CN219051793U - Workpiece hanger, powder spraying mechanism and household appliance - Google Patents

Abstract

The utility model discloses a workpiece hanger, a powder spraying mechanism and a household appliance. The workpiece hanger comprises a hanging rod and at least two supporting pieces, wherein the at least two supporting pieces are arranged on the hanging rod; the support piece is provided with a support structure for supporting a workpiece, the support structure comprises at least one accommodating groove, the side wall of the accommodating groove is used for clamping the workpiece, and the width of the accommodating groove is reduced along with the increase of the depth of the accommodating groove. In the workpiece hanger, the workpiece is placed in the accommodating groove of the supporting structure, and the workpiece is clamped on the side wall of the accommodating groove, so that the contact area between the hanger and the workpiece can be reduced, the electrostatic shielding effect is weakened, and the phenomena of thin powder hanging points and open bottoms are reduced or avoided.

Description

Workpiece hanger, powder spraying mechanism and household appliance

Technical Field

The utility model relates to the technical field of electrostatic spraying, in particular to a workpiece hanger, a powder spraying mechanism and a household appliance.

Background

In the related art, when a hanger is used for hanging a workpiece for powder spraying operation, if a hook or a hanging needle is used for hanging the workpiece, powder is adsorbed by adopting an electrostatic adsorption principle, electrostatic shielding phenomenon can be generated at the contact point of the hook or the hanging needle and the workpiece due to double electrostatic attraction of the hook or the hanging needle and the workpiece, so that the contact point is thin in powder and even exposed, and manual spraying is needed.

Disclosure of Invention

The embodiment of the utility model provides a workpiece hanger, a powder spraying mechanism and a household appliance.

The workpiece hanger comprises a hanging rod and at least two supporting pieces, wherein the at least two supporting pieces are arranged on the hanging rod;

the support piece is provided with a support structure for supporting a workpiece, the support structure comprises at least one accommodating groove, the side wall of the accommodating groove is used for clamping the workpiece, and the width of the accommodating groove is reduced along with the increase of the depth of the accommodating groove.

In the workpiece hanger, the workpiece is placed in the accommodating groove of the supporting structure, and the workpiece is clamped on the side wall of the accommodating groove, so that the contact area between the hanger and the workpiece can be reduced, the electrostatic shielding effect is weakened, and the phenomena of thin powder hanging points and open bottoms are reduced or avoided.

In some embodiments, the workpiece hanger further comprises a thimble, the thimble is mounted on the hanging rod and located above the supporting piece, and one end of the thimble away from the hanging rod is used for abutting the workpiece.

In some embodiments, the support member exceeds the thimble by a predetermined distance in a radial direction of the hanger bar, the predetermined distance being not less than a thickness of the workpiece.

In some embodiments, the support structure is a saw tooth structure and the receiving groove is a V-shaped groove.

In some embodiments, the depth of the receiving groove is 0.5mm to 1.5mm.

In some embodiments, the top angle of the accommodating groove is 30-90 degrees.

In certain embodiments, the support structure has a thickness of 0.1mm to 1.2mm.

In some embodiments, the at least two supports comprise a first support and a second support, the support structure of the first support and the support structure of the second support being at the same level.

The powder spraying mechanism comprises the workpiece hanger in any one of the embodiments.

The household appliance comprises a cavity, wherein the cavity comprises a liquid containing disc, and the liquid containing disc is processed by the powder spraying mechanism in the embodiment.

In the powder spraying mechanism and the household appliance, the workpiece is placed in the accommodating groove of the supporting structure, and the workpiece is clamped on the side wall of the accommodating groove, so that the contact area between the hanger and the workpiece can be reduced, the electrostatic shielding effect is weakened, and the phenomena of thin powder hanging points and open bottoms are reduced or avoided.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the present utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic view of a workpiece hanger according to an embodiment of the present utility model;

FIG. 2 is a schematic front view of a workpiece hanger according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of area A of FIG. 2;

FIG. 4 is a schematic side view of a workpiece hanger according to an embodiment of the utility model;

FIG. 5 is an enlarged schematic view of region B of FIG. 4;

fig. 6 is a schematic structural view of a support structure according to an embodiment of the present utility model.

