CN217834721U - Positive pressure expanding machine for heat shrinkable tube - Google Patents

Abstract

The utility model provides a pyrocondensation pipe malleation expander, including frame and setting paying out machine structure and the mechanism that goes out the line in the frame outside, be equipped with the cavity cartridge heater in the frame, the top of cavity cartridge heater is connected with interior traction conveyor, the below of cavity cartridge heater is connected with expanding mechanism, expanding mechanism's below is provided with outer traction conveyor, get into the cavity cartridge heater fast under interior traction conveyor mutually supports with outer traction conveyor and heat, and expand the shaping through expanding mechanism, carry out the assigned position by the mechanism that goes out at last, the cavity cartridge heater of this application adopts the mode heating pyrocondensation pipe in the cavity cartridge heater that the pottery heat-generating body circular telegram generates heat, it solves the environmental protection problem to need not oil-immersed bubble, utilize high accuracy proportional valve control expanding mechanism internal pressure, form the inside and outside pressure differential of tubular product and realize tubular product expansion shaping, it produces vacuum negative pressure to need not the vacuum pump, solve the workshop noise problem, the environmental protection, and low cost, production efficiency advantage.

Description

Positive pressure expanding machine for heat shrinkable tube

Technical Field

The utility model relates to an expander especially relates to pyrocondensation pipe malleation expander.

Background

The existing expanding machine is divided into a wet expanding machine and a dry expanding machine, wherein the wet expanding machine adopts a medium soaking and heating mode to heat a heat shrink tube, a common heating medium is glycerol, and the dry expanding machine adopts an internal pressure vacuum combination mode, but the existing expanding machine is not enough:

1. the replacement of glycerin seriously pollutes the environment;

2. the use of a vacuum pump causes loud workshop noise;

3. the use of vacuum pumps results in high production costs;

4. the FEP pipe is unstable in expansion;

therefore, it is necessary to provide a new positive pressure expanding machine for heat shrinkable tubes to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a can be through the mode expansion pyrocondensation pipe of no oily no vacuum negative pressure, save manufacturing cost, environmental protection, guarantee the pyrocondensation pipe malleation expander of tubular product expansion quality.

The utility model provides a pyrocondensation pipe malleation expander, including frame and the paying out machine who sets up in the frame outside constructs and outlet mechanism, be equipped with the cavity cartridge heater in the frame, the top of cavity cartridge heater is connected with interior traction conveying mechanism, the below of cavity cartridge heater is connected with expanding mechanism, expanding mechanism's below is provided with outer traction conveying mechanism, the pyrocondensation pipe one end of treating the expansion is convoluteed on the mechanism of being qualified for the next round of competitions, its other end gets into the cavity cartridge heater under the traction of interior traction conveying mechanism and heats, then expand the shaping through expanding mechanism, carry out the frame and carry the assigned position through outlet mechanism outside outer traction conveying mechanism pulls down, wherein:

the inner traction conveying mechanism comprises an installation base, inner traction rollers and a servo motor, a cavity is arranged in the installation base, two inner traction rollers which are transversely arranged in parallel are rotatably connected in the cavity, a conveying space for a heat shrinkable tube to be expanded to pass through is formed between the two inner traction rollers, the servo motor is fixedly connected to one side of the installation base, and an output shaft of the servo motor is fixedly connected with any one of the two inner traction rollers and used for driving any one of the two inner traction rollers to rotate; the top of the cavity is provided with an internal traction inlet for the heat shrinkable tube to be expanded to enter, the internal traction inlet is provided with a high-temperature-resistant sealing rubber ring, and when the heat shrinkable tube passes through the internal traction inlet, the connection between the outer surface of the heat shrinkable tube and the sealing rubber ring is sealed, so that external compressed air is prevented from leaking during production; the bottom of the cavity is provided with an internal traction outlet for outputting the heat shrinkable tube to be expanded, and the internal traction outlet is hermetically communicated with the inlet of the hollow heating cylinder; the top of the mounting base is provided with an air inlet communicated with the cavity, and external pressure gas enters the hollow heating cylinder from the air inlet, so that the air pressure inside the heat shrinkable tube to be expanded is consistent with the air pressure inside the hollow heating cylinder;

the outer surface of the hollow heating cylinder is sleeved with a ceramic heating body; after the ceramic heating body is electrified, heat emitted by the ceramic heating body is transferred to the hollow pipeline positioned in the ceramic heating body, and then the thermoplastic pipe to be expanded in the hollow pipeline is heated; the outer surface of the ceramic heating body is also provided with a heat-insulating layer;

the expansion mechanism is movably connected to the frame and comprises a die expansion pipe, an expansion die outer sleeve sleeved on the outer surface of the die expansion pipe, a die sizing pipe and a sizing die outer sleeve sleeved on the outer surface of the die sizing pipe; one end of the expansion die outer sleeve is connected with the hollow heating cylinder through a flange, and the other end of the expansion die outer sleeve is connected with the sizing die outer sleeve; the inlet of the die expansion pipe is hermetically communicated with the outlet of the hollow heating cylinder, and the outlet of the die expansion pipe is hermetically communicated with the inlet of the die sizing pipe; the upper part of the expansion die outer sleeve is provided with an exhaust hole communicated with the die expansion pipe, and a silencer is arranged on the exhaust hole; the vent hole discharges external pressure gas to ensure that the air pressure in the thermal shrinkage pipe to be expanded is greater than the air pressure of the mold expansion pipe; be equipped with cooling system on the sizing mould overcoat, cooling system is including cup jointing a plurality of cooling water rings on the sizing mould overcoat, all sets up the water injection well choke joint of connecting the water source on every cooling water ring.

