Trim scrap winding method and trim scrap winding equipment

Abstract

To improve treatment efficiency.SOLUTION: A trim chip winding method includes: an introduction step of introducing a trim chip by a pusher into a region where a trim chip of a steel plate is wound by a winding shaft; an insertion step of moving a tip of the winding shaft to an insertion position when it is detected by a sensor that the trim chip reaches a predetermined set height corresponding to the winding shaft; and a winding step of winding the trim chip in the region with the winding shaft in the state where the tip is arranged at the insertion position.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present disclosure relates to a trim scrap winding method and a trim scrap winding equipment. [Background technology]

[0002] BACKGROUND ART There is known a technique for winding up trim scraps generated during side trimming of steel sheets in a lump and discharging the lump-shaped trim scraps (see, for example, Patent Documents 1 to 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-84538 [Patent Document 2] Japanese Patent Application Laid-Open No. 2007-222915 [Patent Document 3] Japanese Patent Application Publication No. 10-202316 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides a trim scrap winding method and trim scrap winding equipment that are useful for improving processing efficiency. [Means for solving the problem]

[0005] A trim scrap winding method according to one aspect of the present disclosure includes an introduction step of using a pusher to introduce the trim scrap into an area where the steel plate trim scrap is wound by the winding shaft; an insertion step of moving the tip of the winding shaft to an insertion position when a sensor detects that the trim scrap has reached a predetermined set height corresponding to the winding shaft; and a winding step of winding the trim scrap within the area using the winding shaft with its tip positioned at the insertion position.

[0006] The winding method may further include a stopping step of stopping the operation of the pusher in the introducing step when the sensor detects that the trim scraps have reached a set height, and another introducing step of resuming the operation of the pusher after the inserting step and before the winding step to introduce more trim scraps into the area.

[0007] In the introducing step, the trim scraps may be introduced onto a table that can be raised and lowered below the winding shaft. The winding method may further include a lifting step of lifting the table after the inserting step and before the winding step.

[0008] In the introducing step, the trim scraps may be introduced onto a table that can be raised and lowered below the winding shaft. The winding method may further include a first raising step of raising the table after the introducing step, a stopping step of stopping the raising of the table in the first raising step when a sensor detects that the trim scraps have reached a set height, and a second raising step of further raising the table after the inserting step and before the winding step.

[0009] A trim scrap winding facility according to one aspect of the present disclosure includes a winding device and a control device that controls the winding device. The winding device includes a winding spindle that winds steel sheet trim scraps, a first drive unit that moves the winding spindle along its axial direction, a second drive unit that rotates the winding spindle, a sensor that can detect when the trim scraps reach a predetermined set height corresponding to the winding spindle within an area where the trim scraps are wound by the winding spindle, and a pusher that pushes the trim scraps. The control device is configured to perform the following steps: an introduction step in which the pusher introduces the trim scraps into the area; an insertion step in which the first drive unit moves the tip of the winding spindle to an insertion position when the sensor detects that the trim scraps have reached the set height; and a winding step in which the second drive unit rotates the winding spindle with the tip of the winding spindle positioned at the insertion position to wind the trim scraps within the area. [Effects of the Invention]

[0010] According to the present disclosure, a trim scrap winding method and trim scrap winding equipment useful for improving processing efficiency are provided. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a schematic diagram showing an example of a trim scrap winding facility. [Figure 2] FIG. 2 is a side view schematically showing an example of a winding shaft and its surrounding members. [Figure 3] FIG. 3 is a block diagram illustrating an example of a functional configuration of the control device. [Figure 4] FIG. 4 is a block diagram illustrating an example of a hardware configuration of the control device. [Figure 5] FIG. 5 is a flowchart showing an example of a winding method. [Figure 6] FIG. 6 is a schematic diagram illustrating the state of the preparation stage for winding. [Figure 7] 7(a) and 7(b) are schematic diagrams illustrating the state of the winding preparation stage. [Figure 8] FIG. 8 is a schematic diagram illustrating the state of the preparation stage for winding. [Figure 9] FIG. 9 is a flowchart showing an example of a winding method according to the second embodiment. [Figure 10] FIG. 10 is a schematic diagram illustrating the state of the winding preparation stage. [Figure 11] 11(a) and 11(b) are schematic diagrams illustrating the state of the winding preparation stage. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, several embodiments of the present disclosure will be described with reference to the drawings. In the description, the same elements or elements having the same functions are denoted by the same reference numerals, and redundant description will be omitted. Some drawings show an XYZ Cartesian coordinate system. In the following description, the Z axis corresponds to the vertical direction, and the X and Y axes correspond to the horizontal directions.

[0013] [First embodiment] First, a trim scrap winding system according to a first embodiment will be described with reference to FIGS. 1 to 8. The winding system 1 (trim scrap winding system) shown in FIG. 1 is a system for winding trim scrap Ws generated from a steel sheet Wb (steel strip). The steel sheet Wb is formed, for example, by rolling. In a steel processing line, side trimming is performed using a side trimmer or the like to remove irregularities such as mill edges at both ends in the width direction of the steel sheet Wb. This side trimming generates a large amount of trim scrap Ws. The trim scrap Ws generated from the steel sheet Wb is strip-shaped scrap. The winding system 1 winds the trim scrap Ws and compresses it into a lump, and discharges the lump-shaped trim scrap Ws into a bucket or the like outside the system. The lump-shaped trim scrap Ws discharged outside the system is collected, for example, by a collection vehicle and transported to a treatment plant or the like. The winding system 1 includes a winding device 10 and a control device 50.

[0014] The winding device 10 operates based on control instructions from the control device 50, winds up the trim scraps Ws, and discharges the chunks of trim scraps Ws formed by winding to the outside of the system. The winding device 10 is also called a scrap baller. The winding device 10 is disposed near a side trimmer 92. The steel sheet Wb is fed into the side trimmer 92 by a delivery roller 94 driven by a drive unit. The side trimmer 92 cuts both ends of the steel sheet Wb in the width direction. The two strips of trim scraps Ws generated by the side trimmer 92 are introduced into the winding device 10. The winding device 10 has, for example, a chute 12, a connection unit 14, a shear 16, a pusher 18, and a baller unit 20.

[0015] The chute 12 is disposed below the side trimmer 92. The upper end of the chute 12 is open, and the trim scraps Ws formed by being cut by the side trimmer 92 fall into the chute 12. The trim scraps Ws that fall into the chute 12 accumulate (are temporarily stored) at the bottom of the chute 12. An outlet for discharging the trim scraps Ws from the chute 12 is provided on the side of the bottom of the chute 12. The connection section 14 connects the outlet of the chute 12 to the borer section 20. The shear 16 is provided in the connection section 14 and cuts the trim scraps Ws within the connection section 14.

