JPH0647645A - Pallet carrying device and connecting pallet used for the device - Google Patents

Abstract

PURPOSE:To enable a work to be mounted/demounted during machining with a pallet separated from a moving means. CONSTITUTION:Each pallet 17 provided with a pin coupling groove at its side surface, is placed over a plural number of rollers 11, a screw threaded bar 25 is set in the direction perpendicularly intersected with the axial direction of each free roller 11, a carriage 22 threadedly engaged with the threaded bar 25 is set in such a way as to be capable of being moved horizontally, and a pallet carriage device is so constituted that a locate coming and going means 23 allowing a locate pin 24 which is to be coupled in the pin coupling groove, to go in and out is fixed on the carriage 22. In the pallet carrying device, each pallet 17 is placed at both the ends of the free rollers 11 in which the carriage 22 is selectively connected to both the pallets 17. Furthermore, each connecting pallet is so constituted as to be used for the pallet carrying device in which a plural number of pallets 17 to be placed over the free rollers 17, are connected to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet conveyor and a connecting pallet used for the same.

[0002]

2. Description of the Related Art In a seam plate drilling machine (drilling for construction splices, etc.), there are various drilling patterns for a workpiece, and a pallet to which the workpiece is attached is indexed (moved at a certain pitch). ), Need to be processed. Therefore, conventionally, a sprocket wheel is pivotally attached to each shaft of a roller on which a pallet is placed, a chain is suspended on each sprocket wheel, and an operator operates a handle to move the pallet horizontally in the horizontal direction. For indexing the pallet (stop position), operate the positioning stopper to bring the dock provided on the pallet into contact with the positioning stopper to stop it, and when moving it further, reverse the positioning stopper and move it to the dock. It was supposed to release the engagement.

[0003]

In the above-mentioned conventional apparatus, it is necessary to operate the positioning stoppers by the number of indexes depending on the drilling pattern of the work piece, and when the work piece is attached or detached. It is necessary to operate the handle to move the pallet to the left and right ends, which are off the spindle head position.

Therefore, in the present invention, the pallet is formed so as to be separated from the moving means so that the workpiece can be attached and detached during the processing. Further, when the pallets are connected and moved, the pallets can be moved regardless of the length.

[0005]

In order to solve the above problems, the present invention mounts a pallet having pin fitting grooves on its side surface on a large number of free rollers, and a direction orthogonal to the axial direction of the free rollers. A pallet conveying device is provided in which a screw rod is installed on the carriage, a carriage screwed to the screw rod is installed so as to be horizontally movable, and a locate-in / out device for inserting / removing a locate pin to be inserted into the pin insertion groove is fixed to the carriage.

Further, a pallet conveying device is constructed in which pallets are respectively placed on both ends of the free rollers and a carriage is selectively coupled to both pallets.

Further, a connected pallet is formed by connecting a plurality of pallets mounted on the free rollers.

[0008]

The present invention is configured as described above. The pallet is placed on the free roller, and the locate pin is projected from the locate / insert device provided on the carriage that moves horizontally into the pin fitting groove provided on the side surface of the pallet. Then, the pallet and the carriage are engaged with each other, and the pallet is freely moved by rotating the free roller by the movement of the carriage.

Further, two pallets are placed on both ends, a carriage is moved to a desired pallet, and the pallets are coupled to each other by a locating pin, and a pallet is selected at the time of selection to perform processing.
Furthermore, a plurality of pallets are connected to each other and a long object is placed thereon for processing.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 1, the bases 1 and 2 on both sides, which are in the shape of a boat when viewed from the front, are connected by a connecting plate 3, and both ends are supported by legs 4 and 5, respectively. Bases on both sides 1,
The support plates 6 and 7 are fixed to the center side (inner side) of each of 2, and the reference plate 8 is fixed to the center of one support plate 6, and a plurality of reference plates 8 are provided on both sides of the support plate 6 (in the embodiment, five Bearings 9, 9,
Fix ... One bearing plate 10 is provided on the other support plate 7.
Is fixed. Then, the central reference plate 8 and the bearing plate 10
A plurality of (four in the embodiment) free rollers 11, 11, ... Are rotatably supported in parallel between and. The T-shaped clamp pieces 12, 12, 12 projecting from the front and rear sides and the center of the free rollers 11, 11, ... Are provided so that they can be moved in and out by a clamp cylinder 13 fixed to the reference plate 8.

