JP2020033171A - Protective sheet peeling device - Google Patents

Abstract

To provide a protective sheet peeling device capable of reducing consumption of an adhesive tape.SOLUTION: A protective sheet peeling device 1 comprises a reciprocating means 20 for drawing out a prescribed amount of an adhesive tape 2 from a supply unit 10, a take-up unit 30 for taking up the draw-out adhesive tape 2, and a control device 40 which can control the drive of the reciprocating means 20 and the take-up unit 30. Further, the take-up unit 30 comprises a take-up reel 32 around which the adhesive tape 2 is wound, and a torque motor 31 for rotationally driving the take-up reel 32. The torque motor 31 has a brake function for restricting the rotation of an output shaft 31a. The supply unit 10 is arranged so as to be in contact with brake means 50 for restricting the rotation of a supply reel 11 mounted to the supply unit 10, and the brake means 50 is connected to the control device 40.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a protective sheet peeling device that peels a protective sheet disposed on a work with an adhesive tape.

  A conventional protective sheet peeling device is disclosed in Patent Literature 1 and reciprocates moving means for feeding a roll-shaped adhesive tape from a reel rotatably supporting the roll, and the fed adhesive tape is moved up and down to adhere to the protective sheet. An actuator, a guide roller for sending the adhesive tape to which the protective sheet is adhered downstream, a speed control motor capable of driving the guide roller to rotate at a constant speed, and an adhesive tape sent downstream by the rotational drive of the speed control motor. And a torque motor that winds the sheet together with the protective sheet.

JP 11-208986 A

  However, the conventional protective sheet peeling device has to consume a predetermined amount of pressure-sensitive adhesive tape every time one protective sheet is peeled off. In addition, since the conventional protective sheet peeling device includes two motors, there is a problem that the manufacturing cost increases.

  The present invention is a supply unit to which a roll-shaped adhesive tape can be attached and is rotatable, reciprocating means capable of feeding out the adhesive tape from the supply unit, and a winding unit capable of winding the fed adhesive tape, In a protective sheet peeling device comprising a reciprocating means and a control device capable of controlling the drive of a winding unit, the winding unit rotates the winding reel for winding the adhesive tape, A driving torque motor, the torque motor having a brake function for restricting rotation of an output shaft thereof, and the supply unit being in contact with a brake means for restricting rotation of a supply reel attached thereto. And the brake means is connected to the control device. It is preferable that the control device controls the drive so as to operate the reciprocating means after the brake function of the torque motor is enabled. In addition, it is preferable that the control device controls the rotational driving of the torque motor until the torque reaches a preset torque after operating the brake means. Further, it is desirable that the torque motor be configured so that the brake function is disabled when power is supplied thereto, and is enabled when power is not supplied. Further, the control device is connected to a separately installed collecting device, collects the protection sheet adsorbed on the adhesive tape from the collecting device, and receives the collection completion signal, and receives the collection completion signal. It is preferable that the stored number of receptions is compared with a preset number of times, and if the numbers match, the rotational drive of the torque motor is executed.

  Since the protective sheet peeling device according to the present invention has a device configuration in which one torque motor as an example of a rotary drive source is mounted, the manufacturing cost can be reduced as compared with a conventional device having a plurality of motors. There is an advantage. Further, since the protective sheet peeling device according to the present invention activates the brake function and makes the take-up reel non-rotatable and then operates the reciprocating means, it is possible to feed out a predetermined amount of the adhesive tape from the rotatable supply reel. There is also an advantage that can be. Further, since the protective sheet peeling device according to the present invention drives the torque motor to rotate until the set torque is reached while operating the brake means to restrict the rotation of the supply reel, the protective sheet peeling device is loosened by the reciprocation of the reciprocating means. The adhesive tape can be stretched. Thereby, the protective sheet peeling device according to the present invention can be wound with a length corresponding to the feeding length of the pressure-sensitive adhesive tape fed from the supply reel, that is, the slack portion of the pressure-sensitive adhesive tape almost accurately. There is also an advantage that it is difficult to wind up excessively and wasteful consumption can be suppressed. In addition, since the protective sheet peeling device according to the present invention is equipped with a torque motor that determines whether the brake function is disabled or enabled depending on whether power is supplied or not, a special signal or the like for maintaining a locked state of the output shaft is required. There is also the advantage of not doing it. Furthermore, the protection sheet peeling device according to the present invention counts and stores a recovery completion signal indicating that the protection sheet has been recovered from a recovery device that removes and separately recovers the protection sheet of the work that has been peeled off. In addition, the stored number of times of reception and storage is compared with a preset number of times, and if the numbers match, the rotation of the take-up reel is executed, so that increasing the number of times reduces the adhesive strength of the adhesive tape to some extent. Until the tape is wound, it is possible to prevent the tape from being wound. Thus, the protective sheet peeling device according to the present invention also has an advantage that consumption of the adhesive tape can be further suppressed.

