JP2010064238A - Apparatus and method of controlling component supply - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method of controlling component supply capable of automatically extending air injection time against reduction in an air flow rate while injecting the air to a plurality of supply paths. <P>SOLUTION: In a form having air injection ports 51 and 52 provided for injecting conveyance air to each of a plurality of supply paths 34 and 35 to supply a component 1 to a plurality of destinations 49 and 50, the air injection time of injecting the air to the plurality of the supply paths 34 and 35 to convey the component is defined as a time interval that is obtained by adding an extended time interval to the air injection time for injecting the air to one supply path 34 or 35 for conveying the component. The extended time interval is set by a timer means 81. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  According to the present invention, an air injection port for injecting conveying air is provided in each of the plurality of supply passages, and air is injected into any one or the plurality of supply passages of the plurality of supply passages to a plurality of target locations. The present invention relates to a component supply control device and a control method in a component supply type.

It is known in Japanese Patent No. 3581983 that parts from a parts feeder or the like are transferred to a plurality of supply passages via a distribution type supply device and supplied to a plurality of target locations. Further, Japanese Patent No. 4025912 discloses a technique in which a part is held at a temporary stop using a magnet, and then the part is transferred to an outlet passage and then the part delivery jet air is injected.
Japanese Patent No. 3581983 Japanese Patent No. 4025912

  Each of the plurality of supply passages is provided with an air injection port for injecting conveying air, and air is injected into any one of the plurality of supply passages or the plurality of supply passages to supply parts to a plurality of target locations. In the type, when air is injected into one supply passage, a sufficient air flow rate can be obtained, so that the component can reach the target location within a predetermined time. However, when a plurality of parts are conveyed by simultaneously injecting air into two or more supply passages, the flow rate of the injection air to each supply passage decreases, so the arrival time of the parts at the target location is the predetermined time. Will be exceeded.

  Such a phenomenon occurs when a single air supply is used. In other words, when air is injected from a single air supply source to one location, a sufficient air flow rate can be ensured. However, when air injection is performed at two or more locations, the flow rate and pressure of each injection air decrease. The part arrival time becomes longer. In particular, when the length of the supply passage is extremely long, such a problem becomes important. Further, when the length of the supply passage becomes remarkably long, it is necessary to use a long signal line to install a sensor or the like at a supply target location, and it is desirable to avoid the arrangement of such a signal line structurally.

  The present invention is provided to solve the above-described problems, and automatically extends the air injection time with respect to the reduction of the air flow rate when air is injected into a plurality of supply passages. An object of the present invention is to provide a component supply control device and a control method capable of performing the above.

Means to solve the problem

  The invention according to claim 1 is an invention of a component supply control device, wherein each of the plurality of supply passages is provided with an air injection port for injecting conveyance air, and one or more of the plurality of supply passages are provided. In the type of supplying air to a plurality of target locations by injecting air into the supply passage, the air injection time when the air is injected into the plurality of supply passages to carry the parts is reduced to one supply passage. It is characterized in that the extended time is added to the air injection time when parts are conveyed by air injection, and timer means for setting this extended time is provided.

The invention's effect

  As described above, the timer means for adding the extension time to the air injection time when the parts are conveyed by injecting air into one supply passage is provided, so that the air injection into the plurality of supply passages Thus, the air injection time when parts are being conveyed is extended. Therefore, even if a decrease in the air flow rate for each of the supply passages occurs due to the air injection in the plurality of supply passages, the air injection time is extended, so that the parts can be reliably reached at the target location. This means that if the air injection time is insufficient due to a decrease in the air flow rate when the supply passage is extremely long, the components may not reach the target location and may stop in the middle of the supply passage. Therefore, the occurrence of such a problem can be avoided.

  Further, since the air injection time is extended by the timer means, it is not necessary to install a sensor for detecting the arrival of the component near the component supply destination, that is, the target location. This has the effect that installation of a long signal line from the sensor can be avoided by such sensor installation, the simplification of the structure is promoted, and troubles such as disconnection can be avoided.

  According to a second aspect of the present invention, in the component supply control apparatus according to the first aspect, the timer means performs a time measuring operation by detecting that the injection of the conveying air is simultaneously performed in the plurality of supply passages. It is.

  Thus, it is detected that the injection of the conveying air is simultaneously performed in the plurality of supply passages, and the timer means performs the time measuring operation. For this reason, the extension time that is linked in a positive manner is added to the decrease in the flow rate of the injected air due to the air injection in the plurality of supply passages. Therefore, since the extension time corresponding to the decrease in the flow rate of the jet air is accurately added, the operation reliability as the component supply device is stabilized.

  According to a third aspect of the present invention, the extended time is a time set according to the length of the supply passage and the degree of decrease in the air flow rate, and is stored in advance in the extended time storage means as the time measured by the timer means. A component supply control device according to claim 1 or 2.

