Handles, garment processing equipment and handle molds

Abstract

This invention discloses a handle, a garment processing device, and a handle mold. The handle is an integrally injection-molded part, and includes a connecting plate and at least one retaining rib. One surface of the connecting plate in the thickness direction is the visible surface, and the other surface is the non-visible surface. The retaining rib is disposed on the non-visible surface of the connecting plate, and the retaining rib extends in a wavy shape along a first direction. The handle according to this invention can reduce flow marks, improve the product qualification rate of the handle, and meet the user's needs.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology, and in particular to a handle, a garment processing device, and a handle mold. Background Technology

[0002] Generally, household appliances such as front-loading washing machines use handles to open and close the dispenser box, which meets both functional and aesthetic requirements.

[0003] In related technologies, flow marks are prone to appear on the product during injection molding of handles. When heavy flow marks appear on the surface of the handle, it not only leads to a low product qualification rate and high cost, but also fails to meet the user's needs. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a handle with a high pass rate and good product quality.

[0005] The present invention also proposes a garment processing device having the above-mentioned handle.

[0006] The present invention also proposes a handle mold for forming the above-mentioned handle.

[0007] According to a first aspect of the present invention, the handle is an integrally injection molded part, and the handle includes: a connecting plate, one side surface of the connecting plate in the thickness direction is an external surface and the other side surface is a non-external surface; at least one retaining rib, the retaining rib is disposed on the non-external surface of the connecting plate, and the retaining rib extends in a wavy shape along a first direction.

[0008] According to an embodiment of the present invention, the handle is provided with a wavy rib extending along a first direction, which facilitates the flexibility of the position of the gate forming area on the handle. At the same time, it facilitates the presence of a non-zero angle between the line connecting the gate forming area and at least a portion of the position on the gate forming rib and the tangent direction of the corresponding position on the gate forming rib in the first direction. This reduces the flow at the root of the gate forming rib, reduces flow marks at the connection between the gate forming rib and the connecting plate, and further reduces flow marks on the surface of the connecting plate, thereby improving product quality.

[0009] According to some embodiments of the present invention, the retaining rib has crests and troughs, the distance between the crests and the troughs in the first direction is L, the distance between the crests and the troughs in the second direction is H, 1.5≤L / H≤5, and the second direction is perpendicular to the first direction.

[0010] According to some embodiments of the present invention, the connecting plate has a plurality of edge portions connected end to end, and the connection between two adjacent edge portions defines a corner portion, one of which is a preset corner portion. The preset corner portion is provided with a first gate forming area on the non-appearance surface of the connecting plate, which is suitable for corresponding to the first gate of the handle mold. The retaining rib is located on one side of the first gate forming area in the first direction, and in the second direction, the first gate forming area and the retaining rib are misaligned. The second direction is perpendicular to the first direction.

[0011] According to some embodiments of the present invention, the connecting plate includes a first plate, the retaining rib is disposed on a non-visual surface of the first plate, and the first plate defines the preset corner portion. In the second direction, from one end of the first plate adjacent to the preset corner portion to one end of the first plate away from the preset corner portion, the wall thickness of the first plate gradually decreases.

[0012] According to some embodiments of the present invention, the maximum wall thickness of the first plate ranges from 2.5 mm to 3.2 mm; and / or, the minimum wall thickness of the first plate ranges from 1.8 mm to 2.5 mm.

[0013] According to some embodiments of the present invention, in the second direction, the difference between the wall thickness of the end of the first plate adjacent to the preset corner portion and the wall thickness of the end of the first plate away from the preset corner portion ranges from 0.5 mm to 0.8 mm.

[0014] According to some embodiments of the present invention, the wall thickness of the first plate ranges from 2.2 mm to 2.8 mm.

[0015] According to some embodiments of the present invention, the handle further includes: a first connecting rib, the first connecting rib being disposed on the non-visual surface of the connecting plate, the first connecting rib extending along the first direction and located on one side of the first gate forming area in the first direction, and in a second direction, the first gate forming area and the first connecting rib being offset.

[0016] According to some embodiments of the present invention, the handle further includes: a buckle, the buckle being connected to the end of the first connecting rib away from the connecting plate, the end of the first connecting rib away from the buckle having a thinned portion, the thinned portion being disposed opposite to the buckle.

[0017] According to some embodiments of the present invention, there are multiple first connecting ribs, and the multiple first connecting ribs are spaced apart along the second direction. The handle further includes at least one second connecting rib, which is disposed on the non-visual surface of the connecting plate and is connected between two adjacent first connecting ribs. The second connecting rib extends in a direction inclined relative to the second direction.

