Device and method for cleaning redundant rubber on periphery of high-locking nut

Abstract

The invention provides a high-lock nut peripheral redundant rubber cleaning device which comprises a brush head seat, a brush head, a brush head, a brush head, a brush head, a brush head cover and a brush head, a first cavity is formed in one end of the brush head seat, a threaded hole is formed in the other end of the brush head seat, and the first cavity is communicated with the threaded hole through a through hole; the brush is arranged in the first cavity; the brush is used for removing redundant glue on the periphery of the high-locking nut. One end of the tail handle is connected with the threaded hole, and a second cavity is formed in one end of the tail handle; the pneumatic air drill is connected with the other end of the tail handle, and the pneumatic air drill is used for driving the tail handle to rotate; one end of the ejector pin is arranged in the second cavity, and the other end of the ejector pin penetrates through the through hole and is arranged in the first cavity; the spring is arranged in the second cavity; meanwhile, the invention further provides a cleaning method for the redundant rubber on the periphery of the high-locking nut. The device is convenient to use and high in cleaning efficiency, and the surface of the nut is not scratched.

Description

Technical Field

[0001] The present application belongs to the field of aviation assembly manufacturing technology, and in particular relates to a device and method for cleaning excess glue around a high-lock nut. Background Art

[0002] When an airplane flies at high altitude, the air pressure decreases as the flight altitude increases. In order to maintain a certain air pressure in the cabin and ensure a comfortable living environment for the pilot and passengers, the cabin must have very good sealing properties. Since airplanes often fly in harsh environments such as high temperature, severe cold, rain, and sunshine, the sealing requirements are relatively high.

[0003] At present, in order to ensure the strength and sealing performance of the structure, high-locking bolts are generally used for interference fit connection. During the assembly process, the mating surfaces of the parts are coated with in-seam glue. When installing the bolts, wet connection is performed on the mating surfaces of the bolt head, bolt rod, and nut of the high-locking bolt. After the bolts are installed, the fasteners are packaged on the high-locking nuts to block the leakage of the gaps between the fasteners and the parts. When the nuts are wet-connected, a circle of circumferential excess glue will form around the side of the nut, which will cause contamination of the glue around the nut during subsequent construction operations. Before packaging the high-locking bolt fasteners, the excess glue around the nut needs to be cleaned until there is no visible stain when wiped with a piece of white fine cloth.

[0004] At present, the commonly used construction method is to use the tip of a small brush to remove excess glue, and then use a cleaning cloth dipped in a small amount of acetone for cleaning. This method has slow cleaning efficiency, low quality, and is easy to scratch the coating on the side of the nut. Summary of the invention

[0005] Purpose of the invention: The present invention overcomes the shortcomings of low cleaning efficiency and poor quality of the circumference of high-lock nuts in the existing assembly process, and is easy to scratch the coating on the side of the nut. It provides a device and method for cleaning excess glue on the circumference of high-lock nuts that is easy to use, has high cleaning efficiency, does not scratch the nut surface, and has good interchangeability of brush head seats.

[0006] In a first aspect, the present application provides a device for cleaning excess glue on the circumference of a high-lock nut, the cleaning device comprising:

[0007] A brush head seat, wherein a first cavity is disposed at one end of the brush head seat, a threaded hole is disposed at the other end of the brush head seat, and the first cavity is connected to the threaded hole through a through hole;

[0008] A brush is arranged in the first cavity; the brush is used to remove excess glue around the high lock nut;

[0009] A tail handle, one end of which is connected to the threaded hole, and one end of which is provided with a second cavity;

[0010] A pneumatic drill connected to the other end of the tail handle, the pneumatic drill is used to drive the tail handle to rotate;

[0011] An ejector pin, one end of which is disposed in the second cavity, and the other end of which passes through the through hole and is disposed in the first cavity; the other end of the ejector pin is pushed into the small hole of the high-locking bolt, so that the high-locking nut enters the first cavity;

[0012] A spring is arranged in the second cavity, one end of the spring contacts the top wall of the second cavity, and the other end of the spring contacts the annular boss of the ejector pin.

[0013] Preferably, the brush comprises:

[0014] The brush head has a row of brush holes opened along the axial direction according to a preset spacing;

[0015] A nylon bristle group is arranged in the brush hole.

[0016] Preferably, the brush head is a cylinder, and a row of brush holes are opened in the cylinder along the axial direction according to a preset spacing; the nylon bristle group is composed of a plurality of nylon bristles folded in half, and a small metal sheet is installed at the folded portion;

[0017] The small metal sheet is used to nail the nylon bristles into the brush holes, and the nylon bristle group is firmly fixed on the brush head.

