JP5650391B2 - Conveyor device and transfer device - Google Patents

Description

  The present invention relates to a conveyor device and a conveying device for conveying a workpiece. Specifically, the present invention relates to a conveyor device and a transport device that can safely and smoothly perform intermittent transport of a plurality of workpieces that use the influence of gravity.

  Conventionally, in a conveying device such as a machining line, a conveyor device is provided, and a plurality of workpieces are intermittently conveyed. Here, in a conveyor apparatus, it is proposed to convey a workpiece | work using the influence of gravity (patent document 1). In addition, when a workpiece stays on the conveyor device, it is necessary to stop another workpiece that is continuously conveyed to prevent a collision between the workpieces. To cope with this, a stopper device for preventing the collision of the workpiece. Has been proposed (Patent Document 2).

Japanese Utility Model Publication No. 6-10215 JP-A-9-2650

  However, the conveyor apparatus described in Patent Document 1 does not consider any acceleration due to gravity of the workpiece being conveyed. Further, even if the invention described in Patent Document 2 is applied to a conveyor device that transports a workpiece using the influence of gravity, the workpiece continues to be accelerated by gravity and collides with the stopper device at a high speed. There is a risk of damage.

  Therefore, in the conventional conveyor apparatus including Patent Document 1 and Patent Document 2, it is difficult to safely and smoothly carry out intermittent conveyance of a plurality of works using the influence of gravity.

  An object of this invention is to provide the conveyor apparatus and conveying apparatus which can perform the intermittent conveyance of the some workpiece | work using the influence of gravity safely and smoothly.

  The conveyor device (for example, the conveyor device 23 in the embodiment) of the present invention is a conveyor device that conveys a workpiece (for example, the workpiece 61 in the embodiment), and is inclined at a predetermined angle with respect to the horizontal direction. The connecting member (for example, the connecting member 42 in the embodiment) and the rotation shaft are arranged on the connecting member so as to be parallel to each other perpendicular to the length direction of the connecting member, and the workpiece is arranged. A plurality of conveyor rolls to be placed (for example, the conveyor roll 41 in the embodiment) and a locking member that locks the workpiece that has been conveyed to the lower end in the length direction of the connecting member (for example, the engagement in the embodiment) A stop member 43) and a plurality of stop mechanisms (for example, the stop mechanism 44 in the embodiment) disposed on the connecting member and stopping the workpiece being conveyed. The stop mechanism includes an engagement roll (for example, the engagement roll 55 in the embodiment) that engages with the workpiece, a stopper roll (for example, the stopper roll 56 in the embodiment) that locks the workpiece, and the engagement. A link mechanism (for example, a link mechanism including a support shaft 51, a stopper roll support arm 52, and an engagement roll support arm 53 in the embodiment) that connects the roll and the stopper roll so as to be movable in the reverse direction. The engagement roll that is not engaged with the workpiece is disposed above the conveyor roll, and the stopper roll connected to the engagement roll by the link mechanism is disposed below the conveyor roll. The engagement roll engaged with the workpiece moves downward by the pressing force of the workpiece, and the engagement roll The stopper roll connected by the link mechanism, the move above the conveyor rolls, characterized in that engaged the workpiece which is conveyed subsequent to engaged the workpiece.

  According to the present invention, the connecting member disposed to be inclined at a predetermined angle with respect to the horizontal direction, and the rotating shafts of the connecting member are parallel to each other and perpendicular to the length direction of the connecting member. The workpieces are arranged side by side in a flat shape and the conveyor roll on which the workpieces are placed can convey the workpieces using the influence of gravity. Therefore, compared with the case of using the conventional conveyor apparatus carrying the drive roll driven by external apparatuses, such as a motor, the investment of the whole installations, such as a machining line, can be suppressed. Moreover, since energy discharge, such as electric power and air, can be suppressed, it is easy to construct an energy saving line. Furthermore, since it is possible to manufacture a conveyor device with a simple structure that does not require a motor, photoelectric tube, etc., the durability against cutting oil and the splashing of the face, which is unique to machining lines, is improved, and a line with few failures is created. Easy to build.

Further, according to the present invention, the engagement roll that is not engaged with the workpiece is arranged above the conveyor roll, and the stopper roll connected to the engagement roll by the link mechanism is arranged below the conveyor roll. I did it. When the conveyed first work is engaged with the engagement roll, the engagement roll moves downward by the pressing force of the first work against the engagement roll, and is connected to the engagement roll. The stopper roll connected by the member was moved above the conveyor roll.
Thereby, the stopper roll can latch the 2nd workpiece | work which can be conveyed after a 1st workpiece | work. That is, the stopper roll has a work collision preventing function.
Further, the engaging roll moves downward due to the weight of the first work that is staying, so that the connected stopper roll moves upward, and the work collision preventing function is activated. Thus, the engagement roll has a function of a switch for operating the work collision prevention function.
Furthermore, the work is conveyed while being engaged with the engagement rolls of the plurality of link mechanisms. Therefore, the engagement roll has a brake function for the moving workpiece. As a result, the speed at which the work reaches the locking member or the stopper roll is reduced, so that it is possible to prevent the work from being damaged when colliding with the locking member or the stopper roll.
By realizing such various functions, it is possible to safely and smoothly perform intermittent conveyance of a plurality of workpieces using the influence of gravity.

  In this case, the stop mechanism further includes an elastic body that urges the link mechanism, and the engagement roll that has been disengaged from the work is moved upward by the urging force of the elastic body against the link mechanism. The stopper roll connected to the engaging roll and the link mechanism may be moved below the conveyor roll.

  The conveying device of the present invention (for example, a machining line in the embodiment) is a conveying device including one or more lines for conveying a workpiece, and all or a part of the one or more lines is the above-described conveyor of the present invention. It is characterized by comprising an apparatus.

  According to this invention, the whole or a part of one or more lines is configured by the above-described conveyor device of the present invention, so that the workpiece can be conveyed using the influence of gravity. Therefore, it is possible to achieve the same effect as the above-described conveyor device of the present invention.

  Moreover, according to this invention, the above-mentioned conveyor apparatus was equipped with the stopper roll and engagement roll which have the following functions. That is, the stopper roll has a workpiece collision prevention function. The engagement roll has a function of a switch for activating a work collision prevention function and a function of a brake for the moving work. By realizing such various functions, it is possible to safely and smoothly perform intermittent conveyance of a plurality of workpieces using the influence of gravity.

  In this case, the one or more lines are machining lines, and each section (for example, sections 15-1 to 15-5 in the embodiment) including one or more machine tools (for example, the processing machine 21 in the embodiment). The main line (for example, the main line 11 in the embodiment) that sequentially conveys the work, the side line (for example, the side line 12 in the embodiment) for paying out the work from the main line, And a loader (for example, the loader line 13 in the embodiment) for feeding the workpiece into the main line, and the transfer device further includes a loader (for example, the loader 22 in the embodiment) capable of transferring the workpiece. The whole or a part of the one or more lines except the conveyor device is transported by the loader. It may be configured as in.

  In this case, the workpiece may be an engine cylinder block and a head.

