PE pipeline welding equipment

Abstract

The invention discloses PE pipeline welding equipment which comprises a base, a hot melting device body and a clamping mechanism are arranged on the base, and the clamping mechanism is connected with the base through a pushing mechanism; the pushing mechanism comprises a fixing strip, a supporting plate and a push-pull plate, the fixing strip is fixedly arranged on the base, a rail is movably arranged on the base on the inner side of the fixing strip, a sliding strip is arranged at the bottom of the supporting plate and is in sliding fit with a groove in the rail, the inner end of the push-pull plate is fixedly connected with the supporting plate, and the sliding strip is fixedly connected with the sliding strip. The push-pull plate is arranged in a penetrating groove formed in the fixing strip in a penetrating mode. The clamping mechanism has the advantages that the clamping mechanism can be pulled away from the hot melting die head to clamp the pipe end, the clamped pipe end is pushed to be in butt joint with the hot melting die head, and the hands of workers do not need to be too close to the hot melting die head.

Description

Technical Field

[0001] The present invention relates to the technical field of PE pipeline processing, and specifically relates to a PE pipeline welding device. Background Art

[0002] PE pipelines are pipelines made mainly of polyethylene, which is a thermoplastic resin with high crystallinity and non-polarity. The main characteristics of PE pipelines include corrosion resistance, high strength and toughness, flexibility, good connection methods, and economy, etc.

[0003] PE pipelines are usually connected by hot melting or electrofusion, which can form an integral body to ensure the sealing performance and durability of the pipeline. The hot melting connection method uses a hot melt machine, which is a professional welding tool for heating and melting thermoplastic plastic pipes and molds and then connecting them. The hot melt machine mainly includes a housing, and a microcomputer board, a transformer, etc. are arranged inside the housing. A radiator, a heating plate, a hot melt die head, etc. are arranged in sequence on the housing. The large and small ends of the hot melt die head are fixed to the heating plate through fixing screws. When welding a pipe, the pipe and the pipe end are simultaneously pushed into the hot melt die head of the hot melt machine without rotation. After reaching the heating time, the pipe and the pipe end are taken out from the die head and butted.

[0004] The pipe ends of PE pipelines are generally relatively short. When workers perform hot melting connection of the pipe and the pipe end, the workers hold the pipe end by hand and butt it with the corresponding hot melt die head. The hand is relatively close to the hot melt die head, which poses a safety hazard.

[0005] In view of this, we propose a PE pipeline welding device. Summary of the Invention

[0006] The purpose of the present invention is to provide a PE pipeline welding device to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A PE pipeline welding device includes a base, a hot melt machine body and a clamping mechanism are arranged on the base, and the clamping mechanism is connected to the base through a pushing mechanism;

[0008] The pushing mechanism includes a fixed strip, a support plate and a push-pull plate. The fixed strip is fixed on the base. A track is movably arranged on the base inside the fixed strip. A sliding strip is arranged at the bottom of the support plate. The cross section of the sliding strip is T-shaped, and the sliding strip is slidably matched with the groove on the track. The inner end of the push-pull plate is fixedly connected to the support plate. The push-pull plate passes through a through groove opened on the fixed strip. The push-pull plate is L-shaped, and a longitudinal section is arranged at the outer end of the push-pull plate.

[0009] Preferably, a plurality of guiding blocks are provided on the bottom side of the track, and a plurality of guiding grooves are formed on the base. The plurality of guiding blocks are slidably engaged with the plurality of guiding grooves.

[0010] Preferably, a plurality of abutting elastic pieces are provided on the top of the inner wall of the groove on the track. An abutting groove is formed on the side of the sliding bar. The abutting groove is in abutting engagement with the abutting elastic pieces. The abutting elastic pieces are arc-shaped. The arched section of the abutting elastic piece is adapted to the abutting groove. There is a gap between the top of the inner wall of the groove on the track and the side of the sliding bar corresponding to the abutting groove.

[0011] Preferably, an L-shaped block is fixedly provided on the side of the support plate. A plug post is inserted through the longitudinal section of the L-shaped block. An end block is fixedly provided at the outer end of the plug post. A spring is provided between the end block and the longitudinal section of the L-shaped block. The two ends of the spring are respectively fixedly connected to the end block and the longitudinal section of the L-shaped block. The spring is always in a stretched state. The inner end of the plug post is inserted and engaged with a plurality of jacks formed on the side of the track.

