Trimming and trimming mechanism for machining aluminum capacitor shell

Abstract

The invention discloses an edge trimming mechanism for machining an aluminum capacitor shell, and relates to the technical field of aluminum capacitor shell machining. The edge trimming mechanism comprises a base, a stand column is arranged on the base, a top plate is fixed to the top end of the stand column, and an edge trimming assembly is arranged below the top plate. In the trimming assembly, a movable plate is arranged on the inner side of a lifting frame, and a structure capable of adjusting the distance between two grinding columns is arranged on the bottom face of the movable plate so as to adapt to shells of different thicknesses. An electric sliding rail and an electric sliding block on the inner side of the lifting frame drive a moving plate to horizontally move to adapt to shells with different diameters; the motor drives the screw rod to drive the lifting frame to vertically move, so that the grinding column can be clamped into the shell sections with different heights. The second motor is driven through a gear and a chain to form an acceleration gear structure to accelerate rotation of the polishing column. A rotating mechanism is further arranged on the base, the electric rotating table drives the clamped and fixed capacitor to rotate and is matched with the trimming assembly, efficient trimming and polishing of the inner side and the outer side of the tangent plane of the capacitor are achieved, and production benefits are improved.

Description

Technical Field

[0001] This invention relates to the field of aluminum capacitor casing processing technology, specifically to an edge trimming mechanism for processing aluminum capacitor casings. Background Technology

[0002] A capacitor, also known as a capacitance device, is a device that stores electrical charge and is widely used in electronic and electrical equipment. It functions as a DC blocker, AC converter, coupler, bypass, and energy converter in circuits. A capacitor consists of a casing, end caps on the casing, and a dielectric material housed within the casing. During the capacitor manufacturing process, burrs are left at the ends of the capacitor casing, and many of these burrs are located on the inside of the casing. Traditional grinding and polishing equipment struggles to remove these burrs from the inside of the capacitor casing. CN213672979U discloses a trimming mechanism for processing aluminum capacitor casings, including a base, a fixed seat and a material carrier plate on the upper side of the base, and a support frame on one side of the base. The fixed seat has several ejector heads, and support rods are provided on both sides of the fixed seat. A connecting plate is provided at the upper end of each support rod, and a spring is provided on the lower side of the connecting plate. The spring is sleeved on the support rod. The material carrier plate has several fixing grooves, the position and number of which correspond one-to-one with the ejector heads. Connecting ears are provided at both ends of the material carrier plate, and the connecting ears are fixedly connected to the connecting plate by screws. A horizontal plate is provided on the upper side of the support frame, and a pushing cylinder is provided on the horizontal plate. Compared with traditional aluminum capacitor casing trimming devices, this device can quickly and conveniently process the burrs on the inner side of the capacitor casing, effectively improving the processing quality of the product. However, this patent still has the following problems in actual use: First, the spacing and position of the grinding components in this mechanism are usually fixed, making it difficult to adapt to capacitor shells of different thicknesses, diameters and heights. This results in low equipment versatility, requiring frequent tooling changes or parameter adjustments to adapt to various product specifications, which limits production efficiency. Furthermore, it cannot simultaneously grind the inner and outer sides of the cut surface. After trimming the inner side, the device still needs to focus on trimming the outer edge of the cut surface, which is inefficient.

[0003] An edge trimming mechanism for processing aluminum capacitor casings is proposed to address the problems mentioned above. Summary of the Invention

