KR100338540B1 - Stator core production apparatus and method of alternator for vehicles - Google Patents

Abstract

The present invention relates to an apparatus and method for manufacturing a state core of a vehicle alternator, by forming a position hole for positioning in two stages to reduce the initial width of the material and thus to reduce the loss of the material finally removed Of course, the production process of the state core is also reduced to improve productivity.

Characteristic implementation means for this are the position hole forming mold 3 with the upper and lower position hole punches 3a and 3a ', in which the progressive mold apparatus 2 forms a position hole in the inner portion of the material 1; A blank is formed at 18 positions in a vertical direction with a space between the pilot pins 4a, 4b, 4a ', and 4b', which is provided in front of the position hole forming mold 3 to hold the position of the material 1. A first blank forming mold 4 'consisting of a first blank mold 4 having left and right blank punches 4c and 5c, which are provided in front of the first blank forming mold 4 Side cutting mold 6 and upper side cutting mold 6 having upper and lower side cutting punches 6a and 6a 'provided to remove both sides while forming nine side holes on both sides of the Second blanks having upper and lower blank forming punches 7a and 7a 'provided in front of the to form the material 1 into the finished products 1a and 1b of the stator core shape. Consists of a castle die 7.

In addition, when the material 1 having the initial width L is transferred to the progressive mold apparatus 2, the first step of forming the nine position holes at intervals from each other while passing through the position hole forming mold 3 and After the first step, 18 vertical blanks are formed, and after the second step, the initial width (L ')-final width (L ₂ '), which are laterally spaced, is removed, and both sides are the same. By forming the blank at the position hole position of the material 1 through the third step and the third step through which the nine side holes are formed in the side hole spacing D 'at the side hole spacing D ₂ ′, respectively. The first finished product 1a and the first finished product 1b are formed together in a fourth step with the material 1 removed from the initial width L 'by the final width L ₂ ′. .

Description

State-of-the-art Apparatus and Method for Manufacturing Alternator for Vehicle {STATOR CORE PRODUCTION APPARATUS AND METHOD OF ALTERNATOR FOR VEHICLES}

The present invention relates to a state core manufacturing apparatus and method for a vehicle alternator, in particular, since the position holes formed on both sides of the material do not form a circular shape to reduce the loss width by reducing the initial required material width as well as manufacturing accordingly The present invention relates to an apparatus and method for manufacturing a state alternator for a vehicle which can reduce productivity and improve productivity.

In general, a car alternator (AC generator) is composed of a stator, a rotor, and a diode.When the ignition switch is turned on, a current of the battery flows into the rotor coil via a voltage regulator to generate magnetic lines, and then the engine starts to rotate the rotor. If the power generation occurs in the stator coil, three-phase alternating current is generated, and this three-phase alternating current is rectified by a diode. When the voltage at terminal B is higher than the battery voltage, the battery is charged immediately and current is supplied to each load. .

Here, the stator is composed of a rotor made of a state core, the state core has a unique shape so that the radially arranged slots are formed at the outer periphery thereof and the insulating member for preventing interference with the coil through this slot is pressed. It has a structure in which a plurality of disk-shaped iron sheets are stacked, and the state core is manufactured through a progressive mold using a strip-shaped material having a constant width to form a continuous manufacturing step.

As shown in FIG. 1, such a progressive mold apparatus 2 produces the required shape step by step while processing the material 1 according to the transfer step of the material 1 having the initial width L. As shown in FIG.

That is, the progressive mold apparatus 2 is provided with a plurality of upper and lower position hole punches 3a and 3a 'so as to divide the two side portions of the injected material 1 into upper and lower portions to form position holes, respectively. And a first blank forming mold 4 'which forms a rectangular blank perpendicular to the material 1 conveyed past the position hole forming mold 3, wherein the first blank is formed. The forming mold 4 'is provided with upper and lower pilot pins 4a, 4b, 4a' and 4b 'to be inserted into and fixed to the upper and lower position holes of the material 1, respectively. Of the first blank mold 4 having a left blank punch 4c having a predetermined interval and forming a vertical rectangular blank, and the material 1 conveyed through the first blank mold 4. Upper and lower pilot pins 5a, 5b, 5a ', and 5b' are provided to be inserted into and fixed to the upper and lower position holes, respectively, and the left side of the first blank mold 4 It is done with the second blank mold (5) having a right blank punch (5c) to form a blank on the perpendicular rectangle formed by the blank between the blank punch (4c).

