JPH031093B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a transfer unit of a multi-stage part former in which a material is sequentially supplied to each stage heading section by a transfer unit and then sequentially forged into a predetermined shape. This invention relates to a device used when performing alignment with the arm unit removed from the former body, that is, when performing so-called external setup work.

(Prior art and its problems) The transfer unit in the multi-stage part former as described above has a plurality of chuck means attached to a single frame corresponding to the dies of each stage heading section. , is connected to a pair of left and right horizontal feed swing arms on the former body side via arm connection shafts provided at both ends of the frame, and the horizontal movement of the cross feed swing arms causes the horizontal movement of the cross feed swing arms to move through the frame. Each chucking means is caused to reciprocate in the parallel direction of each stage heading section.

Each chucking means in such a transfer unit must be accurately centered with respect to the die set in each stage heading section, but conventionally, the centering work of each chucking means was performed on the former body. This can be done with the transfer unit set, or by setting each chucking means removed from the frame of the transfer unit into a chucking means centering jig equipped with a material holder corresponding to a die. Centering work was performed individually for each tracking method.

When performing alignment work with the former set in the former body, the former body must be left idle until the work is completed.
Not only does this lead to a decrease in the operating rate, but also the work must be done in a very narrow space, making it difficult to efficiently perform high-precision centering work. Furthermore, when performing centering work for each chucking means individually using a chucking means centering jig as in the latter case, the centering work is not performed for the die that will actually be used. ,
Depending on the accuracy of the material holding part of the jig, there is a possibility that accurate centering effect cannot be obtained when it is attached to the former body. This had the disadvantage that it required a great deal of time and effort as it had to be attached and detached for the alignment work.

(Means for Solving the Problems) The present invention proposes a centering device capable of solving the above-mentioned conventional problems, and its feature is that a die for die setting for a part former is used. It consists of a combination of a die setting jig stand that removably supports a holding frame and a transfer unit support stand. A die guiding concave groove is provided for guiding the die inserted into and taken out from each die holding hole of the die holding frame, and the supporting stand is positioned relative to the die holding frame fitted and supported by the jig stand. A support means which is slidably supported on the both side walls in a movable manner and removably supports and fixes the frame of the transfer unit which is removably set on the parts former on the support stand; and this support means. A driving means is provided for switching between an upright position and a horizontally laid-down position by swinging the transfer unit up and down, and by switching the supporting means supporting and fixing the transfer unit to a horizontally laid-down position, each chucking means in the transfer unit can be switched to the above-mentioned position. The structure is configured to correspond to each die held in a die holding frame on a jig stand.

(Function of the Invention) According to the above centering device according to the present invention, the die holding frame actually used in the parts former is placed on the jig table, and the die actually used in the same way is placed on the jig table. The dice are fitted onto each die guide groove on the jig table, and each die is moved along the guide groove and fitted into each die holding hole of the die holding frame, thereby making the die relative to the die holding frame. Perform setting. Next, the frame of the transfer unit removed from the parts former is supported and fixed to the supporting means in an upright position, and then the supporting means is rotated by the driving means and switched to a sideways position, so that the frame is supported by the supporting means. Each chucking means of the transferred transfer unit and each die supported by the die holding frame are opposed to each other in the die axial direction, and in this state, the support base supporting the transfer unit is overlapped on the die holding frame. The chucking means of the transfer unit and each die held in the die holding frame are moved along the both side walls of the jig stand to the position where they are set in the former body. It is possible to bring them close to exactly the same state. In this state, each chucking means and the corresponding die are aligned.
When the alignment work is completed, the support means is swung to an upright position by the drive means, the transfer unit is removed from the support means and set in a predetermined position on the former body, and the die holding frame on the jig stand is removed. can be set and used in the former body as needed.

(Example) Next, an example of a transfer unit in a parts former and an example of a support structure for facilitating attachment and detachment of the transfer unit will be described based on FIGS. 1 to 4.

