CN113561456B

CN113561456B - Plastic pipe bending equipment

Info

Publication number: CN113561456B
Application number: CN202111109383.2A
Authority: CN
Inventors: 秦晓鹏; 魏先锋
Original assignee: Enove Precision Plastics Catheter Co ltd
Current assignee: Enove Precision Plastics Catheter Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2021-11-30
Anticipated expiration: 2041-09-22
Also published as: CN113561456A

Abstract

The invention relates to the technical field of plastic processing, and discloses plastic conduit pipe bending equipment which comprises an equipment main body, a positioning mechanism, a plastic conduit pipe, a heating mechanism, a first bending piece and a second bending piece. According to the plastic conduit pipe bending device, the plastic conduit pipe is wrapped in a cylindrical area formed by two reticular electric heating wires by moving the heating mechanism, the air blowing device blows air at a constant speed through the ventilation opening, heat emitted by the reticular electric heating wires is uniformly blown to the surface of the plastic conduit pipe, and the surface of the plastic conduit pipe is uniformly heated; drive the plastic pipe both ends through positioning mechanism and be the arc and remove, be close to the second along with first bending and bend the piece until closing up, the plastic pipe part of heat softening is extruded into between the medial surface of first bending and second bending, and the plastic pipe surface is closely laminated with the medial surface of first bending and second bending, guarantees that the smooth uniform in partial surface of bending, circulates through the comdenstion water circulation, and to the plastic pipe rapid cooling of bending stereotype.

Description

Plastic pipe bending equipment

Technical Field

The invention relates to the technical field of plastic processing, in particular to plastic conduit pipe bending equipment.

Background

In various fields of building and medical treatment, various plastic pipes are required to be widely used, and sometimes the plastic pipe needs to be bent to a required angle.

Chinese patent with application number CN201910637059.4 discloses a pipe bending device of a plastic pipe bending device, which comprises a rack platform and a screw rod transmission mechanism, wherein the end of a screw rod of the screw rod transmission mechanism is connected with a fixed frame, the left end and the right end of the fixed frame are respectively hinged with a left push rod and a right push rod, the left push rod and the right push rod are connected with supporting rods, the lower ends of the supporting rods are connected with wheels, the wheels are positioned on the rack platform, the ends of the left push rod and the right push rod are connected with concave wheels, pillars provided with rollers are respectively fixed on the rack platform below the left push rod and the right push rod, the rollers are positioned at the inner sides of the push rods, the roller surfaces are attached to the push rods, and springs are arranged between the left push rod and the right push rod; the tail end of the screw rod is further connected with a flat plate, the flat plate is located in the middle between the left push rod and the right push rod, the tail end of the flat plate is connected with a top plate, the tail end of the ejector rod is connected with a concave block, a pressure spring is sleeved on the ejector rod and abuts against between the shaft sleeve and the concave block, and a pressing die is arranged on a rack platform at the corresponding concave block.

The device proposed in this patent, however, has some drawbacks: before the plastic pipe is bent, the preheating device is difficult to ensure that the surface of the plastic pipe is uniformly heated, and if the surface of the plastic pipe is not uniformly heated, the subsequent bending effect is influenced; the device finishes the bending operation by placing a preheated plastic pipe workpiece in a pipe bending groove and extruding the plastic pipe by the concave wheel and the concave blocks on two sides, and because the contact areas of the concave wheel and the concave blocks and the surface of the plastic pipe are too small, the surface of the plastic pipe softened by heating can be sunken at the force application part in the force application process of the concave wheel and the concave blocks, the attractiveness of the bent part of the plastic pipe is seriously damaged, and the plastic pipe becomes a defective product.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides plastic conduit pipe bending equipment which has the advantages of uniformly heating the surface of a plastic conduit pipe, smoothing the surface of a bending part and the like, and solves the problems that the plastic conduit pipe is easily heated unevenly before being bent and the surface of the bending part is easily uneven during bending.

