JP2904407B2 - Transfer press beam connecting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam connecting device for holding a work in a transfer press and performing a three-dimensional movement of ascending and descending, moving forward and backward, and opening and closing.

[0002]

2. Description of the Related Art A forging press is provided on both the left and right sides with a transport drive device, which is horizontally connected between upper and lower dies to be installed.
Combining the three-directional movement of the book beam with lifting and lowering movement (lift movement), forward and backward movement (feed movement), and opening and closing movement (clamp movement), the workpiece is grasped between the inwardly mounted fingers of both beams. A transfer mechanism that moves to a required position and releases it has been put to practical use.

In the prior art, the drive of the transfer mechanism has been a mechanical transmission mechanism in which a cam mechanism, a gear and a rack, a coupling shaft, and the like are combined by mainly receiving rotation of a crankshaft of a forging press body. The process length (stroke), timing,
Equipped with a unique drive mechanism that can adjust the speed, etc., on both sides of the forging press, a system that applies a drive force controlled by a servomotor has been evaluated as a model that improves high precision and production efficiency.

The beam in the transfer mechanism cannot be applied to a single long tube. That is, dies are frequently replaced in daily forging work, but dies cannot be replaced if a beam is interposed between the upper and lower dies. Therefore, a long beam is divided into three parts, and when the mold is replaced, the connection between the intermediate beam and the left and right beams is released to make it free, and then the intermediate beam is attached together with the lower mold. And connect the left and right beams left on both sides with another new intermediate beam attached to the newly installed lower mold.
The basic form of forming a long beam of books is adopted.

There are various forms for disconnecting the beam in the state of being integrally connected and retreating only the intermediate beam from the forming operation range of the forging press together with the mold. In the prior art, FIG. 6 shows an example. There are several basic types. FIG. 6A is a front view showing a general relationship between the beam 1a and the forging press F with respect to the forming mechanism of the forging press, and shows connecting portions 4a and 4b of the intermediate beam 11a.
And connecting portions 5a and 5 of the left beam 12a and the right beam 12b.
b are connected to each other to form one beam 1a. FIG. 7B shows an example of a mode in which the connection of the connecting portion is disconnected and the intermediate beam 11a is removed as free due to the necessity of changing the mold. The intermediate beam 11a is composed of two hydraulic cylinders 1 rising from a lower lower mold, more precisely, a forging press.
01, the connecting portion 4b is moved to a space higher than the connecting portion with the right beam 12b so that no interference occurs between the two. (The same applies to the left side.)

FIG. 1C shows the right beam 12b and the left beam 1
In this mode, the space 2a is retracted into the transport driving devices 2a and 2b to form a space between the connecting portions with the intermediate beam 11a to prevent interference. FIG. In this case, only one side of the form of forming a space between the connecting portions of the right beam 12b and the left beam 12a is shown, and in order to prevent interference between the connecting portions due to relative linear motion of the three members. Is common in that a space is provided.

[0007]

In each of the prior arts classified here as a basic form, the connection between the intermediate beam 11a and the connection between the left beam 12a and the right beam 12b is disconnected so that free movement is possible. After that, the interference of the connecting portion is prevented by the horizontal or vertical movement. Usually, the beam of the transfer press is formed by a hollow tube with a rectangular cross section, so the minimum distance required for movement to avoid interference is at least as long as one side of the cross section of the beam, If it is not greater than the vertical or horizontal dimension of, it does not match the purpose of evacuation. For example, if a method of avoiding the connecting portion by vertical movement (FIG. (B)) is adopted, generally, the size of the rectangular cross section of the beam is about 100 mm in the height direction, while the vertical movement distance of the transfer mechanism (normal) (Stroke) is set to about 30 to 60 mm. Therefore, when the mold is changed, the transfer driving device must be provided with an ability to allow an extra movement of about 40 to 70 mm or more. In other words, it is necessary to enhance the capacity of the transport drive device to match the required movement amount, and it is necessary to enable the movement amount to be greater than the original transfer function. It is unavoidable to do.

