Riveting machine sleeve structure

Abstract

The utility model discloses a sleeve structure of a rotary riveting machine, comprising a frame, and an outer sleeve, a lifting module and a rotating module arranged on the frame. The lifting module is provided with an inner sleeve and a lifting drive assembly. The inner sleeve can be slidably sleeved in the outer sleeve up and down, the lifting drive assembly can drive the inner sleeve to move up and down, and the rotating module can follow the inner sleeve to move up and down. The rotating module is provided with a rotary rivet head, a rotating shaft and a rotating drive assembly. The rotary rivet head is arranged at the lower end of the rotating shaft, the rotating shaft is passed through the inner sleeve, the rotating drive assembly can drive the rotating shaft to rotate relative to the inner sleeve, and a groove that can be filled with grease is provided between the circumferential outer side wall of the inner sleeve and the circumferential inner side wall of the outer sleeve, the grease in the groove can flow out to the gap between the circumferential outer side wall of the inner sleeve and the circumferential inner side wall of the outer sleeve. The utility model adopts a groove that can be filled with grease, so that the inner sleeve and the outer sleeve are not easy to wear, thereby ensuring the stable up and down movement of the inner sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting equipment, in particular to a rotary riveting machine sleeve structure. Background Art

[0002] Riveting is a process that connects and fixes two workpieces by squeezing rivets to deform them. Riveting is one of the riveting processes, which is usually achieved using a riveting machine. The traditional riveting machine mainly includes a frame and an outer sleeve, a lifting module and a rotating module arranged on the frame. The lifting module is provided with an inner sleeve and a lifting drive assembly. The inner sleeve can be slid up and down in the outer sleeve. The rotating module can move up and down with the inner sleeve. The rotating module is provided with a rivet head, a rotating shaft and a rotating drive assembly. The rotating shaft is inserted into the inner sleeve. When working, the rotating shaft is driven by the rotating drive assembly to drive the rivet head to rotate. The pressure rod on the rivet head rotates with the rivet head, and under the drive of the lifting drive assembly, the rotating module is moved downward, so that the pressure rod moves around the rivet in a conical shape and presses down the rivet, thereby flattening the rivet to complete the riveting operation.

[0003] During long-term operation, the inner sleeve and the outer sleeve are easily worn, resulting in an increase in the gap between the inner sleeve and the outer sleeve, causing unstable up and down movement of the inner sleeve. Utility Model Content

[0004] The utility model aims at the defects of the prior art and provides a sleeve structure of a rotary riveting machine, which adopts a groove that can be filled with grease, so that the inner sleeve and the outer sleeve are not easy to wear, and the increase of the gap between the inner sleeve and the outer sleeve is avoided, thereby ensuring the stable up and down movement of the inner sleeve.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sleeve structure of a rotary riveting machine comprises a frame, and an outer sleeve, a lifting module and a rotating module arranged on the frame, the lifting module is provided with an inner sleeve and a lifting drive assembly, the inner sleeve can be slidably sleeved in the outer sleeve up and down, the lifting drive assembly can drive the inner sleeve to move up and down, and the rotating module can move up and down with the inner sleeve, the rotating module is provided with a rotary rivet head, a rotating shaft and a rotating drive assembly, the rotary rivet head is arranged at the lower end of the rotating shaft, the rotating shaft is passed through the inner sleeve, the rotating drive assembly can drive the rotating shaft to rotate relative to the inner sleeve, a groove that can be filled with grease is provided between the circumferential outer side wall of the inner sleeve and the circumferential inner side wall of the outer sleeve, and the grease in the groove can flow out to the gap between the circumferential outer side wall of the inner sleeve and the circumferential inner side wall of the outer sleeve.

[0007] By providing a groove that can be filled with grease between the circumferential outer wall of the inner sleeve and the circumferential inner wall of the outer sleeve, the grease in the groove can flow out to the gap between the circumferential outer wall of the inner sleeve and the circumferential inner wall of the outer sleeve, and the grease in the gap lubricates the inner sleeve and the outer sleeve. Therefore, by using the groove that can be filled with grease, the inner sleeve and the outer sleeve are not easily worn during long-term use, and the gap between the inner sleeve and the outer sleeve is avoided from increasing, thereby ensuring stable up and down movement of the inner sleeve.

