Engineering plastic pipe machining device

Abstract

The invention discloses an engineering plastic pipe machining device which comprises a positioning mechanism, a rolling mechanism and a power mechanism. The positioning mechanism comprises a limiting sleeve, a plurality of heating rods and an internal thread shaft sleeve; the power mechanism comprises a motor and a transmission shaft, a driving gear, a first threaded section and a smooth section are arranged on the surface of the transmission shaft, and the first threaded section is meshed with the internal threaded shaft sleeve; the rolling mechanism comprises a rotating sleeve, a plurality of threaded rollers and a synchronous gear, the threaded rollers are rotationally arranged on the end face of one side of the rotating sleeve, a synchronous wheel meshed with the synchronous gear is arranged at one end of each threaded roller, and a gear ring is arranged in one side of the rotating sleeve; the transmission roller comprises a straight section and a conical section, and the straight section is meshed with the gear ring. While threads are formed at the end part of the pipeline, the strength of the end part is enhanced, and the reliability of the threaded connection part at the end part of the pipe is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of plastic pipe processing, in particular to an engineering plastic pipe processing device. Background Art

[0002] Engineering plastic pipes are high-performance pipes made of materials such as polyamide, polyoxymethylene and polycarbonate. Compared with ordinary plastic pipes and metal pipes, they have better performance in chemical corrosion resistance, mechanical properties and sanitary properties. They are widely used in industry, medical care, food, electronics and electrical appliances and other fields.

[0003] In the actual application of engineering plastic pipes, it is often necessary to connect the pipes. Conventional connection methods include threaded connection, socket connection, etc. When connecting engineering plastic pipes with threaded connection, the end face of the pipe needs to be threaded. However, in the production process, engineering plastic pipes are directly cut and segmented after basic cooling, and the thread processing of the pipes is not taken into consideration. Therefore, some engineering plastic pipes need to be threaded on the end face of the pipe in actual application.

[0004] Existing pipe threading methods are mostly destructive, using a rotating die cutter to cut the outer wall of the pipe to form the threads. This method not only generates debris, impacting the construction environment, but also reduces the thickness of the pipe wall and disrupts the shape of the pipe material, easily forming hidden cracks or gaps within the threads. This severely impacts the strength of the threaded sections, causing subsequent connections of engineering plastic pipes to become weak points. External forces can easily cause the pipe at these connections to break, leading to leaks in the piping system.

[0005] Secondly, when processing the outer wall of the pipe with a die cutter, multiple die cutters are usually selected. However, if there is an error between the multiple die cutters, the thread will be confused, resulting in the pipe end thread unable to engage normally with the thread of the connector, affecting the implementation of the pipe connection. Summary of the Invention

[0006] The object of the present invention is to provide an engineering plastic pipe processing device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: an engineering plastic pipe processing device, comprising a positioning mechanism, a rolling mechanism and a power mechanism;

[0008] The positioning mechanism includes a limiting sleeve, a plurality of heating rods and an internally threaded sleeve, wherein the heating rods are inserted into the limiting sleeve, and the internally threaded sleeve is located at the inner axis of the limiting sleeve;

[0009] The power mechanism includes a motor and a transmission shaft, the transmission shaft is connected to the power output end of the motor, and a driving gear, a first threaded section and a smooth section are provided on the surface of the transmission shaft, the first threaded section is engaged with the internally threaded sleeve, and the first threaded section is located between the smooth section and the driving gear;

[0010] The rolling mechanism includes a rotating sleeve, a plurality of threaded rollers and a synchronous gear. The threaded rollers are rotatably arranged on one end surface of the rotating sleeve, and the synchronous gear is located inside the rotating sleeve. One end of each threaded roller is provided with a synchronous wheel that meshes with the synchronous gear, and a gear ring is provided inside one side of the rotating sleeve.

[0011] The transmission roller includes a straight section and a tapered section. The straight section is meshed with the gear ring, and the meshing end surface of the tapered section and the driving gear is distributed in parallel.

[0012] Preferably, the positioning mechanism further includes a rolling bearing, and the rolling bearing is located between the limiting sleeve and the rotating sleeve.

