Workbench, clothes treatment device, and workbench mold

Abstract

A workbench (1), used for a clothes treatment device. The material of the workbench (1) comprises a base material and metal powder distributed in the base material; the workbench (1) is an integrated injection-molded piece; a clothes feeding opening is formed in the workbench (1); one side of the workbench (1) in the thickness direction is provided with an exterior surface (1a), and the other side of the workbench (1) in the thickness direction is provided with a non-exterior surface (1b); the non-exterior surface (1b) of the workbench (1) is provided with a plurality of gate forming areas corresponding to gates on a workbench mold; the workbench (1) is of a symmetrical structure; and the plurality of gate forming areas are symmetrically arranged relative to a plane of symmetry of the workbench. Thus, the flow mark defects on the exterior surface of the workbench can be reduced, thereby increasing the pass rate of the workbench. In addition, the present invention further relates to a clothes treatment device comprising the workbench, and a workbench mold.

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 202311865068.1 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] Taking the application of a workbench in clothing processing equipment as an example, in the related art, flow mark defects are prone to appear on the exterior surface of the workbench after injection molding. When the flow mark defects are more obvious, they will affect the appearance of the product. Therefore, the pass rate of the workbench is low, the scrap rate is high, and the manufacturing cost is high.

[0005] Summary of the Invention

[0006] In view of this, the embodiments of the present application hope to provide a workbench, a clothing processing device and a workbench mold to reduce flow mark defects on the exterior surface of the workbench and improve the pass rate of the workbench.

[0007] An embodiment of the present application provides a workbench for use in a clothing processing device. The workbench is made of a base and metal powder distributed in the base. The workbench is an integral injection-molded part having a clothing loading port. The workbench has an exterior surface on one side along the thickness direction and a non-exterior surface on the other side along the thickness direction. The non-exterior surface of the workbench has a plurality of gate molding areas corresponding to gates on a workbench mold.

[0008] The workbench is a symmetrical structure, and the plurality of gate molding areas are symmetrically arranged about a symmetrical plane of the workbench.

[0009] In some embodiments, the workbench includes an annular ring plate, a top plate and side plates, the annular ring plate defines the clothing loading port, the appearance surface of the annular ring plate faces the center of the clothing loading port, the top end of the annular ring plate is connected to the top plate, the bottom end of the annular ring plate extends toward the center of the clothing loading port, the side plates are bent downward from the side edges of the top plate along the left and right directions, and at least one gate molding area is arranged on the symmetry plane.

[0010] In some embodiments, the plurality of gate molding areas include a first gate molding area and two second gate molding areas symmetrically arranged about the symmetry plane, the first gate molding area and the two second gate molding areas are arranged on the non-appearance surface of the annular ring plate, the first gate molding area is located on the symmetry plane, the first gate molding area is arranged in the area of ​​the front side of the annular ring plate facing the workbench, and the two second gate molding areas are arranged at the position of the annular ring plate for connection with the top plate.

[0011] In some embodiments, with the center of the clothing delivery port as the center of the circle, the first gate molding area and the second gate molding area are located on different circumferences, and the distance between the first gate molding area and the bottom edge of the annular ring plate does not exceed half the height of the annular ring plate.

[0012] In some embodiments, in the projection in the height direction perpendicular to the workbench, the line connecting the center of the clothing loading port and the center of the first gate molding area is used as a reference line, and the angle between the line connecting the center of the second gate molding area and the center of the clothing loading port and the reference line does not exceed 45°.

[0013] In some embodiments, the plurality of gate molding areas include two third gate molding areas symmetrically arranged about the symmetry plane, each of the third gate molding areas is arranged on the non-exterior surface of the side plate, and is arranged at the position of the side plate for connection with the top plate, and the third gate molding area is arranged adjacent to the second gate molding area.

[0014] In some embodiments, the plurality of gate molding areas include two fourth gate molding areas symmetrically arranged about the symmetry plane, each of the fourth gate molding areas is arranged on the non-exterior surface of the top plate, and is arranged at a portion of the top plate for connection with the side plate, and the fourth gate molding area is arranged adjacent to the third gate molding area.

[0015] In some embodiments, a transition portion is formed at the junction of the top plate and the side plate;

[0016] The extension direction of the third gate molding zone is perpendicular to the length direction of the transition connection portion, and / or the extension direction of the fourth gate molding zone is perpendicular to the length direction of the transition connection portion.

[0017] In some embodiments, the transition connection portion forms a transition surface at the junction of the non-exterior surface of the top plate and the non-exterior surface of the side plate;

[0018] The distance between the third gate molding area and the transition surface is no more than 5 mm; the distance between the fourth gate molding area and the transition surface is no more than 5 mm.

[0019] In some embodiments, in a plane projection perpendicular to the height direction of the workbench, a size of a line connecting the projections of the centers of any two adjacent gate molding areas is 150 mm to 250 mm.

[0020] In some embodiments, the length of the gate forming area along its extension direction is 2 mm to 20 mm; and / or the width of the gate forming area is 0.6 mm to 2 mm, wherein the width direction intersects with the extension direction.

[0021] An embodiment of the present application provides a clothing processing device, comprising the workbench described in any embodiment of the present application.

[0022] An embodiment of the present application provides a workbench mold for molding the workbench described in any embodiment of the present application, the workbench mold comprising a workbench mold core having a workbench cavity, the workbench cavity having a columnar body for molding the clothing loading port, a first sidewall surface of the workbench cavity along the thickness direction being used to mold the exterior surface of the workbench, and a second sidewall surface of the workbench cavity along the thickness direction being used to mold the non-exterior surface of the workbench; the second sidewall surface of the workbench cavity being provided with a plurality of gates;

[0023] The workbench cavity is a symmetrical structure, and the plurality of gates are symmetrically arranged about a symmetrical plane of the workbench cavity.

[0024] In some embodiments, the workbench cavity includes an annular ring plate cavity, a top plate cavity and a side plate cavity, the annular ring plate cavity is connected to the columnar body, the annular ring plate cavity is used to form a side wall of the appearance surface of the annular ring plate toward the center of the columnar body, the top end of the annular ring plate cavity is connected to the top plate cavity, the bottom end of the annular ring plate cavity extends toward the center of the columnar body, the side plate cavity is bent downward from the side edge of the top plate cavity along the left and right directions, and at least one gate is arranged on the symmetrical surface of the annular ring plate cavity.

