Paper tube hot sticking equipment and system and method thereof

Abstract

The invention relates to paper tube hot sticking equipment which comprises a die body device, a pressurizing device and a heating device, a transformer insulating tube is suitable for being placed in the die body device, and the pressurizing device and the heating device are installed on the die body device. The pressurizing device and the heating device are suitable for presetting data in advance, and the pressurizing device and the heating device are suitable for automatically detecting the data and adjusting the working state.

Description

Technical Field

[0001] This invention relates to the field of paper tube processing equipment and paper tube forming technology, and in particular to a paper tube thermal bonding equipment, system and method thereof. Background Technology

[0002] Transformer insulating cylinders are insulating materials used in electrical equipment such as transformers and high-voltage switches. In transformers, these insulating cylinders isolate windings with different voltages, preventing dangerous situations such as short circuits or electric shocks. They also protect the windings from mechanical damage and environmental corrosion. Paper-based transformer insulating cylinders are made of multiple layers of cardboard, possessing good insulation performance and mechanical strength. Their advantages include low cost, ease of manufacture, light weight, and small space occupation. When manufacturing paper-based transformer insulating cylinders, it is necessary to select suitable paper and adhesives to ensure their insulation performance and mechanical strength. Furthermore, the paper-based transformer insulating cylinders require rigorous inspection and testing to ensure they meet the electrical and mechanical performance requirements of the transformer.

[0003] Transformer insulation cylinders are thermally bonded using paper tube thermal bonding equipment. Existing paper tube thermal bonding equipment typically uses heating and pressurization to bond the joints of the transformer insulation cylinders. However, in actual production, traditional equipment commonly suffers from the problem of relying on manual operation for pressure adjustment: the pressure level depends on the operator's experience for manual adjustment, making it impossible to accurately preset and maintain a stable pressure value. This easily leads to problems such as weak bonding and cracking due to insufficient pressure, or deformation and crushing of the transformer insulation cylinder due to excessive pressure. Furthermore, traditional paper tube thermal bonding equipment struggles to maintain constant pressure automatically during the thermal bonding process. When system pressure fluctuates, it cannot automatically replenish pressure in a timely manner, resulting in poor bonding quality consistency across different workpieces and locations, leading to low production efficiency and product qualification rates. Summary of the Invention

[0004] One advantage of this invention is that it provides a paper tube heat bonding device, system and method, which, through the automated setting of a pressurizing device and a heating device, helps to improve the quality and accuracy of heat-pressing transformer insulation tubes.

[0005] Another advantage of the present invention is that it provides a paper tube heat bonding device, system and method thereof, which avoids the problem of manual operation by automating the pressurization device and the heating device, and helps to improve the consistency of production.

[0006] Another advantage of the present invention is that it provides a paper tube heat bonding device, system and method thereof, wherein the pressure device of the paper tube heat bonding device can be preset with data, eliminating the need for manual adjustment, and making the operation simpler and more stable.

[0007] Another advantage of the present invention is that it provides a paper tube heat bonding device, system and method thereof, wherein the heating device of the paper tube heat bonding device can be preset with data, eliminating the need for manual adjustment, and making the operation simpler and more stable.

[0008] Another advantage of this invention is that it provides a paper tube heat bonding device, system and method, wherein the pressure device of the paper tube heat bonding device can automatically maintain pressure and automatically replenish pressure, so that the pressure in the heat bonding process is constant, the heat bonding quality is more reliable, and it is beneficial to improve the product qualification rate.

[0009] Another advantage of this invention is that it provides a paper tube heat bonding device, system and method, wherein the heating device of the paper tube heat bonding device can automatically heat and stop heating, the heat bonding quality is more reliable, and it is beneficial to improve the product qualification rate.

[0010] Another advantage of the present invention is that it provides a paper tube heat bonding equipment, system and method thereof, wherein the heating device and the pressurizing device of the paper tube heat bonding equipment are independently controlled, the temperature and pressure do not interfere with each other, and the process adaptability is strong.

[0011] Another advantage of the present invention is that it provides a paper tube heat bonding device, system and method thereof, the paper tube heat bonding device having a simple overall structure and stable operation, and is suitable for mass production of transformer insulation tubes.

[0012] According to another aspect of the invention, the invention further provides a paper tube heat bonding apparatus, the paper tube heat bonding apparatus comprising: A mold assembly, wherein a transformer insulating cylinder is adapted to be placed into the mold assembly; A pressurizing device; A heating device, wherein the pressurizing device and the heating device are installed on the mold body device, the pressurizing device and the heating device are adapted to preset a data, and the pressurizing device and the heating device are adapted to automatically detect the data and adjust the working state.