[0013] Preferably, a linear bearing is sleeved on one end of the transmission shaft away from the motor, and the outer wall of the linear bearing is in sliding contact with the inner wall of the limiting sleeve;

[0014] A spring is sleeved on the outer wall of one end of the transmission shaft, and the spring is located between the linear bearing and the internal threaded sleeve.

[0015] Preferably, the length of the threaded roller is smaller than the length of the limiting sleeve.

[0016] Preferably, the outer wall diameter of the first threaded section is larger than the outer wall diameter of the transmission shaft.

[0017] Preferably, the length of the first thread segment is greater than the length of the internally threaded sleeve;

[0018] The width of the internal threaded sleeve, the lengths of the smooth section and the straight section are the same.

[0019] Preferably, it further comprises a fixing mechanism, wherein the fixing mechanism comprises a plurality of clamping rods, a plurality of washers, a nut and a fixing plate;

[0020] The fixing plate is sleeved on the outside of the transmission shaft, and the clamping rods are fixed to one side surface of the fixing plate;

[0021] The nut is sleeved on the outside of the plurality of clamping rods, and the outer wall of the clamping rod is provided with a second threaded section engaged with the nut, and the inner wall of the nut is tapered;

[0022] The gaskets are all located on the inner wall of the clamping rod.

[0023] Preferably, a blocking piece is provided at one end of each gasket, and the blocking piece is distributed in parallel with the end surface of the limiting sleeve.

[0024] Preferably, a plurality of limiting holes are provided on the surface of the fixing plate.

[0025] Preferably, the positioning mechanism further comprises a plurality of limiting rods, and the limiting rods are connected to the surface of the limiting sleeve;

[0026] The limiting rods are all slidably inserted into the limiting holes.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention achieves the effect of forming threads in a non-destructive manner by providing a positioning mechanism and a rolling mechanism. The limiting sleeve is inserted into the interior of the tube body to support the inner wall of the tank. The heating rod generates heat and conducts it to the tube body to soften the tube body. The thread roller continuously rotates along the surface of the tube and can be rolled along the surface of the tube body to form threads. The threads are formed by only changing the shape of the tube surface, eliminating the negative effects of destructive thread processing methods.

[0029] 2. The present invention achieves the effect of synchronizing the rotation of multiple thread rollers by providing a synchronous wheel and a synchronous gear. During the thread rolling process, the thread roller rotates along the surface of the pipe while the thread roller engages with the formed thread through the formed thread to produce rotation, which can offset the axial displacement of the pipe body or equipment; secondly, during the rotation of the thread roller, the mutual engagement between the synchronous wheel and the synchronous gear can adjust the rotation of the multiple thread rollers to be consistent, keeping the multiple thread rollers at the same rotation frequency for thread rolling operations, so that the threads formed by the multiple thread rollers are coordinated and consistent, avoiding the problem of thread confusion and ensuring the thread processing effect.

[0030] 3. The present invention achieves the effect of increasing the thickness of the pipe wall at the threaded processing part by pushing the positioning mechanism to move through the power mechanism. The transmission shaft is engaged with the internal threaded sleeve through the first threaded section. When the transmission shaft rotates, the limiting sleeve can be pushed to move toward the pipe body, squeezing the softened pipe body. The softened pipe body can expand radially and fit the surface of the thread roller. The thread is formed by the rotation of the thread roller, thereby increasing the outer wall diameter of the threaded section of the pipe body and effectively improving the strength of the threaded section of the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the appearance structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the exploded structure of the axial component of the present invention;

[0033] Figure 3It is a schematic cross-sectional view of the positioning mechanism and the rolling mechanism of the present invention;

[0034] Figure 4 This is a schematic diagram of the exploded structure of the axial components of the positioning mechanism of the present invention;

[0035] Figure 5 It is a schematic diagram of the main cross-sectional structure of the positioning mechanism and the rolling mechanism of the present invention;

[0036] Figure 6 This is a schematic diagram of the appearance of the power mechanism of the present invention;

