Fastener packaging tool for laser projection positioning in non-open area and use method

Abstract

The invention provides a fastener packaging tool for laser projection positioning in a non-open area and a using method. The tool comprises a handle (1), a first stand column (2), a metal plate bending piece (4), a bottom plate (6), a second stand column (9), a laser emitting device (13), a pattern projection device (14) and a glue container (15). The first stand column (2) and the second stand column (9) are arranged in parallel, and a handle (1) and a bottom plate (6) which are parallel are fixedly connected to the first stand column (2) and the second stand column (9). The metal plate bending piece (4) is arranged between the handle (1) and the bottom plate (6) and can move up and down in the axial direction of the first stand column (2) and the second stand column (9). Concentric positioning holes are formed in the extending ends of the metal plate bending piece (4) and the bottom plate (6), the two concentric positioning holes are used for installing the pattern projection device (14) and the glue containing container (15) respectively, and the laser emitting device (13) is connected to the pattern projection device (14); after the laser emitting device (13) is used for projecting a projection positioning mark pattern generated by the pattern projection device (14) to the center point of the non-packaged head of the fastener, the glue container (15) is positioned to the packaging position of the fastener, and the handle (1) is operated to drive the glue container (15) to move to the to-be-packaged head of the fastener, so that packaging is achieved. The packaging efficiency is improved, the glue using cost is reduced, the labor intensity of operators is relieved, and the normal production and manufacturing progress is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft manufacturing glue coating, and in particular to a fastener packaging tool for laser projection positioning in a closed area and a use method thereof. Background Art

[0002] In the aircraft manufacturing process, fastener packaging is one of the most important manufacturing links. Fastener packaging usually uses sealant to wrap the fastener head to form a relatively sealed protective space. The package is symmetrically conical in shape with an oblate top, which can prevent corrosion of the aircraft by foreign objects such as water and steam, and ensure the good sealing of the closed area of ​​the aircraft. According to the technical requirements of aircraft design, some closed areas also need to be packaged with fasteners, but due to limited operating space, traditional fastener packaging methods are difficult to implement, and are prone to problems such as loose packaging and unstable surface quality, which leads to the failure of the aircraft structure's corrosion resistance and sealing, and easily causes flight safety accidents.

[0003] At present, manual operation is mainly used to seal fasteners in closed areas of aircraft. The conventional method is to manually use a glue spoon to seal fasteners. The specific operation is to use a glue spoon to take a small amount of sealant and apply the sealant to the head of the fastener several times to form a package. However, due to the high viscosity of the sealant itself, manual coating cannot accurately control the amount of glue applied, which can easily cause the problem that the external dimensions of the package cannot be accurately controlled after coating. Another method is to use a curved tube glue injector for glue coating. This method can better seal fasteners, but it is only suitable for coating in relatively semi-open areas that can be seen visually. For particularly closed areas, it can only rely on manual experience and hand feeling to assist in positioning and coating. Since it is impossible to visually locate the center of the fastener head, and it is difficult to ensure that the glue outlet is vertical to the fastener during the packaging process, the packaging efficiency is low, and it is easy to have packaging position deviation and unqualified external dimensions after packaging. Therefore, there is an urgent need for a fastener packaging tool and method that can accurately locate, stabilize and efficiently. Summary of the invention

[0004] The present invention provides a fastener packaging tool and a method for using laser projection positioning in a closed area, which are used to solve the problems of low packaging efficiency, packaging position deviation, and unqualified appearance dimensions after packaging due to the inability to visually locate the center of the fastener head during packaging in a closed area and the difficulty in controlling the glue outlet to be vertical to the fastener during the packaging process, thereby causing unnecessary rework problems, so as to achieve the purpose of improving packaging efficiency, reducing glue costs, alleviating the labor intensity of operators, and ensuring normal production and manufacturing progress.

[0005] The first aspect of the present invention provides a fastener packaging tool for laser projection positioning in a closed area, comprising: a handle 1, a first column 2, a sheet metal bending member 4, a bottom plate 6, a second column 9, a laser emitting device 13, a pattern projection device 14 and a glue container 15;

[0006] The first column 2 and the second column 9 are arranged in parallel, and a parallel handle 1 and a bottom plate 6 are fixedly connected thereto;

[0007] The sheet metal bending member 4 is disposed between the handle 1 and the bottom plate 6 and can move up and down along the axial direction of the first column 2 and the second column 9;

[0008] The extended ends of the sheet metal bending part 4 and the bottom plate 6 are provided with concentric positioning holes, and the two concentric positioning holes are used to install the pattern projection device 14 and the glue container 15 respectively, and the laser emitting device 13 is connected to the pattern projection device 14;

[0009] After the positioning mark pattern generated by the pattern projection device 14 is projected onto the center point of the non-packaged head of the fastener using the laser emitting device 13, the glue container 15 is positioned at the fastener packaging position, and the operating handle 1 drives the glue container 15 to move to the head of the fastener to be packaged, thereby achieving packaging.

