JP6160921B2 - Parts supply device - Google Patents

Description

  The present invention relates to a component supply device that supplies a component temporarily locked in a temporary fixing chamber to a target location by an advancing / retracting supply rod.

  In Japanese Patent No. 3985237, the projection nut that has entered the temporary fixing chamber from the component supply passage is received and temporarily locked by a stopper member, and the guide hole of the advancing / retracting operation type supply rod opens to the temporary fixing chamber, It is described that the nut is held on a supply rod and supplied to a target location.

Japanese Patent No. 3985237

  The technique described in Patent Document 1 is shown in FIG. That is, the supply pipe 51 that forms the component supply passage 50 and the guide cylinder 53 that accommodates the supply rod 52 in a state where the supply rod 52 can be advanced and retracted are welded in an orthogonal relationship, thereby forming a temporary fixing chamber 54. The stopper member 55 is formed of a thick plate-like member, and is fixed in a state of being pressed against a flat mounting surface 56 formed on the guide cylinder 53. This fixing is performed by a fixing bolt 58 screwed into a fixing piece 57 welded to the guide cylinder 53. A permanent magnet 59 is embedded in the stopper member 55.

  With this configuration, the component here is the projection nut 60, and the supply rod 52 is formed with a guide rod 61 that enters the screw hole and a pressing surface 62 that presses down the end surface of the projection nut 60.

  The nut 60 that has passed through the component supply passage 50 enters the temporary fixing chamber 54 and is attracted by the permanent magnet 59 and temporarily locked. Next, the supply rod 52 advances, the guide rod 61 enters the screw hole, the pressing surface 62 pushes down the end surface of the nut, and the nut 60 is supplied to the target location. A representative target portion is a guide pin of an electric resistance welding electrode, although not shown.

  In the configuration as described above, since the guide cylinder 53 and the stopper member 55 for guiding the supply rod 52 are separate parts, there is a problem that the relative positions of the guide cylinder 53 and the stopper member 55 are not accurately set. That is, if the mounting surface 56 is slightly inclined or the supply rod 52 in the guide tube 53 is eccentric, the coaxiality between the guide rod 61 and the screw hole cannot be maintained, and the guide rod 61 is placed in the screw hole. The problem that it cannot enter correctly occurs.

  Such a problem is caused by the fact that the temporary fixing chamber 54 is composed of a plurality of members, and that the relative position between the stop surface of the stopper member 55 and the axis of the supply rod 52 cannot be accurately pursued.

  The present invention has been provided to solve the above-described problems, and accurately determines the relative position between the part temporarily locked in the temporary fixing chamber and the supply rod, and the axis and parts of the supply rod. An object of the present invention is to provide a component supply device that can be matched with the axis.

According to the first aspect of the present invention, there is provided a temporary holding chamber of a component communicating with a supply pipe in which a component supply passage is formed, and an advancing / retracting operation type for feeding the component temporarily locked in the temporary fixing chamber to a target location. In the component supply apparatus of the type provided with the supply rod, the temporary stop chamber is formed in the stop block member, the stop reference surface of the component formed on a part of the inner wall forming the temporary stop chamber, and the stop block member The formed guide hole of the supply rod is set in a predetermined relative positional relationship so that the axis of the supply rod and the axis of the part coincide with each other, and the stop block member has a cut surface formed on the head body. The component supply apparatus is characterized in that it is coupled to the head main body in close contact with the inner surface of the notch, and the supply pipe is coupled to the head main body .

  The reference stop surface of the part formed on a part of the inner wall forming the temporary stop chamber and the guide hole of the supply rod formed in the stop block member are aligned with the axis of the supply rod and the part axis. , A predetermined relative positional relationship is set. In other words, a stop reference surface for parts and a guide hole for the supply rod are formed in a single stop block member. Thus, since the stop reference plane and the guide hole are formed in a single member, the relative position between the position of the stop reference plane and the axis of the guide hole can be accurately obtained.

  For example, when machining the stop reference surface and the guide hole with a machine tool, first process the stop reference surface, then determine the axial center position of the guide hole using the stop reference surface as the reference surface, and drill the hole. Perform processing and finishing. Alternatively, the guide hole can be drilled first, and the stop reference plane can be obtained based on the axis of the guide hole.

  Since the stop reference surface to be manufactured with high accuracy and the guide hole are formed in the stop block member which is a single member in this way, the above-mentioned relative position can be accurately pursued and one stop block member can be provided. Since it is assembled as a component in the component supply device, the production of the device is simplified, which is advantageous in terms of productivity and cost.

