An all-encapsulated collet

Abstract

The utility model discloses a full rubber collet, including the axle body, with the axle body coaxial setting's connecting shaft and with the sidewall of axle body's a plurality of air bag of conformance, air bag's both ends are equipped with air bag edge, air bag edge extends outward, adjacent air bag is pressed down air bag edge through the compression plate, and the both ends fixed connection of both ends of axle body has tail cover and connecting flange, and tail cover and connecting flange press down the air bag edge of adjacent air bag, and axle body is equipped with the gas path, the gas path communicates with air bag, and the surface of axle body is equipped with the air vent and pressure detection cap, and the air vent and pressure detection cap communicate the gas path, improve the friction between with the roll material roll core through the setting of a plurality of air bags, improve the skidding phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of winding equipment, and more specifically, it relates to a fully rubber-coated chuck. Background Technology

[0002] Fully rubber-coated chucks are used at the take-up and unwinding ends of the equipment. The chuck is inserted into the empty cylinder at the center of the roll. By inflating the air bladder in the chuck, the air bladder expands and comes into contact with the inner wall of the roll core. When the chuck is driven, the air bladder drives the roll to rotate through friction.

[0003] The fully rubber-coated chuck allows for sufficient contact with the inner wall of the coil, increasing friction, reducing the pressure applied to the coil, and preventing damage to the coil core. However, single-airbag fully rubber-coated chucks can still slip due to insufficient friction, which not only affects the operation of the production line but also easily causes the airbag to rupture.

[0004] Therefore, this application aims to provide a fully rubber-coated chuck composed of multiple airbags, which increases the friction with the coil core and reduces slippage without damaging the coil core. Utility Model Content

[0005] This invention overcomes the shortcomings of existing single-airbag type fully rubber-coated chucks, which have insufficient friction and are prone to slippage. It provides a fully rubber-coated chuck that increases the friction with the coil core without damaging the coil core, thereby reducing slippage.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A double-joint full-coverage chuck includes a shaft, a connecting shaft coaxially arranged with the shaft, and several airbags that fit against the side wall of the shaft. The airbags have airbag edges at both ends, which extend outward. Adjacent airbags are pressed against each other by a clamping plate. The two ends of the shaft are fixedly connected to a tail cap and a connecting flange, which press against the airbag edges of adjacent airbags. The shaft has an air passage that communicates with the airbags. An air exchange nozzle and a pressure detection cap are provided on the surface of the shaft, and the air exchange nozzle and pressure detection cap are connected to the air passage.

[0008] The various air bladders on the shaft share air pressure through air passages. When airflow is forced into the air passages through the vent nozzles, the internal air pressure increases. The elastic and flexible air bladders then expand and deform under the pressure difference, achieving the shaft expansion function. To increase load capacity and reduce runout, multiple air bladders are used. The edges of each air bladder are pressed and sealed by a clamping plate, end caps, or connecting flanges. The fully rubber-coated clamps of the multiple air bladder structure ensure stable torque transmission and reduce slippage.

[0009] Preferably, the clamping plate includes two clamping halves, which are semi-annular in shape and are clamped to the edge of the airbag by fasteners. The two clamping halves fit together to form a ring, thereby positioning the edge of the airbag.

[0010] Preferably, the shaft body has a positioning groove corresponding to the position of the pressure plate, and the pressure plate has a flange in the middle of its inner wall, which is inserted into the positioning groove. This structure is used to position the pressure plate, thereby controlling the relative position of the pressure plate and the airbag.

[0011] Preferably, the thickness of the airbag edge gradually decreases from the middle to the outer edge, and the inner wall of the pressure plate is inclined from the end to the middle, with higher ends and lower middle. The direction of the thrust generated by the airbag expansion on the pressure plate is approximately orthogonal to the direction of the inner wall of the pressure plate, reducing the magnitude of the generated force.

