MPP cable protection forming equipment and forming method

Abstract

The MPP cable protection forming equipment comprises a machine body, a barrel is installed on the left side of the top end of the machine body, and a spiral extrusion rod is arranged in the barrel. The pipe wall thickness adjusting mechanism is arranged, the fork-shaped telescopic part is in the stretching state or the folding state, the expanding part can conduct diameter expanding or diameter reducing on the elastic pipe, the gap between the outer wall of the elastic pipe and the fixing pipe is changed, the elastic pipe is made of thermoplastic polyurethane elastomer rubber and has certain rigidity, and therefore the elastic pipe is not prone to falling off. The MPP cable protection pipe wall thickness changing device is provided with a traction mechanism, the traction mechanism can be automatically connected with extruded raw materials to achieve traction forming, waste pipe materials formed by the raw materials at first can be cut off, waste pipe materials which are cut off and still attached to the traction pipe can be scraped off, and the situation that the waste pipe materials on the traction pipe are too thick, so that the waste pipe materials on the traction pipe are not too thick is avoided. And the whole process is automatically carried out, so that the phenomenon that the traction pipe cannot be connected with the raw material next time is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of MPP cable protection tube production, and in particular to an MPP cable protection molding device and a molding method. Background Art

[0002] Cable protection tube is also called cable tube, power cable tube, cement cable tube, power drainage tube, power cable protection tube, etc. Cable protection tube is mainly installed in the section where communication cable and power line cross to prevent short circuit accident caused by power line disconnection, causing communication cable and wire rope to be electrified, so as to protect cable, switch, core board, and even the whole machine from being burned, and also play a certain role in isolating the magnetic field interference of power line.

[0003] When producing cable protection tubes, it is usually necessary to perform raw material extrusion, traction and cooling molding steps. In the prior art, workers wear gloves and repeatedly press the starting end of the extruded raw material on the traction tube so that the starting end of the extruded raw material adheres to the traction tube. This method is more troublesome. At the same time, the existing molding equipment is not convenient for adjusting the wall thickness of the cable protection tube, and the applicability range is poor, which is difficult to meet the needs of the workers. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an MPP cable protection molding device and a molding method. The technical solution solves the problem that the cable protection tube proposed in the above background technology usually needs to perform raw material extrusion, traction and cooling molding steps during production. In the prior art, the staff wears gloves and repeatedly presses the starting end of the extruded raw material on the traction tube so that the starting end of the extruded raw material adheres to the traction tube. This method is more troublesome. At the same time, the existing molding equipment is not convenient for adjusting the wall thickness of the cable protection tube, and has a poor applicability range.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: A MPP cable protection molding device comprises a body, a barrel is installed on the left side of the top end of the body, a spiral extrusion rod is arranged inside the barrel, a discharge box is connected to the right side of the barrel, a frustum is fixedly connected to the right side of the inside of the barrel, a discharge trough is formed between the frustum and the barrel, a fixed tube is fixedly installed inside the discharge box, an elastic tube is arranged inside the fixed tube, a tube wall thickness adjustment mechanism is arranged inside the elastic tube, a waste scraping mechanism is arranged on the right side of the discharge box, a cooling box is arranged on the right side of the top end of the body, a sealing mechanism is arranged on the left side of the cooling box, a traction mechanism is arranged on the rear side of the inside of the cooling box, and a pulling mechanism is arranged on the bottom end of the inside of the cooling box.

[0006] Preferably, the tube wall thickness adjustment mechanism includes a driving gear, which is rotatably connected to the right side of the truncated cone body, and the right side of the truncated cone body is also fixedly connected to the first fixed block by several groups of first fixing rods, and a first screw rod is rotatably connected between the first fixing block and the truncated cone body, and the threads opened at two ends of the first screw rod have opposite rotation directions, and both ends of the outer surface of the first screw rod are threadedly connected to a movable seat, and the movable seat is slidably connected to the first fixed rod, and the interiors of the two groups of movable seats are respectively rotatably connected to the two ends of one side of the fork-shaped telescopic member, and the two ends of the other side of the fork-shaped telescopic member are respectively rotatably connected to the interior of the sliding seat, and the two groups of sliding seats are both slidably connected to the slide rail, and a support member is fixedly installed on the outer side of the slide rail, and a driven gear meshing with the driving gear is also installed on the outer surface of the first screw rod, and a first stepper motor is arranged on the inner side wall of one group of the first fixed blocks, and the output end of the first stepper motor is fixedly connected to one group of the first screw rods.

[0007] Preferably, the outer wall of the expansion member abuts against the inner wall of the elastic tube, two groups of sliders are fixedly connected to the left side of the elastic tube, two groups of slide grooves matching the sliders are opened on the right side of the truncated cone body, and the sliders are slidably connected inside the slide grooves.

[0008] Preferably, the waste scraping mechanism includes a second fixed block and a second screw rod, the second fixed block is provided with two groups and both are welded to the right top end of the discharge box, the second screw rod is rotatably connected between the two groups of second fixed blocks, the outer surface of the second screw rod is threadedly connected with the first scraper, a second fixed rod is also welded between the two groups of second fixed blocks, the first scraper is slidably connected to the second fixed rod, the outer end of the second screw rod is fixedly connected to the output end of the second stepper motor, and the second stepper motor is arranged on the outside of one of the groups of the second fixed blocks.

[0009] Preferably, the sealing mechanism includes a first connecting rod and a sealing plate, two groups of third fixed blocks are fixedly installed on the left top of the cooling box, a first threaded rod is rotatably connected between the two groups of the third fixed blocks, two ends of the first connecting rod are respectively fixedly connected to the inner walls of the two groups of third fixed blocks, the threads opened at the two ends of the first threaded rod have opposite rotation directions, the sealing plate is provided with two groups and is respectively threadedly connected to the two ends of the outer surface of the first threaded rod, the sealing plate is slidably connected to the first connecting rod, a first servo motor is installed on the outer side of one group of the third fixed blocks, and the outer end of the first threaded rod is fixedly connected to the output end of the first servo motor.

