JP4332815B2 - Outflow control device for small parts - Google Patents

Description

  The present invention is in the field of supplying small parts such as projection nuts and bolts, and is applied to, for example, a guide shooter installed between a small parts storage box and a target location.

  It is known that a guide shooter protrudes from a storage box for small parts, and this guide shooter extends to a bowl or the like of a parts feeder to which small parts are supplied. Such a technique is described in JP-A-6-316318.

  Also, a product that applies a braking force to the product moving on the guide shooter by a magnetic action, for example, a non-magnetic material is interposed in the middle of the guide shooter, and magnets are provided upstream and downstream of the non-magnetic material. It is known that when a polarity is applied and the product is in a state of straddling a non-magnetic material, magnetic lines of force pass through the product and the product is attracted to the guide shooter. This is described in Japanese Patent Publication No. 52-12473.

JP-A-6-316318 Japanese Patent Publication No.52-12473

  In the prior art as described above, when a non-magnetic material is attached to the guide shooter, the non-magnetic material has an appropriate width dimension for the part, and the surface of the non-magnetic material is smooth with the surface of the guide shooter. Must be in a continuous state. The above-mentioned appropriate width dimension is set to a large width dimension of the non-magnetic material so that a magnetic field line having a sufficient length can pass through the size of the part, as set forth as a technical problem of the present invention. This means that the suction force to the parts is strengthened.

  Such a way of thinking about the width dimension of the non-magnetic material is not considered in the above-mentioned Patent Document 1. Further, when the part is not attracted by a magnetic force, a smooth sliding that does not catch the part is necessary. Neither Patent Document 1 nor Patent Document 2 considers such smooth sliding of parts.

  Furthermore, in the method disclosed in Patent Document 1, the braking area of the guide shooter is not sufficiently expanded to the vicinity of the end in the method disclosed in Patent Document 1 by sucking the component in the entire width of the guide shooter and applying the braking force to the component sliding. There's a problem.

  The present invention has been provided to solve the above-described problems, and provides a small component outflow control device that can apply a sufficient braking force to a component and can smoothly slide the component. The purpose is to provide.

  The present invention has been provided to solve the above-described problems. The invention according to claim 1 is directed to a guide shooter made of a magnetic material protruding from a small component storage box, and the small component slides. Non-magnetic metal material formed between a sliding plate and a vertical wall plate provided on both sides of the sliding plate, and between a leading end portion of the sliding plate and a magnetic material suction member disposed in the width direction of the sliding plate The connecting member formed in the above is attached, the width of the connecting member in the moving direction of the accessory part is set to a predetermined size according to the size of the accessory part, and the suction member and the connecting member are welded to each other. Is inserted into a square notch provided at the end of the sliding plate and welded to the sliding plate, and the auxiliary member is welded to the back surface of the sliding plate at a predetermined interval from the suction member, and the suction member and the auxiliary member are electromagnets. Close to the connecting member. It is the outflow control device for small parts, characterized in that the suction region of the small parts is formed by the surface and the surface of the sliding plate of the suction member in the.

  A connecting member made of a non-magnetic metal material is attached between the tip of the sliding plate and a magnetic material-made suction member arranged in the width direction of the sliding plate. Therefore, since welding joining between the sliding plate and the connecting member and welding joining between the connecting member and the suction member are possible, the suction member can be firmly coupled to the tip portion of the sliding plate via the connecting member. With such a welded structure, a smooth sliding surface can be formed in a state where the sliding plate, connecting member, and suction member are continuous, so that small parts are not caught in the vicinity of the connecting member and smooth supply of parts is realized. To do.

  In addition, since the iron core of the electromagnet is in close contact with the attraction member and the auxiliary member, it is required to make the flow of magnetic lines of force efficient by keeping the close contact tightness. For this reason, it is necessary to maintain a high coupling rigidity between the suction member and the auxiliary member with respect to the sliding plate, but it is difficult to firmly connect the suction member with a connecting member interposed at the tip of the sliding plate. It is. However, in the present invention, since the three members such as the sliding plate, the connecting member, and the suction member as described above can be integrated with a welded structure, the above-described problem of joint rigidity can be solved.

