Inflatable shaft

Abstract

The utility model provides an inflatable shaft. The inflatable shaft comprises a body; the air bag is arranged on the circumferential outer side of the body in the axial direction of the body, and the air bag is used for containing air; the outer wall of the air bag is used for expanding outwards in the radial direction to a preset position when the pressure of air in the air bag is increased. And the alarm assembly is connected to the body, the alarm assembly can send out a warning signal, and the alarm assembly is used for sending out the warning signal when the outer wall of the air bag does not expand to the preset position. The inflatable shaft comprises the alarm assembly, the alarm assembly can send out the warning signal when the outer wall of the air bag does not expand to the preset position so as to remind a worker that expansion of the air bag is abnormal, the situation that the inflatable shaft does not successfully support a mandrel of a strip product and the worker does not find the situation in time is avoided, and the safety of the strip product is improved. And the use safety of the inflatable shaft is improved.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to, but are not limited to, the technical field of reeling and unreeling devices, and specifically, to an inflatable shaft. Background Art

[0002] In the production process of strip products, the produced strip products need to be rolled up on the mandrel for transportation and processing in the next process. The inflatable shaft is a special auxiliary shaft used to assist in the winding and unwinding of strip products. After being inflated with high pressure, the inflatable shaft can expand to support the mandrel, that is, winding; after being deflated, the surface part quickly retracts to allow the mandrel on it to be removed, that is, unwinding.

[0003] Whether the inflatable shaft is fully inflated will affect the reliability of the core shaft installation. If the inflatable shaft is not under-inflated, the core shaft may slide or even deviate on the inflatable shaft, which may cause danger.

[0004] In the related art, whether the inflatable shaft is fully inflated is judged only by the user's experience, but the user's experience is irreplaceable and prone to errors.

[0005] Therefore, how to accurately judge whether the inflatable shaft is fully expanded has become a technical problem that needs to be solved urgently. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art, and proposes an inflatable shaft, which can remind the user that the airbag of the inflatable shaft is not fully inflated through an alarm component, thereby solving the error problem caused by relying on experience to judge whether the airbag is fully inflated in the related art.

[0007] In order to achieve the purpose of the utility model, an inflatable shaft is provided, comprising: a body; an airbag, which is arranged on the circumferential outer side of the body along the axial direction of the body, and the airbag is used to contain gas; the outer wall of the airbag is used to expand radially outward to a preset position when the pressure of the gas inside it increases; an alarm component, which is connected to the body and can send out a warning signal. The alarm component is used to send out a warning signal when the outer wall of the airbag has not expanded to the preset position.

[0008] In some embodiments, the alarm component includes: a power supply, a normally open switch and an alarm; the normally open switch is used to disconnect the connection between the power supply and the alarm when the outer wall of the airbag expands to a preset position, and the normally open switch is also used to connect the power supply and the alarm when the outer wall of the airbag has not expanded to the preset position; the alarm is used to issue a warning signal when connected to the power supply.

[0009] In some embodiments, the inflatable shaft also includes a connecting component, which is used to connect the alarm component and the main body; the connecting component includes a bracket and a connector for connecting the main body and the bracket, the bracket is arranged on the outside of the airbag, and the normally open switch is arranged on the bracket.

[0010] In some embodiments, the alarm and the power supply are disposed on a bracket or a connector.

[0011] In some embodiments, a protrusion is also provided on the airbag, and the protrusion is used to move outward or inward as the outer wall of the airbag radially expands outward or contracts inward; the normally open switch is used to contact the protrusion when the outer wall of the airbag expands to a preset position; the normally open switch is used to separate from the protrusion when the outer wall of the airbag has not expanded to the preset position.

[0012] In some embodiments, the alarm includes a buzzer.

[0013] In some embodiments, the balloon is made of an elastic material.

[0014] In some embodiments, the inflatable shaft further includes an inflatable structure, one end of the airbag has an opening, and the inflatable structure is disposed at the opening to provide gas into the airbag.

[0015] In some embodiments, the body is cylindrical in shape.

[0016] In some embodiments, the warning signal includes one or more of the following: sound, color, text.

[0017] The utility model has the following beneficial effects:

[0018] The inflatable shaft of the disclosed embodiment includes an alarm component, which can send a warning signal when the outer wall of the airbag has not expanded to a preset position, so as to remind the staff that the expansion of the airbag is abnormal, thereby avoiding the situation where the inflatable shaft fails to successfully tighten the core shaft of the strip product and the staff fails to discover it in time, thereby improving the safety of the use of the inflatable shaft.

