Cable semi-extrusion free-adjusting mold

Abstract

The utility model belongs to cable half extrusion type exempt from adjusting mould technical field, especially a kind of cable cable half extrusion type exempt from adjusting mould, including mould main part, the top of mould main part is equipped with feed inlet, the inside of mould main part is equipped with half extrusion forming cavity, the side of mould main part is equipped with core wire positioning hole, the inside of half extrusion forming cavity is provided with exempt from adjusting mould core subassembly, the other side of mould main part is equipped with discharge gate, exempt from adjusting mould core subassembly can automatically adapt the cable core wire of different diameter: fixed mould core and movable mould core are connected by elastic reset piece, when cable core wire passes through core wire positioning hole and enters half extrusion forming cavity, core wire will push movable mould core and slide along guide sliding slot, elastic reset piece automatically adjusts the gap of movable mould core and fixed mould core according to core wire diameter, limit block prevents movable mould core from excessive sliding;The whole process does not need manual disassembly adjustment, solves the problem that existing mould adjustment is complicated and adaptability is poor.

Description

Technical Field

[0001] This utility model relates to the field of cable semi-extrusion adjustment-free mold technology, and in particular to a cable semi-extrusion adjustment-free mold. Background Technology

[0002] In cable production, extrusion molding is a crucial process. It involves using a mold to extrude molten plastic insulation or sheathing onto the cable core, forming a cable product that meets specifications. Currently, most cable extrusion molds on the market are "adjustable," requiring manual adjustment of the gap between the mold core and sleeve to suit different cable core diameters or extruded layer thicknesses. However, these adjustable molds present several technical challenges in practical use, severely impacting production efficiency and product quality. Existing mold adjustment relies on operator experience: first, the locking structure on the outside of the mold needs to be disassembled, the mold core position needs to be manually moved after opening the mold, and then the gap between the mold core and the mold sleeve needs to be measured with a feeler gauge. The gap is repeatedly adjusted until it meets the requirements, and finally the locking mold is reassembled. Each adjustment process is relatively long. If the production batch is frequently changed, the downtime of the equipment increases significantly and the production efficiency decreases significantly. Therefore, we propose a cable semi-extrusion type adjustment-free mold. Utility Model Content

[0003] The purpose of this invention is to provide a cable semi-extrusion type adjustment-free mold, which solves the existing problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A cable semi-extrusion type adjustment-free mold includes a mold body, a feed port on the top of the mold body, a semi-extrusion forming cavity on the inner side of the mold body, a core wire positioning hole on one side of the mold body, an adjustment-free mold core assembly on the inner side of the semi-extrusion forming cavity, a discharge port on the other side of the mold body, a locking assembly on the outer side of the mold body, and a heat dissipation assembly fixedly installed on the outer side of the mold body. The adjustable mold core assembly includes a fixed mold core, a movable mold core, an elastic reset member, and a limiting block. The fixed mold core is fixedly installed on the inner wall of the semi-extrusion molding cavity, the movable mold core is slidably installed on the inner side of the semi-extrusion molding cavity, one end of the elastic reset member is fixedly installed on one side of the movable mold core, the other end of the elastic reset member is fixedly installed on the inner wall of the semi-extrusion molding cavity, and the limiting block is fixedly installed on the inner side of the semi-extrusion molding cavity, and the limiting block is in contact with the movable mold core. The locking assembly includes a locking bolt, a locking nut, and a washer. The locking bolt passes through the mold body, the locking nut is threaded onto the outside of the locking bolt, and the washer is sleeved on the outside of the locking bolt. The washer is located between the locking nut and the mold body. The heat dissipation assembly includes heat dissipation fins, heat dissipation ducts, and thermally conductive silicone pads. The heat dissipation fins are fixedly installed on the outside of the mold body, the heat dissipation ducts are opened on the inside of the heat dissipation fins, and the thermally conductive silicone pads are fixedly installed between the heat dissipation fins and the mold body.

[0005] Preferably, a wear-resistant sleeve is fixedly installed on the inner side of the core wire positioning hole.

