Pneumatic chuck structure

Abstract

The application relates to a pneumatic chuck structure which comprises a disc body, a tensioning assembly and a motor assembly, the disc body is provided with an air channel, the tensioning assembly comprises a plurality of tensioning blocks, each tensioning block is slidably matched with the disc body in a radial direction, each tensioning block is driven to move by compressed air provided by the air channel, the motor assembly comprises a motor body, a motor rotating shaft and an air joint, the motor rotating shaft is rotationally arranged on the motor body, the motor rotating shaft is fixedly connected with the disc body, the motor rotating shaft is provided with a gas supply hole, the air joint is arranged on the gas supply hole and connected with the motor body, the air joint is rotationally connected with the disc body, and the air joint is communicated with the air channel. The application has the effect that the pneumatic chuck structure can actively discharge materials.

Description

Technical Field

[0001] This application relates to the field of chuck structures, and more particularly to a pneumatic chuck structure. Background Technology

[0002] Material rolls are typically made by winding strip products produced by continuous processes into roll packaging or spool packaging. To adapt to long-term turnover and the material supply needs of automated production lines, when feeding these material rolls, they need to be placed on a chuck structure so that users can unwind them in an orderly, stable and controllable manner.

[0003] Existing chuck structures typically include a cylinder with multiple tensioning blocks movably connected to it. Each tensioning block is driven by compressed air supplied by an air pump. When compressed air is introduced into the cylinder, each tensioning block moves away from the cylinder, thereby pressing each tensioning block against the material roll, thus enabling the material roll to be placed on the chuck structure for feeding.

[0004] Regarding the aforementioned technologies, since the tensioning block is driven by compressed air, in order to ensure the supply of compressed air to the cylinder, the cylinder can only rotate passively to achieve material feeding. That is, the chuck structure cannot be connected to the motor for active rotation and material feeding, resulting in poor usability. Summary of the Invention

[0005] In order to enable the pneumatic chuck structure to perform active feeding, this application provides a pneumatic chuck structure.

[0006] The pneumatic chuck structure provided in this application adopts the following technical solution:

[0007] A pneumatic chuck structure includes a disc body, a tensioning assembly, and a motor assembly. The disc body has an air passage. The tensioning assembly includes multiple tensioning blocks, each of which slides radially and engages with the disc body. Each tensioning block is driven to move by compressed air supplied through the air passage. The motor assembly includes a motor body, a motor shaft, and an air connector. The motor shaft is rotatably mounted on the motor body and fixedly connected to the disc body. The motor shaft has an air supply hole. The air connector is located at the air supply hole and connected to the motor body. The air connector is rotatably connected to the disc body and communicates with the air passage.

[0008] In one embodiment of this disclosure, a rotating bearing is provided between the disc body and the motor body. The inner ring of the rotating bearing is fixedly connected to the motor body, and the outer ring of the rotating bearing is fixedly connected to the disc body, so as to realize that the motor shaft is rotatably mounted on the motor body.

[0009] In one embodiment of this disclosure, the motor assembly further includes a control board, which is electrically connected to the motor body and used to control the motor body.

[0010] In one embodiment of this disclosure, the tensioning assembly further includes a drive piston disposed on the disc body, the drive piston having an air inlet and an air passage connected, and the drive piston being used to push each of the tensioning blocks to slide away from the disc body.

[0011] In one embodiment of this disclosure, the tensioning assembly further includes a drive ring, which slides axially against the disc body. Each tensioning block is provided with a first drive ramp, and the drive ring is provided with a plurality of second drive ramps. Each first drive ramp abuts against each second drive ramp, such that when the drive ring slides axially away from the disc body, the drive ring drives each tensioning block to slide radially away from the disc body. When the drive piston is driven, the drive piston drives the drive ring to slide axially away from the disc body, thereby driving the movement of each tensioning block.

[0012] In one embodiment of this disclosure, the tensioning assembly further includes an annular spring, which is wound around the outer periphery of each tensioning block and connected to each tensioning block, such that when the drive piston stops driving the drive ring, the annular spring squeezes each tensioning block to slide radially toward the disc body and pushes the drive ring to reset.

