JP2016016929A - Transfer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer device which can surely perform a changeover operation of the advance and stop of a transferred object at necessary timing.SOLUTION: A transfer device 10 comprises: a first stopper 70 which is movably arranged between a first opposing position P1 which opposes a transferred object from the front of an advance direction, and a first retreat position which is deviated from the first opposing position P1; a first support member 72 which is movably arranged between a first support position R1 for supporting the first stopper 70 in the first opposing position P1, and a first support release position which is deviated from the first support position R1; and a first support member retreat mechanism 74 which imparts a force for making the stopper progress toward the first support release position to the first support member 72 against a force for making the stopper progress toward the first support position R1. When a lift part 16 is ascended and arranged in a carry-in position H1, the first support member 72 is pressed to a first pressing part 110, and moved to the first support release position.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a transport device for transporting an object to be transported in a vertical direction.

  Patent Document 1 discloses an elevating device for conveying an object to be conveyed in the vertical direction. The lifting device includes a lifting platform configured to be vertically movable, a conveyor for transporting an object to be transported from the horizontal direction toward the lifting table, a transport motor, and a rotational force of the transport motor. And a conveying V-belt for transmission to the vehicle. The conveyor has a plurality of conveyance rollers, and the conveyance V-belt is wound around the plurality of conveyance rollers.

JP 2013-124157 A

  The transport device described in Patent Document 1 requires a transport motor and a control device for controlling the transport motor. Therefore, maintenance and management of these devices are troublesome, and there is a problem in durability. In order to solve this problem, it is conceivable to employ a mechanical mechanism that does not use electricity. However, in the mechanical mechanism, since it is necessary for the operator to manually switch the progress and stop of the conveyed object, it is difficult to reliably perform this switching operation at a necessary timing.

  The present invention has been made to cope with the above-described problem, and an object of the present invention is to provide a transport apparatus that can reliably perform the operation of switching the progress and stop of a transported object at a necessary timing.

  In order to achieve the above object, the transport device according to the present invention has a mounting portion on which a transported object is mounted, and can move up and down between a loading position and a loading position below the loading position. An elevating part provided in the elevating part, a conveying path for conveying the object to be conveyed in the horizontal direction toward the elevating part arranged at the carry-in position, and the object to be conveyed conveyed by the conveying path A first stopper movably provided between a first facing position for facing from the front in the traveling direction and a first retracted position deviating from the first facing position, and the first stopper as the first stopper. It is provided to be movable between a first support position for supporting at an opposing position and a first support release position deviating from the first support position, and a force is applied to move toward the first support position. A configured first support member and the first support member A first support member retracting mechanism for applying a force directed toward the first support release position against a force directed toward the first support position, wherein the first support member retracting mechanism includes the lift unit The first support member is pressed by the first pressing portion when the elevating portion is raised and disposed at the carry-in position, and the first support release is performed. Is to be moved to a position.

  In this configuration, when the elevating unit is raised and disposed at the carry-in position, the first support member is pressed by the first pressing unit and moved to the first support release position. When the elevating part descends from the carry-in position, the first pressing part moves away from the first support member, and is moved to the first support position by a force that causes the first support member to move toward the first support position. As described above, since the first support member can be automatically operated at a necessary timing, the operation of the first stopper for switching the advance and stop of the conveyed object can be reliably performed at the necessary timing.

  Another feature of the present invention is provided so as to be movable between a second support position for supporting the first stopper at the first opposing position and a second support release position deviating from the second support position. A second support member and an operation portion operated by human force, and the second support member is interposed between the second support position and the second support release position by a force input from the operation portion. And a second support member moving mechanism for moving at the same time.

  In this configuration, the first stopper can be moved to the first retracted position only when the operating unit is operated in a state where the elevating unit is disposed at the carry-in position. Therefore, the operation for enabling the transported object to proceed to the lifting unit can be performed more carefully.

  Another feature of the present invention is that the second support member moving mechanism has a biasing member for applying a force to the second support member toward the second support position, and the operation portion is When operated, the second support member is moved to the second support release position against a force that directs the second support member to the second support position.

  In this configuration, since the second support member can be moved to the second support position by the urging force of the urging member, the second support member is moved to the second support release position and then returned to the second support position. Can save time and effort. In addition, the second support member can be reliably returned to the second support position.

  Another feature of the present invention is that a second facing position for facing the object to be transported transported by the transport path from the front in the traveling direction and a second retracted position deviating from the second facing position are provided. A second stopper configured to be movable between the second stopper position and a force to be applied to the second retreat position, and a force to be applied to the second counter position with respect to the second stopper. And a second stopper driving mechanism for applying the force against the force directed toward the retreat position, and the second facing position is a standby where the object to be conveyed whose movement is blocked by the first stopper is disposed. The second stopper driving mechanism has a second pressing portion provided on the transported object, and the transported object is set to face the transported object behind the region. When proceeding to the waiting area, Serial second stopper is pressed by the second pressing portion is to be moved to the second opposed position.

  In this configuration, when the preceding transported object advances to the standby area, the subsequent transported object can be blocked by the second stopper, so that the subsequent transported object is prevented from colliding with the preceding transported object. it can.

