Aluminum shell resistor and processing device thereof

Abstract

The present invention discloses an aluminum shell resistor and a processing device thereof, comprising an aluminum shell and a resistor core, wherein the resistor core is fixedly installed in the middle position of the inner side of the aluminum shell, screws are fixedly installed in the middle position of the outer surfaces of both ends of the resistor core, connecting pieces used in conjunction with the screws are fixedly installed at both ends of the aluminum shell, quartz sand is filled between the aluminum shell and the resistor core, a cylindrical mica block is installed between the screw and the resistor core, the screw and the connecting piece, as well as the screw and the resistor core, are fixed by nuts, an elastic gasket is provided between the screw and the nut, sealing materials are provided on the inner sides of both ends of the aluminum shell, and alloy wire is wound around the outer surface of the resistor core; the screw is used as the lead-out structure, and the two ends are changed to slurry packaging, which increases product reliability, fixes the resistor core in the middle position of the aluminum shell, prevents the problem of voltage resistance reduction caused by the movement of the resistor core during production, and improves voltage resistance performance.

Description

Technical Field

[0001] The present invention belongs to the field related to resistor processing technology, and more specifically relates to an aluminum shell resistor and a processing device thereof. Background Art

[0002] With economic development and social progress, the requirements for resistors in various industrial production fields are becoming increasingly stringent. This product is suitable for large-scale machinery and equipment, load testing, power supplies, inverters, servo motors, and other demanding and harsh industrial control environments. Its main features include high power, secure installation, vibration resistance, good heat dissipation, and attractive appearance, making it an ideal supporting product for power electronics.

[0003] Patent document CN112750583B describes an aluminum-shell resistor comprising an aluminum shell, which is a hollow square tube with a mica frame disposed in the center of the aluminum shell; alloy wire wound around the outer side of the mica frame; welding caps disposed at both ends of the mica frame; lead tabs disposed outside the two welding caps; end caps disposed at both ends of the aluminum shell; and lead tabs extending beyond the end caps; the alloy wire, welding caps, and lead tabs are welded to each other. When not in use, the lead tabs at both ends can be covered to protect and prevent dust from forming. When in use, the lead tabs can be exposed via a second rotating shaft, thereby preventing any impact on the lead tabs. Furthermore, through the coordination of a first gear, the tooth surface of the lead tab, and a first tooth plate, the lead tab's lead length can be adaptively adjusted to meet applicable requirements, avoiding excessive exposure and preventing the impact of external impact on the lead tabs.

[0004] Usually, this type of resistor product consists of a resistor core and lead wires. The resistor core is directly placed inside the aluminum shell and filled with heat-resistant filler, which makes it difficult to center the internal resistor core, reducing the insulation performance of the product. The product is led out by high-temperature leads, which are easily damaged during production and transportation, and can easily cause product performance degradation and scrapping, reducing the shock resistance and stability of the resistor; secondly, during the processing of aluminum shell resistors, sand is poured to fill the space between the aluminum shell and the resistor core, but traditional devices cannot complete the sand filling operation of multiple groups of aluminum shell resistors at the same time. After the sand filling operation, the internal compactness of the quartz sand is poor. Under the action of external force, the internal quartz sand of the aluminum shell resistor is prone to shaking, making it impossible for the quartz sand to tightly wrap the resistor core, reducing its heat dissipation effect and affecting the stability of the aluminum shell resistor during use. Summary of the Invention

[0005] The purpose of the present invention is to provide an aluminum shell resistor and a processing device thereof, which can solve the existing problems.

[0006] The problems solved by the present invention are:

[0007] 1. Usually, this type of resistor product consists of a resistor core and lead wires. The resistor core is directly placed inside the aluminum shell and filled with heat-resistant fillers, which makes it difficult to center the internal resistor core, reducing the insulation performance of the product. The product is led out by high-temperature leads, which are easily damaged during production and transportation, and can easily cause product performance degradation and scrapping, reducing the shock resistance and stability of the resistor; secondly, during the processing of aluminum shell resistors, sand is poured to fill the space between the aluminum shell and the resistor core. However, traditional devices cannot complete the sand filling operation of multiple groups of aluminum shell resistors at the same time. After the sand filling operation, the internal compactness of the quartz sand is poor. Under the action of external force, the internal quartz sand of the aluminum shell resistor is prone to shaking, making it impossible for the quartz sand to tightly wrap the resistor core, reducing its heat dissipation effect and affecting the stability of the aluminum shell resistor during use.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] An aluminum shell resistor comprises an aluminum shell and a resistor core, wherein the resistor core is fixedly mounted in the middle of the inner side of the aluminum shell, screws are fixedly mounted in the middle of the outer surfaces of both ends of the resistor core, connecting pieces for use with the screws are fixedly mounted at both ends of the aluminum shell, quartz sand is filled between the aluminum shell and the resistor core, and a cylindrical mica block is mounted between the screw and the resistor core.

