Through key type adjustable inflatable shaft

Abstract

The utility model discloses a through key type adjustable air expansion shaft which comprises an aluminum pipe, a first flange and a second flange are installed at the two ends of the aluminum pipe, a main shaft is arranged in the aluminum pipe, one end of the main shaft is connected with a shaft head, the shaft head extends out of the first flange, a threaded groove is formed in the other end of the main shaft, an adjusting rod is arranged in the middle of the second flange, and the adjusting rod is connected with the main shaft. One end of the adjusting rod is located in the aluminum pipe and connected with the threaded groove, the other end of the adjusting rod penetrates out of the second flange and is connected with an adjusting hand wheel, an air bag is further arranged in the aluminum pipe, a plurality of key strips are arranged on the air bag, and the key strips protrude out of the aluminum pipe through expansion of the air bag. According to the utility model, the position of the coiled material can be finely adjusted without deflating the air bag, so that the operation steps during adjustment are reduced, and meanwhile, the problem that the position of the coiled material needs to be accurately positioned when the coiled material is reinstalled is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of air shafts, in particular to a key-type adjustable air shaft. Background Art

[0002] The through-key inflatable shaft is a kind of inflatable shaft that uses compressed air to inflate and deflate the airbag inside, so that the rubber key strip on the surface can expand and retract. It is often used in slitting and laminating machines such as slitting machines, rewinding machines, laminating machines, labeling machines, and die-cutting machines. When the through-key inflatable shaft is in use, the position of the coil will deviate during the continuous processing, and the position of the inflatable shaft and the coil needs to be adjusted. Then, it is necessary to go through multiple steps in sequence, such as deflation of the airbag, removal of the coil, adjustment of the inflatable shaft position, installation of the coil, and inflation of the airbag. It is troublesome to adjust the position, and it is difficult to position the coil again after deflation.

[0003] Therefore, it is necessary to provide a key-type adjustable air shaft that reduces the adjustment steps and quickly adjusts the position of the air shaft and the coil. Utility Model Content

[0004] The utility model provides a key-type adjustable air shaft to solve the problems raised in the above background technology.

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

[0006] A key-type adjustable inflatable shaft comprises an aluminum tube, flange 1 and flange 2 are installed at both ends of the aluminum tube, a main shaft is arranged in the aluminum tube, and one end of the main shaft is connected to a shaft head, and the shaft head extends out of flange 1, a thread groove is arranged at the other end of the main shaft, an adjustment rod is arranged in the middle of flange 2, one end of the adjustment rod is located in the aluminum tube and connected to the thread groove, and the other end of the adjustment rod is located outside flange 2 and connected to an adjustment hand wheel, an air bag is also arranged in the aluminum tube, a plurality of key strips are arranged on the air bag, and the key strips protrude out of the aluminum tube through the expansion of the air bag. The shaft head is fixed to the external platform, and after the air bag is inflated and the coil is fixed through the key strip, the position of the main shaft is fine-tuned by rotating the adjustment rod, thereby realizing fine-tuning of the position of the aluminum tube and the coil fixed thereto. The key strip can be made of rubber or other materials, and the key strip is an existing mature technology, which is not limited here.

[0007] Preferably, the adjusting rod is provided with a screw at one end inside the aluminum tube, the outer surface of the screw is provided with an external thread, the thread groove is provided with an internal thread near the thread groove opening, and the thread groove is provided with an adjusting spring for winding around the outer circumference of the screw, where the thread groove is not provided with an internal thread, and the length of the screw is shorter than the length inside the thread groove. The screw can move forward and backward along the internal thread in the thread groove, thereby driving the spindle to make a fine adjustment of the forward and backward movement. The adjusting spring is used to fill the gap between the screw and the inner wall of the thread groove.

[0008] Preferably, the flange 2 is provided with a bearing 1, and the adjusting rod is mounted on the flange 2 via the bearing 1. The bearing 1 is used to improve the rotation smoothness of the adjusting rod and facilitate adjustment.

