JPH069734U - Material transfer device for multi-stage press forming machine - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to improve workability and work 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 forging machine. . A frame member 21 is swingably supported up and down on a support base 34 rotatably provided on a main body 11 of a press molding machine via a support shaft 38, and the support shaft 34 is supported by the support shaft 3 described above.
A first drive motor 40 is provided which rotates 8 to vertically swing the material transfer cloth 25 together with the frame member 21 around the support shaft 38 between a normal use position and an upper retracted position. The support base 34 is rotated to rotate the frame member 2
A second drive motor 42 for moving each of the material transfer chucks 25 to the maintenance inspection position in the vicinity of the side portion of the main body 11 of the forging machine is also provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a material transfer device for a multi-stage forging machine that sequentially presses materials in stages by a plurality of forging stations composed of dies and punches facing each other. More specifically, the above materials are transferred to each forging station. The present invention relates to a material transfer device having a plurality of material transfer chucks that are sequentially transferred.

[0002]

[Prior art]

 A multi-stage press forming machine for forming bolts, nuts, and various other parts, uses the material supplied from one side of the machine base to perform roughing at multiple press stations composed of dies and punches facing each other. It is designed to perform the forging process step by step, and this forging machine receives the above materials or the intermediate formed products forged at each forging station and transfers them to the forging station on the downstream side in sequence. Equipment is provided.

As shown in FIG. 15, the material transfer device generally includes a frame member 2 arranged on an upper surface of a body 1 of a forging machine, and a pair of swing arms 3 (only one of which is shown in the figure). ) Via a movable frame 5 supported by a plurality of forging dies 4 (only one is shown) so as to reciprocate in the juxtaposed direction, and from one side of the main body 1 mounted on the front surface of the movable frame 5. Plural materials to be fed (not shown) or intermediate molded products 6 discharged from the front of each die 4 and to be sequentially transferred to the front surface of the die 4 on the downstream side as the movable frame 5 reciprocates. A transfer chuck 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 are provided, and the movable frame 5 is appropriately driven by a crank mechanism or the like. By driving by Each material transfer chuck 7 mounted on the front surface of the movable frame 5 is configured to be reciprocally driven between the axial front surface positions of the adjacent die 4. 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 driven into the die 4 by a punch (not shown), and the steps are sequentially performed from coarse to fine. It is designed to be pressed.

An arm member 2 a is fixed to the frame member 2, and one end of the arm member 2 a is fixed to a support shaft 9 rotatably supported by the main body 1. By rotating the, the 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]

[Problems to be solved by the device]

 By the way, in the above-mentioned multi-stage forging machine, it is a prerequisite for obtaining a good forging product that the axis of each material transfer chuck and the axis of the punch and die are completely aligned. However, if there is a slight misalignment between these shaft cores, defective products will be formed. In an extreme case, the punch and the material transfer chuck or the material transferred by the material transfer chuck and punched by the punch interfere with the die, resulting in damage to the die. It will be. Therefore, maintenance and inspection work such as inspection of the axial center of each material transfer chuck with respect to the axial center of the punch and die or adjustment thereof is regularly performed. During this maintenance and inspection work, the chain line in Fig. 15 is used. As shown, each material transfer chuck 7 is moved together with the frame member 2 to the upper retracted position, and the centering of each chuck 7 is adjusted using a centering gauge or the like. In this case, if the frame member 2 or each material transfer chuck 7 supported by the frame member 2 is simply moved to the upper retracted position, the frame member 2 and each material transfer chuck 7 will still be in the main body of the forging machine. It is located above 1, so that it is necessary for an operator to lean out on the main body 1 from the side of the forging machine to perform centering adjustment of each material transfer chuck 7, etc. The workability was extremely poor because I was forced to take an uncomfortable posture during work.

Further, it is necessary to perform the centering adjustment of each material transfer chuck 7 by using the centering gauge in the above-mentioned unreasonable posture, and therefore, there has been a problem that the accuracy 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 to automate the movement of the chuck between the normal use position and the maintenance and inspection position. However, how to realize this requirement has been an issue.

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]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention is configured as follows.

