JP2013043195A - Rotatably laminating unit and rotatably laminating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotatably laminating unit capable of punching a plate material with a single device and accurately laminating the punched plate materials at high speed by rotating each plate material at a designated angle.SOLUTION: The rotatably laminating unit includes a die holder which has a die mounting section for mounting a lower die and a part storage section for storing punched plate-like parts and further has an outer peripheral surface wherein a horizontally cross-sectioned contour is a circular shape and a holder support member which has an inner peripheral surface for surrounding an outer peripheral surface of the die holder and rotatably supporting the die holder. A first V-shaped groove is directly formed on the outer peripheral surface of the die holder, and an inner peripheral surface of the holder support member has a second V-shaped groove opposite to the first V-shaped groove. A cross roller bearing is configured in a way that a plurality of rolling bodies rotating in contact with the first V-shaped groove and second V-shaped groove are interposed between the die holder and holder support member and rolling axes of neighboring rolling bodies among the plurality of rolling bodies are mutually crossed to be perpendicular.

Description

  The present invention relates to a roll-over unit and a roll-over device for laminating punched plate-like members by rotating them by a predetermined angle.

  As the rolling unit and the rolling device for rotating and punching the punched plate-shaped member by a predetermined angle, for example, a punching die is provided on the upstream side in the transport direction in which the rolled steel plate as the plate-shaped member is transported. There is known a rotary laminating apparatus in which a rotary laminating die is provided downstream of a punching die, a punched die is punched from a rolled steel plate into a member having a predetermined shape, and the members punched by the rotary laminating die are stacked (for example, Patent Document 1).

JP 2003-62623 A

However, as in the case of the above conventional rotary laminating apparatus, in the case of a configuration provided with a punching die and a rotary laminating die, the apparatus is compared with the case of punching a plate material with one die and rotating the punched plate material. There is a problem that becomes complicated and large.
On the other hand, in the case where the plate material is punched with one die and the punched plate material is rotated, the structure must be provided with a bearing for rotating the die. When the die is supported via a bearing, the punching load acts on the bearing. However, if a large load acts on the bearing, the roller that is a component of the bearing is damaged, or the raceway surface is damaged. This causes the problem that the stability of the mold is impaired and the rotational accuracy is lowered.
In addition, since it is necessary to rotate the die at high speed, for example, when the driving device and the die are connected by a belt, it is necessary to increase the tension of the belt. By being attracted, there is a problem that the rotational axis is inclined by the gap of the bearing and the machining accuracy is lowered.

  The present invention has been made in view of the above-mentioned problems. The object of the present invention is to punch a plate material with a single device and rotate the punched plate material by a predetermined angle for each sheet at high accuracy and high speed. It is an object to provide a transposing unit and a transposing apparatus that can be stacked with each other.

The main invention for achieving the above object is:
A rolling unit that rotates and laminates a plate material punched by cooperation of an upper mold and a lower mold,
A mold holder provided with a mold mounting section to which the lower mold is mounted, and a mold holder having a parts storage section for storing a punched plate-shaped part;
A holder support member having an inner peripheral surface surrounding an outer peripheral surface of the mold holder and rotatably supporting the mold holder;
The outer peripheral surface of the mold holder has a first V-shaped groove directly formed so as to be concentric with the rotation axis of the mold holder along the rotation direction of the mold holder,
The inner peripheral surface of the holder support member has a second V-shaped groove facing the first V-shaped groove,
A cross roller bearing is configured by interposing a plurality of rolling elements that roll in contact with the first V-shaped groove and the second V-shaped groove between the mold holder and the holder support member. It is a featured transshipment unit.
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

It is a front view of the press apparatus concerning this embodiment. It is a side view of the press apparatus concerning this embodiment. It is a longitudinal cross-sectional view which shows an example of a transshipment unit. It is a perspective view for demonstrating a cross roller and a holder | retainer. FIG. 5A is a horizontal plan view of the roller gear cam unit as viewed from above, and FIG. 5B is a longitudinal sectional view of the roller gear cam unit as viewed from the front. It is a longitudinal cross-sectional view which shows the modification of a transshipment unit. It is a perspective view which shows the modification of a transshipment unit. It is a top view which shows the modification of a transshipment unit. It is a figure which shows the variation of the spacer used for the modification of a transshipment unit.

At least the following matters will become clear from the description of the present specification and the accompanying drawings.
A rolling unit for laminating a punched plate material by rotating a predetermined angle by cooperating with an upper die and a lower die, a die mounting portion to which the lower die is attached, and a punched plate-like part A mold holder having a part accommodating portion for accommodating the mold holder, an inner peripheral surface surrounding the outer peripheral surface of the mold holder, and a holder support member that rotatably supports the mold holder, The outer peripheral surface of the mold holder has a first V-shaped groove directly formed so as to be concentric with the rotation axis of the mold holder along the rotation direction of the mold holder, The inner peripheral surface of the holder support member has a second V-shaped groove facing the first V-shaped groove, and the first V-shaped groove and the holder are disposed between the mold holder and the holder support member. A plurality of rolling elements that roll in contact with the second V-shaped groove are interposed to A rotational stacking unit, characterized in that it constitutes a color bearing.

  According to such a rolling unit, the mold holder to which the lower mold is attached and the holder support member surrounding the outer peripheral surface of the mold holder are directly formed on the outer peripheral surface of the mold holder along the rotation direction. Since the cross roller bearing is configured by interposing a plurality of rolling elements that roll in contact with the first V-shaped groove and the second V-shaped groove on the inner peripheral surface of the holder support member, the radial direction and the thrust It is possible to receive a load in the direction. For this reason, there is no need to provide a plurality of bearings, and it is possible to rotate the mold with a simple configuration and to support high-speed rotation.

