Processing line system

Abstract

Provided is a machining line system comprising a plate material supply device capable of supplying a plate material so as to improve production efficiency. This machining line system 101 comprises: a machining device 102 which machines a plate material 100; a plate material feeding device 103 which intermittently conveys the plate material 106 to the machining device 102; and a plate material supply device 104 which supplies the plate material 106 from an uncoiler 105 to the plate material feeding device 103, wherein the plate material supply device 104 is configured to be capable of changing the speed of supplying the plate material 106 to the plate material feeding device 103 according to steps of the machining device 102 for the plate material 106.

Description

Technical Field

[0001] The present invention relates to a processing line system including a plate supply device capable of supplying a plate material to a plate feed device that intermittently conveys the plate material to a processing device so as to improve production efficiency.

Background Art

[0002] When a plate feed device conveys a plate material such as a coil material to a processing device such as a press device, the conveying operation by the plate feed device is intermittently performed so as to repeat the advancement and stop of the plate material in accordance with the processing in the processing device. The inertial force generated by the advancement and stop of the plate material acts on the plate material, causing the plate material to vibrate or a wavy phenomenon called fluttering to occur. When such fluttering occurs, not only is an excessive load applied to the plate feed device, but the plate material also bends or gets scratched. Therefore, it is necessary to provide a buffer section called a looper. As a method for alleviating the fluttering of the plate material, there is a plate supply device provided with a looper such as a U-shape or an S-shape as a buffer section. Although the fluttering is reduced compared to the case where a looper such as a U-shape or an S-shape is not provided, fluttering occurs when the plate material is conveyed at high speed, and the plate material cannot be conveyed at a higher speed. There is a problem that the processing capacity cannot be fully exhibited under the requirement of speeding up the processing.

[0003] Patent Document 1 discloses a coil material supply device that is disposed near a sheet material feeding device of a press device and includes a pair of feeding rolls provided with a servo motor for feeding a coil material while forming a loop, a position sensor for detecting the loop amount of the coil material, and a control device for controlling the servo motor according to a signal from the position sensor to control the feeding amount of the coil material by the feeding rolls. Patent Document 2 discloses a coil material supply device that includes a coil material supply section, a position sensor provided downstream of the coil material supply section for detecting the loop amount of the coil material, a control device for controlling the servo motor according to a signal from the position sensor to control the feeding amount of the coil material by the feeding rolls, and a stand for holding the coil material supply section in a state where the mounting angle can be adjusted so that the supply angle of the material can be adjusted according to the conditions. Patent Document 3 discloses a coil material supply device that has a leveler section for correcting and feeding out a coil material, an outlet guide section provided at a portion where a loop of the coil material is formed at the outlet of the leveler section, and an upper guide section provided at a portion where the loop of the coil material is formed, one end of which is provided at the outlet of the leveler section and the other end of which is provided at a horizontal transfer section of the loop, and a sensor is provided at the portion where the loop is formed to optimally control the swelling of the loop.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0005] In a processing line system equipped with a processing device such as a press device, even when using a coil material supply device as described in Patent Documents 1 to 3 as a plate material supply device for supplying a plate material to a plate material feeding device, when the plate material feeding device intermittently conveys the plate material to the processing device at high speed, inertial forces generated due to the advancement and stop of the plate material cause the plate material to vibrate, and furthermore, it is likely to cause rattling, resulting in a problem that the production efficiency of the processing line system cannot be improved.

[0006] Therefore, an object of the present invention is to, in order to solve the above problems, mitigate the influence of inertial forces generated due to the advancement and stop of the plate material by the plate material feeding device, further suppress the occurrence of rattling, and provide a processing line system equipped with a plate material supply device capable of supplying the plate material to the plate material feeding device so as to improve production efficiency.

Means for Solving the Problem

[0007] According to one aspect of the present invention, a processing line system includes a processing device for processing a plate material, a plate material feeding device for intermittently conveying the plate material to the processing device, and a plate material supply device for supplying the plate material from an uncoiler to the plate material feeding device, and the plate material supply device is capable of changing the speed at which the plate material is supplied to the plate material feeding device according to the process for the plate material in the processing device.

[0008] According to a specific example of the present invention, in the processing line system, the process of the processing device includes a process of moving the plate material and a process of performing a processing treatment on the plate material, and the speed at which the plate material supply device supplies the plate material in the process of moving is faster than the speed at which the plate material supply device supplies the plate material in the process of performing the processing treatment.

