WO2022219921A1 - 部品供給装置 - Google Patents
部品供給装置 Download PDFInfo
- Publication number
- WO2022219921A1 WO2022219921A1 PCT/JP2022/006596 JP2022006596W WO2022219921A1 WO 2022219921 A1 WO2022219921 A1 WO 2022219921A1 JP 2022006596 W JP2022006596 W JP 2022006596W WO 2022219921 A1 WO2022219921 A1 WO 2022219921A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rod
- axial direction
- gas
- wall portion
- posture
- Prior art date
Links
- 230000007246 mechanism Effects 0.000 claims description 43
- 238000007664 blowing Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 description 90
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
- B23P19/004—Feeding the articles from hoppers to machines or dispensers
- B23P19/005—Feeding the articles from hoppers to machines or dispensers by using flowing gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/14—Projection welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
- B23K11/004—Welding of a small piece to a great or broad piece
- B23K11/0046—Welding of a small piece to a great or broad piece the extremity of a small piece being welded to a base, e.g. cooling studs or fins to tubes or plates
- B23K11/0053—Stud welding, i.e. resistive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/062—Pierce nut setting machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G59/00—De-stacking of articles
- B65G59/06—De-stacking from the bottom of the stack
- B65G59/067—De-stacking from the bottom of the stack articles being separated substantially perpendicularly to the axis of the stack
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
- B23P19/006—Holding or positioning the article in front of the applying tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
- B65G2201/0214—Articles of special size, shape or weigh
Definitions
- the present disclosure relates to a component supply device that supplies components having through holes to target positions.
- a nut supply device (parts supply device) disclosed in Patent Document 1 has a small-diameter holding portion inserted into a threaded hole of a nut at the tip thereof, a rod that advances to supply the nut to a target position, and a rod that moves forward and backward.
- an air cylinder includes a cylindrical cylinder with a bottom that is open on the rod advance side, and a piston that is inserted into the cylinder and defines a gas chamber on the opposite side of the rod advance side in the cylinder.
- the rod is concentrically provided on the piston and protrudes toward the advancing side thereof.
- a gas outlet is formed on the outer circumference of the holding portion of the rod so as to face the side opposite to the advancing side of the rod.
- a gas passage is formed on the central axis of the piston and the rod to communicate the gas chamber and the gas outlet.
- the present disclosure has been made in view of this point, and its purpose is to synchronize the arrival of the parts to the target position and the stoppage of gas blowing from the rod in the parts supply device, To immediately remove a part reaching a target position from a rod.
- a component supply device is a component supply device that supplies a component having a through-hole to a target position, and has a holding portion at its tip that is inserted into the through-hole, and advances in the axial direction to move the component.
- a rod for supplying a component to the target position; an actuator for moving the rod back and forth in the axial direction; a valve attached to the rod and moving back and forth integrally with the rod; a fixed portion through which the valve that advances along with the rod passes by, the rod being provided on the outer periphery of the holding portion, and a gas outlet for blowing gas rearward in the axial direction; and a gas passage extending in the axial direction inside the rod and passing gas supplied from a gas supply source to the gas outlet, wherein the valve is configured to direct gas from the gas supply source to the gas passage.
- urging means for urging the valve to the pulled posture the fixed portion including a pressing wall portion facing the pressing switch and extending in the axial direction, and when the valve advances, the pressing switch: Before the component reaches the target position, it advances along the pressing wall portion, is pressed by the pressing wall portion, and assumes the pressing posture against the biasing force of the biasing means. reaches the target position, the pressure from the pressing wall portion is released, and the pressing posture is changed to the pulling posture by the biasing force of the biasing means.
- the rod is advanced in the axial direction by the actuator, the holding portion at the tip thereof is inserted into the through hole of the component, and the component hung on the holding portion is supplied to the target position.
- a valve attached to the rod advances as the rod advances.
- the push switch of the valve advances along the push wall of the fixed part and is pressed by the push wall to assume the pushing posture against the biasing force of the biasing means. .
- the gas supplied from the gas supply source flows into the gas passage inside the rod (open state), and then from the gas outlet on the outer periphery of the holding portion of the rod, axially rearward, that is, the part blown out toward Therefore, the part is firmly held in the holding portion of the rod before it reaches the target position and cannot come off from the holding portion of the rod.
- the pressure switch of the valve is released from the pressure by the pressure wall portion of the fixed portion, and changes from the push posture to the pull posture due to the biasing force of the biasing means.
- the gas supplied from the gas supply source does not flow into the gas passage inside the rod (closed state) and is not blown out from the gas outlet. Therefore, after the part reaches the target position, it will come off from the holding portion of the rod.
- the fixing portion includes an inclined wall portion that is connected to the front side of the pressing wall portion in the axial direction and that extends at an angle away from the central axis of the rod toward the front side in the axial direction. , wherein the press switch changes from the pushing posture to the pulling posture while moving forward along the inclined wall portion.
- the fixing portion is composed of a cover surrounding the rod and the actuator when viewed in the axial direction, and the pressing wall portion is included in a wall portion of the cover facing the pressing switch. ing.
- the cover surrounding the rod and the actuator is advantageous in protecting the rod and the actuator themselves and the peripheral devices provided thereon from disturbance. Furthermore, since the pressing wall portion is included in the wall portion of the cover, it is possible to use the cover to synchronize the arrival of the component to the target position and the stoppage of the blowing of gas from the gas blowing port. can. In this way, one cover can realize two functions of the protection function and the synchronization function, which is efficient.
