Thermal shrinkage tuyere
By designing the flow collector and diffuser structure of the heat shrink nozzle, uniform heating of the heat shrink tubing was achieved, solving the problem of uneven heating in the existing technology and improving the heat shrinking efficiency and quality.
Patent Information
- Application Number
- CN202423263282.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-27
AI Technical Summary
The existing hot air gun nozzles heat the heat shrink tubing unevenly, resulting in low heat shrinking efficiency and wasted heat.
A heat shrinkable nozzle is designed, including a manifold, first and second diffusers, forming a heat shrinkable channel. High-temperature airflow enters the distribution cavity through the manifold and is evenly distributed through the diffuser holes, thereby achieving heating of the heat shrinkable sleeve from multiple directions.
It achieves uniform heating of heat shrink tubing, improves heat shrinking efficiency and quality, saves manpower, and reduces heat waste.
Smart Images
Figure CN223822182U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat shrink equipment technology, and in particular to a heat shrink nozzle. Background Technology
[0002] In some electronic devices, heat shrink tubing is often used to heat shrink and wrap wire harnesses. The specific wrapping process is as follows: the heat shrink tubing is placed on the wire harness that needs to be bundled, and then hot air is blown onto the heat shrink tubing with a heat gun to heat the heat shrink tubing at a high temperature, so that the heat shrink tubing deforms and shrinks after being heated, thereby completing the wrapping and bundling of the wire harness.
[0003] To improve the heating speed and effect of a hot air gun on heat shrink tubing, a matching nozzle needs to be installed on the hot air gun to guide the hot air at the outlet. However, commonly used hot air gun nozzles have poor hot air guiding effect, failing to heat the heat shrink tubing evenly and stably from all directions. This reduces the heat shrinking efficiency of the tubing and results in significant heat waste. Utility Model Content
[0004] The purpose of this invention is to provide a heat shrink nozzle that can uniformly and stably heat heat shrink tubing at high temperatures.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] This utility model provides a heat shrink nozzle, comprising:
[0007] A flow collector has a flow collecting cavity. When the flow collector is connected to a hot air gun, the flow collecting cavity is connected to the air outlet of the hot air gun.
[0008] A first diffuser is connected to the collector seat. The first diffuser has a first distribution cavity communicating with the collector cavity and a first diffuser hole communicating with the first distribution cavity.
[0009] The second diffuser is connected to the collector seat. The second diffuser has a second distribution cavity communicating with the collector cavity and a second diffuser hole communicating with the second distribution cavity. A heat-shrinkable channel for accommodating a heat-shrinkable sleeve is formed between the first diffuser and the second diffuser. The first distribution cavity is connected to the heat-shrinkable channel through the first diffuser hole, and the second distribution cavity is connected to the heat-shrinkable channel through the second diffuser hole.
[0010] Preferably, the first diffuser and the second diffuser are arranged symmetrically with respect to the collector.
[0011] Preferably, the first diffuser is provided with a first blowing surface, and the first diffuser hole has a plurality of first diffuser holes, which are evenly distributed on the first blowing surface.
[0012] The second diffuser is provided with a second blowing surface, and the second diffuser has multiple diffuser holes, which are evenly distributed on the second blowing surface.
[0013] Preferably, the first blowing surface includes a first surface and a second surface joined at an angle, wherein the axis of the first diffuser hole on the first surface is the first axis, and the axis of the first diffuser hole on the second surface is the second axis.
[0014] The second blowing surface includes a third surface and a fourth surface joined at an angle, wherein the axis of the second diffuser hole on the third surface is the third axis, and the axis of the second diffuser hole on the fourth surface is the fourth axis.
[0015] When the heat shrink tubing is placed in the heat shrink channel, the first axis, the second axis, the third axis, and the fourth axis all intersect with the heat shrink tubing.
[0016] Preferably, both the first blowing surface and the second blowing surface are arc-shaped surfaces, the axis of the circumferential surface corresponding to the first blowing surface is the first center line, and the axis of the circumferential surface corresponding to the second blowing surface is the second center line;
[0017] The first center line is located on the side of the first blowing surface away from the first distribution cavity, and the second center line is located on the side of the second blowing surface away from the second distribution cavity.
