JP2014240086A - Leveler feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a leveler feeder for attaining energy-saving, by reducing consumption of air of an air cylinder mechanism for loading a rolling draft quantity on a plate material.SOLUTION: The leveler feeder comprises: a lower work roll arranged in a row in a fixing member; an upper work roll arranged in a row in a rocking member; the air cylinder mechanism for loading correction force on the plate material or releasing the plate material, by rocking the rocking member by air pressure of an air cylinder; a rolling draft quantity adjusting mechanism for adjusting the rolling draft quantity to be a bending quantity of the plate material; and a feed roll mechanism for holding and conveying the plate material. In the leveler feeder, in the rolling draft quantity adjusting mechanism for executing work roll opening-closing operation by using the air cylinder, an air pressure adjusting mechanism is provided to the air cylinder mechanism, for increasing-decreasing the air pressure of the air cylinder to air pressure corresponding to the required correction force linked with an increase-decrease in the adjusted rolling draft quantity of the plate material.

Description

  The present invention eliminates wasted air used for an air cylinder for opening and closing a work roll when a pilot pin positions a pair of work rolls that sandwich a roll plate material and correct bending by press progressive feeding. It provides a leveler feeder that cuts air costs and reduces costs.

  Patent Document 1 describes a leveler feeder that corrects the bending of a plate material by passing a roll-shaped plate material between a plurality of upper and lower work rolls arranged in a staggered manner by a plate material feed mechanism (feed roll mechanism). . In the leveler feeder 100 of Patent Document 1, a plurality of upper work rolls 103 provided on a swing frame (upper work roll frame) 109 and a lower work roll 102 provided on a fixed lower work roll frame 110 are provided. Arranged in a staggered pattern on the top and bottom. The plurality of upper work rolls 103 move up and down with respect to the lower work roll 102 together with the swing frame 109 by the first eccentric shaft mechanism 111 and the second eccentric shaft mechanism 108. The plurality of upper work rolls 103 are swung around the eccentric shaft 108 of the swing frame 109 and the second eccentric shaft mechanism 108 by the eccentric shaft 106c of the third eccentric shaft mechanism 106 that rotates eccentrically by an air cylinder or the like. It moves, and a board | plate material is clamped between the lower work rolls 102, or is released. The plate material sandwiched between the upper and lower work rolls (103, 102) passes between the upper and lower work rolls (103, 102) in a wavy manner by being pulled by the plate material feed mechanism (feed roll mechanism) 202, and the bending is corrected. The

  The straightening of the roll-shaped plate material involves the reduction of the plate material (the amount of bending of the plate material by bringing the upper work roll closer to the lower work roll) and the correction force of the plate material (the force pressing the upper work roll against the plate material on the lower work roll) ) Is adjusted. For example, when the yield stress and the plate width of the plate material are the same, the bending correction of the plate material requires a larger correction force as the plate material becomes thicker, but the bending can be corrected even if the amount of reduction required for correction is reduced. Further, in the bending correction of the plate material, as the plate material becomes thinner, the amount of reduction must be increased, but the bending can be corrected even if the correction force is reduced. Further, the swinging amount of the swinging frame 109 (the release amount of the plate material) required when releasing the sandwiched plate material increases as the reduction amount of the plate material increases.

  In the leveler feeder of Patent Document 1, the release amount of the plate material decreases as the correction force applied to the plate material from the upper work roll 103 increases due to the eccentric rotation position of the eccentric shaft 106c of the third eccentric shaft mechanism 106. Focusing on the fact that the release amount of the plate material increases as the correction force decreases, the correction force and the release amount to the plate material are adjusted according to the plate thickness by adjusting the eccentric rotation position of the eccentric shaft 106c. .

JP 2008-55481A

  The servo motor 113 that operates the third eccentric shaft mechanism 106 of Patent Document 1 is entirely combined with the geared motors (114, 112) that operate the first and second eccentric shaft mechanisms (111, 108) that adjust the amount of reduction. Since it can be linked automatically, there is an advantage that it is possible to simultaneously adjust the reduction amount of the plate material and the correction force applied to the plate material, but there is a problem in that a high procurement cost is required for servo control devices etc. for automatic control is there. For this reason, in the leveler feeder as in Patent Document 1, it is conceivable that the third eccentric shaft mechanism 106 is operated by an air cylinder mechanism instead of the servo motor 113.

  However, when the work roll opening / closing mechanism using the air cylinder is employed in the leveler feeder of Patent Document 1, the first or second eccentric shaft mechanism (111, 108) is moved to adjust the reduction amount of the plate material. Since the adjustment work of the correction force to the plate material performed by changing the eccentric rotation position of the eccentric shaft 106c of the third eccentric shaft mechanism 106 must be performed separately, each adjustment work takes time and labor.

