JPS61232024A - Rotary press device - Google Patents

Abstract

PURPOSE:To reduce the size of a device and to improve working accuracy by supplying works to press dies disposed in opposing positions, forming the works and releasing the same by using a rotating body which rotates intermittently and slides in the axis direction when the rotation stops. CONSTITUTION:Plural pieces of work holders 19 which expose outward part of works 17 and hold the same are provided and are intermittently rotated by an intermittent driving device 11. The rotating body 4 which is slid in the axis direction by a sliding device A is disposed. The works held by the holders 19 are supplied to the lower press die 23 and upper press die 24 fixed to a machine body 1 and release the same therefrom by utilizing the sliding motion of the body 4 in the position where the body 4 stops the intermittent rotating motion. The upper and lower dies of the press are disposed respectively in a circular shape and the works are fed by the rotary type in the above- mentioned manner, by which the reduction in the size of the device and the improvement in the working accuracy and efficiency are made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a press apparatus that continuously performs a plurality of press processes.

(b) Conventional technology Conventionally, as a device that performs multiple steps of press processing continuously, continuous press processing is performed by gripping the workpiece with fingers and sequentially moving it horizontally along a straight press line equipped with a press device. There are transfer presses and turret presses that rotate upper and lower turrets holding multiple molds synchronously and supply workpieces between them.

(c) Problems to be solved by the invention In the transfer press described above, the press devices are installed in a straight line, so the entire device becomes large and requires a large installation space.
Since the workpiece is moved by changing the view, there is a problem with the movement accuracy of the workpiece, that is, the processing accuracy of the product.Furthermore, although there is no problem with flat workpieces, there is a problem that depending on the shape of the workpiece, it may not be possible to grip it with the fingers. .

In addition, in the turret press, the mold held in the turret is rotated and moved under the descending ram at one location, so there is a drawback that the workpiece must be moved back and forth and left and right.

(d) Means for Solving the Problem In order to improve the above-mentioned drawbacks, the present invention includes a plurality of workpiece holding devices that hold a part of the workpiece exposed to the outside, and an intermittent drive device that holds the workpiece intermittently. A rotating body to be rotated, a sliding device that slides the rotating body in the direction of the rotation axis, and opposing positions of each workpiece held by the work holding device in the sliding direction of the rotating body at a position where the intermittent rotational movement of the rotating body is stopped. The press lower molds are placed in the respective positions and fixed to the machine body, and the rotary body is surrounded by a plane perpendicular to the rotation axis of the rotary body, and the press lower molds are respectively placed at opposite positions to the press lower molds, and are raised and lowered by a lifting device. It consists of an upper press die that is freely held in the machine body, and when the rotating body slides backward, the workpiece engages with the lower press die, when it slides forward, the workpiece is released from the lower press die, and when the press upper die descends, the workpiece engages with the lower press die. The press is characterized in that the mold engages with the lower press mold, and the upper press mold is released from the lower press mold when rising.

(E) Function To explain the present invention in detail, when the rotating body is stopped, a workpiece is supplied into the workpiece holding device of the rotating body, and after the rotating body is rotated by a predetermined angle by the intermittent drive device, the sliding device is activated. When the rotating body is slid back, the workpiece engages with a lower press mold fixed to the machine body. Therefore, when the rotating body is surrounded by a plane perpendicular to the rotation axis of the rotating body and the press upper die placed opposite the lower press die is lowered and raised by the lifting device, the workpiece is moved by the upper and lower dies of the press. Next, when the rotating body is slid forward, the workpiece is released from the lower die of the press, and at this point, the workpiece is placed in the workpiece holding device behind the previously fed workpiece -\a new workpiece is fed, When the rotating body is rotated by a predetermined angle, the previous workpiece is positioned in front of the press lower die of the next process, and the subsequent workpiece is positioned in front of the press lower die of the first process, and the sliding device is activated. If the rotary body is then moved backward and the above-mentioned operation is repeated, a plurality of pressing steps will be completed while the rotary body rotates while holding the workpiece.

