KR20060100508A - Auto cleaning apparatus for joint means - Google Patents

Abstract

The present invention relates to a cleaning means for the fastening element for automatically cleaning the fastening elements such as bolts and nuts without the need for a separate operator; A housing 102 in which upper and lower parts are sealed and an inlet port 102a into which a fastening element is introduced and a discharge port 102b for discharging the fastened element are formed; An inner peripheral surface of the housing 102 is placed in a horizontal state so as to transfer the fastening element 1 transferred from the inlet 102a to the outlet 102b in a helical direction. A washing drum 110 formed at a surface thereof and having a plurality of through holes 114 maintaining a predetermined interval and rotating by the driving motor 106; Located in the lower portion of the washing drum 110, the washing liquid is filled and the lower side of the washing drum is locked; characterized in that consisting of.

According to the present invention, the cutting oil and burr, etc. generated during the processing of the fastening element are automatically removed and washed, and the washing liquid containing impurities after washing is regenerated by distillation means and re-introduced into the washing means. It is effective in reducing environmental pollution by reducing the consumption of cleaning liquid.

 Bolts, Nuts, Wash, Dry, Wash Liquid

Description

Automatic cleaning apparatus for joint means

1 is a plan view showing an automatic cleaning system of a fastening element according to the present invention.

Figure 2 is a front view of the automatic cleaning system of the fastening element according to the present invention.

3 is a cross-sectional view of a basket according to the present invention.

4 is a plan view of the cleaning means according to the invention.

5 is a front view of the washing means according to the present invention.

6 is a cross-sectional view of the washing drum according to the present invention.

7 is a cross-sectional view of the distillation means according to the present invention.

*** Description of the symbols for the main parts of the drawings ***

1: fastening element 100: cleaning means

102: housing 110: cleaning drum

104a, 104b, 105a, 105b: roller 106: drive motor

120a: basic cleaning bath 120b: ultrasonic cleaning bath

120c: rinse tank 122a, 122b: partition wall

124a, 124b, 124c, 153: Heater 125a, 125b, 125c: Temperature sensor

127a, 127b, 127c: washing liquid outlet 130: main tank

132: auxiliary tank 140a, 140b: cooling coil

147: bucket conveyor 150: distillation means

The present invention relates to an automatic cleaning means of the fastening element, and more particularly to a cleaning means for automatically cleaning the fastening elements such as bolts and nuts without the need for a separate operator.

In general, fastening elements such as bolts and nuts are made through forging, casting, cutting, etc. During processing, the processing oil, burrs, and other foreign matters are buried or formed on the surface of the parts. It is used in various machinery and industrial sites.

At this time, in order to remove the processing oil, burrs and other foreign matters, a certain washing and drying process is required, and in the related art, the washing efficiency is reduced by shaking the fastening elements depending on manual processes, and the washing efficiency is lowered. The cleaning solution used to harm the health of the worker had a problem.

On the other hand, conventionally, after washing the fastening element several times using a washing solution, it cannot be used again, thus causing a problem of polluting the environment, and at the same time, to regenerate it again, it must be regenerated by using a separate device. I could not have had a problem.

In addition, conventionally, when carrying a fastening element for cleaning the fastening element, the load of the fastening element is large, so a separate transport means must be used, which is inefficient and causes a lot of accidents, resulting in a long working time. there was.

Therefore, to solve these problems, the object of the present invention is to provide an automatic cleaning means of the fastening element for automatically washing the fastening element without the need for an operator.

Another object of the present invention is to provide an automatic cleaning means of the fastening element that can be used by removing the cutting oil and burrs, etc., which are caught in the gap during the cleaning process by ultrasonic cleaning, and regenerating the cleaning solution again.

The present invention relates to a cleaning means for the fastening element; A housing 102 in which upper and lower parts are sealed and an inlet port 102a into which a fastening element is introduced and a discharge port 102b for discharging the fastened element are formed; An inner peripheral surface of the housing 102 is placed in a horizontal state so as to transfer the fastening element 1 transferred from the inlet 102a to the outlet 102b, but protrudes inward in a spiral direction. A washing drum 110 formed at a surface thereof and having a plurality of through holes 114 maintaining a predetermined interval and rotating by the driving motor 106; Located in the lower portion of the washing drum 110, the washing liquid is filled and the lower side of the washing drum is locked; characterized in that consisting of.

With reference to the accompanying drawings, the automatic cleaning means of the fastening element according to the present invention will be understood by the embodiments described in detail below.

