JP5351679B2 - Vertical rotary plastic processing equipment - Google Patents

Abstract

The invention provides a vertical spinning plastic working machine, preventing bad influence caused by heat of a heating mechanism, etc. and replacing a forming die with simpler and low-cost structure. The working machine is provided with a mobile mechanism (8) making worked materials (3) on the forming die (2) spin and supported via a chaplet mechanism (6) and performing plastic working via a roller (7), and make the chaplet mechanism move at a working position (C) at the upper part of the forming die and a withdrawal position (E) withdrawing from the upper part, at an upper frame (42) of a base (5), an opening part (30) is formed by being provided with a first opening part corresponding to the working machine and a second opening part corresponding to the withdrawal position, allowing movement between the working position and the withdrawal position of the chaplet mechanism, in a withdrawal posture of the chaplet mechanism at the withdrawal position, the first opening part is opened for passing of the forming die and the second opening part is closed, in a working posture of the chaplet mechanism at the working position, the second opening part is opened and the first opening part is closed.

Description

  The present invention forms a work rotation mechanism that rotates a work piece placed on a forming die around a vertical axis, and a work material that is provided on the upper frame of the base and is rotated by the drive rotation mechanism. A tailstock mechanism that is supported from above the mold, a roller that abuts against a rotating workpiece and plastically processes the workpiece into a shape that conforms to the shape of the molding die, and a tailstock mechanism that includes a molding die. The present invention relates to a vertical rotary plastic working apparatus provided with a moving mechanism for moving between a working position where a workpiece can be supported above and a retreat position retracted from above a forming die.

2. Description of the Related Art Conventionally, in the above-described vertical rotary plastic working apparatus, a molding die is disposed on a main shaft that rotates around a vertical axis by an electric motor as a drive rotation mechanism, and a workpiece is placed on the molding die. The workpiece placed on the forming die is supported from above the axis of the main shaft by the tailstock mechanism (specifically, pressed and positioned from above), and the workpiece is fixed rotatably. Then, in this supported state, a roller is brought into contact with the workpiece rotated around the axis of the main shaft from the outer diameter side to be plastically processed into a shape that conforms to the shape of the mold (for example, see Patent Document 1). .
Such a vertical rotational plastic working apparatus can reduce the installation area of the apparatus, for example, compared to a horizontal rotational plastic working apparatus in which a molding die is disposed on a main shaft that rotates around a lateral axis. It is used effectively when there are restrictions.

  Here, in the vertical rotary plastic working apparatus, when the plastic processing of the workpiece is completed, the position where the workpiece can be extracted from the molding die (the molding die and the workpiece do not interfere with each other, In addition, it is necessary to raise the tailstock mechanism to a position where the workpiece and the tailstock mechanism do not interfere with each other. Therefore, it is necessary to ensure a large distance in the vertical direction of the hydraulic cylinder or the like as the pressurizing means constituting the tailstock mechanism, and the length (height) in the vertical direction of the tailstock mechanism is inevitably increased. It was something that grew.

  In the vertical rotary plastic working apparatus described in Patent Document 1, a tailstock mechanism for fixing a work piece in a rotatable state is provided with a work position at which the work material can be supported above the mold and a position above the mold. A moving mechanism for moving the base in the front-rear direction between the retracted position and the retracted position is provided. With this moving mechanism, when plastically processing a workpiece with a roller, the position of the tailstock mechanism is set to a processing position above the mold that can support the workpiece, while plastic processing of the workpiece is performed. When is finished, the position of the tailstock mechanism can be set to the retracted position retracted from above the mold. As a result, when the tailstock mechanism is moved from the machining position to the retracted position, it is only necessary to raise the tailstock mechanism to at least a position where it does not interfere with the workpiece placed on the mold. The moving distance that requires the mechanism to be raised can be made as small as possible. That is, when the workpiece after plastic working is extracted from the mold, it is not necessary to raise the tailstock mechanism excessively in consideration of interference between the workpiece extracted from the mold and the tailstock mechanism. Therefore, the length (height) in the vertical direction of the tailstock mechanism can be made relatively short, and the height of the vertical rotary plastic working apparatus itself does not need to be disassembled when the apparatus is conveyed (for example, For example, it can be suppressed to about 4 m or less.

International Publication No. 2006/038551

  However, in the vertical rotary plastic working apparatus disclosed in Patent Document 1, for example, the workpiece is plastic-processed while being heated by the heating means, so that the heat by the heating means and the heat by the heated workpiece are processed. As a result, heat is trapped around the work piece and the like, and the mechanism constituting the vertical rotary plastic working apparatus may be adversely affected. Therefore, in the prior art, there is room for improvement regarding the heat remaining in the apparatus.

  Further, in the vertical rotary plastic working apparatus disclosed in Patent Document 1, for example, since the installation area of the apparatus is configured to be relatively small, an apparatus for replacing a relatively heavy mold is provided. It is difficult to install inside the mold, and when replacing the mold, it is necessary to carry in / out the mold from the outside of the apparatus. In this case, it is necessary to prepare a large-scale facility such as a robot that can carry in and out the mold, and there is a problem that extra labor and cost are required.

