JP2016117188A - Pelletizer cutting management support apparatus and pelletizer cutting management support method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pelletizer cutting management support apparatus capable of easily and securely perform the management of a clearance between a cutting edge and a die face.SOLUTION: A pelletizer cutting management support apparatus 100 of this invention comprises a dispersion value generation part 108 that acquires a plurality of pieces of face data related to the cut face of a cut piece just after a cutting edge to generate dispersion values from the plurality of pieces of face data and a clearance judgement part 109 that judges a clearance between a cutting edge and a die face. The clearance judgement part 109 judges that the clearance is acceptable when a dispersion value of face data is smaller than a dispersion threshold value and judges that the clearance is unacceptable when a dispersion value of face data is larger than a dispersion threshold value on the basis of the dispersion value of face data and the dispersion threshold value.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pelletizer cutting management support device and pelletizer cutting for supporting management of cutting in a pelletizer device that cuts a synthetic resin extruded from a die hole formed in a die surface by a cutting blade that rotates along the die surface. It relates to management support methods.

  2. Description of the Related Art Conventionally, a pelletizer device is known in which a cut piece (pellet) is formed by sequentially cutting the resin with a cutting blade inside a storage chamber for storing the resin extruded from a die hole. In such a pelletizer device, for example, when the clearance between the cutting blade and the die is increased, the cut surface of the cut piece after being cut may be elongated or burrs may occur on the cut surface. If the cut surface becomes elongated or burrs occur on the cut surface, there will be a problem that it becomes difficult to melt the cut piece smoothly in the subsequent process using the cut piece. As a result, the operation of the entire apparatus is stopped. For this reason, it is important to adjust the clearance between the cutting blade and the die. In this case, it is also conceivable to form a window for viewing the inside of the storage room on the wall surface of the storage room. However, in many cases, a rotating shaft with a cutting blade attached is disposed on the front side of the die hole, and therefore, a window must be formed on the upper wall of the storage chamber, and a cutting portion to be cut with the cutting blade is provided. It is difficult to inspect from the window. Also, the change in the clearance between the cutting blade and the die is difficult to see by inspection from the window.

  On the other hand, in Patent Document 1, for example, when the cutting blade is attached to the rotating shaft and set, after attaching the cutting blade, an adjustment plate formed in advance for clearance adjustment is attached instead of the pelletizer device, instead of the die, The clearance between the cutting blade and the die is adjusted by adjusting the cutting blade and the adjusting plate to a predetermined clearance, and the adjusting plate is removed after the adjustment.

JP 11-129243 A

  However, in Patent Document 1, when the cutting blade is newly attached and set, the clearance is adjusted, and the operating cutting portion that is actually cut with the cutting blade is not observed. Therefore, for example, when the clearance changes due to the influence of the temperature change of the pelletizer device or wear of the cutting blade during operation, there is a problem that the change of the clearance is difficult to understand and it is difficult to manage the clearance.

  An object of the present invention is to provide a pelletizer cutting management support device and a pelletizer cutting management support method capable of easily and surely managing the clearance between a cutting blade and a die surface.

  A pelletizer cutting management support device according to an aspect of the present invention supports management of cutting in a pelletizer device that cuts a synthetic resin extruded from a die hole formed in a die surface with a cutting blade that rotates along the die surface. A pelletizer cutting management support device, a plurality of surface data related to the cut surface of the cut piece immediately after being cut by the cutting blade, a variance value generating unit that generates a variance value from the acquired plurality of surface data; And a clearance determining unit that determines whether the clearance between the die surface and the cutting blade is good or not based on a dispersion value and a dispersion threshold of the surface data.

