阅读说明：本技术 一种纽扣电池负极盖的模具以及电镀方法 (Mold and electroplating method for button battery negative electrode cover ) 是由 吴增贵 于 2021-08-16 设计创作，主要内容包括：本发明属于纽扣电池生产装置技术领域,尤其是一种纽扣电池负极盖的模具以及电镀方法,包括电磁板,所述电磁板的一侧固定有镀膜机构,所述镀膜机构包括与电磁板固定的硅胶模具,所述硅胶模具远离电磁板的一侧开设有沿其长度方向等距分布的放置孔；本发明能够对负极盖进行选择性挂镀,并且方便电镀之后对负极盖进行脱模,降低了工作人员的劳动强度,提高了工作效率。(The invention belongs to the technical field of button battery production devices, and particularly relates to a mold and an electroplating method for a button battery negative electrode cover, wherein the mold comprises an electromagnetic plate, a coating mechanism is fixed on one side of the electromagnetic plate, the coating mechanism comprises a silica gel mold fixed with the electromagnetic plate, and placing holes which are distributed at equal intervals along the length direction of the silica gel mold are formed in one side of the silica gel mold, which is far away from the electromagnetic plate; the invention can selectively plate the cathode cover, is convenient for demoulding the cathode cover after electroplating, reduces the labor intensity of workers and improves the working efficiency.)

1. The utility model provides a die set of button cell negative pole lid, includes electromagnetic plate (1), its characterized in that, one side of electromagnetic plate (1) is fixed with coating mechanism (2), coating mechanism (2) include with electromagnetic plate (1) fixed silica gel mould (4), silica gel mould (4) are kept away from one side of electromagnetic plate (1) and are seted up along its length direction equidistance distribution place hole (3).

2. The mold device for the negative cover of the button cell according to claim 1, wherein the silicone mold (4) is conductive silicone.

3. The electroplating method of the button battery negative cover is characterized by comprising the following steps:

s1: adopting the mold device of the button battery negative cover as defined in any one of claims 1-2 to manufacture a molded negative cover;

s2: and electroplating the formed negative cover to obtain the button battery negative cover.

4. The electroplating method of the button cell negative electrode cover according to claim 3, wherein the electroplating solution used in the S2 electroplating process comprises: 25-30 g/L cuprous cyanide, 45-50 g/L sodium stannate, 10-15 g/L sodium cyanide, 50-80 g/L composite complexing agent and 2ml/L surfactant.

5. The electroplating method of the button battery negative electrode cover according to claim 3, wherein in the electroplating process of S2, the electroplating conditions are as follows: the temperature is 45-50 ℃, and the cathode material is as follows: graphite and cathode current density are 2-3A/d square meter.

Technical Field

The invention relates to the technical field of button battery production devices, in particular to a mold and an electroplating method for a button battery negative electrode cover.

Background

A button cell is also called a button cell, and refers to a cell with a shape and size like a small button. Button cells are widely used in various miniature electronic products due to their small size, and are commonly used as backup power sources for various electronic products, which is one of the most important elements in electronic devices. Therefore, the performance of the button cell often directly affects the working state of the electronic product. Particularly, when the button cell fixing structure is applied to power supply of terminal equipment such as clocks, vernier calipers and intelligent bracelets, a button cell fixing structure is required to fix a negative electrode cover or a positive electrode cover of the terminal equipment, so that the button cell is fixed on the terminal equipment; in the production process of the button battery, when the negative electrode cover is electroplated, the barrel plating equipment is often adopted, the barrel plating equipment cannot perform selective rack plating on the negative electrode cover, and the outer side wall of the negative electrode cover is easy to oxidize after being plated and is not attractive, so that the mold and the electroplating method of the negative electrode cover of the button battery, which can perform selective rack plating on the negative electrode cover, are needed.

Disclosure of Invention

The invention provides a mold and an electroplating method for a button battery negative electrode cover, which solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a die set of button cell negative pole lid, includes the electromagnetic plate, one side of electromagnetic plate is fixed with coating mechanism, coating mechanism includes the silica gel mould fixed with the electromagnetic plate, the hole of placing of following its length direction equidistance and distributing is seted up to one side that the electromagnetic plate was kept away from to the silica gel mould.

Preferably, the silica gel mold is conductive silica gel.

An electroplating method of a button battery negative cover comprises the following steps:

s1: manufacturing a molded negative cover by adopting a mold device of the button battery negative cover;

s2: and electroplating the formed negative cover to obtain the button battery negative cover.

Preferably, the electroplating solution used in the electroplating process of S2 comprises: 25-30 g/L cuprous cyanide, 45-50 g/L sodium stannate, 10-15 g/L sodium cyanide, 50-80 g/L composite complexing agent and 2ml/L surfactant.