[0018] According to some embodiments of the present invention, the angle between the extension direction of the second connecting rib and the first direction is α, 30°≤α≤75°; and / or, the second connecting rib includes a first body portion and a first connecting portion, the first connecting portion being connected between the connecting plate and the first body portion, and the thickness of the first connecting portion being greater than or equal to 1 mm.

[0019] According to some embodiments of the present invention, the handle further includes: a third connecting rib, the third connecting rib being disposed on the non-exterior surface of the connecting plate, and the third connecting rib being connected to one end of the length of the first connecting rib, the third connecting rib extending along the second direction, the third connecting rib including a second body portion and a second connecting portion, the second connecting portion being connected between the connecting plate and the second body portion, the thickness of the second connecting portion being in the range of 2Δh to 3Δh, where Δh is the thickness of the solidified layer formed by the melt contacting the cavity of the handle mold during the injection molding process of the handle.

[0020] According to some embodiments of the present invention, the ratio of the height of the second connecting portion to the height of the third connecting rib is in the range of 1 / 8 to 1 / 10.

[0021] According to some embodiments of the present invention, the handle includes: a side plate, one end of which is connected to the outer edge of the connecting plate in the first direction and to the preset corner portion, and the surface of the side plate facing away from the connecting plate in the thickness direction is the appearance surface.

[0022] According to some embodiments of the present invention, the connecting plate includes a first plate and a second plate, the retaining rib is disposed on the non-exterior surface of the first plate, and the first plate defines the preset corner portion, the second plate is connected to one end of the first plate in a second direction, and the second plate is disposed opposite to the preset corner portion, the second plate forms a retaining through hole, the retaining rib is disposed adjacent to the retaining through hole, and the retaining rib is opposite to the retaining through hole, and the second direction is perpendicular to the first direction.

[0023] According to some embodiments of the present invention, the connecting plate further includes a third plate, one end of which is connected to the end of the second plate away from the first plate, and the non-exterior surface of the third plate is provided with a second gate forming area adapted to correspond to the second gate of the handle mold.

[0024] According to some embodiments of the present invention, the handle further includes: a limiting structure disposed on the non-appearance surface of the connecting plate, the limiting structure including a third body part and a third connecting part, the third connecting part being connected between the third body part and the connecting plate, the thickness of the third connecting part being in the range of 2Δh to 3Δh, where Δh is the thickness of the solidified layer formed by the melt contacting the cavity of the handle mold during the injection molding process of the handle.

[0025] According to some embodiments of the present invention, the handle is made of a paint-free material.

[0026] A garment handling apparatus according to a second aspect of the present invention includes a handle according to the first aspect of the present invention described above.

[0027] According to the clothing processing equipment of the present invention, by adopting the above-described handle, the product qualification rate can be improved, the cost can be reduced, and the user's needs can be met.

[0028] According to a third aspect embodiment of the present invention, a handle mold for forming a handle, wherein the handle is a handle according to the first aspect embodiment of the present invention described above, the handle mold includes: a handle core, the handle core having a cavity, the cavity including a first cavity and at least one second cavity, the first cavity having a first wall surface and a second wall surface, the first wall surface being used to form the outer surface of the connecting plate, the second wall surface being used to form the non-outer surface of the connecting plate, the second cavity communicating with one side of the second wall surface, and the second cavity being used to form the retaining rib, the second cavity extending in a wavy shape along the first direction.

[0029] The handle mold for forming handles according to embodiments of the present invention can reduce flow marks on the handle and improve product quality.

[0030] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0032] Figure 1 This is a schematic diagram of a handle according to an embodiment of the present invention;

[0033] Figure 2 yes Figure 1 An enlarged view of the circled area at point A shown in the diagram;

[0034] Figure 3 yes Figure 1The sectional view shown in the FF direction;

[0035] Figure 4 yes Figure 3 An enlarged view of the circled area at point C shown in the diagram;

[0036] Figure 5 yes Figure 1 Another schematic diagram of the handle shown;

[0037] Figure 6 yes Figure 5 An enlarged view of the circled area at point D shown;

[0038] Figure 7 yes Figure 1 Another schematic diagram of the handle shown;

[0039] Figure 8 yes Figure 1 A schematic diagram of the retaining ribs shown;

[0040] Figure 9 yes Figure 1 Another schematic diagram of the handle shown;

[0041] Figure 10 yes Figure 9 An enlarged view of the circled area at point E shown;

[0042] Figure 11 This is a schematic diagram of the flow of material melt forming the second connecting rib according to an embodiment of the present invention;

[0043] Figure 12 This is a schematic diagram of the flow of a material melt according to an embodiment of the present invention;

[0044] Figure 13 This is a schematic diagram of the structure of a handle mold according to an embodiment of the present invention;

[0045] Figure 14 yes Figure 13 A schematic diagram of the handle core of the handle mold shown;

[0046] Figure 15 yes Figure 13 An exploded view of the handle core shown;

[0047] Figure 16 yes Figure 13 Another exploded view of the handle mold shown.