Preferably, a fixed plate is installed in the frame, and a lifting mechanism is arranged on the fixed plate and comprises a guide shaft, a sliding plate and a lifting driving device for driving the sliding to ascend or descend; two groups of guide shafts are arranged, one ends of the two groups of guide shafts are fixedly connected with the fixed plate, and the other ends of the two groups of guide shafts are connected with the sliding plate in a sliding manner; the two groups of lifting driving devices are arranged, the two groups of lifting driving devices are arranged on the upper surface of the fixed plate, power ends of the two groups of lifting driving devices penetrate through the fixed plate and then are fixedly connected with the sliding plate, the outer sleeve of the expansion die is fixedly connected to the sliding plate, and the sliding plate can drive the expansion die to do ascending or descending motion under the action of the lifting driving devices.

Preferably, the mounting base is further provided with a guide mechanism, the guide mechanism comprises a guide frame, a guide roller, a guide wheel and two guide frames which are inclined outwards and arranged at the top of the rack, and the guide roller is rotatably arranged on the guide frame; the leading wheel rotates to be connected at the top of installation base, leading wheel pivoted direction.

Preferably, the external traction conveying mechanism comprises an external traction frame fixedly connected in the frame, two conveying rubber rollers transversely arranged side by side and an external traction transmission device fixedly connected on the external traction frame, a transverse sliding chute is radially formed in the external traction frame, a clamping screw is fixedly connected in the transverse sliding chute, a transverse sliding block is slidably connected on the clamping screw, and any one of the two conveying rubber rollers is rotatably connected on the transverse sliding block; a heat supply shrinkage pipe conveying space is formed between the two conveying rubber rollers which are transversely arranged side by side; the external traction transmission device drives the two conveying rubber rollers to synchronously rotate in opposite directions.

Preferably, the wire outlet mechanism comprises a wire outlet clamping and traction assembly and a wire outlet base, the wire outlet base is arranged on one side of the rack, a wire outlet communicated with one side of the rack is arranged on one side of the rack, and a wire outlet guide roller is arranged on one side, away from the rack, of the wire outlet base; the two groups of outlet clamping traction assemblies are longitudinally arranged at the top of the outlet base, and the distance between the two groups of outlet clamping traction assemblies forms a conveying space for the heat shrinkable tube to pass through;

the top of the outgoing line base is also provided with a gap adjusting device for adjusting and conveying the distance between the two groups of outgoing line clamping and traction assemblies, the gap adjusting device comprises two linkage rods, a transmission screw rod arranged between the two linkage rods, an installation block, a connection block and a lifting slide block for connecting the two linkage rods and the transmission screw rod, the installation block is fixedly connected to the top of the outgoing line base, and the two linkage rods and the transmission screw rod are equidistantly arranged on the installation block in a manner of being perpendicular to the installation block; the two linkage rods are connected with the top of the transmission screw rod through a connecting block; the lifting slide block is arranged between the mounting block and the connecting block, and the lifting slide block is connected with the two linkage rods and the transmission screw rod in a sliding manner;

the same side of the mounting block and the lifting slide block is provided with a mounting bottom plate, and the two groups of outgoing line clamping and traction assemblies are respectively mounted on the mounting bottom plates corresponding to the two groups of outgoing line clamping and traction assemblies;

the outgoing line clamping and traction assembly comprises a conveying belt, a servo motor, a first transmission shaft and a second transmission shaft, wherein the first transmission shaft and the second transmission shaft are rotatably connected to an installation bottom plate; conveyer belt tensioning is on first transmission shaft and secondary drive axle, and servo motor drives first transmission shaft and rotates to drive the conveyer belt and rotate.

Preferably, the outgoing line clamping traction assembly further comprises a bevel gear transmission mechanism, the bevel gear transmission mechanism comprises an outgoing line main transmission rod, a driving spiral bevel gear, a first driven spiral bevel gear, a second driven spiral bevel gear and a third driven spiral bevel gear, the outgoing line main transmission rod is rotatably connected to the outgoing line base, a driven sliding block is arranged at one end of the outgoing line main transmission rod, which extends out of the top of the outgoing line base, and one end of the driven sliding block is fixedly connected with a mounting base plate on the lifting sliding block; the driving spiral bevel gear is fixedly connected to an output shaft of the servo motor; the outgoing line main transmission rod is fixedly connected with a first driven spiral bevel gear, and the first driven spiral bevel gear is meshed with the driving spiral bevel gear and used for driving the outgoing line main transmission rod to rotate; the first transmission shafts of the two groups of outlet wire clamping traction assemblies are respectively and fixedly connected with third driven spiral bevel gears; two second driven spiral bevel gears which are respectively meshed with the two third driven spiral bevel gears are further sleeved on the rotating rod, and one of the second driven spiral bevel gears is rotatably connected with the driven sliding block.

Preferably, the top of the transmission screw rod is fixedly connected with an adjusting and clamping hand wheel, the transmission screw rod is rotated by rotating the adjusting and clamping hand wheel, and the lifting slide block is driven to move upwards or downwards, so that the distance between the two groups of outgoing line clamping and traction assemblies is adjusted.

Preferably, the paying-off mechanism is a reel, a connecting rod is arranged at the bottom of the rear side of the rack, the reel is rotatably connected to the connecting rod, and the heat shrinkable tube to be expanded is wound on the reel.

