JP2006239990A - Method and apparatus for automating connection/disconnection operation of cutter unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automate the connection/disconnection operation to the die of the cutter unit provided to an underwater cutting type granulator. <P>SOLUTION: A sequencer 10 is constituted so as to excite solenoid valves 3a and 4 when a push button switch 11 is closed to operate an air motor to control operation for advancing the cutter unit to connect it to the die, operation for exciting a solenoid valve 6 to operate a cylinder 5 and driving a cutter locking ring 15 to lock the cutter unit with the die and operation for exciting a solenoid valve 9 to operate a direct pressure type amplifier 8 and operating a hydraulic cylinder 7 to clamp the cutter unit to the die. Further, the sequencer 10 performs the control of the above mentioned operation substantially inversely when a push button switch 12 is closed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an apparatus and a method for automating connection / disconnection operation of a cutter unit provided in an underwater cut granulator.

  In general, an underwater cut granulator capable of processing a large volume is known for a granulator for processing a synthetic resin raw material into a pellet-like material. This underwater cut granulator is mainly composed of a mixer motor, a drive machine, a screw mixer, a diverter valve, a gear pump, a screen changer, a die, a cutter unit, and the like (for example, Patent Document 1 and Patent Document 2). See).

  The start operation of the conventional underwater cut granulator was performed as follows. That is, the screw mixer, diverter valve, gear pump, screen changer, and die are heated to an operable state, the diverter valve is switched to the discharge side, and the cutter unit is separated from the die. The discharge motor connected via the auxiliary drive is started, and the screw mixer is operated at a low speed. By this operation, the resin remaining in the screw mixer after the previous operation stop and remelted is discharged from the diverter valve to the outside of the apparatus. The synthetic resin raw material continuously discharged from the discharge port of the diverter valve is scraped off manually by an operator.

  Next, the mixer motor is activated to operate the screw mixer, and the feeder is activated to supply the synthetic resin raw material into the screw mixer. The synthetic resin raw material is kneaded and melted in a screw mixer and discharged from the diverter valve to the outside of the machine. The synthetic resin raw material continuously discharged from the discharge port of the diverter valve is manually scraped and discarded by the worker. This operation is continued until the kneaded and molten state of the discharged synthetic resin raw material has a desired property.

  Next, the diverter valve is opened to switch to the discharge side and the gear pump is started. By this operation, the synthetic resin raw material kneaded and melted by the screw mixer is sent to the gear pump through the diverter valve, pressurized by the gear pump, and discharged from the die through the screen changer. The synthetic resin raw material discharged from the dice into a large number of strands is manually scraped and discarded by the operator. The mixer motor and the gear pump are temporarily stopped in a state where the synthetic resin material is constantly discharged from all the die holes of the die.

  Next, the cutter unit is brought close to the die, the circulation box is mounted on the die, the mixer motor and the gear pump are restarted, and simultaneously, the circulating water is passed through the circulation box containing the cutter, and the cutter is driven to rotate. By restarting, the molten synthetic resin raw material is discharged from the die hole of the die, cooled and solidified into a thin rod shape by circulating water, then cut by a cutter rotating along the surface of the die to form a pellet, and by circulating water It is carried out while being cooled. The pellets carried out from the circulation box together with the circulating water are transported to the dehydrating / drying device via the circulating water pipe.

  With respect to such an underwater cut granulator, Patent Document 2 discloses that the operation of each device at the start operation is automated by sequence control, thereby eliminating the manual operation of the operator and enabling the automatic start operation. , A mixer motor 102, a drive unit 103 driven by a discharge motor 112, a screw mixer 104 comprising a cylinder having a hopper 113 to which a feeder is connected, a diverter valve 105 located downstream of the cylinder 104a, a gear pump 106, a screen changer 107 and an underwater cut granulator 101 that automates each operation of the cutter unit 109 by sequence control is disclosed (see FIG. 9).

