JPH072126Y2 - Material transfer device for multi-stage press forming machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material transfer device for a multi-stage forging machine, which sequentially presses a material at a plurality of forging stations composed of dies and punches facing each other. The present invention relates to a material transfer device having a plurality of material transfer chucks for sequentially transferring a material to each forging station.

[0002]

2. Description of the Related Art A multi-stage press forming machine for forming bolts, nuts, and various other parts is made up of a plurality of materials, which are supplied from one side of a machine base, and are composed of a die and a punch facing each other. In the forging station, the forging process is performed from coarse to fine in stages, and the forging machine receives the above-mentioned material or the intermediate formed product produced at each forging station and sequentially receives the forging station on the downstream side. A material transfer device for transferring the material is provided.

As shown in FIG. 15, the above-mentioned material transfer device is usually provided with a frame member 2 arranged on the upper surface of a main body 1 of a forging machine, and a pair of swing arms 3 on the frame member 2.
A movable frame 5 supported by a plurality of forging dies 4 (only one is shown) so as to be able to reciprocate in parallel with each other through (only one shown), A material (not shown) supplied from one side or an intermediate molded product 6 discharged in front of each die 4 is sandwiched and sequentially transferred to the front surface of the die 4 on the downstream side as the movable frame 5 reciprocates. A plurality of material transfer chucks 7 (only one is shown) and an opening / closing mechanism 8 including a cam member 8a for opening and closing each of these chucks 7, and the movable frame 5 is appropriately driven by a crank mechanism or the like. The material transfer chucks 7 mounted on the front surface of the movable frame 5 are reciprocally driven between the axial front surface positions of the adjacent dies 4 by being driven by means. Then, the material or the intermediate molded product 6 transferred to the front surface of the axial center of the die 4 by each of the material transfer chucks 7 is punched into the die 4 by a punch (not shown), and the steps are coarsely to finely sequentially. It is designed for forging.

An arm member 2a is fixed to the frame member 2, and one end of the arm member 2a is fixed to a support shaft 9 rotatably supported by the main body 1.
By rotating the support shaft 9, each material transfer chuck 7 together with the frame member 2 can be swung upward as shown by the chain line to move to the retracted position.

[0005]

By the way, in the above-described multi-stage press forming machine, it is preferable that the axes of the material transfer chucks and the axes of the punch and the die are completely aligned. Is a prerequisite for obtaining a pressed product,
If there is a slight misalignment between these axes, defective products will be formed. Further, in an extreme case, the punch and the material transfer chuck, or the material transferred by the material transfer chuck and driven by the punch and the die interfere with each other, resulting in an extremely inconvenient situation. Become. Therefore, maintenance and inspection work such as inspection and adjustment of the shaft center of each material transfer chuck with respect to the shaft center of the punch and die is regularly performed. As shown, each material transfer chuck 7 together with the frame member 2 is moved to the upper retracted position, and the centering adjustment of each chuck 7 is performed using a centering gauge or the like. In this case, simply moving the frame member 2 or the material transfer chucks 7 supported by the frame member 2 to the upper retreat position causes the frame member 2 and the material transfer chucks 7 to remain in the main body of the forging machine. 1. Therefore, it is necessary for an operator to lean on the main body 1 from the side part of the forging machine to perform centering adjustment of each material transfer chuck 7 and the like.
An unreasonable posture was forced during the adjustment work, and workability was extremely poor.

Further, it is necessary to perform the centering adjustment of each material transfer chuck 7 using the centering gauge in the above-mentioned unreasonable posture, and therefore, there is a problem that the accuracy thereof is lowered.

Further, in order to further improve the workability at the time of maintenance and inspection of each material transfer chuck, there is a demand for automatic movement of the chuck between the normal use position and the maintenance and inspection position. How to realize this requirement has been a challenge.

Therefore, an object of the present invention is to improve workability and maintenance accuracy of maintenance and inspection work such as centering adjustment of each material transfer chuck in a material transfer device equipped in a multi-stage press forming machine. .

[0009]

In order to solve the above problems, the present invention is characterized in that it is configured as follows.

First, a device according to claim 1 of the present application (hereinafter,
The first invention) is a plurality of material transfer chucks that reciprocate in the direction in which a plurality of forging stations are arranged and that sequentially transfer materials to each forging station, and chucks for these materials. In a material transfer device of a multi-stage press forming machine having a frame member that reciprocally supports the frame member, the frame member is supported between a normal use position and an upper retracted position on a support table provided behind or above the frame member. A first drive unit that is swingably supported in the vertical direction and that is provided on the support base to swing the frame member to the retracted position; and the support base is rotated to provide a chuck for transferring each material together with the frame member. Second driving means for moving to a maintenance / inspection position near a side portion of the forging machine body is provided.

A device according to claim 2 of the present application (hereinafter,
In addition to the structure of the first invention, the second invention is moved together with the frame member to the maintenance and inspection position by the second driving means while the frame member is swung to the retracted position by the first driving means. It is characterized in that centering adjustment means for the chucks is provided at positions corresponding to the axis of each material transfer chuck.

