JPH06170590A - Double action press device - Google Patents

Abstract

PURPOSE:To enable the timing adjustment of a main ram and a slave ram by adjusting the phase between a main crank shaft and a slave ram shaft by turning the drive shaft of the slave ram when a clamping key is loosened. CONSTITUTION:This device is a crank type double action press device whose constitution is as follows: A slave ram drive shaft 3 is arranged in parallel in the upper part of the main crank shaft 2 which is connected to a rotary driving mechanism and a gear 4 which is fixed in the end part of the main crank shaft 2 is engaged with a gear 6 which is freely attachably/detachably and pivotally attached to the end part of the slave ram drive shaft 3 with the clamping key 5 by the same number of teeth. And, the slave ram shaft 8 which is arranged orthogonally to the main crank shaft 2 in the upper part between a pair of main ram connecting rods 7, 7 which are connected to the main crank shaft 2 at intervals by a prescribed eccentricity is connected to the slave ram drive shaft 3 mutually through bevel gears 9a, 9b and slave ram connecting rods 10, 10 are respectively connected to both the outside ends of the slave ram shaft 8 by a prescribed eccentricity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-acting press device having a main ram and a slave ram, in which the vertical movement timing of the main ram and the slave ram can be adjusted as required.

[0002]

2. Description of the Related Art Conventionally, in a crank type double-acting press device having a main ram and a slave ram, the main ram rod and the slave ram rod are connected to each other based on a preset eccentric amount with respect to the same crank shaft, As a result, the timings of the main ram and the sub ram were changed so that they could move up and down.

Therefore, in such a conventional double-acting press device, the vertical movement timing of the main ram and the slave ram is preset by the difference in the amount of eccentricity between them. It was considered impossible to adjust the timing due to the structure of the device.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and adjusts the vertical movement timing of the main ram and the sub ram of the crank type double-acting press device as needed. It is an object of the present invention to provide a double-acting press device having a configuration capable of performing the above.

[0005]

In order to solve the above-mentioned problems, in the double-acting press device of the present invention, the secondary ram drive shaft 3 is arranged in parallel above the main crank shaft 2 connected to the rotary drive mechanism. A gear 4 fixedly mounted on the end of the main crank shaft 2 and a gear 6 detachably mounted on the end of the slave ram drive shaft 3 via a tightening key 5 are meshed with the same number of teeth. , A slave ram shaft 8 disposed orthogonally to the main crank shaft 2 above a pair of main ram connecting rods 7 connected to the main crank shaft 2 with a predetermined eccentricity, and the slave ram drive. The shaft 3 is connected to each other via bevel gears 9a and 9b.
Is connected with a predetermined eccentric amount, and when the tightening key 5 is loosened, the sub-ram drive shaft 3 is rotated to adjust the phases of the main crank shaft 2 and the sub-ram shaft 8. It has a configuration that enables the timing adjustment between the sub-ram and the sub-ram.

[0006]

In the above structure, the secondary ram shaft 8 is orthogonal to the upper side of the main crankshaft 2, and the secondary ram connecting rods 10 and 1 are located at the central target position with respect to the axial direction of the main crankshaft 2.
0 will be allocated.

When the tightening key 5 of the slave ram drive shaft 3 is loosened, the gear 6 and the slave ram drive shaft 3 are freed and the slave ram drive shaft 3 is rotationally adjusted to drive the gear 6 and the slave ram drive. The fitting position with the shaft 3 can be changed, whereby the fitting state between the gear 6 of the secondary ram drive shaft 3 and the gear 4 of the main crank shaft 2 is adjusted and changed to change the main crank shaft 2 and the secondary ram shaft 8. The rotation phase of and can be adjusted.

Next, when the tightening key 5 is tightened to fix the secondary ram drive shaft 3 and the gear 6, the gear 6
And the gear 4 of the main crankshaft 2 mesh with each other, the sub-ram drive shaft 3 rotates by the rotational drive of the main crankshaft 2, and the sub-ram shaft 8 rotates via the bevel gears 9a and 9b. The vertical movement timing of the main ram and the sub ram can be adjusted with a predetermined phase shift.

