JPH1024335A - Device for driving transporting mechanism of transfer press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent inversion of transfer torque to the work transporting mechanism of a transfer press. SOLUTION: This device is so structured that rotational members are provided including gears 9, 11, 17-19, gear boxes 13, 14, 16, gears 34, 35, 43-45 and gear boxes 38, 40, 42; that a torque transfer loop is formed by means of a first and a second means 31, 32 for separately transferring the torque of a rotational driving source 1 to the cam shaft 3 of a work transporting mechanism 2; torque in the circumferential direction is generated, between the connecting shaft 67 of the input side near the rotational driving source and that of the output side near the cam shaft, by means of a torque imparting means 33 provided in the first torque transfer means 31; and brought constantly into planar contact with are the torque transfer surfaces of the mutually engaged gears constituting the gears 9, 11, 17-19, 34, 35, 43-45 and the gear boxes 13, 14, 16, 38, 40, 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a transfer mechanism driving device for a transfer press.

[0002]

2. Description of the Related Art Conventionally, as a means for processing a work (a member to be formed), a transfer press for sequentially transferring a work to a plurality of dies arranged linearly and performing press working for each dies has been used. I have.

FIGS. 7 and 8 show an example of a conventional transfer mechanism driving device for a transfer press. This driving device uses a rotary drive source 1 and the rotational force of the rotary drive source 1 to control the work transport mechanism 2. And a torque transmitting means 4 for transmitting to the camshaft 3.

The rotary drive source 1 includes a motor 30, a flywheel 5 disposed on the side of the motor 30, and a motor 3.
The flywheel 5 includes an endless belt 7 wound around both the pulley 6 and the flywheel 5 attached to the output shaft 0, and a pinion gear 8 fixed to a rotary shaft connected to the flywheel 5 by a clutch.

[0005] The rotational force transmitting means 4 includes an idler gear 9 meshing with a pinion gear 8 of the rotary drive source 1, a shaft 10 arranged on the side of the flywheel 5 in parallel with the workpiece transfer direction W, and A pinion gear 11 fixed to the base end of the gear 10 and meshing with the idler gear 9;
A shaft 12 disposed substantially vertically below the tip of the shaft 10; gear boxes 13 and 14 for transmitting the rotational force of the shaft 10 to the shaft 12; A shaft 15 that is disposed substantially horizontally so as to be orthogonal, a gear box 16 that transmits the rotational force of the shaft 12 to the shaft 15, a pinion gear 17 that is fixed to the tip of the shaft 15, and an input that meshes with the pinion gear 17. A side gear 18 and an output side gear 19 that rotates integrally with the input side gear 18 and meshes with a camshaft drive gear 20 fixed to the camshaft 3. A rotational force of 30 is transmitted to the camshaft 3.

The work transfer mechanism 2 is provided with the camshaft 3 described above.
A cam 22 fixed to the cam shaft 3, an arm support shaft 23 arranged in parallel with the cam shaft 3, and an arm support shaft 2
Arm 3 having an intermediate portion attached to arm 3 and arm 2
A cam follower 25 pivotally supported at the base end of the cam 4 and capable of rolling around the periphery of the cam 22; and a feeder extending substantially horizontally in the work conveyance direction W and having the base end pivotally supported by the distal end of the arm 24. When the cam 22 rotates together with the camshaft 3, the cam follower 25 rolls around the periphery of the cam 22, whereby the arm 24 swings about the arm support shaft 23, and the feed bar Reference numeral 26 reciprocates between the upstream side and the downstream side in the workpiece transfer direction W.

A predetermined portion of the arm 24 is connected to a fixed structure 71 such as a frame of a transfer press via an air cylinder 72. The arm 24 is urged by the air cylinder 72, and the periphery of the cam 22 is The cam follower 25 is always in contact with the portion.

A plurality of suction devices as work holding means are attached to the feed bar 26. Press work is performed by holding the work by the suction device and interlocking with the reciprocating motion of the feed bar 26 described above. Are sequentially transferred to a plurality of dies arranged linearly.

Further, near the motor 30, a base end of a shaft 28 constituting the mold elevating mechanism 27 is located.

An input gear 29 is fixed to the base end of the shaft 28. The input gear 29 is fixed to a rotary shaft connected to the flywheel 5 of the torque transmitting means 4 by a clutch. When the rotational force of the motor 30 is transmitted to the shaft 28, another component (not shown) of the mold elevating mechanism 27 interlocking with the shaft 28 is moved to the upper mold. Is raised and lowered with respect to the lower mold.

