JPH0646591Y2 - Material transfer device in multi-stage press forming machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a material transfer device in a multi-stage press forming machine, and more particularly, a connecting portion for connecting the material transfer device and a driving means for reciprocally driving the material transfer device at a predetermined interval. Concerning the structure of.

(Prior Art) In general, a plurality of forging dies arranged in parallel at a predetermined position on a machine base and a plurality of forging punches which are arranged so as to face the respective forging dies and are moved back and forth by a ram. Between, and the multi-stage forging forming, in which the material supplied from one side of the machine base is gradually and precisely forged in order to form parts of various shapes such as bolts and nuts. The machine is equipped with a material transfer device for sequentially transferring the above materials to the front position of the axial center of each forging die.

This material transfer device is usually placed on a machine base above the position where each forging die is disposed, and if necessary, the entire supporting frame is movable rearward and upward centering on the rear end portion, A movable frame, which is supported on the support frame so as to be capable of reciprocating in the juxtaposed direction of the forging dies, and to which a plurality of material transfer chucks for holding the material are attached, and a bolt on one side of the movable frame. By driving a drive rod, the tip of which is pivotally attached through a connecting means such as a nut or a nut, at a predetermined interval, the movable frames are reciprocally driven to adjoin the material transfer chucks attached to the movable frames. It is configured to reciprocate between the axial front surface positions of the forging die.

(Problems to be solved by the invention) By the way, when exchanging, inspecting or adjusting a part or all of the material transfer chucks in the material transfer device as described above, a plurality of material transfer chucks are attached. By turning the support frame that supports the movable frame rearward and upward around the rear end,
The above-mentioned material transfer chuck can be easily replaced or inspected and adjusted, and, for example, even when inspecting and adjusting each forging die and the forging punch disposed opposite thereto, Similar to the above, by turning the support frame rearward and upward, the entire material transfer device including the movable frame movably supported by the support frame is raised to the retracted state on the machine base, whereby each forging is performed. The work space is secured as wide as possible between the die and the forging punch, so that the inspection and adjustment work of each forging die and the forging punch can be performed easily. The driving rod to be driven is connected by the connecting means. Therefore, when the support frame is turned rearward and upward as described above, the movable frame by the connecting means is moved. It is necessary to release the connection between the movable frame and the drive rod by disconnecting the movable frame and the drive rod, and after checking and adjusting the material transfer chuck or each forging die or forging punch, the movable frame and the drive rod are again separated. Therefore, the work of separating and connecting the movable frame and the drive rod is extremely cumbersome and requires a long time, and the workability is significantly reduced.

The present invention addresses the above problems, for example,
For the purpose of checking and adjusting the material transfer chuck or each forging die and forging punch, the entire material transfer device including the movable frame supported by the support frame so as to reciprocate by rotating the support frame rearward and upward. When the retracted state is erected on the machine base, the movable frame and the drive means for reciprocally driving the movable frame can be easily separated without any complicated work, and the material transfer can be performed. An object of the present invention is to make it possible to connect the movable frame and the driving means extremely easily when the movable frame and the driving means are connected again after the inspection, adjustment, and adjustment of the working chuck, the pressing die, and the pressing punch.

(Means for Solving the Problems) In order to solve the above problems, the present invention is configured as follows.

That is, a plurality of forging dies arranged side by side on the end surface of the machine base, a plurality of forging punches arranged on the front surface of the ram moving forward and backward toward the end surface so as to face the respective forging dies, A plurality of material transfer chucks for sequentially transferring materials are attached to a plurality of forging stations including a forging die and a forging punch, and a movable frame for reciprocating these material transfer chucks between adjacent forging dies, The movable frame is reciprocally supported via a parallel link mechanism, and the movable frame is movable so that the movable frame can be retracted to an upper non-operating position, and the movable frame is synchronized with the forward and backward movement of the ram. In a material transfer device in a multi-stage forging molding machine having a driving means for driving by means of a driving means, the driving means can be provided at a connecting portion between the movable frame and the driving means. A driven member that moves in the moving direction of the frame is provided, a part of the movable frame is overlapped on the driven member, and one of the driven member and the movable frame in the overlapping portion is engaged with the recess. And, on the other hand, an engagement pin that disengages from the engagement recess when the movable frame moves to the non-actuated position and that engages with the engagement recess when the movable frame moves from the non-actuated position to the actuated position. Is provided.

