Heating wire mold
By designing the heating wire mold, the coordination of the wire core guide and the injection molding channel is used to achieve efficient molding of the small section heating wire, solving the problem of processing difficulties, improving production efficiency and uniform cooling of the insulating layer.
Patent Information
- Application Number
- CN202422398561.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The existing heating wires are difficult to process, especially the heating wires spirally wound on the surface of the breathing pipe, which have a small cross-sectional size, which makes it difficult to process.
A heating wire mold is designed, including the mold body, the wire core guide and the forming part. The wire core is guided into the forming channel through the outlet end of the wire core guide, and the thermoplastic is injected into the insulating layer by using the injection molding channel to form an insulating layer. As the wire core and thermoplastic are continuously fed, the insulating layer surrounds the core and cools, and the heating wire is extruded from the forming channel.
It reduces the production difficulty of the heating line, improves the production efficiency of the heating line, ensures that the insulation layer is cooled evenly and avoids deformation.
Smart Images
Figure CN223147635U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heating wire forming equipment, in particular to a heating wire mold. Background Art
[0002] A ventilator is a commonly used respiratory support device in modern medical institutions. It is an effective means to artificially replace the function of autonomous ventilation and is widely used in respiratory failure caused by various reasons, anesthesia respiratory management during major surgeries, respiratory support treatment, and first aid resuscitation. In addition, when using a ventilator during the treatment process, the ventilator can prevent and treat respiratory failure, reduce complications, and extend or even save the patient's life.
[0003] In order to improve the comfort of patients using the ventilator, the gas inhaled by the patients is usually humidified and heated, so that the inhaled gas of the patients is closer to the state of the air in the human lungs and the comfort during inhalation is improved. The device for improving the inhaled gas includes a humidifying device and a heating wire. The humidifying device increases the humidity of the gas, and the heating wire is arranged inside the breathing pipe or spirally wound around the surface of the breathing pipe to heat the gas inside the breathing pipe at any time so that it maintains a proper temperature. In many cases, the diameter of the breathing pipe is 1 to 2 centimeters. In this case, for the heating wire, especially the heating wire spirally wound around the surface of the breathing pipe, its cross-sectional size is small, and there is a defect that it is difficult to process the heating wire. Summary of the Utility Model
[0004] In order to solve the technical problem of difficult processing of heating wires in the prior art, one of the purposes of the present utility model is to provide a heating wire mold.
[0005] One of the purposes of the present utility model is realized by adopting the following technical scheme:
[0006] A heating wire mold, the heating wire mold includes a mold body, a wire core guide and a forming member;
[0007] The mold body is sequentially provided with a feed hole, a connecting cavity and a discharge hole along a first direction;
[0008] The mold body is further provided with an injection molding channel communicating with the connecting cavity for injecting thermoplastics for forming an insulating layer into the connecting cavity;
[0009] The forming member is arranged at the discharge hole, and a forming channel is arranged on the forming member for guiding the surface shape of the thermoplastic formed insulating layer and guiding the insulating layer to move out of the material;
[0010] The wire core guide is arranged at the feed hole, and the wire outlet end of the wire core guide passes through the connecting cavity and extends to the forming channel for guiding the formation of a hollow channel inside the insulating layer and guiding the wire core into the hollow channel of the insulating layer.
[0011] Optionally, the heating wire die further includes a flow dividing ring, on which a number of circumferentially distributed flow dividing channels are provided. The flow dividing ring is arranged at the discharge hole and on the inner side of the formed part, and is used for dividing the thermoplastic flowing out of the connection cavity and guiding the thermoplastic to move to different circumferential positions at the wire outlet end through each of the flow dividing channels.
[0012] Optionally, the flow dividing ring includes an inner ring, an outer ring and a connecting part connected between the inner ring and the outer ring. The connecting part divides the area between the inner ring and the outer ring into a plurality of the flow dividing channels. The inner ring is sleeved on the wire outlet end, and the outer ring is embedded in the discharge hole.
[0013] Optionally, one end of the formed part close to the flow dividing ring is provided with a groove, which is arranged at the entrance of the forming channel and is communicated with the flow dividing channel.