(II) technical scheme

In order to solve the technical problems that the plastic conduit is easy to be heated unevenly before being bent and the surface of a bent part is easy to be uneven during bending, the invention provides the following technical scheme:

a plastic conduit pipe bending device comprises a device main body, a positioning mechanism, a plastic conduit pipe, a heating mechanism, a first bending piece and a second bending piece, wherein a workbench is arranged on the device main body, the positioning mechanism is respectively arranged on two sides of the surface of the workbench, and the positioning mechanism is used for positioning and clamping the plastic conduit pipe and driving the plastic conduit pipe to move;

the through-hole has been seted up to the workstation surface, hydraulic elevator is installed to equipment main part lower extreme, the hydraulic elevator top is provided with a supporting bench, the supporting bench with big and activity such as through-hole cross-section is run through the through-hole, two heating mechanism sets up respectively the supporting bench with the workstation upper surface, through two the cooperation of heating mechanism is right the plastic pipe heats, first bending with the second bending sets up respectively the workstation with the supporting bench upper surface, through first bending with the second bending cooperation is right the plastic pipe is bent and is stereotyped.

Preferably, both sides of the upper surface of the workbench are respectively provided with an electric slide rail and a driving box, the electric slide rails are arranged into a linear part and an arc part, the positioning mechanisms are respectively assembled on the electric slide rails, and the driving box is connected with the positioning mechanisms through electric signals;

the positioning mechanism comprises an electric slider, a lower positioning sleeve and an upper positioning sleeve, the lower positioning sleeve is arranged at the upper end of the electric slider, the electric slider is assembled on the electric slide rail in a sliding manner, the inner side surface of the lower positioning sleeve is attached to the lower side of the surface of the plastic conduit, and the inner side surface of the upper positioning sleeve is attached to the upper side of the surface of the plastic conduit.

Preferably, the lower locating sleeve and the upper locating sleeve are respectively provided with a matched buckle structure at two ends, the outer sides of two ends of the lower locating sleeve and the upper locating sleeve are respectively provided with a joint, screw holes are formed in the surfaces of the joints, and the corresponding two screw holes are connected through a locating bolt.

Preferably, a base and a rotating block are arranged at the joint of the electric sliding block and the lower positioning sleeve, the lower end of the base is fixedly connected with the top of the electric sliding block, the upper end of the rotating block is fixedly connected with the bottom of the lower positioning sleeve, and the rotating block is in running fit with the base.

Preferably, heating mechanism includes heating cabinet casing, arc connector, netted heating wire, vent, air-blast device, the arc connector has been seted up to heating cabinet casing one side, netted heating wire sets up arc connector department, the heating cabinet casing upper and lower surface and side have been seted up respectively the vent, air-blast device sets up the heating cabinet casing outside just passes through the vent acts on netted heating wire.

Preferably, the first bending part is provided with a first support frame on the outer side, the two ends of the first support frame are respectively fixedly connected with the outer surface of the first bending part and the upper surface of the support table, the second bending part is provided with a second support frame on the outer side, and the two ends of the second support frame are respectively fixedly connected with the outer surface of the second bending part and the upper surface of the workbench.

Preferably, the first bending piece and the second bending piece medial surface set up respectively to with the required smooth curved surface that matches of state of bending of plastic pipe, first bending piece with first cavity and second cavity have been seted up respectively to the second bending piece inside, be provided with the water tank on the workstation, be provided with refrigerating plant in the water tank, first cavity with it spirals respectively to be provided with first water pipe and second water pipe in the second cavity, first water pipe with the both ends of second water pipe extend respectively to inside the water tank, just first water pipe with be provided with the circulating pump on the second water pipe respectively.

Preferably, the hydraulic lift upper end is provided with the platform, spacing groove and motor mounting groove have been seted up on the platform surface, brace table upper surface fixed connection has the slider, the slider with spacing inslot wall sliding fit, the spacing inslot portion is provided with the threaded rod, the threaded rod with the slider passes through screw-thread fit, the inside motor that is provided with of motor mounting groove, threaded rod one end runs through the lateral wall of spacing groove and with motor fixed connection.

Preferably, the equipment main body is provided with a control system, and the control system is connected with the hydraulic lifter, the heating mechanism, the driving box, the motor and the circulating pump through electric signals.