Further, the side cutting molds having upper and lower side cutting punch punches 6a and 6a 'for removing both sides of the material 1 past the second blank mold 5 of the first blank forming mold 4' ( 6) and upper and lower blank forming punches 7a and 7a 'to form horizontal blanks between the upper and lower portions of the vertical blanks formed in the material 1 past the side cutting mold 6. It consists of two blank forming molds (7). Here, the upper and lower position hole punches 3a and 3a 'of the position hole forming mold 3 of the progressive mold apparatus 2 have an initial width L based on the position hole width L ₁ of the material 1. Position holes are formed in the individual punches that form the upper and lower position hole punches 3a and 3a ', and the position hole spacing (D), 1 pitch (about 90 mm), and the same position hole spacing (D _2). The lower position hole punch (3a ') is provided at intervals by the eccentric interval (D ₁ ) than the upper position hole punch (3a, 3a').

Further, the pilot pins 4a, 4b, 4a ', 4b', 5a, 5b, 5a ', and 5b' provided in the first and second blank molds 4 and 5 of the first blank forming mold 4 ', respectively. ) Is formed at a position to be inserted into two arbitrary position holes of the position holes of the material 1, while the left and right blank punches 4c and 5c have the first and second blank spacings D ₃ and D ₄ . 9 blanks are formed, and the blanks are formed such that the second punching gap D ₄ is positioned between the first punching gap D ₃ .

In addition, the upper and lower side cutting punches 6a and 6a 'of the side cutting mold 6 have a final width L ₂ smaller than the position hole width L ₁ , which is an interval to the center of the position holes formed on both sides. Both side gaps LL ₂ of (1) are removed.

In addition, the upper and lower blank forming punches 7a and 7a 'of the second blank forming mold 7 have the same upper and lower portions between the vertical blanks formed in the first blank forming mold 4'. A blank is formed at intervals D ₅ and D ₆ , but the lower blank forming punch 7a ′ is provided at an interval of an eccentricity gap D ₇ relative to the upper blank forming punch 7a.

Accordingly, when the material 1 having the initial width L is transferred to the progressive mold apparatus 2, the upper and lower position hole punches 3a along the position hole width L ₁ while passing through the position hole forming mold 3. (3a '), the first step of forming nine position holes at the upper and lower portions of both sides with an eccentric spacing (D ₁ ), and the material (1) having passed the first step to form the first blank. Positioned by the first blank mold 4 of the mold 4 'and fixed by the pilot pins 4a, 4b, 4a' and 4b 'inserted into the position holes, the nine blanks 4c are disposed by the left blank punch 4c. The second step in which a blank is formed, and the material (1) after the second step is provided in the second blank mold (5) and is positioned by the pilot pins (5a, 5b, 5a ', 5b') inserted into the position holes. Is fixed and a third step in which nine vertical blanks are formed between the blanks formed by the first blank mold 4 by the right blank punch 5c. The fourth and second stages of forming the final width L _{2 on both} sides of the material 1 by the upper and lower side cutting punches 6a and 6a 'of the die 6; Blanks are formed on the upper and lower portions of the vertical blank formed in the upper and lower portions along the eccentric spacing (D ₇ ) and the separation width (L ₃ ), thereby forming the material (1) from the initial width (L) to the final width (L _2). The first finished product 1a and the first finished product 1b are formed together in a fifth step in which they are removed together.

As shown in FIG. 2, the first and second finished products 1a and 1b completed after the five-step process are eccentric intervals D ₁ and D ₇ and the first and second blank intervals D ₃ and D. ₄ , D ₅ , D ₆ ), and the first blank gaps D ₃ and D ₄ are formed on both left and right sides of the center of the location hole, while the second blanks are formed. The gaps D ₅ and D ₆ are located between the position holes.

Here, the initial width L of the material 1 is 26.2 mm, the position hole width L ₁ is 20.0 mm, and the final width L ₂ is 18.8 mm.