- the valve has a lever interposed between the pressing wall portion and the pressing switch, and the pressing switch is pressed by the pressing wall portion via the lever.
- the actuator includes a stator extending in the axial direction and a mover moving forward and backward in the axial direction with respect to the stator, and the rod and the mover are arranged parallel to each other. and are connected to each other by connecting portions extending in a direction intersecting the axial direction.
- the entire component supply device can be made more compact in the axial direction than when the rod and the mover of the actuator are arranged linearly in the axial direction.
- the actuator is an air cylinder mechanism, and the air cylinder mechanism and the gas passage are supplied with gas from the same gas supply source.
- gas is supplied from the same gas supply source to the air cylinder mechanism and the gas passage, thereby performing two functions of moving the rod back and forth by the air cylinder mechanism and blowing the gas from the gas blowing port.
- the number of gas supply sources can be reduced compared to the case where gas is supplied to the air cylinder mechanism and the gas passage from separate gas supply sources.
- the actuator is an electric actuator such as a linear motor, the structure can be simplified because an electrical system for moving the rod back and forth is not required.
- a component supply device is a component supply device that supplies a component having a through-hole to a target position, and has a holding portion at its tip end that is inserted into the through-hole.
- a rod for supplying a component to the target position; an actuator for moving the rod back and forth in the axial direction; a valve attached to the rod and moving back and forth integrally with the rod; a fixed portion through which the valve that advances along with the rod passes by, the rod being provided on the outer periphery of the holding portion, and a gas outlet for blowing gas rearward in the axial direction; and a gas passage extending in the axial direction inside the rod and passing gas supplied from a gas supply source to the gas outlet, wherein the valve is configured to direct gas from the gas supply source to the gas passage.
- a push switch that can be switched between a pull posture corresponding to an open state in which the flow path is opened and a push posture corresponding to a closed state in which the gas flow path from the gas supply source to the gas passage is closed; urging means for urging the valve to the pulled posture, the fixed portion including a pressing wall portion facing the pressing switch and extending in the axial direction, and when the valve advances, the pressing switch: Before the component reaches the target position, it assumes the pulling posture due to the biasing force of the biasing means. The pushing posture is changed from the pulling posture against the urging force.
- the rod is advanced in the axial direction by the actuator, the holding portion at the tip thereof is inserted into the through hole of the component, and the component hung on the holding portion is supplied to the target position.
- a valve attached to the rod advances as the rod advances.
- the push switch of the valve is in the pulled position by the biasing force of the biasing means before the part reaches the target position.
- the gas supplied from the gas supply source flows into the gas passage inside the rod (open state), and then from the gas outlet on the outer periphery of the holding portion of the rod, axially rearward, that is, the part blown out toward Therefore, the part is firmly held in the holding portion of the rod before it reaches the target position and cannot come off from the holding portion of the rod.
- the pressure switch of the valve is pressed by the pressing wall portion of the fixed portion and changes from the pulling posture to the pushing posture against the biasing force of the biasing means.
- the gas supplied from the gas supply source does not flow into the gas passage inside the rod (closed state) and is not blown out from the gas outlet. Therefore, after the part reaches the target position, it will come off from the holding portion of the rod.
- the fixing portion includes an inclined wall portion connected to the rear side of the pressing wall portion in the axial direction and extending in an inclined manner away from the central axis of the rod toward the axial rearward direction. , wherein the push switch changes from the pull posture to the push posture while moving forward along the inclined wall portion.
- the arrival of the component at the target position is synchronized with the stoppage of gas blowing from the rod, so that the component that has reached the target position can be immediately removed from the rod.
- FIG. 1 is a front view of the nut feeding device according to the first embodiment of the present disclosure, showing a state before the nut reaches the target position.
- FIG. 2 is a perspective view showing a nut.
- FIG. 3 is a perspective view showing a nut receiver.
- FIG. 4 is a front view showing details of the tip of the rod.
- FIG. 5 is a front cross-sectional view showing the internal structure of the valve when the push rod is in the pulled posture.
- FIG. 6 is a view equivalent to FIG. 5 in which the push rod is in the pushing posture.
- FIG. 7 is a perspective view showing a cover.
- FIG. 8 is a view corresponding to FIG. 1 showing the state after the nut reaches the target position.
- FIG. 9 is a view corresponding to FIG. 1 according to the second embodiment.
- FIG. 10 is a view corresponding to FIG. 1 according to the third embodiment.
- FIG. 11 is a view corresponding to FIG. 8 according to the third embodiment.
- the direction in which the central axis of the rod extends is the axial direction.
- the left-right direction (axial direction) in FIG. 1 is sometimes referred to as the front-rear direction.
- the vertical direction in FIG. 1 is referred to as the vertical direction.
- a nut supply device 1 as a component supply device supplies a nut N as a component to a target position T (for example, between a pair of welding electrodes in a resistance welder).
- the target position T does not indicate only one point, but has a certain width (approximately 0 mm to 100 mm) in the axial direction, as shown in FIG.
- the nut N is a square welding nut, and a threaded hole N2 as a through hole is provided in the center of a regular square prism-shaped body portion N1.
- Welding projections N3 are provided at the four corners of the bottom surface of the main body portion N1.
- the nut supply device 1 includes a bracket 2, a rod 10, an air cylinder mechanism 20 as an actuator, a nut receiver 30, a valve 40, and a cover 50 as a fixing portion.
- the rod 10 has a body portion 11 and a holding portion 12.
- the holding portion 12 is provided at the tip (front end) of the rod 10 and has a diameter smaller than that of the main body portion 11 .
