WO2023030549A1

WO2023030549A1 - Heat pipe assembly, irregularly inclined pipe-type hot roller comprising heat pipe assembly, and machining method thereof

Info

Publication number: WO2023030549A1
Application number: PCT/CN2022/122135
Authority: WO
Inventors: 周焕民
Original assignee: 江苏中杰澳新材料有限公司
Priority date: 2021-09-02
Filing date: 2022-09-28
Publication date: 2023-03-09
Also published as: CN113638065B; CN113638065A

Abstract

A heat pipe assembly is provided. The heat pipe assembly comprises a plurality of irregularly inclined pipes (1) arranged in an axial direction, and a radial annular groove (2) in communication with the plurality of irregularly inclined pipes. The radial section of each irregularly inclined pipe comprises a first curved surface part (A) and a second curved surface part (B), which have a same axial taper. The axial taper is the inclination of the irregularly inclined pipes. The first curved surface part and the second curved surface part are connected one to the other to form the irregularly inclined pipe. The radius of the inner surface of the first curved surface part is Rb, the radius of the outer surface of the second curved surface part at the corresponding position of the first curved surface part is Rb, and the outer surface of the second curved surface part is axially machined into a plurality of channels having a radius of Ra. An irregularly inclined pipe-type heat roller is also provided. The irregularly inclined pipe machining is completed by means of a step-by-step process; that is, a first curved surface part and a second curved surface part are respectively completed, then the first curved surface part and the second curved surface part are attached, spliced, and welded. The quality requirements of the irregularly inclined pipe are easy to achieve, and the machining cost is low.

Description

Heat pipe assembly, special-shaped inclined tube type heat roller including heat pipe assembly and processing method thereof

technical field

The invention relates to the technical field of heat rollers for high-speed drafting of chemical fibers, in particular to a heat pipe assembly, a special-shaped inclined-tube type heat roller including the heat pipe assembly, and a processing method thereof.

Background technique

At present, the heating method of the drafting hot roller in the chemical fiber industry is to use electromagnetic induction heating. The induction coil input with high-frequency current generates an alternating magnetic field to heat the roller body. The heat lost due to fiber removal and air diffusion is an efficient direct heating method.

Chinese patent CN2258173Y discloses a multi-zone induction hot drafting roller, which is composed of a godet, a multi-zone induction coil, a multi-channel temperature measuring sensor, and a multi-channel temperature transmitter; ), the induction coils in zones 2-7 are selected to directly heat the roller body of the hot roller, and then the temperature of each zone detected by the temperature sensor is sent to the control system by a multi-channel temperature transmitter, so that the temperature of each measuring point is within the set temperature. Equilibrium is reached at the working temperature. It can make the temperature uniformity of the surface of the roller meet the requirement of ±1-2°C, and can be used in the industrial production of the spinning speed of 1000-6000m/min on the spinning-drawing combination machine for civilian yarn and industrial yarn.

The other is the steam jacket heat transfer method, which uses electromagnetic induction to heat the roller body, so that the liquid in the jacket is vaporized after being heated, and achieves the balance of the gas-liquid phase transition. In addition to the heat transfer of the roller body itself, there are also The temperature in the working area is guaranteed to be uniform by means of rapid heat transfer in the gas phase. The heat pipe is arranged in a direction parallel to the central axis (horizontal heat pipe), and the heating method is the full-length heating method of the roller body, that is, the length of the induction coil is equivalent to the length of the roller body, the mass of the roller body is large, and the stress on the motor shaft is large. Length is limited.

The depth of induction heating has an inverse relationship with the frequency of alternating current, that is, the higher the frequency, the shallower the heating depth. In the steam jacket heating heat transfer mode, after the hot roller rotates at high speed, due to the centrifugal force, the liquid in the jacket is outside the roller body, and the induction heating heat source is inside the roller body. The heating of the heat medium liquid still needs to pass through the material of the roller body. heat transfer can be achieved.