[0004] The purpose of this invention is to provide an edge trimming mechanism for processing aluminum capacitor casings, in order to solve the problems mentioned in the background art. First, the spacing and position of the grinding components of the mechanism are usually fixed, which makes it difficult to adapt to capacitor casings of different thicknesses, diameters and heights. This results in low equipment versatility, requiring frequent tooling changes or parameter adjustments to adapt to various product specifications, thus limiting production efficiency. Moreover, it cannot simultaneously grind the inner and outer sides of the cut surface. After trimming the inner side, the above-mentioned device still needs to focus on trimming the outer edge of the cut surface, resulting in low efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a trimming mechanism for processing aluminum capacitor shells, comprising a base, a column fixedly connected to the top surface of the base, and a top plate fixedly connected to the top of the column; A trimming assembly is provided below the top plate. The trimming assembly includes a lifting frame located below the top plate, a movable plate provided inside the lifting frame, a connecting shell fixedly connected to the top surface of the movable plate, and a second motor fixedly connected to the top surface of the connecting shell. The bottom surface of the movable plate is provided with a first electric push rod and a rotating ring. A suspension plate is fixedly connected to the bottom surface of the rotating ring. An installation shaft is symmetrically rotatably connected to the bottom surface of the suspension plate. A drive shaft passes through the middle of the rotating ring. A second gear is fixedly connected to the top end of the drive shaft. A drive sprocket is fixedly connected to the bottom end of the drive shaft. The mounting shaft has a driven sprocket fixedly sleeved at its top, a grinding column fixedly connected to its bottom end, and a crank rod fixedly connected to the output end of the first electric actuator.

[0006] Preferably, the inner side of the lifting frame is symmetrically provided with side grooves, and an electric slide rail is fixedly installed inside the side groove. Two electric sliders are slidably connected on the electric slide rail, and the electric sliders are fixedly connected to the outer side of the moving plate.

[0007] Preferably, the trimming assembly further includes a screw rod rotatably mounted on one side of the top surface of the base, the screw rod having a threaded connection to a threaded sleeve, the column having a sliding connection to a sliding sleeve, the top surface of the top plate having a first motor fixedly connected, the output end of the first motor being fixedly connected to the screw rod, one of the sliding sleeves being fixedly connected to the threaded sleeve, and the other sliding sleeve and threaded sleeve being fixedly connected to the outer side of the lifting frame.

[0008] Preferably, the output end of the second motor extends into the connecting shell and is fixedly connected to a first gear, the first gear meshes with the second gear, the drive shaft is rotatably connected to the moving plate, the rotating ring is rotatably connected to the bottom surface of the moving plate, and the end of the crank rod away from the first electric push rod is rotatably connected to the outer side of the rotating ring.

[0009] Preferably, the drive sprocket and the driven sprocket are fitted with chains, and the driven sprocket is symmetrically arranged with the drive sprocket as the center.

[0010] Preferably, a rotating mechanism is provided below the lifting frame, and the rotating mechanism includes an electric rotating platform installed in the middle of the top surface of the base.

[0011] Preferably, a second electric push rod is symmetrically and fixedly connected to the top surface of the electric rotary table, and a clamping ring is fixedly connected to the output end of the second electric push rod.

[0012] Preferably, the grinding column adopts a double-layer composite structure: the outer layer is a diamond grinding wheel, the inner layer is an aluminum alloy substrate, and the grinding wheel and the substrate are fixed with epoxy resin adhesive; the working end of the grinding column has a tapered transition with a transition section length of 10-15mm, which is adapted to the inner and outer rounded corners of the capacitor shell cross-section.

[0013] Preferably, the ratio of the number of teeth of the first gear to the second gear is 2:1, and the ratio of the pitch circle diameter of the driving sprocket to the driven sprocket is 3:1, forming a two-stage acceleration transmission, and the rotational speed of the grinding column reaches 3000-4500 r / min; the chain adopts a single-row roller chain, and the tension is controlled by the tension wheel inside the connecting shell.

[0014] Preferably, the inner side of the clamping ring is provided with a three-layer buffer structure: the outer layer is a wear-resistant steel ring, the middle layer is a silicone buffer pad, and the inner layer is a plush anti-slip layer; the clamping surface of the clamping ring is arc-shaped, and the clamping pressure is adjusted by the second electric push rod.

