Pvc heat-shrinkable sleeve facilitating shrinkage setting

Abstract

The utility model provides a kind of pvc heat shrinkable sleeve convenient to contract and shape, it is related to heat shrinkable sleeve technical field, the utility model includes sleeve body, the sleeve body is the tubular structure made of PVC heat shrinkable material, the inner wall of sleeve body is fixedly installed with several annular support ribs, the annular support rib is integrally formed with sleeve body, the contraction guide groove outside the sleeve body of the utility model provides directional guide, cooperates outer wall tightening ring and lug, avoid the wrinkle when shrinking, improve close tightness, inner wall annular support rib provides stable support after shaping, not easy to deform when extrusion, two end flaring block is conveniently sleeved into the wrapped object, inner wall elastic lug adapts different diameter object and improves universality, antiskid coating between adjacent support rib enhances friction, prevents displacement, each component synergistic effect, ensure that it is wrapped stable, strengthen protection effect, improve use reliability.

Description

Technical Field

[0001] This utility model relates to the field of heat shrink tubing technology, and in particular to a PVC heat shrink tubing that is easy to shrink and shape. Background Technology

[0002] PVC heat-shrinkable tubing is a pipe protection material made of polyvinyl chloride. It has heat-shrinkable properties and is commonly used to protect cables, lines, or other equipment. It can shrink tightly after heating and adhere to the surface of the protected object, providing effective insulation, protection, and waterproofing.

[0003] Existing PVC heat shrink tubing typically requires heating to shrink and shape during use. Uneven shrinkage during the shrinkage process can easily occur, leading to wrinkles and poor fit, which affects the protective effect. Furthermore, it lacks structural support after shaping and is easily deformed when subjected to external pressure, making it difficult to maintain a stable wrapping shape. In addition, different specifications of tubing are required for wrapping objects of different diameters or shapes, resulting in poor versatility. Utility Model Content

[0004] The technical problem to be solved by this utility model is that existing PVC heat shrink tubing usually needs to be heated to shrink and shape during use. During the shrinkage process, uneven shrinkage is prone to occur, resulting in wrinkles and loose fit, which affects the protective effect. Moreover, after shaping, it lacks structural support and is easily deformed when subjected to external pressure, making it difficult to maintain a stable wrapping shape. At the same time, different specifications of tubing are required for wrapping objects of different diameters or shapes, resulting in poor versatility.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a PVC heat-shrinkable sleeve that is easy to shrink and shape, including a sleeve body, the sleeve body being a tubular structure made of PVC heat-shrinkable material, a number of annular support ribs being fixedly installed on the inner wall of the sleeve body, the annular support ribs being integrally formed with the sleeve body, and a number of shrinkage guide grooves being opened on the outer surface of the sleeve body, the shrinkage guide grooves penetrating both ends of the sleeve body.

[0006] The effects achieved by the above components are as follows: when the sleeve body is heated and shrunk, the shrinkage guide groove can provide directional guidance for the shrinkage of the sleeve body, avoid uneven local shrinkage during the shrinkage process, reduce wrinkles, improve the tightness of the fit with the wrapped object, and enhance the protective effect. At the same time, the annular support rib can provide structural support for the shaped sleeve body, making it less prone to deformation under external pressure, maintaining a stable wrapping shape, and improving the overall reliability of use.

[0007] Preferably, one end of the longitudinal section of the annular support rib is in the shape of an isosceles trapezoid, and the side of the annular support rib near the end of the sleeve body is an inclined guide surface.

[0008] The effects achieved by the above components are as follows: the inclined guide surface can guide the annular support rib to deform smoothly as the sleeve body shrinks, making the process of the annular support rib fitting with the surface of the wrapped object smoother, avoiding the problem of local wrinkles or loose fit of the sleeve body due to the obstruction of the deformation of the annular support rib, thus improving the fitting effect. At the same time, the isosceles trapezoidal structural design can enhance the structural strength of the annular support rib and improve the support stability of the sleeve body after shaping.

[0009] Preferably, the longitudinal section of the shrinkage guide groove is V-shaped, and the depth of the shrinkage guide groove is half the wall thickness of the sleeve body.

[0010] The effects achieved by the above components are as follows: the V-shaped structure enables the shrinkage guide groove to form a more defined shrinkage stress concentration area during heating, guiding the sleeve body to shrink evenly along the preset direction, effectively reducing local uneven shrinkage. The depth design of half the wall thickness ensures the guiding effect while avoiding the shrinkage guide groove being too deep, which would reduce the structural strength of the sleeve body, thus ensuring that the sleeve body has both good shrinkage shaping effect and structural stability.