[0019] Other objects and features of the present invention will become clear by reading the specification, claims and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a structural schematic diagram of the inflatable shaft when the airbag of the inflatable shaft according to the embodiment of the utility model has not been inflated to a preset position.

[0022] Figure 2 It is a structural schematic diagram of the inflatable shaft when the airbag of the inflatable shaft according to the embodiment of the utility model is inflated to a preset position.

[0023] Description of main component symbols:

[0024] 100. Ontology;

[0025] 200, airbag; 210, bulge;

[0026] 310, power supply; 320, normally open switch; 330, alarm;

[0027] 410. Bracket; 420. Protective cover. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] Figure 1 It is a structural schematic diagram of the inflatable shaft when the airbag of the inflatable shaft according to the embodiment of the utility model has not been inflated to a preset position. Figure 2 Schematic diagram of the structure of the inflatable shaft when the airbag of the inflatable shaft of the utility model is inflated to a preset position. Figure 1 and Figure 2 The inflatable shaft includes a body 100, an airbag 200 and an alarm component. The body 100 is extended along a preset direction and is used to install the airbag 200 and the alarm component. The shape of the body 100 can be cylindrical.

[0030] The airbag 200 is arranged along the axial direction of the body 100. In other words, the airbag 200 is also extended along a preset direction, which is the same as the extension direction of the body 100. The airbag 200 is arranged on the circumferential outer side of the body 100, and a storage space is formed between the inner wall of the airbag 200 and the outer surface of the body 100. The volume of the storage space can change as the airbag 200 expands or contracts. For example, the volume of the storage space can increase as the airbag 200 expands, and the volume of the storage space can also decrease as the airbag 200 contracts. The airbag 200 is used to accommodate gas, and the gas can change the volume of the above-mentioned storage space. The outer wall of the airbag 200 is used to expand radially outward to a preset position when the pressure of the gas inside it increases. When the outer wall of the airbag 200 expands to the preset position, the purpose of supporting the core shaft of the strip product can be achieved.

[0031] The outer wall of the airbag 200 can also shrink radially inward when the pressure of the gas inside it decreases, resulting in a distance from the preset position. When the outer wall of the airbag 200 is not at the preset position, the strip product sleeved thereon can be removed. The expansion degree of the inflatable shaft can be conveniently adjusted by changing the pressure inside the airbag 200. When it is necessary to move or disassemble the mandrel (not shown in the figure), the gas supply can be stopped and the gas can be quickly discharged through the elasticity of the airbag 200 itself. As the pressure of the gas inside the airbag 200 decreases, the outer wall of the airbag 200 shrinks radially inward.

[0032] The alarm component is connected to the body 100. The alarm component can send a warning signal to remind the staff through the warning signal, wherein the appearance of the warning signal means the appearance of an abnormal situation, and the staff needs to investigate and eliminate the abnormality. The alarm component is used to send a warning signal when the outer wall of the airbag 200 does not expand to the preset position, that is, the present disclosure considers that the outer wall of the airbag 200 does not expand to the preset position is an abnormal situation. When this abnormal situation occurs, it is necessary to send a warning signal through the alarm component to remind the staff. It is understandable that the warning signal issued by the alarm component can not only remind the staff when the inflatable shaft is used to support and fix the strip product but fails (failure means that the outer wall of the airbag 200 does not expand to the preset position), but also remind the staff whether the abnormal situation is successfully resolved when the staff investigates and handles the abnormal situation, or remind the staff when the inflatable shaft leaks during use, or provide staff when the inflatable shaft is changed and exhausted.

[0033] The inflatable shaft of the disclosed embodiment includes an alarm component, which can send a warning signal when the outer wall of the airbag 200 has not expanded to a preset position, so as to remind the staff that the expansion of the airbag 200 is abnormal, thereby avoiding the situation where the inflatable shaft fails to successfully tighten the core shaft of the strip product and the staff fails to discover it in time, thereby improving the safety of the use of the inflatable shaft.

