JP5332790B2 - Bending machine - Google Patents

Description

  The present invention relates to an apparatus for bending a workpiece, and more particularly to an apparatus for bending a connector terminal.

  When bending a workpiece, an apparatus including a workpiece conveying device and a die having a punch and a die as one set is used. The mold and the workpiece transfer device are fixed at a predetermined position. Then, the work is conveyed to a position just below the punch of the mold by the work conveying device, the work is set, and the work is bent by colliding the punch with the work. This prior art is described in Patent Document 1 or 2, for example.

  However, in the case of bending a plurality of types of workpieces having the same bending shape (for example, bending angle) but different bending positions, conventionally, after the first type workpiece is processed to a predetermined production amount, the mold is set again. Then, the fixed position of the mold was changed, and the second type workpiece was processed with a predetermined production amount. For this reason, when production is switched to another type of work, a predetermined time is required, resulting in a reduction in production efficiency.

JP 2005-108492 A JP 2008-166014 A

  The present invention has been made in view of the above problems, and its purpose is to change to other types of workpieces when bending a plurality of types of workpieces having the same bending shape (for example, bending angle) but different bending positions. It is to provide a bending apparatus capable of switching production in a short time and having good production efficiency.

The bending apparatus (100) according to the first aspect of the present invention includes:
Bent shape but are the same bending position is a different type of workpiece (W1, W2) you pressurized Engineering bending device (100),
A workpiece conveying device (1), a die (10) in which a punch (2) and a die (4) are combined with each other, and a rail that allows the punch (2) and the die (4) to move simultaneously at the same time (5a) comprising a pedestal (5) to be supported, and a mold moving means (20) for moving the mold (10),
The mold (10) is moved by the mold moving means (20) and set at a predetermined position, and then the workpiece (W1, W2) is punched by the mold (10) by the workpiece transfer device (1). 2), the workpiece (W1, W2) is set by conveying it to just below, and the workpiece (W1, W2) is bent by colliding the punch (2) with the workpiece (W1, W2). To do.

  When the production is switched to another type of work, the bending process is executed after the mold is moved through the rail and set at a predetermined position. By moving the mold through the rail, the mold can be set at a predetermined position in a short time, and production switching to another type of work can be performed in a short time.

  The bending apparatus (100) of the second aspect of the present invention is characterized in that the mold moving means (20) includes a servo motor (9) and a ball screw (12). By using the servo motor (9) and the ball screw (12) as the mold moving means, it is possible to perform highly accurate mold positioning in a short time.

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

In the bending apparatus of 1st Embodiment of this invention, it is a figure showing the state just before the bending process of a 1st workpiece | work begins. In the bending apparatus of 1st Embodiment of this invention, it is a figure showing the state immediately after bending the 1st workpiece | work. In the bending apparatus of 1st Embodiment of this invention, it is a figure showing the state immediately after bending a 2nd workpiece | work. (A) is a top view of a 1st workpiece | work, (b) is a side view of a 1st workpiece | work. (A) is a top view of a 2nd workpiece | work, (b) is a side view of a 2nd workpiece | work.

  First, in the bending apparatus of this invention, the workpiece | work W which is the object of bending is demonstrated. Work W is two types of connector terminals made of metal, and includes a short connector terminal (see FIG. 4) and a long connector terminal (see FIG. 5). The short connector terminal is referred to as a first work W1, and the long connector terminal is referred to as a second work W2. As shown in FIG. 4, the total length of the first workpiece is L1, and the bending position is P1 at a position extending from the right end to the left by a distance L2. As shown in FIG. 5, the entire length of the second workpiece is L3, and the bending position is P2 at a position extending from the right end to the left by a distance L4. L4 is longer than L2.