[0008] As a preferred solution, the groove is arranged on the circumferential inner side wall of the outer sleeve.

[0009] As a preferred solution, the cross section of the groove is arc-shaped.

[0010] As a preferred solution, the depth of the groove is 1.5 mm-5.0 mm.

[0011] As a preferred solution, the groove is a spiral groove, and the spiral groove extends spirally along the axial direction of the inner sleeve.

[0012] As a preferred solution, the upper end of the spiral groove extends to the upper end surface of the outer sleeve to form an opening.

[0013] As a preferred solution, the spiral groove is a continuous spiral groove.

[0014] As a preferred solution, the outer sleeve is detachably mounted on the frame by screws.

[0015] As a preferred solution, a connecting seat is provided at the lower end of the frame, a through hole is provided on the connecting seat for the inner sleeve to pass through, and the outer sleeve is detachably mounted on the connecting seat by screws.

[0016] As a preferred solution, a positioning groove communicating with the through hole is provided on the lower surface of the connecting seat, and during assembly, the upper end of the outer sleeve is embedded in the positioning groove.

[0017] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, a groove that can be filled with grease is provided between the circumferential outer wall of the inner sleeve and the circumferential inner wall of the outer sleeve. The grease in the groove can flow out to the gap between the circumferential outer wall of the inner sleeve and the circumferential inner wall of the outer sleeve. The grease in the gap lubricates the inner sleeve and the outer sleeve. Therefore, by using the groove that can be filled with grease, the inner sleeve and the outer sleeve are not easily worn during long-term use, and the gap between the inner sleeve and the outer sleeve is avoided from increasing, thereby ensuring stable up and down movement of the inner sleeve.

[0018] In order to more clearly explain the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the assembly structure of a rotary riveting machine according to an embodiment of the utility model;

[0020] Figure 2 It is a cross-sectional schematic diagram of the inner sleeve, outer sleeve, connecting seat, rotating shaft and rotary rivet head of the embodiment of the utility model after assembly;

[0021] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A;

[0022] Figure 4 This is an exploded schematic diagram of the outer sleeve and the connecting seat of an embodiment of the utility model;

[0023] Figure 5 It is a schematic cross-sectional view of an outer sleeve of an embodiment of the utility model.

[0024] Description of the accompanying drawings:

[0025] 10-frame; 11-outer sleeve; 111-groove; 112-first opening; 113-threaded hole; 12-connecting seat 13-screw; 20-lifting module; 21-inner sleeve; 22-lifting drive assembly; 23-lifting frame; 24-first bearing; 25-second bearing; 30-rotating module; 31-spindle head; 311-pressure rod; 32-rotating shaft; 321-first step; 322-second step; 33-rotating drive assembly. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", 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 position 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 present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] like Figure 1-5 As shown, the utility model discloses a sleeve structure of a rotary riveting machine, including a frame 10, and an outer sleeve 11, a lifting module 20 and a rotating module 30 arranged on the frame 10.

[0029] The lifting module 20 is provided with an inner sleeve 21 and a lifting drive assembly 22. The inner sleeve 21 can be slidably sleeved in the outer sleeve 11 up and down, and the lifting drive assembly 22 can drive the inner sleeve 21 to move up and down. Specifically, the lifting module 20 is also provided with a lifting frame 23. The lifting frame 23 is slidably connected to the frame 10 up and down. The inner sleeve 21 is arranged on the lifting frame 10, and the inner sleeve 21 can move up and down with the lifting frame 23. The lifting drive assembly 22 can use a cylinder or an oil cylinder.

