Inflatable sleeve

Abstract

The air expansion sleeve comprises a first end cover, a second end cover, a wedge sleeve and a wedge block, one end of the wedge sleeve is connected with a sealing section of the second end cover in a sliding mode, a sealing cavity is defined by the wedge sleeve and the second end cover, the wedge sleeve can be driven to slide in a reciprocating mode by changing the volume of the sealing cavity, and the wedge sleeve is provided with a first guide inclined face. The wedge block is provided with a second guide inclined plane matched with the first guide inclined plane, the second guide inclined plane abuts against the first guide inclined plane, along with sliding of the wedge sleeve, the wedge sleeve pushes the wedge block to move through the first guide inclined plane and the second guide inclined plane, and the first end cover and the second end cover are matched to limit the axial position of the wedge block. The wedge blocks can only move in the radial direction, make contact with the paper element and expand the paper element. According to the air expansion sleeve disclosed by the utility model, the sealing cavity can be inflated and deflated to drive the wedge sleeve to slide, so that the wedge block is driven to move along the radial direction to expand the paper core, and the conditions of unstable shearing and coiling tension and swinging of wide and heavy copper strip foils are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rolled copper foil shearing equipment and peripheral supporting facilities thereof, in particular to an air expansion sleeve. Background Art

[0002] The shearing and winding of rolled copper foil generally adopts the form of pneumatic shaft expansion. The paper core specifications are mostly 3 inches or 6 inches. Due to equipment limitations, the mass of a single piece is generally less than 200kg. The current market demand is copper foil of about 0.05mm, and the market requires a single piece weight of more than 500kg. There is currently a winding form in which a curling disk (generally 10-16mm thick) establishes tension through friction. Its structure is mainly to expand the active part on the curling disk through bolts or cam rotation, thereby achieving the expansion of the inner circle of the paper core. However, this structure can only be used for narrow strips, small tension and small roll weight products. If the amplitude is widened and the tension increases, the curling disk will slip relative to the paper core, and the tension will be unstable. Utility Model Content

[0003] The purpose of the utility model is to provide an air expansion sleeve to solve the problems existing in the above-mentioned prior art, so that the air expansion sleeve can adapt to the shearing and rolling of rolled copper foil with various widths and tension ranges, and improve the expansion reliability of the air expansion sleeve on the paper core.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model provides an inflatable sleeve, comprising:

[0006] a first end cap;

[0007] A second end cover, the second end cover can be sleeved on the outside of the transmission shaft so that the transmission shaft drives the second end cover to rotate, the second end cover comprises a transmission section and a sealing section, the transmission section is connected to the sealing section, the second end cover is connected to the transmission section, and the sealing section is arranged at one end of the transmission section away from the first end cover;

[0008] A wedge sleeve, wherein the wedge sleeve is slidably sleeved on the outside of the transmission section, the reciprocating sliding direction of the wedge sleeve is parallel to the axial direction of the wedge sleeve, the second end cover can drive the wedge sleeve to rotate, the sealing section has a sealing groove, one end of the wedge sleeve can slidably extend into the sealing groove and form a sealing cavity with the sealing section, and changing the volume of the sealing cavity can drive the wedge sleeve to reciprocate; the outer peripheral surface of the wedge sleeve has a first guiding inclined surface, and an angle is formed between the first guiding inclined surface and the axis of the wedge sleeve;

[0009] A wedge block, wherein the wedge block is arranged around the wedge sleeve, and the side of the wedge block facing the wedge sleeve has a second guide slope, the second guide slope is against the first guide slope, the reciprocating sliding of the wedge sleeve can push the wedge block to move in a direction perpendicular to the axis of the wedge sleeve, the first end cover cooperates with the second end cover to limit the axial position of the wedge block, the wedge sleeve can drive the wedge block to rotate, and the side of the wedge block away from the wedge sleeve can be against the paper core.

[0010] Preferably, the sealing section is connected with an air nozzle, the air nozzle is in communication with the sealing cavity, and the air nozzle is used to inflate and deflate air into the sealing cavity to drive the wedge block to slide back and forth.

