KR101320795B1 - Automatic supplying and combining apparatus for a screw and operating method of the same - Google Patents

Abstract

PURPOSE: A device for automatically supplying and combining screws and an operating method thereof are provided to prevent screws from separated while the screws collide with a combining bit when the screws are combines at a combining head and to combine the screws in a narrow space in which is difficult to combine the screws. CONSTITUTION: A device (100) for automatically supplying and combining screws comprises a first cylinder (120), a second cylinder (123), a piston (140), a mobile pipe (150), a combining head (170), a compressing spring (190), and a screw combining bit (130). The piston moves forwards or backwards along the second cylinder in a space between the first and second cylinders by the air supplied to first and second air supply ports (121, 122). The compressing spring is installed on the external diameter of the mobile pipe positioned between the combining head and the first cylinder and is compressed/expanded according to movements of the piston. The screw combining bit is installed to be rotated in the second cylinder and an inner hole of the mobile pipe and rotates the screw mounted on the combining head.

Description

Automatic Supplying and Combining Apparatus for A Screw and Operating Method of The Same}

The present invention relates to a screw automatic feeding and fastening device and a method of operation thereof, and more particularly, to a screw automatic feeding and fastening device which realizes miniaturization and weight by arranging a pneumatic cylinder on the same axis of the screw fastening bit. To a method of operation thereof.

In addition, the present invention relates to a screw automatic supply and fastening device which prevents the screw from detaching by installing a compression spring for preventing screw detachment, and a method of operating the same.

In general, the screw fastening device refers to a device for fastening the fastening object to be assembled via a screw. Conventionally, the screw fastening work in the mass production line has been used only by manual operation such as a screwdriver or electric screw. However, due to the rapid increase in labor costs and the difficulty of personnel management, the automatic screw fastening device is recently required. As it is known, research on automatic screw fasteners has been actively conducted.

However, the conventional screw fastening device has a problem that the operator has to carry out work while holding the fastening screwdriver in one hand and supply the screw with the other hand, and have to go to get the screw in the middle of the work, thereby greatly reducing work efficiency and productivity. .

In addition, the conventional screw fastening device has a pneumatic cylinder is installed separately from the axis of rotation of the screw fastening bit not only the size of the product but also the heavy weight it was difficult for the operator to handle with one hand.

In addition, the conventional screw fastening device has a problem that the screw hits the screw fastening bit when the screw fastening bit for advancing the screw after seating the screw in the fastening head is separated.

In addition, it is possible to work as long as the flat surface of the product or a wide part of the boss hole, but there is a problem that automatic fastening work is difficult in the place where there is interference around the narrow space or the screw fastening position is not constant.

Domestic Patent 10-1117287 (Registration Date: 2012.03.20.)

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a screw automatic feeding and fastening device and a method of operating the same, which realize a miniaturization and light weight by arranging a pneumatic cylinder on the same axis of the screw fastening bit. .

In addition, another technical problem to be achieved by the present invention is to provide an automatic screw supply and fastening device and a method of operating the same by placing another cylinder through which the screw fastening bit passes inside the pneumatic cylinder, thereby realizing miniaturization and light weight. .

In addition, another technical problem to be achieved by the present invention, by miniaturizing and lightening the screw fastening device, the screw automatic supply and fastening device that can be easily handled during work, and the screw fastening work is possible in a narrow space difficult to fasten work and its To show how it works.

In addition, another technical problem to be achieved by the present invention is to provide an automatic screw supply and fastening device and a method of operating the same, which prevents the phenomenon that the screw hits the fastening bit when the screw is fastened to the fastening head.

In addition, another technical problem to be achieved by the present invention is a screw automatic supply and fastening device which prevents the phenomenon that the screw is hit by the fastening bit and stopped by the screw fastening head stops after a predetermined interval by the screw spring prevention compression spring and It is to present how to operate.

