Workbench, clothes processing equipment and workbench mold

Abstract

The embodiment of the invention provides a working table, clothes processing equipment and a working table mold, the material of the working table comprises a base body and metal powder distributed in the base body, the working table is an integrated injection molding part, the working table is of a symmetrical structure, the non-appearance surface of the working table is provided with a plurality of pouring gate forming areas corresponding to pouring gates on the working table mold, and the pouring gate forming areas correspond to the pouring gates on the working table mold. And the plurality of sprue forming areas are symmetrically arranged relative to the symmetric surface of the workbench. According to the working table provided by the embodiment of the invention, the working table is integrally formed by adopting a spraying-free injection molding process, a metal coating does not need to be additionally sprayed, forming is convenient, and the probability that pollutants are generated due to spraying is reduced while the working table has a metal appearance; the workbench is of a symmetrical structure, the appearance attractiveness of the workbench can be improved conveniently, the multiple sprue forming areas are symmetrically arranged relative to the symmetrical face, a workbench cavity can be evenly and rapidly filled with melt, the probability of generating an unstable flow field is reduced, the probability of generating flow marks is reduced, and the appearance performance of the workbench is improved.

Description

Technical Field

[0001] This application relates to the field of injection molding technology, and particularly to a workbench, a laundry treatment device, and a workbench mold. Background Art

[0002] Taking the application of the workbench in a laundry treatment device as an example, in the related art, after the workbench is injection molded, flow mark defects are likely to appear on the appearance surface. When the flow mark defects are obvious, they will affect the appearance of the product. Therefore, the qualified rate of the workbench is low, the scrap rate is high, and the manufacturing cost is high. Summary of the Invention

[0003] In view of this, the embodiments of this application are expected to provide a workbench, a laundry treatment device, and a workbench mold to reduce the flow mark defects on the appearance surface of the workbench and improve the qualified rate of the workbench.

[0004] The embodiments of this application provide a workbench for a laundry treatment device. The material of the workbench includes a base body and metal powder distributed in the base body. The workbench is an integrally injection molded part. The workbench has a laundry 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.

[0005] 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.

[0006] In some embodiments, the workbench includes an annular ring plate, a top plate, and a side plate. The annular ring plate defines the laundry input opening. The appearance surface of the annular ring plate faces the center of the laundry 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 laundry input opening. The side plate bends downward from the side edges of the top plate in the left-right direction. At least one of the gate forming areas is provided on the symmetry plane.

[0007] In some embodiments, the plurality of gate forming areas include a first gate forming area and two second gate forming areas that are symmetrically arranged with respect to the symmetry plane. The first gate forming area and the two second gate forming areas are provided 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 provided in the area of the annular ring plate facing the front side of the workbench. The two second gate forming areas are provided at the part of the annular ring plate for connecting with the top plate.

[0008] In some embodiments, with the center of the clothing inlet as the center of a circle, the first gate forming area and the second gate forming area are located on different circumferences, and 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.

[0009] In some embodiments, in the projection in the height direction perpendicular to the workbench, with the connection line between the center of the clothing inlet 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 inlet and the reference line does not exceed 45°.

[0010] In some embodiments, the multiple gate forming areas include two third gate forming areas symmetrically arranged about the symmetry plane. Each third gate forming area 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.

[0011] In some embodiments, the multiple gate forming areas include two fourth gate forming areas symmetrically arranged about the symmetry plane. Each fourth gate forming area 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.

[0012] In some embodiments, a transition connection part is formed at the junction of the top plate and the side plate;

[0013] 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.

[0014] In some embodiments, 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;

[0015] 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.

[0016] In some embodiments, in the plane 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.

[0017] In some embodiments, 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 with the extending direction.

[0018] An embodiment of the present application provides a clothing processing device, including the workbench described in any embodiment of the present application.

[0019] 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 includes a workbench core. The workbench core has a workbench cavity. The workbench cavity has a columnar body for molding the clothing inlet. A first side wall surface of the workbench cavity in the thickness direction is used to mold the appearance surface of the workbench, and a second side wall surface of the workbench cavity in the thickness direction is used to mold the non-appearance surface of the workbench; a plurality of gates are provided on the second side wall surface of the workbench cavity.

[0020] The workbench cavity is a symmetric structure, and the plurality of gates are symmetrically arranged with respect to the symmetry plane of the workbench cavity.

[0021] 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. A side wall surface of the annular ring plate cavity for molding 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, and the bottom end of the annular ring plate cavity extends in a direction close to the center of the columnar body. The side plate cavity bends downward from the side edges of the top plate cavity in the left-right direction, and at least one gate is provided on the symmetry plane of the annular ring plate cavity.

