Sleeve for breathing mask hot stamping repair equipment

By optimizing the design of the tooling sleeve, the problem of excessive heat absorption caused by the large contact area during the diameter expansion process of silicone respirators in existing equipment was solved, thereby improving the production qualification rate and reliability of silicone respirators.

CN223998978UActive Publication Date: 2026-03-17JIERUI PRECISE SILICONE INJECTION MOLDING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-31
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

The sleeve design of existing heat-pressing repair equipment for breathing masks causes the silicone breathing mask tubing connection to absorb too much heat due to the excessive contact area after diameter expansion, resulting in silicone hardening and inability to effectively seal with the ventilator tubing.

Method used

A tooling sleeve was designed with the second side being at the same distance from the axis, the first side extending from the second side to the top surface with the distance from the axis gradually decreasing, the top surface being recessed into the cavity, the medium block contacting the heating unit, and the third side being at a smaller distance from the axis than the second side, thus optimizing the contact area and heat transfer path.

Benefits of technology

This reduces heat absorption during the expansion process of the silicone respirator, prevents surface hardening, ensures product qualification rate and reliability, and achieves smooth detachment and effective sealing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a sleeve for breathing mask hot stamping repair equipment, which comprises a tool sleeve arranged on a working table of a main body, and is characterized in that the distance between a second side surface of the tool sleeve and an axis is kept consistent from bottom to top; the first side face of the tool sleeve extends to the top face from the end connected with the second side face, and the distance between the first side face and the axis is smaller than the distance between the second side face and the axis. The distance between the second side face and the axis is consistent, heating stability is guaranteed, the first side face extends to the top face from the second side face and is closer to the axis, the contact area when the silica gel breathing mask is separated is reduced, heat absorption is reduced, surface hardening is avoided, the proportion of the height of the second side face to the diameter expanding end of the breathing mask is optimized to be 1: 1.1, and the service life of the breathing mask is prolonged. The contact area is further reduced, smooth separation is ensured, and the production qualification rate and the product reliability of the medical silica gel breathing mask are improved.
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Description

Technical Field

[0001] This utility model relates to the field of respiratory mask processing technology, and in particular to a sleeve for a respiratory mask hot stamping repair device. Background Technology

[0002] After medical silicone respirators are demolded, uneven cooling can cause the diameter of the tubing connecting to the respirator to shrink due to thermal expansion and contraction, resulting in product defects. To solve this problem, hot stamping repair equipment is usually used to place a sleeve over the tubing connection and expand the diameter through heating.

[0003] However, the sleeves of existing equipment are mostly cylindrical, and the silicone breathing mask tubing needs to be detached from the sleeve surface after heating and expansion. During this process, the contact area between the tubing and the cylindrical sleeve is too large, causing the silicone to absorb too much heat and harden on the surface. Ultimately, this may prevent the silicone breathing mask from achieving an effective seal connection with the ventilator tubing. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] To address the aforementioned problems, this utility model provides the following technical solution: A sleeve for heat-pressing repair equipment for respirator masks includes a tooling sleeve, wherein the tooling sleeve is disposed on the worktable of the main body, characterized in that: the distance between the second side of the tooling sleeve and the axis is consistent from bottom to top, the first side of the tooling sleeve extends from the end connected to the second side to the top surface, and the distance between the first side and the axis is less than the distance between the second side and the axis.

[0006] Preferably, the ratio of the height of the second side to the expansion end of the breathing mask is close to 1:1.2.

[0007] Preferably, the first side of the tooling sleeve extends from the end that connects with the second side towards the top surface, and the distance from the axis gradually decreases.

[0008] Preferably, the ratio between the distances of adjacent first side surfaces and the axis is close to 1:1.1.

[0009] Preferably, the distance between the portion of the first side closest to the second side and the axis is approximately 1:1.1 to the distance between the second side and the axis.

[0010] Preferably, the top surface of the tooling sleeve is recessed into the cavity of the tooling sleeve.

[0011] Preferably, the distance between the top surface and the axis gradually decreases from one end of the tooling sleeve to one end of the cavity.

[0012] Preferably, the inner wall of the second side is provided with a medium block, one end of which is in contact with the surface of the heating unit.

[0013] Preferably, the other end of the medium block completely covers the inner wall of the second side.

[0014] Preferably, the third side of the tooling sleeve is connected to the second side, and the distance between the third side and the axis is less than the distance between the second side and the axis.

[0015] The beneficial effects of this utility model are as follows: the tooling sleeve is set on the workbench of the main body, and its second side is at the same distance from the axis, ensuring heating stability. The first side extends from the second side to the top surface, which is closer to the axis, reducing the contact area when the silicone breathing mask is removed, reducing heat absorption, and avoiding surface hardening. The ratio of the height of the second side to the expanded diameter end of the breathing mask is optimized to 1:1.1, further reducing the contact area, ensuring smooth removal, and improving the production qualification rate and product reliability of medical silicone breathing masks. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1 This is a perspective view of the entire embodiment.

[0018] Figure 2 This is a perspective view of the tooling sleeve in this embodiment.

[0019] Figure 3 This is an example. Figure 2 A sectional view.

