JP4717977B2 - Work transfer device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a workpiece conveying apparatus and a conveying method for conveying a sintered body or the like used for a magnet, for example.
[0002]
[Prior art]
  The sintered body used for the magnet is cut and chamfered in the process from the sintered body in the block state until it is manufactured as a magnet, and after final cleaning, it is divided into boxes before inspection. Clogging is performed.
  Generally, in order to move between the above processes, the work is carried on a belt. As described above, in the conveyance by the belt, the chipping due to the contact between the workpieces hardly occurs on the belt. However, when a work is loaded in the box, the distance between the box and the belt is large, and the work overlaps and falls into the box.
  As a means for solving the above problems, there is a method in which a rubber material having an elastic force is laid on the dropping point in order to reduce an impact when the work drops from the belt to the box.
[0003]
[Problems to be solved by the invention]
  However, in the above-described method, the workpiece does not need to be impacted only by the workpiece falling on the rubber, and the workpiece overlapping the workpiece causes cracking and chipping as in the conventional case.
  In addition, because the loading position of the workpieces that are loaded into each container is the same, when loading a large amount of workpieces, the workpiece may be broken or chipped due to collapse from the piled state, or the weight of the workpiece loaded on the top Causes cracks and chips in the lower workpiece.
  In particular, when the work to be conveyed is a brittle material such as a sintered body, the occurrence of such cracks and chips is prominent.
  Japanese Patent Laid-Open No. 62-12532 proposes a device that detects the position of a workpiece by its own weight and controls the cassette on which the workpiece is loaded to move up and down by an elevator based on this detection signal. However, such an apparatus is not suitable for packing a large amount of workpieces.
  On the other hand, Japanese Patent Laid-Open No. 63-112320 proposes a device that keeps the distance of dropping from the transport surface of the conveyor device at a substantially constant amount by lowering the work load receiving tray. However, even such an apparatus cannot sufficiently prevent cracking or chipping of a brittle material such as a sintered body.
[0004]
  In view of the above, an object of the present invention is to reduce the collision speed during conveyance or unloading by slowing the conveyance speed when conveying a workpiece, and to prevent the occurrence of cracks or chipping of the workpiece.
  It is another object of the present invention to eliminate the occurrence of impacts and collisions between workpieces caused by dropping from the conveying means during loading in a container, and effectively preventing the occurrence of cracks and chips of the workpieces.
  In addition, the present invention prevents the work located at the bottom of the box from being cracked or chipped by the weight of the work being stacked in one place by distributing and widening the loading range of the work. With the goal.
  Another object of the present invention is to prevent cracks and chips generated in a workpiece by collapsing from a piled state by stacking as flatly as possible in a container.
  Another object of the present invention is to prevent the work from being cracked or chipped, particularly when the work to be conveyed is a brittle material such as a sintered body.
[0005]
[Means for Solving the Problems]
  According to a first aspect of the present invention, there is provided a work transfer device according to the present invention, a transfer means for forming a transfer path of a work therein, a container for loading the work transferred by the transfer means, and a container placement for mounting the container. And the conveying means is installed so as to be inclined so that the work conveyance surface on the carry-out side is lower than the work conveyance surface on the carry-in side, and the conveyance means is constituted by a cylinder, and the cylinder The inner diameter of the cylindrical body is different from the inner diameter of the cylindrical body, the inner diameter of the cylindrical body is larger than the inner diameter of the cylindrical body. A workpiece transfer device that reduces the size of the transfer unit and rotates the transfer unit about an axis in the same direction as the transfer direction, and the container mounting unit tilts the workpiece mounting surface of the container with respect to a horizontal plane.BeforeThe container is rotated.
  Claim 2The invention described isClaim 1In the workpiece transfer device according to the item 1, the container mounting means can change the inclination angle of the workpiece mounting surface in accordance with the amount of workpieces to be loaded.
  Claim 3The invention described isClaim 2In the workpiece conveyance device described in the item 1, the inclination angle of the workpiece placement surface is changed so that the angle formed with the horizontal plane becomes smaller as the number of workpieces to be loaded increases.
  Claim 4The invention as described is from claim 1Claim 3In the workpiece conveying apparatus according to any one of the above, the container placing means can change the inclination angle of the workpiece placing surface in accordance with the type of the workpiece to be conveyed.
  Claim 5The invention as described is from claim 1Claim 4In the workpiece conveyance device according to any one of the above, an inclination angle of the workpiece placement surface with respect to a horizontal plane is set to 25 degrees or less.
  Claim 6The invention described isClaim 1The workpiece transfer apparatus according to claim 1, wherein the carry-out port of the transfer means is shifted by a predetermined dimension from the rotation center of the container.
  Claim 7The invention described isClaim 6The workpiece transfer apparatus according to claim 1, wherein the rotation direction of the container below the transfer port of the transfer unit is set to a direction in which the workpiece unloaded from the transfer port is not pushed back to the transfer unit side.
