A forming device for low-smoke and halogen-free sheath material

Abstract

The present invention relates to the technical field of sheath material production, and discloses a forming device for low-smoke and halogen-free sheath materials. The forming device includes a production mechanism for melting and extruding the sheath materials placed therein into long strip-shaped sheath materials; a traction unit connected to the production mechanism; a mounting seat provided on the traction unit, and a cutting mechanism is further provided on the mounting seat; a transportation unit connected to the traction unit. The sheath material particles are raw materials used for the sheaths in cables or wires. By providing the first traction part and the third traction part, the long strip-shaped sheath materials can be guided and limited and sorted. During the movement of the sorting member, the third driving member can adjust the position of the sorting member in the length direction and the radial direction of the limiting rod, so as to support and limit the long strip-shaped sheath materials, and enable multiple bundles of long strip-shaped sheath materials to pass through the corresponding discharge ports, thereby completing the production and processing work of the sheath raw materials for wires and cables.

Description

Technical Field

[0001] The present invention relates to the technical field of sheath material production, and specifically, it is a forming device for low-smoke and halogen-free sheath materials. Background Art

[0002] Sheath material is an external material used to cover and protect electric wires, cables or electronic devices, usually made of polymer compounds such as polyethylene (PE), polyvinyl chloride (PVC), etc. It has good insulation, corrosion resistance, wear resistance and flame retardancy, and can effectively prevent electric wires, cables or electronic devices from being damaged by the external environment, ensuring the safe and stable operation of the circuit.

[0003] For example, the patent application with the publication number CN119136963A discloses a cutting device for cutting extruded plastic profiles: it includes a cutter arranged on a cutter support; a pivot arm, and the cutter support can move towards or away from the extrusion axis together with the cutter by means of the pivot arm; a device for pivoting the pivot arm; the cutter is connected to the cutter support and can be oriented in a plane perpendicular to the extrusion axis via an adjustment part, and / or the cutter is connected to the cutter support and the pivot arm, wherein the pivot arm is arranged on the device for pivoting, and the device for pivoting is an electromechanical drive device, and the electromechanical drive device includes at least one cycloidal drive device, and the cycloidal drive device is directly connected to the actuator.

[0004] However, there are still some problems in the above technical solutions. In the production process of the above-mentioned wire sheath material, by transporting the strip-shaped sheath material to a predetermined cutting area, and then cutting the long strip-shaped sheath material into particles by an existing cutting mechanism. However, due to the different diameters of the required sheath material particles, there are also differences in the diameters of the long strip-shaped sheath materials. The existing cutting method is to set the same number of cutting mechanisms as the long strip-shaped sheath materials to complete the cutting work. When the required diameter of the sheath material particles is small, one cutting mechanism can complete the cutting of multiple long strip-shaped sheath materials. At this time, using the above cutting method will cause waste of resources.

[0005] Therefore, when the required diameter of the sheath material is small, how to enable one cutting mechanism to simultaneously complete the cutting work of multiple long strip-shaped sheath materials is a problem to be solved at present. Summary of the Invention

[0006] The present invention provides a forming device for low-smoke and halogen-free sheath materials to solve the above problems existing in the prior art.

[0007] A forming device for low-smoke and halogen-free sheath materials includes:

[0008] A production mechanism that melts and extrudes the sheath material placed in the production mechanism into a long strip-shaped sheath material;

[0009] A traction unit, connected to the production mechanism, for combing and limiting the extruded strip-shaped sheath material;

[0010] A mounting seat, arranged on the traction unit, and a cutting mechanism for cutting and forming the strip-shaped sheath material is further arranged on the mounting seat;

[0011] A transportation unit, connected to the traction unit, for receiving the cut sheath material and transporting and handling it, and the sheath material is the raw material used for the sheath in a cable or wire;

[0012] The traction unit includes a placement table, a limiting rod, a first traction part and a third traction part;

[0013] The placement table is located on one side of the production mechanism. A plurality of feeding ports and a plurality of discharging ports are opened on the placement table, and a limiting part for traction and limiting the strip-shaped sheath material is arranged in the discharging port;

[0014] The limiting rod is fixedly installed on the placement table;

[0015] The first traction part and the third traction part are respectively sleeved on the limiting rod. Both the first traction part and the third traction part can guide the strip-shaped sheath material, and the third traction part can also limit and comb the strip-shaped sheath material.

[0016] Further, the first traction part includes a first driving part, a plurality of connecting frames arranged on the first driving part, and two first limiting rings symmetrically arranged on the connecting frames;

[0017] The third traction part includes a third driving part and a combing part arranged on the third driving part;

[0018] The structures of the first driving part and the third driving part are the same;

[0019] Wherein the connecting frame is of a U-shaped structure, and there is a difference in the distance between the two free ends of the U-shaped connecting frame and the first driving part. One end of the connecting frame with a shorter distance is closer to the feeding port than the other end of the connecting frame.