[0008] In the method of reducing the left beam 12a, the right beam 12b and the intermediate beam 11a itself to prevent interference between the connecting portions as shown in FIGS. 6C and 6D, the inside of the transport driving device or the beam itself is reduced. A cylinder must be built in to fit a part of the beam. For that, figure (C)
In this case, the transport driving devices 2a and 2b require a horizontal stroke longer than the normal transfer operation. In FIG. 2D, the weight of the beam itself is increased, and the structure is complicated, so that the maintenance burden is forced to increase. .

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an object of the present invention is to provide a transfer press beam connecting device which has a simple structure and does not require an extra capacity increase in a transfer driving device.

[0010]

SUMMARY OF THE INVENTION A beam connecting device for a transfer press according to the present invention is a transport driving device for driving three-dimensional operation of two beams 1 laterally mounted in upper and lower dies on both left and right sides of a forging press. 2A and 2B, the beam 1 is formed by detachably connecting an intermediate beam 11 carried in and out together with a mold, and a left beam 12A and a right beam 12B engaged with the transport driving devices 2A and 2B. Applied to press, left beam 12A, right
A telescopic support cylinder 3 that converts a beam 12B into an arc motion about a point of engagement 21 with the transport driving devices 2A, 2B , a connecting portion 4 of the intermediate beam 11, and a left beam 12
A. The above problem has been solved by providing a hydraulic cylinder 6 which removably expands and contracts the connecting portion 5 at the end of the right beam 12B .

In this basic configuration, a receiver 31 at the end adjacent to the support cylinder 3 fixes a receiving table 32 located slightly above the end of the shortest support cylinder, and a free end is provided at the end of the support cylinder 3. It is preferable that the roll 33 is rotatably supported, and a triangular groove-shaped notch 13 to be fitted with the free roll 33 is formed directly above the left beam 12A and the right beam 12B.

With respect to the support and connection of the left beam 12A and the right beam 12B, one of the components
Is rotatably supported through the engagement rod 14 inserted through the guide sleeve 22 slidably is Tsu支by engagement point 21A of the A, the other is engaged directly with the transport driving device 2B consent 2
1B, the connecting part 5 for the right and left beams is provided with a connecting rod 51 fixed to a piston 61 which slides in a hydraulic cylinder 6 fitted therein, and the connecting rod 51 is an intermediate beam. A longitudinal groove 43 cut toward the inner side surface 42 is rotatably fitted into the rectangular hollow portion 41 forming the connecting portion 4 of the eleventh portion, and the inner side surface 42 and the side surface facing this surface in the rectangular hollow portion 41. An embodiment with a widened rod head 52 that removably moves between 44 is desirable.

Further, of the above construction, a sleeve 63 slidably protruding toward the piston side of a cylinder cap 62 for slidably sealing the connecting rod 51 at the tip of the hydraulic cylinder 6, and biasing the sleeve 63 toward the piston side. Spring 6
An embodiment with 4 is also highly desirable.

[0014]

In the beam connecting device according to the present invention, the left beam 12A of the intermediate beam 11 and the
When the hydraulic cylinder 6 of the connecting portion 5 that integrally connects the right beams 12B is operated, the connection of each beam is cut off and the right beam 12B is divided into three beams. In this state
When the support cylinder 3 that supports the left beam 12A and the right beam 12B is operated, the tip of the cylinder rises, and the left beam 12A and the right beam 12B are supported by the engagement point 21 with the transport driving devices 2A and 2B. It turns in an arc and a space is formed between the intermediate beam 11 and the connecting portion 4 at the end. Needless to say, this action forms a space for avoiding interference during mold replacement.

The respective functions will be described below with reference to the drawings of the corresponding embodiments. In FIG. 3, since the position of the receiving member 31 is slightly higher than the shortest height of the support cylinder 3, the beam descends more than the normal stroke at the time of mold replacement, and is first supported by the receiving member 31, and when the support cylinder 3 is raised. The free roll 33 at the tip is fitted into the triangular groove-shaped notch 13. The operation of the support cylinder is a linear motion in the vertical direction, but the left beam 12A and the right beam 12B try to make an arc motion with the engagement point 21 with the transport driving devices 2A and 2B as a fulcrum. The free roll 33 acts to gradually shift the contact point in the notch 13 formed in the bottom of the beam while rolling, thereby absorbing the difference in the amount of movement accompanying the conversion between the linear motion and the circular motion.

