JPS62176794A - Removing device for material to be punched of stamping machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a punched object removal device for a punching machine, which is particularly suitable for use when the hole to be punched is minute.

[Conventional technology]

A punching machine such as a press machine punches and forms a predetermined hole in a workpiece plate using a punch and a die, and at this time, punching waste (hereinafter referred to as scrap) is removed from the hole of the die.

By the way, in order to increase processing efficiency in such a punching machine, it is required to make the punching speed (number of times) as fast as possible, or on the other hand, if the speed is increased, the negative pressure when the bonder returns, This causes a problem that the scraps are sucked up without being dropped.

For this reason, conventionally, as shown in Fig. 5, a punch (51) was used.
A passage (52) for discharging air in the axial direction is provided at the center of the
Compressed air is supplied to this passage (52), and air is jetted from the tip of the bonder (51) in the direction of the arrow (A), thereby preventing the scrap (S) from floating and ensuring that it can be repelled from falling. was. In addition, in Figure 5 (53
) indicates the hole in the hole, and (54) indicates the hole in the hole.

[Problem that the invention seeks to solve]

Incidentally, with the recent demand for precision machining, the diameter (size) of the punched hole is also required to be smaller and further miniaturized.

However, if the diameter of the punch (51) is made smaller, it becomes difficult to provide a passage (52) to prevent floating of the stacked scrap (S), and currently, punches (51) with a diameter of about IM71 or more do not have a passage (52) for preventing floating of the stacked scrap (S). I can't.

Therefore, if the punched holes are small, it is not possible to effectively prevent scrap from floating, and the reality is that this results in poor molding and deterioration of work efficiency.

It is also possible to use a separately prepared device such as a suction machine (for example, a vacuum cleaner) to suck in from the -F direction of the goo, but such a method would require a large-scale device and would be bulky. There are problems in that it increases costs and requires difficult maintenance.

[Failure to solve the problem]

The present invention solves the above-mentioned conventional problems, and provides a novel workpiece removal device for a punching machine that can be implemented in a small size and at low cost, and can reliably reject scraps, generally workpieces. This can be achieved by the device shown below.

That is, the punched object removal device (1) according to the present invention (FIG. 1)
For example, there is an air supply section (for example) that blows air in the direction of exclusion (in the direction of arrow (13)) into the exclusion passage (5) of the object to be punched (scrap, product, etc.) that communicates with the hole (4) of the gouer (3).
2), and the hole (4) and/or the exclusion passage (5)
It is characterized by generating negative pressure.

In addition, the present invention has an air supply section (2) according to an optimal embodiment.
) includes an air passage (6) that takes in compressed air from the upstream opening (61) and blows out air from the downstream opening (6o) facing the hole (4) or the exclusion passage (5). do. This air passage (6) is provided in the base part (7) on which the guide (3) is installed, and in particular, the downstream side of the air passage (6) is provided with an ejection hole (80) that communicates with the ejection passage (5) in the center. It can be formed by fitting a cylindrical passage-forming bushing (8) having a diameter into the guide (3) or the base part (7).

[For production]

Next, the effects of the present invention will be explained.

The punched object removal device (1) according to the present invention can directly utilize compressed air from an air pump installed in a factory, for example. First, when compressed air is supplied to the upstream open section (61) of the air passage (6), the air flows along the path indicated by the arrow (1).
In other words, the air passage (6) - (passage forming bushing (8)) -
- 10° flow opening (6o) = passes through the path of the repulsion passageway (5). At the same time, air flows from the downstream opening (6o) in the expulsion direction (
B), and as a result, a negative pressure is generated in the discharge hole (8) and the hole (4) located above the 1'' part (6o).

Therefore, during the punching process, the punched object that has been punched out is attracted in the repulsion direction (B) by the action of the negative pressure, and floating is reliably prevented.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a partially sectional front view of a punching machine equipped with a device for rejecting a punched object according to the present invention, FIG. The bottom view of the bushing, Figure 4, shows the first part that clearly shows the air passage of the displacement device.
It is a view taken along the line E-E in the figure.

First, in order to clarify the present invention, referring to FIG.
The schematic configuration of the punching machine shown in M) will be explained.

(7) is the base part, which consists of a lower die set (J2) and a seat plate (11) on the side adjacent to it.