[0020] Further, the first driving part includes a rotating motor fixedly installed on the placement table, a rotating seat connected to the output end of the rotating motor, an eccentric shaft arranged at a non-central position of the rotating seat, a driven sliding rail connected to the eccentric shaft, two first sliding rods symmetrically arranged on the driven sliding rail, and a sliding seat for connecting the first sliding rod and the limiting rod;

[0021] Wherein the length direction of the first sliding rod is perpendicular to the length direction of the limiting rod;

[0022] By means of the eccentric shaft arranged on the rotating seat, the driven slide rail can move synchronously in the axial and radial directions of the limiting rod, so that the positions of the first limiting ring and the carding member can be adjusted.

[0023] Furthermore, the number of the carding members is multiple;

[0024] The carding member includes a fixed seat fixedly installed on the third driving member, a sliding seat arranged on the fixed seat, and a second limiting ring arranged on the sliding seat and slidably connected to the sliding seat, a driving wheel and two driven wheels respectively arranged on the fixed seat, a driving belt for connecting the driving wheel and the driven wheels, and a limiting motor connected to the driving wheel and arranged on the fixed seat;

[0025] There is a gap between the driven wheel and the outer wall of the second limiting ring, and the driving belt is located in this gap. The movement of the driving belt drives the second limiting ring to move on the sliding seat;

[0026] The second limiting ring is provided with a chute, and the sliding seat is provided with an arc-shaped protrusion adapted to the chute;

[0027] The sliding seat and the fixed seat are provided with through holes for the long strip-shaped sheath material to pass through.

[0028] Furthermore, the limiting part includes at least three mounting shafts arranged on the inner wall of the discharge port, hinge seats arranged on the mounting shafts, limiting air cylinders movably connected to the hinge seats, driving blocks arranged at the output ends of the limiting air cylinders, two driving rods symmetrically arranged on the driving blocks and movably connected to the driving blocks, a driving seat for connecting the two driving rods, and a plurality of connecting rods arranged on the driving seat;

[0029] One end of the connecting rod is arranged on the mounting shaft;

[0030] The mounting shaft is provided with kidney-shaped holes, and the driving block is provided with protruding ends adapted to the kidney-shaped holes.

[0031] Furthermore, at least two driving wheels are further arranged on the driving seat, a limiting belt for connecting the driving wheels, and a rotating motor arranged on the driving seat and connected to one of the driving wheels;

[0032] The limiting belt is provided with a plurality of limiting strips;

[0033] The distance between the limiting belt and the long strip-shaped sheath material is adjusted by the limiting air cylinder to limit the long strip-shaped sheath material, and the limiting part pulls the long strip-shaped sheath material through the rotation of the rotating motor, so that it can be located in the cutting area, and the long strip-shaped sheath material is cut by the cutting mechanism.

[0034] Furthermore, a second traction part is also provided on the placement table, and the second traction part is located between the first traction part and the third traction part;

[0035] The second traction part includes a fixing plate fixedly installed on the placement table, telescopic cylinders symmetrically installed on the fixing plate, a connecting piece connected to the output end of the telescopic cylinder, a turning plate connected to the connecting piece and movably connected to the fixing plate, first guide rods uniformly arranged on the turning plate, a connecting block connected to one end of the first guide rods, and second guide rods arranged on the connecting block;

[0036] Wherein placing channels are formed in the first guide rods, the second guide rods and the connecting block, and the placing channel in the connecting block has a certain curvature and a sponge is arranged in the placing channel.

[0037] Furthermore, the transportation unit includes a conveyor, two discharge valves and a blanking box arranged on the conveyor, and a return pipe for connecting one of the discharge valves to the blanking box.

[0038] Furthermore, the conveyor includes two conveying pipes, a driving box for connecting the two conveying pipes, a connecting shaft built in the driving box, a driving gear sleeved on the connecting shaft, a transportation chain sheet for connecting the two driving gears and located in the conveying pipe, and a driving motor arranged on one of the driving boxes and connected to the connecting shaft;

[0039] Wherein the return pipe is connected to the discharge valve near the driving motor for transporting the sheath material remaining in the conveying pipe into the blanking box;

[0040] One of the conveying pipes is a feed pipe and the other is a discharge pipe.

