CN109423684B

CN109423684B - Coating device for container and coating method using same

Info

Publication number: CN109423684B
Application number: CN201810091949.5A
Authority: CN
Inventors: 姚谷; 刘少均; 李柘林
Original assignee: China International Marine Containers Group Co Ltd; Guangdong Xinhui CIMC Special Transportation Equipment Co Ltd
Current assignee: China International Marine Containers Group Co Ltd; Guangdong Xinhui CIMC Special Transportation Equipment Co Ltd
Priority date: 2017-08-30
Filing date: 2018-01-30
Publication date: 2024-03-19
Anticipated expiration: 2038-01-30
Also published as: CN109423683A; CN109423684A; CN109423682A; CN208815149U; CN109423683B; CN207891440U; CN109423685B; CN109420654A; CN109423685A

Abstract

The invention provides a coating device for a container and a coating method using the same. The electrophoresis tank is used for containing electrophoresis paint; the electrode is used for electrifying the electrophoretic paint so as to coat the container immersed in the electrophoretic paint; the telescopic mechanism is used for conveying the electrode into the container, the telescopic mechanism is arranged in the electrophoresis tank, the electrode is arranged on the telescopic mechanism, and the telescopic mechanism is configured to be telescopic at least along a first direction so that the electrode can enter the container from the outside of the container. According to the scheme, the electrode can rapidly enter the container from the outside of the container, so that the electric field intensity in the container can meet the electrophoretic coating of the inner surface of the container, the coating efficiency and the coating quality of the container are improved, and the production requirement of the container on high efficiency is met.

Description

Coating device for container and coating method using same

Technical Field

The present invention relates to the technical field of containers, and more particularly, to a coating device for a container and a coating method using the same.

Background

At present, small workpieces such as household appliances and accessories thereof, cars and accessories thereof are subjected to electrophoretic coating, and electrodes are usually arranged on both sides of an electrophoretic cell. Because the volume of the workpiece is small, the electric field generated by the electrode can bypass the outer surface of the workpiece and enter the interior of the workpiece, and the arrangement of the electrode does not influence the quality requirement of the electrophoretic coating of the workpiece, so that the electrophoretic coating of the small-sized workpiece can be realized.

While the large-sized workpiece such as the body of a bus, a truck or a frame car is subjected to electrophoretic coating, the size of the workpiece is large, and the periphery of the workpiece is provided with holes for mounting windows and the like, so that an electric field generated by the electrode can bypass the outer surface of the workpiece through the holes to enter the interior of the workpiece, and the large-sized workpiece can be subjected to electrophoretic coating.

However, since the large-sized work piece has a large volume and the electric field intensity decays with increasing distance, the electrophoresis time of the large-sized work piece increases, and the uniformity of the film thickness of the inner surface and the outer surface of the work piece is poor by 5 μm to 10 μm, which affects the coating efficiency. Therefore, it is often necessary to arrange electrodes inside a large workpiece.

For a container among large-sized workpieces, there is a gap between bottom beams of a bottom frame of the container formed in a steel structure, through which an electrode can enter the inside of the container through a door end (a door is in an opened state). However, if the electrodes are disposed in such a manner as to enter from the gaps between the bottom beams, the distances between the bottom beams are different due to the different sizes of the containers, so that the positions of the electrodes disposed in the electrophoresis tank need to be changed according to the sizes of the containers. Thus, the same electrophoresis tank and the electrodes arranged in the same electrophoresis tank cannot be applied to the container transfer.

Furthermore, if the electrodes are accessed from the door end, it is contemplated that the length of the container is generally long, and that existing electrodes are typically accessed individually or integrally. Because the two entering modes are short-stroke modes, the arrangement requirements of the electrodes of the container cannot be met.

Accordingly, there is a need for a coating apparatus for a container and a coating method using the same to at least partially solve the problems of the prior art.

Disclosure of Invention

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

In order to at least partially solve the above-mentioned problems, according to one aspect of the present invention, there is provided a painting device for a container, the painting device comprising an electrophoresis tank, an electrode, and a telescopic mechanism.

The electrophoresis tank is used for containing electrophoresis paint;

the electrode is used for electrifying the electrophoretic paint so as to paint the container immersed in the electrophoretic paint;

The telescopic mechanism is used for conveying the electrodes into the container, the telescopic mechanism is arranged in the electrophoresis tank,

wherein the electrode is disposed on the telescoping mechanism and the telescoping mechanism is configured to be telescoping in at least a first direction such that the electrode is accessible from outside the container into the container.

According to the scheme, the electrode can rapidly enter the container from the outside of the container, so that the electric field intensity in the container can meet the electrophoretic coating of the inner surface of the container, the coating efficiency and the coating quality of the container are improved, and the production requirement of the container on high efficiency is met.

And the electrode sets up on telescopic machanism, and telescopic machanism can be flexible along the first direction for the electrode can change for the position of container, thereby makes this coating device can be used for the not unidimensional container, is applicable to the condition that the container changes production.

Preferably, the telescopic mechanism is configured so as to be located outside the container in a contracted state and at least partially within the container in an extended state.

Preferably, in the extended state, the electrodes are arranged at intervals along at least one of the first direction, a height direction, and a second direction perpendicular to the first direction and the height direction.

Preferably, the electrodes include side plate electrodes extending in the height direction, the side plate electrodes being arranged at intervals in the first direction,

wherein in the extended state the side panel electrode is adjacent to a side panel of the container in the second direction; and/or

In the extended state the side panel electrode is located in the first direction in the region of the weld seam of the side panel of the container.