[0016] The pusher 18 is a member that pushes the trim scraps Ws. The pusher 18 is configured to push the trim scraps Ws accumulated at the bottom of the chute 12 into the borer section 20. The pusher 18 is provided, for example, at the bottom of the chute 12 and the connection section 14 so as to be able to move forward and backward in the horizontal direction (the X-axis direction in FIG. 1 ). A pusher drive unit 19 is connected to the pusher 18, and the pusher drive unit 19 has a drive source such as a hydraulic cylinder. The pusher 18 may be movable between a standby position where its tip is located outside the chute 12 and a pushing position where its tip is located within the borer section 20. The pusher 18 moves from the standby position to the pushing position when pushing the trim scraps Ws at the bottom of the chute 12 into the borer section 20.

[0017] The borer unit 20 winds up the trim scraps Ws using a winding shaft to form a lump of trim scraps Ws (hereinafter referred to as a "ball B"). The balls B formed by the borer unit 20 are cylindrical. The borer unit 20 has a winding shaft 22, a reduction roller 28, a table 30, and a gate shutter 38. At least a portion of each of the winding shaft 22, the reduction roller 28, the table 30, and the gate shutter 38 may be disposed within a processing area (hereinafter referred to as a "baller chamber 21b") formed by the casing 21a.

[0018] The winding shaft 22 is a member that winds up the trim scraps Ws. The winding shaft 22 is configured to wind up the trim scraps Ws in the baller chamber 21b and form a ball B. The winding shaft 22 is also called a mandrel or mandrel shaft. As shown in FIG. 2, the winding shaft 22 is formed to extend in one horizontal direction (the Y-axis direction in FIG. 2). The tip 22a of the winding shaft 22 is formed so that the trim scraps Ws are caught when winding of the trim scraps Ws begins. The tip 22a is formed, for example, in a fork shape. After the winding shaft 22 hooks the trim scraps Ws with the tip 22a (the groove of the fork) and begins winding, the winding shaft 22 continues winding the trim scraps Ws until the ball B reaches a predetermined size. When the ball B reaches the predetermined size, the winding shaft 22 stops winding the trim scraps Ws. After the winding of the trim scraps Ws is interrupted, the ball B formed on the winding shaft 22 is discharged.

[0019] The winding spindle 22 is provided so as to be movable along its axial direction. An axial drive unit 24 (first drive unit) is connected to the winding spindle 22. The axial drive unit 24 includes a drive source such as a hydraulic cylinder and moves the winding spindle 22 along the axial direction of the winding spindle 22 (the extension direction of the winding spindle 22). Before the winding by the winding spindle 22 starts (when the ball B is being paid out), the tip end 22a of the winding spindle 22 is positioned at a standby position P1. When the winding of the trim scraps Ws by the winding spindle 22 starts, the axial drive unit 24 advances (inserts) the tip end 22a of the winding spindle 22 to an insertion position P2 for winding the trim scraps Ws. After the winding by the winding spindle 22 is interrupted, the axial drive unit 24 retracts the tip end 22a of the winding spindle 22 to the standby position P1.

[0020] In one example, guide plates 23a and 23b are provided aligned in the axial direction of the winding shaft 22 to form the baller chamber 21b. The guide plates 23a and 23b are perpendicular to the axial direction of the winding shaft 22, and the trim scraps Ws to be wound are accommodated between the guide plates 23a and 23b. The guide plate 23a has a through-hole for passing the winding shaft 22 therethrough. The standby position P1 may be set outside the area between the guide plates 23a and 23b. The insertion position P2 may be set near the guide plate 23b (for example, a position several millimeters away from the guide plate 23b).

[0021] The winding shaft 22 is rotatable about a central axis extending in the extension direction of the winding shaft 22. A rotation drive unit 26 (second drive unit) is connected to the winding shaft 22. The rotation drive unit 26 includes a drive source such as an electric motor, and rotates the winding shaft 22 about a central axis extending in the axial direction of the winding shaft 22 (the extension direction of the winding shaft 22). When the winding shaft 22 is positioned at the insertion position P2, the rotation drive unit 26 rotates the winding shaft 22 about the central axis, thereby winding up the trim waste Ws by the winding shaft 22.

[0022] Returning to FIG. 1 , the reduction roller 28 is disposed above the winding shaft 22 and is configured to press (apply pressure to) the circumferential surface of the ball B formed by the winding shaft 22. The reduction roller 28 has a circumferential surface that faces the circumferential surface of the ball B formed by the winding shaft 22. The reduction roller 28 is configured to be movable in the vertical direction by a hydraulic cylinder or the like, and may be provided to be rotatable about an axis parallel to the axial direction of the winding shaft 22. The reduction roller 28 may apply a predetermined pressure to the circumferential surface of the ball B formed by the winding shaft 22 while rotating in the direction opposite to the rotational direction of the winding shaft 22. The pressure of the reduction roller 28 crushes the trim waste Ws wound by the winding shaft 22, and a ball-shaped mass of trim waste Ws is formed around the winding shaft 22.

[0023] The table 30 is disposed below the winding device 10. The table 30 is a member that supports the trim scraps Ws and the balls B during the preparation stage before winding the trim scraps Ws and during winding, and also guides the balls B when discharging them. The table 30 is also referred to as a ball stopper or a kick-out table. The table 30 includes, for example, a first table portion 32 and a second table portion 34.

[0024] The base end of the first table portion 32 is supported rotatably in a direction parallel to the axial direction of the winding shaft 22 (the Y-axis direction in FIG. 1), and the first table portion 32 is rotatable about a horizontal axis passing through the base end. The base end of the second table portion 34 is supported by the tip end of the first table portion 32 so as to be rotatable in a direction parallel to the axial direction of the winding shaft 22. The second table portion 34 is rotatable about a horizontal axis passing through the base end.

[0025] A table driving unit 36 ​​is connected to each of the first table portion 32 and the second table portion 34. The table driving unit 36 ​​includes a driving source such as an electric motor or a cylinder, and rotates each of the first table portion 32 and the second table portion 34 about the corresponding axis. During the preparation stage before winding the trim scraps Ws and during winding, the first table portion 32 and the second table portion 34 are positioned so that the angle formed between the upper surface of the first table portion 32 and the upper surface of the second table portion 34 is less than 180° when viewed from the axis (Y-axis direction).

[0026] During winding of the trim scraps Ws, the first table portion 32 may rotate about an axis passing through the base end of the first table portion 32, causing the first table portion 32 and the second table portion 34 to descend depending on the size of the balls B. When dispensing the balls B, the first table portion 32 and the second table portion 34 may be positioned so that the angle formed between the upper surfaces of the first table portion 32 and the second table portion 34 is approximately equal to 180° when viewed from the axis (Y-axis direction).

