Double-color co-extrusion machine head of cable insulation layer

Abstract

The utility model discloses a bicolor co-extrusion machine head of a cable insulation layer, a diverter is matched with an assembly cavity on a machine head body, after the diverter is fixed with the machine head body, a gap is reserved between the peripheral surface of the diverter and the assembly cavity, a first pouring gate communicated with the assembly cavity is arranged at the top of the machine head body, and a second pouring gate communicated with the assembly cavity is arranged at the bottom of the machine head body. A first main runner and a first branch runner are arranged on the circumferential face of the flow divider, the first pouring gate is matched with the first main runner, the first branch runner is communicated with the first main runner, the first branch runner is matched with the clearance, the die head is connected with the machine head body, a through hole for a cable core to penetrate through is formed in the die head, and a second pouring gate communicated with the assembly cavity is arranged on the side face of the machine head body. A second main runner and a second sub-runner are further arranged on the circumferential surface of the flow divider, the second main runner is matched with the second pouring gate, the second sub-runner is communicated with the second main runner, and the second sub-runner is matched with the clearance. According to the utility model, during extrusion molding, a double-color cable core can be manufactured without mixing insulating materials with different colors.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable manufacturing technical field, especially a kind of double-color co-extrusion head of cable insulation layer. BACKGROUND

[0002] In the wire and cable industry, due to the need of color identification, different colors of insulation cores are needed to distinguish, especially double-color wire and cable. However, in the current production process of double-color wire and cable, only one extruder is generally used to extrude the sheath of double-color wire and cable by mixing the main color sheath material and the auxiliary color sheath material through the conventional die. This method is prone to core deviation, unclear mixing of main and auxiliary colors, unclear boundary, difficult control of wire outer diameter, poor electrical performance of insulation layer, and other situations. The produced wire and cable is prone to failure during operation, and the installation and removal of the die sleeve and die core of the conventional die need to be performed twice, which is extremely inconvenient. SUMMARY

[0003] The utility model provides a kind of double-color co-extrusion head of cable insulation layer, the utility model can manufacture double-color cable core without mixing different color insulation material during extrusion.

[0004] The double-color co-extrusion head of cable insulation layer includes a head body, a flow divider with a hollow cavity, and a die. The head body has an assembly cavity inside. The flow divider cooperates with the assembly cavity on the head body. After the flow divider is fixed with the head body, a gap is left between the peripheral surface of the flow divider and the assembly cavity. The top of the head body is provided with a first runner that penetrates the assembly cavity. The peripheral surface of the flow divider is provided with a first main runner and a first branch runner. The first runner cooperates with the first main runner. The first branch runner communicates with the first main runner. The first branch runner cooperates with the gap. The die is connected with the head body. The die is provided with a through hole for the cable core to pass through. The side surface of the head body is provided with a second runner that penetrates the assembly cavity. The peripheral surface of the flow divider is further provided with a second main runner and a second branch runner. The second main runner cooperates with the second runner. The second branch runner communicates with the second main runner. The second branch runner cooperates with the gap.

[0005] Further, the assembly cavity is provided with a slot, and the peripheral surface of the flow divider is provided with a protruding part to prevent the first main runner and the second main runner from being installed reversely. The protruding part cooperates with the slot.

[0006] Further, the die is further provided with a die core. One end of the die core is connected with the hollow cavity on the flow divider, and the other end of the die core cooperates with the assembly cavity.

[0007] Further, the die is further provided with a support rod and a hinge for connecting with a feeder. The support rod is fixed with the head body, and the hinge is fixed with the support rod.

[0008] Further, the hinge comprises a hinge body, a connecting seat for connecting with the feeder, one end of the hinge body is fixed with the supporting rod, and the other end of the hinge body is hinged with the connecting seat.

[0009] The first main flow channel, the first shunt channel, the second main flow channel and the second shunt channel are reasonably arranged, so that the insulating material is evenly coated on the conductor, and the different colors are clearly separated. When extruding, the double-color cable core can be manufactured without mixing the insulating materials of different colors, so that the manufacturing is simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a front view of the double-color co-extrusion head of the cable insulating layer in the utility model.

[0011] Figure 2 It is a sectional view of the double-color co-extrusion head of the cable insulating layer in the utility model.

