JP2013200214A - Rolling mechanism of self-guided laser irradiator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser irradiator with rolling mechanism, having an extremely simple configuration.SOLUTION: The rolling mechanism is formed by vertically stacking and arranging three spinning disks of a rough motion spinning disk 31, a rough motion gear disk 33, and a micromotion spinning disk 40, so as to suppress a height-directional dimension of a storage space of the rolling mechanism formed of a bottom wall 21 and a side wall 22 and decrease the number of components. Consequently, this configuration can reduce the height-directional dimension of a laser irradiator so as to miniaturize the size and further, the cost can be reduced by the decrease in the number of components.

Description

  The present invention relates to a rotation mechanism of an automatically guided laser irradiator used in construction work or civil engineering work, and the laser irradiator is rotated quickly and accurately so as to be directed in a direction to be irradiated. To do.

  In the so-called laser marking device that outputs and displays laser lines on the side wall surface, ceiling surface, floor surface, etc. of the structure, the lower end of the irradiator body is rotated so that the output laser line can be irradiated over 360 °. The mechanism is built in, and after installing the laser marking device, the operator manually rotates the irradiator body roughly manually with this rotating mechanism, and further precisely adjusts to the target location by fine adjustment The ink is put out through the procedure of making it happen. In such a marking operation, the laser irradiator is rotated by remote control, and if the laser line output from the laser irradiator is detected by a light receiver arranged in advance at the target position, the irradiator is rotated. An automatic guidance type laser irradiator device that automatically stops the operation is known.

  In the automatic induction type laser irradiator device, a device in which a rotation mechanism is devised so that an extra load is not applied to a drive system such as a drive motor when the laser irradiator is manually rotated has been proposed (for example, Patent Document 1).

JP 2006-215019 A (Claim 1 and FIG. 2)

  The technique disclosed in Patent Document 1 described above is a manual rotating ring that, as a rotating mechanism, supports a laser irradiator by directly connecting the laser irradiator and manually rotates the laser irradiator to perform rough positioning. , Automatic rotating ring that rotates the laser irradiator at high speed with a DC motor together with the manual rotating ring, helical gear for rotating the automatic rotating ring, manual fine movement ring that rotates very slightly, and rotating at low speed by a stepping motor It is an automatic fine movement ring that is finely moved and is laminated from the top to the bottom. By applying manual force only to the manual rotation ring, no load is applied to the drive system. . However, since the rotating mechanism of the above technique has five rotating disks stacked in the vertical direction, the storage space for storing the rotating mechanism becomes large, resulting in an increase in the size of the laser irradiator and a large number of parts and cost. There was a disadvantage that it became high.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a laser irradiator including a rotation mechanism having a very simple structure.