[0012] Preferably, the clamping mechanism includes an annular plate, a fixed block, a rack and a moving column. The annular plate is connected to the support plate. A toothed disc is rotatably provided on the annular plate. The fixed block is fixedly provided on the support plate. A screw A is threadedly inserted into a threaded hole on the fixed block. A rotating handle A is fixedly provided at one end of the screw A. An activity block is provided at the other end of the screw A through a rotating shaft. The activity block is connected to the rack. One side of the rack is in contact and cooperation with the support plate. The bottom side of the rack is in support cooperation with the fixed block. The rack is in meshing connection with the teeth on the outer ring of the toothed disc. A plurality of holders are arranged in an annular array on the side of the annular plate. A bevel gear is rotatably provided in each of the plurality of holders. A shaft is inserted through the bevel gear. One end of the shaft is rotatably connected to a transverse section of the holder through a rotating shaft. The bevel gear is in bevel gear meshing connection with the toothed disc. A screw B is connected to the bevel gear. The inner end of the screw B is connected to the other end of the shaft inserted through the other transverse section of the holder. The screw B is in threaded connection with a threaded hole formed on the moving column. A clamping block is provided at the outer end of the moving column. The clamping block is L-shaped. The transverse section of the clamping block is fixedly connected to the outer end of the moving column.

[0013] Preferably, a plurality of sliding grooves are formed in an annular array on the annular plate. The sliding grooves are arc-shaped. The arc length of the sliding groove is less than the length of the rack. A connecting shaft is sequentially slidably provided in each of the plurality of sliding grooves. The plurality of connecting shafts are respectively connected to the toothed disc. A round block provided at the end of the connecting shaft away from the toothed disc is in contact and cooperation with the side of the annular plate. The diameter of the round block is greater than the diameter of the connecting shaft.

[0014] Preferably, a guiding strip is provided on the holder. The guiding strip is fixedly connected to the other transverse section of the holder. A limiting groove formed on the guiding strip is in limiting cooperation with the moving column.

[0015] Preferably, an extension block is arranged at the lateral end of the clamping block. A screw C is threadedly inserted into the threaded hole of the lateral section of the clamping block. One end of the screw C is rotatably connected to the extension block, and a rotating handle B is fixedly provided at the other end of the screw C. A plurality of telescopic members are arranged between the lateral section of the clamping block and the extension block. The bushing of the telescopic member is embedded and connected in the hole of the lateral section of the clamping block, and the guide shaft of the telescopic member is connected to the extension block.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. By providing a fixing strip, a track, a support plate, a sliding strip and a push-pull plate, the present invention has the advantage of being able to pull the clamping mechanism away from the hot-melt die head to clamp the pipe end, and push the clamped pipe end to dock with the hot-melt die head, so that the hands of the staff do not need to be too close to the hot-melt die head, solving the problem that the hand holding the pipe end is too close to the hot-melt die head, resulting in potential safety hazards.

[0018] 2. By providing an L-shaped block, a plug post, an end block, a spring and a jack, the present invention has the advantage of positioning the clamping mechanism relative to the track when the pipe end clamped by the clamping mechanism corresponds to the corresponding hot-melt die head, and maintaining stability when pushing the clamping mechanism towards the hot-melt die head.

[0019] 3. By providing an annular plate, a toothed disc, a connecting shaft, a cage, bevel gears, a fixed block, a screw A, a movable block, a rack, a rotating handle A, a screw B, a moving column, a guide strip and a clamping block, the present invention has the advantage of adjusting the clamping correspondingly according to the size of the selected pipe end, being applicable to clamping different models of pipe ends, and having strong applicability.

[0020] 4. By providing a guide strip and a limiting groove, the present invention has the advantage that the square moving column is limited by sliding cooperation with the limiting groove during the moving process, so that the moving column remains stable during the moving process.

[0021] 5. By providing an extension block, a screw C, a rotating handle B and a telescopic member, the present invention has the advantage of adjusting the clamping length of the lateral section of the clamping block and the extension block according to the length of the pipe end, being applicable to clamping pipe ends of different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of the connection between the clamping mechanism and the pushing mechanism of the present invention;

[0024] Figure 3 is a schematic diagram of the pushing mechanism of the present invention;

[0025] Figure 4 is of the present invention Figure 3 magnified schematic diagram at A;

[0026] Figure 5 Schematic diagram of the slide bar structure of the present invention;

[0027] Figure 6 Exploded view of the clamping mechanism of the present invention

[0028] Figure 7 Schematic diagram of the clamping part of the clamping mechanism of the present invention

[0029] Figure 8 Schematic diagram of the sectional view of the clamping block and the connection structure of the extension block of the present invention.

