JP4257536B2 - Inking machine - Google Patents

Description

  The present invention relates to an inking device that diffuses a light beam from a light source such as a semiconductor laser in only one direction and irradiates a target surface with vertical or horizontal line light, and particularly to an impact absorbing structure thereof. It is.

  In a construction site, an optical marking device that irradiates vertical line light or horizontal line light, which is a reference for verticality and horizontality of an object such as a column or a wall, is used. The light source of the optical marking device is mostly a semiconductor laser, and is generally called a laser marking device. The laser marking device suspends a swinging member in a pendulum shape so that it can always take a vertical posture by a mechanism called a gimbal mechanism or a gyro mechanism, and supports the light source unit including the semiconductor laser by the swinging member. is doing. The light source unit includes a semiconductor laser as a light source, a collimating lens that converts divergent light emitted from the semiconductor laser into a parallel light beam, and a rod lens that diffuses the parallel light beam only in one direction. The parallel light flux is incident on the rod lens from a direction orthogonal to the central axis thereof, and is refracted by the rod lens and diffused in a fan shape only in a direction orthogonal to the central axis. By irradiating the diffused light onto the wall surface, ceiling surface, floor surface, etc. of the building, a linear line by light can be drawn. Therefore, the line light in the vertical direction can be irradiated by attaching the light source unit to the rocking member so that the central axis of the rod lens is horizontal. Moreover, horizontal line light can be irradiated by attaching the light source unit to the swing member so that the central axis of the rod lens is vertical. The above is the principle of the laser marking device.

  In the laser marking device, as described above, the swinging member that supports the light source unit is supported by the gimbal mechanism or the gyro mechanism so as to be swingable. The laser marking device needs to irradiate vertical or horizontal line light with high accuracy. For this purpose, it is desired that the frictional resistance of the gimbal mechanism or the gyro mechanism is as small as possible. Therefore, the bearing portion of the gimbal mechanism or gyro mechanism is generally composed mainly of a ball bearing and a shaft rotatably supported by the ball bearing. However, the ball bearing used for the gimbal mechanism or gyro mechanism of the laser marking device is selected to have as small a frictional resistance as possible, and there is a problem in impact resistance. Therefore, there is a problem that even if the laser marking device is accidentally tilted during use, the bearing portion is damaged by the impact force, the frictional resistance is increased, and the accuracy of the irradiated line light is deteriorated.

  Therefore, a first support body that pivots the laser beam irradiation device on the first support shaft so as to be swingable, and the first support body is pivotally supported on a second support shaft that is orthogonal to the first support shaft. A state in which a second support and a support member provided with a holding portion for holding the second support are provided, and a buffer is interposed on each side of the second support in the front-rear direction, the left-right direction, and the up-down direction. A laser marking device in which the second support is held by the holding portion has been proposed (see, for example, Patent Document 1). The “laser light irradiation device” is a member corresponding to the rocking member including a laser light source. The first support shaft, the second support shaft, and the second support constitute a gimbal mechanism or a gyro mechanism. The buffer body reduces the impact force applied to the holding part side on the fixed side from being transmitted to the gimbal mechanism or the gyro mechanism and the swinging body supported so as to swing by the gimbal mechanism. Or the gyro mechanism is less susceptible to damage.

  According to the invention described in Patent Document 1, it is effective to protect the gimbal mechanism or the gyro mechanism when the laser marking device is brought down or dropped. However, since the buffer body in the invention described in Patent Document 1 needs to be configured to wrap around the entire outer surface, upper and lower surfaces, and both side surfaces of the second support body, the area and volume of the buffer body increase, There is a drawback that the cost of the buffer becomes high, and the presence of the buffer increases the volume of the laser marking device. Further, it is necessary to buffer the gimbal mechanism or the gyro mechanism and the rocking body including the second support, and there are many objects to be buffered, and it is necessary to increase the buffering effect accordingly. This also contributes to an increase in the volume of the buffer.

JP 2004-301756 A

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a low-cost ink discharger that is excellent in impact resistance even if the volume of the buffer is reduced. And

The present invention relates to an inking device in which a rocking body is swingably supported by a gimbal mechanism, and line light is emitted from a light source unit attached to the rocking body. The gimbal mechanism is attached to a fixed support body. The shaft has a shaft that supports the rocking body in a swingable manner, and the shaft has an outer periphery surrounded by a buffer that is held by the support and is supported by the support through the buffer. The main feature is that it is supported.
Each shock absorber supporting both ends of the shaft has a cylindrical bottomed hole into which the shaft is inserted, and the outer periphery of the shaft is a shock absorber by inserting the end of the shaft into the bottomed hole. It is more preferable that both end faces of the shaft are configured to be opposed to the bottom face of the hole of the buffer body.

