Workbench, clothes treatment apparatus and workbench mold

Abstract

A workbench (10), a clothes treatment apparatus and a workbench mold. The workbench (10) is an integrally injection-molded member, and the workbench (10) comprises a top plate (11), a transition connecting plate (12) and a side plate (13). The top plate (11) is provided with a clothes feeding opening (11a); one side of the side plate (13) in the width direction thereof is connected to an outer peripheral wall of the top plate (11) by means of the transition connecting plate (12); and the surface of one side of the side plate (13) in the thickness direction thereof is a first exterior surface (13b), and the surface of the other side of the side plate is a first non-exterior surface (13a). A first gate forming area (13c) corresponding to a first gate of the workbench mold is provided on the side of the first non-exterior surface (13a) close to the transition connecting plate (12) in the width direction of the first non-exterior surface. The workbench (10) can effectively reduce the possibility of flow mark defects appearing on the first exterior surface (13b) of the side plate (13), thereby improving the production yield of the workbench (10).

Description

Workbench, clothing processing equipment and workbench mold

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202311857855.1 and application date of December 29, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the field of injection molding technology, and in particular to a workbench, clothing processing equipment, and a workbench mold. Background Art

[0004] Generally, a workbench for a clothes treating device such as a pulsator washing machine is an important component of the pulsator washing machine and has both functional and aesthetic requirements.

[0005] In the related art, flow line defects are likely to appear on the product when the workbench is injection molded. When heavier flow lines appear on the exterior surface of the product, it not only leads to a low product qualification rate and high cost, but also fails to meet the user's usage needs.

[0006] Summary of the Invention

[0007] In view of this, the embodiments of the present application hope to provide a workbench, a clothing processing device and a workbench mold to improve the flow defects of the workbench and improve the qualified rate of the workbench.

[0008] In a first aspect, an embodiment of the present application provides a workbench for a clothing processing device, wherein the workbench is an integral injection-molded part and comprises:

[0009] A top plate having a clothing loading port;

[0010] A transition connecting plate and a side plate, wherein one side of the side plate along the width direction is connected to the outer peripheral wall of the top plate through the transition connecting plate, the surface of one side of the side plate along the thickness direction is a first appearance surface, and the surface of the other side is a first non-appearance surface, and the first non-appearance surface is provided with a first gate molding area corresponding to the first gate of the workbench mold on the side close to the transition connecting plate along the width direction.

[0011] In one embodiment, the distance between the first gate molding area and the transition connecting plate does not exceed 5 mm.

[0012] In one embodiment, on a plane perpendicular to the length direction of the transition connecting plate, the junction between the transition connecting plate and the side plate is arc-shaped.

[0013] In one embodiment, the side panel has a constant wall thickness area, and the other areas of the side panel except the constant wall thickness area are variable wall thickness areas, the wall thickness of the constant wall thickness area is not less than the maximum wall thickness of the variable wall thickness area, and the constant wall thickness area is closer to the top plate along the width direction of the side panel relative to the variable wall thickness area, and the first gate molding area is arranged in the constant wall thickness area.

[0014] In one embodiment, the wall thickness of the uniform wall thickness area is equal to the wall thickness of the top plate.

[0015] In one embodiment, an extension direction of the first gate molding area and a length direction of the transition connecting plate form an included angle α, and the included angle α is in a range of 30° to 150°.

[0016] In one embodiment, the angle α is 90°.

[0017] In one embodiment, the surface of the top plate on one side along its thickness direction is a second appearance surface, and the surface on the other side is a second non-appearance surface, and the second non-appearance surface is provided with a second gate molding area corresponding to the second gate of the workbench mold.

[0018] In one embodiment, in a plane projection perpendicular to the height direction of the workbench, a size of a line connecting a projection of a center of the second gate molding area and a projection of a center of the first gate molding area is 150 mm to 250 mm.

[0019] In one embodiment, the length of the second gate molding area along its extension direction and / or the length of the first gate molding area along its extension direction is 2 mm to 20 mm; and / or the width of the second gate molding area and / or the width of the first gate molding area is 0.6 mm to 2 mm, and the width direction intersects with the extension direction.

[0020] In a second aspect, an embodiment of the present application provides a clothing processing device, comprising the workbench described in any one of the above embodiments.

[0021] In a third aspect, an embodiment of the present application provides a workbench mold for forming the workbench of the embodiment of the present application, wherein the workbench mold has a workbench cavity, wherein the workbench cavity has a columnar body for forming the clothing loading port, and the workbench cavity includes:

[0022] Top plate cavity;

[0023] A transition connecting plate cavity and a side plate cavity, wherein one side of the side plate cavity along its width direction is connected to the top plate cavity through the transition connecting plate cavity, one side wall of the side plate cavity along its thickness direction is used to form the first appearance surface, and the other side wall is used to form the first non-appearance surface, and a first gate is provided on one side of the side wall used to form the first non-appearance surface close to the transition connecting plate cavity along its width direction.