  On the other hand, if it is matched with the thickest plate material that corrects the air pressure of the air cylinder that applies torque to the eccentric shaft 106c, that is, the plate material that needs to apply the strongest correction force, Patent Document 1 In this leveler feeder, it is possible to correct a thick plate material to a thin plate material from a thick plate material to a thin plate material without adjusting the eccentric rotation position of the eccentric shaft 106c of the third eccentric shaft mechanism. However, loading a thin plate material with an unnecessarily large correction force has the advantage of omitting the adjustment operation of the correction force, but has a problem in that air in the air cylinder is wasted.

  In view of the above problems, the present invention reduces the air consumption of the air cylinder by reducing the amount of air consumption of the air cylinder by linking the adjustment operation of the correction force of the plate material with the reduction amount adjustment operation of the plate material. The present invention provides a leveler feeder capable of simultaneously adjusting the amount and the correction force applied to the plate material, that is, the air pressure.

  The leveler feeder according to claim 1 includes a plurality of lower work rolls attached in a row to the fixed member, and a plurality of upper work rolls attached in a row to the swing member so as to be staggered with respect to the lower work roll. An air cylinder that oscillates the rocking member with respect to the fixed member by the air pressure of the air cylinder and applies a correction force to the plate material or releases the plate material by sandwiching the plate material between the plurality of upper and lower work rolls. Bending was corrected, and the reduction amount adjustment mechanism that adjusts the amount of reduction that becomes the bending amount of the plate material by changing the vertical distance between the mechanism and the plurality of upper work rolls and the plurality of lower work rolls when sandwiching the plate material A leveler feeder having a feed roll mechanism that sandwiches a plate material and conveys it with a preset feed length, and is adjusted by the reduction amount adjustment mechanism In conjunction with the reduction amount of increase or decrease of wood, provided with a pneumatic pressure adjusting mechanism to increase or decrease the air pressure corresponding to the corrective force required air pressure of the air cylinder to the air cylinder mechanism.

  When the plate width and yield point stress of the plate material that corrects the bending are constant, the correction force required to correct the bending of the plate material and the reduction amount that is the necessary bending amount of the plate material are determined by the plate thickness of the plate material. Further, the air pressure of the air cylinder that generates the correction force to the plate material on the plurality of upper work rolls is determined by the amount of reduction of the plate material based on the plate thickness of the plate material.

  (Operation) When the reduction amount of the plate material is adjusted by the reduction amount adjustment mechanism, the air pressure adjustment mechanism automatically adjusts the air cylinder air so that the air pressure necessary for correcting the bending of the plate material corresponds to the reduction amount. Increase or decrease the pressure. The air cylinder generates air pressure necessary for generating correction force.

  Claim 2 is the leveler feeder according to claim 1, wherein the air pressure adjusting mechanism is based on the maximum plate width that can be corrected based on the specifications of the material, and the greater the plate material, the greater the correction force. Air that calculates the air pressure corresponding to the correction force by calculating the correction force required for the plate material from the plate thickness of the input plate material so that the plate material is corrected with a larger reduction amount as the plate material is loaded and thinner. A pressure calculating unit; and an electropneumatic regulator that generates air pressure in conjunction with the air pressure calculating unit.

  (Operation) When the amount of reduction of the plate material is adjusted by the reduction amount adjustment mechanism, the air pressure calculation means automatically calculates the air pressure necessary for the correction force of the plate material from the input plate thickness, and the electropneumatic regulator The air pressure necessary for correcting the plate material is automatically generated based on the calculation result.

  Claim 3 is the leveler feeder according to claim 2, wherein the air pressure calculation means further includes the plate thickness of the plate material, and further the correction force required for the plate material from the plate width and yield point stress of the input plate material. It was decided to calculate the air pressure that generates the.

  (Function) When the reduction amount of the plate material is adjusted by the reduction amount adjustment mechanism, the air pressure calculation means automatically calculates the air pressure necessary for the correction force of the plate material from the plate thickness, the plate width and the yield point stress of the plate material. The electropneumatic regulator automatically generates the air pressure necessary for correcting the plate material based on the calculation result.

  A fourth aspect of the present invention is the leveler feeder according to the second or third aspect, further comprising a plate thickness measuring means for measuring the thickness of the plate material and inputting the measured thickness to the air pressure calculating means.

  (Operation) The plate thickness measuring means detects the plate thickness of the plate material necessary for calculating the air pressure.

  A fifth aspect of the present invention is the leveler feeder according to the fourth aspect, wherein the feed roll mechanism moves the plate material between the lower feed roll that holds the plate material and the lower feed roll by moving forward and backward with respect to the lower feed roll. An upper feed roll to be sandwiched, and the plate thickness measuring means includes a displacement sensor for detecting a displacement amount of the upper feed roll until the plate member is sandwiched between the lower feed roll.

  (Operation) The plate thickness measuring means measures the plate thickness of the plate material by detecting the displacement amount of the upper feed roll until the plate material is sandwiched between the lower feed roll and the displacement sensor.

