JP5030849B2 - Shape correction device and shape correction method - Google Patents

Description

  The present invention relates to a shape correction apparatus and a shape correction method for correcting the shape of a metal annular member deformed into a substantially elliptical cross section so that the sectional shape of the annular member approaches a perfect circle.

Conventionally, as an endless belt-shaped strip straightening device, a plurality of drums, a take-up device provided on at least one of these drums, and a drive provided on any one of the plurality of drums One having an apparatus and a roller leveler provided on a track of an endless strip suspended on a plurality of drums is known (for example, see Patent Document 1). Conventionally, as a strain relief device for a metal endless belt, a split mold having a smooth circumferential surface, a wedge provided so as to separate the split surface of the split mold outwardly from the circumference, and detachable from the split mold There is also known one having an expansion stop attached thereto (for example, see Patent Document 2). When removing the distortion of the metal endless belt using this distortion removing device, the metal endless belt rolled into the circumferential surface of the split mold is fitted and the split mold is pushed outward to expand the metal endless belt. In this state, the whole is heated for a predetermined time, and then cooled and naturally contracted, the metal endless belt is supported by a split mold and then removed.
JP-A-61-88060 JP-A 49-95858

  However, when correcting the shape of the metallic annular member using the conventional straightening device or the strain removing device, the annular member is suspended on the drum of the straightening device by the operator's hand, or the circle of the strain removing device. It is necessary to fit in the peripheral surface. For this reason, for example, when manufacturing an annular member used as a component part of an endless belt of a belt-type continuously variable transmission, a predetermined surface polishing process is performed after being cut out from a steel plate drum so that the cross section is substantially elliptical If an attempt is made to correct the shape of a large number of deformed annular members using a device similar to the above-described conventional correction device or distortion removing device, it takes a lot of time and may damage the annular member when attached to the correction device or the like. There is also.

  Therefore, the present invention aims to save the processing for correcting the shape of the metal annular member deformed to have a substantially elliptical cross section so that the sectional shape of the annular member approaches a perfect circle, The main purpose is to prevent the members from being damaged.

  The shape correcting device and the shape correcting method according to the present invention employ the following means in order to achieve the main object.

The shape correction device according to the present invention is:
A shape correction device that corrects the shape of a metal annular member that has been deformed into a substantially elliptical cross section so that the cross-sectional shape of the annular member approaches a perfect circle,
At least one first roller disposed so as to be in contact with the outer peripheral surface of the annular member conveyed in a predetermined direction by a predetermined conveying means;
First rotation driving means capable of rotating the first roller in a predetermined direction;
At least one second roller disposed so as to be in contact with the outer peripheral surface of the annular member and sandwich the annular member together with the first roller;
Second rotation driving means capable of rotating the second roller in the same direction as the first roller;
Roller moving means for moving the first roller and the second roller closer to and away from each other;
While the annular member is sandwiched and compressed by the first and second rollers rotating in the same direction, the first and second rollers rotate at least once in the opposite direction to the first and second rollers. Control means for controlling the rotation driving means and the roller moving means,
At least one of the rotation shaft of the first roller and the rotation shaft of the second roller is a conveyance surface of the conveyance means while the annular member rotates in the direction opposite to the first and second rollers. It is characterized by being tilted so as to rise.

  When correcting the shape of the metal annular member deformed to have a substantially elliptical cross section using this shape correcting device, the annular member that is conveyed by the predetermined conveying means between the first roller and the second roller is provided. The first and second rollers are made to approach each other and rotate in the same direction so as to be sandwiched, and the annular member is sandwiched and compressed by the first and second rollers, so that the first and second rollers rotate at least once in the opposite direction. As a result, the annular member deformed into a substantially elliptical cross section is sandwiched between the first and second rollers and is rotated at least once in the opposite direction to the first and second rollers. Of these, the smaller the curvature is, the larger the deformation is toward the central axis of the annular member due to the compression action of the first and second rollers. Accordingly, it is possible to reduce the internal distortion of the annular member existing at the portion where the curvature is reduced by deforming the annular member into a substantially elliptical cross section, thereby making the sectional shape of the annular member closer to a perfect circle. Further, in this shape correction device, at least one of the rotation shaft of the first roller and the rotation shaft of the second roller is conveyed while the annular member rotates in the opposite direction to the first and second rollers. It is tilted to rise from the road. That is, when the first and second rollers are brought into contact with the outer peripheral surface of the annular member so as to sandwich and compress the annular member, the annular member is rotated by the first and second rollers rotating in the same direction. The second roller and the second roller are rotated in the opposite direction and are lifted away from the conveying surface of the conveying means. Thereby, while the annular member is sandwiched and compressed by the rotating first and second rollers, the annular member can be prevented from rotating in contact with the conveyance surface. As a result, according to this shape correcting device, it is possible to easily and quickly save labor by eliminating processing such as manually attaching the annular member to a drum or a mold or manually bending the annular member. In addition, the cross-sectional shape of the metal annular member deformed into a substantially elliptical shape can be made close to a perfect circle, and damage to the annular member can be suppressed during the shape correction process.