[0022] The workbench provided by the embodiment of the present application is integrally formed by an injection molding process without spraying, without an additional metal coating spray. It is convenient to mold. While making the workbench have a metallic appearance, it reduces the probability of pollutants generated by spraying; the workbench is provided with a plurality of gate forming areas, which is convenient for the melt to quickly fill the workbench cavity. The workbench is a symmetric structure, which is convenient for increasing the aesthetic appearance of the workbench. Moreover, the plurality of gate forming areas are symmetrically arranged with respect to the symmetry plane, and the flow positions and flow velocities of the melt on both sides of the symmetry plane are relatively consistent, which is convenient for the melt to uniformly and quickly fill the workbench cavity, reducing 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

[0023] Figure 1 Structural schematic diagram of the workbench according to an embodiment of the present application;

[0024] Figure 2 Structural schematic diagram of the workbench according to an embodiment of the present application from another perspective;

[0025] Figure 3 is Figure 2 Enlarged schematic diagram of part A in

[0026] Figure 4 For Figure 2 An enlarged schematic view of part B in

[0027] Figure 5 For Figure 2 An enlarged schematic view of part C in

[0028] Figure 6 For Figure 2 An enlarged schematic view of part D in

[0029] Figure 7 A schematic structural view of the workbench according to an embodiment of the present application from another perspective;

[0030] Figure 8 For Figure 7 An enlarged schematic view of part E in

[0031] Figure 9 A schematic view of the flow of the melt in the appearance cavity and the gate cavity extending generally along the melt flow direction in the related art. 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.

[0032] Explanation of reference numerals

[0033] 1000 - Appearance cavity; 2000 - Gate cavity;

[0034] 1 - Workbench; 1a - Appearance surface; 1b - Non - appearance surface; 1c - Clothing inlet;

[0035] 10 - Annular ring plate; 101 - First gate forming area; 102 - Second gate forming area; 11 - Top plate; 111 - Fourth gate forming area; 12 - Side plate; 121 - Third gate forming area; 13 - Transition connection part. Detailed implementation manners

[0036] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be 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 the present invention and are not used to limit the present invention.

[0037] In the various specific technical features described in the specific embodiments, they can be combined in any suitable manner without contradiction. For example, different embodiments and technical solutions can be formed by combining different specific technical features. To avoid unnecessary repetition, various possible combination methods of the specific technical features in the present invention will not be described separately.

[0038] In the following description, the terms "first", "second", etc. only distinguish different objects and do not indicate any identity or relationship between the objects. It should be understood that the orientation descriptions such as "above", "below", "top", and "bottom" are all in the normal use state, and the "left" and "right" directions represent the left and right directions shown in the specific corresponding schematic diagram, which may or may not be the left and right directions in the normal use state.

[0039] It should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element. "Plurality" means greater than or equal to two.

[0040] 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 related art, the manufacturing process of the plastic parts is mostly injection molding + spraying process, that is, metal powder is sprayed on the outer surface of the injection molded blank, and the sprayed plastic parts have a gorgeous metallic appearance effect. However, the spraying process has disadvantages such as large pollution, high cost, low qualification rate, and non-recyclability after scrapping.

[0041] To solve the deficiencies of the spraying process, spray-free thermoplastic engineering plastics have emerged. Using spray-free injection molding can give the product a metallic appearance effect, thus eliminating the spraying process and avoiding the emission of pollutants during spraying. However, whether it is the spraying injection molding process or the spray-free injection molding process, flow marks are likely to occur. Taking the workbench manufactured by 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 metal powder is likely to be unevenly distributed during the flow of the melt in the workbench cavity, and some parts have a darker color, forming flow marks visually, resulting in flow mark defects on the workbench, making the appearance quality of the spray-free workbench unable to meet the product appearance requirements, leading to a low finished product rate of the workbench, material waste, and high production cost. Therefore, it is difficult for existing workbenches with high-quality appearance requirements to adopt the spray-free injection molding process.

[0042] Please refer to Figures 1 to 8 , an embodiment of the present application provides a workbench 1.

[0043] The application scenario of the workbench 1 is not limited. In the embodiment of the present application, the workbench 1 is described by taking its application in a clothing treatment device as an example.

[0044] An embodiment of the present application provides a laundry treatment device, including a workbench 1 according to any embodiment of the present application.

[0045] The specific type of the laundry treatment device is not limited, and it can be a pulsator washing machine, a washing and drying integrated machine, etc., which are not limited here.

[0046] The workbench 1 is an integrally injection-molded part.

[0047] That is to say, the workbench 1 is integrally formed by injection molding. The integrally formed workbench 1 is convenient to form and simple to manufacture, without redundant assembly parts and connection processes, which is convenient for assembling with other structures of the laundry treatment device and improves the assembly efficiency of the laundry treatment device.

[0048] Exemplarily, the workbench 1 can be a non-spraying integrally injection-molded part. For example, a melt composed of a matrix containing metal powder is injection-molded to form the workbench 1 of the embodiment of the present application. That is to say, the material of the workbench 1 includes a matrix and metal powder distributed in the matrix. The workbench 1 formed by using a matrix containing metal powder has a metallic appearance and does not require an additional metal coating, that is, the workbench 1 is a non-spraying plastic part.

[0049] For the convenience of description, the following takes the example of a melt composed of a matrix containing metal powder being injection-molded through a workbench mold to form the workbench 1 for illustration.

[0050] The type of the metal powder is not limited. Exemplarily, the metal powder includes but is not limited to copper, silver, and / or aluminum, etc.

[0051] It should be noted that the metal powder refers to the form in which the metal is in a granular state. In the present application, the particle size is not limited.

[0052] The type of the matrix is not limited. Exemplarily, the matrix includes but is not limited to resin, etc.

[0053] Please refer to Figure 1 and Figure 2 , the workbench 1 has a laundry inlet 1c. Specifically, laundry can be put into the laundry treatment device or taken out from the laundry treatment device through the laundry inlet 1c.

