JP3163714B2 - Inner stand type molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an inner stand type molding machine used for forming an electric resistance welded tube, etc., which makes it easy to remove a side roll from the inner stand and to improve the positioning accuracy of the side roll. It is something that can be improved.

[0002]

2. Description of the Related Art One of the molding machines used for molding ERW pipes is an inner stand type molding machine. The horizontal rolls and side rolls necessary for molding ERW pipes are incorporated in an inner stand in advance. In addition, the roll change time is shortened by performing the roll change for each inner stand according to the change of the pipe size.

In such an inner stand type molding machine,
Rolls can be changed outside the line, and preparations can be made for the next roll change.However, in order to efficiently perform roll change outside the line, the roll can be easily attached to and detached from the inner stand. So that the side roll can be inserted and removed in the vertical direction.

For example, in an inner stand molding machine disclosed in Japanese Patent Publication No. 58-55846, as shown in FIGS. The roll is the inner stand 2 via each roll chock 3 and 4.
The left and right side rolls are fitted into the respective side roll yokes 6 and 7 from above, and are mounted on the chock receiving seat 8 of the inner stand 2, and the left and right side rolls are The guide key 10 is inserted into the recess 9 formed in the seat 8.
Is inserted so as to press the upper surfaces of the side roll yokes 6 and 7 and adjust the interval between the side rolls. Therefore, when replacing the side rolls, after removing the upper horizontal roll together with the roll chock 3, the four guide keys 10 are pulled out and the side roll yokes 6, 7 are removed.
Each side roll is pulled up.

In an inner stand type molding machine for forming an electric resistance welded tube disclosed in Japanese Patent Publication No. Sho 64-10292, as shown in FIGS. Guide part 1 arranged in
1 are formed, and the roll chocks 3 and 4 of the upper and lower horizontal rolls are fitted and mounted in the vertical direction along these guide portions 11. The side rolls are located above the lower roll chock 4 and the guides of the inner stand 2. A side roll housing 12 slidable in the vertical direction is provided along the portion 11, and the width of each side roll yoke 14, 15 can be adjusted along a horizontal guide groove 13 formed in the side roll housing 12. Is fitted and mounted. Therefore, when replacing the side rolls, after removing the upper horizontal rolls together with the roll chocks 3, the side roll yokes 14, 15 and the side rolls together with the side roll housing 12 are drawn out along the four guides 11. And do it.

[0006]

Among such inner stand forming machines, those in which side rolls are mounted in the inner stand 2 via the side roll yokes 6 and 7 are provided with the side rolls from the inner stand 2 offline. When taking out, the four guide keys 10 have to be pulled out, and there is a problem that one guide key 10 is usually heavy and a heavy work is required. Also, since the guide key 10 can be inserted and removed by hand, the guide key 10
Between the lower surface of the roll and the upper surfaces of the side roll yokes 6 and 7, a clearance larger than the clearance required for adjusting the distance between the two side rolls is formed, and the rotation axis of the side roll is displaced from the vertical state. There is.

On the other hand, when the side roll is mounted on the inner stand 2 via the side roll housing 12, when the side roll is taken out of the inner stand 2 off-line, the above-mentioned heavy guide key is pulled out. Is not necessary, and it is only necessary to pull out the entire side roll housing 12 along the guide portion 11 of the inner stand 2. However, the side roll housing 12 in which the guide groove 13 for adjusting the interval between the side rolls is formed.
Slides along the vertical guide portion 11 of the inner stand 2, the clearance required for vertical slide causes the side roll housing 12 to rattle, and the rotation axis of the side roll is shifted from the vertical state. There is a problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and does not require a heavy guide key to be manually supported. It is an object of the present invention to provide an inner stand type molding machine capable of eliminating a loose play. Further, the present invention has been made in view of the above-mentioned problems of the related art, and an inner stand type molding machine capable of eliminating a backlash in which a rotation axis of a side roll is shifted even when a side roll housing is used. It is something to offer.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention provides an inner stand in which an inner stand is mounted on an outer housing so as to be able to move up and down, and a horizontal roll and a side roll are incorporated in the inner stand. In the type molding machine, a yoke receiver on which a side roll yoke is mounted is provided on the inner stand, and a side roll yoke is removably mounted on the yoke receiver from above.
Corresponding to the upper surface of the side roll yoke placed on the work seat
Key mounting window penetrating inside and outside the inner stand part
The inner side of this key mounting window is formed
The key mounting window has one
Swing key whose end is rotatably supported on a vertical rotation axis
The upper surface of the swing key and the inner stand
Upper and lower two tapered surfaces that kill backlash between the fixing recesses
Are provided slidably with two taper keys configured with
Fix one taper key to the key mounting window, and
The other taper key has the same taper surface as the other key.
It is characterized by being fixed so as to match .

