Pneumatic turntable

Abstract

The pneumatic turntable comprises a base, a cover plate, a pneumatic slip ring and a workbench rotating shaft, the pneumatic slip ring comprises a central spindle located in the center, an air cylinder is fixed to the side edge of the base, a piston rod of the air cylinder is inserted into the base and then connected with a rack, and the upper portion of the central spindle penetrates through the cover plate. The workbench rotating shaft is fixedly connected to the outer surface of the upper portion of the core shaft and located above the cover plate, a gear ring is fixed to the position, below the workbench rotating shaft, of the outer surface of the core shaft, and the gear ring is meshed with the rack. The structure is simple in overall structure and not prone to winding.

Description

Technical Field

[0001] The utility model relates to the technical field of turntables, in particular to a pneumatic turntable. Background Art

[0002] Indexing plates are commonly used in machining equipment. The working principle of an indexing plate is to fix a flat circular disc on a shaft and enable it to rotate. The rotation of the indexing plate is achieved by a motor or other driving force.

[0003] However, the internal structure of the existing dividing plate is relatively complicated, which makes the operation relatively cumbersome. Moreover, since the workbench shaft needs to rotate, this will cause the air pipe to twist and be damaged, leading to the problem of entanglement. Therefore, the clamping device of the workpiece on the workbench shaft currently mostly adopts the structure of manual clamps. However, due to the structural limitations of the manual clamps, it is easy to cause unstable clamping, so the cabinet turntable structure needs to be improved. Utility Model Content

[0004] The purpose of the present utility model is to provide a pneumatic turntable to solve the problems of the existing turntables mentioned in the above background technology, such as the complicated structure and the easy entanglement of the air pipe.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pneumatic turntable, comprising a base, a cover plate, a pneumatic slip ring and a worktable shaft, the pneumatic slip ring comprising a core shaft located in the center, a cylinder fixed on the side of the base, a rack connected to the piston rod of the cylinder after being inserted into the base, the core shaft passes through the cover plate above, and the worktable shaft is fixedly connected to the outer surface of the upper part of the core shaft, the worktable shaft is located above the cover plate, and a gear ring is fixed on the outer surface of the core shaft relative to the bottom of the worktable shaft, and the gear ring is engaged with the rack.

[0006] Preferably, the pneumatic slip ring further comprises a jacket, a cavity is formed between the jacket and the core shaft, the jacket is fixed to the bottom of the base, an air pipe is provided at the bottom of the jacket, and a cylinder air pipe is provided above the core shaft.

[0007] Preferably, in order to limit the rotation angle, two limit rods are arranged at intervals on the sides of the base, a silicone strip is fixed at the end of each limit rod, and a limit assembly is also fixed outside the core shaft. The limit assembly includes a left limit frame and a right limit frame, and the left limit frame and the right limit frame are locked by more than one fixing screw. The left limit frame is provided with a left limit notch for cooperating with one of the silicone strips to limit the workbench shaft, and the right limit frame is provided with a right limit notch for cooperating with the other silicone strip to limit the workbench shaft.

[0008] Preferably, in order to facilitate installation and later disassembly, a T-shaped slot is provided on one side of the rack, the top and one side of the T-shaped slot are open, and a T-shaped insert is fixed on the piston rod of the cylinder, and the T-shaped insert is inserted into the T-shaped slot from top to bottom.

[0009] Preferably, for easy assembly, the base includes a side cover and a bottom cover, the side cover and the bottom cover are fixedly connected by one or more locking screws, and the outer cover partially exposes the bottom cover.

[0010] Preferably, to facilitate assembly, the side cover and the cover plate are fixedly connected by one or more locking screws.

[0011] In order to avoid positional deviation during the movement, a guide rail is further provided in the side cover body, and two sliders are slidably connected to the guide rail, and the sliders are fixed on the rack.

[0012] Compared with the prior art, the utility model has the following beneficial effects: since a pneumatic slip ring 3 is added to the turntable, the problem of tangling of the air pipe is avoided. At the same time, the structure as a whole adopts a cylinder to drive the rack to move horizontally, the rack synchronously drives the gear ring to rotate, and the gear ring drives the core shaft to rotate synchronously and drives the workbench shaft to rotate. The overall structure is simpler, the operation is more convenient, and there are relatively fewer internal components. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front structural schematic diagram of a pneumatic turntable in Example 1;

[0014] Figure 2 This is a schematic diagram of the back structure of a pneumatic turntable in Example 1;

[0015] Figure 3 This is a schematic structural diagram of a pneumatic turntable in Example 1 without an installed cover plate;

[0016] Figure 4 This is an exploded view of a pneumatic turntable in Example 1;

[0017] Figure 5 This is a schematic structural diagram of the combination of the cylinder, gear ring, rack, and pneumatic slip ring in Example 1;

[0018] Figure 6 for Figure 5 Schematic diagram of the structure in another direction.