The solution to the problem of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

As a means for solving the above-described technical problem, the automatic screw supply and fastening device according to the present invention, the first cylinder and the second air supply port through the inner space and the inner space of the first cylinder A piston that retracts or advances along the second cylinder in a space between the first and second cylinders by a pipe-shaped second cylinder disposed in the longitudinal direction and air supplied to the first and second air supply ports. And, integrally formed on one side of the piston, the moving pipe having a predetermined length out of the first cylinder, is installed on one side of the moving pipe, fastening to mount the screw by receiving the screw through a screw inlet A head and an outer diameter of the moving pipe positioned between the fastening head and the first cylinder, and are compressed and Pivotally mounted on the inner hole of the compression spring and the second cylinder and the moving pipe to the window, it can comprise a screw tightening bit to rotate the tightening screw mounted in the coupling head.

The automatic screw supply and fastening device advances the moving pipe out of the first cylinder while the piston moves forward by air supplied to the second air supply port, and advances the moving head of the fastening head by advancing the moving pipe. The screw inlet connected to the jaw in the inner space is supplied by mounting the screw to the jaw through the screw inlet while leaving the screw fastening bit, by the air supplied to the first air supply port, the piston The moving pipe is retracted into the first cylinder while reversing, and the screw inlet is sealed to the screw fastening bit to block the supply of the screw to the jaw while the fastening head is retracted by the backward of the moving pipe. The screw fastening bit engages the screw mounted to the jaw to The screw can be tightened.

The first cylinder has a cylindrical shape in which an opening is formed at one side and a hole is formed at the center of the other side, a cylinder cover is installed at the opening, and the second cylinder is installed at the other side of the first cylinder. It is disposed in the longitudinal direction in the inner space of the first cylinder through the other hole of the first cylinder, the moving pipe is integrally formed on one side of the piston, the first cylinder through the axial hole of the cylinder cover It can be formed out to a predetermined length.

The inner diameter of the piston and the moving pipe is larger than the outer diameter of the second cylinder, the outer diameter of the piston is larger than the outer diameter of the moving pipe and smaller than the inner diameter of the first cylinder, and the length of the compression spring and the moving pipe is It may be determined within the range that the screw fastening bit does not push out the screw mounted on the fastening head when the piston is retracted.

The fastening head includes a head body, a jaw (JAW) installed at one side of the head body and receiving and mounting a screw, a screw supply head connected with a screw inlet to the jaw through the head body, and It is connected to the screw inlet of the screw supply head, it may be configured to include a screw supply hose for supplying the aligned screw from the feeder using compressed air.

Here, the fastening head is a plurality of jaws (JAW) are inserted and coupled to the groove formed in the wall surface of the fastening head at predetermined intervals, the front end is a short jaw shape, integrally combined to form one annular cross section, It may include a ring-shaped jaw coupling ring fixed to the outer peripheral surface of the jaw and the fastening head having an elasticity.

In addition, as a means for solving the above technical problem, the method of operating the automatic screw supply and fastening device according to the present invention, (a) supplying air to the second air supply port to advance the piston; (b) advancing the moving pipe connected to the piston out of the first cylinder by advancing the piston and expanding the compression spring; and (c) in the internal space of the fastening head by advancing the moving pipe. Supplying the screw to the jaw through the screw inlet while the screw inlet connected to the jaw is out of the screw fastening bit; (d) mounting the screw supplied from the jaw of the fastening head; (e) supplying air to the first air supply port to reverse the piston; and (f) the compression switch by reversing the piston. The moving pipe is retracted into the first cylinder while the ring is compressed; and (g) the screw inlet is sealed to the screw fastening bit while the fastening head is retracted by the reversing of the moving pipe. Interrupting the supply; (h) when the compression spring is compressed by a predetermined length by the backward of the fastening head, the screw fastening bit is engaged with the screw mounted to the jaw to fasten the screw; i) repeating the steps (a) to (h).

The method of operating the automatic screw feed and fastening device may determine the length of the compression spring and the moving pipe within a range in which the screw fastening bit does not push the screw mounted to the jaw when the piston is retracted.

According to the present invention, the pneumatic cylinder is arranged on the axis of the screw fastening bit and another cylinder through which the screw fastening bit passes is arranged inside the pneumatic cylinder, whereby the product can be made smaller and lighter.

In addition, due to the miniaturization and light weight of the screw fastening device, the screw fastening work is possible even in a narrow space where handling is easy and the fastening work is difficult.