[0037] Figure 7 This is a schematic diagram of the main structure of the transmission shaft of the present invention;

[0038] Figure 8 It is a schematic diagram of a partial main cross-sectional structure of the rolling mechanism of the present invention;

[0039] Figure 9 It is a cross-sectional structural diagram of the rolling mechanism of the present invention;

[0040] Figure 10 This is a schematic diagram of the partial appearance structure of the clamping rod of the present invention;

[0041] Figure 11 It is a schematic diagram of a partial main cross-sectional structure of the fixing mechanism of the present invention;

[0042] Figure 12 It is a schematic diagram of the partial cross-sectional structure of the tube body of the present invention.

[0043] In the picture:

[0044] 100, positioning mechanism; 110, limiting sleeve; 120, heating rod; 130, rolling bearing; 140, limiting rod; 150, internal threaded sleeve;

[0045] 200, rolling mechanism; 210, rotating sleeve; 211, ring gear; 220, threaded roller; 221, synchronous wheel; 230, synchronous gear;

[0046] 300, power mechanism; 310, motor; 320, transmission shaft; 321, driving gear; 322, linear bearing; 323, spring; 324, first threaded segment; 325, smooth segment;

[0047] 400, transmission roller; 401, straight section; 402, tapered section;

[0048] 500, fixing mechanism; 510, clamping rod; 511, second threaded section; 520, gasket; 521, blocking piece; 530, nut; 540, fixing plate; 541, limiting hole;

[0049] 600, pipe body; 601, straight pipe section; 602, flange; 603, threaded surface. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] See also Figures 1 to 12 , the present invention provides the following two embodiments:

[0052] Example 1:

[0053] See also Figures 1 to 9 A device for processing engineering plastic pipes includes a positioning mechanism 100, a rolling mechanism 200, and a power mechanism 300. The positioning mechanism 100 supports the inner wall of the pipe body 600, maintaining the stability of the pipe body 600 during rolling of the threads. The power mechanism 300 propels the positioning mechanism 100 axially along the pipe body 600, cooperating with the positioning mechanism 100 to heat the pipe body 600, shortening the softened portion of the pipe body 600 and thereby increasing the pipe wall thickness. The rolling mechanism 200 rotates along the softened surface of the pipe body 600, rolling and forming the threads.

[0054] See also Figures 3 to 5 The positioning mechanism 100 includes a limiting sleeve 110, a plurality of heating rods 120 and an internally threaded sleeve 150. The heating rods 120 are inserted into the limiting sleeve 110, and the internally threaded sleeve 150 is located at the inner axis of the limiting sleeve 110.

[0055] Specifically, there are three heating rods 120, which are evenly inserted into the interior of the limiting sleeve 110, and the outer wall of the heating rod 120 is tightly fitted with the interior of the limiting sleeve 110; the heating rod 120 is an electric heating rod, which generates heat when powered on and conducts the heat to the surface of the limiting sleeve 110, so that after the limiting sleeve 110 is inserted into the interior of the tube body 600, the heat of the limiting sleeve 110 can be conducted to the tube body 600, so that the end of the tube body 600 is softened by the heat.

[0056] The internally threaded sleeve 150 is used to engage with the first threaded section 324 to drive the limiting sleeve 110 to move along the axis of the tube body 600 , thereby squeezing the tube body 600 .

[0057] See also Figures 3 to 7The power mechanism 300 includes a motor 310 and a transmission shaft 320. The transmission shaft 320 is connected to the power output end of the motor 310. The surface of the transmission shaft 320 is provided with a driving gear 321, a first threaded section 324 and a smooth section 325. The first threaded section 324 is engaged with the internally threaded sleeve 150. The first threaded section 324 is located between the smooth section 325 and the driving gear 321.

[0058] It is worth noting that see Figure 7 The outer diameter of the first threaded section 324 is larger than the outer diameter of the transmission shaft 320. When the first threaded section 324 is disengaged from the inner thread of the internally threaded sleeve 150, the internally threaded sleeve 150 can be located within the smooth section 325 of the transmission shaft 320, thereby severing the transmission relationship between the transmission shaft 320 and the limiting sleeve 110.

