JP2000094058A - Pierce burring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain high productivity, and to correctly deal with the production situation of the production line with respect to a pierce burring device to expand a hole flange at plural places of a plate stock. SOLUTION: A pierce burring device to expand a hole flange at plural plates of a stock plate 35, is provided with a press body 21 in which dies 45-55 opposite to each other are arranged in a row at prescribed intervals, supporting mechanisms 73 which are arranged between the dies 45-55 opposite to each other and support the stock plate 35, moving mechanisms which are connected to the supporting mechanisms 73 and move the stock plate 35 to a prescribed working position, and a carrying mechanism 65 to carry the stock plate 35 supported by the supporting mechanism 73 to the adjacent supporting mechanism 73, and the moving mechanism has an evacuation function to move the stock plate 35 supported by the supporting mechanism 73 outside the pressing area of the dies 45-55.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piercing burring apparatus for forming a hole flange at a plurality of locations of a sheet metal material.

[0002]

2. Description of the Related Art Conventionally, a piercing burring apparatus for forming a hole flange overhang on a sheet metal material has been disclosed in Japanese Unexamined Patent Publication No.
What is disclosed in -39450 is known.
In this type of piercing burring apparatus, as shown in FIG. 13, the press body 1 includes an upper die holder 2 attached to a slide that reciprocates up and down, and a lower die holder 3 attached to a bolster. I have.

An upper die 4 is fixed to the upper die holder 2 at a plurality of positions, and a lower die 5 is fixed to the lower die holder 3 at a position facing the upper die 4. Upper mold 4
Are upper piercing punch 4a and upper burring die 4
b, and the lower die 5 includes a lower die burring punch 5a and a lower die pad 5b.

[0004] A stage 7 on which a sheet metal material 6 is placed is supported on the lower mold holder 3 via guide pins 8 and springs 9. This type of piercing burring apparatus is, for example, a baffle plate 10 as shown in FIG.
Of the burring hole 10a. The baffle plate 10 is a part for partitioning an internal space of a muffler mounted on a vehicle or the like.
0 has a burring hole 10a for inserting an exhaust pipe.
Are formed at a plurality of locations.

The baffle plate 10 has a reinforcing embossment 10c formed between the burring holes 10a, and the outer edge of the baffle plate 10 has a flange 10b.
Are formed. Generally, the formation position of the burring hole 10a in the baffle plate 10 is
The diameter of the burring hole 10a formed at each position is different depending on the type of the baffle plate 10, although it is the same regardless of the type of the baffle plate 10.

There is also a baffle plate 10 in which burring holes 10a are formed only at four locations, as shown in FIG. For this reason, there are several hundred types of baffle plates 10 depending on the hole diameter and the number of burring holes 10a formed. In the piercing burring device described above,
As shown below, the sheet metal material 6 for the baffle plate 10
A burring hole 10a is formed in the hole.

[0007] A flange and an emboss are formed in advance on the sheet metal material 6 forming the burring hole 10a. First, as shown in FIG. 13, a plurality of upper dies 4 and lower dies 5 corresponding to predetermined hole diameters are fixed to the press body 1, and thereafter, the sheet metal material 6 is placed on the stage 7. You.

Next, by operating the press body 1, the scrap 6a is separated and a plurality of burring holes 1 are formed.
0 a is formed on the sheet metal material 6.

[0009]

However, in such a conventional piercing burring apparatus, the formation of the burring holes 10a of the baffle plate 10 is performed by a plurality of upper dies 4,
Since the press body 1 to which the lower die 5 is fixed is operated, when manufacturing different types of baffle plates 10, the upper die 4 and the lower die 5 must be replaced each time. there were.

At this time, the replacement work of the upper mold 4 and the lower mold 5 requires 1
If it takes 0 to 15 minutes and the replacement work occurs frequently, several tens of percent of the press work per day must be spent for replacing the upper mold 4 and the lower mold 5. However, there is a problem that the operating rate of the device is reduced and the production efficiency is reduced. Further, in order to reduce the number of times of replacing the upper mold 4 and the lower mold 5, it is necessary to manufacture a large number of baffle plates 10 of the same type, and those that exceed the number requested from the production line are in stock. There is a problem that the production cost increases as the stock increases.

