Air passage structure for pneumatic chuck

Abstract

The utility model relates to the technical field of chucks, in particular to an air passage structure for a pneumatic chuck. Comprising a bearing outer cover, the bearing outer cover is provided with an air hole, and the air hole is used for air inlet and outlet; the bearing inner cover is connected with the bearing outer cover; the air channel is used for transmitting air, the corner of the air channel is vertical, and the air channel is used for reducing airflow resistance; the sleeve assembly is arranged on the inner side of the bearing inner cover; the air chamber is formed between the sleeve assembly and the bearing inner cover, and the air chamber is communicated with the air passage; and the chuck assembly is arranged in the air chamber, and the chuck assembly is connected with the sleeve assembly. The pneumatic chuck can reduce the airflow resistance in the air channel and improve the response speed of the pneumatic chuck.

Description

Technical Field

[0001] The utility model relates to the technical field of chucks, in particular to an airway structure for a pneumatic chuck. Background Art

[0002] As a clamping device widely used in the field of industrial automation, the main function of the pneumatic chuck is to drive the cylinder or air claw through compressed air to achieve fast and precise clamping of the workpiece. The working principle of the pneumatic chuck is based on aerodynamics and mechanical principles. When the air source is input into the air chamber through the air duct, the piston in the air chamber moves due to the air pressure, and the movement of the piston is connected to the clamping claw through a mechanical connecting rod, so that the clamping claw clamps or releases the workpiece. Specifically, when the air chamber is controlled by the air source, the piston starts to move, generates thrust, and transmits the air source pressure to the clamping claw to clamp the workpiece; when the air source control stops, the gas in the air chamber is released, the clamping claw loses the air source pressure, and the workpiece is released. By controlling the switch state of the air source and the design of the air chamber, continuous clamping and releasing can be achieved.

[0003] In the design of pneumatic chucks, the airway structure is one of the key factors affecting the performance of the pneumatic system. In the existing airway design, there are many corner settings, which not only increase the resistance of the airflow, but also cause uneven airflow speed, thus affecting the response speed and working efficiency of the pneumatic chuck. Utility Model Content

[0004] In order to reduce the airflow resistance in the airway and improve the response speed of the pneumatic chuck, the present application provides an airway structure for the pneumatic chuck.

[0005] In order to achieve the above purpose, this application adopts the following technical solutions:

[0006] An airway structure for a pneumatic chuck comprises: a bearing outer cover, the bearing outer cover is provided with air holes, the air holes are used for the air to enter and exit; a bearing inner cover, the bearing inner cover is connected to the bearing outer cover; an airway, the airway is used to transmit gas, the corner of the airway is vertical, and is used to reduce airflow resistance; a sleeve assembly, the sleeve assembly is arranged on the inner side of the bearing inner cover; an air chamber, the air chamber is formed between the sleeve assembly and the bearing inner cover, the air chamber is connected to the airway; a chuck assembly, the chuck assembly is arranged in the air chamber, and the chuck assembly is connected to the sleeve assembly.

[0007] By adopting the above device, the outer cover of the bearing is tightly connected with the inner cover of the bearing, and together they form the external frame of the airway. The airway is the main flow path of the gas. The corners of the airway are designed to be vertical, which can effectively reduce the resistance of the airflow during transmission, increase the flow rate and smoothness of the airflow, and thus improve the response speed and efficiency of the pneumatic system. At the same time, reducing the airflow resistance can reduce energy consumption, making the pneumatic chuck more energy-efficient and efficient during operation. The chuck assembly is located in the air chamber and is connected to the sleeve assembly. When working, the external air source enters the air chamber through the airway, and the movement of the chuck assembly is controlled by the change of the air pressure in the air chamber. The movement of the chuck assembly synchronously drives the sleeve assembly connected thereto to move, so as to realize the control of the action of the clamping claw, and then realize the clamping and release of the workpiece.

[0008] As a further description of the above technical solution:

[0009] There are multiple air passages, and both ends of the multiple air passages are connected with the air hole and the air chamber.