Preferably, the electrodes comprise at least two sets of the side plate electrodes arranged at intervals along the second direction, one set of the at least two sets of side plate electrodes being adjacent one side plate of the container in the extended state and the other set of the at least two sets of side plate electrodes being adjacent the other side plate of the container.

Preferably, the electrodes include top plate electrodes extending in the second direction, the top plate electrodes being arranged at intervals in the first direction,

wherein the top plate electrode is close to the top plate in the height direction in the extended state; and/or

In the extended state the roof electrode is located in the first direction in the region of the weld seam of the roof of the container.

Preferably, the electrodes comprise front wall panel electrodes extending in the height direction, the front wall panel electrodes being adjacent to the front wall panel of the container in the extended state.

Preferably, the electrodes comprise gooseneck electrodes extending in the first or second direction, the gooseneck electrodes being adjacent to a gooseneck of the container in the extended condition.

Preferably, the telescopic mechanism is configured such that the time required to switch between the contracted state and the extended state does not exceed 60 seconds.

Preferably, the telescopic mechanism comprises a telescopic bracket configured as a link structure, and the electrode is arranged on the telescopic bracket.

Preferably, the telescopic support is configured to be at least partially hollow such that the weight of the telescopic support and the electrode is substantially equal to the buoyancy of the telescopic support and the electrode in the electrophoretic paint, such that the electrode does not contact the container.

Preferably, the telescopic mechanism further comprises a guide member provided on the telescopic bracket so as to keep the telescopic bracket stable during the telescopic process and in the extended state.

Preferably, the guide part is an elastic member, both ends of the guide part are connected to both ends of the telescopic bracket, respectively, and the guide part is in a tensioned state.

Preferably, the telescopic bracket comprises:

cross links that are disposed overlapping in the first direction and are arranged in a row in a second direction perpendicular to the first direction and the height direction; and

and the connecting shafts extend along the second direction, and the corresponding cross connecting rods are pivotally connected with the connecting shafts.

Preferably, the cross-links are connected to the connecting shaft by bearings made of a wear-resistant and corrosion-resistant plastic material.

Preferably, the cross links and the connecting shaft are made of hollow members.

Preferably, the telescopic support is made of an insulating material or is provided with an insulating coating.

Preferably, the telescopic mechanism further comprises a fixing seat fixedly connected with the electrophoresis tank, one end of the telescopic bracket is connected with the fixing seat, and the other end opposite to the one end is extensible.

Preferably, the telescopic mechanism further comprises a driving component for providing driving force for the telescopic bracket, and the driving component is arranged at the fixing seat.

Preferably, the driving member is provided with a protective sheath for preventing the entry of the electrophoretic paint.

Preferably, the painting device is used for a 20-gauge container, and the telescopic mechanism is configured so that the telescopic distance in the container is not less than 4 meters; or alternatively

The coating device is used for a 40-ruler container, and the telescopic mechanism is configured to have a telescopic distance within the container of not less than 10 meters.

Preferably, the electrode is an anode electrode; and/or

The coating apparatus further includes an anode cap.

Preferably, the painting device is configured such that the electrode is accessible from a door end of the container into the container.

According to another aspect of the present invention, there is provided a coating method using the coating apparatus according to any one of the above-described aspects, the coating method comprising the steps of:

an electrode arrangement step, wherein the telescopic mechanism conveys the electrodes from the outside of the container into the container along a first direction of the container;

an electrophoretic coating step, which is used for carrying out electrophoretic coating on the container; and

and an electrode resetting step, wherein the electrophoretic coating is stopped, and the telescopic mechanism returns to the original position.

According to the scheme, before the electrophoretic coating, the electrode can rapidly enter the container from the outside of the container through the telescopic mechanism, so that the electric field intensity in the container can meet the electrophoretic coating of the inner surface of the container. After the electrocoating, the electrode can again be quickly withdrawn from the container by the telescoping mechanism. Therefore, the coating efficiency and the coating quality of the container are improved, and the high-efficiency production requirement of the container is met.

Preferably, the painting method further includes a container pre-positioning step, before the electrode arrangement step, in which the container is immersed in the electrophoretic paint, and the container is disposed in a horizontal direction.

Preferably, the painting method further includes a container removing step after the electrode resetting step, in which the container after the electrophoretic painting is removed from the electrophoretic bath.

Preferably, in the electrode arrangement step and the electrode resetting step, the electrode is conveyed for a time of not more than 60 seconds and is retreated for a time of not more than 60 seconds.

Preferably, in the electrode arranging step, the container is a 20-gauge container, and the maximum conveying distance of the electrodes in the container is not less than 4 meters; or alternatively

The container is a 40-ruler container, and the maximum conveying distance of the electrode in the container is not less than 10 meters.

Drawings

The following drawings are included to provide an understanding of the invention and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and their description to explain the principles and apparatus of the invention. In the drawings of which there are shown,

fig. 1 is a schematic perspective view of a painting apparatus for a container and a container according to a preferred embodiment of the present invention, in which a telescopic mechanism is in a contracted state;

FIG. 2 is a schematic side view of the telescoping mechanism and container shown in FIG. 1, with the telescoping mechanism in a collapsed state;

FIG. 3 is a side view schematic illustration of the telescoping mechanism and container shown in FIG. 1, with the telescoping mechanism in an extended state;

FIG. 4 is a schematic perspective view of the telescoping mechanism shown in FIG. 1, wherein the telescoping mechanism is in a contracted state;

FIG. 5 is a schematic perspective view of the telescoping mechanism shown in FIG. 1, wherein the telescoping mechanism is in an extended state; and

fig. 6 is an enlarged partial schematic view of the portion a in fig. 5.