[0024] In one embodiment, the distance between the first gate and the transition connecting plate cavity is no more than 5 mm.

[0025] In one embodiment, the side plate cavity has a constant thickness area, and the other areas of the side plate cavity except the constant thickness area are variable thickness areas, the thickness of the constant thickness area is not less than the maximum thickness of the variable thickness area, and the constant thickness area is closer to the top plate cavity along the width direction of the side plate cavity relative to the variable thickness area, and the first gate is arranged in the constant thickness area.

[0026] In one embodiment, the thickness of the equal thickness area is equal to the thickness of the top plate cavity.

[0027] In one embodiment, an extension direction of the first gate and a length direction of the transition connecting plate cavity form an included angle β, and the included angle β is in a range of 30° to 150°.

[0028] In one embodiment, the angle β is 90°.

[0029] The workbench of the embodiment of the present application is provided with a first gate molding area corresponding to the first gate of the workbench mold on the side of the first non-exterior surface of the side panel close to the transition connecting plate along its width direction. During the injection molding process of the workbench, when the melt in the workbench cavity flows through the side panel cavity, even if the flow rate is fast on the side of the side panel cavity away from the top plate cavity along the width direction, the flow rate of the melt in the middle area of ​​the side panel cavity along the width direction can be increased by the first gate, so that the melt can show a convex trend in the side panel cavity. In this way, the melt has an obvious front flow, and the various points of the flow front of the melt face outward and will not curl or flip inward, and the melt will not converge, ensuring that the appearance has a stable metallic texture. At the same time, the first gate molding area is located near the transition connecting plate, which can hide the subtle defects caused by the injection of the melt by the first gate during the injection molding process. Therefore, the possibility of flow mark defects on the first exterior surface of the side panel can be effectively reduced, thereby improving the production qualification rate of the workbench and reducing the production cost of the workbench. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic structural diagram of a workbench from one perspective according to an embodiment of the present application;

[0031] Figure 2 is an enlarged schematic diagram of point A in Figure 1;

[0032] Figure 3 is an enlarged schematic diagram of point B in Figure 1;

[0033] FIG4 is a schematic structural diagram of a workbench from another perspective according to an embodiment of the present application;

[0034] FIG5 is a cross-sectional schematic diagram of CC in FIG4 ;

[0035] FIG6 is a schematic diagram of the flow of the melt in the side plate cavity in the related art, wherein the straight arrows schematically show the flow direction of the melt. One side of the side plate cavity is close to the top plate cavity, and the other side is the parting surface.

[0036] FIG7 is a schematic diagram of the flow of the melt in the side plate cavity according to an embodiment of the present application. The straight arrows schematically show the flow direction of the melt. One side of the side plate cavity is close to the top plate cavity, and the other side is the parting surface.

[0037] Figure 8 is a schematic diagram of the flow of the melt in the appearance cavity and the rib cavity extending roughly along the melt flow direction in the related technology. The curved arrows schematically show the flow direction of the melt backflow in the rib cavity, and the straight arrows schematically show the flow direction of the melt in the appearance cavity. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0039] The various specific technical features described in the specific embodiments may be combined in any suitable manner, unless they are inconsistent. For example, different embodiments and technical solutions may be formed by combining different specific technical features. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this application will not be described separately.

[0040] In the following description, the terms "first, second, ..." are used solely to distinguish different objects and do not imply any similarities or connections between the objects. It should be understood that the directions "above," "below," "outside," and "inside" refer to directions during normal use. The directions "left" and "right" refer to the left-right directions shown in the corresponding schematic diagrams, which may or may not be the left-right directions during normal use.

[0041] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element. "A plurality" means greater than or equal to two.

[0042] The following is a detailed description of the embodiments of the present application.

[0043] The worktop of a clothes processing device, such as a pulsator washing machine, is an important component of the washing machine and has both functional and aesthetic requirements.

[0044] Typically, workbench manufacturing involves a combination of injection molding and spraying. The sprayed workbench achieves a stunning metallic appearance, but the spraying process has drawbacks such as high pollution, high costs, low yield rates, and non-recyclability. This severely impacts the environment and the health of production personnel, and is inconsistent with the concept of green manufacturing. To address these shortcomings, spray-free thermoplastic engineering melts have emerged. Spray-free injection molding can achieve a metallic appearance, eliminating the spraying process and reducing production costs. This also avoids the emission of pollutants during the spraying process.

[0045] Whether the workbench is made of spray-free materials or through injection molding + spraying process, for melts with poor fluidity, especially spray-free materials containing metal particles, due to the presence of metal particles and other substances in the spray-free materials, the melt encounters obstacles during the flow process during the injection molding process, which will cause uneven distribution of metal particles. In this way, when the product is injected, light scattering occurs under the irradiation of light, and the product visually forms flow lines, resulting in flow line defects in the product. When flow lines appear on the appearance of the product, it not only leads to a low product qualification rate, but also fails to meet the user's usage needs.