[0059] The length of the first thread segment 324 is greater than that of the internal thread sleeve 150. In practice, first thread segments 324 of different lengths can be selected to control the moving path length of the positioning mechanism 100, thereby controlling the distance of the tube 600 being squeezed.

[0060] See also Figure 6 , further comprising a fixing mechanism 500, the fixing mechanism 500 comprising a fixing plate 540, the fixing plate 540 being sleeved on the outside of the transmission shaft 320, and having a plurality of limiting holes 541 formed on the surface of the fixing plate 540. The fixing plate 540 is used to provide a mounting support surface for the motor 310.

[0061] See also Figure 3 and Figure 4 The positioning mechanism 100 further includes a plurality of limiting rods 140 connected to the surface of the limiting sleeve 110. The limiting rods 140 are slidably inserted into the limiting holes 541. The limiting rods 140 cooperate with the limiting holes 541 to limit the limiting sleeve 110 along the radial direction of the transmission shaft 320, preventing the limiting sleeve 110 from rotating synchronously with the transmission shaft 320.

[0062] When the transmission shaft 320 rotates, the first threaded section 324 engages with the internal threaded sleeve 150, and cooperates with the limiting rod 140 to slide and insert into the limiting hole 541, thereby playing a limiting role. When the transmission shaft 320 rotates, the first threaded section 324 can drive the internal threaded sleeve 150 to generate axial displacement of the transmission shaft 320, and the internal threaded sleeve 150 drives the positioning mechanism 100 to move as a whole.

[0063] In summary, the heat generated by the heating rod 120 softens the pipe, and the power mechanism 300 drives the positioning mechanism 100 to move through the transmission shaft 320, so that the softened pipe body 600 can be squeezed. While keeping the inner wall diameter of the pipe body 600 unchanged, the pipe wall thickness is increased in disguise through extrusion, and the softened pipe wall is adhered to the surface of the thread roller 220, which is convenient for subsequent rolling of threads.

[0064] See also Figures 5 to 7 One end of the transmission shaft 320 away from the motor 310 is sleeved with a linear bearing 322 , and the outer wall of the linear bearing 322 is in sliding contact with the inner wall of the limiting sleeve 110 .

[0065] Specifically, the linear bearing 322 is used to provide sliding support for the inner wall of the limit sleeve 110. After the internal threaded sleeve 150 moves to the smooth section 325, the limit sleeve 110 can still maintain the shape of the axis coinciding with the axis of the transmission shaft 320 under the support of the linear bearing 322, thereby preventing the position of the limit sleeve 110 from deviating and affecting the quality and accuracy of the thread processing.

[0066] See also Figure 5 and Figure 7 A spring 323 is sleeved on the outer wall of one end of the transmission shaft 320 , and the spring 323 is located between the linear bearing 322 and the internal threaded sleeve 150 .

[0067] Specifically, when the internal threaded sleeve 150 is located at the smooth section 325 of the transmission shaft 320, the spring 323 is in a compressed state. When the transmission shaft 320 reverses, the spring 323 can push the limit sleeve 110 to move through elastic force, so that the internal threaded sleeve 150 can smoothly engage with the first threaded section 324, and through the reverse rotation of the transmission shaft 320, the limit sleeve 110 is driven in reverse to reset, preparing for the subsequent thread processing of the tube body 600.

[0068] See also Figure 3 、 Figure 5 、 Figure 8 and Figure 9 The rolling mechanism 200 includes a rotating sleeve 210 , a plurality of threaded rollers 220 and a synchronous gear 230 .

[0069] The thread roller 220 is rotatably arranged on one end surface of the rotating sleeve 210, and the synchronous gear 230 is located inside the rotating sleeve 210. A synchronous wheel 221 meshing with the synchronous gear 230 is provided at one end of the thread roller 220, and a gear ring 211 is provided inside one side of the rotating sleeve 210.

[0070] The length of the threaded roller 220 is shorter than that of the limiting sleeve 110 , so as to reserve a distance for the tube body 600 to be shortened after being heated and extruded.