[0010] Preferably, the traction mechanism includes a fourth fixed block, and the fourth fixed block is provided with two groups, both of which are welded to the inner rear side of the cooling box, the interiors of the two groups of the fourth fixed blocks are rotatably connected with a third screw rod through bearings, the outer surface of the third screw rod is threadedly connected with a movable block, and the movable block is slidably connected to the third fixed rod, and the outer end of the third screw rod is fixedly installed on the output end of the third stepper motor, and the third stepper motor is arranged on the outside of one group of the fourth fixed blocks, and a first electric push rod is installed on the outside of the movable block, and the output end of the first electric push rod is fixedly connected to a connecting plate, and a traction tube is fixedly connected to the left side of the connecting plate, and a second electric push rod is also installed on the left side of the connecting plate, and the output end of the second electric push rod is connected to a connecting ring.

[0011] Preferably, the connecting ring is composed of a left plate, a right plate and a circular frame, and a through hole is opened in the middle of the two side plates. A rotating ring is rotatably connected to the right plate of the connecting ring, and inner and outer circumferential surfaces of the rotating ring are respectively fixedly connected with internal teeth and outer teeth. A group of active gears and several groups of passive gears are also rotatably connected to the right plate of the connecting ring, and the internal teeth are meshed with the several groups of passive gears, and the active gear is meshed with the external teeth. A fixed ring is fixedly installed on the right plate of the connecting ring, and several groups of racks are slidably connected inside the fixed ring, and several groups of racks are respectively meshed with several groups of passive gears. The outer end of the rack is fixedly connected to a first L-shaped piece, and the interior of the first L-shaped piece is rotatably connected to a cold pressing roller. A transmission motor is arranged on the left plate of the connecting ring, and the active gear is fixedly connected to the output end of the transmission motor.

[0012] Preferably, a third electric push rod is installed inside the traction tube, and the output end of the third electric push rod is fixedly connected to a fixing plate, and a rotating member is rotatably connected to the outer side of the fixing plate, and a second gear is fixedly installed on the outer surface of the rotating member, and a driving motor is also provided on the outer side of the fixing plate, and the output end of the driving motor is fixedly connected to the first gear meshing with the second gear, and a cylinder is installed at the outer end of the rotating member, and a mounting seat is connected to the output end of the cylinder, and a cutting knife is rotatably connected to the mounting seat, and a fourth screw rod is rotatably connected to the inside of the traction tube, and a fourth fixed rod is also welded inside the traction tube, and a second L-shaped member is slidably connected to the fourth fixed rod, the second L-shaped member extends to the outside of the traction tube and is connected to the second scraper, the second L-shaped member is threadedly connected to the fourth screw rod, one end of the fourth screw rod is fixedly connected to the output end of the fourth stepper motor, and the fourth stepper motor is arranged inside the traction tube.

[0013] Preferably, the pulling-out mechanism comprises a fifth fixed block and a movable plate, the fifth fixed block is provided with two groups, both of which are welded to the inner bottom end of the cooling box, a fifth screw rod is rotatably connected between the two groups of the fifth fixed blocks, the fifth fixed blocks are fixedly connected by a fifth fixed rod, the movable plate is threadedly connected to the fifth screw rod, and the movable plate is slidably connected to the fifth fixed rod, the outer end of the fifth screw rod is fixedly installed on the output end of the fifth stepper motor, the fifth stepper motor is arranged on the outside of one group of the fifth fixed blocks, a fourth electric push rod is provided on the top of the movable plate, the output end of the fourth electric push rod is connected to a connecting frame, a second threaded rod is rotatably connected inside the connecting frame, the threads opened at two ends of the second threaded rod have opposite rotation directions, and the two ends of the outer surface of the second threaded rod are respectively threadedly connected with clamps, the clamp is slidably connected to the second connecting rod, the second connecting rod is fixedly installed inside the connecting frame, a second servo motor is provided on the outside of the connecting frame, and the outer end of the second threaded rod is fixedly installed on the output end of the second servo motor.

[0014] Compared with the prior art, the present invention provides an MPP cable protection molding device and molding method, which has the following beneficial effects: 1. The present invention is provided with a tube wall thickness adjustment mechanism. When the fork-shaped telescopic member is in an extended state or a retracted state, the expansion member can "expand" or "contract" the elastic tube, thereby changing the gap between the outer wall of the elastic tube and the fixed tube. The elastic tube is made of thermoplastic polyurethane elastomer rubber and also has a certain rigidity, thereby realizing the change of the tube wall thickness of the MPP cable protection tube. When producing an MPP cable protection tube with a fixed tube wall thickness, the "expansion" and "contraction" of the elastic tube can also be repeated at intervals in this way, with the purpose of squeezing the raw material in the gap between the outer wall of the elastic tube and the fixed tube to facilitate the discharge of air inside the raw material.

