JP5144696B2 - Drilling device for synthetic resin tank - Google Patents

Description

  The present invention relates to a tank drilling device, and more particularly to a device for drilling a circular hole in a synthetic resin tank used as a fuel tank of an automobile or the like.

  When drilling into the fuel tank, it is necessary to prevent the scrapped scrap from falling into the tank. For this reason, conventionally, as shown in FIG. 11 (A), a cutter 102 is provided at the center of rotation of the cutter blade 101, and the cutter blades 101, 101 are screwed and held at the center of the portion cut out by the drill 102. There has been proposed a device that performs a circular cut-out operation by a method of pushing in toward the inside of the tank 103 while rotating (Patent Document 1).

JP 2002-361505 A

  However, in the drilling device proposed in Patent Document 1, as shown in FIG. 11 (B), the chips 104 remain in the tank 103, and a work process for removing and inspecting them is necessary. There's a problem. Further, there is a problem that the tank 103 is deformed by the pushing of the cutter blade 101 and the blade 101 is broken.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an apparatus that can prevent not only residual scrap but also residual chips, does not cause deformation of the tank, and does not cause blade breakage. As made.

  The synthetic resin tank drilling device of the present invention made to achieve the above object is a drilling device for opening a circular hole in a synthetic resin tank, and has the following configuration. It is characterized by being.

(1) A cutting blade that is cylindrical and has a sharp cutting edge at the lower end, and a cutting blade that is disposed inside the cutting blade, and the angle between the rake face and the flank face is set to a positive acute angle. A cutting blade provided with a cutting edge having a shape for scooping resin, and a composite blade that is integrated so that the cutting edge of the tearing blade protrudes beyond the cutting edge of the cutting blade.

  (2) The rotating shaft on which the blade unit is mounted is hollow.

  (3) A blade lifting device that lifts and lowers the blade unit, a blade rotating device that rotates the blade unit, and generates negative pressure inside the blade unit to adsorb scrap and generate positive pressure to generate the scrap. And a scrap processing device that executes a process for discharging the blade, and a control device that drives and controls the blade lifting device, the blade rotating device, and the scrap processing device.

  (4) The control device raises the blade rotation device and the blade rotation device so that the blade unit and the tank are brought into contact with each other and the cutting is started after the rotation number of the blade rotation device is increased to a predetermined rotation number. It is configured to execute processing to control the drive.

  (5) The control device generates a negative pressure inside the blade unit before at least the cutting edge of the cutting blade penetrates the tank, and when the cutting edge of the cutting blade penetrates the tank, the control device descends. A process of driving and controlling the blade lifting device and the scrap processing device is executed so that the operation is stopped and the blade unit is pulled out from the tank and the inside of the blade unit is switched to a positive pressure at a predetermined discharge position. To be configured.

  According to the synthetic resin tank drilling device of the present invention, the cutting blade is fitted into a tearing blade (cutter blade), the material is cut with the cutter blade and the inside is sealed at the same time, and the inside is cut by the cutting blade. Cut to remove material. A negative pressure is applied to the inside, and the scrap can be sucked and held even after penetrating, and the chips can be sucked up and discharged. The scrap is discharged at a predetermined scrap processing position by switching the inside of the blade unit to a positive pressure. Except for the first bite and the last penetration of the cutter blade, the cutting operation proceeds naturally with the progress of the cutting of the cutting blade. No load is applied.

  Here, in the configuration of (5), either the method of raising the blade or the method of lowering the tank may be employed as a method for bringing the blade unit out of the tank. Further, the scrap discharge position can be either a position shifted in the horizontal direction from a position where the drilling process is executed or a position where the drilling process is executed. The position where the drilling process is executed may be the position where the tank is rotated by the index table and retracted, or the tank is moved by the roller conveyor and retracted to create a space below the drilling position. This is because it is possible to make a structure such as introducing shoots, dropping scraps and discharging.

  The synthetic resin tank drilling device of the present invention may further include the following configuration.

  (3A) A horizontal movement device that moves the blade unit in the horizontal direction is also provided, and the control device drives and controls the horizontal movement device in addition to the blade lifting device, the blade rotation device, and the scrap processing device. To be configured.