[0011] Preferably, a sealing ring is provided between the wedge sleeve and the sealing section, and the sealing section has a mounting position matching the sealing ring;

[0012] There are multiple sealing rings, all of which are arranged at intervals along the reciprocating sliding direction of the wedge sleeve, and the installation positions correspond to the sealing rings one by one.

[0013] Preferably, the angle between the first guiding inclined surface and the axis of the wedge sleeve is 60°;

[0014] Along the direction from the first end cover to the second end cover, the first guide slope is inclined in a direction gradually away from the axis of the wedge sleeve.

[0015] Preferably, the wedge sleeve has a first guide block on its outer circumferential surface, the first guide bevel is located on the first guide block, the wedge block has a second guide block on the side facing the wedge sleeve, the second guide bevel is located on the second guide block, the first guide block has a guide groove adapted to the second guide block, and the wedge sleeve is slidably connected to the wedge block via the guide groove.

[0016] Preferably, the guide groove is a dovetail groove.

[0017] Preferably, there are a plurality of the first guide blocks, all of which are arranged at intervals along the axial direction of the wedge sleeve, and the first guide blocks correspond to the second guide blocks one by one.

[0018] Preferably, an elastic element is arranged between the first end cover and the axial end surface of the transmission section, and the reciprocating sliding of the wedge sleeve causes the elastic element to be elastically deformed, and the elastic element applies a force to the wedge sleeve to reset the wedge sleeve.

[0019] Preferably, there are multiple wedge blocks, and all of the wedge blocks are evenly distributed around the axis of the wedge sleeve;

[0020] The side of the wedge block away from the wedge sleeve is a curved surface structure.

[0021] Preferably, the second end cover and the first end cover, the sealing section and the wedge sleeve are all connected by splines, and the first end cover is also connected to the second end cover by positioning bolts;

[0022] The first end cover and the second end cover are both made of steel, and the wedge block and the wedge sleeve are both made of nylon.

[0023] Compared with the prior art, the utility model has achieved the following technical effects: the inflatable sleeve of the utility model comprises a first end cover, a second end cover, a wedge sleeve and a wedge block, the second end cover can be sleeved on the outside of the transmission shaft so that the transmission shaft drives the second end cover to rotate, the second end cover comprises a transmission section and a sealing section, the transmission section is connected to the sealing section, the second end cover is connected to the transmission section, and the sealing section is arranged at an end of the transmission section away from the first end cover; the wedge sleeve can be slidably sleeved on the outside of the transmission section, the reciprocating sliding direction of the wedge sleeve is parallel to the axial direction of the wedge sleeve, the second end cover can drive the wedge sleeve to rotate, the sealing section has a sealing groove, and one end of the wedge sleeve The end can be slidably extended into the sealing groove and form a sealing cavity with the sealing section. Changing the volume of the sealing cavity can drive the wedge sleeve to slide back and forth; the outer peripheral surface of the wedge sleeve has a first guide slope, and there is an angle between the first guide slope and the axis of the wedge sleeve; the wedge block is arranged around the wedge sleeve, and the side of the wedge block facing the wedge sleeve has a second guide slope, and the second guide slope is against the first guide slope. The reciprocating sliding of the wedge sleeve can push the wedge block to move in a direction perpendicular to the axis of the wedge sleeve, and the first end cover cooperates with the second end cover to limit the axial position of the wedge block, the wedge sleeve can drive the wedge block to rotate, and the side of the wedge block away from the wedge sleeve can be against the paper core.

