JP6424804B2 - Jump-up type conveyor system - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a flip-up type conveyor device capable of flipping up a main body for transporting a work.

As this type of conveyor device, for example, as shown in FIG. 12, the main portion 120 is pivoted around the rotation axis 128 by pulling the first end 121 of the main portion 120 in the conveyance direction X of the workpiece with the wire 143. It is known that switching from the horizontal state to the flip-up state is possible. In this case, the main body portion 120 can be maintained in the flipped up state by the brake provided in the winding device of the wire 143.
Further, in the flip-up type conveyor device described in Patent Document 1, the piston of the cylinder is extended by operating the actuator, and the main body can be switched from the horizontal state to the flip-up state. In this case, the extended piston can maintain the body in the flipped up state.

Patent 2897164 gazette

However, in the conventional flip-up conveyor device 3 shown in FIG. 12, the main body portion 120 maintains the flip-up state when the wire 143 is broken or the brake provided in the winding device of the wire 143 is broken. It will not be possible, and the 1st end 121 of main part 120 will fall by dead weight. Thus, if there is a person at the descending point of the first end 121 of the main body 120, the person may be injured. Moreover, when it collides with the articles | goods in the descent | fall point of the 1st end 121 of the main-body part 120, there exists a possibility that the flip-up-type conveyor apparatus 3 may be damaged. Also in the flip-up type conveyor device described in Patent Document 1, when there is a failure in the actuator or cylinder that maintains the flip-up state of the main body, the first end of the flip-up type conveyor device is lowered by its own weight, The same problems as above occur.
Therefore, the present invention aims to improve the safety of the flip-up conveyor system.

The flip-up type conveyor device according to claim 1 of the present invention is configured to be horizontal and bounce by pivoting about a rotation axis provided at a position between the first end and the second end in the conveyance direction of the work. A main body portion for transporting a work, which can be switched to a raised state, and a braking means capable of braking the turning of the main body portion, the first end of the main body portion is the main body portion The second end of the main body portion is higher than the horizontal state in the flipping state, and the second end of the main body portion is lower than the horizontal state when the main body portion is in the flipping state; When the center of gravity is positioned closer to the second end than the rotation axis, gravity tends to switch to the flip-up state by gravity acting on the main body, but the braking means can hold the main body in the horizontal state. It is characterized by
In the above-described configuration, the main body can maintain the jumping state even when a failure or the like of the braking means occurs.

In the bounce-up type conveyor device according to a second aspect of the present invention, the main body portion is provided on the first end side with respect to the rotating shaft and the conveying roller provided on the second end side with respect to the rotating shaft. And a driving source that enables rotational driving of the roller, wherein the driving source is attached to the main body at the second end side with respect to the rotation shaft.
In the above configuration, since the drive source used for conveyance and having a weight is located on the second end side of the rotation axis, the center of gravity of the main body portion is on the second end side of the rotation axis in the work conveyance direction. It can be positioned.

The flip-up type conveyor device according to claim 3 of the present invention is characterized by further comprising a lock mechanism for fixing the main body in a horizontal state.
In the flip-up type conveyor device according to claim 4 of the present invention, the lock mechanism makes the main body portion horizontal by supporting at least a part of the main body portion from the second end to the rotation shaft. It is characterized by fixing.
In the above configuration, the main body can be fixed in the horizontal state, and the conveyor device can be prevented from being flipped up.

According to a fifth aspect of the present invention, there is provided a flip-up type conveyor system comprising a braked drive source which enables rotation and braking of the rotating shaft, and the braking means is a brake of the braked drive source. It features.
In the above configuration, the drive source of the brake-equipped drive source can turn the main body to switch between the flip-up state and the horizontal state, and the brake of the brake-equipped drive source can be used as the braking means.

In the bounce-up type conveyor device according to claim 6 of the present invention, the main body portion includes a stand attached to the first end side with respect to the rotation shaft, and the stand is in a state where the main body portion is in a flip-up state. When the stand can be switched between the unfolded state and the folded state, and when the stand is in the unfolded state, it is configured to be able to support the main body in the horizontal state, the main body is in a flipping up state, and the stand When in the folded state, a control unit is provided for controlling the brake-equipped drive source so that the first end of the main unit does not descend.
In the above configuration, the stand can be folded and stored, and the first end can be prevented from lowering when the stand is folded.