  (5A) The control device generates a negative pressure inside the blade unit before at least the cutting edge of the cutting blade penetrates the tank, and when the cutting edge of the cutting blade penetrates the tank, the control device descends. The blade lifting device, the horizontal movement device, and the horizontal movement device, so that the operation is stopped and the blade unit is raised to a position where it can be extracted from the tank and moved in the horizontal direction, and the inside of the blade unit is switched to a positive pressure at a predetermined discharge position. It shall be configured to execute processing to drive and control the scrap processing device.

  As described above, the scrap discharge position can be set near the hole drilling position, but in that case, the scrap discharge processing cannot be executed unless after the tank is retracted. On the other hand, by providing (3A) and (5A), the operation for scrap discharge processing after the blade unit is extracted from the tank can be executed independently of the tank retracting operation. There is an advantage of becoming. In the middle of the process of (5A), it is preferable to stop the rotation of the blade by the blade rotation device when the blade unit is extracted from the tank.

Another type of synthetic resin tank drilling device of the present invention, which has also been made to achieve the above object, has a circular shape so as to surround the air blowing hole with respect to the synthetic resin tank having the air blowing hole. A drilling device for opening the holes is characterized by having the following configuration.

(11) A cutting blade provided with a cutting edge having a shape for scooping resin by making the angle between the rake face and the flank face a positive acute angle, and the lower end of the cutting edge covering the periphery of the cutting blade A blade unit comprising a cylindrical slide cover mounted so as to be slidable in the up-down direction in a state where it protrudes further, and a compression spring that urges the slide cover downward.

  (12) The rotating shaft on which the blade unit is mounted is hollow.

  (13) A blade lifting device that lifts and lowers the blade unit, a blade rotating device that rotates the blade unit, a negative pressure generated inside the blade unit to adsorb scrap and a positive pressure to generate scrap. And a scrap processing device that executes a process for discharging the blade, and a control device that drives and controls the blade lifting device, the blade rotating device, and the scrap processing device.

  (14) The controller raises and lowers the blade so that the slide cover comes into contact with the tank and pushes back to bring the cutting blade into contact with the tank and starts cutting at a predetermined cutting speed by the cutting blade. It is comprised so that the process which drives and controls an apparatus and a cutter rotation apparatus may be performed.

  (15) The control device generates a negative pressure in the blade unit before at least the cutting edge of the cutting blade penetrates the tank, and when the cutting edge of the cutting blade penetrates the tank, the control unit descends. A process of driving and controlling the blade lifting device and the scrap processing device is executed so that the operation is stopped and the blade unit is pulled out from the tank and the inside of the blade unit is switched to a positive pressure at a predetermined discharge position. To be configured.

  According to this type of synthetic resin tank drilling device, at the start of cutting with a cutting blade, the outside is covered with a slide cover and sealed to prevent chips from being scattered to the outside, and also due to negative pressure. Enables scrap retention.

  This type of synthetic resin tank drilling device may also have the following configuration.

  (13A) A horizontal movement device that moves the blade unit in the horizontal direction is also provided, and the control device drives and controls the horizontal movement device in addition to the blade lifting device, the blade rotation device, and the scrap processing device. To be configured.

  (15A) The control device generates a negative pressure inside the blade unit at least before the cutting edge of the cutting blade penetrates the tank, and when the cutting edge of the cutting blade penetrates the tank, the control device descends. The blade lifting device, the horizontal movement device, and the horizontal movement device, so that the operation is stopped and the blade unit is raised to a position where it can be extracted from the tank and moved in the horizontal direction, and the inside of the blade unit is switched to a positive pressure at a predetermined discharge position. It shall be configured to execute processing to drive and control the scrap processing device.

  By providing (13A) and (15A), the operation for scrap discharge processing after the blade unit is extracted from the tank can be executed independently of the tank retracting operation. There are advantages. Here again, it is preferable to stop the rotation of the blade by the blade rotation device when the blade unit is extracted from the tank during the process of (15A).

  Here, in addition to the above-described configurations (11) to (15), the following configuration may be provided for the tank having the air blowing holes at the time of blow molding.

  (21) The cylindrical main body of the blade unit is provided with two long holes formed so as to be elongated in the vertical direction at positions facing each other through the center.

  (22) A shaft mounting hole is formed in the slide cover so as to overlap the long hole of the main body.

