JP5858338B2 - Perforated parts feeder - Google Patents

Description

  The present invention relates to a supply device for perforated parts such as projection nuts and washers.

  In Japanese Patent Application Laid-Open No. 2010-202406, a temporary fixing chamber for a perforated part is formed at a location where a part supply pipe and a guide pipe of a supply rod intersect, and the inner wall of the temporary stop chamber is formed on the extension direction side of the part supply pipe. The perforated part positioned in the temporary fixing chamber by the stopper surface of the guide member is disposed and supplied to the guide pin of the electrode that is the target position by the advancement of the supply rod. Have been described.

JP 2010-202406 A

  The supply device described in Patent Document 1 will be described.

  FIG. 4 shows the supply device described in Patent Document 1. The perforated component shown here is an iron projection nut 1 shown in FIG.

  Next, the projection nut will be described.

  The projection nut 1 shown in FIG. 1E will be described. The main body 2 is square when viewed from directly above, and a screw hole 3 is provided at the center thereof. The welding projections 4 are formed at the four corners on one side of the main body 2. As is apparent from the figure, the welding protrusion 4 protrudes in the axial direction of the screw hole 3 and also protrudes from the main body 2 in the diameter direction of the screw hole 3. Therefore, it protrudes from the lateral side surface 2A of the main body 2 and this protruding dimension is indicated by the symbol L. In other words, as is apparent from the movement state of the nut 1 in FIG. 4A, a protrusion protruding from the main body 2 in the conveying direction of the nut 1 is formed.

  As for the dimensions of each part of the nut 1, the vertical and horizontal dimensions of the main body 2 are 13 mm, the height dimension in the center line direction of the screw hole 3 is 4.5 mm, the inner diameter of the screw hole 3 is 6 mm, and the protruding dimension L is 0.5 mm. . In the following description, the projection nut may be simply expressed as a nut.

  Next, the projection nut supply device will be described.

  The projection nut supply device 5 shown in FIG. 4A will be described. This is a type in which the nut 1 temporarily locked at a predetermined position is skewed with a supply rod and supplied to a target location. The nut 1 delivered from a parts feeder (not shown) reaches the temporary fixing chamber 7 by a parts supply pipe 6 having a rectangular cross section. A guide pipe 8 having a circular cross section is welded to the end of the component supply pipe 6, and the component supply pipe 6 and the guide pipe 8 are in an orthogonal positional relationship. The temporary fixing chamber 7 is formed at a location where the component supply pipe 6 and the guide pipe 8 intersect. The guide tube 8 has a circular cross section.

  A guide member 9 that forms a part of the inner wall of the temporary fixing chamber 7 is disposed on the extension direction side of the component supply pipe 6. That is, the guide member 9 that receives the nut 1 is disposed at the end portion of the nut 1 in the conveying direction. And the above-mentioned protrusion dimension L protrudes toward this conveyance direction. A space formed by the component supply pipe 6, the guide pipe 8, and the guide member 9 in this manner is a temporary fixing chamber 7. The temporary stop chamber 7 is provided with an outlet opening 10 through which the nut 1 is delivered.

  A supply rod 12 is accommodated in the guide tube 8 in a state where the supply rod 12 can advance and retract. The supply rod 12 has a circular cross section, and includes a large-diameter sliding portion 13 that slides in the guide tube 8 and a guide rod 14 that has a smaller diameter and penetrates the screw hole 3 of the nut 1. . An extrusion surface 18 that is in close contact with the upper surface of the nut 1 is formed at the boundary between the sliding portion 13 and the guide rod 14. An air cylinder 11 is attached to the guide tube 8, and its piston rod is coupled to the supply rod 12.

  Next, the guide member will be described.

  The guide member 9 constitutes a part of the inner wall surface of the temporary fixing chamber 7, and is fixed by screwing a fixing bolt 16 into a pressing metal 15 welded to the guide tube 8. This fixing is performed by pressing the guide member 9 against a flat receiving surface 17 formed on the outer periphery of the end portion of the guide tube 8.

