Insulating paper processing equipment

Abstract

To provide a technique that can reduce an unnecessary cutting part in the front and rear of a foil joint part.SOLUTION: An insulation paper processing device includes: a conveyance part that conveys an insulation paper having a foil joint part from an upstream side to a downstream side; a cutting part that cuts the insulation paper; a first sensor provided on the upstream side of the cutting part to detect the foil joint part; and a control unit that controls a conveyance speed which is the speed at which the insulation paper is conveyed from the conveyance part. The control unit slows down the conveyance speed when the first sensor detects the foil joint part.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to an insulating paper processing device. [Background technology]

[0002] As an apparatus for manufacturing and processing insulating paper, for example, as described in Patent Document 1, a technique for manufacturing and processing insulating paper by unwinding and cutting a roll of insulating paper is known. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-5422 Summary of the Invention [Problem to be solved by the invention]

[0004] In the process of manufacturing insulating paper into rolls of the desired length, pieces of insulating paper may be joined together with a seal or other means. The spliced portions where the insulating paper is joined are unnecessary for the product and must be removed. When a sensor detects a spliced portion and cuts it away, a predetermined extra width is cut to ensure the spliced portion is removed reliably. This can result in a reduced yield. [Means for solving the problem]

[0005] The present disclosure has been made to solve the above-mentioned problems, and can be realized in the following forms. According to one embodiment of the present disclosure, an insulating paper processing device includes a conveying unit that conveys the insulating paper having a spliced portion from an upstream side to a downstream side, a cutting unit that cuts the insulating paper, a first sensor that is provided upstream of the cutting unit and detects the spliced portion, a second sensor that is provided between the first sensor and the cutting unit and detects the spliced portion, and a control unit that controls a conveying speed at which the insulating paper is conveyed from the conveying unit. The control unit slows the conveying speed when the first sensor detects the spliced portion. The cutting unit cuts the insulating paper when the second sensor detects the spliced portion.

[0006] According to one aspect of the present disclosure, there is provided an insulating paper processing device comprising: a conveying unit that conveys insulating paper having a spliced portion from an upstream side to a downstream side; a cutting unit that cuts the insulating paper; a first sensor that is provided upstream of the cutting unit and that detects the spliced portion; and a control unit that controls a conveying speed at which the insulating paper is conveyed from the conveying unit, wherein the control unit slows the conveying speed when the first sensor detects the spliced portion. In this insulating paper processing device, when the first sensor detects the spliced portion, the control unit slows down the conveyance speed, allowing the cutting unit to cut the targeted portion more precisely, thereby reducing the amount of excess cutting before and after the spliced portion.

[0007] The present disclosure can be realized in various forms, for example, in the form of a manufacturing method or processing method for insulating paper. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a diagram showing the configuration of an insulating paper processing device. [Figure 2] 10 is a flowchart illustrating an example of processing. [Figure 3] 10 is a graph showing changes in supply speed in a comparative example. [Figure 4] 10 is a graph showing changes in supply speed in this embodiment. [Figure 5] 10 is a flowchart showing an example of processing processing in the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] A. First embodiment: FIG. 1 is a diagram showing the configuration of a processing device 100 for insulating paper 200 in this embodiment. The processing device 100 is a device that manufactures and processes insulating paper 200 by cutting it. The processing device 100 is made up of a microcomputer constituted by a central processing unit (CPU), RAM, ROM, etc., and a robot. The processing device 100 realizes the functions of a conveying unit 10, a cutting unit 20, a first sensor 30, a second sensor 40, and a control unit 50 by the microcomputer executing a pre-installed program to control the robot. However, some or all of the functions of each of these units may be realized by hardware circuits.

[0010] In this embodiment, the insulating paper 200 is in a roll form. The insulating paper 200 has an insulating paper portion Pi and a foil joint portion Pt. The foil joint portion Pt is the portion where the insulating paper portions Pi are connected to each other. The foil joint portion Pt is provided according to the length of the insulating paper portion Pi. In this embodiment, the foil joint portion Pt is vinyl tape. The insulating paper 200 is yellow, and the foil joint portion Pt is black.

[0011] The conveying unit 10 conveys the insulating paper 200 from the upstream side to the downstream side. In this embodiment, the conveying unit 10 conveys the insulating paper 200 in the direction of arrow A1. The conveying unit 10 has a mechanism for unwinding the insulating paper 200 and a conveying roller.