In addition, it is possible to improve productivity and reduce the working radius of the worker due to the shortened time to take the screw during the screw fastening operation.

In addition, by stopping the screw fastening head after the predetermined interval back by the screw spring prevention compression spring, it is possible to prevent the phenomenon that the screw hits the fastening bit when screwed to the fastening head is separated.

In addition, the failure rate of the product can be reduced, reducing the work time, labor costs and personnel management costs and increase the efficiency of productivity.

The effects of the present invention are not limited to those mentioned above, and other effects that are not mentioned will be clearly understood by those skilled in the art from the following description.

1 and 2 are a plan view and a side cross-sectional view of the automatic screw supply and fastening device according to a preferred embodiment of the present invention
3 to 5 is a flow chart of the operation of the automatic screw feed and fastening device
FIG. 6 is a detailed view of the hollow cylinder shown in FIGS. 1 to 5.
Figure 7 is a perspective view showing an example of a fastening head of the screw automatic feeding and fastening device
8 is a perspective view showing another example of the fastening head of the screw automatic feeding and fastening device
9 to 12 is a product photograph of the screw automatic feeding and fastening device
13 to 23 are capture pictures showing the operation example of the automatic screw feed and fastening device in order

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted, and similar parts are denoted by similar reference numerals throughout the specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

screw  Embodiment of automatic feeding and fastening device

1 and 2 are a plan view and a cross-sectional side view of the automatic screw supply and fastening device according to a preferred embodiment of the present invention, Figures 3 to 5 is a flow chart of the operation of the automatic screw supply and fastening device, Figure 6 to Figures 1 to 5 is a detailed view of the hollow cylinder shown in FIG. 5.

As shown in FIGS. 1 to 6, the screw automatic feeding and fastening device of the present invention includes a housing 110, first and second cylinders 120 and 123, a piston 140, a moving pipe 150, and a fastening head ( 170, a screw feed head 180, a compression spring 190, and a screw fastening bit 130.

The first cylinder 120 may be configured as a pneumatic cylinder, it may be installed by fastening to one side of the housing 110. The first cylinder 120 has an opening formed at one side thereof, a cylindrical shape having a hole formed at the center of the other side thereof, and first and second air supply ports 121 and 122 penetrated into the inner space. A cylinder cover 125 is installed at one side opening of the first cylinder 120 to seal the inside of the first cylinder 120. To this end, the cylinder cover 125 is provided with a bush BUSH (126 in FIG. 6) and an O-ring (127 in FIG. 6) in the inner diameter of the shaft hole formed in the center thereof, and is reversed through the shaft hole. And airtightness is maintained between the moving pipe 150 of the piston 140 to be advanced.

The first air supply port 121 is disposed at a front end of the first cylinder 120, and the first cylinder 120 receives air supplied through a first air supply hose (see 320 in FIG. 9). Supply to the inner air room 124. At this time, the piston 140 located in the front end of the inside of the first cylinder 120 by the force of the air supplied to the air room 124 through the first air supply port 121 as shown in FIG. You will reverse.

The second air supply port 122 is disposed at the rear end of the first cylinder 120 and receives air supplied through a second air supply hose (see 330 of FIG. 9) from the first cylinder 120. Supply to the inner air room 124. At this time, the piston 140 located in the rear end of the inside of the first cylinder 120 by the force of air supplied to the air room 124 through the second air supply port 122 as shown in FIG. Go forward.

The second cylinder 123 may be installed by fastening a body to the other side of the first cylinder 120. The second cylinder 123 is formed integrally with the pipe shape in the center of the body, the pipe-shaped structure through the hole formed in the center of the other side of the first cylinder 120 the first cylinder 120 It is arrange | positioned to the inner space of the longitudinal direction. Therefore, the second cylinder 123 is disposed in the longitudinal direction of the first cylinder 120 in the center of the inner space of the first cylinder 120, the inner diameter of the first cylinder 120 and the second cylinder ( A space, that is, an air room 124 is formed between the outer diameters of the 123. The air room 124 is a space in which air is supplied through the first and second air supply ports 121 and 122 to reverse and advance the piston 140.