According to the present invention, it is possible to transport a workpiece using the influence of gravity. Therefore, compared with the case of using the conventional conveyor apparatus carrying the drive roll driven by external apparatuses, such as a motor, the investment of the whole installations, such as a machining line, can be suppressed. Moreover, since energy discharge, such as electric power and air, can be suppressed, it is easy to construct an energy saving line. In addition, since it is possible to manufacture a conveyor device with a simple structure that does not require a motor, phototube, etc., the durability against cutting oil and the splashing of the face that is unique to the machining line is improved, and a line with few failures is built. Can be easily done.
Further, according to the present invention, it is possible to safely and smoothly carry out intermittent conveyance of a plurality of workpieces using the influence of gravity.

It is a mimetic diagram showing a schematic structure of a machining line concerning one embodiment of the present invention. It is a side view showing a schematic structure of a conveyor device concerning one embodiment of the present invention. It is a top view which shows schematic structure of the stop mechanism of the conveyor apparatus which concerns on one Embodiment of this invention. It is a side view which shows schematic structure of the stop mechanism of the conveyor apparatus which concerns on one Embodiment of this invention, Comprising: It is a figure which shows typically a mode that a workpiece | work is conveyed. It is a side view which shows schematic structure of the stop mechanism of the conveyor apparatus which concerns on one Embodiment of this invention, Comprising: It is a figure which shows typically a mode that a workpiece | work is conveyed. It is a top view which shows schematic structure of a part of main line containing the turning apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows schematic structure of another part of the main line containing the turning apparatus which concerns on one Embodiment of this invention. It is a side view showing a schematic structure of a turning device concerning one embodiment of the present invention. It is a side view showing a schematic structure of a turning device concerning one embodiment of the present invention. It is a side view which shows schematic structure of the jumping-out prevention mechanism of the turning apparatus which concerns on one Embodiment of this invention. It is a top view which shows schematic structure of the rotation safety pin end stopper and rotation safety pin end stopper groove | channel of the turning apparatus which concerns on one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram showing a schematic configuration of a machining line as an embodiment according to the present invention.
The machining line appropriately performs various processes while intermittently conveying a plurality of workpieces. As the workpiece, for example, a cylinder block and a head of an automobile engine can be employed.

The machining line includes a main line 11, a side line 12, and a side line 13.
The main line 11 is a path that sequentially conveys the work for each of the five sections 15-1 to 15-5.
Hereinafter, when there is no need to individually distinguish the sections 15-1 to 15-5, these are collectively referred to as the section 15. As for the two sections 15 arranged in succession, the front section 15 is referred to as a pre-process section 15, and the rear section 15 is referred to as a post-process section 15.
The side line 12 is a path for paying out the work from the main line 11.
The armpit line 13 is a path through which the work paid out from the main line 11 is input to the main line 11.

One section 15 is provided with one or more processing machines 21 and a loader 22.
The processing machine 21 is a machine tool that performs predetermined processing on a workpiece.
The loader 22 conveys the workpiece by using the main line 11 from the input place to the payout place in the section 15 as a movable range. As will be described later, since the main line 11 between the two sections 15 is configured by the conveyor device 23 using the influence of gravity, a difference in height occurs in the main line 11. The loader 22 can absorb this height difference.

  Various other devices can be further arranged in or before and after the section 15. For example, the inspection device 27 is disposed between the section 15-3 and the section 15-4. In the section 15-5, in addition to the two processing machines 21, a measuring instrument 28 is further provided. A washing machine 29 is arranged at a stage subsequent to the final section 15-5 of the main line 11.

The main line 11 connecting the section 15 in the previous process and the section 15 in the subsequent process is configured by a conveyor device 23 that uses the influence of gravity. That is, the conveyor device 23 conveys the workpiece from the payout location of the section 15 in the previous process to the input position of the section 15 in the subsequent process by using the influence of gravity.
The side-out line 12 at the payout location of the section 15 in the previous process is configured by a conveyor device 24 that uses the influence of gravity. In other words, the conveyor device 24 conveys the workpiece from the payout location of the section 15 in the previous process to the predetermined location outside the main line 11 using the influence of gravity. As a result, the workpiece is paid out from the main line 11.
The armpit line 13 at the input location of the post-process section 15 is constituted by a conveyor device 25 that uses the influence of gravity. That is, the conveyor device 25 conveys the workpiece from a predetermined location outside the main line 11 to the input location of the post-process section 15 using the influence of gravity. As a result, the work is put into the main line 11.
The details of the configuration of the conveyor devices 23 to 25 will be described later with reference to FIGS. 2 to 5.

  When it is necessary to change the advancing direction of the workpiece in the main line 11, a turning device 26 is provided that changes the advancing direction of the workpiece using the influence of gravity. In the present embodiment, four swiveling devices 26 are disposed between the section 15-3 and the section 15-4. Details of the configuration and the like of the turning device 26 will be described later with reference to FIGS.

Next, details of the conveyor device 23 will be described with reference to FIGS. 2 to 5.
FIG. 2 is a side view illustrating a schematic configuration of the conveyor device 23.
The right side in FIG. 2 is the section 15 side of the previous process, and the left side in FIG. 2 is the section 15 side of the subsequent process. In FIG. 2, three workpieces 61a to 61c are illustrated, but this is an example. In the case where it is not necessary to individually distinguish the works 61a to 61c, these are collectively referred to as a work 61 hereinafter.

The conveyor device 23 includes a plurality of conveyor rolls 41, a connecting member 42, a locking member 43, and a plurality of stop mechanisms 44.
The connecting member 42 is disposed to be inclined at a predetermined angle with respect to the horizontal direction.
The plurality of conveyor rolls 41 are arranged on the connecting member 42 so as to rotate around the respective rotation axes that are perpendicular to the length direction of the connecting member 42 and parallel to each other. Is placed. Hereinafter, the length direction of the connecting member 42 and from the top to the bottom will be referred to as an inclination direction.
That is, among the ends in the length direction of the connecting member 42, the conveyor roll 41 disposed at the end 23 s on the section 15 side (right side in FIG. 2) in the previous process is positioned at a high place, and the section 15 side in the subsequent process The plurality of conveyor rolls 41 are arranged with an inclination so that the conveyor rolls 41 arranged on the end 23e (left side in FIG. 2) are located in a low place. Thereby, the work 61 paid out to the payout place (near the end 23 s) of the section 15 in the previous process is conveyed by the plurality of conveyor rolls 41 with the inclination direction of the connecting member 42 as the traveling direction due to the influence of gravity.
The locking member 43 is disposed at the end 23e of the connecting member 42, and locks the work 61 that has been conveyed to the input place (near the end 23e) of the partition 15 in the subsequent process.

Each of the plurality of stop mechanisms 44 is disposed at substantially equal intervals in the inclination direction of the connecting member 42 and stops the moving work 61. For example, in this embodiment, four stop mechanisms 44 are provided. The number of stop mechanisms 44 depends on the length of the connecting member 42 and is not limited to four in the present embodiment.
FIG. 3 is a top view showing a schematic configuration of the stop mechanism 44. 4 and 5 are side views showing a schematic configuration of the stopping mechanism 44, and schematically showing how the workpiece is conveyed. 4 and 5, the connecting member 42 is drawn without being inclined for the sake of space, but actually, the connecting member 42 is inclined and disposed as shown in FIG. 2.