  Since the extension time is a time set according to the length of the supply passage and the degree of decrease in the air flow rate, the time required for the parts to reach the target location can be set accurately. Since this extension time is stored in advance in the extension time storage means as the time measurement time of the timer means, the optimum extension time is set according to the length of the supply passage and the degree of decrease in the air flow rate. It can be stored in the storage means. Therefore, it is possible to set the required air injection time by reliably adding the optimum extension time, and to set the minimum additional injection of air, which is effective in reducing the amount of air consumption.

  According to a fourth aspect of the present invention, when a distribution type supply device that supplies parts to any one of the plurality of supply passages is provided, and an outlet passage of the distribution type supply device matches any of the plurality of supply passages. Any one of claims 1 to 3, wherein the carrier air is jetted into the supply passage by a signal when the signal emitted and the signal issued by the jet of the component delivery jet air of the distribution type supply device are compatible. A component supply control device according to claim 1.

  The signal generated when the outlet passage of the distribution type supply device matches any of the plurality of supply passages and the signal generated by the injection of the component supply injection air of the distribution type supply device are ANDed to the supply passage. The carrier air is jetted. Therefore, in a system in which a distribution type supply device is used, the carrier air is injected into the supply passage using the operation of the distribution type supply device itself as a trigger. Is injected. Further, since the two signals are AND-processed and used, the transfer air is injected in a state in which the transition path of the component is established and the injection of the component delivery injection air is confirmed. Injection is performed in an optimal state.

  The invention according to claim 5 is an invention of a parts supply control method, wherein a part is supplied to a plurality of target locations by injecting conveying air into any one or a plurality of supply paths. The air injection time when parts are conveyed by injecting air into the plurality of supply passages is the air injection time when parts are conveyed by injecting air into one supply passage. On the other hand, it is characterized in that the extended time is set to the added time.

  As described above, since the extension time is added to the air injection time when the parts are conveyed by injecting air into one supply passage, the parts are conveyed by injecting air into the plurality of supply paths. The air injection time when going is extended. Therefore, even if a decrease in the air flow rate for each of the supply passages occurs due to the air injection in the plurality of supply passages, the air injection time is extended, so that the parts can be reliably reached at the target location. This means that if the air injection time is insufficient due to a decrease in the air flow rate when the supply passage is extremely long, the components may not reach the target location and may stop in the middle of the supply passage. Therefore, the occurrence of such a problem can be avoided.

  According to a sixth aspect of the present invention, the extended time is a time set according to the length of the supply passage and the degree of decrease in the air flow rate when parts are conveyed by injecting air into the plurality of supply passages. The component supply control method according to claim 5.

  Since the extension time is a time set according to the length of the supply passage and the degree of decrease in the air flow rate, the time required for the parts to reach the target location can be set accurately.

  A seventh aspect of the present invention is the component supply control method according to the fifth or sixth aspect, wherein the extended time is stored in advance in the extended time storage means as a time count of the timer means.

  Since the extended time is stored in advance in the extended time storage means as the time measured by the timer means, an optimal extended time corresponding to the length of the supply passage and the degree of decrease in the air flow rate is set and stored in the extended time storage means. It can be memorized. Therefore, it is possible to set the air injection time by surely adding the optimum extension time, and to set the minimum additional injection of air, which is effective for reducing the amount of air consumption.

  The invention according to claim 8 is the component supply control method according to claim 7, wherein the timer means performs a time measuring operation by detecting that the injection of the conveying air is simultaneously performed in the plurality of supply passages. It is.

  Thus, it is detected that the injection of the conveying air is simultaneously performed in the plurality of supply passages, and the timer means performs the time measuring operation. For this reason, the extension time that is linked in a positive manner is added to the decrease in the flow rate of the injected air due to the air injection in the plurality of supply passages. Therefore, since the additional time corresponding to the decrease in the flow rate of the blast air is accurately added, the operation reliability as a component supply device becomes stable, and additional air injection can be set to a minimum, reducing the amount of consumed air. It is effective for saving.

  The invention according to claim 9 is the air injection time in all the supply passages by starting the injection of the carrier air into the other supply passages when the carrier air is injected into one supply passage. The component supply control method according to claim 8, wherein the extension time is added to the item.

  When the conveyance air is injected into one supply passage and the movement of the parts is in the middle of the supply passage, when the injection of the conveyance air into the other supply passage is started, the preceding injection is performed. The air flow rate of the existing supply passages is reduced during the movement of the parts, and at the same time, the air flow rates of the other supply passages are lowered from the beginning. Even in the case of the preceding injection and the subsequent injection, since the extended time is added to the air injection time in all supply passages, the air injection time on the preceding supply passage side is also extended, and the parts are supplied. Problems such as stopping in the middle of the passage can be avoided, and highly reliable parts supply can be obtained.

  Next, the best mode for carrying out the component supply control device and control method of the present invention will be described.

  1 to 6 show a first embodiment.

  First, parts to be supplied will be described.