  The first and second rollers are formed in a columnar shape, and at least one of the rotation shaft of the first roller and the rotation shaft of the second roller is formed by the annular member. The first and second rollers may be tilted by a predetermined angle with respect to the vertical direction so as to rise from the conveyance surface while rotating in the opposite direction.

  Furthermore, the shape correction device may further include a rising restricting means for restricting the rising of the annular member to the extent that the lower end surface of the annular member does not contact the transport surface. This makes it possible to prevent the lower end surface of the annular member from coming into contact with the transport surface and to restrict the annular member from rising more than necessary, and in the vertical direction of the annular member by the first and second rollers. The sandwiched state can be maintained well. Therefore, according to such a shape correcting device, it becomes possible to smoothly execute the shape correcting process of the annular member by rotating the annular member a desired number of times in a state of being sandwiched and compressed by the first and second rollers. .

  The shape correction device may further include a determination unit that determines whether or not the annular member held by the first and second rollers remains in a predetermined region. The rotation speed of the first roller and the first speed are set so that the entire annular member is included in the predetermined region when the determination unit determines that a part of the annular member is outside the predetermined region. It is also possible to change at least one of the rotational speeds of the two rollers. Thereby, since the holding state of the annular member by the first and second rollers in the carrying direction of the carrying means can be maintained well, the annular member is held and compressed by the first and second rollers. It is possible to smoothly execute the shape correction processing of the annular member by rotating it a desired number of times.

  Further, the annular member is a thin member cut out from a steel plate drum and subjected to a predetermined surface polishing treatment, and is used as a component part of an endless belt of a belt-type continuously variable transmission after completion of all processing steps. May be used.

The shape correction method according to the present invention includes:
A shape correction method for correcting the shape of a metal annular member deformed into a substantially elliptical cross section so that the cross sectional shape of the annular member approaches a perfect circle,
At least one of the rotating shafts is inclined with respect to the vertical direction, and the first roller and the second roller are brought close to each other so as to sandwich the annular member conveyed by a predetermined conveying means, and the same. At least one rotation in the opposite direction to the first and second rollers so as to rise from the conveying surface of the conveying means while the annular member is sandwiched and compressed by the first and second rollers. It is characterized by making it.

  According to this method, it is possible to easily and quickly make a substantially elliptical cross section while saving labor by eliminating the process of manually mounting the annular member on a drum or a mold or manually bending the annular member. It becomes possible to make the cross-sectional shape of the metal annular member deformed to be close to a perfect circle and to prevent the annular member from being damaged during the shape correction process.

  Next, the best mode for carrying out the present invention will be described using examples.

  1 and 2 are schematic configuration diagrams showing a shape correcting device 10 according to one embodiment of the present invention. The shape correction device 10 shown in these drawings is used for shape correction of a metal annular member 50 (see FIG. 3) used as a component of an endless belt of a belt type continuously variable transmission. Specifically, the shape correction device 10 according to the embodiment has a cross-sectional shape of the annular member 50 that is cut out from a steel plate drum and deformed into a substantially elliptical cross-section by performing a predetermined surface polishing process such as barrel polishing. Is arranged on a conveyor belt 101 of a conveyor 100 that conveys a large number of annular members 50 that have been subjected to barrel polishing. As shown in FIG. 1 and FIG. 2, the shape correction device 10 of the embodiment includes a first roller 11 and a second roller 12, and a first motor M <b> 1 (first motor) that can rotate the first roller 11. 1 rotation driving means), a second motor M2 (second rotation driving means) capable of rotating the second roller 12, and a fluid for causing the first roller 11 and the second roller 12 to approach and separate from each other. A pressure cylinder (roller moving means) 20 and a control device (control means) 30 for controlling the entire shape correction device 10 are provided.