[0011]

However, in the transfer mechanism driving device of the transfer press shown in FIGS. 7 and 8,
Arm 2 from feed bar 26 and air cylinder 72
4. Since the urging force acting on the camshaft 3 via the cam follower 25 and the cam 22 and the force required for accelerating and decelerating the device change with the rotation of the cam 22, transmission to the work transport mechanism 2 is performed as shown in FIG. The torque T undergoes periodic fluctuations including positive and negative inversions.

On the other hand, the rotational drive source 1, the rotational force transmitting means 4,
The pinion gear 8, idler gear 9, pinion gear 11, which are mechanical elements of the meshing system that constitute the work transfer mechanism 2,
In the gears 13, 14, 14, 16, the pinion gear 17, the input gear 18, the output gear 19, and the camshaft drive gear 20, between the rotational force transmitting surfaces of the two mechanical elements meshing with each other. However, there is a backlash which is a gap in the rotation direction of the machine element, and when the transmission torque T is reversed, the movement of the driven side is shifted from the movement of the driving side due to the backlash. Causes vibration in the system.

Therefore, in order to improve the productivity of the transfer press, it is necessary to simply increase the number of rotations of the motor 30 of the rotary drive source 1 to increase the work transfer speed. Vibration due to the above occurs on the feed bar 26 of the work transfer mechanism 2, and the work falls off from the suction device attached to the feed bar 26, or it becomes difficult to hold the work by the suction device.

The present invention has been made in view of the above circumstances, and has as its object to provide a transfer mechanism driving device for a transfer press capable of suppressing the reversal of the transmission torque to the work transfer mechanism.

[0015]

According to a first aspect of the present invention, there is provided a transfer mechanism driving device for a transfer press, comprising a rotating member including a mechanical element of a meshing type, and a rotary drive. A rotational force transmission loop is formed by two sets of rotational force transmitting means for separately transmitting the rotational force of the source to the cam shaft of the work transfer mechanism. Torsional force applying means for generating a torsional force in the circumferential direction of the rotating member between the rotating member located closer to the rotary drive source and the rotating member located closer to the cam shaft is provided.

In the transfer mechanism driving device for a transfer press according to a second aspect of the present invention, the torsion force applying means in the transfer mechanism driving device for a transfer press according to the first aspect of the present invention is provided on the gear holder. An input bevel gear and an output bevel gear pivotally supported so as to face each other, an idle bevel gear pivotally supported by a gear holder so as to mesh with the input bevel gear and the output bevel gear, and an input bevel gear and an output bevel gear. A torsion driving means for rotating the gear holder, the torsion force applying means is interposed at a required position of at least one of the rotational force transmitting means, and is located closer to the rotational driving source than a required position of the one rotational force transmitting means. To the input side bevel gear of the torsional force applying means, and The rotary member positioned on the camshaft nearer location, linked to the output side bevel gear of the torsional force applying means.

Further, in the transfer mechanism driving device for a transfer press according to a third aspect of the present invention, the torsion force applying means in the transfer mechanism driving device for a transfer press according to the first aspect of the present invention is provided on the input side. Helical gear,
An output helical gear meshing with the input helical gear; and gear displacing means for displacing the input helical gear relative to the output helical gear in the axial direction, wherein the torsional force applying means includes at least one rotational force. A rotating member interposed at a required portion of the transmitting means, and a rotating member located closer to the rotational drive source than a required portion of the one rotating force transmitting means is connected to the input side helical gear of the torsional force applying means, and The rotating member located closer to the cam shaft than the required portion is connected to the output side helical gear of the torsional force applying means.

In any one of the transfer mechanism driving devices for a transfer press according to any one of the first to third aspects of the present invention, the camshaft is located at a position higher than a required position of a rotational force transmission loop formed by two sets of rotational force transmitting means. A torsional force is generated by the torsional force applying means between the rotating member located closer to the rotating drive source and the rotating member located closer to the rotary drive source, and the rotation of the meshing mechanical elements of the respective rotating force transmitting means in meshing with each other. The force transmission surface is always in surface contact to prevent the transmission torque to the work transfer mechanism from reversing.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show an embodiment of a transfer mechanism driving device of a transfer press according to the present invention. In the drawings, the same reference numerals as those in FIGS. 7 and 8 denote the same parts. Is represented.