  The width of the connecting member in the moving direction of the small part is set to a predetermined dimension according to the size of the small part. Therefore, the width of the connecting member viewed in the moving direction of the accessory part can be set larger than the size of the accessory part, and accordingly, the length of the magnetic field lines passing through the accessory part can be made as long as possible. . By doing so, a strong suction force acts on the small parts. In such a phenomenon, the suction area of the accessory component is formed by the surface of the suction member and the surface of the sliding plate in the vicinity of the connection member. By securing as wide as possible, a strong suction force can be secured.

  According to a second aspect of the present invention, the width dimension of the connecting member is such that when the small part contacts both the surface of the suction member and the surface of the sliding plate, the magnetic lines of force pass through the small part as long as possible. The small component outflow control device according to claim 1, wherein

  Therefore, as described above, a strong suction force can be secured by securing the suction area as wide as possible.

  The invention according to claim 3 is the outflow control device for small parts according to claim 1 or 2, wherein the connecting member joined to the suction member is arranged in the longitudinal direction and the thickness direction of the suction member. is there.

  For this reason, the connecting member is arranged along the longitudinal direction of the suction member, that is, the width direction of the guide shooter, and the thickness direction of the suction member, that is, the parts transfer direction of the guide shooter. It can be secured over a wide range until it reaches the wallboard. Therefore, the small parts sucked into the suction area are sucked over the entire width of the guide shooter so as to come into contact with the vertical wall plate of the guide shooter.

  In particular, as the number of parts restrained in this way increases one after another, small parts are attracted to each other while being entangled with each other, and are expanded to form a group over the entire suction area. Further expansion is suppressed by contacting the inner surface of the vertical wall plate. That is, since both ends of the group of sucked parts are limited by the vertical wall plates, a large number of small parts are in a state in which the guide shooter is integrated in the transverse direction between the vertical wall plates.

It is a vertical side view which shows the Example of this invention. It is a top view which shows the front-end | tip part of a guide shooter. It is a side view of a prior art example. It is a perspective view of a guide shooter. It is a partial vertical side view of a guide shooter and a storage box. It is sectional drawing which shows arrangement | positioning of support rubber | gum. It is sectional drawing which shows the part of a stylus. It is a top view, a sectional view, and a perspective view of a structure for assembling a suction member and a connecting member to a guide shooter. It is a figure which shows the welding part of the structure of FIG.

  Next, an embodiment for implementing the outflow control device for small parts of the present invention will be described.

  3 to 7 are a side view, a perspective view, a cross-sectional view, and the like of a device in which the parts feeder 3 and the hopper device 4 are combined. The structure for braking components according to the present invention is provided in a guide shooter 10 described later. Equipped.

  On the base 2 having the legs 1, a hopper device 4 that is made to be a vibration type similarly to the vibration type parts feeder 3 is fixed. The parts feeder 3 has a vibrating part 5 and a circular bowl 6, and is adapted to apply a combined vibration in the circumferential direction and the vertical direction to the bowl 6. The tube 7 is extended.

  The hopper device 4 will be described. A component storage box 8 is supported by a support column 9 that is firmly raised on the base 2, and a guide shooter 10 is installed to replenish the bowl 6 with components from the storage box 8. It is. As apparent from FIG. 4, the guide shooter 10 has a U-shaped cross section that is released upward, and is arranged with the vertical wall plates 10a standing on both sides. And as shown in FIG. 4, the front-end | tip part of the vertical wall board 10a has the space | interval of both the vertical wall boards 10a toward a front-end | tip.

  The guide shooter 10 does not have a rigid coupling structure with the storage box 8 or the support column 9, and only the guide shooter 10 can vibrate. That is, as shown in FIGS. 5 and 6, a gap 11 is formed between the storage box 8 and the guide shooter 10, and the guide shooter 10 itself is elastically held by the support rubber 12.

  The support rubber 12 is installed between the bracket 13 welded to the support column 9 and the guide shooter 10 so that only the guide shooter 10 can vibrate. In order to vibrate the guide shooter 10, an electromagnetic vibrator 14 is installed. This is firmly fixed on a support base 15 as shown in FIG. 3, and its output shaft 16 is connected to the guide shooter 10 via a bracket 17.