[0006] Preferably, a guide slider is fixedly installed on one side of the movable mold core, and a guide groove is provided on the inner wall of the semi-extrusion molding cavity, with the guide slider slidably installed on the inner side of the guide groove.

[0007] Preferably, both the fixed mold core and the movable mold core have arc-shaped bonding surfaces on their inner sides, and the inner side of the arc-shaped bonding surfaces is provided with a polishing layer.

[0008] Preferably, a feed guide ring is fixedly installed on the inner side of the feed inlet, and the inner wall of the feed guide ring is provided with a smooth coating.

[0009] Preferably, a discharge guide sleeve is fixedly installed on the inner side of the discharge port, and an exhaust groove is provided on the outer side of the discharge guide sleeve.

[0010] Preferably, a temperature detection block is fixedly installed on the outer side of the mold body, and a temperature sensor is fixedly installed on the inner side of the temperature detection block.

[0011] Preferably, the elastic reset member is a spring, and a dustproof sleeve is provided on the outer side of the elastic reset member.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a cable semi-extrusion type adjustment-free mold. The adjustment-free mold core assembly can automatically adapt to cable cores of different diameters: the fixed mold core and the movable mold core are connected by an elastic reset component. When the cable core passes through the core positioning hole and enters the semi-extrusion forming cavity, the core will push the movable mold core to slide along the guide groove. The elastic reset component automatically adjusts the gap between the movable mold core and the fixed mold core according to the core diameter, and the limit block prevents the movable mold core from sliding excessively. The whole process does not require manual disassembly and adjustment, solving the problems of cumbersome adjustment and poor adaptability of existing molds. This utility model discloses a cable semi-extrusion type adjustment-free mold. The inner arc-shaped mating surfaces of the fixed mold core and the movable mold core cooperate to form a semi-extrusion space adapted to the cable core wire. The polished layer on the inner side of the arc-shaped mating surface can reduce the flow resistance of the plastic melt and ensure uniform coating of the extruded layer. At the same time, the wear-resistant sleeve on the inner side of the core wire positioning hole can accurately guide the core wire, prevent the core wire from deviating and causing eccentricity problems, ensure that the thickness deviation of the extruded layer of the same batch of cables meets the requirements, and reduce the need for subsequent correction processes. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying 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.

[0014] Figure 1 This is a three-dimensional structural diagram of a cable semi-extrusion type adjustment-free mold proposed in this utility model; Figure 2 This is a partial three-dimensional structural diagram of a cable semi-extrusion type adjustment-free mold proposed in this utility model; Figure 3 This is a three-dimensional structural diagram of the underside of a cable semi-extrusion adjustment-free mold proposed in this utility model. Figure 4 This is a three-dimensional cross-sectional view of a cable semi-extrusion type adjustment-free mold proposed in this utility model.

