JPH0616323U - Screw feeder - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a screw supply device capable of smoothly and reliably transferring a screw from a shooter to a separator without stagnation and improving the operation efficiency of the device. [Structure] A head of a screw W is mounted and has a linear guide hole 3 through which the male screw portion is inserted, and the screw is sequentially slid downward along the guide hole 3 according to gravity and transferred. And a screw W that has been pushed to the end of the shooter 2 and pushed out from the shooter 2.
And a shooter cover 9 arranged above the shooter 2 with a proper distance from the top surface of the head of the screw W. To do. Then, in order to smoothly transfer the screw W transferred to the end of the shooter 2 to the separator 5, the separator 5 is energized and excited so as to act as an electromagnet, and when the screw W is conveyed to the screw take-out position, the separator W The energization and excitation of the above is cut off and the screw W is taken out from the separator 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to a screw feeder having a shooter for sequentially sliding a screw downwardly in accordance with gravity and transferring the screw.

[0002]

[Prior art]

 This type of screw supply device generally comprises a shooter 2 and a separator 5, the main part of which is shown schematically in FIG.

The shooter 2 has a linear guide hole 3 on which the head of the screw W is mounted and which inserts the male screw part thereof, and the screw is sequentially slanted downward along the guide hole 3 in accordance with gravity. The screw W is slid and transferred, and every time the screw W is supplied to the upper side thereof, the screw W located at the foremost end (lowermost part) is pushed out to the separator 5 side one after another.

The separator 5 has a semi-circular or semi-elliptical withdrawal opening 6 slightly larger than the external shape of the external thread of the screw W on which the screw W transferred to the end of the shooter 2 and pushed is mounted. The screw W transferred to the extraction opening 6 is conveyed to the screw extraction position set on the front side of the drawing (FIG. 3).

In addition to the above configuration, a screw take-out means (here, an electric screwdriver) 7 for pulling up the screw W conveyed to the screw take-out position by the separator 5 from the separator 5 and screwing the screw W into a required place, and a shooter 2 are provided. On the upper side, there is additionally provided a shoter cover 9 which is arranged with an appropriate distance from the top surface of the head of the screw W and adjusted by an adjusting screw or the like (not shown).

[0006]

[Problems to be solved by the device]

 However, in the screw supply device 50 as described above, if the distance between the top surface of the head of the screw W and the shooter cover 9 is excessive, the heads of the screws W to be sequentially transferred will be different. In the vicinity of the lowermost part, they overlap with each other and are not pushed out to the separator 5 side, and the transfer of the screw W becomes stagnant. On the other hand, if the distance between the top surface of the head of the screw W and the shooter cover 9 is too small, the screw W becomes clogged and smooth transfer cannot be achieved.

Therefore, in the conventional screw supply device 50, it is required to adjust the height position of the shooter cover 9 with respect to the shooter 2 frequently and strictly, and it is troublesome to operate the device. In addition, there is a problem that the operating efficiency of the device is likely to be significantly reduced.

In view of the above point, the present invention provides a screw supply device capable of smoothly and reliably transferring the screws from the shooter to the separator without stagnation, and improving the operation efficiency of the device. The purpose is to provide.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, the screw supply device according to the present invention has a linear guide hole through which the head of the screw is mounted and which inserts the male screw part, and the screw is sequentially installed along the guide hole. A screw supply device including a shooter that is continuously slid downwardly and transferred, and a separator that transfers the screw transferred to the end of the shooter and extruded from the shooter to a screw take-out position. In order to smoothly transfer the screw transferred to the end of the shooter to the separator, the separator is energized so that the separator works as an electromagnet and the screw is conveyed to the screw take-out position. The feature is that the excitation is cut off.

[0010]

[Action]

 In the screw feeder according to the present invention configured as described above, the separator is made to act as an electromagnet, so that the screws sequentially transferred to the end portion of the shooter are magnetically attracted to the separator and forced. Therefore, the screws can be transferred from the shooter to the separator smoothly and reliably. Therefore, the operating efficiency of the equipment is improved and fully automatic operation is possible.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show the main part of an embodiment of the screw feeding device according to the present invention, and FIG. 3 shows the overall construction of the screw feeding device.

In the figure, the screw supply device 1 of the present embodiment is provided with a shooter 2, a separator 5, a screw take-out means 7, and a shooter cover 9 as in the conventional device described above.