  The present invention has been made in view of the above-mentioned problems, and its purpose is a vertical rotation in which a mold can be replaced with a relatively simple and inexpensive configuration while preventing adverse effects due to heat from a heating means or the like. It is in providing a plastic working apparatus.

In order to achieve the above object, a vertical rotary plastic working apparatus according to the present invention comprises:
A drive rotation mechanism for rotating the workpiece placed on the mold around the vertical axis; and
A tailstock mechanism that is provided on an upper frame of a base and supports the workpiece rotated by the drive rotation mechanism from above the mold;
A roller that abuts against the workpiece in rotation and plastically processes the workpiece into a shape that conforms to the shape of the mold;
Vertical rotary plastic working provided with a moving mechanism for moving the tailstock mechanism between a working position where the workpiece can be supported above the mold and a retracted position retracted from above the mold It is a device, and its characteristic configuration is
Heating means for heating the workpiece to be plastically processed by the roller;
In the movement of the tailstock mechanism from the processing position to the retracted position, an opening that allows a part of the tailstock mechanism to move is formed in the upper frame of the base, and the opening is formed at the processing position. And a second opening corresponding to the retracted position, and
With the retracting posture in which the tailstock mechanism is located at the retracted position, the first opening is formed so that the molding die can pass therethrough, and the second opening is closed,
In the processing posture in which the tailstock mechanism is located at the processing position, the second opening is opened and the first opening is closed .
In the processing posture, a closing means for closing the second opening is provided .

According to the above characteristic configuration, since the opening that allows the movement between the machining position and the retracted position of the tailstock mechanism by the moving mechanism is formed in the upper frame of the base, the workpiece is plastically processed. it can be dissipated from the device (heat in heating the workpiece by applying heat means) outside the apparatus through the opening heat generated when. Specifically, the opening includes a first opening corresponding to a processing position where the workpiece can be supported above the molding die, and a second opening corresponding to the retreating position retracted from above the molding die. I have. Then, in the retracted position where the tailstock mechanism is located at the retracted position, the first opening corresponding to the machining position is formed at the opening and the second opening corresponding to the retracted position is closed, while the tailstock is closed. The mechanism is configured so that the second opening is formed in the opening and the first opening is closed while the mechanism is positioned at the processing position. As a result, there is an opening in the upper frame of the base that can release heat regardless of whether the tailstock mechanism is in the processing position (processing position) or the retracted position (retracted position). As a result, the heat in the apparatus can be radiated to the outside of the apparatus. Therefore, it is possible to prevent an adverse effect on the equipment in the apparatus due to the heat weight.
Further, when the tailstock mechanism is in the retracted position (retracted posture), that is, the first opening corresponding to the machining position is opened among the openings, and the second opening corresponding to the retracted position is closed by the tailstock mechanism. In this case, the first opening is formed in a size that allows the mold to pass through the first opening. Thereby, when it is desired to replace the molding die itself (for example, when the workpiece is extracted after the plastic processing of the workpiece is finished), for example, when the workpiece of another shape is molded, The molding die attached to the drive rotation mechanism can be lifted upward by a crane or the like positioned above the base and taken out of the apparatus through the first opening. Similarly, even when a new mold is attached to the drive rotation mechanism, the new mold is lowered from outside the apparatus by a crane or the like, moved into the apparatus through the first opening, and driven. Can be attached to a rotating mechanism. Therefore, it is possible to replace a relatively heavy mold with a crane having a relatively simple and inexpensive configuration.
Therefore, in the vertical rotary plastic working apparatus, the mold can be replaced with a relatively simple and inexpensive configuration while preventing adverse effects on the equipment in the apparatus due to the heat of the heating means or the like.
Furthermore, when plastically processing a workpiece, for example, warm or hot processing can be performed while the workpiece is heated by a heating means, and plastic processing can be performed more easily and accurately. .
In particular, when the tailstock mechanism is in a machining position located at the machining position, the first opening is closed by the tailstock mechanism, but the second opening is in an open state. By closing the two openings, it is possible to prevent the heat at the time of plastic processing of the workpiece from being radiated to the outside of the apparatus through the second opening, and to better perform the plastic processing of the workpiece. be able to.

  A further characteristic configuration of the vertical rotary plastic working apparatus according to the present invention is that the roller includes a pair of rollers arranged to face each other, and the molding die is arranged between the pair of rollers. .

According to the above characteristic configuration, the pair of rollers are arranged in a state of being opposed to each other with the molding die interposed therebetween, so plastic processing can be simultaneously performed from different locations on the molding die by the pair of rollers, and easier. Desired plastic working can be performed accurately and quickly.
Further, when the pair of rollers are arranged in a state of being opposed to each other with the molding die interposed therebetween, it is necessary to provide a driving mechanism for the roller at a place where these rollers are arranged, There is almost no space, and it tends to be a relatively complicated configuration. In such a case, for example, there is a risk of hindering work such as replacement of the mold. However, as described above, the opening in the upper frame of the base is formed with the first opening that can pass through the mold when the tailstock mechanism is in the retracted position (retracted posture). The mold can be exchanged through one opening, and even if there is a pair of rollers (including a roller drive mechanism), the mold can be exchanged easily. There will be no hindrance to work.
Therefore, the plastic working of the workpiece can be performed more easily and accurately, and the mold can be replaced more easily.