[0041] Beneficial effects: The present invention discloses a forming device for low-smoke and halogen-free sheathing materials. In order to enable a cutting mechanism to simultaneously complete the cutting work of multiple strip-shaped sheathing materials, a traction unit is provided in this device. Through the third traction part in the set traction unit, the die head with different-sized extrusion holes is replaced, thereby extruding strip-shaped sheathing materials with different diameters. Then, the strip-shaped sheathing materials can pass through the traction unit. At this time, according to the diameter of the extrusion hole on the replaced die, the corresponding number of strip-shaped sheathing materials is selected to pass through the third traction part. Then, the limit motor starts to work. The moving limit motor can drive the driving wheel to rotate. The moving driving wheel drives the driven wheel to rotate through the set driving belt. Since the driving belt is located between the driven wheel and the second limit ring, when the driving belt moves, the second limit ring can move on the sliding seat, thereby being able to complete the limiting work on multiple bundles of strip-shaped sheathing materials. After multiple strip-shaped sheathing materials pass through the limiting part, one end of multiple strip-shaped sheathing materials is located in the established cutting area to complete the cutting work. During the movement of the combing part, the third driving part starts to work, which can adjust the position of the combing part in the length direction and radial direction of the limiting rod. First, in the movement in the length direction, according to the deformation amount of the strip-shaped sheathing material, the combing part is moved closer to or away from the second traction part, which can play a role in supporting and limiting the strip-shaped sheathing material. And the movement in the radial direction can adjust the position of the combing part in the length direction of the placing table, so that multiple bundles of strip-shaped sheathing materials pass through the corresponding discharge ports, enabling the cutting mechanism to complete the cutting and forming work of the strip-shaped sheathing materials, and completing the production and processing work of the sheathing raw materials for cables. At this time, one cutting mechanism can complete the cutting work of multiple bundles of sheathing materials, improving work efficiency. Brief Description of the Drawings

[0042] Figure 1 is a schematic structural diagram of a forming device for low-smoke and halogen-free sheathing materials of the present invention;

[0043] Figure 2 is a schematic diagram of the traction unit of the present invention;

[0044] Figure 3 is a schematic structural diagram of the first traction part of the present invention;

[0045] Figure 4 is a schematic structural diagram of the second traction part of the present invention;

[0046] Figure 5 is a schematic structural diagram of the combing part of the present invention;

[0047] Figure 6 is a schematic diagram of the limiting part of the present invention;

[0048] Figure 7 is a three-dimensional view of the limiting part of the present invention;

[0049] Figure 8It is a schematic diagram of the transportation unit of the present invention;

[0050] Figure 9 It is a schematic diagram of the conveyor of the present invention;

[0051] Figure 10 It is a schematic diagram of the rotating seat of the present invention.

[0052] Reference numerals: 1, preheating device; 2, extruder; 3, cooling box; 4, traction unit; 41, placement table; 42, first traction part; 421, rotating motor; 422, rotating seat; 423, eccentric shaft; 424, driven slide rail; 425, first slide bar; 426, sliding seat; 427, connecting frame; 428, first limiting ring; 43, second traction part; 431, fixing plate; 432, telescopic cylinder; 433, connecting piece; 434, turning plate; 435, first guiding rod; 436, second guiding rod; 437, connecting block; 44, third traction part; 441, limiting motor; 442, fixing seat; 443, driving wheel; 444, driven wheel; 445, sliding seat; 446, second limiting ring; 45, limiting part; 451, mounting shaft; 452, hinge seat; 453, limiting cylinder; 454, driving block; 455, driving rod; 456, driving seat; 457, connecting rod; 458, rotating motor; 459, driving wheel; 4510, limiting belt; 46, limiting seat; 5, mounting seat; 6, transportation unit; 61, blanking box; 62, conveyor; 621, conveying pipe; 622, driving box; 623, driving motor; 624, connecting shaft; 625, driving gear; 626, transportation chain plate; 63, discharge valve; 64, return pipe. Detailed implementation manners

[0053] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be made with reference to the accompanying drawings of the specification.

[0054] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0055] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0056] The present invention discloses a forming device for low-smoke and halogen-free sheathing materials. Refer to Figures 1 - 10, a low smoke zero halogen sheath material forming device comprises:

[0057] A production mechanism is provided, which melts the sheath material placed in the production mechanism and extrude the sheath material in the form of long strips; a traction unit 4 is connected to the production mechanism and is used to comb and limit the extruded long strips of sheath material; a mounting seat 5 is arranged on the traction unit 4, and the mounting seat 5 is also provided with a cutting mechanism for cutting and shaping the long strips of sheath material; a transportation unit 6 is connected to the traction unit 4 and is used to receive the sheath material particles after cutting and transport them, and the sheath material particles are the raw materials used for the sheath in the cable or cable; the traction unit 4 includes a placement table 41, a limiting rod, a first traction part 42 and a third traction part 44; the placement table 4 1, located at one side of the production mechanism, a plurality of feed ports and a plurality of discharge ports are provided on the placement table 41, the number of the discharge ports is less than the number of the feed ports, and a limiting portion 45 is arranged in the discharge port for traction and limiting the long strip sheathing material; a limiting rod is fixedly installed on the placement table 41; a first traction portion 42 and a third traction portion 44 are respectively sleeved on the limiting rod, the first traction portion 42 and the third traction portion 44 can both guide the long strip sheathing material, and the third traction portion 44 can also limit and comb the long strip sheathing material; a tubular limiting seat 46 is provided at the feed port, and the limiting seat 46 and the first limiting ring 428 are elastic.

