KR101505841B1 - Apparatus for supplying micro bolt - Google Patents

Abstract

According to the present invention, a small-sized bolt supply device comprises: a bolt distributing unit, a bolt feeder, a bolt inserting block, a bolt suction nozzle, and a bolt force-conveying nozzle. The bolt distributing unit includes a fixing plate having an installation hole with a horizontal cross section on a center portion thereof with one end of the installation hole opened laterally, and a rotating plate formed in a disk shape whose outer side end is inserted to be mated with an inner side end of the installation hole, wherein the rotating plate is installed to rotate around a vertical direction center axis and a bolt inserting hole, with a transverse section large enough to let a body portion of a small-sized bolt and small enough to block a head portion of the small-sized bolt is formed on the outer side end of the rotating plate. The bolt feeder conveys a number of small-sized bolts, whose heads are arranged to face upward in series to an open portion of the installation hole such that the small-sized bolt is inserted into the bolt inserting hole. An inner penetrating hole with a size enabling the small-sized bolt to pass is formed on the bolt inserting block, while a bolt convey pipe is connected to one end of the bolt inserting block. When the rotating plate is rotated such that the inserting hole with the small-sized bolt inserted therein is positioned on a suction area, the bolt suction nozzle sucks in the small-sized bolt on the suction area and lowers the bolt into the inner penetrating hole of the bolt inserting block. The bolt force-conveying nozzle sprays high pressure air into the inner penetrating hole of the bolt inserting block to forcefully convey the small-sized bolt along the bolt convey pipe.

Description

[0001] Apparatus for supplying micro bolt [0002]

The present invention relates to a feeding apparatus for automatically feeding a very small screw, and more particularly to a very small screw feeding apparatus configured to feed a very small screw so that the head unit faces upward and to supply the screw one by one.

Generally, a screw is a representative fastening means for fastening a structure, and has a head portion and a body portion extending downward from the head portion and formed with threads. A conventional screw feeder for feeding such a screw is generally configured to feed a screw using a conveyor, a belt, or the like. Since the screw is not aligned and supplied in a certain direction, There is an inconvenience in that the screws that are placed in the recesses must be picked up by hand to perform the screwing operation. In addition, when a screw is conveyed using a conveyor belt, it takes a lot of time to convey the screw, and there is also a problem that it takes a lot of cost to install the conveyor belt.

Therefore, in order to solve such a problem, there has been proposed a screw feeder for aligning and feeding the screw so that the head portion faces upward. In this case, in order to increase the efficiency of the screwing operation, the screw must be supplied to the operator one by one in a predetermined cycle. The conventional screw supplying device has a function of transferring the screws in a line, There is a disadvantage in that there is a limit in improving the efficiency of the screwing operation. Particularly, in case of a very small screw having a very small size, if the screws are not provided one by one as described above, not only the efficiency of the screwing operation is very low, but also the screwing automation becomes impossible.

KR 10-2003-0091894 A

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems, and it is an object of the present invention to provide an apparatus and a method for supplying a plurality of very small screws vertically erected in a row, one by one, Supply device.

In order to accomplish the above object, according to the present invention, there is provided a very small screw feeder comprising: a fixing plate having a mounting hole having a circular horizontal cross section at its central portion, one side of the mounting hole being opened laterally; And a cross section of a size that can be passed through the body of the very small screw but not through the head of the very small screw A thread distributing unit having a rotary plate having a threaded groove formed at an outer end thereof; A screw feeder which feeds a plurality of very small screws erected upward with the head portion upward to the opening of the mounting hole to draw the very small screw into the screw inlet groove; A screw insertion block having an internal through hole sized to allow the extreme small screw to be inserted therein and having a connecting end connected to one end thereof; A screw suction nozzle for sucking a very small screw located in the suction area and lowering the suction screw into an inner through hole of the screw insertion block when the rotary plate is rotated so that the insertion groove into which the extremely small screw is inserted is positioned in the suction area; And a screw press-feeding nozzle for injecting high-pressure air into an internal through-hole of the screw-insertion block to press-feed the ultrathin screw so that the ultrathin screw is transferred along the screw.

When the end of the screw suction nozzle is seated in the suction area, the end of the screw press-feeding nozzle is seated in the inlet hole of the screw insertion block so that the screw suction nozzle sucks a very small screw located in the screw- The screw pressurization nozzle is configured to press-feed a very small screw located in the screw insertion block.