According to the third aspect, when the piston 61 moves by the operation of the hydraulic cylinder 6, the piston 61 moves.
At the same time, the connecting rod 51 moves left and right. Connecting rod 5
The distal end of 1 is a rod head 52 having an enlarged diameter, which is fitted into a rectangular hollow portion 41 formed in the connecting portion 4 of the intermediate beam 11, and the inner side surface 42 is shown in FIG. Pressing to the right serves to tightly connect the two beams, and at the time of mold replacement, a distance f in the rectangular hollow portion as shown in FIG.
Only to the left and hits the facing side surface 44. In this case, as shown in FIG. 1, the left beam 12A and the right beam 12B
, For example, the right beam 12B is supported at the engagement point 21B of the direct transport driving device 2B, while the other left beam 12A is
A, the end of the left beam 12A is a free end, and the intermediate beam 11 and the left beam 12A move leftward by the operation of the connecting portion of the right beam 12B, and further, the connection of the left beam 12A itself. Operation of the left beam 12A
Just move is added. The total sum of the movement amounts due to the action of the two connecting portions is absorbed by the movement of the engagement rod 14 that slides inside the guide sleeve 22.

According to the fourth aspect, the sleeve 63 protruding from the piston side of the cylinder cap 62 inside the hydraulic cylinder 6 is slidable.
5A is pressed by the tip of the piston and slides to the left against the urging force as shown in FIG. 5A when the side surface 44 of the connecting portion 4 of the intermediate beam is pressed. 5B, the spring 64 is pushed back toward the piston 61 by the urging force of the spring 64, and the tip of the rod head 52 and the side surface 4
4 and between the rear end of the rod head 52 and the inner side surface 42.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below while avoiding duplication of the operation as much as possible. FIG. 1 is a front view of a main part of a transfer press to which the present invention is applied, and FIG. 2 is a front view of the whole. Conveyance driving devices 2A and 2B are provided on both sides of the forging press body F, and the respective conveyance driving devices 2A and 2B are provided.
B engages the beam 1 rotatably at the engagement point 21.
One of the three right beams 12B is directly transported by the drive unit 2
B, and the other left beam 12A is provided on the outer peripheral surface of the guide sleeve 22 at an engagement point 21 with the transport driving device 2A.
A, and the left beam 12
An engaging rod 14 extending from the end of A is slidably inserted to allow a change in a relative distance from an engaging point at which the entire beam is pushed to the left.

The procedure for completing the molding process of one product as scheduled and switching to the molding process of another product starts with the independent support of each beam. FIG. 3 is a partial front view (A) and a side view (B) showing an embodiment around the support cylinder 3. The cradle 32 is fixed to the body F of the forging press, and the position of the cradle 31 at the tip thereof is set slightly lower than the lowest point of the stroke during the normal transfer operation of the beam, for example, at a position lower by 10 mm. . Since the outer peripheral upper surface of the free roll 33 at the tip of the support cylinder is positioned at a position several millimeters lower than the receiving tool 31, the left beam 12A and the right beam 12B that have descended
First, after being received by the receiving stand 32 and stopped, its own weight is transferred to the free roll 33 of the ascending support cylinder. Although not shown, the intermediate beam 11 is supported by a receiving table provided on a die holder for setting a lower mold.

After the left beam 12A, the right beam 12B, and the intermediate beam 11 are individually supported by the support cylinder or the pedestal, the connection of the beams is released. FIG.
(A), (B), and (C) show the connecting portion 4 of the intermediate beam 11 and the left camera.
(A) showing the positional relationship between the beam 12A and the right beam 12B with the connecting portion 5, (B) of FIG. ).
The hydraulic cylinder 6 is built in the connection outer cylinder 53 of the connection portion 5, and the piston 61 slides by oil supply / discharge from oil supply / discharge ports 65 and 66. The connecting rod 5 is connected to the piston 61.
1 are screwed together and move together, and a cylinder cap 62 is fitted on the connection side of the hydraulic cylinder 6 to seal the connection rod 51 slidably. The connecting rod 51 further projects from the end face of the cylinder cap 62, and the rod head 52, which is the distal end thereof, has entered the inside of the connecting portion 4 of the intermediate beam 11. In addition, a cover 54 is attached from the upper surface of the cylinder cap 62 to the upper surface of the rectangular hollow portion 41 of the connecting portion of the intermediate beam 11 to protect dust and foreign matter from entering.