  Further, unlike other bearings such as ball bearings and needle bearings, the cross roller bearing does not have a gap, and the mold holder rotates with the first V-shaped groove on the outer peripheral surface of the mold holder. Since the cross roller bearing is formed by being directly formed so as to be concentric with the rotation shaft, it is possible to rotate the mold holder provided with the part accommodating portion for accommodating the plate-like part with higher accuracy. For this reason, it is possible to stack the plate material with high accuracy and high speed by punching the plate material and rotating the punched plate material by a predetermined angle for each sheet with a single apparatus.

In the rolling unit, the mold holder has a reduced diameter portion in which a lower outer diameter is smaller than an outer diameter of the upper portion, and the cross roller bearing is formed in the reduced diameter portion. Preferably, the upper part of the mold holder and the holder support member are vertically arranged at a distance from each other.
According to such a rolling unit, the cross roller bearing is formed in the reduced diameter portion of the mold holder, and the upper part of the mold holder and the holder support member are arranged above and below at a distance from each other. When the plate material is punched, if a downward load acting on the mold holder is large, the load can be received by a holder support member located below the upper part of the mold holder.

In this rolling unit, the distance between the upper part of the mold holder and the holder support member is such that when the plate material is punched, the cross roller bearing is permanently deformed, and the mold holder and the holder support It is desirable that the amount of movement relative to the member is smaller.
According to such a rolling unit, when punching the plate material, the upper part of the mold holder is brought into contact with the holder support member before permanent deformation occurs in the cross roller bearing due to the downward load acting on the mold holder. It is possible to make it. For this reason, it is possible to prevent damage to the cross roller bearing due to a downward load acting when punching the plate material.

In this rolling unit, a detachable spacer is provided between the upper part of the mold holder and the holder support member, and the distance between the upper part of the mold holder and the holder support member is It is desirable to adjust by the thickness of the spacer.
According to such a rolling unit, the distance between the upper part of the mold holder and the holder support member is adjusted by the thickness of the detachable spacer provided between the upper part of the mold holder and the holder support member. Even when the distance between the upper part of the mold holder and the holder support member is slightly adjusted, it is possible to easily adjust the distance.

In this rolling unit, it is preferable that the spacer is provided along the circumferential direction of the holder support member and has a size not more than half of the entire circumference surrounding the reduced diameter portion of the mold holder.
According to such a rolling unit, the detachable spacer provided between the upper part of the mold holder and the holder support member is not an annular shape and is not more than half the entire circumference surrounding the reduced diameter part of the mold holder Even when the mold holder and the holder support member are already assembled, the spacer can be disposed between the upper part of the mold holder and the holder support member from the side. For this reason, since the spacer can be exchanged in a state where the mold holder and the holder support member are assembled, the distance between the upper part of the mold holder and the holder support member can be easily adjusted.

In this rolling unit, the holder support member has an upper member and a lower member that are divided vertically at the bottom of the second V-shaped groove, and the upper member and the lower member are the mold. It is desirable that the bolts are fastened with bolts along the rotation axis of the holder.
According to such a rolling unit, the second V-shaped groove provided on the inner peripheral surface of the holder support member opposed to the first V-shaped groove formed on the outer peripheral surface of the mold holder is provided with the holder support member. Since the bottom part of the V-shaped groove is vertically divided by the upper member and the lower member, the rolling elements can be easily arranged between the second V-shaped grooves. Further, since the upper member and the lower member are fastened with bolts along the rotation axis of the mold holder, it is possible to adjust the preload acting on the cross roller bearing by the tightening force of the bolts.

In this rolling unit, it is preferable that a sealing material is provided above the rolling element between the outer peripheral surface of the mold holder and the inner peripheral surface of the holder support member.
According to such a rolling unit, a slight gap is provided between the outer peripheral surface of the mold holder and the inner peripheral surface of the holder support member, and a rolling element is provided in a part thereof. If a foreign substance such as dust enters the gap between the outer peripheral surface of the mold holder and the inner peripheral surface of the holder support member, the mold holder may not rotate smoothly. For this reason, by providing a sealing material above the rolling elements, it is possible to prevent foreign substances from entering the rolling elements.

Further, the rolling device is provided with a roller gear cam mechanism as a mechanism for rotating the die holder of the rolling unit by a predetermined angle.
The roller gear cam mechanism has a simple structure composed of a combination of a drum-shaped cam and a turret embedded with a cam follower in a radial pattern. Unlike a worm gear, it has no backlash, so it has excellent positioning accuracy. Therefore, it is possible to provide a transposing device with higher positioning accuracy.

In this rolling apparatus, it is desirable that the output shaft of the roller gear cam mechanism is integrated with the mold holder.
According to such a rolling device, the output shaft of the roller gear cam mechanism is integrated with the mold holder, so that the eccentricity of the output shaft is eliminated, and the punched plate material is rotated and stacked more accurately. Is possible.

  Hereinafter, a transposing device and a transposing unit according to an embodiment of the present invention will be described.

<<< Summary of Invention >>>
In the rolling apparatus according to the present embodiment, for example, a rolled steel sheet having a plate shape wound in a roll shape is supplied from an uncoiler between an upper mold and a lower mold, and the upper mold is lowered and the lower mold and It is provided in a press device that works together and punches into a predetermined shape. The rolling apparatus is used when, for example, a rotor or a stator called a motor core is formed by punching a plate-shaped rolled steel plate and stacking the punched plate-like parts.

