An aluminum electrolytic capacitor assembly machine rubber plug feeding device
By heating the rubber stopper during the assembly process of aluminum electrolytic capacitors and using an orientation device, the problem of core gaps or misalignment caused by the hardness of the rubber stopper was solved, thus improving the accuracy of assembly and product quality.
Patent Information
- Application Number
- CN202311030141.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-16
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2043-08-16
AI Technical Summary
During the assembly of aluminum electrolytic capacitors, excessive hardness of the rubber plug can lead to an excessive gap or misalignment between the core and the rubber plug, resulting in short circuits and affecting product quality.
It employs a rubber plug vibrating conveyor, a heater, and an orientation device. The rubber plug is softened by heating, and the orientation device ensures accurate insertion into the core package. This includes the use of heating tubes or heating strips, a slot, a push rod, and a selection pin.
This effectively avoids excessive gaps or misalignment between the core pack and the rubber stopper, improving assembly accuracy and product quality, and reducing the scrap rate.
Smart Images

Figure CN117001303B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a production equipment for aluminum electrolytic capacitors, and more particularly to a feeding device for rubber stoppers in an aluminum electrolytic capacitor assembly machine. Background Technology
[0002] The hardness of the rubber plugs in aluminum electrolytic capacitors is generally between 75 and 85 Shore degrees. Relatively thick rubber plugs are very easy to cause abnormalities such as excessive gap between the core and the rubber plug, and core misalignment during the assembly process due to excessive hardness of the rubber plug.
[0003] When the rubber stopper of an aluminum electrolytic capacitor has an excessive gap with the core or the core is misaligned, a short circuit can easily occur between the core and the outer casing, rendering the aluminum electrolytic capacitor unusable. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a feeding device for rubber plugs of an aluminum electrolytic capacitor assembly machine.
[0005] To solve the above-mentioned technical problems, the technical solution proposed by the present invention is as follows: a feeding device for rubber plugs of an aluminum electrolytic capacitor bank assembly machine, comprising a rubber plug vibrating conveyor plate, a flat conveying track, a heater and a rubber plug orienting device, wherein the outlet of the rubber plug vibrating conveyor plate is connected to the flat conveying track, the heater is set outside the flat conveying track and heats the rubber plugs inside the flat conveying track; the rubber plug orienting device is set at the end of the flat conveying track.
[0006] In the above-mentioned feeding device for the rubber plug of the aluminum electrolytic capacitor assembly machine, preferably, the heater is a heating tube, which is wound around the outside of the flat conveying track.
[0007] In the aforementioned feeding device for the rubber plugs of the aluminum electrolytic capacitor assembly machine, preferably, the heater is a heating strip, which is arranged above and below the flat conveying track.
[0008] Preferably, in the above-mentioned feeding device for rubber plugs of aluminum electrolytic capacitor bank assembly machine, the rubber plug orientation device includes a slot, a push rod, and a selection pin; the slot is located at the discharge port of the flat conveyor track and is connected to the flat conveyor track; the push rod is located above the slot and is connected to a cylinder or hydraulic cylinder, and the push rod pushes the rubber plug in the slot downward onto the selection pin; the selection pin is located on a base, and the base is connected to a rotating shaft.
[0009] Preferably, in the above-mentioned feeding device for the rubber plug of the aluminum electrolytic capacitor assembly machine, the slot is U-shaped, and two rubber-blocking strips are provided at the bottom of the slot. The side of the rubber-blocking strips that contacts the rubber plug is inclined. The rubber plug is supported by the two rubber-blocking strips in the slot, and the width of the bottom of the rubber plug resting on the rubber-blocking strips does not exceed 2mm.
[0010] In the above-mentioned feeding device for the rubber plug of the aluminum electrolytic capacitor assembly machine, preferably, the distance from the top of the selection needle to the rubber-blocking strip is less than the thickness of the rubber plug.
[0011] Preferably, in the above-mentioned feeding device for the rubber plug of the aluminum electrolytic capacitor assembly machine, there are two selecting needles, and the distance between the two selecting needles is equal to the distance between the two through holes on the rubber plug.
