A mold for radio frequency cable production

Abstract

The application relates to the field of radio frequency cable production, in particular to a mold for radio frequency cable production, which comprises an inner mold, an outer mold and a wrapping mechanism, the wrapping mechanism is arranged on the outer mold, the wrapping mechanism comprises an adapter ring, a wrapping disc and a wrapping motor, the adapter ring is rotatably sleeved on the outer mold, a gear is arranged on the outer wall of the adapter ring, the wrapping motor is arranged on one side of the outer mold, a pinion is connected to the power output shaft of the wrapping motor, the pinion is engaged with the gear, the wrapping disc is coaxially connected to the adapter ring, a wrapping arm is connected to the wrapping disc, a roller is rotatably connected to the wrapping arm, a material disc mounting column is arranged on the wrapping disc, and a first through hole for passing through a cable is arranged on the material disc mounting column, the application has the advantages that the wrapping mechanism and the mold are designed together, the radio frequency cable is cooled by the high thermal conductivity of the copper material belt during the wrapping, the wrapping of the copper shielding layer is completed in the cooling process, and the production process is simplified.

Description

Technical Field

[0001] This invention relates to the field of radio frequency cable manufacturing, and in particular to a mold for radio frequency cable manufacturing. Background Technology

[0002] Radio frequency (RF) cables are used in the field of wireless communication and are suitable for smartphones, remote controls, home appliances, GPS, network equipment, Wi-Fi modules, and GSM modules. Their general structure consists of a central conductor layer, an outer PE insulation layer, a copper foil shielding layer, a metal braided mesh, and finally a PVC outer sheath.

[0003] In the production of radio frequency cables, the conductor layer is first coated with PE material through a mold at high temperature. After being cooled by cooling water, the cable is then spirally wrapped with shielding copper foil through a wrapping machine before proceeding to subsequent processes. During this process, the cable needs to be cooled by cooling water, and a drying step is designed after cooling. The process is quite complex, and if the cable is not dried properly, it will affect subsequent production processes. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a mold for the production of radio frequency cables.

[0005] The objective of this invention is achieved through the following technical solution: A mold for producing radio frequency cables, comprising an inner mold, an outer mold, a pre-cooling structure, and a wrapping mechanism. The outer mold is connected to the inner mold and has a gap, the gap between the inner mold and the outer mold forming a flow channel. A feed inlet is provided on one side of the outer mold, the feed inlet communicating with the flow channel. A wire inlet hole is provided on the inner mold, and an extrusion hole is coaxially provided on the outer mold corresponding to the wire inlet hole. The pre-cooling structure is disposed on the outer mold. The wrapping mechanism is disposed on the outer mold, and the wrapping mechanism includes a transition ring, a wrapping disc, and a wrapping motor. The transition ring is rotatably sleeved on the outer mold, and the outer wall of the transition ring... A gear is provided on the upper part of the outer mold. The wrapping motor is located on one side of the outer mold. A small gear is connected to the power output shaft of the wrapping motor and meshes with the gear. The wrapping disc is coaxially connected to the adapter ring. A wrapping arm is connected to the wrapping disc. A roller is rotatably connected to the wrapping arm. A material tray mounting post is provided on the wrapping disc. The material tray mounting post is provided with a first through hole for the cable to pass through. Through the pre-cooling structure and wrapping mechanism provided on the outer mold, the cable is shaped after passing through the pre-cooling structure. Then, through the wrapping mechanism, the high thermal conductivity of the copper strip is used to further cool the cable and complete the coating of the shielding layer.

[0006] Specifically, the end of the inner mold that connects to the outer mold is tapered, and the outer mold is provided with a tapered hole corresponding to the inner mold. Correspondingly, the flow channel formed by the gap between the inner mold and the outer mold is tapered. Both the inner mold and the outer mold are provided with flanges and connected by the flanges. The tapered flow channel facilitates the uniform flow of the coating material from around the extrusion hole to the extrusion hole, making the coating material thickness uniform.

[0007] Specifically, one end of the outer mold is provided with a step, and the adapter ring is rotatably sleeved on the step, with the step limiting the axial movement of the adapter ring.