Reference numeral 1 denotes a transfer unit, and on the front side of its frame 2, a plurality of chucking means 3a to 3e are vertically attached at the same intervals as the die (punch) pitches of each stage heading section in the parts former. Horizontal feed swing arm coupling shafts 4a and 4b are rotatably supported by U-shaped portions 2a and 2b connected to both ends of the frame 2 via bearings 5, respectively. Moreover, the U-shaped portion 2a,
A wire locking pin 6 is attached to each of the wires 2b. Reference numerals 7a and 7b denote a pair of left and right lateral-feeding swinging arms that are horizontally swingably supported by a support shaft 8, and are interlocked and connected to each other so as to move in parallel by an interlocking rod 9. A bearing recess 10 into which the coupling shafts 4a, 4b fit is formed, and the arm coupling shafts 4a, 4b fitted into the bearing recess 10 are coupled to the swing arms 7a, 7b by bolts 11, respectively. , the frame 2 is supported so as to be movable laterally in the parallel direction of the chucking means 3a to 3e. Reference numeral 12 denotes a push/pull drive rod detachably connected to one end of the frame 2 via a support shaft 13. By pushing and pulling the push-pull drive rod 12 by a crank mechanism or a cam mechanism (not shown), the frame 2 reciprocates by one pitch of each chucking means 3a to 3e.

The chucking means 3a has a material reversing function and is provided with a driven gear 14 at its upper end. The other chucking means 3b to 3e have an elevating rod 15 for driving the openable and closable grips to open and close. Reference numeral 16 denotes a cylinder unit arranged in parallel so as to correspond to each of the chucking means 3a to 3e, and is equipped with a bearing arm 18 at its upper end that can be horizontally swung around the lifting piston rod 17. The bearing arm 18 of the corresponding cylinder unit 16 has a seesaw whose one end overlaps the upper end of the lifting piston rod 17 and whose other end is fitted into the engaging portion 15a of the lifting rod 15 of the chucking means 3b to 3e. A motion lever 19 is pivotally mounted by a support shaft 20. Further, on the bearing arm 18 of the cylinder unit 16 corresponding to the chucking means 3a, there is a rearwardly extending fan-shaped gear 22 which is removably pivotally attached to the upper end of the chucking means 3a by a support shaft 21 and engages with the driven gear 14. The parts are removably fitted together. Reference numeral 23 denotes a cam attached to a camshaft 24 so as to correspond to each cylinder unit 16, and the free end of a cam driven lever 26 pivotally connected to each cylinder unit 16 by a support shaft 25 pushes up each cylinder unit 16. At a location where the seesaw lever 19 is also used, one end of the seesaw lever 19 is sandwiched between the lifting piston rod 17 and the lifting piston rod 17.

Lifting rod 15 for chucking means 3b to 3e
The lifting force of the piston rod 17 for pushing up the cylinder unit 16 is transferred to the seesaw movement lever 19.
It is lowered by receiving it downwardly through the handle, and the grip, which can be opened and closed, is closed. However, cam 2
3, the cam driven lever 26 pushes down one end of the seesaw movement lever 19 against the urging force of the pushing up piston rod 17, and the other end of the seesaw movement lever 19 pulls up the lifting rod 15, so that the grip is opened. .
Further, in the chucking means 3a, the sector gear 22 rotates around the support shaft 21 with the swinging of the bearing arm 18 due to the lateral movement of the frame 2, the driven gear 14 is rotated, and the grip is rotated by 180 degrees. degrees of rotation around a vertical axis.