Further, a device according to claim 3 of the present application (hereinafter,
In addition to the structure of the first invention, a fixing means for fixing the frame member to the normal use position, a position detecting means for detecting the position of the frame member in the normal use position, and the frame member. Control means for controlling the operation of the first and second drive means so as to move the control means between the normal use position and the maintenance and inspection position, and for controlling the operation of the fixing means based on the signal from the position detecting means. Is provided.

Further, the invention according to claim 4 of the present application (hereinafter referred to as the fourth invention) is, similarly to the third invention, a fixing means for fixing the frame member to the normal use position and the normal use position. Position detecting means for detecting the position of the frame member, at least a cover for covering the whole of the forging station and the material transfer device arranged in the vicinity of the station, an opening / closing body provided at an opening of the cover, and an opening / closing body of the opening / closing body. Opening / closing detecting means for detecting opening / closing and, based on a signal from the opening / closing detecting means, control operations of the first and second driving means so as to move the frame member between a normal use position and a maintenance / inspection position. At the same time, a control means for controlling the operation of the fixing means based on the signal from the position detecting means is provided.

[0014]

According to the first aspect of the invention, the frame member swingably supported by the support is swingable to the retracted position above the normal use position by the first drive means provided on the support. become. Then, in this state, by rotating the support base by the second drive means, the respective material transfer chucks together with the frame member are rotated along with the rotation of the support base so that the material inspection chucks are in the maintenance / inspection position near the side portion of the forging machine body. Will be moved to. As a result, when performing maintenance / inspection work such as centering adjustment of the material transfer chucks as described above, at the maintenance / inspection position near the side of the molding machine body without forcing the operator to take an unnatural posture, as in the conventional case. Various maintenance and inspection work such as centering adjustment of each material transfer chuck can be performed easily and smoothly, and the workability and the work accuracy are improved.

In particular, according to the second aspect of the invention, since the centering adjustment means for each material transfer chuck is provided at the maintenance and inspection position, the centering adjustment for each chuck can be performed more quickly and accurately. As a result, the working accuracy will be further improved.

According to the third aspect of the invention, the operation of the first and second drive means is controlled so that the frame member is moved between the normal use position and the maintenance inspection position, and the signal from the position detection means is provided. Since the control means for controlling the operation of the fixing means is provided on the basis of the
The operation of the second drive means is controlled so that each material transfer chuck is automatically moved to a maintenance / inspection position near a side portion of the forging machine main body together with the frame member swung to an upper retracted position. Become. Also, after maintenance and inspection work,
Since each material transfer chuck is automatically moved to the normal use position again together with the frame member, the frame member is fixed at the normal use position by the fixing means based on the signal from the position detecting means. When the material transfer device along with the frame member is moved between the normal use position and the maintenance and inspection position along with the maintenance and inspection work, the movement is automated and the workability is further improved. Become.

Further, according to the fourth aspect, the frame member is moved between the normal use position and the maintenance / inspection position on the basis of the signal from the opening / closing detecting means for detecting the opening / closing of the opening / closing body provided in the opening of the cover. Since the control means for controlling the operation of the first and second drive means so as to move and the operation of the fixing means on the basis of the signal from the position detecting means are provided, the opening / closing body is opened and closed. The operation of the first and second driving means is controlled by the control means so that the material transfer chucks together with the frame member are in the normal use position on the forging machine body and the maintenance and inspection position near the side of the machine body. And the frame member moved to the normal use position after the maintenance inspection by the fixing means based on the signal from the position detecting means. It will be fixed, whereby the workability during maintenance and inspection work is further improved further.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 to 7 show a first embodiment of a material transfer device according to the present invention. As shown in FIGS.
A die block 12 (see FIG. 2) is fixed to a predetermined position of the main body 11 of the multi-stage press forming machine 10, and a plurality of dies 13 ... 13 (five in the illustrated example) are attached to the die block 12.
Are arranged side by side at regular intervals. Further, the die 1 is attached to the front surface of the ram 14 which is moved back and forth toward the die 13 by an appropriate driving means such as a crank mechanism (not shown).
The same number of punches 15 ... 15 as 3 are attached,
These punches 15 and dies 13 form a plurality of stages of forging stations (a) to (e). And
The punches 15 are moved back and forth toward the dies 13 by the ram 14, and the raw materials (not shown) supplied from one side of the machine base at the forging stations (a) to (e) are sequentially coarsely and precisely. Products such as bolts and nuts or parts of various shapes are continuously molded by performing the step-wise forging process.

As shown in FIG. 2, on one side of the die block 12, a material supply quill 16 for supplying a wire rod a from the rear of the main body 11 of the forging machine 10 toward the front of the die block 12. The wire rod a pushed forward by a predetermined amount from the raw material supply quill 16 is reciprocally driven in a predetermined stroke in the direction in which the dies 13 are arranged side by side in association with the forward and backward movement of the ram 14. By being cut by the cutter means 17, a material having a predetermined size is formed. In addition, the above material supply quill 1
6, a pusher 18 is disposed adjacent to the material 6, and the pusher 18 pushes forward the material cut into a predetermined size by the cutter means 17.

