Glue adding device for shell of aluminum electrolytic capacitor

Abstract

The utility model discloses a shell glue adding device of an aluminum electrolytic capacitor, which comprises a micro-vibration type glue adding disc arranged at the upper end of a working table, a rear end limiting plate and a side edge limiting plate, the micro-vibration type glue adding disc comprises a disc body, a groove is formed in the upper end of the disc body, a glue adding plate is horizontally arranged in the groove, and the side edge limiting plate is arranged on the lower end of the disc body. An elastic connecting pad is arranged between the lower end face of the glue adding plate and the bottom of the groove, a piezoelectric ceramic vibration piece is further arranged on the lower end face of the glue adding plate, two electric connecting plugs are arranged at the rear end of the disc body, and the two electric connecting plugs are electrically connected with the two sides of the piezoelectric ceramic vibration piece through wires respectively. The front end face of the rear end limiting plate is provided with two electric connection jacks matched with the electric connection plugs. According to the utility model, the glue solution at the port of the aluminum electrolytic capacitor shell can be driven to flow, the glue solution can be better and uniformly distributed on the port of the aluminum electrolytic capacitor shell, the sealing is uniform, and the problem of poorer sealing caused by free flowing of the glue solution is solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of capacitor production equipment, and in particular relates to a device for gluing the shell of an aluminum electrolytic capacitor. Background Technology

[0002] The production process of aluminum electrolytic capacitors involves multiple steps, including key stages such as foil cutting, stapling, winding, impregnation, assembly, sealing and waisting, sheathing, aging, charging and sorting, finished product, and lead wire forming. In the assembly, sealing and waisting stage, the core is packaged into an aluminum shell, electrolyte is injected, and the aluminum shell port is sealed with a rubber stopper (to prevent leakage). Then, the aluminum shell port is sealed by sealing and waisting equipment, and the rubber stopper is tightened by waisting. Finally, glue is applied to the upper part of the rubber stopper at the aluminum shell port by glue application equipment to achieve sealing of the inside of the aluminum shell.

[0003] Existing glue-applying equipment, such as the glue-applying device for capacitors disclosed in publication number CN221262166U, operates on a similar principle. A placement plate has multiple placement slots arranged in a rectangular array for placing aluminum electrolytic capacitors to be glued. The glue-applying head moves along the X, Y, and Z axes via a three-dimensional displacement mechanism, sequentially applying glue to each aluminum electrolytic capacitor. However, in practice, it has been found that the glue in the glue-applying head is directly dripped onto the rubber plug at the aluminum shell port, and then the free flow of the glue achieves a full seal at the aluminum shell port. This free-flowing method results in some capacitor shell ports not being fully covered with glue, rendering the capacitors unusable and hindering the production of aluminum electrolytic capacitors. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a device for gluing the shell of an aluminum electrolytic capacitor, so as to solve the technical problems in the background art.

[0005] This utility model provides the following technical solution:

[0006] A device for applying adhesive to the casing of an aluminum electrolytic capacitor includes a workbench and a micro-vibration adhesive application tray placed on the upper part of the workbench. The upper surface of the workbench is also provided with a rear limiting plate and a side limiting plate for positioning the micro-vibration adhesive application tray. The micro-vibration adhesive application tray includes a tray body with a groove at its upper end. An adhesive application plate is horizontally arranged within the groove. An elastic connecting pad is provided between the lower end face of the adhesive application plate and the bottom of the groove. A piezoelectric ceramic vibrating element connected to the lower end face of the adhesive application plate is also provided at the upper end of the elastic connecting pad. Two electrical connectors are provided at the rear end of the tray body, and the two electrical connectors are electrically connected to both sides of the piezoelectric ceramic vibrating element via wires. Two electrical connection sockets adapted to the electrical connectors are provided on the front end face of the rear limiting plate. Fasteners for securing the micro-vibration adhesive application tray are also provided at the upper end of the side limiting plate.

[0007] Preferably, the upper end face of the rubber-coated plate is provided with a cylindrical placement groove for placing aluminum electrolytic capacitors along the vertical direction. An annular rubber layer is coaxially arranged on the inner wall of the cylindrical placement groove. The depth of the cylindrical placement groove is less than the height of the aluminum electrolytic capacitor, and the inner diameter of the annular rubber layer is not greater than the outer diameter of the aluminum electrolytic capacitor. Several cylindrical placement grooves are provided, and the several cylindrical placement grooves are evenly distributed in a rectangular array.