[0018] Preferably, the heat shrink nozzle further includes a base, one end of which is connected to the end of the first diffuser that is away from the collector, and the other end of which is connected to the end of the second diffuser that is away from the collector. The base, the first diffuser, the second diffuser, and the collector together form the heat shrink channel.
[0019] Preferably, the base has a rectifier cavity, and the two ends of the rectifier cavity are respectively connected to the first distribution cavity and the second distribution cavity;
[0020] The base is provided with an underflow hole, and the rectifier cavity is connected to the heat shrink channel through the underflow hole.
[0021] Preferably, the base is provided with a bottom blowing surface, and the bottom flow holes are multiple and evenly distributed on the bottom blowing surface.
[0022] Preferably, the bottom blowing surface is an arc-shaped surface, and the axis of the circumferential surface corresponding to the bottom blowing surface is the bottom axis, which is located on the side of the bottom blowing surface away from the rectifier cavity.
[0023] Preferably, the flow collection cavity is provided with a flow-dividing protrusion, the flow-dividing protrusion is connected to the flow collection seat, the flow-dividing protrusion has a flow-dividing arc surface, and the vertex of the flow-dividing arc surface is set opposite to the air outlet of the hot air gun.
[0024] The flow-dividing arc surface divides the outlet of the flow-collecting cavity into a first flow-guiding channel and a second flow-guiding channel. The flow-collecting cavity is connected to the first distribution cavity through the first flow-guiding channel, and the flow-collecting cavity is connected to the second distribution cavity through the second flow-guiding channel.
[0025] The beneficial effects of this utility model are as follows:
[0026] The heat shrink nozzle provided by this utility model includes a manifold base and a first diffuser and a second diffuser respectively connected to the manifold base. When the manifold base is connected to a hot air gun, the manifold cavity of the manifold base is connected to the air outlet of the hot air gun. Since the first distribution cavity of the first diffuser and the second distribution cavity of the second diffuser are both connected to the manifold cavity, when the hot air gun is started, the high-temperature airflow can enter the first distribution cavity and the second distribution cavity through the manifold cavity. Since the first diffuser has a first diffuser hole and the second diffuser has a second diffuser hole, the first distribution cavity is connected to the heat shrink channel and the second distribution cavity through the first diffuser hole. The heat shrink nozzle is connected to the heat shrink channel through the second diffuser hole, so it can heat the heat shrink tubing placed in the heat shrink channel with high-temperature air to achieve heat shrinking of the heat shrink tubing. Since the heat shrink channel is located between the first diffuser and the second diffuser, the heat shrink nozzle can blow high-temperature airflow to the heat shrink tubing in the heat shrink channel from different directions. The high-temperature airflow forms a vortex that carries the heat shrink tubing to prevent it from shaking. At the same time, the operator does not need to frequently turn the hot air gun or the heat shrink tubing so that the heat shrink tubing can be heated evenly from different directions, saving manpower and greatly improving heat shrinking efficiency and quality. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of the heat shrink nozzle provided in Embodiment 1 of this utility model;
[0028] Figure 2 This is an isometric sectional view of the heat shrink nozzle provided in Embodiment 1 of this utility model;
[0029] Figure 3 This is a planar sectional view of the heat shrink nozzle provided in Embodiment 1 of this utility model;
[0030] Figure 4 This is a planar sectional view of the heat shrink nozzle provided in Embodiment 2 of this utility model;
[0031] Figure 5 This is a schematic diagram of the structure of the heat shrink nozzle provided in Embodiment 3 of this utility model;
[0032] Figure 6 This is an axial sectional view of the heat shrink nozzle provided in Embodiment 3 of this utility model;
[0033] Figure 7 This is a planar sectional view of the heat shrink nozzle provided in Embodiment 3 of this utility model;
[0034] Figure 8 This is a planar sectional view of the heat shrink nozzle provided in Embodiment 4 of this utility model.
