A dual air path rotary structure

Abstract

The utility model belongs to rotary mechanism equipment technical field, concretely is a kind of double gas path rotary structure. Solve the double gas path rotary structure pivot, air inlet block and sealing wear problem, including: frame main body;Pivot, the pivot is set two groups, is symmetrically installed on frame main body by bearing mounting assembly, and the immersion coating clamp and connecting plate are installed between the pivot of two sides, driven sprocket is installed in the middle of pivot;Drive speed reducer and drive sprocket mechanism, the drive speed reducer and drive sprocket mechanism adopt chain drive driven sprocket rotation. The utility model improves the transmission reliability and the convenience of installation and maintenance. Overall structure is compact and rigid, significantly improves equipment efficiency and reliability.

Description

Technical Field

[0001] This utility model belongs to the technical field of rotating mechanism equipment, specifically a dual-air-path rotating structure. Background Technology

[0002] The dip-coating robot is a crucial component of the two-stage casting cylinder head production line, enabling automated dip-coating and quality control of sand cores. The rotating mechanism is the core component of the dip-coating robot, responsible for sand core flipping, dip-coating, and coating drainage. The rotating mechanism uses a rigid connection to install the clamps. During production in the original position, the robot lowers to pick up the sand core, then rises to the top position. The rotating mechanism rotates 180° to the dip-coating position to dip the sand core. After dip-coating, the rotating mechanism rotates 720° to drain excess coating from the sand core. Once the coating is drained, the rotating mechanism returns to the 0 position, the equipment places the sand core onto the drying tray, and then the equipment returns to its original position. The internal sand core clamping and loosening, top core retraction, and control valve and actuator cylinder control pipeline of the dip coating fixture have a dual air path rotation structure. This structure is designed so that the rotating shaft and the air inlet (pass) block cooperate with each other to ensure that the air path is unobstructed and leak-free. The sealing ring inside the air inlet (pass) block works together with the rotating shaft, and the air from the two air path chambers enters two different air passages above the rotating shaft, thereby realizing dual air path rotation.

[0003] However, during use, the rotating mechanism shaft exhibits slight radial movement, causing wear on the seals, shaft, and air intake / exit block. On average, the shaft, air intake / exit block, bearings, and seals need to be replaced approximately every 30 days due to wear on the seals or the equipment itself. The spare parts have a short service life, and replacing the shaft and related spare parts is time-consuming and labor-intensive, requiring 4 hours to complete each replacement. Replacing the drive-side seal alone takes 1 hour. Summary of the Invention

[0004] This utility model mainly solves the problem of wear on the shaft, air inlet block and seal of the dual-air-path rotary structure, improves and increases the service life of the structure, reduces the repair time of this structure, thereby improving the stability and reliability of the equipment, and provides a dual-air-path rotary structure.

[0005] This utility model adopts the following technical solution: a dual-air-path rotary structure, comprising: The main framework; Two sets of rotating shafts are provided and are symmetrically installed on the frame body through bearing mounting components. Dipping clamps and connecting plates are installed between the rotating shafts on both sides, and driven sprockets are installed in the middle of the rotating shafts. A drive reducer and a drive sprocket mechanism are provided, wherein the drive reducer and the drive sprocket mechanism use a chain to drive the driven sprocket to rotate.

[0006] In some embodiments, the bearing mounting assembly includes: A front sealing cover and seal are installed on the frame body. A thrust bearing mounting seat and a radial rolling bearing are provided inside the front sealing cover and seal. An axial thrust bearing is installed inside the thrust bearing mounting seat. The rotating shaft passes through the radial rolling bearing and the axial thrust bearing. An air intake block is connected to the outer end of the rotating shaft and fixed to the frame body.

[0007] In some embodiments, the intake block includes: The intake block body has a cavity for mounting the rotating shaft, and a radial rolling bearing is provided at the outlet of the cavity to allow the rotating shaft to pass through. An air passage cavity is located in the middle of the cavity and is connected to the outside through a channel provided on the air intake block body; Two sealing cavities are provided, symmetrically arranged on both sides of the air passage cavity, for installing sealing rings.

[0008] In some embodiments, the inside of the rotating shaft is a hollow cavity, with one end of the cavity connected to the air passage cavity and the other end connected to the outside.

[0009] In some embodiments, the shaft is a stepped shaft, and a driven sprocket is connected and installed in the middle of the shaft. The connection and installation positions are connected by a tightening connection device.

[0010] In some embodiments, the expansion connection device includes: The expansion member is fixed to the frame body by bolts. The front end of the expansion member is a cylindrical structure with a gradually decreasing outer diameter. The inside of the cylindrical structure is hollow to allow the rotating shaft to pass through. A sleeve is fitted onto the cylindrical structure of the expansion member and expandably connected to the cylindrical structure. The sleeve is inserted into the driven sprocket and rotatably connected to the driven sprocket.