  By the way, the rolled steel sheet used as a material is rolled and wound in a roll shape, so that the width is wide with respect to the outer dimensions of the motor rotor, stator, etc., so that the width is processed into the rotor, stator, etc. Cut to match the plate-shaped parts. For this reason, a rolled rolled steel plate is divided | segmented into the width direction and is supplied to a press apparatus. At this time, the rolled steel sheet is different in the rolling pressure because the pressure at the time of rolling differs between the support part of the rolling roller at both ends in the width direction and the center part of the rolling roller at the center in the width direction. The thickness is slightly different in the direction. The difference in thickness is the same in the width direction of the rolled steel sheet divided in the width direction as well as the end and center in the width direction of the rolled rolled steel sheet. For this reason, if the member formed by punching the conveyed rolled steel plate with an upper and lower metal mold | die is laminated | stacked as it is, the thick site | parts or thin site | parts of each plate-shaped part will be laminated | stacked. For this reason, when the punched members are stacked as they are, the stacked members are inclined, and there is a possibility that the performance of the motor is lowered when used as a rotor or a stator. For this reason, the roll-over device 10 is used to rotate and stack the punched members by a predetermined angle for each sheet.

  This embodiment demonstrates the example which laminates | stacks the plate-shaped part which punched the supplied rolled steel plate, and manufactures a rotor. Here, for example, it is conceivable that the stator is punched out using the outer peripheral portion of the rolled steel sheet remaining after punching out the rotor, but here, only the rotor is manufactured in order to simplify the explanation.

A rotor plate as a plate-shaped part that is laminated to constitute a rotor is not only simply punched in conformity with an outer shape, but also subjected to many pressings on the inside thereof. For this reason, the supplied rolled steel sheet is subjected to a plurality of press processes while being conveyed between a single upper mold and a lower mold. And when it is finally punched from the rolled steel plate of the material, the rotor plate conveyed onto the rolling device 10 and punched by the upper die and the lower die provided in the rolling device is the rolling device. It is accommodated in the part accommodating part in 10. Then, after the lower die and the part accommodating part of the rolling device 10 are rotated, the next part is punched out so that a new rotor plate is stacked on the rotor plate accommodated in the part accommodating part. It is configured. That is, the upper mold and the lower mold main body of this embodiment are arranged in a plurality of press molds for forming the rotor according to the conveying direction of the rolled steel sheet. The lower die for rolling provided in the rolling device is disposed on the lower die body at the position where the last step of punching from the rolled steel plate is processed.

<<<< Press machine >>>>
FIG. 1 is a front view of a press device according to the present embodiment. FIG. 2 is a side view of the press device according to the present embodiment.
As shown in FIG. 1, the pressing device 1 is provided on a base 2 a of the main body frame 2 via a bolster 3 and an upper structure 2 b of the main body frame 2 so as to be movable up and down. The main body frame 2 is provided with a guide member 7 for guiding the ascending / descending operation of the slide member 6. In FIG. 1, separately from the press device 1, a rolled steel plate 50 as a plate material is supplied from an uncoiler 9 disposed on the left side of the press device 1. And a lower die 4 are provided with a transfer device 8 for transfer.

<< Rolling device >>
The rolling apparatus 10 includes a rolling unit 20 provided with a lower mold 4a for rolling and attached to the lower mold 4, and a drive unit 30 for rotating the lower mold 4a for rolling by a predetermined angle. And a belt 39 that transmits the power of the drive unit 30 to the transposing unit 20. As shown in FIG. 2, the drive unit 30 is provided in the main body frame 2 on the back side in the direction intersecting with the conveying direction of the rolled steel sheet 50. The power of the drive unit 30 is configured to be transmitted to the rolling unit 20 by the belt 39. That is, the rolling unit 20 rolls so that the lower die 4a for rolling is located at a position where the lower plate 4 punches out the rotor plate 60 (FIG. 3) as a plate-like part from the rolled steel plate 50. The product unit 20 is fixed to the lower mold 4.

<Conversion unit>
FIG. 3 is a longitudinal sectional view showing an example of the transposing unit. In FIG. 3, the portion of the cross roller bearing shown in an enlarged manner is shown with hatching omitted even in a cross section in order to make it easy to see the reference numerals.

  As shown in FIG. 3, the rolling unit 20 includes a mold holder 21 having a mold mounting portion 21 c to which the lower mold 4 a for rolling is mounted, a holder support member 25 that holds the mold holder 21, A cross roller 18 as a plurality of rolling elements and a retainer 19 of the cross roller 18 which are interposed between the mold holder 21 and the holder support member 25 and constitute the cross roller bearing 17 together with the mold holder 21 and the holder support member 25. And have.

  The mold holder 21 includes a holder upper portion 21a whose outer shape in the horizontal section is circular, and a holder lower portion whose horizontal section has a smaller outer dimension than the holder upper portion 21a and is concentric with a circle forming the outer shape of the holder upper portion 21a. 21b. That is, the holder lower part 21 b is a lower part formed with an outer diameter smaller than the upper part of the mold holder 21 and corresponds to a reduced diameter part.

  The upper surface 21m of the holder upper portion 21a is flat, and is provided with a mold attachment portion 21c that is recessed from the upper surface 21m to receive and attach the lower mold 4a for rolling. A through hole that is connected to the die attachment portion 21c and has an outer shape slightly larger than the outer shape of the rotor plate 60 punched out by the lower die 4a for rolling is formed below the die attachment portion 21c. Yes. This through hole is configured to receive the rotor plate 60 that is punched and supported from below, and when the rotor plate 60 is continuously punched, the punched rotor plates 60 are sequentially stacked. The housing portion 21d is formed.

