KR20030017292A - Forming method of aluminum electrolytic condenser, provisional bending dies, lead guide for provisional bending, main bending dies, and manufacturing method with automatic processing machine - Google Patents

Abstract

PURPOSE: To enhance the mass production efficiency of an aluminum electrolytic capacitor, by quickening the molding, especially the temporary bend which requires the longest processing time, and enabling the intermittent sending of a rotating table. CONSTITUTION: A lead terminal 10b is bent temporarily, immediately after being passed in an insertion hole 12a by a temporarily bending die 122 shifting, being accompanied with an insulating seat plate 12. Therefore, the action only for mounting the insulating seat plate 12 to the lead terminal 10b becomes unnecessary. Moreover, since the tips of the lead terminal 10b are bent temporarily, immediately after passing the lead terminal 10b into the passage hole 12a, very small stroke of the temporarily bending die 122 will suffice, and the temporarily bending can be performed quickly.

Description

Forming method of aluminum electrolytic capacitors, furniture dies, furniture lead guides, bending dies, and manufacturing methods by automatic processing machines MANUFACTURING METHOD WITH AUTOMATIC PROCESSING MACHINE}

The present invention provides a method for forming an aluminum electrolytic capacitor, in which an insulated seat plate is attached to a lead terminal, and the lead terminal is bent almost horizontally along the bottom surface of the insulated seat plate, and the lead terminal is enlarged in an octagonal shape (conical trapezoidal shape). The present invention relates to a furniture die, a bending die for bending the lead terminal almost horizontally to its base, a furniture lead guide for correcting deformation of the lead terminal, and a manufacturing method of an aluminum electrolytic capacitor by an automatic processing machine.

In response to the mounting of electronic parts and automatic mounting technology for printed boards, electronic parts are equipped with lead terminals, which lead the lead terminals along the bottom of the electronic parts (below the main body) and solder the lead terminals to solder the printed circuit boards. Fix it to

BACKGROUND OF THE INVENTION An automatic processing machine for electronic parts that combines a component feeder, a rotary table (processing table), and a taping unit is known. In this automatic processing machine, for example, Japanese Patent Application Laid-Open No. 7-44353 and Japanese Patent Application No. 2878599 As described above, the electronic component is supplied from the component feeder to the rotary table, and predetermined machining such as molding is performed on the lead terminal of the electronic component, and the electronic component is stored in the recess of the carrier tape (plastic embossing tape) by a taping unit. Then, the carrier tape is sealed with a cover tape to automatically perform a series of processes such as supplying electronic parts, machining, and packaging (packaging).

If the calculation angle of the rotary table is set to 22.5 °, for example, 16 calculation positions (stations) can be obtained, and a station for machining, printing, inspection and taping is set using some of the 16 calculation positions. have. 16 supporting means corresponding to the calculation position are formed by 22.5 ° to the rotary table and the electronic parts supplied from the component feeder are transported to the station of machining, factoring, inspection and taping while being supported and supported by the supporting means. Machining is performed.

That is, while the rotary table is intermittently conveyed by 22.5 ° and rotates for 1 rotation, predetermined machining is performed on the electronic parts of the support means at the machining station, and at the same time, the part number, the rod number, etc. are printed on the electronic parts at the printing station, and inspection The inspection of the performance of the station excludes defective parts, the electronic parts are stored in the carrier tape at the taping station, the carrier tape is sealed with the cover tape, and a series of processes at the rotary table are completed. The electronic parts are stored in the carrier tape. The finished product is transferred from the rotary table to the next process.

An electronic component manufactured by an automatic processing machine that combines a parts supply machine, a rotary table (processing table), and a taping unit is an aluminum electrolytic capacitor. An aluminum electrolytic capacitor uses a conductive material for its exterior material. A seat plate (insulation seat plate) made of an insulating material is attached to the lower surface (body lower surface) to ensure insulation. Moreover, what sealed the organic semiconductor (solid) instead of electrolyte solution (liquid) as an aluminum electrolytic capacitor is also known.

Usually, aluminum electrolytic capacitors are manufactured through the following processes in the rotary table (processing table) of an automatic processing machine.

1. The aluminum electrolytic capacitor 10 has a shape having a head (main body: 10a) and two lead terminals 10b extending from the lower surface of the head (Fig. 8 (A)), and extra lead terminals. Is first cut (Fig. 8 (B)). This process is called "precut".

2. Press and flatten the bottom portion 10b 'of the lead terminal to make it easier to solder and lower the mounting height (Fig. 8 (C)). This process is called "press."

3. An insertion hole 12a through which the lead terminal 10b penetrates is formed in the insulating seat plate 12, and the lead terminal 10b penetrates through the insertion terminal hole 12a and bends almost horizontally (FIG. 8 ( D), Figure 8 (E)). Here, in order to prevent the insulated seat plate 12 from falling out before bending the lead terminal 10b almost horizontally, the lead terminal 10b is enlarged (bent) in an octagonal shape (conical trapezoidal shape). The process of bending the lead terminal 10b in an octagonal shape (conical trapezoidal shape) is referred to as "first forming", and the process of bending substantially horizontally is referred to as "second molding", and these two bending processes are referred to as "forming." Process ". In addition, the former is also called "furniture bending" and the latter is also called "main bending". An accommodating groove for accommodating the lead terminal 10b is formed in the lower surface of the insulated seat plate 12, and protruding downward from the lower surface of the head is prevented by accommodating the bent lead terminal in the accommodating groove.

4. The excess lead terminal 10b is cut off (Fig. 8 (F)). This process is called "lead cut".

5. The part number etc. are stamped on the upper surface of the head part 10a (FIG. 8 (G)).

6. The measurer 14 is brought into contact with the lead terminal 10b to check the electrical characteristics (Fig. 8 (H)).