[0013] According to one embodiment of the present invention, the mold assembly includes an upper mold assembly, a lower mold assembly, and an insertion region located between the upper mold assembly and the lower mold assembly, wherein the transformer insulating cylinder is adapted to be inserted into the insertion region.

[0014] According to one embodiment of the present invention, the heating device is disposed on the upper mold assembly of the mold body device, and the pressurizing device is connected to the lower mold assembly and located below the lower mold assembly to drive the lower mold assembly to move upward.

[0015] According to one embodiment of the present invention, the mold assembly further includes a base assembly, wherein the upper mold assembly and the lower mold assembly are both disposed on the base assembly.

[0016] According to one embodiment of the present invention, the base assembly includes a base body, an extension rod, and an adjusting rod. The extension rod is vertically connected to one side of the base body. One end of the upper mold assembly is fixed to the extension rod. One end of the lower mold assembly is movably connected to the extension rod. The pressurizing device is disposed on the base body and connected to the lower mold assembly and located below the lower mold assembly. The adjusting rod is slidably connected to the extension rod.

[0017] According to one embodiment of the present invention, the mold assembly further includes an opening component disposed on one side of the upper mold assembly and the lower mold assembly relative to the extension rod.

[0018] According to an embodiment of the present invention, the opening component includes a first end, a second end, a fixing member and a locking member, wherein the first end is disposed on the upper mold assembly, the second end is disposed on the base body, the first end and the second end are in the same vertical plane, one end of the fixing member is rotatably connected to the second end, and the other end of the fixing member is adapted to be rotated to be connected to the first end and locked by the locking member.

[0019] According to one embodiment of the present invention, the upper mold assembly includes an upper mold portion and an upper protective portion, the upper protective portion being disposed between the upper mold portion and a fitting portion of the transformer insulating cylinder.

[0020] According to one embodiment of the present invention, the lower mold assembly includes a lower mold portion and a lower protective portion, the lower protective portion being disposed between the lower mold portion and the mating portion of the transformer insulating cylinder.

[0021] According to one embodiment of the present invention, the upper protective portion includes a first covering unit, and the lower protective portion includes a second covering unit. The first covering unit covers the upper part of the bonding portion of the transformer insulating cylinder to isolate the upper mold portion and the transformer insulating cylinder, and the second covering unit covers the lower part of the bonding portion of the transformer insulating cylinder to isolate the lower mold portion and the transformer insulating cylinder.

[0022] According to one embodiment of the present invention, the lower protective portion further includes a first protective unit and a second protective unit, the first protective unit and the second protective unit being disposed between the lower mold portion and the bonding portion of the transformer insulating cylinder, and arranged sequentially below the second covering unit.

[0023] According to another aspect of the invention, the invention further provides a paper tube heat bonding apparatus system, the paper tube heat bonding apparatus system comprising: A paper tube heat bonding device; and A thermal bonding control system, wherein the thermal bonding control system includes a pressure control module, a heating control module and a main start control module, wherein after the main start control module is activated, the pressure control module and the heating control module are respectively used to control the pressure device and the heating device of the paper tube thermal bonding equipment.

[0024] According to one embodiment of the present invention, the pressurization control module includes a pressurization preset module, a lifting module, a pressure holding module and a pressure replenishing module. The pressurization preset module is used to preset the data in advance. The lifting module is used to control the pressurization device to stabilize the transformer insulation cylinder. The pressure holding module and the pressure replenishing module are used to adjust the working state of the pressurization device.

[0025] According to one embodiment of the present invention, the heating control module includes a heating preset module and a heating module, wherein the heating preset module is used to preset the data in advance, and the heating module is used to adjust the working state of the heating device.

[0026] According to another aspect of the present invention, the present invention further provides a paper tube heat bonding method, the paper tube heat bonding method comprising the steps of: (A) A lower limit value and an upper limit value of an electrical contact pressure gauge of a pressurizing device are preset; (B) A preset upper limit temperature value and a lower limit temperature value for a heating device; (C) Place a transformer insulating cylinder into a mold body device of a paper tube heat bonding equipment; (D) Detect the pressure of the pressurizing device and adjust the working state of the pressurizing device; (E) Detect the temperature of the heating device and adjust the operating state of the heating device; and (F) Remove the transformer insulating cylinder from the mold device.

[0027] According to an embodiment of the present invention, step D includes the following steps: (D1) Drive the pressurization module into automatic pressure holding state; (D2) Detect that the pressure of the pressurizing device drops to the lower limit of the pressure gauge at the electrical contact, and drive the pressurizing module to enter the automatic pressure replenishment state; (D3) Detecting that the pressure of the pressurizing device rises to the upper limit value of the electrical contact pressure gauge, the pressurizing module is driven into an automatic pressure-maintaining state; and (D4) cycles through (D2) and (D3) in turn.

