BTTZ rigid fireproof cable curling, forming and straightening device

Abstract

The utility model relates to the field of fireproof cable production devices, in particular to a BTTZ rigid fireproof cable curl forming and straightening device which comprises a frame, a copper strip curl forming mechanism and a magnesium oxide powder compaction assembly. A first support, a second support, a third support, a fourth support, a fifth support and a sixth support are sequentially and fixedly installed at the front end of the frame from top to bottom, the first support is perpendicular to the second support, a copper core drawing assembly is fixed to the first support, the second support and the third support, a magnesium oxide powder adding assembly is fixed to the fourth support, and a copper core drawing assembly is fixed to the fifth support. The device has the advantages that electric control automatic switching of production of cables with different pipe diameters is achieved, concentricity and perpendicularity of copper strip curling forming are improved, friction force of roundness correction forming welded pipes is reduced, and welding precision is improved.

Description

Technical Field

[0001] The utility model relates to the field of fireproof cable production devices, in particular to a BTTZ rigid fireproof cable curling, forming and straightening device. Background Art

[0002] BTTZ rigid fireproof cable crimping and straightening device is used for continuous filling of moisture-proof magnesium oxide powder, crimping of metal strip, straightening of core tube, continuous welding and compaction of magnesium oxide powder for heavy BTTZ copper core copper sheathed mineral insulated cable.

[0003] The existing domestic equipment forming devices are mostly single-group metal strip curling forming mold frames, or two-group metal strip curling forming mold frames. Such a structure needs to dismantle and replace a new mold frame every time a row of specification cables is produced. Moreover, the mold frame is mostly a split mechanism, which is difficult to operate, has low precision, and is prone to failure.

[0004] Therefore, it is necessary to invent a BTTZ rigid fireproof cable curling, forming and straightening device. Utility Model Content

[0005] To this end, the utility model provides a BTTZ rigid fireproof cable curling, forming and straightening device to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a BTTZ rigid fireproof cable curling and straightening device, comprising a frame, a copper strip curling and forming mechanism and a magnesium oxide powder vibration component, the front end of the frame is fixedly installed with a first bracket, a second bracket, a third bracket, a fourth bracket, a fifth bracket and a sixth bracket from top to bottom in sequence, the first bracket and the second bracket are vertically arranged, the first bracket, the second bracket and the third bracket are fixed with a copper core drawing component, the fourth bracket is fixed with a magnesium oxide powder adding component, and the magnesium oxide powder vibration component is fixedly arranged at the bottom of the front end of the frame;

[0007] The copper strip curling and forming mechanism includes a copper strip feeding assembly, a copper strip positioning assembly, a copper strip curling assembly and a copper strip shrinking assembly. The copper strip feeding assembly is arranged on the fifth bracket, the copper strip positioning assembly is fixed on the sixth bracket, the copper strip curling assembly is connected to the front end of the frame through a lateral adjustment assembly, the copper strip shrinking assembly is fixed below the front end of the frame, and the copper strip shrinking assembly is located between the copper strip curling assembly and the magnesium oxide powder compaction assembly.

[0008] Preferably, the copper core drawing assembly includes two groups of first slide rails, each group has two first slide rails, the two groups of first slide rails are respectively fixed to the side end of the first bracket and the front end of the second bracket, the surfaces of the two first slide rails in the same group are slidably connected with the first slide plate, the surfaces of the first slide plates are fixed with the first threaded sleeves, the middle parts of the first bracket and the middle parts of the second bracket are threadedly connected with the first positive and negative bidirectional screw, the first threaded sleeves are symmetrically threadedly connected to the surfaces of the first positive and negative bidirectional screw, the surfaces of the first slide plates are rotatably connected with a plurality of guide wheels, and the plurality of guide wheels are staggered from top to bottom.

[0009] Preferably, the copper core drawing assembly further includes a wire drawing die, which is fixed on the top of the third bracket, is ring-shaped, and is located below a plurality of guide wheels.

