JP2005225590A - Conveyor facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conveyor facility capable of lessening the abutting sound generated when a chain on the return path abuts to supporting plates by preventing the chain on the return path from dangling. <P>SOLUTION: The conveyor facility is equipped with a pair of supporting plates 38 installed capable of moving up and down about a fixed point M as fulcrum and consisting of a flat plate part 38A and a curved part 38B, a pair of guide sprockets 35 installed down aslant at the downstream end in the transporting direction X of a driving sprocket 25 and pinching the curved part 38B of each supporting plate 38 together with a left and a right roller 29 turned down around from the driving sprocket 25, and a position adjusting means 39 to adjust downward movement of the supporting plates 38 by suppressing the rotation of the guiding sprocket 35 in association with movement down aslant of the curved part 38B by the rollers 29, whereby the chain 26 on the return path is prevented from dangling by suppressing the descent of the supporting plates 38 by the position adjusting means 39. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a conveyor facility used for conveying articles, for example.

For example, Patent Document 1 is disclosed as a conventional conveyor facility.
This conveyor equipment is composed of upper frame material and lower frame material arranged on a pair on both sides, an intermediate frame member that connects the upper and lower and left and right frame materials, and legs that are connected downward from both lower frame materials. A main body frame, a left and right driven shaft rotatably arranged at the start end of the frame main body, a drive shaft in the same direction rotatably arranged at the terminal end of the frame main body, and a drive shaft It is composed of an interlocking drive motor, etc., and a chain is arranged between the opposing portions at both ends of the driven shaft and the drive shaft via sprockets provided on the driven shaft and the drive shaft, respectively. Has been.

  A large number of guide bars are installed between the left and right chains, with the length direction being the direction perpendicular to the main transport path, which is the movement direction of both chains. A movable body that can reciprocate in a direction orthogonal to the conveyance path is externally fitted.

  Under this configuration, when the electric motor is driven and the drive shaft is driven to rotate, both chains move through each sprocket, so that the articles supplied on the guide bar can be conveyed on the main conveyance path. it can.

In addition, a branch conveyor that is inclined outward and inferior to the main transport path is connected to both sides outward of the frame body, and the main transport path is moved while transporting the movable body group in the transport direction. By traversing from one side to the other, the article is pushed sideways and the article is delivered to the branch conveyor.
Japanese Patent Laid-Open No. 9-52621

  However, according to the conventional configuration described above, when starting up the conveyor equipment, the chain located below the sprocket provided on the drive shaft, that is, the chain on the return path that moves in the direction opposite to the conveying direction of the article occurs. As a result, there is a problem that the chain hangs down below the sprocket.

  In addition, when a support plate that supports the chain on the return path side is provided below the sprocket provided on the drive shaft, when the chain hangs below the sprocket, it abuts on the support plate and generates a contact sound. There is a problem that this contact noise increases as the length of the main frame increases (longer) and the conveying speed increases.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a conveyor facility that prevents drooping of the return-side chain and can significantly reduce the contact noise between the return-side chain and the support plate.

  In order to achieve the above-described object, according to a first aspect of the present invention, there is provided a conveyor equipment according to claim 1, wherein a main body frame disposed opposite to and parallel to the longitudinal direction is provided, with the article conveying direction as a longitudinal direction. An endless rotating body is stretched between the pair of left and right driven wheels disposed at the upstream end in the transport direction and the pair of left and right drive wheels disposed at the downstream end in the transport direction of the main body frame, and A plurality of article supports that support the article are provided across the moving bodies, and a rotating body that supports the article support is connected to the endless rotating body at each of left and right ends of each article support. , A conveyor facility for transporting the article supported by the article support by driving the endless rotating body by the rotation of the driving wheel, wherein the longitudinal direction from the lower position of the driving wheel Arrange along A horizontal flat plate portion and a curved portion curved upward from one end of the flat plate portion along the outer shape of the driving wheel, A pair of support plates, each of which supports the rotating body and is provided so that the other end of the flat plate portion is fixed to the main body frame; A pair of guide wheels disposed at an obliquely lower position downstream in the conveying direction of the wheel, and sandwiching the curved portion of each of the support plates together with left and right rotating bodies that have turned downward from the drive wheel; , Characterized in that it comprises position adjusting means for suppressing the rotation of the guide wheel accompanying the downward movement of the bending portion by the rotating body and adjusting the downward movement of the support plate. Is.