A guide (3) (fixed type) is attached to the surface of the seat plate (11), and a tie bar (13) is attached above this guide (3).
)... Punchpazo I- moves up and down guided by...
(14) Prepare (movable type).

On the other hand, the goo (3) has one or more die holes (4) at a predetermined position, and on the other hand, the hole (4) on the punch butt (eye) side.
A punch (9) is provided opposite to 4).

Therefore, to perform the punching process, set the plate material (D) to be processed on the guide (3) (1) t, lower the bunch butt (14) to press the plate material (W), and lower the punch (9). All you have to do is finish it off.''Next, the punched material removal device (1) according to the present invention will be specifically explained.

Typically, the base portion (7) has a coaxial structure with respect to the hole (4);
In addition, a scrap removal passage (5) having a diameter larger than that of the hole (4) is formed through rt.

In this example, Sea!・Plate (11) - Passage forming bushing (hereinafter referred to as R bushing) (8) shown in Figure 2
The inner space of this R bushing (8) forms a displacement passage (5) on the seat plate 1-(It) side.

The R bushing (8) is made entirely of a hardenable material such as steel and has a cylindrical shape, and the length of the cylinder is equal to that of the seat plate (11).
corresponds to the thickness of Also, the R bush (8) is the upper half (8
The outer if of u) is formed to have a larger diameter than the hinge part (8d),
Form a step in the middle.

On the other hand, the sheet plate (11) has the corresponding l? Bunyu (
8) is formed with a fitting hole (16) having approximately the same shape into which it fits when it is press-fitted from above. Note that when fitted, the step of the R bushing (8) acts as a stopper to prevent downward displacement.

On the other hand, there is a lap in the middle of the lower half (8d) of R bush (8).

A ring 11°I formed with a constant width and a constant depth in the direction
An r-shaped air circumferential passage (17) is provided. Also R
The lower end surface of the bush (8), that is, the end surface on the exclusion side (8 m)
By drilling a plurality of holes in the axial direction, an axial passage (18) serving as an air outlet is provided. This passage (18
) are provided at approximately 90° intervals as shown in Figure 3, and each passage (
The inner (upper) end of 18) communicates with the circumferential passage (17). Further, the outer (lower) end of each passage (18) faces the expulsion passage (5) of the gusset (12).

like this! ? The bush (8) is extremely easy to manufacture. That is, the axial direction passage (18) is formed in 1) by a drill from one end face of a cylindrical block, and then the outer peripheral portion is sequentially cut.

A plurality of R bushings (8) are attached to the seat plate (11) depending on the number and type of punched holes (see FIG. 4).

On the other hand, an air feed groove (1) is provided on the surface of the seat plate (11), that is, on the surface (lla) that is in contact with the guide set (12).
9). One end of the feed groove (19) is located near the side surface of the seat plate (11), and the other end branches off halfway and connects to each fitting hole (16). By simply providing the feed groove (19), which is relatively easy to form, the air passage (6) can be formed when stacked on the guide set (12). In addition, the shipping l? η (19) and 13 holes (16)
A recess (20) is formed so as to straddle each of the grooves, thereby allowing the feed groove (I9) and the circumferential passage (17) to communicate with each other.

Also, feed iMt (
A concave air hose attachment port (21) is provided near one end of the air hose (19) with a thread cut on the inner peripheral surface, and a feed groove (19) is provided.
) By forming a connecting hole (22) with a drill or the like from the side, the attachment port (2I) and the feed 11f (19) are brought into communication with each other.

Therefore, the punched object removal device (1) according to the present invention (embodiment)
) can be assembled as follows.

First, a fitting hole (16) and an air passage (6) are formed in the seat plate (11). Note that existing notebook plates can also be easily processed. Then, press fit the pre-processed R bushing (8) into the fitting hole (I6),
Furthermore, the assembly is completed by stacking the screw set (12).

Further, in use, it is only necessary to connect an air hose (30) for compressed air from an air pump to the attachment port (21), and in this case, an existing air pump can be used.