[0048] Figure label:

[0049] 10-Handle

[0050] 1-Connecting plate, 11-First plate, 14-Preset corner, 15-First gate forming area

[0051] 12-Second plate, 121-Holding part, 13-Third plate, 131-Second gate forming area,

[0052] 2-First connecting rib, 21-Notch, 22-Snap fastener, 23-Thinned section,

[0053] 3-Second connecting rib, 31-First body part, 32-First connecting part,

[0054] 4-Third connecting rib, 41-Second body part, 42-Second connecting part,

[0055] 5-Side plate, 7-Holding rib, 9-Limiting structure, 91-Third body part, 92-Third connecting part

[0056] 100 - Handle mold, 101 - Handle mold core, 101c - First gate, 101d - Second gate. Detailed Implementation

[0057] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0058] Clothing handling equipment, such as drum washing machines, is equipped with handles to allow users to operate the equipment or its components. For example, a washing machine may include a dispenser for holding detergent, fabric softener, etc., with a handle to allow the user to pull open or close the dispenser. This could be a pull-out design, where the user can extend or retract the dispenser using the handle. Thus, the handle fulfills both functional and aesthetic requirements.

[0059] Generally, handles are manufactured using injection molding followed by spraying. While spray-coated handles have a striking metallic appearance, the process suffers from drawbacks such as high pollution, high cost, low yield, and non-recyclability after disposal, severely impacting the environment and the health of production workers, thus contradicting the concept of green manufacturing. To address these shortcomings, paint-free thermoplastic engineering materials have emerged. Paint-free injection molding can achieve a metallic finish, eliminating the need for spraying, reducing production costs, and avoiding pollutant emissions during the spraying process.

[0060] Whether the handle is made using paint-free materials or through injection molding and spraying, for materials with poor flowability, especially paint-free materials containing metal particles, the presence of metal particles and other substances in the paint-free materials can cause uneven distribution of metal particles when the material encounters obstacles during the injection molding process. As a result, when the product is injection molded, light scattering occurs under illumination, and flow lines are visually formed on the product, leading to flow mark defects. When flow lines appear on the surface of the product, it not only results in a low product yield but also fails to meet the user's needs.

[0061] In the following description, an example is given of a paint-free material containing metal particles. That is, the handle can be a paint-free material component, comprising a resin matrix and metal particles distributed within the resin matrix. Optionally, the metal particles are copper, aluminum, or silver.

[0062] The following is for reference. Figures 1-16 The present invention describes a handle 10, a garment handling device, and a handle mold 100 according to embodiments of the present invention. The garment handling device may be a washing machine, a dryer, or a washer-dryer combo, but is not limited thereto.

[0063] like Figures 1-10 As shown, the handle 10 is an integral injection molded part. The handle mold 100 is used to mold the handle 10. The integral structure can not only ensure the structural and performance stability of the handle 10, but also facilitate molding and manufacturing. It also eliminates unnecessary assembly parts and connection processes, ensuring the reliability of the handle 10 connection. Furthermore, the integral structure has higher overall strength and stability, is easier to assemble, and has a longer service life.

[0064] like Figures 1-3 , Figure 5 , Figure 9 As shown, the handle 10 includes a connecting plate 1. One surface of the connecting plate 1 in the thickness direction is the visible surface, and the other surface in the thickness direction is the non-visual surface. That is, the visible surface and the non-visual surface of the connecting plate 1 are arranged opposite to each other in the thickness direction of the connecting plate 1. When the visible surface is located on the outside of the connecting plate 1, the non-visual surface is located on the inside of the connecting plate 1. Here, the visible surface means that when the handle 10 is applied in the garment processing equipment, the visible surface is exposed; the non-visual surface means that when the handle 10 is applied in the garment processing equipment, the non-visual surface is not exposed.

[0065] like Figure 1 and Figure 8As shown, the handle 10 also includes at least one retaining rib 7, which is located on the non-exterior surface of the first plate 11. When the user needs to operate the handle 10, such as by pulling the handle 10, the user will contact the retaining rib 7 with his / her hand. The retaining rib 7 can provide a certain feel and friction between the user and the hand, making the operation of the handle 10 easier and more convenient, thus facilitating the user to operate the handle 10 stably.

[0066] It is understood that the handle 10 has a gate forming area (e.g., the first gate forming area 15 described below). For example, after the handle 10 is injection molded using the handle mold 100 and the handle 10 exits the mold, a portion of the material at the first gate 101c of the handle mold 100 will remain on the handle 10 and form a handle gate forming part. The first gate forming area 15 is the area where this handle gate forming part is located. It is understood that the handle 10 can be further processed to remove or partially remove the handle gate forming part. Of course, the handle gate forming part of the handle 10 can also be left unprocessed, that is, the handle gate forming part can be retained on the handle 10. There is no specific limitation on this, and it can be set according to the actual needs of production.

