Double-gas-path control structure of double-station inflatable chuck

Abstract

The utility model provides a double-gas-path control structure of a double-station inflatable chuck, and belongs to the technical field of industrial production. Each chuck clamping assembly is connected with an air inlet path and an air return path, two air outlet ends of the air inlet path are connected with air inlets of the two inflatable chucks respectively, and two air inlet ports of the air return path are connected with air outlets of the two inflatable chucks respectively. The air inlet end of the air inlet path and the air outlet end of the air return path are connected with the main air path through a five-opening three-position middle sealing electromagnetic valve; the main gas path is divided into two branch gas paths, and the two branch gas paths are in one-to-one correspondence with the two chuck clamping assemblies; the five-opening three-position middle-sealing solenoid valves are installed at the tail ends of the corresponding branch gas paths, and each branch gas path is provided with a one-way valve. According to the utility model, the phenomenon that the chuck and the charging barrel retract and are stuck in the prior art is solved, an air path is optimized, and the device is safe, practical and easy to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial production, and particularly relates to a dual-airway control structure for a dual-station air-expansion chuck. Background Art

[0002] Generally, the chuck control is single-airway control. There is only control when the chuck expansion piece is tightened, and the retraction of the chuck expansion piece relies on the spring retraction. After long-term use, the wedge chuck will cause the spring to be not easy to retract. When the chuck needs to leave the cartridge, it is still in the tightened state, which will cause the phenomenon that the chuck drives the cartridge to retract, and there are certain safety hazards. Content of the Utility Model

[0003] In view of this, the utility model provides a dual-airway control structure for a dual-station air-expansion chuck. It uses dual airways to control the tightening and retraction of the chuck, which will no longer cause the phenomenon of retraction jamming of the chuck, and ensures the safety of clamping and loosening between the chuck and the cartridge.

[0004] The utility model adopts the following technical solutions to achieve the above technical effects:

[0005] A dual-airway control structure for a dual-station air-expansion chuck includes two groups of chuck clamping assemblies, and each group of chuck clamping assemblies includes two air-expansion chucks;

[0006] Each group of chuck clamping assemblies is connected to an air inlet passage and an air return passage. The two outlet ends of the air inlet passage are respectively connected to the air inlet ports of the two air-expansion chucks, and the two inlet ports of the air return passage are respectively connected to the air outlet ports of the two air-expansion chucks;

[0007] The air inlet end of the air inlet passage and the air outlet end of the air return passage are both connected to the main air passage through a five-port three-position center-sealing solenoid valve;

[0008] The main air passage is divided into two branch air passages, and the two groups of branch air passages correspond to the two groups of chuck clamping assemblies one by one; the five-port three-position center-sealing solenoid valve is installed at the end of the corresponding branch air passage, and a check valve is provided on each branch air passage;

[0009] A digital display pressure switch and a vacuum filter are further provided on the air inlet passage, wherein the digital display pressure switch is used to display and detect the tightening condition of the air-expansion chuck in real time, and the vacuum filter filters impurities in the gas.

[0010] Furthermore, the chuck clamping assembly includes a mandrel and a pneumatic rotary joint. The air-expansion chuck is installed at the front end of the mandrel, and the pneumatic rotary joint is installed at the rear end of the mandrel; corresponding air inlet channels and air return channels are provided inside the mandrel; the air inlet passage and the air return passage are connected to the corresponding air inlet channels and air return channels through the pneumatic rotary joint.

[0011] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0012] This patent solves the problems of the previous phenomenon of the chuck and the barrel retracting stuck, the phenomenon of the chuck and the barrel slipping, the phenomenon of air leakage at the working position of the AB axis, adds real-time detection and safety alarm for the air circuit, optimizes the air circuit, and is safe, practical and easy to operate. Brief Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the air circuit structure of an embodiment of the present utility model;

[0014] Figure 2 It is a schematic diagram of the chuck structure of an embodiment of the present utility model. Detailed Embodiment

[0015] Next, the present utility model will be further described in conjunction with the drawings.

[0016] A dual-air-circuit control structure of a double-station air-expansion chuck includes two groups of chuck clamping assemblies, and each group of chuck clamping assemblies includes two air-expansion chucks;

[0017] Each group of chuck clamping assemblies is connected to an air inlet circuit and an air return circuit. Among them, the two air outlet ends of the air inlet circuit are respectively connected to the air inlet ports of the two air-expansion chucks, and the two air inlet ports of the air return circuit are respectively connected to the air outlet ports of the two air-expansion chucks;

[0018] The air inlet end of the air inlet circuit and the air outlet end of the air return circuit are both connected to the main air circuit through a five-port three-position center-sealing solenoid valve;

[0019] The main air circuit is divided into two sub-air circuits, and the two sub-air circuits correspond to the two groups of chuck clamping assemblies one by one; the five-port three-position center-sealing solenoid valve is installed at the end of the corresponding sub-air circuit, and a check valve is provided on each sub-air circuit;

[0020] A digital display pressure switch and a vacuum filter are also provided on the air inlet circuit. Among them, the digital display pressure switch is used to display and detect the tightening condition of the air-expansion chuck in real time, and the vacuum filter filters impurities in the gas.