Next, the operation will be explained. Compressed air flows in the direction of arrow (11) in FIGS. 1 and 2. In the R bushing (8), air is divided into 111 circumferential passages (17) and then ejected from each axial passage (18) at approximately equal pressure. The jetting direction substantially coincides with the axis of the expulsion passageway (5) and is the expulsion direction. As a result, a negative pressure is created in the displacement hole (80) of the bush (8) and the tie hole (4).

In this way, this device (1) can be assembled into an existing punching machine without any particularly complicated processing.
However, the only thing that needs to be prepared separately is R Butnoyu (8). In addition, everything fits within the seat plate (II).

Although the embodiments have been described in detail above, the present invention is not limited to these embodiments.

For example, the R bushing (8) may form only the lower half (8d), and this may be attached by screwing from the lower surface of the seat plate (11). Further, the axial passage (18) is provided slightly inclined with respect to the axial direction of the R bushing (8),
The ejected air may be made to rotate in a screw shape. Also, I? Bush (8) and seat plate (11)
) are close to each other, the feed groove (19) may be omitted. Furthermore, the I (button) (8) may be attached directly to the die (3).Also, the seat plate (II) can be attached by the R button (8) and a separate member that fits thereto.
It is possible to prepare an air supply section (2) that exhibits the same function as the above, and attach it to the bottom of the base section (7), for example. Note that this device (1) can be widely used in any equipment having a punching function, including presses. Further, although the case where scrap is rejected has been illustrated, the object to be punched may be the product itself, and in general, it can be applied to various types of objects to be punched. others,
Any changes may be made in the structure, shape, arrangement, number of parts, materials, etc. of the thin parts without departing from the spirit of the present invention.

〔Effect of the invention〕

As described above, the device for rejecting a punched object according to the present invention generates a negative pressure in the hole of the die and/or the rejection passage in the punching machine to remove the punched object, so that the following steps can be performed. obtain significant effects.

■ It is possible to reliably prevent objects to be punched from floating in minute punched holes, which has been a problem in the past. Furthermore, no matter how minute a hole is punched, it reliably exhibits its floating prevention function.

■ Simple configuration allows implementation at low cost. In particular, since it can be assembled into an existing punching machine and can use existing equipment, no separate equipment or equipment is required, and further cost reductions can be achieved.

■ In addition, miniaturization can be achieved, and in particular, if the hearing aid is assembled to the seat plate using an optimal embodiment, there will be no exposed parts to the outside.

■Furthermore, because of the negative pressure generation method, it is easy to collect and throw away the punched materials, and maintenance is also easy.

[Brief explanation of drawings]

Fig. 1.2 A partially sectional front view of a punching machine equipped with a displacing device according to the present invention. Fig. 2. A half-cut front view of a passage-forming bushing used in the displacing device. Fig. 3: A bottom view of the bushing. , Figure 4 2 Figure 1 1.1 showing the air passage of the displacement device
A view taken along the line E-E. FIG. 5: A vertical cross-sectional view of a bond and a die for explaining a conventional expulsion device. In the drawing, (1): Punching object removal device (2): Air supply section (3): Die (4): Die hole (6): Air passage (6i): Upstream opening (6o): Lower tAL opening (7) Two base portions (8) Two passages forming bush Patent applicant Wakaba Kogyo Co., Ltd. Patent attorney Shiguchi Shimo 1 Shigeru Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (5)

[Claims] (1) An air supply unit that blows out compressed air in the direction of displacement is provided in the hole of the die or in the displacement passage of the punched material that communicates with the hole, so as to generate negative pressure in the hole and/or the displacement passage. A device for removing punched objects from a punching machine. (2) The air supply section has an air passage that takes in compressed air from an upstream opening and blows out air from a downstream opening facing the hole or the expulsion passage. 2. A punched object removal device for a punching machine according to item 1. (3) A punched object removal device for a punching machine according to claim 1, wherein the air passage is provided in a base portion on which a die is installed. (4) The downstream side of the air passage is formed by fitting a cylindrical passage-forming bush having a discharging hole in the center that communicates with the displacing passage into a die or a base part. A punched object removal device for a punching machine according to item 1 or 3. (5) A patent claim characterized in that the passage forming bush comprises a circumferential passage formed on the outer periphery, and a plurality of axial passages that are formed through the circumferential passage from the expulsion side end face and serve as air jet ports. A punched object removal device for a punching machine according to item 4.