(23) A lid body is attached to the center of the shaft that passes through the long hole of the main body and the shaft attachment hole of the slide cover and is fixed to both ends with respect to the slide cover.
(24) When the bottom surface of the slide cover comes into contact with the synthetic resin tank and the compression spring starts to shrink, the lid body also comes into contact with the synthetic resin tank. It is configured to be provided with a lower end flush with the lower end of the slide cover so that the air blowing hole can be closed with a lid to make the inner space of the cutting blade a sealed space .

  Since the air blowing hole can be closed by the lid body that moves up and down integrally with the slide cover, the drilling can be executed with the inner space of the cutting blade as the sealed space.

  According to the present invention, it is possible not only to prevent chips and the like from remaining, but also to prevent breakage of the blade and deformation of the tank, and to perform a circular hole processing on the synthetic resin tank.

The drilling apparatus of Example 1 is shown, (A) is a conceptual diagram of a structure, (B) is an image figure of an effect | action. It is a disassembled perspective view of the cutter with which the apparatus of Example 1 is mounted | worn. 3 is a flowchart illustrating the contents of control processing of the apparatus according to the first embodiment. FIG. 3 is an image diagram illustrating an operation of the apparatus according to the first embodiment. The drilling apparatus of Example 2 is shown, (A) is a conceptual diagram of a structure, (B) is sectional drawing of a blade unit. It is a perspective view which shows the removal | desorption mechanism of the blade unit in the apparatus of Example 2. FIG. 10 is a flowchart illustrating the contents of control processing of the apparatus according to the second embodiment. FIG. 6 is an image diagram illustrating an operation of the apparatus according to the second embodiment. FIG. 6 is an image diagram illustrating an operation of the apparatus according to the second embodiment. It is an image figure which shows the design concept of the cutting blade in the apparatus of Example 2. FIG. It is a schematic diagram which shows a prior art and its problem.

  Hereinafter, it is a drilling device for opening a circular hole with respect to a tank made of synthetic resin, and (1) to (5), (11) to (15) and (21) to (23) described above. An embodiment will be described for an apparatus having the above configuration.

  As shown in FIG. 1A, the tank drilling device 1 according to the first embodiment includes a blade unit 10, a blade lifting device 20 that lifts and lowers the entire blade unit 10, and a blade that rotates the entire blade unit 10. Rotating device 30, horizontal moving device 40 for moving the entire device in the horizontal direction, scrap processing device 50 for processing the adsorption and discharge of scrap to be cut, these blade lifting device 20, blade rotating device 30, horizontal It is comprised from the control apparatus 60 which drive-controls the moving apparatus 40 and the scrap processing apparatus 50. FIG.

  The rotary shaft 15 of the blade unit 10 is constituted by a hollow pipe, and the upper end thereof is connected to the scrap processing device 50. Further, the rotary shaft 15 made of the hollow pipe has a structure in which the rotational force from the blade rotating device 30 is transmitted to the outer peripheral surface thereof (for example, meshed with a ring gear, or a sprocket is fitted to be chain driven). ). The blade lifting device 20 has a structure that lifts and lowers the rotary shaft 15 together with the blade rotating device 30. The scrap processing apparatus 50 has a blower installed at the tip of a bellows type tube connected to the upper end of the hollow pipe constituting the rotary shaft 15. By switching the blower between normal rotation and reverse rotation, the hollow pipe is in a negative pressure state. Thus, the scrap can be adsorbed and the scrap can be discharged in a positive pressure state.

  As shown in FIG. 1 (B), the blade unit 10 includes a tearing blade 11 that is cylindrical and has a sharp cutting edge formed at the lower end, and an outer cutting blade 12 that fits inside the tearing blade 11. Is done. The cutting edge 11 a of the tearing blade 11 protrudes beyond the cutting edge 12 a of the cutting blade 12. Therefore, when it is lowered by the blade lifting device 20, the cutting edge 11a of the tearing blade 11 contacts the resin tank T and bites into it.

