Extrusion equipment for flame-retardant cable sheath

Abstract

The invention discloses a flame-retardant cable sheath extrusion device which comprises a workbench, an extruder shell is fixedly arranged at the top of the workbench, and a screw is rotatably arranged in the extruder shell. Through the arrangement of the L-shaped mounting block, the moving plate, the charging barrel, the discharging pipe, a triangular plate, a baffle, a mounting base and a discharging groove, the frequency that a V-shaped plate is driven to reciprocate along with the rotating speed of a screw rod is achieved, so that the flame retardant discharging frequency is adaptively changed, and the effect of changing the flame retardant discharging amount is achieved; when the V-shaped plate reciprocates, accumulated flame retardants are stirred to form a long strip shape and uniformly fall into the blanking groove, so that the flame retardants are prevented from being accumulated together and entering the interior of the extruder shell, the blanking uniformity of the flame retardants is ensured, the flame-retardant effect of the sheath is improved, the surface of the sheath is smooth, the quality of a finished cable sheath product is relatively good, the rejection rate is low, and the cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of cable sheath processing, in particular to extrusion equipment for a flame-retardant cable sheath. Background Art

[0002] Flame-retardant cables refer to cables that, under specified test conditions, when the sample is burned, after the test fire source is removed, the flame spreads only within a limited range, and the residual flame or residual burning can extinguish itself within a limited time. The basic characteristics are: in the event of a fire, it may be burned and unable to operate, but the spread of the fire can be prevented. In layman's terms, if the wire catches fire, the burning can be limited to a local area.

[0003] The invention patent with patent number CN118927565B discloses an extrusion device and an extrusion method for a wear-resistant cable sheath, including a mounting seat, four first supporting legs are arranged on the top of the mounting seat, and an extruder is fixedly arranged on the top of the four first supporting legs; the present invention realizes synchronous adaptive adjustment of the extrusion pressure according to the different sheath thicknesses caused by different head sizes through the setting of a measuring mechanism and a pressure regulating mechanism, thereby ensuring the quality of the cable sheath without manual intervention and adjustment, with a high degree of automation, convenience and speed, and also through the setting of a quantity regulating mechanism, it is possible to adaptively adjust the screw speed according to the thickness of the sheath extruded by the head, thereby automatically achieving adaptive adjustment of the material extrusion amount, meeting the need for more material when extruding a thick sheath, avoiding breakage, bubbles, etc. when extruding a thicker sheath, and at the same time ensuring that there will be no bumps or unevenness on the surface due to excessive material when extruding a thinner sheath.

[0004] The above-mentioned device adaptively adjusts the screw speed according to the thickness of the sheath extruded by the die head. However, after the flame retardant cable sheath in the prior art adjusts the die head to adjust the extruded sheath thickness, the corresponding sheath extrusion speed needs to be changed synchronously. As the extrusion speed changes, the amount of flame retardant added needs to be adjusted synchronously, otherwise it is easy to cause the flame retardant performance of the extruded cable sheath to be uneven, and in severe cases, it may even fail to have a flame retardant effect, or the sheath surface may have cracks, particles, poor toughness and a series of other problems. In addition, the flame retardant in the prior art can only be added from the flame retardant inlet of the extruder, which can easily lead to the accumulation of flame retardant, resulting in poor flame retardant effect of the cable sheath during sheath extrusion, rough and non-smooth surface of the sheath, and reduced overall performance of the mechanical material. Summary of the invention

[0005] The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the present invention is to provide an extrusion device for a flame retardant cable sheath to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an extrusion device for flame-retardant cable sheaths, comprising a workbench, an extruder housing is fixedly arranged on the top of the workbench, a screw is rotatably arranged inside the extruder housing, a cable core is arranged inside the screw, a flame retardant inlet and a material inlet are fixedly arranged on the top of the extruder housing, a telescopic head is arranged at one end of the screw away from the speed regulating mechanism, a U-shaped mounting rod is fixedly arranged on the top of the workbench, a thickness adjustment mechanism is arranged on the U-shaped mounting rod, two mounting racks are slidably arranged on the top of the workbench, and a A speed regulating mechanism for adjusting the extrusion speed of the sheath is provided, a transmission mechanism is provided on the top of the workbench, and an adjusting mechanism is provided on the top of the extruder housing, one of the mounting frames is provided with a slide groove, and two long plates are fixedly provided on the top of the workbench, the adjusting mechanism comprises a reciprocating screw, a reciprocating ring, a T-shaped rod, a V-shaped plate and an adjusting assembly, and the adjusting assembly is provided on the top of the extruder housing, one end of the reciprocating screw is fixedly provided at the end of the second transmission shaft, the reciprocating ring is meshingly sleeved on the reciprocating screw, the T-shaped rod is fixedly provided at the top of the reciprocating ring, and the V-shaped plate is fixedly provided at the end of the T-shaped rod.