[0013] In one embodiment of this disclosure, each of the tensioning blocks is provided with a connecting groove, and the annular spring passes through each of the connecting grooves to realize the connection between each tensioning block and the annular spring.

[0014] In one embodiment of this disclosure, the driving piston includes a plug body and a plug ring, the plug body is slidably engaged with the plug ring, and when the driving piston is driven, the plug body slides away from the plug ring.

[0015] In one embodiment of this disclosure, the drive ring has a limiting groove, and the plug ring passes through the limiting groove to restrict the rotation of the drive ring.

[0016] In one embodiment of this disclosure, the disk body is detachably connected to a disk platter.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] When the material roll needs to be placed in the pneumatic chuck structure, the material roll is sleeved on the outer circumference of the chuck body. Compressed air is introduced into the air passage through the air connector, which drives each tensioning block to move away from the chuck body and press against the material roll, thus fixing the material roll in the pneumatic chuck. When the pneumatic chuck needs to unwind, the motor body drives the motor shaft to rotate, and the motor shaft drives the chuck body to rotate, thus enabling the pneumatic chuck to actively unwind the material roll. Because the chuck body is rotatably connected to the air connector, and the air connector is located in the air supply hole, the rotation of the chuck body and the motor shaft cannot affect the air supply to the air connector. Therefore, when the motor shaft drives the chuck body to rotate, the air connector always provides a stable air supply to the air passage, thus ensuring the stability of the tensioning blocks pressing against the material roll. This improves the problem that when the tensioning blocks are driven by compressed air, in order to ensure the supply of compressed air to the cylinder, the cylinder can only rotate passively to achieve unwinding, meaning that the chuck structure cannot be connected to the motor for active rotation and unwinding, resulting in poor usability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 1 ;

[0020] Figure 2 This is a cross-sectional view of the overall structure of an embodiment of this application. Figure 1 ;

[0021] Figure 3 This is an isometric sectional view of the overall structure of an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 2 ;

[0023] Figure 5 This is a cross-sectional view of the overall structure of an embodiment of this application. Figure 2 ;

[0024] Figure 6 This is a cross-sectional view of the overall structure of an embodiment of this application. Figure 3 ;

[0025] Figure 7 This is an exploded view of the overall structure of an embodiment of this application;

[0026] Figure 8 This is a schematic diagram of the tensioning component structure according to an embodiment of this application;

[0027] Figure 9 yes Figure 5 Enlarged view of part A;

[0028] Figure 10 This is a schematic diagram of the drive piston structure according to an embodiment of this application;

[0029] Figure 11This is an exploded view of the disk structure according to an embodiment of this application;

[0030] Figure 12 yes Figure 4 Enlarged view of part B;

[0031] Figure 13 This is a schematic diagram of the limiting block structure according to an embodiment of this application;

[0032] Figure 14 This is a schematic diagram of the disk connection in an embodiment of this application.

[0033] Explanation of reference numerals in the attached drawings: 10, material roll; 20, pneumatic chuck structure; 1, disc body; 1a, air passage; 1b, limiting block; 1b1, limiting rod; 11, material disc; 12, tensioning disc; 13, lifting disc; 14, disc plate; 141, fixing screw; 142, fixing groove; 2, tensioning assembly; 21, tensioning block; 211, first driving inclined surface; 212, connecting groove; 213, limiting slide groove; 22, driving ring; 221, second driving inclined surface; 222, limiting groove; 23, driving piston; 231, plug body; 232, plug ring; 24, ring spring; 3, axial direction; 4, radial direction; 5, motor assembly; 51, motor body; 511, rotating bearing; 52, motor shaft; 521, air supply hole; 53, air connector; 54, control board. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1 to 14 This application will be described in further detail.