[0011] In some embodiments, the framework body includes: Column frame I and column frame II; The upper ends of column frame I and column frame II are connected to the connecting parts above the robot arm, and the lower ends are equipped with a rotating shaft for connecting and installing the dip coating fixture and the connecting plate.

[0012] In some embodiments, only one set of drive reducer and drive sprocket mechanism is provided, and only the driven sprocket on one side is driven.

[0013] In some embodiments, a chain tensioning mechanism is installed at the chain location.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This dual-gas-path rotary structure provides a stable, reliable, and highly airtight solution, its core being the independent dual-path gas transmission between the rotating and stationary components. Its symmetrically arranged shafts are securely supported on the frame by integrated thrust and radial bearings, ensuring smooth rotation under high loads. A unique air intake block design, combined with internal cavities and multiple seals, effectively guarantees leak-free transmission of both gases during rotation. The use of a single-sided chain drive (including a tensioning mechanism) combined with a shrink-fit connection device for mounting the sprockets simplifies the structure and improves transmission reliability and ease of installation and maintenance. The overall structure is compact and rigid, significantly enhancing equipment efficiency and reliability. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the present utility model; Figure 2 This is a side view of the present invention; Figure 3 This is a structural diagram of the bearing mounting assembly of this utility model; Figure 4 This is a schematic diagram of the rotating shaft structure of this utility model; In the figure, 1-rotating shaft, 2-inlet block, 2.1-inlet block body, 2.2-cavity, 2.3-air passage cavity, 2.4-channel, 2.5-sealing cavity, 3-front sealing cover and seal, 5-driven sprocket, 6-expansion connection device, 6.1-expansion element, 6.2-sleeve, 7-thrust bearing mounting seat, 11-radial rolling bearing I, 13-axial thrust bearing, 14-radial rolling bearing II, 21-drive reducer and drive sprocket mechanism, 22.1-column frame I, 22.1-column frame II, 23-chain tensioning mechanism, 24-connecting component above the robot arm, 25-dipping fixture and connecting plate. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] like Figure 1 , 2 As shown, a dual-air-path rotating structure includes: The main framework; Two sets of rotating shafts 1 are provided and are symmetrically installed on the frame body through bearing mounting components. Dipping clamps and connecting plates 25 are installed between the two rotating shafts 1 on both sides, and driven sprockets 5 are installed in the middle of the rotating shafts 1. The drive reducer and drive sprocket mechanism 21 are driven by a chain to rotate the driven sprocket 5.

[0018] like Figure 3 As shown, the bearing mounting assembly includes: The front sealing cover and seal 3 are installed on the frame body. The front sealing cover and seal 3 are provided with a thrust bearing mounting seat 7 and a radial rolling bearing I11. An axial thrust bearing 13 is installed in the thrust bearing mounting seat 7. The rotating shaft 1 passes through the radial rolling bearing I11 and the axial thrust bearing 13. Air intake block 2 is connected to the outer end of the rotating shaft 1 and fixed to the frame body.

[0019] Intake block 2 includes: The air intake block body 2.1 has a cavity 2.2 inside for mounting the rotating shaft 1. A radial rolling bearing II14 is provided at the outlet of the cavity 2.2 for the rotating shaft 1 to pass through. Air passage cavity 2.3, which is located in the middle of cavity 2.2 and is connected to the outside through channel 2.4 provided on air intake block body 2.1; Two sealing cavities 2.5 are provided, symmetrically arranged on both sides of the air passage cavity 2.3, for installing sealing rings 12.

[0020] like Figure 4 As shown, the inside of the rotating shaft 1 is a hollow cavity 1.1. One end of the cavity 1.1 is connected to the air passage cavity 2.3, and the other end is connected to the outside.

[0021] Specifically, gas enters the gas passage chamber 2.3 from the channel 2.4, then enters the rotating shaft 1 from the gas passage chamber 2.3, and is connected to the outside from the outlet at the other end of the rotating shaft 1. The sealing rings 12 on both sides seal the entire gas passage.

[0022] The rotating shaft 1 is a stepped shaft, and the driven sprocket 5 is connected and installed in the middle of the rotating shaft 1. The connection and installation position is connected by a tightening connection device 6.

[0023] The tensioning connection device 6 includes: The expansion member 6.1 is fixed to the frame body by bolts. The front end of the expansion member 6.1 is a cylindrical structure with a gradually decreasing outer diameter. The inside of the cylindrical structure is hollow to allow the rotating shaft 1 to pass through. Sleeve 6.2 is fitted onto the cylindrical structure of the expansion member 6.1 and is expanded and connected to the cylindrical structure. Sleeve 6.2 is inserted into the driven sprocket 5 and is rotatably connected to the driven sprocket 5.

[0024] The main framework includes: Column frame I22.1 and column frame II22.1; The upper ends of column frame I22.1 and column frame II22.1 are connected to the upper connecting component 24 of the robot arm, and the lower ends are equipped with a rotating shaft 1 for connecting and installing the dip coating fixture and the connecting plate 25.