  In order to solve the above-described problem, the configuration adopted by the invention according to claim 1 will be described with reference to the drawings. As shown in FIGS. 1 to 4, the laser irradiation unit 4 can be mounted and fixed and rotated. The rotating mechanism of the automatic induction type laser irradiator 1 held by the rotating mechanism includes a bottom wall 21 and a side wall 22 that rises from the periphery of the bottom wall 21, and defines a storage space inside thereof. The pedestal main body 20 and a plurality of turntables 31 and 40 that are stacked in the storage space in the pedestal main body 20 and can be rotated individually, and the plurality of turntables 31 and 40 are provided with the laser irradiation. The coarse motion rotary disk 31 that is directly connected to the unit 4 to support the laser irradiation unit 4 and performs rough positioning by rotating the laser irradiation unit 4 manually or electrically, and the coarse motion rotary disk 31 A coarse gear wheel 33 that is in contact with the part, and a fine gear wheel 40 that is in contact with the lower part of the coarse gear wheel 33 and rotates the laser irradiation unit 4 manually or electrically for fine positioning. The fine movement rotating plate 40 includes a coarse movement motor 44 that coarsely rotates the coarse movement rotary plate 31 via the coarse movement gear plate 33, and a fine movement motor 48 that finely moves the fine movement rotary plate 40. The fine movement rotating plate 40 is urged in one rotation direction by the urging spring 62 to fix the screw male screw 49 to the rotating shaft of the fine motor 48 and to the screw male screw 49. The female thread member 51 is screwed together, and is always in contact with the contact surface 52 on the opposite side of the threaded portion of the screw female thread member 51 by the biasing force of the biasing spring 62 and the fine adjustment knob 29 is manually operated. By making the fine turntable A fine shaft screw 28 for finely moving 0 is provided on the pedestal main body 20, and when the laser irradiation unit 4 is manually rotated, a slip occurs between the coarse motion rotary plate 31 and the coarse motion gear plate 34. The laser irradiation unit 4 can be manually coarsely rotated without applying a load to the coarse motor 44, and when the coarse motor 44 is rotationally driven, the coarse gear wheel 33 and the coarse gear wheel 33 are rotated. The laser irradiation unit 4 can be electrically coarsely rotated by a frictional force with the dynamic rotating disk 31, and when the fine adjustment knob 29 is manually operated, the fine adjustment shaft screw 28 is in contact with the contact surface 52. The fine movement rotary disk 40 is finely moved by the urging force of the urging spring 62 by abutting, and the coarse gear wheel board 33 and the coarse movement located above the fine movement rotary disk 40. The rotating plate 31 can be rotated together to finely rotate the laser irradiation unit 4 manually. On the other hand, when the fine movement motor 48 is driven to rotate, the screwing male screw 49 and the screwing female screw 51 The fine rotation rotating disk 40 is finely moved by the urging force of the urging spring 62 and the coarse gear wheel 33 and the coarse rotation rotating disk 31 positioned above the fine movement rotating disk 40 are rotated together. The laser irradiation unit 4 can be electrically finely rotated.

  Further, the configuration adopted by the invention according to claim 2 will be described with reference to the drawings. As shown in FIG. 2, there is a certain viscosity between the coarse rotary wheel 31 and the coarse gear wheel 33. The viscosity of the grease is set so that the grease resistance when the laser irradiation unit 4 is manually rotated is weaker than the torque of the coarse motor 44.

  In the invention according to the first aspect, since the rotary mechanism is formed by laminating and arranging the three rotary disks, the coarse rotary disk 31, the coarse gear wheel 33, and the fine rotary disk 40, in the vertical direction, the bottom wall 21 and the side wall 22 are provided. The size in the height direction of the storage space of the rotation mechanism formed by can be suppressed and the number of parts can be reduced, and as a result, the size in the height direction of the laser irradiator can be reduced. The cost can be reduced by reducing the number of parts.

  In the invention according to claim 2, the grease viscosity is set so that the grease resistance when the laser irradiation unit 4 is manually rotated is weaker than the torque of the coarse motor 44. Even if the coarse motion rotating disk 31 rotates with the rotation, the coarse gear wheel board 33 slips and does not rotate, and the load on the coarse motor 44 can be reduced.

It is a disassembled perspective view of the laser irradiator which concerns on this embodiment. It is a disassembled perspective view of the base unit of a laser irradiator. It is a disassembled perspective view which shows the structure of a fine movement rotary disk. It is a perspective view which shows the internal structure after the assembly | attachment of a base unit.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of the laser irradiator according to the present embodiment. In the figure, a laser irradiator 1 includes a laser irradiation unit 4 that irradiates a vertical laser line and a horizontal laser line, and a laser irradiation unit 4 that is mounted manually and electrically. It is composed of a pedestal unit 5 in which a rotating mechanism for rotation is incorporated, and a main body cover 2 that covers the laser irradiation unit 4. A rubber ring 3 is attached to the lower end of the main body cover 2 so as to cover the mounting portion of the main body cover 2 when the main body cover 2 is attached to the laser irradiation unit 4 with screws (not shown).

  In each of the above configurations, as shown in FIG. 1, the main body cover 2 is formed with four vertically long vertical laser irradiation windows 10 at intervals of 90 degrees on the upper portion thereof, and horizontally long on the opposite side in the front and rear. These two horizontal laser irradiation windows 11 are formed. A battery housing case 12 for housing a power battery for driving the laser irradiator 1 is attached to the side surface of the main body lever 2, and a notch window 13 facing a power switch 17 provided in the laser irradiation unit 4 is formed. Further, when carrying the laser irradiator 1, a hand-held band 14 for attaching a hand is attached.