[0035] In the picture:
[0036] 1-Current collector; 11-Current collector cavity; 12-Diverter protrusion; 121-First guide channel; 122-Second guide channel;
[0037] 2-First diffuser; 21-First distribution cavity; 22-First diffuser hole; 23-First blowing surface; 231-First surface; 232-Second surface;
[0038] 3-Second diffuser; 31-Second distribution cavity; 32-Second diffuser hole; 33-Second blowing surface; 331-Third surface; 332-Fourth surface;
[0039] 4-Heat shrink tunnel;
[0040] 5-Base; 51-Rectifying cavity; 52-Bottom blowing surface; 521-Bottom flow hole. Detailed Implementation
[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0042] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0044] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0045] Example 1
[0046] like Figures 1 to 3 As shown, this utility model provides a heat shrinkable nozzle, which includes a manifold 1, a first diffuser 2, and a second diffuser 3. The manifold 1 has a manifold cavity 11, which is connected to the air outlet of the hot air gun when the manifold 1 is connected to the hot air gun. The first diffuser 2 is connected to the manifold 1 and has a first distribution cavity 21 connected to the manifold cavity 11 and a first diffuser hole 22 connected to the first distribution cavity 21. The second diffuser 3 is connected to the manifold 1 and has a second distribution cavity 31 connected to the manifold cavity 11 and a second diffuser hole 32 connected to the second distribution cavity 31. A heat shrinkable channel 4 for accommodating a heat shrinkable sleeve is formed between the first diffuser 2 and the second diffuser 3. The first distribution cavity 21 is connected to the heat shrinkable channel 4 through the first diffuser hole 22, and the second distribution cavity 31 is connected to the heat shrinkable channel 4 through the second diffuser hole 32.
[0047] In this embodiment, when the collector 1 is connected to the hot air gun, the collecting cavity 11 of the collector 1 is connected to the air outlet of the hot air gun. Since the first distribution cavity 21 of the first diffuser 2 and the second distribution cavity 31 of the second diffuser 3 are both connected to the collecting cavity 11, when the hot air gun is started, the high-temperature airflow can enter the first distribution cavity 21 and the second distribution cavity 31 through the collecting cavity 11. Since the first diffuser 2 has a first diffuser hole 22 and the second diffuser 3 has a second diffuser hole 32, the first distribution cavity 21 is connected to the heat shrink channel 4 through the first diffuser hole 22. The second distribution cavity 31 is connected to the heat shrink channel 4 through the second diffuser hole 32. Therefore, the heat shrink nozzle can heat the heat shrink sleeve placed in the heat shrink channel 4 at high temperature to achieve heat shrinking of the heat shrink sleeve. Since the heat shrink channel 4 is located between the first diffuser 2 and the second diffuser 3, the heat shrink nozzle can blow high-temperature airflow to the heat shrink sleeve in the heat shrink channel 4 from different directions. The operator does not need to frequently turn the hot air gun or the heat shrink sleeve to make the heat shrink sleeve be heated evenly from different directions, saving manpower and greatly improving the heat shrinking efficiency and heat shrinking quality.
[0048] Specifically, such as Figure 1 As shown, the first diffuser 2 and the second diffuser 3 are respectively connected to the collector 1, and a heat shrink channel 4 with three sides sealed is formed between the first diffuser 2, the second diffuser 3 and the collector 1.
[0049] Furthermore, such as Figure 3 As shown, in order to further improve the uniformity of heating the heat shrink tubing in the heat shrink channel 4, the first diffuser 2 and the second diffuser 3 are symmetrically arranged relative to the collector 1. It can be understood that when the collector 1 is connected to the hot air gun, the first diffuser 2 and the second diffuser 3 are symmetrical about the air outlet of the hot air gun, and the first diffuser hole 22 and the second diffuser hole 32 are symmetrically arranged on both sides of the heat shrink channel 4. The high-temperature airflow from the hot air gun flows evenly into the first distribution cavity 21 and the second distribution cavity 31, and flows out through the first diffuser hole 22 and the second diffuser hole 32 respectively, thereby uniformly heating the heat shrink tubing in the heat shrink channel 4.
[0050] Specifically, such as Figure 1 and Figure 2 As shown, the first diffuser 2 is provided with a first blowing surface 23, and has multiple first diffuser holes 22, which are evenly distributed on the first blowing surface 23. The second diffuser 3 is provided with a second blowing surface 33, and has multiple second diffuser holes 32, which are evenly distributed on the second blowing surface 33, thereby ensuring the heating efficiency of the heat shrink tubing and the uniformity of heating throughout the heat shrink tubing. It can be understood that the first blowing surface 23 is the surface of the first diffuser 2 facing the heat shrink channel 4, and the second blowing surface 33 is the surface of the second diffuser 3 facing the heat shrink channel 4.
