JPS6021165Y2 - Pallet transfer machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pallet conveying type transfer machine.

As shown in FIGS. 1 and 2, a conventional pallet conveyance type transfer machine has a base 1 equipped with a transfer and clamp device 2, and conveys pallets 3 in a horizontal direction in a horizontal position. It is designed to be clamped at a station position, and at each station, the workpiece on the workpiece jig 4 mounted on the pallet 3 is processed in the vertical direction by the assembly machine 5 or horizontally by the assembly machine 6. Processing and assembly are now being carried out.

Such conventional transfer machines allow pallets to be transported in a horizontal position while processing and assembling operations are performed, and are stable against gravity and easy to handle, so they are widely used.

However, it is physically impossible to place a chip conveyor that discharges chips generated during machining right below the workpiece, so the Place the transfer device in front of the machine,
Chips generated at each station are collected together with oil in the diagonal groove 8.
The chips are conveyed to a chip conveyor 7 via a chip conveyor 7, and further discharged to the outside by the conveyor 7.

Therefore, the chips tend to get caught in various places, resulting in poor collection efficiency, and the conveyor 7 occupies an extra floor space.

Furthermore, since the transfer device is located at the center of the machine, maintenance of the transfer part and station is difficult, and the blades of each machine tool are also difficult to maintain.

Furthermore, since the jig mounting surface of the pallet faces upward, it is difficult to clean the jig, and the pallet recovery path 9 protrudes far to the rear, resulting in a large transfer loop and an even larger occupied space. , the control box had to be installed elsewhere.

The purpose of the present invention is to eliminate the above-mentioned conventional drawbacks, and in particular, to provide a pallet-conveying transfer machine that is compact, improves chip recovery, and facilitates maintenance.

The features of this invention are that the transfer device is placed directly on the column itself, that is, directly in front of the column, and that the work is transferred while keeping the pallet in a vertical position so that it faces sideways; The reason is that the wing base is made L-shaped so that the wing base can be attached only to the necessary stations.

According to the present invention having such characteristics, the area of the projected plane of the pallet transport section is small, and the pallet recovery path can also be provided directly on the back of the column, so the transfer loop becomes extremely small, so the overall machine It becomes extremely compact.

Furthermore, since the column is L-shaped, the operator can get closer to the transfer line, making maintenance easier.

Furthermore, since the chip conveyor can be installed directly below the transfer line, the collection of chips is improved, which makes the system particularly suitable for dry processing, and contributes to overall compactness.

In addition, a control box can be attached to the back of the column under the pallet collection path, which has many other effects.

Hereinafter, the present invention will be explained with reference to FIGS. 3 to 14.

In FIGS. 3 to 8, the column 11 is made to have an L-shaped side cross section (actually, it is divided into a plurality of parts, molded, and then joined to form an L-shape), and the periphery of this column 11 is The pallet P is conveyed along the surface.

That is, a transfer rail 13 is fixed to the front surface of the single-character column 11 between each station and at both ends of the column 11, and a clamp cylinder 14 is fixed at each station between these transfer rails 13.
A clamp rail 15 is provided which moves forward and backward by the operation of the cylinder 14, and the clamp rail 15 which is advanced by the operation of the cylinder 14 is continuous with the transfer rail 13.

In this way, the transfer rail 13 and the clamp rail 1
By operating a conveying means to be described later in a state in which the pallets 5 and 5 are continuous, the pallet P is intermittently conveyed by sandwiching these rails 13 and 15 from above and below.

A positioning pin 16 is fixed to the front surface of the cylinder 14,
When the clamp rail 15 is pulled rearward by the operation of the cylinder 14, the pallet P is pressed against the front surface of the cylinder 14, and the pin 16 is fitted, thereby positioning the pallet P.

A pallet P recovery rail 17 is fixed to the back side of the column 11 in parallel with and at the same height as the rail 13.15.

A guide bush 18 is fixed above the clamp cylinder 14 by a column 11, and a transfer bar 19 is supported at the tip of the guide bush 18 so as to be movable in its axial direction and rotatable around its axis. has been done.