  A further feature of the vertical rotary plastic working apparatus according to the present invention is that, in the upper frame around the opening, the opening is extended to the front side of the base of the opening, and the opening is extended to the front side of the base. It is in the point provided with the extended opening.

  According to the above characteristic configuration, the opening is in front of the base in the front side part (front beam part) of the opening part (first opening part) in the periphery (beam part) of the opening part in the upper frame of the base. Since the extended opening is provided on the side, when the mold is exchanged, for example, in the case of using a crane positioned above the base, for example, when the mold is put in and out through the first opening, The mold can be moved and moved by the crane and the mold can be taken in and out more easily without interfering with the front part of the base (front beam part).

Front view of vertical spinning machine Plan view of vertical spinning machine Side view of vertical spinning machine Partial plan view showing movement of the tailstock mechanism by the moving mechanism An enlarged plan view of the main part of a vertical spinning machine (A) The figure which shows the movement concept of the tailstock mechanism by a movement mechanism, (b) The figure which shows the exchange concept of the shaping | molding die by a crane Schematic sectional view showing the configuration of the tailstock mechanism and the moving mechanism Schematic sectional view showing the configuration of a tailstock mechanism according to another embodiment Schematic plan view showing the configuration of the upper fixed frame according to another embodiment Schematic plan view showing the configuration of the closing means

  Hereinafter, a vertical spinning processing apparatus 1 as an example of a vertical rotary plastic processing apparatus according to the present application will be described with reference to FIGS. 1 to 7. In the description, first, the schematic configuration of the vertical spinning machine 1 will be described, and then the configuration of the opening 30 formed in the tailstock mechanism 6 and the base 5 which is the characteristic configuration of the present application will be described.

[Schematic configuration of vertical spinning machine]
As shown in FIGS. 1 to 3, the vertical spinning processing apparatus 1 includes a drive rotation mechanism 4 that rotates a workpiece 3 placed on a mold 2 around a vertical axis P, and a base 5. A top support frame 42 (which is an example of an upper frame, details of which will be described later), and supports a workpiece 3 rotated by a drive rotation mechanism 4 from above the mold 2; A roller 7 that contacts the workpiece 3 in a rotating state and plastically processes the workpiece 3 into a shape along the shape of the mold 2 and a tailstock mechanism 6 are disposed above the mold 2. 3 is provided with a moving mechanism 8 that moves between a processing position C capable of supporting 3 and a retracted position E retracted from above the mold 2.
In the following description, the vertical direction of the vertical spinning machine 1 parallel to the vertical axis P is the Z direction, and the vertical direction of the vertical spinning machine 1 perpendicular to the Z direction (in FIG. The horizontal direction (when viewed from the side) will be described as the X direction, and the longitudinal direction of the vertical spinning machine 1 perpendicular to the Z direction (the depth direction when the apparatus is viewed from the front in FIG. 1) is the Y direction.

[Base structure]
As shown in FIGS. 1 to 5, the base 5 of the vertical spinning processing apparatus 1 includes a lower fixing frame 40 provided at the lower part of the apparatus and four columnar fixing frames 41 erected on the lower fixing frame 40. And an upper fixed frame 42 disposed above the four columnar fixed frames 41.
The lower fixed frame 40 is formed in a substantially rectangular shape in a front view and a plan view. The lower fixed frame 40 is integrally fixed and arranged on an upper part of a flat plate-like device mounting frame 44 arranged via a plurality of legs 43 that can be adjusted in height with the floor surface F. Yes. On the upper part of the lower fixed frame 40, a headstock 10 is provided on which a main shaft 9 for placing and rotating the molding die 2 is placed in the center portion when viewed from the front (see FIG. 1). As shown in FIGS. 2 and 5, the main shaft 9 is disposed in a state of being biased toward the front surface side (−Y direction side) of the lower fixed frame 40 in plan view.
As shown in FIGS. 1, 3, and 5, the columnar fixing frame 41 is a pair of bars disposed on the front side (−Y direction side) of the lower fixing frame 40 at a position that is symmetrical with respect to the main shaft 9. The columnar fixed frame 41a and a pair of columnar fixed frames 41b disposed on the rear surface side (+ Y direction side) of the lower fixed frame 40 at positions symmetrical with respect to the main shaft 9 are provided.
As shown in FIG. 1, the upper fixed frame 42 is formed in a flat plate shape when viewed from the front, and is arranged on the upper portion of the columnar fixed frame 41 while being supported by the four columnar fixed frames 41. A plurality of reinforcing ribs 45 that reinforce the upper fixed frame 42 are provided on the upper portion of the upper fixed frame 42 along the left-right direction (X direction) and the front-rear direction (Y direction).
In addition to the base 5, predetermined equipment is placed on the upper part of the equipment mounting base 44. For example, as shown in FIG. 1, a spindle motor M <b> 1 for rotating the spindle 9 around the vertical axis P is disposed on the rear side (+ Y direction side) of the lower fixed frame 40. A hydraulic pressure generating device 11 that generates hydraulic pressure used in the vertical spinning machine 1 is placed on the left side (−X direction side) of the spindle motor M1. Further, on the right side (+ X direction side) of the spindle motor M1, a control device case 12 containing a control device (not shown) is placed in a state where vibration from the vertical spinning processing device 1 is not transmitted. Yes.
And the base 5 fixed to the upper part of the apparatus mounting base 44 and the said predetermined | prescribed apparatus are enclosed by the interruption | blocking cover 46, The external space and internal space of the vertical spinning processing apparatus 1 are covered with the said interruption | blocking cover 46. Is configured to be blocked. The blocking cover 46 is formed in a flat plate shape and is disposed on a frame member provided along the outer periphery of the device mounting base 44 formed in a rectangular shape, and is erected on the outer peripheral portion of the device mounting base 44. (See FIGS. 1 to 3).