  Claim 8The invention described isClaim 1In the workpiece conveyance device described in item 1, the rotation direction of the conveyance means is a direction in which the workpiece carried out from the carry-out port is guided to the outer peripheral side of the container.
  Claim 9The invention described isClaim 1In the workpiece transfer device according to the item 1, the distance between the carry-out port of the transfer means and the loading surface of the container or the workpiece in the container is narrower than the longitudinal dimension of the workpiece.
  Claim 10According to the present invention, in the workpiece transfer device according to claim 1, the peripheral speed of the inner peripheral surface of the transfer means is A, the peripheral speed of the inner peripheral surface of the transfer means is B, A <C <B where A <C <B, where C is the speed in the conveyance direction of the workpiece at the time of loading into the conveyance means.
  Claim 11The present invention described above is characterized in that, in the workpiece transfer apparatus according to claim 1, an inclination angle of the transfer means with respect to a horizontal plane is set to 7 degrees or less.
  Claim 12The present invention described above is characterized in that in the workpiece transfer apparatus according to claim 1, two or more workpieces are not simultaneously carried into the carry-in port of the transfer means.
  Claim 13The present invention described above is characterized in that, in the workpiece conveying device according to claim 1, the workpiece conveyed by the conveying means is a sintered body.
  Claim 14The workpiece conveying method according to the present invention described in claim 1Claim 13A workpiece transfer method for transferring the workpiece using the workpiece transfer device according to any one of the above, wherein the workpiece is transferred in the transfer direction while meandering on the workpiece transfer surface of the transfer means.
  Claim 15The workpiece conveying method according to the present invention described in claim 1Claim 13A workpiece conveyance method for conveying the workpiece using the workpiece conveyance device according to any one of the above, wherein the workpiece is slid in a direction different from the conveyance direction on the workpiece conveyance surface of the conveyance means. Characterized by reducing speed.
  Claim 16The invention described isClaim 14OrClaim 15In the work transport method described in item 1, the work is meandered by rotating the transport means, or the work is slid in a direction different from the transport direction.
  Claim 17The invention described isClaim 16In the work transfer method described in item 1, the peripheral speed of the inner peripheral surface of the transfer means of the transfer means is made slower than the peripheral speed of the inner peripheral surface of the transfer means of the transfer means.
  Claim 18The invention described isClaim 14OrClaim 15In the work transfer method described in the above, the meandering distance of the work or the sliding distance in a direction different from the transfer direction of the work is increased on the carry-in side rather than the carry-out side of the transfer means. .
  Claim 19The invention described isClaim 14OrClaim 15In the workpiece transfer method described in the above, the workpiece is moved in the transfer direction by inclining the transfer means so that the workpiece transfer surface on the carry-out side is lower than the workpiece transfer surface on the carry-in side. To do.
  Claim 20The workpiece conveying method according to the present invention described in claim 1Claim 13A workpiece transfer method for transferring the workpiece using the workpiece transfer device according to any one of the above, wherein the workpiece is moved to the container or the workpiece in the container before the workpiece is detached from the outlet of the transfer means. The workpiece is brought into contact with the workpiece, and the workpiece is separated from the carry-out port of the conveying means by the operation of the container.
  Claim 21The workpiece conveying method according to the present invention described in claim 1Claim 13A workpiece transport method for transporting the workpiece using the workpiece transport device according to any one of the above, wherein the workpiece is placed on the workpiece mounting surface or the workpiece mounting before the workpiece is detached from the unloading port of the transport means. The workpiece is brought into contact with the workpiece in the placement surface, and the workpiece is separated from the carry-out port of the conveying means by the operation of the container.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
  The workpiece transfer apparatus according to the first embodiment of the present invention rotates the transfer means about an axis in the same direction as the transfer direction.Rotate container withIs. According to the present embodiment, the rotation of the conveying means causes the workpiece conveyed inside the conveying means to move in a direction different from the conveying direction, thereby reducing the conveying speed. Therefore, the conveyance speed when conveying the workpiece can be slowed, the collision at the time of conveyance and unloading can be reduced, and the occurrence of cracks and chipping of the workpiece can be prevented. Further, the conveying means is formed of a cylinder, and the inner diameter of the cylinder is made different between the carry-in side and the carry-out side. Since the circumferential speed is different, the working distance in the circumferential direction of the workpiece is different. Accordingly, the speed of the workpiece in the conveyance direction can be changed between the carry-in side and the carry-out side. Since the speed in the transport direction inside the transport unit can be adjusted in this way, for example, by slowing down, it is possible to effectively prevent the occurrence of cracks or chips on the workpiece. Further, by using a conical cylindrical body, the speed of the workpiece in the conveyance direction can be changed at a constant rate from the carry-in side to the carry-out side. Since the speed in the transport direction inside the transport means can be gradually changed in this way, it is possible to eliminate the occurrence of collision between workpieces and effectively prevent the occurrence of cracks and chipping of the workpiece. Also, the workpiece can be greatly meandered on the carry-in side or the workpiece can be slid largely in a direction different from the transport direction, and the meander can be reduced on the carry-out side or slide in a direction different from the transport direction. Can be reduced. Accordingly, the speed in the transport direction can be greatly reduced on the carry-in side, and the work can be aligned in a row on the carry-out side, and the speed in the transport direction can be effectively reduced and the work can be removed from the carry-out side. Can be carried out one by one. In addition, since the work placement surface of the container is inclined with respect to the horizontal plane by the container placement means, the work carried out from the carry-out port of the transfer means is loaded along the inclined surface, so that the impact caused by dropping In addition, the range in which the work is loaded can be distributed and widened.Moreover, the place where a workpiece | work is loaded can be changed in order by rotating a container. Further, by rotating in an inclined state, it is possible to make the workpiece loading state in the container uniform.
