JP2018167353A - Screw member take-out mechanism of screw member feeder - Google Patents

Abstract

To provide a screw member take-out mechanism capable of supplying stably to an automatic assembly line or to an assembly worker, a screw member in the individually separated state, even when using a screw member having any kind of shape.SOLUTION: A screw member take-out mechanism 9, which is a mechanism for taking out a screw member from a screw member feeder, includes a storage groove 12 capable of storing one screw member, in which a side face on the screw member feeder side is an open surface 121, a moving mechanism 1 for moving the storage groove 12 from a first position to a second position, and an erection mechanism 2 for erecting a shank of the screw member stored in the storage groove 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mechanism for taking out a screw member from a screw member supply device that continuously supplies a screw member such as a screw, a bolt, a rivet, or a nail having a head portion and a shaft portion. The present invention relates to a screw member take-out mechanism for taking out each piece and providing it to an automatic assembly line or an assembly operator.

  Various screw member supply devices have been proposed in order to continuously supply screw members one by one to an automatic assembly line or an assembly worker that performs screw tightening work members. The screw member supply device usually includes a housing portion that houses the screw member, a guide rail portion that sequentially conveys the screw member to the outside of the device, a vibration mechanism that vibrates the guide rail portion, and from the housing portion to the guide rail portion. A supply mechanism for supplying the screw member and a supply mechanism for supplying the screw member to the accommodation portion are provided, and the accommodation portion, the guide rail portion, the vibration mechanism, the supply mechanism, and the supply mechanism are all disposed in the housing. The terminal end side of the guide rail protrudes from the side of the housing to the outside of the device in order to transport the screw member to the outside of the device, and is provided to the automatic assembly line or assembly operator with the screw members aligned. In order to do this, it is connected to a screw member take-out mechanism provided integrally or independently with the apparatus.

  2. Description of the Related Art Conventionally, as a take-out mechanism for providing a screw member from a screw member supply device to an automatic assembly line or an assembly operator, for example, as shown in Patent Document 1, to guide the tip of a bit to a screw member take-out portion There is known a configuration in which the guide member is provided, and the screw member stopped at the terminal end side of the guide rail portion is engaged with the driver bit to take out the screw member with the driver bit. The take-out mechanism with such a configuration can be suitably used to arrange and deliver a large number of screw members one by one, but incorporates a screw or washer with a large head diameter, etc. When used for specially shaped screws, the screw heads and washers adjacent to each other interfere with each other, and the alignment of the screws often breaks at the end of the guide rail. However, there is a disadvantage that the screw member cannot be properly taken out by the driver bit.

  For this reason, in recent years, as shown in Patent Document 2, for example, a screw cutting mechanism that cuts out screws one by one from a screw feeder, which is provided with a rotating disk that rotates horizontally and is provided on the outer periphery of the rotating disk A cutting mechanism has been proposed in which a screw is housed in an open concave portion to stabilize the posture of the screw and supply the screw to the driver bit.

JP-A-8-155758 JP 2006-013596 A

  However, in the screw cutting mechanism described in Patent Document 2, since the concave portion of the rotating disk is open to the discharge port side, a screw member having a shape incorporating a spring washer (hereinafter referred to as “screw with spring washer”). Is stored in the recess, the lower surface of the screw head is not parallel to the surface of the rotating disk due to the torsion of the spring washer, so the screw shaft tilts toward the outlet, and the screw member There is a problem of not standing upright. In this case, since the normal rotation of the rotating disk is hindered, the screw member housed in the recess cannot be properly moved to the supply hole for the driver bit, and the screw member on the terminal end side of the guide rail portion. As a result, the device itself may break down and the automatic assembly line may be interrupted.

  The present invention has been made on the basis of the circumstances as described above. Even if a screw member having any shape is used, the screw members are separated one by one to provide an automatic assembly line or an assembly operator. It is an object to provide a screw member take-out mechanism that can be stably supplied.

  In order to solve the above problems, the present invention is a screw member take-out mechanism for taking out a screw member from a screw member supply device, which can accommodate a single screw member, and has a side surface on the screw member supply device side opened. A screw including a receiving groove that is a surface, a moving mechanism that moves the receiving groove from a first position to a second position, and an erecting mechanism that erects a shaft portion of a screw member received in the receiving groove A member take-out mechanism is provided (Invention 1).

