air shaft automatic shaft pulling machine

Abstract

The utility model discloses automatic axle pulling machine air inflation axle belongs to air inflation axle field. Including axle pipe, this axle pipe one end has axle head no. 1, the other end has axle head no. 2, and axle head no. 2 includes support part, and support part guarantees axle head rigidity, and the one end fixed setting of support part has external part, and the external part is threadedly connected with the air cock, the protection assembly is set up on the external part, and the protection assembly includes the fastening part for reinforcing installation to the air cock, and the external part is equipped with the protection part for protecting the air cock under the non -use state. The automatic axle pulling machine air inflation axle of the present application air inflation axle, through setting up the protection assembly, effectively solved the problem that the existing air inflation axle air cock is vulnerable to damage, and the problem of blockage, and the fastening part can form the firm reinforcement to the air cock, avoid the equipment high -frequency operation or vibration and lead to the air cock loose, ensure that the gas path connection is reliable, and the protection part can seal protection when the air cock is not used, and dust, oil dirt etc. invade, prevent interface pollution or damage.

Description

Technical Field

[0001] This utility model relates to the field of air shaft technology, and in particular to the air shaft of an automatic air shaft pulling machine. Background Technology

[0002] Air-expanding shafts, as core components that achieve rapid fixing and release of roll materials through inflation, are widely used in the unwinding and rewinding processes of industries such as printing, coating, slitting, and rewinding. They rely on airbag inflation to cause components such as keyways and tiles on the shaft surface to protrude, tightly fitting the inner core of the roll material (such as paper tubes or FRP tubes). After deflation, the components retract, completing the unloading process and improving the convenience of loading and unloading roll materials.

[0003] Existing air shafts mainly consist of a shaft body, an air bladder, expansion components (such as key strips or tiles), and an air shaft head. The air shaft head is a key component that works with an automatic shaft pulling machine. Its structure includes a cylindrical main body with a clamping end, a mounting end, an external end, and a support end arranged axially along the main body. The mounting end is used to mate with the inner hole at the end of the air shaft body, forming a stable connection between the shaft head and the shaft body. The external end is exposed outside the air shaft body. A countersunk screw hole is formed on the outer circumference of the external end, and an air outlet is formed on the end face of the clamping end. The lowest end of the countersunk screw hole communicates with the air outlet, and the countersunk screw hole is used to install an air nozzle.

[0004] However, in practical use, although the external design avoids direct damage to the air nozzle during the rotation of the air shaft, the exposed air nozzle lacks a dedicated protective structure due to the presence of floating dust and splashing oil in the workshop environment. Its interface is easily deformed and worn by external impacts, or blocked by dust and oil accumulation, leading to obstructed airflow during inflation and poor exhaust during deflation, thus affecting the expansion / contraction response speed of the air shaft. Therefore, an automatic air shaft removal machine is needed to design the air shaft.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] This utility model provides an automatic air shaft removal machine for air shafts, which solves the problem that in actual use, the external air nozzle is easily affected by the workshop environment due to the lack of protection, resulting in wear and blockage of the interface and poor air filling and discharging.

[0007] This utility model embodiment adopts the following technical solution: an automatic air shaft pulling machine for air shafts. It mainly includes a shaft tube, one end of which has a shaft head one, and the other end has a shaft head two. The shaft head two includes a support portion that ensures the rigidity of the shaft head. An external portion is fixedly disposed at one end of the support portion, and an air nozzle is threadedly connected to the external portion. A protective component is disposed on the external portion. The protective component includes a fastening portion for reinforcing the air nozzle installation, and the external portion also has a protective portion for protecting the air nozzle when not in use.

[0008] Furthermore, the fastening part includes a reinforcement fitting sleeved on the air nozzle, with two sets of fixing pins inserted through the reinforcement fitting. The fixing pins have pin protrusions with a structure that is larger at the top and smaller at the bottom. The pin protrusions are made of deformable plastic material and have a certain degree of elasticity and toughness. The external part has corresponding pin holes that are adapted to the pin protrusions.

[0009] Furthermore, the protective part includes a sealing cover that is hinged to the external part. The bottom of the sealing cover is designed as an arc-shaped structure that matches the surface of the external part. A sealing gasket is provided at the contact position between the arc-shaped structure and the surface of the external part. An arc block is integrally provided on the side of the sealing cover. The curvature of the arc block matches the curvature of the surface of the external part. Two sets of wing screws are threadedly connected to the arc block. Correspondingly, the external part is provided with threaded holes that match the wing screws.