[0007] Preferably, the thickness adjustment mechanism includes a connecting rod, an electric push rod and two sealing plates, the connecting rod is fixedly arranged on the top of the telescopic head, the extruder housing is provided with a receiving groove for the connecting rod to slide, the electric push rod is fixedly arranged on the U-shaped mounting rod, the connecting rod slides inside the receiving groove and is fixedly connected to the output shaft of the electric push rod, and the two sealing plates are fixedly arranged on both sides of the connecting rod.

[0008] Preferably, the speed regulating mechanism comprises a first gear, a second gear, a long shaft, a second rack, a first rack, an L-shaped connecting rod, a first bevel gear, a second bevel gear, a driving motor, a mounting bench, an inclined groove and an inclined block. The long shaft is rotatably arranged between two mounting frames, the first gear and the second gear are both fixedly arranged on the long shaft, the first rack is fixedly arranged on the top of the extruder housing, the second rack is slidably arranged on the top of the extruder housing, the L-shaped connecting rod is laterally limited and slidably arranged on the end of the second rack, the driving motor is fixedly arranged on the L-shaped connecting rod, the second bevel gear is fixedly arranged on the end of the output shaft of the driving motor, the first bevel gear is fixedly arranged on one end of the screw, the mounting bench is fixedly arranged on the top of the workbench, the inclined groove is arranged on the mounting bench, the inclined block is fixedly arranged on the bottom of the L-shaped connecting rod, and the inclined block slides inside the inclined groove.

[0009] Preferably, the transmission mechanism includes a first transmission shaft, a third bevel gear, a transmission belt, a second transmission shaft and a fixed plate, the fixed plate is arranged at one end of the extruder housing, the first transmission shaft is rotatably arranged on the fixed plate, the third bevel gear is fixedly arranged on the first transmission shaft, the second transmission shaft is rotatably arranged on two long plates, and the transmission belt is sleeved on the first transmission shaft and the second transmission shaft.

[0010] Preferably, the adjustment component includes an L-shaped mounting block, a movable plate, a charging barrel, a discharge pipe, a triangular plate, a baffle, a mounting seat and a discharge trough. The mounting seat is fixedly arranged on the top of the extruder housing, the discharge trough is arranged on the mounting seat, the baffle is fixedly arranged on the top of the mounting seat, the L-shaped mounting block is fixedly arranged on the top of the extruder housing, the charging barrel is fixedly arranged on the top of the L-shaped mounting block, the V-shaped plate is slidingly matched with the top of the mounting seat, the triangular plate is fixedly arranged on the top of the V-shaped plate, the discharge pipe is fixedly arranged on the top of the triangular plate, the movable plate is fixedly arranged on the top of the discharge pipe, the charging barrel is connected with the discharge pipe, the triangular plate and the movable plate are provided with discharge ports, and one end of the reciprocating screw is rotatably matched with the side wall of the mounting seat.

[0011] Preferably, both ends of the feed chute are inclined.

[0012] Preferably, the T-bar is slidably matched with the slide groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes that the frequency of the V-shaped plate reciprocating with the rotation speed of the screw drives the frequency of the V-shaped plate to change adaptively, thereby achieving the effect of changing the amount of flame retardant discharge, and due to the arrangement of the V-shaped plate, the V-shaped plate moves the accumulated flame retardant when reciprocating, forming a long strip and evenly falling into the discharge trough, avoiding the accumulation of the flame retardant and entering the inside of the extruder housing, ensuring the uniform discharge of the flame retardant, improving the flame retardant effect of the sheath, making the sheath surface smooth, the cable sheath finished product quality is good, the scrap rate is low, and the cost is saved, and the flame retardant frequency is adapted to the rotation speed of the screw through the arrangement of the transmission mechanism; The invention realizes synchronous regulation of the screw speed according to the thickness change of the extruded sheath by setting the speed regulating mechanism, and adaptively regulates the screw speed according to the thickness of the extruded sheath, with high automation and strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal cross-sectional structure of the extruder housing of the present invention; Figure 3 It is a schematic diagram of the speed regulating mechanism structure of the present invention; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 It is a schematic diagram of the positional relationship between the transmission mechanism and the amount adjustment mechanism of the present invention; Figure 6 It is a schematic diagram of the overall structure of the amount adjustment mechanism of the present invention.