[0011] Preferably, flared blocks are fixedly installed at both ends of the sleeve body. The size of the flared block at one end closer to the sleeve body is smaller than that at the other end. The inner wall of the flared block is connected to and smoothly transitions with the inner wall of the sleeve body.

[0012] The effects achieved by the above components are as follows: the larger end opening of the flared block allows the wrapped object to be quickly and easily inserted into the sleeve body, improving the ease of installation; the smooth transition of the inner wall can prevent the wrapped object from being scratched during the insertion process; at the same time, the flared block can structurally reinforce the end of the sleeve body, reducing the possibility of deformation or cracking of the end during the shrinkage and shaping process, and improving the reliability of the end in use.

[0013] Preferably, the inner wall of the flared block is provided with a plurality of radially distributed elastic protrusions, and the elastic protrusions are integrally formed with the flared block.

[0014] The effects achieved by the above components are as follows: when the object being wrapped is inserted, the elastic protrusions can make close contact with the surface of the object being wrapped and generate elastic pressure, which enhances the friction between the flared block and the object being wrapped, prevents the sleeve body from axially shifting during use, and at the same time, the elastic deformation capability of the elastic protrusions allows them to adapt to the surface contour of objects with different diameters, improves the adaptability of the sleeve body to objects with different specifications, and enhances its versatility.

[0015] Preferably, a plurality of tightening rings are fitted on the outer wall of the sleeve body. The tightening rings are elastic metal rings, and a plurality of protrusions are fixedly installed on the inner wall of the tightening rings. The protrusions are inserted into the inner wall of the shrinkage guide groove.

[0016] The effects achieved by the above components are as follows: the elastic force of the tightening ring can assist the shrinkage of the sleeve body, while the cooperation between the protrusion and the shrinkage guide groove can further limit the shrinkage direction of the sleeve body, ensuring uniform shrinkage. After shaping, the tightening ring made of elastic metal ring material can provide additional radial constraint and structural support for the sleeve body, improve the sleeve body's ability to resist external extrusion, maintain a stable wrapping shape, and the cooperation between the protrusion and the shrinkage guide groove can also prevent the tightening ring from shifting on the sleeve body, ensuring stable auxiliary effect.

[0017] Preferably, the inner wall of the sleeve body is coated with an anti-slip coating, which is located between two adjacent annular support ribs.

[0018] The effects achieved by the above components are as follows: the anti-slip coating can enhance the friction between the inner wall of the sleeve body and the surface of the wrapped object, prevent relative sliding between the shaped sleeve body and the wrapped object, and improve the wrapping stability. At the same time, the anti-slip coating is located between adjacent annular support ribs and can cooperate with the annular support ribs. On the basis of the structural support provided by the annular support ribs, the anti-slip coating further improves the tightness of the fit, reduces the generation of gaps, enhances the protective effect, and does not affect the support function of the annular support ribs or the shrinkage deformation of the sleeve body.

[0019] The beneficial effects of this utility model are: The shrinkage guide groove on the outside of the sleeve provides directional guidance, which, together with the tightening ring and protrusions on the outer wall, prevents wrinkles during shrinkage and improves the tightness of the fit. The annular support ribs on the inner wall provide stable support after shaping and are not easily deformed under external pressure. The flared blocks at both ends make it easy to fit the object being wrapped, and the elastic protrusions on the inner wall adapt to objects of different diameters to improve versatility. The anti-slip coating between adjacent support ribs enhances friction and prevents displacement. All components work together to ensure stable wrapping, enhance the protective effect, and improve the reliability of use. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a three-dimensional structural diagram of the sleeve body of this utility model; Figure 3 for Figure 2 A three-dimensional schematic diagram of a local structure; Figure 4 This is a three-dimensional structural diagram of the tightening ring of this utility model; Figure 5 for Figure 4 A three-dimensional schematic diagram of a local structure; Figure 6This is a three-dimensional structural diagram of the flared block of this utility model.