A lock mechanism may be provided to fix the movable frame to the support frame at a predetermined position when the movable frame is moved to the non-actuated position.

(Operation) According to the above configuration, when the movable frame is retracted to the upper non-operating position for the purpose of, for example, exchanging the chuck for material transfer or inspecting and adjusting the forging die and the forging punch. By moving the frame to the non-actuated position, the engagement pin is disengaged from the engagement recess, which separates the movable frame from the drive means. Also, after exchanging the material transfer chuck or checking and adjusting the forging die and forging punch,
By moving the movable frame from the non-actuated position to the actuated position again, the engaging recess and the engaging pin are engaged with each other, so that the movable frame and the driving means are automatically coupled.

As described above, in the present invention, the movable frame is automatically engaged and disengaged from the drive means only by moving the movable frame from the operating position to the non-operating position or vice versa. Thus, the work of separating and connecting the movable frame and the driving means can be performed extremely easily, and the workability thereof can be further improved as compared with the conventional art.

Further, when a lock mechanism for fixing the movable frame to the support frame at a predetermined position when the movable frame is moved to the non-operating position is provided, the movable frame is moved to the non-working position and the operating position is changed from the non-operating position. When the movable frame and the supporting frame are moved to each other, the movable frame and the supporting frame can be prevented from being displaced from each other, so that the movable frame and the driving means are separated and then the movable frame and the driving means are again separated. When connecting with, without causing an error in the relative positional relationship between the engaging recess and the engaging pin,
As a result, the movable frame and the drive means can be connected smoothly and reliably.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 are a plan view and a vertical sectional front view of a main part of a multistage forging machine equipped with the material transfer device according to the present embodiment, respectively, showing a predetermined position of a machine base 2 of the forging machine 1. Is provided with a die block 3, and the die block 3 has a plurality of forging dies 4 ... 4 at regular intervals.
(See FIG. 2) is fixed. Further, on the front surface of the ram 5 that moves back and forth toward each of the forging dies 4, the same number of forging punches 6 ...
Are arranged so as to face each forging die 4. Then, between each forging punch 6 which is moved back and forth by the ram 5 and the forging die 4, a raw material (not shown) is subjected to the forging process step by step from coarse to fine.

At one side of the die block 3, a supply quill 7 for supplying the wire A (see FIG. 2) is arranged in front of the die block 3 and is pushed forward from the supply quill 7. The cut wire A is cut by a cutter mechanism (not shown) to form a material having a predetermined size.

Further, above the die block 3, there is a material transfer device 8
The material transfer device 8 is equipped with the machine base 2
A supporting frame 9 placed on the upper side, a pair of left and right swinging arms 10, 10 having one ends pivotally attached to both sides of the supporting frame 9 and swingable, and the pair of swinging arms 10, A movable frame in which both sides are rotatably supported at the other end of 10 and can be reciprocated in the direction in which the forging dies 4 are arranged in parallel.
11, a movable frame 11 and a supporting frame 9, both side portions of which are rotatably supported by the pair of swing arms 10 and 10, respectively, and the movable frame.
On the front surface of 11, there are material transfer chucks 13 ... 13 fixedly installed at the same intervals as the forging dies 4 and arranged in the same number as the forging dies 4, and both side portions of the support frame 9 are provided. The pair of rearwardly extending arm portions 9a, 9a are fixedly provided, and the rear end portions of the respective arm portions 9a, 9a are
Each of them is fixed to a support shaft 14 arranged behind the machine base 2. Therefore, by rotating the support shaft 14 in a predetermined direction by an appropriate drive device (not shown) such as a motor,
The pair of arm portions 9a, 9a fixed to the support shaft 14 are pivoted rearward and upward, whereby the support frame 9 and the movable frame 11 are included as shown by the chain line in FIG. The entire material transfer device 8 is set in a retracted state in which it is erected upward. In addition, with the support frame 9,
The swing arm 10, the movable frame 11, and the intermediate frame 12 constitute a parallel link mechanism.

