Single-cylinder squeeze riveter

Abstract

The utility model provides a single-cylinder squeeze riveter which comprises a bow frame assembly and a shell assembly, the bow frame assembly comprises an upper bow frame and a lower bow frame, the upper bow frame and the lower bow frame are rotatably connected through a bow frame roller pin, one end of the upper bow frame is rotatably connected with a second roller, and the other end of the upper bow frame is rotatably connected with a third roller. The shell assembly comprises a shell and a rear cover, the middle of the shell is of a hollow structure, an opening is formed in one end of the shell, a spring piece is rotationally connected to the inner wall of the end, close to the opening, of the shell, and a piston is arranged in the shell; the detachable bow rack assembly and the shell assembly are designed and assembled in the later period, different bow rack assemblies are replaced and matched with the shell assembly for use according to different use requirements, only the bow rack assembly needs to be customized, and the shell assembly is designed to be universal.

Description

Technical Field

[0001] This utility model belongs to the field of riveting machines, specifically a single-cylinder riveting machine. Background Technology

[0002] Press riveting is a very common connection method. In the aircraft manufacturing and assembly process, press riveting has the advantages of good surface quality, small deformation, and high connection strength. Therefore, in actual operation, press riveting is preferred to connect workpieces as long as the structural process allows. Compared with other Russian-style press riveting machines, single-cylinder press riveting machines have advantages such as large riveting force, good ergonomics, and easy gripping. While possessing these advantages, single-cylinder press riveting machines are also small in size and light in weight.

[0003] Currently, when using riveting machines, the bow frame is usually fixed to the housing. While this design ensures stability during riveting to a certain extent, different users have different requirements for parameters such as bow height and throat depth. This necessitates the customization of different riveting machines, which increases the operating cost.

[0004] In summary, this utility model provides a single-cylinder riveting machine to solve the above problems. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a single-cylinder riveting machine. This solves the problem that in the prior art, different users have different requirements for parameters such as bow height and throat depth of the riveting machine, which necessitates the customization of different riveting machines, thus increasing the operating cost of the riveting machine.

[0006] A single-cylinder riveting machine includes a bow frame assembly and a housing assembly. The bow frame assembly includes an upper bow frame and a lower bow frame, which are rotatably connected by bow frame needle rollers. One end of the upper bow frame is rotatably connected to a second roller, and the lower bow frame has two horizontally aligned needle rollers at the end near the second roller. The housing assembly includes a shell and a rear cover. The middle of the shell is hollow, and one end has an opening. A spring plate is rotatably connected to the inner wall of the shell near the opening. A piston is disposed inside the shell, and a cone block is disposed at the end of the piston near the opening. The rear cover is installed at the end of the shell away from the opening. An inflation chamber is disposed inside the rear cover. The top of the inflation chamber communicates with the inside of the shell through a connecting channel, and the bottom of the inflation chamber is connected to an air inlet, which is mounted on the surface of the rear cover.

[0007] Furthermore, one side of the upper bow frame includes a concave portion, a protruding portion, and a flat portion. The upper bow frame and the lower bow frame have the same structure. The protruding portions of the upper bow frame and the lower bow frame are rotatably connected. The concave portions are arranged close to each other. The second roller is rotatably connected to the flat portion of the upper bow frame. The outer ring of the roller is fixedly connected to the surface of the second roller. The needle roller is rotatably connected to the flat portion of the lower bow frame, and the first roller is fixedly connected to the surface of the needle roller.

[0008] Furthermore, a spring slot is provided at one end of the upper bow frame near the flat surface, and one end of the spring plate is engaged in the spring slot.

[0009] Furthermore, a conical rod is fixedly connected to one end of the piston, the conical block is movably sleeved on the surface of the conical rod, one end of the conical rod passes through the piston and is fixedly connected by a locking nut, and a return spring is movably wound around the surface of the conical rod, the return spring is connected to the surface of the conical block and the piston, and the return spring includes an inner return spring and an outer return spring.

[0010] Furthermore, the outer casing has a mounting hole at one end near the opening, and the mounting hole is matched to the size of the outer ring of the bow frame.

[0011] Furthermore, a valve stem is installed on the top of the rear cover, with one end of the valve stem extending into the inflation chamber and the other end fitted with a valve stem plug. The end of the valve stem inserted into the inflation chamber is connected to the inner wall of the rear cover via a valve stem spring.

[0012] Furthermore, one end of the spring sheet is rotatably connected to the side wall of the outer casing, and the other end of the spring sheet is connected to the upper bow frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model designs a detachable bow frame assembly and a shell assembly. The two are assembled later. Depending on the usage requirements, different bow frame assemblies can be replaced to match the shell assembly for use. Only the bow frame assembly needs to be customized, while the shell assembly is designed to be universal.