[0015] In the figure: 1, workbench; 2, mounting frame; 3, thickness adjustment mechanism; 31, connecting rod; 32, electric push rod; 33, sealing plate; 4, transmission mechanism; 41, first transmission shaft; 42, third bevel gear; 43, transmission belt; 44, second transmission shaft; 45, fixing plate; 5, speed regulating mechanism; 51, first gear; 52, second gear; 53, long shaft; 54, second rack; 55, first rack; 56, L-shaped connecting rod; 57, first bevel gear; 58, second bevel gear; 59, driving motor; 510, Mounting stool; 511, inclined slot; 512, inclined block; 6, adjusting mechanism; 61, reciprocating screw; 62, reciprocating ring; 63, T-bar; 64, V-plate; 65, L-shaped mounting block; 66, moving plate; 67, loading barrel; 68, feeding pipe; 69, triangular plate; 610, baffle; 611, mounting seat; 612, feeding chute; 7, U-shaped mounting rod; 8, cable core; 9, extruder housing; 91, telescopic head; 92, screw; 10, long plate; 11, flame retardant inlet; 12, slide; 13, material inlet. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-Figure 6, an embodiment of the present invention: an extrusion device for a flame-retardant cable sheath, comprising a workbench 1, an extruder housing 9 is fixedly arranged on the top of the workbench 1, a screw 92 is rotatably arranged inside the extruder housing 9, a cable core 8 is arranged inside the screw 92, a flame retardant inlet 11 and a material inlet 13 are fixedly arranged on the top of the extruder housing 9, a telescopic head 91 is arranged at one end of the screw 92 away from the speed regulating mechanism 5, a U-shaped mounting rod 7 is fixedly arranged on the top of the workbench 1, a thickness adjusting mechanism 3 is arranged on the U-shaped mounting rod 7, two mounting frames 2 are slidably arranged on the top of the workbench 1, and a device for adjusting the sheath extrusion is arranged between the two mounting frames 2 The speed regulating mechanism 5 includes a transmission mechanism 4 on the top of the workbench 1, an adjusting mechanism 6 on the top of the extruder housing 9, a slide groove 12 on one of the mounting frames 2, two long plates 10 fixedly arranged on the top of the workbench 1, the adjusting mechanism 6 includes a reciprocating screw 61, a reciprocating ring 62, a T-shaped rod 63, a V-shaped plate 64 and an adjusting assembly, the adjusting assembly is arranged on the top of the extruder housing 9, one end of the reciprocating screw 61 is fixedly arranged at the end of the second transmission shaft 44, the reciprocating ring 62 is meshingly sleeved on the reciprocating screw 61, the T-shaped rod 63 is fixedly arranged on the top of the reciprocating ring 62, and the V-shaped plate 64 is fixedly arranged at the end of the T-shaped rod 63. First, add the material into the material inlet 13, add the flame retardant into the adjusting mechanism 6, control the thickness adjusting mechanism 3 to adjust the cable extrusion thickness as needed, synchronously drive the mounting frame 2 to slide through the thickness adjusting mechanism 3, the sliding of the mounting frame 2 drives the speed regulating mechanism 5 to synchronously adjust the speed of the screw 92, the synchronous speed regulating mechanism 5 drives the transmission mechanism 4 to work, the transmission mechanism 4 drives the adjusting mechanism 6 to work, the synchronous speed regulating mechanism 5 works to drive the screw 92 to rotate to extrude and heat the material, the synchronous traction machine pulls the cable core 8 to move, the screw 92 rotates so that the plastic particles are melted into a colloid and extruded from the end of the extruder housing 9, as the traction machine drives the cable core 8 to move, the colloid is wrapped on the cable core 8, and then it is cooled through the cooling water tank.