[0010] Preferably, the magnesium oxide powder adding component includes a hopper, which is fixed on the top of the fourth bracket. A feeding sleeve vertically penetrates the hopper, and the top end of the feeding sleeve extends to the center of the wire drawing die.

[0011] Preferably, the copper strip feeding assembly includes a guide wheel, which is rotatably arranged on the inner side of the fifth bracket, and a feed port is provided on the frame, and the guide wheel corresponds to the feed port in front and back.

[0012] Preferably, the copper strip positioning assembly includes a second bidirectional screw with positive and negative threads, which is rotatably connected to the sixth bracket. The second bidirectional screw with positive and negative threads is symmetrically threaded on both sides of the surface of the second bidirectional screw with positive and negative threads and is symmetrically threaded with a second threaded sleeve. A limiting rod is also laterally fixed on the sixth bracket, and the limiting rod passes through the second threaded sleeve. A positioning clamp is fixed to the front end of the second threaded sleeve.

[0013] Preferably, the lateral adjustment component includes a panel, which is fixed to the lower side of the front end of the frame, and a lateral guide rail is symmetrically fixed to the front end of the panel, and a base plate is slidably connected to the surface of the lateral guide rail, and an electric push rod is laterally fixed to the inner side of the frame, and the output shaft of the electric push rod is fixedly connected to the rear end of the base plate.

[0014] Preferably, the copper strip curling assembly includes four groups of seventh brackets, which are fixed to the front end of the bottom plate from left to right in sequence, and each group of the seventh brackets has a plurality of seventh brackets, and the plurality of seventh brackets in the same group are arranged from top to bottom, and a first bearing seat is fixed to the rear side of the interior of the seventh bracket, and a rear copper strip shaping wheel is fixed to the rotating shaft of the first bearing seat, and an eighth bracket is fixed to the surface of the seventh bracket at the two corners at the top of the bottom plate, and a servo motor is fixed to the side end of the eighth bracket, and the output shaft of the servo motor is fixed to the corresponding rotating shaft of the first bearing seat The first bearing seat shaft is connected, and a transmission sprocket is fixed on the corresponding surface of the first bearing seat shaft, and a driven sprocket is fixed on the surface of the first bearing seat shaft located below, and the transmission sprocket and the driven sprocket are connected by chain transmission. The front side of the interior of the seventh bracket is slidably connected to the second bearing seat, and the front end of the seventh bracket is threadedly connected to an adjusting screw, and the rear end of the adjusting screw is rotatably connected to the front end of the second bearing seat, and the second bearing seat shaft is fixed with a front copper belt shaping wheel, and several of the front copper belt shaping wheels and several rear copper belt shaping wheels correspond to each other front to back.

[0015] Preferably, the copper strip diameter reducing assembly comprises a ninth bracket, the ninth bracket is fixed to the lower side of the front end of the frame, the ninth bracket is located below the bottom plate, and a sizing die is fixed to the inner side of the ninth bracket.

[0016] Preferably, the magnesium oxide powder compaction assembly includes a motor box, which is fixed at the bottom of the front end of the frame, and the motor box is located below the ninth bracket. A motor bracket is fixed inside the motor box, a variable frequency motor is fixed at the end of the motor bracket, and an eccentric wheel is fixed to the output shaft of the variable frequency motor. There are two rocker arms symmetrically rotating at the front end of the motor box, and the rear ends of the rocker arms are rotatably connected to the eccentric wheels. Pendulums are fixed to the bottom ends of the rocker arms, and the bottom end of the feeding sleeve vertically passes through the front and rear corresponding front copper belt shaping wheels of the same group in sequence, and the bottom end of the feeding sleeve passes between the two pendulums.

[0017] The beneficial effects of the utility model are: through the coordinated use of the set frame, the copper strip curling and forming mechanism, the magnesium oxide powder vibration assembly, the first bracket, the second bracket, the third bracket, the fourth bracket, the fifth bracket and the sixth bracket, the copper core drawing assembly, the magnesium oxide powder adding assembly and the lateral adjustment assembly, the following advantages are achieved:

[0018] 1. The integral forming structure and 4 sets of steel strip curling forming structure are adopted, which greatly increases the production range of BTTZ cables and covers almost all national standard BTTZ cable specifications. Large and small cables can be used in one machine, which reduces the investment cost of users.

