Manufacturing process and equipment for anti-sulfurization fuse

Abstract

This application relates to the technical field of fuse manufacturing, and in particular to a manufacturing process and equipment for an anti-sulfurization fuse. The process includes installing a first end cap, welding the first end cap, auxiliary heating, installing a second end cap, and welding the second end cap to complete the manufacturing of the anti-sulfurization fuse. This ensures that the molten material is completely separated from the external environment within the ceramic tube, thereby giving the fuse excellent sealing performance. This application allows the fuse to adapt to different environments.

Description

Technical Field

[0001] This application relates to the technical field of fuse manufacturing, and in particular to a manufacturing process and equipment for an anti-sulfurization fuse. Background Technology

[0002] A fuse is a circuit protection component. Its main function is to automatically disconnect the circuit when an abnormality occurs, such as excessive current, to prevent the circuit equipment from being burned out.

[0003] Commonly available square surface mount fuses typically consist of a ceramic tube, end caps, and a fusible element. The fusible element is inserted into the ceramic tube, and the end caps are installed at both ends of the tube, with the fusible element soldered to the end caps. Currently, in use, the fuse only needs to be installed in the circuit. However, fuses require a dry, clean, and sulfide-free environment for operation. In certain special environments, such as those with high sulfide content, sulfides can corrode the connection between the end cap and the fusible element, leading to connection failure. Therefore, after the fuse is assembled, it is necessary to seal the terminals and the fuse itself using special silicone or fluororubber.

[0004] Regarding the aforementioned technologies, fuses are single-use electrical components. Therefore, they need to be replaced after the fuse blows. Each time a fuse is replaced, the terminals and the fuse itself need to be resealed using special silicone or fluororubber, which makes replacement inconvenient. Summary of the Invention

[0005] To improve the sealing performance of fuses and adapt them to different environments, this application provides a manufacturing process and equipment for anti-sulfurization fuses.

[0006] The manufacturing process for an anti-sulfurization fuse provided in this application adopts the following technical solution:

[0007] A manufacturing process for a sulfur-resistant fuse includes:

[0008] A ceramic tube, a molten metal, a first end cap, and a second end cap are provided, both of which are filled with solder.

[0009] First end cap installation: The first end cap is fitted onto one side of the ceramic tube, and there is a gap between the inner wall of the first end cap and the outer wall of the ceramic tube. Then, the molten material passes through the ceramic tube from the end away from the first end cap until it abuts against the solder inside the first end cap.

[0010] The first end cap is welded by heating it to a temperature of 340℃-350℃ until the solder on the first end cap melts and connects with the molten body, and the molten solder flows into the gap between the first end cap and the ceramic tube.

[0011] Auxiliary heating is used to heat the first end cap to a temperature of 250℃-270℃, so that the end cap maintains its temperature.

[0012] The second end cap is installed on the side of the ceramic tube away from the first end cap, and a gap exists between the inner wall of the second end cap and the outer wall of the ceramic tube.

[0013] The second end cap is welded by heating it to a temperature of 340℃-350℃ until the solder on the second end cap melts and connects with the molten material, and the molten solder flows into the gap between the second end cap and the ceramic tube.

[0014] By adopting the above technical solution, the manufacturing of the anti-sulfurization fuse is completed by using the process of first end cap installation → first end cap welding → auxiliary heating → second end cap installation → second end cap welding.

[0015] First, the first end cap is fitted onto one side of the ceramic tube, with gaps between the inner wall of the first end cap and the outer wall of the ceramic tube. Then, the molten material is inserted into the ceramic tube from the end furthest from the first end cap until it touches the solder inside the first end cap. Next, the first end cap is heated to 340℃-350℃. During heating, the solder melts and becomes highly fluid, connecting the first end cap to the molten material. The molten solder also flows and fills the gaps between the inner wall of the first end cap and the outer wall of the ceramic tube, resulting in a better seal between the first end cap and the ceramic tube.

[0016] Next, the first end cap is heated to a temperature of 250℃-270℃ to maintain the temperature of the end cap, thereby allowing the solder inside the end cap to flow fully and fill the gap between the inner wall of the first end cap and the outer wall of the ceramic tube.

[0017] Then, the second end cap is installed on the side of the ceramic tube away from the first end cap, and there is a gap between the inner wall of the second end cap and the outer wall of the ceramic tube. Next, the second end cap is heated to a temperature of 340℃-350℃. During the heating process, the solder melts and has good fluidity. The molten solder connects the second end cap to the molten material, and the molten solder flows and fills the gap between the inner wall of the second end cap and the outer wall of the ceramic tube, so that the connection between the first end cap and the ceramic tube is better sealed.

[0018] The two ends of the ceramic tube are connected by a first end cap and a second end cap, and solder is used to electrically connect the first end cap and the second end cap to the molten material. The solder is also used to seal the gaps between the first end cap and the second end cap and the ceramic tube, thereby completely separating the molten material inside the ceramic tube from the external environment. This gives the fuse good sealing performance to adapt to different environments.

[0019] Optionally, the welding time for the first end cap is 1.2S-1.7S;

[0020] The auxiliary heating time is 1-2 seconds;

[0021] The welding time for the second end cap is 0.2S-0.3S.

[0022] By employing the above technical solution, the first end cap is soldered for 1.2S-1.7S, ensuring the solder inside the first end cap is fully melted. During the auxiliary heating process, the solder inside the first end cap is allowed to fully melt and flow. The auxiliary heating for 1S-2S slows down the cooling time of the first end cap. When soldering the second end cap, heating for 0.2S-0.3S is sufficient to melt the solder inside the second end cap.