[0030] The rotating module 30 can move up and down following the inner sleeve 21. The rotating module 30 is provided with a rivet head 31, a rotating shaft 32 and a rotating drive assembly 33. The rivet head 31 is provided with a pressure rod 311. The rotating drive assembly 33 is installed on the lifting frame 23. The rotating drive assembly 33 can be a motor or a rotating cylinder. Preferably, the rotating drive assembly 33 is a motor. The motor and the rotating shaft 32 can be directly connected or indirectly connected by a transmission mechanism. The rivet head 31 is arranged at the lower end of the rotating shaft 32. The rotating shaft 32 is inserted into the inner sleeve 21. The rotating drive assembly 33 can drive the rotating shaft 32 to rotate relative to the inner sleeve 21. The upper end of the inner sleeve 21 is provided with a first bearing 24, and the lower end of the inner sleeve 21 is provided with a second bearing 25. The rotating shaft 32 is rotatably connected with the first bearing 24 and the second bearing 25. The circumferential outer wall of the rotating shaft 32 is provided with a first step 321 and a second step 322. The first step 321 abuts against the inner ring of the first bearing 24, and the second step 322 abuts against the inner ring of the second bearing 25 to limit the up and down movement of the rotating shaft 32 relative to the inner sleeve 21.

[0031] A groove 111 which can be filled with grease is provided between the circumferential outer wall of the inner sleeve 21 and the circumferential inner wall of the outer sleeve 11. The grease in the groove 111 can flow out to the gap between the circumferential outer wall of the inner sleeve 21 and the circumferential inner wall of the outer sleeve 11. It should be pointed out that since the grease is in a paste-like state and has a high viscosity, the process of flowing out of the groove 111 is relatively slow, and thus the grease can remain in the groove 111 for a long time.

[0032] The groove 111 is arranged on the circumferential inner wall of the outer sleeve 11 . It is understandable that the groove 111 can also be arranged on the circumferential outer wall of the inner sleeve 21 . In addition, the circumferential outer wall of the inner sleeve 21 and the circumferential inner wall of the outer sleeve 11 can also be provided with the groove 111 .

[0033] The cross section of the groove 111 is arc-shaped; by adopting the groove 111 with an arc-shaped cross section, the inner wall of the groove 111 is formed with an arc surface, so that the grease in the groove 111 can flow downward along the arc surface and enter the gap between the inner sleeve 21 and the outer sleeve 11, which has the effect of automatically replenishing the grease.

[0034] The depth d of the groove 111 is 1.5 mm-5.0 mm, and preferably the depth d of the groove 111 is 3.0 mm. By adopting the groove 111 with a depth d of 1.5 mm-5.0 mm, the groove 111 can be filled with sufficient grease, and the service life is long without frequent filling.

[0035] The groove 111 is a spiral groove 111, and the spiral groove 111 extends spirally along the axial direction of the inner sleeve 21; by adopting the spiral groove 111, the grease can also flow obliquely downward along the spiral direction of the spiral groove 111, so that the grease can lubricate the inner sleeve 21 more fully and evenly, and the lubrication effect is better.

[0036] The upper end of the spiral groove 111 extends to the upper end surface of the outer sleeve 11 to form a first opening 112, and the lower end of the spiral groove 111 extends to the lower end surface of the outer sleeve 11 to form a second opening (not shown); by providing the first opening 112 and the second opening, it is convenient to fill grease into the spiral groove 111 from the first opening and / or the second opening, and it is also convenient to scrape out expired or impurity-containing grease in the spiral groove 111 from the first opening and / or the second opening, so as to facilitate maintenance.

[0037] The spiral groove 111 is a continuous spiral groove 111 , where the continuous spiral groove 111 means that the spiral groove 111 is connected from the beginning to the end without being disconnected in the middle.

[0038] It should be noted that the number of the spiral groove 111 of the present invention is single, and it should be understood that a plurality of spiral grooves 111 with the same spiral direction may also be provided, with a spacing between two adjacent spiral grooves 111.

[0039] The outer sleeve 11 is detachably mounted on the frame 10 by means of screws 13 . By adopting a detachable manner, the outer sleeve 11 can be removed from the frame 10 , so as to facilitate filling grease into the groove 111 or cleaning the grease in the groove 111 .