The stop mechanism 44 includes a support shaft 51, a stopper roll support arm 52, an engagement roll support arm 53, an elastic body 54, an engagement roll 55, a stopper roll 56, and a flange 57.
The support shaft 51 is attached to the connecting member 42 substantially perpendicular to the traveling direction of the work 61.
An engagement roll support arm 53 is disposed on the support shaft 51 on the side of the work 61 in the direction of travel, and a stopper roll support arm 52 is disposed on the side opposite to the direction of travel of the work 61.
The stopper roll support arm 52 has an L-shape, and one end of the L-shape is attached to the support shaft 51 so that the stopper roll support arm 52 can rotate about the support shaft 51 and the work traveling direction as a radial direction. A stopper roll 56 is rotatably attached to the other end of the L-shape of the stopper roll support arm 52. A flange 57 is attached to the L-shaped bent portion of the stopper roll support arm 52.
One end of the engagement roll support arm 53 is attached to the support shaft 51 so that the engagement roll support arm 53 can be rotated with the support shaft 51 as a center and the work traveling direction as a radial direction. An engagement roll 55 is rotatably attached to the other end of the engagement roll support arm 53.
The elastic body 54 is configured by a spring, for example, and is disposed between the engagement roll support arm 53 and the connecting member 42 so as to bias the engagement roll support arm 53 upward.

  That is, the engagement roll 55 and the stopper roll 56 are connected by a link mechanism including a support shaft 51, a stopper roll support arm 52, and an engagement roll support arm 53. In this link mechanism, the connected engagement roll 55 and stopper roll 56 can be integrated and rotated around the support shaft 51 with the traveling direction of the work 61 as the radial direction. However, the rotation angle is limited to a certain angle determined within the expansion / contraction range of the elastic body 54. Focusing only on the movement around the position where the conveyor roll 41 is disposed, the link mechanism moves the engagement roll 55 in one of the vertical directions, and moves the stopper roll 56 in the other vertical direction (reverse direction) in conjunction with this movement. Can be moved to.

The stop mechanism 44 can take either the state shown on the right side of FIG. 4 or the state shown on the right side of FIG.
The state shown on the right side of FIG. 4 is a state of the stop mechanism 44 before the work 61 is conveyed, and is hereinafter referred to as an initial state. That is, in the initial state, the engagement roll 55 can be engaged and pressed by its own weight without being engaged with the workpiece 61 that has been conveyed (for example, the workpiece 61b in the examples of FIGS. 4 and 5). It arrange | positions so that it may protrude above the conveyor roll 41 to the extent. On the other hand, the stopper roll 56 is disposed below the conveyor roll 41.
In the initial state, when the conveyed work 61 is engaged with the engagement roll 55, the engagement roll 55 is moved downward by the pressing force of the work 61, and the engagement roll 55 and the link mechanism (support shaft) are moved. 51, the stopper roll support arm 52, and the engagement roll support arm 53) are rotated counterclockwise in FIG. 4 with the support shaft 51 as the center and the traveling direction of the work 61 as the radial direction. To do. As a result, the state of the stop mechanism 44 changes from the initial state to the state shown on the right side of FIG. The state shown on the right side of FIG. 5 is a state where the conveyed work 61 stays on the stop mechanism 44, and is hereinafter referred to as a work staying state. That is, in the work retention state, the stopper roll 56 that has been moved upward as the engagement roll 55 moves downward can lock the work 61 that is conveyed following the work 61 that is engaged with the engagement roll 55. It arrange | positions so that it may protrude above the conveyor roll 41 as much as possible.

Next, the operation of the conveyor device 23 will be described with reference to FIGS. 2 to 5, taking as an example the case where the workpieces 61 a to 61 c are put in that order.
In the initial state, it is assumed that the first work 61a is paid out by the loader 22 to the payout place (in the vicinity of the end 23s of the connecting member 42) of the section 15 in the previous process shown in FIG. In this case, the workpiece 61a is conveyed by the plurality of conveyor rolls 41 with the inclination direction of the connecting member 42 as the traveling direction due to the influence of gravity.
When the work 61a is transported to the insertion place (near the end 23e of the connecting member 42) of the section 15 in the subsequent process and engages with the engagement roll 55 of the first stop mechanism 44 from the left in FIG. The combined roll 55 is pressed by the dead weight of the work 61a and moves downward. Then, the state of the first stop mechanism 44 from the left in FIG. 2 transitions from the initial state to the work retention state.
Thereafter, the workpiece 61 a is conveyed to the locking member 43 and is locked by the locking member 43.
In this way, the work 61a is transported from the dispensing location in the section 15 in the previous process to the input location in the section 15 in the subsequent process. During this time, the workpiece 61a is conveyed while being engaged with the engagement rolls 55 of the plurality of stop mechanisms 44. Therefore, each engagement roll 55 of the plurality of stop mechanisms 44 fulfills a brake function for the moving workpiece 61a. Thereby, the speed at which the workpiece 61a reaches the locking member 43 is reduced as compared with the case where the workpiece 61a continues to be accelerated by gravity. As a result, it is possible to prevent the workpiece 61a from colliding with the locking member 43 and being damaged.

While the work 61a stays at the input position of the post-process section 15, the first stop mechanism 44 from the left in FIG. 2 maintains the work staying state. In this state, it is assumed that the work 61b is paid out by the loader 22 to the payout place of the section 15 in the previous process.
In this case, the work 61b is conveyed by the plurality of conveyor rolls 41 with the inclination direction of the connecting member 42 as the traveling direction due to the influence of gravity.
During this time, since the first stop mechanism 44 from the left in FIG. 2 maintains the workpiece retention state, the stopper roll 56 is disposed so as to protrude above the conveyor roll 41. Therefore, when the workpiece 61 b is conveyed to the stopper roll 56 of the first stop mechanism 44 from the left in FIG. 2, the workpiece 61 b is locked by the stopper roll 56.
At this time, each of the engagement rolls 55 (except the first one from the left in FIG. 2) of the plurality of stop mechanisms 44 similarly performs a brake function on the moving workpiece 61b. As a result, the speed at which the work 61b reaches the stopper roll 56 is reduced as compared with the case where the work 61b continues to be accelerated by gravity. As a result, it is possible to prevent the workpiece 61b from colliding with the stopper roll 56 and being damaged.

Next, it is assumed that the work 61c is paid out by the loader 22 to the payout place of the section 15 in the previous process. In this case, the work 61c is conveyed by the plurality of conveyor rolls 41 with the inclination direction of the connecting member 42 as the traveling direction due to the influence of gravity.
While the work 61a and the work 61b are staying, each of the first and second stop mechanisms 44 from the left in FIG. 2 is in the work staying state. That is, the stopper rolls 56 of the first and second stop mechanisms 44 from the left in FIG. 2 are arranged so as to protrude above the conveyor roll 41.
Therefore, when the work 61c is conveyed to the stopper roll 56 of the second stop mechanism 44 from the left in FIG. 2, the work 61c is locked by the stopper roll 56. Thereby, as shown in FIG. 2, the three workpieces 61a to 61c can continue to stay without colliding with each other.