(f) Example An example in which the present invention was applied to press working of a peripheral wall of a cap-shaped metal article will be described with reference to the drawings. Reference numeral 1 denotes a machine body, and from the left in FIG. 1, the first wall 1 as the second wall 1
b, 3rd wall IC% 4th wall 1d is made to stand upright.

Reference numeral 2 denotes a main shaft, which is rotatably and slidably supported by bearings 3 installed on the second wall 1b and the third wall 1c, and has a disc-shaped rotating body 4 on the left end and a grooved metal fitting 5 on the right end. In addition, a gear 6 is fixed to the intermediate part, and a Geneva mechanism or a gear 8 fixed to a driving shaft 7 driven by a prime mover (not shown) is driven by a timing belt 10 via an intermediate gear 9. It is intermittently rotated by a predetermined angle by the gear 6 via gears 12 and 13 by an intermittent drive device 11 configured with a barrel cam mechanism or the like. Reference numeral 14 denotes a grooved cam engraved on a disc 15 fixed to the driving shaft 7.
The grooved cam 14, the shift arm 16, and the grooved metal fitting 5 constitute a sliding device A, which controls the rotational movement of the driving shaft 7 in the front-rear direction of the main shaft 2. It is converted into sliding motion. Next, eight recesses 18 for holding the workpiece 17 are formed on the back surface of the outer peripheral part of the rotating body 4,
Each recess 18 is provided with a workpiece holding device 19 that is slidably guided in the through hole of the rotating body 40, so that the workpiece 17 is clamped by a spring 20, and a trochanter 21 is provided at the tip of the workpiece holding device 19. When the rotor 4 slides forward, the rotor 21 comes into contact with the protrusions 22a and 22b protruding from the first wall 1a at the supply and discharge positions of the work 17, and the work holding device 19 is clamped by the spring 20. I try to release the pressure. 23a is a press lower die fixed to the second wall 1b so as to engage the workpiece 17 when the rotating body 4 slides backward;
Press lower molds 23 for each process are placed at six corresponding positions in the recesses 18, excluding the supply and discharge positions of the workpiece 17.
b, 23c... are fixedly installed.

Reference numeral 24a denotes a press upper die provided at a position opposite to the press lower die 23a, which is fixed to a sliding body 26 which is slidably held by a guide 25 fixed to the second wall 1b. 2. The shaft 29 to which the operating rod 28 is fixed has a second
A drive rod 30 is fixed on the back side of the wall 1b, and its tip engages with the groove cam 32 of the disk 31 loosely fitted in the bearing 3, and the disk 31 is moved from the driving shaft 7 by gears 33-34-35-36. These components constitute a lifting device B.

Next, the operation of this embodiment will be explained. Intermittent drive device 11
The workpiece 17 is supplied to the recess 18 of the rotating body 4 when the rotational movement of the rotating body 4 is stopped. In this case, the rotating body 4 is in an advanced state by the sliding device A, that is, in a state close to the first wall 1a,
At the workpiece 17 supply position, as shown in FIG. Since the workpiece 17 is being pushed out, the intermittent drive device 11, which can easily feed the workpiece 17, operates and the rotating body 4
When the trochanter 21 starts to rotate, it comes off the protrusion 22a, and the workpiece holding device 19 securely holds the workpiece 17 in the recess 18 by the elasticity of the spring 20, and then the workpiece 17 rotates 1/8 and then stops. . Groove cam 1 of sliding device A from this point on
Due to the deviation of the rotating body 4, the rotating body 4 slides backward and the workpiece 17 rushes into the lower press mold 23a. Next, the press upper mold 24a is lowered and raised by the deviation of the grooved cam 32 of the lifting device B to perform the first step of pressing.Next, the sliding device A
When the rotary body 4 slides forward due to the deviation of the grooved cam 14, the workpiece 17 is released from the press lower mold 23a, and the trochanter 21 of the workpiece holding device 19 on the rear side is moved against the protrusion 22.
It comes into contact with a and enters the work supply state. From this state, the above-mentioned operation is repeated, and the workpiece 17 is sequentially sent to the lower press molds 23b, 23c, 23d, -'', and is continuously pressed by the respective upper press molds 24b, 24c, 24d, etc. Then, at the release position, the trochanter 21 of the workpiece holding device 19 comes into contact with the protrusion 22b, and the workpiece falls.