[0009] Preferably, an air nozzle is provided on the top of flange 2, an air cavity is provided inside flange 2, a plurality of mounting grooves are provided on the aluminum tube, air holes connected to the air cavity are provided in the mounting grooves, the airbag is placed in the mounting grooves, and a copper nozzle is provided on the airbag, which is connected to the air cavity through the air holes.

[0010] Preferably, airbag pressing blocks are provided at both ends of the airbag, which are fixedly connected to the aluminum tube by screws to enhance the air tightness of the airbag.

[0011] Preferably, the outer peripheral surface of the main shaft is sleeved with a second bearing for contacting and rotating with the inner wall of the aluminum tube. The second bearing is used to fix the main shaft and the aluminum tube to be at the same level.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model provides a threaded groove at the end of the main shaft to connect with the adjusting rod. When the position of the coil needs to be adjusted, the main shaft position can be moved by adjusting the position of the screw rod in the threaded groove by adjusting the hand wheel, and then the position of the coil is fine-tuned, which greatly reduces the operation steps. There is no need to deflate the airbag to remove the coil, and the problem of positioning when reinstalling the coil is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the internal cross-sectional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the external structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the aluminum tube structure of the utility model;

[0017] 1. Aluminum tube; 2. Flange 1; 3. Flange 2; 4. Main shaft; 5. Threaded groove; 6. Adjusting rod; 7. Screw; 8. Adjusting hand wheel; 9. Adjusting spring; 10. Air bag; 11. Key strip; 12. Air nozzle; 13. Air cavity; 14. Copper nozzle; 15. Air bag pressure block; 16. Bearing 1; 17. Bearing 2; 18. Shaft head; 19. Mounting groove; 20. Vent hole. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Reference Figure 1-3 A through-key adjustable inflatable shaft comprises an aluminum tube 1, flange 1 2 and flange 2 3 are installed at both ends of the aluminum tube 1, a main shaft 4 is arranged in the aluminum tube 1, and one end of the main shaft 4 is connected to a shaft head 18, and the shaft head 18 extends out of the flange 1 2, a thread groove 5 is arranged at the other end of the main shaft 4, an adjusting rod 6 is arranged in the middle of the flange 2 3, one end of the adjusting rod 6 is located in the aluminum tube 1 and connected to the thread groove 5, and the other end of the adjusting rod 6 is located outside the flange 2 3 and connected to an adjusting hand wheel 8, and an air bag 10 is also arranged in the aluminum tube 1, and a plurality of key strips 11 are arranged on the air bag 10, and the key strips 11 are expanded by the air bag 10 and protrude out of the aluminum tube 1. The shaft head 18 is fixed to the external platform, and after the air bag 10 is inflated to fix the coil through the key strips 11, the position of the main shaft 4 is fine-tuned by rotating the adjusting rod 6, thereby realizing the fine-tuning of the position of the aluminum tube 1 and the coil fixed thereto. The key strip 11 can be made of rubber or other materials. The key strip 11 is an existing mature technology and is not limited here.

[0020] The adjusting rod 6 is located in the aluminum tube 1, and one end of the adjusting rod 6 is provided with a screw rod 7. The outer surface of the screw rod 7 is provided with an external thread. The thread groove 5 is provided with an internal thread near the opening of the thread groove 5. The thread groove 5 is provided with an adjusting spring 9 for winding around the outer circumference of the screw rod 7. The length of the screw rod 7 is shorter than the length of the thread groove 5. The screw rod 7 can move forward and backward along the internal thread in the thread groove 5, thereby driving the main shaft 4 to make a fine adjustment of the forward and backward movement. The adjusting spring 9 is used to fill the gap between the screw rod 7 and the inner wall of the thread groove 5.

[0021] The flange 2 3 is provided with a bearing 16, and the adjusting rod 6 is mounted on the flange 2 3 through the bearing 16. The bearing 16 is used to improve the rotation smoothness of the adjusting rod 6 and facilitate adjustment.

[0022] An air nozzle 12 is provided on the top of the flange 23, an air cavity 13 is provided inside the flange 23, a plurality of mounting grooves 19 are provided on the aluminum tube 1, an air vent 20 connected to the air cavity 13 is provided in the mounting groove 19, the airbag 10 is placed in the mounting groove 19, and a copper nozzle 14 is provided on the airbag 10, and the copper nozzle 14 is connected to the air cavity 13 through the air vent 20.

