JP5272250B2 - Passage control section for oversized parts - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a passage regulating portion of an excessive component, which regulates the passage of an abnormal component according to the moving track of the component. <P>SOLUTION: A regulating protrusion 20 making the excessive component form an abnormal moving track is provided so as to project out of a sliding surface 18 of the component. The regulating protrusion 20 is provided with a tilting surface 21 gradually increasing its height toward a component transfer direction 24. A regulating wall 25 receiving part of the excessive component when the excessive component is transferred along the tilting surface 21, is disposed at a place generally opposite to the regulating protrusion 20. Then, the tip upper part of the component reaching abnormal height on the tilting surface 21 is received by the regulating wall 25. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a passage restricting portion that restricts the passage of an oversized component when the oversized component is mixed in a component that slides in a passage.

  Japanese Patent No. 3416770 describes that when the front and back relationship of the projection nut is reversed, the passage of the nut in an abnormal direction is restricted. The structure of the restricting portion is shown in FIG. It is described that welding projections 2 projecting in the thickness direction and the lateral direction of the nut are formed at the four corners of the square projection nut 1, and the passage of the nut 1 in an abnormal direction is prevented in the gate-type passage restricting member 3. ing. In the following description, the projection nut may be simply expressed as a nut.

  The passage regulating member 3 is provided with a non-regulating portion 4 having a wide passage width that allows the welding projection 2 to pass therethrough and a regulation portion 5 having a narrow passage width that does not allow the welding projection 2 to pass therethrough. As shown in FIG. 5, in the case of so-called normal exposure where the welding projection 2 is on the lower side, the portion of the welding projection 2 passes through the non-regulating portion 4. On the other hand, in the case of a so-called reverse facing abnormality in which the welding projection 2 is on the upper side, the welding projection 2 is caught by the restricting portion 5 and the passage is stopped.

Japanese Patent No. 3416770

  The passage restricting member 3 as described in the above-mentioned patent document restrains the nut 1 in an abnormal direction by the structure / dimension only in the width direction, which is the passage width. If the welding protrusion 2 does not protrude in the lateral direction of the nut 1 and protrudes only in the thickness direction, the welding restricting member 3 can pass through the passage restricting member 3 regardless of the orientation of the front or back. For this reason, if the sheet is sent out with an abnormal back-out, normal welding becomes impossible. Furthermore, since it is necessary to provide the non-regulation part 4 with a wide channel | path width and the regulation part 5 with a narrow channel | path width | variety, there exists a problem of taking time for the process.

  The present invention has been provided to solve the above-described problems, and an object thereof is to provide a passage restricting portion for an oversized part that restricts the passage of an abnormal part according to the movement trajectory of the part.

According to the first aspect of the present invention, the restricting projection that causes the excessive component to form an abnormal movement locus protrudes from the sliding surface of the component, and the height of the restricting projection gradually increases in the component transfer direction. An inclined surface that is raised is provided, and a restriction wall that receives a part of the oversized part when the oversized part is transferred along the inclined surface is disposed at a position substantially opposite to the restriction projection, and is provided on both sides of the sliding surface. A lid member is fixed to a body portion having a lateral inner surface standing upright, the restriction wall is formed on the lid member, and the part is formed with a screw hole in the center of a square-shaped body, and is formed on one side of the body. A projection nut having at least four welding projections projecting in the thickness direction of the main body at four corners, wherein the regulation projection is disposed at a central portion viewed in the width direction of the sliding surface, and the welding projection is disposed on the left and right sides thereof. Passage space The regulating wall is arranged in a state substantially orthogonal to the transfer direction of the component, and the component is in the form of an excessive component when the welding protrusion is on the upper side. In addition, the over-part passage restricting portion is characterized in that a state in which the welding protrusion is on the lower side is a form as a normal part .

  When a part that is excessively large in the direction perpendicular to the sliding surface of the part, that is, in the height direction of the part, is transferred along the sliding surface, the part moves along the inclined surface, and the upper part of the tip of the part moves. The trajectory passes through an abnormally high part. Since such a movement trajectory is drawn, the upper end portion of the component is received by the restriction wall. Therefore, the part with an abnormally high height is blocked by the waiting restriction wall, so that the part with an abnormal dimension is reliably prevented from passing. The oversized parts are in a state where they are received by the regulation wall, and are not restrained in a state where they are wedged into a narrow part, so that the restrained parts are returned with a small force in the direction opposite to the moving direction. It is easy to remove.