(III) advantageous effects

Compared with the prior art, the invention provides plastic conduit pipe bending equipment, which has the following beneficial effects:

1. this plastic pipe return bend equipment makes the plastic pipe parcel fold the space that forms at two heating mechanism through removing heating mechanism in, the part parcel of waiting to bend of plastic pipe is in the drum region that two netted heating wires formed, through heating netted heating wire, the air-blast device is air supply at the uniform velocity, can see through the vent evenly blow to the plastic pipe surface with the heat that netted heating wire sent, heat the plastic pipe, because the plastic pipe surface is not direct and heating device contact, can not lead to the fact the damage to the plastic pipe surface, guarantee the homogeneity of heating.

2. This plastic pipe return bend equipment, move simultaneously through motor and drive case, drive first bending and electronic slider and remove simultaneously, electronic slider slides to the arc part of electronic slide rail, be close to the second bending along with first bending until closing up, the plastic pipe part of heat softening is squeezed into between the medial surface of first bending and second bending, and the medial surface of plastic pipe surface and first bending and second bending closely laminates, make the smooth symmetrical in bending part surface, the inside comdenstion water of water tank circulates in first water pipe and second water pipe through the circulating pump respectively, make and keep certain low temperature environment in first cavity and the second cavity, and then the plastic pipe of bending the inboard of first bending and second bending cools off the design fast, accomplish the design operation of bending.

3. This plastic pipe return bend equipment drives the threaded rod through the motor and rotates, drives the slider and slides along the inner wall of spacing groove under the spacing of spacing groove, drives a supporting bench linear movement, and then can drive the heating mechanism who sets up on a supporting bench and remove to and fold with the heating mechanism who sets up on the workstation, heat the plastic pipe, perhaps drive the first piece of bending that sets up on a supporting bench and set up the second piece of bending on the workstation and fold, bend the design to the plastic pipe.

4. This plastic pipe return bend equipment slides with the constant speed through the electronic slider of drive case drive along electronic slide rail, and then drives the plastic pipe through lower position sleeve and last position sleeve and remove to the cooperation heating and the design operation of bending.

5. This plastic pipe return bend equipment carries out dual fixed to position sleeve and last position sleeve down through buckle structure and positioning bolt, makes position sleeve and last position sleeve keep the stability of location when convenient to detach down.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural diagram of the main body of the apparatus of the present invention;

FIG. 3 is a top view of the present invention prior to bending;

FIG. 4 is a top view of the present invention in a bent state;

FIG. 5 is an exploded view of the hydraulic lift and support table of the present invention;

FIG. 6 is an exploded view of the positioning mechanism of the present invention;

FIG. 7 is a schematic cross-sectional view of a first bending element and a second bending element of the present invention;

fig. 8 is an exploded view of the heating mechanism of the present invention.

In the figure: 1. an apparatus main body; 2. a work table; 3. a positioning mechanism; 4. a plastic conduit; 5. a through hole; 6. a hydraulic lift; 7. a support table; 8. a heating mechanism; 9. a first bending member; 10. a second bending member; 11. an electric slide rail; 12. a drive box; 13. an electric slider; 14. a lower positioning sleeve; 15. mounting a positioning sleeve; 16. a buckle structure; 17. a joint; 18. a screw hole; 19. positioning the bolt; 20. a base; 21. rotating the block; 22. a heating box housing; 23. an arc-shaped connector; 24. a mesh-like heating wire; 25. a vent; 26. a blower device; 27. a first support frame; 28. a second support frame; 29. a first cavity; 30. a second cavity; 31. a water tank; 32. a first water pipe; 33. a second water pipe; 34. a platform; 35. a limiting groove; 36. a motor mounting groove; 37. a slider; 38. a threaded rod; 39. a motor; 40. and (5) controlling the system.