The present invention has been made in order to solve the conventional problems, and has as its object to provide a piercing burring apparatus which can maintain high productivity and can appropriately cope with the production situation of a production line. .

[0012]

According to a first aspect of the present invention, there is provided a piercing burring apparatus for forming piercing flanges at a plurality of positions of a sheet metal material, wherein dies facing each other are arranged in a line at predetermined intervals. Press body to be installed, and is disposed between each of the opposite molds,
A supporting mechanism that supports the sheet metal material, a moving mechanism that is connected to each of the supporting mechanisms and moves the sheet metal material to a predetermined processing position, and the sheet metal material that is supported by the supporting mechanism, And a transfer mechanism for transferring the sheet metal material supported by the support mechanism to an outside of a press area of the mold.

(Operation) In the piercing burring apparatus of the first aspect, the transport mechanism sequentially transports the sheet metal material to the support mechanism provided for each of the dies arranged in a row in the press body. A moving mechanism connected to each of the support mechanisms moves the sheet metal material supported by the support mechanism to a predetermined position for each mold.

[0014] When the sheet metal material does not require a burring hole formed by pressing the metal mold, the sheet metal material is evacuated to the outside of the press area by a retreat function. After this,
The press body is operated, and one burring hole is formed in the sheet metal material located on the mold. Next, the transport mechanism sequentially transports the sheet metal material to the adjacent support mechanism, and the press body is operated again.

In this way, the sheet metal material is sequentially conveyed,
By pressing, burring holes are formed one by one in the sheet metal material. Then, burring holes having a predetermined hole diameter are formed at a plurality of positions in a required number of sheet metal materials without replacing the mold. The retraction of the sheet metal material outside the press area is also performed when temporarily evacuating another sheet metal material when burring holes having the same hole diameter are formed at a plurality of locations of the sheet metal material.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an embodiment (corresponding to claim 1) of a piercing burring apparatus of the present invention. The piercing burring device of this embodiment is used, for example, for manufacturing a baffle plate or the like for partitioning an internal space of a muffler mounted on a vehicle or the like.

In the figure, a rectangular parallelepiped bed 25 for supporting the entire apparatus on a foundation 23 is provided on a press body 21.
The longitudinal direction is arranged along the lateral direction W. Support rods 27 are provided upright at the four corners of the bed 25, and a hydraulic press 29 is fixed above the support rods 27. Below the hydraulic press 29, a slide 31 on a rectangular parallelepiped that reciprocates up and down in conjunction with the operation of the hydraulic press 29 is disposed along the horizontal direction W. An upper mold holder 32 is attached.

A bolster 33 is fixed on the bed 25 at a position corresponding to the slide 31, and a lower mold holder 34 for attaching a lower mold is mounted on the bolster 33. On both sides of the press body 21 in the lateral direction W, a disstacker 37 for stacking the sheet metal material 35 before processing and a sheet metal material 35 after processing
And a carry-out conveyor 39 that carries out the work from each other.

The press body 21 includes a disturker 3
7, the idle station 41, the mold 43, and the molds 45, 47, 49, 51, 53, 55 are arranged at an arrangement interval A in this order from the side of the destacker 37. Have been. Idol station 4
Reference numeral 1 denotes a sheet metal material 3 taken out of the destacker 37
5 is a place where temporary storage is performed.

The mold 43 includes an upper mold 43a and a lower mold 43b.
It consists of. In this embodiment, the sheet metal material 35 is pressed by the upper die 43a and the lower die 43b, whereby a flange is formed on the edge of the sheet metal material 35, and at the same time, a concavo-convex emboss is formed.

Each of the molds 45 to 55 includes an upper mold 45a,
47a, 49a, 51a, 53a, 55a and lower dies 45b, 47b, 49b, 51b, 53b, 55b. The sheet metal material 35 includes upper dies 45a to 55
The burring holes are formed at predetermined positions one by one by being pressed by a and the lower dies 45b to 55b.

The upper dies 45a to 55a and the lower dies 45
The dies 45 to 55 constituted by b to 55b form burring holes having different hole diameters. As shown in FIG. 2, the upper dies 45a to 55a include an upper pierce punch 57 and an upper burring die 59, and the lower dies 45b to 55b have a lower burring punch 61.
And a lower die pad 63.