[0023] Airbag pressing blocks 15 are also provided at both ends of the airbag 10. The airbag pressing blocks 15 are fixedly connected to the aluminum tube 1 by screws to enhance the air tightness of the airbag 10.

[0024] The outer peripheral surface of the main shaft 4 is sleeved with a bearing 2 17 for contacting and rotating with the inner wall of the aluminum tube 1. The bearing 2 17 is used to fix the main shaft 4 and the aluminum tube 1 to be at the same level.

[0025] When in use, the coil is put on the outside of the aluminum tube 1, and the airbag 10 is inflated through the air nozzle 12, the air cavity 13, and the copper nozzle 14. After the airbag 10 is inflated, the key strip 11 protrudes outside the installation groove 19 and contacts and fixes with the inner wall of the coil, thereby fixing the coil. When it is necessary to adjust the position of the coil, the adjustment hand wheel 8 is rotated, and the screw 7 is driven to rotate in the thread groove 5 through the adjustment rod 6, so that the screw 7 moves in the thread groove 5, and then the main shaft 4 and the shaft head 18 are driven to move, so as to achieve fine adjustment of the position of the aluminum tube 1 and the coil. The utility model can achieve fine adjustment of the position of the coil without deflating the airbag 10, which reduces the operation steps during adjustment and avoids the problem of precise positioning of the coil position required when reinstalling the coil.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A key-type adjustable inflatable shaft, comprising an aluminum tube (1), characterized in that: Flange 1 (2) and flange 2 (3) are installed at both ends of the aluminum tube (1). A main shaft (4) is arranged inside the aluminum tube (1), and one end of the main shaft (4) is connected to a shaft head (18), and the shaft head (18) extends out of flange 1 (2). A threaded groove (5) is arranged at the other end of the main shaft (4). An adjusting rod (6) is arranged in the middle of flange 2 (3). One end of the adjusting rod (6) is located inside the aluminum tube (1) and is connected to the threaded groove (5). The other end of the adjusting rod (6) is located outside the flange 2 (3) and is connected to an adjusting hand wheel (8). An air bag (10) is also arranged inside the aluminum tube (1). A plurality of key strips (11) are arranged on the air bag (10), and the key strips (11) are expanded by the air bag (10) and protrude out of the aluminum tube (1).

2. The key-type adjustable air shaft according to claim 1, characterized in that: The adjusting rod (6) is located inside the aluminum tube (1) and is provided with a screw rod (7) at one end thereof. The outer surface of the screw rod (7) is provided with an external thread. The thread groove (5) is provided with an internal thread near the opening of the thread groove (5). The thread groove (5) is provided with an adjusting spring (9) for winding around the outer circumference of the screw rod (7) at a position where the internal thread is not provided. The length of the screw rod (7) is shorter than the length inside the thread groove (5).

3. The key-type adjustable air shaft according to claim 2, characterized in that: The second flange (3) is provided with a bearing one (16), and the adjusting rod (6) is installed on the second flange (3) through the bearing one (16).

4. The key-type adjustable air shaft according to claim 3, characterized in that: The top of the second flange (3) is provided with an air nozzle (12), the interior of the second flange (3) is provided with an air cavity (13), the aluminum tube (1) is provided with a plurality of mounting grooves (19), the mounting grooves (19) are provided with vent holes (20) connected to the air cavity (13), the air bag (10) is placed in the mounting grooves (19), and the air bag (10) is provided with a copper nozzle (14), and the copper nozzle (14) is connected to the air cavity (13) through the vent holes (20).

5. The key-type adjustable air shaft according to claim 1, characterized in that: Airbag pressing blocks (15) are also provided at both ends of the airbag (10).

6. The key-type adjustable air shaft according to claim 1, characterized in that: The outer peripheral surface of the main shaft (4) is sleeved with a second bearing (17) for rotating in contact with the inner wall of the aluminum tube (1).

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