1 is a plan view showing an automatic cleaning system of the fastening element according to the invention, Figure 2 is a front view showing an automatic cleaning system of the fastening element according to the invention, Figure 3 is a cross-sectional view of the basket according to the invention, Figure 4 is a plan view of the washing means according to the invention, Figure 5 is a front view of the washing means according to the invention, Figure 6 is a sectional view of the washing drum according to the invention, Figure 7 is a distillation means according to the invention It is a cross section.

According to FIGS. 1 to 7, the automatic cleaning system of the fastening element according to the present invention includes a conveying means for conveying the fastening element 1 from the supply container 7 in which the fastening element 1, such as a bolt or nut, is contained; Washing to wash the winsimal deoiling means 90 for removing the processing oil on the surface of the fastening element 1 conveyed by the conveying means, and the fastening element 1 conveyed through the centrifugal dehydrating means 90 and the conveying means. Recovery container for collecting the means 100, the drying means 50 for drying the fastening element (1) washed by the washing means 100, and the fastening element (1) dried by the drying means (50) 60, a pump 70 and control means 80 for controlling them.

At this time, the conveying means is a first lifting means 95 for elevating the supply cylinder 7 containing the fastening element 1, and the first vibration for distributing and conveying the fastening element 1 from the supply cylinder (7) Feeding means (97), the basket (10) containing the fastening element (1) conveyed by the first vibration feeding means (97), and the Winsim Deoiling means for removing the processing oil on the surface of the fastening element ( 90), the second elevating means 30 for elevating the basket 10 in a state in which the processing oil is removed by the winsimal deoiling means 90, and the basket 10 transferred by the second elevating means 30. Second vibration feeding means 40 for distributing and conveying the fastening element 1 therein.

Hereinafter, the schematic configuration will be described in detail below.

The supply cylinder 7 in which the fastening element 1 is contained is lifted by the first lifting means 95 and raised to a predetermined position.

In this way, the fastening element 1 of the supply cylinder 7 which is lifted to a predetermined position by the first elevating means 95 is horizontally dispersed by the conventional first vibrating feeding means 97 operated by the vibrator 96. It is transported and contained in the basket 10.

At this time, the basket 10 is made of a cylindrical container 12 having an upper portion opened as shown in FIG. 3, but the bottom surface of the basket 12 has a funnel shape in which the lower portion is upper and lower narrow. A plurality of through holes 12b are formed in the opening, and an opening 12a is formed in the center lower portion thereof.

The central portion of the container 12 is formed such that the dome-shaped opening and closing plate 16 protruding upwards is formed to span the outlet 12a of the container 12, so as to pressurize upward from the lower side of the opening and closing plate 16. When the opening and closing plate 16 moves upwards, the outlet 12a is opened and the fastening elements 1 filled therein are discharged to the outside. At this time, a plurality of legs (16a) is formed vertically at a lower portion of the opening and closing plate 16 to maintain a constant interval, the end of the leg (16a) is a locking step (b) formed in the lower portion of the outlet (12a) 16b) is formed to prevent the opening and closing plate 16 from being completely separated from the container 12.

On the other hand, the basket 10 has a plurality of support legs (12c) is formed in the outer lower portion of the container 12 to support the basket (10).

The basket 10 is rotated for a predetermined time by the winsimal deoiling means 90 after the fastening element 1 is filled therein so that the processing oil on the surface of the fastening element 1 is formed on the surface of the container 12 by centrifugal force. It is discharged to the outside through the through hole (12b).

And it is moved by the second lifting means 30 to the elevated position.

At this time, the second lifting means 30 has a rotational force of the deceleration motor 32 which is rotated forward and backward by the control means 80 by the sprockets 34a and 34b and the chain 36 to the vertical frame 37. The elevator 38 is lifted up and down on the basis of. One side of the elevator 38 supports and supports the outer portion of the basket 10, and actually lifts the basket 10. At this time, the vertical frame 37 is configured in a cylindrical shape, the elevator 38 is lifted to this is configured to be able to rotate left and right around the vertical frame 37 to rotate the elevator 38 to one side basket 10 ) Is preferably configured to be detachable from the elevator 38.

