CN113601855A - Hot melting welding machine for welding combined three-way outer sheath layer - Google Patents

Abstract

The invention discloses a hot-melting welding machine for welding a combined three-way outer sheath layer, which comprises a rack and two parallel horizontal rails, wherein an outer sheath left part clamp and an outer sheath right part clamp are slidably arranged between the two horizontal rails; before welding, three parts of the outer sheath layer are respectively and correspondingly fixed in the clamps, the three clamps are closed or separated by operating the clamp translation device and the clamp lifting device, calibration, heating and sleeving welding are sequentially realized, each welding surface is heated and welded once, the operation is simple and convenient, the welded part is aligned and neatened, the welding time is short, the damage to the tee pipe is reduced to the greatest extent, and the machining efficiency is improved.

Description

Hot melting welding machine for welding combined three-way outer sheath layer

Technical Field

The invention relates to the technical field of production of combined tee joints, in particular to a hot melting welding machine for welding an outer sheath layer of a combined tee joint.

Background

In the currently used pipelines, especially for transporting dangerous media, a double-layer pipeline with an outer sheath layer is generally adopted to prevent the leakage of the dangerous media inside and ensure the safety of the transportation of the dangerous media. Therefore in double-deck pipeline construction, double-deck tee bend is one of the necessary connecting pipe fittings, based on the special construction of tee bend pipe fitting, has considered the manufacturing cost and the processing degree of difficulty of tee bend pipe fitting simultaneously, adopts prefabricated part at present more, and the combination tee bend that has the oversheath layer through welding process production becomes the first choice of many pipe fittings producers.

The outer sheath layer of the tee pipe generally comprises three parts of tubular outer sheath pieces, wherein two outer sheath pieces are linearly arranged, the opposite surfaces of the two linearly arranged outer sheath pieces form parallel surfaces, the other outer sheath piece is vertically arranged with the two outer sheath pieces, the surface of the other outer sheath piece forms a vertical surface vertical to the two parallel surfaces, and the top ends of the two parallel surfaces are respectively provided with a butt joint surface connected with the vertical surface. Based on the arrangement mode of the outer sheath layers, a welding mode of step-by-step operation is mostly adopted in the welding of the outer sheath layers and the tee pipe fitting, namely, the horizontal planes of the two outer sheath members are heated and quickly sleeved outside two linear pipe sections of the tee pipe fitting, so that the horizontal planes of the two outer sheath members are quickly butted in a hot melting state; then, the vertical surface of the other outer sheath member is heated and quickly sleeved outside the vertical pipe section of the three-way pipe member, so that the vertical surface and part of the horizontal surface are quickly butted in a hot melting state, and the whole outer sheath layer is sleeved outside the three-way pipe member. Therefore, the step welding mode wastes processing time, the vertical surface of the three-way pipe fitting is easy to be damaged due to operation deviation, and in addition, the existing hot melting welding machine for producing the combined tee joint is complex in structure and high in production cost.

Disclosure of Invention

The invention aims to solve the technical problem of providing a hot melting welding machine for welding a combined three-way outer sheath layer, which is simple to operate, has aligned hot melting welding pieces, can be formed by one-time welding and has short process time.

In order to solve the technical problems, the technical scheme of the invention is as follows: a hot melt welding machine for welding combination tee bend oversheath layer, which comprises a frame, install two parallel arrangement's horizontal track in the frame, two slidable mounting has oversheath left part anchor clamps and oversheath right part anchor clamps between the horizontal track, just oversheath left part anchor clamps with the relative coaxial line setting of oversheath right part anchor clamps, oversheath left part anchor clamps with be connected with anchor clamps translation device between the oversheath right part anchor clamps, still install two parallel arrangement's vertical track in the frame, vertical track with the horizontal track is the space vertical arrangement, slidable mounting has oversheath side part anchor clamps on the vertical track, it has anchor clamps elevating gear to articulate on the oversheath side part anchor clamps.

