JP2009256048A - Friction drive type workpiece conveying system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a friction drive type workpiece conveying system capable of assuring a propulsive force adequate for travelling of a carrier when the workpiece is hung down and conveyed by the carrier, and performing ascending inclination conveyance. <P>SOLUTION: In this friction drive type workpiece conveying system, the workpiece is hung down and conveyed by the travelling of the multiple joint type carrier 4 in a conveyance rail 3 by a plurality of friction drive means 12. The multiple joint type carrier 4 is formed by connecting a number of carrier bars 5 with a friction plate 6 on the surface side by universal joints 9. The friction drive means 12 consists of an endless friction belt 15 circulating and travelling by being wound onto a driving side roller 13 and a driven side roller 14, and a pressing means 16 made of an airbag 17 pressing and bringing the lower side travelling belt 15a of the endless friction belt into face-contact with the friction plate 6. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a friction-driven workpiece conveyance system that can suspend a conveyance object (work) from a carrier traveling along a conveyance line and convey it, and in particular, friction of an articulated carrier along the conveyance line. The present invention relates to a friction drive type work transport system that travels by driving means and suspends and transports a work on this articulated carrier.

  Conventionally, as a friction drive type conveying device that suspends and conveys a workpiece, a plurality of reverse J-shaped hook members that slide are provided on a conveying rail having a circular cross section extending along a conveying line. A driven bar in which a conveyed object (work) is suspended from a hook-like hook member is fixed horizontally, and the driven bar is moved by a friction driving means together with an inverted J-shaped hook member to be suspended on the driven bar. There is known a friction drive type trolley conveyor that conveys a slab (see Patent Document 1).

The main part of the conventional friction driving means is shown in FIGS. In the friction drive type conveying device, a driven bar 23 for suspending a conveyed product is horizontally mounted between a plurality of reverse J-shaped hook members 22, 22 slidably provided on the conveying rail 21, and the friction driving means 24 is used. The driven bar 23 is caused to travel. The friction drive means 24 is configured so that the driven bar 23 is sandwiched between both side surfaces by a driving friction roller 24a and a free roller 24b. By disposing a large number of the friction drive means 24 along the transport line, the transport driven bar 23 is caused to travel by the friction roller 24a, and the transported object hung on the driven bar 23 is transported.
Japanese Patent No. 3589594

  The friction drive means 24 used in the conventional friction drive type conveying device has a structure in which the driven bar 23 is sandwiched from both sides by a driving friction roller 24a and a free roller 24b. As shown, the driving friction roller 24a and the driven bar 23 are in line contact L. For this reason, sufficient propulsive force cannot be ensured and horizontal conveyance is possible, but it is difficult to perform uphill and inclined conveyance, especially steep uphill and inclined conveyance, and in the case of a three-dimensional conveyance line including an uphill and inclined conveyance path There is a problem that the workpiece cannot be conveyed.

  The present invention solves the problems of the prior art as described above, and when a work is suspended by a carrier and transported, sufficient propulsive force can be secured for traveling of the carrier, and climbing and tilting can be performed. Accordingly, an object of the present invention is to provide a friction-driven workpiece conveyance system that can convey a workpiece even on a three-dimensional conveyance line including an uphill inclined conveyance path, a horizontal conveyance path, a curved conveyance path, and the like.

  In order to solve the above-mentioned problem, the present invention according to claim 1 is directed to a plurality of frictions in which an articulated carrier capable of traveling in a transport rail disposed on a transport line is spaced apart from the transport line. In the friction drive type work transport system that travels by driving means and suspends and transports a work by a support member provided on the articulated carrier, the articulated carrier is a carrier bar having a friction plate on the front side. The friction drive means includes an endless friction belt that wraps around a driving roller and a driven roller, and travels below the endless friction belt. The friction drive type work conveyance system is constituted by pressing means for pressing the belt against the friction plate to bring it into surface contact.

  According to a second aspect of the present invention, in the friction drive type work transfer system according to the first aspect of the present invention, the pressing means slides in contact with an airbag and a lower traveling belt of the endless friction belt. The lower traveling belt of the endless friction belt is pressed against the friction plate through the metal plate by the pressing force of the airbag. is there.

  According to a third aspect of the present invention, there is provided the friction drive type work conveying system according to the first or second aspect, wherein the lower traveling belt of the endless friction belt is a friction plate of at least two carrier bars. Are configured to contact with each other at the same time.