  The guide member 9 has a three-layer structure, a circular through hole is formed in a main member 19 formed of a thick steel plate, a circular magnet (permanent magnet) 20 is fitted therein, and a protective plate is provided on the temporary fixing chamber 7 side. 21 is affixed and the back plate 22 is affixed to the opposite side. That is, the thickness of the main member 19 and the thickness of the magnet 20 are set to be the same, and the protection plate 21 and the back plate 22 are attached to both sides thereof by partial welding. The nut 1 that entered the temporary holding chamber 7 vigorously was received by the protective plate 21 by the attractive force of the magnet 20 acting in the direction indicated by the arrow 26, and the screw hole 3 and the guide rod 14 became substantially coaxial. Stop in state.

  On the other hand, the place where the nut 1 is supplied is an electrode of electric resistance welding. A steel plate part 24 is placed on the fixed electrode 23, and the nut 1 is supplied to a guide pin 25 protruding through the steel plate part 24 as shown by a two-dot chain line. When the supply rod 12 advances, the guide rod 14 passes through the screw hole 3, the nut 1 is pushed out by the pushing surface 18, and the tip of the guide rod 14 stops immediately near the guide pin 25. The guide rod 14 is slid to match the guide pin 25. Thereafter, the supply rod 12 is retracted, the movable electrode 39 is advanced, and the nut 1 is welded to the steel plate part 24.

  While the supply rod 12 is advanced, the second nut 1 is prohibited from moving by the sliding portion 13. However, when the supply rod 12 returns to the position shown in FIG. The nut 1 is attracted by the magnet 20 and vigorously collides with the protection plate 21, and positioning is performed to prepare for the next advancement of the supply rod 12.

  Next, the abnormal deformation of the guide member will be described.

  Due to the attractive force of the magnet 20 or the downward inclination of the component supply pipe 6, the nut 1 enters the temporary fixing chamber 7 at a high speed and is received by the stopper surface 27 of the guide member 9, that is, the surface of the protection plate 21. At this time, as shown in FIGS. 4C and 4D, the protruding portion L of the welding protrusion 4 repeatedly abuts against the stopper surface 27, thereby forming a recess 28 at a location corresponding to the welding protrusion 4. . Such a depression 28 is formed by local wear caused by rubbing the corners of the welding projection 4 or an indentation phenomenon caused by plastic deformation of the protective plate 21.

  When the nut 1 is pushed out while the welding projection 4 receives the attractive force of the magnet 20 and remains in the recess 28 due to the advancement of the supply rod 12, the welding projection 4 scratches the stopper surface 27. Sent out. For this reason, a rubbing groove 29 continuous to the recess 28 is formed in the stopper surface 27.

  FIG. 4B shows a case where the magnet 20 is not provided. The nut 1 that has entered the temporary fixing chamber 7 stops on the opening / closing plate 30 for preventing the fall and is temporarily locked. The opening / closing plate 30 opens and closes around a shaft 31 installed on the component supply pipe 6, and a closed position is set by a coil spring assembled to the shaft 31 (not shown). Reference numeral 32 denotes a U-shaped notch formed in the opening / closing plate 30 through which the guide rod 14 passes. The guide member 9 is formed of a single thick steel plate and is welded to the guide tube 8. The structure shown in FIG. 4B is a state in which the guide member 9 side is lowered, so that the nut 1 collides with the stopper surface 27 at a high speed.

  Even in the type using the opening / closing plate 30 without a magnet as described above, the right side is lowered, so that the same recess 28 and rubbing groove 29 as those shown in FIGS. 4C and 4D are formed. It is formed on the stopper surface 27 of the guide member 9.

  Furthermore, FIG. 5 is a case of a nut with a flange. The main body 2 of the nut 1 has a hexagonal shape, a circular flange 33 is formed on one side thereof, and three welding projections 4 are provided on the lower surface thereof at intervals of 120 degrees. The stopper surface 27 of the guide member 9 has a stepped structure for receiving the main body 2 and the flange 33, and the nut stop receives the outer peripheral surface of the flange 33. The stopper surface 27 is also an arc surface that matches the outer peripheral surface of the flange 33. In order to introduce the nut 1 into the temporary fixing chamber 7, a magnet 20 is embedded in the guide member 9.