[0046] As shown in Figures 1 to 5, an embodiment of the present application provides a workbench 10 of a clothing processing device. The workbench 10 is an integral injection-molded part. The integral structure not only ensures the structural and performance stability of the workbench 10, but also facilitates molding and simplifies manufacturing. It also eliminates unnecessary assembly parts and connection steps, ensuring the reliability of the connection of the workbench 10. Furthermore, the integrally molded structure has higher overall strength and stability, is more convenient to assemble, and has a longer service life. Optionally, the clothing processing device is a washing machine, a dryer, or a washer-dryer.

[0047] In the following description, a workbench 10 according to an embodiment of the present application is formed by injection molding a melt composed of a matrix containing metal powder. That is, the material of workbench 10 comprises the matrix and the metal powder distributed within the matrix. The workbench 10 formed using the matrix containing metal powder has a metallic appearance and does not require an additional metal coating, i.e., the plastic part is a spray-free plastic part.

[0048] For the convenience of description, the following description will be made by taking as an example the process of forming the workbench 10 by injection molding a melt composed of a matrix containing metal powder.

[0049] The type of metal powder is not limited. For example, the metal powder includes but is not limited to copper, silver and / or aluminum, etc.

[0050] Metal powder refers to the metal in the form of particles. In this application, the size of the particles is not limited.

[0051] The type of the matrix is ​​not limited. For example, the matrix includes but is not limited to resin and the like.

[0052] The workbench 10 includes a top panel 11, a transition panel 12, and side panels 13. Specifically, from the perspective of a clothes handling device during normal use, the top panel 11 is the top panel of the workbench 10, the side panels 13 are the panels surrounding the workbench 10, and the transition panel 12 is the panel at the junction of the top panel 11 and the side panels 13. It will be appreciated that the transition panel 12 has a certain angle formed on it to achieve a transition from the top panel 11 to the side panels 13.

[0053] It should be noted that the dimensions of the three directions of different components in the same absolute coordinate system are different. Generally, the length, width and thickness of an object are determined according to the dimensions of the object extending in the three directions. Length>width>thickness. Therefore, the length, width and thickness of different corresponding components may be different. Therefore, the following description will indicate which component's length, width or thickness is being used.

[0054] Specifically, as shown in Figures 1 and 4, in the embodiment of the present application, the thickness direction of the top plate 11 is represented by d1, the length direction, width direction and thickness direction of the side plate 13 are represented by d2, d3 and d4 respectively, and the length direction of the transition connecting plate 12 is consistent with the length direction d2 of the side plate 13.

[0055] The top plate 11 has a clothing loading port 11 a. When the workbench 10 is installed in a clothing processing device, the clothing loading port 11 a faces the opening of an inner drum of the clothing processing device, thereby facilitating the loading of clothing into the inner drum or taking clothing out of the inner drum.

[0056] One side of the side panel 13 along its width direction d3 is connected to the outer peripheral wall of the top panel 11 through the transition connecting plate 12. The surface of one side of the side panel 13 along its thickness direction d4 is a first appearance surface 13b, and the surface on the other side is a first non-appearance surface 13a.

[0057] Specifically, the first non-exterior surface 13 a is the surface of the side plate 13 facing the top plate 11 along the thickness direction d4 , and the first exterior surface 13 b is the surface of the side plate 13 facing away from the top plate 11 along the thickness direction T2 .

[0058] It is understandable that the first non-exterior surface 13a is not exposed to the outside of the clothing processing device, and the first exterior surface 13b is exposed to the outside of the clothing processing device. During normal use of the clothing processing device, the user cannot see the first non-exterior surface 13a, but can see the first exterior surface 13b.

[0059] A first gate molding area 13c corresponding to the first gate of the workbench mold is provided on one side of the first non-exterior surface 13a close to the transition connecting plate 12 along the width direction thereof.

[0060] Specifically, after the workbench 10 is injection molded using the workbench mold and ejected from the workbench mold, a portion of the melt at the gate of the workbench mold remains on the workbench 10, forming a gate-forming portion. The first gate-forming area 13c is the area where the gate-forming portion corresponding to the first gate is located. It is understood that the workbench 10 can be reprocessed to remove or partially remove the gate-forming portion. Alternatively, the gate-forming portion of the workbench 10 can be left unprocessed, i.e., the gate-forming portion remains on the workbench 10. This is not specifically limited and can be configured based on actual production needs.

[0061] In order to clearly illustrate the workbench 10 provided in the embodiment of the present application, the workbench mold provided in the embodiment of the present application is first described. The workbench mold is used for injection molding the workbench 10 in the embodiment of the present application.