It is the side view of the whole apparatus, and sectional drawing of the principal part. It is a perspective view of a stop block member, or a sectional view of an important section. It is the side view of the whole apparatus, and the perspective view of a head main body. It is a perspective view which shows the modification of a stop block member. It is sectional drawing which shows the case of a different component. It is sectional drawing of a prior art example.

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

  1 to 4 show a first embodiment of the present invention.

  First, components will be described.

  The parts to be supplied in the present invention include various kinds such as a projection nut, a perforated shaft part with a flange, and a part with a protrusion. The parts in this example belong to perforated parts with flanges.

  It is shown in FIG. 1 (E). The iron part is denoted by reference numeral 1, and a cylindrical plate 3 is concentrically integrated with a circular flat flange 2 and a through hole 4 is formed at the center. Each component configuration of the apparatus described below corresponds to the part shape shown in FIG.

  Next, the overall configuration of the component supply apparatus will be described.

FIG. 1A is a side view of the component supply apparatus 100, and although not shown, a supply pipe 5 extending from a parts feeder or a straight feeder is joined to the head body 6. The head main body 6 has a feed base member 7 as a main member and an auxiliary base member 8 integrated with the member 7, so that both the members 7 and 8 are substantially inverted L-shaped. They are combined. A supply pipe 5 extending from a parts feeder or a straight feeder is coupled to the lower side of the auxiliary base member 8 by bolting or the like. Note that the shape of the head body 6 varies depending on the size and shape of the feed base member 7 and the auxiliary base member 8.

  Since the component is composed of the flange 2 and the cylinder 3 as described above, a component supply passage 11 suitable for the component is formed. The component supply passage 11 includes a wide flange passage 12 through which the flange 2 passes and a cylindrical passage 13 extending downward from the center of the flange passage 12. The width of the cylindrical passage 13 is narrower than the width of the flange passage 12, thereby forming elongated sliding surfaces 14 on both sides of the flange passage 12.

Such a so-called T-shaped passage space is formed by the flange passage passage 12 and the cylinder passage passage 13, and the lower surface of the flange 2 of the component 1 slides on the sliding surface 14, and the cylinder 3 passes through the cylinder passage passage 13. It has come to pass.
That is, the component 1 is transferred in a suspended state.

  Next, the stop block member will be described.

  The stop block member 15 is made of a stainless steel block material having a substantially rectangular parallelepiped shape. A notch 10 for incorporating the stop block member 15 is formed below the feed base member 7. A stop block member 15 is fitted in the space formed by the notch 10. The outer surface of the stop block member 15 is in close contact with the inner surface of the notch 10. Thus, in order to integrate the stop block member 15 into the head body 6, a fixing bolt 16 that passes through the stop block member 15 and is screwed into the feed base member 7 is used.

  As shown in FIGS. 1 (D), 2 and 3 (B), the notch 10 forms a planar vertical surface 10A and a planar horizontal surface 10B corresponding to the ceiling surface. The planar upper surface 15B and the planar rear surface 15A of the stop block member 15 are brought into close contact with these surfaces 10A and 10B. Since the stop block member 15 can be integrated with the head main body 6 only by such simple surface contact, the stop block member 15 can be easily attached to the head main body 6. And since it is said surface contact | adherence, the relative position of the stop block member 15 and the head main body 6 can be set correctly. In addition, due to the surface contact, the attachment strength of the stop block member 15 can be easily improved.

  A temporary fixing chamber 17 is formed on one side of the lower surface of the stop block member 15. The temporary stop chamber 17 is provided with an inlet opening 18 and an outlet opening 19, the inlet opening 18 communicates with the component supply passage 11, and the outlet opening 19 opens to the advance side of the supply rod 20. .

  The supply rod 20 includes a guide rod 22 inserted into the through hole 4 of the component 1, a sliding rod 23 having a larger diameter than the guide rod 22, and a pressure formed at the boundary between the guide rod 22 and the sliding rod 23. It has a surface 24. The sliding rod 23 is inserted into the guide hole 25 in a state of sliding on the inner surface of the guide hole 25 opened in the stop block member 15. A passage hole 26 is opened in the feed base member 7, and the supply rod 20 passes therethrough. A sliding large diameter portion 27 is provided in the middle of the sliding rod 23, and this also slides on the inner surface of the passage hole 26. The guide rod 22, the sliding rod 23, the sliding large diameter portion 27 and the like formed on the supply rod 20 have a circular cross section.

