阅读说明：本技术 一种旋转管材定型牵引装置及其方法 (Rotary pipe shaping and traction device and method thereof ) 是由 冯彦洪 李惠兰 殷小春 于 2020-04-08 设计创作，主要内容包括：本发明公开一种旋转管材定型牵引装置及其方法,涉及管材生产设备领域,该装置包括套设于所述旋转管材上的牵引套,所述牵引套两端分别套设有紧箍装置,所述牵引套外壁上开设有键槽,所述键槽通过键固定连接有旋转轮,所述旋转轮啮合有主动轮,所述主动轮一端通过主动轴连接有电机；所述旋转轮和主动轮均通过轴承设置于传动箱体上,所述牵引套穿过所述旋转轮和所述传动箱体；所述牵引套内壁上均匀设置有摩擦块,所述摩擦块与所述旋转管材的外壁接触。采用本发明提供的旋转管材定型牵引装置的定型牵引方法,实现了管材轴向的螺旋状牵引,提高了牵引效率。(The invention discloses a rotary pipe shaping traction device and a method thereof, and relates to the field of pipe production equipment, wherein the device comprises a traction sleeve sleeved on a rotary pipe, two ends of the traction sleeve are respectively sleeved with a tightening device, the outer wall of the traction sleeve is provided with a key groove, the key groove is fixedly connected with a rotary wheel through a key, the rotary wheel is meshed with a driving wheel, and one end of the driving wheel is connected with a motor through a driving shaft; the rotating wheel and the driving wheel are arranged on the transmission box body through bearings, and the traction sleeve penetrates through the rotating wheel and the transmission box body; the inner wall of the traction sleeve is uniformly provided with friction blocks, and the friction blocks are in contact with the outer wall of the rotary pipe. By adopting the shaping traction method of the rotary pipe shaping traction device provided by the invention, the axial spiral traction of the pipe is realized, and the traction efficiency is improved.)

1. The utility model provides a rotatory tubular product design draw gear which characterized in that: the pipe drawing device comprises a drawing sleeve sleeved on the rotary pipe, wherein two ends of the drawing sleeve are respectively sleeved with a tightening device, the outer wall of the drawing sleeve is provided with a key groove, the key groove is fixedly connected with a rotary wheel through a key, the rotary wheel is meshed with a driving wheel, and one end of the driving wheel is connected with a motor through a driving shaft; the rotating wheel and the driving wheel are arranged on the transmission box body through bearings, and the traction sleeve penetrates through the rotating wheel and the transmission box body; the inner wall of the traction sleeve is uniformly provided with friction blocks, and the friction blocks are in contact with the outer wall of the rotary pipe.

2. The rotating pipe shaping traction device according to claim 1, characterized in that: the cooling device is arranged at one end of the traction sleeve; the cooling device is located including the cover cooling jacket on the rotatory tubular product, the frame is established to the cover on the cooling jacket outer wall, wear to be equipped with the regulating block on the frame, the regulating block with the cooling jacket sets up perpendicularly.

3. The rotating pipe shaping traction device according to claim 2, characterized in that: the cooling sleeve is provided with a spiral flow passage, and the inner surface of the cooling sleeve is sprayed with a coating with low surface energy.

4. The rotating pipe shaping traction device according to claim 1, characterized in that: a plurality of spiral grooves are formed in the inner wall of the traction sleeve, and the friction blocks are embedded in the spiral grooves.

5. The rotating pipe shaping and pulling device as set forth in claim 4, wherein the spiral grooves have an angle α, and the angle α is 45-80 °.

6. The rotating pipe shaping traction device according to claim 1, characterized in that: the height of the friction block is greater than the depth of the spiral groove of the traction sleeve; the friction block is made of wear-resistant materials.

7. The rotating pipe shaping traction device according to claim 6, characterized in that: the friction block is made of a mixed material of rubber and steel wires or rubber and nylon wires.

8. The rotating pipe shaping traction device according to claim 1, characterized in that: the rotating wheel and the driving wheel are a pair of bevel gears with opposite rotating directions, wherein the tooth-shaped rotating direction of the rotating wheel is the same as the rotating direction of the rotating pipe.

9. The rotating pipe shaping traction device according to claim 1, characterized in that: the rotating wheel and the driving wheel are a pair of bevel gears, wherein the tooth form of the rotating wheel points to the extrusion direction of the rotating pipe.