[0008] Preferably, the elastic connecting pad is a high-hardness, low-elasticity insulating rigid rubber, which is one of styrene-butadiene rigid rubber, nitrile rigid rubber, and chloroprene rigid rubber.

[0009] Preferably, four piezoelectric ceramic vibrators are provided, and the four piezoelectric ceramic vibrators are rectangularly distributed on the lower end surface of the adhesive plate. The four piezoelectric ceramic vibrators are connected in parallel with the electrical connector, and the four piezoelectric ceramic vibrators work synchronously.

[0010] Preferably, the length direction of the rear limiting plate is set along the length direction of the worktable, the length direction of the side limiting plate is set along the width direction of the worktable, and the height of the side limiting plate is greater than the height of the disc body.

[0011] Preferably, the fastener includes a first horizontal plate disposed at the front end of the side limiting plate. The first horizontal plate is located on the side surface of the side limiting plate close to the disc body and is located above the side of the disc body. An internal threaded hole is provided vertically along the upper edge of the first horizontal plate, and a fastening bolt is adapted to be disposed in the internal threaded hole.

[0012] Preferably, there are two side limiting plates, which are located on the left and right sides of the disc body respectively; the front end of each side limiting plate is also provided with a side guide plate, and the other ends of the two side guide plates are inclined in a direction away from each other.

[0013] Preferably, there are two micro-vibration glue-applying discs, which are symmetrically arranged on the worktable.

[0014] Preferably, an adhesive applicator is also provided above the workbench for applying adhesive to the port of the aluminum electrolytic capacitor casing. The adhesive applicator is connected to the workbench via a vertical displacement component, a horizontal displacement component, and a longitudinal displacement component.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This utility model discloses a glue-applying device for the outer shell of an aluminum electrolytic capacitor. By setting a micro-vibration glue-applying tray with a glue-applying plate separated from the tray body, and setting a piezoelectric ceramic vibrating plate at the lower end of the glue-applying plate, the piezoelectric ceramic vibrating plate can generate low-frequency vibration during glue application, which can drive the glue liquid at the port of the aluminum electrolytic capacitor shell to flow. This can better ensure that the glue liquid is evenly distributed on the port of the aluminum electrolytic capacitor shell, resulting in uniform sealing and reducing the problem of poor sealing caused by free flow of glue liquid. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the rear limiting plate structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the micro-vibration type glued disc structure of this utility model.

[0021] Figure 4 This utility model Figure 3 A magnified view of part A.

[0022] Figure 5 This is a cross-sectional schematic diagram of the micro-vibration adhesive-coated disc of this utility model.

[0023] Figure 6 This utility model Figure 5 A magnified view of part B.

[0024] Figure 7 This is a schematic diagram of the adhesive application component of this utility model.