[0015] 2. This utility model sets up an inflatable chamber inside the rear cover and uses the air inlet at the rear end to control the advancement and retraction of the cone block, thus providing more space for hand grip and making it more convenient.

[0016] 3. The modified riveting machine bow frame assembly designed in this utility model has a housing component that can be used as a general component. For different work positions of users, the bow frame assembly can be specially customized according to different requirements for parameters such as bow height and throat depth of the riveting machine, which improves the versatility of the product. Unlike the Russian-style riveting machine that uses air intake from the middle, this riveting machine uses air intake from the rear, which improves the comfort of use, makes it more convenient for users to hold, and is more ergonomic. At the same time, this riveting machine also has the characteristics of small size and large riveting force. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the bow frame assembly structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the shell assembly structure of this utility model.

[0020] In the picture:

[0021] 1. Bow frame assembly; 101. Upper bow frame; 102. Lower bow frame; 2. Housing assembly; 201. Outer shell; 202. Rear cover; 3. Bow frame needle roller; 4. Bow frame outer ring; 5. Roller outer ring; 6. Needle roller; 7. Roller one; 8. Roller two; 9. Inflation chamber; 10. Spring plate; 11. Cone block; 12. Return spring; 13. Piston; 14. Locking nut; 15. Valve stem; 16. Valve stem plug; 17. Valve stem spring; 18. Air inlet. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] like Figure 1-3As shown, this utility model provides a single-cylinder riveting machine, including a bow frame assembly 1 and a housing assembly 2. The bow frame assembly 1 includes an upper bow frame 101 and a lower bow frame 102, which are rotatably connected by bow frame needle rollers 3. One end of the upper bow frame 101 is rotatably connected to a roller 8, and the lower bow frame 102 has two horizontally aligned needle rollers 6 near the roller 8. The housing assembly 2 includes a shell 201 and a rear cover 202. The middle part of the shell 201 is hollow, and... An opening is provided at one end of the outer casing 201. A spring plate 10 is rotatably connected to the inner wall of the end of the outer casing 201 near the opening. A piston 13 is provided inside the outer casing 201. A cone block 11 is provided at the end of the piston 13 near the opening of the outer casing 201. A rear cover 202 is installed at the end of the outer casing 201 away from the opening. An inflation chamber 9 is provided inside the rear cover 202. The top of the inflation chamber 9 is connected to the inside of the outer casing 201 through a connecting channel. An air inlet 18 is connected to the bottom of the inflation chamber 9. The air inlet 18 is installed on the surface of the rear cover 202.

[0024] As one embodiment of this utility model, one side of the upper bow frame 101 includes a concave part, a protruding part, and a flat part. The upper bow frame 101 and the lower bow frame 102 have the same structure. The protruding parts of the upper bow frame 101 and the lower bow frame 102 are rotatably connected, and the concave parts are arranged close to each other. The second roller 8 is rotatably connected to the flat part of the upper bow frame 101. The outer ring 5 of the roller is fixedly connected to the surface of the second roller 8. The needle roller 6 is rotatably connected to the flat part of the lower bow frame 102, and the first roller 7 is fixedly connected to the surface of the needle roller 6.

[0025] As one embodiment of this utility model, a spring plate groove is provided at one end of the upper bow frame 101 near the flat part, and one end of the spring plate 10 is locked in the spring plate groove.

[0026] In one embodiment of this utility model, a conical rod is fixedly connected to one end of the piston 13, and a conical block 11 is movably sleeved on the surface of the conical rod. One end of the conical rod passes through the piston 13 and is fixedly connected by a locking nut 14. A return spring 12 is movably wound around the surface of the conical rod. The return spring 12 is connected to the surfaces of the conical block 11 and the piston 13. The return spring 12 includes an inner return spring and an outer return spring.

[0027] As one embodiment of this utility model, the outer shell 201 has a mounting hole at one end near the opening, and the mounting hole matches the size of the outer ring 4 of the bow frame.

[0028] As one embodiment of this utility model, a valve stem 15 is installed on the top of the rear cover 202. One end of the valve stem 15 extends into the inflation chamber 9, and a valve stem plug 16 is installed on the other end. The end of the valve stem 15 inserted into the inflation chamber 9 is connected to the inner wall of the rear cover 202 through a valve stem spring 17.

[0029] In one embodiment of this utility model, one end of the spring sheet 10 is rotatably connected to the side wall of the outer casing 201, and the other end of the spring sheet 10 is connected to the upper bow frame 101.