However, the progressive mold apparatus 2 for forming a state core by continuously forming a blank and cutting a material 1 having a predetermined width is required to accurately position each step, so that both sides of the material 1 are necessarily required. After forming the location hole in the process, the process of removing most of both sides of the location hole is formed again, so the loss of the material is about 7.4 mm (26.2 mm (L) -18.8 mm (L ₂ )). As a result, a serious problem arises in that at least 28.2% of material is wasted due to the formation of both side position holes for each state core to be manufactured.

Therefore, the present invention has been invented to solve the above-mentioned problems in view of the above-described problems, and by forming a position hole for holding the position in two stages, the initial width of the material is reduced and thus the loss width of the material finally removed. In addition to reducing the production cost, the production process of the state core can be reduced to improve productivity.

Characteristic implementation means for this are the position hole forming mold having the upper and lower position hole punches in which the progressive mold device forms the position hole in the inner portion of the material, and the position of the material is provided in front of the position hole forming mold. A first blank forming mold comprising a first blank mold having left and right blank punches forming a blank at 18 positions in a vertical direction at a distance from each other and holding the pilot pin, which is provided in front of the first blank forming mold. Side cutting molds with upper and lower side cutting punches formed to remove nine sides at the same time to form nine side holes on both sides of the material and the front side of the side cutting molds are provided with the material of stator core shape. It consists of a second blank forming mold having an upper and lower blank forming punch to form a.

1 is a schematic diagram of a state core manufacturing apparatus of a vehicle alternator according to the prior art

2 is a state diagram of a state of the related art manufactured

Figure 3 is a schematic diagram of the state core manufacturing apparatus of the vehicle alternator according to the present invention

4 is a state diagram of the state of the core according to the present invention

<Explanation of symbols for the main parts of the drawings>

1: Material 1a: First finished product

1b: Second finished product 2: Progressive mold device

3: position hole forming mold 3a: upper position hole punch

3a ': Lower position hole punch 4': First blank forming mold

4: 1st blank mold 5: 2nd blank mold

4a, 4b, 5a, 5b: Upper pilot pin 4a ', 4b', 5a ', 5b': Lower pilot pin

4c: Left Blank Punch 5c: Right Blank Punch

6: side cutting mold 6a: upper side cutting punch

6a ': Lower side cutting punch 7: Second blank forming mold

7a: Upper blank forming punch 7a ': Lower blank forming punch

Hereinafter, the configuration and operation according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 shows a schematic view of the state core manufacturing apparatus of the vehicle Altinator according to the present invention, the progressive mold device 2 of the present invention has a predetermined width into the inside of the material (1) each of the nine holes Position hole forming mold (3) having upper and lower position hole punches (3a, 3a ') forming a recess, and a pilot lot provided in front of the position hole forming mold (3) to hold the position of the material (1) First blank mold 4 having left and right blank forming punches 4c and 5c to form 18 blanks in the vertical direction at a distance from the fins 4a, 4b, 4a 'and 4b'. The first blank forming mold 4, which is formed in front of the first blank forming mold 4, forms nine side holes on both sides of the material 1, and at the same time removes part of both side portions. Side cutting mold (6) and front of the side cutting mold (6) with upper and lower side cutting punches (6a, 6a ') Is provided is composed of the second blank forming die 7 having an upper and a lower punch to form the blank (7a, 7a ') to form a finished product (1a, 1b) of the material (1) in the stator core shape.

Here, the upper and lower position hole punch (3a, 3a ') of the position hole forming mold 3 is the position hole spacing (D ₈ ', D ₉ ') between the position hole width (L ₃ ') of the material (1) Wherein the position holes are formed in nine places at equal intervals, the lower position hole punch (3a ') is provided at intervals by the eccentric interval (D ₁ ') compared to the upper position hole punch (3a, 3a ').

In addition, the pilot pins 4a, 4b, 4a ', and 4b' provided in the first blank mold 4 of the first blank forming mold 4 'are provided at any two positions of the hole 1 of the material 1, respectively. The left and right blank punches 4c and 5c have a first and second blank spacings D ₃ ′ and D ₄ ′, respectively, and are formed at positions to be inserted into the position holes of the first and second blanks D ₃ ′. The second blank spacing (D ₄ ') is formed to be located in the 18 to form a blank in a total.