[0051] To avoid wasting heat and to accelerate the heating rate of the heat shrink tubing, such as Figure 1 and Figure 2 As shown, both the first blowing surface 23 and the second blowing surface 33 are arc-shaped surfaces. The axis of the circumferential surface corresponding to the first blowing surface 23 is the first center line, and the axis of the circumferential surface corresponding to the second blowing surface 33 is the second center line. The first center line is located on the side of the first blowing surface 23 away from the first distribution cavity 21, and the second center line is located on the side of the second blowing surface 33 away from the second distribution cavity 31. For example, both the first centerline and the second centerline are located in the heat shrink channel 4. Since the first blowing surface 23 is an arc-shaped surface and the first centerline is located in the heat shrink channel 4, the high-temperature air ejected from the first diffuser hole 22 on the first blowing surface 23 can be gathered on the heat shrink sleeve in the heat shrink channel 4, which facilitates the concentration of heat and thus accelerates the heating of the heat shrink sleeve. Similarly, the high-temperature air ejected from the second diffuser hole 32 on the second blowing surface 33 can be gathered on the heat shrink sleeve in the heat shrink channel 4. In addition, the high-temperature air ejected from the first diffuser hole 22 and the second diffuser hole 32 forms a vortex that envelops the heat shrink sleeve and prevents the heat shrink sleeve from shaking.
[0052] Furthermore, such as Figure 2 and Figure 3 As shown, a diversion protrusion 12 is provided in the flow collecting cavity 11. The diversion protrusion 12 is connected to the flow collecting base 1. The diversion protrusion 12 has a diversion arc surface, and the apex of the diversion arc surface is set directly opposite the air outlet of the hot air gun. The diversion arc surface divides the outlet of the flow collecting cavity 11 into a first guide channel 121 and a second guide channel 122. The flow collecting cavity 11 is connected to the first distribution cavity 21 through the first guide channel 121, and the flow collecting cavity 11 is connected to the second distribution cavity 31 through the second guide channel 122. It can be understood that the air blown out from the air outlet of the hot air gun... After the high-temperature air enters the collection cavity 11, it is separated by the diversion protrusion 12 and flows into the first distribution cavity 21 and the second distribution cavity 31 respectively. Since the diversion protrusion 12 has a diversion arc surface, and the apex of the diversion arc surface is directly opposite the air outlet of the hot air gun, it can greatly reduce the flow resistance of the high-temperature airflow entering the collection cavity 11, thereby reducing the eddies and turbulence generated inside the airflow heat shrink nozzle, making the high-temperature air ejected from the first diffuser hole 22, the second diffuser hole 32 and the underflow hole 521 more stable and powerful.
[0053] Example 2
[0054] This embodiment provides a heat-shrinkable nozzle, which is basically the same as the heat-shrinkable nozzle in Embodiment 1, with the main difference being: the first blowing surface 23 includes a first surface 231 and a second surface 232 joined at an angle, the axis of the first diffuser hole 22 on the first surface 231 is the first axis, and the axis of the first diffuser hole 22 on the second surface 232 is the second axis; the second blowing surface 33 includes a third surface 331 and a fourth surface 332 joined at an angle, the axis of the second diffuser hole 32 on the third surface 331 is the third axis, and the axis of the second diffuser hole 32 on the fourth surface 332 is the fourth axis; when the heat-shrinkable sleeve is placed in the heat-shrinkable channel 4, the first axis, the second axis, and the third axis... The first surface 231, the second surface 232, the third surface 331, and the fourth surface 332 are all planar. The first diffuser holes 22 are evenly distributed on the first surface 231 and the second surface 232. Since the first axis and the second axis intersect the heat shrink tubing, the high-temperature air ejected from the first diffuser holes 22 on the first surface 231 and the second surface 232 can be gathered on the heat shrink tubing in the heat shrink channel 4, which facilitates the concentration of heat and thus accelerates the heating of the heat shrink tubing. Similarly, the high-temperature air ejected from the second diffuser holes 32 on the third surface 331 and the fourth surface 332 can be gathered on the other side of the heat shrink tubing in the heat shrink channel 4.