Next, it is assumed that the work 61 a staying in the input place of the post-process section 15 is input to the post-process section 15 by the loader 22. In this case, since the first stop mechanism 44 from the left in FIG. 2 is released from the weight of the work 61a, the engagement roll 55 is moved upward by the upward biasing force of the elastic body 54 and the weight of the weight 57. Move to. The stopper roll 56 connected by the engagement roll 55 and the link mechanism (the support shaft 51, the stopper roll support arm 52, and the engagement roll support arm 53) is centered on the support shaft 51, and the traveling direction of the workpiece is a radial direction. It rotates clockwise in FIG. As a result, the first stop mechanism 44 from the left in FIG. 2 transitions from the workpiece retention state to the initial state.
Then, the staying work 61b resumes conveyance, and is latched by the latching member 43 when it is conveyed to the input place of the section 15 in the subsequent process.
As a result, the first stop mechanism 44 from the left in FIG. 2 transitions from the initial state to the staying state. On the other hand, the second stop mechanism 44 from the left in FIG. 2 transitions from the workpiece retention state to the initial state.
Then, the staying work 61c resumes conveyance, and when it is conveyed to the stopper roll 56 of the first stop mechanism 44 from the left in FIG.
As a result, the second stop mechanism 44 from the left in FIG. 2 transitions from the initial state to the work retention state. On the other hand, the third stop mechanism 44 from the left in FIG. 2 transitions from the workpiece retention state to the initial state.

  By repeating the operation of the conveyor device 23 described above, the plurality of workpieces 61 are intermittently conveyed without colliding with each other.

According to the conveyor apparatus 23 of this embodiment, there exist the following effects.
(1) The connecting member 42 of the conveyor device 23 of the present embodiment is disposed so as to be inclined at a predetermined angle with respect to the horizontal direction. In addition, the plurality of conveyor rolls 41 according to the present embodiment are arranged on the connecting member 42 so as to be arranged in a plane so as to rotate around respective rotation axes that are perpendicular to the length direction of the connecting member 42 and parallel to each other. Then, the work 61 is placed. Thereby, conveyance of the workpiece | work 61 using the influence of gravity is attained. Therefore, the investment of the entire machining line can be suppressed as compared with the case of using a conventional conveyor device on which a drive roll driven by an external device such as a motor is mounted. Moreover, since energy discharge, such as electric power and air, can be suppressed, an energy-saving machining line can be easily constructed. Furthermore, since the conveyor device 23 having a simple structure that does not require a motor, a phototube or the like can be manufactured, the durability against cutting oil or the splash of the facet peculiar to the machining line is improved, and the machine with few failures. It is easy to build a processing line.

(2) In the conveyor device 23 of the present embodiment, the engagement roll 55 that is not engaged with the workpiece 61 is disposed so as to protrude above the conveyor roll 41, and the engagement roll 55 and the link mechanism (support shaft 51). The stopper roll 56 connected by the stopper roll support arm 52 and the engagement roll support arm 53) is disposed below the conveyor roll 41. When the conveyed first work 61 (for example, the work 61a) is engaged with the engagement roll 55, the engagement roll 55 is pressed by the pressing force of the first work 61 against the engagement roll 55. The stopper roll 56 that moves downward and is connected to the engagement roll 55 by the link mechanism moves so as to protrude above the conveyor roll 41.
Thereby, the stopper roll 56 can latch the 2nd workpiece | work 61 (for example, workpiece | work 61b) conveyed following the 1st workpiece | work 61. FIG. That is, the stopper roll 56 has a function of preventing the workpiece 61 from colliding.
Further, when the engaging roll 55 moves downward by its own weight of the first work 61 that stays, the connected stopper roll 56 moves so as to protrude upward, thereby preventing the work 61 from colliding. The function is activated. As described above, the engagement roll 55 has a function of a switch that activates the collision preventing function of the work 61.
Further, the work 61 is conveyed while being engaged with the engagement rolls 55 of the plurality of stop mechanisms 44. Therefore, the engagement roll 55 has a brake function for the moving work 61. As a result, the speed at which the work 61 reaches the locking member 43 and the stopper roll 56 is reduced, so that the work 61 is prevented from being damaged when colliding with the locking member 43 and the stopper roll 56. It becomes possible.
By realizing such various functions, it is possible to safely and smoothly carry out intermittent conveyance of the plurality of workpieces 61 using the influence of gravity.

  The configuration and operation details of the conveyor device 23 have been described above with reference to FIGS. 2 to 5. Although illustration and description are omitted, the conveyor device 24 and the conveyor device 25 also have the same configuration as the conveyor device 23 and perform the same operation as the conveyor device 23. Therefore, the conveyor device 24 and the conveyor device 25 of the present embodiment can also achieve the effects (1) and (2) in the same manner.

Next, the details of the turning device 26 will be described with reference to FIGS.
FIG. 6 is a top view showing a schematic configuration of a part of the main line 11 including the turning device 26. FIG. 7 is a perspective view showing a schematic configuration of another part of the main line 11 including the turning device 26.
As shown in FIG. 6, the swivel device 26 is disposed between two conveyor devices 23 in which the traveling directions of the work 61 indicated by white arrows in the drawing are different from each other by approximately 90 degrees.
As shown in FIG. 7, there is a height difference between the payout position 23 i of the conveyor device 23 on the section 15 side in the previous process and the input position 23 o of the conveyor device 23 on the section 15 side in the subsequent process. The workpiece | work 61 is thrown into the turning apparatus 26 from the delivery position 23i of the conveyor apparatus 23 by the side of the division 15 of a front process. The turning device 26 uses the dead weight of the loaded work 61 to turn the work 61 approximately 90 degrees while moving the work 61 downward. The work 61 that is moved downward by the turning device 26 and turned about 90 degrees is delivered to the loading position 23o of the conveyor device 23 on the side of the section 15 in the subsequent process.

Hereinafter, the direction in which the work 61 before the downward movement and the turning is thrown into the turning device 26 is referred to as a workpiece feeding direction. In the example of FIG. 7, the direction from the payout position 23 i of the conveyor device 23 on the section 15 side in the previous process toward the turning device 26, that is, the direction from the left side to the right side in FIG.
Hereinafter, the direction in which the workpiece 61 after the downward movement and turning is paid out from the turning device 26 is referred to as a workpiece paying direction. In the example of FIG. 7, the direction from the turning device 26 toward the loading position 23 o of the conveyor device 23 on the partition 15 side in the subsequent process, that is, the direction from the back side to the near side in FIG.

FIG. 8 is a side view showing a schematic configuration of the turning device 26. Specifically, FIG. 8 shows a side surface in a substantially vertical direction with respect to a workpiece loading direction indicated by a white arrow in the side surface of the swivel device 26.
FIG. 9 is a side view showing a schematic configuration of the turning device 26. Specifically, FIG. 9 shows a side surface in a substantially vertical direction with respect to the workpiece paying direction indicated by a white arrow in the side surface of the swivel device 26.
That is, FIG. 8 shows a state before the turning device 26 moves down and turns. FIG. 9 shows a state after the turning device 26 has moved down and turned.

  The swivel device 26 includes a pedestal 71, a cylinder 72, an elastic body 73, a guide pin 74, a support structure 75, a plurality of conveyor rolls 76, a rotation connecting member 77, a pop-out prevention mechanism 78, a workpiece. Detection mechanism 79, safety pin 80 at the time of insertion, rotation fixing groove 81 at the time of insertion, safety pin 82 at the time of delivery, payout side rotation fixing groove 83, safety pin end stopper 84, safety rotation pin end stopper groove 85 And a pop-out prevention release bar 86.