[0009]

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

FIG. 1 is a front view of the crank portion of the device of the present invention. 2 is a right side view of FIG. FIG. 3 shows a height adjusting mechanism of the main ram of the device of the present invention. Fig. 4 (a) is a layout view of the height adjusting mechanism of the main ram, Fig. 4 (b) is a right side view of Fig. 4 (c), and Fig. 4 (c) is a front view of Fig. 4 (a). Is. In FIG. 1, bearings 13, 13, 13 arranged above the frame 1
The main crankshaft 2 is rotatably installed via the shaft, and the main ram connecting rods 7, 7 of the main crankshaft 2 are rotated with a predetermined eccentricity between the bearings 13, 13 with respect to the main crankshaft 2 between the bearings. Mount freely. That is, the main crankshaft 2 is attached to the rotary drive mechanism composed of a motor, a flywheel, etc. (not shown).
The main ram connecting rod 7 and the main ram connecting rod 7 are connected to each other by taking a predetermined eccentricity C1 between the center of the rotating shaft of the main crank shaft 2 and the center of the rotating shaft of the main ram connecting rods 7, 7.
Convert to 7 up and down movement.

On the other hand, a sub-ram drive shaft 3 is arranged above the main crank shaft 2 in parallel with the main crank shaft 2 via bearings 15 and 15 on the frame 1, and the outside of the sub-ram drive shaft 3 is arranged. A gear 6 is removably pivoted at an end (on the right side in FIG. 2) via a tightening key 5. That is, the gear 6 is rotatably attached to the outer end of the secondary ram drive shaft 3, and the tightening key 5
The gear 6 and the sub-ram drive shaft 3 are free in the state where the gear 6 is loosened, and the fitting position of the gear 6 and the sub-ram drive shaft 3 can be changed. It is fixed to the secondary ram drive shaft 3.

A sprocket 1 is provided on both ends of the main crankshaft 2.
The gears 4 and 14 are fixed to each other, and the gear 4 is fixed to the inside of the sprocket 14 on the right side, and the gear 4 and the gear 6 of the slave ram drive shaft 3 are meshed with each other. Both gears 4 and 6 are formed with the same number of teeth, and the sub-ram drive shaft 3 rotates synchronously in response to the rotational drive of the main crankshaft 2. It should be noted that each sprocket 14, 14 is connected to a roll feed (not shown) via a chain.

Further, the secondary ram drive shaft 3 has a bevel gear 9a fixedly mounted on the upper end portion between the main ram connecting rods 7,
It meshes with a bevel gear 9b fixed to a secondary ram shaft 8 arranged orthogonally to the main crank shaft 2, and the main crank shaft 2 is driven to rotate with the tightening key 5 tightened. Is transmitted to the secondary ram shaft 8 via.

In FIG. 1, reference numeral 18 is a counter balancer provided on the left and right outer peripheries of the main crankshaft 2.

Next, referring to FIG. 2, the slave ram shaft 8 is mounted on the frame 1 via bearings 16 and 16, and the slave ram connecting rods 10 and 10 are mounted on the outer ends of both of them via crank pins 17 and 17, respectively. Connect with a predetermined eccentricity C2.

With the above structure, the auxiliary ram shaft 8 is orthogonal to the upper side of the main crankshaft 2, and the auxiliary ram connecting rods 10 and 10 are arranged in the target position in the axial direction of the main crankshaft 2. When the tightening key 5 of the ram drive shaft 3 is loosened, the slave ram drive shaft 3 is rotated to change the fitting position between the slave ram drive shaft 3 and the gear 6, and thereby the main crank shaft 2 and the slave ram. The phase with the shaft 8 can be adjusted, and the vertical movement timing of the main ram (main ram slide plate 27) and the slave ram 72 can be adjusted.