[0023] Optionally, the heating temperature for welding the first end cap is 345°C and the heating time is 1.5 seconds.

[0024] The auxiliary heating temperature is 260℃, and the heating time is 1.5 seconds.

[0025] The heating temperature for welding the second end cap is 345℃, and the heating time is 0.25s.

[0026] By adopting the above technical solution, the solder can flow fully in the gap between the first end cap and the second end cap and the ceramic tube, thereby sealing the gap between the first end cap and the second end cap and the ceramic tube.

[0027] Optionally, the gap between the inner wall of the first end cap and the outer wall of the ceramic tube is 0.01mm-0.03mm; the gap between the inner wall of the second end cap and the outer wall of the ceramic tube is 0.01mm-0.03mm.

[0028] By adopting the above technical solution, the gap between the first end cap and the second end cap and the ceramic tube is controlled between 0.01mm and 0.03mm, which makes it easy for the solder to fill the gap between the first end cap and the second end cap and the ceramic tube, and also makes it less likely for the solder between the first end cap and the second end cap and the ceramic tube to become hollow, thus making the sealing effect between the first end cap and the second end cap and the ceramic tube better.

[0029] Optionally, the outer wall cross-section of the ceramic tube is rectangular, and the side length of the outer wall cross-section of the ceramic tube is 2.14mm-2.18mm; the inner wall cross-section of the first end cap is also rectangular, and the side length of the inner wall cross-section of the first end cap is 2.16mm-2.2mm. The dimensions of the inner wall cross-section of the first end cap and the inner wall cross-section of the second end cap are the same, and the amount of solder in the first end cap and the second end cap is 0.018-0.02g.

[0030] By adopting the above technical solution, the dimensions of the first end cap, the second end cap, and the ceramic tube, as well as the amount of solder paste, are controlled so that the solder paste can just fill the gap between the first end cap, the second end cap, and the ceramic tube for sealing.

[0031] Optionally, the outer wall cross-section of the ceramic tube has a side length of 2.16 mm, the inner wall cross-section of the first end cap and the second end cap both have a side length of 2.2 mm, the gap between the inner wall of the first end cap and the outer wall of the ceramic tube is 0.02 mm, the gap between the inner wall of the second end cap and the outer wall of the ceramic tube is 0.02 mm, and the amount of solder in the first end cap and the second end cap is 0.0181 g.

[0032] By adopting the above technical solution, the side length of the outer wall section of the ceramic tube is limited to 2.16mm, and the side length of the inner wall section of the first end cap and the second end cap is limited to 2.2mm. The gap between the inner wall of the first end cap and the outer wall of the ceramic tube is 0.02mm. The amount of solder in the first end cap and the second end cap is 0.0181g, so that the solder can just seal the gap between the first end cap and the second end cap and the ceramic tube, so that the first end cap and the second end cap and the ceramic tube have good sealing performance.

[0033] This application also provides an apparatus for manufacturing anti-sulfurization fuses, comprising:

[0034] A processing table, on which a rotating table is rotatably connected, and multiple gripping hands are installed on the periphery of the rotating table;

[0035] A ceramic tube feeding assembly includes a ceramic tube vibrating plate and a ceramic tube feeding robot. The ceramic tube vibrating plate is installed on one side of the rotating table, and the discharge port of the ceramic tube vibrating plate is located on the upper side of the ceramic tube feeding robot. The ceramic tube feeding robot is used to move the ceramic tube to the clamping hand.

[0036] The first end cap feeding assembly includes a first end cap vibrating plate and a first end cap feeding plate. The first end cap vibrating plate is installed on one side of the rotating table, and the first end cap feeding plate is rotatably connected to the processing table. The discharge port of the first end cap vibrating plate is located on the upper side of the first end cap feeding plate. A feeding groove is formed on the first end cap feeding plate around its axis. The path of the feeding groove passes through the discharge port of the first end cap vibrating plate and also passes under the gripper, so as to install the first end cap on the ceramic tube on the gripper.

[0037] The melt loading assembly includes a melt loading component and a first welding component. The melt loading component is installed on one side of the rotating table, and the first welding component is located at the loading point of the melt loading component. The melt loading component is used to pass the melt through the ceramic tube, and the first welding component is located on the movement path of the clamping hand. The first welding component is used to heat the first end cap of the clamping hand.

[0038] A flipping assembly is mounted on the processing table, and the flipping assembly is used to flip the ceramic tube 180 degrees.

[0039] An auxiliary heating component is installed on the processing table, and the auxiliary heating component is used to heat the first end cap;

[0040] The second end cap feeding assembly includes a second end cap vibrating plate and a second end cap feeding plate. The second end cap vibrating plate is installed on one side of the rotating table, and the second end cap feeding plate is rotatably connected to the processing table. The discharge port of the second end cap vibrating plate is located on the upper side of the second end cap feeding plate. An installation groove is formed around the axis on the second end cap feeding plate. The path of the installation groove passes through the discharge port of the second end cap vibrating plate and also passes under the gripper to install the second end cap on the ceramic tube on the gripper. A second welding member is provided at the bottom of the second end cap feeding plate. The second welding member is used to heat the second end cap on the gripper.

[0041] A feeding assembly, installed on one side of the rotating table, is used to feed components held by the gripper hand; and

[0042] The ceramic tube feeding assembly, the first end cap feeding assembly, the melt installation assembly (4), the flipping assembly, the auxiliary heating assembly, the first end cap feeding assembly, and the unloading assembly are arranged sequentially around the rotating table.

