Hot melt welding machine for welding the outer sheath layer of combined tees

Abstract

The invention discloses a hot melt welding machine for welding the outer sheath layer of a combined tee, comprising a frame and two parallel horizontal tracks, a left outer sheath component clamp and a right outer sheath component clamp are slidably installed between the two horizontal tracks, a clamp translation device is connected between the two clamps, and two parallel vertical tracks are also installed on the frame, the vertical tracks are vertically arranged in space with the horizontal tracks, an outer sheath side component clamp is slidably installed on the vertical tracks, and a clamp lifting device is hinged on the outer sheath side component clamp; before welding, three parts of the outer sheath layer are respectively fixed in each clamp, and the three clamps are brought together or separated by operating the clamp translation device and the clamp lifting device, so as to realize calibration, heating, and set welding in sequence, and each welding surface is heated and welded at one time, the operation is simple, the weldment is neatly aligned, the welding time is short, the damage to the tee pipe fitting is reduced to the greatest extent, and the processing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of combined tee production, in particular to a hot-melt welding machine used for welding an outer sheath layer of a combined tee. Background Art

[0002] In the pipelines currently in use, especially those used to transport hazardous media, double-layer pipes with an outer sheath layer are usually used to prevent leakage of internal hazardous media and ensure the safety of hazardous media transportation. Therefore, in the construction of double-layer pipelines, double-layer tees are one of the indispensable connecting pipes. Based on the special structure of tee pipes, and considering the production cost and processing difficulty of tee pipes, prefabricated parts are currently mostly used, and the combination tees with outer sheath layers produced by welding technology have become the first choice of many pipe fittings manufacturers.

[0003] The outer sheath layer of the three-way pipe fitting generally includes three tubular outer sheath sets, two of which are arranged linearly, and the opposite surfaces of the two linearly arranged outer sheath sets form parallel surfaces, and the other outer sheath set is arranged perpendicularly to the above two outer sheath sets, and its surface forms a vertical surface perpendicular to the two parallel surfaces, and the tops of the two parallel surfaces respectively have docking surfaces connected to the vertical surfaces. Based on the above arrangement of the outer sheath layer, a step-by-step welding method is often used in its welding with the three-way pipe fitting, that is, the horizontal surfaces of the two outer sheath sets are first heated, and quickly put on the outside of the two linear pipe sections of the three-way pipe fitting, so that the horizontal surfaces of the two outer sheath sets are quickly docked in a hot-melt state; then the vertical surface of the other outer sheath set is first heated, and quickly put on the outside of the vertical pipe section of the three-way pipe fitting, so that the vertical surface and part of the horizontal surface are quickly docked in a hot-melt state, so that the entire outer sheath layer is put on the outside of the three-way pipe fitting. It can be seen that this step-by-step welding method not only wastes processing time, but also easily damages the vertical surface of the tee pipe fitting due to operation deviation. In addition, the hot melt welding machine currently used to produce the combined tee has a relatively complex structure and high production cost. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a hot melt welding machine for welding the outer sheath layer of a combined tee, which is simple to operate, has neat hot melt welding parts alignment, can be welded and formed in one time, and has a short process time.

[0005] To solve the above technical problems, the technical solution of the present invention is: a hot melt welding machine for welding the outer sheath layer of a combined tee, comprising a frame, two parallel horizontal rails are installed on the frame, an outer sheath left component clamp and an outer sheath right component clamp are slidably installed between the two horizontal rails, and the outer sheath left component clamp and the outer sheath right component clamp are relatively coaxially arranged, a clamp translation device is connected between the outer sheath left component clamp and the outer sheath right component clamp, and two parallel vertical rails are also installed on the frame, the vertical rails are arranged vertically in space with the horizontal rails, an outer sheath side component clamp is slidably installed on the vertical rails, and a clamp lifting device is hinged on the outer sheath side component clamp.