[0009] According to a specific example of the present invention, in the processing line system, the plate material supply device is capable of changing the speed at which the plate material is supplied to the plate material feeding device according to the speed at which the plate material feeding device conveys the plate material to the processing device.

[0010] According to a specific example of the present invention, in a processing line system, a sheet material supply device is configured to increase the speed at which the sheet material is supplied to a sheet material feeding device at the start of conveyance of the sheet material by the sheet material feeding device, and decrease the speed at which the sheet material is supplied to the sheet material feeding device at the stop of conveyance of the sheet material by the sheet material feeding device.

[0011] According to a specific example of the present invention, in a processing line system, a sheet material supply device is configured to change the speed at which the sheet material is supplied to the sheet material feeding device such that the amount of the sheet material supplied from the sheet material supply device to the sheet material feeding device during one cycle of the process of the processing device is substantially the same as the amount of the sheet material conveyed from the sheet material feeding device to the processing device.

[0012] According to a specific example of the present invention, in a processing line system, a sheet material supply device constantly supplies the sheet material to the sheet material feeding device.

[0013] According to a specific example of the present invention, in a processing line system, when the sheet material feeding device is not conveying the sheet material to the processing device, the sheet material supply device supplies the sheet material to the sheet material feeding device.

[0014] According to a specific example of the present invention, in a processing line system, the speed at which the sheet material supply device supplies the sheet material to the sheet material feeding device is different from the speed at which the sheet material feeding device conveys the sheet material to the processing device.

[0015] According to a specific example of the present invention, in a processing line system, the processing device is provided with a sensor for detecting the process of the processing device, and according to the output signal from the sensor, the sheet material feeding device is configured to intermittently convey the sheet material to the processing device.

[0016] According to a specific example of the present invention, in a processing line system, according to the output signal from the sensor, the sheet material supply device is configured to change the speed at which the sheet material is supplied to the sheet material feeding device.

Advantages of the Invention

[0017] According to the present invention, the processing line system can process sheet materials at high speed and improve production efficiency.

[0018] In addition, other objects, features, and advantages of the present invention will become apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2A

Figure 2B

Embodiments for Carrying Out the Invention

[0020] Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments.

[0021] Referring to FIG. 1, a processing line system 101 as an embodiment of the present invention will be described. As shown in FIG. 1, the processing line system 101 includes a processing device 102 such as a press device that processes a plate material 106 such as a coil material through a processing process such as press working, a plate material feeding device (feeder) 103 that intermittently conveys the plate material 106 to the processing device 102, and a plate material supply device (stock controller) 104 that supplies the plate material 106 from the uncoiler 105 to the plate material feeding device 103. Further, the processing line system 101 includes a control device 107 for controlling the processing device 102, the plate material feeding device 103, and the plate material supply device 104. The plate material feeding device 103 may include a pair of rolls, a motor that rotationally drives at least one of the pair of rolls, and a control device that controls the motor. The control device of the plate material feeding device 103 may control the intermittent conveyance of the plate material 106 to the processing device 102 by causing the pair of rolls to grip the plate material 106 or separating the pair of rolls to release the plate material 106. However, the plate material feeding device 103 is not limited thereto. The plate material supply device 104 corrects and flattens the plate material 106 taken out from the uncoiler 105, and may include two or more rolls for gripping and conveying the plate material 106, a motor that rotationally drives at least one of the two or more rolls, and a control device that controls the motor to control the supply amount of the plate material 106 by the two or more rolls to the plate material feeding device 103. The two or more rolls may be coupled by a coupling device such as a timing belt or a gear. However, the plate material supply device 104 is not limited thereto. Note that the control device of the plate material feeding device 103 and the control device of the plate material supply device 104 may be incorporated in the control device 107.