Reference numerals: the workpiece rack comprises a workpiece rack body 100, a hanging rod 10, a supporting piece 12, a supporting structure 14, a sawtooth structure 15, a containing groove 16, a V-shaped groove 17, a workpiece 18, a thimble 20, a first supporting piece 22, a second supporting piece 24 and a U-shaped groove 26.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The disclosure herein provides many different embodiments or examples for implementing different structures of the utility model. To simplify the present disclosure, components and arrangements of specific examples are described herein. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to fig. 1 to 6, a workpiece hanger 100 according to an embodiment of the present utility model includes a hanging rod 10 and at least two supporting members 12, wherein the at least two supporting members 12 are mounted on the hanging rod 10, the supporting members 12 are provided with a supporting structure 14 for supporting a workpiece 18, the supporting structure 14 includes at least one accommodating groove 16, side walls of the accommodating groove 16 are used for clamping the workpiece 18, and a width of the accommodating groove 16 decreases with an increase in depth of the accommodating groove 16.

In the workpiece hanger 100, the workpiece 18 is placed in the accommodating groove 16 of the supporting structure 14, and the workpiece 18 is clamped on the side wall of the accommodating groove 16, so that the contact area between the hanger and the workpiece 18 can be reduced, the electrostatic shielding effect is weakened, and the phenomena of thin powder and open bottom of hanging points are reduced or avoided.

Specifically, referring to fig. 1, in some embodiments, two supporting members 12 are disposed on two sides of the hanging rod 10 in the workpiece hanger 100, a supporting structure 14 is disposed on the supporting member 12, the supporting structure 14 is used for supporting a workpiece 18, the workpiece 18 may be clamped on a side wall of the accommodating groove 16 on the supporting structure 14, and the width of the accommodating groove 16 needs to be reduced with the increase of the depth of the accommodating groove 16. Preferably, the workpiece 18 is snapped into the first or second inwardly facing receiving slot 16 at the end of the support structure 14. At least two of the support members 12 support the workpiece 18, and the contact area with the workpiece 18 can be reduced by reducing the thickness of the support structure 14 on the support members 12, so that the electrostatic shielding effect is reduced, and the occurrence of the phenomena of thin powder hanging points and open bottoms is reduced or avoided. The receiving slots 16 in the support structure 14 can hold the workpieces 18 and prevent a significant amount of scrap. In addition, the accommodating groove 16 of the supporting structure 14 is not easy to touch the workpiece 18, so that the workpiece can be easily hung by a person, and the efficiency is high.

The hanging rod 10 in the embodiment can be made of stainless steel rods/carbon steel, the diameter of the hanging rod can be freely selected according to the weight and the size of the workpiece 18, the hanging rod mainly plays roles of connecting conduction and supporting, and the upper end of the hanging rod can be connected with a hanging chain guide rail. The supporting members 12 serve to support the workpiece 18 while being connected to the hanger bar 10, and static electricity generated during spraying is introduced into the ground, and the distance between the supporting members 12 can be properly adjusted according to the size of the workpiece 18. The supporting structure 14 can be made of stainless steel saw tooth sheets or carbon steel saw tooth sheets, and is welded on two sides of the hanging rod 10, and the workpieces 18 can be fixed in parallel and directly hung on the accommodating groove 16 of the supporting structure 14, and the workpieces 18 are clamped by the side walls of the accommodating groove 16, so that on one hand, the contact area with the workpieces 18 can be reduced, electrostatic shielding is reduced, the defects of thin hanging point powder and exposed bottom are avoided, manual powder supplementing operation is removed, and the efficiency is improved; on the other hand, the stability of the workpiece 18 on the suspension chain can be improved, the workpiece 18 is clamped by the side wall of the accommodating groove 16, the front and back movement of the workpiece 18 is reduced, the double-toothed hanging piece can reduce left and right shaking, and the front and back shaking of the workpiece 18 can be reduced by combining the ejector pins 20 which will be mentioned below.

At least two support pieces 12 in this embodiment can increase work piece 18 stability, avoid the shake that causes in the suspension chain operation in-process to make work piece 18 produce and control to rock, reduce the piece risk of falling, can vacate a distance between two support pieces 12 simultaneously, the manual work can directly adopt the couple to hang, reduces and bumps the bad 50% of flowers. The supporting structure 14 can be made of stainless steel, the supporting structure 14 can be made of a sheet-shaped structure, the thickness of the sheet-shaped structure is thin, but the strength is high, the contact area with the workpiece 18 is reduced under the condition that the workpiece 18 is ensured to be firm, the electrostatic shielding effect is weakened, the hanging point powder thickness and the exposed bottom are obviously reduced, manual powder supplement can be canceled, and the effect is improved by 50%. The support structure 14 can strengthen the stability of the workpiece 18, the workpiece 18 is clamped by the side wall of the accommodating groove 16, the workpiece 18 is prevented from moving on the hanger due to shake generated by suspension chain operation, and the risk of falling the workpiece can be reduced by matching with the ejector pin 20 which will be mentioned below.