  According to the above configuration, when the conveyor equipment is driven, the endless rotating body on the return path located below the driving wheel is extended, and the support plate supporting the rotating body connected to the endless rotating body is the weight of the article support. Therefore, when the support point is to be lowered with the fixed point as a fulcrum, the support plate is moved upward by the position adjusting means, and the guide wheel is rotated by the rotating member in the diagonally downward movement of the curved portion of the support plate. Is suppressed, that is, the lowering of the support plate is suppressed, and the drooping of the endless rotating body on the return path is prevented.

The invention described in claim 2 is the invention described in claim 1, characterized in that the support plate is made of urethane rubber.
According to the above configuration, since the support plate is made of urethane rubber, when the left and right rotating bodies that have been turned downward from the driving wheel body land on the supporting plate, the impact of the rotating body is reduced.

The invention according to claim 3 is the invention according to claim 1 or 2, wherein a connecting member for connecting the pair of left and right support plates is provided.
According to the above configuration, since the left and right support plates are connected to each other at a predetermined interval in the longitudinal direction in a direction orthogonal to the transport direction, the vertical movements of the left and right support plates are synchronized. In addition, since the vertical position is the same on the left and right, and the support plate is uniformly supported on the left and right, the article support is tilted to the left and right and a load is prevented from being applied to one endless rotating body.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein one end of the position adjusting means is fixed to the fixed point, and the position is adjusted from the fixed point. A pair of left and right belt-like members that are provided along the lower surface of the support plate and the upper surface of the guide wheel to the lower position of the guide wheel, and support the support plate from below, and are connected to the other end of the belt-like member One or more adjusting members are provided.

  According to the above configuration, the degree of hanging of the support plate is adjusted by providing the plurality of adjusting members at the other end of the belt-like member in consideration of the length of the main body frame, the conveyance speed of the article, and the like.

  When the conveyor device of the present invention is driven, the endless rotating body on the return path located below the driving wheel is extended, and the weight of the article support body is lowered when the support plate is lowered with the fixed point as a fulcrum. Since the lowering of the support plate is suppressed by the adjusting means, it is possible to prevent the endless rotating body from drooping on the return path side, and the contact noise of the endless rotating body can be reduced.

Below, the conveyor installation in embodiment of this invention is demonstrated, referring drawings.
As shown in FIGS. 1, 2, and 3, in a slat type conveyor (an example of a conveyor facility), a conveyance direction X of an article 7 is a longitudinal direction, and a lateral direction Y perpendicular to the conveyance direction X is a short direction, The main body frame 1 disposed in parallel with the longitudinal direction is composed of an upper frame material 2 and a lower frame material 3 disposed on both sides of the main body frame 1 respectively, and between the upper and lower frame materials 2 and 3. , A horizontal connecting member (not shown) for connecting the left and right of the upper frame material 2 and the lower frame material 3, and a leg 5 connected downward from the lower frame material 3. Etc.

  As shown in FIG. 4, the lower frame material 3 is formed of an aluminum molded product having a rectangular cross section, and forms an upright portion 11 formed in a vertical direction at an inward position. Further, a return-side guide portion (not shown) for supporting and guiding a guide bar (an example of an article support) 27 (described later) is formed. Furthermore, an outward downward dovetail groove 12 is formed at the outer lower end of the upright portion 11. The legs 5 are connected to the left and right lower frame members 3 by bolts and nuts using outer downward dovetails 12.

  As shown in FIGS. 1 and 3, a driven shaft 21 is rotatably disposed at the upstream end in the transport direction of the main body frame 1 so as to be supported by both lower frame members 3 and in the left-right direction Y, and at the downstream end in the transport direction. Is supported by both lower frame members 3, and a drive shaft 22 is rotatably disposed in the left-right direction Y. A drive motor 23 is interlocked to the drive shaft 22. Further, a pair of left and right driven sprockets (an example of a driven wheel) 24 are provided at both ends of the driven shaft 21, and a pair of left and right drive sprockets (an example of a driving wheel) are provided at both ends of the drive shaft 22. ) 25 is provided.

  A pair of left and right chains (an example of an endless rotating body) 26 are stretched between opposing portions at both ends of the drive shaft 21 and the driven shaft 22 via a driven sprocket 24 and a drive sprocket 25. A plurality of guide bars (an example of an article support) 27 that supports the article 7 is provided between the chains 26, that is, in the left-right direction Y orthogonal to the conveyance direction X that is the movement direction of both chains 26. ing. Each guide bar 27 is provided with a movable body 28 that is guided by the guide bar 27 and can reciprocate in the left-right direction Y. In addition, rollers (an example of a rotating body) 29 that support the guide bar 27 are connected to the chain 26 at the left and right ends of the guide bar 27, respectively. The roller 29 is covered with a belt whose outer peripheral portion is formed of urethane rubber, and along the forward-side guide portion (not shown) provided in the transport direction X along the upper frame material 2 and along the lower frame material 3. Then, the vehicle travels on the return path guide portion provided in the transport direction X.