The bounce-up type conveyor device according to claim 7 of the present invention further comprises a safety device which can be turned on when the main body is in the flipped-up state, and the safety device is in the on state. Sometimes, the main body is held so that the first end does not descend.
In the above configuration, the first end of the main body can be prevented from lowering by turning on the safety device when the main body is in the flipping state.

  According to the flip-up conveyor system of the present invention, it is possible to prevent the situation in which the first end of the main body is lowered to injure a person, or the collision with articles to damage the flip-up conveyor system. The safety of the flip-up conveyor system can be improved.

It is a front view of the flip-up type conveyor apparatus which concerns on Embodiment 1 of this invention. It is a top view of the same raising type conveyor apparatus. It is a front view of the lock mechanism of the same flip-up type conveyor apparatus. It is a left view of the lock mechanism of the same flip-up type conveyor apparatus. It is a figure which expands and shows a part of back surface of the locking mechanism of the flip-up type conveyor apparatus. It is an enlarged front view which shows the case where the stand of the same flip-up type conveyor apparatus is a folding state. It is an enlarged front view which shows the case where the stand of the same flip-up-type conveyor apparatus is an expansion | deployment state. It is a figure which shows the case where the stand of the same flip-up-type conveyor apparatus is an expansion | deployment state, Comprising: It is A arrow line view in FIG. 7A. It is an enlarged rear view which shows the case where the safety device of the same flip-up type conveyor apparatus is ON state. It is an enlarged plan view which shows the case where the safety device of the same flip-up type conveyor apparatus is ON state. It is an enlarged rear view which shows the case where the safety device of the bounce-up type conveyor apparatus is an off state. It is a block diagram of the control part of the bounce-up type conveyor apparatus. It is a left side view of a flip-up type conveyor device concerning a 2nd embodiment of the present invention. It is a figure which shows a part of top view of the same flip-up-type conveyor apparatus. It is a figure which shows the same flip-up type conveyor apparatus, Comprising: It is B-BB sectional drawing in FIG. 11B. It is a front view of the conventional flip-up type conveyor apparatus.

Embodiment 1
Hereinafter, the flip-up type conveyor apparatus according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. The flip-up type conveyor device 1 according to the embodiment of the present invention is provided, for example, on the downstream side in the transport direction X with the work W transferred by the forklift from the upstream side in the transport direction X Are used to transport to another conveyor system (not shown). Or, it is used for conveyance in the opposite direction. The symbol U in the alternate long and short dash line in FIGS. 1 and 2 indicates a guide for guiding the workpiece W including the pallet for forklift in the transport direction X.

  The flip-up type conveyor device 1 includes a main body 20 for transporting the work W. The main body portion 20 includes a first transport sprocket 21a as a transport roller, a second transport sprocket 22a as a transport roller, a transport endless chain 23, an upper frame 24, a lower frame 25, and a first It has a bracket 21b and a second bracket 22b. The first transfer sprocket 21 a is provided near the first end 21 in the transfer direction X of the workpiece W. The second transfer sprocket 22 a is provided near the second end 22 in the transfer direction X. The transport endless chain 23 is held between the first transport sprocket 21a and the second transport sprocket 22a with a predetermined tension. The upper frame 24 holds the endless transport chain 23 between the first transport sprocket 21a and the second transport sprocket 22a. The lower frame 25 is attached below the upper frame 24. The first bracket 21b is provided so as to protrude further to the first end 21 side than the upper frame 24, and holds the first transport sprocket 21a. The second bracket 22b is provided so as to project to the second end 22 side more than the upper frame 24, and holds the second conveying sprocket 22a. Further, two first conveying sprockets 21a, second conveying sprockets 22a, conveying endless chain 23, upper frame 24, lower frame 25, first bracket 21b and second bracket 22b are provided two by two. That is, the flip-up conveyor device 1 according to the present embodiment is a two-chain chain conveyor.

  The second transfer sprocket 22a provided in the vicinity of the second end 22 is connected to a transfer drive source 26 that enables rotational driving of the second transfer sprocket 22a, and operates the transfer drive source 26. Thus, the transport endless chain 23 can be rotated to transport the workpiece W. Further, as shown in FIG. 2, in the vicinity of the second end 22 of the main body portion 20, a connection plate 27 for connecting the two lower frames 25 is provided. The transport drive source 26 is disposed on the connection plate 27.