[0010] As a further technical solution of the present invention, the screw and the connecting piece as well as the screw and the resistor core are fixed by nuts, an elastic gasket is provided between the screw and the nut, sealing materials are provided on the inner sides of both ends of the aluminum shell, and the outer surface of the resistor core is wrapped with alloy wire. The original aluminum shell resistors mostly use high-temperature wire as the lead-out structure, and the wire is easily damaged, resulting in a decrease in electrical performance. The aluminum shell resistor uses a screw as the lead-out structure, and the two ends are changed to slurry packaging, and the sealing material is slurry, which increases product reliability. Compared with traditional high-temperature wires, the screw will not break or break. Secondly, the resistor core is fixed in the middle position of the aluminum shell by positioning the cylindrical mica block and the screw and mica internally, and quartz sand is filled at the same time to support and fix the resistor core and the aluminum shell, so that the resistor core is fixed in the internal position of the aluminum shell, thereby preventing the problem of reduced voltage resistance due to the movement of the resistor core during the production process, and improving the voltage resistance performance.

[0011] As a further technical solution of the present invention, it includes a fixed base and a sand filling box, the sand filling box is fixedly installed above the fixed base, and a storage box is fixedly installed on the outer surface of one side of the fixed base, and a limit clamp for loading the aluminum shell is installed in the middle position of the upper end of the fixed base, and both ends of the limit clamp are provided with a concave groove for cooperating with the screw, and a sand filling part is movably installed in the middle of the lower end of the sand filling box. When the aluminum shell resistor is sand-filled, the processing device can be used to complete the sand filling operation of three groups of aluminum shell resistors at one time. The user respectively inserts the aluminum shells of the three groups of aluminum shell resistors into the three notches of the limit clamp, and then clamps the extended screw in the concave groove. The three groups of lifting nozzles can be used to simultaneously fill the interior of the three groups of aluminum shells with sand, and the aluminum shell can be taken out from the limit clamp by the screw.

[0012] As a further technical solution of the present invention, a collecting tray for use with a limiting card seat is provided in the middle of the upper end of the fixed base. The collecting tray has an overall concave structure, and the inner discharge port of the collecting tray, the collecting tray and the limiting card seat are elastically connected by a spring. After quartz sand is poured between the aluminum shell and the resistor core, in order to make the quartz sand more compact, the vibrator is started to drive the limiting card seat to vibrate, thereby causing the aluminum shell in the limiting card seat to vibrate. The quartz sand in the aluminum shell continuously collides under the action of vibration and seeks a more stable equilibrium position. Since the surface of the quartz sand is rough and the shape is irregular, they will get stuck to each other, such as the concave and convex parts complement each other, thereby reducing the gaps between the particles, increasing the overall density, and improving the sand filling effect in the aluminum shell. It avoids the quartz sand in the aluminum shell from shaking under the action of external force, and the excess quartz sand will be collected through the discharge port of the collecting tray.

[0013] As a further technical solution of the present invention, a vibrator is fixedly installed at the middle position of the outer surface of the lower end of the limiting bracket, and a return pipe is fixedly installed at the bottom of the collecting tray. The feed end of the return pipe is connected to the discharge port of the collecting tray, and the discharge end of the return pipe is placed on the inner side of the storage box. When the sand filling part performs sand filling operation on the interior of the aluminum shell, part of the quartz sand will overflow outward, and the collecting tray can be used to collect the overflowed quartz sand. The inclined structure on the inner side of the collecting tray allows the quartz sand to slide down to the discharge port and enter the interior of the return pipe, and is discharged into the storage box again through the inclined return pipe. The storage box set at the bottom can facilitate users to add quartz sand.

[0014] As a further technical solution of the present invention, the bottom of the limit card seat is provided with a sealing card cover used in conjunction with the collection tray, and the upper end of the collection tray is provided with a docking part used in conjunction with the sealing card cover. The overall docking part is in a mouth-shaped structure. In order to prevent the quartz sand in the collection tray from being discharged from the central gap, the docking part and the sealing card cover are provided so that the docking part and the sealing card cover are movably docked up and down, forming a staggered sealing structure between the limit card seat and the collection tray, which can not only ensure the vibration use of the limit card seat, but also prevent the limit card seat from transmitting the vibration to the collection tray.