And a conveying block which is horizontally reciprocable by a conveying cylinder coupled to the elevating block and to which the screw sucking nozzle and the screw pressure feeding nozzle are mounted.

The screw suction nozzle includes a pipe-shaped housing, a slide holder formed in a pipe shape and mounted in the housing in a structure movable in the longitudinal direction of the housing, one end of which protrudes to the outside of the housing, And an elastic force is applied to the slide holder in a direction in which one end in the longitudinal direction of the slide holder protrudes to the outside of the housing, and a suction pipe connected to one end of the slide holder, Wherein the screw suction groove communicates with the inside of the slide holder through a communication hole having a diameter smaller than that of the head portion of the extremely small screw so that a vacuum pressure is formed inside the housing , A very small screw located at the entrance of the screw suction groove It is configured to be adsorbed to.

And a detection sensor for detecting the presence of the extreme small screw in the suction region.

By using the extremely small screw feeder according to the present invention, it is possible to supply a plurality of very small screws vertically erected in a line, periodically one by one, and it is possible to transfer the very small screw quickly and far without a conveyor belt, Not only is it possible to increase the productivity of the screw joint, but also has an advantage.

1 is a perspective view of a very small screw feeder according to the present invention.
2 is a rear perspective view of a very small screw feeder according to the present invention.
3 is an enlarged perspective view of a screw distribution unit included in a very small screw feeder according to the present invention.
4 and 5 are a perspective view and a vertical sectional view of a screw suction nozzle included in the ultrasonic screw feeder according to the present invention.
6 to 11 are diagrams showing the state of use of the ultrasonic screw feeder according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a very small screw feeder according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a rear perspective view of a very small screw feeder according to the present invention, and Fig. 3 is a perspective view of a screw feeder included in a very small screw feeder according to the present invention. Fig. Fig.

The extremely small screw feeder according to the present invention supplies a very small screw, that is, a very small screw (10), in a vertically standing state, by feeding one by one according to a preset cycle, And the extremely small screw 10 can be quickly transferred to a far distance without a separate conveyor, so that the productivity of the screwing process can be increased. In addition, the extremely small screw (10) according to the present invention picks up very small screws (10) one by one by using the vacuum pressure (negative pressure) generated by sucking air and uses the positive pressure generated by blowing air at high pressure So that it is configured to press-feed the extremely small-sized screw (10).

That is, in order to achieve the above-mentioned object, a screw feeder 100 for feeding a plurality of very small screws 10 erected upward, A screw dispensing unit 200 for separately providing a plurality of very small screws 10 transferred from the screw feeder 100 and a single very small screw 10 provided as a suction area by the screw dispensing unit 200 A screw suction nozzle 600 for sucking and picking up the ultrasonic screw 10 by a vacuum pneumatic pressure and an internal through hole having a size to which the ultrasonic screw 10 can be inserted, A screw insertion block 800 receiving a screw 10 and a screw 810 at one end thereof and injecting high pressure air into an inner screw hole of the screw insertion block 800, Is conveyed along the transaxle (810) And a screw pressure feeding nozzle 700 for feeding the very small screw 10 by pressure.

The screw feeder 100 has a guide rail structure in which a plurality of very small screws 10 are fed in a row so that the very small screw 10 which is fed in a line can not jump upwards, And a guide plate 110 located on the upper side of the guide plate 10. 3, the screw feeder 100 for feeding a plurality of very small screws 10 in a row is an apparatus that has been widely commercialized in the technical field of the present invention, The detailed description of the internal structure and the operation principle of this embodiment will be omitted.