[0025] The workbench provided in the embodiment of the present application is integrally formed by a spray-free injection molding process, which does not require additional spraying of a metal coating and is easy to mold. While giving the workbench a metallic appearance, the probability of pollutants generated by spraying is reduced; the workbench is provided with a plurality of gate molding areas, which facilitates the melt to quickly fill the workbench cavity. The workbench has a symmetrical structure, which facilitates increasing the appearance of the workbench. Moreover, the plurality of gate molding areas are symmetrically arranged about the symmetry plane, and the flow position and flow velocity of the melt on both sides of the symmetry plane are relatively consistent, which facilitates the melt to evenly and quickly fill the workbench cavity, reduces the probability of generating an unstable flow field, thereby reducing the probability of generating flow marks and improving the appearance performance of the workbench. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a schematic structural diagram of a workbench according to an embodiment of the present application;

[0027] FIG2 is a schematic structural diagram of a workbench according to an embodiment of the present application from another perspective;

[0028] FIG3 is an enlarged schematic diagram of point A in FIG2 ;

[0029] FIG4 is an enlarged schematic diagram of point B in FIG2 ;

[0030] FIG5 is an enlarged schematic diagram of point C in FIG2 ;

[0031] FIG6 is an enlarged schematic diagram of point D in FIG2 ;

[0032] FIG7 is a structural schematic diagram of a workbench according to an embodiment of the present application from another perspective;

[0033] FIG8 is an enlarged schematic diagram of point E in FIG7 ;

[0034] Figure 9 is a schematic diagram of the flow of the melt in the appearance cavity and the gate cavity extending roughly along the melt flow direction in the related technology. The curved arrow schematically shows the flow direction of the melt reflux in the gate cavity, and the straight arrow schematically shows the flow direction of the melt in the appearance cavity. DETAILED DESCRIPTION

[0035] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed description in the specific implementation methods should be understood as an explanation of this application and should not be regarded as an improper restriction on this application.

[0036] 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 the present invention will not be described separately.

[0037] 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 directional descriptions "above," "below," "top," and "bottom" refer to the 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.

[0038] 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.

[0039] In order to improve the visual appearance of the product, the appearance of some plastic parts of the product usually needs to have a gorgeous metallic appearance effect. In order to enable the plastic parts to have a gorgeous metallic appearance effect, in the relevant technology, the manufacturing process of plastic parts is mostly an injection molding + spraying process, that is, metal powder is sprayed on the outer surface of the injection-molded injection-molded blank. The plastic parts after spraying have a gorgeous metallic appearance effect. However, the spraying process has disadvantages such as high pollution, high cost, low pass rate and cannot be recycled after scrapping.

[0040] In order to solve the shortcomings of the spraying process, spray-free thermoplastic engineering plastics came into being. The use of spray-free injection molding can give the product a metallic appearance effect, thereby eliminating the spraying process and avoiding the emission of pollutants during the spraying process. However, whether it is a spraying injection molding process or a spray-free injection molding process, flow marks are prone to occur. Taking the manufacture of a workbench using the spray-free injection molding process as an example, since the melt of the spray-free thermoplastic engineering plastic contains metal powder, during the injection molding process, the melt is likely to cause uneven distribution of metal powder during the flow of the melt in the workbench cavity, and some parts are darker in color, visually forming flow marks, causing the workbench to have flow mark defects, making the appearance quality of the spray-free workbench unable to meet the product appearance requirements, resulting in low workbench yield, material waste, and high production costs. Therefore, it is difficult for existing workbenches with high-quality appearance requirements to adopt the spray-free injection molding process.

[0041] Please refer to FIG. 1 to FIG. 8 , an embodiment of the present application provides a workbench 1 .

[0042] The application scenario of the workbench 1 is not limited. In the embodiment of the present application, the application of the workbench 1 to a clothing processing device is described as an example.

[0043] An embodiment of the present application provides a clothing processing device, comprising the workbench 1 of any embodiment of the present application.

[0044] The specific type of clothing processing equipment is not limited, and can be a pulsator washing machine, a washer-dryer, etc., and is not limited here.

[0045] The workbench 1 is an integral injection-molded part.

[0046] That is to say, the workbench 1 is integrally formed by injection molding. The integral workbench 1 is convenient to form and simple to manufacture, does not require redundant assembly parts and connection processes, and is easy to assemble with other structures of the clothing processing equipment, thereby improving the assembly efficiency of the clothing processing equipment.

[0047] For example, the workbench 1 can be a spray-free, one-piece injection-molded part. For example, the workbench 1 of the present embodiment can be formed by injection molding a melt composed of a matrix containing metal powder. That is, the material of the workbench 1 includes the matrix and the metal powder distributed within the matrix. The workbench 1 formed using the metal powder-containing matrix has a metallic appearance and does not require additional metal coating, meaning that the workbench 1 is a spray-free plastic part.

[0048] For ease of description, the following description will be made by taking as an example the process of injecting a melt composed of a matrix containing metal powder through a workbench mold to form the workbench 1 .

[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] It should be noted that metal powder refers to metal in the form of particles. In this application, there is no limitation on the particle size.

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

[0052] 1 and 2 , the workbench 1 has a clothes-introducing port 1 c . Specifically, clothes can be put into or taken out of the clothes-processing device through the clothes-introducing port 1 c .

[0053] Exemplarily, the clothing processing equipment includes a box body and a drum assembly, the workbench 1 is arranged at the top of the box body, the drum assembly has a clothing processing chamber, and the top side of the drum assembly has an opening. The clothes to be washed can be placed into the clothing processing chamber from the top side through the clothing loading port 1c and the opening, and the washed clothes can also be taken out from the clothing processing chamber through the opening and the clothing loading port 1c.

[0054] To facilitate the description of the workbench 1 of the embodiment of the present application, the embodiment of the present application further provides a workbench mold for forming the workbench 1 of any embodiment of the present application. The workbench mold includes a workbench mold core having a workbench cavity, and the workbench cavity has a columnar body for forming the clothing inlet 1c.

[0055] 1 and 2 , the workbench 1 has an exterior surface 1 a on one side along the thickness direction and a non-exterior surface 1 b on the other side along the thickness direction.

[0056] Correspondingly, in the workbench mold, the first side wall surface of the workbench cavity along the thickness direction is used to form the appearance surface 1a of the workbench 1, and the second side wall surface of the workbench cavity along the thickness direction is used to form the non-appearance surface 1b of the workbench 1.

[0057] It should be noted that the exterior surface 1a is exposed on the outside of the clothing processing device, while the non-exterior surface 1b is not. During normal use of the clothing processing device, the user cannot see the non-exterior surface 1b, but can see the exterior surface 1a. Therefore, the glossiness of the exterior surface 1a of the workbench 1 is required to be higher, while the glossiness of the non-exterior surface 1b is required to be lower.

[0058] 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 components may be different. Therefore, the following description will indicate which component's length, width or thickness is being used.

[0059] Specifically, in the embodiments of the present application, the description is made by taking the example that the length direction of the top plate 11 and the length direction of the side plate 12 are consistent with the front-to-back direction of the workbench 1, the description is made by taking the example that the width direction of the top plate 11 and the thickness direction of the side plate 12 are consistent with the left-right direction of the workbench 1, and the description is made by taking the example that the thickness direction of the top plate 11 and the width direction of the side plate 12 are consistent with the height direction or the top-bottom direction of the workbench 1.