[0023] Legend: 1. Sleeve body; 2. Annular support rib; 3. Shrinkage guide groove; 4. Flaring block; 5. Elastic protrusion; 6. Tightening ring; 7. Protrusion. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Figure 1-6 The illustration shows a PVC heat-shrinkable sleeve that facilitates shrinkage and shaping. It includes a sleeve body 1, a tubular structure made of PVC heat-shrinkable material. Several annular support ribs 2 are fixedly installed on the inner wall of the sleeve body 1, and the annular support ribs 2 are integrally formed with the sleeve body 1. Several shrinkage guide grooves 3 are formed on the outer surface of the sleeve body 1, extending through both ends of the sleeve body 1. When the sleeve body 1 is heated and shrunk, the shrinkage guide grooves 3 provide directional guidance for the shrinkage, preventing uneven shrinkage, reducing wrinkles, improving the tightness of the fit with the wrapped object, and enhancing the protective effect. Simultaneously, the annular support ribs 2 provide structural support for the shaped sleeve body 1, preventing deformation under external pressure, maintaining a stable wrapping shape, and improving overall reliability.

[0027] Figure 1-6The annular support rib 2 shown has an isosceles trapezoidal shape at one end of its longitudinal section, and an inclined guide surface on the side of the annular support rib 2 near the end of the sleeve body 1. The inclined guide surface guides the annular support rib 2 to deform smoothly as the sleeve body 1 contracts, making the contact process between the annular support rib 2 and the surface of the object being wrapped smoother. This avoids problems such as wrinkles or loose contact in the sleeve body 1 due to obstructed deformation of the annular support rib 2, improving the contact effect. Simultaneously, the isosceles trapezoidal structural design enhances the structural strength of the annular support rib 2, improving its support stability for the sleeve body 1 after shaping. The shrinkage guide groove 3 has a V-shaped longitudinal section, and its depth is half the wall thickness of the sleeve body 1. The V-shaped structure enables the shrinkage guide groove 3 to form a more defined shrinkage stress concentration area during heating, guiding the sleeve body 1 to shrink evenly along the preset direction, effectively reducing local uneven shrinkage. The depth design of half the wall thickness ensures the guiding effect while avoiding the shrinkage guide groove 3 from being too deep, which would reduce the structural strength of the sleeve body 1, ensuring that the sleeve body 1 has both good shrinkage shaping effect and structural stability.

[0028] Figure 1-6 The sleeve body 1 shown has flared blocks 4 fixedly installed at both ends. The end of the flared block 4 closest to the sleeve body 1 is smaller than the other end. The inner wall of the flared block 4 is connected to and smoothly transitions with the inner wall of the sleeve body 1. The larger end opening of the flared block 4 allows for easy and quick insertion of the packaged object into the sleeve body 1, improving installation convenience. The smooth transition of the inner wall prevents the packaged object from being scratched during insertion. At the same time, the flared block 4 provides structural reinforcement to the end of the sleeve body 1, reducing the possibility of deformation or cracking during the shrinkage and shaping process, and improving the reliability of the end. The inner wall of the flared block 4 has multiple radially distributed elastic protrusions 5, which are integrally formed with the flared block 4. When the object to be wrapped is inserted, the elastic protrusion 5 can make close contact with the surface of the object to be wrapped and generate elastic pressure, which enhances the friction between the flared block 4 and the object to be wrapped, and prevents the sleeve body 1 from axially shifting during use. At the same time, the elastic deformation capability of the elastic protrusion 5 allows it to adapt to the surface contour of objects to be wrapped with different diameters, improving the adaptability of the sleeve body 1 to objects to be wrapped with different specifications and enhancing its versatility.

[0029] Figure 1-6The outer wall of the sleeve body 1 shown is fitted with several tightening rings 6, which are elastic metal rings. Several protrusions 7 are fixedly installed on the inner wall of the tightening rings 6, and these protrusions 7 are inserted into the inner wall of the shrinkage guide groove 3. The elastic force of the tightening rings 6 assists in the shrinkage of the sleeve body 1. Simultaneously, the cooperation between the protrusions 7 and the shrinkage guide groove 3 further limits the shrinkage direction of the sleeve body 1, ensuring uniform shrinkage. After shaping, the elastic metal ring tightening rings 6 provide additional radial constraint and structural support for the sleeve body 1, enhancing its resistance to external pressure and maintaining a stable wrapping shape. The cooperation between the protrusions 7 and the shrinkage guide groove 3 also prevents the tightening rings 6 from shifting on the sleeve body 1, ensuring a stable auxiliary effect.