  As shown in FIGS. 3, 4, 5, and 6, a guide bracket (an example of a guide member) 31, a first side guide 32, A two-side guide 33, a guide sprocket (an example of a guide wheel) 35, a support rail 37, a support plate 38, a position adjusting means 39, a connecting member 40, and the like are provided.

  The guide bracket 31 is provided along the longitudinal direction from the lower position of the drive sprocket 25 under the outer downward dovetail groove 12 of the lower frame member 3, and is formed of a plate material having an inverted L-shaped cross section. Yes.

The said 1st side guide 32 is provided in the vertical direction adjacent to the inner side of the guide bracket 31, and is formed of the plate material of a rectangular flat plate shape.
The second side guide 33 is provided vertically on the same plane adjacent to the first side guide 32 and upstream in the transport direction, and is provided adjacent to the inner side of the guide bracket 31, and one end side is the first side guide 33. The one side guide 32 has a width, and the other end is formed of a flat plate material narrower than one end.

  The support plate 38 is made of urethane rubber, and has a horizontal flat plate portion 38A disposed along the longitudinal direction from a lower position of the drive sprocket 25 and an outer shape of the drive sprocket 25 from one end of the flat plate portion 38A. And the left and right rollers 29 formed around the lower portion of the drive sprocket 25, and the other end of the flat plate portion 38A is the lower frame member 3 of the main body frame 1. The fixed position is a fixed point M, and the fixed point M is provided as a fulcrum so as to be movable up and down.

  The guide sprocket 35 is disposed at an obliquely lower position on the downstream side in the transport direction of the drive sprocket 25 via a guide shaft 34 supported at the downstream end in the transport direction of the guide bracket 31 and on the upper position of the guide bracket 31. The curved portion 38B of each support plate 38 is sandwiched together with the left and right rollers 29 that have turned downward from the drive sprocket 25.

The support rail 37 is formed of a member having a T-shaped cross section, and is provided inside the guide bracket 31 via a plurality of rectangular plate-like collars (an example of a connecting body) 36.
The connecting member 40 connects a pair of left and right support plates 38. When the left and right support plates 38 are connected, the end of the connecting member 40 is connected to the support plate 38 belt body 41 as shown in FIG. In this state, the bolts and nuts 43 are connected.

  One end of the position adjusting means 39 is fixed to a fixed point M, and is provided from the fixed point M to the lower position of the guide sprocket 35 along the lower surface of the support plate 38 and the upper surface of the guide sprocket 35. A pair of left and right belt bodies (an example of a belt-like member) 41 supported from below and one or more balance weights (an example of an adjustment member) 42 connected to the other end of the belt body 41 are formed. Then, the rotation of the guide sprocket 35 accompanying the downward movement of the curved portion 38B by the roller 29 is suppressed, and the downward movement of the support plate 38 is adjusted. As shown in FIG. 6, the support plate 38 and the belt body 41 are connected by bolts and nuts 43 at a plurality of locations.

  As shown in FIG. 7, when connecting the balance weight 42 to the other end of the belt body 41, first, two vertical through holes 41 a formed in the other end of the belt body 41 and the upper and lower formed in the plate body 44. The two through holes 44a in the direction and the two through holes 42a in the vertical direction formed at both ends of the balance weight 42A are connected to each other, and the respective members are connected by bolts and nuts 45. Then, the bolt body 46 is screwed into the insertion hole 42b formed in the balance weight 42A, and the balance weight 42B is attached so that the upper end portion of the long hole 42c formed in the balance weight 42B is supported by the bolt body 46a. And adjusting the number of balance weights 42B, that is, adjusting the load applied to the other ends of the left and right belt bodies 41, and attaching the balance weight 42B to the balance weight 42A by the bolt bodies 46a and the nut bodies 46b. By adjusting the load applied to the other ends of the left and right belt bodies 41, the degree of change in the vertical direction of the support plate 38 is adjusted.