The transfer mechanism driving device of the transfer press shown in FIGS. 1 to 3 comprises a first torque transmitting means 3 for transmitting the torque of the rotary drive source 1 to the cam shaft 3 of the work transport mechanism 2.
1, a second rotational force transmitting means 32 for transmitting the rotational force of the rotary drive source 1 to the cam shaft 3 of the work transfer mechanism 2 separately from the first rotational force transmitting means 31, and the first rotation The torsion force applying means 33 is incorporated in the force transmitting means 31.

The first rotational force transmitting means 31 is obtained by adding a torsional force applying means 33 described later to the portion of the shaft 12 (see FIG. 7) in the rotational force transmitting means 4 described above.

The second rotational force transmitting means 32 includes an idler gear 34 that meshes with the input gear 29 of the mold elevating mechanism 27 and is interlocked with the pinion gear 8 of the rotary drive source 1 via the input gear 29; A pinion gear 35 meshed with the shaft 34; a shaft 36 arranged on the side of the motor 30 in parallel with the workpiece transfer direction W;
6, a coupling 37 and a gear box 38 for transmitting the rotational force of the pinion gear 35, a shaft 39 disposed substantially vertically below the tip of the shaft 36, and a gear for transmitting the rotational force of the shaft 36 to the shaft 39. A box 40 and a shaft 41 disposed substantially horizontally below the shaft 39 so as to be orthogonal to the workpiece transfer direction W.
A gear box 42 for transmitting the rotational force of the shaft 39 to the shaft 41, a pinion gear 43 fixed to the tip of the shaft 41, an input gear 44 meshing with the pinion gear 43, and an integral part of the input gear 44. And an output gear 45 that is rotatably rotated and meshes with the camshaft drive gear 20 fixed to the camshaft 3.
The torque of the motor 30 is transmitted to the camshaft 3 separately from the first torque transmission means 31.

That is, in the transfer mechanism driving device of the transfer press shown in FIGS. 1 to 3, the first force for transmitting the torque of the rotary drive source 1 to the cam shaft 3 of the work transfer mechanism 2 separately.
The torque transmitting means 31 and the second torque transmitting means 32 form a torque transmitting loop.

The torsional force applying means 33 includes a casing body 46 having an open top and bottom, an upper cover 47 fitted and fixed to the upper end of the casing body 46, and a lower cover 48 fitted and fixed to the lower end of the casing body 46. A gear holder 51 provided inside the casing body 46 and supported by the upper lid 47 and the lower lid 48 via bushes 49 and 50 so as to be rotatable in the circumferential direction around a vertical axis, and pivotally supported by the gear holder 51. Input bevel gear 52, output bevel gear 5
Three and two idler bevel gears 54 and 55, a worm wheel 56 which is provided inside the casing body 46 and is externally fixed to the gear holder 51, and a casing body 46
A worm screw 57 which is provided inside the casing and meshes with the worm wheel 56, and a motor 5 which is provided outside the casing body 46 and rotates the worm screw 57
8, an input-side connecting shaft 67 that penetrates the upper lid 47 and rotates integrally with the input-side bevel gear 52, and a lower lid 4
8 and an output-side connecting shaft 68 that rotates integrally with the output-side bevel gear 53.

The input bevel gear 52 is supported above the inside of the gear holder 51 via a bearing 59 and a bearing cylinder 60 so that the gear body faces downward.

The output side bevel gear 53 is connected to the gear body of the input side bevel gear 52 with the gear body facing upward by a gear holder 51 via a bearing 61 and a bearing tube 62.
It is supported below the inside.

The idler bevel gear 54 has a bearing 63 and a bearing cylinder 64 such that the gear body meshes with both the input-side bevel gear 52 and the output-side bevel gear 53.
And is supported on one side inside the gear holder 51.

The other idler bevel gear 55 has a bearing 65 and a bearing cylinder 66 so that the gear body meshes with both the input bevel gear 52 and the output bevel gear 53.
And is supported by the other side inside the gear holder 51.

The casing body 46 is mounted on a fixed structure such as a transfer press frame.

That is, in the torsional force applying means 33, the input side bevel gear 5 pivotally supported by the gear holder 51 is provided.
2. An output-side bevel gear 53 and two idler bevel gears 54 and 55 form a differential.

Therefore, the rotational force of the motor 58 is reduced in a state where both the input side connecting shaft 67 and the output side connecting shaft 68 of the torsional force applying means 33 are completely free without being connected to other members. Screw 57 and worm wheel 5
6 to the gear holder 51, and the gear holder 51
Is rotated in the direction of arrow A (counterclockwise as viewed from above), the two idler bevel gears 54 and 55 do not rotate, and the output side connecting shaft 68 moves in the direction of arrow A at the same speed as the input side connecting shaft 67. Will rotate.