  The bottom plate 18 of the storage box 8 is inclined as is apparent from FIGS. 3 and 5, and a part outlet 19 is provided at the lower part of the container box 8 so as to prevent excessive parts from flowing out. A plate 20 is provided. The restricting plate 20 is a flexible property made of a material such as vinyl chloride, and a part passage gap 22 is provided between the restricting plate 20 and the sliding plate (bottom plate) 21 of the guide shooter.

  In order to adjust the vertical position of the restriction plate 20, a vertical hole 24 is formed in the front wall plate 23 of the storage box 8, and the restriction plate 20 is tightened with a wing nut 26 through a bolt 25. It has become. Reference numeral 27 denotes a presser plate.

  FIG. 7 shows a stylus 28 entering the bowl 6, with the lower end of the haptic 28 extending to near the bottom plate of the bowl 6 and the upper end of the haptic 28 coupled to a detection switch 29. is there.

  When a required amount of parts (for example, a projection nut) is contained in the bowl 6, the parts are flowing in the circumferential direction on the bottom plate due to the vibration of the bowl 6. As a result, the inclination switch is kept in an inclined state, so that the detection switch 29 does not output an electrical signal indicating that there is a shortage of parts.

  FIG. 4 is a three-dimensional view showing the relationship between the storage box 8 and the guide shooter 10.

  When the parts in the bowl 6 are exhausted, the stylus 28 takes a position where it hangs down, and a signal is sent from the detection switch 29 indicating that the parts are insufficient. The vibrator 14 is actuated by this signal, the guide shooter 10 is forced to vibrate, and the vibration is transmitted from the delivery port 19 to the part in contact with the sliding plate 21, and the part pushes the regulating plate 20 open. However, it slides down on the sliding plate 21.

  Next, a braking device for parts mounted on the guide shooter will be described.

  1 and 2 are a sectional view and a plan view of the braking device. Components having the same functions as those described in FIGS. 3 to 7 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The braking device is installed to prevent extra parts from being sent out from the guide shooter.

  An iron suction member 30 is welded to the end of the sliding plate 21 via a connecting member 40. The suction member 30 is formed of a thick plate-like elongated member, and is arranged in a direction orthogonal to the longitudinal direction of the sliding plate 21, that is, the transfer direction of small parts, as shown in FIG. An end surface of the suction member 30 is a surface 31 of the suction member 30.

  The small component in this embodiment is a square projection nut, which is indicated by reference numeral 33. Below, it may only describe as a nut.

  The connecting member 40 made of, for example, stainless steel, which is a nonmagnetic material, is disposed between the end of the sliding plate 21 and the suction member 30. The end portion of the sliding plate 21 and the connection member 40 are welded at a welded portion 41 indicated by reference numeral 41. Further, the connection member 40 and the suction member 30 are welded at a welding portion 42 indicated by reference numeral 42.

  Since the surfaces of the sliding plate 21, the connecting member 40, and the suction member 30 are smoothly continuous, the welded portions 41 and 42 on the surface side are smoothly finished with a raised portion by welding or the like. Furthermore, a smoother surface can be obtained by applying a highly abrasion-resistant coating thereon.

  An iron auxiliary member 43 having the same shape as the suction member 30 is welded to the back surface of the sliding plate 21 in parallel with the suction member 30. The distance between the members 30 and 43 is set to a predetermined dimension that matches the electromagnet 44 disposed therein. An electromagnet 44 is attached between the members 30 and 43, and the iron core 45 is in close contact with the inner surfaces of the suction member 30 and the auxiliary member 43 as shown in the figure.

  The electromagnet 44 is sandwiched between the inner surface of the attracting member 30 and the inner surface of the auxiliary member 43, and the end surface of the iron core 45 of the electromagnet 44 is in close contact with the inner surfaces. In order to ensure this close contact, the distance between the suction member 30 and the auxiliary member 43 exactly matches the length of the iron core 45, and the bolt 46 penetrating the lower part of the suction member 30 and the auxiliary member 43 is connected to the suction member 30. Screwed into. The bolt 46 is tightened to ensure the close contact of the iron core 45.