[0018] Preferably, a plurality of cylindrical grooves are evenly arranged in the first cavity, the cylindrical grooves are arranged along the axial direction of the brush head seat, and the cylindrical grooves are used to install the brush.

[0019] Preferably, a small annular boss is provided in the middle of the brush head seat, and the through hole is located at the center of the small annular boss.

[0020] Preferably, one end of the ejector pin is configured to be conical, and the annular boss is close to the other end of the ejector pin;

[0021] The small annular boss and the annular boss work together to prevent the ejector pin from falling off during use.

[0022] In a second aspect, the present application also provides a method for cleaning excess glue around a high lock nut, the cleaning method comprising:

[0023] Assemble the device for cleaning excess glue around the high lock nut;

[0024] After the high-lock nut is wet-installed, excess glue will be produced around the nut. Use a small wooden stick to remove large pieces of glue during the construction period of the glue.

[0025] Choose brush head seats of different sizes and screw them to the tail handle according to nuts of different diameters. Choose a straight handle air drill or an elbow air drill flexibly according to the openness of the construction passage, clamp the tail handle on the drill chuck, and then connect the air drill to the air source. Dip a small amount of cleaning agent on the bristles, insert the sharp corner of the ejector pin into the small hole of the high-locking bolt, press the air drill so that the brush head just touches the surface of the structure, pull the trigger of the air drill, control the speed, and make the bristles rotate at a low speed to clean the excess glue around the nut, and complete the cleaning of the excess glue;

[0026] Device for cleaning excess glue around high-lock nuts.

[0027] Preferably, the method further comprises:

[0028] During the cleaning process, if the bristles are found to be seriously contaminated, you can use a small brush dipped in a small amount of detergent to clean the bristles. If the bristles are damaged due to long-term use, you can replace the brush head with a new one before proceeding with subsequent work.

[0029] Beneficial technical effects of this application:

[0030] The present invention provides a device and method for cleaning excess glue around a high-lock nut. The device and method adopt a rotatable shaft structure. The brush head seat and the tail handle are threadedly connected. The brush head and the brush head seat are assembled by insertion. The device has good processability and interchangeability. The bristles, brush head, brush head seat and thimble are all made of non-metallic materials, which can effectively avoid scratches on the product structure and has strong operability.

[0031] Under the action of spring force, the sharp corner of the lower end of the ejector pin is limited in the groove of the high-locking bolt end, ensuring that the brush head always rotates around the center of the bolt, improving the cleaning quality around the nut. The upper cylinder of the tail handle can be clamped on the drill clamp of the air drill, and the power of the air drill can be used to drive the brush bristles to rotate to achieve cleaning, which greatly releases labor. During the construction process, according to the openness of the structure, you can flexibly choose a straight-handled air drill and a 90° elbow air drill, which has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of a brush provided in an embodiment of the present application;

[0033] Figure 2 It is an exploded view of a device for cleaning excess glue around a high-lock nut provided in an embodiment of the present application;

[0034] Figure 3 is a cross-sectional view of a device for cleaning excess glue around a high-lock nut provided in an embodiment of the present application;

[0035] Figure 4 It is a cross-sectional view of the use condition of the device for cleaning excess glue around the high lock nut provided in an embodiment of the present application;

[0036] Figure 5 This is a working condition diagram of the device for cleaning excess glue around a high-lock nut provided in an embodiment of the present application;

[0037] Among them: 1-bristles; 2-brush head; 3-brush head seat; 4-thimble; 5-spring; 6-tail handle; 7-skeleton structure 8-high locking bolt; 9-high locking nut. DETAILED DESCRIPTION

[0038] The invention belongs to the field of aviation manufacturing assembly technology, and relates to a device for cleaning excess glue around a high-lock nut. The device for cleaning excess glue around a high-lock nut mainly comprises six parts: bristles, a brush head, a brush head seat, an ejector pin, a spring, and a tail handle.

[0039] Among them, the bristles, brush heads, brush head holders and thimbles are all made of non-metallic materials. The brush heads are highly interchangeable and easy to use. The brush head holder can be selected in matching sizes according to the size of the nut and screwed to the tail handle, making replacement easy. The thimble can be stably limited on the high-locking bolt head under the elastic force of the spring, ensuring that the brush can accurately and stably rotate to clean excess glue around the nut.

[0040] The invention can flexibly select air drills according to different construction access conditions, has wide application, high cleaning efficiency, high quality, reduces labor costs, and shortens production cycles.