[0027] The gate shutter 38 is configured to switch between a closed state in which the borer chamber 21b is closed and an open state in which the borer chamber 21b is connected to the outside of the system. During the preparation stage before winding the trim scraps Ws and during winding, the gate shutter 38 is closed, and the borer chamber 21b is in a closed state. When dispensing the balls B, the gate shutter 38 is opened, and the borer chamber 21b is in an open state. The gate shutter 38 prevents the trim scraps Ws from leaking out of the borer chamber 21b during the preparation stage and winding. The above-described configuration of the borer unit 20 is an example and can be modified as appropriate. The table 30 may be a single-stage table instead of the two-stage table described above (the first table unit 32 may be provided without the second table unit 34). At least a portion of the table 30 may be rotatable to a substantially vertical angle, and the table 30 may function as a gate shutter. In this case, the gate shutter 38 does not need to be provided in the boring section 20.

[0028] The winding device 10 includes a sensor 40. The sensor 40 is capable of detecting that the trim scraps Ws have reached a predetermined set height (hereinafter referred to as the "set height Ht") corresponding to the winding shaft 22 in the baller chamber 21b, where the trim scraps Ws are wound by the winding shaft 22. In the preparation stage for winding the trim scraps Ws by the winding shaft 22, for example, the pusher 18 introduces the trim scraps Ws that have remained at the bottom of the chute 12 into the baller chamber 21b and deposits them on the table 30. The amount of trim scraps Ws deposited on the table 30 increases depending on the amount of operation of the pusher 18 (the amount of trim scraps Ws introduced by the pusher 18), and the upper limit of the trim scraps Ws deposited on the table 30 becomes higher. The sensor 40 is capable of detecting that the upper limit of the trim scraps Ws deposited on the table 30 has reached the set height Ht at a predetermined position in the axial direction of the winding shaft 22.

[0029] The sensor 40 may be of any type as long as it can detect that the trim scraps Ws have reached the set height Ht during the preparation stage for winding by the winding shaft 22. The sensor 40 may be, for example, a laser distance meter or a photoelectric sensor. As shown in FIG. 2, the sensor 40 may detect that the trim scraps Ws have reached the set height Ht at an insertion position P2 in the axial direction of the winding shaft 22. The insertion position P2 is the position at which the tip 22a of the winding shaft 22 (e.g., the groove portion of the fork) is located when the winding shaft 22 is positioned for winding. The sensor 40 may detect the height of the trim scraps Ws by processing an image acquired by a camera.

[0030] The set height Ht is preset at a height position that overlaps with the winding shaft 22. That is, the set height Ht is set between the upper end and the lower end of the winding shaft 22. From the viewpoint of making it easier to hook the trim scraps Ws onto the tip end 22a of the winding shaft 22, the set height Ht may be set between the center in the height direction of the winding shaft 22 (the center of the winding shaft 22) and the lower end of the winding shaft 22. For example, if the sensor 40 is a laser rangefinder, the sensor 40 measures the distance to the target object by emitting a laser beam to a point at the set height Ht at the insertion position P2 and receiving the reflected laser beam. When the distance measured by the sensor 40 substantially matches the distance between the sensor 40 and the set height Ht at the insertion position P2, it is determined that the trim scraps Ws have reached the set height Ht.

[0031] The control device 50 is a device that controls the winding device 10. The control device 50 is configured with one or more computer devices. The control device 50 controls each component of the winding device 10 according to a predetermined control procedure. The control device 50 is configured to execute at least the following steps: a step of introducing the trim scraps Ws into the baller chamber 21b using the pusher 18; a step of moving the tip end 22a of the winding spindle 22 to the insertion position P2 using the axial drive unit 24 when the sensor 40 detects that the trim scraps Ws have reached the set height Ht; and a step of rotating the winding spindle 22 with the tip end 22a positioned at the insertion position P2 using the rotation drive unit 26, thereby winding the trim scraps Ws in the baller chamber 21b.

[0032] 3, the control device 50 has, as its functional configuration (hereinafter referred to as "functional modules"), a trim amount calculation unit 52, an introduction control unit 54, a sensor information acquisition unit 56, a shaft insertion control unit 58, a winding control unit 62, and a payout control unit 64. The processes executed by these functional modules correspond to the processes executed by the control device 50.

[0033] The trim amount calculation unit 52 calculates the amount of trim scraps Ws introduced into the chute 12 based on information from the steel sheet process line. The trim amount calculation unit 52, for example, acquires information correlating with the amount of trim scraps Ws introduced into the chute 12 from the side trimmer 92, and calculates the total amount of trim scraps Ws introduced into the chute 12 (the total amount introduced since a reference time). The reference time may be reset each time one ball B is formed. The trim amount calculation unit 52 may calculate a length indicating the amount of trim scraps Ws introduced into the chute 12 based on information indicating the drive amount of the blades provided in the side trimmer 92. The trim amount calculation unit 52 may calculate the amount of trim scraps Ws introduced into the chute 12 based on information indicating the amount of steel sheet Wb sent out to the side trimmer 92.

[0034] The introduction control unit 54 executes a step (an introduction step) of introducing the trim scraps Ws into the baller chamber 21b by driving the pusher 18 with the pusher drive unit 19. When the amount of trim scraps Ws introduced into the chute 12 reaches a predetermined amount, the introduction control unit 54 starts driving the pusher 18 with the pusher drive unit 19 so that the introduction (supply) of the trim scraps Ws into the baller chamber 21b begins. The introduction control unit 54 causes the pusher drive unit 19 to advance the pusher 18, which is disposed in the standby position. As a result, the trim scraps Ws remaining at the bottom of the chute 12 are pushed into the baller chamber 21b, and the trim scraps Ws accumulate on the table 30. The introduction control unit 54 may execute a step (a stop step) of stopping the driving of the pusher 18 with the pusher drive unit 19 when the sensor 40 detects that the trim scraps Ws have reached the set height Ht.

[0035] After the tip 22a of the winding spindle 22 is positioned at the insertion position P2, the introduction control unit 54 may execute a step (another introduction step) of introducing further trim scraps Ws into the baller chamber 21b by causing the pusher drive unit 19 to resume driving the stopped pusher 18. When the pusher 18 reaches a predetermined target position (the above-mentioned pushing position), the introduction control unit 54 causes the pusher drive unit 19 to stop driving the pusher 18. Immediately before or after winding by the winding spindle 22 starts, the introduction control unit 54 may cause the pusher drive unit 19 to retract the pusher 18 to the standby position.

[0036] The sensor information acquisition unit 56 acquires the detection results of the sensor 40. If the sensor 40 is a laser rangefinder, information indicating the distance measured by the sensor 40 may be acquired. The distance measured by the sensor 40 varies based on the amount (height) of the trim scraps Ws piled up on the table 30. For example, when the trim scraps Ws on the table 30 reach the set height Ht at the insertion position P2, the distance measured by the sensor 40 approximately matches the distance between the set height Ht at the insertion position P2 and the sensor 40. The control device 50 stores in advance the distance between the set height Ht at the insertion position P2 and the sensor 40, thereby making it possible to detect that the trim scraps Ws have reached the set height Ht.