Preferably, two sets of paying-off mechanisms, two sets of wire outlet mechanisms, two sets of hollow heating cylinders, two sets of internal traction conveying mechanisms, two sets of expansion mechanisms and two sets of external traction conveying mechanisms are arranged on the rack, and the two sets of paying-off mechanisms, the two sets of wire outlet mechanisms, the two sets of hollow heating cylinders, the two sets of internal traction conveying mechanisms, the two sets of expansion mechanisms and the two sets of external traction conveying mechanisms are symmetrically arranged, so that two types of heat shrinkable tubes with different specifications can be synchronously expanded.

Compared with the prior art, the utility model provides a pyrocondensation pipe malleation expander has following beneficial effect:

1. the oil-free electric heating production solves the problem of environmental protection;

2. the vacuum negative pressure is not generated, and the problem of workshop noise is solved;

3. the equipment is one fourth of the production cost of crude oil expansion, so that the production cost of enterprises is saved;

4. the FEP pipe can be stably produced, solves the problem of the FEP heat-shrinkable tube which is mainly imported domestically, and reduces the production cost for use enterprises.

5. Further improve the operation stability of the equipment and the working efficiency of the equipment.

Drawings

Fig. 1 is a schematic view of the overall structure of the positive pressure expander for heat shrinkable tubes according to the present invention.

Fig. 2 is another schematic view of the positive pressure expander for heat shrinkable tubes according to the present invention.

Fig. 3 is an enlarged schematic view of a in fig. 2.

Fig. 4 is a cross-sectional view of the expanding mechanism provided by the present invention.

Fig. 5 is a schematic view of the position structure of the internal traction conveying mechanism, the hollow heating cylinder, the expanding mechanism and the external traction conveying mechanism provided by the present invention.

Fig. 6 is a schematic view of the overall structure of the external traction conveying mechanism provided by the present invention.

Fig. 7 is another angle structure diagram of the external traction conveying mechanism provided by the present invention.

Fig. 8 is another angle structure diagram of the external traction conveying mechanism provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, fig. 1 is a schematic view of an overall structure of a heat shrinkable tube positive pressure expander according to the present invention; fig. 2 is another schematic structural view of the positive pressure expander for heat shrinkable tubes provided by the present invention; FIG. 3 is an enlarged view of A in FIG. 2; fig. 4 is a schematic view of the connection structure of the internal traction conveying mechanism, the hollow heating cylinder, the expanding mechanism and the external traction conveying mechanism provided by the present invention; fig. 5 is a schematic view of the overall structure of the internal traction conveying mechanism provided by the present invention; fig. 6 is a schematic view of the overall structure of the external traction conveying mechanism provided by the present invention; fig. 7 is another angle structure diagram of the external traction conveying mechanism provided by the present invention; fig. 8 is another angle structure diagram of the external traction conveying mechanism provided by the present invention. The positive pressure expander for the heat shrinkable tube comprises a rack 1, and a paying-off mechanism 2 and a wire outlet mechanism 4 which are arranged outside the rack 1, wherein a hollow heating cylinder 7 is arranged in the rack 1, an internal traction conveying mechanism 3 is connected above the hollow heating cylinder 7, an expanding mechanism 5 is connected below the hollow heating cylinder 7, an external traction conveying mechanism 6 is arranged below the expanding mechanism 5, one end of the heat shrinkable tube to be expanded is wound on the wire inlet mechanism, the other end of the heat shrinkable tube enters the hollow heating cylinder 7 for heating under the traction of the internal traction conveying mechanism 3, then is expanded and formed through the expanding mechanism 5, and finally is conveyed out of the rack 1 under the traction of the external traction conveying mechanism 6 and is conveyed to a designated position through the wire outlet mechanism 4;

in the specific implementation process, as shown in fig. 1-8:

the internal traction conveying mechanism 3 comprises a mounting base 31, internal traction rollers and a servo motor 34, a cavity is arranged in the mounting base 31, two internal traction rollers which are transversely arranged in parallel are rotatably connected in the cavity, a conveying space for the heat shrinkable tube to be expanded to pass through is formed between the two internal traction rollers, the servo motor 34 is fixedly connected to one side of the mounting base 31, and an output shaft of the servo motor is fixedly connected with any one of the two internal traction rollers and used for driving any one of the two internal traction rollers to rotate; the top of the cavity is provided with an internal traction inlet 32 for the heat shrinkable tube to be expanded to enter, the bottom of the cavity is provided with an internal traction outlet for the heat shrinkable tube to be expanded to output, and the internal traction outlet is hermetically communicated with the inlet of the hollow heating cylinder 7; the top of cavity is equipped with the gas inlet hole 33 with the cavity intercommunication, and external pressure gas enters into in the hollow heating cylinder 7 from gas inlet hole 33 for the confession waits to expand the inside atmospheric pressure of pyrocondensation pipe and the atmospheric pressure in the hollow heating cylinder 7 is unanimous (this application is when processing pyrocondensation pipe production, and the inside gas of pyrocondensation pipe and the inside gas of hollow heating cylinder 7 all use air compression gas, and the pressure control of external pressure gas is in 6bar in the pyrocondensation pipe moreover).

The outer surface of the hollow heating cylinder 7 is sleeved with a ceramic heating body; after the ceramic heating body is electrified, heat emitted by the ceramic heating body is transferred to the hollow pipeline positioned in the ceramic heating body, and then the thermoplastic pipe to be expanded in the hollow pipeline is heated; the outer surface of the ceramic heating body is also provided with a heat-insulating layer;

it can be known from the above, in the internal traction conveying mechanism 3 of this application, its installation base 31 locates the top of frame 1, set up the cavity in the installation base 31, its top sets up the income gas pocket 33 with this cavity intercommunication, inflation equipment communicates with income gas pocket 33, import gas from going into the gas pocket in the cavity, then gas draws the export from the interior of cavity bottom and gets into in the cavity heating cylinder 7, make the pressure in the cavity heating cylinder 7 keep unanimous with the internal pressure that gets into in the cavity heating cylinder 7 and wait to expand the pyrocondensation pipe, avoid waiting to expand the pyrocondensation pipe when heating, its internal pressure is greater than external pressure and the expansion deformation. Before the heat shrinkable tube to be expanded is heated, the other end of the heat shrinkable tube to be expanded is connected with an air compression pump, and the air compression pump fills gas into the heat shrinkable tube to be expanded, so that the internal pressure of the heat shrinkable tube to be expanded is consistent with the external pressure.