[0054] Exemplarily, the laundry treatment device includes a box body and a cylinder assembly. The workbench 1 is arranged at the top end of the box body. The cylinder assembly has a laundry treatment cavity. The top side of the cylinder assembly has an opening. The laundry to be cleaned can be put into the laundry treatment cavity from the top side through the laundry inlet 1c and the opening. The cleaned laundry can also be taken out from the laundry treatment cavity through the opening and the laundry inlet 1c.

[0055] To facilitate the description of the workbench 1 according to the embodiments of the present application, the embodiments of the present application further provide a workbench mold for forming the workbench 1 according to any embodiment of the present application. The workbench mold includes a workbench core, the workbench core has a workbench cavity, and the workbench cavity has a columnar body for forming the clothing inlet 1c.

[0056] Please refer to Figure 1 and Figure 2 , one side of the workbench 1 in the thickness direction has an appearance surface 1a, and the other side in the thickness direction has a non-appearance surface 1b.

[0057] Correspondingly, in the workbench mold, the first side wall surface of the workbench cavity in 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 in the thickness direction is used to form the non-appearance surface 1b of the workbench 1.

[0058] It should be noted that the appearance surface 1a is exposed outside the clothing treatment device, and the non-appearance surface 1b is not exposed outside the clothing treatment device. During the normal use of the clothing treatment device, the user cannot see the non-appearance surface 1b, but can see the appearance surface 1a. Therefore, the glossiness requirement for the appearance surface 1a of the workbench 1 is relatively high, and the glossiness requirement for the non-appearance surface 1b is relatively low.

[0059] It should be noted that the dimensions of different components in three directions in the same absolute coordinate system are different. Generally, according to the dimensions of the object extending in three directions, the length, width and thickness of the object are determined, and length > width > thickness. Therefore, the length, width and thickness directions of corresponding different components may be different. Therefore, in the following description, it will be explained which component's length, width or thickness it is.

[0060] Specifically, in the embodiments of the present application, taking the length direction of the top plate 11, the length direction of the side plate 12 being consistent with the front-back direction of the workbench 1 as an example for description, the width direction of the top plate 11, the thickness direction of the side plate 12 being consistent with the left-right direction of the workbench 1 as an example for description, and the thickness direction of the top plate 11, the width direction of the side plate 12 being consistent with the height direction or the top-bottom direction of the workbench 1 as an example for description.

[0061] It should be noted that the front-back direction, left-right direction, and height direction of the workbench 1, the front-back direction and left-right direction of the workbench cavity are the same as the front-back direction, left-right direction, and height direction of the clothing treatment device. The front side is the front side of the clothing treatment device when the workbench 1 is installed on the clothing treatment device.

[0062] Please refer to Figure 2 and Figure 7 , the non-appearance surface 1b of the workbench 1 has a plurality of gate forming areas corresponding to the gates on the workbench mold.

[0063] Correspondingly, in the workbench mold, a plurality of gates are provided on the second side wall surface of the workbench cavity.

[0064] Specifically, during injection molding, the melt enters the gate cavity through the gate, then enters the workbench cavity from the gate cavity, and fills the workbench cavity. After cooling and solidification, the mold is opened to obtain the workbench 1.

[0065] It can be understood that after the workbench 1 is demolded from the workbench mold, a part 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 cutting or partially cutting the melt remaining at the gate, or can be formed without processing the melt remaining at the gate, which is not limited herein.

[0066] In this embodiment, the gate is provided on the second side wall surface of the workbench cavity, and the gate forming area is formed on the non-appearance surface 1b of the workbench 1. That is, during the use of the laundry treatment device, the user cannot see the gate forming area, which is beneficial to the appearance performance of the workbench 1.

[0067] It can be understood that there can be two or more gate forming areas, and the gate forming areas are arranged in one-to-one correspondence with the gates on the workbench mold.

[0068] Exemplarily, the plurality of gates are not opened simultaneously but are opened sequentially at a preset time interval. That is to say, the plurality of gates do not inject glue simultaneously but have a sequence. On the one hand, using a plurality of gates can avoid the difficulty of quickly filling the workbench cavity with a single gate. On the other hand, the sequential opening of the plurality of gates at a preset time interval can ensure the unidirectional flow of the melt, form a continuously leading flow front, and reduce the probability of an unstable flow field.

[0069] It should be noted that the specific duration of the preset time interval can be set according to actual production requirements, which is not limited in this application.

[0070] The workbench 1 has a symmetric structure, and the plurality of gate forming areas are symmetrically arranged with respect to the symmetry plane L of the workbench 1.

[0071] Correspondingly, in the workbench mold, the workbench cavity has a symmetric structure, and the plurality of gates are symmetrically arranged with respect to the symmetry plane of the workbench cavity.

[0072] It can be understood that the symmetry plane of the workbench 1 coincides with the symmetry plane of the workbench cavity. The symmetry plane L of the workbench 1 passes through the center of the laundry input opening 1c.

[0073] It should be noted that the workbench 1 having a symmetric structure means that the overall contour of the workbench 1 is symmetric with respect to the symmetry plane L, and some minor differences on the workbench 1 can be ignored.