[0015] 2. The present invention is secondly provided with a traction mechanism, which can automatically connect with the extruded raw material to realize traction molding, and can also cut off the "waste pipe material" initially formed by the raw material, and scrape off the "waste pipe material" that is cut off and still adheres to the traction pipe, thereby avoiding the phenomenon that the "waste pipe material" on the traction pipe is too thick, resulting in the traction pipe being unable to be connected with the raw material next time. The whole process is automated to meet the needs of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the external structure of the cylinder and the discharge box in the present invention; Figure 3 It is a schematic diagram of the internal structure of the cylinder and the discharge box in the present invention; Figure 4 It is a structural schematic diagram of the slideway and the slider in the present invention; Figure 5 It is a structural schematic diagram of the tube wall thickness adjustment mechanism in the present invention; Figure 6 It is a structural schematic diagram of the tube wall thickness adjustment mechanism in the present invention from another viewing angle; Figure 7 It is a structural schematic diagram of the movable seat and the sliding seat in the present invention; Figure 8 It is a structural schematic diagram of the waste scraping mechanism in the present invention; Fig. 9 It is a structural schematic diagram of the sealing mechanism in the present invention; Fig.10 It is a schematic diagram of the internal structure of the cooling box in the present invention; Fig.11 It is a structural schematic diagram of the traction mechanism in the present invention; Fig.12 This is a schematic diagram of the installation position of the transmission motor in the present invention; Fig.13 It is a schematic diagram of the internal structure of the connecting ring in the present invention; Fig.14 It is a schematic diagram of the internal structure of the traction tube in the present invention; Fig.15 It is a schematic diagram of the structure of the cutting knife in the present invention; Fig.16 It is a structural schematic diagram of the pulling mechanism in the present invention.

[0017] The numbers in the figure are: 1. Machine body; 101. Cylinder; 102. Discharging box; 103. Cooling box; 104. Cone body; 105. Discharging chute; 106. Fixed pipe; 107. Elastic pipe; 108. Slide; 109. Sliding block; 2. Tube wall thickness adjustment mechanism; 201. Driving gear; 202. First fixed rod; 203. First fixed block; 204. First screw rod; 205. Driven gear; 206. Movable seat; 207. Slide rail; 208. Sliding seat; 209. Fork-shaped telescopic member; 210. Spreading member; 211. First stepper motor; 3. Waste scraping mechanism; 301. Second fixed block; 302. Second fixed rod; 303. Second screw rod; 304. Second stepping motor; 305. First scraper; 4. Sealing mechanism; 401. third fixing block; 402. first connecting rod; 403. first threaded rod; 404. first servo motor; 405. sealing plate; 5. Traction mechanism; 501. Fourth fixed block; 502. Third fixed rod; 503. Third screw rod; 504. Third stepping motor; 505. Movable block; 506. First electric push rod; 507. Connecting plate; 508. Second electric push rod; 509. Connecting ring; 510. Rotating ring; 511. Internal teeth; 512. External teeth; 513. Driving gear; 514. Passive gear; 515. Rack; 516. Fixed ring; 517, transmission motor; 518, first L-shaped member; 519, cold pressing roller; 520, fourth fixed rod; 521, fourth screw rod; 522, fourth stepping motor; 523, second L-shaped member; 524, second scraper; 525, third electric push rod; 526, fixed plate; 527, rotating member; 528, driving motor; 529, first gear; 530, second gear; 531, cylinder; 532, cutting knife; 6. Pull-out mechanism; 601. fifth fixed block; 602. fifth fixed rod; 603. fifth screw rod; 604. fifth stepping motor; 605. moving plate; 606. fourth electric push rod; 607. connecting frame; 608. second threaded rod; 609. second connecting rod; 610. second servo motor; 611. clamping member. DETAILED DESCRIPTION

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0019] Example 1 Please refer to Figure 1-Figure 16 As shown, an MPP cable protection molding device includes a body 1, a barrel 101 is installed on the left side of the top of the body 1, a spiral extrusion rod is arranged inside the barrel 101, a discharge box 102 is connected to the right side of the barrel 101, a frustum body 104 is fixedly connected to the right side of the inside of the barrel 101, a discharge trough 105 is formed between the frustum body 104 and the barrel 101, a fixed tube 106 is fixedly installed inside the discharge box 102, an elastic tube 107 is arranged inside the fixed tube 106, a tube wall thickness adjustment mechanism 2 is installed inside the elastic tube 107, a waste scraping mechanism 3 is arranged on the right side of the discharge box 102, a cooling box 103 is arranged on the right side of the top of the body 1, a sealing mechanism 4 is installed on the left side of the cooling box 103, a traction mechanism 5 is arranged on the rear side of the inside of the cooling box 103, and a pulling mechanism 6 is arranged at the bottom end of the inside of the cooling box 103.

[0020] Example 2 Please refer to Figure 4-Figure 7As shown, the tube wall thickness adjustment mechanism 2 includes a driving gear 201, which is rotatably connected to the right side of the truncated cone body 104. The right side of the truncated cone body 104 is also fixedly connected to the first fixed block 203 through a plurality of groups of first fixed rods 202. A first screw rod 204 is rotatably connected between the first fixed block 203 and the truncated cone body 104. The threads at both ends of the first screw rod 204 are in opposite directions. Both ends of the outer surface of the first screw rod 204 are threadedly connected to a movable seat 206. The movable seat 206 is slidably connected to the first fixed rod 202. The inner surfaces of the two groups of movable seats 206 are connected to the first fixed rod 202. The two ends are rotatably connected to the two ends of one side of the fork-shaped telescopic member 209, and the two ends of the other side of the fork-shaped telescopic member 209 are rotatably connected to the inside of the sliding seat 208. The two sets of sliding seats 208 are slidably connected to the slide rail 207. The outer side of the slide rail 207 is fixedly installed with a support member 210. The outer surface of the first screw rod 204 is also installed with a driven gear 205 meshing with the driving gear 201, and a first stepper motor 211 is arranged on the inner side wall of one set of the first fixed blocks 203, and the output end of the first stepper motor 211 is fixedly connected to one set of the first screw rods 204.

[0021] Please refer to Figure 4 As shown, the outer wall of the support member 210 abuts against the inner wall of the elastic tube 107, two groups of sliders 109 are fixedly connected to the left side of the elastic tube 107, and two groups of slide grooves 108 adapted to the sliders 109 are opened on the right side of the truncated cone body 104, and the sliders 109 are slidably connected inside the slide grooves 108.

