CN102729212A - Pneumatic cylinder valve loading and unloading machine - Google Patents

Abstract

The invention mainly discloses a pneumatic bottle valve loading and unloading machine, which includes a conveying frame, a gas cylinder clamping device, a bottle valve loading and unloading device, a fixture positioning device and an air circuit system; After the bottle enters the conveying frame, after manual adjustment to ensure that the bottle valve is aligned with the bottle valve loading and unloading device installed on the fixture positioning device, the gas cylinder is clamped by the gas cylinder clamping device, and the gas cylinder is loaded and unloaded by the bottle valve loading and unloading device; The bottle clamping device and bottle valve loading and unloading device are pneumatically controlled by the air circuit system. The invention is driven by an air source, which is not only safe and reliable, but also has a long service life of the equipment, and the vertical and horizontal positions of the fixture are adjustable, and the positioning is convenient. The size can be applied to gas cylinders of various specifications, the rated output torque is adjustable, and the torque control accuracy is high. , When it is difficult to load and unload the valve, the output torque can be increased, and the application range is wider.

Description

A pneumatic bottle valve loading and unloading machine

technical field

The invention relates to the technical field of bottle valve loading and unloading equipment, in particular to a pneumatic bottle valve loading and unloading machine.

Background technique

Gas cylinders are pressure vessels used for compressed gas transportation. The quality of gas cylinders is directly related to people's personal and property safety. Therefore, relevant inspections must be carried out before leaving the factory and after a certain number of years of use. The cylinder valve on the gas cylinder needs to be unloaded or installed during the detection process. Therefore, cylinder valve loading and unloading is an important part of the production and inspection process of gas cylinders.

In the prior art, the bottle valve loading and unloading machines used in gas cylinder production inspection and related industries have the following deficiencies: 1. The bottle valve loading and unloading machines in the current technology are generally provided with a bottle valve loading and unloading machine driven by a geared motor on the top of the frame. Because the height of the reducer is fixed, the range of cylinder height applicable to this type of bottle valve loading and unloading machine is narrow, and because the output torque of the reducer is generally fixed and the torque is relatively large, it cannot be output according to the specifications of the cylinder valve. When assembling the cylinder valve of a small-sized gas cylinder, the large output torque can easily damage the cylinder valve. 2. Most of the bottle valve loading and unloading machines in the current technology are driven by electricity. The motor drives the clamping equipment to rotate to complete the operation of loading and unloading the valve. When the electric equipment is turned on or stopped, the current is easily overloaded, resulting in excessive torque peak value during the valve loading process. High, damage the valve, and at the same time accelerate the damage process of the coil or motor and other equipment, and even directly cause the equipment to burn out, affecting the service life of the bottle valve loading and unloading machine. Moreover, the valve equipment installed in the gas cylinder production and inspection line is used after the gas cylinder hydrostatic test, and the operator may carry water to operate the equipment, which is likely to cause safety hazards. 3. Due to reasons such as rust or chemical corrosion, the valves of used gas cylinders are prone to solidification. The cylinder valve loading and unloading machine in the current technology cannot increase the output torque during the valve unloading process, and it is easy to stop, which affects both production efficiency and It is easy to cause problems such as current overload. The market needs a new type of bottle valve loading and unloading machine, which not only needs to meet the basic conditions such as safety, reliability, and long life, but also needs to be suitable for bottle valves of various specifications in size, with adjustable output torque and high control accuracy. Increase the scope of application and improve the overall efficiency of production and inspection lines.

Contents of the invention

In view of the present situation of the above-mentioned bottle valve loading and unloading technology, especially for the shortcomings of the existing bottle valve loading and unloading machines, the present invention provides a new type of bottle valve loading and unloading equipment, especially a pneumatic bottle valve loading and unloading machine, which can not only avoid power equipment It is suitable for bottle valves of various specifications, the output torque is adjustable, and the control accuracy is high.