[0035] This application discloses a pneumatic chuck structure. (Refer to...) Figures 1 to 3 A pneumatic chuck structure 20 includes a disc body 1, a tensioning assembly 2, and a motor assembly 5. The disc body 1 has an air passage 1a. The tensioning assembly 2 includes multiple tensioning blocks 21, each of which slides and engages with the disc body 1 in a radial direction 4. Each tensioning block 21 is driven to move by compressed air supplied by the air passage 1a. The motor assembly 5 includes a motor body 51, a motor shaft 52, and an air connector 53. The motor shaft 52 is rotatably mounted on the motor body 51 and is fixedly connected to the disc body 1. The motor shaft 52 has an air supply hole 521, and the air connector 53... The head 53 is located at the air supply hole 521 and connected to the motor body 51. The air connector 53 is rotatably connected to the disc 1 and is connected to the air passage 1a. It can be understood that the air connector 53 is externally connected to an air pump and delivers the compressed air provided by the air pump to the air passage 1a. In other embodiments, the air connector 53 can also be fixedly connected to the disc 1 and rotatably connected to an external air pump, thereby achieving a stable air supply to the air passage 1a. It should be understood that the axial direction 3 is the direction parallel to the axis of the disc 1, and the radial direction 4 is the diameter direction of the disc 1.

[0036] Reference Figures 1 to 3 In this embodiment of the application, a rotating bearing 511 is provided between the disc body 1 and the motor body 51. The inner ring of the motor body 51 and the rotating bearing 511 are fixedly connected, and the outer ring of the disc body 1 and the rotating bearing 511 are fixedly connected, so as to realize that the motor shaft 52 is rotatably mounted on the motor body 51.

[0037] Reference Figures 1 to 3 In this embodiment of the application, the motor assembly 5 further includes a control board 54, which is electrically connected to the motor body 51 and is used to control the motor body 51.

[0038] This allows the motor assembly 5 to be integrated into the pneumatic chuck structure 20 instead of existing as a separate component. Consequently, the pneumatic chuck structure 20 itself possesses the rotational characteristics of a motor, enabling it to rotate independently without the need for additional power sources. This allows the pneumatic chuck structure 20 to be quickly applied as an additional component in various workplaces requiring chuck structures for unwinding or rewinding, eliminating the need to consider providing a power source for it. Consequently, the pneumatic chuck structure 20 has improved applicability.

[0039] Reference Figures 4 to 13 In this embodiment, the tensioning assembly 2 further includes a drive piston 23, which is disposed on the disc body 1. The air inlet of the drive piston 23 is connected to the air passage 1a. The drive piston 23 is used to push each tensioning block 21 to slide away from the disc body 1. It should be understood that the compressed air in the air passage 1a can enter the drive piston 23, thereby driving the tensioning block 21. In other embodiments, the tensioning block 21 and the disc body 1 can also be in a hermetically sealed sliding fit, that is, the tensioning block 21 is a piston structure connected to the disc body 1, so that the compressed air in the air passage 1a directly drives the tensioning block 21 to move. In a further embodiment, the tensioning assembly 2 also includes a drive ring 22, which slides along the axial direction 3 on the disc body. Body 1, each tensioning block 21 is provided with a first driving inclined surface 211, and the driving ring 22 is provided with multiple second driving inclined surfaces 221. Each first driving inclined surface 211 abuts against each second driving inclined surface 221, so that when the driving ring 22 slides away from the disc body 1 along the axial direction 3, the driving ring 22 drives each tensioning block 21 to slide away from the disc body 1 along the radial direction 4. When the driving piston 23 is driven, the driving piston 23 drives the driving ring 22 to slide away from the disc body 1 along the axial direction 3, so as to realize the driving of each tensioning block 21. It should be understood that the driving piston 23 can indirectly drive the movement of the tensioning block 21 through the driving ring 22 described above, or it can directly drive the tensioning block 21 by connecting itself with the tensioning block 21.

[0040] Reference Figures 4 to 13In a further embodiment, the tensioning assembly 2 also includes a ring spring 24. The ring spring 24 is wound around the outer periphery of each tensioning block 21 and connected to each tensioning block 21, so that when the drive piston 23 stops driving the drive ring 22, the ring spring 24 squeezes each tensioning block 21 to slide towards the disk body 1 in the radial direction 4 and pushes the drive ring 22 to reset. It should be understood that the ring spring 24 is an elastic element, so the ring spring 24 can deform accordingly as each tensioning block 21 slides away from the disk body 1 in the radial direction 4, so that the ring spring 24 is always wound around the outer periphery of each tensioning block 21. Preferably, each tensioning block 21 is... A connecting groove 212 is provided, and annular springs 24 pass through each connecting groove 212 to realize the connection between each tensioning block 21 and annular springs 24, thereby ensuring that annular springs 24 are always wrapped around the outer periphery of each tensioning block 21. It should be understood that when the drive ring 22 slides along the axial direction 3, the annular springs 24 will not affect the sliding of the drive ring 22. In other embodiments, the connection method between each tensioning block 21 and annular spring 24 can also adopt other structures. For example, each tensioning block 21 is connected to a plastically deformable metal sheet. When annular spring 24 is connected to each tensioning block 21, each metal sheet is bent and wrapped around the outer periphery of annular spring 24.