  The first roller 11 is formed in a cylindrical shape with, for example, resin and is fixed to the rotating shaft 11a. The rotation shaft 11a of the first roller 11 is rotatably supported by a bearing fixed to the support member 13, and is also fixed to the support member 13 directly or via a transmission mechanism (not shown). Connected to. The support member 13 is disposed on the conveyor belt 101 so as to be movable back and forth in a direction orthogonal to the extending direction of the conveyor belt 101 (the conveying direction of the conveying conveyor 100, see the white arrow in FIGS. 1 and 2). In the embodiment, two rails 16r are installed in parallel on the conveyor belt 101 via the support columns 15 installed so as to face each other with the conveyor belt 101 interposed therebetween. Two sliders 16s constituting a so-called linear guide together with the corresponding rails 16r are fixed so as to be parallel to each other at a predetermined interval. The support member 13 is slidably disposed on the two rails 16r so as to suspend the first roller 11.

  Similarly, the second roller 12 is also formed in a columnar shape having the same dimensions as the first roller 11 with, for example, resin, and is fixed to the rotating shaft 12a. The rotary shaft 12a is rotatably supported by a bearing fixed to a support member 14 (see FIG. 2) having the same configuration as the support member 13, and is supported directly or via a transmission mechanism (not shown). Is connected to the rotating shaft of the second motor M2. The support member 14 is also arranged on the conveyor belt 101 so as to be movable back and forth in a direction orthogonal to the extending direction of the conveyor belt 101. In other words, two sliders 16s that constitute a so-called linear guide together with the rail 16r are also fixed to the lower portion of the support member 14 so as to be parallel to each other at a predetermined interval. The support member 14 is slidably disposed on the two rails 16r while being adjacent to the support member 13 and suspending the second roller 12 so as to face the first roller 11.

  The fluid pressure cylinder 20 is an air cylinder or a hydraulic cylinder, for example. One end of the fluid pressure cylinder 20 is fixed to the support member 13, and the other end is fixed to the support member 14. Accordingly, when the rod of the fluid pressure cylinder 20 is expanded and contracted (reciprocating), the support member 13 and the support member 14, that is, the first roller 11 and the second roller 12 are conveyed as shown in FIG. It becomes possible to approach and separate from each other in a direction orthogonal to the extending direction of the belt 101. It should be noted that the support member 13 and the support member 14 are brought closest to each other at appropriate positions around the rail 16r or the conveyor belt 101 (when in the compression position), and the support member 13 and the support member 14 are separated from each other. A plurality of stoppers (not shown) for making the distance between the two (first and second rollers 11 and 12) and the vertical plane including the center line of the conveyor belt 101 substantially equal when they are in the standby position Is arranged. Instead of the fluid pressure cylinder 20, an electric actuator or a hydraulic actuator may be used.

  Here, in the shape correction device 10 of the embodiment, when the shape of the annular member 50 is corrected, the first and second rollers 11 and 12 are rotated counterclockwise at basically the same rotational speed as viewed from above. It is rotationally driven by the first motor M1 or the second motor M2 (see FIG. 2). As shown in FIG. 1, the first roller 11 according to the embodiment includes a vertical surface (conveyor belt) in which the rotating shaft 11 a includes the shaft center and extends in the extending direction of the conveyor belt 101 (conveying direction of the conveying conveyor 100). 101 is supported by the support member 13 so as to incline by an acute angle α (for example, about 3 to 10 °) clockwise from the vertical direction. Further, as shown in FIG. 1, the second roller 12 of the embodiment has a vertical axis in a vertical plane in which the rotating shaft 12 a includes the axis and extends in the extending direction of the conveyor belt 101 (the conveying direction of the conveying conveyor 100). It is supported by the support member 14 so as to be inclined counterclockwise by an acute angle β (for example, about 3 to 10 °). Note that the acute angle α and the acute angle β are the same angle in the embodiment, but they may be slightly different from each other.