[0010] Optionally, a spring 8 is sleeved on the second column 9 and is located between the sheet metal bending part 4 and the handle 1 .

[0011] Optionally, the length of the spring 8 at maximum stroke does not exceed 60 mm;

[0012] The compression stroke of the spring 8 is greater than the height dimension of the fastener package by more than 3 mm.

[0013] Optionally, the sheet metal bending member 4 and the bottom plate 6 are respectively provided with a first limit block 11 and a second limit block 12 which are positioned opposite to each other;

[0014] The height of the first limit block 11 is 5 to 10 mm greater than the height of the non-encapsulated head of the fastener;

[0015] The height of the second limiting block 12 is greater than the height of the glue container 15 .

[0016] Optionally, a first bushing 3 is provided in the through hole on the sheet metal bending part 4 through which the first column 2 and the second column 9 pass; the sheet metal bending part 4 is glued to the first bushing 3;

[0017] A second bushing 7 is provided in the through hole on the bottom plate 6 through which the first column 2 and the second column 9 pass;

[0018] The first column 2, the second column 9, the bottom plate 6 and the second bushing 7 are glued together;

[0019] The handle 1 is glued to the first column 2 and the second column 9;

[0020] The first limiting block 11 is glued to the sheet metal bending member 4 , and the second limiting block 12 is glued to the bottom plate 6 .

[0021] Optionally, a reinforcing plate 5 is glued on top of the bottom plate 6;

[0022] The reinforcing plate 5 is sleeved on the first column 2 and the second column 9 .

[0023] Optionally, a hand-holding section is provided on the sheet metal bending part 4 , and the hand-holding section is bent toward the handle 1 .

[0024] Optionally, a lateral support plate 10 is fixedly connected to the upper surface of the sheet metal bending part 4;

[0025] One end of the lateral support plate 10 is connected to the hand-held section, and the other end is connected to the extended end of the sheet metal bending part 4.

[0026] Optionally, the glue container 15 is made of polyethylene material, the volume and shape of the inner cavity of the glue container 15 match the outer dimensions of the fastener after packaging, and the bottom rod of the glue container 15 is hollow.

[0027] A second aspect of the present invention provides a method for using the fastener packaging tool for laser projection positioning in a non-open area as described in the first aspect, comprising:

[0028] Step 1: Fill a specified volume of sealant 18 into the glue container 15, and then fix it to the concentric positioning hole on the bottom plate 6 by interference mounting, turn on the laser emitting device 13, and project the positioning mark pattern onto the glue container (15) through the pattern projection device 14, ensuring that the center of the projection pattern is concentric with the upper surface of the glue container 15);

[0029] Step 2: manually hold the handle 1 and the sheet metal bending part 4, and pull the sheet metal bending part 4 toward the handle 1; then put the extended end of the bottom plate 6 into the head of the fastener 16 to be glued on the workpiece 17;

[0030] Step 3: After the positioning mark projection pattern is transferred to the surface of the workpiece 17, the positioning mark projection pattern is adjusted so that its center is concentric with the center of the non-sealed head of the fastener 16, that is, the center of the glue container 15 is simultaneously ensured to be concentric with the center of the head of the fastener 16 to be sealed;

[0031] Step 4: Manually press the first stopper 11 on the sheet bending part 4 against the surface of the workpiece 17, and then slowly and evenly release the grip, so that the bottom plate 6 drives the glue container 15 to vertically and slowly approach the head of the fastener 16 to be packaged. After the second stopper 12 on the bottom plate 6 contacts the surface of the workpiece 17, the packaging is completed;

[0032] Step 5: Slowly and evenly hold the sheet metal bending part 4, so that the bottom plate 6 drives the glue container 15 to move vertically and slowly away from the fastener 16 at a uniform speed. After the fastener 16 is away from the top of the package head, the fastener packaging tool is removed.