The belt body 41 is made of urethane rubber with a polyester woven cloth as a core, and has a long life design that is thin and hardly stretches.
Further, as shown in FIG. 1, branch conveyors 52A and 52B that form branch paths 51A and 51B that are inclined with respect to the conveyance direction X and inclined toward the lower side are connected to both sides of the frame body 1. Has been. These branch conveyors 52A and 52B have a large number of rollers 53 that are rotationally driven by a driving device.

Below, the conveyance effect | action in above-described embodiment is demonstrated.
First, before carrying out the carrying work, five (a plurality) balance weights 42 are provided at the other end of the belt body 41 in consideration of the length of the main body frame 1 and the carrying speed of the article 7, and so on. When the conveyor is driven, the return chain 26 located below the drive sprocket 25 extends, and the support plate 38 supporting the roller 29 connected to the chain 26 supports the fixed point M by the weight of the guide bar 27. As a result, the degree of drooping is adjusted so that the support plate 38 does not droop greatly.

  In the present embodiment, five balance weights 42 are used. However, since the amount of sag of the chain 26 on the return path side at the downstream end in the transport direction differs depending on the length of the main body frame 1 and the transport speed of the article 7, the weight balance is different. It is necessary to change the number of 42 appropriately.

  When the article 7 is conveyed by the slat type conveyor (shoe slide type sorting device) described above, the electric motor 23 is driven and the drive shaft 22 is driven to rotate, so that the left and right sides are driven via the driven sprocket 24 and the driving sprocket 25. Both the chains 26 are rotated, and the guide bars 27 are circulated and moved in a state of being supported and guided by the forward path side guide part and the backward path side guide part by the rotation of both the chains 26, and are supplied onto the guide bar 27 at the start end part. The article 7 is conveyed in the conveyance direction X. The movable body 28 that moves integrally with the group of guide bars 27 performs a sorting operation of the articles 7 by a plurality of the movable bodies 28 reciprocally moving in the length direction of the guide bars 27 at the same time.

  When the slat type conveyor that performs such conveyance is driven, the chain 26 on the return path located below the drive sprocket 25 extends, and the chain 26 hangs down due to the weight of the guide bar 27. The left and right rollers 29 that are connected to the chain 26 and land on the curved portion 38B of the support plate 38 press the support plate 38 downward by dropping the chain 26. The supporting belt body 41 descends with the fixed point M as a fulcrum.

  At this time, the belt body 41 moves the belt body 41 and the support plate 38 upward by the weight (gravity) of the five (a plurality of) balance weights 42 connected in advance to the other end of the belt body 41. Therefore, the rotation of the guide sprocket 35 accompanying the movement of the curved portion 38B in the diagonally downward direction by the roller 29 is suppressed, that is, the lowering of the support plate 38 is suppressed.

  As a result, when the support plate 38 supporting the chain 26 on the return path is lowered when the slat type conveyor is driven, the belt plate 41 and the balance weight 42, that is, the position adjusting means 39 suppresses the lowering of the support plate 38. Therefore, drooping of the chain 26 on the return path side is prevented.

  Further, since the support plate 38 is made of urethane rubber, the impact of the roller 29 is reduced when the left and right rollers 29 that have come down from the drive sprocket 25 land on the support plate 38.

  Further, since the left and right support plates 38 are connected to a plurality of connecting members 40 in a direction Y orthogonal to the transport direction X at predetermined intervals in the longitudinal direction, the vertical movement of the left and right support plates 38 is synchronized. The vertical position is the same on the left and right.

  Here, as shown by a broken line in FIG. 3, when the support plate 38 is lowered too much, the support plate 38 and the belt body 41 come into contact with the upper portion of the support rail 37 as shown in FIG. 6. At this time, since the belt body 41 formed of urethane rubber is in contact with the support rail 37, the impact on the support rail 37 can be reduced, and the contact noise can be reduced.

  As described above, according to the embodiment, when the slat type conveyor is driven, the chain 26 on the return path located below the drive sprocket 25 extends, and the weight of the guide bar 27 causes the support plate 38 to have the fixed point M as a fulcrum. Since the position adjusting means 39 suppresses the lowering of the support plate 38 when the lowering of the chain 26 is lowered, the lowering of the chain 26 on the return path can be prevented. Also in the case of contact, since the belt body 41 and the receiving rail 37 are in contact with each other, the contact sound can be reduced.

  Further, according to the embodiment, when the roller 29 whose outer peripheral portion is formed of urethane rubber is landed on the support plate 38, the roller 29 is received by the support plate 38 formed of urethane rubber. 29 impacts can be reduced.