[0014] Optionally, the wire core guide includes a guide main body, a wire outlet pipe and a mounting head;
[0015] The guide main body is arranged at the feed hole;
[0016] The wire outlet pipe is arranged at one end of the guide main body, and the wire outlet pipe is the wire outlet end;
[0017] The mounting head is arranged at the end of the guide main body far from the wire outlet pipe. A wire hole extending towards the wire outlet pipe is provided at the mounting head.
[0018] Optionally, the section of the wire outlet pipe extending into the formed part is a forming section.
[0019] Optionally, the cross section of the wire outlet pipe is D-shaped, and the cross section of the forming channel is D-shaped.
[0020] Optionally, the heating wire die further includes a locking cover detachably connected to the die body. The locking cover is arranged at the discharge hole and covers the formed part.
[0021] Optionally, a convex ring surrounding the discharge hole is provided on one side of the die body where the discharge hole is located;
[0022] The locking cover is threadedly connected to the convex ring, and a through hole for the material to pass through is provided in the middle of the locking cover.
[0023] Optionally, the first end of the die body is provided with the feed hole, the connection cavity and the discharge hole, and the second end of the die body is provided with an injection molding interface. One end of the injection molding channel is communicated with the injection molding interface, and the other end is communicated with the connection cavity.
[0024] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0025] The wire core guide is a structure for guiding the wire core to pass through. The outlet end of the wire core guide extends to the molding channel, so that the wire core can be directly guided through the molding channel; in addition, the thermoplastic can enter the connection cavity through the injection molding channel, and then enter the molding channel. The thermoplastic fills the molding channel and forms an insulation layer of the wire core around the outlet end of the wire core guide in the molding channel. With the continuous feeding of the wire core and the thermoplastic, the insulation layer detaches from the outlet end of the wire core guide, thereby surrounding the wire core. The wire core and the insulation layer continue to move and cool, and extend out of the molding channel, thereby completing the extrusion molding of the heating wire. The wire core is fed into the molding barrel channel through the outlet end of the wire core guide, and the thermoplastic is usually extruded into the molding channel through the injection molding channel. The molding channel can be used to quickly extrude heating wires with small cross-sections, reduce the production difficulty of the heating wire, and improve the production efficiency of the heating wire. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a schematic structural diagram of a heating wire mold of the utility model;
[0027] Figure 2 It is a structural schematic diagram of the heating wire mold of the utility model from another perspective;
[0028] Figure 3 This is an exploded schematic diagram of the heating wire mold of the utility model;
[0029] Figure 4 It is a cross-sectional view of the heating wire mold of the present utility model.
[0030] Description of the accompanying drawings:
[0031] 1. Mold body; 11. Feed hole; 12. Connecting cavity; 13. Discharge hole; 14. Injection channel; 15. Convex ring;
[0032] 2. Wire core guide; 21. Guide body; 22. Wire outlet tube; 23. Mounting head; 231. Wire hole;
[0033] 3. Molding part; 31. Molding channel; 32. Groove;
[0034] 4. diverter ring; 41. inner ring; 42. outer ring; 43. connecting part;
[0035] 5. Locking cover; 51. Through hole. DETAILED DESCRIPTION
[0036] The following will be combined with the attached examples of the present application Figure 1 To Attachment Figure 4, the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts belong to the scope protected by the present application.
[0037] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.
[0038] In addition, the descriptions involving "first", "second", etc. in the present application are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.
