JP2010163222A - Screw supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screw supply device rich in versatility usable for a screw of a wide range of a size, a shape and many kinds of the screws, capable of surely supplying the predetermined number of screws, formable as a strong structure by a relatively simple constitution, and easy even in maintenance. <P>SOLUTION: The screw supply device is provided by horizontally arranging a pair of arrangement rollers in parallel in an upper part of a storage part 2 for storing the screws. In the screw supply device, opposed spiral grooves of spiral shapes are formed on peripheral surfaces of the pair of arrangement rollers 41. The spiral groove has a U shape having a wide width, having a right angle at the edge and having the shallow depth. The whole width of the opposed spiral groove is formed narrower than a diameter of a bar-shaped screw part of the supplying screws. A brush member is arranged at the upstream side upper side of the storage part of the arrangement rollers. The brush member 43 is arranged in a height degree of the screws of lying down on the lower tip of a brush of the brush member over the substantially whole width in the horizontal direction of the pair of arrangement rollers 41. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a screw supply device for aligning and discharging a predetermined number of screws, such as screws, nuts, hooks, and rivets.

Conventionally, this type of screw supply machine is provided with a receiving portion that is provided in a machine base and accommodates a large number of screws, and is provided with a pair of rotating rollers from the inside to the outside of the receiving portion. There is provided a screw supply device that feeds a predetermined number of screws to the outside by providing opposing spiral grooves and sandwiching screw portions between the spiral grooves of a pair of rollers (Patent Documents 1 to 3). ).
For example, Japanese Patent Application Laid-Open No. 1-123622 discloses a device that supplies a thin portion of a conical member between a pair of skewed rollers and feeds it by its own weight. In addition, the technique disclosed in Japanese Patent Application Laid-Open No. 7-300221 of Patent Document 2 is a screw supply device that supplies a screw by aligning screws by gently skewing a pair of rollers and providing a spiral screw and groove at the tip of the roller. Proposed. In particular, as shown in FIGS. 11 (a) and 11 (b), the technique disclosed in Japanese Patent Laid-Open No. 2004-168542 of Patent Document 3 includes a pair of pitch adjusting shafts a and a spiral groove b facing the tip of the shaft. Provided is a screw supply device that supplies a predetermined number of screws by feeding them to the outside so as to sandwich a screw portion s1 of a thin rod of the screws s between the spiral grooves b of the pair of shafts.

By the way, recently, in the assembly line of the factory, there is a case where only a necessary number of screws are handed over to the worker by one operation of the screw supply device to prevent forgetting to install the screws. In particular, it is an effective means of preventing forgetting to attach to unskilled workers, and a screw supply device that reliably supplies a predetermined number of screws is required even outside the field of assembling electronic components. In addition to the screws, the target parts are required to have a predetermined number of supply devices such as nuts, rivets, rivets and the like, and their sizes are also in a wide range.
Most of the above-described screw supply devices for supplying screws of known technology are for mounting screws for relatively small electronic members for mounting a printed circuit board to a frame, and are thick screws having a diameter of 7 mm or more. When supplied, it becomes a large-scale device for aligning the spiral grooves, and there is a disadvantage that a member such as a screw is clogged between the spiral grooves. In addition, since a part of the supply component is supported so as to be sandwiched between the spiral grooves provided on the roller and the shaft, there is a problem that it lacks versatility.
Furthermore, when the length of the rod-like screw portion of the screw member is equal to or larger than the diameter of the conveying roller, there is a problem that the lower portion is below the roller and the conveying cannot be performed.

Japanese Utility Model Publication No. 1-123622 Japanese Unexamined Patent Publication No. 7-300221 JP 2004-168542 A

  The present invention has been made in view of the conventional problems, and the screw supply device can be used for the size and shape of the screws and a wide variety of screws in the device as it is. It can be used for members equivalent to screws such as nuts, rivets, rivets, etc. It is an object of the present invention to provide a screw supply device that can have a simple structure and can be easily maintained.