The transfer unit 1 configured as described above transfers the material of each step heading part corresponding to each chucking means 3a to 3e to the next one by reciprocating the frame 2 and gripping operation of each chucking means 3a to 3e. The material that is sequentially fed to the heading section of the step and transferred by the chucking means 3a is reversed back and forth at the same time as it is transferred.In order to facilitate the attachment and detachment of the transfer unit 1 to the former body, the following steps are taken. It consists of

That is, U-shaped portions 27a and 27b at both ends of the frame 27 that support a plurality of cylinder units 16 corresponding to the respective chucking means 3a to 3e.
The lateral feed swing arms 7a and 7b are supported by a support shaft 8, and the frame 27 supports the camshaft 2.
The vertical swing arms 31a, 31b are connected to the bearing members 28, 29 that support both ends of the 4, through concentric horizontal support shafts 30a, 30b, and are supported vertically swingably, and one of the rotatable horizontal A gear 34 fixed to an output shaft 33a of a motor 33 with a reducer is engaged with a gear 32 fixed to a support shaft 30a, and the gear 32 and frame 27 are connected to a connecting member 3.
It is connected and integrated by 5.

According to this configuration, the frame 2 is rotated by operating the motor 33 and rotating the gear 34.
7 can be rotated up and down within a range of 90 degrees as shown in Figures 3 and 4, and this frame 27
By upward movement, the transfer unit 1 can be moved upward together with each cylinder unit 16 and the cam driven lever 26, and can be positioned horizontally on the upper part of the former body. By moving the transfer unit 1 upward in this manner, the pair of left and right horizontal feed swing arms 7a and 7b change from a horizontal position to an upright position, and are located at both ends of the frame 2 in the upwardly facing bearing recess 10. The arm connecting shafts 4a and 4b are now mounted. In this state, remove the bolts 11 fixing the arm coupling shafts 4a, 4b to the swing arms 7a, 7b,
The hanging wire 36 is locked at both ends of the frame 2 using the wire locking pins 6, and the frame 2, that is, the transfer unit 1 is attached to the former body using a chain block, hoist, overhead traveling crane, etc. It can be lifted from. Of course, before lifting the transfer unit 1, for example, remove the seesaw movement levers 19, the sector gear 22, and the push/pull drive rod 12 shown in phantom lines in FIG. 1, and remove the frame 2 on the transfer unit 1 side. The frame 27 on the former main body side must be in a state where they can be separated.

Next, an embodiment of the centering device of the present invention for setting the transfer unit 1 removed from the former body as described above will be described with reference to FIGS. 5 to 10.

This centering device consists of a combination of a die setting jig stand A and a transfer unit support stand B, and the jig stand A is used to set the die holding frame 37 for die setting with respect to the part former. In the transfer unit 1, a groove 41 for guiding a die is provided in the upper surface of the bottom plate 40 that connects the side walls 39a and 39, into which the parts 38a and 38b are vertically and removably fitted, and that is parallel to the side walls. Chatting means 3a-3
Multiple rows are installed in parallel at the same pitch as e,
The die holding frame 37 has grooves 4 for guiding each die on the jig stand A when the die holding frame 37 is fitted onto the jig stand A.
By sliding the die 42 fitted and mounted on the groove 41 in the axial direction, the die holding holes 43a to 43e into which the die 42 fits are formed.
are arranged side by side. Each die holding hole 43a~
43e fits into an area of 180 degrees or more in the circumferential direction above a horizontal line located below the center position of the die 42, so that the lower part of the die 42 is exposed from the die holding holes 43a to 43e. Even though the die holding frame 37 is lifted, the dice 42 will not fall off from the frame 37.

The die holding frame 37 is lifted from the jig stand A with the dice 42 fitted and held in each of the die holding holes 43a to 43e, and placed on the die lower support frame installed in the die holding section of the parts former. It is placed and fixed. Further, when the die 42 set in the parts former is removed for replacement or the like, it is lifted up while being released from the die lower support frame and placed on the jig table A. That is, it is difficult to manually attach and detach the large and heavy die 42 used for forging large parts to the die support portion of the part former, and in such a case, the die holding frame 37 and the Tool stand A is used.

