Extrusion molding machine for high-temperature-resistant cable production

Abstract

The utility model discloses an extrusion molding machine for producing a high-temperature-resistant cable. The extrusion molding machine comprises a supporting table and a constant-pressure extrusion mechanism, a material barrel is arranged on the upper surface of the supporting table, an extrusion pipe is arranged at a discharging opening in the right end of the material barrel, the right end of the extrusion pipe is connected with a forming mold through a bolt, a feeding pipe is arranged at a feeding opening of the material barrel, a screw is rotationally connected to the middle of the inner wall of the left side of the material barrel, the screw is attached to the inner arc face of the material barrel, and a heat insulation shell is arranged on the outer arc face of the material barrel; and an electric heating ring is arranged in the heat insulation shell and makes contact with the outer arc face of the charging barrel, a single-chip microcomputer is arranged on the front surface of the supporting table, and the input end of the single-chip microcomputer is electrically connected to an external power source. And it is guaranteed that molten plastic is extruded out of the extrusion plastic machine at a certain pressure, the molten plastic is tighter, and the plastic effect of the molten plastic is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high temperature resistant cables, in particular to an extrusion molding machine for producing high temperature resistant cables. Background Art

[0002] High temperature resistant wire and cable is a cable that can normally transmit signals or electrical energy at high temperatures. It usually uses solid or twisted silver-plated or nickel-plated copper wire, a common type of wire. It has the advantages of excellent flame retardancy, aging resistance and long service life. It is widely used in communications, automobiles, motors and construction industries. In the production process of high temperature resistant cables, it is necessary to use an extrusion molding machine to wrap plastic on the surface of the cable to provide protection for the cable; in the prior art, when the extrusion molding machine is used, the plastic particles are first heated to a molten state, and then a certain thrust is applied to the molten plastic to extrude the molten plastic from the inside of the extrusion molding machine. The extruded plastic enters the inside of the molding mold, and the mold is used to shape the molten plastic so that it is wrapped on the surface of the high temperature resistant cable. However, some extrusion molding machines only apply a single direction of thrust to the plastic when extruding the plastic. When there is less plastic, the pressure when the plastic is extruded from the extrusion molding machine is small, and the molten plastic is relatively loose, which affects the shaping effect of the molten plastic. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an extrusion molding machine for producing high-temperature resistant cables, which ensures that the molten plastic is extruded from the extrusion molding machine at a certain pressure, makes the molten plastic more compact, increases the plastic effect of the molten plastic, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extrusion molding machine for producing high-temperature resistant cables, comprising a support platform and a constant-pressure extrusion mechanism;

[0005] Support platform: a barrel is provided on its upper surface, an extrusion tube is provided at the discharge port at the right end of the barrel, a forming mold is connected to the right end of the extrusion tube by bolts, a feeding tube is provided at the feeding port of the barrel, a screw is rotatably connected to the middle of the left inner wall of the barrel, the screw fits the inner arc surface of the barrel, an insulating shell is provided on the outer arc surface of the barrel, an electric heating ring is provided inside the insulating shell, the electric heating ring contacts the outer arc surface of the barrel, a single-chip microcomputer is provided on the front surface of the support platform, the input end of the single-chip microcomputer is electrically connected to the external power supply, and the input end of the electric heating ring is electrically connected to the output end of the single-chip microcomputer;

[0006] Constant pressure extrusion mechanism: It is set between the right end of the screw and the inner arc surface of the extrusion tube. It applies forces in two directions to the molten plastic during the extrusion process to ensure that the molten plastic is extruded from the extrusion plastic machine at a certain pressure, making the molten plastic more compact, increasing the plastic effect of the molten plastic, and improving the production quality of high temperature resistant cables.

[0007] Furthermore, the constant-pressure extrusion mechanism includes a slide groove, a slide column, a conical disk and a material blocking ring. The material blocking ring is arranged on the inner arc surface of the extrusion tube, the slide groove is arranged on the right side of the screw, the interior of the slide groove is laterally slidably connected with the slide column, and a conical disk is arranged on the right end of the slide column. There is a gap between the outer arc surface of the conical disk and the inner arc surface of the extrusion tube, thereby blocking the flow of molten plastic in the extrusion tube.

