JPH0686830U - Busbar manufacturing equipment - Google Patents

Abstract

(57) [Summary] [Object] To provide a busbar manufacturing apparatus capable of manufacturing a busbar having a shape similar to a basic shape with the same die as a busbar having a basic shape. [Structure] A press machine is installed along a conveying path for intermittently feeding a metal plate 10 for a bus bar, and a holder 5 which is vertically moved of the press machine is provided with a required interval in the conveying direction and a basic shape on an upstream side. The cutting blade 6a for punching is attached so as to protrude from the holder, and the cutting blade 6 for a similar shape is provided downstream thereof.
b and curved blade 6d are attached and retracted freely from the holder,
Of these cutting blades and curved blades for similar shapes, the required cutting blades and curved blades are projected from the holder and punched into a basic shape. It can be manufactured with the same device as the shaped bus bar.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bus bar manufacturing apparatus that is used by being housed inside a branch connection box that branches and connects circuits in a vehicle wire harness.

[0002]

[Prior art]

 A branch junction box used to branch connect a wire harness for automobiles to various electrical components is to connect the branch connection points in one place to connect the wiring reasonably and economically. Various types of harnesses have been developed as the harness density increases. A junction block or the like is housed in the branch connection box, and a bus bar is housed inside the junction block or the like.

The bus bar has a shape provided with a required circuit by punching out a conductive metal flat plate. As shown in FIGS. 6A and 6B, the bus bar 1 is a metal plate for a bus bar that is intermittently fed. A tab 1a having a predetermined shape is formed by cutting a desired shape with a cutting blade protruding from a holder that is moved up and down by a press machine, and then bending the required location with a curved blade. Cutting blades and curved blades are fixed to the holder, and are used as a dedicated mold for the bus bar 1. For example, a curved blade projected from a holder after being cut into a desired shape by the cutting blade protruding from the holder. Bent into the required shape.

[0004]

[Problems to be solved by the device]

 However, the shape of the busbar is similar to that of the busbar 2 shown in FIGS. 7A and 7B, and is similar to that of the above-mentioned busbar 1 except that the tabs 1a and 2a are cut and bent only slightly. Even in such a case, a dedicated mold for the bus bar 2 must be laid, which requires mold manufacturing costs, mold management man-hours, mold replacement time, and the like, which causes a problem of high cost.

Usually, the shape of the busbar changes little by little depending on the presence or absence of optional equipment. Therefore, a large number of similar-shaped busbars are required for the basic shape busbar without the optional equipment, and the cutting blade and Many molds with fixed curved blades are required.

The present invention has been made in order to solve the above problem, and provides a busbar manufacturing apparatus capable of manufacturing a busbar having a shape similar to the basic shape with the same mold as the busbar having the basic shape. It is intended.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention installs a press machine along a conveying path for intermittently feeding a metal plate for a bus bar, and a holder which is moved up and down of the press machine is provided with a required space in the conveying direction. The present invention provides a busbar manufacturing apparatus characterized in that a cutting blade and a curved blade are attached, and among the cutting blade and the curved blade, a required cutting blade and the curved blade are attached to the holder so as to be retractable.

A cutting edge for punching a basic shape is attached to the holder so as to protrude from the holder on the upstream side with a required space in the transport direction, and a cutting edge and a curved edge for similar shapes are provided downstream of the holder. Attach the blade so that it can be retracted from the holder, and cut a portion of the busbar metal plate punched into the basic shape by protruding the required cutting blade and curved blade out of the holder from these similar shaped and curved blades. And / or by bending it, a bus bar of similar shape can be manufactured with the same device as a bus bar of basic shape.

In the press machine of the above-mentioned bus bar manufacturing apparatus, a cutting blade for punching the basic shape is fixed to the upper die holder from the lower surface of the holder and protrudes, and a cutting blade and a curved blade for the similar shape are formed. Is attached so that it can be moved up and down by drive means, and the required cutting blade and curved blade are projected downward by a required distance. The lower die holder is fixed, and the cutting blade and the curved blade are provided on the upper surface of the lower die holder so as to face the cutting blade and the curved blade of the upper die holder, and the cutting passage and the curved blade are provided in the conveyance path between the upper and lower holders. It is configured to hold the bus bar and move intermittently. Alternatively, the lower die holder may be provided with a groove at a position facing the cutting blade and the curved blade of the upper die holder, and the bus bar may be intermittently moved along the upper surface of the lower die holder.