- a step portion 13 (see FIG. 4) is formed between the body portion 11 and the holding portion 12 .
- the outer diameter of the body portion 11 is larger than the inner diameter of the screw hole N2 of the nut N.
- the outer diameter of the holding portion 12 is smaller than the inner diameter of the screw hole N2 of the nut N.
- the rod 10 By moving forward in its axial direction (longitudinal direction), the rod 10 inserts the holding portion 12 into the screw hole N2 of the nut N, and supplies the nut N hung on the holding portion 12 to the target position T.
- the air cylinder mechanism 20 is fixed on the substantially rectangular plate-shaped base 2a of the bracket 2.
- the air cylinder mechanism 20 is a so-called rodless air cylinder mechanism.
- the air cylinder mechanism 20 has a cylinder tube 21 as a stator, a piston 22 as part of the mover, and a slide table 23 as part of the mover.
- the cylinder tube 21 has a substantially square tubular shape with both ends in the axial direction closed, and extends in the axial direction.
- the piston 22 moves axially back and forth relative to the cylinder tube 21 along the cylinder tube 21 inside the cylinder tube 21 .
- the slide table 23 has a substantially plate-like shape elongated in the axial direction, and is arranged above the cylinder tube 21 .
- the slide table 23 can move back and forth in the axial direction.
- a slit (not shown) extending in the axial direction is formed in the center of the upper wall portion of the cylinder tube 21 in the width direction (the direction perpendicular to the paper surface of FIG. 1).
- the piston 22 and the slide table 23 are connected to each other by a connecting portion (not shown) extending vertically through the slit.
- the slide table 23 moves the upper side of the cylinder tube 21 relative to the cylinder tube 21 in the axial direction along the cylinder tube 21 in conjunction with the forward and backward movement of the piston 22 .
- a first air chamber 24 is formed inside the cylinder tube 21 on the rear side of the piston 22 in the axial direction. Inside the cylinder tube 21 , a second air chamber 25 is formed axially forward of the piston 22 .
- the first air chamber 24 communicates with an air pump P as a gas supply source via a hose H1.
- the second air chamber 25 communicates with the air pump P via the hose H2.
- hose H1 and hose H2 are independent of each other.
- the piston 22 and the slide table 23 move forward and backward in the axial direction. Specifically, when the nut supply device 1 is in forward mode, air is supplied from the air pump P to the first air chamber 24 through the hose H1, thereby moving the piston 22 and the slide table 23 forward. Air is sent out from the second air chamber 25 whose volume has been reduced by the advance of the piston 22, and is discharged to the exhaust section E via the hose H2.
- the rod 10, the slide table 23 and the piston 22 are arranged parallel to each other (specifically, geometrically parallel). More specifically, the central axis of the rod 10 is arranged above the slide table 23 (piston 22).
- a substantially L-shaped connecting member 3 is fixed on the slide table 23 when viewed from the front.
- the connecting member 3 is composed of a horizontal portion 3a and a vertical portion 3b.
- the horizontal portion 3 a extends axially along the slide table 23 .
- the vertical portion 3b extends in a direction perpendicular to the axial direction (upward direction) from the front end portion of the horizontal portion 3a.
- the rod 10 passes through a through-hole provided in the vertical wall portion 2b of the bracket 2 rising from the front end portion of the base 2a.
- the rod 10 and the slide table 23 are connected to each other by the vertical portion 3b of the connecting member 3. Specifically, the rod 10 is connected to the slide table 23 by being inserted through a through hole (not shown) provided in the vertical portion 3 b of the connecting member 3 .
- the air cylinder mechanism 20 moves the rod 10 back and forth in the axial direction by moving the piston 22 and the slide table 23 back and forth in the axial direction.
- An axial position sensor 6 for detecting the axial position of the rod 10 is attached to the front end of the cylinder tube 21 of the air cylinder mechanism 20 .
- the nut receiver 30 is attached to the front side of the vertical wall portion 2b of the bracket 2 with the fixing nut 4.
- the mounting portion 31 on the back of the nut receiver 30 is provided with a male screw portion 31a.
- the male screw portion 31a penetrates the through hole of the vertical wall portion 2b from the front side to the rear side.
- the nut receiver 30 is fixed to the vertical wall portion 2b by tightening the fixing nut 4 to the male screw portion 31a projecting rearward from the vertical wall portion 2b.
- the attachment portion 31 is provided with a rod through hole 32 through which the rod 10 is passed.
- the nut receiver 30 receives the nut N sent by the nut shooter 5 with the protrusion N3 facing forward in the axial direction.
- An opening provided on the back of the stopper 33 communicates with the rod through-hole 32 .
- a discharge hole 34 is provided in the lower portion of the stopper 33 . The discharge hole 34 is for discharging the undersized nut to the outside when the undersized nut having a smaller diameter than the regular nut of the regular dimension is mistakenly sent to the nut receiver 30 .
- valve 40 is attached to the rear end of the rod 10 and moves forward and backward integrally with the rod 10 . Details of the valve 40 will be described later.
- the rod 10 has an air outlet (gas outlet) 14 and an air passage (gas passage) 15 .
- a plurality of air outlets 14 are provided on the outer periphery of the holding portion 12 .
- the air outlet 14 opens to face the rear in the axial direction, that is, the stepped portion 13 .
- the air passage 15 extends axially inside the rod 10 (on the central axis).
- the air passage 15 communicates with the air outlet 14 at the front end in the axial direction.