Moreover, the hollow heating cylinder 7 adopts a way of electrifying and heating the ceramic heating element to heat the heat-shrinkable tube in the hollow heating cylinder 7, and the problem of environmental protection is solved without glycerol soaking;

furthermore, gas is from the top of hollow heating cylinder 7 down input bottom in the hollow heating cylinder 7, prevents effectively that the heat in the hollow heating cylinder 7 from toward rising, can keep the temperature in the hollow heating cylinder 7 even, and the built-in heat preservation of hollow heating cylinder 7 that combines again can keep the whole temperature uniformity of hollow heating cylinder 7, makes the quick even heating product of the pyrocondensation pipe process hollow heating cylinder 7 that treats the expansion.

In addition, the expanding mechanism 5 is movably connected to the frame 1, and comprises a die expanding pipe 53, an expanding die outer sleeve 51 sleeved on the outer surface of the die expanding pipe 53, a die sizing pipe 54 and a sizing die outer sleeve 52 sleeved on the outer surface of the die sizing pipe 54; one end of the expansion die outer sleeve 51 is connected with the hollow heating cylinder 7 through a flange 71, and the other end is connected with the sizing die outer sleeve 52; the inlet 56 of the die expanding tube 53 is in sealed communication with the outlet of the hollow heating cylinder 7, and the outlet of the die expanding tube 53 is in sealed communication with the inlet of the die sizing tube 54; the upper part of the expansion die jacket 51 is provided with an exhaust hole 55 communicated with the die expansion pipe 53, and a silencer 57 is arranged on the exhaust hole 55; the exhaust hole 55 exhausts the external pressure gas so that the pressure inside the heat shrinkable tube to be expanded is greater than that of the mold expansion tube 53; be equipped with cooling system on sizing mould overcoat 52, cooling system is including cup jointing a plurality of cooling water ring 1000 on sizing mould overcoat 52, all sets up the water injection well choke joint 1001 who connects the water source on every cooling water ring 1000. In detail:

the upper part of the expansion die jacket 51 is provided with an exhaust hole 55 communicated with the die expansion pipe 53, and gas input from the gas inlet hole 33 is exhausted from the exhaust hole 55 after passing through the hollow heating cylinder 7, so that the pressure in the die expansion pipe 53 is reduced, therefore, when the heated heat shrinkable pipe to be expanded is output from the outlet of the hollow heating cylinder 7 and enters the die expansion pipe 53 through the inlet 56 of the die expansion pipe 53, because the pressure in the die expansion pipe 53 is lower than the internal pressure of the heat shrinkable pipe to be expanded, the pressure difference between the inside and the outside of the heat shrinkable pipe is formed, the heat shrinkable pipe in the expansion of the heat shrinkable pipe is expanded and deformed, a vacuum pump is not needed to generate vacuum negative pressure, and the problem of workshop noise is solved; obtain stable, ideal differential pressure value through controlling the interior pressure of mould expansion pipe 53, guarantee FEP tubular product can stable production, solve the FEP pyrocondensation pipe that domestic former use import as the main, give use enterprise reduction in production cost.

As another embodiment of the utility model, the heat preservation layer adopts environment-friendly aluminum silicate fireproof heat preservation cotton for heat preservation, the aluminum silicate fireproof heat preservation cotton is filled in the 304 stainless steel shell, and the 304 stainless steel shell is sleeved on the outer surface of the ceramic heating body;

as another embodiment of the utility model, the upper and lower parts of the hollow heating cylinder 7 are also provided with temperature controllers which are connected with the power circuit and can precisely control the temperature in the hollow heating cylinder.

As the utility model discloses a another embodiment, distance between the traction roller in this application two can be with according to product size adjustment, with according to the different speeds of setting for of product when the motion, can stably pull in the pyrocondensation pipe gets into the heating cylinder, in detail: two inner traction sliding grooves are symmetrically formed in the cavity of the mounting base 31, an inner traction sliding block is arranged in each inner traction sliding groove in a sliding mode, two ends of one inner traction roller of the two inner traction rollers are connected to one inner traction sliding block corresponding to the inner traction roller in a rotating mode respectively, and the positions of the two inner traction sliding blocks, including the traction sliding grooves, at the two ends of the inner traction roller are adjusted to enable the two inner traction rollers to be far away from or close to each other, so that the distance between the two inner traction rollers is adjusted.

As another embodiment of the utility model, still be equipped with the viewing aperture and the activity sealing door that are used for observing the inside condition of cavity on the installation base 31 of this application, make things convenient for operating personnel to maintain and handle unusually.

Furthermore, the mounting base 31 is further provided with a guide mechanism 8, the guide mechanism 8 comprises a guide frame 81, a guide roller 82, a guide wheel 83, and two guide frames 81 inclined outwards at the top of the rack 1, and the guide roller 82 is rotatably arranged on the guide frame 81; the guide wheel 83 is rotatably connected to the top of the mounting base 31, and the direction in which the guide wheel 83 rotates. Accordingly, the internal traction conveying mechanism 3 pulls the heat shrinkable tube to be expanded to move, and the heat shrinkable tube to be expanded can enter the hollow heating cylinder 7 more smoothly and accurately under the guidance of the guide roller 82 and the guide wheel 83, so that the heat shrinkable tube to be expanded is not easily worn.