(Drive rotation mechanism)
The drive rotation mechanism 4 has a main shaft 9 on which the molding die 2 is placed, a main shaft 9 for rotating the main shaft 9 around the vertical axis P, and a workpiece 3 attached to the molding die 2 together with the main shaft 9. The motor M1 is provided. As a result, the workpiece 3 can be spun (plastically worked) while the molding die 2 is disposed on the main shaft 9 and the roller 7 is in contact with the molding die 2. In the case of this example, the workpiece 3 is a circular (plan view) wheel material that is processed on one end side (upper end side shown in FIG. 1). Accordingly, the drive rotation mechanism 4 is configured to rotate the workpiece 3 that is plastically processed along the shape of the mold 2 around the vertical axis P.

[Roller and roller drive mechanism]
The vertical spinning machine 1 includes a roller 7 that is placed on a main shaft 9 and abuts against a workpiece 3 that rotates about a vertical axis P, and spins the workpiece 3 (plastic processing). It is configured. The roller 7 is configured to follow and rotate about the rotation axis Q as the workpiece 3 rotates.
Further, the vertical spinning processing apparatus 1 is configured such that the roller 7 moves in the X-axis direction (the left-right direction in FIG. 1) approaching and separating from the vertical axis P (main shaft 9), and the Z parallel to the vertical axis P. A biaxial positioning mechanism 13 (an example of a roller driving mechanism) for positioning in two axial directions (the vertical direction in FIG. 1) and 2 to plastically process the workpiece 3 into a shape along the shape of the mold 2. A control device for operating the shaft positioning mechanism 13 and the like is provided.
That is, in the vertical spinning processing apparatus 1, the control device stores in advance information to maintain the position of the roller 7 with respect to the workpiece 3 at a position suitable for processing, and this information is stored in the biaxial positioning mechanism. 13, the processing can be performed while appropriately setting the position of the roller 7.

Briefly describing the biaxial positioning mechanism 13, the roller 7 is held by the holding frame 14, and the position of the roller 7 is positioned by appropriately positioning the holding frame 14.
With respect to the X direction which is the approaching / separating direction with respect to the vertical axis P, the holding frame 14 can be moved and positioned in the X direction with respect to the main shaft 9 and the columnar fixed frame 41 by the X-axis motor M2. .
With respect to the Z direction parallel to the vertical axis P, the holding frame 14 can be moved and positioned in the Z direction with respect to the main shaft 9 and the columnar fixed frame 41 by the Z-axis motor M3.

  In this example, a pair of rollers 7a and 7b is provided as the roller 7, and the pair of rollers 7a and 7b are respectively held by the pair of left and right holding frames 14 with the main shaft 9 (molding die 2) being opposed to the left and right. Has been. Therefore, the pair of biaxial positioning mechanisms 13 corresponding to the respective rollers 7a and 7b are also arranged on the lower fixed frame 40 in a state of facing the left and right with the main shaft 9 (molding die 2) interposed therebetween. In this way, with the two-axis positioning mechanism 13 arranged in a pair on the left and right with the main shaft 9 interposed therebetween, the lower part of the two-axis positioning mechanism 13 is fixed to the lower fixed frame 40, and its side part is the holding frame 14. And the fixing member 41 via the connecting member 15, the rigidity of the vertical spinning machine 1 is sufficiently increased even when a large force is applied during spinning of the workpiece 3 by the roller 7. It has a configuration that can be secured.

[Tailstock mechanism]
As shown in FIGS. 1, 4, 7, etc., the tailstock mechanism 6 supports and fixes the workpiece 3 attached to the mold 2 rotated together with the main shaft 9 by the drive rotation mechanism 4 from above. It is a mechanism to do. The tailstock mechanism 6 is disposed on the upper fixed frame 42 above the main shaft 9 (molding die 2).
The tailstock mechanism 6 is in contact with the workpiece 3 and supports a rotation support portion 20 that supports the workpiece 3 from above, and a hydraulic cylinder portion 21 that moves at least the rotation support portion 20 in the vertical direction (Z direction). An example of a pressurizing means) and a fixed support portion 22 that rotatably supports the rotation support portion 20 are configured.