A sixth aspect of the present invention is the leveler feeder according to the first aspect, wherein the reduction amount adjusting mechanism is based on a rotating shaft that swings around a central axis, a swinging direction and a swinging range of the rotating shaft. A swing mechanism that adjusts the amount of reduction to the plate material based on the plate thickness by moving the plurality of upper work rolls of the swing member toward the plurality of lower work rolls of the fixed member, The air pressure adjustment mechanism applies a greater correction force as the plate material becomes thicker, and adjusts the air pressure of the air cylinder by a regulator pressure adjustment shaft that moves forward and backward so that the plate material is corrected with a larger reduction amount as the plate material becomes thinner. A pressure regulator for increasing / decreasing and a regulator pressure adjusting mechanism for moving the regulator pressure adjusting shaft forward / backward at a position interlocked with the swing range of the rotating shaft are provided.
(Operation) When the reduction amount of the plate material is adjusted by the reduction amount adjustment mechanism, the regulator pressure adjustment shaft of the air pressure adjustment mechanism moves back and forth, so that the air pressure necessary for correcting the bending of the plate material corresponding to the reduction amount The air pressure of the air cylinder is automatically increased or decreased so that The air cylinder generates air pressure necessary for generating correction force.

  A seventh aspect of the present invention is the leveler feeder according to the first or sixth aspect, further comprising a plate thickness measuring unit, wherein the reduction amount adjusting mechanism is based on a measured value of the plate thickness measured by the plate thickness measuring unit. In addition, an automatic reduction amount adjusting means for automatically adjusting the reduction amount of the plate material is provided.

  (Operation) The plate material reduction amount adjustment and the air cylinder air pressure adjustment linked to the reduction amount adjustment are automatically performed based on the measurement result of the plate thickness.

  According to the leveler feeder of claim 1, since the air pressure is not generated more than necessary in the air cylinder, the cost of air is reduced. Further, the adjustment work of the correction force to the plate material, that is, the adjustment work of the air pressure is performed simultaneously with the adjustment work of the reduction amount.

  According to the leveler feeder of claim 2, even when the plate material for correcting the bending is changed to a plate material having a different plate thickness, if the plate thickness of the plate material is input and the reduction amount is adjusted, the correction is necessary. Since the air pressure is calculated and the calculated air pressure is automatically generated in the air cylinder, the air consumption is reduced and energy saving effect is obtained. At the same time, the correction force to the material and the reduction amount are adjusted simultaneously. I can do it.

  According to the leveler feeder of claim 3, the plate thickness, the plate width, and the yield of the plate material are changed even when the plate material for correcting the bending is changed not only to the plate thickness but also to a plate material having different plate width and yield point stress. If the point stress is input and the amount of reduction is adjusted, the air pressure required for correction is calculated, and the calculated air pressure is automatically generated in the air cylinder, reducing air consumption and saving energy. Can be obtained, and the correction force on the material and the amount of reduction can be adjusted simultaneously.

  According to the leveler feeder of claims 4 and 5, even if the plate thickness of the plate for correcting the bending is unknown, the plate thickness is detected, and the air pressure necessary for correction is automatically generated in the air cylinder. The amount of air consumed is reduced, and an energy saving effect can be obtained. At the same time, the correction force on the material and the amount of reduction can be adjusted simultaneously.

  According to the leveler feeder of claim 6, since the air pressure is not generated more than necessary in the air cylinder, the air consumption is reduced and the energy saving effect is obtained, and the correction force to the material and the reduction amount are simultaneously adjusted. I can do it.

  According to the leveler feeder of claim 7, the labor for adjusting the amount of reduction for each plate thickness is reduced, the amount of air consumption is further reduced, and a further energy saving effect is obtained.

It is a front view which shows the Example of a leveler feeder. It is a graph which shows the relationship of the air cylinder pressure required for correction | amendment of the bent board | plate material. It is II expanded sectional drawing of FIG. 1 which shows the air pressure adjustment mechanism of a leveler feeder. It is II expanded sectional drawing of FIG. 1 which shows the 1st modification of an air pressure adjustment mechanism. (A) It is the II expanded sectional view of FIG. 1 which shows the 2nd modification of an air pressure adjustment mechanism. (B) It is a front view of the 2nd modification of an air pressure adjustment mechanism. It is a flowchart which shows the correction | amendment operation | work of the board | plate material by the leveler feeder of an Example. It is a part of flowchart of FIG. It is a part of flowchart of FIG. (A) It is the II expanded sectional view of FIG. 1 which shows the 3rd modification of an air pressure adjustment mechanism. (B) It is a front view of the 3rd modification of an air pressure adjustment mechanism. (A) It is the II expanded sectional view of FIG. 1 which shows the 4th modification of an air pressure adjustment mechanism. (B) It is a front view of the 4th modification of an air pressure adjustment mechanism.

  An embodiment of the leveler feeder will be described with reference to FIGS. In the description of FIGS. 1 to 10, the installation direction of the feed roll is the front (F direction), the installation direction of the upper and lower work rolls relative to the feed roll is the rear (Lo direction), and the installation direction of the upper and lower work rolls is upward (each It will be described as Up direction) and downward (Lo direction).