FIG. 1 is a schematic explanatory view showing a protective sheet peeling device according to the present invention. FIG. 2 is an operation explanatory view showing a state before operation of the protective sheet peeling device shown in FIG. 1. FIG. 3 is an operation explanatory diagram showing a state immediately after the operation proceeds from the state of FIG. 2 and the adhesive tape comes into contact with the protective sheet. FIG. 4 is an operation explanatory diagram showing a state where the operation has progressed from the state of FIG. 3 and the plate has started to move diagonally upward. FIG. 5 is an operation explanatory view showing a state in which the operation proceeds from the state of FIG. 4 and the protection sheet is completely peeled off from the work. FIG. 6 is an operation explanatory view showing a state in which the operation proceeds from the state of FIG. 5 and the reciprocating means is moved backward. FIG. 7 is an operation explanatory diagram showing a state in which the operation has progressed from the state of FIG. 6 and slack of the adhesive tape has been eliminated.

  The protective sheet peeling device 1 according to the present invention is configured to affix a thin protective sheet S to the adhesive surface 2a of the adhesive tape 2 and peel it off from the work W. As shown in FIGS. A supply unit 10 rotatably supported, reciprocating means 20 arranged to contact the non-adhesive surface 2b of the adhesive tape 2 and reciprocating; a winding unit 30 for winding the adhesive tape 2; And a control device 40 for controlling the driving of the moving means 20 and the winding unit 30.

  The supply unit 10, the reciprocating unit 20, the winding unit 30, and the later-described brake unit 50 are all disposed on a plate P attached to the tip of an articulated robot which is an example of a transfer unit. It is located above. The work W has a protective sheet S on its upper surface and is fixed by a clamp (not shown) or the like.

  The supply unit 10 includes a rotatable supply reel 11 attached to the plate P, a guide plate 12 for guiding the adhesive tape 2 fitted to the supply reel 11 so as not to come off from the side, and a guide plate 12. And a bolt 13 with a handle, which is attached to the side surface of the supply reel 11. In the vicinity of the supply unit 10, a brake means 50 capable of restricting the rotation of the adhesive tape 2 attached to the supply reel 11 is provided.

  The brake means 50 includes an air cylinder 51 attached to the plate P, a brake member 52 fixed to a movable portion of the air cylinder 51, and an electromagnetic valve 53 for switching a path of compressed air supplied to the air cylinder 51. Is provided. Further, a pressure reducing valve (not shown) may be arranged between the air cylinder 51 and the electromagnetic valve 53 so that the pressing force described later can be adjusted.

  The reciprocating means 20 includes a cylinder mount 23 fixed to the plate P, a linear motion cylinder 21 disposed on the cylinder mount 23 and capable of reciprocating, and a feeding mechanism fixed to a movable portion of the linear motion cylinder 21. A member 22 and an electromagnetic valve 24 for switching a path of compressed air to be supplied to the direct acting cylinder 21 are provided.