The rotation support portion 20 is a member that is disposed at the lowermost portion of the tailstock mechanism 6 and abuts on the workpiece 3 and is configured to be driven and rotated by the rotation of the workpiece 3.
The hydraulic cylinder portion 21 is arranged at the top of the tailstock mechanism 6 and moves up and down by a piston shaft (not shown) provided in the cylinder (not shown) extending and retracting from the cylinder. It is configured as follows. A continuously arranged bearing 23 is provided on the outer periphery of the lower end portion of the piston shaft so that the rotation support portion 20 can be driven and rotated together with the workpiece 3.
The fixed support portion 22 is provided between the rotation support portion 20 and the hydraulic cylinder 21 and is configured to support the rotation support portion 20 together with the workpiece 3 so as to be driven to rotate. Further, the fixed support portion 22 is provided with an extension portion 24 for providing a fitting member 26 of the moving mechanism 8 described later on the upper surface (see FIGS. 4 and 7). The extension part 24 is formed in a substantially square shape in plan view, and forms the outermost contour of the tailstock mechanism 6 in the front-rear direction (Y direction) and the left-right direction (X direction).

[Movement mechanism]
As shown in FIGS. 4, 6, and 7, the moving mechanism 8 is a mechanism that allows the tailstock mechanism 6 to move in the front-rear direction (Y direction) of the vertical spinning processing apparatus 1. The moving mechanism 8 is disposed on the upper surface of the pair of rail members 25 disposed on the lower surface of the upper fixed frame 42 and the pair of extending portions 24 of the tailstock mechanism 6, and is engaged with the rail member 25. The fitting member 26 and a drive unit 27 that moves the tailstock mechanism 6 along the fitting member 26 are configured.
The rail member 25 is a long member that is long in the front-rear direction (Y direction), and is a member that includes a protruding portion 25 a that protrudes downward (−Y direction) from the lower surface of the upper fixed frame 42. The rail member 25 has a rail-side recess 25b formed in the center in the vertical direction on both side surfaces in a front view.
The fitting member 26 is a long member that is long in the front-rear direction (Y direction), and a fitting recess 26 a having a fitting surface corresponding to the shape of the protruding portion 25 a of the rail member 25 and the rail-side recess 25 b is formed. . The protrusion 25 a of the rail member 25 is fitted into the fitting recess 26 a, and the tailstock mechanism 6 is supported by the upper fixed frame 42 via the rail member 25.
The drive unit 27 includes a pair of drive hydraulic cylinders 27a and a pair of distal end portions 27c that further extend in the left-right direction (X direction) from the extension portion 24 of the tailstock mechanism 6. By connecting one end of the piston rod 27b of the drive hydraulic cylinder 27a to the distal end portion 27c, the tailstock mechanism 6 is moved in the front-rear direction (Y direction) along the fitting recess 26a by the expansion and contraction of the drive hydraulic cylinder 27a. be able to.
That is, as shown in FIG. 4, the moving mechanism 8 is configured such that the tailstock mechanism 6 can support the workpiece 3 above the main shaft 9 (molding die 2) at a processing position C (the tailstock shown in FIG. 4A). The position between the mechanism 6 and the retreat position E (the position of the tailstock mechanism 6 shown in FIG. 4B) retracted from above the mold 2 is configured to be movable (distance N).

[Heating means]
The vertical spinning processing apparatus 1 is provided with a burner 16 (an example of a heating means) for heating the workpiece 3 on the main shaft 9 (molding die 2), and is a flame formed by the burner 16, The workpiece 3 can be appropriately heated (for example, to about 300 ° C.). As shown in FIGS. 1 and 3, the heating portion by the burner 16 is set at a circumferential position different from the contact portion where the roller 7 contacts the workpiece 3. In the present embodiment, three burners 16 are arranged in the vertical direction (Z direction). However, the number, arrangement, and the like can be changed as appropriate. Further, instead of the burner 16 as the heating means, for example, a heater for performing dielectric heating can be used.

When the tailstock mechanism 6 is at the processing position C, a closing degree adjusting means 80 (an example of a closing means) capable of adjusting the closing degree of the second opening 30b in the opened state is provided.
For example, as shown in FIG. 10, the closing degree adjusting means 80 includes a pair of rectangular door members 81a and 81b and a drive mechanism (not shown) that opens and closes the door members 81a and 81b. Yes. The door member 81a is disposed on the upper portion of the upper fixed frame 42 adjacent to the right side (+ X direction side) of the second opening 30b, and can be closed by the drive mechanism to close the right half of the second opening 30b. It is configured. Similarly, the door member 81b is disposed on the upper portion of the upper fixed frame 42 adjacent to the left direction side (−X direction side) of the second opening 30b, and is driven by the drive mechanism to the left of the second opening 30b. It is configured to be able to close half. The closing degree of the second opening 30b is configured to be appropriately adjustable by adjusting the moving distance of the door members 81a and 81b. FIG. 10 shows a state in which the door members 81a and 81b block the second opening 30b, and as shown by arrows, the door members 81a and 81b are left and right up to the positions indicated by two-dot chain lines. It is possible to move in the direction (X direction).
The above is the schematic configuration of the vertical spinning processing apparatus 1 according to the present application. Hereinafter, the configuration of the opening 30 formed in the tailstock mechanism 6 and the base 5 which is the feature of the present application will be described.