As such, the basket 10 lifted and lowered by the second lifting means 30 is seated on an upper portion of the hopper 42, which is an inlet of the second vibration feeding means 40. When the pin-shaped pressing member 44 is provided and the basket 10 is seated on the upper portion of the hopper 42, the lower side of the opening and closing plate 16 in the state in which the outlet 12a of the basket 10 is closed is Pressing and closing plate 16 is moved upwards and the outlet 12a is opened to fasten the fastening elements 1 to the outside. At this time, the second vibration feeding means 40 is provided with a vibrator 45 on the lower side of the hopper 42 to convey the fastening elements (1).

And, the cleaning means 100 according to Figures 4 to 6, the upper and lower parts of the housing 102 of the sealed form, and the transfer blade which is laid in a horizontal state inside the housing 102 in a spiral direction inwardly ( 112 is formed on the inner circumferential surface and a plurality of through holes 114 are formed on the outside so that both sides of both ends of the washing drum 110 are formed in surface contact with each other. A drive motor for rotating the cleaning drum 110 to smoothly rotate the pair of rollers 104a, 104b, 105a, 105b, and providing a driving force for the cleaning drum 110 to rotate. 106, a drive sprocket 108 fixed to an end of the rotation shaft 106a of the drive motor 106, and a driven sprocket 116 provided on the outer circumferential surface of the washing drum 110, and the drive sprocket 108 ) And chain belt 117 connecting the driven sprocket 116 with each other Achieved. At this time, it can be seen that the configuration using the pulley and the "V" type belt without using the drive sprocket 108, the driven sprocket 116 and the chain belt 117 also belongs to the same category.

In addition, the washing drum 110 is formed through the through hole 114 as a whole, the first to third expansion parts 118a, 118b, and 118c whose diameters are expanded to perform basic washing / ultrasound washing / rinsing. ) Is formed, and a washing tank is provided at an inner lower portion of the housing 102 so that the lower one side of the first to third expansion parts 118a, 118b, and 118c can be locked, which is disposed on the partition walls 122a and 122b. It is divided into a basic washing tank 120a, an ultrasonic washing tank 120b, and a rinse tank 120c.

Here, the partition wall 1 that divides the ultrasonic cleaning tank 120b and the rinse tank 120c has a relatively upper end compared to the partition wall 122b that partitions the basic cleaning tank 120a and the ultrasonic cleaning tank 120b. When formed so low that the washing liquid, such as TCE (Trichloro-ethylene) or hydrocarbon solvent (hydrocarbon), alkaline detergent, MC (Methylenechloride) filled in the rinse bath (120c) filled in the ultrasonic washing tank beyond the top of the partition wall (122a) If it is passed to (120b), and overflowed in the state filled in the ultrasonic washing tank (120b) is over the top of the partition wall (122b) to the base washing tank (120a) is filled.

On the other hand, the heater (124a, 124b, 124c) and the temperature sensor (125a, 125b, 125c) is provided at one side of the basic washing tank (120a), ultrasonic washing tank (120b) and rinse tank (120c) to set the temperature of the cleaning liquid When the heaters 124a, 124b, and 124c are controlled to maintain (for example, about 40 ° C), the temperature is measured and passed to the control means 80 to exceed the set temperature (for example, 38 to 42 ° C). In this case, the heaters 124a, 124b and 124c are turned off, and when the temperature is lower than the set temperature, the heaters 124a, 124b and 124c are turned on to maintain the washing liquid at a constant temperature.

In addition, one side of the washing tank is provided with a water level sensor 126, and the lower side is provided with washing liquid discharge ports (127a, 127b, 127c), respectively, by the water level sensor 126 to detect the current level of the washing liquid control means If the washing liquid is insufficient to send a detection signal to the (80) to fill the washing liquid through the washing liquid discharge ports (127a, 127b, 127c), and if overflowed to operate the pump 70 to recover to the main tank 130 The basic washing tank 120c and the ultrasonic washing tank 120b and the rinse tank 120a are both empty and the worker can clean the burr or processing oil that has sunk due to washing.

In addition, the inlets 102a and the outlets 102b which are upwardly formed on both sides of the housing 102 are respectively penetrated, and the cooling coils 140a and 140b are respectively formed on the inner circumferential surfaces of the inlets 102a and the outlets 102b. The water collecting parts 141a and 141b are formed at the lower sides of the cooling coils 140a and 140b, and are evaporated to be collected into the water separators 144a and 144b when the washing liquids condensed by the cooling coils 140a and 140b are collected. Are separated. At this time, the water separators 144a and 144b have a specific gravity of about 1 (1), so that the cleaning solution is about "1.4", so that the water floats up and the cleaning solution is relatively heavy, so that the water is sinked and separated. Of the washing liquid is introduced again into the housing (102).