[0030] In the figure: 100, base; 200, hot melt machine body; 300, clamping mechanism; 400, pushing mechanism;

[0031] 101, guiding groove;

[0032] 301, ring plate; 302, gear disk; 303, connecting shaft; 304, cage; 305, bevel gear; 306, fixing block; 307, screw A; 308, movable block; 309, rack; 310, turning handle A; 311, screw B; 312, moving column; 313, guiding strip; 314, clamping block; 315, extension block; 316, screw C; 317, turning handle B; 318, telescopic member;

[0033] 3011, sliding groove;

[0034] 3131, limiting groove;

[0035] 401, fixing strip; 402, track; 403, support plate; 404, slide bar; 405, push-pull plate; 406, L-shaped block; 407, inserting post; 408, end block; 409, spring;

[0036] 4011, through groove;

[0037] 4021, guiding block; 4022, abutting elastic piece; 4023, jack;

[0038] 4041, abutting groove. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Please refer to Figure 1 and Figure 2, an embodiment provided by the present invention: a PE pipe welding device, including a base 100, on which a hot melt device body 200 and a clamping mechanism 300 are provided. The hot melt device body 200 mainly includes a housing, which is internally provided with a microcomputer board, a transformer, etc. On the housing, a radiator, a heating plate, a hot melt die head, etc. are arranged in sequence. The large and small ends of the hot melt die head are fixed to the heating plate through fixing screws; the clamping mechanism 300 is connected to the base 100 through a pushing mechanism 400;

[0041] The pushing mechanism 400 includes a fixing strip 401, a support plate 403 and a push-pull plate 405. The fixing strip 401 is fixed on the base 100. On the base 100 inside the fixing strip 401, a track 402 is movably provided. The bottom side of the track 402 is in contact and cooperation with the base 100; a sliding strip 404 is provided at the bottom of the support plate 403. The cross-section of the sliding strip 404 is T-shaped, and the sliding strip 404 is slidably matched with the groove on the track 402. The T-shaped sliding strip 404 is in stable contact with the groove on the track 402; the inner end of the push-pull plate 405 is fixedly connected to the support plate 403. The push-pull plate 405 passes through a through groove 4011 opened on the fixing strip 401. The upper and lower sides of the horizontal section of the push-pull plate 405 are in contact and cooperation with the upper and lower inner walls of the through groove 4011. The push-pull plate 405 is L-shaped, and a longitudinal section is provided at the outer end of the push-pull plate 405. The longitudinal section of the push-pull plate 405 is the stress end for pulling. Pull the longitudinal section of the push-pull plate 405 outwards, and the support plate 403 will be pulled accordingly. The sliding strip 404 drives the track 402 to move until the track 402 touches the fixing strip 401 and stops. Clamp the corresponding pipe end at the clamping mechanism 300, push the clamping mechanism 300 along the track 402, adjust the clamped pipe end to correspond to the corresponding hot melt die head, and then push the push-pull plate 405 to make the clamped pipe end move towards the corresponding hot melt die head until the clamped pipe end is docked with the hot melt die head for hot melting treatment.

[0042] By setting the fixing strip 401, the track 402, the support plate 403, the sliding strip 404 and the push-pull plate 405, the present invention has the advantages that the clamping mechanism 300 can be pulled away from the hot melt die head to clamp the pipe end, and the clamped pipe end can be pushed to be docked with the hot melt die head, so that the staff's hands do not need to be too close to the hot melt die head, solving the problem that the hand holding the pipe end is relatively close to the hot melt die head, resulting in potential safety hazards.

[0043] Please refer to Figure 2 and Figure 3 , an embodiment provided by the present invention: a PE pipe welding device. A plurality of guiding blocks 4021 are provided on the bottom side of the track 402, and a plurality of guiding grooves 101 are opened on the base 100. The plurality of guiding blocks 4021 are slidably matched with the plurality of guiding grooves 101. Through the sliding of the guiding blocks 4021 along the guiding grooves 101, the track 402 is kept stable horizontally when being driven to move.