[0019] 2. The metal strip curling mold frame adopts an integral structure and is fixed on an integral mounting plate. Operators do not need to disassemble and replace the mold frame, which greatly improves production efficiency;

[0020] 3. Realized the automatic switching of electric control for the production of cables with different diameters;

[0021] 4. It improves the concentricity and verticality of the copper strip curling, reduces the friction of the rounded welded pipe, and improves the welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A structural stereogram provided for the utility model;

[0023] Figure 2 A partial structural stereogram of the copper core drawing assembly provided by the utility model;

[0024] Figure 3 A three-dimensional diagram of the structure in the rear view direction provided by the utility model;

[0025] Figure 4 A partial structural stereogram of the copper belt positioning assembly provided by the utility model;

[0026] Figure 5 A three-dimensional diagram of the local structure of the copper strip curling assembly provided by the utility model;

[0027] Figure 6 This is a partial structural stereogram of the magnesium oxide powder compaction assembly provided by the utility model.

[0028] In the figure: 1, frame; 2, first bracket; 3, second bracket; 4, third bracket; 5, fourth bracket; 6, fifth bracket; 7, sixth bracket; 8, first slide rail; 9, first slide plate; 10, first threaded sleeve; 11, first positive and negative thread bidirectional screw; 12, guide wheel; 13, wire drawing die; 14, hopper; 15, feeding sleeve; 16, guide wheel; 17, feed port; 18, second positive and negative thread bidirectional screw; 19, second threaded sleeve; 20, limit rod; 21, positioning clamp; 22, Panel; 23. Horizontal guide rail; 24. Bottom plate; 25. Electric push rod; 26. Seventh bracket; 27. First bearing seat; 28. Rear copper belt shaping wheel; 29. ​​Eighth bracket; 30. Servo motor; 31. Driving sprocket; 32. Driven sprocket; 33. Second bearing seat; 34. Adjusting screw; 35. Front copper belt shaping wheel; 36. Ninth bracket; 37. Sizing die; 38. Motor box; 39. Motor bracket; 40. Frequency conversion motor; 41. Eccentric wheel; 42. Rocker arm; 43. Pendulum. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0030] Please refer to the attached Figure 1-6 The BTTZ rigid fireproof cable curling and straightening device provided by the utility model comprises a frame 1, and also comprises a copper strip curling and forming mechanism and a magnesium oxide powder vibration component. The front end of the frame 1 is fixedly installed with a first bracket 2, a second bracket 3, a third bracket 4, a fourth bracket 5, a fifth bracket 6 and a sixth bracket 7 in sequence from top to bottom. The first bracket 2 and the second bracket 3 are vertically arranged. The first bracket 2, the second bracket 3 and the third bracket 4 are fixed with a copper core drawing component. The fourth bracket 5 is fixed with a magnesium oxide powder adding component. The magnesium oxide powder vibration component is fixed at the bottom of the front end of the frame 1. The copper strip curling and forming mechanism comprises a copper strip feeding component, a copper strip positioning component, a copper strip curling component and a copper strip shrinking component. The copper strip feeding component is arranged on the fifth bracket 6, and the copper strip positioning component is fixed on the sixth bracket 7. The copper strip curling component is connected to the front end of the frame 1 through a lateral adjustment component. The copper strip shrinking component is fixed below the front end of the frame 1, and the copper strip shrinking component is located between the copper strip curling component and the magnesium oxide powder vibration component.

