A tightening mold with a blow hole

Abstract

The application relates to a cable bundling die with a blowing port and belongs to the technical field of mechanical processing forming dies, which comprises a die body and a bundling nozzle arranged on the die body, the die body is provided with a bundling channel along the axis of the die body for the cable and the shielding tape to pass through, the top of the die body is provided with an air inlet, the bottom of the die body is provided with a blowing port at the side of the bundling nozzle, and the die body is internally provided with an air path channel; the air inlet is used for connecting an external high-pressure gas source; high-pressure airflow generated by the high-pressure gas source blows to the end of the bundling nozzle in contact with the shielding tape through the air inlet and the air path channel. The application realizes real-time blowing of the end of the bundling nozzle in contact with the shielding tape by arranging the air inlet, the air path channel and the blowing port on the die body in cooperation with the external high-pressure gas source, can effectively avoid the accumulation of metal scraps, does not need manual cleaning during shutdown, guarantees the continuity of production, improves the coating quality of the cable shielding layer, and reduces the damage probability of the shielding tape.

Description

Technical Field

[0001] This application relates to the technical field of machining forming molds, and in particular to a clamping mold with an air blowing port. Background Technology

[0002] Cable shielding tape is a process that uses metal strips to form a continuous conductive layer, creating a Faraday cage to achieve EMI / EMC protection (blocking external electromagnetic interference and suppressing internal signal radiation), while also providing electrostatic discharge and auxiliary safety protection. It is widely used in communication, industrial control, high-frequency data, and power cables.

[0003] In cable coating processes, molds are typically used to tightly wrap the shielding tape around the cable. However, because the mold needs to tighten the shielding tape at the exit point of both the cable and the mold, friction easily occurs between the shielding tape and the mold exit. This results in the generation and accumulation of metal debris generated from the friction between the shielding tape and the inner wall of the mold. If this metal debris accumulates over a long period, it will exacerbate frictional wear between the shielding tape and the inner wall of the mold, reducing the mold's lifespan. Furthermore, the debris easily adheres to the surface of the shielding tape and the cable, affecting the coating quality of the cable shielding layer and potentially causing localized damage to the shielding tape, reducing the cable's EMI / EMC protection performance. Additionally, falling debris can contaminate the processing environment, clog the mold exit point, and increase the workload of subsequent cleaning.

[0004] Currently, some processing production lines use manual periodic mold cleaning to remove debris, but this method is inefficient and requires downtime, affecting production continuity. Summary of the Invention

[0005] To address the problems of existing cable shielding tape tightening molds accumulating metal debris, which are difficult to clean, affect production continuity, and compromise the quality of the coating, this application provides a tightening mold with an air blowing port.

[0006] This application provides a clamping mold with an air blowing port, which adopts the following technical solution: A clamping mold with an air inlet includes a mold body and a clamping nozzle disposed on the mold body. The mold body has a clamping channel along its own axis for cables and shielding tape to pass through. The clamping nozzle is detachably installed in the clamping channel. An air inlet is provided at the top of the mold body, and an air inlet is provided at the bottom of the mold body on the side of the clamping nozzle. An air passage is provided inside the mold body, and the air passage is connected to the air inlet and the air inlet respectively. The air inlet is used to connect to an external high-pressure air source. The high-pressure airflow generated by the high-pressure air source is blown from the air inlet to the end of the clamping nozzle that contacts the shielding tape through the air inlet and the air passage.

[0007] By adopting the above technical solution, the high-pressure air source inputs high-pressure airflow into the air passage through the air inlet. The airflow is then precisely blown from the air outlet to the contact end between the tightening nozzle and the shielding tape through the air passage. This can blow away the metal debris generated by friction in real time, preventing debris accumulation. No manual shutdown for cleaning is required, ensuring continuous production. At the same time, it reduces the adhesion of debris to the shielding tape and cable surface, improves the coating quality of the cable shielding layer, and reduces the probability of shielding tape damage. The air blowing can also reduce the heat generated when the shielding tape and tightening nozzle come into contact and rub against each other, thereby dissipating heat from the entire tightening mold and ensuring a continuous and safe working state.

[0008] Optionally, the mold body is provided with a mounting assembly, and the tightening nozzle is fixed in the tightening channel of the mold body by the mounting assembly. The mounting assembly includes: The mounting ring has its bottom end inserted into the clamping channel of the mold body, and its top end protruding out of the clamping channel. The mounting ring is tapered, with the top diameter being smaller than the bottom diameter. The clamping nozzle is engaged within the mounting ring. A limiting component is disposed on the mold body and is used to limit the position of the mounting ring.

