Fastener covering and sealing tool

Abstract

The utility model discloses a fastener sealing tool which comprises a sealing cylinder and a piston rod, the two ends of the sealing cylinder are open, the piston rod is inserted from one end of the sealing cylinder, a piston is arranged at the head of the piston rod, and the piston is tightly attached to the inner wall of the sealing cylinder. An opening in the other end of the cover sealing cylinder is a glue injection opening, the cover sealing cylinder is of a transparent structure, and scale marks are arranged on the outer wall of the cover sealing cylinder. According to the utility model, the scales are arranged on the cover sealing cylinder body, so that the using amount can be accurately controlled when sealant is filled, the sealing effect can be ensured, waste is avoided, the cover sealing cost is reduced, and the cover sealing efficiency is improved; during covering and sealing, the sealant is limited in the sealant injection opening or the sealant injection cover, the sealant cannot overflow, the forming effect after covering and sealing is good, and the appearance quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fastener installation, in particular to a fastener covering tool. Background Art

[0002] During the assembly of aircraft, the heads of fasteners in the high-sealing and anti-leakage areas of fuel tanks need to be sealed with sealants. However, due to the lack of suitable operating tools, the sealants on the heads of fasteners have not been able to meet the design requirements for anti-leakage or sealing thickness.

[0003] There are many problems with the existing sealing methods:

[0004] 1. Operators seal the sealant cover on nuts and bolts with bare hands. When operating, they need to apply soapy water on their hands first to prevent the sealant from sticking to their hands and make the operation easier. However, soapy water will contaminate the sealant and the sealing efficiency is low.

[0005] 2. Use plastic bags such as mounting bags to hold sealant. After cutting the edges, squeeze the sealant out of the gap for sealing. Although this method will not cause sealant pollution, the sealant is very sticky and difficult to squeeze out, and the plastic bag is easy to break during the squeezing process, which affects the sealing efficiency. After use, a lot of sealant will remain on the inner wall of the plastic bag, resulting in a lot of sealant waste.

[0006] 3. Use a glue gun to inject sealant around the fastener head and the support surface, and then use a shaping tool to shape and remove visible cavities and bubbles. This method is difficult to ensure that the shape and size of the cover seal meet the requirements. The surface of the pier head may have uneven glue coating and poor sealing. In order to achieve the anti-leakage detection requirement, excessive use of sealant will cause waste of sealant and increase the weight of the aircraft, which is not advisable. Utility Model Content

[0007] In order to solve the above problems, the utility model provides a fastener sealing tool, which is easy to operate and has high sealing efficiency, and can control the amount of sealant used, thereby saving costs.

[0008] To this end, the technical solution of the utility model is: a fastener sealing tool, including a sealing cylinder and a piston rod, both ends of the sealing cylinder are open, the piston rod is inserted from one end of the sealing cylinder, a piston is provided at the head of the piston rod, and the piston is tightly fitted to the inner wall of the sealing cylinder; the other end of the sealing cylinder is opened as a glue injection port, the sealing cylinder is a transparent structure, and scale lines are provided on the outer wall.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: it also includes a plurality of glue injection covers with different calibers, and the glue injection covers are installed on the glue injection port of the cover sealing cylinder.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the outer side of the glue injection port of the sealing cylinder is provided with an external thread structure, the glue injection cover is a hollow structure, and an internal thread is provided on the top; the glue injection cover is sleeved on the outer side of the glue injection port, and the two are fixed with threads.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the diameters of the two ends of the glue injection cover are inconsistent, and the inner diameter of one end matches the outer diameter of the glue injection port.

[0012] On the basis of the above solution and as a preferred solution of the above solution: the inner wall of the glue injection cover is a spherical surface.

[0013] When using:

[0014] 1) Select a sealing cylinder or injection cover of corresponding size according to the size of the bolts and nuts; if the cylinder size is appropriate, the cylinder can be used directly for sealing; if the cylinder size is not appropriate, select an injection cover of appropriate specifications and fix it on the injection port of the cylinder with threads;

[0015] 2) Fill the sealant into the sealing cylinder. There are scales on the sealing cylinder to accurately control the amount of sealant filled in;

[0016] 3) Place the injection port or injection cover of the sealing cylinder filled with sealant on the head of the fastener or nut or pier head that needs to be sealed;

[0017] 4) Squeeze the piston rod. After the piston applies appropriate pressure to the sealant, slowly rotate it clockwise to disengage it, and the cover seal is completed.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. Set scales on the sealing cylinder to accurately control the amount of sealant when filling it, which can ensure the sealing effect without causing waste, reduce the sealing cost and improve the sealing efficiency;

[0020] 2. When sealing, the sealant is confined to the injection port or the injection cover, and the sealant will not overflow. The forming effect after sealing is good, ensuring the appearance quality;

[0021] 3. The piston can be used to push out all the sealant in the cylinder, reducing the residual sealant on the wall and reducing the waste of sealant. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings.