[0031] like Figure 2 As shown, the copper core drawing assembly includes two groups of first slide rails 8, each group of first slide rails 8 has two first slide rails 8, and the two groups of first slide rails 8 are respectively fixed to the side end of the first bracket 2 and the front end of the second bracket 3. The surfaces of the two first slide rails 8 in the same group are slidably connected with the first slide plate 9, and the surfaces of the first slide plate 9 are fixed with the first threaded sleeve 10. The middle part of the first bracket 2 and the middle part of the second bracket 3 are threadedly connected with the first positive and negative tooth bidirectional screw 11, and the first threaded sleeve 10 is symmetrically threadedly connected to the surface of the first positive and negative tooth bidirectional screw 11, that is, when the user rotates the first positive and negative tooth bidirectional screw 11 in the forward and reverse directions, the first threaded sleeve 10 threadedly connected to the surface of the first positive and negative tooth bidirectional screw 11 0 can drive the corresponding first slide plate 9 to move toward or in the opposite direction. The surface of the first slide plate 9 is rotatably connected with a plurality of guide wheels 12. The plurality of guide wheels 12 are staggered from top to bottom, that is, the spacing of the plurality of guide wheels 12 can be adjusted synchronously with the first slide plate 9. The copper core drawing assembly also includes a wire drawing die 13. The wire drawing die 13 is fixed on the top of the third bracket 4. The wire drawing die 13 is annular, and the wire drawing die 13 is located below the plurality of guide wheels 12. Specifically, the bent copper core can be horizontally and vertically straightened by the plurality of guide wheels 12, and then drawn to a copper core of a desired diameter by the wire drawing die 13. The copper core has better ductility, and no waste will appear during the drawing process.

[0032] The magnesium oxide powder adding component includes a hopper 14, which can be used to store the required magnesium oxide powder. The hopper 14 is fixed on the top of the fourth bracket 5. A feeding sleeve 15 vertically penetrates the hopper 14. The top of the feeding sleeve 15 extends to the center of the wire drawing die 13. Specifically, the copper core drawn into the required diameter can be inserted into the feeding sleeve 15, and the magnesium oxide powder in the hopper 14 is transported downward through the feeding sleeve 15. At this time, the magnesium oxide powder wraps the outer side of the copper core;

[0033] like Figure 1 and Figure 3 As shown, the copper strip feeding assembly includes a guide wheel 16, which is rotatably arranged on the inner side of the fifth bracket 6, and a feed port 17 is provided on the frame 1. The guide wheel 16 corresponds to the feed port 17 in front and back. Specifically, the required copper strip can enter through the feed port 17, and then move downward after being guided by the guide wheel 16;

[0034] like Figure 4 As shown, the copper belt positioning assembly includes a second forward and reverse bidirectional screw 18, which is rotatably connected to the sixth bracket 7, and the second forward and reverse bidirectional screw 18 has a second threaded sleeve 19 symmetrically threaded on both sides of the surface, and a limit rod 20 is also transversely fixed on the sixth bracket 7, and the limit rod 20 passes through the second threaded sleeve 19, and a positioning clamping plate 21 is fixed at the front end of the second threaded sleeve 19. Specifically, the user can control the two positioning clamping plates 21 to move toward each other by rotating the second forward and reverse bidirectional screw 18 in the forward and reverse directions, so as to position the steel belt moving downward, and effectively prevent the steel belt from running off;

[0035] like Figure 3 and Figure 5 The lateral adjustment assembly shown includes a panel 22, which is fixed to the lower side of the front end of the frame 1. A lateral guide rail 23 is symmetrically fixed to the front end of the panel 22. A bottom plate 24 is slidably connected to the surface of the lateral guide rail 23. An electric push rod 25 is laterally fixed to the inner side of the frame 1. The electric push rod is an electric drive device that converts the rotary motion of the motor into the linear reciprocating motion of the push rod. The output shaft of the electric push rod 25 is fixedly connected to the rear end of the bottom plate 24. Specifically, when the electric push rod 25 is running, it can drive the bottom plate 24 to move back and forth laterally on the panel 22.