The piston 140 moves backward or forward along the second cylinder 123 in a space between the first and second cylinders 120 and 123 by air supplied to the first and second air supply ports 121 and 122. do. For example, the piston 140 is reversed by the air supplied through the first air supply port 121 disposed at the front end of the first cylinder 120, the first cylinder 120 of the The air is advanced by the air supplied through the second air supply port 122 disposed at the rear end.

The piston 140 is integrally formed with a moving pipe 150 on one side. The moving pipe 150 is formed to have a predetermined length out of the first cylinder 120 through the axial hole of the cylinder cover 125, so that the first cylinder 120 according to the forward and backward movements of the piston 140. ) Forward or backward into the first cylinder (120). At this time, an O-ring 127 is installed between the piston 140 and the second cylinder 123 to maintain the airtightness of the air room 124.

On the other hand, the inner diameter of the piston 140 and the moving pipe 150 is larger than the outer diameter of the second cylinder 123, the outer diameter of the piston 140 is larger than the outer diameter of the moving pipe 150 and the first It is smaller than the inner diameter of the cylinder 120.

The fastening head 170 is installed at one side of the moving pipe 150 and receives the screw 1 through the screw inlet 181 to mount the screw 1.

The fastening head 170 has a head body 160 connected to the moving pipe 150 and a jaw installed at one side of the head body 160 to receive and mount a screw through a screw inlet 181. JAW (172 of FIG. 7, 210 of FIG. 8), a screw supply head 180 for supplying the screw 1 to the jaws 172, 210 through the screw inlet 181, and the screw supply It is connected to the screw inlet 181 of the head 180 and includes a screw supply hose (see 310 in Fig. 9) for supplying the aligned screw (1) from the feeder (not shown) using compressed air.

The screw inlet 181 of the screw supply head 180 is connected to a screw supply hose 310 which receives one by one the screw 1 arranged from a feeder (not shown). The feeder is continuously fed through the screw supply hose 180 by arranging the screw 1 to have a predetermined posture and direction. At this time, the screw 1 is supplied to the screw inlet 181 through the screw supply hose 310 by compressed air. The screw supply head 180 in which the screw inlet 181 is formed is formed to be inclined at a predetermined angle from the central axis of the fastening head 170 so as to smoothly supply the screw 1.

The screw supply hose 310 may be mounted by selecting a size (diameter) according to the diameter of the head of the screw (1) to be fastened and the depth of the boss hole. The inner diameter of the screw supply hose 310 should be larger than the head dimension of the screw 1 (for example, 0.5 ~ 0.8mm or more), it may be used a soft and flexible material such as urethane.

The compression spring 190 is installed at an outer diameter of the moving pipe 150 positioned between the fastening head 170 and the cylinder cover 125, and is compressed and expanded according to the movement of the piston 140. . The compression spring 190 is installed for the purpose of preventing the detachment of the screw (1) when mounting and fastening the screw (1) to the fastening head 170. That is, the compression spring 190 stops the fastening head 170 after a predetermined interval when the piston 140 is reversed, so that the screw 1 hits the screw fastening bit 130 and is separated. Will be prevented.

Accordingly, the length of the compression spring 190 and the movable pipe 150 is such that the screw fastening bit 130 is mounted on the fastening head 170 when the fastening head 170 is retracted. It is preferable to determine within the range which is not pushed out.

The screw fastening bit 130 is rotatably installed in the inner hole (inner diameter) of the second cylinder 123 and the moving pipe 150, and fastens the screw 1 mounted to the fastening head 170. Done.

As shown in FIG. 3, the screw automatic supply and fastening device 100 is moved out of the first cylinder 120 while the piston 140 is advanced by the air supplied to the second air supply port 122. The screw inlet 181 is connected to the jaw JAW in the inner space of the fastening head 170 by advancing the moving pipe 150 and the moving pipe 150 is the screw fastening bit 130. Out of the feed through the screw inlet 181 to the jaw to supply the screw (1) is mounted.

Thereafter, as shown in FIGS. 4 and 5, by the air supplied to the first air supply port 121, the piston 140 moves backward into the first cylinder 120 while the piston 140 moves backward. ), And the screw inlet 181 is sealed to the screw fastening bit 130 while the fastening head 170 is retracted by the backward movement of the moving pipe 150 to supply the screw 1 to the jaw. Blocking, the screw fastening bit 130 is coupled to the screw (1) mounted on the jaw to fasten the screw (1).