  In addition, the shape correction device 10 of the embodiment includes an inlet-side photoelectric sensor unit 17 disposed on the upstream side in the transport direction of the transport conveyor 100 with respect to the first and second rollers 11 and 12, and the first and second rollers 11 and 12. 12 and an outlet side photoelectric sensor unit 18 arranged on the downstream side in the transport direction of the transport conveyor 100. The entrance-side photoelectric sensor unit 17 and the exit-side photoelectric sensor unit 18 each have a light-emitting element and a light-receiving element facing each other with the conveyor belt 101 interposed therebetween, and the surface of the conveyor belt 101 and a position above the surface by a predetermined height. When a part of the annular member 50 passes through the range up to this point, a cutoff signal indicating that fact is given to the control device 30. In the embodiment, the entrance-side photoelectric sensor unit 17 and the exit-side photoelectric sensor unit 18 are arranged such that the first and second rollers 11 and 12 are located in the center of both in the transport direction of the transport conveyor 100. Further, the distance between the entrance-side photoelectric sensor unit 17 and the exit-side photoelectric sensor unit 18 in the transport direction of the transport conveyor 100 is determined in consideration of the length of the average major axis of the annular member 50 deformed into an elliptical cross section. Further, the shape correcting device 10 of the embodiment is arranged around an axis extending in a predetermined direction above a predetermined height from the surface of the conveyor belt 101 (lower than the outer peripheral surface state of the first and second rollers 11 and 12). It includes a plurality of guide rollers (upward restricting means) 19 that are rotatably arranged. The guide roller 19 is supported by a support member arranged so as not to interfere with the annular member 50 conveyed by the conveyor 100.

  The control device 30 includes a CPU (not shown), a ROM that stores various control programs, a RAM that temporarily stores data, an input / output port, a communication port, and the like, and a management that controls the production line of the annular member 50. It is connected to the computer via a communication line. The input / output ports of the control device 30 are connected to the first and second motors M1 and M2, the fluid pressure cylinder 20, the inlet-side photoelectric sensor unit 17, and the outlet-side photoelectric sensor unit through appropriate drive circuits. 18 etc. are connected. The control device 30 follows the control program stored in the ROM, and based on the command signal from the management computer, the shut-off signals from the entrance-side photoelectric sensor unit 17 and the exit-side photoelectric sensor unit 18, and the like. M1 and M2 and the fluid pressure cylinder 20 are controlled. In the embodiment, there is an open / close gate 40 that allows and regulates the inflow of the annular member 50 conveyed by the conveyance conveyor 100 to the shape correction device 10 upstream of the entrance-side photoelectric sensor unit 17 in the conveyance direction of the conveyance conveyor 100. The control device 30 controls the opening and closing gate 40 so that the annular members 50 are fed into the shape correcting device 10 (between the first and second rollers 11 and 12) one by one.

  Next, a procedure for making the cross-sectional shape of the annular member 50 deformed into a substantially elliptical cross section using the shape correcting device 10 described above close to a perfect circle will be described with reference to FIGS. 4 to 6.

  FIG. 4 is a flowchart illustrating an example of a shape correction routine executed by the control device 30 when the shape of the annular member 50 is corrected using the shape correction device 10 of the embodiment. At the start of the shape correction routine of FIG. 4, the CPU (not shown) of the control device 30 sets the first and second rollers 11 and 12 in the predetermined standby positions to rotate in the same direction and at the same predetermined rotation speed. The first and second motors M1 and M2 are controlled (step S100), and only one of the plurality of annular members 50 transported by the transport conveyor 100 from the downstream side is fed into the shape correcting device 10. The opening / closing gate 40 is controlled to open / close (step S110). At this time, the annular member 50 that is not allowed to flow into the shape correcting device 10 stays on the downstream side of the open / close gate 40. Next, it is determined whether or not a blocking signal has been received from the inlet-side photoelectric sensor unit 17 disposed on the upstream side of the first and second rollers 11 and 12 (steps S120 and S130). When a shut-off signal is received, a timer (not shown) is turned on (step S140), and the first and second rollers 11 and 12 approach each other so as to sandwich and compress the annular member 50 conveyed by the conveyor 100. The fluid pressure cylinder 20 is controlled (step S150). In step S150, in consideration of the transport speed of the transport conveyor 100, the first and second rollers 11 and 12 each have an outer periphery near the center when the annular member 50 is viewed from the side (side of the transport conveyor 100). The rod of the fluid pressure cylinder 20 is moved so as to come into contact with the surface 51 (see FIG. 3), and the interval between the first roller 11 and the second roller 12 is kept at a predetermined compression interval Gc (see FIG. 6). The rod movement amount and the applied pressure of the fluid pressure cylinder 20 are controlled so that the position of the rod is maintained. The compression time interval Gc is surely shorter than the average minor axis length of the annular member 50 deformed to have an elliptical cross section.

