JP5138289B2 - Curve conveyor cover mounting structure - Google Patents

Description

  The present invention relates to a cover mounting structure for a curved conveyor.

  Generally, a curved conveyor is known as a belt conveyor having a curved conveying path (curved conveying path), and a curved conveying path is formed by curving the conveyor belt on the curved portion of the curved conveyor. For this purpose, a belt guide mechanism constituted by a rotating body such as a bearing and a roller is disposed. Therefore, a safety cover is provided so as to cover the outer portion of such a curved conveyance path (see, for example, Patent Document 1).

  Such a safety cover includes a vertical cover portion that extends in the vertical direction and covers the outer side of the curved conveyance path, and an upper cover portion that extends in the horizontal direction and covers the upper side of the curved conveyance path. Therefore, if they are structured to be integrally joined by welding, the entire safety cover must be removed during internal maintenance, and the internal maintenance becomes troublesome.

For this reason, the auxiliary cover member (corresponding to the vertical cover part) can be detachably fixed to the cover body with a fixing device such as a bolt without using an integrated structure as described above. The current situation is that maintenance can be performed by removing the cover member from the cover body. The auxiliary cover member is formed by rounding an iron plate (thickness 1.2 mm to 3.2 mm) so as to cover the outer side of the curved conveyance path, and corresponds to a mounting hole provided in the cover body. The structure has a through hole.
JP2003-34416A (FIG. 1)

  If the structure is such that the auxiliary cover member is attached to the cover body as described above, there are the following problems.

  (i) If a mounting hole is previously formed in the cover body in relation to the auxiliary cover member and welding distortion or bending accuracy of the cover body, the auxiliary cover member is positioned between the through hole of the auxiliary cover member. Deviation may occur.

  (ii) If the pitch of the mounting holes is too wide, the auxiliary cover member may vibrate during conveyor operation or a gap may be formed between adjacent auxiliary cover members. The pitch of the mounting holes is limited. That is, the pitch of the mounting holes needs to be about 200 mm to 350 mm.

  (iii) In particular, when installed in a distribution center or airport, the outer circumference of the curve conveyor becomes longer, so that the number of processing points at the installation site is very large and the number of assembly steps increases. Therefore, the number of work steps is greatly increased when the auxiliary cover member is attached and detached for maintenance work.

  (iv) Since drill powder generated during drilling of the pilot hole and subsequent tapping process enters the cover body, the cover body is removed together with the auxiliary cover member and the inside is cleaned with air blow etc. There is a need to. This is because if the dust powder enters the gaps between the internal parts, problems such as abnormal noise and scratches may occur.

  (v) Since many mounting bolts for attaching the auxiliary cover member to the cover body are exposed, the appearance is poor.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a cover mounting structure for a curve conveyor, in which an auxiliary cover member can be easily attached and detached, and is excellent in installation workability and maintenance.

  In the first aspect of the present invention, a cover main body is provided so as to cover the outer peripheral side of the curved conveyance path by the conveyor belt, and a belt guide mechanism that causes the conveyor belt to form the curved conveyance path is disposed on the cover main body. A cover mounting structure for a curved conveyor, in which an auxiliary cover member that closes the opening is detachably attached to the cover body, and the auxiliary cover member is attached with a magnet. It is made of a flexible sheet material that can be bent along the curved conveyance path, and is detachably attached to the cover body by the magnet. Here, the “belt guide mechanism for forming the curved conveying path in the conveyor belt” means rotation of bearings, rollers, etc., which exhibit a guiding function for causing the conveyor belt to curve and travel in order to form the curved conveying path. This is a well-known mechanism including the body.

  In this way, the auxiliary cover member is lightweight, and the auxiliary cover member is detachably attached to the cover main body by the magnet. It is not necessary to consider the restrictions of the pitch, and it is excellent in installation workability and maintenance. Further, since no mounting bolts or the like are used, there is no generation of dust and the like, and the appearance can be improved.

