Plastic extruder for cable processing

Abstract

The invention relates to the technical field of cable processing equipment, and particularly discloses a cable processing plastic extruder which comprises a mounting plate, a plastic extruding machine is fixedly mounted on the mounting plate, an extruding die is fixedly mounted at one end of the plastic extruding machine, and movable clamping devices I located on the two sides of the extruding die are arranged on the mounting plate; and a movable clamping device II located between the two movable clamping devices I is arranged on the mounting plate. The movable clamping device I and the movable clamping device II alternately reciprocate and clamp a cable core at the two ends of the extrusion die to assist in conveying and moving of the cable core, so that the cable core passing through the extrusion die is always kept in a straightened state and is located in the center of the extrusion die, and it is ensured that molten plastic is extruded and formed through the extrusion die to be arranged on the outer side of the cable core in a sleeving mode; compared with an existing plastic extruder for cable processing, the plastic extruder for cable processing has the advantage that the cable processing effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cable processing equipment, and in particular to a plastic extruder for cable processing. Background Art

[0002] Plastic extruders for cable processing are important equipment that are indispensable in the cable production process. They are mainly used to extrude plastic materials into the insulation layer or sheath required for cables through specific processes and molds. With the rapid development of global electronics, communications, power and other industries, the demand for cables has shown a steady growth trend, which provides a broad market space for plastic extruders for cable processing.

[0003] However, when using the existing plastic extruder for cable processing, it is difficult to ensure that the cable is subjected to uniform tension throughout the entire path due to the long distance between the cable core pay-off end and the cable reel end, and only by using the wire wheel wire method. Uneven tension may cause the cable to bend or twist when moving inside the plastic extruder, and long-distance cables are prone to drooping or bending during transmission due to their own weight, especially in the absence of sufficient support, which will affect the uniform wrapping of the plastic. Summary of the invention

[0004] The present application proposes a plastic extruder for cable processing, which has the advantage that the plastic can evenly wrap the cable core, and is used to solve the problem of affecting the uniform wrapping of the plastic in existing equipment.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a plastic extruder for cable processing, comprising a mounting plate, on which an extruder is fixedly mounted, an extrusion die is fixedly mounted at one end of the extruder, both ends of the mounting plate are provided with wire devices, a mobile clamping device I is provided on the mounting plate and is located on both sides of the extrusion die, and the two mobile clamping devices I are located between the two wire devices, a mobile clamping device II is provided on the mounting plate and is located between the two mobile clamping devices I, and the two mobile clamping devices II are respectively arranged on both sides of the extrusion die.

[0006] The mounting plate is provided with a crank-connecting rod mechanism I for driving two mobile clamping devices I to synchronously reciprocate horizontally and a crank-connecting rod mechanism II for driving two mobile clamping devices II to synchronously reciprocate horizontally, and the mobile clamping devices I and II reciprocate alternately.

[0007] When in use, the crank connecting rod mechanism II drives the mobile clamping device II to move in the direction of cable core conveying and clamps the cable core on both sides of the extrusion die, while the crank connecting rod mechanism I drives the mobile clamping device I to move in the opposite direction and separate from the extrusion die.

[0008] When the crank connecting rod mechanism I drives the mobile clamping device I to move in the direction of cable core conveying and clamps the cable core on both sides of the extrusion die, the crank connecting rod mechanism II drives the mobile clamping device II to move in the opposite direction and separate from the extrusion die.

[0009] Furthermore, a cooling pipe is fixedly installed at one end of the extrusion die, and the cooling pipe is located between the two movable clamping devices II.

[0010] Furthermore, the wire guide device includes a positioning horizontal plate fixedly installed on the mounting plate, the positioning horizontal plate is fixed to the mounting plate through an L-shaped fixing plate, a positioning vertical plate is fixedly installed in the middle of the positioning horizontal plate, a rotating shaft is movably mounted on the positioning vertical plate, and a wire guide wheel is fixedly installed at one end of the rotating shaft.

[0011] Furthermore, a positioning transverse axis is fixedly connected between the two positioning transverse plates at both ends of the mounting plate, and the number of the positioning transverse axes is set to two, and the movable clamping device I is movably mounted on the positioning transverse axis.