[0033] The present invention provides a fastener packaging tool and a method for using the laser projection positioning in a closed area. The beneficial effects of the present invention are as follows:

[0034] The present invention does not require complicated equipment and is simple and convenient to manufacture and operate, and is easy to master. Laser projection technology is used to accurately locate the center of the head of the fastener in the closed area, thereby improving the accuracy and stability of the package. The laser projection is not affected by the brightness of the ambient light, which reduces human errors, ensures the appearance size of the package coating and the qualified rate of the package, and improves the assembly quality of the product. This packaging tool can be used to quickly assist in positioning and complete the fastener packaging operation, thereby improving work efficiency. The improvement in the qualified rate of the package avoids unnecessary rework, reduces the workload of workers, saves the waste of sealant, reduces the economic burden of the enterprise, and improves the competitiveness of the enterprise. The present invention has a wide range of applications and can be applied to the packaging of fasteners in closed areas of different specifications and types, and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural diagram of the fastener packaging tool of the present invention;

[0036] Figure 2 Schematic diagram of a use scenario of the fastener packaging tool of the present invention;

[0037] Description of reference numerals:

[0038] 1. Handle; 2. First column; 3. First bushing; 4. Sheet metal bending part; 5. Reinforcement plate; 6. Bottom plate; 7. Second bushing; 8. Spring; 9. Second column; 10. Reinforcement plate; 11. First limit block; 12. Second limit block; 13. Laser emitting device; 14. Pattern projection device; 15. Glue container; 16. Fastener; 17. Workpiece; 18. Sealant. DETAILED DESCRIPTION

[0039] The present application is further described in detail below with reference to the accompanying drawings.

[0040] See also Figure 1 and Figure 2, the present invention provides a fastener packaging tool and a method of use for laser projection positioning in a closed area, wherein the main structure of the laser projection assisted positioning fastener packaging tool (referred to as the packaging tool) is composed of a handle, a column, a bushing, a sheet metal bending part, a reinforcing plate, a base plate, a spring, a limit block, a laser emitting device, a pattern projection device and a glue container. The packaging tool structure is divided into a handle end and an extension end. Its technical feature is that by using the mirror principle, a concentric positioning hole is taken on each of the end areas of the sheet metal bending part and the extension end of the base plate of the packaging tool, and a pattern projection device and a glue container are installed thereon respectively. After installation, the center of the pattern projection device and the glue container are concentric and coaxial. After the laser emitting device is used to project the positioning mark pattern to the center point of the non-packaged head of the fastener, the glue container is also accurately positioned to the fastener packaging position according to the mirror principle, and then the packaging operation is performed by holding the handle end of the packaging tool. Specific technical features of the invention include:

[0041] 1) The length of the bottom plate of the packaging tool and the extended end of the sheet metal bending part is greater than the depth of the fastener position in the closed area of ​​the workpiece, ensuring that the packaging tool can deliver the glue container on it to the fastener head position.

[0042] 2) The handle, bottom plate and sheet metal bending part on the packaging tool are parallel to each other and are connected and fixed by two columns, wherein the sheet metal bending part in the middle can move vertically up and down through the columns.

[0043] 3) The height of the upper limit block of the sheet metal bending part of the packaging tool is 5 to 10 mm greater than the height of the non-packaging head of the fastener on the same side of the workpiece, ensuring that there is no interference with the fastener head and that the visual projection mark can be guaranteed. The limit block is used to position the entire packaging tool. After contacting and positioning with the surface of the workpiece, the center axis of the glue container on the bottom plate is perpendicular to the center axis of the fastener, ensuring that the subsequent packaging shape is centered and symmetrical without deviation.

[0044] 4) A spring is added to the middle column connecting the sheet metal bending part and the handle on the packaging tool to facilitate manual control and reduce the intensity of manual operation. The length of the spring at the maximum stroke does not exceed 60mm to ensure that it can be held with one hand; the spring compression stroke is more than 3mm greater than the height dimension of the fastener packaging to ensure that the workpiece does not interfere with the glue container on the packaging tool during operation.

[0045] 5) The laser emitting device on the sheet metal bending part of the packaging tool is connected to the pattern projection device through threads, and the center of the pattern projection device is concentric with the center hole of the bottom plate for mounting the opening of the glue container.

[0046] 6) A small mobile laser emitting device is selected as the laser emitting device, and the positioning mark pattern projected by the pattern projection device onto the surface of the fastener is a concentric multi-ring pattern that can visually identify the center of the fastener head, and the maximum diameter of the pattern is not larger than the outer diameter edge of the fastener head.