In addition, the above all belong to the heating method of the full length of the hot roller. The hot roller is made of steel, and the proportion of the iron core wound with the coil is also very large. The mass of the roller has a linear relationship with the length of the roller body, but the stress on the motor shaft is less It is a square relationship, so the length of the roller body is greatly limited.

Another way is to reduce the length of the induction heating section on the premise that the principle of induction heating remains unchanged. For example, the invention patent CN105155006B discloses that the length of the heating section is controlled to be less than half of the axial length of the heating roller. One end of the heat roller is closed, and the other end is punched with many inclined holes for heat pipes. The root of each inclined hole for heat pipes is connected and sealed as a whole. The length of the induction heating ferritic stainless steel sleeve of the hot roller is 30-45% of the total length of the roller body, the heating method is high-frequency electromagnetic heating, and the heating object is a liquid medium. Moreover, the heat pipe adopts the inclined hole design, and the angle of the inclined hole of the heat pipe is that the inclined hole at the B end of the heating section is close to the outside of the roller surface (large radius), and the A end is close to the inside of the roller surface (small radius). Theoretically, during the high-speed operation of the heat roller, the heat medium liquid condensed at the A end can quickly flow back to the B end heating section under the action of centrifugal force, and receive heat again for gasification.

In the above design using heat pipes, many heat pipe holes need to be drilled around the roller body. The number of heat pipe holes generally reaches more than 50. In a relatively small wall thickness, it is necessary to ensure that each heat pipe hole has a similar slope, which is difficult to process. The technical difficulty is high, and it is easy to scrap the entire roller body because one of the holes fails to meet the requirements during the processing. Based on this situation, Japan’s TMT company disclosed in Chinese patent CN107787058A that on the basis of the original heat pipe heat roller, a layer of high heat conduction carbon fiber composite material is arranged on the inner side of the roller body as a heat uniform layer to replace the heat pipe. In the case of frequency heating, the axial heat transfer is improved and the wall thickness is reduced to achieve the goal of rapid heating and temperature uniformity of the surface of the hot roller.

The biggest benefit and advantage of the design of the inclined tube heat roller is that local high-frequency heating can be used, reducing the length of the heating section can simplify the high-frequency heating structure and reduce the weight of the heat roller, which is of great significance for improving the technology of the heat roller , but how to solve high-quality and efficient manufacturing of many heat pipe holes is still a major problem in production.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a heat pipe assembly, a special-shaped inclined-tube type heat roller including a heat pipe assembly and a processing method thereof, in order to solve the difficulty in processing heat pipe heat rollers, especially the difficulty in batch processing question.

According to the high-speed rotary special-shaped inclined tube type heat roller and its processing method of the present invention, there are many special-shaped inclined pipes distributed on the radial section of the heat roller body, and the special-shaped inclined pipes are surrounded by the first curved surface and the second curved surface. One of the cases is surrounded by a circular arc with a radius of Ra and a circular arc with a radius of Rb, and on the radii of different radial sections, the arcs with a radius of Ra are the same, and the radius Rb will vary with the position of the section It varies from person to person, and its changing trend is that the arc radius Rb1 of the tangent surface close to the heat roller motor end is always greater than the arc radius Rb2 of the tangent surface away from the heat roller motor end. The inclination of the central axis of the body is in a consistent corresponding relationship. For the processing of the special-shaped inclined tube type heat roller body, the first curved surface and the second curved surface are machined first, and then the two components are closely fitted and assembled. It is welded; many axial grooves are processed on the bonding surface of the second curved surface, as a component of the special-shaped inclined pipe, and radial annular grooves are processed at different positions at both ends or in the middle to connect the above-mentioned special-shaped inclined pipe , this processing method avoids the shortcomings of low processing quality, difficult processing, and high processing cost when the usual heat pipe type heat roller is used to drill deep holes. It has the characteristics of simple processing and manufacturing, stable and reliable process, especially in the manufacture of gradient inclined holes. Under the circumstances, it shows the advantages of simple processing and stable performance.