[0071] See also Figure 4 The transmission roller 400 includes a straight section 401 and a tapered section 402 . The straight section 401 is meshed with the gear ring 211 , and the meshing end surface of the tapered section 402 and the driving gear 321 is parallel to each other.

[0072] The positioning mechanism 100 further includes a rolling bearing 130 , which is located between the limiting sleeve 110 and the rotating sleeve 210 .

[0073] The rolling bearing 130 is used to ensure smooth rotation between the rolling mechanism 200 and the positioning mechanism 100 and reduce mechanical wear and noise.

[0074] During actual use, the tube body 600 is inserted into the surface of the limiting sleeve 110. When the heating rod 120 is energized, heat is generated and the heat is conducted to the tube body 600 through the limiting sleeve 110, so that the tube body 600 is softened by the heat.

[0075] The transmission shaft 320 rotates, and through the meshing action of the first threaded section 324 and the internally threaded sleeve 150, the circumferential motion of the transmission shaft 320 is converted into the linear motion of the limiting sleeve 110, so that the limiting sleeve 110 moves along the direction of the transmission shaft 320, squeezing the tube body 600, so that the heat-softened tube body 600 is deformed after being squeezed. While keeping the inner wall diameter of the tube body 600 unchanged, the thickness of the softened part of the squeezed tube body 600 increases, and the squeezed and expanded part contacts the thread roller 220, and a thread groove is initially formed.

[0076] When the limiting sleeve 110 has finished squeezing the tube 600, the internally threaded sleeve 150 moves from the first threaded section 324 to the smooth section 325. Since the width of the internally threaded sleeve 150, the length of the smooth section 325, and the length of the straight section 401 are the same, the moving length of the transmission roller 400 is the same as that of the limiting sleeve 110. That is, the driving gear 321 meshes with the tapered section 402 of the transmission roller 400, and the power of the power mechanism 300 is output to the rolling mechanism 200 through the transmission roller 400.

[0077] When the driving gear 321 is engaged with the tapered section 402 , the transmission shaft 320 drives the transmission roller 400 to rotate. The transmission roller 400 is engaged with the gear ring 211 through the straight section 401 , driving the entire rolling mechanism 200 to rotate.

[0078] During the rotation of the rolling mechanism 200, since the tube body 600 is softened by heating and expanded by extrusion, the outer wall diameter of the heated part is already larger than the outer wall diameter of the straight tube section 601 of the tube body 600, and the distance between the outer wall of the threaded roller 220 and the outer wall of the limiting sleeve 110 is equal to the tube wall thickness of the straight tube section 601 of the tube body 600, that is, the softened tube wall after expansion. Under the action of the extrusion force, the outer wall is deformed along the surface of the threaded roller 220, and a preliminary thread groove is produced.

[0079] Then the transmission shaft 320 drives the rolling mechanism 200 to rotate, and multiple threaded rollers 220 rotate along the softened tube wall. During the overall rotation of the rolling mechanism 200, the threaded rollers 220 rotate on their own to offset the axial displacement of the tube body 600 caused by the thread engagement, thereby facilitating actual processing operations.

[0080] During the thread forming roll forming process, when multiple thread rollers 220 rotate, the thread rollers 220 synchronize their rotation periods and positions through the meshing relationship between the synchronous wheel 221 and the synchronous gear 230, thereby preventing the problem of chaotic thread forming roll forming caused by asynchronous rotation between the multiple thread rollers 220.

[0081] By synchronizing the rotation of the plurality of thread rollers 220 as described above, the plurality of thread rollers 220 can be rolled so that the thread-shaped protrusions on the surface of the thread roller 220 can accurately enter the thread grooves formed by rolling of other thread rollers 220, thereby forming precise thread grooves.