[0062] The present invention provides a workbench mold having a workbench cavity with a columnar body for forming a clothing inlet 11a. During injection molding, the melt enters the workbench cavity and fills the cavity. After the mold is formed and cooled, the mold is opened to obtain the workbench 10.

[0063] The workbench cavity includes a top plate cavity, a transition connecting plate cavity and a side plate cavity.

[0064] One side of the side panel cavity along its width direction is connected to the top panel cavity through the transition connecting plate cavity. One side wall of the side panel cavity along its thickness direction is used to form the first appearance surface 13b, and the other side wall is used to form the first non-appearance surface 13a. A first gate is provided on one side of the side wall used to form the first non-appearance surface 13a close to the transition connecting plate cavity along its width direction.

[0065] The specific analysis of the causes of flow marks is as follows:

[0066] During the melt flow process, the hotter melt comes into contact with the cooler mold, where it quickly freezes on the cavity wall, forming a thin solidified layer. The orientation of the metal powder in this solidified layer determines the appearance of the injection molded part. Stable metal powder flow can achieve consistent metal powder orientation, resulting in a better appearance. During the injection molding process of the workbench 10, a portion of the melt enters the side plate cavity through the top plate cavity and flows roughly along the length direction of the side plate cavity after entering the side plate cavity. Since a parting surface is formed on the side of the side plate cavity away from the top plate cavity in the width direction, the flow rate is relatively fast. At the same time, this portion of the melt flows in through the side of the side plate cavity close to the top plate cavity in the width direction, so that the melt close to the top plate cavity in the width direction of the side plate cavity also has a higher flow rate, as shown in Figure 6. In the process of the melt flowing in the side plate cavity, the melt flow rate is slowest in the middle area of ​​the side plate cavity along the width direction, which is manifested as a situation where the surface of the flow front of the melt is partially concave inward, that is, the flow direction of some points of the flow front is toward the inside of the melt. In this way, the flow front of the melt will continuously curl and flip inward, and the orientation of the metal powder becomes disordered, resulting in obvious flow mark problems in the appearance.

[0067] It can be understood that since the parting surface is at the boundary of the side panel cavity, after the melt flows to the parting surface, it is restricted by the boundary of the parting surface, causing a large amount of melt to flow roughly along the length direction of the side panel cavity, that is, at the parting surface relative to other areas of the side panel cavity, the melt has a greater flow rate along the length direction of the side panel cavity.

[0068] The principle of reducing flow marks in the embodiment of the present application is specifically described as follows:

[0069] As shown in Figures 1 to 3, in the embodiment of the present application, a first gate is provided on a side wall surface used to form the first non-exterior surface 13a, near the transition plate cavity along its width. This first gate allows melt to be injected into the side plate cavity. As shown in Figure 7, during the injection molding process, the melt flow rate in the middle region of the side plate cavity along its width is increased, allowing the melt to exhibit a convex tendency in the side plate cavity. This results in a distinct melt front flow, with each point of the melt front facing outward, without curling or flipping inward, and without melt convergence, ensuring a stable metallic appearance. Furthermore, the first gate is located in an area near the transition plate cavity, equivalent to being closer to the corner between the side plate cavity and the top plate cavity. At this corner, minor imperfections that may result from the melt entering the side plate cavity and impacting the side wall surface used to form the first exterior surface 13b are better concealed, thereby further improving the yield rate of the workbench 10.

[0070] As shown in FIG. 1 and FIG. 4 , in some embodiments, a surface on one side of the top plate 11 along the thickness direction d1 thereof is a second appearance surface 11 b , and a surface on the other side is a second non-appearance surface 11 c .

[0071] It should be noted that the second non-exterior surface 11c is also not exposed to the outside of the clothing processing device, and the second exterior surface 11b is exposed to the outside of the clothing processing device. During normal use of the clothing processing device, the user cannot see the second non-exterior surface 11c, but can see the second exterior surface 11b.

[0072] The second non-exterior surface 11 c is provided with a second gate molding area 11 d corresponding to the second gate of the table mold.

[0073] For the workbench mold, one side wall of the top plate cavity along its thickness direction is used to form the second appearance surface 11b, and the other side wall is used to form the second non-appearance surface 11c and is provided with a second gate.

[0074] The second gate forming area 11d is the area where the gate forming portion corresponding to the second gate is located.

[0075] It can be understood that during the injection molding process of the workbench, the second gate and the first gate are opened in sequence, and a portion of the melt enters the top plate cavity through the second gate, and enters the side plate cavity through one side in the width direction of the side plate cavity. After entering the side plate cavity, it flows roughly along the length direction of the side plate cavity. After flowing to the position of the first gate, the first gate is opened, and a portion of the melt continues to be injected from the first gate. After the two portions of the melt are fused, they flow together along the length direction of the side plate cavity, and in the side plate cavity, they present a flow posture as shown in Figure 7, thereby reducing the risk of flow marks on the first appearance surface 13b of the side panel 13.

