JP2001321865A - Sheet metal drilling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet metal drilling device which can reliably treat drilling scraps with a simple structure when a plate member is drilled from a lower side to an upper side. SOLUTION: A hole 10 is opened in a diagonally upward extending manner in order to drill a hole diagonally from the lower side, a scrap receiving surface 13 is provided facing the extending direction of the hole 10. When the stacked scrap S is brought into contact with a deflecting surface 14 provided on the scrap receiving surface 13, the direction of the scrap S is changed to form a space between the scrap and the next scrap, the highest scraps S is separated thereform, and falls in a discharge passage 9, and collected in a scrap can 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drilling apparatus for drilling a plate-like member from below to above.
In particular, the present invention relates to a scrap processing technique at the time of drilling.

[0002]

2. Description of the Related Art As a piercing process using a press machine in plastic working, a method of piercing a plate-shaped member from above is generally adopted.
That is, the upper die is provided with a male punch member, and the lower die is provided with a female die member. The work of the plate-shaped member is set on the lower die, and the slide portion of the press machine descends, firstly, the periphery of the perforated portion is pressed with a pad, and the upper die member is inserted into the lower die member.
As a result, an opening having a shape corresponding to the outer peripheral shape of the punch member (the inner hole shape of the die member) is formed in the work, and scum (scrap) punched into a shape corresponding to the opening accumulates in the die member. become. At the bottom of the die member, a relief hole for dropping the scrap by its own weight is provided,
The scrap passes through the die member and falls by its own weight into the escape hole. From the relief hole, it passes through the space in the bolster and is carried out of the factory by the lower conveyor of the press machine.

There is no problem if the scrap can be discharged from the die member by its own weight. However, depending on the workpiece, it may be necessary to perform drilling diagonally upward from below while the workpiece remains in a posture in which a certain type of processing has been performed. In this case, since the scrap processing is a bottleneck, drilling from below to above is not generally performed. That is, drilling from below to above results in the scrap being piled up sequentially.
If this scrap cannot be reliably processed one by one, the mold may be damaged and the work may be defective.

[0004] For this purpose, processing is conventionally performed by a method as shown in FIGS. In FIG. 6, after drilling a work W upward from below, scraps S stacked on a die member D are removed by vacuum suction and dropped into a relief hole H. In FIG. 7, another dedicated type E
The workpiece W is moved to the workpiece W, and the workpiece W is drilled there. In FIG. 8, the direction of the work W is changed by rotating so as not to perform drilling from below to above. For example, the workpiece W is rotated by 90 ° to perform horizontal drilling. For this purpose, the direction of the work W is changed, the work W is set in the exclusive mold F, and a hole is formed by the cam mechanism C or the like.

[0005]

However, the apparatus shown in FIG. 6 requires vacuum equipment, and the structure becomes complicated due to the construction of piping. In addition, there is a trouble in the vacuum equipment such as an unsupplied air or an air leak, and the reliability is lacking. FIG.
In this case, a dedicated facility is required, the cost is increased, and the number of working steps is increased, so that the productivity is inferior. 8 has the same problem as FIG. In addition, it takes a lot of time to change the direction of the work, resulting in poor mass productivity. SUMMARY OF THE INVENTION It is an object of the present invention to provide a plate-shaped member drilling device capable of performing scrap processing reliably and with a simple structure.

[0006]

In order to achieve the above object, an invention according to claim 1 is characterized in that an upper surface portion sandwiched between a fixed lower die and a movable upper die, and a lower portion from the upper surface portion. A drilling device for drilling a plate-shaped member having a bent surface portion bent upward from below into the bent surface portion, wherein the lower die includes an upper surface of the plate-shaped member. A first support member that supports the bent portion of the plate-shaped member; and a second support member that supports the bent surface portion of the plate-shaped member.
A punch discharge member is formed below the second support member to form a downwardly inclined scrap discharge passage between the support member and a punch member for making a hole in the bent surface portion of the plate-like member. A die member having a hole for receiving the punch member is disposed on the member, and the hole of the die member is communicated with the discharge passage, and is an inner surface of the first support member forming the discharge passage; A scrap receiving surface is formed facing the extension direction of the hole of the member, and an inclined surface in a direction intersecting with the extension direction of the hole is formed on the scrap reception surface.

According to a second aspect of the present invention, in the device for drilling a plate-shaped member according to the first aspect, the inclined surface of the scrap receiving surface is a curved surface. According to a third aspect of the present invention, in the apparatus for drilling a plate-like member according to the first or second aspect, a second die member is provided on a first support member that supports an upper surface portion of the plate-like member, and the second die The upper die facing the member is provided with a second punch member, and the upper surface of the plate-shaped member is drilled.

[0008]

According to the first aspect of the present invention, even when drilling is performed from the lower side to the upper side, the stacked scrap hits the inclined surface and shifts laterally, so that the scrap is reliably removed from the die portion. According to the second aspect of the present invention, since the curved inclined surface is used, the contact area is small when the scrap hits the inclined surface, the scrap is surely shifted laterally, and the scrap processing is stable. According to the third aspect of the present invention, since the boring can be performed in the same mold as the processing of the upper surface portion of the work, the working process can be shortened and the mass productivity is excellent.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view schematically showing a relationship between a perforated portion of a door trim and a perforating device when the present invention is applied to a door trim of an automobile. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a sectional view taken along line BB of FIG.
On one surface (right side in FIG. 1) of the door trim 1, there are a drilled portion 1a drilled from diagonally below about eight places and a drilled part 1b drilled from above about four places, and on the other side (left side in FIG. 1). There are drilled portions 1c that are drilled from above about eight places.

