阅读说明：本技术 卷绕喷涂一体化制程及装置 (Winding and spraying integrated process and device ) 是由 张晋福 庄志庸 于 2019-08-01 设计创作，主要内容包括：一种卷绕喷涂一体化制程,包含以下步骤：(A)将正箔、第一电解纸、负箔与第二电解纸依序叠设且以卷芯为轴心卷绕。(B)制备正极喷头及负极喷头,于卷绕过程中,所述正极喷头与所述负极喷头喷涂电解液而使所述第一电解纸与所述第二电解纸浸润电解液。(C)于卷绕预定长度后,所述正极喷头及所述负极喷头停止喷涂,裁切所述正箔、所述第一电解纸、所述负箔与所述第二电解纸,并进行卷绕的末端固定。借此,能使所述第一电解纸与所述第二电解纸于卷绕过程中同时浸润电解液,所以可以将含浸制程合并于卷绕制程中,并省去整个含浸装置的安装,因此,可以大幅提高卷绕式电容器的制作效率并降低制作成本。(A winding and spraying integrated process comprises the following steps: (A) the positive foil, the first electrolytic paper, the negative foil and the second electrolytic paper are sequentially stacked and wound around the winding core. (B) And preparing an anode nozzle and a cathode nozzle, and spraying electrolyte by the anode nozzle and the cathode nozzle in a winding process to enable the first electrolytic paper and the second electrolytic paper to soak the electrolyte. (C) And after winding for a preset length, stopping spraying by the anode nozzle and the cathode nozzle, cutting the positive foil, the first electrolytic paper, the negative foil and the second electrolytic paper, and fixing the winding tail end. Therefore, the first electrolytic paper and the second electrolytic paper can be simultaneously soaked in the electrolyte in the winding process, so that the impregnation process can be combined in the winding process, and the installation of the whole impregnation device is omitted, thereby greatly improving the manufacturing efficiency of the winding type capacitor and reducing the manufacturing cost.)

1. The utility model provides a coiling spraying integration processing procedure, is applicable to and participates in making coiling formula condenser which characterized in that:

the winding and spraying integrated process comprises the following steps:

(A) preparing a roll core, positive foil, first electrolytic paper, negative foil and second electrolytic paper, sequentially stacking the positive foil, the first electrolytic paper, the negative foil and the second electrolytic paper, and winding by taking the roll core as an axis;

(B) preparing an anode nozzle and a cathode nozzle, wherein in the winding process of the step (A), the anode nozzle and the cathode nozzle spray electrolyte to enable the first electrolytic paper and the second electrolytic paper to be soaked in the electrolyte in the winding process respectively; and

(C) after the preset length is wound in the step (A), the spraying of the anode nozzle and the cathode nozzle is stopped, the positive foil, the first electrolytic paper, the negative foil and the second electrolytic paper are cut, and the tail end of the winding is fixed.

2. The winding and spraying integrated process according to claim 1, wherein: in the step (B), the positive electrode nozzle and the negative electrode nozzle spray the electrolyte toward the positive foil and the negative foil, respectively, so that the first electrolytic paper and the second electrolytic paper are adhered to soak the electrolyte in the winding process.

3. The winding and spraying integrated process according to claim 1, wherein: in the step (B), the spraying process of the anode nozzle and the cathode nozzle is divided into an initial stage, a continuous stage and a final stage, and the spraying amount per unit time in the continuous stage is greater than the spraying amount per unit time in the initial stage and the final stage.

4. The winding and spraying integrated process according to claim 2, wherein: and (B) preparing a first spray head and a second spray head, wherein the first spray head and the second spray head respectively spray electrolyte to the first electrolytic paper and the second electrolytic paper in the winding process of the step (A).

5. The winding and spraying integrated process according to claim 4, wherein: the spraying amount of the first sprayer and the second sprayer per unit time is smaller than that of the anode sprayer and that of the cathode sprayer.