  As shown in FIG. 1B and FIG. 5, the component is an iron bolt 1. The bolt 1 is a shaft-shaped component including at least a hexagonal head 2 and a shaft portion 3 formed integrally with the head 2, and a portion of the head 2 is interposed between the head 2 and the shaft portion 3. The flange 4 which is a part is arranged. The lower surface of the head 2 corresponds to the lower surface of the flange 3. As for the dimensions of each part, the diameter between the opposite corners of the head 2 is 13 mm, the diameter of the shaft 3 is 8 mm, the diameter of the flange 3 is 17 mm, and the length of the bolt 1 is 32 mm.

  Next, the transmission control unit will be described.

  The delivery control unit 11 fulfills the function of delivering the bolts 1 that have been transported in a row, one by one, and is fixed to a stationary member 12 such as a machine frame. The bolt 1 delivered from the parts feeder 5 is transferred by the supply guide member 6 and sent to the delivery control unit 11. The supply guide member 6 is formed of a U-shaped member that is open upward, and includes a rail member 7 that is arranged in parallel, a sliding surface 8 on the upper surface thereof, and a coupling member that couples both rail members. 9, thereby forming a groove-like shaft portion passage space 10 through which the shaft portion 3 passes. With such a structure, the lower surface of the head 2 of the bolt 1 slides on the left and right sliding surfaces 8, and the shaft portion 3 passes through the shaft portion passage space 10. That is, it is transferred while being suspended by the head 2.

  As shown in FIG. 3, the supply guide member 6 is arranged in an inclined posture with the right side lowered, and is fed into the delivery control unit 11 by this inclination. In place of such an inclined arrangement, the supply guide member 6 can be attached to the vibration type linear feeder to make the arrangement posture horizontal.

  The internal structure of the delivery control unit 7 is shown in FIGS. FIG. 4 is a plan view of the entire apparatus, and is illustrated with a lid member described later removed in order to facilitate understanding of the internal structure. A flat upper surface 14 is formed on an elongated case body 13 having a substantially rectangular parallelepiped shape, and a plate-like lid member 15 is fixed thereto with a bolt (not shown) in close contact therewith. In addition, the code | symbol 16 shown in FIG. 4 is the screw hole of the said volt | bolt.

  The (B)-(B) cross section of FIG. 4 (A) is shown in FIG. 4 (B). This shows a cross-sectional shape of the inlet passage 17 and is formed by a groove-like shaft passage space 10 through which the shaft portion 3 of the bolt 1 passes and a head passage space 18 through which the head portion 2 passes. A sliding surface 8 on which the lower surface of the head 2 slides is formed in a lower left and right parallel state of the head passing space 18.

  The supply guide member 6 is disposed in a state of being connected to the inlet passage 17. As described above, the supply guide member 6 guides the bolt 1 fed from the parts feeder 5 to the inlet passage 17, and the sectional shape thereof is substantially the same as that of the inlet passage 17. FIG. ). The shaft passage space and the sliding surface of the supply guide member 6 are assigned the same reference numerals as those of the inlet passage 17.

  An outlet passage 19 is formed in the vertical direction of the case body 13 (direction perpendicular to the paper surface of FIG. 4A). The outlet passage 19 is configured with a through hole having a circular cross section provided in the case body 13. In order to transfer the bolt 1 that has entered the inlet passage 17 to the outlet passage 19, a transfer passage 20 is provided. The cross-sectional shape of the transfer passage 20 is the same as the cross-sectional shape of the inlet passage 17, and the passage space and the sliding surface of the shaft portion passage space and the head passage space of the bolt 1 have the shape shown in FIG. The same reference numerals are described in the figure.

  The entrance passage 17 and the transfer passage 20 are orthogonal to each other, and the intersecting portion is a temporary stop portion 22. That is, a temporary stop point 22 is arranged at a point where the transfer passage 20 is entered from the inlet passage 17.

  Guide grooves 23 are formed in the case body 13 in the transfer direction of the transfer passage 20, that is, in the left-right direction in FIG. A transfer member 24 is slidably inserted into the guide groove 23. An air cylinder 25 is coupled to the end of the case body 13, and a piston rod 26 is coupled to the end of the transfer member 24. When the air cylinder 25 operates and the piston rod 26 advances, the transfer member 24 enters the transfer passage 20 and the bolt 1 is transferred.

  A first magnet (permanent magnet) 27 is embedded in the case main body 13 corresponding to the extending direction of the supply guide member 6, that is, the abutting position of the inlet passage 17. The first magnet 27 is arranged to attract the bolt 1 from the inlet passage 17 to the temporary stop point 22. The direction line in which the S pole and the N pole of the first magnet 27 face each other, that is, the opposite direction of both poles, is matched with the diameter direction of the shaft portion 3 at the temporary stop portion 22. The direction line corresponds to the S / N direction axis of the first magnet 27. In order to cause the magnetic force of the first magnet 27 to act strongly on the bolt 1, the case body 13 is made of stainless steel, which is a nonmagnetic material.

