Novel welding device for door and window machining

Abstract

The novel door and window machining welding device comprises a welding platform, a heating mechanism and a thermoelectric power generation module, a main positioning mechanism and a side positioning mechanism are installed at the upper end of the welding platform, the heating mechanism comprises a lifting push rod and a heating assembly, the lifting push rod is installed on the side positioning mechanism, and the heating assembly is installed on the side positioning mechanism. The heating assembly comprises a mounting seat and a heating plate, the heating plate and the main positioning mechanism are arranged at an angle of 45 degrees, a plurality of thermocouples I are fixed at the lower end of the mounting seat at equal intervals, and the thermocouples I are used for monitoring the temperature change of the heating plate in real time; the first thermocouple converts the redundant heat into electric energy, deformation of the welding position of the frame strip caused by overheating of the heating plate is avoided, and therefore the welding quality is improved. And the thermoelectric power generation module is used for collecting electric energy generated by the thermocouple I and converting the electric energy into higher voltage to be output, so that effective utilization of energy is realized.

Description

Technical Field

[0001] The present invention relates to a welding device, in particular to a novel welding device for door and window processing applied in the field of door and window processing. Background Art

[0002] Welding is a common metal processing technology. Welding technology can achieve a stable connection combination between different metal parts. There are many sources of energy for modern welding, including gas flame, arc, laser, electron beam, friction and ultrasonic. With the increase of welding processes, the welding firmness between structures is enhanced. In the production of some doors and windows, welding technology is also needed.

[0003] At present, in the welding process of plastic doors and windows, there are two welding forms, one is seamless welding, and the other is seam welding. Seamless welding is mainly for the welding of colored doors and windows, and seam welding is mainly for the welding of ordinary doors and windows. Regardless of the welding form, a four-corner welding machine is required.

[0004] For example, the specification of patent publication number CN107639842B discloses a four-corner welding machine head and welding method for plastic door and window welding, including a head base and a clamping mechanism, a milling cutter mechanism, a heating mechanism, a pressing plate mechanism and a positioning mechanism arranged on the head base, the clamping mechanism includes an upper clamp and a lower clamp vertically arranged up and down, the lower clamp has a tooling push plate, the upper clamp is connected to the clamping cylinder, the upper clamp and the lower clamp cooperate to achieve the clamping of adjacent profiles, the milling cutter mechanism performs milling processing on the end face of the profile, the heating plate of the heating mechanism heats and melts the end face of the profile, the pressing plate mechanism squeezes the weld to prevent the occurrence of weld nodules, the four-corner welding machine head and the welding method can effectively avoid the generation of weld nodules on the profile surface, inner corner and outer corner welds, solve the problem of profile aesthetics, and have low requirements on profile size, greatly reducing production costs.

[0005] Based on the above search and in combination with the prior art, it is found that in the prior art, when welding the frame strips of doors and windows, the welding device for door and window processing similar to the above-disclosed one has very high heat at the welding point, and when the heat is too high, it is easy to cause deformation of the welding point, thereby reducing the welding quality; in addition, the heating plate generally cools down naturally after heating the frame strips, resulting in heat waste. Therefore, a new type of door and window processing welding device is proposed to improve the above-mentioned problems. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that when the welding device for door and window processing in the prior art welds the frame strips of doors and windows, the welding point has very high heat, and when the heat is too high, it is easy to cause deformation of the welding point, thereby reducing the welding quality; in addition, the heating plate generally cools down naturally after heating the frame strips, resulting in heat waste.