  According to a fourth aspect of the present invention, in the friction drive type work conveyance system according to any one of the first to third aspects, the articulated carrier includes a plurality of pairs of wheels, and the conveyance rail includes: It is composed of a pair of U-shaped rails, and the articulated carrier is configured to travel while being supported by the wheels in the transport rail.

  According to a fifth aspect of the present invention, in the friction drive type work conveyance system according to any one of the first to fourth aspects, the conveyance line includes a horizontal conveyance path, an inclined conveyance path, a curved conveyance path, and the like. This is a three-dimensional transfer line.

  According to a sixth aspect of the present invention, there is provided the friction drive type work conveyance system according to any one of the second to fifth aspects, wherein the friction drive means is disposed between the horizontal conveyance path and the inclined conveyance path. Is configured such that the metal plate is curved in advance following the curved conveyance path between the horizontal conveyance path and the inclined conveyance path.

  According to the first aspect of the present invention, the multi-joint type carrier that can travel in the transport rail disposed in the transport line travels by a plurality of friction drive means disposed separately from the transport line, The articulated carrier is formed by connecting a large number of carrier bars having friction plates on the front side with a universal joint, and the friction driving means is endlessly wound around a driving side roller and a driven side roller to circulate. And a pressing means for pressing the lower running belt of the endless friction belt against the friction plate to bring it into surface contact with the lower end of the endless friction belt. Makes a great thrust on the articulated carrier. As a result, the multi-joint type carrier with the workpiece suspended can be reliably run on the climbing and inclined conveyance path.

  According to the friction drive type work conveyance system of the present invention according to claim 2, in addition to the effect produced by the friction drive type work conveyance system of the present invention according to claim 1, the pressing means constituting the friction drive means is The airbag and a bendable metal plate that is in contact with and slides on the lower running belt of the endless friction belt, and the endless shape via the metal plate is pressed by the airbag. Since the lower running belt of the friction belt is pressed against the friction plate, the friction drive means can be reduced in size. In addition, since the pressing force can be controlled by the airbag, the friction drive means arranged in the horizontal conveyance path or the inclined conveyance path can have the same structure.

  According to the friction drive type work conveyance system of the present invention according to claim 3, in addition to the effect exhibited by the friction drive type work conveyance system of the present invention according to claims 1 and 2, the lower side of the endless friction belt Since the running belt contacts the friction plates of at least two carrier bars at the same time, the lower running belt of the friction belt can be pressed evenly to the friction plates of the adjacent carrier bars by the pressing force of the airbag evenly. At the same time, it is possible to simultaneously apply a driving propulsive force due to friction of the endless friction belt 15 to a plurality of adjacent friction plates. As a result, a large driving force can be efficiently applied to the articulated carrier.

  According to the friction drive type work conveyance system of the present invention according to claim 4, in addition to the effect exhibited by the friction drive type work conveyance system of the present invention according to claims 1 to 3, the articulated carrier is a pair of In addition to having a large number of wheels, the transport rail is composed of a pair of U-shaped rails, and the articulated carrier travels while being supported by the wheels in the transport rail. It can be hung and transported by an articulated carrier.

  According to the friction drive type work conveyance system of the present invention concerning Claim 5, in addition to the effect which the friction drive type work conveyance system of the present invention concerning Claims 1 thru / or 4 shows, the conveyance line is a horizontal conveyance path, Since it is a three-dimensional transfer line including an inclined transfer path, a curved transfer path, etc., it is possible to transfer a workpiece on any transfer line.

  According to the friction drive type work conveyance system of the present invention concerning Claim 6, in addition to the effect which the friction drive type work conveyance system of the present invention concerning Claims 2 thru / or 5 shows, the horizontal conveyance path and the inclination conveyance path Since the metal plate is curved in advance following the curved conveyance path between the horizontal conveyance path and the inclined conveyance path, the friction drive means arranged between the horizontal conveyance path and the inclined conveyance path Even in the curved conveyance path, a propulsive force can be reliably applied to the articulated carrier.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic front view of a friction drive type work transfer system according to an embodiment of the present invention, FIG. 2 is a front view of friction drive means (motor not shown) in a horizontal transfer path, and FIG. 4 is a front view of friction drive means (motor not shown) in the inclined conveyance path, FIG. 5 is a plan view of the articulated carrier in the straight conveyance path, and FIG. 6 is an articulated carrier in the curved conveyance path. FIG. 7 is a sectional view of the friction belt, and FIG. 8 is a partial plan view of the friction belt.

