Pneumatic screwing device

Abstract

The utility model discloses a pneumatic screwing device, which relates to the technical field of screwing equipment and comprises a base, a screwing mechanism mounted at the top of the base, a driving mechanism mounted at the top of the base and used for driving the screwing mechanism to lift, and a clamping mechanism mounted at the top of the base and used for clamping a pipe fitting to be screwed, the screwing mechanism comprises a movable seat movably arranged on the top of the base, a rotating air cylinder fixedly installed in the movable seat and a screwing head fixedly installed at the bottom end of the rotating air cylinder. The pneumatic screwing device is driven by the motor and matched with the threaded rod to rotate, parts such as the rotating air cylinder can be driven to ascend and descend, the screwing head can be driven to twist by matching with rotation of the rotating air cylinder, the nut can be screwed on a clamped automobile pipe fitting through the screwing head after the screwing head ascends and descends and rotates, pneumatic screwing is carried out, and compared with manual screwing, the pneumatic screwing device is more labor-saving and convenient to use, and the working efficiency is improved. And the consumption of human resources is reduced, and the installation and working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to screwing equipment technical field especially is involved in a kind of pneumatic screwing device. BACKGROUND

[0002] Automobile parts are each unit constituting automobile whole and a kind of product serving automobile, such as automobile air conditioner pipe, water pipe and fuel pipe and so on pipe fittings. Automobile pipe fittings need to screw the nut used for closing in the liquid inlet and liquid outlet of pipe fittings for the convenience of liquid adding and liquid discharging.

[0003] The patent with publication number CN110270963B discloses "a nut screwing device. Technical problem: provide a nut screwing device without manual screwing nut, high work efficiency, can save manpower. Technical scheme: a nut screwing device, including handle, first guide rod, first spring, motor, first bevel gear, lever, bearing, shaft, second bevel gear, first nut and so on. By starting motor rotation, motor rotation drives second bevel gear rotation through first bevel gear, second bevel gear rotation drives shaft rotation, thereby screwing the nut of rotation allocation, through the cooperation of second universal ball and first clamping groove, thereby fixing hollow extrusion disc, and then fixing first nut, avoiding loosening in the process of first nut rotation".

[0004] For the problem of "because the wrench needs to be rotated continuously to screw the nut, the hand is prone to ache after a long time, thereby affecting work efficiency, and manual screwing nut cannot be screwed in batches, which is troublesome and requires more manpower" proposed in the above file specification, another technical solution is proposed to solve the above technical problem. UTILITY MODEL CONTENT

[0005] The utility model aims at the shortcomings that the wrench needs to be rotated continuously to screw the nut, the hand is prone to ache after a long time, thereby affecting work efficiency, and more manpower is required, provides a pneumatic screwing device, and the specific technical scheme is as follows:

[0006] A pneumatic screwing device, comprising a base, a screwing mechanism mounted on the top of the base, a driving mechanism mounted on the top of the base and used to drive the screwing mechanism to lift, and a clamping mechanism mounted on the top of the base and used to clamp the pipe to be screwed, the screwing mechanism comprising a movable seat movably arranged on the top of the base, a rotary air cylinder fixedly installed in the movable seat, and a screwing head fixedly installed at the bottom end of the rotary air cylinder;

[0007] The clamping mechanism comprises two L-shaped plates symmetrically arranged on the top of the base for clamping the pipe to be screwed, two sliding plates respectively fixed on the bottom of the two L-shaped plates and slidingly connected in the base, and a tension spring fixed between the two sliding plates, and the base is provided with an air bag mechanism for pushing the sliding plates to the pipe to be screwed by inflation.

[0008] By driving the driving mechanism, the rotating cylinder and other components can be lifted, and the rotating cylinder can be rotated to drive the screwing head to rotate, so that the screwing head can screw the nut on the clamped automobile pipe after lifting and rotating, thereby achieving pneumatic screwing, which is more labor-saving and convenient than manual screwing.

[0009] Optionally, a fixed frame is fixed on one side of the top of the base, one side of the movable seat abuts against the inner wall of the fixed frame, the driving mechanism comprises a motor fixed on the top of the fixed frame, a threaded rod fixed on the bottom of the output end of the motor and rotationally connected in the fixed frame, the movable seat is threadedly connected to the outer wall of the threaded rod, and the top of the base is fixedly installed with a bearing, and the bottom end of the threaded rod is rotationally connected in the matching bearing.