[0024] The utility model has an inflatable sleeve, one end of the wedge sleeve is slidably connected to the sealing section of the second end cover, and the wedge sleeve and the second end cover form a sealing cavity, and changing the volume of the sealing cavity can drive the wedge sleeve to slide back and forth, the wedge sleeve has a first guiding slope, and the wedge block has a second guiding slope matched with the first guiding slope, and the second guiding slope abuts against the first guiding slope. As the wedge sleeve slides, the wedge sleeve uses the first guiding slope and the second guiding slope to push the wedge block to move, and the first end cover cooperates with the second end cover to limit the axial position of the wedge block, so that the wedge block can only move in the radial direction, and the wedge block contacts with the paper core and expands the paper core; at the same time, the second end cover can drive the first end cover, the wedge sleeve and the wedge block to rotate, thereby ensuring the smooth winding and unwinding. The air expansion sleeve of the utility model can inflate and release air into the sealing cavity to drive the wedge sleeve to slide, thereby driving the wedge block to move radially and expand the paper core, thereby effectively solving the problem of unstable tension and swinging in the shearing and winding of wide and heavy copper foil strips, improving the adaptability of the air expansion sleeve to the winding of copper foil strips of various specifications, and ensuring the reliability of shearing and winding of calendered copper foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a cross-sectional schematic diagram of the inflatable sleeve disclosed in the embodiment of the utility model;

[0027] Figure 2 It is an enlarged schematic diagram of a part of the structure of the inflatable sleeve disclosed in the embodiment of the utility model;

[0028] Figure 3 It is a structural schematic diagram of a wedge sleeve of an inflatable sleeve disclosed in an embodiment of the utility model;

[0029] Figure 4 It is a front view schematic diagram of the first end cover of the inflatable sleeve disclosed in the embodiment of the utility model;

[0030] Figure 5 A side view schematic diagram of a first end cover of the inflatable sleeve disclosed in an embodiment of the utility model;

[0031] Figure 6 A schematic front view of the second end cover of the inflatable sleeve disclosed in an embodiment of the utility model;

[0032] Figure 7 A side view schematic diagram of the second end cover of the inflatable sleeve disclosed in an embodiment of the utility model;

[0033] Figure 8 It is a front view schematic diagram of a wedge block of an inflatable sleeve disclosed in an embodiment of the utility model;

[0034] Fig. 9 It is a side view schematic diagram of the wedge block of the inflatable sleeve disclosed in the embodiment of the utility model.

[0035] In the figure: 1. first end cover; 2. second end cover; 201. transmission section; 202. sealing section; 3. wedge sleeve; 301. first guide slope; 4. wedge block; 401. second guide slope; 5. sealing cavity; 6. air nozzle; 7. sealing ring; 8. elastic element; 9. positioning bolt. DETAILED DESCRIPTION

[0036] 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.

[0037] The purpose of the utility model is to provide an air expansion sleeve to solve the problems existing in the above-mentioned prior art, so that the air expansion sleeve can adapt to the shearing and rolling of rolled copper foil with various widths and tension ranges, and improve the expansion reliability of the air expansion sleeve on the paper core.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0039] The utility model provides an inflatable sleeve, comprising a first end cover 1, a second end cover 2, a wedge sleeve 3 and a wedge block 4. The second end cover 2 can be sleeved on the outside of a transmission shaft so that the transmission shaft drives the second end cover 2 to rotate. The second end cover 2 comprises a transmission section 201 and a sealing section 202. The transmission section 201 is connected to the sealing section 202. The second end cover 2 is connected to the transmission section 201. The sealing section 202 is arranged at an end of the transmission section 201 away from the first end cover 1. The wedge sleeve 3 can be slidably sleeved on the outside of the transmission section 201. The reciprocating sliding direction of the wedge sleeve 3 is parallel to the axial direction of the wedge sleeve 3. The second end cover 2 can drive the wedge sleeve 3 to rotate. The sealing section 202 has a sealing groove. One end of the wedge sleeve 3 can be slidably extended into the sealing groove. A sealing cavity 5 is formed in the sealing groove and together with the sealing section 202, and changing the volume of the sealing cavity 5 can drive the wedge sleeve 3 to slide back and forth; the outer peripheral surface of the wedge sleeve 3 has a first guiding bevel 301, and an angle is formed between the first guiding bevel 301 and the axis of the wedge sleeve 3; the wedge block 4 is arranged around the wedge sleeve 3, and the side of the wedge block 4 facing the wedge sleeve 3 has a second guiding bevel 401, and the second guiding bevel 401 abuts against the first guiding bevel 301. The reciprocating sliding of the wedge sleeve 3 can push the wedge block 4 to move in a direction perpendicular to the axis of the wedge sleeve 3, and the first end cover 1 cooperates with the second end cover 2 to limit the axial position of the wedge block 4, the wedge sleeve 3 can drive the wedge block 4 to rotate, and the side of the wedge block 4 away from the wedge sleeve 3 can abut against the paper core.