[0034] In some embodiments, the airbag 200 may be sleeved on the circumferential outer side of the body 100 in a cylindrical structure. The two ends of the airbag 200 may be fixedly connected to the body 100 by fasteners, so that the airbag 200 can maintain its axial position unchanged regardless of whether it is expanded or not, and the fasteners also ensure the sealing between the two ends of the airbag 200 and the body 100, so as to ensure that the gas will not leak between the inside and outside of the airbag 200. Among them, the fastener may include an end cap, which is connected to the end of the airbag 200 in an airtight manner (for example, by a seal or a clamp, etc.), and the end cap is fixedly connected to the body 100, thereby realizing the positioning of the end of the airbag 200 in the axial direction of the body 100. A sealing structure, such as a sealing ring or a sealing gasket, may also be provided between the two ends of the airbag and the end cap to enhance the sealing performance. These sealing structures may provide an additional sealing layer between the airbag 200 and the body 100. It is understood that the above-mentioned embodiments of the fasteners are only examples, and they may be constructed in any suitable manner, all within the scope of protection of the present disclosure, and no examples are given here. In other embodiments, the material of the airbag 200 may be selected to be suitable for sealing applications, such as elastic materials such as rubber, silicone rubber, polyurethane, etc., which can provide good sealing when compressed.

[0035] Optionally, in the inflatable shaft of the embodiment of the present application, the diameter of the airbag 200 after expansion can be 3 inches or 6 inches. It can be understood that the specific value of the diameter of the airbag 200 after expansion can also adopt other embodiments, which are not listed here one by one.

[0036] See also Figure 1 The inflatable shaft further includes a connecting component. The connecting component is used to connect the alarm component and the body 100, so that the alarm component is connected to the body 100.

[0037] The connection assembly includes a bracket 410 and a connector (not shown in the figure). The bracket 410 is arranged on the outside of the airbag 200. In order not to affect the airbag 200 supporting the mandrel, the bracket 410 can be arranged near the end of the airbag 200. However, it can be understood by those skilled in the art that the above arrangement is only an example, and the position of the bracket 410 can be appropriately set as needed.

[0038] The connecting member is used to connect the body 100 and the bracket 410, so that there is a gap between the bracket 410 and the airbag 200 to allow the airbag 200 to expand. The connecting member can be a fixing screw or other structure connected by a fixing screw.

[0039] The normally open switch 320 is disposed on the bracket 410 so that the outer wall of the airbag 200 can contact the normally open switch 320 after expansion, ensuring that the alarm component can issue a warning signal in time. Optionally, the normally open switch 320 can be disposed on the side of the bracket 410 facing the airbag 200. The normally open switch 320 can also be disposed on the side of the bracket 410 facing away from the airbag, see Figure 1 and Figure 2 At this time, the bracket 410 is provided with a through hole penetrating its axial thickness so that the airbag 200 can contact the normally open switch 320 after expansion.

[0040] In some embodiments, the alarm 330 may be disposed on the bracket 410. In other embodiments, the alarm 330 may be disposed on the connector. Similarly, in some embodiments, the power supply 310 may be disposed on the bracket 410. In other embodiments, the power supply 310 may be disposed on the connector.

[0041] As a preferred embodiment, the alarm 330 and the power supply 310 can be both arranged on the bracket 410, so that the overall structure of the inflatable shaft is reasonable. In a specific embodiment, the connection component also includes a protective cover 420 connected to the bracket 410, and the protective cover 420 is used to form a receiving cavity between the outer surface of the bracket 410, and the power supply 310, the normally open switch 320 and the alarm 330 are all located in the receiving cavity to protect the alarm component, prevent dust from affecting the movement, and improve the safety of the alarm component.

[0042] See also Figure 1 and Figure 2 The alarm assembly includes a power supply 310, a normally open switch 320, and an alarm 330. The specific embodiment of the power supply 310 can be adaptively selected according to the size of the inflatable shaft. For example, when the diameter of the airbag 200 after expansion is approximately 6 inches, the power supply 310 can be a 9V battery (nominal voltage 9V).

[0043] The normally open switch 320 is used to disconnect the power supply 310 and the alarm 330 when the outer wall of the airbag 200 expands to a preset position. The normally open switch 320 is also used to connect the power supply 310 and the alarm 330 when the outer wall of the airbag 200 does not expand to the preset position.

[0044] It should be noted that the alarm 330 is used to send out a warning signal when connected to the power supply 310. In other words, the normally open switch 320 is used to disconnect the connection between the power supply 310 and the alarm 330 when the outer wall of the airbag 200 expands to a preset position, so that the alarm 330 does not send out a warning signal; the normally open switch 320 is used to connect the power supply 310 and the alarm 330 when the outer wall of the airbag 200 does not expand to the preset position, so that the alarm 330 sends out a warning signal to remind the staff.