  A second magnet (permanent magnet) 28 for suspending the bolt 1 that has entered the temporary stop portion 22 in a state of being displaced in the axial direction is embedded in the lid member 15. As shown in FIG. 5, the second magnet 28 has a function of pulling up the bolt 1 located at the temporary stop point 22 upward. The second magnet 28 is attached to the lid member 15 at a position corresponding to the temporary stop point 22. That is, the direction line in which the S pole and the N pole of the second magnet 28 face each other, that is, the direction in which both poles face each other, matches the axial direction of the shaft portion 3 at the temporary stop portion 22. The direction line corresponds to the axis of the second magnet 28 in the S / N direction. In order to cause the magnetic force of the second magnet 28 to act strongly on the bolt 1, the lid member 15 is made of stainless steel, which is a non-magnetic material. Further, since the second magnet 28 pulls up the bolt 1 in the axial direction, the magnetic force is set stronger than that of the first magnet 27. By setting such a magnetic strength relationship, the bolt 1 is pulled up in advance, and the shaft portion 3 is attracted to the temporary stop portion 22 in a subsequent state. Therefore, there is an effect that the bolt 1 is smoothly introduced into the temporary stop portion 22.

  Since the bolt 1 is displaced upward in this way, the vertical space height of the head passage space 18 of the inlet passage 17 and the temporary stop portion 22 connected thereto is set to the height of the head 2 as shown in FIG. The sheath is set to be larger than the total thickness of the flange 4. That is, a space for displacing the bolt 1 upward is formed at the temporary stop point 22 from the inlet passage 17. Such a space is also formed in a continuous state in the transfer passage 20.

  As shown in FIG. 4A, when the transfer member 24 is most retracted, the pressing surface 29 at the front end thereof looks into the temporary stop portion 22.

  In order to ensure the initial movement of the bolt 1 entering the outlet passage 19, as shown in FIG. 3, an air injection port 30 is provided in the lid member 15, and an air hose 31 communicating therewith is coupled to the lid member 15. Has been.

  Next, the polarity of the magnet will be described.

  As described above, the opposing direction of both poles of the first magnet 27 is set to the diameter direction of the shaft portion 3 at the temporary stop location 22, and the opposing direction of both poles of the second magnet 28 is the axis of the axial portion 3 at the temporary stop location 22. Set to direction. The polarity of the first magnet 27 on the side facing the shaft 3 and the polarity of the second magnet 28 on the side facing the head 2 are set to different polarities. Here, the polarity near the shaft portion 3 of the first magnet 27 is the S pole, and the polarity near the head 2 of the second magnet 28 is the N pole.

  By making the polarities different in this way, the magnetic lines of force are in a loop shape as indicated by reference numeral 32. Since the magnetic lines of force 32 are in a loop shape, the magnetic lines of force 32 pass abundantly through the bolt 1 located at the temporary stop point 22, so that the magnet attractive force acting on the bolt 1 is sufficiently ensured. Then, the shaft portion 3 is attracted to the inner wall of the shaft portion passing space 10, the upper surface of the head portion 2 is attracted to the lower surface of the lid member 15, the stop position of the bolt 1 at the temporary stop point 22 is accurately set, and the transfer member The transition to the transfer passage 20 by the advancement of 24 is reliably achieved.

  Next, the operation of the transmission control unit will be described.

  The bolt 1 that has slid the supply guide member 6 in a suspended state enters the inlet passage 17 as it is, is attracted by the first magnet 27 and the second magnet 28, and stops at a predetermined position of the temporary stop position 22. When the bolt 1 is approaching the temporary stop point 22, the head 2 of the bolt 1 is lifted by the second magnet 28, and the head 2 is brought into close contact with the lower surface of the lid member 15 and stopped as shown in FIG. 5. To do.

  When the transfer member 24 is advanced by the air cylinder 25 to the state where the head 2 of the bolt 1 is in close contact with the lower surface of the lid member 15, the pressing surface 29 pushes the flange 4 of the bolt 1 and the bolt 1 is covered with the lid member 15. It moves toward the transfer passage 20 while rubbing against the lower surface of the plate. When the head portion 2 of the bolt 1 moves away from the second magnet 28 and the shaft portion 3 moves away from the first magnet 27, the bolt 1 is displaced downward by its own weight, and the lower surface of the head portion 2 is the sliding surface 8 of the transfer passage 20. Slide on the top. Then, when the bolt 1 is further moved by the transfer member 24, the bolt 1 enters the outlet passage 19 and is subsequently sent out from the delivery control unit 11 with the jet air from the air jet port 30. The air injection from the air injection port 30 is “injection of component delivery injection air”. A delivery pipe 21 communicating with the outlet passage 19 is welded to the case body 13.

  Next, the plurality of supply passages will be described.