  Further, a rotational shaft 28 is provided at a position between the first end 21 and the second end 22 of the main body 20. The body portion 20 switches between the horizontal state and the flipped up state by pivoting around the rotation axis 28. In addition, the dashed-two dotted line part in FIG. 1 shows the case where the main-body part 20 is a flipping-up state. The first end 21 of the main body 20 is higher than the horizontal state when the main body 20 is in the flipping state, and the second end 22 of the main body 20 is in the horizontal state when the main body 20 is in the flipping state It descends more than that. Here, the rotation axis 28 is parallel to the depth direction Z perpendicular to the transport direction X and the vertical direction Y.

  Further, the flip-up type conveyor device 1 further includes a support 30. The support base 30 has a support mechanism 31, a leg 32, a first connecting portion 33, a second connecting portion 34, and a flat portion 35. Two legs 32 are arranged in the transport direction X and two legs 32 are arranged in the depth direction Z, for a total of four. Two first connection parts 33 are provided, and connect two places of the upper ends of the four leg parts 32 aligned in the depth direction Z with each other. Two second connection portions 34 are provided, and extend in the transport direction X to connect the first connection portions 33 to each other. The flat portion 35 is a member parallel to the floor surface, and is connected to all four legs 32. The second connection portion 34 extends below the rotation shaft 28 of the main body portion 20 and supports the two support mechanisms 31 from below. The support mechanism 31 supports the rotation shaft 28 of the main body 20 at two points. As a result, the main body 20 is supported so as to be pivotable about the rotation axis 28.

  Further, the flip-up type conveyor device 1 further includes a drive source 40 with a brake. The brake-equipped drive source 40 enables rotational driving and braking of the rotary shaft 28 of the main body 20. The brake-equipped drive source 40 is provided on the flat surface portion 35 of the support table 30 and has a switching sprocket 42 rotatable around the drive shaft 41 below the main body portion 20. Further, the main body portion 20 has a switching sprocket 29 attached to the rotation shaft 28 and rotatable with the rotation shaft 28. The switching sprocket 29 of the main body 20 and the switching sprocket 42 of the brake-equipped drive source 40 engage with the switching endless chain 43 held with a predetermined tension therebetween. Then, by rotating the switching sprocket 42 of the braking drive source 40 around the driving shaft 41, the switching endless chain 43 is rotated, and the switching sprocket 29 is rotated to turn the main body 20 together with the rotation shaft 28. It can be done.

  As a result, the main body unit 20 can be switched between the flip-up state and the horizontal state. Further, the brake of the brake-equipped drive source 40 brakes the rotation of the switching sprocket 42 by braking the rotation of the switching sprocket 42 and brakes the rotation of the switching sprocket 29 to brake the rotation of the switching sprocket 29. Can be braked. Here, as shown in FIG. 2, it is preferable that two or more switching endless chains 43 be used in parallel (double or triple). This is because even if one of the switching endless chains 43 is broken, the operation of the braking drive source 40 can be secured by the other switching endless chain 43.

  The symbol G shown in FIG. 1 indicates the center of gravity of the main body 20. In the flip-up type conveyor device 1 according to the embodiment of the present invention, since the transport drive source 26 is positioned closer to the second end 22 than the rotary shaft 28, the weight of the transport drive source 26 is used to make the main body The center of gravity G of 20 can be positioned closer to the second end 22 than the rotation axis 28. As a result, due to the gravity acting on the main body 20, the main body 20 tries to switch from the horizontal state to the flip-up state. On the other hand, since the brake of the brake-equipped drive source 40 brakes the turning around the rotation axis 28 of the main body portion 20, the main body portion 20 can be maintained in the horizontal state without being switched to the flipping state. This configuration can improve the safety of the flip-up conveyor device 1. Details will be described below.

  In the conventional flip-up conveyor device 3 shown in FIG. 12, when the wire 143 is broken or the brake provided in the winding device of the wire 143 is broken, the main body 120 can not maintain the flip-up state. The first end 121 of the main body 120 is lowered by its own weight. Thus, if there is a person at the descending point of the first end 121 of the main body 120, the person may be injured. In addition, if there is an article at the descending point of the first end 21 of the main body 120, the article may collide with the flip-up type conveyor device 3 and the flip-up type conveyor device 3 may be broken.