[0007]
  Of the present inventionSecondEmbodiments ofFirstIn the workpiece transfer apparatus according to the embodiment, the container mounting means can change the inclination angle of the workpiece mounting surface in accordance with the amount of workpieces to be loaded. According to the present embodiment, by changing the inclination angle of the work placement surface according to the amount of work to be loaded, according to the height at which the work is loaded in the container, The distance from the loading surface in the container can be adjusted. Therefore, it is possible to prevent a collision due to a workpiece falling.
[0008]
  Of the present inventionThirdEmbodiments ofSecondIn the workpiece transfer apparatus according to the embodiment, the inclination angle of the workpiece placement surface of the container is changed so that the angle formed with the horizontal plane decreases as the number of workpieces loaded increases. According to the present embodiment, when there is no work in the container, it is possible to prevent the work from falling by shortening the interval between the carry-out port and the loading surface in the container by increasing the inclination angle. At the same time, when there are few workpieces, the workpiece is moved to the outer periphery side of the container by a large inclination angle. Depending on the height at which the workpiece is loaded, the distance between the carry-out port of the transfer means and the loading surface in the container can be adjusted. Therefore, it is possible to prevent a collision due to a workpiece falling.
[0009]
  Of the present invention4thThe first embodiment is from the firstThirdIn the workpiece transfer apparatus according to the embodiment, the container mounting means can change the inclination angle of the workpiece mounting surface in accordance with the type of the workpiece to be transferred. According to the present embodiment, by changing the inclination angle of the work placement surface, the distance between the carry-out port and the container can be adjusted according to the size and shape of the work, and the work in the container can be adjusted. It is possible to prevent the occurrence of cracking or chipping of the workpiece by adjusting the sliding of the workpiece.
[0010]
  Of the present invention5thThe first embodiment is from the first4thIn the workpiece conveyance device in the embodiment, the inclination angle of the workpiece placement surface of the container with respect to the horizontal plane is set to 25 degrees or less. If the tilt angle exceeds 25 degrees, the workpiece slips too much in the container, and there is a risk that the workpiece is chipped or cracked.
[0011]
  Of the present invention6thEmbodiments ofFirstIn the workpiece transfer apparatus according to the embodiment, the carry-out port of the transfer means is shifted by a predetermined dimension from the rotation center of the container. According to this embodiment, workpieces can be distributed and loaded in a container.
[0012]
  Of the present invention7thEmbodiments of6thIn the workpiece transfer apparatus according to the embodiment, the rotation direction of the container below the transfer port of the transfer unit is set to a direction in which the workpiece unloaded from the transfer port is not pushed back to the transfer unit side. According to the present embodiment, the work carried out from the carry-out port can be smoothly and uniformly placed on the loading surface.
[0013]
  Of the present invention8thEmbodiments ofFirstIn the workpiece transfer apparatus according to the embodiment, the rotation direction of the transfer means is set to the direction in which the workpiece carried out from the carry-out port is guided to the outer peripheral side of the container. According to this embodiment, since the work carried out from the carry-out port is guided to the outer peripheral side of the container by the rotation of the conveying means, the work can be dispersed, and the work is piled up at the container center. It is possible to prevent the workpieces from being cracked or chipped by this pile.
[0014]
  Of the present invention9thEmbodiments ofFirstIn the workpiece transfer apparatus according to the embodiment, the distance between the carry-out port of the transfer means and the loading surface of the container or the workpiece in the container is made smaller than the longitudinal dimension of the workpiece. According to the present embodiment, since the workpiece contacts the loading surface of the container or the workpiece in the container without leaving the carry-out port of the transfer means, the work is loaded into the container without falling from the carry-out port of the transfer means. be able to. Accordingly, it is possible to eliminate the occurrence of a collision between the workpieces when loading into the container, and to effectively prevent the occurrence of a crack or a chip of the workpiece.