  As shown in FIG. 1, the friction drive type work conveyance system 1 includes a horizontal conveyance path 2a (see FIG. 2), a curved conveyance path 2b, an inclined conveyance path 2c, a straight conveyance path 2d (see FIG. 5), and a curved conveyance. Friction in which a plurality of articulated carriers 4 capable of traveling in the transport rail 3 disposed on the three-dimensional transport line 2 including the path 2e (see FIG. 6) are disposed apart from the transport line 2 The workpiece W travels by the driving means 12, and the work W is suspended and conveyed by the support member 7 and the suspension arm 8 provided on the multi-joint type carrier 4.

  As shown in FIGS. 2 and 3, the multi-joint type carrier 4 is formed by connecting a large number of carrier bars 5 having friction plates 6 provided on the front side thereof by means of universal joints 9 corresponding to joints. . The multi-joint type carrier 4 includes a plurality of pairs of wheels 10 and 10, and the pair of wheels 10 and 10 are provided on both outer portions of the universal joint 9. The transport rail 3 is formed by a pair of U-shaped rails 3 a and 3 a, and the articulated carrier 4 travels while being supported by the wheels 10 and 10 in the transport rail 3.

  As shown in FIGS. 2 to 4, the friction drive means 12 includes an endless friction belt 15 that circulates around the drive side roller 13 and the driven side roller 14, and a bottom of the endless friction belt 15. The side running belt 15a is constituted by pressing means 16 that presses against the friction plate 6 of the carrier bar 5 to bring it into surface contact. The friction belt 15 is commercially available, and as shown in FIGS. 7 and 8, a cover rubber 15d having an uneven surface is integrally formed on a base fabric 15c. The lower running belt 15a is of a length that is in contact with the friction plates 6 of at least two carrier bars 5 of the multi-joint type carrier 4 at the same time. The length may be an appropriate length depending on whether it is disposed on the inclined conveyance path, and all may have the same length. 2 and 4, reference numeral 14a denotes a free roller, 15b denotes a return upper traveling belt of the friction belt 15, and 20 denotes a conveyor frame.

  As shown in FIGS. 2 and 3, the pressing means 16 includes an airbag 17 and a bendable metal plate 18 that slides in contact with the lower running belt 15 a of the endless friction belt 15. The airbag 17 is disposed inside the endless friction belt 15, the upper side is held by the pressing plate 19, and the lower side is in contact with the metal plate 18. The metal plate 18 is preferably made of stainless steel, and is bent downward and curved by the pressing force of the airbag 17. The metal plate 18 slides in contact with the lower traveling belt 15 a of the endless friction belt 15.

  The lower traveling belt 15 a of the endless friction belt 15 is pressed against the friction plate 6 of the carrier bar 5 through the metal plate 18 by the pressing force of the pressing means 16 on the airbag 17. In this case, the lower running belt 15a of the endless friction belt 15 simultaneously contacts the friction plates 6 of at least two carrier bars 5 of the articulated carrier 4 with uniform pressure. In this way, the driving propulsive force due to the friction of the endless friction belt 15 can be efficiently exhibited.

  As shown in FIG. 1, the friction drive means 12 is also disposed in the curved conveyance path 2b between the horizontal conveyance path 2a and the inclined conveyance path 2c. In this case, the friction drive means 12 has the metal plate 18 curved in advance along the curved conveyance path 2b. In this way, a propulsive force can be reliably applied to the articulated carrier 4 also in the curved conveyance path 2b between the horizontal conveyance path 2a and the inclined conveyance path 2c.

  The effect of the friction drive type workpiece conveyance system 1 which consists of the said structure is as follows. An articulated carrier 4 capable of traveling on a conveyance rail 3 arranged on the conveyance line 2 suspends and conveys the workpiece W. The multi-joint type carrier 4 travels while the lower traveling belt 15a of the endless friction belt 15 in which the friction drive means 12 circulates on the friction plate 6 of the carrier bar 5 is pressed by the pressing means 16. At this time, the lower traveling belt 15a is pressed against the friction plate 6 of the carrier bar 5 by the airbag 17 and the metal plate 18 constituting the pressing means 16, and the lower traveling belt 15a and the friction plate 6 are in surface contact. Therefore, a large driving force can be given to the articulated carrier 4. Therefore, the workpiece W can be transported even on a steep climbing and inclined transport path, and as a result, a tertiary including a horizontal transport path 2a, a curved transport path 2b, an inclined transport path 2c, a straight transport path 2d, a curved transport path 2e, and the like. The workpiece W can be transferred along the original transfer line 2.