[0028] According to an embodiment of the present invention, step E includes the following steps: (E1) Drive the heating module to enter the automatic heating state. (E2) Detect that the temperature of the heating device rises to the upper limit temperature value, and drive the heating module to enter the automatic cooling state; (E3) Detecting that the temperature of the heating device has dropped to the lower limit temperature value, and driving the heating module to enter automatic heating state; and (E4) cycles through (E2) and (E3) in turn.

[0029] The further objects and advantages of the invention will become fully apparent from the following description and accompanying drawings. Attached Figure Description

[0030] Figure 1 This is one of the overall structural schematic diagrams of a paper tube heat bonding device according to an embodiment of the present invention.

[0031] Figure 2 This is a second schematic diagram of the overall structure of a paper tube heat bonding device according to an embodiment of the present invention.

[0032] Figure 3 This is a partial side view of a paper tube heat bonding apparatus according to the above embodiment of the present invention.

[0033] Figure 4 This is another partial side view of a paper tube heat bonding apparatus according to the above embodiment of the present invention.

[0034] Figure 5 This is a block diagram of a thermal bonding control system for a paper tube thermal bonding apparatus according to the above embodiments of the present invention.

[0035] Figure 6 This is a schematic flowchart of a paper tube heat bonding method using a paper tube heat bonding apparatus according to the above embodiment of the present invention.

[0036] Figure 7 This is a schematic diagram of the overall structure of a transformer insulating cylinder according to the above embodiment of the present invention. Detailed Implementation

[0037] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0038] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the invention.

[0039] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0040] Reference Appendix Figure 1 To be continued Figure 7 As shown, a paper tube heat bonding equipment system according to a preferred embodiment of the present invention is illustrated. The paper tube heat bonding equipment system includes a paper tube heat bonding device 1 and a heat bonding control system 2, wherein the heat bonding control system 2 is adapted to control the paper tube heat bonding device 1.

[0041] Figure 7 This is a schematic diagram of the overall structure of a transformer insulation cylinder 3 according to the above embodiment of the present invention. In the embodiment of this application, the paper tube heat bonding device 1 is used to heat-press the transformer insulation cylinder 3. Specifically, as shown in the figure, the transformer insulation cylinder 3 includes a cylinder part 31, a bonding part 32, and an adhesive layer 33. The two ends of the cylinder part 31 are bonded together by the adhesive layer 33 to form the bonding part 32, thereby making the cylinder part 31 form a cylinder shape. That is to say, the paper tube heat bonding device 1 achieves a stable connection of the bonding part 32 of the transformer insulation cylinder 3 by using a heating and pressurizing method.

[0042] Specifically, the paper tube heat bonding equipment 1 includes a mold device 10, a pressurizing device 20, and a heating device 30. The pressurizing device 20 and the heating device 30 are both disposed on the mold device 10 to pressurize and heat the transformer insulation cylinder 3 respectively, thereby achieving a stable bond of the bonding portion 32 of the transformer insulation cylinder 3. In this embodiment, unlike traditional paper tube heat bonding equipment, the pressurizing device 20 and the heating device 30 of this invention are adapted to have pre-set data via the heat bonding control system 2, eliminating the need for manual adjustment, making operation simpler and more stable, and improving the quality and accuracy of heat-pressing the transformer insulation cylinder 3. Specifically, the pressurizing device 20 is adapted to have pre-set pressure data via the heat bonding control system 2, and the heating device 30 is adapted to have pre-set temperature data via the heat bonding control system 2.

[0043] In other words, the pressurizing device 20 is adapted to pre-set a lower limit value and an upper limit value of an electrical contact pressure gauge, and the heating device 30 is adapted to pre-set an upper limit temperature value and a lower limit temperature value. The pressurizing device 20 is adapted to automatically detect a pressure and adjust its working state, and the heating device is adapted to automatically detect a temperature and adjust its working state. When the pressurizing device 20 detects that the pressure has dropped to the lower limit value of the electrical contact pressure gauge, the pressurizing device 20 adjusts its own working state and enters an automatic pressure replenishment state; when the pressurizing device 20 detects that the pressure has risen to the upper limit value of the electrical contact pressure gauge, the pressurizing device 20 adjusts its own working state and enters an automatic pressure holding state. Similarly, when the heating device 30 detects that the temperature has risen to the upper limit temperature value, the heating device 30 adjusts its own working state and enters an automatic cooling state; when the heating device 30 detects that the temperature has dropped to the lower limit temperature value, the heating device 30 adjusts its own working state and enters an automatic heating state.