[0008] Specifically, it also includes a pre-cooling structure, which includes a water inlet pipe, a drain pipe, a pre-cooling tank, and a sealing plate. The pre-cooling tank is located at the stepped end of the outer mold and surrounds the extrusion hole. The sealing plate is located at one end of the pre-cooling tank. Both ends of the water inlet pipe and the drain pipe are connected to the pre-cooling tank and the outer wall of the outer mold. The pre-cooling mechanism can pre-cool and shape the cable to avoid damaging the cross-sectional shape of the cable when the wrapping mechanism wraps the copper shielding layer.

[0009] Specifically, the water inlet and outlet pipes on the outer wall of the outer mold are both equipped with pagoda-shaped interfaces, which facilitate the connection of water pipes.

[0010] Specifically, the diameter of the sealing plate is larger than the diameter of the step and smaller than the diameter of the transition ring, so that the sealing plate can not only seal but also position the transition ring axially.

[0011] Specifically, it also includes a wrapping angle adjustment mechanism, which includes a first adjustment block, a second adjustment block, and an adjustment screw. Multiple connecting plates are axially arranged on the edge of the wrapping disc. The wrapping disc is connected to the adapter ring through the connecting plates. One end of the wrapping arm is hinged to the wrapping disc. The first adjustment block is hinged to the connecting plate, and the second adjustment block is hinged to one side of the wrapping arm. The two ends of the adjustment screw are threaded to the first adjustment block and the second adjustment block, respectively, so that the wrapping angle can be adjusted when wrapping the copper shielding layer.

[0012] Specifically, a wrapping rod is coaxially provided at one end of the material tray mounting column. The wrapping rod has a semi-cylindrical structure. A wire passage groove is provided on one side of the wrapping rod. A material strip passage seam is provided at the bottom of the wire passage groove. The copper shielding layer is introduced into the wire passage groove through the material strip passage seam and spirally wound onto the cable. The copper shielding layer generates a radial tension on the cable. The radial tension is directed towards the material strip passage seam. The wire passage groove prevents the cable from shifting.

[0013] The present invention has the following advantages:

[0014] By setting the wrapping mechanism on the outer mold, when the mold is used, the cable is wrapped with a PE insulation layer after passing through the mold. At this time, the cable temperature is high. The cable is pre-cooled and shaped by the pre-cooling structure. After shaping, the cable is pulled out of the mold and enters the wrapping mechanism. At this time, the cable temperature is still high. The wrapping motor drives the adapter ring to rotate. After the adapter ring rotates, it drives the wrapping disc to rotate. After the wrapping disc rotates, the copper foil strip installed on the material tray mounting column is wrapped onto the cable. By utilizing the high thermal conductivity of copper foil, the cable is cooled down at the same time, and the copper foil is wrapped, simplifying the production steps. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the mold for manufacturing radio frequency cables according to the present invention;

[0016] Figure 2 This is an exploded view of the mold for manufacturing radio frequency cables according to the present invention;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 for Figure 2 Enlarged view at point B in the middle;

[0019] Figure 5 This is a cross-sectional view of the mold for manufacturing radio frequency cables according to the present invention;