  The leveler feeder 1 of the embodiment shown in FIG. 1 includes a fixed frame 2 (a fixed member of claim 1), a swing frame 3 (a swing member of claim 1), a plurality of upper work rolls 4, and a plurality of lower work rolls. 5. It has a reduction amount adjusting mechanism 6, an air cylinder mechanism 7, and a feed roll mechanism 8.

  A plurality of lower work rolls 5 are attached to the fixed frame 2 at equal intervals in the front-rear direction. A plurality of upper work rolls 4, which is one more than the lower work roll 5, are attached to the swing frame 3 at equal intervals in the front-rear direction. The plurality of upper work rolls 4 are arranged to face the plurality of lower work rolls 5 so as to be staggered with respect to the plurality of lower work rolls 5. An outlet side eccentric shaft mechanism 9 and an inlet side eccentric shaft mechanism 10 are supported by the fixed frame 2 so as to be swingable. A release eccentric shaft mechanism 12 is supported on the swing frame 3 so as to be swingable.

  The swing frame 3 is supported by the fixed frame 2 by the outlet side eccentric shaft mechanism 9. The first link connects the inlet side eccentric shaft mechanism 10 and the release side eccentric shaft mechanism 12. The swing frame 3 is supported by the fixed frame 2 via the release eccentric shaft mechanism 12, the first link 11, and the inlet side eccentric shaft mechanism 10. The release eccentric shaft mechanism 12 is connected to the cylinder rod 14 a of the air cylinder 14 fixed to the swing frame 3 via the second link 13. The feed roll mechanism 8 includes a lower feed roll 15 attached to the fixed frame 2 and an upper feed roll 16 that swings up and down by a swing mechanism using an air cylinder (not shown).

  The air cylinder mechanism 7 that moves the plurality of upper work rolls 4 forward and backward toward the plurality of lower work rolls 5 includes a first link 11, a release eccentric shaft mechanism 12, a second link 13, and an air cylinder 14. The second link 13 is rotatably attached to the tip of the cylinder rod 14a. The rotation shaft 12a of the release eccentric shaft mechanism 12 is slidably held in a circular hole (not shown) of the swing frame 3, and the eccentric shaft 12b integrated with the rotation shaft 12a is a circular hole 11a of the first link 11. And is fixed to the circular hole 13a of the second link.

  When the cylinder rod 14a extends rearward (R side), the second link 13 swings around the center O1 of the connecting portion 18, and the rotation shaft 12a of the release eccentric shaft mechanism 12 is centered on the shaft center O2 of the eccentric shaft 12b. As shown in FIG. At that time, the second link 13 and the swing frame 3 swing in the clockwise direction D3 about the rotation center O5 of the eccentric shaft 9b of the outlet side eccentric shaft mechanism 9, and the plurality of upper work rolls 4 are moved to the plate member 17. Press. When the cylinder rod 14a is contracted forward (F side), the swing frame 3 and the plurality of upper work rolls 4 swing in the counterclockwise direction D4 about the rotation center O5 of the eccentric shaft 9b of the outlet side eccentric shaft mechanism 9. The plate material sandwiched between the upper and lower work rolls 4 and 5 is released.

  The reduction amount adjusting mechanism 6 includes an outlet side eccentric shaft mechanism 9 and an inlet side eccentric shaft mechanism 10. The rotary shaft 9a of the outlet side eccentric shaft mechanism 9 and the rotary shaft 10a of the inlet side eccentric shaft mechanism 10 are both rotatably attached to the fixed frame 2, and are rotated by a drive source such as a servo motor (not shown). Eccentric shafts 9b and 10b are integrally provided on the rotary shafts 9a and 10a. The rotary shafts 9a and 10a are formed by a circular hole (not shown) of the fixed frame 2 and a circular hole 2a (FIGS. 3, 4, 5, 7, and 8). Are attached so as to be slidable and rotatable. The eccentric shafts 9b and 10b are attached so as to be slidably rotatable by the circular hole 3a of the swing frame 3 and the circular hole 11b of the first link 11, respectively. When the rotation shafts 9a and 10a are rotated in the clockwise D3 direction and counterclockwise D2 direction around the rotation centers O3 and O4 by the drive source, respectively, the swing frame 3 and the plurality of upper work rolls 4 are fixed frames. 2 and the reduction amount, which is the bending amount of the plate material, increases. Further, when the rotary shafts 9a and 10a are rotated in the reverse directions in the directions D4 and D1, respectively, the swing frame 3 and the plurality of upper work rolls 4 are lifted to reduce the amount of reduction of the plate material. The amount of reduction of the plate material is represented by a depth (see reference symbol d0) that causes the upper work roll to bite downward (Lo) from the upper surface (Up) of the plate material.

  In adjusting the amount of reduction of the plate material, when the plate thickness of the plate material for correcting the bending changes, the amount of reduction of the plate material is usually adjusted by both the outlet side eccentric shaft mechanism 9 and the inlet side eccentric shaft mechanism 10.