[0043] By adopting the above technical solution, during the rotation of the rotating table, the gripper passes above the ceramic tube feeding robot. At this time, the ceramic tube feeding robot transfers the ceramic tube stored in the ceramic tube vibrating plate to the gripper. The gripper continues to rotate under the drive of the rotating table, so that the gripper rotates to the top of the feeding plate. The feeding groove on the feeding plate receives the first end cap that is fed from the first end cap vibrating plate. The first end cap is rotated to the bottom of the ceramic tube on the gripper. Then the feeding plate presses the first end cap against the ceramic tube, so that the first end cap is fitted onto the ceramic tube.

[0044] The gripper continues to rotate under the drive of the rotary table, causing the ceramic tube on the gripper to rotate to the underside of the molten material loading component. The molten material loading component installs the molten material inside the ceramic tube, with the bottom of the molten material abutting against the solder inside the first end cap. Then, the first welding component heats the first end cap, melting the solder inside, thus welding the first end cap and the molten material together. Simultaneously, the solder flows into the gap between the first end cap and the ceramic tube. Next, the rotation continues to the flipping component, which flips the first end cap and the ceramic tube 180°. Then, the rotary table continues to rotate, moving the gripper to the auxiliary heating component, which provides further heating to the first end cap, allowing the solder inside the first end cap to continue flowing.

[0045] The gripper then rotates to the top of the second end cap loading tray. The second end cap, received from the first end cap vibrating plate in its mounting slot, rotates to the bottom of the gripper and places it onto the ceramic tube. Next, the second welding component heats the second end cap, melting the solder inside and welding it to the molten material. Simultaneously, the solder flows into the gap between the second end cap and the ceramic tube. Finally, the gripper rotates to the unloading assembly and removes the welded ceramic tube from the gripper.

[0046] Optionally, the flipping assembly includes a lifting cylinder, a lifting seat, two telescopic cylinders arranged parallel to each other in the vertical direction, and a rotary manipulator fixedly connected to the piston rod of the telescopic cylinder. The lifting cylinder is fixedly connected to the processing table, the lifting seat is fixedly connected to the piston rod of the lifting cylinder, and the telescopic cylinder is fixedly connected to the lifting seat.

[0047] By adopting the above technical solution, when the gripper rotates to the bottom of the flipping component, the lifting seat and the telescopic cylinder jointly drive the lower rotating manipulator to grip the ceramic tube, then rotate the ceramic tube 180°, and then drive the upper rotating manipulator to grip the ceramic tube. Then the lifting seat moves the upper rotating manipulator to the gripper.

[0048] Optionally, the auxiliary heating assembly includes an elastic heating plate and a drive rod. One end of the elastic heating plate is fixedly connected to the processing table. The elastic heating plate is located above the clamping hand, and the drive rod is located above the elastic heating plate to abut against the elastic heating plate against the components on the clamping hand.

[0049] By adopting the above technical solution, when the clamping hand rotates to the underside of the elastic heating plate, the drive rod abuts against the elastic heating plate, so that the elastic heating plate abuts against the first end cap of the clamping hand, thereby heating the first end cap by means of the elastic heating plate.

[0050] Optionally, the second welded component includes a lifting cylinder and a lifting block. The lifting cylinder is located at the point where the mounting groove and the clamping hand overlap vertically. The lifting block is located on the piston rod of the lifting cylinder and is located within the mounting groove. An electric heating element is connected to the lifting block to heat it.

[0051] By adopting the above technical solution, through the cooperation of the lifting cylinder and the lifting block, when installing the second end cap, not only can the second end cap be fitted onto the ceramic tube, but the heating element of the lifting block can also heat the second end cap, thus facilitating the welding of the second end cap onto the ceramic tube.

[0052] In summary, this application includes at least one of the following beneficial technical effects:

[0053] 1. The manufacturing process of the anti-sulfurization fuse is completed by installing the first end cap, welding the first end cap, auxiliary heating, installing the second end cap, and welding the second end cap. This process completely separates the molten material inside the ceramic tube from the external environment, thereby giving the fuse good sealing performance to adapt to different environments.

[0054] 2. By setting the outer wall cross-section of the ceramic tube to 2.16mm, the inner wall cross-section of the first and second end caps to 2.2mm, the gap between the inner wall of the first end cap and the outer wall of the ceramic tube to 0.02mm, the gap between the inner wall of the second end cap and the outer wall of the ceramic tube to 0.02mm, and the amount of solder in the first and second end caps to 0.0181g, the solder is just enough to seal the gap between the first and second end caps and the ceramic tube, thus ensuring good sealing between the first and second end caps and the ceramic tube.

[0055] 3. The coordinated use of the processing table, ceramic tube feeding assembly, first end cap feeding assembly, melt installation assembly, flipping assembly, auxiliary heating assembly, and unloading assembly facilitates the automated production of anti-sulfurization fuses. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of the structure of an anti-sulfurization fuse in an embodiment of this application.

[0057] Figure 2 This is a flowchart of a manufacturing process for an anti-sulfurization fuse according to an embodiment of this application.

[0058] Figure 3 This is a top view of a sulfur-resistant fuse manufacturing equipment according to an embodiment of this application.

[0059] Figure 4 This is a schematic diagram of the structure of the ceramic tube feeding assembly in the embodiments of this application.

[0060] Figure 5 This is a schematic diagram of the structure of the first end cap feeding assembly and the melt mounting assembly in the embodiments of this application.

[0061] Figure 6 This is a schematic diagram of the structure of the flipping component and the auxiliary heating component in the embodiments of this application.

[0062] Figure 7 This is a schematic diagram of the structure of the second end cap feeding assembly in the embodiments of this application.

[0063] Figure 8 This is a schematic diagram of the structure of the second end cap vibrating disk and the second welded component in the embodiments of this application.