Meanwhile, the screw distributing unit 200 includes a mounting plate 212 having a circular horizontal cross-section at its central portion, a mounting plate 212 having a fixing plate 210 whose one side is opened laterally, And a rotary plate 220 which is formed in a disc shape inserted to abut the inner end of the hole 212 and is mounted so as to be rotatable about a vertical axis in the vertical direction. A plurality of screw-in grooves 222 are arranged at an outer end of the rotary plate 220 so as to be spaced apart from each other by a predetermined distance. The screw-in grooves 222 can pass through the body of the very small screw 10, The head portion of the ultrasonic screw 10 has a cross section of a size that can not pass therethrough. The ultrasonic screw 10 having the body portion in the screw insertion groove 222 is seated on the upper surface of the rotary plate 220, It will not fall out. Therefore, when the rotary plate 220 rotates in a state where the very small screw 10 is drawn into the screw insertion groove 222, the very small screws 10 move along the outer peripheral surface of the rotary plate 220 one by one. The number of the threaded grooves 222 is smaller than the number of the screwed grooves 222 in the supply period of the very small screw 10, And may be changed to three or less or five or more depending on the rotation characteristics of the rotor 220.

The screw suction nozzle 600 is arranged so that the inlet groove in which the very small screw 10 is drawn is positioned at a suction area (a position opposite to the point where the very small screw 10 is received from the screw feeder 100) 220 is rotated, it sucks a very small screw (10) located in the suction region and drops it to the inner through hole of the screw input block (800). The very small screw 10 inserted into the screw insertion block 800 by the screw suction nozzle 600 can be quickly transported in the inside of the sealing pipe 810 by the high pressure air injected from the screw pressure feeding nozzle 700, The use of the ultrasonic screw feeder according to the present invention has the advantage that the ultrasonic screw 10 can be transported more quickly and accurately. In addition, the extremely small screw feeder according to the present invention can transfer the very small screw 10 without a separate conveyor, so that the structure of the apparatus can be simplified by omitting the conveyor, have. In addition, the conventional screw feeder can simply feed the screw only in the horizontal direction. However, the ultrasonic screw feeder according to the present invention can feed the ultrathin screw 10 not only horizontally but also upwardly and downwardly, Since the movement path of the very small screw 10 can be changed only by changing the direction of the screw 810, there is an advantage that the utilization is very high.

In order to operate the screw suction nozzle 600 and the screw pressure feeding nozzle 700 as described above, the screw suction nozzle 600 and the screw pressure feeding nozzle 700 must be reciprocated vertically and horizontally, The extreme small screw feeder according to the present invention includes a lift block 400 which is vertically reciprocable by an elevating cylinder 410 and a conveying cylinder 510 which is coupled to the elevating block 400, It is preferable to have a transport block 500 as much as possible.

The screw suction nozzle 600 and the screw pressure feeding nozzle 700 are both fixedly coupled to the conveying block 500. When the elevating block 400 is vertically conveyed by the elevating cylinder 410, The screw suction nozzle 600 and the screw pressurizing nozzle 700 are also vertically moved when the conveying block 500 is conveyed in the horizontal direction by the conveying cylinder 510. Also, Lt; / RTI > At this time, since the transfer unit for reciprocating the target unit in the vertical and horizontal directions by the cylinders arranged in the vertical and horizontal directions is already commercialized in the related art, the detailed description thereof will be omitted.

Even though the very small screw 10 is not inserted into the screw inlet groove 222 located in the suction area due to a malfunction of the screw feeder 100 or a malfunction of the screw distribution unit 200, And the screw pressurization nozzle 700 operate in the same manner, the screw fastening device which receives and assembles the very small screw 10 causes the assembly failure. Therefore, in order to solve such a problem, the ultrasonic screw feeder according to the present invention may be provided with a sensor 300 for detecting the presence of the ultrasonic screw 10 in the suction region. When the detection sensor 300 is provided, if the ultrasonic screw 10 is not positioned in the suction area, the ultrasonic screw 10 is positioned in the suction area by further rotating the rotary plate 220 by 90 degrees, The screw connection of the screw fastening device is rested once, thereby preventing the failure of the screw connection.

At this time, the sensing unit for sensing whether or not the ultrasonic screw 10 exists in the suction region may be applied to various kinds of sensors such as an optical sensor or a magnetic sensor which emits and receives light toward the suction region.

4 and 5 are a perspective view and a vertical sectional view of the screw suction nozzle 600 included in the ultrasonic screw feeder according to the present invention.

The lower end of the screw suction nozzle 600 is brought into contact with the upper surface of the rotating plate 220 and the fixed plate 210 so that the screw suction nozzle 600 can normally suck the extremely small screw 10 located in the suction area When the screw suction nozzle 600 is shortened so that the tip end of the screw suction nozzle 600 is separated from the upper surface of the rotary plate 220 and the fixing plate 210, A problem that the end of the screw suction nozzle 600 may be broken or the top surface of the rotary plate 220 and the fixing plate 210 may be damaged may occur if the descending distance of the screw suction nozzle 600 is even longer .