[0010] Furthermore, one end of the external part is provided with a mounting part, the mounting part has a keyway hole and mates with the inner hole of the shaft tube end, one end of the mounting part is provided with a clamping end, the surface of the clamping end has a clamping groove, the clamping groove is an arc-shaped groove and is arranged in a ring on the outer circle surface of the clamping end, and at least two arc-shaped grooves are provided on the outer circle surface of the clamping end.

[0011] Furthermore, air holes are provided in the clamping end, the mounting part, and the external part, and the air holes in the clamping end and the mounting part are interconnected.

[0012] Furthermore, a recessed groove is formed on the surface of the external part, and a screw hole is connected to the recessed groove. The screw hole is connected to the air hole, and the air nozzle is threadedly connected to the screw hole and partially located in the recessed groove.

[0013] Furthermore, a sealing gasket is provided at the step position where the sinking groove connects with the screw hole.

[0014] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0015] The air shaft of the automatic air shaft puller effectively solves the problems of easy damage and blockage of existing air shaft nozzles by incorporating protective components. The fastening part provides a stable reinforcement for the nozzle, preventing it from loosening due to high-frequency operation or vibration of the equipment, and ensuring reliable air circuit connection. The protective part can seal and protect the nozzle when it is not in use, preventing dust, oil, and other contaminants from entering and preventing interface contamination or damage. Compared with the exposed nozzles in existing technologies, this solution provides full-condition protection for the nozzle through protective components, reducing problems such as air pressure obstruction and poor air release caused by nozzle deformation, wear, and blockage. This ensures stable expansion / contraction response speed of the air shaft and improves the reliability of its cooperation with the automatic air shaft puller. Attached Figure Description

[0016] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 This is an overall schematic diagram of the air shaft of the automatic air shaft removal machine in this application;

[0019] Figure 2 for Figure 1 Exploded view;

[0020] Figure 3 for Figure 2 Enlarged view of point A;

[0021] Figure 4 for Figure 3 A partial sectional view;

[0022] Figure label:

[0023] 1. Shaft assembly; 11. Shaft tube; 12. Sheet; 121. Bolt; 13. Shaft head one; 14. Support part; 15. External part; 151. Threaded hole; 152. Recessed groove; 153. Screw hole; 154. Sealing washer; 16. Mounting part; 161. Keyway hole; 17. Clamping end; 171. Air hole; 18. Air nozzle; 3. Protective assembly; 31. Sealing cover; 32. Arc block; 33. Wing screw; 34. Reinforcing part; 35. Fixing pin; 36. Pin protrusion. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0026] Reference Figures 1-4 As shown, this utility model embodiment provides an air-expanding shaft automatic shaft pulling machine, including a shaft body assembly 1, which includes a shaft tube 11. The shaft tube 11 serves as a basic load-bearing structure, and tiles 12 with an arc-shaped plate structure are evenly distributed along the circumference of the shaft tube 11. The tiles 12 are connected to the shaft tube 11 by bolts 121, which can realize the functions of expanding and clamping the inner core of the roll material and shrinking and unloading (this is the prior art, and will not be described in detail here). One end of the shaft tube 11 has a shaft head 13, and the other end has a shaft head 2.

[0027] The second shaft head includes a support part 14, which ensures the rigidity of the shaft head. An external part 15 is fixedly provided at one end of the support part 14. The external part 15 is used to arrange ventilation accessories. At the same time, an installation part 16 is fixedly provided at one end of the external part 15. The installation part 16 has a keyway hole 161, which cooperates with the inner hole at the end of the shaft tube 11 to prevent the shaft head from rotating relative to the shaft tube 11. A clamping end 17 is provided at one end of the installation part 16. The surface of the clamping end 17 has a clamping groove (not shown in the figure). The clamping groove is an arc-shaped groove and is arranged in a ring on the outer circle surface of the clamping end 17. At least two arc-shaped grooves are provided on the outer circle surface of the clamping end 17 to achieve locking with the clamping member inside one end of the shaft tube 11, ensuring that the shaft head and the shaft tube 11 do not loosen during high-speed winding.