Further, as shown in FIG. 3, a transfer mechanism 65 extending in the width direction W is disposed on the back surface 21a side of the press body 21. The transport mechanism 65 includes drive units 65a and 65b on both sides of the press body 21.
A long movable shaft 67 that extends on the bolster 33 is disposed between a and 65b.

The drive section 65a has a control valve 65c connected to a vacuum pump (not shown). A rod-shaped hand 69 extending toward the front surface 21b of the press body 21 is attached to the movable shaft 67 at a plurality of locations at predetermined intervals. Nine hands 69 are attached between the destacker 37 and the carry-out conveyor 39 at the same interval as the arrangement interval A of the dies 43, 45 to 55.

Each hand 69 has a sucker-shaped suction portion 71 for sucking the sheet metal material 35 by negative pressure. Each suction unit 71 is connected to a control valve 65c via a vacuum tube 67a. The transport mechanism 65 reciprocates the movable shaft 67 in the width direction W and, at the same time, reciprocates the hand 69 in the vertical direction, controls the control valve 65c to perform negative pressure control on the suction unit 71, and thereby controls the sheet metal material 35. It has a function of sucking, lifting upward, and transporting it to a predetermined place.

Each hand 69 is provided between the destacker 37 and the idle station 41 and between the mold 43 and the mold to prevent the molds 43 and 45 to 55 from coming into contact with each other except during the transfer of the sheet metal material 35. 45, between the dies 45 to 55, and between the dies 55 and the carry-out conveyor 39 (initial position). As shown in FIG. 4, a nest 73 (corresponding to a support mechanism) for supporting the sheet metal material 35 is disposed between each of the upper dies 45a to 55a and the lower dies 45b to 55b.

The nest 73 is formed in a U-shape that supports three edges of the sheet metal material 35. Each nest 73
It is connected to an XY driving mechanism 77 (corresponding to a moving mechanism) via a spring 75. XY drive mechanism 77
Has a drive unit 77a composed of a stepping motor, a ball screw, a gear, and the like, not shown.

The XY drive mechanism 77 has a function of freely moving the sheet metal material 35 supported by the nest 73 around the mold. It has a function to evacuate outside. Nest 73
Except when pressing and retracting the sheet metal material 35, the lower mold 45 is used.
b to the initial position on 55b.

As shown in FIG. 5, when the sheet metal material 35 is pressed, the nest 73 moves downward with the movement of the sheet metal material 35 pressed by the upper dies 45a to 55a. Nest 73
As a result, the spring 75 is pressed and contracted.

Then, as shown in FIG. 4, after the sheet metal material 35 is pressed, the nest 73 is returned to the initial position as the upper dies 45a to 55a are raised by the restoring force of the pressed spring 75. FIG. 6 is a control block diagram of the piercing burring apparatus of the present embodiment. In the present embodiment, a control mechanism 79 such as a CPU controls all operations of the present apparatus.

The control mechanism 79 determines the number and diameter of the burring holes formed in the sheet metal material 35 based on the production information sent from the production line 81, and presses the main body 21, the destacker 37, the unloading conveyor 39, Transport mechanism 65, X
A function of controlling the Y drive mechanism 77; For this reason, in the present piercing burring apparatus, it is possible to press the sheet metal material 35 in an amount required by the production line, and it is possible to incorporate (inline) the piercing burring apparatus into the production line process. .

In the above-described piercing burring apparatus, the sheet metal material 35 is pressed as described below. That is, first, as shown in FIG. 7, the hand 69 and the nest 73 wait until the production information is received from the production line.
Stopped at the initial position. Upon receiving the production information, the transport mechanism 65 moves the movable shaft 67 to the side of the destacker 37 as shown in FIG.
Is moved downward, and the suction unit 71 is brought into contact with the sheet metal material 35 of the destacker 37.

Next, the transport mechanism 65 opens the control valve 65c, and sucks the sheet metal material 35 to the suction part 71 located on the destacker 37. Then, the transport mechanism 65 moves the hand 69 upward, and moves the movable shaft 67 toward the unloading conveyor 39 by the arrangement interval A.

Next, the transport mechanism 65 closes the control valve 65c after moving the hand 69 down again. Then, the sheet metal material 35 that has been sucked by the suction unit 71 is placed on the idle station 41. XY drive mechanism 77
Keeps the state of stopping at the initial position.