As a preferred technical scheme, the outer sheath left part clamp comprises a left part clamp base, horizontal rail through holes which are matched with the two horizontal rails in a sliding sleeved mode are formed in the two ends of the left part clamp base in a penetrating mode, a left part clamp top seat is detachably mounted on the left part clamp base, and clamping arc surfaces are formed on the opposite surfaces of the left part clamp base and the left part clamp top seat respectively; the outer sheath left part clamp and the outer sheath right part clamp are consistent in structure.

As a preferred technical scheme, the outer sheath side part clamp comprises a side part clamp embracing seat which is respectively slidably sleeved and arranged corresponding to the two vertical rails, a vertical rail through hole which is matched with the vertical rails in a sleeved mode is formed in the side part clamp embracing seat in a penetrating mode, the butt joint end of the side part clamp embracing seat is detachably connected and arranged, embracing cambered surfaces are respectively formed on opposite surfaces of the side part clamp embracing seat, and the central axis of each embracing cambered surface and the central axis of each clamping cambered surface are vertically arranged in a space.

As a preferred technical scheme, clamping cushion plates are detachably arranged on the surfaces of the clamping cambered surfaces and the surfaces of the holding cambered surfaces respectively.

As a preferable technical scheme, the clamping base plate is of a detachable layered arc plate structure.

As a preferred technical scheme, the clamp translation device comprises a clamp translation operating rod rotatably mounted on the outer sheath left component clamp, and a clamp translation linkage rod rotatably mounted on the outer sheath right component clamp, wherein the clamp translation operating rod and the end part of the clamp translation linkage rod respectively extend oppositely and are hinged; the jig lifting device includes a jig lifting lever mounted on the outer sheath side member jig.

According to the preferable technical scheme, the rack comprises a bottom frame of a frame structure, opposite clamp vertical supports are fixedly mounted on the bottom frame, and the horizontal rails are correspondingly mounted between the clamp vertical supports and the opposite clamp vertical supports.

As a preferable technical scheme, the vertical rails are respectively arranged on the underframe outside the horizontal rails.

According to a preferable technical scheme, a combined welding tool is detachably arranged on the two horizontal rails, the combined welding tool comprises a vertical surface heating plate which is arranged corresponding to the outer sheath side part clamp, a vertical surface heating wire is clamped in the vertical surface heating plate, a parallel surface heating plate is arranged corresponding to the outer sheath left part clamp and the outer sheath right part clamp, the parallel surface heating plate is vertically connected to the surface of the vertical surface heating plate, a parallel surface heating wire is clamped in the parallel surface heating plate, and the parallel surface heating wire is electrically connected with the vertical surface heating wire.

As an improvement to the above technical solution, the vertical heating plate is a circular ring plate; the parallel surface heating plate is also arranged to be a circular ring plate, and the center line of the parallel surface heating plate penetrates through the circle center of the vertical surface heating plate.

By adopting the technical scheme, the hot-melting welding machine for welding the combined three-way outer sheath layer comprises a rack, wherein two parallel horizontal rails are arranged on the rack, an outer sheath left part clamp and an outer sheath right part clamp are slidably arranged between the two horizontal rails, the outer sheath left part clamp and the outer sheath right part clamp are arranged coaxially relative to each other, a clamp translation device is connected between the outer sheath left part clamp and the outer sheath right part clamp, two parallel vertical rails are also arranged on the rack, the vertical rails and the horizontal rails are arranged vertically in a space, the outer sheath side part clamp is slidably arranged on the vertical rails, and a clamp lifting device is hinged on the outer sheath side part clamp; the invention has the following beneficial effects: before welding, three parts of the outer sheath layer are respectively and correspondingly fixed in the outer sheath left part clamp, the outer sheath right part clamp and the outer sheath side part clamp, the three clamps are controlled to be close and separated through the operation clamp translation device and the clamp lifting device, the first close is carried out to calibrate the welding surface, the second close is carried out to contact the three parts of the outer sheath layer with the heating plate, the heating of the welding surface is realized, the three-way pipe fitting is used for replacing the heating plate before the third close is carried out, the outer sheath layer and the three-way pipe fitting are sleeved by carrying out the third close, each welding surface is heated and welded once, the operation is simple and convenient, the weldment is aligned and finished, the welding time is short, the damage to the three-way pipe fitting is reduced to the greatest extent, and the processing efficiency is improved.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:

FIG. 1 is a schematic cross-sectional view of an outer sheath layer according to the present embodiment;

FIG. 2 is a schematic cross-sectional view illustrating a heated welding surface of the outer sheath layer according to the present embodiment;

FIG. 3 is a schematic cross-sectional view of the combination tee of the present embodiment;

FIG. 4 is a schematic structural diagram of an embodiment of the present invention;

FIG. 5 is a schematic structural view in another direction of the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an outer sheath left component clamp or an outer sheath right component clamp according to an embodiment of the invention;

FIG. 7 is a schematic sectional view taken along the line A-A in FIG. 6;

FIG. 8 is a schematic cross-sectional view taken along line B-B of FIG. 6;

FIG. 9 is a schematic structural view of a sheath side member clamp according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a composite bonding tool according to an embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view taken along line C-C of FIG. 10;

FIG. 12 is a schematic view of a placement of a combination bonding tool according to an embodiment of the present invention;

FIG. 13 is a schematic view of a use state of an embodiment of the present invention;

in the figure: 1-a tee pipe fitting; 2-parallel out-of-plane jacket left component; 3-parallel out-of-plane jacket right component; 4-vertical plane outer sheath side member; 5-parallel plane; 6-vertical plane; 7-a butt joint face; 8-a chassis; 9-vertical support of the clamp; 10-horizontal rail; 11-outer sheath left part clamp; 111-left component clamp base; 112-horizontal rail via holes; 113-left component clamp top mount; 114-fixture top seat mounting holes; 115-fastening bolt passages; 116-a fastening bolt; 117-pin; 12-outer sheath right part clamp; 13-a gripper translation lever; 14-the fixture translating trace; 15-vertical rail; 16-an outer sheath side member clamp; 161-side member clamp embracing seat; 162-vertical rail vias; 17-clamping a base plate; 18-a clamp lifting lever; 19-pulling a hook; 20-a combination welding tool; 201-vertical plane heating plate; 202-vertical plane heating wire; 203-parallel plane heating plate; 204-parallel plane heating wire.

Detailed Description

The invention is further illustrated below with reference to the figures and examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in fig. 1, 2 and 3, the combined tee comprises a tee pipe 1 and an outer sheath layer sleeved outside the tee pipe 1, influenced by the special structure of the tee pipe 1, wherein the outer sheath layer is three independent parts before the combination process, namely a left parallel outer sheath component 2, a right parallel outer sheath component 3 and a side vertical outer sheath component 4 which are all tubular structures, wherein the parallel out-of-plane jacket left part 2 and the parallel out-of-plane jacket right part 3 are arranged coaxially, the axis of the vertical-surface outer sheath side member 4 is arranged perpendicular to the axes of the two, the opposite surfaces of the parallel out-of-plane sheath left member 2 and the parallel out-of-plane sheath right member 3 form a parallel surface 5, the end surface of the vertical-surface oversheath member 4 is a vertical surface 6 perpendicular to the two parallel surfaces 5, and abutting surfaces 7 for connecting to the vertical surface 6 are formed at the tips of the two parallel surfaces 5, respectively. The hot-melting welder described in this embodiment is specially used for hot-melting and welding the parallel out-of-plane sheath left component 2, the parallel out-of-plane sheath right component 3, and the vertical plane outer sheath side component 4 to the outside of the three-way pipe fitting 1, that is, the hot-melting sealing connection between the two parallel planes 5, the vertical plane 6, and the butt-joint plane 7 is realized, and finally, a complete combined three-way is formed.

As shown in fig. 4 and 5, a hot melt welding machine for welding combination tee bend oversheath layer, which comprises a frame, the frame includes the chassis 8 for adopting the frame structure that the square steel welding formed, install two parallel arrangement's horizontal track 10 in the frame, fixed mounting has the anchor clamps erector 9 of relative setting on the chassis 8, horizontal track 10 corresponds the installation and sets up relatively between the anchor clamps erector 9, promptly through anchor clamps erector 9 realizes horizontal track 10's installation sets up.