[0012] The cutting unit 20 cuts the insulating paper 200. For example, the cutting unit 20 clamps and cuts the insulating paper 200 from both sides. In this embodiment, the cutting unit 20 cuts the insulating paper 200 to remove the foil spliced portion Pt of the insulating paper 200. More specifically, the cutting unit 20 cuts the insulating paper 200 from a position P1 that is a predetermined distance downstream from the downstream end of the foil spliced portion Pt along the longitudinal direction of the insulating paper 200 to a position P2 that is a predetermined distance upstream from the upstream end of the foil spliced portion Pt along the longitudinal direction of the insulating paper 200.

[0013] The first sensor 30 and the second sensor 40 detect the foil splice portion Pt of the insulating paper 200. The first sensor 30 and the second sensor 40 are, for example, color sensors that can distinguish the color of an object. The first sensor 30 is provided upstream of the cutting unit 20. The second sensor 40 is provided between the first sensor 30 and the cutting unit 20. The first sensor 30 and the second sensor 40 output their detection results to the control unit 50. The first sensor 30 and the second sensor 40 may be sensors with the same performance, or the second sensor 40 may be a sensor with higher accuracy than the first sensor 30. High accuracy means, for example, high resolution or a finer range of distinguishable hues.

[0014] The control unit 50 is a programmable logic controller (PLC). The control unit 50 controls the conveying unit 10 in response to signals output from the first sensor 30 and the second sensor 40. The control unit 50 controls the conveying unit 10 to control the supply speed, which is the speed at which the insulating paper 200 is supplied. More specifically, the control unit 50 controls the speed at which the insulating paper 200 is unwound and the rotation speed of the conveying roller. The control unit 50 also controls the cutting unit 20 to cut the insulating paper 200.

[0015] FIG. 2 is a flowchart showing an example of the processing process. In the processing process, the processing device 100 cuts the foil spliced portion Pt of the insulating paper 200. This process is repeatedly performed while the insulating paper 200 is being transported by the transport unit 10. In step S100, the control unit 50 determines whether the first sensor 30 has detected the foil spliced portion Pt. Specifically, the control unit 50 uses the signal detected by the first sensor 30 to determine whether the portion of the insulating paper 200 detected by the first sensor 30 is black or yellow. If the first sensor 30 has detected the foil spliced portion Pt, that is, if the control unit 50 determines that the portion of the insulating paper 200 detected by the first sensor 30 is black, the process proceeds to step S110. On the other hand, if the first sensor 30 has not detected the foil spliced portion Pt, that is, if the control unit 50 determines that the portion of the insulating paper 200 detected by the first sensor 30 is not black, the processing process ends.

[0016] In step S110, the control unit 50 controls the conveying unit 10 to slow down the conveying speed. For example, the control unit 50 controls the conveying unit 10 to reduce the conveying speed from 1900 mm / sec to 190 mm / sec, thereby reducing the conveying speed.

[0017] In step S120, the control unit 50 determines whether the second sensor 40 has detected the foil spliced portion Pt. Specifically, the control unit 50 uses the signal detected by the second sensor 40 to determine whether the portion of the insulating paper 200 detected by the second sensor 40 is black or yellow. If the second sensor 40 has detected the foil spliced portion Pt, that is, if the control unit 50 determines that the portion of the insulating paper 200 detected by the second sensor 40 is black, the process proceeds to step S130, where the cutting unit 20 cuts the insulating paper 200. On the other hand, if the second sensor 40 has not detected the foil spliced portion Pt, that is, if the control unit 50 determines that the portion of the insulating paper 200 detected by the second sensor 40 is not black, the processing apparatus 100 proceeds to step S135 and executes abnormality processing. The abnormality processing is, for example, processing to stop operation of the processing apparatus 100. The user may also be notified that operation of the processing apparatus 100 has stopped.

[0018] FIG. 3 is a graph showing changes in the supply speed in a comparative example, and FIG. 4 is a graph showing changes in the supply speed in this embodiment. As a comparative example, FIG. 3 shows changes in the supply speed in a processing apparatus 100 in which the control unit 50 does not control the supply speed. In the comparative example shown in FIG. 3, the conveying unit 10 conveys the insulating paper 200 at a speed v1. There is a slight time lag between when the first sensor 30 detects the spliced portion Pt and when the control unit 50 recognizes that the first sensor 30 has detected the spliced portion Pt. Therefore, when the first sensor 30 detects the spliced portion Pt at timing t1, the control unit 50 recognizes that the first sensor 30 has detected the spliced portion Pt at timing t2, which is later than timing t1.

