Pipeline sweat soldering device facilitating quick butt joint

Abstract

The invention discloses a pipeline hot melting welding device convenient for quick butt joint, and belongs to the technical field of pipeline hot melting, the pipeline hot melting welding device comprises a support, the support is provided with two sliding rails, a plurality of locking hoops for locking pipelines are slidably connected between the sliding rails on the two sides, and the locking hoops on the two sides slide along the axes of the sliding rails to enable the two pipelines to be subjected to hot melting to be aligned and contacted. According to the pipeline butt joint device, when butt joint is needed after hot melting, the rotating ring rotates and can drive the pressing block which is pressed before to be separated from the stress block, the connecting binding sleeve can drive the heating block to move towards the inner side in the radial direction through the pulling force of the connecting binding sleeve, the pipelines on the two sides can be in butt joint and close to each other rapidly through inward movement of the heating block, and the heating block does not need to be additionally taken out from the position between the pipelines; and the waiting time is shortened, the interface temperature maintaining capacity at the butt joint moment is improved, heat dissipation caused by waiting for taking out the heating block is reduced, the butt joint temperature of the hot melting connection area is increased, and the rapid butt joint effect is improved.

Description

Technical Field

[0001] This invention belongs to the field of pipeline thermal fusion technology, and particularly relates to a pipeline thermal fusion welding device that facilitates rapid connection. Background Technology

[0002] Pipeline thermofusion welding is a common method specifically used to connect thermoplastic pipes. Its core principle is to use heat to melt the connecting surfaces of the pipe and fittings, then fuse them together under pressure, and after cooling and solidification, form a seamless, strong, and sealed integral connection.

[0003] Chinese invention patent CN115157193B discloses a pipe welding hot melt frame for water conservancy projects, which relates to the technical field of hot melt frame. It includes: a guide plate; two guide plates that are symmetrical to each other; support columns that are fixedly installed at both ends of the bottom of the two guide plates, and casters that are installed at the lower ends of the support columns; and symmetrical bearing plates that are slidably installed at the lower ends of the two guide plates. The above solution clamps and fixes the two pipes on the same horizontal line. During the welding process, the pipes are touched but do not shake, and they automatically connect after being processed by the hot melt machine. This avoids the problem of the pipes shaking during welding, resulting in uneven welding and breakage. However, in actual use, the time spent waiting for the hot melt machine to reset during the connection can easily lead to heat loss and cold welding. Furthermore, the molten material inevitably flares out to both the inside and outside of the pipe, increasing the transport resistance inside the pipe. The narrow contact area between the flared flange and the inner wall of the pipe can also affect the bonding strength, indicating room for improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a pipe hot-melt welding device that facilitates rapid connection, in order to solve the problem that the narrow contact area between the flange and the inner wall of the pipe can easily affect the bonding strength.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pipe hot-melt welding device for easy and rapid connection includes: a support with two slide rails, and a plurality of locking clamps for locking the pipes slidably connected between the two slide rails. The two pipes to be hot-melted are aligned and contacted by sliding the locking clamps along the slide rail axis. The device also includes:

[0007] The hot-melting mechanism includes an adjustable support sleeve that slides inside the pipe. Multiple radially displaceable heating blocks are provided on the outer periphery of the support sleeve. The radially expanding heating blocks are located between the pipe ends on both sides to form a melting zone. The pipe ends on both sides are brought into contact and fused by the contraction of the heating blocks into the support sleeve.

[0008] The closing mechanism is connected to the rear side of the support sleeve. After the heating block contracts, it moves along the pipe axis to make the closing mechanism contact and shape the hot melt gap.

[0009] The limiting component is connected to the rear side of the closing mechanism. The limiting component can be limited and connected inside the pipe. The sliding of the limiting component inside the pipe supports the front closing mechanism and the hot-melt mechanism.

[0010] As a further description of the above technical solution:

[0011] The hot-melting mechanism also includes:

[0012] The inner support ring is coaxially connected to the inner side of the support sleeve.

[0013] The conductive plate and multiple transmission plates are slidably connected to the groove opened on the outer periphery of the inner support ring. The bottom side of the conductive plate is connected to a force-bearing block, which is located on the side of the adjacent pressure block. The top end of the conductive plate passes through the inner support ring and is connected to the bottom side of the heating block.