  According to this configuration, since the quality of the clearance is determined based on the dispersion value of the surface data and the dispersion threshold, the quality of the clearance can be reliably determined, and the clearance can be easily and reliably managed. Specifically, when the clearance is increased (when abnormal), the shearing force of the cutting blade decreases and the sharpness deteriorates. Therefore, the size of the cutting surface increases or the shape has a burr that is long and pulled. It is easy to become. Therefore, the dispersion value of the surface data is larger than that when the clearance is normal. Therefore, the clearance determination unit determines that the clearance is good when the dispersion value is smaller than a preset dispersion threshold, and determines that the clearance is not acceptable when the dispersion value is larger than the dispersion threshold. Thereby, the clearance determination part can determine the quality of clearance reliably. Therefore, when the clearance becomes larger than a predetermined value due to the influence of the temperature change of the pelletizer device or wear of the cutting blade during operation, the clearance can be immediately notified to the administrator etc., and the administrator etc. can be adjusted. it can. Therefore, the pelletizer cutting management support device of the present invention can manage the clearance easily and reliably.

  In another aspect, in the pelletizer cutting management support device, the surface data is an area of the cutting surface, a roundness, or a length of a longest portion.

  According to this configuration, as the clearance increases, the area of the cut surface increases and the roundness becomes more irregular, or the length of the longest part becomes longer. Alternatively, the clearance can be accurately determined by using the length of the longest part as the plane data.

  In another aspect, in the pelletizer cutting management support device, the cutting blade includes at least three blades that are spaced apart from each other along a circumferential direction, and the surface data is obtained by each cutting blade. A plurality of cut surfaces of the cut pieces are obtained.

  According to this configuration, since the determination is made for each of the surface data of the cut surface of the cut piece by at least three cutting blades arranged at intervals along the circumferential direction, a more accurate determination can be performed. .

  In another aspect, in the pelletizer cutting management support device, a database that stores an inclination value that displays an inclination of the cutting blade with respect to the die surface in association with a variance value of the surface data for each cutting blade; An inclination determination unit that determines an inclination of the cutting blade with respect to the die surface, and the inclination determination unit obtains the inclination value corresponding to the variance value of the surface data acquired for each cutting blade from the database. It is characterized in that whether the inclination of the cutting blade with respect to the die surface is good or bad is determined based on the extracted inclination value and the inclination threshold value of the inclination of the cutting blade with respect to the die surface.

  According to this structure, the inclination determination unit can determine the inclination of the cutting blade with respect to the die surface. Thereby, for example, even if the clearance is good, it is possible to detect a cutting blade having a large inclination, and the cutting blade can be managed in a more favorable cutting state.

  A pelletizer cutting management support method according to an aspect of the present invention manages cutting in a pelletizer device that cuts a synthetic resin extruded from a die hole formed in a die surface with a cutting blade that rotates along the die surface. A pelletizer cutting management support method using a pelletizer cutting management support device, wherein the pelletizer cutting management support device acquires a plurality of surface data relating to the cut surface of a cut piece immediately after being cut by the cutting blade, and acquires the acquired surface data. A dispersion value is generated from a plurality of surface data, and whether or not the clearance between the die surface and the cutting blade is good is determined based on the dispersion value of the surface data and a dispersion threshold value.

  According to this configuration, the clearance determination unit determines that the clearance is good when the dispersion value is smaller than a preset dispersion threshold, and determines that the clearance is not when the dispersion value is greater than the dispersion threshold. . Thereby, the clearance determination part can determine the quality of clearance reliably. Therefore, when the clearance becomes larger than a predetermined value due to the influence of the temperature change of the pelletizer device or wear of the cutting blade during operation, the clearance can be immediately notified to the administrator etc., and the administrator etc. can be adjusted. it can. Therefore, the pelletizer cutting management support method of the present invention can manage the clearance easily and reliably.

  The pelletizer cutting management support device and the pelletizer cutting management support method of the present invention can easily and reliably manage the clearance between the cutting blade and the die surface.