[0012] Preferably, the top surface of the airbag edge is provided with several protruding sealing strips, and the inner wall of the pressing plate is provided with corresponding sealing grooves, into which the sealing strips are inserted. The cooperation between the sealing strips and the sealing grooves improves airtightness and prevents gas inside the airbag from leaking out from the airbag edge, thus avoiding air leakage.

[0013] Preferably, along the circumferential direction of the airbag, the surface of the airbag is provided with several thickened areas, the thickness of the airbag in the thickened areas is greater than the thickness of the airbag in the non-airbag areas, and the thickened areas are evenly spaced. The thickened areas serve to increase the friction.

[0014] Preferably, the airbag also has a support ring inside, with ventilation holes for air passage. The edge of the airbag extends inward to form a support edge, which supports the support ring. The support ring maintains the shape of the airbag and prevents the airbag from folding or deforming due to the interaction between the roll and the airbag during insertion of the roll.

[0015] Preferably, the pressure testing cap includes a testing housing, a testing piston, and a testing spring. The testing piston is elastically and slidably connected to the testing housing via the testing spring. The testing piston has external air and an air passage on its two sides, respectively. A guide post is provided on the testing piston. When the internal air pressure applied to the testing piston exceeds a threshold, the testing piston displaces against its elastic force, and the guide post extends beyond the testing housing. When the guide post extending beyond the testing housing is detected, air injection into the clamp is stopped to prevent the airbag from rupturing under excessive pressure.

[0016] Preferably, the outer diameter of the tail cap gradually tapers away from the shaft. The conical structure of the tail cap reduces the difficulty of inserting it into the coil and speeds up the feeding efficiency.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] (1) Multiple airbags are set to increase the friction between the airbag and the coil core and improve the slippage phenomenon;

[0019] (2) By adjusting the shape of the airbag, it can better match the positioning structure, making it less prone to air leakage and more efficient in assembly and maintenance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention;

[0021] Figure 2 This is a cross-sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the present invention from another angle;

[0023] In the picture:

[0024] 1. Shaft body; 2. Connecting shaft; 3. Airbag; 4. Tail cover; 5. Connecting flange; 6. Air passage; 7. Air exchange nozzle; 8. Pressure detection cap; 9. Airbag edge; 10. Pressing plate; 11. Pressing half plate; 12. Flange; 13. Positioning groove; 14. Sealing strip; 15. Sealing groove; 16. Thickened area; 17. Support edge; 18. Support ring; 19. Vent hole; 20. Detection housing; 21. Detection piston; 22. Detection spring; 23. Guide column. Detailed Implementation

[0025] The present disclosure will be further described below with reference to the accompanying drawings and embodiments.

[0026] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] In this disclosure, terms such as "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "side," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely relational terms determined for the convenience of describing the structural relationship of the various components or elements in this disclosure, and do not specifically refer to any component or element in this disclosure, nor should they be construed as limiting this disclosure.

[0029] In the present disclosure, terms such as "fixed connection", "connected", "coupled" should be understood in a broad sense, which may mean a fixed connection, an integral connection or a detachable connection; it may be directly connected or indirectly connected through an intermediate medium. For those related scientific research or technical personnel in this field, the specific meaning of the above terms in the present disclosure can be determined according to specific circumstances, and it should not be construed as a limitation to the present disclosure.

[0030] Embodiment:

[0031] A double - linked all - inclusive chuck, as shown in the reference Figure 1 includes a shaft body 1, a connecting shaft 2 coaxially arranged with the shaft body 1, and a plurality of air bags 3 that fit against the side wall of the shaft body 1. Tail caps 4 and connecting flanges 5 are respectively connected to both ends of the shaft body 1, and the connecting flange 5 is connected to the connecting shaft 2 by a fastener at one end away from the shaft body 1. The connecting shaft 2 is connected to external power.

[0032] Along the direction away from the shaft body 1, the outer diameter of the tail cap 4 gradually tapers. The conical structure of the tail cap 4 reduces the difficulty of inserting into the coiled material and speeds up the feeding efficiency. Since the taper of the tail cap 4 is large, it is connected by a method of connecting two blocks with fasteners, thus reducing the processing difficulty.