Next, as shown in FIG.
Performs the above-described operation again, and conveys the sheet metal material 35 of the idling station 41 onto the lower mold 43b, and at the same time, conveys another sheet metal material 35 from the destacker 37 to the idling station 41. Thereafter, the press body 21 operates, and the sheet metal material 35 on the lower die 43b is pressed to form a flange and an emboss.

Next, as shown in FIG.
Operates again to convey the sheet metal material 35 on the destacker 37 and the idling station 41 to the idling station 41 and the lower mold 43b, respectively. Further, the sheet metal material 35 on the lower mold 43b is
It is transported to the upper nest 73 and is supported by the nest 73.

Next, the XY drive mechanism 77 on the lower mold 45b
Operates to move the sheet metal material 35 to a predetermined position.
Then, the press body 21 operates, and the sheet metal material 35 on the nest 73 is pressed to form a burring hole 35a having a predetermined hole diameter at a predetermined position of the sheet metal material. at the same time,
The sheet metal material 35 on the lower die 43b is pressed to form a flange and an emboss.

After the operation of the press body 21, the XY drive mechanism 77 operates to return the nest 73 on the lower die 43b to the initial position. Next, as shown in FIG.
5 carries out the above-described operation to convey the sheet metal material 35 to the carry-out conveyor 39 side.

At this time, the sheet metal material 35 supported by the nest 73 on the lower mold 47b is
When the processing of 7a is not performed, the XY drive mechanism 77
The nest 73 is retracted outside the press area of the mold 47. The sheet metal material 3 supported by the nest 73 on the lower die 45b
5 is moved to a predetermined position by the XY drive mechanism 77.

Thereafter, the press body 21 operates, and the sheet metal material 35 supported by the nest 73 on the lower die 45b is pressed to form a burring hole 35a. After the operation of the press body 21, the XY drive mechanism 77 operates, and the nest 73 retracted is returned to the initial position. Next, as shown in FIG. 12, the transport mechanism 65 repeats the above-described operation to sequentially transport the sheet metal materials 35 to the unloading conveyor 39 side.

Thereafter, each of the XY driving mechanisms 77 moves the nest 73 to a predetermined position, and the press body 21 operates to press the sheet metal material 35. Further, burring holes 35a having the same hole diameter are provided at a plurality of positions of the sheet metal material 35.
Is formed, all other sheet metal materials 35 are evacuated to the evacuating area. In this case, the transport mechanism 65 does not transport the sheet metal material 35 from the destacker 37 and the idle station 41, presses the die 43 empty, and presses the die 4
The extra sheet metal material 35 is prevented from being conveyed to 5-55.

In this manner, the sheet metal material 35 is repeatedly transferred and pressed, and the sheet metal material 35 (completed product) transferred to the nest 73 on the lower die 55b is transferred to the unloading conveyor 39 by the transfer mechanism 65. , Sent to the next process of the production line. Then, the sheet metal material 35 in a quantity required by the production line is pressed. In the piercing burring apparatus configured as described above, the press body 21 is provided with a plurality of dies 45 to 55 in a line, and a nest 73 and a nest 73 for supporting the sheet metal material 35 are provided for each of the dies 45 to 55. And an XY drive mechanism 77 for moving the sheet metal material 35, and a transport mechanism 65 for sequentially transporting the sheet metal material 35 to each nest 73. Thus, the burring holes 35a are formed one by one while sequentially transporting the sheet metal material 35 sequentially. Thus, a plurality of types of baffle plates can be manufactured.

For this reason, it is not necessary to replace the mold for each type of baffle plate, which has been conventionally performed, and the operation rate of the press body 21 can be greatly improved, and the production efficiency can be greatly improved. Can be. Further, the XY drive mechanism 77 has a retracting function, and the nest 73 is connected to the molds 45 to 5.
5 can be evacuated outside the press area.
If the burring hole 35a formed by pressing the mold is unnecessary, the sheet metal material 35 can be retracted from the mold.

As a result, the press body 21 can be continuously operated without stopping, and the productivity can be further improved. Since a plurality of types of baffle plates can be manufactured without replacing the molds 45 to 55, a required number of types of baffle plates required by the production line can be manufactured.