[0006] As a preferred technical solution, the outer sheath left component clamp includes a left component clamp base, and horizontal rail through holes are provided at both ends of the left component clamp base and cooperate with the two horizontal rail sliding sets. A left component clamp top seat is detachably mounted on the left component clamp base, and clamping arc surfaces are respectively formed on the opposite surfaces of the left component clamp base and the left component clamp top seat; the outer sheath left component clamp has the same structure as the outer sheath right component clamp.

[0007] As a preferred technical solution, the outer sheath side component clamp includes a side component clamp holder which is slidably mounted corresponding to the two vertical rails, and a vertical rail through hole which cooperates with the vertical rail is provided through the side component clamp holder. The docking ends of the two side component clamp holders are detachably connected, and mounting arc surfaces are respectively formed on the opposite surfaces of the two side component clamp holders, and the central axes of the two mounting arc surfaces are spatially vertically arranged with the central axes of the two clamping arc surfaces.

[0008] As a preferred technical solution, each of the clamping arc surfaces and each of the hugging arc surfaces are respectively provided with a removable clamping pad.

[0009] As a preferred technical solution, the clamping pad is configured as a detachable layered arc plate structure.

[0010] As a preferred technical solution, the clamp translation device includes a clamp translation operating rod rotatably installed on the outer sheath left part clamp, and a clamp translation connecting rod rotatably installed on the outer sheath right part clamp, and the ends of the clamp translation operating rod and the clamp translation connecting rod extend relative to each other and are hinged; the clamp lifting device includes a clamp lifting operating rod installed on the outer sheath side part clamp.

[0011] As a preferred technical solution, the frame includes a frame-shaped base frame, on which relatively arranged vertical supports of the clamp are fixedly mounted, and the horizontal rail is correspondingly mounted between the relatively arranged vertical supports of the clamp.

[0012] As a preferred technical solution, the vertical rails are respectively arranged on the base frame outside the horizontal rails.

[0013] As a preferred technical solution, a combined welding tool is detachably provided on the two horizontal rails, and the combined welding tool includes a vertical surface heating plate arranged corresponding to the outer sheath side component clamp, and a vertical surface heating wire is clamped in the vertical surface heating plate, and a parallel surface heating plate is arranged corresponding to the outer sheath left component clamp and the outer sheath right component clamp, the parallel surface heating plate is vertically connected to the surface of the vertical surface heating plate, and a parallel surface heating wire is clamped in the parallel surface heating plate, and the parallel surface heating wire is electrically connected to the vertical surface heating wire.

[0014] As an improvement to the above technical solution, the vertical surface heating plate is set as a circular ring plate; the parallel surface heating plate is also set as a circular ring plate, and the center line of the parallel surface heating plate passes through the center of the vertical surface heating plate.

[0015] Due to the adoption of the above-mentioned technical scheme, a hot melt welding machine for welding the outer sheath layer of a combined tee includes a frame, two parallel horizontal rails are installed on the frame, an outer sheath left component clamp and an outer sheath right component clamp are slidably installed between the two horizontal rails, and the outer sheath left component clamp and the outer sheath right component clamp are relatively coaxially arranged, a clamp translation device is connected between the outer sheath left component clamp and the outer sheath right component clamp, and two parallel vertical rails are also installed on the frame, the vertical rails are arranged vertically in space with the horizontal rails, an outer sheath side component clamp is slidably installed on the vertical rails, and a clamp lifting device is hinged on the outer sheath side component clamp The present invention has the following beneficial effects: before welding, the three parts of the outer sheath layer are respectively fixed in the outer sheath left component clamp, the outer sheath right component clamp and the outer sheath side component clamp, and the three clamps are controlled to move closer and farther apart by operating the clamp translation device and the clamp lifting device. The welding surface is calibrated by the initial approach, and the three parts of the outer sheath layer are brought into contact with the heating plate by the secondary approach to achieve heating of the welding surface. Before the third approach, the heating plate is replaced by the three-way pipe fitting, and the outer sheath layer and the three-way pipe fitting are assembled by the three-way approach, and each welding surface is heated and welded at one time, the operation is simple, the weldment is neatly aligned, the welding time is short, the damage to the three-way pipe fitting is minimized, and the processing efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings are intended only to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0017] Figure 1 Schematic diagram of the cross-sectional structure of the outer sheath layer of this embodiment;