  Here, when the first and second rollers 11 and 12 rotating in the same direction and at the same rotation speed come into contact with the outer peripheral surface 51 of the annular member 50, as shown in FIG. The first and second rollers 11 and 12 rotate in the opposite direction. Further, in the shape correcting device 10 of the embodiment, as described above, the rotation shaft 11a of the first roller 11 is inclined clockwise by an acute angle α from the vertical direction, and the rotation shaft 12a of the second roller 12 is moved from the vertical direction. It is tilted counterclockwise by an acute angle β (= α). As a result, a force F having a horizontal component Fx and a vertical upward component Fz as shown in FIGS. 5A and 5B is applied to the annular member 50 from the rotating first and second rollers 11 and 12. It will be. Therefore, when the annular member 50 comes into contact with the first and second rollers 11 and 12, the first and second rollers 11 and 12 that rotate in the same direction are opposite to the first and second rollers 11 and 12. And is moved away from the surface (conveying surface) of the conveyor belt 101 and ascends until it contacts the guide roller 19. As a result, in the shape correction apparatus 10 of the embodiment, the lower end surface 52 (see FIG. 3) of the annular member 50 is prevented from rotating the annular member 50 while being in contact with the surface of the conveyor belt 101. Can do.

  Further, when the first roller 11 and the second roller 12 are brought close to each other and the distance between them is maintained at the compression interval Gc, as shown in FIG. The rollers 11 and 12 are compressed in a direction orthogonal to the extending direction of the conveyor belt 101 (the conveying direction of the conveying conveyor 100). As a result, when the annular member 50 deformed to have an approximately elliptical cross section is rotated in the opposite direction to the first and second rollers 11 and 12 while being sandwiched between the first and second rollers 11 and 12, the annular member 50. Of these parts, the part with the smaller curvature is subjected to the compression action by the first and second rollers 11 and 12 and is largely deformed toward the central axis of the annular member 50. Therefore, it is possible to reduce the internal distortion of the annular member existing at the portion where the curvature is reduced by deforming the annular member 50 into a substantially elliptical cross section, and further, the compression time interval Gc and the fluid pressure cylinder 20 described above. By appropriately determining the pressure applied by considering the characteristics of the annular member 50 and the like, the annular member 50 can be deformed to the plastic region and the curvature of the entire circumference of the annular member 50 can be made more uniform.

  Now, if the process of above-mentioned step S150 is performed, the downstream side of the entrance side photoelectric sensor unit 17 and the 1st and 2nd rollers 11 and 12 arrange | positioned in the upstream of the 1st and 2nd rollers 11 and 12 It is determined whether or not a cut-off signal has been received from any one of the outlet side photoelectric sensor units 18 arranged in (Steps S160 and S170), and either the inlet side photoelectric sensor unit 17 or the outlet side photoelectric sensor unit 18 is determined. If the cutoff signal is received from, the rotational speed of the first roller 11, that is, the first motor M1 is adjusted (step S180). In the embodiment, when it is determined that the cutoff vibration is received from the inlet side photoelectric sensor unit 17 in step S170, the rotational speed of the first motor M1 is decreased (slightly) by a predetermined speed, and in step S170, the outlet side photoelectric sensor is reduced. When it is determined that the cutoff vibration has been received from the sensor unit 18, the rotational speed of the first motor M1 is increased (slightly) by a predetermined speed. As a result, when the annular member 50 that is sandwiched and compressed by the first and second rollers 11 and 12 and rotates is moved upstream in the transport direction of the transport conveyor 100 to block the signal light from the entrance-side photoelectric sensor unit 17, Since the rotation speed of the first roller 11 decreases while the rotation speed of the two rollers 12 is kept constant, the first and second rollers 11, 11 are moved by moving the annular member 50 downstream in the conveyance direction of the conveyor 100. 12 can be surely held between the two. Further, when the annular member 50 that is sandwiched and compressed by the first and second rollers 11 and 12 and rotates is moved downstream in the transport direction of the transport conveyor 100 to block the signal light of the outlet-side photoelectric sensor unit 18, the second Since the rotation speed of the first roller 11 is increased while the rotation speed of the roller 12 is kept constant, the annular member 50 is moved to the upstream side in the transport direction of the transport conveyor 100 and is moved by the first and second rollers 11 and 12. It can be surely clamped.

