JPH02303746A - Work transporting pallet - Google Patents

Abstract

PURPOSE:To carry out the turning operation of a fixing screw without shifting the position of a rotary tool by installing a supporting member for supporting a plurality of engaging rotary members in proximity, onto a pallet plate and connecting the rotary members onto the fixing screws for an auxiliary supporting board through a revolution transmission means. CONSTITUTION:The rotary tools such as hexagonal wrench and screw driver are hooked onto a plurality of hooked rotary members (rotary shaft) 4 positioned in proximity, and when the hooked rotary member 4 is revolved, the revolution is transmitted to the fixing screw 29 of an auxiliary supporting base 14 through a revolution transmitting means (flexible shaft) 5, and the fixing screw 29 revolves. Therefore, fixation and release of the supporting pins 26 of a plurality of auxiliary supporting bases 14 are carried out by the revolution of the fixing screw 29. Therefore, the turning operation of the fixing screw 29 can be carried out without shifting the position of the rotary tool.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a workpiece conveying pallet used when a workpiece is fixed on the pallet and the workpiece is conveyed or supplied to a machine tool together with the pallet. In particular, it relates to pallets with a plurality of auxiliary supports.

(Prior Art) As a conventional pallet as described above, there is, for example, one shown in FIG. 4, which was disclosed in an application previously proposed by the present applicant.

This workpiece transfer pallet is used on a pallet feed type transfer machine to transfer the workpiece between each machine tool of the transfer machine and to supply the workpiece to the machine tool. Reference numeral 1 indicates a pallet plate, and 2 indicates an oil seal retainer, which is an engine component, as an example of a workpiece. Here, one workpiece conveying pallet conveys and supplies two oil seal retainers 2. do.

The oil seal retainer 2 shown by the imaginary line in the figure is cast from an aluminum alloy material using a mold, and during casting, the oil seal retainer 2 is attached to the retainer 2 for positioning and fixing to the pallet plate l. Seven tongue-shaped bosses 2a, which also serve as machining reference parts, are formed on the side surfaces by selecting positions that will not interfere with tools during machining, and in the figure, cast-out holes are formed at both left and right ends that pass through the bosses 2a. The three locations of
While a locating hole 2b is formed as a processing reference part, on the upper surface of the valent plate 1, for each oil seal retainer 2, there are two clamping bases 12 without locating pins 11, and - one each. , a clamp stand 13 having a locate pin 11, and six auxiliary support stands 14 are provided.Furthermore, in addition to the stepped portion 1a on the long side, the balent plate l has a stepped portion 1a on the long side as well as a Three through holes t are provided for each retainer 2 to enable machining.
b, a plurality of through holes 1c for weight reduction, and two locating holes 1d located at diagonal corners for positioning with respect to the machine tool. Since the pallet 1 is transported in the direction shown by arrow A, two elastic blocks 15 are provided at the front end of the pallet 1 to serve as cushioning materials in the event of a collision with another pallet.

As shown in FIG. 5, the former clamp stand 12 is configured to support the back surface of the boss portion 2a of the retainer 2 on a block 16 (with a fixed support pin 17 and one end attached to the surface of the boss portion 2a). A clamp lever 18 that grips the boss portion 2a, a pivot pin 19 that swingably supports the other end of the clamp lever 18 on a spherical surface, and a clamp lever 19 that is tightened to the block 1G. The bolt 20 presses the central part of the clamp lever 18 toward the block 16 to enable gripping of the boss portion 2a, and when the bolt 20 is loosened, the clamp lever 18 is lifted to facilitate attachment and detachment of the retainer 2. Break-in spring 21
and a stopper pin 22 (see FIG. 4) that stops the rotation of the clamp lever 18 about the bolt 20 at a point where one end of the lever is located on the support pin 17.