In order to better improve the application range of the equipment, solve the convenience of the equipment for processing the heat shrinkable tubes with different sizes, and simultaneously facilitate the work problems of later maintenance of workers including tube penetration, tube replacement in the middle of expansion and the like, as shown in fig. 5, the following preferable technical scheme is provided:

as another embodiment of the present application, a fixed plate 11 is installed in the frame 1, a lifting mechanism 100 is provided on the fixed plate 11, and the lifting mechanism 100 includes a guide shaft 101, a sliding plate 102, and a lifting driving device 103 for driving the sliding to ascend or descend; two groups of guide shafts 101 are arranged, and one ends of the two groups of guide shafts 101 are fixedly connected with the fixed plate 11 respectively, and the other ends are connected with the sliding plate 102 in a sliding manner; the two groups of lifting driving devices 103 are arranged, the two groups of lifting driving devices 103 are arranged on the upper surface of the fixed plate 11, power ends of the two groups of lifting driving devices 103 penetrate through the fixed plate 11 and then are fixedly connected with the sliding plate 102, and the sliding plate 102 can ascend or descend under the action of the lifting driving devices 103; the lifting driving device in this embodiment is a cylinder.

Accordingly, the expanding mechanism 5 can be driven by the lifting mechanism 100 to perform lifting movement in the frame 1, which is convenient for workers to replace pipes and penetrate pipes in the later period, and for the mold in the expanding mechanism 5 to be replaced, so as to process heat shrinkable pipes with different sizes. The lifting mechanism adopts double cylinders to work simultaneously, and the operation stability of the lifting mechanism 100 is ensured.

In order to better solve the technical problem that the dependency of the heat shrinkable tube conveying process on the working experience of workers is high, if the heat shrinkable tube is clamped and conveyed by the accuracy of the distance between the conveying positions in the conveying process, the heat shrinkable tube is prone to position deviation or stagnation, and the product quality and the working efficiency are affected, as shown in fig. 5, the following preferable technical scheme is provided:

specifically, the external traction conveying mechanism 6 comprises an external traction frame 61 fixedly connected in the frame 1, two conveying rubber rollers 62 transversely arranged side by side, and an external traction transmission device fixedly connected on the external traction frame 61, wherein a transverse moving chute 63 is radially arranged on the external traction frame 61, a clamping screw 64 is horizontally arranged in the transverse moving chute 63, one end of the clamping screw 64 extends out of the external traction frame 61, a transverse moving sliding block is slidably connected on the clamping screw 64, the transverse moving sliding block can be driven to horizontally move by rotating the clamping screw 64, and any one of the two conveying rubber rollers 62 is rotatably connected on the transverse moving sliding block; a heat supply shrinkage pipe conveying space is formed between two conveying rubber rollers 62 which are transversely arranged side by side, the space is positioned right below an outlet of a die sizing pipe 54 in the expansion mechanism 5, an operator can drive the conveying rubber rollers on the transverse sliding block to horizontally move relative to the other conveying rubber roller by rotating one end of a clamping screw extending out of the outer traction frame 61 (even if the transverse sliding block moves, the position of one rubber roller 62 fixedly connected to the transverse sliding block can be adjusted to enable the rubber roller to be close to or far away from the other rubber roller 62), and the distance of the heat supply shrinkage pipe conveying space formed between the two conveying rubber rollers 62 is adjusted to adapt to conveying of heat shrinkage pipes with different sizes; the external traction transmission device drives the two conveying rubber rollers 62 to synchronously rotate in opposite directions. In this application, the external traction transmission device is a servo motor.

When the device works, the internal traction conveying mechanism 3 and the external traction conveying mechanism 6 are vertically distributed and are in mutual coordination, and the heat-shrinkable tube to be expanded is pulled into the cavity, so that the heat-shrinkable tube to be expanded can be vertically and fast fed into the hollow heating cylinder 7 for heating and can be quickly and accurately brought into the expansion mechanism 5 for expansion, processing and shaping, the conveying position is not easy to deviate, and the production efficiency is improved.

In order to solve the technical problems of various working procedures and large operation force of workers of the conventional positive pressure expanding machine for heat shrinkable tubes, the following preferred technical scheme is provided as shown in fig. 6-8:

the outgoing line mechanism 4 comprises two groups of outgoing line clamping and traction components 41 and an outgoing line base 42, the outgoing line base 42 is arranged on one side of the rack 1, an outgoing line port 12 communicated with one side of the rack 1 is arranged on one side of the rack 1, the two groups of outgoing line clamping and traction components are longitudinally arranged on the top of the outgoing line base 42, and a conveying space 4200 for a heat supply shrinkage pipe to pass through is formed by the distance between the two groups of outgoing line clamping and traction components; one side of the outgoing line base 42, which is far away from the rack 1, is rotatably connected with an outgoing line guide roller 43, and the expanded heat-shrinkable tube is output through a conveying space 4200 between the two groups of outgoing line clamping and traction assemblies and then is brought out to a specified position along the outgoing line guide roller 43;

