JP2018048010A - Fixture for transported article detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixture for a detection device for an article or the like transported on a conveyor, have a highly rigid structure which is not easily affected by vibration or the like, and can be surely and easily installed on the conveyor at an installation location. Provided are fixtures for a conveyor article detecting device that have few restrictions. SOLUTION: This is an attachment of a conveyed article detection device, and has a detector fixing portion for fixing a detector or a holder for holding the detector, and a frame fixing portion for fixing a conveyor frame, and a part thereof. Or all are block-shaped materials. [Selection diagram] Fig. 1

Description

  The present invention relates to a fixture for a detection device such as an article conveyed on a conveyor such as a belt conveyor.

  In the field of physical distribution, detection devices for detecting passage and arrival of articles conveyed on conveyors such as belt conveyors and roller conveyors are widely used. As a detection device, an optical device is generally used, and a light emitting element and a light receiving element are often provided in a direction orthogonal to the article conveyance direction. In this case, the light emitting element and the light receiving element are integrally formed and provided on one side, and a reflecting mirror (mirror) is often placed on the opposite side.

  Here, in Patent Document 1, in a conveyor having a transported object detection device that detects a transported object passing through without contact, in order to improve the mounting structure of the components of the detection device, A horizontal plate portion at the lower end of the frame for guiding the object to be conveyed is overlapped and joined on the horizontal plate portion at the upper end of the side frame S1, S2, and the light emitter / receiver P is connected to the outside of the vertical plate portion of the guide frame member. A lower horizontal plate portion that is fastened together with a bolt and nut that penetrates and tightens the overlapping portion to a horizontal overlapping portion of the side frame and the frame guide material to be conveyed. A technical idea of a configuration in which a component support member provided with a component mounting plate portion rising from an outer side of the lower horizontal plate portion is provided, and a projector / receiver P is mounted inside the component mounting plate portion is disclosed. Yes. FIG. 4 shows this as a conventional example.

  This eliminates the need for drilling holes for attaching the component support material to the conveyed object guide frame material, and as a result, the conveyed object guide frame material, that is, the conveyed object can be in sliding contact. There is no danger of creating protrusions on the inner surface. Therefore, since the article is not skewed, the occupation length of the article in the conveyor traveling direction is not increased, and the conveyance interval of the article can be reduced, so that the processing capability can be improved.

JP 2004-26327 A

  However, the component support material of Patent Document 1 has a thin plate structure, which may adversely affect the detection function of the detection device due to the influence of vibration and the like, and the conveyor side frame and the frame guide material to be conveyed Due to the structure that is tightened together with bolts and nuts that are tightened through, there is a risk that the transported object detection device may not be fixed securely, the operation is not easy, and there are restrictions on the installation location, etc. There was a problem.

  Therefore, in order to solve the above problem, the present invention is a fixture for a detection device such as an article conveyed on a conveyor, has a highly rigid structure that is not easily affected by vibration, and is installed on the conveyor. It is an object of the present invention to provide a fixture for a transported article detection apparatus that is reliable and easy and has few restrictions on installation locations.

In order to solve such a problem, the present invention is a fixture of a transported article detection device,
It has a detector fixing part for fixing the detector or a holder for holding the detector, and a frame fixing part for fixing to the conveyor frame, and part or all of the detector fixing part is a block-shaped material.

  Here, a detector (reflector type) composed of a light projecting / receiving device and a reflecting mirror (mirror) that detects reflected light is preferable because it can be easily installed. The device may be configured separately to detect transmitted light. Alternatively, an integrated detector using diffuse reflection without using a reflecting mirror may be used.

  As the light to be used, infrared LED light, red laser light, and the like are suitable, but the light is not limited thereto, and may be ultrasonic waves other than light.

  It should be noted that the entire fixture has a block shape and is a material formed by casting, forging, cutting, or molding, and is particularly preferably made of an iron casting (iron casting). The casting may be applied only partially, or it may be made of a metal such as aluminum other than iron, an alloy, or a resin. Here, the block shape is not a thin sheet metal structure but includes a block shape or a thick plate shape.