Example of fastening head

7 is a perspective view showing an example of a fastening head of a screw automatic feeding and fastening device.

As an example of the fastening head 170 is located in the front end of the automatic screw supply and fastening device 100, as shown in Figure 7, the stepped by the elastic to hold the screw (1) is adjusted As a block-shaped member to which the screw grip part 171 is coupled, the screw grip part 171 may include a jaw (JAW) 172 and a jaw coupling ring 173.

The jaws 172 are inserted into and coupled to the grooves formed at intervals of 180 degrees on the wall of the fastening head 170, the front end is a short jaw shape, can be combined integrally to form one annular cross section. The jaw coupling ring 173 is a ring-shaped member having elasticity to fix the jaws 172 coupled to both sides thereof integrally with the fastening head 170.

When the jaws 172 are adjacent to each other, a space through which the screw 1 supplied through the screw inlet 181 may pass is formed at the center. In addition, a tapered space is formed at the end of the jaw 172 so that the head of the screw 1 that is supplied and passed through the screw inlet 181 may be seated.

The screw 1 supplied through the screw inlet 181 of the screw supply head 180 is mounted to the jaws 172 of the fastening head 170, and the screw fastening bit 130 is connected to the jaws 172. In combination with the screw (1) mounted on the) is to fasten the screw (1).

Another example of fastening head

8 is a perspective view showing another example of the fastening head of the screw automatic feeding and fastening device.

Another example of the fastening head (170,200) is located in the front end of the automatic screw supply and fastening device 100, as shown in Figure 8 is the stepped by elastic to hold the screw (1) A screw-shaped member 240 is coupled to the block-shaped member, when the screw fastening bit 130 is advanced and fastened to the screw 1, the jaw 210 is opened while leaving the screw (1).

The screw grip 240 may include a jaw 210 and a jaw coupling ring 230. The jaw 210 is inserted into the groove formed in the wall surface of the fastening head 200 at a predetermined interval (for example, the interval of 120 degrees), the shear is a short jaw shape, combined integrally one annular cross section Can be formed. In addition, an outer surface of the jaw 210 may be formed with a ring fixing groove 220 recessed.

The jaws 340 are composed of first, second and third jaws 211, 212, 213 coupled in three directions when integrally coupled, and the first, second and third jaws 211, 212, 213 are formed of the screw ( Each time 1) passes, the screw 1 is supported in three directions by being separated and coupled by 120 degrees in the lateral direction about a rotating shaft (not shown) formed at the rear end. Therefore, the screw 1 can be stably supported.

The jaw coupling ring 230 is a ring-shaped member having elasticity to be inserted into the ring fixing groove 220, and fixes the jaw 210 integrally to the outer circumferential surface of the fastening head 200.

When the jaws 340 are adjacent to each other, a space through which the screw 1 supplied through the screw inlet 181 passes is formed at the center. In addition, a tapered space is formed at the end of the jaw 340 so that the head of the screw 1 that is supplied and passed through the screw inlet 181 may be seated.

As such, the jaw coupling ring 230 is coupled to the ring fixing groove 220, whereby the position of the jaw coupling ring 230 is constant, thereby, uniform elastic force to the three jaws 210 This is provided.

Therefore, when the screw 1 supplied through the screw inlet 181 is fastened and then stopped after being fastened with the screw fastening bit 130, is separated from the fastening head 200 and fastened with the assembly object. The screw (1) can be stably coupled without twisting the shaft, thereby increasing productivity efficiency by reducing the failure rate of the product and shortening the working time.

Product example

9 to 12 are product photographs of the automatic screw feeding and fastening device, and FIGS. 13 to 23 are captured photographs sequentially showing an example of the operation of the automatic screw feeding and fastening device.

