JP2565063Y2 - Press equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press used for manufacturing lead frames and the like.

[0002]

2. Description of the Related Art When a product having a fine pattern such as a lead frame is manufactured by press working, the press working is set for each step, and the press working is performed in order to form a finally required pattern. There is a feeding method. In such progressive processing, a long strip is used as a workpiece to perform continuous pressing,
A product formed in a predetermined pattern at the outlet side can be obtained by feeding the belt-shaped body at a pitch with a press device and performing required press working step by step. The punching order and the like in actual press working differ depending on the product, but it is not unusual that one press machine performs press work of about 20 steps. Pressing in multiple steps in this way means that different dies are sequentially arranged on the mold side in accordance with each of these steps.

[0003] In the meantime, when steady processing is performed by the above-described press working, the workpiece is processed while being fed at a predetermined pitch, but in the conventional apparatus, the band is applied to the press at the start of pressing. The setting at the time is a problem. That is, as shown in FIG. 1, the workpiece 10 is inserted from the entrance side of the press device 20 and is gradually processed. However, the workpiece 10 is formed in a simple flat plate shape and has holes for positioning and the like in advance. Is not provided, and it is not possible to accurately support the band-shaped body and perform press working at the processing start stage.

[0004] Therefore, conventionally, at the start of processing, a workpiece is manually fed one pitch at a time from a mold on the entrance side.
The work material is sequentially moved to the final end mold while performing the pressing operation once, and when a series of processing steps are all completed, automatic feeding is switched to press working. Only when the workpiece is sent until a series of processing steps is completed, the processing is switched to automatic processing. After a series of processing steps are completed, the workpiece is automatically positioned and can be continuously processed. In this way, the setting that is performed while feeding manually at the start of processing is that in the press device, the ejectors are installed to protrude upward at various places in the mold, and simply insert the workpiece into the entrance of the device and insert it. This is because, if automatic feeding is performed, the leading end of the workpiece is locked by the ejector and cannot be advanced. The work of setting the workpiece while feeding it in a pitch until automatic feeding is possible is called layout creation.

[0005] As a method of simply processing without making the above-mentioned layout, a work material is drawn from the entrance of the press device to a die position at a final end at a processing start stage, and is processed by automatic feeding as it is. There is also a way to do. In this method, some steps on the tip side of the workpiece are not used as a product, but in addition to wasting the material, the method is relatively difficult to use as a workpiece such as a product used for a power transistor. In the case of using a thick material, it is not appropriate to perform punching all at once in the first stage from the viewpoint of the strength of a punch or the like, and this method may not be applicable to some products.

[0006]

When a workpiece is applied to a press machine by the above-described layout making method, it requires a lot of work if there are many working steps. As a problem of the actual layout, when the workpiece is thick and heavy, the workpiece retreats due to its own weight, so that it cannot be set alone. For example, a tensile force of about 3 kg acts on a lead frame for the above-mentioned transistor or the like. For this reason, it is necessary to support the work material so that it does not shift, and since the usual press device is a two-handed switch for safety design, it does not require two people to work and the work material does not shift I work with weights. As described above, the conventional layout making is a very complicated operation, and there has been a problem that a complicated operation must be performed each time one press working is completed and a new product is applied. Therefore, the present invention has been made to solve the above-mentioned problems, and the purpose of the present invention is to make it easier to make a layout when a long band such as a lead frame is put on a press device, and to make a press. It is an object of the present invention to provide a press device capable of facilitating a setup operation in processing.

The present invention has the following configuration to achieve the above object. In other words, at the start of press working,
Hands up to the machining step that can automatically feed the workpiece
Set by performing forward operation and press operation by motion
After that, switch to automatic press processing to process long objects
In a press apparatus for manufacturing a press said workpiece
Automatically feeds the workpiece to the feed-in position to be processed
And a feeder provided before the feeder.
The material is placed vertically facing each other with the material
By one way clutch when setting by
The work material is prevented from returning by its own weight and
Equipped with a clamp roller that clamps the workpiece in the thickness direction
The backstop mechanism is provided .