[0022] It can be understood by those skilled in the art that, the output end of the first stepper motor 211 drives one group of the first screw rods 204 and the driven gear 205 to rotate as a whole, and the driven gear 205 drives the driving gear 201 to rotate, and then all the driven gears 205 and the first screw rods 204 rotate synchronously as a whole, so that the two groups of movable seats 206 connected to the same group of first screw rods 204 approach or move away from each other, and then the two groups of sliding seats 208 connected to the same group of slide rails 207 approach or move away from each other, and when approaching, the fork-shaped telescopic member 209 is driven to be in an extended state, so that the opening member 210 moves toward a position away from the center of the driving gear 201. When moving away, the fork-shaped telescopic member 209 is in a retracted state, so that the opening member 210 moves toward a position close to the center of the driving gear 201, and then the opening member 210 can "expand" or "contract" the elastic tube 107, thereby changing the gap between the outer wall of the elastic tube 107 and the fixed tube 106. When the MPP cable protection tube is actually produced, the wall thickness of the MPP cable protection tube is changed. The elastic tube 107 is made of thermoplastic polyurethane elastomer rubber and also has a certain rigidity. The slider 109 and the slide groove 108 are used in combination to improve the stability of the elastic tube 107 when "expanding" or "contracting". It is worth mentioning here that when producing MPP cable protection tubes with fixed tube wall thickness, the "expansion" and "reduction" of the elastic tube 107 can also be repeated intermittently in this way. The purpose is to squeeze the raw material in the gap between the outer wall of the elastic tube 107 and the fixed tube 106 to facilitate the discharge of air inside the raw material.

[0023] Example 3 Please refer to Figure 2 and Figure 8 As shown, the scraping mechanism 3 includes a second fixed block 301 and a second screw rod 303. The second fixed block 301 is provided with two groups, both of which are welded to the right top end of the discharge box 102. The second screw rod 303 is rotatably connected between the two groups of second fixed blocks 301. The outer surface of the second screw rod 303 is threadedly connected with a first scraper 305. A second fixed rod 302 is also welded between the two groups of second fixed blocks 301. The first scraper 305 is slidably connected to the second fixed rod 302. The outer end of the second screw rod 303 is fixedly connected to the output end of the second stepper motor 304. The second stepper motor 304 is arranged on the outside of one of the groups of second fixed blocks 301.

[0024] It can be understood by those skilled in the art that, in actual production, we know that, for a period of time before the extrusion operation is started, the raw material extruded by the spiral extrusion rod inside the barrel 101 is "waste", and the viscosity and strength of the "waste" are insufficient, and it is impossible to effectively connect with the traction tube and is easy to break, so it needs to be cut off. The traditional method is to operate manually, but this method is more troublesome. Therefore, the present invention drives the second screw 303 to rotate through the output end of the second stepper motor 304, so that the first scraper 305 reciprocates along the second fixed rod 302 to cut off the "waste", which is convenient and quick.

[0025] Example 4 Please refer to Figure 1 and Fig. 9 As shown, the sealing mechanism 4 includes a first connecting rod 402 and a sealing plate 405, two groups of third fixed blocks 401 are fixedly installed on the left top of the cooling box 103, and a first threaded rod 403 is rotatably connected between the two groups of third fixed blocks 401, and the two ends of the first connecting rod 402 are respectively fixedly connected to the inner walls of the two groups of third fixed blocks 401, and the threads opened at both ends of the first threaded rod 403 have opposite rotation directions. Two groups of sealing plates 405 are provided and are respectively threadedly connected to the two ends of the outer surface of the first threaded rod 403, and the sealing plate 405 is slidably connected to the first connecting rod 402, and a first servo motor 404 is installed on the outer side of one group of the third fixed blocks 401, and the outer end of the first threaded rod 403 is fixedly connected to the output end of the first servo motor 404.

[0026] Those skilled in the art can understand that, by driving the first threaded rod 403 to rotate through the output end of the first servo motor 404, the two sets of sealing plates 405 move closer to or farther away from each other along the first connecting rod 402, and the interior of the cooling box 103 is filled with cold air. In this way, the loss of cold air is effectively avoided.

[0027] Example 5 Please refer to Fig.11 As shown, the traction mechanism 5 includes a fourth fixed block 501, and the fourth fixed block 501 is provided with two groups, both of which are welded to the inner rear side of the cooling box 103. The interiors of the two groups of fourth fixed blocks 501 are rotatably connected with the third screw rod 503 through bearings. The outer surface of the third screw rod 503 is threadedly connected with a movable block 505, and the movable block 505 is slidably connected to the third fixed rod 502. The outer end of the third screw rod 503 is fixedly installed on the output end of the third stepper motor 504. The third stepper motor 504 is arranged on the outside of one of the groups of fourth fixed blocks 501. The outside of the movable block 505 is installed with a first electric push rod 506, and the output end of the first electric push rod 506 is fixedly connected with a connecting plate 507, and the left side of the connecting plate 507 is fixedly connected with a traction tube. The left side of the connecting plate 507 is also installed with a second electric push rod 508, and the output end of the second electric push rod 508 is connected with a connecting ring 509.

[0028] Please refer to Fig.12 and Fig.13 As shown, the connecting ring 509 is composed of a left plate, a right plate and a circular frame, and a through hole is opened in the middle of the two side plates. The right plate of the connecting ring 509 is rotatably connected with a rotating ring 510, and the inner and outer circumferential surfaces of the rotating ring 510 are respectively fixedly connected with internal teeth 511 and external teeth 512. The right plate of the connecting ring 509 is also rotatably connected with a group of active gears 513 and a plurality of groups of passive gears 514. The internal teeth 511 are meshed with the plurality of groups of passive gears 514, and the active gears 513 are meshed with the external teeth 512. The connecting ring 509 is combined, and a fixing ring 516 is fixedly installed on the right side plate of the connecting ring 509, and a plurality of groups of racks 515 are slidably connected inside the fixing ring 516, and the plurality of groups of racks 515 are respectively meshed with a plurality of groups of passive gears 514, and the outer end of the rack 515 is fixedly connected to a first L-shaped member 518, and the interior of the first L-shaped member 518 is rotatably connected to a cold pressing roller 519, and a transmission motor 517 is arranged on the left side plate of the connecting ring 509, and the driving gear 513 is fixedly connected to the output end of the transmission motor 517.