[0041] like Figure 1 , Figure 2 As shown, the present invention provides a device for cleaning excess glue around a high lock nut. The device is composed of six parts, namely: a nylon bristle group 1, a brush head 2, a brush head seat 3, a thimble 4, a spring 5, and a tail handle 6.

[0042] The present invention is assembled by using shaft-type rotating parts. The tail handle 6 is clamped on pneumatic air drills of different structures according to different usage conditions. The nylon bristle group 1 can absorb a small amount of cleaning agent. When the ejector pin 4 is pushed into the small hole at the tail of the high-locking bolt to press the air drill, the spring 5 contracts, and the ejector pin 4 moves inward along its axial direction. The nylon bristle group 1 contacts the high-locking nut and the surface of the part. At this time, the trigger of the air drill is pulled, and the nylon bristle group 1 rotates around the ejector pin axis on the high-locking nut and the surface of the part to complete the cleaning of excess glue around the high-locking nut.

[0043] In the device of the invention, the bristles are made of nylon, which has good resilience, high safety and environmental protection, and will not scratch the surface of parts and nuts. The nylon bristle group 1 is composed of multiple bristles folded in half, and a small metal sheet is installed at the folded part. The brush head is made of hard PVC material, which has high hardness and mechanical properties, has a good anti-corrosion effect on cleaning agents, and has a long service life. The brush head is cylindrical in shape, and a row of small holes with a spacing of 4mm and a diameter of φ1.5mm are opened along the axial direction. The nylon bristle group is pressed into the small holes of the brush head through the small metal sheet, and the nylon bristle group is firmly fixed on the brush head.

[0044] Among them, the brush head seat 3 is cast from PVC material, and 8 equidistant cylindrical grooves are machined around the lower end of the brush head seat. The groove is convenient for the brush head 2 to be inserted into the groove, which plays a role in stabilizing the brush head. There is a small boss around the middle circle to limit the axial movement of the ejector pin 4 and prevent the ejector pin from falling off during use. The ejector pin 4 is machined from PVC material, and its lower end is conical, which can fix the center of the device of the present invention in the small hole at the center of the high locking bolt to ensure that the bristles can rotate around the axial direction of the ejector pin. There is an annular boss in the middle of the ejector pin. In a natural state, the lower end face of the ejector pin boss fits with the upper end face of the brush head seat boss, and the lower end corner of the ejector pin is flush with the lower end face of the brush head seat. There is a φ5mm long cylinder on the upper end of the ejector pin, which is convenient for the spring 5 to be inserted and reduces the axial shaking of the ejector pin.

[0045] Furthermore, the lower end of the brush head seat is arranged with a rounded corner to avoid interference with the machine body. The cylindrical groove is arranged along the axial direction (vertically arranged) to facilitate the replacement and installation of the brush.

[0046] Among them, the spring 5 is made of high-quality carbon steel material by cold coiling, and then low-temperature tempering is used to eliminate the internal stress generated during winding. One end of the spring is inserted into the cylindrical surface of the upper end of the ejector pin, and the other end is inserted into the slot hole at the lower end of the tail handle 6 to ensure that the ejector pin always presses the high lock bolt during operation. The tail handle 6 is made of 45 steel by mechanical processing, and then quenched and tempered (quenched + high-temperature tempered) to ensure that the tail handle 6 has good strength and rigidity. There is a cylindrical groove on the lower end surface of the tail handle, and its outer cylindrical surface has a 10mm long external thread, which is screwed with the internal thread on the upper end of the brush head seat. The diameter of the groove matches the outer diameter of the spring to ensure that it can be inserted into the groove. The other end of the spring is sleeved on the upper end of the ejector pin to ensure the stability of the ejector pin during operation. The upper end of the tail handle is a φ6mm cylinder that can be clamped on the drill clamp of the air drill to reduce the labor of the operator and improve the efficiency of cleaning.

[0047] The contact points between the device of the invention and the aircraft structure and fasteners are made of PVC or nylon material, which better avoids scratches on the product structure and fasteners during the cleaning process and improves product quality. The brush head holder can select a matching brush head holder according to the diameter of the high lock nut. The size specifications of the brush head are interchangeable and easy to replace. During the cleaning process, the power of the pneumatic drill can be used to improve production efficiency, shorten production cycle and reduce personnel costs.