Description of the reference numerals

100: container 110: door end

120: door 130: side plate

140: top plate 150: front wall board

160: gooseneck groove

210: electrophoresis tank 220: electrode

221: side plate electrode 222: top plate electrode

223: front wall panel electrode 224: gooseneck groove electrode

230: telescoping mechanism 231: telescopic bracket

232: cross link 233: connecting shaft

233a: fixed connection shaft 233b: driving connecting shaft

234: electrode holder 235: electrode guide seat

240: guide member 250: fixing seat

251: perforating the hole

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.

In the following description, a detailed structure will be presented for the purpose of thoroughly understanding the present invention. It will be apparent that the invention is not limited to the specific details set forth in the skilled artisan. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments in addition to these detailed descriptions, and should not be construed as limited to the embodiments set forth herein.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, as the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The terms "upper", "lower", "front", "rear", "left", "right" and the like are used herein for illustrative purposes only and are not limiting.

Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meaning, such as a particular order or the like. Also, for example, the term "first component" does not itself connote the presence of "second component" and the term "second component" does not itself connote the presence of "first component".

Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, which illustrate representative embodiments of the invention and do not limit the invention.

As shown in fig. 1 and 2, the present invention provides a painting apparatus for a container 100, which includes an electrophoretic bath 210 for containing an electrophoretic paint, an electrode 220 for energizing the electrophoretic paint, and a telescopic mechanism 230 for conveying the electrode 220 into the container 100. The telescopic mechanism 230 is disposed in the electrophoresis tank 210, the electrode 220 is disposed on the telescopic mechanism 230, and the telescopic mechanism 230 is configured to be telescopic at least in the first direction D1 so that the electrode can be introduced into the container 100 from the outside thereof. In the illustrated embodiment, the telescoping mechanism 230 is capable of telescoping in a first direction D1. The electrode 220 is capable of entering the container 100 from the door end 110 of the container 100 with the door 120 in an open state. In an embodiment not shown, for example, for an open top container, the electrodes can enter the container from the top of the container in a state in which the top opening thereof is directed toward the telescopic mechanism.

The electrode 220 is transported into the container 100 by the telescoping mechanism 230. It will be appreciated that the electrodes 220 in the energized state are capable of generating an electric field to paint the container 100. The electric field strength in the container 100 of the preferred embodiment is large, and the electrophoretic paint coating can be rapidly formed on the inner surface of the container 100.

The electrode 220 may be understood as an internal electrode of the container 100 (an electrode located inside the container 100). To achieve electrocoating of the container 100, the exterior of the container 100 is typically provided with external electrodes. Under the combined action of the internal and external electrodes, the electrophoretic paint coating can be rapidly formed on the inner and outer surfaces of the container 100 at the same time. Reference herein to the "inner surface of the container 100" refers to the inner surface of the container 100 formed as a steel structure including side panels, roof panels, front wall panels, and bottom frames. Reference herein to the "outer surface of the container 100" refers to the outer surface of the container 100 formed as a steel structure including side panels, top panels, front wall panels, and bottom panels. References herein to "on the interior surface" are to be understood as meaning that the e-coat paint coating is a coating that is directly attached to the interior surface, as well as other coatings that are present between the interior surface and the e-coat paint coating.

The telescopic mechanism 230 is capable of being switched between a contracted state as shown in fig. 1 and 2 and an extended state as shown in fig. 3. As shown in fig. 1 and 2, the telescoping mechanism 230 is positioned outside the container 100 in a collapsed condition, and the telescoping mechanism 230 is shown positioned outside the door end 110 of the container 100 in a collapsed condition. As shown in fig. 3, the telescoping mechanism 230 is at least partially within the container 100 in an extended state. In particular, reference to an "extended state" in the body refers to a state in which the telescopic mechanism extends at least partially into the container.

Although the liquid level of the electrophoretic paint is not shown in the illustrated embodiment, it should be noted that the container 100 and telescoping mechanism 230 can be positioned below the liquid level of the electrophoretic paint before the electrodes 220 enter the container 100. In other words, the transfer process of the internal electrode may be a process performed in a state where the container 100 is immersed in the electrophoretic paint.

The telescoping mechanism 230 preferably telescopes linearly in the first direction D1, which allows for a shorter time period for the telescoping process, thereby saving time for the electrodes 220 to enter and exit the container 100. The telescopic mechanism 230 is structured to satisfy the correspondence of the electrodes 220 to the container 100, which will be described in detail later.

In the extended state, the electrodes 220 are arranged at intervals in at least one of the first direction D1, the second direction D2, and the height direction D3. It is understood that the electrode 220 includes a plurality. The plurality of electrodes 220 are arranged at intervals such that the inner surface of the container is within the area covered by the electric field generated by the electrodes. In the illustrated embodiment, the plurality of electrodes 220 can be arranged at intervals in each of the first direction D1, the second direction D2, and the height direction D3. In an embodiment not shown, the plurality of electrodes may also be arranged at intervals in the first direction only. Or a plurality of electrodes may be arranged at intervals in the first direction and the second direction. Still further, or a plurality of electrodes may be arranged at intervals in the first direction and the height direction.