Further, in order to solve the above-mentioned problems of the prior art, the present invention relates to an inner stand type molding machine in which an inner stand is mounted on an outer housing so as to be able to move up and down, and a horizontal roll and side rolls are incorporated in the inner stand. A side roll housing having a horizontal movement guide for guiding the horizontal movement of the side roll yoke is mounted on the inner stand so as to be able to move up and down via an elevating guide, and the side roll yoke is mounted on the horizontal movement guide of the side roll housing. A fixing mechanism that kills a gap between the lifting guide of the side roll housing and the inner stand is interposed while being mounted so as to be horizontally movable, and this fixing mechanism is configured.
Fix the end of the fixing bolt to the side roll housing
And can slide up and down
To the left and right, and fix the base end of this fixing bolt to the front.
Note that the nut protrudes out of the inner stand
Screw in the side roll housing and inner stand
Is fixed . In addition,
In order to solve the problems of the prior art, the present invention
The inner stand is attached to the jig so that it can move up and down.
The horizontal stand and the side roll are integrated into the stand.
In the stand type molding machine, the side roll yoke
A horizontal movement guide that guides horizontal movement
Lift guide to the inner stand
This side roll housing is mounted so that it can be moved up and down
Side roll yoke can be moved horizontally on the horizontal movement guide
While mounting the side roll housing
A fixing mechanism that kills the gap between the guide and the inner stand
The fixing mechanism is interposed, and the inner stand is raised.
Between the lowering guide and the guide of the side roll housing
Left and right tapers with two tapered surfaces in the gap
And one taper key is connected to the side roll
Support for lateral movement on the jing, operated by the other taper key
Connect the bolt and turn it against the fixed nut to move it up and down.
Reciprocating in the direction of
Lower the other taper key and move the other
And tighten the inner stand to remove the gap.
It is characterized by fixing it to the idling roll housing.
It is.

[0011]

According to the inner stand type molding machine of the present invention,
Attachable inner stand to outer housing
And the horizontal roll and side roll on this inner stand
In an inner stand type molding machine incorporating
Yoke support on which the side roll yoke is placed on the stand
A seat is provided, and the side roll yoke is
It was placed detachably from the direction, and was placed on the yoke seat.
Inner stand corresponding to the upper surface of the side roll yoke
A key mounting window that penetrates inside and outside in minutes is formed,
The inside of this key mounting window is used as the fixing recess of the inner stand.
On the other hand, one end of the key mounting window is
A swing key supported movably is provided and this swing
Between the upper surface of the key and the fixing recess of the inner stand
2 composed of two upper and lower tapered surfaces that kill the rattle
One taper key is provided slidably, and one taper key is
The key is fixed to the key mounting window.
The taper keys are fixed so that the taper surfaces of the two taper keys are aligned with each other. Thus, since the swing key is supported by the inner stand, there is no need to support it by hand, and the play of the swing key is eliminated by inserting a taper key, thereby improving the positioning accuracy of the side roll.