[0008] Furthermore, the constant-pressure extrusion mechanism also includes a spring, which is movably mounted on the outer arc surface of the slide column, the left end of the spring is fixedly connected to the limiting ring of the slide column, and the right end of the spring is fixedly connected to the inner wall of the slide groove, thereby limiting the pressure required for the molten plastic to flow in the extrusion tube.

[0009] Furthermore, the constant-pressure extrusion mechanism also includes a sealing ring, which is arranged in a mounting hole at the right end of the slide groove, and the inner arc surface of the sealing ring fits with the outer arc surface of the slide column to seal between the slide groove and the slide column.

[0010] Furthermore, the constant pressure extrusion mechanism also includes a push screw, which is arranged on the outer arc surface of the screw rod. The push screw fits the inner arc surface of the extrusion tube to apply force to the molten plastic in the extrusion tube.

[0011] Furthermore, the left and right side surfaces of the retaining ring are both conical arc surfaces, which facilitates the fitting of the retaining ring and the conical disk.

[0012] Furthermore, a reduction motor is provided at the left end of the upper surface of the support platform, the right end of the output shaft of the reduction motor is fixedly connected to the screw, and the input end of the reduction motor is electrically connected to the output end of the single-chip microcomputer to provide power for the rotation of the screw.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the high temperature resistant cable production extrusion molding machine has the following advantages:

[0014] When producing high temperature resistant cables, the electric heating ring is started by the single chip microcomputer to heat the plastic particles to a molten state, and the reduction motor is started at the same time to drive the screw to rotate, push the plastic to move to the right and enter the inside of the extrusion tube. At this time, the conical disk contacts the baffle ring to block the flow of plastic in the extrusion tube. When the plastic fills the inside of the extrusion tube, as the screw continues to rotate, the force exerted by the molten plastic on the conical disk gradually increases, overcoming the elastic force of the spring, separating the conical disk from the baffle ring, and the plastic flows to the right from the gap between the conical disk and the extrusion tube, ensuring that the plastic flows out of the extrusion tube at a certain pressure and enters the forming mold. Finally, the forming mold is used to plasticize the plastic so that it is wrapped around the outer arc surface of the high temperature resistant cable. During the extrusion process of the molten plastic, relative forces are applied to it in two directions to ensure that the molten plastic is extruded from the extrusion plasticizer at a certain pressure, making the molten plastic more compact, increasing the plastic effect of the molten plastic, and improving the production quality of the high temperature resistant cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the front view cross section of the overall device of the utility model;

[0017] Figure 3 This is an enlarged structural diagram of point A of the utility model.

[0018] In the figure: 1 support platform, 2 barrel, 3 extrusion tube, 4 forming mold, 5 feed tube, 6 screw, 7 electric heating ring, 8 insulation shell, 9 constant pressure extrusion mechanism, 91 slide groove, 92 slide column, 93 conical disk, 94 blocking ring, 95 spring, 96 sealing ring, 97 push screw, 10 single chip microcomputer, 11 reduction motor. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 , This embodiment provides a technical solution: a high temperature resistant cable production extrusion molding machine, including a support table 1 and a constant pressure extrusion mechanism 9;

[0021] Support table 1: a barrel 2 is provided on its upper surface, an extrusion tube 3 is provided at the discharge port at the right end of the barrel 2, a forming mold 4 is connected to the right end of the extrusion tube 3 by bolts, a feed tube 5 is provided at the feed port of the barrel 2, a screw 6 is rotatably connected to the middle of the left inner wall of the barrel 2, the screw 6 is fitted with the inner arc surface of the barrel 2, an insulating shell 8 is provided on the outer arc surface of the barrel 2, an electric heating ring 7 is provided inside the insulating shell 8, the electric heating ring 7 is in contact with the outer arc surface of the barrel 2, the plastic particles for production are poured into the barrel 2 through the feed tube 5, the electric heating ring 7 is started, the heat generated by the electric heating ring 7 is used to heat the plastic particles, so that the plastic particles are transformed into a molten state, and at the same time, the rotation of the screw 6 is used to drive While the plastic in the barrel 2 rotates, it pushes the plastic to move to the right, so that the molten plastic enters the inside of the molding die 4 through the extrusion tube 3, and the molding die 4 is used to plasticize the plastic so that it is wrapped around the outer arc surface of the high-temperature resistant cable. The front surface of the support table 1 is provided with a single-chip microcomputer 10, and the input end of the single-chip microcomputer 10 is electrically connected to an external power supply to control the start and stop of the entire device. The input end of the electric heating ring 7 is electrically connected to the output end of the single-chip microcomputer 10. A reduction motor 11 is provided at the left end of the upper surface of the support table 1. The right end of the output shaft of the reduction motor 11 is fixedly connected to the screw 6, and the input end of the reduction motor 11 is electrically connected to the output end of the single-chip microcomputer 10 to provide power for the rotation of the screw 6;