[0010]

[Action]

 According to the present invention, when manufacturing a busbar of a basic shape, the metal plate for a busbar that is intermittently fed by the cutting blade and the curved blade fixed to the holder is sequentially cut and bent to form the basic shape. Manufacture busbars. On the other hand, when manufacturing similar shaped busbars, in addition to the fixed cutting blades and curved blades, only the cutting blades and curved blades necessary for manufacturing similar shaped busbars are projected from the holder, The blades are used to sequentially cut and bend the intermittently fed metal sheet for busbars to manufacture busbars of similar shape. In this way, a busbar with a similar shape to a busbar with a basic shape can be manufactured with the same manufacturing equipment by simply protruding and retracting the required cutting edge and curved blade for forming a shape different from the basic shape busbar from the holder. You can

[0011]

【Example】

 Hereinafter, the present invention will be described in detail with reference to illustrated embodiments. As shown in FIG. 1, the upper die holder 5 that is vertically moved by the cylinder 4 of the press machine sequentially cuts and bends the bus bar metal plate 10 that is intermittently fed from left to right in the figure. Upper cutting blades 6a, 6b and upper curved blades 6c, 6d are provided. The holder 5 and the upper cutting blades 6a and 6b and the upper bending blades 6c and 6d constitute an upper mold.

The lower die holder 7 facing the upper die holder 5 is fixed, and the lower cutting blades 8a and 8b and the lower bending blade 8c corresponding to the upper cutting blades 6a and 6b and the upper bending blades 6c and 6d are fixed. 8d is fixed to the holder 7. The holder 7, the lower cutting blades 8a and 8b, and the lower curved blades 8c and 8d constitute a lower mold. The upper cutting blades 6a and the upper curved blades 6c are fixed blades and project downward from the holder 5, while the upper cutting blades 6b and the upper curved blades 6c are movable blades, and only in the case of forming a similar-shaped bus bar, If necessary, it is projected and retracted and is projected downward so that the busbar metal plate can be cut and bent.

That is, the cutting blades 6a and 8a separate the tab 1a of the bus bar 1 having the basic shape shown in FIG. 6 in the expanded state as shown in FIG. The cutting blades 6b and 8b cut the tab 1a of the busbar 1 having a basic shape cut by the cutting blades 6a and 8a into two tabs 2a of the busbar 2 having a similar shape. That is, as shown in FIG. 3 (A), the tab 1a of the bus bar 1 of FIG. 2 is cut at a predetermined length L to form a cut surface 2b at one end (see hatching a), and FIG. As shown in (B), while the cut surface 2c is formed at the other end (see hatching b), as shown in FIG. 3 (C), a slit slit 2d is formed at an intermediate portion in the width direction (see hatching c). ). The above-described series of blanking steps can be performed in three steps using the three types of cutting blades 6b and 8b, and can also be performed in one step with one type of cutting blades 6b and 8b.

The curved blades 6c and 8c are the tab 1a of the busbar 1 having a basic shape and the tab 2a of the busbar 2 having a similar shape, which are divided by the cutting blades 6a and 8a and the cutting blades 6b and 8b, respectively, as shown in FIG. And, as shown in FIG. 7 (B), it is bent and divided into L-shapes. The bending process may be performed in two steps of preliminary bending and main bending.

As shown in FIG. 4, the cutting blades 6b and the curved blades 6d provided so as to be retractable are specifically fixed to the holder 5 with the unit cases 12 of the respective cutting blades 6b and the curved blades 6d. In each unit case 12, the cutting blades 6b and the curved blades 6d are supported so as to be retractable at a retracted position shown by a solid line and a projecting position shown by a chain double-dashed line, and are biased to the retracted position by a spring 13. Has been done. Each of the cutting blades 6b and the curved blades 6d is set to have the same height as the fixed cutting blades 6a and the curved blades 6c at the protruding position.

As shown in FIG. 5, each unit case 12 is provided with a slide cam 15 which is slid by a disc cam 14 which is rotated by an actuator, and an inclined surface 15 a of the slide cam 15 has the cutting edge. 6b and the sloped surface 6e of the curved blade 6d. Therefore, when the slide cam 15 is slid to the left in the figure by the rotation of the disc cam 14 toward the large diameter side, the slope 15a presses the slope 6e against the biasing force of the spring 13 to cause the disconnection. The blade 6b and the curved blade 6d are projected to the projecting position. When the disc cam 14 rotates toward the smaller diameter side, the urging force of the spring 13 causes the cutting blades and the curved blades 6b and 6d to be retracted into the retracted position, and at the same time, the slope 6e presses the slope 15a, so that the slide cam is moved. 15 will slide to the right in the figure.

In the busbar manufacturing apparatus having the above-described configuration, when manufacturing the busbar 1 having a basic shape, the cutting blade 6b and the curved blade 6d are immersed and the fixed cutting blade 6a and the curved blade 6c are projected. There is. In the above state, when the holder 5 is moved up and down by the cylinder 4 while intermittently feeding the busbar metal plate 10, first, the tabs 1a of the basic shape busbar 1 are expanded by the fixed cutting blades 6a and 8a. After being cut and passed through the next cutting blades 6b and 8b (since the cutting blade 6b is immersed, it cannot be cut.) The tabs 1a are bent by the bending blades 6c and 8c, and the next bending blade 6d is cut. , 8d (since the curved blade 6d is immersed, it cannot be bent separately), and the bus bar 1 having a basic shape is manufactured.