6. A winding and spraying integrated device is suitable for manufacturing a winding capacitor and comprises a conveying unit and a winding unit;

the conveying unit comprises four raw material conveying modules, and the raw material conveying modules are respectively suitable for arranging positive foil, first electrolytic paper, negative foil and second electrolytic paper so as to enable the positive foil, the first electrolytic paper, the negative foil and the second electrolytic paper to be sequentially stacked in layers and output towards the direction of a winding axis;

the winding unit is suitable for arranging a winding core at the position of the winding axis, and winding the positive foil, the first electrolytic paper, the negative foil and the second electrolytic paper by taking the winding axis as the axis;

the method is characterized in that:

the winding and spraying integrated device further comprises a spraying unit, the spraying unit comprises an anode spray head and a cathode spray head which are used for spraying electrolyte, and a control module which is in signal connection with the anode spray head and the cathode spray head, and the anode spray head and the cathode spray head enable the first electrolytic paper and the second electrolytic paper to soak the electrolyte in the winding process respectively.

7. The winding and spraying integrated device according to claim 6, wherein: the positive electrode sprayer and the negative electrode sprayer are respectively arranged corresponding to the positive foil and the negative foil and are respectively used for spraying electrolyte to the positive foil and the negative foil so that the first electrolytic paper and the second electrolytic paper are adhered to soak the electrolyte in the winding process.

8. The winding and spraying integrated device according to claim 6, wherein: the control module controls the spraying process of the anode spray head and the cathode spray head to be divided into an initial stage, a continuous stage and a final stage, and the spraying amount per unit time in the continuous stage is larger than the spraying amount per unit time in the initial stage and the final stage.

9. The winding and spraying integrated device according to claim 7, wherein: the spraying unit further comprises a first sprayer and a second sprayer which are respectively arranged corresponding to the first electrolytic paper and the second electrolytic paper and are in signal connection with the control module, and the first sprayer and the second sprayer are respectively used for spraying electrolyte towards the first electrolytic paper and the second electrolytic paper.

10. The winding and spraying integrated device according to claim 9, wherein: the spraying amount of the first sprayer and the second sprayer per unit time is smaller than that of the anode sprayer and that of the cathode sprayer.

Technical Field

The present invention relates to a process and an apparatus for manufacturing a capacitor, and more particularly, to a winding and spraying integrated process and an apparatus for manufacturing a wound capacitor.

Background

Capacitors are basic electronic components, are used in large quantities in electronic equipment, and have various shapes and configurations. Among them, the process of the wound capacitor (such as liquid electrolytic capacitor) can be roughly divided into the following steps: cutting (stapling), stapling, winding (winding), impregnating (impregnating), assembling (assembling), cleaning (cleaning), sleeving (winding), aging (bonding), sorting (curing), and molding (forming).

In the winding process, positive foil and negative foil which are respectively riveted with a positive electrode and a negative electrode are overlapped with electrolytic paper to be wound into a prime, the winding tail end is fixed through electronic adhesive tape or electronic glue, and in the next impregnation process, the prime is vacuumized and then immersed in electrolyte, so that the electrolytic paper can be soaked in the electrolyte to have capacitance.

However, since the large capacitor with a diameter of 16mm or more has a large volume, it often takes a long time to fully wet the electrolytic paper in the impregnation process, for example, a furnace of the large capacitor usually needs 3 to 4 hours of wetting time, and a large amount of defective products with insufficient wetting are often generated, so that the yield of the large capacitor is only about 60%.

Disclosure of Invention

The invention aims to provide a winding and spraying integrated process capable of improving the manufacturing efficiency and yield of a large capacitor.

The winding and spraying integrated process is suitable for manufacturing a winding capacitor, and comprises the following steps:

(A) preparing a roll core, positive foil, first electrolytic paper, negative foil and second electrolytic paper, and sequentially stacking the positive foil, the first electrolytic paper, the negative foil and the second electrolytic paper and winding by using the roll core as an axis.

(B) Preparing an anode nozzle and a cathode nozzle, wherein in the winding process of the step (A), the anode nozzle and the cathode nozzle spray electrolyte to enable the first electrolytic paper and the second electrolytic paper to be soaked in the electrolyte in the winding process respectively.