  In particular, the auxiliary cover member is made of a flexible sheet material that can be bent along the curved conveyance path to which the magnet is attached, so that the work is relatively easy even in a narrow installation place. The time can be shortened, and it is not necessary to bend the steel plate to form an auxiliary cover member, or to drill or tap the pilot hole at the installation location. It is advantageous in going down.

  In this case, as described in claim 2, the flexible sheet material is formed by laminating a cover layer on the upper and lower sides of the core layer, and the magnet is fixed to the cover layer by a double-sided tape or an adhesive. It can be set as the structure which has.

  If it does in this way, a magnet can be fixed to a flexible sheet material with a double-sided tape or a normal temperature adhesive, and an auxiliary cover member can be formed easily.

As described in claim 3, wherein the auxiliary cover member, while a plurality of through-holes through said magnet and said flexible sheet material in a portion where the magnet is provided is formed, the through hole a plurality of mounting holes formed in the cover body to correspond to, are inserted into and removed can be inserted and the locking tool into the mounting hole through the through hole of the auxiliary cover member of the cover body, the auxiliary cover member said cover It can be set as the structure which can be temporarily fixed with respect to a main body.

  If it does in this way, at the time of transportation from a manufacturing factory etc. to an installation place, the position of an auxiliary cover member will be prevented from shifting or falling by temporary stop by a locking tool.

  As described above, according to the present invention, the auxiliary cover member is lightweight, and since the auxiliary cover member is detachably attached to the cover body by the magnet, the auxiliary cover member can be easily attached and detached, and installation workability and maintenance Excellent in properties. Further, since no mounting bolts or the like are used, there is no generation of dust and the like, and the appearance can be improved.

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

  FIG. 1 is an exploded perspective view showing a cover mounting structure of a curved conveyor having a curved conveyance path.

  In FIG. 1, reference numeral 1 denotes a holder cover (cover body) disposed outside a curved conveyance path (curved conveyance path) by a conveyor belt (not shown), and a lower cover member on a lower portion of the upper cover member 11. A rectangular opening (cutting) facing a portion where a belt guide mechanism including a rotating body such as a bearing and a roller, which forms a curved conveyance path by curving and running the conveyor belt, is mounted. Notches S1, S2) are formed. Auxiliary cover members 13A and 13B, which will be described later, are detachably attached to the cover body 1 via strip-shaped magnets 14A and 14B provided on the periphery thereof so as to cover the opening.

  The upper cover member 11 is formed by joining two members 11A and 11B formed substantially symmetrically, and they are fixed to a conveyor frame (not shown) of a curve conveyor by bolts or the like. Each member 11A, 11B includes horizontal portions 11Aa, 11Ba, upper wall portions 11Ab, 11Bb extending vertically upward from the inner peripheral side of the horizontal portions 11Aa, 11Ba, and side walls extending downward from the side edges of the horizontal portions. It has parts 11Ac, 11Bc and lower wall parts 11Ad, 11Bd extending vertically downward from the outer peripheral side of the horizontal parts 11Aa, 11Ba. The lower wall portions 11Ad, 11Bd have upper flange portions 11Ada, 11Bda and strip-like vertical wall portions 11Adb, 11Bdb, 11Adc, 11Bdc extending downward from the upper flange portions 11Ada, 11Bda, and are opened downward and rectangular. Notches S1 and S2 that form the openings are formed. The upper flange portions 11Ada, 11Bda and the vertical wall portions 11Adb, 11Bdb, 11Adc, 11Bdc have substantially the same width, and this width is wider than the widths of the magnets 14A, 14B.

  The two rectangular openings are formed by fixing the belt-like lower cover member 12 to the lower ends of the vertical wall portions 11Adb, 11Bdb, 11Adc, and 11Bdc of the lower wall portion with bolts (not shown). The Through these two openings, a belt guide mechanism including a rotating body such as a bearing and a roller can be seen from the outside.