[0015] As a further technical solution of the present invention, the sand filling part includes three groups of lifting nozzles and telescopic tubes. Three groups of discharge troughs are provided on the inner side of the telescopic tube. The three groups of lifting nozzles are all installed at the lower end of the telescopic tube. The lifting nozzles and the sand filling box are driven by a lifting rod. In order to avoid dust during the sand filling operation, a sand filling part with a lifting structure is set. During the sand filling operation, the lifting rod can be used to drive the telescopic tube to move downward to adjust the use height of the three groups of lifting nozzles. The setting of the three groups of lifting nozzles can simultaneously meet the sand filling operations of three groups of aluminum shell resistors.

[0016] As a further technical solution of the present invention, a main feed roller is movably installed inside the sand filling box, and a driving part is provided in the middle of the sand filling box for use with the sand filling part. The setting of the driving part can simultaneously meet the sand discharge operations of three groups of lifting nozzles, and the setting of the main feed roller can prevent quartz sand from being blocked inside the sand filling box.

[0017] As a further technical solution of the present invention, three groups of secondary feed rollers are movably installed on the inner side of the driving member. One end of the secondary feed rollers and the main feed rollers are independently driven by electric motors. The rotation of the secondary feed rollers and the main feed rollers can be independently controlled by the electric motor, thereby individually controlling the three groups of lifting nozzles.

[0018] As a further technical solution of the present invention, a feeding pipe is provided between the material storage box and the sand filling box, and a feeding auger is movably installed inside the feeding pipe. A discharge nozzle is provided at the upper end of the feeding pipe. The user pours quartz sand into the interior of the material storage box, and drives the feeding auger to operate by a motor, so that the feeding auger drives the quartz sand to move upward, and then is discharged into the interior of the sand filling box through the discharge nozzle, and the sand filling operation is performed from top to bottom through the sand filling box.

[0019] Beneficial effects of the present invention:

[0020] 1. By setting screws and quartz sand, when the aluminum shell resistor is used, the traditional wire connection structure is replaced, so that the resistor core is in a stable and centered state, its insulation performance is improved, and the lead wire is prevented from being damaged during production and transportation;

[0021] During operation, traditional aluminum-cased resistors often use high-temperature wire as the lead-out structure, which is prone to breakage and degraded electrical performance. Aluminum-cased resistors, on the other hand, use screws as the lead-out structure, with both ends encapsulated with slurry. This sealant increases product reliability, and the screw is less susceptible to breakage and fracture than traditional high-temperature wire. Furthermore, the resistor core is secured in the center of the aluminum housing by a cylindrical mica block and the internal positioning of the screw and mica. Quartz sand is also filled in the housing to support and secure the resistor core within the aluminum housing, preventing the voltage drop caused by the resistor core moving during production and improving its withstand voltage performance. The quartz sand fills the gap between the resistor core and the aluminum housing. The main function of sand filling in aluminum-cased resistors is to improve heat dissipation and enhance mechanical stability. Sand filling prevents the resistor core from loosening during transportation or vibration, such as the metal wire or ceramic substrate of a wirewound resistor, preventing poor contact or short circuits caused by displacement. Friction between sand particles absorbs external vibration energy, reducing mechanical stress damage to the resistor's internal structure.

[0022] 2. By setting the limit card seat and the sand filling parts, when the aluminum shell resistor is performing the sand filling operation, it can meet the sand filling operation of multiple groups of aluminum shell resistors at the same time, thereby improving its work efficiency, making the sand filling more compact and improving its sand filling effect;

[0023] When in use, the aluminum shells of the three groups of aluminum shell resistors are respectively inserted into the three notches of the limit card seat, and the extended screw is stuck in the concave groove. The three groups of lifting nozzles can be used to simultaneously fill sand into the interior of the three groups of aluminum shells, and the aluminum shells can be taken out from the limit card seat through the screw. In order to avoid dust during the sand filling operation, a sand filling piece of a lifting structure is set, and during the sand filling operation, the lifting rod is used to drive the telescopic tube downward to adjust the use height of the three groups of lifting nozzles. The setting of the three groups of lifting nozzles can simultaneously meet the sand filling operation of the three groups of aluminum shell resistors. The setting of the driving piece can simultaneously meet the sand discharge operation of the three groups of lifting nozzles, and the setting of the main feeding roller can In order to avoid quartz sand being blocked inside the sand filling box, the motor can independently control the rotation of the secondary feed roller and the main feed roller, thereby individually controlling the three sets of lifting nozzles. By starting the vibrator, the vibrator drives the limit card seat to vibrate, thereby causing the aluminum shell inside the limit card seat to vibrate. Under the action of vibration, the quartz sand in the aluminum shell continuously collides and seeks a more stable equilibrium position. Since the surface of the quartz sand is rough and the shape is irregular, they will get stuck to each other, such as the concave and convex parts complement each other, thereby reducing the gaps between the particles, increasing the overall density, and improving the sand filling effect in the aluminum shell. It avoids the quartz sand in the aluminum shell from shaking under the action of external force, making the quartz sand filling more compact.