It is a block diagram which shows the structure of the pelletizer cutting | disconnection management assistance apparatus of this invention. It is a figure of an example of the database which the pelletizer cutting | disconnection management assistance apparatus of FIG. 1 has. It is an example of the flowchart of the pelletizer cutting | disconnection management assistance method performed using the pelletizer cutting | disconnection management assistance apparatus of FIG. It is sectional drawing of the principal part of the pelletizer apparatus of one Embodiment with which the pelletizer cutting | disconnection management assistance apparatus of FIG. 1 is applied. It is the II-II sectional view taken on the line of FIG. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. It is sectional drawing of the principal part of other embodiment of a pelletizer apparatus. It is sectional drawing of the principal part of other embodiment of a pelletizer apparatus. It is a schematic diagram of the state which cut | disconnected synthetic resin with the cutting blade. It is a figure of an example of the cut surface of a cutting piece. It is a figure showing the relationship between surface data and clearance. It is a graph showing the relationship between the dispersion value of surface data and clearance. It is a figure showing the relationship between clearance and inclination.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration of a pelletizer cutting management support apparatus according to the present invention, and FIG. 2 is a diagram illustrating an example of a database included in the pelletizer cutting management support apparatus of FIG. In the following description, the X1 direction in FIGS. 4 to 11 will be described as the front side, the X2 direction as the rear side, the Y1 direction as the left side, and the Y2 direction as the right side.

  The pelletizer cutting management support device 100 of the present invention is a device that supports management of cutting of the pelletizer device 1. First, prior to the description of the pelletizer cutting management support device 100 of the present invention, the pelletizer device 1 of the present embodiment is used based on FIGS. 4 to 11.

  As shown in FIGS. 4 to 8, the pelletizer device 1 of this embodiment includes a die 2, cutting blades 3 a to 3 d, a blade operation unit 5 that rotates the cutting blades 3 a to 3 d, and cutting blades 3 a to 3 d. The storage chamber 4 for storing the cut piece 10 (shown in FIG. 11) cut in step S3, and the optical image sending of the optical image of the cut portion by the cutting blades 3a to 3d inside the storage chamber 4 from the inside of the storage chamber 4 to the outside Part 6.

  The die 2 includes a die surface 21 formed on the front surface and a plurality of die holes 22 a and 22 formed on the die surface 21. The die surface 21 protrudes from the front surface of the die 2 to the front side in a disk shape with a predetermined width in the radial direction.

  The die holes 22 are arranged on the predetermined pitch circle 221 from the center O1 of the die surface 21 along the circumferential direction of the pitch circle 221 at equal intervals.

  Each die hole 22 is formed so as to penetrate the die surface 21 from the rear surface of the die 2.

  The die 2 formed in this way is connected to a synthetic resin kneader (not shown) on the rear side so that the synthetic resin is extruded from the die hole 22.

  The storage chamber 4 is defined by a storage chamber partition wall 41 formed so as to surround the front of the die 2 and the die 2. Specifically, the storage chamber partition wall 41 includes a peripheral wall 411 and a front wall 412 formed at a predetermined distance on the front side of the die 2. The storage chamber 4 is partitioned by the peripheral wall 411 of the storage chamber partition wall 41, the front wall 412, and the die 2.

  In addition, an inlet 42 through which hot water flows into the storage chamber 4 is provided at a lower portion of the peripheral wall 411 of the storage chamber partition wall 41. Further, an outlet 43 through which hot water flowing into the storage chamber 4 flows out is provided at an upper portion of the peripheral wall 411 of the storage chamber partition wall 41.

  The blade operation unit 5 includes a rotary shaft portion 51 and a blade holding portion 52 that holds the cutting blades 3a to 3d. The rotation shaft portion 51 is disposed so as to rotate freely through the front wall 412 of the storage chamber partition wall 41 so that the axis O2 of the rotation shaft portion 51 and the center O1 of the die surface 21 coincide with each other. One end portion of the rotation shaft portion 51 in the axial direction is accommodated in the storage chamber 4. Note that the other end of the rotating shaft 51 is connected to a drive motor (not shown), and rotates in accordance with the operation of the drive motor.

  The blade holding portion 52 is connected to one end portion in the axial direction of the rotating shaft portion 51 and is disposed inside the storage chamber 4 so as to face the die 2, and is a circular die facing the die 2. A cutting blade mounting portion 522 for mounting the cutting blades 3a to 3d is provided on the facing surface 521. In this embodiment, the cutting blade attachment portion 522 is composed of four formed at equal intervals in the circumferential direction of the die facing surface 521.

