阅读说明：本技术 用于给构件涂层的涂层设备 (Coating device for coating a component ) 是由 J·哈肯贝格 M·林格纳 C·R·赫茨尔 F·米勒 L·鲍姆格特纳 T·贝格曼 M·布林 于 2020-03-18 设计创作，主要内容包括：本发明涉及一种用于给构件(2)涂层、尤其用于给火花塞壳体镀镍的涂层设备(1)。涂层设备包括：具有外阳极(4)的壳体(3),外阳极设置用于容纳构件(2)内阳极(5),其可以导入到构件(2)的通孔(21)中,和应力产生装置(6),其中应力产生装置(6)设置用于,在外阳极(4)和构件(2)之间产生第一应力,并且在内阳极(5)和构件(2)之间产生第二应力,并且其中壳体(3)具有入口(31)和出口(32),用于将处理介质导入(71)到壳体(3)中或将其从壳体导出(72)。(The invention relates to a coating device (1) for coating a component (2), in particular for nickel plating a spark plug housing. The coating apparatus includes: a housing (3) having an outer anode (4) which is provided for accommodating an inner anode (5) of the component (2) and which can be introduced into the through-opening (21) of the component (2), and a stress-generating device (6), wherein the stress-generating device (6) is provided for generating a first stress between the outer anode (4) and the component (2) and for generating a second stress between the inner anode (5) and the component (2), and wherein the housing (3) has an inlet (31) and an outlet (32) for introducing (71) a treatment medium into the housing (3) or for removing (72) it therefrom.)

1. Coating device for coating a component (2), in particular for nickel plating a spark plug housing, comprising:

-a housing (3) with an outer anode (4) arranged for accommodating the component (2),

-an internal anode (5) that can be introduced into the through-hole (21) of the component (2), and

-stress generating means (6),

-wherein the stress-creating means (6) are arranged for creating a first stress between the outer anode (4) and the component (2) and a second stress between the inner anode (5) and the component (2), and

-wherein the housing (3) has an inlet (31) for introducing (71) the treatment medium into the housing (3) and an outlet (32) for leading (72) the treatment medium out of the housing (3).

2. The coating apparatus according to claim 1, wherein the housing (3) further comprises a cover (8) with a clamping apparatus (81), wherein the clamping apparatus (81) is configured for clamping the component (2) for holding the component (2) in a predefined position within the outer anode (4).

3. The coating apparatus according to claim 2, wherein the component (2) is a spark plug housing with a ground electrode (22), and wherein the clamping apparatus (81) is provided for clamping the ground electrode (22).

4. The coating apparatus according to claim 3, wherein the clamping device (81) at least partially covers the surface of the ground electrode (22) in the clamped state, and wherein the clamping device (81) covers at least 80%, particularly preferably at least 95%, of the surface of the ground electrode (22), in particular in the clamped state.

5. The coating apparatus according to any one of the preceding claims, wherein the treatment medium is a nickel electrolyte.

6. Coating apparatus according to any one of the preceding claims, wherein the inner anode (5) is adjustable along the longitudinal axis (10) of the housing (3).

7. Coating apparatus according to one of the preceding claims, further comprising a flow regulating device (9) for regulating the flow of the treatment medium through the housing (3), wherein the flow regulating device (9) is an orifice plate, in particular a rotatable orifice plate.

8. The coating apparatus according to claim 7, wherein the flow regulating device (9) is provided for regulating a first flow between the inner anode (5) and the component (2) and/or a second flow between the outer anode (4) and the component (2), respectively, in particular independently of each other.

9. The coating facilities are arranged on the base plate,

-comprising at least one, in particular at least 20, preferably 48 coating apparatuses (1) according to any one of the preceding claims, and

-comprising at least one, in particular two, stress-generating means (6) for each coating apparatus (1).

Technical Field

The invention relates to a coating device for coating components, in particular for plating a spark plug housing with nickel. The invention further relates to a coating installation.

Background

The coating of components, such as spark plug housings, by means of a roller coating is known. The components are introduced into the drum as a bulk product, wherein the components located in the drum are subsequently subjected to all coating steps as a bulk product.

Disclosure of Invention

In contrast, the coating installation according to the invention with the features of claim 1 offers the advantage of an improved installation with which it is possible to produce a coating of a component that is of very high value in terms of quality in a short time. According to the invention, this is achieved by a coating apparatus comprising a housing with an outer anode, an inner anode and a stress-generating device. The outer anode is thus part of the housing and is provided for accommodating a component, preferably a spark plug housing, i.e. a surrounding component. The inner anode may be introduced into the through-hole of the member. Furthermore, the stress generating means are provided for generating a first stress between the outer anode and the component and a second stress between the inner anode and the component. The housing furthermore has an inlet and an outlet. The treatment medium can be introduced into the housing through the inlet and can in turn be discharged from the housing through the outlet.

The coating device is therefore designed such that it can accommodate exactly one component each, wherein both the outer side and the inner side of the component can be coated completely and with high quality, advantageously with nickel plating. By directly flowing around the component by means of the treatment medium, a very high coating speed, i.e. a very rapid deposition of the layer on the component, can be achieved in this case.

The dependent claims have advantageous developments in their content.

