A novel cable extrusion production system

Abstract

The invention relates to a novel cable extrusion production system, comprising a No. 1 extruder, a No. 1 die head connected to the No. 1 extruder, a No. 2 extruder and a No. 2 die head connected to the No. 2 extruder, a shaping mechanism is fixedly connected to the output end side of the No. 1 die head, the shaping mechanism comprises a rolling assembly and a transmission assembly fixedly connected to the rolling assembly, a driving assembly matched with the transmission assembly is further arranged below the No. 1 die head, the driving assembly is used to drive the transmission assembly and synchronously drive the rolling assembly to rotate, and the rolling assembly performs rolling and compacting processing on the outer surface of the cable output by the No. 1 die head in a rotating manner, so that the plastic outside the wire core is more solid and firm, and the safety of the middle wire core is more effectively protected.

Description

Technical Field

[0001] The invention relates to the technical field of cable extrusion production, in particular to a novel cable extrusion production system. Background Art

[0002] With the rapid development of all walks of life, cables have become a common and indispensable item in daily life. Cables have a wide variety of uses, ranging from charging daily mobile phones and other electronic products to equipment installation, power transmission and other functions.

[0003] The existing production process flow of most cables with smaller diameters is that the wire core is wrapped and fused with the hot-melt plastic extruded by the extruder in an extrusion die, the wire core and the wrapped plastic are separated from the die and then water-cooled in a water-cooling area for shaping, and finally a high-voltage test is performed to check whether the plastic of the outer ring of the wire core is resistant to high pressure. The tested cables are manually inspected to see if there are quality defects such as burning and cracking on the outer surface. If there are defects, the problematic cable segments need to be manually cut off and discarded. In order to solve the quality defects of the plastic of the outer ring of the above-mentioned cables, the present invention provides a novel cable extrusion production system. Summary of the invention

[0004] The design purpose of the present invention is to provide a novel cable extrusion production system, in which the wire core is preliminarily wrapped with plastic in the No. 1 die head and input into the shaping mechanism. After the preliminarily wrapped cable enters the shaping mechanism, the plastic insulation layer on the outside of the wire core is rolled and compacted by a rotating roller assembly. The firmness of the plastic insulation layer on the outer ring of the wire core is enhanced by the compaction treatment, which is more conducive to protecting the safety of the internal wire core. At the same time, the cable after the rolling treatment enters the No. 2 die head for secondary plastic wrapping. The secondary plastic wrapping makes the appearance of the cable smoother. After the above treatment, the performance of the cable is more stable under high-pressure environment, reducing the quality defects that often occur in the outer ring of the existing cable.

[0005] In view of the above technical problems, the technical solutions adopted by the present invention are as follows:

[0006] A novel cable extrusion production system comprises a No. 1 extruder, a No. 1 die head connected to the No. 1 extruder, a No. 2 extruder and a No. 2 die head connected to the No. 2 extruder, a shaping mechanism is fixedly connected to the output end side of the No. 1 die head, the shaping mechanism comprises a rolling assembly and a transmission assembly fixedly connected to the rolling assembly, a driving assembly matched with the transmission assembly is further arranged below the No. 1 die head, the driving assembly is used to drive the transmission assembly and synchronously drive the rolling assembly to rotate, and the rolling assembly performs rolling compaction processing on the outer surface of the cable output by the No. 1 die head by rotating;

[0007] The shaping mechanism comprises a shaping die head fixedly connected to the output end of the first die head, and a plastic outlet channel is also provided in the shaping die head;

[0008] The rolling assembly comprises a plurality of rolling cylinders rotatably arranged in the shaping die head, wherein the inner end and the outer end of the rolling cylinder are respectively provided with a circular slider and a rolling head;

[0009] The circular slider is rotatably arranged on the rolling cylinder, the number of the circular slider is not less than two, and a slide groove matching the circular slider is provided in the shaping die head;

[0010] The connecting end surface between the rolling head and the rolling cylinder is arranged in an arc shape;

[0011] The transmission assembly comprises a connecting rod fixedly arranged on the outer side of the roller pressing head, one end of the connecting rod is fixedly connected to a transmission gear, and a through hole is opened in the center of the transmission gear;

[0012] The driving assembly includes a rotating motor and a rotating shaft driven by the rotating motor, one end of the rotating shaft is fixedly connected to a driving gear meshing with the transmission gear, and a plurality of fixed rotation limit seats are also arranged on the rotating shaft;

[0013] The wire core enters the No. 1 die 2 and is wrapped and fused with the plastic extruded by the No. 1 extruder 1. Then, the cable after the preliminary wrapping is output from the No. 1 die 2 and passes through the shaping mechanism 5. The transmission component in the shaping mechanism 5 is driven synchronously by the driving component 6 to drive the rolling component fixedly connected thereto to rotate in a circle. The cable passes through the rolling head 513 in the rolling component to roll and compact the plastic on its surface which is in the shaping stage. Then, the rolled cable enters the No. 2 die 4 again, and the outer ring is wrapped and reinforced with an outer layer of plastic by the plastic extruded by the No. 2 extruder 3.