Accordingly, the screw suction nozzle 600 may be configured such that the lower end of the screw suction nozzle 600 is not damaged even if the screw suction nozzle 600 is further lowered in contact with the upper surface of the rotating plate 220 and the fixing plate 210. That is, the screw suction nozzle 600 includes a pipe-shaped housing 610 and a pipe 630. The pipe 640 is mounted in the housing 610 in a pipe-like shape and movable in the longitudinal direction of the housing 610, A slide holder 620 protruding outside the housing 610 and a screw suction groove 632 coupled to one end in the longitudinal direction of the slide holder 620 and capable of being sucked up with the very small screw 10 raised And a cushion spring 640 for applying an elastic force to the slide holder 620 in a direction in which one end in the longitudinal direction of the slide holder 620 protrudes outwardly of the housing 610 do. Therefore, even if the housing 610 is further lowered while the lower end of the suction pipe 630 is seated on the upper surface of the rotary plate 220 or the fixing plate 210, the suction pipe 630 and the slide holder 620 can be moved to the housing 610, The suction pipe 630, the rotary plate 220, and the fixing plate 210 are not damaged. Of course, even if the suction pipe 630 and the slide holder 620 are drawn into the housing 610, the lower end of the suction pipe 630 is in close contact with the upper surface of the rotating plate 220 and the fixed plate 210, The suction of the small screw 10 can be normally performed.

In order to maintain the state where the extremely small screw 10 is pulled into the screw suction groove 632 by the vacuum pressure, the screw suction groove 632 and the slide groove 632 are formed so as to form a vacuum pressure in the screw suction groove 632, The inside of the holder 620 should be communicated. At this time, when the screw suction groove 632 is formed to penetrate the inside of the suction pipe 630, the very small screw 10 sucked into the screw suction groove 632 flows into the housing 610 side through the slide holder 620 Problems arise. Therefore, the screw suction groove 632 preferably communicates with the inside of the slide holder 620 through a communication hole 634 having a diameter smaller than that of the head of the microscopic screw 10.

6 to 11 are diagrams showing the state of use of the ultrasonic screw feeder according to the present invention.

When a very small screw 10 is to be provided one by one using the extremely small screw feeder according to the present invention, the rotation plate 220 is rotated so that the most of the plurality of very small screws 10 supplied from the screw feeder 100 6, the transfer cylinder 510 is operated to move the transfer block 500 as shown in FIG. 7, and then, the transfer block 500 is moved to the suction area (the right end of the rotary plate 220) The screw suction nozzle 600 is positioned above the ultra-small screw 10 located in the suction area.

When the screw suction nozzle 600 is positioned above the extremely small screw 10 in the suction area, the elevating cylinder 410 is operated to lower the elevating block 400 so that the screw suction nozzle 600 The tip of the very small screw 10 in the suction area is pulled into the screw suction nozzle 600 and then the vacuum pressure is formed inside the screw suction nozzle 600 The microscopic screw 10 is sucked into the screw suction nozzle 600 (more specifically, inside the screw suction groove 632).

When the extremely small screw 10 is sucked into the screw suction groove 632, the lift block 400 is lifted to raise the screw suction nozzle 600 as shown in FIG. 9, So that the end of the screw suction nozzle 600 is positioned above the screw input block 800 and then the vacuum pressure formed inside the screw suction nozzle 600 is released, So that the extremely small screw 10 sucked into the screw insertion block 632 falls into the screw insertion block 800. At this time, the rotary plate 220 is further rotated by 90 degrees to position the new ultrashort screw 10 in the suction area.

When the extremely small screw 10 is inserted into the screw input block 800, the transfer block 500 is moved to the left side and the lift block 400 is moved downward so that the end of the screw pressure feeding nozzle 700 is moved to the screw insertion block 800, and then compressed air of high pressure is injected into the screw insertion block 800 through the screw pressurization nozzle 700, so that the very small screw 10 is inserted into the screw insertion block 800, And is discharged from the block 800 to be transported through the circulation pipe 810. [ When the end of the screw pressurization nozzle 700 is seated in the through hole inlet of the screw insertion block 800, the end of the screw suction nozzle 600 is positioned in the suction area to suck the new ultrathin screw 10 . 9 to 11 are repeated when the ultrasonic screw 10 of the screw insertion block 800 is sucked and the ultrasonic screw 10 of the suction area is sucked, So that it can be supplied in accordance with the cycle.