〔Aperture〕
As described above, the base 5 includes the lower fixed frame 40, the columnar fixed frame 41, and the upper fixed frame 42. As shown in FIG. 4, the upper fixed frame 42 includes the tailstock mechanism 6. In the movement from the machining position C to the retracted position E, an opening 30 is formed that allows a part of the tailstock mechanism 6 to move. Specifically, the upper fixed frame 42 communicates with the inside and the outside of the vertical spinning processing device 1 in the vertical direction (Z direction), and has a rectangular shape that is long in the front-rear direction (Y direction) in plan view. An opening 30 that opens is formed.
Here, the pair of rail members 25 described above are arranged in parallel with the front-rear direction (Y direction) on the lower surface of the upper fixed frame 42 adjacent to the end of the opening 30 in the left-right direction (X direction). Yes. A fitting member 26 disposed on the upper surface of the extension portion 24 of the tailstock mechanism 6 is fitted to the rail member 25. Then, the fixed support portion 22 including the extension portion 24 of the tailstock mechanism 6 is disposed on the lower side (−Z direction side) than the upper fixed frame 42 (opening portion 30), and is provided above the fixed support portion 22. The hydraulic cylinder 21 to be protruded above the upper fixed frame 42. Therefore, the presence of the opening 30 allows the hydraulic cylinder 21 of the tailstock mechanism 6 to move within the opening 30 without interfering with the upper fixed frame 42. The plurality of reinforcing ribs 45 erected on the upper portion of the upper fixed frame 42 are also configured not to exist on the upper portion of the opening 30.

The opening 30 has a first opening 30a that opens above the main shaft 9 (molding die 2) corresponding to the machining position C and a main shaft 9 (molding die 2) corresponding to the retracted position E in plan view. And a second opening 30b that opens at a position retracted from above. In the example shown in FIG. 4, the first opening 30a and the second opening 30b are formed so that the opening 30 is roughly divided into two equal parts in the front-rear direction (Y direction).
The opening 30 is driven by the moving mechanism 8 so that the tailstock mechanism 6 moves in the opening 30 between the machining position C and the retracted position E, so that the tailstock mechanism 6 is moved to the retracted position E. In the retracted position, the first opening 30a is formed, the second opening 30b is closed, and the second opening 30b is opened in the processing posture in which the tailstock mechanism 6 is located at the processing position C. In addition, the first opening 30a is configured to be closed. That is, even if the tailstock mechanism 6 moves in the opening 30 between the machining position C and the retracted position E, either the first opening 30a or the second opening 30b is used as the opening 30 itself. It will be open. In practice, the first opening 30a and the second opening 30b are configured to be closed by an extending portion 24 formed in a substantially square shape in a plan view of the tailstock mechanism 6.

  The first opening 30a is formed when the tailstock mechanism 6 is in the retracted position, but is formed to have a size that allows the molding die 2 to pass through the first opening 30a. Specifically, as shown in FIG. 4, the distances S1 and S2 in the front-rear direction (Y direction) and the left-right direction (X direction) of the first opening 30a are formed larger than the diameter S3 of the mold 2. Has been.

  Next, an operation state in which the workpiece 3 is spun using the vertical spinning machine 1 will be described.

  As shown in FIGS. 1 and 4A, the hydraulic cylinder is placed with the workpiece 3 placed on the upper part of the main shaft 9 via the molding die 2 and the tailstock mechanism 6 positioned at the machining position C. The rotation support part 20 is moved downward by the part 21, and the lower surface of the rotation support part 20 is brought into contact with the upper surface of the workpiece 3 to be supported and fixed (indicated by a two-dot chain line in FIG. 1). When the main shaft 9 and the workpiece 3 are rotated by the main shaft motor M <b> 1 of the drive rotation mechanism 4, the rotation support portion 20 that comes into contact with the workpiece 3 is driven to rotate.

In this state, the pair of rollers 7a and 7b are brought into contact with the workpiece 3 from the outer peripheral side of the workpiece 3 while the workpiece 3 is heated (for example, about 300 ° C.) by the burner 16 as necessary. As a result, spinning is performed into a desired shape following the shape of the mold 2. Thereby, it can spin simultaneously from a different location with respect to the shaping | molding die 2 with a pair of roller 7a, 7b, and can process more easily, correctly, and rapidly. At this time, heat when the workpiece 3 is heated by the burner 16 can be radiated from the inside of the apparatus to the outside of the apparatus through the second opening 30b. Therefore, it is possible to prevent an adverse effect on the equipment in the apparatus due to the heat weight.
Further, when the tailstock mechanism 6 is in the processing posture located at the processing position C, the degree of closing of the second opening 30b is adjusted by the closing degree adjusting means 80, so that the workpiece 3 is plastically processed. The degree to which heat is radiated from the inside of the apparatus to the outside of the apparatus through the second opening 30b can be adjusted. For example, even when the amount of heating by the burner 16 is constant, by adjusting the degree of closure of the second opening 30b, the temperature around the workpiece 3 is suitable for processing the workpiece 3, It becomes possible to adjust the temperature so as not to damage the equipment in the apparatus. Alternatively, the second opening 30b may be completely closed to prevent heat from being dissipated outside the apparatus during the processing of the workpiece 3, and the workpiece may be plastically processed.