[0040] In the inflatable sleeve of the utility model, one end of the wedge sleeve 3 is slidably connected with the sealing section 202 of the second end cover 2, and the wedge sleeve 3 and the second end cover 2 form a sealing cavity 5, and changing the volume of the sealing cavity 5 can drive the wedge sleeve 3 to slide back and forth, the wedge sleeve 3 has a first guide bevel 301, and the wedge block 4 has a second guide bevel 401 adapted to the first guide bevel 301, and the second guide bevel 401 abuts against the first guide bevel 301. As the wedge sleeve 3 slides, the wedge sleeve 3 uses the first guide bevel 301 and the second guide bevel 401 to push the wedge block 4 to move, and the first end cover 1 cooperates with the second end cover 2 to limit the axial position of the wedge block 4, so that the wedge block 4 can only move in the radial direction, and the wedge block 4 contacts with the paper core and expands the paper core; at the same time, the second end cover 2 can drive the first end cover 1, the wedge sleeve 3 and the wedge block 4 to rotate, thereby ensuring the smooth winding and unwinding. The air expansion sleeve of the utility model can inflate and release air into the sealing cavity 5 to drive the wedge sleeve 3 to slide, and then drive the wedge block 4 to move radially to expand the paper core, thereby effectively solving the problem of unstable tension and swinging in the shearing and winding of wide and heavy copper foils, improving the adaptability of the air expansion sleeve to the winding of copper foils of various specifications, and ensuring the reliability of shearing and winding of calendered copper foil.

[0041] It needs to be explained here that the rolled copper foil is wound on a paper core, and the air expansion sleeve inflates the paper core to drive the rolled copper foil coil to rotate and unwind. Using the paper core to wind and unwind the coil is a common method used by technicians in this field and will not be described in detail here.

[0042] In order to facilitate the inflation and deflation operations in the sealing cavity 5, the sealing section 202 is connected with a gas nozzle 6, which is connected to the sealing cavity 5. The gas nozzle 6 is used to inflate and deflate the sealing cavity 5 to drive the wedge block 4 to slide back and forth. Please refer to Figure 1 and Figure 2 When air is inflated into the sealing cavity 5, the right end face of the wedge sleeve 3 is forced to move to the left, driving the wedge block 4 to move upward, thereby expanding the diameter; similarly, when air is released using the air nozzle 6, the wedge sleeve 3 moves forward under the action of the pressure difference, and the wedge block 4 moves downward, thereby reducing the diameter.

[0043] In order to ensure the sealing performance of the sealing cavity 5 , a sealing ring 7 is provided between the wedge sleeve 3 and the sealing section 202 to prevent leakage of the sealing cavity 5 . The sealing section 202 has an installation position matching the sealing ring 7 to provide installation positioning for the sealing ring 7 .

[0044] In practical applications, the number of sealing rings 7 can be set to multiple, and all sealing rings 7 are arranged at intervals along the reciprocating sliding direction of the wedge sleeve 3. The installation positions correspond to the sealing rings 7 one by one, further ensuring the sealing performance of the sealing cavity 5 and improving the working reliability of the inflatable sleeve.

[0045] In this specific embodiment, the angle between the first guide slope 301 and the axis of the wedge sleeve 3 is 60°. In practical applications, the inclination angle of the first guide slope 301 can also be adjusted according to the requirements of winding and unwinding or the specifications of the paper core, so as to meet different working conditions. In this specific embodiment, along the direction from the first end cover 1 to the second end cover 2, the first guide slope 301 is inclined in a direction gradually away from the axis of the wedge sleeve 3, so that when the sealing cavity 5 is inflated, the wedge sleeve 3 moves to the left. In practical applications, it can also be adjusted to improve the flexibility and adaptability of the inflatable sleeve.

