JP2011025301A - Manufacturing method of cylindrical work and roll bender - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of cylindrical work which can easily perform change and adjustment of pressurizing force and also can easily take out the work after processing, and a roll bender used therefor. <P>SOLUTION: The method utilizes an upper roll RU that is arranged rotatably around a rotational axis of the upper roll, a lower roll RL that is attached with a rotation driving means and can rotate around a rotational axis of the lower roll parallel to the rotational axis of the upper roll, and a work holder DW that is in a shape of plate and made of elastic material. The upper roll RU and the lower roll RL are arranged above and below keeping a designated distance D between them. Thickness and material of the work holder DW are selected so that the pressurizing force generated during passage of the work holder pinched between the upper roll and the lower roll becomes the desired force. The manufacturing method of cylindrical work includes a step to bend the work W into a cylindrical form by pinching and passing the work holder DW loaded with the work W of metal plate under pressurization between the upper roll RU and the lower roll RL. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method of manufacturing a cylindrical workpiece in which a workpiece made of a metal plate is sandwiched between an upper roll and a lower roll while being pressed, and the workpiece is bent into a cylindrical shape, and an apparatus for manufacturing the cylindrical workpiece It is about a roll vendor.

2. Description of the Related Art Conventionally, various roll benders are known in which a workpiece of a metal plate is passed through while pressing with a substantially cylindrical upper roll and a lower roll to bend the workpiece into a cylindrical shape.
For example, in the prior art described in Patent Document 1, a workpiece is sandwiched between two lower rolls arranged side by side and one upper roll (one upper roll between two lower rolls). Each roll is arranged so that the outer peripheral portion of the upper roll protrudes), the rotation of the upper roll is controlled by the first electric motor capable of shifting control, and the lower roll is rotated by the second electric motor capable of shifting control. A roll bender is described that prevents the workpiece from being damaged by controlling and appropriately controlling the rotation of the first electric motor and the rotation of the second electric motor to prevent slippage.
As another prior art, as shown in FIG. 6, a metal plate workpiece W between a metal upper roll ZU and a lower roll ZL having an outer peripheral portion formed of an elastic body ZD such as urethane. A roll bender is known in which a workpiece W is passed through while being pressed and bent into a cylindrical shape.

JP 2007-29962 A

Since the prior art described in Patent Document 1 and the prior art shown in FIG. 6 allow only a metal plate workpiece to pass between the upper roll and the lower roll, both are used to adjust the pressure. A mechanical mechanism for adjusting the pressing force is required for the upper roll or the lower roll, which complicates the structure and takes time when changing or adjusting the pressing force.
In addition, since both of them pass only the metal plate workpiece between the upper roll and the lower roll, the bent cylindrical workpiece is processed while being sandwiched between the upper roll and the lower roll. . Therefore, in order to remove the workpiece after processing, the upper roll and the lower roll must be separated. For this reason, it takes time to remove the workpiece after processing.
The present invention was devised in view of such points, and it is easier to change or adjust the applied pressure, and a method for manufacturing a cylindrical workpiece that can easily take out a workpiece after processing, and The issue is to provide role vendors.

As means for solving the above-mentioned problems, the first invention of the present invention is a method of manufacturing a cylindrical workpiece as described in claim 1.
The method of manufacturing a cylindrical workpiece according to claim 1 includes an upper roll rotatably provided around an upper roll rotation axis and a lower roll rotation axis parallel to the upper roll rotation axis. Using a rotatable lower roll and a work base having a plate-like shape and formed of an elastic body, the upper roll and the lower roll are arranged vertically so as to have a predetermined interval, The thickness and material are selected such that the applied pressure received when passing between the upper roll and the lower roll is a desired applied pressure, and the work table on which a metal plate work is placed, It is a manufacturing method of a cylindrical work which has a step which carries out pressure processing, putting between an upper roll and the lower roll, and bending the work in the shape of a cylinder.