[0014] A connecting sleeve is attached to the bottom of the heating block. The connecting sleeve is a flexible telescopic terminal. The other end of the connecting sleeve is telescopically connected to the outside of the inner support ring. The outer wall of the inner support ring has a wire groove. The wire bundle led out from the heating block extends from the wire groove to the outside. The connecting sleeve is an elastic sleeve.

[0015] The rotating ring is rotatably connected to the inner cavity of the support sleeve. Multiple pressure blocks for driving the force-bearing block are arranged around the outer periphery of the rotating ring along the axis. The rotation of the rotating ring causes the pressure blocks to squeeze the force-bearing block to move radially.

[0016] As a further description of the above technical solution:

[0017] It also includes: a connecting rod, with rotating blocks rotatably connected to both ends of the connecting rod. One rotating block is connected to the outside of the rotating ring, and the other rotating block is connected to an electric push rod. The electric push rod is connected to the inside of the inner support ring. The rotating blocks and the rotating ring are rotated by the extension of the electric push rod.

[0018] As a further description of the above technical solution:

[0019] It also includes: a traction component, connected to the rear side of the limiting component, which pulls the limiting component to adjust the hot melt position within the pipeline.

[0020] As a further description of the above technical solution:

[0021] The closing mechanism includes: a closing ring connected to the rear side of the support sleeve, the closing ring being opposite to the axis of the support sleeve;

[0022] Multiple pressure rollers are arranged around the outer periphery of the closed ring. The outer periphery of the closed ring has an annular cavity. The multiple pressure rollers are movably connected to the annular cavity on the outer periphery of the closed ring. The pressure rollers extrude and shape the molten area to enhance the joint strength.

[0023] As a further description of the above technical solution:

[0024] It also includes: a movable seat, which is rotatably connected to the outside of the pressure roller, and a third spring is connected to both sides of the bottom of the movable seat, with the other end of the third spring connected to the inside of the annular cavity outside the closed ring;

[0025] Sliding grooves, multiple sliding grooves are arranged around the axis of the closed ring and opened on the inner wall of the annular cavity;

[0026] The control block is slidably connected to the sliding groove via a bottom-connected rod. Moving the control block causes the pressure pipe to move radially to fit the molten joint area of ​​the pipes on both sides.

[0027] A turntable is rotatably connected to a closed ring. A drive component is installed on the rear side of the turntable. A mounting plate is provided on one side of the drive component. The mounting plate is connected to one side of the limiting component.

[0028] Multiple protrusions are connected around the outside of the turntable along the axis of the turntable. The cross-sectional shape of the protrusions is triangular. After the protrusions rotate, the inclined surfaces contact the moving rods to push the pressure rollers to move radially.

[0029] As a further description of the above technical solution:

[0030] The limiting component includes:

[0031] A limiting ring has multiple rollers on its outer periphery, and the limiting ring moves within the pipe via the rollers; a limiting plate has multiple limiting plates arranged in a sliding groove around the axis of the limiting ring, and the limiting plates are configured to be radially slidably connected to the pipe, thereby restricting the movement of the limiting ring through contact between the limiting plates and the inner wall of the pipe.

[0032] Limiting teeth, multiple limiting teeth are arranged circumferentially outside the arc surface of the limiting plate.

[0033] As a further description of the above technical solution:

[0034] It also includes: a fixing block, which is connected to the bottom side of the limiting plate and is slidably connected to a sliding groove on one side of the limiting ring;

[0035] A wedge is connected to one side of a fixed block, and the fixed block moves by the force applied to the inclined surface of the wedge.

[0036] A drive ring is slidably connected to one side of a limiting ring. Multiple brake rods are arranged around one side of the drive ring. The brake rods extend into the limiting ring and drive the fixed block to move radially by pressing the inclined surface of the wedge block.

[0037] As a further description of the above technical solution:

[0038] It also includes: a first spring, sleeved on the brake lever, with its two ends connected to corresponding positions on one side of the drive ring and the limiting ring, respectively;

[0039] A fixed base is connected to the inner side of the drive ring, and the fixed base is configured to be movably connected to one side of the limit ring;

[0040] An electric push rod is connected to both sides of the fixed base. One end of the electric push rod piston rod is connected to the outside of the limiting ring. The electric push rod pushes the drive ring and brake rod to move and drive the limiting plate to contact and limit the inner wall of the pipe.