  According to this invention (Invention 1), the screw member housed in the housing groove at the first position can be moved to the second position, and the shaft portion of the screw member housed in the housing groove can be erect. Even if a screw member having any shape is used, the screw members can be separated one by one from the screw member supply device and stably supplied to the automatic assembly line or the assembly operator.

  In the present invention, the screw member is not only a fixing member generally called a screw, which is composed of a shaft portion spirally engraved with a screw thread and a head having a diameter larger than that of the shaft portion, but also bolts, rivets, nails, etc. It is a concept including all parts having a circular or polygonal head in plan view and a rod-shaped shaft portion extending from the center of the head.

  In the said invention (invention 1), it is preferable that the said erecting mechanism has a movable member which can shield the said open surface (invention 2).

  According to this invention (Invention 2), for example, when a screw with a spring washer is used, even if the shaft portion of the screw is tilted toward the opening surface side of the housing groove, the opening surface of the housing groove is moved by the movable member. By shielding, it becomes possible to erect the screw member accommodated in the accommodation groove.

  In the said invention (invention 1 and 2), it is preferable to drive the said moving mechanism and the said erecting mechanism with one drive source (invention 3).

  According to this invention (invention 3), it is possible to erect the shaft portion of the accommodated screw member until the screw member accommodated in the accommodation groove at the first position is moved to the second position. In addition, since only one drive source is required, cost and space can be reduced as compared with the case where the moving mechanism and the erecting mechanism are driven by different drive sources.

  In the said invention (invention 3), the detection part which detects that the screw member was accommodated in the said accommodation groove, The control part which drives the said drive source, when the said detection part detects accommodation of the said screw member, (Invention 4).

  According to this invention (invention 4), the detection unit detects whether one screw member is housed in the housing groove in the first position, and based on this detection data, for example, the guide rail of the screw member supply device When one screw member is not normally received in the receiving groove in the first position due to the alignment of the screw members being broken on the terminal end side of the part, the control unit causes the moving mechanism and the erecting mechanism to Since the drive can be stopped, it is possible to prevent a failure of the screw member supply device itself and an interruption of the automatic assembly line due to this.

  According to the screw member take-out mechanism of the present invention, the screw member housed in the housing groove at the first position can be moved to the second position, and the shaft portion of the screw member housed in the housing groove can be erected. Therefore, regardless of the shape of the screw member, it is possible to separate the screw members one by one from the screw member supply device and stably supply them to the automatic assembly line or the assembly operator. .

1A and 1B are schematic perspective views showing a screw member take-out mechanism according to an embodiment of the present invention, in which FIG. 1A shows a state in which the accommodation groove is in the first position, and FIG. Shows the state. FIG. 2 is an enlarged view showing an accommodation groove in the screw member take-out mechanism of FIG. 3A is an explanatory view seen from the side direction showing the operation of the screw member take-out mechanism of FIG. 1, and (a) is housed in the housing groove while the screw with spring washer is tilted to the open surface side at the first position. (B) is a state in which the screw with spring washer accommodated in the accommodation groove is moving from the first position to the second position, and (c) is a state in which the screw with spring washer accommodated in the accommodation groove is a movable member. The figure shows a state in which it is upright and moved to the second position. FIG. 3B is an explanatory view seen from the top direction showing the operation of the screw member take-out mechanism of FIG. 1, and (a) is housed in the housing groove while the screw with spring washer is tilted to the open surface side in the first position. (B) is a state in which the screw with spring washer accommodated in the accommodation groove is moving from the first position to the second position, and (c) is a state in which the screw with spring washer accommodated in the accommodation groove is a movable member. The figure shows a state in which it is upright and moved to the second position. FIG. 4A is an explanatory view showing the operation of a screw member take-out mechanism according to another embodiment of the present invention, and FIG. 4B shows the movable member in FIG. 4A in the Y-axis direction. The case where it has a certain thickness is shown. FIG. 5 is an explanatory view showing the operation of the screw member take-out mechanism according to still another embodiment of the present invention.