[0044] More specifically, the mold assembly 10 includes an upper mold assembly 11, a lower mold assembly 12, and an insertion region 13 located between the upper mold assembly 11 and the lower mold assembly 12. The transformer insulation cylinder 3 is adapted to be inserted into the insertion region 13, and the fitting portion 32 of the transformer insulation cylinder 3 is located between the upper mold assembly 11 and the lower mold assembly 12. The heating device 30 is disposed on the upper mold assembly 11 of the mold assembly 10. In one embodiment, the heating device 30 is placed inside the upper mold assembly 11; in another embodiment, the heating device 30 is disposed close to the upper mold assembly 11 and directly connected to it to stably transfer heat to the upper mold assembly 11, thereby heating the transformer insulation cylinder 3. The pressurizing device 20 is connected to the lower mold assembly 12 and located below the lower mold assembly 12. It is used to drive the lower mold assembly 12 to move upward and apply a pressing force to the transformer insulating cylinder 3. The pressurizing direction of the pressurizing device 20 is towards the insertion area 13 between the upper mold assembly 11 and the lower mold assembly 12.

[0045] Figure 3 This is a partial side view of the paper tube heat bonding device 1 according to the above embodiment of the present invention. Figure 4 This is another partial side view of the paper tube heat bonding device 1 according to the above embodiment of the present invention.

[0046] The upper mold assembly 11 includes an upper mold portion 111 and an upper protective portion 112. The upper protective portion 112 is disposed between the upper mold portion 111 and the mating portion 32 of the transformer insulation cylinder 3. That is, the upper protective portion 112 covers the mating portion 32 of the transformer insulation cylinder 3 to isolate the upper mold portion 111 and the transformer insulation cylinder 3, preventing the transformer insulation cylinder 3 from directly contacting the high-temperature upper mold portion 111 and causing problems such as burns, sticking, and indentations. This results in a smoother and more even surface of the transformer insulation cylinder 3 after hot pressing and bonding, effectively improving the appearance quality of the transformer insulation cylinder 3. At the same time, the upper protective portion 112 can reduce the adhesion between the transformer insulation cylinder 3 and the upper mold assembly 11, reducing demolding resistance, allowing the transformer insulation cylinder 3 to be detached more smoothly and conveniently after processing, achieving fast and stable demolding, and improving production efficiency and product qualification rate.

[0047] The lower mold assembly 12 includes a lower mold portion 121 and a lower protective portion 122. The lower protective portion 122 is disposed between the lower mold portion 121 and the contact portion 32 of the transformer insulation cylinder 3. That is, the lower protective portion 122 covers the area below the contact portion 32 of the transformer insulation cylinder 3 to isolate the lower mold portion 121 and the transformer insulation cylinder 3, preventing the transformer insulation cylinder 3 from directly contacting the lower mold portion 121. Similarly, the lower protective portion 122 can reduce the adhesion between the transformer insulation cylinder 3 and the lower mold assembly 12, reduce demolding resistance, and enable the transformer insulation cylinder 3 to be detached more smoothly and conveniently after processing, achieving fast and stable demolding, and improving production efficiency and product qualification rate.

[0048] It is worth mentioning that the upper protective part 112 includes a first covering unit 1121, and the lower protective part 122 includes a second covering unit 1221. The first covering unit 1121 covers the upper part of the bonding part 32 of the transformer insulating cylinder 3 to isolate the upper mold part 111 and the transformer insulating cylinder 3, and the second covering unit 1221 covers the lower part of the bonding part 32 of the transformer insulating cylinder 3 to isolate the lower mold part 121 and the transformer insulating cylinder 3. In this embodiment, the first covering unit 1121 and the second covering unit 1221 are implemented as a plastic film, which can effectively isolate the transformer insulation cylinder 3 from direct contact with the upper mold part 111 and the lower mold part 121, ensuring that the surface of the transformer insulation cylinder 3 after heat bonding is flat and smooth, without indentations or adhesive residue, significantly improving the appearance quality of the transformer insulation cylinder 3. It can also achieve fast and smooth demolding after the paper tube is bonded, avoiding tearing of the paper tube or damage to the roundness of the paper tube during demolding, further ensuring the product qualification rate, while reducing the workload of mold cleaning, improving production efficiency, and perfectly meeting the strict requirements of the transformer insulation cylinder 3 for appearance precision and molding quality.