[0029] Please refer to Fig.14 and Fig.15As shown, a third electric push rod 525 is installed inside the traction tube, and the output end of the third electric push rod 525 is fixedly connected to a fixed plate 526, and a rotating member 527 is rotatably connected to the outer side of the fixed plate 526. A second gear 530 is fixedly installed on the outer surface of the rotating member 527, and a driving motor 528 is also arranged on the outer side of the fixed plate 526. The output end of the driving motor 528 is fixedly connected to a first gear 529 meshing with the second gear 530, and a cylinder 531 is installed on the outer end of the rotating member 527, and the output end of the cylinder 531 is connected to the installation A cutting knife 532 is rotatably connected inside the mounting seat, and a fourth screw rod 521 is rotatably connected inside the traction tube. A fourth fixed rod 520 is also welded inside the traction tube. A second L-shaped piece 523 is slidably connected to the fourth fixed rod 520. The second L-shaped piece 523 extends to the outside of the traction tube and is connected to the second scraper 524. The second L-shaped piece 523 is threadedly connected to the fourth screw rod 521. One end of the fourth screw rod 521 is fixedly connected to the output end of the fourth stepper motor 522. The fourth stepper motor 522 is arranged inside the traction tube.

[0030] Those skilled in the art can understand that the output end of the third stepper motor 504 drives the third screw rod 503 to rotate, so that the movable block 505 moves left and right along the third fixed rod 502, thereby driving the traction tube to extend to the outside of the cooling box 103 or retract to the inside of the cooling box 103; the output end of the first electric push rod 506 drives the connecting plate 507 to move forward and backward, thereby driving the traction tube to move forward and backward; The output end of the transmission motor 517 drives the driving gear 513 to rotate, so that the outer teeth 512, the rotating circle 510 and the inner teeth 511 rotate as a whole, and then all the driven gears 514 rotate synchronously, driving all the racks 515 to move toward or away from the center of the connecting circle 509, thereby driving all the cold pressing rollers 519 to move toward or away from the center of the connecting circle 509, and the cold pressing rollers 519 can be cold processed; The output end of the third electric push rod 525 drives the fixing plate 526 to move left and right, so that the cutting knife 532 extends to the outside of the traction tube or retracts to the inside of the traction tube, and the output end of the driving motor 528 drives the first gear 529 to rotate, so that the second gear 530 and the rotating member 527 rotate synchronously as a whole, driving the cylinder 531 and the cutting knife 532 to rotate as a whole; The output end of the fourth stepper motor 522 drives the fourth screw rod 521 to rotate, so that the second L-shaped member 523 reciprocates along the fourth fixing rod 520, and drives the second scraper 524 to reciprocate along the outer wall of the traction tube.

[0031] Example 6 Please refer to Fig.16As shown, the pulling mechanism 6 includes a fifth fixed block 601 and a movable plate 605. The fifth fixed block 601 is provided with two groups, both of which are welded to the inner bottom end of the cooling box 103. A fifth screw rod 603 is rotatably connected between the two groups of fifth fixed blocks 601. The fifth fixed blocks 601 are fixedly connected by a fifth fixed rod 602. The movable plate 605 is threadedly connected to the fifth screw rod 603, and the movable plate 605 is slidably connected to the fifth fixed rod 602. The outer end of the fifth screw rod 603 is fixedly installed on the output end of the fifth stepping motor 604. The fifth stepping motor 604 is arranged on the outer side of one of the fifth fixed blocks 601. The movable plate 605 A fourth electric push rod 606 is arranged on the top of 05, and a connecting frame 607 is connected to the output end of the fourth electric push rod 606. A second threaded rod 608 is rotatably connected inside the connecting frame 607. The threads at both ends of the second threaded rod 608 rotate in opposite directions, and the two ends of the outer surface of the second threaded rod 608 are respectively threadedly connected with clamping members 611, and the clamping members 611 are slidably connected to the second connecting rod 609. The second connecting rod 609 is fixedly installed inside the connecting frame 607, and a second servo motor 610 is arranged outside the connecting frame 607. The outer end of the second threaded rod 608 is fixedly installed on the output end of the second servo motor 610.

[0032] Those skilled in the art can understand that, by driving the fifth screw rod 603 to rotate through the output end of the fifth stepper motor 604, the movable plate 605 moves left and right along the fifth fixed rod 602, driving the two groups of clamping members 611 to reciprocate left and right; by driving the second threaded rod 608 to rotate through the output end of the second servo motor 610, the two groups of clamping members 611 move closer to or away from each other along the outer surface of the second connecting rod 609.