[0060] It should be noted that the front-to-back direction, left-to-right direction, and height direction of the workbench 1 and the workbench cavity are the same as those of the clothing processing equipment. The front side is the front side of the clothing processing equipment when the workbench 1 is installed on the clothing processing equipment.

[0061] 2 and 7 , the non-exterior surface 1 b of the workbench 1 has a plurality of gate forming areas corresponding to the gates on the workbench mold.

[0062] Correspondingly, in the workbench mold, a plurality of gates are provided on the second side wall surface of the workbench cavity.

[0063] Specifically, during injection molding, the melt enters the gate cavity through the gate, and enters the workbench cavity from the gate cavity, filling the workbench cavity. After molding and cooling, the mold is opened to obtain the workbench 1.

[0064] It is understood that after the workbench 1 is ejected from the workbench mold, a portion of the melt at the gate will remain on the workbench 1 and form a gate forming area. The gate forming area can be formed by removing or partially removing the melt remaining at the gate, or by leaving the melt remaining at the gate untreated, without limitation.

[0065] In this embodiment, the gate is arranged on the second side wall surface of the workbench cavity, and the gate molding area is formed on the non-appearance surface 1b of the workbench 1, that is, during the use of the clothing processing equipment, the user cannot see the gate molding area, which is convenient for the appearance performance of the workbench 1.

[0066] It can be understood that there can be two or more gate molding areas, and the gate molding areas are arranged in a one-to-one correspondence with the gates on the workbench mold.

[0067] For example, multiple gates are opened sequentially at pre-set intervals, rather than simultaneously. This means they inject the melt in a sequence. This prevents a single gate from rapidly filling the worktable cavity. Furthermore, opening multiple gates sequentially at pre-set intervals ensures unidirectional melt flow, forming a continuous leading flow front and reducing the likelihood of an unstable flow field.

[0068] It should be noted that the specific duration of the preset time interval can be set according to actual production needs and is not limited in this application.

[0069] The workbench 1 has a symmetrical structure, and a plurality of gate molding areas are symmetrically arranged about a symmetry plane L of the workbench 1 .

[0070] Correspondingly, in the workbench mold, the workbench cavity is a symmetrical structure, and the multiple gates are symmetrically arranged about the symmetry plane of the workbench cavity.

[0071] It is understandable that the symmetry plane of the workbench 1 is consistent with the symmetry plane of the workbench cavity. The symmetry plane L of the workbench 1 passes through the center of the clothing loading port 1c.

[0072] It should be noted that the workbench 1 has a symmetrical structure, which means that the overall outline of the workbench 1 is symmetrical about the symmetry plane L, and some slight differences on the workbench 1 can be ignored.

[0073] It can be understood that the symmetrical arrangement of multiple gate molding areas about the symmetry plane L of the workbench 1 includes two situations: the first is that the gate molding area is set on the symmetry plane L, that is, the distance between the gate molding area and the symmetry plane L is zero, and the number of the gate molding areas can be one; the second is that the distance between the gate molding area and the symmetry plane L is not zero, the number of the gate molding areas is at least two, and they are symmetrically arranged about the symmetry plane L.

[0074] Symmetrically arranged gates can make the flow position and flow speed of the melt on both sides of the symmetry plane L more consistent. In addition, the convergence time of the melts from adjacent gates on both sides of the symmetry plane L can also be the same, thereby facilitating the melt to evenly and quickly fill the workbench cavity, reducing the probability of generating an unstable flow field, and thus reducing the probability of generating flow marks.

[0075] For example, in an embodiment in which a gate molding area is provided on the symmetry plane L, the melt can be first injected into the workbench cavity from the gate on the symmetry plane L, and with the gate on the symmetry plane L as the vertex, dispersedly flow toward both sides of the symmetry plane L. The melt flow rate and temperature on both sides of the symmetry plane L are approximately the same, and the workbench cavity is filled at approximately the same speed. When merging with the melt flowing out of other gates symmetrically arranged about the symmetry plane L, the merging position and merging time can be relatively consistent, thereby increasing the uniformity of the melt flow in the workbench cavity and reducing flow marks.

[0076] The workbench 1 provided in the embodiment of the present application is integrally formed by a spray-free injection molding process, and does not require additional spraying of a metal coating. The molding is convenient, and while the workbench 1 has a metallic appearance, the probability of pollutants generated by spraying is reduced; the workbench 1 is provided with a plurality of gate molding areas, which facilitates the melt to quickly fill the workbench cavity. The workbench 1 has a symmetrical structure, which facilitates increasing the appearance of the workbench 1. Moreover, the plurality of gate molding areas are symmetrically arranged about the symmetry plane L, and the flow position and flow speed of the melt on both sides of the symmetry plane L are relatively consistent, which facilitates the melt to evenly and quickly fill the workbench cavity, reduces the probability of generating an unstable flow field, thereby reducing the probability of generating flow marks, and improving the appearance performance of the workbench 1.

[0077] The specific structure of the workbench 1 is not limited.

[0078] In some embodiments, the workbench 1 includes an annular ring plate 10 , a top plate 11 and side plates 12 .

[0079] The annular ring plate 10 defines the clothing loading port 1c, the appearance surface of the annular ring plate 10 faces the center of the clothing loading port 1c, the top end of the annular ring plate 10 is connected to the top plate 11, and the bottom end of the annular ring plate 10 extends toward the center of the clothing loading port 1c. The side plate 12 is bent downward from the side edge of the top plate 11 along the left and right directions, and at least one gate molding area is set on the symmetry plane L.

[0080] Correspondingly, in the workbench mold, the workbench cavity includes an annular ring plate cavity, a top plate cavity and a side plate cavity. The first side wall surface of the annular ring plate cavity along the thickness direction is used to form the appearance surface of the annular ring plate 10, and the second side wall surface along the thickness direction is used to form the non-appearance surface of the annular ring plate 10. The first side wall surface of the top plate cavity is used to form the appearance surface of the top plate 11, and the second side wall surface of the top plate cavity is used to form the non-appearance surface of the top plate 11. The first side wall surface of the side plate cavity along the thickness direction is used to form the appearance surface of the side plate 12, and the second side wall surface of the side plate cavity along the thickness direction is used to form the non-appearance surface of the side plate 12.

[0081] The annular ring plate cavity is connected to the columnar body, the top end of the annular ring plate cavity is connected to the top plate cavity, the bottom end of the annular ring plate cavity extends toward the center of the columnar body, the side plate cavity bends downward from the side edge of the top plate cavity along the left and right directions, and at least one gate is arranged on the symmetrical surface of the workbench cavity.

[0082] It can be understood that the annular ring plate 10 is substantially in the shape of a circular ring.