[0007] In order to solve the above problems, the present invention provides a novel welding device for door and window processing, comprising: The welding platform has a main positioning mechanism and a side positioning mechanism installed on the upper end of the welding platform. The two side positioning mechanisms are respectively located on both sides of the main positioning mechanism and are arranged at a 90-degree angle with the main positioning mechanism; Heating mechanism, the two heating mechanisms are respectively installed on one side of the two side positioning mechanisms close to the main positioning mechanism, and the heating mechanism includes a lifting push rod and a heating assembly; The lifting push rod is installed on the side positioning mechanism, and the heating assembly includes a mounting seat and a heating plate; The mounting seat is installed at the output end of the lifting push rod, the mounting seat is vertically installed at the middle of the lower end of the mounting seat, and the heating plate and the main positioning mechanism are arranged at a 45-degree angle; A plurality of thermocouples are fixed at equal intervals at the lower end of the mounting seat, and a plurality of vertical pipe grooves are arranged at the upper end of the heating plate along its length direction. The plurality of thermocouples are inserted into the inner sides of the plurality of pipe grooves one in a one-to-one correspondence. The temperature change of the heating plate is monitored in real time by the thermocouple one. When the heat generated during welding exceeds the heat dissipation capacity of the heating plate itself, the thermocouple one converts this excess heat into electrical energy. Thermoelectric power generation module, the thermoelectric power generation module is arranged on the mounting seat and connected to the thermocouple 1. The thermoelectric power generation module collects the electric energy generated by the thermocouple 1 and converts it into a higher voltage output.

[0008] In the above-mentioned new welding device for door and window processing, the temperature change of the heating plate is monitored in real time by a thermocouple 1. When the heat generated during welding exceeds the heat dissipation capacity of the heating plate itself, the thermocouple 1 converts this excess heat into electrical energy to avoid deformation of the welding part of the frame strip caused by overheating of the heating plate, thereby improving the welding quality; and the thermoelectric power generation module is used to collect the electrical energy generated by the thermocouple 1 and convert it into a higher voltage output, thereby realizing efficient use of energy.

[0009] As a further supplement to the present application, the main positioning mechanism includes a limit push seat, a welding push rod and a clamping assembly; The clamping assembly includes a clamping push rod and a clamping plate, and the clamping plate is installed at the output end of the clamping push rod; The welding push rod is installed at the upper end of the welding platform, the limit push seat is installed at the output end of the welding push rod, and the pressing push rod is installed at the middle part of the upper end of the limit push seat through the mounting frame; The side positioning mechanism includes a limit stop, an adjustment push rod and a clamping assembly; The adjusting push rod is installed at the upper end of the welding platform, the limiting stop seat is installed at the output end of the adjusting push rod, and the pressing push rod is installed at the middle part of the upper end of the limiting stop seat through the mounting frame; The lifting push rod is installed on the side end of the limit stop seat close to the limit push seat.

[0010] As a further supplement to the present application, a cooling box is installed at the upper end of the mounting seat, and the inner side of the cooling box is filled with coolant. The upper end of thermocouple 1 passes through the mounting seat and extends to the inner side of the cooling box; the coolant can further increase the temperature difference between the two ends of thermocouple 1, thereby improving the heat-electrical energy conversion rate.

[0011] As a further supplement to the present application, a liquid inlet pipe and a liquid outlet pipe are connected to each other at the lower end of the mounting seat, and both the liquid inlet pipe and the liquid outlet pipe are connected to the inner side of the cooling box, a circulating pump is installed on the liquid inlet pipe, and a one-way valve is installed on the liquid outlet pipe; The heating plate is provided with a pipe groove 2 which is matched with the liquid inlet pipe and the liquid outlet pipe; the cooling liquid in the cooling box can be used to circulate and cool the heating plate, so as to further enhance the heat dissipation effect of the heating plate.

[0012] As a further supplement to the present application, a dispersion pipe group is provided inside the cooling box, and the dispersion pipe group includes a connecting pipe and a plurality of dispersion pipes; The connecting pipe is rotatably sleeved on the end of the liquid outlet pipe located on the inner side of the cooling box, and multiple dispersion pipes are evenly fixed and connected to the upper side end of the connecting pipe, and one side of the horizontal side of the dispersion pipe is provided with multiple evenly distributed dispersion holes, and the dispersion holes on the multiple dispersion pipes are all arranged in the same direction; the reverse thrust generated when the coolant is sprayed out through the dispersion holes causes the dispersion pipe group to rotate as a whole, thereby disturbing the coolant inside the cooling box, so that the coolant temperature of each part inside the cooling box is uniform, and the cooling effect on the heating plate is better.