  On the other hand, according to the flip-up type conveyor device 1 according to the embodiment of the present invention, since the center of gravity G of the main body portion 20 is positioned closer to the second end 22 than the rotating shaft 28, 43 for the switching endless chain If it is broken or there is a failure in the brake of the drive unit with brake 40, the main body unit 20 tries to switch to the flip-up state. That is, even if there is a failure or the like of the brake when the main body portion 20 is in the flipping state, the flipping state is maintained as it is, and the first end 21 of the main body portion 20 is not lowered. Therefore, it is possible to prevent a situation in which a person is injured due to the first end 21 being lowered, or a situation in which the bounce-up conveyor device 1 is broken due to collision with an article, and thus a bounce-up conveyor device The safety of 1 can be improved. In addition, if the center of gravity G of the main body 20 is provided in the vicinity of the rotation axis 28, it is possible to reduce the force required to turn the main body 20 around the rotation axis 28.

  The flip-up conveyor device 1 further includes a lock mechanism 50, a safety device 60, and a control unit 70 (see FIG. 10), and the main body unit 20 further has a stand 80. Each of these configurations will be described below.

  The lock mechanism 50 is configured to be able to support at least a portion of the main body 20 from the second end 22 to the rotation shaft 28 when the main body 20 is in the horizontal state. Specifically, as shown in FIGS. 3 to 5, the lock mechanism 50 includes the support member 51, the lock mechanism drive source 52, the cam 53, the lever 54, the photoelectric sensor 55, and the first light shield plate 56. , And the second light shielding plate 57. The support member 51 has a rotating shaft 51a, and can pivot around the rotating shaft 51a. The lock mechanism drive source 52 has a drive shaft 52a. The cam 53 is connected to the drive shaft 52a of the lock mechanism drive source 52, and is a cylindrical protrusion provided at the tip of the arm 53a which can be pivoted with the drive shaft 52a. The lever 54 is connected to the rotation shaft 51 a of the support member 51, has a long hole 54 a which can be pivoted with the rotation shaft 51 a and engaged with the cam 53. As the cam 53 pivots with the drive shaft 52a of the lock mechanism drive source 52, it slides inside the long hole 54a, pivots the lever 54, and rotates the rotation shaft 51a connected to the lever 54. Thereby, the support member 51 can be pivoted around the rotation shaft 51a. The support member 51 can be switched between the vertical state and the inclined state which is inclined by about 20 ° to 30 ° from the vertical state by turning. When the support member 51 is in the vertical state, the main body 20 in the vicinity of the second end 22 can be supported from below on the upper surface of the support member 51. On the other hand, when the support member 51 is in an inclined state, interference between the main body portion 20 and the support member 51 can be prevented when the main body portion 20 turns.

  Further, as shown in FIGS. 4 and 5, a first light shielding plate 56 and a second light shielding plate 57 are attached to the end of the rotary shaft 51 a on the back surface of the support member 51. The first light shielding plate 56 and the second light shielding plate 57 turn around the rotation axis 51 a as the support member 51 turns. The photoelectric sensor 55 is provided on the back side of the support member 51, and includes a first light emitting unit 55a, a first light receiving unit 55b, a second light emitting unit 55c, and a second light receiving unit 55d. As shown in FIG. 5, when the support member 51 is in the inclined state, the first light receiving unit 55b detects the light emitted from the first light emitting unit 55a, but the light emitted from the second light emitting unit 55c Is blocked by the second light shielding plate 57, and the second light receiving unit 55d does not detect light. On the other hand, when the support member 51 is in the vertical state, the light emitted from the first light projecting unit 55a is blocked by the first light shielding plate 56, and the first light receiving unit 55b does not detect the light. The unit 55d detects the light emitted from the second light emitting unit 57. Further, as shown in FIG. 10, the photoelectric sensor 55 is connected to the control unit 70. When the second light receiving unit 55d of the photoelectric sensor 55 does not detect light, the control unit 70 recognizes that the support member 51 is in the inclined state, and the support member 51 turns in the direction to switch from the vertical state to the inclined state. The lock mechanism drive source 52 is controlled so as not to In addition, when the first light receiving unit 55b of the photoelectric sensor 55 does not detect light, the control unit 70 recognizes that the support member 51 is in the vertical state, and switches the tilt state to the vertical state. The lock mechanism drive source 52 is controlled so that it does not turn. Here, the two light receiving portions of the first light receiving portion 55b and the second light receiving portion 55d are provided in order to reliably detect whether the support member 51 is in the inclined state or in the vertical state. When it is necessary to detect whether or not the support member 51 is in the vertical state, the second light receiving unit 55d may not be provided, and only the first light receiving unit 55b may be provided.