(C) After the preset length is wound in the step (A), the spraying of the anode nozzle and the cathode nozzle is stopped, the positive foil, the first electrolytic paper, the negative foil and the second electrolytic paper are cut, and the tail end of the winding is fixed.

In the step (B), the positive nozzle and the negative nozzle spray the electrolyte toward the positive foil and the negative foil, respectively, so that the first electrolytic paper and the second electrolytic paper are adhered to soak the electrolyte during the winding process.

In the winding and spraying integrated process, in the step (B), the spraying process of the anode spray head and the cathode spray head is divided into an initial stage, a continuous stage and a final stage, and the spraying amount per unit time in the continuous stage is greater than the spraying amount per unit time in the initial stage and the final stage.

In the winding and spraying integrated process, a first spray head and a second spray head are also prepared in the step (B), and the first spray head and the second spray head respectively spray electrolyte to the first electrolytic paper and the second electrolytic paper in the winding process of the step (A).

In the winding and spraying integrated process, the spraying amount of the first spray head and the second spray head per unit time is smaller than that of the anode spray head and that of the cathode spray head per unit time.

The invention aims to provide a winding and spraying integrated device which can improve the manufacturing efficiency and yield of a large capacitor.

The winding and spraying integrated device is suitable for manufacturing winding type capacitors and comprises a conveying unit, a winding unit and a spraying unit.

The conveying unit comprises four raw material conveying modules, and the raw material conveying modules are respectively suitable for arranging positive foil, first electrolytic paper, negative foil and second electrolytic paper so as to enable the positive foil, the first electrolytic paper, the negative foil and the second electrolytic paper to be sequentially stacked in layers and output towards the direction of a winding axis.

The winding unit is suitable for a winding core arranged at the position of the winding axis and takes the winding axis as the axis to wind the positive foil, the first electrolytic paper, the negative foil and the second electrolytic paper.

The spraying unit comprises an anode nozzle and a cathode nozzle for spraying electrolyte and a control module in signal connection with the anode nozzle and the cathode nozzle, and the anode nozzle and the cathode nozzle enable the first electrolytic paper and the second electrolytic paper to soak the electrolyte in the winding process respectively.

In the winding and spraying integrated device, the positive electrode spray head and the negative electrode spray head are respectively arranged corresponding to the positive foil and the negative foil and are respectively used for spraying the electrolyte to the positive foil and the negative foil, so that the first electrolytic paper and the second electrolytic paper are adhered to soak the electrolyte in the winding process.

According to the winding and spraying integrated device, the control module controls the spraying process of the anode spray head and the cathode spray head to be divided into an initial stage, a continuous stage and a final stage, and the spraying amount per unit time in the continuous stage is larger than the spraying amount per unit time in the initial stage and the final stage.

According to the winding and spraying integrated device, the spraying unit further comprises a first spray head and a second spray head which are respectively arranged corresponding to the first electrolytic paper and the second electrolytic paper and are in signal connection with the control module, and the first spray head and the second spray head are respectively used for spraying the electrolyte to the first electrolytic paper and the second electrolytic paper.

In the winding and spraying integrated device, the spraying amount of the first spray head and the second spray head per unit time is smaller than that of the anode spray head and that of the cathode spray head per unit time.

The invention has the beneficial effects that: by arranging the spraying unit to spray the electrolyte in the winding process, the first electrolytic paper and the second electrolytic paper can be simultaneously soaked in the electrolyte in the winding process, so that the impregnation process can be combined in the winding process, and the installation of the whole impregnation device is omitted, thereby greatly improving the manufacturing efficiency of the winding type capacitor and reducing the manufacturing cost.

Drawings

Other features and effects of the present invention will become apparent from the following detailed description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a wound capacitor;

FIG. 2 is a schematic view of one embodiment of the roll-to-roll spray integrated apparatus of the present invention; and

FIG. 3 is a flow chart of the winding and spraying integrated process of the present invention applied to the embodiment.

Detailed Description

Referring to fig. 1 and 2, an embodiment of the winding and spraying integrated device of the present invention is suitable for manufacturing a winding capacitor 9, and includes a feeding unit 2, a winding unit 3, and a spraying unit 4.