[0015] In the diagram: 1. Mold body; 2. Feed inlet; 3. Semi-extrusion molding cavity; 4. Core wire positioning hole; 5. Adjustable mold core assembly; 6. Discharge outlet; 7. Locking assembly; 8. Heat dissipation assembly; 9. Wear-resistant sleeve; 10. Guide slider; 11. Guide groove; 12. Arc-shaped mating surface; 13. Polished layer; 14. Feed guide ring; 15. Smooth coating; 16. Discharge guide sleeve; 17. Venting groove; 18. Temperature detection block; 19. Temperature sensor; 20. Dustproof sleeve; 21. Fixed mold core; 22. Movable mold core; 23. Elastic reset component; 24. Limiting block; 31. Locking bolt; 32. Locking nut; 33. Washer; 41. Heat dissipation fins; 42. Heat dissipation duct; 43. Thermal conductive silicone pad. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] refer to Figure 1-4 A cable semi-extrusion type adjustment-free mold includes a mold body 1, a feed port 2 at the top of the mold body 1, a semi-extrusion forming cavity 3 on the inner side of the mold body 1, a core wire positioning hole 4 on one side of the mold body 1, an adjustment-free mold core assembly 5 on the inner side of the semi-extrusion forming cavity 3, a discharge port 6 on the other side of the mold body 1, a locking assembly 7 on the outer side of the mold body 1, and a heat dissipation assembly 8 fixedly installed on the outer side of the mold body 1. The adjustment-free mold core assembly 5 can automatically adapt to cable cores of different diameters. The fixed mold core 21 and the movable mold core 22 are connected by an elastic reset member 23. When the cable core passes through the core wire positioning hole 4 and enters the semi-extrusion forming cavity 3, the core wire will push the movable mold core 22 to slide along the guide groove 11. The elastic reset member 23... The gap between the movable mold core 22 and the fixed mold core 21 is automatically adjusted according to the core wire diameter, and the limiting block 24 prevents the movable mold core 22 from sliding excessively. The whole process does not require manual disassembly and adjustment, solving the problems of cumbersome adjustment and poor adaptability of existing molds. The adjustment-free mold core assembly 5 includes a fixed mold core 21, a movable mold core 22, an elastic reset member 23 and a limiting block 24. The fixed mold core 21 is fixedly installed on the inner wall of the semi-extrusion molding cavity 3, the movable mold core 22 is slidably installed on the inner side of the semi-extrusion molding cavity 3, one end of the elastic reset member 23 is fixedly installed on one side of the movable mold core 22, and the other end of the elastic reset member 23 is fixedly installed on the inner wall of the semi-extrusion molding cavity 3. The limiting block 24 is fixedly installed on the inner side of the semi-extrusion molding cavity 3 and fits against the movable mold core 22. The locking assembly 7 includes a locking bolt 31, a locking nut 32, and a washer 33. The locking bolt 31 passes through the mold body 1. The locking nut 32 is threaded onto the outside of the locking bolt 31. The washer 33 is sleeved on the outside of the locking bolt 31 and is located between the locking nut 32 and the mold body 1. The heat dissipation assembly 8 includes heat dissipation fins 41, heat dissipation ducts 42, and thermally conductive silicone pads 43. The heat dissipation fins 41 are fixedly installed on the outside of the mold body 1. The heat dissipation ducts 42 are opened on the inside of the heat dissipation fins 41. The thermally conductive silicone pads 43 are fixedly installed between the heat dissipation fins 41 and the mold body 1.

[0018] In this embodiment, a wear-resistant sleeve 9 is fixedly installed inside the core wire positioning hole 4; the inner arc-shaped mating surface 12 of the fixed mold core 21 and the movable mold core 22 cooperate to form a semi-extrusion space adapted to the cable core wire, and the polished layer 13 inside the arc-shaped mating surface 12 can reduce the flow resistance of the plastic melt and ensure uniform coverage of the extruded layer; at the same time, the wear-resistant sleeve 9 inside the core wire positioning hole 4 can accurately guide the core wire, prevent the core wire from deviating and causing eccentricity, ensure that the thickness deviation of the extruded layer of the same batch of cables meets the requirements, and reduce the subsequent correction process; in this embodiment, a guide slider 10 is fixedly installed on one side of the movable mold core 22, and a guide groove 11 is opened on the inner wall of the semi-extrusion molding cavity 3, and the guide slider 10 is slidably installed inside the guide groove 11.

[0019] In this embodiment, both the fixed mold core 21 and the movable mold core 22 have arc-shaped contact surfaces 12 on their inner sides, and the inner side of the arc-shaped contact surfaces 12 is provided with a polishing layer 13; in this embodiment, a feed guide ring 14 is fixedly installed on the inner side of the feed inlet 2, and the inner wall of the feed guide ring 14 is provided with a smooth coating 15; the thermally conductive silicone pad 43 in the heat dissipation assembly 8 can closely fit the mold body 1 and the heat dissipation fins 41, and quickly conduct the heat inside the mold to the heat dissipation fins 41; the heat dissipation air duct 42 on the inner side of the heat dissipation fins 41 increases the heat dissipation area, accelerates the air flow to remove heat, and avoids extrusion defects caused by local high temperature in the mold; at the same time, the temperature sensor 19 on the inner side of the temperature detection block 18 can monitor the mold temperature in real time, which makes it convenient for operators to adjust the cooling measures in time and extend the service life of the mold; in this embodiment, a discharge guide sleeve 16 is fixedly installed on the inner side of the discharge port 6, and an exhaust groove 17 is provided on the outer side of the discharge guide sleeve 16.

