JPH028658Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cutting mold for forming small parts, for example, small parts used in electronic equipment and the like.

Conventional technology and its problems Small IC parts with high precision, such as IC metal lids, epoxy lids, and metal substrates used in electronic devices, are usually cut using a cutting mold (usually called a die set). A method has been adopted in which the parts are cut using tweezers or the like, and the formed parts are placed in a predetermined position in an electronic device to be assembled by using tweezers or the like. For this reason, the above die set is incorporated into the assembly line of electronic equipment,
It may be possible to supply the die set to a predetermined location while forming small parts, but the upper blade holder of the die set has a structure that moves up and down along a plurality of guide posts, which has the disadvantage of being relatively large. .
Further, during long-term use, the sliding portion of the upper blade holder relative to the guide post wears, causing problems in durability such as play.

Purpose of the invention In view of these points, the present invention eliminates the guide post mentioned above, simplifies the structure, enables miniaturization, increases durability, and securely grips the material during cutting to form small parts with accurate dimensions. The purpose is to encourage.

Structure of the invention The mold for cutting small parts according to the invention is equipped with an upper blade and a lower blade for cutting the supplied material, and the upper blade is attached with a blank holder that elastically supports the material, and the upper blade The upper blade is fitted into the upper blade guide groove formed in the vertical direction of the upper blade holder having a U-shaped cross section so as to be able to rise and lower. A pressing member for pressing is provided oppositely.

Embodiments Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

In the figure, a cutting die 1 includes an upper blade 2, an upper blade holder 3 that guides the upper blade 2 to move up and down, and a lower blade 4 provided opposite to the upper blade 2. The upper blade holder 3 is the third
As shown in FIG. 4, an upper blade guide groove 5 is formed on the inner surface with a U-shaped cross section, and a guide block 6 is fixed to the upper blade 2 with a mounting screw 7. Both are housed in the upper blade guide groove 5, and a yoke 10 is attached to the upper end via a mounting plate 8, and a lifting rod 11 connected to a crank mechanism (not shown) is connected to the yoke 10. There is.

A vertical groove 12 is formed between the guide block 6 and the upper blade 2, and a blank holder 13 for pressing the material A is slidably inserted into the vertical groove 12. The blank holder 13 is fixed with a mounting screw 14 that is inserted into the mounting plate 8, and is provided with a pressing spring 15 between it and the mounting plate 8.
As a result, when the upper blade 2 is in an upper position separated from the lower blade 4 (FIG. 2), the blank holder 13 is pressed downward by the pressing spring 15, and its lowered position is determined by the head of the mounting screw 14. , upper blade 2
When the material A descends, it follows this and descends to hold the material A under pressure (Fig. 5).

Reference numeral 16 denotes a pressing member that elastically supports the upper blade 2 in the guide groove 5, and is composed of a support plate 17 whose both ends are fixed to the upper blade holder 3 with mounting screws 18, and a pressing roller 19. It is rotatably supported by a shaft 20, and the support shaft 20 is supported by a bullet 21.
is biased toward the upper blade 2 side.

In the figure, 25 is a window hole for inserting the material A formed in the lower part of the upper blade holder 3, 26 is a material guide member attached to the lower blade 4, and 27 is a cut part B provided at the front end of the lower blade 4. For example, a rotary table for storing.

In the above configuration, the upper blade 2 is located at a distance above the lower blade 4 as shown in FIG. 2, and the material A is fed by a predetermined amount by appropriate means. Next, the upper blade 2 descends together with the guide block 6 and blank holder 13, and the blank holder 13 first presses the material A. The upper blade 2 and guide block 6 further descend, and the upper blade 2 and the lower blade 4 press the material A. A is cut to form a product of a predetermined length, that is, a small part B. The cut parts B may be stored in an appropriate storage box, but this example shows an example in which the cutting mold 1 is incorporated into an assembly line for electronic equipment, etc.
As shown in FIG. 5, a rotary table 27 is arranged below the lower blade 4, and the cut part B is placed on a workpiece 28 such as an electronic device stored on the table 27.
directly supplied. This saves the trouble of feeding with conventional tweezers, etc., and prevents errors in feeding the component B from the front and back or from the left and right.

Effects of the invention According to the invention, the upper blade is moved up and down along the upper blade guide groove provided in the upper blade holder, and is constantly pressed toward the bottom of the guide groove by the pressing member. The position relative to the blade is always maintained, and since the upper blade is attached with a blank holder that presses the material, the material is pressed and fixed during cutting, so the material does not move, and the resulting parts The dimensions are accurate and the cut surface can be made good. Moreover, since the conventional guide column is omitted, the entire structure can be made compact, so it can be incorporated into various small parts assembly or processing lines, and the formed parts can be directly supplied to the predetermined position of workpieces such as electronic equipment. Therefore, it has advantages such as being able to improve processing efficiency.

[Brief explanation of the drawing]

Figure 1 is an overall front view with a part cut away, Figure 2 is a sectional view taken along line X-X in Figure 1, Figure 3 is a plan view, and Figure 4 is a cross-sectional view taken along line Y-Y in Figure 2. A cross-sectional view along the line, and FIG. 5 is an explanatory diagram of the operation. Note that 1 is a cutting die, 2 is an upper blade, 3 is an upper blade holder, 4 is a lower blade, 5 is a lower blade guide groove, 13 is a blank holder, 16 is a pressing member, A is a material, and B is a small part. be.

Claims (1)

[Scope of utility model registration request] It is equipped with an upper blade and a lower blade for cutting the supplied material, and the upper blade is attached with a blank holder that elastically supports the material, and the upper blade has a U-shaped cross section. The upper blade is fitted into the formed upper blade guide groove so as to be movable up and down, and the upper blade is provided with a pressing member that elastically presses the upper blade into the upper blade guide groove. Mold for cutting small parts.