The conveying unit 2 includes four raw material conveying modules 21, each raw material conveying module 21 preferably has a raw material placing shaft 211 and at least one raw material rotating shaft 212, the raw material placing shaft 211 is respectively suitable for being provided with a positive foil 91, a first electrolytic paper 92, a negative foil 93 and a second electrolytic paper 94 to be arranged in a rolling manner, the raw material rotating shaft 212 is provided for being provided with the positive foil 91, the first electrolytic paper 92, the negative foil 93 and the second electrolytic paper 94 to provide proper tension during transportation, and the positive foil 91, the first electrolytic paper 92, the negative foil 93 and the second electrolytic paper 94 are sequentially stacked in layers to be output towards a winding axis 8. The arrangement of the raw material placing shaft 211 and the raw material rotating shaft 212 in fig. 2 is only an illustration, and the implementation manner thereof can vary according to actual requirements, but not limited thereto.

The conveying unit 2 preferably further comprises a tape conveying module 22, wherein the tape conveying module 22 has a tape placing shaft 221 adapted to place a tape 95 in a roll, and a tape rotating shaft 222 for outputting the tape 95 toward the winding shaft center 8. In the present embodiment, the wound end of the capacitor 9 is fixed by the adhesive tape 95 to fix the wound semi-finished product of the capacitor 9, but the capacitor 9 may be fixed by glue, so that the adhesive tape delivery module 22 is not required to be disposed, and a glue injection device (not shown) is used instead.

The number of the raw material rotating shafts 212 and the number of the tape rotating shafts 222 can be increased or decreased according to actual setting requirements, the number can be one or any number, and the numbers drawn in fig. 2 are only schematic and are not limited thereto.

The transfer unit 2 preferably also comprises a core transfer module 23 adapted to deliver a plurality of cores 96 in the direction of the winding axis 8.

The conveying unit 2 preferably further comprises two riveting modules 24, wherein the riveting modules 24 are respectively arranged on the conveying paths of the positive foil 91 and the negative foil 93, and are respectively adapted to rivet or weld a positive pole 97 and a negative pole 98 on the positive foil 91 and the negative foil 93. Thus, the nailing (tacking) process described in the background art can be incorporated into the winding/spraying integrated apparatus of the present embodiment.

Winding unit 3 includes an installation axle 31 that can wind self axis pivoted, installation axle 31 has a plurality of installation departments 32 that set up around self axis and be applicable to respectively supply roll core 96 can rotate and set up, and one of them installation department 32 can make the roll core 96 of its installation be located 8 positions of winding axle center, and make roll core 96's axle center the same as winding axle center 8, winding unit 3 can rotate installation department 32 and make the correspondence roll core 96 with winding axle center 8 winds as the axle center positive foil 91 first electrolytic paper 92 negative foil 93 with second electrolytic paper 94. Wherein the positive foil 91, the first electrolytic paper 92, the negative foil 93 and the second electrolytic paper 94 are stacked in this order from the winding core 96.

After the winding core 96 mounted on the mounting portion 32 at the winding axis 8 position is completed and the tape 95 is fixed, the mounting shaft 31 is rotated so that the winding core 96 of the next mounting portion 32 is positioned at the winding axis 8 position, and the next capacitor 9 is wound. The winding unit 3 shown in fig. 2 is only a schematic illustration of one of the structures, and since the structure is known in the art, the structure of the winding unit can be changed by one of ordinary skill in the art according to the actual needs, without being limited thereto.

The spraying unit 4 includes a positive nozzle 41 and a negative nozzle 42 for spraying the electrolyte, and a control module 43 connected to the positive nozzle 41 and the negative nozzle 42 in signal, wherein the positive nozzle 41 and the negative nozzle 42 respectively immerse the first electrolytic paper 92 and the second electrolytic paper 94 in the electrolyte during the winding process. Since the paper needs to maintain a certain tension during the transportation process, in order to avoid the first electrolytic paper 92 and the second electrolytic paper 94 from being broken during the transportation process due to the direct spraying of a sufficient amount of electrolyte onto the first electrolytic paper 92 and the second electrolytic paper 94, the positive electrode nozzle 41 and the negative electrode nozzle 42 are preferably disposed corresponding to the positive foil 91 and the negative foil 93, respectively, and are used for spraying the electrolyte onto the positive foil 91 and the negative foil 93, respectively, so that the first electrolytic paper 92 and the second electrolytic paper 94 are adhered to and soaked in the electrolyte during the winding process.