A second invention of the present invention is a method for manufacturing a cylindrical workpiece as described in claim 2.
The manufacturing method of the cylindrical workpiece according to claim 2 is the manufacturing method of the cylindrical workpiece according to claim 1, and is further provided in the vicinity of the upper roll so as to reciprocate in the upper roll rotation axis direction. The workpiece is bent into a cylindrical shape using a possible take-out means and an auxiliary moving means capable of moving the work table, and then separated from the upper roll and the lower roll using the auxiliary moving means. Moving the work table in a direction, using the take-out means, moving the processed work hanging around the upper roll along the upper roll and removing it from the upper roll; It is a manufacturing method of the cylindrical workpiece | work which has these.

The third invention of the present invention is a roll bender as described in claim 3.
According to a third aspect of the present invention, there is provided a roll bender comprising: an upper roll rotatably provided about an upper roll rotation axis; and a lower roll rotatable about a lower roll rotation axis parallel to the upper roll rotation axis. A roll, a work table having a plate shape and formed of an elastic body, and a control means for controlling the rotation of the lower roll, wherein the upper roll and the lower roll are vertically moved so as to have a predetermined interval. The thickness and material of the work table are selected so that the pressure applied when passing between the upper roll and the lower roll is the desired pressure.
Then, the control means rotates the lower roll using the driving means, and passes the work table on which the work of the metal plate is placed while pressing between the upper roll and the lower roll. Then, the workpiece is bent into a cylindrical shape.

A fourth invention of the present invention is a roll bender as described in claim 4.
The roll bender according to claim 4 is the roll bender according to claim 3, further having a cylindrical shape and an inner diameter larger than an outer diameter of the upper roll. A plurality of curvature conversion adapters having different outer diameters are prepared, and each of the plurality of curvature conversion adapters is set to have the same thickness from the inner wall to the outer wall in the cylindrical shape, and the upper roll and The pressure applied when the work table is passed between the lower roll and the lower roll is set to be the same.

The fifth invention of the present invention is a roll bender as described in claim 5.
The roll bender according to claim 5 is the roll bender according to claim 3, further having a cylindrical shape and an inner diameter larger than an outer diameter of the upper roll. A plurality of curvature conversion adapters having different outer diameters attached to each other, and when the curvature conversion adapter is used, after the work table has passed between the upper roll and the lower roll, The upper roll and the lower roll are positioned above the upper roll and inside the curvature conversion adapter so that the outer peripheral surface of the curvature conversion adapter hanging around the roll does not come into contact with the lower roll. The curvature conversion adapter is locked when the work table is not present between them, and the gap between the outer peripheral surface of the curvature conversion adapter and the lower roll is maintained. The locking member is provided which can be.

A sixth aspect of the present invention is a roll bender as described in the sixth aspect.
The roll bender according to claim 6 is the roll bender according to any one of claims 3 to 5, further provided in the vicinity of the upper roll and capable of reciprocating in the upper roll rotation axis direction. And an auxiliary moving means capable of moving the work table.
The control means passes the work table between the upper roll and the lower roll to bend the work into a cylindrical shape, and then uses the auxiliary moving means to move the upper roll and the lower roll. The work table is moved in a direction away from the upper roll, and the processed work hanging so as to surround the upper roll is moved along the upper roll and removed from the upper roll using the take-out means.

The seventh invention of the present invention is a roll bender as described in claim 7.
The roll bender according to claim 7 is the roll bender according to any one of claims 3 to 6, wherein the roll bender is in a standby position that is a position for waiting the work table before bending the work. A plate-shaped workpiece temporary placement means that can reciprocate in the direction of the upper roll rotation axis above the workpiece table; and a workpiece supply means for supplying a workpiece to be processed next on the workpiece temporary placement means; And workpiece positioning means provided with a workpiece positioning surface for adjusting the edge of the workpiece supplied on the workpiece temporary mounting means in a direction orthogonal to the upper roll rotation axis direction.
The control means moves the workpiece temporary placing means toward the standby position, and supplies the workpiece to be processed next on the workpiece temporary placing means using the workpiece supply means, Is in the standby position, the workpiece temporary placing means is brought into contact with the workpiece positioning surface while the edge of the workpiece placed on the workpiece temporary placing means is brought into contact with the workpiece positioning surface. The workpiece is moved in the crossing direction and dropped onto the workpiece table.