[0012] Furthermore, the movable clamping device I includes a sliding block movably mounted on the positioning horizontal axis, one side of the sliding block is movably connected to the connecting rod of the crank-connecting rod mechanism I, one end of the sliding block is fixedly installed with an L-shaped connecting plate, and one end of the linkage shaft I passes through the sliding block and is fixedly connected to one side of the L-shaped connecting plate by bolts, and the other side of the L-shaped connecting plate is fixedly installed with two symmetrically arranged positioning L-shaped plates, and the two positioning L-shaped plates are movably mounted on two moving shafts at one end away from the L-shaped connecting plate, one end of the two moving shafts on the positioning L-shaped plate is fixedly connected with a clamping block, and the end of the moving shaft away from the clamping block is fixedly connected with a baffle, a spring movably mounted on the moving shaft is provided between the baffle and the positioning L-shaped plate, an electromagnet located between the two moving shafts is fixedly mounted on the positioning L-shaped plate, a magnetic block located on one side of the electromagnet is fixedly mounted on the clamping block, and the electromagnet and the magnetic block magnetically repel each other.

[0013] Furthermore, a limiting horizontal axis is fixedly connected between the two positioning vertical plates, the number of the limiting horizontal axis is two, and the outer diameter value of the limiting horizontal axis is the same as that of the positioning horizontal axis, the mobile clamping device II is movably mounted on the limiting horizontal axis, and the cooling pipe is located between the two mobile clamping devices II, the two mobile clamping devices II are respectively arranged on both sides of the extrusion mold, and the two mobile clamping devices II are located between the two mobile clamping devices I, and a linkage shaft II is fixedly connected between the two mobile clamping devices II, and the number of the linkage shaft II is set to two.

[0014] Furthermore, the structure of the mobile clamping device II is completely the same as that of the mobile clamping device I, and the mobile clamping device II is designed to be rotated 90 degrees relative to the mobile clamping device I with the cable core passing through the two clamping blocks as the axis.

[0015] Beneficial effects of the present invention:

[0016] 1. The present application provides a plastic extruder for cable processing, which alternately moves back and forth through two mobile clamping devices I and a mobile clamping device II, and clamps the cable core at both ends of the extrusion die to assist the conveying movement of the cable core, so that the cable core passing through the extrusion die is always kept in a straightened state and located in the center of the extrusion die, ensuring that the molten plastic is extruded and molded onto the outside of the cable core through the extrusion die to form a protective layer of uniform thickness. Compared with the existing plastic extruders for cable processing, the processing effect of the cable is improved.

[0017] 2. Through the structural design of the two moving shafts, clamping blocks, spring electromagnets and magnetic blocks in the mobile clamping device I, the two clamping blocks are controlled to clamp the cable core by the magnetic repulsion force of the magnetic block when the electromagnet is energized, and the elastic force of the spring is used to control the two clamping blocks to separate from the cable core when the electromagnet is powered off, without affecting the transportation of the cable core. Therefore, cable cores of different sizes can be clamped and assisted in transportation, ensuring that the cable core passing through the extrusion die is always kept in a straightened state, without the need for adaptive replacement or adjustment of cables of different sizes, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute a part of the specification, illustrate the embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0019] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure after removing two mobile clamping devices I and mobile clamping device II;

[0022] Figure 3 for Figure 1 A schematic diagram of the structure of one of the conductor devices;

[0023] Figure 4 for Figure 1 Schematic diagram of the connection structure of the two mobile clamping devices Ⅰ;

[0024] Figure 5 for Figure 4 The structural diagram of the mobile clamping device I;

[0025] Figure 6 for Figure 5 Right view of;

[0026] Figure 7 for Figure 1Schematic diagram of the connection structure of the two mobile clamping devices II;

[0027] Figure 8 for Figure 7 Schematic diagram of the structure of the mobile clamping device II.

[0028] In the figure:

[0029] 1. Mounting plate; 2. Extruder; 3. Extrusion die; 4. Cooling pipe; 5. Wire guide device; 501. Positioning horizontal plate; 502. Positioning vertical plate; 503. Rotating shaft; 504. Wire guide wheel; 6. Positioning horizontal axis; 7. Mobile clamping device I; 701. Sliding block; 702. L-shaped connecting plate; 703. Positioning L-shaped plate; 704. Mobile shaft; 705. Clamping block; 706. Baffle; 707. Spring; 708. Electromagnet; 709. Magnetic block; 8. Linkage shaft I; 9. Crank-connecting rod mechanism I; 10. Limiting horizontal axis; 11. Mobile clamping device II; 12. Linkage shaft II; 13. Crank-connecting rod mechanism II. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] Example