  In order to hold the nut 1 in the temporary fixing chamber 7, an advancing / retracting gate plate 34 is arranged. The gate plate 34 advances and retreats in the same direction as the direction in which the nut 1 enters, and opens and closes the outlet opening 10 of the temporary fixing chamber 7. The gate plate 34 is advanced and retracted by an air cylinder 35 fixed to the side surface of the component supply pipe 6. A piston rod 36 of the air cylinder 35 is coupled to the gate plate 34. The nut 1 introduced into the temporary fixing chamber 7 is attracted and held to the guide member 9 by the magnet 20. If the nut 1 is likely to fall for some reason, the nut 1 is placed on the gate plate 34. The nut is prevented from falling. Reference numeral 37 denotes a U-shaped notch formed in the gate plate 34, through which the guide rod 14 passes.

  When the nut 1 enters, the outer peripheral portion of the flange 33 abuts against the stopper surface 27. By repeating this, as shown in FIG. 5C, an arc-shaped groove-shaped recess 38 is formed. .

  Next, the problem will be described.

  As described above, when the welding projection 4 is pushed into the recess 28 shown in FIGS. 4C and 4D and is pushed out by the supply rod 12, the welding projection 4 is forcibly escaped from the recess 28. Even after the welding, the welding protrusion 4 is rubbed against the stopper surface 27, and a rubbing groove 29 is formed. Therefore, the sliding resistance with respect to the rubbing groove 29 continues. Although the length in the extrusion direction when exiting from the recess 28 is extremely short, the length in the extrusion direction of the rubbing groove 29 is much longer than that in the case of the recess 28. When the nut 1 has the above dimensions, the dimension S1 of the recess 28 shown in FIGS. 4C and 4D is 2.5 to 3.5 mm, and the length of the rubbing groove 29 is 6 to 8 mm.

  If the large sliding resistance continues over the long section of the rubbing groove 29 in this way, the load on the air cylinder 11 becomes large and hinders smooth nut delivery.

  The advancement speed of the supply rod 12 by the air cylinder 11 hardly decreases when the welding protrusion 4 escapes from the recess 28. This is because the section S1 is extremely short, the load increase of the air cylinder 11 is instantaneous, and the piston rod of the air cylinder 11 and the inertia of the piston also act, so the advance speed of the supply rod 12 does not decrease.

  However, if the sliding resistance becomes high over a long section such as the rubbing groove 29, since a favorable action due to an instantaneous load increase or inertial mass cannot be obtained as described above, the load increase section for the air cylinder 11 becomes long and supplied. The advance speed of the rod 12 decreases. When the load increase section becomes long, the working air supplied to the air cylinder 11 is compressed, so that the advance speed is reduced. Then, when the welding protrusion 4 escapes from the rubbing groove 29 after such air compression, the advancement speed of the supply rod 12 rapidly increases, so that only the nut 1 moves first and comes out of the guide rod 14. There is a fear. Such a phenomenon occurs not only in the air cylinder but also in the forward / backward output type electric motor.

  Alternatively, even when the arc-shaped groove-shaped depression 38 as shown in FIG. 5 is formed, the same phenomenon as the depression 29 and the rubbing groove 29 occurs due to the continuation of the attractive force of the magnet 20.

  The present invention was invented in order to solve the above-mentioned problems, and when the perforated part is pushed out by the supply rod, the perforated part does not have a sliding resistance with respect to the guide member or is substantially a problem. An object of the present invention is to provide a supply device for perforated parts that can be reduced to a level that does not occur.

  According to the first aspect of the present invention, a temporary fixing chamber of a perforated part is formed at a location where the part supply pipe and the guide pipe of the supply rod intersect, and the inner wall of the temporary fixation chamber is formed on the extension direction side of the part supply pipe. A guide member that forms a part of the perforated part is disposed, and after the perforated part positioned in the temporary fixing chamber by the stopper surface of the guide member starts moving by the advancement of the supply rod, the perforated part has a suction force. An apparatus for supplying perforated parts, wherein an acting auxiliary magnet is arranged, and an attractive force of the auxiliary magnet to the perforated part acts in a direction to separate the perforated part from the stopper surface.

  After the perforated part, which is positioned in the temporary fixing chamber by the stopper surface of the guide member, starts moving by the advancement of the supply rod, an auxiliary magnet is arranged to apply an attractive force to the perforated part. The suction force against the part acts in the direction of pulling the perforated part away from the stopper surface. That is, after the movement of the perforated part is started, the auxiliary magnet attracts the perforated part in a direction to separate it from the stopper surface.