[0033] As shown in the reference Figure 2 a gas path 6 is provided at the axis of the shaft body 1, and the gas path 6 is connected to the air bags 3. A gas exchange nozzle 7 and a pressure detection cap 8 are provided on the side wall of the shaft body 1, and the gas exchange nozzle 7 and the pressure detection cap 8 are connected to the gas path 6. The gas exchange nozzle 7 is used to introduce or discharge compressed air, and the pressure detection cap 8 is used to monitor the air pressure state in the gas path 6 to prevent the air bags 3 from being over - inflated and burst due to excessive air pressure. The gas exchange nozzle 7, also known as a valve or air nozzle, can be obtained by outsourcing, and its structure is common knowledge in this field, so it will not be specifically described in this application.

[0034] The air bags 3 are coated on the outer surface of the shaft body 1. By actively pulling the air bags 3, the air bags 3 are elastically press - fitted on the side wall of the shaft body 1 through their own elasticity. Air bag edges 9 are provided at both ends of the air bags 3, and the air bag edges 9 extend outwards. Adjacent air bags 3 are pressed against the air bag edges 9 by a pressing plate 10. The tail caps 4 and connecting flanges 5 fixedly connected to both ends of the shaft body 1 also press against the air bag edges 9 of adjacent air bags 3.

[0035] Each airbag 3 on the shaft body 1 shares the air pressure through the air passage 6. When the air passage 6 presses in the air flow through the air change nozzle 7, the air pressure inside the air passage 6 increases. Then, the elastic and flexible airbag 3 expands and deforms under the action of the internal and external air pressure difference to realize the function of the expanding shaft. In order to increase the load and reduce the jitter, multiple airbags 3 are provided. The airbag edges 9 of each airbag 3 are pressed and positioned and sealed through the pressing plate 10 or the end caps 4 or the connecting flanges 5 at both ends. Through the all-plastic jacket chuck with the structure of the multiple airbags 3, the torque can be stably transmitted and the occurrence of the slipping phenomenon can be reduced.

[0036] The multiple airbags 3 press and install the airbag edges 9 between adjacent airbags 3 in the way of the pressing plate 10, and the airbag edges 9 of the head and tail airbags 3 are pressed and installed through the end caps 4 and the connecting flanges 5. The pressing plate 10 includes two pressing half plates 11. The pressing half plates 11 are semi-annular. The two pressing half plates 11 are clamped on the airbag edge 9 through fasteners. The two pressing half plates 11 enclose into a ring to realize the positioning of the airbag edge 9. The shaft body 1 is provided with a positioning groove 13 corresponding to the position of the pressing plate 10. The middle part of the inner wall of the pressing plate 10 is provided with a flange 12, and the flange 12 is inserted into the positioning groove 13. The structure is used to realize the positioning of the pressing plate 10, so as to control the relative positions of the pressing plate 10 and the airbag 3. Along the direction from the middle part to the outer edge of the airbag 3, the thickness of the airbag edge 9 gradually decreases. The inner wall of the pressing plate 10 is inclined from the end to the middle position, high at both ends and low in the middle. The thrust direction of the airbag 3 expanding on the pressing plate 10 is close to being orthogonal to the inner wall direction of the pressing plate 10, reducing the magnitude of the generated component force. The top surface of the airbag edge 9 is provided with a plurality of protruding sealing strips 14, and the inner wall of the pressing plate 10 is provided with corresponding sealing grooves 15, and the sealing strips 14 are inserted into the sealing grooves 15. The airtightness is improved through the cooperation of the sealing strips 14 and the sealing grooves 15, avoiding the gas inside the airbag 3 from discharging from the airbag edge 9 and causing air leakage. Similar to the inner wall structure of the pressing plate 10, the structures of the end cap 4 and the connecting flange 5 for positioning the airbag edge 9 also have inclined inner walls, and the inner walls are also low at the place far from the airbag 3 and high at the place close to the airbag 3, and also have the sealing groove 15 structure.