  As described above, since the regulation protrusion is provided with the inclined surface whose height gradually increases in the component transfer direction, it is possible to reliably restrain an abnormally high component and to increase the height direction. When the component having the protrusion formed thereon is transferred, if the protrusion is directed upward, the protrusion moves through a portion where the movement locus of the protrusion is abnormally high, so that the protrusion is received by the restriction wall. On the other hand, if the projection is downward, the height of the movement trajectory at the top of the tip of the component becomes a normal height position by passing the projection portion away from the inclined surface. Accordingly, the upper end of the tip of the component is normally transferred without being received by the restriction wall. As described above, the passage of parts in an abnormal direction can be reliably regulated by the front and back sides of the parts with protrusions.

A lid member is fixed to a main body having a lateral inner surface standing on both sides of the sliding surface, and the regulation wall is formed on the lid member .

  By raising the lateral inner surface on both sides of the sliding surface, the cross-sectional shape of the main body portion is substantially U-shaped, and the restriction wall is formed on the lid member attached so as to seal the open portion of the main body portion Therefore, the passage restricting portion can be configured with a simple structure. In addition, since the regulating wall is formed on the lid member, the relative position between the movement path of the oversized part and the regulating wall can be obtained appropriately by adjusting the mounting position of the lid member back and forth in the component transfer direction. Can do.

The regulation wall is arranged in a state substantially orthogonal to the component transfer direction .

  With such a configuration, the excessive parts are reliably received by the regulation wall.

According to a second aspect of the invention, an excessive part of the discharge cutting groove according to claim 1, characterized in that formed on the lid member to discharge towards the opposite to the transfer direction of the component excessive part being restrained to the restriction wall It is a passage regulation part.

  When removing an oversized part that is restrained by the restriction wall, an elongated tool is inserted into the discharge groove, and the oversized part is moved and moved in the direction opposite to the transfer direction so as to be removed. Since the excessive parts are pushed back by such an operation, the repair work is simplified. In addition, since the oversized part hits the regulation wall, the force when pushing back the oversized part is significantly reduced, and workability is improved.

It is a top view of a passage control part, a sectional view, and a three-dimensional view. It is sectional drawing which shows the control operation | movement of a passage control part. It is sectional drawing which shows the control state of another component. It is a three-dimensional view showing a component shape. It is sectional drawing which shows a prior art.

  Next, an embodiment for carrying out the excessive part passage restricting portion of the present invention will be described.

  1 to 3 show a first embodiment of the present invention.

  First, parts that are subject to passage restriction will be described.

  The component shown in FIG. 4A is an iron projection nut 5. In the nut 5, a screw hole 7 is formed at the center of a square-shaped main body 6, and welding protrusions 8 are formed at four corners on one side of the main body 6. The welding protrusion 8 protrudes in the thickness direction of the main body 6, that is, in the axial direction of the screw hole 7. However, the welding protrusion 8 may be of a type protruding in the thickness direction and the lateral direction of the nut 5 as shown in FIG. The main body 6 is square when viewed in a plan view, and has a front surface 9 and a back surface 10 (not shown in FIG. 4A).

  The dimensions of each part of the nut 5 are such that one side of the square is 12 mm, the thickness H1 of the main body 6 is 5.5 mm, the protrusion height H2 of the welding projection 8 is 1 mm, and the inner diameter of the screw hole 7 is 6 mm.

  Next, the passage restriction unit will be described.

  The entire passage restricting portion is indicated by reference numeral 12. The passage restricting portion 12 is arranged in the middle or end of the passage member 13. The passage member 13 is a U-shaped member and is welded before and after the passage restricting portion 12. Reference numeral 14 denotes a welded portion. This passage member 13 is employed at various locations for transferring the nut 5. For example, it is adopted in a parts passage of a parts feeder provided around a circular bowl to which a transfer vibration is applied, a parts supply path to an electric resistance welding machine, and the like.

  The passage restricting portion 12 is formed by welding a lid member 16 to a body portion 15 having a U-shaped cross section, and the passage space 17 is continuous with the passage space of the passage member 13. The bottom surface of the main body portion 15 is a sliding surface 18 for parts, and a lateral inner surface 19 is arranged in a standing state on both sides thereof. A restricting projection 20 is formed in a state protruding from the sliding surface 18, and an inclined surface 21 whose height gradually increases in the component transfer direction is provided on the restricting projection 20. The inclined surface 21 is smoothly continuous with the sliding surface 18, and is also continuously smoothly connected with the top surface 22 parallel to the sliding surface 18. And the control protrusion 20 is arrange | positioned in the center part seen in the width direction of the sliding surface 18, and the passage space 23 is formed in the right and left. The welding projection 8 passes through the passage space 23.

  The parts are transferred in the direction indicated by arrow 24. The transfer may be a system such as a vibratory parts feeder, or may be a system in which an inclined surface is lowered or blast air is blown.