[0041] As a further description of the above technical solution:

[0042] It also includes: a sliding sleeve, connected to one side of the fixed block, with a sliding rod slidably connected inside the sliding sleeve, and one end of the sliding rod connected to a sliding groove;

[0043] The second spring is sleeved on the outside of the slide rod, and its two ends are respectively connected to the end of the slide rod and one side of the slide sleeve.

[0044] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0045] 1. In this invention, when docking is required after hot melting, the rotating ring can cause the previously compressed block to detach from the force block, and the connecting sleeve can use its own tension to drive the heating block to move radially inward. The inward movement of the heating block can enable the pipes on both sides to quickly dock and approach each other without the need to remove the heating block from between the pipes, shortening the waiting time, improving the ability to maintain the interface temperature at the moment of docking, reducing heat dissipation due to the waiting time of removing the heating block, increasing the docking temperature of the hot melt connection area, and improving the rapid docking effect.

[0046] 2. In this invention, through the designed closed mechanism, when the heating block heats the ends of the pipes on both sides, and when the heating block retracts into the support sleeve for contact welding, the traction component pushes the heat-melting mechanism forward to separate from the heat-melting area. At this time, the closed ring can contact the heat-melting area, and the pressure roller can contact the heat-melting area by moving outward radially. Because the molten material flowing inward from the contact of the heat-melting areas on both sides can contact the outer surface of the pressure roller, the molten material forms an arc-shaped guide part that is rolled and shaped into a spiral in the melting area. The arc-shaped guide part can improve the mutual coupling effect of the pipes on both sides, improve the impact resistance of the joint area, and improve the fluidity of the medium.

[0047] 3. In this invention, when hot fusion is required, the limiting ring can be moved inside the pipe by pushing it. When the limiting ring moves, the friction between it and the inside of the pipe can be reduced by the external rollers. When it moves to the front side of the port of one side of the pipe, the fixed seat can be moved by controlling the electric push rod. The movement of the fixed seat can drive the drive ring to move. When the drive rod moves, the brake rod can move to squeeze the wedge block at the corresponding position. When the wedge block is compressed, it can drive the fixed block to slide outside the slide rod through the sliding sleeve and squeeze the second spring. The movement of the fixed block can drive the limiting plate to move radially and abut against the inner wall of the pipe. The radial movement of the limiting plate can limit the movement of the limiting ring relative to the fusion pipe, which is beneficial to improving the stability of the hot fusion connection. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the overall structure of a pipe hot-melt welding device that facilitates rapid docking, as proposed in this invention.

[0049] Figure 2 This is a partially disassembled structural diagram of a pipe hot-melt welding device for easy and rapid docking proposed in this invention.

[0050] Figure 3 This is a partial half-section diagram of a pipe hot-melt welding device for easy and rapid docking proposed in this invention.

[0051] Figure 4 This is a half-sectional schematic diagram of the hot-melt mechanism of a pipe hot-melt welding device that facilitates rapid docking, as proposed in this invention.

[0052] Figure 5 The present invention proposes Figure 4 Enlarged structural diagram of section A;

[0053] Figure 6 This is a schematic diagram of the disassembled structure of the closed mechanism of a pipe hot-melt welding device for easy and rapid docking proposed in this invention;

[0054] Figure 7 The present invention proposes Figure 6 Enlarged structural diagram of section B;

[0055] Figure 8 This is a schematic diagram of the lateral structure of the pressure roller of a pipe hot-melt welding device that facilitates rapid docking, as proposed in this invention.

[0056] Figure 9 This is a schematic diagram of the pressure roller assembly structure of a pipe hot melt welding device that facilitates rapid docking, as proposed in this invention.

[0057] Figure 10 This is a schematic diagram of the limiting component structure of a pipe hot-melt welding device that facilitates rapid docking, as proposed in this invention.

[0058] Figure 11 This is a half-sectional view of the limiting component of a pipe hot-melt welding device for easy and rapid docking proposed in this invention.

[0059] Figure 12 The present invention proposes Figure 11 Enlarged structural diagram of section C;

[0060] Figure 13 This is a schematic diagram of the traction component assembly structure of a pipe hot-melt welding device that facilitates rapid docking, as proposed in this invention.