  Since the flip-up conveyor device 1 according to the present embodiment has the lock mechanism 50, the workpiece W can be stably transported even if the weight of the workpiece W is large. For example, when there is no lock mechanism 50 and the weight of the work W is large, the work W takes the second end 22 of the main body 20 when transporting the work W with the main body 20 in a horizontal state. When passing through, the weight of the work W concentrates on the second end 22 and the force to switch to the flipped up state of the main body 20 exceeds the braking force of the brake-equipped drive source 40 and the work W is transported. There is a possibility that the main unit 20 may be flipped up. When the flip-up conveyor device 1 includes the lock mechanism 50, the lock mechanism 50 supports at least a part of the main body portion 20 from the second end 22 to the rotary shaft 28 so that the main body portion is being transported It is possible to prevent the situation in which 20 jumps up.

  Next, the configuration of the stand 80 will be described. The stand 80 is attached to the main body portion 20 closer to the first end 21 than the rotation shaft 28 in the transport direction X, as shown in FIGS. 1 and 2. When the main body unit 20 is in the flip-up state, the stand 80 can switch between the expanded state and the folded state. Here, the unfolded state means that the angle θ between the stand 80 and the main body 20 is approximately 90 degrees, and the folded state means that the angle θ between the stand 80 and the main body 20 is 20 ° to It means the case of about 30 °. When the stand 80 is in the unfolded state, the body portion 20 in the horizontal state can be supported from the lower side by the stand 80 being in contact with the floor surface.

  Specifically, as shown in FIG. 6, FIG. 7A and FIG. 7B, the stand 80 has the leg 81, the hinge 82, the bracket 83 for the stand, the index plunger 84, the first limit switch 85, And a two limit switch 86. The hinges 82 pivotally support the legs 81. The stand bracket 83 is attached to the lower frame 25 of the main body 20, and an index plunger 84 is attached. 6 and 7A, the stand bracket 83, the index plunger 84, and the lower frame 25 are indicated by a two-dot chain line. A plate-like attachment 81a is attached to the leg 81, and the attachment 81a is formed with two holes 81b and 81c that can be engaged with the index plunger 84. When the stand 80 is in the folded state, as shown in FIG. 6, the operator can fix the stand 80 in the folded state by inserting the index plunger 84 into the hole 81 b of the attachment 81 a. On the other hand, when switching the stand 80 from the folded state to the expanded state, the operator loosens the index plunger 84, removes it from the hole 81b, and brings the stand 80 into the expanded state. As shown in 7A and 7B, it inserts in another hole 81c. Thereby, the stand 80 can be fixed in the unfolded state. When the stand 80 is switched from the unfolded state to the folded state, the above-described procedure may be performed in the reverse order.

  The first limit switch 85 is pushed up by the leg 81 and turned on when the stand 80 is in the folded state. The second limit switch 86 is pushed up by the leg 81 and turned on when the stand 80 is in the unfolded state. Also, as shown in FIG. 10, the first limit switch 85 and the second limit switch 86 are connected to the control unit 70 respectively. When the first limit switch 85 is in the on state, the control unit 70 recognizes that the stand 80 is in the folded state, so that the first end 21 of the main body unit 20 does not fall, that is, the drive source with brake 40. Control not to drive the On the other hand, when the second limit switch 86 is in the on state, the control unit 70 recognizes that the stand 80 is in the unfolded state, and permits the drive of the braked drive source 40. Thus, the stand 80 supporting the main body portion 20 can be folded and stored, and the first end 21 of the main body portion 20 can be reliably prevented from being lowered when the stand 80 is in the folded state, thereby causing bounce The safety of the conveyor device 1 can be further improved. Here, the two limit switches of the first limit switch 85 and the second limit switch 86 are provided in order to reliably detect whether the stand 80 is in the folded state or in the unfolded state. If it is necessary to detect whether the stand 80 is in the unfolded state, the first limit switch 85 may not be provided, and only the second limit switch 86 may be provided.

  Next, the configuration of the safety device 60 will be described. As shown in FIGS. 8A, 8B and 9, the safety device 60 can switch between the on state and the off state when the main body unit 20 is in the flipped up state. When the safety device 60 is in the on state, the first end 21 (see FIG. 1) of the main body 20 is configured not to descend. Specifically, the safety device 60 includes an attachment 61 attached to the second connecting portion 34 of the support 30, a hook-like member 62, a projection 63 attached to the lower frame 25 of the main body 20, and a hook It has a handle lever 64 that moves integrally with the member 62, a stopper 65, a proximity sensor 66 that detects the position of the hook-like member 62, and a rotation shaft 67. The hook-like member 62 is attached to the attachment 61 so as to be pivotable about the rotation axis 67. The stopper 65 is attached to the attachment 61 and hits the hook-like member 62 to limit its turning. The projection 63 is constituted by the head of a bolt. Moreover, the rotating shaft 67 is comprised by the volt | bolt.