in addition, the top of the outgoing line base 42 is also provided with a gap adjusting device 44 for adjusting the distance between the two groups of outgoing line clamping and pulling assemblies, the gap adjusting device 44 comprises two linkage rods (401, 403), a transmission screw rod 402 arranged between the two linkage rods (401, 403), an installation block 4004, a connection block 4002 and a lifting slide block 4003 for connecting the two linkage rods (401, 403) and the transmission screw rod 402, the installation block 4004 is fixedly connected to the top of the outgoing line base 42, and the two linkage rods (401, 403) and the transmission screw rod 402 are equidistantly arranged on the installation block 4004 in a manner of being perpendicular to the installation block 4004; the two linkage rods (401, 403) are connected with the top of the transmission screw rod 402 through a connecting block 4002; the lifting slide block 4003 is arranged between the mounting block 4004 and the connecting block 4002, and the lifting slide block 4003 is in sliding connection with the two linkage rods (401, 403) and the transmission screw rod 402;

the same side of the mounting block 4004 and the lifting slide block 4003 is provided with a mounting bottom plate 404, and the two groups of outgoing line clamping and pulling components are respectively mounted on the mounting bottom plates 404 corresponding to the outgoing line clamping and pulling components;

the outgoing line clamping and pulling assembly comprises a conveying belt 410, a servo motor 34, a first transmission shaft 411 and a second transmission shaft 412 which are rotatably connected to the mounting base plate 404; the conveying belt 410 is tensioned on the first transmission shaft 411 and the second transmission shaft 412, and the servo motor 34 drives the first transmission shaft 411 to rotate, so as to drive the conveying belt 410 to rotate.

As another embodiment of the present invention, the wire-outgoing clamping and pulling assembly further comprises a bevel gear transmission mechanism, the bevel gear transmission mechanism comprises a wire-outgoing main transmission rod 4005, a driving spiral bevel gear 431, a first driven spiral bevel gear 432, a second driven spiral bevel gear 434, and a third driven spiral bevel gear 433, the wire-outgoing main transmission rod 4005 is rotatably connected to the wire-outgoing base 42, and one end of the top of the wire-outgoing base 42, which extends therefrom, is provided with a driven slider 4006, one end of the driven slider 4006 is fixedly connected to the mounting base plate 404 on the lifting slider 4003; the driving spiral bevel gear 431 is fixedly connected to an output shaft of the servo motor 34; a first driven spiral bevel gear 432 is fixedly connected to the outgoing line main transmission rod 4005, and the first driven spiral bevel gear 432 is meshed with the driving spiral bevel gear 431 and used for driving the outgoing line main transmission rod 4005 to rotate; a third driven spiral bevel gear 433 is respectively fixedly connected to the first transmission shafts 411 of the two groups of outlet clamping traction assemblies; two second driven spiral bevel gears 434 which are respectively meshed with the two third driven spiral bevel gears 433 are further sleeved on the rotating rod, one second driven spiral bevel gear 434 is rotatably connected with the driven sliding block 4006, and the other second driven spiral bevel gear 434 is rotatably connected with the wire outlet base 42.

Furthermore, the top of the transmission screw rod 402 is also fixedly connected with an adjusting and clamping hand wheel 4001, the transmission screw rod 402 is rotated by rotating the adjusting and clamping hand wheel 4001, and the lifting slide block 4003 is driven to move upwards or downwards, so that the width of the conveying space can be adjusted, and heat shrinkable tubes with different sizes can pass through the conveying space.

Furthermore, paying out mechanism 2 is the reel, and the bottom of frame 1 rear side is equipped with the connecting rod, and the reel rotates to be connected on the connecting rod, winds the pyrocondensation pipe that remains to expand on the reel.

In order to better improve the production efficiency of the equipment, as shown in fig. 1, the following preferred technical scheme is provided:

two sets of paying out machine constructs 2, two sets of mechanism 4 of being qualified for the next round of competitions, two sets of cavity heating drums 7, two sets of interior conveying mechanism 3 that pull, two sets of expanding mechanism 5, two sets of conveying mechanism 6 that pull outward are equipped with on frame 1, and two sets of paying out machine constructs 2, two sets of mechanism 4 of being qualified for the next round of competitions, two sets of cavity heating drums 7, two sets of interior conveying mechanism 3 that pull, two sets of expanding mechanism 5, two sets of conveying mechanism 6 that pull outward equal symmetry setting, realize the pyrocondensation pipe of two different specifications of synchronous expansion, efficiency more than twice of original equipment productivity.

In summary, in the present application, various heat shrinkable tubes (PVDF, FEP, PFA, fluororubber, double-wall or single-wall heat shrinkable tubes, etc.) are led to the top of the rack 1 from the wire releasing frame mechanism through the inner traction conveying mechanism 3, and then led to enter the inlet port 36 of the traction tube 32 by the guide wheel 8338 of the inner traction conveying mechanism 3, the tube moves vertically downward from the traction tube 32, passes through and enters the hollow heating cylinder 7 from the inlet port 36 of the hollow heating cylinder 7, the ceramic heating element outside the hollow heating cylinder 7 is energized to heat the heat shrinkable tube in the hollow heating cylinder 7 at a high temperature (although it should be noted that the hollow heating cylinder 7 is set to heat at different temperatures according to different products before working, the heat shrinkable tube enters the hollow heating cylinder 7 to heat when the temperature in the heating tube reaches the predetermined material characteristic temperature), the heated heat shrinkable tube enters the mold expansion tube 53 from the inlet 56 of the mold expansion tube 53, and starts the mold expansion tube 53 to expand the pressure to expand the heat shrinkable tube, the expanded heat shrinkable tube 54 enters the mold sizing tube to cool the heat shrinkable tube, and the outer traction conveying mechanism 6 conveys the heat shrinkable tube out of the specified position of the wire through the wire releasing frame 1 and traction conveying mechanism 4.