Preferably, the housing furthermore comprises a cover with a clamping device. The clamping device is designed to clamp the component in order to thereby hold the component in a predefined position within the outer anode. That is to say, the component is held in the housing definitively only by the clamping device.

Particularly preferably, the component is a spark plug housing with a ground electrode. The clamping device is provided here for clamping the ground electrode. This results in a particularly simple possibility for clamping the spark plug housing in the outer anode.

Preferably, the clamping device is configured such that it at least partially covers the surface of the ground electrode in the clamped state. In particular, the clamping device covers at least 80%, particularly preferably at least 95%, of the surface of the ground electrode in the clamped state. In other words, the clamping device surrounds the ground electrode of the spark plug housing, so that a defined clamping of the spark plug housing in the outer anode is thereby enabled on the one hand, and on the other hand, the surface of the ground electrode is covered as far as possible. It is thereby prevented that the ground electrode can come into contact with the treatment medium during the coating process and is therefore not coated. This is particularly advantageous when only partial coating of the spark plug housing is considered.

It is also advantageous if the treatment medium is a nickel electrolyte. The coating thus corresponds to the nickel plating of the component, that is to say a nickel coating is produced on the component.

Preferably, the inner anode is adjustable along the longitudinal axis of the housing in order to adapt the production of the coating on the inner side of the component. For example, different layer thicknesses of the coating can thereby be achieved on the inner side of the component.

Preferably, the coating apparatus further comprises a flow regulating device for regulating the flow of the treatment medium through the housing. The flow regulating device is an orifice plate, which is preferably rotatable. For example, such a rotatable perforated plate can be provided as two disks which are rotatable relative to one another and have a plurality of through-openings. By rotating the two disks relative to each other, the covering of the through-opening is changed, whereby the entire free flow cross section and thus the flow through the housing can be adjusted.

Particularly preferably, a first flow rate between the inner anode and the component and/or a second flow rate between the outer anode and the component can be set by means of the flow rate setting device. It is particularly advantageous here that the first flow rate and the second flow rate can be set independently of one another by means of the flow rate setting device, so that the flow rate of the treatment medium through the housing can be adapted particularly flexibly to the desired properties of the coating inside and outside the component.

Furthermore, the invention relates to a coating installation comprising at least one, preferably, however, at least 20, and particularly preferably 48 coating devices. Furthermore, the coating installation comprises at least one, preferably exactly two, stress generating devices per coating installation. As a result, a particularly effective and rapid coating of the components can be achieved in the entire installation.

Drawings

The invention is described below with the aid of embodiments in conjunction with the accompanying drawings. In the figures, functionally identical components are denoted by the same reference numerals, respectively. Here:

fig. 1 shows a simplified schematic cross-sectional view of a coating apparatus according to a preferred embodiment of the invention.

Detailed Description

Fig. 1 shows a simplified schematic cross-sectional view of a coating apparatus 1 according to a preferred embodiment of the invention. The operating state of the coating installation 1 during the coating of a component 2 arranged in the coating installation 1 is shown here. The member 2 is a spark plug shell having a straight ground electrode 22.

The coating apparatus 1 comprises a housing 3 with an outer anode 4. The housing 3 extends substantially along a longitudinal axis 10. Within the outer anode 4 a member 2 is arranged. The outer anode 4 has an inner contour which is adapted to the outer contour of the component 2.

An inner anode 5 of the coating device 1 is arranged in the through-hole 21 of the component 2. The inner anode 5 is fixed to the bottom 35 of the housing 3 by means of screws 51. The adjustment of the inner anode 5 along the longitudinal axis 10 can be performed by means of screws 51.

Furthermore, the housing 3 comprises a cover 8 with a clamping device 81. The ground electrode 22 of the component 2 is clamped in the clamping device 81 in order to thus hold the component 2 in a defined position within the outer anode 4. The ground electrode 22 is shown here in fig. 1 in a state not yet bent and therefore likewise extends in the direction of the longitudinal axis 10. As can also be seen in fig. 1, by clamping the ground electrode 22 in the clamping device 81, more than 90% of the surface of the ground electrode 22 is covered by the clamping device 81 in order to prevent coating of the ground electrode 22 just above this covered surface.

Furthermore, the housing 3 has an inlet 31 at the bottom 35, through which a treatment medium can be introduced into the housing 3 in the direction 71. Furthermore, an outlet 32 is provided in the housing 3, through which the treatment medium can be again discharged from the housing 3 in the direction 72 after the treatment medium has overflowed or flowed through the component 2.

The coating apparatus 1 furthermore comprises a flow regulating device 9 which is arranged at the transition between the bottom 35 and the outer anode 4. The flow rate regulating device 9 is designed as an orifice plate with a plurality of orifices 91 in order to regulate the flow rate, in particular the volume flow rate, of the treatment medium through the housing 3 by rotation.

The treatment medium is a nickel electrolyte here, with the result that a nickel coating can be produced on the component 2 by means of the nickel electrolyte.

In order to produce such a nickel coating on the component 2, the coating installation 1 furthermore comprises a stress-generating device 6. By means of the stress-generating means 6, a first stress can be generated between the outer anode 4 and the component 2. Furthermore, a second stress may also be generated between the inner anode 5 and the member 2. Thus, during the flow-through of the housing 3 by the treatment medium, it is possible to produce a nickel coating not only on the inside but also on the outside of the component 2 by providing the first stress and the second stress.