[0020] In the diagram: 1. Inner mold; 2. Outer mold; 3. Feed inlet; 4. Pagoda interface; 5. Step; 6. Pre-cooling tank; 7. Gear; 8. Adapter ring; 9. Bearing; 10. Sealing plate; 11. Connecting plate; 12. Wrapping disc; 13. Wrapping rod; 14. Limit nut; 15. Material tray mounting post; 16. Motor base; 17. Pinion; 18. Wrapping motor; 19. First adjusting block; 20. Adjusting screw; 21. Second adjusting block; 22. Wrapping arm; 23. Roller; 24. Wire groove; 25. Material strip through-slot; 26. First through hole; 27. Second through hole; 28. Wire inlet hole; 29. ​​Extrusion hole; 30. Flow channel; 31. Water inlet pipe; 32. Drain pipe. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0025] like Figure 1-5As shown, a mold for producing radio frequency cables includes an inner mold 1, an outer mold 2, a pre-cooling structure, and a wrapping mechanism. The outer mold 2 is connected to the inner mold 1 and has a gap, forming a flow channel 30. An inlet 3 is provided on one side of the outer mold 2, communicating with the flow channel 30. An inlet hole 28 is provided on the inner mold 1, and an extrusion hole 29 is coaxially provided on the outer mold 2 corresponding to the inlet hole 28. The pre-cooling structure is disposed on the outer mold 2. The wrapping mechanism is disposed on the outer mold 2 and includes a transition ring 8, a wrapping disc 12, and a wrapping motor. 18. The adapter ring 8 is rotatably sleeved on the outer mold 2. A gear 7 is provided on the outer wall of the adapter ring 8. The wrapping motor 18 is located on one side of the outer mold 2. A small gear 17 is connected to the power output shaft of the wrapping motor 18. The small gear 17 meshes with the gear 7. The wrapping disc 12 is coaxially connected to the adapter ring 8. A wrapping arm 22 is connected to the wrapping disc 12. A roller 23 is rotatably connected to the wrapping arm 22. A material tray mounting post 15 is provided on the wrapping disc 12. A first through hole 26 for passing a cable is provided on the material tray mounting post 15. In this embodiment, the diameter of the extrusion hole 29 is larger than that of the inlet hole 28; the wrapping mechanism is set on the outer mold 2 at one end away from the inner mold 1, a motor base 16 is set on one side of the outer mold 2, the wrapping motor 18 is connected to the outer mold 2 through the motor base 16, the adapter ring 8 is rotatably connected to the outer mold 2 through the bearing 9, the material tray mounting post 15 is coaxially set with the wrapping tray 12, and a limiting nut 14 that is the same as the limiting material tray is threaded to one end of the material tray mounting post 15. When using the mold, the cable enters the inner mold 1 through the inlet hole 28. The high-temperature molten PE material is extruded into the feed port through the extrusion machine and then extruded into the extrusion hole through the flow channel to cover the cable. The cable covered with PE material is pre-cooled and shaped by the pre-cooling mechanism. After shaping, the cable is pulled out of the outer mold 2 and enters the wrapping mechanism. A roll of copper foil is coaxially mounted on the tray mounting post 15. The wrapping motor 18 drives the adapter ring 8 to rotate through the pinion 17 and gear 7. The adapter ring 8 drives the wrapping tray 12 to rotate. The wrapping tray 12 drives the copper foil tray mounted on the tray mounting post 15 to rotate. The copper foil is guided by the roller 23 and then spirally wrapped onto the cable. During the wrapping, the high thermal conductivity of the copper foil further cools the cable. While wrapping the copper shielding layer, the cooling effect is achieved by utilizing the properties of copper, which simplifies the production process.

[0026] Furthermore, the end of the inner mold 1 connected to the outer mold 2 is tapered, and the outer mold 2 is provided with a tapered hole corresponding to the inner mold 1. Correspondingly, the flow channel 30 formed by the gap between the inner mold 1 and the outer mold 2 is tapered. Both the inner mold 1 and the outer mold 2 are provided with flanges and connected by flanges. In this embodiment, after the flow channel 30 is tapered, it is beneficial for the PE material to flow evenly to the extrusion hole 29, and avoids the flow channel 30 being perpendicular to the extrusion hole 29 and generating lateral pressure on the cable, causing wear on the extrusion hole 29 and the cable.

[0027] Furthermore, a step 5 is provided at one end of the outer mold 2, and the adapter ring 8 is rotatably sleeved on the step 5. In this embodiment, the step 5 is provided at the end of the outer mold 2 away from the inner mold 1. By providing the step 5, the diameter of the adapter ring 8 can be reduced while the adapter ring 8 is axially limited.