The technical scheme adopted in the present invention is:

A heat pipe assembly, wherein: the heat pipe assembly includes a plurality of special-shaped inclined tubes arranged axially and a radial annular groove connecting the plurality of special-shaped inclined tubes, and the radial section of each of the special-shaped inclined tubes includes the same axis The first curved surface and the second curved surface of the taper, the axial taper is the slope of the special-shaped inclined pipe, the first curved surface and the second curved surface are connected to each other to form a special-shaped inclined pipe, and the inner surface of the first curved surface The surface radius is Rb, and the radius of the outer surface of the second curved surface corresponding to the first curved surface is Rb, and the outer surface of the second curved surface is axially processed with a plurality of grooves with a radius of Ra.

Preferably, the heat pipe assembly, wherein: each of the grooves is in the shape of a semicircle, an arc less than half a circle, or an arc greater than half and less than three quarters of a circle One of the arc shapes.

Preferably, in the heat pipe assembly described above, the radial annular grooves are arranged at two ends and/or in the middle of the outer surface of the second curved surface, and the number is 1-8.

Preferably, in the heat pipe assembly, wherein: the radial annular grooves are arranged at two ends and/or in the middle of the outer surface of the second curved surface, and the number is 2-4.

Preferably, the heat pipe assembly, wherein: the axial slope of the first curved surface and the second curved surface are the same; the axial slope of the contact surface of each of the first curved surface and the second curved surface The degree is 0.5°-2.5°.

Preferably, the heat pipe assembly, wherein: each of the first curved surface and the second curved surface includes a low-slope section and a high-slope section, and the slope of the low-slope section is 0-0.5 °, the slope of the high slope section is 0.5°-2.5°.

Preferably, in the heat pipe assembly, wherein: the length of the low-slope section accounts for 20%-45% of the total length of the special-shaped inclined pipe.

A special-shaped inclined tube type heat roller including a heat pipe assembly, wherein: the heat roller includes a roller body, a heat pipe assembly is arranged in the roller body, a connecting taper sleeve is fixedly connected to the roller body, and a connecting taper sleeve is arranged on the roller body. The motor shaft, the motor shaft is connected to the roller body through the connecting tapered sleeve, the motor shaft is provided with a connecting seat, the connecting seat is provided with an induction heating mechanism, one end of the connecting seat is connected to the shaft seat, and the shaft seat is connected to the motor, The motor is connected with a temperature transmitter.

Preferably, the special-shaped inclined tube type heat roller, wherein: the roller body is made of steel or aluminum alloy, and when the roller body is made of aluminum alloy, a sleeve is arranged on the inner wall of the roller.

A processing method for a special-shaped inclined tube type heat roller, wherein: comprising the following steps:

S1. Provide a first curved surface and a second curved surface, and process a plurality of grooves with a radius Ra on the outer surface of the second curved surface in the axial direction;

S2. Process radial annular grooves alternately between the two ends and the middle of the second curved surface;

S3. Closely fitting and welding the first curved surface and the second curved surface to obtain a special-shaped inclined tube, and assembling a plurality of special-shaped inclined tubes to obtain a special-shaped inclined tube type heat roller body;

S4. Assembling: Assemble the heat roll body and other components to obtain a special-shaped inclined tube type heat roll.

The advantages of the present invention are:

(1) For the special-shaped inclined tube type heat roller of the present invention, the processing of the special-shaped inclined tube is completed by a step-by-step process, that is, the first curved surface and the second curved surface are respectively completed first, and then bonded, spliced and welded. The quality requirements of the special-shaped inclined tube Easy to achieve and low processing cost.

(2) For the special-shaped inclined tube type heat roller of the present invention, under the same heat pipe inner surface area, the radial distance of the special-shaped inclined tube can be reduced by about 1/4 compared with the circular tube, which is beneficial to the reduction of the heat roller body. The wall thickness is of great benefit.