  The pressing means 16 constituting the friction drive means 12 is composed of an airbag 17 and a bendable metal plate 18 that contacts and slides on the lower running belt 15a of the endless friction belt 15, so that a large propulsion is achieved. It is possible to reduce the size of the friction drive means 12 that can apply force. Further, since the lower traveling belt 15a of the endless friction belt 15 is pressed against the friction plate 6 of the carrier bar 5 through the metal plate 18 by the pressing force of the airbag 17, the pressing force by the airbag 17 can be controlled. It becomes possible, and the friction drive means 12 arranged in the horizontal conveyance path 2a or the inclined conveyance path 2c can have the same structure.

  Further, since the lower running belt 15a of the endless friction belt 15 simultaneously contacts the friction plates 6 of the plurality of carrier bars 5, the lower running belt of the friction belt 15 contacts each of the friction plates 6 of the adjacent carrier bars 5. 15a can be pressed evenly by the pressing force of the airbag 17 without variation. As a result, the driving propulsive force due to the friction of the endless friction belt 15 can be simultaneously applied to the plurality of adjacent friction plates 6, and a large propulsive force can be efficiently applied to the articulated carrier.

It is a schematic front view of the friction drive type work conveyance system of the example of the present invention. It is a front view of the friction drive means principal part in a horizontal conveyance path. It is the sectional view on the AA line in FIG. It is a front view of the friction drive means principal part in an inclined conveyance path. It is a top view of the articulated carrier in a straight conveyance path. It is a top view of the articulated carrier in a curve conveyance path. It is sectional drawing of a friction belt. It is a partial top view of a friction belt. It is principal part sectional drawing of the conventional friction drive means. It is a principal part top view of a friction drive means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Friction drive type workpiece conveyance system 2a Horizontal conveyance path 2b Curved conveyance path 2c Inclined conveyance path 2d Straight conveyance path 2e Curve conveyance path 2 Conveyance line 3 Conveyance rail 3a U-shaped rail 4 Multi-joint type carrier 5 Carrier bar 6 Friction plate 7 Support member 8 Suspension arm 9 Universal joint 10 Wheel 12 Friction drive means 13 Drive side roller 14 Driven side roller 14a Free roller 15 Friction belt 15a Lower side travel belt 15b Return upper side travel belt 15c Base cloth 15d Cover rubber 16 Pressing means 17 Airbag 18 Metal plate 19 Holding plate 20 Conveyor frame

Claims (6)

A multi-joint type carrier that can travel in a transport rail arranged in the transport line travels by a plurality of friction drive means arranged apart from the transport line, and is provided on the multi-joint type carrier. In a friction drive type workpiece transfer system that suspends and transfers a workpiece with a member,
The articulated carrier is formed by connecting a large number of carrier bars having friction plates on the front side with a universal joint,
The friction drive means presses the endless friction belt, which is wound around a driving roller and a driven roller and circulates, and the lower traveling belt of the endless friction belt against the friction plate to bring it into surface contact. A friction drive type work conveying system comprising a pressing means.   The pressing means includes an airbag and a bendable metal plate that contacts and slides on the lower running belt of the endless friction belt, and is pressed through the metal plate by the pressing force of the airbag. 2. The friction drive type work conveyance system according to claim 1, wherein a lower running belt of the endless friction belt is pressed against the friction plate.   3. The friction drive type work conveying system according to claim 1, wherein the lower running belt of the endless friction belt simultaneously contacts the friction plates of at least two of the carrier bars.   The articulated carrier includes a plurality of pairs of wheels, and the transport rail is formed of a pair of U-shaped rails. The articulated carrier is supported by the wheels in the transport rail. The friction drive type work conveyance system according to any one of claims 1 to 3, wherein the system is traveling.   5. The friction-driven workpiece conveyance system according to claim 1, wherein the conveyance line is a three-dimensional conveyance line including a horizontal conveyance path, an inclined conveyance path, a curved conveyance path, and the like.   The friction drive means arranged between the horizontal conveyance path and the inclined conveyance path is characterized in that the metal plate is curved in advance following a curved conveyance path between the horizontal conveyance path and the inclined conveyance path. The friction drive type work conveyance system according to any one of claims 2 to 5.

Images