[0024] 3. By setting up a collecting tray and a return pipe, the use of the limit holder and the sand filling parts is optimized during the sand filling operation of the aluminum shell resistor, so that it has a sand recovery structure and reduces the subsequent cleaning steps;

[0025] During operation, when the sand filling part is filling sand into the interior of the aluminum shell, some quartz sand will overflow outward, and the collecting tray can be used to collect the overflowed quartz sand. The inclined structure on the inner side of the collecting tray allows the quartz sand to slide down to the discharge port and enter the interior of the return pipe, and is re-discharged into the storage box through the inclined return pipe. The feed auger is driven by a motor to operate, so that the feed auger drives the quartz sand to move upward, and thus is discharged into the interior of the sand filling box through the discharge mouth. The sand filling operation is performed from top to bottom through the sand filling box. Secondly, in order to prevent the quartz sand in the collecting tray from being discharged from the middle gap, a docking part and a sealing card cover are provided, so that the docking part and the sealing card cover are movably docked up and down, and a staggered sealing structure is formed between the limit card seat and the collecting tray, which can not only ensure the vibration use of the limit card seat, but also prevent the limit card seat from transmitting the vibration to the collecting tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of an aluminum shell resistor of the present invention;

[0028] Figure 2 This is a diagram of the internal structure of an aluminum shell resistor of the present invention;

[0029] Figure 3 This is an overall structural diagram of a processing device for aluminum shell resistors of the present invention;

[0030] Figure 4 This is a planar structural diagram of a sand-filling component in a processing device for aluminum shell resistors according to the present invention;

[0031] Figure 5 This is a planar structural diagram of a driving component in a processing device for aluminum shell resistors according to the present invention;

[0032] Figure 6 This is an overall structural diagram of a collecting tray in a processing device for aluminum shell resistors of the present invention;

[0033] Figure 7 This is an overall structural diagram of a limit clamp in a processing device for aluminum shell resistors of the present invention;

[0034] Figure 8 This is a planar structural diagram of a material delivery pipe in a processing device for aluminum shell resistors according to the present invention;

[0035] Figure 9This is a state change diagram of an aluminum shell resistor and a limit clamp in a working device of the present invention when in use;

[0036] Figure 10 This is a diagram showing the internal structure of an aluminum shell resistor and a lifting nozzle in a working device of the present invention;

[0037] Figure 11 The present invention is a diagram showing the state changes of an aluminum shell resistor and a baffle in a working device when the baffle is in use.

[0038] In the figure: 1. Aluminum shell; 2. Screw; 3. Sealing material; 4. Quartz sand; 5. Alloy wire; 6. Resistor core; 7. Elastic gasket; 8. Cylindrical mica block; 9. Nut; 10. Connecting piece; 11. Fixed base; 12. Storage box; 13. Sand filling box; 14. Driving part; 15. Limiting card seat; 16. Collecting tray; 17. Feed pipe; 18. Sand filling part; 19. Discharge nozzle; 20. Main feed roller; 21. Lifting nozzle; 22. Telescopic tube; 23. Lifting rod; 24. Discharge trough; 25. Secondary feed roller; 26. Motor; 27. Return pipe; 28. Spring; 29. ​​Vibrator; 30. Docking part; 31. Sealing card cover; 32. Concave groove; 33. Feeding auger; 34. Top cover; 35. Baffle; 36. Tension spring; 37. Rotating rod; 38. Arc slide. DETAILED DESCRIPTION

[0039] The following will be combined with the embodiments to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0040] like Figure 1 -like Figure 2 As shown, an aluminum shell resistor includes an aluminum shell 1 and a resistor core 6. The resistor core 6 is fixedly installed in the middle position of the inner side of the aluminum shell 1. Screws 2 are fixedly installed in the middle position of the outer surfaces of both ends of the resistor core 6. Connecting pieces 10 used in conjunction with the screws 2 are fixedly installed at both ends of the aluminum shell 1. Quartz sand 4 is filled between the aluminum shell 1 and the resistor core 6. A cylindrical mica block 8 is installed between the screw 2 and the resistor core 6. A top cover 34 is provided at the upper end of the aluminum shell 1. When the interior of the aluminum shell resistor is filled with sand, the top cover 34 at the upper end of the aluminum shell 1 is opened, so that the upper end of the aluminum shell 1 is open, and the sand filling operation is performed above the aluminum shell 1.