(3) In the special-shaped inclined tube type heat roller of the present invention, the heat pipe adopts the external processing method, which can easily carry out surface treatment in the hole, so that the heat pipe hole has a better finish, reduces the resistance of the heat medium liquid backflow, and can reduce The slope of the heat pipe is also an effective way to reduce the wall thickness of the heat roller. The test data shows that at the same speed, the heat pipe designed to overcome the resistance of the heat medium liquid backflow after the inner surface of the heat pipe is smoothed The minimum slope can be reduced from 0.7° to below 0.5°, and the wall thickness can be reduced by at least 1.5mm.

Description of drawings

FIG. 1 is a schematic diagram of a special-shaped inclined tube type heat roller in Example 1. FIG.

Fig. 2 is a partial structural schematic diagram of the special-shaped inclined tube type heat roller of the present invention.

Fig. 3 is a schematic cross-sectional view of a special-shaped inclined tube.

Fig. 4 is a schematic diagram of a special-shaped inclined pipe formed by combining the first curved surface and the second curved surface.

Fig. 5 is a schematic diagram of distribution of inclined tubes in the radial section of the heat roller body.

Fig. 6 is a schematic diagram of the structure of the second curved portion in embodiment 2.

Fig. 7 is a schematic diagram of the structure of the first curved portion in embodiment 2.

Fig. 8 is a schematic diagram of the structure of the second curved portion in embodiment 3.

Fig. 9 is a schematic diagram of the structure of the first curved portion in embodiment 3.

In the figure: special-shaped inclined tube 1, radial annular groove 2, roller body 11, sleeve 13, induction heating mechanism 14, connecting taper sleeve 15, motor shaft 16, connecting seat 17, motor 18, temperature transmitter 19, shaft Seat 20, first curved surface A, second curved surface B.

Detailed ways

The present invention will be further described below in conjunction with specific examples.

Example 1

As shown in Figure 1-2, the special-shaped inclined tube type heat roller includes a roller body 11, and a heat pipe assembly is arranged inside the roller body 11, and a connecting taper sleeve 15 is fixedly connected to the roller body 11, and the connecting taper sleeve 15 A motor shaft 16 is provided, and the motor shaft 16 is connected to the roller body 11 through a connecting taper sleeve 15. A connecting seat 17 is arranged on the motor shaft 16, and an induction heating mechanism 14 is arranged on the connecting seat 17, and one end of the connecting seat 17 is connected to A shaft seat 20 , the shaft seat 20 is connected to the motor 18 , and the motor 18 is connected to the temperature transmitter 19 .

The roller body 11 is made of steel or aluminum alloy. When the roller body 11 is made of aluminum alloy, the inner wall of the roller body 11 is provided with a sleeve 13 .

The most important part of the above structure is the structure of the heat pipe assembly, which directly affects the manufacturing of the heat roller, the heat transfer effect and the temperature uniformity of the system. The temperature of the roller surface is raised, but the method of drilling deep holes is adopted during processing. The disadvantages are also obvious, that is, the processing of many heat pipe holes is difficult, the processing cost is high, and the wall thickness of the heat roller is also increased. The uniform temperature effect of the roller is still obvious, which can meet the production process requirements of chemical fiber spinning.

The advantage of the inclined tube heat roller is that the heating section can be designed to be less than half of the length of the roller body, such as 1/3 of the length. During work, the heat medium liquid will quickly flow back and concentrate on the heating section near the motor end by the action of centrifugal force, far away from the motor. The heat replenishment of the roller body at the end mainly depends on the transfer of heat medium steam through the heat pipe.

Regarding the shape of the heat pipe, since the outward effect of the centrifugal force is to throw the heat medium liquid to the outside of the heat pipe, and the heating source is always in the direction of the inside of the heat pipe, so reducing the radial distance of the heat pipe is also conducive to the improvement of heating and heat transfer efficiency The present invention adopts a special-shaped oblique heat pipe design, and the side close to the heat source is a small-radius arc structure, and the side away from the heat source is a large-radius arc structure, which can reduce the radial heating distance of the heat medium liquid in the special-shaped heat pipe.