[0019] In the figure: base 1, side cover 101, bottom cover 102, locking screw 2 103, locking screw 1 104, guide rail 105, slider 106, cover plate 2, pneumatic slip ring 3, core shaft 301, sleeve 302, workbench shaft 4, cylinder 5, rack 6, gear ring 7, air supply pipe 8, cylinder air guide pipe 9, limit push rod 10, silicone strip 11, limit assembly 12, left limit frame 121, right limit frame 122, left limit notch 1211, right limit notch 1221, fixing screw 13, T-slot 14, T-strip 15. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1

[0022] See also Figures 1-6 As shown, a pneumatic turntable provided in this embodiment includes a base 1, a cover plate 2, a pneumatic slip ring 3 and a workbench shaft 4, the pneumatic slip ring 3 includes a core shaft 301 located in the center, a cylinder 5 is fixed on the side of the base 1, and a rack 6 is connected after the piston rod of the cylinder 5 is inserted into the base 1, the core shaft 301 passes through the cover plate 2 above, and the workbench shaft 4 is fixedly connected to the outer surface of the upper part of the core shaft 301, the workbench shaft 4 is located above the cover plate 2, and a gear ring 7 is fixed on the outer surface of the core shaft 301 below the workbench shaft 4, and the gear ring 7 is engaged with the rack 6.

[0023] Preferably, the pneumatic slip ring 3 further comprises a sleeve 302, a cavity is formed between the sleeve 302 and the core shaft 301, the sleeve 302 is fixed to the bottom of the base 1, an air pipe 8 is provided at the bottom of the sleeve 302, and a cylinder air guide pipe 9 is provided above the core shaft 301, the pneumatic slip ring 3 further comprises two bearings distributed between the core shaft 301 and the sleeve 302, the bearings are clamped on the upper and lower inner walls of the base 1, and the core shaft 301 is fixedly connected to the inner wall of the bearing, the core shaft 301 and the base 1 are rotatably connected through the bearing, the air pipe 8 of the sleeve 302 is connected to the cavity, the outer surface of the core shaft 301 is provided with a groove facing the position of the air pipe 8, a vent is provided inside the core shaft 301, the groove is connected to the vent, and the vent is on The end is provided with the cylinder air guide pipe 9, which is connected to the external cylinder. The compressed gas enters the air guide pipe 8 on the outer sleeve 302 through the air guide pipe 8, and then enters the air hole on the core shaft 301 through the groove, and then the compressed gas is transported to the cylinder air guide pipe and added to the cylinder. During operation, when the external driving motor drives the workbench to rotate through the workbench shaft 4, the workbench shaft 4 drives the core shaft 301 to rotate due to the presence of the bearing, and then the air guide pipe 8 will not rotate when the workbench rotates, thereby avoiding the problem of air pipe entanglement. It should be noted that the pneumatic slip ring 3 is a component that can be purchased as a finished product. The above-mentioned internal structure of the pneumatic slip ring 3 belongs to the conventional technology in the field of pneumatic slip ring 3, so it will not be described in detail.

[0024] Preferably, in order to limit the rotation angle, two limiting push rods 10 are arranged at intervals on the sides of the base 1, and a silicone strip 11 is fixed at the end of each limiting push rod 10. A limiting component 12 is also fixed outside the core shaft 301, and the limiting component 12 includes a left limiting frame 121 and a right limiting frame 122. The left limiting frame 121 and the right limiting frame 122 are locked by one or more fixing screws 13. A left limiting notch 1211 is provided on the left limiting frame 121 for limiting the workbench shaft 4 after cooperating with one of the silicone strips 11, and a right limiting notch 1221 is provided on the right limiting frame 122 for limiting the workbench shaft 4 after cooperating with the other silicone strip 11. In this embodiment, two limiting push rods 10 are arranged to be distributed on the left and right to achieve the limiting effect on the rotation position of the workbench shaft 4.

[0025] Preferably, in order to facilitate installation and later disassembly, a T-shaped slot 14 is provided on one side of the rack 6, and the top and one side of the T-shaped slot 14 are open. A T-shaped insert 15 is fixed to the piston rod of the cylinder 5, and the T-shaped insert 15 is inserted into the T-shaped slot 14 from top to bottom. In this embodiment, the rack 6 and the piston rod of the cylinder 5 are fixed by plugging from top to bottom, which is convenient for installation and disassembly. Preferably, for easy assembly, the base 1 includes a side cover 101 and a bottom cover 102, and the side cover 101 and the bottom cover 102 are fixedly connected by one or more locking screws 103. The outer sleeve 302 partially exposes the bottom cover 102, and the side cover 101 and the cover plate 2 are fixedly connected by one or more locking screws 104. By removing the corresponding screws later, the bottom cover 102, the side cover 101 and the cover plate 2 can be disassembled separately.