[0064] Explanation of reference numerals in the attached figures:

[0065] 101. Ceramic tube; 102. Melt; 103. First end cap; 104. Second end cap; 1. Processing table; 11. Rotating table; 12. Clamping hand; 2. Ceramic tube feeding assembly; 21. Ceramic tube vibratory plate; 22. Ceramic tube feeding robot; 3. First end cap feeding assembly; 31. First end cap vibratory plate; 32. First end cap feeding plate; 33. Feeding groove; 34. Abutment plate; 4. Melt installation assembly; 41. Melt feeding component; 42. First welded component; 5. Tilting assembly; 51. Lifting cylinder; 52. Lifting seat; 53. Telescopic cylinder; 54. Rotating robot; 6. Auxiliary heating assembly; 61. Elastic heating plate; 62. Drive rod; 7. Second end cap feeding assembly; 71. Second end cap vibratory plate; 72. Second end cap feeding plate; 73. Installation groove; 74. Second welded component; 8. Unloading assembly. Detailed Implementation

[0066] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0067] This application discloses a manufacturing process for an anti-sulfurization fuse.

[0068] Reference Figure 1 and Figure 2 A manufacturing process for an anti-sulfurization fuse includes providing a ceramic tube 101, a fusible element 102, a first end cap 103, and a second end cap 104, both of which are filled with solder. The process involves: first end cap installation → first end cap welding → auxiliary heating → second end cap installation → second end cap welding to complete the manufacturing of the anti-sulfurization fuse. The first end cap 103 and the second end cap 104 connect the two ends of the ceramic tube 101, and the solder connects the first end cap 103 and the second end cap 104 electrically to the fusible element 102. The solder also seals the gaps between the first end cap 103 and the second end cap 104 and the ceramic tube 101, thus completely separating the fusible element 102 from the external environment within the ceramic tube 101. This provides the fuse with excellent sealing properties, allowing it to adapt to different environments.

[0069] The first end cap installation, specifically:

[0070] The first end cap 103 is fitted onto one side of the ceramic tube 101, and there is a gap between the inner wall of the first end cap 103 and the outer wall of the ceramic tube 101. Then the molten material 102 passes through the ceramic tube 101 from the end away from the first end cap 103 until it abuts against the solder inside the first end cap 103.

[0071] The first end cap welding, specifically:

[0072] The first end cap 103 is heated to a temperature of 340℃-350℃ until the solder on the first end cap 103 melts and connects with the molten body 102, and the molten solder flows into the gap between the first end cap 103 and the ceramic tube 101.

[0073] Auxiliary heating, specifically;

[0074] The first end cap 103 is heated to a temperature of 250℃-270℃ to maintain the temperature of the end cap.

[0075] The second end cap installation is specifically as follows:

[0076] The second end cap is installed on the side of the ceramic tube 101 away from the first end cap 103, and there is a gap between the inner wall of the second end cap 104 and the outer wall of the ceramic tube 101.

[0077] The second end cap welding is specifically as follows:

[0078] The second end cap 104 is heated to a temperature of 340℃-350℃ until the solder on the second end cap 104 melts and connects with the molten body 102, and the molten solder flows into the gap between the second end cap 104 and the ceramic tube 101.

[0079] During the soldering of the first end cap, the heating temperature is 340℃-350℃ and the heating time is 1.2S-1.7S, so that the solder inside the first end cap 103 can be fully melted. During the auxiliary heating process of the first end cap 103, the solder inside the first end cap 103 can be fully melted and flowed.

[0080] In this embodiment, the heating temperature for welding the first end cap is 345°C and the heating time is 1.5 seconds. At this temperature, the solder has good fluidity, which allows the solder to flow fully into the gap between the first end cap 103 and the ceramic tube 101. In other embodiments, the heating temperature for welding the first end cap can be 340°C and the heating time can be 1.7 seconds; or the heating temperature for welding the first end cap can be 350°C and the heating time can be 1.2 seconds.

[0081] During auxiliary heating, the heating temperature is 250℃-270℃, and the heating time is 1S-2S. In this embodiment, the auxiliary heating temperature is 260℃, and the heating time is 1.5S. During the auxiliary heating process of the first end cap 103, the solder inside the first end cap 103 can slow down the solidification time, thereby allowing it to melt and flow fully.

[0082] In other embodiments, the auxiliary heating temperature may be 270°C and the heating time may be 1 second; or the heating temperature may be 250°C and the heating time may be 2 seconds.

[0083] During the welding of the second end cap, the heating temperature is 340℃-350℃, and the heating time is 0.2S-0.3S. In this embodiment, the heating temperature for welding the second end cap is 345℃, and the heating time is 0.25S. Due to the welding of the first end cap and auxiliary heating, the welding time of the second end cap 104 is shorter than the welding time of the first end cap 103.

[0084] In other embodiments, the heating temperature for welding the second end cap may be 350°C and the heating time may be 0.2 seconds; or the heating temperature for welding the second end cap may be 340°C and the heating time may be 0.3 seconds.

[0085] By utilizing the welding of the first end cap, auxiliary heating, and welding of the second end cap, the solder can flow sufficiently within the gap between the first end cap 103 and the second end cap 104 and the ceramic tube 101, thereby sealing the gap between the first end cap 103 and the second end cap 104 and the ceramic tube 101.