[0020] In this embodiment, a temperature detection block 18 is fixedly installed on the outer side of the mold body 1, and a temperature sensor 19 is fixedly installed on the inner side of the temperature detection block 18; the locking bolt 31 in the locking assembly 7 passes through the mold body 1, and together with the locking nut 32 and the washer 33, the mold can be quickly locked without disassembling multiple sets of scattered parts; when the mold needs to be maintained, the mold can be opened simply by unscrewing the locking nut 32. Compared with existing molds, the mold replacement or maintenance time is shortened, and the effective operating time of the equipment is increased; in this embodiment, the elastic reset member 23 is a spring, and a dustproof sleeve 20 is sleeved on the outer side of the elastic reset member 23.

[0021] Specifically, the adjustment-free mold core assembly 5 can automatically adapt to cable cores of different diameters: the fixed mold core 21 and the movable mold core 22 are connected by an elastic reset member 23. When the cable core passes through the core positioning hole 4 and enters the semi-extrusion molding cavity 3, the core will push the movable mold core 22 to slide along the guide groove 11. The elastic reset member 23 automatically adjusts the gap between the movable mold core 22 and the fixed mold core 21 according to the core diameter, and the limit block 24 prevents the movable mold core 22 from sliding excessively. The whole process does not require manual disassembly and adjustment, solving the problems of cumbersome adjustment and poor adaptability of existing molds. The inner arc-shaped mating surfaces 12 of the fixed mold core 21 and the movable mold core 22 cooperate to form a semi-extrusion space adapted to the cable core wire. The polished layer 13 on the inner side of the arc-shaped mating surface 12 can reduce the flow resistance of the plastic melt and ensure uniform coverage of the extruded layer. At the same time, the wear-resistant sleeve 9 on the inner side of the core wire positioning hole 4 can accurately guide the core wire, prevent the eccentricity problem caused by the core wire deviation, ensure that the thickness deviation of the extruded layer of the same batch of cables meets the requirements, and reduce the subsequent correction process. The locking bolt 31 in the locking assembly 7 passes through the mold body 1 and, together with the locking nut 32 and the washer 33, enables the mold to lock quickly without disassembling multiple sets of scattered parts. When the mold needs to be maintained, the mold can be opened simply by unscrewing the locking nut 32. Compared with existing molds, the mold replacement or maintenance time is shortened, and the effective operating time of the equipment is increased. The thermally conductive silicone pad 43 in the heat dissipation component 8 can fit tightly against the mold body 1 and the heat dissipation fins 41, and quickly conduct heat inside the mold to the heat dissipation fins 41; the heat dissipation air channel 42 inside the heat dissipation fins 41 increases the heat dissipation area, accelerates air flow to remove heat, and avoids extrusion defects caused by local high temperature in the mold; at the same time, the temperature sensor 19 inside the temperature detection block 18 can monitor the mold temperature in real time, which makes it easy for operators to adjust the cooling measures in time and extend the service life of the mold. The feed guide ring 14 inside the feed port 2 can guide the molten plastic smoothly into the semi-extrusion molding cavity 3. The smooth coating 15 inside reduces the friction between the plastic and the mold and avoids dead corners caused by poor melt flow. The discharge guide sleeve 16 inside the discharge port 6 can guide the formed cable, while the venting groove 17 on the outside can discharge the gas generated during the extrusion process, prevent air bubbles from appearing on the cable surface, and further improve product quality. The dustproof sleeve 20 on the outside of the elastic reset member 23 can prevent plastic debris and dust from entering the interior of the elastic reset member 23, avoid dust causing the elastic reset member 23 to get stuck or wear, ensure smooth sliding of the movable mold core 22, and ensure long-term stability of the adjustment-free function.