Hereinafter, each component of the turning device 26 will be described.
The rotary connecting member 77 is disposed so as to be inclined at a predetermined angle with respect to the horizontal direction.
The plurality of conveyor rolls 76 are arranged in a plane on the rotary connecting member 77 so as to rotate around the respective rotation axes that are perpendicular to the length direction of the rotary connecting member 77 and parallel to each other, and the workpiece 61 Is placed.
In the coordinate system of the space in which the turning device 26 is disposed, as described above with reference to FIG. 7, the workpiece input direction and the workpiece payout direction are shifted from each other by approximately 90 degrees. However, in the coordinate system above the rotary connecting member 77, the workpiece input direction and the workpiece payout direction coincide with each other. That is, in the coordinate system above the rotary connecting member 77, the direction from the end 77a on the side where the workpiece 61 is thrown before the downward movement and turning is directed to the end 77b on the side where the workpiece 61 is paid out after the downward movement and turning. , The workpiece input direction and the workpiece dispensing direction.
Accordingly, among the ends of the rotary connecting member 77, the conveyor roll 76 disposed at the right end 77a in FIG. 8 is positioned at a high place, and the conveyor roll 76 disposed at the left end 77b in FIG. A plurality of conveyor rolls 76 are arranged with an inclination so as to be located at a place.
As a result, the workpiece 61 thrown into the right end 77a in FIG. 8 is conveyed by the plurality of conveyor rolls 76 with the inclination direction of the rotary connecting member 77 as the workpiece feeding direction due to the influence of gravity.

The cylinder 72 is disposed inside the center of the pedestal 71 so that it can turn while moving in the vertical direction with the position shown in FIG. 8 as the upper limit position and the position shown in FIG. 9 as the lower limit position.
The upper end portion of the cylinder 72 is attached to the support structure 75. The support structure 75 is further provided with a rotation connecting member 77 and a pop-out prevention mechanism 78. An elastic body 73 composed of a spring or the like is disposed below the lower end portion of the cylinder 72. That is, the elastic body 73 is connected to the cylinder 72, supports the cylinder 72, and biases upward. In other words, the cylinder 72 urges the rotary connecting member 77 upward by the elastic body 73 via the support structure 75.
When the workpiece 61 conveyed in the workpiece loading direction is locked by a pop-out prevention mechanism 78 described later, the cylinder 72 moves down against the urging force of the elastic body 73 due to its own weight.
The cylinder 72 rotates while being guided by the guide pin 74 while moving downward. That is, the lead groove 91 is formed in the cylinder 72 along a locus through which the guide pin 74 passes when the cylinder 72 is moved downward and turned. One end of the guide pin 74 is fixed to the mount 71 and the other end is inserted into the lead groove 91. The guide pin 74 guides the turning of the cylinder 72 by moving in the lead groove 91 while maintaining the insertion state when the cylinder 72 moves downward. In this way, the cylinder 72 moves downward and turns from the upper limit position, and moves to the lower limit position by turning approximately 90 degrees.
After the cylinder 72 is moved down and turned, the state shown in FIG. 9 is reached. When the work 61 is paid out from the turning device 26 as will be described later, the cylinder 72 is released from its own weight and the elastic body 73 is moved. It moves up by the upward biasing force. At this time, the guide pin 74 maintains the insertion state and moves in the lead groove 91, thereby turning the cylinder 72 in the reverse direction. In this manner, the cylinder 72 moves upward and downward from the lower limit position and turns to the upper limit position by turning approximately 90 degrees.
The lead groove 91 may be set such that the relationship between the moving distance L in the vertical direction of the cylinder 72 and the turning angle θ is, for example, θ / L = C (C is a constant), or rotational connection. In consideration of the acceleration during rotation of the member 77, θ / L may be set to change according to the movement distance L.

The pop-out prevention mechanism 78 locks the workpiece 61 that has been transported in the workpiece loading direction. As shown in FIG. 8, the locked state of the workpiece 61 by the pop-out prevention mechanism 78 is maintained until the downward movement and turning of the cylinder 72 are stopped. The pop-out prevention release bar 86 releases the locked state of the work 61 by the pop-up prevention mechanism 78 as shown in FIG. As a result, the workpiece 61 starts to be conveyed in the workpiece dispensing direction indicated by the white arrow in FIG.
FIG. 10 is a side view showing a schematic configuration of the pop-out prevention mechanism 78 and the pop-out prevention release bar 86.
The pop-out prevention mechanism 78 includes a first moving member 101, a second moving member 102, a connecting member 103, and a locking member 104.
The first moving member 101 is disposed so as to be movable in the vertical direction at the tip of the end 77 b (FIG. 8) of the rotary connecting member 77.
The second moving member 102 moves in the vertical direction so as to contact the pop-up prevention release bar 86 fixed to the pedestal 71 as shown in FIG. It is possible to arrange.
The connecting member 103 is inserted into the groove on the lower end side of the first moving member 101 and the groove on the upper end side of the second moving member 102 respectively at both ends of the cam structure, and rotates about a fulcrum (not shown) as an axis. Thus, the first moving member 101 and the second moving member 102 are connected so as to be movable in the opposite directions.
The locking member 104 is attached to the upper end portion of the first moving member 101. Prior to loading the work 61, as shown in FIG. 10a, the locking member 104 at the upper end portion of the first moving member 101 can move the loaded work 61 to the conveyor roll 76. It is arranged so as to protrude above. That is, in this state, when the workpiece 61 is loaded and conveyed by the plurality of conveyor rolls 76, the workpiece 61 is locked by the locking member 104.
As described above, the pop-out prevention mechanism 78 is connected to the cylinder 72 and the rotary connecting member 77 by the support structure 75. Therefore, when the cylinder 72 moves downward and turns due to the weight of the work 61 locked by the locking member 104, the pop-out prevention mechanism 78 also moves downward and turns in conjunction with the cylinder 72. During the downward movement and turning of the pop-out prevention mechanism 78, the vertical positional relationship between the first moving member 101 and the second moving member 102 is maintained as shown in FIG. 10a.
Immediately before the turning angle of the cylinder 72 reaches approximately 90 degrees, the lower end of the second moving member 102 contacts the pop-out prevention release bar 86 as shown in FIG. Further, when the cylinder 72 moves down and turns, the second moving member 102 moves up by the upward pressing force of the pop-up prevention release bar 86. Then, the connecting member 103 connected to the second moving member 102 rotates counterclockwise in FIG. 10 about a fulcrum (not shown), so that the first moving member 101 connected to the connecting member 103 moves downward. To do. Along with this, the locking member 104 at the upper end of the first moving member 101 also moves downward, so that the locked state of the work 61 by the locking member 104 is released. Thereby, the work 61 is discharged from the swivel device 26 by being further conveyed by the plurality of conveyor rolls 76 with the inclination direction of the rotation connecting member 77 as the work discharge direction due to the influence of gravity.