An outer sheath left part clamp 11 and an outer sheath right part clamp 12 are slidably mounted between the two horizontal rails 10, and the outer sheath left part clamp 11 and the outer sheath right part clamp 12 are arranged coaxially relative to each other. When the parallel outer sheath heating device is used, the parallel outer sheath left component 2 is clamped and fixed in the outer sheath left component clamp 11, the parallel outer sheath right component 3 is clamped and fixed in the outer sheath right component clamp 12, parallel surfaces 5 formed by the two components are opposite, and two end surfaces can be heated simultaneously conveniently.

As shown in fig. 6, in this embodiment, the outer sheath left part clamp 11 includes a left part clamp base 111, horizontal rail via holes 112 which are slidably fitted with the two horizontal rails 10 are formed through two ends of the left part clamp base 111, a left part clamp top base 113 is detachably mounted on the left part clamp base 111, and clamping arc surfaces are respectively formed on opposite surfaces of the left part clamp base 111 and the left part clamp top base 113, and are used for clamping the parallel outer sheath left part 2, so that a contact area between the clamp and the part is increased to the maximum extent, and thus, the clamping firmness of the part is improved.

As shown in fig. 5, 6, 7 and 8, the left part jig top 113 is partially inserted into the left part jig base 111, and a jig top mounting hole 114 is provided at the insertion portion through the left part jig base 111 and the left part jig top 113, and the left part jig top 113 is provided with a fastening bolt passage 115 which is perpendicular to and communicates with the jig top mounting hole 114. In use, a fastening bolt 116 is inserted into the fastening bolt channel 115, and the left component clamp base 111 and the left component clamp top 113 are mounted by inserting a pin 117 into the clamp top mount mounting hole 114 and passing it through the fastening bolt 116. To simplify the operation process, only the fastening bolt passage 115 and the fastening bolt 116 may be provided at opposite ends of the jig top seat mounting hole 114 provided at both seats. The outer sheath left part clamp 11 is identical in structure with the outer sheath right part clamp 12, and is not described in detail here.

And a clamp translation device is connected between the outer sheath left part clamp 11 and the outer sheath right part clamp 12 and is used for realizing the control of closing and separating between the two clamps. Specifically, the fixture translation device comprises a fixture translation operation rod 13 rotatably mounted on the outer sheath left component fixture 11, and a fixture translation linkage rod 14 rotatably mounted on the outer sheath right component fixture 12, wherein the ends of the fixture translation operation rod 13 and the fixture translation linkage rod 14 respectively extend oppositely and are hinged to each other. When the clamp translation operating rod 13 is pressed downwards, the height of the hinged end of the clamp translation linkage rod 14 is increased, and in order to adapt to the change, the distance between the clamp translation operating rod and the hinged end is increased, so that the outer sheath left component clamp 11 and the outer sheath right component clamp 12 are separated; when the clamp translation operating rod 13 is lifted up, the height of the hinged end of the clamp translation linkage rod 14 is reduced, and in order to adapt to the change, the distance between the two clamps is reduced, so that the two clamps are closed.

Still install two parallel arrangement's vertical track 15 in the frame, vertical track 15 with horizontal track 10 is the space and arranges perpendicularly, just vertical track 15 is located respectively the horizontal track 10 outside on the chassis 8, in order to avoid preventing the horizontal migration of two anchor clamps between horizontal track 10. The horizontal rail 10 and the vertical rail 15 are made of stainless steel. An outer sheath member clamp 16 is slidably mounted on the vertical rail 15, and is used for clamping and fixing the vertical-surface outer sheath member 4, and a vertical surface 6 formed by the end part of the vertical-surface outer sheath member 4 faces downwards.

As shown in fig. 1 and 9, the outer sheath side member clamp 16 includes a side member clamp embracing seat 161 slidably and fittingly arranged corresponding to the two vertical rails 15, a vertical rail through hole 162 fittingly engaged with the vertical rail 15 is formed through the side member clamp embracing seat 161, the butt end of the side member clamp embracing seat 161 is detachably connected, and embracing arc surfaces are formed on opposite surfaces of the side member clamp embracing seat 161, and the central axis of the embracing arc surfaces and the central axis of the clamping arc surfaces are spatially and vertically arranged and have similar functions.