[0037] When the sensor 40 detects that the trim scraps Ws have reached the set height Ht, the shaft insertion control unit 58 executes an inserting step of moving the tip end 22a of the winding spindle 22 to the insertion position P2. After the pusher drive unit 19 interrupts the drive of the pusher 18 based on the detection result of the sensor 40, the shaft insertion control unit 58 may cause the axial drive unit 24 to move the tip end 22a of the winding spindle 22 to the insertion position P2. For example, after interrupting the drive, the shaft insertion control unit 58 controls the axial drive unit 24 so that the tip end 22a advances from the standby position P1 to the insertion position P2. When a sensor (different from the sensor 40) provided at a position corresponding to the insertion position P2 detects that the tip end 22a has reached the insertion position P2, the shaft insertion control unit 58 may cause the axial drive unit 24 to stop the tip end 22a at the insertion position P2.

[0038] The winding control unit 62 executes a step (winding step) of winding the trim scraps Ws in the baller chamber 21b by the winding spindle 22 with the leading end 22a positioned at the insertion position P2. After the leading end 22a is positioned at the insertion position P2 and the pusher 18 has advanced to the target position, the winding control unit 62 rotates the winding spindle 22 by the rotation drive unit 26. In accordance with the rotation of the winding spindle 22, the winding control unit 62 may lower the pressure roller 28 so that a predetermined pressure is applied by the pressure roller 28 to the trim scraps Ws wound around the winding spindle 22. The winding control unit 62 may lower the first table unit 32 and the second table unit 34 by the table drive unit 36 ​​in accordance with the size of the ball B formed around the winding spindle 22. When a sensor or the like detects that the ball B formed around the winding shaft 22 has reached a predetermined size, the winding control unit 62 may cause the shear 16 to cut the trim scraps Ws in the connection portion 14. After cutting the trim scraps Ws and continuing winding for a predetermined time, the winding control unit 62 may stop the rotation of the winding shaft 22 by the rotation drive unit 26.

[0039] The payout control unit 64 controls the borer unit 20 to pay out the balls B from the borer chamber 21b after stopping the rotation of the winding spindle 22 by the rotation drive unit 26. For example, the payout control unit 64 controls the axial drive unit 24 to retract the tip end 22a of the winding spindle 22 from the insertion position P2 to the standby position P1. Then, the payout control unit 64 transitions the gate shutter 38 from the closed state to the open state so that the borer chamber 21b is in an open state. Thereafter, the payout control unit 64 positions the first table unit 32 and the second table unit 34 by the table drive unit 36 ​​so that the upper surfaces of the first table unit 32 and the second table unit 34 are substantially flush with each other (changing the elevation angle of the second table unit 34). Through these processes, the balls B are released from the winding spindle 22, roll on the table 30, and are paid out from the borer chamber 21b.

[0040] As shown in Fig. 4, the control device 50 includes a circuit 70. The circuit 70 includes one or more processors 72, a memory 74, a storage 76, and an input / output port 78. The storage 76 includes a computer-readable storage medium, such as a non-volatile semiconductor memory. The storage 76 stores a program for causing the control device 50 to control the winding device 10 according to a preset control procedure. For example, the storage 76 stores a program for configuring each of the above-mentioned functional modules.

[0041] The memory 74 temporarily stores the programs loaded from the storage medium of the storage 76 and the results of calculations by the processor 72. The processor 72 executes the programs in cooperation with the memory 74 to configure each functional module of the control device 50. The input / output port 78 inputs and outputs electrical signals to and from the winding device 10, etc., in accordance with instructions from the processor 72. Note that the circuit 70 is not necessarily limited to one that configures each function using a program. For example, at least some of the functions of the circuit 70 may be configured using a dedicated logic circuit or an ASIC (Application Specific Integrated Circuit) that integrates such logic circuits.

[0042] (Trim scrap winding method) Next, a series of processes executed by the control device 50 will be described as an example of a method for winding trim scraps Ws executed in the winding equipment 1. FIG. 5 is a flowchart showing an example of a series of processes executed by the control device 50 for forming one ball B. This series of processes is performed in parallel with the execution of side trimming by the side trimmer 92. In the initial state of the series of processes, the pusher 18 is placed in a standby position, the tip portion 22a of the winding shaft 22 is placed in a standby position P1, and the table 30 (first table portion 32 and second table portion 34) is placed in an initial position at the start of winding by the winding shaft 22.

[0043] First, the control device 50 executes step S11. In step S11, for example, the control device 50 waits until the amount (length) of trim scraps Ws introduced into the chute 12 from the reference time reaches a predetermined set value. In step S11, the trim amount calculation unit 52 may calculate the amount of trim scraps Ws introduced into the chute 12 from the reference time, and may repeat this calculation at a predetermined interval.

[0044] Next, the control device 50 executes step S12. In step S12, for example, the introduction control unit 54 controls the pusher drive unit 19 to start advancing the pusher 18, which is disposed in the standby position, as shown in FIG. 6. By executing step S12, some of the trim scraps Ws that have been accumulated at the bottom of the chute 12 begins to be introduced into the baller chamber 21b. As a result, the trim scraps Ws begin to be introduced onto the table 30, which is disposed below the set height Ht, and the trim scraps Ws begin to accumulate on the table 30.

[0045] Next, the control device 50 executes step S13. In step S13, for example, the introduction control unit 54 waits until the sensor 40 detects that the trim scraps Ws have reached the set height Ht. The introduction control unit 54 may wait until the sensor 40 detects that the trim scraps Ws have reached the set height Ht at the insertion position P2 relative to the tip end 22a of the winding spindle 22. In this way, the step of introducing the trim scraps Ws into the baller chamber 21b by the pusher 18 is executed until the sensor 40 detects that the trim scraps Ws have reached the set height Ht.

[0046] Next, the control device 50 executes step S14. In step S14, for example, the introduction control unit 54 controls the pusher drive unit 19 to interrupt (stop) the movement of the pusher 18. As a result, the introduction of the trim scraps Ws into the borer chamber 21b is interrupted when the trim scraps Ws reach the set height Ht. The pusher 18 stops before its tip reaches the borer chamber 21b (it stops at a position intermediate between the standby position and the target position). FIG. 7(a) illustrates an example in which the trim scraps Ws accumulated on the table 30 reach the set height Ht at the insertion position P2. In this way, when the sensor 40 detects that the trim scraps Ws have reached the set height Ht, a process is performed in which the operation of the pusher 18, which had been ongoing until then, is stopped.

[0047] Next, the control device 50 executes step S15. In step S15, for example, the shaft insertion control unit 58 causes the axial drive unit 24 to move (advance) the winding shaft 22, with the tip end 22a disposed in the standby position P1, so that the tip end 22a is disposed in the insertion position P2, as shown in FIG. 7(b). As the winding shaft 22 advances, the trim scraps Ws become caught on the tip end 22a. As in steps S13 to S15, when the sensor 40 detects that the trim scraps Ws have reached the set height Ht, a step of moving the tip end 22a of the winding shaft 22 to the insertion position P2 is performed. In this example, the sensor 40 detects that the trim scraps Ws have reached the set height Ht, and the operation of the pusher 18 is interrupted, after which a step of moving the tip end 22a of the winding shaft 22 to the insertion position P2 is performed.