  In the present embodiment, the tearing blade 11 is provided with two protruding portions 11b that protrude downward 2 mm in an arc shape on the cutting edge 11a in the circumferential direction. Moreover, this protrusion part 11b is a part which acts as a tearing blade, and the tearing blade 11 and the cutting blade 12 are fitted in a relationship in which the tip of the cutting edge 11b protrudes 2 mm from the cutting edge 12a of the cutting blade 12. This is because the present embodiment is designed for drilling a resin tank T having a thickness of 6 mm. The protrusion amount of the cutting edge 11b of the tearing blade 11 is not limited to 2 mm. However, it is desirable that the amount of protrusion is equal to or less than ½ of the thickness of the resin tank T so that it does not cause pressure deformation to the resin tank T. The cutting blade 11 and the cutting blade 12 may be coupled not only by a fitting method such as shrink fitting, but also by a coupling method such as screwing or brazing.

  The cutting blade 12 is formed with two cutting edges 12a having a shape of scooping resin at the lower end of the cylindrical body with a positional relationship shifted by 180 degrees in the circumferential direction.

  Thus, when the cutting edge 11 a of the tearing blade 11 bites into the resin tank T, a sealed space is formed inside the blade unit 10. As a result, by operating the scrap processing device 50, the upper surface of the tank to be cut is sucked so as to be in contact with the cutting edge 12a of the cutting blade 12 by negative pressure.

  Next, the contents of the control process executed by the control device 60 will be described. When the drilling operation start is instructed, the control device 60 first drives the blade rotating device 30 to rotate the blade unit 10 at a steady speed as shown in the flowchart of FIG. The blade unit 10 is lowered by driving and controlling the apparatus 20 (S20). Further, the scrap processing device 50 is driven to generate a negative pressure in the hollow pipe (S30). When the blade unit 10 descends and the cutting edge 11a of the tearing blade 11 approaches the surface of the resin tank T (S40: YES), the descending speed is switched from high speed to low speed (S50).

  And if the blade edge | tip 11a of the tearing blade 11 penetrates the tank T (S70: YES), the blade raising / lowering apparatus 20 will be switched to the state of high-speed raising control (S80). Next, the rotation of the blade by the blade rotation device 30 is stopped (S100). When the rotary shaft 15 is raised to a predetermined position (S110: YES), the raising operation is stopped (S120), and the horizontal movement device 40 is driven to move the rotary shaft 15 horizontally to a predetermined position (scrap discharge position). (S130 to S150), the blower of the scrap processing apparatus 50 is temporarily stopped to eliminate the negative pressure state (S160), and then the blower is reversely rotated to the positive pressure state and then the blower is stopped (S165). Thereby, the scrap adsorbed inside the cutting blade 12 is discharged. Then, the horizontal movement device 40 is driven in the reverse direction to return the rotary shaft 15 to the original position (S170, S180). When the rotary shaft 15 returns to the original position (S180: YES), the horizontal movement device 40 is stopped (S190), it is determined whether or not work completion has been commanded (S200), and work completion has not been commanded. If this is the case (S200: NO), it is determined whether or not the next tank is set (S210). If the next tank is set (S210: YES), the operations from S10 are repeated.

  Then, when the cutting edge 11a of the tearing blade 11 penetrates the resin tank T (S60: YES), the blade lifting device 20 is switched to the state of high-speed raising control (S70). Next, the rotation of the blade by the blade rotation device 30 is stopped (S80). When the composite blade 10 is raised to a predetermined position (S100: YES), the ascent operation is stopped (S110), and the horizontal movement device 40 is driven to move the composite blade 10 horizontally to a predetermined position (scrap discharge position). Stops (S120 to S140), outputs a projection command to the scrap discharge air cylinder 51, and discharges the cut scrap (S150). Thereafter, a return command is output to the scrap discharge air cylinder 51 to return the rod 52 to the original immersion state (S160). Then, the horizontal moving device 40 is driven in the reverse direction to return the composite blade 10 to the original position (S170, S180). When the composite blade 10 returns to the original position (S180: YES), the horizontal movement device 40 is stopped (S190), it is determined whether or not work completion is commanded (S200), and work completion is not commanded. If this is the case (S200: NO), it is determined whether or not the next tank is set (S210). If the next tank is set (S210: YES), the operations from S10 are repeated.

  Here, in the process of S30, it is possible to determine whether or not the vehicle is approaching by an appropriate method such as an elapsed time after the descent starts and a descent distance measurement. The determination in S70 employs a method of detecting by a stress sensor or the like that the reaction force applied to the rotating shaft 15 has become less than a predetermined value, a method of determining based on the descending position of the rotating shaft 15, a method of determining from the descending speed, and the like. Can do. The determinations of S110, S140, and S180 can be detected by a limit switch or the like, or can be determined by a moving distance. S200 may be determined based on the setting state of the command signal, and S210 may be determined using an optical sensor or the like.