In FIGS. 7 to 12, the transfer par 19
One end of the cylindrical body 20 is connected to the cylindrical body 20 from the hole 20a at one end of the cylindrical body 20.
After being inserted into the bar 19, a disc-shaped end plate 21 is fixed to the end surface of the bar 19 with screws, so that the bar 19 is rotatably connected to the cylindrical body 20.

A nut member 22 is also fitted into the cylindrical body 20 so as to sandwich the end plate 21 and is fixed with a set screw, and the end of the rod 24 of the cylinder 23 is fitted into the nut member 22 and fixed thereto.

Therefore, the operation of the cylinder 23 causes the transfer par 19 to move in its axial direction.

Further, one end of the transfer par 19 is a spline portion 19a, and a cylindrical rotating body 25 is attached to the spline portion 19a so as to allow the bar 19 to move in the axial direction, but rotate integrally with the bar 19. It is fitted so that it can move.

The rotating body 25 is rotatably supported by a stationary part via a bearing 26.

An arm 25a protrudes from the rotating body 25, and the arm 25a
is pivotally attached to the rod 28 of the cylinder 27.

Therefore, the rotation body 25 and the transfer par 19 are configured to rotate around the axis by the operation of the cylinder 27.

However, this rotation angle is assumed to be set to approximately 90°.

A pair of pawls 29, 29 are fixed to the transfer par 19 so as to face each other at approximately the same distance as the width of the pallet P, and the pawls 29, 29 protrude forward as shown in FIG. In the rotational position of the bar 19, the claw 29.29
does not engage with the pallet P, but when the bar 19 is rotated in a rotating position such that the claws 29, 29 face downward as shown in FIG. 12, the claws 29, 29 are located close to both sides of the pallet P. It looks like this.

The operation timing of the cylinder 23 and cylinder 27 is as follows.

When trying to convey pallet P, first, cylinder 2
7 to pull in the rod 28 and position the pawls 29 and 29 on both sides of the pallet P as shown in FIG. 19 to the left in FIG.

As a result, the claws 29 hook the pallet P and the pallet P is conveyed along the transfer rail 13 and the clamp rail 15.

Next, the cylinder 27 is operated, and the rod 28 and the bar 1 are
9 is returned to its original position as shown in FIG. 8 to disengage the pawl 29 from the pallet P, the cylinder 23 is operated to return the rod 24 and the bar 19 to its original position.

In this way, by setting the operation timings of the cylinders 23 and 27, the pallet P can be transported intermittently.

Then, when the pallet P comes onto the clamp rail 15, the clamp cylinder 14 is operated to fix the pallet P as described above, and in this state, the workpiece W is processed.
It is now ready to be assembled.

3 to 6, each station includes a processing and assembly unit 32, which processes and assembles a workpiece W attached to a jig 31 on a pallet P from above and below using the front surface of a column 11. 33 is attached to the wing base 33, and a wing base 35 is attached to the wing base attachment part 34 of the column 11 at an appropriate station. A processing and assembling unit 36 is attached.

A connecting rod 37 is provided between the wing base 35 and the column 11.
is interposed (see FIG. 6) to increase the rigidity of the wing base 35.

In FIG. 15, a travel member 39 is supported on the right end surface of the column 11 by a shaft 38 and can be rotated within a range of 180 degrees.

The front end 39a of the travel member 39 is connected to the transfer rail 1.
The transfer rail 13 and the front end portion 39a of the travel member 39 are continuous with each other when the transfer rail 13 and the travel member 39 are turned horizontally toward the front. The pallet P that has been conveyed along the path is conveyed to the front end portion 37a of the traveling member 39.

Then, when the travel member 39 rotates 180 degrees from this state, it rotates while holding the pallet P at the front end 39a.
The pallet P is positioned close to the side end of a collection rail 17 horizontally attached to the back surface of the column 11.

13 and 14, a chain conveyor 41 is provided above the collection rail 17 on the back side of the column 11, and the conveyor 41 is driven by a motor 42 in synchronization with the transfer bar 19. It has become.

Claws 43 are attached to the conveyor 41 at predetermined intervals,
As shown by the chain line in FIG. 15, the claw 43 hooks the pallet P brought close to the side end of the recovery rail 17, so that the pallet P is moved to the front end 39a of the traveling member 39.
from there to the rail 17, and further along the rail 17 to the left end of the column 11.