[0083] Specifically, the melt can first be injected into the workbench cavity from the gate on the symmetry plane L, and with the gate on the symmetry plane L as the vertex, it disperses and flows toward both sides of the symmetry plane L. The melt flow rate and temperature on both sides of the symmetry plane L are roughly the same, and the workbench cavity is filled at roughly the same speed. When merging with the melt flowing out of other gates arranged symmetrically about the symmetry plane L, the merging position and merging time can be relatively consistent, thereby increasing the uniformity of the melt flow in the workbench cavity and reducing flow marks.

[0084] In some embodiments, the multiple gate molding areas include a first gate molding area 101 and two second gate molding areas 102 symmetrically arranged about the symmetry plane L. The first gate molding area 101 and the second gate molding area 102 are arranged on the non-appearance surface of the annular ring plate 10. The first gate molding area 101 is located on the symmetry plane L. The first gate molding area 101 is arranged in the front area of ​​the annular ring plate 10 facing the workbench 1, and each second gate molding area 102 is arranged at the position of the annular ring plate 10 for connecting with the top plate 11.

[0085] Correspondingly, in the workbench mold, the multiple gates include a first gate and two second gates symmetrically arranged about the symmetry plane L. The first gate and the second gate are arranged on the second side wall surface of the annular ring plate cavity. The first gate is located on the symmetry plane L. The first gate is arranged in the front area of ​​the annular ring plate cavity facing the workbench cavity, and each second gate is arranged at the position of the annular ring plate cavity for connection with the top plate cavity.

[0086] For example, in the projection perpendicular to the height direction of the workbench 1, the first gate molding area 101 is located in front of the second gate molding area 102. During the injection molding process, the first gate is opened first and the two second gates are opened later. The melt first enters the annular ring plate cavity through the first gate, and with the first gate as the vertex, it disperses and flows along the circumference of the annular ring plate cavity. A part of the melt is divided into two streams in the annular ring plate cavity and flows clockwise and counterclockwise along the circumference. The other part of the melt flows through the connection between the annular ring plate cavity and the top plate cavity to the front area of ​​the top plate cavity, and flows toward the second gate cavity on the rear side, and flows to the second gate cavity. The melt in the gate cavity is at the forefront, but the temperature and flow rate gradually decrease. After the first gate is opened for a period of time, the second gate is opened, and the melt flows into the annular ring plate cavity through the second gate cavity. Part of the melt flowing out of the second gate cavity flows in the annular ring plate cavity, and the other part flows toward the top plate cavity. Because the second gate cavity is close to the top plate cavity, the melt flowing out of the second gate cavity has a higher temperature and a faster speed, and can quickly merge with the melt flowing from the first gate to the top plate cavity, thereby forming a continuously leading flow front. In this way, the overall flow rate and temperature of the melt are appropriate, which increases the flow stability of the melt in the top plate cavity.

[0087] It is understood that the non-exterior surface of the annular ring plate 10 is substantially curved, and the non-exterior surface of the top plate 11 is substantially flat. In other words, the first gate molding area 101 and the second gate molding area 102 are both provided on a curved surface.

[0088] It is understandable that on a flat surface, if there is a slight color difference between the color of a certain place and the surrounding colors, it is easy to form a sharp contrast on the flat surface and it is easy to be captured by the naked eye. On a curved surface, the contrast is relatively low. Even if there is a slight color difference between the color of a certain place and the surrounding colors, it can form a visual blind spot and is more difficult to be captured by the naked eye.

[0089] Therefore, in this embodiment, the first gate molding area 101 and the second gate molding area 102 are formed on the curved surface, which is convenient for filling the annular ring plate cavity and the top plate cavity, and can also further form a visual blind spot, thereby reducing the chance of the first gate molding area 101 and the second gate molding area 102 being captured by the user, thereby increasing the product qualification rate of the workbench 1.

[0090] Exemplarily, the portion of the annular ring plate 10 used for connecting with the top plate 11 has an arc-shaped transition, that is, the second forming area 102 is arranged in the arc-shaped area.

[0091] For example, in some embodiments, the first gate molding area 101 and the second gate molding area 102 are located on different circumferences with the center of the clothing loading port 1c as the center. In other words, the length of the line connecting the center of the circle and the center of the first gate molding area 101 is different from the length of the line connecting the center of the circle and the center of the second gate molding area 102. This facilitates uniform filling of all areas of the annular ring plate 10 by the melt.

[0092] Exemplarily, the first gate molding area 101 is disposed close to the bottom edge of the annular ring plate 10 . Thus, the distance between the center of the circle and the first gate molding area 101 is smaller than the distance between the center of the circle and the second gate molding area 102 .

[0093] That is to say, the first gate molding area 101 is arranged close to the bottom edge of the annular ring plate 10, and the second gate molding area 102 is arranged close to the top edge of the annular ring plate 10. While facilitating the melt to fill the annular ring plate cavity, it is also convenient to fill the front area of ​​the top plate cavity. Moreover, the first gate molding area 101 and the second gate molding area 102 are arranged close to the edge of the annular ring plate 10, which can also better hide the first gate molding area 101 and the second gate molding area 102, thereby improving the product qualification rate of the workbench 1.

[0094] The distance between the first gate molding area 101 and the bottom edge of the annular ring plate 10 is not limited.

[0095] Exemplarily, the distance h between the first gate molding area 101 and the bottom edge of the annular ring plate 10 does not exceed half of the height H of the annular ring plate 10 , that is, h≤1 / 2H.

[0096] Exemplarily, in the projection perpendicular to the height direction of the workbench 1, the line connecting the center of the clothing loading port and the center of the first gate molding area 101 is taken as the reference line a, and the angle β between the line L1 connecting the center of the second gate molding area 102 and the center of the clothing loading port 1c and the reference line a does not exceed 45°, that is, 0°≤β≤45°, for example, 0°, 5°, 10°, 14°, 20°, 27°, 30°, 33°, 38°, 40°, 42°, 45°, etc.

[0097] It should be noted that the reference line a is an abstract line, and the reference line a is located on the symmetry plane L.

[0098] That is to say, the second gate molding area 102 can also be closer to the front area of ​​the workbench 1, specifically, close to the front area of ​​the top plate 11, so that the melt can fill the front area of ​​the top plate cavity through the second gate. The top plate cavity only needs to set an additional gate in the rear area, thereby reducing the number of gate molding areas of the workbench 1, and the distance between the first gate molding area 101 and the second gate molding area 102 can also be relatively appropriate, which is convenient for forming a continuous leading flow front during the injection molding process, increasing the flow smoothness of the melt in the annular ring plate cavity, and increasing the appearance reliability of the workbench 1.

[0099] In some embodiments, the multiple gate molding areas include two third gate molding areas 121 symmetrically arranged about the symmetry plane L, each third gate molding area 121 is arranged on the non-appearance surface of the side panel 12, and is arranged at the position of the side panel 12 for connection with the top panel 11, and the third gate molding area 121 is arranged adjacent to the second gate molding area 102.