[0058] By setting up a third driving member, the position of the combing member in the length direction and radial direction of the limiting rod can be adjusted. First, in the movement in the length direction, according to the deformation of the long strip sheathing material, the combing member is made close to or away from the second traction part 43, which can play a role in supporting and limiting the long strip sheathing material. The radial movement can adjust the position of the combing member in the length direction of the placement table 41, so that multiple bundles of long strip sheathing materials pass through the corresponding discharge ports, so that the cutting mechanism completes the cutting and forming work of the long strip sheathing materials, and completes the production and processing of the raw materials for cable sheathing; at the same time, one cutting mechanism can complete the cutting work of multiple bundles of sheathing materials, thereby improving work efficiency; by setting up the combing member, the limiting work of multiple bundles of long strip sheathing materials can be completed, and after multiple long strip sheathing materials pass through the limiting part 45, one end of multiple long strip sheathing materials is located in the predetermined cutting area to complete the cutting work.

[0059] The first traction part 42 includes a first driving member, a plurality of connecting frames 427 arranged on the first driving member, and two first limiting rings 428 symmetrically arranged on the connecting frames 427; the third traction part 44 includes a third driving member and a carding member arranged on the third driving member; the structures of the first driving member and the third driving member are the same; wherein the connecting frame 427 is of a U-shaped structure, and there is a difference in the distances between the two free ends of the U-shaped connecting frame 427 and the first driving member, and one end of the connecting frame 427 with a shorter distance is closer to the feeding port relative to the other end of the connecting frame 427; by arranging the U-shaped connecting frame 427, the long strip-shaped sheath material located on the connecting frame 427 is inclined, so that the water droplets attached to it can break away from the sheath material body under the influence of its own weight, and by arranging the first driving member, the supporting position of the connecting frame 427 on the sheath material can be adjusted, avoiding large deformation of the sheath material due to its excessive mass, so that when subsequent cutting and forming are carried out, there is a large inclination angle between the end face of one end of the sheath material and the cutting surface of the cutting mechanism, resulting in the processed sheath material not meeting the established standards.

[0060] The first driving member includes a rotating motor 421 fixedly installed on the placing table 41, a rotating seat 422 connected to the output end of the rotating motor 421, an eccentric shaft 423 arranged at a non-central position of the rotating seat 422, a driven slide rail 424 connected to the eccentric shaft 423, two first slide rods 425 symmetrically arranged on the driven slide rail 424, and a slide seat 426 for connecting the first slide rod 425 and the limiting rod; wherein the length direction of the first slide rod 425 is perpendicular to the length direction of the limiting rod; by arranging the eccentric shaft 423 on the rotating seat 422, the driven slide rail 424 can move synchronously in the axial and radial directions of the limiting rod, so as to adjust the positions of the first limiting ring 428 and the carding member; when the position of the connecting frame 427 needs to be adjusted, at this time the rotating motor 421 starts to work, the moving rotating motor 421 can drive the rotating seat 422 to move, at this time the moving rotating seat 422 can drive the eccentric shaft 423 to move, so as to drive the driven slide rail 424 connected to the eccentric shaft 423 to move, and then with the cooperation of the slide seat 426, the position of the connecting frame 427 in the axial and radial directions of the limiting rod is changed, so as to adjust the supporting position of the connecting frame 427, avoiding excessive deformation of the sheath material when passing through the traction unit 4 and resulting in the failure of the cutting and forming work.

[0061] The number of the carding members is multiple; the carding member includes a fixed seat 442 fixedly installed on the third driving member, a sliding seat 445 arranged on the fixed seat 442, and a second limiting ring 446 arranged on the sliding seat 445 and slidably connected to the sliding seat 445, a driving wheel 443 and two driven wheels 444 respectively arranged on the fixed seat 442, a driving belt for connecting the driving wheel 443 and the driven wheels 444, and a limiting motor 441 connected to the driving wheel 443 and arranged on the fixed seat 442; there is a gap between the driven wheel 444 and the outer wall of the limiting ring, and the driving belt is located in the gap, and the movement of the driving belt drives the second limiting ring 446 to move on the sliding seat 445; a chute is arranged on the limiting ring, and an arc-shaped protrusion adapted to the chute is arranged on the sliding seat 445; through holes for the long strip-shaped sheath material to pass through are arranged on the sliding seat 445 and the fixed seat 442; when the limiting motor 441 starts to work, the moving limiting motor 441 can drive the driving wheel 443 to rotate, and the moving driving wheel 443 drives the driven wheels 444 to rotate through the arranged driving belt. Since the driving belt is located between the driven wheel 444 and the second limiting ring 446, when the driving belt moves, the second limiting ring 446 can move on the sliding seat 445, so as to complete the limiting work on multiple bundles of long strip-shaped sheath materials, and after the multiple long strip-shaped sheath materials pass through the limiting part 45, the limiting part 45 positions one ends of the multiple long strip-shaped sheath materials in a predetermined cutting area to complete the cutting work.