[0041] The screw 2 and the connecting piece 10 as well as the screw 2 and the resistor core 6 are fixed by a nut 9. An elastic gasket 7 is provided between the screw 2 and the nut 9. The inner sides of both ends of the aluminum shell 1 are provided with sealing materials 3. The outer surface of the resistor core 6 is wrapped with alloy wire 5. The original aluminum shell resistors mostly use high-temperature wire as the lead-out structure. The wire is easily damaged, resulting in a decrease in electrical performance. The aluminum shell resistor uses the screw 2 as the lead-out structure, and the two ends are changed to slurry packaging. The sealing material 3 is slurry, which increases product reliability. Compared with traditional high-temperature wires, the screw 2 will not break or break. Secondly, the resistor core 6 is fixed in the middle position of the aluminum shell 1 by positioning the cylindrical mica block 8 and the screw 2 and the mica internally. At the same time, quartz sand 4 is filled to support and fix the resistor core 6 and the aluminum shell 1, so that the resistor core 6 is fixed in the internal position of the aluminum shell 1, thereby preventing the problem of reduced voltage resistance due to the movement of the resistor core 6 during the production process and improving the voltage resistance performance.

[0042] like Figure 3 -like Figure 11 As shown, a processing device for aluminum shell resistors includes a fixed base 11 and a sand filling box 13. The sand filling box 13 is fixedly installed above the fixed base 11, and a storage box 12 is fixedly installed on the outer surface of one side of the fixed base 11. A limiting clamping seat 15 for loading the aluminum shell 1 is installed in the middle position of the upper end of the fixed base 11, and both ends of the limiting clamping seat 15 are provided with a concave groove 32 for cooperating with the screw 2. A sand filling piece 18 is movably installed in the middle of the lower end of the sand filling box 13. When the aluminum shell resistor is sanded, the processing device can be used to complete the sand filling operation of three groups of aluminum shell resistors at one time. The user respectively inserts the aluminum shells 1 of the three groups of aluminum shell resistors into the three notches of the limiting clamping seat 15, and then clamps the extended screw 2 in the concave groove 32. The three groups of lifting nozzles 21 can be used to simultaneously fill sand into the interior of the three groups of aluminum shells 1, and the aluminum shell 1 can be taken out from the limiting clamping seat 15 by the screw 2.

[0043] In order to improve the sand filling effect, Figure 6As shown, a collecting tray 16 for use with the limit card seat 15 is provided in the middle part of the upper end of the fixed base 11. The collecting tray 16 has an overall concave structure, and the inner discharge port of the collecting tray 16 is elastically connected to the collecting tray 16 and the limit card seat 15 by a spring 28. After the quartz sand 4 is poured between the aluminum shell 1 and the resistor core 6, in order to make the quartz sand 4 more compact, the vibrator 29 is started so that the vibrator 29 drives the limit card seat 15 to vibrate, thereby causing the aluminum shell 1 in the limit card seat 15 to vibrate. Under the action of vibration, the quartz sand 4 in the aluminum shell 1 continuously collides and seeks a more stable equilibrium position. Since the surface of the quartz sand 4 is rough and the shape is irregular, they will be stuck to each other, such as the concave and convex parts complement each other, thereby reducing the gaps between the particles, improving the overall density, and improving the sand filling effect in the aluminum shell 1. It is avoided that the quartz sand 4 in the aluminum shell 1 shakes under the action of external force, and the excess quartz sand 4 will be collected through the discharge port of the collecting tray 16.

[0044] A vibrator 29 is fixedly installed at the middle position of the outer surface of the lower end of the limiting holder 15, and a return pipe 27 is fixedly installed at the bottom of the collecting tray 16. The feed end of the return pipe 27 is connected to the discharge port of the collecting tray 16, and the discharge end of the return pipe 27 is placed on the inner side of the storage box 12. When the sand filling part 18 performs sand filling operation on the interior of the aluminum shell 1, part of the quartz sand 4 will overflow outward, and the collecting tray 16 can be used to collect the overflowed quartz sand 4. The inclined structure on the inner side of the collecting tray 16 allows the quartz sand 4 to slide down to the discharge port and enter the interior of the return pipe 27, and then be discharged back into the storage box 12 through the inclined return pipe 27. The storage box 12 set at the bottom can facilitate users to add quartz sand 4.