[0015] Compared with the prior art, the beneficial effects of this invention are: This edge trimming mechanism for processing aluminum capacitor shells features a multi-structure design that allows for flexible adjustment of the grinding column spacing, horizontal position, and vertical height to accommodate cylindrical capacitor shells of different thicknesses, diameters, and heights. Furthermore, the acceleration gear structure speeds up the rotation of the grinding columns, improving grinding efficiency and device versatility, ensuring trimming quality, and enhancing production efficiency. The specific details are as follows: 1. First, through the coordinated operation of the first electric push rod, crank rod, rotating ring, and suspension plate, the parallel distance between the two grinding columns can be flexibly adjusted to accommodate cylindrical capacitor shells of different thicknesses. This eliminates the need for companies to equip themselves with specialized equipment for shells of different thicknesses, increasing the device's versatility and reducing procurement costs and space requirements. Furthermore, the electric slide rail and electric slider inside the lifting frame drive the moving plate horizontally, changing the horizontal position of the grinding columns and ensuring accurate contact with the inner and outer surfaces of capacitors of different diameters. This meets the trimming needs of capacitors of various diameters and guarantees trimming quality. Simultaneously, the first motor drives the screw to rotate, causing the lifting frame to move vertically, allowing the grinding columns to engage with the inner and outer surfaces of cylindrical capacitors of any height, further enhancing the device's adaptability to capacitors of different heights. Finally, the second motor drives the first gear to rotate, forming an accelerating gear structure through gear meshing and sprocket chain transmission. This accelerates the rotation of the grinding columns, effectively improving grinding efficiency, shortening the production cycle, and enhancing overall production benefits. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2 This is an enlarged structural diagram of the lifting frame and the moving plate; Figure 3 This is a schematic diagram of the moving plate and its cross-sectional structure. Figure 4 This is a schematic diagram of the installation structure of the rotating ring and the suspension plate.

[0017] In the diagram: 1. Base; 101. Column; 102. Top plate; 2. Trimming assembly; 201. Screw; 202. Screw sleeve; 203. Sliding sleeve; 204. First motor; 205. Lifting frame; 2051. Side groove; 2052. Electric slide rail; 2053. Electric slider; 206. Moving plate; 207. Connecting shell; 208. Second motor; 209. First gear; 210. Drive shaft; 211. Second gear; 212. Drive sprocket; 213. First electric push rod; 214. Crank rod; 215. Rotating ring; 216. Suspension plate; 217. Mounting shaft; 218. Grinding column; 219. Driven sprocket; 220. Chain; 3. Rotating mechanism; 301. Electric rotary table; 302. Second electric push rod; 303. Clamping ring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-4 The present invention provides a technical solution: a trimming mechanism for processing aluminum capacitor shells, including a base 1, a column 101 fixedly connected to the top surface of the base 1, and a top plate 102 fixedly connected to the top of the column 101. A trimming assembly 2 is provided below the top plate 102. The trimming assembly 2 includes a lifting frame 205 located below the top plate 102. A movable plate 206 is provided on the inner side of the lifting frame 205. A connecting shell 207 is fixedly connected to the top surface of the movable plate 206. A second motor 208 is fixedly connected to the top surface of the connecting shell 207. When the second motor 208 is started, the first gear 209 drives the second gear 211 to rotate.

[0020] The bottom surface of the movable plate 206 is provided with a first electric push rod 213 and a rotating ring 215. The bottom surface of the rotating ring 215 is fixedly connected to a suspension plate 216. The bottom surface of the suspension plate 216 is symmetrically rotatably connected to a mounting shaft 217. A drive shaft 210 passes through the middle of the rotating ring 215. A second gear 211 is fixedly connected to the top end of the drive shaft 210. A drive sprocket 212 is fixedly connected to the bottom end of the drive shaft 210. The mounting shaft 217 has a driven sprocket 219 fixedly sleeved on its top, and a grinding column 218 fixedly connected to its bottom end. The output end of the first electric push rod 213 is fixedly connected to a crank rod 214. By activating the first electric push rod 213, the crank rod 214 pulls the rotating ring 215 to rotate, thereby changing the angle of the suspension plate 216 and thus changing the parallel distance between the two grinding columns 218. Ultimately, the distance between the two grinding columns 218 can be adjusted according to the thickness of the cylindrical capacitor shell for adaptation, increasing its practicality. The rotating ring 215 is rotatably connected to the moving plate 206 via a bearing.