[0009] By adopting the above technical solution, the conical mounting ring and the tightening nozzle are engaged to achieve rapid positioning and installation of the tightening nozzle. The conical structure has good fit and can effectively prevent the tightening nozzle from shifting during operation, ensuring tightening accuracy. The limiting component limits and fixes the mounting ring, preventing the mounting ring from shaking as the cable and shielding tape are transported, further improving the stability of the mold operation.

[0010] Optionally, the limiting member includes: A limiting plate, wherein a limiting hole is provided at the center of the limiting plate, and the mounting ring is located in the limiting hole; The limiting bolt has several through holes evenly distributed around the limiting hole on the limiting plate, and several threaded holes are opened on the mold body corresponding to the positions of the through holes. The limiting bolt passes through the through holes and is threadedly connected to the threaded holes.

[0011] By adopting the above technical solution, the limiting plate is connected to the mold body by limiting bolts, which is convenient for installation and disassembly. The circumferentially distributed limiting bolts can make the limiting force of the limiting plate on the mounting ring more uniform, preventing the mounting ring from being locally stressed and offset, and ensuring the installation stability of the mounting ring and the tightening nozzle. At the same time, the structure is simple in design and has low processing and assembly costs.

[0012] Optionally, the limiting plate has an installation groove, the mold body has an empty groove, the bottom of the mold body is located in the installation groove, the empty groove is connected to the installation groove of the limiting plate to form an air blowing cavity, and the part of the installation ring that extends out of the tightening channel is located in the air blowing cavity.

[0013] By adopting the above technical solution, the air cavity formed by the empty slot and the installation slot provides a space for buffering and diffusion of high-pressure airflow, which enables the high-pressure airflow to act more evenly on the contact end of the tightening nozzle and the shielding strip after being blown out from the air outlet, thereby improving the purging effect.

[0014] Optionally, the number of air inlets is several, and the several air inlets are evenly distributed around the bottom of the mold body along the circumference of the tightening nozzle.

[0015] By adopting the above technical solution, multiple air nozzles evenly distributed in the circumference can blow away the contact end between the tightening nozzle and the shielding strip from multiple directions, achieving thorough cleaning of metal debris without dead angles, avoiding blind spots that exist in the blowing of a single air nozzle, and further improving the comprehensiveness and effectiveness of the blowing.

[0016] Optionally, the air passage includes a main air passage and several branch air passages. The main air passage is opened along the radial direction of the mold body, and one end of the main air passage is connected to the air inlet. One end of each of the several branch air passages is connected to the other end of the main air passage, and the other end is connected to the corresponding air blowing port.

[0017] By adopting the above technical solution, the main air path achieves centralized input of high-pressure airflow, and the branch air path evenly distributes the airflow of the main air path to each blowing port, ensuring that the airflow pressure and flow rate of each blowing port are consistent, and ensuring the uniformity of circumferential blowing; the split design of the air path channel facilitates processing and reduces the processing difficulty of the mold.

[0018] Optionally, the end of the tightening nozzle near the shielding strip is provided with a wear-resistant layer, which is a hard alloy coating.

[0019] By adopting the above technical solution, the hard alloy coating has extremely high hardness and wear resistance, which can effectively reduce friction loss between the tightening nozzle and the shielding tape, extend the service life of the tightening nozzle, reduce the replacement frequency of the tightening nozzle, and reduce production and maintenance costs.

[0020] Optionally, the inner wall of the air intake port is provided with an internal thread, and the air intake port is detachably connected to the pipeline of the high-pressure air source through the internal thread.

[0021] By adopting the above technical solution, the internal thread connection method can realize the quick disassembly and assembly of the air inlet interface and the high-pressure air source pipeline, which facilitates the installation, debugging and subsequent maintenance of the mold. At the same time, the thread connection has good sealing performance, which can effectively prevent high-pressure airflow from leaking at the connection and ensure stable purging air pressure.

[0022] Optionally, the inner walls of the tightening channels are all polished, and the mold body is made of tungsten-cobalt hard alloy.