  In this way, since the rigidity can be made higher than that of the sheet metal structure, it is difficult to be affected by vibration and the like, and stable detection performance can be maintained. In particular, an iron casting is more suitable because it has a high effect of absorbing vibration and sound, has a high degree of freedom in molding, and increases the number of manufacturing, thereby reducing the cost.

  Further, the present invention may be characterized in that the frame fixing portion has a structure for holding and fixing the frame.

  Here, the frame fixing part of the clamping structure has a gap larger than the frame thickness between the clamping parts on both sides, and is fixed to the frame by tightening a screw inserted into a screw hole provided on one side of the clamping part It is preferable that

  In this way, when installing the detection device, it is not necessary to process the frame part at all, and it can be installed at a desired position, so there are few restrictions on the installation location. In addition, since the gap between the clamping parts is larger than the thickness of the frame part, it can be fixed without being affected by fluctuations in the thickness of the frame part. Elastic deformation is generated and a strong fastening force can be maintained.

  Furthermore, the fixture of the conveyed article detection apparatus of this invention may have a notch part for avoiding the edge part of the roller of a conveyor in a part of frame fixing | fixed part.

  For example, when the fixture is clamped and fixed in a horizontal direction, the lower portion of the fixture may interfere with the shaft tip of the conveyor roller. Here, by providing a notch portion below the frame fixing portion, it is possible to avoid interference with the tip of the roller shaft, thereby further reducing the restrictions on the installation location of the conveyed object detection device.

  Depending on the installation location and orientation of the transported object detection device, not only on the lower side of the frame fixing unit, but also on one side or on both sides, a notch may be provided.

  Further, the fixture of the transported article detection apparatus of the present invention may be characterized in that a notch-shaped wiring guide part for guiding wiring is provided in one or both of the detector fixing part and the frame fixing part. Good. This part can be used to guide signal lines and power lines from or to the detector. In addition, the wiring guide part is not limited to the notch shape, and may have a shape in which a part of the fixture is protruded.

  As a result, there is no risk that workers, articles to be transported, carts, etc. will be caught by wiring and cause troubles.

  Furthermore, the fixture of the transported article detection apparatus of the present invention may be used in common for different types of detectors.

  For example, in the case of a combination of a light emitter / receiver and a mirror, a detector fixing portion for fixing the light emitter / receiver or its holder can be used as a detector fixing portion for fixing the mirror or its holder. ing.

  In this way, there is no need to prepare a fixture for each type of detector, and there are significant advantages such as manufacturing costs and management costs of the fixture, and reduction of mistakes in field work.

  Furthermore, the fixture of the transported article detection apparatus of the present invention may be characterized in that it can be fixed to the frame while the detector is fixed.

  If it does in this way, since a detector can be fixed to a frame in the state where a detector was fixed previously, there is an advantage that setup of an installation operation becomes easy and an installation operation time can be shortened.

  Moreover, the aspect of the conveyed product detection apparatus using the fixture described so far may be sufficient as this invention. High reliability can be obtained as a whole detection device.

  Furthermore, the aspect of this invention may be a conveyor having a transported object detection device using the fixture described above. High reliability is obtained for the entire conveyor.

  The fixture of the transported article detection apparatus according to the present invention has a highly rigid structure that is not easily affected by vibration and the like, and can be reliably and easily installed on a conveyor. Can be reduced.

It is a perspective view of the fixture concerning a 1st embodiment of the present invention. It is another perspective view of the fixture which concerns on the 1st Embodiment of this invention. It is a perspective view of a conveyor which has a fixture concerning a 1st embodiment of the present invention. It is sectional drawing of the conventional fixture.

  Hereinafter, with reference to the drawings, a fixture for a transported article detection device according to a first embodiment of the present invention will be described. In the following, the range necessary for the description for achieving the object of the present invention is schematically shown, and the range necessary for the description of the relevant part of the present invention will be mainly described. According to a known technique.