[0067] Wherein, the retaining rib 7 extends in a wavy shape along the first direction, which at least to a certain extent reduces the flow lines on the surface of the retaining rib 7 and the flow lines at the joint between the retaining rib 7 and the connecting plate 1, while also improving the tactile feel of the retaining rib 7 and further enhancing the operating feel. Moreover, it provides a certain degree of flexibility in the setting position of the gate forming area of ​​the handle 10, making it easy to ensure that there is a non-zero included angle between the line connecting the gate forming area and at least a portion of the retaining rib 7 and the tangent direction of the corresponding position on the retaining rib 7 in the first direction. Thus, during the injection molding process of the handle 10, the material passes through the handle mold 100 and the first gate forming area 1 The material flows into the cavity of the handle mold 100 through the first gate 101c corresponding to 5 and gradually diffuses. The approximate flow direction of the material flowing through a certain position of the retaining rib 7 has a non-zero angle with the tangent direction at the corresponding position of the retaining rib 7. Therefore, during the forming process of the handle 10, it is beneficial to reduce the flow marks of the retaining rib 7 and the flow at the root of the retaining rib 7, thereby reducing the flow marks at the connection between the retaining rib 7 and the connecting plate 1. This reduces the flow marks on the appearance surface of the connecting plate 1, and thus helps to avoid flow mark defects on the appearance surface of the handle 10, especially the appearance surface of the connecting plate 1, thereby improving the product yield and meeting the user's needs.

[0068] According to the embodiment of the present invention, the handle 10 is provided with a wavy shape extending along the first direction by setting the retaining rib 7, which facilitates the flexibility of the position of the gate forming area on the handle 10. At the same time, it facilitates the presence of a non-zero angle between the line connecting the gate forming area and at least part of the retaining rib 7 and the tangent direction of the corresponding position on the retaining rib 7 in the first direction, thereby reducing the flow at the root of the retaining rib 7, reducing the flow marks at the connection between the retaining rib 7 and the connecting plate 1, and further reducing the flow marks on the appearance surface of the connecting plate 1, thus improving product quality.

[0069] like Figures 13-16 As shown, the handle mold 100 for molding the handle 10 according to an embodiment of the present invention includes a handle mold core 101. The handle mold core 101 has a cavity, including a first cavity. The first cavity is used for injection molding the connecting plate 1. The first cavity has a first wall surface and a second wall surface. The first wall surface is used for molding the outer surface of the connecting plate 1, and the second wall surface is used for molding the non-outer surface of the connecting plate 1.

[0070] The cavity also includes at least one second cavity for injection molding the retaining rib 7. The second cavity is connected to the side where the second wall surface is located, that is, the retaining rib 7 formed after injection molding is connected to the non-exterior surface of the connecting plate 1. The second cavity extends in a wavy shape along the first direction so that the retaining rib 7 formed after injection molding extends in a wavy shape along the first direction. The handle 10 is a handle 10 according to the first aspect embodiment of the present invention.

[0071] Therefore, according to the embodiment of the present invention, the handle mold for forming the handle 10, by setting the second cavity to extend in a wavy shape along the first direction, helps to reduce the flow marks of the retaining rib 7 and the flow marks at the root of the retaining rib 7, thereby reducing the flow marks on the outer surface of the connecting plate 1, thus making it easier to avoid the flow mark defects that easily occur in the handle 10 and improving the product yield.

[0072] The following explanation, based on the structure of the handle mold 100, explains the reason for the reduction of flow lines from a theoretical perspective.

[0073] Specifically, during injection molding, the hotter molten material enters the first cavity through the first gate 101c and then flows into the second cavity until both cavities are filled. During this flow, the molten material comes into contact with the cooler walls of both cavities, rapidly freezing to form a thin solidified layer. The arrangement of metal particles within this solidified layer determines the quality and appearance of the paint-free product. Stable flow of the molten material ensures consistent metal particle orientation, resulting in a superior product and a better appearance.