[0061] Legend:

[0062] 1. Bracket; 2. Locking clamp; 3. Limiting assembly; 301. Limiting ring; 302. Roller; 303. Limiting plate; 304. Fixing block; 305. Wedge block; 306. Brake lever; 307. Drive ring; 308. First spring; 309. Slide rod; 310. Slide sleeve; 311. Second spring; 312. Fixing seat; 4. Closing mechanism; 401. Closing ring; 402. Mounting plate; 403. Driving component; 404. Moving component 405. Seat; 406. Pressure roller; 407. Third spring; 408. Control block; 409. Moving rod; 410. Protrusion; 5. Turntable; 5. Hot melt mechanism; 501. Support sleeve; 502. Heating block; 503. Connecting sleeve; 504. Inner support ring; 505. Conducting plate; 506. Force-bearing block; 507. Pressure block; 508. Rotating ring; 509. Connecting rod; 510. Rotating block; 511. Electric push rod; 6. Traction component. Detailed Implementation

[0063] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0064] Please see Figures 1-13 This invention provides a technical solution: a pipe hot-melt welding device for easy and rapid connection, comprising: a support 1, the support 1 having two slide rails, and a plurality of locking clamps 2 for locking the pipes slidably connected between the two slide rails, thereby aligning and contacting two pipes to be hot-melted by sliding the two locking clamps 2 along the slide rail axis; wherein, the support 1 is slidably connected to the locking clamps 2 by a guide rod, and a hydraulic cylinder is provided between adjacent locking clamps 2 on both sides, thereby driving the two locking clamps 2 to move closer together to weld the hot-melt pipes;

[0065] The hot-melting mechanism 5 includes an adjustable support sleeve 501 that slides inside the pipe. The outer periphery of the support sleeve 501 is provided with multiple radially displaceable heating blocks 502. The radially expanded heating blocks 502 are located between the ends of the pipes on both sides to form a melting area. The pipe ends on both sides are brought into contact and fused by the contraction of the heating blocks 502 into the support sleeve 501.

[0066] The closing mechanism 4 is connected to the rear side of the support sleeve 501. After the heating block 502 contracts, it moves along the pipe axis to make the closing mechanism 4 contact the hot melt gap for shaping.

[0067] The limiting component 3 is connected to the rear side of the closing mechanism 4. The limiting component 3 is connected to the pipe in a limited manner. The sliding of the limiting component 3 in the pipe supports the front closing mechanism 4 and the hot melt mechanism 5.

[0068] The hot melt mechanism 5 also includes:

[0069] The inner support ring 504 is coaxially connected to the inner side of the support sleeve 501.

[0070] The conductive plate 505 and multiple transmission plates are slidably connected to the groove opened on the outer periphery of the inner support ring 504. The bottom side of the conductive plate 505 is connected to the force block 506, which is located on one side of the adjacent pressure block 507. The top end of the conductive plate 505 passes through the inner support ring 504 and is connected to the bottom side of the heating block 502.

[0071] A connecting sleeve 503 is connected to the bottom of the heating block 502. The connecting sleeve 503 is a flexible telescopic terminal. The other end of the connecting sleeve 503 is telescopically connected to the outside of the inner support ring 504. The outer wall of the inner support ring 504 has a wire groove. The wire harness led out of the heating block 502 extends from the wire groove to the outside. The connecting sleeve 503 is an elastic sleeve.

[0072] A rotating ring 508 is rotatably connected to the inner cavity of the support sleeve 501. Multiple pressure blocks 507 for driving the force-bearing block 506 are arranged around the outer periphery of the rotating ring 508 along the axial direction. The rotation of the rotating ring 508 causes the pressure blocks 507 to squeeze the force-bearing block 506 to move radially.

[0073] It also includes a connecting rod 509, with rotating blocks 510 rotatably connected to both ends of the connecting rod 509. One rotating block 510 is connected to the outside of the rotating ring 508, and the other rotating block 510 is connected to an electric push rod 511. The electric push rod 511 is connected to the inside of the inner support ring 504. The rotating block 510 and the rotating ring 508 are rotated by the working extension of the electric push rod 511.

[0074] It also includes a traction component 6, which is connected to the rear side of the limiting component 3. The traction component 6 pulls the limiting component 3 to move within a long pipe to adjust the hot-melt position. The traction component 6 has a cavity for accommodating the wire harness. The traction component 6 can be used to pull the entire mechanism and fine-tune the hot-melt position when welding long pipes. It also embeds the heating and control wire harness for protection, reducing entanglement and wear, and adapting to the narrow, buried, and in-service confined spaces during hot-melt construction.