  The holder lower portion 21b has a stepped portion 21e that is formed such that the lower end diameter is smaller than the upper portion diameter. The stepped portion 21e is fitted with a pulley 38 around which a belt 39 for transmitting the power of the drive unit 30 to the rolling unit 20 is bridged. The pulley 38 is fixed to the mold holder 21 by fixing a pulley mounting flange 22 having the same outer diameter as that of the upper part of the holder lower part 21 b to the lower surface of the mold holder 21 with bolts 23. .

  Above the pulley 38 on the outer peripheral surface 21h of the holder lower portion 21b, a groove portion that forms a V-shape as a first V-shaped groove over the entire circumference at a position substantially intermediate between the lower surface of the holder upper portion 21a and the pulley 38 ( Hereinafter, the first V-shaped groove 21f) is provided concentrically with the rotation axis x2 of the mold holder 21. The first V-shaped groove 21f is deepest at the center in the vertical direction, and has an inclined surface 21i that is 45 degrees above and below the center, and the upper and lower inclined surfaces 21i face the outside of the holder lower part 21b. It is provided so that the interval is widened. A plurality of cylindrical cross rollers 18 are arranged in the first V-shaped groove 21f so as to roll. At this time, at the deepest part of the first V-shaped groove 21f, the peripheral edge 18c of the cross roller 18 enters so that the peripheral surface 18b of the cross roller 18 is surely brought into contact with the inclined surface 21i of the first V-shaped groove 21f. Is provided with a slit 21g formed deeper.

FIG. 4 is a perspective view for explaining the cross roller and the cage.
The cross roller 18 having a columnar shape is formed such that the diameter of the circle forming the end surface (bottom surface) 18a is larger than the height of the column. Further, as shown in FIG. 4, the cross rollers 18 are arranged so that the rolling axis x1 is inclined toward the rotation axis x2 of the mold holder 21, and the cross rollers 18 are adjacent to each other. As shown in FIG. 4, the rolling shafts x1 are arranged so that their inclination directions are opposite to each other and orthogonal to each other.

  An annular gap is set between the mold holder 21 and the holder support member 25, and a thin cylindrical retainer 19 is provided along the gap. The cage 19 is configured so that the adjacent cross rollers 18 are held so that the rolling shafts x1 are opposite to each other while maintaining a distance from each other. For this reason, a plurality of pocket holes 19 a for individually mounting the cross rollers 18 are formed on the peripheral surface of the retainer 19 in accordance with the arrangement interval of the cross rollers 18.

  The holder support member 25 is substantially concentric with the outer peripheral surface 21h so as to surround the outer peripheral surface 21h at a distance from the outer peripheral surface 21h provided with the first V-shaped groove 21f of the holder lower portion 21b of the mold holder 21. This is an annular member having an inner peripheral surface 25c formed as described above. The holder support member 25 has an upper support member 26 as an upper member that can be divided vertically and a lower support member 27 as a lower member.

  The upper support member 26 and the lower support member 27 serve as a second V-shaped groove that widens inward on the inner peripheral side of the boundary portion, that is, the inner peripheral surface 25c of the holder support member 25, when they are overlapped. A V-shaped groove (hereinafter referred to as a second V-shaped groove 25a) is formed. Specifically, an inclined portion 26a of 45 degrees is provided at the lower edge on the inner peripheral side of the upper support member 26 so as to increase the distance from the lower support member 27 toward the inner peripheral side. An inclined portion 27a of 45 degrees is provided at the upper edge of the inner peripheral side of 27 so that the distance from the upper support member 26 increases toward the inner peripheral side. Therefore, when the upper support member 26 and the lower support member 27 are overlapped, the inclined portion 26a of the upper support member 26 and the inclined portion 27a of the lower support member 27 form a second V-shaped groove 25a. The Further, at the deepest position of the second V-shaped groove 25a, a slit 25b formed deeper is provided in the same manner as the first V-shaped groove 21f of the mold holder 21. The slit 25b is composed of step portions 26b and 27b provided at the outer peripheral edges of the inclined portions 26a and 27a of the upper support member 26 and the lower support member 27, respectively. Here, the step portions 26b and 27b provided on the outer peripheral edges of the inclined portion 26a of the upper support member 26 and the inclined portion 27a of the lower support member 27 correspond to the bottom portion of the second V-shaped groove 25a.

  Then, the second V-shaped groove 25a of the holder support member 25 in which the upper support member 26 and the lower support member 27 are overlapped with each other and the first V-shaped groove 21f of the mold holder 21 face each other, and the cage 19 is interposed therebetween. And the upper support member 26 and the lower support member 27 are assembled on the outer peripheral side of the mold holder 21 through the cross rollers 18 respectively disposed in the pocket holes 19a of the retainer 19 so that the gold A cross roller bearing 17 is configured in which the mold holder 21 forms an inner ring and the holder support member 25 forms an outer ring.

  Bolts 28 are inserted into the upper support member 26 and the lower support member 27 that are stacked one above the other from the lower surface side of the lower support member 27 and screwed into the upper support member 26. For this reason, when the bolt 28 is tightened, the upper support member 26 and the lower support member 27 are brought closer to each other, so that the cross roller 18 is pressed toward the mold holder 21 to be preloaded. Yes.