The method has the advantages of high efficiency, energy conservation and environmental protection; during production, oil is not used for heating products, and a negative pressure vacuum pump is not used, so that the production cost is 1/4 of that of the traditional wet expansion, 1/5 of that of the positive pressure oil expansion and 1/2 of that of the dry negative pressure electric heating. The production of the no oil vacuum negative pressure of this application accomplish not have, noiselessness, reduction blowdown, give the good environment in workshop, reduce the critique. The productivity is improved, the oil expansion of the same product is improved by 30 percent, and the negative pressure electric heating expansion is improved by 100 percent; the positive pressure expansion improves the productivity by 50 percent, and the equipment has two groups of production lines, can simultaneously expand two products with the same or different types, and is worthy of popularization.

The above is only the embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent structures or equivalent processes made by the contents of the specification and the drawings are utilized, or directly or indirectly applied to other related technical fields, and all the same principles are included in the patent protection scope of the present invention.

Claims (9)

1. Pyrocondensation pipe malleation expander, including frame and setting paying out machine structure and the mechanism that goes out the line in the frame outside, be equipped with the cavity heating cylinder in the frame, the top of cavity heating cylinder is connected with interior conveying mechanism that pulls, the below of cavity heating cylinder is connected with expanding mechanism, expanding mechanism's below is provided with outer conveying mechanism that pulls, treat that the pyrocondensation pipe one end of expansion is convoluteed on the mechanism of going into the line, its other end draws conveying mechanism to pull down through interior and gets into the cavity heating cylinder and heat down, then expand the shaping through expanding mechanism, carry out the frame and carry the assigned position through the mechanism that goes out outside the conveying of pulling conveying mechanism outside, its characterized in that:

the inner traction conveying mechanism comprises an installation base, inner traction rollers and a servo motor, a cavity is arranged in the installation base, two inner traction rollers which are transversely arranged in parallel are rotatably connected in the cavity, a conveying space for a heat shrinkable tube to be expanded to pass through is formed between the two inner traction rollers, the servo motor is fixedly connected to one side of the installation base, and an output shaft of the servo motor is fixedly connected with any one of the two inner traction rollers and used for driving any one of the two inner traction rollers to rotate; the top of the cavity is provided with an internal traction inlet for the heat shrinkable tube to be expanded to enter, the internal traction inlet is provided with a high-temperature-resistant sealing rubber ring, and when the heat shrinkable tube passes through the internal traction inlet, the connection between the outer surface of the heat shrinkable tube and the sealing rubber ring is sealed, so that external compressed air is prevented from leaking during production; the bottom of the cavity is provided with an inner traction outlet for outputting the heat shrinkable tube to be expanded, and the inner traction outlet is hermetically communicated with the inlet of the hollow heating cylinder; the top of the mounting base is provided with an air inlet communicated with the cavity, and external pressure gas enters the hollow heating cylinder from the air inlet, so that the air pressure inside the heat shrinkable tube to be expanded is consistent with the air pressure inside the hollow heating cylinder;

the outer surface of the hollow heating cylinder is sleeved with a ceramic heating body; after the ceramic heating body is electrified, heat emitted by the ceramic heating body is transferred to the hollow pipeline positioned in the ceramic heating body, and then the thermoplastic pipe to be expanded in the hollow pipeline is heated; the outer surface of the ceramic heating body is also provided with a heat-insulating layer;

the expansion mechanism is movably connected to the frame and comprises a die expansion pipe, an expansion die outer sleeve sleeved on the outer surface of the die expansion pipe, a die sizing pipe and a sizing die outer sleeve sleeved on the outer surface of the die sizing pipe; one end of the expansion die outer sleeve is connected with the hollow heating cylinder through a flange, and the other end of the expansion die outer sleeve is connected with the sizing die outer sleeve; the inlet of the die expanding pipe is communicated with the outlet of the hollow heating cylinder in a sealing way, and the outlet of the die expanding pipe is communicated with the inlet of the die sizing pipe in a sealing way; the upper part of the expansion die outer sleeve is provided with an exhaust hole communicated with the die expansion pipe, and a silencer is arranged on the exhaust hole; the vent hole discharges external pressure gas to ensure that the air pressure in the thermal shrinkage pipe to be expanded is greater than the air pressure of the mold expansion pipe; be equipped with cooling system on the sizing mould overcoat, cooling system is including cup jointing a plurality of cooling water rings on the sizing mould overcoat, all sets up the water injection well choke joint of connecting the water source on every cooling water ring.

2. The positive pressure expander of heat shrinkable tube according to claim 1, wherein the mounting base is further provided with a guide mechanism, the guide mechanism comprises a guide frame, a guide roller, a guide wheel, and two guide frames inclined outwards at the top of the frame, and the guide roller is rotatably arranged on the guide frame; the leading wheel rotates to be connected at the top of installation base, leading wheel pivoted direction.

3. The positive pressure expander of heat shrinkable tube according to claim 1, wherein a fixed plate is installed in the frame, and a lifting mechanism is provided on the fixed plate, and the lifting mechanism comprises a guide shaft, a sliding plate, and a lifting driving device for driving the sliding to ascend or descend; two groups of guide shafts are arranged, one ends of the two groups of guide shafts are fixedly connected with the fixed plate, and the other ends of the two groups of guide shafts are connected with the sliding plate in a sliding manner; the two groups of lifting driving devices are arranged, the two groups of lifting driving devices are arranged on the upper surface of the fixed plate, power ends of the two groups of lifting driving devices penetrate through the fixed plate and then are fixedly connected with the sliding plate, the outer sleeve of the expansion die is fixedly connected to the sliding plate, and the sliding plate can drive the expansion die to do ascending or descending motion under the action of the lifting driving devices.