According to the inner stand type molding machine of the present invention, in the inner stand type molding machine in which the inner stand is mounted on the outer housing so as to be able to move up and down and the horizontal roll and the side roll are incorporated in the inner stand,
A side roll housing having a horizontal movement guide for guiding the horizontal movement of the side roll yoke is mounted on the inner stand so as to be able to move up and down via an elevating guide, and the side roll yoke is horizontally mounted on the horizontal movement guide of the side roll housing. While being movably mounted, a fixing mechanism that kills a gap between the lifting guide of the side roll housing and the inner stand is interposed to constitute this fixing mechanism.
Insert the tip of the fixing bolt into the groove of the side roll housing.
And can slide vertically.
It is locked in the left and right direction, and the base end of this fixing bolt is
With the nut protruding out of the
To secure the side roll housing and inner stand.
Has to be constant, leaving only necessary clearance roll clearance adjusting the side roll yokes, so that improve the positioning accuracy of the side roll eliminating the backlash by other clearances. In addition, the invention
According to the molding machine, it is possible to move up and down the outer housing.
Attach the inner stand and attach the horizontal stand to the inner stand.
Inner stand type molding machine incorporating
Guide the horizontal movement of the side roll yoke
Side roll housing with guide for horizontal movement
Is attached to the inner stand via a lifting guide so that it can be raised and lowered
And the guide for horizontal movement of this side roll housing
While installing the side roll yoke so that it can move horizontally,
Lift guide and inner stan for side roll housing
And a fixing mechanism that kills the gap between the
The lifting guide and the side of the inner stand.
Two tapes to be inserted into the gap between the roll housing and the guide
The left and right taper keys are in contact with each other.
Key can be moved laterally to the side roll housing
Support and connect the operation bolt to the other taper key and fix it
It can be reciprocated vertically by turning the nut
Operate the operation bolt and lower one taper key.
And move the other taper key sideways to eliminate the gap.
Fasten the inner stand and side roll housing
The center of load of the side roll width adjusting device and the center of the side roll can be aligned.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 4 show an embodiment in which an inner stand unit of an inner stand type molding machine according to the first invention is extracted and shown. FIG. 1 is a front view, FIG. 2 is a plan view, and FIG. FIG. 4 is an enlarged view of a portion A, and FIG. 4 is a sectional view taken along line BB in FIG.

The inner stand unit 20 employs a form in which the side roll yoke 21 is directly supported by the inner stand 22, and a yoke receiving seat 23 on which the side roll yoke 21 is placed is formed inside the inner stand 22. I have. Then, the side roll yoke 21 is placed on the yoke seat 23.

A key mounting window 25 penetrating inside and outside is formed at four places of the inner stand 22 corresponding to the upper surface of the side roll yoke 21 placed on the yoke receiving seat 23. The inside is a fixing recess 26 of the inner stand 22.

The key mounting window 25 is provided with a swing key 28 whose one end is rotatably supported by a vertical rotation shaft 27. The swing key 28 is rotated to fix the fixing recess 26 of the inner stand 22. , The upper surface of the side roll yoke 21 can be pressed and fixed to the inner stand 22. In order to rotate the swing key 28 and insert it between the side roll yoke 21 and the fixed concave portion 26 of the inner stand 22 in this manner, a clearance is required, and the side roll yoke 21 is inclined by the clearance. The rotation axis of the roll 29 may deviate from the vertical state.

Therefore, in order to eliminate the play of the side roll yoke 21, a taper key 30 is formed by combining two upper and lower tapered surfaces which kill the play between the upper surface of the swing key 28 and the fixing recess 26 of the inner stand 22. , 31 are provided, the upper taper key 30 is fixed to the upper surface of the key mounting window 25, and the lower taper key 31 is slidably provided so that the taper surfaces of the lower surface of the upper taper key 30 match each other. This lower taper key 31 has an operation bolt 3 at one end.
2 is screwed, and an intermediate nut 33 is fixed to the key mounting window 25. The operating bolt 32 is operated from the outside of the key mounting window 25 to slide the lower taper key 31 to taper the upper taper key 30. With the surface, the play between the upper surface of the swing key 28 and the fixing recess 26 of the inner stand 22 can be eliminated.

The mounting structure of the upper and lower horizontal rolls in such an inner stand, the structure of the roll driving device, and the structure of the pressing device are the same as those in the related art. The structures of the interval adjusting device, the roll driving device, and the like are not different from those of the related art, and thus the description thereof is omitted.

In such an inner stand type molding machine,
When removing the inner stand unit 20 from the outer housing (not shown) and then removing the side roll 29, remove the upper horizontal roll together with the roll chock 34 and move the lower taper key 31 by rotating the operation bolt 32. A gap is formed between the side roll yoke 21 and the fixed concave portion 26 of the inner stand 22, and the swing key 28 is rotated so as to rotate outward. Then, the upper portion of the side roll yoke 21, whose movement in the vertical direction has been suppressed by the swing key 28, becomes free, and the side roll 29 together with the side roll yoke 21 can be pulled out above the inner stand 22.

On the other hand, when the side roll 29 is incorporated, the procedure is reversed, and the side roll yoke 21 is lowered from above the inner stand 22 to the yoke seat 23 of the inner stand 22, and the swing key 28 is mounted. The swing key 2 is pivotally inserted between the upper surface of the side roll yoke 21 and the fixing recess 26 of the inner stand 22.
8 between the upper taper key 30 and the upper taper key 30
Is pushed out with the operation bolt 32, and the side roll yoke 21 is fixed without any gap.