  The plate material sandwiched between the plurality of upper work rolls 4 and the lower work roll 5 is further sandwiched between the lower feed roll 15 and the upper feed roll 16 of the front feed roll mechanism 8 and sent forward. The plate material 17 is corrected in bending by moving in a wavy shape between the plurality of upper and lower work rolls 4 and 5 by the feed roll mechanism 8. The feed roll mechanism 8 has a plate thickness detecting means (detecting the plate thickness by detecting the amount of displacement of the upper feed roll 16 from the initial position until the plate material is sandwiched by a displacement sensor or the like (not shown)). It is desirable to provide a reference numeral 58 in FIG.

  Next, with reference to FIG. 2, the plate thickness of the plate for correcting the bending and the air pressure of the cylinder necessary for the correction will be described. The correction force required to correct the plate material is determined by the plate thickness, plate width, and yield point stress of the target plate material, and the air pressure of the air cylinder needs to increase as the correction force to be generated increases. When the yield point stress and the plate width of the plate are the same, the bending that occurs in the roll-shaped plate needs to generate a larger air pressure in the air cylinder as the plate becomes thicker, but reduces the amount of reduction required for correction. Even bends can be corrected. Further, in the bending correction of the plate material, the amount of reduction must be increased as the plate material becomes thinner, but the bending can be corrected even if the air pressure of the air cylinder is decreased. However, as described in the graph of “conventional cylinder set pressure” in FIG. 2, conventionally, the air pressure of the air cylinder is set to the maximum pressure B1 that can correct the thickest plate material.

  As shown in the graph of “Set pressure of air cylinder in air pressure adjusting mechanism 37, 60, 65” in FIG. 2, the plate thickness is corrected when correcting a plate material having a relationship of a <b <c <d. Is less than c, even if it is less than air pressure B1. In order to correct a thin plate material, it is necessary to increase the reduction amount of the plate material by increasing the cylinder stroke. Since the work amount of the air cylinder is air pressure x cylinder stroke, even if a small air pressure can be corrected, if the air pressure is set to the maximum pressure, the work is wasted, that is, the air consumption There is a lot of waste. When correcting a plate material with a plate thickness exceeding b and less than c, if the air pressure is reduced based on the decrease in the plate thickness, the amount of air consumed for the air cylinder corresponds to the region "ECO1" Reduced in the area where

  The reason why the set pressure is set to a constant A1 for the plate material having a thickness of a to b is that it is assumed that the air pressure cannot be set lower than the pressure necessary for the operation of the air cylinder. On the other hand, the set pressure is set to a constant B1 for the plate material having a thickness of c and d but the maximum pressure that can be generated by the leveler feeder device is required, and the maximum air pressure that can be generated by the air cylinder Because it is necessary. Accordingly, it is necessary to select, that is, limit, the plate width of the plate material having a plate thickness of c or more and d or less to a material width that can be corrected even with the air pressure B1.

  On the other hand, strictly speaking, the air pressure required to correct the plate material is represented by the graph of “theoretical set pressure of the air cylinder required for correction” in FIG. The air pressure that seems to slightly exceed the “theoretical set pressure of the air cylinder”, that is, a safety factor was set, and it was mechanically varied along this graph. Therefore, if it is assumed that the plate width and yield point stress of the plate are the same, the plate thickness can be measured and the amount of reduction of the plate can be adjusted. Since the air pressure can be automatically adjusted to the “theoretical set pressure of a simple air cylinder”, it is not necessary to vary the mechanical structure as shown in the “ECO1” graph. Therefore, the air consumption can be reduced as described above. Hereinafter, an air pressure adjusting mechanism for adjusting the air pressure of the air cylinder 14 of FIG. 1 will be described.

  The air pressure adjusting mechanism 25 in FIG. 3 includes a drive source 26, a speed reducer 27, and an electropneumatic regulator 28. The drive source 26 is constituted by a servo motor or a motor with an encoder. The drive source 26 is attached to the rotating shaft 10a of the inlet-side eccentric shaft mechanism 10 from the back surface side of the fixed frame 2 of FIG. 1 via the speed reducer 27, and rotates the rotating shaft 10a. A signal related to the rotational phase of the drive source 26 is sent to the electropneumatic regulator 28. When the rotary shaft 10a rotates counterclockwise, that is, in the direction D2, as viewed from the front side of the drawing of FIG. 1 by the drive source 26, the swing frame 3 is lowered with the eccentric shaft 9b as a fulcrum, and the amount of reduction to the plate material is reduced. To increase. On the contrary, when the rotating shaft 10a rotates in the clockwise direction D1, the amount of reduction on the plate material decreases. The amount of reduction on the plate material is determined by the swing start position and swing range of the rotary shaft 10a. The swing start position and swing range of the rotary shaft 10a are determined by the rotational phase of the drive source 26 decelerated by the speed reducer 27. Desired. The electropneumatic regulator 28 automatically reduces the air pressure of the air cylinder 14 in FIG. 1 from the change in rotational phase information of the drive source 26 when the plate material reduction amount increases, and when the plate material reduction amount decreases, the air pressure decreases. Increase automatically.