Further, grooved free rollers 15, 1 having guide grooves 14 before and after the free rollers 11, 11 ,.
In the embodiment, five bearings are provided for each of the bearings 5, 9 ,.
And a bearing plate 10 are rotatably supported.

The free roller 11, which is constructed as described above,
The pallet 17 on which the workpiece 16 is placed is placed on the grooved free rollers 15, 15. The pallet 17 has protruding members 18 ₁ , 18 ₂ , 18 ₃ on three lower surfaces.
(Refer to FIG. 3) One protrusion member 18 ₁ is fitted into the guide groove 14 of the grooved free rollers 15, 15 ..., and the other protrusion members 18 ₂ and 18 ₃ are positioned on the rollers to move smoothly. You can do it. And pallet 17
At both ends on the base 2 side, groove forming members 20 and 20 'are provided at intervals so as to form pin fitting grooves 19 (see FIG. 1).

A U-shaped linear rail 21 is fixed to the central portion of the base 2 to guide the carriage 22. The lower surface of the carriage 22 is fitted into the linear rail 21 so that the carriage 22 can move without rotating. A locating pin 24 that is moved in and out by a locating device 23 formed by a cylinder or the like is provided on the upper surface, and the locating pin 24 is fitted into the pin fitting groove 19 of the pallet 17 so that the pallet 17 can be moved.

A bearing 26 for axially supporting the tip of a screw rod 25 screwed to the carriage 22 is fixed to one end of the base 2.
The other end is rotatably supported by a bearing 27, and the motor 22 fixed to the bearing 29 horizontally moves the carriage 22. 29 in FIGS. 1 and 2 are free rollers 11 and 1.
1, ... Spindles for machining installed above.

The first embodiment of the present invention is configured as described above, and the pallet 17 on which the workpiece 16 is mounted and fixed is the grooved free rollers 15, 1 on the right end side in FIGS.
5, ... is placed on top. At this time, the protruding member 18 ₁ protruding from the lower surface of the pallet 17 is fitted into the guide groove 14.

Then, the locate-in / out device 23 on the carriage 22 is driven to the exit side so that the locate pin 24 is projected and fitted into the pin-fitting groove 19 provided on the left side of the pallet 17 (in FIGS. 1 and 2). After that, the motor 28
Is driven to rotate the screw rod 25, the carriage 22
Moves horizontally by the guide of the linear rail 21, and the pallet 1
7 together to move the workpiece 1 below the spindle 29.
Move 6

After that, each clamp cylinder 13, 13,
The pallet 17 is clamped and fixed by driving the projecting member 18 ₁ provided on the pallet 17 against the reference plate 8 by the clamp pieces 12, 12, 12 by driving 13. Next, the spindle 29 is lowered to perform desired processing on the workpiece 16.

After processing, each clamp cylinder 13, 1
3, 3 and 13 are driven to the projecting side to project the clamp piece 12 to release the projecting member 18 ₁ , then the motor 28 is rotated in the reverse direction to move the carriage 22 to return the pallet 17 to the original position, The work piece 16 is removed, a new work piece 16 is placed and fixed, and the above work is repeated. Alternatively, the work piece 16 may be removed from the pallet 17 by moving it to the opposite end after processing.

When two pallets 17 are used, the carriage 22 is moved to the position of the pallet 17 to be used, the locating pin 24 is projected, and the locating pin 24 is fitted into the pin fitting groove 19 to be used. And the carriage 22 are engaged with each other. As is apparent from FIG. 1, when the pallet 17 located on the left side is moved, the locate pin 24 is fitted into the pin fitting groove 29 on the spindle 29 side. Then, the pallet 17 is moved to a position below the spindle 29, and after processing, the motor 28 is rotated in the opposite direction to move the pallet 17 to the original position. In this way, the pallets 17 on both sides are selected and processed.