[0032] See also Figure 1-Figure 2 A plastic extruder for cable processing comprises a mounting plate 1, on which an extruder 2 is fixedly mounted, an extrusion die 3 is fixedly mounted at one end of the extruder 2, the cable core passes through the extrusion die 3, and at the same time, the extruder 2 injects molten plastic into the extrusion die 3, the molten plastic completely covers the outside of the cable core in the extrusion die 3, forms a plastic insulation layer on the outside of the cable core, and is extruded at one end of the extrusion die 3, a cooling pipe 4 is fixedly mounted at one end of the extrusion die 3, a water pipe is connected through the cooling pipe 4, and cooling water is continuously introduced for cooling, so that the cable wrapped around the outside of the cable core can be quickly cooled, and wire devices 5 are arranged at both ends of the mounting plate 1.

[0033] See also Figure 1-Figure 3The conductor device 5 includes a positioning horizontal plate 501 fixedly installed on the mounting plate 1, and the positioning horizontal plate 501 is fixed to the mounting plate 1 through an L-shaped fixing plate, and the L-shaped fixing plate provides stable support for the positioning horizontal plate 501. A positioning vertical plate 502 is fixedly installed in the middle of the positioning horizontal plate 501, and a rotating shaft 503 is movably sleeved on the positioning vertical plate 502. A conductor wheel 504 is fixedly installed at one end of the rotating shaft 503. The cable core is introduced from the conductor wheel 504 at one end of the mounting plate 1, and the cable core and the plastic insulation layer extruded by the extrusion die 3 are led out from the conductor wheel 504 at the other end of the mounting plate 1.

[0034] A positioning horizontal axis 6 is fixedly connected between the two positioning horizontal plates 501 at both ends of the mounting plate 1. Two mobile clamping devices Ⅰ7 are movably mounted on the positioning horizontal axis 6. The two mobile clamping devices Ⅰ7 are respectively arranged on both sides of the extrusion die 3, and the two mobile clamping devices Ⅰ7 are located on the inner sides of the two wire guide devices 5. The number of the positioning horizontal axes 6 is set to two, so that the mobile clamping devices Ⅰ7 can stably move horizontally along the positioning horizontal axis 6. Please refer to Figure 1-Figure 2 , Figure 4-Figure 6 A linkage shaft Ⅰ8 is fixedly connected between the two mobile clamping devices Ⅰ7, so that the two mobile clamping devices Ⅰ7 move synchronously on the positioning horizontal axis 6. The number of linkage shafts Ⅰ8 is set to two, so that the two mobile clamping devices Ⅰ7 can move synchronously stably. A crank-connecting rod mechanism Ⅰ9 close to the cable core introduction end is fixedly installed on the mounting plate 1, and the crank-connecting rod mechanism Ⅰ9 drives the mobile clamping device Ⅰ7 to reciprocate horizontally along the positioning horizontal axis 6.

[0035] The mobile clamping device Ⅰ7 includes a sliding block 701 movably mounted on the positioning horizontal axis 6, one side of the sliding block 701 is movably connected to the connecting rod of the crank connecting rod mechanism Ⅰ9, one end of the sliding block 701 is fixedly installed with an L-shaped connecting plate 702, and one end of the linkage shaft Ⅰ8 passes through the sliding block 701 and is fixedly connected to one side of the L-shaped connecting plate 702 by bolts, and two symmetrically arranged positioning L-shaped plates 703 are fixedly installed on the other side of the L-shaped connecting plate 702, and the two positioning L-shaped plates 703 are movably mounted on one end away from the L-shaped connecting plate 702. Two movable shafts 704 are respectively provided, and the positioning One end of the two movable shafts 704 on the L-shaped plate 703 is fixedly connected with a clamping block 705, and the cable core and the cable pass between the two clamping blocks 705. The end of the movable shaft 704 away from the clamping block 705 is fixedly connected with a baffle 706. A spring 707 movably mounted on the movable shaft 704 is provided between the baffle 706 and the positioning L-shaped plate 703. An electromagnet 708 located between the two movable shafts 704 is fixedly installed on the positioning L-shaped plate 703. A magnetic block 709 located on one side of the electromagnet 708 is fixedly installed on the clamping block 705, and the electromagnet 708 and the magnetic block 709 magnetically repel each other.