  Hereinafter, a screw member extraction mechanism of a screw member supply device according to an embodiment of the present invention will be described with reference to the drawings as appropriate. The embodiment described below is for facilitating the understanding of the present invention, and does not limit the present invention.

  The screw member take-out mechanism 9 according to the present embodiment is a mechanism for taking out a screw member from a screw member supply device (not shown), and as shown in FIG. 1, a moving mechanism 1, an erecting mechanism 2, A driving source (not shown) for driving the moving mechanism 1 and the erecting mechanism 2 and a detection unit (not shown) are mainly provided. In the following description, as shown in FIG. 1-5, the direction in which the housing groove 12 is separated from the screw member supply device is the Y-axis direction, and the horizontal direction perpendicular thereto is the X-axis direction, the X-axis direction, and the Y-axis direction. The perpendicular direction orthogonal to the Z-axis direction. In the present embodiment, as the screw member, a screw member having a shape in which a spring washer and a washer having a larger diameter than the spring washer are incorporated on the outside thereof is illustrated.

<Movement mechanism>
The moving mechanism 1 moves the screw member housed in the housing groove 12 at the first position to the second position. The specific positional relationship between the first position and the second position is not particularly limited as long as the screw member accommodated in the accommodation groove 12 is separated from the screw member supply device, for example, The second position may be located at a predetermined distance in the Y-axis direction or the Z-axis direction with respect to the first position, or may be located at a predetermined distance in the oblique direction. Good.

  In the present embodiment, the moving mechanism 1 is referred to as a support base 13 and an inclined surface (hereinafter referred to as an inclination surface A) that is integrally attached to the support base 13 and has an inclination (hereinafter referred to as an inclination A). ) And a single screw member, and has a housing groove 12 whose side surface of the screw member supply device is an open surface 121, and is slidable along the inclined surface B. And a sliding member 11. The specific configuration for slidably providing the sliding member 11 with respect to the support member 14 is not particularly limited. For example, the sliding member 11 is slid in a linear guide groove provided on the surface (inclined surface B) of the support member 14. A configuration in which slide protrusions provided on the lower surface of the moving member 11 are slidably fitted may be employed.

  The support base 13 is formed by cutting the upper part of the substantially cubic box-shaped member with a predetermined inclination (inclination A) with respect to the XY plane. The support member 14 is attached to the cut end surface. The inclination A is not particularly limited, but is preferably 30 degrees or more and 45 degrees or less with respect to the XY plane from the viewpoint of driving efficiency.

  The sliding member 11 has a horizontal upper end surface on which the accommodation groove 12 is formed and a lower end surface parallel to the inclined surface B. The lower end surface is slidably in contact with the surface of the support member 14. ing.

  The housing groove 12 is provided in the −Z-axis direction (vertically downward) with respect to the upper end surface of the sliding member 11, and the cross-section of the XY plane is in the −Y-axis direction (screw member supply device side). It has a substantially U shape that opens. The length dimension of the accommodation groove 12 in the Z-axis direction is not particularly limited as long as one screw member supplied from the terminal end side of the guide rail portion of the screw member supply device can be accommodated.

  As shown in FIG. 2, the housing groove 12 has a configuration in which the length dimension y in the Y-axis direction is substantially equal to the length dimension x in the X-axis direction when the open surface 121 is shielded by the movable member 21 described later. It is. The length dimension y in the Y-axis direction and the length dimension x in the X-axis direction are not particularly limited as long as they are larger than the shaft part diameter of one screw member and smaller than the head diameter. In the present invention, the “head diameter” of the screw member is when the screw member is a screw with a spring washer and the diameter of the spring washer or the washer incorporated together with the spring washer is larger than the head diameter. Is a concept including a spring washer diameter or a washer diameter incorporated together with a spring washer. With the housing groove 12 having such a configuration, the shaft portion of one screw member supplied from the guide rail portion of the screw member supply device is housed in the housing groove 12, and the lower surface of the head portion. Is held in the receiving groove 12 by being caught on the upper end surface of the sliding member 11.

  The material of the support member 14 and the sliding member 11 is not particularly limited as long as it does not hinder the movement of the sliding member 11 from the first position to the second position in the support member 14. In view of the above, a synthetic resin having a smooth surface is preferably used.