[0045] In order to realize the above-mentioned function of the normally open switch 320, the normally open switch 320 can be arranged between the power source 310 and the alarm 330, and the normally open switch 320 can be triggered by the outer wall of the airbag 200. When the normally open switch 320 contacts the outer wall of the airbag 200, the power source 310 and the alarm 330 can be disconnected; when the normally open switch 320 does not contact the outer wall of the airbag 200, the power source 310 and the alarm 330 can be connected.

[0046] The alarm 330 of the disclosed embodiment can send out a warning signal when the outer wall of the airbag 200 has not expanded to a preset position, so as to remind the staff that the expansion of the airbag 200 is abnormal, thereby avoiding the situation where the inflatable shaft fails to successfully tighten the core shaft of the strip product and the staff fails to discover it in time, thereby improving the safety of the use of the inflatable shaft.

[0047] See also Figure 1 , the airbag 200 is also provided with a protrusion 210, and the protrusion 210 is used to move outward or inward together with the radial outward expansion or inward contraction of the outer wall of the airbag 200. The protrusion 210 is provided corresponding to the normally open switch 320. In other words, the normally open switch 320 faces the protrusion 210. The number of the protrusion 210 can be one or more, for example, there can be 4 or 8 protrusions 210. When a plurality of protrusions 210 are provided on the airbag 200, the plurality of protrusions 210 are evenly arranged along the circumferential direction of the airbag 200. In a specific embodiment, when a plurality of protrusions 210 are provided on the outer surface of the airbag 200, the normally open switch 320 only faces one of the protrusions 210. In other embodiments, when a plurality of protrusions 210 are provided on the outer surface of the airbag 200, an equal number of normally open switches 320 corresponding to each other are provided. As long as one normally open switch 320 is not in contact with the corresponding protrusion 210, the alarm 330 will send out a warning signal.

[0048] The normally open switch 320 is used to contact the protrusion 210 when the outer wall of the airbag 200 expands to a preset position, so that the power supply 310 and the alarm 330 are disconnected, and the alarm 330 does not send a warning signal at this time. The normally open switch 320 is used to separate from the protrusion 210 when the outer wall of the airbag 200 does not expand to the preset position, so that the power supply 310 and the alarm 330 are connected, so that the alarm 330 sends a warning signal, thereby alerting the staff. When the normally open switch 320 is separated from the protrusion 210, the upper surface of the protrusion 210 is lower than the lower surface of the normally open switch 320, so as to allow the core shaft of the strip product to slide easily on the inflation shaft, thereby facilitating its installation and removal.

[0049] In some embodiments, the alarm 330 includes a buzzer. In other embodiments, the alarm 330 may also include an indicator light and / or a display.

[0050] In this embodiment, the alarm 330 can send out any one or more combinations of sound alarm, light alarm or text alarm. In a specific embodiment, the alarm mode of the alarm 330 can be selected by the user.

[0051] The airbag 200 may be made of an elastic material. The volume of the airbag 200 may change as the gas is filled in and discharged. For example, the volume of the airbag 200 may increase as the gas is filled in, and the volume of the airbag 200 may decrease as the gas is discharged.

[0052] The inflatable shaft of the disclosed embodiment can provide appropriate tightening force for the core shaft (not shown) of the strip product through the combination of the elastic airbag 200 and the protrusion 210 provided on the airbag 200, without having to worry about the tightening force being too large or too small. When the tightening force is insufficient, that is, the outer wall of the airbag 200 has not expanded to the preset position, the alarm 330 sends a warning signal to remind the staff that the tightening force of the inflatable shaft is insufficient, and the above abnormality can be solved by replenishing gas in the airbag 200. Otherwise, the insufficient tightening force of the inflatable shaft may cause the core shaft to slip or deviate on the inflatable shaft, causing danger.

[0053] The inflatable shaft further includes an inflatable structure. One end of the airbag 200 has an opening, and the inflatable structure is disposed at the opening to provide gas into the airbag 200 .

[0054] In some embodiments, the inflation structure includes at least an air nozzle (not shown) installed at the opening and an inflation tube (not shown) extending from the air nozzle to the inside of the airbag 200. The air nozzle is connected to an air source (not shown) so as to provide air to the airbag 200.

[0055] In some embodiments, the warning signal may include one or more of the following: sound, color, text.