  An air cylinder 28 is fixed to the upper end of the feed base member 7, and its piston rod 29 is coupled to the sliding large diameter portion 27. Each axis of the piston rod 29, the sliding large diameter portion 27, the sliding rod 23, and the guide rod 22 is coaxial with the axis OO. Further, the axis of the guide hole 25 and the through hole 26 are also coaxial with the axis OO.

  A part of the inner wall forming the temporary fixing chamber 17 serves as a stop reference surface 30 for the component 1. Since the flange 2 is circular, the stop reference surface 30 existing on the extension direction side of the component supply passage 11 is an arc surface as shown in FIGS. 2 (A) and 2 (C). The center of the arc of the arc surface is coaxial with the axis OO. Reference numeral 31 denotes a ceiling surface of the temporary fixing chamber 17 where a guide hole 25 is opened. The size of the arc of the stop reference surface 30 is a size that allows the outer periphery of the flange 2 to be snugly received, and is actually slightly larger than the diameter of the flange 2.

  As a method of forming the temporary fixing chamber 17 in the stop block member 15, general machining is employed. First, the space of the temporary fixing chamber 17 is cut, and then a stop reference surface 30 that is a circular arc surface is formed. A guide hole 25 is opened at a position coaxial with the arc of the stop reference surface 30. Therefore, the axis of the arc of the stop reference surface 30 and the axis of the guide hole 25 are coaxial with the axis OO as a common axis.

  As shown in FIG. 1D, the component 1 that has entered the temporary fixing chamber 17 is received by the stop reference surface 30 and is also in close contact with the ceiling surface 31. For this purpose, a suction means is employed for the stop block member 15. As the suction means, various devices such as a device that uses suction air and a device that uses magnetic force can be adopted.

  The magnet arrangement will be described with reference to FIG. 2. The magnet 33 is a permanent magnet, and two cylindrical ones are employed. As shown in FIG. 2C, the arrangement location of the two magnets 33 is a symmetrical position with respect to the entry direction line of the part 1 passing through the center of the arc of the stop reference plane 30. As shown in (B) and (D), the position is separated from the ceiling surface 31. The magnet 33 is embedded in the stop block member 15 at the above-described location. This embedding is performed by inserting the magnet 33 into an insertion hole opened from the outside, closing the lid from the outside, and finishing by welding.

  Next, parts supply locations will be described.

  There are various parts 1 to be supplied such as a guide pin of an electric resistance welding electrode and an insertion hole of the part 1. Here, it is the latter insertion hole. A plate-like counterpart part 35 is fixed on the base 34 by a clamp mechanism (not shown) or the like, and an insertion hole 36 opened there is a target location for supply. The insertion hole 36 is also coaxial with the axis OO.

  When the component 1 is transferred at high speed, there is a possibility that the stop reference surface 30 may be depressed due to the collision of the flange 2 when the mass of the component 1 is large. When there is such a fear, it is necessary to temporarily stop the component 1 before the temporary fixing chamber 17. For this purpose, as shown in FIG. 3A, a restriction pin 38 that is advanced and retracted by the air cylinder 37 is provided. The part 1 is received by the restriction pin 38 that has entered the part supply passage 11 and temporarily stopped, and then the restriction pin 38 is retracted to supply the part 1 to the temporary holding chamber 17 at a low speed.

  FIG. 4 is a perspective view showing the temporary fixing chamber 17 when the component 1 is a square projection nut. The stop reference plane in this case is three planes 39 that receive the front surface and both lateral sides of the nut. The stop reference surface 39 and the guide hole 25 are set in a predetermined relative positional relationship so that the axis of the supply rod 20 and the screw hole axis of the projection nut coincide.

  Next, the operation of this apparatus will be described.

  The parts 1 sent out from the parts feeder or the straight feeder pass through the parts supply passage 11 and enter the temporary fixing chamber 17. At this time, the magnet 33 is attracted and the outer peripheral edge of the flange 2 is received by the stop reference surface 30, and the flange 2 comes into close contact with the ceiling surface 31, so that the component 1 stops at a position coaxial with the axis OO. Thereafter, when the supply rod 20 advances, the guide rod 22 enters the through hole 4. When the supply rod 20 further advances, the pressing surface 24 comes into close contact with the upper surface of the flange 2, the component 1 is pushed out from the outlet opening 19 against the attractive force of the magnet 33, and the cylinder 3 is inserted into the insertion hole. 36 is inserted. The advancing speed of the supply rod 20 is faster than the falling speed of the component 1, and this prevents the component 1 from separating from the pressing surface 24.