[0062] The limiting part 45 includes at least three mounting shafts 451 arranged on the inner wall of the discharge port, hinge seats 452 arranged on the mounting shafts 451, limiting cylinders 453 movably connected to the hinge seats 452, driving blocks 454 arranged at the output ends of the limiting cylinders 453, two driving rods 455 symmetrically arranged on the driving blocks 454 and movably connected to the driving blocks 454, a driving seat 456 for connecting the two driving rods 455, and a plurality of connecting rods 457 arranged on the driving seat 456; one end of the connecting rod 457 is arranged on the mounting shaft 451; waist-shaped holes are provided on the mounting shaft 451, and protruding ends adapted to the waist-shaped holes are provided on the driving blocks 454; at least two driving wheels 459 are further provided on the driving seat 456, a limiting belt 4510 for connecting the driving wheels 459, and a rotating motor 458 arranged on the driving seat 456 and connected to one of the driving wheels 459; a plurality of limiting strips are provided on the limiting belt 4510; the distance between the limiting belt 4510 and the strip-shaped sheath material is adjusted by the limiting cylinder 453 to limit the strip-shaped sheath material, and the rotating motor 458 rotates, so that the limiting part 45 can traction the strip-shaped sheath material to enable it to be located in the cutting area, and the cutting mechanism completes the cutting of the strip-shaped sheath material; in order to complete the limiting and driving work of multiple bundles of sheath materials, when multiple bundles of sheath materials pass through the discharge port, at this time the limiting cylinder 453 starts to work, and the moving limiting cylinder 453 can push the driving block 454 to move in the length direction of the mounting shaft 451, so that the moving driving block 454 can adjust the position of the driving seat 456 through the arranged driving rods 455. Since the three limiting cylinders 453 move synchronously, the area between the three driving seats 456 can be reduced, so that the limiting belt 4510 on the driving seat 456 can abut against the surface of the sheath material. Then the rotating motor 458 starts to work, and the moving rotating motor 458 drives the driving wheel 459 to rotate, so that the limiting belt 4510 can be driven to move. Since the limiting belt 4510 abuts against the strip-shaped sheath material, during the process of limiting the sheath material, the sheath material will also be driven to move, so that the sheath material is located in the established cutting area, and the cutting work of the sheath material is completed.

[0063] A second traction part 43 is further provided on the placing table 41, and the second traction part 43 is located between the first traction part 42 and the third traction part 44; the second traction part 43 includes a fixed plate 431 fixedly installed on the placing table 41, telescopic cylinders 432 symmetrically installed on the fixed plate 431, a connecting member 433 connected to the output end of the telescopic cylinder 432, a turning plate 434 connected to the connecting member 433 and movably connected to the fixed plate 431, first guide rods 435 uniformly arranged on the turning plate 434, a connecting block 437 connected to one end of the first guide rod 435, and a second guide rod 436 arranged on the connecting block 437; wherein placing channels are formed in the first guide rod 435, the second guide rod 436 and the connecting block 437, and the placing channel in the connecting block 437 has a certain curvature and a sponge is arranged in the placing channel; after the strip-shaped sheath material passes through the first traction part 42, one end of the strip-shaped sheath material sequentially passes through the first guide rod 435, the connecting block 437 and the second guide rod 436, and then passes through the provided third traction part 44; when the sheath material passes through the second traction part 43, the telescopic cylinder 432 starts to work, and the moving telescopic cylinder 432 can drive the connecting member 433 to start moving, and then the moving connecting member 433 can drive the turning plate 434 to move, so that the turning plate 434 can rotate, and the bending degree of the sheath material in the first guide rod 435, the connecting block 437 and the second guide rod 436 can be adjusted, thereby avoiding excessive deformation of the strip-shaped sheath material between the second traction part 43 and the limiting part 45. Excessive deformation will cause the sheath material to contact the placing table 41, and at the same time, due to the drive of the limiting part 45, the sheath material will be displaced relative to the placing table 41, resulting in damage to the sheath; a rotating shaft is provided between the turning plate 434 and the placing table 41;

[0064] In a further embodiment, since the sheath material with a smaller diameter needs to pass through the combing member after passing through the second traction part 43, the sheath material between the second traction part 43 and the combing member will undergo a certain degree of deformation, that is, the distance between adjacent strip-shaped sheath materials gradually decreases along the direction from the second traction part 43 to the third traction part 44. Therefore, when the combing member limits the sheath material, the turning plate 434 can adjust the position of the first guide rod 435, thereby adjusting the deformation amount of the sheath. On the premise of ensuring that it does not contact the placing table 41, it can also support and limit the sheath, reduce the tension of the sheath material, and avoid damage to the sheath material. The sponge provided can wipe the water droplets remaining on the sheath material and reduce the adhesion of the water droplets.