Detailed Description

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

Referring to fig. 1-8, a plastic conduit pipe bending apparatus includes an apparatus main body 1, a positioning mechanism 3, a plastic conduit pipe 4, a heating mechanism 8, a first bending member 9, and a second bending member 10, wherein the apparatus main body 1 is provided with a worktable 2, the positioning mechanisms 3 are respectively disposed on two sides of the surface of the worktable 2, and the positioning mechanisms 3 are used for positioning and clamping the plastic conduit pipe 4 and driving the plastic conduit pipe 4 to move;

through-hole 5 has been seted up on 2 surfaces of workstation, hydraulic elevator 6 is installed to 1 lower extreme of equipment main part, 6 tops of hydraulic elevator are provided with brace table 7, brace table 7 runs through-hole 5 with big and activity such as 5 cross-sections of through-hole, two heating mechanism 8 set up respectively at workstation 2 and brace table 7 upper surface, heat plastic pipe 4 through two 8 cooperations of heating mechanism, first piece 9 and the second of bending set up respectively at brace table 7 and 2 upper surfaces of workstation, bend the design through the cooperation of first piece 9 and the second piece 10 of bending, thereby hydraulic elevator 6 can drive brace table 7 and go up and down, and then drive the heating mechanism 8 and the first 9 of bending that set up on brace table 7 and go up and down, cause the hindrance to plastic pipe 4 when avoiding positioning mechanism 3 drive plastic pipe 4 to remove.

Furthermore, two sides of the upper surface of the workbench 2 are respectively provided with an electric slide rail 11 and a driving box 12, the electric slide rail 11 is arranged into a linear part and an arc part, the layout of the electric slide rail 11 corresponds to the movable tracks at two ends of the plastic guide pipe 4 when the first bending part 9 and the second bending part 10 bend and shape the plastic guide pipe 4, the positioning mechanisms 3 are respectively assembled on the electric slide rails 11, and the driving box 12 is connected with the positioning mechanisms 3 through electric signals, so that the driving box 12 can drive the positioning mechanisms 3 to slide along the electric slide rails 11 at a certain speed;

positioning mechanism 3 includes electronic slider 13, lower position sleeve 14 and last position sleeve 15, lower position sleeve 14 sets up in electronic slider 13 upper end, electronic slider 13 slides and assembles on

electronic slide rail

11, 14 medial surfaces of lower position sleeve and the laminating of 4 surperficial downside of plastic pipe, go up 15 medial surfaces of position sleeve and the laminating of 4 surperficial upsides of plastic pipe, thereby carry out the centre gripping location to plastic pipe 4 through position sleeve 14 and last position sleeve 15 down, and then electronic slider 13 can drive plastic pipe 4 along the electronic slide rail 11 slides and remove, go on with the cooperation heating and bending.

Further, the lower locating sleeve 14 and the upper locating sleeve 15 are provided with matched buckle structures 16 at two ends respectively, the outer sides of the two ends of the lower locating sleeve 14 and the upper locating sleeve 15 are provided with joints 17 respectively, screw holes 18 are formed in the surfaces of the joints 17, and the two corresponding screw holes 18 are connected through locating bolts 19, so that the lower locating sleeve 14 and the upper locating sleeve 15 are doubly fixed through the buckle structures 16 and the locating bolts 19, and the lower locating sleeve 14 and the upper locating sleeve 15 are enabled to keep the locating stability while being convenient to detach.

Further, a base 20 and a rotating block 21 are arranged at the joint of the electric slider 13 and the lower positioning sleeve 14, the lower end of the base 20 is fixedly connected with the top of the electric slider 13, the upper end of the rotating block 21 is fixedly connected with the bottom of the lower positioning sleeve 14, the rotating block 21 is in rotating fit with the base 20, and when the electric slider 13 slides to the arc-shaped part of the electric slide rail 11, the lower positioning sleeve 14 and the upper positioning sleeve 15 can automatically rotate along with the bending of the plastic guide pipe 4 to adjust the direction under the rotating fit of the rotating block 21 and the base 20.

Further, the heating mechanism 8 comprises a heating box shell 22, an arc-shaped connecting port 23, a reticular heating wire 24, ventilation openings 25 and a blower device 26, the arc-shaped connecting port 23 is formed in one side of the heating box shell 22, the reticular heating wire 24 is arranged at the arc-shaped connecting port 23, the ventilation openings 25 are respectively formed in the upper surface, the lower surface and the side surface of the heating box shell 22, the blower device 26 is arranged outside the heating box shell 22 and acts on the reticular heating wire 24 through the ventilation openings 25, so that the two heating mechanisms 8 on the workbench 2 and the support table 7 are folded together, when the part to be bent of the plastic conduit 4 is wrapped in a cylinder space formed by the two reticular heating wires 24, the blower device 26 heats the reticular heating wire 24 at a constant speed, and can uniformly blow heat emitted by the reticular heating wire 24 to the surface of the plastic conduit 4 through the ventilation openings 25 to heat the plastic conduit 4, the uniformity of heating can be ensured.