Next, the height adjusting mechanism of the main ram will be described. In FIG. 1, the main ram connecting rods 7 and 7 described above are provided.
The main ram rods 36, 36 are connected to each of these via joint pins 23, 23. As shown in FIG. 3, a sawtooth screw 24 having a sloping surface of a screw thread on the lower side and a horizontal surface on the upper side is provided in the lower portion of the main ram rod 36, and a lower end of the saw tooth screw 24 is passed through a cylindrical portion 25 below the main ram rod fixing nut. The main ram rod tightening screw 37 is fitted to the outer periphery of the cylindrical portion 25 of the main ram rod 36.

Then, a worm wheel 30 having an inner screw meshing with the sawtooth screw 24 is fitted to the outer periphery of the sawtooth screw 24, and a spline nut 31 is fixed to the lower edge of the worm wheel 30 to fasten the main ram rod. Screw 37
While engaging with the spline portion 26 formed above
Main ram adjustment housing 2 on the outer circumference of the worm wheel 30
9 is fitted. A cover flange 32 is fixed to the upper end of the housing 29, and the lower end of the housing 29 is fixed to the main ram slide plate 27.

However, a tightening nut 38 that abuts the upper edge of the inner cavity 29a provided in the lower portion of the housing 29 is meshed with the outer periphery of the lower portion of the main ram rod tightening screw 37, and the pinion 38a is provided on the outer periphery of this tightening nut 38. And a rack 40 that engages with the pinion 38a is fitted into the housing 29. In addition, the lower edge of the tightening nut 38 has a spacer ring 4
The main ram slide plate 27 is supported via 1. Such a rack 40 is provided for each of the left and right main ram rods 36 as shown in FIG. 4, and the handle 40 is provided at the outer end of the rack 40.
By attaching a and operating the handle, the tightening nut 38 is rotated through the rotation of the rack 40.

Further, an adjusting screw 30a which fits the worm 33 and engages with the worm 33 is provided on the worm wheel 30 side at the sliding contact portion of the housing 29 with respect to the worm wheel 30. However, as shown in FIG. 4, the worm 33 is provided on each of the left and right main ram rods 36, 36 and is connected to the connecting shaft 35 via the flange joint 35a, and the bevel gears 83, 84 are connected to the right worm 33. Drive shaft 8
2 is projected and the left and right worms 33, 33 are simultaneously rotated by the rotation operation of the drive shaft 82.

Reference numeral 80 denotes a bracket that houses the bevel gears 83 and 84. A die height counter 85 is connected near the worm 33 on the left side via a belt 85a, and the height of the main ram (main ram slide plate 27) is increased. Measurement.

With such a structure, when the worm 33 is rotated with both racks 40 loosened by operating the left and right handles 40a, the worm wheel 30 rotates and the left and right mesh teeth 24 mesh with each other. Main ram rod 36
Can be moved up or down at the same time to adjust the height of the main ram slide plate 27 in a balanced manner. After this height adjustment, when both racks 40 are tightened by operating the left and right handles 40a, the main ram rod 36 rises and presses the meshing of the sawtooth screw 24 with the worm wheel 30 to perform firm tightening. it can.

Next, the height adjusting mechanism of the secondary ram will be described. In FIG. 2, as described above, the main crankshaft 2
Balls 60 are provided at the lower ends of the secondary ram connecting rods 10 and 10 disposed at the target positions in the axial direction of the ball. The balls 60 are stored in a ball receiver 63 provided at the upper end of the secondary ram adjusting screw 62. The secondary ram adjusting screw 62 is fixed to the upper edge of the secondary ram adjusting screw 62 by the flange 65, and the lower end of the secondary ram adjusting screw 62 is engaged with the secondary ram post 73. Secure the ram 72.

A secondary ram adjusting worm 67 is provided on the outer periphery of the lower end of the secondary ram adjusting screw 62. The secondary ram adjusting worm 67 is provided for the left and right secondary ram adjusting screws 62, and the shaft portions 70 of the left and right secondary ram adjusting worms 67 are connected by a flange joint 71. Then, the secondary ram adjusting worm 67 is engaged with the adjusting screw 69 provided on the outer periphery of the lower portion of the secondary ram adjusting screw 62, and the height of the secondary ram 72 is adjusted by rotating the adjusting worm 67.