Further, on the machine base 2 behind the support frame 9, there is provided a cam shaft 16 on which an opening / closing cam 15 ... 15 for each chuck 13 for opening / closing each material transfer chuck 13 is fixed. The plurality of cam arms 17 ... 17 oscillated by the respective cams 15 are supported on the upper surface of the support frame 9 at predetermined intervals, and the tip ends of the respective cam arms 17 abut. Arm 18 ...
18 are swingably supported on the upper surface of the intermediate frame 12 at predetermined intervals, and the rod members 19 projecting upward from the upper ends of the material transfer chucks 13 at the tips of the rocker arms 18. 19 are locked. As a result, each cam 15 is rotated by the rotation of the cam shaft 16,
As the cam arms 17 and rocker arms 18 swing, the rod members 19 are driven in the vertical direction, so that the material transfer chucks 13 are opened and closed.

In the present embodiment, the movable frame 11 supported by the support frame 9 so as to be reciprocally movable via the pair of swing arms 10, 10 is adjacent to the forging die in synchronization with the advancing / retreating operation of the ram 5. The movable frame 11 and the drive rod 20 reciprocatingly driving the movable frame 11 are configured as follows.

That is, as shown in the enlarged view of FIGS.
Is a support bracket 23 fixed by mounting bolts 22 and 22 at a predetermined position (see FIG. 1) of the machine base 2 in the vicinity of the side portion of the support frame 9, one end of each of which is supported by spindles 24 and 25. The first rocking lever 26 and the second rocking lever 27 which are pivotally attached to be rockable, and the drive rod 20 fitted to the tip end portion of the first rocking lever 26 and the upper end portion thereof. A first pin member 28 connected to the second pin member 30 and a second pin member 30 which is fitted to the tip end portion of the second rocking lever 27 and integrally formed with a tapered engagement recess 29 at the upper end portion. An engagement which is fixed to the upper surface 11a of one side of the movable frame 11 (see FIG. 4) and has a lower end 31a which is engaged with an engagement recess 29 of the second pin member 30. And a pin 31.
Then, the lower end portion of the first pin member 28 and the second pin member 30.
A connecting member 32 for connecting the first and second pin members 28, 30 is provided at the lower end of the connecting member 32, and slits 32a, 32a (see FIG. 4) are provided on both sides of the connecting member 32. ) Are formed respectively, and the slits 32a, 32a are tightened by tightening bolts 33, 33 to connect the first and second pin members 28, 30. As a result, the first and second driving rods 20 are reciprocally moved.
The swing levers 26 and 27 are swung within a predetermined range, and
A second pin member fitted to the tip of the second swing lever 27.
Engaging pin 31 engaged with engaging recess 29 at the upper end of 30
The movable frame 11 is reciprocally driven via the.

As shown in FIG. 5, a slit 11b is formed on the upper surface 11a of one side of the movable frame 11, and
The engagement pin 31 is fixed to the movable frame 11 by fastening the slit 11b to the fastening bolt 34. Further, as shown in FIGS. 5 and 6, the engaging recess 29 and the engaging pin at the upper end portion of the second pin member 30.
Since the predetermined gaps 35, 35 are formed between the lower end portion of the engaging pin 31 and the engaging concave portion 29.
The engagement and disengagement of 31a can be easily performed.