In order to achieve the above object, the present invention is achieved through the following technical solutions:

A pneumatic bottle valve loading and unloading machine, including a conveying frame, a gas cylinder clamping device, a bottle valve loading and unloading device, a fixture positioning device and an air circuit system; a gas cylinder clamping device is arranged above the conveying frame, and the gas cylinder enters the conveying frame Finally, after manual adjustment to ensure that the bottle valve is aligned with the bottle valve loading and unloading device installed on the fixture positioning device, the gas cylinder is clamped by the gas cylinder clamping device, and the cylinder valve is loaded and unloaded by the bottle valve loading and unloading device; the gas cylinder is clamped The device and bottle valve loading and unloading device are pneumatically controlled by the air circuit system.

The conveying frame adopts a horizontal structure, and the bottom is provided with rollers for cylinder conveying.

The gas cylinder clamping device includes a compression cylinder and a pressure head. The cylinder piston in the compression cylinder is equipped with a guide rod for positioning and connected to the pressure head. The pressure head adopts a downward "V" groove to compress and fix the gas cylinder. .

The bottle valve loading and unloading device includes a clamp, a coupling and an air motor, and the bidirectionally rotatable air motor is connected to the clamp through the coupling.

The clamp positioning device includes a worm gear mechanism, a dovetail chute and a motor bracket. The motor bracket is threadedly connected to the screw at the lower end of the worm wheel. The dovetail chute is installed on the motor bracket. The air motor is connected to the dovetail chute. Controlled by the hand wheel, the worm drives the worm wheel to rotate, causing the air motor and the fixture to rise or fall.

The air path system includes a triple piece, a pressure regulating valve, a clamping control valve, and a loading and unloading control valve; the air source is branched through the triple piece to form two air paths, one path is connected to control the air motor through the loading and unloading control valve, and the other path is through the clamping control valve. The tight control valve is connected to control the compression cylinder.

The two air passages are connected through a booster control valve.

A pressure regulating valve and a pressure gauge are respectively installed on the two air passages.

The clamping control valve and the loading and unloading control valve are jointly connected with a muffler.

The invention has the following advantages: driven by air source, not only is it safe and reliable, the equipment has a long service life, but also the vertical and horizontal positions of the fixture are adjustable, and the positioning is convenient. The precision is high, and the output torque can be increased when it is difficult to load and unload the valve, and the application range is wider.

Description of drawings

Fig. 1 is the schematic diagram of the gas path system of the preferred embodiment of the present invention;

Fig. 2 is the structural representation of preferred embodiment of the present invention;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is a schematic diagram of a fixture positioning device in a preferred embodiment of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described in further detail in conjunction with the accompanying drawings.

A pneumatic bottle valve loading and unloading machine mainly includes several major mechanisms, a conveying frame 1, a gas cylinder clamping device 2, a bottle valve loading and unloading device 3, a clamp positioning device 4 and an air circuit system 5. The gas cylinder is conveyed through the conveying frame 1, and is clamped by the gas cylinder clamping device 2 above the conveying frame 1. After clamping, the cylinder valve loading and unloading device 3 performs loading and unloading actions on the cylinder valve. Among them, the bottle valve loading and unloading device 3 can be adjusted longitudinally by the clamp positioning device 4 , and the gas cylinder clamping device 2 and the bottle valve loading and unloading device 3 are pneumatically controlled by the air circuit system 5 .

The conveying frame 1 adopts horizontal operation, and a roller 11 is arranged at the bottom. The roller 11 rotates to carry out gas cylinder transportation.

Cylinder clamping device 2 comprises compression cylinder 21 and pressure head 22, and the cylinder piston in compression cylinder 21 is equipped with guide rod 59, is used to prevent piston from rotating, and it is connected with pressure head 22 by screw thread, and the bottom of pressure head 22 The end face has a downward "V" groove, which is used to compress and fix the gas cylinder.

The bottle valve loading and unloading device 3 includes a clamp 31, a coupling 32 and an air motor 33. The air motor 33 is controlled by a loading and unloading control valve 54 and can rotate in both directions, one direction is for loading the valve, and the other direction is for unloading the valve.