[0026] In order to avoid positional displacement during movement, a guide rail 105 is further provided in the side cover 101, and two sliders 106 are slidably connected to the guide rail 105, and the sliders 106 are fixed on the rack 6. In this embodiment, two sliders 106 are provided on the back of the rack 6, and then a guide rail 105 is provided in the side cover 101 to facilitate the movement of the sliders 106. During operation, when the rack 6 moves horizontally driven by the cylinder, the sliders 106 move along the guide rail 105 to avoid the problem of positional displacement during the movement of the rack 6.

[0027] The specific working principle of this structure is as follows: Since a pneumatic slip ring 3 is added to the turntable, and the internal structure of the pneumatic slip ring 3 is matched with the internal structure of the pneumatic slip ring 3, the air is taken in by the air pipe 8, and the cylinder air guide pipe 9 is connected to the cylinder. After the upper air pipe rotates, it will not drive the lower air pipe 8 to rotate and cause the air pipe to become tangled. At the same time, the structure as a whole adopts the cylinder to drive the rack to move horizontally, and the rack synchronously drives the gear ring to rotate. The gear ring drives the core shaft 301 to rotate and synchronously drives the workbench shaft 4 to rotate. The overall structure is simpler, the operation is more convenient, and the internal components are relatively small. At the same time, the use of a cylinder to drive the workbench shaft 4 to rotate has lower cost and greater torque than the motor. The use of a cylinder has better waterproof performance and service life than the motor.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A pneumatic turntable, comprising a base (1), a cover plate (2), a pneumatic slip ring (3) and a worktable rotating shaft (4), wherein the pneumatic slip ring (3) comprises a core shaft (301) located at the center, and is characterized in that: A cylinder (5) is fixed on the side of the base (1), and a rack (6) is connected to the piston rod of the cylinder (5) after being inserted into the base (1). The core shaft (301) passes through the cover plate (2), and the workbench shaft (4) is fixedly connected to the outer surface of the upper part of the core shaft (301). The workbench shaft (4) is located above the cover plate (2). A gear ring (7) is fixed on the outer surface of the core shaft (301) below the workbench shaft (4), and the gear ring (7) is meshed with the rack (6).

2. A pneumatic turntable according to claim 1, characterized in that: The pneumatic slip ring (3) further comprises an outer sleeve (302), a cavity is formed between the outer sleeve (302) and the core shaft (301), the outer sleeve (302) is fixed to the bottom of the base (1), an air supply pipe (8) is arranged at the bottom of the outer sleeve (302), and a cylinder air guide pipe (9) is arranged above the core shaft (301).

3. A pneumatic turntable according to claim 2, characterized in that: Two limiting push rods (10) are arranged at intervals on the side of the base (1), and a silicone strip (11) is fixed at the end of each limiting push rod (10). A limiting assembly (12) is also fixed outside the core shaft (301), and the limiting assembly (12) includes a left limiting frame (121) and a right limiting frame (122). The left limiting frame (121) and the right limiting frame (122) are locked by one or more fixing screws (13). The left limiting frame (121) is provided with a left limiting notch (1211) for limiting the workbench rotating shaft (4) after cooperating with one of the silicone strips (11), and the right limiting notch (1221) is provided on the right limiting frame (122) for limiting the workbench rotating shaft (4) after cooperating with the other silicone strip (11).

4. A pneumatic turntable according to claim 3, characterized in that: A T-shaped slot (14) is provided on one side of the rack (6), the top and one side of the T-shaped slot (14) are both open, a T-shaped inserting strip (15) is fixed on the piston rod of the cylinder (5), and the T-shaped inserting strip (15) is inserted into the T-shaped slot (14) from top to bottom.

5. The pneumatic turntable according to claim 4, characterized in that: The base (1) comprises a side cover (101) and a bottom cover (102), the side cover (101) and the bottom cover (102) are fixedly connected via one or more locking screws (103), and the outer cover (302) partially exposes the bottom cover (102).

6. The pneumatic turntable according to claim 5, characterized in that: The side cover body (101) and the cover plate (2) are fixedly connected via one or more locking screws (104).

7. The pneumatic turntable according to claim 6, characterized in that: A guide rail (105) is also provided in the side cover (101), and two sliders (106) are slidably connected to the guide rail (105), and the sliders (106) are fixed on the rack (6).

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