  As a result, after the perforated part starts to move, the frictional resistance of the perforated part against the stopper surface, that is, the sliding resistance disappears or is reduced to a level at which there is no actual harm. Thus, the advancing speed of the supply rod does not decrease, and smooth component supply is realized.

  In addition, the perforated part is attracted to the guide member by a suction means such as a magnet and is positioned at a predetermined position in the temporary fixing chamber. Since it acts on the perforated parts, the positioning function in the temporary stop chamber is not hindered.

  According to a second aspect of the present invention, there is provided the perforated component supply device according to the first aspect, wherein the perforated component is a projection nut provided with a welding projection or a flange.

  Even if the welding protrusion or flange enters the recess in the stopper surface, when the welding protrusion or flange escapes from the recess, the advancement speed of the supply rod is almost reduced when the welding protrusion escapes from the recess. There is nothing to do. This is because the depression section seen in the advancing direction of the supply rod is extremely short, and the load increase with respect to the advancing of the supply rod is instantaneous, and the inertial force of each member of the drive means that advances the supply rod and the supply rod acts. The speed of advancement of the supply rod does not decrease. Therefore, after the welding protrusion or flange has escaped from the recess, the attractive force of the auxiliary magnet acts, so that smooth component supply is realized as described above.

  The present invention is an apparatus invention as described above, but as can be clearly understood from the embodiments described below, the present invention can exist as a method invention specifying an operation process.

It is sectional drawing of each part which shows the Example of this invention. It is sectional drawing of another Example. It is sectional drawing of another Example. It is sectional drawing of each part of a prior art example. It is sectional drawing of each part of a prior art example.

  Next, a mode for carrying out the perforated component supply device of the present invention will be described.

  FIG. 1 shows a first embodiment of the present invention.

  First, the perforated part will be described.

  There are various types of perforated parts such as projection nuts, washers and distance pieces. The perforated part delivered in the first embodiment is an iron projection nut shown in FIG. The main body 2 is square when viewed from directly above, and a screw hole 3 is provided at the center thereof. The welding projections 4 are formed at the four corners on one side of the main body 2. As is apparent from the figure, the welding protrusion 4 protrudes in the axial direction of the screw hole 3 and also protrudes from the main body 2 in the diameter direction of the screw hole 3. Therefore, it protrudes from the lateral side surface 2A of the main body 2 and this protruding dimension is indicated by the symbol L. In other words, a protrusion protruding from the main body 2 in the conveying direction of the nut 1 is formed.

  As for the dimensions of each part of the nut 1, the vertical and horizontal dimensions of the main body 2 are 13 mm, the height dimension in the center line direction of the screw hole 3 is 4.5 mm, the inner diameter of the screw hole 3 is 6 mm, and the protruding dimension L is 0.5 mm. . In the following description, the projection nut may be simply expressed as a nut.

  Next, the supply device will be described.

  The structure as a supply apparatus is the same as what was demonstrated according to FIG. 4 (A). The members having the same function are denoted by the same reference numerals.

  The projection nut supply device 5 shown in FIG. 1A will be described. This is a type in which the nut 1 temporarily locked at a predetermined position is skewed with a supply rod and supplied to a target location. The nut 1 delivered from a parts feeder (not shown) reaches the temporary fixing chamber 7 by a parts supply pipe 6 having a rectangular cross section. A guide pipe 8 having a circular cross section is welded to the end of the component supply pipe 6, and the component supply pipe 6 and the guide pipe 8 are in an orthogonal positional relationship. A temporary fixing chamber 7 is formed at a location where the component supply pipe 6 and the guide pipe 8 intersect. The guide tube 8 has a circular cross section.

  A guide member 9 that forms a part of the inner wall of the temporary fixing chamber 7 is disposed on the extension direction side of the component supply pipe 6. That is, the guide member 9 that receives the nut 1 is disposed at the end portion of the nut 1 in the conveying direction. And the above-mentioned protrusion dimension L protrudes toward this conveyance direction. A space formed by the component supply pipe 6, the guide pipe 8, and the guide member 9 in this manner is a temporary fixing chamber 7. The temporary stop chamber 7 is provided with an outlet opening 10 through which the nut 1 is delivered.