  The take-up unit 30 includes a take-up reel 32 for taking up the adhesive tape 2 fed from the supply reel 11, a torque motor 31 having an output shaft 31a connected to the take-up reel 32, The motor drive unit 33 detects the actual rotation speed and the actual torque of the output shaft 31a and performs feedback control.

  The torque motor 31 is fixed to the plate P via a hexagonal support 31b, and has a brake function that enables the output shaft 31a to be kept from rotating based on a command from the motor drive unit 33.

  The brake function is configured to be able to switch the validity / invalidity of the brake function by an input signal from the motor drive unit 33. When the brake function is valid, the output shaft 31a is in a non-rotatable state. Make it rotatable.

  Further, the input signal may be replaced with electric power required to rotationally drive the output shaft 31a. Thus, when the power supply to the torque motor 31 is performed, the brake function is disabled, and when the power is not supplied, the brake function is enabled and the output shaft 31a can be kept in the locked state. That is, since the input signal for switching the output shaft 31a to the rotatable state or the locked state is the electric power for performing not only the switching of the brake function but also the rotation driving of the output shaft, the input signal related to the control of the torque motor 31 is controlled. There is also an advantage that the number can be reduced.

  The motor driving unit 33 is configured to be able to transmit the measured rotation speed and the measured torque of the output shaft 31 a transmitted from the torque motor 31 to the control device 40, and to perform various settings preset in the control device 40. The torque motor 31 can be feedback-controlled based on the value.

  The controller 40 connects the solenoid valve 24 of the reciprocating means 20 and the solenoid valve 53 of the brake means 50, connects the motor drive unit 33 of the winding unit 30, and attaches the plate P to the articulated robot. And a recovery device (not shown).

  The recovery device is configured to peel off the protection sheet S adhered to the adhesive tape 2 and separated from the work W from the adhesive tape 2 and separately collect the protection sheet S. When the collection of the protection sheet S is completed, A collection completion signal is transmitted to the control device 40.

  Further, the control device 40 includes a setting information section storing various setting information such as a set rotation speed and a set torque necessary for drive control of the torque motor 31, the reciprocating movement means 20, the winding unit 30, An operation program unit that stores an operation program such as the brake unit 50; a storage unit that receives and stores a signal output from the collection device or the like; a reciprocating unit 20 or the articulated robot based on the operation program And a command unit for sending an operation command to the control unit.

  The storage unit is capable of storing the number of times the collection completion signal has been received, and the command unit is connected to a setting information unit, an operation program unit, and a storage unit, and is also provided in the winding unit 30 and the collection device. Be connected. The setting information section stores a preset number of times set in advance to be compared with the number of receptions, and the set torque set therein receives the pressing force of the brake means 50 in FIG. The torque required for winding the adhesive tape 2 is higher than the torque required for winding the adhesive tape 2 in a slack state, and the torque required for winding the adhesive tape 2 after the slack is eliminated while receiving the pressing force of the brake means 50 in FIG. Is also set to a low value.

  The operation of the protective sheet peeling device 1 according to the present invention thus configured will be described below. First, the protection sheet peeling device 1 is always located above the protection sheet S covered on the work W, as shown in FIGS. 1 and 2, and the brake means 50 causes the brake member 52 to retract, The reciprocating means 20 protrudes the feeding member 22 downward, and the braking function of the winding unit 30 is effective.

  From here, a start signal is transmitted to the command section by a button operation of an operator (not shown), and the command section starts processing the operation program of the operation program section and operates the electromagnetic valve 53 of the brake means 50. Send a command. Thereby, the brake member 52 is brought into the protruding state shown in FIG. 3 from the retracted state, comes into contact with the adhesive tape 2, and presses the outer periphery of the adhesive tape 2 with a predetermined pressing force. Therefore, the rotation of the supply reel 11 that has been rotatable until now is restricted according to the degree of pressing of the brake member 52, and is not a state in which the supply reel 11 is completely locked and cannot be rotated.