[0036] See also Figure 1-Figure 3A limiting horizontal axis 10 is fixedly connected between the two positioning vertical plates 502, the number of the limiting horizontal axis 10 is two, and the outer diameter value of the limiting horizontal axis 10 is the same as that of the positioning horizontal axis 6. Two mobile clamping devices Ⅱ11 are movably mounted on the limiting horizontal axis 10, and the cooling pipe 4 is located between the two mobile clamping devices Ⅱ11. The two mobile clamping devices Ⅱ11 are respectively arranged on both sides of the extrusion mold 3, and the two mobile clamping devices Ⅱ11 are located between the two mobile clamping devices Ⅰ7. The mobile clamping device Ⅱ11 and the mobile clamping device Ⅰ7 are always not in contact. A linkage shaft Ⅱ12 is fixedly connected between the two mobile clamping devices Ⅱ11, and the number of the linkage shaft Ⅱ12 is set to two.

[0037] See also Figure 4-Figure 5 , Figure 7-Figure 8 The structure of the mobile clamping device Ⅱ11 is exactly the same as that of the mobile clamping device Ⅰ7, and the mobile clamping device Ⅱ11 is designed to rotate 90 degrees relative to the mobile clamping device Ⅰ7 with the cable core passing through the two clamping blocks 705 as the axis, so that the linkage shaft Ⅱ12 and the positioning horizontal shaft 6 can be staggered, ensuring that the horizontal movement of the mobile clamping device Ⅰ7 on the positioning horizontal shaft 6 and the horizontal movement of the mobile clamping device Ⅱ11 on the linkage shaft Ⅱ12 do not affect each other. Please continue to refer to Figure 1 A crank-connecting rod mechanism II13 is fixedly mounted on the mounting plate 1 for driving the mobile clamping device II11 to move back and forth horizontally.

[0038] When in use, the cable core is introduced into the extrusion die 3 through the wire wheel 504 at one end of the mounting plate 1, and passes through the extrusion die 3. At the same time, the extruder 2 squeezes the molten plastic into the extrusion die 3, and extrude the cable core from one end of the extrusion die 3. The cable core including the plastic insulation layer is led out from the wire wheel 504 at the other end of the mounting plate 1. During this period, the crank connecting rod mechanism Ⅱ13 drives the two mobile clamping devices Ⅱ11 to move right synchronously, that is, the two mobile clamping devices Ⅱ11 move toward the direction of cable core transportation, and the crank connecting rod mechanism Ⅰ9 drives the two mobile clamping devices Ⅰ7 to move left synchronously, that is, the mobile clamping device Ⅰ7 moves in the opposite direction relative to the mobile clamping device Ⅱ11. At the same time, the electromagnet 708 on the mobile clamping device Ⅱ11 is energized to generate a magnetic repulsion force on the magnetic block 709, so that the two clamping blocks 705 on the mobile clamping device Ⅱ11 clamp the cable core at both ends of the extrusion die 3 to ensure that the cable core passing through the extrusion die 3 is always in a straightened state. The electromagnet 708 on the mobile clamping device Ⅰ7 is powered off, and the spring The elastic force of 707 causes the two clamping blocks 705 on the mobile clamping device I7 to move and separate from the cable core, which does not affect the transportation of the cable. When the crank-connecting rod mechanism II13 drives the two mobile clamping devices II11 to move to the left, that is, the mobile clamping device II11 moves away from the direction of cable core transportation, the electromagnet 708 on the mobile clamping device II11 is powered off, and the two clamping blocks 705 on the mobile clamping device II11 are separated from the cable core. At the same time, the crank-connecting rod mechanism I9 drives the two mobile clamping devices I7 to move to the right, that is, the two mobile clamping devices I7 move toward the direction of cable core transportation. At the same time, the electromagnet 708 on the mobile clamping device I7 is energized to generate a magnetic repulsion force on the magnetic block 709, so that the two clamping blocks 705 on the mobile clamping device I7 clamp the cable core at both ends of the extrusion die 3. This reciprocating process ensures that the cable core passing through the extrusion die 3 is always in a straightened state, so that the molten plastic is extruded and molded onto the outside of the cable core through the extrusion die 3 to form a protective layer with uniform thickness.