  With the above control process, as shown in FIGS. 4A to 4E, the cutting operation is performed mainly for cutting with the chips L sucked upward, and the scrap remains adsorbed after the penetration. The scrap and the chips L can be discharged without dropping into the tank.

  According to the present embodiment, the cutting blade 12 is fitted into the tearing blade 11, the material is cut with the tearing blade 11, and the inside is sealed at the same time, and the cutting with the cutting blade 12 is performed on the inside to remove the material. . A negative pressure is applied to the inside, and the scrap continues to be sucked and retained after it penetrates. Note that, due to the negative pressure during cutting, the chips L are sucked up inside the rotary shaft 15 formed of a hollow pipe and discharged to the outside. Further, except for the case where the cutting blade 11 is first bite and the last penetration, the cutting operation naturally proceeds as the cutting blade 12 advances, so that the cutting edge 11a hardly breaks and the tank 40 is not broken. In addition, a large pressing load is not applied. Therefore, according to the present embodiment, not only chips and scraps can be prevented from remaining, but also blade breakage and tank deformation can be prevented.

  As shown in FIG. 5, the tank drilling device of Example 2 includes a blade unit 70, a blade lifting device 20 that lifts and lowers the blade unit 70, a blade rotating device 30 that rotates the blade unit 70, and the entire device. A horizontal movement device 40 for moving in the horizontal direction, a scrap processing device 50 for processing the adsorption and discharge of scrap to be cut off, the blade lifting device 20, the blade rotating device 30, the horizontal movement device 40, and the scrap processing device 50 It is comprised from the control apparatus 60 which drives-controls.

  The blade unit 70 includes a cylindrical lid-shaped main body 71, a cylindrical slide cover 72 attached to the outside of the main body 71 so as to be slidable in the vertical direction, and a disk-shaped attachment 73 integrated with the upper end of the main body 71. It is configured.

A circular opening 71 a is provided at the upper center of the main body 71. The attachment 73 is also provided with an opening 73a communicating with the opening 71a. Further, at the lower end of the main body 71, two cutting edges 71b for scraping the resin are formed at two positions with a positional shift of 180 degrees in the circumferential direction. The main body 71 also includes two long holes 71c formed so as to be elongated in the vertical direction at positions facing each other through the center.

  A shaft mounting hole 72 a is formed in the slide cover 72 so as to overlap the long hole 71 c of the main body 71. And the shaft 75 is inserted so that the long hole 71c of the main body 71 and the shaft attachment hole 72a of the slide cover 72 may be penetrated. The shaft 75 is secured to both ends of the slide cover 72 using an E-ring 75a.

  A lid 76 is attached to the center of the shaft 75. The movement of the vertical axis 76 a of the lid 76 in the horizontal direction is restricted by the left and right cylindrical spacers 75 b and 75 b attached to the shaft 75. In addition, a circular recess 76 b is formed on the bottom surface of the lid 76. The bottom surface of the lid 76 and the bottom surface of the slide cover 72 are flush with each other.

  The rotating shaft 15 to which the blade unit 70 is attached is constituted by a hollow pipe, and the upper end thereof is connected to the scrap processing device 50. Further, the rotary shaft 15 made of the hollow pipe has a structure in which the rotational force from the blade rotating device 30 is transmitted to the outer peripheral surface thereof (for example, meshed with a ring gear, or a sprocket is fitted to be chain driven). ). The blade lifting device 20 has a structure that lifts and lowers the rotary shaft 15 together with the blade rotating device 30. The scrap processing apparatus 50 has a blower installed at the tip of a bellows type tube connected to the upper end of the hollow pipe constituting the rotary shaft 15. By switching the blower between normal rotation and reverse rotation, the hollow pipe is in a negative pressure state. Thus, the scrap can be adsorbed and the scrap can be discharged in a positive pressure state.

  The blade unit 70 is detachably attached to the lower end of the rotary shaft 15 via the attachment 73. As shown in FIG. 6, the attachment 73 is provided with arc-shaped depressions 73 c at three locations. A circular hole 73d having a full recess width diameter is penetrated through one end of the recess 73c, and an arcuate groove 73e having a width smaller than the recess width is passed through the circular hole 73d.