[0014] As a preference, a first injection channel and a second injection channel are respectively provided in the first die head and the second die head, and the output port diameter of the second injection channel is larger than the output port diameter of the first injection channel.

[0015] As another preferred embodiment, a wire core delivery port opened in the No. 1 die head is further provided on one side of the No. 1 injection channel, and a cable delivery port opened in the No. 2 die head is further provided on one side of the No. 2 injection channel, and the cable delivery port has the same caliber as the output end of the No. 1 injection channel.

[0016] Beneficial effects of the present invention:

[0017] 1. The present invention drives the transmission component to rotate synchronously through the drive component, and the transmission component drives the roller pressing component to rotate in a circle in the No. 1 die head. The cable formed by the newly fused wire core and plastic in the No. 1 die head is compacted by the rotation of the roller pressing component, so that the plastic outside the wire core is more solid and firm, and the safety of the middle wire core is more effectively protected. Then, a layer of plastic is wrapped around the outer side of the cable again through the No. 2 die head to form a two-layer plastic wrapping of an outer layer and an inner layer, which greatly improves the service life of the cable.

[0018] 2. A pair of circular sliders are arranged at the inner end of the rolling cylinder of the present invention. When the rolling cylinder rotates synchronously with the transmission gear, the circular sliders are limitedly rotated in the slide groove of the No. 1 die head, and the circular sliders are rotatably arranged on the rolling cylinder, which is beneficial to reducing the friction force when rotating in the slide groove, thereby ensuring the long-term and stable rolling rotation of the rolling cylinder.

[0019] 3. The connecting end surface of the roller head and the roller cylinder of the present invention is set in an arc shape. Before the wire core and the plastic are initially fused and wrapped and approach the roller head for roller compaction, the setting of the arc end surface can ensure that the initially fused cable approaches the roller head at a gentle angle and cooperates with the roller head to roll and compact it, thereby protecting the cable surface and preventing the plastic layer from being damaged due to excessive angle.

[0020] In summary, the new cable extrusion production system has the advantages of ingenious design, simple structure, efficient and stable use, etc., and is particularly suitable for the field of cable extrusion production technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a structural diagram of a new cable extrusion production system;

[0023] Figure 2 It is a structural schematic diagram of the shaping mechanism;

[0024] Figure 3 It is a cross-sectional structural schematic diagram of the shaping mechanism;

[0025] Figure 4 is a schematic diagram of the structure of the transmission component;

[0026] Figure 5 is a schematic diagram of the structure of the drive component;

[0027] Figure 6 Schematic diagram of the cross-sectional structure of die head No. 1;

[0028] Figure 7 It is a schematic diagram of the cross-sectional structure of the No. 2 die head;

[0029] Figure 8 This is a schematic diagram of the state when the cable just enters the shaping mechanism;

[0030] Fig. 9 This is a schematic diagram of the effect of the outer ring of the cable after being compacted by the roller head. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings. Embodiment 1

[0032] like Figures 1 to 9 As shown, a novel cable extrusion production system comprises a No. 1 extruder 1, a No. 1 die head 2 connected to the No. 1 extruder 1, a No. 2 extruder 3 and a No. 2 die head 4 connected to the No. 2 extruder 3, a shaping mechanism 5 is fixedly connected to the output end side of the No. 1 die head 2, the shaping mechanism 5 comprises a rolling assembly and a transmission assembly fixedly connected to the rolling assembly, a driving assembly 6 matched with the transmission assembly is further arranged below the No. 1 die head 2, the driving assembly 6 is used to drive the transmission assembly and synchronously drive the rolling assembly to rotate, and the rolling assembly performs rolling compaction treatment on the outer surface of the cable output by the No. 1 die head 2 by rotating;

[0033] The shaping mechanism 5 comprises a shaping die 53 fixedly connected to the output end of the first die 2, and a plastic outlet channel 531 is also provided in the shaping die 53;

[0034] The rolling assembly includes a plurality of rolling cylinders 511 rotatably disposed in a shaping die head 53, and a circular slider 512 and a rolling head 513 are disposed at the inner and outer ends of the rolling cylinders 511, respectively;

[0035] The round slider 512 is rotatably arranged on the roller cylinder 511, and the number of the round sliders is not less than two. A slide groove 532 matching the round slider 512 is provided in the shaping die head 53;

[0036] The connecting end surface between the roller pressing head 513 and the roller pressing cylinder 511 is arranged in an arc shape;

[0037] The transmission assembly includes a connecting rod 521 fixedly arranged on the outer side of the roller pressing head 513, one end of the connecting rod 521 is fixedly connected to a transmission gear 522, and a through hole 523 is opened in the center of the transmission gear 522;

[0038] The driving assembly 6 includes a rotating motor 61 and a rotating shaft 62 driven by the rotating motor 61 . One end of the rotating shaft 62 is fixedly connected to a driving gear 63 meshing with the transmission gear 522 . A plurality of fixed rotation limit seats 64 are also provided on the rotating shaft 62 .