[0019] In the present embodiment shown in FIG. 4, when the first sensor 30 detects the spliced foil portion Pt at time t2, the control unit 50 controls the conveying unit 10 to slow the supply speed to speed v2, which is slower than speed v1. When the second sensor 40 detects the spliced foil portion Pt at time t3, the control unit 50 recognizes that the second sensor 40 has detected the spliced foil portion Pt at time t4, which is later than time t3. Because the length of the insulating paper 200 conveyed at speed v2 from time t3 to time t4 is shorter than the length of the insulating paper 200 conveyed at speed v1 from time t1 to time t2, in this embodiment, the distance between the second sensor 40 and the first sensor 30 can be shortened. In other words, the processing apparatus 100 can be made smaller. Furthermore, in this embodiment, cutting is performed while the insulating paper 200 is being transported at a speed v2 that is slower than the speed v1, so the length of the insulating paper 200 transported between when the cutting unit 20 receives an instruction from the control unit 50 and when it actually cuts the insulating paper 200 is shorter than in the comparative example, making it possible to cut a more targeted portion than in the comparative example. As a result, it is possible to reduce the amount of excess cutting before and after the foil splice portion Pt.

[0020] According to the processing device 100 for the insulating paper 200 of this embodiment described above, when the first sensor 30 detects the foil splice portion Pt, the control unit 50 slows down the conveyance speed, allowing the cutting unit 20 to cut a more targeted portion. This makes it possible to reduce the amount of excess cutting before and after the foil splice portion Pt.

[0021] Furthermore, since the processing device 100 is equipped with the second sensor 40, it can detect the foil splice portion Pt of the insulating paper 200 when the transport speed has slowed down. Therefore, the cutting portion 20 can cut with higher accuracy.

[0022] B. Second embodiment: 5 is a flowchart showing an example of processing in the second embodiment. The processing in the second embodiment differs from the processing in the first embodiment in that if the control unit 50 does not detect the foil splice portion Pt in step S100, the processing proceeds to step S125, but the other steps are the same as those in the first embodiment.

[0023] In step S125, the control unit 50 determines whether the second sensor 40 has detected the spliced portion Pt. If the second sensor 40 has detected the spliced portion Pt, the process proceeds to step S137, and the processing device 100 executes abnormality processing. On the other hand, if the second sensor 40 has not detected the spliced portion Pt, the processing process ends. The abnormality processing in step S137 may be the same as the abnormality processing in step S135, or may be different.

[0024] According to the processing apparatus 100 of the second embodiment described above, when the first sensor 30 detects the spliced portion Pt but the second sensor 40 does not detect the spliced portion Pt, abnormality processing is executed. Therefore, an abnormality in the first sensor 30 or the second sensor 40 can be detected.

[0025] C: Other embodiments: (C1) In the above-described embodiment, the processing apparatus 100 does not necessarily have to include the second sensor 40.

[0026] (C2) In the above-described embodiment, the first sensor 30 and the second sensor 40 are color sensors that can distinguish the color of an object. However, the first sensor 30 and the second sensor 40 may be image sensors that detect an object by image processing of an image captured by a camera, or the first sensor 30 and the second sensor 40 may be different sensors. It is preferable that the first sensor 30 and the second sensor 40 are non-contact sensors.

[0027] The present disclosure is not limited to the above-described embodiments and can be realized in various configurations without departing from the spirit thereof. For example, the technical features in the embodiments corresponding to the technical features in each aspect described in the Summary of the Invention section can be appropriately replaced or combined to solve the above-described problems or achieve some or all of the above-described effects. Furthermore, if a technical feature is not described as essential in this specification, it can be appropriately deleted. [Explanation of symbols]

[0028] 10...conveying section, 20...cutting section, 30...first sensor, 40...second sensor, 50...control section, 100...processing device, 200...insulating paper, Pi...insulating paper portion, Pt...foil splicing portion,

Claims

[Claim 1] Insulating paper processing equipment, a conveying unit that conveys the insulating paper having a foil splice portion from an upstream side to a downstream side; a cutting unit that cuts the insulating paper; a first sensor provided upstream of the cutting portion for detecting the spliced portion; a second sensor provided between the first sensor and the cutting portion for detecting the spliced portion; a control unit that controls a conveying speed, which is a speed at which the insulating paper is conveyed from the conveying unit, the control unit slows down the conveying speed when the first sensor detects the spliced portion, The cutting unit cuts the insulating paper when the second sensor detects the spliced portion.

Images