In addition, the inside of the inlet (102a) is provided with a guide plate 146 inclined to face the inside of the washing drum 110 is guided by the horizontal conveyor 47 of the horizontal transfer means (40) The fastening element 1 serves to transfer the inside of the washing drum 110.

On the other hand, the bottom of the outlet side of the washing drum 110 is rotated in a caterpillar, but the bucket conveyor 147 protruding to the upper outside of the outlet (102b) is inclined and transported by the washing drum 110 to be washed The fastening element 1 is contained in the bucket 147a and discharged.

In addition, a main tank 130 in which the cleaning liquid is filled and an auxiliary tank 132 for replenishing the cleaning liquid in the main tank 130 when the cleaning liquid of the housing 102 is insufficient are provided.

In addition, the outer side of the housing 102 is provided with a distillation means 150 for purifying the washing liquid introduced through the discharge port 121 of the basic washing tank 120a and re-introduced into the washing means 100.

The distillation means 150 as shown in FIG. 7 is filled with an oil medium 152 therein and is provided with a heater 153 therebetween to heat the oil medium 152 and the oil medium 152 of the oil medium 152. The upper side is filled with the washing liquid flowing through the discharge port 121 of the gas washing tank (120a). Meanwhile, a cooling coil 154 is formed along the inner circumferential surface of the housing 151 on the upper portion of the cleaning liquid, and a water separator 155 is provided on an outer side of the housing 151.

The washing liquid introduced from the basic washing tank 120a by the structure as described above is heated and vaporized by steam, and the raised steam is cooled to the cooling coil 154 through which the cooling water cooled by the cooling means 160 circulates. The washing drum flows down along the inner wall surface 151a in the condensed state by being cooled and collected in the water collecting unit 156 and then put into the water separator 155 provided on one side to separate moisture having a relatively low specific gravity. It is discharged through the injection port 170 provided in the inner central portion of the outlet side 110 to finally clean the fastening element (1). At this time, the washing solution for washing the fastening element 1 flows down into the rinse tank 120c and the above process is repeatedly performed.

On the other hand, the washing means 100 is a cooling coil (140a, 140b) provided in the inlet (102a) and the outlet (102b) on the outside of the housing 102 and the cooling coil (154) provided in the distillation means (150) Cooling means 160 for supplying the cooling water circulating inside the) is provided.

In addition, the fastening element 1 washed while passing through the washing means 100 and discharged by the bucket conveyor 147 passes through the drying means 50, wherein the drying means 50 is the fastening element 1. A horizontal conveyor 56 is provided with a mesh belt 52 rotatably provided by a motor 54 so as to be movable, and at least one blower fan 57 is provided below the fastening element. (1) is dried. At this time, a filler layer 58 made of activated carbon is provided on the upper side of the horizontal conveyor 56, and an air outlet 59 is formed thereon to deodorize the odor mixed in the air discharged to the outside. In this case, but only the drying means 50 has a blower fan 57, but also provided with a heater (not shown) on one side is also preferably configured to increase the drying efficiency and shorten the drying time.

Then, the fastening element 1, which is transferred through the horizontal conveyor 56 and has undergone a drying process, passes through a recovery container 60 in which a plurality of inclined plates 62 are formed on both sides of the housing 64 to guide the same. It is contained in the storage box 66 provided in the lower portion of the recovery container (60).

Hereinafter, an operation example of the cleaning system provided with the cleaning means of the fastening element according to the present invention will be described in detail.

First, when the power is turned on to start the control means 80, the system is initialized and the detection signal of the water level sensor 126 is received and the water level is insufficient. Then, the pump 70 is driven accordingly.

When the washing liquid filled in the inside of the main tank 130 is introduced through the washing liquid discharge port 127c formed at the side of the rinse tank 120c according to the driving of the pump 70 as described above, the upper end of the adjacent partition wall 122a is opened. The ultrasonic washing tank 120b is moved to the inside, and when the ultrasonic washing tank 120b is filled, the ultrasonic washing tank 120b is moved beyond the upper end of the partition wall 122b and filled into the basic washing tank 120a.

Therefore, when the washing solution is continuously added to finally fill both the rinse tank 120c, the ultrasonic washing tank 120b, and the basic washing tank 120a, the control signal of the control means 80 is in accordance with the detection signal of the water level sensor 126. By this, the driving of the pump 70 is stopped. At this time, even after the above process, the water level sensor 126 continuously detects the current water level and receives the shortage from the main tank 130 in real time.