[0039] Such as Figures 1 - 4A heating wire mold as shown is used for processing and forming heating wires. The heating wire mold includes a mold body 1, a core guide 2, and a forming member 3. Specifically, the mold body 1 is sequentially provided with a feed hole 11, a connection cavity 12, and a discharge hole 13 along a first direction. The mold body 1 is further provided with an injection channel 14 communicating with the connection cavity 12 for injecting thermoplastics for forming an insulating layer into the connection cavity 12. The forming member 3 is arranged at the discharge hole 13, and a forming channel 31 is provided on the forming member 3 for guiding the surface forming and moving discharge of the insulating layer. Specifically, it is to guide the surface profile of the thermoplastic formed insulating layer. For example, when the insulating layer needs to be configured with a circular cross-section, the discharge hole 13 is set to be circular; when the insulating layer needs to be configured with a D-shaped cross-section, the discharge hole 13 is set to be D-shaped. The core guide 2 is arranged at the feed hole 11, and the outlet end of the core guide 2 passes through the connection cavity 12 and extends to the forming channel 31 for guiding the formation of a hollow channel inside the insulating layer and for guiding the core into the forming channel 31, specifically guiding the core into the middle pipe of the insulating layer. On the mold body 1, the core guide 2 is arranged at the feed hole 11, and the forming member 3 is arranged at the discharge hole 13. The core guide 2 is a structure for guiding the core to pass through, and the outlet end of the core guide 2 extends to the forming channel 31, so that the core can be directly guided through the forming channel 31. In addition, the thermoplastics can enter the connection cavity 12 through the injection channel 14, and then enter the forming channel 31. The thermoplastics fill the forming channel 31 and form an insulating layer of the core around the outlet end of the core guide 2 in the forming channel 31. As the core and the thermoplastics continue to be fed, the insulating layer disengages from the outlet end of the core guide 2, thus surrounding the core. The core and the insulating layer continue to move and cool, and extend out of the forming channel 31, thereby completing the extrusion forming of the heating wire. The core is sent into the forming cylinder channel through the outlet end of the core guide 2, and usually the thermoplastics are extruded into the forming channel 31 through the injection channel 14. The use of the forming channel 31 can quickly extrude heating wires with a small cross-section, reduce the production difficulty of the heating wires, and improve the production efficiency of the heating wires.
[0040] In addition, the outlet end of the core guide 2 extends to the forming channel 31, that is, the outlet pipe 22 in the following text extends into the forming channel 31. The outlet pipe 22 can delay the contact time between the core and the insulating layer, increase the thermoplastics cooling time, so that the thermoplastics have enough time to cool into the insulating layer, and avoid the vibration of the core during the feeding process from affecting the shape of the insulating layer.
[0041] Furthermore, as Figure 3 , Figure 4As shown in the figure, the heating wire mold further includes a flow dividing ring 4. The flow dividing ring 4 is provided with a plurality of flow dividing channels distributed along the circumference. The flow dividing ring 4 is arranged in the discharge hole 13 and located inside the formed part 3, and is used for dividing the thermoplastic flowing out of the connection cavity 12, guiding the thermoplastic to move to different circumferential positions at the wire outlet end through the flow dividing channels. The flow dividing ring 4 reduces the overall passing cross-section, so that the thermoplastic passes through the inner area of the flow dividing ring 4, guiding and distributing the thermoplastic in the connection cavity 12 to be divided, making the thermoplastic more evenly distributed in the program channel.
[0042] Specifically, the flow dividing ring 4 includes an inner ring 41, an outer ring 42 and a connecting part 43 connecting the inner ring 41 and the outer ring 42. The connecting part 43 divides the area between the inner ring 41 and the outer ring 42 into a plurality of flow dividing channels. The inner ring 41 is sleeved on the wire outlet end, and the outer ring 42 is embedded in the discharge hole 13. In addition, the flow dividing channels are specifically evenly distributed on the circumference of the flow dividing ring 4. Specifically, the connecting part 43 is evenly distributed along the circumference between the inner ring 41 and the outer ring 42.
[0043] Furthermore, as shown in Figure 3 、 Figure 4 the figure, one end of the formed part 3 close to the flow dividing ring 4 is provided with a groove 32. The groove 32 is arranged at the entrance of the forming channel 31, and the groove 32 is communicated with the flow dividing channel. When the groove 32 is not provided, the flow dividing ring 4 presses tightly against the end face of the formed part 3, and the thermoplastic cannot flow from the flow dividing channel to the forming channel 31. After a groove 32 is provided at one end of the formed part 3 close to the flow dividing ring 4, the area covered by the groove 32 is larger than the area covered by the inner ring 41. The flow dividing channel is communicated with the groove 32. After the thermoplastic is divided by the flow dividing channel, it converges from all directions to the middle through the groove 32 and enters the forming channel 31. In this way, the thermoplastic can be replenished in a timely manner at each part of a circumference, avoiding uneven temperature drop of the thermoplastic due to uneven flow velocity at different positions, making the insulation layer cool evenly, and avoiding deformation of the heating wire after forming.