Furthermore, a first supporting frame 27 is arranged on the outer side of the first bending part 9, two ends of the first supporting frame 27 are fixedly connected with the outer surface of the first bending part 9 and the upper surface of the supporting table 7 respectively, a second supporting frame 28 is arranged on the outer side of the second bending part 10, two ends of the second supporting frame 28 are fixedly connected with the outer surface of the second bending part 10 and the upper surface of the workbench 2 respectively, and the first bending part 9 and the second bending part 10 are supported through the first supporting frame 27 and the second supporting frame 28 respectively.

Furthermore, the inner side surfaces of the first bending part 9 and the second bending part 10 are respectively provided with a smooth curved surface which is matched with the plastic conduit 4 in a bending state, the first cavity 29 and the second cavity 30 are respectively arranged inside the first bending part 9 and the second bending part 10, the workbench 2 is provided with a water tank 31, a refrigerating device is arranged in the water tank 31 and can ensure that condensed water in the water tank 31 keeps a certain low temperature, so as to ensure the cooling effect, a first water pipe 32 and a second water pipe 33 are respectively arranged in the first cavity 29 and the second cavity 30 in a spiral manner, two ends of the first water pipe 32 and the second water pipe 33 respectively extend into the water tank 31, and circulating pumps are respectively arranged on the first water pipe 32 and the second water pipe 33, so that when the positioning mechanism 3 drives the heated plastic conduit 4 to slide to the front side of the second bending part 10, the first bending part 9 approaches the second bending part 10 and is folded, the 4 parts of the plastic pipe that heats and softens are squeezed into between the medial surface of the first piece of bending 9 and the second piece of bending 10, and the 4 surfaces of plastic pipe closely laminate with the medial surface of the first piece of bending 9 and the second piece of bending 10, the smooth symmetrical surface of the part of bending, the inside comdenstion water of water tank 31 circulates in first water pipe 32 and second water pipe 33 through the circulating pump respectively, make and keep certain low temperature environment in first cavity 29 and the second cavity 30, and then to the plastic pipe 4 rapid cooling design of the inboard bending of the first piece of bending 9 and the second piece of bending 10. In addition, during specific application, the heating area of the plastic conduit 4 is completely wrapped inside the first bending part 9 and the second bending part 10, and the contact parts of the two ends of the first bending part 9 and the second bending part 10 and the plastic conduit 4 are heating parts.

Further, a platform 34 is arranged at the upper end of the hydraulic elevator 6, a limiting groove 35 and a motor mounting groove 36 are arranged on the surface of the platform 34, a sliding block 37 is fixedly connected to the upper surface of the supporting table 7, the sliding block 37 is in sliding fit with the inner wall of the limiting groove 35, a threaded rod 38 is arranged inside the limiting groove 35, the threaded rod 38 is in threaded fit with the sliding block 37, a motor 39 is arranged inside the motor mounting groove 36, one end of the threaded rod 38 penetrates through the side wall of the limiting groove 35 and is fixedly connected with the motor 39, so that the motor 39 can drive the threaded rod 38 to rotate, the sliding block 37 is driven to slide along the inner wall of the limiting groove 35 under the limiting of the limiting groove 35 to drive the supporting table 7 to linearly move, and further can drive the heating mechanism 8 arranged on the supporting table 7 to move to be folded with the heating mechanism 8 arranged on the working table 2 to heat the plastic guide pipe 4 or drive the first folding piece 9 arranged on the supporting table 7 and the second folding piece 10 arranged on the working table 2 to be folded, and bending and shaping the plastic guide pipe 4.