[0012] In the above-mentioned feeding device for the rubber plug of the aluminum electrolytic capacitor assembly machine, preferably, the length of the selection needle is one-third to two-thirds of the thickness of the rubber plug.
[0013] Compared with the prior art, the advantages of the present invention are as follows: In the present invention, the rubber stopper is heated during the flat conveying stage, so that the rubber stopper softens and the core package will not have an excessive gap or the core package will be skewed when the rubber stopper is assembled. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the feeding device for the rubber stopper of the aluminum electrolytic capacitor assembly machine in Example 1.
[0015] Figure 2 This is a schematic diagram of the existing horizontal conveyor track.
[0016] Figure 3 This is a schematic diagram of the rubber stopper orienting device in Example 1.
[0017] Figure 4 This is a schematic diagram of the hole selection needle in Example 1.
[0018] Figure 5 This is a schematic diagram of the card slot structure in Example 1.
[0019] Legend
[0020] 1. Vibrating conveyor plate; 2. Flat conveyor track; 3. Heater; 4. Rubber plug orienting device; 41. Slot; 411. Rubber baffle strip; 42. Top rod; 43. Orifice pin; 44. Base; 45. Rotating shaft; 5. Rubber plug. Detailed Implementation
[0021] To facilitate understanding of the present invention, the present invention will be described more fully and in detail below with reference to preferred embodiments, but the scope of protection of the present invention is not limited to the following specific embodiments.
[0022] It should be noted that when a component is described as being "fixed to, attached to, connected to or connected to" another component, it can be directly fixed to, attached to, connected to or connected to the other component, or it can be indirectly fixed to, attached to, connected to or connected to the other component through other intermediate connectors.
[0023] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of the invention. Example
[0024] like Figure 1 The device shown is a feeding device for rubber plugs in an aluminum electrolytic capacitor bank assembly machine. It includes a rubber plug vibrating conveyor 1, a flat conveying track 2, a heater 3, and a rubber plug orienting device 4. The outlet of the rubber plug vibrating conveyor 1 is connected to the flat conveying track 2. The heater 3 is located outside the flat conveying track 2 and heats the rubber plugs inside the flat conveying track 2. The rubber plug orienting device 4 is located at the end of the flat conveying track 2.
[0025] In this embodiment, as Figure 1 As shown, the heater is a heating tube, which is wrapped around the outside of the flat conveyor track 2. In this embodiment, the rubber plug is heated to 80-150°C inside the flat conveyor track. The time from when the rubber plug comes out of the flat conveyor track to when the assembly is completed is relatively short. During assembly, the temperature of the rubber plug can be maintained at 70-130°C, at which temperature the rubber plug is relatively soft. In this embodiment, to ensure the heating effect of the heating tube, the heating tube and the flat conveyor track 2 can be wrapped with insulation material. In other embodiments, the heater can be a heating strip, which is set above and below the flat conveyor track 2. In existing flat conveyor tracks 2, such as... Figure 2 As shown, there is no heater for the rubber stopper 5. In this embodiment, the rubber stopper 5 is heated during the flat conveying stage to soften it, thus preventing excessive gaps between the core packing and the rubber stopper 5 or core packing misalignment during assembly.
[0026] like Figure 3 As shown, the rubber stopper orienting device 4 includes a slot 41, a push rod 42, and a selection pin 43; the slot 41 is located at the discharge port of the flat conveyor track 2 and is connected to the flat conveyor track 2; the push rod 42 is located above the slot 41 and is connected to a cylinder or hydraulic cylinder, and the push rod 42 pushes the rubber stopper 5 in the slot 41 downwards onto the selection pin 43. Figure 4As shown, the selection needle 43 is mounted on the base 44, which is connected to the rotating shaft 45. The length of the selection needle 43 is one-third to two-thirds of the thickness of the rubber plug 5. In this embodiment, the top of the selection needle 43 is arc-shaped. When the push rod 42 pushes the rubber plug out of the slot 41, and the rubber plug reaches the position of the selection needle 43, since the selection needle 43 is constantly rotating, as the push rod 42 presses down on the rubber plug 5, the two selection needles 43 will be inserted into the two through holes of the rubber plug respectively. When the rubber plug just hits the selection needle 43, the selection needle 43 will actually hit the bottom of the rubber plug 5. Since the rubber plug has a certain elasticity, even if the rubber plug exerts some pressure on the selection needle 43, the selection needle 43 can still rotate on the rubber plug, allowing the selection needle 43 to be inserted into the through hole on the rubber plug 5. In this embodiment, since the rubber plug is heated and softened at the position of the flat conveyor track 2, it is easier for the selection needle 43 to rotate on the rubber plug.