The reference numeral 44 in FIG. 3 indicates this pallet recovery path, and as can be seen from this figure, the pallet recovery path 44 is directly disposed on the back of the column 11, so the recovery path does not occupy much space. It can be seen that the expansion of the area is kept extremely small.

Also, on the left end surface of the column 11, the traveling member 3 in FIG.
A pallet moving device similar to 9 is provided, and the pallet is moved from the rear of the column 11 to the front so that it can be used again for machining and assembling workpieces.

Note that when the pallet P is moved between the front and rear surfaces of the column 11, the pallet P may be purified by blowing fluid such as air.

As is clear from FIGS. 5 and 6, the workpiece W is transported while protruding from the front surface of the column 11, and is assembled, and the resulting chips fall through the space directly below.

Furthermore, since the horizontal surface 11a of the single-character column 11 is located directly below it, the chip conveyor 46 is disposed in this horizontal portion 11a.

Therefore, since there is no obstruction until the chips reach the conveyor 46, the recovery of the chips is excellent, and the inconvenience of increasing the occupied area due to the installation W of the chip conveyor is eliminated.

Note that each station where the wing base 35 is not installed is provided with a cover 48 that stops the sliding door to prevent danger and to prevent chips and cutting oil from scattering, and the cover 48 can be moved as necessary. This allows various types of maintenance to be performed.

Further, in the illustrated embodiment, there is an extra room on the back side of the column 11 below the recovery rail 17, so the control box 50 is installed in this space to make effective use of the space.

Furthermore, an operation panel 52 for individually operating the processing and assembly units of each station is provided at the front of each station.

According to the present invention, in addition to having many effects as mentioned at the beginning, the point of processing and assembling the workpiece is facing the operator and is located at a higher position, and the column is in the shape of a single character. Since the machining and assembly units can be approached, maintenance is facilitated, and even in dry cutting, the homogeneity of chips is good.

The type of work at each station is not limited to processing and assembly.

Further, the transfer device is not limited to that shown in the drawings.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an example of a conventional pallet conveyance type transfer machine, Fig. 2 is a side view of the same, Fig. 3 is a plan view showing an embodiment of the present invention, and Fig. 4 is a partially cutaway view of the same. Front view, Figure 5 is the left side view of the same as above, Figure 6 is the right side view of the same as above, Figure 7 is the same as above.
The figure is a side sectional view of the transfer and clamp device in the above embodiment, Figure 8 is a perspective view showing the relationship between the transfer bar and the pallet in the above embodiment, and Figure 9 is the same configuration of one end of the transfer bar. FIG. 10 is a partially sectional front view showing the structure of one end of the transfer bar, FIG. 11 is a side view showing the rotating mechanism of the transfer bar, and FIG. 12 is the same. A side view showing the relationship between the transfer bar and the pallet, FIG. 13 is a rear view of the pallet recovery mechanism, FIG. 14 is a side sectional view of the same pallet recovery mechanism, and FIG. 15 is the back and forth movement of the pallet in the above embodiment. FIG. 3 is a perspective view of the mechanism. 11...L-shaped column, 13-curved transfer rail, 14...clamp cylinder, 15
... Clamp rail, 17 ... Collection rail, 19 ... Transfer bar 23.2
7...Cylinder, 29...Claw, 31.
...Jig, 32, 33, 36... Processing,
Assembly unit, 35...Wing base, 46
...Chip conveyor, 39...Ground members, P---------Pallet, W...Work.

Claims (1)

[Scope of utility model registration request] An L-shaped column with multiple stations, a pallet transfer device that runs the pallet vertically along the front of the column and horizontally, a means for collecting and running the pallet at the back of the column, and a pallet transfer device that moves the pallet vertically along the front of the column. means for moving between the front and rear surfaces, and a wing base fixed to the lower protruding front surface of the column at an appropriate station position;
A pallet transport type transfer machine that has work means for processing and assembly installed on the station and wing base, and a chip conveyor placed on the inner bottom of an L-shaped column.