[0015]
  Of the present invention10thIn the workpiece transfer apparatus according to the first embodiment, A is the peripheral speed of the inner peripheral surface of the transfer means of the transfer means A, B is the peripheral speed of the inner peripheral face of the transfer means of the transfer means, A <C <B, where C is the speed of the workpiece in the carrying direction at the time of loading. According to the present embodiment, meandering in the transport means or sliding in a direction different from the transport direction can be effectively generated, and on the carry-out side, the meander is reduced or the transport direction is set. Sliding in different directions can be reduced. Accordingly, the speed in the transport direction can be greatly reduced on the carry-in side, and the workpieces can be aligned in a row on the carry-out side, and the speed in the transport direction can be effectively reduced and reduced from the carry-out side. It becomes possible to carry it out one by one.
[0016]
  Of the present invention11thIn this embodiment, in the workpiece transfer apparatus according to the first embodiment, the inclination angle of the transfer means with respect to the horizontal plane is set to 7 degrees or less. According to the present embodiment, it is possible to effectively cause meandering in the transport means or sliding in a direction different from the transport direction. If the inclination angle exceeds 7 degrees, the distance that the workpiece meanders becomes short, and it becomes difficult to perform sufficient deceleration.
[0017]
  Of the present invention12thIn this embodiment, in the workpiece transfer apparatus according to the first embodiment, two or more workpieces are not simultaneously carried into the carry-in port of the transfer means. According to the present embodiment, it is possible to reliably and smoothly perform operations such as meandering of the workpiece in the conveyance means without interfering with each other during conveyance in the conveyance means, and on the carry-out side. They can be aligned in almost one row, and the work can be guided to the container one by one.
[0018]
  Of the present invention13thIn this embodiment, the sintered compact is used as the workpiece conveyed by the conveying means in the workpiece conveying apparatus according to the first embodiment. According to this Embodiment, it can convey, without damaging the sintered compact which is a brittle material.
[0019]
  Of the present invention14thIn the embodiment, the work conveying method is from the first.13thThe workpiece is conveyed in the conveyance direction while meandering the workpiece on the workpiece conveyance surface of the conveyance means. According to the present embodiment, the speed in the transport direction is reduced by meandering. Therefore, the conveyance speed when conveying the workpiece can be slowed, the collision at the time of conveyance can be reduced, and the occurrence of cracking or chipping of the workpiece can be prevented.
[0020]
  Of the present invention15thIn the embodiment, the work conveying method is from the first.13thUsing the workpiece transfer device, the speed of the transfer direction is reduced by sliding the workpiece in a direction different from the transfer direction on the workpiece transfer surface of the transfer means. According to the present embodiment, it is possible to reduce the conveyance speed when conveying a workpiece, to reduce the collision during conveyance, and to prevent the occurrence of cracks or chipping of the workpiece.
[0021]
  Of the present invention16thEmbodiments of14thOr15thIn the workpiece conveyance method in the embodiment, the workpiece is meandered by rotating the conveyance means, or the workpiece is slid in a direction different from the conveyance direction. According to the present embodiment, the workpiece conveyed inside the conveyance unit is meandered or moved in a direction different from the conveyance direction by the rotation of the conveyance unit. Further, by changing the rotation speed, the meandering distance or the sliding distance in a direction different from the conveying direction can be easily adjusted.
[0022]
  Of the present invention17thEmbodiments of16thIn the work transfer method according to the embodiment, the peripheral speed of the inner peripheral surface of the transfer means of the transfer means is made slower than the peripheral speed of the inner peripheral surface of the transfer means of the transfer means. According to the present embodiment, the work can be greatly meandered on the carry-in side, or the work can be greatly slid in a direction different from the carrying direction, and the meander is made small on the carry-out side or Sliding in different directions can be reduced. Therefore, the speed in the transport direction can be greatly reduced on the carry-in side, and the work can be aligned in a row on the carry-out side, the speed in the transport direction can be reduced, and the work can be moved from the carry-out side. It becomes possible to carry it out one by one.
[0023]
  Of the present invention18thEmbodiments of14thOr15thIn the work transfer method in the embodiment, the meandering distance of the work or the sliding distance in a direction different from the transfer direction of the work is made larger on the carry-in side than on the carry-out side of the carrying means. According to the present embodiment, the speed in the transport direction can be greatly reduced on the carry-in side, and the work can be aligned in a row on the carry-out side, and the speed in the transport direction can be reduced and It is possible to carry out one by one from the exit.
[0024]
  Of the present invention19thEmbodiments of14thOr15thIn the work transport method in the embodiment, the work is moved in the transport direction by inclining the transport means so that the work transport surface on the carry-out side becomes lower than the work transport surface on the carry-in side. . According to the present embodiment, the workpiece can be easily moved in the transport direction, and it is easy to adopt a configuration in which the workpiece is meandered or the workpiece is slid in a direction different from the transport direction.