FIG. 4 is a perspective view of the connecting portion 4 of the intermediate beam 11.
An example is shown in (C). Connecting portion 4 provided on the end portion of the intermediate beam 11 as shown in figure consists of upper and lower missing box 45 to form a rectangular hollow portion 41, the left beam 12 in the box body 45
A, a U-shaped vertical groove 43 and notches 47 and 48 are cut into the side wall of the right beam 12B on the connecting portion 5 side. Flute 43
The connecting rod 51 is rotatably fitted into the inside, and the rod head 52 at the tip fits into the rectangular hollow portion 41. Notch 4
7,48 is a convex portion to be engaged with these are provided in the cylinder cap 62, the left beam 12A, right beam 12
B and the intermediate beam 11 can be reliably connected.

Operation of hydraulic cylinder 6 and rod head 5
2 (A) and FIG. 5 shows the positional relationship of FIG.
In FIG. 4A, the oil pressure from the oil supply / drain port 65 pushes the piston 61 to the right, the rod head 52 is also pulled to the right and adheres to the inner side surface 42, and the box body 45 is connected to the cylinder cap 62. The two connecting portions 4 and 5 are in a state of being strongly engaged by being pressed against the front end surface of the connecting portion.

In FIG. 5A, the oil is supplied from the oil supply / drain port 66, the piston 61 is pushed by the hydraulic pressure, and slides to the left. The rod head 52 also moves with the piston and proceeds in the box 45 to the left. Then, the tip collides with the opposing side surface 44, and when the hydraulic pressure is further applied, the side surface 44 is pushed to the left to move the intermediate beam 11 itself. As a result of this action, a distance f is generated between the tip end surface of the cylinder cap 62 and the outer side surface 46 of the box body 45.

FIG. 5B shows a state in which the oil pressure that has pressed the piston 61 in the state of FIG. 5A has been released, and the sleeve 63 that has been slid by being pressed by the oil pressure is provided with a spring 64. since then return by force to retract the piston 61 by a distance m, the connecting section 5, since the distance f between the connecting part 6 of intact,
The rod head 52 also returns to the right to form a gap m between the side surfaces 44 of the box body 45, and a gap of a distance n also occurs between the rear surface of the rod head 52 and the inner side surface 42 of the connecting portion 4. That is, since the engagement between the connecting portion 4 and the connecting portion 5 is completely released and the two are separated, the right beam 12A and the left beam 12B in the free state can freely rotate by a light load. . The gaps m and n generated here
Is a margin during operation, so that the intermediate beam 11 and the left
Even if a change occurs in the connection position between the beam 12A and the right beam 12B , as long as the change stays within the range of m and n, there is no risk of interfering with connection and release.

FIG. 1 shows that the left beam 12A and the right beam 12B are moved by the operation of the support cylinder 3 after the mutual connection is released through the procedure described above.
FIG. 10 is a front view showing a basic operation of eliminating the interference when the intermediate beam 11 is carried out together with the mold for changing the mold by rotating about the engagement points 21A and 21B with the fulcrum.

[0026]

According to the present invention, as described above, the intermediate beam 1 is used.
It is not necessary to add an extra large stroke of the transport driving devices 2A and 2B , which was conventionally required only for attaching and detaching the first beam 12 to and from the left beam 12A and the right beam 12B. Great saving effect. Further, in the case of the method of expanding and contracting the beam itself to avoid interference, it is no longer necessary to increase the cross-sectional area of the beam and increase the weight associated therewith.
Moreover, the connection between each beam and its release are efficient,
Since there is a great possibility that the time and labor for changing the mold can be reduced, the effect that has a positive effect on the overall productivity of the forging press cannot be overlooked.

According to the second aspect, the weights of the left beam 12A and the right beam 12B are once received by a receiver fixed at a position slightly higher than the tip of the support cylinder, and then the cylinders are operated to start the rotation operation. In addition, there is an effect of protecting the function of the support cylinder so as not to lose the impact at the time of weight conversion and to impair the function of the support cylinder. According to the third aspect, the connection and the release are smoothly and quickly performed by the mechanism assembled compactly. Since the connecting portion 5 of the left beam 12A and the right beam 12B protects the internal hydraulic cylinder 6 surrounded by the connecting outer cylinder 53 and the cylinder cap 62, the forging press is difficult to avoid operating conditions such as high heat, impact, and vibration. It is suitable as a device to be applied, and has the effect of maintaining a long service life. The fourth aspect of the present invention provides a forging press which operates under relatively severe operating conditions by absorbing some distortion, torsion, and other deformations of the members, since it forms a margin in the operation at the time of connection or release as described above. The effect of providing a large maintenance advantage corresponding to a slight deformation is remarkable.