- the air passage 15 communicates with an air pump P via a valve 40 at its rear end in the axial direction (see FIG. 1).
- the air supplied from the air pump P is supplied to the air passage 15 inside the rod 10 via the hose H3 and the valve 40. That is, air is supplied from the same air pump P to the first air chamber 24 and the second air chamber 25 of the air cylinder mechanism 20 and the air passage 15 inside the rod 10 .
- the air passage 15 allows the air supplied from the air pump P to pass through the air outlet 14 .
- the air outlet 14 blows out the air sent from the air passage 15 axially rearward, that is, toward the stepped portion 13 .
- the hose H3 is branched from the middle of the hose H1.
- valve 40 opens and closes the air flow path A from the air pump P to the air passage 15 .
- the valve 40 is of push type.
- the valve 40 has a casing 41 , a valve body 42 , an inlet port 43 , an outlet port 44 , a push rod 45 as a press switch, a spring 46 as biasing means, and a lever 47 .
- a valve body 42 is housed inside the casing 41 .
- the inlet port 43 is connected to the hose H3 and communicates with the air pump P.
- the outlet port 44 is connected to the rear end of the rod 10 and communicates with the air passage 15 .
- a push rod 45 and a spring 46 are arranged on both sides (upper and lower sides) of the valve body 42 .
- the push rod 45 extends in a direction (vertical direction) perpendicular to the axial direction.
- the pushing/pulling direction (acting direction) of the push rod 45 is a direction (vertical direction) perpendicular to the axial direction.
- the direction in which the biasing force of the spring 46 acts is a direction perpendicular to the axial direction (vertical direction).
- the push rod 45 when the push rod 45 is in a loaded state in which a pressing force is applied from the outside, the push rod 45 pushes the valve body 42 downward against the biasing force of the spring 46 .
- the push rod 45 itself is in a pushing posture pushed downward.
- the push posture of the push rod 45 corresponds to the open state of the channel A.
- the push rod 45 is switched between the pushing posture (open state) and the pulling posture (closed state) by a pressing force from the outside.
- the lever 47 is attached to the front end of the upper portion of the casing 41 via a hinge 47a.
- the lever 47 extends axially rearward from the hinge 47 a so as to cover the upper side of the push rod 45 .
- the lever 47 opens axially forward from the hinge 47a and closes axially rearward.
- a guide roller 47 b is provided at the tip of the lever 47 .
- the push rod 45 is pressed from outside via a lever 47 .
- the cover 50 surrounds the rod 10 and the air cylinder mechanism 20 when viewed in the axial direction.
- the cover 50 extends longitudinally in the axial direction.
- the cover 50 is formed by pressing an iron plate.
- the cover 50 has an upper wall portion 51 and side wall portions 52 on both sides, and is open on both front and rear sides in the axial direction and on the lower side.
- the upper wall portion 51 covers the rod 10 and the air cylinder mechanism 20 from above.
- the side wall portion 52 covers the rod 10 and the air cylinder mechanism 20 from both sides in the width direction.
- the cover 50 is fixed to the base 2a of the bracket 2 so as to fit into the base 2a from above. That is, the base 2a serves as a substitute for the lower wall portion of the cover 50.
- the side wall portion 52 is provided with holes and notches for attaching the hoses H1 and H2 and the axial position sensor 6 to the air cylinder mechanism 20 .
- the upper wall portion 51 of the cover 50 includes a pressing wall portion 51a on the rear side in the axial direction, a non-pressing wall portion 51b on the front side in the axial direction, and a pressing wall portion 51a and a non-pressing wall portion 51b. and a slanted wall portion 51c connecting the .
- the pressing wall portion 51a extends straight in the axial direction at the axial rear portion of the cover 50.
- the inclined wall portion 51c is connected to the front side in the axial direction of the pressing wall portion 51a.
- the inclined wall portion 51c extends at an axially intermediate portion of the cover 50 so as to be inclined away from the central axis of the rod 10 (toward the upper left in FIG. 1) as it goes axially forward.
- the non-pressing wall portion 51b is connected to the front side in the axial direction of the inclined wall portion 51c.
- the non-pressing wall portion 51b extends straight in the axial direction in the axially front portion of the cover 50 .
- the non-pressing wall portion 51b is further away from the central axis of the rod 10 than the pressing wall portion 51a.
- the cover 50 Since the cover 50 is fixed to the base 2a, it does not move back and forth integrally with the rod 10 in the axial direction. That is, the rod 10 moves axially relative to the cover 50 .
- the valve 40 advancing with the rod 10 passes beside (near) the upper wall portion 51 of the cover 50 .
- the upper wall portion 51 faces the push rod 45 (lever 47) of the valve 40. That is, the pressing wall portion 51a, the non-pressing wall portion 51b, and the inclined wall portion 51c all face the pressing rod 45 (lever 47). Specifically, the upper wall portion 51 faces the pushing/pulling direction (acting direction) of the push rod 45 and the acting direction of the biasing force of the spring 46 . That is, the pressing wall portion 51a, the non-pressing wall portion 51b, and the inclined wall portion 51c all face the pushing/pulling direction (action direction) of the push rod 45 and the action direction of the biasing force of the spring 46. As shown in FIG. The lever 47 is interposed between the upper wall portion 51 and the push rod 45 . Specifically, the lever 47 is interposed between the pressing wall portion 51 a , the non-pressing wall portion 51 b , the inclined wall portion 51 c and the pressing rod 45 .
- the push rod 45 of the valve 40 advances along the pressing wall portion 51a of the cover 50 before the nut N reaches the target position T. .