[0047] 7) The height of the limit block on the bottom plate of the packaging tool is greater than the height of the glue container, ensuring that there is a 1-3mm gap between the glue container and the workpiece structure surface after the limit block is positioned on the workpiece structure surface, so as to avoid the problem of sealant flanging on the edge of the fastener during packaging.

[0048] 8) The glue container is made of polyethylene material. The volume and shape of the inner cavity of the glue container match the outer dimensions of the fastener after packaging, so as to control the amount of glue applied and ensure that the outer dimensions after packaging meet the requirements of the technical documents. The top rod of the small head of the glue container is hollow, which is convenient for the discharge of excess sealant and gas during packaging. The rod shape is slightly tapered, and the root diameter is an interference fit with the opening of the bottom plate of the packaging tool, which is convenient for loading and unloading and prevents the glue container from falling during glue application.

[0049] See also Figure 1 The present invention applies for a fastener packaging tool for laser projection positioning in a closed area, wherein the hole position and spacing of the first column 2 and the second column 9 match the hole position and spacing on the handle 1, the sheet bending part 4, the reinforcing plate 5 and the bottom plate 6, the depth position on the fastener 16 and the workpiece 17 determines the extension length of the bottom plate 6 and the sheet bending part 4, and then determines the position of the center hole on the sheet bending part 4 and the bottom plate 6 for installing the pattern projection device 14 and the glue container 15, and drills holes on the bottom plate 6, glues the reinforcing plate 5 and the second bushing 7 and the second limit block 12, temporarily install the glue container 15; drill holes on the sheet metal bending part 4 to glue the first bushing 3, the first limit block 11, and the pattern projection device 14, and fix the reinforcing plate 10, and then screw the laser emitting device 13 to the pattern projection device 14; glue the handle 1 to the first column 2 and the second column 9, then put the spring 8 into the second column 9, and then install the sheet metal bending part 4 on the first column 2 and the second column 9, and finally glue the first column 2 and the second column 9 to the second bushing 7 on the bottom plate 6.

[0050] See also Figure 1 and Figure 2 The specific implementation steps of the method provided by the present invention are as follows: Before implementation, the cleaning of the fastener area to be packaged and other related work have been completed.

[0051] Step 1: Fill a specified volume of sealant 18 into the glue container 15, then fix it to the matching mounting hole on the base plate 6 by interference mounting, and turn on the laser emitting device 13 so that the positioning mark pattern is projected onto the glue container 15 through the pattern projection device 14, ensuring that the center of the projection pattern is concentric with the upper surface 15 of the glue container.

[0052] Step 2: manually hold the handle 1 and the sheet metal bending part 4, and pull the sheet metal bending part 4 toward the handle 1; then put the fastener packaging tool into the vicinity of the head of the fastener 16 to be glued on the workpiece 17.

[0053] Step 3: After the positioning mark projection pattern is transferred to the workpiece surface, the positioning mark projection pattern is adjusted so that its center is concentric with the center of the non-sealed head of the fastener 16, that is, the center of the glue container 15 is simultaneously ensured to be concentric with the center of the head of the fastener 16 to be sealed.

[0054] Step 4: Manually press the first limit block 11 on the sheet metal bending part 4 against the surface of the workpiece 17 and fix it, then slowly and evenly relax the grip, so that the bottom plate 6 drives the glue container 15 to vertically and slowly approach the head of the fastener 16 to be packaged. After the second limit block 12 on the bottom plate 6 contacts the surface of the workpiece 17, the packaging is completed.

[0055] Step 5: Slowly and evenly hold the sheet metal bending part 4, so that the bottom plate 6 drives the glue container 15 vertically and slowly and evenly away from the fastener 16. After it is away from the top of the fastener 16, remove the fastener sealing tool. If there is excess sealant on the top of the fastener 16, trim it according to technical requirements.

Claims

1. A fastener packaging tool with laser projection positioning in a closed area, characterized in that: include: A handle (1), a first column (2), a sheet metal bending member (4), a bottom plate (6), a second column (9), a laser emitting device (13), a pattern projection device (14) and a glue container (15); The first column (2) and the second column (9) are arranged in parallel, and parallel handles (1) and a bottom plate (6) are fixedly connected thereto; The sheet metal bending member (4) is arranged between the handle (1) and the bottom plate (6), and can move up and down along the axis of the first column (2) and the second column (9); The extended ends of the sheet metal bending member (4) and the bottom plate (6) are provided with concentric positioning holes, and the two concentric positioning holes are used to install the pattern projection device (14) and the glue container (15) respectively, and the laser emitting device (13) is connected to the pattern projection device (14); After the positioning mark pattern generated by the pattern projection device (14) is projected onto the center point of the non-sealed head of the fastener using the laser emitting device (13), the glue container (15) is positioned at the fastener sealing position, and the operating handle (1) drives the glue container (15) to move to the head of the fastener to be sealed, thereby achieving sealing.