[0074] It can be understood that the symmetric arrangement of multiple gate forming areas with respect to the symmetry plane L of the workbench 1 includes two cases: First, the gate forming area is arranged on the symmetry plane L, that is, the distance between the gate forming area and the symmetry plane L is zero, and the number of such gate forming areas can be one; Second, the distance between the gate forming area and the symmetry plane L is not zero, the number of such gate forming areas is at least two, and they are symmetrically arranged with respect to the symmetry plane L.

[0075] The symmetrically arranged gates can make the flow positions and flow velocities of the melt on both sides of the symmetry plane L relatively consistent. Moreover, the confluence times of the melt from adjacent gates on both sides of the symmetry plane L can also be the same, facilitating the melt to uniformly and quickly fill the workbench cavity, reducing the probability of generating an unstable flow field, and thus reducing the probability of generating flow marks.

[0076] Exemplarily, in the embodiment where the gate forming area is arranged on the symmetry plane L, 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, disperse and flow towards both sides of the symmetry plane L. The melt flow rates and temperatures on both sides of the symmetry plane L are roughly the same, and they fill the workbench cavity at roughly the same speed. When converging with the melt flowing out from other gates symmetrically arranged with respect to the symmetry plane L, the convergence positions and convergence times can be relatively consistent, increasing the uniformity of the melt flow in the workbench cavity and reducing flow marks.

[0077] The workbench 1 provided in the embodiment of the present application is integrally formed by an injection molding process without spraying, eliminating the need for an additional metal coating spray. It is convenient for molding, while giving the workbench 1 a metallic appearance, reducing the probability of generating pollutants due to spraying; The workbench 1 is provided with multiple gate forming areas, facilitating the melt to quickly fill the workbench cavity. The workbench 1 has a symmetric structure, facilitating the improvement of the aesthetic appearance of the workbench 1. Moreover, the multiple gate forming areas are symmetrically arranged with respect to the symmetry plane L, and the flow positions and flow velocities of the melt on both sides of the symmetry plane L are relatively consistent, facilitating the melt to uniformly and quickly fill the workbench cavity, reducing the probability of generating an unstable flow field, and thus reducing the probability of generating flow marks, improving the appearance performance of the workbench 1.

[0078] The specific structure of the workbench 1 is not limited.

[0079] In some embodiments, the workbench 1 includes an annular ring plate 10, a top plate 11, and a side plate 12.

[0080] The annular ring plate 10 defines a clothing delivery opening 1c. The outer surface of the annular ring plate 10 faces the center of the clothing delivery opening 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 towards the center of the clothing delivery opening 1c. The side plate 12 bends downward from the side edges of the top plate 11 in the left-right direction, and at least one gate forming area is arranged on the symmetry plane L.

[0081] 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 in the thickness direction is used to form the appearance surface of the annular ring plate 10, and the second side wall surface in 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 in 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 in the thickness direction is used to form the non-appearance surface of the side plate 12.

[0082] 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 towards the center of the columnar body. The side plate cavity bends downward from the side edge in the left-right direction of the top plate cavity. At least one gate is arranged on the symmetry plane of the workbench cavity.

[0083] It can be understood that the annular ring plate 10 is generally in a circular ring structure.

[0084] 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 towards 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 the melt flowing out from other gates symmetrically arranged with respect to the symmetry plane L converges, the convergence position and convergence time can be relatively consistent, increasing the uniformity of the melt flow in the workbench cavity and reducing flow marks.

[0085] In some embodiments, the multiple gate forming areas include a first gate forming area 101 and two second gate forming areas 102 symmetrically arranged with respect to the symmetry plane L. The first gate forming area 101 and the second gate forming areas 102 are arranged on the non-appearance surface of the annular ring plate 10. The first gate forming area 101 is located on the symmetry plane L, and the first gate forming area 101 is arranged in the area of the annular ring plate 10 facing the front side of the workbench 1. Each second gate forming area 102 is arranged at the position where the annular ring plate 10 is used to connect to the top plate 11.

[0086] Correspondingly, in the workbench mold, the multiple gates include a first gate and two second gates symmetrically arranged with respect to the symmetry plane L. The first gate and the second gates are arranged on the second side wall surface of the annular ring plate cavity. The first gate is located on the symmetry plane L, and the first gate is arranged in the area of the annular ring plate cavity facing the front side of the workbench cavity. Each second gate is arranged at the position where the annular ring plate cavity is used to connect to the top plate cavity.

[0087] Exemplarily, in the projection in the height direction perpendicular to the workbench 1, the first gate forming area 101 is located on the front side of the second gate forming area 102. During the injection molding process, the first gate is opened first, and then the two second gates are opened. 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 circumferentially along the annular ring plate cavity. A part of the melt flows in two streams circumferentially clockwise and circumferentially counterclockwise in the annular ring plate cavity, and another 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 towards the second gate cavity at the rear. The melt flowing towards the second gate cavity is at the front edge, but its 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. A part of the melt flowing out of the second gate cavity flows in the annular ring plate cavity, and another part flows towards 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 converge with the melt flowing from the first gate to the top plate cavity more quickly, thus forming a continuously leading flow front. In this way, the overall flow rate and temperature of the melt are appropriate, and the flow stability of the melt in the top plate cavity is increased.

[0088] It can be understood that the non-appearance surface of the annular ring plate 10 is generally curved, and the non-appearance surface of the top plate 11 is generally flat. That is to say, both the first gate forming area 101 and the second gate forming area 102 are arranged on the curved surface.