[0025]
  Of the present invention20thIn the embodiment, the work conveying method is from the first.13thThis work is brought into contact with the container or the work in the container before the work is detached from the carry-out port of the carrying means, and the work is detached from the carry-out port of the carrying means by the operation of the container. Is. According to the present embodiment, since the workpiece contacts the loading surface of the container or the workpiece in the container without leaving the carry-out port of the transfer means, the work is loaded into the container without falling from the carry-out port of the transfer means. be able to. Accordingly, it is possible to eliminate the occurrence of a collision between the workpieces when loading into the container, and to effectively prevent the occurrence of a crack or a chip of the workpiece.
[0026]
  Of the present invention21stIn the embodiment, the work conveying method is from the first.13thThe workpiece is brought into contact with the workpiece placement surface or the workpiece in the workpiece placement surface before the workpiece is detached from the carry-out port of the conveyance means, and the workpiece is conveyed by the operation of the container. It is made to detach from the carry-out port. According to the present embodiment, since the workpiece contacts the loading surface of the container or the workpiece in the container without leaving the carry-out port of the transfer means, the work is loaded into the container without falling from the carry-out port of the transfer means. be able to. Accordingly, it is possible to eliminate the occurrence of collision between the workpieces when loading into the container, and to effectively prevent the occurrence of cracks or chipping of the workpiece.
[0027]
【Example】
  A workpiece transfer apparatus according to an embodiment of the present invention will be described below with reference to the drawings. 1 and FIG. 2 are perspective views of the apparatus, FIG. 3 is a configuration diagram of the apparatus, FIG. 4 is a perspective view of a main part showing a loading state of a work on a container of the apparatus, and FIG. It is a principal part perspective view which shows a carrying-out state.
[0028]
  First, the whole structure of the workpiece conveyance apparatus by a present Example is demonstrated using FIGS. 1-3.
  The workpiece transfer apparatus shown in the figure includes, in its main body 10, a transfer means 20 for transferring a work and a container mounting means 40 for mounting a container 30 for loading the work transferred by the transfer means 20. .
  The main body 10 includes a control unit 11 that controls operations of the transport unit 20 and the container mounting unit 40. Moreover, the lower part of the main body 10 is provided with a caster 12 for enabling the main body 10 to move and a leg portion 13 for supporting the main body 10 during operation.
[0029]
  The conveyance means 20 is comprised by the cone-shaped cylinder which made the internal diameter by the side of carry-out 20A smaller than the internal diameter by the side of carry-in 20B. Here, the inner diameter of the carry-out port 20A is preferably about twice the longitudinal dimension of the work to be conveyed. The material of the conveying means 20 is preferably a stainless steel material having a low coefficient of friction and good wear resistance, corrosion resistance, and workability. The conveying means 20 is installed at an angle α with respect to the horizontal plane so that the carry-in port 20B side is rotatably held by the holding member 21 and the carry-out port 20A side is lower than the carry-in port 20B side. . Here, the inclination angle α is preferably 7 degrees or less. When the inclination angle α exceeds 7 degrees, the tendency that the workpiece is conveyed by the inclination becomes strong. The inclination angle α can be changed by the inclination angle changing means 22.
  The holding member 21 includes a driving unit 23 made of a motor or the like, and a transmission mechanism 24 that transmits the driving of the driving unit 23 to the conveying unit 20.
[0030]
  The container mounting means 40 includes a container mounting surface 41 on which a container 30 for loading a work is placed on the upper part. Further, the container placing means 40 includes a rotating means 42 for rotating the container placing surface 41 and an inclination means 43 for inclining the container placing surface 41 with respect to the horizontal plane.
  The rotating means 42 is constituted by a motor and is provided below the container placement surface 41. The tilting means 43 has a rotating shaft 44 and has an arm portion 45 on which the container mounting surface 41 is disposed on one end side, and is connected to the other end side of the arm portion 45 and the main body 10 and is loaded with a work by the arm portion. The spring part 47 which changes the inclination angle of 45, and the damper 46 connected with the other end side of the arm part 45 and the main body 10, and buffering with respect to the load of a workpiece | work are provided.
  The inclination means 43 can change the inclination angle of the container placement surface 41 according to the amount of workpieces loaded on the container 30. That is, the inclination means 43 changes the inclination angle of the container mounting surface 41 so that the angle β formed with the horizontal plane becomes smaller as the work loaded on the container 30 increases. Further, the tilting means 43 can change the tilt angle of the container mounting surface 41 according to the type of work to be conveyed by changing the spring constant of the spring portion 47. In addition, it is preferable that inclination | tilt angle (beta) with respect to the horizontal surface of the container mounting surface 41 shall be 25 degrees or less.