Further, a lock mechanism 36 for fixing the movable frame 11 to the support frame 9 as required is provided on the upper surface 11a of one side of the movable frame 11.
As shown in FIGS. 1 and 4, the reference numeral 36 designates a base member 37 having one end fixed to one side of the fixed frame 9 and the other end of the base member 37 fixed above the movable frame 11. And a cylinder 38 located on the upper surface of the cylinder 3 integrally formed at a predetermined position on the upper surface 11a of one side of the movable frame 11.
8 and a recess 39 with which the lower end of the piston rod 38a is engaged. As shown by the chain line in FIG. 4, the cylinder 38 is actuated to move the lower end of the piston rod 38a to the movable frame 11. The movable frame 11 and the support frame 9 are integrally fixed by engaging with the recess 39 formed on the upper surface of the movable frame 11. The engagement between the piston rod 38a and the recess 39 in the lock mechanism 36 causes the ram 5 to retract as shown in FIG. 1, and the movable rod 11 moves to the position shown in the drawing by the movement of the drive rod 20 interlocking with this. It shall be performed in a shaken state.

According to the above-mentioned structure, the second swing lever 27 connected to the drive rod 20 via the connecting member 32 and the one side surface 11a of the movable frame 11 are disengaged from each other and engaged with each other. By providing the engaging pin 31 and the engaging pin 31 to be engaged with the engaging recess 29, for the purpose of, for example, inspection and adjustment of the forging die 4 and the forging punch 6, or replacement of the material transfer chuck 13. As shown in FIG. 3, when the support frame 9 is turned rearward and upward around the support shaft 14 and the movable frame 11 supported by the support frame 9 is rotated upward and retracted, As shown by the chain line in FIGS. 4 and 5, the movable frame 11 is moved only by moving upward.
Side engaging pin 31 and the engaging recess 29 on the second swing lever 27 side are separated from each other, whereby the movable frame 11 and the drive rod 20 side are connected via the connecting member 32. The second swing lever 27 is separated, and thereafter, the movable frame 11 is again moved forward from the upper retracted position, whereby the engagement pin 31 on the movable frame 11 side and the second swing lever 27 side are moved. The movable frame 11 and the drive rod 20 are automatically connected to each other by engaging with the engaging concave portion 29.

Moreover, in the present embodiment, as shown in FIGS. 5 and 6, gaps 35, 35 are formed between the lower end portion 31a of the engaging pin 31 and the engaging concave portion 29 for engaging the same. As a result, as shown by the chain line in FIG. 5, the rotation locus of the lower end portion 31a of the engaging pin 31 when the movable frame 11 is rotated upward is located in the gap 35. Thereby, when the engagement pin 31 is engaged with and disengaged from the engagement recess 29, the engagement pin 31 can be smoothly engaged and disengaged without generating a twist between the lower end 31a of the engagement pin 31 and the engagement recess 29. .

As described above, in the present invention, only by moving the movable frame 11 to the upper retracted position, the engaging pin 31 and the second swing lever 27 provided on the movable frame 11 side are automatically provided. The engaging recessed portions 29 of the second pin member 30 are engaged with and disengaged from each other, whereby the work of separating and connecting the movable frame 11 and the drive rod 20 can be performed extremely easily. The property can be further improved as compared with the conventional one.

Further, the normal drive rod 20 is configured to operate in synchronization with the forward and backward movement of the ram 5, and when the material transfer chuck 13 or the like is inspected, the drive of the ram 5 (that is, the drive source for driving the ram) is stopped. Therefore, the drive rod 20 that receives power from this drive source is also stopped. Therefore, at the time of the above inspection, the rod mechanism shown in FIG.
Directly below the piston rod 38a at 36, the movable frame 1
By setting the recess 39 on the upper surface of 1 so that the recess 39 is located, the piston rod 38a can be thrust into and engaged with the recess 39 when the forging machine 1 is stopped. And
When the movable frame 11 is fixed to the support frame 9 when the movable frame 11 is moved upward by the lock mechanism 36, the movable frame 11 and the support frame 9 are fixed and the displacement between them is prevented. When the movable frame 11 and the drive rod 20 are separated and then the movable frame 11 and the drive rod 20 are connected again, the engagement pin member 31 on the movable frame 11 side and the engaging pin member 31 are removed. As a result, the movable frame 11 and the drive rod 20 can be smoothly and surely connected to each other without causing the relative positional relationship with the engaging concave portion 29 that is engaged to be distorted.