[0010] By adopting the above technical scheme, the motor can drive the threaded rod to rotate after the motor is operated, and the movable seat, the rotating cylinder and the screwing head can be lifted and moved as a whole by limiting the movable seat by the fixed frame.

[0011] Optionally, a working groove is formed in the base, the sliding plate is movably arranged in the working groove, two limiting holes are formed in the top of the base and communicated with the working groove, the top end of the sliding plate is slidingly connected in the matching limiting hole, the limiting hole is located below the L-shaped plate, and a plurality of air guide holes are formed in the bottom end of the sliding plate and communicated with the working groove.

[0012] By adopting the above technical scheme, under the tension of the tension spring, the two L-shaped plates can preliminarily clamp the pipe to be screwed in the middle by limiting the sliding plate by the limiting hole.

[0013] Optionally, the air bag mechanism comprises a bellows fixed on the bottom of the movable seat, a fixed pipe fixed between the bottom of the bellows and the top of the base, and two folding air bags respectively fixed on both sides of the working groove for pushing the sliding plate, and a conduit is arranged between the fixed pipe and the folding air bag.

[0014] By adopting the above technical scheme, the bellows can be compressed and the air in the bellows can enter the folding air bag by moving the movable seat downward during the screwing process, so that the folding air bag is inflated, and the two inflated folding air bags can further clamp the pipe, thereby clamping and fixing the pipe to be screwed.

[0015] In summary, the utility model has at least one of the following beneficial effects:

[0016] 1. By motor drive, cooperation screw rod rotation, can drive rotating cylinder etc. Lifting, and cooperation rotating cylinder rotation can drive screw head twist, after lifting and rotating screw head can screw nut on the clamped automobile pipe fitting, to carry out pneumatic screwing, compared with manual screwing more labor-saving and convenient, and reduce the consumption of human resources, improve the installation and work efficiency.

[0017] 2. By the tension of the tension spring, cooperate with the limiting of the limiting hole, two L-shaped plates can be centered on the intermediate pipe to be screwed under tension, and cooperate with the downward movement of the movable seat in the screwing process, can compress the bellows and make the air in the bellows enter the folding air bag, to make the folding air bag inflate, two inflated folding air bags can further clamp the pipe, so as to clamp and fix the screwed pipe, the whole only needs a single motor drive, can complete the lifting of the screwing mechanism and the multiple processes of pipe clamping, convenient and practical. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of the utility model;

[0019] Figure 2 It is the internal schematic diagram of the overall structure of the utility model;

[0020] Figure 3 It is the Figure 2 A structure enlarged view of the utility model;

[0021] Figure 4 It is the L-shaped plate and sliding plate connection diagram of the utility model.

[0022] Reference signs: 1, base; 11, fixed frame; 12, working groove; 13, limiting hole; 2, movable seat; 21, rotating cylinder; 22, screw head; 3, motor; 31, screw rod; 32, bearing; 4, L-shaped plate; 41, sliding plate; 42, tension spring; 43, air guide hole; 5, bellows; 51, fixed tube; 52, folding air bag. DETAILED DESCRIPTION

[0023] The following will be combined with the Figures 1-4 The utility model is further explained in detail.

[0024] The utility model embodiment discloses a kind of pneumatic screwing devices, refer to Figures 1-2 , including base 1, screwing mechanism, drive mechanism and clamping mechanism, base 1 can support screwing mechanism and other structures.

[0025] Refer to Figures 1-2The screwing mechanism is composed of the movable seat 2 arranged on the top of the base 1, the rotary air cylinder 21 fixedly arranged in the movable seat 2, and the screw head 22 fixedly arranged at the bottom end of the rotary air cylinder 21. The movable seat 2 can support and fix the rotary air cylinder 21 and other components. The rotary air cylinder 21 can be driven by an external foot switch. The driving principle of the foot switch is a public technology, which will not be described here in detail. When the staff steps on the foot switch, the rotary air cylinder 21 is controlled to rotate, thereby driving the screw head 22 to rotate. The screw head 22 is matched with the nut of the automobile pipe.

[0026] With reference to Figures 1-2 A fixed frame 11 is fixedly arranged on one side of the top of the base 1. One side of the movable seat 2 is in abutment with the inner wall of the fixed frame 11. The base 1 can support and fix the fixed frame 11. The fixed frame 11 can limit the movable seat 2, so that the movable seat 2 can be lifted and cannot be rotated.