[0044] Still further, as shown in Figure 3 、 Figure 4As shown, the wire core guide 2 includes a guide body 21, an outlet pipe 22, and a mounting head 23. The guide body 21 is disposed in the feed hole 11 and is threadedly connected to the die body 1 through the feed hole 11. The outlet pipe 22 is disposed at one end of the guide body 21, and the outlet pipe 22 is the aforementioned outlet end. The mounting head 23 is disposed at the end of the guide body 21 away from the outlet pipe 22, and a wire hole 231 extending toward the outlet pipe 22 is provided at the mounting head 23. The mounting head 23 is away from the outlet pipe 22, so the mounting head 23 is a protruding structure exposed from the feed hole 11. On the one hand, it is a structure for mounting the wire core guide 2. When the guide body 21 is threadedly connected to the die body 1, the wire core guide 2 can be tightened or loosened through the mounting head 23, so as to realize the disassembly and installation of the wire core guide 2. On the other hand, the mounting head 23 is provided with a wire hole 231, and the mounting head 23 is exposed from the feed hole 11, which is convenient for threading and loading the wire core, and is also convenient for connecting the mounting head 23 with the wire core feeding structure. For example, when the wire core feeding structure is a wire tube feeding, it can be connected to the mounting head 23 through some wire tube connectors, so as to realize the wire tube feeding.
[0045] In addition, the outlet pipe 22 guides the wire core into the forming channel 31. The outlet pipe 22 is a stable structure guiding structure for the wire core before thermoplastic cooling, so as to prevent the wire core from interfering with thermoplastic cooling.
[0046] In some embodiments of the outlet pipe 22, the section of the outlet pipe 22 extending into the formed part 3 is the forming section.
[0047] For the outlet pipe 22, the cross-section of the outlet pipe 22 is D-shaped, and the cross-section of the forming channel 31 is D-shaped. In addition to the forming section, the outlet pipe 22 also includes a connecting section connected to the flow dividing ring 4, and the forming section is located at the end of the connecting section. The cross-section of the forming section is D-shaped. The cross-section of the connecting section can be D-shaped or adapted to the shape of the inner ring 41 of the flow dividing ring 4. For example, when the inner ring 41 is circular, the connecting section is also circular.
[0048] In some embodiments of the heating wire die, such as Figure 3 , Figure 4 As shown, the heating wire die further includes a locking cover 5 detachably connected to the die body 1. The locking cover 5 is disposed at the discharge hole 13 and covers the formed part 3. On the one hand, the locking cover 5 is used to lock the formed part 3, and at the same time, it presses the formed part 3 and the flow dividing ring 4 to improve the sealing effect between the formed part 3 and the flow dividing ring 4, and to improve the sealing effect between the flow dividing ring 4 and the die body 1.
[0049] Of course, in order to further improve the sealing effect on both sides of the flow dividing ring 4, sealing rings can be respectively disposed on both sides of the flow dividing ring 4. One sealing ring is located between the flow dividing ring 4 and the formed part 3, and the other sealing ring is located on the side of the flow dividing ring 4 away from the formed part 3 and between the flow dividing ring 4 and the die body 1.
[0050] Furthermore, as Figure 3 、 Figure 4 shown, on one side of the discharge hole 13 of the mold body 1, there is a convex ring 15 arranged around the discharge hole 13. The locking cover 5 is threadedly connected to the convex ring 15, and a through hole 51 for the material to pass through is provided in the middle of the locking cover 5. An internal thread or an external thread is provided on the convex ring 15, a flange is provided on the edge of the locking cover 5, and an external thread or an internal thread adapted to the convex ring 15 is provided on the flange. The locking cover 5 is arranged on the convex ring 15 and threadedly connected to the convex ring 15, so as to lock and compress the formed part 3.