[0021] The inner side of the lifting frame 205 is symmetrically provided with side grooves 2051. An electric slide rail 2052 is fixedly installed inside the side groove 2051. Two electric sliders 2053 are slidably connected on the electric slide rail 2052. The electric sliders 2053 are fixedly connected to the outer side of the moving plate 206. By moving the two electric sliders 2053 synchronously on the electric slide rail 2052, the horizontal position of the moving plate 206 is changed, and the horizontal position of the grinding column 218 can be adjusted, so that this device can adapt to cylindrical capacitors of various diameters.

[0022] The trimming assembly 2 also includes a screw 201 rotatably mounted on one side of the top surface of the base 1. The screw 201 is externally threaded with a threaded sleeve 202. The column 101 is externally slidably connected with a sliding sleeve 203. The top surface of the top plate 102 is fixedly connected with a first motor 204. The output end of the first motor 204 is fixedly connected to the screw 201. One sliding sleeve 203 is fixedly connected to the threaded sleeve 202. The other sliding sleeve 203 and the threaded sleeve 202 are both fixedly connected to the outer side of the lifting frame 205. By starting the first motor 204, the screw 201 drives the lifting frame 205 to move vertically, so that the grinding column 218 can be inserted into the inner and outer sides of the cross-section of a cylindrical capacitor of any height.

[0023] The output end of the second motor 208 extends into the connecting housing 207 and is fixedly connected to the first gear 209. The first gear 209 meshes with the second gear 211. The drive shaft 210 is rotatably connected to the moving plate 206. The rotating ring 215 is rotatably connected to the bottom surface of the moving plate 206. The end of the crank 214 away from the first electric push rod 213 is rotatably connected to the outer side of the rotating ring 215. A chain 220 is sleeved on the outside of the drive sprocket 212 and the driven sprocket 219. The driven sprocket 219 is driven by the drive sprocket 212. The arrangement is centrally symmetrical; the rotation of the second gear 211 will drive the drive shaft 210 to rotate, which in turn causes the drive sprocket 212 to drive the two driven sprockets 219 to rotate via the chain 220. This, in turn, causes the mounting shaft 217 to drive the grinding column 218 to rotate, simultaneously grinding the inner and outer sides of the cylindrical capacitor's cross-section. Furthermore, since the diameter of the first gear 209 is larger than that of the second gear 211, and the diameter of the drive sprocket 212 is larger than that of the driven sprockets 219, the two form an acceleration gear structure, which accelerates the rotation of the grinding column 218.

[0024] A rotating mechanism 3 is provided below the lifting frame 205. The rotating mechanism 3 includes an electric rotating platform 301 installed in the middle of the top surface of the base 1. A second electric push rod 302 is symmetrically and fixedly connected to the top surface of the electric rotating platform 301. A clamping ring 303 is fixedly connected to the output end of the second electric push rod 302. The electric rotating platform 301 can rotate automatically and slowly. The second electric push rod 302 pushes the clamping ring 303 to move the cylindrical capacitor to the center position of the electric rotating platform 301 and clamp it. When the electric rotating platform 301 rotates, the cylindrical capacitor rotates slowly coaxially, so that the inner and outer sides of the cross-section of the cylindrical capacitor are trimmed and polished.

[0025] In this invention, the grinding post 218 adopts a double-layer composite structure: the outer layer is a diamond grinding wheel (grit size 80-120 mesh, hardness HV1000-1200), and the inner layer is an aluminum alloy substrate (thickness 5-8mm). The grinding wheel and the substrate are fixed with epoxy resin adhesive (bonding strength ≥20MPa). The working end of the grinding post 218 has a tapered transition (taper angle 30°-45°), and the transition section length is 10-15mm, which is adapted to the inner and outer rounded corners (radius 1-3mm) of the capacitor shell surface.