  The blade unit 70 is formed by inserting a hooking head 82a of a hooking member 82 projecting downward from the ring-shaped plate 81 through the circular hole 73d, and then rotating the ring-shaped plate 81 clockwise in the drawing to form a depression. The hook head 82a is moved and attached to the arcuate groove 73e of 73c (see FIG. 6A). Then, when the ring-shaped plate 81 is rotated counterclockwise in the drawing, the hook head 82a is aligned with the circular hole 73d, and the attachment 73 is removed (see FIGS. 6B and 6C).

  The contents of the control process executed by the control device 60 in the second embodiment are the same as those in the first embodiment as shown in FIG. 7, but the device operation is slightly different. The bottom surface of 72 comes into contact with the resin tank T, and the compression spring 74 starts to contract. At this time, the bottom surface of the lid body 76 also comes into contact with the resin tank T. Therefore, the lid 76 can cover the air blowing hole BH when the resin tank T is blow-molded.

  As a result of the above control processing, as shown in FIGS. 8 and 9, the chips L are confined inside the blade unit 70 with the air blowing hole BH closed, and are sucked up and made of a hollow pipe. The scrap S is sucked and held by the negative pressure, and the cutting operation mainly for cutting is executed. After the penetration, the scrap S rises while being held inside the main body 71, and the scrap S S can be discharged without dropping into the tank.

  In addition, as shown in FIG. 10, it is desirable to reduce the exit clearance at the time of penetration by increasing the rake angle at the tip of the cutting blade 72b.

  As mentioned above, although the Example of this invention was described, it cannot be overemphasized that various deformation | transformation implementation in the range which does not deviate from the summary is not restricted to this Example and this invention is possible.

  For example, in the first embodiment, the cutting blade of the blade unit may be a cutting blade that does not have a cylindrical main body and is integrated with the inner surface of the cutting blade by screwing or brazing.

  It can be used as a device for processing a circular hole in a synthetic resin automobile fuel tank.

DESCRIPTION OF SYMBOLS 1 ... Tank drilling device 10 ... Blade unit 11 ... Ripping blade 11a ... Cutting edge of cutting blade 11b ... Projection part 12 ... Cutting blade 12a ... Cutting blade edge 15 ... Rotating shaft 20 ... Cutter lifting device 30 ... Cutter rotating device 40 ... Scrap processing device 50 ... Horizontal moving device 60 ... Control device 70 ... Cutter unit 71 ... Main body 71a ··· Opening 71b · Cutting edge 71c · Long hole 72 · Slide cover 72a · Shaft mounting hole 73 · Attachment 73a · Opening 73c · Arc-shaped depression 73d .. Circular hole 73e ... Arc-shaped groove hole 74 ... Compression spring 75 ... Shaft 75a ... E ring 75b ... Cylindrical spacer 76 ... Lid 76a ... Vertical shaft 76b・ ・ ・ Circular dent L ・ ・ ・ Cut S ・ ・ ・ Scrap T ・ ・ ・ Resin tank

Claims (4)