[0022] Between the sheet supply device 104 and the sheet feeding device 103, there is provided a space 108 that can hold the sheet 106 in accordance with the intermittent conveyance of the sheet feeding device 103 to the processing device 102. The space 108 serves as a play space for the sheet 106. When the sheet supply device 104 supplies the sheet 106 to the sheet feeding device 103, the sheet 106 is conveyed so as to form a loop as shown in FIG. 1 in the space 108. The conveyance operation of the sheet 106 by the sheet feeding device 103 is intermittently performed so as to repeat the advancement and stop of the sheet 106 in accordance with the processing in the processing device 102. When the sheet feeding device 103 stops the conveyance of the sheet 106 to the processing device 102 while the sheet supply device 104 continues to supply the sheet 106 to the sheet feeding device 103, the sheet 106 stays in the space 108, and the loop formed by the sheet 106 gradually moves toward the left in the space 108 shown in FIG. 1 according to the stop time of the conveyance of the sheet by the sheet feeding device 103. When the sheet feeding device 103 resumes the conveyance of the sheet 106 to the processing device 102, the loop formed by the sheet 106 gradually moves toward the right in the space 108 shown in FIG. 1. By providing the space 108 in this way, the amount of the sheet conveyed to the processing device 102 by the sheet feeding device 103 can be adjusted. However, in a loop without a guide for guiding the sheet 106, the inertial force generated due to the advancement and stop of the sheet 106 by the sheet feeding device 103 vibrates the sheet 106 and is more likely to cause fluttering.

[0023] The sheet supply device 104 can change the speed at which the sheet 106 is supplied to the sheet feeding device 103 according to the process for the sheet 106 in the processing device 102. The processes in the processing device 102 include a process of moving the sheet 106 by the sheet feeding device 103 according to the target length and a process of performing a processing operation on the moved sheet 106. The sheet supply device 104 can change the speed at which the sheet 106 is supplied to the sheet feeding device 103 when switching from the process of moving the sheet 106 to the process of performing a processing operation on the sheet 106, and when switching from the process of performing a processing operation on the sheet 106 to the process of moving the sheet 106. For example, when the processing device 102 is a press device, the press device may include a crankshaft 109, an upper die 111, a lower die 112, a motor for rotationally driving the crankshaft 109, and a control device for controlling the motor. After the process of moving the sheet 106, in the process of performing a pressing operation on the sheet 106, the control device of the press device controls the motor to rotationally drive the crankshaft 109 provided with an eccentric cam or the like, so that the upper die 111 engaged with the eccentric cam or the like is moved vertically upward and downward, and the moved sheet 106 may be pressed by the cooperation of the upper die 111 and the lower die 112. Then, after the process of performing a pressing operation on the sheet 106, the sheet 106 may be moved again by the sheet feeding device 103 according to the target length. However, the processing device 102 is not limited to this. The control device of the processing device 102 may be built in the control device 107. The control device of the sheet supply device 104 changes the rotational speed of the output shaft of the motor when switching from the process of moving the sheet 106 to the process of performing a pressing operation on the sheet 106, and when switching from the process of performing a pressing operation on the sheet 106 to the process of moving the sheet 106. Along with the change in the rotational speed of the output shaft of the motor, the rotational speeds of two or more rolls that grip the sheet 106 are changed, so that the speed at which the sheet 106 is supplied to the sheet feeding device 103 can be changed.

[0024] The sheet supply device 104 can supply the sheet 106 to the sheet feeding device 103 at a speed faster than the speed at which the sheet 106 is supplied to the sheet feeding device 103 in the process of moving the sheet 106. FIG. 2A shows an example of the operating relationship among the processing device 102, the sheet feeding device 103, and the sheet supply device 104 in one cycle of the process of the processing device 102. In particular, when the processing device 102 is a press device, an example of the operating relationship is shown when mold A is used as an example of the upper mold 111 and the lower mold 112. The angle (°) displayed in FIG. 2A represents the rotation angle of the crankshaft 109, and the time when the crankshaft 109 rotates from 270° through 0° to 90° represents the process of moving the sheet 106 by the sheet feeding device 103 according to the target length. And the time when the crankshaft 109 rotates from 90° through 180° to 270° represents the state in which the conveyance of the sheet 106 to the processing device 102 by the sheet feeding device 103 is stopped, and the time when the crankshaft 109 rotates around 180° represents the process of processing the moved sheet 106. Also, when the crankshaft 109 rotates from 270° through 0° to 90°, that is, in the case of the process of moving the sheet 106 by the sheet feeding device 103, the sheet supply device 104 supplies the sheet 106 to the sheet feeding device 103 at a constant first speed. And when the crankshaft 109 rotates from 90° through 180° to 270°, that is, in the case including the process of processing the sheet 106, the sheet supply device 104 supplies the sheet 106 to the sheet feeding device 103 at a constant second speed. Since the first speed corresponds to the speed of the process of moving the sheet 106 by the sheet feeding device 103, it is made faster than the second speed.