[0074] When the molten material flows out from the first gate 101c, it diffuses outwards from the first gate 101c as the starting point. That is, the flow direction of the molten material is outwards from the first gate 101c as the center. When the molten material flows through the second cavity, during the injection molding process, the approximate flow direction of the molten material at a certain position in the second cavity has a non-zero angle with the tangent direction at the corresponding position in the second cavity. At this time, the molten material enters the second cavity more from the thickness side, and the distance the molten material travels through the second cavity in the flow direction will be much smaller than the length of the second cavity. The cavity path is relatively shorter, which facilitates the rapid filling of the second cavity by the melt, allowing it to cool quickly on the wall of the second cavity to form a solidified layer. This weakens the unstable flow field in the second cavity, making the orientation of the solidified metal powder in the second cavity more consistent. At the same time, in the direction of melt flow, the leading edge of the melt is less likely to converge. For example, the melt on both sides of the thickness of the second cavity will not converge in the second cavity, thereby improving the stability of the melt flow, weakening or even eliminating the unstable flow field formed in the second cavity, reducing or avoiding flow marks at the root of the retaining rib 7, reducing flow marks on the outer surface of the connecting plate 1, and thus making it easier to avoid flow mark defects on the handle 10.

[0075] It is understandable that the thickness direction of the second cavity is perpendicular to the length direction of the second cavity. The length direction of the second cavity can be understood as the direction of extension of the centerline of the second cavity.

[0076] Optionally, such as Figure 1 , Figure 8 As shown, multiple retaining ribs 7 are provided and distributed parallel to each other along the second direction on the connecting plate 1 to form a retaining part on the non-exterior surface of the connecting plate 1, facilitating the opening of the handle 10. This increases the coverage area of ​​the retaining ribs 7, making it easier for the user to access the retaining ribs 7 and obtain greater friction and a better feel, making the process of opening the handle 10 more comfortable and convenient. The second direction is perpendicular to the first direction. Of course, there can also be only one retaining rib 7.

[0077] According to some embodiments of the present invention, such as Figure 8As shown, the retaining rib 7 has crests and troughs. The distance between the crests and troughs in the first direction is L, and the distance between the crests and troughs in the second direction is H, where 1.5 ≤ L / H ≤ 5. The second direction is perpendicular to the first direction. The distance the retaining rib 7 extends in the first direction is greater than the floating distance between the crests and troughs of the retaining rib 7. With a fixed length of retaining rib 7, it can have more corrugated structures, making the retaining rib 7 feel better and providing better friction. At the same time, more corrugated structures also allow the molten material to flow into the second cavity at a greater angle as a whole, at least to a certain extent reducing the path of the molten material flowing through the second cavity, thereby at least to a certain extent reducing the flow lines at the joint between the retaining rib 7 and the connecting plate 1, achieving the effect of improving the product qualification rate of the handle 10.

[0078] Optionally, 15mm≤L≤25mm, 5mm≤H≤10mm.

[0079] According to some embodiments of the present invention, as shown in the figure, the connecting plate 1 has a plurality of edge portions connected end to end, and the connection between two adjacent edge portions defines a corner portion, one of which is a predetermined corner portion 14. For example, in Figure 1 In the example, the connecting plate 1 can be formed as a square plate, then the connecting plate 1 has four edges connected end to end, and the connection point of any two adjacent edges defines a corner, then the connecting plate 1 has four corners, one of which is a preset corner 14; of course, the connecting plate 1 can also be formed as other polygons or polygon-like shapes, that is, the edges of the connecting plate 1 can extend along a straight line or along a curve.

[0080] The preset corner portion 14 has a first gate forming area 15 on the non-exterior surface of the connecting plate 1, which is suitable for corresponding to the first gate 101c of the handle mold 100.

[0081] Specifically, after the handle 10 is injection molded from the handle mold 100 and the handle 10 exits the mold, a portion of the material at the first gate 101c of the handle mold 100 will remain on the handle 10, forming a handle gate forming part. The first gate forming area 15 is the area where this handle gate forming part is located. It is understood that the handle 10 can be further processed to remove or partially remove the handle gate forming part. Of course, the handle gate forming part can also be left unprocessed, that is, the handle gate forming part can be retained on the handle 10. There is no specific limitation on this, and it can be set according to the actual needs of production.

[0082] As can be seen, in this application, the first gate forming area 15 is located on the non-appearance surface of the connecting plate 1. Therefore, the specific surface shape and surface treatment requirements of the first gate forming area 15 are relatively low, which makes it easier to process the handle gate forming part according to actual needs.

[0083] The retaining rib 7 is located on one side of the first gate forming area 15 in the first direction, and in the second direction, the first gate forming area 15 and the retaining rib 7 are offset. Therefore, the first gate forming area 15 and the retaining rib 7 are not flush in the second direction, and the second direction is perpendicular to the first direction. Thus, the relative arrangement direction of the first gate forming area 15 and the retaining rib 7 has non-zero angles with the first and second directions respectively. Since the retaining rib 7 extends along the first direction, it facilitates the connection between any position on the first gate forming area 15 and the retaining rib 7 to have a non-zero angle with the tangent direction at the corresponding position of the retaining rib 7. Therefore, during the injection molding process of the handle 10... The material flows into the cavity of the handle mold 100 through the first gate 101c corresponding to the first gate forming area 15 on the handle mold 100, and gradually diffuses. The approximate flow direction of the material at the corresponding position of the second cavity has a non-zero angle with the tangent direction at the corresponding position of the second cavity. Therefore, during the forming process of the handle 10, it helps to reduce the flow marks at the root of the retaining rib 7, that is, to reduce the flow marks at the connection between the retaining rib 7 and the connecting plate 1, thus reducing the flow marks on the appearance surface of the connecting plate 1. This helps to avoid flow mark defects on the appearance surface of the handle 10, especially the appearance surface of the connecting plate 1, improving the product yield and meeting the user's needs.