The present invention utilizes such a die holding frame 37 and a jig stand A, and the transfer unit support stand B is a support means for detachably supporting and fixing the frame 2 of the transfer unit 1. 44, and a drive means 45 for vertically swinging the support means 44 to switch between an upright position and a horizontally laid down position.

The support means 44 includes a pair of left and right support arms 47 that are integrally connected to each other by a connecting member 46.
a, 47b, both support arms 47a, 47b
A bearing recess 48, which is the same as the bearing recess 10 formed in the horizontal feed swing arms 7a, 7b in the parts former, is formed at the tip of the parts former. Both ends of the connecting member 46 are rotatably supported by bearings 51 on a base 50 via a concentric horizontal support shaft 49. The driving means 45 includes a reducer 53 that is interlocked with one horizontal support shaft 49a via a coupling 52 and installed on a base 50, and a handle fixed to a passive shaft 53a of the reducer 53. By rotating 54, the support arms 47a, 47b of the support means 44 can be swung up and down around the horizontal support shafts 49a, 49b. Reference numeral 55 is a pair of left and right height-adjustable stoppers installed on the base 50, and receives the support arms 47a, 47b in a horizontal position.

The supporting means 44 includes each chucking means 3 in the transfer unit 1 to be supported.
Operating means 56 for pushing down the lifting rod 15 are arranged in parallel at positions corresponding to a to 3e. Each operating means 56 includes an arm 59 supported vertically swingably on a bearing plate 57 protruding from the connecting member 46 by a support shaft 58, and an operation lever 61 pivotally connected to the bearing plate 57 by a support shaft 60. , the operating lever 61
and a link 6 that interlocks and connects the arm 59.
2, and a bolt 63 for pushing down the lifting rod attached to the tip of the arm 59.

The transfer unit support base B includes a pair of left and right members 64 connected to the bottom of both ends of the base 50.
Inside the left and right side walls 39a, 3 of the jig table A
Guide rails 65a, 6 attached to the outside of 9b
By attaching slide guides 66a, 66b that fit into the jig table A, both side walls 39a,
Dice holding frame 3 fitted and supported between 39b
7 is slidably supported by the jig stand A along the length direction of the die guide groove 41.

To explain how to use the centering device of the present invention constructed as described above, on the transfer unit support stand B set on the jig stand A, the support means 44 is moved upright by the driving means 45. Switching to the posture, the pair of left and right support arms 47a,
47b is erected as shown by imaginary lines in FIGS. 7 and 8, respectively. In such a state, the transfer unit 1 suspended by the suspension wire 36 as described above is lowered directly above the support means 44, and the arm coupling shafts 4a, 4b located at both ends of the frame 2 are connected to the pair of left and right Support arms 47a, 47
Fit into the bearing recess 48 of b. Then, the arm coupling shafts 4a, 4b are connected to the swinging arms 7a, 7b for horizontal feeding.
The arm coupling shafts 4a, 4b are fixed to the support arms 47a, 47b with bolts 67 in the same way as in the case of fixing them to the support arms 47a, 47b. On the other hand, the die holding frame 37 is set on the jig table A, and the dice 42 to be used in combination with the transfer unit 1 are fitted into the respective die holding holes 43a to 43e of the die holding frame 37 in the manner described above. I'll let it happen. When carrying out the work of fitting the die 42 into the die holding frame 37, it is sufficient to move the transfer unit support stand B to a position on the jig stand A where it does not interfere with the work.

Once the transfer unit 1 is supported by the support means 44 on the support base B as described above, the drive means 45 moves the support means 44 from an upright position to a horizontally laid down position as shown in FIGS. 5 to 8. Rotate the support arms 47a, 4 with the stopper 55.
Support 7b. As a result, each of the chucking means 3a to 3e of the transfer unit 1 supported by the support means 44 is connected to each of the die holding holes 43a to 3e in the die holding frame 37 on the jig table A.
It faces each die 42 held by 43e. In this state, the transfer unit support base B is moved along the guide rails 65a, 65b to a position overlapping the die holding frame 37, and each chucking means 3a to 3e of the transfer unit 1 is held by the die holding frame 37. The centering work of each chucking means 3a to 3e is performed in a state in which the chucking means 3a to 3e are brought close to each die 42 to 43e. At this time, each tracking means 3a to 3
The same material as the material to be handled can be gripped by the tool e, and alignment work can be performed so that the material to be gripped and the corresponding die 42 are concentric.