[0045] like Figure 7 As shown, the bottom of the limit card seat 15 is provided with a sealing card cover 31 for use with the collection tray 16, and the upper end of the collection tray 16 is provided with a docking part 30 for use with the sealing card cover 31. The overall docking part 30 is in a mouth-shaped structure. In order to prevent the quartz sand 4 in the collection tray 16 from being discharged from the central gap, the docking part 30 and the sealing card cover 31 are provided, so that the docking part 30 and the sealing card cover 31 are movably docked up and down, and a staggered sealing structure is formed between the limit card seat 15 and the collection tray 16, which can not only ensure that the limit card seat 15 is used in vibration, but also prevent the limit card seat 15 from transmitting the vibration to the collection tray 16.

[0046] like Figure 4As shown, the sand filling component 18 includes three groups of lifting nozzles 21 and telescopic tubes 22. Three groups of discharge troughs 24 are provided on the inner side of the telescopic tubes 22. The three groups of lifting nozzles 21 are all installed at the lower end of the telescopic tubes 22. The lifting nozzles 21 and the sand filling box 13 are driven by a lifting rod 23. In order to avoid dust during the sand filling operation, the sand filling component 18 with a lifting structure is provided. During the sand filling operation, the lifting rod 23 can be used to drive the telescopic tube 22 downward to adjust the use height of the three groups of lifting nozzles 21. The setting of the three groups of lifting nozzles 21 can simultaneously meet the sand filling operations of three groups of aluminum shell resistors.

[0047] A main feed roller 20 is movably installed inside the sand filling box 13. A driving member 14 is provided in the middle of the sand filling box 13 for use with the sand filling member 18. The setting of the driving member 14 can simultaneously meet the sand discharge operations of three groups of lifting nozzles 21, and the setting of the main feed roller 20 can prevent the quartz sand 4 from being blocked inside the sand filling box 13.

[0048] Three groups of secondary feed rollers 25 are movably installed on the inner side of the driving member 14. The secondary feed rollers 25 and one end of the main feed roller 20 are independently driven by an electric motor 26. The motor 26 can independently control the rotation of the secondary feed rollers 25 and the main feed roller 20, thereby individually controlling the three groups of lifting nozzles 21.

[0049] It should be understood that if structures such as the baffle 35 are not provided, due to the small gap between the resistor core 6 and the aluminum shell 1, the sand material will fall from the lifting nozzle 21 during sand filling, and most of the sand material will be blocked by the resistor core 6, thereby being retained on the upper part of the resistor core 6. As a result, it is necessary to pause the input of sand material every time a portion of sand material is poured in, and continue to transport the sand material after the sand material on the upper part of the resistor core 6 completely falls into the gap between the aluminum shell 1 and the resistor core 6, resulting in low sand filling efficiency.

[0050] Therefore, in order to improve the efficiency of the sand tank, two groups of baffles 35 used in conjunction with the resistor core 6 are movably installed inside the lifting nozzle 21. The two groups of baffles 35 are elastically connected by a tension spring 36. The lower end of the baffle 35 is a slope structure. One end of the baffle 35 is movably connected to the lifting nozzle 21 through a rotating rod 37, and the other end of the baffle 35 is movably connected to the lifting nozzle 21 through an arc-shaped chute 38. The setting of the arc-shaped chute 38 can limit the rotation direction of the baffle 35, so that the baffle 35 is under the action of its own gravity and the tension spring 36. Keeping it in a vertical downward state, two mutually rotating baffles 35 are added in the lifting nozzle 21. The two groups of baffles 35 are connected by a tension spring 36. The lower end of the baffle 35 has a guiding slope. When the lifting nozzle 21 descends into the aluminum shell 1, the guiding slope of the baffle 35 acts on the resistor core 6, thereby forcing the two baffles 35 to open automatically, making it easier for the sand material to be quickly discharged from the gap on both sides, thereby improving the efficiency of filling the sand. When it is almost finished, the lifting nozzle 21 rises, and the two baffles 35 gradually close under the action of the tension spring 36, thereby filling the sand on the upper end of the resistor core 6.

[0051] A feeding pipe 17 is provided between the material storage box 12 and the sand filling box 13. A feeding auger 33 is movably installed inside the feeding pipe 17. A discharge nozzle 19 is provided at the upper end of the feeding pipe 17. The user pours the quartz sand 4 into the interior of the material storage box 12, and drives the feeding auger 33 to operate by the motor, so that the feeding auger 33 drives the quartz sand 4 to move upward, and is discharged into the interior of the sand filling box 13 through the discharge nozzle 19, and the sand filling operation is performed from top to bottom through the sand filling box 13.