[0018] Figure 2 is a schematic cross-sectional structure diagram of the welding surface of the outer sheath layer in the heating state of the present embodiment;

[0019] Figure 3 Schematic diagram of the cross-sectional structure of the combined tee of this embodiment;

[0020] Figure 4 is a schematic structural diagram of an embodiment of the present invention;

[0021] Figure 5 It is a structural schematic diagram of another aspect of an embodiment of the present invention;

[0022] Figure 6 It is a structural schematic diagram of an outer sheath left component clamp or an outer sheath right component clamp according to an embodiment of the present invention;

[0023] Figure 7 yes Figure 6 Schematic diagram of the cross-sectional structure along the AA direction;

[0024] Figure 8 yes Figure 6 Schematic diagram of the cross-sectional structure along the BB direction;

[0025] Fig. 9 is a schematic structural diagram of an outer sheath side component clamp according to an embodiment of the present invention;

[0026] Fig.10 It is a schematic diagram of the structure of a combined welding tool according to an embodiment of the present invention;

[0027] Fig.11 yes Fig.10 Schematic diagram of the cross-sectional structure in the CC direction;

[0028] Fig.12 Schematic diagram of the placement state of the combined welding tool according to the embodiment of the present invention;

[0029] Fig.13 is a schematic diagram of the use status of an embodiment of the present invention;

[0030] In the figure: 1- tee pipe fitting; 2- parallel surface outer sheath left part; 3- parallel surface outer sheath right part; 4- vertical surface outer sheath side part; 5- parallel surface; 6- vertical surface; 7- docking surface; 8- bottom frame; 9- fixture vertical support; 10- horizontal track; 11- outer sheath left part fixture; 111- left part fixture base; 112- horizontal track through hole; 113- left part fixture top seat; 114- fixture top seat mounting hole; 115- fastening bolt channel; 116- fastening bolt ; 117-pin; 12-outer sheath right part clamp; 13-clamp translation operating rod; 14-clamp translation linkage rod; 15-vertical track; 16-outer sheath side part clamp; 161-side part clamp holder; 162-vertical track through hole; 17-clamping pad; 18-clamp lifting operating rod; 19-hook; 20-combination welding tool; 201-vertical surface heating plate; 202-vertical surface heating wire; 203-parallel surface heating plate; 204-parallel surface heating wire. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention are described only by way of illustration. Needless to say, those of ordinary skill in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, the combined tee includes a tee pipe fitting 1 and an outer sheath layer sleeved on the outside of the tee pipe fitting 1. Affected by the special structure of the tee pipe fitting 1, the outer sheath layer is composed of three independent parts before the combination process, namely a parallel plane outer sheath left component 2, a parallel plane outer sheath right component 3 and a vertical plane outer sheath side component 4, and all three are tubular structures, wherein the parallel plane outer sheath left component 2 and the parallel plane outer sheath right component 3 are coaxially arranged, the axis of the vertical plane outer sheath side component 4 is perpendicular to the axes of the above two, the opposite surfaces of the parallel plane outer sheath left component 2 and the parallel plane outer sheath right component 3 form a parallel plane 5, the end face of the vertical plane outer sheath side component 4 is a vertical plane 6 perpendicular to the two parallel planes 5, and the top ends of the two parallel planes 5 are respectively formed with docking surfaces 7 for connecting with the vertical plane 6. The hot melt welding machine described in this embodiment is specially used to hot melt weld the parallel surface outer sheath left component 2, the parallel surface outer sheath right component 3 and the vertical surface outer sheath side component 4 on the outside of the three-way pipe fitting 1, that is, to achieve the hot melt sealing connection between the two parallel surfaces 5, the vertical surface 6 and the docking surface 7, and finally form a complete combined tee.