  Another feature of the present invention is provided to be movable between a third support position for supporting the second stopper at the second opposing position and a third support release position deviating from the third support position. A third support member, and a third support member moving mechanism for moving the third support member between the third support position and the third support release position, the third support member moving mechanism Has a transmission unit for transmitting the force input from the operation unit to the third support member, and the operation unit is configured to move the second support member to the second support release position. When operated, the third support member is moved to the third support position by a force transmitted through the transmission unit.

  In this configuration, when the second support member is moved to the second support release position in a state where the first support member is disposed at the first support release position, the first stopper can be moved to the first retraction position, Progress of the conveyed object is allowed. At this time, since the third support member is moved to the third support position, the second stopper can be supported at the second facing position even if the second pressing portion is separated from the second stopper as the conveyed object advances. . Accordingly, it is possible to prevent the subsequent transported object from proceeding and to prevent the subsequent transported object from colliding with the preceding transported object.

  Another feature of the present invention is that a third facing position for facing the object to be transported placed on the placing portion from the front in the unloading direction and a third retracted position deviating from the third facing position And a third stopper to which a force for moving toward the third facing position is applied, and a force for moving the third stopper toward the third retracted position with respect to the third facing position. A third stopper retracting mechanism for imparting against a force directed to the second object, wherein the third stopper is a weight of the object to be conveyed when the object to be conveyed is carried into the placing portion. The third stopper retracting mechanism is configured to move to the third retracted position and return to the third facing position after completion of loading, and the third stopper retracting mechanism is located below the lifting unit disposed at the unloading position. A third pressing portion provided; When it is disposed in the unloading position and lowered, in that the third stopper is moved to the third retracted position by being pressed by the third pressing portion.

  In this configuration, when the elevating unit is positioned above the carry-out position, the third stopper is disposed at the third facing position, so that the transported object can be prevented from falling off from the placement unit. When the elevating part is lowered and arranged at the unloading position, the third stopper is pressed by the third pressing part and moved to the third retracted position, so that the object to be conveyed can be unloaded without any special operation. It becomes possible.

It is a front view which shows the structure of the conveying apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows the structure of the front left part of the to-be-conveyed object conveyed on an upper conveyance path. It is the side view seen from the front which shows the structure of the conveying apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows the structure of the principal part of the conveying apparatus which concerns on one Embodiment of this invention. It is a perspective view showing the state where the 1st stopper is arranged in the 1st counter position, and the 2nd stopper is arranged in the 2nd retreat position. It is a top view showing the state where the 1st stopper was arranged in the 1st retreat position, and the 2nd stopper was arranged in the 2nd counter position. It is a perspective view which shows the structure of a 2nd stopper. It is a top view showing the state where the 1st stopper is arranged in the 1st counter position, and the 2nd stopper is arranged in the 2nd counter position.

  Hereinafter, an embodiment of a transfer device according to the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing a configuration of a transport apparatus 10 according to an embodiment of the present invention. As shown in FIG. 1, the transport device 10 includes an upper transport path 14 for laterally transporting the transported object 12 in the horizontal direction and a transported object 12 provided from the upper transport path 14 in a production line of an automobile. And a lower conveying path 18 for horizontally conveying the object 12 carried out of the elevating unit 16 in the horizontal direction. In the following description, the front in the transport direction of the article 12 in the upper transport path 14 is “front”, and the rear in the transport direction is “rear”. Further, facing the front, the right side is “right” and the left side is “left”.

  As shown in FIG. 1, the upper conveyance path 14 and the lower conveyance path 18 are arranged in two upper and lower stages. The upper conveyance path 14 includes a frame body 14a and a conveyance roller base 14b disposed inside the frame body 14a. The transported object 12 placed on the transport roller base 14b is pushed by the operator and transported to the lift unit 16 when the lift unit 16 is disposed at the carry-in position H1. The lower conveyance path 18 includes a frame body 18a and a conveyance roller base 18b disposed inside the frame body 18a. The article to be conveyed 12 placed on the conveyance roller table 18b is pushed by the operator and conveyed to the lower conveyance path 18 when the elevating unit 16 is disposed at the unloading position H2. The transport roller bases 14b and 18b may be inclined so as to become lower toward the front in the transport direction. In this case, the object to be conveyed 12 moves by gravity on the conveyance roller bases 14b and 18b.

  FIG. 2 is a perspective view showing the configuration of the front left portion of the article 12 to be conveyed that is conveyed on the upper conveyance path 14. The transported object 12 of the present embodiment is a container in which semi-finished products of automobile parts and the like are accommodated. As shown in FIG. 2, a housing 12a and legs provided at four corners on the lower surface of the housing 12a. 12b, and a protruding pressing portion 12c (second pressing portion) provided so as to protrude from each leg portion 12b to the outside in the left-right direction. Each leg 12b is configured to be able to be placed on the upper surface of the transport roller base 14b. Each pressing portion 12c (second pressing portion) is configured to protrude outward from the conveyance roller base 14b in the left-right direction. In addition, the press part 12c (2nd press part) should just be provided in the one side of the right and left in the front part of the housing 12a at least. Moreover, the press part 12c (2nd press part) may be provided directly with respect to the housing 12a.

  As shown in FIG. 1, the elevating unit 16 includes a mounting unit 20 on which the object to be transported 12 is mounted, a transport table 22 that supports the mounting unit 20, and a receiving member 24.