Above the die block 12, there is provided a material transfer device 20 for sequentially transferring the material to the forging stations (a) to (e). This material transfer device 20 is shown in FIGS. As shown in FIG. 3, a frame member 21 disposed on the main body 11 and a pair of left and right swing arms 22 and 22 having one end pivotally attached to both side portions of the frame member 21 so as to be swingable, A chuck frame 23 is rotatably supported at the other ends of the pair of swing arms 22 and 22 so that the chuck frame 23 can reciprocate in the direction in which the dies 13 are arranged side by side.
3 and the frame member 21, both side portions are rotatably connected to the pair of swing arms 22 and 22, respectively, and the chuck frame 23.
A plurality of material transfer chucks 25 ... 25 provided on the front surface of the die at the same intervals as the above-mentioned die 13 arranged in parallel and in the same number as each die 13, and these material transfer chucks 25 are provided. As shown in FIG. 2, a chuck body 25a attached to the front surface of the chuck frame 23 and chuck arms 25c, 25c rotatably supported by the chuck body 25a via a pair of support shafts 25b, 25b.
And chuck claws 25b and 25b attached to the lower ends of the chuck arms 25c, respectively.

Further, one end of a drive rod 26 which is reciprocally driven with a predetermined stroke in synchronization with the forward / backward movement of the ram 14 is detachably connected to one side of the chuck frame 23. By reciprocating the chuck frame 23 in the juxtaposed direction of the dies 13 by the rod 26, the material transfer chucks 25 mounted on the front surface of the chuck frame 23 are reciprocated between the axial front surface positions of the adjacent dies 13. It is designed to drive.

Further, on the upper surface of the main body 11 behind the frame member 21, an opening / closing cam 27 for each chuck 25 for opening / closing each material transfer chuck 25 is opened.
A cam drive shaft 28, to which 27 are fixedly mounted, is rotatably provided, and a plurality of cam arms 29 ... 29 that are swung with the rotation of each of these cams 27 are provided on the upper surface of the frame member 21 in a predetermined manner. A plurality of rocker arms 30 ... 30 which are supported at intervals and which abut the tip of each of these cam arms 29 are arranged on the upper surface of the intermediate frame 24 so as to be swingable at predetermined intervals, and each of these rocker arms 30. The rod members 31 ... 31 projecting upward from the upper end portions of the material transfer devices 25 are respectively locked to the tip ends of the rod members 31. Although not shown, the support shafts 25b, 25b supporting the pair of chuck arms 25c, 25c are provided on both side surfaces of the lower end of each rod member 31, respectively.
A gear portion that meshes with a sector gear that is integrally provided with the cam arm 2 is formed by the rotation of each cam 27.
The rod members 31 are driven in the vertical direction by the rocking of the rocker arm 30 and the rocker arm 30. As a result, the chuck arms 25c, 25c are rotated about the support shafts 25b, 25b and the chuck claws 25d, 25d. Is designed to be opened and closed. As a result, as shown in FIG. 2, the material cut to a predetermined size by the cutter means 17 and pushed forward by the pusher 18 or the intermediate molded product (not shown) discharged forward from each die 13 is Each pair of chuck claws 2 in the material transfer chuck 25
The die 1 is sandwiched by 5d and 25d, and in this state, the chuck frame 23 is adjacent to the chuck frame 23 by the drive rod 26.
3 is moved forward to the front surface of the die 3 to transfer the material and the intermediate molded product to the front surface position of the axial center of the die 13, and with the punching of the material and the intermediate molded product into the die 13. The chuck claws 25d, 25d are opened, and thereafter, the chuck claws 25d, 25d are returned to the front position of the die 13 on the preceding stage side.

Further, as shown in an enlarged view in FIGS. 1 and 4, hydraulic lock means 3 for fixing the frame member 21 on the main body 11 is provided on both sides of the frame member 21.
2 is provided, and the hydraulic lock means 32 includes inclined projecting pieces 32a, 32a integrally provided on both side portions of the frame member 21, and these projecting pieces 32, respectively.
The frame member 2 is detachable from each of a and 32a.
1 and the piston rod as the lock pieces 32b and 32b for fixing the whole 1 and the lock pieces 32b and 32b to the respective projection pieces 3
Hydraulic cylinders 32c, 32c for engaging and disengaging with 2a, 32a
It consists of and.

Further, as shown in FIG. 4, between the lower surface of the frame member 21 and the upper surface of the die block 12, is the frame member 21 securely placed at the normal use position on the main body 11? A position detection sensor 33 for detecting whether or not there is provided is provided. The sensor 33 has a tapered recess 33a formed on the lower surface of the frame member 21.
And a tapered projection 33b which is fixedly mounted on the die block 13 and is fitted in the recess 33a, and the projection 33b is provided with a supply hole 33c for supplying compressed air. Therefore, when the frame member 21 is surely placed on the main body 11, the recess 33a is formed.
When the frame member 21 is not securely mounted on the main body 11, the concave portion 33a and the protrusion 33b are fitted to each other to increase the compression in the concave portion 33a.
Compressed air will leak between the projection and the protrusion 33b.
Whether or not the frame member 21 is securely mounted on the main body 11 is detected based on the change in pressure inside the recess 33a.