[0049] Furthermore, the lower protective portion 122 further includes a first protective unit 1222 and a second protective unit 1223, wherein the first protective unit 1222 and the second protective unit 1223 are both disposed between the lower mold portion 121 and the bonding portion 32 of the transformer insulating cylinder 3, and are arranged sequentially below the second covering unit 1221. That is, the second covering unit 1221, the first protective unit 1222, and the second protective unit 1223 are arranged sequentially below the bonding portion 32 of the transformer insulating cylinder 3 to isolate the bonding portion 32 of the transformer insulating cylinder 3 and the lower mold portion 121. In this application, the first protective unit 1222 is implemented as a white felt, and the second protective unit 1223 is implemented as a white rubber. The white felt is located between the white rubber and the transformer insulating cylinder 3 as a temperature buffer layer to prevent local overheating and protect the white rubber. The white rubber is suitable for providing elastic pressure equalization, which is key to ensuring bonding quality and preventing damage to the transformer insulating cylinder 3.

[0050] More notably, the upper mold portion 111 has a first heat-adhesive surface 1111, and the lower mold portion 121 has a second heat-adhesive surface 1211 that matches the first heat-adhesive surface 1111 of the upper mold portion 111. The first heat-adhesive surface 1111 and the second heat-adhesive surface 1211 extend from the upper mold portion 111 and the lower mold portion 121 respectively, bending to fit the shape of the transformer insulation cylinder 3. Specifically, the first heat-adhesive surface 1111 extends convexly from the upper mold portion 111 to form an outwardly convex arc shape, and the second heat-adhesive surface 1211 extends concavely from the lower mold portion 121 to form an inwardly concave arc shape. The area between the first heat-adhesive surface 1111 and the second heat-adhesive surface 1211 is the insertion area 13, and the transformer insulation cylinder 3 is adapted to be inserted into the insertion area 13 for hot pressing.

[0051] The mold assembly 10 further includes a base assembly 14, wherein the upper mold assembly 11 and the lower mold assembly 12 are both disposed on the base assembly 14. The base assembly 14 includes a base body 141, an extension rod 142, and an adjusting rod 143, wherein the extension rod 142 is vertically connected to one side of the base body 141, one end of the upper mold assembly 11 is fixed to the extension rod 142, one end of the lower mold assembly 12 is movably connected to the extension rod 142, and the pressurizing device 20 is disposed on the base body 141 and connected to the lower mold assembly 12 and located below the lower mold assembly 12, for driving the lower mold assembly 12 to move upward and applying a pressing force to the transformer insulation cylinder 3. The adjusting rod 143 is slidably connected to the extension rod 142. When the transformer insulating cylinder 3 is placed in the placement area 13 for hot pressing, the portion of the cylindrical part 31 of the transformer insulating cylinder 3 relative to the fitting part 32 is supported by the adjusting rod 143, so that the transformer insulating cylinder 3 maintains a complete cylindrical shape and avoids deformation.

[0052] Furthermore, the mold assembly 10 also includes an opening component 15, which is disposed on one side of the upper mold assembly 11 and the lower mold assembly 12 relative to the extension rod 142, for opening and closing the upper mold assembly 11 and the lower mold assembly 12, thereby placing the fitting portion 32 of the transformer insulating cylinder 3 into the insertion area 13 for hot pressing.

[0053] In detail, the opening component 15 includes a first end 151, a second end 152, a fixing member 153, and a locking member 154. The first end 151 is disposed on the upper mold portion 111 of the upper mold component 11, and the second end 152 is disposed on the base body 141 of the base component 14. The first end 151 and the second end 152 are in the same vertical plane. One end of the fixing member 153 is rotatably connected to the second end 152, and the other end of the fixing member 153 is adapted to be rotated to connect to the first end 151 and locked by the locking member 154. In this embodiment, the locking member 154 locks one end of the fixing member 153 to the first end 151 by a through-engagement method. In other possible embodiments, the specific locking method is not a limitation of this invention.

[0054] In this application, the pressurizing device 20 is implemented as a hydraulic cylinder assembly, and the heating device 30 is implemented as a heat-conducting oil heating assembly. The pressurizing device 20 is located below and connected to the lower mold assembly 12, driving the lower mold assembly 12 upwards and automatically maintaining pressure. The heating device 30 is located near and connected to the upper mold assembly 11, providing a stable heating temperature for the upper mold assembly 11. The pressurizing device 20 of the paper tube heat bonding equipment 1 can be preset with data, eliminating the need for manual adjustment, making operation simpler and more stable. Similarly, the heating device 30 of the paper tube heat bonding equipment 1 can also be preset with data, eliminating the need for manual adjustment, making operation simpler and more stable. In other words, the pressurizing device 20 of the paper tube heat bonding equipment 1 can automatically maintain and replenish pressure, ensuring constant pressure during the heat bonding process, resulting in more reliable heat bonding quality and improving product qualification rate. The heating device 30 can automatically heat and stop heating, further ensuring reliable heat bonding quality and improving product qualification rate.