In this embodiment, each clamping cambered surface and each holding cambered surface are detachably provided with a clamping base plate 17, the clamping base plate 17 is a detachable layered arc plate structure, and the thickness of the clamping base plates 17 arranged in layers is adjustable, so that the outer sheath layers with different pipe diameters and the tee pipe fitting 1 are welded together by hot melting. Meanwhile, the arrangement of the clamping backing plate 17 can improve the friction force between the clamping backing plate and each part of the outer sheath layer, so that the fixing effect is better. The main body structures of the outer sheath left part clamp 11 and the outer sheath right part clamp 12 are cast iron structures respectively, so that the strength is high, and the service life is long. The clamping backing plate 17 is made of cast aluminum, so that the strength is relatively soft, and the components of the outer sheath layer can be protected.

And the outer sheath part clamp 16 is hinged with a clamp lifting device and used for controlling the outer sheath part clamp 16 to lift between the two vertical rails 15 so as to realize the closing and separation with the outer sheath left part clamp 11 and the outer sheath right part clamp 12. The jig lifting and lowering means includes a jig lifting and lowering lever 18 mounted on the outer sheath side member jig 16, and the jig lifting and lowering lever 18 may be configured to be rotatably mounted. When the clamp lifting device is used, the draw hooks 19 can be used, when the clamps are in a separated state, the draw hooks 19 are hooked between the clamp translation operating rod 13 and the clamp lifting operating rod 18, and the draw hooks 19 can maintain the tension of the clamp translation operating rod 13, so that the two clamps on the horizontal rail 10 are in a separated state. Since the outer sheath member holder 16 has a certain weight, in order to prevent the outer sheath member holder from automatically falling down due to gravity, an auxiliary tool such as a pull rope may be provided on the side of the frame, and when the outer sheath member holder 16 is moved up, the outer sheath member holder is pulled and fixed by the pull rope, so that the outer sheath member 4 can be easily attached to and detached from the vertical surface, and other process steps can be easily performed.

As shown in fig. 10 and 11, a combined welding tool 20 is detachably disposed on each of the two horizontal rails 10, and is used for heating the parallel surface 5, the vertical surface 6, and the abutting surface 7. The combined welding tool 20 comprises a vertical surface heating plate 201 arranged corresponding to the outer sheath side part clamp 16, a vertical surface heating wire 202 is clamped in the vertical surface heating plate 201, a parallel surface heating plate 203 is arranged corresponding to the outer sheath left part clamp 11 and the outer sheath right part clamp 12, the parallel surface heating plate 203 is vertically connected to the surface of the vertical surface heating plate 201, a parallel surface heating wire 204 is clamped in the parallel surface heating plate 203, the parallel surface heating wire 204 is electrically connected with the vertical surface heating wire 202, and the terminal of the parallel surface heating wire 204 is led out to be connected with an external power supply. When in use, the vertical surface heating plate 201 is located between the vertical surface 6 and the butt joint surface 7, the parallel surface heating plate 203 is located between the two parallel surfaces 5, and the parallel surface heating wires 204 and the vertical surface heating wires 202 heat and fuse the surfaces.

In this embodiment, the heating plate 201 of the vertical plane is a circular ring plate, and is annular, the vertical plane 6 is butted with the butt joint surface 7, the heating plate 203 of the parallel plane is also a circular ring plate, and the center line of the heating plate 203 of the parallel plane runs through the center of the circle of the heating plate 201 of the vertical plane. The parallel surface heating plate 203 with the link of perpendicular face heating plate 201 is equipped with the opening, the opening with the ring chamber intercommunication setting of perpendicular face heating plate 201. The vertical surface heating plate 201 and the parallel surface heating plate 203 are convenient to connect and fix due to the arrangement mode, so that the whole welding tool is small in area, the laying length of the parallel surface heating wires 204 and the vertical surface heating wires 202 can be reduced, the material consumption of the welding tool is reduced, production materials are saved, and the overall quality of the welding tool can be reduced.