[0010] By adopting the above device, different air passages are responsible for air intake and exhaust respectively. When air is taken in, the gas enters the air passage through the air hole and passes into the air chamber; when air is exhausted, the gas in the air chamber is discharged through the air passage and the air hole, and the air intake and exhaust states are performed alternately to realize pneumatic control of the gripper.

[0011] As a further description of the above technical solution:

[0012] The chuck assembly comprises a fixed chuck and a movable chuck. The movable chuck is driven to move by air pressure. The fixed chuck is arranged between the movable chucks and does not move with changes in air pressure.

[0013] By adopting the above device, the movable chuck is driven to move by air pressure, and the clamping force can be accurately controlled to meet the clamping requirements of workpieces of different sizes and reduce damage to the workpieces. The fixed chuck does not move with the change of air pressure, which ensures the stability of the chuck assembly during the clamping process and reduces the displacement of the workpiece during the processing.

[0014] As a further description of the above technical solution:

[0015] A limiting member is arranged on one side of the bearing inner cover close to the air chamber, and the fixed chuck is arranged in the limiting member, and the position of the fixed chuck is fixed by the limiting member.

[0016] By adopting the above device, the setting of the limiter helps to reduce the accidental movement of the fixed chuck due to the change of air pressure, thereby improving the reliability of operation.

[0017] As a further description of the above technical solution:

[0018] The sleeve assembly includes a fixed sleeve and a movable sleeve. The movable sleeve is connected to a movable chuck. The movable sleeve is driven to move by the movable chuck to control the clamping jaws. A channel for the workpiece to pass through is formed in the fixed sleeve.

[0019] By adopting the above device, the movable sleeve is connected to the movable chuck, so that the movement of the movable chuck driven by air pressure can accurately control the opening and closing action of the clamping jaws, thereby improving the accuracy of clamping the workpiece. At the same time, the movement of the movable sleeve is synchronized with the movement of the movable chuck, ensuring the consistency of the action of the clamping jaws. A passage for the workpiece to pass through is formed in the fixed sleeve, which provides convenience for workpieces of special shapes and increases the applicability of the pneumatic chuck.

[0020] As a further description of the above technical solution:

[0021] The chuck assembly divides the air chamber into multiple parts, and different air chambers are connected to different air passages respectively.

[0022] By adopting the above device, different air chambers are connected to different air passages, which facilitates accurate control and adjustment of the airflow to adapt to different working conditions and requirements.

[0023] As a further description of the above technical solution:

[0024] A ventilation groove and a sealing groove are arranged in the bearing outer cover, the ventilation groove is connected with the air passage and the air hole, and a sealing member for increasing air tightness is arranged in the sealing groove.

[0025] By adopting the above device, multiple ventilation grooves and sealing grooves are provided, and the ventilation grooves and sealing grooves are arranged at intervals. Since the ventilation grooves and the bearing outer cover have the same shape, that is, annular, the circulation speed of the gas in the ventilation grooves will be reduced, effectively reducing the impact of the gas on the airway. The seal in the sealing groove can effectively increase the air tightness, reduce gas leakage, and ensure the stable operation of the pneumatic chuck.

[0026] As a further description of the above technical solution:

[0027] A sealing ring is arranged on the outside of the air passage, and the sealing ring is arranged at the connection between the inner bearing cover and the outer bearing cover, and the sealing ring is used to reduce the leakage of gas in the air passage.

[0028] By adopting the above device, the sealing ring can effectively reduce the leakage of gas in the airway, thereby improving the airtightness of the entire pneumatic system, so that less gas is wasted, the system can operate at lower energy consumption, and achieve energy saving and environmental protection.