[0100] Specifically, in the plane projection perpendicular to the height direction of the workbench 1, the second gate molding area 102 can be located in front of the third gate molding area 121. In this way, during the injection molding process, the melt first enters the second gate cavity through the second gate, and then enters the annular ring plate cavity through the second gate cavity. Part of the melt flows in the annular ring plate cavity, and the other part of the melt flows toward the top plate cavity and gradually approaches the side plate cavity. After the second gate is opened for a period of time, the third gate is opened, and the melt flows into the side plate cavity through the third gate cavity. Part of the melt flowing out of the third gate cavity flows in the side plate cavity, and the other part of the melt flows toward the top plate cavity and merges with the melt gradually approaching the side plate cavity. The weld line formed when the melt merges can be hidden at the connection between the side plate cavity and the top plate cavity, thereby increasing the appearance reliability of the workbench 1.

[0101] It can be understood that if no gate is set on the side plate cavity, during the injection molding process, the melt flows into the annular ring plate cavity through the second gate cavity, then flows into the top plate cavity through the annular ring plate cavity, and finally flows into the side plate cavity through the top plate cavity. The temperature and flow rate of the melt will decrease, and the flow smoothness of the melt in the side plate cavity will be reduced. While it is not conducive to quickly filling the side plate cavity, it is also easy to produce an unstable flow field and produce flow marks. Moreover, for the side plate cavity, the melt entering the side plate cavity flows roughly along its length direction, and the side of the side plate cavity away from the top plate cavity in the width direction forms a parting surface, and the flow rate is relatively fast. At the same time, the side of the side plate cavity close to the top plate cavity in the width direction will also have a higher flow rate because it is close to the second gate. In this way, when the melt flows from the second gate to the side plate cavity, the flow rate of the melt in the central area of ​​the side plate cavity in the width direction is slower, 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 flow marks on the appearance surface of the workbench.

[0102] It should be noted that the parting surface is located at the boundary of the side plate cavity away from the top plate cavity. After the melt flows to the parting surface, under the boundary restriction of the parting surface, a large amount of melt flows roughly along the boundary, so that the melt has a higher flow rate at the parting surface.

[0103] Therefore, in this embodiment, the third gate molding area 121 is set on the side panel 12, so that the melt can enter the side panel cavity through the gate on the side panel cavity to quickly fill the side panel cavity. During the injection molding process, the flow rate of the melt in the central area of ​​the side panel cavity along the width direction is improved, and the melt can show a convex trend in the side panel cavity. In this way, the melt has an obvious front flow, and the flow front points of the melt face outward without curling or flipping, and the melt will not converge, ensuring that the appearance has a stable metal texture and increasing the appearance reliability of the workbench 1.

[0104] In some embodiments, the multiple gate molding areas include two fourth gate molding areas 111 symmetrically arranged about the symmetry plane L, each fourth gate molding area 111 is arranged on the rear side of the non-exterior surface of the top plate 11, and is arranged at the position of the top plate for connection with the side plate 12, and the fourth gate molding area 111 is arranged adjacent to the third gate molding area 121.

[0105] Correspondingly, in the workbench 1 mold, the multiple gates include two fourth gates arranged symmetrically about the symmetry plane L, each fourth gate is arranged on the second side wall surface of the top plate cavity, and is arranged at the position of the top plate cavity for connection with the side plate cavity, and the fourth gate is arranged adjacent to the third gate.

[0106] Specifically, in a plane perpendicular to the height direction of the workbench 1 , the third gate molding area 121 is located in front of the fourth gate molding area 111 .

[0107] That is, the melt flowing in from the second gate substantially fills the front region of the top plate cavity, and the melt flowing in from the fourth gate substantially fills the rear region of the top plate cavity.

[0108] In this way, during the injection molding process, the melt first enters the third gate cavity through the third gate, and then enters the side plate cavity through the third gate cavity. Part of the melt flows in the side plate cavity, and the other part of the melt flows to the rear area of ​​the top plate cavity through the connection between the side plate cavity and the top plate cavity, and flows toward the fourth gate cavity on the rear side. The melt flowing to the fourth gate cavity is at the forefront, but the temperature and flow rate gradually decrease. After the third gate is opened for a period of time, the fourth gate is opened, and the melt flows into the top plate cavity through the fourth gate cavity. And it flows in the rear area of ​​the top plate cavity. The melt flowing out of the fourth gate cavity has a higher temperature and a faster speed, and can merge with the melt at the front more quickly, thereby forming a continuously leading flow front. In this way, the overall flow rate and temperature of the melt are appropriate, which increases the flow stability of the melt. Moreover, the weld line formed when the melt flowing from the fourth gate to the side plate cavity and the melt flowing from the third gate to the top plate cavity merge can also be hidden at the connection between the side plate cavity and the top plate cavity, thereby increasing the appearance reliability of the workbench 1.

[0109] In some embodiments, a transition portion 13 is formed at the junction of the top plate 11 and the side plate 12 .

[0110] Correspondingly, in the workbench mold, a transition connection cavity is formed at the junction of the top plate cavity and the side plate cavity.

[0111] That is, the transition portion 13 has an intersection area with both the top plate 11 and the side plate 12. The length direction of the transition portion 13 is the same as the length direction of the side plate 12 and the length direction of the top plate 11.

[0112] Please refer to FIG. 5 . The extending direction of the third gate molding area 121 is perpendicular to the length direction of the transition connecting portion 13 .

[0113] Correspondingly, in the workbench mold, the extension direction of the third gate is perpendicular to the length direction of the transition connection cavity.

[0114] In this embodiment, the extension direction of the third gate molding area 121 is limited by the length direction of the transition connection part 13. The third gate molding area 121 extends roughly along the width direction of the side panel 12 on the non-appearance surface of the side panel 12. In this way, the third gate also extends roughly along the width direction of the side panel 12, so that the melt flowing out of the third gate cavity has a larger flow area in the width direction of the side panel 12, so that the melt can fill the side panel cavity.

[0115] Please refer to FIG. 6 . The extending direction of the fourth gate molding area 111 is perpendicular to the length direction of the transition connecting portion 13 .

[0116] Correspondingly, in the workbench mold, the extension direction of the fourth gate is perpendicular to the length direction of the transition connection cavity.

[0117] In this embodiment, the extension direction of the fourth gate molding area 111 is limited by the length direction of the transition connection part 13. The fourth gate molding area 111 extends roughly along the width direction of the top plate 11 on the non-appearance surface of the top plate 11. In this way, the fourth gate also extends roughly along the width direction of the top plate 11, so that the melt flowing out of the fourth gate cavity has a larger flow area in the width direction of the top plate 11, which facilitates the melt to fill the top plate cavity.

[0118] In some embodiments, the transition connection portion 13 forms a transition surface at the junction of the non-exterior surface of the top plate 11 and the non-exterior surface of the side plate 12 .