[0041] Reference Figures 4 to 13 In a further embodiment, the driving piston 23 includes a plug body 231 and a plug ring 232. The plug body 231 is slidably engaged with the plug ring 232. When the driving piston 23 is driven, the plug body 231 slides away from the plug ring 232. It is understood that the number of plug bodies 231 can be one or more, and this application does not limit this. In addition, it should be understood that the plug ring 232 is provided with a channel for the flow of compressed gas and a chamber for the sliding of the plug body 231. So that when the compressed gas passes through the channel and flows into the chamber, the gas pressure of the compressed gas will push the plug body 231 to slide, thereby realizing the operation of the driving piston 23.

[0042] Reference Figures 4 to 13 In a further embodiment, the drive ring 22 has a limiting groove 222, and the plug ring 232 passes through the limiting groove 222 to restrict the rotation of the drive ring 22. The plug ring 232 passes through the limiting groove 222 in such a way that a part of the plug ring 232 extends and protrudes to pass through the limiting groove 222. Preferably, the plug body 231 is located in the extended and protruding structure of the plug ring 232, so that when the plug ring 232 passes through the limiting groove 222, the plug body 231 is located within the limiting groove 222. This makes it easier and more convenient for the plug body 231 to slide and push the drive ring 22 to slide, and makes the structural layout between the drive ring 22 and the drive piston 23 more compact.

[0043] Reference Figure 11In this embodiment of the application, the disc body 1 includes a material disc 11, a tensioning disc 12, and a lifting disc 13. The tensioning disc 12 is fixedly disposed on the material disc 11, and the lifting disc 13 is fixedly disposed on the tensioning disc 12. It should be understood that in this embodiment of the application, the plug ring 232 is fixedly connected to the material disc 11, the air passage 1a is disposed on the tensioning disc 12 and the lifting disc 13, and the drive ring 22 is slidably engaged with the tensioning disc 12.

[0044] Reference Figure 12 and Figure 13 In this embodiment, the disc body 1 is connected to a limiting block 1b, which restricts the movement of each tensioning block 21 along the axial direction 3. This allows the tensioning block 21 to slide stably against the disc body 1 under the action of the limiting block 1b, the drive ring 22, and the annular spring 24. No additional structure is needed to ensure the connection between the tensioning block 21 and the disc body 1. In a further embodiment, the limiting block 1b is connected to a limiting rod 1b1, and the tensioning block 21 has a limiting groove 213. The limiting rod 1b1 passes through the limiting groove 213. Through the cooperation of the limiting rod 1b1 and the limiting groove 213, the sliding stability of the tensioning block 21 is improved when it slides towards or away from the disc body 1 in the radial direction 4.

[0045] Reference Figure 14 In this embodiment, the disc body 1 is detachably connected to a disc 14. The disc 14 and the material tray 11 are arranged opposite each other, and the disc 14 and the material tray 11 cooperate to achieve abutment on both sides of the material roll 10, thereby ensuring that the material roll 10 is stably unwound on the pneumatic chuck structure 20. It is understood that the disc body 1 is threadedly connected to a fixing screw 141, and the disc 14 is provided with a fixing groove 142. When the fixing screw 141 passes through and engages with the fixing groove 142, the disc 14 is detachably connected to the disc body 1. It should be understood that the fixing groove 142 has a large groove that allows the fixing screw 141 to pass through and a small groove that engages with the fixing screw 141, so that the fixing screw 141 can pass through and engage with the fixing groove 142.