[0055] Example 3
[0056] This embodiment provides a heat shrink nozzle, which is basically the same as the heat shrink nozzle in Embodiment 1, such as... Figure 5 As shown, the main difference is that the heat shrink nozzle also includes a base 5. One end of the base 5 is connected to the end of the first diffuser 2 away from the collector 1, and the other end of the base 5 is connected to the end of the second diffuser 3 away from the collector 1. The base 5, the first diffuser 2, the second diffuser 3, and the collector 1 form a heat shrink channel 4. In this embodiment, the base 5 seals the gaps in the three-sided heat shrink channel 4, forming a four-sided heat shrink channel 4 (upper, lower, left, and right), thereby slowing down the heat loss in the heat shrink channel 4.
[0057] Specifically, such as Figure 6 and Figure 7 As shown, the base 5 has a rectifier cavity 51, and the two ends of the rectifier cavity 51 are respectively connected to the first distribution cavity 21 and the second distribution cavity 31; the base 5 is provided with an underflow hole 521, and the rectifier cavity 51 is connected to the heat shrink channel 4 through the underflow hole 521; it can be understood that after the hot air gun is started, the high temperature airflow enters the rectifier cavity 51 through the first distribution cavity 21 and the second distribution cavity 31, and is blown out through the underflow hole 521, thereby heating the heat shrink sleeve in the heat shrink channel 4, further improving the heating efficiency of the heat shrink sleeve.
[0058] like Figure 5As shown, the base 5 is provided with a bottom blowing surface 52, and there are multiple bottom flow holes 521. The multiple bottom flow holes 521 are evenly distributed on the bottom blowing surface 52. Specifically, the bottom blowing surface 52 is the surface of the base 5 facing the heat shrink channel 4, and the multiple bottom flow holes 521 are evenly distributed on the bottom blowing surface 52.
[0059] To avoid wasting heat and to accelerate the heating rate of the heat shrink tubing, such as Figures 5 to 7 As shown, the bottom blowing surface 52 is an arc-shaped surface, and the axis of the circumferential surface corresponding to the bottom blowing surface 52 is the bottom axis. The bottom axis is located on the side of the bottom blowing surface 52 away from the rectifier cavity 51. For example, the bottom axis is located in the heat shrink channel 4. Therefore, the high-temperature air ejected from the bottom flow hole 521 on the bottom blowing surface 52 can be gathered on the heat shrink sleeve in the heat shrink channel 4, which facilitates the concentration of heat and thus accelerates the heating of the heat shrink sleeve.
[0060] Example 4
[0061] This embodiment provides a heat shrink nozzle, which is basically the same as the heat shrink nozzle in Embodiment 3, such as... Figure 8 As shown, the main difference is that: the first blowing surface 23 includes a first surface 231 and a second surface 232 joined at an angle, the axis of the first diffuser hole 22 on the first surface 231 is the first axis, and the axis of the first diffuser hole 22 on the second surface 232 is the second axis; the second blowing surface 33 includes a third surface 331 and a fourth surface 332 joined at an angle, the axis of the second diffuser hole 32 on the third surface 331 is the third axis, and the axis of the second diffuser hole 32 on the fourth surface 332 is the fourth axis; when the heat shrink tubing is placed in the heat shrink channel 4, the first axis, the second axis, the third axis, and the fourth axis all intersect with the heat shrink tubing; In this embodiment, the first surface 231, the second surface 232, the third surface 331, and the fourth surface 332 are all planar. The first diffuser holes 22 are evenly distributed on the first surface 231 and the second surface 232. Since the first axis and the second axis intersect the heat shrink tubing, the high-temperature air ejected from the first diffuser holes 22 on the first surface 231 and the second surface 232 can be gathered on the heat shrink tubing in the heat shrink channel 4, which facilitates the concentration of heat and thus accelerates the heating of the heat shrink tubing. Similarly, the high-temperature air ejected from the second diffuser holes 32 on the third surface 331 and the fourth surface 332 can be gathered on the other side of the heat shrink tubing in the heat shrink channel 4.