  The cutter unit 109 in the underwater cut granulator 101 is connected to and separated from the die 108, assembly and disassembly of the circulation box 140 containing the cutter (not shown) into the die 108, and connection through the circulation water pipe 141. The configuration to be performed is configured as shown in FIGS.

As shown in FIGS. 10 to 13, the cutter unit 109 is provided with a circulation box 140 and a cutter motor 150 a on a carriage 150, and a rack 152, a pinion 153, a chain 154, and an air motor 155 are attached to the base 151. It can be reciprocated along the arrow A, and can be moved toward and away from the die 128. On the die 108 side, a fixing ring 160 is configured to be reciprocally rotatable by an air cylinder 161, and a plurality of fixing holes 162 are provided. A plurality of bars 171 are provided in the circulation box 140 through a hydraulic cylinder 170 so as to be reciprocally movable along the direction of arrow B. Each bar 171 is configured to be engageable with a fixing hole 162. Therefore, after the circulation box 140 is joined to the die 108, the fixing ring 160 is rotated by the air cylinder 161 to engage the bar 171 at the engaging position of the fixing hole 162, and the fixing ring 160 is engaged by the air cylinder 161. When the bar 171 is engaged with the fixed position 162a by rotating and the bar 171 is pulled by the hydraulic cylinder 170, the circulation box 140 is firmly attached to the die 108.
Japanese Patent No. 2828601 JP 2004-130600 A

  In the above-mentioned Patent Document 2, the operation of the underwater cut granulator 101 from the start of the discharge motor 112 to the start of the operation of the cutter unit 109 is automatically controlled by a sequence stored in a control unit (not shown). However, no specific means or method is disclosed regarding how to automate the connecting / disconnecting operation of the cutter unit 109 to the die thereafter.

  Therefore, an object of the present invention is to provide an apparatus and a method that can automate the connecting / disconnecting operation of a cutter unit provided in an underwater cut granulator to a die.

  In order to achieve the above object, an apparatus for automating the connecting operation of a cutter unit to a die of the present invention locks the cutter unit to the first and second electromagnetic valves that control the operation of a motor that moves the cutter unit. A third solenoid valve that governs the operation of the cylinder that drives the cutter lock ring for driving, and a fourth solenoid valve that governs the operation of the direct pressure amplifier that supplies hydraulic pressure to the hydraulic cylinder for fastening the cutter unit to the die, A sequencer for controlling each of the electromagnetic valves; and a switch for linking operation connected to the sequencer. When the sequencer is turned on, the sequencer excites the first and second electromagnetic valves to operate the motor. , Moving the cutter unit forward and connecting to the die, and exciting the third solenoid valve to actuate the cylinder, thereby The operation of driving the cutter lock ring to lock the cutter unit to the die and the operation of deactivating the fourth solenoid valve to operate the direct pressure amplifier, thereby operating the hydraulic cylinder and fastening the cutter unit to the die. Configured to control.

  According to the method of automating the connecting operation of the cutter unit to the die of the present invention, the cutter unit locks the cutter unit with the first and second electromagnetic valves that control the operation of the motor that moves the cutter unit. A third solenoid valve that governs the operation of the cylinder that drives the cutter lock ring for driving, and a fourth solenoid valve that governs the operation of the direct pressure amplifier that supplies hydraulic pressure to the hydraulic cylinder for fastening the cutter unit to the die, A sequencer for controlling each electromagnetic valve and a switch for linking operation connected to the sequencer are provided. When the switch is turned on, the sequencer excites the first and second electromagnetic valves to operate the motor. Actuate, move the cutter unit forward and connect it to the die, and the sequencer excites the third solenoid valve to Operating the cutter, thereby driving the cutter lock ring to lock the cutter unit to the die, and the sequencer operates the direct pressure amplifier with the fourth solenoid valve de-energized, thereby operating the hydraulic cylinder And the operation of fastening the cutter unit to the die.