7. Except the defective article, the good aluminum electrolytic capacitor 10 is housed in the recess of the carrier tape (plastic embossing tape 16) and the carrier tape is sealed with the cover tape 17 (Fig. 8 (I)).

As described above, processing such as machining, factoring, inspection, taping, etc. is performed at each station of the rotary table, and the electronic parts are manufactured and packaged while the rotary table is rotated once. In this case, the rotary table is intermittently transported, and the intermittent transport cannot be performed faster than the process with the slowest processing time among machining, factoring, inspection and taping. Mass production of is possible. In general, since the machining requires a maximum time, the machining is divided into several processes, and the processing time for each process is shortened, thereby increasing the intermittent transfer of the rotary table, thereby improving mass production efficiency (manufacturing efficiency).

In addition, molding requires a maximum time for molding, so that molding is divided into furniture (first molding) and body bending (second molding). That is, the machining in the manufacture of an aluminum electrolytic capacitor is divided into five steps below, and these steps are performed separately at the station of the rotary table.

1. Cutting off the extra lead terminals (precut)

2. Press of lead terminal (press)

3. Bending the octagonal shape of the lead terminal (conical trapezoidal shape) (first molding = furniture bending)

4. Nearly Horizontal Bend of Lead Terminal (Secondary Molding = Bent Bend)

5. Cutting off the extra lead terminals (lead cut)

In order to shorten the processing time in the machining process, the furniture bending is required to supply and install the insulating seat plate from the outside, which requires the most time among the five processes in the machining process. It is longer than the time required for each of the tapings. In other words, even if molding is divided into furniture and main folds, the processing time is shortened, but the maximum time for furniture is required and the biggest obstacle of mass production is furniture in molding. It is possible to speed up the intermittent transfer of oil, thereby improving mass production efficiency.

For example, Japanese Laid-Open Patent Publication No. 7-235460 performs furniture bending of an aluminum electrolytic capacitor as follows.

1. The aluminum electrolytic capacitor 10 is supported by a rotary table (chip processing table) using a belt, and the insulated seat plate (insulated terminal plate: 12) is adsorbed and supported by the suction head 20, and is adapted to the rotary motion of the rotary table. As a result, the aluminum electrolytic capacitor 10 is transferred to the first molding station (furniture bending position) above the suction head (Fig. 9 (a)). Here, it is natural that the lead terminal 10b is aligned with the insertion hole 12a of the insulating seat plate (insulation terminal plate).

2. The suction head 20 is insulated seat plate until the lead terminal 10b penetrates the insertion hole 12a of the insulated seat plate, and the insulated seat plate 12 is in contact with the bottom surface of the head 10a of the aluminum electrolytic capacitor. It rises, supporting (12) (FIG. 9 (b), FIG. 9 (c)).

3. The furniture bending die 22 waiting below the aluminum electrolytic capacitor 10 rises (FIG. 9 (c)). The tip of the furniture die 22 is in the shape of a mountain and the tip of the furniture shape of the furniture die is bent into an eight-shape (conical trapezoid) by enlarging the lead terminal 10b (furniture: Fig. 9 (d)). .

4. The support head 20 is lowered by releasing the support of the insulating seat plate 12, and the furniture die 22 is also lowered (Fig. 9 (e)). Then, the aluminum electrolytic capacitor 10 is transferred from the first molding station (furniture bending position) to the next second molding station (furniture bending position) by the rotary motion of the rotary table.

After furniture bending by furniture bending dies, the aluminum electrolytic capacitor is bent at the second forming station of the rotary table by bending the lead terminal 10b to almost the bottom thereof and cutting and removing the excess lead terminal at the lead cut station. Machining of is finished.

The specific example of the bending in a 2nd shaping | molding station is not described in Unexamined-Japanese-Patent No. 7-235460. However, when the aluminum electrolytic capacitor 10 reaches the second forming station by intermittent transfer of the rotary table, the flat bent die 52 of the tip is raised (Fig. 10 (f)), and the lead terminal 10b is removed. It is natural to bend (Fig. 10 (g)) down and wait (Fig. 10 (h)) until it is almost horizontal to the bottom.

Here, in the furniture bending method of JP-A-7-235460,

1. The suction head 20 conveys the insulating seat plate 12 to the bottom of the lead terminal 10b, and the stroke of the suction head 20 is long.

2. In order to furniture the bottom of the lead terminal 10b, the furniture die 22 is also raised to the bottom of the lead terminal, so that the stroke of the furniture die is long.

3. Lifting strokes of the suction head 20 and the furniture die 22 are carried out separately, not simultaneously.

As described above, in the known furniture bending method, not only the stroke of the suction head 20 and the furniture die 22 is long, but also the rising stroke is individually performed, which makes it difficult to quickly carry out furniture and the furniture is rotary. It becomes obstacle of mass production by automatic processing machine equipped with table.

Further, when the main bend is performed with the flat bend die 52 of the tip, the lead terminal 10b can be bent almost horizontally to the bottom thereof with certainty (Figs. 10 (f), 10 (g) and 10). (h)). However, the pressing force of the bending die 52 is transmitted to the lead terminal through the lead terminal 10b and the contact point of the bending die, and acts on the lead terminal as a tensile force. In addition, the tensile force acts intensively on the bottom of the lead terminal to draw the lead terminal from the bottom or damage the lower surface of the head of the aluminum electrolytic capacitor, resulting in the generation of defective products of the aluminum electrolytic capacitor. In addition, if the rising speed of the bending die 52 is increased, the tensile force acts rapidly on the bottom of the lead terminal, so that it is difficult to speed up the rising speed of the bending die, and it is difficult to shorten the processing time of the bending bend.