In this embodiment, as shown in FIGS. 1 to 3, the support base 3 is provided behind the cam shaft 28.
4 are arranged. The base portion 34a of the support 34 is
A vertically extending base shaft 36 rotatably supported by a bearing member 35 fixed to the rear end of the body 11 of the forging machine 10.
Is fixed to the upper end of the key via the key 36a,
A pair of support brackets 37, 3 are provided on the upper surface of the support base 34.
7 is fixedly mounted, and a support shaft 38 is rotatably supported by the support brackets 37, 37.

On the other hand, the frame member 21 is fixedly provided with a pair of arm members 21a, 21a extending beyond the cam shaft 28 to the rear of the main body 11, and the rear ends of the arm members 21a, 21a are fixed. It is fixed to both ends of the support shaft 38 by keys 38a, 38a.

Further, at one end of the support shaft 38, the support shaft 3 is provided.
The worm wheel 39a is fixed so as to rotate integrally with the first drive motor 40, and the first drive motor 40, which is a pulse motor or the like for rotating the worm gear 39b meshing with the worm wheel 39a, has the support bracket 37a.
Is attached to. Accordingly, by rotating the support shaft 38 in the predetermined direction by the first drive motor 40, the pair of arm members 21b, 21b about the support shaft 38,
21b is rotated rearward and upward, so that the material transfer chucks 25 supported by the frame member 21 and the chuck frame 23 are moved to the retracted position above the normal use position, as shown by the chain line in FIG. It is designed to be rocked to.

A gear 41a is provided at the lower end of the base shaft 36.
Is integrally attached to the rear surface of the main body 11 of the forging machine 10 via a support bracket 43. The second drive motor 42 is a pulse motor or the like for rotating the drive gear 41b that meshes with the gear 41a. It is attached, and by rotating the base shaft 36 by the second drive motor 42, the support base 34 is rotated about the base shaft 36 in a horizontal plane.

On the other hand, as shown in FIGS. 1 and 2, the vicinity of the side of the main body 11 of the forging machine 10 is a maintenance inspection position (f), and the material transfer device is located at this maintenance inspection position (f). A bracket 45 fixed to the side surface of the main body 11 includes a centering adjusting jig 44 as a centering adjusting means for adjusting the shaft centers of the pair of chuck claws 25d and 25d of the material transfer chucks 25 in FIG. The jig 44 is movably mounted on a frame 46 arranged above, and the jig 44 is provided with a centering gauge 47 (at a pitch corresponding to the regular axial distance between the pair of chuck claws 25d, 25d). Insertion holes 44a ... 44a for inserting (see FIG. 7) are formed.

In the first embodiment, as shown in FIG.
As shown in FIG. 3, a control unit 50 for controlling the operation of the hydraulic lock means 32 and the first and second drive motors 40, 42 is provided, and the control unit 50 receives an operation signal from the operation section 51. , The signals from the position detection sensor 33 are input, and the hydraulic lock means 32 and the first and second drive motors 4 from the control unit 50 based on these input signals.
Signals for controlling their operation are output to 0 and 42.

According to the above configuration, when the axial center of the pair of chuck claws 25d, 25d in each material transfer chuck 25 with respect to the axial center of each die 13 and each punch 14 is displaced or adjusted, First, after releasing the connection between the chuck frame 23 and the drive rod 26, the hydraulic lock means 3 is controlled by the control unit 50 by operating the operating portion 51.
After the lock state by 2 and 32 is released, after that, the worm gear 39b is rotated by the drive motor 40, and the frame member 21 is chucked together with the frame member 21 around the support shaft 38 rotatably supported by the support base 34. Two
5 is swung from the normal use position shown by the solid line in FIG. 3 to the upper retracted position as shown by the chain line. Then, in this state, the drive motor 42 rotates the base shaft 36 to rotate the support base 34 around the base shaft 36, and the support base 34 as a whole is shown in FIG.
The material transfer chucks 25 together with the frame member 21 are automatically moved to the maintenance / inspection position (f) near the side of the main body 11 of the forging machine 10 as shown in FIG. As a result, as in the conventional case, in which the material transfer chucks 25 are moved to the upper retracted positions and maintenance and inspection work such as centering adjustment is performed, the operator does not have to press the side parts of the forging machine 10. Further, there is no need to perform work in an unreasonable posture in which the user leans on the main body 11, and various maintenance and inspection work such as centering adjustment of each material transfer chuck 25 at the maintenance and inspection position (f) is easy and smooth. Therefore, the workability and the work accuracy are improved.

After maintenance and inspection, the operation of the operating portion 51 again causes the control unit 50 to control the operation of the first and second drive motors 40 and 42. When each material transfer chuck 25 is automatically moved to the normal use position again together with the member 21, and it is confirmed by the position detection sensor 33 that the frame member 21 is surely placed in the normal use position. Means that the frame member 21 is fixed at the normal use position by the hydraulic lock means 32, so that the material transfer device chucks 25 together with the frame member 21 are kept in the normal use position and the maintenance check position along with the maintenance and inspection work. In the case of moving between the two, the movement is automated, and the workability is further improved.