In order to make the chucking means 3b to 3e grip the material, these chucking means 3b to 3e
The lifting rods 15 of the chucking means 3b to 3e are pushed down using the operating means 56 corresponding to the chucking means 3b to 3e, and the pair of left and right grips 68a, shown in FIG.
All you have to do is move 68b closed. That is, as shown in FIG. 8, the operating lever 61 is rotated toward the front to rotate the arm 59 toward the side where the chucking means 3b to 3e are located, and the elevating rods of the chucking means 3b to 3e are pushed down by the bolt 63 for pushing down the elevating rods. 15, the grip claws 68a, 68b can be moved to a predetermined position. The arm 59 of the operating means 56 corresponding to the chucking means 3a which does not have the lifting rod 15 may be rotated rearward by the operating lever 61.

Further, the material reversing chucking means 3a rotates the die 4 set on the corresponding die support part 43a.
Since it is not possible to turn the grip 180 degrees when the grip is close to the front surface of the support means 4,
4 is rotated upward by the drive means 45, the grip is rotated 180 degrees by hand with an appropriate space between the grip and the die 42, and the support means 44 is again turned horizontally by the drive means 45. By rotating the die 42 and bringing the grip close to the die 42, centering work after inversion can also be performed.
Of course, the drive means 45 drives the transfer unit 1.
Instead of moving the transfer unit support stand B upward, the transfer unit support base B may be moved in a direction away from the die holding frame 37.

The above-described centering operation of the transfer unit 1 can be performed while the parts former is in operation, in which another transfer unit that has already been center-aligned is set. That is, at least two transfer units 1 are prepared, and one
While one transfer unit 1 is in use, another transfer unit 1 to be used in the next forging operation is aligned using the die 42 used in the forging operation. Therefore, prior to this centering work, there is a possibility that the chucking means 3a to 3e or only the grips may be replaced.

The work of setting the transfer unit 1 in the former body after the centering is completed can be carried out in the exact reverse order of the work procedure for removing the transfer unit 1 from the former body and setting it in the centering device.

Note that the method of supporting and fixing the frame 2 of the transfer unit 1 to the supporting means 44 is not limited to the method of the above embodiment. For example, as shown in FIG. 11, it is also possible to use a clamp mechanism 69 that presses the arm coupling shafts 4a, 4b fitted into the bearing recess 48 from the outside against the bearing recess 48.
This clamp mechanism 69 connects a clamp arm 71 with a clamp bolt 70 to a support arm 47.
Each support arm 47a, 47b is swingable around a vertical support shaft 72 when the support arm 47a, 47b is in an upright position for attaching/detaching the transfer unit 1.
7b, and when the arm coupling shafts 4a, 4b on the transfer unit 1 side are fitted into the bearing recesses 48 of the support arms 47a, 47b, or when removed, the clamp arm 71 is attached to the support shaft 72.
It is preferable that the clamp bolt 70 be configured so that it can be rotated around the clamp bolt 70 to allow the clamp bolt 70 to escape laterally.

Further, although a wire locking pin 6 is attached to the frame 2 of the transfer unit 1, this wire locking pin 6 may be omitted if the wire can be locked at another appropriate location.