[0048] Next, the control device 50 executes step S16. In step S16, for example, the introduction control unit 54 controls the pusher drive unit 19 to resume the movement (forward movement) of the pusher 18. By resuming the movement, the pusher 18 further pushes the trim scraps Ws in the chute 12 and the connection unit 14 toward the baller chamber 21b, as shown in FIG. 8 . When the movement of the pusher 18 resumes, the tip end 22a of the winding shaft 22 is located at the insertion position P2. Therefore, after the movement of the pusher 18 resumes, the trim scraps Ws pushed into the baller chamber 21b are pushed around the winding shaft 22 so as to approach the winding shaft 22.

[0049] Next, the control device 50 executes steps S17 and S18. In step S17, for example, the introduction control unit 54 waits until the pusher 18 reaches a predetermined target position. In step S18, for example, the introduction control unit 54 controls the pusher drive unit 19 to stop the pusher 18. As in steps S16 to S18, after the leading end 22a is positioned at the insertion position P2, a process is performed in which the trim scraps Ws are pushed around the winding spindle 22 so as to approach the winding spindle 22. In this example, after the leading end 22a is positioned at the insertion position P2, the operation of the pusher 18 is resumed, thereby performing a process in which more trim scraps Ws are introduced into the baller chamber 21b.

[0050] Next, the control device 50 executes step S19. In step S19, for example, the winding control unit 62 controls the rotation drive unit 26 to rotate the winding spindle 22, which is positioned at the insertion position P2, about the horizontal central axis after lowering the pressure down roller 28. While continuing to rotate the winding spindle 22 using the rotation drive unit 26, the winding control unit 62 may continue to lower the pressure down roller 28 so that a predetermined pressure is applied to the trim waste Ws (ball B formed around the winding spindle 22) wound around the winding spindle 22.

[0051] The winding control unit 62 may cause the table driving unit 36 ​​to lower the first table unit 32 and the second table unit 34 in accordance with the size of the ball B formed around the winding shaft 22. The table driving unit 36 ​​may lower the first table unit 32 and the second table unit 34 by rotating the first table unit 32 downward about a horizontal axis passing through the base end of the first table unit 32 while maintaining the orientation of the second table unit 34 relative to the first table unit 32.

[0052] When a sensor or the like detects that the ball B formed around the winding spindle 22 has reached a predetermined size, the winding control unit 62 may use the shear 16 to cut the trim scraps Ws in the connection portion 14. This separates the trim scraps Ws that have been wound onto the winding spindle 22 to form the ball B from the subsequent trim scraps Ws. After cutting the trim scraps Ws and winding the remaining trim scraps Ws onto the winding spindle 22, the winding control unit 62 may stop the rotation of the winding spindle 22 by the rotation drive unit 26. Through the above process, a cylindrical ball B having a predetermined size is formed around the winding spindle 22. In step S19, the trim scraps Ws are wound up in the baller chamber 21b by the winding spindle 22 with the leading end 22a positioned at the insertion position P2.

[0053] Next, the control device 50 executes step S20. In step S20, for example, the payout control unit 64 controls the baller unit 20 to pay out balls B from the baller chamber 21b. In one example, the payout control unit 64 first controls the axial drive unit 24 to retract the tip end 22a of the winding spindle 22 from the insertion position P2 to the standby position P1. Then, the payout control unit 64 transitions the gate shutter 38 from the closed state to the open state so that the baller chamber 21b is in an open state. Thereafter, the payout control unit 64 causes the table drive unit 36 ​​to position the first table unit 32 and the second table unit 34 so that the upper surfaces of the first table unit 32 and the second table unit 34 are substantially flush with each other and form an inclined surface that faces diagonally downward toward the gate shutter 38.

[0054] By executing step S20, the balls B that have come off the winding spindle 22 roll on the table 30 and are dispensed from the baller chamber 21b. The dispensed balls B are stored in a bucket or the like. The control device 50 repeats the series of processes from steps S11 to S20 described above, thereby continuously winding the trim scraps Ws and dispensing the balls B. After a predetermined number of balls B have been dispensed into a bucket or the like, these balls B may be transported to a subsequent process.

[0055] In the series of processes exemplified above, the first introduction of the trim scraps Ws, the insertion of the winding shaft 22, and the second introduction of the trim scraps Ws are performed with the table 30 in a fixed position. Here, the peripheral region is defined as an imaginary region around the winding shaft 22, with the central axis of the winding shaft 22 at its center and having a diameter twice the maximum diameter of the winding shaft 22 at both the top and bottom. The sides of the peripheral region are defined by a casing or a guide plate. Because the table 30 is in a fixed position, the first introduction of the trim scraps Ws by pushing the pusher 18 increases the amount of trim scraps Ws present in the peripheral region. Furthermore, the second introduction of the trim scraps Ws by pushing the pusher 18 further increases the amount of trim scraps Ws present in the peripheral region from the end of the first introduction.

[0056] [Effects of the first embodiment] The trim scrap winding method described above includes an introduction process in which the pusher 18 introduces the trim scraps Ws into the area (baller chamber 21b) where the winding shaft 22 winds the trim scraps Ws of the steel plate Wb; an insertion process in which, when the sensor 40 detects that the trim scraps Ws have reached a predetermined set height Ht corresponding to the winding shaft 22, the tip 22a of the winding shaft 22 is moved to an insertion position P2; and a winding process in which the winding shaft 22 with the tip 22a positioned at the insertion position P2 winds up the trim scraps Ws in the above-mentioned area.

[0057] In the conventional winding method, the length of the trim scraps Ws introduced into the chute 12 is counted based on the actual threading performance, and when the length of the trim scraps Ws introduced into the chute 12 reaches a predetermined length, a series of operations are automatically performed, including a process of pushing the pusher (entire amount) to the target position and a process of moving the tip of the winding shaft to the insertion position. Once the winding shaft is inserted, the winding of the trim scraps Ws begins as the winding shaft rotates. Balls B formed by winding the trim scraps Ws are discharged into a bucket or the like outside the system. The bucket or the like containing a predetermined number of balls B is collected by, for example, a collection vehicle and transported to a processing plant. Therefore, in order to reduce the number of times the balls B discharged outside the system are processed, it is desirable to strongly compress the trim scraps Ws during winding to increase the density of the balls B.

[0058] Here, it was discovered that the greater the amount of trim scraps Ws taken into the baller chamber in the initial stage when the winding spindle starts winding, the stronger the trim scraps Ws are wound up by the reduction roller from the initial stage of the winding spindle 22, and the greater the amount of trim scraps Ws that can be stably wound onto one ball B. The reason that a large amount of trim scraps Ws can be wound up is thought to be that by tightly winding the trim scraps Ws onto the winding spindle 22 from the initial stage, the core of the ball B that is ultimately formed has a high density.