Referring to Figure 9, the automatic screw supply and fastening device 100 of the present invention may be implemented as a hand driver in the form of a pistol. Here, the screw automatic supply and fastening device 100 is a fastening head 170, compression spring 190, the moving pipe 150, the first and second cylinders (120, 123), piston 140, screw fastening bit ( 130, the housing 110, and the like are connected to the fastening driver body 103, and a handle 101 is formed. The handle 101 is configured with a switch 102 for operating the automatic screw supply and fastening device 100.

The screw inlet 181 of the screw supply head 180 is connected to a screw supply hose 310 for automatically supplying the screw 1 one by one, and air is supplied to the first and second air supply ports 121 and 122. The first and second air supply hoses 320 and 330 to supply are connected. In this case, the air supplied to the first air supply port 121 may reverse the piston 140 to mount the screw 1 to the fastening head 170, and to the second air supply port 122. The air to be supplied advances the piston 140 to fasten the screw 1 mounted to the fastening head 170.

13 to 23, the operation of the automatic screw supply and fastening device 100 of the present invention will be described in order as follows.

First, the piston 140 is advanced by supplying air to the second air supply port 121. As the compression spring 190 expands by the advancement of the piston 140, the moving pipe 150 connected with the piston 140 advances out of the first cylinder 120.

Thereafter, the screw inlet 181 connected to the jaws JAW in the inner space of the fastening head 170 by the advancement of the moving pipe 150 leaves the screw inlet bit 130 while the screw inlet ( The screw 1 is fed to the jaw via 181. As a result, the screw 1 supplied from the jaws of the fastening head 170 is mounted.

Thereafter, air is supplied to the first air supply port 122 to reverse the piston 140. As the compression spring 190 is compressed by the reverse of the piston 140, the moving pipe 150 is retracted into the first cylinder 120.

Thereafter, the screw head 181 is closed by the screw fastening bit 130 while the fastening head 170 is reversed by the backward movement of the moving pipe 150 to block the supply of the screw 1 to the jaw. do.

Thereafter, when the compression spring 190 is compressed by a predetermined length by the backward of the fastening head 170, the screw fastening bit 130 is engaged with the screw 1 mounted on the jaw and the screw 1 )

By repeating the above process according to the switch 102 signal of the automatic screw supply and fastening device 100, the screw 1 is automatically fastened.

The automatic screw feed and fastening device of the present invention may be embodied to be liftable so as to be located in a part in which a fastening ball is formed. The screw automatic feeding and fastening device can also be used for other means that can controllably change the position of the fastening device. For example, the automatic screw feed and fastening device is attached to the operating part of the robot, so that the screw auto feed and fastening device can be controlled to automatically move to the position of the fastening hole of the part according to the program.

The screw automatic feeding and fastening device of the present invention configured as described above has a technical problem of the present invention by arranging a pneumatic cylinder on the axis of the screw fastening bit and another cylinder through which the screw fastening bit passes. I can solve it.

In addition, the present invention can solve the technical problem of the present invention by preventing the screw from hitting the fastening bit to stop the screw fastening head to stop after the predetermined interval by the screw spring prevention compression spring.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present invention without departing from the spirit or scope of the present invention as defined by the appended claims. It will be appreciated that such modifications and variations are intended to fall within the scope of the following claims.

1: screw
100: screw automatic feeding and fastening device
101: knob 102: switch
103: fastening driver body 104: power cable connection
110 housing 120 first cylinder
121: first air supply port 122: second air supply port
123: second cylinder 124: air room
125: cylinder cover 126: bush (BUSH)
127: O-ring 128: O-ring
130: screw fastening bit 131: bit shaft
140: piston 150: moving pipe
160: head body 170: fastening head
171: screw grip 172: jaw (JAW)
173: jaw coupling ring 180: screw feed head
190: compression spring 200: tightening head
210: JAW 211: JAW
212: JAW 213: JAW
220: ring fixing groove 230: encounter coupling ring
240: screw grip 310: screw supply hose
320: first air supply hose 330: second air supply hose

Claims (8)