[0020] Figure 4 This is a cross-sectional view of the tooling sleeve assembling the medium block in this embodiment.

[0021] In the figure: main body 100, workbench 101, tooling sleeve 200, cavity 200a, top surface 201, first side surface 202, second side surface 203, inner wall 203a, third side surface 204, medium block 300. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0025] Example

[0026] Reference Figures 1 to 4 This utility model provides a sleeve for a heat-pressing repair device for respirator masks, aiming to solve the problem in the prior art where the silicone respirator mask pipe connection, after diameter expansion, results in excessive heat absorption and surface hardening of the silicone due to the large contact area with the cylindrical sleeve. The sleeve is a tooling sleeve 200, which is mounted on the worktable 101 of the main body 100. The distance between the second side 203 of the tooling sleeve 200 and the axis 200b remains consistent from bottom to top, ensuring the stability of the sleeve during heating. The first side 202 of the tooling sleeve 200 extends from the end connected to the second side 203 to the top surface 201, and the distance between the first side 202 and the axis 200b is always less than the distance between the second side 203 and the axis 200b. This reduces the contact surface area when the silicone respirator mask detaches from the sleeve, thereby reducing the absorption of heat from the sleeve by the silicone respirator mask and avoiding surface hardening caused by excessive heat absorption. The height of the second side 203 is approximately 1:1.2 in ratio to the expanded diameter end of the respirator. This optimized ratio further reduces the contact area between the silicone respirator and the sleeve, decreasing heat absorption while ensuring that the expanded silicone respirator can be easily detached from the sleeve. The sleeve design in this embodiment effectively improves the production pass rate and product reliability of medical silicone respirators.

[0027] In this embodiment, the specific structure of the heat transfer repair device for a respirator mask may include the following parts:

[0028] Heating element: The heating element is located within the main body 100. This embodiment provides two options:

[0029] Ceramic heater (Ceramic heater CH-200): The ceramic heater provides uniform heating and is built into the tooling sleeve 200. Its precise temperature control makes it ideal for heating silicone materials.

[0030] Infrared heater (IR-150): The infrared heater can heat up quickly and the heating area is concentrated, making it suitable for localized heating. It is usually installed within 200mm of the tooling sleeve;

[0031] Temperature control system (PID temperature controller TC-1000 / thermocouple sensor TS-500): The temperature control system is also located within the main body 100 and mainly includes the following components:

[0032] PID temperature controller (PID temperature controller TC-1000): The PID controller can accurately control the heating temperature and avoid overheating or underheating.

[0033] Temperature sensor (thermocouple sensor TS-500): The thermocouple or thermistor is set near the tooling sleeve 200 where it is connected to the breathing mask. It is used to monitor the temperature of the heating area in real time and feed the data back to the PID temperature controller to achieve precise temperature control.

[0034] Other structures and configurations:

[0035] Tooling sleeve 200: used to fix the breathing mask and ensure accurate contact between the heating element and the mask; Body 100: serves as the main support structure of the equipment, and integrates the heating element and temperature control system.

[0036] Power supply and control panel (Power Control Panel PCP-100): Provides power to the device and allows users to set and adjust temperature parameters.

[0037] In this embodiment, the respirator mask heat transfer repair device can be assembled according to actual needs. For the sake of simplifying the description, this embodiment does not describe other possible parts and system configurations in detail, but in actual applications, it can be further optimized and expanded according to specific needs.

[0038] In another embodiment, such as Figures 2-4 As shown, the first side 202 of the tooling sleeve 200 extends from the end connected to the second side 203 toward the top surface 201, and the distance from the axis 200b gradually decreases. The ratio between the distances of adjacent first side 202 and the axis 200b is close to 1:1.1. The ratio between the distance of the part of the first side 202 close to the second side 203 and the axis 200b is close to 1:1.1 with the distance between the second side 203 and the axis 200b.

[0039] The first side 202 of the tooling sleeve 200 extends from the end that connects with the second side 203 toward the top surface 201, and the distance from the axis 200b gradually decreases, forming an inclined surface. At the same time, the ratio between the distance between adjacent first side 202 and the axis 200b, as well as the ratio between the distance between the part of the first side 202 near the second side 203 and the axis 200b, are close to 1:1.1, which further reduces the contact area and heat absorption, making the silicone breathing mask easier to remove.

[0040] Compared with the previous embodiment, the performance of the sleeve was further improved by setting the slope and optimizing the proportions more precisely, which solved the problem of excessive heat absorption and surface hardening caused by the large contact area during the expansion process of the silicone breathing mask.

[0041] In another embodiment, such as Figures 2-4 As shown, the top surface 201 of the tooling sleeve 200 is recessed in the cavity 200a of the tooling sleeve 200, and the distance between the top surface 201 and the axis 200b gradually decreases from one end of the top of the tooling sleeve 200 to one end of the cavity 200a.