Preferably, in the electroplating process of S2, the electroplating conditions are as follows: the temperature is 45-50 ℃, and the cathode material is as follows: graphite and cathode current density are 2-3A/d square meter.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the cathode cover is selectively hung and plated through the electromagnetic plate, the silica gel mold and the placing hole, and the cathode cover is wrapped through the silica gel mold, so that the outer side wall of the cathode cover cannot be contacted with electroplating liquid medicine, only the inner side wall of the cathode cover can be contacted with the electroplating liquid medicine, and only the inner side wall of the cathode cover is electroplated, thereby reducing the labor intensity of workers; meanwhile, the cathode cover is electroplated by the electrolyte solution containing the components such as cuprous cyanide, sodium stannate, sodium cyanide, a composite complexing agent, a surfactant and the like, so that the cathode cover can be ensured, the electroplating effect of the cathode cover can be ensured, and the cathode cover can not change color or fade for a long time.

Drawings

Fig. 1 is a schematic structural diagram of a mold device for a button battery negative cover according to the present invention.

Reference numbers in the figures: 1. an electromagnetic plate; 2. a film coating mechanism; 3. placing holes; 4. and (5) a silica gel mold.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1, a mold device for a button battery cathode cover comprises an electromagnetic plate 1, wherein a coating mechanism 2 is fixed on one side of the electromagnetic plate 1, the coating mechanism 2 comprises a silica gel mold 4 fixed with the electromagnetic plate 1, and placing holes 3 are formed in one side, away from the electromagnetic plate 1, of the silica gel mold 4 and are distributed at equal intervals along the length direction of the silica gel mold; when the cathode cover is electroplated, the cathode cover is firstly placed inside the placing hole 3, then the silica gel mold 4 is placed in electroplating liquid medicine, then the electromagnetic plate 1 is electrified, so that the silica gel mold 4 is conductive, the cathode cover can be firmly fixed inside the placing hole 3, the cathode cover is prevented from being separated from the placing hole during electroplating, the cathode cover is electroplated, the electromagnetic plate 1 can be rotated according to conditions, the inner side wall of the cathode cover can be fully contacted with the electroplating liquid medicine, the inner side wall of each cathode cover can be completely plated with copper-tin alloy, the electromagnetic plate 1 is taken out from the electroplating liquid medicine after electroplating is finished, then the electromagnetic plate 1 is powered off, the cathode cover can be directly separated from the placing hole 3, the demolding of the cathode cover after electroplating is convenient, and the labor intensity of workers is reduced, the working efficiency is improved.

Further, the silica gel mold 4 is conductive silica gel; the outer side wall of the negative electrode cover can be wrapped and protected when the negative electrode cover is electroplated, and the negative electrode cover can conduct electricity.

An electroplating method of a button battery negative cover comprises the following steps:

s1: manufacturing a molded negative cover by adopting a mold device of the button battery negative cover;

the electroplating solution used in the S2 electroplating process comprises the following steps: 25-30 g/L of cuprous cyanide, 45-50 g/L of sodium stannate, 10-15 g/L of sodium cyanide, 50-80 g/L of composite complexing agent and 2ml/L of surfactant;

in the S2 electroplating process, the electroplating conditions are as follows: the temperature is 45-50 ℃, and the cathode material is as follows: graphite and cathode current density are 2-3A/d of square meter;

the first embodiment is as follows: the composite complexing agent comprises the following components: cyanide, hydroxide, citrate, pyrophosphate, thiosulfate, sulfite.

Example two: the components of the surfactant comprise: stearic acid, sodium dodecylbenzenesulfonate and quaternaries.

The working principle is as follows: when the cathode cover is electroplated, the cathode cover is firstly placed inside the placing hole 3, then the silica gel mold 4 is placed in electroplating liquid medicine, then the electromagnetic plate 1 is electrified, so that the silica gel mold 4 is conductive, the cathode cover can be firmly fixed inside the placing hole 3, the cathode cover is prevented from being separated from the placing hole during electroplating, the cathode cover is electroplated, the electromagnetic plate 1 can be rotated according to conditions, the inner side wall of the cathode cover can be fully contacted with the electroplating liquid medicine, the inner side wall of each cathode cover can be completely plated with copper-tin alloy, the electromagnetic plate 1 is taken out from the electroplating liquid medicine after electroplating is finished, then the electromagnetic plate 1 is powered off, the cathode cover can be directly separated from the placing hole 3, the demolding of the cathode cover after electroplating is convenient, and the labor intensity of workers is reduced, the working efficiency is improved; and can ensure that the cathode cover does not fade or discolor after long-term use.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.