In addition, the heater 124a, 124b, and 124c provided in the basic washing tank 120a, the ultrasonic washing tank 120b, and the rinse tank 120c may be heated, for example, to maintain the cleaning efficiency of the washing solution at about 40 ° C. Make sure At this time, the on / off of the heaters 124a, 124b and 124c is controlled by the control means 80 according to the detection signals of the temperature sensors 125a, 125b and 125c.

On the other hand, after the initialization process, the supply cylinder 7 filled with the fastening element 1 is elevated, and the fastening element 1 is distributed and transferred to the basket 10 by using the first vibration feeding means 97. After that, the basket 10 is rotated by centrifugal deoiling means to remove the processing oil on the surface of the fastening element 1.

Then, the basket 10 is lifted by the second lifting means 30 and seated on the upper portion of the hopper 42, which is the inlet of the second vibration feeding means 40, and the opening and closing plate 16 by the pressing member 44. The lower side of the pressurized opening and closing plate 16 is moved upwards and the outlet 12a is opened so that the fastening elements 1 are transferred through the upper plate 46 of the second vibration feeding means 40 to wash means ( It is injected into the inside of 100).

The fastening element 1 thus transferred is introduced into the washing drum 110 along the inclined guide plate 146 of the inlet 102a and the washing means 100.

At this time, the washing drum 110 rotates the driven sprocket 108 fixed to the rotary shaft 106a by the drive of the drive motor 106 to rotate the driven sprocket 116 connected to the chain belt 117 rollers It rotates while being supported by (104a, 104b, 105a, 105b).

As described above, the fastening element 1 is guided by the conveying blade 112 protruding inward in a spiral direction formed on the inner circumferential surface of the washing drum 110 as the washing drum 110 rotates. It will be moved towards the exit.

At this time, the fastening element 1 passes through the first expansion part 118a. In this case, since a plurality of perforated through holes 114 are also formed in the first expansion part 118a, the washing liquid penetrates through the first expansion part 118a. The burr or the processing oil on the fastening element 1 is removed.

Since it is not completely removed, the fastening element 1 is transferred to the second expansion part 118b to be secondarily removed from the ultrasonic cleaning tank 120b. The ultrasonic washing tank (120b) is operated by the control of the control means (80) consisting of an ultrasonic vibrator for generating ultrasonic waves in the cleaning liquid contained in the inside of the ultrasonic washing tank (120b) on the inner bottom and a high frequency oscillator for driving the ultrasonic vibrator. The ultrasonic generating means 123 is provided to apply ultrasonic waves to the cleaning liquid, so that the hydraulic pressure is generated by the ultrasonic vibration, and the hydraulic pressure causes the dispersing action by the shocking fluctuations, so that the foreign matter in the surface of the fastening element 1 as well as the gap thereof. Will be cleaned until.

Then, the fastening element 1 removes the burr or the processing oil from the rinse bath 120c once again while passing through the third extension 118c.

After going through three such processes, it is discharged to the exit.

At this time, the washing liquid of the washing state is filled in the upper part of the oil medium 152 of the distillation means 150 through the discharge port 121 of the basic washing tank 120a, which is in a steam state by heating of the heater 153. Evaporated and raised, the raised steam flows down the inner wall 151a in a condensed state by the cooling coil 154 through which the cooling water supplied from the cooling means 160 is circulated, and is collected in the water collecting part 151b. Injected into the water separator 155 provided on one side to remove the water through the injection hole 170a of the injection hole 170 provided in the inner central portion of the outlet side of the washing drum 110 To clean the fastening element 1 last.

On the other hand, since the washing solution of the washing tank is heated by the heaters 124a, 124b, and 124c, the washing solution is moved toward both inlets 102a and outlets 102b of the washing means 100 and evaporates to the outside while evaporating to some extent. In order to prevent this, the cooling water is circulated in the cooling coils 140a and 140b provided on the inner circumferential surfaces of the inlet 102a and the outlet 102b to condense the evaporated washing solution and fall along the wall surface. Re-injecting the washing liquid separated from the moisture by the difference in specific gravity into the basic washing tank (120a) to reduce the loss of the washing liquid.