  As shown in FIG. 1, the placement unit 20 includes a frame body 20a and a transport roller table 20b, and the leg 12b (FIG. 2) of the object to be transported 12 is placed by the transport roller table 20b. A mounting surface S is configured. A front wall portion 28 is provided at the front end portion of the mounting portion 20. The object to be conveyed 12 applied from the upper conveyance path 14 to the placement unit 20 is prevented from moving forward by contacting the front wall 28.

  As shown in FIG. 1, the transport table 22 includes a front support portion 30 and a rear support portion 32 that are arranged at intervals in the front-rear direction, and a portion behind the center portion in the front-rear direction of the placement portion 20. And a rotation support portion 34 that supports the rotation in the vertical direction. The front support part 30 and the rear support part 32 are formed in an L shape (FIG. 2) in a side view, and their lower ends are connected to each other via a lower connection part 36a. The parts are connected via the upper connection part 36b. The front support portion 30 and the rear support portion 32 are provided with a pair of upper and lower first guide rollers 38a and a pair of upper and lower second guide rollers 38b. The first guide roller 38a and the second guide roller 38b are disposed so as to be in contact with the support frame 40 from directions orthogonal to each other.

  As shown in FIG. 1, the receiving member 24 is configured to receive the rear end portion of the placement portion 20 from below when the elevating portion 16 is positioned above the carry-out position H2. The height of the receiving member 24 is adjusted so that the mounting surface S becomes lower toward the front. Therefore, when the transported object 12 is transported vertically downward, a force directed forward by gravity acts on the transported object 12, and the transported object 12 is pressed against the front wall portion 28.

  As shown in FIG. 1, the elevating unit 16 is configured to be movable up and down along the support frame 40 between the carry-in position H <b> 1 and the carry-out position H <b> 2. The support frame 40 includes a first support column 40a and a second support column 40b that are spaced apart in the front-rear direction, and a leg portion 42 that supports them. A first contact portion 44a and a second contact portion 44b with which the first guide roller 38a and the second guide roller 38b provided on the elevating portion 16 are in contact are formed on the first support column 40a and the second support column 40b. Has been. Further, the support frame 40 includes a lowering lock mechanism 43 for preventing the elevating unit 16 disposed at the carry-in position H1 from descending, and a lift lock for preventing the elevating unit 16 disposed at the unloading position H2 from ascending. A mechanism 45 is provided.

  FIG. 3 is a right side view illustrating the configuration of the transport apparatus 10. As shown in FIG. 3, the transport device 10 further includes a weight 46, a connecting member 48, a damper device 50, and a lever portion 52.

  As shown in FIG. 3, the weight 46 has a plurality of blocks 46a made of iron or the like, and the support frame 40 is provided with a guide portion 54 that guides the plurality of blocks 46a in the vertical direction. . The total weight W0 of the weight 46 is determined so as to be larger than the weight W1 of the elevating unit 16 in order to raise the elevating unit 16 (W0> W1), and the object to be conveyed 12 is vertically lowered. In order to carry, the weight W2 of the article 12 to be conveyed is determined to be smaller than the weight W1 + W2 added to the weight W1 of the elevating unit 16 (W0 <W1 + W2).

  As shown in FIG. 3, the connecting member 48 connects the weight 46 and the lifting / lowering unit 16, thereby causing gravity acting on the weight 46 to act upward on the lifting / lowering unit 16. In this embodiment, the connecting member 48 is formed by a linear member such as a chain, and the weight 46 and the elevating part 16 are connected by the two connecting members 48. Further, guide members 56a and 56b such as sprockets are provided on the upper portion of the support frame 40, and a connecting member 48 is hung on these guide members 56a and 56b.

  As shown in FIG. 1, the damper device 50 includes a cylinder 60, a piston 62, and a liquid container 64 that are arranged extending in the vertical direction. The upper end portion of the piston 62 is connected to the upper coupling portion 36 b of the elevating unit 16. When the elevating part 16 moves up and down, the piston 62 moves up and down in conjunction with the elevating operation, and the liquid inside the cylinder 60 is pushed by the piston 62 and moves toward the liquid container 64. Therefore, when the piston 62 moves in the vertical direction, the moving speed of the piston 62 is reduced by the resistance force of the liquid, and the raising / lowering speed of the elevating unit 16 is reduced.

  As shown in FIG. 3, the lever portion 52 includes a lever 52a that is operated by human power, and a pair of left and right action portions 52b that are moved upward when the lever 52a is pushed down. As shown in FIG. 1, when the lever 52a is pushed down in a state where the elevating part 16 is disposed at the carry-out position H2, the action part 52b (FIG. 3) is moved upward and the front end part of the mounting part 20 is lifted. . As a result, the object 12 placed on the placement unit 20 can be easily conveyed toward the lower conveyance path 18.

  FIG. 4 is a perspective view illustrating a configuration of a main part of the transport device 10. As shown in FIG. 4, the transport device 10 includes a pair of left and right first stoppers 70 for preventing the transported object 12 (FIG. 1) transported by the upper transport path 14 and a pair of left and right first stoppers. 70, a first support member 72, a first support member retracting mechanism 74, a second support member 76, and a second support member moving mechanism 78 provided in association with each of 70.