  13A and 13B are auxiliary cover members which are flexible and have vertical wall portions 11Adb, 11Bdb, 11Adc, 11Bdc on the lower wall portion by magnets 14A, 14B (ferromagnetic type) so as to cover the openings. The lower cover member 12 is detachably attached. The magnets 14 </ b> A and 14 </ b> B are belt-shaped, and are provided along the periphery of the rectangular flexible sheet material so as to correspond to the openings, thereby forming auxiliary cover members 13 </ b> A and 13 </ b> B. Yes. A rectangular notch 13Ba is formed at the circumferential end of one auxiliary cover member 13B in order to penetrate the drive shaft of the drive mechanism of the curve conveyor from the inside to the outside. In addition, of course, notch part 13Ba can be abbreviate | omitted when it is not necessary to make a drive shaft penetrate the outer side of auxiliary cover member 13B.

  The auxiliary cover members 13A and 13B are formed with through holes 16 corresponding to the four mounting holes 15 formed in the upper flange portions 11Ada and 11Bda, and the plastic insertion fasteners are formed through the through holes 16. When the auxiliary cover members 13A and 13B are temporarily fixed to the cover main body 1 by inserting 17 (locking tool) so as to be detachable, vibrations and cover members 13A and 13B The auxiliary cover members 13A and 13B are prevented from dropping or moving due to the impact on 13B. The through-hole 16 is provided in a portion where the magnets 14A and 14B are provided, and not only the flexible sheet material but also the magnets 14A and 14B pass therethrough. The flexible sheet material constituting the auxiliary cover members 13A and 13B is composed of a single sheet having an outer peripheral length of 2000 mm (preferably 1800 mm) or less so that handling at the time of attachment / detachment is easy, and exceeds 2000 mm. Is divided at a maximum length of 2000 mm / sheet. Further, since the auxiliary cover members 13A and 13B do not fall or move only by operating the curve conveyor normally, after the curve conveyor is installed at a predetermined installation location, the temporary fixing by the insertion fastener 17 is released. There is no problem.

  The substantially rectangular flexible sheet material constituting the auxiliary cover members 13A and 13B is formed by laminating a cover layer on the upper and lower sides of a core body layer in which a core body cord is embedded in a spiral shape. It is not necessary. A thickness of about 1.2 mm to 3.2 mm (preferably 1.4 to 2.6 mm) is used. And magnet 14A, 14B is being fixed to the surface of the cover layer used as the inner peripheral side among the cover layers of a flexible sheet material. A canvas is laminated on the surface of the cover layer on the outer peripheral side, and the canvas layer constitutes the outer peripheral surface. Here, the core cord is made of polyester or polyester / cotton, the wire diameter is 500 to 1500 denier, the number of driving is 7 to 25 / cm, and the tensile strength is 30 to 120 kgf / cm is used. The cover layer is made of polyurethane or polyvinyl chloride. As the flexible sheet material used for the auxiliary cover member, a thin flat belt (for example, “Sunline” SL--C2NUGE HO (2ply) manufactured by Bando Chemical Co., Ltd.) can be used. If the core layer has a single layer structure, the rigidity of the flexible sheet material is insufficient, and wrinkles and dents may occur during mounting. Therefore, two or more layers are laminated as a countermeasure against the wrinkles and dents. Although it is desirable to have a structure, a single layer structure can be used as long as it is a core layer using a core having a tensile strength of 175 kgf / cm or more.

As the magnets 14A and 14B, band-shaped magnets with a double-sided tape (trade name: MAGTAC (made by Magman), size: thickness 1.5 mm × width 19 mm (or width 13 mm, 25 mm) can be used. As such, it is desirable to use an anisotropic material (ferromagnetic type) having a thickness of 0.8 mm or more and an adsorption force of 50 g / cm ² or more (for example, trade name: magnesheet ( Made by Magman)).

  When the belt-like magnet with the double-sided tape is not used, as the double-sided tape for fixing the magnets 14A and 14B to the flexible sheet material, a super strong double-sided tape (manufactured by Scotch, model: SVP (PVC belt) or SVG ( Urethane belts)) can be used. As a normal temperature adhesive for fixing the magnets 14A and 14B to the flexible sheet material, Sunpat C (manufactured by Bando Chemical Co., Ltd., model: # 1100) can be used.