[0065] The transportation unit 6 includes a conveyor 62 in the form of a circular tube chain, two discharge valves 63 and a blanking box 61 provided on the conveyor 62, and a return pipe 64 for connecting one of the discharge valves 63 to the blanking box 61; the conveyor 62 includes two conveying pipes 621, a driving box 622 for connecting the two conveying pipes 621, a connecting shaft 624 built in the driving box 622, a driving gear 625 sleeved on the connecting shaft 624, a conveying chain plate 626 for connecting the two driving gears 625 and located in the conveying pipe 621, and a driving motor 623 provided on one of the driving boxes 622 and connected to the connecting shaft 624; wherein the return pipe 64 is connected to the discharge valve 63 near the driving motor 623 for transporting the sheath material remaining in the conveying pipe 621 into the blanking box 61; one of the conveying pipes 621 is a feed pipe and the other is a discharge pipe; the blanking box 61 is provided with a feed port; the cutting mechanism can complete the cutting work of the sheath material, and then the cut sheath material can fall into the blanking box 61. Then the driving motor 623 starts to work. The moving driving motor 623 can drive the connecting shaft 624 to rotate. The moving connecting shaft 624 can drive the driving gear 625 to rotate so as to drive the conveying chain plate 626 to move. The gap between adjacent chain plates in the conveying chain plate 626 is the transportation area. Under the action of the driving motor 623, the sheath material can be driven to move in the conveying pipe 621 and then discharged from the discharge valve 63 far from the driving motor 623, completing the quantitative transportation work of the sheath material.

[0066] The transportation unit 6 includes the following two transportation methods. One is that collecting bags can be detachably provided at both discharge valves 63. Initially, the discharge valve 63 far from the driving motor 623 is opened, and at this time, the collecting bag connected to this discharge valve 63 collects particles. When the collecting bag reaches the established collection amount, this discharge valve 63 is closed, and the other discharge valve 63 is started to discharge the sheath material from the other discharge valve 63, so that the collection work of the sheath material can be completed without interrupting the transportation process. The other is that a return pipe 64 is provided between the discharge valve 63 near the driving motor 623 and the blanking box 61. At this time, the discharge valve 63 near the driving motor 623 is in an always-open state, so that the material will not enter the driving box 622, ensuring that the conveying chain plate 626 and the driving gear 625 in the driving box 622 can be engaged to ensure the smooth progress of the transportation work.

[0067] In a further embodiment, the production mechanism further includes a preheating device 1, an extruder 2, and a cooling tank 3. The preheating device 1 is used to melt the sheath material and transport the melted sheath material into the extruder 2. Then, the provided extruder 2 forms a strip-shaped sheath material at the die head and immerses the strip-shaped sheath material in the coolant in the cooling tank 3 for cooling work.

[0068] Working principle description: The preheating device 1 is used to melt the sheath material and transport the melted sheath material into the extruder 2. Then, the provided extruder 2 forms a strip-shaped sheath material at the die head and immerses the strip-shaped sheath material in the coolant in the cooling tank 3 for cooling work. Then, the formed sheath material sequentially passes through the traction unit 4 and the cutting mechanism. The cutting mechanism cuts the sheath material into particles and drops them into the transport unit 6 to complete the transportation work of the sheath material.

[0069] When it is necessary to adjust the position of the connecting frame 427, the rotating motor 421 starts to work at this time. The moving rotating motor 421 can drive the rotating seat 422 to move. At this time, the moving rotating seat 422 can drive the eccentric shaft 423 to move, so as to drive the driven slide rail 424 connected to the eccentric shaft 423 to move. Then, with the cooperation of the sliding seat 426, the position of the connecting frame 427 in the axial and radial directions of the limiting rod is changed, so as to adjust the supporting position of the connecting frame 427. By setting the connecting frame 427 with a U-shaped structure, the strip-shaped sheath material located on the connecting frame 427 is placed obliquely, so that the water droplets attached to it can break away from the sheath material body under the influence of its own weight. And through the provided first driving member, the supporting position of the connecting frame 427 on the sheath material can be adjusted, avoiding excessive deformation of the sheath material due to its too large mass, which may cause a large inclination angle between the end face of one end of the sheath material and the cutting surface of the cutting mechanism during subsequent cutting and forming, resulting in the processed sheath material not meeting the established standards.

[0070] When the sheath material passes through the second traction part 43, the telescopic cylinder 432 starts to work. The moving telescopic cylinder 432 can drive the connecting member 433 to start moving. Then, the moving connecting member 433 can drive the turning plate 434 to move, so that the turning plate 434 can rotate to adjust the bending degree of the sheath material located in the first guide rod 435, the connecting block 437, and the second guide rod 436, thus avoiding excessive deformation of the strip-shaped sheath material between the second traction part 43 and the limiting part 45. Excessive deformation will cause the sheath material to contact the placement table 41.

