A self-centering air shaft chuck

Abstract

The utility model discloses a self-centering pneumatic shaft chuck, and its technical solution includes: a sleeve and a limit seat, a limit seat is installed on one side of the sleeve, an inner column is installed on one side of the limit seat inside the sleeve, a positioning groove is provided on the outer surface of the sleeve, a positioning frame is installed at the position of the positioning groove inside the sleeve by screws, steel ball grooves are provided on both sides of the top of the positioning frame, steel balls are installed inside the steel ball grooves, an oil storage rubber bag is installed at the bottom of the positioning frame, an oil outlet pipe is installed inside the positioning frame, one end of the oil outlet pipe is connected to the inside of the steel ball groove, and the end of the oil outlet pipe is connected to the inside of the oil storage rubber bag. A self-centering pneumatic shaft chuck solves the problem that when the existing pneumatic shaft is installed in the material pipe, the friction between the material pipe and the pneumatic shaft is large, the removal and clamping of the material pipe is difficult, resulting in increased time spent on loading and unloading, reduces the time spent on loading and unloading of the material pipe, and thus facilitates the use of the pneumatic shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of air shafts, in particular to a self-centering air shaft chuck. Background Art

[0002] An air expansion shaft is a device used to wind or unwind coils. It uses the principle of air pressure to provide support and fastening for the roll. The air expansion shaft usually consists of a hollow metal shaft and two closed end covers. There are multiple air vents inside the shaft. When using the air expansion shaft, the shaft is inserted into the inner diameter of the coil and the air pressure is transmitted to the inside of the shaft through the air source. When the air pressure increases, the shaft will expand, so that the coil is tightly fixed on the shaft.

[0003] When the existing pneumatic shaft is installed on the material tube, the friction between the material tube and the pneumatic shaft is relatively large, and the removal and clamping of the material tube is difficult, resulting in increased time spent on loading and unloading. For this reason, we propose a self-centering pneumatic shaft chuck. Utility Model Content

[0004] The purpose of the utility model is to provide a self-centering pneumatic shaft chuck to facilitate the removal and clamping of a material pipe, so as to solve the problem that when the material pipe is installed, the friction between the material pipe and the pneumatic shaft is large, the removal and clamping of the material pipe is difficult, and the time spent on loading and unloading is increased.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-centering pneumatic shaft chuck, comprising a sleeve and a limit seat, wherein a limit seat is installed on one side of the sleeve, an inner column is installed on one side of the limit seat inside the sleeve, a positioning groove is provided on the outer surface of the sleeve, a positioning frame is installed at the position of the positioning groove inside the sleeve by screws, steel ball grooves are provided on both sides of the top of the positioning frame, and steel balls are installed inside the steel ball grooves.

[0006] Preferably, a chuck is sleeved on the outer surface of the sleeve, a movable plate is installed at the bottom of the chuck and located inside the sleeve, and a flexible airbag is installed at the gap between the movable plate and the inner column.

[0007] Preferably, an air intake pipe is installed on one side of the limiting seat near the top, and an exhaust pipe is installed on one side of the limiting seat near the bottom, and the air intake pipe and the exhaust pipe are plugged into the flexible airbag.

[0008] Preferably, a spring is installed at the gap between the shaft sleeve and the movable plate through a spring groove.

[0009] Preferably, a connecting column is provided at the bottom of the movable plate, a connecting groove is provided on the outer surface of the flexible airbag at the position of the connecting column, and the connecting column is clamped in the connecting groove.

[0010] Preferably, an oil storage rubber bag is installed at the bottom of the positioning frame, an oil outlet pipe is installed inside the positioning frame, one end of the oil outlet pipe is connected to the inside of the steel ball groove, the end of the oil outlet pipe is connected to the inside of the oil storage rubber bag, and a rubber boss is installed in the middle of the oil outlet pipe.

[0011] Preferably, an oil injector is installed in the middle of the positioning frame, and the end of the oil injector is connected to the oil storage rubber bag.