  A space between the mold holder 21 that holds the cross roller 18 and the holder support member 25 is slightly wider than the thickness of the cage 19 above and below the cross roller 18. Further, on the upper side of the cage 19, an enlarged diameter portion 26 c in which the inner circumference of the upper support member 26 is enlarged is provided, and the sealing material 16 is provided in the enlarged diameter portion 26 c.

  When the upper support member 26, the lower support member 27, and the mold holder 21 are assembled via the cage 19 and the cross roller 18, the upper surface 26d of the upper support member 26 is above the lower surface 21j of the holder upper portion 21a. Is located. Since the holder support member 25 is fixed to the lower mold 4 and the mold holder 21 is rotatably held by the holder support member 25, the holder support member 25 is disposed between the holder upper portion 21a and the upper support member 26 positioned below the holder upper member 21a. In addition, a slight gap is provided in a portion where the outer side surface 21k of the holder upper portion 21a and the upper support member 26 face each other in the horizontal direction. At this time, the gap between the holder upper portion 21a and the upper support member 26 positioned therebelow is a cross roller bearing when the rolled steel plate 50 is punched by the upper die 5 and the lower die 4a for rolling. 17 is set to be smaller than the relative movement amount of the mold holder 21 and the holder support member 25 in which permanent deformation occurs.

  Further, the outer surface 21k of the holder upper portion 21a is provided in a portion having a reduced diameter on the lower end side, and the upper support member 26 and the mold holder 21 are opposed to each other at an interval in the horizontal direction at the reduced diameter portion. Is configured to do. For this reason, since the upper portion 21a of the holder is located above the portion where the upper support member 26 and the mold holder 21 face each other in the horizontal direction, dust or the like is generated between the upper support member 26 and the mold holder 21. It is hard to enter.

<Drive unit>
FIG. 5 is a cross-sectional view showing the roller gear cam unit. FIG. 5A is a horizontal sectional view of the roller gear cam unit as viewed from above, and FIG. 5B is a vertical sectional view of the roller gear cam unit as viewed from the front.

  In the drive unit 30 of the present embodiment, for example, a motor (not shown) is connected to the input shaft 33, and a pulley 44 is provided on the output shaft 35a to be connected to a pulley 38 provided in the transposing unit 20 by a belt 39. This is a roller gear cam unit 32 as a roller gear cam mechanism.

  The roller gear cam unit 32 includes an input shaft 33, a roller gear cam 34, and a turret 35 formed integrally with an output shaft 35a.

  The input shaft 33 is rotatably supported with respect to the housing 37 by a pair of tapered roller bearings (hereinafter simply referred to as bearings 36). A motor (not shown) is fastened to the input shaft 33 at one axial end, and the input shaft 33 is rotationally driven by the driving force of the motor.

  The roller gear cam 34 is supported by the input shaft 33 and rotates integrally with the input shaft 33. The roller gear cam 34 has a cam surface 34a whose phase is displaced in the axial direction as the input shaft 33 rotates.

  The turret 35 is rotatably supported with respect to the housing 37 by a cross roller bearing 40. A plurality of cam followers 41 arranged radially and at equal intervals are provided below the outer peripheral surface of the turret 35. The cam follower 41 is engaged with the roller gear cam 34 described above (in other words, meshed with the cam surface 34a of the roller gear cam 34), and the rotational force of the input shaft 33 is applied to the roller gear cam 34 and the roller gear cam 34. It is configured to be transmitted to the turret 35 via the cam follower 41. That is, the turret 35 rotates as the roller gear cam 34 rotates integrally with the input shaft 33. As shown in FIG. 5, the cross roller bearing 40 is supported by a turret flange 43 fixed to the housing 37 with a screw.

<Operations of press device and rolling device>
As shown in FIG. 1, the rolling unit 20 is arranged in the lower mold 4 on the downstream side in the conveying direction of the rolled steel sheet 50.
On the uncoiler 9, a rolled steel sheet 50 rolled by a rolling device is cut and wound in the width direction.

  The pressing device 1 is configured such that when the rolled steel sheet 50 supplied from the uncoiler 9 and conveyed by the conveying device 8 passes over the lower mold 4, it passes through the plurality of pressing steps and reaches the transposing unit 20. ing. That is, each time the conveyance of the rolled steel sheet 50 is stopped, the upper mold 5 is lowered and sequentially pressed against the rolled steel sheet 50 that is intermittently conveyed on the lower mold 4. At this time, in the press work before reaching the rolling device, dowels or dowels protruding on the front or back side for positioning each rotor plate 60 (FIG. 3) stacked after being punched are fitted. A recessed portion to be joined may be formed.

  When the rolled steel sheet 50 that has been subjected to press work in sequence is placed on the lower die 4a for rolling of the rolling device 10 and the conveyance is stopped, the upper die 5 is lowered and the upper die 5 and The rotor mold 60 is punched from the rolled steel sheet 50 in cooperation with the lower die 4a for rolling. At this time, the punched rotor plate 60 passes through the lower die 4 a for rolling and is accommodated in the part accommodating portion 21 d provided in the die holder 21. The inner diameter of the part accommodating portion 21d is slightly larger than the inner diameter of the lower die 4a for rolling, and the punched rotor plate 60 is kept horizontal while being supported by a part support mechanism (not shown). Until it is accommodated in the part accommodating portion 21d. Moreover, the part accommodating part 21d has the convex part 21n which is provided in the outer peripheral side of the accommodated rotor plate 60, and enters into the site | part recessed in the center side, and regulates rotation of the rotor plate 60 laminated | stacked. It is configured.

