JPH0760563A - Assembling jig lifter device - Google Patents

Abstract

PURPOSE:To provide assembling jig lifter device at a low cost to facilitate the execution. CONSTITUTION:An assembling jig lifter main unit 2, provided with a pallet base 4 lifted by a lifted mechanism 3 actuated by operating a driven shaft 5 rotated, is mounted on a conveyer 11, and on the other hand, a lifter driving gear 6, provided with a drive shaft 10 disconnectably connected relating to the driven shaft 5 of the assembling jig lifter main unit 2 stopped in a specific position, is placed on the ground.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling jig lifter device provided with an assembling jig lifter body mounted on a conveyor and provided with a pallet base whose height position can be adjusted freely.

[0002]

2. Description of the Related Art In an automobile engine assembly line or the like, in the case where the height position of a pallet with an assembling jig mounted on a conveyor can be adjusted, as shown in FIG. A pit 2 is dug below the conveyor 1 at a position where the height should be adjusted, a lifter device 3 is installed in the pit 2, the pallet 4 is stopped at that position, and the pallet 4 is lifted by the lifter device 3. I was trying to let it. In FIG. 6, reference numeral W is a work, and 5 is a motor for driving the conveyor 1.

Alternatively, although not shown, there is a structure in which a lifter mechanism and a motor are attached to each pallet and power is supplied to each motor from a current collecting rail laid on a conveyor line.

[0004]

However, in the former case of the above-mentioned conventional example, the pit 2 needs to be dug in order to install the lifter device 3, which increases the construction cost and changes the line. It was difficult to relocate the device when doing so.

In the latter case, a motor is required for each pallet and a current collecting rail for supplying electric power to the motor needs to be provided on the conveyor, which causes a problem of high cost.

The present invention has been made in view of such circumstances.
It is an object of the present invention to provide an assembly jig lifter device that is easy to construct and inexpensive.

[0007]

The present invention has means for solving the above-mentioned problems as follows. That is, the assembling jig lifter body equipped with a pallet base that moves up and down by the lifter mechanism that operates by the rotation of the driven shaft is placed on the conveyor, while the driven shaft of the assembling jig lifter body stopped at a predetermined position. It is characterized in that a lifter drive device having a drive shaft that is releasably connected to is mounted on the ground.

[0008]

[Operation] When the pallet base is moved up and down, the assembly jig lifter main body is stopped at a predetermined position so as to correspond to the lifter drive device on the ground, and the lifter drive device of the assembly jig lifter main body is driven with respect to the driven shaft. The pallet base can be moved up and down by connecting the drive shaft and rotating the driven shaft in the forward and reverse directions.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an assembling jig lifter device of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing the structure of an assembling jig lifter device 1. Reference numeral 2 is an assembling jig lifter main body placed on a conveyor 11, and an assembling jig lifted up and down by a lifter mechanism 3 is provided above it. A pallet base 4 with tools is provided, and its lifter mechanism 3 has a driven shaft 5 supported by the pallet base 4 with its tip facing outward in a direction substantially orthogonal to the conveying direction of the conveyor 11 shown by arrow C. The lifter mechanism 3 is operated by the rotation operation of the driven shaft 5, and the pallet base 4 is moved up and down.

Reference numeral 6 denotes a lifter driving device which is arranged at a predetermined position on the ground facing the conveyor 11, and is a slide table which is moved forward and backward with respect to the conveyor 11 on a stand 7 whose height level can be adjusted. 8 is provided, and a drive shaft 10 that is rotationally driven by a motor 9 provided on the slide base 8 is
It is adapted to be connected to the driven shaft 5 of the assembling jig lifter main body 2 on the conveyor 11 so as to be freely separable. It should be noted that in FIG. 1, reference numeral E is an engine to be assembled.

With such a configuration, the assembling jig lifter main body 2 is stopped at a predetermined position so as to correspond to the lifter driving device 6, and the lifter driving device 6 is attached to the driven shaft 5 of the assembling jig lifter main body 2. By moving the drive shaft 10 forward to connect the shafts 5 and 10 and rotating the driven shaft 5 forward and backward, the pallet table 4 can be moved up and down, and the height level can be adjusted to an appropriate position.

More specifically, the above-mentioned conveyor
11 is a two-endless endless conveyor chain 11a, 11a
It is a unit type pallet conveyor that is equipped with and is placed on the ground, and it is not necessary to dig a pit, and the units can be easily connected and moved.

As shown in FIGS. 2 and 3, the assembling jig lifter main body 2 mounted on the conveyor 11 has a base plate 16 directly mounted on the conveyor chains 11a, 11a as shown in FIGS. The ball screw 23 includes a link pair formed of two link members 21 and 22 pivotally connected to each other at the center and a ball screw 23 attached to the lower part of one of the link members 21 and 21. A male screw 23a is transmission-coupled via a bevel gear device 24 to a driven shaft 5 supported on a base plate 16 thereof.