[0044] Please refer to Figure 3 and Figure 5 For an embodiment provided by the present invention: a PE pipe fusion device, a plurality of abutting elastic pieces 4022 are provided at the top of the inner wall of the groove on the track 402, an abutting groove 4041 is formed on the side of the sliding bar 404, the abutting groove 4041 is in abutting cooperation with the abutting elastic piece 4022, the abutting elastic piece 4022 is arc-shaped, the arched section of the abutting elastic piece 4022 is adapted to the abutting groove 4041, and the arc-shaped abutting elastic piece 4022 can be smoothly squeezed when being squeezed by the sliding bar 404. And when the abutting elastic piece 4022 corresponds to the abutting groove 4041, there will be a sense of block when the arched end of the abutting elastic piece 4022 rebounds and abuts in the abutting groove 4041. After different abutting elastic pieces 4022 are abutted against the abutting groove 4041, the clamping mechanism 300 corresponds to the corresponding hot melting die head, and the sense of block can remind the staff that the correspondence is in place; there is a gap between the top of the inner wall of the groove on the track 402 and the side of the sliding bar 404 corresponding to the abutting groove 4041, and the abutting elastic piece 4022 has enough space when being squeezed by the sliding bar 404.

[0045] By providing the abutting elastic piece 4022 and the abutting groove 4041, the present invention has the advantage that there will be a sense of block when the arched end of the abutting elastic piece 4022 rebounds and abuts in the abutting groove 4041. After different abutting elastic pieces 4022 are abutted against the abutting groove 4041, the clamping mechanism 300 corresponds to the corresponding hot melting die head, and the sense of block can remind the staff that the correspondence is in place.

[0046] Please refer to Figure 3 and Figure 4, an embodiment provided by the present invention: a PE pipe welding device. An L-shaped block 406 is fixedly arranged on the side of the support plate 403. The horizontal end of the L-shaped block 406 is fixedly connected to the side of the support plate 403. A plug post 407 is inserted through the vertical section of the L-shaped block 406. A hole adapted to the plug post 407 is formed in the vertical section of the L-shaped block 406. An end block 408 is fixedly arranged at the outer end of the plug post 407. A spring 409 is arranged between the end block 408 and the vertical section of the L-shaped block 406. Two ends of the spring 409 are respectively fixedly connected to the end block 408 and the vertical section of the L-shaped block 406. The spring 409 is always in a stretched state. The elastic coefficient of the spring 409 is selected and used by technicians in this field according to the actual situation. The inner end of the plug post 407 is inserted and matched with a plurality of jacks 4023 formed on the side of the track 402. The positions of the plurality of jacks 4023, the plurality of abutting elastic pieces 4022 and the plurality of hot melting dies on the longitudinal plane correspond one by one. Among them, each hot melting die corresponds to a jack 4023 and an abutting elastic piece 4022. When moving the clamping mechanism 300 along the track 402, the end block 408 is pulled out, and the plug post 407 is pulled out accordingly. The spring 409 is further stretched. The sliding bar 404 slides along the groove on the track 402 until the corresponding abutting elastic piece 4022 abuts against the abutting groove 4041, indicating that the pipe end held by the clamping mechanism 300 corresponds to the corresponding hot melting die. At this time, the end block 408 is released. Under the action of the spring 409, the end block 408 pushes the plug post 407 to move back until the inner end of the plug post 407 is inserted into the corresponding jack 4023, thereby positioning the support plate 403 relative to the track 402, so that the sliding bar 404 remains stable in the groove of the track 402 and remains stable when pushing the clamping mechanism 300 towards the hot melting die.

[0047] By providing the L-shaped block 406, the plug post 407, the end block 408, the spring 409 and the jack 4023, the present invention has the advantages of positioning the clamping mechanism 300 relative to the track 402 when the pipe end held by the clamping mechanism 300 corresponds to the corresponding hot melting die and remaining stable when pushing the clamping mechanism 300 towards the hot melting die.

