JPH0322059Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for conveying pallets loaded with workpieces, parts, etc.

[Conventional technology]

A device that transports pallets loaded with workpieces, etc.
A lifter 7 that moves up and down while being guided by an upright guide pole 6 is attached to a hanger 3 that is integrated with a conveyor 2 that automatically runs along a guide rail 1 placed at a required height from the floor as shown in FIG. Lift the pallet 5 from the floor and open/close arm 4 of hanger 3.
There is a transport device supported by a and 4b.

[Problem that the invention attempts to solve]

In the conventional device described above, the hanger 3 that supports and hangs the pallet 5 has a pair of opening/closing arms 4a and 4b.
Therefore, a surrounding space is required to allow opening of the opening/closing arms 4a, 4b. In addition, since the pallet 5 held by the opening/closing arms 4a, 4b only supports the lower surface of the pallet 5, the weight distribution of the workpieces etc. on the pallet 5 may be uneven, or the pallet 5 may be held unevenly while the pallet 5 is moving. If the position of the workpiece shifts due to the inertia of the hanger 3, the hanger 3 may swing, and the pallet 5 or the workpieces on the pallet 5 may fall. Therefore, the running speed of the hanger 3 is suppressed to a slow speed and cannot be increased.

Furthermore, the lifter 7 that moves the pallet 5 up and down with respect to the hanger 3 cannot support the lower surface of the pallet 5 by the claws of the opening/closing arms 4a, 4b unless it passes between the claws of the opening/closing arms 4a, 4b. . Therefore, the width of the lifter 7, that is, the width dimension of the surface that supports the pallet 5, is the same as that of the opening/closing arms 4a, 4.
Since the supporting area of the pallet 5 is narrow, there is a problem in that the pallet 5 is moved up and down unstably.

[Means for solving problems]

The present invention solves the above-mentioned conventional problems, and its structure consists of a combination of a pallet and a hanger for suspending and transporting the pallet, and the pallet has engaging recesses at its four corners. A shaft for hanging the pallet is fixed upright, and the hanger has a guide sleeve that penetrates the shaft at a position corresponding to the shaft of the pallet and is fixed in the vertical direction to a frame that runs along a guide rail. In the vicinity of the guide sleeve, there are provided an engaging pawl that engages and disengages the engaging recess of the shaft that passes through the guide sleeve, and an actuator that engages and disengages the engaging pawl.

[Effect]

In the present invention, the shaft of a pallet lifted by a lifter passes through a guide sleeve provided in a frame of a hanger, and an engaging claw is engaged with an engaging recess provided in the shaft by an actuator. , the pallets are fixedly suspended from the frame of the hanger.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 and 4. In FIG. 1, 1 is a guide rail, 2 is a transport machine that automatically travels along the guide rail 1, 3 is a hanger integrated with the transport machine 2,
5 is a pallet suspended by the hanger 3; A guide ball 6 stands perpendicular to the guide rail 1 and guides a lifter 7 for moving the pallet 5 up and down between the floor surface and the hanger 3. W indicates a workpiece placed on pallet 5.

The present invention is characterized by the structure of the pallet 5 and the hanger 3. Its specific configuration will be explained with reference to FIGS. 2 to 4.

The pallet 5 has hanging shafts 9 fixed upright at its four corners. This shaft 9 has an engagement recess 10 in which an engagement claw 13, which will be described later, engages.
is provided.

On the other hand, in the hanger 3, four frames 8 corresponding to the shaft 9 are fixed integrally with the conveyor 2, and a guide sleeve 11 passing through the shaft 9 is fixed to the tip of the frame 8 via a mounting member 18. It is set up. A flare 19 is formed at the lower end of the guide sleeve 11 to facilitate guiding the shaft 9.