Then, the upper and the lower side of a cutting punch in the side of the cutting mold (6) (6a, 6a ' ) are at both sides of the material 1 side holpok (L _1', etc.) to the side hole pitch (D ₂ ') in accordance with the interval In order to form nine side holes, the side gaps L'-L ₂ 'of the material 1 are removed to form a final width L ₂ ' smaller than the initial width L ', but the lower side surface The cutting punch 6a 'is provided at intervals by an eccentricity gap D ₁ ′ compared to the upper side cutting punch 6a'.

In addition, the side holpok (L ₁ '), the radius side hole formed in the center of the initial width (L a' having a size outside of the side end portions of), i.e., the side forming the center of the side hole holpok (L ₁ ') and the initial The interval of the width L 'is smaller than the radius of the position hole.

In addition, the upper and lower blank forming punches 7a and 7a 'of the second blank forming mold 7 have the same upper and lower portions between the vertical blanks formed in the first blank forming mold 4'. A blank is formed at intervals D ₅ ′ and D ₆ ′, and the lower blank formation punch 7a ′ is provided at an interval of an eccentricity gap D ₇ ′ compared to the upper blank formation punch 7a.

Hereinafter, the operation of the present invention will be described in detail.

First, when the material 1 having the initial width L is transferred to the progressive mold apparatus 2, the punches 3a and 3a 'are passed along the position hole width L ₃ ′ while passing through the position hole forming mold 3. The first step in which nine position holes are formed at both sides with an eccentric distance (D ₁ ′) from each other, and the material (1) having passed the first step are made of the first blank forming mold (4 '). The position is fixed by the pilot pins 4a, 4b, 4a ', and 4b' provided in the blank mold 4 and inserted into the position holes, and the left and right blank punch 4c is inserted into the position hole width L ₃ '. The second step in which 18 vertical blanks are formed, and the material (1) after the second step is formed by the upper and lower side cutting punches (6a, 6a ') of the side cutting mold (6). ₂ '), the side spacing of the initial width (L achieve a') - a third step of forming the side hole, where each of nine final width (L ₂ ') while part is removed at the same time the side hole pitch (D _2') and the second After step 3, the second step The upper and the lower parts of 'the eccentric distance to remove the location hole formed along a (D ₇ position holpok (L _3), in the first step of the probable blank) initial width of the form of the blank material (1) according to (L' The first finished product 1a and the first finished product 1b are formed together in a fourth step in a state where the difference in the final width L ₂ ′ is largely removed.

As shown in FIG. 4, the first and second finished products 1a and 1b completed through the four-step process as described above have the eccentric intervals D ₁ ′ and D ₇ ′ as in the conventional case described above. It is located at a point 1/2 of the 1/2 blank interval (D ₃ ', D ₄ ', D ₅ ', D ₆ '), the first blank interval (D ₃ ', D ₄ ') are the center of the location hole Wherein the position hole spacing (D ₈ ', D ₉ ') is formed in the second blank spacing (D ₅ ', D ₆ ') while being formed on both sides of the left and right, to be removed with the formation of the blank do.

Therefore, the position hole is formed at the second blank position, which is not formed on the side of the material 1, so that the final width L ₂ ′ is 18.8 even if the initial width L 'of the material 1 is 24.0 mm. In mm, the same as in the case described above, the loss of material 1 is due to the formation of position holes on both sides per stator core manufactured as about 5.2 mm (24.0 mm (L ') -18.8 mm (L ₂ ')). The loss of material is reduced to 21.7%.

As described in detail above, the present invention reduces the size of the initial width of the material by forming the position holes formed on both sides of the material in two stages, thereby reducing the loss of material by about 23% compared to the conventional manufacturing process using the progressive mold device. It also has the effect of reducing the steps and improving productivity.