In order to solve the above-described problems, the invention of claim 1 is a screw supply device in which a pair of alignment rollers are provided in parallel and horizontally on an upper portion of a storage portion for storing screws. Opposite spiral grooves are provided on the surface, the spiral grooves are U-shaped with a wide width, a right edge, and a shallow depth, and the entire width of the opposing spiral grooves is a rod-shaped threaded portion of a screw to be supplied. The brush member is narrower than the diameter, and a brush member is provided on the upper upstream side of the storage portion of the arrangement roller. The brush member extends over substantially the entire horizontal width of the pair of arrangement rollers, and the brush of the brush member. It is characterized in that it is arranged at the height of the screws on which the lower end of lies.
According to a second aspect of the present invention, in the screw supply device according to the first aspect, the bottom portion of the downstream side of the storage portion is inclined with the bottom plate of the movable bottom on the downstream side centering on the upstream rotation shaft. A lift mechanism that is movable is provided, and the lift mechanism is operated by a load of a screw member on the bottom plate.
According to a third aspect of the present invention, in the screw supply device according to the first or second aspect, a detecting means for detecting the passage of the screws is arranged in the vicinity of the tip of the pair of arranging rollers, and the detecting means is used in advance. When detecting the set number of screws, there is provided control means for controlling the drive mechanism of the array roller to stop the rotation of the array roller.
According to a fourth aspect of the present invention, in the screw supply device according to any one of the first to third aspects, the screws are supplied to the upper peripheral surface of the arrangement roller from below on the upstream side of the storage portion of the pair of arrangement rollers. A fan-shaped side wall is provided.

According to the invention of the screw supply device of claim 1, the opposing spiral grooves are wide, the groove edges are perpendicular and shallow in depth on the peripheral surfaces of the pair of array rollers, and the opposing spiral grooves Since the full width of the screw is narrower than the diameter of the rod-like screw part of the screws to be supplied, the screw supply device can be used for the size and shape of the screws as well as a wide variety of screws, Can be used for supplying screws S etc. whose length is longer than the arrangement roller diameter, and can be used for members equivalent to nuts, rods, rivets, etc. in addition to screws. In addition, a predetermined number of members such as screws can be reliably aligned and supplied. Further, a brush member is provided on the upper side of the pair of arrangement rollers, and the screws are separated and transferred one by one so that the screws are not damaged, so that the screws can be supplied reliably. Further, conventionally, the length of the rod-shaped screw portion has been required to be within the diameter of the roller, but even longer screws can be supplied. Moreover, as a screw supply apparatus, it can be made into a robust structure with a comparatively simple structure, and maintenance of the apparatus is also easy.
According to the second aspect of the present invention, the bottom portion on the downstream side of the storage portion is a movable bottom that can move so that the bottom plate on the downstream side is inclined upward about the rotation axis. Since the raising mechanism that operates so as to rise is provided, an unnecessary number of screw members are not supplied to the arrangement roller, and the screw members dropped from the pair of arrangement rollers can be automatically supplied to the arrangement roller. It is possible to reliably supply the last screws S. Further, the capacity of the storage unit can be increased, a large amount of members such as screws S can be stored in the storage unit, and the number of times of replenishment of screws S to the storage unit can be reduced.
According to the invention of claim 3, the detecting means for detecting the passage of the screws is arranged in the vicinity of the front end of the arranging roller, and when the number of screws set in advance is detected by the detecting means, the driving mechanism of the arranging roller is controlled. Since the control means for stopping the rotation of the arrangement rollers is provided, only the necessary number of screws are handed over to the operator in one operation, so that forgetting to install the screws can be prevented. For an unskilled worker, this is an effective means of preventing forgetting to attach.
According to the invention of claim 4, since the fan-shaped portion side wall having a rotating scraper function for supplying screws to the upper peripheral surface of the arrangement roller from below is provided on the upstream side in the storage portion of the pair of arrangement rollers, it is heavy. Even screws can be reliably supplied upstream of the arrangement roller.

The external appearance perspective view of the screw supply apparatus of the Example of this invention, The external perspective view of the drive control unit of the screw supply device, 1 is a side sectional view of FIG. An exploded perspective view of the bottom of the storage part of the screw supply device and the screw supply part, 5 (a) is a cross-sectional view of a state in which the fan-shaped portion side wall of FIG. 4 is rotated in a clockwise direction, and FIG. The top view centering on the arrangement | positioning roller part from the upper direction of FIG. The rear view centering on the drive mechanism of FIG. 8A and 8B are explanatory views for explaining the operation of the arrangement roller unit of the present invention, in which FIG. 8A is a diagram showing a state in which the screws S are being transferred, FIG. ) Is a diagram of the state in which the screws S further advance and fall to the discharge part, FIG. 9A is an explanatory diagram for explaining a state in which the arrangement roller in the present invention transfers the screws S, and FIG. 9B is an explanatory diagram for explaining a state in which the equivalent member S ′ is transferred. FIG. 1 is a front view centering on the discharge part of FIG. It is explanatory drawing of the conventional screw supply apparatus.