[0027] In this embodiment, there are two selection needles 43, and the distance between the two selection needles 43 is equal to the distance between the two through holes on the rubber stopper 5. The distance from the top of the selection needle 43 to the rubber-blocking strip 411 is less than the thickness of the rubber stopper; when the push rod 42 pushes the rubber stopper out of the slot 41, the rubber stopper is not completely removed from the slot 41, and the selection needle 43 completes the selection of the rubber stopper, with the selection needle 43 inserted into the two through holes of the rubber stopper.
[0028] like Figure 5 As shown, the slot 41 is U-shaped, and two opposing rubber-blocking strips 411 are provided at the bottom of the slot 41. The side of the rubber-blocking strips 411 that contacts the rubber plug 5 is inclined. The rubber plug is supported by the two rubber-blocking strips 411 in the slot 41, and the width of the bottom of the rubber plug overlapping the rubber-blocking strips 411 does not exceed 2mm. In this embodiment, the width of the bottom of the rubber plug overlapping the rubber-blocking strips 411 does not exceed 2mm, meaning that the total width of the bottom of the rubber plug overlapping the two rubber-blocking strips 411 does not exceed 2mm. In this embodiment, since the rubber plug is heated and softened in the flat conveying track 2, it is relatively soft when it enters the slot 41, and the push rod 42 can easily push the rubber plug out of the slot 41.
Claims
1. A feeding device for rubber stoppers in an aluminum electrolytic capacitor assembly machine, characterized in that: The rubber plug vibration conveying disc, the flat conveying track, the heater and the rubber plug orientation device are included, the discharge port of the rubber plug vibration conveying disc is connected with the flat conveying track, the heater is arranged outside the flat conveying track and heats the rubber plug in the flat conveying track, and the rubber plug orientation device is arranged at the tail end of the flat conveying track. The rubber plug orientation device includes a clamping groove, a lifting rod and a hole selection needle, the clamping groove is arranged at the discharge port of the flat conveying track and is connected with the flat conveying track, the lifting rod is arranged above the clamping groove, the lifting rod is connected with a pneumatic cylinder or an oil cylinder, and the lifting rod pushes the rubber plug in the clamping groove downward to the hole selection needle, and the hole selection needle is arranged on a base, and the base is connected with a rotating shaft. The top end of the hole selection needle is in an arc shape, the hole selection needle has two, the distance between the two hole selection needles is equal to the distance between the two through holes of the rubber plug, and the length of the hole selection needle is one third to two thirds of the thickness of the rubber plug. The clamping groove is in a U shape, the bottom of the clamping groove is provided with two opposite rubber blocking strips, one side of the rubber blocking strip in contact with the rubber plug is arranged in an inclined manner, the rubber plug is supported by the two rubber blocking strips in the clamping groove, and the width of the bottom of the rubber plug on the rubber blocking strip is not more than 2mm. The distance from the top of the hole selection needle to the rubber blocking strip is less than the thickness of the rubber plug, when the lifting rod pushes the rubber plug out of the clamping groove, the rubber plug has not completely separated from the clamping groove, the hole selection needle completes the hole selection of the rubber plug, and the hole selection needle is inserted into the two through holes of the rubber plug.
2. The feeding device of rubber plug for aluminum electrolytic capacitor assembly machine according to claim 1, characterized in that: The heater is a heating pipe, and the heating pipe is wound outside the flat conveying track.
3. The feeding device of rubber plug for aluminum electrolytic capacitor assembly machine according to claim 1, characterized in that: The heater is a heating strip, and the heating strip is arranged above and below the flat conveying track.
Citation Information
Patent Citations
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