When the spinning process ends (see FIG. 6A), the tailstock mechanism 6 is raised and separated from the workpiece 3 and moved from the upper side of the main shaft 9 to the retracted position E (FIG. 4B). FIG. 6 (b)).
At this time, since the tailstock mechanism 6 does not exist above the workpiece 3, the distance by which the rotation support portion 20 of the tailstock mechanism 6 is lifted is set in a state where the rotation support portion 20 is placed on the mold 2. The distance to the position where the workpiece 3 does not interfere can be set. As a result, when the workpiece 3 after plastic working is extracted from the mold 2, the tailstock mechanism 6 is added in consideration of interference between the workpiece 3 extracted from the mold 2 and the tailstock mechanism 6. There is no need to raise it. Therefore, the vertical length (height) of the tailstock mechanism 6 can be made relatively short, and the height of the vertical spinning processing device 1 itself does not need to be disassembled when the device 1 is transported, for example. It is possible to suppress to a level (for example, about 4 m or less from the floor surface F). In FIG. 6, the distance by which the tailstock mechanism 6 is raised (the distance between the lower surface of the rotation support portion 20 in the processing posture and the lower surface of the rotation support portion 20 in the retracted posture) is about the thickness of the workpiece 3. The distance L is set to be a separated distance. With this configuration, even when the tailstock mechanism 6 is located at the retracted position E, a mechanism (not shown) for attaching or detaching the workpiece 3 to or from the mold 2 is provided below the tailstock mechanism 6. It is possible to prevent interference between the workpiece 3 and the tailstock mechanism 6 while shortening the rising distance of the tailstock mechanism 6 as much as possible.
When the spinning process is completed, the tailstock mechanism 6 moves to the retracted position E, so the first opening 30a, which is the upper part of the workpiece 3, is opened, and the workpiece 3 is heated by the burner 16. The heat at the time can be radiated from the inside of the apparatus to the outside of the apparatus through the first opening 30a. Therefore, it is possible to prevent an adverse effect on the equipment in the apparatus due to the heat weight.

  The spinning workpiece 3 is removed from the mold 2 by a mechanism (not shown), and is carried out of the apparatus by a transport device (not shown). Next, the workpiece 3 before processing is carried in by the conveying device and attached to the mold 2 by a mechanism (not shown), the tailstock mechanism 6 moves to the processing position C, and the workpiece 3 is subjected to spinning processing. Is called. In this way, the spinning of the workpiece 3 is performed sequentially.

On the other hand, there is a case where it is desired to replace the molding die 2 placed on the main shaft 9 when molding the workpiece 3 having a different shape after spinning. In this case, in the vertical spinning processing apparatus 1 according to the present application, the tailstock mechanism 6 is moved to the retracted position E, and the first opening 30a that is the upper part of the mold 2 is opened. In this state, the movable crane K attached to the ceiling or the like is moved above the first opening 30a (see FIG. 6B).
Although this crane K is a well-known crane, it is comprised so that the shaping | molding die 2 can be moved to an up-down direction (Z direction) via the 1st opening part 30a. Thereby, the shaping | molding die 2 mounted in the main axis | shaft 9 can be raised upwards, and it can take out out of an apparatus through the 1st opening part 30a. Similarly, even when a new mold 2 is attached to the main shaft 9, the new mold 2 is lowered from outside the apparatus by the crane K and moved into the apparatus via the first opening 30a. The main shaft 9 can be attached. Therefore, it is possible to replace the relatively heavy mold 2 with the crane K having a relatively simple and inexpensive configuration.
In addition, in the vertical spinning processing apparatus 1 of the present application, a biaxial positioning mechanism 13 for the rollers 7a and 7b is provided at a position where the pair of rollers 7a and 7b are disposed (left and right positions of the main shaft 9). The structure is relatively complex with almost no free space. However, by exchanging the molding die 2 through the first opening 30a by the crane K in this way, even if the biaxial positioning mechanism 13 of the rollers 7a and 7b is present, the molding die 2 can be replaced. This work can be easily performed, and the work is not hindered. Therefore, the spinning process of the workpiece 3 can be performed more easily and accurately, and the mold 2 can be easily replaced.

[Another embodiment]
Next, another embodiment will be described.
(A) The structure which adds the holding | grip mechanism 70 which hold | grips the workpiece 3 to the structure of the tailstock mechanism 6 in the said embodiment can also be employ | adopted. The configuration will be described with reference to FIG.
The gripping mechanism 70 includes a claw member 71 having a curved shape that grips the workpiece 3 and an expansion / contraction mechanism 72 including an air cylinder for opening and closing the claw member 71.
The claw member 71 is attached to an attachment member 73 disposed on the outer peripheral surface of the fixed support portion 22 provided above the rotation support portion 20 of the tailstock mechanism 6 so that one end thereof becomes a fulcrum 71a. . The distal end of the telescopic mechanism 72 is attached to an action point 71b that is appropriately spaced from the fulcrum 71a. The telescopic mechanism 72 has a tip connected to the action point 71 b and the other end 72 a fixed to a proper position of the tailstock mechanism 6. A plurality of sets of claw members 71 and expansion / contraction mechanisms 72 are arranged on the circumference of the fixed support portion 22, and in the example shown in FIG.
The gripping mechanism 70 opens the claw member 71 by contracting the expansion / contraction mechanism 72, and closes the claw member 71 by extending the expansion / contraction mechanism 72 from the state to hold the workpiece 3. The claw member 71 is closed by extending the mechanism 72, and the claw member 71 is opened by releasing the expansion / contraction mechanism 72 from the state to release the workpiece 3.
Thus, in the spinning process, the gripping mechanism 70 is operated together with the vertical movement of the tailstock mechanism 6 to attach the workpiece 3 to the molding die 2, and after the machining is completed, the workpiece 3 is attached to the molding die 2. The material 3 can be extracted and transferred to the conveying device, and the supply and discharge of the workpiece 3 with respect to the mold 2 can be automated.