[0012] Figure 3 It is a structure diagram of the shunt.

[0013] Figure 4 It is a structure diagram of the shunt in another direction.

[0014] Figure 5 It is a structure diagram of the supporting rod and the hinge.

[0015] Markings in the drawings:

[0016] Head body 1, assembly cavity 1a, first runner 1b, second runner 1c, slot 1d, gap 1e, shunt 2, first main flow channel 2a, first shunt channel 2b, second main flow channel 2c, second shunt channel 2d, hollow cavity 2e, protruding part 2f, die 3, die core 4, supporting rod 5, hinge 6, hinge body 6a, connecting seat 6b, conductor A, cable B. DETAILED DESCRIPTION

[0017] As Figures 1 to 5 The utility model discloses a cable insulation layer's bicolour co -extrusion machine head, including machine head body 1, the flow divider 2 with hollow cavity 2e, die 3, the inside of machine head body 1 is equipped with assembly cavity 1a, the flow divider 2 with the assembly cavity 1a on machine head body 1 cooperation, the flow divider 2 with machine head body 1 fixed, and the gap 1e is left between the peripheral surface of flow divider 2 and assembly cavity 1a after, the top of machine head body 1 is equipped with with assembly cavity 1a the first runner 1b that penetrates, the peripheral surface of flow divider 2 is equipped with first main runner 2a and first runner 2b, and the first runner 1b is cooperated with first main runner 2a, and first runner 2b is communicated with first main runner 2a, and first runner 2b is cooperated with gap 1e, and die 3 is connected with machine head body 1, and die 3 is equipped with the through -hole 3a that cable B passes, the side of machine head body 1 is equipped with with assembly cavity 1a the second runner 1c that penetrates, the peripheral surface of flow divider 2 is still equipped with second main runner 2c, second runner 2d, and second main runner 2c is cooperated with second runner 1c, and second runner 2d is communicated with second main runner 2c, and second runner 2d is cooperated with gap 1e.

[0018] In the utility model, the first main runner 2a, the first runner 2b are arranged on the flow divider 2, and the second main runner 2c, the second runner 2d are further arranged on the flow divider 2, when extruding, for example, conductor A passes through the flow divider 2 and the die 3, the insulating material of the first color is injected into the first main runner 2a through the first runner 1b, and the insulating material of the second color is injected into the second main runner 2c through the second runner 1c. The insulating material of the first color flows into the first runner 2b along the first main runner 2a, then flows from the first runner 2b to the surface of the flow divider 2, passes through the gap 1e to reach the through-hole 3a, and the insulating material of the first color coats the conductor A. At the same time, the insulating material of the second color flows into the second runner 2d along the second main runner 2c, then flows from the second runner 2d to the surface of the flow divider 2, passes through the gap 1e to reach the through-hole 3a, and the insulating material of the second color coats the conductor A, and finally the cable B is output from the through-hole 3a. Since the insulating materials of the two colors are separated, the insulating material is alternately coated on the surface of the conductor. It can be seen that the utility model reasonably arranges the first main runner 2a, the first runner 2b, the second main runner 2c, and the second runner 2d, so that the insulating material uniformly coats the conductor A, and the different colors are clearly separated. Moreover, when injection molding, the insulating materials of different colors do not need to be mixed to manufacture the bicolored cable core, so that the manufacturing is simple and convenient.

[0019] Since different colors of insulating material are injected in the two injection channels, and the volume of the first main channel 2a is smaller than that of the second main channel 2c, and the volume of the first branch channel 2b is smaller than that of the second branch channel 2d, when the flow distributor 2 is installed into the assembly cavity 1a, it needs to be installed correctly, not only to make the first runner 1b cooperate with the first main channel 2a, but also to make the second main channel 2c cooperate with the second runner 1c.

[0020] In the utility model, the assembly cavity 1a is equipped with a slot 1d, and the flow distributor 2 is equipped with a convex part 2f on the circumferential surface to prevent the first main channel 2a and the second main channel 2c from being installed reversely, and the convex part 2f cooperates with the slot 1d. After the convex part 2f cooperates with the slot 1d, the first main channel 2a and the second main channel 2c can be prevented from being installed reversely, thereby ensuring that the first runner 1b cooperates with the first main channel 2a, and the second main channel 2c cooperates with the second runner 1c.