  The bolts 1 delivered from the delivery control unit 11 are distributed to a plurality of supply passages and supplied to a plurality of target locations. Here, there are two supply passages, and the first supply passage 34 and the second supply passage 35 alternately match the delivery pipe 21. A metal first relay pipe 37 constituting a part of the first supply passage 34 and a metal second relay constituting a part of the second supply passage 35 are provided on the support plate 36 which is in a state capable of advancing and retreating. The pipes 38 are welded in a parallel positional relationship. Connected to each of the relay pipes 37 and 38 are flexible synthetic resin supply hoses 39 and 40 that reach a target location described later.

  A support plate 36 is fixed to the air cylinder 41 so that the first relay pipe 37 and the second relay pipe 38 are alternately matched with the delivery pipe 21. Here, the air cylinder 41 is advanced and retracted, and the piston rod 42 is stationary. Therefore, the air cylinder 41 moves forward and backward on the slide plate 43, and the slide plate 43 is fixed to the stationary member 12 via the fixing member 44. The piston rod 42 is fixed to a support piece 45 provided upright at the end of the slide plate 43. When working air is supplied to or discharged from the air cylinder 41, the air cylinder 41 advances and retreats, and either the first or second relay pipe 37 or 38 matches the delivery pipe 21.

  As the structure for sliding the air cylinder 41, various structures can be adopted, but here, a slide piece type is used. A guide groove 46 is provided in the slide plate 43, and a slide piece 47 fixed to the air cylinder 41 is incorporated therein in a slidable state.

  The target locations here are the storage boxes 49 and 50 of the bolt 1. After a predetermined number of bolts 1 are stored in the storage boxes 49 and 50, the next use process is started. The predetermined number of bolts 1 here is five. The lengths of the supply hoses 39 and 40 from the first relay pipe 37 and the second relay pipe 38 to the storage boxes 49 and 50 are 20 m.

  Air for conveying the bolts 1 entering the supply passages 34 and 35 at high speed is injected into the supply passages 34 and 35. The air injection ports 51 and 52 are provided near the ends of the first relay pipe 37 and the second relay pipe 38, and supply hoses 53 and 54 communicating with the air injection holes 51 and 52 are provided. Since FIG. 3 is a cross section on the first supply passage 34 side, the reference numerals of the components such as the air injection port on the second supply passage 35 side are shown in parentheses.

  When the five bolts 1 are collected in the storage boxes 49, 50 fixed to the stationary member 12, the opening / closing lids 55, 56 are opened and dropped into the receiving boxes 57, 58, and the operator screws them into predetermined positions. I do. Air cylinders 59 and 60 for opening and closing the open / close lids 55 and 56 are arranged.

  If the bolt 1 that has been transported through the supply hoses 39 and 40 collides with the open / close lids 55 and 56 as it is, the open / close lids 55 and 56 are damaged. Therefore, the stopper units 61 and 62 are disposed immediately before the storage boxes 49 and 50. It is. The stopper units 61 and 62 are such that the stopper pieces 63 and 64 are advanced and retracted by the air cylinders 65 and 66, and the bolt 1 is received by the stopper members 67 and 68 at the illustrated positions. Accordingly, the bolt 1 transferred at high speed is temporarily stopped by the stopper members 67 and 68, and thereafter, when the stopper pieces 63 and 64 are moved, the bolt 1 passes through the through holes 69 and 70 and is stored in the accumulation boxes 49 and 50. Fall into.

  In this embodiment, the two first supply passages 34 and the second supply passage 35 are moved forward and backward with respect to one stationary delivery pipe 21 to form a “distribution type supply device”. It is also possible to configure the “distributed supply device” by moving the delivery pipe 21 forward and backward and stopping both the supply passages 34 and 35.

  In this embodiment, the two supply passages are the first supply passage 34 and the second supply passage 35. However, it is possible to increase the number to three or more.

  Next, air injection into the supply passage will be described.

  As shown in FIG. 2, when the first supply passage 34 matches the delivery pipe 21, the conveyance air is injected via the supply hose 53. The bolt 1 reaches the stopper unit 61 by this injection. In this case, since air is injected only into the first supply passage 34, the air flow rate is the maximum value as the air supply source, and the bolt 1 reaches the stopper unit 61 in the shortest time. This required time is 6 seconds. This 6 seconds corresponds to the air injection time.

  When the air cylinder 41 is operated after the elapse of 6 seconds and the second supply passage 35 matches the delivery pipe 21, the carrier air is injected through the supply hose 54 this time. The bolt 1 reaches the stopper unit 62 by this injection. In this case, since the air is injected only into the second supply passage 35, the air flow rate is the maximum value as the air supply source, and the bolt 1 reaches the stopper unit 62 in the shortest time. This required time is similarly 6 seconds.

  When air for conveyance is being injected into the first supply passage 34, the air cylinder 41 is operated so that the second supply passage 35 is aligned with the delivery pipe 21 and the conveyance air is injected from the air hose 54 to supply air. Air from the source is supplied to both the first supply passage 34 and the second supply passage 35. Accordingly, the flow rate of the jet air from both the air hoses 53 and 54 is reduced.

  Next, a control system for reducing the air flow rate will be described.