[0046] The implementation principle of the pneumatic chuck structure 20 in this embodiment is as follows: When the material roll 10 needs to be placed on the pneumatic chuck structure 20, the material roll 10 is sleeved on the outer periphery of the disc body 1, and compressed air is introduced into the air passage 1a through the air connector 53. This causes the compressed air to drive each tensioning block 21 to move away from the disc body 1 and press against the material roll 10, thereby fixing the material roll 10 to the pneumatic chuck structure 20. When the pneumatic chuck structure 20 needs to unwind, the motor body 51 drives the motor shaft 52 to rotate, and the motor shaft 52 drives the disc body 1 to rotate, thereby enabling the pneumatic chuck structure 20 to actively unwind the material roll 10. Because the disc body 1 is rotatably connected to the air connector 53, and the air connector 53 is located inside the air supply hole 521, the rotation of the disc body 1 and the motor shaft 52 does not affect the air supply to the air connector 53. As a result, when the motor shaft 52 drives the disc body 1 to rotate, the air connector 53 always provides a stable air supply to the air passage 1a, thereby ensuring the stability of the tensioning blocks 21 against the material roll 10. This improves the situation where the tensioning blocks 21 are driven by compressed air, and in order to ensure the supply of compressed air to the cylinder, the cylinder can only rotate passively to achieve material feeding. That is, the chuck structure cannot be connected to the motor for active rotation to feed material, resulting in poor usability.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pneumatic chuck structure, characterized in that: The device includes a disc body, a tensioning assembly, and a motor assembly. The disc body has an air passage. The tensioning assembly includes multiple tensioning blocks, each of which slides radially and engages with the disc body. Each tensioning block is driven to move by compressed air supplied through the air passage. The motor assembly includes a motor body, a motor shaft, and an air connector. The motor shaft is rotatably mounted on the motor body and fixedly connected to the disc body. The motor shaft has an air supply hole. The air connector is located at the air supply hole and connected to the motor body. The air connector is rotatably connected to the disc body and communicates with the air passage.

2. The pneumatic chuck structure according to claim 1, characterized in that: A rotating bearing is provided between the disc and the motor body. The inner ring of the rotating bearing is fixedly connected to the motor body, and the outer ring of the rotating bearing is fixedly connected to the disc, so as to realize that the motor shaft is rotatably mounted on the motor body.

3. The pneumatic chuck structure according to claim 1, characterized in that: The motor assembly also includes a control board, which is electrically connected to the motor body and used to control the motor body.

4. The pneumatic chuck structure according to claim 1, characterized in that: The tensioning assembly also includes a drive piston, which is disposed on the disc body. The air inlet and air passage of the drive piston are connected. The drive piston is used to push each of the tensioning blocks to slide away from the disc body.

5. The pneumatic chuck structure according to claim 4, characterized in that: The tensioning assembly further includes a drive ring, which slides axially against the disc body. Each tensioning block has a first drive ramp, and the drive ring has multiple second drive ramps. Each first drive ramp abuts against each second drive ramp, so that when the drive ring slides axially away from the disc body, the drive ring drives each tensioning block to slide radially away from the disc body. When the drive piston is driven, the drive piston drives the drive ring to slide axially away from the disc body, thereby driving the movement of each tensioning block.

6. The pneumatic chuck structure according to claim 5, characterized in that: The tensioning assembly also includes an annular spring, which is wound around the outer periphery of each tensioning block and connected to each tensioning block, so that when the drive piston stops driving the drive ring, the annular spring squeezes each tensioning block to slide radially toward the disc body and pushes the drive ring to reset.

7. The pneumatic chuck structure according to claim 6, characterized in that: Each of the tensioning blocks is provided with a connecting groove, and the annular spring passes through each of the connecting grooves to realize the connection between each tensioning block and the annular spring.

8. The pneumatic chuck structure according to claim 4, characterized in that: The driving piston includes a piston body and a piston ring. The piston body slides and engages with the piston ring. When the driving piston is driven, the piston body slides away from the piston ring.

9. The pneumatic chuck structure according to claim 8, characterized in that: The drive ring has a limiting groove, and the plug ring passes through the limiting groove to restrict the rotation of the drive ring.

10. The pneumatic chuck structure according to claim 1, characterized in that: The disk body is detachably connected to a disk platter.

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