  8A and 8B show the case where the main body unit 20 is in the flipping up state and the safety device 60 is in the on state. In this case, since the hook-like member 62 engages with the projection 63 attached to the main body 20, the main body 20 is physically fixed so that the main body 20 does not pivot around the rotation shaft 28. can do. At this time, the proximity sensor 66 detects the presence of the hook-like member 62 (the safety device 60 is in the on state). The proximity sensor 66 is connected to the control unit 70 as shown in FIG. 10, and the control unit 70 recognizes that the safety device 60 is in the on state, so that the drive source with brake 40 is not driven. Control. This reliably prevents the first end 21 (see FIG. 1) of the main body 20 from being lowered by turning on the safety device 60 when the main body 20 is in the flipping state, and the flip-up type conveyor device The safety of 1 can be further improved.

  When it is desired to switch the body portion 20 from the flipped up state to the horizontal state, the operator grasps the handle lever 64 of the safety device 60 and turns the hook-like member 62 around the rotation axis 67. At this time, the hook-like member 62 is separated from the protrusion 63 and supported by the stopper 65. As a result, the safety device 60 is turned off. FIG. 9 shows the case where the main body 20 is in the flipping up state and the safety device 60 is in the off state. In this case, since the hook-like member 62 and the projection 63 attached to the main body 20 do not engage with each other, the main body 20 is not physically fixed by the hook-like member 62. Further, the proximity sensor 66 does not detect the presence of the hook-like member 62, and the control unit 70 recognizes that the safety device 60 is in the off state, and permits the driving of the braked drive source 40.

  The control unit 70, as shown in FIG. 10, based on the first limit switch 85, the second limit switch 86, the proximity sensor 66, the photoelectric sensor 55, and the input from the remote control 71, the braked drive source 40. And, it outputs to the lock mechanism drive source 52. When the first limit switch 85 is in the off state, the second limit switch 86 is in the on state, and the proximity sensor 66 does not detect the presence of the safety hook 62, the operator can operate the remote controller 71. By pressing the lowering button 71a, the brake-equipped drive source 40 can be driven to switch the main body unit 20 from the flip-up state to the horizontal state. In addition, when the operator presses the up button 71b of the remote control 71, the main body unit 20 can be switched from the horizontal state to the flip up state. Further, as described above, the control unit 70 detects that light is detected by either the first light receiving unit 55 b or the second light receiving unit 55 d of the photoelectric sensor 55, whereby the support member 51 of the lock mechanism 50 is in an inclined state. It can be determined whether it is in the vertical state or not, and the lock mechanism drive source 52 can be controlled by the operation of the remote control 71.

  According to the flip-up type conveyor device 1 according to the embodiment of the present invention, since the center of gravity G of the main body portion 20 is positioned closer to the second end 22 than the rotary shaft 28, the switching endless chain 43 breaks or the brake If there is a failure in the brake of the drive source 40, the main unit 20 tries to switch to the flipping state. Therefore, it is possible to prevent a situation in which a person is injured due to the first end 21 being lowered, or a situation in which the bounce-up conveyor device 1 is broken due to collision with an article, and thus a bounce-up conveyor device The safety of 1 can be improved.

  Here, since the transport drive source 26 used for transporting the work W is located closer to the second end 22 than the rotary shaft 28, the weight of the transport drive source 26 is used to make the center of gravity of the main body 20 G can be positioned closer to the second end 22 than the rotation shaft 28. On the other hand, since the brake of the brake-equipped drive source 40 brakes the turning around the rotation axis 28 of the main body portion 20, the main body portion 20 can be maintained in the horizontal state without being switched to the flipping state.

  In addition, since the lock mechanism 50 can support the main body 20 near the second end 22 when the main body 20 is in the horizontal state, the work W can be stably performed even when the weight of the work W is large. Can be transported.

  Furthermore, when the safety device 60 is in the on state, or when the stand 80 of the main body 20 is in the folded state, the first end 21 of the main body 20 is not lowered, that is, the main body 20 is around the rotation axis 28 Since the first end 21 of the main body 20 is prevented from falling, the safety of the flip-up conveyor device 1 can be further improved.