One end (upper part) of the above-mentioned one link member 21, 21 is pivotally attached to both ends of the pallet base 4, and the other end (lower part) thereof is a guide rail 25 provided on the base plate 16. ，
It is pivotally attached to sliding bodies 26, 26 slidably mounted on 25, and both ends thereof are connected and fixed by a connecting member 27, and a female screw 23b of a ball screw 23 is fixed to the central portion of the connecting member 27. ing. Each one end (upper part) of the other link member 22, 22 is pivotally attached to a slide body 29, 29 slidably mounted on guide rails 28, 28 provided on both sides of the other end of the pallet base 4. The other ends (lower parts) of the other link members 22, 22 are pivotally attached to brackets 30, 30 fixedly mounted on the base plate 16.

A wheel gear 31 is fixed to one end of the male screw 23a of the ball screw 23, a bevel gear 32 meshing with the wheel gear 31 is fixed to one end of the driven shaft 5, and a hexagonal shape is formed on the other end of the driven shaft 5. The formed fitting shaft 33 is fixed, and the hexagonal hole of the socket 34 attached to the tip of the drive shaft 10 of the lifter drive device 6 is fitted into the fitting shaft 33 and is driven by the drive shaft 10 and the driven shaft 10. The shaft 5 is integrally connected.

On the other hand, as shown in FIGS. 4 and 5, the lifter drive device 6 has a leg whose height level can be adjusted.
A slide base 8 slidably supported via an LM guide 36 on a base 7 having 35, ... Is shown by a solid line in FIG. 4 by an air cylinder 37 attached to the side of the base 7. The socket 34 of the drive shaft 10 can be fitted onto the fitting shaft 33 of the driven shaft 5 of the assembly jig lifter main body 2 at the retracted position and the forward position shown by the chain double-dashed line. You can do it.

The drive shaft 10 to which the above-mentioned socket 34 is attached is slidably supported in the axial direction in a guide cylinder 39 provided integrally with the shaft cover 38 on the slide base 8 and is spring-loaded. It is urged outward by 40 and connected to the extension shaft 41 by spline fitting, and the extension shaft 41 is connected to the output shaft of the motor 9 via the coupling 43.

With this structure, the socket 34 is slowly rotated with respect to the fitting shaft 33 whose axial position is fixed, and the air cylinder 37 is expanded to move forward together with the slide base 8 to move the spring. By absorbing the shock by the cushioning action of 40, the socket 34 can be fitted onto the fitting shaft 33 without difficulty. And
By rotating the motor 9 in the forward or reverse direction, the pallet base 4
The height level of can be adjusted quickly and accurately.
After the height adjustment, the air cylinder 37 is contracted to retract the socket 34 together with the slide base 8 to release the connection to the fitting shaft 33, and the conveyor 11 is operated to set the assembling jig lifter main body 2 to a predetermined size. It can be moved to the work position and the assembly work can be performed efficiently.

On the other hand, the next assembling jig lifter main body 2
However, when it is carried into a position corresponding to the lifter driving device 6, the socket 34 is advanced and connected to the fitting shaft 33, and similarly, the height of the pallet base 4 is adjusted to an appropriate height. In the following, the height of each pallet base 4 can be adjusted easily, quickly and surely.

When the socket 34 is connected to the fitting shaft 33, initially, the socket 34 is slowly rotated and moved forward together with the slide base 8 with respect to the fitting shaft 33 so as to move the socket 34 forward.
The photoelectric sensor 42, 42 (see FIG. 2) provided on the 34 is used to confirm the connection state to the fitting shaft 33, and after confirming the connection state, the rotation speed of the motor 9 is increased to increase the height of the pallet table 4. I am trying to adjust the level automatically,
Although a detailed description is omitted, according to a control program preset in advance by a command from a controller provided separately,
It is possible to automatically perform a series of operations from the connection of the socket 34 to the height adjustment of the pallet base 4 to the disconnection.

Since the assembly jig lifter main body 2 is not provided with a drive source, it can be formed in a simple structure and lightweight. Further, the lifter drive device 6 is a leg whose height is adjustable.
Since it has 35, ... and is mounted on the ground, it does not require a pit, installation and relocation are extremely easy, and construction costs can be kept low. Not only engine E,
Needless to say, the assembling jig lifter device of the present invention can be used for assembling and assembling various other devices and equipment.

[0022]

As described above, according to the assembling jig lifter device of the present invention, the assembling jig lifter main body having the pallet base which is lifted and lowered by the lifter mechanism which is operated by the rotation operation of the driven shaft is provided. , A lifter drive device equipped with a drive shaft connected to the driven shaft of the assembly jig lifter main body stopped at a predetermined position while being placed on the conveyor is placed on the ground, Construction, installation, and relocation can be performed easily without digging, and costs can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an assembly jig lifter device of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of the assembling jig lifter body.

FIG. 4 is a side view of the lifter driving device.

FIG. 5 is a rear view of the same.

FIG. 6 is an overall configuration diagram showing an example of a conventional assembling jig lifter device.

[Explanation of symbols]

2 ... Assembly jig lifter main body, 3 ... Lifter mechanism, 4 ... Pallet base, 5 ... Driven shaft, 6 ... Lifter drive device, 10 ... Drive shaft, 11 ... Conveyor.

Claims (1)

[Claims] 1. An assembling jig lifter body having a pallet base that is moved up and down by a lifter mechanism that is driven by the rotation of a driven shaft to be mounted on a conveyor while being stopped at a predetermined position. An assembling jig lifter device, comprising a lifter driving device having a drive shaft connected to the driven shaft of Fig. 4 so as to be freely connectable and disconnectable.