[0071] When the third traction part 44 needs to start moving, the limit motor 441 starts to work. The moving limit motor 441 can drive the driving wheel 443 to rotate. The moving driving wheel 443 drives the driven wheel 444 to rotate through the set driving belt. Since the driving belt is located between the driven wheel 444 and the second limit ring 446, when the driving belt moves, it can make the second limit ring 446 move on the sliding seat 445, so as to complete the limiting work on multiple bundles of long strip-shaped sheath materials. After multiple long strip-shaped sheath materials pass through the limiting part 45, one end of multiple long strip-shaped sheath materials is located in the established cutting area to complete the cutting work. The working process of the third driving part is the same as that of the first driving part, and will not be repeated here;

[0072] In order to complete the limiting and driving work on multiple bundles of sheath materials, when multiple bundles of sheath materials pass through the discharge port, the limit cylinder 453 starts to work at this time. The moving limit cylinder 453 can push the driving block 454 to move in the length direction of the mounting shaft 451. Thus, the moving driving block 454 can adjust the position of the driving seat 456 through the set driving rod 455. Since the three limit cylinders 453 move synchronously, the area between the three driving seats 456 can be reduced, so that the limit belt 4510 on the driving seat 456 can be in contact with the surface of the sheath material. Then the rotating motor 458 starts to work. The moving rotating motor 458 drives the driving wheel 459 to rotate, so as to drive the limit belt 4510 to move. Since the limit belt 4510 is in contact with the long strip-shaped sheath material, during the process of limiting the sheath material, the sheath material will also be driven to move, so that the sheath material is located in the established cutting area to complete the cutting work of the sheath material;

[0073] The cutting mechanism can complete the cutting work of the sheath material. Then the cut sheath material can fall into the blanking box 61. Then the driving motor 623 starts to work. The moving driving motor 623 can drive the connecting shaft 624 to rotate. The moving connecting shaft 624 can drive the driving gear 625 to rotate, so as to drive the transport chain plate 626 to move. The gap between adjacent chain plates in the transport chain plate 626 is the transport area. Under the action of the driving motor 623, it can drive the sheath material to move in the conveying pipe 621, and then discharge from the discharge valve 63 far away from the driving motor 623 to complete the quantitative transport work of the sheath material.

[0074] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept scope of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A forming device for low-smoke and halogen-free sheathing material, characterized in that Including: A production mechanism that melts and extrudes the sheath material placed therein into a long strip of sheath material; A traction unit (4) connected to the production mechanism for combing and limiting the extruded long strip of sheath material; A mounting seat (5) provided on the traction unit (4), and a cutting mechanism for cutting and shaping the long strip of sheath material is further provided on the mounting seat (5); A transportation unit (6) connected to the traction unit (4) for receiving the cut sheath material particles and transporting and handling them. The sheath material particles are the raw materials used for the sheath in cables or wires; The traction unit (4) includes a placement table (41), a limiting rod, a first traction part (42), and a third traction part (44); The placement table (41) is located on one side of the production mechanism. A plurality of feed ports and a plurality of discharge ports are provided on the placement table (41), and a limiting part (45) for traction and limiting the long strip of sheath material is provided in the discharge port; The limiting rod is fixedly installed on the placement table (41); The first traction part (42) and the third traction part (44) are respectively sleeved on the limiting rod. Both the first traction part (42) and the third traction part (44) can guide the long strip of sheath material, and the third traction part (44) can also limit and comb the long strip of sheath material; The third traction part (44) includes a third driving member and a combing member provided on the third driving member; The number of the combing members is multiple; The combing member includes a fixed seat (442) fixedly installed on the third driving member, a sliding seat (445) provided on the fixed seat (442), and a second limiting ring (446) provided on the sliding seat (445) and slidably connected to the sliding seat (445). A driving wheel (443) and two driven wheels (444) respectively provided on the fixed seat (442), a driving belt for connecting the driving wheel (443) and the driven wheels (444), and a limiting motor (441) connected to the driving wheel (443) and provided on the fixed seat (442); There is a gap between the driven wheel (444) and the outer wall of the second limiting ring (446), and the driving belt is located in this gap. The movement of the driving belt drives the second limiting ring (446) to move on the sliding seat (445); The second limiting ring (446) is provided with a chute, and the sliding seat (445) is provided with an arc-shaped protrusion adapted to the chute; Through holes for the long strip of sheath material to pass through are provided on the sliding seat (445) and the fixed seat (442); The limiting part (45) includes at least three mounting shafts (451) arranged on the inner wall of the discharge port, hinge seats (452) arranged on the mounting shafts (451), limiting cylinders (453) movably connected to the hinge seats (452), driving blocks (454) arranged at the output ends of the limiting cylinders (453), two driving rods (455) symmetrically arranged on the driving blocks (454) and movably connected to the driving blocks (454), a driving seat (456) for connecting the two driving rods (455), and a plurality of connecting rods (457) arranged on the driving seat (456); One end of the connecting rod (457) is arranged on the mounting shaft (451); A waist-shaped hole is provided on the mounting shaft (451), and a convex end adapted to the waist-shaped hole is provided on the driving block (454); It can complete the limiting work of multiple bundles of long strip-shaped sheath materials, and after the multiple long strip-shaped sheath materials pass through the limiting part (45), the limiting part (45) makes one end of the multiple long strip-shaped sheath materials located in a predetermined cutting area to complete the cutting work.