In FIG. 2, reference numeral 66 is a secondary ram adjustment worm box, and 68 is a secondary ram adjustment worm 67.
It is a retainer for the bearing fitted to the outer periphery of the. Also, 80
Are balancer bolts that connect the upper end of the frame 1 and the main ram slide plate 27, and are arranged on four sides of the main ram slide plate 27.

[0026]

As described above, the auxiliary ram shaft 8 is orthogonal to the main crank shaft 2 in which the main ram connecting rods 7, 7 are provided on the left and right, and the auxiliary ram shaft 8 is orthogonal to the axial direction of the main crank shaft 2. The ram connecting rods 10, 10 are arranged according to the intermediate target position.

When the tightening key 5 of the secondary ram drive shaft 3 is loosened, the gear 6 and the secondary ram drive shaft 3 are set in a free state, and the secondary ram drive shaft 3 is rotationally adjusted, whereby the gear 6 and the sub-ram drive shaft 3 can be changed in fitting position, whereby the fitting state of the gear 6 of the sub-ram drive shaft 3 and the gear 4 of the main crank shaft 2 can be adjusted and changed to change the main crank shaft 2 It is possible to adjust the rotational phase of the sub-ram shaft 8 and the sub-ram shaft 8.

When the tightening key 5 is tightened to fix the secondary ram drive shaft 3 and the gear 6 to each other, the gear 6
And the gear 4 of the main crankshaft 2 mesh with each other, the sub-ram drive shaft 3 rotates by the rotational drive of the main crankshaft 2, and the sub-ram shaft 8 rotates via the bevel gears 9a and 9b. The vertical movement timing of the main ram and the sub ram can be adjusted with a predetermined phase shift.

Therefore, the vertical movement timing of the main ram and the slave ram, which cannot be achieved by the conventional double-acting press machine, can be adjusted as needed even after the completion of the machine, which is extremely convenient. A new double-action press machine is obtained.

[Brief description of drawings]

FIG. 1 is a front view of a crankshaft portion of a device of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a height adjusting mechanism of a main ram of the device of the present invention.

4 (a) is a layout view of a height adjusting mechanism of the main ram, FIG. 4 (b) is a right side view of FIG. 4 (c), and FIG. 4 (c) is FIG.
It is a front view of (a).

[Explanation of sign]

2 ... Main crankshaft, 3 ... Secondary ram drive shaft, 4 ... Main crankshaft gear, 5 ... Tightening key, 6 ... Secondary ram drive shaft gear, 7
... main ram connecting rod, 8 ... secondary ram shaft, 9a, 9b ... bevel gear, 10 ... secondary ram connecting rod, 27 ... primary ram slide plate, 72 ... secondary ram.

Claims (1)

[Claims] 1. A gear 4 and a slave ram drive shaft 3 fixedly mounted at an end of the main crank shaft 2 by arranging a slave ram drive shaft 3 in parallel above a main crank shaft 2 connected to a rotary drive mechanism. A pair of main ram connecting rods are meshed with a gear 6 which is removably pivotally attached to the end through a tightening key 5 with the same number of teeth, and are connected to the main crankshaft 2 with a predetermined eccentricity at intervals. A sub-ram shaft 8 disposed orthogonally to the main crank shaft 2 between the sub-ram shafts 7 and 7 is connected to the sub-ram drive shaft 3 via bevel gears 9a and 9b. Secondary ram connecting rods 10 and 10 are connected to the outer ends with a predetermined eccentricity, and when the tightening key 5 is loosened, the secondary ram drive shaft 3 is rotated to rotate the primary crank shaft 2 and the secondary ram shaft. The timing of the main ram and the slave ram can be adjusted by adjusting the phase with 8. Double-acting press apparatus according to claim.