- the guide roller 47b of the lever 47 of the valve 40 rotates while contacting the pressing wall portion 51a.
- the push rod 45 is pressed by the pressing wall portion 51 a via the lever 47 .
- the push rod 45 assumes the pushing posture against the biasing force of the spring 46 (see FIG. 6).
- the push rod 45 shifts from the pushing posture to the pulling posture while moving forward along the inclined wall portion 51c after passing over the pressing wall portion 51a. More specifically, the pressing force that the push rod 45 receives from the inclined wall portion 51c gradually decreases as the valve 40 advances. That is, the push rod 45 gradually changes from the pushing posture to the pulling posture while moving forward along the inclined wall portion 51c.
- the push rod 45 assumes the push posture before the nut N reaches the target position T, and the push rod 45 assumes the pull posture after the nut N reaches the target position T.
- the dimensions, shape, etc. of the cover 50 are laid out.
- the axial position and length of the pressing wall portion 51a, the distance of the pressing wall portion 51a from the central axis of the rod 10 (the distance from the pressing rod 45), and the distance of the non-pressing wall portion 51b from the central axis of the rod 10 (Distance from push bar 45) is important.
- the rod 10 advances in the axial direction as the slide table 23 of the air cylinder mechanism 20 advances.
- the holding portion 12 at the tip of the rod 10 is inserted into the screw hole N2 of the nut N, and the nut N hooked on the holding portion 12 is supplied to the target position T.
- the valve 40 attached to the rod 10 advances as the rod 10 advances.
- the push rod 45 of the valve 40 advances along the pressing wall portion 51a of the cover 50 before the nut N reaches the target position T. As shown in FIG. Then, the push rod 45 is pushed by the push wall portion 51a through the lever 47, and assumes the pushing posture against the biasing force of the spring 46. As shown in FIG.
- the valve body 42 of the valve 40 is pushed down, and the flow path A communicating between the air pump P and the air passage 15 inside the rod 10 is opened (see FIG. 6).
- air supplied from the air pump P flows to the air passage 15 .
- the air flowing axially forward through the air passage 15 is blown out from the air outlet 14 on the outer periphery of the holding portion 12 of the rod 10 toward the stepped portion 13 axially rearward, that is, toward the nut N.
- the nut N is pressed against the stepped portion 13 of the rod 10 . Therefore, before reaching the target position T, the nut N is firmly held by the holding portion 12 of the rod 10 and does not come off from the holding portion 12 of the rod 10 .
- the valve body 42 of the valve 40 is lifted, and the flow path A communicating between the air pump P and the air passage 15 inside the rod 10 is closed (see FIG. 5).
- the air supplied from the air pump P does not flow to the air passage 15 and is not blown out from the air outlet 14 on the outer circumference of the holding portion 12 of the rod 10 . Therefore, after reaching the target position T, the nut N comes off from the holding portion 12 of the rod 10 .
- the arrival of the nut N at the target position T and the stoppage of air blowing from the air blowing port 14 are synchronized with each other. This allows the nut N to come off the holding portion 12 of the rod 10 as soon as the nut N reaches the target position T. Therefore, the time required for the nut N to come off the rod 10 after the nut N reaches the target position T can be shortened.
- the nut supply device 1 goes into retreat mode.
- air supplied from the air pump P is sent to the second air chamber 25 of the air cylinder mechanism 20 via the hose H2.
- the piston 22 and the slide table 23 in the air cylinder mechanism 20 retreat in the axial direction.
- Air is sent out from the first air chamber 24 whose volume has been reduced by the retraction of the piston 22, and is discharged to the exhaust section E via the hose H1.
- air does not flow to valve 40 (air passage 15).
- the cover 50 surrounding the rod 10 and the air cylinder mechanism 20 is advantageous in protecting the rod 10 and the air cylinder mechanism 20 themselves and the peripheral devices provided thereon from disturbance.
- the rod 10 and the air cylinder mechanism 20 themselves can be protected from external physical impact.
- the cover 50 is made of iron, the shaft position sensor 6 attached to the air cylinder mechanism 20 can be protected from a strong magnetic field generated by, for example, a resistance welder. As a result, malfunction of the shaft position sensor 6 can be suppressed.
- the nut N can reach the target position T by using the cover 50, and the blowing of air from the air blowing port 14 can be stopped. can be synchronized with each other. In this way, one cover 50 can achieve the two functions of the protection function and the synchronization function, which is efficient.
- the pressing force required to bring the push rod 45 into the pushing posture can be reduced compared to when the lever 47 is not provided.
- the valve 40 can move smoothly along the pressing wall portion 51a.
- the rod 10 and the mover (the piston 22 and the slide table 23) of the air cylinder mechanism 20 are arranged in parallel to each other, the rod 10 and the mover (the piston 22) of the air cylinder mechanism 20 are arranged linearly in the axial direction.
- the entire nut supply device 1 can be made compact in the axial direction compared to the case of lining up in parallel (see FIG. 9).
- the rod 10 By supplying air from the same air pump P to the air cylinder mechanism 20 and the air passage 15 inside the rod 10, the rod 10 is moved back and forth by the air cylinder mechanism 20 and the air is blown out from the air outlet 14. It is possible to realize two actions. Therefore, the number of air pumps P can be reduced compared to the case where air is supplied from separate air pumps P to the air cylinder mechanism 20 and the air passage 15 .