[0055] Preferably, the pressurizing device 20 comprises five hydraulic cylinder assemblies, which are evenly arranged below the lower mold assembly 12 and connected to the bottom of the lower mold assembly 12. By employing a structure with five hydraulic cylinder assemblies driven synchronously, the lower mold assembly 12 experiences more uniform force during the upward pressing and pressure holding process. This effectively avoids problems such as uneven load distribution and force distribution caused by single-point or few-cylinder driving, ensuring that the pressure acting on the transformer insulation cylinder 3 remains consistent in both the circumferential and length directions. This improves the uniformity and molding accuracy of the hot-press bonding of the transformer insulation cylinder 3, while also ensuring more stable and reliable equipment operation.

[0056] Figure 5 This is a block diagram of the thermal bonding control system 2 according to the above embodiment of the present invention. The thermal bonding control system 2 includes a pressure control module 21, a heating control module 22, and a main start control module 23. The main start control module 23 is electrically connected to the pressure control module 21 and the heating control module 22. That is, after the main start control module 23 is turned on, the pressure control module 21 and the heating control module 22 are respectively used to control the pressure device 20 and the heating device 30 of the paper tube thermal bonding equipment 1.

[0057] In detail, the pressurization control module 21 includes a pressurization preset module 211, which is used to preset the pressure data in advance. That is, before the transformer insulation cylinder 3 is placed into the placement area 13, the pressurization preset module 211 is used to preset and input the required pressurization value, pressure holding parameters, lower limit value and upper limit value of an electrical contact pressure gauge according to the specifications, thickness and heat bonding process requirements of the transformer insulation cylinder 3. This realizes the advance preset of the data of the pressurization device 20, avoids the errors and instabilities caused by manual pressure adjustment based on human experience in traditional equipment, and provides a control basis for the subsequent precise and constant pressing and pressure holding actions of the pressurization device 20 on the transformer insulation cylinder 3.

[0058] The pressurization control module 21 further includes a lifting module 212, a pressure holding module 213, and a pressure replenishing module 214. The lifting module 212 is used to lift the lower mold assembly 12 so that the lower mold assembly 12 rises and presses the transformer insulation cylinder 3. The pressure holding module 213 and the pressure replenishing module 214 are used to adjust the working state of the pressurization device 20. In other words, after the pressure holding module 213 detects that the lower mold assembly 12 has risen and pressed the transformer insulation cylinder 3, the pressure holding module 213 controls the pressurizing module 20 to enter the automatic pressure holding state; when the pressure replenishing module 214 detects that the pressure of the pressurizing device 20 has dropped to the lower limit value of the electrical contact pressure gauge preset in the pressurizing preset module 211, the pressure holding module 213 stops working, and the pressure replenishing module 214 controls the pressurizing device 20 to enter the automatic pressure replenishing state, replenishing the pressure to the upper limit value of the electrical contact pressure gauge preset in the pressurizing preset module 211; then the pressure replenishing module 214 stops working, the pressure replenishing module 214 controls the pressurizing device 20 to stop replenishing the pressure, and the pressure holding module 213 continues to control the pressurizing device 20 to enter the automatic pressure holding state again, and so on in a cycle.

[0059] The heating control module 22 includes a heating preset module 221, which is used to preset the temperature data in advance. That is, before the transformer insulation cylinder 3 is placed into the placement area 13 and hot-pressed, the heating preset module 221 is used to preset the required heating temperature, heating rate, holding time and other process parameters, as well as an upper limit temperature value and a lower limit temperature value, according to the material, thickness and bonding process requirements of the transformer insulation cylinder 3. This achieves the advance setting and precise control of the heating data, avoiding the problem of the paper cylinder being damaged by excessive temperature or the bonding being weak due to insufficient temperature. It provides a reliable control basis for the subsequent heating device 30 to stably and uniformly heat the upper mold assembly 11, ensuring the temperature consistency and bonding quality of the transformer insulation cylinder 3 during the hot-pressing process.