1 is a schematic plan view of an automatic processing machine employing the molding method of an aluminum electrolytic capacitor of the present invention.

Fig. 2 (a)-(e) are process drawings of the temporary bending of the aluminum electrolytic capacitor of this invention.

(A) is a perspective view of the joining die of this invention, (B) is a perspective view of the joining lead guide of this invention.

4 (f) to 4 (h) are process diagrams of furniture bending of the aluminum electrolytic capacitor of the present invention.

5 is a perspective view of another furniture bending die of the present invention.

6 (i)-(k) are process drawings of the bend of the aluminum electrolytic capacitor of the present invention.

7 is a perspective view of the bending die of the present invention.

8 (A)-(I) are manufacturing process diagrams of an aluminum electrolytic capacitor.

9 (a) to 9 (e) are process drawings of furniture bending of a known aluminum electrolytic capacitor;

(F)-(h) is a process diagram of the bending of a known aluminum electrolytic capacitor.

** Explanation of symbols for main parts of drawings **

10: aluminum electrolytic capacitor 10a: head

10b: lead terminal 10b ': bottom of lead terminal

12: insulated seat 12a: insertion hole

14: Measurer 16: Carrier Tape

17: cover tape 20: adsorption head of insulated seat plate

22, 122: furniture dies 122a: die body

122b: pair of members 124: furniture dies

124a: dice body 124b: pair of members

124c: guide member 125: groove of guide member

30: automatic machine 32: parts feeder

34: rotary table 36: return path

37: Magazin 38: Table for insulated seat plate supply

40: lead guide 42: male member

42a: protrusion piece 42b: a W-shaped groove

P: Spacing of the groove tip (lead terminal spacing) 44: Female member

44a; Horizontal grooves 52, 152: Bending dies

152a: groove 152b: free rotation roller

A: station for supply B: precut station

C: Press station D: First joining station

E: Second Bending Station F: Bending Station

G: Lead cut station H: Parts take out station

I: printing station J: inspection station

K: taping station

The present invention provides a method for forming an aluminum electrolytic capacitor which increases the mass production efficiency (manufacturing efficiency) by speeding up the intermittent conveyance of a rotary table by forming a lead terminal, in particular, bending of furniture, furniture bending die, furniture bending lead guide, bone An object of the present invention is to provide a method for producing an aluminum electrolytic capacitor by a bending die and an automatic processing machine.

According to the molding method of the present invention, the furniture die is furnitureed immediately after passing the lead terminal through the insertion hole and the hole by moving along the insulating seat plate.

In this configuration, the furniture die is moved along the insulating seat plate, so that an operation for attaching the insulating seat plate to the lead terminal is unnecessary. That is, it is not corresponded to the stroke of a suction head in a well-known structure, and only the stroke of a furniture die is sufficient. In addition, since the tip of the lead terminal is furnitureed immediately after the lead terminal is passed through the insertion hole, the stroke of the furniture die may be small. In this way, the furniture can be folded under the weak stroke of the furniture bending die, so that the furniture can be carried out quickly and the intermittent conveyance of the rotary table can be speeded up, thereby increasing the mass production efficiency (manufacturing efficiency) of the aluminum electrolytic capacitor.

Also, dividing the furniture into two steps without expanding the lead terminal to the bottom of the conical trapezoidal shape (eight-shaped) at one time will disperse the time required for furniture and the time required for individual furniture Decreases. That is, the furniture upholstery die is guided to the first furniture upholstery which extends only the tip of the lead terminal into an octagonal shape (conical trapezoidal shape) to the extent that the insulation seat is prevented from falling off, and guides the insulation body to a position where the furniture does not become obstructed. By dividing the upholstery into a second upholstery that extends the lead terminal into its eight-shape (conical trapezoidal shape) to the bottom, and if the first and second upholstering are performed at another station, the time required for the upholstery is reduced. It is distributed and shortening of furniture can speed up intermittent conveyance of a rotary table.

In addition, if the roller which is freely rotated is pressed against the lead terminal and the bending is performed under the idle of the roller, the transfer of the pressing force from the bending die to the lead terminal is suppressed, and the tensile force generated in the lead terminal is weak, so that the bending of the lead is quick. Can be done.

Embodiment of the Invention

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail, referring drawings.

As shown in FIG. 1, the automatic processing machine 30 for the shaping | molding method of this invention is provided with the component feeder 32 of the aluminum electrolytic capacitor 10, and the rotary table 34, and the conveyance path 36 is carried out. Extends between the part feeder and the rotary table.

The part feeder 32 is well known and can use, for example, a vibratory bowl feeder, in which the aluminum electrolytic capacitor 10 is transferred from the vibratory bowl feeder to the conveying path 36 under the vibration of the bowl, and at the tip of the conveying path. The support means (not shown) of the rotary table 34 receives and supports the aluminum electrolytic capacitor 10 in FIG. As support means, for example, a support chuck is used.

The rotary table 34 is well known, and for example, 16 calculation stations are formed under a calculation angle of 22.5 degrees, and in this embodiment, eight calculation stations A to H are used, and an aluminum electrolytic capacitor is used at the station A. (10) is supplied to the rotary table 34 via the conveyance path 36, predetermined machining is performed to the aluminum electrolytic capacitor at the stations B to G, and the aluminum electrolytic capacitor from the rotary table at the station H. Is taken out.

As described above, in the production of aluminum electrolytic capacitors,

1. Cutting off the extra lead terminals (precut)

2. Press processing of lead terminal (press)

3. Bending the octagonal shape of the lead terminal (conical trapezoidal shape) (first molding = furniture bending)

4. Bending of the lead terminal to the horizontal state (second molding = bend)

5. Cutting off the extra lead terminals (lead cut)

It is divided into five processes.