Furthermore, the main body 1 of the device is provided with a control system 40, the control system 40 is connected with the hydraulic lifter 6, the heating mechanism 8, the driving box 12, the motor 39 and the circulating pump through electric signals, and the control system 40 controls the hydraulic lifter 6, the heating mechanism 8, the driving box 12, the motor 39 and the circulating pump to operate in a matched mode.

The working principle is as follows: when the plastic guide pipe bending machine is used, two ends of a plastic guide pipe 4 to be bent are respectively placed on the lower positioning sleeves 14, the upper positioning sleeves 15 are respectively installed at the upper ends of the corresponding lower positioning sleeves 14 through the buckle structures 16, and then the plastic guide pipe 4 is positioned through the positioning bolts 19, so that the plastic guide pipe 4 is stably clamped, the hydraulic lifter 6 is started, the supporting table 7 is driven to ascend to the highest position, and the heating mechanism 8 and the first bending piece 9 on the supporting table 7 are respectively consistent with the heating mechanism 8 and the second bending piece 10 on the workbench 2 in height;

starting a motor 39, wherein the motor 39 drives a threaded rod 38 to rotate, drives a sliding block 37 to slide along the inner wall of the limiting groove 35 under the limiting action of the limiting groove 35, drives the supporting table 7 to linearly move, enables a heating mechanism 8 arranged on the supporting table 7 to move to be folded with the heating mechanism 8 arranged on the workbench 2, heats the reticular electric heating wires 24 when the part to be bent of the plastic conduit 4 is wrapped in a cylindrical space formed by the two reticular electric heating wires 24, and a blower 26 supplies air at a constant speed through a ventilation opening 25, uniformly blows heat emitted by the reticular electric heating wires 24 to the surface of the plastic conduit 4, and uniformly heats the plastic conduit 4;

after heating for a certain time, the motor 39 drives the heating mechanism 8 to move to the original position, and the hydraulic lifter 6 drives the supporting table 7 to descend to the lowest position, and at the moment, the heights of the heating mechanism 8 and the first bending piece 9 on the supporting table 7 are both lower than the surface of the workbench 2, so that the plastic guide pipe 4 cannot be hindered from moving; the electric slide block 13 is driven by the driving box 12 to slide along the electric slide rail 11 at a certain speed, so that the heated plastic guide pipe 4 is driven to move, the plastic guide pipe 4 stops moving when moving to the front side of the second bending part 10, and the hydraulic lifter 6 drives the supporting table 7 to ascend to the highest position;

the motor 39 and the driving box 12 start to operate simultaneously, drive the first bending part 9 and the electric slider 13 to move simultaneously, the electric slider 13 slides to the arc-shaped part of the electric sliding rail 11, the first bending part 9 is close to the second bending part 10 until the first bending part is closed, the softened plastic conduit 4 is squeezed between the inner sides of the first bending part 9 and the second bending part 10, the surface of the plastic conduit 4 is tightly attached to the inner sides of the first bending part 9 and the second bending part 10, the surface of the bending part is smooth and uniform, the condensed water in the water tank 31 circulates in the first water pipe 32 and the second water pipe 33 through the circulating pump respectively, so that a certain low-temperature environment is kept in the first cavity 29 and the second cavity 30, and the plastic conduit 4 bent at the inner sides of the first bending part 9 and the second bending part 10 is cooled and shaped quickly, and the bending operation is completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a plastic pipe return bend equipment, includes equipment main part (1), positioning mechanism (3), plastic pipe (4), heating mechanism (8), first bending (9), second bending (10), its characterized in that: the device comprises an equipment main body (1), wherein a workbench (2) is arranged on the equipment main body (1), positioning mechanisms (3) are respectively arranged on two sides of the surface of the workbench (2), and the positioning mechanisms (3) are used for positioning and clamping the plastic guide pipe (4) and driving the plastic guide pipe (4) to move;

through-hole (5) have been seted up on workstation (2) surface, hydraulic lift (6) are installed to equipment main part (1) lower extreme, hydraulic lift (6) top is provided with brace table (7), brace table (7) with big and activity such as through-hole (5) cross-section is run through-hole (5), two heating mechanism (8) set up respectively workstation (2) with brace table (7) upper surface, through two heating mechanism (8) cooperation is right plastic pipe (4) heat, first bending (9) with second bending (10) set up respectively brace table (7) with workstation (2) upper surface, through first bending (9) with second bending (10) cooperation is right plastic pipe (4) are bent and are stereotyped.