[0018] Specifically, the thickness adjustment mechanism 3 includes a connecting rod 31, an electric push rod 32 and two sealing plates 33. The connecting rod 31 is fixedly arranged on the top of the telescopic head 91. The extruder housing 9 is provided with a receiving groove for the connecting rod 31 to slide. The electric push rod 32 is fixedly arranged on the U-shaped mounting rod 7. The connecting rod 31 slides inside the receiving groove and is fixedly connected to the output shaft of the electric push rod 32. The two sealing plates 33 are fixedly arranged on both sides of the connecting rod 31. The connecting rod 31 is driven to move synchronously by the movement of the output shaft of the electric push rod 32. The movement of the connecting rod 31 drives the sealing plates 33 and the telescopic head 91 to move synchronously, so that the gap between the mechanism and the extruder housing 9 is adjusted, thereby adjusting the thickness of the extruded jacket; the thickness of the extruded jacket is quickly adjusted by the setting of the telescopic head 91, and the sealing performance of the extruder housing 9 is ensured during adjustment by the setting of the sealing plates 33.

[0019] Specifically, the speed regulating mechanism 5 includes a first gear 51, a second gear 52, a long shaft 53, a second rack 54, a first rack 55, an L-shaped connecting rod 56, a first bevel gear 57, a second bevel gear 58, a driving motor 59, a mounting bench 510, an inclined slot 511 and an inclined block 512. The long shaft 53 is rotatably arranged between the two mounting frames 2, the first gear 51 and the second gear 52 are both fixedly arranged on the long shaft 53, the first rack 55 is fixedly arranged on the top of the extruder housing 9, and the second rack 54 is slidably arranged on the extruder housing 9. At the top of the casing 9, the L-shaped connecting rod 56 is laterally limited and slidably set at the end of the second rack 54, the driving motor 59 is fixedly set on the L-shaped connecting rod 56, the second bevel gear 58 is fixedly set at the end of the output shaft of the driving motor 59, the first bevel gear 57 is fixedly set at one end of the screw 92, the mounting stool 510 is fixedly set on the top of the workbench 1, the inclined groove 511 is set on the mounting stool 510, the inclined block 512 is fixedly set at the bottom of the L-shaped connecting rod 56, and the inclined block 512 is located inside the inclined groove 511 and slides. The movement of the connecting rod 31 drives the mounting frame 2 to move, and the movement of the mounting frame 2 drives the long shaft 53 and the first gear 51 and the second gear 52 to move synchronously. Since the first rack 55 is fixedly arranged, the first gear 51 rotates while moving, thereby driving the long shaft 53 and the second gear 52 to rotate synchronously, and the rotation of the second gear 52 drives the second rack 54 to move, and the movement of the second rack 54 drives the L-shaped connecting rod 56 and the inclined block 512 to move synchronously, and the movement of the L-shaped connecting rod 56 drives the driving motor 59 and the second bevel gear 58 to move synchronously, so that the output shaft of the driving motor 59 rotates to drive the second bevel gear 58 to rotate, and the rotation of the second bevel gear 58 drives the first bevel gear 57 to rotate, and the meshing position of the second bevel gear 58 and the first bevel gear 57 changes, so that the transmission ratio of the two changes, thereby causing the rotation speed of the first bevel gear 57 to change accordingly; it realizes the synchronous adjustment of the rotation speed of the screw 92 by the thickness change of the extruded sheath, and the screw 92 speed is adaptively adjusted according to the thickness of the extruded sheath, with a high degree of automation and strong adaptability.

[0020] Specifically, the transmission mechanism 4 includes a first transmission shaft 41, a third bevel gear 42, a transmission belt 43, a second transmission shaft 44 and a fixed plate 45. The fixed plate 45 is arranged at one end of the extruder housing 9, the first transmission shaft 41 is rotatably arranged on the fixed plate 45, the third bevel gear 42 is fixedly arranged on the first transmission shaft 41, the second transmission shaft 44 is rotatably arranged on two long plates 10, and the transmission belt 43 is sleeved on the first transmission shaft 41 and the second transmission shaft 44. The third bevel gear 42 is driven to rotate by the rotation of the first bevel gear 57, the third bevel gear 42 is driven to rotate by the rotation of the first transmission shaft 41, and the first transmission shaft 41 is driven to rotate by the transmission belt 43 to drive the second transmission shaft 44 to rotate; the flame retardant frequency is adapted to the rotation speed of the screw 92.