[0022] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] The foregoing has provided a detailed description of a cable semi-extrusion type adjustment-free mold provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A cable semi-extrusion type adjustment-free mold, characterized in that, include: Mold body (1) The mold body (1) has a feed inlet (2) at the top, a semi-extrusion molding cavity (3) on the inner side of the mold body (1), a core wire positioning hole (4) on one side of the mold body (1), a mold core assembly (5) that does not require adjustment on the inner side of the semi-extrusion molding cavity (3), a discharge port (6) on the other side of the mold body (1), a locking assembly (7) on the outer side of the mold body (1), and a heat dissipation assembly (8) fixedly installed on the outer side of the mold body (1). The adjustable mold core assembly (5) includes a fixed mold core (21), a movable mold core (22), an elastic reset member (23), and a limiting block (24). The fixed mold core (21) is fixedly installed on the inner wall of the semi-extrusion molding cavity (3). The movable mold core (22) is slidably installed on the inner side of the semi-extrusion molding cavity (3). One end of the elastic reset member (23) is fixedly installed on one side of the movable mold core (22), and the other end of the elastic reset member (23) is fixedly installed on the inner wall of the semi-extrusion molding cavity (3). The limiting block (24) is fixedly installed on the inner side of the semi-extrusion molding cavity (3), and the limiting block (24) is in contact with the movable mold core (22). The locking assembly (7) includes a locking bolt (31), a locking nut (32), and a washer (33). The locking bolt (31) passes through the mold body (1). The locking nut (32) is threaded on the outside of the locking bolt (31). The washer (33) is sleeved on the outside of the locking bolt (31) and is located between the locking nut (32) and the mold body (1). The heat dissipation assembly (8) includes heat dissipation fins (41), heat dissipation ducts (42), and thermally conductive silicone pads (43). The heat dissipation fins (41) are fixedly installed on the outside of the mold body (1), the heat dissipation ducts (42) are opened on the inside of the heat dissipation fins (41), and the thermally conductive silicone pads (43) are fixedly installed between the heat dissipation fins (41) and the mold body (1).

2. The cable semi-extrusion type adjustment-free mold according to claim 1, characterized in that, A wear-resistant sleeve (9) is fixedly installed on the inner side of the core wire positioning hole (4).

3. The cable semi-extrusion type adjustment-free mold according to claim 1, characterized in that, A guide slider (10) is fixedly installed on one side of the movable mold core (22), and a guide groove (11) is provided on the inner wall of the semi-extrusion molding cavity (3). The guide slider (10) is slidably installed on the inner side of the guide groove (11).

4. The cable semi-extrusion type adjustment-free mold according to claim 1, characterized in that, Both the fixed mold core (21) and the movable mold core (22) have arc-shaped bonding surfaces (12) on their inner sides, and the inner side of the arc-shaped bonding surfaces (12) is provided with a polishing layer (13).

5. The cable semi-extrusion type adjustment-free mold according to claim 1, characterized in that, A feed guide ring (14) is fixedly installed on the inner side of the feed inlet (2), and a smooth coating (15) is provided on the inner wall of the feed guide ring (14).

6. The cable semi-extrusion type adjustment-free mold according to claim 1, characterized in that, A discharge guide sleeve (16) is fixedly installed on the inner side of the discharge port (6), and an exhaust groove (17) is provided on the outer side of the discharge guide sleeve (16).

7. The cable semi-extrusion type adjustment-free mold according to claim 1, characterized in that, A temperature detection block (18) is fixedly installed on the outer side of the mold body (1), and a temperature sensor (19) is fixedly installed on the inner side of the temperature detection block (18).

8. The cable semi-extrusion type adjustment-free mold according to claim 1, characterized in that, The elastic reset member (23) is a spring, and a dustproof sleeve (20) is provided on the outer side of the elastic reset member (23).

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