  As shown in FIG. 1, the laser irradiation unit 4 includes a vertical laser oscillator 15 for irradiating a vertical laser line from the vertical laser irradiation window 10, and a horizontal laser from the horizontal laser irradiation window 11. A horizontal laser oscillator 16 for irradiating the line and a power switch 17 for starting driving the laser irradiator 1 are provided.

  The laser irradiation unit 4 configured as described above is directly connected and fixed by a screw to a coarse rotation rotating disk 31 (described later) provided on the pedestal main body 20 of the pedestal unit 5, and then covers and covers the main body cover 2. The screw hole (not shown) formed at the lower end of 2 and the screw hole (not shown) formed at the lower end of the laser irradiation unit 4 are aligned with each other. The assembly of the laser irradiator 1 is completed by assembling the laser irradiation unit 4 including the main body cover 2 and the pedestal unit 5 while covering the fastening portion with the rubber ring 3. In this specification, when it is expressed that the laser irradiation unit 4 is rotated, the laser irradiation unit 4 covered with the main body cover 2 is often referred to.

  By the way, the pedestal unit 5 to which the laser irradiation unit 4 including the main body cover 2 is attached is assembled in advance. The pedestal unit 5 includes a bottom wall 21 and the bottom wall as shown in FIG. A pedestal main body 20 having a side wall 22 rising from the periphery of 21 and defining a storage space inside thereof, and a plurality of turntables 31 that are stacked in the storage space within the pedestal main body 20 and can be rotated individually. , 33, and 40, and a plurality of tripods 24 (three tripods in the case of illustration) for supporting the laser irradiator 1 are attached to the back surface of the pedestal main body 20. Each of the tripods 24 has a height adjusting function and can adjust and hold the laser irradiator 1 horizontally while looking at a level provided outside the upper surface of the main body cover 2. The pedestal main body 20 and the plurality of turntables 31, 33, 40 constitute the rotation mechanism of the present invention.

  On the bottom wall 21 of the pedestal main body 20, a shaft 23 is erected substantially at the center thereof, and two notch openings 25 and 26 are opened across the shaft 23. A plurality of turntables 31, 33, and 40 are pivotally supported on the shaft 23, and a male screw portion is formed at an upper end portion thereof, and the plurality of turntables 31, 33 are formed on the male screw portion. , 40 are fixedly supported so that they do not fall off the shaft 23 by screwing the set screw 35 with the rotary shaft supported. In addition, the notch openings 25 and 26 receive a part of a coarse motion motor 44 and a fine motion motor 48, which will be described later, and project to the back side of the bottom wall 21.

  The pedestal body 20 has a fine shaft mounting screw hole 27 formed in the side wall 22 on the side of the notch opening 26 that receives a part of the fine movement motor 48, and the fine shaft screw 28 is screwed into the fine shaft mounting screw hole 27. The The fine adjustment shaft screw 28 is formed with a male screw portion on the outer periphery so as to be screwed into a female screw portion formed on the inner periphery of the fine adjustment shaft mounting screw hole 27, and a fine adjustment knob 29 is fixed to the outer end portion thereof. ing. By rotating the fine adjustment knob 29, the fine adjustment shaft screw 28 advances and retreats with respect to the side wall 22 while being screwed into the fine adjustment shaft mounting screw hole 27, and the other end of the fine adjustment shaft screw 28 is a screwed female screw member 51 described later. The fine movement rotary disk 40 is rotated by manual fine movement while always in contact with the contact surface 52.

  Further, a main board 30 for controlling the automatic guidance function is fixed to the bottom wall 21 on the side of the shaft 23 in the base body 20. The main board 30 irradiates a laser line from the vertical laser oscillator 15 by turning on the power switch 17 and receives a communication signal from a receiving device (not shown) for receiving the laser line. The rotation is controlled by the sensor 71 so that the coarse movement motor 44 or the fine movement motor 48 is rotationally controlled based on the reception, and the rotation mechanism is automatically controlled so that the laser line coincides with a predetermined measurement position. A selection switch for selecting whether or not to irradiate a laser line from either one or both of the vertical laser oscillator 15 and the horizontal laser oscillator 16 in addition to the above-described level, though not shown, A laser oscillation mode switch or the like is provided. In this embodiment, the power switch 17 is turned on and the main substrate 30 is controlled to irradiate the laser line from the laser oscillators 15 and 16 and to drive and control the rotation mechanism. May be provided in the laser irradiation unit 4 and a switch and a control circuit board for driving and controlling the rotation mechanism may be separately provided in the base body 20.