The first direction D1, the second direction D2, and the height direction D3 are perpendicular to each other. The "first direction D1" referred to herein is the longitudinal direction of the telescopic mechanism. The "second direction D2" is the width direction of the telescopic mechanism. The "height direction D3" is the height direction of the telescopic mechanism. Further, in order to realize the technical solution defined below, for the case where the container is disposed in the horizontal direction, the first direction and the second direction are disposed in the horizontal direction, and "the first direction D1" may be understood as a direction substantially parallel to the length direction of the container 100. The "second direction D2" may be understood as a direction substantially parallel to the width direction of the container 100. The "height direction D3" may be understood as a direction substantially parallel to the height direction of the container 100.

It is considered that the container 100, which is generally formed in a steel structure, is of a semi-closed structure. For example, when the container is a common container, the semi-enclosed structure formed by the two side plates 130, the top plate 140 and the front wall plate 150 can interfere with the electric field and form a certain shielding to the electric field, so that the two side plates 130, the top plate 140 and the front wall plate 150 in the semi-enclosed area formed by the semi-enclosed structure cannot be well subjected to electrophoretic coating. Thus, the electrode 220 of the present embodiment is preferably disposed within the semi-enclosed region.

And it is preferable that the electric field strength at the weld is strong with respect to the electric field strength of the other parts of the container 100, considering that the surface of the weld is not easily coated with the electrophoretic paint with respect to the surfaces of the other parts of the container 100. Further, in the extended state, the electrode 220 can be located in the region of the weld of the container 100. It should be noted that the "region where the weld is located" is understood to mean that the weld can be located within an electric field region generated by the electrode 220 in the energized state.

Specifically, as shown in fig. 4 and 5, the electrode 220 includes a side plate electrode 221 for generating an electric field mainly at the side plate 130. The side plate electrode 221 extends in the height direction D3, and in the extended state the side plate electrode 221 can be closer to the side plate 130 in the second direction D2. In other words, in the extended state, the side plate electrode 221 is substantially parallel to the side plate 130 and is relatively close to the side plate electrode. Since the side panels 130 are typically splice welded from a plurality of single panels, such as corrugated panels. Therefore, it is preferable that the side plate electrodes 221 are arranged at intervals along the first direction D1. In this way, in the extended state, the side plate electrode 221 can be located in the region of the weld seam of the side plate 130 of the container 100 in the first direction D1.

The side plate electrodes 221 are arranged at intervals in the second direction D2 with at least two groups. In the extended state, one set of at least two sets of side plate electrodes 221 is adjacent to one side plate 130 of the container 100 and the other set of at least two sets of side plate electrodes 221 is adjacent to the other side plate 130 of the container 100. Each set of side plate electrodes 221 includes at least one row of side plate electrodes 221. Each row of side plate electrodes 221 is arranged at intervals along the first direction D1.

As shown in fig. 5, in the illustrated embodiment, the side plate electrodes 221 include a first set of side plate electrodes 221a and a second set of side plate electrodes 221b. The first set of side plate electrodes 221a includes a row of side plate electrodes 221. In the extended state, the first set of side plate electrodes 221a can be adjacent to the left side plate. The second set of side plate electrodes 221b includes a row of side plate electrodes 221. In the extended state, the second set of side plate electrodes 221b can be adjacent to the right side plate. In an embodiment not shown, the first set of side plate electrodes may comprise two rows of side plate electrodes. The two rows of side plate electrodes are arranged at intervals along the second direction. The second set of side plate electrodes may comprise two rows of side plate electrodes. The two rows of side plate electrodes are arranged at intervals along the second direction.

Further, the electrode 220 also includes a top plate electrode 222 for generating an electric field primarily at the top plate 140. The top plate electrode 222 extends in the second direction D2, and in the extended state the top plate electrode 222 can be closer to the top plate 140 of the container 100 in the height direction D3. In other words, in the extended state, the top plate electrode 222 is substantially parallel to the top plate 140 and is relatively close to the top plate electrode. In the illustrated embodiment, the top plate electrodes 222 are shown to be formed in one row in the first direction D1, but in an embodiment not shown, the top plate electrodes may be arranged in two or more rows in the height direction. Since the top plate 140 is typically splice welded from a plurality of single plates, such as corrugated plates. Therefore, it is preferable that the top plate electrodes 222 are arranged at intervals along the first direction D1. In this way, in the extended state, the roof electrode 222 can be located in the region of the weld seam of the roof 140 of the container 100 in the first direction D1.

Further, the electrode 220 also includes a front wall panel electrode 223 for generating an electric field primarily at the front wall panel 150. The front wall plate electrode 223 extends in the height direction D3. In the extended state, the front wall panel electrode 223 can be adjacent to the front wall panel 150 of the container 100. In other words, in the extended state, front panel electrode 223 is substantially parallel to front panel 150 and is relatively close to each other. Front wall plate electrode 223 is located at the front end of telescoping mechanism 230. And the front wall plate electrodes 223 are arranged at intervals along the second direction D2. The front wall plate electrodes 223 are shown in the illustrated embodiment as being formed in one row along the second direction D2, but in an embodiment not shown, the front wall plate electrodes may be arranged in two or more rows along the first direction.

Further, for 40-gauge containers and over 40-gauge containers 100, the container 100 typically also includes a gooseneck 160 disposed at the undercarriage. Thus, the electrode 220 also includes a gooseneck-channel electrode 224 for generating an electric field primarily at the gooseneck channel 160.