On the contrary, the input side connecting shaft 67 has an arrow A
When the rotation of the gear holder 51 is restrained when rotating in the direction, one idler bevel gear 54 rotates in the direction of arrow B, and the other idler bevel gear 55 rotates in the direction of arrow C, and the output side connection shaft 68 Input side connecting shaft 67
It rotates in the direction of arrow D (clockwise when viewed from above) at the same rotational speed as.

Further, the input side connecting shaft 67 described above is rotated integrally with the output side bevel gear of the gear box 14, and the output side connecting shaft 68 is connected to the gear box 16.
, And rotates integrally with the input side bevel gear.

The cam shaft 3 of the work transfer mechanism 2 is driven by the transfer mechanism drive device of the transfer press shown in FIGS.
Is rotated, the motor 58 of the torsional force applying means 33 is rotated.
, A torsional force is generated between the input side connection shaft 67 and the output side connection shaft 68, and the motor 30 of the rotary drive source 1 is operated.

The rotational force of the motor 30 of the rotary drive source 1 is transmitted to the camshaft 3 via the flywheel 5, the pinion gear 8, and the first rotational force transmitting means 31, and the pinion gear 8, the mold elevating mechanism The torque is transmitted to the camshaft 3 via the input gear 27 of the second gear 27 and the second torque transmitting means 32.

The rotational force of the motor 58 of the torsional force applying means 33 is transmitted to the gear holder 51 via the worm screw 57 and the worm wheel 56, and the gear holder 51 rotates in the same direction as the input side connecting shaft 67. The input side connecting shaft 67 and the output side connecting shaft 68 rotate in the same direction.

At this time, the input connection shaft 67 and the output connection shaft 6 are adjusted by appropriately adjusting the rotational force of the motor 58.
8, the output side connecting shaft 6 with respect to the input side connecting shaft 67.
8 generates a torsional force in the direction in which the rotation proceeds, or generates a torsional force in a direction in which the rotation of the output-side connecting shaft 68 with respect to the input-side connecting shaft 67 is delayed.

The magnitude of the torsional force can be determined from the value of the current supplied to the motor 58.

After a torsional force is generated between the input side connecting shaft 67 and the output side connecting shaft 68 of the torsional force applying means 33, the rotating shaft of the motor 58 is restrained by the brake and power is consumed. Instead, a state where a torsional force is generated between the two connecting shafts 67 and 68 is maintained.

For example, between the input side connecting shaft 67 and the output side connecting shaft 68, as shown in FIG.
Assuming that a torsional force is generated in a direction in which the rotation of the output-side connecting shaft 68 is delayed with respect to the first rotational force transmitting unit 31 and the second rotational force transmitting device 31 in the transfer mechanism driving device of the transfer press shown in FIGS. Since the torque transmitting loop is formed by the torque transmitting means 32 and the first torque transmitting means 31 located closer to the cam shaft than the torsional force applying means 33 due to the torsional force described above, the meshing method is employed. The gear and the pinion gear 1 housed in the gear box 16 which is a mechanical element of
7, the input side gear 18 and the output side gear 19 are constantly urged in the direction in which the rotation is delayed, and the gear, the pinion gear 17, the input side gear 18 and the output side gear 1 housed in the gear box 16
9 and the camshaft drive gear 20 fixed to the camshaft 3
Although the urging force acting on the camshaft 3 by the air cylinder 72 (see FIG. 8) and the force required for accelerating and decelerating the device change with the rotation of the cam 22, the rotational force transmitting surfaces are always in contact with each other, although they mesh with each other. Held in state.

The input side connecting shaft 67 and the output side connecting shaft 6
8, the second torque transmitting means 32
Output side gear 45, input side gear 44, pinion gear 43, gear boxes 42, 40,
32, the pinion gear 35, the idler gear 34, the input side gear 29 of the mold elevating mechanism 27, and the pinion gear 8 of the rotary drive source 1 are constantly urged in the direction in which the rotation proceeds, and the output side gear 45, the input side. Gear 44, pinion gear 4
3, gears installed in the gear boxes 42, 40, 32,
Pinion gear 35, idler gear 34, mold elevating mechanism 2
7, the input gear 29, the pinion gear 8 of the rotary drive source 1
Although the biasing force acting on the camshaft 3 by the air cylinder 72 (see FIG. 8) and the force required for accelerating and decelerating the device change with the rotation of the cam 22, the rotational force transmitting surfaces are always in contact with each other. It is kept in contact.