Claims

1. A plastic extruder for cable processing, comprising a mounting plate (1), an extruder (2) being fixedly mounted on the mounting plate (1), an extrusion die (3) being fixedly mounted at one end of the extruder (2), characterized in that: Both ends of the mounting plate (1) are provided with a wire guide device (5); the mounting plate (1) is provided with a movable clamping device I (7) located on both sides of the extrusion die (3); and the two movable clamping devices I (7) are located between the two wire guide devices (5); the mounting plate (1) is provided with a movable clamping device II (11) located between the two movable clamping devices I (7); and the two movable clamping devices II (11) are respectively arranged on both sides of the extrusion die (3); The mounting plate (1) is provided with a crank connecting rod mechanism I (9) for driving two movable clamping devices I (7) to synchronously reciprocate horizontally, and a crank connecting rod mechanism II (13) for driving two movable clamping devices II (11) to synchronously reciprocate horizontally, and the movable clamping devices I (7) and the movable clamping devices II (11) are reciprocated alternately; When in use, the crank connecting rod mechanism II (13) drives the movable clamping device II (11) to move in the direction of the cable core conveying and clamps the cable core on both sides of the extrusion die (3), while the crank connecting rod mechanism I (9) drives the movable clamping device I (7) to move in the opposite direction and separate from the extrusion die (3); When the crank connecting rod mechanism I (9) drives the movable clamping device I (7) to move in the direction of cable core conveying and clamps the cable core on both sides of the extrusion die (3), the crank connecting rod mechanism II (13) drives the movable clamping device II (11) to move in the opposite direction and separate from the extrusion die (3).

2. The plastic extruder for cable processing according to claim 1, characterized in that: A cooling pipe (4) is fixedly mounted on one end of the extrusion die (3), and the cooling pipe (4) is located between two movable clamping devices II (11).

3. The plastic extruder for cable processing according to claim 1, characterized in that: The guide wire device (5) comprises a positioning transverse plate (501) fixedly mounted on the mounting plate (1); the positioning transverse plate (501) is fixed to the mounting plate (1) via an L-shaped fixing plate; a positioning vertical plate (502) is fixedly mounted in the middle of the positioning transverse plate (501); a rotating shaft (503) is movably mounted on the positioning vertical plate (502); and a guide wire wheel (504) is fixedly mounted on one end of the rotating shaft (503).

4. The plastic extruder for cable processing according to claim 3, characterized in that: A positioning transverse axis (6) is fixedly connected between the two positioning transverse plates (501) at both ends of the mounting plate (1), and the number of the positioning transverse axes (6) is set to two, and the movable clamping device I (7) is movably mounted on the positioning transverse axis (6).

5. The plastic extruder for cable processing according to claim 4, characterized in that: The movable clamping device I (7) comprises a sliding block (701) movably mounted on the positioning transverse axis (6), one side of the sliding block (701) is movably connected to the connecting rod of the crank connecting rod mechanism I (9), one end of the sliding block (701) is fixedly mounted with an L-shaped connecting plate (702), and one end of the linkage shaft I (8) passes through the sliding block (701) and is fixedly connected to one side of the L-shaped connecting plate (702) by bolts, and the other side of the L-shaped connecting plate (702) is fixedly mounted with two symmetrically arranged positioning L-shaped plates (703), and the ends of the two positioning L-shaped plates (703) away from the L-shaped connecting plate (702) are respectively movably mounted with two movable shafts (70 4), one end of the two moving shafts (704) on the positioning L-shaped plate (703) is fixedly connected with a clamping block (705), one end of the moving shaft (704) away from the clamping block (705) is fixedly connected with a baffle (706), a spring (707) movably mounted on the moving shaft (704) is provided between the baffle (706) and the positioning L-shaped plate (703), an electromagnet (708) located between the two moving shafts (704) is fixedly installed on the positioning L-shaped plate (703), a magnetic block (709) located on one side of the electromagnet (708) is fixedly installed on the clamping block (705), and the electromagnet (708) and the magnetic block (709) are magnetically repelled from each other.

6. The plastic extruder for cable processing according to claim 3, characterized in that: A limiting horizontal axis (10) is fixedly connected between the two positioning vertical plates (502), the number of the limiting horizontal axis (10) is two, and the outer diameter value of the limiting horizontal axis (10) is the same as that of the positioning horizontal axis (6), the movable clamping device II (11) is movably mounted on the limiting horizontal axis (10), and the cooling pipe (4) is located between the two movable clamping devices II (11), the two movable clamping devices II (11) are respectively arranged on both sides of the extrusion mold (3), and the two movable clamping devices II (11) are located between the two movable clamping devices I (7), and a linkage shaft II (12) is fixedly connected between the two movable clamping devices II (11), and the number of the linkage shaft II (12) is set to two.

7. The plastic extruder for cable processing according to claim 6, characterized in that: The structure of the mobile clamping device II (11) is completely the same as that of the mobile clamping device I (7), and the mobile clamping device II (11) is designed to be rotated 90 degrees relative to the mobile clamping device I (7) with the cable core passing through the two clamping blocks (705) as the axis.

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