[0026] In this invention, the tooth ratio of the first gear 209 to the second gear 211 is 2:1, and the pitch circle diameter ratio of the driving sprocket 212 to the driven sprocket 219 is 3:1, forming a two-stage acceleration transmission (total transmission ratio 6:1), ensuring that the rotational speed of the grinding column 218 reaches 3000-4500 r / min; the chain 220 adopts a single-row roller chain (pitch 9.525 mm), and the tension is controlled by the tensioning wheel (adjustment range 3-5 mm) inside the connecting shell 207, with a transmission runout ≤0.1 mm.

[0027] In this invention, the inner side of the clamping ring 303 is provided with a three-layer buffer structure: the outer layer is a wear-resistant steel ring (thickness 2-3mm), the middle layer is a silicone buffer pad (Shore hardness 60A, thickness 3-5mm), and the inner layer is a plush anti-slip layer (thickness 1-2mm); the clamping surface of the clamping ring 303 is arc-shaped (the radius of curvature is adapted to the capacitor shell), and the clamping pressure is adjusted by the second electric push rod 302 (range 50-200N) to ensure that the shell is not deformed and the rotation synchronization error is ≤0.5°.

[0028] Working principle: Before using this edge trimming mechanism for processing aluminum capacitor casings, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 4 As shown, firstly, the cylindrical capacitor is placed on the electric rotary table 301. The second electric push rod 302 is activated, its output end pushing the clamping ring 303 to move the cylindrical capacitor to the center position of the electric rotary table 301 and clamp it in place. Next, according to the thickness of the cylindrical capacitor's casing, the first electric push rod 213 is activated, its output end driving the crank rod 214 to pull the rotating ring 215 to rotate. The rotating ring 215 causes the suspension plate 216 to change its angle, thereby changing the parallel distance between the two grinding pillars 218 to adapt to the casing thickness of the cylindrical capacitor. Then, according to the diameter of the cylindrical capacitor, two electric sliders 2053 move synchronously on the electric slide rail 2052, causing the moving plate 206 to change its horizontal position, allowing the horizontal position of the grinding pillars 218 to be adjusted to accommodate cylindrical capacitors of different diameters. Next, based on the height of the cylindrical capacitor, the first motor 204 is started, its output end driving the screw 201 to rotate. The screw 201 drives the screw sleeve 202 to move vertically, and the screw sleeve 202 drives the lifting frame 205 to move vertically, so that the grinding column 218 can be inserted into the inner and outer sides of the cross-section of the cylindrical capacitor. Finally, the second motor 208 is started, its output end driving the first gear 209 to rotate. The first gear 209 drives the second gear 211 to rotate, and the second gear 211 drives the drive shaft 210 to rotate. The drive shaft 210 drives the drive sprocket 212 to rotate, and the drive sprocket 212 drives two driven sprockets 219 to rotate via the chain 220. The driven sprockets 219 drive the mounting shaft 217 to rotate, and the mounting shaft 217 drives the grinding column 218 to rotate. At the same time, the electric rotary table 301 automatically and slowly rotates, driving the cylindrical capacitor to rotate slowly coaxially, realizing the finishing and grinding of the inner and outer sides of the cross-section of the cylindrical capacitor.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A trimming mechanism for processing aluminum capacitor shells, comprising a base (1), wherein a column (101) is fixedly connected to the top surface of the base (1), and a top plate (102) is fixedly connected to the top of the column (101). Its features are, Also includes: A trimming assembly (2) is provided below the top plate (102). The trimming assembly (2) includes a lifting frame (205) located below the top plate (102). A moving plate (206) is provided on the inner side of the lifting frame (205). A connecting shell (207) is fixedly connected to the top surface of the moving plate (206). A second motor (208) is fixedly connected to the top surface of the connecting shell (207). The bottom surface of the movable plate (206) is provided with a first electric push rod (213) and a rotating ring (215). The bottom surface of the rotating ring (215) is fixedly connected to a suspension plate (216). The bottom surface of the suspension plate (216) is symmetrically rotatably connected to an installation shaft (217). A drive shaft (210) passes through the middle of the rotating ring (215). A second gear (211) is fixedly connected to the top end of the drive shaft (210). A drive sprocket (212) is fixedly connected to the bottom end of the drive shaft (210). The top of the mounting shaft (217) is fixedly fitted with a driven sprocket (219), the bottom end of the mounting shaft (217) is fixedly connected with a grinding column (218), and the output end of the first electric actuator (213) is fixedly connected with a crank (214).