  In the present invention, since the shaft constituting a part of the gimbal mechanism is directly supported by the support via the buffer, the number of parts can be reduced. Further, since the buffer only needs to cushion the shaft, the volume may be small, and a compact and low-cost inking device can be obtained while being an inking device having impact resistance.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a marking device according to the present invention are described with reference to the drawings.
The illustrated embodiment is an example of a laser marking device. First, an outline of the laser marking device will be described, and then a specific configuration will be described. 1 and 2, reference numeral 10 indicates a tower-shaped support base. The support base 10 is fixed upright on a base (not shown). The upper part of the support base 10 is an attachment portion for the gimbal mechanism 30, and the oscillating body 20 is suspended by the gimbal mechanism 30 attached thereto so that the oscillating body 20 can oscillate and always maintain a vertical posture. The upper part of the rocking body 20 protrudes upward from the gimbal mechanism 30, and a light source unit 52 that emits horizontal line light and a light source unit 54 that emits vertical line light are attached to the upper part of the rocking body. It has been.

  A detailed configuration of the gimbal mechanism will be described with reference to FIGS. The support base 10 is made of, for example, an integrally molded product of plastic, and the upper part has a rectangular cylindrical shape, and is cut into the inner surfaces of the pair of opposing walls 12 from the upper side to the lower side. A horseshoe-shaped concave portion 14 having a semicircular lower portion is formed. The buffer body 40 is dropped into the pair of recesses 14, and the buffer body 40 is held by the support base 10. The outer shape of the buffer body 40 has a horseshoe shape in accordance with the shape of the recess 14, and the recess 14 is made up. Each shock absorber 40 is formed with a cylindrical hole from the opposite side. The hole is a bottomed hole so as not to penetrate the buffer body 40. A cylindrical shaft support member 44 is fitted in the hole of each buffer body 40, and each end portion of the shaft 42 is inserted into the center hole of the pair of shaft support members 44. The shaft 42 and the respective shaft support members 44 are integrally coupled by the thread screw 46 screwed in from above. The female screw 46 enters the inner peripheral side of the outer peripheral surface of the shaft support member 44, and in this state, each shaft support member 44 is inserted into the hole of the buffer body 40. It is effective to use a high buffer material such as sorbosein or butyl rubber as the material of each buffer body 40.

  A holding plate 48 is placed on the upper surface of the pair of walls 12 of the support base 10, and the holding plate 48 is fixed to the support base 10 with screws 50. The holding plate 48 prevents it. Further, as described above, the hole for receiving the shaft support member 44 of each buffer 40 is a bottomed hole, and each end surface of the shaft 42 or the end surface of the shaft support member 44 faces the bottom surface of the hole and By hitting the bottom surface of the hole, each buffer 40 is prevented from falling off from the recess 14 to the inside of the support 10. In other words, the both ends of the shaft 42 are inserted into the center hole of the shaft support member 44, and each shaft support member 44 is inserted into the bottomed hole of the buffer body 40, thereby the both ends of the shaft 42. The outer periphery of the part is supported by the support body 10 via the shaft support member 44 and the buffer body 40.

  The shaft 42 penetrates the intermediate support 31 in the horizontal direction. The intermediate support 31 has a rectangular frame shape when viewed from the upper surface side. The shaft 42 passes through a pair of opposing walls, and the shaft 42 is rotated by a ball bearing 32 fitted into the pair of walls. Supports freely. In other words, the intermediate support 31 is rotatably supported by the shaft 42.

  When the shaft 42 is the first shaft, the intermediate support 31 supports the second shaft in a direction perpendicular to the shaft 42 above the shaft 42. The oscillating body 20 is supported by the second shaft, and the oscillating body 20 is swingable about the second axis. Although the specific support structure of the rocking body 20 by the second shaft is not shown, the rocking body 20 has a circular bearing holding hole 36, and a ball bearing (not shown) is fitted into the bearing holding hole 36. The second shaft is rotatably supported by a ball bearing. The oscillating surface of the oscillating body 20 centered on the second axis is a vertical surface including the central axis of the shaft 42, and the oscillating body 20 does not interfere with the oscillation of the oscillating body 20. An escape hole 26 for the shaft 42 is formed in the moving body 20 (see FIG. 1).

  As described above, the gimbal mechanism 30 includes the horizontal shaft 42 supported by the support base 10, the intermediate support 31 supported rotatably around the shaft 42, and the shaft 42 on the intermediate support 31. It is comprised by the 2nd axis | shaft supported in the direction orthogonal to. The swinging body 20 supported so as to be swingable about the second axis is of course capable of swinging about the second axis, and of course, an intermediate support that supports the swinging body 20. Since the body 31 is rotatable about the shaft 42, the rocking body 20 can rock in all directions with respect to the support body 10. Therefore, even if the support 10 is tilted, the swinging body 20 can always take a vertical posture, and the balance is adjusted so as to always take the vertical posture.