  FIG. 5 is a perspective view showing a state in which the first stopper 70 is disposed at the first facing position P1 and the second stopper 80 is disposed at the second retracted position Q2. FIG. 6 is a perspective view illustrating a state in which the first stopper 70 is disposed at the first retracted position Q1 and the second stopper 80 is disposed at the second facing position P2. As shown in FIG. 5, the conveying device 10 further includes a pair of left and right second stoppers 80 for preventing the conveyed object 12 (FIG. 1) from moving behind the pair of left and right first stoppers 70, A second stopper driving mechanism 82 (FIGS. 5 and 2), a third support member 84, and a third support member moving mechanism 86 provided in association with each of the pair of second stoppers 80 are provided. The pair of left and right parts are configured symmetrically, and the same reference numerals are given to the symmetrical parts in the drawings. Hereinafter, the configuration of the pair of left and right parts will be described mainly focusing on the left part.

  As shown in FIG. 5, the first stopper 70 has a rod-shaped first stopper body 88. The first stopper body 88 is provided with a rotation shaft 92 extending in the vertical direction, and the lower end portion of the rotation shaft 92 is attached to a pedestal 94 provided on the frame body 14a shown in FIG. One end 88a of the first stopper body 88 is disposed inside the upper conveyance path 14 relative to the other end 88b. In the first stopper body 88, the inner portion 96 positioned on the one end 88 a side with respect to the rotation shaft 92 is formed longer than the outer portion 98 positioned on the other end 88 b side with respect to the rotation shaft 92. The length of the inner portion 96 in the left-right direction changes as the first stopper 70 rotates. When the length in the left-right direction of the inner portion 96 is the longest, the first stopper 70 is opposed to the object to be conveyed 12 (FIG. 1) conveyed by the upper conveyance path 14 from the front in the traveling direction. Located at P1. As shown in FIG. 6, when the length of the inner part 96 in the left-right direction is the shortest, the first stopper 70 is disposed at the first retraction position Q1 that is out of the first facing position P1. That is, the first stopper 70 is provided so as to be movable between the first facing position P1 and the first retracted position Q1.

  As shown in FIG. 5, the first support member 72 has a rod-shaped first support member main body 100, and the first support member main body 100 includes a frame body 14 a and a conveyance roller base 14 b shown in FIG. 4. It is arranged in a space T1 provided therebetween. The first support member main body 100 is provided with a rotation shaft 104 extending in the left-right direction, and one end of the rotation shaft 104 is attached to the frame body 14a. In the first support member main body 100, the front part 106 positioned forward of the rotation shaft 104 is formed longer than the rear part 108 positioned rearward of the rotation shaft 104. As a result, the front portion 106 is heavier than the rear portion 108, and in the normal state, the rear portion 108 is lifted by lowering the front portion 106.

  The frame 14a shown in FIG. 4 is provided with a stopper (not shown) for preventing the front part 106 from being lowered. When the front part 106 is prevented from lowering due to gravity by the stopper (not shown), The first support member 72 is disposed at the first support position R1 for supporting the first stopper 70 at the first facing position P1. In the present embodiment, the position facing the inner portion 96 of the first stopper 70 from the front is the first support position R1. When the front portion 106 is lifted against gravity, the first support member 72 is disposed at a first support release position U1 (FIG. 6) that is out of the first support position R1. That is, the first support member 72 is provided so as to be movable between the first support position R1 and the first support release position U1 (FIG. 6). In a normal state, the first support member 72 is directed toward the first support position R1. Is provided. In the present embodiment, gravity is used as a force for moving the first support member 72 toward the first support position R1, but a restoring force of an elastic member such as a spring and rubber may be used instead. .

  As shown in FIG. 4, the first support member retracting mechanism 74 is configured to force the first support member 72 toward the first support release position U1 (FIG. 6) toward the first support position (this embodiment). In the embodiment, it is given against gravity), and has a pressing part 110 (first pressing part) provided in the elevating part 16 and a rotating shaft 104 of the first support member 72. The pressing part 110 (first pressing part) has a pair of left and right protruding parts 112 provided so as to protrude rearward from the rear part of the elevating part 16 and a bolt 114. Each projecting portion 112 is formed with a screw hole 112a, and a bolt 114 is screwed into the screw hole 112a from above.

  As shown in FIG. 4, when the elevating part 16 is raised and disposed at the loading position H <b> 1, the head 114 a of the bolt 114 is brought into contact with the front part 106 of the first support member 72 from below, and the front part 106 is Lifted. Then, as shown in FIG. 6, the first support member 72 is rotated about the rotation shaft 104 and moved to the first support release position U1 (FIG. 6) that is out of the first support position R1 (FIG. 5). Moved. That is, a force that causes the first support member 72 to move toward the first support release position U1 (FIG. 6) is applied from the pressing portion 110 (first pressing portion).

  As shown in FIG. 5, the second support member 76 has a rod-shaped second support member main body 116, and a rotating shaft 118 extending in the vertical direction is provided at one end of the second support member main body 116. Is provided. The rotation shaft 118 is rotatably attached to a pedestal 94 provided on the frame body 14a shown in FIG. A link 120 is provided at a portion of the rotating shaft 118 that extends downward from the base 94.

  As shown in FIG. 5, when the second support member main body 116 extends forward from the rotation shaft 118, the second support member 76 supports the first stopper 70 at the first opposing position P <b> 1. 2 is disposed at the support position R2. In the present embodiment, the position facing the outer portion 98 of the first stopper 70 from the rear is the second support position R2. On the other hand, as shown in FIG. 6, when the second support member main body 116 is rotated from the second support position R2 (FIG. 5) to the inside of the upper conveyance path 14, the second support member 76 is moved to the second support position. It arrange | positions in the 2nd support cancellation | release position U2 which remove | deviated from R2 (FIG. 5). That is, the second support member 76 is provided so as to be movable between the second support position R2 (FIG. 5) and the second support release position U2. A second support member moving mechanism 78 shown in FIG. 4 is a mechanism for moving the second support member 76 between the second support position R2 and the second support release position U2 (FIG. 6).

