KR100730484B1 - Stud classifier - Google Patents

Abstract

A stud classifier is provided to improve productivity and work efficiency by preventing an assembly line of top and bottom chassis from stopping due to bad studs, by supplying only good studs all the time. The stud classifier is composed of a stud aligning unit having a vibrating body(10) equipped with a vibrator and disposed at the lower side, a stud storage tub(12) installed at the upper side to store plural studs, and an aligning tub having a spiral advancing passage(14) transferring the studs from the storage tub with aligning the studs in a line; a stud supply unit installed at the final stud discharge side of the stud aligning unit; a stud transferring unit having settling grooves(30) formed along the outer peripheral surface at regular intervals to settle each stud fed from the stud supply unit; a driving unit combined at the bottom side of the stud transferring unit to rotate the stud transferring unit at predetermined speed; a first bad stud removing unit detecting and extracting the studs longer than the desirable length settled in the stud transferring unit; a second bad stud removing unit detecting and extracting the studs shorter than the desirable length settled in the stud transferring unit; a good stud withdrawing unit withdrawing the studs with the desirable length; and a control panel unit(62) receiving a sensing signal generated from the first and second bad stud removing units, deciding whether to remove the bad stud or not, and regularly operating the stud aligning unit, the stud supply unit, the driving unit, and the stud transferring unit.

Description

Stud classifier

1 is a perspective view showing the overall appearance of a stud separator according to the invention,

Figure 2 is a perspective view showing the structure of the stud supply unit of the stud separator according to the present invention,

3 and 4 are a perspective view showing the structure of the stud detector of the stud selector according to the present invention,

Figure 5 is a perspective view showing the structure of the good stud discharge portion of the stud separator according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10 vibrating body 12 stud reservoir

14: forward path 16: stud

18: information board 20: waiting home

22: acrylic plate 24: air hose

26: first air nozzle 28: the rotating plate

30: mounting groove 32: support

34: guide roller 36: pressing body

38: spring 40: sensor block

42: guide hole 44: proximity sensor

46: screw 48: guide bar

50: adjusting knob 52: the first blowout pipe

54: blowout container 56: the second air nozzle

58: air supply pipe 60: connection hose

62: control panel unit 64: second outlet pipe

66: third air nozzle 68: stopper end

70: blade end of the oblique line 72: ejection information board

The present invention relates to a stud selector, and more particularly, a stud is used as a coupling means of a top chassis and a bottom chassis that surround and support the appearance of a display device such as a TV or a monitor. It relates to a stud sorter that automatically sorts good products.

In the recent information society, liquid crystal displays (LCDs) are increasingly being applied to such fields as portable video cameras, TVs, car navigation systems, and computer monitors.

Unlike conventional CRTs, liquid crystal displays (LCDs) have a very low power consumption, and because of their advantages of being thin and light because they do not use an electron gun, they have received great attention as display devices of information devices such as notebook computers and monitors.

LCD displays images or characters by changing the transmission characteristics of crystals to light by applying a power supply voltage to the liquid crystal material. Since the liquid crystal material itself is very fragile, the actual LCD element is mounted in the mainframe and the outside It is produced in a structure that wraps with a predetermined protective chassis.

For example, an LCD monitor may include a module consisting of a liquid crystal material constituting a screen, a main frame surrounding the exterior of the module, a PCB assembly having a circuit such that an electrical signal applied to the module realizes each image, and the components It consists of a number of fastening structures such as a top chassis and a bottom chassis forming a case so that the case can be formed.

In addition, the TV also supports the frame of the module constituting the screen using the top chassis and the bottom chassis.

The stud is a fastening means of the top chassis and the bottom chassis, and a screw hole is formed in the inner diameter surface thereof, and the diameter of the head is larger.

A large number of studs are required for fastening the top chassis and the bottom chassis, and a plurality of studs are consumed again for fastening the bottom chassis with another top chassis as a continuous process. It is being consumed.

However, the top chassis and the bottom chassis are mounted only when the studs for fastening the top chassis and the bottom chassis are of a certain length, so the studs of shorter or longer lengths are sometimes mixed. There was a problem that the mounting of the bottom and the time is not made.

