JPS6117790Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a tool extraction device in a tool magazine, and is designed to reduce the load acting on the tool socket support when manually extracting a tool from the tool magazine, and to The purpose is to make it applicable to magazines.

When manually extracting a tool fitted to a socket in a tool magazine, generally a through hole is provided at the rear end of the socket, and the tool is removed by pressing the push rod against the pull stud of the tool by operating a lever, etc. A method of extraction has been adopted.

In this case, it cannot be applied to devices where there is no space for installing a push rod behind the socket, and there is also the problem that a large load is applied to the socket support section due to the pressure from the push rod.

The present invention provides a tool extracting device that eliminates such undesirable concerns of the prior art with a simple structure and operation.

Embodiments of the present invention will be described below with reference to the drawings.
The device of the present invention can be applied to any type of tool magazine, as described above, and one example is shown in FIG. 1 is a column, and 2 is a magazine base fixedly installed on the column 1. A support stand 3 is fixed on the circumference of the magazine base 2, and the support stand 3 is provided with guide rollers 5 oriented in two directions at right angles. An indexing disc 4 serving as an indexing member is rotatably supported on a horizontal plane via a guide roller 5. Holding blocks 6 are fixedly mounted on the index disk 4 at equal intervals.
A socket 7 for holding a tool 8 is pivotally mounted between each of the sockets 7 so as to be tiltable, and is indexed and rotated to a tool exchange position A, and then tilted to perform automatic exchange of the tool 8.

The indexing rotation mechanism of the indexing disk 4 has the following structure. The index disk 4 constitutes a so-called ring gear having a gear formed on its outer peripheral surface. A pinion 14 that meshes with this gear, and this pinion 1
4 and an intermediate gear 13 coaxially fixed on the magazine base 2 and the support base 3.
5 and is rotatably supported. 9 is an indexing motor, and its indexing shaft 10 has a driving gear 12;
A positioning member 11 is provided which is integral with the drive gear 12, and the drive gear 12 meshes with the intermediate gear 13. Further, the positioning member 11 includes a positioning cylinder 17 fixedly installed on the magazine base 2.
The knock pin 18, which moves forward and backward, engages and disengages. Therefore, when the indexing disk 4 is rotated for indexing, the knock pin 18 is released from the positioning member 11, and the indexing motor 9 moves the required tool 8 through the drive gear 12, intermediate gear 13, and pinion 14.
The indexing disk 4 is indexed and rotated so that it is located at the tool exchange position A, and the dowel pin 18 engages with the positioning member 11 again for positioning.

On the other hand, the tilting mechanism for the socket 7 is provided at a tool changing position A indexed by the indexing device. The socket 7 normally stands up with an upwardly inclined axis with a guide roller 16 in sliding contact with the outer peripheral surface of the guide ring 15. And tool exchange position A
In order to automatically change the tool, it is tilted in the horizontal axis direction as shown in phantom lines. Therefore, at the tool exchange position A, the guide roller 16 is attached to the guide ring 15.
A notch 19 is recessed through which the socket 7 passes, allowing the socket 7 to tilt and turn. The position at which this tilting and turning operation of the socket 7 is performed is such that the piston rod 21 is fixed to the support member 22 fixedly installed on the magazine base 2, and the turning cylinder 20 is attached to the support member 22 at a position approximately equal to the tilt axis of the socket 7 in the upright state. The guide bar 23 is supported so as to be movable up and down along parallel inclined axes, and an engagement member 24 is slidably provided on the guide bar 23 integrally with this turning cylinder 20. Also, each socket 7
includes an engagement roller 25 that engages with the engagement member 24 only when the tool is indexed and positioned at the tool exchange position A.
The structure is equipped with Therefore, at the lower end position of the swing cylinder 20, the socket 7 is slanted up as shown by the solid line in the figure, but at the upper end position, the socket 7 is automatically exchanged by the engaging member 24 and the engaging roller 25 as shown by the imaginary line in the figure. It is possible to change the posture in the horizontal direction. As shown in FIG. 2, the tool 8 and the socket 7 have a pull stud 27 protruding from the rear end of the tool 8, and a pair of left and right holding pins 26 that engage with the pull stud 27 inside the socket 7.
is provided, which normally acts to prevent the tool 8 from coming off.
The tool 8 is designed to be pulled out when an external force is applied in the pulling direction.

Since there is no empty space behind the tool socket 7 in the tool magazine of the type described above, the conventional manual extraction mechanism for the tool 8 using the push rod method cannot be applied as described above. be. The present invention is a tool extraction device that can be used not only for this type of tool magazine but also for other types of tool magazines. Moreover, it is installed in a position that is easy for the operator to operate. Its specific structure will be explained with reference to FIG.