[0023] By adopting the above technical solutions, tungsten-cobalt cemented carbide has the characteristics of high hardness, good wear resistance, and high strength, which can effectively improve the overall service life of the mold and adapt to the continuous working environment of cable processing. The polishing treatment of the inner wall of the tightening channel can reduce the frictional resistance between the cable and the shielding tape and the inner wall of the channel, reduce the metal debris generated by friction, and at the same time make the cable and shielding tape transport smoother and ensure the accuracy of wrapping and tightening.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting air inlet, air passage and air outlet on the mold body, and with the help of an external high pressure air source, the contact end between the tightening nozzle and the shielding tape can be purged in real time. This can effectively prevent the accumulation of metal debris, eliminate the need for manual cleaning without stopping the machine, ensure production continuity, improve the covering quality of the cable shielding layer, and reduce the probability of shielding tape damage. 2. By setting up an installation assembly consisting of a conical mounting ring and a limiting component, the tightening nozzle can be quickly positioned, installed, and disassembled, facilitating replacement and maintenance after wear. The conical mounting ring and the circumferentially distributed limiting bolts can ensure the installation stability of the tightening nozzle, prevent displacement during operation, and ensure tightening accuracy. 3. The internal thread design of the air inlet allows for quick disassembly and sealing connection with the high-pressure air source pipeline, preventing air leakage, ensuring stable purging air pressure, and improving the convenience of mold installation, debugging, and maintenance. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of this application; Figure 2 This is a structural schematic diagram of the phantom, tightening nozzle, and mounting components in this application; Figure 3 This is an exploded structural diagram of the mold body, tightening nozzle, mounting ring, and limiting component in this application.

[0026] Reference numerals: 1. Mold body; 11. Tensioning channel; 12. Air inlet; 13. Air outlet; 2. Tensioning nozzle; 3. Mounting assembly; 31. Mounting ring; 32. Limiting component; 33. Limiting disc; 34. Limiting bolt; 35. Limiting hole; 36. Through hole; 37. Mounting groove. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 This application will be described in further detail.

[0028] This application discloses a clamping mold with an air blowing port.

[0029] Reference Figure 1 and Figure 2The clamping mold with an air inlet includes a mold body 1 and a clamping nozzle 2. The mold body 1 is made of tungsten cobalt hard alloy and is cylindrical in shape. A clamping channel 11 is formed along the mold body 1's axis, through which cables and shielding tapes pass. The inner wall of the channel is polished to reduce conveying friction resistance. The clamping nozzle 2 is detachably installed at the discharge end of the clamping channel 11. The end of the clamping nozzle 2 near the shielding tape is coated with a wear-resistant layer formed by a hard alloy coating to improve wear resistance.

[0030] Reference Figure 1 and Figure 3 The top of the mold body 1 is provided with an air inlet 12, and the inner wall of the air inlet 12 is machined with internal threads for threaded connection with the pipeline of an external high-pressure air source. Several air blowing ports 13 are provided at the bottom of the mold body 1, located on the side of the tightening nozzle 2, and are evenly distributed along the circumference of the tightening nozzle 2. An air passage is provided inside the mold body 1, including a main air passage and several branch air passages. The main air passage is radially opened along the mold body 1, with one end connected to the air inlet 12. One end of each branch air passage is connected to the other end of the main air passage, and the other end is connected to one of the four air blowing ports 13, achieving uniform distribution of high-pressure airflow.

[0031] Reference Figure 2 and Figure 3 The mold body 1 is provided with an installation component 3. The tightening nozzle 2 is fixed in the tightening channel 11 by the installation component 3. The installation component 3 includes an installation ring 31 and a limiting member 32. The installation ring 31 is tapered, with its top diameter being smaller than its bottom diameter. The bottom end of the installation ring 31 passes through the tightening channel 11 of the mold body 1, and the top end passes out of the tightening channel 11. The tightening nozzle 2 is engaged in the installation ring 31 to achieve quick positioning.

[0032] Reference Figure 2 and Figure 3 The limiting component 32 includes a limiting plate 33 and four limiting bolts 34. The limiting plate 33 has a limiting hole 35 at its center that is adapted to the mounting ring 31, and the mounting ring 31 passes through the limiting hole 35. The limiting plate 33 has four through holes 36 evenly distributed around the limiting hole 35. The mold body 1 has four threaded holes at the positions corresponding to the through holes 36. The limiting bolts 34 pass through the through holes 36 and are threadedly connected to the threaded holes to fix the limiting plate 33 on the mold body 1 and limit the mounting ring 31.

[0033] Reference Figure 2 and Figure 3 The limiting plate 33 has an installation groove 37 that fits the bottom of the mold body 1. The bottom of the mold body 1 has an empty groove. The bottom of the mold body 1 is embedded in the installation groove 37. The empty groove and the installation groove 37 are interconnected to form an air blowing cavity. The part of the installation ring 31 that extends out of the tightening channel 11 is located in the air blowing cavity, providing a buffer diffusion space for the high-pressure airflow.