  FIG. 6 is a control system diagram systematically, in which a chain line indicates a signal line, and a solid line indicates an air supply path. The air supply source 72 is composed of an air supply pump or the like. An air pipe 73 from the air supply source 72 is branched into the air hoses 53, 54 and 31. Electromagnetic on-off valves 74, 75, and 76 are disposed on the air hoses 53, 54, and 31, respectively. A first sensor 77 that detects that the first supply passage 34 matches the outlet passage 19 is disposed in a state that reacts to the moving position of the air cylinder 41. A second sensor 78 that detects that the second supply passage 35 matches the outlet passage 19 is disposed in a state of reacting to the moving position of the air cylinder 41.

  A control device 79 for operating the entire component supply control device is provided. The control device 79 can be configured by a normal sequence circuit or a simple computer device. The control device 79 operates the electromagnetic on-off valves 74, 75 and 76 and detects the on-off of the conveying air in both the first supply passage 34 and the second supply passage 35 at the same time. An operating means 80, a timer means 81, and an extended time storage means 82 in which an extended time described later is stored are accommodated.

  When it is detected that the carrier air is simultaneously injected into both the first supply passage 34 and the second supply passage 35, the timer means 81 starts a time measuring operation using this as a trigger signal. The time measured is set according to the length of the supply hoses 39 and 40 that are supply passages and the degree of decrease in the air flow rate when air is injected into both supply passages 34 and 35. The time set in this way is an air injection time when air is injected into only one supply passage, that is, an extended time added to the 6 seconds. This addition time is 2 seconds.

  As described above, the extension time is set in advance according to the length of the supply passage and the degree of decrease in the air flow rate, and this time is stored in the extension time storage means 82. Accordingly, when signals from both the electromagnetic on / off valves 74 and 75 are supplied to the electromagnetic on / off valve operating means 80, both signals are subjected to AND processing to start the timer means 81, thereby setting the time extension signal set. Is communicated from the extended time storage means 82 to the electromagnetic on / off valves 74 and 75, and the opening time of the electromagnetic on / off valves 74 and 75 is extended by 2 seconds. In setting the extension time, the size and mass of the bolt 1 are also factors for time calculation as necessary. This extension time is calculated by including the length of the supply passage, the degree of decrease in the air flow rate, or the size and mass of the bolt 1 as necessary, depending on the experience of the operator and designer.

  As described above, the air injection time when parts are conveyed by injecting air into a plurality of supply passages The air injection time when parts are conveyed by injecting air into one supply passage The extension time is added to the time, and the timer means for setting the extension time is functioning. Alternatively, in the type of supplying the parts to a plurality of target locations by injecting the conveying air to any one or a plurality of the supply passages, the air is injected into the plurality of supply passages The air injection time when parts are being conveyed is set to the time obtained by adding the extension time to the air injection time when parts are conveyed by injecting air into one supply passage. is there.

  When the outlet passage 19 coincides with the first supply passage 34 and a coincidence signal is issued from the first sensor 77, the electromagnetic on-off valve 76 is opened and the component delivery jet air is injected from the air injection port 30. Since this injection time is for ensuring the initial movement of the bolt 1, it is instantaneously injected, for example, for 0.1 seconds. The signal of the first sensor 77 and the signal indicating that the electromagnetic on-off valve 76 has been opened are subjected to AND processing in the electromagnetic on-off valve operating means 80, and a valve opening signal of the electromagnetic on-off valve 74 is transmitted. On the other hand, when the outlet passage 19 matches the second supply passage 35, a signal indicating that the second sensor 78 and the electromagnetic opening / closing valve 76 are opened is subjected to AND processing, and a similar valve opening signal is sent to the electromagnetic opening / closing valve 75. Sent to.

  As described above, a distribution type supply device that supplies parts to any of the plurality of supply passages is provided, and is emitted when an outlet passage of the distribution type supply device matches any of the plurality of supply passages. The conveying air is injected into the supply passage by a signal when the signal and the signal generated by the injection of the component delivery injection air of the distribution type supply device are compatible.

  In the said Example, although the 1st magnet 27 and the 2nd magnet 28 are permanent magnets, these can also be changed into an electromagnet. In place of the various air cylinders described above, an electric motor that outputs and retreats can be employed.

  Furthermore, the illustration of the supply / discharge hose for the working air for each air cylinder in the above embodiment is omitted.

  The synthetic resin that constitutes the supply hose and the air hose is made of urethane resin or polypropylene resin.

  The operational effects of the first embodiment described above are as follows.

  As described above, in the embodiment of the component supply control device, the timer means for adding the extension time of 2 seconds to the air injection time of 6 seconds when air is injected into one supply passage and the components are conveyed. Since 81 is provided, the air injection time when the parts are conveyed by injecting air into the plurality of supply passages is extended to 8 seconds. Therefore, even if a decrease in the air flow rate for each supply passage occurs due to the air injection to the plurality of supply passages 34, 35, the air injection time 6 seconds is extended to 8 seconds. Parts reach. This is because if the supply passage is extremely long and the air injection time is insufficient due to a decrease in the air flow rate, the bolt 1 may not reach the target location and the bolt 1 may stop in the middle of the supply passage. By extending the time, 8 seconds are secured, and the occurrence of such a problem can be avoided.