  Further, as a plurality of rotating disks inserted through the shaft 23 of the pedestal main body 20, the laser irradiation unit 4 is directly connected to the uppermost portion to support the laser irradiation unit 4, and the laser irradiation unit 4 is rotated manually or electrically. The coarse rotating wheel 31 for rough positioning, the coarse gear wheel 33 that is in contact with the lower part of the coarse rotating wheel 31, and the laser irradiation that is in contact with the lower part of the coarse gear wheel 33 There is a fine-movement rotating plate 40 that performs fine positioning by rotating the unit 4 manually or electrically. Coarse rotary disk 31, coarse gear wheel 33, and fine rotary disk 40 are provided with shaft holes 32, 34, and 41, respectively, and after the shaft holes 32, 34, and 41 are loosely fitted to shaft 23, they are stopped. By screwing the screws 35, the coarse motion rotary disk 31, the coarse motion gear board 33, and the fine motion rotary disk 40 are rotatably supported so as not to fall off the shaft 23. And between the coarse motion rotating disk 31 and the coarse motion gear board 33, grease having a certain viscosity is applied. The viscosity of the grease is set so that the grease resistance when the laser irradiation unit 4 is manually rotated is weaker than the torque of the coarse motion motor 44.

  The upper portion of the pedestal main body 20 is covered with a lid cover 36 having a circular opening window 37. The opening window 37 of the lid cover 36 is opened to connect the laser irradiation unit 4 and the coarse motion rotary disk 31 and, as described above, below the laser irradiation unit 4 before being covered with the main body cover 2. The laser irradiation unit 4 is formed by aligning a screw hole (not shown) formed on the end face with a screw hole (not shown) shown in FIG. And coarse motion rotating disk 31 are coupled. Therefore, when the laser irradiation unit 4 including the main body cover 2 is manually rotated, the coarse motion rotary disk 31 is also rotated. However, although grease having a certain viscosity is applied between the coarse motion rotary disk 31 and the coarse gear wheel board 33, the resistance due to the viscosity of the grease is smaller than the torque of the coarse motor 44. Thus, the coarse gear wheel 33 that meshes with the gear 45 fixed to the rotation shaft of the coarse motor 44 does not rotate with the manual rotation of the coarse roller 31, and the coarse gear Slip occurs between the board 33 and the coarse rotary disk 31. For this reason, the load accompanying the manual rotation of the laser irradiation unit 4 does not significantly affect the drive source such as the coarse motion motor 44, and the load on the coarse motion motor 44 can be reduced.

  On the contrary, when the coarse motor 44 is driven to rotate, the coarse gear wheel 33 is rotated by the meshing of the gear 45 fixed to the rotation shaft of the coarse motor 44 and the coarse gear wheel 33, and the coarse gear gear is rotated. The coarse motion rotating disk 31 mounted on the upper portion of the panel 33 is also rotated by frictional force (friction force corresponding to the viscosity resistance of grease), and the laser irradiation unit 4 connected to the coarse motion rotating disk 31 is also electrically roughened. It will rotate dynamically. Note that the coarse motion motor 44 uses a stepping motor that can rotate forward and reverse, and can rotate the laser irradiation unit 4 at a relatively high speed.