Furthermore, the frame 8 includes a guide sleeve 11.
An engagement pawl 13 that engages and disengages from an engagement recess 10 of the shaft 9 passing through the shaft 9 is rotatably supported by a support shaft 12 . Further, an actuator, such as a solenoid cylinder 14, for pivoting the engaging claw 13 in the engaging/disengaging direction is swingably attached to the frame 8 by a pivot 15, and the actuating rod 1
6 and the support shaft 12 are connected by a link 17, and when the operating rod 16 expands and contracts, the support shaft 12 is rotated via the link 17, and the engagement pawl 13 is pivoted in the engagement and disengagement direction. There is.

Next, the operation of the present invention will be explained. The pallet 5 is moved upward from the floor toward the hanger 3 by a lifter 7. When the ascending pallet 5 approaches the hanger 3, the shaft 9 is inserted into the guide sleeve 11, and its left end is connected to the guide sleeve 1.
It penetrates and protrudes from the upper end of 1. The lifting end of the shaft 5 by the lifter 7 is a position in which the engagement recess 10 is in an unloaded state slightly above the position of the engagement claw 13, as shown by the imaginary line in FIG. In this state, the solenoid cylinder 14 is operated to pivot the engagement claw 13 to the engagement position where it abuts the engagement recess 10 of the shaft 9, and the lifter 7 is moved downward. As a result, the pallet 5 also moves downward, but when the engaging recess 10 engages with the engaging claw 13, the pallet 5 is moved down to the hanger 3.
When the pallet 5 is locked, only the lifter 7 moves to the lower end, and the pallet 5 is suspended from the hanger 3.

When lowering the pallet 5 suspended from the hanger 3 onto the floor, the lifter 7 is raised to lift the pallet 5 to an unloaded state, and the solenoid cylinder 14 is used to separate the engagement claw 13 from the engagement recess 10. Rotate it to the unlocked position and move the lifter 7 to the lowering end.

[Effect of idea]

As described above, according to the present invention, the shafts fixed upright at the four corners of the pallet are passed through the guide sleeve provided on the frame of the hanger, and the actuator provided on the frame allows the shafts that have passed through the guide sleeve to be moved by the engaging claws. Since the hanger frame is configured to engage and lock, the hanger frame does not require the opening and closing operations as in the past, allowing pallets to be attached and detached in a small space. Since it is fixed integrally, it becomes a rigid body and can cope with the transportation of heavy objects, and safety is ensured since the pallet does not shift or fall due to inertial rocking during transportation. Therefore, it is possible to increase the conveyance speed and improve the conveyance efficiency.

Furthermore, since the table surface of the lifter that raises and lowers the pallets is not affected by the shape of the hanger, it can take up a large area, which has the advantage of allowing the pallets to be moved up and down in a stable manner.

[Brief explanation of the drawing]

Figure 1 is a side view of the overall configuration of the present invention, Figure 2 is a perspective view of the main components of the present invention, and Figure 3 is Figure 2A.
A cross-sectional view of the part viewed from the arrow B, and Figure 4 is a cross-sectional view of the part A in Figure 2.
The arrow view and FIG. 5 are perspective views of the conventional device. 1...Guide rail, 2...Transporter, 3...Hanger, 5...Pallet, 8...Frame, 9...
... Shaft, 10 ... Engagement recess, 11 ... Guide sleeve, 13 ... Engagement pawl, 14 ... Solenoid cylinder.

Claims (1)

[Scope of utility model registration request] It consists of a combination of a pallet and a hanger for suspending and transporting the pallet, and a hanging shaft with engaging recesses at its four corners is fixed upright to the pallet, and the hanger is attached to a guide rail. A guide sleeve that passes through the shaft of the pallet at a position corresponding to the shaft of the pallet is vertically fixed to the frame that travels along the shaft, and a guide sleeve that is attached to the engaging recess of the shaft that passes through the guide sleeve is installed near the guide sleeve. 1. A pallet conveying device comprising a disengageable engagement claw and an actuator that engages and disengages the engagement claw.