In the illustrated embodiment, the gooseneck electrode 224 extends in the first direction D1. In the extended state, the gooseneck electrodes 224 can be adjacent to the gooseneck 160 of the container. In other words, in the extended state, the gooseneck electrode 224 is substantially parallel to the gooseneck 160 and is relatively close to the gooseneck electrode. The gooseneck cell electrode 224 is located at the forward end of the telescoping mechanism 230. And the gooseneck-groove electrodes 224 are arranged at intervals along the second direction D2. In an embodiment not shown, the gooseneck-channel electrode may also extend in the second direction. And the gooseneck-groove electrodes are arranged at intervals along the first direction.

Preferably, the illustrated embodiment shows the gooseneck electrodes 224 formed in one row along the second direction D2, but in an embodiment not shown, the gooseneck electrodes may be arranged in two or more rows along the height direction of the telescopic mechanism.

Further, in the illustrated embodiment, the side plate electrode 221 is located above the top plate electrode 222, and the gooseneck electrode 224 is located above the side plate electrode 221. Thus, the container with the chassis facing upwards can be subjected to electrophoretic coating. In an embodiment not shown, the top plate electrode is located above the side plate electrode, which is located above the gooseneck groove electrode. Thus, the container with the top plate upward can be subjected to electrophoretic coating.

The structure of the telescopic mechanism 230 is described in detail below with reference to fig. 4 to 6. As shown, the telescopic mechanism 230 includes a telescopic bracket 231 configured as a link structure, whereby the telescopic bracket 231 can be freely moved telescopically to control the magnitude of the telescopic distance. The fixed end of the telescopic bracket 231 is fixedly connected to the electrophoresis tank 210, and the telescopic end opposite to the fixed end may extend into the container 100. The telescopic support 231 can be suspended in the electrophoretic paint except for the portion connected to the electrophoretic bath 210. In the illustrated embodiment, the telescopic bracket 231 is formed in a substantially cubic structure and is composed of the same structural units.

The telescopic bracket 231 includes a cross link 232 and a connecting shaft 233. The cross links 232 are disposed overlapping in the first direction D1 and are arranged in rows in the second direction D2. The connection shafts 233 extend in the second direction D2, and the corresponding cross links 232 are pivotally connected to the connection shafts 233. The telescopic bracket 231 of the present embodiment is hinged by using the parallelogram principle, and has a large flexible telescopic stroke.

Specifically, the cross links 232 include a plurality of sets of cross links arranged in the first direction D1. Each set of intersecting links includes a first rod 232a and a second rod 232b intersecting the first rod 232 a. Both ends of the first lever 232a are pivotally connected to the connection shafts, respectively. Both ends of the second lever 232b are pivotally connected to the connection shafts, respectively. The respective first bars 232a of each set of cross-links are parallel to one another. The respective second bars 232b of each set of cross-links are parallel to one another. The first and second rods 232a, 232b of adjacent sets of cross links are pivotally connected by a connecting shaft.

The plurality of sets of intersecting links are formed in two rows. The two rows of intersecting links are arranged along a second direction D2. The two ends of the first rod 232a in the two rows of cross links are pivotally connected by a connecting shaft. The two ends of the second bar 232b in the two rows of cross links are pivotally connected by a connecting shaft.

Alternatively, the first and second rods 232a, 232b of each set of cross links are pivotally connected by a connecting shaft. The middle of the first bar 232a in the two rows of cross links is pivotally connected by a connecting shaft. The telescopic bracket 231 can thus have a stable structure and a large stroke (telescopic distance).

Further, the electrode 220 is disposed on the telescopic bracket 231. Specifically, the side plate electrode 221 extends in the height direction D3 of the telescopic bracket 231. The top plate electrode 222 extends along the second direction D2. The front wall plate electrode 223 extends in the height direction D3 of the telescopic bracket 231. The gooseneck cell electrode 224 extends in the first direction D1. In the illustrated embodiment, the side plate electrode 221 and the front wall plate electrode 223 may be understood as vertical electrodes, and the top plate electrode 222 and the gooseneck electrode 224 may be understood as horizontal electrodes.

In the illustrated embodiment, the electrode 220 is a rod electrode. As shown in fig. 6, one end of the side plate electrode 221 is fixed to the connection shaft 233 through an electrode fixing base 234, and the other end opposite to the one end is connected to the connection shaft 233 through an electrode guide 235. The telescopic bracket 231 is relatively movable in the height direction D3 with respect to the other end of the side plate electrode 221.

The top plate electrode 222 is connected to the other end of the side plate electrode 221. And the top plate electrode 222 is disposed below the electrode guide holder 235 so that the top plate electrode 222 does not affect the movement of the telescopic bracket 231 relative to the side plate electrode 221. In the illustrated embodiment, although the number of top plate electrodes 222 is the same as the number of side plate electrodes 221 in one row described above. In an embodiment not shown, the number of top plate electrodes may be set to be less than the number of side plate electrodes of the above-described one row according to actual needs.

One end of the front wall plate electrode 223 is fixed to one connection shaft 233 through an electrode fixing seat 234, and the other end opposite to the one end is connected to the other connection shaft 233 through an electrode guide 235. The telescopic bracket 231 is relatively movable in the height direction D3 with respect to the other end of the front wall plate electrode 223.

One end of the gooseneck cell electrode 224 is fixed to one connecting shaft 233 by an electrode fixing base 234, and the other end opposite to the one end is connected to the other connecting shaft 233 by an electrode guide 235. The telescoping support 231 is capable of relative movement in a first direction D1 with respect to the other end of the gooseneck electrode 224.