[0086] The gap between the inner wall of the first end cap 103 and the outer wall of the ceramic tube 101 is 0.01mm-0.03mm, and the gap between the inner wall of the second end cap 104 and the outer wall of the ceramic tube 101 is also 0.01mm-0.03mm. In this embodiment, the gap between the first end cap 103 and the second end cap 104 and the ceramic tube 101 is 0.02mm. By controlling the gaps between the first end cap 103 and the second end cap 104 and the ceramic tube 101, the solder can easily fill the gaps between the first end cap 103 and the second end cap 104 and the ceramic tube 101, and it is also less likely that the solder between the first end cap 103 and the second end cap 104 and the ceramic tube 101 will be hollow, resulting in a better sealing effect between the first end cap 103 and the second end cap 104 and the ceramic tube 101.

[0087] In other embodiments, the gap between the inner wall of the first end cap 103 and the outer wall of the ceramic tube 101 can be controlled to be 0.02 mm, and the gap between the inner wall of the second end cap 104 and the outer wall of the ceramic tube 101 can be controlled to be 0.01 mm; or the gap between the inner wall of the first end cap 103 and the outer wall of the ceramic tube 101 can be controlled to be 0.03 mm, and the gap between the inner wall of the second end cap 104 and the outer wall of the ceramic tube 101 can be controlled to be 0.03 mm, etc.

[0088] In this embodiment, the outer wall cross-section of the ceramic tube 101 has a side length of 2.16 mm, the inner wall cross-section of the first end cap 103 and the second end cap 104 both have a side length of 2.2 mm, the gap between the inner wall of the first end cap 103 and the outer wall of the ceramic tube 101 is 0.02 mm, the gap between the inner wall of the second end cap 104 and the outer wall of the ceramic tube 101 is 0.02 mm, and the amount of solder in the first end cap 103 and the second end cap 104 is 0.0181 g.

[0089] By limiting the side length of the outer wall section of the ceramic tube 101 to 2.16 mm, and the side length of the inner wall section of the first end cap 103 and the second end cap 104 to 2.2 mm, and ensuring that the gap between the inner wall of the first end cap 103 and the outer wall of the ceramic tube 101 is 0.02 mm, and filling the first end cap 103 and the second end cap 104 with 0.0181 g of solder, the solder is just enough to seal the gap between the first end cap 103 and the second end cap 104 and the ceramic tube 101, thus achieving good sealing between the first end cap 103 and the second end cap 104 and the ceramic tube 101.

[0090] The implementation principle of the anti-sulfurization fuse manufacturing process in this application embodiment is as follows: First, a first end cap 103 is fitted onto one side of a ceramic tube 101, with gaps between the inner wall of the first end cap 103 and the outer wall of the ceramic tube 101. Then, a molten material 102 is inserted into the ceramic tube 101 from the end away from the first end cap 103 until it abuts against the solder inside the first end cap 103. Next, the first end cap 103 is heated to 345°C for 1.5 seconds until the solder melts and becomes fluid. The molten solder connects the first end cap 103 and the molten material 102, and the molten solder flows and fills the gaps between the inner wall of the first end cap 103 and the outer wall of the ceramic tube 101, resulting in a better seal between the first end cap 103 and the ceramic tube 101.

[0091] Next, the first end cap 103 is heated to 260°C for 1.5 seconds to maintain the temperature of the end cap, thereby allowing the solder inside the end cap to flow fully and fill the gap between the inner wall of the first end cap 103 and the outer wall of the ceramic tube 101.

[0092] Then, the second end cap is installed on the side of the ceramic tube 101 away from the first end cap 103, and there is a gap between the inner wall of the second end cap 104 and the outer wall of the ceramic tube 101. Next, the second end cap 104 is heated at 345°C for 0.25 seconds. During the heating process, the solder melts and has good fluidity. The molten solder connects the second end cap 104 to the molten body 102, and the molten solder flows and fills the gap between the inner wall of the second end cap 104 and the outer wall of the ceramic tube 101, so that the connection between the first end cap 103 and the ceramic tube 101 is better sealed.

[0093] The two ends of the ceramic tube 101 are connected by the first end cap 103 and the second end cap 104, and the first end cap 103 and the second end cap 104 are electrically connected to the fusible element 102 by soldering. The gaps between the first end cap 103 and the second end cap 104 and the ceramic tube 101 are sealed by soldering, so that the fusible element 102 is completely separated from the external environment inside the ceramic tube 101. This gives the fuse good sealing performance to adapt to different environments.

[0094] This application discloses an apparatus for manufacturing anti-sulfurization fuses.

[0095] Reference Figure 1 and Figure 3A manufacturing equipment for anti-sulfurization fuses includes a processing table 1, a ceramic tube feeding assembly 2, a first end cap feeding assembly 3, a molten material mounting assembly 4, a flipping assembly 5, an auxiliary heating assembly 6, and a discharging assembly 8. The ceramic tube feeding assembly 2, the first end cap feeding assembly 3, the molten material mounting assembly 4, the flipping assembly 5, the auxiliary heating assembly 6, the first end cap feeding assembly 3, and the discharging assembly 8 are arranged sequentially around a rotating table 11. The ceramic tube 101, molten material 102, first end cap 103, and second end cap 104 are assembled using the ceramic tube feeding assembly 2, the first end cap feeding assembly 3, the molten material mounting assembly 4, the flipping assembly 5, the auxiliary heating assembly 6, the first end cap feeding assembly 3, and the discharging assembly 8, facilitating the automated production of anti-sulfurization fuses.

[0096] A rotating table 11 is rotatably connected to the processing table 1. Multiple grippers 12 are installed on the periphery of the rotating table 11. In this embodiment, there are 7 grippers 12. The 7 grippers 12 are respectively set to correspond one-to-one with the ceramic tube feeding assembly 2, the first end cap feeding assembly 3, the melt installation assembly 4, the flipping assembly 5, the auxiliary heating assembly 6, the first end cap feeding assembly 3, and the unloading assembly 8. In other embodiments, the number of grippers 12 can be set to 8 or 9 according to design requirements. In this embodiment, the grippers 12 are common pneumatic grippers.