[0059] However, if the leading end of the winding shaft is inserted to the insertion position after a large amount of trim scraps Ws has been taken into the baller chamber using the conventional method, the presence of the large amount of trim scraps Ws may cause many of the trim scraps Ws to get caught on the leading end of the winding shaft, preventing the winding shaft from being inserted. If the winding shaft cannot be inserted, the winding of the trim scraps Ws cannot be performed, and ultimately, this may result in the steel sheet processing line being stopped. Therefore, in the conventional method, in order to ensure the winding shaft can be inserted, it is necessary to set the amount of trim scraps Ws taken into the baller chamber to the minimum necessary. As such, it is practically impossible to take in a large amount of trim scraps Ws into the baller chamber in the early stages of winding. As a result, only a small amount of trim scraps Ws can be wound onto one ball B, resulting in the formation of multiple balls B with low density.

[0060] In contrast, in the winding method described above, when the sensor 40 detects that the trim scraps Ws have reached a predetermined set height Ht corresponding to the winding spindle 22, a step is performed in which the tip 22a of the winding spindle 22 is moved to the insertion position P2. In this case, the detection by the sensor 40 makes it possible to take in an amount of trim scraps Ws at the start of winding by the winding spindle 22 that allows for smooth insertion of the winding spindle 22. This makes it possible to stably form high-density balls B. As a result, the number of times balls B are dispensed can be reduced, which is useful for improving processing efficiency.

[0061] The winding method may further include a stopping step of stopping the operation of the pusher 18 in the introducing step when the sensor 40 detects that the trim scraps Ws have reached the set height Ht, and another introducing step of restarting the operation of the pusher 18 after the inserting step and before the winding step to introduce additional trim scraps Ws into the area. In this case, the operation of the pusher 18 in the introducing step is stopped when the trim scraps Ws have reached the set height Ht, and the winding spindle 22 is inserted. This reduces the possibility that the winding spindle 22 cannot be inserted due to the presence of a large amount of trim scraps Ws. On the other hand, after the insertion of the winding spindle 22, additional trim scraps Ws are introduced by another introducing step, so that more trim scraps Ws are taken in at the start of winding. As a result, both more reliable insertion of the winding spindle 22 and formation of a high-density ball B are achieved, thereby improving processing efficiency. For example, with the trend toward high tensile strength steel sheets (ultra-high tensile strength steel sheets), the production of steel sheets that are resistant to bending is increasing, and the density of balls B tends to become lower. The above-mentioned winding method is even more useful when steel sheets that are resistant to bending (high tensile strength steel sheets) are produced.

[0062] The winding facility 1 described above includes a winding device 10 and a control device 50 that controls the winding device 10. The winding device 10 includes a winding shaft 22 that winds up trim scraps Ws of the steel sheet Wb, an axial drive unit 24 that moves the winding shaft 22 along the axial direction, a rotation drive unit 26 that rotates the winding shaft 22, a sensor 40 that can detect when the trim scraps Ws have reached a predetermined set height Ht corresponding to the winding shaft 22 in an area (baller chamber 21b) where the trim scraps Ws are wound by the winding shaft 22, and a pusher 18 that pushes in the trim scraps Ws. The control device 50 is configured to execute the following steps: an introduction step in which the pusher 18 introduces the trim scraps Ws into the above-mentioned area; an insertion step in which, when the sensor 40 detects that the trim scraps Ws have reached the set height Ht, the axial drive unit 24 moves the tip end 22a of the winding spindle 22 to the insertion position P2; and a winding step in which the rotation drive unit 26 rotates the winding spindle 22 with the tip end 22a positioned at the insertion position P2, thereby winding the trim scraps Ws within the above-mentioned area. As with the above-mentioned winding method, this winding equipment 1 can stably form high-density balls B, thereby reducing the number of times the balls B are dispensed. Therefore, the winding equipment 1 is useful for improving processing efficiency.

[0063] [Second embodiment] Next, a trim scrap winding equipment according to a second embodiment will be described with reference to FIGS. 9 to 11. The winding equipment 1 according to the second embodiment is configured similarly to the winding equipment 1 according to the first embodiment. In the winding equipment 1 according to the second embodiment, the processing content executed by the control device 50 differs from the processing content according to the first embodiment. In the series of processing according to the first embodiment, the amount of trim scraps Ws in the surrounding area is adjusted by moving the pusher 18, but in the series of processing according to the second embodiment, the amount of trim scraps Ws in the surrounding area is adjusted by raising and lowering the table 30.

[0064] As described above, the table 30 can be raised and lowered below the winding shaft 22. With the table 30, the table driving unit 36 ​​can rotate the first table unit 32 about a horizontal axis passing through the base end of the first table unit 32, while maintaining a constant attitude of the second table unit 34 relative to the first table unit 32. In this case, most of the table 30, excluding the base end of the first table unit 32, moves up and down as the table 30 rotates about the axis. Here, within the range in which the table 30 can be rotated about the axis, the position at which the most part of the table 30 (the base end of the second table unit 34) is lowest is referred to as the "lower limit," and the position at which the most part of the table 30 (the base end of the second table unit 34) is highest is referred to as the "upper limit."

[0065] The winding process described above may be performed at a predetermined height H1 (see FIG. 1) that is equal to or lower than the upper limit and higher than the lower limit. Height H1 (height position) may coincide with the upper limit. The control device 50 performs a process (introduction process) of introducing the trim scraps Ws onto the table 30, with the table 30 being located at height H2 (see FIG. 10) below the winding shaft 22 and capable of being raised and lowered between height H1 and height H2 that is lower than height H1. Height H2 is lower than height H1 and higher than the lower limit. Height H2 (height position) may coincide with the lower limit.

[0066] The control device 50 may control the table driving unit 36 ​​so that the angle formed between the upper surface of the first table portion 32 and the upper surface of the second table portion 34 is maintained at an angle smaller than 180° before introduction by the pusher 18. Then, the control device 50 may introduce (supply) the trim scraps Ws onto the table 30 in the baller chamber 21b by causing the pusher driving unit 19 to advance the pusher 18.

[0067] After the trim scraps Ws are introduced by the pusher 18, the introduction control unit 54 of the control device 50 executes a step (first raising step) of raising the table 30 from height H2 using the table driving unit 36. For example, the introduction control unit 54 raises the table 30 by rotating the first table unit 32 using the table driving unit 36 ​​about an axis related to the first table unit 32. As the table 30 rises, the trim scraps Ws on the table 30 are brought closer to the periphery at a height corresponding to the winding shaft 22 (the above-mentioned surrounding area) in the baller chamber 21b.

[0068] When the sensor 40 detects that the trim scraps Ws on the table 30 have reached the set height Ht, the introduction control unit 54 may execute a step (stopping step) of causing the table driving unit 36 ​​to stop the lifting of the table 30. After the lifting of the table 30 has stopped, the shaft insertion control unit 58 controls the axial driving unit 24 so that the tip end 22a of the winding shaft 22 moves from the standby position P1 to the insertion position P2.