[0048] The present invention provides a device for cleaning excess glue around a high-lock nut. The structure adopts a rotatable shaft structure. The brush head seat and the tail handle are threadedly connected. The brush head and the brush head seat are assembled by insertion. It has good processability and interchangeability. The bristles, brush head, brush head seat, and ejector pin are all made of non-metallic materials, which can effectively avoid the phenomenon of scratches on the product structure and has strong operability. Under the action of the spring elastic force, the sharp corner of the lower end of the ejector pin is limited in the groove of the end of the high-lock bolt to ensure that the brush head always rotates around the center of the bolt, thereby improving the cleaning quality of the nut. The upper cylinder of the tail handle can be clamped on the drill clamp of the air drill, and the power of the air drill can be used to drive the bristles to rotate to achieve cleaning work, which greatly releases labor. During the construction process, according to the openness of the structure, a straight-handled air drill and a 90° elbow air drill can be flexibly selected, which has strong applicability.

[0049] In other embodiments of the present application, see the attached Figure 1 , Figure 2 As shown, the present invention provides a device for cleaning excess glue around a high lock nut. The device is composed of six parts, namely: a nylon bristle group 1, a brush head 2, a brush head seat 3, a thimble 4, a spring 5, and a tail handle 6.

[0050] In the device of the invention, the bristles are made of nylon, which has good resilience, high safety and environmental protection, and will not scratch the surface of parts and nuts. The nylon bristle group 1 is composed of multiple bristles folded in half, and a small metal sheet is installed at the folded part. The brush head is made of hard PVC material, which has high hardness and mechanical properties, has a good anti-corrosion effect on cleaning agents, and has a long service life. The brush head is cylindrical in shape, and a row of small holes with a spacing of 4mm and a diameter of φ1.5mm are opened along the axial direction. The nylon bristle group is nailed into the small holes of the brush head through the small metal sheet, and the nylon bristle group is firmly fixed on the brush head. The brush head seat 3 is cast from PVC material, and 8 equidistant cylindrical grooves are machined around the lower end of the brush head seat. The groove is convenient for the brush head 2 to be inserted into the groove, which plays a role in stabilizing the brush head. There is a small boss around the middle circle to limit the axial movement of the ejector pin 4 and prevent it from falling off during use. The ejector pin 4 is machined from PVC material, and its lower end is conical, which can fix the center of the device of the present invention in the small hole at the center of the high locking bolt to ensure that the bristles can rotate around the axial direction of the ejector pin. There is an annular boss in the middle of the ejector pin. In a natural state, the lower end face of the ejector pin boss fits with the upper end face of the brush head seat boss, and the lower end sharp corner of the ejector pin is flush with the lower end face of the brush head seat. There is a 5mm long cylinder on the upper end of the ejector pin, which is convenient for the spring 5 to be inserted and reduces the axial shaking of the ejector pin.

[0051] Among them, see Figure 3 The spring 5 is made of high-quality carbon steel material by cold coiling, and then low-temperature tempering is used to eliminate the internal stress generated during winding. One end of the spring is inserted into the cylindrical surface of the upper end of the ejector pin, and the other end is inserted into the slot at the lower end of the tail handle to ensure that the ejector pin always presses the high-locking bolt during operation. The tail handle 6 is made of 45 steel by mechanical processing, and is subjected to quenching and tempering (quenching + high-temperature tempering) treatment to ensure that the tail handle 6 has good strength and rigidity. There is a cylindrical groove on the lower end surface of the tail handle, and its outer cylindrical surface has a 10mm long external thread, which is screwed with the internal thread on the upper end of the brush head seat. The diameter of the groove matches the outer diameter of the spring to ensure that it can be inserted into the groove. The other end of the spring is sleeved on the upper end of the ejector pin to ensure the stability of the ejector pin during operation. The upper end of the tail handle is a φ6mm cylinder that can be clamped on the drill clamp of the air drill to reduce the labor of the operator and improve the efficiency of cleaning.

[0052] In a feasible implementation, the specific operation steps provided in this application are as follows:

[0053] 1. Manufacturing the various parts of the patented device of the present invention

[0054] Manufacture each assembly part according to design drawings and technical requirements.

[0055] 2. Assembling the device of the present invention

[0056] ① Fold the nylon bristles in half, install a small metal sheet at the folded part and press it into the small hole of the brush head together with the small metal sheet, and press the bristles onto the brush head in the same way.

[0057] ②Insert the brush head into the cylindrical groove of the brush head holder.

[0058] ③Put one end of the spring on the cylinder of the ejector pin and insert the other end into the cylindrical groove of the tail handle.

[0059] ④Insert the pointed end of the ejector pin into the brush head holder from above, and insert the other end together with the spring into the cylindrical groove of the tail handle.

[0060] ⑤ Screw the tail handle and the brush head seat together using internal and external threads to complete the assembly of the device of the present invention.

[0061] 3. Clean the excess glue around the high lock nut. Please refer to Figure 4 and Figure 5 .