For example, the aluminum electrolytic capacitor 10 supplied from the station A to the rotary table 34 is cutting the extra lead terminals at the station B (precut) and pressing the lead terminals at the station C. (Press). Insulation seats need to be supplied and mounted from the outside, and furniture bending requires more time than other processes of machining, longer than the time required for printing, inspection and taping, and maximum time for furniture bending. The intermittent transfer of the rotary table is dependent on the furniture bending time. Therefore, in the embodiment, the furniture is divided into two steps, the lead terminals are bent at the stations (D, E), and the lead terminals are bent horizontally at the station (F). And the extra lead terminal is cut | disconnected (lead cut) in the station G.

In the embodiment, since there are many processes of machining the aluminum electrolytic capacitor 10, only the machining is performed in the rotary table 34, and the aluminum electrolytic capacitor 10 in which the machining is completed is carried out at the rotary table 34 at the station H. ), The printing station (I), the inspection station (J), and the taping station (K) are separated from the rotary table 34, and printing, inspection, and taping are performed outside the rotary table. However, the printing station I, the inspection station J, and the taping station K may be formed on the rotary table without being separated from the rotary table 34.

The present invention is characterized by molding at stations (D, E, F), that is, bending (first molding) and bending (second molding), and machining at other stations is well known. (Furniture Bending, Main Bending) The details are described.

When the supporting means of the rotary table reaches the station D by intermittent driving of the rotary table 34, and the aluminum electrolytic capacitor 10 supported by the supporting means is transferred to the position of furniture bending, the insulating seat plate 12 is The lead tube 10b of the aluminum electrolytic capacitor is transferred to the position where the insertion tube and the hole 12a are aligned (Fig. 2 (a)). Of course, the insulated seat plate 12 may be supplied to a predetermined position before the aluminum electrolytic capacitor 10 is transferred to the furniture bending position, and the order of supply of the aluminum electrolytic capacitor 10 and the insulated seat plate 12 is correlated. none. In the station D, the insulated seat plate 12 is supplied and mounted, and the tip of the lead terminal 10b is enlarged to an eight-shape (conical trapezoidal shape) so that the insulated seat plate does not fall off. ), The lead terminal 10b is bent almost horizontally to the bottom.

In the Example, the insulating seat plate 12 is supplied from the component magazine 37 via the supply table 38 (FIG. 1). The movable furniture bending die 122 is disposed below the station D of the rotary table 34, and the insulated seat plate supply table 38 is a rotary table for component supply, such as an aluminum electrolytic capacitor 10, furniture It is located between the plunging dice 122.

When the aluminum electrolytic capacitor 10 and the insulating seat plate 12 are transferred to a predetermined position in the station D, the furniture dies 122 are raised (Fig. 2 (a)), and the upper insulating seat plate 12 immediately after the rising. ) And push the insulation seat plate on its tip, and the furniture bending die continues to rise (Fig. 2 (b)).

As shown in FIG. 3 (A), for example, the furniture die 122 is formed by sandwiching a die body 122a having a tip end in a mountain shape and a die body sandwiched between the die body 122 and the tip end thereof, for example, with a flat insulating seat 12. It is comprised by the pair of member 122b which made it possible to support.

Immediately after the lead terminal 10b penetrates the insertion hole 12a of the insulated seat plate, the die body 122a of the furniture dies abuts against the lead terminal 10b, and the tip of the lead terminal is formed in an octagonal shape (conical trapezoidal shape). ) To enlarge the furniture (Fig. 2 (c), Fig. 2 (d)).

Then, the furniture die 122 is lowered and returned to the initial position (Fig. 2 (e)). Then, when the rotary table 34 is intermittently conveyed, the next aluminum electrolytic capacitor 10 is transferred to the station D, and the insulated seat plate supply table 38 rotates, and the next insulated seat plate 12 is moved. The state of FIG. 2 (a) is reproduced by being transferred to a predetermined position aligned with the station D. FIG. In addition, the aluminum electrolytic capacitor 10 after furniture is transferred to the next station E by the intermittent conveyance of the rotary table 34.

In this way, since the insulating seat plate 12 is placed between the aluminum electrolytic capacitor 10 and the furniture dies 122, the furniture dies are placed on the upper surface of the furniture seat dies to rise. Then, immediately after the lead terminal 10b is penetrated by the insertion hole 12a of the insulated seat plate, the furniture terminal 122 placed behind the insulated seat plate extends from the insulated seat plate 12 in an eight-shaped shape. (Conical trapezoidal shape) to expand the furniture immediately.

Here, the furniture die 122 rises along the insulating seat plate 12, and the operation | movement which raises an insulating seat plate alone is not necessary. In addition, since the furniture die 122 is bending the tip of the lead terminal immediately after the insulating seat plate 12 is attached to the lead terminal 10b, the stroke of the furniture die may be weak.

In this way, since only the movement of the furniture die 122 is necessary for the furniture bending, the movement itself is sufficient with a weak stroke, so that furniture can be promptly executed, thereby speeding up the intermittent transfer of the rotary table 34. can do.

The furniture die 122 should just be a shape which supports the insulating seat plate 12 at the front-end | tip, and has the die main body 122a which made the front-end | tip shape into the mountain shape. As shown in FIG. 3 (A), when the die main body 122a is sandwiched between a pair of flat members 122b of the supportable flat shape of the insulating seat plate 12 to form the furniture dies 122, a pair of members The insulated seat plate can be reliably supported at the flat tip of 122b.