- the actuator is not a pneumatic actuator such as the air cylinder mechanism 20, but an electric actuator such as a linear motor, the configuration is reduced to the extent that an electric system for moving the rod 10 back and forth is not required. can be simplified.
- the air cylinder mechanism 20 is a rodless air cylinder mechanism, and the rod 10 and the mover (the piston 22 and the slide table 23) of the air cylinder mechanism 20 are arranged in parallel with each other, but the present invention is not limited to this.
- FIG. 9 shows a nut supply device 1 according to a second embodiment.
- the air cylinder mechanism 20 is a normal rod-equipped air cylinder mechanism.
- a piston rod 26 coupled to a piston 22 protrudes axially forward from a cylinder tube 21 of the air cylinder mechanism 20 .
- the rod 10 is connected to the piston rod 26 by a connecting member 7 extending in a direction perpendicular to the axial direction (vertical direction).
- ⁇ Third Embodiment> 10 and 11 show a nut supply device 1 according to a third embodiment.
- configurations similar to those of the above-described embodiment are denoted by the same reference numerals, and detailed description may be omitted.
- valve 40 is of the pull type. Although illustration of the internal structure of the valve 40 is omitted, the valve body 42 is lifted by the biasing force of the spring 46 when the push rod 45 is in a no-load state where no pressing force is applied from the outside. As the valve body 42 is lifted, the push rod 45 is pulled upward. That is, the spring 46 urges the push rod 45 to the pulling posture. The push rod 45 in the pulling posture protrudes greatly upward from the upper surface of the casing 41 . Unlike the above embodiment, lifting the valve element 42 opens the air flow path A from the inlet port 43 (air pump P) to the outlet port 44 (air passage 15). The pulling posture of the push rod 45 corresponds to the open state of the flow path A.
- valve 40 Although illustration of the internal structure of the valve 40 is omitted, when the push rod 45 is in a loaded state in which a pressing force is applied from the outside, the push rod 45 is pulled by the spring 46 . The valve body 42 is pushed downward against the urging force. The push rod 45 itself is in a pushing posture pushed downward. Unlike the above-described embodiment, when the valve body 42 is pushed down, the air flow path A from the inlet port 43 (air pump P) to the outlet port 44 (air passage 15) is closed. The pushing posture of the push rod 45 corresponds to the closed state of the channel A. As shown in FIG.
- the positions of the pressing wall portion 51a and the non-pressing wall portion 51b are opposite to each other as compared with the above embodiment. That is, the pressing wall portion 51a extends straight in the axial direction at the axially front portion of the cover 50 .
- the inclined wall portion 51c is connected to the axial rear side of the pressing wall portion 51a.
- the inclined wall portion 51c extends at an axially intermediate portion of the cover 50 so as to be inclined (toward the upper right in FIGS. 10 and 11) away from the central axis of the rod 10 as it goes axially rearward (axially forward). , extending obliquely so as to approach the central axis of the rod 10 as it goes toward ).
- the non-pressing wall portion 51b is connected to the axial rear side of the inclined wall portion 51c.
- the non-pressing wall portion 51b extends straight in the axial direction at the axial rear portion of the cover 50 .
- the non-pressing wall portion 51b is further away from the central axis of the rod 10 than the pressing wall portion 51a.
- the push rod 45 of the valve 40 advances along the non-pressing wall portion 51b of the cover 50 before the nut N reaches the target position T. do.
- the push rod 45 is not pressed by the non-pressing wall portion 51b and is pulled by the biasing force of the spring 46.
- the flow path A communicating between the air pump P and the air passage 15 inside the rod 10 is opened to be in an open state.
- the push rod 45 shifts from the pulling posture to the pushing posture while moving forward along the inclined wall portion 51c. More specifically, the pressing force that the push rod 45 receives from the inclined wall portion 51c gradually increases as the valve 40 moves forward. That is, the push rod 45 gradually changes from the pulling posture to the pushing posture while moving forward along the inclined wall portion 51c.
- the vertical portion 3b of the connecting member 3 may extend so as to obliquely intersect the axial direction instead of extending so as to be completely perpendicular to the axial direction.
- an electric linear motor, ball screw mechanism, or the like may be employed as the actuator.
- the lever 47 may extend in a direction orthogonal to the axial direction.
- the lever 47 may not be provided on the valve 40, and the push rod 45 may be directly pressed from the pressing wall portion 51a (button type).
- valve 40 when the flow path A is closed, some air may flow from the air pump P to the air passage 15, and the amount of air flowing from the air pump P to the air passage 15 is greater than when the flow path A is open. It is good if the flow rate of is small.
- the material of the cover 50 is not limited to iron, and may be non-ferrous metal, plastic, or the like.
- the upper wall portion 51 of the cover 50 may not include the non-pressing wall portion 51b and the inclined wall portion 51c.
- cover 50 is used as the fixed part in this embodiment, it is not limited to this.
- a bracket or the like attached only to hold down the push rod 45 may be employed.
- gas instead of air, for example, industrial nitrogen gas or the like may be used.
- the field of application of the nut supply device 1 is not limited to resistance welders.
- the part is not limited to the nut N, and may be, for example, a washer with a through hole, a bolt, or a sleeve.