(Effect of the Invention) As described above, according to the present invention, the engaging concave portion and the engaging pin can be moved to each other only by moving the movable frame from the operating position to the upper non-operating position or from the non-operating position to the operating position. By engaging and disengaging, the movable frame and the driving means for reciprocating the movable frame are automatically separated and connected, which greatly separates and connects the movable frame and the driving means. It can be easily performed, and the workability thereof can be further improved as compared with the conventional one.

Further, by providing a lock mechanism for fixing the movable frame to the support frame at a predetermined position when the movable frame is moved to the non-actuated position, the movable frame is moved to the non-actuated position and moved from the non-actuated position to the actuated position. At this time, it is possible to prevent the displacement between the movable frame and the support frame, and when the movable frame and the driving means are separated and then the movable frame and the driving means are connected again, This makes it possible to connect the movable frame and the drive means smoothly and surely without causing any deviation in the relative positional relationship between the fitting recess and the engaging pin.

[Brief description of drawings]

The drawings show an embodiment of the present invention, and FIGS. 1 and 2 are a plan view, a vertical sectional front view, and a main view of a main part of a multistage forging machine equipped with a material transfer device according to this embodiment, respectively. FIG. 6 is a sectional view of an essential part seen from the III-III cutting line in FIG. 2, and FIGS. 4 and 5 are enlarged sectional views of the connecting portion seen from the IV-IV cutting line and the VV cutting line in FIG. 1, respectively. The drawing is a cross-sectional view showing the engagement state of the engagement pin and the engagement recess. 1 ... Multi-stage press forming machine, 2 ... Machine stand, 4 ... Pressing die, 6 ...
Forging punch, 8 ... Material transfer device, 9 ... Support frame, 11
... Movable frame, 13 ... Chuck for material transfer, 20 ... Driving means (driving rod), 21 ... Connection part, 29 ... Engagement recessed part, 31 ... Engagement pin.

Claims (2)

[Scope of utility model registration request] 1. A plurality of forging dies (4) arranged side by side on an end face of a machine base (2) and a front face of a ram (5) moving back and forth toward the end face, facing each of the forging dies (4). A plurality of forging punches (6) arranged so as to perform a plurality of material transfer chucks for sequentially transferring the material to a plurality of forging stations each including a forging die (4) and a forging punch (6) facing each other. A movable frame (11) to which the material transfer chuck (13) is attached and which reciprocates between the adjacent forging dies, and the movable frame (11) can reciprocate via a parallel link mechanism. A supporting frame (9) that supports the movable frame (11) and is movable so as to be able to retract to the upper non-operating position, and the movable frame (11) are synchronized with the forward and backward movement of the ram (5). A driving means (20) for reciprocating A material transfer device in a forging machine, which is driven by a connecting portion between the movable frame (11) and a driving means (20) and which is moved in the moving direction of the movable frame (11) by the driving means (20). Material (27)
Is provided, and a part of the movable frame (11) is overlapped on the driven member (27) so that either one of the driven member (27) and the movable frame (11) in the overlapping portion is engaged. A fitting recess (29) is provided, and on the other hand, the movable frame (11) is disengaged from the engagement recess (29) when the movable frame (11) is moved to the non-operating position, and the movable frame (11) is moved from the non-operating position to the operating position. A material transfer device in a multi-stage forging machine, comprising an engagement pin (31) which engages with an engagement recess (29) when the material is moved to. 2. A practical use characterized by comprising a lock mechanism (36) for fixing the movable frame (11) to a support frame (9) at a predetermined position when the movable frame (11) is moved to a non-actuated position. A material transfer device for a multi-stage press forming machine according to claim 1.