[0025] Figure 2B shows another example of the operational relationship among the processing device 102, the sheet feeding device 103, and the sheet supply device 104 in one cycle of the process of the processing device 102. In particular, when the processing device 102 is a press device, it shows another example of the operational relationship when using die B as another example of the upper die 111 and the lower die 112, which is different from die A. The angle (°) shown in Figure 2B represents the rotation angle of the crankshaft 109. The time when the crankshaft 109 rotates from 240° through 0° to 120° represents the process of moving the sheet 106 by the sheet feeding device 103 according to the target length. And the time when the crankshaft 109 rotates from 120° through 180° to 240° represents the state where the conveyance of the sheet 106 to the processing device 102 by the sheet feeding device 103 is stopped. The time when the crankshaft 109 rotates around 180° represents the process of performing a processing operation on the moved sheet 106. Comparing Figure 2A and Figure 2B, the rotation angle of the crankshaft 109 during the process of moving the sheet 106 by the sheet feeding device 103 is 180° in Figure 2A, while it is 240° in Figure 2B. If the conveyance amount of the sheet 106 by the sheet feeding device 103 per unit time is the same, the sheet feeding device 103 can convey a larger amount of the sheet 106 in Figure 2B compared to Figure 2A. Also, if the rotation angle of the crankshaft 109 during the process of moving the sheet 106 by the sheet feeding device 103 is set to 120°, the sheet feeding device 103 can convey a smaller amount of the sheet 106 compared to Figure 2A. Thus, the conveyance amount of the sheet 106 by the sheet feeding device 103 to the processing device 102 can be adjusted according to the rotation angle of the crankshaft 109 so as to match the die used in the press device.

[0026] Note that the crankshaft 109 may rotate either fast or slow according to the rotation angle. For example, in FIG. 2A, when the crankshaft 109 rotates from 270° through 0° to 90°, it may rotate fast to shorten the time for transporting the plate material 106 to the processing device 102 and reduce the amount of the plate material 106 transported to the processing device 102. Also, when the crankshaft 109 rotates from 270° through 0° to 90°, it may rotate slow to lengthen the time for transporting the plate material 106 to the processing device 102 and increase the amount of the plate material 106 transported to the processing device 102.

[0027] The plate material supply device 104 can change the speed at which it supplies the plate material 106 to the plate material feeding device 103 according to the speed at which the plate material feeding device 103 transports the plate material 106 to the processing device 102. Since the conveying operation of the plate material 106 by the plate material feeding device 103 is intermittently performed so as to repeat the advancement and stop of the plate material 106 in accordance with the processing in the processing device 102, when the plate material feeding device 103 stops transporting the plate material 106 to the processing device 102, if the plate material supply device 104 continues to supply the plate material at the same speed as when the plate material feeding device 103 transports the plate material 106 to the processing device 102, the inertial force generated due to the advancement and stop of the plate material 106 by the plate material feeding device 103 may cause rattling. Therefore, the plate material supply device 104 may change the speed at which it supplies the plate material 106 to the plate material feeding device 103 so as to be synchronized with the speed at which the plate material feeding device 103 transports the plate material 106 to the processing device 102. As shown in FIGS. 2A and 2B, when the plate material feeding device 103 stops transporting the plate material 106 to the processing device 102, the plate material supply device 104 may reduce the speed at which it supplies the plate material 106 to the plate material feeding device 103 and reduce the amount of the plate material 106 supplied to the plate material feeding device 103 as compared with the case where the plate material feeding device 103 transports the plate material 106 to the processing device 102. Thereby, the amount of the plate material 106 staying in the space 108 can be adjusted to suppress the occurrence of rattling.

[0028] As shown in FIGS. 2A and 2B, when the sheet feeding device 103 stops transporting the sheet 106 to the processing device 102, the sheet supply device 104 may change its speed so as to slow down the speed at which the sheet 106 is supplied to the sheet feeding device 103. And when the sheet feeding device 103 resumes transporting the sheet 106 to the processing device 102, the sheet supply device 104 may change its speed so as to increase the speed at which the sheet 106 is supplied to the sheet feeding device 103. Also, during one cycle of the process of the processing device 102, the sheet supply device 104 may change the speed at which the sheet 106 is supplied to the sheet feeding device 103 so that the supply amount of the sheet 106 from the sheet supply device 104 to the sheet feeding device 103 is substantially the same as the amount of the sheet 106 transported from the sheet feeding device 103 to the processing device 102. Thereby, the amount of the sheet 106 staying in the space 108 can be adjusted, and the occurrence of fluttering can be further suppressed.