[0013] As a further supplement to the present application, the connecting pipe is threadedly sleeved on the end of the liquid outlet pipe located on the inner side of the cooling box, and the connecting pipe and the liquid outlet pipe are matched with each other in a two-way thread; the reverse thrust generated when the coolant is sprayed out through the dispersion hole causes the dispersion pipe group to rotate as a whole, and under the action of the two-way thread, the dispersion pipe group as a whole moves back and forth up and down, and the disturbance effect is better.

[0014] As a further supplement to the present application, an elastic heat-conducting group connected to the inner side of the cooling box is installed at the lower end of the mounting seat, and a heat-conducting plate is installed at the lower end of the elastic heat-conducting group.

[0015] As a further supplement to the present application, the elastic heat conducting group includes a pipe sleeve, a second thermocouple, a sealing slip ring and a compression spring; The pipe sleeve is fixedly passed through the mounting seat, the sealing slip ring is slidably installed on the inner side of the pipe sleeve and fixedly sleeved on the outer side of the middle part of the second thermocouple, the compression spring is fixed between the pipe sleeve and the bottom end of the sealing slip ring, the heat conducting plate is in contact with the surface of the frame bar, and cooperates with the second thermocouple to recover the heat on the frame bar, and at the same time can effectively reduce the adverse effects of the high temperature of welding on the frame bar.

[0016] As a further supplement to the present application, a plurality of heat pipes are fixed at equal intervals on the side ends of the cooling box, and the heat pipes extend through and extend to the inner side of the cooling box; the heat pipes have good thermal conductivity and can quickly take away the heat in the coolant, thereby ensuring the stable cooling effect of the coolant and the efficient conversion of heat to electrical energy by the thermocouple.

[0017] In summary, the temperature change of the heating plate is monitored in real time by setting the thermocouple 1. When the heat generated during welding exceeds the heat dissipation capacity of the heating plate itself, the thermocouple 1 converts this excess heat into electrical energy to avoid deformation of the welding part of the frame strip caused by overheating of the heating plate, thereby improving the welding quality; and the electrical energy generated by the thermocouple 1 is collected and converted into a higher voltage output by using the thermoelectric power generation module to achieve efficient use of energy; by extending the thermocouple 1 to the inside of the cooling box, the temperature difference between the two ends of the thermocouple 1 can be further increased by using the coolant, thereby improving the heat-electrical energy conversion rate; In addition, with the action of the circulating pump, the reverse thrust generated when the coolant is sprayed out through the dispersion holes causes the dispersion tube group to rotate as a whole, thereby disturbing the coolant inside the cooling box, so that the coolant temperature of each part inside the cooling box is uniform, and the cooling effect on the heating plate is better; the heat conduction plate is in contact with the surface of the frame bar, and cooperates with the second thermocouple to recover the heat on the frame bar, and at the same time can effectively reduce the adverse effects of the high temperature of welding on the frame bar. Finally, the heat pipe can quickly take away the heat in the coolant, thereby ensuring the stable cooling effect of the coolant and the efficient conversion of heat to electrical energy by the thermocouple. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a specific implementation method of the present application; Figure 2 This is a schematic diagram of the overall three-dimensional structure of a heating assembly according to a specific embodiment of the present application; Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure with the cooling box and the heating plate removed; Figure 4 for Figure 2 A schematic diagram of the cross-section structure of the cooling box; Figure 5 This is a schematic diagram of the cross-section structure of a heating plate according to a specific embodiment of the present application; Figure 6 It is a schematic diagram of the cross-section structure of the elastic heat conductive group of a specific implementation mode of the present application; Figure 7 It is a schematic diagram of the three-dimensional structure of the dispersion pipe group according to a specific embodiment of the present application; Figure 8 It is a schematic diagram of the cross-sectional structure of a dispersion tube group according to a specific embodiment of the present application.