- Air pump gas supply source
- valve 42 valve element 45 push rod (press switch) 46 spring (biasing means) 47 lever 50 cover (fixed part) 51 upper wall (wall) 51a pressing wall portion 51b non-pressing wall portion 51c inclined wall portion
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Abstract
Description
以下、本開示の第1の実施形態を図面に基づいて詳細に説明する。以下の好ましい実施形態の説明は、本質的に例示に過ぎず、本開示、その適用物あるいはその用途を制限することを意図するものでは全くない。本実施形態では、ロッドの中心軸が延びる方向を、軸方向とする。図1における左右方向(軸方向)を、前後方向という場合がある。図1における上下方向を上下方向という。
図1に示すように、部品供給装置としてのナット供給装置1は、部品としてのナットNを、目的位置T(例えば、抵抗溶接機における一対の溶接電極の間)に、供給する。目的位置Tは、ある一点のみを示すのではなく、図1に示すように、軸方向において、ある程度(0mm~100mm程度)の幅を有する。
図1に示すように、ナット供給装置1が前進モードのとき、エアポンプPから供給された空気は、ホースH1を介して、エアシリンダ機構20の第1空気室24に送られる。これにより、エアシリンダ機構20におけるピストン22及びスライドテーブル23が軸方方向に前進する。ピストン22の前進によって体積が小さくなった第2空気室25からは、空気が送り出され、ホースH2を介して、排気部Eに排出される。ホースH1を流れる空気の一部は、途中で分岐して、ホースH3を介して、バルブ40へ送られる。
上記実施形態では、エアシリンダ機構20をロッドレスエアシリンダ機構として、ロッド10とエアシリンダ機構20の可動子(ピストン22及びスライドテーブル23)とが互いに並行に配置されているが、これに限定されない。図9は、第2の実施形態に係るナット供給装置1を示す。以下の説明において、上記実施形態と同様の構成については同じ符号を付し、詳細な説明を省略する場合がある。
図10,11は、第3の実施形態に係るナット供給装置1を示す。以下の説明において、上記実施形態と同様の構成については同じ符号を付し、詳細な説明を省略する場合がある。
バルブ40の内部構造の図示は省略するが、押棒45に外部から押さえ力が加えられる負荷状態のとき、押棒45は、スプリング46の付勢力に抗して、弁体42を下側に押し下げる。押棒45自身は、下側に押された押し姿勢となる。上記実施形態とは異なり、弁体42の押し下げによって、入口ポート43(エアポンプP)から出口ポート44(空気通路15)への空気の流路Aを閉じる閉状態となる。押棒45の押し姿勢は、流路Aの閉状態に対応する。
以上、本開示を好適な実施形態により説明してきたが、こうした記述は限定事項ではなく、勿論、種々の改変が可能である。
P エアポンプ(気体供給源)
A 流路
N ナット(部品)
N2 ねじ孔(貫通孔)
1 ナット供給装置(部品供給装置)
3 連結部材(連結部)
3b 垂直部
10 ロッド
12 保持部
14 空気吹出口(気体吹出口)
15 空気通路(気体通路)
20 エアシリンダ機構(アクチュエータ)
21 シリンダチューブ(固定子)
22 ピストン(可動子)
23 スライドテーブル(可動子)
40 バルブ
42 弁体
45 押棒(押圧スイッチ)
46 スプリング(付勢手段)
47 レバー
50 カバー(固定部)
51 上壁部(壁部)
51a 押圧壁部
51b 非押圧壁部
51c 傾斜壁部
Claims (8)
- 貫通孔を有する部品を目的位置に供給する部品供給装置であって、
前記貫通孔に差し通す保持部を先端に有し、軸方向への前進によって前記部品を前記目的位置に供給するロッドと、
前記ロッドを前記軸方向に進退移動させるアクチュエータと、
前記ロッドに取り付けられ、前記ロッドと一体的に進退移動するバルブと、
前記ロッドと一体的に進退移動せず、前記ロッドに伴って前進する前記バルブが傍らを通過する固定部と、を備え、
前記ロッドは、
前記保持部の外周に設けられ、前記軸方向の後方に気体を吹き出す気体吹出口と、
前記ロッドの内部を前記軸方向に延び、気体供給源から供給された気体を前記気体吹出口に通す気体通路と、を有し、
前記バルブは、
前記気体供給源から前記気体通路への気体の流路を開く開状態に対応する押し姿勢と、前記気体供給源から前記気体通路への気体の流路を閉じる閉状態に対応する引き姿勢と、に切り換えられる押圧スイッチと、
前記押圧スイッチを前記引き姿勢に付勢する付勢手段と、を有し、
前記固定部は、前記押圧スイッチに臨むとともに前記軸方向に延びる押圧壁部を含み、
前記バルブの前進時において、前記押圧スイッチは、前記部品が前記目的位置に到達する前、前記押圧壁部に沿って前進するとともに、前記押圧壁部に押さえられて前記付勢手段の付勢力に抗して前記押し姿勢となる一方、前記部品が前記目的位置に到達した後、前記押圧壁部からの押さえが解除されて、前記付勢手段の付勢力によって前記押し姿勢から前記引き姿勢となる、部品供給装置。 - 貫通孔を有する部品を目的位置に供給する部品供給装置であって、
前記貫通孔に差し通す保持部を先端に有し、軸方向への前進によって前記部品を前記目的位置に供給するロッドと、
前記ロッドを前記軸方向に進退移動させるアクチュエータと、
前記ロッドに取り付けられ、前記ロッドと一体的に進退移動するバルブと、
前記ロッドと一体的に進退移動せず、前記ロッドに伴って前進する前記バルブが傍らを通過する固定部と、を備え、
前記ロッドは、
前記保持部の外周に設けられ、前記軸方向の後方に気体を吹き出す気体吹出口と、
前記ロッドの内部を前記軸方向に延び、気体供給源から供給された気体を前記気体吹出口に通す気体通路と、を有し、
前記バルブは、
前記気体供給源から前記気体通路への気体の流路を開く開状態に対応する引き姿勢と、前記気体供給源から前記気体通路への気体の流路を閉じる閉状態に対応する押し姿勢と、に切り換えられる押圧スイッチと、
前記押圧スイッチを前記引き姿勢に付勢する付勢手段と、を有し、
前記固定部は、前記押圧スイッチに臨むとともに前記軸方向に延びる押圧壁部を含み、
前記バルブの前進時において、前記押圧スイッチは、前記部品が前記目的位置に到達する前、前記付勢手段の付勢力によって前記引き姿勢となる一方、前記部品が前記目的位置に到達した後、前記押圧壁部に押さえられて前記付勢手段の付勢力に抗して前記引き姿勢から前記押し姿勢となる、部品供給装置。 - 請求項1に記載の部品供給装置において、
前記固定部は、前記押圧壁部の前記軸方向の前側に接続されるとともに前記軸方向の前方に向かうに従って前記ロッドの中心軸から離れるように傾斜して延びる傾斜壁部を、含み、
