JPS6410290B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention provides a metal band or wire drawing device,
An automatic punch-bending machine for producing multi-shaped small parts from metal strips or wires, comprising a punching device and at least one bending device, the bending device comprising a plurality of sliding devices each equipped with a bending tool, namely , a sliding device arranged around a central workshop, a central drive mechanism for driving a plurality of bending tools, a punching device, and a drawing device.

(Prior Art) An example of a conventional punch bending machine of this type is U.S. Pat. ing. This space is large with respect to the longitudinal dimensions of the small parts being manufactured.

(Problems to be Solved by the Invention) When manufacturing a series of different small-sized workpieces in a machine using such conventional technology, if there is an unnecessary space between the punching device and the bending device, the small-sized workpieces will be Problems have arisen in that difficulties arise in accurately feeding the workpiece to the next device.

It is an object of the invention to provide a punch bending machine that can be easily reassembled or adapted for the production of different workpieces.

Another object of the invention is to provide a punch-bending machine which prevents inaccurate feeding of workpieces from the punching device to the bending device, especially when workpieces of different dimensions are manufactured with the machine. .

(Means for Solving the Problems) The present invention provides an automatic punch-bending device in which a device for drawing in a strip or wire on a machine table, and a punch device and a bending device are arranged in series in the feeding direction of the strip or wire. , a sliding guide rail device mounted on the machine platform in the feeding direction of the strip or wire;
a bend movable on said guide rail device for precise adjustment of the pickling of the workpiece between a first position overlapping the punching device and a second position spaced apart from said punching device in the direction of feed of the strip or wire; The gist is an automatic punch bending machine consisting of a device.

(Embodiments) Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

FIGS. 1A and 1B schematically show an automatic punch-bending machine 10 in which a drawing device 14, a punching device 16 and a bending device 18 are mounted on a machine platform 12. FIG. The drawing device 14, the punching device 16, and the bending device 18 are each already known, but the drawing device 14 is a reciprocating clamp that grips the strip or wire and moves it forward by the length of one strip or wire. The clamping device returns to its initial position while the punching device 16 is in operation, and the clamping device grips the strip or wire again and sends it forward to transfer the strip or wire to the bending device 18. send in. Further, the punching device 16 is a general punching device, and the bending device 18 has a configuration similar to that disclosed in the above-mentioned U.S. Pat. No. 3,052,277. It has a central wheel 20 on which a plurality of radially arranged sliding devices 21 carrying tools 23 are mounted. The machine platform 12 is equipped with a sliding guide rail device 22 which extends in the longitudinal direction of the platform 12 and in the rear half of the platform 12, while the punch device 16 extends in the front half of the platform 12. It is located. By means of the rail device 22, the bending device 18 is guided displaceably in the direction of the double arrow 24 from the position 18' shown in solid lines to the position 18'' shown in dashed lines. ′, the bending device 18 is
Although generally spaced apart from the punching device 16, in the second position 18'' the bending device 18 extends 1/2 of its length in the direction of the punching device 16.
The space between the axis 48 of the bending device 18 and the center 50 of the punching device 16 is thereby reduced. Due to the spacing b between the guide rail device 22 of the bending device 18 and the punch device 16 shown in FIG. 1B, the bending device 18 in position 18''
and the punching device 16 are in a front-to-back overlapping condition, with the bending device at position 18'' being partially at the rear of the punching device 16.

The space between the bending device 18 and the punching device 16 is used for the workpieces 52, 54 to be manufactured (FIGS. 5 and 6).
According to the length (see Figures A and B), ie according to the pitch of the strip or wire 56, it is chosen as small as possible.

The automatic punch bending machine 10 has a central drive mechanism 26
(see FIG. 1B), the main shaft 28 of which drives the eccentric shaft 32 of the punching device (or press) 16 by means of a chain or belt 30, and also drives the drawing device 14 via a bevel gear 34. Drive.
The drawing device 14 and the punching device 16 are combined as one structure, and then the bending device 1
8 are spaced apart and drivingly connected to the main shaft 28 by a toothed hollow shaft 36, with the main shaft 2 disposed inside the hollow shaft 36.
8 are inserted in a nested manner. Therefore, the bending device 18 can be positioned at any displacement position 1 on the machine platform 12.
8' and 18'' are also drivingly connected to the main shaft 28.

FIGS. 2A and B differ from FIGS. 1A and B in the following respects. That is, the bending device 18 is fixed to its own stand 12', and this unit is capable of transporting the new bending device 18 to be prepared onto the machine stand 12'.
2, the bending device 18 can be removed as a whole from the machine platform 12 for reinstallation at another location. While the bending device 18 is fixed to its base 12', the unit 1 consisting of a drawing device 14 and a punching device or press 16
7 on the sliding guide rail device 22 of the platform 12 in the direction of the double arrow 38, i.e. in a first position 17', shown in solid lines in FIG. The second position 17'' of the unit 17 is shown by a solid line in FIG. There is a minimum distance between the axis 48 of the device 18 and the center 50 of the punch device 16.
a'', so that devices 16, 18 are in maximum overlap.