[0028] Furthermore, the precooling structure includes a water inlet pipe 31, a drain pipe 32, a precooling tank 6, and a sealing plate 10. The precooling tank 6 is disposed at the end of the outer mold 2 where the step 5 is located, and the precooling tank 6 surrounds the extrusion hole 29. The sealing plate 10 is disposed at one end of the precooling tank 6. Both ends of the water inlet pipe 31 and the drain pipe 32 are connected to the precooling tank 6 and the outer wall of the outer mold 2. In this embodiment, the sealing plate 10 is coaxially provided with a second through hole 27 for passing a cable, and the precooling tank 6... The water inlet pipe 31 and the drain pipe 32 are both L-shaped. One end of the water inlet pipe 31 and the drain pipe 32 are set at the bottom of the precooling tank 6 and parallel to the axis of the extrusion hole 29. The other end of the water inlet pipe 31 and the drain pipe 32 are perpendicular to the axis of the extrusion hole 29 and are respectively connected to the two sides of the outer mold 2. When the mold is in use, cooling water is introduced into one end of the water inlet pipe 31 and cooling water is discharged from one end of the drain pipe 32. Through the precooling structure, the high-temperature unshaped cable in the extrusion hole 29 is shaped, which is convenient for the subsequent wrapping mechanism to wrap.

[0029] Furthermore, both the inlet pipe 31 and the outlet pipe on the outer wall of the outer mold 2 are provided with pagoda interfaces 4, which facilitate the connection of water pipes.

[0030] Furthermore, the diameter of the sealing plate 10 is larger than the diameter of the step 5 and smaller than the diameter of the transition ring 8. While the sealing plate 10 performs the sealing function, it can also limit the axial movement of the transition ring 8. Together with the step 5, it limits the axial movement of both ends of the transition ring 8.

[0031] Furthermore, it also includes a wrapping angle adjustment mechanism, which includes a first adjusting block 19, a second adjusting block 21, and an adjusting screw 20. Multiple connecting plates 11 are axially arranged along the edge of the wrapping disc 12. The wrapping disc 12 is connected to the adapter ring 8 via the connecting plates 11. One end of the wrapping arm 22 is hinged to the wrapping disc 12. The first adjusting block 19 is hinged to the connecting plate 11, and the second adjusting block 21 is hinged to one side of the wrapping arm 22. Both ends of the adjusting screw 20 are threadedly connected to the first adjusting block 19 and the second adjusting block 21, respectively. In this embodiment, the first adjusting block 19 and the second adjusting block 21 are respectively provided with threaded holes with reverse threads. The two ends of the adjusting screw 20 are respectively with reverse threads. The middle of the adjusting screw 20 is provided with a hexagonal head to facilitate the rotation of the screw. The edge of the wrapping disc 12 is provided with a hinge ear. The wrapping arm 22 is hinged to the wrapping disc 12 through the hinge ear. When wrapping, the copper foil is wrapped onto the cable at a certain wrapping angle. When it is necessary to adjust the wrapping angle, the distance between the first adjusting block 19 and the second adjusting block 21 can be adjusted by rotating the adjusting screw 20, thereby adjusting the angle between the wrapping arm 22 and the wrapping disc 12.

[0032] Furthermore, a wrapping rod 13 is coaxially provided at one end of the material tray mounting column 15. The wrapping rod 13 is a semi-cylindrical structure. A wire passage groove 24 is provided on one side of the plane of the wrapping rod 13. A material strip passage slit 25 is provided at the bottom of the wire passage groove 24. When using the mold, the cable passes through the wire passage groove 24, and the copper foil is wound around the material strip passage slit 25 away from the wire passage groove 24 by the roller 23 and enters the material strip passage slit 25. After passing through the material strip passage slit 25, it enters the wire passage groove 24. In this embodiment, the width of the material strip passage slit 25 is smaller than the width of the wire passage groove 24. During wrapping, the copper foil will exert a pulling force on the cable toward the material strip passage slit 25, while the wire passage groove 24 can provide support for the cable, preventing the cable from deviating from the movement path due to the pulling force of the copper foil, thus maintaining the wrapping effect and heat dissipation effect.

[0033] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of the present invention without departing from the scope of the present invention are within the protection scope of the present invention.