[0021] Furthermore, the chuck clamping assembly includes a mandrel and a pneumatic rotary joint. The air-expansion chuck is installed at the front end of the mandrel, and the pneumatic rotary joint is installed at the rear end of the mandrel; corresponding air inlet channels and air return channels are provided inside the mandrel; the air inlet circuit and the air return circuit are connected to the corresponding air inlet channels and air return channels through the pneumatic rotary joint.

[0022] This embodiment includes a dual-air-circuit control component and a chuck clamping component, and the dual-air-circuit control component is used to control the chuck clamping component.

[0023] For the described dual-airway control component, the boosting valve 1 is used to increase the tightening force between the chuck 7 and the cartridge. The normal plant air pressure is between 0.5 - 0.6 Mpa. If the operating speed is too fast, relative friction will occur between the chuck 7 and the cartridge. After adding the boosting valve 1, the phenomenon of relative friction and slipping can be avoided. The one-way valve 2 is used to prevent the airways of Station A and Station B from interfering with each other. When Station A is working, if there is an airway action at Station B, it will affect the pneumatic clamping force at Station A. To avoid the mutual interference of the airways, a one-way valve is specially added to solve this problem. The five-port three-position center-sealing solenoid valve 3 is used to control the inflation and retraction of the chuck 7 respectively. In the past, the chuck only had control for inflation, and the retraction relied on the spring to retract automatically. Now, a control for the retraction airway is specially added to prevent retraction jamming. The function of the center-sealing solenoid valve is that in case of a sudden air shortage, the air can be sealed in the airway after the solenoid valve, preventing the chuck from retracting due to no air in the airway when there is a sudden air shortage, ensuring safety.

[0024] The digital display pressure switch 4 is installed in the intake airway, which can display and detect the tightening situation between the chuck 7 and the cartridge in real time. If the air pressure drops, the digital display pressure switch 4 will give an alarm. The vacuum filter 5 is installed in the intake airway, which can filter impurities in the gas to prevent damage to the pneumatic rotary joint 6 and the chuck 7. Compressed gas enters the pneumatic rotary joint 6 through the intake airway, and then enters the chuck 7. Inside the chuck 7, piston movement occurs to realize the inflation of the expansion piece on the chuck 7. After the five-port three-position solenoid valve 3 is reversed, the return airway drives the piston inside the chuck 7 to move in the opposite direction, ensuring the retraction of the expansion piece, thus realizing the control of the dual-airway of the chuck 7.

[0025] For the described chuck clamping component, the chuck 7 is installed at the front end of the mandrel 9, and the pneumatic rotary joint 6 is installed at the rear end of the mandrel 9. The pneumatic rotary joint 6 has an intake joint and a return joint, and corresponding intake holes and return holes are machined on the mandrel 9. The intake airway and the return airway enter the mandrel 9 through the pneumatic rotary joint 6, and then enter the chuck 7 to realize the clamping and loosening of the cartridge 8.

[0026] It should be understood that the above description of the specific embodiments of this patent is only an exemplary description listed for the convenience of those of ordinary skill in the art to understand the patent solution, and does not imply that the protection scope of this patent is only limited to these examples. Those of ordinary skill in the art can fully understand the patent technical solution and, without any creative labor, obtain more specific embodiments by combining technical features, replacing some technical features, adding more technical features, etc. to the examples listed in this patent. All these specific embodiments are within the scope covered by the claims of this patent. Therefore, these new specific embodiments should also be within the protection scope of this patent.

[0027] In addition, for the purpose of simplifying the description, this patent may not list some common specific implementation schemes that can be naturally conceived by those of ordinary skill in the art after understanding the technical solutions of this patent. Obviously, these schemes should also be included in the protection scope of this patent.

Claims

1. A double-position air expansion chuck dual-air circuit control structure, comprising two sets of chuck clamping components, characterized in that: Each set of chuck clamping assemblies includes two gas expansion chucks; Each set of chuck clamping components is connected to an air inlet and an air return path, wherein the two air outlet ends of the air inlet are respectively connected to the air inlets of the two air chucks, and the two air inlet ports of the air return are respectively connected to the air outlets of the two air chucks; The air inlet end of the air inlet circuit and the air outlet end of the air return circuit are both connected to the main air circuit through a five-port three-position center-sealed solenoid valve; The main gas circuit is divided into two sub-gas circuits, and the two sub-gas circuits correspond to the two-way chuck clamping components one by one; the five-port three-position center-sealing solenoid valve is installed at the end of the corresponding sub-gas circuit, and each sub-gas circuit is provided with a one-way valve; The air inlet path is also provided with a digital pressure switch and a vacuum filter, wherein the digital pressure switch is used to display and detect the tension of the air expansion chuck in real time, and the vacuum filter filters impurities in the gas.

2. A double-air-circuit control structure for a double-station air expansion chuck according to claim 1, characterized in that: The chuck clamping assembly includes a core shaft and a gas rotary joint, the gas expansion chuck is installed at the front end of the core shaft, and the gas rotary joint is installed at the rear end of the core shaft; corresponding air inlet channels and air return channels are provided inside the core shaft; the air inlet path and air return path are connected to the corresponding air inlet channel and air return channel through the gas rotary joint.

3. The double-air-circuit control structure of a double-station air expansion chuck according to claim 1, characterized in that: A boost valve is arranged on the main gas path.

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