The spraying unit 4 preferably further includes a first spraying head 44 and a second spraying head 45 respectively corresponding to the first electrolytic paper 92 and the second electrolytic paper 94 and connected to the control module 43 by signals, the first spraying head 44 and the second spraying head 45 are respectively used for spraying the first electrolytic paper 92 and the second electrolytic paper 94 with the electrolyte, and the spraying amount of the first spraying head 44 and the second spraying head 45 per unit time is preferably smaller than that of the positive spraying head 41 and the negative spraying head 42 per unit time, for example, a small amount of spraying can be performed on the corner portions of the positive spraying head 41 and the negative spraying head 42 which are not sufficiently sprayed. Therefore, the wetting degree of the first electrolytic paper 92 and the second electrolytic paper 94 can be increased, so as to achieve better capacitance performance, and simultaneously avoid the problem that the first electrolytic paper 92 and the second electrolytic paper 94 are cracked during conveying due to too much electrolyte spraying. It should be noted that when the spraying amount of the positive nozzle 41 and the negative nozzle 42 can meet the wetting requirement of the first electrolytic paper 92 and the second electrolytic paper 94, the first nozzle 44 and the second nozzle 45 may not be added.

It should be noted that, in this embodiment, the capacitor 9 is configured by using two layers of electrolytic paper 92 and 94 and one layer of positive foil 91 and one layer of negative foil 93, and is mainly configured by matching one positive nozzle 41 and one negative nozzle 42, but when the capacitor 9 is configured by using four layers of electrolytic paper and two layers of positive foil and two layers of negative foil, or more than six layers of electrolytic paper and more than three layers of positive foil and more than three layers of negative foil, the spraying unit 4 may further include one or more than two auxiliary positive nozzles and auxiliary negative nozzles, and the number of the auxiliary positive nozzles and the auxiliary negative nozzles corresponds to that each layer of electrolytic paper can correspond to at least one nozzle.

The control module 43 preferably controls the spraying process of the anode nozzle 41 and the cathode nozzle 42 to be divided into an initial stage, a continuous stage and a final stage, and the spraying amount per unit time in the continuous stage is greater than the spraying amount per unit time in the initial stage and the final stage, that is, the spraying amount per unit time of the anode nozzle 41 and the cathode nozzle 42 is performed in a small, large and small order, for example, 4 seconds of winding time is used for illustration, a small amount is used for spraying in 0-1 second, a large amount is used for spraying in 1-3 seconds, and a small amount is used for spraying in 3-4 seconds, so that a good wetting effect can be maintained, and the electrolyte at the head and the tail end is prevented from overflowing due to excessive electrolyte.

The winding and spraying integrated device preferably further comprises a cutting device (not shown) for cutting the positive foil 91, the first electrolytic paper 92, the negative foil 93, the second electrolytic paper 94 and the adhesive tape 95, and preferably cutting the lengths of the first electrolytic paper 92 and the second electrolytic paper 94 to be longer than the lengths of the positive foil 91 and the negative foil 93, so as to obtain better isolation and coating effects. Since the detailed structure of the cutting device is well known in the art, it is not described herein.

Referring to fig. 1, 2 and 3, a winding and spraying integrated process used in the present embodiment includes the following steps:

step 51: the winding core 96, the positive foil 91, the first electrolytic paper 92, the negative foil 93, and the second electrolytic paper 94 are prepared, and the positive foil 91, the first electrolytic paper 92, the negative foil 93, and the second electrolytic paper 94 are sequentially stacked and wound around the winding core 96.