Claims (7)

A position hole forming mold for forming a position hole on both side portions of the conveyed material, a first blank forming mold for forming a longitudinal blank perpendicular to the conveyed material from the position hole forming mold, and the first blank forming mold A vehicle alternator comprising a side cutting mold for removing both sides of the material transferred from the mold and a progressive mold device composed of a second blank forming mold for forming a finished product by forming horizontal blanks on the upper and lower portions of the material transferred from the side cutting mold. In the state core manufacturing apparatus of The position hole forming mold 3 is provided with upper and lower position hole punches 3a and 3a 'so as to form nine position holes, respectively, spaced from each other into the material 1, and the side cutting mold 6 And a top and bottom side cutting punch (6a, 6a ') so as to form side holes in nine places at equal intervals on both sides of the material (1). 2. The position hole forming mold (3) according to claim 1, further comprising a position hole forming mold (3) having upper and lower position hole punches (3a, 3a ') for forming a position hole in a material to which the progressive mold device (2) is conveyed. Left to form 18 blanks in the vertical direction at a distance from each other with the pilot pins (4a, 4b, 4a ', 4b') provided in front of the forming mold (3) to hold the position of the material (1) A first blank forming mold (4) consisting of a first blank mold (4) having right blank forming punches (4c, 5c), which is provided in front of the first blank forming mold (4 '), and the material (1) The side cutting mold 6 and the side cutting mold 6 each having upper and lower side cutting punches 6a and 6a 'for forming nine side holes on both sides and removing part of both side portions. The upper and lower blank forming punches 7a and 7a 'are provided at positions corresponding to the position holes of the material 1 so as to be formed forward to form the finished products 1a and 1b having a stator core shape. An apparatus for manufacturing a state alternator for an automotive alternator, comprising a second blank forming mold (7) provided. The side hole formed by the upper and lower side cutting punches 6a and 6a 'of the side cutting mold 6 has an initial width L' about the side hole width L ₁ '. State core manufacturing apparatus of a vehicle alternator characterized in that it has a size off the side end portion. 4. The upper and lower side cutting punches (6a, 6a ') of the side cutting mold (6) are characterized in that they remove the side gaps (L'-L ₂ ') of the material (1). State-core manufacturing apparatus of automotive alternator. 3. The positioning pins (4a, 4b, 4a ', 4b') of the first blank mold (4) constituting the first blank forming mold (4 ') are positioned inwardly of the material (1). Two each of which is inserted into and fixed to the material 1, and the left and right blank forming punch (4c, 5c) provided in the center portion of the second blank interval (D ₃ ') between the first blank interval (D ₃ ') ₄ ') is formed so as to position the state core manufacturing apparatus of the automotive alternator, characterized in that to form a blank in 18 places. The upper and lower blank forming punches 7a and 7a 'of the second blank forming mold 7 are positioned at upper and lower portions between the vertical blanks formed in the first blank forming mold 4'. A blank is formed with a second blank space (D ₅ ′, D ₆ ′) to remove the location hole, but the lower blank forming punch 7a ′ is an eccentric interval D ₇ ′ compared to the upper blank forming punch _{7 a} . A state core manufacturing apparatus for a vehicle alternator, characterized in that provided at intervals. The material 1 having an initial width L is conveyed to the progressive mold apparatus 2 and passed by the punches 3a and 3a along the position hole width L ₃ ′ while passing through the position hole forming mold 3. A first step of forming nine position holes each having an eccentric spacing D ₁ ′ between the upper and lower portions of the side surface; After the first step, the material 1 is provided in the first blank mold 4 of the first blank forming mold 4 'by the pilot pins 4a, 4b, 4a' and 4b 'inserted into the position holes. A second step in which 18 vertical blanks are formed by the left and right blank punch 4c while the position is fixed; Initial width L, which is the side interval, so that the material 1, which has passed this second step, is formed by the upper and lower side cutting punches 6a and 6a 'of the side cutting mold 6 to form the final width L ₂ '. A third step of forming side holes at nine locations at the same time as side hole spacings D ₂ 'are removed while the final width L ₂ ' is removed; After the third step, the blank is formed according to the eccentricity gap D ₇ 'so that the upper and lower portions of the vertical blank formed in the second step are removed along the position hole width L ₃ ′ in the first step. A fourth step of forming the material (1) together with the first finished product (1a) and the first finished product (1b) together with the final width (L ') removed as much as the final width (L ₂ '); State core manufacturing method of a car alternator manufactured through.