[0060] The heating control module 22 further includes a heating module 222, which is used to adjust the working state of the heating device 30. That is, after the heating module 222 detects that the lower mold assembly 12 rises and presses the transformer insulation cylinder 3, the heating module 222 controls the heating device 30 to enter the automatic heating state to heat the transformer insulation cylinder 3. When the heating module 222 detects that the temperature of the heating device 30 reaches the upper limit temperature value set in the heating preset module 221, the heating module 222 stops working and the heating device 30 enters the automatic cooling state. When the heating module 222 detects that the temperature of the heating device 30 reaches the lower limit temperature value set in the heating preset module 221, the heating module 222 restarts and controls the heating device 30 to enter the automatic heating state again to heat the transformer insulation cylinder 3, and so on in a cycle.

[0061] It is worth mentioning that after the hot pressing of the transformer insulation cylinder 3 is completed, the heating module 222 and the pressure holding module 213 stop working. The operator manipulates the lifting module 212 to lower the lower mold assembly 12, thereby increasing the insertion area 13 to facilitate the removal of the transformer insulation cylinder 3. After the transformer insulation cylinder 3 is removed, the operator manipulates the main start control module 23 to shut down the paper tube heat bonding equipment 1, thus completing the hot pressing of the transformer insulation cylinder 3.

[0062] In summary, the pressurizing device 20 of the paper tube heat bonding equipment 1 can be preset with data through the heat bonding control system 2, eliminating the need for manual adjustment and making operation simpler and more stable. Similarly, the heating device 30 of the paper tube heat bonding equipment 1 can also be preset with data through the heat bonding control system 2, eliminating the need for manual adjustment and making operation simpler and more stable. The pressurizing device 20 of the paper tube heat bonding equipment 1 can automatically maintain and replenish pressure through the heat bonding control system 2, ensuring constant pressure during the heat bonding process, resulting in more reliable heat bonding quality and improving product qualification rate. The heating device 30 can automatically heat and stop heating through the heat bonding control system 2, further ensuring reliable heat bonding quality and improving product qualification rate.

[0063] Figure 6 This is a schematic flowchart of a paper tube heat bonding method according to the paper tube heat bonding apparatus 1 of the above embodiment of the present invention. The paper tube heat bonding method includes the following steps: (A) A lower limit value and an upper limit value of an electrical contact pressure gauge of a pressurizing device are preset; (B) A preset upper limit temperature value and a lower limit temperature value for a heating device; (C) Place a transformer insulating cylinder into a mold body device of a paper tube heat bonding equipment; (D) Detect the pressure of the pressurizing device and adjust the working state of the pressurizing device; (E) Detect the temperature of the heating device and adjust the operating state of the heating device; and (F) Remove the transformer insulating cylinder from the mold device.

[0064] Steps D and E are performed simultaneously.

[0065] Specifically, step D includes the following steps: (D1) Drive the pressurization module into automatic pressure holding state; (D2) Detect that the pressure of the pressurizing device drops to the lower limit of the pressure gauge at the electrical contact, and drive the pressurizing module to enter the automatic pressure replenishment state; (D3) Detecting that the pressure of the pressurizing device rises to the upper limit value of the electrical contact pressure gauge, the pressurizing module is driven into an automatic pressure-maintaining state; and (D4) cycles through (D2) and (D3) in turn.

[0066] Specifically, step E includes the following steps: (E1) Drive the heating module to enter the automatic heating state. (E2) Detect that the temperature of the heating device rises to the upper limit temperature value, and drive the heating module to enter the automatic cooling state; (E3) Detecting that the temperature of the heating device has dropped to the lower limit temperature value, and driving the heating module to enter automatic heating state; and (E4) cycles through (E2) and (E3) in turn.

[0067] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and any modifications or variations of the implementation of the present invention may be made without departing from the stated principles.

Claims

1. A paper tube thermal bonding device, characterized in that, include: A mold assembly, wherein a transformer insulating cylinder is adapted to be placed into the mold assembly; A pressurizing device; A heating device, wherein the pressurizing device and the heating device are installed on the mold body device, the pressurizing device and the heating device are adapted to preset a data, and the pressurizing device and the heating device are adapted to automatically detect the data and adjust the working state.

2. The paper tube thermal bonding device according to claim 1, wherein the mold assembly comprises an upper mold assembly, a lower mold assembly, and an insertion region located between the upper mold assembly and the lower mold assembly, wherein the transformer insulating tube is adapted to be inserted into the insertion region.

3. The paper tube heat bonding device according to claim 2, wherein the heating device is disposed on the upper mold assembly of the mold body device, and the pressure device is connected to the lower mold assembly and located below the lower mold assembly to drive the lower mold assembly to move upward.

4. The paper tube thermal bonding device according to claim 3, wherein the mold body device further includes a base assembly, wherein the upper mold assembly and the lower mold assembly are both disposed on the base assembly.