[0097] Reference Figure 4 The ceramic tube feeding assembly 2 includes a ceramic tube vibrating plate 21 and a ceramic tube feeding robot 22. The ceramic tube vibrating plate 21 is installed on one side of the rotating table 11. The ceramic tube vibrating plate 21 in this embodiment is the prior art. It will not be described in detail in this embodiment. For detailed working principle, please refer to CN220533326U and CN110788586A.

[0098] The discharge port of the ceramic tube vibrating plate 21 is located above the ceramic tube loading robot 22. The ceramic tube loading robot 22 is used to move the ceramic tube 101 onto the clamping hand 12. In this embodiment, a cylinder is provided at the end of the ceramic tube loading robot 22 away from the clamping hand 12. After the ceramic tube is clamped at the discharge port of the ceramic tube vibrating plate 21 by the ceramic tube loading robot 22, the ceramic tube loading robot 22 moves toward the clamping hand 12 to move the ceramic tube 101 onto the clamping hand 12, so that the clamping hand 12 clamps it.

[0099] Reference Figure 5 The first end cap feeding assembly 3 includes a first end cap vibrating plate 31 and a first end cap feeding plate 32. The first end cap vibrating plate 31 is installed on one side of the rotating table 11. The first end cap vibrating plate 31 in this embodiment is the prior art. It will not be described in detail in this embodiment. For detailed working principle, please refer to CN220533326U and CN110788586A.

[0100] The first end cap feeding plate 32 is rotatably connected to the processing table 1. The discharge port of the first end cap vibrating plate 31 is located on the upper side of the first end cap feeding plate 32. The first end cap feeding plate 32 is provided with a feeding groove 33 around the axis. The path of the feeding groove 33 passes through the discharge port of the first end cap vibrating plate 31 and also passes under the gripper 12. A cylinder is also provided under the gripper 12. A feeding block is connected to the cylinder. The feeding block can move into the feeding groove 33. When the first end cap 103 located in the feeding groove 33 moves to the lower side of the ceramic tube 101 on the gripper 12, the cylinder drives the feeding block to push the first end cap 103 from the bottom of the feeding groove 33 to be sleeved on the ceramic tube 101.

[0101] A stop plate 34 is provided on one side of the processing table 1. When the first end cap 103 is sleeved on the ceramic tube 101, the clamping hand 12 continues to rotate. At this time, the stop plate 34 abuts against the bottom of the first end cap 103, thereby preventing the first end cap 103 from detaching from the ceramic tube 101.

[0102] The melt mounting assembly 4 includes a melt loading component 41 and a first welding component 42. The melt loading component 41 is mounted on one side of the rotating table 11. The melt loading component 41 in this embodiment is prior art and will not be described in detail in this embodiment. For detailed working principles, please refer to CN220533326U and CN110788586A.

[0103] The first welding component 42 is located at the feeding point of the melt feeding component 41. In this embodiment, the first welding component 42 is an electric heating plate. The electric heating plate is located below the first end cap 103 when the clamping hand 12 installs the melt 102. When the melt feeding component 41 inserts the melt 102 into the ceramic tube 101, the electric heating plate heats the first end cap 103 on the clamping hand 12.

[0104] Reference Figure 6 The flipping assembly 5 includes a lifting cylinder 51, a lifting seat 52, two telescopic cylinders 53 arranged vertically in parallel, and a rotary manipulator 54 fixedly connected to the piston rod of the telescopic cylinder 53. The lifting cylinder 51 is fixedly connected to the processing table 1, the lifting seat 52 is fixedly connected to the piston rod of the lifting cylinder 51, and the telescopic cylinder 53 is fixedly connected to the lifting seat 52.

[0105] When the gripper 12 rotates to the bottom of the flipping assembly 5, the lifting seat 52 and the telescopic cylinder 53 jointly drive the lower rotating manipulator 54 to grip the ceramic tube 101. Then, the ceramic tube 101 is rotated 180°, and the upper rotating manipulator 54 is driven to grip the ceramic tube 101. Then, the lifting seat 52 moves the upper rotating manipulator 54 onto the gripper 12.

[0106] The auxiliary heating assembly 6 includes an elastic heating plate 61 and a drive rod 62. One end of the elastic heating plate 61 is fixedly connected to the processing table 1. The elastic heating plate 61 is located above the clamping hand 12. The drive rod 62 is located above the elastic heating plate 61. A cylinder is provided on the side of the drive rod 62 away from the elastic heating plate 61. The cylinder drives the drive rod 62 to move, thereby using the drive rod 62 to press the elastic heating plate 61 against the component on the clamping hand 12.

[0107] When the gripper 12 rotates to the underside of the elastic heating plate 61, the drive rod 62 abuts against the elastic heating plate 61, causing the elastic heating plate 61 to abut against the first end cap 103 on the gripper 12, thereby heating the first end cap 103 using the elastic heating plate 61.

[0108] Reference Figure 7 and Figure 8 The second end cap feeding assembly 7 includes a second end cap vibrating plate 71 and a second end cap feeding plate 72. The second end cap vibrating plate 71 is installed on one side of the rotating table 11, and the second end cap feeding plate 72 is rotatably connected to the processing table 1. The discharge port of the second end cap vibrating plate 71 is located on the upper side of the second end cap feeding plate 72. The second end cap feeding plate 72 has an installation groove 73 around its axis. The path of the installation groove 73 passes through the discharge port of the second end cap vibrating plate 71 and also passes under the gripper 12 to install the second end cap 104 on the ceramic tube 101 on the gripper 12. The bottom of the second end cap feeding plate 72 is provided with a second welding part 74, which is used to heat the second end cap 104 on the gripper 12.