Since the swing key 28 and the upper and lower taper keys 30 and 31 are used, the swing key 28 is supported on the inner stand 22 by the rotating shaft 27 when the side roll 29 is attached or detached. It is not necessary for the operator to support the weight, the work can be easily performed, and the side roll yoke 21 can be fixed to the inner stand 22 with a certain gap.
It is possible to perform high-precision molding without any difficulty such as tilting of the rotating shaft of No. 9.

Next, an embodiment of the inner stand type molding machine according to the second invention will be described in detail with reference to FIGS. 5 to 7 show an embodiment in which the inner stand unit of the inner stand type molding machine according to the second invention is extracted and shown. FIG. 5 is a plan sectional view of the left half, and FIG.
FIG. 7 is a sectional view taken along line D-D in FIG. 5.

The inner stand unit 40 employs a form in which a side roll yoke 42 of a side roll 41 is supported on an inner stand 44 via a side roll housing 43. Four elevating guides 45 are formed, and the guide portions 46 of the side roll housing 43 are fitted so that they can slide in the vertical direction. The side roll housing 43 includes a side roll 41.
A horizontal movement guide 47 for guiding the horizontal movement of the side roll yoke 42 is formed, and the side roll yoke 42 is mounted so as to be movable in the horizontal direction so that the width between the left and right rolls can be adjusted. .

When the side roll yoke 42 of the side roll 41 is supported on the inner stand 44 via the side roll housing 43, the side roll 4
After the upper and lower positions of No. 1 have been set to the predetermined positions,
It is only necessary to adjust the width between the rolls and apply the rolling force,
There is no need to move the side roll housing 43 in the vertical direction. Further, the side roll housing 43 rattles due to a gap between the guide portion 46 of the side roll housing 43 and the elevating guide 45 of the inner stand 44. As a result, the rotation axis of the side roll 41 is tilted, and the molding accuracy deteriorates. .

The fixing mechanism 4 for fixing the side roll housing 43 to the inner stand 44 at a predetermined position where the side roll yoke 42 of the side roll 41 and the vertical center of the width adjusting device 48 of the inner stand 44 coincide with each other.
9 are provided and are fixed by fixing bolts 50.

The fixing bolt 50 has a T-shaped tip and a flat cross section of the side roll housing 43 is fitted in a T-shaped groove 51 so that it can be slid in the up-down direction and in the left-right direction. Are locked. The base end of the fixing bolt 50 is projected outside the inner stand 44, and a nut 52 is screwed in. Each of the side roll housings 43 is fixed to the inner stand 44 using four fixing bolts 50. I do.

By fixing the side roll housing 43 to the inner stand 44 with the eight fixing bolts 50 and nuts 52 in this way, it is possible to eliminate the play associated with the elevation of the side roll housing 43.

In the inner stand unit 40, the inner stand 44 is supported via an elevating mechanism (not shown) so that the vertical position of the inner stand 44 can be adjusted with respect to the outer housing (not shown). No. 64-1 which has already been described in the configuration using the C.43.
0292, but the inner stand 4
4 is not fixed, but is supported on the outer housing via an elevating mechanism.
The configuration is common to that of the device disclosed in Japanese Patent Publication No. 46-46.

Further, the position of the lower horizontal roll can be adjusted by a lifting device for the roll chock, and the position of the side roll 41 and the lower horizontal roll is adjusted independently.

The mounting structure of the upper and lower horizontal rolls on the inner stand 44, the structure of the driving device of the upper and lower horizontal rolls, and the structure of the pressing device and the like in the inner stand unit 40 are not different from the conventional ones. ,
In addition, side roll reduction device and roll interval adjustment device,
Further, the structure of the roll driving device and the like is not different from the conventional one, so that the description thereof is omitted.

In such an inner stand type molding machine,
To remove the side roll 41 after removing the inner stand unit 40 from the outer housing (not shown), remove the upper horizontal roll together with the roll chock, and then loosen the nut 52 of the fixing mechanism 49 to fix the fixing bolt 50.
The tightened state between the T-shaped portion at the end of the groove and the groove portion 51 of the side roll housing 43 is released, so that the side roll housing 43 can move vertically along the fixing bolt 50 via the groove portion 51. The lifting guide 4 of the inner stand 44 together with the side roll housing 43
After the guide portion 46 is pulled out along the guide roll 5, the side roll yoke 42 of the side roll 41 is moved along the horizontal movement guide 47 of the side roll housing 43 to take out the side roll 41.