[0082] See also Figure 12 After continuous rolling by the rolling mechanism 200, a threaded surface 603 is formed on the surface of the tube body 600. During the formation of the threaded surface 603, the thread is formed by rolling with the thread roller 220, and after heating and extrusion by the positioning mechanism 100, the thickness of the tube wall of the threaded portion to be processed is increased while keeping the inner wall of the tube body 600 unchanged, resulting in an outer wall diameter of the threaded surface 603 being larger than the outer wall diameter of the straight tube section 601 of the tube body 600, effectively increasing the strength of the tube body 600 at the threaded surface 603 and enhancing the structural stability of the tube body 600 at the pipeline connection. The connected pipeline system is less likely to be subjected to external force at the connection and cause leakage accidents.

[0083] Example 2:

[0084] Based on the content of the above embodiment 1, another embodiment is proposed:

[0085] See also Figure 1 、 Figure 2 、 Figure 10 and Figure 11 , further comprising a fixing mechanism 500 , which includes a plurality of clamping rods 510 and nuts 530 .

[0086] The clamping rods 510 are all fixed to one side surface of the fixing plate 540, and the nuts 530 are sleeved on the outside of the multiple clamping rods 510. The outer wall of the clamping rods 510 is provided with a second threaded section 511 engaged with the nuts 530, and the inner wall of the nuts 530 is conical.

[0087] During actual use, the clamping rod 510 can be sleeved on the outside of the tube body 600, and by rotating the nut 530, the second threaded section 511 of the clamping rod 510 is squeezed by the rotation of the nut 530, and the inner diameter of the end of the clamping rod 510 is contracted, so that the clamping rod 510 is stably held on the outside of the tube body 600.

[0088] It is worth noting that the fixing mechanism 500 further includes a plurality of gaskets 520 , and the gaskets 520 are all located on the inner wall of the clamping rod 510 .

[0089] The gasket 520 is used to buffer the pressure between the clamping rod 510 and the outer wall of the tube body 600 to prevent the tube body 600 from being deformed or the surface of the tube body 600 from being damaged due to excessive clamping force.

[0090] See also Figure 10 , a baffle 521 is provided at one end of the gasket 520, and the baffle 521 is parallel to the end surface of the limiting sleeve 110

[0091] Before the clamping rod 510 is clamped on the outer wall of the tube body 600 , a certain distance can be left between the blocking piece 521 and the expected thread position by adjusting the position of the gasket 520 .

[0092] As the subsequent fixing mechanism 500 stably clamps the tube body 600, the power mechanism 300 first drives the positioning mechanism 100 to heat and extrude the tube body 600, thereby increasing the wall thickness of the threaded section of the tube body 600, and then transmits power to the rolling mechanism 200 through the transmission roller 400, and forms threads on the threaded section of the tube body 600 through the rolling mechanism 200.

[0093] At this point, the surface of the threaded processing section in contact with the thread roller 220 forms a thread surface 603, and after the limiting sleeve 110 squeezes and softens the tube body 600, the excess tube wall material is squeezed by the thread roller 220 and gathered between the thread surface 603 and the baffle 521 to form a flange 602.

[0094] The formed flange 602 can serve as a reinforcement section between the threaded surface 603 and the straight pipe section 601, increasing the volume of the pipe body 600 material between the threaded surface 603 and the straight pipe section 601, thereby strengthening the strength between the threaded surface 603 and the straight pipe section 601 and solving the problem of a weak point caused by the change in the pipe wall shape between the threaded surface 603 and the straight pipe section 601.

[0095] On the other hand, the flange 602 can isolate the threaded surface 603 from the straight pipe section 601. When connecting the pipe body 600, if the threaded connector is over-screwed, the threads on the inner wall of the connector will cut into the straight pipe section 601 along the threaded surface 603, resulting in unexpected thread grooves on the surface of the straight pipe section 601. The thread grooves destroy the original shape of the surface of the straight pipe section 601, which is an additional surface damage and will directly affect the strength of the pipe body 600.

[0096] The formed flange 602 can isolate the threaded surface 603 and the straight pipe section 601, and limit the screw-in distance of the connector to prevent excessive screwing of the connector from damaging the outer wall of the straight pipe section 601, further ensuring the overall strength and practical application reliability of the pipe body 600.