  As shown in FIG. 5, the second support member moving mechanism 78 includes a link 120 provided on the rotation shaft 118 of the left and right second support members 76, a connecting rod 122 that connects these links 120, and a right side. The link 124 provided on the rotation shaft 118 of the second support member 76 and the operation unit 126 operated by human power are included. The operation unit 126 includes an operation rod 126a rotatably attached to an attachment portion (not shown) provided on the support frame 40 (FIG. 1), a connecting rod 126b that connects the operation rod 126a and the link 124, And an input portion 126c provided at the lower end of the operation rod 126a.

  When the operator pushes the input portion 126c shown in FIG. 5 forward, the force is transmitted to the second support member 76 on the right side through the connecting rod 126b and the link 124, and the right link 120 and the connecting rod 122 are further transmitted. And transmitted to the left second support member 76 via the left link 120. Accordingly, the left and right second support members 76 are simultaneously rotated in the direction of the arrow, and moved from the second support position R2 to the second support release position U2 (FIG. 6). As shown in FIG. 5, the second support member moving mechanism 78 further includes a biasing member 128 for applying a force to the second support member 76 toward the second support position R2. The urging member 128 of the present embodiment is an elastic member such as a spring and rubber, and one end of the urging member 128 is connected to the link 120 of the second support member 76 on the left side. The other end is connected to a frame 14a shown in FIG.

  When the operation unit 126 is operated by pushing the input unit 126c forward, the rotation shaft 118 is rotated in the arrow direction against the urging force of the urging member 128, and the second support member 76 is second. It is moved to the support release position U2 (FIG. 6). Therefore, when the force pushing the input portion 126c forward is released, the urging force of the urging member 128 causes the rotation shaft 118 to rotate in the direction opposite to the arrow direction, so that the second support member 76 is in the second support position. Returned to R2.

  FIG. 7 is a perspective view showing the configuration of the second stopper 80. As shown in FIG. 7, the second stopper 80 includes a rod-shaped second stopper body 130 having an inverted L-shaped cross section. The second stopper main body 130 has a plate-like first portion 132 constituting the side surface and a plate-like second portion 134 constituting the upper surface. A rotation shaft 138 extending in the left-right direction is provided at the longitudinal center of the first portion 132. The second stopper 80 is disposed in a space T1 provided between the frame body 14a and the transport roller base 14b shown in FIG. 4, and one end portion of the rotation shaft 138 is attached to the frame body 14a. Yes.

  A plate-like hooking portion 140 is provided at the front portion of the first portion 132, and a notch 142 is formed at the front portion of the hooking portion 140 so as to open forward. The notch 142 has an upper side 142a that extends parallel to the upper surface of the second portion 134, and an inclined side 142b that is inclined downward from the rear end of the upper side 142a toward the front.

  On the other hand, a weight portion 144 is formed at the rear portion of the first portion 132, and the rear portion 146 located rearward of the rotation shaft 138 in the second stopper 80 is more than the rotation shaft 138. It is heavier than the front portion 148 located in front. Accordingly, in the normal state, the rear portion 146 of the second stopper 80 is lowered and the front portion 148 is lifted. In the normal state, the front end 80a of the second stopper 80 is disposed above the pressing portion 12c (second pressing portion) shown in FIG. 2, and the rear end 80b of the second stopper 80 is pressed as shown in FIG. It arrange | positions below the part 12c (2nd press part). The frame body 14a shown in FIG. 4 is provided with a stopper (not shown) for preventing the rear portion 146 from descending.

  A pressing surface 150 that is pressed by a pressing portion 12c (second pressing portion) on the front side of the article to be conveyed 12 shown in FIG. A concave portion 152 for avoiding interference with the pressing portion 12 c (FIG. 8) on the rear side of the transported object 12 is formed in a portion of the second portion 134 behind the pressing surface 150.

  FIG. 8 is a plan view showing a state in which the first stopper 70 is disposed at the first facing position P1 and the second stopper 80 is disposed at the second facing position P2. A symbol M in FIG. 8 indicates a “standby region” in which the transported object 12 whose progress is blocked by the first stopper 70 is disposed. As shown in FIG. 8, when the object to be conveyed 12 is arranged in the standby area M, the pressing portion 12c on the front side of the object to be conveyed 12 is arranged at a position overlapping the pressing surface 150 in plan view. The rear pressing portion 12c is disposed inside the recess 152 in plan view. When the conveyed object 12 advances to the standby area M, the front portion 148 of the second stopper 80 is pushed down by the front pressing portion 12c of the conveyed object 12, and the second stopper 80 is centered on the rotation shaft 138 (FIG. 7). And the rear portion 146 is lifted. When the rear portion 146 is lifted, the rear end 80b of the second stopper 80 is disposed so as to face the subsequent conveyed object 12 from the front in the traveling direction behind the standby area M. That is, when the conveyed object 12 is arranged in the standby area M, the second stopper 80 is opposed to the subsequent conveyed object 12 from the front in the traveling direction behind the standby area M from the front. It arrange | positions in the position P2.