[0008]

[Function] To the clamp roller provided in the backstop mechanism
The workpiece is clamped from above and below
The work material is clamped by the way clutch.
Is held so as not to return. Workpiece is reversed
The workpiece material
Can be set easily and reliably.
To easily and efficiently replace products
Becomes possible.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an explanatory view showing one embodiment of a press device according to the present invention. In the figure, the workpiece 10 is progressively fed from the left side to the right side of the figure and pressed.
Reference numeral 11 denotes an upper die, 12 denotes a lower die, 13 denotes a press ram, and 14 denotes a press bolster plate. Reference numeral 15 denotes a feeding device for sequentially feeding the workpiece 10, and 16 denotes a backstop mechanism for preventing the workpiece 10 from returning. Reference numeral 17 denotes a guide support for introducing the workpiece 10 into the feeding device 15.

FIG. 2 shows the backstop mechanism 16 as viewed from the entry side of the workpiece 10. 30a, 3
Reference numeral 0b denotes a clamp roller that clamps the workpiece 10 when making a layout, 32 denotes an air cylinder that pushes the clamp roller 30a up and down, and 34 denotes a clamp roller.
This is a vertical movement guide that guides the vertical movement of a. 36 is a one-way clutch coaxially mounted on the shaft of the lower clamp roller 30b. The one-way clutch 36 allows the clamp roller 30b to rotate only in one direction for feeding the workpiece 10 forward.

In the pressing apparatus of the embodiment, the workpiece 10 is pitch-fed by the feeder 15 in the regular processing and subjected to required processing to produce a product. During the regular pitch feed, the clamp rollers 30a and 30b are open, and the workpiece 10 is supported by the lower clamp roller 30b and is conveyed freely. At the time of making a layout in which the workpiece 10 is placed on the press device, the feed device 15 is stopped, and the workpiece 10 is supported by the backstop mechanism 16.
Send the pitch one pitch at a time to make the layout. The air cylinder 32 is operated to clamp the workpiece 10 to the clamp roller 30.
By clamping with the a and 30b, the workpiece 10 is supported by the one-way clutch 36 without returning.

Since the workpiece 10 is supported by the backstop mechanism 16 in this manner, the workpiece 10 is fed at a predetermined pitch when a layout is created, and a pressing operation is performed step by step to sequentially create a layout. Can be. In the apparatus according to the embodiment, the workpiece 10 is securely supported by the clamp rollers 30a and 30b, and the backward movement is reliably prevented. Layout can be created. By providing the backstop mechanism 16 in this manner, the layout can be made by one person, and the operability and the safety are excellent.

As described above, the press apparatus of the embodiment is provided with the back stop mechanism 16 to facilitate layout creation at the start of working, but is easily installed on various types of press apparatuses. It also has the advantage that it can be used. There are various types of feed mechanisms for a workpiece in a press device, such as those using a walking beam, those using a feed roller, and the above-mentioned backstop mechanism is simply attached to these various types of press devices. Useful and useful. In addition, there is an advantage that the attachment position is not limited, and the attachment position can be appropriately set. As described above, the present invention has been described variously with reference to the preferred embodiments. However, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the contents of the present invention. Nor.

[0014]

According to the press apparatus of the present invention, as described above, when a long strip-shaped workpiece is applied to the press apparatus, the workpiece returns by its own weight and is displaced. The layout can be suitably prevented, and the layout can be easily created. As a result, it is possible to make a layout by one person, streamlining the work when setting the work material on the press device, improving the safety in work, and improving the handling of the press device It has significant effects such as being able to do.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of an embodiment of a press device.

FIG. 2 is an explanatory diagram of a backstop mechanism attached to a press device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Workpiece material 11 Upper die 12 Lower die 13 Press ram 15 Feeding device 16 Back storage mechanism 20 Press device 30a, 30b Clamp roller 32 Air cylinder 34 Vertical movement guide

Claims (1)

(57) [Scope of request for utility model registration] (1) At the start of press working, a long body
Manual operation up to the machining step where the workpiece can be automatically fed
After setting by performing sequential feeding and pressing operation,
Manufacture of long body processed products by switching to press working by motion
In the press device, the workpiece is placed at the introduction side where the workpiece is pressed.
The feeding device for forward feeding of Industrial Materials automatically provided, upstream of said transmission Ri apparatus, opposed upper and lower positions across the workpiece
As well as the manual setting
When the workpiece is lifted by its own weight
To prevent the workpiece from returning in the thickness direction.
A press device comprising a backstop mechanism having a clamp roller for clamping .