[0027] With reference to Figures 1-2 The driving mechanism includes the motor 3 fixedly arranged on the top of the fixed frame 11 and the threaded rod 31 fixedly arranged at the bottom of the output end of the motor 3 and rotationally connected in the fixed frame 11. The movable seat 2 is threadedly connected to the outer wall of the threaded rod 31. The motor 3 can be forward rotated and reverse rotated, which is a public technology and will not be described here in detail. When the motor 3 operates, the threaded rod 31 is driven to rotate. At this time, in cooperation with the limitation of the fixed frame 11 to the movable seat 2, the movable seat 2, the rotary air cylinder 21 and the screw head 22 are driven to move integrally. The screw head 22 that rotates and lifts can screw the nut into the automobile pipe.

[0028] With reference to Figures 1-2 A bearing 32 is fixedly arranged on the top of the base 1. The bottom end of the threaded rod 31 is rotationally connected in the matched bearing 32. The bearing 32 includes an inner ring and an outer ring. The inner ring and the outer ring rotate relative to each other. The outer ring of the bearing 32 is fixedly arranged on the top of the base 1. The bottom end of the threaded rod 31 is fixedly connected in the matched inner ring of the bearing 32. The inner ring and the outer ring of the bearing 32 rotate relative to each other, so that the threaded rod 31 is rotationally connected in the bearing 32. The bearing 32 can reduce the resistance and wear of the threaded rod 31 when rotating by rotating the inner ring.

[0029] With reference to Figures 2-4The clamping mechanism comprises two L-shaped plates 4 symmetrically arranged at the top of the base 1 for clamping the pipe to be screwed, two sliding plates 41 respectively fixed at the bottom of the two L-shaped plates 4 and slidingly connected in the base 1, and a tension spring 42 fixed between the two sliding plates 41, a working groove 12 is formed in the base 1, the sliding plates 41 are movably arranged in the working groove 12, two limiting holes 13 are formed in the top of the base 1 and communicated with the working groove 12, the top end of the sliding plate 41 is slidingly connected in the corresponding limiting hole 13, the limiting hole 13 is located below the L-shaped plate 4, the base 1 can support and accommodate the sliding plate 41 and other components through the working groove 12, the limiting hole 13 can limit the sliding plate 41, the two sliding plates 41 are facilitated to move horizontally, the sliding plate 41 can support the L-shaped plate 4, and the bottom end of the L-shaped plate 4 can cover the limiting hole 13, so that foreign matters in the outside are not easy to enter the inside of the working groove 12 through the limiting hole 13.

[0030] With reference to Figures 2-4 A plurality of air guide holes 43 are formed in the bottom end of the sliding plate 41 and communicated with the working groove 12, the air guide holes 43 can communicate the air in the working groove 12 when the sliding plate 41 slides, and under the tension of the tension spring 42, the sliding plate 41 is limited by the limiting hole 13, so that the two L-shaped plates 4 can preliminarily clamp the pipe to be screwed in the middle under the tension.

[0031] With reference to Figures 1-3 The base 1 is provided with an air bag mechanism for pushing the sliding plate 41 to the pipe to be screwed by inflation, the air bag mechanism comprises a bellows 5 fixed at the bottom of the movable seat 2, a fixed pipe 51 fixed between the bottom of the bellows 5 and the top of the base 1, and two folding air bags 52 respectively fixed at both sides of the working groove 12 for pushing the sliding plate 41, a conduit is arranged between the fixed pipe 51 and the folding air bag 52, the bottom end of the threaded rod 31 is located in the inside of the bellows 5 and the fixed pipe 51, the bellows 5 and the fixed pipe 51 can shield and protect the bottom end of the threaded rod 31, the fixed pipe 51 can connect between the bellows 5 and the base 1, the conduit can communicate the inside of the bellows 5, the fixed pipe 51 and the folding air bag 52, so as to facilitate the flow of gas, wherein one end of the folding air bag 52 after inflation abuts against the sliding plate 41, so as to push the sliding plate 41.

[0032] During the screwing process, the movable seat 2 slowly moves downward, so as to compress the bellows 5, and part of the air in the inside of the bellows 5 and the fixed pipe 51 enters the two folding air bags 52 through the conduit, so as to inflate the two folding air bags 52, the inflated two folding air bags 52 can push the sliding plate 41 to the pipe side, so as to further clamp the automobile pipe in the middle by the two L-shaped plates 4, and clamp and fix the pipe to be screwed.