[0022] The fixed-pressure extrusion mechanism 9 is arranged between the right end of the screw 6 and the inner arc surface of the extrusion tube 3. The fixed-pressure extrusion mechanism 9 includes a slide groove 91, a slide column 92, a conical disk 93 and a blocking ring 94. The blocking ring 94 is arranged on the inner arc surface of the extrusion tube 3. The slide groove 91 is arranged on the right side of the screw 6. The slide column 92 is connected to the slide groove 91 in a transverse sliding manner. The right end of the slide column 92 is provided with a conical disk 93. There is a gap between the outer arc surface of the conical disk 93 and the inner arc surface of the extrusion tube 3. The fixed-pressure extrusion mechanism 9 also includes a spring 95. The spring 95 is movably sleeved on the outer arc surface of the slide column 92. The left end of the spring 95 is fixedly connected to the limit ring of the slide column 92, and the right end of the spring 95 is fixedly connected to the inner wall of the slide groove 91. When the plastic fills the inside of the extrusion tube 3, as the screw 6 continues to rotate, the force exerted by the molten plastic on the conical disk 93 gradually increases, overcoming the elastic force of the spring 95, so that the conical disk 93 and the inner arc surface of the extrusion tube 3 are The retaining ring 94 is separated, and the plastic flows to the right from the gap between the conical disk 93 and the extrusion tube 3, ensuring that the plastic flows out of the extrusion tube 3 at a certain pressure. The constant-pressure extrusion mechanism 9 also includes a sealing ring 96, which is arranged in the mounting hole at the right end of the slide groove 91, and the inner arc surface of the sealing ring 96 fits with the outer arc surface of the sliding column 92. The sealing ring 96 is a ceramic sealing ring, which seals the sliding column 92 and the slide groove 91. The constant-pressure extrusion mechanism 9 also includes a pushing screw 97, which is arranged on the outer arc surface of the rod of the screw 6, and the pushing screw 97 fits with the inner arc surface of the extrusion tube 3. The rotation of the pushing screw 97 is used to apply a rightward thrust to the molten plastic in the extrusion tube 3. The left and right sides of the retaining ring 94 are both conical arc surfaces, which prevent the molten plastic from staying on the surface of the retaining ring 94 for a long time, ensure the smooth flow of the molten plastic, and at the same time make the contact between the retaining ring 94 and the conical disk 93 closer.

[0023] The working principle of the high temperature resistant cable production extrusion molding machine provided by the utility model is as follows: when producing high temperature resistant cables, plastic particles for production are poured into the barrel 2 through the feed pipe 5, the electric heating ring 7 is started by the single chip microcomputer 10, and the heat generated by the electric heating ring 7 is used to heat the plastic particles, so that the plastic particles are transformed into a molten state, and the reduction motor 11 is started at the same time, and the output shaft of the reduction motor 11 drives the screw 6 to rotate, driving the plastic in the barrel 2 to rotate, while pushing the plastic to move to the right, so that the molten plastic enters the extrusion tube 3, At this time, the conical disk 93 contacts the baffle ring 94 to block the flow of plastic in the extrusion tube 3. When the plastic fills the inside of the extrusion tube 3, as the screw 6 continues to rotate, the force exerted by the molten plastic on the conical disk 93 gradually increases, overcoming the elastic force of the spring 95, separating the conical disk 93 from the baffle ring 94, and the plastic flows to the right from the gap between the conical disk 93 and the extrusion tube 3, ensuring that the plastic flows out of the extrusion tube 3 at a certain pressure and enters the molding die 4. Finally, the molding die 4 is used to plasticize the plastic so that it is wrapped around the outer arc surface of the high temperature resistant cable.