The vertical surface heating plate 201 and the parallel surface heating plate 203 are respectively made of cast copper or cast aluminum plates, preferably cast aluminum, high in heat conductivity and short in heating time, and contribute to improving the process efficiency. The parallel surface heating wires 204 and the vertical surface heating wires 202 are respectively provided with iron-chromium-aluminum or nickel-chromium heating wires, preferably iron-chromium-aluminum heating wires, and the heating speed is high after the heating wires are electrified, so that the electric energy is saved. As shown in fig. 12, when in use, the outer ring structure of the parallel-surface heating plate 203 is directly placed between the two horizontal rails 10, and an additional auxiliary fixing mechanism is not needed, which helps to simplify the structure of the whole equipment.

With reference to fig. 2 and fig. 13, the using process of the present embodiment is as follows:

and respectively placing the left parallel outer sheath component 2, the right parallel outer sheath component 3 and the side vertical outer sheath component 4 on corresponding clamps, and adjusting the thickness of the corresponding clamping base plate 17 to ensure that the clamping firmness of each component is ensured by matching the clamping base plate with the clamps. And (3) loosening the draw hook 19, lifting the clamp translation operating rod 13 upwards to enable the clamp translation operating rod to be matched with the clamp translation linkage rod 14 to enable the outer sheath left part clamp 11 to be close to the outer sheath right part clamp 12 until the two parallel surfaces 5 are contacted, observing and adjusting the parallel surface outer sheath left part 2 or the parallel surface outer sheath right part 3 until the two parallel surfaces 5 are aligned, then pressing the clamp translation operating rod 13 downwards to enable the two clamps to be separated, and placing the combined welding tool 20.

And electrifying the parallel surface heating wires 204 and the vertical surface heating wires 202, heating the vertical surface heating plates 201 and the parallel surface heating plates 203 to the required temperature, lifting the clamp translation operating rod 13, simultaneously pulling down the clamp lifting operating rod 18, attaching the end surfaces of the upper parts of the three clamps to the corresponding surfaces of the combined welding tool 20, heating and melting the end surfaces of the parts, reversely operating the operating rods after the set melting time is reached, separating the three clamps, and removing the combined welding tool 20.

When the combined welding tool 20 is removed, the three-way pipe fitting 1 is manually held rapidly, each pipe orifice of the three-way pipe fitting 1 is aligned with each outer sheath layer component, the clamp translation operating rod 13 is lifted up and the clamp lifting operating rod 18 is pulled down, so that three branch pipe parts of the three-way pipe fitting 1 are correspondingly sleeved into the corresponding outer sheath layer components, force is continuously applied to each operating rod, each surface needing to be welded is in close contact, and the three branch pipe parts are fused and sealed after manual pressurization to form the combined tee joint. Because the embodiment is specially used for processing the combined tee joint with a smaller diameter, the manual pressurization and force application can completely meet the requirement of fusion connection of all welding surfaces.

Three parts of an outer sheath layer are respectively and correspondingly fixed in an outer sheath left part clamp 11, an outer sheath right part clamp 12 and an outer sheath side part clamp 16 before welding, the three clamps are controlled to be closed and separated through an operation clamp translation device and a clamp lifting device, the welding surfaces are calibrated through primary closing, the three parts of the outer sheath layer are contacted with a heating plate through secondary closing, the welding surfaces are heated, the heating plate is replaced by the tee pipe 1 before the three parts are closed, the outer sheath layer and the tee pipe 1 are sleeved through the third closing, the welding surfaces are heated and welded together at one time, the operation is simple and convenient, the welded parts are aligned and finished, the welding time is short, the damage to the tee pipe 1 is reduced to the greatest extent, and the machining efficiency is improved.