  4 is a modification of the air pressure adjusting mechanism 25, and includes gears 31 and 32, a potentiometer 33, an electropneumatic regulator 28, and a drive source of the rotating shaft 10a (not shown). The rotating shaft 10a and the gear 31 attached coaxially to the rotating shaft 10a are rotated by a driving source such as a motor (not shown). The rotational phase of the gear 32 meshing with the gear 31 is detected by a potentiometer 33. When the rotational phase of the gear 32 is changed by increasing / decreasing the reduction amount of the plate material, the electropneumatic regulator 28 reduces the pressure as the reduction amount of the plate material increases based on the rotation phase information of the gear 32 by the potentiometer 33, or The air pressure of the air cylinder 14 in FIG. 1 is automatically adjusted so that the pressure increases as the reduction amount of the plate material decreases.

  5A and 5B is an example of an air pressure adjusting mechanism that does not use an electropneumatic regulator. The air pressure adjusting mechanism 37 includes a cam 38, a pressure regulator 39 having a regulator pressure adjusting shaft 39a, a regulator pressure. The roller mechanism 40 which is an adjustment mechanism and the drive source of the rotating shaft 10a which is not shown in figure are comprised. The cam 38 has a shape in which the radius gradually increases as it rotates in the clockwise direction D1 and is coaxially attached to the rotary shaft 10a. The pressure regulator 39 increases or decreases the pressure of the air cylinder 14 in FIG. 1 based on the advance / retreat direction of the regulator pressure adjusting shaft 39a. The roller mechanism 40 includes a base end portion 40a, roller arms 40b and 40c attached to the base end portion, and a roller 40d rotatably supported at the tip ends of the roller arms 40b and 40c. A proximal end portion 40a of the roller mechanism 40 is integrally attached to the distal end of the regulator pressure adjusting shaft 39a. Both the regulator pressure adjusting shaft 39a and the roller 40d are urged toward the rear cam 38 by a spring member (not shown).

  When the cam 38 in FIG. 5B is rotated counterclockwise D2 by a motor, an air cylinder, and a driving source such as a manually operated handle that are not shown in the figure, the amount of rolling down on the plate material 17 in FIG. Rotates along the outer periphery of the cam 38 whose diameter increases. At the same time, the regulator pressure adjusting shaft 39a extends rearward (R direction) by a biasing force of a spring member (not shown), and automatically reduces the air pressure generated by the air cylinder 14 of FIG. On the other hand, when the cam 38 rotates in the clockwise direction D1, the amount of reduction of the plate material 17 decreases, and the regulator pressure adjustment shaft 39a is contracted forward (F direction) by the roller 40d rotating along the outer periphery of the cam 38, The air pressure generated by the air cylinder 14 of FIG. 1 is automatically increased.

  Next, the plate material correction operation and pressure adjustment in the leveler feeder of this embodiment will be described with reference to the flowcharts of FIGS. 6, 6A, and 6B. As shown in Fig. 6A, the plate material is adjusted manually (see reference numerals 45 and 46), or as shown in Fig. 6B, a drive source such as a motor other than manual (see reference numerals 47 and 48. 48 is the air pressure adjustment. In other words, the drive source of the rotating shaft 10a of the inlet-side eccentric shaft mechanism 10 shown in FIG. 1, FIG. 5, FIG. 7 and FIG. In the case of a hand-operated handle by human power or a motor or the like (when an electropneumatic regulator is not employed), the operator turns the handle (see reference numeral 49) or operates the operation panel (see reference numeral 48c). Thus, the plurality of upper work rolls 4 of the swing frame 3 are lowered to a position where a predetermined reduction amount is reached. At the same time, the regulator pressure adjusting shafts 39a, 39a ′, 39a ″ in FIGS. 5, 7, and 8 reduce the air pressure settings of the pressure regulators 39, 39 ′, 39a ″ to numerical values necessary for correction (reference numerals 51, 39). 51 '), the adjustment of the air pressure of the air cylinder 14 in FIG. 1 is completed (see reference numeral 53). When the drive source of the rotary shaft 10a of the inlet side eccentric shaft mechanism 10 is a motor or the like (when an electropneumatic regulator is not employed), the leveler feeder has a plate thickness measuring means (see reference numeral 48a). The reduction amount necessary for correcting the plate material is calculated based on the measurement result of the plate thickness of the plate material passed through the leveler feeder. At this time, the reduction amount adjustment mechanism automatically adjusts the reduction amount based on the calculated reduction amount (the automatic reduction amount adjustment means according to claim 7; refer to reference numeral 48b). There is no need to adjust the amount of reduction even if the thickness changes. As a result, since the air cylinder of FIG. 1 presses a plurality of upper work rolls 4 against the plate material with air necessary for correction to the plate material, the air consumption to be used is saved.

  Further, referring to FIG. 6, a case will be described in which the amount of reduction of the plate material is adjusted by a drive source such as a motor other than manual, and the electropneumatic regulator 28 as shown in FIGS.