[0048] Please refer to Figure 6 and Figure 7, an embodiment provided by the present invention: a PE pipe fusion welding device. The clamping mechanism 300 includes an annular plate 301, a fixed block 306, a rack 309, and a moving column 312. The annular plate 301 is connected to the support plate 403. The bottom end of the annular plate 301 is fixedly connected to the arc side of the top end of the support plate 403. A toothed disc 302 is rotatably provided on the annular plate 301. The fixed block 306 is fixedly provided on the support plate 403. A screw A307 is threadedly inserted into the threaded hole on the fixed block 306. One end of the screw A307 is fixedly provided with a turning handle A310. The other end of the screw A307 is provided with a movable block 308 through a rotating shaft. The movable block 308 is connected to the rack 309. One side of the rack 309 is in contact and cooperation with the support plate 403. The bottom side of the rack 309 is in supporting cooperation with the fixed block 306. The rack 309 remains stable during movement. The rack 309 is meshed and connected with the teeth on the outer ring of the toothed disc 302. A plurality of holders 304 are arranged in an annular array on the side of the annular plate 301. The holders 304 are not in contact with the teeth on the outer ring of the toothed disc 302. Bevel gears 305 are rotatably provided in a plurality of holders 304. A shaft is inserted through the bevel gear 305. One end of the shaft is rotatably connected to a transverse section of the holder 304 through a rotating shaft. The bevel gear 305 is meshed and connected with the bevel teeth of the toothed disc 302. A screw B311 is connected to the bevel gear 305. The inner end of the screw B311 is connected to the other end of the shaft passing through the other transverse section of the holder 304. The screw B311 is threadedly connected to the threaded hole opened on the moving column 312. The moving column 312 is square. A clamping block 314 is provided at the outer end of the moving column 312. The clamping block 314 is L-shaped. The transverse section of the clamping block 314 is fixedly connected to the outer end of the moving column 312. When clamping the pipe end, place the selected pipe end between a plurality of clamping blocks 314. The pipe end first contacts one of the clamping blocks 314, and the non-fusion end of the pipe end contacts the longitudinal section of one of the clamping blocks 314. Rotate the turning handle A310. The screw A307 rotates relative to the fixed block 306 and moves out relative to the fixed block 306. The screw A307 rotates relative to the movable block 308 and drives the movable block 308 to move. The rack 309 moves accordingly. Under the meshing action of the rack 309 and the teeth on the outer ring of the toothed disc 302, the toothed disc 302 rotates clockwise. The connecting shaft 303 slides along the chute 3011. Under the meshing action of the bevel gear 305 and the bevel teeth of the toothed disc 302, the bevel gear 305 rotates counterclockwise relative to the central axis in the inward direction. The screw B311 rotates accordingly. The moving column 312 moves out relative to the screw B311. A plurality of clamping blocks 314 move relatively. During this process, the pipe end is adjusted accordingly until a plurality of clamping blocks 314 clamp and position the pipe end. Subsequently, the same type of pipe end can be directly pulled out or pushed into the plurality of clamping blocks 314, overcoming the corresponding frictional force.

[0049] The present invention has the advantages of strong applicability by setting a ring plate 301, a gear disk 302, a connecting shaft 303, a cage 304, bevel gears 305, fixed blocks 306, screw A 307, movable blocks 308, racks 309, turning handle A 310, screw B 311, moving columns 312, guide bars 313 and clamping blocks 314, and adjusting the clamping correspondingly according to the size of the selected pipe end head, which is applicable to the clamping of different models of pipe end heads.

[0050] Please refer to Figure 6 , an embodiment provided by the present invention: a PE pipe welding device. A plurality of sliding grooves 3011 are formed in the ring plate 301 in an annular array. The sliding grooves 3011 are arc-shaped, and the arc length of the sliding grooves 3011 is less than the length of the rack 309. Within the rotation range of the gear disk 302, the rack 309 is always meshed with the teeth on the outer ring of the gear disk 302. A connecting shaft 303 is slidably arranged in sequence in the plurality of sliding grooves 3011. The plurality of connecting shafts 303 are respectively connected to the gear disk 302. The round block arranged at one end of the connecting shaft 303 away from the gear disk 302 is in contact and cooperation with the side of the ring plate 301. The diameter of the round block is greater than the diameter of the connecting shaft 303, and the connecting shaft 303 slides stably along the sliding groove 3011.

[0051] Please refer to Figure 7 , an embodiment provided by the present invention: a PE pipe welding device. A guide bar 313 is arranged on the cage 304. The guide bar 313 is fixedly connected to the other transverse section of the cage 304. The limiting groove 3131 formed in the guide bar 313 is in limiting cooperation with the moving column 312.

[0052] By setting the guide bar 313 and the limiting groove 3131, the present invention has the advantages that the square moving column 312 is limited by sliding cooperation with the limiting groove 3131 during the moving process, so that the moving column 312 remains stable during the moving process.