Returning to FIG. 8, the timing at which the cylinder 72 located at the upper limit position starts to move down and turn is the timing at which the thrown-in work 61 is locked by the jumping prevention mechanism 78 to complete the throwing (hereinafter referred to as the throwing completion timing). It is good to do after. If the lowering and turning of the cylinder 72 are started at a timing earlier than that, there is a danger that the workpiece 61 being dropped falls or the like.
Further, the timing at which the cylinder 72 existing at the lower limit position shown in FIG. 9 starts to move up and turn is the timing at which the delivery of the workpiece 61 whose locking of the ejection preventing mechanism 78 is released (hereinafter, the delivery completion timing). It is better to call it after. If the upward movement and turning of the cylinder 72 is started at a timing earlier than that, the workpiece 61 being paid out falls and is dangerous.
Therefore, in order to detect the insertion completion timing and the payout completion timing, a workpiece detection mechanism 79 is provided at the end 77b of the rotary connecting member 77 as shown in FIGS.
The workpiece detection mechanism 79 includes a detection bar 111, a connection bar 112, a shaft 113, an end stopper support bar 114, and an engaging portion 115.
A lower part from the center of the detection bar 111 and an upper end part of the end stopper support bar 114 are connected by a connection bar 112. The detection bar 111 and the end stopper support bar 114 connected by the connection bar 112 can rotate around the shaft 113 with the inclination direction (work input direction and work discharge direction) of the rotary connection member 77 as a radial direction. It becomes. In other words, the detection bar 111 to the end stopper support bar 114 constitute a link mechanism.
A spring 131 is provided between a portion of the connection bar 112 on the connection side with the end stopper support bar 114 and the support structure 75.
An engaging portion 115 that engages with the work 61 is provided at the upper end of the detection bar 111. At the lower end of the detection bar 111, a payout safety pin 82 incorporating a spring 82S is provided so as to protrude to the right side in FIG. Above the lower end of the detection bar 111, a closing safety pin 80 is provided so as to protrude to the left in FIG. That is, the closing safety pin 80 and the dispensing safety pin 82 are provided so as to protrude on the opposite sides of the detection bar 111.
A rotation safety pin end stopper 84 is provided at the lower end of the end stopper support bar 114.

FIG. 11 is a top view showing a schematic configuration of such a safety pin 80 at the time of insertion, a safety pin 82 at the time of withdrawal, and a rotation safety pin end stopper 84.
Note that, as is apparent from FIGS. 8 and 9, the spring 82S is connected only to the payout safety pin 82 and not to the closing safety pin 80.

When the cylinder 72 exists at the upper limit position and the workpiece 61 has not been put in yet, the workpiece detection mechanism 79 is arranged so that the engaging portion 115 protrudes above the conveyor roll 76 at the end 77b of the rotary connecting member 77. Is placed. In this case, the closing safety pin 80 is inserted into the closing-side rotation fixing groove 81 formed at the upper left end of the gantry 71 in FIG. Further, as shown in FIG. 11, the rotational safety pin end stopper 84 is inserted into a rotational safety pin end stopper groove 85 formed in the outer peripheral portion of the part 121 that houses the cylinder 72 in the gantry 71. That is, the safety pin 80 and the safety pin end stopper 84 at the time of closing are in a locked state, and the cylinder 72 is prohibited from moving. Such a state of the workpiece detection mechanism 79 is hereinafter referred to as an initial state.
Thereafter, when the workpiece 61 is loaded and conveyed by a plurality of conveyor rolls 76, the workpiece detection mechanism 79 maintains the initial state until the workpiece 61 is engaged with the engaging portion 115. That is, when the work 61 is being put in, the throwing safety pin 80 and the rotation safety pin end stopper 84 are kept locked, so that the movement of the cylinder 72 is prohibited and the work 61 can be prevented from dropping.
When the inserted work 61 is engaged with the engaging portion 115, the engaging portion 115 is pressed by the weight of the work 61 and moves downward. As a result, the engaging portion 115 detects the closing completion timing.
When the closing completion timing is detected, that is, when the engaging portion 115 moves downward, the link mechanism constituted by the detection bar 111 to the end stopper support bar 114 is tilted around the shaft 113. It rotates counterclockwise in FIG. 8 with the direction (work feeding direction) as the radial direction. Then, as shown by the arrow 201 in FIG. 11, the locking safety pin 80 is released from the loading side rotation fixing groove 81 to release the lock, and the rotation safety pin end stopper 84 is moved from the rotation safety pin end stopper groove 85. The lock is released when it comes off. Thereby, the movement of the cylinder 72 is permitted, and the downward movement and the turning are started. Hereinafter, such a state of the workpiece detection mechanism 79 is referred to as a downward movement turning state.

In this way, when the workpiece detection mechanism 79 detects the closing completion timing and the state transitions from the initial state to the downward swinging state, the locking of the closing safety pin 80 and the rotating safety pin end stopper 84 is released, and the cylinder 72 downward movement and turning starts.
During the downward movement and turning of the cylinder 72, the carry-in rotation safety pin end stopper 84 is interlocked with the turning of the cylinder 72, as shown by the arrow 202 in FIG. Move along. Similarly, the closing safety pin 80 and the dispensing safety pin 82 also move in conjunction with the turning of the cylinder 72.

When the cylinder 72 moves down and turns and the turning angle reaches approximately 90 degrees, a payout safety pin 82 is formed on the side surface of the pop-up prevention release bar 86 as shown by an arrow 203 in FIGS. Is inserted into the payout-side rotation fixing groove 83. That is, the payout safety pin 82 is locked and the movement of the cylinder 72 is prohibited. Such a state of the workpiece detection mechanism 79 is hereinafter referred to as a turning stop state.
Note that immediately before the transition to the turning stop state, the payout safety pin 82 moves so as to be in contact with the side surface of the jump prevention release bar 86 in the vicinity of the payout side rotation fixing groove 83. On this side surface, as depicted in the vicinity of the arrow 203 in FIG. 11, a portion having an inclination with respect to the concave portion of the payout-side rotation fixing groove 83 (drawn with a dotted line at the tip of the arrow 202 in the figure). There is a portion where the safety pin 82 is in contact with the payout portion) and a parallel portion (the right portion between the starting point of the arrow 203 and the turn down in the figure). For this reason, the payout safety pin 82 is configured to be extendable and contractable by a built-in spring 82S so that the safety pin 82 can move while contacting from an inclined portion to a parallel portion.
When the workpiece detection mechanism 79 enters the turning stop state, the workpiece 61 is paid out from the turning device 26 as described above. As a result, the workpiece detection mechanism 79 is released from its own weight. Then, the link mechanism composed of the detection bar 111 to the end stopper support bar 114 has the inclination direction (work feeding direction) of the rotary connecting member 77 as the radial direction around the shaft 113 due to the restoring force of the spring 131. Turns 9 counterclockwise. At this time, as shown by an arrow 204 in FIG. 11, the payout safety pin 82 provided at the lower end of the detection bar 111 is released from the payout side rotation fixing groove 83 to be unlocked. Thereby, the movement of the cylinder 72 is permitted. Such a state of the workpiece detection mechanism 79 is hereinafter referred to as an upward movement turning state.
Here, as shown in FIG. 11, a recessed portion 121 a is formed in the outer peripheral portion of the portion 121 of the gantry 71. Therefore, when the turning stop state is changed to the upward movement turning state, the rotation safety end stopper 84 moves until it comes into contact with the recessed portion 121a as shown by an arrow 204 in FIG.
As described above, when the workpiece 61 is paid out from the turning device 26 and released from its own weight, the state of the workpiece detection mechanism 79 changes from the turning stop state to the upwardly moving turning state. At this time, the engaging portion 115 moves upward and is disposed so as to protrude above the conveyor roll 76 at the end 77 b of the rotary connecting member 77. In this way, the workpiece detection mechanism 79 detects the payout completion timing.
When the workpiece detection mechanism 79 detects the payout completion timing, that is, when the state transitions from the turning stop state to the upward movement turning state, the payout safety pin 82 is unlocked, and the cylinder 72 starts to move upward and turn. .
During the upward movement and turning of the cylinder 72, the rotational safety pin end stopper 84 is interlocked with the turning of the cylinder 72 in the direction opposite to the downward movement, as indicated by an arrow 205 in FIG. It moves along the hollow part of the outer peripheral part of the part 121. Similarly, the closing safety pin 80 and the dispensing safety pin 82 also move in conjunction with the turning of the cylinder 72 in the opposite direction to that of the downward movement.
As shown in FIG. 8, when the cylinder 72 moves up and turns and returns to the upper limit position, the safety pin 80 at the time of closing is reinserted into the closing side rotation fixing groove 81 to be locked, and the rotation safety pin end stopper 84 is It is inserted again into the rotational safety pin end stopper groove 85 to be locked. In this way, the workpiece detection mechanism 79 transitions from the upward swing state to the initial state.