[0075] To avoid interface cooling and cold welding issues in the molten layer caused by waiting for the heated components to be removed for docking, specifically: during hot melting, the inner support ring 504 can be connected between the two pipe end faces. When the heating block 502 expands radially outward, it can weld and heat through contact with the pipe end faces on both sides. Furthermore, when docking is required after hot melting, the electric push rod 511 can be extended. The extension of the electric push rod 511 drives the rotating block 510 on one side to push the connecting rod 509, and the other end of the connecting rod 509 is subjected to force. The rotating ring 508 is rotated by another rotating block 510. The rotation of the rotating ring 508 can cause the previously pressed block 507 to disengage from the force block 506. At this time, the connecting sleeve 503 can use its own pulling force to drive the heating block 502 to move radially inward. The inward movement of the heating block 502 can enable the pipes on both sides to quickly connect and approach each other without having to remove the heating block 502 from between the pipes. This helps to reduce the heat dissipation caused by waiting for the heating block 502 to be removed, increase the connection temperature of the heat fusion connection area, and improve the rapid connection effect.

[0076] Both sides of the heating block 502 are beveled to maintain the tight fit of the circumferential arrangement of the heating block 502, thereby improving the uniformity of heating at the end of the pipe. In addition, the areas not covered by the heating block 502 can maintain the fusion effect through heat conduction.

[0077] Furthermore, to avoid uneven heating caused by the seal between the traditional heating plate and the end face, the circumferentially arranged heating blocks 502 can form a high degree of fit with the end face of the tube. The coaxial guide of the inner support ring 504 can be synchronously stressed with the conduction plate 505, ensuring that each heating block 502 has equal radial displacement, making the circumferential heat and pressure distribution more balanced, reducing the difference in weld depth and the amount of misalignment, and improving the consistency of the weld layer structure.

[0078] Meanwhile, the radially movable heating block 502, pressure roller 405, and limiting plate 303 can work with the prefabricated sleeve inside the locking clamp 2 to adapt to the welding of pipes of different diameters. Furthermore, corresponding special tooling can be prefabricated to switch during large-range diameter adjustments to improve melting adaptability.

[0079] The closing mechanism 4 includes: a closing ring 401 connected to the rear side of the support sleeve 501, with the closing ring 401 and the support sleeve 501 having an axis opposite to each other;

[0080] Pressure rollers 405, multiple pressure rollers 405 are arranged around the outer periphery of the closed ring 401. The outer periphery of the closed ring 401 has an annular cavity. Multiple pressure rollers 405 are movably connected to the annular cavity on the outer periphery of the closed ring 401. The pressure rollers 405 extrude and shape the molten area to enhance the joint strength.

[0081] It also includes: a movable seat 404, which is rotatably connected to the outside of the pressure roller 405. A third spring 406 is connected to both sides of the bottom of the movable seat 404. The other end of the third spring 406 is connected to the inside of the outer annular cavity of the closed ring 401.

[0082] Multiple sliding grooves are arranged around the axis of the closed ring 401 and are opened on the inner wall of the annular cavity.

[0083] The control block 407 is slidably connected to the sliding groove via the bottom-connected moving rod 408. The movement of the control block 407 causes the pressure pipe to move radially to fit the molten joint area of ​​the pipes on both sides.

[0084] Turntable 410 is rotatably connected to the closed ring 401. A drive component 403 is installed on the rear side of turntable 410. A mounting plate 402 is provided on one side of drive component 403. The mounting plate 402 is connected to one side of limit component 3.

[0085] Protrusion 409, multiple protrusions 409 are connected around the outside of turntable 410 along the axis of turntable 410. The cross-sectional shape of protrusion 409 is triangular. After the protrusion 409 rotates, the inclined surface contacts the moving rod 408 to push the pressure roller 405 to move radially.