[0053] Please refer to Figure 8, an embodiment provided by the present invention: a PE pipe fusion welding device. An extension block 315 is arranged at the lateral end of the clamping block 314. A screw rod C316 is threadedly inserted into the threaded hole of the lateral section of the clamping block 314. One end of the screw rod C316 is rotatably connected to the extension block 315. A rotating shaft is connected between one end of the screw rod C316 and the extension block 315. The other end of the screw rod C316 is fixedly provided with a turning handle B317. A plurality of telescopic members 318 are arranged between the lateral section of the clamping block 314 and the extension block 315. The bushing of the telescopic member 318 is embedded and connected to the hole of the lateral section of the clamping block 314. The guide shaft of the telescopic member 318 is connected to the extension block 315. The side of the lateral section of the clamping block 314 corresponds to the side of the extension block 315. According to the length of the pipe end to be clamped, if the length of the pipe end exceeds the total length of the lateral section of the clamping block 314 and the extension block 315, then rotate the turning handle B317, and the screw rod C316 rotates accordingly. By the screw rod C316, the extension block 315 is pushed to move out relative to the lateral section of the clamping block 314, and the telescopic member 318 elongates accordingly until it exceeds the length of the pipe end and completely contacts and clamps the pipe end.

[0054] By setting the extension block 315, the screw rod C316, the turning handle B317 and the telescopic member 318, the present invention has the advantage of adjusting the clamping length of the lateral section of the clamping block 314 and the extension block 315 according to the length of the pipe end, and being applicable to clamping pipe ends of different lengths.

[0055] Working principle: When performing hot melting connection on the pipe fitting and the pipe end, pull the longitudinal section of the push-pull plate 405 outwards. The support plate 403 is driven accordingly, and the sliding bar 404 drives the track 402 to move until the track 402 touches the fixed bar 401 and then stops. According to the length of the clamped pipe end, if the length of the pipe end exceeds the total length of the transverse section of the clamping block 314 and the extension block 315, rotate the turning handle B317, and the screw C316 rotates accordingly. The extension block 315 is pushed out relative to the transverse section of the clamping block 314 through the screw C316, and the telescopic member 318 elongates accordingly until it exceeds the length of the pipe end. Place the selected pipe end correspondingly between multiple clamping blocks 314. The pipe end first touches one of the clamping blocks 314, and the non-hot-melt end of the pipe end touches the longitudinal section of a clamping block 314. Rotate the turning handle A310, the screw A307 rotates relative to the fixed block 306 and moves out relative to the fixed block 306. The screw A307 rotates relative to the movable block 308 and drives the movable block 308 to move, and the rack 309 moves accordingly. Under the meshing action of the rack 309 and the teeth on the outer ring of the gear disk 302, the gear disk 302 rotates clockwise, the connecting shaft 303 slides along the chute 3011. Under the meshing action of the bevel gear 305 and the bevel teeth of the gear disk 302, the bevel gear 305 rotates counterclockwise relative to the central axis in the inward direction accordingly, the screw B311 rotates accordingly, the moving column 312 moves out relative to the screw B311. The L-shaped moving column 312 is limited during the moving process through the sliding fit with the limiting groove 3131. Multiple clamping blocks 314 move relatively. During this process, keep the pipe end adjusted accordingly until multiple clamping blocks 314 clamp and position the pipe end. According to the model of the clamped pipe end, it is necessary to adjust to the corresponding hot melting die head accordingly. Then move the clamping mechanism 300 along the track 402, pull out the end block 408, and the plug post 407 is pulled out accordingly. The spring 409 is further stretched. The sliding bar 404 slides along the groove on the track 402 until a blocking feeling is generated when the corresponding abutting elastic piece 4022 and the abutting groove 4041 are abutted, indicating that the pipe end clamped by the clamping mechanism 300 corresponds to the corresponding hot melting die head. At this time, loosen the end block 408. Under the action of the spring 409, the end block 408 pushes the plug post 407 to move back until the inner end of the plug post 407 is inserted into the corresponding jack 4023. Then push the push-pull plate 405 to make the clamped pipe end move towards the corresponding hot melting die head until the clamped pipe end is butted with the hot melting die head for hot melting treatment, and the pipe fitting is subjected to hot melting treatment with another one of the same set of hot melting die heads. After hot melting, pull the push-pull plate 405 outwards to make the pipe end leave the hot melting die head. Hold the non-hot-melt end of the pipe end at the unclamped section between multiple clamping blocks 314 and push out the pipe end. The pipe end can be directly pulled out between multiple clamping blocks 314, overcoming the friction force of the clamping blocks 314 and the extension blocks 315, and butt the hot-melted pipe end and the pipe fitting.