[0012] Preferably, there are sixteen positioning frames in total, and the sixteen positioning frames are equally divided into four groups, and the four groups of positioning frames are evenly distributed on the outer surface of the sleeve.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model achieves the effect of convenient removal and clamping of the material pipe by arranging a positioning frame, a steel ball and a steel ball groove. A limit seat is arranged on one side of the sleeve, an inner column is arranged inside the sleeve on one side of the limit seat, a positioning groove is arranged on the outer surface of the sleeve, a positioning frame is arranged inside the sleeve at the position of the positioning groove by screws, steel ball grooves are arranged on both sides of the top of the positioning frame, and steel balls are arranged inside the steel ball grooves, so as to solve the problem that when the existing pneumatic shaft is installed with a material pipe, the friction between the material pipe and the pneumatic shaft is large, the removal and clamping of the material pipe is difficult, and the time spent on loading and unloading of the material pipe is increased, and the time spent on loading and unloading of the material pipe is reduced, thereby facilitating the use of the pneumatic shaft.

[0015] 2. The utility model achieves the effect of lubricating the steel ball by arranging an oil storage rubber bag, an oil outlet pipe and an oil injection pipe. An oil storage rubber bag is arranged at the bottom of the positioning frame, an oil outlet pipe is arranged inside the positioning frame, one end of the oil outlet pipe is connected to the inside of the steel ball groove, and the end of the oil outlet pipe is connected to the inside of the oil storage rubber bag. A rubber boss is arranged in the middle of the oil outlet pipe to solve the problem that the existing steel balls have a large rotation assist force when in use, and need to be manually lubricated regularly, which makes the use of the air expansion shaft inconvenient. The lubrication effect of the air expansion shaft is guaranteed, thereby increasing the service life of the air expansion shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3 for Figure 2 The enlarged structural diagram of A;

[0019] Figure 4 It is a cross-sectional structural schematic diagram of the shaft sleeve and the positioning frame of the utility model;

[0020] Figure 5 for Figure 3 Schematic diagram of the enlarged structure of B.

[0021] Figure numerals: 1. sleeve; 2. chuck; 3. positioning frame; 4. limit seat; 5. exhaust pipe; 6. inner column; 7. flexible air bag; 8. intake pipe; 9. movable plate; 10. connecting column; 11. connecting groove; 12. spring; 13. oil storage rubber bag; 14. oil outlet pipe; 15. screw; 16. steel ball; 17. oiler; 18. steel ball groove; 19. positioning groove; 20. rubber boss. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Embodiment 1

[0024] like Figure 1 , Figure 4 and Figure 5 As shown, in order to achieve the above purpose, the utility model provides the following technical solutions: a self-centering gas expansion shaft chuck, including a sleeve 1 and a limit seat 4, the limit seat 4 is installed on one side of the sleeve 1, and an inner column 6 is installed on one side of the limit seat 4 inside the sleeve 1, and a positioning groove 19 is provided on the outer surface of the sleeve 1. A positioning frame 3 is installed at the position of the positioning groove 19 inside the sleeve 1 through a screw 15. There are a total of sixteen positioning frames 3, and the sixteen positioning frames 3 are equally divided into four groups. The four groups of positioning frames 3 are evenly distributed on the outer surface of the sleeve 1, and the top two sides of the positioning frames 3 A steel ball groove 18 is provided, and a steel ball 16 is installed inside the steel ball groove 18. An oil storage rubber bag 13 is installed at the bottom of the positioning frame 3. An oil outlet pipe 14 is installed inside the positioning frame 3. One end of the oil outlet pipe 14 is connected to the inside of the steel ball groove 18, and the end of the oil outlet pipe 14 is connected to the inside of the oil storage rubber bag 13. A rubber boss 20 is installed in the middle of the oil outlet pipe 14 to facilitate cutting off the oil outlet pipe 14. An oil injector 17 is installed in the middle of the positioning frame 3, and the end of the oil injector 17 is connected to the oil storage rubber bag 13 to facilitate oiling the inside of the oil storage rubber bag 13.

[0025] The working principle of a self-centering pneumatic shaft chuck based on Example 1 is: after the utility model is installed, before use, the material tube is sleeved on the outer surface of the sleeve 1, and the steel ball 16 is arranged to facilitate the lateral movement of the material tube. When the material tube is completely sleeved on the outer surface of the sleeve 1, the movable plate 9 can be driven to move laterally through the flexible air bag 7, thereby driving the chuck 2 to clamp the material tube, and at the same time, the oil storage rubber bag 13 is squeezed by the flexible air bag 7, and the lubricating oil inside the oil storage rubber bag 13 is transported to the steel ball groove 18 through the oil outlet pipe 14, and the steel ball 16 is lubricated by the lubricating oil. At this point, the working process of this equipment is completed.