[0028] Meanwhile, air holes 171 are provided in the clamping end 17, the mounting part 16 and the external part 15. The air holes 171 in the clamping end 17 and the mounting part 16 are interconnected to provide an air passage for the inflation and deflation of the air shaft. A recessed groove 152 is provided on the surface of the external part 15. A screw hole 153 is connected to the recessed groove 152. The screw hole 153 is connected to the air hole 171. An air nozzle 18 is threadedly connected to the screw hole 153 and in a local position inside the recessed groove 152. This design not only ensures the smooth connection of the air passage, but also provides natural protection for the air nozzle 18 through the recessed groove 152.

[0029] In the air passage connection structure of the external part 15 of the shaft head 2, in order to further improve the sealing performance of the connection between the air nozzle 18 and the screw hole 153, a sealing washer 154 is provided at the step position where the recessed groove 152 connects with the screw hole 153. When the air nozzle 18 is screwed into the screw hole 153 through the thread, as the air nozzle 18 is gradually tightened, the bottom of the air nozzle 18 will squeeze the sealing washer 154, causing the sealing washer 154 to undergo elastic deformation and tightly fill the gap between the air nozzle 18 and the step surface, forming a reliable sealing structure. This effectively prevents external dust, oil stains and other impurities from entering the air passage system through the connection between the screw hole 153 and the air hole 171, avoiding the impact of air leakage and blockage on the expansion and contraction accuracy of the air shaft, ensuring that the air shaft works stably and reliably in the winding and unwinding operations, improving the overall sealing performance and service life of the air shaft, and adapting to the complex production environment of the workshop;

[0030] To further enhance the stability of the air nozzle 18 after installation and prevent it from loosening under conditions such as high-frequency operation of the equipment or slight external vibration, such as... Figures 2-4 As shown, a protective component 3 is provided on the external part 15. The protective component 3 includes a fastening part for reinforcing the installation of the air nozzle 18. The fastening part includes a reinforcement part 34 that is fixedly sleeved on the air nozzle 18. Two sets of fixing pins 35 are inserted through the reinforcement part 34. The fixing pins 35 have pin protrusions 36 with a structure that is larger at the top and smaller at the bottom. The pin protrusions 36 are made of deformable plastic material and have a certain degree of elasticity and toughness. At the same time, corresponding pin holes (not shown in the figure) are opened on the external part 15 to match the pin protrusions 36.

[0031] When installing the air nozzle 18, first screw the air nozzle 18 into the screw hole 153 and seal it with the sealing washer 154. Then, put the reinforcement part 34 on the air nozzle 18 at the appropriate position, insert the fixing pin 35 into the reinforcement part 34, and align the pin protrusion 36 with the pin hole of the external part 15. By pressing or other means, the deformable pin protrusion 36 is squeezed into the pin hole. After installation, the pin protrusion 36 recovers part of its shape by its own elasticity and locks with the inner wall of the pin hole, thereby forming a reinforcement constraint on the air nozzle 18 from the side to maintain a stable installation state, reduce the risk of loosening and leakage of the air nozzle 18, and ensure the long-term reliable operation of the air expansion shaft air circuit system.

[0032] The external part 15 is also provided with a protective part for protecting the air nozzle 18 when not in use. The protective part includes a sealing cover 31 that is mounted on the external part 15 by means of hinge. The bottom of the sealing cover 31 is designed as an arc-shaped structure that matches the surface of the external part 15. A sealing gasket (not shown in the figure) is provided at the contact position between the arc-shaped structure and the surface of the external part 15 to enhance the sealing effect. At the same time, an arc block 32 is integrally provided on the side of the sealing cover 31. The curvature of the arc block 32 matches the curvature of the surface of the external part 15. Two sets of wing screws 33 are threadedly connected to the arc block 32. Correspondingly, a threaded hole 151 that matches the wing screws 33 is provided on the external part 15.

[0033] When the air nozzle 18 is not in use, the sealing cover 31 can be rotated to cover the recessed groove 152 and the air nozzle 18. At this time, the arc-shaped structure fits the surface of the outer part 15, and the sealing gasket further improves the sealing performance. Then, by tightening the wing screw 33 to let it enter the threaded hole 151, the sealing cover 31 can be firmly locked, thereby effectively preventing dust, oil and other impurities in the workshop environment from contacting the air nozzle 18, avoiding contamination or damage to the air nozzle 18 interface, providing reliable protection when the air nozzle 18 is idle, and the design of the wing screw 33 makes it easy to operate manually and quickly, and the opening, closing and locking of the sealing cover 31 can be completed without the need for additional tools.