Further, the input side connecting shaft 67 and the output side connecting shaft 6
8, the first torque transmitting means 31 located closer to the rotational drive source than the torsional force applying means 33.
The gears contained in the idler gear 9, the pinion gear 11, and the gear boxes 13 and 14, which are the mechanical elements of the meshing system, are constantly urged in the direction in which the rotation proceeds.
The gears housed in the pinion gear 11 and the gear boxes 13 and 14 are provided with a cam 2 that has a biasing force acting on the camshaft 3 and a force required for accelerating and decelerating the device by the air cylinder 72 (see FIG. 8).
Even if it changes with the rotation of 2, the rotational force transmitting surfaces are always kept in surface contact with each other, though they mesh with each other.

Accordingly, as shown in FIG. 4, the transmission torque T to the work transfer mechanism 2 has a periodic fluctuation with a peak value of T1 + α, and as shown in FIG. The transmission torque T has a periodic fluctuation with a peak value of T1 + α. However, in the transfer mechanism driving device of the transfer press shown in FIGS. Since the rotational force transmitting means 32 and the second rotational force transmitting means 32 form a rotational force transmitting loop, and the rotational force transmitting surfaces of the meshing mechanical elements in the rotational force transmitting loop are always in surface contact with each other by the torsional force, the work is The transmission torque T to the transport mechanism 2 does not reverse, and the amplitude of the transmission torque T is about half the torque required by the camshaft 3.

Accordingly, in the transfer mechanism driving device of the transfer press shown in FIGS. 1 to 3, even if the rotation speed of the motor 30 of the rotary drive source 1 is set to be high and the work transfer speed is increased, the transfer torque is not increased. Vibration due to the reversal of T does not occur on the feed bar 26 of the work transport mechanism 2, so that the work does not fall out of the suction device attached to the feed bar 26, and the work is held by the suction device. It is not difficult, and the productivity of the transfer press can be improved.

Further, instead of the torsional force applying means 33 shown in FIG. 2, a torsional force applying means 81 shown in FIG. 6 can be applied.

The torsional force applying means 81 includes an input helical gear 82 which rotates integrally with the input side connecting shaft 67 by a spline structure or the like, and meshes with the input side helical gear 82 and is fixed to the output side connecting shaft 68. An output-side helical gear 83 and an air cylinder 85 that displaces the input-side helical gear 82 in the axial direction by pressing one side surface of the input-side helical gear 82 via a thrust bearing 84. 82 in the axial direction, so that the input side helical gear 82
And an output side helical gear 83 to generate a torsional force.

The transfer mechanism driving device of the transfer press according to the present invention is not limited to the above-described embodiment. For example, a transfer structure driving device having a shaft structure having a flange fastening portion in the torsion force applying means is applied. The present invention is applied to a transfer press having a two-dimensional feed and a three-dimensional feed work transfer mechanism, wherein a phase of a flange fastening portion is set at the time of assembly so that a torsional force can always be generated between both shaft ends. It goes without saying that the present invention can be applied, the installation location of the present invention can be changed to an airplane on the floor, and other various changes can be made without departing from the gist of the present invention.

[0049]

As described above, any of the transfer mechanism driving devices of the transfer press according to the first to third aspects of the present invention can exhibit the following various excellent effects.

(1) A torsion is caused between a rotating member located closer to a cam shaft and a rotating member located closer to a rotation driving source than a required portion of a rotating force transmission loop formed by two sets of rotating force transmitting means. Since the torsional force generated by the force applying means is generated and the rotational force transmitting surfaces of the meshing mechanical elements of the rotational force transmitting means are always in contact with each other, the torque transmitted to the work transfer mechanism is prevented from being reversed. be able to.

(2) Since the transmission torque to the work transfer mechanism does not reverse, even if the work transfer speed is increased, no vibration occurs in the work transfer mechanism, and the productivity of the transfer press can be improved. become.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an embodiment of a transfer mechanism driving device of a transfer press according to the present invention.

FIG. 2 is a sectional view showing details of a torsional force applying means in FIG. 1;

FIG. 3 is a conceptual diagram of a torque transmitting loop formed by a first torque transmitting means, a second torque transmitting means, and a torsional force applying means in FIG. 1;

FIG. 4 is a graph showing a transmission torque of a portion of the first rotational force transmitting unit in FIG. 1 that is located closer to the cam shaft than the torsional force applying unit.