According to the manufacturing method of the cylindrical workpiece according to claim 1 or the roll bender according to claim 3, not only the metal plate workpiece is allowed to pass between the upper roll and the lower roll, but also the plate-like elasticity. Since the metal plate work is placed and passed through the work base formed of a body, the thickness and material of the work base may be appropriately selected in order to achieve the desired applied pressure.
Thereby, a change or adjustment of a pressurizing force can be performed more easily.

  Moreover, according to the manufacturing method of the cylindrical workpiece of Claim 2, or the roll bender of Claim 6, since the upper roll and the lower roll are arrange | positioned so that the predetermined space | interval may leave | separate, the workpiece after a process is carried out. When taking out the workpiece, it is not necessary to separate the upper roll and the lower roll, and it is possible to easily take out the processed workpiece without trouble.

According to the roll bender described in claim 4, it is easy to bend the workpiece of the metal plate with various curvatures by using the cylindrical curvature conversion adapter having various outer diameters.
Furthermore, in the curvature conversion adapters having various outer diameters, the thickness from the inner wall to the outer wall is made the same, so that the pressure applied by the upper roll and the lower roll can be made the same regardless of which curvature conversion adapter is used. .

  According to the roll bender described in claim 5, when the curvature conversion adapter is used, the outer peripheral portion of the curvature conversion adapter RH does not come into contact with the lower roll RL as shown in the right diagram of FIG. Thus, since the curvature conversion adapter RH can be locked by the locking member RK, for example, removal of the workpiece W after processing becomes easier.

  Further, according to the roll bender described in claim 7, the work can be automatically set at the correct position in the roll bender in which the change or adjustment of the applied pressure is easier, which is very convenient.

1 is a schematic external view illustrating an embodiment of a roll bender 1 of the present invention. 1 is a schematic perspective view of a roll bender 1. It is a figure explaining operation | movement of the roll vendor. It is a figure explaining the state using the curvature conversion adapter RH which changes the curvature bent into a cylinder shape. It is a figure explaining the operation | movement which mounts the workpiece | work W automatically on the workpiece base DW. It is a figure explaining the mode of processing by the upper roll ZU and the lower roll ZL (The outer peripheral part is formed with elastic bodies ZD, such as urethane) in the conventional roll bender.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing. 1 (A) to (C) and FIG. 2 show schematic external views of an embodiment of a roll bender 1 of the present invention, and are a plan view (FIG. 1 (A)) and a front view (FIG. 1), respectively. 1 (B)), a side view (FIG. 1 (C)), and a perspective view (FIG. 2 (with a curvature conversion adapter RH)). The X axis, the Y axis, and the Z axis are orthogonal to each other, the Z axis indicates a vertically upward direction, and the X axis and the Y axis indicate a horizontal direction.