[0029] The sheet supply device 104 can supply the sheet 106 to the sheet feeding device 103 at an arbitrary speed. However, if the sheet supply device 104 is operated to intermittently supply the sheet 106 to the sheet feeding device 103 in the same manner as the sheet feeding device 103, fluttering may occur between the sheet supply device 104 and the uncoiler 105. To suppress the occurrence of this fluttering, the sheet supply device 104 may constantly supply the sheet 106 to the sheet feeding device 103, and even when the sheet feeding device 103 is not transporting the sheet 106 to the processing device 102, the sheet supply device 104 may supply the sheet 106 to the sheet feeding device 103.

[0030] As shown in FIGS. 2A and 2B, the speed at which the sheet supply device 104 supplies the sheet 106 to the sheet feeding device 103 does not have to be the same as the speed at which the sheet feeding device 103 transports the sheet 106 to the processing device 102, and may be different regardless of the process of the processing device 102. According to conditions such as the material, thickness, and transport length of the sheet 106, the supply speed of the sheet 106 by the sheet supply device 104 and the transport speed of the sheet 106 by the sheet feeding device 103 may be set so as to suppress the occurrence of fluttering.

[0031] The processing device 102 may be provided with a sensor for detecting the processes of the processing device 102. For example, when the processing device 102 is a press device, an angle detector 110 such as an encoder for detecting the rotation angle of the crankshaft 109 may be provided as the sensor. The rotation angle of the crankshaft 109 as shown in FIGS. 2A and 2B is detected by the angle detector 110. Then, the output signal of the rotation angle detected by the angle detector 110 is transmitted to the control device 107. Thereby, the control device 107 can recognize the processes of the processing device 102. For example, as shown in FIG. 2A, when the rotation angle of the crankshaft 109 is between 270° through 0° to 90°, the control device 107 can recognize that it is a process of moving the plate material 106 by the plate material feeding device 103 according to the target length. And when the rotation angle of the crankshaft 109 is around 180°, the control device 107 can recognize that it is a process of performing a processing operation on the moved plate material 106. When the control device 107 recognizes that the rotation angle of the crankshaft 109 is 90°, it stops the conveyance of the plate material 106 to the processing device 102 by the plate material feeding device 103. And when the control device 107 recognizes that the rotation angle of the crankshaft 109 is 270°, it causes the plate material feeding device 103 to start the conveyance of the plate material 106 to the processing device 102 again and conveys the plate material 106 to the processing device 102 at a constant speed. In this way, the control device 107 can intermittently convey the plate material 106 to the processing device 102 with respect to the plate material feeding device 103 according to the output signal from the angle detector 110.

[0032] When the control device 107 recognizes that the rotation angle of the crankshaft 109 is between 270° through 0° to 90°, that is, when it is in the process of moving the plate material 106 by the plate material feeding device 103 according to the target length, the control device 107 causes the plate material supply device 104 to supply the plate material 106 to the plate material feeding device 103 at a first speed. And when the control device 107 recognizes that the rotation angle of the crankshaft 109 is between 90° through 180° to 270°, that is, when it includes the process of processing the plate material 106, the control device 107 causes the plate material supply device 104 to supply the plate material 106 to the plate material feeding device 103 at a second speed. When the control device 107 recognizes that the rotation angle of the crankshaft 109 is 90°, the control device 107 causes the plate material supply device 104 to change the speed of supplying the plate material 106 to the plate material feeding device 103 from the first speed to the second speed. And when the control device 107 recognizes that the rotation angle of the crankshaft 109 is 270°, the control device 107 causes the plate material supply device 104 to change the speed of supplying the plate material 106 to the plate material feeding device 103 from the second speed to the first speed. In this way, the control device 107 can change the speed of supplying the plate material 106 to the plate material feeding device 103 for the plate material supply device 104 according to the output signal from the angle detector 110.

[0033] The processing line system 101 may include a lower limit sensor 113 that detects the lower limit of the loop of the plate material 106 formed in the space 108, a lower side sensor 114 that detects the lower side of the loop of the plate material 106, an upper side sensor 115 that detects the upper side of the loop of the plate material 106, and an upper limit sensor 116 that detects the upper limit of the loop of the plate material 106. The control device 107 can recognize the state of the loop of the plate material 106 according to the output signals from the respective sensors 113 to 116, and can change the operating state, such as stopping the operations of the processing device 102, the plate material feeding device 103, and the plate material supply device 104, according to the state of the loop of the plate material 106, thereby suppressing the occurrence of fluttering.

