JPH0614904Y2 - Transfer device for press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a transfer feeding device driven by a crankshaft of a press for transfer machining of small parts.

(Prior Art) In a transfer feed device that is interlocked with the rotation of a crankshaft of a press, maintaining the feed accuracy becomes a problem when the speed is increased, and it is required that the feed drive unit has a low inertia. In the transfer feeding device, the feed driving unit having a structure of low inertia by incorporating a planetary gear mechanism and an eccentric pin is incorporated.

(Problems to be solved by the invention) A conventional feed drive device for a feed bar, which is a combination of a planetary gear mechanism and an eccentric pin, has the advantages of low inertia and high accuracy, but it is mechanically complicated and the device is complicated. Since the size of the whole becomes large, the cost becomes high, and high processing precision is required for the component members of the apparatus, which causes a problem of lacking versatility.

(Means for Solving the Problems) The present invention is intended to solve the above problems, and an input shaft is installed under the feed drive device of the feed bar, which is installed so as to project on the side surface of the bolster plate of the press. When rotated in the direction, the output shaft is equipped with a roller gear device that repeats normal rotation, stop, reverse rotation, and intermittent forward / reverse rotation of the rotation every 90 ° rotation of the input shaft. The shaft is interlocked with the crankshaft of the press, a horizontally swinging feed lever is fixed to the output shaft protruding above the roller gear device, and a roller provided at the tip of the feed lever is attached.
It is engaged with a slider that is slidable in the left-right direction provided in the feed drive device, and a feed bar is connected to the slider, and the feed bar is fed, stopped, returned, and stopped at every 90 ° rotation of the crankshaft. The present invention provides a transfer transfer device for a press characterized by intermittently reciprocating rotation, and particularly, a transfer transfer device for a press having a simpler structure and a low inertia feed drive device as compared with a conventional device. Is provided.

Further, in the transfer feeding device of the present invention, the angles of the clamp and the unclamp are the same as those of the feed bar.
Within the stopping range of 90 °, it can be freely selected depending on the product height, mold structure, etc.

(Operation) Thus, the transfer feeding device of the present invention causes the two feed bars to perform the movement of each side of the right-angled quadrilateral each time the crankshaft rotates 90 °, and the crankshaft rotates once. Every time, the blank or the semi-finished product is conveyed to the next step between the steps by the fingers.

(Example) Hereinafter, the content of the present invention will be described in detail with reference to an illustrated example.

FIG. 1 is a plan view showing a main part of a transfer feeding device according to the present invention, FIG. 2 is a side sectional view taken along line AA of FIG. 1, and FIG. 3 is a feeding timing diagram of the device.

1 is a bolster plate of the press, which is in the left-right direction (X direction)
In addition, a plurality of mold mounting portions 2 are provided. On the left side of the bolster plate 1, there is provided a transfer feeding device 3 according to the present invention, which comprises a feed driving device 4, a clamp / unclamp device 5, a roller gear device 6 and the like. In addition,
The clamp / unclamp device 5 is also symmetrically provided on the right side of the bolster plate 1, but since it has the same structure, its illustration and description will be omitted.

Reference numerals 7 and 7 denote two feed bars provided in parallel to each other so as to oppose the left and right mold mounting portions 2, and are slidably supported by slide guides 8 of the left and right clamp / unclamp devices 5. The left end thereof is connected to a pair of holders 11 and 11 which are provided in a slider 9 of the feed drive device 4 and slide in a slot 10 in the front-rear direction (Y direction) and a connecting pin 12, respectively.

Reference numerals 14 and 14 denote guide rods which are horizontally installed in the box 13 of the feed drive device 4, and which hold the slider 9 slidably and are connected to the slider 9 together with the slider 9.
The book feed bars 7, 7 reciprocate in the left-right direction.

Reference numerals 16 and 16 denote guide rods installed in the box 15 of the clamping / unclamping device 5 in the front-rear direction, and a pair of slide guides 8 are held slidably. The clamp / unclamp device 5 includes a conventional drive mechanism that utilizes the rotation of the crankshaft of the press, and moves the pair of slide guides 8 in the front-rear direction so as to face each other and supports the pair of feed bars. 7 and 7 are moved toward and away from each other to cause a plurality of pairs of fingers 26 and 26 attached to the feed bars 7 and 7 to perform clamping / unclamping motion.