  Air pressure calculation means for calculating the air pressure corresponding to the correction force to be applied to the plate material from the input values of the plate thickness, plate width, and yield point stress of the plate material to be corrected is mounted on the leveler feeder shown in FIGS. If not (see reference numerals 54 and 55), the operator sets the leveler feeder in advance so that the pressure setting of the electropneumatic regulator 28 changes in accordance with the change in the reduction amount with respect to the specification of the plate material to be corrected (reference numeral 54). 55). For example, assuming that the plate width and the yield point stress of the plate material are the same, and the amount of reduction required to correct the plate material is 1 mm, 2 mm, and 3 mm, the corresponding air pressure of the electropneumatic regulator 28 The leveler feeder is set so that the set value changes to 0.4 MPa, 0.3 MPa, and 0.2 MPa. In that case, when the operator operates the operation panel (see reference numeral 50 ′) to lower the upper work roll 4 and the amount of reduction of the plate material is changed from 1 mm to 3 mm, the electropneumatic regulator 28 is The air pressure of the air cylinder 14 in FIG. 1 is reduced from 0.4 MPa to 0.2 MPa (see reference numeral 52), and the pressure change of the air cylinder 14 is completed (see reference numeral 53). As a result, the consumption of air used for the air cylinder 14 is reduced.

  On the other hand, an air pressure calculating means for calculating an air pressure corresponding to the correction force to be applied to the plate material from input values of the plate thickness, plate width, and yield point stress of the plate material to be corrected (see reference numeral 59a). When the air pressure calculating means) is mounted on the leveler feeder of FIGS. 3 and 4 (see reference numeral 54a), the operator preliminarily supplies the plate width and yield point stress of the plate material to be corrected to the air pressure calculating means. Input (see reference numeral 56). When the plate thickness detecting means (see reference numeral 57) provided in the feed roll mechanism 8 in FIG. 1 is provided, the plate is set by setting the plate material on the leveler feeder without the operator inputting the plate thickness. The thickness is automatically detected and input to the air pressure calculating means (see reference numeral 59a). On the other hand, when the air pressure adjusting mechanism does not include the plate thickness detection means, the operator inputs the plate thickness of the plate material to be corrected into the air pressure calculation means in advance (see reference numeral 58).

  When the plate thickness, plate width, and yield point stress of the plate material to be corrected are input to the air pressure calculation means (see reference numeral 59a), the air pressure calculation means calculates the air pressure of the air cylinder 14 necessary for correcting the plate material. The reduction amount corresponding to the air pressure is calculated by the reduction amount calculation means for calculating the reduction amount corresponding to the air pressure. When the reduction amount adjusting mechanism is interlocked with the reduction amount calculating means, the reduction amount is automatically adjusted (see reference numeral 59b). When the reduction amount is adjusted, the electropneumatic regulator 28 increases or decreases the air pressure of the air cylinder 14 in FIG. 1 based on the reduction amount (see reference numerals 52 and 59b), and ends the setting of the air pressure (reference numeral). 53). As a result, since the air cylinder of FIG. 1 presses the plurality of upper work rolls 4 against the plate material 17 with air necessary for correction to the plate material, consumption of air used is reduced.

  The air pressure adjusting mechanism 60 in FIGS. 7A and 7B is an example of an air pressure adjusting mechanism that does not use an electropneumatic regulator. The air pressure adjusting mechanism 60 includes a pinion gear 61 rack 63 and a pressure regulator 39 ′ having a regulator pressure adjusting shaft 39a ′. And a rotating shaft 10a that is rotated by a driving source (not shown). The pinion gear 61 and the rack 63 constitute a regulator pressure adjusting mechanism 64. The pinion gear 61 is attached coaxially to the rotating shaft 10a, and the rack 63 is attached to the tip of the regulator pressure adjusting shaft 39a '. Both the pinion gear 61 and the rack 63 mesh with the pinion gear 62.

  When the pinion gear 61 in FIG. 7B and the rotating shaft 10a in FIG. 1 are rotated in the counterclockwise direction D2 by a driving source such as a motor, an air cylinder, and a hand-operated handle that is not shown in the figure, the plate material 17 in FIG. At the same time, the regulator pressure adjustment shaft 39a 'extends rearward (R direction) and automatically reduces the air pressure generated by the air cylinder 14 of FIG. When the pinion gear 61 and the rotating shaft 10a of FIG. 1 rotate in the clockwise direction D1, the amount of reduction of the plate material 17 decreases, and the regulator pressure adjusting shaft 39a ′ contracts forward (F direction), and the air pressure of the air cylinder 14 is reduced. Increase automatically.