[0034] By using the processing line system 101 of the present invention as described above, the sheet material supply device 104 alleviates the influence of the inertial force generated due to the advancement and stop of the sheet material 106 by the sheet material feeding device 103, and intermittently conveys the sheet material 106 to the sheet material feeding device 103 for the processing device 102 such as a press device. The generation of rattling is suppressed, the vibration of the sheet material 106 is suppressed, and the sheet material 106 can be supplied in response to the high-speed processing of processing such as press working. Then, the processing device 102 such as a press device performs a processing such as press working on the sheet material 106 intermittently conveyed with high precision, and can manufacture small parts used in information-related devices such as mobile phones and personal computers, components such as those of automobiles, industrial motor parts, and home appliances, and other structures.

[0035] The above description has been made for specific embodiments, but it is obvious to those skilled in the art that the present invention is not limited thereto, and various changes and modifications can be made within the scope of the principle of the present invention and the scope of the appended claims.

Explanation of Reference Numerals

[0036] 101 Processing line system 102 Processing device 103 Sheet material feeding device 104 Sheet material supply device 105 Uncoiler 106 Sheet material 107 Control device 108 Space 109 Crankshaft 110 Angle detector 111 Upper die 112 Lower die 113 Lower limit sensor 114 Lower side sensor 115 Upper side sensor 116 Upper limit sensor

Claims

1. A processing device for processing a sheet material, a sheet feeding device for intermittently feeding the sheet material to the processing device, a sheet supply device for supplying the sheet material from an uncoiler to the sheet feeding device, and a control device for controlling the processing device, the sheet feeding device, and the sheet supply device to form a processing line system, wherein the processing device includes a crankshaft and a mold for processing the sheet material, and the processing device has a first step of moving the sheet material within a first rotation angle range of a 0° to 360° rotation angle range of the crankshaft, and a second step of processing the sheet material within a second rotation angle range of the rotation angle range, the sheet supply device is capable of supplying the sheet material to the sheet feeding device at a first speed in the first step and supplying the sheet material to the sheet feeding device at a second speed in the second step, the first rotation angle range is determined according to the type of the mold, whereby the control device can adjust the conveyance amount of the sheet material supplied from the sheet supply device to the processing device by the sheet feeding device according to the type of the mold. A processing line system.

2. The processing line system according to Claim 1, wherein the first speed is faster than the second speed.

3. The processing line system according to Claim 1 or 2, wherein the sheet supply device can change the speed at which the sheet material is supplied to the sheet feeding device according to the speed at which the sheet feeding device conveys the sheet material to the processing device.

4. The processing line system according to any one of Claims 1 to 3, wherein the sheet supply device can increase the speed at which the sheet material is supplied to the sheet feeding device at the start of conveyance of the sheet material by the sheet feeding device and decrease the speed at which the sheet material is supplied to the sheet feeding device at the stop of conveyance of the sheet material by the sheet feeding device.

5. The sheet supply device can change the speed at which the sheet is supplied to the sheet feeding device so that the amount of the sheet supplied from the sheet supply device to the sheet feeding device during one rotation of the crankshaft is substantially the same as the amount of the sheet conveyed from the sheet feeding device to the processing device. The processing line system according to any one of claims 1 to 4.

6. The sheet supply device constantly supplies the sheet to the sheet feeding device. The processing line system according to any one of claims 1 to 5.

7. When the sheet feeding device is not conveying the sheet to the processing device, the sheet supply device supplies the sheet to the sheet feeding device. The processing line system according to any one of claims 1 to 6.

8. The speed at which the sheet supply device supplies the sheet to the sheet feeding device is different from the speed at which the sheet feeding device conveys the sheet to the processing device. The processing line system according to any one of claims 1 to 7.

9. The processing device includes an angle detector for detecting the rotation angle of the crankshaft, and according to the output signal from the angle detector, the sheet feeding device can intermittently convey the sheet to the processing device. The processing line system according to any one of claims 1 to 8.

10. According to the output signal from the angle detector, the sheet supply device can change the speed at which the sheet is supplied to the sheet feeding device. The processing line system according to claim 9.

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