  A supply rod 12 is accommodated in the guide tube 8 in a state where the supply rod 12 can advance and retract. The supply rod 12 has a circular cross section, and includes a large-diameter sliding portion 13 that slides in the guide tube 8 and a guide rod 14 that has a smaller diameter and penetrates the screw hole 3 of the nut 1. . An extrusion surface 18 that is in close contact with the upper surface of the nut 1 is formed at the boundary between the sliding portion 13 and the guide rod 14. An air cylinder (not shown, but the same as the above-described air cylinder 11) is attached to the guide tube 8, and its piston rod is coupled to the supply rod 12.

  Next, the guide member will be described.

  The guide member 9 constitutes a part of the inner wall surface of the temporary fixing chamber 7, and is fixed by screwing a fixing bolt 16 into a pressing metal 15 welded to the guide tube 8. This fixing is performed by pressing the guide member 9 against a flat receiving surface 17 formed on the outer periphery of the end portion of the guide tube 8.

  The guide member 9 has a three-layer structure, a circular through hole is formed in a main member 19 formed of a thick steel plate, a circular magnet (permanent magnet) 20 is fitted therein, and a protective plate is provided on the temporary fixing chamber 7 side. 21 is affixed and the back plate 22 is affixed to the opposite side. That is, the thickness of the main member 19 and the thickness of the magnet 20 are set to be the same, and the protection plate 21 and the back plate 22 are attached to both sides thereof by partial welding. The nut 1 that entered the temporary holding chamber 7 vigorously was received by the protective plate 21 by the attractive force of the magnet 20 acting in the direction indicated by the arrow 26, and the screw hole 3 and the guide rod 14 became substantially coaxial. Stop in state. In order to apply the attractive force of the magnet 20 to the nut 1 as strongly as possible, the main member 19, the protective plate 21, the back plate 22, and the like are preferably manufactured using stainless steel which is a nonmagnetic material.

  On the other hand, the location where the nut 1 is supplied is an electrode of electric resistance welding (not shown, see FIG. 4A). As shown in FIG. 4 (A), a steel plate part 24 is placed on the fixed electrode 23, and a nut 1 is supplied to a guide pin 25 protruding through the steel plate part 24 as shown by a two-dot chain line. Is done. When the supply rod 12 advances, the guide rod 14 passes through the screw hole 3, the nut 1 is pushed out by the pushing surface 18, and the tip of the guide rod 14 stops immediately near the guide pin 25. The guide rod 14 is slid to match the guide pin 25. Thereafter, the supply rod 12 is retracted, the movable electrode 39 is advanced, and the nut 1 is welded to the steel plate part 24.

  While the supply rod 12 is advanced, the second nut 1 is prohibited from moving by the sliding portion 13, but when the supply rod 12 returns to the position shown in FIG. The nut 1 is attracted by the magnet 20 and vigorously collides with the protection plate 21, and positioning is performed to prepare for the next advancement of the supply rod 12.

  Next, the auxiliary magnet will be described.

  The auxiliary magnet 41 composed of a permanent magnet has an attractive force applied to the nut 1 after the nut 1 positioned in the temporary fixing chamber 7 by the stopper surface 27 of the guide member 9 starts moving by the advancement of the supply rod 12. The suction direction of the suction force is a direction in which the nut 1 is pulled away from the stopper surface 27.

  Various arrangements of the auxiliary magnet 41 can be adopted. Here, the auxiliary magnet 41 is of a type attached to the component supply pipe 6. That is, a washer member 42 having a screw hole is welded to the lower surface of the component supply pipe 6, and a substantially L-shaped support member 43 is fixed thereto. This fixing is performed by screwing the fixing bolt 44 into the screw hole of the washer member 42. The support member 43 is configured by a fixing portion 45 through which the fixing bolt 44 passes and a housing portion 46 in which the auxiliary magnet 41 is accommodated, and a protective plate 47 that protects the auxiliary magnet 41 is welded to the housing portion 46. A concave portion is formed in the accommodating portion 46, and the auxiliary magnet 41 is fitted therein. The protective plate 47 has a flat surface, and the position of the protective plate 47 does not enter a required space when the nut 1 is delivered. The nut 1 slides on the surface of the protective plate 47 or the surface of the protective plate 47. Is set so that a slight gap exists between them. Note that the BB cross section of FIG. 1A is shown in FIG.