[0052] When in use, this type of resistor product usually consists of a resistor core 6 and lead wires. The resistor core 6 is directly placed inside the aluminum shell and filled with heat-resistant fillers, which makes it difficult for the internal resistor core 6 to be centered, reducing the insulation performance of the product. In addition, the product is led out by high-temperature leads, which are easily damaged during production and transportation, and are also prone to product performance degradation and scrapping, reducing the shock resistance and stability of the resistor; secondly, during the processing of the aluminum shell resistor, the space between the aluminum shell and the resistor core 6 is filled by sand filling, and the traditional device cannot complete the sand filling operation of multiple groups of aluminum shell resistors at the same time, and after the sand filling operation, the internal compactness of the quartz sand 4 is poor. Under the action of external force, the internal quartz sand 4 of the aluminum shell resistor is prone to shaking, making it impossible for the quartz sand 4 to tightly wrap the resistor core 6, reducing its heat dissipation effect and affecting the stability of the aluminum shell resistor when in use;

[0053] To this end, by providing the screw 2 and quartz sand 4, when the aluminum shell resistor is used, the traditional wire connection structure is replaced, so that the resistor core 6 is in a stable and centered state, thereby improving its insulation performance and avoiding the breakage of the lead wire during the production and transportation process;

[0054] During operation, the original aluminum shell resistors mostly use high temperature wires as the lead-out structure, which is easy to break and cause the electrical performance to decline. The aluminum shell resistor uses a screw 2 as the lead-out structure, and the two ends are changed to slurry packaging. The sealing material 3 is slurry, which increases the reliability of the product. Compared with the traditional high temperature wire, the screw 2 will not break or be damaged. Secondly, the resistor core 6 is fixed in the middle position of the aluminum shell 1 by the cylindrical mica block 8 and the screw 2 and the mica internal positioning method. At the same time, quartz sand 4 is filled to support and fix the resistor core 6 and the aluminum shell 1, so that the resistor core 6 is fixed in the aluminum shell. The internal position of the body 1 is fixed, which prevents the problem of reduced withstand voltage due to the movement of the resistor core 6 during the production process, thereby improving the withstand voltage performance. The filling of quartz sand 4 can fill the gap between the resistor core 6 and the aluminum shell 1. The main function of filling the interior of the aluminum shell resistor with sand is to improve heat dissipation performance and enhance mechanical stability. Sand filling can prevent the resistor core 6 from loosening during transportation or vibration, such as the metal wire or ceramic matrix of the wire-wound resistor, to avoid poor contact or short circuit caused by displacement. The friction between the sand particles can absorb external vibration energy, reducing the damage of mechanical stress to the internal structure of the resistor.

[0055] By providing the limit clamp 15 and the sand filling member 18, when the aluminum shell resistor is subjected to the sand filling operation, the sand filling operation of multiple groups of aluminum shell resistors can be satisfied at the same time, thereby improving the working efficiency, making the sand filling more compact, and improving the sand filling effect;

[0056] When the interior of the aluminum shell resistor is filled with sand, the top cover 34 at the upper end of the aluminum shell 1 is opened so that the upper end of the aluminum shell 1 is open and the sand filling operation is carried out above the aluminum shell 1;

[0057] When in use, the aluminum shells 1 of the three groups of aluminum shell resistors are respectively inserted into the three notches of the limit card seat 15, and the extended screw 2 is stuck in the concave groove 32. The three groups of lifting nozzles 21 can be used to simultaneously fill sand into the interior of the three groups of aluminum shells 1, and the aluminum shells 1 can be taken out from the limit card seat 15 through the screw 2. In order to avoid dust during the sand filling operation, a sand filling part 18 of a lifting structure is provided. During the sand filling operation, the lifting rod 23 can be used to drive the telescopic tube 22 downward to adjust the use height of the three groups of lifting nozzles 21. The setting of the three groups of lifting nozzles 21 can simultaneously meet the sand filling operation of the three groups of aluminum shell resistors. The setting of the driving part 14 can simultaneously meet the sand discharge operation of the three groups of lifting nozzles 21, and the setting of the main feeding roller 20, The quartz sand 4 can be prevented from being blocked inside the sand filling box 13. The motor 26 can be used to independently control the rotation of the secondary feed roller 25 and the main feed roller 20, so as to individually control the three sets of lifting nozzles 21. By starting the vibrator 29, the vibrator 29 drives the limit card seat 15 to vibrate, thereby causing the aluminum shell 1 in the limit card seat 15 to vibrate. The quartz sand 4 in the aluminum shell 1 continuously collides under the action of vibration and seeks a more stable equilibrium position. Since the surface of the quartz sand 4 is rough and the shape is irregular, they will get stuck to each other, such as the concave and convex parts complement each other, thereby reducing the gaps between the particles, increasing the overall density, and improving the sand filling effect in the aluminum shell 1. It can avoid the quartz sand 4 in the aluminum shell 1 from shaking under the action of external force, making the quartz sand filling more compact.