  According to the present invention, the operator simply moves the cutter unit to a position where the cutter unit is connected to the die by pressing the switch for connecting operation, locks the cutter lock ring to the die, and fastens the cutter unit to the die. A series of operations for connecting the cutter unit to the die can be automatically performed.

  The apparatus for automating the cutting operation of the cutter unit with respect to the die of the present invention drives the first and second electromagnetic valves that control the operation of the motor that moves the cutter unit, and the cutter lock ring for locking the cutter unit to the die. A third solenoid valve that controls the operation of the cylinder to be controlled, a fourth solenoid valve that controls the operation of a direct pressure amplifier that supplies hydraulic pressure to the hydraulic cylinder for fastening the cutter unit to the die, and controls each of the solenoid valves A sequencer and a disconnection switch connected to the sequencer. When the switch is turned on, the sequencer excites the fourth solenoid valve to stop the operation of the direct pressure amplifier, thereby The operation of stopping the operation and releasing the fastening of the cutter unit to the die, and deactivating the third solenoid valve The operation of stopping the operation of the Linda, thereby driving the cutter lock ring to unlock the cutter unit with respect to the die, and exciting the first and second solenoid valves to operate the motor and to move the cutter unit backward. To control the operation of separating from the die.

  In the method for automating the cutting operation of the cutter unit with respect to the die according to the present invention, the cutter unit locks the cutter unit with the first and second electromagnetic valves that control the operation of the motor that moves the cutter unit. A third solenoid valve that governs the operation of the cylinder that drives the cutter lock ring for driving, and a fourth solenoid valve that governs the operation of the direct pressure amplifier that supplies hydraulic pressure to the hydraulic cylinder for fastening the cutter unit to the die, A sequencer for controlling each solenoid valve and a switch for disconnection operation connected to the sequencer are provided. When the switch is turned on, the sequencer excites the fourth solenoid valve to operate the direct pressure amplifier. To stop the operation of the hydraulic cylinder and release the fastening of the cutter unit to the die. The operation, the sequencer de-energizes the third solenoid valve to stop the cylinder operation, thereby driving the cutter lock ring to unlock the cutter unit relative to the die, and the sequencer The second solenoid valve is energized to operate the motor, and the cutter unit is moved backward to separate it from the die.

  According to the present invention, the operator releases the fastening of the cutter unit to the die, releases the locked state of the cutter lock ring with respect to the die, and releases the cutter unit from the die simply by pressing the separation switch. A series of operations for separating the cutter unit from the die can be automatically performed.

  As described above, according to the present invention, the connecting / disconnecting operation of the cutter unit with respect to the die can be automated.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing an overall configuration of a cutter unit according to an embodiment of the present invention.

  As shown in FIG. 1A, the cutter unit of the present embodiment includes a carriage 50 that includes wheels 51 and is movable on the base in the illustrated F direction (forward direction) and B direction (reverse direction). 50, a cutter circulation box 30 with a built-in cutter (not shown), a cutter motor 40, and an air motor 1 are provided. The air motor 1 is a drive source for the wheels 51, and the carriage 50 can be moved forward and backward in the FB direction in the figure by rotating the wheels 51 with the air motor 1. The cutter unit can approach and leave the die (not shown) by moving the carriage 50 back and forth in this manner.

  Further, the cutter unit of the present embodiment includes a direct pressure amplifier 8 that amplifies the oil pressure, and a hydraulic cylinder 7 that drives the lock bar 21 (see FIG. 3) by the oil pressure amplified by the direct pressure amplifier 8. ing. By driving the lock bar 21 with the cutter unit approaching a die (not shown), the cutter circulation box 30 can be attached to and detached from the die (not shown). Note that the direct pressure amplifier 8 in the present embodiment generates an oil pressure that is approximately 25 times the pressure of instrumentation air.

  FIG. 1B is a cross-sectional view taken along line AA in FIG. 1A and shows the arrangement of the air motor 1 and the coupling 14. The coupling 14 is a member that transmits the driving force of the air motor 1 to the wheels 51. The coupling 14 transmits the driving force when the coupling 14 is in a connected state, and does not transmit the driving force when the coupling 14 is in a disconnected state.