4. The positive pressure pyrocondensation pipe expander as claimed in claim 1, wherein the outer traction conveying mechanism includes an outer traction frame fixedly connected to the inside of the frame, two conveying rubber rollers arranged side by side in the transverse direction, and an outer traction transmission device fixedly connected to the outer traction frame, the outer traction frame is provided with a transverse sliding chute in the radial direction, the transverse sliding chute is horizontally provided with a clamping screw, one end of the clamping screw extends out of the outer traction frame, the clamping screw is slidably connected with a transverse sliding block, and the transverse sliding block can be driven to move horizontally by rotating the clamping screw; any one of the two conveying rubber rollers is rotationally connected to the transverse moving sliding block; a heat supply shrinkage pipe conveying space is formed between the two conveying rubber rollers which are transversely arranged side by side; the external traction transmission device drives the two conveying rubber rollers to synchronously rotate in opposite directions.

5. The heat shrinkable tube positive pressure expander according to claim 1, wherein: the wire outlet mechanism comprises a wire outlet clamping and traction assembly, a wire outlet driving device and a wire outlet base, the wire outlet base is arranged on one side of the rack, a wire outlet communicated with one side of the rack is arranged on one side of the rack, and a wire outlet guide roller is arranged on one side, away from the rack, of the wire outlet base; the two groups of outlet clamping traction assemblies are longitudinally arranged at the top of the outlet base, and the distance between the two groups of outlet clamping traction assemblies forms a conveying space for the heat shrinkable tube to pass through; one side of the outgoing line base, which is far away from the rack, is rotatably connected with an outgoing line guide roller, and the expanded heat shrink tube is output through a conveying space between the two groups of outgoing line clamping and traction assemblies and then is taken out to a specified position along the outgoing line guide roller;

the top of the outgoing line base is also provided with a gap adjusting device for adjusting the distance between the two groups of outgoing line clamping and traction assemblies, the gap adjusting device comprises two linkage rods, a transmission screw rod arranged between the two linkage rods, an installation block, a connection block and a lifting slide block for connecting the two linkage rods and the transmission screw rod, the installation block is fixedly connected to the top of the outgoing line base, and the two linkage rods and the transmission screw rod are equidistantly arranged on the installation block in a manner of being perpendicular to the installation block; the two linkage rods are connected with the top of the transmission screw rod through a connecting block; the lifting slide block is arranged between the mounting block and the connecting block, and the lifting slide block is connected with the two linkage rods and the transmission screw rod in a sliding manner;

the same side of the mounting block and the lifting slide block is provided with a mounting bottom plate, and the two groups of outgoing line clamping and traction assemblies are respectively mounted on the mounting bottom plates corresponding to the two groups of outgoing line clamping and traction assemblies;

the outgoing line clamping and traction assembly comprises a conveying belt, a servo motor, a first transmission shaft and a second transmission shaft, wherein the first transmission shaft and the second transmission shaft are rotatably connected to an installation bottom plate; conveyer belt tensioning is on first transmission shaft and secondary drive axle, and servo motor drives first transmission shaft and rotates to drive the conveyer belt and rotate.

6. The heat shrinkable tube positive pressure expander according to claim 5, wherein: the outgoing line clamping traction assembly further comprises a bevel gear transmission mechanism, the bevel gear transmission mechanism comprises an outgoing line main transmission rod, a driving spiral bevel gear, a first driven spiral bevel gear, a second driven spiral bevel gear and a third driven spiral bevel gear, the outgoing line main transmission rod is rotatably connected to the outgoing line base, a driven sliding block is arranged at one end of the top of the outgoing line base, which extends, and one end of the driven sliding block is fixedly connected with a mounting base plate on the lifting sliding block; the driving spiral bevel gear is fixedly connected to an output shaft of the servo motor; the outgoing line main transmission rod is fixedly connected with a first driven spiral bevel gear, and the first driven spiral bevel gear is meshed with the driving spiral bevel gear and used for driving the outgoing line main transmission rod to rotate; the first transmission shafts of the two groups of outlet wire clamping and traction assemblies are respectively and fixedly connected with third driven spiral bevel gears; two second driven spiral bevel gears which are respectively meshed with the two third driven spiral bevel gears are further sleeved on the rotating rod, one second driven spiral bevel gear is rotatably connected with the driven sliding block, and the other second driven spiral bevel gear is rotatably connected with the wire outlet base.

7. The heat shrinkable tube positive pressure expander according to claim 6, wherein an adjusting and clamping hand wheel is further fixedly connected to the top of the transmission screw rod, and the transmission screw rod is rotated by rotating the adjusting and clamping hand wheel and drives the lifting slide block to move upwards or downwards, so that the distance between the two groups of outgoing line clamping and pulling components is adjusted.

8. The positive pressure expander of heat shrinkable tube according to claim 1, wherein the paying off mechanism is a reel, a connecting rod is provided at the bottom of the rear side of the frame, the reel is rotatably connected to the connecting rod, and the heat shrinkable tube to be expanded is wound around the reel.

9. The positive pressure thermal shrinkable tube expander according to claim 1, wherein two sets of paying out mechanisms, two sets of outgoing line mechanisms, two sets of hollow heating cylinders, two sets of internal traction conveying mechanisms, two sets of expanding mechanisms and two sets of external traction conveying mechanisms are arranged on the frame, and the two sets of paying out mechanisms, the two sets of outgoing line mechanisms, the two sets of hollow heating cylinders, the two sets of internal traction conveying mechanisms, the two sets of expanding mechanisms and the two sets of external traction conveying mechanisms are symmetrically arranged, so that two types of thermal shrinkable tubes with different specifications can be synchronously expanded.

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