A case of processing a long object using the apparatus of the first embodiment will be described as a second embodiment with reference to FIGS. A plurality of pallets 17 are connected and used, and when connecting, a plurality of tightening plates 30,
.. are tightened with contact bolts 31, 31 ,. The connecting means is not limited to the embodiment. Not only two shown in FIG. 5, but three or four shown in FIG.
One or more pieces may be connected, and may be connected according to the length of the workpiece 16. At this time, if the number of pallets 17 increases, the grooved free rollers 15, 15,
You just have to increase the number of.

In the present embodiment, the carriage 22, the screw rod 25, the motor 28, etc. are the same as those in the first embodiment. First, the spindle 29 side of the pallet 17 located closest to the spindle 29 side is located. The locate pin 24 provided on the carriage 22 is fitted into the pin fitting groove 19 to connect the carriage 22 and the pallet 17. After that, the carriage 22 is moved to position the leading pallet 17 below the spindle 29, the brochure 17 is fixed, and the workpiece 16 on the pallet 17 is processed by a drill or the like. After that, the carriage 22 is further advanced to position the next pallet 17 below the spindle 29, and processing is performed. Further, when the workpiece 16 is long, the locate pin 2 is pulled out from the pin fitting groove 19, the carriage 22 is returned to the original position side, and the locate pin 24 is fitted into the pin fitting groove 19 of the pallet 17 located there. Carriage 2
2 is advanced to position the desired pallet 17 below the spindle 29 for processing. After processing, the workpiece 16 is removed and the pallet 17 is returned to its original position.

In this embodiment, even if the number of pallets 17 increases, it is the main body for carrying, and the carriage and the screw rod can be used as they are.

[0023]

According to the present invention, the roller for mounting the pallet can be freely rotated, and the pallet is moved by the movement of the separate carriage. Therefore, the pallet can be moved depending on the stop position of the carriage. It can be stopped at any place. Further, by mounting two separate pallets on the roller, it is possible to combine any pallet with the carriage and selectively machine the required workpiece. Further, since the pallet and the carriage are of a completely separate type, the work piece on the other pallet can be attached / detached during processing.

Further, by connecting the pallets, it is possible to perform the processing reliably without the need to change the moving range of the main carriage or the like by simply connecting the rollers when processing a long product. is there.

[0025]

[Brief description of drawings]

FIG. 1 is a plan view of a first embodiment of a pallet conveying device according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a side view of FIG.

FIG. 4 is a plan view for explaining a connection pallet that is a second embodiment.

FIG. 5 is a perspective view showing an example of pallet connection.

[Explanation of symbols]

1 Base 2 Base 3 Connection Plate 4 Legs 5 Legs 6 Support Plate 7 Support Plate 8 Reference Plate 9 Bearing 10 Bearing Plate 11 Free Roller 12 Clamp Piece 13 Clamp Cylinder 14 Guide Groove 15 Grooved Free Roller 16 Workpiece 17 Pallet 18 ₁ protruding member 18 ₂ protruding member 18 ₃ protruding member 19 pin fitting groove 20 groove forming member 20 'groove forming member 21 linear rail 22 carriage 23 locate device 24 locate pin 25 screw rod 26 bearing 27 bearing portion 28 mark 29 spindle 30 tightening Plate with 31 bolts

Claims (3)

[Claims] 1. A carriage which mounts a pallet having a pin fitting groove on its side surface on a large number of free rollers, installs a screw rod in a direction orthogonal to the axial direction of the free rollers, and is screwed onto the screw rods. The pallet transfer device is characterized in that it is installed so that it can be moved horizontally, and a locate and take-in device for taking in and out the locate pin to be fitted into the pin fitting groove is fixed on the carriage. 2. The pallet conveyor according to claim 1, wherein pallets are placed on both ends of the free roller, and a carriage is selectively coupled to both pallets. 3. A connected pallet for use in a pallet conveyor according to claim 1, wherein a plurality of pallets mounted on the free rollers are connected.