[0023] Figure 1 It is a structural schematic diagram of Example 1;

[0024] Figure 2 It is a structural cross-sectional view of Example 1;

[0025] Figure 3 It is a structural schematic diagram of Example 2;

[0026] Figure 4 It is an exploded view of the parts of Example 2;

[0027] Figure 5 It is a structural cross-sectional view of Example 2;

[0028] Figure 6 It is a structural schematic diagram of Example 3;

[0029] Figure 7 This is a structural cross-sectional view of Example 3.

[0030] The markings in the figure are: sealing cylinder 1, glue injection port 11, scale line 12, external thread structure 13, piston rod 2, piston 21, glue injection cover 3, spherical surface 31. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0033] Example 1

[0034] The fastener sealing tool described in this embodiment includes a sealing cylinder 1 and a piston rod 2. Both ends of the sealing cylinder 1 are open. The piston rod 2 is inserted from one end of the sealing cylinder 1. A piston 21 is provided at the head of the piston rod 2. The piston 21 fits tightly with the inner wall of the sealing cylinder 1. The other end of the sealing cylinder 1 is opened as a glue injection port 11. The sealing cylinder 1 can be made of transparent plastic, and a scale line 12 is provided on the outer wall. Sealing cylinders of different calibers can be prepared according to the sizes of commonly used bolts and nuts, and the piston size matches the inner diameter of the sealing cylinder.

[0035] When using:

[0036] 1) Select the corresponding size of the sealing cylinder according to the size of the bolts and nuts;

[0037] 2) Fill the sealant into the sealing cylinder. There are scales on the sealing cylinder to accurately control the amount of sealant filled in;

[0038] 3) Place the injection mask of the sealing cylinder filled with sealant on the head of the fastener or nut or pier head that needs to be sealed;

[0039] 4) Squeeze the piston rod. After the piston applies appropriate pressure to the sealant, slowly rotate it clockwise to disengage it, and the cover seal is completed.

[0040] Example 2

[0041] The structure of this embodiment is similar to that of the embodiment 1. In order to reduce the cost of cylinders with different calibers, injection covers 3 with different calibers can be provided. An external thread structure 13 is provided on the outer side of the injection port 11 of the sealed cylinder 1. The injection cover 3 is an overall hollow structure. The diameters of the two ends of the injection cover 3 are inconsistent. The inner diameter of one end matches the outer diameter of the injection port 11. An internal thread is provided in the port, which can be sleeved on the outer side of the injection port 11, and the two are fixed with threads.

[0042] When using:

[0043] 1) Select the corresponding size of the glue injection cover according to the size of the bolt and nut, and fix the glue injection cover on the glue injection port;

[0044] 2) Fill the sealant into the sealing cylinder. There are scales on the sealing cylinder to accurately control the amount of sealant filled in;

[0045] 3) After filling the sealant, place the injection cover on the head of the fastener or the nut or pier head that needs to be sealed;

[0046] 4) Squeeze the piston rod. After the piston applies appropriate pressure to the sealant, slowly rotate it clockwise to disengage it, and the cover seal is completed.

[0047] Example 3

[0048] The structure of this embodiment is similar to that of the embodiment 2, except that a spherical surface 31 can be provided inside the glue injection cover 3 to better shape the sealant.

[0049] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A fastener sealing tool, characterized in that: It includes a sealing cylinder and a piston rod. Both ends of the sealing cylinder are open. The piston rod is inserted from one end of the sealing cylinder. A piston is provided at the head of the piston rod. The piston fits tightly against the inner wall of the sealing cylinder. The other end of the sealing cylinder is opened as a glue injection port. The sealing cylinder is a transparent structure with scale lines on the outer wall.

2. A fastener sealing tool according to claim 1, characterized in that: It also comprises a plurality of glue injection covers with different calibers, and the glue injection covers are installed on the glue injection opening of the cover sealing cylinder.

3. A fastener sealing tool according to claim 2, characterized in that: An external thread structure is arranged on the outside of the glue injection port of the sealing cylinder, and the glue injection cover is a hollow structure with an internal thread arranged on the top; the glue injection cover is sleeved on the outside of the glue injection port, and the two are fixed by threads.

4. A fastener sealing tool according to claim 2, characterized in that: The diameters of the two ends of the glue injection cover are inconsistent, and the inner diameter of one end matches the outer diameter of the glue injection port.

5. A fastener sealing tool according to claim 2, characterized in that: The inner wall of the glue injection cover is a spherical surface.

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