28 is a support bracket. As described above, the support bracket 28 is fixed to the magazine base 2 or the like at a tool extraction position away from the tool exchange position A, where it is easy to manually extract the tool. A swinging rod 29 is pivotally supported on this support bracket 28 by a shaft 30 so as to be swingable back and forth in the direction of the socket 7. Reference numeral 31 denotes a pressing spring interposed between the support bracket 28 and the swinging rod 29, and the spring 31 normally positions the swinging rod 29 at a position away from the socket 7, thereby preventing the indexing rotation from being obstructed. It is made sure that this does not happen.

At the upper end of the swinging rod 29, a pair of levers 34 shaped like pliers or scissors are pivotally supported by pins 35 in an overlapping manner. The pair of levers 34 have an engaging end 34a inserted between the front end surface of the socket 7 and the flange of the tool 8 at the distal ends of the pair of levers 34. is enlarged so that it comes into pressure contact with the tip end surface of the socket 7 and the flange portion of the tool 8 at the same time. Reference numeral 36 denotes a spring for pushing and spreading the grips of the pair of levers 34. Normally, this spring 36 pushes and spreads the grips of the pair of levers 34 as shown in FIG. 2, and the engaging end 34a is closed. It has become a state. Reference numerals 32 and 33 indicate stopper bolts that define the front and rear swing ends of the swing rod 29, and 37 indicates a cover.

Next, the operation for extracting the tool 8 using the device of the present invention will be explained.

As mentioned above, the swinging rod 29 is normally held at the swinging end by the repulsive force of the spring 31, as shown in FIG. I'm running away from it so that it doesn't get in the way of my determination.

When pulling out the tool 8 from the socket 7, index the required socket 7 to the tool extraction position corresponding to the swinging rod 29, grasp the pair of levers 34, and move the swinging rod 29.
is swung forward against the spring 31 so that the engaging end 34a is interposed between the flange portion of the tool 8 and the distal end surface of the socket 7. Generally, the flange portion of the tool 8 has a keyway 38 as shown in FIGS. 2 and 3.
are notched at two locations on the circumference, and a positioning key 39 formed in the socket 7 engages with one of the notches to always orient the other keyway 38 in a fixed direction. The key groove 38 facing in a certain direction is in a direction facing the engaging ends 34a of the pair of levers 34, and by inserting the engaging ends 24a using this key groove 38, the tip of the upper lever can be moved into the key groove 38. The upper end of the socket 7 and the tip of the lower lever are engaged with the tip end surface of the socket 7, respectively. Therefore, the third
As shown in the figure, by applying gripping force to the pair of levers 34, the pair of engaging ends are mutually enlarged by the action of a lever with the pin 35 as a fulcrum, and the tool 8 is pulled out from the socket 7 by a predetermined amount. , even if the pull stud 27 rides on the holding pin 26 and the pair of levers 34 are released in this state, the pair of levers 34 will not hold the spring 3.
Although the tool 8 is expanded at 6 and the engaging end 34a is closed, the tool 8 remains in a state where it can be easily pulled out from the socket 7. Therefore, the operator can grasp the tool 8 with one or both hands and pull it out from the socket 7. In this case, since the reaction force of the tool extraction force acts on the socket 7, the tool extraction force no longer acts on the socket 7.

In this way, the device of the present invention uses a pair of plier-like levers to push apart the space between the tool flange and the tip of the socket to extract the tool from the socket. It can be used not only for tool magazines that cannot be applied with the push rod mechanism, but also for all other types of tool magazines.It also solves the problem of the push rod mechanism where the load of the tool extraction force acts on the socket support, and This has the advantage that the tool can be extracted with a simple configuration and operation.

[Brief explanation of the drawing]

FIG. 1 is a sectional side view of a main part showing an example of a tool magazine, and FIG. 2 is a partial sectional view of the device of the present invention, showing a normal state. FIG. 3 is a partial sectional view of the same tool in a state where it is removed. 4... Index member, 7... Socket, 8... Tool, 28... Support bracket, 29... Swinging rod,
30...shaft, 31...spring, 34...pair of levers, 34a...engaging end, 35...pin, 3
6...Spring.

Claims (1)

[Scope of utility model registration request] In a tool magazine that is provided with a plurality of sockets that hold tools at required intervals on the circumference of an indexing member that is appropriately rotated by an indexing drive device, a swinging rod is placed at a desired position away from the tool exchange position. A pair of pliers-shaped levers are pivotally supported on the swinging rod, and the levers can be inserted between the tip of the socket and the flange of the tool,
and an engagement end that expands when a lever is operated and presses against the distal end surface of the socket and the flange of the tool at the same time, and the swinging rod does not normally interfere with the indexing of the tool magazine by the pair of levers. A tool extraction device in a tool magazine, characterized in that the tool extraction device is held at a swinging end so as to be retracted to a position.