● [Overall configuration of roll vendor 1 (Fig. 1, Fig. 2)]
Next, the whole structure of the roll bender 1 of this invention is demonstrated using FIG. 1 (A)-(C) and FIG. In addition, the support | pillar etc. which support each member, the drive means etc. which drive each member are abbreviate | omitting illustration.
The roll bender 1 includes a substantially cylindrical upper roll RU and a lower roll RL which are arranged vertically so as to have a predetermined interval. In the present embodiment, an example in which there is one upper roll RU and one lower roll RL will be described, but the number of upper rolls RU and lower rolls RL may be any number.
The upper roll RU is rotatable about the upper roll rotation axis RUY (no drive means is provided).
The lower roll RL includes rotation drive means (not shown) such as an electric motor, and can rotate about a lower roll rotation axis RLY parallel to the upper roll rotation axis RUY. The upper roll rotation axis RUY and the lower roll rotation axis RLY are parallel to the Y-axis direction.
The upper roll RU is attached to the upper roll support member 21 via a bearing 22. And the upper roll support member 21 can move up and down along the guide rail 20A provided in the upper roll guide member 20, and can fix a position at a movement destination. Thereby, the space | interval D (refer FIG. 3 (A)) of the upper roll RU and the lower roll RL can be set to the desired space | interval.
Further, for example, the upper roll RU is made of metal, and the lower roll RL has an elastic body such as rubber attached to the outer peripheral portion of the metal roll to prevent slipping.

The front table TF and the rear table TR are disposed substantially horizontally at a position slightly lower than the upper end of the lower roll RL.
The workpiece W made of a metal plate is placed on a workpiece base DW having a plate shape and formed of an elastic body such as rubber, and is pressed between the upper roll RU and the lower roll RL from the rear table TR. Pass while. Then, the work table DW reaches the front table TF, and the work W is bent into a cylindrical shape so as to hang around the upper roll RU (see FIGS. 3C to 3F).
The front table TF passes the work table DW that has passed between the upper roll RU and the lower roll RL and reached the front table TF in the X-axis direction (the work table DW passes between the upper roll RU and the lower roll RL). Auxiliary moving means 40 is provided which can be reciprocated in the moving direction).

  Further, in the vicinity of the upper roll RU, a take-out rail 30 serving as a track of the take-out means 31 for taking out the workpiece W after processing is arranged in parallel to the upper roll rotation axis RUY. It is possible to reciprocate along the take-out rail 30.

The rear table TR is provided with a stocker 11 that accommodates a workpiece (W) to be processed next. An opening hole through which the workpiece (W) can pass is provided on the side of the stocker 11 that faces the workpiece table DW. 11K (see FIG. 5B) is provided. The supply slider 12 (corresponding to the workpiece supply means) can reciprocate in the direction of the upper roll rotation axis RUY (Y-axis direction), and passes the workpiece (W) to be processed next through the opening hole 11K. It is possible to supply on the work table DW.
On the side facing the stocker 11 across the rear table TR, a positioning member 13 whose position is fixed by a pressing arm 13A and a set slider 14 that can reciprocate in the direction of the upper roll rotation axis RUY (Y-axis direction). (Corresponding to the work temporary placing means) is provided.
Further, at the end of the rear table TR, a moving means 10 (with a piston) that can push the work table DW at the standby position (see FIG. 3C) toward the upper roll RU and the lower roll RL. Cylinder).
Although not shown, the roll bender 1 includes a control unit that takes in a signal from each detection unit and controls each movable body.

● [Machining operation (Fig. 3)]
Next, the machining operation will be described with reference to FIGS.
In the “start” state shown in FIG. 3A, the work table DW is placed on the front table TF, and the work table DW is located away from the upper roll RU and the lower roll RL. Further, the upper roll RU and the lower roll RL are in a stopped state. Further, for example, the detection means SF and SR are detection means for detecting whether or not the work table DW is present at a position in the Y-axis direction with respect to itself. The control means can determine whether or not the work table DW exists at the position of the detection means SF, SR based on the detection signals from the detection means SF, SR.
In the “standby position feed” state shown in FIG. 3B, the control means controls the auxiliary movement means 40 while the detection signal from the detection means SF indicates the “work table DW is present” state. The work table DW is moved in the X-axis direction and pushed between the upper roll RU and the lower roll RL, and the lower roll RL is rotated (in the clockwise direction in FIG. 3B) to move the work table DW to the rear table. Move in the direction of TR. At this time, the upper roll RU rotates by the movement of the work table DW sandwiched between the upper roll RU. The auxiliary moving means 40 shown in the present embodiment describes a structure that moves in the X-axis direction with the work table DW sandwiched in the Y-axis direction, but may be a conveyor or the like. Any device capable of reciprocating in the X-axis direction may be used. Further, when the detection signal from the detection means SF changes from the “work table DW is present” state to the “work table DW is not present” state, the control means stops the operation of the auxiliary movement means 40 and the upper roll RU and the lower roll The work table DW is moved by RL.