  FIG.1 (c) is a figure which expands and shows the X section of Fig.1 (a). In this cutter unit, the solenoid valves 3a and 3b for switching the moving direction for moving the cutter unit back and forth, the solenoid valves 2a and 2b for switching the moving speed for moving the cutter unit back and forth between high speed and low speed, and the coupling 14 are connected. The electromagnetic valve 4 which switches a state / non-connection state, and the pressure-reduction valve 60 which maintains instrumentation air at a predetermined pressure are provided. The cutter unit further includes an electromagnetic valve 9 connected to the direct pressure amplifier 8.

  FIG. 2 is an enlarged view showing a connecting portion to the die of the cutter unit shown in FIG. FIG. 3 is a diagram showing the configuration of the hydraulic cylinder shown in FIG. 2 in more detail.

  At the connecting part of the cutter unit to the die, a limit switch 17 for detecting whether or not the cutter unit is connected to the die, and a hydraulic pressure for moving the lock bar 21 in the axial direction with respect to the cutter lock ring 15 provided on the die. A cylinder 7 is provided. Four hydraulic cylinders 7 are provided in the cutter unit. Each hydraulic cylinder 7 has a lock bar 21 whose tip is locked in the locking hole of the cutter lock ring 15 and an internal spring 18 for holding the unlock position of the lock bar 21.

  The operation of the lock bar 21 will be described with reference to FIG. When the hydraulic oil pressurized by the direct pressure amplifier 8 (FIG. 1) (pressure about 25 times the instrument air) is supplied to the suction port 19 of the hydraulic cylinder 7, the lock bar 21 moves to the right in FIG. Move by a stroke of about 5 mm. At this time, the internal spring 18 is pushed and contracted in the right direction to generate a repulsive force. However, since the force generated by the pressure of the hydraulic oil is larger than the repulsive force, the internal spring 18 is pressed in the right direction as described above. It is shortened. Conversely, when the supply of hydraulic oil to the suction port 19 of the hydraulic cylinder 7 is stopped and the hydraulic pressure becomes zero, the lock bar 21 moves to the left in FIG. 3 due to the repulsive force of the internal spring 18, and the cutter lock ring 15 becomes a drivable state.

  FIG. 4 is a view of the die provided with the cutter lock ring 15 shown in FIG. 1 and the like, as viewed from the front side to which the cutter unit is connected. FIG. 5 is a view of the dice shown in FIG. 4 as viewed from the opposite side.

  The die is provided with a cutter lock ring 15, a cylinder 5 that rotationally drives the cutter lock ring 15, and a limit switch 16 that detects that the cutter lock ring 15 is in a locked state or an unlocked state. The die is formed with four insertion holes through which the tip of the lock bar 21 is inserted, and the cutter lock ring 15 is formed with four lock holes 15a having a shape in which large and small holes are connected.

  As shown in FIG. 4, when the cutter lock ring 15 is rotated to a position where the insertion hole of the die and the larger hole of the lock hole 15a of the cutter lock ring 15 overlap, the cutter lock ring 15 is “unlocked”. State ". On the other hand, when the cutter lock ring 15 is rotated by the cylinder 5 to the position shown in FIG. 5 with the lock bar 21 inserted into the insertion opening and the lock hole 15a during such unlocking, the tip of the lock bar 21 is rotated. Engages with the smaller one of the lock holes 15a. As a result, the cutter lock ring 15 enters the “locked state”.

  From this locked state, the hydraulic cylinder 7 shown in FIG. 3 is driven to pull the lock bar 21 toward the cutter unit, that is, to the right in FIG. 3, thereby firmly connecting the cutter unit circulation box 30 and the die. Can do.

  FIG. 6 is a piping instrumentation diagram (P & ID (Piping & Instrumentation Diagram)) relating to the cutter unit shown in FIG.