[0030] Specific working principle:

[0031] By inserting the outer ring 4 of the bow frame into the mounting hole, one end of the bow frame assembly 1 is inserted into the housing assembly 2, and the spring plate 10 is engaged on the surface of the upper bow frame 101. In its natural state, the elastic force of the spring plate 10 causes the upper bow frame 101 to rotate, and the concave parts of the upper bow frame 101 and the lower bow frame 102 move away from each other. This controls the valve stem plug 16, providing a working stroke for the piston 13. Under the drive of the piston 13, the cone block 11 moves towards the bow frame assembly 1, and then the cone block 11 approaches the outer ring 5 of the roller. When the upper bow frame 101 and the lower bow frame 102 are pressed together, the other ends of the upper bow frame 101 and the lower bow frame 102 move closer to each other. After the concave surfaces move closer together, the riveting operation is complete. After the valve stem plug 16 is released, under the action of the return spring 12, the cone block 11 returns to its original position and moves away from the bow frame assembly 1. The cone block 11 disengages from between the upper bow frame 101 and the lower bow frame 102. Under the action of the spring plate 10, the upper bow frame 101 moves clockwise, and the upper and lower riveting heads move away from the workpiece being pressed. A complete working process consists of a working stroke and a return stroke. The reversal of the forward and reverse strokes is controlled by the operator through a manual switch.

[0032] During operation, the gas entering the inflation chamber 9 must maintain a certain pressure to ensure normal machine operation. This places high demands on the sealing of the air passage and the fit of the internal components. Therefore, the dimensions of the piston 13 and the housing assembly 2 are subject to strict requirements. The smooth movement of the piston 13 ensures the smooth movement of the cone block 11 and the roller 8, thereby guaranteeing the stable completion of each riveting operation. The upper and lower arch frames are also crucial factors in ensuring successful crimping. They must meet both dimensional and strength / toughness requirements to optimize the product's performance and quality.

[0033] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A single-cylinder riveting machine, comprising a bow frame assembly (1) and a housing assembly (2), characterized in that: The bow frame assembly (1) includes an upper bow frame (101) and a lower bow frame (102), which are rotatably connected by bow frame needle rollers (3). One end of the upper bow frame (101) is rotatably connected to a roller (8), and the lower bow frame (102) has two horizontally aligned needle rollers (6) near the roller (8). The housing assembly (2) includes an outer shell (201) and a rear cover (202). The middle part of the outer shell (201) is hollow, and one end is open. The outer shell (201) is close to the opening. A spring plate (10) is rotatably connected to the inner wall of one end of the housing (201). A piston (13) is provided inside the housing (201). A cone block (11) is provided at the end of the piston (13) near the opening of the housing (201). A rear cover (202) is installed at the end of the housing (201) away from the opening. An inflation chamber (9) is provided inside the rear cover (202). The top of the inflation chamber (9) is connected to the inside of the housing (201) through a connecting channel. An air inlet (18) is connected to the bottom of the inflation chamber (9). The air inlet (18) is installed on the surface of the rear cover (202).

2. The single-cylinder riveting machine as described in claim 1, characterized in that: One side of the upper bow frame (101) includes a concave part, a protruding part, and a flat part. The upper bow frame (101) and the lower bow frame (102) have the same structure. The protruding parts of the upper bow frame (101) and the lower bow frame (102) are rotatably connected. The concave parts are arranged close to each other. The second roller (8) is rotatably connected to the flat part of the upper bow frame (101). The outer ring of the roller (5) is fixedly connected to the surface of the second roller (8). The needle roller (6) is rotatably connected to the flat part of the lower bow frame (102), and the first roller (7) is fixedly connected to the surface of the needle roller (6).

3. The single-cylinder riveting machine as described in claim 2, characterized in that: The upper bow frame (101) has a spring slot at one end near the flat surface, and one end of the spring plate (10) is engaged in the spring slot.

4. The single-cylinder riveting machine as described in claim 1, characterized in that: One end of the piston (13) is fixedly connected to a cone rod. The cone (11) is movably sleeved on the surface of the cone rod. One end of the cone rod passes through the piston (13) and is fixedly connected by a locking nut (14). A return spring (12) is movably wound around the surface of the cone rod. The return spring (12) is connected to the surface of the cone (11) and the piston (13). The return spring (12) includes an inner return spring and an outer return spring.

5. The single-cylinder riveting machine as described in claim 1, characterized in that: The outer casing (201) has a mounting hole at one end near the opening, and the mounting hole is matched with the size of the outer ring (4) of the bow frame.

6. The single-cylinder riveting machine as described in claim 1, characterized in that: A valve stem (15) is installed on the top of the rear cover (202). One end of the valve stem (15) extends into the inflation chamber (9), and the other end is fitted with a valve stem plug (16). The end of the valve stem (15) inserted into the inflation chamber (9) is connected to the inner wall of the rear cover (202) by a valve stem spring (17).

7. The single-cylinder riveting machine as described in claim 1, characterized in that: One end of the spring plate (10) is rotatably connected to the side wall of the outer casing (201), and the other end of the spring plate (10) is connected to the upper bow frame (101).

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