[0033] The working principle and use process of this device: In order to clearly describe the working principle of the present invention, we use Figure 1 The perspective is explained as follows: S1. The output end of the first stepper motor 211 drives one group of the first screw rods 204 and the driven gear 205 to rotate as a whole, and the driven gear 205 drives the driving gear 201 to rotate, and then all the driven gears 205 and the first screw rods 204 rotate synchronously as a whole, so that the two groups of movable seats 206 connected to the same group of first screw rods 204 approach or move away from each other. When approaching, the fork-shaped telescopic member 209 is driven to be in an extended state, so that the opening member 210 moves to a position away from the center of the driving gear 201. When moving away, the fork-shaped telescopic member 209 is in a retracted state, so that the expansion member 210 moves toward a position close to the center of the driving gear 201, and then the expansion member 210 can "expand" or "contract" the elastic tube 107. The elastic tube 107 is made of thermoplastic polyurethane elastomer rubber and also has a certain rigidity, thereby changing the gap between the outer wall of the elastic tube 107 and the fixed tube 106, realizing the change of the wall thickness of the MPP cable protection tube, and the position of the elastic tube 107 is adjusted according to the MPP cable protection tube; S2, the extrusion operation is turned on. In the previous period of time, the raw material extruded by the spiral extrusion rod inside the barrel 101 is "waste material". The viscosity and strength of the "waste material" are insufficient, and it cannot be effectively connected with the traction tube and is easy to break. Within a certain time threshold, the output end of the second stepping motor 304 drives the second screw rod 303 to rotate, so that the first scraper 305 reciprocates along the second fixed rod 302 to cut off the "waste material"; S3. After the "waste" is discharged, the output end of the first electric push rod 506 drives the traction tube to move forward, and drives the third screw rod 503 to rotate through the output end of the third stepping motor 504, so that the traction tube extends to the outside of the cooling box 103, and the spiral extrusion rod continues to extrude the raw material into the discharge trough 105 and flows into the gap between the outer wall of the elastic tube 107 and the fixed tube 106. The raw material is squeezed out from the gap and sleeved on the traction tube. The output end of the second electric push rod 508 drives the connecting ring 509 to move left, and then the output end of the transmission motor 517 drives the connecting ring 509 to move left. The end drives the driving gear 513 to rotate, so that the outer teeth 512, the rotating circle 510 and the inner teeth 511 rotate as a whole, and then all the driven gears 514 rotate synchronously, driving all the cold pressing rollers 519 to move toward the position close to the center of the connecting ring 509. The cold pressing rollers 519 are cold-processed, so that the discharge end of the extruded raw material is formed and pressed on the outer wall of the traction tube. Then, under the action of the output end of the third stepper motor 504, the traction tube moves to the right side and enters the interior of the cooling box 103, thereby pulling the raw material into the cooling box 103 for forming; S4, the raw material is formed into an MPP cable protection tube. Since the tube formed from the raw material at the beginning is also "waste tube material", the output end of the third electric push rod 525 drives the fixing plate 526 to move to the left, so that the cutting knife 532 extends to the outside of the traction tube, and the output end of the driving motor 528 drives the first gear 529 to rotate, so that the second gear 530 and the rotating member 527 rotate synchronously as a whole, driving the cylinder 531 and the cutting knife 532 to rotate as a whole, and the "waste tube material" is cut off. After cutting, the first The output end of an electric push rod 506 drives the traction tube to move backward, and the "waste tube material" cut off is still adhered to the traction tube. The output end of the fourth stepper motor 522 drives the fourth screw rod 521 to rotate, so that the second L-shaped member 523 reciprocates along the fourth fixed rod 520, and drives the second scraper 524 to reciprocate along the outer wall of the traction tube to scrape the "waste tube material" off the traction tube, thereby avoiding the "waste tube material" on the traction tube being too thick, resulting in the traction tube being unable to be connected with the raw material next time; S5. While cutting the "waste pipe material", the two groups of clamps 611 are clamped with the partially formed MPP cable protection tube, and then the fifth screw rod 603 is driven to rotate by the output end of the fifth stepper motor 604, so that the movable plate 605 moves to the right along the fifth fixed rod 602, driving the two groups of clamps 611 to move to the right, and the formed MPP cable protection tube is pulled out to the outside of the cooling box 103. The whole process is automated, meeting the needs of the staff.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An MPP cable protection molding device, comprising a body (1), characterized in that: A barrel (101) is installed on the left side of the top end of the machine body (1), a spiral extrusion rod is arranged inside the barrel (101), the right side of the barrel (101) is connected to a discharge box (102), a truncated cone (104) is fixedly connected to the right side of the barrel (101), a discharge trough (105) is formed between the truncated cone (104) and the barrel (101), a fixed tube (106) is fixedly installed inside the discharge box (102), and an elastic tube (107) is arranged inside the fixed tube (106). The elastic tube (107) is made of thermoplastic polyurethane elastomer rubber, a tube wall thickness adjustment mechanism (2) is installed inside the elastic tube (107), a waste scraping mechanism (3) is arranged on the right side of the discharge box (102), a cooling box (103) is arranged on the right side of the top of the machine body (1), a sealing mechanism (4) is installed on the left side of the cooling box (103), a traction mechanism (5) is arranged on the rear side of the interior of the cooling box (103), and a pulling mechanism (6) is arranged at the bottom end of the interior of the cooling box (103).

2. The MPP cable protection molding equipment according to claim 1 is characterized in that: The tube wall thickness adjustment mechanism (2) comprises a driving gear (201), the driving gear (201) being rotatably connected to the right side of the truncated cone (104), the right side of the truncated cone (104) being fixedly connected to the first fixed block (203) via a plurality of groups of first fixed rods (202), a first screw rod (204) being rotatably connected between the first fixed block (203) and the truncated cone (104), the threads at both ends of the first screw rod (204) being screwed in opposite directions, and both ends of the outer surface of the first screw rod (204) being threadedly connected to a movable seat (206), the movable seat (206) being slidably connected to the first fixed rod (202), and the two groups of movable seats (206) being rotatably connected to the first fixed rod (202). The interior is rotatably connected to the two ends of one side of the fork-shaped telescopic member (209), and the two ends of the other side of the fork-shaped telescopic member (209) are rotatably connected to the interior of the sliding seat (208), and the two groups of sliding seats (208) are slidably connected to the slide rail (207). The outer side of the slide rail (207) is fixedly installed with a spreader (210), and the outer surface of the first screw rod (204) is also installed with a driven gear (205) meshing with the driving gear (201), and a first stepper motor (211) is provided on the inner side wall of one group of the first fixed blocks (203), and the output end of the first stepper motor (211) is fixedly connected to one group of the first screw rods (204).