[0034] The working principle of this application embodiment is as follows: When performing the cable shielding tape wrapping and tightening operation, first connect the external high-pressure air source pipeline to the air inlet 12 via a threaded connection, then insert the cable and shielding tape into the tightening channel 11 of the mold body 1, tighten it through the tightening nozzle 2, and then output it; at the same time, turn on the high-pressure air source, and the high-pressure airflow enters the main air path through the air inlet 12, and then is evenly distributed to the four air blowing ports 13 through the four branch air paths. It is blown out from the air blowing port 13 into the air blowing cavity, and after buffering and diffusion, it is evenly blown towards the contact end between the tightening nozzle 2 and the shielding tape, blowing away the metal debris generated by friction in real time and avoiding debris accumulation.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A clamping mold with an air inlet, characterized in that: The device includes a mold body (1) and a tightening nozzle (2) disposed on the mold body (1). The mold body (1) has a tightening channel (11) along its own axis for cables and shielding tape to pass through. The tightening nozzle (2) is detachably installed in the tightening channel (11). The top of the mold body (1) has an air inlet (12). The bottom of the mold body (1) is located on the side of the tightening nozzle (2) and has an air blowing port (13). The mold body (1) has an air passage inside. The air passage is connected to the air inlet (12) and the air blowing port (13) respectively. The air inlet (12) is used to connect to an external high-pressure air source. The high-pressure airflow generated by the high-pressure air source is blown from the air inlet (12) and the air passage from the air blowing port (13) to the end of the tightening nozzle (2) that contacts the shielding tape.

2. The clamping mold with an air blowing port according to claim 1, characterized in that: The mold body (1) is provided with an installation component (3), and the tightening nozzle (2) is fixed in the tightening channel (11) of the mold body (1) by the installation component (3). The installation component (3) includes: Mounting ring (31), the bottom end of which passes through the tightening channel (11) of the mold body (1), the top end of which passes through the tightening channel (11), the mounting ring (31) is tapered, the top diameter of which is smaller than the bottom diameter, and the tightening nozzle (2) is engaged in the mounting ring (31); A limiting member (32) is provided on the mold body (1) and is used to limit the position of the mounting ring (31).

3. A clamping mold with an air blowing port according to claim 2, characterized in that: The limiting member (32) includes: A limiting plate (33) is provided with a limiting hole (35) at the center of the limiting plate (33), and the mounting ring (31) is located in the limiting hole (35); The limiting bolt (34) has several through holes (36) evenly distributed around the limiting hole (35) on the limiting plate (33). The mold body (1) has several threaded holes corresponding to the through holes (36). The limiting bolt (34) passes through the through holes (36) and is threadedly connected to the threaded holes.

4. A clamping mold with an air blowing port according to claim 3, characterized in that: The limiting plate (33) has an installation groove (37), the mold body (1) has an empty groove, the bottom of the mold body (1) is located in the installation groove (37), the empty groove is connected to the installation groove (37) of the limiting plate (33) to form an air blowing cavity, and the part of the installation ring (31) that extends out of the tightening channel (11) is located in the air blowing cavity.

5. A clamping mold with an air blowing port according to claim 1, characterized in that: The number of air inlets (13) is several, and the several air inlets (13) are evenly distributed along the circumference of the tightening nozzle (2) at the bottom of the mold body (1).

6. A clamping mold with an air blowing port according to claim 5, characterized in that: The air passage includes a main air passage and several branch air passages. The main air passage is opened along the radial direction of the mold body (1), and one end of the main air passage is connected to the air inlet (12). One end of each of the several branch air passages is connected to the other end of the main air passage, and the other end is connected to the corresponding air outlet (13).

7. A clamping mold with an air blowing port according to claim 1, characterized in that: The tightening nozzle (2) has a wear-resistant layer at one end near the shielding strip, and the wear-resistant layer is a hard alloy coating.

8. A clamping mold with an air blowing port according to claim 1, characterized in that: The inner wall of the air inlet (12) is provided with an internal thread, and the air inlet (12) is detachably connected to the pipeline of the high-pressure air source through the internal thread.

9. A clamping mold with an air blowing port according to claim 1, characterized in that: The inner walls of the tightening channel (11) are all polished, and the mold (1) is made of tungsten cobalt hard alloy.

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