  Further, since the air injection time of 2 seconds is extended by the timer means 81, it is not necessary to install a sensor for detecting the arrival of parts near the supply destination of the bolt 1, that is, in the vicinity of the accumulation boxes 49 and 50. This has the effect that installation of a long signal line from the sensor can be avoided by such sensor installation, the simplification of the structure is promoted, and troubles such as disconnection can be avoided.

  The timer unit 81 detects the simultaneous injection of the conveying air into the plurality of first and second supply passages 34 and 35 and performs a time measuring operation.

  In this way, the timer means 81 performs the time measuring operation by detecting that the conveying air is simultaneously injected into the plurality of supply passages 34 and 35. For this reason, the extension time linked in a positive manner is added to the decrease in the flow rate of the injected air due to the air injection being performed in the plurality of supply passages 34 and 35. Therefore, since the extension time corresponding to the decrease in the flow rate of the jet air is accurately added, the operation reliability as the component supply device is stabilized.

  The extension time of 2 seconds is a time set according to the length of the supply passages 34 and 35 and the degree of decrease in the air flow rate, and is stored in advance in the extension time storage means 82 as the time count of the timer means 81 in advance. .

  Since the extension time of 2 seconds is a time set according to the length of the supply passages 34 and 35 and the degree of decrease in the air flow rate, the time required for the bolt 1 to reach the storage boxes 49 and 50 is reached. It can be set accurately. Since this extended time is stored in advance in the extended time storage means 82 as the time measured by the timer means 81, an optimum extended time corresponding to the length of the supply passages 34 and 35 and the degree of decrease in the air flow rate is set. Then, it can be stored in the extended time storage means 82. Therefore, it is possible to set the required air injection time by reliably adding the optimum extension time, and to set the minimum additional injection of air, which is effective in reducing the amount of air consumption.

  A distribution type supply device for supplying the bolt 1 to any one of the plurality of supply passages 34, 35 is provided, and when the outlet passage 19 of the distribution type supply device matches any one of the plurality of supply passages 34, 35 The conveying air is jetted into the supply passages 34 and 35 based on a signal when the signal issued and the signal generated by jetting the component delivery jet air from the air jet port 30 are compatible.

  Issued by a signal generated when the outlet passage 19 of the distribution type supply device matches one of the plurality of supply passages 34 and 35, and by injection of component delivery injection air from the air injection port 30 of the distribution type supply device. The signal is subjected to an AND process, and the conveying air is injected into the supply passages 34 and 35. Accordingly, in a system in which the distribution type supply device is used, the air for conveyance is injected into the supply passages 34 and 35 by using the operation of the distribution type supply device itself as a trigger. Injecting the air for proper conveyance. Further, since the two signals are used after being subjected to AND processing, the transfer air is injected in a state in which the transition passage of the bolt 1 is established and the injection of the component delivery injection air is confirmed, and the transfer to the bolt 1 is performed. The air injection is performed in an optimum state.

  As described above, in the embodiment of the component supply control method, the extension time of 2 seconds is added to the air injection time of 6 seconds when air is injected into one supply passage 34 or 35 to carry the components. Therefore, the air injection time when parts are conveyed by injecting air into the plurality of supply passages 34 and 35 is extended to 8 seconds. Therefore, even if a decrease in the air flow rate for each of the supply passages 34 and 35 occurs due to the air injection to the plurality of supply passages 34 and 35, the air injection time is extended, so that the accumulation boxes 49 and 50 can be reliably connected. Parts arrive at the end. This is because if the supply passages 34 and 35 are extremely long and the air injection time is insufficient due to a decrease in the air flow rate, the bolt 1 may not reach the target location and the bolt 1 may stop in the middle of the supply passages 34 and 35. However, the occurrence of such a problem can be avoided by extending the air injection time.

  The extension time of 2 seconds depends on at least two factors of the length of the supply passages 34 and 35 and the degree of decrease in the air flow rate when parts are conveyed by injecting air into the plurality of supply passages 34 and 35. It is a set time.

  Since the extended time is a time set according to the length of the supply passages 34 and 35 and the degree of decrease in the air flow rate, the time required for the parts to reach the target location can be accurately set, Additional injection can also be set to a minimum, which is effective in reducing the amount of air consumed.

  The extended time of 2 seconds is stored in advance in the extended time storage means 82 as the time measured by the timer means 81.

  Since the extended time is stored in advance in the extended time storage means 82 as the time measured by the timer means 81, an optimal extended time corresponding to the length of the supply passages 34 and 35 and the degree of decrease in the air flow rate is set. It can be stored in the extended time storage means 82. Therefore, it is possible to set the air injection time by surely adding the optimum extension time, and to set the minimum additional injection of air, which is effective for reducing the amount of air consumption.