  Next, the detailed structure of the fine-motion rotating disc 40 that is in contact with the lower portion of the coarse gear plate 33 and is rotatably supported by the shaft 23 will be described with reference to FIGS. The fine movement rotary disk 40 is provided with a coarse movement motor 44 that coarsely rotates the coarse movement rotary disk 31 via the coarse movement gear board 33, and a fine movement motor 48 that finely moves the fine movement rotary disk 40. More specifically, the fine rotation rotating plate 40 has a shaft hole 41 through which the shaft 23 is inserted at the center thereof, and a mounting contact that contacts the lower surface of the coarse gear wheel plate 33 on the outer periphery of the shaft hole 41. The surface 42 is formed to be slightly raised, and a coarse motor mounting portion 43 for attaching the coarse motor 44 is provided on one side of the mounting contact surface 42, and the coarse motor mounting portion 43. A fine movement motor attachment portion 47 for attaching the fine movement motor 48 is extended on the opposite side. Further, a sensor unit mounting portion 60 and a spring mounting portion 61 are extended to the side of the mounting contact surface 42 in a direction orthogonal to the line connecting the coarse motor mounting portion 43 and the fine motor mounting portion 47. A rotational position detection unit 56, which will be described later, is attached to the sensor unit attaching part 60 by screws 59, and one end of a biasing spring 62, which will be described later, is fixed to the spring attaching part 61. The fine movement motor 48 uses a stepping motor that can rotate forward and backward, and can rotate the laser irradiation unit 4 at a relatively low speed.

  In the state where the coarse motor 44 is attached to the coarse motor mounting portion 43 with the screw 46, the coarse motor 44 is attached so that the main body portion protrudes below the fine motion rotary disk 40, and the coarse motor 44 rotates. A gear 45 fixed to the shaft is positioned above the fine rotation rotating disk 40. Further, in a state where the fine movement motor 48 is attached to the fine movement motor mounting portion 47 with the screw 50, the screwed male screw 49 fixed to the rotating shaft of the fine movement motor 48 is attached so as to face in the horizontal direction. A screwed female screw member 51 is screwed onto the screwed male screw 49. The screwed female screw member 51 has a contact surface 52 formed on the opposite side of the screwed portion, and a detection piece 53 extending in a direction orthogonal to the screwed portion. An engagement groove 54 that engages with an engagement rod 55 that is erected on the fine movement rotary disk 40 is formed so as to be parallel to the screwing portion. The detection piece 53 is detected by a pair of light projecting / receiving sensors 57 and 58 provided in a rotational position detection unit 56 attached to the sensor unit attachment portion 60 by screws 59. That is, as shown in FIGS. 3 and 4, the light projecting / receiving sensors 57 and 58 provided in the rotational position detecting unit 56 are provided with light projecting / receiving sensors each composed of a projector and a light receiver vertically separated from each other by a predetermined distance. The degree of screwing between the screwed male screw 49 and the screwed female screw member 51 by the rotational drive of the fine motor 48 by detecting that the detection piece 53 has entered between the upper and lower light projectors and the light receiver. An upper limit and a lower limit are detected.

  The fine rotation rotating disk 40 configured as described above is inserted into the shaft 23, and the coarse movement gear disk 33 and the coarse movement rotating disk 31 are sequentially inserted into the shaft 23 so as to be placed in contact with the upper part thereof, and further, a set screw. When 35 is screwed to the upper end of the shaft 23, a part of the coarse motor 44 provided on the fine movement rotating disk 40 projects from the notch opening 25 to the back side of the bottom wall 21, and a part of the fine movement motor 48 is notched 26. Then, the gear 45 that protrudes from the rear wall of the bottom wall 21 and is fixed to the rotating shaft of the coarse motor 44 is engaged with the coarse gear board 33. Then, as shown in FIG. 4, one end of the biasing spring 62 is locked to the spring mounting portion 61 of the fine gear wheel board 40, and the other end of the biasing spring 62 is locked to the spring mounting portion 63 of the bottom wall 21. . With the biasing spring 62 attached in this way, the contact surface 52 of the threaded female screw member 51 is in the state where the fine adjustment knob 29 is most loosened (the fine adjustment shaft screw 28 is retracted from the storage space). The urging spring 62 constantly urges the fine movement rotating disk 40 in one rotation direction (clockwise rotation in FIG. 4) so as to maintain a state where the fine adjustment shaft screw 28 is in contact with the fine adjustment shaft screw 28. Of course, even when the fine adjustment knob 29 is most tightened (the fine adjustment shaft screw 28 is inserted from the storage space), the contact surface 52 of the threaded female screw member 51 and the fine adjustment shaft screw 28 are in contact with each other. Thus, the biasing spring 62 constantly biases the fine movement rotating disk 40 in one rotation direction (clockwise rotation in FIG. 4).