In particular, in this embodiment, the centering adjustment jig 44 for each pair of chuck claws 25d, 25d in each material transfer chuck 25 is provided at the maintenance / inspection position (f), so that FIG. As shown in FIG. 4, by inserting the gauge 47 into each insertion hole 42a of the jig 44, the centering adjustment of each pair of chuck claws 25d, 25d can be performed more quickly and accurately, and the working accuracy thereof can be improved. Will be further improved.

Next, a second embodiment of the material transfer device will be described with reference to FIGS.

The construction of the forging machine and the material transferring device in the second embodiment is basically the same as that of the first embodiment. Therefore, the same reference numerals are used for the same components. Explain.

As shown in FIGS. 8 and 9, also in the second embodiment, as in the first embodiment, the plural dies 13 ... 13 are formed.
And a plurality of punching stations (a) to (e), which are opposed to each die 13 and are moved back and forth by the ram 14, constitute a plurality of stages of forging stations (a) to (e). Each of the above forging stations (a)
A material moving device 20 including a plurality of material transfer chucks 25 ... 25 for sequentially transferring materials or intermediate molded products is disposed in (e) to (e).

A support base 34 is disposed behind the frame member 21 constituting the material transfer device 20.
Arm members 21a, 21a integral with the frame member 21 are fixed to a support shaft 38 rotatably supported by the support base 34, and the support base 34 is fixed to one end of the support shaft 38. The worm gear 39b meshing with the worm wheel 39a is rotated to swing the material transfer chuck 25 together with the frame member 21 between the normal use position shown by the solid line in FIG. 9 and the upper retracted position shown by the chain line. A first drive motor 40 is provided. Further, a base shaft 36 rotatably supported behind the main body 11 of the molding machine 10 is provided.
A second drive motor 42 for rotating the support base 34 in a horizontal plane is also provided. The side portion of the main body 11 of the forging machine 10 is located at the maintenance / inspection position (f) as in the first embodiment, and the axis of each material transfer chuck 25 is located at the maintenance / inspection position (f). There is provided a centering adjustment jig 44 as a centering adjustment means for adjusting.

Further, hydraulic lock means 32, 32 similar to those of the first embodiment are provided on both sides of the frame member 21, and below the frame member 21,
A position detection sensor 33 similar to that in FIG. 4 is provided.

In the second embodiment, the connecting portion between the chuck frame 23 and the drive rod 26 which constitutes the material transfer device 20 is constructed as follows.
That is, as shown in an enlarged view in FIG. 10, a fitting recess 23 opened downward is provided at one side of the chuck frame 23.
a is formed in the fitting recess 23a.
4, a projection 26a formed at one end of a drive rod 26 that is reciprocally driven with a predetermined stroke in synchronization with the forward / backward movement is detachably fitted. The drive rod 26 causes the chuck frame 23 to move to the die 13 of each die 13. The material transfer chucks 25 mounted on the front surface of the chuck frame 23 are reciprocally driven in a parallel direction so that the material transfer chucks 25 are adjacent to each other.
It is adapted to be reciprocally driven between the three front positions of the shaft core.

On the other hand, in the second embodiment, at least the entire forging stations (a) to (e) and the arrangement portion of the material transfer device 20 are covered with the cover 52, so that noise and die during forging are produced. The cover 52 is provided with an opening 52a, which is designed to prevent the cooling oil for cooling the 13 and the punch 15 from scattering, and the opening 52a serves as an opening / closing body.
It is designed to be opened and closed by 3. A door opening / closing sensor 54 for detecting opening / closing of the slide door 53 is arranged near the slide door 53.

Also in this second embodiment, as shown in FIG.
1, the hydraulic lock means 32 and the first,
A control unit 50 for controlling the operation of the second drive motors 40 and 42 is provided, and the control unit 50 has a signal from the position detection sensor 33 and opening / closing of the slide door 53 from the door opening / closing sensor 54. And a signal for detecting the above are input, and the hydraulic lock means 32 and the first and second drive motors 40, 4 are supplied from the control unit 50 based on these input signals.
Signals for controlling the operation of the two are output.