[0089] It can be understood that on a plane, if there is a slight color difference between a certain area and the colors around it, it is easy to form a distinct contrast on the plane and is easily captured by the naked eye. However, on a curved surface, the contrast is relatively low. Even if there is a slight color difference between the color of that area and the surrounding colors, it can form a visual blind area and is relatively difficult to be captured by the naked eye.

[0090] Therefore, in this embodiment, the first gate forming area 101 and the second gate forming area 102 are formed on the curved surface. While facilitating the filling of the annular ring plate cavity and the top plate cavity, it can further form a visual blind area, reduce the probability of the first gate forming area 101 and the second gate forming area 102 being captured by users, and thus increase the product qualification rate of the workbench 1.

[0091] Exemplarily, the part of the annular ring plate 10 for connecting with the top plate 11 has an arc transition, that is to say, the second forming area 102 is arranged in the arc area.

[0092] Exemplarily, in some embodiments, with the center of the clothing delivery opening 1c as the center of the circle, the first gate forming area 101 and the second gate forming area 102 are located on different circumferences. That is, the dimension of the line connecting the center of the circle and the center of the first gate forming area 101 is different from the dimension of the line connecting the center of the circle and the center of the second gate forming area 102. In this way, it is convenient for the melt to uniformly fill each area of the annular ring plate 10.

[0093] Exemplarily, the first gate forming area 101 is arranged close to the bottom edge of the annular ring plate 10. In this way, the distance between the center of the circle and the first gate forming area 101 is less than the distance between the center of the circle and the second gate forming area 102.

[0094] That is to say, the first gate forming area 101 is arranged close to the bottom edge of the annular ring plate 10, and the second gate forming 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 forming area 101 and the second gate forming area 102 are arranged close to the edge of the annular ring plate 10, which can also better hide the first gate forming area 101 and the second gate forming area 102, and improve the product qualification rate of the workbench 1.

[0095] The distance between the first gate forming area 101 and the bottom edge of the annular ring plate 10 is not limited.

[0096] Exemplarily, the distance h between the first gate forming 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.

[0097] Exemplarily, in the projection in the height direction perpendicular to the workbench 1, with the line connecting the center of the clothing delivery opening and the center of the first gate forming area 101 as the reference line a, the included angle β between the line L1 connecting the center of the second gate forming area 102 and the center of the clothing delivery opening 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.

[0098] 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.

[0099] That is to say, the second gate forming area 102 can also be relatively close to the front side area of the workbench 1. Specifically, it is close to the front side area of the top plate 11, which is convenient for the melt to fill the front side area of the top plate cavity through the second gate. The top plate cavity only needs to be provided with an additional gate in the rear side area, reducing the number of gate forming areas on the workbench 1. Moreover, the distance between the first gate forming area 101 and the second gate forming area 102 can be relatively appropriate, facilitating the formation of a continuously leading flow front during the injection molding process, increasing the flow smoothness of the melt in the annular ring plate cavity, and enhancing the appearance reliability of the workbench 1.

[0100] In some embodiments, the multiple gate forming areas include two third gate forming areas 121 symmetrically arranged about the symmetry plane L. Each third gate forming area 121 is disposed on the non-appearance surface of the side plate 12 and at the position where the side plate 12 is used to connect to the top plate 11, and the third gate forming area 121 is arranged adjacent to the second gate forming area 102.

[0101] Specifically, in the planar projection perpendicular to the height direction of the workbench 1, the second gate forming area 102 can be located in front of the third gate forming area 121. In this way, during the injection molding process, the melt first enters the second gate cavity through the second gate, 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 towards 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 towards the top plate cavity and converges with the melt gradually approaching the side plate cavity. The weld line formed when the melts converge can be hidden at the connection between the side plate cavity and the top plate cavity, thereby enhancing the appearance reliability of the workbench 1.

[0102] It can be understood that if no gate is provided 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 into the top plate cavity through the annular ring plate cavity, and finally 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 decrease. This not only makes it difficult to quickly fill the side plate cavity but also easily generates an unstable flow field and flow marks. Moreover, for the side plate cavity, the melt entering the side plate cavity generally flows along its length direction, and the side of the side plate cavity away from the top plate cavity along the width direction forms a parting surface, where the flow rate is relatively fast. At the same time, the side of the side plate cavity close to the top plate cavity along the width direction will also have a relatively high flow rate because it is close to the second gate. Thus, when the melt flows from the second gate to the side plate cavity, in the central region of the side plate cavity in the width direction, the flow rate of the melt is slower, manifested as a situation where the surface of the flow front is partially sunken inward, that is, the flow direction of some points of the flow front is towards 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.

[0103] 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 generally flows along the boundary, so that at the parting surface, the melt has a relatively large flow rate.

[0104] Therefore, in this embodiment, due to the setting of the third gate forming area 121 on the side plate 12, the melt can enter the side plate cavity through the gate on the side plate cavity to quickly fill the side plate cavity. During the injection molding process, the flow rate of the melt in the central region of the side plate cavity in the width direction is increased, and the melt in the side plate cavity can show a convex trend. In this way, there is an obvious front flow of the melt, and each point of the flow front of the melt faces outward, without curling and flipping, and the melt does not converge, ensuring a stable metallic texture on the appearance and increasing the appearance reliability of the workbench 1.