In addition, as shown in FIG. 6, the latter clamp table 13 has the same structure as the former clamp table 12, and also includes a locate pin 11 supported by a block 16 so as to be movable up and down, and a position where the locate pin 11 is moved in the upward direction. A spring 23 is provided which constantly biases the block 16 to project upward from the block 16.

Therefore, here, loosen the bolt 20 and release the clamp lever.
18 is rotated to the side of the support pin 17, and on the support pin 17 in three places, the heights from the back surface are aligned during casting and are formed to serve as processing reference parts in the height direction. The tapered tip of the locate pin 11 is placed under the pressure of the spring 23 into the three locate holes 2b, which are formed to provide positional accuracy during casting and serve as horizontal processing reference parts. , and then rotate the clamp lever 18 until it abuts the stopper pin 22, and insert one end of the lever into the support pin 17, and eventually the boss portion 2.
By positioning the retainer 2 on the pallet plate 1 and tightening the bolts 20, the retainer 2 as a workpiece can be positioned and fixed on the pallet plate 1 very easily. Further, if the operation is reversed to the above, the crank lever 18 is lifted by the action of the spring 21, so that the retainer 2 can be removed from the pallet plate 1 very easily.

In addition, in order to more reliably support the retainer 2, which is a thin workpiece, a support pin 26 is supported on the block 25 so as to be movable up and down, as shown in FIG.
The support pin 26 is constantly urged upward by a spring 27 so as to come into contact with the boss part 2a and the back surface of the thin wall part of the retainer 2, and in this contact state, the handle 28 is rotated and one end is connected thereto. Since the auxiliary support base 14 is provided so that the support pin 26 can be fixed by tightening the fixing screw 29, deterioration of machining accuracy due to deformation of the retainer 20 or chatter vibration due to milling etc. on the surface of the retainer 20 can be effectively prevented. It can be prevented.

(Problem to be Solved by the Invention) However, in the conventional workpiece conveying pallet described above, the handle 28 is directly connected to the fixing screw 29 of the auxiliary support base 14, so the position of the handle 28 is shifted from the pallet board. 1, which is why the support pin 2
There is a problem in that it takes time and effort to rotate the fixing screw 29 when fixing and releasing the fixing screw 6, and this problem is particularly serious when the rotating operation of the fixing screw 29 is automatically performed by a robot or the like.

The present invention provides a pallet that advantageously solves the above problems.

(Means for Solving the Problems) The present invention includes a clamp stand that clamps a workpiece, and a support pin that is urged by an elastic means so as to come into contact with the workpiece held by the clamp stand, and is fixed in the abutting state. A workpiece conveyance pallet comprising a plurality of auxiliary support stands for supporting the workpiece by fixing the support pins with screws on a pallet plate, wherein a plurality of engagement rotating members are arranged close to each other on the pallet plate. The present invention is characterized in that a support member is provided which pivots in the rotational direction, and the engaging rotation member is connected to the fixed screw via a rotation transmission means.

(Function) In such a pallet, when a rotary tool such as a hex wrench or a driver is engaged with the engaging rotating member and the engaging rotating member is rotated, the rotation is transmitted to the fixing screw via the rotation transmission means. The transmission causes the fixing screw to rotate.

Therefore, according to the above pallet, the support pins of the plurality of auxiliary support bases can be fixed and released by rotating the plurality of engaging rotating members located close to each other with a rotating tool such as a hex wrench. The rotation operation of the rotary screw can be performed without substantially moving the position of the rotary tool, or by sequentially positioning the rotary tool at a plurality of fixed positions close to each other.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a plan view showing a schematic half of an embodiment of the workpiece conveying pallet of the present invention. In the figure, parts similar to those shown in FIG. 4 are designated by the same reference numerals. The unillustrated half has substantially the same configuration as the illustrated half.

That is, on the pallet plate 1, there are provided - clamp stands 12, two clamp stands 13, and six auxiliary support stands 14 for - oil seal retainers 2. Two retainers 2 are attached to the plate 1 by the clamp bases 12, 13 and supported by the auxiliary support base 14.