  In this embodiment, the cutting blade is composed of four cutting blade attachment portions 522 corresponding to the number of first cutting blades 3a to 4d. Each of the cutting blades 3a to 3d has a substantially rectangular parallelepiped shape. Each of the cutting blades 3a to 3d is disposed on the pitch circle 221 of the die hole 22 with the longitudinal direction of the cutting blades 3a to 3d extending in the radial direction of the die facing surface 521, and the cutting blade mounting portion 522. Removably attached to.

  In this embodiment, the optical image sending unit 6 includes a reflection mirror 61 as an optical system disposed inside the storage chamber 4 and an image passage unit that passes the optical image reflected by the reflection mirror 61 to the outside of the storage chamber 4. 62.

  In this embodiment, the image passing portion 62 is formed on the right side of the peripheral wall 411 of the storage compartment partition wall 41, and has a circular image sending hole 621 and a plate-like transparent body arranged in the image sending hole 621. 622. The image sending hole 621 is formed so as to penetrate from the outer surface to the inner surface of the peripheral wall 411. The transparent body 622 covers the image sending hole 621 so that hot water in the storage chamber 4 does not leak from the image sending hole 621.

  In this embodiment, the reflecting mirror 61 is supported by a support member (not shown) so as to be disposed in front of the rightmost die hole 22a and on the left side which is the radially inner side of the image passing portion 62. Yes. Note that the reflecting mirror 61 is not limited to one and may be composed of a plurality. For example, the number corresponding to the cutting blade may be provided, and the reflecting mirror may send the optical image of the cutting portion by each cutting blade.

  Specifically, the storage chamber partition wall 41 of the storage chamber 4 is provided with a support member. One end of the support member is connected to the storage chamber partition wall 41, and the other end of the support member is extended to a position in front of the rightmost die hole 22 and to the left side of the image passing portion 62. The reflecting mirror 61 is connected to the other end of the support member, so that the cutting blades 3 a to 3 d cut the resin extruded from the die hole 22 across the rightmost die hole 22 a of the die 2. An image of the cut portion to be sent can be sent to the image passing portion 62.

  Next, the pelletizer cutting management support apparatus 100 will be described. As shown in FIG. 1, the pelletizer cutting management support apparatus 100 includes an imaging unit 101, an input unit 102, an output unit 103, an interface unit (IF unit) 104, a storage unit 105, and a control processing unit 106. I have.

  The imaging unit 101 is connected to the control processing unit 106. In this embodiment, as shown in FIG. 5, for example, the imaging unit 101 includes a high-speed camera 101a that can capture 100 frames per second and a light irradiation unit 101b. The high-speed camera 101a is arranged on the right side of the image passage unit 62 outside the storage chamber 4 so as to take an optical image sent to the reflecting mirror 61 via the image passage unit 62. Yes. Then, the high-speed camera 101a sends the captured image data to the control processing unit 106.

  The light irradiation unit 101 b emits light to the rightmost die hole 22 a of the die 2 inside the storage chamber 4 and its peripheral part through the image passing unit 62 to the side of the high-speed camera 101 a outside the storage chamber 4. It is arranged so that it can be irradiated.

  As shown in FIG. 1, the input unit 102 is connected to the control processing unit 106, and various commands necessary for the device 100 to perform various commands such as a measurement start instruction and pelletizer cutting management support such as a sample name, for example. A device that inputs data to the pelletizer cutting management support apparatus 100, such as a plurality of input switches assigned with predetermined functions, a keyboard, and a mouse.

  The output unit 103 is connected to the control processing unit 106, and outputs a command and data input from the input unit 102, a result determined by the pelletizer cutting management support apparatus 100, and the like under the control of the control processing unit 106 For example, a display device such as a CRT display, an LCD and an organic EL display, a printing device such as a printer, and the like.

  The input unit 102 and the output unit 103 may be configured with a touch panel. In the case of configuring this touch panel, the input unit 102 is a position input device that detects and inputs an operation position such as a resistive film method or a capacitance method, and the output unit 103 is a display device. In this touch panel, a position input device is provided on the display surface of the display device, one or more input content candidates that can be input to the display device are displayed, and the user touches the display position where the input content to be input is displayed. The position is detected by the position input device, and the display content displayed at the detected position is input to the pelletizer cutting management support device 100 as the operation input content of the user. In such a touch panel, since the user can easily understand the input operation intuitively, the pelletizer cutting management support device 100 that is easy for the user to handle is provided.