[0019] Description of the numbers in the figure: 1. Welding platform; 2. Limit push seat; 3. Welding push rod; 4. Limit stop seat; 5. Adjust push rod; 6. Press push rod; 7. Press plate; 8. Lifting push rod; 9. Heating assembly; 91. Mounting seat; 92. Heating plate; 9201. Pipe slot one; 9202. Pipe slot two; 93. Thermocouple one; 94. Cooling box; 95. Liquid inlet pipe; 96. Liquid outlet pipe; 97. Dispersion pipe group; 971. Connecting pipe; 972. Dispersion pipe; 97201. Dispersion hole; 98. Elastic heat conduction group; 981. Pipe sleeve; 982. Thermocouple two; 983. Sealing slip ring; 984. Compression spring; 99. Heat conduction plate; 910. Heat pipe. DETAILED DESCRIPTION

[0020] The following is a detailed description of five implementation methods of the present application in conjunction with the accompanying drawings.

[0021] The first implementation method: The present invention provides a new type of welding device for door and window processing, please refer to Figure 1-5 , including a welding platform 1, a heating mechanism and a thermoelectric power generation module.

[0022] Among them, a main positioning mechanism and a side positioning mechanism are installed at the upper end of the welding platform 1. The two side positioning mechanisms are respectively located on both sides of the main positioning mechanism and are set at a ninety-degree angle with the main positioning mechanism. The two heating mechanisms are respectively installed on one side of the two side positioning mechanisms close to the main positioning mechanism. The heating mechanism includes a lifting push rod 8 and a heating assembly 9.

[0023] Regarding the main positioning mechanism and the side positioning mechanism, specifically, Figure 1 It is shown that the main positioning mechanism includes a limit push seat 2, a welding push rod 3 and a clamping assembly, the clamping assembly includes a clamping push rod 6 and a clamping plate 7, the clamping plate 7 is installed at the output end of the clamping push rod 6, the welding push rod 3 is installed at the upper end of the welding platform 1, the limit push seat 2 is installed at the output end of the welding push rod 3, the clamping push rod 6 is installed at the middle of the upper end of the limit push seat 2 through a mounting frame, the side positioning mechanism includes a limit stop seat 4, an adjusting push rod 5 and a clamping assembly, the adjusting push rod 5 is installed at the upper end of the welding platform 1, the limit stop seat 4 is installed at the output end of the adjusting push rod 5, the clamping push rod 6 is installed at the middle of the upper end of the limit stop seat 4 through a mounting frame, and the lifting push rod 8 is installed at the side end of the limit stop seat 4 close to the limit push seat 2.

[0024] Among them, Figure 2-5As shown, the heating assembly 9 includes a mounting seat 91 and a heating plate 92. The mounting seat 91 is installed at the output end of the lifting push rod 8. The heating plate 92 is vertically installed at the middle of the lower end of the mounting seat 91, and the heating plate 92 is set at a forty-five degree angle with the main positioning mechanism. A plurality of thermocouples 93 are equidistantly fixed to the lower end of the mounting seat 91. A plurality of vertical pipe grooves 9201 are arranged at the upper end of the heating plate 92 along its length direction. A plurality of thermocouples 93 are correspondingly inserted into the inner sides of the plurality of pipe grooves 9201. The temperature change of the heating plate 92 is monitored in real time by the thermocouple 93. When the heat generated during welding exceeds the heat dissipation capacity of the heating plate 92 itself, the thermocouple 93 converts this excess heat into electrical energy to avoid overheating of the heating plate 92 and deformation of the welding part of the frame strip, thereby improving the welding quality.

[0025] The thermoelectric power generation module is arranged on the mounting seat 91 and connected to the thermocouple 93. The thermoelectric power generation module collects the electric energy generated by the thermocouple 93 and converts it into a higher voltage output, thereby realizing the effective utilization of energy.