[0036] like Figure 5As shown, the copper strip curling assembly includes four groups of seventh brackets 26, which are fixed to the front end of the bottom plate 24 from left to right in sequence. The number of seventh brackets 26 in each group is several, and several seventh brackets 26 in the same group are arranged from top to bottom. The first bearing seat 27 is fixed to the rear side of the interior of the seventh bracket 26, and the first bearing seat 27 shaft is fixed with a rear copper strip shaping wheel 28. The surface of the seventh bracket 26 located at the two corners of the top of the bottom plate 24 is fixed with an eighth bracket 29, and the side end of the eighth bracket 29 is fixed with a servo motor 30. The output shaft of the servo motor 30 is fixedly connected to the corresponding first bearing seat 27 shaft, and the corresponding first bearing seat 27 shaft surface is fixed with a transmission sprocket 31, and the first bearing seat 27 shaft surface located below is fixed with a driven sprocket 32, and the transmission sprocket 31 and the driven sprocket 32 ​​are connected by a chain (not shown in the figure) transmission cooperation. Specifically, when the servo motor 30 is running, the transmission sprocket 31 and the driven sprocket 32 ​​can drive several rear copper strip shaping wheels 28 to rotate;

[0037] The front side of the interior of the seventh bracket 26 is slidably connected to the second bearing seat 33, and the front end of the seventh bracket 26 is threadedly connected to the adjusting screw 34. The rear end of the adjusting screw 34 is rotatably connected to the front end of the second bearing seat 33. The rotating shaft of the second bearing seat 33 is fixed with a front copper belt shaping wheel 35. A plurality of front copper belt shaping wheels 35 correspond to a plurality of rear copper belt shaping wheels 28 one by one. Specifically, when the rear copper belt shaping wheel 28 is driven to rotate by the servo motor 30, the steel belt can be curled and formed by the use of the corresponding front copper belt shaping wheel 35, and the steel belt can be pulled at the same time. In addition, the user can also adjust the first bearing by adjusting the screw 34. The spacing between the seat 27 and the second bearing seat 33 can be adjusted to adjust the spacing between the front copper strip shaping wheel 35 and the rear copper strip shaping wheel 28 corresponding to the front and rear, so that the steel strip can be curled into finished products with different diameters, and as the bottom plate 24 moves back and forth laterally on the panel 22, the various structures of the above copper strip curling assembly can move back and forth laterally synchronously, that is, the device can accurately move 4 sets of steel strip curling structures, realizing the electric control automatic switching of the production of cables with different diameters, and the 4 sets of steel strip curling structures greatly increase the production range of BTTZ cables, covering almost all national standard BTTZ cable specifications, large and small lines are universal, reducing the user's investment cost;

[0038] The copper strip diameter reduction assembly includes a ninth bracket 36, which is fixed to the lower side of the front end of the frame 1, and is located below the bottom plate 24. A sizing die 37 is fixed to the inner side of the ninth bracket 36. Specifically, under the action of the sizing die 37, the diameter of the curled steel strip can be fixed, and then the curled steel strip is welded and fixed by welding. It should be noted that the welding method and principle are well-known technologies for those skilled in the art, and will not be described in detail. That is, the hanging device improves the concentricity and verticality of the copper strip curling, reduces the friction of the rounded welded pipe, and improves the welding accuracy.

[0039] like Figure 6 As shown, the magnesium oxide powder compaction assembly includes a motor box 38, the motor box 38 is fixed at the bottom of the front end of the frame 1, the motor box 38 is located below the ninth bracket 36, a motor bracket 39 is fixed inside the motor box 38, a variable frequency motor 40 is fixed at the end of the motor bracket 39, an eccentric wheel 41 is fixed to the output shaft of the variable frequency motor 40, the front end of the motor box 38 has two swing rods 42 for symmetrical rotation, the rear ends of the swing rods 42 are rotatably connected to the eccentric wheel 41, the bottom ends of the swing rods 42 are fixed with pendulums 43, and the bottom ends of the feeding sleeves 15 vertically pass through the front and rear relative ends of the same group in sequence. The front copper belt shaping wheel 35 and the rear copper belt shaping wheel 28 correspond, and the bottom end of the feeding sleeve 15 passes through the two pendulums 43. Specifically, when the frequency conversion motor 40 is running, the eccentric wheel 41 can drive the pendulum 42 to rotate back and forth, thereby driving the pendulum 43 to rotate back and forth, and the welded steel belt tube can be intermittently knocked. At this time, the magnesium oxide powder falls out of the feeding sleeve 15 into the steel belt tube, and the steel core enters the steel belt tube from the feeding sleeve 15. Therefore, when the pendulum 43 knocks the steel belt tube, the magnesium oxide powder that falls into the steel belt tube can be vibrated.