  The present invention provides a screw supply device in which a pair of alignment rollers are provided in parallel and horizontally on the upper portion of a storage portion for storing screws, and a spiral spiral groove is provided on the circumferential surface of the pair of alignment rollers, The spiral groove is U-shaped with a wide width, a right edge, and a shallow depth, which is narrower than the diameter of the rod-like thread portion of the screws supplied by the entire width of the opposing spiral groove, Since the screw supply device is provided with a brush member on the upper upstream side, it can be used for various screw sizes and shapes and a wide variety of screws with the same device. -It can be used for members equivalent to screws such as rivets, etc., and is versatile, and can reliably supply a predetermined number of members such as screws, making it a robust structure with a relatively simple configuration, There is an advantage that maintenance is easy.

Below, the Example of the screw supply apparatus which implemented this invention is described in detail based on figures.
As shown in FIGS. 1 and 2, the screw supply device 1 of the present embodiment includes a screw storage unit 2, an arrangement roller unit 4 that moves the screws S aligned from the storage unit 2 to the outside, and the arrangement roller unit 4. An array roller drive unit 5 that drives the array roller unit 4, a screw supply unit 3 that supplies the screws S of the storage unit 2 to the array roller unit 4, and a discharge that discharges the screws S from the tip of the array roller unit 4 When the number of screws set in advance is detected by the unit 6, the detection unit 7 that detects the screws to be discharged, and the detection unit, the array roller drive unit 5 is controlled to stop the drive of the array roller unit 4. It consists of part 8. Hereinafter, these specific structures will be described.

[Screw storage part 2]
With reference to FIGS. 1, 3, and 4, the screw storage unit 2 will be described first. The bottom 21 occupies most of the downstream side of the storage unit 2, and the rotation shaft 22 on the back side is the center. The bottom plate 23 on the downstream side is movable so that the bottom plate 23 is inclined upward, and the front end 231 of the bottom plate 23 is vertically moved so as to slide on the arc-shaped contact member 241 of the front wall 24 of the storage unit 2. Move to. Both end portions 232 of the front end portion 231 are provided with spring-loaded shafts 233 that fit into arc-shaped sliding long holes 251 provided on the side walls 25 on both sides of the storage portion 2. Is provided with a locking portion 253 for fixing the contraction spring 26 and a spring-loaded pulley 252. It is locked to the hanging shaft 233.
Therefore, many screws S are stored in the storage unit 2 and the screws S are loaded on the bottom plate 23 of the storage unit 2, but when the loading amount of the screws S on the bottom plate 23 is large and the load is large, The spring hook shaft 233 is also positioned below against the contraction force of the contraction spring 26. Then, when the screws S of the storage unit 2 are gradually discharged to the screw supply unit 3 to be described later and the number of the screws S loaded on the bottom plate 23 is reduced and the load is reduced, the contraction force of the contraction spring 26 is applied. The spring hook shaft 233 gradually rises upward, and the bottom plate 23 is in a skewed state with the rotary shaft 22 positioned downward and the front end 231 positioned upward.
As a result, the bottom plate 23 is further inclined with the rotation shaft 22 positioned downward and the front end 231 positioned upward, so that the screws S loaded on the movable bottom further move toward the rotation shaft 22. It moves and is gradually supplied to the screw supply unit 3, and in this way, almost all of the screws S on the bottom plate 23 are discharged to the screw supply unit 3.
In addition, since an arrangement roller section 4 to be described later is disposed above the storage section 2, the screws S dropped from the arrangement roller section 4 are automatically supplied to the arrangement roller section 4 again. . Since the movable bottom, which is the raising mechanism, does not supply an unnecessary number of screws S to the arrangement roller unit 4, the arrangement roller unit 4 can be driven without applying an extra load.
An upper opening 29 that is opened is provided above the storage portion 2, and screws S to be supplied are appropriately supplied from the upper opening 29. Further, as described above, by making the bottom plate 23 a movable bottom, it is possible to reliably supply the last screws S, and also to increase the volume of the storage portion 2, and to provide a large amount of screws S, etc. This member can be stored in the storage unit 2, and the number of replenishments can be reduced.