[0084] The following explanation, using the handle mold 100 as an example, explains the reason for the reduced flow lines at the joint between the retaining rib 7 and the connecting plate 1: During injection molding, if... Figures 13-16 As shown, the handle mold 100 has a first gate 101c, which is formed on the second wall of the first cavity 101. When the molten material flows out from the first gate 101c, the molten material will spread outward from the first gate 101c as the starting point. That is, the flow direction of the molten material is to spread outward from the first gate 101c as the center. Since the second cavity is offset from the first gate 101c in the second direction, it is convenient to make the flow direction of the molten material flowing out from the first gate 101c and reaching the second cavity have a non-zero angle with the tangent direction at any position on the retaining rib 7, so as to reduce the flow lines on the surface of the retaining rib 7 and the connection between the retaining rib 7 and the connecting plate 1.

[0085] It can be observed that, for example Figure 8As shown, the angle between the flow direction of the molten material flowing into the second cavity and the tangent at certain positions of the retaining rib 7 is a1. Compared to the angle between the flow direction of the molten material and the first direction, which is a2, the angle a1 at certain positions in the second cavity is larger than the angle a2. Therefore, the molten material can flow into the second cavity at a larger angle to a greater extent. Overall, the molten material can at least to a certain extent reduce the path of the molten material flowing through the second cavity, allowing the molten material to cool and form a solidified layer more quickly in the second cavity. This weakens the unstable flow field in the second cavity, making the orientation of the solidified metal powder in the second cavity more consistent. At least to a certain extent, this can reduce the flow marks at the joint between the retaining rib 7 and the connecting plate 1, thereby reducing the flow marks on the connecting plate 1 of the handle 10. This achieves the effect of improving the product qualification rate of the handle 10, reducing costs, and meeting the user's needs.

[0086] According to some embodiments of the present invention, such as Figures 1-3 , Figure 5 , Figure 9 As shown, the connecting plate 1 includes a first plate 11, and a retaining rib 7 is provided on the non-exterior surface of the first plate 11. The first plate 11 defines a preset corner portion 14. In the second direction, from one end of the first plate 11 adjacent to the preset corner portion 14 to one end of the first plate 11 away from the preset corner portion 14, the wall thickness of the first plate 11 gradually decreases.

[0087] As can be seen, this application sets a variable wall thickness region on the first plate 11, and sets the wall thickness of the variable wall thickness region to vary along the second direction, and the wall thickness gradually becomes the smallest in the direction away from the preset corner 14. Then the wall thickness of the entire first plate 11 gradually decreases along the second direction and in the direction away from the preset corner 14. The first gate forming area 15 is located at the end corresponding to the maximum thickness of the first plate 11. Thus, when using the paint-free material for injection molding, the flow of the material will be affected by the thickness change of the cavity corresponding to the first plate 11, so that the material flows stably, reduces the generation of flow marks on the appearance surface of the first plate 11, avoids the presence of flow mark defects on the appearance surface of the first plate 11, and facilitates further improvement of product yield.

[0088] To better explain why the flow marks on the surface of the first plate 11 are reduced, the following explanation will be based on the principle of the handle mold 100.

[0089] like Figures 13-16As shown, the first cavity is used to form the first plate 11 of the connecting plate 1, and the first cavity includes a first sub-cavity. The first sub-cavity is used to form the first plate 11. Since the first plate 11 defines a preset corner portion 14, the first gate 101c corresponding to the first gate forming area 15 is formed in the first sub-cavity. In the second direction, from one end of the first sub-cavity adjacent to the first gate 101c to the end of the first sub-cavity away from the first gate 101c, the cavity thickness of the first sub-cavity gradually decreases. Therefore, in the second direction, the cavity thickness of the first sub-cavity is the smallest at the end away from the first gate 101c. During the injection molding process, when the molten material flows in the first sub-cavity, based on the thickness change of the variable thickness region, the molten material flows more easily and has less flow resistance at the thicker position. Thus, the surface of the molten material flow front will exhibit the following appearance: Figure 12 As shown in the inclined plane, the actual flow direction of the molten material at each point on the leading edge is outward along the direction perpendicular to the tangent of the leading edge surface. Therefore, the flow direction at each point on the leading edge surface is divergent and will not converge. As a result, the molten material at the leading edge will not curl or overturn with each other, and the flow of the molten material is more stable. This can further reduce the flow marks on the first plate 11, further prevent the flow marks from appearing on the appearance surface of the first plate 11, further improve the pass rate of the handle 10, reduce costs, and meet the user's needs.