[0040] The above is only a preferred embodiment of the utility model. Any person skilled in the art can modify the utility model by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement based on the technical solution of the utility model shall fall within the scope of protection claimed by the utility model.

Claims

1. BTTZ rigid fireproof cable curling and straightening device, comprising a frame (1), characterized in that: It also comprises a copper strip curling and forming mechanism and a magnesium oxide powder vibration assembly, wherein the front end of the frame (1) is fixedly mounted with a first bracket (2), a second bracket (3), a third bracket (4), a fourth bracket (5), a fifth bracket (6) and a sixth bracket (7) in sequence from top to bottom, the first bracket (2) and the second bracket (3) are arranged vertically, the first bracket (2), the second bracket (3) and the third bracket (4) are fixed with a copper core drawing assembly, the fourth bracket (5) is fixed with a magnesium oxide powder adding assembly, and the magnesium oxide powder vibration assembly is fixedly arranged at the bottom of the front end of the frame (1); The copper strip curling and forming mechanism comprises a copper strip feeding assembly, a copper strip positioning assembly, a copper strip curling assembly and a copper strip diameter reducing assembly, wherein the copper strip feeding assembly is arranged on a fifth bracket (6), the copper strip positioning assembly is fixed on a sixth bracket (7), the copper strip curling assembly is connected to the front end of the frame (1) via a lateral adjustment assembly, the copper strip diameter reducing assembly is fixed below the front end of the frame (1), and the copper strip diameter reducing assembly is located between the copper strip curling assembly and the magnesium oxide powder compaction assembly.

2. The BTTZ rigid fireproof cable curling, forming and straightening device according to claim 1 is characterized by: The copper core drawing assembly comprises two groups of first slide rails (8), each group of the first slide rails (8) has two first slide rails (8), the two groups of the first slide rails (8) are respectively fixed to the side ends of the first bracket (2) and the front end of the second bracket (3), the surfaces of the two first slide rails (8) in the same group are slidably connected with the first slide plate (9), the surfaces of the first slide plates (9) are fixed with the first threaded sleeves (10), the middle parts of the first bracket (2) and the middle parts of the second bracket (3) are threadedly connected with the first positive and negative bidirectional screw (11), the first threaded sleeves (10) are symmetrically threadedly connected to the surfaces of the first positive and negative bidirectional screw (11), the surfaces of the first slide plates (9) are rotatably connected with a plurality of guide wheels (12), and the plurality of guide wheels (12) are staggered from top to bottom.

3. The BTTZ rigid fireproof cable curling, forming and straightening device according to claim 2 is characterized by: The copper core drawing assembly also includes a wire drawing die (13), which is fixed on the top of the third bracket (4), and the wire drawing die (13) is ring-shaped, and the wire drawing die (13) is located below a plurality of guide wheels (12).

4. The BTTZ rigid fireproof cable curling, forming and straightening device according to claim 3 is characterized by: The magnesium oxide powder adding component comprises a hopper (14), the hopper (14) is fixed on the top of the fourth bracket (5), a feeding sleeve (15) vertically penetrates the hopper (14), and the top end of the feeding sleeve (15) extends to the center of the wire drawing die (13).

5. The BTTZ rigid fireproof cable curling, forming and straightening device according to claim 4 is characterized in that: The copper strip feeding assembly comprises a guide wheel (16), the guide wheel (16) is rotatably arranged on the inner side of the fifth bracket (6), a feed port (17) is provided on the frame (1), and the guide wheel (16) corresponds to the feed port (17) in front and back.