In other words, because a number of studs shipped from the stud manufacturer are sometimes mixed with a defective stud longer than or below a desired length, the top chassis and the bottom chassis are not properly mounted on the assembly line of the top chassis and the bottom chassis. This leads to quality deterioration problems such as product defects.

The present invention was developed to solve the above problems, in the top chassis and the bottom chassis which is attached to the edge of the module constituting the monitor screen for the TV or LCD, the area of the top chassis and the bottom chassis, It is an object of the present invention to provide a stud selector for automatically sorting studs to a desired length of goodness and defective items longer or less than the desired length.

The present invention for achieving the above object is of a structure in which a vibrating body in which the vibrator is built is arranged in the lower portion, the upper portion of the storage container is stored a plurality of studs and the spiral forward passage in which the studs are aligned and transported in a row from the reservoir. Stud alignment means having an alignment cylinder; Stud supply means mounted to a final stud outlet of said stud alignment means; A stud feed means having a structure in which a plurality of studs are provided at equal intervals so that the respective studs supplied from the stud feed means are inserted and mounted; First defective stud removing means for detecting and extracting a length of a stud mounted on the stud conveying means more than a desired length; A second defective stud removing means for detecting and extracting a stud mounted on the stud conveying means having a length less than a desired length; Good-quality stud takeout means for taking out a stud of a desired length mounted on the stud feeder; A control panel that receives the sensing signals made by the first and second bad stud removing means and determines whether to remove the bad studs and controls the regular operation of the stud alignment means, the stud supply means, and the stud feed means. It provides a stud selector, characterized in that consisting of parts.

The stud supply means includes: a guide plate mounted at an end of the forward passage of the stud alignment means and having an atmospheric groove through which the stud is drawn from the forward passage; An acrylic plate attached to an upper surface of the guide plate to adjust the head height of the studs in parallel and to prevent separation; And a first air nozzle attached to the side of the forward passage and providing air pressure to the stud drawn into the atmospheric groove of the guide plate.

The stud transfer means includes: a support on which a motor is built; It is disposed on the upper surface of the support is rotatably coupled to the shaft of the motor, the circumferential surface is characterized in that consisting of a rotating plate formed with stud mounting grooves of equal intervals.

In a preferred embodiment, the pressing body in contact with the head of the stud mounted to the mounting groove along the circumferential direction in the upper surface of the rotating plate is attached, the middle portion of the pressing body is hinged to the upper surface of the rotating plate, the rear end Is supported by a spring attached to the upper surface of the rotating plate, characterized in that the bottom surface of the front end is in contact with the head of the stud.

In a more preferred embodiment, the bottom surface of the rotating plate is characterized in that the plurality of guide rollers that are in close contact with the circumferential surface of the support is further mounted.

The first bad stud removing means is a means for removing a bad stud more than a desired length, is fixedly mounted to the side end of the support and the upper end is arranged to match the mounting groove of the rotating plate, the lower end of the first take out extending Tube; First sensing means disposed at a bottom of the rotating plate and disposed at a side end of the support so that height can be adjusted; A second air nozzle disposed on the bottom surface of the rotating plate and mounted and fixed to the side circumferential surface of the support to provide air pressure toward the stud mounted on the mounting groove of the rotating plate; An air supply pipe connected to a bottom of the second air nozzle; It characterized in that the connection hose is connected between the air supply pipe and the air supply device.

The second bad stud removing means is a means for removing a bad stud of a desired length or less, the second end is fixedly mounted to the side end of the support is arranged in accordance with the mounting groove of the rotating plate, the lower end of the second extending into the drawer Blower pipe; Second sensing means disposed on a bottom of the rotating plate and disposed at a side end of the support so that height can be adjusted; A third air nozzle disposed on a bottom surface of the rotating plate and mounted and fixed to a side end circumferential surface of the support to provide air pressure toward a stud mounted in a mounting groove of the rotating plate; An air supply pipe connected to a bottom of the third air nozzle; It characterized in that the connection hose is connected between the air supply pipe and the air supply device.

In a preferred embodiment, the first sensing means and the second sensing means comprise: a sensor block; A guide bar inserted into a guide hole vertically penetrated to one side of the sensor block to serve as a guide when adjusting the lifting height of the sensor block; A proximity sensor inserted into and fixed to an upper surface of a central portion of the sensor block; Screws inserted through the up and down to adjust the height of the sensor block on the other side of the sensor block; It is characterized by consisting of a control knob coupled to the lower end of the screw penetrates to the bottom of the side end of the support to control the rotation of the screw.