 On the other hand, since the fastening element 1 discharged toward the outlet of the washing drum 110 is not in a state in which the washing liquid is not removed, it is contained in the bucket 147a of the bucket conveyor 147 that is inclined and moves upward. 50 is transferred to the upper portion of the belt 52 of the horizontal conveyor 56, and the washing liquid buried in the fastening element (1) by the operation of the blower fan 57 of the lower side is dried to discharge to the recovery container (60). It is filled in the storage box 66. At this time, the air generated during the drying process is deodorized by the filler layer 58 provided on the upper side of the horizontal conveyor 56 is discharged to the outside through the air outlet (59).

As such, when the fastening element 1 is insufficient due to evaporation of the washing liquid during the process of washing, it is possible to inject a new washing liquid stored in the auxiliary tank 132 into the main tank 130.

In addition, when the washing process of the fastening element 1 is completed, the pump 70 is operated to recover the inside of the main tank 130 through the washing liquid discharge ports 127a, 127b, and 127c, and then the basic washing tank 120a and The ultrasonic cleaning tank 120b and the rinsing tank 120c may remove the process oil or burr that has sunk.

As described above, embodiments of the present invention have been described in detail, but the scope of the present invention is not limited thereto, and the scope of the present invention extends to the range substantially equivalent to the embodiments of the present invention.

As can be seen from the above description, according to the present invention, the cutting oil and the burr generated during the processing of the fastening elements such as bolts and nuts are automatically removed and washed.

In addition, the washing solution mixed with the impurities after washing is regenerated using the distillation means 150 to be re-introduced into the washing means 100, thereby reducing the consumption of the washing solution and reducing environmental pollution.

Claims (9)

A housing 102 in which upper and lower parts are sealed and an inlet port 102a into which a fastening element is introduced and a discharge port 102b for discharging the fastened element are formed; An inner peripheral surface of the housing 102 is placed in a horizontal state so as to transfer the fastening element 1 transferred from the inlet 102a to the outlet 102b in a helical direction. A washing drum 110 formed at a surface thereof and having a plurality of through holes 114 maintaining a predetermined interval and rotating by the driving motor 106; Automatic washing means of the fastening element, characterized in that consisting of; washing tank is located in the lower portion of the washing drum 110, the washing liquid is filled and the lower side of the washing drum is locked. The method of claim 1, A bucket conveyor 147 installed inclined outwardly of the outlet 102b from the lower side of the outlet of the washing drum 110 to transfer the washed fastening element 1 to the drying means 50 through the washing tank; Automatic cleaning means of the fastening element, characterized in that further comprises a. The method of claim 1, The washing drum (110) is formed with first to third expansion parts (118a, 118b, 118c) in which the radius of the shaft is expanded; The washing tank includes a basic washing tank 120a in which a lower side of the first expansion unit 118a is locked, and an ultrasonic washing unit 120b in which the lower one side of the second expansion unit 118b is locked. And a rinse tank (120c) in which the lower one side of the third extension part (118c) is locked by partition walls (122a, 122b). The method of claim 1, And a heater for heating the washing liquid inside the washing tank, and a temperature sensor detecting a temperature of the washing liquid heated by the heater. The method of claim 1, Cooling coils 140a and 140b are provided inside the inlet 102a and the outlet 102b of the housing 102 to condense and collect the washing liquid evaporated. The outer side of the housing auto-cleaning means of the fastening element, characterized in that the cooling means 160 for supplying the cooling water circulating inside the cooling coil (140a, 140b) is further provided. The method of claim 1, The outer side of the housing 102 is provided with a main tank 130 for supplying the washing liquid in the washing tank, the lower side of the washing tank is formed with a washing liquid discharge port, the recovery and discharge from the main tank to the washing liquid outlet Self-cleaning means of the fastening element, characterized in that it is further provided with a pump (70) operating to enable. The method according to claim 1 or 6, One side of the washing tank further comprises a water level sensor 126 for detecting the water level of the washing tank in order to supply the washing liquid of the main tank 130 when the water level of the washing tank is low. Automatic cleaning means of the fastening element. The method of claim 6, Automatic cleaning means of the fastening element, characterized in that the auxiliary tank for further replenishing the washing liquid in the main tank 130 is insufficient. The method of claim 1, Distillation means 150 for regenerating the washing liquid introduced through the discharge port 121 is provided on one side of the washing tank; Further provided with an injection port 170 for spraying the washing liquid regenerated by the distillation means 150 to the fastening element 1 washed through the washing tank provided in the inner central portion of the outlet side of the washing drum 110. Automatic cleaning means of the fastening element characterized in that it comprises.

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