  When the rotor plate 60 is punched and the upper die 5 is lifted and pulled out from the lower die 4a for rolling, the motor of the rolling device 10 rotates and rotates through the roller gear cam unit 32. The operation of 35a is transmitted to the transposing unit 20 through the belt 39. At this time, the motor rotates to rotate the mold holder 21 by 90 degrees, for example. Thereby, the mold holder 21 rotates 90 degrees and stops while the rolled steel sheet 50 is intermittently conveyed once while the upper mold 5 is pulled out from the lower mold 4a for rolling.

  Thereafter, the upper die 5 is lowered again, and the upper die 5 and the lower die 4a for rolling work together to punch out the rotor plate 60 from the rolled steel plate 50. The rotor plate 60 punched at this time was pressed on the rotor plate 60 already accommodated in the part accommodating portion 21d by changing the rolling direction of the rolled steel sheet 50 by 90 degrees and projecting from one rotor plate 60. The dowel is fitted into a recess provided in the other rotor plate 60 to be integrated.

  Thereafter, the operation of punching and laminating the rolled steel sheet 50 and the operation of rotating the laminated rotor plate 60 by 90 degrees are alternately repeated to form the rotor.

<Effectiveness of the rollover unit and rollover device>
According to the rolling unit 20 and the rolling device 10 of the present embodiment, the mold holder 21 to which the lower mold 4a for rolling is attached and the holder support member 25 surrounding the outer peripheral surface 21h of the mold holder 21 are: Since the cross roller bearing 17 is configured by including the plurality of cross rollers 18 between the outer peripheral surface 21h of the mold holder 21 and the inner peripheral surface 25c of the holder support member 25, the load in the radial direction and the thrust direction is reduced. It is possible to receive. For this reason, since it is not necessary to provide a some bearing, it is possible to rotate the lower metal mold | die 4a for rolling with a simple structure, and to respond | correspond to high-speed rotation.

  Further, since the mold holder 21 is used as the inner ring of the cross roller bearing 17 and the holder support member 25 is used as the outer ring of the cross roller bearing 17, the cross roller 18 is directly supported so as to roll freely. In addition, it is possible to increase the accuracy as compared with the case where a cross roller bearing having an inner ring is interposed between the mold holder 21 and the holder support member 25, and it is possible to suppress the occurrence of rattling. For this reason, it is possible to punch the rolled steel sheet 50 and rotate it by a predetermined angle for each sheet, thereby stacking with high accuracy and high speed.

  Further, the cross roller bearing 17 in which the bolt 28 is screwed so as to bring the upper support member 26 and the lower support member 27 closer to each other and the cross roller bearing 17 is preloaded in the axial direction has no gap inside. The die holder 21 can be rotated with higher accuracy, and the punched rolled steel plates 50 can be rotated and laminated one by one with high accuracy. At this time, as described above, when power is transmitted from the drive unit 30 via the belt 39 to rotate at high speed, the tension of the belt 39 needs to be particularly increased. At this time, when the cross roller bearing 17 having no gap is used as in this embodiment, the rotation axis x2 of the mold holder 21 is not easily tilted, so that the punched rotor plate 60 can be prevented from being eccentric. It is. For this reason, especially when the rotor and stator of the motor are formed by laminating the plate members by rotating each plate by a predetermined angle as in the above embodiment, the outer peripheral surface of the rotor and the inner periphery of the stator due to eccentricity are formed. It is possible to keep the surface unevenness small. If the irregularities on the outer peripheral surface of the rotor and the inner peripheral surface of the stator are small, the amount of cutting to reduce the irregularities on the outer peripheral surface of the rotor and the inner peripheral surface of the stator may be reduced by processing after pressing. Is possible. For this reason, the machining time can be shortened and the interval between the outer peripheral surface of the rotor and the inner peripheral surface of the stator can be narrowed, so that an efficient motor can be manufactured.

  Further, the second V-shaped groove 25 a provided on the inner peripheral surface 25 c of the holder support member 25 facing the first V-shaped groove 21 f formed on the outer peripheral surface 21 h of the mold holder 21 constitutes the holder support member 25. Since the second V-shaped groove 25a is vertically divided by the support member 26 and the lower support member 27, the cross roller 18 can be easily disposed between the second V-shaped grooves 25a. Further, since the upper support member 26 and the lower support member 27 are fastened by the bolts 28 extending in the vertical direction, the preload acting on the cross roller bearing 17 can be easily adjusted by the tightening force of the bolts 28. is there.

  The cross roller bearing 17 is formed at the reduced diameter portion of the mold holder 21, and the lower surface 21j of the holder upper portion 21a of the mold holder 21 and the upper support member 26 of the holder support member 25 are vertically spaced apart from each other. Therefore, when the rotor plate 60 is punched, if a downward load acting on the mold holder 21 is large, the lower mold 4 is positioned below the holder upper portion 21a of the mold holder 21. A load can be received by the attached holder support member 25.

  At this time, the distance between the lower surface 21j of the holder upper portion 21a and the upper support member 26 of the holder support member 25 that are spaced apart in the vertical direction is set to be a permanent deformation in the cross roller bearing 17 when the rotor plate 60 is punched. Since the relative movement amount between the mold holder 21 and the holder support member 25 is set, when the rotor plate 60 is punched out, the cross roller bearing 17 is permanently deformed by a downward load acting on the mold holder 21. In advance, the holder upper portion 21 a of the mold holder 21 can be brought into contact with the holder support member 25. For this reason, it is possible to prevent the cross roller bearing 17 from being damaged by a downward load acting when the rolled steel sheet 50 is punched.