[0069] After the leading end 22a is positioned at the insertion position P2, the introduction control unit 54 may execute a step of raising the table 30 by the table drive unit 36 ​​(raising step). If the above step of stopping the raising of the table 30 has been performed, the introduction control unit 54 may execute a step of restarting the raising of the table 30 and further raising the table 30 (second raising step). The introduction control unit 54 introduces the trim scraps Ws so that they approach the periphery of the winding spindle 22, for example, by positioning the table 30 at height H1. In one example, the introduction control unit 54 rotates the first table unit 32 by the table drive unit 36 ​​about an axis related to the first table unit 32, thereby further raising the table 30 from the height position at which the first raising of the table 30 ended. As the table 30 rises after the winding spindle 22 is inserted, the trim scraps Ws are pushed toward the periphery of the winding spindle 22 in the baller chamber 21b so that they approach the winding spindle 22.

[0070] 9 is a flowchart showing a series of processes executed by the control device 50 according to the second embodiment. Similar to the series of processes according to the first embodiment, the series of processes is executed in parallel with the continuation of side trimming by the side trimmer 92. In the initial state, the pusher 18 is disposed in the standby position, and the tip portion 22a of the winding shaft 22 is disposed in the standby position P1.

[0071] First, the control device 50 executes step S41. In step S41, for example, the introduction control unit 54 controls the table driving unit 36 ​​to position the table 30 at height H2 (for example, the lower limit). As a result, a space with a larger capacity is formed above the table 30 in the boring chamber 21b compared to when the table 30 is positioned at height H1. Next, the control device 50 executes step S42, similar to step S11 in the series of processes shown in FIG. 5.

[0072] Next, the control device 50 executes step S43. In step S43, for example, the introduction control unit 54 causes the pusher 18, which is placed in the standby position, to move to a target position (for example, a target position set so that the tip of the pusher 18 is positioned in the baller chamber 21b) by the pusher drive unit 19, as shown in Fig. 10. This performs a process of introducing (supplying) the trim scraps Ws onto the table 30, which is located at height H2.

[0073] Next, the control device 50 executes step S44. In step S44, for example, the introduction control unit 54 controls the table driving unit 36 ​​to start raising the table 30, which is positioned at height H2, as shown in FIG. 11(a). By executing step S44, the trim scraps Ws piled up on the table 30 start to approach the set height Ht corresponding to the winding spindle 22.

[0074] Next, the control device 50 executes step S45. In step S45, for example, the introduction control unit 54 waits until the sensor 40 detects that the trim scraps Ws have reached the set height Ht, similar to step S13 described above. The table 30 continues to rise until the sensor 40 detects that the trim scraps Ws have reached the set height Ht (for example, the set height Ht at the insertion position P2). As in steps S44 and S45, a process of raising the table 30 is performed until the sensor 40 detects that the trim scraps Ws have reached the set height Ht.

[0075] Next, the control device 50 executes step S46. In step S46, for example, the introduction control unit 54 controls the table driving unit 36 ​​to stop raising the table 30. As a result, when the trim scraps Ws reach the set height Ht, the operation of bringing the trim scraps Ws on the table 30 closer to the area corresponding to the winding shaft 22 (the surrounding area) is interrupted. The table 30 stops between heights H1 and H2 in the vertical direction.

[0076] Next, the control device 50 executes step S47. In step S47, for example, the shaft insertion control unit 58 causes the axial drive unit 24 to move the winding shaft 22 so that the tip end 22a is positioned at the insertion position P2, similar to step S15 described above. As in steps S45 to S47 above, when the sensor 40 detects that the trim scraps Ws have reached the set height Ht, a step of stopping the lifting of the table 30 is performed, and a step of moving the tip end 22a of the winding shaft 22 to the insertion position P2 is performed.

[0077] Next, the control device 50 executes step S48. In step S48, for example, the shaft insertion control unit 58 controls the table drive unit 36 ​​to resume the lifting of the table 30 and raise the table 30 to height H1, as shown in FIG. 11(b). As a result, the trim scraps Ws are pushed by the table 30 around the winding spindle 22 so that the leading end 22a approaches the winding spindle 22 inserted at insertion position P2. As in step S48 above, after the winding spindle 22 is inserted, a step of lifting the table 30 (a step of further lifting the table 30) is performed.

[0078] Next, the control device 50 executes steps S49 and S50, similar to steps S19 and S20 described above. In step S19, the winding control unit 62 rotates the winding spindle 22 by the rotation drive unit 26 with the table 30 positioned at height H1. In the above series of processes, the introduction of the trim scraps Ws into the baller chamber 21b (above the table 30), the first lifting of the table 30, the insertion of the winding spindle 22, and the second lifting of the table 30 are executed in this order, and then winding by the winding spindle 22 and dispensing of the ball B are executed.

[0079] In the series of processes exemplified above, the amount of trim scraps Ws in the peripheral region, which is a virtual region centered on the central axis of the winding shaft 22 and having a diameter twice the maximum diameter of the winding shaft 22 above and below, changes as follows. As the table 30 rises from height H2, the trim scraps Ws accumulated on the table 30 approach the set height Ht, so the amount of trim scraps Ws in the peripheral region increases during the first rise of the table 30. Furthermore, during the second rise of the table 30, the table 30 rises to height H1, so the amount of trim scraps Ws in the peripheral region further increases from the point at which the first rise of the table 30 ended. Even if the table 30 has a configuration other than a two-stage table, the control device 50 may execute control similar to the series of processes described above.

[0080] The winding facility 1 and the winding method according to the second embodiment described above also achieve the same effects as those of the first embodiment.

[0081] In the introduction step performed in the above winding method, the trim scraps Ws may be introduced onto a table 30 that can be raised and lowered below the winding spindle 22. The above winding method may further include a lifting step of lifting the table 30 after the insertion step and before the winding step. In this case, after the winding spindle 22 is inserted, the table 30 that supports the trim scraps Ws is moved closer to the winding spindle 22, so that a large amount of trim scraps Ws is taken in around the winding spindle 22 at the start of winding. As a result, it is possible to form a high-density ball B.

[0082] The winding method may further include a first raising step of raising the table 30 after the introducing step, a stopping step of stopping the raising of the table 30 in the first raising step when the sensor 40 detects that the trim scraps Ws have reached the set height Ht, and a second raising step of further raising the table 30 after the inserting step and before the winding step. In this case, the winding spindle 22 is inserted after the trim scraps Ws have reached the set height Ht due to the raising of the table 30 in the first raising step, thereby reducing the possibility that the winding spindle 22 cannot be inserted due to the presence of a large amount of trim scraps Ws. On the other hand, after the winding spindle 22 is inserted, the table 30 is raised in the second raising step, bringing the trim scraps Ws closer to the winding spindle 22, so that a large amount of trim scraps Ws is taken in around the winding spindle 22 at the start of winding. This achieves both more reliable insertion of the winding spindle 22 and formation of high-density balls B, thereby improving processing efficiency.