  As shown in FIGS. 3A and 3B, the moving mechanism 1 slides by moving the sliding member 11 along the inclined surface B of the support member 14 provided at an inclination A by a driving source (not shown). Since the screw member housed in the housing groove 12 provided in the member 11 is moved from the first position to the second position, the screw member is securely received with less horizontal movement than in the case of using a horizontally provided support member. Since one screw member accommodated in the groove 12 can be separated from the screw member supply device, the screw member take-out mechanism 9 as a whole can have a compact configuration.

<Erecting mechanism>
The erecting mechanism 2 erects the shaft portion of the screw member housed in the housing groove 12 at the first position, and the housing groove so as to erect the shaft portion of the screw member housed in the housing groove 12. The movable member 21 is capable of shielding the 12 open surfaces 121. Although the specific configuration of the movable member 21 is not particularly limited, in the present embodiment, the movable member 21 is provided so as to be slidable in the X-axis direction in order to shield the open surface 121.

  The movable member 21 is a substantially rectangular parallelepiped plate-shaped member in which the X-axis direction is the longitudinal direction and the Z-axis direction is the short direction. The length dimension of the movable member 21 in the longitudinal direction is not particularly limited as long as the open surface 121 is not shielded at the first position and the open surface 121 can be shielded at the second position. The length dimension of the movable member 21 in the short direction is not particularly limited as long as it has a length that allows the shaft portion of the screw member housed in the housing groove 12 to be erected. It is preferable that the length is at least the length of the shaft portion of the screw member. In the present embodiment, the movable member 21 is configured to shield the open surface 121 by sliding in the X-axis direction.

  3A and 3B, the erecting mechanism 2 shields the screw member accommodated in the accommodation groove 12 by shielding the open surface 121 of the accommodation groove 12 by sliding movement of the movable member 21 in the X-axis direction. For example, when a screw with a spring washer is used, even if the shaft portion of the screw is tilted to the open surface 121 side, the open surface 121 is shielded by the movable member 21 so that the housing groove 12 The accommodated screw member can be surely erected.

  Further, as shown in FIG. 4A, the movable member 21 has a shape in which the tip is cut at a predetermined inclination with respect to the XZ plane, so that the cross section of the tip XY plane has an acute angle. It may be comprised so that. When a screw with a spring washer is used, the spring washer and the washer interfere with each other on the terminal end side of the guide rail portion of the screw member supply device, so that one screw and the guide rail portion received in the receiving groove 12 It can happen that the other screws on the top cannot be properly separated and erect. Since the movable member 21 has such a configuration, it is possible to cut between one screw housed in the housing groove 12 and another screw on the guide rail portion with a sharp tip surface. Even when a screw member having a simple shape is used, it is possible to reliably separate and erect one screw.

  As shown in FIG. 4B, the movable member 21 having the above-described configuration may have a length dimension in the Y-axis direction that is about the same as the head diameter of the screw. With such a configuration, when the open surface 121 is shielded by the movable member 21, the row of screws on the guide rail portion is pushed back in the direction opposite to the conveying direction. Even if the screw alignment state is broken on the terminal end side of the guide rail part due to interference with each other, one screw accommodated in the accommodating groove 12 and the other screw on the guide rail part are securely connected. Can be separated.

  Furthermore, as shown in FIG. 5, the movable member 21 having the above configuration may be configured by a pair of members and shield the open surface 121 from the left and right sides in the X-axis direction. With such a configuration, a force is equally applied to the shaft portion of the screw member housed in the housing groove 12 from the left and right, so that the screw member can be more reliably separated and erected. The movable member 21 having such a configuration may have a length dimension in the Y-axis direction that is approximately the same as the head diameter of the screw member, as in the case shown in FIG.

  The material of the movable member 21 is not particularly limited as long as it can erect the screw member housed in the housing groove 12, but a synthetic resin or metal is used from the viewpoint of a lightweight surface or a rigid surface. Preferably used.