  The swing body 20 is integrally formed with a weight attaching portion 24 at the lower end in the horizontal direction, and a flat weight 60 is attached to the lower surface of the weight attaching portion 24. The upper part of the rocking body 20 protrudes upward from the gimbal mechanism 30, and the protruding part is a square frame type light source unit attachment part 22. A light source unit 52 that emits horizontal line light is mounted in the frame of the light source unit mounting portion 22 with its optical axis oriented in the horizontal direction. A light source unit 54 that emits vertical line light is attached to the upper end of the light source unit attachment portion 22 with the optical axis obliquely upward. Both the light source unit 52 and the light source unit 54 are laser light source units having a semiconductor laser as a light source. Each of the light source units 52 and 54 has a semiconductor laser and a collimating lens that makes the divergent laser light emitted from the semiconductor laser a parallel light flux, and also has a cylindrical rod lens that diffuses the parallel light flux only in one direction. . The rod lens 53 included in the light source unit 52 is attached to the swinging pair 20 so that the center axis thereof is vertical, and a laser beam is incident from a direction orthogonal to the center axis of the rod lens 53. Is diffused and radiated only in the horizontal direction, so that the line light in the horizontal direction can be irradiated onto the wall surface of the building. The rod lens 55 included in the light source unit 54 is attached to the rocking body 20 so that the center axis thereof is horizontal, and a laser beam is incident by a laser beam entering from a direction orthogonal to the center axis of the rod lens 55. The light is diffused and emitted only in the vertical direction, and the ceiling light, wall surface, floor surface, etc. of the building can be irradiated with vertical line light. The balance adjustment of the oscillator 20 described above is performed with the light source units 52 and 54 attached.

  The most characteristic configuration in the above-described embodiment resides in the buffer body 40 and the gimbal mechanism 30 supported thereby. Since the pair of shock absorbers 40 wraps both ends of the shaft 42 from around the central axis of the shaft 42 via the shaft support member 44, the impact force applied to the shaft 42 and the ball bearing 32 from around the shaft 42. Can be reduced. Further, when an impact force is applied from the direction of the central axis of the shaft 42, the end surfaces of the shaft 42 and the shaft support member 44 come into contact with the inner bottom surface of one of the buffer bodies 40 and are buffered. The impact force applied to 32 can be reduced.

  The buffer body 40 is configured to buffer the shaft 42 constituting a part of the gimbal mechanism 30 and does not buffer the support body of the shaft 42. In the invention described in Patent Document 1, a support body that supports the gimbal mechanism is supported via a buffer body. This will be described with reference to the illustrated embodiment of the present invention. A second support is attached to the upper portion of the support 10 via a buffer 40, and corresponds to the shaft 42 by the second support. Supports the shaft. On the other hand, in the embodiment of the present invention, there is nothing corresponding to the second support body, and the shaft 42 constituting a part of the gimbal mechanism is directly supported by the support body 10 via the buffer body 40. . Accordingly, the number of parts can be reduced, and the buffer body 40 only needs to buffer the shaft 42, so that the volume can be small, and a compact ink discharger can be obtained while being a shocking ink discharger. Can do.

  The shaft 42 may be directly inserted into the buffer body 40. However, by inserting the shaft support member 44 inserted on the outer periphery of the shaft 42 into the buffer body 40 as in the illustrated embodiment, the shaft 42 can be inserted into the buffer body 40. The contact area can be increased, the buffering capacity when an impact is applied can be increased, and damage to the gimbal mechanism 30 can be reduced.

The “gimbal mechanism” may be referred to as a “gyro mechanism”.
In the illustrated embodiment, one light source unit is attached to the oscillator 10 to irradiate horizontal line light and vertical line light, but the configuration of the light source unit is arbitrary.
In the illustrated example, the buffer body 40 has been described as being used only for the portion that supports the shaft 42 as the first shaft, but the portion that supports the second shaft in the direction orthogonal to the shaft 42 is also used. If a buffer is used, the buffering effect can be further enhanced.

It is a partial cross section side view which shows the Example of the inking device concerning this invention. It is a disassembled perspective view of the said Example. It is a top view which shows the support body of the said Example. It is sectional drawing which follows the line CC in FIG. It is sectional drawing which follows the line BB in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Support body 20 Oscillating body 30 Gimbal mechanism 31 Intermediate support body 32 Ball bearing 40 Buffer body 42 Shaft 44 Shaft support member 52 Light source unit 54 Light source unit

Claims (5)

An inking device in which a rocking body is swingably supported by a gimbal mechanism, and line light is emitted from a light source unit attached to the rocking body,
The gimbal mechanism has a shaft that oscillates the oscillating body relative to a fixed support body,
The shaft is surrounded by a buffer that is supported by the support at both ends of the shaft, and is supported by the support through the buffer.   Each buffer that supports both ends of the shaft has a cylindrical bottomed hole into which the shaft is inserted, and the outer periphery of the shaft is surrounded by the buffer by inserting the end of the shaft into the bottomed hole. The ink marking device according to claim 1, wherein both end surfaces of the shaft are opposed to the bottom surface of the hole of the buffer.   Both end portions of the shaft are inserted into the center hole of the shaft support member, and each of the shaft support members is inserted into the bottomed hole of the buffer body, so that the outer periphery of both ends of the shaft passes through the shaft support member and the buffer body. The inking device according to claim 1, which is supported by a support.   The intermediate support is rotatably supported by the shaft via a ball bearing, and the swing support is swingably supported by the second support in a direction orthogonal to the shaft. Inking machine. The inking device according to claim 1, wherein the light source unit is a laser light source unit having a semiconductor laser as a light source.

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