6. The BTTZ rigid fireproof cable curling, forming and straightening device according to claim 5, characterized in that: The copper strip positioning assembly comprises a second forward and reverse bidirectional screw (18), the second forward and reverse bidirectional screw (18) is rotatably connected to the sixth bracket (7), the second forward and reverse bidirectional screw (18) is symmetrically threadedly connected to the second threaded sleeve (19) on both sides of the surface of the second forward and reverse bidirectional screw (18), a limit rod (20) is also transversely fixed on the sixth bracket (7), the limit rod (20) passes through the second threaded sleeve (19), and a positioning clamp (21) is fixed to the front end of the second threaded sleeve (19).

7. The BTTZ rigid fireproof cable curling, forming and straightening device according to claim 6, characterized in that: The lateral adjustment assembly comprises a panel (22), the panel (22) being fixed to the lower side of the front end of the frame (1), a lateral guide rail (23) being fixed symmetrically up and down to the front end of the panel (22), a bottom plate (24) being slidably connected to the surface of the lateral guide rail (23), an electric push rod (25) being laterally fixed to the inner side of the frame (1), and an output shaft of the electric push rod (25) being fixedly connected to the rear end of the bottom plate (24).

8. The BTTZ rigid fireproof cable curling, forming and straightening device according to claim 7, characterized in that: The copper strip curling assembly comprises four groups of seventh brackets (26), the four groups of the seventh brackets (26) are fixed on the front end of the bottom plate (24) from left to right in sequence, each group of the seventh brackets (26) has a plurality of seventh brackets (26), and the plurality of seventh brackets (26) in the same group are arranged from top to bottom, a first bearing seat (27) is fixed on the inner rear side of the seventh bracket (26), a rear copper strip shaping wheel (28) is fixed on the rotating shaft of the first bearing seat (27), an eighth bracket (29) is fixed on the surface of the seventh bracket (26) located at the two corners at the top of the bottom plate (24), a servo motor (30) is fixed on the side end of the eighth bracket (29), and an output shaft of the servo motor (30) is fixedly connected to the corresponding rotating shaft of the first bearing seat (27). , and a driving sprocket (31) is fixed on the rotating shaft surface of the corresponding first bearing seat (27), and a driven sprocket (32) is fixed on the rotating shaft surface of the first bearing seat (27) located below, and the driving sprocket (31) and the driven sprocket (32) are connected by chain transmission. The front side of the interior of the seventh bracket (26) is slidably connected to the second bearing seat (33) in the front and rear directions, and the front end of the seventh bracket (26) is threadedly connected to the adjusting screw (34), and the rear end of the adjusting screw (34) is rotatably connected to the front end of the second bearing seat (33), and the rotating shaft of the second bearing seat (33) is fixed with a front copper belt shaping wheel (35), and a plurality of the front copper belt shaping wheels (35) and a plurality of the rear copper belt shaping wheels (28) correspond to each other in the front and rear directions.

9. The BTTZ rigid fireproof cable curling, forming and straightening device according to claim 8, characterized in that: The copper strip diameter reduction assembly comprises a ninth bracket (36), the ninth bracket (36) is fixed to the lower side of the front end of the frame (1), the ninth bracket (36) is located below the bottom plate (24), and a sizing die (37) is fixed inside the ninth bracket (36).

10. The BTTZ rigid fireproof cable curling, forming and straightening device according to claim 9, characterized in that: The magnesium oxide powder compaction assembly comprises a motor box (38), the motor box (38) is fixed at the bottom of the front end of the frame (1), the motor box (38) is located below the ninth bracket (36), a motor bracket (39) is fixed inside the motor box (38), a variable frequency motor (40) is fixed at the end of the motor bracket (39), an eccentric wheel (41) is fixed to the output shaft of the variable frequency motor (40), two swing rods (42) are symmetrically rotated at the front end of the motor box (38), the rear ends of the swing rods (42) are rotatably connected to the eccentric wheel (41), the bottom ends of the swing rods (42) are fixed with pendulums (43), the bottom end of the feeding sleeve (15) vertically passes through the front and rear corresponding front copper belt shaping wheels (35) and rear copper belt shaping wheels (28) of the same group in sequence, and the bottom end of the feeding sleeve (15) passes through between the two pendulums (43).

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