In some embodiments, the workpiece hanger 100 further includes a thimble 20, the thimble 20 being mounted on the hanger bar 10 above the support member 12, an end of the thimble 20 remote from the hanger bar 10 for abutting the workpiece 18.

Thus, the thimble 20 abutting the workpiece 18 can support the workpiece 18 to stabilize the position of the workpiece 18, and prevent the workpiece 18 from falling off the hanging rod 10.

Specifically, referring to fig. 1 and 2, the thimble 20 can support the workpiece 18, so as to avoid the workpiece 18 from shaking back and forth, reduce the risk of falling the workpiece, and facilitate manual hanging. In some embodiments, the workpiece 18 may shake back and forth due to shake caused during the suspension chain operation, and the workpiece 18 in this embodiment may abut against the workpiece 18, so as to reduce the shake of the workpiece 18 and prevent the workpiece 18 from falling. The thimble 20 can be made of stainless steel or carbon steel rod and welded on the hanging rod 10, and is mainly used for supporting the workpiece 18 after the hanging tool is hung on the workpiece 18, so that the workpiece 18 is prevented from shaking back and forth, hanging of the workpiece 18 can be simplified, and hanging efficiency is improved.

In some embodiments, support 12 extends beyond pins 20 a predetermined distance in the radial direction of hanger bar 10 that is not less than the thickness of workpiece 18.

Thus, the thimble 20 can abut against the workpiece 18 at the side of the support 12 facing the hanging rod 10, so as to prevent the workpiece 18 from falling off from the side of the support 12 facing away from the hanging rod 10.

Specifically, referring to fig. 2, the supporting member 12 extends beyond the thimble 20 by a predetermined distance in the radial direction of the hanger bar 10, that is, at one end of the supporting member 12, the supporting member 12 is longer than the thimble 20. In this way, the workpiece 18 can abut against the side of the support 12 facing the hanging rod 10, so that the workpiece 18 is prevented from falling off the side of the support 12 facing away from the hanging rod 10, and the falling of the workpiece 18 is reduced.

In some embodiments, referring to fig. 2 and 3, the thickness M of the workpiece 18 is 0.5mm to 1.2mm. Thus, the workpiece 18 has a small thickness, and the contact area with the supporting structure 14 can be reduced, so that the electrostatic shielding effect is weakened, and the phenomena of thin powder hanging points and bottom exposure are reduced or avoided. In some specific embodiments, the thickness M of the workpiece 18 may be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, or other values from 0.5mm to 1.2mm.

In some embodiments, referring to fig. 1 to 3, the support structure 14 is a saw tooth structure 15, and the accommodating groove 16 is a V-shaped groove 17.

In this way, the V-shaped groove 17 can reduce the contact area with the workpiece 18, so that the electrostatic shielding effect is weakened, and the hanging point powder thinness and bottoming are remarkably reduced.

Specifically, referring to fig. 3, the supporting structure 14 is a saw-tooth structure 15, the accommodating groove 16 is a V-shaped groove 17 of the saw-tooth structure 15, and the width of the V-shaped groove 17 decreases with the increase of the depth of the V-shaped groove 17, so that the contact area with the workpiece 18 can be reduced, the electrostatic shielding effect is weakened, and the thin and open bottom of the hanging point powder is significantly reduced.

In some embodiments, referring to fig. 6, the receiving slot 16 in the support structure 14 is a U-shaped slot 26. In this way, the U-shaped groove 26 can reduce the contact area with the workpiece 18, so that the electrostatic shielding effect is weakened, and the hanging point powder thinness and bottoming are significantly reduced.

Specifically, the accommodating groove 16 in the supporting structure 14 is a U-shaped groove 26, and the width of the U-shaped groove 26 decreases with the increase of the depth of the U-shaped groove 26, so that the contact area with the workpiece 18 can be reduced, the electrostatic shielding effect is weakened, and the hanging point powder thinness and open bottom are significantly reduced.

In some embodiments, the spike 20 has a diameter R of 1mm to 5mm.

Thus, the diameter of the thimble 20 is proper, and the thimble 20 with small diameter is abutted against the workpiece 18 to reduce the contact area with the workpiece 18, so that the electrostatic shielding effect is weakened, and the phenomena of thin powder hanging points and open bottoms are reduced or avoided.

In particular, referring to FIGS. 4-5, in some embodiments, the diameter R of the needle 20 may be 1mm, 2mm, 3mm, 4mm, 5mm, or other values from 1mm to 5mm.

In some embodiments, the depth L of the receiving groove 16 is 0.5mm to 1.5mm.