  The IF unit 104 is a circuit that is connected to the control processing unit 106 and inputs / outputs data to / from an external device according to the control of the control processing unit 106. For example, an interface circuit of an RS-232C that is a serial communication system , An interface circuit using the Bluetooth (registered trademark) standard, an interface circuit performing infrared communication such as an IrDA (Infrared Data Association) standard, and an interface circuit using the USB (Universal Serial Bus) standard.

  The storage unit 105 is a circuit that stores various predetermined programs such as a pelletizer cutting management support program and various predetermined data under the control of the control processing unit 106. The storage unit 105 includes, for example, a ROM (Read Only Memory) that is a nonvolatile storage element, an EEPROM (Electrically Erasable Programmable Read Only Memory) that is a rewritable nonvolatile storage element, and the like. The storage unit 47 includes a RAM (Random Access Memory) that serves as a working memory of the control processing unit 106 that stores data generated during the execution of the predetermined program. The storage unit 105 may include a hard disk as necessary.

  In this embodiment, the storage unit 105 stores a dispersion threshold value and an inclination threshold value. As shown in FIG. 2, the storage unit 105 includes a database 111 that stores inclination values in association with the dispersion values of the four (plural) cutting blades 3a to 3d. This inclination value is data relating to the inclination α of the cutting blades 3 a to 3 d with respect to the die surface 21.

  The control processing unit 106 controls each unit of the pelletizer cutting management support apparatus 100 according to the function of each unit. The control processing unit 106 includes, for example, a CPU (Central Processing Unit) and its peripheral circuits. The control processing unit 106 functionally includes a control unit 107, a variance value generation unit 108, and determination units 109 and 110, which will be described later, by executing a control processing program.

  The control processing unit 106 includes a control unit 107, a dispersion value generation unit 108, a clearance determination unit 109 that determines the clearance between the die surface 21 and the cutting blades 3a to 3d, and the die surface 21 of the cutting blades 3a to 3d. An inclination determination unit 110 that determines the inclination is provided.

  The control unit 107 is for controlling each part of the pelletizer cutting management support apparatus 100 according to the function of each part.

  The variance value generation unit 108 is image data sent from the imaging unit 101, such as a contour enhancement process that emphasizes the contour of the image data about the cut surface of the cut piece immediately after being cut by the cutting blades 3 a to 3 d. Image processing is executed to acquire a plurality of surface data related to the cut surface. The surface data is, for example, the area of the cut surface, the roundness, or the length of the longest portion. Further, the variance value generation unit 108 generates variance values of the acquired plurality of surface data.

  Based on the variance value generated by the variance value generator 108 and a preset variance threshold value, the clearance determination unit 109 has a clearance when the variance value of the surface data is smaller than the variance threshold value (for example, variance value ≦ the variance threshold value). When the variance is larger than the dispersion threshold (for example, dispersion value> dispersion threshold), it is determined that there is no clearance.

  Specifically, when the clearance t between the die surface 21 and the cutting blades 3a to 3d increases, the cut surface of the cut piece 10 becomes elongated (elliptical) as shown in FIGS. 11 and 12, or the cut surface. In many cases, burrs (not shown) are generated. As a result, for example, the area S of the cut surface, the length L1 of the longest portion of the cut surface, and the dispersion value of the roundness are larger than the dispersion value of the cut surface with good clearance. For example, as shown in FIGS. 13 and 14, in the area S of the cut surface with a clearance larger than the good clearance by a predetermined amount, the dispersion value becomes larger than the area of the cut surface with the good clearance. The roundness can be obtained, for example, by the difference between the smallest inscribed circle and the largest inscribed circle.

  Therefore, a good clearance, that is, the maximum value of the clearance that can be cut into a cut piece that can be smoothly melted in a subsequent process using the cut piece is set as a dispersion threshold value. A determination is made based on the dispersion threshold.