[0109] The second welded component 74 includes a lifting cylinder and a lifting block. The lifting cylinder is located at the point where the mounting groove 73 and the clamping hand 12 overlap vertically. The lifting block is located on the piston rod of the lifting cylinder and is situated within the mounting groove 73. An electric heating element is connected to the lifting block to heat it. When the clamping hand 12 moves the ceramic tube 101 directly above the mounting groove 73, the lifting cylinder drives the lifting block to place the second end cap 104 onto the ceramic tube, while simultaneously heating the lifting block.

[0110] By cooperating with the lifting cylinder and the lifting block, when installing the second end cap 104, not only can the second end cap 104 be fitted onto the ceramic tube 101, but the heating element can also heat the lifting block, which in turn heats the second end cap 104, making it easier to weld the second end cap 104 onto the ceramic tube 101.

[0111] The unloading assembly 8 is installed on one side of the rotating table 11. The unloading assembly 8 is a conventional unloading robot used to unload the components held by the gripper 12.

[0112] During the rotation of the rotating table 11, the gripper 12 passes above the ceramic tube feeding robot 22. At this time, the ceramic tube feeding robot 22 transfers the ceramic tube 101 stored in the ceramic tube vibrating plate 21 to the gripper 12. The gripper 12 continues to rotate under the drive of the rotating table 11, so that the gripper 12 rotates to the top of the feeding plate. The feeding groove 33 on the feeding plate receives the first end cap 103 that is fed from the first end cap vibrating plate 31. The first end cap 103 is rotated to the bottom of the ceramic tube 101 on the gripper 12. Then the feeding plate presses the first end cap 103 against the ceramic tube 101, so that the first end cap 103 is fitted on the ceramic tube 101.

[0113] The clamping hand 12 continues to rotate under the drive of the rotating table 11, causing the ceramic tube 101 on the clamping hand 12 to rotate to the lower side of the melt loading component 41. The melt loading component 41 installs the melt 102 inside the ceramic tube 101, and the bottom of the melt 102 abuts against the solder inside the first end cap 103. Then, the first welding component 42 heats the first end cap 103, causing the solder inside the first end cap 103 to melt, thereby welding the first end cap 103 and the melt 102 together. At the same time, the solder also flows into the gap between the first end cap 103 and the ceramic tube 101. Then, it continues to rotate to the flipping component 5, using the flipping component 5 to flip the first end cap 103 and the ceramic tube 101 180°. Then, the rotating table 11 continues to rotate, moving the clamping hand 12 to the auxiliary heating component 6, using the auxiliary heating component 6 to continue to heat the first end cap 103, so that the solder inside the first end cap 103 can continue to flow.

[0114] The clamping hand 12 then rotates to above the second end cap loading tray 72. The second end cap 104, received from the second end cap vibrating plate 71 in the mounting groove 73 on the second end cap loading tray 72, rotates to below the clamping hand 12, and places the second end cap 104 onto the ceramic tube 101. Next, the second welding component 74 heats the second end cap 104, melting the solder inside, thus welding the second end cap 104 to the molten material 102. Simultaneously, the solder flows into the gap between the second end cap 104 and the ceramic tube 101. Finally, the clamping hand 12 rotates to the unloading component 8, transferring the welded ceramic tube 101 off the clamping hand 12.

[0115] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A manufacturing process for an anti-sulfurization fuse, characterized in that, include: A ceramic tube (101), a melt (102), a first end cap (103), and a second end cap (104) are provided, both the first end cap (103) and the second end cap (104) being filled with solder; First end cap installation: The first end cap (103) is fitted onto one side of the ceramic tube (101), and there is a gap between the inner wall of the first end cap (103) and the outer wall of the ceramic tube (101). Then the molten material (102) passes through the ceramic tube (101) from the side away from the first end cap (103) until it abuts against the solder inside the first end cap (103). The first end cap is welded by heating the first end cap (103) to a temperature of 340℃-350℃ until the solder on the first end cap (103) melts and connects with the melt (102), and the melted solder flows into the gap between the first end cap (103) and the ceramic tube (101). Auxiliary heating is used to heat the first end cap (103) to a temperature of 250℃-270℃, so that the first end cap (103) maintains its temperature. The second end cap is installed on the side of the ceramic tube (101) away from the first end cap (103), and there is a gap between the inner wall of the second end cap (104) and the outer wall of the ceramic tube (101). The second end cap is welded by heating the second end cap (104) to a temperature of 340℃-350℃ until the solder on the second end cap (104) melts and connects with the melt (102), and the melted solder flows into the gap between the second end cap (104) and the ceramic tube (101). The gap between the inner wall of the first end cap (103) and the outer wall of the ceramic tube (101) is 0.01mm-0.03mm; the gap between the inner wall of the second end cap (104) and the outer wall of the ceramic tube (101) is 0.01mm-0.03mm. The outer wall cross-section of the ceramic tube (101) is rectangular, and the side length of the outer wall cross-section of the ceramic tube (101) is 2.14mm-2.18mm; the inner wall cross-section of the first end cap (103) is also rectangular, and the side length of the inner wall cross-section of the first end cap (103) is 2.16mm-2.2mm. The dimensions of the inner wall cross-section of the first end cap (103) and the inner wall cross-section of the second end cap (104) are the same, and the amount of solder in the first end cap (103) and the second end cap (104) is 0.018g-0.02g.