  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 above-described advance / retreat operation of the supply rod can be easily performed by a generally adopted control method. A predetermined operation can be ensured by combining an air switching valve that operates with a signal from the control device or the sequence circuit, a sensor that emits a signal at a predetermined position of the air cylinder, and transmits the signal to the control device.

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

  The reference stop surfaces 30 and 39 of the component 1 formed on a part of the inner wall forming the temporary fixing chamber 17 and the guide hole 25 of the supply rod 20 formed in the stop block member 15 are connected to the axis of the supply rod 20 and the component. A predetermined relative positional relationship is set so that one axis line is matched. In other words, the stop reference surface 30 of the component 1 and the guide hole 25 of the sliding rod 23 that is a supply rod are formed in the single stop block member 15. As described above, since the stop reference surface 30 and the guide hole 25 are formed in a single member, the relative position between the position of the stop reference surface 30 and the axis of the guide hole 25 can be accurately obtained.

  For example, when the stop reference surfaces 30 and 39 and the guide hole 25 are machined with a machine tool, the stop reference surfaces 30 and 39 are first processed, and then the guide is made with the stop reference surfaces 30 and 39 as a reference surface. The axial center position of the hole 25 is obtained, and drilling or finishing is performed. Alternatively, it is also possible to first perform the drilling of the guide hole 25 and obtain the stop reference surfaces 30 and 39 based on the axis of the guide hole 25.

  Since the stop reference surfaces 30 and 39 to be manufactured with high accuracy and the guide hole 25 are formed in the stop block member 15 which is a single member, the above relative position can be accurately pursued and the stop is stopped. Since the block member 15 is assembled to the component supply apparatus 100 as one component, the manufacture of the apparatus is simplified, which is advantageous in terms of productivity and cost.

  A planar vertical surface 10A and a planar horizontal surface 10B corresponding to the ceiling surface are formed, and the planar upper surface 15B of the stop block member 15 and the planar rear surface 15A are in close contact with these surfaces 10A and 10B. . Since the stop block member 15 can be integrated with the head main body 6 only by such simple surface contact, the stop block member 15 can be easily attached to the head main body 6. And since it is said surface contact | adherence, the relative position of the stop block member 15 and the head main body 6 can be set correctly. In addition, due to the surface contact, the attachment strength of the stop block member 15 can be easily improved.

  FIG. 5 shows a second embodiment of the present invention.

  In the second embodiment, the shape of the component 1 is changed, and a protrusion 41 is formed at the center of the circular member 40. A receiving hole 42 is provided in the lower end surface of the sliding rod 23, and a magnet 43 is fitted in the back thereof. 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.

  When the sliding rod 23 advances, the protrusion 41 relatively enters the receiving hole 42 and is held by the magnet 43. Thereafter, the component 1 is fed to the target location. Other operations are the same as those in the first embodiment.

  As described above, according to the apparatus of the present invention, the relative position between the component temporarily held in the temporary fixing chamber and the supply rod is accurately determined so that the axis of the supply rod and the axis of the component match. can do. Therefore, it can be used in a wide range of industrial fields, such as an automobile body assembly process and a home appliance sheet metal assembly process.

DESCRIPTION OF SYMBOLS 1 Parts, projection nut 2 Flange 3 Cylinder 4 Through-hole 5 Supply pipe 6 Head main body 10 Notch part 11 Parts supply path 12 Flange passage 13 Cylindrical passage 14 Sliding surface 15 Stop block member 17 Temporary stop chamber 20 Supply rod 22 Guide Rod 23 Slide rod 24 Press surface 25 Guide hole 30 Stop reference surface 33 Magnet 39 Plane 100 Component supply device OO Axis line

Claims (1)

A temporary holding chamber of a component communicating with a supply pipe in which a component supply passage is formed, and a forward and backward operation type supply rod that feeds the component temporarily locked in the temporary fixing chamber to a target location. In the component supply apparatus , the temporary stop chamber is formed in a stop block member, a reference stop surface of a component formed in a part of an inner wall forming the temporary stop chamber, and a guide of the supply rod formed in the stop block member The hole is set in a predetermined relative positional relationship so that the axis of the supply rod and the axis of the part match, and the stop block member has its outer surface closely attached to the inner surface of the notch formed in the head body. The component supply device, wherein the component supply device is coupled to the head main body in a state, and the supply pipe is coupled to the head main body .

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