The fixture positioning device 4 includes a worm and gear mechanism 41 , a dovetail chute 42 and a motor bracket 43 . The motor bracket 43 is threadedly connected with the screw at the lower end of the worm wheel 411 in the worm gear mechanism 41 . A dovetail chute 42 is installed on the motor bracket 43 , and the bottom of the air motor 33 is connected to the dovetail chute 42 , so that the air motor 33 can move on the dovetail chute 42 . The worm gear 411 and the worm screw 412 in the worm gear mechanism 41 cooperate with each other, the worm gear 412 drives the worm gear 411 to rotate, and the screw at the lower end of the worm gear 412 rotates to realize the longitudinal adjustment of the air motor 33 . In this embodiment, the rotation of the worm 412 is controlled by the hand wheel 6 connected to the rotating worm 412 .

The air system 5 includes a triple piece 51 , a clamping control valve 53 , and a loading and unloading control valve 54 . The external air source is branched through the triple piece 51 to form two air paths, one of which is connected to the control air motor 33 through the loading and unloading control valve 54 to control the two-way rotation of the air motor 33. The other way connects and controls the compression cylinder 21 through the clamping control valve 53, and is mainly responsible for controlling the pressure head 22 to compress the gas cylinder. A pressure regulating valve 55 and a pressure gauge 56 are all installed on each air circuit. Regulating the pressure regulating valve 55 can adjust the rated output torque of the air motor 33 and the output force of the compression cylinder 21, and display feedback in the form of pressure on the pressure gauge 56. By comparing with the calibrated pressure-output torque comparison table, it can be known The output torque of the device at this pressure. As the output pressure is certain, the output torque of the motor is determined and will not be overloaded, so the output torque accuracy of the device is high. In addition, a booster control valve 57 is connected in series between the two air circuits to form a bc section branch, which is responsible for increasing the output torque when it is difficult to unload the valve. Simultaneously, the clamping control valve 53 and the loading and unloading control valve 54 are jointly connected with a muffler 58 to eliminate the noise generated when the motor works.

When the present invention works, at first in conjunction with shown in Fig. 1, explain the loading and unloading process of pneumatic bottle valve according to the working principle of air pressure. Air pressure works by being able to implement three processes.

One is to realize the clamping process of the bottle body, the clamping control valve 53 is switched to the upper position, the compression cylinder 21 goes down, and the cylinder is clamped to prevent the cylinder itself from rotating when loading and unloading the valve; during this process, the loading and unloading control valve 54 is switched To the neutral position, the air motor 33 does not work.

The second is to realize the pneumatic valve loading process. The booster control valve 57 is switched to the lower position, the bc section branch of the booster pipeline is disconnected, the loading and unloading control valve 54 is switched to the lower position, and the air motor 33 is reversed to realize the assembly function of the bottle valve. The pressure regulating valve 55 on the corresponding gas path can steplessly adjust the maximum torque of the valve. The speed of the air motor 33 can also be adjusted by controlling the opening of the loading and unloading control valve 54 to ensure the stability of the valve loading process.

The third is to realize the pneumatic valve unloading process. The loading and unloading control valve 54 is switched to the upper position, and the air motor 33 rotates forward; Road bc section branch, make bigger air pressure drive motor 33, output bigger torque, realize the unloading function of bottle valve.

Below in conjunction with Fig. 2 and Fig. 3, the realization process of the present invention will be described by taking the loading and unloading process as an example. The adjusting fixture 31 is docked with the bottle valve. The clamping control valve 53 is switched to the upper position, and the pressure head 22 moves downward to clamp the bottle body. Switching the loading and unloading control valve 54 is in the upper position, and the air motor 33 rotates forward to realize the bottle valve unloading function; switching the booster control valve 57 to the upper position can effectively improve the unloading torque. In the same way, the loading and unloading control valve 54 is switched to the lower position, and the booster control valve 57 is switched to the lower position at the same time, and the air motor 33 is reversed to realize the bottle valve assembly function.