[0034] Working principle: When the air nozzle 18 is in use (during inflation / deflation), the sealing cover 31 is opened and fixed by the engagement of the wing screw 33 and the threaded hole 151, preventing interference with the air gun docking. At this time, the recessed groove 152 provides basic protection for the air nozzle 18, reducing the risk of external collisions. When the air nozzle 18 is idle (such as during equipment changeover or downtime), the sealing cover 31 is rotated to cover the recessed groove 152. The arc-shaped structure fits against the surface of the external part 15, and the sealing gasket further prevents dust and oil from entering. It is then locked by the wing screw 33 to form a sealed protective space, preventing contamination or damage to the air nozzle 18 interface. This design does not affect the normal use of the air nozzle 18 and provides comprehensive protection in the non-working state. Combined with the sealing effect of the sealing gasket 154 and the anti-loosening function of the reinforcement 34, the air shaft maintains long-term stable working performance in complex workshop environments, adapting to the insertion and removal requirements of automatic shaft pulling machines.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An automatic air shaft pulling machine for air shafts, characterized in that: include A shaft tube (11) has a shaft head one (13) at one end and a shaft head two at the other end. The shaft head two includes a support part (14) to ensure the rigidity of the shaft head. An external part (15) is fixedly provided at one end of the support part (14). An air nozzle (18) is threaded onto the external part (15). A protective component (3) is provided on the external part (15). The protective component (3) includes a fastening part for reinforcing the installation of the air nozzle (18). The external part (15) is also provided with a protective part for protecting the air nozzle (18) when it is not in use.

2. The air shaft of the automatic air shaft pulling machine according to claim 1, characterized in that: The fastening part includes a reinforcement part (34) sleeved on the air nozzle (18). Two sets of fixing pins (35) are inserted through the reinforcement part (34). The fixing pins (35) have pin protrusions (36) with a structure that is larger at the top and smaller at the bottom. The pin protrusions (36) are made of deformable plastic material and have a certain elasticity and toughness. The external part (15) has corresponding pin holes that are adapted to the pin protrusions (36).

3. The air shaft of the automatic air shaft pulling machine according to claim 1, characterized in that: The protective part includes a sealing cover (31) that is hinged to the outer part (15). The bottom of the sealing cover (31) is designed as an arc-shaped structure that matches the surface of the outer part (15). A sealing gasket is provided at the contact position between the arc-shaped structure and the surface of the outer part (15). An arc block (32) is integrally provided on the side of the sealing cover (31). The curvature of the arc block (32) matches the curvature of the surface of the outer part (15). Two sets of wing screws (33) are threadedly connected to the arc block (32). Correspondingly, the outer part (15) is provided with a threaded hole (151) that matches the wing screw (33).

4. The air shaft of the automatic air shaft pulling machine according to claim 1, characterized in that: One end of the external part (15) is provided with a mounting part (16), the mounting part (16) is provided with a keyway hole (161) and it cooperates with the inner hole at the end of the shaft tube (11). One end of the mounting part (16) is provided with a clamping end (17), the surface of the clamping end (17) has a clamping groove, the clamping groove is an arc groove and is arranged in a ring on the outer circle surface of the clamping end (17), and at least two arc grooves are provided on the outer circle surface of the clamping end (17).

5. The air shaft of the automatic air shaft pulling machine according to claim 4, characterized in that: Air holes (171) are provided in the clamping end (17), the mounting part (16) and the external part (15), and the air holes (171) in the clamping end (17) and the mounting part (16) are interconnected.

6. The air shaft of the automatic air shaft pulling machine according to claim 5, characterized in that: The surface of the external part (15) is provided with a recessed groove (152), and a screw hole (153) is connected to the recessed groove (152). The screw hole (153) is connected to the air hole (171), and the air nozzle (18) is threadedly connected to the screw hole (153) and partially located in the recessed groove (152).

7. The air shaft of the automatic air shaft pulling machine according to claim 6, characterized in that: A sealing gasket (154) is provided at the step position where the sinking groove (152) connects with the screw hole (153).

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