  When the inclination α (shown in FIG. 4) of the cutting blades 3a to 3d with respect to the die surface 21 is larger than a predetermined value, the inclination determination unit 110 makes the cut surface of the cut piece long and narrow as in the case where the clearance is increased. Since there is a case where burrs are formed on the cut surface, the inclination α of the cutting blades 3a to 3d with respect to the die surface 21 is determined. In this embodiment, the inclination determination unit 110 performs the determination as follows.

  First, an inclination value shown in FIG. 2 described later corresponding to the dispersion value of the surface data generated for each of the cutting blades 3 a to 3 d is extracted from the database 111.

  In addition, the inclination determination unit 110 determines that the extracted inclination value is smaller than the inclination threshold based on the extracted inclination value and the inclination threshold value of the inclination of the cutting blades 3a to 3d with respect to the die surface 21 (for example, inclination value ≦ It is determined that the inclination of the cutting blades 3a to 3d with respect to the die surface 21 is good (inclination threshold value), and on the other hand, when the inclination value is larger than the inclination threshold value (for example, inclination value> inclination threshold value) Do.

  Next, a pelletizer cutting management support method performed using the pelletizer cutting management support apparatus 100 will be described.

  The storage chamber 4 is in a state where hot water is introduced from the inflow port 42 and the storage chamber 4 is filled with the introduced hot water and flows out of the outlet 43. In this state, the rotation shaft 51 of the blade operation unit 5 is rotated by starting the drive motor, and the cutting blades 3 a to 3 d are rotated along the die surface 21 along with the rotation. Further, the synthetic resin is extruded from each die hole 22 of the die 2.

  The extruded synthetic resin is cut each time the cutting blades 3 a to 3 d cross the die hole 22 to form the cut piece 10.

  And in this embodiment, in the case of the cutting | disconnection, the imaging part 101 image | photographs the cutting surface of the cutting piece 10 immediately after each cutting blade 3a-3d crosses the rightmost die hole 22a for every cutting blade 3a-3d. .

  The photographed image data of the cut surface is sent to the control processing unit 106. And the control processing part 106 takes the surface data of a cut surface, for example, the data about an area for every cutting blade 3a-3d based on the received image data.

  Then, as shown in FIG. 3, the control processing unit 106 determines whether or not the surface data of each of the cutting blades 3a to 3d has reached a preset number (for example, 50) (step S1), and becomes the preset number. In this case, the variance value generation unit 108 of the control processing unit 106 generates a variance value of the surface data for each of the cutting blades 3a to 3d (step S2). In addition, when the surface data of each cutting blade 3a-3d is not the set number, it waits until it reaches the set number.

  Next, the clearance determination unit 109 checks whether or not the variance value is smaller than a preset variance threshold (step S3). When the variance value is smaller than a preset variance threshold, the variance value generation unit 108 determines that the clearance is good (step S4).

  On the other hand, when the variance value is not smaller than the variance threshold, the clearance determination unit 109 determines that there is no clearance (step S5). This determination is made for each of the cutting blades 3a to 3d. Moreover, in this embodiment, when the clearance determination unit 109 determines NO, the clearance determination unit 109 displays NO on the output unit 103 along with the display of the cutting blades 3a to 3d corresponding to NO.

  Thereby, it is possible to immediately notify the administrator or the like of the cutting blades 3a to 3d whose clearance has become too large, and it is possible to cause the administrator or the like to correct the clearance of the cutting blades 3a to 3d.

  Next, the inclination determination unit 110 extracts an inclination value corresponding to the variance value of the surface data generated for each of the cutting blades 3a to 3d from the database 111 (step S6). For example, when the variance value of the first cutting blade 3a is a1, the variance value of the second cutting blade 3b is b1, the variance value of the third cutting blade 3c is c1, and the variance value of the fourth cutting blade 3d is d1, the database 111 Then, α1 is extracted as the slope value corresponding to them.

  And the inclination determination part 110 determines whether the extracted inclination value is smaller than an inclination threshold value (step S7). When the inclination value is smaller than the inclination threshold value, the inclination determination unit 110 determines that the inclination of the cutting blades 3a to 3d with respect to the die surface 21 is good (step S8).