  Here, the part to be regulated is the projection nut 5 shown in FIG. 4 (A), the normal orientation with the welding projection 8 on the lower side is the normal transfer posture, and the opposite is the reverse side. Abnormal transfer posture. As will be apparent from the description below, a state in which the welding protrusion 8 is on the upper side and the protruding height H2 protrudes is an excessive component. The portion of the protruding height H2 corresponds to a part of the excessive part. Moreover, the state in which the welding projection 8 is on the lower side and the height H2 does not protrude is a form as a normal part. Therefore, this embodiment discriminates the front and back of the nut 5 and prohibits the passage of the nut 5 in an abnormal direction.

  When the nut 5 is being transferred toward the arrow line 24, it is displaced upward along the inclined surface 21. The nut 5 is received by the regulation wall 25 when such a movement locus passes through an abnormally high portion. In other words, the welding protrusion 8 protrudes from the top end of the nut 5, and the welding protrusion 8 is received by the regulation wall 25. The restriction wall 25 is disposed at a position substantially opposite to the restriction protrusion 20, and is formed in a part of the lid member 16 here. Various structures can be adopted as the structure for forming the regulation wall 25. Here, a cut groove 26 is formed in the lid member 16, and the wall surface of the restriction wall 25 is formed in a direction perpendicular to the direction of the arrow 24, that is, in the width direction of the passage space 17. The wall surface of the restriction wall 25 is arranged in a state substantially orthogonal to the direction in which the nut 5 is transferred.

  A discharge groove 28 is formed in the lid member 16 to discharge the reverse-facing nut 5 restrained by the restriction wall 25 in the direction opposite to the transfer direction. The discharge kerf 28 is formed in a state extending from the vicinity of the kerf 26 along the center of the passage space 17 in the direction opposite to the transfer direction, and is open to the end of the lid member 16.

  Next, a state in which the passage of the nut is restricted will be described.

  The case of an oversized part with the nut 5 facing down will be described.

  FIG. 2 (A1) shows a case where the nut 5 has been transferred face down. And the A2 arrow line view of the figure is FIG. 2 (A2). When the transferred nut 5 moves along the inclined surface 21, as shown in the two-dot chain line, the welding projection 8 which is the upper end of the nut 5 draws a movement trajectory passing through an abnormally high portion. . As a result, the welding projection 8 enters the space of the kerf 26 and further advances, the front portion of the welding projection 8 abuts against the regulation wall 25. At this time, the surface 9 of the nut 5 rides on the rear end of the top surface 22 as shown in FIG.

  In such a state where passage of the nut 5 in an abnormal direction is prohibited, a rod-shaped tool is inserted from the discharge cut groove 28 and hooked on the nut 5 to move the tool in the direction opposite to the transfer direction. Since the nut 5 has only the front surface portion of the welding projection 8 abutting against the regulation wall 25, the force to push back in the opposite direction becomes very small, and the nut removing operation can be easily performed.

  The case of a normal part with the nut 5 turned up will be described.

  FIG. 2 (B1) shows a case where the nut 5 has been transferred face up. And the B2 arrow line view of the figure is FIG. 2 (B2). As shown in the two-dot chain line, when the transferred nut 5 moves along the inclined surface 21, the welding protrusions 8 on both sides pass through the passage space 23 and the tip of the back surface 10 slides on the inclined surface 21. Go. As described above, since the welding projection 8 passes through the passage space 23, the upper end of the nut 5 draws a movement trajectory passing through a portion having a normal height. As a result, the upper end of the nut 5 does not enter the space of the kerf 26 and passes without contacting the regulating wall 25.

  As shown in FIG. 2C, the passage restricting portion 12 can be erected. At this time, it is desirable that the permanent magnet 29 is attached to the back of the restricting protrusion 20 so that the nut 5 is in close contact with the restricting protrusion 20.

  Next, the case of different part shapes will be described.

  This is the case of the square-shaped block component 30 shown by the solid line in FIG. 4B, and has a length of 13 mm, a width of 13 mm, and a height H1 of 5 mm. Such a block component 30 is transferred as a normal component, but when an excessive component having the same vertical and horizontal dimensions and a height of H2 is mixed, the excessive component is prevented from passing. Here, H2 is 2 mm.

  As shown in FIG. 3, the regulating wall 25 here is not provided with the kerf 26 as described above, but is formed by the end face of the lid member 16. Accordingly, the discharge groove 28 is not provided here. In this example, the width of the restricting protrusion 20 may be formed over the entire width of the passage space 17.

  The operation in which the oversized part shown in the solid line hits the regulation wall 25 and the normal part passes as shown in the two-dot chain line is the same as the previous example. The other configuration is the same as that of the previous example including a portion not shown, and the same reference numerals are described for members having similar functions.