Thus, the proper depth of the accommodating groove 16 can prevent the workpiece 18 clamped therein from falling, weaken the electrostatic shielding effect, and reduce or avoid the phenomena of thin powder hanging points and open bottoms.

In particular, referring to fig. 2, 3 and 6, in some embodiments, the depth L of the receiving slot 16 may be 0.5mm to 1.5mm, and may specifically be 0.5mm, 0.7mm, 0.9mm, 1.1mm, 1.3mm, 1.5mm, or other values of 0.5mm to 1.5mm.

In some embodiments, the top angle α of the receiving groove 16 is 30 ° to 90 °.

Thus, the proper angle of the top corner of the accommodating groove 16 can prevent the workpiece 18 clamped therein from falling, weaken the electrostatic shielding effect, and reduce or avoid the phenomena of thin powder hanging points and open bottoms.

Specifically, referring to fig. 2, 3 and 6, in some embodiments, the apex angle α of the accommodating groove 16 is 30 ° to 90 °, and may specifically be 30 °, 40 °, 50 °, 60 °, 70 °, 80 °, 90 °, or other values between 30 ° and 90 °.

In certain embodiments, the thickness D of the support structure 14 is 0.1mm to 1.2mm.

Thus, the thickness of the support structure 14 is small, which reduces the contact area with the workpiece 18, reduces the electrostatic shielding effect, and reduces or avoids the occurrence of the phenomena of thin powder hanging points and open bottoms.

In particular, referring to fig. 4 and 5, in some embodiments, the thickness D of the support structure 14 may be 0.1mm to 1.2mm, and may specifically be 0.1mm, 0.3mm, 0.5mm, 0.7mm, 0.9mm, 1.2mm, or other values between 0.1mm and 1.2mm.

In certain embodiments, at least two of the supports 12 include a first support 22 and a second support 24, with the support structure 14 of the first support 22 and the support structure 14 of the second support 24 being at the same level.

In this way, the workpiece 18 is clamped on the support structure 14 of the first support 22 and the second support 24, respectively.

Specifically, referring to fig. 1 and 4, the first support 22 and the second support 24 are each provided with a support structure 14, and the support structures 14 may be welded to the first support 22 and the second support 24. The first support 22 and the second support 24 are attached to the hanger bar 10, and in some embodiments, the first support 22 and the second support 24 are welded to the hanger bar 10. In addition, the thimble 20 may be welded to the hanging rod 10.

The workpiece hanger 100 of the embodiment of the utility model can be a hanger for electrostatic spraying of a workpiece 18, the workpiece 18 can be an enamel liquid-bearing disc, the upper thimble 20 props against the back of the liquid-bearing disc, shaking of the liquid-bearing disc in the running process of a wire body is reduced, the lower supporting structure 14 can be a saw-tooth-shaped sheet which is clamped in a round hole of the liquid-bearing disc, on one hand, the saw-tooth shape can play a role in fixing to prevent the wire body from running to cause falling, thereby reducing poor falling and saving cost; on the other hand, because the contact area between the supporting structure 14 and the liquid bearing plate is small, the Faraday cage effect is reduced, thereby reducing the electrostatic shielding effect of the contact point and eliminating the hanging point, thus the manual powder supplementing operation can be eliminated, the labor cost is greatly reduced, and the automation is improved.

The workpiece hanger 100 of the embodiment of the utility model has the following advantages:

(1) the defect of thin powder outlet or poor bottom exposure of hanging points is improved; this is because at least two supporting members 12 of the workpiece hanger 100 are mounted on the hanger bar 10, and the thickness is thin and the strength is high by utilizing the sheet-shaped advantage of the supporting structure 14, and the contact area with the workpiece 18 is reduced under the condition of ensuring the stability of the workpiece 18, so that the electrostatic shielding effect is weakened, the problems of thin powder outlet or poor bottom exposing of hanging points are solved, and the manual powder supplementing process is removed

(2) The problem of manual hanging and bumping is solved, because the workpiece hanger 100 adopts at least two supporting pieces 12 to be arranged on the hanging rod 10, a space is reserved in the middle of the parallel supporting structures 14, a contact point is provided for hanging and hanging, and meanwhile, the supporting structures 14 are horizontally placed, so that staff hanging and hanging are facilitated;

(3) improve and fall a problem: the supporting structure 14 is adopted to clamp the workpiece 18, so that the front and back movement of the workpiece 18 is reduced, the left and right shaking of the two supporting pieces 12 can be reduced, meanwhile, the thimble 20 is combined to prop against the back of the workpiece 18, the front and back shaking of the workpiece 18 can be reduced, the triple limit is realized, and the workpiece dropping problem is avoided

A powder spraying mechanism according to an embodiment of the present utility model includes the workpiece hanger 100 according to any of the above embodiments.