[0076] As shown in Figures 1 and 2, in some embodiments, the distance L1 between the first gate molding area 13c and the transition connecting plate 12 does not exceed 5 mm. Specifically, the distance L1 between the first gate molding area 13c and the transition connecting plate 12 refers to the distance between the two along the width direction d3 of the side plate 13.

[0077] For the workbench mold, the distance between the first gate and the transition connecting plate cavity shall not exceed 5mm.

[0078] It can be understood that the transition connecting plate 12 is the plate body at the junction of the top plate 11 and the side plate 13. The transition connecting plate 12 will form a certain corner. When the melt enters the side plate cavity through the first gate, it may have a certain impact on the side wall of the side plate cavity used to form the first appearance surface 13b, thereby causing slight appearance defects. Limiting the distance between the first gate molding area 13c and the transition connecting plate 12 to within 5mm is equivalent to making the first gate molding area 13c closer to the corner. In this way, the corner can provide a certain hiding effect for the slight appearance defects of the first gate molding area 13c, so that the workbench 10 can meet the use requirements. In this way, the production qualification rate of the workbench 10 can be further improved, thereby reducing production costs.

[0079] It should be noted that the specific value of L1 is not limited, and can be, for example, 5 mm, 4.5 mm, 4 mm, 3.5 mm, 3 mm, 2.5 mm, 2 mm, 1.5 mm, or 1 mm.

[0080] As shown in FIG. 4 and FIG. 5 , in some embodiments, on a plane perpendicular to the length direction of the transition connecting plate 12 , the junction between the transition connecting plate 12 and the side plate 13 is arc-shaped.

[0081] For the workbench mold, on a plane perpendicular to the length direction of the transition connecting plate cavity, the junction between the transition connecting plate cavity and the side plate cavity is arc-shaped.

[0082] It's understandable that, for an object on a flat surface, if there's a slight color difference between a certain area and the surrounding areas, the sharp contrast creates a more noticeable effect, resulting in an appearance defect. On a curved surface, however, the contrast is relatively low, making even a slight color difference between that area and the surrounding areas difficult to detect visually. In other words, the same subtle color difference is harder to detect on a curved surface than on a flat surface, making it less likely to cause an appearance defect. The same is true for flow marks. Therefore, the curved transition plate 12 can better improve the appearance defects of the workbench 10 and increase the product qualification rate of the workbench 10.

[0083] As shown in Figures 4 and 5, in some embodiments, the side panel 13 has a uniform wall thickness area 13d, and the other areas of the side panel 13 except the uniform wall thickness area 13d are variable wall thickness areas 13e. The wall thickness of the uniform wall thickness area 13d is not less than the maximum wall thickness of the variable wall thickness area 13e, and the uniform wall thickness area 13d is closer to the top plate 11 along the width direction d3 of the side panel 13 relative to the variable wall thickness area 13e, and the first gate molding area 13c is arranged in the uniform wall thickness area 13d.

[0084] It can be understood that the uniform wall thickness region 13 d and the variable wall thickness region 13 e of the side plate 13 are arranged along the width direction d3 of the side plate 13 , and the uniform wall thickness region 13 d is connected to the transition connecting plate 12 .

[0085] For the workbench mold, the side panel cavity has a constant thickness area, and the other areas of the side panel cavity except the constant thickness area are variable thickness areas. The thickness of the constant thickness area is not less than the maximum thickness of the variable thickness area, and the constant thickness area is closer to the top plate 11 along the width direction of the side panel cavity relative to the variable thickness area, and the first gate is set in the constant thickness area.

[0086] It should be noted that there is no limitation on the thickness variation trend of the variable thickness area. For example, the thickness may gradually decrease along the width direction of the side plate cavity toward the side away from the transition connecting plate cavity.

[0087] The uniform thickness region and the variable thickness region are arranged along the width direction of the side plate cavity. The variable thickness region can be understood as the region where the parting surface of the side plate cavity is located.

[0088] Differences in side panel cavity thickness manifest as differences in melt flow velocity within the side panel cavity. As previously mentioned, if the melt flows in one direction and the flow velocity differences cause a localized inward depression at the melt flow front, flow marks may appear on the first exterior surface 13b of the formed side panel 13.

[0089] By setting up the equal thickness area, the melt can flow more regularly when flowing through the equal thickness area. At the same time, since the thickness of the equal thickness area is not less than the maximum thickness of the variable thickness area, the flow rate of the melt in the variable thickness area can be reduced, thereby reducing the flow rate of the melt at the parting surface. In this way, it is further ensured that the melt can show a convex tendency in the side plate cavity, thereby further reducing the possibility of flow marks on the side plate 13 and improving the production qualification rate of the side plate 13.