A drilling device for a synthetic resin tank, which is a drilling device for opening a circular hole in a synthetic resin tank and has the following configuration.
(1) A cutting blade that is cylindrical and has a sharp cutting edge at the lower end, and a cutting blade that is disposed inside the cutting blade, and the angle between the rake face and the flank face is set to a positive acute angle. A cutting blade provided with a cutting edge having a shape for scooping resin, and a composite blade that is integrated so that the cutting edge of the tearing blade protrudes beyond the cutting edge of the cutting blade.
(2) The rotating shaft on which the blade unit is mounted is hollow.
(3) A blade lifting device that lifts and lowers the blade unit, a blade rotating device that rotates the blade unit, and generates negative pressure inside the blade unit to adsorb scrap and generate positive pressure to generate the scrap. And a scrap processing device that executes a process for discharging the blade, and a control device that drives and controls the blade lifting device, the blade rotating device, and the scrap processing device.
(4) The control device raises the blade rotation device and the blade rotation device so that the blade unit and the tank are brought into contact with each other and the cutting is started after the rotation number of the blade rotation device is increased to a predetermined rotation number. It is configured to execute processing to control the drive.
(5) The control device generates a negative pressure inside the blade unit before at least the cutting edge of the cutting blade penetrates the tank, and when the cutting edge of the cutting blade penetrates the tank, the control device descends. A process of driving and controlling the blade lifting device and the scrap processing device is executed so that the operation is stopped and the blade unit is pulled out from the tank and the inside of the blade unit is switched to a positive pressure at a predetermined discharge position. To be configured. The synthetic resin tank drilling device according to claim 1, further comprising the following configuration.
(3A) A horizontal movement device that moves the blade unit in the horizontal direction is also provided, and the control device drives and controls the horizontal movement device in addition to the blade lifting device, the blade rotation device, and the scrap processing device. To be configured.
(5A) The control device generates a negative pressure inside the blade unit before at least the cutting edge of the cutting blade penetrates the tank, and when the cutting edge of the cutting blade penetrates the tank, the control device descends. The blade lifting device, the horizontal movement device, and the horizontal movement device, so that the operation is stopped and the blade unit is raised to a position where it can be extracted from the tank and moved in the horizontal direction, and the inside of the blade unit is switched to a positive pressure at a predetermined discharge position. It shall be configured to execute processing to drive and control the scrap processing device. A drilling device for opening a circular hole so as to surround the air blowing hole with respect to a synthetic resin tank having an air blowing hole , comprising : Drilling device for resin tanks.
(11) A cutting blade provided with a cutting edge having a shape for scooping resin by making the angle between the rake face and the flank face a positive acute angle, and the lower end of the cutting edge covering the periphery of the cutting blade A blade unit comprising a cylindrical slide cover mounted so as to be slidable in the up-down direction in a state where it protrudes further, and a compression spring that urges the slide cover downward.
(12) The rotating shaft on which the blade unit is mounted is hollow.
(13) A blade lifting device that lifts and lowers the blade unit, a blade rotating device that rotates the blade unit, a negative pressure generated inside the blade unit to adsorb scrap and a positive pressure to generate scrap. And a scrap processing device that executes a process for discharging the blade, and a control device that drives and controls the blade lifting device, the blade rotating device, and the scrap processing device.
(14) The controller raises and lowers the blade so that the slide cover comes into contact with the tank and pushes back to bring the cutting blade into contact with the tank and starts cutting at a predetermined cutting speed by the cutting blade. It is comprised so that the process which drives and controls an apparatus and a cutter rotation apparatus may be performed.
(15) The control device generates a negative pressure in the blade unit before at least the cutting edge of the cutting blade penetrates the tank, and when the cutting edge of the cutting blade penetrates the tank, the control unit descends. A process of driving and controlling the blade lifting device and the scrap processing device is executed so that the operation is stopped and the blade unit is pulled out from the tank and the inside of the blade unit is switched to a positive pressure at a predetermined discharge position. To be configured.
(21) The cylindrical main body of the blade unit is provided with two long holes formed so as to be elongated in the vertical direction at positions facing each other through the center.
(22) A shaft mounting hole is formed in the slide cover so as to overlap the long hole of the main body.
(23) A lid body is attached to the center of the shaft that passes through the long hole of the main body and the shaft attachment hole of the slide cover and is fixed to both ends with respect to the slide cover.
(24) When the bottom surface of the slide cover comes into contact with the synthetic resin tank and the compression spring starts to shrink, the lid body also comes into contact with the synthetic resin tank. It is configured to be provided with a lower end flush with the lower end of the slide cover so that the air blowing hole can be closed with a lid to make the inner space of the cutting blade a sealed space . The synthetic resin tank drilling device according to claim 3, further comprising the following configuration.
(13A) A horizontal movement device that moves the blade unit in the horizontal direction is also provided, and the control device drives and controls the horizontal movement device in addition to the blade lifting device, the blade rotation device, and the scrap processing device. To be configured.
(15A) The control device generates a negative pressure inside the blade unit at least before the cutting edge of the cutting blade penetrates the tank, and when the cutting edge of the cutting blade penetrates the tank, the control device descends. The blade lifting device, the horizontal movement device, and the horizontal movement device, so that the operation is stopped and the blade unit is raised to a position where it can be extracted from the tank and moved in the horizontal direction, and the inside of the blade unit is switched to a positive pressure at a predetermined discharge position. It shall be configured to execute processing to drive and control the scrap processing device.