  After the processing in step S180 and after a negative determination is made in step S170, it is determined whether or not the time t of a timer (not shown) is equal to or longer than a predetermined processing time tref (step S190). The processing time tref substantially indicates a time during which the annular member 50 is rotated while being sandwiched and compressed by the first and second rollers 11 and 12. In the embodiment, the processing time tref is the time of the first and second rollers 11 and 12. It is determined as the time for which the annular member 50 rotates about three times in consideration of the rotation speed and the like. If the timer time t is less than the compression time tref, the processes in steps S160 to S180 are repeated again. When the timer time t is equal to or greater than the compression time tref, the timer is reset (step S200), and the first and second rollers 11 and 12 are separated from each other and returned to their standby positions. The pressure cylinder 20 is controlled (step S210). As a result, the annular member 50 that has been held by the first and second rollers 11 and 12 until then falls on the conveyor belt 101 and is conveyed to the downstream side of the shape correction device 10 by the conveyor 100. Become. At this time, as shown in FIG. 6, the cross-sectional shape of the annular member 50 that has been deformed into a substantially elliptical cross section before the shape correction is made closer to a perfect circle. It becomes possible to suppress the occurrence of a hindrance or the like in the transportation of the annular member by causing a catch or the like when the annular member 50 is transported downstream.

  After the process of step S210, it is determined whether or not the shape correction of the annular member 50 should be terminated based on a command signal from the management computer or the like, an input signal from the worker, or the like (step S220), and the shape correction is continued. If it should be, the above-described processing after step S100 is executed again. If it is determined in step S220 that the shape correction should be terminated, the rotation of the first and second motors M1 and M2 is stopped (step S230), and this routine is terminated.

  As described above, the first roller 11 and the second roller 12 are used when the cross-sectional shape of the metal annular member 50 deformed into a substantially elliptical cross section is approximated to a perfect circle using the shape correcting device 10 of the embodiment. Are rotated in the same direction at a predetermined rotational speed (step S100), and the annular member 50 is brought close to the fluid pressure cylinder 20 so that the annular member 50 is sandwiched between the first and second rollers 11 and 12. The first and second rollers 12 are rotated at least once in the opposite direction while being compressed (steps S150 to S190). Thereby, while the annular member 50 deformed to have a substantially elliptical cross section is sandwiched between the first and second rollers 11 and 12, the first and second rollers 11 and 12 rotate at least once in the opposite direction. Of the portions of the annular member 50, the smaller the curvature, the greater the deformation toward the central axis of the annular member 50 due to the compression action of the first and second rollers 11 and 12. Accordingly, in particular, the internal shape of the annular member 50 existing at the portion where the curvature has become small due to the annular member 50 being deformed into a substantially elliptical shape can be reduced, and the sectional shape of the annular member 50 can be made closer to a perfect circle. . As a result, according to the shape correction device 10, it is possible to save labor by eliminating processing such as manually attaching the annular member 50 to a drum or a mold or bending the annular member 50 manually. And it becomes possible to make the cross-sectional shape of the metal annular member 50 quickly deformed into a substantially elliptical cross section close to a perfect circle.

  Moreover, in the shape correction apparatus 10 of an Example, the 1st and 2nd rollers 11 and 12 carry out the cyclic | annular member 50 conveyed in the direction shown by the white arrow of FIG. 1 and FIG. 2 by the conveyance conveyor 100 as a conveyance means. It arrange | positions so that it can clamp from the both sides of the conveyor belt 101. FIG. Thus, the annular gate 50 conveyed by the conveyor 100 is sequentially sandwiched and compressed by the first and second rollers 11 and 12 rotating in the same direction by opening and closing the opening / closing gate 40 at predetermined intervals. Thus, the cross-sectional shape of the large number of annular members 50 deformed into a substantially elliptical cross-section can be brought close to a perfect circle easily and quickly without manual intervention.

  Further, in the shape correction device 10 of the embodiment, the rotation member 11 of the first roller 11 and the rotation shaft 12a of the second roller 12 are rotated in the opposite direction to the first and second rollers 11 and 12 by the annular member 50. However, it is inclined to rise from the conveyor belt 101. That is, when the first and second rollers 11 and 12 are brought into contact with the outer peripheral surface 51 of the annular member 50 so as to sandwich and compress the annular member 50, the annular member 50 rotates in the same direction as each other. The rollers 11 and 12 are rotated in the opposite direction to the first and second rollers 11 and 12 and are lifted away from the surface of the conveyor belt 101. Thereby, while the annular member 50 is sandwiched and compressed by the rotating first and second rollers 11 and 12, the rotation of the lower end surface 52 of the annular member 50 in contact with the surface of the conveyor belt 101 is suppressed. can do. Therefore, according to the shape correcting device 10, it is possible to save the processing for making the cross-sectional shape of the annular member 50 close to a perfect circle, and to damage the annular member 50, particularly the end face 52, during the shape correcting process. It becomes possible to suppress. Note that it is not always necessary to incline both the rotating shaft 11a of the first roller 11 and the rotating shaft 12a of the second roller 12 so that the annular member 50 is raised from the conveyor belt 101 while the annular member 50 rotates. Only one of the shaft 11a and the rotating shaft 12a of the second roller 12 may be inclined so that the annular member 50 is raised from the conveyor belt 101 while rotating.