[0056] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A PE pipe welding device, characterized in that: It comprises a base (100), on which a hot-melt body (200) and a clamping mechanism (300) are arranged, and the clamping mechanism (300) is connected to the base (100) via a pushing mechanism (400); The pushing mechanism (400) comprises a fixing bar (401), a supporting plate (403) and a push-pull plate (405); the fixing bar (401) is fixed on the base (100); a track (402) is movably provided on the base (100) inside the fixing bar (401); a sliding bar (404) is provided at the bottom of the supporting plate (403); the sliding bar (404) is slidably matched with a groove on the track (402); the inner end of the push-pull plate (405) is fixedly connected to the supporting plate (403); and the push-pull plate (405) is inserted into a through groove (4011) provided on the fixing bar (401).

2. A PE pipe welding device according to claim 1, characterized in that: A plurality of guide blocks (4021) are provided on the bottom side of the track (402), a plurality of guide grooves (101) are provided on the base (100), and the plurality of guide blocks (4021) are slidably matched with the plurality of guide grooves (101).

3. A PE pipe welding device according to claim 1, characterized in that: A plurality of abutment spring sheets (4022) are provided on the top of the inner wall of the groove on the track (402), and an abutment groove (4041) is provided on the side of the sliding bar (404), and the abutment groove (4041) abuts and cooperates with the abutment spring sheets (4022).

4. A PE pipe welding device according to claim 1, characterized in that: An L-shaped block (406) is fixedly provided on the side of the support plate (403), a plug post (407) is passed through the longitudinal section of the L-shaped block (406), an end block (408) is fixedly provided on the outer end of the plug post (407), a spring (409) is provided between the end block (408) and the longitudinal section of the L-shaped block (406), and the inner end of the plug post (407) is plugged and matched with a plurality of plug holes (4023) provided on the side of the track (402).

5. A PE pipe welding device according to claim 1, characterized in that: The clamping mechanism (300) comprises a ring plate (301), a fixed block (306), a rack (309) and a movable column (312); the ring plate (301) is connected to the support plate (403); a toothed disc (302) is rotatably provided on the ring plate (301); the fixed block (306) is fixedly provided on the support plate (403); a screw rod A (307) is threadedly passed through a threaded hole on the fixed block (306); a rotating handle A (310) is fixedly provided at one end of the screw rod A (307); a movable block (308) is provided at the other end of the screw rod A (307) via a rotating shaft; the movable block (308) The toothed plate (302) is connected to the toothed rack (308), the toothed rack (309) is meshed with the teeth of the outer ring of the toothed plate (302), a plurality of retaining frames (304) are provided in a circular array on the side of the ring plate (301), a bevel gear (305) is rotatably provided inside the plurality of retaining frames (304), the bevel gear (305) is meshed with the bevel teeth of the toothed plate (302), a screw rod B (311) is connected to the bevel gear (305), the screw rod B (311) is threadedly connected to a threaded hole provided on the movable column (312), and a clamping block (314) is provided at the outer end of the movable column (312).

6. A PE pipe welding device according to claim 5, characterized in that: The ring plate (301) is provided with a plurality of slide grooves (3011) in an annular array, and connecting shafts (303) are sequentially slidably arranged in the plurality of slide grooves (3011), and the plurality of connecting shafts (303) are respectively connected to the toothed disc (302).

7. A PE pipe welding device according to claim 5, characterized in that: The retaining frame (304) is provided with a guide bar (313), and a limiting groove (3131) provided on the guide bar (313) is matched with the movable column (312) in a limiting manner.

8. A PE pipe welding device according to claim 5, characterized in that: An extension block (315) is arranged at the transverse end of the clamping block (314); a screw rod C (316) is threadedly inserted into the threaded hole of the transverse section of the clamping block (314); one end of the screw rod C (316) is rotatably connected to the extension block (315); a rotating handle B (317) is fixedly arranged at the other end of the screw rod C (316); and a plurality of telescopic parts (318) are arranged between the transverse section of the clamping block (314) and the extension block (315).

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