[0031]
  As shown in FIG. 3, a conveyance path 50 for supplying a workpiece to the conveyance means 20 is provided on the carry-in port 20 </ b> B side of the conveyance means 20. It is preferable that the workpieces are supplied from the conveyance path 50 to the conveyance unit 20 one by one. The speed at the time of carrying the workpiece into the transport means 20 can be adjusted by the inclination angle of the transport path 50 or the conveyor speed of the transport path 50.
[0032]
  Next, the positional relationship between the carry-out port 20A of the conveying means 20 and the container 30 in the apparatus will be described with reference to FIG.
  As shown in the figure, the carry-out port 20 </ b> A of the transfer means 20 is arranged with a predetermined dimension shifted from the rotation center X of the container 30. At this time, the carry-out port 20 </ b> A is arranged so that the rotation direction Y of the container 30 below the carry-out port 20 </ b> A is the same as the transfer direction Z of the transfer unit 20 with respect to the rotation center X of the container 30. In addition, the rotation direction W of the transport unit 20 is a direction in which the work carried out from the carry-out port 20 </ b> A is guided to the outer peripheral side of the container 30. In the figure, reference numeral 60 denotes a workpiece.
  Further, as shown in FIG. 4 showing the loading state of the work 60 on the container 30, the distance between the carry-out port 20 </ b> A of the transport unit 20 and the loading surface 30 </ b> A of the container 30 is narrower than the longitudinal dimension of the work 60. The inclination angle changing means 22 and the inclination means 43 are adjusted. In the state where the workpiece 60 is loaded in the container 30, it is preferable to adjust by the interval between the carry-out port 20 </ b> A and the work 60 in the vessel 30, not the interval between the carry-out port 20 </ b> A and the loading surface 30 </ b> A. This interval adjustment is most ideal to detect the actual interval, but is adjusted according to the loading amount of the work 60 in the container 30. Here, it is preferable to change the elastic force of the spring portion 47 in accordance with the type of the workpiece 60.
  In this embodiment, according to the type of the work 60 to be conveyed, the inclination angle of the conveying means 20 is set in advance by the inclination angle changing means 22, and the maximum inclination angle of the container mounting surface 41 is set by the inclination means 43. In the transfer process, the inclination angle of the container placement surface 41 is changed by the inclination means 43 in accordance with the load amount of the work, whereby the distance between the carry-out port 20A and the work surface 60A in the container 30 or the work 60 in the container 30 is changed. Adjust.
[0033]
  The operation of the workpiece transfer apparatus according to this embodiment will be described below.
  First, the conveying means 20 is rotated around an axis in the longitudinal direction of the cylinder, that is, an axis in the same direction as the conveying direction. Since the conveying means 20 is composed of a conical cylinder whose inner diameter on the carry-out port 20A side is smaller than the inner diameter on the carry-in port 20B side, the peripheral speed of the inner peripheral surface on the carry-out port 20A side is the inside of the carry-in port 20B side. Make it slower than the peripheral speed. In addition, the speed of the workpiece | work 60 at the time of carrying in from the conveyance path 50 to the conveyance means 20 is made into the speed which is slower than the peripheral speed of the internal peripheral surface of the carrying-in entrance 20B side, and faster than the peripheral speed of the internal peripheral surface at the carry-out exit 20A side. As a result, the deceleration effect is high and cracks and chips are less likely to occur. That is, when the peripheral speed of the inner peripheral surface of the carry-out port 20A is A, the peripheral speed of the inner peripheral surface of the carry-in port 20B is B, and the speed in the transport direction of the workpiece 60 at the time of loading into the transport means 20 is C. A <C <B. For example, when the circumferential speed A is 100 mm / sec and the circumferential speed B is 50 mm / sec, the speed C in the conveyance direction of the workpiece 60 is about 80 mm / sec.
[0034]
  On the other hand, the container mounting means 40 rotates the container 30 in a state where the container mounting surface 41 is inclined at an angle β with respect to the horizontal plane. The angle β at the initial stage is preferably set to about 25 degrees. By setting the angle to about 25 degrees, it is possible to shorten the interval between the carry-out port 20A and the placement surface 30A at the initial stage of workpiece loading.
[0035]
  In this state, the workpiece 60 is supplied from the conveyance path 50 to the conveyance means 20. At this time, the workpieces 60 are supplied one by one from the conveyance path 50.
  The workpiece 60 supplied to the conveying means 20 is conveyed in the conveying direction while meandering on the workpiece conveying surface.
[0036]
  Here, the conveyance state of the workpiece | work 60 in the conveyance means 20 is demonstrated using FIG.