  As described above, the coupling 14 is switched between a connected state and a disconnected state by exciting the electromagnetic valve 4. When the coupling 14 is in the connected state, the coupling 14 transmits the driving force of the air motor 1 to the wheel 51 (FIG. 1), and does not transmit the driving force when the coupling 14 is in the disconnected state. When the cutter unit moves in the direction approaching the die, the cutter unit is connected to the die, and the cutter lock ring 15 is locked (see FIG. 5), the solenoid valve 4 is de-energized and the coupling 14 is automatically Disconnected and disconnected. Whether or not the cutter lock ring 15 is in the locked state is detected by the limit switch 16 provided on the die side as described above.

  The sequencer 10 is connected with a push button switch 11 for connecting operation and a push button switch 12 for disconnecting operation. The electromagnetic valve 3a is controlled by the sequencer 10 so that the electromagnetic valve 3a is excited when the operator pushes the push button switch 11 when moving the cutter unit forward. On the other hand, the electromagnetic valve 3b is controlled by the sequencer 10 so as to be excited when the operator pushes the push button switch 12 when the cutter unit is moved backward. The above-described electromagnetic valve 4 is controlled by the sequencer 10 so that it is excited when one of the push button switches 11 and 12 is pressed. That is, when any one of the push button switches 11 and 12 is pressed, the coupling 14 is connected, and the driving force of the air motor 1 is transmitted to the wheel 51 (FIG. 1). In the present embodiment, an example using the push button switches 11 and 12 is shown, but the type of the switch is not limited to the push button type.

  The moving speed of the cutter unit that is moved in the front-rear direction (the FB direction in FIG. 1) by the air motor 1 depends on the pressure of the instrument air when the solenoid valves 2a and 2b are excited. Become the fastest. Since the moving speed of the cutter unit depends on the pressure of the instrument air, the higher the instrument air pressure, the faster the speed. If the moving speed of the cutter unit is increased, the cutter unit can be quickly connected to the die. In order to adjust the moving speed of the cutter unit, the moving speed of the cutter unit can be adjusted by deactivating the solenoid valves 2a and 2b and using the speed controller 13, and the moving speed of the cutter unit can be adjusted according to the situation. Can be changed.

  Next, the connecting operation of the cutter unit of this embodiment will be described. FIG. 7 is a flowchart for explaining the connecting operation of the cutter unit.

  When connecting the cutter unit to the die, first, the operator presses the push button switch 11 for starting the connection operation (step 1). Then, the sequencer 10 controls the solenoid valves 3a and 4 to an excited state (step 2). When the solenoid valves 3a and 4 are excited, the coupling 14 is connected, and the cutter unit is moved in the forward direction (direction F in FIG. 1) by the driving force of the air motor 1.

  At this time, the sequencer 10 detects whether the cutter unit is connected to the die (step 3). Specifically, a limit switch 17 (see FIG. 2) provided in the connecting portion of the cutter unit is connected to the sequencer 10, and the sequencer 10 is connected to the limit switch 17 when the cutter unit is connected to the die. By receiving the transmitted signal, it is detected that the cutter unit is connected to the die.

  When the sequencer 10 detects that the cutter unit is connected to the die, the sequencer 10 excites the electromagnetic valve 6 that operates the cylinder 5 for driving the cutter lock ring 15 (step 4). When the solenoid valve 6 is energized, the cylinder 5 is operated and the cutter lock ring 15 is rotated to the lock side.

  At this time, the sequencer 10 detects whether or not the cutter lock ring 15 has been locked (step 5). Specifically, a limit switch 16 (see FIGS. 4 and 5) provided on the die side is connected to the sequencer 10, and the sequencer 10 starts from the limit switch 16 when the cutter lock ring 15 is locked. By receiving the transmitted signal, it is detected that the cutter lock ring 15 is locked.