On the other hand, when manufacturing the bus bar 2 having a similar shape, the cutting blade 6b is projected, but the curved blade 6d is left depressed. In this state, when the holder 5 is moved up and down by the cylinder 4 while intermittently feeding the busbar metal plate 10, first, the tabs 2a of the similar shape of the busbar 2 are fixed by the fixed cutting blades 6a and 8a. Although it is cut into the same shape as the tab 1a of the bus bar 1 in the expanded state, the tabs 2a of the bus bar 2 having a similar shape are manufactured by the following cutting blades 6b and 8b as shown in FIGS. 3 (A) to 3 (C). As shown in FIG. 3 (D), the two tabs 2a are bent and divided by the next curved blade 6c, and when they pass through the next curved blades 6d and 8d (since the cutting blade 6d is immersed, It cannot be bent separately.), And a bus bar 2 having a similar shape is manufactured.

In this way, the bus bar 1 having a basic shape and the bus bar 2 having a similar shape can be manufactured by using the same mold by merely projecting and retracting the predetermined cutting blade 6b and the curved blade 6d from the holder 5. .

In the above-mentioned embodiment, the curved blade 6c having the basic shape is fixed to the holder 5 so as to be projected. However, the curved blade 6c having the basic shape is also attached to the holder so as to be retractable so as to manufacture a bus bar having a similar shape. If the curved blade 6c is not desired to project at times, the curved blade 6c may be left in a retracted state. Further, in the above embodiment, only the place where the tab 1a of the bus bar 1 is the tab 2a of the bus bar 2 having a similar shape has been described, but it goes without saying that a large number of places can be similarly formed in one bus bar. Yes.

Further, in the above-described embodiment, the cutting blade and the curved blade are also provided to face the lower die holder 7 side, but the cutting blade and the curved blade are not provided to the lower die holder 7 side. Alternatively, a groove or a recess into which the cutting blade and the curved blade of the upper die holder are fitted may be provided at a position facing each other, and the lower die holder may be used as a transport path for the bus bar metal plate.

[0022]

[Effect of device]

 As is clear from the above description, according to the busbar manufacturing apparatus of the present invention, a busbar having a basic shape and a busbar having a similar shape can be made into the same metal by simply protruding and retracting a predetermined busbar manufacturing cutting blade and curved blade from the holder. Since it becomes possible to manufacture with a mold, it is not necessary to start a dedicated mold for a bus bar whose cutting and bending shapes are slightly different. The mold replacement time is reduced and the cost is reduced.

[Brief description of drawings]

FIG. 1 is a side view of a bus bar manufacturing apparatus of the present invention.

FIG. 2 is a plan view of a tab of a bus bar having a basic shape.

FIGS. 3A to 3D are plan views showing a procedure for manufacturing a tab of a bus bar having a similar shape.

FIG. 4 is a sectional view of a retracting mechanism for a cutting blade and a curved blade.

5 is a plan view of a portion of the mechanism of FIG.

FIG. 6A is a plan view of a bus bar having a basic shape,
(B) is a side view of the main part.

FIG. 7A is a plan view of a bus bar having a similar shape,
(B) is a side view of the main part.

[Explanation of symbols]

 1 basic shape bus bar 1a tab 2 similar shape bus bar 2a tab 5 holders 6a, 6b upper cutting edge 6c, 6d upper curved blade 8a, 8b lower cutting edge 8c, 8d lower curved blade 10 metal plate for bus bar 14 disk cam 15 slide cam

Claims (2)

[Scope of utility model registration request] 1. A press machine is installed along a conveying path for intermittently feeding a metal plate for a bus bar, and a cutting blade and a curved blade are provided in a holder which is moved up and down of the press machine at a required interval in the conveying direction. A bus bar manufacturing apparatus, characterized in that, of these cutting blades and curved blades, required cutting blades and curved blades are mounted in the holder so as to be retractable. 2. A cutting blade for punching a basic shape is mounted on the upstream side of the holder so as to project from the holder, and a cutting blade and a curved blade for similar shapes can be projected and retracted from the holder downstream of the holder. Of the similar shape cutting blades and curved blades, the required cutting blades and curved blades are projected from the holder and punched into a basic shape to cut and / or bend a part of the metal plate for a bus bar The busbar manufacturing apparatus according to claim 1, wherein the busbar can be manufactured by the same apparatus as the basic shape busbar.