Claims

1. A mold for manufacturing radio frequency cables, characterized in that: The device includes an inner mold (1), an outer mold (2), a pre-cooling structure, and a wrapping mechanism. The outer mold (2) is connected to the inner mold (1) and has a gap. The gap between the inner mold (1) and the outer mold (2) forms a flow channel (30). A feed inlet (3) is provided on one side of the outer mold (2), and the feed inlet (3) is connected to the flow channel (30). A wire inlet hole (28) is provided on the inner mold (1), and an extrusion hole (29) is coaxially provided on the outer mold (2) corresponding to the wire inlet hole (28). The pre-cooling structure is provided on the outer mold (2). The wrapping mechanism is mounted on the outer mold (2). The wrapping mechanism includes a transition ring (8), a wrapping disc (12), and a wrapping motor (18). The transition ring (8) is rotatably mounted on the outer mold (2). A gear (7) is provided on the outer wall of the transition ring (8). The wrapping motor (18) is located on one side of the outer mold (2). A small gear (17) is connected to the power output shaft of the wrapping motor (18). The small gear (17) meshes with the gear (7). The wrapping disc (12) is coaxially connected to the transition ring (8). 8) On the wrapping disc (12), a wrapping arm (22) is connected, and a roller (23) is rotatably connected to the wrapping arm (22). The wrapping disc (12) is provided with a material tray mounting post (15), and the material tray mounting post (15) is provided with a first through hole (26) for the cable to pass through. After the wrapping disc (12) rotates, the copper foil strip installed on the material tray mounting post (15) is wrapped onto the cable. By utilizing the high thermal conductivity of the copper foil, the cable is cooled down while the copper foil is wrapped. One end of the outer mold (2) is provided with The step (5) is rotated and sleeved on the step (5). The precooling structure includes a water inlet pipe (31), a drain pipe (32), a precooling tank (6) and a sealing plate (10). The precooling tank (6) is located at one end of the outer mold (2) where the step (5) is located. The precooling tank (6) is arranged around the extrusion hole (29). The sealing plate (10) is located at one end of the precooling tank (6). Both ends of the water inlet pipe (31) and the drain pipe (32) are connected to the precooling tank (6) and the outer wall of the outer mold (2).

2. The mold for producing radio frequency cables according to claim 1, characterized in that: The inner mold (1) is tapered at one end connected to the outer mold (2). The outer mold (2) is provided with a tapered hole corresponding to the inner mold (1). Correspondingly, the flow channel (30) formed by the gap between the inner mold (1) and the outer mold (2) is tapered. Both the inner mold (1) and the outer mold (2) are provided with flanges and connected by the flanges.

3. The mold for producing radio frequency cables according to claim 1, characterized in that: The outer wall of the outer mold (2) is equipped with a pagoda interface (4) at the water inlet pipe (31) and the water outlet pipe.

4. The mold for producing radio frequency cables according to claim 3, characterized in that: The diameter of the sealing plate (10) is larger than the diameter of the step (5) and smaller than the diameter of the transition ring (8).

5. A mold for producing radio frequency cables according to claim 1, characterized in that: It also includes a wrapping angle adjustment mechanism, which includes a first adjustment block (19), a second adjustment block (21) and an adjustment screw (20). Multiple connecting plates (11) are axially arranged on the edge of the wrapping disc (12). The wrapping disc (12) is connected to the adapter ring (8) through the connecting plates (11). One end of the wrapping arm (22) is hinged to the wrapping disc (12). The first adjustment block (19) is hinged to the connecting plate (11). The second adjustment block (21) is hinged to one side of the wrapping arm (22). The two ends of the adjustment screw (20) are threaded to the first adjustment block (19) and the second adjustment block (21) respectively.

6. The mold for producing radio frequency cables according to claim 1, characterized in that: One end of the material tray mounting column (15) is coaxially provided with a wrapping rod (13). The wrapping rod (13) is a semi-cylindrical structure. A wire groove (24) is provided on one side of the plane of the wrapping rod (13). A material strip passage seam (25) is provided at the bottom of the wire groove (24).

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