Therefore, the present piercing burring apparatus can be incorporated into a production line process (inlined), and the stock can be reduced to zero. In the embodiment described above, the press body 21 is provided with the dies 45 to 55.
Have been described in six places, but the present invention is not limited to this embodiment, and the number of dies corresponding to the type of the hole diameter of the burring hole 35a formed by the sheet metal material 35 is arranged. Just set it.

In the above embodiment, the sheet metal material 3
5, an example in which a baffle plate is formed by pressing is described. However, the present invention is not limited to such an embodiment. What is necessary is a sheet metal material 35 in which burring holes 35a are formed at a plurality of locations. Press processing can be performed even with a simple sheet metal material 35.

[0047]

According to the piercing burring apparatus of the first aspect,
A plurality of dies are arranged in a line on the press body, a sheet metal material is supported for each mold, and a support mechanism and a moving mechanism for moving are provided.A transport mechanism for sequentially transporting the sheet metal material to each support mechanism is provided. Since the sheet metal material is sequentially transferred to each mold by the transfer mechanism, hole flange overhanging is performed one by one, and if hole flange overhanging is unnecessary, the sheet metal material is evacuated outside the press area. And a plurality of types of products can be manufactured.

[0048] For this reason, by eliminating the necessity of exchanging dies, which has conventionally been performed for each type of product, continuous operation of the press body becomes possible, and the operation rate can be greatly improved. Production efficiency can be significantly improved. Further, since a plurality of types of products can be manufactured without replacing the mold, it is possible to manufacture a required number of types of products required by the production line.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a piercing burring device of the present invention.

FIG. 2 is a sectional view showing details of an upper die and a lower die for a burring hole.

FIG. 3 is a top view showing a lower part of the press body.

FIG. 4 is a sectional view showing details of a nest and an XY drive mechanism.

FIG. 5 is a sectional view showing details of a nest and an XY drive mechanism.

FIG. 6 is a control block diagram of the piercing burring apparatus of the present invention.

FIG. 7 is a top view showing a state where press working of a sheet metal material is started.

FIG. 8 is a top view showing a state in which a sheet metal material has been transported from a destacker to an idle station.

FIG. 9 is a top view showing a state in which an edge of a sheet metal material is subjected to flange processing and embossing.

FIG. 10 is a top view showing a state in which a burring hole is formed in a sheet metal material.

FIG. 11 is a top view showing a state in which the sheet metal material is retracted outside the press area by the XY drive mechanism.

FIG. 12 is a top view showing a state in which burring holes are sequentially formed in a sheet metal material.

FIG. 13 is a sectional view showing a conventional piercing burring apparatus.

FIG. 14 is an explanatory diagram showing a baffle plate.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 21 Press body 21a Back 21b Front 23 Base 25 Bed 27 Support rod 29 Hydraulic press 31 Slide 32 Upper die holder 33 Bolster 34 Lower die holder 35 Sheet metal material 37 Destacker 39 Carry-out conveyor 41 Idle station 43 Die 43a Upper die 43b Lower Molds 45, 47, 49, 51, 53, 55 Molds 45a, 47a, 49a, 51a, 53a, 55a Upper dies 45b, 47b, 49b, 51b, 53b, 55b Lower dies 57 Upper pierce punch 59 Upper burring dies Reference Signs List 61 lower burring punch 63 lower pad 65 transfer mechanism 65a, 65b drive unit 67 movable shaft 69 hand 71 suction unit 73 nest (support mechanism) 75 spring 77 XY drive mechanism (movement mechanism) 77a drive unit 79 control mechanism 81 Production lie A mounting pitch W laterally

Claims (1)

[Claims] 1. A piercing burring apparatus for forming a hole flange at a plurality of positions of a sheet metal material (35), wherein a plurality of dies (45 to 55) opposed to each other are arranged in a line at a predetermined interval. A support mechanism (7) disposed between the main body (21) and each of the opposite molds (45 to 55) to support the sheet metal material (35).
3) and a moving mechanism (7) connected to each of the support mechanisms (73) to move the sheet metal material (35) to a predetermined processing position.
7), and the sheet metal material (3) supported by the support mechanism (73).
5) a transport mechanism (65) for transporting the sheet metal material (35) supported by the support mechanism (73) to the adjacent support mechanism (73). The mold (45-5
5) A piercing burring device, which is provided with a retracting function of moving out of the press area.