In the illustrated embodiment, the electrode holder 234 is a separate member for holding one electrode. The electrode guide 235 is an independent member for limiting one electrode. In an embodiment not shown, the electrode holder may be a separate member for holding two or more electrodes. The electrode guide holder may be an independent member for restraining two or more electrodes.

To enable the telescoping support 231 to be suspended in the electrophoretic paint, the telescoping support 231 is configured to be at least partially hollow. Preferably, the cross links 232 and the connecting shaft 233 are made of hollow members. The weight of the telescoping 231 and the electrode 220 is approximately equal to the buoyancy of the telescoping 231 and the electrode 220 in the electrophoretic paint. Such an aspect allows the telescopic bracket 231 and the electrode 220 to enter in the first direction D1 without contacting the container 100, so that the telescopic process can be smoothly performed. On the other hand, in the extended state, the positions of the telescopic bracket 231 and the electrode 220 with respect to the container 100 can be maintained substantially unchanged and not contact the container 100, so that the electrocoating process can be smoothly performed.

Further, considering that the change in temperature of the electrophoretic paint affects the density of the electrophoretic paint, and that the concentration of the electrophoretic paint gradually decreases as the electrophoretic coating proceeds, both of these factors can cause the buoyancy of the telescopic bracket 231 and the electrode 220 to change. In order that the telescopic mechanism 230 does not incline due to buoyancy change to contact the container 100, the telescopic mechanism 230 further includes a guide member 240 provided on the telescopic bracket 231 to keep the telescopic bracket 231 stable during the telescopic and extended states.

Preferably, the guide 240 is an elongated elastic member. Both ends of the guide member 240 are connected to both ends of the telescopic bracket 231 in the first direction D1, respectively. And the guide member 240 is always in tension with the elastic restoring force of the guide member directed toward the middle thereof. The telescopic bracket 231 receives a pulling force toward the middle. When the telescopic mechanism 230 is switched from the contracted state to the expanded state, the length of the guide member 240 increases, and the pulling force increases accordingly.

In the case where the gravity of the telescopic bracket 231 and the electrode 220 is substantially equal to the buoyancy, the telescopic bracket 231 is in a balanced state and is substantially stationary in the height direction, and at this time, the tensile force of the telescopic bracket 231 has no component in the height direction. In the case where the weight of the telescopic bracket 231 and the electrode 220 is greater than the buoyancy, the telescopic end of the telescopic bracket 231 is inclined downward with respect to the fixed end. The tensile force of the telescopic bracket 231 may be decomposed into a horizontal tensile force extending in the first direction D1 and a vertical tensile force extending in the height direction. The resultant force of the vertical pulling force and the buoyancy force can be substantially equal to the gravity force, with the telescopic bracket 231 in a balanced state and substantially stationary in the height direction. Similarly, it will be appreciated that where the weight of the telescoping 231 and the electrode 220 is less than the buoyancy, the combined force of the vertical tension of the telescoping 231 and the weight can be approximately equal to the buoyancy, with the telescoping 231 in equilibrium and approximately stationary in the height direction.

The guide member 240 in the illustrated embodiment includes 4. The 4 guide members 240 are respectively disposed around the circumference of the telescopic bracket 231 in the first direction D1. And both ends of the guide member 240 are connected to the connection shafts 233 of both ends of the telescopic bracket 231. Preferably, the guide member 240 is a tension spring.

Further, the telescopic mechanism 230 further includes a fixing base 250 fixedly connected to the electrophoresis tank 210. The fixed end of the telescopic bracket 231 is connected with the fixing base 250, and the telescopic end can extend into the container 100. As shown in fig. 4 and 5, the fixed connection shaft 233a of the fixed end of the telescopic bracket 231 passes through the top end of the fixed seat 250. The holder 250 is provided with an opening 251 extending in the height direction D3. The opening 251 is a communication hole, and the driving connection shaft 233b of the fixed end of the telescopic bracket 231 passes through the opening 251. And the driving connection shaft 233b is movable in the height direction D3 with respect to the fixing base 250. The fixed connection shaft 233a and the driving connection shaft 233b are connected to a first rod and a second rod of a set of cross links, respectively.

Further, the telescopic mechanism 230 further includes a driving part (not shown) for providing a driving force to the telescopic bracket 231. The driving part may be disposed at the fixing base 250. Specifically, the driving member includes a fixed end and a telescoping end opposite the fixed end. The fixed end of the driving part is fixed to the fixing base 250. The telescopic end of the driving part is connected with the driving connecting shaft 233b to drive the driving connecting shaft 233b to move together. And the drive connection shaft 233b is connected to the cross link 232, the cross link 232 moves together. Since the telescopic bracket 231 is constructed in a link structure, the driving part acts on the fixed end of the telescopic bracket 231, i.e., drives the whole telescopic bracket 231 to move together accordingly. Preferably, the driving part may be a linear reciprocating part such as a cylinder, a hydraulic cylinder, or the like, for example, a cylinder body of the cylinder is disposed at the fixing base, and the piston rod is connected with the driving connection shaft to drive the driving connection shaft to move in the height direction.