[0046] Specifically, the outer peripheral surface of the wedge sleeve 3 is provided with a first guide block, the first guide bevel 301 is located on the first guide block, the wedge block 4 is provided with a second guide block on the side facing the wedge sleeve 3, the second guide bevel 401 is located on the second guide block, the first guide block has a guide groove adapted to the second guide block, the wedge sleeve 3 is slidably connected to the wedge block 4 by means of the guide groove, and the guide groove is used to cooperate with the second guide block to further improve the reciprocating motion accuracy of the wedge block 4 and avoid misalignment of the wedge block 4, while also ensuring that the wedge sleeve 3 drives the wedge block 4 to rotate.

[0047] In this specific embodiment, the guide groove is a dovetail groove, which prevents the second guide block from falling out of the guide groove, ensures that the first guide slope 301 and the second guide slope 401 always abut against each other, and further improves the reciprocating motion reliability of the wedge block 4.

[0048] In actual applications, the number of first guide blocks can be set to multiple, and all the first guide blocks are arranged at intervals along the axial direction of the wedge sleeve 3. The first guide blocks correspond to the second guide blocks one by one. Arranging multiple groups of first guide blocks and second guide blocks is beneficial to improving the force uniformity of the wedge sleeve 3 and the wedge block 4, enhancing the structural strength of the inflatable sleeve, and extending the service life of the inflatable sleeve.

[0049] It should also be emphasized that an elastic element 8 is arranged between the first end cover 1 and the axial end face of the transmission section 201. The reciprocating sliding of the wedge sleeve 3 causes the elastic element 8 to produce elastic deformation, and the elastic element 8 applies a force to the wedge sleeve 3 to reset the wedge sleeve 3. The elastic element 8 is arranged between the first end cover 1 and the axial end face of the transmission section 201 to ensure the smooth resetting of the wedge sleeve 3 and the shrinkage of the gas expansion sleeve. The elastic element 8 can be a spring. In practical applications, a positioning hole matching the first elastic element 8 can be arranged on the first end cover 1 to avoid the misalignment of the elastic element 8 and ensure that the wedge sleeve 3 is smoothly reset under the force of the elastic element 8 to restore the deformation.

[0050] In addition, the number of wedge blocks 4 can be set to be multiple, and all wedge blocks 4 are evenly distributed around the axis of the wedge sleeve 3 to improve the force uniformity of the paper core and further ensure the reliability of shearing and winding of the rolled copper foil.

[0051] More specifically, the side of the wedge block 4 away from the wedge sleeve 3 is an arc surface structure, so that the wedge block 4 can better contact with the inner hole of the paper core and enhance the expansion effect.

[0052] In other specific embodiments of the utility model, the second end cover 2 and the first end cover 1, the sealing section 202 and the wedge sleeve 3 are all connected by splines to ensure smooth transmission of power. The first end cover 1 is also connected to the second end cover 2 by positioning bolts 9 to further improve the structural integrity and movement stability of the inflatable sleeve.

[0053] It should also be noted that the first end cover 1 and the second end cover 2 are both made of steel to enhance the structural strength of the gas expansion sleeve, and the wedge block 4 and the wedge sleeve 3 are both made of nylon to prevent the gas expansion sleeve from causing wear on the transmission shaft.

[0054] In the pneumatic sleeve of the utility model, the wedge sleeve 3 utilizes the first guiding inclined surface 301 to cooperate with the second guiding inclined surface 401 of the wedge block 4 to drive the wedge block 4 to move radially, which effectively improves the situation in which the winding tension is unstable due to the different lengths of the strips caused by the version when the copper foil is sheared, and also solves the problem of relative slippage between the heavy roll paper core and the existing expansion and contraction disk when wide-width shearing. The pneumatic sleeve realizes the expansion and contraction of the wedge block 4 by inflation and deflation, which is easy to operate and reduces the labor burden of the operator.