First, a device according to claim 1 of the present application (hereinafter referred to as a first device) reciprocates in a direction in which a plurality of forging stations configured by a die and a punch facing each other reciprocally move each material. In a material transfer device of a multi-stage forging machine, which has a plurality of material transfer chucks sequentially transferred to a forging station and a frame member that supports these chucks so as to be able to reciprocate, the frame member is provided behind or above it. A first drive means for swinging up and down between a normal use position and an upper retracted position on the provided support base and swinging the frame member to the retracted position provided on the support base. And a second drive means for rotating the support table and moving the material transfer chucks together with the frame member to a maintenance / inspection position near a side portion of the press molding machine body. Characterize.

In addition to the structure of the first invention, the invention according to claim 2 of the present application (hereinafter referred to as the second invention) is a state in which the frame member is swung to the retracted position by the first driving means. It is characterized in that centering adjusting means for the chucks is provided at positions corresponding to the axes of the material transfer chucks moved together with the frame member to the maintenance and inspection position by the second drive means.

Further, in addition to the configuration of the first invention, a device according to claim 3 of the present application (hereinafter, referred to as a third device) includes a fixing means for fixing a frame member to a normal use position, and the normal use position. Position detecting means for detecting the position of the frame member in the vehicle and the operation of the first and second driving means so as to move the frame member between the normal use position and the maintenance and inspection position, and the position detection. And a control means for controlling the operation of the fixing means on the basis of a signal from the means.

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

[0014]

[Action]

 According to the first aspect of the invention, the frame member swingably supported by the support base is swingable to the retracted position above the normal use position by the first drive means provided on the support base. Then, in this state, by rotating the support table by the second drive means, the material transfer chucks together with the frame member are rotated along with the rotation of the support table to perform maintenance and inspection in the vicinity of the side portion of the forging machine body. Will be moved to the position. As a result, when performing maintenance and inspection work such as centering adjustment of the above-mentioned material transfer chucks, the maintenance inspection position in the vicinity of the side of the molding machine body does not have to force the operator as in the conventional case. In this, various maintenance and inspection work such as centering adjustment of each material transfer chuck can be performed easily and smoothly, which improves workability and work accuracy.

In particular, according to the second aspect, since the centering adjustment means for each material transfer chuck is provided at the maintenance / 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 invention, the operation of the first and second drive means is controlled so as to move the frame member 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 based on the control means, the operation of the first and second drive means is controlled by the control means, and the control means controls the operation of the first and second drive means together with the frame member swung to the upper retracted position. The material transfer chuck will be automatically moved to the maintenance inspection position near the side of the forging machine body. 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 is fixed by the fixing means based on the signal from the position detecting means. Since the members will be fixed in the normal use position, when the material transfer device together with the frame member is moved between the normal use position and the maintenance and inspection position during maintenance and inspection work, the movement is automated. As a result, workability will be further improved.

Further, according to the fourth aspect, the frame member is set to the normal use position and the maintenance and inspection position based on 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 is provided for controlling the operation of the first and second driving means so as to move between them, and for controlling the operation of the fixing means based on the signal from the position detecting means, the opening / closing of the opening / closing body is performed. The operation of the first and second drive means is controlled by the control means in accordance with the above, and the material transfer chucks together with the frame member are maintained in the normal use position on the main body of the forging machine and the side portion of the main body of the molding machine. In addition to being automatically moved to and from the inspection position, after maintenance and inspection, the frame member moved to the normal use position is used by the fixing means based on the signal from the position detecting means. It will be fixed at the working position, which will further improve the workability during maintenance and inspection work.

[0018]

【Example】

 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 transferring apparatus according to the present invention. As shown in FIGS. 1 and 2, at a predetermined position of a main body 11 of a multi-stage forging machine 10, A die block 12 (see FIG. 2) is fixed, and a plurality of dies 13 ... 13 (five in the illustrated example) are arranged in parallel on the die block 12 at regular intervals. Further, the same number of punches 15 ... 15 as the die 13 are 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 punches 15 and the dies 13 form a plurality of stages of forging stations (a) to (e). Then, each punch 15 is moved back and forth toward each die 13 by the ram 14 to roughly remove the material (not shown) supplied from one side of the machine base at each forging station (a) to (e). By precisely and stepwise forging, products such as bolts and nuts or parts of various shapes are continuously formed.

As shown in FIG. 2, a material supply quill that supplies the wire rod a from one side of the die block 12 to the front side of the die block 12 from the rear side of the main body 11 of the forging machine 10. 16 is arranged, and the wire rod a pushed forward by a predetermined amount from the material supply quill 16 is reciprocally driven in a predetermined stroke in a direction in which the dies 14 are arranged in parallel with each other in association with the forward / backward movement of the ram 14. By being cut by the cutter means 17 to be cut, a material having a predetermined size is formed. Further, a pusher 18 is arranged adjacent to the material supply quill 16, and the material cut into a predetermined size by the cutter means 17 is pushed forward by the pusher 18 toward the front. .