[0056] The following is a specific description of the implementation method of the alarm component sending out a warning signal to alert the staff. It should be understood that it is only for reference and does not limit the present disclosure.

[0057] Example 1

[0058] The warning signal emitted by the alarm component is in the form of sound.

[0059] When the outer wall of the airbag 200 is not expanded to the preset position, the alarm component continues to emit a sound of a predetermined volume to remind the staff that the inflatable shaft is not expanded to the preset position. When the outer wall of the airbag 200 is expanded to the preset position, the alarm component stops emitting the sound to remind the staff that the inflatable shaft is expanded to the preset position.

[0060] At this time, the alarm component may include a buzzer.

[0061] Example 2

[0062] The warning signal issued by the alarm component is reflected in the form of color.

[0063] When the outer wall of the airbag 200 is not inflated to the preset position, the alarm component continues to emit a certain color, such as red, to remind the staff that the inflatable shaft is not inflated to the preset position. When the outer wall of the airbag 200 is inflated to the preset position, the alarm component stops emitting the color, or can also change to other colors to remind the staff that the inflatable shaft is inflated to the preset position.

[0064] At this time, the alarm component may include an indicator light.

[0065] Example 3

[0066] The warning signal sent by the alarm component is in the form of text.

[0067] When the outer wall of the airbag 200 is not inflated to the preset position, the alarm component continues to display a preset text, such as "not inflated to the preset position", to remind the staff that the inflatable shaft is not inflated to the preset position. When the outer wall of the airbag 200 is inflated to the preset position, the alarm component stops sending the preset text, or displays other text, such as "inflated to the preset position", to remind the staff that the inflatable shaft is inflated to the preset position.

[0068] In this case, the alarm component may include a display.

[0069] It is understandable that any two of the above three specific embodiments may be combined, or the above three may be implemented together.

[0070] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0071] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0072] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0073] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0075] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An inflatable shaft, characterized in that: include: ontology; An airbag is arranged on the circumferential outer side of the body along the axial direction of the body, and the airbag is used to contain gas; the outer wall of the airbag is used to expand radially outward to a preset position when the pressure of the gas inside the airbag increases; when the outer wall of the airbag expands to the preset position, it supports the core shaft of the strip; An alarm component is connected to the main body, and the alarm component can send out a warning signal. The alarm component is used to send out the warning signal when the outer wall of the airbag does not expand to the preset position.

2. The inflatable shaft according to claim 1, characterized in that: The alarm component includes: a power supply, a normally open switch and an alarm; The normally open switch is used to disconnect the power supply and the alarm when the outer wall of the airbag expands to the preset position, and the normally open switch is also used to connect the power supply and the alarm when the outer wall of the airbag does not expand to the preset position; The alarm is used to send out the warning signal when connected to the power supply.

3. The inflatable shaft according to claim 2, characterized in that: The inflatable shaft further comprises a connecting assembly, and the connecting assembly is used to connect the alarm assembly and the body; The connecting assembly includes a bracket and a connecting piece for connecting the body and the bracket, the bracket is arranged on the outside of the airbag, and the normally open switch is arranged on the bracket; The airbag is in a cylindrical structure and is sleeved on the circumferential outer side of the body; The support is sleeved on the circumferential outer side of the airbag.

4. The inflatable shaft according to claim 3, characterized in that: The alarm and the power supply are arranged on the bracket or the connecting piece.

5. The inflatable shaft according to claim 2, characterized in that: The airbag is also provided with a protrusion, and the protrusion is used to move outward or inward together with the radial outward expansion or inward contraction of the outer wall of the airbag; The normally open switch is used to contact the protrusion when the outer wall of the airbag expands to the preset position; The normally open switch is used to separate from the protrusion when the outer wall of the airbag has not expanded to the preset position.

6. The inflatable shaft according to claim 2, characterized in that: The alarm includes a buzzer.

7. The inflatable shaft according to claim 1, characterized in that: The airbag is made of elastic material.

8. The inflatable shaft according to claim 1, characterized in that: The inflatable shaft further comprises an inflatable structure. One end of the airbag has an opening. The inflatable structure is arranged at the opening to provide the gas into the airbag.

9. The inflatable shaft according to claim 1, characterized in that: The body is cylindrical in shape.

10. The inflatable shaft according to claim 1, characterized in that: The warning signal includes one or more of the following: sound, color, and text.

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