[0029] This application has the following beneficial effects:

[0030] 1. In the present application, the outer cover of the bearing is tightly connected to the inner cover of the bearing, and together they constitute the external frame of the airway. The airway is the main flow path for the gas, and the corners of the airway are designed to be vertical, which can effectively reduce the resistance of the airflow during transmission, increase the flow rate and smoothness of the airflow, and thus improve the response speed and efficiency of the pneumatic system. At the same time, reducing the resistance of the airflow can reduce energy consumption, making the pneumatic chuck more energy-efficient and efficient during operation. The chuck assembly is located in the air chamber and is connected to the sleeve assembly. During operation, the external air source enters the air chamber through the airway, and the movement of the chuck assembly is controlled by the change of the air pressure in the air chamber, and the movement of the chuck assembly synchronously drives the sleeve assembly connected thereto to move, so as to control the movement of the clamping jaws, and then realize the clamping and release of the workpiece.

[0031] 2. In the present application, the movable sleeve is connected to the movable chuck so that the movement of the movable chuck driven by air pressure can accurately control the opening and closing of the clamping jaws, thereby improving the accuracy of clamping the workpiece. At the same time, the movement of the movable sleeve is synchronized with the movement of the movable chuck, thereby ensuring the consistency of the action of the clamping jaws. A passage for the workpiece to pass through is formed in the fixed sleeve, which provides convenience for workpieces of special shapes and increases the applicability of the pneumatic chuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the airway structure used for the pneumatic chuck according to the embodiment of the utility model;

[0033] Figure 2 It is a longitudinal cross-sectional view of the airway structure of the pneumatic chuck according to the embodiment of the utility model;

[0034] Figure 3 It is a transverse cross-sectional view of the airway structure of the pneumatic chuck according to the embodiment of the utility model;

[0035] Figure 4 yes Figure 2 A magnified view of part A;

[0036] Figure 5 yes Figure 3 A magnified view of part B;

[0037] Figure 6 yes Figure 2 Magnified view of part C.

[0038] Legend:

[0039] 1. Bearing outer cover; 11. Air hole; 111. First air hole; 112. Second air hole; 12. Vent groove; 13. Sealing groove; 14. Sealing member; 2. Bearing inner cover; 21. Limiting member; 3. Air channel; 31. First air channel; 32. Second air channel; 33. Third air channel; 34. Fourth air channel; 4. Sleeve assembly; 41. Fixed sleeve; 42. Movable sleeve; 421. First movable sleeve; 422. Second movable sleeve; 5. Air chamber; 51. First air chamber; 52. Second air chamber; 53. Third air chamber; 54. Fourth air chamber; 6. Chuck assembly; 61. Fixed chuck; 62. Movable chuck; 621. First movable chuck; 622. Second movable chuck; 7. Clamping jaw; 8. Sealing ring. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-6 This application is described in further detail.

[0041] Example:

[0042] An airway structure for a pneumatic chuck, such as Figure 1-2 As shown, it includes a bearing outer cover 1, a bearing inner cover 2, an air channel 3 and an air chamber 5. Among them, the bearing outer cover 1 is provided with two air holes 11 for gas in and out, which are a first air hole 111 and a second air hole 112, respectively. The first air hole 111 and the second air hole 112 are external air source interfaces of the air channel 3. The bearing outer cover 1 and the bearing inner cover 2 are closely connected, and together constitute the external frame of the air channel 3. The air channel 3 runs through the bearing outer cover 1 and the bearing inner cover 2, and the two ends of the air channel 3 are connected to the air holes 11 and the air chamber 5, and gas is input into the air chamber 5 through the air channel 3.

[0043] like Figure 4-5 As shown, a vent groove 12 and a sealing groove 13 are provided on the inner wall of the bearing outer cover 1, two vent grooves 12 are provided, three sealing grooves 13 are provided, and the vent grooves 12 and the sealing grooves 13 are arranged at intervals. The vent groove 12 is connected to the air hole 11 and is a flow channel for the gas. A sealing member 14 is provided in the sealing groove 13. The sealing member 14 is used to ensure that there is no leakage between the two vent grooves 12, thereby improving the air tightness of the bearing outer cover 1. In this embodiment, the sealing member 14 is selected as a rubber sealing ring.

