Cleaning and passivating hanging frame

Abstract

The utility model provides a cleaning and passivating hanging frame which comprises an outer net frame with an opening in the upper end, an inner net frame is connected in the outer net frame in a sliding mode, the bottom of the inner net frame downwards extends out of the bottom of the outer net frame, and a plurality of lower supporting strips capable of extending out of the bottom of the outer net frame are downwards arranged at the bottom of the inner net frame. The inner wall of the outer screen frame is inwards connected with a plurality of fixed supporting sets distributed from bottom to top, each fixed supporting set at least comprises two opposite and horizontally-arranged fixed supporting frames, and the inner wall of the inner screen frame is inwards connected with a plurality of movable supporting sets in one-to-one correspondence with the fixed supporting sets. Each movable supporting set at least comprises two opposite and horizontally-arranged movable supporting frames and further comprises a plurality of containing net discs matched with the fixed supporting sets and a plurality of supporting net discs matched with the movable supporting sets, and the supporting net discs are upwards provided with a plurality of upper supporting strips. According to the utility model, a workpiece can be movably supported in a layered manner, passivation dead angles can be effectively avoided, and the passivation uniformity is improved.

Description

Technical Field

[0001] This utility model belongs to the field of metal surface treatment technology and relates to a cleaning and passivation hanging frame. Background Technology

[0002] In the surface treatment process of metal workpieces, passivation is a common anti-corrosion treatment method. It aims to form a dense oxide film on the metal surface through a chemical reaction to improve its corrosion resistance. In this process, the metal workpiece is usually placed in a hanging frame, and then the entire hanging frame is immersed in the passivation solution for treatment, or it is used to hold and rinse the workpiece in the cleaning process.

[0003] Currently used hanging frames are mostly simple stainless steel frames. While they possess a certain degree of corrosion resistance and strength, their structural design is relatively simplistic, lacking effective isolation and support for workpieces and the contact areas between workpieces and the hanging frame. When multiple workpieces need to be processed simultaneously, operators often have to stack them layer by layer inside the hanging frame, resulting in contact between workpieces or insufficient spacing. This creates numerous processing dead zones during the passivation solution immersion process, affecting the consistency and integrity of the passivation effect. Furthermore, areas where the workpiece directly contacts the hanging frame also suffer from poor passivation due to insufficient contact with the passivation solution or rinsing water, thus reducing the overall surface treatment quality of the workpiece. Utility Model Content

[0004] The purpose of this invention is to provide a cleaning and passivation hanging frame that can provide layered and movable support for the workpiece, effectively avoid dead corners in passivation, and improve the uniformity of passivation.

[0005] To solve the above-mentioned technical problems, this utility model provides a cleaning and passivation hanging frame, including an outer mesh frame with an opening at the top, an inner mesh frame slidably connected inside the outer mesh frame, the outer wall of the inner mesh frame fitting against the inner wall of the outer mesh frame, the bottom of the inner mesh frame extending downwards from the bottom of the outer mesh frame, and multiple lower support strips extending downwards from the bottom of the outer mesh frame provided at the bottom of the inner mesh frame. Multiple sets of fixed support groups distributed from bottom to top are connected inwards to the inner wall of the outer mesh frame, each fixed support group including at least two opposing and horizontally arranged fixed supports. The support frame includes a fixed support frame that extends inward from the inner mesh frame. The inner wall of the inner mesh frame is connected to multiple sets of movable support groups that correspond one-to-one with the fixed support groups. Each set of movable support groups includes at least two opposite and horizontally arranged movable support frames. Each movable support frame is located below the corresponding fixed support frame. The support frame also includes multiple placement mesh trays that cooperate with the fixed support groups and multiple supporting mesh trays that cooperate with the movable support groups. The supporting mesh trays are provided with multiple upper support strips that can extend from the mesh holes of the placement mesh trays.

[0006] By adopting the above technical solution, when passivating a single workpiece, the workpiece is simply placed at the bottom of the outer mesh frame. When the hanging frame carries the workpiece and gradually immerses it in the passivation liquid through the hoisting mechanism, the passivation liquid contacts the workpiece through the hanging frame to passivate it. When the lower support bar contacts the bottom of the passivation pool, the inner mesh frame stops descending, while the outer mesh frame continues to descend. At this time, the bottom of the inner mesh frame supports the workpiece, so that the part of the bottom of the workpiece that contacts the bottom of the outer mesh frame can fully contact the passivation liquid for passivation.

[0007] When passivating multiple workpieces, the workpieces are first evenly laid at the bottom of the outer mesh frame. Then, a support mesh tray is placed on the top of the two movable support frames, and a placement mesh tray is placed on the top of the two fixed support frames. The workpieces are evenly laid on the top of the placement mesh tray. When the hanging frame carrying the workpieces is gradually immersed into the passivation liquid through the hoisting mechanism, the lower support bar contacts the bottom of the passivation pool, the inner mesh frame rises relative to the outer mesh frame, and the bottom of the inner mesh frame supports the workpieces. The movable support frame drives the support mesh tray to rise, so that the upper support bar pushes the workpieces on the placement mesh tray upwards, so that the part of the workpiece in contact with the outer mesh frame or placement mesh tray can fully contact the passivation liquid for passivation.