As shown in FIGS. 1 and 2, the shooter 2 has a linear guide hole 3 on which the head of the screw W is mounted and which inserts the male screw portion, and the linear guide hole 3 The screw W is slid and slid downward in sequence in accordance with gravity, and the separator 5 slides on a rail 14 extending in a direction orthogonal to the transfer direction of the shooter 2. It has a semi-elliptical extraction opening 6 which is arranged so that it can be transferred to the end of the shooter 2 and extracts the screw W pushed out from the shooter 2, and is transferred to this extraction opening 6. The screw W is conveyed to the screw take-out position indicated by the one-dot chain line in FIG.

On the other hand, the screw take-out means 7 is adapted to pull up the screw W conveyed to the above-mentioned screw take-out position from the separator 5, and the shooter cover 9 is provided on the upper side of the shooter 2 in the same manner as the conventional one. It is arranged at an appropriate distance from the top surface of the head of the car, but its lower end ends on the front side of the horizontal terminal part 2a located at the bottom of the shooter 2.

In addition to the above configuration, in the present embodiment, a bracket 15 is attached to the lower part of the shooter 2 with a screw or the like, and the separator 5 is seen from one end of the bracket 15, that is, the end of the shooter 2. The magnet 20 is fixed by an adhesive or the like to a portion located diagonally above the side.

Further, a coil 13 is attached to the separator 5, and when the coil 13 is energized, the separator 5 is excited and acts as an electromagnet.

In this case, a sensor 11 for detecting whether or not the screw W has been transferred from the shooter 2 to the separator 5 and conveyed to the screw take-out position is arranged at a portion facing the screw take-out position. When the sensor 11 detects that the screw W has been conveyed to the screw take-out position, the coil 13 is de-energized to release the separator 5 from the excited state, and then the screw is taken out. The means 7 is lowered to adsorb the screw W 1, and is taken out so as to be pulled up and conveyed to a predetermined place.

In the screw supply device 1 of the present embodiment having such a configuration, in addition to the magnetic force of the magnet 20 arranged obliquely above the terminal end portion of the shooter 2, the separator 5 is made to act as an electromagnet. By doing so, the screw W sequentially transferred to the end portion of the shooter 2 is magnetically attracted to the separator 5 side and is forcibly pulled out, so that the transfer of the screw from the shooter to the separator is extremely smooth and reliable. Will be done. Therefore, the operating efficiency of the equipment is improved and fully automatic operation is possible.

In this embodiment, the magnet 20 is not always necessary, but the presence of the magnet 20 increases the certainty of the transfer of the screw W as compared with the case where the screw W is attracted only by the magnetic force of the separator 5. . Further, even if the mounting position of the magnet 20 is displaced, the separator 5 is energized and excited, so that the displacement is absorbed and the transfer defect of the screw W is avoided.

[0020]

[Effect of device]

 As is clear from the above description, according to the screw supply device of the present invention, since the separator 5 is made to function as an electromagnet, the screw is smoothly and reliably transferred from the shooter to the separator without stagnation. It can be transferred, the operation efficiency of the device can be improved, and the excellent effect that automatic operation can be promoted can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view showing a main part of an embodiment of a screw supply device according to the present invention.

FIG. 2 is a plan view showing a main part of an embodiment of a screw supply device according to the present invention.

FIG. 3 is a perspective view showing the overall configuration of an embodiment of a connector according to the present invention.

FIG. 4 is a side view showing a main part of an example of a conventional screw supply device.

[Explanation of symbols]

 1 Screw Supply Device 2 Shooter 3 Guide Hole 5 Separator 7 Screw Extraction Means 9 Shooter Cover 13 Coil 15 Bracket W Screw

Claims (1)

[Scope of utility model registration request] 1. A screw head has a linear guide hole on which a head portion of the screw is mounted and which inserts a male screw portion thereof, and the screw is sequentially and slid downwardly along the guide hole to be transferred. And a separator that conveys the screw that has been pushed to the end of the shooter and has been pushed out of the shooter to the screw take-out position. In order to smoothly transfer to and from the separator, the separator is energized to act as an electromagnet, and when the screw is conveyed to the screw take-out position, the energization of the separator is cut off. apparatus.