[0026] Embodiment 2

[0027] like Figure 2and Figure 3 As shown, a self-centering pneumatic shaft chuck proposed by the utility model, compared with the first embodiment, this embodiment also includes: a chuck 2 is sleeved on the outer surface of the sleeve 1, a movable plate 9 is installed at the bottom of the chuck 2 inside the sleeve 1, a flexible air bag 7 is installed at the gap between the movable plate 9 and the inner column 6, an air intake pipe 8 is installed near the top on one side of the limiting seat 4, an exhaust pipe 5 is installed near the bottom on one side of the limiting seat 4, the air intake pipe 8 and the exhaust pipe 5 are plugged into the flexible air bag 7, a spring 12 is installed at the gap between the sleeve 1 and the movable plate 9 through a spring 12 groove, a connecting column 10 is provided at the bottom of the movable plate 9, the flexible air bag 7 is connected to the movable plate 9 by the set connecting column 10, a connecting groove 11 is provided on the outer surface of the flexible air bag 7 at the position of the connecting column 10, and the connecting column 10 is clamped in the connecting groove 11.

[0028] In this embodiment, when in use, gas is transported to the interior of the flexible airbag 7 through the air inlet pipe 8, thereby driving the flexible airbag 7 to expand, and the movable plate 9 is driven to move outward by the flexible airbag 7, and the chuck 2 is driven to move sideways by the movable plate 9, and the material tube on the outer surface of the sleeve 1 is fixed by the chuck 2, and the utility model can be used.

[0029] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A self-centering pneumatic shaft chuck, comprising a shaft sleeve (1) and a limit seat (4), characterized in that: A limiting seat (4) is installed on one side of the shaft sleeve (1); an inner column (6) is installed on one side of the limiting seat (4) inside the shaft sleeve (1); a positioning groove (19) is provided on the outer surface of the shaft sleeve (1); a positioning frame (3) is installed inside the shaft sleeve (1) at the position of the positioning groove (19) via a screw (15); steel ball grooves (18) are provided on both sides of the top of the positioning frame (3); and steel balls (16) are installed inside the steel ball grooves (18).

2. A self-centering air shaft chuck according to claim 1, characterized in that: The outer surface of the shaft sleeve (1) is sleeved with a chuck (2), the bottom of the chuck (2) is located inside the shaft sleeve (1) and a movable plate (9) is installed, and a flexible air bag (7) is installed at the gap between the movable plate (9) and the inner column (6).

3. The self-centering air shaft chuck according to claim 1, characterized in that: An air intake pipe (8) is installed near the top of one side of the limiting seat (4), and an exhaust pipe (5) is installed near the bottom of one side of the limiting seat (4). The air intake pipe (8) and the exhaust pipe (5) are plugged into the interior of the flexible airbag (7).

4. The self-centering air shaft chuck according to claim 1, characterized in that: A spring (12) is installed at the gap between the shaft sleeve (1) and the movable plate (9) via a spring groove.

5. The self-centering air shaft chuck according to claim 2, characterized in that: A connecting column (10) is provided at the bottom of the movable plate (9), a connecting groove (11) is provided on the outer surface of the flexible airbag (7) at the position of the connecting column (10), and the connecting column (10) is clamped inside the connecting groove (11).

6. The self-centering air shaft chuck according to claim 1, characterized in that: An oil storage rubber bag (13) is installed at the bottom of the positioning frame (3), an oil outlet pipe (14) is installed inside the positioning frame (3), one end of the oil outlet pipe (14) is connected to the inside of the steel ball groove (18), the end of the oil outlet pipe (14) is connected to the inside of the oil storage rubber bag (13), and a rubber boss (20) is installed in the middle of the oil outlet pipe (14).

7. The self-centering air shaft chuck according to claim 1, characterized in that: An oil injector (17) is installed in the middle of the positioning frame (3), and the end of the oil injector (17) is connected to the oil storage rubber bag (13).

8. The self-centering air shaft chuck according to claim 1, characterized in that: There are a total of sixteen positioning frames (3), and the sixteen positioning frames (3) are equally divided into four groups, and the four groups of positioning frames (3) are evenly distributed on the outer surface of the shaft sleeve (1).

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