[0021] Specifically, the adjustment component includes an L-shaped mounting block 65, a movable plate 66, a charging barrel 67, a discharge pipe 68, a triangular plate 69, a baffle 610, a mounting seat 611 and a discharge trough 612. The mounting seat 611 is fixedly arranged on the top of the extruder housing 9, the discharge trough 612 is arranged on the mounting seat 611, the baffle 610 is fixedly arranged on the top of the mounting seat 611, the L-shaped mounting block 65 is fixedly arranged on the top of the extruder housing 9, the charging barrel 67 is fixedly arranged on the top of the L-shaped mounting block 65, the V-shaped plate 64 is slidably matched with the top of the mounting seat 611, the triangular plate 69 is fixedly arranged on the top of the V-shaped plate 64, the discharge pipe 68 is fixedly arranged on the top of the triangular plate 69, the movable plate 66 is fixedly arranged on the top of the discharge pipe 68, the charging barrel 67 is connected with the discharge pipe 68, the triangular plate 69 and the movable plate 66 are provided with discharge ports, and one end of the reciprocating screw 61 is rotatably matched with the side wall of the mounting seat 611. The reciprocating screw rod 61 is driven to rotate by the rotation of the second transmission shaft 44, and the reciprocating screw rod 61 drives the reciprocating ring 62 to reciprocate, and the reciprocating ring 62 drives the T-shaped rod 63 and the V-shaped plate 64 to reciprocate synchronously. The reciprocating movement of the V-shaped plate 64 drives the triangular plate 69, the discharge pipe 68 and the moving plate 66 to move synchronously. When the moving plate 66 moves to the bottom of the charging barrel 67, the discharge port is aligned with the charging barrel 67, and the flame retardant inside the charging barrel 67 falls between the V-shaped plates 64, and the flame retardant is evenly transferred to the discharge trough 612 and then moves along the flame retardant inlet 1 through the reciprocating movement of the V-shaped plate 64. 1 enters the interior of the extruder housing 9; the frequency of the reciprocating movement of the V-shaped plate 64 driven by the rotation speed of the screw 92 is realized, so that the frequency of the flame retardant feeding is adaptively changed, thereby achieving the effect of changing the amount of flame retardant feeding, and due to the setting of the V-shaped plate 64, the V-shaped plate 64 will move the accumulated flame retardant when it moves back and forth, forming a long strip and evenly falling into the feeding trough 612, avoiding the flame retardant from piling up and entering the interior of the extruder housing 9, ensuring the uniform feeding of the flame retardant, improving the flame retardant effect of the sheath, making the sheath surface smooth, the cable sheath finished product quality is good, the scrap rate is low, and the cost is saved.

[0022] Specifically, the two ends of the material discharge chute 612 are inclined, so that the flame retardant can be discharged smoothly when being moved, and the flame retardant is prevented from accumulating on both sides of the material discharge chute 612 .

[0023] Specifically, the T-shaped rod 63 is slidably matched with the slide groove 12 .

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An extrusion device for flame-retardant cable sheath, comprising a workbench (1), an extruder housing (9) fixedly arranged on the top of the workbench (1), a screw (92) rotatably arranged inside the extruder housing (9), a cable core (8) arranged inside the screw (92), a flame retardant inlet (11) and a material inlet (13) fixedly arranged on the top of the extruder housing (9), characterized in that: A telescopic head (91) is provided at one end of the screw rod (92) facing away from the speed regulating mechanism (5); a U-shaped mounting rod (7) is fixedly provided on the top of the workbench (1); a thickness regulating mechanism (3) is provided on the U-shaped mounting rod (7); two mounting frames (2) are slidably provided on the top of the workbench (1); a speed regulating mechanism (5) for adjusting the extrusion speed of the sheath is provided between the two mounting frames (2); a transmission mechanism (4) is provided on the top of the workbench (1); a volume regulating mechanism (6) is provided on the top of the extruder housing (9); a slide groove is provided on one of the mounting frames (2). (12), two long plates (10) are fixedly arranged on the top of the workbench (1), the adjusting mechanism (6) comprises a reciprocating screw (61), a reciprocating ring (62), a T-shaped rod (63), a V-shaped plate (64) and an adjusting assembly, the adjusting assembly is arranged on the top of the extruder housing (9), one end of the reciprocating screw (61) is fixedly arranged on the end of the second transmission shaft (44), the reciprocating ring (62) is meshingly sleeved on the reciprocating screw (61), the T-shaped rod (63) is fixedly arranged on the top of the reciprocating ring (62), and the V-shaped plate (64) is fixedly arranged on the end of the T-shaped rod (63).