[0090] The following explains that the greater the thickness, the faster the melt flow rate.

[0091] When the melt is injected into the workbench mold under certain conditions, the temperature of the cold wall of the workbench cavity drops sharply when the melt contacts it, and a solidification layer is formed. The flow area of ​​the workbench cavity decreases as the thickness of the solidification layer increases, so the thickness of the solidification layer has a significant impact on the flow resistance. The relationship between the flowability s and the thickness h of the workbench cavity satisfies the following formula:

[0092] Among them, η rep is the viscosity of the melt.

[0093] According to the fluidity formula, fluidity s is proportional to the cube of thickness h. For example, a 50% reduction in thickness h reduces fluidity s to one-eighth, equivalent to an eightfold increase in flow resistance. Therefore, a thicker worktable cavity reduces flow resistance, improves fluidity, and increases flow rate.

[0094] As shown in FIG. 4 and FIG. 5 , in some embodiments, the wall thickness of the uniform wall thickness region 13 d is equal to the wall thickness of the top plate 11 .

[0095] For table molds, the thickness of the constant thickness area is equal to the thickness of the top plate cavity.

[0096] In this embodiment, when the melt flows in the equal thickness area and the top plate cavity, the flow rate is more uniform, that is, the melt can flow relatively regularly in the workbench cavity, thereby reducing the probability of flow marks, so as to obtain a workbench 10 with a better appearance and improve the production qualification rate of the workbench 10.

[0097] As shown in FIG1 to FIG3 , in some embodiments, in a plane projection perpendicular to the height direction of the workbench 10, a dimension D1 of a line a connecting the projection of the center of the second gate molding area 11d and the projection of the center of the first gate molding area 13c is 150 mm to 250 mm. That is, 150 mm ≤ D1 ≤ 250 mm, for example, 150 mm, 158 mm, 160 mm, 165 mm, 170 mm, 180 mm, 195 mm, 200 mm, 215 mm, 230 mm, 240 mm, 250 mm, etc.

[0098] It should be noted that, in the embodiment of the present application, the height direction of the workbench 10 is consistent with the thickness direction d1 of the top plate 11 .

[0099] For a table mold, the dimension D2 of the line connecting the projection of the center of the second gate and the projection of the center of the first gate in a plane projection perpendicular to the height direction of the table cavity is 150 mm to 250 mm. That is, 150 mm ≤ D2 ≤ 250 mm. For example, 150 mm, 158 mm, 160 mm, 165 mm, 170 mm, 180 mm, 195 mm, 200 mm, 215 mm, 230 mm, 240 mm, 250 mm, etc.

[0100] It should be noted that the size of the line between the projection of the center of the second gate molding area 11d and the projection of the center of the first gate molding area 13c is the same as the size of the line between the projection of the center of the second gate and the projection of the center of the first gate, that is, D1=D2.

[0101] Taking the opening of the second gate and the first gate in sequence as an example, the hotter melt enters the workbench cavity through the second gate. During the flow, the melt contacts the cooler inner wall of the workbench cavity. As it moves away from the gate, the temperature of the melt becomes lower and lower and the flow rate becomes slower, which is not conducive to filling the entire workbench cavity. After the first gate is opened, the melt flowing out of the first gate can increase the overall temperature of the melt in the workbench cavity, thereby making the overall flow rate of the melt more uniform, which is convenient for quickly filling the entire workbench cavity.

[0102] If the second gate is far away from the first gate, it is difficult for the first gate to effectively drive the melt flowing out of the second gate. If the second gate is close to the first gate, more gates are required for the overall arrangement of the workbench cavity. When the melt flows from one gate to another adjacent gate, flow marks are likely to occur.

[0103] In this embodiment, during the molding process of the workbench 10, the distance between the second gate and the first gate will not be too large or too small. On the one hand, it is convenient to make the overall flow rate and temperature of the melt in the workbench cavity appropriate, so as to quickly fill the entire workbench cavity. On the other hand, the number of gates can also be controlled more reasonably, which is conducive to reducing flow marks on the workbench 10.

[0104] As shown in FIG1 and FIG2 , in some embodiments, the length W1 of the second gate forming area 11d and / or the first gate forming area 13c along its extension direction is 2 mm to 20 mm, for example, 2 mm, 4 mm, 5 mm, 6 mm, 8 mm, 11 mm, 14 mm, 15 mm, 17 mm, 19 mm, or 20 mm.

[0105] For the workbench mold, the length of the second gate along its extending direction and / or the length of the first gate along its extending direction is 2 mm to 20 mm.

[0106] As shown in Figures 1 and 2, the width of the second gate molding area 11d and / or the width W2 of the first gate molding area 13c is 0.6 mm to 2 mm. For example, 0.6 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.7 mm, 1.9 mm, and 2 mm. The width direction intersects the extension direction.