In addition, when the lead terminal 10b is deformed, the lead terminal is not aligned with the insertion hole and the hole 12a of the insulated seat plate and cannot penetrate. Therefore, what is necessary is just to form the furniture lead guide 40 which corrects the deformation | transformation of the lead terminal 10b between the rotary table 34 and the table for supplying the insulation seat plate 38. FIG.

For example, the furniture lead guide 40 has a male member 44 having a male member 42 having a projection-like piece 42a and a horizontal groove 44a into which the projection-shaped piece is inserted, as shown in FIG. 3 (B). ), And a W-shaped groove 42b is formed on the protruding piece of the male member. Here, the W-shaped groove 42b is shaped so that the space P between its two tips is equal to the space between the lead terminals 11b (Fig. 2 (a)).

The furniture lead guide 40 is activated immediately when the aluminum electrolytic capacitor 10 reaches the station D. FIG. For example, when the male member 42 and the female member 44 are slid horizontally from both sides and the lead terminal 10b is sandwiched between them, for example, even if the lead terminal is deformed, the lead terminal is W-shaped groove 42b. Since the deformation of the lead terminal is corrected gradually and automatically on the inclined surface of the groove, it is positioned at the tip of the groove of the W shape. Of course, the position of the tip of the W-shaped groove 42b becomes a position aligned with the insertion tube and the hole 12a of the insulated seat plate, and the lead terminal 10b is automatically aligned with the insertion tube and the hole. Therefore, even when the lead terminal 10b is deformed by using the furniture lead guide 40, the deformation is corrected before the furniture is placed and positioned at the alignment position so that furniture can be smoothly performed.

The furniture lead guide 40 not only corrects the deformation of the lead terminal 10b but also firmly sandwiches the lead terminal between the male member 42 and the female member 44 to fix the lead terminal 10b in the axial direction at the time of furniture. To prevent deformation (fatigue). Therefore, it is preferable to form the furniture lead guide 40 close to the insulated seat plate 12, that is, the table 38 for insulated seat plate supply.

It is not limited to the structure which slides the male member 42 and the female member 44 from both sides, and fixes the lead terminal 10b in the center, for example, the female member is fixed, the male member is movable, It is good also as a structure which presses a lead terminal by slipping.

In the station E, another joining die 124 is waiting. As can be seen from FIG. 4 and FIG. 5, the furniture die 124 includes, for example, a die body 124a having a central portion of the tip of the tip, and a pair of members 124b disposed with the die body sandwiched therebetween. And a guide 124c capable of supporting the insulated seat plate 12. Here, the guide member 124c is able to ascend integrally with the die main body 124a, supports the insulated seat plate 12, and guides it to a position which is not obstructed by furniture dies. Guides the insulating seat plate to the bottom of the lead terminal 10b, and is formed in an L-shape to cover the die body 124a in the embodiment.

In addition, although the pair of members 124c is also used for the furniture dies 124 in consideration of the compatibility with the furniture dies 122, the pair of members 124c is omitted when the die body 124a is thickly molded. can do. The die main body 124a does not make the entire tip end in the shape of an acid, but only the center part thereof in the shape of a mountain, and both ends thereof have a flat shape.

Describing furniture by the furniture die 124 at the station E, the furniture die 124 is raised when the aluminum electrolytic capacitor 10 is transferred to the station E (Fig. 4 (f). ), And the guide member 124c which rises with the die main body 124a supports the insulating seat plate 12 first. When the insulated seat plate 12 is supported by the guide member 124c and guided to a position where the furniture of the lead terminal 10b by the die body 124a is not disturbed, the die body 124a is led to the lead terminal 10b. In contact with it, the shape is enlarged to an octagonal shape (conical trapezoidal shape) (Fig. 4 (g)).

Here, the lead terminal 10b abuts and expands on the center ridge of the die body 124a before abutting the flat portions on both ends of the die body 124a. Of course, since the guide member 124c guides and escapes the insulated seat plate 12 to a position where the bending of the die body 124a is not impeded, the insulated seat plate does not interfere with the bending of the die body. In this way, the lead terminal 10b is first enlarged in the center portion, and is guided to the inclined surface of the center portion to be brought into contact with the flat portions on both sides, so that sudden bending at the flat portions at both ends can be avoided. Bent. Therefore, the furniture die 124 can be raised at a high speed. Further, the lead terminal 10b is enlarged in an eight-shape (conical trapezoidal shape) to its lower portion by a weak stroke by the center ridge and the flat portions at both ends of the die body 124a.

Moreover, as shown, according to the dice | dies main body 124a which made the center the mountain shape and the both ends into the flat part, the furniture by the furniture die | dye 124 can be made under a small stroke. However, the die main body 124a may be in an acid shape without forming a flat portion, and in this case, the lead terminal can be continuously and smoothly bent even if the stroke is large. In addition, when the inclined surface of the mountain is not a continuous inclined surface, the inclination angle is reduced from the lower side to a gentle inclined surface, and the stroke can be reduced while ensuring continuous bending.

In this manner, the furniture die 124 can be raised at a high speed, and the lead terminal 10b can be furnitured with a weak scroll of the furniture dies, and the furniture E can be carried out quickly. can do. Of course, the time required for joining at station E does not exceed the time required for joining at station D.

As can be seen from FIG. 5, since the groove 125 through which the lead terminal 10b penetrates is formed in the center of the guiding member 124c, the guide member does not interfere with furniture bending of the lead terminal 10b. The lead terminal is bent to its bottom by the furniture die 124. The guiding member 124c guides the insulated seat plate 12 to a position where the head of the aluminum electrolytic capacitor 10 is in contact with the bottom surface, and the die body 124a moves the lead terminal 10b up to the bottom thereof. When the furniture is expanded in a conical trapezoid shape, the furniture die 124 descends, returns to the initial position, and waits (Fig. 4 (h)). As the groove 125, two groove holes through which the lead terminal penetrates may be formed in place of the elongated grooves.