[0037] Along the circumferential direction of the airbag 3, the surface of the airbag 3 is provided with a plurality of thickening areas 16. The thickness of the airbag 3 at the thickening areas 16 is greater than the thickness of the airbag 3 at the non-airbag 3 areas. The thickening areas 16 are arranged at equal intervals. The thickening areas 16 play the role of friction lines and increase the friction effect. A support ring 18 is also arranged inside the airbag 3. The support ring 18 is provided with vent holes 19 for ventilation. The airbag edge 9 also extends inwards to form a support edge 17, and the support edge 17 supports the support ring 18. The support ring 18 keeps the shape of the airbag 3, avoiding the airbag 3 from folding and deforming due to the interaction between the coil material and the airbag 3 during the process of inserting the coil material.

[0038] See Figure 3As shown, the pressure detection cap 8 includes a detection housing 20, a detection piston 21, and a detection spring 22. The detection piston 21 is elastically and slidably connected to the detection housing 20 via the detection spring 22. The two sides of the detection piston 21 are respectively for external air and the air passage 6. A guide post 23 is provided on the detection piston 21, which is slidably connected to the detection housing 20 and serves to guide the piston. When the internal air pressure applied to the detection piston 21 exceeds a threshold, the detection piston 21 displaces against its elastic force, and the guide post 23 extends beyond the detection housing 20. When the guide post 23 is found to extend beyond the detection housing 20, air injection into the clamp is stopped to prevent the airbag 3 from rupturing under excessive pressure.

[0039] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A full encapsulated collet, characterized by, The device includes a shaft, a connecting shaft coaxially arranged with the shaft, and several airbags that fit against the side wall of the shaft. The airbags have edges at both ends that extend outward. Adjacent airbags are pressed against each other by a clamping plate. The two ends of the shaft are fixedly connected to a tail cap and a connecting flange, which press against the edges of adjacent airbags. The shaft has an air passage that communicates with the airbags. An air exchange nozzle and a pressure detection cap are provided on the surface of the shaft, and the air exchange nozzle and pressure detection cap are connected to the air passage.

2. A full barrel collet chuck according to claim 1, wherein The clamping plate consists of two clamping halves, which are semi-circular in shape and are clamped to the edge of the airbag by fasteners.

3. A full barrel collet chuck according to claim 2, wherein The shaft body has a positioning groove corresponding to the position of the clamping plate, and the middle of the inner wall of the clamping plate has a flange that is inserted into the positioning groove.

4. A full barrel collet chuck according to claim 3, wherein Along the direction from the middle to the outer edge of the airbag, the thickness of the airbag edge gradually decreases, and the inner wall of the pressure plate is inclined from the end to the middle position, with the two ends being higher and the middle being lower.

5. A full barrel collet chuck according to claim 4, wherein The top surface of the airbag edge is provided with several protruding sealing strips, and the inner wall of the pressure plate is provided with corresponding sealing grooves, into which the sealing strips are inserted.

6. A full barrel collet chuck according to claim 1, wherein Along the circumferential direction of the airbag, the surface of the airbag is provided with several thickened areas. The thickness of the airbag in the thickened areas is greater than the thickness of the airbag in the non-airbag areas, and the thickened areas are evenly spaced.

7. The full barrel collet chuck according to claim 1, wherein The airbag also has a support ring inside, with ventilation holes for air passage. The edge of the airbag also extends inward to form a support edge, which supports the support ring.

8. The full barrel collet chuck according to claim 1, wherein The pressure testing cap includes a testing housing, a testing piston, and a testing spring. The testing piston is elastically and slidably connected to the testing housing via the testing spring. The two sides of the testing piston are external air and an air passage, respectively. A guide post is provided on the testing piston. When the internal air pressure applied to the testing piston exceeds the threshold, the testing piston overcomes the elastic force and displaces, and the guide post extends out of the testing housing.

9. A full barrel collet according to any one of claims 1 to 8, wherein, Along the direction away from the shaft, the outer diameter of the tail cap gradually tapers.

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