(B) In the above embodiment, the upper fixed frame 42 is configured on a flat plate, and the upper fixed frame 42 has a rectangular shape that is long in the front-rear direction (Y direction) in a state of being surrounded by beam portions in plan view. Although the opening 30 is formed, the shape of the opening 30 is not limited to such a shape.
For example, as shown in FIG. 9, in the above embodiment, the base front side portion (front side) of the opening portion 30 (first opening portion 30 a) among the four sides (beam portions) around the opening portion 30 in the upper fixed frame 42. The beam portion) is modified so that the opening 30 (first opening 30a) includes an extended opening 31 that is extended to the front side of the base (the −Y direction side). It is also possible to employ the upper fixed frame 42 a having a configuration including the expanded opening 30. With this configuration, when the molding die 2 is exchanged, for example, when the molding die 2 is taken in and out through the first opening 30a using the crane K, the molding die 2 and the crane K are used as the base. Without interfering with the front beam portion formed on the front side portion, it is possible to carry and move the molding die 2 by the crane K and take in and out the molding die 2 more easily and simply. In this case, although not shown, the plurality of reinforcing ribs erected on the upper part of the upper fixed frame 42a correspond to the upper part of the expansion opening 31 of the upper fixed frame 42a in plan view so as not to hinder the movement of the crane K. It is not formed in the place to do. Even if the upper fixing frame 42a having the opening 30 whose opening is expanded by the expansion opening 31 is employed, the upper fixing frame 42a in the left-right direction (X direction) of the expansion opening 31 is adopted. Since a pair of columnar fixing frames 41a (see FIGS. 3 and 5) are arranged symmetrically with respect to the expansion opening 31 at the lower part of the frame, the structure is configured to ensure sufficient rigidity. Yes.

( C ) In the above embodiment, the four columnar fixing frames 42 are provided. However, the number of arrangements and the arrangements are sufficient if the rigidity (strength) of the vertical spinning machine 1 can be sufficiently secured. The position and the like can be changed as appropriate.

( D ) In the above embodiment, the case where the vertical rotary plastic processing apparatus is the vertical spinning processing apparatus 1 has been shown. However, while rotating the workpiece 3 around the vertical axis P, the workpiece 3 The structure of the present invention can be adopted in an apparatus that performs plastic working by bringing a certain workpiece into contact with each other.

( E ) In the above embodiment, the drive rotation mechanism 4 for rotating the workpiece 3 around the vertical axis P is provided, and the rotation of the roller 7 is driven by the rotation of the workpiece 3. Although the configuration of the rotation form is adopted, the workpiece 3 may be rotated from the roller 7 side.

  As described above, it has been possible to provide a vertical rotary plastic working apparatus capable of exchanging a mold with a relatively simple and inexpensive structure while preventing adverse effects due to heat of a heating means or the like.

1 Vertical spinning machine (vertical rotary plastic machine)
2 Mold 3 Workpiece 4 Drive rotation mechanism 5 Base 6 Tail push mechanism 7 Roller 7a First roller (roller)
7b Second roller (roller)
8 Moving mechanism 16 Burner (heating means)
30 Opening 30a First Opening 30b Second Opening 31 Expansion Opening 42 Upper Fixed Frame (Upper Frame of Base)
80 closure adjustment means (closing busy means)
C Machining position E Retraction position P Vertical axis

Claims (3)

A drive rotation mechanism for rotating the workpiece placed on the mold around the vertical axis; and
A tailstock mechanism that is provided on an upper frame of a base and supports the workpiece rotated by the drive rotation mechanism from above the mold;
A roller that abuts against the workpiece in rotation and plastically processes the workpiece into a shape that conforms to the shape of the mold;
Vertical rotary plastic working provided with a moving mechanism for moving the tailstock mechanism between a working position where the workpiece can be supported above the mold and a retracted position retracted from above the mold A device,
Heating means for heating the workpiece to be plastically processed by the roller;
In the movement of the tailstock mechanism from the processing position to the retracted position, an opening that allows a part of the tailstock mechanism to move is formed in the upper frame of the base, and the opening is formed at the processing position. And a second opening corresponding to the retracted position, and
With the retracting posture in which the tailstock mechanism is located at the retracted position, the first opening is formed so that the molding die can pass therethrough, and the second opening is closed,
In the processing posture in which the tailstock mechanism is located at the processing position, the second opening is opened and the first opening is closed .
A vertical rotary plastic working apparatus provided with closing means for closing the second opening in the processing posture .   The vertical rotary plastic working apparatus according to claim 1, wherein the roller includes a pair of rollers disposed so as to face each other, and the molding die is disposed between the pair of rollers. 3. The vertical rotation according to claim 1, wherein the opening is provided with an extended opening in which the opening is extended to the front side of the base of the upper part of the upper frame around the opening. Plastic processing equipment.

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