  As shown in the figure, the workpiece 60A supplied into the conveying means 20 first meanders in the rotation direction W (left side of the drawing) of the conveying means 20. The workpiece 60A meandering in the rotation direction in this manner then slides down the conveyance surface by its own weight, and moves to the position of the workpiece 60B while meandering in the counter-rotation direction (right side of the drawing) due to the inertial force caused by the downhill. At the position of the workpiece 60B, the force in the rotational direction given by the conveying means 20 becomes larger than the inertial force due to the downhill, and therefore the meandering again in the rotational direction. As described above, the workpiece 60 slides in a direction different from the conveyance direction, so that the speed in the conveyance direction is reduced. Further, since the peripheral speed of the inner peripheral surface of the carrying means 20 on the side of the carry-out port 20A is slower than the peripheral speed of the inner peripheral surface of the carry-in port 20B, the meandering distance of the workpiece 60 is closer to the carry-out port 20A than to the carry-in port 20B. Alternatively, the sliding distance in a direction different from the conveyance direction of the workpiece 60 is gradually reduced, and the workpieces 60C, 60D, and 60E are aligned in a line on the carry-out port 20A side. Further, the work 60 is transported with the longitudinal direction of the work 60 as the transport direction at least on the side of the carry-out port 60A.
  Since the work 60E in the carry-out port 20A maintains the distance between the carry-out port 20A and the loading surface 30A of the container 30 or the work 60 in the container 30 to be smaller than the longitudinal dimension of the work 60, the carry-out port 20A Before leaving, the workpiece abuts against the workpiece placement surface 30A or the workpiece 60 in the workpiece placement surface 30A. Then, the workpiece 60E is detached from the carry-out port 20A by the rotation operation of the container 30. Here, the work placement surface 30A of the container 30 is rotated while being inclined with respect to the horizontal plane, and the carry-out port 20A is shifted from the rotation center X of the container 30 by a predetermined dimension. 60 can be distributed and loaded. In addition, by setting the rotation direction of the container 30 below the carry-out port 20A of the transfer unit 20 to the same direction as the transfer direction of the transfer unit 20, the work 60 carried out from the carry-out port 20A can be smoothly and evenly placed on the loading surface 30A. It can be mounted on. Moreover, the work 60 can be dispersed by setting the rotation direction W of the conveying means 20 to a direction in which the work carried out from the carry-out port 20A is guided to the outer peripheral side of the container 30, and the work 60 can be dispersed in the center of the container 30. Therefore, it is possible to prevent the workpieces 60 from being stacked and to prevent the workpiece 60 from being broken or chipped by the stacking.
  The container mounting surface 41 by the tilting means 43 is set so that the tilt angle becomes gentle each time a work is loaded on the container 30 and becomes horizontal when the target weight is set in advance. By changing the inclination angle in this way, the workpiece can be loaded uniformly without causing cracks or chipping.
[0037]
  The apparatus as in this embodiment is particularly effective when a brittle material such as a sintered body is used as a workpiece.
  In the above-described embodiment, the conveying unit 20 for loading the workpiece 60 into the container 30 has been described. However, the conveying unit is used not only for loading the workpiece 60 into the container 30 but also between the processes. It can also be used as a general conveyance path, and by using the conveyance means according to the present invention, the speed in the conveyance direction can be changed and the workpieces can be aligned.
  Further, in the above-described embodiment, the rotation operation for rotating the conveying means in the same direction is shown, but the rotation operation for swinging in a range of a predetermined angle may be used.
[0038]
【The invention's effect】
  As is apparent from the above description, according to the present invention, by slowing the workpiece conveyance speed, it is possible to reduce collisions during conveyance and unloading, and to prevent the occurrence of cracks and chipping of the workpiece.
  Further, according to the present invention, it is possible to eliminate the occurrence of an impact caused by a drop from the conveying means during the loading in the container, a collision between the workpieces, and the like, and effectively prevent the occurrence of a crack or a chip of the workpiece.
  In addition, according to the present invention, the work can be stacked in a wide range by dispersing the work so that the work is stacked in one place, and the weight located at the bottom of the box is prevented from cracking or chipping. can do.
  Further, according to the present invention, it is possible to prevent cracks and chips generated in the workpiece by collapsing from the piled state by eliminating the loading of the workpiece in the piled state in the container.
  Further, according to the present invention, it is possible to prevent the workpiece from being cracked or chipped, particularly when the workpiece to be conveyed is a brittle material such as a sintered body.
[Brief description of the drawings]
FIG. 1 is a perspective view of a workpiece transfer device according to an embodiment of the present invention.
FIG. 2 is a perspective view of a workpiece transfer device according to an embodiment of the present invention.
FIG. 3 is a configuration diagram of a workpiece transfer device according to an embodiment of the present invention.
FIG. 4 is a perspective view of a main part showing a work loading state on a container of a work transfer device according to an embodiment of the present invention.
FIG. 5 is a perspective view of a main part showing a carry-out state at a carry-out port of a work transfer device according to an embodiment of the present invention.