Further, 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). The 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 and swingable. A chuck frame 23, which is rotatably supported at the other ends of the pair of swing arms 22, 22 and is capable of reciprocating in the direction in which the dies 13 are arranged in parallel, and the chuck frame 23. Above the front surface of the chuck frame 23, an intermediate frame 24, both sides of which are rotatably connected to the pair of swing arms 22, 22 between the frame member 21 and the chuck frame 23, respectively. 2 has a plurality of material transfer chucks 25 ... 25 which are provided at the same intervals as the dies 13 arranged in parallel and in the same number as each die 13. Each of these material transfer chucks 25 is shown in FIG. As shown, a chuck body 25a attached to the front surface of the chuck frame 23, chuck arms 25c and 25c rotatably supported on the chuck body 25a via a pair of support shafts 25b and 25b, and chucks 25c and 25c, respectively. It is composed of chuck claws 25b and 25b attached to the lower end of the arm 25c, respectively.

Further, one end of a drive rod 26 that 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 reciprocally driving the chuck frame 23 in the juxtaposed direction of the dies 13 by the drive rod 26, the material transfer chucks 25 mounted on the front surface of the chuck frame 23 are moved between the front positions of the axes of the adjacent dies 13. It is designed to drive back and forth.

Further, on the upper surface of the main body 11 behind the frame member 21, open / close cams 27 ... 27 for each chuck 25 for opening / closing each material transfer chuck 25 are fixedly mounted on a cam drive shaft. 28 are rotatably provided, and a plurality of cam arms 29 ... 29 that are swung in accordance with the rotation of each of the cams 27 are supported on the upper surface of the frame member 21 at predetermined intervals, and A plurality of rocker arms 30 ... 30 with which the tip portions of the cam arms 29 come into contact are swingably arranged at a predetermined interval on the upper surface of the intermediate frame 24, and the above-mentioned material transfer to the front end portions of these rocker arms 30. Each of the rod members 31 ... 31 protruding upward from the upper end of the device 25 is locked. Although not shown, on both side surfaces of the lower end of each rod member 31, there is provided a gear portion which meshes with a sector gear integrally provided with each of the support shafts 25b, 25b supporting the pair of chuck arms 25c, 25c. The rod members 31 are vertically driven by the rocking of the cam arms 29 and the rocker arms 30 accompanying the rotation of the cams 27, whereby the chuck arms 25c, 25c are moved to the support shafts 25b, 25c. The chuck claws 25d, 25d are opened and closed by being rotated around 25b. As a result, as shown in FIG. 2, the material that has been cut to a predetermined size by the cutter means 17 and has been pushed forward by the pusher 18 or the intermediate molded product that has been discharged forward from each die 13 (not shown). Is clamped by a pair of chuck claws 25d, 25d in each material transfer chuck 25, and in this state, the chuck frame 23 is moved forward by the drive rod 26 to the front surface of the adjacent die 13 to form the material and the intermediate molding. The product is transferred to the front position of the axial center of the die 13, and the chuck claws 25d, 25d are opened by the punching of the material and the intermediate molded product into the die 13, and thereafter, In the above, the robot is returned to the front position of the die 13 on the preceding stage side again.

As enlargedly shown in FIGS. 1 and 4, hydraulic lock means 32 for fixing the frame member 21 on the main body 11 is provided on both sides of the frame member 21. The hydraulic lock means 32 is provided with inclined projecting pieces 32a, 32a integrally provided on both side portions of the frame member 21, respectively, and the projecting pieces 32a, 32a can be engaged with and disengaged from the frame, respectively. It is composed of piston rods as lock pieces 32b, 32b for fixing the entire member 21 and hydraulic cylinders 32c, 32c for engaging and disengaging the lock pieces 32b, 32b with the respective projecting pieces 32a, 32a.