  The air pressure adjusting mechanism 65 in FIGS. 8A and 8B is an example of an air pressure adjusting mechanism that does not use an electropneumatic regulator, and includes a link 66 that is a regulator pressure adjusting mechanism, and a regulator pressure adjusting shaft 39a ″. The pressure regulator 39 '' and a drive source for the rotating shaft 10a (not shown) are included. One end of the link 66 is rotatably attached by a pin 67a at a position eccentric from the rotation center O4 of the rotary shaft 10a, and rotates around the center O6. The other end of the link 66 is rotatably attached to the tip of the regulator pressure adjusting shaft 39a by a pin 67b. When the rotating shaft 10a shown in FIGS. 1 and 8B is rotated counterclockwise in the direction D2 by a motor (not shown), an air cylinder, and a driving source such as a hand-operated handle by human power, the amount of reduction on the plate material 17 shown in FIG. 1 increases. At the same time, the regulator pressure adjusting shaft 39a '' extends rearward (R direction) by the operation of the link 66, and automatically reduces the air pressure generated by the air cylinder 14 of FIG. When the rotating shaft 10a rotates in the clockwise direction D1, the amount of reduction of the plate material 17 decreases, and the regulator pressure adjusting shaft 39a contracts forward (F direction) by the operation of the link 66, and the air pressure of the air cylinder 14 is automatically increased. Increase to.

1 Leveler feeder 2 Fixed frame (fixed member)
3 Oscillating frame (oscillating member)
4 Multiple upper work rolls 5 Multiple lower work rolls 6 Rolling amount adjustment mechanism 7 Air cylinder mechanism 8 Feed roll mechanism 9a, 10a, 12a Rotating shaft 10 Entrance side eccentric shaft mechanism (swing mechanism of claim 6)
14 Air cylinder 25, 30, 37, 60, 65 Air pressure adjustment mechanism 28 Pneumatic regulator 39, 39 ′, 39 ″ Pressure regulator 39a, 39a ′, 39a ″ Regulator pressure adjustment shaft 40 Roller mechanism (regulator pressure adjustment mechanism) )
58 Plate thickness measuring means 46b, 46b ', 59a Air pressure calculating means 64 Regulator pressure adjusting mechanism 66 Link (regulator pressure adjusting mechanism)

Claims (7)

The plurality of lower work rolls attached in a row to the fixed member, the plurality of upper work rolls attached in a row to the swing member so as to be staggered with respect to the lower work roll, and the air pressure of the air cylinder When the plate member is clamped with an air cylinder mechanism that swings the swing member with respect to the fixed member and loads the plate member between the plurality of upper and lower work rolls to apply a correction force to the plate member or releases the plate member. A reduction amount adjustment mechanism that adjusts the amount of reduction that is the bending amount of the plate material by changing the vertical distance between the plurality of upper work rolls and the plurality of lower work rolls, and a plate material that has been corrected in bending, is preset. In a leveler feeder having a feed roll mechanism for conveying with a different feed length,
An air pressure adjustment mechanism is provided in the air cylinder mechanism that increases or decreases the air pressure of the air cylinder to an air pressure corresponding to a required correction force in conjunction with an increase or decrease in the amount of reduction of the plate material adjusted by the reduction amount adjustment mechanism. A leveler feeder characterized by that.   The air pressure adjustment mechanism is based on the maximum plate width that can be corrected based on the specifications of the material. As the plate material becomes thicker, a larger correction force is applied, and as the plate material becomes thinner, the plate material is corrected with a larger reduction amount. As described above, an air pressure calculating means for calculating an air pressure for generating a correction force required for the plate material from a plate thickness of the input plate material, an electropneumatic regulator for generating an air pressure in conjunction with the air pressure calculating means, The leveler feeder according to claim 1, comprising:   In addition to the plate thickness of the input plate material, the air pressure calculation means calculates an air pressure that generates a correction force necessary for the plate material from the plate width of the input plate material and the yield point stress. The leveler feeder according to claim 2.   4. The leveler feeder according to claim 2, further comprising a plate thickness measuring unit that measures a plate thickness of the plate and inputs the measured plate thickness to the air pressure calculating unit. The feed roll mechanism has a lower feed roll that holds a plate material, and an upper feed roll that moves forward and backward with respect to the lower feed roll and sandwiches the plate material between the lower feed roll,
5. The leveler feeder according to claim 4, wherein the plate thickness measuring unit includes a displacement sensor that detects a displacement amount of the upper feed roll until the plate member is sandwiched between the plate member and the lower feed roll. The reduction amount adjusting mechanism includes a rotating shaft that swings around a central axis, and a plurality of upper work rolls of the swinging member on the basis of a swinging direction and a swinging range of the rotating shaft. A swing mechanism that adjusts the amount of reduction to the plate material based on the plate thickness by moving it back and forth toward the work roll;
The air pressure adjustment mechanism applies a greater correction force as the plate material becomes thicker, and adjusts the air pressure of the air cylinder by a regulator pressure adjustment shaft that moves forward and backward so that the plate material is corrected with a larger reduction amount as the plate material becomes thinner. The leveler feeder according to claim 1, further comprising: a pressure regulator that increases and decreases; and a regulator pressure adjustment mechanism that moves the regulator pressure adjustment shaft forward and backward at a position interlocked with a swing range of the rotary shaft. . Having plate thickness measuring means,
The reduction amount adjusting mechanism includes an automatic reduction amount adjusting means for automatically adjusting a reduction amount of the plate material based on a measured value of the plate thickness measured by the plate thickness measuring means. The leveler feeder according to 1 or 6.

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