[0055] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An inflatable sleeve, characterized in that: include: a first end cap; A second end cover, the second end cover can be sleeved on the outside of the transmission shaft so that the transmission shaft drives the second end cover to rotate, the second end cover comprises a transmission section and a sealing section, the transmission section is connected to the sealing section, the second end cover is connected to the transmission section, and the sealing section is arranged at one end of the transmission section away from the first end cover; A wedge sleeve, wherein the wedge sleeve is slidably sleeved on the outside of the transmission section, the reciprocating sliding direction of the wedge sleeve is parallel to the axial direction of the wedge sleeve, the second end cover can drive the wedge sleeve to rotate, the sealing section has a sealing groove, one end of the wedge sleeve can slidably extend into the sealing groove and form a sealing cavity with the sealing section, and changing the volume of the sealing cavity can drive the wedge sleeve to reciprocate; the outer peripheral surface of the wedge sleeve has a first guiding inclined surface, and an angle is formed between the first guiding inclined surface and the axis of the wedge sleeve; A wedge block, wherein the wedge block is arranged around the wedge sleeve, and the side of the wedge block facing the wedge sleeve has a second guide slope, the second guide slope is against the first guide slope, the reciprocating sliding of the wedge sleeve can push the wedge block to move in a direction perpendicular to the axis of the wedge sleeve, the first end cover cooperates with the second end cover to limit the axial position of the wedge block, the wedge sleeve can drive the wedge block to rotate, and the side of the wedge block away from the wedge sleeve can be against the paper core.

2. The inflatable sleeve according to claim 1, characterized in that: The sealing section is connected with an air nozzle, which is in communication with the sealing cavity. The air nozzle is used to inflate and deflate air into the sealing cavity to drive the wedge block to slide back and forth.

3. The inflatable sleeve according to claim 1, characterized in that: A sealing ring is arranged between the wedge sleeve and the sealing section, and the sealing section has an installation position matching the sealing ring; There are multiple sealing rings, all of which are arranged at intervals along the reciprocating sliding direction of the wedge sleeve, and the installation positions correspond to the sealing rings one by one.

4. The inflatable sleeve according to claim 1, characterized in that: The angle between the first guiding inclined surface and the axis of the wedge sleeve is 60°; Along the direction from the first end cover to the second end cover, the first guide slope is inclined in a direction gradually away from the axis of the wedge sleeve.

5. The inflatable sleeve according to claim 1, characterized in that: The outer circumferential surface of the wedge sleeve is provided with a first guide block, the first guide slope is located on the first guide block, the side of the wedge block facing the wedge sleeve is provided with a second guide block, the second guide slope is located on the second guide block, the first guide block has a guide groove adapted to the second guide block, and the wedge sleeve is slidably connected to the wedge block via the guide groove.

6. The inflatable sleeve according to claim 5, characterized in that: The guide groove is a dovetail groove.

7. The inflatable sleeve according to claim 5, characterized in that: There are multiple first guide blocks, all of which are arranged at intervals along the axial direction of the wedge sleeve, and the first guide blocks correspond to the second guide blocks one by one.

8. The inflatable sleeve according to any one of claims 1 to 7, characterized in that: An elastic element is arranged between the first end cover and the axial end surface of the transmission section. The reciprocating sliding of the wedge sleeve causes the elastic element to be elastically deformed. The elastic element applies a force to the wedge sleeve to reset the wedge sleeve.

9. The inflatable sleeve according to any one of claims 1 to 7, characterized in that: The number of the wedge blocks is multiple, and all the wedge blocks are evenly distributed around the axis of the wedge sleeve; The side of the wedge block away from the wedge sleeve is a curved surface structure.

10. The inflatable sleeve according to any one of claims 1 to 7, characterized in that: The second end cover and the first end cover, the sealing section and the wedge sleeve are all connected by splines, and the first end cover is also connected to the second end cover by positioning bolts; The first end cover and the second end cover are both made of steel, and the wedge block and the wedge sleeve are both made of nylon.

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