In the powder spraying mechanism, the workpiece 18 is placed in the accommodating groove 16 of the supporting structure 14, and the workpiece 18 is clamped on the side wall of the accommodating groove 16, so that the contact area between the hanger and the workpiece 18 can be reduced, the electrostatic shielding effect is weakened, and the phenomena of thin powder hanging points and open bottoms are reduced or avoided.

Specifically, the powder spraying mechanism is used for electrostatic spraying, the powder spraying mechanism comprises a workpiece hanging tool 100, the workpiece hanging tool 100 comprises a hanging rod 10 and at least two supporting pieces 12, the at least two supporting pieces 12 are installed on the hanging rod 10, the supporting pieces 12 are provided with supporting structures 14 for supporting workpieces 18, the supporting structures 14 comprise at least one accommodating groove 16, the side walls of the accommodating groove 16 are used for clamping the workpieces 18, and the width of the accommodating groove 16 is reduced along with the increase of the depth of the accommodating groove 16. Thus, the workpiece 18 is placed in the accommodating groove 16 of the supporting structure, and the workpiece is clamped on the side wall of the accommodating groove 16, so that the contact area between the hanger and the workpiece 18 can be reduced, the electrostatic shielding effect is weakened, and the phenomena of thin powder hanging points and open bottoms are reduced or avoided.

The household appliance comprises a cavity, wherein the cavity comprises a liquid containing disc, and the liquid containing disc is processed by the powder spraying mechanism in the embodiment.

In the above-mentioned household electrical appliance, the workpiece 18 is placed in the accommodating groove 16 of the supporting structure 14, and the workpiece 18 is clamped on the side wall of the accommodating groove 16, so that the contact area between the hanger and the workpiece 18 can be reduced, the electrostatic shielding effect is weakened, and the phenomena of thin powder and open bottom of the hanging point are reduced or avoided.

Specifically, the liquid containing disc on the cavity in the household appliance needs to be subjected to powder spraying, the powder spraying operation is completed through the workpiece hanging tool 100 in the powder spraying mechanism, as the workpiece hanging tool 100 comprises a hanging rod 10 and at least two supporting pieces 12, the at least two supporting pieces 12 are arranged on the hanging rod 10, the supporting pieces 12 are provided with supporting structures 14 for supporting the workpiece 18, the supporting structures 14 comprise at least one containing groove 16, the side walls of the containing groove 16 are used for clamping the workpiece 18, and the width of the containing groove 16 is reduced along with the increase of the depth of the containing groove 16. In this way, the workpiece 18 is placed in the accommodating groove 16 of the supporting structure 14, and the workpiece is clamped on the side wall of the accommodating groove 16, so that the contact area between the hanger and the workpiece 18 can be reduced, the electrostatic shielding effect is weakened, and the phenomena of thin powder hanging points and open bottoms are reduced or avoided.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The workpiece hanger is characterized by comprising a hanging rod and at least two supporting pieces, wherein the at least two supporting pieces are arranged on the hanging rod;

the support piece is provided with a support structure for supporting a workpiece, the support structure comprises at least one accommodating groove, the side wall of the accommodating groove is used for clamping the workpiece, and the width of the accommodating groove is reduced along with the increase of the depth of the accommodating groove.

2. The workpiece hanger of claim 1, further comprising a thimble mounted on said hanger bar and located above said support, an end of said thimble remote from said hanger bar for abutting said workpiece.

3. The workpiece hanger of claim 2, wherein said support exceeds said thimble by a predetermined distance in a radial direction of said hanger bar, said predetermined distance being not less than a thickness of said workpiece.

4. The workpiece hanger of claim 2, wherein the support structure is a saw tooth structure and the receiving slot is a V-shaped slot.

5. The workpiece hanger of claim 1, wherein the depth of the receiving slot is 0.5mm to 1.5mm.

6. The workpiece hanger of claim 1, wherein the top angle of the receiving slot is 30 ° to 90 °.

7. The workpiece hanger of claim 1, wherein the thickness of the support structure is 0.1mm to 1.2mm.

8. The workpiece hanger of claim 1, wherein said at least two supports comprise a first support and a second support, said support structures of said first support and said second support being at the same level.

9. A powder spraying mechanism comprising the workpiece hanger of any one of claims 1 to 8.

10. A household appliance comprising a cavity comprising a liquid tray treated by the powder spraying mechanism of claim 9.

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