  Further, the shape correcting device 10 of the embodiment includes the guide roller 19 that regulates the ascent of the annular member 50 so that the lower end surface 52 of the annular member 50 does not contact the surface of the conveyor belt 101. Accordingly, it is possible to prevent the lower end surface 52 of the annular member 50 from coming into contact with the surface of the conveyor belt 101 and to restrict the annular member 50 from rising more than necessary, and the first and second rollers 11. , 12 can maintain a good clamping state of the annular member 50 in the vertical direction. Therefore, according to the shape correction device 10, the shape correction processing of the annular member 50 is smoothly performed by rotating the annular member 50 a desired number of times while being held and compressed by the first and second rollers 11 and 12. Is possible.

  Furthermore, in the shape correction apparatus 10 of the embodiment, during the execution of the shape correction of the annular member 50, the annular member 50 sandwiched between the first roller 11 and the second roller 12 is in a predetermined region, that is, by the entrance side photoelectric sensor unit 17. It is determined whether or not the detection range remains within the region between the detection range and the detection range by the outlet photoelectric sensor unit 18 (steps S160 and S170). When it is determined that a part of the annular member 50 is outside the predetermined area, the rotation speed of the first roller 11 is adjusted so that the entire annular member 50 is included in the predetermined area (step S180). ). Thus, the state in which the annular member 50 is sandwiched by the first and second rollers 11 and 12 can be satisfactorily maintained, so that the annular member 50 is held and compressed by the first and second rollers 12 a desired number of times. It is possible to smoothly execute the shape correction processing of the annular member 50 by rotating only by the rotation amount. In step S180, instead of adjusting the rotation speed of the first roller 11, that is, the first motor M1, the rotation speed of the second roller 12, that is, the second motor M2, may be adjusted. , 12 (first and second motors M1, M2) may be adjusted.

  The shape correcting device 10 of the embodiment is a thin-walled member cut out from a steel plate drum and subjected to a predetermined surface polishing treatment, and after the completion of all processing steps, the endless belt of the belt type continuously variable transmission Although the annular member 50 used as a component has been described as correcting the shape, it goes without saying that the shape correcting device 10 can be applied to an annular body other than the annular member 50 of the embodiment.

  FIG. 7 is a schematic configuration diagram of a shape correcting device 10B according to a modification of the present invention. The shape correction device 10B shown in the figure includes one first roller 11 and two second rollers 121 and 122 arranged in parallel in the conveying direction of the annular member 50 at a predetermined interval. . As shown in FIG. 7, the first roller 11 is disposed so as to face the gap between the two second rollers 121 and 122. As in the case of the shape correction device 10, the first roller 11 has a vertical surface (conveyor) in which the rotating shaft 11 a includes the axis thereof and extends in the extending direction of the conveyor belt 101 (conveying direction of the conveying conveyor 100). The belt is supported by the support member 13 so as to incline by a predetermined angle (for example, about 3 to 10 °) clockwise from the vertical direction in a plane perpendicular to the surface of the belt 101. Further, the second rollers 121 and 122 are counterclockwise from the vertical direction in the vertical plane in which the respective rotating shafts 12a include the axis thereof and extend in the extending direction of the conveyor belt 101 (the conveying direction of the conveying conveyor 100). It is supported by a support member (not shown) similar to the support member 13 so as to be inclined by a predetermined angle (for example, about 3 to 10 °). Further, the rotation shafts 12a of the two second rollers 121 and 122 are connected to the rotation shaft of the second motor M2 fixed to the support member via a transmission mechanism (not shown). In the shape correcting device 10B configured as described above, the annular member 50 is made more stable as compared with the shape correcting device 10 in which each of the first and second rollers 11 and 12 is disposed to face each other. Since the first roller 11 and the second rollers 121 and 122 can be brought closer to each other in the direction orthogonal to the extending direction of the conveyor belt 101, the first roller 11 and the second rollers 121 and 122 are annularly formed. It becomes possible to make the compression state of the member 50 more appropriate.