2. The fastener packaging tool with laser projection positioning in a closed area according to claim 1, characterized in that: A spring (8) is sleeved on the second upright column (9) and is located between the sheet metal bending part (4) and the handle (1).

3. The fastener packaging tool with laser projection positioning in a closed area according to claim 2, characterized in that: The length of the spring (8) at maximum stroke does not exceed 60 mm; The compression stroke of the spring (8) is greater than the height dimension of the fastener package by more than 3 mm.

4. The fastener packaging tool with laser projection positioning in a closed area according to claim 2, characterized in that: A first limiting block (11) and a second limiting block (12) which are opposite to each other are respectively arranged on the sheet metal bending member (4) and the bottom plate (6); The height of the first limit block (11) is 5 to 10 mm greater than the height of the non-encapsulated head of the fastener; The height of the second limiting block (12) is greater than the height of the glue container (15).

5. The fastener packaging tool with laser projection positioning in a closed area according to claim 4, characterized in that: A first bushing (3) is arranged in a through hole on the sheet metal bending part (4) through which the first column (2) and the second column (9) pass; the sheet metal bending part (4) is glued to the first bushing (3); A second bushing (7) is arranged in a through hole on the bottom plate (6) through which the first column (2) and the second column (9) pass; The first column (2), the second column (9), the bottom plate (6) and the second bushing (7) are glued together; The handle (1) is glued to the first column (2) and the second column (9); The first limit block (11) is glued to the sheet metal bending part (4), and the second limit block (12) is glued to the bottom plate (6).

6. The fastener packaging tool with laser projection positioning in a closed area according to claim 1, characterized in that: A reinforcing plate (5) is glued onto the top of the bottom plate (6); The reinforcing plate (5) is sleeved on the first upright column (2) and the second upright column (9).

7. The fastener packaging tool with laser projection positioning in a closed area according to claim 6, characterized in that: A hand-holding section is provided on the sheet metal bending part (4), and the hand-holding section is bent toward the handle (1).

8. The fastener packaging tool with laser projection positioning in a closed area according to claim 6, characterized in that: A lateral support plate (10) is fixedly connected to the upper surface of the sheet metal bending part (4); One end of the lateral support plate (10) is connected to the hand-held section, and the other end is connected to the extended end of the sheet metal bending part (4).

9. The fastener packaging tool with laser projection positioning in a closed area according to claim 1, characterized in that: The glue container (15) is made of polyethylene material. The volume and shape of the inner cavity of the glue container (15) match the outer dimensions of the fastener after packaging. The bottom rod of the glue container (15) is hollow.

10. A method for using the fastener packaging tool for closed area laser projection positioning as claimed in claim 4, characterized in that: include: Step 1: A specified volume of sealant (18) is placed in a glue container (15), and then the sealant (18) is fixed to the concentric positioning hole on the bottom plate (6) by interference mounting, and a laser emitting device (13) is turned on to project a positioning mark pattern onto the glue container (15) through a pattern projection device (14), ensuring that the center of the projection pattern is concentric with the upper surface of the glue container (15); Step 2: manually hold the handle (1) and the sheet metal bending part (4), and pull the sheet metal bending part (4) toward the handle (1); then place the extended end of the base plate (6) into the head of the fastener (16) to be glued on the workpiece (17); Step 3: After the positioning mark projection pattern is transferred to the surface of the workpiece (17), the positioning mark projection pattern is adjusted so that its center is concentric with the center of the non-sealed head of the fastener (16), that is, the center of the glue container (15) is simultaneously ensured to be concentric with the center of the head of the fastener (16) to be sealed; Step 4: manually press the first stopper (11) on the sheet metal bending part (4) against the surface of the workpiece (17) and then slowly and evenly release the grip, so that the bottom plate (6) drives the glue container (15) to vertically and slowly approach the head of the fastener (16) to be packaged at a uniform speed, and the packaging is completed after the second stopper (12) on the bottom plate (6) contacts the surface of the workpiece (17); Step 5: Slowly and evenly hold the sheet metal bending part (4) to allow the bottom plate (6) to drive the glue container (15) vertically and slowly and evenly move away from the fastener (16). After moving away from the top of the fastener (16) and sealing the head, remove the fastener sealing tool.

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