A first cylinder having first and second air supply ports penetrating into the inner space;
A pipe-shaped second cylinder disposed in the longitudinal direction in the inner space of the first cylinder;
A piston that retracts or advances along the second cylinder in a space between the first and second cylinders by air supplied to the first and second air supply ports;
A moving pipe integrally formed on one side of the piston and having a predetermined length out of the first cylinder;
A fastening head installed at one side of the moving pipe and configured to receive a screw through a screw inlet and mount the screw;
A compression spring installed at an outer diameter of the moving pipe positioned between the fastening head and the first cylinder and compressed and expanded according to the movement of the piston; And
A screw fastening bit rotatably installed in the inner hole of the second cylinder and the moving pipe, the screw fastening bit rotatingly fastening the screw mounted to the fastening head;
Screw automatic feeding and fastening device comprising a.
The method of claim 1,
The screw automatic feeding and fastening device is:
Air supplied to the second air supply port advances the moving pipe out of the first cylinder while advancing the piston, and is connected to the jaw in the internal space of the fastening head by advancing the moving pipe. As the screw inlet is out of the screw fastening bit, the screw is supplied to the jaw through the screw inlet and mounted thereon,
By means of the air supplied to the first air supply port, the piston is moved backward into the first cylinder while retracting, and the screw inlet is screwed while the fastening head is reversed by the backward of the moving pipe It is sealed in the bit to block the supply of the screw to the jaw, and the screw fastening bit is coupled to the screw mounted to the jaw to fasten the screw,
Screw automatic feeding and fastening device.
The method of claim 1,
The first cylinder has a cylindrical shape in which an opening is formed at one side and a hole is formed at the center of the other side, and a cylinder cover is installed at the opening.
The second cylinder is installed on the other side of the first cylinder, is disposed in the longitudinal direction in the inner space of the first cylinder through the other hole of the first cylinder,
The moving pipe is integrally formed on one side of the piston, and formed to a predetermined length out of the first cylinder through the axial hole of the cylinder cover,
Screw automatic feeding and fastening device.
The method of claim 1,
The inner diameter of the piston and the moving pipe is larger than the outer diameter of the second cylinder,
The outer diameter of the piston is larger than the outer diameter of the moving pipe and smaller than the inner diameter of the first cylinder,
And the length of the compression spring and the moving pipe is determined within a range in which the screw fastening bit does not push out the screw mounted to the fastening head when the piston is retracted.
The method of claim 1,
The fastening head is:
Head body;
A jaw installed on one side of the head body to receive and mount a screw;
A screw feed head connected to the jaw through the inside of the head body to the jaw;
A screw supply hose connected to the screw inlet of the screw supply head and supplying the aligned screw from the feeder using compressed air;
Screw automatic feeding and fastening device comprising a.
The method of claim 5,
The fastening head is:
A plurality of jaws (JAW) inserted into and coupled to grooves formed at predetermined intervals on the wall of the fastening head, the shear being short in shape, and integrally coupled to form one annular cross section; And
A ring-shaped jaw coupling ring fixed to an outer circumferential surface of the jaw and the fastening head and having an elasticity;
Screw automatic feeding and fastening device comprising a.
In the method of operating the automatic screw supply and fastening device of claim 1,
(a) advancing the piston by supplying air to the second air supply port;
(b) advancing the moving pipe connected to the piston out of the first cylinder by advancing the piston and expanding the compression spring;
(c) feeding the screw into the jaw through the screw inlet while the screw inlet connected to the jaw in the inner space of the fastening head by the advancing of the moving pipe leaves the screw fastening bit;
(d) mounting a screw supplied in the jaws of the fastening head;
(e) supplying air to the first air supply port to reverse the piston;
(f) retracting the moving pipe into the first cylinder while the compression spring is compressed by the retraction of the piston;
(g) blocking the supply of the screw to the jaws by closing the screw inlet to the screw fastening bit while the fastening head is retracted by the reverse of the moving pipe;
(h) fastening the screw by engaging the screw fastening bit with a screw mounted to the jaw when the compression spring is compressed by a predetermined length by the backward of the fastening head; And
(i) repeating steps (a) to (h);
Method of operation of the automatic screw supply and fastening device comprising a.
The method of claim 7, wherein
The operating method of the automatic screw feed and fastening device is:
And a method of automatically supplying and fastening a screw to determine the length of the compression spring and the moving pipe within a range in which the screw fastening bit does not push out the screw mounted in the jaw when the piston is retracted.

Images