[0033] like Figure 4 and Figure 5 As shown, a hot melt welding machine for welding the outer sheath layer of a combined tee includes a frame, wherein the frame includes a base frame 8 of a frame-shaped structure welded by square steel, and two parallel horizontal rails 10 are installed on the frame. Relatively opposite clamp vertical supports 9 are fixedly installed on the base frame 8, and the horizontal rails 10 are correspondingly installed between the relatively opposite clamp vertical supports 9, that is, the installation of the horizontal rails 10 is realized through the clamp vertical supports 9.

[0034] An outer sheath left component fixture 11 and an outer sheath right component fixture 12 are slidably mounted between the two horizontal rails 10, and the outer sheath left component fixture 11 and the outer sheath right component fixture 12 are arranged coaxially relative to each other. When in use, the parallel surface outer sheath left component 2 is first clamped and fixed in the outer sheath left component fixture 11, and the parallel surface outer sheath right component 3 is clamped and fixed in the outer sheath right component fixture 12, so that the parallel surfaces 5 formed by the two are opposite to each other, so as to facilitate simultaneous heating of the two end surfaces.

[0035] like Figure 6 As shown, in this embodiment, the outer sheath left component clamp 11 includes a left component clamp base 111, and horizontal rail through holes 112 are provided at both ends of the left component clamp base 111 to cooperate with the two horizontal rails 10 sliding sets. A left component clamp top seat 113 is detachably mounted on the left component clamp base 111, and clamping arc surfaces are respectively formed on the opposite surfaces of the left component clamp base 111 and the left component clamp top seat 113, which are used to embrace and clamp the parallel surface outer sheath left component 2, thereby maximizing the contact area between the clamp and the component, thereby improving the firmness of the component clamping.

[0036] like Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the left component fixture top seat 113 is partially embedded in the left component fixture base 111, and a fixture top seat mounting hole 114 is provided at the embedded portion, penetrating the left component fixture base 111 and the left component fixture top seat 113, and a fastening bolt channel 115 is provided on the left component fixture top seat 113, which is perpendicular to and connected to the fixture top seat mounting hole 114. When in use, the fastening bolt 116 is inserted into the fastening bolt channel 115, and the pin 117 is inserted into the fixture top seat mounting hole 114 and passed through the fastening bolt 116, so as to realize the installation of the left component fixture base 111 and the left component fixture top seat 113. In order to simplify the operation process, the opposite ends of the fixture top seat mounting hole 114 can be set at the two seats, and only the fastening bolt channel 115 and the fastening bolt 116 are set. The outer jacket left component fixture 11 has the same structure as the outer jacket right component fixture 12, and will not be described in detail here.

[0037] A clamp translation device is connected between the outer jacket left component clamp 11 and the outer jacket right component clamp 12 to achieve the control of the two clamps to move closer and apart. Specifically, the clamp translation device includes a clamp translation operating rod 13 rotatably mounted on the outer jacket left component clamp 11, and a clamp translation linkage rod 14 rotatably mounted on the outer jacket right component clamp 12, and the ends of the clamp translation operating rod 13 and the clamp translation linkage rod 14 are respectively extended relative to each other and hingedly arranged. When the clamp translation operating rod 13 is pressed down, the height of the hinged end thereof and the clamp translation linkage rod 14 rises. To adapt to this change, the distance between the two becomes larger, thereby realizing the separation of the outer sheath left part clamp 11 and the outer sheath right part clamp 12; when the clamp translation operating rod 13 is lifted up, the height of the hinged end thereof and the clamp translation linkage rod 14 drops. To adapt to this change, the distance between the two becomes smaller, thereby realizing the closeness of the two clamps.

[0038] The frame is also equipped with two parallel vertical rails 15, which are arranged vertically with the horizontal rails 10, and are respectively arranged on the bottom frame 8 outside the horizontal rails 10 to prevent the horizontal movement of the two clamps between the horizontal rails 10. The horizontal rails 10 and the vertical rails 15 are made of stainless steel. An outer sheath side component clamp 16 is slidably installed on the vertical rails 15, which is used to clamp and fix the vertical outer sheath side component 4, and the vertical surface 6 formed by the end of the vertical outer sheath side component 4 is arranged downward.