In the above embodiments, when loading and unloading gas cylinders with different valve diameters, it is necessary to adjust the longitudinal position of the clamp. In the worm gear mechanism 41 in Fig. 4, by rotating the hand wheel 6 in the forward direction (or in the reverse direction), the worm 412 is driven to rotate in the forward direction (or in the reverse direction), thereby driving the worm wheel 411 to rotate in the forward direction (or in the reverse direction). The screw rod on 412 also rotates accordingly, and the threaded rod and the air motor frame 43 are transmitted through a screw thread. Since the longitudinal position of the worm gear 412 remains unchanged, the motor bracket 43 is passively moved upward (or downward) to realize the longitudinal position adjustment function . When unloading (or installing) the bottle valve, the screw thread is screwed out (or screwed in) of the gas cylinder, and the lateral distance between the bottle valve and the bottle body changes relatively. For this reason, the dovetail groove 42 is designed as a moving pair, which can follow the bottle valve It changes with the change of the lateral distance from the bottle body.

The above-mentioned embodiments are only used to explain the inventive concept of the present invention, but not to limit the protection of the rights of the present invention. Any insubstantial changes made to the present invention by using this concept should fall within the scope of protection of the present invention.

Claims (9)

1. A pneumatic bottle valve loading and unloading machine, characterized in that: it comprises a conveying frame, a gas cylinder clamping device, a bottle valve loading and unloading device, a fixture positioning device and an air circuit system; a gas cylinder clamping device is arranged above the conveying frame, After the gas cylinder enters the conveying frame, after manual adjustment to ensure that the cylinder valve is aligned with the cylinder valve loading and unloading device installed on the fixture positioning device, the gas cylinder is clamped by the gas cylinder clamping device, and the cylinder valve is aligned by the cylinder valve loading and unloading device. Loading and unloading: the gas cylinder clamping device and the bottle valve loading and unloading device are controlled pneumatically by the gas circuit system. 2. A pneumatic cylinder valve loading and unloading machine as claimed in claim 1, characterized in that: the conveying frame adopts a horizontal structure, and the bottom is provided with rollers for cylinder conveying. 3. A pneumatic bottle valve loading and unloading machine as claimed in claim 1, characterized in that: said gas cylinder clamping device comprises a compression cylinder and a pressure head, and the cylinder piston in the compression cylinder is equipped with a guide rod for positioning and connecting Pressure head, the pressure head adopts a downward "V" groove to compress and fix the gas cylinder. 4. A pneumatic bottle valve loading and unloading machine according to claim 1, wherein the bottle valve loading and unloading device comprises a clamp, a coupling and an air motor, and the bidirectionally rotatable air motor is connected to the clamp through the coupling. 5. A pneumatic bottle valve loading and unloading machine according to claim 1, characterized in that: the fixture positioning device comprises a worm gear mechanism, a dovetail chute and a motor bracket, the motor bracket is threadedly connected to the screw at the lower end of the worm wheel, and the dovetail The air chute is installed on the motor bracket, the air motor is connected with the dovetail chute, the worm is controlled by rotating the hand wheel, and the worm drives the worm wheel to rotate. 6. A pneumatic bottle valve loading and unloading machine as claimed in claim 1, characterized in that: the air circuit system includes a triple piece, a pressure regulating valve, a clamping control valve, and a loading and unloading control valve; the air source passes through the triple piece The branches form two air paths, one path is connected to control the air motor through the loading and unloading control valve, and the other path is connected to control the compression cylinder through the clamping control valve. 7. A pneumatic bottle valve loading and unloading machine as claimed in claim 6, characterized in that: said two air circuits are connected through a booster control valve. 8. A pneumatic bottle valve loading and unloading machine as claimed in claim 6, characterized in that a pressure regulating valve and a pressure gauge are respectively installed on the two air circuits. 9. A pneumatic bottle valve loading and unloading machine according to claim 6, characterized in that: the clamping control valve and the loading and unloading control valve are jointly connected with a muffler.

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