The aluminum electrolytic capacitor 10 is transferred to the next station F to bend the main body. The main bending die 152 is waiting in the station F (FIG. 6 (i)). As can be seen from FIG. 7, a groove 152a is formed in the upper surface of the bending die 152, and two rotational free rollers 152b are housed in the groove. The roller 152b which is free to rotate is formed in the position which is several mm outward from the bottom part of the lead terminal 10b, and when the bending die 152 raises, a roller contacts a lead terminal 10b. Here, since the roller 152b is free to rotate, when it contacts the lead terminal 10b, it presses and bends a lead terminal, making it idle (rotate).

In the bend by the bend die 152 having the roller 152b, the lead terminal 10b is pressed while the roller revolves, so that the transfer of the pressing force from the bend die to the lead terminal is suppressed and is generated in the lead terminal. Tensile force is very small. Therefore, it is possible to prevent the lead terminal 10b from being drawn off from the bottom thereof, to damage the lower surface of the head of the aluminum electrolytic capacitor 10, or to peel off the coating of the lead terminal 10b. As a result, the main bending die 152 can be raised at a high speed, and the main bending can be performed quickly.

Since the groove for accommodating the lead terminal 10b is formed in the lower surface of the insulated seat plate 12, the bending die 152 is raised to a position almost in contact with the lower surface of the insulated seat plate, and the lead terminal 10b is extended to the bottom thereof. Bend almost horizontally. Since the lead terminal 10b is enlarged from the bottom part in furniture bending, the lead terminal can be smoothly bent in a substantially horizontal direction to the bottom part in this bending. Then, the lead terminal 10b is accommodated in the receiving groove of the lower surface of the insulated seat plate 12 and extends in the horizontal direction on the same surface as the lower surface of the insulated seat plate (Fig. 6 (j)), and the lead terminal is bent almost horizontally to the bottom. , The bending die 152 is lowered to the initial position (Fig. 6 (k)).

In this way, in order to prevent the fall of the insulating seat plate and to prevent the fall of the insulating seat plate, the first furniture part which extends the tip of the lead terminal 10b into an octagonal shape (conical trapezoidal shape) and the furniture is not obstructed. The time required for furniture is divided by dividing the furniture by the second furniture which extends the lead terminal to an eight-shape (conical trapezoidal shape) to the bottom while guiding the insulated seat plate to the position. Here, even if the time required for the first furniture is longer than the time required for the second furniture, the only operation required for the first furniture is the lifting of the furniture bending die 122, and the operation itself is also weak. Since one stroke is enough, the first furniture can be quickly executed. Moreover, by using the roller 152b which can be rotated freely, the bending of the main body can be performed quickly, and the time required for the main bending does not exceed the time required for the first furniture bending.

The molding time which determines the intermittent conveyance of the rotary table 34, precisely, by speeding up the furniture, can speed up the intermittent conveyance of the rotary table, and the mass production efficiency (manufacturing efficiency) of the aluminum electrolytic capacitor 10 is improved. In addition, dividing the furniture into two, distributing and shortening the furniture, the intermittent transfer of the rotary table is faster, the mass production efficiency (manufacturing efficiency) of the aluminum electrolytic capacitor 10 is further improved. For example, if the molding method of the present invention, which is divided into two pieces of furniture, is adopted in the automatic processing machine 30, the aluminum electrolytic capacitor 10 can be manufactured at 200 pieces / minute, so that the mass production efficiency is higher than that of the conventional machine. It is about 1.7 times better.

The above-described embodiments are intended to explain the present invention, and do not limit the present invention, and it is obvious that all modifications, modifications, and the like within the technical scope of the present invention are included in the present invention. For example, in the embodiment, the aluminum electrolytic capacitor 10, the insulating seat plate 12, the furniture dies 122 and 124, and the bending dies 152 are disposed in the vertical direction to elevate the furniture dies and the bending dies. It is good also as a structure which arrange | positions in a horizontal direction and reciprocates a furniture die and a ball | bowl die | dye in a horizontal direction.

As described above, in the present invention, the furniture die is moved along the insulating seat plate, so that furniture is rolled immediately after passing the lead terminal through the insertion hole and the hole. Thereby, the operation | movement for attaching the insulated seat board to a lead terminal becomes unnecessary, and furniture can be performed only by the stroke of a furniture die. In addition, since the tip of the lead terminal is furnitureed immediately after passing the lead terminal through the insertion hole, the stroke of this furniture bending die may be very small. As a result, the furniture can be quickly formed, and the mass production efficiency of the aluminum electrolytic capacitor is improved.

When the die-shaped die main body is sandwiched between a pair of members of the supportable shape of the insulated seat plate to form a furniture die, the insulated seat plate can be reliably supported at the tip of the pair of members.

The lead member of the aluminum electrolytic capacitor is constructed by providing a lead guide of the aluminum electrolytic capacitor, comprising a male member having a W-shaped groove with a groove-shaped spacing as the interval between the lead terminals and a female member into which the protrusion is inserted. If the lead terminal is inserted between the male and female members inside the W-shaped groove when the furniture is folded, the deformation is automatically corrected even if the lead terminal is deformed, for example, so that the lead terminal is aligned with the insertion tube and hole of the insulating seat plate. Can be positioned accurately. In addition, since the lead terminal is firmly sandwiched between the male member and the female member, the deformation (fatigue) of the lead terminal in the axial direction at the time of furniture can be prevented.