The article stud takeout means is a means for taking out a stud of good article which is not detected by the first and second defective article removing means, the upper end of which is mounted on the support and hits the head of the stud raised upward from the mounting groove of the rotating plate. A stopper plate formed at an oblique blade end so as to be diagonal; And a take-out guide plate fixedly mounted to the support to guide the studs of the good falling on the stopper end to the takeout tube.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing the overall appearance of a stud separator according to the present invention.

The present invention is a sorter for automatically sorting the studs used to combine the top chassis and bottom chassis components included in the monitor for TV or LCD into good and bad, as shown in FIG. The sensing means, the stud supply means mounted to the discharge portion of the stud alignment unit, the stud feed means that rotates while the individual studs supplied from the stud supply means is inserted and mounted, the sensing and taking out more than the desired length of the stud A first bad stud removing means for detecting, a second bad stud removing means for detecting and taking out a desired length of the studs, a good stud taking means for taking out a desired length of the studs, and a control for controlling the means. It can be divided into panels.

The stud alignment means is composed of a vibrating body (10) with a vibrator (not shown) and a stud reservoir (12) seated and coupled to an upper portion of the vibrating body (10), the inner wall of the stud reservoir (12) The spiral stud advance passage 14 is formed from below to upward.

Accordingly, when a plurality of studs 16 are poured into the stud reservoir 12 and the vibrator is operated, the vibrator 10 vibrates, and the studs 16 are lowered along the spiral forward passage 14. Aligned upwards, they move forward.

2 is a perspective view showing the structure of the stud supply unit of the stud separator according to the present invention.

As shown in Figure 2, the stud supply means is a means for supplying the studs 16 discharged from the stud alignment means to the stud transfer means one by one, the guide plate 18 of one configuration is the forward passage of the stud alignment means (14) It is mounted at the end.

In addition, the upper surface of the guide plate 18 is formed with an atmospheric groove 20 through which the stud 16 is introduced from the forward passage 14.

In addition, the acryl plate 22 is attached to the upper surface of the guide plate 18, which accompanies the head height of the stud 16 in parallel, and serves to prevent detachment.

At this time, the first air nozzle (26) connected to the air supply device (not shown) and the air hose 24 is mounted to the side of the forward passage (14) to the standby groove (20) of the guide plate (18) Air pressure is provided to the introduced stud 16.

Therefore, when the stud 16 is introduced from the advancing passage 14 of the stud alignment means into the atmospheric groove 20 of the guide plate 18 with the head facing upward, the first air nozzle 26 The air is injected into the mounting groove 30 formed on the circumferential surface of the rotating plate 28 of the stud transfer means to be described later.

Here, the configuration and operation of the stud transfer means will be described.

The stud conveying means comprises a support 32 in which a motor (not shown) is installed, and a rotating plate 28 disposed on an upper surface of the support 32 and rotatably coupled to an axis of the motor.

The rotating plate 28 is a circular plate body, the center portion of the bottom surface is connected to the axis of the motor to be rotatable, and the bottom surface of the rotating plate 28 is in close contact with the circumferential surface of the support 32, a number of clouds Two guide rollers 34 are mounted to make the rotation of the rotating plate 28 more stable.

In particular, the outer periphery of the rotating plate 28 is formed with a stud mounting groove 30 of equal intervals, the mounting groove 30 in the stud 16 aligned with the atmospheric groove 20 of the guide plate 18. ) Is inserted by the air pressure injected from the first air nozzle (26).

More specifically, the air pressure of the first air nozzle 26 is injected to the studs aligned with the atmospheric groove 20, while the rotary plate 28 is rotated at a constant speed by the motor drive of the support 32 In the state, the stud 16 is continuously pushed toward the rotating plate 28 by the air pressure bar, the mounting groove 30 only when the stud 16 coincides with the mounting groove 30 of the rotating plate 28 If the state is matched with the circumferential surface (surface without surface groove) of the rotating plate 28, it will continue to stay in the atmospheric groove 20 without being pushed against the circumferential surface (surface without surface groove).