[0039] The wire core enters the No. 1 die head 2 and is wrapped and fused with the plastic extruded by the No. 1 extruder 1. Then, the cable after the initial wrapping is output from the No. 1 die head 2 and passes through the shaping mechanism 5. The state of the cable just entering the shaping mechanism 5 is as follows: Figure 8 As shown, the transmission component in the shaping mechanism 5 is synchronously driven by the driving component 6 to drive the roller pressing component fixedly connected thereto to rotate in a circle, and the cable passes through the roller pressing head 513 in the roller pressing component to roll and compact the plastic on its surface in the shaping stage in a full circle, and the outer circle of the cable is compacted and rounded as shown in FIG. Fig. 9 As shown, the contact between the cable and the wire core is more firm and solid. Then, the cable after rolling enters the No. 2 die head 4 again, and the plastic extruded by the No. 2 extruder 3 is used to wrap and reinforce the outer ring with an outer layer of plastic. The whole cable consists of two layers, an inner layer and an outer layer, and the inner layer has better protection after rolling and compaction. After the outer layer is wrapped, the appearance of the whole cable is smooth and the stability is further improved, thereby increasing the service life of the cable and reducing quality defects such as scorching due to high-voltage detection, exposed wire core and plastic damage.

[0040] Here, the present invention drives the transmission component to rotate synchronously through the drive component 6, and the transmission component drives the roller pressing component to rotate in a circle in the No. 1 die 2. The cable formed by the newly fused wire core and plastic in the No. 1 die 2 is compacted by the rotation of the roller pressing component, so that the plastic outside the wire core is more solid and firm, and the safety of the middle wire core is more effectively protected. Then, a layer of plastic is wrapped around the outside again through the No. 2 die 4 to form a two-layer plastic wrapping of an outer layer and an inner layer, which greatly improves the service life of the cable.

[0041] Refer to the attached Figure 2 and attached Figure 3 The diameter of the plastic outlet channel 531 changes from large to small along the path through which the cable passes, and the cable is rolled in a matching manner in cooperation with the rolling assembly.

[0042] Refer to the attached Figure 2 and attached Figure 3 The circular slider 512 is used to assist the roller pressing cylinder 511 in rotating in the shaping die head 53, and the roller pressing head 513 is used to roll and compact the initially fused cable outer ring plastic.

[0043] Refer to the attached Figure 2 The circular slider 512 is rotatably arranged in the slide groove 532, and grease is applied between the two. When the circular slider 512 rotates in the slide groove 532, the friction force is smaller. The number of circular sliders 512 is not less than two. Multiple circular sliders 512 are rotatably arranged in the slide groove 532 to ensure the rotation stability of the rolling cylinder 511, and ensure the uniformity of the plastic wall thickness when rolling and compacting the cable.

[0044] Refer to the attached Figure 3The angle between the rolling head 513 and the rolling cylinder 511 in the horizontal direction is 5 to 10 degrees. Within this angle range, the rolling head 513 can roll and compact the outer ring plastic layer of the preliminarily fused cable.

[0045] It should be pointed out that the connecting end surface of the roller head 513 and the roller cylinder 511 of the present invention is set in an arc shape. Before the wire core and the plastic are initially fused and wrapped and approach the roller head for rolling and compaction, the setting of the arc end surface can ensure that the initially fused cable approaches the roller head at a gentle angle and cooperates with the roller head to roll and compact it, thereby protecting the cable surface and preventing the plastic layer from being damaged due to excessive angle.

[0046] Refer to the attached Figure 3 and attached Figure 4 The transmission gear 522 is fixedly connected to the roller head 513 through the connecting rod 521. The transmission gear 522 rotates to drive the roller head 513 and the roller cylinder 511 to rotate in a circle along the slide groove 532 to achieve roller compaction of the cable.

[0047] It should be pointed out that a pair of circular sliders 512 are provided at the inner end of the rolling cylinder 511 of the present invention. When the rolling cylinder 511 rotates synchronously with the transmission gear 522, the circular slider 512 rotates within the slide groove 532 of the first die head 2, and the circular slider 512 is rotatably arranged on the rolling cylinder 511, which is beneficial to reducing the friction force when rotating in the slide groove 532, thereby ensuring the long-term stable rolling rotation of the rolling cylinder 511.

