Rotary rolling closing-in machine for self-plugging rivet

Abstract

The utility model relates to the technical field of long and thin part closing-in devices, and provides a rotary rolling closing-in machine for self-plugging rivets, which comprises a closing-in assembly, a chuck, a positioning assembly and a rotary driving assembly, the closing-in assembly is distributed along the circumferential surface of the to-be-machined part and arranged at the top of the chuck, the rotary driving assembly is connected with the chuck and used for driving the chuck to rotate and enabling the closing-in assembly to roll the to-be-machined part, and the positioning assembly is arranged at the rotation center of the chuck and used for placing the to-be-machined part. The chuck can rotate relative to the positioning assembly. According to the utility model, the product quality can be improved in a rolling manner.

Description

Technical Field

[0001] The utility model belongs to the technical field of closing devices for slender parts, and in particular relates to a rotary rolling closing machine for blind rivets. Background Art

[0002] Blind rivets have the same shear strength as traditional bolts, and also have the same clamping force, anti-loosening and anti-vibration, lightning protection and other properties as high-lock bolts. They have large diameter specifications, high strength, good fatigue performance, and can be installed on one side (smooth cross-section, no need for grinding); when they are used in the aviation and aerospace fields, they often require an additional closing process.

[0003] The existing blind rivet closing processing method is to use extrusion processing for mechanical processing. However, during the extrusion processing of the blind rivet, the rod is easily deformed by the force, the outer circle size is difficult to guarantee, and it is difficult to ensure product quality. The quality of the produced blind rivets is low.

[0004] Therefore, for those skilled in the art, how to improve product quality is a technical problem that needs to be solved urgently. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems in the prior art. To this end, one purpose of the present invention is to provide a rotary rolling and closing machine that can improve the quality of products.

[0006] A rotary rolling and closing machine for blind rivets, comprising a closing assembly, a chuck, a positioning assembly, and a rotary drive assembly; the closing assemblies are distributed along the circumference of the part to be processed and are arranged on the top of the chuck; the rotary drive assembly is connected to the chuck and is used to drive the chuck to rotate and cause the closing assembly to roll the part to be processed; the positioning assembly is arranged at the rotation center of the chuck and is used to place the part to be processed; the chuck can rotate relative to the positioning assembly;

[0007] Preferably, the rotary drive assembly includes a first pulley connected to the motor, a transmission belt, and a second pulley, wherein the first pulley and the second pulley are driven by the transmission belt, and the second pulley is fixedly arranged at the bottom of the chuck and coaxial therewith;

[0008] Preferably, a sliding groove cooperating with the closing assembly is provided in the radial direction of the chuck, and the closing assembly moves in the radial direction of the chuck under the drive of the closing drive assembly;

[0009] Preferably, the closing drive assembly includes a synchronous pushing portion connected to a lifting portion, and the synchronous pushing portion moves the closing assembly along the radial direction of the chuck under the lifting of the lifting portion, and closes the workpiece to be processed;

[0010] Preferably, the synchronous pushing portion includes wedge-shaped blocks distributed along the circumference of the closing assembly, the closing assembly includes an inclined surface slidingly engaged with the wedge-shaped blocks, and the wedge-shaped blocks are arranged on the lifting columns of the lifting portion;

[0011] Preferably, the rotary drive assembly further comprises an outer cylinder, an outer cylinder bottom plate, and a guide sleeve fixedly arranged in sequence from top to bottom, the chuck being fixedly arranged on the top of the outer cylinder, the second pulley being fixedly arranged on the bottom of the guide sleeve, the second pulley being rotatably sleeved on the lifting column, the lifting column being located in the guide sleeve and passing through the outer cylinder bottom plate, and the wedge block being located in the outer cylinder;

[0012] Preferably, the positioning assembly includes a positioning tool and a support member, the positioning tool is arranged on the top of the support member, the chuck is rotatably sleeved on the support member, the bottom of the support member is further provided with a vertically arranged linear guide rail, and the closing drive assembly is further provided with a slider that cooperates with the linear guide rail;

[0013] In another embodiment of the present invention, the synchronous pushing portion includes an actuating seat and a connecting member, the two ends of the connecting member are hinged to the actuating seat and the closing assembly respectively, the lifting portion includes a second servo cylinder, and the actuating seat is arranged on the top of the second servo cylinder;

[0014] Another embodiment of the present invention further includes a return spring, one end of which is fixed and the other end is connected to the closing assembly. When the closing assembly moves toward the workpiece in the radial direction of the workpiece, the return spring is in a stretched state. When the synchronous pushing portion falls, the closing assembly is reset.