[Brief description of the drawings]

FIG. 1 is a front view of a main part showing an embodiment of the present invention.

FIG. 2 is a front view of the entire transfer press.

3A and 3B are a front view (A) and a side view (B) of a left beam and right beam supporting portion which are part of the embodiment.

FIG. 4 is a longitudinal sectional front view (A) of a connecting portion of the embodiment, and X in FIG.
FIG. 7 is a perspective view (C) of the connecting portion 4 of the intermediate beam 11, as viewed from the arrow X (B).

FIG. 5 is a longitudinal sectional front view of (A) and (B) showing the operation of the embodiment.

6 (A) to 6 (D) each show many aspects of the prior art by partial front views.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Beam 2A Transport drive 2B Transport drive 3 Support cylinder 4 Connection part (intermediate beam) 5 Connection part (left beam, right beam) 6 Hydraulic cylinder 11 Intermediate beam 12A Left beam 12B Right beam 13 Notch 21 Engagement point 31 Receiving Tool 32 Receiving stand 33 Free roll 41 Square hollow part 42 Inner surface 43 Vertical groove 44 Side surface 51 Connecting rod 52 Rod head 61 Piston 62 Cylinder cap 63 Sleeve 64 Spring

Claims (4)

(57) [Claims] 1. A forging press comprising, on both left and right sides of a forging press, transport driving devices (2A, 2B) for driving a three-dimensional operation of two beams (1) traversed into upper and lower molds, wherein the beams (1) are made of metal. An intermediate beam (11) carried in and out together with the mold, a left beam (12A) engaged with the transport driving device (2A, 2B),
In a transfer press formed by detachably connecting the right beam (12B), the left beam (12A) and the right
A telescopic support cylinder (3) that converts the beam (12B) into an arc motion with the point of engagement (21) with the transport driving device (2A, 2B) as a fulcrum, and a connecting portion (4) of the intermediate beam (11). ), Left beam (12A), right beam (12B)
A beam connecting device for a transfer press, comprising: a hydraulic cylinder (6) that removably expands and contracts a connecting portion (5) at an end of the transfer press. 2. The press body according to claim 1, wherein a receiving stand (32) whose tip end (31) is located slightly above the end of the shortest supporting cylinder adjacent to the support cylinder (3) is fixed to the press body. A free roll (33) is rotatably supported at the tip of the support cylinder (3), and a left beam (12 ) is supported.
A) A beam connecting device for a transfer press, wherein a triangular groove-shaped notch (13) fitted with the free roll (33) is formed in the right beam (12B) . 3. The left beam (12A) according to claim 1,
One of the right beams (12B) is a guide sleeve (22) suspended from an engagement point (21A) with the transport driving device (2A).
It is rotatably supported via an engagement rod (14) slidably inserted in the inside, and the other is rotatably supported directly at an engagement point (21B) with the transport driving device (2B). left
Connection part (5) of beam (12A) and right beam (12B )
Comprises a connecting rod (51) fixed to a piston (61) that slides in a hydraulic cylinder (6) fitted therein, said connecting rod (51) being a connecting part (4) of the intermediate beam (11).
Is rotatably fitted through a vertical groove (43) cut into the inner surface (42) side into the rectangular hollow portion (41) forming the inner surface (42) and the inner surface (42) in the rectangular hollow portion (41). Inside surface (4
A beam connecting device for a transfer press, comprising a rod head (52) whose diameter is expanded and retractable between a side surface (44) and a side surface (44) opposed to 2). 4. A sleeve projecting slidably to the piston side of a cylinder cap (62) for slidably sealing the connecting rod (51) at the tip of the hydraulic cylinder (6) according to claim 1. (63) and the sleeve (6)
3. A beam connecting device for a transfer press, comprising a spring (64) for urging the piston toward the piston.