The drilling device 2 has an upper die 3 that can move up and down and a lower die 4 that is fixed. The lower die 4 is provided with a first support member 7 that supports the upper surface 5 of the door trim 1 sandwiched between the upper die 3 and the lower die 4. The first support member 7 supports the periphery of the perforated portion 1b of the door trim 1. A second support member 8 that supports a bent surface portion 6 that is bent downward from the upper surface portion 5 of the door trim 1 is provided below the first support member 7 and provided in the lower mold 4. First support member 7 and second support member
A scrap discharge passage 9 inclined downward is formed between the support member 8 and the support member 8.

As shown in FIG. 2, the second support member 8 includes
A die member 11 having a hole 10 corresponding to the perforated portion 1a of the bent surface portion 6 is fitted. The hole 10 extends obliquely upward and is opened, and communicates with the discharge passage 9. A punch member 12 inserted into the hole 10 of the die member 11 is provided at a position facing the hole 10. A scrap receiving surface 13 is provided on the inner surface of the first support member 7 forming the discharge passage 9 and facing the extension direction of the hole 10 of the die member 11.

A direction (p direction in FIG. 4) intersecting the scrap receiving surface 13 with the extending direction of the hole 10 (direction l in FIG. 4).
Deflection surface 14 is provided. The deflecting surface 14 is formed in a semi-cylindrical shape, and as shown in FIG. 4, when the stacked scraps S reach the deflecting surface 14, the uppermost scrap S is turned, and the gap between the scrap S and the next scrap is changed. Since the uppermost scrap S is displaced from the extending direction of the hole 10, the uppermost scrap S is separated and falls down the discharge passage 9. And scrap can 1
Collected in 5.

The scrap receiving surface 13 is formed on the lower surface of the block 16 which is inserted into the recess of the first support member 7 from above. The upper surface of the block 16 is formed on the same surface as the first support member 7 and performs the function of the first support member 7. At the time of maintenance, since the block 16 may be removed and the block 16 may be repaired, the operation can be performed relatively easily. Also, replacement is easy. Further, the block 16 can be easily added to an existing mold.

As shown in FIG. 3, a die member 11a having a hole 10a corresponding to a perforated portion 1b of the upper surface portion 5 is formed as follows.
It is fitted into the first support member 7. A discharge passage 9 a communicating with the hole 10 a extends downward and diagonally downward and is opened, and communicates with the scrap can 15.

FIG. 5 is a view similar to FIG. 4, showing another embodiment. Only parts different from FIG. 4 will be described. In this embodiment, the deflecting surface 14a is not a semi-cylindrical surface but is formed in a substantially triangular concave shape. Also in this embodiment, the uppermost scrap S is changed in direction and shifted in position by the deflecting surface 14a.
Is separated from other scrap.

In the above-described embodiment, the present invention has been described with respect to the door trim of an automobile. However, the present invention is not limited to this, and a sheet metal, a resin plate, or a chip can be used. Drilling from below to above includes drilling diagonally upward. The processing on the upper surface of the door trim may be drilling or other processing.

[0017]

According to the present invention, drilling can be performed upward from below, so that a workpiece can be drilled in a normal machining posture. When a curved deflecting surface is used as the scrap receiving surface, the contact area is small when the scrap hits the deflecting surface, the scrap is surely shifted laterally, and the scrap processing is performed stably. In addition, since drilling can be performed in the same mold as that for processing the upper surface of the work, both the upper surface processing and the drilling can be performed simultaneously, and the work process can be shortened, resulting in excellent mass productivity. In particular, in the case where the upper surface is also drilled, since the die can be drilled at a time, productivity is dramatically improved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is an explanatory diagram of a scrap process according to the embodiment of the present invention.

FIG. 5 is an explanatory diagram of a scrap process according to another embodiment of the present invention.

FIG. 6 is an explanatory diagram of a conventional technique.

FIG. 7 is an explanatory diagram of another conventional technique.

FIG. 8 is an explanatory diagram of still another conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door trim 1a Drilled part 1b Drilled part 1c Drilled part 2 Drilling device 3 Upper die 4 Lower die 5 Upper surface part 6 Bending surface part 7 First support member 8 Second support member 9 Drain passage 9a Drain passage 10 Hole 10a Hole 11 Die Member 11a Die Member 12 Punch Member 13 Scrap Receiving Surface 14 Deflection Surface 14a Deflection Surface 15 Scrap Can 16 Block S Scrap

Claims (3)

[Claims] 1. A plate-like member having an upper surface portion sandwiched between a fixed lower die and a movable upper die, and a bent surface portion bent downward from the upper surface portion, with respect to the bent surface portion. A drilling device for drilling upward from below, wherein the lower die supports a first support member for supporting an upper surface portion of the plate-shaped member, and a bent surface portion of the plate-shaped member. And a discharge passage for scrap which is inclined downward is formed between the first support member and the second support member, and a hole is formed in the bent surface portion of the plate-like member. A punch member is disposed below the second support member, and a die member having a hole for receiving the punch member is disposed on the second support member.
The hole of the die member is communicated with the discharge passage, and a scrap receiving surface is formed on the inner surface of the first support member forming the discharge passage, facing the extension direction of the hole of the die member. A plate-shaped member drilling device, wherein an inclined surface in a direction intersecting with an extension direction of the hole is formed on the scrap receiving surface. 2. The plate-piercing device according to claim 1, wherein the inclined surface of the scrap receiving surface is a curved surface. A first support member for supporting an upper surface portion of the plate member, a second die member being provided, an upper die facing the second die member being provided with a second punch member, 3. An apparatus according to claim 1, wherein the upper surface of the member is drilled.