[Explanation of symbols]
  20 Transport means
  20A Unloading exit
  20B carry-in entrance
  30 containers
  40 Container placement means
  41 Container placement surface
  42 Rotating means
  43 Inclination means

Claims (21)

A transport unit that forms a transport path of the workpiece therein; a container that loads the work transported by the transport unit; and a container mounting unit that mounts the container; The workpiece conveying surface on the carry-out side is inclined to be lower than the workpiece carrying surface, the conveying means is formed of a cylindrical body, and the inner diameter of the cylindrical body is set between the inlet side and the outlet side. The conveying means is a conical cylinder, the inner diameter of the cylindrical body on the outlet side is smaller than the inner diameter of the cylindrical body on the inlet side, and the conveying means is in the same direction as the conveying direction. A workpiece transfer device that rotates about the axis of the workpiece, wherein the workpiece mounting means tilts the workpiece mounting surface of the container with respect to a horizontal plane and rotates the container. apparatus. The workpiece transfer device according to claim 1 , wherein the container mounting unit is capable of changing an inclination angle of the workpiece mounting surface in accordance with an amount of a workpiece to be loaded. The workpiece conveyance device according to claim 2 , wherein an inclination angle of the workpiece placement surface is changed so that an angle formed with a horizontal plane becomes smaller as more workpieces are loaded. The workpiece transfer device according to any one of claims 1 to 3 , wherein the container mounting means is capable of changing an inclination angle of the workpiece mounting surface according to a type of a workpiece to be transferred. . The workpiece conveyance device according to any one of claims 1 to 4 , wherein an inclination angle of the workpiece placement surface with respect to a horizontal plane is set to 25 degrees or less. The workpiece transfer apparatus according to claim 1 , wherein a carry-out port of the transfer unit is shifted by a predetermined dimension from the rotation center of the container. The workpiece transfer apparatus according to claim 6 , wherein the rotation direction of the container below the transfer port of the transfer unit is set to a direction in which the workpiece unloaded from the transfer port is not pushed back to the transfer unit side. . The workpiece conveyance device according to claim 1 , wherein the rotation direction of the conveyance means is a direction in which a workpiece carried out from the carry-out port is guided to an outer peripheral side of the container. 2. The workpiece transfer apparatus according to claim 1 , wherein an interval between the carry-out port of the transfer means and the loading surface of the container or the workpiece in the container is made narrower than the longitudinal dimension of the workpiece.   The peripheral speed of the inner peripheral surface of the transfer means of the transport means is A, the peripheral speed of the inner peripheral surface of the transport inlet side of the transport means is B, and the speed of the work in the transport direction when loading into the transport means is C. The workpiece transfer apparatus according to claim 1, wherein A <C <B.   The workpiece conveying apparatus according to claim 1, wherein an inclination angle of the conveying unit with respect to a horizontal plane is set to 7 degrees or less.   2. The workpiece transfer apparatus according to claim 1, wherein two or more workpieces are not simultaneously carried into the carry-in entrance of the transfer means.   The workpiece transfer apparatus according to claim 1, wherein the workpiece transferred by the transfer means is a sintered body. A workpiece transfer method for transferring the workpiece using the workpiece transfer device according to any one of claims 1 to 13 , wherein the workpiece is transferred in a transfer direction while meandering on the workpiece transfer surface of the transfer means. A method for conveying a workpiece. A workpiece transfer method for transferring the workpiece using the workpiece transfer device according to any one of claims 1 to 13 , wherein the workpiece is slid in a direction different from the transfer direction on the workpiece transfer surface of the transfer means. A workpiece transfer method characterized by reducing the speed in the transfer direction by moving the workpiece. The work transport method according to claim 14 or 15 , wherein the work is meandered by rotating the transport means, or the work is slid in a direction different from the transport direction. The work conveying method according to claim 16 , wherein a peripheral speed of an inner peripheral surface of the transporting unit on the transporting port side is made slower than a peripheral speed of the inner peripheral surface of the transporting unit on the transporting side. In entrance side of the carry-out port side of the conveying means, serpentine length of the workpiece, or to claim 14 or claim 15, characterized in that increasing the sliding distance of the conveying direction different from the direction of the workpiece The workpiece transfer method described. Said conveying means, by inclining to the workpiece conveying surface of the outlet port side of the workpiece conveying surface of the entrance side is lower, according to claim 14 or claim 15, wherein the moving the workpiece in the conveying direction The workpiece transfer method described in 1. A workpiece transfer method for transferring the workpiece using the workpiece transfer device according to any one of claims 1 to 13 , wherein the workpiece is removed from the container before the workpiece is released from a transfer outlet of the transfer means. Alternatively, the workpiece conveying method, wherein the workpiece is brought into contact with the workpiece in the container, and the workpiece is separated from the carry-out port of the conveying means by the operation of the container. A workpiece transfer method for transferring the workpiece using the workpiece transfer device according to any one of claims 1 to 13 , wherein the workpiece is removed from the transfer port of the transfer means before the workpiece is detached. A work transporting method, wherein the work is brought into contact with a mounting surface or a work in the work mounting surface, and the work is separated from a carry-out port of the transport means by the operation of the container.

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