[0062] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A heat shrink nozzle, characterized in that, include: A flow collector (1) has a flow collecting cavity (11). When the flow collector (1) is connected to a hot air gun, the flow collecting cavity (11) is connected to the air outlet of the hot air gun. The first diffuser (2) is connected to the collector seat (1). The first diffuser (2) has a first distribution cavity (21) connected to the collector cavity (11) and a first diffuser hole (22) connected to the first distribution cavity (21). The second diffuser (3) is connected to the collector (1). The second diffuser (3) has a second distribution cavity (31) connected to the collector cavity (11) and a second diffuser hole (32) connected to the second distribution cavity (31). A heat shrinkable channel (4) for accommodating heat shrinkable tubing is formed between the first diffuser (2) and the second diffuser (3). The first distribution cavity (21) is connected to the heat shrinkable channel (4) through the first diffuser hole (22). The second distribution cavity (31) is connected to the heat shrinkable channel (4) through the second diffuser hole (32). A diversion protrusion (12) is provided in the collection cavity (11). The diversion protrusion (12) is connected to the collection seat (1). The diversion protrusion (12) has a diversion arc surface. The vertex of the diversion arc surface is set directly opposite the air outlet of the hot air gun. The flow-dividing arc surface divides the outlet of the flow-collecting cavity (11) into a first flow-guiding channel (121) and a second flow-guiding channel (122). The flow-collecting cavity (11) is connected to the first distribution cavity (21) through the first flow-guiding channel (121), and the flow-collecting cavity (11) is connected to the second distribution cavity (31) through the second flow-guiding channel (122).
2. The heat shrink nozzle according to claim 1, characterized in that, The first diffuser (2) and the second diffuser (3) are symmetrically arranged relative to the collector (1).
3. The heat shrink nozzle according to claim 2, characterized in that, The first diffuser (2) is provided with a first blowing surface (23), and the first diffuser hole (22) has a plurality of holes, which are evenly distributed on the first blowing surface (23). The second diffuser (3) is provided with a second blowing surface (33), and the second diffuser (32) has a plurality of holes, which are evenly distributed on the second blowing surface (33).
4. The heat shrink nozzle according to claim 3, characterized in that, The first blowing surface (23) includes a first surface (231) and a second surface (232) joined at an angle. The axis of the first diffuser hole (22) on the first surface (231) is the first axis, and the axis of the first diffuser hole (22) on the second surface (232) is the second axis. The second blowing surface (33) includes a third surface (331) and a fourth surface (332) joined at an angle. The axis of the second diffuser hole (32) on the third surface (331) is the third axis, and the axis of the second diffuser hole (32) on the fourth surface (332) is the fourth axis. When the heat shrink tubing is placed in the heat shrink channel (4), the first axis, the second axis, the third axis and the fourth axis all intersect with the heat shrink tubing.
5. The heat shrink nozzle according to claim 3, characterized in that, Both the first blowing surface (23) and the second blowing surface (33) are arc-shaped surfaces. The axis of the circumferential surface corresponding to the first blowing surface (23) is the first center line, and the axis of the circumferential surface corresponding to the second blowing surface (33) is the second center line. The first center line is located on the side of the first blowing surface (23) away from the first distribution cavity (21), and the second center line is located on the side of the second blowing surface (33) away from the second distribution cavity (31).
6. The heat shrink nozzle according to claim 2, characterized in that, The heat shrink nozzle also includes a base (5), one end of which is connected to the end of the first diffuser (2) away from the collector (1), and the other end of which is connected to the end of the second diffuser (3) away from the collector (1). The base (5), the first diffuser (2), the second diffuser (3) and the collector (1) together form the heat shrink channel (4).
7. The heat shrink nozzle according to claim 6, characterized in that, The base (5) has a rectifier cavity (51), and the two ends of the rectifier cavity (51) are respectively connected to the first distribution cavity (21) and the second distribution cavity (31). The base (5) is provided with an underflow hole (521), and the rectifier cavity (51) is connected to the heat shrink channel (4) through the underflow hole (521).
8. The heat shrink nozzle according to claim 7, characterized in that, The base (5) is provided with a bottom blowing surface (52), and there are multiple bottom flow holes (521), which are evenly distributed on the bottom blowing surface (52).
9. The heat shrink nozzle according to claim 8, characterized in that, The bottom blowing surface (52) is an arc-shaped surface, and the axis of the circumferential surface corresponding to the bottom blowing surface (52) is the bottom axis. The bottom axis is located on the side of the bottom blowing surface (52) away from the rectifier cavity (51).