[0026] An elastic heat-conducting group 98 connected to the inner side of the cooling box 94 is installed at the lower end of the mounting seat 91, and a heat-conducting plate 99 is installed at the lower end of the elastic heat-conducting group 98. The elastic heat-conducting group 98 includes a sleeve 981, a thermocouple 982, a sealing slip ring 983 and a compression spring 984. The sleeve 981 is fixedly passed through the mounting seat 91, the sealing slip ring 983 is slidably installed on the inner side of the sleeve 981, and is fixedly sleeved on the outer side of the middle part of the thermocouple 982. The compression spring 984 is fixed between the sleeve 981 and the bottom end of the sealing slip ring 983. The heat-conducting plate 99 contacts the surface of the frame bar, and cooperates with the thermocouple 982 to recover the heat on the frame bar, and at the same time can effectively reduce the adverse effects of the welding high temperature on the frame bar.

[0027] Second implementation method: Based on the first embodiment, the present embodiment adds the following structure, so that the present application has the function of improving the heat-electrical energy conversion rate of the thermocouple 93, and the specific configuration is as follows: Figure 2 and Figure 4 As shown, a cooling box 94 is installed at the upper end of the mounting seat 91, and the inner side of the cooling box 94 is filled with coolant. The upper end of the thermocouple 93 passes through the mounting seat 91 and extends to the inner side of the cooling box 94; the coolant can further increase the temperature difference between the two ends of the thermocouple 93, thereby improving the heat-electrical energy conversion rate.

[0028] The third implementation method: This embodiment is based on the embodiment 2, and the following structure is added, so that the present application has the function of enhancing the heat dissipation effect of the heating plate 92, and the specific configuration is as follows: Figure 4 , Figure 7 and Figure 8As shown, a liquid inlet pipe 95 and a liquid outlet pipe 96 are installed at the lower end of the mounting seat 91. The liquid inlet pipe 95 and the liquid outlet pipe 96 are both connected to the inner side of the cooling box 94. A circulating pump is installed on the liquid inlet pipe 95, and a one-way valve is installed on the liquid outlet pipe 96. A pipe groove 9202 adapted to the liquid inlet pipe 95 and the liquid outlet pipe 96 is provided on the heating plate 92.

[0029] Based on the above structural setting, a circulating pump can be used to circulate and cool the heating plate 92 using the coolant in the cooling box 94 to further enhance the heat dissipation effect of the heating plate 92.

[0030] Among them, Figure 4 , Figure 7 and Figure 8 As shown, a dispersion tube group 97 is provided on the inner side of the cooling box 94, and the dispersion tube group 97 includes a connecting tube 971 and a plurality of dispersion tubes 972. The connecting tube 971 is rotatably sleeved on the end of the liquid outlet tube 96 located on the inner side of the cooling box 94, and the plurality of dispersion tubes 972 are evenly fixedly connected to the upper side end of the connecting tube 971, and a plurality of evenly distributed dispersion holes 97201 are provided on one side of the horizontal side surface of the dispersion tube 972, and the dispersion holes 97201 on the plurality of dispersion tubes 972 are all arranged in the same direction.

[0031] Based on the coordinated arrangement of the above structure, the reverse thrust generated when the coolant is sprayed out through the dispersion hole 97201 causes the dispersion tube group 97 to rotate as a whole, thereby disturbing the coolant inside the cooling box 94, so that the coolant temperature of each part inside the cooling box 94 is uniform, and the cooling effect on the heating plate 92 is better.

[0032] The fourth implementation method: Based on Implementation Example 3, this implementation example adds the following structure, so that the present application has the ability to enhance the disturbance effect on the coolant, and the specific settings are as follows: the connecting pipe 971 is threadedly sleeved on the end of the liquid outlet pipe 96 located on the inner side of the cooling box 94, and the connecting pipe 971 and the liquid outlet pipe 96 are in a two-way threaded fit; the reverse thrust generated when the coolant is sprayed out through the dispersion hole 97201 causes the dispersion tube group 97 to rotate as a whole, and under the action of the two-way threaded fit, the dispersion tube group 97 as a whole moves back and forth up and down, and the disturbance effect is better.