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

  When an abnormally excessive part 5 or 30 is transferred along the sliding surface 18 in a direction perpendicular to the sliding surface of the part, that is, in the height direction of the nut 5 or the block part 30, the part 5 or 30 is moved to the inclined surface. 21 and the movement locus of the upper end of the part 5 or 30 passes through an abnormally high portion. Since such a movement trajectory is drawn, the upper end of the part 5 or 30 is received by the restriction wall 25. Accordingly, since the part 5 or 30 having an abnormally high height is blocked by the waiting restriction wall 25, the part 5 or 30 having an abnormal size is reliably prevented from passing. The oversized parts are in a state where they are received by the regulating wall 25 and are not restrained in a state where they are wedged into a narrow part. Therefore, the restrained parts 5 or 30 are small in the direction opposite to the moving direction. It is easy to remove by force.

  In this way, since the regulation protrusion 20 is provided with the inclined surface 21 whose height gradually increases in the component transfer direction 24, the component 5 or 30 having an abnormally high height can be reliably restrained. In addition, when the projection nut 5 having the welding projection 8 formed in the height direction is transferred, if the welding projection 8 is upward, the movement trajectory of the projection portion passes through an abnormally high portion. The front surface portion of the projection 8 is received by the restriction wall 25. On the other hand, if the welding protrusion 8 is downward, the height of the movement locus of the upper end of the nut 5 becomes a normal height position by passing the protrusion through the passage space 23. Accordingly, the upper end of the nut 5 is normally transferred without being received by the restriction wall 25. As described above, the passage of the nut 5 in an abnormal direction can be reliably restricted by the front and back sides of the projection nut 5 with projections.

  A lid member 16 is fixed to a body portion 15 having a lateral inner surface 19 standing on both sides of the sliding surface 18, and the regulating wall 25 is formed on the lid member 16.

  By raising the lateral inner surface 19 on both sides of the sliding surface 18, the cross-sectional shape of the main body portion 15 becomes substantially U-shaped, and the restriction wall 25 is attached to the lid member 16 attached so as to seal the open portion of the main body portion 15. Therefore, the passage restricting portion 12 can be configured with a simple structure. Further, since the regulation wall 25 is formed on the lid member 16, the relative position between the movement locus of the excessive part and the regulation wall 25 can be adjusted by moving the attachment position of the lid member 16 back and forth in the transfer direction of the part 5. Can be obtained appropriately.

  The restriction wall 25 is arranged in a state substantially orthogonal to the transfer direction of the component 5 or 30.

  With such a configuration, excessive parts are reliably received by the restriction wall 25.

  A discharge groove 28 is formed in the lid member 16 for discharging an excessive part restrained by the restriction wall 25 in a direction opposite to the direction in which the nut 5 is transferred.

  When removing the excessive parts restrained by the restriction wall 25, an elongated tool is inserted into the discharge groove 28, and the reverse nut 5 is hooked to move in the direction opposite to the transfer direction and removed. . Since the back-facing nut 5 is pushed back by such an operation, the repair work is simplified. In addition, since the oversized part hits the regulation wall, the force when pushing back the oversized part is significantly reduced, and workability is improved.

  As described above, the present invention regulates the passage of abnormal parts in accordance with the movement trajectory of the parts. Therefore, in a wide industrial field such as a projection nut supply device in a car body welding process of an automobile or a sheet metal welding process of a home appliance. Available.

Reference Signs List 5 Projection nut 8 Welding projection 12 Passing restriction portion 15 Body portion 16 Cover member 17 Passing space 18 Sliding surface 19 Horizontal inner surface 20 Restricting projection 21 Inclined surface 22 Top surface 23 Passing space 25 Restricting wall 26 Cut groove 28 Discharge cut groove 30 Block parts

Claims (2)

A restricting projection that forms an abnormal movement trajectory on the excessive component is provided in a state of protruding from the sliding surface of the component, and the restricting projection is provided with an inclined surface whose height gradually increases in the transfer direction of the component, A restricting wall that receives a part of the oversized part when the oversized part is transferred along the inclined surface is disposed at a position substantially opposite to the restricting protrusion, and has a lateral inner surface that stands on both sides of the sliding surface. A lid member is fixed to the main body, the restriction wall is formed on the lid member, and the component has a screw hole formed at the center of a square-shaped main body, and at least the thickness of the main body at one corner of the main body. A projection nut in which a welding projection protruding in a direction is formed, wherein the regulation projection is arranged at a central portion viewed in the width direction of the sliding surface, and a passage space for the welding projection is formed on the left and right thereof , The regulations Wall Yes arranged in a state of being substantially perpendicular to the transport direction of the component, the component together with the state in which the welding projection is in the upper is in the form of and excessive component, the weld projection The over-part passage restricting portion characterized in that the state of the underside is a form as a normal part. Passage restricting portion of the excessive part of the stop has been that the excessive part of the component according to claim 1, wherein the discharge kerf for discharging towards the opposite is formed in the lid member to the transfer direction to the regulating wall.

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