Here, two gate-shaped support members 3 (only one is shown in the figure) are erected on the end of the pallet board 1, and each of these support members 3 has a rotating shaft as an engaging rotating member. 4 are pivotally supported, and each rotating shaft 4 is
Its upwardly facing head has a hexagonal hole 4a into which a normal hexagonal wrench can be fitted.

As shown in FIG. 2, one end of a flexible shaft (trade name) 5, which is a flexible rotation transmission member serving as a rotation transmission means, is attached to the downwardly facing shaft end of each rotating shaft 4. are connected to each other, and the other ends of their flexible shafts 5 are connected to fixing screws 29 of each auxiliary support stand 14.

According to this pallet for transporting workpieces, the two oil seal retainers 2 can be positioned and mounted on the pallet plate 1 as described above, and the retainers 2 can be supported by the auxiliary support stand 14. Since the rotation of the rotating shafts 4 is transmitted to the fixing screw 29 via the flexible shaft 5, the heads of the six rotating shafts 4, which are centrally arranged on the support member 3, are connected to the hexagonal holes 4a of the six rotating shafts 4. By sequentially inserting and rotating a hexagonal wrench, the support pins 26 of the six auxiliary support stands 14 can be fixed and released easily in a short time, and the rotation shaft 4 can be arranged so that each pallet is It is also easy to standardize the
For example, as shown in FIG. 3, a nut runner 8 that rotates a hexagonal wrench is used to rotate the fixing screw 29 of the auxiliary support base of the workpiece conveyance pallet 7 that is conveyed on the conveyor 6 and stopped at a predetermined position. The program-operated robot 9 can also be used to easily and quickly perform the process.

Furthermore, as shown in the above embodiment, there is an advantage that the robot 9 can be easily controlled by arranging all the rotary shafts 4 in the same direction and/or on the same line.

Although the invention has been described above based on the illustrated examples, the present invention is not limited to the above-mentioned examples. For example, the rotation transmission means may be one using a gear set and a shaft, or one using a bendable universal joint and a shaft. It's okay to have one.

(Effects of the Invention) According to the workpiece conveying pallet of the present invention, the rotation operation of the fixing screw of the auxiliary support can be carried out without moving the rotary tools, or by constantly moving the rotary tools closer to each other. Since this can be performed by sequentially positioning the rotor at a plurality of positions, the rotation operation can be easily performed in a short time, and automatic operation using a robot or the like can also be performed easily.

[Brief explanation of drawings]

Fig. 1 is a plan view showing a schematic half of an embodiment of the pallet for transporting workpieces of the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is a pallet of the above embodiment. FIG. 4 is a plan view showing a conventional pallet, FIG. 5 is a sectional view taken along line V-V in FIG. 4, and FIG. 6 is a side view of the conventional pallet. , FIG. 7 is a cross-sectional view taken along the line ■-■ in FIG. 4. l... Pallet plate 2... Oil seal retainer 3... Support member 4... Rotating shaft 5...
...Flexible shaft 7...Pallet for transporting workpieces 8...Nut runner 9...Robot 12, 1
3... Clamp stand 14... Auxiliary support stand 26...
・Support pin 27...Spring 29...
Fixing screws Fig. 3 Fig. 5 Fig. 6 Fig. 7

Claims (1)

[Claims] 1. Clamp stand (12, 13) that clamps the workpiece (2)
and urging the support pin (26) by the elastic means (27) so that it comes into contact with the work clamped by the clamp table, and fixing the support pin with the fixing screw (29) in the abutting state. Multiple auxiliary support stands to support the workpiece (
14) on a pallet plate (1), wherein a plurality of engagement rotating members (4) are provided on the pallet plate (1).
A pallet for transporting workpieces, characterized in that a support member (3) is provided that pivots the two in close proximity to each other, and the engaging rotation member is connected to the fixing screw (29) via a rotation transmission means (5). .