[0051] In some embodiments of the mold body 1, the first end of the mold body 1 is used for core feeding and heating wire forming. Specifically, the first end of the mold body 1 is provided with a feeding hole 11, a connection cavity 12, and a discharge hole 13. The second end of the mold body 1 is the end for thermoplastic feeding. Specifically, an injection molding interface is provided at the second end of the mold body 1, and one end of the injection molding channel 14 communicates with the injection molding interface and the other end communicates with the connection cavity 12. The outer diameter of the injection molding interface is for the injection molding equipment. Through the injection molding interface, the thermoplastic is introduced into the mold body 1.
[0052] The above embodiments are only the preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the protection scope required by the present invention.
Claims
1. A heating wire mold, characterized in that, The heating wire mold includes a mold body, a wire core guide, and a forming member; The mold body is sequentially provided with a feed hole, a connecting cavity, and a discharge hole along a first direction; The mold body is further provided with an injection molding channel communicating with the connecting cavity for injecting thermoplastics for forming an insulating layer into the connecting cavity; The forming member is arranged at the discharge hole, and a forming channel is provided on the forming member for guiding the surface shape of the thermoplastically formed insulating layer and guiding the insulating layer to move out of the mold; The wire core guide is arranged at the feed hole, and the wire outlet end of the wire core guide passes through the connecting cavity and extends to the forming channel for guiding the formation of a hollow channel inside the insulating layer and guiding the wire core into the hollow channel of the insulating layer.
2. The heating wire mold according to claim 1, characterized in that, The heating wire mold further includes a flow dividing ring, and a plurality of circumferentially distributed flow dividing channels are provided on the flow dividing ring. The flow dividing ring is arranged at the discharge hole and inside the forming member for dividing the thermoplastics flowing out of the connecting cavity and guiding the thermoplastics to move to different circumferential positions at the wire outlet end through the respective flow dividing channels.
3. The heating wire mold according to claim 2, characterized in that, The flow dividing ring includes an inner ring, an outer ring, and a connecting portion connecting between the inner ring and the outer ring. The connecting portion divides the area between the inner ring and the outer ring into a plurality of the flow dividing channels. The inner ring is sleeved on the wire outlet end, and the outer ring is embedded in the discharge hole.
4. The heating wire mold according to claim 3, wherein, A groove is provided at one end of the forming member close to the flow dividing ring. The groove is arranged at the entrance of the forming channel and communicates with the flow dividing channel.
5. The heating wire mold according to any one of claims 1 to 4, characterized in that, The wire core guide includes a guide body, a wire outlet tube, and a mounting head; The guide body is arranged at the feed hole; The wire outlet tube is arranged at one end of the guide body, and the wire outlet tube is the wire outlet end; The mounting head is arranged at the end of the guide body far from the wire outlet tube. A wire hole extending towards the wire outlet tube is provided at the mounting head.
6. The heating wire mold according to claim 5, characterized in that, The section of the wire outlet tube extending into the forming member is a forming section.
7. The heating wire mold according to claim 5, characterized in that, The cross section of the wire outlet tube is D-shaped, and the cross section of the forming channel is D-shaped.
8. The heating wire mold according to claim 1, characterized in that, The heating wire mold further includes a locking cover detachably connected to the mold body. The locking cover is arranged at the discharge hole and covers the forming member.
9. The heating wire mold according to claim 8, wherein A convex ring surrounding the discharge hole is provided on one side of the mold body where the discharge hole is located; The locking cover is threadedly connected to the convex ring, and a through hole for allowing the material to pass through is provided in the middle of the locking cover.
10. The heating wire mold according to claim 1, characterized in that, The first end of the mold body is provided with the feed hole, the connecting cavity, and the discharge hole, and an injection molding interface is provided at the second end of the mold body. One end of the injection molding channel communicates with the injection molding interface, and the other end communicates with the connecting cavity.