  As described above, if the brake member 52 is protruded from the state shown in FIGS. 1 and 2 and the rotation of the supply reel 11 is restricted, a lowering operation command is issued from the command unit to the articulated robot. The articulated robot receiving this moves the plate P down from the position shown in FIGS. 1 and 2 to the position shown in FIG. 3, and places the protective sheet S on the adhesive surface 2a of the adhesive tape 2 located at the tip of the feeding member 22. Abut.

  Thereafter, the articulated robot sequentially moves the plate P diagonally upward and finishes moving the plate P to the position shown in FIG. 5, completely removes the protection sheet S from the work W, and completes the movement to the command unit. Send a signal.

  The command unit sends an operation start command to the collection device. Upon completion of collecting the protection sheet S in a state shown in FIG. 5 to another place (not shown), the collection device sends a collection completion signal to the command unit.

  Here, the command unit counts the collection completion signal received so far, and writes the number of reception times, which is the count number, to the storage unit, and sets the number of reception times and the set number of times stored in the setting information unit. Are compared to determine whether they match.

  The command unit sends an operation command to the electromagnetic valve 24 to reset the number of receptions and move the direct-acting cylinder 21 when the results of the determination are the same. As a result, the feeding member 22 rises, and the adhesive tape 2 is loosened as shown in FIG. After the return of the direct acting cylinder 21, the command unit disables the brake function and sends a command to the motor driving unit 33 to rotate the torque motor 31 based on the set torque stored in the setting information unit.

  The torque motor 31 starts to collect the loosened adhesive tape 2 on the take-up reel 32 side, and gradually changes from the loosened state in FIG. 6 to the loosened state in FIG. Drive until it reaches. Thus, the protective sheet peeling device 1 according to the present invention stops the rotation of the torque motor 31 immediately after the loosening of the adhesive tape 2 is eliminated, so that excessive consumption of the adhesive tape 2 can be suppressed.

  On the other hand, when the above-described determination results do not match, the command unit sends an operation command to the articulated robot without resetting the number of receptions, moves the plate P to the position shown in FIG. 2, and prepares for the next operation. Thereby, since the protective sheet peeling device 1 according to the present invention does not feed out the adhesive tape every time the protective sheet S is peeled from the work W, there is also an advantage that the consumption of the adhesive tape can be further suppressed.

DESCRIPTION OF SYMBOLS 1 ... Protective sheet peeling apparatus 2 ... Adhesive tape 10 ... Supply unit 20 ... Reciprocating movement means 30 ... Winding unit 31 ... Torque motor 40 ... Control device 50 ... Brake means S ... Protective sheet W ... Work

Claims (5)

A supply unit to which a roll-shaped adhesive tape can be attached and rotatable; reciprocating means for feeding the adhesive tape from the supply unit; a winding unit for winding the fed adhesive tape; and the reciprocating means And a control device capable of driving and controlling the winding unit.
The winding unit includes a winding reel that winds the adhesive tape, and a torque motor that rotationally drives the winding reel,
The torque motor has a brake function for regulating the rotation of its output shaft,
The supply unit is disposed so as to be in contact with brake means for restricting rotation of a supply reel attached to the supply unit,
The protective sheet peeling device, wherein the brake means is connected to the control device.   2. The protective sheet peeling device according to claim 1, wherein the control device controls the driving of the reciprocating unit after activating the braking function of the torque motor. 3.   3. The protective sheet peeling device according to claim 1, wherein the control device controls the rotational driving of the torque motor until the torque reaches a preset torque after operating the brake device. 4. apparatus.   4. The torque motor according to claim 1, wherein the brake function is disabled when power is supplied to the torque motor, and is enabled when power is not supplied. 5. Protective sheet peeling device.   The control device is configured by connecting a separately installed collecting device, collects the protective sheet adsorbed on the adhesive tape from the collecting device, and upon receiving the collecting completion signal, stores the number of times of receiving the collecting completion signal. 5. The method according to claim 1, wherein the stored number of receptions is compared with a preset number of times, and if the numbers match, the rotational driving of the torque motor is executed. The protective sheet peeling device according to any one of the above.

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