[0033] The fifth implementation method: Based on Implementation 4, this implementation adds the following structure, so that the present application has the effect of quickly cooling the coolant. The specific settings are as follows: a plurality of heat pipes 910 are fixed at equal intervals on the side ends of the cooling box 94, and the heat pipes 910 extend through the inner side of the cooling box 94; the heat pipes 910 have good thermal conductivity and can quickly take away the heat in the coolant, thereby ensuring the stable cooling effect of the coolant and the efficient conversion of heat to electrical energy by the thermocouple.

[0034] Compared with the prior art, in this solution, the temperature change of the heating plate 92 is monitored in real time by the thermocouple 93. When the heat generated during welding exceeds the heat dissipation capacity of the heating plate 92 itself, the thermocouple 93 converts this excess heat into electrical energy to avoid deformation of the welding part of the frame strip caused by overheating of the heating plate 92, thereby improving the welding quality; and the electrical energy generated by the thermocouple 93 is collected and converted into a higher voltage output by a thermoelectric power generation module, thereby realizing the effective use of energy; Compared with the prior art, in this solution, by extending the thermocouple 93 to the inside of the cooling box 94, the temperature difference between the two ends of the thermocouple 93 can be further increased by using the coolant, thereby improving the heat-electrical energy conversion rate; Compared with the prior art, in this solution, with the action of the circulating pump, the reverse thrust generated when the coolant is ejected through the dispersion hole 97201 causes the dispersion tube group 97 to rotate as a whole, thereby disturbing the coolant inside the cooling box 94, so that the coolant temperature of each part inside the cooling box 94 is uniform, and the cooling effect on the heating plate 92 is better; Compared with the prior art, in this solution, the heat conducting plate 99 is in contact with the surface of the frame bar, and cooperates with the thermocouple 982 to recover the heat on the frame bar, while effectively reducing the adverse effects of high welding temperature on the frame bar. Finally, the heat pipe 910 can quickly take away the heat in the coolant, thereby ensuring the stable cooling effect of the coolant and the efficient conversion of heat to electrical energy by the thermocouple.

[0035] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A new type of welding device for door and window processing, characterized in that: include: A welding platform (1), wherein a main positioning mechanism and a side positioning mechanism are installed at the upper end of the welding platform (1), and the two side positioning mechanisms are respectively located on both sides of the main positioning mechanism and are arranged at an angle of 90 degrees to the main positioning mechanism; A heating mechanism, wherein the two heating mechanisms are respectively installed on one side of the two side positioning mechanisms close to the main positioning mechanism, and the heating mechanism comprises a lifting push rod (8) and a heating assembly (9); The lifting push rod (8) is mounted on the side positioning mechanism, and the heating component (9) comprises a mounting seat (91) and a heating plate (92); The mounting seat (91) is mounted on the output end of the lifting push rod (8), the heating plate (92) is vertically mounted on the middle part of the lower end of the mounting seat (91), and the heating plate (92) is arranged at an angle of forty-five degrees to the main positioning mechanism; A plurality of thermocouples 1 (93) are fixed at equal intervals on the lower end of the mounting seat (91); a plurality of tube grooves 1 (9201) in a vertical direction are arranged on the upper end of the heating plate (92) along its length direction; the plurality of thermocouples 1 (93) are inserted into the inner sides of the plurality of tube grooves 1 (9201) in a one-to-one correspondence; the temperature change of the heating plate (92) is monitored in real time by using the thermocouples 1 (93); when the heat generated during welding exceeds the heat dissipation capacity of the heating plate (92) itself, the thermocouples 1 (93) convert this excess heat into electrical energy; A thermoelectric power generation module is arranged on the mounting seat (91) and connected to the thermocouple one (93); the thermoelectric power generation module collects the electric energy generated by the thermocouple one (93) and converts it into a higher voltage output.