  Next, a procedure for attaching the auxiliary cover member in the field will be described.

  First, a belt-like magnet with a double-sided tape is attached to the inner peripheral surface side of a flexible sheet material (belt material) cut to a fixed size. Here, the magnets 14A and 14B are attached to the cover members 13A and 13B (flexible sheet members) with their edges aligned. The canvas layer is made to be the outer surface (outer peripheral surface).

  Auxiliary cover members 13A and 13B are affixed at regular positions of holder cover 1 (upper and lower cover members 11 and 12). Here, since the attachment hole 15 is formed in the holder cover 1, the positions corresponding to the attachment holes 15 are marked on the auxiliary cover members 13A and 13B, and then the auxiliary cover members 13A and 13B are removed. A through hole 16 that penetrates the magnets 14A and 14B together with the flexible sheet material is formed at a position by a punch. Here, in order to easily form the through hole 16, it is desirable to provide a square wood on the lower side and perform hole processing.

  Then, the auxiliary cover members 13A and 13B are attached to the holder cover 1 at regular positions, and the insertion fasteners 17 are inserted from the outer surface side of the auxiliary cover members 13A and 13B so that they can be inserted and removed.

  In addition to the above, the present invention can be modified as follows.

  (i) In the above embodiment, the plastic cover fastener 17 is used for temporarily fixing the auxiliary cover members 13A and 13B so that the attachment and removal can be performed with one touch and the work is facilitated. It is also possible to use known locking tools. Needless to say, the auxiliary cover members 13A and 13B may be temporarily fixed at two positions on the upper side and may be temporarily fixed at four positions on the upper and lower sides.

  (ii) As shown in FIG. 2, without providing a magnet on the butt joint side between the cover members of each of the auxiliary cover members, one of the auxiliary cover members 23A and 23B to be butted. A projecting portion 23Ba that projects by a length of about 25 mm may be provided at the central portion 8 of the joint side portion (the portion between both side edges where the magnet is provided). In this way, the overlapping portion ΔL of the two auxiliary cover members 23A and 23B is about 25 mm, and the gap near the joint portion can be hidden during attachment.

It is a disassembled perspective view which shows the cover attachment structure of the curve conveyor which has the curved conveyance path | route by a conveyor belt. It is explanatory drawing which shows the other Example of the joint part of an auxiliary | assistant cover member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Holder cover 11 Upper cover member 12 Lower cover member 13A, 13B Auxiliary cover member 14A, 14B Magnet 23A, 23B Auxiliary cover member

Claims (3)

A cover body is provided so as to cover the outer peripheral side of the curved conveyance path by the conveyor belt, and an opening is formed in the cover body so as to face a portion where a belt guide mechanism for forming the curved conveyance path on the conveyor belt is disposed. The auxiliary cover member that closes the opening is a cover installation structure for a curved conveyor that is detachably attached to the cover body,
The auxiliary cover member is made of a flexible sheet material that can be bent along the curved conveyance path with a magnet attached thereto, and is detachably attached to the cover body by the magnet. Curve conveyor cover mounting structure. The flexible sheet material is formed by laminating cover layers above and below the core layer layer,
2. The cover mounting structure for a curve conveyor according to claim 1, wherein the magnet is fixed to the cover layer by a double-sided tape or an adhesive. The auxiliary cover member, while a plurality of through-holes through said magnet and said flexible sheet material in a portion where the magnet is provided is formed, a plurality in the cover body to correspond to the through hole Mounting holes are formed,
By inserting and removing can be inserted and the locking tool through the through hole of the auxiliary cover member into the mounting hole of the cover body, characterized in that the auxiliary cover member is configured it can be temporarily fixed to the cover body The cover mounting structure for a curved conveyor according to claim 1 or 2.

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