In the “standby position stop, work set” state shown in FIG. 3C, the work base DW pushes the piston of the moving means 10 and the detection signal from the detection means SR changes from the “no work base DW” state to the “work base”. The state changes to the “DW exists” state. Based on the detection signal from the detection means SR, the control means stops the rotation of the lower roll RL and holds the work table DW at the standby position. At this time, the work table DW is in the “standby position” shown in FIG. 3C (the position where the work table DW is separated from the upper roll RU and the lower roll RL), but the work table DW in the “standby position” is the upper position. The length of the work table DW in the X-axis direction and the position of the detection means SR in the X-axis direction may be adjusted so as to be sandwiched between the roll RU and the lower roll RL.
Then, the control means places the workpiece W to be processed next on the workpiece table DW in the “standby position”. The procedure for automatically placing the workpiece W on the workpiece table DW will be described later.

In the “processing” state shown in FIG. 3D, the control means places the work W on the work table DW, and then pushes out the piston of the moving means 10 so that the work table DW is placed between the upper roll and the lower roll RL. And the lower roll RL is rotated (rotated counterclockwise in FIG. 3D). Then, the work table DW on which the work W is placed is passed while being pressed by the upper roll RU and the lower roll RL. Then, the workpiece W fed while being pressurized is bent toward the upper roll RU, and the workpiece table DW is fed toward the front table TF.
In the “machining end” state shown in FIG. 3E, the movement of the work table DW to the front table TF side is stopped because the work table DW has reached a position where it is not sandwiched between the upper roll RU and the lower roll RL. is there. This state is a state in which the bending process of the workpiece W is completed, and the workpiece W is surrounded by the upper roll RU, but the workpiece W is sandwiched between the workpiece base DW and the upper roll RU. At this time, the detection signal from the detection means SF changes from the “no work table DW” state to the “the work table DW exists” state. The control means stops the rotation of the lower roll RL based on the detection signal from the detection means SF. Note that the control unit may stop the rotation of the lower roll RL by detecting that the load of the lower roll RL is lost.

In the “start position feed, workpiece removal” state shown in FIG. 3 (F), the control means changes the detection signal from the detection means SF from the “no work table DW” state to the “work table DW exists” state. Accordingly, the work table DW is further moved by a predetermined distance in the direction (X-axis direction) away from the upper roll RU and the lower roll RL using the auxiliary moving means 40, and the processed work W and the work table DW Separate. Since the upper roll RU and the lower roll RL are originally spaced apart by a distance D, it is not necessary to separate the upper roll RU and the lower roll RL.
Then, the control means moves the take-out means 31 along the take-out rail 30, pushes out the work W hanging around the upper roll RU, removes the work W from the upper roll RU, and then moves the take-out means 31 to the original position. Return to position. Thus, the processed workpiece W can be easily removed with less effort.
Then, the state returns to the “start” state shown in FIG.

  In the above description, the position of the work table DW is detected by the detection means SF and SR, and the work table DW at the “standby position” is pushed in the direction of the upper roll RU and the lower roll RL by the moving means 10. When the code “10” is changed from the moving means to the damper and limit switch that reciprocates in the X-axis direction, and the work table DW is in the “standby position”, the state is sandwiched between the upper roll RU and the lower roll RL. The detection means SF and SR can be omitted if the “processing completed” state is detected from the load of the lower roll RL or the like.