  FIG. 1 is a perspective view of a fixture of the transported article detection apparatus according to the first embodiment of the present invention, FIG. 2 is a perspective view of the same fixture as seen from another direction, and FIG. It is a perspective view of the conveyance article detection apparatus and conveyor which used such a fixture.

  FIG. 3 shows a roller conveyor 200 having a number of rollers 220. The roller conveyor 200 is rotationally driven by a drive mechanism (not shown) or is configured to be freely rotatable. These rollers 220 are provided between the frames 210A and 210B on both sides, and the roller shaft tip portion 221 is stepped (small diameter), and this portion is supported by a bearing (not shown). Here, the article is conveyed on the roller conveyor 200.

  Here, detectors 20A and 20B are provided on the frames 210A and 210B on both sides of the roller conveyor 200, respectively. Here, the detector 20A is a light emitting / receiving device in which a light emitting portion that emits infrared light of an LED and a light receiving portion that receives the reflection are integrally formed, and the detector 20B is a mirror that reflects the emitted light. It is.

  Detector holders 21A and 21B hold detectors 20A and 20B, respectively. The shape of the detector holder 21 differs depending on the shape of the detector. The detector holder 21A has a substantially convex shape and the detector holder 21B has an L shape. However, the shape is not limited to this shape.

  The fixtures 10A and 10B have detector fixing portions 11A and 11B for fixing detector holders 21A and 21B holding the detectors 20A and 20B, respectively, and frame fixing portions 12A and 12B.

  Furthermore, the frame fixing portions 12A and 12B of the fixtures 10A and 10B are each composed of two holding portions that hold the frames 210A and 210B, and one holding portion has notches 13A and 13B. .

  Furthermore, the fixture 10A includes a first wiring guide portion 14A and a second wiring guide portion 15A that guide the wiring C to the detector 20A.

  FIG.1 and FIG.2 is the perspective view seen from the different direction of the same fixture 10 of the 1st Embodiment of this invention.

  Here, the fixture 10A and the fixture 10B described so far can use the fixture 10 shown in FIGS. 1 and 2 in common. Therefore, it demonstrates without attaching A and B here.

  As described above, the fixture 10 includes the detector fixing part 11 for fixing the detector holder 21 holding the detector 20 and the frame fixing part 12 for fixing to the frame 210. The material is a block-like material as a whole, for example, cast iron, and finishes the mounting surface.

Here, the upper surface (detector holder 21 mounting surface) of the detector fixing portion 11 and the upper surface of the frame fixing portion 12 are flush with each other. This has the advantage that processing becomes easy.
However, it is not limited to this structure.

  In the detector fixing portion 11, a first detector holder fixing screw hole 161 for fixing the detector holder 21 holding the detector 20 with the detector holder fixing screw 16 and the second detection. There are two screw holes 162 for fixing the retainer holder at equal intervals. The screw holes 161 and 162 may have only one of them.

  Further, the detector fixing portion 11 is provided with a first wiring guide portion 14 having a narrow entrance and a cylindrical space at the back.

  The frame fixing part 12 has a two-part holding part for holding the frame. When the frame fixing part 12 is assembled to the horizontal frame 210, the upper holding part on the upper side has a notch or a screw hole. On the other hand, the lower holding part which is the lower side is provided with a notch 13 at the center, and further, the frame fixing screw 17 is screwed into the left and right lower holding parts of the notch 13. Two screw holes 171 for fixing the frame are provided. As for the thickness of the clamping part itself, the upper side is thin and the lower side is thick.

  It should be noted that the width of the gap portion between both the sandwiching portions is slightly larger than the thickness of the frame 210.

  Further, near the detector fixing part 11 of the frame fixing part 12, a second wiring guide part 15 having a narrow entrance and a cylindrical space at the back is provided.

  The usage method and operation of the fixture of the transported article detection apparatus 100 configured as described above will be described.