Incidentally, by connecting the automatic feeding device shown in FIG. 4 to the above embodiment, efficiency can be further increased. That is, in FIG. 4, the open end of the guide body 37, in which the cap-shaped hardware is transferred in a line, is installed so as to face the outer periphery of the rotating body 4, and stoppers 38, 39 are installed above and below the tip.
By moving the opening/closing lever 40 equipped with a cam 41 up and down, it is possible to supply one piece at a time.

Furthermore, in FIG. 5, the press upper die is further projected from the press lower die side of the embodiment of FIG. 1, but in this embodiment, the disk 31 of the first embodiment is further Disk 4
2 is fixed to the second wall 1b, a grooved cam 43 is provided, and a press upper die 46 is slidable only using the guide rod 45 of the lower die holder 44 fixed to the second wall 1b as a guide, and one end is attached to the press upper die 46. A lever 48 which is locked and whose other end is pinned 47 to the second wall ib is caused to protrude by engaging with the grooved cam 43.

As described above, by adding the automatic work supply device and the upper mold ejecting device to the present invention, an efficient multifunctional press device can be obtained.

(G) Effects of the Invention As described above, the present invention has the upper and lower press molds arranged in a circular shape, and the workpiece is sent to the rotary set by the rotary body, so that the apparatus can be downsized.
Since the workpiece is held and sent to the next process without being re-grabbed, processing accuracy can be increased, and multi-step continuous processing can be carried out efficiently.Moreover, both the upper and lower molds of the press are held in the machine body. Because of this, it can be made strong, has a simple structure, and can be manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing a part of the device of the present invention developed;
Fig. 2 is a partially omitted view taken along the line X-X in Fig. 1, Fig. 3 is a side sectional view of the workpiece feeding portion where the rotating body slides forward and the workpiece holding device is in the feeding state, and Fig. 4 The figure is a partial front view of the automatic feeding device, and FIG. 5 is a side sectional view showing an embodiment in which functions are added to the present invention. DESCRIPTION OF SYMBOLS 1... Machine body, 4... Rotating body, 11... Intermittent drive device, 17... Work, 19... Work holding device, 2
3a, 23b, 23c, 23d--press lower mold,
24a. 24b, 24c, 24d...press upper mold, A...
・Sliding device, B... Lifting device. $1 diagram r

Claims (1)

[Claims] A rotating body 4 that includes a plurality of work holding devices 19 that hold a part of the work 17 exposed to the outside and that is intermittently rotated by an intermittent drive device 11, the rotating body 4 being rotated in the direction of the rotation axis. A sliding device A for sliding the workpieces 17 held by the workpiece holding device 19 at a position where the intermittent rotational movement of the rotor 4 is stopped is located at a position facing each workpiece 17 in the sliding direction of the rotor body, and is fixed to the integral body 1. The lower press mold 23 and the rotary body 4 are surrounded by rotating bodies on a plane orthogonal to the rotation axes of the rotary body 4, and are disposed at positions facing each of the lower press molds 23, and are movable up and down by the lifting device B. When the rotating body 4 slides backward, the workpiece 17 engages with the lower press die 23, and when the rotating body 4 slides forward, the workpiece 17 engages with the lower press die 24.
3, the press upper mold 24 engages with the press lower mold 23 when the press upper mold 24 descends, and the press upper mold 2 engages with the press lower mold 23 when it rises.
A rotary press device characterized in that a rotary press 4 is configured to be released from a press lower mold 23.