● [Adjusting pressure force (Fig. 3 (A))]
As shown in FIG. 3 (A), the upper roll RU and the lower roll RL are arranged vertically so as to have a predetermined distance D. To change or adjust the pressure applied by the upper roll RU and the lower roll RL, What is necessary is just to select the material and thickness of the work base DW appropriately.
Thereby, it is not necessary to provide a mechanism for adjusting the pressing force on the upper roll RU or the lower roll RL, and it is only necessary to prepare in advance a work table DW in which a material and a thickness that provide the desired pressing force are selected. It is very easy to change or adjust the applied pressure, and the structure can be prevented from becoming complicated.

● [Adjustment method of bending curvature (diameter) (FIGS. 4A and 4C)]
In order to bend the workpiece W into various diameters (curvatures), the diameter (curvature) of the upper roll RU may be changed. However, since it takes time to replace the upper roll RU, it is preferable to use a cylindrical curvature conversion adapter RH having an inner diameter larger than the outer diameter of the upper roll RU.
FIG. 4 (A) shows an example of a state using a curvature conversion adapter RH having a relatively large outer diameter, and FIG. 4 (C) shows an example of a state using a curvature conversion adapter RH having a relatively small outer diameter. Show. The locking member RK in FIG. 4A will be described later.
If the thickness Th from the inner wall to the outer wall of each curvature conversion adapter RH is the same, the radius R1u of the upper roll RU, which is the distance R1 from the center of the upper roll RU to the workpiece W at the time of bending, is added. “Thickness Th of curvature conversion adapter RH” can be made constant, so that the pressure applied by upper roll RU (including curvature conversion adapter RH) and lower roll RL is constant regardless of which curvature conversion adapter RH is used. Can be.

● [Method for removing workpiece W after processing (FIG. 3 (F), FIG. 4 (B)])
As shown in FIG. 3 (F), the control means passes the work table DW between the upper roll RU and the lower roll RL so that the work table DW does not remain between the upper roll RU and the lower roll RL. (After passing, the work table DW is moved in the X-axis direction using the auxiliary moving means 40 so that the work table DW does not remain between the upper roll RU and the lower roll RL).
The upper roll RU and the lower roll RL are originally arranged so as to have a predetermined distance D, and since the workpiece W is not sandwiched between the upper roll RU and the lower roll RL, it can be easily removed using the take-out means 31. it can.
The take-out means 31 is detachable and is attached with a shape corresponding to the diameter of the workpiece W after processing and the diameter of the upper roll RU (including the diameter of the curvature conversion adapter RH shown in FIG. 4).

When the curvature conversion adapter RH is used, as shown in the left diagram of FIG. 4B, even if the work table DW is passed between the upper roll RU and the lower roll RL so that the work table DW does not remain. In some cases, the processed workpiece W may be sandwiched between the lower roll RL and the curvature conversion adapter RH. This state occurs when “the maximum distance DR between the outer peripheral surface of the upper roll RU and the inner peripheral surface of the curvature conversion adapter RH” is larger than the “thickness Tw of the work table DW” shown in FIG. With this, there is a possibility that the workpiece W cannot be properly taken out.
Therefore, as shown in the right view of FIG. 4B, a detachable locking member RK is provided at a position above the upper roll RU and inside the curvature conversion adapter RH. The locking member RK is provided at a position where a predetermined interval can be maintained without contact between the outer peripheral surface of the curvature conversion adapter RH and the lower roll RL when there is no work table DW between the upper roll RU and the lower roll RL. The curvature conversion adapter RH is locked (hooked). Note that, regardless of whether or not the thickness Th of the various curvature conversion adapters RH is the same, the “outer peripheral surface of the upper roll RU and the inner peripheral surface of the curvature conversion adapter RH than the“ thickness Tw of the work table DW ”. The locking member RK is used when the “maximum distance DR” is large.