On the other hand, the pressing body 36 is attached to the head of the stud 16 mounted to the mounting groove 30 in the circumferential direction on the upper surface of the rotating plate 28 is attached.

The middle portion of the pressing body 36 is hinged to the upper surface of the rotary plate 28, the rear end is supported by a spring (attached to the upper surface of the rotary plate 28, the bottom of the front end of the head of the stud 16 The state comes into contact with.

That is, when the front end of the pressing body 36 is lifted, the spring 38 connected to the rear end thereof is compressed, and when the front end of the pressing body 36 is left as it is, the original position is restored by the restoring force of the spring 38 connected to the rear end thereof. The bottom surface of the pressing body 36 is slightly in contact with the head of the stud 16 while the stud is mounted in the mounting groove 30 of the rotating body 28. It becomes a state.

Accordingly, the pressing body 36 prevents the stud 16 from escaping upward from the mounting groove 30 and at the same time maintains the stud head at a constant height.

As such, the stud 16 mounted in the mounting groove 30 of the rotating body 28 is transferred to the first and second bad stud removing means based on the rotation of the rotating plate 28, and in the case of a defect, is removed. If it is transferred to the good stud removal means, it is determined to be good and taken out to the good container.

Here, the configuration and operation of the first bad stud removing means are as follows.

3 and 4 are perspective views illustrating a stud detector of the stud separator according to the present invention.

The first bad stud removing means is a means for detecting and removing a bad stud having a desired length or more.

A first sensing means is provided as a means for detecting a bad stud of a desired length or more. The first sensing means is disposed at the bottom of the rotating plate 28 and at the same time, the height of the support 32 is adjustable. Is placed.

The rectangular sensor block 40 serving as a skeletal body of the first sensing means is provided. A guide hole 42 penetrates up and down is formed at one side of the sensor block 30, and a proximity sensor is formed at the center of the sensor block 40. 44 is inserted and fixed up and down, the screw 46 for height adjustment of the sensor block 40 is inserted into the other side.

The guide bar 48 is inserted into the guide hole 42 of the sensor block 40 to serve as a guide when adjusting the raising and lowering height of the sensor block 40. The lower end of the guide bar 48 is the support stand. It is fixed to the side end part of (32).

In addition, the lower end of the screw 46 penetrates the side end of the support 32 to the bottom, and the adjustment knob 50 for rotating the screw 46 is attached to the lower end of the penetrated screw 46.

Therefore, when the adjustment knob 50 is rotated, the screw 46 is rotated in place, and subsequently the sensor block 40 is guided by the guide bar 48 to move up or down to adjust its height. As a result, the height of the proximity sensor 44 inserted into the center of the sensor block 40 is adjusted.

That is, the distance between the bottom surface of the stud 16 mounted on the mounting groove 30 of the rotating plate 28 and the proximity sensor 44 is adjusted to a desired sensing level.

On the other hand, the first ejection pipe 52 is fixedly mounted to the side end of the support 32 in a position coinciding with the mounting groove 30 of the rotating plate 28, the upper end of the first ejection pipe 52 Is arranged to match the mounting groove 30 of the rotating plate 28, the lower end extends to the take-out tube 54 for storing the bad stud more than the desired length.

In addition, when it is determined that the stud mounted in the mounting groove 30 of the rotating plate 28 is bad, the second air nozzle 56 which provides air pressure to the stud and drops it is the bottom surface of the rotating plate 28. The air supply pipe 58 is connected to the bottom of the second air nozzle 56 at the same time, and is fixed to the side end circumferential surface of the support 32. The air supply pipe 58 is an air supply device ( It is connected to the hose 60 and the connection hose (not shown).

Therefore, the proximity sensor 44 detects the distance to the bottom surface of the stud 16 mounted on the mounting groove 30 of the rotating plate 28 and transmits the signal to the control unit of the control panel 62. If the sensing distance is shorter than the reference value (the length of the stud is close to the proximity sensor), it is judged as a bad stud more than the desired length and sends an operation signal to the air supply, and the air generated from the air supply is The air is blown out through the second air nozzle 56 via the hose 60 and the air supply pipe 58.