[0021] The utility model also comprises a mold core 4, one end of the mold core 4 is connected with the hollow cavity 2e on the flow distributor 2, and the other end of the mold core 4 cooperates with the assembly cavity 1a. By selecting different mold cores 4 to connect with the flow distributor 2, cable cores of different diameters can be extruded, and therefore the utility model has the advantage of wide application range.

[0022] Since the feeder (not shown in the figure) can be connected with different extrusion heads, in order to facilitate the replacement of the double-color co-extrusion head, the utility model also comprises a supporting rod 5 and a hinge 6 for connecting with the feeder, the supporting rod 5 is fixed with the head body 1, and the hinge 6 is fixed with the supporting rod 5. Preferably, the hinge 6 comprises a hinge body 6a and a connecting seat 6b for connecting with the feeder, one end of the hinge body 6a is fixed with the supporting rod 5, and the other end of the hinge body 6a is hingedly connected with the connecting seat 6b.

[0023] When replacing, the bolts fastening the head body 1 and the feeder are disassembled, since the hinge 6 is connected with the feeder as a whole, only a pushing force needs to be applied to the head body 1 to make the head body 1 rotate under the action of the hinge 6, so that the whole co-extrusion head moves away from the feeding port of the feeder, but the co-extrusion head will not be separated from the feeder under the action of the supporting rod 5 and the hinge 6, when it is needed to connect the co-extrusion head with the feeder, the co-extrusion head is combined with the feeding port of the feeder after being rotated, and fastening with bolts can be adopted.

[0024] The above only discloses a preferred embodiment of the present application, and of course cannot limit the scope of the utility model, and those skilled in the art can understand that all or part of the structures of the above-mentioned embodiment are implemented, and equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A double-color co-extrusion head for cable insulation layer, comprising a head body (1), a flow divider (2) with a hollow cavity (2e), a die (3), the head body (1) is internally provided with an assembly cavity (1a), the flow divider (2) is matched with the assembly cavity (1a) on the head body (1), after the flow divider (2) is fixed with the head body (1), a gap (1f) is left between the peripheral surface of the flow divider (2) and the assembly cavity (1a), the top of the head body (1) is provided with a first runner (1b) penetrating through the assembly cavity (1a), the peripheral surface of the flow divider (2) is provided with a first main runner (2a) and a first branch runner (2b), the first runner (1b) is matched with the first main runner (2a), the first branch runner (2b) is communicated with the first main runner (2a), the first branch runner (2b) is matched with the gap (1f), the die (3) is connected with the head body (1), the die (3) is provided with a through hole (3a) for the cable core (B) to pass through, characterized in that, The head body (1) is provided with a second runner (1c) penetrating the assembly cavity (1a), the peripheral surface of the flow distributor (2) is further provided with a second main runner (2c) and a second branch runner (2d), the second main runner (2c) is matched with the second runner (1c), the second branch runner (2d) is communicated with the second main runner (2c), and the second branch runner (2d) is matched with the gap (1f).

2. The bi-color co-extrusion head for cable insulation layers according to claim 1, characterized in that The assembly cavity (1a) is provided with a slot (1d), the peripheral surface of the flow distributor (2) is provided with a convex part (2f) for preventing the first main runner (2a) and the second main runner (2c) from being reversely assembled, and the convex part (2f) is matched with the slot (1d).

3. The bi-color co-extrusion head for cable insulation layers according to claim 1, characterized in that, Further comprising a mold core (4), one end of the mold core (4) is connected with a hollow cavity (2e) on the flow distributor (2), and the other end of the mold core (4) is matched with the assembly cavity (1a).

4. The bi-color co-extrusion head for cable insulation layers according to any one of claims 1 to 3, characterized in that Further comprising a support rod (5) and a hinge (6) for being connected with a feeder, the support rod (5) is fixed with the head body (1), and the hinge (6) is fixed with the support rod (5).

5. The bi-color co-extrusion head for cable insulation layers according to claim 4, characterized in that The hinge (6) comprises a hinge body (6a) and a connecting seat (6b) for being connected with the feeder, one end of the hinge body (6a) is fixed with the support rod (5), and the other end of the hinge body (6a) is hingedly connected with the connecting seat (6b).

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