  Returning to FIG. 2, a sensor attachment bottom cover 70 is attached to the back side of the base body 20. A plurality of (six in the illustrated example) communication sensors 71 are mounted inside the sensor mounting bottom cover 70 at equal intervals, and the front surface position where the communication sensors 71 are provided is indicated by a transparent window 72. It is covered. Thus, the communication sensor 71 receives a communication signal from a receiver (not shown) that receives the laser line emitted from the vertical laser oscillator 15, and based on the reception, the coarse motion motor 44 or The rotation of the fine motor 48 is controlled to automatically control the rotation mechanism so that the laser line coincides with a predetermined measurement position.

  Up to this point, the configuration of the laser irradiator 1 according to the present embodiment has been described, but a receiving device (also referred to as a “receiver”) used corresponding to the laser irradiator 1 is cited as a prior art document. A device having the same structure and function as those of the receiving apparatus shown in FIGS. 3 and 9 of JP-A-2006-215019 is used. That is, the receiving device has a light receiving sensor unit, and the light receiving sensor unit includes light receiving elements arranged on the left and right sides, and the vertical laser line output from the laser irradiator 1 is the center of the light receiving sensor unit. Adjustment (position alignment) is performed by rotating the laser irradiator 1 with a rotating mechanism so as to match the part. When the vertical laser line irradiated to the light receiving sensor part of the receiving device enters the right light receiving element, the rotation mechanism is driven to receive a command signal that moves to the left so as to come to the center (convergence point) of the light receiving sensor part. While transmitting from the transmitter of the apparatus to the communication sensor 71 of the rotating mechanism, when the vertical laser line irradiated to the light receiving sensor portion enters the left light receiving element, the rotating mechanism is driven to center the light receiving sensor portion. A command signal that moves to the right side so that the vertical laser line comes to (convergence point) is transmitted from the transmitter of the receiving device to the communication sensor 71 of the rotating mechanism.

  The configuration of the laser irradiator 1 according to the embodiment has been described above. In this laser irradiator 1, when the laser irradiation unit 4 including the main body cover 2 is manually rotated, The laser irradiation unit 4 can be manually coarse-rotated by rotating only the coarse-rotation rotary plate 31 without causing a load on the coarse-motion motor 44 due to slippage between the coarse-gear gear plate 34. Further, when the coarse motor 44 is rotationally driven, the coarse gear wheel 33 is rotated by meshing the gear 45 of the coarse motor 44 and the coarse gear wheel 33, and the rotation of the coarse gear wheel 33 is rotated with the coarse gear wheel 33. The laser irradiation unit 4 can be electrically coarse-rotated by being transmitted to the coarse-motion rotary disk 31 by a frictional force with the coarse-motion rotary disk 31. On the other hand, when the fine adjustment knob 29 is operated manually, the fine adjustment shaft screw 28 comes into contact with the contact surface 52 of the threaded female screw member 51, so that the fine movement rotary disk 40 is moved to any one by the urging force of the urging spring 62. Can be finely rotated in the direction of. At this time, it is possible to rotate the laser irradiation unit 4 manually and finely by rotating the coarse gear wheel 33 and the coarse gear wheel 31 positioned above the fine motion rotary disk 40 together. Further, when the fine movement motor 48 is driven to rotate, the fine movement rotary disk 40 is moved in either direction (vertical laser) by the biasing force of the biasing spring 62 depending on the degree of screwing between the screwing male screw 49 and the screwing female screw 51. The line can be finely rotated in a direction in which the line coincides with the center of the light receiving sensor portion of the light receiving device. At this time, it is possible to rotate the laser irradiation unit 4 by finely rotating the laser irradiation unit 4 by rotating together the coarse gear wheel 33 and the coarse gear wheel 31 located above the fine wheel 40. When the upper and lower limits of the degree of screwing between the screwed male screw 49 and the screwed female screw 51 based on the rotation of the fine movement motor 48 are detected by the light emitting / receiving sensors 57 and 58, the upper limit or the lower limit of the coarse motor 44 is set. After rotating in the releasing direction, the fine movement motor 48 is rotated to automatically remove the upper limit or lower limit position.