The processing method of the present invention can easily realize the processing and production of the inclined pipe, that is, the hypothetical shaped inclined pipe is divided into two parts: the first curved surface A and the second curved surface B, and the first curved surface A and the second curved surface B. Parts can be assembled by bonding to form a complete special-shaped inclined tube 1, and a circular groove with a radius of Ra is processed on the specified position of the second curved surface B, and at the same time, the first curved surface A can not be processed or processed. The circular groove in the corresponding position of the second curved surface B, the first curved surface A and the second curved surface B are pasted and welded, and the processing of the special-shaped inclined tube 1 is completed. This processing method can be called external processing of the heat pipe hole, which is important. On the one hand, due to the external processing method of the heat pipe hole, the surface treatment or smoothness of the inner surface of the heat pipe can be guaranteed.

In the prior art, in order to reduce the wall thickness of the inclined tube heat roller, the gradient heat pipe technology of the heat roller has been designed, such as CN111733468A, CN212335371U, PCT/CN2020/103331, which can reduce the wall thickness of the heat roller; in the past In the deep hole drilling process of the heat pipe, if the deep hole is drilled in one direction and the processing of the gradient heat pipe hole cannot be completed, it is necessary to drill holes with two gradients from both ends, but the treatment at the junction of the two gradients is one Difficult, for the high-speed rotating gradient heat pipe heat roller, if the processing of the gradient oblique hole adopts the method of punching, it is quite difficult, but it can be easily realized by adopting the processing technology outside the heat pipe hole of the present invention; the same method, First make the first curved surface A and the second curved surface B, there are two kinds of the same outer taper and inner taper at the corresponding positions of the first curved surface A and the second curved surface B, and then on the second curved surface B Machining an arc-shaped groove of the designed size on the specified position, and at the same time, do not process or process an arc-shaped groove corresponding to the position of the second curved surface B on the first curved surface A, and finally combine the first curved surface A and The second curved surface B is bonded, assembled and welded to obtain a special-shaped inclined tube.

Example 2

As shown in Figure 3-7, the heat pipe assembly includes a plurality of special-shaped inclined tubes 1 arranged in the axial direction and a radial annular groove 2 connecting the plurality of special-shaped inclined tubes, and the radial section of each of the special-shaped inclined tubes 1 includes The first curved surface A and the second curved surface B of the same axial taper, the axial taper is the slope of the special-shaped inclined pipe 1; the first curved surface A and the second curved surface B are connected to each other to form a special-shaped inclined pipe 1, The radius of the inner surface of the first curved surface A is Rb, and the radius of the outer surface of the second curved surface B corresponding to the first curved surface A is Rb, and the outer surface of the second curved surface B is machined more axially. A channel of radius Ra.

The special-shaped inclined tube is divided into two parts: the second curved surface B in Figure 6 and the first curved surface A in Figure 7, wherein the axial slope of the contact surface between the first curved surface A and the second curved surface B is 0.75 °, a circular groove with a radius of Ra is machined on the specified position of the second curved surface B, wherein the depth of the circular groove can exceed a semicircle. For the convenience of processing, the excess part can be processed into a straight shape. A may not be processed or a circular groove corresponding to the position of the second curved surface B may be processed, and the first curved surface A and the second curved surface B are bonded and welded to complete the processing of the special-shaped inclined pipe 1 .

As shown in Figure 4, for the situation that 1-8 radial annular grooves 2 of special-shaped inclined tubes 1 are required to be distributed, as long as radial annular grooves 2 of specified size are radially processed at the corresponding positions on the outer surface of the second curved surface B, Then assembly and welding can be realized.

The anti-corrosion and surface smooth treatment of the inner surface of the special-shaped inclined tube 1 hole only needs to carry out anti-corrosion and smooth treatment on the processed channel, which belongs to the external treatment method and is easy to do in production.

Compared with the deep hole processing method, the work efficiency is increased by 3 times, and the product qualification rate is increased by 50%. With the same hole tube volume, the wall thickness of the roller body is reduced by 1.5mm.