[0040] A connecting seat 12 is provided at the lower end of the frame 10, and a through hole is provided on the connecting seat 12 for the inner sleeve 21 to pass through. The outer sleeve 11 is detachably mounted on the connecting seat 12 by screws 13; the use of screws 13 makes it easy to assemble and disassemble the outer sleeve 11 and the connecting seat 12.

[0041] The connecting seat 12 is provided with a plurality of mounting holes distributed around the through hole, and the upper end of the outer sleeve 11 is provided with threaded holes 113 corresponding to the mounting holes one by one, and the screws 13 pass through the mounting holes and the connecting holes in sequence to make the inner sleeve 21 detachably connected to the connecting seat 12.

[0042] The lower surface of the connecting seat 12 is provided with a positioning groove connected to the through hole. During assembly, the upper end of the outer sleeve 11 is embedded in the positioning groove. By providing the positioning groove on the connecting seat 12, the outer sleeve 11 is positioned by the positioning groove during assembly, thereby improving assembly accuracy and efficiency.

[0043] In summary, the utility model provides a groove 111 that can be filled with grease between the circumferential outer wall of the inner sleeve 21 and the circumferential inner wall of the outer sleeve 11. The grease in the groove 111 can flow out to the gap between the circumferential outer wall of the inner sleeve 21 and the circumferential inner wall of the outer sleeve 11. The grease in the gap lubricates the inner sleeve 21 and the outer sleeve 11. Therefore, by using the groove 111 that can be filled with grease, during long-term use, the inner sleeve 21 and the outer sleeve 11 are not easily worn, and the gap between the inner sleeve 21 and the outer sleeve 11 is avoided from increasing, thereby ensuring that the inner sleeve 21 can move up and down stably.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical practice of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A sleeve structure of a rotary riveting machine, comprising a frame, an outer sleeve, a lifting module and a rotating module arranged on the frame, the lifting module is provided with an inner sleeve and a lifting drive assembly, the inner sleeve can be slidably sleeved in the outer sleeve up and down, the lifting drive assembly can drive the inner sleeve to move up and down, the rotating module can follow the inner sleeve to move up and down, the rotating module is provided with a rotary riveting head, a rotating shaft and a rotating drive assembly, the rotary riveting head is arranged at the lower end of the rotating shaft, the rotating shaft is inserted into the inner sleeve, the rotating drive assembly can drive the rotating shaft to rotate relative to the inner sleeve, and the characteristics are: A groove filled with grease is provided between the circumferential outer wall of the inner sleeve and the circumferential inner wall of the outer sleeve, and the grease in the groove can flow out to the gap between the circumferential outer wall of the inner sleeve and the circumferential inner wall of the outer sleeve.

2. The rotary riveting machine sleeve structure according to claim 1, characterized in that: The groove is arranged on the circumferential inner side wall of the outer sleeve.

3. The rotary riveting machine sleeve structure according to claim 1, characterized in that: The cross section of the groove is arranged in an arc shape.

4. The sleeve structure of the rotary riveting machine according to claim 1, characterized in that: The depth of the groove is 1.5 mm-5.0 mm.

5. The rotary riveting machine sleeve structure according to any one of claims 1 to 4, characterized in that: The groove is a spiral groove, and the spiral groove extends spirally along the axial direction of the inner sleeve.

6. The sleeve structure of the rotary riveting machine according to claim 5, characterized in that: The upper end of the spiral groove extends to the upper end surface of the outer sleeve to form an opening.

7. The rotary riveting machine sleeve structure according to claim 5, characterized in that: The spiral groove is a continuous spiral groove.

8. The rotary riveting machine sleeve structure according to claim 1, characterized in that: The outer sleeve is detachably mounted on the frame by screws.

9. The sleeve structure of the rotary riveting machine according to claim 8, characterized in that: A connecting seat is arranged at the lower end of the frame, a through hole is arranged on the connecting seat for the inner sleeve to pass through, and the outer sleeve is detachably mounted on the connecting seat by screws.

10. The rotary riveting machine sleeve structure according to claim 9, characterized in that: The lower surface of the connecting seat is provided with a positioning groove which is communicated with the through hole. During assembly, the upper end of the outer sleeve is embedded in the positioning groove.

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