According to the above configuration, when the axial center of the pair of chuck claws 25d, 25d in each material transfer chuck 25 with respect to the axial center of each die 13 and each punch 14 is displaced or adjusted, The slide door 53
8 from the state shown in FIG. 8 to the state shown in FIG. 12, this is detected by the door opening / closing sensor 54, and a signal is input from the door opening / closing sensor 54 to the control unit 50. . Along with this, the control unit 50 controls the hydraulic lock means 32, 32 to release the locked state by the lock means 32, 32, and thereafter, the drive motor 40 is controlled and the support base 34. The support shaft 38 rotatably supported on the support shaft 38 is rotated, and the material transfer chucks 25 together with the frame member 21 are raised about the support shaft 38 from the normal use position shown by the solid line in FIG. Will be swung to the retracted position. Then, in this state, the drive motor 42 is controlled to rotate the base shaft 36, whereby the support base 34 is rotated around the base shaft 36, and the whole of the support base 34 is shown in the state shown in FIG. 12, the material transfer chucks 25 along with the frame member 21 are automatically moved to the maintenance / inspection position (f) near the side of the main body 11 of the forging machine 10.
As a result, as in the conventional case, in which the material transfer chucks 25 are moved to the upper retracted positions and maintenance and inspection work such as centering adjustment is performed, the operator does not have to press the side parts of the forging machine 10. Further, it is possible to easily and smoothly perform various maintenance / inspection work such as centering adjustment of each material transfer chuck 25 at the maintenance / inspection position (f) without being forced to work in an unreasonable posture leaning on the main body 11. As a result, the workability and the work accuracy are improved.

When the slide door 54 is closed after the maintenance and inspection, the control unit 50 controls the operation of the first and second drive motors 40 and 42. At the same time, each material transfer chuck 25 is automatically moved to the normal use position again, and when it is confirmed by the position detecting means 33 that the frame member 21 is surely placed in the normal use position, The frame member 2 is provided by the hydraulic lock means 32.
1 is fixed at the normal use position, so that at the time of maintenance and inspection work, by simply opening and closing the slide door 54, the material transfer device chucks 25 as well as the frame member 21 are moved to the normal use position and the maintenance and inspection position. It will be automatically moved between them, and the workability will be further improved.

FIG. 13 shows a third embodiment of the material transfer device. Also in this third embodiment, the structures of the forging machine and the material transfer device are basically the same as those of the first and second embodiments. Therefore, the same components will be described using the same reference numerals.

As shown in the figure, also in the third embodiment, as in the first and second embodiments, a plurality of dies (not shown) are used.
And a plurality of punching stations (a) to (e), which are opposed to the respective dies and are moved back and forth by the ram 14, constitute a plurality of forging stations (a) to (e).
On the main body 11 of 0, each of the above forging stations (a)
A material moving device 2 including a plurality of material transfer chucks 25 ... 25 for sequentially transferring materials or intermediate molded products to (e)
0 is placed. A support base 34 is arranged behind the frame member 21 constituting the material transfer device 20, and the support shaft 3 rotatably supported by the support base 34.
8, arm members 21a, 21a provided integrally with the frame member 21 and extending rearward are fixed, and the support base 34 is meshed with a worm wheel 39a fixed to one end of the support shaft 38. Worm gear 39
By rotating b, the material transfer chucks 25 together with the frame member 21 are rotated by 90 ° with the frame member 21 and the material transfer chucks 25 directed upward with the normal use position in the illustrated state and the support shaft 38 as the center. A first drive motor 40 that swings between the swinging retracted position is provided.

Further, an arm member 56 extending forward is attached to a mounting bracket 55 fixed to the upper surface of the rear portion of the main body 11 of the molding machine 10, and the support base 34 is attached to the tip of the arm member 56. One side surface of the arm member 56 is rotatably supported in a cantilever state via a base shaft 36, and the support shaft 34 together with the base shaft 36 is in a horizontal plane between the upper end surface of the arm member 56 and the lower surface of the support base 34. A predetermined drive actuator 57 that is swung by is provided.

Then, the side portion of the main body 11 of the forging machine 10 is at the maintenance / inspection position (f) as in the first and second embodiments, and each material is transferred to the maintenance / inspection position (f). A centering adjusting jig 44 is provided as a centering adjusting unit for adjusting the axial center of the chuck 25. Further, hydraulic lock means 32, 32 similar to those of the first embodiment are provided on both sides of the frame member 21, and below the frame member 21, a position detection sensor similar to that shown in FIG. (Not shown).

As the drive actuator 57, a hydraulic actuator having a rotary shaft integrated with the base shaft 36 and configured to rotate the rotary shaft by hydraulic pressure may be used. The base shaft 36 may be rotated by the same structure as that of the first embodiment.

According to the above construction, the drive motor 40 and the drive actuator 57 are the same as in the first and second embodiments.
In accordance with the above operation, the material transfer device 25 together with the frame member 21 is moved to the normal use position shown in the drawing and the main body 11 of the molding machine 10 as in the case of the first and second embodiments shown in FIGS. Will be moved to and from the maintenance / inspection position (f) provided on the side of the tool, and the centering adjustment of each material transfer chuck 25 will be performed at the maintenance / inspection position (f) using the jig 44. It is possible to make adjustments. As a result, each of the material transfer chucks 25 is moved to the upper retracted position on the main body 11 of the molding machine 10 to perform maintenance and inspection work such as centering adjustment, as in the conventional case. As in the case of performing it, the worker does not have to work in an unreasonable posture in which the operator leans out on the main body 11 from the side portion of the forging machine 10, and the chuck 25 for transferring each material is placed at the maintenance / inspection position (f). Various maintenance such as centering adjustment of Supposed to be carried out inspection easily and smoothly, it is possible to improve the working accuracy with its workability.