[0107] For the workbench mold, the width of the second gate and / or the width of the first gate is 0.6 mm to 2 mm.

[0108] The following description will be made by taking the first gate molding area 13c as an example.

[0109] It should be noted that the extension direction of the first gate molding area 13c is consistent with the extension direction of the first gate. On the workbench 10, the extension direction of the first gate molding area 13c can be understood as the longitudinal direction of the projection on the first non-exterior surface 13a.

[0110] It can be understood that the width direction of the first gate molding area 13c can be perpendicular to the extension direction. In this way, the first gate molding area 13c is roughly rectangular. Of course, the width direction of the first gate molding area 13c can also be an acute angle or an obtuse angle with the extension direction, which is not limited here.

[0111] In this embodiment, the size setting of the first gate molding area 13c can, on the one hand, enable the corresponding first gate to have a suitable size, which is convenient for the melt to flow from the first gate into the workbench cavity. In addition, the size of the first gate molding area 13c along the extension direction can also make the size of the first gate molding area 13c along other directions smaller, which is convenient for the melt to flow through quickly and reduce the flow marks on the appearance surface of the workbench 10.

[0112] As shown in FIG1 and FIG2 , in some embodiments, the extension direction of the first gate molding area 13c forms an included angle α with the length direction of the transition connecting plate 12, and the included angle α ranges from 30° to 150°, for example, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, etc.

[0113] For the workbench mold, the extension direction of the first gate forms an angle β with the length direction of the transition plate cavity, and the angle β ranges from 30° to 150°. For example, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, etc.

[0114] It should be noted that the extension direction of the first gate molding area 13c can be understood as the length direction of its projection on the side plate 13, and the length direction of the transition connecting plate 12 can be understood as the flow direction of the melt in the transition connecting plate cavity during the injection molding process of the workbench 10.

[0115] It can be understood that during the injection molding process, the second gate and the first gate are opened in sequence. After the melt injected into the workbench cavity through the second gate enters the transition connecting plate cavity and the side plate cavity, it flows roughly along the length direction of the transition connecting plate cavity. When it flows to the first gate, for the melt injected into the side plate cavity or the transition connecting plate cavity through the second gate, the first gate is similar to a rib position. Therefore, flow marks are easily generated at the first gate.

[0116] The following is an analysis of the reasons why flow marks will occur when the melt passes through the ribs:

[0117] As shown in Figure 8, when the melt is injected into the workbench mold under certain conditions, the temperature of the cold wall surface of the workbench cavity drops sharply when the melt contacts it, and a solidification layer is formed. The melt flows in the cavity of the molding appearance surface, and when it flows through the rib structure position, a part of it will flow into the rib cavity 2000. After the melt fills the rib cavity 2000, it will flow back into the original workbench cavity. The unstable flow field formed by this flow direction will destroy the solidification layer to a certain extent, thereby producing flow marks on the appearance surface. In addition, according to the previous analysis, the surface of the first gate molding area formed by the first gate after injection molding and demolding is the non-appearance surface of the workbench. When the melt flows from the cavity of the molding non-appearance surface to the cavity of the molding appearance surface, flow mark defects will also be produced due to the gas and impurities it entrains.

[0118] As shown in Figure 8, the boundary distance between the rib position cavity 2000 and the appearance surface cavity 1000 is longer, and the corresponding contact area is larger, so the melt flows from the appearance surface cavity 1000 to the rib position cavity 2000. Since the space of the rib position cavity 2000 is larger, the melt will not solidify immediately and will flow back to the appearance surface cavity 1000. The wavy arrow in the figure indicates that the melt flows between the appearance surface cavity 1000 and the rib position cavity 2000, which will destroy the solidification layer of the appearance surface cavity 1000 and produce a weld line. The boundary distance between the rib position cavity 2000 and the appearance surface cavity 1000 is short, and the corresponding contact area is large, so the melt flows from the appearance surface cavity 1000 into the rib position cavity 2000. Since the space of the rib position cavity 2000 is small, the melt can be quickly cooled and solidified in the rib position cavity 2000, so that the melt will not flow back from the rib position cavity 2000 to the appearance surface cavity 1000, thereby avoiding destroying the solidification layer of the appearance surface and generating weld lines.

[0119] The above analysis shows that, given a given rib size, minimizing the distance between the rib cavity 2000 and the exterior surface cavity 1000 can reduce the occurrence of flow marks. As shown in Figures 1 and 2, the first gate molding area 13c and the transition plate 12 are arranged at an angle α along their length, with the angle α ranging from 30° to 150°. This allows the melt to quickly flow through the first gate and solidify before it has time to flow back into the side panel cavity, effectively preventing the melt from impacting the side wall of the side panel cavity used to form the first exterior surface 13b and causing weld line defects.