  Further, according to the embodiment, the vertical movement of the left and right support plates 38 can be synchronized by connecting the pair of left and right support plates 38 with the connecting member 40, and is stable with respect to the left and right support plates 38. Since the vertical position can be adjusted and the support plate 38 can be supported uniformly left and right, it is possible to prevent the guide bar 27 from tilting left and right and applying a load to one chain 26.

  In addition, according to the embodiment, the support plate 38 is provided for each conveyor facility by providing a plurality of balance weights 42 at the other end of the belt body 41 in consideration of the length of the main body frame 1 and the conveyance speed of the articles 7. The degree of drooping can be adjusted, and therefore the chain 26 on the return path can be prevented from drooping greatly.

  In the above embodiment, one or more balance weights 42 are used as the adjustment member connected to the other end of the belt body 41, but one end of the adjustment member is connected to the other end of the belt body 41, The other end may be constituted by a spring or an air cylinder connected to the ground.

Moreover, in the said embodiment, although the slat type conveyor (shoe slide type | mold sorting apparatus) was used as conveyor equipment, another kind of chain conveyor may be sufficient.
In the above-described embodiment, the form in which the branch paths 51A and 51B are formed on both sides outward in the transport direction X is shown. However, the form in which one or a plurality of branch paths are formed only on one of them. It may be.

Moreover, in the said embodiment, although the roller 29 is covered with the strip | belt body in which the outer peripheral part was formed with urethane rubber, you may form the roller 29 whole with urethane rubber.
In the above embodiment, the support plate 38 is made of urethane rubber. However, the present invention is not limited to this, and the material that can reduce the impact of the roller 29 or the impact of the roller 29 can be reduced. Further, a material that can absorb the sound that the roller 29 contacts may be used.

It is a top view of the conveyor installation in embodiment of this invention. It is a side view of the conveyor equipment. It is a principal part in the conveyance direction downstream end of the conveyor equipment, (a) is a plan view, (b) is a side view. It is AA sectional drawing in the conveyor equipment. It is BB sectional drawing in the conveyor equipment. It is CC sectional drawing when the support plate hangs down in the conveyor equipment. It is a perspective view of the position adjustment means in the conveyor equipment.

Explanation of symbols

1 body frame 7 article 24 driven sprocket (driven wheel)
25 Drive sprocket (drive wheel)
26 Chain (Endless rotating body)
27 Guide bar (article support)
29 Roller (Rotating body)
35 Guide sprocket (Guide wheel)
38 support plate 38A flat plate portion 38B bending portion 39 position adjusting means 40 connecting member 41 belt body (band member)
42 Balance weight (adjustment member)
X Transport direction M Fixed point

Claims (4)

The main body frame disposed opposite to and parallel to the longitudinal direction is provided with the conveying direction of the article as the longitudinal direction,
An endless rotating body is stretched between the pair of left and right driven wheels disposed at the upstream end in the transport direction of the main body frame and the pair of left and right drive wheels disposed at the downstream end in the transport direction of the main body frame,
Providing a plurality of article supports for supporting the article across the left and right endless rotating bodies;
A rotating body that supports the article support is connected to the endless rotating body at the left and right ends of each article support,
Conveyor equipment for conveying an article supported by the article support by driving the endless rotating body by turning the driving wheel,
Formed from a horizontal flat plate portion arranged along the longitudinal direction from the lower position of the driving wheel, and a curved portion bent upward from one end of the flat plate portion along the outer shape of the driving wheel. And supporting the left and right rotating bodies that have wrapped around the driving wheel, the position where the other end of the flat plate portion is fixed to the body frame as a fixing point, and the fixing point as a fulcrum A pair of support plates provided to be movable up and down;
A pair of guides that are disposed at an obliquely lower position at the downstream end in the conveying direction of the driving wheel and sandwich the curved portion of each support plate together with the left and right rotating members that have turned downward from the driving wheel. A ring,
A conveyor comprising position adjusting means for suppressing rotation of the guide wheel accompanying the downward movement of the curved portion by the rotating body and adjusting the downward movement of the support plate. Facility. The conveyor equipment according to claim 1, wherein the support plate is made of urethane rubber. The conveyor equipment according to claim 1, wherein a connecting member that connects the pair of left and right support plates is provided. The position adjusting means includes
One end is fixed to the fixing point, and is provided from the fixing point to the lower position of the guide wheel along the lower surface of the support plate and the upper surface of the guide wheel, and supports the support plate from below. A pair of strip members;
The conveyor equipment according to any one of claims 1 to 3, further comprising one or more adjusting members connected to the other end of the belt-like member.

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