In addition, in order to prevent the fall of the insulated seat plate while mounting the insulated seat plate, the first furniture bend which extends only the tip of the lead terminal 10b into an octagonal shape (conical trapezoidal shape) and the position where the furniture is not obstructed By dividing the furniture by the second furniture fold, which leads the insulated seat plate to the bottom and expands the lead terminal to the shape of 八 (conical trapezoid), the time required for the furniture is distributed and shortened, and the furniture fold is more rapid. As a result, the mass production efficiency of the aluminum electrolytic capacitor is further improved.

In addition, if the roller which is freely rotated is pressed against the lead terminal and the main bending is performed under the idle of the roller, the transfer of the pressing force from the bending die to the lead terminal is suppressed, and the tensile force generated in the lead terminal is weak, so the main bending is quickly performed. It can be carried out.

Furniture dies combined with a guide member for guiding the insulated seat plate to a position where the tip center portion has a groove shape and a die body having a groove formed in both ends and flattened at both ends to prevent the bending of the die body. In this configuration, the lead terminal is first enlarged at the center portion of the die body, and the lead terminal is smoothly bent by being directed to the inclined surface of the center portion so as to contact the flat portions at both ends, thereby increasing the furniture die at high speed. have. In addition, the lead terminal is enlarged in an octagonal shape (conical trapezoidal shape) to the bottom of the furniture die by a weak stroke.

As described above, the lead die can be efficiently furnished by the weak stroke of the furniture die, and the furniture can be quickly formed.

The die may be formed in an acid shape without forming the flat portion, and in this case, the lead terminal can be continuously and smoothly bent. In addition, if the inclined surface of the mountain shape is not a continuous inclined surface, the inclination angle is reduced from the lower side to a gentle inclined surface, and the stroke can be reduced while ensuring continuous bending.

When the bending die is formed with a roller free of revolution, the roller presses the lead terminal while the idler rotates, so that the transfer of the pressing force from the bending die to the lead terminal is suppressed and the tensile force generated at the lead terminal is very small, and the lead The terminal is not drawn out from the bottom or the lower part of the head of the aluminum electrolytic capacitor is not damaged, thereby preventing the occurrence of defective products. Moreover, there is no fear of generating pullout or damage, nor peeling off the coating of the lead terminal. Therefore, the bending of the main body can be performed quickly.

By adopting the above molding method in the automatic processing machine equipped with the rotary table, the intermittent transfer of the rotary table can be speeded up, thereby dramatically increasing the mass production efficiency of the aluminum electrolytic capacitor.

Claims (15)