[0090] The following explanation states that the greater the wall thickness of the first plate 11, the greater the cavity thickness of the first sub-cavity, and the faster the flow rate of the corresponding molten material.

[0091] When the molten material is injected into the handle mold 100 under certain conditions, such as Figure 11 As shown, the temperature of the molten material drops sharply upon contact with the cold wall surface of the cavity, resulting in the formation of a solidified layer. The flow area of ​​the cavity decreases with increasing solidified layer thickness, thus the solidified layer thickness significantly affects flow resistance. The relationship between flowability s and cavity thickness h is:

[0092]

[0093] Where, η rep The viscosity is the viscosity of the material melt.

[0094] According to the fluidity formula, the fluidity *s* is directly proportional to the cube of the thickness *h*. For example, reducing the thickness by 50% will reduce the fluidity to one-eighth, which is equivalent to increasing the flow resistance by eight times. Therefore, the greater the thickness of the cavity, the smaller the flow resistance, the better the fluidity, and the faster the flow rate.

[0095] In short, according to the embodiments of the present invention, the handle mold 100 for molding the handle 10 has the advantage of ensuring the stability of the material melt flow, thereby reducing the flow marks on the first plate 11, and at least to a certain extent improving the product yield and meeting the user's usage requirements.

[0096] According to some embodiments of the present invention, the maximum wall thickness of the first plate 11 ranges from 2.5 mm to 3.2 mm (inclusive of endpoint values); and / or, the minimum wall thickness of the first plate 11 ranges from 1.8 mm to 2.5 mm (inclusive of endpoint values). It should be noted that, in the description of this application, "and / or" means including three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that simultaneously satisfies A and B.

[0097] Therefore, by reasonably setting the maximum wall thickness and / or minimum wall thickness of the first plate 11, while ensuring the first plate 11 has good reliability in use, it is easy to make the first sub-cavity corresponding to the first plate 11 have a suitable thickness, so as to ensure the fluidity of the material melt in the first sub-cavity, so that the material melt fills the entire first sub-cavity, which is beneficial to ensuring the injection molding processability of the first plate 11.

[0098] Optionally, the maximum wall thickness of the first plate 11 can be 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3.0mm, 3.1mm, or 3.2mm, etc. The minimum wall thickness of the first plate 11 can be 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, or 2.5mm, etc.

[0099] According to some embodiments of the present invention, in the second direction, the difference between the wall thickness of the first plate 11 at one end adjacent to the preset corner portion 14 and the wall thickness of the first plate 11 at the end away from the preset corner portion 14 ranges from 0.5 mm to 0.8 mm (inclusive of the endpoint value). Therefore, the difference between the maximum wall thickness and the minimum wall thickness of the first plate 11 ranges from 0.5 mm to 0.8 mm. Thus, by reasonably setting the difference between the maximum and minimum wall thickness of the first plate 11, the wall thickness of the first plate 11 has a suitable gradual change trend during the gradual change process, thereby avoiding disruption of the flow of the molten material, ensuring stable material flow during the molding process, and thus facilitating further reduction of flow marks on the first plate 11.

[0100] According to some embodiments of the present invention, the wall thickness of the first plate 11 is in the range of 2.2mm to 2.8mm (including the endpoint value). Therefore, the wall thickness at any position on the first plate 11 is within the range of 2.2mm to 2.8mm. Under the premise of ensuring the first plate 11 has good reliability, it is convenient to make the first sub-cavity corresponding to the first plate 11 have a suitable thickness, so as to ensure the fluidity of the material melt in the first sub-cavity, so that the material melt fills the entire first sub-cavity, which is beneficial to ensuring the injection molding processability of the first plate 11.