Further, as shown in FIG. 4, is the frame member 21 securely placed between the lower surface of the frame member 21 and the upper surface of the die block 12 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 includes a tapered concave portion 33a formed on the lower surface of the frame member 21 and a fixed concave portion 33a formed on the die block 13. The protrusion 33b is fitted with a tapered protrusion 33b, and the protrusion 33b is formed with a supply hole 33c to which compressed air is supplied. When mounted, the recess 33a and the protrusion 33b are fitted to each other, the compression in the recess 33a rises, and the frame member 21 is securely mounted on the main body 11. If it is not placed, compressed air will leak between the recess 33a and the protrusion 33b, and the frame member 21 can be reliably placed on the main body 11 based on the pressure change in the recess 33a. Whether it is placed or not is detected.

Further, in the present embodiment, as shown in FIGS. 1 to 3, a support base 34 is arranged behind the cam shaft 28. The base portion 34a of the support base 34 is fixed to the upper end portion of a vertically extending base shaft 36 rotatably supported by a bearing member 35 fixed to the rear end of the body 11 of the press molding machine 10 via a key 36a. In addition, a pair of support brackets 37, 37 are fixedly mounted on the upper surface of the support base 34, 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, a worm wheel 39a is fixed to one end of the support shaft 38 so as to rotate integrally with the support shaft 38, and a worm gear 39b meshing with the worm wheel 39a is rotated. A first drive motor 40, which is a pulse motor or the like, is attached to the support bracket 37. As a result, by rotating the support shaft 38 in the predetermined direction by the first drive motor 40, the pair of arm members 21b, 21b are rotated rearward and upward with the support shaft 38 as the center. As shown by the chain line in FIG. 3, the material transfer chucks 25 supported by the frame member 21 and the chuck frame 23 are swung to the retracted position above the normal use position.

A gear 41a is integrally attached to the lower end of the base shaft 36, and a second drive motor 42 such as a pulse motor for rotating a drive gear 41b meshing with the gear 41a is provided. It is attached to the rear surface of the main body 11 of the forging machine 10 via a support bracket 43, and by rotating the base shaft 36 by the second drive motor 42, the support base 34 is centered on the base shaft 36 in a horizontal plane. It is designed to be rotated.

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 is performed at this maintenance inspection position (f). A centering adjusting jig 44 as a centering adjusting means for adjusting the shaft center of each pair of chuck claws 25d, 25d of each material transfer chuck 25 in the apparatus 20 is fixed to the side surface of the main body 11. It is movably mounted on a frame 46 arranged on a bracket 45, and a centering gauge is mounted on the jig 44 at a pitch corresponding to the regular axial center interval of the pair of chuck claws 25d, 25d. 44a for inserting 47 (see FIG. 7) are formed.

In the first embodiment, as shown in FIG. 5, a control unit 50 for controlling the operations of the hydraulic lock means 32 and the first and second drive motors 40 and 42 is provided. The control unit 50 receives an operation signal from the operation unit 51 and a signal from the position detection sensor 33, and the control unit 50 outputs the hydraulic lock based on these input signals. A signal for controlling the operation of the means 32 and the first and second drive motors 40 and 42 is output.

According to the above configuration, when the axial center of the pair of chuck claws 25d, 25d in the material transfer chuck 25 with respect to the axial center of each die 13 and each punch 14 is adjusted and is adjusted. First, the connection state between the chuck frame 23 and the drive rod 26 is released, and then the operation unit 51 is operated to release the lock state by the hydraulic lock means 32, 32 controlled by the control unit 50. After that, the worm gear 39b is rotated by the drive motor 40, and each material transfer chuck 25 together with the frame member 21 is rotated around the support shaft 38 rotatably supported by the support base 34 as shown in FIG. As compared with the normal use position shown by the solid line, it is swung 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 about the base shaft 36, and the entire support base 34 is shown in FIG. 6 from the state shown in FIG. After being rotated to the state, 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 press molding machine 10. As a result, as in the conventional case, the material transfer chuck 25 is moved to the upper retracted position to perform maintenance and inspection work such as centering adjustment of the material transfer chuck 25. Since the operator is not forced to lean on the main body 11 in an unreasonable posture, various maintenance / inspection operations such as centering adjustment of each material transfer chuck 25 at the maintenance / inspection position (f) can be performed easily. The work can be performed smoothly, and the workability as well as the work accuracy are improved.

Further, after maintenance and inspection, the operation of the operation unit 51 is again performed so that the operation of the first and second drive motors 40 and 42 is controlled by the control unit 50. It is confirmed that the material transfer chucks 25 are automatically moved to the normal use position again together with the frame member 21 and that the frame member 21 is securely placed in the normal use position by the position detection sensor 33. In this case, the frame member 21 is fixed at the normal use position by the hydraulic lock means 32, so that the material transfer device chuck 25 together with the frame member 21 is kept in the normal use position during maintenance and inspection work. When moving between the maintenance and inspection position, the movement will be automated and workability will be further improved.