[0048] Refer to the attached Figure 5 The rotating motor 61 drives the driving gear 63 fixedly connected thereto to rotate through the rotating shaft 62, and the driving gear 63 drives the transmission gear 522 meshing therewith to rotate. Grease is applied between the driving gear 63 and the transmission gear 522 to reduce the friction between the two when the gears rotate. Embodiment 2

[0049] like Figure 6 to Figure 7 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The difference between the second embodiment and the first embodiment is that:

[0050] Refer to the attached Figure 6 and attached Figure 7 Specifically, the No. 1 die 2 and the No. 2 die 4 are respectively provided with a No. 1 injection channel 21 and a No. 2 injection channel 41. The output port diameter of the No. 2 injection channel 41 is larger than the output port diameter of the No. 1 injection channel 21. The No. 1 injection channel 21 is used for preliminary plastic wrapping of the wire core, and the No. 2 injection channel 41 is used for another outer ring wrapping of the initially fused and wrapped cable to make it more solid and stable and increase its service life.

[0051] See attached Figure 6 and attached Figure 7 Specifically, a wire core delivery port 22 opened in the No. 1 die head 2 is also provided on one side of the No. 1 injection channel 21, and a cable delivery port 42 opened in the No. 2 die head 4 is also provided on one side of the No. 2 injection channel 41, and the cable delivery port 42 has the same caliber as the output end of the No. 1 injection channel 21.

[0052] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0053] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0054] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A novel cable extrusion production system, comprising a No. 1 extruder (1), a No. 1 die head (2) connected to the No. 1 extruder (1), a No. 2 extruder (3) and a No. 2 die head (4) connected to the No. 2 extruder (3), characterized in that: The output end side of the No. 1 die head (2) is fixedly connected with a shaping mechanism (5), the shaping mechanism (5) comprising a rolling assembly and a transmission assembly fixedly connected to the rolling assembly, a driving assembly (6) matched with the transmission assembly is also arranged below the No. 1 die head (2), the driving assembly (6) is used to drive the transmission assembly and synchronously drive the rolling assembly to rotate, and the rolling assembly performs rolling compaction processing on the outer surface of the cable output by the No. 1 die head (2) by rotating; The shaping mechanism (5) comprises a shaping die (53) fixedly connected to the output end of the first die (2), and a plastic outlet channel (531) is also provided in the shaping die (53); The rolling assembly comprises a plurality of rolling cylinders (511) rotatably arranged in the shaping die head (53), wherein the inner end and the outer end of the rolling cylinder (511) are respectively provided with a circular slider (512) and a rolling head (513); The circular slider (512) is rotatably mounted on the rolling cylinder (511), the number of the circular sliders (512) is not less than two, and a slide groove (532) matching the circular sliders (512) is provided in the shaping die head (53); The connecting end surface between the rolling head (513) and the rolling cylinder (511) is arranged in an arc shape; The transmission assembly comprises a connecting rod (521) fixedly arranged on the outer side of the roller pressing head (513), one end of the connecting rod (521) being fixedly connected to a transmission gear (522), and a through hole (523) being provided at the center of the transmission gear (522); The driving assembly (6) comprises a rotating motor (61) and a rotating shaft (62) driven by the rotating motor (61); one end of the rotating shaft (62) is fixedly connected to a driving gear (63) meshing with the transmission gear (522); and a plurality of fixed rotation limit seats (64) are also provided on the rotating shaft (62); The cable core enters the No. 1 die head (2) and is wrapped and fused with the plastic extruded by the No. 1 extruder (1). After the initial wrapping is completed, the cable is output from the No. 1 die head (2) and passes through the shaping mechanism (5). The transmission component in the shaping mechanism (5) is driven synchronously by the driving component (6) to drive the roller pressing component fixedly connected thereto to rotate in a circle. The cable passes through the roller pressing head (513) in the roller pressing component to roll and compact the plastic on its surface in the shaping stage. After the rolling, the cable enters the No. 2 die head (4) again and is wrapped and reinforced with an outer layer of plastic by the plastic extruded by the No. 2 extruder (3).

2. A new cable extrusion production system according to claim 1, characterized in that: The first die head (2) and the second die head (4) are respectively provided with a first injection channel (21) and a second injection channel (41), and the output port diameter of the second injection channel (41) is larger than the output port diameter of the first injection channel (21).

3. A novel cable extrusion production system according to claim 2, characterized in that: A wire core delivery port (22) opened in the first die head (2) is also provided on one side of the first injection channel (21), and a cable delivery port (42) opened in the second die head (4) is also provided on one side of the second injection channel (41), wherein the cable delivery port (42) has the same caliber as the output end of the first injection channel (21).

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