[0008] The present invention is further configured such that a plurality of lifting lugs are provided at the upper end of the outer mesh frame.

[0009] The present invention is further configured such that the mesh at the bottom of the outer mesh frame is a strip-shaped grid mesh, the mesh at the bottom of the inner mesh frame is a strip-shaped grid mesh, and the grid mesh of the outer mesh frame and the grid mesh of the inner mesh frame are distributed alternately in pairs.

[0010] The present invention is further configured such that each lower support bar is U-shaped with an upward opening, and its two ends pass upward through the grid mesh of the outer mesh frame and connect to the bottom of the inner mesh frame.

[0011] The present invention is further configured such that each fixed support frame is a U-shaped opening with the horizontal direction outward, and each movable support frame is a U-shaped opening with the horizontal direction outward.

[0012] The present invention is further configured such that the mesh of the placed mesh tray is a strip-shaped grid mesh, and each upper support strip is approximately in the shape of an upward-facing "Z".

[0013] The present invention is further configured such that the outer mesh frame, the inner mesh frame, the placement mesh tray, and the supporting mesh tray are all made of corrosion-resistant stainless steel.

[0014] Compared with the prior art, this utility model uses an outer mesh frame and an inner mesh frame to cooperate. When the outer mesh frame is not in contact with the bottom of the passivation tank, the bottom of the outer mesh frame or the mesh tray contacts the workpiece. When it contacts the bottom of the passivation tank, the inner mesh frame rises relative to the outer mesh frame, and drives the supporting mesh tray to rise. The bottom of the inner mesh frame or the upper support strip on the supporting mesh tray alternately contacts the workpiece, so that the part of the workpiece that was originally blocked can fully contact the passivation liquid for passivation, effectively avoiding passivation dead corners and improving the uniformity of passivation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of the outer frame;

[0017] Figure 3 This is a schematic diagram of the overall structure of the inner frame;

[0018] Figure 4 This is used to illustrate the relationship between placing a cloud drive and supporting it.

[0019] The components are: 1. Outer mesh frame; 2. Lifting lugs; 3. Inner mesh frame; 4. Lower support bar; 5. Fixed support frame; 6. Movable support frame; 7. Placement of mesh tray; 8. Supporting mesh tray; 9. Upper support bar. Detailed Implementation

[0020] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the cleaning and passivation hanging frame proposed by this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar parts.

[0021] Example, refer to Figure 1-4 A cleaning and passivation hanging frame includes an outer mesh frame 1 with an open top. Four lifting lugs 2 are provided on the upper end of the outer mesh frame 1. An inner mesh frame 3 is slidably connected inside the outer mesh frame 1. The outer wall of the inner mesh frame 3 is in contact with the inner wall of the outer mesh frame 1. The bottom of the inner mesh frame 3 extends downward from the bottom of the outer mesh frame 1. The mesh holes at the bottom of the outer mesh frame 1 are strip-shaped grid mesh holes, and the mesh holes at the bottom of the inner mesh frame 3 are strip-shaped grid mesh holes. The grid mesh holes of the outer mesh frame 1 and the grid mesh holes of the inner mesh frame 3 are staggered, so that the bottom of the outer mesh frame 1 and the bottom of the inner mesh frame 3 can stagger to support the workpiece. Three lower support bars 4 are provided downward from the bottom of the inner mesh frame 3, which can extend from the bottom of the outer mesh frame 1. Each lower support bar 4 is U-shaped with an upward opening, and its two ends pass upward through the grid mesh holes of the outer mesh frame 1 and connect to the bottom of the inner mesh frame 3.

[0022] The inner wall of the outer mesh frame 1 is connected to two sets of fixed support groups distributed from bottom to top. Each fixed support group includes at least two opposite and horizontally arranged fixed support frames 5. In this embodiment, there are two opposite fixed support frames 5 arranged on the inner wall of the long side of the outer mesh frame 1. Each fixed support frame 5 is U-shaped with its opening horizontally outward. Each fixed support frame 5 extends inward to the inner mesh frame 3. The inner wall of the inner mesh frame 3 is connected to multiple sets of movable support groups that correspond one-to-one with the fixed support groups. Each movable support group includes at least two opposite and horizontally arranged movable support frames 6. In this embodiment, there are two movable support frames 6 arranged on the inner wall of the long side of the inner mesh frame 3. Each movable support frame 6 is U-shaped with its opening horizontally outward, and each movable support frame 6 is located below the corresponding fixed support frame 5.