FIG. 5 is a graph showing a transmitted torque of a portion of the first rotational force transmitting means in FIG. 1 which is located closer to the rotational drive source than the torsional force applying means.

FIG. 6 is a conceptual diagram showing another example of the torsional force transmitting means.

FIG. 7 is a perspective view showing an example of a conventional transfer mechanism driving device for a transfer press.

FIG. 8 is a conceptual diagram showing a relationship among an arm, a cam follower, and a cam in FIG.

FIG. 9 is a graph showing a transmission torque of a rotational force transmission unit in FIG. 7;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Rotation drive source 2 Work transfer mechanism 3 Cam shaft 9 Idler gear (mechanical element of meshing type) 11 Pinion gear (mechanical element of meshing type) 13 Gear box (mechanical element of meshing type) 14 Gear box (mechanical element of meshing type) 16 Gear box (mechanical element of meshing type) 17 Pinion gear (mechanical element of meshing type) 18 Input side gear (mechanical element of meshing type) 19 Output side gear (mechanical element of meshing type) 31 First torque transmitting means 32 No. 2 rotational force transmitting means 33 Torsional force applying means 34 Idler gear (mesh-type mechanical element) 35 Pinion gear (mesh-type mechanical element) 38 Gear box (mesh-type mechanical element) 40 Gear box (mesh-type mechanical element) 42 Gear box (mechanical element of meshing system) 43 Pinion gear (mechanical element of meshing system) 44 Input side Gear (mechanical element of meshing system) 45 output side gear (mechanical element of meshing system) 51 gear holder 52 input bevel gear 53 output bevel gear 54 idler bevel gear 55 idler bevel gear 56 worm wheel (holder rotation drive source) 57 worm screw (holder rotation) (Drive source) 58 motor (holder rotation drive source) 67 input side connection shaft (rotation member located near the rotation drive source) 68 output side connection shaft (rotation member located near the cam shaft) 81 torsion force applying means 82 input side Helical gear 83 Output helical gear 85 Air cylinder (gear displacement means)

Continuing on the front page (72) Inventor Takao Iura 1st Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Ishikawashima-Harima Heavy Industries, Ltd. Inside the Yokohama Engineering Center (72) Inventor Takuma Fujiin Shinka, Isogo-ku, Yokohama-shi, Kanagawa No. 1 Haramachi Ishi Kawashima Harima Heavy Industries Co., Ltd. Yokohama Engineering Center (72) Inventor Eiichi Yoshii No. 1 Shinnakaharacho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Ishi Kawashima Harima Heavy Industries Co., Ltd. Yokohama Engineering Center

Claims (3)

[Claims] A rotating force transmitting loop is provided by two sets of rotating force transmitting means having a rotating member including a mechanical element of a meshing type and transmitting a rotating force of a rotary drive source to a cam shaft of a work transfer mechanism separately. And a torsional force in the circumferential direction of the rotating member between a rotating member located closer to the rotational drive source and a rotating member located closer to the cam shaft than the predetermined location at a required portion of at least one of the rotating force transmitting means. A transfer mechanism driving device for a transfer press, comprising a torsional force applying means for generating a force. 2. An input bevel gear and an output bevel gear pivotally supported so as to face the gear holder, an idle bevel gear pivotally supported by the gear holder so as to mesh with the input bevel gear and the output bevel gear, and an input bevel gear. And a holder rotation drive source for rotating the gear holder about the output side bevel gear, and the torsion force applying means is interposed at a required portion of at least one of the rotating force transmitting means, and one of the rotating force transmitting means is provided. The rotating member located closer to the rotary drive source than the required portion of the means is connected to the input side bevel gear of the torsional force applying means, and the rotating member located closer to the cam shaft than the required portion of one of the rotating force transmitting means, 2. The transfer mechanism driving device for a transfer press according to claim 1, wherein the transfer mechanism driving device is connected to an output bevel gear of the torsional force applying means. 3. A torsional force applying means comprising: an input helical gear; an output helical gear meshing with the input helical gear; and gear displacing means for displacing the input helical gear relative to the output helical gear in the axial direction. Means, the torsional force applying means is interposed at a required portion of at least one of the rotational force transmitting means, a rotating member located closer to the rotation drive source than the required portion of the one rotational force transmitting means,
2. A rotating member, which is connected to the input side helical gear of the torsional force applying means and is located closer to the cam shaft than a required portion of one of the rotational force transmitting means, is connected to the output side helical gear of the torsional force applying means. Transfer mechanism driving device for transfer press.