2. The flame retardant cable sheath extrusion device according to claim 1, characterized in that: The thickness adjustment mechanism (3) comprises a connecting rod (31), an electric push rod (32) and two sealing plates (33); the connecting rod (31) is fixedly arranged on the top of the telescopic head (91); a receiving groove for the connecting rod (31) to slide is arranged on the extruder housing (9); the electric push rod (32) is fixedly arranged on the U-shaped mounting rod (7); the connecting rod (31) slides inside the receiving groove and is fixedly connected to the output shaft of the electric push rod (32); and the two sealing plates (33) are fixedly arranged on both sides of the connecting rod (31).

3. The flame retardant cable sheath extrusion device according to claim 1, characterized in that: The speed regulating mechanism (5) comprises a first gear (51), a second gear (52), a long shaft (53), a second rack (54), a first rack (55), an L-shaped connecting rod (56), a first bevel gear (57), a second bevel gear (58), a driving motor (59), a mounting bench (510), an inclined groove (511) and an inclined block (512); the long shaft (53) is rotatably arranged between two mounting frames (2); the first gear (51) and the second gear (52) are both fixedly arranged on the long shaft (53); the first rack (55) is fixedly arranged on the top of the extruder housing (9); and the second rack (54) is slidably arranged on the top of the extruder housing (9). The L-shaped connecting rod (56) is slidably arranged at the end of the second rack (54) in a transverse limited manner at the top of the extruder housing (9), the driving motor (59) is fixedly arranged on the L-shaped connecting rod (56), the second bevel gear (58) is fixedly arranged on the end of the output shaft of the driving motor (59), the first bevel gear (57) is fixedly arranged on one end of the screw (92), the mounting stool (510) is fixedly arranged on the top of the workbench (1), the inclined groove (511) is arranged on the mounting stool (510), the inclined block (512) is fixedly arranged at the bottom of the L-shaped connecting rod (56), and the inclined block (512) is located inside the inclined groove (511) and slides.

4. The flame retardant cable sheath extrusion device according to claim 1, characterized in that: The transmission mechanism (4) comprises a first transmission shaft (41), a third bevel gear (42), a transmission belt (43), a second transmission shaft (44) and a fixed plate (45); the fixed plate (45) is arranged at one end of the extruder housing (9); the first transmission shaft (41) is rotatably arranged on the fixed plate (45); the third bevel gear (42) is fixedly arranged on the first transmission shaft (41); the second transmission shaft (44) is rotatably arranged on two long plates (10); and the transmission belt (43) is sleeved on the first transmission shaft (41) and the second transmission shaft (44).

5. The flame retardant cable sheath extrusion device according to claim 1, characterized in that: The amount adjustment component comprises an L-shaped mounting block (65), a movable plate (66), a charging barrel (67), a feeding tube (68), a triangular plate (69), a baffle (610), a mounting seat (611) and a feeding trough (612), wherein the mounting seat (611) is fixedly arranged on the top of the extruder housing (9), the feeding trough (612) is arranged on the mounting seat (611), the baffle (610) is fixedly arranged on the top of the mounting seat (611), the L-shaped mounting block (65) is fixedly arranged on the top of the extruder housing (9), and the charging barrel (67) is fixedly arranged on the top of the extruder housing (9). The V-shaped plate (64) is fixedly arranged on the top of the L-shaped mounting block (65), the V-shaped plate (64) is slidably matched with the top of the mounting seat (611), the triangular plate (69) is fixedly arranged on the top of the V-shaped plate (64), the feed tube (68) is fixedly arranged on the top of the triangular plate (69), the movable plate (66) is fixedly arranged on the top of the feed tube (68), the loading barrel (67) is connected to the feed tube (68), the triangular plate (69) and the movable plate (66) are provided with a feed port, and one end of the reciprocating screw rod (61) is rotatably matched with the side wall of the mounting seat (611).

6. The flame retardant cable sheath extrusion device according to claim 5, characterized in that: Both ends of the material discharge chute (612) are arranged at an inclination.

7. The flame retardant cable sheath extrusion equipment according to claim 1, characterized in that: The T-shaped rod (63) is slidably matched with the slide groove (12).

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