[0015] The beneficial effects of the utility model are as follows: improving the quality of the product by rolling; rolling blind rivets of different diameters by the closing component being movable along the radial direction of the chuck; and achieving independent functions of the closing drive component, the rotation drive component and the positioning component by the unique positioning component setting method. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the specific structure of the rotary rolling and sealing machine of the utility model;

[0017] Figure 2 This is a specific schematic diagram of the chuck of the utility model;

[0018] Figure 3 This is a schematic diagram of the specific structure of the closing drive assembly of the utility model;

[0019] Figure 4 This is a schematic diagram of the specific structure of the synchronous driving part of the utility model;

[0020] Figure 5 is a cross-sectional view of the positioning assembly of the present utility model;

[0021] Figure 6 for Figure 5 A magnified view of the middle part A;

[0022] Figure 7 This is a schematic diagram of the specific structure of the rotary drive assembly of the present utility model;

[0023] Figure 8 It is a side view of the rotary drive assembly of the present invention;

[0024] Figure 9 This is a cross-sectional view of a closing assembly according to another embodiment of the present invention;

[0025] Figure 10 This is a detailed structural diagram of a synchronous driving portion of another embodiment of the present utility model;

[0026] Description of reference numerals:

[0027] 100, closing assembly; 101, pressing plate; 102, pressing block; 103, pressing head;

[0028] 200, chuck; 201, slide; 202, positioning assembly; 203, support member; 204, linear guide; 205, slider; 206, bearing; 207, return spring; 208, positioning fixture;

[0029] 300, closing drive assembly; 301, synchronous pusher; 302, lifting unit; 303, lifting column; 304, follower; 305, servo cylinder; 306, hollow base; 307, push block; 308, actuating seat; 309, connecting member; 310, second servo cylinder;

[0030] 400, rotary drive assembly; 401, first pulley; 402, transmission belt; 403, second pulley; 404, guide sleeve; 405, outer cylinder bottom plate; 406, outer cylinder; DETAILED DESCRIPTION

[0031] In order to better understand the purpose, structure and function of the present invention, the present invention is described in further detail below with reference to the accompanying drawings.

[0032] In the description of the utility model, it should be understood that the terms "up", "down", "left", "right", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the utility model.

[0033] The utility model provides a rotary rolling closing machine for blind rivets, such as Figures 1 to 4 Said, it includes a closing assembly 100, a chuck 200, a positioning assembly 202, and a rotating drive assembly 400; the closing assembly 100 is distributed along the circumference of the blind rivet to be processed and is arranged on the top of the chuck 200, and the rotating assembly is connected to the chuck 200, for driving the chuck 200 to rotate and causing the closing assembly 100 to roll the blind rivet to be processed. The positioning assembly 202 is arranged at the rotation center of the chuck 200 and is used to place the blind rivet to be processed, and the chuck 200 can rotate relative to the positioning assembly 202. The utility model improves the quality of the product by driving the chuck 200 to rotate relative to the blind rivet to be processed and causing the closing assembly 100 to roll the blind rivet to be processed. The details are as follows:

[0034] like Figures 5 and 6 As shown, the positioning assembly 202 includes a support member 203 and a positioning tool 208, the positioning tool 208 is arranged on the top of the support member 203, and the chuck 200 is rotatably sleeved on the support member 203, so as to enable the chuck 200 to rotate around the support member 203 while limiting the vertical movement of the support member 203; further, a bearing 206 is provided at the bottom of the chuck 200, the bearing 206 is sleeved on the support member 203, and a limiting groove is left between the bearing 206 and the chuck 200, and the limiting groove is aligned with the support member 203. The limiting part on the member 203 is used to enable the chuck 200 to rotate around the support member 203 while limiting the vertical movement of the support member 203. The bottom of the support member 203 is also provided with a vertically arranged linear guide rail 204. The closing drive assembly 300 is provided with a cavity for accommodating the support member 203. The closing drive assembly 300 is also provided with a slider 205 that cooperates with the linear guide rail 204 to make the functions of the positioning assembly 202, the closing drive assembly 300 and the rotation drive assembly 400 independent of each other without interference.

[0035] like Figure 2As shown, a slide groove 201 is radially arranged on the chuck 200, and the closing assembly 100 includes a pressure block 102, a pressure head 103 and a pressure plate 101. The pressure block 102 cooperates with the slide groove 201, and the pressure head 103 is arranged on the pressure block 102. The pressure head 103 is a roller, and the pressure plate 101 is arranged across the slide groove 201 to prevent the pressure block 102 from detaching from the slide groove 201.