[0023] It also includes multiple placement trays 7 that cooperate with the fixed support assembly. The mesh of the placement trays 7 is a strip-shaped grid mesh, and the placement trays 7 are used to place workpieces. It also includes multiple supporting trays 8 that cooperate with the movable support assembly. The supporting trays 8 are provided with multiple upper support bars 9 that can extend from the grid mesh of the placement trays 7. Each upper support bar 9 is approximately shaped like an upward-facing "Z". In order to improve the rehabilitation performance of the hanging frame, the outer mesh frame 1, the inner mesh frame 3, the placement trays 7 and the supporting trays 8 are all made of corrosion-resistant stainless steel.

[0024] Usage: When passivating a single workpiece, simply place the workpiece at the bottom of the outer mesh frame 1. As the workpiece is gradually immersed into the passivation liquid by the hoisting mechanism, the passivation liquid passes through the frame and contacts the workpiece. When the lower support bar 4 contacts the bottom of the passivation pool, the inner mesh frame 3 stops descending, while the outer mesh frame 1 continues to descend. At this time, the bottom of the inner mesh frame 3 supports the workpiece, allowing the part of the workpiece bottom that contacts the bottom of the outer mesh frame 1 to fully contact the passivation liquid for passivation.

[0025] When passivating multiple workpieces, the workpieces are first evenly laid at the bottom of the outer mesh frame 1. Then, the supporting mesh tray 8 is placed on the top of the two movable support frames 6, and the placement mesh tray 7 is placed on the top of the two fixed support frames 5. The workpieces are evenly laid on the top of the placement mesh tray 7. When the hanging frame carrying the workpieces is gradually immersed into the passivation liquid through the hoisting mechanism, the lower support bar 4 contacts the bottom of the passivation pool, the inner mesh frame 3 rises relative to the outer mesh frame 1, and the bottom of the inner mesh frame 3 supports the workpieces. The movable support frame 6 drives the supporting mesh tray 8 to rise, so that the upper support bar 9 pushes the workpieces on the placement mesh tray 7 upward, so that the part of the workpiece in contact with the outer mesh frame 1 or the placement mesh tray 7 can fully contact the passivation liquid for passivation.

[0026] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0027] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A cleaning and passivating hanger comprising an outer net frame (1) open at the upper end, characterized in that, A inner frame (3) is slidably connected inside the outer frame (1). The outer wall of the inner frame (3) is in contact with the inner wall of the outer frame (1). The bottom of the inner frame (3) extends downward beyond the bottom of the outer frame (1). Multiple lower support bars (4) that can extend out from the bottom of the outer frame (1) are provided downward at the bottom of the inner frame (3). Multiple sets of fixed support groups distributed from bottom to top are connected inward on the inner wall of the outer frame (1). Each set of fixed support groups includes at least two relatively arranged and horizontally set fixed support frames (5). Each fixed support frame (5) extends inward into the inner frame (3). Multiple sets of movable support groups corresponding to the fixed support groups are connected inward on the inner wall of the inner frame (3). Each set of movable support groups includes at least two relatively arranged and horizontally set movable support frames (6). Each movable support frame (6) is located below the corresponding fixed support frame (5). Multiple placing mesh trays (7) that cooperate with the fixed support groups are also included. Multiple lifting mesh trays (8) that cooperate with the movable support groups are also included. Multiple upper support bars (9) that can extend out from the mesh holes of the placing mesh trays (7) are provided upward on the lifting mesh trays (8).

2. A cleaning and passivating hanger according to claim 1, characterized in that Multiple lifting lugs (2) are provided upward at the upper end of the outer frame (1).

3. The cleaning and passivation hanger according to claim 1, characterized in that The mesh holes at the bottom of the outer frame (1) are strip-shaped grid mesh holes. The mesh holes at the bottom of the inner frame (3) are strip-shaped grid mesh holes. The grid mesh holes of the outer frame (1) and the grid mesh holes of the inner frame (3) are staggered with each other in pairs.

4. A cleaning and passivating hanger according to claim 3, characterized in that Each lower support bar (4) is in a U shape with an upward opening, and its two ends pass upward through the grid mesh holes of the outer frame (1) and are connected to the bottom of the inner frame (3).

5. The cleaning and passivation hanger according to claim 1, wherein Each fixed support frame (5) is in a U shape with an outward horizontal opening. Each movable support frame (6) is in a U shape with an outward horizontal opening.

6. The cleaning and passivation hanger according to claim 1, wherein The mesh holes of the placing mesh tray (7) are strip-shaped grid mesh holes. Each upper support bar (9) is approximately in a shape like a reversed U shape with an upward setting.

7. The cleaning and passivation hanger according to claim 1, characterized in that The outer frame (1), the inner frame (3), the placing mesh tray (7) and the lifting mesh tray (8) are all made of corrosion-resistant stainless steel materials.

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