[0086] Specifically: Through the designed closing mechanism 4, after the heating block 502 heat-melts the ends of the pipes on both sides, when the heating block 502 retracts into the support sleeve 501 for contact welding, the traction member 6 can push the heat-melting mechanism 5 forward to separate from the heat-melting area. At this time, the closing ring 401 can contact the heat-melting area. By controlling the drive member 403 to drive the turntable 410 to rotate, the rotation of the turntable 410 can drive the external protrusion 409 to press the moving rod 408. The pressure on the moving rod 408 can drive the moving seat 404 and the pressure roller 405 to move radially outward. The pressure roller 405 can... The molten material can contact the hot-melt zone. Because the hot-melt zones on both sides are in contact, the molten material flowing inward can contact the outer surface of the pressure roller 405. The threaded groove on the outer surface of the pressure roller 405 can make the molten material fully adhere to the inner wall of the molten zone of the pipes on both sides, so that the molten material forms a spiral-guided arc-shaped guide in the molten zone. The spiral arc-shaped guide can improve the mutual coupling effect of the pipes on both sides, improve the impact resistance of the joint area, and generate a spiral when the medium in the pipe flows through the guide. Compared with the radial obstruction of the traditional stepped casting, it can significantly improve the fluidity of the medium.

[0087] Furthermore, the threaded grooves on the outer surface of the pressure roller 405 cause the molten material to fully adhere to the inner wall and form a spiral-shaped arc guide, which can mechanically expand the effective coupling area, suppress crack initiation and propagation, and improve impact resistance and fatigue resistance. When the internal fluid flows, it can alleviate step-like abrupt changes, induce the medium to form a gentle spiral, improve flow continuity, and reduce the risk of local disturbance and scouring.

[0088] Furthermore, the roll forming by the pressure roller 405 can avoid the risk of damage to the inner wall caused by scraping and shaping in similar technologies, making the material structure in the joint area more compact, eliminating the micropores that may exist during hot melting, improving long-term reliability, effectively solving the risk of cold joining, and improving the mechanical and fluid comprehensive performance of the joint.

[0089] The limiting component 3 includes a limiting ring 301, with multiple rollers 302 on the outer periphery of the limiting ring 301. The limiting ring 301 moves within the pipe via the rollers 302. The rollers 302 can be drive wheels with a power source or a single wheel driven by the traction member 6.

[0090] Limiting plate 303, multiple limiting plates 303 are arranged in a sliding groove around the axis of limiting ring 301. The limiting plate 303 is configured to be radially slidably connected to the pipeline. The movement of limiting ring 301 is restricted by the contact between the limiting plate 303 and the inner wall of the pipeline.

[0091] Limiting teeth, multiple limiting teeth are circumferentially arranged outside the arc surface of the limiting plate 303;

[0092] It also includes: a fixing block 304, which is connected to the bottom side of the limiting plate 303, and the fixing block 304 is slidably connected to the sliding groove on one side of the limiting ring 301;

[0093] The wedge 305 is connected to one side of the fixed block 304, and the fixed block 304 moves due to the force exerted on the inclined surface of the wedge 305.

[0094] A drive ring 307 is slidably connected to one side of a limit ring 301. Multiple brake rods 306 are arranged around one side of the drive ring 307. The brake rods 306 extend into the limit ring 301. The brake rods 306 press the inclined surface of the wedge block 305 to drive the fixed block 304 to move radially.

[0095] It also includes: a first spring 308, which is sleeved on the brake lever 306, with the two ends of the first spring 308 respectively connected to the corresponding positions on one side of the drive ring 307 and the limit ring 301;

[0096] A fixed base 312 is connected to the inner side of the drive ring 307, and the fixed base 312 is configured to be movably connected to one side of the limit ring 301;

[0097] Electric push rod 511 is connected to both sides of fixed base 312. One end of the piston rod of electric push rod 511 is connected to the outside of limit ring 301. Electric push rod 511 pushes drive ring 307 and brake rod 306 to move drive limit plate 303 to contact and limit the inner wall of pipe.

[0098] A sliding sleeve 310 is connected to one side of a fixed block 304. A sliding rod 309 is slidably connected inside the sliding sleeve 310, and one end of the sliding rod 309 is connected to a sliding groove.

[0099] The second spring 311 is sleeved on the outside of the slide rod 309, and the two ends of the second spring 311 are respectively connected to the end of the slide rod 309 and one side of the slide sleeve 310 at corresponding positions.