  The detector 20A, which is a light receiving and emitting device, is fixed to the detector holder 21A with the detector fixing screw 22A, and then fixed to the detector fixing portion 11A of the fixture A with the two detector holder fixing screws 16A. . Here, the first detector holder fixing screw hole 161 shown in FIG. 1 is used. In order to enable this, the detector holder fixing screw 161A may be in a position where it can be fastened from above using a fastening tool even after the detector 20A is fixed to the detector holder 21A. desirable. The same applies to the detector 20B.

  The detector 20B, which is a mirror, is fixed to the detector holder 21B with the detector fixing screw 22B, and then fixed to the detector fixing portion 11 of the fixture 10B with two detector holder fixing screws 16B. Here, the second detector holder fixing screw hole 162 shown in FIG. 1 is used.

  In this state, the fixture 10A on which the detector 20A is mounted is fixed to the horizontal portion of the frame 210A by the frame fixing portion 12A. Specifically, the frame 210 is inserted into the gap between the upper and lower clamping portions of the frame fixing portion 12A. At the position where the optical axis of the detector 20A is orthogonal or oblique to the traveling direction of the roller conveyor 200, the fixture 10A is fixed by tightening the screw using the frame fixing screw hole 171 of the lower holding portion. To do.

  Here, since the width of the gap between the both sandwiching portions is slightly larger than the thickness of the frame 210, the gap can be fixed without being affected by the variation in the thickness of the frame portion. By tightening, elastic deformation is generated particularly in the clamping portion on the screw tightening side, and a strong fastening force can be maintained. Here, the upper holding portion on which the detector holder 21 is mounted is not deformed with its lower side in close contact with the frame 210, and the lower holding portion having a screw hole is deformed, which affects the detection performance. Never give.

  In addition, since the material of the fixture 10A is a block-shaped material, for example, cast iron, the rigidity is higher than that of a thin steel plate (sheet metal) or an aluminum casting other than iron, for example, strength against external force and tightening. Since it is excellent in strength, it is suitable. However, even other materials may be suitable depending on use conditions as long as they are in a block form.

  Further, the fixture 10A includes a first wiring guide portion 14A and a second wiring guide portion 15A shown in FIG. 2, both of which include a power line, a signal line, and the like to the detector 20A that is a light emitting / receiving device. The wiring C is introduced from the narrow entrance and guided through the inner cylindrical space. This restricts the free movement of the wiring C and prevents unexpected troubles.

  Next, the fixture 10B on which the detector 20B is mounted is also fixed to the frame 210B in the same manner as the fixture 10A. At this time, the optical axis of the detector 20B (perpendicular to the mirror surface) is fixed to the frame 210B so as to be orthogonal or oblique to the traveling direction of the roller conveyor 200 and substantially coincide with the optical axis of the detector 20A. To do.

  Here, the shaft tip portion 221 of the roller 220 may protrude inside the frame 210B where the transported article detection device 100 is desired to be installed (outside the conveyor 200 transport path). In this case, the roller shaft tip 221 is positioned in the notch 13 of the fixture 10B, so that the installation can be performed, and the installation place is extremely limited. This also applies to the fixture 10A.

  Thereafter, fine adjustment is performed so that the optical axes of the detector 20A and the detector 20B are coaxial. This may be achieved by using either or both of the detector fixing screws 22A and 22B and the detector holder fixing screws 16A and 16B as the holding positions of either or both of the detector 20A and the detector 20B. This is possible, for example, by making the detector holders 21A, 21B side long holes when fastening the screws.

  As described above, in the conveyor 200 in which the transported article detection apparatus 100 including the detectors 20A and 20B is installed, the transported articles are transported from the upstream to the downstream of the conveyor 200 for sorting, storage, shipping, and the like.

  When the tip of the article arrives at the position where the transported article detection apparatus 100 is installed, the light emission from the detector 20A is blocked by the article, and no reflected light enters the light receiving portion of the detector 20A. Thus, arrival of the article can be detected. When the article passes, the light emitted from the light emitting portion of the detector 20A is reflected by the detector 20B, which is a mirror, and the light receiving portion of the detector 20A detects it, thereby detecting that the article has passed. .