The electrode 220 of the present embodiment can be reasonably arranged on the telescopic mechanism 230. The time required for the telescopic mechanism 230 to switch between the contracted state and the extended state is not more than 60 seconds. Thus, the electrode 220 can be rapidly introduced into the container 100 and withdrawn from the container 100, thereby saving the production time of the container 100 and improving the painting efficiency of the container 100. Preferably, the time required for the telescopic mechanism 230 to switch between the two states is no more than 30 seconds, more preferably no more than 20 seconds. The time required for the telescoping mechanism 230 to transition between the two states may also be no more than 15 seconds, or no more than 10 seconds, if needed and/or desired.

The telescopic mechanism 230 is a long-stroke electrode feeding mechanism. The telescopic mechanism 230 enables the electrodes 220 to be fed into the container 100 in a long stroke. So that the arrangement requirements of the electrodes 220 of the container 100 can be satisfied. It is understood that "long travel" refers to a longer telescoping distance for the telescoping mechanism 230 to transition between the contracted and expanded states. For example, for a 20-gauge container, the telescoping mechanism 230 is configured to telescope a distance of not less than 4 meters from the door end 110 into the container 100. For a 40-gauge container, the telescoping mechanism 230 is configured to telescope a distance of not less than 10 meters from the door end 110 into the container 100.

Further, the telescopic bracket 231 further includes a bearing (not shown). The connection shaft 233 can extend into a bearing, through which the cross link 232 is connected to the connection shaft 233.

The coating apparatus of the present embodiment is mounted by fixing the fixing base of the telescopic mechanism to the end of the electrophoresis tank in the first direction D1. The electrodes are then individually mounted to the respective positions of the telescopic supports.

In order to ensure the effect of the electrophoretic coating of the container, the bearing in this embodiment is made of a wear-resistant and corrosion-resistant plastic material. The telescopic bracket 231 may be made of an insulating material. Alternatively, the telescopic bracket 231 is provided with an insulating coating. The driving part is provided with a protective sleeve for preventing the entry of the electrophoretic paint.

In the case where the electrophoretic paint is an anode electrophoretic paint, the electrode 220 of the present embodiment is an anode electrode. The anode electrode may also be provided with an anode cap, and the anode cap and the anode electrode can be formed as a single body, disposed together on the telescopic mechanism 230.

In the case where the electrophoretic paint is a cathode electrophoretic paint, the electrode 220 of the present embodiment is a cathode electrode. The cathode electrode may also be provided with a cathode cover, and the cathode cover and the cathode electrode can be formed as one body, arranged together on the telescopic mechanism 230.

The container 100 of the present invention is preferably coated by cathodic electrocoating. The electrophoretic paint is an anodic electrophoretic paint, and the electrode 220 is an anodic electrode.

According to another aspect of the present invention, there is provided a coating method using the above-described coating apparatus, the coating method comprising the steps of:

an electrode arrangement step in which the telescopic mechanism 230 conveys the electrode 220 from the outside of the container 100 into the container 100 in the first direction D1;

an electrophoretic coating step for performing electrophoretic coating on the container 100; and

and an electrode resetting step, namely stopping the electrophoretic coating, and returning the telescopic mechanism 230 to the original position.

Further, the painting method further includes a container pre-positioning step, before the electrode arrangement step, in which the container 100 is immersed in the electrophoretic paint, and the container 100 is disposed in a horizontal direction.

For the painting device of the illustrated embodiment, the electrode 220 can be transported into the container 100 from the door end 110 of the container in the electrode arrangement step. And the door 120 of the container 100 is always in an open state, the door end 110 faces the telescopic mechanism 230 in the container pre-positioning step, so that the electrode 220 can be accessed from the door end 110. The container 100 is disposed in a horizontal orientation with the roof 140 parallel to the horizontal. The top panel 140 of the container 100 may also be slightly inclined with respect to the horizontal if needed and/or desired.

Preferably, the first direction D1 is substantially horizontal, and the telescopic mechanism 230 linearly stretches in the horizontal direction.

In the electrode arrangement step and the electrode reset step, the transport time of the electrode 220 does not exceed 60 seconds, and the withdrawal time does not exceed 60 seconds. Preferably, the delivery/withdrawal time of the electrode 220 is no more than 30 seconds, more preferably no more than 20 seconds. The delivery/retraction time of the extension electrode 220 is no more than 15 seconds, or no more than 10 seconds, if needed and/or desired.

Preferably, in the electrode arrangement step, the container 100 is a 20-gauge container, and the maximum conveying distance of the electrodes 220 within the container 100 is not less than 4 meters. The container 100 is a 40-gauge container, and the maximum conveying distance of the electrode 220 into the container 100 is not less than 10 meters.

For the painting apparatus of the illustrated embodiment, in the electrode arrangement step, the container 100 is a 20-gauge container, and the maximum conveying distance of the electrode 220 from the door end 110 into the container 100 is not less than 4 meters. The container 100 is a 40-gauge container, and the maximum conveying distance of the electrode 220 from the door end 110 into the container 100 is not less than 10 meters.

Further, the painting method further includes a container removing step after the electrode resetting step, in which the container 100 after the electrophoretic painting is removed from the electrophoretic bath 210.