[Screw supply section 3]
As described above, the screw supply unit 3 is disposed on the side of the back wall 27 of the rotating shaft 22 of the bottom plate 23 as shown in FIGS.
The screw supply unit 3 is provided with a drum 31 that reciprocally rotates. The drum 31 has a back bottom plate 34 in contact with the back wall 27 and has fan-like portions on both sides of the hatched portion where the screws S do not enter the inner peripheral side. As shown in FIG. 5A, a space 33 for receiving screws S is formed under the drum 31 when the side wall 32 is provided, and a space 33 for receiving screws S is formed on the bottom plate 23. Screws S that have been dropped. Next, as shown in FIG. 5 (b), when rotating leftward, the space portion 33 that receives the screws S of the drum 31 moves upward, and the screws S that have fallen into the space portion 33. Falls on the pair of arrangement rollers 41 of the arrangement roller unit 4.
The fan-shaped portion side wall 32 has a kind of scraper function. However, when the fan-shaped portion side wall 32 rotates and reaches the maximum clockwise rotation position, as shown in FIG. Is inclined toward the arrangement roller unit 4 to drop the screws S onto the arrangement roller unit 4, and the right inclined wall 322 forms a space 33 so that the screws S loaded on the bottom plate 23 fall. Evacuate to the upper left. Thereafter, the drum 31 rotates counterclockwise and reaches the state shown in FIG. 5B at the maximum rotation position, and the right inclined wall 322 of the fan-shaped portion side wall 32 is inclined toward the arrangement roller portion 4. The screws S are dropped on the arrangement roller unit 4, and the left inclined wall 321 forms a space 33 so that the screws S loaded on the bottom plate 23 fall and waits in the upper right.
Note that the angle formed between the left inclined wall 321 and the right inclined wall 322 of the fan-shaped side wall 32 may be an angle such that the screws S do not enter the drum 31 in the process of reciprocating rotation, and preferably 110 About degrees.
This is alternately repeated by the drum drive mechanism 35. As shown in FIG. 1, the drum drive mechanism 35 is provided with an external gear 351 on the outer periphery of the drum 31, and a plurality of support shafts 354 and the support shaft 354 are provided on the outer periphery of the drum 31. The drum 31 is supported by a plurality of support bearings 355. Then, as shown in FIG. 7, it is driven to reciprocate by a drive motor 353 connected to a drive gear 352 that meshes with an external gear 351 and a drum rotation sensor 36 that detects the rotational position of the drum 31 and reversely rotates it. It is configured.
Note that an arrangement roller cover 37 is provided so that only the upper surface of the arrangement roller section 4 in the screw supply section 3 is exposed and the screws S are not bitten.

[Array roller unit 4, array roller drive unit 5]
The screws are picked up from the storage unit 2 by the screw supply unit 3 and fall and move on the pair of arrangement roller units 4 as shown in FIGS. 5 (a) and 5 (b). The arrangement roller unit 4 will be described with reference to FIGS.
As shown in a plan view from above of the apparatus of FIG. 6, a pair of arranging rollers 41 is arranged on the arranging roller unit 4 from the front wall 24 of the storage unit 2 to the rear bottom plate 34 of the drum 31 of the screws supply unit 3. A pair of arraying roller guides 28 are provided outside the pair of arraying rollers 41 to smoothly guide the screws S falling outward from the pair of rollers to the bottom plate 23, as shown in FIGS. The arrangement roller driving unit 5 for driving the arrangement roller unit 4 is provided outside the back wall 27 of the storage unit 2. The drive gears 51a and 51b provided at the ends of the pair of array rollers 41 are driven via the idle gear 53 by the drive motor 52 of the array roller drive unit 5, and are connected to the drive gears 51a and 51b. 41a and 41b are rotationally driven. The rotation direction of the pair of arrangement rollers 41a and 41b rotates in the direction in which the spiral spiral grooves 42, 42a, and 42b discharge the screws.
As shown in FIG. 8 (a), the pair of arrangement rollers 41a and 41b (pair) as the main body of the arrangement roller unit 4 are arranged in parallel and horizontally on the upper part of the storage unit 2 for storing screws, and are arranged at the outer periphery of each other. Are in contact with each other and rotated outwardly from the contacted position when viewed from above, that is, the arrangement roller 41a on the lower side of the drawing rotates in the direction of arrow A, and the method of the upper arrangement roller 41b rotates in the direction of arrow B. As a result, the spiral grooves 42, 42a, 42b rotate so as to move in the direction in which a part of the screws are hooked and discharged, that is, in the direction of arrow C.
As described above, when the rotation of the pair of alignment rollers 41a and 41b is rotated in a direction away from each other as viewed from the upper surface, the direction of the spiral groove 42 is discharged as if the upper surface is rotated by the rotation of the alignment roller 41 (pair). It is necessary to install in the direction.