[0030] Figure 1-6 The inner wall of the sleeve body 1 shown is coated with an anti-slip coating, which is located between two adjacent annular support ribs 2. The anti-slip coating can enhance the friction between the inner wall of the sleeve body 1 and the surface of the object being wrapped, preventing relative sliding between the shaped sleeve body 1 and the object being wrapped, thus improving the wrapping stability. At the same time, the anti-slip coating is located between adjacent annular support ribs 2 and can cooperate with the annular support ribs 2. On the basis of the structural support provided by the annular support ribs 2, the anti-slip coating further improves the tightness of the fit, reduces the generation of gaps, enhances the protective effect, and does not affect the support function of the annular support ribs 2 or the shrinkage deformation of the sleeve body 1.

[0031] Working principle: When wrapping an object, the flared blocks 4 fixedly installed at both ends of the sleeve body 1 are used to quickly insert the object. The flared block 4 is smaller at one end than the other end, and its inner wall is connected to the inner wall of the sleeve body 1 with a smooth transition, which avoids scratching the object during insertion. At the same time, the elastic protrusions 5 on the inner wall of the flared block 4 contact the surface of the object and generate elastic pressure, enhancing the tightness of the end fit and adapting to objects of different diameters, thus improving versatility. After insertion, the sleeve body 1 is heated. During the heating process, the shrinkage guide groove 3 provides clear directional guidance. The stress concentration area formed by the T-shaped structure can guide the sleeve body 1 to shrink evenly in a preset direction. In conjunction with the tightening ring 6 and the protrusions 7 on the inner wall of the tightening ring 6, the shrinkage direction is further limited to avoid uneven local shrinkage and reduce wrinkles. At the same time, the annular support rib 2 on the inner wall of the sleeve body 1 deforms as the sleeve body 1 shrinks. Its inclined guide surface near the end makes the fitting process smoother. After heating, the sleeve body 1 completes shrinkage and shaping. The annular support rib 2 provides stable structural support for the shaped sleeve body 1, making it less prone to deformation under external pressure. The anti-slip coating between adjacent annular support ribs 2 enhances the friction between the inner wall of the sleeve body 1 and the wrapped object, preventing relative sliding after shaping. Finally, the sleeve body 1 tightly wraps the wrapped object and maintains a stable shape, ensuring the protective effect.

[0032] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A PVC heat-shrinkable sleeve that is easy to shrink and shape, comprising a sleeve body (1), characterized in that: The sleeve body (1) is a tubular structure made of PVC heat shrink material. Several annular support ribs (2) are fixedly installed on the inner wall of the sleeve body (1). The annular support ribs (2) and the sleeve body (1) are integrally formed. Several shrinkage guide grooves (3) are opened on the outer surface of the sleeve body (1). The shrinkage guide grooves (3) penetrate through both ends of the sleeve body (1).

2. The PVC heat-shrinkable sleeve according to claim 1, characterized in that: The longitudinal section of the annular support rib (2) is in the shape of an isosceles trapezoid at one end, and the side of the annular support rib (2) near the end of the sleeve body (1) is an inclined guide surface.

3. The PVC heat-shrinkable sleeve according to claim 1, characterized in that: The longitudinal section of the shrinkage guide groove (3) is V-shaped, and the depth of the shrinkage guide groove (3) is half the wall thickness of the sleeve body (1).

4. The PVC heat-shrinkable sleeve according to claim 1, characterized in that: Both ends of the sleeve body (1) are fixedly installed with flared blocks (4). The size of the flared block (4) at one end closer to the sleeve body (1) is smaller than that at the other end. The inner wall of the flared block (4) is connected to the inner wall of the sleeve body (1) and smoothly transitions.

5. A PVC heat-shrinkable sleeve according to claim 4, characterized in that: The inner wall of the flared block (4) is provided with a plurality of radially distributed elastic protrusions (5), and the elastic protrusions (5) are integrally formed with the flared block (4).

6. The PVC heat-shrinkable sleeve according to claim 1, characterized in that: The outer wall of the sleeve body (1) is fitted with several tightening rings (6), which are elastic metal rings. Several protrusions (7) are fixedly installed on the inner wall of the tightening rings (6), and the protrusions (7) are inserted into the inner wall of the shrinkage guide groove (3).

7. A PVC heat-shrinkable sleeve according to claim 1, characterized in that: The inner wall of the sleeve body (1) is coated with an anti-slip coating, which is located between two adjacent annular support ribs (2).

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