  When the electromagnet 44 is excited with a direct current, a line of magnetic force is formed from one N-pole or S-pole to the other S-pole or N-pole. This line of magnetic force passes from the end of the iron core 45 through the suction member 30, the sliding plate 21, and the auxiliary member 43 toward the other side of the iron core. In FIG. 1B, the magnetic force lines 47 are indicated by two-dot chain lines.

  However, since the connection member 40 made of the non-magnetic metal material is disposed, the magnetic force lines 47 are blocked at the connection member 40. Therefore, when the iron projection nut 33 moves on the sliding plate 21 and contacts the surface 31 of the suction member 30 and the surface 34 of the sliding plate 21, the magnetic lines 47 pass through the projection nut 33. As a result, the nut 33 is attracted to both surfaces 31 and 34.

  As described above, the suction region 48 of the nut 33 is formed by the surface 31 of the suction member 30 and the surface 34 of the sliding plate 21 in the vicinity of the connection member 40. The suction region 48 is a region surrounded by a two-dot chain line in FIG.

  As shown in FIG. 2, the connecting member 40 joined to the suction member 30 is arranged in the longitudinal direction of the suction member 30, that is, the width direction of the guide shooter 10, and in the thickness direction, that is, the component conveying direction of the guide shooter 10. Yes. For this purpose, the connecting member 40 is formed in a U-shape that opens to the distal end side of the guide shooter 10.

  On the other hand, as shown in FIGS. 2 and 4, the vertical wall plates 10 a on both sides of the guide shooter 10 are gradually narrowed because the distal end side of the guide shooter 10 is bent inward. Thus, the part where the width | variety is narrow is the narrow part 10b.

  As shown in FIG. 2B, the sliding plate 21 is extended also between the U-shaped connecting member 40 and the narrow width portion 10b, and the suction region 48 is expanded to the middle of the narrow width portion 10b. Yes. A portion where the sliding plate 21 extends is indicated by reference numeral 49.

  FIGS. 1C and 1D show a comparison between the narrow L1 and the wide L2 of the connecting member 40. When the connecting member 40 has a small width L1, the magnetic field lines 47 pass through a part of the nut 33. You can't get strong suction just by doing. On the other hand, when L2 is large, the magnetic force lines 47 pass over almost the entire area of the nut 33, so that a strong attractive force can be secured. Therefore, the width dimension of the connecting member 40 is selected so that a predetermined suction force can be obtained according to the size of the component, that is, the projection nut 33.

  On the other hand, when the energization of the electromagnet 44 is cut off and the attractive magnetic force disappears, and at the same time, the vibrator 14 starts operating, the braked nut 33 flows out from the guide shooter 10 and passes through the gap. 22 also flows out continuously.

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

  A connecting member 40 made of a nonmagnetic metal material is attached between the tip of the sliding plate 21 and the magnetic material suction member 30 disposed in the width direction of the sliding plate 21. Therefore, since welding joining between the sliding plate 21 and the connecting member 40 and welding joining between the connecting member 40 and the suction member 30 are possible, the suction member 30 is firmly attached to the tip portion of the sliding plate 21 via the connecting member 40. Can be combined. With such a welded structure, a smooth sliding surface can be formed in a state in which the sliding plate 21, the connecting member 40, and the suction member 30 are continuous. Therefore, the projection nut 33 is not caught in the vicinity of the connecting member 40, and smooth. Parts supply is realized.

  Further, since the iron core 45 of the electromagnet 44 is in close contact with the attraction member 30 and the auxiliary member 43, it is required to make the flow of the magnetic force lines 47 efficient by keeping the close contact tightness. . Therefore, it is necessary to maintain high coupling rigidity between the suction member 30 and the auxiliary member 43 with respect to the sliding plate 21, but the suction member 30 is made strong by interposing the connecting member 40 at the tip portion of the sliding plate 21. Difficult to bond to. However, in the present invention, since the three members such as the sliding plate 21, the connecting member 40, and the suction member 30 as described above can be integrated by a welding structure, the above-described problem of the coupling rigidity can be solved.