Also in this third embodiment, a control unit 50 similar to that of the first and second embodiments is provided, and the first drive motor 40, drive actuator 57 and hydraulic lock means 32 are provided by the control unit 50. , 32 may be automatically controlled.

FIG. 14 shows another embodiment of the centering adjusting means in the above-mentioned first to third embodiments. In this embodiment, in the vicinity of the side portion of the body 11 'of the forging machine 10'. An inspection device 44 'serving as a centering adjustment means is arranged at a maintenance inspection position (f) provided on the side of the main body 11' of the forging machine 10 '. Frame 45a 'disposed on the bracket 45', a base 46 'movably mounted on the frame 45a', and a screw rotatably supported by a bracket 46a 'fixed to the base 46'. Axis 4
7 ', an inspection member 48' which is movable in the vertical direction along the screw shaft 47 ', and has magnifying lenses 48a', 48b fixed to the tip thereof, and a drive means 49 for rotating the screw shaft 47 '. ′, And the gripping state of the material or the intermediate molded product b ′ gripped by each material transfer chuck 25 ′ moved to the maintenance / inspection position (f) is magnified by the magnifying lenses 48 a ′, 48 b ′. Then, the misalignment of each material transfer chuck 25 'is inspected and adjusted by visual inspection. According to this, the holding state of the material or the intermediate molded product b'by the material transfer chucks 25 'is enlarged by the magnifying lenses 48a', 48b ', and the material transfer chucks 2 are formed.
The accuracy of the centering adjustment of 5'is further improved.

In the above first and second embodiments,
Although the support base 34 is configured to be rotated by being rotationally driven by the drive motor 42, the present invention is not limited to this. For example, the base shaft 36 may be rotationally driven by rotational drive means utilizing hydraulic pressure. It may be configured.

Further, as shown in FIG. 5, the forging number setting unit 60, which can arbitrarily set the forging number of the forging machine 10, is connected to the control unit 50, and
By controlling the operation of the hydraulic lock means 32 and the first and second drive motors 40 and 42 when the number of times of forging set by the setting unit 60 reaches a predetermined number of times,
Chuck 2 for each material transfer device together with the frame member 21
The 5 may be moved from the normal use position to the maintenance inspection position.

Further, the cam shaft 28 for opening and closing the pair of chuck claws 25d, 25d in each of the material transfer chucks 25 is configured to be rotatably supported by the frame member 21. It may be configured to swing to the upper retracted position together with the frame member 21.

Needless to say, the concept of the present invention also includes a material transfer device equipped in a nut former, for which it is not necessary to open and close each chuck claw constituting the device.

[0057]

As described above, according to the first aspect of the present invention, the first and second drive means cause the material member chucks together with the frame member to perform maintenance and inspection in the vicinity of the side portion of the forging machine body from the normal use position. Since it is moved to the position, when performing maintenance and inspection work such as centering adjustment of each of the above-mentioned material transfer chucks, the molding machine main body can be At the maintenance and inspection position near the side, various maintenance and inspection work such as centering adjustment of each material transfer chuck can be performed easily and smoothly.
The workability as well as the work accuracy can be improved.

In particular, according to the second aspect of the invention, since the centering adjustment means for each material transfer chuck is provided at the maintenance and inspection position, the centering adjustment for each chuck can be performed more quickly and accurately. Therefore, the working accuracy can be further improved.

According to the third aspect of the invention, the operation of the first and second driving means and the fixing means is controlled by the control means, and the material transfer chucks are automatically moved to the maintenance and inspection position together with the frame member. After the maintenance and inspection work, each material transfer chuck is automatically moved to the normal use position again together with the frame member, and the frame member is normally used by the fixing means based on the signal from the position detecting means. Since it will be fixed in position, the movement between the normal use position of the frame member and each material transfer device and the maintenance inspection position accompanying the maintenance inspection work will be automated, further improving the workability. be able to.

Further, according to the fourth invention, the operation of the first and second drive means is controlled by the control means in accordance with the opening / closing of the opening / closing body simply by opening / closing the opening / closing body provided in the opening of the cover. Then, the material transfer chuck together with the frame member is automatically moved between the normal use position on the forging machine body and the maintenance inspection position near the side portion of the molding machine body, and after the maintenance inspection. Means that the frame member moved to the normal use position is fixed at the normal use position by the fixing means based on the signal from the position detecting means, thereby further improving the workability during maintenance and inspection work. Can be made.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a multi-stage forging machine equipped with a material transfer device according to a first embodiment.

FIG. 2 is an enlarged front view of the material transfer device.

3 is a cross-sectional view showing the configuration of the material transfer device as seen from the line AA in FIG.

FIG. 4 is an enlarged cross-sectional view of a main part as seen from the line BB in FIG.

FIG. 5 is a control block diagram of a control system that controls the operation of the lock means and the first and second drive motors.

FIG. 6 is a plan view showing a rotation state of a frame member to a maintenance / inspection work position.

FIG. 7 is an enlarged cross-sectional view of a main part seen from the line CC in FIG.

FIG. 8 is a plan view of a main part of a multi-stage press forming machine equipped with the material transfer device according to the second embodiment.