[0119] Correspondingly, in the workbench mold, the transition connection cavity forms a transition wall at the junction of the second side wall surface of the top plate cavity and the second side wall surface of the side plate cavity.

[0120] Please refer to Figure 5, the distance d1 between the third gate molding area 121 and the transition surface does not exceed 5mm, that is, d1≤5mm, for example, 5mm, 4.5mm, 4.2mm, 3.9mm, 3.6mm, 3mm, 2.5mm, 2mm, 1.8mm, 1.1mm, 0.8mm, 0.2mm, 0.1mm, etc.

[0121] Correspondingly, in the workbench mold, the distance between the third gate and the transition wall does not exceed 5 mm, for example, 5 mm, 4.5 mm, 4.2 mm, 3.9 mm, 3.6 mm, 3 mm, 2.5 mm, 2 mm, 1.8 mm, 1.1 mm, 0.8 mm, 0.2 mm, 0.1 mm, etc.

[0122] It can be understood that the distance between the third gate molding area 121 and the transition surface is the minimum distance between the third gate molding area 121 and the transition surface along the width direction of the side plate 12 .

[0123] In this embodiment, the third gate molding area 121 is arranged close to the transition surface, that is, the third gate molding area 121 is arranged close to the junction of the non-appearance surface of the top plate 11 and the non-appearance surface of the side plate 12. In this way, when the workbench 1 is molded, when the melt flows through the third gate, on the one hand, the extension direction of the third gate is made to form a certain angle with the flow direction of the melt, thereby reducing flow marks. On the other hand, the third gate is arranged close to the transition surface, and the melt flowing from the second gate to the side plate cavity and the melt flowing from the third gate to the top plate cavity can also converge at the transition surface. In this way, the weld line formed by the convergence of the melt can be hidden at the transition surface, thereby increasing the appearance reliability of the workbench 1.

[0124] Please refer to Figure 6, the distance d2 between the fourth gate molding area 111 and the transition surface does not exceed 5mm, that is, d2≤5mm, for example, 5mm, 4.5mm, 4.2mm, 3.9mm, 3.6mm, 3mm, 2.5mm, 2mm, 1.8mm, 1.1mm, 0.8mm, 0.2mm, 0.1mm, etc.

[0125] Correspondingly, in the workbench mold, the distance between the fourth gate and the transition wall does not exceed 5 mm, for example, 5 mm, 4.5 mm, 4.2 mm, 3.9 mm, 3.6 mm, 3 mm, 2.5 mm, 2 mm, 1.8 mm, 1.1 mm, 0.8 mm, 0.2 mm, 0.1 mm, etc.

[0126] It can be understood that the distance between the fourth gate molding area 111 and the transition surface is the minimum distance between the fourth gate molding area 111 and the transition surface along the width direction of the top plate 11 .

[0127] In this embodiment, the fourth gate molding area 111 is arranged close to the transition surface, that is, the fourth gate molding area 111 is arranged close to the junction of the non-appearance surface of the top plate 11 and the non-appearance surface of the side plate 12. In this way, when the workbench 1 is molded, when the melt flows through the fourth gate, on the one hand, the extension direction of the fourth gate is made to form a certain angle with the flow direction of the melt, thereby reducing flow marks. On the other hand, the fourth gate is arranged close to the transition surface, and the melt flowing from the third gate to the top plate cavity and the melt flowing from the fourth gate to the side plate cavity can also converge at the transition surface. In this way, the weld line formed by the convergence of the melt can be hidden at the transition surface, thereby increasing the appearance reliability of the workbench 1.

[0128] In some embodiments, referring to FIG. 7 , in a plane projection perpendicular to the height direction of the workbench 1 , a dimension W1 of a line connecting the projections of the centers of any two adjacent gate molding areas is 150 mm to 250 mm.

[0129] That is, 150mm≤W1≤250mm, for example, 150mm, 158mm, 160mm, 165mm, 170mm, 180mm, 195mm, 200mm, 215mm, 230mm, 240mm, 250mm, etc.

[0130] Correspondingly, in the workbench mold, the size of the line connecting the projections of the centers of any two adjacent gates is 150mm to 250mm, for example, 150mm, 158mm, 160mm, 165mm, 170mm, 180mm, 195mm, 200mm, 215mm, 230mm, 240mm, 250mm, etc.

[0131] It should be noted that the size of the line connecting the projections of the centers of any two adjacent gate molding areas is the same as the size of the line connecting the projections of the centers of any two adjacent gates.

[0132] For example, the size of the line connecting the projections of the centers of the first gate molding area 101 and the second gate molding area 102 is 150mm to 250mm, the size of the line connecting the projections of the centers of the second gate molding area 102 and the third gate molding area 121 is 150mm to 250mm, and the size of the line connecting the projections of the centers of the third gate molding area 121 and the fourth gate molding area 111 is 150mm to 250mm.

[0133] Taking the example of opening the first and second gates in sequence, the hotter melt enters the workbench cavity through the first gate. During the flow, the melt contacts the cooler inner wall of the workbench cavity. As it moves away from the first gate, the melt temperature decreases and the flow rate slows, making it difficult to fill the entire workbench cavity. However, after the second gate is opened, the melt flowing out of the second gate cavity can increase the overall temperature of the melt in the workbench cavity, making the overall flow rate of the melt more uniform and facilitating the rapid filling of the entire workbench cavity. If the distance between the first and second gates is far, the melt flowing out of the second gate cavity will not be able to effectively drive the melt flowing out of the first gate. If the distance between the first and second gates is close, the workbench needs to be equipped with multiple gates. When the melt flows from the first gate to the second gate cavity, flow marks are easily generated, which reduces the pass rate of the workbench.

[0134] In this embodiment, the size of the line connecting the projections of the centers of any two adjacent gate molding areas is set so that the distance between any two adjacent gates 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 gate molding areas can also be relatively reasonable, thereby reducing flow marks.

[0135] In some embodiments, referring to FIG. 5 , a dimension D1 of the gate molding area along its extension direction is 2 mm (Millimeter) to 20 mm, i.e., 2 mm ≤ D1 ≤ 20 mm, for example, 2 mm, 4 mm, 5 mm, 6 mm, 8 mm, 11 mm, 14 mm, 15 mm, 17 mm, 19 mm, and 20 mm.

[0136] The width D2 of the gate molding area is 0.6 mm to 2 mm, that is, 0.6 mm ≤ D2 ≤ 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, wherein the width direction intersects the extension direction.

[0137] Correspondingly, in the workbench mold, the size of the gate along its extension direction is 2mm to 20mm, for example, 2mm, 4mm, 5mm, 6mm, 8mm, 11mm, 14mm, 15mm, 17mm, 19mm, and 20mm.

[0138] The gate has a width of 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, wherein the width direction intersects the extension direction.

[0139] It should be noted that the extension direction means that the size of the gate molding area or the gate in the extension direction is larger than the size in any other direction, and the width direction means that the size of the gate molding area or the gate in the width direction is smaller than the size in any other direction.