  The width of the connecting member 40 in the movement direction of the projection nut 33 is set to a predetermined dimension according to the size of the projection nut 33. Therefore, the width of the connecting member 40 seen in the moving direction of the nut 33 can be set larger than the size of the nut 33, and accordingly, the length of the magnetic lines 47 passing through the nut 33 is made as long as possible. Can do.

  By doing so, a strong suction force acts on the projection nut 33. Such a phenomenon is because the suction region 48 of the nut 33 is formed by the surface 31 of the suction member 30 and the surface 34 of the sliding plate 21 in the vicinity of the connection member 40, so that the width dimension of the connection member 40 is increased. By setting and securing the suction area 48 as wide as possible, a strong suction force can be secured.

  The width L2 of the connecting member 40 is such that when the projection nut 33 is in contact with both the surface 31 of the suction member 30 and the surface 34 of the sliding plate 21, the magnetic lines of force 47 in the nut 33 as much as possible. It is set to pass long.

  Therefore, as described above, a strong suction force can be secured by securing the suction region 48 as wide as possible.

  The connection member 40 joined to the suction member 30 is disposed over the longitudinal direction and the thickness direction of the suction member 30.

  For this reason, the connecting member 40 is disposed along the longitudinal direction of the suction member 30, that is, the width direction of the guide shooter 10, and the thickness direction of the suction member 30, that is, the component transfer direction of the guide shooter 10. It can be ensured over a wide range until 48 reaches the narrow portion 10b of the guide shooter 10. Therefore, the projection nut 33 sucked into the suction region 48 is sucked over the entire width of the guide shooter so as to come into contact with the narrow width portion 10 b of the guide shooter 10.

  In particular, when the projection nuts 33 thus restrained increase one after another, the nuts 33 are attracted and entangled with each other, and expanded so as to form a group in the entire suction region 48. Both ends thereof are in contact with the inner surface of the vertical wall plate 10a (narrow width portion 10b), and further expansion is suppressed. That is, since both ends of the group of sucked nuts 33 are restricted by the vertical wall plates 10a, a large number of nuts 33 are integrated in the transverse direction of the guide shooter 10 between the two vertical wall plates 10a.

  The restricting plate 20 serves to prevent the projection nut 33 from flowing out when the vibrator 14 is stopped and to restrict the nut 33 from flowing out excessively when the vibrator is operated. Even when the vibrator is stopped, a phenomenon of sliding down on the sliding plate 21 as if it spills out of the passage gap 22 occurs.

  Such a phenomenon occurs when both the parts feeder 3 and the hopper device 4 are mounted on the single base 2, and the vibration of the parts feeder 3 is transmitted to the hopper device 4 through the base 2. The guide shooter 10 will vibrate, inducing inadvertent component outflow. Therefore, it is preferable to lower the restricting plate 20 to reduce the passage gap 22 or increase the hardness of the restricting plate 20, but in this case, the amplitude and frequency of the guide shooter 10 must be increased to vibrate considerably intensely. Therefore, the regulating plate 20 cannot be pushed open.

  It must be particularly important to generate a strong noise from the parts on the guide shooter 10 by increasing the vibration of the vibrator 14, while a high noise is generated from the storage box 8 itself. .

  In the present invention, the above-described problems are solved by the configuration and operation described above. That is, inadvertent leakage of the nut 33 is prevented, and the noise problem is solved.

  8 and 9 show a second embodiment.

  This embodiment relates to the attachment structure of the connection member 40. As shown in FIG. 8, the connecting member 40 is integrated with the suction member 30 in advance, and is fitted into a square notch 50 provided at the end of the sliding plate 21 and welded.

  The welding in this embodiment is MIG welding using a SUS wire rod as a consumable electrode. Other welding techniques can also be used.

  As shown in FIG. 8 (A), the connection member 40 is welded at two locations, that is, welds 51a and 51b. The cross section (B-B cross section) is shown in FIG. The welded portions 51a and 51b are welded at positions separated from each other as shown in the figure, and the central portion is not welded. FIG. 3C is a perspective view showing a state where the connection member 40 is welded to the suction member 30.