FIG. 9 is a sectional view showing the structure of a material transfer device according to a second embodiment.

FIG. 10 is an enlarged view of a connecting portion between a chuck frame and a drive rod that constitutes the material transfer device according to the second embodiment.

FIG. 11 is a control block diagram of a control system that controls the operation of the lock means and the first and second drive motors.

FIG. 12 is a plan view showing a rotation state of the frame member to a maintenance / inspection work position.

FIG. 13 is a plan view of an essential part of a multi-stage forging machine equipped with the material transfer device according to the third embodiment.

FIG. 14 is an enlarged cross-sectional view showing a centering adjusting means of another embodiment.

FIG. 15 is a side view of a conventional material transfer device.

[Explanation of symbols]

 10 Multi-stage Press Forming Machine 11 Main Body 13 Die 15 Punch 21 Frame Member 25 Material Transfer Chuck 25a Chuck Main Body 32 Hydraulic Lock Means 33 Position Detection Sensor 34 Support Base 36 Spindle 40 Spindle 40 First Drive Motor 41a Gear 41b Drive Gear 42 Second drive motor 44 Centering adjustment jig 44 'Inspection device 50 Control unit 51 Operation part 52 Cover 52a Opening 53 Slide door 54 Door opening / closing sensor 57 Drive actuator (a) to (e) Pressing station (to) Maintenance inspection position

Claims (4)

[Scope of utility model registration request] 1. A plurality of material transfer chucks for sequentially moving a material to each forging station by reciprocating in a direction in which a plurality of forging stations are arranged which are composed of opposing dies and punches, and these chucks reciprocate. A material transfer device for a multi-stage press forming machine having a frame member that is movably supported, wherein the frame member is provided on a support table provided behind or above the frame member between a normal use position and an upper retracted position. A first driving unit that is swingably supported up and down and that is provided on the support base to swing the frame member to a retracted position; and the support base is rotated to transfer the respective materials together with the frame member. A material transfer device for a multi-stage forging machine, comprising: a second drive means for moving the chuck to a maintenance / inspection position near a side portion of the forging machine body. 2. A plurality of material transfer chucks that reciprocate in a direction in which a plurality of forging stations are arranged, each of which comprises a die and a punch facing each other, and sequentially transfer a material to each forging station, and reciprocating these chucks. A material transfer device for a multi-stage press forming machine having a frame member that is movably supported, wherein the frame member is provided on a support table provided behind or above the frame member between a normal use position and an upper retracted position. A first driving unit that is swingably supported up and down and that is provided on the support base to swing the frame member to a retracted position; and the support base is rotated to transfer the respective materials together with the frame member. Second driving means for moving the chuck to a maintenance / inspection position near a side portion of the forging machine body, and the first driving means for swinging the frame member to the retracted position. 2. A multi-stage press forming machine characterized in that centering adjusting means for the chucks is provided at positions corresponding to the shaft cores of the material transfer chucks that are moved together with the frame member to the maintenance and inspection position by the two driving means. Material transfer device. 3. A plurality of material transfer chucks for sequentially transferring a material to each forging station by reciprocating in a direction in which a plurality of forging stations are arranged, each of which comprises a die and a punch facing each other, and these chucks are reciprocated. A material transfer device for a multi-stage press forming machine having a frame member that is movably supported, wherein the frame member is provided on a support table provided behind or above the frame member between a normal use position and an upper retracted position. A first driving unit that is swingably supported up and down and that is provided on the support base to swing the frame member to a retracted position; and the support base is rotated to transfer the respective materials together with the frame member. Second driving means for moving the chuck to a maintenance / inspection position near the side of the forging machine body; and fixing means for fixing the frame member in a normal use position,
Position detection means for detecting the position of the frame member in the normal use position, and operation of the first and second drive means for moving the frame member between the normal use position and the maintenance and inspection position, A material transfer device for a multi-stage press forming machine, comprising: a control means for controlling the operation of the fixing means based on a signal from the position detection means. 4. A plurality of material transfer chucks for sequentially moving a material to each forging station by reciprocating in a direction in which a plurality of forging stations are arranged which are composed of dies and punches facing each other, and these chucks reciprocate. A material transfer device for a multi-stage press forming machine having a frame member that is movably supported, wherein the frame member is provided on a support table provided behind or above the frame member between a normal use position and an upper retracted position. A first driving unit that is swingably supported up and down and that is provided on the support base to swing the frame member to a retracted position; and the support base is rotated to transfer the respective materials together with the frame member. Second driving means for moving the chuck to a maintenance / inspection position near the side of the forging machine body; and fixing means for fixing the frame member in a normal use position,
Position detection means for detecting the position of the frame member in the normal use position, a cover for covering at least the whole of the forging station and the material transfer device arranged in the vicinity of the station, and an opening / closing body provided in the opening of the cover. And an opening / closing detection means for detecting opening / closing of the opening / closing body, and first and second drives for moving the frame member between a normal use position and a maintenance / inspection position based on a signal from the opening / closing detection means. And a control means for controlling the operation of the fixing means on the basis of a signal from the position detecting means.