● [Procedure for automatically setting the workpiece (W) to be processed next on the workpiece table DW (FIG. 5)]
In the “standby position stop, work set” state shown in FIG. 3C, the control means automatically sets the work (W) to be processed next on the work table DW. The procedure of this set will be described.
In the state of any one of FIGS. 3A, 3B, 3E, and 3F, the control means sets the set slider 14 (corresponding to the temporary work placement means) as shown in FIG. "Receiving position (position immediately above the workpiece DW when it comes to the standby position)".
Then, the control means reciprocates the supply slider 12 (corresponding to the work supply means) in the Y-axis direction as shown in FIG. 5B in the “standby position stop, work set” state shown in FIG. The workpiece is moved, and only one workpiece (W) is moved (supplied) onto the set slider 14 at the “receiving position”.
Then, as shown in FIG. 5C, the control means moves the set slider 14 in the Y-axis direction away from the work table DW (in the direction intersecting the work positioning surface 13M (in FIG. 5C). In a direction perpendicular to and away from the work table DW) and moved from the “receiving position” to the “set position”). Then, the edge of the workpiece (W) on the set slider 14 comes into contact with the workpiece positioning surface 13M of the positioning member 13 (corresponding to the workpiece positioning means), and the edge of the workpiece (W) is in a direction perpendicular to the Y-axis direction. It is adjusted (corrected) and eventually falls (places) on the work table DW.

In the present embodiment described above, the workpiece base DW on which the workpiece W of the metal plate is placed is passed between the upper roll RU and the lower roll RL while being pressed, and the workpiece W is formed into a cylindrical shape. It can also be set as the manufacturing method of a cylindrical workpiece | work which has the step to bend.
Further, after bending the workpiece W into a cylindrical shape, the auxiliary moving means 40 is used to separate the work table DW from the upper roll RU and the lower roll RL, and the take-out means 31 is used to move the workpiece W to the upper roll. It can also be set as the manufacturing method of a cylindrical workpiece | work which has a step removed from RU.

The cylindrical workpiece manufacturing method and roll bender 1 of the present invention are not limited to the appearance, configuration, structure, operation, manufacturing method, and the like described in the present embodiment, and various methods can be used without departing from the scope of the present invention. It can be changed, added and deleted.
In the description of the present embodiment, the example in which the rotation driving unit is provided only on the lower roll RL has been described, but the present invention is not limited to this.
Further, the structure of the auxiliary moving means 40 and the mechanism (the supply slider 12, the positioning member 13, the set slider 14, etc.) for placing the next work W on the work table DW are not limited to these.

DESCRIPTION OF SYMBOLS 1 Roll bender 10 Moving means 11 Stocker 11K Opening hole 12 Supply slider (work supply means)
13 Positioning member (work positioning means)
13A Presser arm 13M Positioning surface 14 Set slider (workpiece temporary placing means)
20 upper roll guide member 20A guide rail 21 upper roll support member 22 bearing 30 take-out rail 31 take-out means 40 auxiliary movement means DW work table RK locking member RH curvature conversion adapter RU upper roll RUY upper roll rotation shaft RL lower roll RLY lower roll Rotation axis SF, SR detection means TF Front table TR Rear table W Workpiece

Claims (7)