前記押圧スイッチは、前記傾斜壁部に沿って前進中に、前記押し姿勢から前記引き姿勢となる、部品供給装置。 - 請求項2に記載の部品供給装置において、
前記固定部は、前記押圧壁部の前記軸方向の後側に接続されるとともに前記軸方向の後方に向かうに従って前記ロッドの中心軸から離れるよう傾斜して延びる傾斜壁部を、含み、
前記押圧スイッチは、前記傾斜壁部に沿って前進中に、前記引き姿勢から前記押し姿勢となる、部品供給装置。 - 請求項1から4のいずれか1つに記載の部品供給装置において、
前記固定部は、前記軸方向に見て、前記ロッド及び前記アクチュエータを取り囲むカバーで構成されており、
前記押圧壁部は、前記カバーにおける前記押圧スイッチに臨む壁部に含まれている、部品供給装置。 - 請求項1から5のいずれか1つに記載の部品供給装置において、
前記バルブは、前記押圧壁部と前記押圧スイッチとの間に介在するレバーを、有し、
前記押圧スイッチは、前記レバーを介して前記押圧壁部によって押さえられる、部品供給装置。 - 請求項1から6のいずれか1つに記載の部品供給装置において、
前記アクチュエータは、
前記軸方向に延びる固定子と、
前記固定子に対して前記軸方向に進退移動する可動子と、を有し、
前記ロッドと前記可動子とは、互いに並行に配置されているとともに、前記軸方向と交差する方向に延びる連結部によって互いに連結されている、部品供給装置。 - 請求項1から7のいずれか1つに記載の部品供給装置において、
前記アクチュエータは、エアシリンダ機構であり、
前記エアシリンダ機構及び前記気体通路は、互いに同一の前記気体供給源から気体を供給される、部品供給装置。
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KR1020237038375A KR20230172513A (ko) | 2021-04-16 | 2022-02-18 | 부품 공급 장치 |
EP22787849.3A EP4321460A1 (en) | 2021-04-16 | 2022-02-18 | Component supply device |
CN202290000387.9U CN221115885U (zh) | 2021-04-16 | 2022-02-18 | 零部件供给装置 |
US18/379,216 US11951558B2 (en) | 2021-04-16 | 2023-10-12 | Component supply device |
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JP2020037125A (ja) | 2018-09-05 | 2020-03-12 | セキ工業株式会社 | ナット供給装置 |
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US5007795A (en) * | 1989-10-06 | 1991-04-16 | Yajima Kogyo, Inc. | Supply head of nut feeder |
ATE413251T1 (de) * | 2000-09-09 | 2008-11-15 | Yoshitaka Aoyama | Verfahren und vorrichtung zum automatischen zuführen von teilen mit durchgangslöchern |
US7559435B2 (en) * | 2003-09-16 | 2009-07-14 | Seki Kogyo Co., Ltd. | Nut feeder |
US7398896B2 (en) * | 2005-07-14 | 2008-07-15 | Utica Enterpries, Inc. | Vehicle body sheet metal clinch nut feeder |
US7753230B2 (en) * | 2007-12-20 | 2010-07-13 | Mikio Kusano | Nut feeder |
-
2021
- 2021-04-16 JP JP2021069745A patent/JP6928990B1/ja active Active
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2022
- 2022-02-18 EP EP22787849.3A patent/EP4321460A1/en active Pending
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- 2022-02-18 WO PCT/JP2022/006596 patent/WO2022219921A1/ja active Application Filing
- 2022-02-18 KR KR1020237038375A patent/KR20230172513A/ko unknown
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2023
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US4270237A (en) * | 1979-10-22 | 1981-06-02 | Western Electric Company, Inc. | Portable apparatus for assembling nuts and washers on threaded studs |
JPH1043870A (ja) * | 1996-07-31 | 1998-02-17 | Seki Kogyo Kk | ナット用抵抗溶接装置の可動電極部構造 |
JP2005111559A (ja) * | 2003-09-16 | 2005-04-28 | Seki Kogyo Kk | ナット供給装置 |
JP2020037125A (ja) | 2018-09-05 | 2020-03-12 | セキ工業株式会社 | ナット供給装置 |
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EP4321460A1 (en) | 2024-02-14 |
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US11951558B2 (en) | 2024-04-09 |
JP2022164325A (ja) | 2022-10-27 |
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JP6928990B1 (ja) | 2021-09-01 |
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