2. A novel welding device for door and window processing according to claim 1, characterized in that: The main positioning mechanism comprises a limiting push seat (2), a welding push rod (3) and a clamping assembly; The clamping assembly comprises a clamping push rod (6) and a clamping plate (7), wherein the clamping plate (7) is mounted on the output end of the clamping push rod (6); The welding push rod (3) is mounted on the upper end of the welding platform (1), the limiting push seat (2) is mounted on the output end of the welding push rod (3), and the pressing push rod (6) is mounted on the middle part of the upper end of the limiting push seat (2) through a mounting frame; The side positioning mechanism comprises a limiting stop (4), an adjusting push rod (5) and a pressing assembly; The adjusting push rod (5) is mounted on the upper end of the welding platform (1), the limiting stop seat (4) is mounted on the output end of the adjusting push rod (5), and the pressing push rod (6) is mounted on the middle part of the upper end of the limiting stop seat (4) through a mounting frame; The lifting push rod (8) is mounted on a side end of the position limiting support seat (4) close to the position limiting push seat (2).

3. A novel welding device for door and window processing according to claim 1, characterized in that: A cooling box (94) is mounted on the upper end of the mounting seat (91), and a cooling liquid is contained inside the cooling box (94). The upper end of the thermocouple 1 (93) passes through the mounting seat (91) and extends to the inner side of the cooling box (94).

4. A novel welding device for door and window processing according to claim 3, characterized in that: A liquid inlet pipe (95) and a liquid outlet pipe (96) are installed at the lower end of the mounting seat (91), the liquid inlet pipe (95) and the liquid outlet pipe (96) are both connected to the inner side of the cooling box (94), a circulating pump is installed on the liquid inlet pipe (95), and a one-way valve is installed on the liquid outlet pipe (96); The heating plate (92) is provided with a second pipe groove (9202) adapted to the liquid inlet pipe (95) and the liquid outlet pipe (96).

5. A novel welding device for door and window processing according to claim 4, characterized in that: A dispersion pipe group (97) is provided inside the cooling box (94), and the dispersion pipe group (97) comprises a connecting pipe (971) and a plurality of dispersion pipes (972); The connecting pipe (971) is rotatably sleeved on the end of the liquid outlet pipe (96) located on the inner side of the cooling box (94), and the plurality of dispersion pipes (972) are evenly fixedly connected to the upper side end of the connecting pipe (971), and one side of the horizontal side of the dispersion pipe (972) is provided with a plurality of evenly distributed dispersion holes (97201), and the dispersion holes (97201) on the plurality of dispersion pipes (972) are all arranged in the same direction.

6. A novel welding device for door and window processing according to claim 5, characterized in that: The connecting pipe (971) is threadedly sleeved on the end of the liquid outlet pipe (96) located inside the cooling box (94), and the connecting pipe (971) and the liquid outlet pipe (96) are bidirectionally threadedly matched.

7. A novel welding device for door and window processing according to claim 5, characterized in that: An elastic heat-conducting group (98) connected to the inner side of the cooling box (94) is mounted at the lower end of the mounting seat (91), and a heat-conducting plate (99) is mounted at the lower end of the elastic heat-conducting group (98).

8. A novel welding device for door and window processing according to claim 7, characterized in that: The elastic heat-conducting group (98) comprises a pipe sleeve (981), a second thermocouple (982), a sealing slip ring (983) and a compression spring (984); The tube sleeve (981) is fixedly passed through the mounting seat (91), the sealing slip ring (983) is slidably mounted on the inner side of the tube sleeve (981) and fixedly sleeved on the outer side of the middle part of the second thermocouple (982), and the compression spring (984) is fixed between the tube sleeve (981) and the bottom end of the sealing slip ring (983).

9. A novel welding device for door and window processing according to claim 8, characterized in that: A plurality of heat pipes (910) are fixed at equal intervals on the side ends of the cooling box (94), and the heat pipes (910) extend through and extend to the inner side of the cooling box (94).

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