Accordingly, the air pressure ejected from the second air nozzle 56 is injected into the stud (defective stud over the desired length) which is mounted in the mounting groove 30 of the rotating plate 28, so that the stud 16 is placed in the mounting groove. At the same time as falling off from 30, it is collected to the blowout container 54 via the said 1st blowout pipe 52. As shown in FIG.

Here, the configuration and operation of the second bad stud removing means will be described.

The second bad stud removing means is a means for removing a bad stud having a desired length or less, and is the same in construction as the first bad stud removing means described above.

The second bad stud removing means is fixedly mounted to the side end of the support like the first bad stud removing means, the upper end of which is arranged to coincide with the mounting groove of the rotating plate, and the lower end of which extends into the outlet 54. The second sensing means disposed on the tube 64, the bottom of the rotary plate 28, and at the side end of the support 32 so that the height can be adjusted, and the bottom of the rotary plate 28. A third air nozzle 66 mounted and fixed to the side circumferential surface of the support 32 to provide air pressure toward the stud 16 mounted to the mounting groove 30 of the rotating plate 28, and the third It consists of an air supply pipe 58 connected to the bottom of the air nozzle 66, and a connection hose 60 connected between the air supply pipe 58 and the air supply device.

However, the proximity sensor detection operation of the second bad stud removing means proceeds differently.

Therefore, the proximity sensor 44 of the second bad stud removing means detects the distance to the bottom surface of the stud 16 mounted on the mounting groove 30 of the rotating plate 28 to detect the distance of the control panel 62. When the sensing distance is farther than the reference value (the stud is too short to move away from the proximity sensor), the control unit transmits the signal to the control unit and sends an operation signal to the air supply device. Air generated from the supply device is ejected through the third air nozzle 66 via the connection hose 60 and the air supply pipe 58.

Accordingly, the air pressure blown out from the third air nozzle 66 is injected against the stud (defective stud of the desired length or less) which is mounted in the mounting groove 30 of the rotating plate 28, so that the stud 16 At the same time as the dropout from the mounting groove (30) is collected to the take-out tube 54 through the second take-out pipe (64).

Here, the configuration and operation of the good stud extraction means according to the present invention will be described.

5 is a perspective view showing the structure of the good stud discharge portion of the stud separator according to the present invention.

The article stud extraction means is a means for separately taking out studs of the article not detected by the first and second defective article removing means.

A stopper end 68 is provided as a substantial means for taking out good quality studs, and the lower end of the stopper end 68 is fixed to the support 32 and the upper end thereof is a mounting groove 30 of the rotating plate 28. It is formed of a diagonal blade end 70 so as to strike the head of the stud 16 raised from the top.

That is, the oblique blade end 70 is located on the upper surface of the rim of the rotary plate 28, the head of the stud (16) raised from the mounting groove 30 that moves with the rotation of the rotary plate 28, that is, The studs of the good are then dropped onto the take-out guide plate 72 fixedly mounted to the support 32, and collected by the take-out container 54 supported thereunder.

As such, the top stud and bottom chassis of the top chassis and bottom chassis are removed by sequentially removing the bad studs having a desired length and the bad studs having a desired length. Only good quality studs will always be provided on the assembly line.

As seen above, according to the stud sorter according to the present invention, by automatically sorting the studs of the top chassis and the bottom chassis constituting the monitor for TV or LCD with a good length of the desired length and a defective product of more than or less than the desired length In addition, there is an advantage that only good quality studs can always be supplied to the assembly line of the top chassis and the bottom chassis.

That is, since only good studs can be provided, the assembly line of the top chassis and the bottom chassis does not stop due to the existing stud defects, thereby greatly improving productivity and workability.

As a result, by providing only studs of good quality, it is possible to easily install the top chassis and the bottom chassis in the assembly line of the top chassis and the bottom chassis, thereby improving the product quality.