[0044] like Figure 2-3 As shown, the gas flows in the air channel 3, and the corners of the air channel 3 are designed to be vertical, which reduces the resistance of the air flow at the corners, allowing the air flow to pass smoothly, thereby improving the uniformity of the air flow speed. In this embodiment, four air channels 3 are provided, namely the first air channel 31, the second air channel 32, the third air channel 33 and the fourth air channel 34. Among them, both ends of the four air channels 3 are connected to the ventilation groove 12 and the air chamber 5, which is convenient for more precise control of the work of the clamp 7.

[0045] like Figure 2-3 As shown, in this embodiment, a chuck assembly 6 is provided in the air chamber 5, and the chuck assembly 6 includes a fixed chuck 61 and a movable chuck 62. Among them, there are two movable chucks 62, namely a first movable chuck 621 and a second movable chuck 622, and the fixed chuck 61 is located between the first movable chuck 621 and the second movable chuck 622. During operation, the first movable chuck 621 and the second movable chuck 622 move under the action of gas pressure to achieve clamping and releasing of the workpiece. The fixed chuck 61 is not affected by the gas pressure and will not move with the change of gas pressure, so as to play a role of stable clamping.

[0046] In addition, if Figure 2 As shown, in order to limit the position of the fixed chuck 61, a limiting member 21 is installed on the side of the bearing inner cover 2 close to the air chamber 5, and the fixed chuck 61 is installed in the limiting member 21. The position of the fixed chuck 61 is fixed by the limiting member 21 to limit the movement of the fixed chuck 61 and ensure the stability of the fixed chuck 61 during operation.

[0047] like Figure 2-3 As shown, a sleeve assembly 4 is provided on the inner side of the bearing inner cover 2, and the sleeve assembly 4 includes a fixed sleeve 41 and a movable sleeve 42. The workpiece passes through the fixed sleeve 41, and the movable sleeve 42 is connected to the movable chuck 62, and the movable sleeve 42 is driven to move synchronously by the movable chuck 62. In addition, the movable sleeve 42 can be further divided into a first movable sleeve 421 and a second movable sleeve 422, the first movable sleeve 421 is connected to the first movable chuck 621, and the second movable sleeve 422 is connected to the second movable chuck 622.

[0048] During operation, under the change of air pressure, the first movable chuck 621 and the second movable chuck 622 respectively drive the first movable sleeve 421 and the second movable sleeve 422 to move synchronously, and then the movement of the first movable sleeve 421 and the second movable sleeve 422 is converted into the clamping and releasing action of the clamping jaw 7 through the connecting rod. The whole movement process is closely linked to achieve fast, accurate and stable clamping of the workpiece, thereby improving the continuity and response speed of the entire pneumatic chuck, and then improving the work efficiency.

[0049] like Figure 2-3 As shown, in this embodiment, the air chamber 5 is formed between the bearing inner cover 2 and the sleeve assembly 4, and the chuck assembly 6 divides the air chamber 5 into four, namely, the first air chamber 51, the second air chamber 52, the third air chamber 53 and the fourth air chamber 54. Different air passages 3 are connected to different air chambers 5 to control the inflow and outflow of gas in each air chamber 5 separately.

[0050] In addition, if Figure 2 and 6As shown, in order to ensure the airtightness of the airway 3, a sealing ring 8 is provided on the outer wall of the airway 3. The sealing ring 8 is installed at the connection between the bearing outer cover 1 and the bearing inner cover 2, and is tightly fitted on the contact surface of the bearing outer cover 1 and the bearing inner cover 2 to ensure that the gas in the airway 3 will not leak and the clamping force of the clamping jaws 7 is effective. In this embodiment, the material of the sealing ring 8 can be selected from high pressure resistant and wear resistant rubber or plastic materials to ensure that a good sealing effect can be maintained during long-term use.