  Further, in the present embodiment, when grease having a certain viscosity is applied between the coarse rotating wheel 31 and the coarse gear wheel 33 and the laser irradiation unit 4 including the main body cover 2 is manually rotated. Since the grease viscosity is set so that the grease resistance is weaker than the torque of the coarse motion motor 44, the coarse motion rotating plate 31 rotates with the rotation of the laser irradiation unit 4 including the main body cover 2. The gear board 33 slips and does not rotate, and the load on the coarse motor 44 can be reduced.

DESCRIPTION OF SYMBOLS 1 Laser irradiation device 2 Main body cover 4 Laser irradiation unit 5 Base unit 20 Base body 21 Bottom wall 22 Side wall 23 Axis 27 Fine shaft mounting screw hole 28 Fine shaft screw 29 Fine control knob 31 Coarse rotation rotating board 33 Coarse movement gear board 40 Fine rotation Panel 44 Coarse motor 48 Fine motor 49 Screwed male screw 51 Screwed female screw member 52 Contact surface 62 Biasing spring

Claims (2)

A rotation mechanism of an automatic induction type laser irradiator that holds a laser irradiation unit mounted and fixed rotatably,
The rotating mechanism includes a base body having a bottom wall and a side wall rising from the periphery of the bottom wall, and defining a storage space inside thereof, and is stacked in the storage space in the base body and rotated individually. It consists of several possible turntables,
The plurality of turntables are directly connected to the laser irradiation unit to support the laser irradiation unit and rotate the laser irradiation unit manually or electrically to perform rough positioning; and the coarse movement A coarse gear wheel that is in contact with the lower part of the rotary disk, and a fine wheel that is in contact with the lower part of the coarse gear wheel and rotates the laser irradiation unit manually or electrically to perform fine positioning; Consists of
The fine rotation rotating disk is provided with a coarse movement motor for coarsely rotating the coarse movement rotating disk via the coarse gear wheel board, and a fine movement motor for finely moving the fine movement rotating disk, and the fine movement rotating disk Is energized in one rotation direction by an energizing spring,
A screwed male screw is fixed to the rotating shaft of the fine movement motor, and a screwed female screw member is screwed into the screwed male screw, and a contact surface opposite to the screwed portion of the screwed female screw member is formed. The pedestal main body is provided with a fine adjustment shaft screw that is always in contact with the urging force of the urging spring and finely moves the fine adjustment rotary disk by manually operating a fine adjustment knob.
When the laser irradiation unit is manually rotated, slippage occurs between the coarse motion rotary disk and the coarse gear wheel and the laser irradiation unit is manually moved without applying a load to the coarse motor. On the other hand, when the coarse motor is rotated, the laser irradiation unit can be electrically coarse-rotated by the frictional force between the coarse gear wheel and the coarse rotary disk. ,
When the fine adjustment knob is manually operated, the fine adjustment shaft screw is brought into contact with the abutting surface, so that the fine movement rotating plate is finely moved by the urging force of the urging spring and is located on the upper portion of the fine adjustment rotating plate. While the coarse gear wheel and the coarse rotary plate can be rotated together to manually fine-rotate the laser irradiation unit, when the fine motor is driven to rotate, the threaded male screw and the screw are rotated. The fine movement rotating disk is finely moved by the urging force of the urging spring by being screwed with a female screw, and the coarse gear wheel board and the coarse rotating disk located above the fine movement rotating disk are also rotated together. A rotation mechanism of an automatic induction type laser irradiator, wherein the laser irradiation unit can be electrically finely rotated.   Grease having a certain viscosity is applied between the coarse rotating wheel and the coarse gear wheel, and the grease resistance when the laser irradiation unit is manually rotated is weaker than the torque of the coarse motor. The rotation mechanism of the automatic induction type laser irradiator according to claim 1, wherein the viscosity of the grease is set as described above.

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