  The embodiments of the present invention have been described above using the embodiments. However, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention. Needless to say.

  INDUSTRIAL APPLICABILITY The present invention can be used in the manufacturing industry of a metal annular member such as a component part of an endless belt of a belt type continuously variable transmission.

It is a schematic block diagram of the shape correction apparatus 10 which concerns on one Example of this invention. It is a schematic block diagram which shows the state which looked at the shape correction apparatus 10 of FIG. 1 from upper direction. It is a perspective view which shows an example of the annular member 50 which the shape correction apparatus 10 of FIG. 1 and FIG. 2 can handle. It is a flowchart which shows an example of the shape correction routine performed by the control apparatus 30 when shape-correcting the annular member 50 using the shape correction apparatus 10 of an Example. (A) And (b) is explanatory drawing explaining the shape correction of the annular member 50 by the shape correction apparatus 10. FIG. It is explanatory drawing explaining the shape correction of the annular member 50 by the shape correction apparatus 10. FIG. It is a schematic block diagram of the shape correction apparatus 10B which concerns on a modification.

Explanation of symbols

  10, 10B shape correction device, 11 first roller, 11a rotating shaft, 12, 121, 122 second roller, 12a rotating shaft, 13, 14 support member, 15 strut, 16r rail, 16s slider, 17 inlet side photoelectric sensor unit , 18 Outlet side photoelectric sensor unit, 19 guide roller, 20 fluid pressure cylinder, 30 control device, 40 opening / closing gate, 50 annular member, 51 outer peripheral surface, 52 end surface, 100 conveyor, 101 conveyor belt, M1 first motor, M2 Second motor.

Claims (6)

A shape correction device that corrects the shape of a metal annular member that has been deformed into a substantially elliptical cross section so that the cross-sectional shape of the annular member approaches a perfect circle,
At least one first roller disposed so as to be in contact with the outer peripheral surface of the annular member conveyed in a predetermined direction by a predetermined conveying means;
First rotation driving means capable of rotating the first roller in a predetermined direction;
At least one second roller disposed so as to be in contact with the outer peripheral surface of the annular member and sandwich the annular member together with the first roller;
Second rotation driving means capable of rotating the second roller in the same direction as the first roller;
Roller moving means for moving the first roller and the second roller closer to and away from each other;
While the annular member is sandwiched and compressed by the first and second rollers rotating in the same direction, the first and second rollers rotate at least once in the opposite direction to the first and second rollers. Control means for controlling the rotation driving means and the roller moving means,
At least one of the rotation shaft of the first roller and the rotation shaft of the second roller is a conveyance surface of the conveyance means while the annular member rotates in the direction opposite to the first and second rollers. An orthodontic device that is tilted so as to rise. The shape correction apparatus according to claim 1,
The first and second rollers are formed in a cylindrical shape, and at least one of the rotation shaft of the first roller and the rotation shaft of the second roller is formed by the annular member. And a shape correction device that is inclined by a predetermined angle with respect to the vertical direction so as to rise from the conveying surface while rotating in the opposite direction to the second roller. The shape correction apparatus according to claim 1 or 2,
A shape correction device further comprising a rising restricting means for restricting the rising of the annular member to such an extent that the lower end surface of the annular member does not come into contact with the transport surface. In the shape correction apparatus as described in any one of Claim 1 to 3,
A determination means for determining whether or not the annular member held by the first and second rollers remains in a predetermined region;
The control means rotates the first roller so that the entire annular member is included in the predetermined area when the determination means determines that a part of the annular member is outside the predetermined area. A shape correction device that changes at least one of a speed and a rotation speed of the second roller. In the shape correction apparatus as described in any one of Claim 1 to 4,
The annular member is a thin-walled member cut out from a steel plate drum and subjected to a predetermined surface polishing treatment, and is used as a component of an endless belt of a belt-type continuously variable transmission after the completion of all processing steps. Straightening device. A shape correction method for correcting the shape of a metal annular member deformed into a substantially elliptical cross section so that the cross sectional shape of the annular member approaches a perfect circle,
At least one of the rotating shafts is inclined with respect to the vertical direction, and the first roller and the second roller are brought close to each other so as to sandwich the annular member conveyed by a predetermined conveying means, and the same. At least one rotation in the opposite direction to the first and second rollers so as to rise from the conveying surface of the conveying means while the annular member is sandwiched and compressed by the first and second rollers. A shape correction method characterized in that

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