[0039] like Figure 1 and Fig. 9As shown, the outer sheath side component clamp 16 includes a side component clamp holder 161 which is slidably mounted corresponding to the two vertical rails 15, and a vertical rail through hole 162 which is mounted with the vertical rail 15 is provided through the side component clamp holder 161. The docking ends of the two side component clamp holders 161 are detachably connected, and mounting arc surfaces are respectively formed on the opposite surfaces of the two side component clamp holders 161. The central axes of the two mounting arc surfaces are spatially vertically arranged with the central axes of the two clamping arc surfaces, and the functions of the two are similar.

[0040] In this embodiment, each of the clamping arc surface and each of the embracing arc surface is detachably provided with a clamping pad 17, and the clamping pad 17 is arranged as a detachable layered arc plate structure. The thickness of the layered clamping pad 17 is adjustable so that it can be used for hot-melt welding with the three-way pipe fitting 1 according to the outer sheath layer of different pipe diameters. At the same time, the setting of the clamping pad 17 can increase the friction between the components of the outer sheath layer, so that the fixing effect is better. The main structures of the outer sheath left component clamp 11 and the outer sheath right component clamp 12 are respectively cast iron structures, which have high strength and long service life. The clamping pad 17 is cast aluminum, which is relatively soft in strength, which helps to protect the components of the outer sheath layer.

[0041] The outer sheath side component clamp 16 is hinged with a clamp lifting device for controlling the lifting of the outer sheath side component clamp 16 between the two vertical rails 15 to achieve the approach and separation with the outer sheath left component clamp 11 and the outer sheath right component clamp 12. The clamp lifting device includes a clamp lifting operating rod 18 installed on the outer sheath side component clamp 16, and the clamp lifting operating rod 18 can be set to be rotatably installed. When in use, the hook 19 can be used to hook the hook 19 between the clamp translation operating rod 13 and the clamp lifting operating rod 18 when each clamp is in a separated state. The hook 19 can maintain the tension on 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 side component clamp 16 has a certain weight, in order to prevent it from automatically falling due to gravity, an auxiliary tool such as a pull rope can be set on one side of the frame. When the outer sheath side component clamp 16 is moved up, it is pulled and fixed by the pull rope to facilitate the disassembly and assembly of the vertical outer sheath side component 4 and the implementation of other process steps.

[0042] like Fig.10 and Fig.11As shown, a combined welding tool 20 is detachably provided on the two horizontal rails 10, and is used to heat the parallel surface 5, the vertical surface 6 and the butt surface 7. The combined welding tool 20 comprises a vertical surface heating plate 201 corresponding to the outer jacket side component fixture 16, a vertical surface electric heating wire 202 is clamped in the vertical surface heating plate 201, and a parallel surface heating plate 203 corresponding to the outer jacket left component fixture 11 and the outer jacket right component fixture 12, the parallel surface heating plate 203 is vertically connected to the surface of the vertical surface heating plate 201, a parallel surface electric heating wire 204 is clamped in the parallel surface heating plate 203, the parallel surface electric heating wire 204 is electrically connected to the vertical surface electric heating wire 202, and its terminal is led out for connection with an external power supply. When in use, the vertical surface heating plate 201 is located between the vertical surface 6 and the docking surface 7, and the parallel surface heating plate 203 is located between the two parallel surfaces 5. Each surface is heat-melted by heating the parallel surface heating wire 204 and the vertical surface heating wire 202.

[0043] In this embodiment, the vertical surface heating plate 201 is configured as a circular ring plate, which is connected to the annular vertical surface 6 and the docking surface 7. The parallel surface heating plate 203 is also configured as a circular ring plate, and the center line of the parallel surface heating plate 203 passes through the center of the circle of the vertical surface heating plate 201. An opening is provided at the connection end between the parallel surface heating plate 203 and the vertical surface heating plate 201, and the opening is connected to the annular cavity of the vertical surface heating plate 201. The above-mentioned configuration of the vertical surface heating plate 201 and the parallel surface heating plate 203 facilitates the connection and fixation of the two, making the entire welding tool area smaller, and can reduce the laying length of the parallel surface heating wire 204 and the vertical surface heating wire 202, while reducing the amount of welding tool material, that is, saving production materials, and reducing the overall quality of the welding tool.