Second Embodiment
Next, the flip-up type conveyor device 2 according to the second embodiment will be described. In the flip-up type conveyor device 1 according to the first embodiment, as shown in FIGS. 1 and 2, the center of gravity G of the main body 20 is the rotation axis in the conveyance direction X of the workpiece W by utilizing the weight of the conveyance drive source 26. It was supposed to be located on the second end 22 side than 28. On the other hand, in the flip-up type conveyor device 2 according to the second embodiment, as shown in FIGS. 11A, 11B and 11C, not only the transport drive source 26 but also the weights 90, 91, 92 and 93 have rotating shafts 28. It is supposed to be positioned closer to the second end 22 side. The other configuration is the same as that of the flip-up type conveyor device 1 according to the first embodiment, so the detailed description will be omitted.

  In the flip-up conveyor device 2, a plurality of weights 90, 91, 92, 93 are used. Specifically, the weight 90 is disposed in a space on the front side in the depth direction Z relative to the transport drive source 26 on the connection plate 27 that connects the lower frames 25 of the main body 20, and is fixed by bolting ing. The weight 91 is disposed in a space below the drive shaft 26 a of the transport drive source 26 and fixed by bolting. Further, the weight 92 is provided in the lower frame 25 so that the lower frame 25 is hollow. Furthermore, the weight 93 is fixed by bolting from below the connection plate 27. By providing these weights 90, 91, 92, and 93 on the second end 22 side of the rotary shaft 28 of the main body 20, the center of gravity G of the main body 20 is positioned on the second end 22 side of the rotary shaft 28. It is possible to In particular, when it is insufficient to position the center of gravity G of the main body 20 closer to the second end 22 than the rotation shaft 28 with only the weight of the transport drive source 26, the flip-up type according to the second embodiment. The conveyor device 2 is useful.

  In the first and second embodiments, the first conveying sprocket 21a provided near the first end 21 of the main body 20 and the second conveying sprocket 22a provided near the second end 22 of the main body 20; Although a so-called chain conveyor having a transport endless chain 23 maintained at a predetermined tension between the first transport sprocket 21a and the second transport sprocket 22a has been described, the present invention is not limited to this, and other rollers and endless A pivoting body may be used. For example, a so-called belt conveyor may be used, in which a conveyor pulley is used as a roller instead of a conveyor sprocket, and an conveyor endless belt is used as an endless rotating body instead of an conveyor endless chain. In addition, it may be a roller conveyor in which the transport rollers are continuously arranged along the transport direction X. In addition, although it has been described that the work W is transferred by a forklift, the present invention is not limited to this, and any work may be used as long as it can be transported.

  In addition, although it has been described that the switching endless chain 43 is used between the switching sprocket 42 of the brake-equipped drive source 40 and the switching sprocket 29 of the main body 20, the present invention is not limited thereto. For example, as the switching gear of the main body portion 20 is rotated by rotationally driving the switching gear of the brake-equipped drive source 40 using the switching gears meshing with each other instead of the switching sprockets 29 and 42 It is also good. Furthermore, the switching sprockets 29 and 42 are not provided, and the drive shaft of the brake-equipped drive source 40 is provided on the rotary shaft of the main body unit 20, and the brake-equipped drive source 40 directly It may be rotated.

  Furthermore, if it is not restricted to the brake of the drive source 40 with a brake, if the damping | braking means which enables damping | braking of turning of the main-body part 20 is employ | adopted, it is possible to maintain the main-body part 20 in a horizontal state. For example, by providing a gripping mechanism capable of gripping the rotation shaft 28 of the main body portion 20 and the gripping mechanism gripping the rotation shaft 28, the turning of the main body portion 20 can be braked. Furthermore, although it has been described that the control unit 70 controls the brake-equipped drive source 40 to rotate the main body unit 20 around the rotation axis 28, the invention is not limited thereto. For example, the main body unit 20 may be turned manually. Is also possible.