[0033] The implementation principle of the pneumatic screwing device is:

[0034] In use, the worker can place the automobile part to be screwed between the two L-shaped plates 4, at which time the two L-shaped plates 4 will preliminarily clamp the pipe to be screwed under the pulling force of the tension spring 42;

[0035] Then the worker can control the motor 3 to reverse, and the motor 3 will drive the threaded rod 31 to rotate after operation, at which time, in cooperation with the limiting of the fixed frame 11 to the movable seat 2, the movable seat 2, the rotary cylinder 21 and the screwing head 22 can be driven to move up and down as a whole;

[0036] When the movable seat 2 is lowered, the bellows 5 will be compressed, and part of the air inside the bellows 5 and the fixed pipe 51 will enter the two folded air bags 52 through the conduit, so as to inflate the two folded air bags 52, and the inflated two folded air bags 52 can push the sliding plate 41 to the pipe side, so as to further clamp the automobile pipe in the middle by the two L-shaped plates 4, so as to clamp and fix the pipe to be screwed;

[0037] When the screwing head 22 slowly approaches the clamped pipe after being lowered, the worker can place the nut below the screwing head 22, and control the rotary cylinder 21 to rotate after stepping on the external foot switch, so as to drive the screwing head 22 to rotate, and the rotating and descending screwing head 22 can screw the nut into the automobile pipe, so as to complete the pneumatic screwing and nut installation, and improve the installation and work efficiency.

[0038] The above only describes preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pneumatic screwing device, comprising a base (1), a screwing mechanism installed on the top of the base (1), a driving mechanism installed on the top of the base (1) and used for driving the screwing mechanism to lift and fall, and a clamping mechanism installed on the top of the base (1) and used for clamping a pipe to be screwed, characterized in that: the screwing mechanism comprises a movable seat (2) movably arranged on the top of the base (1), a rotary air cylinder (21) fixedly installed in the movable seat (2), and a screwing head (22) fixedly installed at the bottom end of the rotary air cylinder (21); the clamping mechanism comprises two L-shaped plates (4) symmetrically arranged on the top of the base (1) and used for clamping the pipe to be screwed, two sliding plates (41) respectively fixedly arranged at the bottom of the two L-shaped plates (4) and slidably connected in the base (1), and a tension spring (42) fixedly arranged between the two sliding plates (41), and the base (1) is provided with an air bag mechanism used for pushing the sliding plates (41) to the pipe to be screwed by inflation. A fixed frame (11) is fixedly arranged on one side of the top of the base (1), and one side of the movable seat (2) abuts against the inner wall of the fixed frame (11). The driving mechanism comprises a motor (3) fixedly arranged on the top of the fixed frame (11), and a threaded rod (31) fixedly arranged at the bottom of the output end of the motor (3) and rotatably connected in the fixed frame (11), and the movable seat (2) is threadedly connected to the outer wall of the threaded rod (31).

2. A gas powered screwing device according to claim 1, characterized in that: A bearing (32) is fixedly arranged on the top of the base (1), and the bottom end of the threaded rod (31) is rotatably connected in the matched bearing (32).

3. A gas powered screwing device according to claim 2, characterized in that: A working groove (12) is formed in the base (1), and the sliding plate (41) is movably arranged in the working groove (12).

4. A gas powered screwing device according to claim 3, characterized in that: Two limiting holes (13) are formed in the top of the base (1) and communicated with the working groove (12), the top end of the sliding plate (41) is slidably connected in the matched limiting hole (13), and the limiting hole (13) is located below the L-shaped plate (4).

5. A gas powered screw driving device as defined in claim 1, wherein: A plurality of air guide holes (43) are formed in the bottom end of the sliding plate (41) and communicated with the working groove (12).

6. A gas powered screwing device according to claim 5, characterized in that: The air bag mechanism comprises a bellows (5) fixedly arranged at the bottom of the movable seat (2), a fixed pipe (51) fixedly arranged between the bottom of the bellows (5) and the top of the base (1), and two folded air bags (52) respectively fixedly arranged on both sides of the working groove (12) and used for pushing the sliding plate (41), and a conduit is arranged between the fixed pipe (51) and the folded air bag (52).

7. A gas powered screw driving device as defined in claim 6, wherein: ​ 8. A gas powered screwing device according to claim 7, characterized in that: ​

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