2. The manufacturing process of the anti-sulfurization fuse according to claim 1, characterized in that: The heating time for welding the first end cap is 1.2S-1.7S; The heating time for the auxiliary heating is 1-2 seconds. The heating time for welding the second end cap is 0.2S-0.3S.

3. The manufacturing process of the anti-sulfurization fuse according to claim 1, characterized in that: The heating temperature for welding the first end cap is 345℃, and the heating time is 1.5 seconds. The auxiliary heating temperature is 260℃, and the heating time is 1.5 seconds. The heating temperature for welding the second end cap is 345℃, and the heating time is 0.25s.

4. The manufacturing process of the anti-sulfurization fuse according to claim 1, characterized in that: The outer wall cross-section of the ceramic tube (101) has a side length of 2.16 mm. The inner wall cross-sections of the first end cap (103) and the second end cap (104) both have a side length of 2.2 mm. The gap between the inner wall of the first end cap (103) and the outer wall of the ceramic tube (101) is 0.02 mm. The gap between the inner wall of the second end cap (104) and the outer wall of the ceramic tube (101) is 0.02 mm. The amount of solder in the first end cap (103) and the second end cap (104) is 0.0181 g.

5. A device for manufacturing anti-sulfurization fuses, characterized in that, The manufacturing process of the anti-sulfurization fuse according to any one of claims 1-4 includes: A processing table (1) is rotatably connected to a rotating table (11), and a plurality of grippers (12) are installed on the periphery of the rotating table (11). The ceramic tube feeding assembly (2) includes a ceramic tube vibrating plate (21) and a ceramic tube feeding robot (22). The ceramic tube vibrating plate (21) is installed on one side of the rotating table (11). The discharge port of the ceramic tube vibrating plate (21) is located on the upper side of the ceramic tube feeding robot (22). The ceramic tube feeding robot (22) is used to move the ceramic tube (101) onto the clamping hand (12). The first end cap feeding assembly (3) includes a first end cap vibrating plate (31) and a first end cap feeding plate (32). The first end cap vibrating plate (31) is installed on one side of the rotating table (11), and the first end cap feeding plate (32) is rotatably connected to the processing table (1). The discharge port of the first end cap vibrating plate (31) is located on the upper side of the first end cap feeding plate (32). The first end cap feeding plate (32) has a feeding groove (33) around its axis. The path of the feeding groove (33) passes through the discharge port of the first end cap vibrating plate (31) and also passes under the gripper (12) to install the first end cap (103) on the ceramic tube (101) on the gripper (12). The melt loading assembly (4) includes a melt loading component (41) and a first welding component (42). The melt loading component (41) is installed on one side of the rotating table (11), and the first welding component (42) is located at the loading point of the melt loading component (41). The melt loading component (41) is used to pass the melt (102) through the ceramic tube (101), and the first welding component (42) is located on the movement path of the clamping hand (12). The first welding component (42) is used to heat the first end cap (103) on the clamping hand (12). A flipping assembly (5) is installed on the processing table (1) and is used to flip the ceramic tube (101) 180 degrees. An auxiliary heating component (6) is installed on the processing table (1) and is used to heat the first end cap (103). The second end cap feeding assembly (7) includes a second end cap vibrating plate (71) and a second end cap feeding plate (72). The second end cap vibrating plate (71) is installed on one side of the rotating table (11), and the second end cap feeding plate (72) is rotatably connected to the processing table (1). The discharge port of the second end cap vibrating plate (71) is located on the upper side of the second end cap feeding plate (72). The second end cap feeding plate (72) has an installation groove (73) around its axis. The path of the installation groove (73) passes through the discharge port of the second end cap vibrating plate (71) and also passes under the gripper (12) to install the second end cap (104) on the ceramic tube (101) on the gripper (12). The bottom of the second end cap feeding plate (72) is provided with a second welding part (74), which is used to heat the second end cap (104) on the gripper (12). A feeding assembly (8) is installed on one side of the rotating table (11). The feeding assembly (8) is used to feed components held by the gripper (12) into the rotating table (11). The ceramic tube feeding assembly (2), the first end cap feeding assembly (3), the melt installation assembly (4), the flipping assembly (5), the auxiliary heating assembly (6), the second end cap feeding assembly (7), and the unloading assembly (8) are arranged sequentially around the rotating table (11).

6. The equipment for manufacturing anti-sulfurization fuses according to claim 5, characterized in that: The flipping assembly (5) includes a lifting cylinder (51), a lifting seat (52), two telescopic cylinders (53) arranged in parallel vertical directions, and a rotary manipulator (54) fixedly connected to the piston rod of the telescopic cylinder (53). The lifting cylinder (51) is fixedly connected to the processing table (1), the lifting seat (52) is fixedly connected to the piston rod of the lifting cylinder (51), and the telescopic cylinder (53) is fixedly connected to the lifting seat (52).

7. The equipment for manufacturing anti-sulfurization fuses according to claim 5, characterized in that: The auxiliary heating assembly (6) includes an elastic heating plate (61) and a drive rod (62). One end of the elastic heating plate (61) is fixedly connected to the processing table (1). The elastic heating plate (61) is located on the upper side of the clamping hand (12). The drive rod (62) is located on the upper side of the elastic heating plate (61) to abut against the elastic heating plate (61) and onto the components on the clamping hand (12).

8. The equipment for manufacturing anti-sulfurization fuses according to claim 5, characterized in that: The second welded component (74) includes a lifting cylinder and a lifting block. The lifting cylinder is located at the point where the mounting groove (73) and the clamping hand (12) overlap vertically. The lifting block is located on the piston rod of the lifting cylinder and is located in the mounting groove (73). An electric heating element is connected to the lifting block to heat it.

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