Here, the shape of the spiral groove 42 itself will be described. As shown in the sectional view of the spiral groove 42 in FIG. 9, the flat bottom 421 has a sufficiently wide width W and a flat bottom 421 as compared with the size of the screws S and similar parts. The groove edge 422 has a right angle and the groove depth H is also U-shaped, and the entire width of the opposing spiral groove 42, that is, 2H twice the groove depth H, is supplied to the apparatus. It is necessary to make the narrowest part of the screws and similar parts, the screws S, smaller than the diameter of the rod-like screw part S1. As shown in FIG. 9 (a), the screws S and the like are not caught between the opposing spiral grooves 42, and the screws S and the like are simply hooked at the groove edge 422 of the spiral groove 42. As shown in FIG. 9B, the nuts S ′ and the like can be transferred by the same spiral groove 42 at the edge 422 of the groove. Thus, the spiral groove 42 has a shallow depth H and a U-shape having a flat bottom portion 421 that is sufficiently wide with respect to the groove width transfer member. And the size and shape of similar parts can be used in a wide range, so it can be used in a wide range without replacing the arrangement roller part 4, and it is versatile. Besides screws, it is equivalent to screws such as nuts, rods, rivets, etc. The members can be aligned and discharged, and can be combined with a drive control unit 8 to be described later. In this case, a desired predetermined number of screws S can be repeatedly supplied.
Further, a brush member 43 is provided on the upper side of the pair of arrangement rollers 41. The brush member 43 extends over substantially the entire horizontal width of the pair of arrangement rollers 41, and the screws on which the brush lower end 431 of the brush member 43 lies. The screws S that are transported in an overlapping manner are separated so that the screws are not damaged, and are transferred one by one so that the screws are not damaged. I am trying to supply. Therefore, the height of the brush lower end 431 of the brush member 43 is adjusted to a position of the height of the members such as the screws S rather than the pair of the arrangement rollers 41 so that the members such as the screws S are excluded from overlapping. It is desirable.

The roller diameter of the actual arrangement roller 41 (pair) of the embodiment is 24.4 mm, the dimensions of the spiral groove of the roller 41 are the depth H = 2.5 mm, the flat portion width W = 12 mm, and the spiral angle (pitch). ) Is 24.4 / 55 on the left and right, but the screws that can be used for this can be 6mm to 16mm in diameter, can be used with specially shaped screws, and nuts can be used in the outer diameter of 6mm to 12mm. there were. As a result of the experiment, sleeves, rubber feet, hole plugs, scissors, rivets, etc. could be used as other similar members.
Of course, in this embodiment, the width W of the flat portion is set to 12 mm, but by changing the width W of the flat portion, the range of members that can be supplied can be increased, and the spiral angle (pitch) is set to the left and right respectively. Although it was set to 24.4 / 55, as described above, it is possible to supply a product from a short length to a long one with some stability.
Further, if the rotational speed of the pair of arrangement rollers 41 is made variable and slowed, even for a short screw, it is possible to discharge one piece at a time, and for a short screw, it is also possible to make one piece by making the groove pitch fine. It can be surely discharged.