[0042] The design of the top of the sleeve tapering towards the cavity 200a creates a more efficient heat transfer path between the sleeve's interior and surface. Due to the gradually narrowing top, heat is concentrated more within the sleeve's interior and surface, rather than dissipating outwards. This design acts like a "heat concentrator," more effectively transferring heat to the silicone respirator's tubing connections that require expansion. The tapering structure reduces heat loss to the external environment because heat is confined within the sleeve's interior space and surface during transfer, rather than diffusing outwards. This design improves heat utilization, ensuring the silicone respirator receives sufficient heat during expansion. The concave design of the top conical space creates a relatively enclosed heat retention area. Because the concave structure acts like a "heat trap," heat is less likely to dissipate outwards within the sleeve, but is retained within the cavity 200a. This design is similar to the principle of an insulated container, effectively reducing heat loss, and the concave conical space also ensures a more even distribution of heat within the sleeve. Heat circulates within the concave area, rather than dissipating directly outwards. This helps the silicone respirator to heat more evenly during the expansion process, avoiding problems such as localized overheating or insufficient heat distribution.

[0043] In another embodiment, such as Figures 2-4As shown, the inner wall 203a of the second side 203 is provided with a medium block 300. One end of the medium block 300 is in contact with the surface of the heating unit, and the other end of the medium block 300 completely covers the inner wall 203a of the second side 203. The medium block 300 serves as a heat transfer bridge between the heating unit and the inner wall of the sleeve. It can be appropriately matched according to the shape of the heating unit. This setting of the medium block 300 ensures the uniform transfer of heat from the heating unit to the inner wall of the sleeve, thereby making the silicone breathing mask more uniformly heated during the expansion process.

[0044] Regarding the material and characteristics of media block 300;

[0045] High thermal conductivity:

[0046] The dielectric block 300 is typically made of a material with high thermal conductivity (such as copper, aluminum or ceramic composite material) to ensure that heat can be transferred quickly and efficiently from the heating unit to the inner wall of the sleeve.

[0047] High temperature resistance:

[0048] The dielectric block 300 needs to have good high temperature resistance to withstand the high temperature environment of the heating unit while maintaining a stable heat transfer effect.

[0049] Structural stability:

[0050] The design of the dielectric block 300 needs to ensure that it will not deform or be damaged in high-temperature environments, thereby ensuring the continuity and stability of heat transfer;

[0051] In another embodiment, such as Figure 2 , Figure 3 As shown, the third side 204 of the tooling sleeve 200 is connected to the second side 203, and the distance between the third side 204 and the axis 200b is smaller than the distance between the second side 203 and the axis 200b. The main purpose of this is to reduce the contact area between the silicone respirator and the sleeve, thereby reducing heat absorption and avoiding surface hardening. Through the inward contraction structure of the third side 204, the silicone respirator has a smaller contact area during the expansion process, absorbing less heat, and is also easier to detach from the sleeve after expansion.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sleeve for a respiratory mask hot stamping repair apparatus comprising a tooling sleeve (200) provided on a worktable (101) of a main body (100), characterized in that: The distance between the second side (203) of the tooling sleeve (200) and the axis (200b) is consistent from bottom to top, the first side (202) of the tooling sleeve (200) extends from the end connected with the second side (203) to the top surface (201), and the distance between the first side (202) and the axis (200b) is smaller than the distance between the second side (203) and the axis (200b).

2. The sleeve for a respiratory mask hot stamp repair apparatus of claim 1, wherein: The ratio of the height of the second side (203) to the diameter of the expanded end of the breathing mask is close to 1:1.

2.

3. The sleeve for a respiratory mask hot stamp repair apparatus of claim 1, wherein: The first side (202) of the tooling sleeve (200) extends from the end connected with the second side (203) to the top surface (201), and the distance between the first side (202) and the axis (200b) gradually decreases.

4. The sleeve for a respiratory mask hot stamp repair apparatus of claim 3, wherein: The ratio between the distance between the adjacent first side (202) and the axis (200b) is close to 1:1.

1.

5. The sleeve for a respiratory mask hot stamp repair apparatus of claim 4, wherein: The distance between the part of the first side (202) close to the second side (203) and the axis (200b) is close to the ratio of the distance between the second side (203) and the axis (200b) to 1:1.

1.

6. The sleeve for a respiratory mask hot stamp repair apparatus of claim 1, wherein: The top surface (201) of the tooling sleeve (200) is concave in the cavity (200a) of the tooling sleeve (200).

7. The sleeve for a respiratory mask hot stamp repair apparatus of claim 6, wherein: The distance between the top surface (201) and the axis (200b) gradually decreases from the top end of the tooling sleeve (200) to the end of the cavity (200a).

8. The sleeve for a respiratory mask hot stamp repair apparatus of claim 1, wherein: The inner wall (203a) of the second side (203) is provided with a medium block (300), one end of the medium block (300) is in contact with the surface of the heating unit.

9. The sleeve for a respiratory mask hot stamp repair apparatus of claim 8, wherein: The other end of the medium block (300) is completely covered on the inner wall (203a) of the second side (203).

10. The sleeve for a respiratory mask hot stamp repair apparatus of claim 1, wherein: The third side (204) of the tooling sleeve (200) is connected with the second side (203), and the distance between the third side (204) and the axis (200b) is smaller than the distance between the second side (203) and the axis (200b).