In particular, in the present embodiment, the centering adjustment jig 44 for each pair of the chuck claws 25d, 25d of each material transfer chuck 25 is provided at the maintenance / inspection position (f). As shown in FIG. 7, 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. The work accuracy will be further improved.

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

The structures of the forging machine and the material transferring device in the second embodiment are basically the same as those in the first embodiment, and therefore, the same reference numerals are used for the same constituent members. Explain.

As shown in FIGS. 8 and 9, also in the second embodiment, similar to the first embodiment, the plurality of dies 13 ... 13 and the dies 13 are opposed to each other and are moved back and forth by the ram 14. The punches 15 ... 15 form a plurality of stages of forging stations (a) to (e), and on the main body 11 of the forging machine 10, materials for the forging stations (a) to (e) are provided. A material moving device 20 including a plurality of material transfer chucks 25 ... 25 for sequentially transferring the intermediate molded product is arranged.

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

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

In the second embodiment, the connecting portion between the chuck frame 23 and the drive rod 26 that constitutes the material transfer device 20 is configured as follows. That is, as shown in an enlarged view in FIG. 10, a downwardly opening fitting recess 23a is formed on one side of the chuck frame 23, and the fitting recess 23a is used for advancing and retracting the ram 14. A protrusion 26a formed at one end of a drive rod 26 that is synchronously reciprocally driven with a predetermined stroke is detachably fitted. The drive rod 26 reciprocates the chuck frame 23 in the direction in which the dies 13 are arranged in parallel. By driving, the material transfer chucks 25 mounted on the front surface of the chuck frame 23 are reciprocally driven between the axial front surface positions of the adjacent dies 13.

On the other hand, in the second embodiment, at least the whole of the 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 can be reduced. The cover 52 is provided with an opening 52a, and the opening 52a is opened and closed by a slide door 53 as an opening / closing body. It is supposed to be done. 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. 11, a control unit 50 for controlling the operations of the hydraulic lock step 32 and the first and second drive motors 40, 42 is provided. The control unit 50 receives a signal from the position detection sensor 33 and a signal from the door opening / closing sensor 54 for detecting opening / closing of the slide door 53, and based on these input signals. A signal for controlling the operation of the hydraulic lock means 32 and the first and second drive motors 40, 42 is output from the control unit 50.

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

When the slide door 54 is closed after maintenance and inspection, the control unit 50 controls the operations 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 21 is fixed at the normal use position by the hydraulic locking means 32. Therefore, at the time of maintenance and inspection work, simply opening and closing the slide door 54 allows the frame member 21 and each material transfer device to be mounted. The chuck 25 is automatically moved between the normal use position and the maintenance / inspection position, further improving the workability. Become.

FIG. 13 shows a third embodiment of the material transfer device, and in this third embodiment, the constructions 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 drawing, in the third embodiment as well, similar to the first and second embodiments, a plurality of dies (not shown) are faced to each die and are moved back and forth by the ram 14. The punches 15 ... 15 form a plurality of stages of forging stations (a) to (e), and the forging stations (a) to (e) are provided on the main body 11 of the forging machine 10. A material moving device 20 including a plurality of material transfer chucks 25 ... 25 for sequentially transferring materials or intermediate molded products is arranged. A support base 34 is disposed behind the frame member 21 constituting the material transfer device 20, and a support shaft 38 rotatably supported by the support base 34 is provided integrally with the frame member 21. The arm members 21a, 21a extending rearward are fixed to the support base 34, and a worm gear 39b meshing with a worm wheel 39a fixed to one end of the support shaft 38 is rotated on the support base 34 to rotate together with the frame member 21. Between each material transfer chuck 25 in the normal use position in the state shown in the drawing, and between the retracted position in which the frame member 21 and each material transfer chuck 25 are swung 90 ° upward about the support shaft 38. A first drive motor 40 that is swung by is provided.

Further, an arm member 56 extending forward is attached to a mounting bracket 55 fixedly mounted on the rear upper surface of the main body 11 of the molding machine 10, and the support base 34 is attached to the tip end 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 base 34 together with the base shaft 36 is placed horizontally between the upper end of the arm member 56 and the lower surface of the support base 34. A predetermined drive actuator 57 that swings inside is provided.