[0025] In the diagram: 1. Workbench; 2. Micro-vibration glue-applying tray; 21. Tray body; 22. Glue-applying plate; 23. Elastic connecting pad; 24. Piezoelectric ceramic vibrating plate; 25. Cylindrical placement slot; 26. Electrical connection plug; 27. Electrical connection socket; 28. Annular rubber layer; 3. Rear end limiting plate; 4. Side limiting plate; 5. Fastener; 51. First horizontal plate; 52. Fastening bolt; 6. Side guide plate; 7. Glue-applying assembly; 71. Glue-applying base; 72. Glue dispensing head; 73. Connecting rod; 74. Glue dispensing pump; 75. Glue dispensing main pipe; 76. Glue dispensing branch pipe; 8. Vertical displacement assembly; 81. Displacement plate; 82. Second horizontal plate; 83. Telescopic cylinder; 84. Movable plate; 91. Horizontal cover; 92. First lead screw; 93. First motor; 94. First guide rail; 101. Longitudinal cover; 102. Second lead screw; 103. First guide rod; 104. Movable block; 11. Column. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] This utility model provides a device for gluing the outer shell of an aluminum electrolytic capacitor, see reference. Figure 1-7The device includes a worktable 1 and a micro-vibration adhesive application tray 2 placed on the upper end of the worktable 1. The upper surface of the worktable 1 is also provided with a rear limiting plate 3 and a side limiting plate 4 for limiting the position of the micro-vibration adhesive application tray 2. The length direction of the rear limiting plate 3 is along the length direction of the worktable 1, and the length direction of the side limiting plate 4 is along the width direction of the worktable 1. The height of the side limiting plate 4 is greater than the height of the tray body 21. The micro-vibration adhesive application tray 2 includes a tray body 21. A groove is formed at the upper end of the disc body 21. A rubber-coated plate 22 is horizontally arranged in the groove. An elastic connecting pad 23 is provided between the lower end face of the rubber-coated plate 22 and the bottom of the groove. The elastic connecting pad 23 is a high-hardness, low-elasticity insulating hard rubber, which is one of styrene-butadiene hard rubber, nitrile hard rubber, and neoprene hard rubber. A piezoelectric ceramic vibrating plate 24 is also provided at the upper end of the elastic connecting pad 23 and connected to the lower end face of the rubber-coated plate 22. The rear of the disc body 21... The end is provided with two electrical connectors 26, which are respectively electrically connected to both sides of the piezoelectric ceramic vibrating plate 24 via wires. The front end face of the rear limiting plate 3 is provided with two electrical connection sockets 27 adapted to the electrical connectors 26. Several elastic conductive sheets are arranged around its axial direction inside the electrical connection sockets 27. The elastic conductive sheets are electrically connected to external signal generators and voltage amplifiers. The upper end of the side limiting plate 4 is also provided with fasteners 5 for fastening the micro-vibration adhesive plate 2. The upper end face of the adhesive plate 22 is provided with a cylindrical placement groove 25 for placing aluminum electrolytic capacitors. An annular rubber layer 28 is coaxially arranged on the inner wall of the cylindrical placement groove 25. The depth of the cylindrical placement groove 25 is less than the height of the aluminum electrolytic capacitor, and the inner diameter of the annular rubber layer 28 is not greater than the outer diameter of the aluminum electrolytic capacitor. Several cylindrical placement grooves 25 are provided, and the several cylindrical placement grooves 25 are evenly distributed in a rectangular array. After the electrical connector 26 contacts the elastic conductive sheet, a voltage can be applied to both sides of the piezoelectric ceramic vibrating sheet 24, causing the internal lattice structure to deform, resulting in the overall elongation or contraction of the material, which in turn generates low-frequency vibration (such as 50-100Hz). The low-frequency vibration can drive the adhesive at the port of the aluminum electrolytic capacitor shell to flow slowly, which facilitates the removal of air bubbles at the port of the aluminum electrolytic capacitor shell and also makes the adhesive more evenly distributed on the port of the aluminum electrolytic capacitor shell, resulting in uniform sealing and reducing the problem of poor sealing caused by the free flow of adhesive. It should be noted that the amplitude of the micro-vibration is 0.05-0.1mm, which will not affect the adhesive dispensing operation of the dispensing head 72 on the port of the capacitor shell.

[0029] Four piezoelectric ceramic vibrating plates 24 are provided, and the four piezoelectric ceramic vibrating plates 24 are rectangularly distributed on the lower end surface of the adhesive plate 22. The four piezoelectric ceramic vibrating plates 24 are connected in parallel with the electrical connector 26, and the four piezoelectric ceramic vibrating plates 24 work synchronously. This can improve the uniformity of micro-vibration of the adhesive plate 22.

[0030] The fastener 5 includes a first horizontal plate 51 located at the front end of the side limiting plate 4. The first horizontal plate 51 is located on the side surface of the side limiting plate 4 near the disc body 21 and is positioned above the side of the disc body 21. The first horizontal plate 51 has a vertically threaded hole along its upper edge, and a fastening bolt 52 is fitted into the threaded hole. The disc body 21 is inserted between the two side limiting plates 4, and the rear end face of the disc body 21 is aligned with the front end face of the rear end limiting plate 3. At this time, the electrical connector 26 is also inserted into the electrical connector socket 27. Then, by tightening the fastening bolt 52, the lower end of the fastening bolt 52 presses against the upper side of the disc body 21, thereby fixing the disc body 21 and preventing it from moving due to vibration.

[0031] Two side limiting plates 4 are provided, located on the left and right sides of the disc body 21 respectively; a side guide plate 6 is also provided at the front end of each side limiting plate 4, and the other ends of the two side guide plates 6 are inclined in a direction away from each other. The side guide plates 6 make it easier to insert the disc body 21 between the two side limiting plates 4.

[0032] Two micro-vibration glue-applying trays 2 are provided, symmetrically arranged on the worktable 1. The two micro-vibration glue-applying trays 2 work alternately. While one is applying glue, the other is removing the glued tray and placing a new one to be glued, which can improve the efficiency of applying glue to the outer shell of aluminum electrolytic capacitors.

[0033] Above the workbench 1, there is also a glue-applying assembly 7 for applying glue to the port of the aluminum electrolytic capacitor shell. The glue-applying assembly 7 is connected to the workbench 1 through a vertical displacement assembly 8, a horizontal displacement assembly, and a longitudinal displacement assembly.