<Drive source>
The drive source drives the moving mechanism 1 and the erecting mechanism 2. Specifically, the drive source moves the sliding member 11 slidably provided on the support member 14 from the first position to the second position along the inclined surface B, and slides in the X-axis direction. The movable member 21 provided so as to be freely moved is moved so as to shield the open surface 121.

  When the moving mechanism 1 is driven, the screw member housed in the housing groove 12 provided in the sliding member 11 moves from the first position to the second position. Further, when the erecting mechanism 2 is driven, the screw member housed in the housing groove 12 in the first position erects until it moves to the second position.

  The drive source is configured such that the erecting mechanism 2 is driven in conjunction with the moving mechanism 1 when a detection unit described later detects that the screw member is received in the receiving groove 12. Specifically, the drive source includes a drive motor and an interlocking member, and the erecting mechanism 2 is driven in conjunction with the moving mechanism 1 via the interlocking member during operation of the drive motor. The installation location of the drive motor is not particularly limited. However, since the entire mechanism has a compact configuration, it is preferably installed in the support base 13. With such a configuration, the separation and upright of the single screw member accommodated in the accommodation groove 12 can be reliably interlocked and only one drive source is required. The cost can be reduced as compared to the case where 1 and the erecting mechanism 2 are driven by different drive sources.

  The specific configuration of the interlocking member is not particularly limited, and various known members can be employed. For example, a groove cam or a spring can be used. When the interlocking member is a groove cam, the cam follower provided separately moves in the cam groove of the groove cam during the operation of the drive motor, thereby converting the movement along the inclined surface of the support member 14 into a horizontal movement. By doing so, the movable member 21 moves in the X-axis direction in conjunction with the movement of the sliding member 11 along the inclined surface of the support member 14. Further, when the interlocking member is a spring, the movement of the sliding member 11 along the inclined surface of the support member 14 during the operation of the driving motor causes the end of the movable member 21 to the −X axis direction. When the separately attached wire is pushed out against the urging force of the spring, the movable member 21 moves in the X-axis direction.

<Detector>
The detecting unit detects that the screw member is received in the receiving groove 12 at the first position. Specifically, the detection unit detects whether one screw member is accommodated in the accommodation groove 12 in the first position, and outputs this detection data to a control unit (not shown). Based on this detection data, the control unit, for example, normally loses one of the accommodation grooves 12 in the receiving groove 12 in the first position because the alignment state of the screw members collapses on the terminal end side of the guide rail portion of the screw member supply device. When the screw member is not accommodated, the drive mechanism is stopped by stopping the drive motor, thereby adjusting the alignment state of the screw member on the terminal end side of the guide rail portion. It is also possible to prevent the failure of the screw member supply device itself and the interruption of the automatic assembly line.

  The installation position of the detection unit is not particularly limited as long as it is configured so that it can be detected that one screw member is accommodated in the accommodation groove 12 in the first position. The housing groove 12 may be provided so as to surround the housing groove 12.

  The embodiment described above is described for facilitating understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in each of the embodiments is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  The screw member take-out mechanism of the screw member supply device of the present invention separates the screw members one by one, regardless of the shape of the screw member, and is stable to the automatic assembly line or the assembly operator. Since it can be supplied, its industrial applicability is extremely large.

DESCRIPTION OF SYMBOLS 9 Screw member taking-out mechanism 1 Movement mechanism 11 Sliding member 12 Accommodating groove 121 Open surface 13 Support stand 14 Support member 2 Erecting mechanism 21 Movable member

Claims (4)

A screw member takeout mechanism for taking out a screw member from a screw member supply device,
An accommodation groove that can accommodate one screw member, and the side surface on the screw member supply device side is an open surface;
A moving mechanism for moving the receiving groove from the first position to the second position;
A screw member take-out mechanism comprising: an erecting mechanism that erects a shaft portion of the screw member housed in the housing groove.   The screw member take-out mechanism according to claim 1, wherein the erecting mechanism has a movable member capable of shielding the open surface.   The screw member take-out mechanism according to claim 1 or 2, wherein the moving mechanism and the erecting mechanism are driven by a single drive source. A detecting unit for detecting that the screw member is received in the receiving groove;
The screw member take-out mechanism according to claim 3, further comprising a control unit that drives the drive source when the detection unit detects housing of the screw member.

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