2. The edge trimming mechanism for processing aluminum capacitor casings according to claim 1, characterized in that: The inner side of the lifting frame (205) is symmetrically provided with side grooves (2051), and an electric slide rail (2052) is fixedly installed inside the side groove (2051). Two electric sliders (2053) are slidably connected on the electric slide rail (2052), and the electric sliders (2053) are fixedly connected to the outer side of the moving plate (206).

3. The edge trimming mechanism for processing aluminum capacitor casings according to claim 1, characterized in that: The trimming assembly (2) also includes a screw (201) rotatably mounted on one side of the top surface of the base (1). The screw (201) is externally threaded with a threaded sleeve (202). The column (101) is externally slidably connected with a sliding sleeve (203). The top surface of the top plate (102) is fixedly connected with a first motor (204). The output end of the first motor (204) is fixedly connected to the screw (201). One of the sliding sleeves (203) is fixedly connected to the threaded sleeve (202). The other sliding sleeve (203) and the threaded sleeve (202) are both fixedly connected to the outside of the lifting frame (205).

4. The edge trimming mechanism for processing aluminum capacitor casings according to claim 1, characterized in that: The output end of the second motor (208) extends into the connecting shell (207) and is fixedly connected to the first gear (209). The first gear (209) meshes with the second gear (211). The drive shaft (210) is rotatably connected to the moving plate (206). The rotating ring (215) is rotatably connected to the bottom surface of the moving plate (206). The end of the crank (214) away from the first electric push rod (213) is rotatably connected to the outer side of the rotating ring (215).

5. The edge trimming mechanism for processing aluminum capacitor casings according to claim 1, characterized in that: A chain (220) is sleeved on the outside of the drive sprocket (212) and the driven sprocket (219), and the driven sprocket (219) is symmetrically arranged with the drive sprocket (212) as the center.

6. The edge trimming mechanism for processing aluminum capacitor casings according to claim 1, characterized in that: A rotating mechanism (3) is provided below the lifting frame (205), and the rotating mechanism (3) includes an electric rotating platform (301) installed in the middle of the top surface of the base (1).

7. The edge trimming mechanism for processing aluminum capacitor housings according to claim 6, characterized in that: The top surface of the electric rotary table (301) is symmetrically and fixedly connected to a second electric push rod (302), and the output end of the second electric push rod (302) is fixedly connected to a clamping ring (303).

8. The edge trimming mechanism for processing aluminum capacitor casings according to claim 1, characterized in that, The grinding column (218) adopts a double-layer composite structure: the outer layer is a diamond grinding wheel, and the inner layer is an aluminum alloy substrate. The grinding wheel and the substrate are fixed with epoxy resin. The working end of the grinding column (218) has a tapered transition with a transition section length of 10-15mm, which is adapted to the inner and outer rounded corners of the capacitor shell.

9. A trimming mechanism for processing aluminum capacitor casings according to claim 4, characterized in that, The gear ratio of the first gear (209) to the second gear (211) is 2:1, and the pitch circle diameter ratio of the driving sprocket (212) to the driven sprocket (219) is 3:1, forming a two-stage acceleration transmission. The rotational speed of the grinding column (218) reaches 3000-4500 r / min. The chain (220) adopts a single-row roller chain, and the tension is controlled by the tensioning wheel inside the connecting shell (207).

10. The edge trimming mechanism for processing aluminum capacitor casings according to claim 7, characterized in that, The inner side of the clamping ring (303) is provided with a three-layer buffer structure: the outer layer is a wear-resistant steel ring, the middle layer is a silicone buffer pad, and the inner layer is a plush anti-slip layer; the clamping surface of the clamping ring (303) is arc-shaped, and the pressure during clamping is adjusted by the second electric push rod (302).

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