Claims (9)

A stud alignment means having an oscillator having a vibrator arranged in a lower portion thereof, and an upper portion of which an alignment cylinder having a structure in which a plurality of studs are stored and a spiral forward passage through which studs are aligned and transferred from the reservoir are arranged; Stud supply means mounted to a final stud discharge portion of the stud alignment portion; A stud feed means having a structure in which a groove is formed at equal intervals on an outer circumferential surface so that individual studs supplied from the stud supply unit are inserted and mounted; Drive means coupled to a bottom of the stud feeder to rotate a stud feeder at a predetermined speed; First defective stud removing means for detecting and extracting a predetermined length or more of the studs mounted on the stud transfer unit; Second bad stud removing means for detecting and extracting a stud under the desired length from the stud mounted on the stud transfer unit; Good-quality stud takeout means for taking out a stud of a desired length mounted on the stud feeder; Receiving the sensing signal made by the first and second bad stud removing means and at the same time determine whether or not to remove the bad stud, and the control function for the regular operation of the stud alignment means, stud supply means, drive means, stud transfer means Stud sorter consisting of a control panel. The method according to claim 1, The stud supply means is: A guide plate mounted at an end of the forward passage of the stud alignment means and having an atmospheric groove through which the stud is drawn from the forward passage; An acrylic plate attached to an upper surface of the guide plate to adjust the head height of the studs in parallel and to prevent separation; And a first air nozzle attached to a side of the forward passage to provide air pressure to the stud drawn into the atmospheric groove of the guide plate. The method according to claim 1, The stud feed means is: A support having a motor built therein; The stud selector is disposed on the upper surface of the support and rotatably coupled to the shaft of the motor, the circumferential surface is composed of a rotating plate formed with equally spaced stud mounting groove. The method according to claim 3, A pressing body is attached to the head of the stud mounted to the mounting groove along the circumferential direction of the upper surface of the rotating plate, the middle portion of the pressing body is coupled to the upper surface of the rotating plate by a hinge, the rear end is attached to the upper surface of the rotating plate Stud selector, characterized in that supported by the spring, the bottom of the front end is in contact with the head of the stud. The method according to claim 3 or 4, Stud sorter, characterized in that the bottom of the rotating plate is further mounted with a plurality of guide rollers that are in close contact with the circumferential surface of the support. The method of claim 1, wherein the first bad stud removing means is a means for removing bad studs having a desired length or more. A first take-out tube fixedly mounted to the side end of the support, the upper end of which is aligned with the mounting groove of the rotating plate, and the lower end of which extends into the takeout tube; First sensing means disposed at a bottom of the rotating plate and disposed at a side end of the support so that height can be adjusted; A second air nozzle disposed on the bottom surface of the rotating plate and mounted and fixed to the side circumferential surface of the support to provide air pressure toward the stud mounted on the mounting groove of the rotating plate; An air supply pipe connected to a bottom of the second air nozzle; Stud separator comprising a connection hose connected between the air supply pipe and the air supply device. The method of claim 1, wherein the second bad stud removing means is a means for removing a bad stud less than a desired length, A second take-out tube fixedly mounted to the side end of the support, the upper end of which is aligned with the mounting groove of the rotating plate, and the lower end of which extends into the takeout tube; Second sensing means disposed on a bottom of the rotating plate and disposed at a side end of the support so that height can be adjusted; A third air nozzle disposed on a bottom surface of the rotating plate and mounted and fixed to a side end circumferential surface of the support to provide air pressure toward a stud mounted in a mounting groove of the rotating plate; An air supply pipe connected to a bottom of the third air nozzle; Stud separator comprising a connection hose connected between the air supply pipe and the air supply device. The method according to claim 6, The first sensing means is: A height and height adjustable sensor block; A guide bar inserted into a guide hole vertically penetrated to one side of the sensor block while a lower end thereof is fixed to a support to serve as a guide when adjusting the height of the sensor block; A proximity sensor inserted into and fixed to an upper surface of a central portion of the sensor block; Screws inserted through the up and down to adjust the height of the sensor block on the other side of the sensor block; Stud selector, characterized in that consisting of a control knob coupled to the lower end of the screw penetrates to the bottom of the side end of the support to control the rotation of the screw. The method of claim 1, wherein the article stud takeout means is a means for taking out a stud of a good article not detected by the first and second defective article removing means, A stopper plate which is mounted on the support and at the same time the upper end is formed of an oblique blade end so as to strike the head of the stud raised upward from the mounting groove of the rotating plate; Stud selector, characterized in that consisting of the take-out guide plate fixedly mounted to the support to guide the studs of the good falling on the stopper end to the take-out container.

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