  The timer means 81 performs a time measuring operation by detecting that the conveying air is simultaneously injected into the plurality of supply passages 34 and 35.

  In this way, the timer means 81 performs the time measuring operation by detecting that the conveying air is simultaneously injected into the plurality of supply passages 34 and 35. For this reason, the extension time linked in a positive manner is added to the decrease in the flow rate of the injected air due to the air injection being performed in the plurality of supply passages 34 and 35. Therefore, since the addition of the extension time of 2 seconds that accurately corresponds to the decrease in the flow rate of the blast air is performed, the operation reliability as the component supply device becomes stable.

  When the supply air is injected into one supply passage 34 or 35, the injection of the transfer air into the other supply passage 35 or 34 is started, whereby the air injection in all the supply passages 34 and 35 is performed. An additional time of 2 seconds is added to the time.

  The supply air is injected into one of the supply passages 34 or 35, and the injection of the transfer air into the other supply passages 35 or 34 is started at the time when the component movement is in the middle of the supply passages 34 and 35. Then, the air flow rate of the supply passage that performs the pre-injection decreases during the movement of the parts, and at the same time, the air flow rates of the other supply passages also decrease from the beginning. Even in the case of such preceding injection and subsequent injection, since the extended time is added to the air injection time in all the supply passages 34, 35, the air injection time on the preceding supply passage side is also extended, The trouble that the bolt 1 stops in the middle of the supply passages 34 and 35 can be avoided, and highly reliable component supply can be obtained.

  As described above, according to the present invention, the component supply control device and control capable of automatically extending the air injection time with respect to the reduction of the air flow rate when air is injected into the plurality of supply passages. Since it is a method, it can be used in a wide range of industrial fields such as a component supply process to a screw fastening device or the like.

It is a top view which shows the whole apparatus. It is a side view which shows the whole apparatus. It is (3)-(3) sectional drawing of FIG. It is a top view of a component supply unit. It is (5)-(5) sectional drawing of FIG. It is a control system figure of the whole apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bolt, components 2 Head 3 Shaft part 6 Supply guide member 10 Shaft part passage space 13 Case main body 15 Cover member 17 Inlet passage 18 Head passage space 19 Outlet passage 20 Transfer passage 22 Temporary stop location 27 First magnet 28 Second Magnet 30 Air injection port 32 Line of magnetic force 34 First supply passage 35 Second supply passage 37 First relay tube 38 Second relay tube 39 Supply hose 40 Supply hose 49 Storage box 50 Storage box 51 Air injection port 52 Air injection port 72 Air supply Source 74 Electromagnetic on-off valve 75 Electromagnetic on-off valve 76 Electromagnetic on-off valve 77 First sensor 78 Second sensor 79 Controller 80 Electromagnetic on-off valve operating means 81 Timer means 82 Extended time storage means

Claims (9)

  Each of the plurality of supply passages is provided with an air injection port for injecting conveying air, and air is injected into any one of the plurality of supply passages or the plurality of supply passages to supply parts to a plurality of target locations. In the type, the air injection time when parts are conveyed by injecting air into a plurality of supply passages is the air injection time when parts are conveyed by injecting air into one supply passage A component supply control device characterized in that an extension time is added to the time, and timer means for setting the extension time is provided.   2. The component supply control device according to claim 1, wherein the timer means detects the simultaneous injection of conveying air into a plurality of supply passages and performs a time measuring operation.   3. The extended time is a time set in accordance with a length of a supply passage and a reduction degree of the air flow rate, and is stored in advance time storage means in advance as a time count of a timer means. Parts supply control device.   A distribution type supply device that supplies parts to any one of the plurality of supply passages is provided, and a signal that is generated when an outlet passage of the distribution type supply device matches any of the plurality of supply passages, and a distributed supply The component supply control device according to any one of claims 1 to 3, wherein the carrier air is injected into the supply passage by a signal when the signals generated by the injection of the component delivery injection air of the device are compatible. .   In a type of supplying parts to a plurality of target locations by injecting conveying air to any one or a plurality of supply paths, and conveying the parts by injecting air to the plurality of supply paths The air injection time at the time of performing the air injection is set to a time obtained by adding the extension time to the air injection time at the time of carrying the parts by injecting air into one supply passage A component supply control method.   6. The component supply control according to claim 5, wherein the extension time is a time set according to a length of the supply passage and a degree of decrease in the air flow rate when air is injected into the plurality of supply passages to carry the components. Method.   7. The component supply control method according to claim 5, wherein the extended time is stored in advance in the extended time storage means as a time measured by the timer means.   8. The component supply control method according to claim 7, wherein the timer means detects the simultaneous injection of the conveying air into the plurality of supply passages and performs a time measuring operation.   When the carrier air is injected into one supply passage, the extension time is added to the air injection time in all the supply passages by starting the injection of the carrier air into the other supply passage. The component supply control method according to claim 8.

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