[0140] It can be understood that the width direction of the gate molding area can be perpendicular to the extension direction, so that the gate molding area is roughly rectangular in structure. Of course, the width direction of the gate molding area can also be an acute angle or an obtuse angle with the extension direction, which is not limited here.

[0141] In this embodiment, the size setting of the gate molding area can, on the one hand, make the corresponding gate and gate cavity have appropriate sizes, which is convenient for the melt to enter the workbench cavity through the gate and gate cavity; on the other hand, the size of the gate molding area along other directions can also be smaller, which is convenient for the melt to flow through quickly and reduce the flow marks on the appearance surface 1a of the workbench 1.

[0142] In some embodiments, please refer to Figure 8. In the plane projection perpendicular to the height direction of the workbench 1, the angle α between the extension direction of the projection of the gate molding area and the line L2 connecting the projections of the centers of two adjacent gate molding areas is 30°~150°, that is, 30°≤α≤150°, for example, 30°, 35°, 45°, 60°, 72°, 80°, 90°, 105°, 110°, 120°, 135°, 150°, etc.

[0143] Correspondingly, in the workbench mold, in the plane projection perpendicular to the height direction of the workbench cavity, the angle between the line connecting the projections of the centers of two adjacent gates and the extension direction of the projections of the gates is 30° to 150°, for example, 30°, 35°, 45°, 60°, 72°, 80°, 90°, 105°, 110°, 120°, 135°, 150°, etc.

[0144] It is understood that two adjacent gate forming areas correspond to two adjacent gates on the workbench mold, and the extension direction of the gate forming areas is the same as the extension direction of the gates. The extension direction refers to the dimension of the gate forming area or the gate in the extension direction being greater than the dimension in any other direction.

[0145] The specific analysis of the causes of flow marks is as follows:

[0146] As shown in Figure 9, during the melt flow process, the hotter melt comes into contact with the cooler worktable mold. The hotter melt quickly freezes on the wall of the worktable cavity, forming a thin solidified layer. The orientation of the metal powder in this solidified layer determines the appearance of the worktable. Stable metal powder flow ensures consistent metal powder orientation, resulting in a better appearance. During injection molding, the melt enters the appearance cavity through one of the gates. When it flows through the gate cavity 2000 adjacent to the gate, the flow direction of the melt is divided into two. One part continues to flow along the original flow direction in the appearance cavity 1000, and the other part flows to the gate cavity 2000. If the extension direction of the gate cavity 2000 is parallel to the overall flow direction of the melt, the melt continues to enter the gate cavity 2000, and the melt flowing into the gate cavity 2000 is likely to flow back into the appearance cavity 1000. In this way, the melt flows back from the gate cavity 2000 to the appearance cavity 1000, causing frequent impacts on the appearance surface. Under the continuous flow of the subsequent melt, an unstable flow field is easily formed in the area of ​​the appearance cavity 1000 where the gate cavity 2000 is located. Under the continuous action of the melt pressure, the solidification layer of the appearance surface of the workbench is destroyed, resulting in disordered orientation of the metal particles in the solidification layer of the above-mentioned appearance surface, which is manifested as flow marks on the appearance surface.

[0147] It should be noted that during the injection molding process, after the melt flows from one gate into the exterior cavity, it generally flows in a divergent manner. The overall flow direction of the melt from one gate to the adjacent gate cavity can be understood as the direction of the line connecting the projections of the centers of two adjacent gates in the plane projection of the workbench cavity in the height direction. The extension direction of the gate is parallel to the overall flow direction of the melt, that is, the extension direction of the gate is parallel to the direction of the line connecting the projections of the centers of the two adjacent gates.

[0148] It is understandable that when the extension direction of the gate is parallel to the overall flow direction of the melt, the gate cavity is longer in the extension direction, and the melt will continue to flow back from the gate cavity to the workbench cavity, causing frequent impacts on the appearance surface 1a.

[0149] In this embodiment, the gate extension direction is angled with the direction of the line connecting the projections of the centers of adjacent gates. That is, the gate cavity extension direction is angled with the overall melt flow direction. As a result, when the melt flows through the gate cavity, the gate cavity's dimension along the overall melt flow direction is smaller than its dimension along the extension direction.

[0150] The principle of reducing flow marks in the embodiment of the present application is specifically described as follows:

[0151] Because the extension direction of the gate cavity is not parallel to the overall flow direction of the melt, when the melt flows through the gate cavity, the size of the gate cavity along the overall flow direction of the melt is smaller, and the melt can flow through the gate cavity more quickly, which to a certain extent reduces the probability of the melt flowing back from the gate cavity to the workbench cavity, thereby reducing the flow marks on the appearance surface 1a of the workbench 1.

[0152] The workbench 1 provided in the embodiment of the present application has a non-parallel overall flow direction of the melt from one gate to an adjacent gate cavity during the injection molding process. This reduces the probability of the melt flowing toward the gate cavity backflowing and frequently impacting the exterior surface 1a of the workbench 1, thereby ensuring the stability of the flow field on the exterior surface 1a of the workbench 1 in the region where the gate cavity is located, thereby improving flow marks on the exterior surface 1a of the workbench 1. The angle between the extension direction of the gate molding area and the overall flow direction of the melt is between 30° and 150°. This angle range effectively prevents backflow of the melt toward the gate cavity during the injection molding process, further improving the flow mark phenomenon.

[0153] In some embodiments, the angle between the extension direction of the projection of the gate molding area and the direction of the line connecting the projections of the centers of adjacent gates is 60° to 120°, for example, 60°, 66°, 75°, 80°, 88°, 90°, 92°, 100°, 103°, 111°, 117°, 120°, etc.

[0154] Correspondingly, the angle between the line connecting the projections of the centers of two adjacent gates and the extending direction of the projections of the gates is 60° to 120°.

[0155] In this embodiment, the angle between the gate molding area or the gate and the overall flow direction of the melt is more reasonable, and the gate cavity is smaller in size in the overall flow direction of the melt, which facilitates the melt to flow through the gate cavity quickly, further reducing the probability of the melt flowing into the gate cavity flowing back to the workbench cavity, thereby reducing flow marks.

[0156] It can be understood that the annular ring plate 10, the top plate 11, and the side plate 10 can be set to the same thickness, that is, the wall thickness of the annular ring plate 10, the top plate 11, and the side plate 10 at any position is equal; on the one hand, it can ensure the structural strength of the annular ring plate 10, the top plate 11, and the side plate 10, and enable the melt to quickly fill the annular ring plate cavity, the top plate cavity, and the side plate cavity; on the other hand, it can also simplify the structure of the workbench mold.

[0157] Of course, the annular ring plate 10, the top plate 11 and the side plates 10 can also be arranged with variable wall thicknesses.