5. The paper tube heat bonding device according to claim 4, wherein the base assembly includes a base body, an extension rod and an adjusting rod, the extension rod is vertically connected to one side of the base body, one end of the upper mold assembly is fixed to the extension rod, one end of the lower mold assembly is movably connected to the extension rod, the pressure device is disposed on the base body and connected to the lower mold assembly and located below the lower mold assembly, and the adjusting rod is slidably connected to the extension rod.

6. The paper tube heat bonding apparatus according to claim 5, wherein the mold assembly further comprises an opening component, the opening component being disposed on one side of the upper mold assembly and the lower mold assembly relative to the extension rod.

7. The paper tube heat bonding device according to claim 6, wherein the opening component includes a first end, a second end, a fixing member and a locking member, wherein the first end is disposed on the upper mold assembly, the second end is disposed on the base body, the first end and the second end are in the same vertical plane, one end of the fixing member is rotatably connected to the second end, and the other end of the fixing member is adapted to be rotated to be connected to the first end and locked by the locking member.

8. The paper tube thermal bonding device according to claim 7, wherein the upper mold assembly includes an upper mold part and an upper protective part, the upper protective part being disposed between the upper mold part and a bonding part of the transformer insulating tube.

9. The paper tube thermal bonding device according to claim 8, wherein the lower mold assembly includes a lower mold portion and a lower protective portion, the lower protective portion being disposed between the lower mold portion and the bonding portion of the transformer insulating tube.

10. The paper tube thermal bonding apparatus according to claim 9, wherein the upper protective part includes a first covering unit, the lower protective part includes a second covering unit, the first covering unit covers the upper part of the bonding portion of the transformer insulating tube to isolate the upper mold portion and the transformer insulating tube, and the second covering unit covers the lower part of the bonding portion of the transformer insulating tube to isolate the lower mold portion and the transformer insulating tube.

11. The paper tube thermal bonding device according to claim 10, wherein the lower protective part further includes a first protective unit and a second protective unit, the first protective unit and the second protective unit are both disposed between the lower mold part and the bonding part of the transformer insulating tube, and are arranged sequentially below the second covering unit.

12. A paper tube thermal bonding equipment system, characterized in that, include: A paper tube thermal bonding apparatus according to any one of claims 1-11; and A thermal bonding control system, wherein the thermal bonding control system includes a pressure control module, a heating control module and a main start control module, wherein after the main start control module is activated, the pressure control module and the heating control module are respectively used to control the pressure device and the heating device of the paper tube thermal bonding equipment.

13. The paper tube thermal bonding equipment system according to claim 12, wherein the pressure control module includes a pressure preset module, a lifting module, a pressure holding module and a pressure compensation module, wherein the pressure preset module is used to preset the data in advance, the lifting module is used to control the pressure device to stabilize the transformer insulation tube, and the pressure holding module and the pressure compensation module are used to adjust the working state of the pressure device.

14. The paper tube heat bonding equipment system according to claim 13, wherein the heating control module includes a heating preset module and a heating module, the heating preset module is used to preset the data in advance, and the heating module is used to adjust the working state of the heating device.

15. A method for thermally bonding paper tubes, characterized in that, Includes the following steps: (A) A lower limit value and an upper limit value of an electrical contact pressure gauge of a pressurizing device are preset; (B) A preset upper limit temperature value and a lower limit temperature value for a heating device; (C) Place a transformer insulating cylinder into a mold body device of a paper tube heat bonding equipment; (D) Detect the pressure of the pressurizing device and adjust the working state of the pressurizing device; (E) Detect the temperature of the heating device and adjust the operating state of the heating device; and (F) Remove the transformer insulating cylinder from the mold device.

16. The paper tube thermal bonding method according to claim 15, wherein step D includes the following steps: (D1) Drive the pressurization module into automatic pressure holding state; (D2) Detect that the pressure of the pressurizing device drops to the lower limit of the pressure gauge at the electrical contact, and drive the pressurizing module to enter the automatic pressure replenishment state; (D3) Detecting that the pressure of the pressurizing device rises to the upper limit value of the electrical contact pressure gauge, the pressurizing module is driven into an automatic pressure-maintaining state; and (D4) cycles through (D2) and (D3) in turn.

17. The paper tube thermal bonding method according to claim 16, wherein step E includes the following steps: (E1) Drive the heating module to enter the automatic heating state. (E2) Detect that the temperature of the heating device rises to the upper limit temperature value, and drive the heating module to enter the automatic cooling state; (E3) Detecting that the temperature of the heating device has dropped to the lower limit temperature value, and driving the heating module to enter automatic heating state; and (E4) cycles through (E2) and (E3) in turn.

Images