On the other hand, when the side roll 41 is incorporated, the procedure is the reverse of that for removal, and after the side roll 41 and the side roll yoke 42 are mounted in the horizontal movement guide 47 of the side roll housing 43,
The guide portion 46 of the side roll housing 43 is fitted to the elevating guide 45 of the inner stand 44, and the T-shaped portion at the tip of the fixing bolt 50 is fitted to the groove 51 of the side roll housing 43. Put it in the stand 44. When the side roll housing 43 is aligned with the width adjustment device 48 of the inner stand 44 in the vertical direction, the nut 52 is fixed to the fixing bolt 50 of the fixing mechanism 49 by the inner stand 4.
Tighten from outside of 4 to fix.

Then, the side roll housing 43 is fixed so as to be attracted to the inner stand 44, so that there is no play between the side roll housing 43 and the inner stand 44, and the side roll housing 43 is mounted on the horizontal moving guide 47 of the side roll housing 43. The side roll yoke 42 of the side roll 41 has only a clearance necessary for width adjustment, and the rotation axis of the side roll 41 does not tilt,
High-precision positioning is possible.

In this inner stand type molding machine,
Since the inner stand unit 40 can be moved up and down by an elevating mechanism (not shown) and the vertical position of the side roll 41 is adjusted together with the inner stand 44,
The side roll housing 43 can be fixed to the inner stand 44 in a state where the side roll housing 43 coincides with the vertical center position of the width adjustment device 48 of the side roll 41, and the load point of the width adjustment device 48 is shifted from the center of the side roll 41. Can be eliminated.

Next, another embodiment of the second invention will be described with reference to FIGS. FIG. 8 to FIG.
FIG. 8 is a plan view of the left half, FIG. 9 is a view taken along the line EE in FIG. 8, and FIG. 10 is a view showing the inner stand unit of the inner stand type molding machine according to the present invention. 8 is an enlarged view of a portion F, and FIG. 11 is a view taken along a line GG in FIG.

The inner stand unit 60 of this embodiment
As in the above embodiment, the side roll 41 is supported via the side roll housing 43, and only the fixing mechanism 61 of the side roll housing 43 is different.

The fixing mechanism 61 includes an inner stand 44
Left and right taper keys 62 and 63 in contact with two tapered surfaces to be inserted into the gap between the lifting guide 45 and the guide portion 46 of the side roll housing 43. It is movably supported, and the other left taper key 62 is
The right taper key 63 is moved laterally by reciprocating vertically by connecting and turning the fixed nut 65 with respect to the fixed nut 65. The fixing mechanism 61 is provided between each lifting guide 45 and the guide portion 46, and is provided at a total of four locations.

The inner stand unit 6 using the fixing mechanism 61 composed of the left and right taper keys 62 and 63.
0, when the side roll housing 43 is aligned with the width adjustment device 48 of the inner stand 44 in the vertical direction, the operation bolt 64 of the fixing mechanism 61 is turned to lower one left taper key 62 to thereby lower the other. The right taper key 63 is laterally moved and tightened and fixed so as to eliminate the gap.

Then, the guide portion 46 of the side roll housing 43 is fixed so as to be separated from the elevating guide 45 of the inner stand 44, so that there is no play between the side roll housing 43 and the inner stand 44. The side roll yoke 42 of the side roll 41 attached to the horizontal movement guide 47 has only a clearance required for width adjustment, and the rotation axis of the side roll 41 does not tilt, thereby enabling high-precision positioning.

Also, in this inner stand type molding machine,
Since the inner stand unit 60 can be moved up and down by an elevating mechanism (not shown) and the vertical position of the side roll 41 is adjusted together with the inner stand 44,
The side roll housing 43 can be fixed to the inner stand 44 in a state where the side roll housing 43 coincides with the vertical center position of the width adjustment device 48 of the side roll 41, and the load point of the width adjustment device 48 is shifted from the center of the side roll 41. Can be eliminated.

In each of the above embodiments, the inner stand type molding machine for forming an electric resistance welded tube has been described as an example, but the present invention can be similarly applied to other inner stand type molding machines for forming.

Further, changes may be made to each component without departing from the scope of the present invention.