[0036] like Figures 3 and 4 As shown, the closing drive assembly 300 includes a lifting part 302 and a synchronous pushing part 301. The synchronous pushing part 301 is arranged on the lifting part 302. When the lifting part 302 is lifted, the synchronous pushing part 301 moves the closing assembly 100 along the slide groove 201 of the chuck 200 and closes the blind rivet to be processed. Specifically:

[0037] The synchronous pushing part 301 includes a hollow base 306, and a push block 307 arranged on the hollow base 306 and cooperating with the pressure block 102. The push blocks 307 are distributed along the circumference of the closing component 100; further, the push block 307 is a wedge-shaped block, and the pressure block 102 includes an inclined surface cooperating with the wedge-shaped block. When the wedge-shaped block rises, the pressure block 102 moves along the slide groove 201.

[0038] The lifting unit 302 includes a lifting column 303, a follower 304, and a first servo cylinder 305. The hollow base 306 and the follower 304 are respectively disposed at the upper and lower ends of the lifting column 303. The first servo cylinder 305 is disposed below the follower 304. The follower 304 is provided with the slider 205 described above, which cooperates with the linear guide 204. When the lifting unit 302 is raised or lowered, the support member 203 remains disengaged. Compared to the prior art methods of closing the mouth using hydraulic or pneumatic pressure, which are not suitable for rapid switching between high and low speeds, the present invention achieves higher closing efficiency. Furthermore, in order to close the blind rivets of different sizes, the closing components 100 are numbered in at least two groups, the push blocks 307 are the same in number as the closing components 100, and several of the push blocks 307 are arranged on the hollow base 306. When closing, the first servo cylinder 305 drives the follower 304, the lifting column 303, the hollow base 306 and several push blocks 307 to move upward, and several of the push blocks 307 will push several of the closing components 100 to move radially along the chuck 200 and close the blind rivets to be processed.

[0039] The rotary drive assembly 400 includes a belt transmission part, a guide sleeve 404, an outer cylindrical base plate 405, and an outer cylinder 406; the belt transmission part includes a first pulley 401 connected to the motor, a transmission belt 402, and a second pulley 403. The first pulley 401 and the second pulley 403 are transmitted through the transmission belt 402. The second pulley is fixedly arranged at the bottom of the chuck 200 and is coaxial with it. Furthermore, the second pulley 403 is sleeved on the lifting column 303; the outer cylinder 406, the outer cylinder bottom plate 405, and the guide sleeve 404 are arranged in sequence from top to bottom, the lifting column 303 is located in the guide sleeve 404 and passes through the outer cylinder bottom plate 405, and the wedge block is located in the outer cylinder 406, for making the rotation drive assembly 400 and the closing drive assembly 300 work independently of each other; when the rolling closing is required, the second pulley 403 of the belt transmission part rotates, and the second pulley 403 drives the outer cylinder bottom plate 405 to rotate through the guide sleeve 404, and the outer cylinder bottom plate 405 drives the chuck 200 to rotate through the outer cylinder 406, and the chuck 200 drives the roller of the closing assembly 100 to roll the blind rivet to be processed.

[0040] The implementation method of this embodiment:

[0041] The blind rivet to be processed is placed on the positioning assembly 202, and the synchronous pushing part 301 is lifted by the lifting part 302. The synchronous pushing part 301 pushes the closing assembly 100 to move synchronously toward the blind rivet to be processed under the jacking action, and then the closing assembly 100 is started by starting the rotary drive assembly 400 to close the blind rivet to be processed.

[0042] Example 2

[0043] The present invention provides another installation method of the positioning component 202. On the basis of Example 1, the upper end of the support member 203 is provided with a horizontally arranged annular guide rail, and the chuck 200 is provided with an annular slide groove 201 that cooperates with the annular guide rail, which is used to enable the chuck 200 to rotate around the support member 203 while limiting the vertical movement of the support member 203. The lower end of the support member 203 is also provided with a vertically arranged linear guide rail 204, and the closing drive component 300 is provided with a cavity for accommodating the support member 203. The closing drive component 300 is also provided with a slider 205 that cooperates with the linear guide rail 204, which is used to make the functions of the positioning component 202, the closing drive component 300 and the rotation drive component 400 independent of each other without interference.

[0044] Example 3

[0045] The present invention provides another technical solution of the closing drive assembly 300. Based on the embodiment 1, as shown in FIG. Figure 10 As shown, the synchronous pushing part 301 includes an actuating seat 308 and a connecting member 309. The actuating seat 308 is arranged on the lifting part 302, and the two ends of the connecting member 309 are respectively hinged to the actuating seat 308 and the pressure block 102; wherein, a plurality of the connecting members 309 can be arranged on the actuating seat 308, and the lifting part 302 is at least one second servo cylinder 310.