Example 3

As shown in Figures 3-5 and 8-9, the heat pipe assembly includes a plurality of special-shaped inclined tubes 1 arranged axially and a radial annular groove 2 connecting a plurality of special-shaped inclined tubes, and the radial direction of each of the special-shaped inclined tubes The sections all include the first curved surface A and the second curved surface B with the same axial taper, and the axial taper is the slope of the special-shaped inclined pipe; the first curved surface A and the second curved surface B are connected to each other to form a special-shaped inclined pipe , the inner surface radius of the first curved surface A is Rb, and the outer surface radius of the second curved surface B corresponding to the first curved surface A is Rb, and the outer surface of the second curved surface B is axially machined Multiple channels of radius Ra.

The heat-resistant and non-deformable aluminum alloy A390 is used as the material of the roll body, and the first curved surface A and the second curved surface B are machined first, and the first curved surface A and the second curved surface B have two identical external tapers. and inner taper, wherein the slope of the low-slope section near the motor end is 0.2°, and its length accounts for 1/3 of the total length of the roller body, and the rest is a high-slope section, with a slope of 0.75°, and then on the second curved surface A circular arc-shaped groove of the design size is machined at the specified position on B, as shown in Figure 7. At the same time, no processing is performed on the first curved surface A or an inner circular arc-shaped groove is processed on the corresponding position of the second curved surface B. As shown in FIG. 9 , finally, the gradient heat pipe is obtained by bonding the first curved surface A and the second curved surface B together and welding them.

Similarly, for the case where 1-8 radial annular grooves 2 communicating with heat pipes need to be distributed in the roller body of the special-shaped inclined tube type heat roller, as long as the corresponding position on the outer surface of the second curved surface B is radially processed to a specified size The radial annular groove 2 can be easily realized by assembling and welding, and special hardening and corrosion-resistant treatment should be carried out on the surface of the processed aluminum alloy groove.

Example 4

Manufactured and assembled special-shaped inclined tube type heat roller according to the requirements of Example 2, and assembled according to the requirements of Figure 1, wherein an induction heating mechanism 14 (induction coil) is installed near the motor end, and its length is 1/3 of the length of the roller body , The heat roller rotates at 1000rpm, the set temperature is 120°C, it takes only 5 minutes to reach the set temperature from room temperature, and the temperature of the assembly surface is measured after 4 minutes of equilibrium, and the temperature difference between the four points is ±0.5°C (actual measurement error), uniform roll surface temperature is the most basic feature of the heat pipe heat transfer vapor-liquid equilibrium heat roll, the above-mentioned heat roll is continued to heat up to 175 ° C, and increased to 6000rpm, the present invention shows that the heat pipe effect in the uniform temperature The temperature compensation function under heavy load conditions, the actual measured roll surface temperature deviation is less than 1.0°C.

Example 5

The special-shaped inclined tube type aluminum alloy hot roller processed according to the requirements of embodiment 3, a circle of magnetic conductive sleeve 13 is added to the inner surface of the roller body, which is used for the heat source of the induction heating hot roller, and its length is the same as that of the induction heating mechanism 14 (induction coil ) are equivalent, and all the heat rollers are assembled according to the requirements of Figure 1. The assembled heat rollers rotate at a speed of 1000rpm, and the set temperature is 120°C. It only takes 3 minutes to reach the set temperature from room temperature, and the balance is 4 minutes After measuring the surface temperature of the group, the temperature difference between the four points is ±0.4°C (actual|measurement error); the above-mentioned heat roller continues to heat up to 180°C, and the temperature is increased to 5000rpm, and the present invention shows the average temperature and heat load in the heat pipe effect Compensation temperature function under relatively large conditions, the measured roll surface temperature deviation is less than 1.0°C.