[0043]

As described above in detail with the embodiment, according to the inner stand type molding machine of the first invention, the inner stand is mounted on the outer housing so as to be able to move up and down.
Wear the horizontal roll and side roll on this inner stand
In the inner stand type molding machine incorporating
Yoke on which side roll yoke is placed on the female stand
Set up a seat and place the side roll yoke on this yoke seat.
It is placed detachably from the direction and placed on the yoke seat.
Inner stand corresponding to the upper surface of the side roll yoke
A key mounting window penetrating inside and outside is formed in the part
The inside of this key mounting window is fixed to the inner stand
On the other hand, this key mounting window has a rotating shaft
Provide a swing key rotatably supported by this switch.
And the fixing recess of the inner stand
Combine the upper and lower two tapered surfaces to kill the backlash
Slidably provided with two taper keys
To the key mounting window, and the tapered surface of this taper key.
To the other taper key
Since the inner stand and the swing key are fixed, the play between the inner stand and the swing key can be eliminated. Thus, since the swing key is supported by the inner stand, there is no need to support the swing key by hand, and the play of the swing key can be eliminated by inserting a taper key, so that the positioning accuracy of the side roll can be improved.

According to the inner stand type molding machine of the second invention, the inner stand is mounted on the outer housing so as to be able to move up and down, and the inner stand is equipped with a horizontal roll and side rolls. , A side roll housing having a horizontal movement guide for guiding the horizontal movement of the side roll yoke is mounted on the inner stand so as to be able to move up and down via an elevating guide, and the side roll yoke is mounted on the horizontal movement guide of the side roll yoke. Is mounted so as to be able to move horizontally, and a fixing mechanism that kills a gap between the lifting guide of the side roll housing and the inner stand is interposed, and this fixing mechanism is configured.
Fix the end of the fixing bolt to the side roll housing
And can slide up and down
To the left and right, and fix the base end of this fixing bolt to the front.
Note that the nut protrudes out of the inner stand
Screw in the side roll housing and inner stand
Is fixed, so that only the clearance required for adjusting the roll interval of the side roll yoke is left, and there is no play due to other gaps, so that the positioning accuracy of the side roll can be improved.

Further, according to the inner stand type molding machine of the third invention , the inner stand can be moved up and down to the outer housing.
Attach the stand and attach the horizontal roll and support to this inner stand.
Inner stand type molding machine incorporating id roll
To move the side roll yoke horizontally.
Insert the side roll housing with the moving guide
To the stand via a lifting guide so that it can be raised and lowered.
Side roll housing horizontal movement guide to side
While the roll yoke is mounted so that it can move horizontally,
Between the elevating guide of the droll housing and the inner stand
A fixing mechanism that kills the gap between them is interposed, and this fixing mechanism is
The lifting guide and the side roll of the inner stand
Two tapered surfaces to enter the gap between the housing guide
The left and right taper keys are in contact with each other.
Is movably supported by the side roll housing.
Connect the operating bolt to the other taper key and
To make it possible to reciprocate up and down.
Operate the operating bolt to lower one taper key.
Move the other taper key sideways and tighten it so that there is no gap.
Attach the inner stand and side roll housing
Since the fixing is performed, the center of load of the side roll width adjusting device and the center of the side roll can be aligned.

[Brief description of the drawings]

FIG. 1 is a front view of an example of an inner stand unit of an inner stand type molding machine according to a first invention, which is extracted and shown.

FIG. 2 is a plan sectional view of one embodiment showing an inner stand unit of the inner stand type molding machine according to the first invention.

FIG. 3 is a diagram illustrating an inner stand unit of the inner stand type molding machine according to the first embodiment of the present invention; FIG.
It is a part enlarged view.

FIG. 4 is a diagram showing an inner stand unit extracted from the inner stand type molding machine according to the first embodiment of the present invention;
It is -B sectional drawing.

FIG. 5 is a plan sectional view of the left half of one embodiment showing an inner stand unit of the inner stand type molding machine according to the second invention.

FIG. 6 is a view showing an inner stand unit of the inner stand type molding machine according to the second invention, which is extracted from FIG.
FIG.

FIG. 7 is a diagram illustrating an inner stand unit of the inner stand type molding machine according to the second invention, which is extracted from FIG.
It is -D sectional drawing.

FIG. 8 is a left half plan cross-sectional view of another embodiment showing an inner stand unit of the inner stand type molding machine of the second invention.

FIG. 9 is a view taken along the line EE in FIG. 8 of another embodiment of the inner stand type molding machine of the second invention, in which an inner stand unit is extracted and shown.