  FIG. 9 is a view showing a state in which a preliminary assembly as shown in FIG. 8C is welded to the sliding plate 21 of the guide shooter 10. The preliminary assembly is inserted into the notch 50 in the direction of the arrow 52 shown in FIG. 8A, and both ends thereof are welded. This welding range is a welding region indicated by reference numerals 53a and 53b in FIG. That is, in the welding regions 53a and 53b, the end portion of the surface 31 of the suction member 30, the connection member 40, and the vicinity of the end portion of the sliding plate 21 are welded, and the welding regions 53a and 53b are in the longitudinal direction of the guide shooter 10, It is in an elongated state along the moving direction of the nut 33.

  When such welding is performed, as shown in FIG. 9 (B), the built-up portion 54 is formed, and therefore, as shown in FIG. So that there is no hindrance to sliding. Further, in order to increase the welding rigidity of the suction member 30, it is desirable to further weld from below as shown in FIG. This welded portion is indicated by reference numeral 55, and the three members of the suction member 30, the connecting member 40, and the vertical wall plate 10a (narrow width portion 10b) are welded together.

  Further, as shown in FIG. 9A, the electromagnet 44 is in close contact with a portion of the suction member 30 that is not affected by welding distortion or the like.

  Except for the above configuration, the configuration is the same as that of the previous embodiment, and the same reference numerals are used for the portions.

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

  In this structure, a preliminary assembly in which the suction member 30 and the connection member 40 are welded is inserted into the square cutout 50. Therefore, smoothness between the surface 31 of the suction member 30 and the surface of the connection member 40 can be reliably formed, and smooth sliding of the projection nut 33 can be ensured. Furthermore, since the preliminary assembly is inserted into the square notch 50, the assembling work can be simplified.

  Further, since the welded portions of the suction member 30 and the connection member 40 are the welded portions 51a and 51b separated into the left and right, the welding distortion generated in the connection member 40 can be minimized to a level that does not cause any actual harm.

  In the welded regions 53a and 53b, the end of the surface 31 of the suction member 30, the connection member 40, and the vicinity of the end of the sliding plate 21 are welded, and the welded regions 53a and 53b are in the longitudinal direction of the guide shooter 10, that is, the nut 33. It is in an elongated state along the moving direction. Therefore, the suction member 30 is not easily displaced with respect to the sliding plate 21, which is suitable as a structure that establishes the close contact of the iron core 45 of the electromagnet 44. That is, the lower end portion of the suction member 30 shown in FIG. 1 is not displaced.

  Except for the above-mentioned operation and effect, it is the same as that of the previous embodiment.

  As described above, according to the present invention, the suction force to the small parts can be surely obtained, so that the outflow control of various parts can be performed and can be utilized in a wide industrial field.

10 Guide Shooter 10a Vertical Wall Plate 21 Sliding Plate 30 Suction Member 31 Surface 33 Projection Nut 34 Surface 40 Connection Member 43 Auxiliary Member 44 Electromagnet 45 Iron Core 47 Magnetic Field Line 48 Suction Area

Claims (3)

  A guide shooter made of a magnetic material protruding from a small component storage box is constituted by a sliding plate on which the small component slides and vertical wall plates provided on both sides of the sliding plate. A connecting member made of a non-magnetic metal material is attached between the magnetic material and the suction member made of a magnetic material, and the width of the connecting member in the moving direction of the small part depends on the size of the small part. The pre-assembled product, which has a predetermined size and is welded to the suction member and the connecting member, is fitted into a square notch provided at the end of the sliding plate and welded to the sliding plate, and sucked to the back surface of the sliding plate. The auxiliary member is welded to the member at a predetermined interval, the iron core of the electromagnet is brought into close contact with the suction member and the auxiliary member, and a suction region for small parts is formed by the surface of the suction member and the surface of the sliding plate in the vicinity of the connection member. What Outflow control device for small parts, characterized.   The width dimension of the connecting member is set so that the magnetic lines of force pass through the accessory part as long as possible when the accessory part contacts both the surface of the suction member and the surface of the sliding plate. The small component outflow control device described.   The outflow control device for small parts according to claim 1 or 2, wherein the connection member joined to the suction member is disposed over a longitudinal direction and a thickness direction of the suction member.

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