[0100] Specifically: When hot fusion is required, the limiting ring 301 can be moved inside the pipe by pushing it. When the limiting ring 301 moves, the friction between it and the inside of the pipe can be reduced by the external roller 302. When it moves to the front side of the pipe port, the fixed seat 312 can be moved by controlling the electric push rod 511. The movement of the fixed seat 312 can drive the drive ring 307 to move. When the drive rod moves, the brake rod 306 can move and press the wedge 305 at the corresponding position. When the wedge 305 is pressed, it can drive the fixed block 304 to slide outside the slide rod 309 through the sliding sleeve 310 and press the second spring 311. The movement of the fixed block 304 can drive the limiting plate 303 to move radially and abut against the inner wall of the pipe. Thus, the movement of the limiting ring 301 relative to the fusion pipe can be restricted by the radial movement of the limiting plate 303, which is beneficial to improving the stability of the hot fusion connection. The reliable anchoring of the inner fusion is achieved by the limiting plate 303 radially pressing against the inner wall of the pipe. At the same time, it can be quickly unlocked and recycled, improving the axial / radial stability of the inner pipe operation.

[0101] Furthermore, the second spring 311 is designed to maintain the reset of the drive ring 307 by its own elasticity, which facilitates the unlocking of the limit ring 301.

[0102] Furthermore, by controlling the movement of the roller 302 after unlocking or pushing the front sealing mechanism 4 with the traction component 6, it is beneficial to shape the joint area after hot melting.

[0103] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0104] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pipe hot-melt welding device for easy and rapid connection, comprising: The bracket (1) has two slide rails, and multiple locking clamps (2) for locking the pipes are slidably connected between the two slide rails. The two pipes to be heat-fused are aligned and contacted by sliding the locking clamps (2) along the slide rail axis. The bracket is characterized by further comprising: The hot-melting mechanism (5) includes an adjustable support sleeve (501) that slides inside the pipe. The outer periphery of the support sleeve (501) is provided with multiple radially displaceable heating blocks (502). The radially expanded heating blocks (502) are located between the ends of the pipes on both sides to form a melting area. The pipe ends on both sides are brought into contact and fused by the contraction of the heating blocks (502) into the support sleeve (501). The closing mechanism (4) is connected to the rear side of the support sleeve (501) after the stroke. After the heating block (502) contracts, it moves along the pipeline axis to make the closing mechanism (4) contact the hot melt gap to shape. The limiting component (3) is connected to the rear side of the closing mechanism (4). The limiting component (3) is connected to the pipe in a limited manner. The sliding of the limiting component (3) in the pipe supports the front closing mechanism (4) and the hot melt mechanism (5).

2. The pipe hot-melt welding device for easy and rapid connection according to claim 1, characterized in that, The hot-melting mechanism (5) also includes: The inner support ring (504) is coaxially connected to the inner side of the support sleeve (501). The conductive plate (505) and multiple transmission plates are slidably connected to the groove opened on the outer periphery of the inner support ring (504). The bottom side of the conductive plate (505) is connected to the force block (506), which is located on one side of the adjacent pressure block (507). The top end of the conductive plate (505) passes through the inner support ring (504) and is connected to the bottom side of the heating block (502). A connecting sleeve (503) is connected to the bottom of the heating block (502). The connecting sleeve (503) is a flexible telescopic terminal. The other end of the connecting sleeve (503) is telescopically connected to the outside of the inner support ring (504). The outer wall of the inner support ring (504) has a wire groove. The wire harness led out from the heating block (502) extends from the wire groove to the outside. The connecting sleeve (503) is an elastic sleeve. A rotating ring (508) is rotatably connected to the inner cavity of the support sleeve (501). Multiple pressure blocks (507) for driving the force-bearing block (506) are arranged around the outer periphery of the rotating ring (508) along the axis. The rotation of the rotating ring (508) causes the pressure blocks (507) to squeeze the force-bearing block (506) to move radially.

3. The pipe hot-melt welding device according to claim 2, characterized in that, Also includes: The connecting rod (509) has rotating blocks (510) rotatably connected to both ends. One rotating block (510) is connected to the outside of the rotating ring (508), and the other rotating block (510) is connected to an electric push rod (511). The electric push rod (511) is connected to the inside of the inner support ring (504). The rotating block (510) and the rotating ring (508) are rotated by the working extension of the electric push rod (511).

4. The pipe hot-melt welding device for easy and rapid connection according to claim 2, characterized in that, Also includes: The traction component (6) is connected to the rear side of the limiting component (3). The traction component (6) pulls the limiting component (3) to adjust the hot melt position in the pipeline.