Next, operation | movement of the above turning apparatus 26 is demonstrated using FIG. 8 and FIG.
As shown in FIG. 8, when the loaded work 61 is locked by the pop-out prevention mechanism 78, the work detection mechanism 79 detects the loading completion timing. As a result, the state of the workpiece detection mechanism 79 changes from the initial state to the downward movement turning state, the lock of the closing safety pin 80 and the rotation safety pin end stopper 84 is released, and the movement of the cylinder 72 is permitted.
Then, the cylinder 72 is guided by the guide pin 74 inserted into the lead groove 91 while turning downward due to its own weight. Along with this, the pop-out prevention mechanism 78 and the rotation connecting member 77 connected by the cylinder 72 and the support structure 75 also move downward and turn together.
As shown in FIGS. 9 and 10b, when the cylinder 72 turns approximately 90 degrees, the locking of the workpiece 61 by the pop-out prevention mechanism 78 is released. In addition, the state of the workpiece detection mechanism 79 is changed from the downward swing state to the swing stop state, and the payout safety pin 82 is inserted into the payout side rotation fixing groove 83 to be locked, and the movement of the cylinder 72 is prohibited.
The work 61 released from the locking by the pop-out prevention mechanism 78 is further conveyed by the plurality of conveyor rolls 76 with the inclination direction of the rotary connecting member 77 as the work paying direction due to the influence of gravity, and is discharged from the swivel device 26. Is done.
At this time, the workpiece detection mechanism 79 detects the payout completion timing. As a result, the state of the workpiece detection mechanism 79 changes from the turning stop state to the upward moving turning state, the lock of the payout safety pin 82 is released, and the movement of the cylinder 72 is permitted.
As a result, the cylinder 72 is moved upward by the upward biasing force of the elastic body 73, guided by the guide pin 74 inserted into the lead groove 91, and pivoted in the direction opposite to the downward movement.
As shown in FIG. 8, when the cylinder 72 moves upward and turns approximately 90 degrees to return to the upper limit position (original position), the state of the workpiece detection mechanism 79 changes from the upward movement turning state to the initial state and is turned on. The hour safety pin 80 and the rotation safety pin end stopper 84 are locked again, and the movement of the cylinder 72 is prohibited. Further, the state of the pop-out prevention mechanism 78 is also restored to the state shown in FIG.

  By repeating the operation of the turning device 26 described above, a plurality of workpieces 61 that are sequentially input are turned about 90 degrees while moving downward, and are sequentially discharged from the turning device 26.

According to the turning device 26 of the present embodiment, the following effects are obtained.
(1) The cylinder 72 connected to the rotation connecting member 77 of the swivel device 26 of the present embodiment is attached to the elastic body 73 by the dead weight of the work 61 when the work 61 is locked by the pop-out prevention mechanism 78. While moving downward against the force, it turns by the guide of the guide pin 74 inserted in the lead groove 91 and moves from the upper limit position to the lower limit position. The cylinder 72 is attached to the elastic body 73 when the workpiece 61 is released from its own weight by releasing the locking of the workpiece 61 by the pop-out prevention mechanism 78, that is, when the workpiece 61 is paid out. While moving upward by the force, the guide pin 74 inserted into the lead groove 91 can turn in the direction opposite to the downward movement to move from the lower limit position to the upper limit position.
That is, it is possible to change the moving direction of the workpiece and change the vertical position of the workpiece by using the influence of gravity.
As a result, the investment in the entire machining line can be suppressed as compared with the case of using a conventional turning device in which turning or vertical movement is driven by an external device such as a motor. Moreover, since energy discharge, such as electric power and air, can be suppressed, an energy-saving machining line can be easily constructed. Furthermore, since the swivel device 26 having a simple structure that does not require a motor, a phototube or the like can be manufactured, the durability against cutting oil or the splash of a facet peculiar to a machining line is improved, and a machine with few failures. It is easy to build a processing line.

(2) The pop-out prevention mechanism 78 of the swivel device 26 of the present embodiment is disposed at the tip of the lower end of the rotation connecting member 77 in the inclination direction, and engages the work 61 conveyed to the lower end. Stop.
Accordingly, when the work 61 is loaded and conveyed, or when the cylinder 72 is moved downward and swiveled, the work 61 is securely locked, so that the work 61 is prevented from jumping out and dropping. It becomes possible.

(3) The prevention release bar 86 of the turning device 26 of the present embodiment releases the locking of the workpiece 61 by the pop-out prevention mechanism 78 when the downward movement and turning of the cylinder 72 are stopped.
Thereby, after the downward movement and turning of the cylinder 72 are stopped, the workpiece 61 can be discharged more reliably.

(4) The workpiece detection mechanism 79 of the turning device 26 of this embodiment can detect the completion of the loading of the workpiece 61. The safety pin 80 and the safety pin end stopper 84 at the time of closing of the turning device 26 of the present embodiment are locked when the cylinder 72 is in the upper limit position, prohibiting the movement of the cylinder 72, and the workpiece detection mechanism 79 completes the closing. Is detected, the lock is released and the cylinder 72 is allowed to move.
Thereby, the completion of loading of the workpiece 61 can be detected, and before the completion of loading of the workpiece 61 is detected, the loading safety pin 80 and the rotation safety pin end stopper 84 are locked, and the movement of the cylinder is prohibited. When the completion of the insertion is detected, the safety pin 80 and the rotation safety pin end stopper 84 at the time of closing are unlocked, and the movement of the cylinder 72 is permitted. Therefore, the cylinder 72 is prevented from moving down and turning while the work 61 is being thrown in, and thus accidents such as dropping of the work 61 can be appropriately prevented.