[0044] The vertical surface heating plate 201 and the parallel surface heating plate 203 are respectively configured as cast copper or cast aluminum plates, preferably cast aluminum, which has high thermal conductivity and short heating time, which helps to improve process efficiency. The parallel surface heating wire 204 and the vertical surface heating wire 202 are respectively configured as iron-chromium-aluminum or nickel-chromium heating wires, preferably iron-chromium-aluminum heating wires, which heat up quickly after power is turned on, which helps to save electricity. Fig.12 As shown, when in use, the parallel surface heating plate 203 can be directly placed between the two horizontal rails 10 by means of its outer annular structure, without the need to set up an additional auxiliary fixing mechanism, which helps to simplify the structure of the entire device.

[0045] Combination Figure 2 and Fig.13 As shown, the use process of this embodiment is:

[0046] Place the parallel outer sheath left part 2, the parallel outer sheath right part 3, and the vertical outer sheath side part 4 on the corresponding fixtures, adjust the thickness of the corresponding clamping pad 17, and make it cooperate with the fixture to ensure the firmness of the clamping of each part. Release the hook 19, lift the fixture translation operation rod 13, and make it cooperate with the fixture translation linkage rod 14 to achieve the approach of the outer sheath left part fixture 11 and the outer sheath right part fixture 12 until the two parallel surfaces 5 are in contact, observe and adjust the parallel outer sheath left part 2 or the parallel outer sheath right part 3 until the two parallel surfaces 5 are aligned, then press down the fixture translation operation rod 13 to separate the two fixtures, and place the combined welding tool 20.

[0047] The parallel surface heating wire 204 and the vertical surface heating wire 202 are energized to heat the vertical surface heating plate 201 and the parallel surface heating plate 203 to the required temperature, the clamp translation operating rod 13 is lifted up, and the clamp lifting operating rod 18 is pulled down at the same time, so that the end faces of the components on the three clamps are fitted with the corresponding surfaces on the combined welding tool 20, and the end faces of each component are heated and melted. When the set melting time is reached, the operating rods are operated in reverse to separate the three clamps, and the combined welding tool 20 is removed at this time.

[0048] While removing the combined welding tool 20, quickly manually hold the three-way pipe fitting 1, align its pipe openings with the components of the outer sheath layer, and at the same time lift the clamp translation operating rod 13 and pull down the clamp lifting operating rod 18, so that the three branch pipe parts of the three-way pipe fitting 1 are correspondingly fitted into the corresponding outer sheath layer components, and continue to apply force to each operating rod to make the surfaces to be welded closely contact, and after manual pressure is applied, melt and seal the connection to form the combined tee. Since this embodiment is specifically used for processing combined tees with smaller diameters, manual pressure application can fully meet the requirements of the molten connection of each welding surface.

[0049] According to the present invention, before welding, the three parts of the outer sheath layer are respectively fixed in the outer sheath left component clamp 11, the outer sheath right component clamp 12 and the outer sheath side component clamp 16. The three clamps are controlled to move closer and further apart by operating the clamp translation device and the clamp lifting device. The welding surface is calibrated by the first approach. The three parts of the outer sheath layer are brought into contact with the heating plate by the second approach to achieve heating of the welding surface. Before the third approach, the heating plate is replaced by the three-way pipe fitting 1. The outer sheath layer and the three-way pipe fitting 1 are assembled by the three approaches. Each welding surface is heated and welded at one time. The operation is simple, the weldments are neatly aligned, and the welding time is short. The damage to the three-way pipe fitting 1 is minimized, and the processing efficiency is improved.

[0050] The description of the present invention is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for particular uses.