The side portion of the main body 11 of the forging machine 10 is located at the maintenance / inspection position (f), which is the same as in the first and second embodiments. A centering adjusting jig 44 is provided as a centering adjusting means for adjusting the axis of the material transfer chuck 25. Further, hydraulic lock means 32, 32 similar to those in 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. 4 is provided. (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 configured to rotate by the same configuration as in the first embodiment.

According to the above-mentioned configuration, as in the first and second embodiments, the material transfer device 25 together with the frame member 21 is normally operated by the drive motor 40 and the drive actuator 57 as shown in the figure. Be moved between the use position and the maintenance / inspection position (f) provided on the side of the main body 11 of the molding machine 10 as in the case of the first and second embodiments shown in FIGS. Therefore, the centering adjustment of each material transfer chuck 25 can be adjusted using the jig 44 at the maintenance and inspection position (f), which allows the material transfer chuck 25 to be adjusted as in the conventional case. 25 is moved to the upper retracted position on the main body 11 of the molding machine 10 so that the operator can move the main body 11 from the side of the forging machine 10 as in the case of performing maintenance and inspection work such as centering adjustment. Unreasonable figure leaning on top 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 perform work by force. At the same time, the working accuracy can be improved.

In the third embodiment as well, a control unit 50 similar to that of the first and second embodiments is provided, and the control unit 50 controls the first drive motor 40, drive actuator 57 and hydraulic lock means 32. The operation of 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 main 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 '. A frame 45a 'disposed on the bracket 45', a base 46 'movably mounted on the frame 45a', and a bracket 46a 'fixed to the base 46' so as to be rotatably supported. The screw shaft 47 'is rotated by the screw shaft 47', an inspection member 48 'which is movable in the vertical direction along the screw shaft 47', and has magnifying lenses 48a ', 48b fixed at the ends thereof. Drive means 49 ′ 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) by the magnifying lenses 48 a ′, 48 b ′. It is configured to inspect and adjust the misalignment of each material transfer chuck 25 'by enlarging and visually inspecting. According to this, the holding state of the material or the intermediate molded product b'by the above-mentioned material transfer chucks 25 'is magnified by the magnifying lenses 48a', 48b ', and the material transfer chucks 25'. The accuracy of the centering adjustment of is further improved.

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

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 is set by the setting unit 60. When the number of times of forging has reached a predetermined number, the operation of the hydraulic locking means 32 and the first and second drive motors 40 and 42 is controlled, so that the material transfer chuck 25 is moved together with the frame member 21. It may be moved from the normal use position to the maintenance inspection position.

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

Needless to say, the concept of the present invention also includes a material transfer device such as a material transfer device equipped in a nut former that does not need to open and close each chuck claw constituting the device.

[0057]

[Effect of device]

 As described above, according to the first aspect of the invention, the first and second driving means move the material transfer chuck together with the frame member from the normal use position to the maintenance inspection position near the side of the forging machine body. Therefore, when performing maintenance and inspection work such as centering adjustment of the above-mentioned material transfer chucks, there is no need to force the worker to take an unreasonable posture as in the past, and the vicinity of the side of the molding machine body Various maintenance and inspection work such as centering adjustment of the material transfer chucks can be easily and smoothly performed at the maintenance and inspection position, and the workability and the work accuracy can be improved.

Particularly, according to the second aspect, 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 can be further improved.

According to the third aspect of the invention, the operation of the first and second drive means and the fixing means is controlled by the control means so that the material transfer chucks are automatically moved to the maintenance and inspection position together with the frame member. Also, 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 fixed by the fixing means based on the signal from the position detecting means. Since it will be fixed at the normal use position, the movement between the normal use position and the maintenance inspection position of the frame member and each material transfer device accompanying the maintenance inspection work will be automated. It is possible to further improve the sex.

Further, according to the fourth aspect, 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. Now, together with the frame member, each material transfer chuck is automatically moved between the normal use position on the forging machine body and the maintenance inspection position near the side of the molding machine body, and the maintenance inspection is performed. After that, the frame member moved to the normal use position will be fixed at the normal use position by the fixing means based on the signal from the position detecting means, whereby the workability during maintenance and inspection work will be improved. Can be further improved.

[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 Sliding 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 configured to 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 the 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. 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 adjustment 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 / inspection position by the two driving means. Material transfer device. 3. 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 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, 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 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, 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.