  When the rear portion 146 of the second stopper 80 is lowered in the state where the transported object 12 does not exist in the standby area M, the second stopper 80 moves away from the second facing position P2 and the second retracted position Q2 (FIG. 7). Placed in. That is, the second stopper 80 is provided so as to be movable between the second facing position P2 and the second retracted position Q2, and in a normal state, the second stopper 80 is given a force toward the second retracted position Q2. It is configured. In the present embodiment, gravity is used as the force that moves the second stopper 80 toward the second retracted position Q2, but instead, the restoring force of an elastic member such as a spring and rubber may be used.

  The second stopper driving mechanism 82 shown in FIG. 5 is used to apply a force that directs the second stopper 80 toward the second facing position P2 (FIG. 6) against a force that directs the second stopper position P2 (FIG. 6). Mechanism. As shown in FIG. 8, in this embodiment, when the front pressing portion 12c (second pressing portion) of the transported object 12 pushes down the front portion 148 of the second stopper 80, the second stopper 80 is rotated. It is rotated around 138 (FIG. 7) and moved to the second facing position P2 (FIG. 6). That is, the front pressing portion 12 c (FIG. 2) and the rotating shaft 138 (FIG. 7) are components of the second stopper driving mechanism 82.

  As shown in FIG. 5, the third support member 84 has a rod-like member 154 provided perpendicular to the rotation shaft 118 of the second support member 76. When the second support member 76 is disposed at the second support position R <b> 2, the rod-shaped member 154 is disposed at a position away from the notch 142 of the second stopper 80.

  As shown in FIG. 6, when the rotation shaft 118 is rotated and the second support member 76 moves toward the second support release position U2, the rod-shaped member 154 comes into contact with the inclined side 142b of the notch 142, After the front portion 148 of the second stopper 80 is pulled down, it comes into contact with the upper side 142 a of the notch 142. The position of the third support member 84 when the rod-shaped member 154 comes into contact with the upper side 142a is the third support position R3 for supporting the second stopper 80 at the second facing position P2. When the rotation shaft 118 is rotated in the reverse direction, the rod-shaped member 154 is moved to the third support release position U3 (FIG. 5) that is removed from the notch 142. As described above, the third support member 84 is provided so as to be movable between the third support position R3 and the third support release position U3 (FIG. 5) deviated from the third support position R3.

  The third support member moving mechanism 86 shown in FIG. 5 is a mechanism for moving the third support member 84 between the third support position R3 (FIG. 6) and the third support release position U3. The third support member moving mechanism 86 includes a transmission unit 156 for transmitting the force input from the operation unit 126 to the third support member 84. As described above, since the third support member 84 is moved by rotating the rotation shaft 118 of the second support member 76, the second support member moving mechanism for rotating the rotation shaft 118. 78 functions as a part of the transmission unit 156. As illustrated in FIG. 6, when the operation unit 126 is operated so as to move the second support member 76 to the second support release position U <b> 2, the force input from the operation unit 126 is transmitted via the transmission unit 156 to the third level. The power is transmitted to the support member 84, and the third support member 84 is moved to the third support position R3 by this force.

  As shown in FIG. 4, the transport device 10 further includes left and right for preventing the transported object 12 (FIG. 1) placed on the placement unit 20 of the elevating unit 16 from dropping from the placement unit 20. A pair of third stoppers 158 and a third stopper retracting mechanism 160 provided in association with each of the pair of left and right third stoppers 158 are provided.

  As shown in FIG. 4, the third stopper 158 has a rod-shaped third stopper body 164. The third stopper main body 164 is provided with a rotation shaft 168 extending in the left-right direction. The third stopper main body 164 is disposed in a space T2 provided between the frame body 20a and the transport roller base 20b, and one end of the rotation shaft 168 is attached to the frame body 20a. In the third stopper main body 164, the rear portion 170 positioned rearward of the rotation shaft 168 is formed longer than the front portion 172 positioned forward of the rotation shaft 168. Thus, the rear portion 170 is heavier than the front portion 172, and in the normal state, the front portion 172 is lifted by lowering the rear portion 170.

  The frame body 20a is provided with a stopper (not shown) for preventing the rear portion 170 from being lowered. When the rear portion 170 descends due to gravity and comes into contact with a stopper (not shown), the third stopper 158 is rearward (unloaded) with respect to the object 12 (FIG. 1) placed on the placement portion 20. It arrange | positions in the 3rd opposing position P3 for facing from the front of a direction. On the other hand, when the front portion 172 is pushed down or when the rear portion 170 is lifted, the third stopper 158 is disposed at a third retraction position Q3 (not shown) deviated from the third facing position P3. . In other words, the third stopper 158 is provided so as to be movable between the third facing position P3 and the third retracted position Q3, and in a normal state, a force to be directed toward the third facing position P3 is applied. It is configured. In the present embodiment, gravity acting on the rear portion 170 is used as a force for moving the third stopper 158 toward the third facing position P3. Instead, a restoring force of an elastic member such as a spring and rubber is used. May be used. When the transported object 12 (FIG. 1) is carried into the placement unit 20, the third stopper 158 is moved to the third retreat position Q3 (not shown) by the weight of the transported object 12. When the carry-in object 12 (FIG. 1) is completely carried in, the third stopper 158 is returned to the third facing position P3 by gravity acting on the rear portion 170.