As described above, the extremely small screw feeder according to the present invention picks up and feeds the extremely small screw 10 by using the vacuum pressure and the positive pressure, so that the very small screw 10 can be transported faster than when the conveyor is used Since the pressure feeding of the very small screw (10) of the screw insertion block (800) and the suction of the very small screw (10) of the suction area are performed at the same time, 10) can be supplied.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention.

10: Extra small screw 100: Screw feeder
110: Guide plate 200: Screw distribution unit
210: Fixing plate 212: Mounting hole
220: Rotating plate 222: Screw-in groove
300: Detection sensor 400: Lift block
410: lift cylinder 500: conveying block
510: transfer cylinder 600: screw suction nozzle
610: housing 620: slide holder
630: suction pipe 632: screw suction groove
634: communication hole 640: cushion spring
700: screw feed pressure nozzle 800: screw feed block
810: I ship

Claims (5)

A fixing plate 210 having a mounting hole 212 having a circular horizontal section at its center and having one side of the mounting hole 212 opened sideways and a fixing plate 210 having an outer end abutting the inner end of the mounting hole 212 (10) is mounted to be rotatable about a rotational axis, the body portion of the ultrasonic screw (10) being able to pass therethrough, the head portion of the ultrasonic screw (10) having a cross- A screw dispensing unit (200) having a rotary plate (220) formed at an outer end thereof with a screw inlet groove (222);
A screw feeder (not shown) for feeding the very small screw (10) into the screw inlet groove (222) by feeding a plurality of very small screws (10) 100);
A screw input block 800 formed with an internal through hole having a size into which the extremely small screw 10 can be inserted and having a connecting pipe 810 connected to one end thereof;
When the rotary plate 220 is rotated such that the inlet groove into which the very small screw 10 is inserted is sucked into the suction area, the very small screw 10 located in the suction area is sucked, A screw sucking nozzle 600 which descends into an inner through hole;
A screw press-feeding nozzle (not shown) for spraying high-pressure air to the inner through-hole of the screw-insertion block 800 to press-feed the ultrathin screw 10 so that the ultrathin screw 10 is fed along the screw- 700);
And a second screw feeder for feeding the screw. The method according to claim 1,
When the end of the screw suction nozzle 600 is seated in the suction area, the end of the screw pressurization nozzle 700 is seated in the through hole of the screw insertion block 800,
The screw pressurization nozzle 700 is inserted into the screw insertion block 800 while the screw suction nozzle 600 sucks the very small screw 10 located in the screw insertion groove 222, And a second screw feeder for feeding the screw feeder.
The method according to claim 1,
A lifting block 400 vertically reciprocable by a lifting cylinder 410 and a lifting block 400 reciprocally movable horizontally by a lifting block 510 coupled to the lifting block 400, Further comprising a transfer block (500) on which a screw pressurization nozzle (700) is mounted.
The method according to claim 1,
The screw suction nozzle 600 is installed in the housing 610 in a pipe-shaped housing 610 in the form of a pipe and movable in the longitudinal direction of the housing 610. One end of the screw suction nozzle 600 is connected to the housing 610, And a screw suction groove 632 which is coupled to one end of the slide holder 620 in the lengthwise direction of the slide holder 620 and can be sucked up with the extremely small screw 10 raised, And a cushion spring 640 for applying an elastic force to the slide holder 620 in a direction in which one longitudinal end of the slide holder 620 protrudes outwardly of the housing 610,
The screw suction groove 632 is communicated with the inside of the slide holder 620 through a communication hole 634 having a diameter smaller than that of the head portion of the microscopic screw 10, Wherein a very small screw (10) located at an inlet of the screw suction groove (632) is sucked into the screw suction groove (632) when a vacuum pressure is formed inside the screw suction groove (632).
The method according to claim 1,
Further comprising a sensing sensor (300) for detecting the presence or absence of the very small screw (10) in the suction region.

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