10. A rotary pipe shaping and drawing method is characterized in that: the method comprises the following steps:

adjusting a cooling sleeve through an adjusting block to enable the cooling sleeve to be coaxial with an outlet of a neck mold of a winding forming machine; rotating the pipe material into a shaping device, and primarily shaping in a cooling jacket;

step two, the rotary pipe enters the traction sleeve and is in contact with the friction block; starting a motor, and rotating the traction sleeve to rotationally pull the rotary pipe; the traction sleeve makes synchronous and same-direction rotary motion with the rotary pipe, the friction blocks spirally arranged on the traction sleeve apply component force and axial component force which can be decomposed into annular component force and axial component force on the spiral pipe, and the axial component force drives the rotary pipe to make axial motion;

and step three, applying and adjusting pre-tightening force to the rotary pipe through the tightening device, and adjusting the traction force by the spiral angle of the friction block.

Technical Field

The invention relates to the technical field of pipe production equipment, in particular to a rotary pipe shaping traction device and a method thereof.

Background

The winding forming equipment can process pre-produced plastic sheets/plates, manufacture pipes through the processes of winding, bonding, embedding steel, coating glue and the like, then unload the pipes from the rack, and draw out the core mold to obtain pipe products. In addition, the active drive pulse deformation forming equipment for the ultrahigh molecular weight polymer pipe can utilize an extruder main machine to plasticize and extrude polymer raw materials, perform the polymer raw materials into sheets, send the sheets into a pipe forming auxiliary machine to be wound and formed into the pipe, and the pipe product is produced while rotating. The winding forming can obtain the composite material with excellent performance, can process the material with high viscosity, and fully utilizes the excellent performance of the material.

Conventional winding forming is a non-continuous extrusion production without a traction device. The traditional ultrahigh molecular weight polymer molding equipment has low extrusion speed and does not need special traction and cooling. The existing winding forming method and device for the ultra-high molecular weight polymer pipe can extrude the pipe with high efficiency, the pipe is extruded while rotating in the production process, and if a traction device is not arranged, the produced pipe finished product can only be pushed out by winding forming equipment, so that the load borne by a forming machine can be increased. The conventional pipe tractor can only carry out traction along the axial direction of a pipeline and cannot carry out spiral traction.

Disclosure of Invention

The invention aims to provide a rotary pipe shaping traction device and a method thereof, which are used for solving the problems in the prior art, realizing axial spiral traction of a pipe and improving the traction efficiency.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a rotary pipe shaping traction device which comprises a traction sleeve sleeved on a rotary pipe, wherein two ends of the traction sleeve are respectively sleeved with a tightening device; the rotating wheel and the driving wheel are arranged on the transmission box body through bearings, and the traction sleeve penetrates through the rotating wheel and the transmission box body; the inner wall of the traction sleeve is uniformly provided with friction blocks, and the friction blocks are in contact with the outer wall of the rotary pipe.

Optionally, the traction device further comprises a cooling device arranged at one end of the traction sleeve; the cooling device is located including the cover cooling jacket on the rotatory tubular product, the frame is established to the cover on the cooling jacket outer wall, wear to be equipped with the regulating block on the frame, the regulating block with the cooling jacket sets up perpendicularly.

Optionally, the cooling sleeve is provided with a spiral flow channel, and a coating with low surface energy is sprayed on the inner surface of the cooling sleeve.

Optionally, a plurality of spiral grooves are formed in the inner wall of the traction sleeve, and the friction block is embedded in the spiral grooves.

Optionally, the spiral groove has an angle α, and the angle α is 45-80 degrees.

Optionally, the height of the friction block is greater than the depth of the spiral groove of the traction sleeve; the friction block is made of wear-resistant materials.

Optionally, the friction block is made of a mixed material of rubber and steel wires or rubber and nylon wires.

Optionally, the rotating wheel and the driving wheel are a pair of bevel gears with opposite rotating directions, wherein the tooth-shaped rotating direction of the rotating wheel is the same as the rotating direction of the rotating pipe.

Optionally, the rotating wheel and the driving wheel are a pair of bevel gears, wherein the tooth form of the rotating wheel points to the extrusion direction of the rotating pipe.