  When the sequencer 10 detects that the cutter lock ring 15 is in the locked state, the sequencer 10 de-energizes the solenoid valve 4 for switching the connection state / non-connection state of the coupling 14 so that the coupling 14 is not connected ( Step 6). Thereby, transmission of the driving force by the air motor 1 to the wheels 51 is interrupted, and the forward movement of the cutter unit is stopped.

  At this time, the sequencer 10 de-energizes the electromagnetic valve 9 that operates the direct pressure amplifier 8 (step 7). When the solenoid valve 9 is in a non-excited state, instrumentation air pressure is applied to the primary side of the direct pressure amplifier 8, and oil pressure is generated in the secondary hydraulic line of the direct pressure amplifier 8. At this time, the direct pressure amplifier 8 outputs an oil pressure of about 25 times the pressure of the instrument air to the secondary hydraulic line. The high hydraulic pressure generated in the secondary hydraulic line activates the hydraulic cylinder 7 and fastens the cutter unit to the die by the lock bar 21 (step 8). A pressure switch 20 for detecting the oil pressure is installed on the secondary side of the direct pressure amplifier 8, and this pressure switch 20 is connected to the sequencer 10. The pressure switch 20 outputs a signal when an oil pressure higher than a certain set value is applied, and when the signal is input, the sequencer 10 ends a series of operations related to the connection of the cutter unit to the die (step 9). ).

  The reason why the oil pressure is generated in the secondary hydraulic line of the direct pressure amplifier 8 when the solenoid valve 9 is in a non-excited state is that the coil of the solenoid valve 9 is based on the concept of so-called fail-safe design. This is because even when the electromagnetic valve 9 is cut off and the solenoid valve 9 remains in a non-excited state, the connection force of the cutter unit to the die is reduced so that the cutter unit does not come off the die.

  According to the configuration and the operation described above, the operator simply moves the cutter unit to the position where it is connected to the die by pressing the push button switch 11, locks the cutter lock ring 15 to the die, and turns the cutter unit into the die. A series of operations for connecting the cutter unit to the die can be automatically performed until fastening. Also, the moving speed of the cutter unit can be adjusted by de-energizing the solenoid valves 2a and 2b and using the speed controller 13, and when the moving speed of the cutter unit is set to a relatively high speed, the cutter unit The connecting operation of the cutter unit can be performed in a short time, and when the moving speed of the cutter unit is set to a relatively low speed, the connecting operation of the cutter unit can be performed while ensuring higher safety.

  Next, the cutting operation of the cutter unit of this embodiment will be described. FIG. 8 is a flowchart for explaining the cutting operation of the cutter unit.

  When the cutter unit is separated from the die, first, the operator pushes the push button switch 12 for starting the separation operation (step 11). Then, the sequencer 10 controls the electromagnetic valve 9 to an excited state (step 12). When the solenoid valve 9 is energized, the pressure in the secondary hydraulic line of the direct pressure amplifier 8 decreases, the clamping force between the cutter unit and the die by the hydraulic cylinder 7 decreases, and eventually becomes “zero”. That is, the cutter lock ring 15 can be set to “unlock”.

  Thereafter, the pressure switch 20 detects that the pressure in the secondary hydraulic line of the direct pressure amplifier 8 has dropped to a predetermined set pressure that can bring the cutter lock ring 15 into the “unlocked state”. Then, the detection signal is transmitted to the sequencer 10. When the sequencer 10 determines that the pressure in the secondary hydraulic line has decreased to a predetermined set pressure in this way (step 13), the solenoid valve 6 is de-energized, thereby operating the cylinder 5. The cutter lock ring 15 is rotated to the “unlock” side (step 14). The fact that the cutter lock ring 15 is not locked, that is, the unlocked state, is detected by a limit switch 16 provided on the die side. When the limit switch 16 detects that the cutter lock ring 15 has changed from the locked state to the unlocked state, the limit switch 16 transmits the detection signal to the sequencer 10.