[0062] ① After the high-lock nut is wet-installed, excess glue will be produced around the nut. Use a small wooden stick to remove large pieces of glue during the construction period of the glue.

[0063] ② Choose brush head seats of different sizes and screw them to the tail handle according to nuts of different diameters. Choose a straight handle air drill or an elbow air drill flexibly according to the openness of the construction passage, clamp the tail handle on the drill chuck, and then connect the air drill to the air source. Dip a small amount of cleaning agent on the bristles, insert the sharp corner of the thimble into the small hole of the high-locking bolt, press the air drill so that the brush head just touches the surface of the structure, pull the trigger of the air drill, control the speed, and make the bristles rotate at a low speed to clean the excess glue around the nut, and complete the cleaning of the excess glue. During the cleaning process, if the bristles are found to be seriously contaminated, use a small brush to dip a small amount of cleaning agent to clean the bristles. If the bristles are damaged due to long-term use, replace the new brush head and then carry out subsequent work.

[0064] ③Storing the device of the present invention

[0065] After the cleaning work is completed, disconnect the air source, remove the air drill with the air drill key, pull out the brush head, and use a small brush dipped in cleaning agent to clean the bristles, brush head, and brush head seat for the next use. Finally, store the device in a storage box.

Claims

1. A device for cleaning excess glue around a high lock nut, characterized in that: The cleaning device comprises: A brush head seat, wherein a first cavity is disposed at one end of the brush head seat, a threaded hole is disposed at the other end of the brush head seat, and the first cavity is connected to the threaded hole through a through hole; A brush is arranged in the first cavity; the brush is used to remove excess glue around the high lock nut; A tail handle, one end of which is connected to the threaded hole, and one end of which is provided with a second cavity; A pneumatic drill connected to the other end of the tail handle, the pneumatic drill is used to drive the tail handle to rotate; An ejector pin, one end of which is disposed in the second cavity, and the other end of which passes through the through hole and is disposed in the first cavity; the other end of the ejector pin is pushed into the small hole of the high-locking bolt, so that the high-locking nut enters the first cavity; A spring is arranged in the second cavity, one end of the spring contacts the top wall of the second cavity, and the other end of the spring contacts the annular boss of the ejector pin.

2. The cleaning device according to claim 1, characterized in that: The brush comprises: The brush head has a row of brush holes opened along the axial direction according to a preset spacing; A nylon bristle group is arranged in the brush hole.

3. The cleaning device according to claim 2, characterized in that: The brush head is a cylinder, and a row of brush holes are opened in the cylinder along the axial direction according to a preset spacing; the nylon bristle group is composed of a plurality of nylon bristles folded in half, and a small metal sheet is installed at the folded part; The small metal sheet is used to nail the nylon bristles into the brush holes, and the nylon bristle group is firmly fixed on the brush head.

4. The cleaning device according to claim 1, characterized in that: A plurality of cylindrical grooves are evenly arranged in the first cavity. The cylindrical grooves are arranged along the axial direction of the brush head seat and are used to install the brush.

5. The cleaning device according to claim 1, characterized in that: A small annular boss is arranged in the middle of the brush head seat, and the through hole is located at the center of the small annular boss.

6. The cleaning device according to claim 5, characterized in that: One end of the ejector pin is configured to be conical, and the annular boss is close to the other end of the ejector pin; The small annular boss and the annular boss work together to prevent the ejector pin from falling off during use.

7. A method for cleaning excess glue around a high lock nut, characterized in that: The cleaning method comprises: Assemble the device for cleaning excess glue around the high lock nut; After the high-lock nut is wet-installed, excess glue will be produced around the nut. Use a small wooden stick to remove large pieces of glue during the construction period of the glue. Choose brush head seats of different sizes and screw them to the tail handle according to nuts of different diameters. Choose a straight handle air drill or an elbow air drill flexibly according to the openness of the construction passage, clamp the tail handle on the drill chuck, and then connect the air drill to the air source. Dip a small amount of cleaning agent on the bristles, insert the sharp corner of the ejector pin into the small hole of the high-locking bolt, press the air drill so that the brush head just touches the surface of the structure, pull the trigger of the air drill, control the speed, and make the bristles rotate at a low speed to clean the excess glue around the nut, and complete the cleaning of the excess glue; Device for cleaning excess glue around high-lock nuts.

8. The cleaning method according to claim 7, characterized in that: The method further comprises: During the cleaning process, if the bristles are found to be seriously contaminated, you can use a small brush dipped in a small amount of detergent to clean the bristles. If the bristles are damaged due to long-term use, you can replace the brush head with a new one before proceeding with subsequent work.

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