(5) The workpiece detection mechanism 79 of the turning device 26 of the present embodiment can further detect the completion of the dispensing of the workpiece 61. The payout safety pin 82 of the turning device 26 of the present embodiment is locked when the downward movement and turning of the cylinder 72 are stopped, prohibiting the movement of the cylinder 72, and the work detection mechanism 79 detects the completion of the payout. In this case, the lock is released and the movement of the cylinder 72 is permitted.
As a result, when the downward movement and turning of the cylinder 72 are stopped, the safety pin 82 at the time of dispensing is locked and the movement of the cylinder 72 is prohibited, and thereafter the safety at the time of dispensing is detected until the completion of the dispensing of the work 61 is detected. Since the locked state of the pin 82 is maintained, the prohibition of the movement of the cylinder 72 is also maintained, and when the completion of the dispensing is detected, the locking of the safety pin 82 at the time of dispensing is released and the movement of the cylinder 72 is permitted. Therefore, the cylinder 72 is prevented from moving up and turning while the workpiece 61 is being dispensed, and therefore an accident such as dropping of the workpiece 61 can be prevented appropriately.

It should be noted that the present invention is not limited to the present embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
For example, the configuration of the stop mechanism provided in the conveyor device to which the present invention is applied is not particularly limited to the configuration of the stop mechanism 44 of the present embodiment, and the initial state and the workpiece retention state can be taken as the state. If it is. The initial state is a state in which the engagement roll is disposed so as to protrude above the conveyor roll, and the stopper roll is disposed below the conveyor roll. The work staying state means that the stopper roll moves so as to protrude above the conveyor roll and maintains its position as the engaging roll moves downward due to the pressing force of the work against the engaging roll. State.

  For example, in the present embodiment, the entire main line 11 connecting the section 15 of the previous process and the section 15 of the subsequent process is configured by the conveyor device 23. However, it is not necessary to configure the entire main line 11 with the conveyor device 23, and a part of the main line 11 may be configured with the conveyor device 23, and the remaining part may be configured with another. The same applies to the side line 12 and the payout line 13.

For example, in the swiveling device to which the present invention is applied, the configuration of the locking mechanism is not particularly limited to the configuration of the pop-out prevention mechanism 78 of the present embodiment, and is conveyed to the lower end in the inclination direction of the connecting member. Any structure that can lock the workpiece is acceptable.
The configuration of the release mechanism is not particularly limited to the configuration of the pop-out prevention release bar 86 of the present embodiment, and the workpiece can be unlocked by the locking mechanism when the downward movement and turning of the cylinder are stopped. Any configuration may be used.
The configuration of the detection mechanism is not particularly limited to the configuration of the workpiece detection mechanism 79 of the present embodiment, and may be any configuration that can detect the completion of workpiece input and workpiece discharge.
The structure of the safety pin at the time of closing is not particularly limited to the structure of the safety pin 80 at the time of turning on and the safety pin end stopper 84 at the time of this embodiment, and is locked when the cylinder exists at the upper limit position to prohibit the movement of the cylinder. Any configuration that can release the lock and allow the cylinder to move when the detection mechanism detects the completion of the insertion may be used.
The configuration of the safety pin at the time of payout is not particularly limited to the configuration of the safety pin 82 at the time of payout according to the present embodiment, and is locked when the downward movement and turning of the cylinder are stopped to prohibit the movement of the cylinder and Any configuration that can release the lock and allow the cylinder to move when the completion is detected may be used.
The arrangement position of the elastic body that urges the cylinder is not particularly limited below the lower end portion of the cylinder 72 of the present embodiment, and is a position that is connected to the cylinder, supports the cylinder, and can be urged upward. If it is.

  For example, the conveyor device 23 and the swivel device 26 according to an embodiment of the present invention are components of a machining line in the present embodiment, but are widely applied as components of various types of transport devices that transport workpieces. be able to.

DESCRIPTION OF SYMBOLS 11 Main line 12 Side extension line 13 Side entry line 15 Compartment 21 Processing machine 22 Loader 23, 24, 25 Conveyor device 26 Turning device 41 Conveyor roll 42 Connecting member 43 Locking member 44 Stop mechanism 51 Support shaft 52 Stopper roll support arm 53 Engagement roll support arm 54 Elastic body 55 Engagement roll 56 Stopper roll 61 Work 71 Mounting base 72 Cylinder 73 Elastic body 74 Guide pin 75 Support structure 76 Conveyor roll 77 Connecting member 78 Pop-up prevention mechanism 79 Work detection mechanism 80 Safety when loading Pin 81 Entry-side rotation fixing groove 82 Safety pin during delivery 83 Discharge-side rotation fixation groove 84 Rotation safety pin end stopper 85 Rotation safety pin end stopper groove 86 Pop-up prevention release bar 91 Lead groove 101 First moving member 102 Second moving member 1 03 Connecting member 104 Locking member

Claims (4)

A conveyor device that intermittently conveys a plurality of workpieces without contacting each other,
A connecting member disposed at a predetermined angle with respect to the horizontal direction;
A plurality of conveyor rolls on which the rotating shafts are arranged on the connecting member in a plane so as to be perpendicular to the longitudinal direction of the connecting member and parallel to each other, and on which the workpiece is placed,
A locking member for locking the workpiece that has been conveyed to the lower end in the length direction of the connecting member;
A plurality of stopping mechanisms arranged at equal intervals in the inclination direction of the connecting member, and stopping the workpieces of the plurality of workpieces being conveyed without contacting each other;
With
The stop mechanism is
An engagement roll engaged with the workpiece;
A stopper roll for locking the workpiece;
A link mechanism for connecting the engagement roll and the stopper roll so as to be movable in opposite directions;
Have
The link mechanism rotatably connects the engagement roll support arm connected to the engagement roll, the stopper roll support arm connected to the stopper roll, and the engagement roll support arm and the stopper roll support arm. A support shaft, and
The stop mechanism further includes an elastic body that urges the engagement roll support arm upward,
The stopper roll support arm has an L shape, and a weight is attached to the bent portion of the L shape,
The length from the one end connected to the support shaft of the stopper roll support arm to the bent portion of the L-shape is made longer than the length of the engagement roll support arm, and the engagement roll support arm and the support The shaft and the stopper roll support arm are formed so as to have a U-shape,
The engagement roll that is not engaged with the work is the conveyor by the biasing force of the elastic body against the engagement roll support arm and the weight of the weight applied to the bent portion of the L-shape of the stopper roll support arm. The stopper roll arranged above the roll and connected by the engagement roll and the link mechanism is arranged below the conveyor roll,
The engagement roll engaged with the workpiece is moved downward by the pressing force of the workpiece, and the link mechanism is rotated about the support shaft, so that the engagement roll and the link mechanism are connected. The stopper roll moves above the conveyor roll to lock the work that is conveyed following the engaged work,
A conveyor device, wherein the workpiece is disposed at a position where the workpiece is engaged with the engagement roll in a state where the workpiece is locked to the locking member and the stopper roll. A transport device comprising one or more lines for transporting a workpiece,
All or some of said one or more lines are comprised by the conveyor apparatus of Claim 1, The conveying apparatus characterized by the above-mentioned. The one or more lines are machining lines;
A main line that sequentially conveys the workpiece for each section including one or more machine tools;
A side-out line for paying out the workpiece from the main line;
An armpit line for feeding the discharged workpiece into the main line;
Have
The transport device further includes a loader capable of transporting the workpiece,
The conveying apparatus according to claim 2 , wherein all or a part of the one or more lines excluding the conveyor apparatus is configured as a line through which the work is conveyed by the loader. The workpiece is conveying device according to claim 2 or 3, characterized in that a cylinder block and head of an engine.

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