[0105] In some embodiments, the multiple gate forming areas include two fourth gate forming areas 111 symmetrically arranged about the symmetry plane L. Each fourth gate forming area 111 is arranged at the rear side of the non-appearance surface of the top plate 11 and at the part where the top plate is used to connect with the side plate 12, and the fourth gate forming area 111 is arranged adjacent to the third gate forming area 121.

[0106] Correspondingly, in the workbench 1 mold, the multiple gates include two fourth gates symmetrically arranged about the symmetry plane L. Each fourth gate is arranged on the second side wall surface of the top plate cavity and at the part where the top plate cavity is used to connect with the side plate cavity, and the fourth gate is arranged adjacent to the third gate.

[0107] Specifically, in a plane perpendicular to the height direction of the workbench 1, the third gate forming area 121 is located on the front side of the fourth gate forming area 111.

[0108] That is to say, the melt flowing in from the second gate roughly fills the front side area of the top plate cavity, and the melt flowing in from the fourth gate roughly fills the rear side area of the top plate cavity.

[0109] In this way, during the injection molding process, the melt first enters the third gate cavity through the third gate, enters the side plate cavity through the third gate cavity. Part of the melt flows in the side plate cavity, and another part of the melt flows through the connection between the side plate cavity and the top plate cavity to the rear area of the top plate cavity and flows towards the rear fourth gate cavity. The melt flowing towards the fourth gate cavity is at the front edge, but its temperature and flow rate gradually decrease. After the third gate is opened for a period of time, the fourth gate is opened. The melt flows into the top plate cavity through the fourth gate cavity and 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 converge with the melt at the front edge more quickly, thus forming a continuously leading flow front. In this way, the overall flow rate and temperature of the melt are appropriate, increasing 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 converge 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.

[0110] In some embodiments, a transition connection portion 13 is formed at the junction of the top plate 11 and the side plate 12.

[0111] Correspondingly, in the workbench mold, a transition connection cavity is formed at the junction of the top plate cavity and the side plate cavity.

[0112] That is to say, the transition connection portion 13 has an intersection area with both the top plate 11 and the side plate 12. The length direction of the transition connection portion 13 is the same as the length direction of the side plate 12 and the length direction of the top plate 11.

[0113] Please refer to Figure 5 , the extending direction of the third gate forming area 121 is perpendicular to the length direction of the transition connection portion 13.

[0114] Correspondingly, in the workbench mold, the extending direction of the third gate is perpendicular to the length direction of the transition connection cavity.

[0115] In this embodiment, the extending direction of the third gate forming area 121 is defined by the length direction of the transition connecting portion 13. The third gate forming area 121 extends substantially along the width direction of the side plate 12 on the non-appearance surface of the side plate 12. In this way, the third gate also extends substantially along the width direction of the side plate 12, facilitating a larger flow area for the melt flowing out of the third gate cavity in the width direction of the side plate 12 and facilitating the melt to fill the side plate cavity.

[0116] Please refer to Figure 6 , the extending direction of the fourth gate forming area 111 is perpendicular to the length direction of the transition connecting portion 13.

[0117] Correspondingly, in the workbench mold, the extending direction of the fourth gate is perpendicular to the length direction of the transition connecting cavity.

[0118] In this embodiment, the extending direction of the fourth gate forming area 111 is defined by the length direction of the transition connecting portion 13. The fourth gate forming area 111 extends substantially 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 substantially along the width direction of the top plate 11, facilitating a larger flow area for the melt flowing out of the fourth gate cavity in the width direction of the top plate 11 and facilitating the melt to fill the top plate cavity.

[0119] In some embodiments, the transition connecting portion 13 forms a transition surface at the junction of the non-appearance surface of the top plate 11 and the non-appearance surface of the side plate 12.

[0120] Correspondingly, in the workbench mold, the transition connecting 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.

[0121] Please refer to Figure 5 , the distance d1 between the third gate forming area 121 and the transition surface does not exceed 5 mm, that is, d1 ≤ 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] 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.

[0123] It can be understood that the distance between the third gate forming area 121 and the transition surface is the minimum distance between the third gate forming area 121 and the transition surface along the width direction of the side plate 12.

[0124] In this embodiment, the third gate forming area 121 is arranged close to the transition surface. That is to say, the third gate forming 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 formed, when the melt flows through the third gate, on the one hand, the extension direction of the third gate forms a certain angle with the flow direction of the melt, reducing flow marks. On the other hand, since the third gate is arranged close to the transition surface, 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, increasing the appearance reliability of the workbench 1.

[0125] Please refer to Figure 6 , the distance d2 between the fourth gate forming area 111 and the transition surface does not exceed 5 mm, that is, d2 ≤ 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] 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.

[0127] It can be understood that the distance between the fourth gate forming area 111 and the transition surface is the minimum distance between the fourth gate forming area 111 and the transition surface along the width direction of the top plate 11.

[0128] In this embodiment, the fourth gate forming area 111 is arranged close to the transition surface. That is to say, the fourth gate forming 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 formed, when the melt flows through the fourth gate, on the one hand, the extension direction of the fourth gate forms a certain angle with the flow direction of the melt, reducing flow marks. On the other hand, since the fourth gate is arranged close to the transition surface, 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, increasing the appearance reliability of the workbench 1.