  Although the fixtures 10A and 10B can be used in common, in this case, the wiring guide portions 14 and 15 are not necessary for the fixture 10B, but they may be provided as they are. By reducing the number of parts, it is possible to reduce costs such as storage.

  In addition, the first detector holder fixing screw hole 161 and the second detector holder fixing screw hole 162 are provided, but the detector holder 21A and the detector holder 21B are connected to a common detector. You may make it respond | correspond by the screw hole for a holder fixing. By doing so, the manufacturing cost of the fixture 10 can be reduced and the operation can be simplified.

  On the other hand, if the first detector holder fixing screw hole 161 and the second detector holder fixing screw hole 162 are provided, the detector specification, the object to be detected, the detection distance, and the like are taken into consideration. It is also possible to select the mounting position of the detector.

  Further, although the first detector holder fixing screw hole 161 and the second detector holder fixing screw hole 162 are two screw holes at equal intervals, they may not necessarily be at equal intervals. . Different intervals may be used depending on the shape of the detector holder 21.

  In the above description, the detector 20A is a light receiving / emitting device, the detector 20B is a mirror, and infrared LED light is used. However, the detector 20A may be a light emitting device and the detector 20B may be a light receiving device. In addition, visible light may be used instead of infrared light, and laser light may be used instead of LED light emission. Furthermore, detection elements such as ultrasonic waves other than light may be used.

  In the above description, the detector 20 is fixed to the fixture 10 via the detector holder 21, but the detector 20 is directly attached to the fixture 10 without the detector holder 21. It may be fixed. Such a method may be possible depending on the form of the detector 20.

  Moreover, the material of the fixture 10 is a block-shaped material, for example, cast iron as an example, and the mounting surface is finished. However, only a part such as a clamping part is made of cast iron, and the others are different materials. Also good. Furthermore, it may be made of a metal such as aluminum other than iron, an alloy, or a resin. There may be cases where it meets the requirements in terms of cost and performance.

  Moreover, as the conveyor 200 using the conveyance article detection apparatus 100, it is not limited to a roller conveyor, What kind of conveyors, such as a belt conveyor and a slat conveyor, may be sufficient. In any case, by using the transported article detection apparatus 100, there is an advantage that the transported article can be detected simply and stably.

  Further, although the transported article is detected, it can also be used for detecting an abnormal transport state such as breakage of conveyor parts, or for detecting an emergency such as an operator or foreign object entering.

DESCRIPTION OF SYMBOLS 10 Mounting tool 11 Detector fixing | fixed part 12 Frame fixing | fixed part 13 Notch part 14 1st wiring guide part 15 2nd wiring guide part 16 Detector holder fixing screw 17 Frame fixing screw 20 Detector 21 Detector holder 22 Detector fixing screw 100 Conveyed article detection device 200 Roller conveyor 210 Frame 220 Roller 221 Roller shaft tip

Claims (9)

A detector fixing part for fixing the detector or a holder for holding the detector;
A fixture for a transported article detection device, wherein the fixture is a block-shaped material.   The fixture for a transported article detection apparatus according to claim 1, wherein the block-shaped material is an iron casting.   The said frame fixing | fixed part is a structure which clamps and fixes the said frame, The fixture of the conveyance article detection apparatus of Claim 1 characterized by the above-mentioned.   The fixture of the conveyed article detection apparatus of Claim 2 which has a notch for avoiding the axial edge part of the roller of the said conveyor in a part of said frame fixing | fixed part.   The fixture for a transported article detection apparatus according to claim 1, further comprising a wiring guide portion that guides the wiring.   The fixture for a transported article detection apparatus according to claim 1, wherein the detector fixing part is common to different types of detectors.   The fixture of the conveyed article detection apparatus of Claim 1 which can be fixed to the said frame in the state which fixed the said detector.   The conveyed product detection apparatus using the fixture of Claim 1.   The conveyor which has the conveyed product detection apparatus of Claim 8.

Images