  The nut 1 temporarily locked at a predetermined position in the temporary fixing chamber 7 receives the attractive force of the auxiliary magnet 41 after the movement by the supply rod 12 is started. For example, the position at which the suction force starts to be received is optimally immediately after the welding projection 4 has escaped from the recess 28 formed by the welding projection 4 shown in FIG. Therefore, the location where the auxiliary magnet 41 is disposed is as close as possible to the magnet 20 when viewed in the stroke direction of the supply rod 12, or the attractive force of the auxiliary magnet 41 is set larger than that of the magnet 20. Alternatively, the polarity of the magnet 20 is such that the S pole and the N pole are arranged on the left and right sides of the magnet 20 in order to introduce the nut 1, but the polarity of the auxiliary magnet 41 is the S pole and the N pole above and below the auxiliary magnet 41. By arranging the nut 1, the attractive force on the auxiliary magnet 41 side can be applied to the nut 1 immediately after the movement of the nut 1 is started. The above-mentioned up-and-down direction of the auxiliary magnet 41 means a direction in which the up-and-down direction is along the forward / backward direction of the supply rod 12.

  In order to make the arrangement location of the auxiliary magnet 41 closer to the magnet 20 when viewed in the stroke direction of the supply rod 12, the shape of the accommodating portion 46 is changed as shown in FIG. It is also possible to bring it close to the 7 side.

  It should be noted that an electric motor that performs forward / backward output can be employed instead of the various air cylinders. It is also possible to replace the various permanent magnets with electromagnets.

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

  When the nut 1 enters the temporary fixing chamber 7, it is received by the stopper surface 27. At this time, the welding projection 4 collides with the stopper surface 27 to form a recess as indicated by reference numeral 28 in FIG. The nut 1 is attracted by the magnet 20 with the welding projection 4 in the recess. When the nut 1 is pushed out by the supply rod 12 in this state, the short stroke section in which the welding projection 4 escapes from the recess is the inertial force of the movable part of the drive means (air cylinder) of the supply rod 12 and the supply rod 12. The nut is fed without causing a decrease in the speed of the supply rod 12.

  Thus, when the welding projection 4 escapes from the recess, the attractive force of the auxiliary magnet 41 acts on the nut 1 immediately after that. The direction of the suction force is a direction in which the nut 1 is pulled away from the stopper surface 27. For this reason, after the welding projection 4 escapes from the recess, the sliding resistance of the welding projection 4 with respect to the stopper surface 27, that is, the frictional resistance disappears or decreases to an extent that does not cause a problem. Accordingly, the supply rod 12 after the welding protrusion 4 has come out of the recess can be smoothly fed out without reducing the advancement speed.

  At the same time, since the sliding resistance is as described above, the stopper surface 27 is not formed with a groove (scratched groove indicated by reference numeral 29 in FIG. 4) due to wear. Further, even if the groove is formed, it is not problematic. Therefore, the durability of the stopper surface 27 is improved, and the replacement period of the guide member 9 is significantly prolonged. When the depth of the dent reaches the protruding length L of the welding protrusion 4, the stopper surface 27 is not further deformed, so that the above-described lengthening is achieved.

  In other words, as described above, if the sliding resistance is increased over a long section such as the rubbing groove 29, a preferable action due to an instantaneous load increase or the inertial mass of the driving means cannot be obtained as described above. The load increasing section becomes longer and the advancement speed of the supply rod 12 decreases. When the load increase section becomes long, the working air supplied to the air cylinder 11 is compressed, so that the advance speed is reduced. Then, when the welding protrusion 4 escapes from the rubbing groove 29 after such air compression, the advancement speed of the supply rod 12 rapidly increases, so that only the nut 1 moves first and comes out of the guide rod 14. There is a fear. These problems are solved as described above.

  5 can be solved by the auxiliary magnet 41 as described above. Therefore, the present invention can also be applied to the supply device 5 of the type as shown in FIG. In this case, since the gate plate 34 opens and closes, the arrangement of the gate plate 34 can be easily achieved by arranging the auxiliary magnet 41 on the side facing the guide member 9 and on the supply rod advance side.

  Further, the nut 1 is attracted to the stopper surface 27 of the guide member 9 by a suction means such as a magnet and is positioned at a predetermined position in the temporary fixing chamber 7. Since this suction force acts on the nut 1, the positioning function in the temporary stop chamber 7 is not hindered.