[Discharge unit 6, detection unit 7]
As shown in FIGS. 1, 6, and 8, a discharge portion 6 that discharges screws S to the outside is provided at the tip of the arrangement roller portion 4. Referring to FIG. 10 from the entire surface of the discharge portion 6, a discharge port 242 such as screws S is provided at a portion of the front wall 24 of the storage portion 2 following the front end portion of the arrangement roller portion 4. Part 6 is attached.
The discharge / discharge unit 6 includes a slanting exit slider 61, and a light emitting unit 71 for detecting screws S discharged to an appropriate portion of the slide path 611 of the exit slider 61, in this embodiment, an intermediate part of the slide path 611, and the light emitting unit 71. A detection unit 7 including an opposing light receiving sensor 72 is provided, and the discharge unit 6 is fixed at an appropriate position by the mounting adjustment long hole 621 of the mounting member 62 so that the screws S are smoothly dropped.
The screws S and the like from the discharge unit 6 may be received by an appropriate tray or directly by a human hand or the like.

[Drive control unit 8]
As shown in FIG. 2, the drive control unit 8 of the screw supply device 1 is provided with a power switch 81 and a counter 82 with an operation button 821 for setting the number of ejection (extraction) of screws S, and a predetermined number of screws S is provided. A discharge switch 83 is provided, and the drive control unit 8 is electrically connected to the power source, the light receiving sensor 72 of the detection unit 7, the drum drive mechanism 35, and the array roller drive unit 5.
The operation procedure of the drive control unit 8 is as follows. First, the power switch 81 is turned on, then the number to be taken out is set in advance by the operation button 821 of the take-out number setting function, and the predetermined number discharge switch 83 is turned on. When the roller drive unit 5 is operated and the detection signal from the light receiving sensor 72 is detected to detect the screws S discharged by the discharge unit 6, the drum drive mechanism 35 and the array roller are automatically reached when the set number is reached. The drive part 5 stops and the supply of the screws S is stopped.
As an example of an actual usage pattern, the user presses a predetermined number of discharge switches 83 to directly receive the screws S from the discharge unit 6 by the user's hands, and attach the screws to the device to be assembled and the vehicle body. In this way, the user receives only the necessary number of screws in a single operation, and if all of them are used up, the installation of the screws will not be forgotten, especially for unskilled workers. It becomes a means.

As described above, according to the embodiment of the screw supply device of the present invention, the spiral grooves 42 facing each other on the peripheral surfaces of the pair of arrangement rollers 41 have a wide flat bottom portion 421 and the edge 422 has a right angle and a shallow depth. The overall width of the opposing spiral groove 42 is narrower than the diameter of the rod-shaped screw portion S1 of the screws S to be supplied. Can be used for a wide range of screws, especially for the supply of screws such as screws S whose length is greater than the diameter of the array roller. In addition to screws, the same members as screws such as nuts, rods and rivets It can be used in a wide range of applications, and a predetermined number of members such as screws can be reliably aligned and supplied. Further, the brush members 43 are provided on the upper side of the pair of arrangement rollers 41 so that the screws are separated and transferred one by one so that the screws are not damaged, so that the screws can be reliably supplied. Further, conventionally, the length of the rod-shaped screw portion has been required to be within the diameter of the roller, but even longer screws can be supplied.
Further, the bottom portion 21 on the downstream side of the storage portion 2 is a movable bottom that can move so that the bottom plate 23 on the downstream side is inclined upward about the rotation shaft 22, and downstream when the weight of the members such as the screws S becomes small. Since the raising mechanism by the contraction spring 26 that operates so that the side rises is provided, an unnecessary number of screws S are not supplied to the arrangement roller pair 41, and the screws S that have dropped from the pair of arrangement rollers 41 are removed. It can be automatically supplied to the arrangement roller 41. Further, a detecting unit (means) 7 for detecting the passage of screws is arranged near the tip of the arranging roller 41, and when the number of screws set in advance is detected by the detecting unit 7, the arranging rollers of the arranging roller 41 (pair). Since the drive control unit (control means) 8 for controlling the drive unit (mechanism) 5 to stop the rotation of the arrangement roller 41 (pair) is provided, the user (operator) can be operated by pressing the predetermined number discharge switch 83 once. Only the necessary number of screws S are handed over to prevent forgetting to attach the screws S, and this is an effective means for preventing forgetting especially for unskilled workers. Further, since the fan-shaped side wall 32 having a scraper function for supplying screws to the upper peripheral surface of the arrangement roller from below is provided on the upstream side of the storage section 2 of the pair of arrangement rollers 41, a white goods assembly line or vehicle assembly Even the heavy screws S used in the line can be reliably supplied upstream of the arrangement roller 41.
Since the screw supply device has the above-described configuration, it can be made to have a robust structure with a relatively simple configuration, and maintenance of the device is also easy.
Needless to say, the present invention is not limited to the above-described embodiments as long as the features of the present invention are not impaired.