An upper roll rotatably provided around the upper roll rotation axis;
A lower roll having a rotation drive means and rotatable about a lower roll rotation axis parallel to the upper roll rotation axis;
Using a work base having a plate shape and formed of an elastic body,
The upper roll and the lower roll are arranged up and down so as to have a predetermined interval,
The thickness and material of the work table are selected so that the applied pressure received when passing between the upper roll and the lower roll is the desired applied pressure,
Passing the workpiece table on which the workpiece of the metal plate is placed between the upper roll and the lower roll while applying pressure, and bending the workpiece into a cylindrical shape,
Manufacturing method of cylindrical workpiece. It is a manufacturing method of the cylindrical work according to claim 1,
Furthermore, using a take-out means provided near the upper roll and capable of reciprocating in the direction of the upper roll rotation axis, and an auxiliary movement means capable of moving the work table,
After bending the workpiece into a cylindrical shape, using the auxiliary moving means, moving the workpiece table in a direction away from the upper roll and the lower roll;
Using the take-out means to move the processed workpiece hanging around the upper roll along the upper roll and remove it from the upper roll.
Manufacturing method of cylindrical workpiece. An upper roll rotatably provided around the upper roll rotation axis;
A lower roll having a rotation drive means and rotatable about a lower roll rotation axis parallel to the upper roll rotation axis;
A work table having a plate shape and formed of an elastic body;
Control means for controlling the rotation of the lower roll,
The upper roll and the lower roll are arranged vertically so as to have a predetermined interval,
The thickness and material of the work table are selected so that the applied pressure received when passing between the upper roll and the lower roll is the desired applied pressure,
The control means includes
The lower roll is rotated using the driving means, and the work base on which a metal plate work is placed is passed between the upper roll and the lower roll while being pressed, and the work is placed in a cylinder. Bending into a shape,
Roll vendor. The roll vendor according to claim 3,
Further, a plurality of curvature conversion adapters having different outer diameters are prepared, which have a cylindrical shape and have an inner diameter larger than the outer diameter of the upper roll and are attached to the upper roll.
Each of the plurality of curvature conversion adapters is set to have the same thickness from the inner wall to the outer wall in the cylindrical shape, and the pressure applied when the work table is passed between the upper roll and the lower roll is the same. Is set to be
Roll vendor. The roll vendor according to claim 3,
Further, a plurality of curvature conversion adapters having different outer diameters are prepared, which have a cylindrical shape and have an inner diameter larger than the outer diameter of the upper roll and are attached to the upper roll.
When the curvature conversion adapter is used, an outer peripheral surface of the curvature conversion adapter hanging so as to surround the upper roll after the work table has passed between the upper roll and the lower roll is the lower roll. The curvature conversion adapter is locked when there is no work table between the upper roll and the lower roll at a position above the upper roll and inside the curvature conversion adapter so as not to come into contact with the upper roll. A detachable locking member is provided to maintain the distance between the outer peripheral surface of the curvature conversion adapter and the lower roll,
Roll vendor. The roll bender according to any one of claims 3 to 5,
Furthermore, provided with a take-out means provided in the vicinity of the upper roll and capable of reciprocating in the upper roll rotation axis direction, and an auxiliary movement means capable of moving the work table,
The control means includes
After passing the work table between the upper roll and the lower roll and bending the work into a cylindrical shape, the auxiliary moving means is used to move the work base away from the upper roll and the lower roll. Move the work base and use the take-out means to move the processed work hanging around the upper roll along the upper roll and remove it from the upper roll.
Roll vendor. The roll vendor according to any one of claims 3 to 6,
A plate-shaped workpiece temporary mounting means that can reciprocate in the direction of the upper roll rotation axis above the workpiece table at a standby position that is a position for waiting the workpiece table before bending the workpiece;
A workpiece supply means for supplying a workpiece to be processed next on the workpiece temporary placing means;
A workpiece positioning means provided with a workpiece positioning surface for adjusting the edge of the workpiece supplied on the workpiece temporary mounting means in a direction orthogonal to the upper roll rotation axis direction;
The control means includes
Moving the workpiece temporary placing means toward the standby position;
Supplying a workpiece to be processed next on the workpiece temporary placing means using the workpiece supply means;
When the workpiece base is in the standby position, the workpiece temporary placement means is moved to the workpiece while the edge of the workpiece placed on the workpiece temporary placement means is brought into contact with the workpiece positioning surface. Move the workpiece in the direction intersecting the positioning surface and drop the workpiece onto the workpiece table.
Roll vendor.

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