2. The plastic conduit elbow device according to claim 1, wherein: an electric sliding rail (11) and a driving box (12) are respectively arranged on two sides of the upper surface of the workbench (2), the electric sliding rail (11) is arranged into a linear part and an arc part, the positioning mechanisms (3) are respectively assembled on the electric sliding rail (11), and the driving box (12) is connected with the positioning mechanisms (3) through electric signals;

positioning mechanism (3) include electronic slider (13), position sleeve (14) and go up position sleeve (15) down, position sleeve (14) set up down electronic slider (13) upper end, electronic slider (13) sliding assembly is in on electronic slide rail (11), position sleeve (14) medial surface down with plastic pipe (4) surface downside laminating, go up position sleeve (15) medial surface with plastic pipe (4) surface upside laminating.

3. The plastic conduit pipe bending apparatus according to claim 2, wherein: lower position sleeve (14) with go up position sleeve (15) both ends and be provided with assorted buckle structure (16) respectively, position sleeve (14) down with go up position sleeve (15) both ends outside and be provided with joint (17) respectively, screw (18) have all been seted up on joint (17) surface, and two that correspond connect through positioning bolt (19) between screw (18).

4. The plastic conduit pipe bending apparatus according to claim 2, wherein: electric slider (13) with position sleeve (14) junction is provided with base (20) and turning block (21) down, base (20) lower extreme with electric slider (13) top fixed connection, turning block (21) upper end with position sleeve (14) bottom fixed connection down, turning block (21) with base (20) normal running fit.

5. The plastic conduit elbow device according to claim 1, wherein: heating mechanism (8) are including heating case casing (22), arc connector (23), netted heating wire (24), vent (25), air-blast device (26), arc connector (23) have been seted up to heating case casing (22) one side, netted heating wire (24) set up arc connector (23) department, have seted up respectively on heating case casing (22) upper and lower surface and side vent (25), air-blast device (26) set up the heating case casing (22) outside just passes through vent (25) act on netted heating wire (24).

6. The plastic conduit elbow device according to claim 1, wherein: the utility model discloses a folding table, including first bending piece (9), first support frame (27) both ends respectively with first bending piece (9) surface with support bench (7) upper surface fixed connection, the second bending piece (10) outside is provided with second support frame (28), second support frame (28) both ends respectively with the second bending piece (10) surface with workstation (2) upper surface fixed connection.

7. The plastic conduit pipe bending apparatus according to claim 2, wherein: first bending (9) with second bending (10) medial surface set respectively with the required smooth curved surface that the state matches of bending of plastic pipe (4), first bending (9) with first cavity (29) and second cavity (30) have been seted up respectively to second bending (10) inside, be provided with water tank (31) on workstation (2), be provided with refrigerating plant in water tank (31), first cavity (29) with it is provided with first water pipe (32) and second water pipe (33) to spiral respectively in second cavity (30), first water pipe (32) with the both ends of second water pipe (33) extend to respectively inside water tank (31), just first water pipe (32) with be provided with the circulating pump on second water pipe (33) respectively.

8. The plastic conduit elbow device according to claim 7, wherein: hydraulic lift (6) upper end is provided with platform (34), spacing groove (35) and motor mounting groove (36) have been seted up on platform (34) surface, fixed surface is connected with slider (37) on supporting bench (7), slider (37) with spacing groove (35) inner wall sliding fit, the inside threaded rod (38) that is provided with of spacing groove (35), threaded rod (38) with slider (37) are through screw-thread fit, motor mounting groove (36) inside is provided with motor (39), threaded rod (38) one end is run through the lateral wall of spacing groove (35) and with motor (39) fixed connection.

9. The plastic conduit elbow device according to claim 8, wherein: the equipment is characterized in that a control system (40) is arranged on the equipment main body (1), and the control system (40) is connected with the hydraulic lifter (6), the heating mechanism (8), the driving box (12), the motor (39) and the circulating pump through electric signals.