3. The MPP cable protection molding equipment according to claim 2 is characterized in that: The outer wall of the expansion member (210) abuts against the inner wall of the elastic tube (107); two groups of sliding blocks (109) are fixedly connected to the left side of the elastic tube (107); two groups of sliding grooves (108) adapted to the sliding blocks (109) are provided on the right side of the truncated cone body (104); and the sliding blocks (109) are slidably connected inside the sliding grooves (108).

4. The MPP cable protection molding equipment according to claim 1, characterized in that: The scraping mechanism (3) comprises a second fixed block (301) and a second screw rod (303). The second fixed block (301) is provided with two groups, both of which are welded to the right top end of the discharge box (102). The second screw rod (303) is rotatably connected between the two groups of second fixed blocks (301). The outer surface of the second screw rod (303) is threadedly connected with a first scraper (305). A second fixed rod (302) is further welded between the two groups of the second fixed blocks (301). The first scraper (305) is slidably connected to the second fixed rod (302). The outer end of the second screw rod (303) is fixedly connected to the output end of a second stepping motor (304). The second stepping motor (304) is arranged on the outer side of one group of the second fixed blocks (301).

5. The MPP cable protection molding equipment according to claim 1, characterized in that: The sealing mechanism (4) comprises a first connecting rod (402) and a sealing plate (405); two groups of third fixing blocks (401) are fixedly installed on the left top of the cooling box (103); a first threaded rod (403) is rotatably connected between the two groups of the third fixing blocks (401); two ends of the first connecting rod (402) are respectively fixedly connected to the inner walls of the two groups of the third fixing blocks (401); the threads provided at the two ends of the first threaded rod (403) have opposite rotation directions; two groups of sealing plates (405) are provided and are respectively threadedly connected to the two ends of the outer surface of the first threaded rod (403); the sealing plate (405) is slidably connected to the first connecting rod (402); a first servo motor (404) is installed on the outer side of one group of the third fixing blocks (401); and the outer end of the first threaded rod (403) is fixedly connected to the output end of the first servo motor (404).

6. The MPP cable protection molding equipment according to claim 1, characterized in that: The traction mechanism (5) comprises a fourth fixed block (501), wherein the fourth fixed block (501) is provided with two groups, both of which are welded to the inner rear side of the cooling box (103), the inner parts of the two groups of the fourth fixed blocks (501) are rotatably connected to the third screw rod (503) via bearings, the outer surface of the third screw rod (503) is threadedly connected to a movable block (505), the movable block (505) is slidably connected to the third fixed rod (502), and the outer end of the third screw rod (503) is fixedly mounted on the third stepping motor (504). ), the third stepping motor (504) is arranged on the outside of one of the fourth fixed blocks (501), a first electric push rod (506) is installed on the outside of the movable block (505), the output end of the first electric push rod (506) is fixedly connected to a connecting plate (507), the left side of the connecting plate (507) is fixedly connected to a traction tube, a second electric push rod (508) is also installed on the left side of the connecting plate (507), and the output end of the second electric push rod (508) is connected to a connecting ring (509).

7. The MPP cable protection molding equipment according to claim 6, characterized in that: The connecting ring (509) is composed of a left plate, a right plate and a circular frame. Through holes are opened in the middle of the two side plates. A rotating ring (510) is rotatably connected to the right plate of the connecting ring (509). Internal teeth (511) and external teeth (512) are fixedly connected to the inner and outer circumferential surfaces of the rotating ring (510). A group of driving gears (513) and a plurality of groups of driven gears (514) are also rotatably connected to the right plate of the connecting ring (509). The internal teeth (511) are meshed with the plurality of groups of driven gears (514). The driving gears (513) are meshed with the external teeth (512). A fixing ring (516) is fixedly mounted on the right side plate of the connecting ring (509); a plurality of groups of racks (515) are slidably connected inside the fixing ring (516); the plurality of groups of racks (515) are respectively meshed with a plurality of groups of driven gears (514); a first L-shaped member (518) is fixedly connected to the outer end of the rack (515); a cold pressing roller (519) is rotatably connected inside the first L-shaped member (518); a transmission motor (517) is arranged on the left side plate of the connecting ring (509); and the driving gear (513) is fixedly connected to the output end of the transmission motor (517).

8. The MPP cable protection molding equipment according to claim 6, characterized in that: A third electric push rod (525) is installed inside the traction tube, and the output end of the third electric push rod (525) is fixedly connected to a fixed plate (526), ​​and the outer side of the fixed plate (526) is rotatably connected to a rotating member (527), and the outer surface of the rotating member (527) is fixedly installed with a second gear (530), and a driving motor (528) is also arranged on the outer side of the fixed plate (526), ​​and the output end of the driving motor (528) is fixedly connected to a first gear (529) meshing with the second gear (530), and the outer end of the rotating member (527) is installed with a cylinder (531), and the output end of the cylinder (531) is connected to A mounting seat, wherein a cutting knife (532) is rotatably connected inside the mounting seat, and a fourth screw rod (521) is rotatably connected inside the traction tube, and a fourth fixing rod (520) is also welded inside the traction tube, and a second L-shaped member (523) is slidably connected to the fourth fixing rod (520), and the second L-shaped member (523) extends to the outside of the traction tube and is connected to the second scraper (524), and the second L-shaped member (523) is threadedly connected to the fourth screw rod (521), and one end of the fourth screw rod (521) is fixedly connected to the output end of a fourth stepping motor (522), and the fourth stepping motor (522) is arranged inside the traction tube.