The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (10)

1. A hot melt welding machine for welding combination tee bend oversheath layer, including the frame, its characterized in that: the clamp lifting device is characterized in that two parallel horizontal rails are mounted on the rack, an outer sheath left part clamp and an outer sheath right part clamp are mounted between the two horizontal rails in a sliding mode, the outer sheath left part clamp and the outer sheath right part clamp are coaxially arranged relatively, a clamp translation device is connected between the outer sheath left part clamp and the outer sheath right part clamp, two parallel vertical rails are further mounted on the rack, the vertical rails and the horizontal rails are vertically arranged in a space, an outer sheath side part clamp is mounted on the vertical rails in a sliding mode, and a clamp lifting device is hinged to the outer sheath side part clamp.

2. The thermal fusion welding machine for welding the composite three-way outer sheath layer as claimed in claim 1, wherein: the outer sheath left part clamp comprises a left part clamp base, horizontal rail through holes which are matched with the two horizontal rails in a sliding sleeved mode are formed in the two ends of the left part clamp base in a penetrating mode, a left part clamp top seat is detachably mounted on the left part clamp base, and clamping arc surfaces are formed on the opposite surfaces of the left part clamp base and the left part clamp top seat respectively; the outer sheath left part clamp and the outer sheath right part clamp are consistent in structure.

3. The thermal fusion welding machine for welding the composite three-way outer sheath layer as claimed in claim 2, wherein: the outer sheath side part clamp comprises a side part clamp embracing seat which corresponds to the two vertical rails and is respectively arranged in a sliding sleeved mode, a vertical rail through hole which is matched with the vertical rails in a sleeved mode is formed in the side part clamp embracing seat in a penetrating mode, the butt joint end of the side part clamp embracing seat is detachably connected, embracing cambered surfaces are formed on opposite surfaces of the side part clamp embracing seat respectively, and the central axis of the embracing cambered surfaces and the central axis of the clamping cambered surfaces are arranged in a spatial vertical mode.

4. A thermal fusion welding machine for welding a composite three-way outer sheath layer according to claim 3, wherein: clamping cushion plates are detachably arranged on the surfaces of the clamping cambered surfaces and the surfaces of the holding cambered surfaces respectively.

5. The thermal fusion welding machine for welding the composite three-way outer sheath layer according to claim 4, wherein: the clamping base plate is of a detachable layered arc plate structure.

6. The thermal fusion welding machine for welding the composite three-way outer sheath layer as claimed in claim 1, wherein: the clamp translation device comprises a clamp translation operating rod rotatably mounted on the outer sheath left component clamp, and a clamp translation linkage rod rotatably mounted on the outer sheath right component clamp, wherein the clamp translation operating rod and the end part of the clamp translation linkage rod respectively extend oppositely and are hinged; the jig lifting device includes a jig lifting lever mounted on the outer sheath side member jig.

7. The thermal fusion welding machine for welding the composite three-way outer sheath layer as claimed in claim 1, wherein: the frame comprises a bottom frame of a frame structure, the bottom frame is fixedly provided with clamp vertical supports which are arranged oppositely, and the horizontal rails are correspondingly arranged between the clamp vertical supports which are arranged oppositely.

8. The thermal fusion welding machine for welding the composite three-way outer sheath layer according to claim 7, wherein: the vertical rails are respectively arranged on the underframe outside the horizontal rails.

9. The thermal fusion welding machine for welding the composite three-way outer sheath layer as claimed in claim 1, wherein: the combined welding tool comprises a vertical surface heating plate which is arranged corresponding to the outer sheath side part clamp, a vertical surface heating wire is clamped in the vertical surface heating plate, a parallel surface heating plate is arranged corresponding to the outer sheath left part clamp and the outer sheath right part clamp, the parallel surface heating plate is vertically connected to the surface of the vertical surface heating plate, a parallel surface heating wire is clamped in the parallel surface heating plate, and the parallel surface heating wire is electrically connected with the vertical surface heating wire.

10. The thermal fusion welding machine for welding the composite three-way outer sheath layer as claimed in claim 9, wherein: the vertical heating plate is a circular ring plate; the parallel surface heating plate is also arranged to be a circular ring plate, and the center line of the parallel surface heating plate penetrates through the circle center of the vertical surface heating plate.

Images