[0046] Example 3

[0047] In order to further improve the closing efficiency, based on Example 1, Figure 9 As shown, the closing assembly 100 also includes a reset spring 207, one end of which is fixed and the other end is connected to the closing assembly 100. When the closing assembly 100 moves toward the blind rivet to be processed along the radial direction of the blind rivet to be processed, the reset spring 207 is in a stretched state. When the synchronous pushing part 301 falls, the closing assembly 100 is reset.

[0048] It can be seen that the utility model improves the quality of the product by rolling; the closing component 100 can move radially along the chuck 200 to achieve rolling of blind rivets of different diameters; and the unique positioning component 202 setting method can achieve that the closing drive component 300, the rotation drive component 400 and the positioning component 202 have independent functions.

[0049] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A rotary rolling and closing machine for blind rivets, characterized by: It includes a closing assembly (100), a chuck (200), a positioning assembly (202), and a rotation driving assembly (400); The closing assembly (100) is distributed along the circumference of the part to be processed and is arranged on the top of the chuck (200); the rotation drive assembly (400) is connected to the chuck (200) and is used to drive the chuck (200) to rotate and enable the closing assembly (100) to roll the part to be processed; The positioning assembly (202) is arranged at the rotation center of the chuck (200) and is used to place the part to be processed. The chuck (200) can rotate relative to the positioning assembly (202).

2. The rotary rolling and closing machine for blind rivets according to claim 1, characterized in that: The rotary drive assembly (400) comprises a first pulley (401) connected to a motor, a transmission belt (402), and a second pulley (403); the first pulley (401) and the second pulley (403) are driven by the transmission belt (402); the second pulley (403) is fixedly arranged at the bottom of the chuck (200) and is coaxial therewith.

3. The rotary rolling and closing machine for blind rivets according to claim 2, characterized in that: The chuck (200) is provided with a sliding groove (201) in the radial direction thereof to cooperate with the closing assembly (100), and the closing assembly (100) moves radially along the chuck (200) under the drive of the closing drive assembly (300).

4. The rotary rolling and closing machine for blind rivets according to claim 3, characterized in that: The closing drive assembly (300) includes a synchronous pushing portion (301) connected to a lifting portion (302). When the lifting portion (202) is lifted, the synchronous pushing portion (301) moves the closing assembly (100) along the radial direction of the chuck (200) and closes the part to be processed.

5. The rotary rolling and closing machine for blind rivets according to claim 4, characterized in that: The synchronous pushing portion (301) includes wedge-shaped blocks distributed along the circumference of the closing component (100), and the closing component (100) includes an inclined surface that slides with the wedge-shaped blocks; The wedge-shaped block is arranged on the lifting column (303) of the lifting part (302).

6. The rotary rolling and closing machine for blind rivets according to claim 5, characterized in that: The rotary drive assembly (400) further comprises an outer cylinder (406), an outer cylinder bottom plate (405), and a guide sleeve (404) which are fixedly arranged in sequence from top to bottom; The chuck (200) is fixedly arranged on the top of the outer cylinder (406), the second pulley (403) is fixedly arranged on the bottom of the guide sleeve (404), and the second pulley (403) is rotatably sleeved on the lifting column (303); The lifting column (303) is located in the guide sleeve (404) and passes through the outer cylinder bottom plate (405), and the wedge block is located in the outer cylinder (406).

7. The rotary rolling and closing machine for blind rivets according to claim 5, characterized in that: The positioning assembly (202) includes a positioning tool (208) and a support member (203). The positioning tool is arranged on the top of the support member (203). The chuck (200) is rotatably mounted on the support member (203). A vertically arranged linear guide rail (204) is also provided at the bottom of the support member (203). The closing drive assembly (300) is also provided with a slider (205) that cooperates with the linear guide rail (204).

8. The rotary rolling and closing machine for blind rivets according to claim 4, characterized in that: The synchronous pushing portion (301) comprises an actuating seat (308) and a connecting member (309), and two ends of the connecting member (309) are hinged to the actuating seat (308) and the closing assembly (100) respectively; The lifting portion (302) includes a second servo cylinder (310), and the actuating seat (308) is arranged on the top of the second servo cylinder (310).

9. The rotary rolling and closing machine for blind rivets according to claim 4, characterized in that: The invention also includes a return spring (207), one end of which is fixed and the other end is connected to the closing assembly (100). When the closing assembly (100) moves toward the part to be processed along the radial direction of the part to be processed, the return spring (207) is in a stretched state. When the synchronous pushing part (301) falls, the closing assembly (207) is reset.

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