  As shown in FIG. 4, the third stopper retracting mechanism 160 applies a force that causes the third stopper 158 to move toward the third retracted position Q3 (not shown) deviated from the third facing position P3 to the third facing position P3. It is given against the force to be directed. The third stopper retracting mechanism 160 is configured to rotate the pressing portion 174 (third pressing portion) provided below the elevating portion 16 disposed at the carry-out position H2 (FIG. 1) and the third stopper 158. And a rotation shaft 168. The pressing portion 174 (third pressing portion) includes a column 176 and a bolt 178 that extend in the vertical direction with respect to the floor surface on which the support frame 40 (FIG. 1) is installed. A female screw 176a is provided at the upper end of the column 176, and a bolt 178 is screwed into the female screw 176a from above. When the elevating part 16 is lowered and disposed at the carry-out position H2, the third stopper 158 is pushed by the head 178a of the bolt 178 and moved to the third retraction position Q3 (not shown).

  Below, operation | movement of the conveying apparatus 10 is demonstrated. As shown in FIG. 4, in a state where the first support member 72 is disposed at the first support position R1 and the second support member 76 is disposed at the second support position R2, the first stopper 70 is It is supported by both the first support member 72 and the second support member 76 at the one opposing position P1. At this time, if the transported object 12 does not exist in the standby area M (FIG. 8), the second stopper 80 is disposed at the second retracted position Q2. When the conveyed object 12 advances to the standby area M shown in FIG. 8, the pressing portion 12 c on the front side of the conveyed object 12 comes into contact with the pressing surface 150, and pushes down the front portion 148 as the conveyed object 12 advances. Then, as shown by a two-dot chain line in FIG. 7, the second stopper 80 is rotated around the rotation shaft 138 and moved from the second retracted position Q2 to the second facing position P2.

  As shown in FIG. 8, the conveyed object 12 that has advanced to the standby area M is prevented from advancing by being brought into contact with the first stopper 70. In this state, the subsequent conveyed object 12 is prevented from advancing by contacting the second stopper 80.

  When the elevating part 16 shown in FIG. 4 moves up and reaches the carry-in position H1, the pressing part 110 (first pressing part) of the first support member retracting mechanism 74 lifts the front part 106 of the first stopper 70. . Then, the first support member 72 is rotated around the rotation shaft 104 and moved from the first support position R1 to the first support release position U1 (FIG. 6). In this state, since the second support member 76 is disposed at the second support position R2, the first stopper 70 is not moved to the first retraction position Q1.

  As shown in FIG. 5, when the operator pushes the input unit 126c of the operation unit 126 forward, the second support member 76 is rotated about the rotation shaft 118, and the second support position R2 is moved to the second position. It is moved to the support release position U2 (FIG. 6). Accordingly, the first stopper 70 loses the support of both the first support member 72 and the second support member 76 and can move to the first retracted position Q1. In this state, the object to be conveyed 12 in the standby region M (FIG. 8) is moved by the lifting force or the force of the operator or the gravity acting on the object to be conveyed 12 (when the conveyance roller base 14 b is inclined). It moves toward the mounting part 20 (FIG. 4).

  When the conveyed object 12 in the standby area M shown in FIG. 8 is moved to the placement unit 20 (FIG. 4), the pressing part 12 c (second pressing part) of the conveyed object 12 is separated from the pressing surface 150. However, as shown in FIG. 6, in the state where the second support member 76 is disposed at the second support release position U <b> 2, the rod-shaped member 154 of the third support member 84 is hooked on the notch 142. The front portion 148 is not lifted, and the second stopper 80 can be supported at the second facing position P2.

  In the state shown in FIG. 6, when the force pushing the input portion 126c forward is released, the turning shaft 118 is turned by the urging force (restoring force) of the urging member 128, and as shown in FIG. The second support member 76 is returned to the second support position R2, and the third support member 84 is moved to the third support release position U3 that is out of the third support position R3 (FIG. 6). Further, the first stopper 70 is moved to the first facing position P1, and the second stopper 80 is moved to the second retracted position Q2. As a result, the subsequent transported object 12 can proceed to the standby area M.

  According to the present embodiment, the following effects can be achieved by the above configuration. That is, as shown in FIG. 4, when the elevating unit 16 reaches the carry-in position H1, the first support member 72 is moved to the first support release position by the pressing unit 110 (first pressing unit) provided in the elevating unit 16. Since it can be moved to U1 (FIG. 6), the operation of the first stopper 70 for switching the advance and stop of the transported object 12 can be reliably performed at a necessary timing.

  As shown in FIG. 1, the raising / lowering speed of the elevating part 16 can be reduced by the damper device 50, so that the impact when the pressing part 110 (first pressing part) shown in FIG. 4 contacts the first support member 72 can be suppressed. .

  As shown in FIG. 6, the first stopper 70 can be moved to the first retraction position Q1 only when the operation unit 126 is operated in a state where the elevating unit 16 shown in FIG. 4 is arranged at the carry-in position H1. Therefore, the operation for enabling the transported object 12 to proceed can be performed more carefully.

  As shown in FIG. 5, the second support member 76 is moved from the second support release position U2 (FIG. 6) to the second support position R2 by the force applied from the biasing member 128 to the second support member 76. 2 It can be automatically moved to the support position R2. Therefore, it is possible to reduce the trouble of returning the second support member 76 to the second support position R2 after moving the second support member 76 to the second support release position U2 (FIG. 6). In addition, the second support member 76 can be reliably returned to the second support position R2.