[0024] It is worth noting that the single chip microcomputer 10 disclosed in the above embodiment can use the PIC16F1823-I / P model single chip microcomputer, the electric heating ring 7 and the reduction motor 11 can be freely configured according to the actual application scenario, the electric heating ring 7 can use the JC-DB-02A model electric heating ring, and the reduction motor 11 can use the 42BYHJ01 model stepping reduction motor. The single chip microcomputer 10 controls the operation of the electric heating ring 7 and the reduction motor 11 using methods commonly used in the prior art.

[0025] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high temperature resistant cable production extrusion molding machine, characterized in that: It comprises a support platform (1) and a constant pressure extrusion mechanism (9); A support platform (1): a material barrel (2) is provided on its upper surface, an extrusion tube (3) is provided at the discharge port at the right end of the material barrel (2), the right end of the extrusion tube (3) is connected to a forming mold (4) by bolts, a feed tube (5) is provided at the feed port of the material barrel (2), a screw rod (6) is rotatably connected to the middle of the left inner wall of the material barrel (2), the screw rod (6) is in contact with the inner arc surface of the material barrel (2), a heat insulating shell (8) is provided on the outer arc surface of the material barrel (2), an electric heating ring (7) is provided inside the heat insulating shell (8), and the electric heating ring (7) is in contact with the outer arc surface of the material barrel (2), a single chip microcomputer (10) is provided on the front surface of the support platform (1), the input end of the single chip microcomputer (10) is electrically connected to an external power supply, and the input end of the electric heating ring (7) is electrically connected to the output end of the single chip microcomputer (10); Constant pressure extrusion mechanism (9): arranged between the right end of the screw (6) and the inner arc surface of the extrusion tube (3).

2. A high temperature resistant cable production extrusion molding machine according to claim 1, characterized in that: The constant pressure extrusion mechanism (9) comprises a slide groove (91), a slide column (92), a conical disk (93) and a material blocking ring (94); the material blocking ring (94) is arranged on the inner arc surface of the extrusion tube (3); the slide groove (91) is arranged on the right side surface of the screw (6); the slide column (92) is connected to the inside of the slide groove (91) in a transverse sliding manner; the right end of the slide column (92) is provided with a conical disk (93); and there is a gap between the outer arc surface of the conical disk (93) and the inner arc surface of the extrusion tube (3).

3. A high temperature resistant cable production extrusion molding machine according to claim 2, characterized in that: The constant-pressure extrusion mechanism (9) also includes a spring (95), which is movably sleeved on the outer arc surface of the slide column (92), the left end of the spring (95) is fixedly connected to the limiting ring of the slide column (92), and the right end of the spring (95) is fixedly connected to the inner wall of the slide groove (91).

4. A high temperature resistant cable production extrusion molding machine according to claim 2, characterized in that: The constant-pressure extrusion mechanism (9) further comprises a sealing ring (96), wherein the sealing ring (96) is arranged in a mounting hole at the right end of the slide groove (91), and an inner arc surface of the sealing ring (96) is in contact with an outer arc surface of the slide column (92).

5. The high temperature resistant cable production extrusion molding machine according to claim 2, characterized in that: The constant-pressure extrusion mechanism (9) further comprises a push screw (97), wherein the push screw (97) is arranged on the outer arc surface of the screw rod (6), and the push screw (97) is in contact with the inner arc surface of the extrusion tube (3).

6. The high temperature resistant cable production extrusion molding machine according to claim 2, characterized in that: The left and right side surfaces of the retaining ring (94) are both conical arc surfaces.

7. The high temperature resistant cable production extrusion molding machine according to claim 1, characterized in that: A reduction motor (11) is provided at the left end of the upper surface of the support platform (1), the right end of the output shaft of the reduction motor (11) is fixedly connected to the screw rod (6), and the input end of the reduction motor (11) is electrically connected to the output end of the single chip computer (10).

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