(First embodiment)
Next, the bending apparatus 100 of 1st Embodiment of this invention is demonstrated. FIG. 1 shows a bending apparatus 100 and a first workpiece W1 according to the first embodiment of the present invention. The bending apparatus 100 includes a workpiece transfer device 1, a workpiece guide 5b, a mold 10 including a punch 2 and a die 4, and a platform 5 that supports the mold 10 via a rail 5a. And a mold moving means 20 for moving the mold 10. A workpiece moving unit 1 a is attached to the workpiece conveying device 1, and the workpiece moving unit 1 a can move up and down with respect to the workpiece conveying device 1. A chuck claw 1a for chucking the workpiece W is disposed at the left end of the workpiece moving means 1a, and the chuck claw 1a is formed to be openable and closable.

  The work guide 5b is fixed to the gantry 5 and has a function of guiding the work W. The mold 10 includes a punch (upper mold) 2, a die (lower mold) 4, a punch floating spring (not shown) disposed therebetween, and a punch holding table 3. The punch 2 is fixed to the punch holding base 3 with bolts (not shown). A projecting portion 2 a that collides with the workpiece W and bends the workpiece W is disposed below the punch 2. A slider 4a is disposed below the die 4 so as to slide on the rail 5a. In the upper part of the die 4, a cavity 4b for forming the workpiece W is formed.

  A shaft 6 extends through the mold 10. The shaft 6 is assembled to the mold 10 so as to be slidable with respect to the punch 2 and the die 4. A male screw is formed on the upper portion of the shaft 6, and a nut 6 a is screwed onto the male screw, and a detent (not shown) is installed on the nut 6 a. Due to the presence of the punch floating spring, the lower surface of the nut 6 a is always in contact with the upper surface 3 a of the punch holding table 3. The lower part of the shaft 6 is formed with a male screw in the same manner as the upper part, and nuts 6b and 6c are screwed into the male screw, and a detent (not shown) is installed on the nuts 6b and 6c. .

  The shaft slider 7 is disposed in a state where a part of the nut 6b is sandwiched between the nuts 6b and 6c. The shaft slider 7 includes an upper plate portion 7b, and a groove portion 7a is formed in the upper plate portion 7b. The shaft 6 extends through the groove portion 7a, and the nuts 6b and 6c are assembled to the shaft 6 so that the nuts 6b and 6c sandwich the upper plate portion 7b through a slight gap. Thereby, nut 6b, 6c can slide the upper surface and lower surface of the upper board part 7b.

  The shaft slider 7 is connected to a rod 8 at a lower portion thereof, and the rod 8 is connected to punch driving means (not shown) that enables vertical movement. The shaft slider 7 is disposed between the left wall 5c and the right wall 5d provided in the gantry 5 so as to be slidable in the vertical direction. The punch driving means (not shown) includes a servo motor (not shown) and a ball screw (not shown).

  On the other hand, the mold moving means 20 includes a joint 13, a ball screw 12, a pulley belt 11, and a servo motor 9.

(First workpiece machining method)
Next, a method for processing the first workpiece W1 will be described with reference to FIGS.

  FIG. 1 is a diagram illustrating a state (referred to as a “previous state”) immediately before the bending process of the bending apparatus 100 according to the first embodiment starts. The mold 10 is moved by the mold moving means 20 and set at a predetermined position on the rail 5 a of the gantry 5. In a state before the bending process is started (referred to as an initial state), the punch 2 and the punch holding base 3 are positioned above the die 4 by a certain distance from the immediately preceding state by the punch floating spring. For this reason, in the initial state, a sufficient space is provided between the punch 2 and the die 4 so that the workpiece W is carried into the cavity 4b from the right direction.

  In this state, the workpiece moving means 1a receives the first workpiece W1 from the workpiece conveying means (not shown) at the upper position, then moves downward, and conveys the first workpiece W1 to just below the punch 2. It is placed and set on the work guide 5b. When the punch driving means (not shown) is turned on in the workpiece set state, the rod 8 and the shaft slider 7 move downward, and accordingly, the shaft 6 and the nut 6a move downward. When the nut 6a moves downward, the punch holding base 3 and the punch 2 move downward against the force of the punch floating spring, descend to the state shown in FIG. The protruding portion 2a collides with the work W1, and the first work W1 is bent downward. When the lower surface 2b of the punch 2 comes into contact with the upper surface 4c of the die 4, the bending process ends. This end state is represented in FIG.