[0034] The longitudinal displacement assembly includes a longitudinal cover 101, the length of which is arranged along the width of the worktable 1. The front and rear ends of the lower end face of the longitudinal cover 101 are respectively connected to the worktable 1 via columns 11. A second lead screw 102 and a first guide rod 103 are arranged inside the longitudinal cover 101 along its length. A second ball nut block is adapted to the second lead screw 102, and a first guide hole that mates with the first guide rod 103 is adapted to the second ball nut block. A second motor for driving the second lead screw 102 is arranged at the rear end of the longitudinal cover 101. There are two longitudinal displacement assemblies, which are symmetrically arranged at the left and right ends of the worktable 1.

[0035] The lateral displacement assembly includes a lateral cover 91, the length of which is arranged along the length of the worktable 1. The left and right ends of the lower end face of the lateral cover 91 are respectively connected to two second ball bearing nut blocks via movable blocks 104. A first lead screw 92 is arranged inside the lateral cover 91 along its length, and a first ball bearing nut block is adapted on the first lead screw 92. A first motor 93 for driving the first lead screw 92 is arranged at the left end of the lateral cover 91.

[0036] The vertical displacement component 8 includes a displacement plate 81. The rear end face of the displacement plate 81 is connected to the front end of the first ball nut block through a second movable block. The front end face of the transverse cover 91 is also provided with a first guide rail 94 along its length. The rear end face of the displacement plate 81 is provided with a first slider that is adapted to the first guide rail 94. The upper end of the front end face of the displacement plate 81 is provided with a second horizontal plate 82. Two telescopic cylinders 83 are vertically downwardly arranged on the second horizontal plate 82. The telescopic end of the telescopic cylinder 83 is provided with a movable plate 84.

[0037] The glue dispensing assembly 7 includes a glue dispensing base 71 and a glue pump 74 disposed on the front end face of the movable plate 84. A glue dispensing head 72 is disposed on the front end face of the glue dispensing base 71. The upper end of the glue dispensing base 71 is connected to the lower end face of the movable plate 84 via a connecting rod 73. The glue outlet end of the glue pump 74 is connected to a glue outlet main pipe 75. The other end of the glue outlet main pipe 75 is connected to the glue dispensing head 72 via a glue outlet branch pipe 76. A solenoid valve is also disposed on the glue dispensing base 71 at the glue inlet end of the glue dispensing head 72. The glue inlet end of the glue pump 74 is connected to a glue reservoir via a glue inlet pipe.

[0038] The dispensing heads 72 are provided in a plurality of positions, arranged evenly at equal intervals from left to right on the dispensing base 71. Preferably, there are six dispensing heads 72, which dispense and stop dispensing glue simultaneously. The cylindrical placement slots 25, evenly distributed in a rectangular array, are preferably arranged in a 12*12 array. The six dispensing heads 72 can simultaneously apply glue to the ports of six aluminum electrolytic capacitor casings.

[0039] Working principle:

[0040] Before applying the adhesive, the aluminum electrolytic capacitor to be adhesiveed needs to be placed upside down inside each cylindrical placement slot 25. The disc body 21 is inserted between the two side limiting plates 4, and the rear end face of the disc body 21 is aligned with the front end face of the rear limiting plate 3. At this time, the electrical connection plug 26 is also inserted into the electrical connection socket 27, and the piezoelectric ceramic vibrating plate 24 starts working. Then, the disc body 21 is fixed by tightening the fastening bolt 52. During the adhesive application, the lateral displacement component and the longitudinal displacement component drive the six dispensing heads 42 to move to the position directly above the six cylindrical placement slots 25 on the left side of the first row in front of the adhesive application plate 22 according to the preset working parameters and trajectory. Then, by the downward movement of the telescopic cylinder 83, the lower end of the dispensing head 42 is brought close to the port of the aluminum electrolytic capacitor shell. The dispensing pump 74 then operates. The preset amount of adhesive is injected into the port of the outer casing. Then, the telescopic cylinder 83 moves upward, moving the dispensing head 42 away from the aluminum electrolytic capacitor. Then, the longitudinal displacement component moves the six dispensing heads 42 to the position directly above the six cylindrical placement slots 25 on the left side of the second row in front of the dispensing plate 22 for dispensing. This process is repeated until all the aluminum electrolytic capacitors on the dispensing plate 22 have been dispensed. After completion, the lateral displacement component and the longitudinal displacement component move the six dispensing heads 42 to the position directly above the six cylindrical placement slots 25 on the left side of the first row in front of the dispensing plate 22 on the right side according to the preset working parameters and trajectory, and start a new round of dispensing. After completion, they return to the position directly above the six cylindrical placement slots 25 on the left side of the first row in front of the dispensing plate 22 on the left side.