The invention also provides a rotary pipe shaping and traction method, which comprises the following steps:

adjusting a cooling sleeve through an adjusting block to enable the cooling sleeve to be coaxial with an outlet of a neck mold of a winding forming machine; rotating the pipe material into a shaping device, and primarily shaping in a cooling jacket;

step two, the rotary pipe enters the traction sleeve and is in contact with the friction block; starting a motor, and rotating the traction sleeve to rotationally pull the rotary pipe; the traction sleeve makes synchronous and same-direction rotary motion with the rotary pipe, the friction blocks spirally arranged on the traction sleeve apply component force and axial component force which can be decomposed into annular component force and axial component force on the spiral pipe, and the axial component force drives the rotary pipe to make axial motion;

and step three, applying and adjusting pre-tightening force to the rotary pipe through the tightening device, and adjusting the traction force by the spiral angle of the friction block.

Compared with the prior art, the invention has the following technical effects:

the coaxiality of the sizing sleeve and the extruded pipe is adjusted through the adjusting block, so that the production stability of winding forming equipment is ensured, and the pipe with uniform thickness is obtained. The temperature control box is used for controlling the water temperature, so that the performance of the pipe product, especially the pipe product with ultrahigh molecular weight, can be adjusted, and the pipe with small internal stress and stable later-stage size can be obtained. The traction sleeve rotates synchronously in the same direction as the pipe; the friction blocks spirally arranged on the traction sleeve apply a component force which can be decomposed into an annular component force and an axial component force on the pipe, and the axial component force drives the pipe to move axially. The friction blocks are used for clamping the pipe to realize traction, so that the phenomenon of slipping of the traction of the pipe is avoided, and the extrusion speed of the pipe of the winding forming machine is matched with the traction speed of the pipe, so that the quality of the pipe is improved. The extrusion load of the winding forming equipment is reduced, and the stability of the extrusion of the pipe is favorably realized. The size of the two end parts of the rotary traction device can be adjusted by the tightening device to adjust the pretightening force, so that the traction force is changed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a top view of a rotating pipe sizing tractor according to the present invention;

FIG. 2 is a schematic cross-sectional view of a cooling jacket of the rotary pipe shaping traction apparatus of the present invention;

FIG. 3 is a schematic cross-sectional view of a traction sleeve of the rotary pipe shaping traction device of the present invention;

FIG. 4 is a schematic power transmission diagram of the rotating pipe shaping traction device of the present invention during operation;

wherein, 1 is a rotary pipe, 2 is a cooling jacket, 3 is a machine base, 4 is an adjusting block, 5 is a traction jacket, 6 is a rotary wheel, 7 is a tightening device, 8 is a friction block, 9 is a key, 10 is a driving wheel, 11 is a driving shaft, 12 is a transmission box body, 13 is a bearing, 14 is a bearing cover, and 15 is a motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a rotary pipe shaping traction device and a method thereof, which are used for solving the problems in the prior art, realizing axial spiral traction of a pipe and improving the traction efficiency.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The invention provides a rotary pipe shaping traction device and a method thereof; as shown in fig. 1-4, the device is installed in front of the pipe outlet of a rotary pipe 1 extruded by a winding forming device, and comprises a cooling jacket 2, a machine base 3, an adjusting block 4, a traction jacket 5, a rotary wheel 6, a tightening device 7, a friction block 8, a key 9, a driving wheel 10, a driving shaft 11, a transmission box body 12, a bearing 13, a bearing cover 14, a motor 15, a water pump and a temperature control system thereof, and a master control system. Wherein the directions of arrows in fig. 1 are the rotating direction and the extruding direction of the rotating pipe 1, and the rotating direction of the motor, respectively.

Referring to fig. 2, the radial position of a cooling jacket 2 is adjusted through an adjusting block 4 arranged on a base 3, so that the cooling jacket is coaxial with an outlet of a mouth mold of a winding forming machine, a rotating pipe 1 enters a forming device, and is initially formed in the cooling jacket 2 with a temperature controlled by a spraying system to obtain a pipe with a surface melt cooled to a certain strength, a PTFE coating with low surface energy is sprayed inside the cooling jacket 2, so that the problem of product size deviation caused by serious surface abrasion due to high-speed friction of the cooling jacket 2 and materials is solved, a spiral groove is formed inside a traction jacket 5, a friction block 8 is embedded in the spiral groove, a tightening device 7 clamps the traction jacket 5 to enable the friction block 8 to be tightly attached to the rotating pipe 1, so that traction is stable, the traction jacket 5 can obtain required pre-tightening force through the tightening devices 7 at two ends, the spiral angle α of the spiral groove is 60 degrees to ensure that axial power is larger than tangential power, so that traction of the pipe is facilitated, the traction jacket 5 adopts a combination mode of a plurality of claw discs, the friction block 8 is a rubber and steel wire or a rubber and nylon wire mixed claw material is tightly attached through the tightening device, so that effective force transmission.