  As shown in FIG. 8, when the preceding transported object 12 has advanced to the standby area M, the subsequent transported object 12 can be blocked by the second stopper 80, so that the succeeding transported object 12 is preceded by the preceding transported object 12. It is possible to prevent collision with the conveyed product 12.

  As shown in FIG. 6, when the second support member 76 is moved to the second support release position U2 with the first support member 72 disposed at the first support release position U1, the first stopper 70 is moved to the first support release position U2. It becomes possible to move to the retreat position Q1, and the object 12 is allowed to advance. At this time, since the third support member 84 is moved to the third support position R3, the pressing portion 12c (second pressing portion) moves away from the second stopper 80 as the conveyed object 12 (FIG. 8) advances. In addition, the second stopper 80 can be supported at the second facing position P2. Therefore, the progress of the subsequent transported object 12 can be blocked by the second stopper 80, and the subsequent transported object 12 can be prevented from colliding with the preceding transported object 12.

  As shown in FIG. 4, when the elevating unit 16 is positioned above the carry-out position H2 (FIG. 1), the third stopper 158 is disposed at the third facing position P3. Can be prevented from falling off from the mounting portion 20. When the elevating part 16 is lowered and disposed at the carry-out position H2 (FIG. 1), the third retraction position where the third stopper 158 is pressed by the pressing part 174 (third pressing part) and deviates from the third facing position P3. Since it moves to Q3 (illustration omitted), it becomes possible to carry out the article 12 to be conveyed from the placing section 20 without performing any special operation.

  In carrying out the present invention, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the object of the present invention.

H1 ... carry-in position, H2 ... carry-out position, P1 ... first opposing position, Q1 ... first retraction position,
R1 ... first support position, U1 ... first support release position, 10 ... conveying device, 12 ... conveyed object,
14 ... conveying path, 16 ... elevating part, 20 ... placing part, 70 ... first stopper,
72 ... 1st support member, 74 ... 1st support member evacuation mechanism, 110 ... 1st press part

Claims (6)

An elevating unit that has a placement unit on which an object to be conveyed is placed, and is provided so as to be able to move up and down between a carry-in position and a carry-out position below the carry-in position;
A conveyance path for conveying the object to be conveyed in a horizontal direction toward the elevating unit arranged at the carry-in position;
Provided to be movable between a first facing position for facing the object to be transported transported by the transport path from the front in the advancing direction and a first retracted position deviating from the first facing position. A first stopper;
The first stopper is movably provided between a first support position for supporting the first stopper at the first facing position and a first support release position deviating from the first support position, and is directed to the first support position. A first support member configured to be applied with a force to be applied;
A first support member retracting mechanism for providing the first support member with a force directed toward the first support release position against a force directed toward the first support position;
The first support member retracting mechanism has a first pressing part provided in the lifting part,
The transport device, wherein the first support member is pressed by the first pressing portion and moved to the first support release position when the elevating unit is raised and disposed at the carry-in position. A second support member movably provided between a second support position for supporting the first stopper at the first facing position and a second support release position deviating from the second support position;
A second operation unit configured to move the second support member between the second support position and the second support release position by a force input from the operation unit; The transport apparatus according to claim 1, further comprising a support member moving mechanism. The second support member moving mechanism includes an urging member for applying a force to the second support member toward the second support position,
The transport apparatus according to claim 2, wherein when the operation unit is operated, the second support member is moved to the second support release position against a force that directs the second support member to the second support position. It is provided movably between a second facing position for facing the object to be transported transported by the transport path from the front in the advancing direction and a second retracted position deviating from the second facing position, A second stopper configured to be applied with a force directed toward the second retracted position;
A second stopper driving mechanism for applying a force for directing the second stopper to the second opposing position against a force for directing the second stopper position;
The second facing position is determined so as to face the transported object behind a standby area in which the transported object whose progress has been blocked by the first stopper is disposed,
The second stopper driving mechanism has a second pressing portion provided on the conveyed object,
The transport apparatus according to claim 2 or 3, wherein when the object to be transported advances to the standby area, the second stopper is pressed by the second pressing portion and moved to the second facing position. A third support member movably provided between a third support position for supporting the second stopper at the second opposing position and a third support release position deviating from the third support position;
A third support member moving mechanism for moving the third support member between the third support position and the third support release position;
The third support member moving mechanism includes a transmission unit for transmitting the force input from the operation unit to the third support member,
When the operation unit is operated to move the second support member to the second support release position, the third support member moves to the third support position by the force transmitted through the transmission unit. The transfer device according to claim 4. Provided movably between a third facing position for facing the object to be transported placed on the placing section from the front in the unloading direction and a third retracted position deviating from the third facing position. A third stopper to which a force directed toward the third facing position is applied;
A third stopper retracting mechanism for applying a force to the third stopper against the force to be directed to the third opposing position with respect to the third stopper position;
The third stopper is moved to the third retracted position by the weight of the transported object when the transported object is carried into the placement unit, and returns to the third facing position after completion of the carry-in. Is configured as
The third stopper retracting mechanism has a third pressing part provided below the lifting part arranged at the carry-out position,
6. The device according to claim 1, wherein when the elevating part is lowered and disposed at the carry-out position, the third stopper is pressed by the third pressing part and moved to the third retracted position. The conveying apparatus as described in.

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