FIG. 10 is a view showing another embodiment of an inner stand unit of the inner stand type molding machine according to the second invention.
It is an F section enlarged view in the inside.

FIG. 11 is a view showing another embodiment of the inner stand type molding machine according to another embodiment of the present invention.
It is a GG arrow line figure in 0.

FIG. 12 is a side view of a conventional inner stand molding machine.

FIG. 13 is a plan view of a conventional inner stand molding machine.

FIG. 14 is a side view of a conventional side stand housing type inner stand molding machine.

FIG. 15 is a plan view of a conventional side stand housing type inner roll forming machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 20 Inner stand unit 21 Side roll yoke 22 Inner stand 23 Yoke receiving seat 26 Fixed recess 27 Rotation axis 28 Swing key 29 Side roll 30, 31 Taper key 32 Operation bolt 33 Nut 40 Inner stand unit 41 Side roll 42 Side roll yoke 43 Side roll Housing 44 Inner stand 45 Elevating guide 46 Guide part 47 Guide for horizontal movement 48 Width adjusting device 49 Fixing mechanism 50 Fixing bolt 51 Groove 52 Nut 60 Inner stand unit 61 Fixing mechanism 62, 63 Taper key 64 Operating bolt 65 Fixing nut

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masayuki Nakamura 1st Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Ishikawajima-Harima Heavy Industries Co., Ltd. No. 1 Haramachi Ishikawajima-Harima Heavy Industries Co., Ltd., Yokohama No. 2 Factory (56) References JP-A-61-253116 (JP, A) Real-life Sho-63-62217 (JP, U) (58) Fields investigated (Int. . ^7, DB name) B21D 5/08 - 5/12 B21B 31/08 B21C 37/08

Claims (3)

(57) [Claims] 1. An inner stand type molding machine in which an inner stand is mounted on an outer housing so as to be able to move up and down, and a horizontal roll and a side roll are incorporated in the inner stand. A side roll yoke is mounted on the inner stand. A yoke seat is provided, and a side roll yoke is detachably mounted on the yoke seat from above, and the yoke seat is provided.
Corresponding to the upper surface of the side roll yoke placed on
A key mounting window penetrating inside and outside is formed in the
And the inside of this key mounting window
One end of this key mounting window is vertical
Provide a swing key that is rotatably supported by a rotating shaft,
The upper surface of this swing key and the inner stand
Align the upper and lower two tapered surfaces to kill backlash with the fixed recess
The two taper keys are slidably provided, and one
Key to the key mounting window, and
Match the other taper key to the taper surface
An inner stand type molding machine characterized by being fixed as described above . 2. An inner stand type molding machine in which an inner stand is mounted on an outer housing so as to be able to move up and down, and a horizontal roll and a side roll are incorporated in the inner stand. The side roll housing having the guide formed thereon is mounted on the inner stand so as to be able to move up and down via an elevating guide, and the side roll yoke is mounted on the horizontal movement guide of the side roll housing so as to be horizontally movable. interposed a locking mechanism to kill the gap between the lift guide and the inner stand, the rhino the tip of the fixing bolt constituting the fixing mechanism
It fits into the groove of the droll housing and slides vertically.
As well as locking in the left and right direction.
The base end of the bolt protrudes out of the inner stand
Screw the nut as the state and install the side roll housing
An inner stand type molding machine characterized by fixing the inner stand and the inner stand. 3. An inner housing capable of ascending and descending to the outer housing.
Attach the stand and attach the horizontal roll and support to this inner stand.
Inner stand type molding machine incorporating id roll
To move the side roll yoke horizontally.
Insert the side roll housing with the moving guide
Ascending and descending to the stand via the elevating guide And attach it to
Side roll housing horizontal movement guide to side
While the roll yoke is mounted so that it can move horizontally,
Between the elevating guide of the droll housing and the inner stand
With a fixing mechanism that kills the gap between them, The fixing mechanism is connected to the elevating guide of the inner stand.
And the guide portion of the side roll housing
Consists of left and right taper keys with two tapered surfaces in contact
And attach one taper key to the side roll housing.
Supports lateral movement, and an operation bolt is attached to the other taper key.
Reciprocate up and down by connecting and turning against fixed nut
It is possible to move and operate the operation bolt to make one taper
Lower the key and move the other taper key sideways to
The inner stand and side row.
Inner stabilizer fixed to the housing
Molding machine.