The traction sleeve 5 is driven by a rotating wheel 6, and the traction sleeve 5 is connected with the rotating wheel 6 through a key 9. The drive system comprises a rotating wheel 6, a driving wheel 10, a driving shaft 11 and a motor 15 for driving the driving wheel 10. The driving wheel 10 is meshed with the rotating wheel 6, a key groove is formed in the traction sleeve 5, and the traction sleeve 5 is connected with the rotating wheel 6 through a key 9 to realize the rotating motion of the traction sleeve 5.

Further preferably, the present invention uses a pair of bevel gears to transmit power, wherein the rotation direction of the tooth form of the rotating wheel 6 is the same as the rotation direction of the rotating pipe 1, and the tooth form of the driving wheel 10 is opposite. The rotating wheel 6 makes synchronous rotation movement in the same direction as the rotating pipe 1, the friction blocks 8 spirally arranged on the traction sleeve 5 apply component force and axial component force which can be decomposed into annular component force and axial component force on the rotating pipe 1, and the axial component force drives the rotating pipe 1 to make axial movement. The rotating wheel 6 and the driving wheel 10 are supported and mounted in a transmission case 12 by a shaft and a bearing 13, and bearing covers 14 connected with the bearing 13 are arranged at both ends of the transmission case 12 to reduce production danger and damage of the external environment to the driving system. The rotating wheel 6 and the driving wheel 10 can bear backward axial force, and the selected bearing set can bear larger radial force and axial force at the same time.

When the device works, the sizing device is used for cooling the outside of the molten pipe blank to obtain a pipe with certain strength, and the pipe is driven to move forwards by the rotary traction device. The sizing device is provided with an adjusting block for adjusting the sizing sleeve to be coaxial with the extruded pipe so as to ensure the production stability of the winding forming equipment. The rotary traction device is internally provided with a traction sleeve 5, wherein a spiral groove is formed in the traction sleeve 5, and a friction block 8 is embedded in the spiral groove. The outside of the traction sleeve 5 is clamped by a tightening device 7, so that the friction block 8 is tightly attached to the pipe, and the traction stability is ensured. The traction sleeve 5 rotates synchronously in the same direction as the pipe, the friction blocks 8 spirally arranged on the traction sleeve 5 apply component force and axial component force which can be decomposed into annular component force and axial component force on the pipe, and the axial component force drives the pipe to move axially. Wherein, the two ends of the traction sleeve are adjusted by the tightening device to obtain the required pretightening force. The sizing and traction functions of the pipe rotating extrusion process are realized, so that the pipe winding forming extrusion process is completed more stably and efficiently.

The cooling sleeve device is provided with a spiral flow passage to realize the rapid cooling of the pipe, which is beneficial to the subsequent traction of the pipe and simultaneously avoids the cooling medium from flowing into the traction device. The inner surface of the cooling jacket is sprayed with a coating with low surface energy or subjected to surface heat treatment so as to reduce the friction and wear of materials to parts and prolong the service life of the cooling jacket.

The spiral groove formed in the traction sleeve has a certain angle α to ensure that the axial power is greater than the tangential power, so that the traction of the pipe is facilitated.

The transmission device adopted by the invention can also be a combination of a worm and a worm wheel, wherein the worm wheel is a rotating wheel, the worm is a driving source, and the tooth-shaped rotating direction of the worm wheel is the same as the rotating direction of the wound pipe. The shaping device matched with the rotary pipe further comprises a water pump and a temperature control box. The water circulation in the loop of the cooling jacket 2 is powered by an external water pump, so that the initial cooling and shaping of the pipe are realized, and the subsequent stable traction is facilitated. The temperature control box can control the temperature of the cooling jacket through heating or refrigeration so as to adjust the optimal process and obtain the pipe with stable extrusion and good product performance. The shaping and traction forming device matched with the rotary pipe further comprises a controller, and the water pump, the temperature control box, the driving wheel and the motor are connected with the controller. The controller controls the rotating speed of the traction sleeve according to different pipe extrusion speeds.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.