[0058] By providing the collecting tray 16 and the return pipe 27, the use of the limit holder 15 and the sand filling member 18 is optimized during the sand filling operation of the aluminum shell resistor, so that it has a sand recovery structure and reduces the subsequent cleaning steps;

[0059] During operation, when the sand filling part 18 is filling the interior of the aluminum shell 1 with sand, part of the quartz sand 4 will overflow outward, and the overflowing quartz sand 4 can be collected by the collecting tray 16. The inclined structure inside the collecting tray 16 allows the quartz sand 4 to slide down to the discharge port and enter the interior of the return pipe 27. It is then discharged into the storage box 12 through the inclined return pipe 27. The feeding auger 33 is driven by the motor to operate, so that the feeding auger 33 drives the quartz sand 4 to move upward, thereby passing through the discharge port. 19 is discharged into the interior of the sand filling box 13, and the sand filling operation is performed from top to bottom through the sand filling box 13. Secondly, in order to prevent the quartz sand 4 in the collecting tray 16 from being discharged from the central gap, a docking portion 30 and a sealing card cover 31 are provided, so that the docking portion 30 and the sealing card cover 31 are movably docked up and down, and a staggered sealing structure is formed between the limit card seat 15 and the collecting tray 16, which can ensure that the limit card seat 15 is used in vibration and avoid the limit card seat 15 from transmitting the vibration to the collecting tray 16.

[0060] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A processing device for aluminum shell resistors, characterized in that: It comprises a fixed base (11) and a sand filling box (13), wherein the sand filling box (13) is fixedly mounted above the fixed base (11), a material storage box (12) is fixedly mounted on an outer surface of one side of the fixed base (11), a limit clamping seat (15) for loading an aluminum shell (1) is mounted at the middle position of the upper end of the fixed base (11), and both ends of the limit clamping seat (15) are provided with a concave groove (32) for use with a screw (2), and a sand filling member (18) is movably mounted at the middle of the lower end of the sand filling box (13); The sand filling member (18) comprises three groups of lifting nozzles (21) and telescopic tubes (22), three groups of discharge slots (24) are provided on the inner side of the telescopic tubes (22), the three groups of lifting nozzles (21) are all installed at the lower end of the telescopic tubes (22), and the lifting nozzles (21) and the sand filling box (13) are driven by a lifting rod (23); Two groups of baffles (35) used in conjunction with the resistor core (6) are movably installed inside the lifting nozzle (21). The two groups of baffles (35) are elastically connected by a tension spring (36). The lower end of the baffle (35) is a slope structure. One end of the baffle (35) and the lifting nozzle (21) are movably connected by a rotating rod (37), and the other end of the baffle (35) and the lifting nozzle (21) are movably connected by an arc-shaped sliding groove (38).

2. The processing device for aluminum shell resistor according to claim 1, characterized in that: A collecting plate (16) for use with the limiting clamp (15) is provided at the middle of the upper end of the fixed base (11). The collecting plate (16) is of an overall concave structure, and a discharge port is provided on the inner side of the collecting plate (16). The collecting plate (16) and the limiting clamp (15) are elastically connected via a spring (28).

3. The processing device for aluminum shell resistor according to claim 2, characterized in that: A vibrator (29) is fixedly mounted on the middle portion of the outer surface of the lower end of the position limiting holder (15), and a return pipe (27) is fixedly mounted on the bottom of the collecting tray (16). The feed end of the return pipe (27) is connected to the discharge port of the collecting tray (16), and the discharge end of the return pipe (27) is placed on the inner side of the storage box (12).

4. The processing device for aluminum shell resistor according to claim 3, characterized in that: The bottom of the position limiting seat (15) is provided with a sealing cover (31) for use with the collecting tray (16), and the upper end of the collecting tray (16) is provided with a docking portion (30) for use with the sealing cover (31), and the docking portion (30) is in a square shape as a whole.

5. The processing device for aluminum shell resistor according to claim 1, characterized in that: A main feeding roller (20) is movably installed inside the sand filling box (13), and a driving member (14) used in conjunction with the sand filling member (18) is provided in the middle of the sand filling box (13).

6. The processing device for aluminum shell resistor according to claim 5, characterized in that: Three groups of secondary feed rollers (25) are movably mounted on the inner side of the driving member (14), and one end of the secondary feed rollers (25) and the main feed roller (20) are independently driven by a motor (26).

7. The processing device for aluminum shell resistor according to claim 1, characterized in that: A feeding pipe (17) is provided between the material storage box (12) and the sand filling box (13), a feeding auger (33) is movably installed inside the feeding pipe (17), and a discharge nozzle (19) is provided at the upper end of the feeding pipe (17).

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