[0083] The first and second embodiments of the present disclosure have been described above. However, various modifications may be made to the above embodiments without departing from the scope and spirit of the claims. Some of the features described in the first embodiment may be applied to the second embodiment, and some of the features described in the second embodiment may be applied to the first embodiment. For example, the trim scraps Ws may be introduced into the baller chamber 21b by the pusher 18 until the trim scraps Ws accumulated on the table 30 reach the set height Ht as detected by the sensor 40. After the winding shaft 22 is inserted, a step of raising the table 30 (raising step) may be performed.

[0084] In the above example, the leading end 22a of the winding spindle 22 moves from the standby position P1 to the insertion position P2 during the insertion of the winding spindle 22. However, the method of insertion to the insertion position P2 is not limited to this example. The control device 50 may move the leading end 22a to a predetermined intermediate position set between the insertion position P2 and the standby position P1 before the pusher 18 introduces the trim scraps Ws for the first time or before the table 30 is raised for the first time. In one example, the intermediate position may be set so that the portion of the winding spindle 22 located between the guide plates 23a and 23b is 30% to 90%, 40% to 85%, or 50% to 80% of the portion of the winding spindle 22 located at the insertion position P2. In this case, the detection position of the sensor 40 may be set between the intermediate position and the insertion position P2 or at the insertion position P2. In this example, when the tip 22a of the winding shaft 22 is moved to the insertion position P2, the amount of trim waste Ws existing between the position before the movement and the insertion position P2 can be reduced compared to when the winding shaft 22 is moved from the standby position P1. As a result, it is possible to further reduce the possibility that the winding shaft 22 cannot be inserted.

[0085] In the winding method according to the first embodiment, the position (initial position) of the table 30 may be changed in the preparation stage for winding and at the start of winding. For example, the initial position of the table 30 may be changed depending on the amount of trim scraps Ws that is desired to be processed in one go.

[0086] The series of processes shown in Figures 5 and 9 are examples and can be modified as appropriate. In the series of processes described above, the control device 50 may execute one step and the next step in parallel, or may execute the steps in an order different from that of the example described above. The control device 50 may execute steps with content different from that of the example described above. [Explanation of symbols]

[0087] 1...trim scrap winding equipment, Wb...steel plate, Ws...trim scrap, 10...winding device, 18...pusher, 22...winding shaft, 22a...tip portion, P2...insertion position, 24...axial drive unit, 26...rotation drive unit, 30...table, 40...sensor, Ht...set height, 50...control device

Claims

1. an introducing step of introducing the trim scraps of the steel plate by a pusher into an area where the trim scraps are wound by a winding shaft; a stopping step of stopping the operation of the pusher in the introducing step when a sensor detects that the trim scraps introduced into the area have reached a predetermined set height corresponding to the winding spindle; an insertion step of moving a tip end of the winding spindle to an insertion position within the area when the sensor detects that the trim scraps introduced into the area have reached the set height; after the inserting step, another introducing step of introducing more of the trimmings into the area by restarting the operation of the pusher; a winding step of winding the trim scraps in the area by the winding shaft with the tip end portion disposed at the insertion position after the separate introducing step, the set height is set between the upper end and the lower end of the winding shaft, The trim scrap winding method, wherein the sensor is capable of detecting that the trim scrap introduced into the region has reached the set height at a predetermined position in the axial direction of the winding shaft.

2. In the introducing step, the trim scraps are introduced onto a table that is liftable and lowerable below the winding shaft, The winding method according to claim 1 , further comprising a raising step of raising the table after the inserting step and before the winding step.

3. An introduction step of introducing the trim scraps onto a table that can be raised and lowered below the winding shaft within an area where the steel plate trim scraps are wound by the winding shaft by moving a pusher to a target position; a first raising step of raising the table after the introducing step; a stopping step of stopping the lifting of the table in the first lifting step when a sensor detects that the trim scraps introduced onto the table have reached a predetermined set height corresponding to the winding spindle; an insertion step of moving a tip end of the winding spindle to an insertion position within the area when the sensor detects that the trim scraps introduced onto the table have reached the set height; a second raising step of further raising the table after the inserting step; a winding step of winding the trim scraps in the area by the winding shaft with the tip end portion disposed at the insertion position after the second lifting step, the set height is set between the upper end and the lower end of the winding shaft, The winding method, wherein the sensor is capable of detecting that the trim scraps introduced into the region have reached the set height at a predetermined position in the axial direction of the winding spindle.

4. a winding device including a winding shaft that winds up trim scraps of steel plate, a first drive unit that moves the winding shaft along its axial direction, a second drive unit that rotates the winding shaft, a sensor that can detect when the trim scraps reach a predetermined set height corresponding to the winding shaft within an area where the trim scraps are wound by the winding shaft, and a pusher that pushes in the trim scraps; a control device for controlling the winding device, The control device an introducing step of introducing the trimmings into the area by the pusher; a stopping step of stopping the operation of the pusher in the introducing step when the sensor detects that the trimmings introduced into the area have reached the set height; an insertion step of moving a tip end of the winding spindle to an insertion position within the area by the first drive unit when the sensor detects that the trim scraps introduced into the area have reached the set height; after the inserting step, another introducing step of introducing more of the trimmings into the area by restarting the operation of the pusher; a winding step of winding up the trim scraps in the area by rotating the winding shaft with the tip end portion disposed at the insertion position by the second drive unit after the separate introducing step, the set height is set between the upper end and the lower end of the winding shaft, The trim scrap winding equipment, wherein the sensor is capable of detecting that the trim scrap introduced into the area has reached the set height at a predetermined position in the axial direction of the winding shaft.

5. A winding device having a winding shaft for winding up steel plate trim scraps, a first drive unit for moving the winding shaft along the axial direction, a second drive unit for rotating the winding shaft, a sensor capable of detecting that the trim scraps have reached a predetermined set height corresponding to the winding shaft within an area where the trim scraps are wound by the winding shaft, a pusher for pushing in the trim scraps, and a table that can be raised and lowered below the winding shaft within the area; a control device for controlling the winding device, The control device an introducing step of introducing the trim scraps onto the table by moving the pusher to a target position; a first raising step of raising the table after the introducing step; a stopping step of stopping the lifting of the table in the first lifting step when the sensor detects that the trim chips introduced onto the table have reached the set height; an insertion step of moving a tip end of the winding spindle to an insertion position within the area by the first drive unit when the sensor detects that the trim scraps introduced onto the table have reached the set height; a second raising step of further raising the table after the inserting step; a winding step of winding up the trim scraps in the area by rotating the winding shaft with the tip end portion disposed at the insertion position by the second driving unit after the second lifting step, the set height is set between the upper end and the lower end of the winding shaft, The trim scrap winding equipment, wherein the sensor is capable of detecting that the trim scrap introduced into the area has reached the set height at a predetermined position in the axial direction of the winding shaft.

Images