  In addition, a slight gap is provided between the outer peripheral surface 21h where the first V-shaped groove 21f of the mold holder 21 is provided and the inner peripheral surface 25c of the holder support member 25, and a cross roller is formed in a part thereof. 18 is provided, if a foreign substance such as dust enters the gap between the outer peripheral surface 21h of the mold holder 21 and the inner peripheral surface 25c of the holder support member 25, the mold holder 21 does not rotate smoothly. There is a fear. For this reason, by providing the sealing material 16 between the outer peripheral surface 21 h of the mold holder 21 and the inner peripheral surface 25 c of the holder support member 25 and above the cross roller 18, foreign substances to the cross roller 18 side can be obtained. It is possible to prevent entry.

  Further, in the present embodiment, the drive unit 30 for rotating the die holder 21 of the transposing unit 20 is configured by a combination of a drum-shaped roller gear cam 34 and a turret 35 in which cam followers 41 are radially embedded. Since the roller gear cam 34 having a simple structure is used, backlash does not occur unlike the case where the worm gear is used. For this reason, it is possible to intermittently drive the lower die 4a for rolling by the roller gear cam 34, which is an indexing mechanism having excellent positioning accuracy, and to provide the rolling device 10 with higher positioning accuracy. Is possible.

  FIG. 6 is a longitudinal sectional view showing a modification of the transposing unit 20. FIG. 7 is a perspective view showing a modification of the transposing unit. FIG. 8 is a plan view showing a modification of the transposing unit. FIG. 9 is a view showing variations of spacers used in a variation of the transshipment unit.

  In the above embodiment, the slight gap between the holder upper portion 21a and the upper support member 26 positioned below the punched steel plate 50 is punched with the upper die 5 and the lower die 4a for rolling. It is set to be smaller than the relative movement amount of the mold holder 21 and the holder support member 25 that sometimes cause permanent deformation in the cross roller bearing 17. For this reason, it is necessary to accurately adjust the slight gap between the holder upper portion 21a and the upper support member 26 located below the holder upper portion 21a. In particular, when the holder support member 25 is overlapped with the upper support member 26 and the lower support member 27 and tightened with the bolts 28 as in the roll-over unit 20 of the above embodiment, the tightening degree of the bolts 28 is determined. As a result, the distance between the holder upper portion 21a and the upper support member 26 located therebelow may be different.

  For this reason, in the modified example of the transshipment unit 20 described below, as shown in FIGS. 6 to 8, a part of the upper support member 26 in the above embodiment is a detachable spacer 47, and the thickness of the spacer 47 is set. By changing the distance, it is possible to adjust and manage the distance between the holder upper portion 21a and the upper support member 26 located therebelow.

  Specifically, a portion of the upper support member 26 located below the upper portion 21a of the holder is formed thinner than the upper support member 26 of the above embodiment, and a spacer 47 having an adjusted thickness is disposed in the thinned portion. I am going to do that. At this time, the portion of the upper support member 26 located on the outer peripheral side of the spacer 47 is configured to be detachable as a spacer cover 26e. For example, when the spacer 47 is ¼ of the circumference as shown in FIG. 9A, the spacer cover 26e located on the outer periphery side is removed, and the spacer cover 26e on the outer periphery side is removed. The spacer cover 26e is arranged so that the spacer 47 can be disposed between the holder upper portion 21a and the thinly formed portion of the upper support member 26 by moving the spacer 47 inward from the attachment position. It is formed larger than 1/4 of the circumference. For this reason, the spacer 47 cannot be formed in a ring shape, and is formed in a size that is half or less of the entire circumference surrounding the outer peripheral surface 21 h of the mold holder 21.

  According to such a variation of the transposing unit 20, the thickness of the detachable spacer 47 provided between the holder upper portion 21 a of the mold holder 21 and the holder support member 25, and the holder upper portion 21 a of the mold holder 21. Since the distance between the holder support member 25 and the holder support member 25 is adjusted, the distance between the holder upper portion 21a of the mold holder 21 and the holder support member 25 can be easily adjusted even if it is finely adjusted.

  In addition, since the spacer 47 is not annular but has a size less than half of the entire circumference surrounding the outer peripheral surface 21h of the mold holder 21, even when the mold holder 21 and the holder support member 25 are already assembled, The spacer 47 can be disposed between the holder upper portion 21a of the mold holder 21 and the holder support member 25 from the side. Therefore, since the spacer 47 can be exchanged in a state where the mold holder 21 and the holder support member 25 are assembled, the distance between the holder upper portion 21a of the mold holder 21 and the holder support member 25 can be easily adjusted. Is possible.

  In the above modification, the size of the spacer 47 is ¼ of the circumference. However, as shown in FIGS. 9B to 9D, 1/2, 1/3, 1 of the circumference. / 6, etc., so long as it is less than half. Further, the spacer 47 does not need to equally divide the circumference, does not need to divide the entire circumference, and does not need to be divided radially from the center. For example, as shown in FIG. 9 (e), a part of the circumferential direction is divided in a direction parallel to the diameter, and the distance in the diameter direction of the part to be divided is made larger than the diameter of the holder lower part 21b. By placing the two spacers 47, it is possible to move the two spacers 47 in the horizontal direction to form two detachable spacers 47, respectively. In this case, the spacer cover 26e located on the outer peripheral side of the spacer 47 can be divided in the same direction as the moving direction when removing each spacer 47 so that both of the two spacers 47 can be detached, for example, As shown in FIG. 9 (f), it is necessary that the entire circumference forms a spacer cover 26e and that the entire circumference is removable.