[0158] Taking the annular ring plate 10 with a variable wall thickness setting as an example, the annular ring plate 10 has a constant thickness area and a variable thickness area. The constant thickness area extends along the circumferential direction of the annular ring plate 10, and the variable thickness area is the other area of ​​the annular ring plate 10 except the constant thickness area. The gate molding area of ​​the annular ring plate 10 is set in the constant thickness area, and the maximum thickness of the annular ring plate 10 in the variable thickness area is less than the thickness of the annular ring plate 10 in the constant thickness area.

[0159] It can be understood that when the melt is injected into the workbench mold, the melt contacts the cold wall of the annular ring plate cavity and the temperature drops sharply, and a solidification layer is produced. The flow area of ​​the annular ring plate cavity decreases with the increase of the thickness of the solidification layer. The fluidity of the melt is proportional to the cube of the thickness of the annular ring plate cavity. Therefore, the larger the cavity thickness of the annular ring plate 10, the smaller the flow resistance of the melt, the better the fluidity, and the faster the flow rate.

[0160] Therefore, during the melt flow process, the melt flows more easily and faster in the equal thickness area. The melt tends to be convex in the equal thickness area, and there is obvious front flow in the equal thickness area. The actual flow direction of the melt at each point on the front surface is along the outward direction perpendicular to the tangent of the front surface. Therefore, the flow direction of each point on the front surface is divergent and will not intersect, so that curling and flipping will not occur. This is beneficial to avoid curling and flipping of the melt in the equal thickness area and the melt in the variable thickness area at the front to a certain extent, further ensuring the stability of the melt material flow, thereby reducing the flow marks of the annular ring plate 10 at the corresponding positions of the equal thickness area and the variable thickness area, and increasing the qualified rate of the workbench 1.

[0161] In the description of the present 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 the present 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 the present application and features of different embodiments or examples without contradiction.

[0162] The foregoing description is merely a preferred embodiment of the present application and is 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 material of the workbench includes a matrix and metal powder distributed in the matrix. The workbench is an integrally injection-molded part. The workbench has a clothing input opening. One side of the workbench in the thickness direction has an appearance surface, and the other side in the thickness direction has a non-appearance surface. The non-appearance surface of the workbench has a plurality of gate forming areas corresponding to the gates on the workbench mold. The workbench is a symmetric structure, and the plurality of gate forming areas are symmetrically arranged with respect to the symmetry plane of the workbench.

2. The workbench according to claim 1, wherein, The workbench includes an annular ring plate, a top plate, and a side plate. The annular ring plate defines the clothing input opening. The appearance surface of the annular ring plate faces the center of the clothing input opening. The top end of the annular ring plate is connected to the top plate. The bottom end of the annular ring plate extends towards the center of the clothing input opening. The side plate bends downwards from the side edges of the top plate in the left-right direction. At least one of the gate forming areas is arranged on the symmetry plane.

3. The workbench according to claim 2, wherein, The plurality of gate forming areas include a first gate forming area and two second gate forming areas symmetrically arranged with respect to the symmetry plane. The first gate forming area and the two second gate forming areas are arranged on the non-appearance surface of the annular ring plate. The first gate forming area is located on the symmetry plane. The first gate forming area is arranged in the area of the annular ring plate facing the front side of the workbench. Each of the second gate forming areas is arranged at the part of the annular ring plate for connecting with the top plate.

4. The workbench according to claim 3, wherein, Taking the center of the clothing input opening as the center of the circle, the first gate forming area and the second gate forming areas are located on different circumferences. The distance between the first gate forming area and the bottom edge of the annular ring plate does not exceed half of the height of the annular ring plate.

5. The workbench according to claim 3, wherein, In the projection perpendicular to the height direction of the workbench, taking the connection line between the center of the clothing input opening and the center of the first gate forming area as the reference line, the included angle between the connection line between the center of the second gate forming area and the center of the clothing input opening and the reference line does not exceed 45°.

6. The workbench according to any one of claims 3-5, wherein, The plurality of gate forming areas include two third gate forming areas symmetrically arranged with respect to the symmetry plane. Each of the third gate forming areas is arranged on the non-appearance surface of the side plate and at the part of the side plate for connecting with the top plate, and the third gate forming area is arranged adjacent to the second gate forming area.

7. The workbench according to claim 6, wherein, The plurality of gate forming areas include two fourth gate forming areas symmetrically arranged with respect to the symmetry plane. Each of the fourth gate forming areas is arranged on the non-appearance surface of the top plate and at the part of the top plate for connecting with the side plate, and the fourth gate forming area is arranged adjacent to the third gate forming area.

8. The workbench according to claim 7, wherein, A transition connection part is formed at the junction of the top plate and the side plate; The extending direction of the third gate forming area is perpendicular to the length direction of the transition connection part, and / or the extending direction of the fourth gate forming area is perpendicular to the length direction of the transition connection part.

9. The workbench according to claim 8, wherein, The transition connection part forms a transition surface at the junction of the non-appearance surface of the top plate and the non-appearance surface of the side plate. The distance between the third gate forming area and the transition surface does not exceed 5 mm; the distance between the fourth gate forming area and the transition surface does not exceed 5 mm.

10. The workbench according to any one of claims 1-9, wherein, In the planar projection in the height direction perpendicular to the workbench, the dimension of the connection line of the projections of the centers of any two adjacent gate forming areas is 150 mm to 250 mm.

11. The workbench according to any one of claims 1-9, wherein, The length of the gate forming area along its extending direction is 2 mm to 20 mm; and / or the width of the gate forming area is 0.6 mm to 2 mm, wherein the width direction intersects the extending direction.

12. A laundry treatment device, wherein, It includes the workbench according to any one of claims 1-11.

13. A workbench mold for forming the workbench according to any one of claims 1-11, wherein, The workbench mold includes a workbench core, the workbench core has a workbench cavity, the workbench cavity has a columnar body for forming the clothing inlet, the first side wall surface of the workbench cavity in the thickness direction is used for forming the appearance surface of the workbench, and the second side wall surface of the workbench cavity in the thickness direction is used for forming the non-appearance surface of the workbench; a plurality of gates are arranged on the second side wall surface of the workbench cavity. The workbench cavity is a symmetric structure, and a plurality of the gates are symmetrically arranged with respect to the symmetry plane of the workbench cavity.

14. The workbench mold according to claim 13, wherein, The workbench cavity includes an annular ring plate cavity, a top plate cavity and a side plate cavity. The annular ring plate cavity is connected to the columnar body. One side wall surface of the annular ring plate cavity for forming the appearance surface of the annular ring plate faces the center of the columnar body. The top end of the annular ring plate cavity is connected to the top plate cavity. The bottom end of the annular ring plate cavity extends towards the center of the columnar body. The side plate cavity is bent downward from the side edges in the left and right directions of the top plate cavity, and at least one of the gates is arranged on the symmetry plane of the annular ring plate cavity.

Images