9. The MPP cable protection molding equipment according to claim 1, characterized in that: The pulling mechanism (6) comprises a fifth fixed block (601) and a movable plate (605), wherein the fifth fixed block (601) is provided with two groups, both of which are welded to the inner bottom end of the cooling box (103), a fifth screw rod (603) is rotatably connected between the two groups of the fifth fixed blocks (601), the fifth fixed blocks (601) are fixedly connected via a fifth fixed rod (602), the movable plate (605) is threadedly connected to the fifth screw rod (603), and the movable plate (605) is slidably connected to the fifth fixed rod (602), the outer end of the fifth screw rod (603) is fixedly mounted on the output end of a fifth stepping motor (604), the fifth stepping motor (604) is arranged on the outer side of one group of the fifth fixed blocks (601), and the movable plate (605) is provided with a plurality of screw rods (603) and a plurality of stepping motors (604) arranged on the outer side of the fifth fixed block (601). A fourth electric push rod (606) is arranged at the top of the connecting frame (605), the output end of the fourth electric push rod (606) is connected to a connecting frame (607), a second threaded rod (608) is rotatably connected inside the connecting frame (607), the threads at both ends of the second threaded rod (608) are in opposite directions, and the two ends of the outer surface of the second threaded rod (608) are respectively threadedly connected with clamping members (611), the clamping members (611) are slidably connected to the second connecting rod (609), the second connecting rod (609) is fixedly installed inside the connecting frame (607), a second servo motor (610) is arranged outside the connecting frame (607), and the outer end of the second threaded rod (608) is fixedly installed on the output end of the second servo motor (610).

10. An MPP cable protection molding method, used to implement an MPP cable protection molding device as described in any one of claims 1 to 9, characterized in that: include: S1. The output end of the first stepper motor (211) drives one group of the first screw rods (204) and the driven gear (205) to rotate as a whole, and the driven gear (205) drives the driving gear (201) to rotate, and then all the driven gears (205) and the first screw rods (204) rotate as a whole synchronously, so that the two groups of movable seats (206) connected to the same group of first screw rods (204) approach or move away from each other. When approaching, the fork-shaped telescopic member (209) is driven to be in an extended state, so that the opening member (210) moves toward a position away from the center of the driving gear (201). When moving away, the fork-shaped telescopic member (209) is brought into a retracted state, so that the expansion member (210) moves toward a position close to the center of the driving gear (201), and the expansion member (210) can "expand" or "contract" the elastic tube (107). The elastic tube (107) is made of thermoplastic polyurethane elastomer rubber and also has a certain rigidity, thereby changing the gap between the outer wall of the elastic tube (107) and the fixed tube (106), thereby achieving a change in the wall thickness of the MPP cable protection tube. The position of the elastic tube (107) is adjusted according to the MPP cable protection tube; S2, the extrusion operation is started. In the previous period of time, the raw material extruded by the spiral extrusion rod inside the barrel (101) is "waste material". The viscosity and strength of the "waste material" are insufficient, and it cannot be effectively connected to the traction tube and is easy to break. Within a certain time threshold, the output end of the second stepping motor (304) drives the second screw rod (303) to rotate, so that the first scraper (305) reciprocates along the second fixed rod (302) to cut off the "waste material"; S3. After the "waste" is discharged, the output end of the first electric push rod (506) drives the traction tube to move forward, and drives the third screw rod (503) to rotate through the output end of the third stepping motor (504), so that the traction tube extends to the outside of the cooling box (103), and the spiral extrusion rod continues to extrude the raw material into the discharge trough (105) and flows into the gap between the outer wall of the elastic tube (107) and the fixed tube (106). The raw material is squeezed out of the gap and is sleeved on the traction tube. The output end of the second electric push rod (508) drives the connecting ring (509) to move leftward, and then the output end of the transmission motor (517) drives the connecting ring (509) to move leftward. The driving gear (513) is driven to rotate, so that the outer teeth (512), the rotating circle (510) and the inner teeth (511) rotate as a whole, and then all the driven gears (514) rotate synchronously, driving all the cold pressing rollers (519) to move toward the position close to the center of the connecting circle (509), and the cold pressing rollers (519) are cold-processed, so that the discharge end of the extruded raw material is formed and pressed on the outer wall of the traction tube, and then under the action of the output end of the third stepping motor (504), the traction tube moves to the right side and enters the interior of the cooling box (103), thereby pulling the raw material into the cooling box (103) for forming; S4. The raw material is formed into an MPP cable protection tube. Since the tube formed from the raw material at the beginning is also "waste tube material", the output end of the third electric push rod (525) drives the fixing plate (526) to move leftward, so that the cutting knife (532) extends to the outside of the traction tube, and the output end of the driving motor (528) drives the first gear (529) to rotate, so that the second gear (530) and the rotating member (527) rotate synchronously as a whole, driving the cylinder (531) and the cutting knife (532) to rotate as a whole, and the "waste tube material" is cut off. Afterwards, the output end of the first electric push rod (506) drives the traction tube to move backward, and the "waste tube material" cut off is still adhered to the traction tube. The output end of the fourth stepping motor (522) drives the fourth screw rod (521) to rotate, so that the second L-shaped member (523) reciprocates along the fourth fixed rod (520), driving the second scraper (524) to reciprocate along the outer wall of the traction tube to scrape the "waste tube material" off the traction tube, thereby avoiding the "waste tube material" on the traction tube being too thick, resulting in the traction tube being unable to be connected with the raw material next time; S5. While the "waste pipe material" is being cut, the two groups of clamping pieces (611) are clamped with the partially formed MPP cable protection pipe, and then the output end of the fifth stepper motor (604) drives the fifth lead screw (603) to rotate, so that the movable plate (605) moves to the right along the fifth fixed rod (602), driving the two groups of clamping pieces (611) to move to the right, and the formed MPP cable protection pipe is pulled out to the outside of the cooling box (103). The whole process is automated, meeting the needs of the staff.

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