[0097] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An engineering plastic pipe processing device, characterized by: It comprises a positioning mechanism (100), a rolling mechanism (200) and a power mechanism (300); The positioning mechanism (100) comprises a limiting sleeve (110), a plurality of heating rods (120) and an internally threaded sleeve (150), wherein the heating rods (120) are inserted into the limiting sleeve (110), and the internally threaded sleeve (150) is located at the inner axis of the limiting sleeve (110); The power mechanism (300) comprises a motor (310) and a transmission shaft (320), wherein the transmission shaft (320) is connected to the power output end of the motor (310), and a driving gear (321), a first threaded section (324) and a smooth section (325) are provided on the surface of the transmission shaft (320), wherein the first threaded section (324) is engaged with the internally threaded sleeve (150), and the first threaded section (324) is located between the smooth section (325) and the driving gear (321); The rolling mechanism (200) comprises a rotating sleeve (210), a plurality of threaded rollers (220) and a synchronous gear (230); the threaded rollers (220) are rotatably arranged on one end surface of the rotating sleeve (210), and the synchronous gear (230) is located inside the rotating sleeve (210); one end of each threaded roller (220) is provided with a synchronous wheel (221) meshing with the synchronous gear (230); and a gear ring (211) is provided inside one side of the rotating sleeve (210); The transmission roller (400) comprises a straight section (401) and a tapered section (402), wherein the straight section (401) is meshed with the gear ring (211), and the meshing end faces of the tapered section (402) and the driving gear (321) are distributed in parallel.

2. The engineering plastic pipe processing device according to claim 1, characterized in that: The positioning mechanism (100) further comprises a rolling bearing (130), wherein the rolling bearing (130) is located between the limiting sleeve (110) and the rotating sleeve (210).

3. The engineering plastic pipe processing device according to claim 1, characterized in that: One end of the transmission shaft (320) away from the motor (310) is sleeved with a linear bearing (322), and the outer wall of the linear bearing (322) is in sliding contact with the inner wall of the limiting sleeve (110); A spring (323) is sleeved on the outer wall of one end of the transmission shaft (320), and the spring (323) is located between the linear bearing (322) and the internally threaded sleeve (150).

4. The engineering plastic pipe processing device according to claim 1, characterized in that: The length of the threaded roller (220) is smaller than the length of the limiting sleeve (110).

5. The engineering plastic pipe processing device according to claim 1, characterized in that: The outer wall diameter of the first threaded section (324) is larger than the outer wall diameter of the transmission shaft (320).

6. The engineering plastic pipe processing device according to claim 1, characterized in that: The length of the first threaded section (324) is greater than the length of the internally threaded sleeve (150); The width of the internally threaded sleeve (150), the lengths of the smooth section (325) and the lengths of the straight section (401) are the same.

7. The engineering plastic pipe processing device according to claim 1, characterized in that: Also included is a fixing mechanism (500), wherein the fixing mechanism (500) includes a plurality of clamping rods (510), a plurality of washers (520), a nut (530) and a fixing plate (540); The fixing plate (540) is sleeved on the outside of the transmission shaft (320), and the clamping rods (510) are fixed to a side surface of the fixing plate (540); The nut (530) is sleeved on the outside of the plurality of clamping rods (510), and the outer wall of the clamping rod (510) is provided with a second threaded section (511) engaged with the nut (530), and the inner wall of the nut (530) is conical; The gaskets (520) are all located on the inner wall of the clamping rod (510).

8. The engineering plastic pipe processing device according to claim 7, characterized in that: A blocking piece (521) is provided at one end of each gasket (520), and the blocking piece (521) is distributed in parallel with the end surface of the limiting sleeve (110).

9. The engineering plastic pipe processing device according to claim 7, characterized in that: A plurality of limiting holes (541) are provided on the surface of the fixing plate (540).

10. The engineering plastic pipe processing device according to claim 9, characterized in that: The positioning mechanism (100) further includes a plurality of limiting rods (140), wherein the limiting rods (140) are connected to the surface of the limiting sleeve (110); The limiting rods (140) are all slidably inserted into the limiting holes (541).

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