A furniture bending process that allows the lead terminal to penetrate the insertion hole and the hole of the insulated seat plate, and expands the lead terminal with a furniture die to prevent the insulated seat plate from falling off from the lead terminal, and a lead terminal with a bend die. In the aluminum electrolytic capacitor molding method having a bending process to be bent almost horizontally along the lower surface of the insulating seat until In the furniture bending process, the furniture die is moved immediately after the lead terminal passes through the insertion hole through the insertion seat by moving along the insulating seat plate. A furniture bending process that allows the lead terminal to penetrate the insertion hole and the hole of the insulated seat plate, and expands the lead terminal with a furniture die to prevent the insulated seat plate from falling off from the lead terminal, and a lead terminal with a bend die. In the aluminum electrolytic capacitor molding method having a bending process to be bent almost horizontally along the lower surface of the insulating seat until A method of forming an aluminum electrolytic capacitor, wherein in the furniture bending step, furniture is supported immediately after passing a lead terminal through an insertion hole by supporting an insulating seat plate on an upper surface of the furniture bending die to raise the furniture bending die. A furniture bending process that allows the lead terminal to penetrate the insertion hole and the hole of the insulated seat plate, and expands the lead terminal with a furniture die to prevent the insulated seat plate from falling off from the lead terminal, and a lead terminal with a bend die. In the aluminum electrolytic capacitor molding method having a bending process to be bent almost horizontally along the lower surface of the insulating seat until In the joining process, Align the insertion tube and the hole with the lead terminal of the aluminum electrolytic capacitor which has the head part up and the lead terminal down, and arranges the insulating seat plate under the aluminum electrolytic capacitor, By raising the furniture dies placed under the insulated seat plate, the furniture dies support and rise the insulated seat plate on the upper surface thereof, and the furniture dies perform the furniture of the lead terminals immediately after passing the lead terminals through the insertion holes and holes. Aluminum electrolytic capacitor molding method characterized in that. In the furniture die of the aluminum electrolytic capacitor which prevents the fall of the insulated seat plate from a lead terminal by enlarging the front-end | tip of the lead terminal of the aluminum electrolytic capacitor which penetrated the lead terminal through the insertion hole and the hole of an insulated seat plate, The dice body which made the tip a mountain shape, A furniture die of an aluminum electrolytic capacitor, characterized by comprising a pair of side members having a tip end shape sandwiched between a die body and supporting an insulating seat plate. In the furniture lead guide of an aluminum electrolytic capacitor, in which the lead terminal tip of the aluminum electrolytic capacitor is expanded with a furniture die, the lead terminal is supported to correct the deformation of the lead terminal. A male member having a protrusion having a W-shaped groove having a gap between the groove ends as a distance between the lead terminals and a female member into which the protrusion has been inserted, and the lead terminal when the lead terminal of the aluminum electrolytic capacitor is Guide to the furniture lead of the aluminum electrolytic capacitor, characterized in that guided to the W-shaped groove and sandwiched between the male member and the female member. A furniture bending process that allows the lead terminal to penetrate the insertion hole and the hole of the insulated seat plate, and expands the lead terminal with a furniture die to prevent the insulated seat plate from falling off from the lead terminal, and a lead terminal with a bend die. In the aluminum electrolytic capacitor molding method having a bending process to be bent almost horizontally along the lower surface of the insulating seat until A first furniture bending step of expanding the tip of the lead terminal immediately after the furniture die is moved along the insulating seat plate, so that the lead terminal passes through the insertion hole and the hole; A method of molding an aluminum electrolytic capacitor, characterized by dividing the furniture bending process into a second furniture bending process of guiding the insulated seat plate to a position where the furniture is not obstructed and extending the lead terminal to its bottom by a furniture bending die. In the bending bend of the aluminum electrolytic capacitor which extends the lead terminal of the aluminum electrolytic capacitor which penetrated the lead terminal through the insertion hole and the hole of an insulated seat plate to the bottom part, The die body which made the tip center part mountain shape, and both ends flat shape, Bending dies of the aluminum electrolytic capacitor, characterized by comprising a guide member having a groove through which the lead terminal penetrates and guiding the insulated seat plate to a position which moves integrally with the die body and does not interfere with bending by the die body. . In the bending bend of the aluminum electrolytic capacitor which extends the lead terminal of the aluminum electrolytic capacitor which penetrated the lead terminal through the insertion hole and the hole of an insulated seat plate to the bottom part, The dice body which made the tip a mountain shape, Bending dies of the aluminum electrolytic capacitor, characterized by comprising a guide member having a groove through which the lead terminal penetrates and guiding the insulated seat plate to a position which moves integrally with the die body and does not interfere with bending by the die body. . The die-bending die of the aluminum electrolytic capacitor according to claim 8, wherein the die body is formed in a shape having a gentle inclined surface from below. A furniture bending process that allows the lead terminal to penetrate the insertion hole and the hole of the insulated seat plate, and expands the lead terminal with a furniture die to prevent the insulated seat plate from falling off from the lead terminal, and a lead terminal with a bend die. In the aluminum electrolytic capacitor molding method having a bending process to be bent almost horizontally along the lower surface of the insulating seat until A method for forming an aluminum electrolytic capacitor, characterized in that, in the bending process, the roller is freely rotated to the lead terminal and the bending is performed under the idle of the roller. The method of any one of claims 1, 2, 3, and 6, wherein in the bending process, bending the roller freely rotated to the lead terminal is performed to perform bending under the idle of the roller. Aluminum electrolytic capacitor molding method. A furniture bending process that allows the lead terminal to penetrate the insertion hole and the hole of the insulated seat plate, and expands the lead terminal with a furniture die to prevent the insulated seat plate from falling off from the lead terminal, and a lead terminal with a bend die. In the aluminum electrolytic capacitor molding method having a bending process to be bent almost horizontally along the lower surface of the insulating seat until As the furniture die moves along the insulating seat plate, immediately after the lead terminal passes through the insertion hole, the first furniture bending step of enlarging the tip of the lead terminal, and the lead terminal by the furniture die In addition to dividing the furniture bending process into a second furniture bending process in which the lead terminal is enlarged to its base by furniture bending dies while guiding to a location that does not interfere with the expansion, A method of forming an aluminum electrolytic capacitor, characterized by pressing the roller which is free to rotate in the bending process, to press the lead terminal under bending of the roller. In the die-bending die of an aluminum electrolytic capacitor, the lead terminal of the aluminum electrolytic capacitor having the lead terminal penetrated through the insertion hole and the hole of the insulated seat plate bent almost horizontally along the lower surface of the insulated seat plate to the bottom thereof. Bending dies of the aluminum electrolytic capacitor, characterized in that the roller is pressed against the corresponding lead terminal and the roller is free to rotate the lead terminal. Supplying an aluminum electrolytic capacitor to a rotary table that is intermittently transported; Precut process of cutting the extra lead terminals of the aluminum electrolytic capacitor, A press step of flattening by pressing the bottom of the lead terminal; Forming process of attaching the insulated seat plate to the lead terminal and enlarging the lead terminal to prevent the insulated seat from falling off, and simultaneously bending the bottom of the lead terminal along the lower surface of the insulated seat plate almost horizontally; In the manufacturing method of the aluminum electrolytic capacitor by the automatic processing machine provided with the lead cut process which cuts an extra lead terminal, The molding process includes a furniture bending step of enlarging the lead terminals to prevent the fall of the insulating seat plate, and a bending process of bending the bottom of the lead terminal almost horizontally along the lower surface of the insulating seat plate, In the furniture bending step, the furniture die is moved along the insulating seat plate, so that the lead terminal is enlarged immediately after passing the lead terminal through the insertion hole and the hole of the insulating seat plate. Supplying an aluminum electrolytic capacitor to a rotary table that is intermittently transported; Precut process of cutting the extra lead terminals of the aluminum electrolytic capacitor, A press step of flattening by pressing the bottom of the lead terminal; Forming process of attaching the insulated seat plate to the lead terminal and enlarging the lead terminal to prevent the insulated seat from falling off, and simultaneously bending the bottom of the lead terminal along the lower surface of the insulated seat plate almost horizontally; In the manufacturing method of the aluminum electrolytic capacitor by the automatic processing machine provided with the lead cut process which cut | disconnects an extra lead terminal, The molding process includes a first furniture bending process in which the first furniture bending die moves along the insulating seat plate, thereby extending the tip of the lead terminal immediately after passing the lead terminal through the insertion hole and the hole of the insulating seat plate, thereby preventing the insulation seat from falling off; The second furniture bending process of moving the second furniture bending die to extend the lead terminal to the bottom while guiding the insulation seat plate to a position where the furniture is not obstructed, and the bottom of the lead terminal on the bottom surface of the insulation seat Method for producing an aluminum electrolytic capacitor by an automatic processing machine, characterized in that it has a bending process to be bent almost horizontally along.