The requirements for slope, heat pipe size, and use of heat medium during the processing and use of the special-shaped inclined tube heat roller of the present invention are all described in Chinese patent CN 105155006B, which also meets the requirements of the present invention. For example, it discloses a high-speed rotating Heat pipe type heat roller and its heat transfer processing method, one end of the heat roller is closed, and the other end is sealed after being punched with many heat pipe holes. The heat pipe holes are oblique holes with a slope of 0.7°-1.2°. , the overall seal; the heating zone is set near the proximal end of the motor and the length is shortened to 30-45% of the length of the roller body. Due to the design of the oblique hole, when running at high speed, the heat medium liquid will flow back to the proximal end of the roller body by centrifugal force The heating section is heated, and the steam generated after heating diffuses to the far end of the roller body to achieve efficient heat transfer. Therefore, it has the advantages of high heat transfer efficiency, small resistance loss, compact structure, reliable operation and low maintenance costs.

Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention without limitation, although the present invention has been described in detail with reference to examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims

A heat pipe assembly, characterized in that: the heat pipe assembly includes a plurality of special-shaped inclined tubes (1) arranged axially and a radial annular groove (2) connecting the plurality of special-shaped inclined tubes, each of the special-shaped inclined tubes The radial sections of (1) all include the first curved surface and the second curved surface of the same axial taper, and the axial taper is the slope of the special-shaped inclined pipe (1), and the first curved surface and the second curved surface are closely spaced. Fitting and welding to obtain a special-shaped inclined pipe (1), the inner surface radius of the first curved surface is Rb, the outer surface radius of the second curved surface corresponding to the position of the first curved surface is Rb, and the second curved surface A plurality of grooves with a radius of Ra are axially processed on the outer surface of the outer surface, and the shape of each groove is a semicircle, an arc less than half a circle, or more than half and less than a quarter of a circle. One of the arc shapes of three circles, the radial annular groove (2) is arranged at the two ends and/or the middle of the outer surface of the second curved surface, the number is 1-8, and the first curved surface and The axial slope of the second curved surface is the same; the axial slope of the contact surface of each of the first curved surface and the second curved surface is 0.5°-2.5°, and each of the first curved surface and the second curved surface The curved surfaces all include a low-slope section and a high-slope section, the slope of the low-slope section is 0-0.5°, the slope of the high-slope section is 0.5°-2.5°, and the slope of the low-slope section is 0-0.5°. The length accounts for 20%-45% of the total length of the special-shaped inclined pipe.
A special-shaped inclined tube heat roller comprising the heat pipe assembly according to claim 1, characterized in that: the heat roller includes a roller body (11), the heat pipe assembly is arranged in the roller body (11), and the roller body ( 11) is fixedly connected with a connecting taper sleeve (15), the motor shaft (16) is arranged on the connecting taper sleeve (15), and the motor shaft (16) is connected to the roller body (11) through the connecting taper sleeve (15), A connection seat (17) is provided on the motor shaft (16), an induction heating mechanism (14) is provided on the connection seat (17), one end of the connection seat (17) is connected to the shaft seat (20), and the shaft seat (20) Connect the motor (18), and the motor (18) is connected to the temperature transmitter (19).
The special-shaped inclined tube type heat roll according to claim 2, characterized in that: the roll body (11) is made of steel material or aluminum alloy material, and when the roll body (11) is made of aluminum alloy material, the roll body (11) The inner wall is provided with a sleeve (13).
A processing method for a special-shaped inclined tube type heat roller according to any one of claims 2-3, characterized in that: comprising the following steps:

S1. Provide a first curved surface and a second curved surface, and process a plurality of grooves with a radius Ra on the outer surface of the second curved surface in the axial direction;

S2. Process radial annular grooves (2) between the two ends and the middle of the second curved surface;

S3. Closely fitting and welding the first curved surface and the second curved surface to obtain a special-shaped inclined tube, and assembling a plurality of special-shaped inclined tubes to obtain a special-shaped inclined tube type heat roller body;

S4. Assembling: Assemble the heat roll body and other components to obtain a special-shaped inclined tube type heat roll.