  When the sequencer 10 determines that the cutter lock ring 15 has been unlocked in this way (step 15), the sequencer 10 excites the solenoid valve 4 (step 16) and further excites the solenoid valve 3b. When the solenoid valves 3b and 4 are in an excited state, the coupling 14 is connected, and the cutter unit moves in the reverse direction (direction B in FIG. 1) by the driving force of the air motor 1. The cutter unit is provided with a position detection sensor (not shown) that detects the position relative to the base. The position detection sensor detects that the cutter unit has moved back to a predetermined position, and the detection signal is used to detect the position. When input from the sensor to the sequencer 10, the sequencer 10 terminates a series of operations relating to the cutting of the cutter unit from the die (step 18).

  According to the configuration and the operation described above, the operator simply presses the push button switch 12 to release the cutter unit from the die, release the cutter lock ring 15 from the die, and remove the cutter unit. A series of operations for separating the cutter unit from the die until it is detached from the die can be automatically performed. Also, the moving speed of the cutter unit can be adjusted by de-energizing the solenoid valves 2a and 2b and using the speed controller 13, and when the moving speed of the cutter unit is set to a relatively high speed, the cutter unit The cutting operation can be performed in a short time, and when the moving speed of the cutter unit is set to a relatively low speed, the cutting operation of the cutter unit can be performed while ensuring higher safety.

It is a figure which shows the whole structure of the cutter unit which concerns on one Embodiment of this invention. It is a figure which expands and shows the connection part to the die | dye of the cutter unit shown to Fig.1 (a). It is a figure which shows the structure of the hydraulic cylinder shown in FIG. 2 in detail. It is the figure which looked at the die | dye provided with the cutter lock ring shown in FIG. 1 etc. from the front side to which a cutter unit is connected. It is the figure which looked at the dice | dies shown in FIG. 4 from the other side. It is a piping instrumentation diagram regarding the cutter unit shown in FIG. It is a flowchart for demonstrating the connection operation | movement of a cutter unit. It is a flowchart for demonstrating the cutting | disconnection operation of a cutter unit. It is a figure which shows the structure of the conventional underwater cut type granulator. It is a figure which shows the structure of the cutter unit in the underwater cut type granulator shown in FIG. It is a figure which shows the structure of the cutter unit in the underwater cut type granulator shown in FIG. It is a figure which shows the structure of the cutter unit in the underwater cut type granulator shown in FIG. It is a figure which shows the structure of the cutter unit in the underwater cut type granulator shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air motor 2a, 2b, 3a, 3b, 4, 6, 9 Solenoid valve 5 Cylinder 7 Hydraulic cylinder 8 Direct pressure type amplifier 10 Sequencer 11, 12 Pushbutton switch 13 Speed controller 14 Coupling 15 Cutter lock ring 15a Lock hole 16, 17 Limit switch 18 Internal spring 19 Suction port 20 Pressure switch 21 Lock bar 30 Cutter circulation box 40 Cutter motor 50 Carriage 51 Wheel 60 Pressure reducing valve

Claims (4)