Claims

1. A hot melt welding machine for welding the outer sheath layer of a combined tee, comprising a frame, characterized in that: The frame is provided with two parallel horizontal rails, between which a left outer sheath component clamp and a right outer sheath component clamp are slidably installed, and the left outer sheath component clamp and the right outer sheath component clamp are arranged relatively coaxially, and a clamp translation device is connected between the left outer sheath component clamp and the right outer sheath component clamp, and the frame is also provided with two parallel vertical rails, the vertical rails are arranged vertically in space with the horizontal rails, an outer sheath side component clamp is slidably installed on the vertical rails, and a clamp lifting device is hinged on the outer sheath side component clamp; The clamp translation device includes a clamp translation operating rod rotatably mounted on the outer jacket left component clamp, and a clamp translation linkage rod rotatably mounted on the outer jacket right component clamp, and the ends of the clamp translation operating rod and the clamp translation linkage rod extend relatively and are hingedly arranged; the clamp lifting device includes a clamp lifting operating rod mounted on the outer jacket side component clamp; With the help of the draw hook, when each clamp is in a separated state, the draw hook is hooked between the clamp translation operating rod and the clamp lifting operating rod, and the draw hook can maintain the pulling force on the clamp translation operating rod, so that the two clamps on the horizontal track are in a separated state.

2. The hot melt welding machine for welding the outer sheath layer of the combined tee according to claim 1, characterized in that: The outer sheath left component clamp includes a left component clamp base, and horizontal rail through holes are provided at both ends of the left component clamp base and cooperate with the two horizontal rail sliding sets. The left component clamp top seat is detachably mounted on the left component clamp base, and clamping arc surfaces are respectively formed on the opposite surfaces of the left component clamp base and the left component clamp top seat; the outer sheath left component clamp has the same structure as the outer sheath right component clamp.

3. The hot melt welding machine for welding the outer sheath layer of the combined tee according to claim 2, characterized in that: The outer sheath side component clamp includes a side component clamp holder which is slidably mounted corresponding to the two vertical rails, and a vertical rail through hole which cooperates with the vertical rail is provided through the side component clamp holder. The docking ends of the two side component clamp holders are detachably connected, and mounting arc surfaces are respectively formed on the opposite surfaces of the two side component clamp holders, and the central axes of the two mounting arc surfaces are spatially vertically arranged with the central axes of the two clamping arc surfaces.

4. The hot melt welding machine for welding the outer sheath layer of the combined tee according to claim 3, characterized in that: The surface of each of the clamping arc surfaces and the surface of each of the hugging arc surfaces are respectively provided with a clamping pad which can be detachably provided.

5. The hot melt welding machine for welding the outer sheath layer of the combined tee according to claim 4, characterized in that: The clamping pad is configured as a detachable layered arc plate structure.

6. The hot melt welding machine for welding the outer sheath layer of a combined tee according to claim 1, characterized in that: The frame comprises a frame-shaped bottom frame, on which oppositely arranged vertical supports of the clamp are fixedly mounted, and the horizontal rails are correspondingly mounted between the oppositely arranged vertical supports of the clamp.

7. The hot melt welding machine for welding the outer sheath layer of a combined tee according to claim 6, characterized in that: The vertical rails are respectively arranged on the base frames outside the horizontal rails.

8. The hot melt welding machine for welding the outer sheath layer of a combined tee according to claim 1, characterized in that: A combined welding tool is detachably provided on the two horizontal rails, and the combined welding tool includes a vertical surface heating plate arranged corresponding to the outer sheath side component clamp, and a vertical surface heating wire is clamped in the vertical surface heating plate, and a parallel surface heating plate is arranged corresponding to the outer sheath left component clamp and the outer sheath right component clamp, and the parallel surface heating plate is vertically connected to the surface of the vertical surface heating plate, and a parallel surface heating wire is clamped in the parallel surface heating plate, and the parallel surface heating wire is electrically connected to the vertical surface heating wire.

9. The hot melt welding machine for welding the outer sheath layer of a combined tee according to claim 8, characterized in that: The vertical surface heating plate is configured as a circular ring plate; the parallel surface heating plate is also configured as a circular ring plate, and the center line of the parallel surface heating plate passes through the center of the vertical surface heating plate.

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