Step 52: preparing the anode nozzle 41 and the cathode nozzle 42, and spraying the electrolyte on the anode nozzle 41 and the cathode nozzle 42 to soak the electrolyte in the winding process of the first electrolytic paper 92 and the second electrolytic paper 94, respectively, in the winding process of step 51.

The positive nozzle 41 and the negative nozzle 42 respectively spray the electrolytes on the positive foil 91 and the negative foil 93, so that the first electrolytic paper 92 and the second electrolytic paper 94 are adhered to each other during the winding process to be soaked in the electrolytes.

The spraying process of the anode nozzle 41 and the cathode nozzle 42 is divided into the initial stage, the continuous stage and the final stage, and the spraying amount per unit time in the continuous stage is greater than the spraying amount per unit time in the initial stage and the final stage.

The first nozzle 44 and the second nozzle 45 are also prepared, and the first nozzle 44 and the second nozzle 45 respectively spray the electrolyte to the first electrolytic paper 92 and the second electrolytic paper 94 in the winding process of step 51.

The spraying amount of the first nozzle 44 and the second nozzle 45 per unit time is smaller than the spraying amount of the positive nozzle 41 and the negative nozzle 42 per unit time.

Step 53: after winding a predetermined length in step 51, the positive electrode nozzle 41 and the negative electrode nozzle 42 stop spraying, and the positive foil 91, the first electrolytic paper 92, the negative foil 93, and the second electrolytic paper 94 are cut and fixed at the winding end.

Wherein the predetermined length is determined according to the specification of the capacitor 9 to be manufactured.

Wherein the wound ends of the capacitor 9 are fixed using the tape 95 or glue, thereby completing the fabrication of the "element".

Through the above description, the efficacy of the present embodiment is described as follows:

first, by arranging the spraying unit 4 to spray the electrolyte in the winding process, the first electrolytic paper 92 and the second electrolytic paper 94 can be soaked with the electrolyte simultaneously in the winding process, so that the impregnation (impregnation) process can be combined in the winding process, and the electrolyte soaking effect required by the impregnation process can be achieved in the original execution time of the winding process, so that the execution time of the whole impregnation process can be saved, the manufacturing time of the wound capacitor 9 can be greatly shortened, the manufacturing efficiency of the wound capacitor 9 can be improved, and the consumption of a large amount of electrolyte can be saved by using the spraying method compared with the impregnation method, so that the production cost can be reduced, and the waste liquid pollution can be reduced.

Moreover, since the present embodiment can be modified by directly using the winding device used in the existing winding process, for example, the spraying unit 4 of the present embodiment can be installed on the existing 3000-type or 6000-type winding device, so that the electrolyte soaking effect required by the impregnation process can be integrated into the existing winding device, and thus, the whole impregnation device can be omitted from the system, and therefore, the space, cost and maintenance cost for installing the impregnation device can be saved, and the manufacturing cost of the wound capacitor 9 can be greatly reduced. The 3000 type and 6000 type are common models in this industry, and refer to that the largest capacitors can be manufactured with diameters of 30mm and 60mm, and if the product of the world macro machinery company is taken as an example, the corresponding product numbers are SPHT-3000 and SPHT-6000, respectively.

In the practical operation of the present embodiment, the sprayed electrolyte component can be adjusted according to the size of the applied capacitor 9, so that the wetting degree of the first electrolytic paper 92 and the second electrolytic paper 94 can be improved compared with the prior art after the optimization adjustment, and the yield of the capacitor can be greatly improved to more than 90%.

It should be noted that, in the electrical principle, the capacitor 9 can be used as a battery, and the current process of some batteries (such as lithium batteries) also includes the winding and impregnation processes, and the main difference is only that the electrolyte formula used by the capacitor 9 and the battery is different, so the winding and spraying integrated device and the winding and spraying integrated process of the present invention can also be applied to participate in the manufacture of a battery.

In summary, the winding and spraying integrated apparatus and the winding and spraying integrated process of the present invention can achieve the object of the present invention.

The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and the invention is still within the scope of the present invention by simple equivalent changes and modifications made according to the claims and the contents of the specification.