[0120] As shown in Figures 1 and 2, in some embodiments, the angle α is 90°. For a workbench mold, the angle β is 90°.

[0121] That is to say, the width direction of the first gate molding area 13c is parallel to the length direction of the transition connecting plate 12, that is, the width direction of the first gate molding area 13c is parallel to the overall flow direction of the melt. When the melt passes through the first gate, it flows along the width direction of the first gate. In this way, the melt can flow through the first gate more quickly, thereby reducing the impact on the first appearance surface 13b of the side panel 13 to avoid generating flow marks on the first appearance surface 13b.

[0122] An embodiment of the present application provides a clothing processing device, comprising a workbench 10 according to any embodiment of the present application.

[0123] In the description of this application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine different embodiments or examples described in this application and features of different embodiments or examples without contradiction.

[0124] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A workbench for a laundry treatment device, wherein, The workbench is an integrally injection-molded part, and the workbench includes: A top plate having a clothing inlet; A transition connecting plate and a side plate. One side of the side plate in its width direction is connected to the outer peripheral wall of the top plate through the transition connecting plate. One surface of one side of the side plate in its thickness direction is a first appearance surface, and the other surface is a first non-appearance surface. A first gate forming area corresponding to the first gate of the workbench mold is provided on one side of the first non-appearance surface close to the transition connecting plate in its width direction.

2. The workbench according to claim 1, wherein The distance between the first gate forming area and the transition connecting plate does not exceed 5 mm.

3. The workbench according to claim 1 or 2, wherein, In a plane perpendicular to the length direction of the transition connecting plate, the junction of the transition connecting plate and the side plate is arc-shaped.

4. The workbench according to any one of claims 1-3, wherein, The side plate has an equal wall thickness area, and other areas of the side plate except the equal wall thickness area are variable wall thickness areas. The wall thickness of the equal wall thickness area is not less than the maximum wall thickness of the variable wall thickness area, and the equal wall thickness area is closer to the top plate than the variable wall thickness area in the width direction of the side plate. The first gate forming area is arranged in the equal wall thickness area.

5. The workbench according to claim 4, wherein, The wall thickness of the equal wall thickness area is equal to the wall thickness of the top plate.

6. The workbench according to any one of claims 1-5, wherein, The extending direction of the first gate forming area has an included angle α with the length direction of the transition connecting plate, and the range of the included angle α is 30° to 150°.

7. The workbench according to claim 6, wherein, The included angle α is 90°.

8. The workbench according to any one of claims 1-7, wherein, One surface of one side of the top plate in its thickness direction is a second appearance surface, and the other surface is a second non-appearance surface. A second gate forming area corresponding to the second gate of the workbench mold is provided on the second non-appearance surface.

9. The workbench according to claim 8, wherein, In the plane projection perpendicular to the height direction of the workbench, the dimension of the connection line between the projection of the center of the second gate forming area and the projection of the center of the first gate forming area is 150 mm to 250 mm.

10. The workbench according to claim 8 or 9, wherein, The length of the second gate forming area along its extending direction and / or the length of the first gate forming area along its extending direction is 2 mm to 20 mm; and / or, the width of the second gate forming area and / or the width of the first gate forming area is 0.6 mm to 2 mm, and the width direction intersects the extending direction.

11. A clothing treatment device includes the workbench according to any one of claims 1-10.

12. A workbench mold for molding the workbench according to claim 1, wherein, The workbench mold has a workbench cavity, and the workbench cavity has a columnar body for forming the clothing inlet. The workbench cavity includes: A top plate cavity; A transition connecting plate cavity and a side plate cavity. One side of the side plate cavity in its width direction is connected to the top plate cavity through the transition connecting plate cavity. One side wall surface of the side plate cavity in its thickness direction is used for forming the first appearance surface, and the other side wall surface is used for forming the first non-appearance surface. And a first gate is provided on one side wall surface for forming the first non-appearance surface close to the transition connecting plate cavity in its width direction.

13. The workbench mold according to claim 12, wherein, The distance between the first gate and the transition connecting plate cavity does not exceed 5 mm.

14. The workbench mold according to claim 12 or 13, wherein, The side plate cavity has a constant thickness region, and the other regions of the side plate cavity except the constant thickness region are variable thickness regions. The thickness of the constant thickness region is not less than the maximum thickness of the variable thickness regions, and the constant thickness region is closer to the top plate cavity than the variable thickness regions along the width direction of the side plate cavity. The first gate is arranged in the constant thickness region.

15. The workbench mold according to claim 14, wherein, The thickness of the constant thickness region is equal to the thickness of the top plate cavity.

16. The workbench mold according to any one of claims 12-15, wherein, The extending direction of the first gate has an included angle β with the length direction of the transition connecting plate cavity, and the range of the included angle β is 30° to 150°.

17. The workbench mold according to claim 16, wherein, The included angle β is 90°.

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