  The perforated part is a projection nut 1 provided with a welding projection 4 or a flange 33.

  Even if the welding projection 4 or the flange 33 enters the recess 28 of the stopper surface 27, when the welding projection 4 or the flange 33 escapes from the recess 28, the advancing speed of the supply rod 12 is determined by the welding projection 4. When it escapes from the depression 28, it hardly decreases. This is because the section of the recess 28 as viewed in the advancing direction of the supply rod 12 is extremely short, and the load increase with respect to the advancing of the supply rod 12 is instantaneous, and each of the members of the air cylinder 11 that advances the supply rod 12 and the supply rod 12. Since the inertial force acts, the advance speed of the supply rod 12 does not decrease. Therefore, after the welding protrusion 4 or the flange 33 has escaped from the recess 28, the attractive force of the auxiliary magnet 41 acts, so that smooth component supply is realized as described above.

  FIG. 2 shows a second embodiment of the present invention.

  In the second embodiment, the nut 1 is temporarily locked in the temporary lock chamber 7 by the opening / closing plate 30 as shown in FIG. 4B, and no magnet is assembled to the guide member 9. . Other configurations are the same as those of the first embodiment including the portions not shown, and members having the same functions are denoted by the same reference numerals.

  The operational effect of the second embodiment is the same as that of the first embodiment.

  FIG. 3 shows a second embodiment of the present invention.

  In the third embodiment, the location of the auxiliary magnet 41 is changed. 3A is a cross-sectional plan view, and FIG. 3B is a cross-sectional view. The auxiliary magnet 41 shown in FIG. 1 is moved laterally. A housing member 49 is welded to the lateral side surface 48 of the component supply pipe 6, and the housing member 49 extends in the same direction as the advancing direction of the supply rod 12. An auxiliary magnet 41 is embedded in the housing member 49. The other configurations are the same as those in the first and second embodiments including parts not shown, and the same reference numerals are given to members having similar functions.

  By arranging the auxiliary magnet 41 at such a position, the attractive magnetic force F1 with respect to the nut 1 is decomposed into force components F2 and F3. Among the decomposed force components, F3 is a force component that acts in a direction in which the nut 1 is pulled away from the stopper surface 27. Immediately after the nut 1 starts to move, that is, immediately after the welding projection 4 escapes from the recess, the force F3 starts the suction action on the nut 1. Further, as indicated by the two-dot chain line in FIG. By doing so, the direction of the suction force with respect to the nut 1 can be set in the direction of the center line of the component supply pipe 6.

  The operational effects of the third embodiment are the same as those of the first and second embodiments.

  As described above, according to the apparatus of the present invention, the sliding resistance of the perforated component with respect to the guide member can be eliminated, or can be reduced to a level that does not substantially cause a problem. Therefore, it can be used in a wide range of industrial fields such as automobile body welding processes and home appliance sheet metal welding processes.

DESCRIPTION OF SYMBOLS 1 Projection nut, perforated part 2 Main-body part 3 Screw hole 4 Welding protrusion 5 Supply apparatus 6 Component supply pipe 7 Temporary fixing chamber 8 Guide pipe 9 Guide member 12 Supply rod 20 Magnet 21 Protection board 27 Stopper surface 28 Depression 29 Scraping groove 30 Opening / closing plate 33 Flange 34 Gate plate 38 Depression 41 Auxiliary magnet 48 Side surface 49 Housing member L Projection length S1 of welding protrusion S2 Depression length S2 Rub groove length

Claims (2)

  A guide member in which a temporary fixing chamber of a perforated part is formed at a location where the parts supply pipe and the guide rod of the supply rod intersect, and a part of the inner wall of the temporary fixing chamber is formed on the extension direction side of the part supply pipe Is arranged, and after the perforated part positioned in the temporary fixing chamber by the stopper surface of the guide member starts moving by the advancement of the supply rod, an auxiliary magnet is disposed that exerts an attractive force on the perforated part, A perforated component supply apparatus, wherein the suction force of the auxiliary magnet to the perforated component acts in a direction in which the perforated component is pulled away from the stopper surface.   The perforated component supply device according to claim 1, wherein the perforated component is a projection nut provided with a welding projection or a flange.

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