[0129] In some embodiments, please refer to Figure 7, in the planar projection in the height direction perpendicular to the workbench 1, the dimension W1 of the connection line of the projections of the centers of any two adjacent gate forming areas is 150 mm to 250 mm. That is, 150 mm ≤ W1 ≤ 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.

[0130] Correspondingly, in the workbench mold, the dimension of the connection line of the projections of the centers of any two adjacent gates is 150 mm to 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.

[0131] It should be noted that the dimension of the connection line of the projections of the centers of any two adjacent gate forming areas is the same as the dimension of the connection line of the projections of the centers of any two adjacent gates.

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

[0133] Taking the sequential opening of the first gate and the second gate as an example, the hotter melt enters the workbench cavity through the first gate. During the flow process, the melt contacts the inner wall of the cooler workbench cavity. Along the direction away from the first gate, the temperature of the melt becomes lower and the flow rate becomes slower, which is not conducive to filling the entire workbench cavity. After the second gate is opened, the melt flowing out from the second gate cavity can increase the overall temperature of the melt in the workbench cavity, so that the overall flow rate of the melt is relatively uniform, facilitating the rapid filling of the entire workbench cavity. If the distance between the first gate and the second gate is far, the melt flowing out from the second gate cavity is difficult to play a good driving role for the melt flowing out from the first gate. If the distance between the first gate and the second gate is close, the workbench needs to be provided with multiple gates. When the melt flows from the first gate to the second gate cavity, flow marks are likely to occur, reducing the qualification rate of the workbench.

[0134] In this embodiment, the dimension setting of the connection line of the projections of the centers of any two adjacent gate forming areas can ensure that the distance between any two adjacent gates is neither too large nor 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, facilitating the rapid filling of the entire workbench cavity. On the other hand, the number of gate forming areas can also be relatively reasonable, reducing flow marks.

[0135] In some embodiments, please refer to Figure 5 , the dimension D1 of the gate forming area along its extending direction is 2 mm (Millimeter) to 20 mm, that is, 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, 20 mm.

[0136] The width D2 of the gate forming 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, 2 mm. Among them, the width direction intersects with the extending direction.

[0137] Correspondingly, in the workbench mold, the dimension of the gate along its extending 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, 20 mm.

[0138] The width of the gate 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, 2 mm. Among them, the width direction intersects with the extending direction.

[0139] It should be noted that the extending direction means that the dimension of the gate forming area or the gate in the extending direction is greater than the dimension in any other direction, and the width direction means that the dimension of the gate forming area or the gate in the width direction is less than the dimension in any other direction.

[0140] It can be understood that the width direction of the gate forming area can be perpendicular to the extending direction. In this way, the gate forming area is generally in a rectangular structure. Of course, the width direction of the gate forming area can also form an acute angle or an obtuse angle with the extending direction, which is not limited here.

[0141] In this embodiment, the size setting of the gate forming area can, on the one hand, enable the corresponding gate and gate cavity to have appropriate sizes, facilitating the melt to enter the workbench cavity through the gate and gate cavity. On the other hand, the size of the gate forming area in other directions can also be relatively small, facilitating the melt to flow through quickly and reducing the flow marks on the appearance surface 1a of the workbench 1.

[0142] In some embodiments, please refer to Figure 8 , in the planar projection perpendicular to the height direction of the workbench 1, the included angle α between the extension direction of the projection of the gate forming area and the connection line L2 of the projections of the centers of two adjacent gate forming areas is 30° to 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 planar projection perpendicular to the height direction of the workbench cavity, the included angle between the connection line of the projections of the centers of two adjacent gates and the extension direction of the projection of the gate is 30° to 150°. For example, 30°, 35°, 45°, 60°, 72°, 80°, 90°, 105°, 110°, 120°, 135°, 150°, etc.

[0144] It can be understood that two adjacent gate forming areas correspond to two adjacent gates on the workbench mold, and the extension direction of the gate forming area is the same as that of the gate. The so-called extension direction means that the size of the gate forming area or the gate in the extension direction is larger than the size in any other direction.

[0145] The specific analysis of the reasons for the generation of flow marks is as follows:

[0146] Please refer to Figure 9, during the flow of the melt, the hotter melt contacts the colder workbench mold, and the hotter melt quickly freezes on the cavity wall surface of the workbench cavity to form a relatively thin solidified layer. The orientation of the metal powder in the solidified layer determines the quality of the workbench appearance. The steadily flowing metal powder can form a consistent orientation of the metal powder and obtain a better appearance. During injection molding, the melt enters the appearance cavity through one of the gates. When flowing through the gate cavity 2000 adjacent to this gate, the flow direction of the melt divides into two parts. One part continues to flow in the appearance cavity 1000 along the original flow direction, and the other part flows into 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 continuously enters the gate cavity 2000, and the melt flowing into the gate cavity 2000 is likely to flow back to the appearance cavity 1000. In this way, the melt flowing back from the gate cavity 2000 to the appearance cavity 1000 causes frequent impacts on the appearance surface. Under the continuous flow of the subsequent melt, an unstable flow field is likely to form in the area of the appearance cavity 1000 where the gate cavity 2000 is located. Under the continuous action of the melt pressure, the solidified layer on the appearance surface of the workbench is damaged, resulting in the disordered orientation of the metal particles in the solidified 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 into the appearance cavity from one of the gates, it generally flows in a divergent manner. And the overall flow direction of the melt from one gate to the adjacent gate cavity can be understood as the direction of the connection line of the projections of the centers of two adjacent gates in the plane projection in the height direction of the workbench cavity. 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 connection line of the projections of the centers of two adjacent gates.