3A and 3B show a punch bending machine 110 in which the punching device 16 and the drawing device 14 are not modified, but the bending device 118 is shown.
is mounted on the guide rail 41 so as to be freely movable in the longitudinal direction of a slide 40 that is movable in the longitudinal direction of the guide rail device 22. The bending device 118 is
At a position rotated 90° with respect to Fig. 1A, center wheel 2
It is mounted so that the axis 48 of 0 is parallel to the feeding direction of the strip or wire. Shaft with nesting teeth 3
6 is connected to a pinion 42 that meshes with the toothed outer periphery of the central ring 20.

4A and 4B illustrate a punch bending machine 210 having a horizontal bending device 218. FIG. The axis 48 of the central wheel 20 extends vertically. The punch device 16 is arranged on the upper surface 11 of the platform 12 with a vertical spacing c equal to the height of the bending device 218. This distance c can be filled by a blind box 44 whose height corresponds to the height of the bending device 218.
After removing the blind box 44, the bending device 218 is moved in the direction of the double arrow 46 from the position 218' to the position 218'', which places it in the space below the punching device 16;
On the contrary, it is movable on the guide rail device 22. Center 4 of bending device 218 and punching device 16
The maximum space a' between 8 and 50 is shown in solid lines in FIGS. The bending device 218 , which is located below the punching device 16 , is driven via a telescoping shaft 36 and a bevel gearing 43 .

(Operation) FIG. 5B shows the bending device 18 in a position 18a slightly displaced with respect to the bending position 18' shown by the punch bending machine 10 according to FIGS. 1A and B, but not overlapping the punch device 16. have A space a between the shafts 48 and 50 indicated by a chain line is a space a between the shafts 48 and 50.
The pitch of the strip 56 (FIG. 5A) is precisely adjusted and is also precisely calculated to be two and a half times the length of the workpiece 52. If the machine is to accommodate a shorter workpiece 54 (FIG. 6A), the bending device 18 is moved to position 18'' as shown in FIG. The space a'' is reduced to correspond precisely to the pitch of the strip of the small workpiece 54. Also, in this example, this space a
is two and a half times the length of the workpiece 54. Generally, the space should be twice, three times, four times, etc. the longitudinal dimension of the workpiece plus half the length of the workpiece. The additional half length is required because the center 50 of the punching device 16 coincides with the center between two adjacent workpieces;
On the other hand, the center 48 of the bending device coincides with the center of the workpiece itself.

The present invention is not limited to the above embodiments, but can also be configured as follows. Instead of just one bending device 18, 118 or 218, several bending devices can be arranged in series. The machine not only has a drawing device, a punching device or a pressing and bending device, but additionally other processing devices can be inserted into the processing process as appropriate, such as milling machines, plastic forming machines, etc. Furthermore, the machine is not limited to strip material, but can also handle other workpieces in a row that are in contact with each other.

(Effects of the Invention) The main advantage of the present invention obtained by displacing the bending device and the punching device in relation to each other is that very small workpieces and very long workpieces can be This means that it can be manufactured by machine. In addition, this machine is always at a high This means that it is operated with precision. In addition, the bending device is
It is very important that it can be removed from the rest of the machine in order to replace it with one that has been reinstalled and adapted for different bending operations in the previous work process at another work station. It is convenient for The downtime of the machine is therefore substantially reduced.

[Brief explanation of drawings]

Figure 1A is a schematic diagram of a punch bending machine, Figure 1B
2A is a schematic diagram similar to FIG. 1A, but in which the bending device is displaceably disposed on its own platform; FIG. 2B is a plan view thereof; FIG. 3A is a schematic diagram of a punch bending machine in which the bending device is mounted laterally so that the axis of the central ring of the bending device is parallel to the feeding direction of the strip or wire; Figure B is a schematic plan view, Figure 4A
is a schematic diagram showing a punch bending machine in which the axis of the central ring is vertical, FIG. 4B is a plan view thereof, and FIG. 5A
5B shows a relatively large workpiece; FIG. 5B is a schematic diagram of a punch bending machine in which the space between the bending device and the punch device is adjusted for relatively large workpieces; FIG. A is a diagram showing a relatively small workpiece;
FIG. 6B shows the machine of FIG. 5B, but with the space between the punching device and the bending device constricted for smaller workpieces. 10... Automatic punch bending machine, 14... Pulling device, 16... Punching device, 18, 118, 218...
Bending device, 20... Central wheel, 26... Central drive mechanism,
40...Slide.

Claims (1)

[Scope of Claims] 1. An automatic punch-bending device in which a device for drawing a strip or wire onto a machine table, a punch device and a bending device are arranged in series in the feeding direction of the strip or wire, Processing is carried out between a sliding guide rail device installed on the machine table in the feeding direction of the wire rod, a first position overlapping a punch device in the feeding direction of the strip or wire rod, and a second position spaced apart from the punch device. and a bending device movable on the guide rail device for precise adjustment to the pitch of the object. 2. Automatic punch-bending machine according to claim 1, characterized in that the bending device as a whole is arranged removably and replaceably with respect to the punch device.