  Screws supplied by the full width of the opposing spiral groove, the opposing spiral spiral grooves having a wide width, a right edge, and a shallow depth on the peripheral surfaces of the pair of arrangement rollers of the screw supply device Since the diameter of the rod-shaped screw portion is narrower, a predetermined number of members other than screws, such as nuts, rods, and rivets, can be reliably supplied.

S ・ ・ Screws, S1 ・ ・ Bar-shaped screw part, S '・ ・ Same screw member,
1. Screw supply device,
2 .. Storage part, 21 .. Bottom part, 22 .. Rotating shaft, 23 .. Bottom plate (movable bottom),
231 ... Front end, 232 ... Side end, 233 ... Spring shaft,
24..Front wall, 241, ... Contact member, 242, ... Discharge port,
25 ·· Side wall, 251 · · Sliding long hole, 252 · · Spring pulley, 253 · · Locking part,
26 .. Contraction spring, 27 .. Back wall, 28 .. Arrangement roller guide,
29 .. Upper opening,
3 .. Screw supply part, 31 ... Drum, 32 ... Fan side wall,
321 ... Left wall, 322 ... Right wall, 33 ... Space part,
34 .... Back plate, 35 ... Drum drive mechanism, 351 ... External gear, 352 ... Drive gear,
353 ... Drive motor, 354 ... Support shaft, 355 ... Support bearing,
36..Drum rotation sensor, 37..Array roller cover,
4 .. Arrangement roller part, 41, 41a, 41b ... Arrangement roller (pair),
42, 42a, 42b ... spiral groove, 421 ... flat bottom, 422 ... edge,
43 ... Brush members, 431 ... Lower tip of brush,
5 .. Arrangement roller drive part, 51a, 51b ... Drive gear, 52 ... Drive motor,
53. Idle gear,
6 .... discharge part, 61 ... exit slider, 611 ... slip path,
62 .... Mounting member, 621 ... Mounting adjustment long hole 7 ... Detection part 71 ... Light emitting part 72 ... Light receiving sensor 8 ... Drive control part 81 ... Power switch 82 ... Counter
821 ... Operation buttons for setting the number of discharges, 83 ...

Claims (4)

In a screw supply device in which a pair of alignment rollers are provided in parallel and horizontally on the upper part of a storage unit for storing screws,
The peripheral surfaces of the pair of arrangement rollers are provided with opposing spiral grooves,
The spiral groove is U-shaped with a wide width, a right edge and a shallow depth,
The full width of the opposing spiral groove is narrower than the diameter of the rod-shaped thread portion of the screws supplied,
Further, a brush member is provided on the upstream side of the storage portion of the arrangement roller,
The screw supply device characterized in that the brush member is arranged at almost the same height as the screws on which the lower end of the brush of the brush member lies across the entire width of the pair of arrangement rollers in the horizontal direction.   The bottom portion on the downstream side of the storage portion is provided with a lifting mechanism that is movable so that the bottom plate of the downstream movable bottom is tilted upward about the upstream rotation shaft, and the lifting mechanism is a screw member on the bottom plate. The screw supply device according to claim 1, wherein the screw supply device is operated by weighting of the screw.   Detection means for detecting the passage of screws is arranged near the tips of the pair of arrangement rollers, and when the number of screws set in advance is detected by the detection means, the drive mechanism of the arrangement rollers is controlled to The screw supply device according to claim 1, further comprising a control unit that stops rotation of the arraying rollers.   The screws according to any one of claims 1 to 3, wherein a fan-shaped side wall for supplying screws to the upper peripheral surface of the arranging roller from below is provided on the upstream side of the storage portion of the pair of arranging rollers. Feeding device.

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