A device for automating the connecting operation of a cutter unit to a die,
Cylinder (5) for driving the first and second solenoid valves (3a, 4) for controlling the operation of the motor (1) for moving the cutter unit and the cutter lock ring (15) for locking the cutter unit to the die. A fourth solenoid valve (9) that governs the operation of a direct pressure amplifier that supplies hydraulic pressure to a hydraulic cylinder (7) for fastening the cutter unit to the die; A sequencer (10) for controlling each of the solenoid valves (3a, 4, 6, 8), and a switch (11) for connecting operation connected to the sequencer (10);
When the switch (11) is turned on, the sequencer (10) excites the first and second solenoid valves (3a, 4) to operate the motor (1), and advances the cutter unit to connect to the die. The operation, the third solenoid valve (6) is excited to operate the cylinder (5), the cutter lock ring (15) is driven to lock the cutter unit to the die, and the fourth solenoid valve (9 ) Is de-energized, the direct pressure amplifier (8) is operated, and the hydraulic cylinder (7) is operated to control the operation of fastening the cutter unit to the die. A device that automates operations. A device for automating the cutting operation of a cutter unit with respect to a die,
Cylinder (5) for driving the first and second solenoid valves (3b, 4) for controlling the operation of the motor (1) for moving the cutter unit and the cutter lock ring (15) for locking the cutter unit to the die. A fourth solenoid valve (9) that governs the operation of a direct pressure amplifier that supplies hydraulic pressure to a hydraulic cylinder (7) for fastening the cutter unit to the die; A sequencer (10) for controlling the solenoid valves (3b, 4, 6, 8), and a switch (12) for disconnection operation connected to the sequencer (10),
When the switch (12) is turned on, the sequencer (10) excites the fourth solenoid valve (9) to stop the operation of the direct pressure amplifier (8) and stop the operation of the hydraulic cylinder (7). The operation of releasing the fastening of the cutter unit with respect to the die, the operation of the cylinder (5) is stopped by de-energizing the third solenoid valve (6), and the cutter lock ring (15) is driven to drive the cutter unit with respect to the die. It is configured to control the operation of releasing the lock and the operation of exciting the first and second solenoid valves (3b, 4) to operate the motor (1) and moving the cutter unit backward to disconnect it from the die. A device that automates the operation of separating the cutter unit from the die. A method for automating the connecting operation of a cutter unit to a die,
The cutter unit is driven by the first and second solenoid valves (3a, 4) that control the operation of the motor (1) for moving the cutter unit, and the cutter lock ring (15) for locking the cutter unit to the die. The third solenoid valve (6) for controlling the operation of the cylinder (5) to be operated, and the fourth solenoid valve for controlling the operation of the direct pressure amplifier for supplying hydraulic pressure to the hydraulic cylinder (7) for fastening the cutter unit to the die. (9), a sequencer (10) for controlling each of the solenoid valves (3a, 4, 6, 8), and a switch (11) for connecting operation connected to the sequencer (10),
When the switch (11) is turned on, the sequencer (10) excites the first and second solenoid valves (3a, 4) to operate the motor (1) and advance the cutter unit to connect it to the die. Operation and
An operation in which the sequencer (10) excites the third solenoid valve (6) to operate the cylinder (5), drives the cutter lock ring (15), and locks the cutter unit to the die;
The sequencer (10) includes deactivating the fourth solenoid valve (9) to activate the direct pressure amplifier (8) and actuate the hydraulic cylinder (7) to fasten the cutter unit to the die. A method for automating the connecting operation of a cutter unit to a die. A method for automating the cutting operation of a cutter unit with respect to a die,
The cutter unit is driven by the first and second solenoid valves (3b, 4) that control the operation of the motor (1) for moving the cutter unit, and the cutter lock ring (15) for locking the cutter unit to the die. The third solenoid valve (6) for controlling the operation of the cylinder (5) to be operated, and the fourth solenoid valve for controlling the operation of the direct pressure amplifier for supplying hydraulic pressure to the hydraulic cylinder (7) for fastening the cutter unit to the die. (9), a sequencer (10) for controlling each of the solenoid valves (3b, 4, 6, 8), and a disconnection switch (12) connected to the sequencer (10).
When the switch (12) is turned on, the sequencer (10) excites the fourth solenoid valve (9) to stop the operation of the direct pressure amplifier (8) and stop the operation of the hydraulic cylinder (7). Operation to release the fastening of the cutter unit to the die,
An operation in which the sequencer (10) de-energizes the third solenoid valve (6) to stop the operation of the cylinder (5) and drive the cutter lock ring (15) to unlock the cutter unit with respect to the die. ,
A cutter for a die, the sequencer (10) including an operation of exciting the first and second solenoid valves (3b, 4) to operate the motor (1) and moving the cutter unit backward to separate it from the die A method of automating unit disconnection.

Images