=== Other Embodiments ===
The above-described embodiments are for facilitating the understanding of the present invention, and are not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof. In particular, the embodiments described below are also included in the present invention.

  In the above embodiment, the outer shape of the outer peripheral surface 21h of the mold holder 21 is a circular shape in the horizontal section. However, the outer shape is not necessarily a perfect circle, and the outer shape of the outer peripheral surface may be bent so as to wave. Even if it is elliptical, it is sufficient if a V-shaped groove that can hold the cross roller 18 in a rollable manner can be formed.

  Further, in the above embodiment, the outer peripheral surface 21 h provided with the first V-shaped groove 21 f of the holder lower portion 21 b of the mold holder 21 and the inner peripheral surface 25 c of the holder support member 25 are formed so as to be substantially concentric. Although the example to do was demonstrated, it is not restricted to this.

  In the above-described embodiment, the example in which the roller gear cam unit 32 and the rolling unit 20 are connected by a belt to transmit power has been described. For example, the output shaft 35a of the roller gear cam 34, the mold holder 21, and the like. It is good also as a structure connected integrally or directly. In this case, since the power from the output shaft 35a of the roller gear cam 34 is directly transmitted to the mold holder 21, the eccentricity of the output shaft 35a is eliminated, and the punched rotor plates 60 can be stacked more accurately. It is.

  Moreover, in the said embodiment, although the example using the roller gear cam unit 32 was demonstrated as a positioning device of the lower metal mold | die 40a for rolling, it does not restrict to this.

1 press device, 2 body frame, 2a base, 2b superstructure,
3 Bolster, 4 Lower mold, 4a Lower mold for rolling, 5 Upper mold,
6 slide member, 7 guide material, 8 transport device, 9 uncoiler,
10 Roller, 16 Sealing material, 17 Cross roller bearing,
18 cross roller, 18a end face, 18b peripheral face, 18c peripheral edge part,
19 Cage, 19a Pocket hole, 20 Rolling unit,
21 Mold holder, 21a Upper part of the holder, 21b Lower part of the holder,
21c Die mounting part, 21d Parts accommodating part, 21e Step part, 21f 1st V-shaped groove,
21g slit, 21h outer peripheral surface, 21i inclined surface, 21j lower surface,
21k outer surface, 21m upper surface, 21n convex part, 22 flange, 23 bolt,
25 holder support member, 25a 2nd V-shaped groove, 25b slit, 25c inner peripheral surface,
26 upper support member, 26a inclined portion, 26b stepped portion, 26c expanded diameter portion,
26d upper surface, 26e spacer cover, 27 lower support member, 27a inclined portion,
28 bolts, 30 drive units, 32 roller gear cam units,
33 input shaft, 34 roller gear cam, 34a cam surface, 35 turret,
35a output shaft, 36 bearing (taper roller bearing),
37 housing, 38 pulley, 39 belt, 40 cross roller bearing,
41 cam follower, 43 turret flange, 44 pulley,
47 spacer, 50 rolled steel plate, 60 rotor plate,
x1 rolling axis, x2 rotation axis

Claims (9)

A rolling unit that rotates and laminates a plate material punched by cooperation of an upper mold and a lower mold,
A mold holder provided with a mold mounting section to which the lower mold is mounted, and a mold holder having a parts storage section for storing a punched plate-shaped part;
A holder support member having an inner peripheral surface surrounding an outer peripheral surface of the mold holder and rotatably supporting the mold holder;
The outer peripheral surface of the mold holder has a first V-shaped groove directly formed so as to be concentric with the rotation axis of the mold holder along the rotation direction of the mold holder,
The inner peripheral surface of the holder support member has a second V-shaped groove facing the first V-shaped groove,
A cross roller bearing is configured by interposing a plurality of rolling elements that roll in contact with the first V-shaped groove and the second V-shaped groove between the mold holder and the holder support member. Featured transshipment unit. The transshipment unit according to claim 1,
The mold holder has a reduced diameter part formed such that the outer diameter of the lower part is smaller than the outer diameter of the upper part,
The cross roller bearing is formed in the reduced diameter portion, and the upper part of the mold holder and the holder support member are arranged vertically with a space therebetween. A transshipment unit according to claim 2,
The distance between the upper part of the mold holder and the holder support member is smaller than the relative movement amount between the mold holder and the holder support member, where permanent deformation occurs in the cross roller bearing when the plate material is punched out. Transform unit characterized by that. A transshipment unit according to claim 2 or claim 3,
A detachable spacer is provided between the upper part of the mold holder and the holder support member,
The transposition unit, wherein the distance between the upper part of the mold holder and the holder support member is adjusted by the thickness of the spacer. The transshipment unit according to claim 4,
The transposing unit, wherein the spacer is provided along the circumferential direction of the holder support member and has a size that is not more than half of the entire circumference surrounding the reduced diameter portion of the mold holder. A transshipment unit according to any one of claims 2 to 5,
The holder support member has an upper member and a lower member that are divided vertically at the bottom of the second V-shaped groove,
The transposing unit, wherein the upper member and the lower member are fastened by a bolt along the rotation axis of the mold holder. The transshipment unit according to any one of claims 1 to 6,
A rolling unit, wherein a sealing material is provided above the rolling element between the outer peripheral surface of the mold holder and the inner peripheral surface of the holder support member.   8. A rolling device comprising a roller gear cam mechanism as a mechanism for rotating the die holder of the rolling unit according to claim 1 by a predetermined angle. The transversion device according to claim 8,
An output shaft of the roller gear cam mechanism is integrally formed with the mold holder.

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