the first processing station (A), and sets the work (1). On the other hand, when the transport pallets (26) and (27) receive the work (1), the feed motor (35) of the pallet transport unit (3) with the transport pallets (26) and (27) being raised.
(35) rotates forward and the chain conveyor (32) (3
3) is circulated and the transfer pallets (26) and (27) are moved to the third position.
Move to processing station (C).

When the transfer pallets (26) (27) are loaded into the third processing station (C), the lifting cylinder (4)
3) is shortened to lower the transport rails (24) (25) and the transport pallets (26) (27), and the work (1) is processed in that state. During this processing, the feed cylinder (15) of the carriage transfer section (2) extends to move the transfer carriage (10) to the second processing station (B), and the next work (1) moves to the second processing station (2). It is carried into B) and processed.

When the processing of the third processing station (C) is completed, the carry-out cylinder (53) of the take-out mechanism (50) extends to raise the carry-out frame (51), and the carry-out frame (51) carries the carrying pallet. (26) Receive the work (1) from (27). When the work (1) is received, the hoisting cylinder (54) is shortened to carry out the carry-out frame (51).
And the work (1) is carried out.

When the work (1) is taken out from the transfer pallets (26) (27), the feed motors (35) (35) of the pallet transfer section (3) rotate in the reverse direction to move the chain conveyors (32) (33). Circulating and transporting pallets (26)
(27) is returned to the second processing station (B). On the other hand, when the work (1) is taken out of the unloading frame (51) that has stood upright, the undulating cylinder (54) extends to lay down the unloading frame (51), and subsequently the unloading cylinder (5).
3) is shortened to lower the carry-out frame (51).

By repeating the above operation, predetermined processing is performed at the first processing station (A), the second processing station (B), and the third processing station (C), respectively.
The work (1) is transferred from the processing station (A) to the second processing station (B) by the transfer carriage (10) of the carriage transfer unit (2), and the second processing station (B) to the third processing station ( Pallet transport section (3) to C)
The transfer is carried out on the transfer pallets (26) and (27).

In the above-mentioned embodiment, a set of the carriage transfer section (2) and the pallet transfer section (3) are combined to constitute the transfer apparatus over three steps. 2)
By alternately combining the pallet transporting section (3) and the pallet transporting section (3), it is possible to configure the transporting apparatus over any process.

[0027]

According to the present invention, the carriage device and the pallet carrier unit are alternately combined, so that the carrier device can be easily constructed over any process, and the number of processes can be increased or decreased. Can be easily accommodated. Further, the work can be delivered between the transfer pallet and the transfer carriage simply by moving up and down the transfer pallet of the pallet transfer unit, and a special work transfer mechanism is not required, and the structure is simplified. Also, since the trolley transport unit and the pallet transport unit operate independently,
Even if there is a difference in the processing time at each processing station, the waiting time can be reduced and the work can be transported, and the cycle time can be greatly shortened.

[Brief description of drawings]

FIG. 1 is a side view of a transfer device according to the present invention.

FIG. 2 is a plan view of a carriage transport unit according to the present invention.

FIG. 3 is a front view of a carriage transport unit according to the present invention.

FIG. 4 is a partial side view of a feeding mechanism according to the present invention.

FIG. 5 is a partial plan view of a feeding mechanism according to the present invention.

FIG. 6 is a plan view of a pallet transport unit according to the present invention.

FIG. 7 is a partially cutaway front view of a pallet transport unit according to the present invention.

FIG. 8 is a partial side view of a moving mechanism according to the present invention.

FIG. 9 is a partial plan view of a moving mechanism according to the present invention.

[Explanation of symbols]

 1 Work 2 Carriage Carrying Part 3 Pallet Carrying Part 10 Carrying Car 11 Feeding Mechanism 24 Carrying Rail 25 Carrying Rail 26 Carrying Palette 27 Carrying Palette 32 Moving Mechanism 33 Moving Mechanism 43 Lifting Mechanism

Claims (1)

[Claims] 1. A trolley transporting unit comprising a transporting trolley provided with a holding jig for holding a work at a constant height, and a feeding mechanism for reciprocating the transporting trolley between predetermined processing steps, and a trolley transporting unit. A pallet transfer unit including a transfer rail, an elevating mechanism for moving the transfer rail up and down, a work transfer pallet that moves on the transfer rail between predetermined processing steps, and a moving mechanism that reciprocates the pallet. Equipped with
The trolley transport unit and the pallet transport unit are overlapped in a common processing step so that the transport rail of the pallet transport unit is located between the transport trolley of the trolley transport unit and the held work. A carrier device for moving a work between the carrier truck and the pallet by moving up and down.