  On the other hand, when the inclination value is not smaller than the inclination threshold value, the inclination determination unit 110 determines that the inclination of the cutting blades 3a to 3d with respect to the die surface 21 is no (step S9). And when the inclination determination part 110 determines NO, it displays on the output part 103 that the inclination with respect to the die surface 21 of the cutting blades 3a-3d is no.

  Thus, for example, as shown in FIG. 15, it is difficult to find a state in which the inclination of the cutting blades 3 a to 3 d is large with respect to the die surface 21 only by determining the clearance. On the other hand, it is possible to find a state in which the inclinations of the cutting blades 3a to 3d are larger than a predetermined value, and to notify the administrator or the like. Therefore, the administrator or the like can correct the inclination of the cutting blades 3a to 3d.

  In the above-described embodiment, the reflecting mirror 61 is used as the optical system of the pelletizer device 1. For example, as shown in FIG. 9, a prism 161 may be used as the optical system.

  Further, as shown in FIG. 10, an endoscope 160 may be used as the optical system. Further, when the endoscope 160 is used, for example, as shown in FIG. 10, the first endoscope 160 a disposed on the front side of the die hole 22 and the second interior disposed radially outside the die hole 22. Two of the endoscopes 160b may be used, or any one of them may be used. Further, when such an endoscope 160 is used, if a device having a CCD image sensor and a light irradiation unit is used, it can be used as the imaging unit 101 of the pelletizer cutting management support apparatus 100, and the imaging unit 101 is provided separately. It is not necessary, can be simplified, and can be easily manufactured.

DESCRIPTION OF SYMBOLS 1 Pelletizer apparatus 2 Die 3 Cutting blade 4 Storage chamber 22, 22a Die hole 61 Reflective mirror (optical system)
DESCRIPTION OF SYMBOLS 100 Pelletizer cutting | disconnection management assistance apparatus 108 Dispersion value production | generation part 109 Clearance determination part 110 Inclination determination part 111 Database

Claims (5)

A pelletizer cutting management support device for supporting the management of cutting in a pelletizer device that cuts a synthetic resin extruded from a die hole formed in a die surface by a cutting blade that rotates along the die surface,
A plurality of surface data related to the cut surface of the cut piece immediately after being cut by the cutting blade, a variance value generating unit that generates a variance value from the acquired plurality of surface data;
A pelletizer cutting management support apparatus, comprising: a clearance determining unit that determines whether the clearance between the die surface and the cutting blade is good or not based on a dispersion value and a dispersion threshold of the surface data.   The pelletizer cutting management support device according to claim 1, wherein the surface data is an area, roundness, or length of a longest portion of the cut surface. The cutting blade includes at least three blades spaced apart from each other along the circumferential direction,
The pelletizer cutting management support device according to claim 1 or 2, wherein a plurality of pieces of the surface data are acquired for the cutting surfaces of the respective cut pieces by the cutting blades. A database that stores an inclination value indicating the inclination of the cutting blade relative to the die surface in association with a variance value of the surface data for each cutting blade, and an inclination determination that determines an inclination of the cutting blade relative to the die surface. And further comprising
The inclination determination unit pours out the inclination value corresponding to the variance value of the surface data acquired for each cutting blade from the database, and the inclination value extracted and the inclination of the cutting blade with respect to the die surface. The pelletizer cutting management support device according to claim 3, wherein whether or not the inclination of the cutting blade with respect to the die surface is good is determined based on an inclination threshold value. Pelletizer cutting management support method using a pelletizer cutting management support device for managing cutting in a pelletizer device that cuts a synthetic resin extruded from a die hole formed on a die surface with a cutting blade that rotates along the die surface Because
The pelletizer cutting management support device acquires a plurality of surface data related to the cut surface of the cut piece immediately after being cut by the cutting blade, generates a variance value from the acquired plurality of surface data, and the variance value of the surface data And determining whether the clearance between the die surface and the cutting blade is good or bad based on the dispersion threshold.

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