[0041] In the description of this utility model, it should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0042] Furthermore, in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] On the other hand, it should be noted that, unless otherwise explicitly specified and limited, the terms "located at," "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections, rotating connections, or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An aluminum electrolytic capacitor shell gluing device comprising a workbench (1), characterized in that: Also include the micro-vibration type glue disc (2) is placed on the upper end of the workbench (1), the upper end surface of the workbench (1) is also provided with rear end limiting plate (3), side limiting plate (4) for limiting micro-vibration type glue disc (2), the micro-vibration type glue disc (2) includes disc body (21), the upper end of the disc body (21) is provided with a groove, the glue plate (22) is horizontally arranged in the groove, the lower end surface of the glue plate (22) and the bottom of the groove are provided with elastic connecting pad (23), the upper end of the elastic connecting pad (23) is also provided with piezoelectric ceramic vibration piece (24) connected with the lower end surface of the glue plate (22), the rear end of the disc body (21) is provided with two electric connection plug (26), two electric connection plug (26) is respectively connected with the two sides of piezoelectric ceramic vibration piece (24) through the wire, the front end surface of the rear end limiting plate (3) is provided with two electric connection jack (27) matched with the electric connection plug (26), the upper end of the side limiting plate (4) is also provided with fastener (5) for fastening micro-vibration type glue disc (2).

2. The housing gluing device for aluminum electrolytic capacitor according to claim 1, wherein The upper end surface of the glue plate (22) is provided with a cylindrical placement groove (25) for placing aluminum electrolytic capacitor along the vertical direction, and a ring-shaped rubber layer (28) is coaxially arranged on the inner wall of the cylindrical placement groove (25), the depth of the cylindrical placement groove (25) is less than the height of the aluminum electrolytic capacitor, and the inner diameter of the ring-shaped rubber layer (28) is not greater than the outer diameter of the aluminum electrolytic capacitor.

3. The apparatus for gluing the housing of an aluminum electrolytic capacitor according to claim 2, wherein The cylindrical placement groove (25) is provided with a plurality of cylindrical placement grooves (25) which are evenly distributed in a rectangular array.

4. The apparatus for gluing the housing of an aluminum electrolytic capacitor according to claim 1, wherein The elastic connecting pad (23) is high-hardness, low-elasticity insulating hard rubber, and the insulating hard rubber is one of butadiene styrene hard rubber, butyronitrile hard rubber and chlorobutyl hard rubber.

5. The apparatus of claim 1, wherein the apparatus further comprises a glue applicator. The piezoelectric ceramic vibration piece (24) is provided with four piezoelectric ceramic vibration pieces (24) which are distributed in a rectangular shape on the lower end surface of the glue plate (22), and the four piezoelectric ceramic vibration pieces (24) are connected in parallel with the electric connection plug (26), and the four piezoelectric ceramic vibration pieces (24) work synchronously.

6. The housing gluing device for aluminum electrolytic capacitor according to claim 1, wherein The length direction of the rear end limiting plate (3) is arranged along the length direction of the workbench (1), the length direction of the side limiting plate (4) is arranged along the width direction of the workbench (1), and the height of the side limiting plate (4) is greater than the height of the disc body (21).

7. The apparatus of claim 6, wherein the apparatus further comprises a glue applicator. The fastener (5) includes a first horizontal plate (51) arranged at the front end of the side limiting plate (4), the first horizontal plate (51) is located on the side surface of the disc body (21) close to the side limiting plate (4), and the first horizontal plate (51) is located above the side of the disc body (21), an inner threaded hole is arranged vertically on the first horizontal plate (51), and a fastening bolt (52) is matched in the inner threaded hole.

8. The apparatus of claim 7, wherein the apparatus further comprises a glue applicator. The side limiting plate (4) is provided with two side limiting plates (4) which are respectively located on the left and right sides of the disc body (21).

9. The apparatus of claim 8, wherein the apparatus further comprises a glue applicator. The front end of the side limiting plate (4) is also provided with a side guide plate (6), and the other end of the two side guide plates (6) is inclined away from each other.

10. The housing gluing device for aluminum electrolytic capacitor according to any one of claims 1 to 9, wherein The micro-vibration type glue adding disc (2) is provided with two, and the two micro-vibration type glue adding discs (2) are symmetrically arranged on the workbench (1).

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