[0025] Only one set of drive reducer and drive sprocket mechanism 21 is provided, and it only drives the driven sprocket 5 on one side.

[0026] Install the chain tensioning mechanism 23 at the chain position.

[0027] The bearing mounting assembly is connected to the connecting component 24 above the robot arm. The drive mechanism 1 uses a chain drive structure to drive the driven sprocket 5 to rotate (the sprocket 5 and the rotating shaft are connected by a shrink-fit connection device 6), realizing the rotation of the coating fixture and the connecting plate 25. The two rotating shafts 1 on both sides are connected to the fixture 25. Each rotating shaft has two radial rolling bearings 11 and radial rolling bearing II 14 to ensure the rotation of the mechanism. An additional axial thrust bearing 13 is added to ensure that the mechanism has no axial movement. The double-sided bearing support improves the smoothness of the rotating shaft rotation and reduces wear caused by radial movement of the rotating shaft. The two sealing rings inside the air intake block 2 work together with the rotating shaft 1 to ensure normal airflow in the air passage cavity. After the sealing ring 12 wears out, it can be replaced simply by removing the air intake block 2. The seal replacement time is 1 hour.

[0028] The replacement cycle for spare parts has been increased from 30 days to over 90 days, and the repair time for wear on the drive-side seal has been reduced to less than 10 minutes, thus reducing maintenance time; increasing equipment reliability and stability; and reducing the amount of spare parts used, thereby saving costs.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dual-air-path rotary structure, characterized in that, include: The main framework; Two sets of rotating shafts (1) are provided and are symmetrically installed on the frame body through bearing mounting components. Dipping clamps and connecting plates (25) are installed between the rotating shafts (1) on both sides. Driven sprockets (5) are installed in the middle of the rotating shafts (1). The drive reducer and drive sprocket mechanism (21) are driven by a chain to drive the driven sprocket (5) to rotate.

2. The dual-air-path rotating structure according to claim 1, characterized in that, The bearing mounting assembly includes: A front sealing cover and seal (3) are installed on the frame body. A thrust bearing mounting seat (7) and a radial rolling bearing I (11) are provided inside the front sealing cover and seal (3). An axial thrust bearing (13) is installed inside the thrust bearing mounting seat (7). The rotating shaft (1) passes through the radial rolling bearing I (11) and the axial thrust bearing (13). Air intake block (2) is connected to the outer end of the rotating shaft (1) and fixed to the frame body.

3. The dual-air-path rotating structure according to claim 2, characterized in that, The air intake block (2) includes: The intake block body (2.1) has a cavity (2.2) inside for mounting the rotating shaft (1), and a radial rolling bearing II (14) is provided at the outlet of the cavity (2.2) for the rotating shaft (1) to pass through. The air passage cavity (2.3) is located in the middle of the cavity (2.2) and is connected to the outside through the channel (2.4) provided on the air intake block body (2.1); Two sealing cavities (2.5) are provided, symmetrically arranged on both sides of the gas passage cavity (2.3), for installing sealing rings (12).

4. The dual-air-path rotating structure according to claim 3, characterized in that, The rotating shaft (1) has a hollow cavity (1.1) inside. One end of the cavity (1.1) is connected to the air passage cavity (2.3), and the other end is connected to the outside.

5. The dual-air-path rotating structure according to claim 1 or 4, characterized in that, The rotating shaft (1) is a stepped shaft, and the driven sprocket (5) is connected and installed in the middle of the rotating shaft (1). The connection and installation position is connected by a tightening connection device (6).

6. The dual-air-path rotating structure according to claim 5, characterized in that, The expansion connection device (6) includes: The expansion member (6.1) is fixed to the frame body by bolts. The front end of the expansion member (6.1) is a cylindrical structure with a gradually decreasing outer diameter. The inside of the cylindrical structure is hollow to allow the rotating shaft (1) to pass through. Sleeve (6.2) is fitted onto the cylindrical structure of the expansion member (6.1) and expands to connect with the cylindrical structure. Sleeve (6.2) is inserted into the driven sprocket (5) and rotates to connect with the driven sprocket (5).

7. The dual-air-path rotating structure according to claim 1, characterized in that, The main body of the framework includes: Column frame I (22.1) and column frame II (22.2); The upper ends of the column frame I (22.1) and column frame II (22.2) are connected to the upper connecting part (24) of the robot arm, and the lower ends are equipped with a rotating shaft (1) for connecting the dip coating fixture and the connecting plate (25).

8. The dual-air-path rotating structure according to claim 1 or 7, characterized in that, The drive reducer and drive sprocket mechanism (21) is provided in only one set, and only drives the driven sprocket (5) on one side.

9. The dual-air-path rotating structure according to claim 1, characterized in that, The chain tensioning mechanism (23) is installed at the chain position.

Images