A roller gear device 6 is provided below the feed drive device 4. 18 is an input shaft of the roller gear device 6, and its case 17
Is provided so as to project to the left side surface. A belt pulley 19 is attached to the input shaft 18, and is driven by the crank shaft of the press via a belt device in the vertical direction (not shown). 20
Is a roller gear mechanism of the roller gear device 6, which is characterized by a low inertia transmission structure. When the input shaft 18 of the roller gear device 6 is rotated in one direction, its output shaft 21 moves 90 °
Every time the rotation is performed, the intermittent forward and reverse rotation movements of the forward rotation, the stop, the reverse rotation, and the fixed angle R ° are repeated.

The output shaft 21 is provided so as to project above the case 17, and a feed lever 22 is fixed to the output shaft 21 so that it is horizontally oscillated by R ° intermittently by the forward and reverse rotational movements. A roller (23) is rotatably supported by a pin (23) erected at the tip of the feed lever (22). The roller 24 is engaged with a guide groove 25 formed in the lower surface of the slider 9 in the front-rear direction, and intermittently swings the feed lever 22 at a constant angle R °, and intermittently reciprocates the slider 9 at a constant stroke in the left-right direction. Communicate briefly to. On the other hand, the feed bar 7, 7 is connected to the slider 9 as described above, and the feed bar 7, 7 is moved by the clamp / unclamp device.
Intermittent reciprocating motion with a constant stroke through the roller gear device 6 is combined with approaching and separating motion in the front-rear direction. Unclamping during feeding and feeding stop,
Performs a transfer feed motion consisting of a clamp that is returned between steps and stopped during return. The plurality of pairs of fingers 26, 26 of the feed bars 7, 7 convey the blank or the semi-finished product to the next process between the mold mounting portions 2 of each process every rotation of the crankshaft. In the feed timing chart of Fig. 3, the timings of the inter-step feed, unclamp, inter-step return, and clamp operations of fingers 26, 26 for each 90 ° rotation for one rotation of the crankshaft (one stroke of the press). Is illustrated.

(Advantages of the Invention) Since the transfer feeding device of the press of the present invention has the above-mentioned configuration and operation, the following various effects can be expected.

First, since the feed drive mechanism is simple and has low inertia, it is easy to maintain the feed accuracy when the speed is increased.

Moreover, since the device is compact and low in cost, it is suitable for transfer processing of small parts by installing it in a small-medium-sized crank press.

In addition, since the angle range of the clamp and unclamp is held at the 90 ° rotation angle of the crankshaft to allow a margin,
The die design for transfer processing becomes easy.

[Brief description of drawings]

FIG. 1 is a plan view showing a main part of a transfer feeding device according to the present invention, FIG. 2 is a side sectional view taken along line AA of FIG. 1, and FIG. 3 is a feeding timing diagram of the device. In the figure, 1 is a bolster plate of a press, 2 is a die mounting portion, 3 is a transfer feeding device according to the present invention, 4 is a feed driving device, 5 is a clamp / unclamp device, 6 is a roller gear device, and 7 is a feed bar. , 9 is a slider,
18 is an input shaft, 21 is an output shaft, and 22 is a feed lever.

Claims (1)

[Scope of utility model registration request] 1. A transfer feed device driven by a crankshaft of a press, wherein a feed drive device of a feed bar is installed beside a bolster plate of the press, and an input shaft of the feed drive device is provided below the feed drive device. When rotated in the direction, the output shaft of the roller gear device repeats intermittent forward / reverse rotation of a fixed angle of forward rotation, stop, reverse rotation, and stop every 90 ° rotation, and its input shaft projects sideways. The crankshaft of the press, the output shaft of which is vertically projected to the upper feed drive device, and in the feed drive device, the feed lever is fixed to the output shaft and horizontally swung, The slider is engaged with a roller at the tip of the feed lever to reciprocate in the feed direction, and a feed bar which can be opened and closed in the clamp direction is connected to the slider. The feed bar is fed at every 90 ° rotation of the crankshaft in conjunction with the rotation in one direction, and the transfer feed operation is performed by the unclamping during the feed stop, the return, and the clamp during the return stop. Characteristic press transfer feeder.