5. The pipe hot-melt welding device for easy and rapid connection according to claim 1, characterized in that, The closing mechanism (4) includes: A closing ring (401) is connected to the rear side of the support sleeve (501), and the closing ring (401) is opposite to the axis of the support sleeve (501); Pressure rollers (405) are arranged around the outer periphery of the closed ring (401). The outer periphery of the closed ring (401) has an annular cavity. The pressure rollers (405) are movably connected to the annular cavity on the outer periphery of the closed ring (401). The pressure rollers (405) extrude and shape the molten area to enhance the joint strength.

6. A pipe hot-melt welding device for easy and rapid connection according to claim 5, characterized in that, Also includes: The movable seat (404) is rotatably connected to the outside of the pressure roller (405). The bottom sides of the movable seat (404) are connected to the third spring (406), and the other end of the third spring (406) is connected to the inner side of the annular cavity outside the closed ring (401). Multiple sliding grooves are arranged around the axis of the closed ring (401) and opened on the inner wall of the annular cavity. The control block (407) is slidably connected to the sliding groove via the bottom-connected moving rod (408). The movement of the control block (407) causes the pressure pipe to move radially to fit the molten joint area of ​​the pipes on both sides. A turntable (410) is rotatably connected to a closed ring (401). A drive component (403) is installed on the rear side of the turntable (410). A mounting plate (402) is provided on one side of the drive component (403). The mounting plate (402) is connected to one side of the limiting component (3). A plurality of protrusions (409) are connected around the outside of the turntable (410) along the axis of the turntable (410). The cross-sectional shape of the protrusion (409) is triangular. After the protrusion (409) rotates, the inclined surface contacts the moving rod (408) to push the pressure roller (405) to move radially.

7. The pipe hot-melt welding device according to claim 1, characterized in that, The limiting component (3) includes: A limiting ring (301) is provided with multiple rollers (302) on its outer periphery. The limiting ring (301) moves in the pipeline via the rollers (302). A limiting plate (303) is provided with multiple limiting plates (303) arranged in a sliding groove around the axis of the limiting ring (301). The limiting plate (303) is configured to be radially slidably connected to the pipeline. The movement of the limiting ring (301) is restricted by the contact between the limiting plate (303) and the inner wall of the pipeline. Limiting teeth, multiple limiting teeth are arranged circumferentially outside the arc surface of the limiting plate (303).

8. A pipe hot-melt welding device for easy and rapid connection according to claim 7, characterized in that, Also includes: A fixing block (304) is connected to the bottom side of the limiting plate (303), and the fixing block (304) is slidably connected to the sliding groove on one side of the limiting ring (301); A wedge (305) is connected to one side of a fixed block (304), and the fixed block (304) moves by being driven by the force on the inclined surface of the wedge (305); A drive ring (307) is slidably connected to one side of a limiting ring (301). A plurality of brake rods (306) are arranged around one side of the drive ring (307). The brake rods (306) extend into the limiting ring (301) and drive the fixed block (304) to move radially by pressing the inclined surface of the wedge block (305) through the brake rods (306).

9. A pipe hot-melt welding device for easy and rapid connection according to claim 8, characterized in that, Also includes: The first spring (308) is sleeved on the brake rod (306), and the two ends of the first spring (308) are respectively connected to the corresponding positions on one side of the drive ring (307) and the limiting ring (301); A fixed base (312) is connected to the inner side of the drive ring (307), and the fixed base (312) is configured to be movably connected to one side of the limiting ring (301); An electric push rod (511) is connected to both sides of a fixed base (312). One end of the piston rod of the electric push rod (511) is connected to the outside of a limiting ring (301). The electric push rod (511) pushes the drive ring (307) and brake rod (306) to move the driving limiting plate (303) to contact and limit the inner wall of the pipe.

10. A pipe hot-melt welding device for easy and rapid connection according to claim 9, characterized in that, Also includes: A sliding sleeve (310) is connected to one side of a fixed block (304). A sliding rod (309) is slidably connected inside the sliding sleeve (310). One end of the sliding rod (309) is connected to a sliding groove. The second spring (311) is sleeved on the outside of the slide rod (309), and the two ends of the second spring (311) are respectively connected to the end of the slide rod (309) and the corresponding position of the slide sleeve (310).

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