[0148] It can be understood that when the extension direction of the gate is parallel to the overall flow direction of the melt, the dimension of the gate cavity along the extension direction is relatively long, and the melt will continuously flow back from the gate cavity to the workbench cavity and cause frequent impacts on the appearance surface 1a.

[0149] In this embodiment, the extension direction of the gate is set at an angle with the direction of the connection line of the projections of the centers of the adjacent gates, that is, the extension direction of the gate cavity is set at an angle with the overall flow direction of the melt. In this way, when the melt flows through the gate cavity, the dimension of the gate cavity along the overall flow direction of the melt is smaller than the dimension along the extension direction.

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

[0151] Since the extending 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 dimension of the gate cavity along the overall flow direction of the melt is small, and the melt can flow through the gate cavity relatively quickly, which reduces the probability of the melt flowing back from the gate cavity to the workbench cavity to a certain extent, thereby reducing the flow marks on the appearance surface 1a of the workbench 1.

[0152] In the workbench 1 provided by the embodiment of the present application, during the injection molding process, when the melt flows from one gate to the adjacent gate cavity, the overall flow direction of the melt is not parallel to the extending direction of the gate forming area, which can reduce the probability of the melt flowing back to the adjacent gate cavity and frequently impacting the appearance surface 1a of the workbench 1, ensuring the stability of the flow field in the area where the appearance surface 1a of the workbench 1 is located in the gate cavity, thereby improving the flow marks on the appearance surface 1a of the workbench 1. The included angle between the extending direction of the gate forming area and the overall flow direction of the melt is between 30° and 150°, and this angle range can effectively prevent the melt flowing to the gate cavity from flowing back during the injection molding process, further improving the flow mark phenomenon.

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

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

[0155] In this embodiment, the included angle between the gate forming area or the gate and the overall flow direction of the melt is more reasonable, and the dimension of the gate cavity in the overall flow direction of the melt is smaller, which is convenient for the melt to flow through the gate cavity quickly, further reducing the probability of the melt flowing back from the gate cavity to the workbench cavity and reducing the flow marks.

[0156] It can be understood that the annular ring plate 10, the top plate 11, and the side plate 10 can be provided with equal thickness, that is, the wall thicknesses of the annular ring plate 10, the top plate 11, and the side plate 10 are equal at any position; 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, and 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 plate 10 can also be provided with variable wall thicknesses.

[0158] Taking the annular ring plate 10 with variable wall thickness as an example, the annular ring plate 10 has an equal-thickness region and a variable-thickness region. The equal-thickness region extends along the circumferential direction of the annular ring plate 10, and the variable-thickness region is the other region of the annular ring plate 10 except the equal-thickness region. The gate forming area of the annular ring plate 10 is arranged in the equal-thickness region, and the maximum thickness of the annular ring plate 10 in the variable-thickness region is less than the thickness of the annular ring plate 10 in the equal-thickness region.

[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, generating a solidified layer. The flow area of the annular ring plate cavity decreases as the thickness of the solidified layer increases. The fluidity of the melt is proportional to the cube of the thickness of the annular ring plate cavity. Therefore, the larger the thickness of the cavity 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 is more likely to flow and has a faster flow rate in the equal-thickness region. The melt has a tendency to protrude forward in the equal-thickness region, and there is an obvious front flow in the equal-thickness region. The actual flow direction of each point on the front surface is along the direction perpendicular to the tangent of the front surface and outward. Therefore, the flow directions of each point on the front surface are divergent and will not converge, so that curling and flipping will not occur. This is beneficial to avoiding curling and flipping of the melt at the front between the melt in the equal-thickness region and the melt in the variable-thickness region to a certain extent, further ensuring the stability of the melt material flow, thereby reducing flow marks at the corresponding positions of the annular ring plate 10 in the equal-thickness region and the variable-thickness region, and increasing the qualified rate of the workbench 1.

[0161] In the description of the present application, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection 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 expressions of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine different embodiments or examples described in the present application and the features of different embodiments or examples.

[0162] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A workbench for a laundry treatment device, characterized in that, The material of the workbench includes a base body and metal powder distributed in the base body. 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, characterized in that, 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, characterized in that, 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 second gate forming area is arranged at the part of the annular ring plate for connecting with the top plate.

4. The workbench according to claim 3, characterized in that, 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 claim 3, characterized in that The plurality of gate forming areas include two third gate forming areas symmetrically arranged with respect to the symmetry plane. Each third gate forming area 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 fourth gate forming area 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, characterized in that, 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 claim 1, characterized in that, 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 claim 1, characterized in that, 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 with the extending direction.

12. A laundry treatment device, characterized in that, Including the workbench according to any one of claims 1-11.

13. A workbench mold for molding the workbench according to any one of claims 1-11, characterized in that, The workbench mold includes a workbench mold core, the workbench mold 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, characterized in that, 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 downwards from the side edges in the left-right direction 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