(Effects of the Invention) As described above, according to the centering device for a transfer unit for a parts former of the present invention, it is possible to remove the transfer unit from the former body and center the die to be actually used in combination with the transfer unit. It is possible to perform centering work for each tracking means as an object of alignment. Therefore, if you prepare at least two transfer units, you can operate the parts former using one aligned transfer unit while the transfer unit is used for the next heading operation. The centering work of each chucking means can be performed, and the operating rate of the former body does not decrease due to the centering work. Furthermore, since there is no need to remove each chucking means from the frame of the transfer unit, the efficiency of centering work can be greatly improved.

Furthermore, when attaching or detaching the transfer unit to the support stand, the support means can be placed in an upright position and the attachment/detachment direction of the transfer unit can be in the vertical direction. The transfer unit can be installed and removed from the former body safely and efficiently while remaining in the lifting position. In addition, since the transfer unit attached to the support base can be rotated up and down, when using the material reversal type chucking means as explained in the example, both the conditions before and after reversal can be adjusted. You can also perform centering work with .

According to the present invention, in addition to the above effects, the following effects can be expected. That is, instead of directly holding the die on a support stand that supports the transfer unit via a support means, the support stand is combined with a jig stand used for attaching and detaching the die to and from the die holding frame. The configuration allows the dies held in each die holding hole of the die holding frame supported by the tool stand to be used for centering, so even when using large and heavy dies, the transfer unit can be easily adjusted. It is no longer necessary to manually move the die just for alignment work, which can improve work safety and efficiency. In addition, the jig stand and die holding frame can be used as they are for replacing large and heavy dies on parts formers, and the structure is such that the die holding part is not required as a transfer unit support stand exclusively for centering work. is simple and can be implemented economically.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway plan view showing the transfer unit set in the parts former, Fig. 2 is an enlarged cross-sectional plan view of the same main part, and Fig. 3
4 and 4 are vertical side views showing the state before and after lifting the transfer unit, FIG. 5 is a partially cutaway front view showing the jig table with the die set and the transfer unit support stand, and FIG. 7 is a longitudinal side view of the same part, FIG. 8 is a longitudinal side view showing the state before and after the transfer unit is set on the support stand, and FIG. 9 is a side view of the transfer unit between the support arm of the support stand and the transfer unit. FIG. 10 is a front view showing one of the chucking means for centering, and FIG. 11 is a partially cutaway side view of the main part showing another embodiment. DESCRIPTION OF SYMBOLS 1... Transfer unit, 2... Same frame, 3a-3e... Chucking means, 4a-
4b... Swinging arm coupling shaft for lateral feeding, 6... Pin for wire locking, 7a, 7b... Swinging arm for lateral feeding, 10, 48... Bearing recess, 12... Push/pull drive rod, 15 ... Lifting rod for opening and closing the grip, 37 ... Dice holding frame, 41 ... Concave groove for guiding the die, 42 ... Dice, 43a to 43e
...Dice holding hole, 44...Supporting means, 45...
Drive means, 47a, 47b...Support arm, 49
a, 49b...Horizontal support shaft, 53...Reduction gear, 56
... Lifting rod 1 of the tracking means 3b to 3e
Operating means for pushing down 5, 65a, 65b...guide rail, 66a, 66b...slide guide, 69...clamp mechanism.

Claims (1)

[Claims] 1 Consists of a combination of a die setting jig stand that removably supports a die holding frame for die setting on a part former, and a transfer unit support stand, and the jig stand has both ends of the die holding frame attached to it. A die guiding concave groove is provided on the upper surface between the both side walls that fit into the die holding frame to guide the die being put in and taken out from each die holding hole of the die holding frame, and the support stand is provided with:
The die holding frame is fitted and supported on the jig table, and is slidably supported on both side walls so as to be relatively movable. A supporting means for removably supporting and fixing the frame of the unit, and a driving means for vertically swinging this supporting means to switch between an upright position and a horizontally laid down position are provided, and the supporting means supporting and fixing the transfer unit is laid horizontally. A centering device for a transfer unit for a parts former, which is configured so that each chucking means in the transfer unit corresponds to each die held in the die holding frame on the jig stand by switching the position. .