[0051] Working principle: During operation, gas enters the ventilation groove 12 from the first air hole 111, and enters the first air chamber 51 and the third air chamber 53 through the first air channel 31 and the third air channel 33 respectively, so that the air pressure in the first air chamber 51 and the third air chamber 53 gradually increases, and the gas in the second air chamber 52 and the fourth air chamber 54 is discharged through the second air channel 32 and the fourth air channel 34, so that the air pressure in the second air chamber 52 and the fourth air chamber 54 gradually decreases, thereby driving the movable chuck 62 to move, and the movable chuck 62 synchronously drives the movable sleeve 42 to move when moving, so as to realize the clamping action of the connecting rod. On the contrary, the gas enters another vent groove 12 from the second air hole 112, and enters the second air chamber 52 and the fourth air chamber 54 through the second air channel 32 and the fourth air channel 34, respectively, so that the air pressure in the second air chamber 52 and the fourth air chamber 54 gradually increases, and the gas in the first air chamber 51 and the third air chamber 53 is discharged through the first air channel 31 and the third air channel 33, so that the air pressure in the first air chamber 51 and the third air chamber 53 gradually decreases, thereby driving the movable chuck 62 to move in the opposite direction, and the movable chuck 62 synchronously drives the movable sleeve 42 to move when moving, returns to the initial position, and the clamping jaw 7 releases the workpiece. The intake and exhaust states are alternately performed, so that the pneumatic chuck can complete the clamping and releasing operations of the workpiece more quickly and accurately, thereby improving work efficiency.

[0052] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An airway structure for a pneumatic chuck, characterized in that: include: A bearing outer cover (1), wherein the bearing outer cover (1) is provided with an air hole (11), and the air hole (11) is used for the inlet and outlet of gas; A bearing inner cover (2), wherein the bearing inner cover (2) is connected to the bearing outer cover (1); An airway (3), the airway (3) being used to transmit gas, the corner of the airway (3) being vertical so as to reduce airflow resistance; A sleeve assembly (4), wherein the sleeve assembly (4) is arranged on the inner side of the bearing inner cover (2); An air chamber (5), the air chamber (5) being formed between the sleeve assembly (4) and the bearing inner cover (2), the air chamber (5) being in communication with the air passage (3); A chuck assembly (6), wherein the chuck assembly (6) is arranged in the air chamber (5), and the chuck assembly (6) is connected to the sleeve assembly (4).

2. The airway structure for a pneumatic chuck according to claim 1, characterized in that: The air passages (3) are provided in plurality, and both ends of the plurality of air passages (3) are connected to the air holes (11) and the air chambers (5).

3. The airway structure for a pneumatic chuck according to claim 1, characterized in that: The chuck assembly (6) comprises a fixed chuck (61) and a movable chuck (62), wherein the movable chuck (62) is driven to move by air pressure, the fixed chuck (61) is arranged between the movable chucks (62), and the fixed chuck (61) does not move with changes in air pressure.

4. The airway structure for a pneumatic chuck according to claim 3, characterized in that: A limiting member (21) is provided on a side of the bearing inner cover (2) close to the air chamber (5), and the fixed chuck (61) is provided in the limiting member (21), and the position of the fixed chuck (61) is fixed by the limiting member (21).

5. The airway structure for a pneumatic chuck according to claim 1, characterized in that: The sleeve assembly (4) comprises a fixed sleeve (41) and a movable sleeve (42); the movable sleeve (42) is connected to a movable chuck (62); the movable sleeve (42) is driven by the movable chuck (62) to move so as to control the clamping jaw (7); and a channel for a workpiece to pass through is formed in the fixed sleeve (41).

6. The airway structure for a pneumatic chuck according to claim 5, characterized in that: The chuck assembly (6) divides the air chamber (5) into a plurality of air chambers, and different air chambers (5) are respectively connected to different air passages (3).

7. The airway structure for a pneumatic chuck according to claim 2, characterized in that: A vent groove (12) and a sealing groove (13) are provided in the bearing outer cover (1); the vent groove (12) is in communication with the air passage (3) and the air hole (11); and a sealing member (14) for increasing air tightness is provided in the sealing groove (13).

8. The airway structure for a pneumatic chuck according to claim 1, characterized in that: A sealing ring (8) is provided on the outside of the air passage (3); the sealing ring (8) is provided at the connection between the bearing inner cover (2) and the bearing outer cover (1); the sealing ring (8) is used to reduce leakage of gas in the air passage (3).

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