  Moreover, although the lock mechanism 50 has the lock mechanism drive source 52 and the aspect which makes the support member 51 pivot about the rotating shaft 51a by the lock mechanism drive source 52 was described, it is not restricted to this. For example, the support member 51 may be turned manually, and in this case, the lock mechanism 50 may not have the lock mechanism drive source 52. When the support member 51 is turned manually, the photoelectric sensor 55, the first light shielding plate 56, and the second light shielding plate 57 may be unnecessary. Note that by pivoting the support member 51 around the rotation shaft 51a, the vertical state supporting the vicinity of the second end 22 of the main body 20 from below and interference with the main body 20 when the main body 20 pivots Although the case where it can switch with an inclination state was described, it is not restricted to this. For example, when the main body unit 20 turns, the support member 51 is retracted so that the support member 51 does not interfere with the main body unit 20, and after the main body unit 20 becomes horizontal, the support member 51 is placed on the floor surface. , And the vicinity of the second end 22 of the main body 20 on the upper surface of the support member 51 may be supported from below. Further, although the locking mechanism 50 has described the aspect of fixing the main body 20 in the horizontal state by supporting at least a part of the main body 20 from the second end 22 to the rotary shaft 28, the present invention is not limited thereto. . For example, the lock mechanism includes a hole recessed in the depth direction Z provided in the main body 20, an actuator such as an AC solenoid fixed to the support 30 or the like, and a pin movable in the depth direction Z by the actuator. May be When the main body portion 20 is in the horizontal state, the main body portion 20 can be fixed in the horizontal state by inserting the pin into the hole of the main body portion 20 by the actuator. The hole provided in the main body portion 20 is provided on either the first end 21 side or the second end 22 side of the rotary shaft 28 of the main body portion 20. Furthermore, when the weight of the work W is small, when the work W passes the second end 22 of the main body 20, the force with which the main body 20 tries to switch to the flipping up state is the drive source with brake 40 If the braking force of the brake is not exceeded, the lock mechanism 50 may not be provided because the main body unit 20 does not jump up during conveyance of the work W.

  Further, the safety device 60 physically fixes the main body 20 by engaging the hook-like member 62 with the projection 63 attached to the main body 20, and the proximity sensor 66 is of the hook-like member 62. Although the aspect which detects presence and the control part 70 controls the drive source 40 with a brake was described, it is not restricted to this. For example, the main body 20 may be fixed only by the engagement of the hook-like member 62 with the projection 63 of the main body 20 without the proximity sensor 66.

1, 2 flip-up type conveyor device 20 body portion 21 first end 22 second end 23 endless chain for transport 24 upper frame 25 lower frame 26 drive source for transport 27 connecting plate 28 rotating shaft 29 switching sprocket 30 support base 40 brake Drive source 41 Drive shaft 42 Switching sprocket 43 Switching endless chain 50 Locking mechanism 51 Support member 60 Safety device 62 Hook-like member 63 Projection 66 Proximity sensor 80 Stands 90, 91, 92, 93 Weight G Center of gravity W Work

Claims (7)

A main body for conveying a work which can be switched between a horizontal state and a flipping state by pivoting about a rotation axis provided at a position between a first end and a second end in the conveyance direction of the work. Department,
And braking means capable of braking the turning of the main body portion,
The first end of the main body portion is higher than the horizontal state when the main body portion is in the flipping up state, and the second end of the main body portion is when the main body portion is in the flipping up state Lower than the horizontal position,
The main body portion tries to switch to the flip-up state by the gravity acting on the main body portion by the center of gravity being positioned on the second end side with respect to the rotation axis, but the braking means operates the main body portion A flip-up type conveyor device characterized in that it can be held horizontally. The body portion is
Conveying rollers provided respectively on the first end side with respect to the rotation axis and on the second end side with respect to the rotation axis;
And d) a drive source enabling rotational driving of the roller,
The bounce-up type conveyor device according to claim 1, wherein the drive source is attached to the main body at the second end side with respect to the rotation shaft. The flip-up conveyor device according to claim 1 or 2, further comprising a lock mechanism that fixes the main body portion in a horizontal state. The flip-up type according to claim 3, wherein the lock mechanism fixes the main body in a horizontal state by supporting at least a part of the main body from the second end to the rotary shaft. Conveyor equipment. It has a braked drive source that enables rotation and braking of the rotary shaft,
The bounce-up type conveyor device according to any one of claims 1 to 4, wherein the braking means is a brake of the drive unit with a brake. The body portion includes a stand attached to the first end side with respect to the rotation axis,
The stand is configured to be capable of switching between the unfolded state and the folded state when the main body is in the flipping state, and capable of supporting the main body in the horizontal state when the stand is in the unfolded state;
A control unit is provided to control the brake-equipped drive source so that the first end of the main body does not lower when the main body is in a flip-up state and the stand is in a folded state. 6. The flip-up type conveyor device according to claim 5, wherein The safety device further includes a safety device that can be turned on when the main body unit is in the flipping up state,
The flip-up according to any one of claims 1 to 6, wherein the safety device is configured to hold the main body and prevent the first end from falling when in the on state. Conveyor system.