It should be noted that removal of container 100 from electrophoresis tank 210 should be done as much as possible to drain the electrophoretic fluid in order to affect subsequent steps such as drying of the e-coat paint.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. Terms such as "part," "member" and the like as used herein can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like as used herein may refer to one component being directly attached to another component or to one component being attached to another component through an intermediary. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

The present invention has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the invention to the embodiments described. In addition, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A paint coating apparatus for a container, comprising:

an electrophoresis tank for accommodating the electrophoresis paint;

an electrode for energizing the electrophoretic paint to paint the container immersed in the electrophoretic paint, wherein the container is formed into a steel structure; and

the telescopic mechanism is used for conveying the electrodes into the container and is arranged in the electrophoresis tank,

wherein the electrode is disposed on the telescoping mechanism, and the telescoping mechanism is configured to be telescoping in at least a first direction, such that the electrode can enter the container from outside the container, and a position of the electrode in the container relative to the container can be changed, the first direction being a direction parallel to a length direction of the container;

the telescoping mechanism is configured to be positioned outside of the container in a collapsed state and at least partially within the container in an extended state; the telescopic mechanism comprises a telescopic bracket which is constructed into a connecting rod structure, and the electrode is arranged on the telescopic bracket;

in the extended state, the electrodes are arranged at intervals in at least one of the first direction, a height direction, and a second direction perpendicular to the first direction and the height direction at the telescopic bracket;

Wherein the telescopic bracket comprises a cross connecting rod and a connecting shaft, wherein the cross connecting rod is overlapped along the first direction and is arranged in a row along a second direction perpendicular to the first direction and the height direction; the connecting shafts extend along the second direction, and the corresponding cross connecting rods are pivotally connected with the connecting shafts.

2. The coating apparatus according to claim 1, wherein the electrode includes a side plate electrode extending in the height direction, the side plate electrode being arranged at intervals in the first direction.

3. The coating apparatus of claim 2, wherein in the extended state the side panel electrode is adjacent to a side panel of the container in the second direction; and/or

4. A painting apparatus according to claim 2, wherein the electrodes comprise at least two sets of the side plate electrodes arranged at intervals along the second direction, one set of the at least two sets of side plate electrodes being adjacent one side plate of the container in the extended state, the other set of the at least two sets of side plate electrodes being adjacent the other side plate of the container.

5. The coating apparatus of claim 1, wherein the electrode comprises a top plate electrode extending in the second direction, the top plate electrode being spaced apart along the first direction.

6. The coating apparatus according to claim 5, wherein the top plate electrode is close to the top plate in the height direction in the extended state; and/or

7. The paint device of claim 1, wherein the electrode comprises a front wall panel electrode extending in the height direction, the front wall panel electrode being adjacent a front wall panel of the container in the extended state.

8. A painting apparatus according to claim 1, wherein the electrode comprises a gooseneck-shaped electrode extending in the first or second direction, the gooseneck-shaped electrode being adjacent to a gooseneck of the container in the extended condition.

9. The coating apparatus of any one of claims 1 to 8, wherein the telescoping mechanism is configured such that a time required to transition between the contracted state and the extended state does not exceed 60 seconds.

10. A painting apparatus according to claim 1, wherein the telescopic support is configured to be at least partially hollow so that the weight of the telescopic support and the electrode is substantially equal to the buoyancy of the telescopic support and the electrode in the paint, so that the electrode does not contact the container.

11. The coating apparatus of claim 1, wherein the telescoping mechanism further comprises a guide member provided on the telescoping support to maintain the telescoping support stationary during telescoping and in an extended state.

12. A painting apparatus according to claim 11, wherein the guide member is an elastic member, both ends of the guide member are connected to both ends of the telescopic bracket, respectively, and the guide member is in a tensioned state.

13. The painting device according to claim 1, characterized in that the cross-connecting rod is connected to the connecting shaft by means of a bearing, which is made of a wear-resistant and corrosion-resistant plastic material.

14. A painting apparatus according to claim 1, wherein the cross link and the connecting shaft are made of hollow members.

15. A painting device according to claim 1, characterized in that the telescopic bracket is made of an insulating material or is provided with an insulating coating.

16. The coating apparatus of claim 1, wherein the telescoping mechanism further comprises a fixed seat fixedly connected to the electrophoresis tank, one end of the telescoping support is connected to the fixed seat, and the other end opposite to the one end is extendable.

17. The coating apparatus according to claim 16, wherein the telescopic mechanism further comprises a driving member for providing a driving force to the telescopic bracket, the driving member being provided at the fixing base.

18. A painting device according to claim 17, characterized in that the drive member is provided with a protective sleeve for preventing the paint from entering.

19. The coating device according to any one of claims 1 to 8, characterized in that,

the coating device is used for a 20-ruler container, and the telescopic mechanism is configured to have a telescopic distance within the container of not less than 4 meters; or alternatively

20. The coating device according to any one of claims 1 to 8, characterized in that,

the electrode is an anode electrode; and/or

The coating apparatus further includes an anode cap.

21. The painting device of any one of claims 1 to 8, wherein the painting device is configured such that the electrode is accessible from a door end of the container into the container.

22. A coating method using the coating apparatus according to any one of claims 1 to 21, characterized by comprising the steps of:

23. The painting method according to claim 22, wherein the painting method further comprises a container positioning step, prior to the electrode arrangement step, in which the container is immersed in the electrophoretic paint, and the container is disposed in a horizontal direction.

24. The method of claim 22, further comprising a container removal step after the electrode resetting step, in which the container after the electrocoating is removed from the electrophoresis tank.

25. The coating method according to claim 22, wherein in the electrode arranging step and the electrode resetting step, a conveying time of the electrode is not more than 60 seconds, and a retreating time is not more than 60 seconds.

26. The coating method according to any one of claims 22 to 25, wherein, in the electrode arrangement step,

the container is a 20-ruler container, and the maximum conveying distance of the electrode in the container is not less than 4 meters; or alternatively