2. The molding device for a low-smoke and halogen-free sheathing compound according to claim 1, characterized in that: The first traction part (42) includes a first driving member, a plurality of connecting frames (427) arranged on the first driving member, and two first limiting rings (428) symmetrically arranged on the connecting frames (427); The structures of the first driving member and the third driving member are the same; Wherein the connecting frame (427) is of a U-shaped structure, and there is a difference in the distances between the two free ends of the U-shaped connecting frame (427) and the first driving member. One end of the connecting frame (427) with a shorter distance is closer to the feed port than the other end of the connecting frame (427).

3. The forming device for a low-smoke and halogen-free sheathing material according to claim 2, characterized in that: The first driving member includes a rotating motor (421) fixedly installed on the placing table (41), a rotating seat (422) connected to the output end of the rotating motor (421), an eccentric shaft (423) arranged at a non-central position of the rotating seat (422), a driven slide rail (424) connected to the eccentric shaft (423), two first slide bars (425) symmetrically arranged on the driven slide rail (424), and a slide seat (426) for connecting the first slide bar (425) and the limiting rod; Wherein the length direction of the first slide bar (425) is perpendicular to the length direction of the limiting rod; By means of the eccentric shaft (423) arranged on the rotating seat (422), the driven slide rail (424) can move synchronously in the axial and radial directions of the limiting rod, so as to adjust the positions of the first limiting ring (428) and the combing member.

4. A molding device for a low-smoke and halogen-free sheath material according to claim 1, characterized in that: At least two driving wheels (459) are further arranged on the driving seat (456), a limiting belt (4510) for connecting the driving wheels (459), and a rotating motor (458) arranged on the driving seat (456) and connected to one of the driving wheels (459); A plurality of limiting strips are arranged on the limiting belt (4510); Adjust the distance between the limiting belt (4510) and the strip-shaped sheath material through the limiting cylinder (453) to limit the strip-shaped sheath material, and through the rotation of the rotating motor (458), the limiting part (45) pulls the strip-shaped sheath material so that it can be located in the cutting area, and the cutting mechanism completes the cutting of the strip-shaped sheath material.

5. A molding device for a low-smoke and halogen-free sheathing material according to claim 1, characterized in that: A second traction part (43) is further provided on the placing table (41), and the second traction part (43) is located between the first traction part (42) and the third traction part (44); The second traction part (43) includes a fixing plate (431) fixedly installed on the placing table (41), telescopic cylinders (432) symmetrically installed on the fixing plate (431), a connecting piece (433) connected to the output end of the telescopic cylinder (432), a turning plate (434) connected to the connecting piece (433) and movably connected to the fixing plate (431), first guide rods (435) uniformly arranged on the turning plate (434), a connecting block (437) connected to one end of the first guide rod (435), and a second guide rod (436) arranged on the connecting block (437); Wherein placing channels are formed in the first guide rod (435), the second guide rod (436) and the connecting block (437), and the placing channel in the connecting block (437) has a curvature and a sponge is arranged in the placing channel.

6. The forming device for a low-smoke and halogen-free sheathing material according to claim 5, characterized in that: The transportation unit (6) includes a conveyor (62), two discharge valves (63) and a blanking box (61) arranged on the conveyor (62), and a return pipe (64) for connecting one of the discharge valves (63) to the blanking box (61).

7. A forming device for a low-smoke and halogen-free sheath material according to claim 6, characterized in that: The conveyor (62) includes two conveying pipes (621), a driving box (622) for connecting the two conveying pipes (621), a connecting shaft (624) built in the driving box (622), a driving gear (625) sleeved on the connecting shaft (624), a transportation chain plate (626) for connecting the two driving gears (625) and located in the conveying pipe (621), and a driving motor (623) arranged on one of the driving boxes (622) and connected to the connecting shaft (624); Wherein the return pipe (64) is connected to the discharge valve (63) near the driving motor (623) for transporting the sheath material remaining in the conveying pipe (621) into the blanking box (61); One of the conveying pipes (621) is a feed pipe and the other conveying pipe (621) is a discharge pipe.

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