  When the bending process is completed, the punch driving means (not shown) is turned off. Then, the punch holding base 3 and the punch 2 are pushed upward by the force of the punch floating spring. Then, the nut 6a, the shaft 6, the nuts 6b and 6c, the shaft slider 7 and the rod 8 are lifted upward. As a result, a sufficient space is prepared between the punch 2 and the die 4 so that the workpiece W can be carried out from the cavity 4b in the right direction.

  In this state, the workpiece moving means 1a unloads the first workpiece W1 from the cavity 4b to the right at the lower position, moves it upward, and receives the first workpiece W1 by the workpiece conveying means (not shown). hand over. After that, the above process is repeated. The above is the method for processing the first workpiece W1.

(Second workpiece machining method)
Next, a method for processing the second workpiece W2 will be described with reference to FIG.

  When the bending production of the predetermined number of first workpieces W1 is completed, the servo motor 9 is turned on. As a result, the rotation of the servo motor 9 is transmitted to the pulley belt 11 and the ball screw 12, and the joint 13 is moved in the left direction. The mold 10 connected to the joint 13 and the shaft 6 are also moved in the left direction. Are set at predetermined positions. Thereby, the initial state of the bending process of the second workpiece W2 is set. Since the bending position P2 of the second workpiece W2 is located on the left side in the drawing with respect to the bending position P1 of the first workpiece W1, the mold 10 is moved in the left direction. Since the subsequent machining method is the same as the bending process of the first workpiece W1, the description thereof is omitted.

(Second Embodiment)
In the first embodiment, the mold is installed on the rail, and the mold is moved when the production is performed with the type of the workpiece switched, to cope with the production switching. Contrary to this, by using a bending apparatus 200 (second embodiment) having a configuration in which the workpiece transfer device is installed on the rail and the mold is fixed, the same production switching can be handled. But of course it is possible. If the explanation of the first embodiment is read, the detailed structure of the apparatus 200 of the second embodiment should be easily understood.

  As described above, when bending multiple types of workpieces that have the same bending shape (for example, bending angle) but different bending positions, production switching to other types of workpieces can be performed in a short time. It is possible to provide a good bending apparatus.

DESCRIPTION OF SYMBOLS 100 Bending apparatus of 1st Embodiment 200 Bending apparatus of 2nd Embodiment 10 Mold 20 Mold moving means

Claims (3)

Bent shape but are the same bending position is a different type of workpiece (W1, W2) you pressurized Engineering bending device (100),
A workpiece conveying device (1), a die (10) in which a punch (2) and a die (4) are combined with each other, and a rail that allows the punch (2) and the die (4) to move simultaneously at the same time (5a) comprising a pedestal (5) to be supported, and a mold moving means (20) for moving the mold (10),
The mold (10) is moved by the mold moving means (20) and set at a predetermined position, and then the workpiece (W1, W2) is punched by the mold (10) by the workpiece transfer device (1). 2), the workpiece (W1, W2) is set by conveying it to just below, and the workpiece (W1, W2) is bent by colliding the punch (2) with the workpiece (W1, W2). Bending device (100).   The bending apparatus (100) according to claim 1, wherein the mold moving means (20) comprises a servo motor (9) and a ball screw (12). A shaft (6) extends through the mold (10), and the shaft (6) is slidable with respect to the punch (2) and the die (4). It is assembled to
3. A process of bending the workpiece (W1, W2) by causing the punch (2) to collide with the workpiece (W1, W2) by moving the shaft (6) downward. The bending apparatus (100) described in 1.

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