[0101] According to some embodiments of the present invention, such as Figure 1 , Figure 5 and Figure 9 As shown, the handle 10 also includes a first connecting rib 2, which is disposed on a non-visual surface of the connecting plate 1 (for example, the first connecting rib 2 is disposed on a non-visual surface of the first plate 11). The first connecting rib 2 extends along a first direction and is located on one side of the first gate forming area 15 in the first direction. In the second direction, the first gate forming area 15 and the first connecting rib 2 are misaligned, so the first gate forming area 15 and the first connecting rib 2 are not flush in the second direction. Since the second direction is perpendicular to the first direction, the relative arrangement direction of the first gate forming area 15 and the first connecting rib 2 has a non-zero angle with the first direction and the second direction, respectively. Because the first connecting rib 2 extends along the first direction, the line connecting any position on the first gate forming area 15 and the first connecting rib 2 is perpendicular to the extension direction of the first connecting rib 2. If the first direction (i.e., the first direction) has a non-zero angle, and the line connecting any position on the first gate forming area 15 and the first connecting rib 2 also has a non-zero angle with the second direction, then during the injection molding process of the handle 10, the material flows through the first gate 101c on the handle mold 100 corresponding to the first gate forming area 15 into the cavity of the handle mold 100 and gradually diffuses. The approximate flow direction of the material has a non-zero angle with the extension direction of the first connecting rib 2. Therefore, during the molding process of the handle 10, it is beneficial to reduce the flow marks at the root of the first connecting rib 2, that is, to reduce the flow marks at the connection between the first connecting rib 2 and the connecting plate 1, thus reducing the flow marks on the appearance surface of the connecting plate 1. This helps to avoid flow mark defects on the appearance surface of the handle 10, especially the appearance surface of the connecting plate 1, improves the product yield, and facilitates meeting the user's needs.

[0102] Compared to some technologies where the gate forming area and the connecting rib are aligned along a second direction so that the material flow direction during injection molding is basically parallel to the extension direction of the connecting rib, resulting in a large number of flow marks at the root of the connecting rib, the handle 10 in this application sets the first gate forming area 15 on the surface of the connecting plate 1 corresponding to the non-appearance surface of the connecting plate 1 at a preset corner 14, and offsets the first gate forming area 15 from the first connecting rib 2 in the second direction. This ensures that the line connecting any position on the first gate forming area 15 and the first connecting rib 2 has a non-zero angle with the extension direction of the first connecting rib 2, for example, the angle between the line connecting any position on the first gate forming area 15 and the first connecting rib 2 and the extension direction of the first connecting rib 2 is in the range of 30° to 45°. This helps reduce flow marks at the root of the first connecting rib 2 and flow marks on the appearance surface of the connecting plate 1, thereby avoiding flow mark defects in the handle 10, improving the product qualification rate of the handle 10, reducing costs, and meeting user needs.

[0103] In actual production, since the position of the first connecting rib 2 needs to meet the actual application requirements, the selection of the preset corner portion 14 can be reasonably set according to the position and extension direction of the first connecting rib 2.

[0104] Correspondingly, the cavity also includes a third cavity, which is used to form the first connecting rib 2. The third cavity is connected to the side where the second wall is located, that is, the first connecting rib 2 formed after injection molding is connected to the non-exterior surface of the connecting plate 1. The third cavity extends along the first direction. In the second direction, the first gate 101c and the third cavity are misaligned, so that the first gate forming area 15 on the connecting plate 1 corresponding to the first gate 101c is misaligned with the first connecting rib 2 in the second direction.

[0105] The following explanation, based on the structure of the handle mold 100, explains the reason for the reduction of flow lines from a theoretical perspective.

[0106] Specifically, during injection molding, the hotter molten material enters the first cavity through the first gate 101c and then flows into the third cavity until both cavities are filled. During this flow, the molten material comes into contact with the cooler walls of the first and third cavities, rapidly freezing to form a thin solidified layer. The arrangement of metal particles within this solidified layer determines the quality and appearance of the paint-free product. Stable flow of the molten material ensures consistent metal particle orientation, resulting in a superior product and a better appearance.

[0107] Compared to some technologies where the gate and the cavity corresponding to the connecting rib are opposite each other along the second direction, the material flow direction during injection molding is basically parallel to the extension direction of the cavity. The path of the material flowing through the cavity in the flow direction is relatively longer. The solidified layer on the cavity wall will hinder the flow of the material. Therefore, at both sides of the cavity thickness, the leading edge of the material is prone to converge in the cavity, resulting in unstable melt flow and thus causing flow marks on the product.

[0108] When the molten material flows out from the first gate 101c, it spreads outwards from the corner of the first gate 101c as the starting point. That is, the flow direction of the molten material is outwards from the first gate 101c as the center. When the molten material flows through the third cavity, because the first gate 101c and the third cavity are misaligned in the second direction, there is an angle between the approximate flow direction of the molten material and the length direction of the third cavity (i.e., the first direction) during injection molding. At this time, the molten material enters the second cavity more from the thickness side of the third cavity. The distance the molten material travels through the third cavity in the flow direction is much shorter than the length of the second cavity. The path of the melt flowing through the third cavity in the flow direction is relatively shorter, which facilitates the rapid filling of the third cavity with the melt. This allows for rapid cooling and solidification on the wall of the third cavity, weakening the unstable flow field at the third cavity and making the orientation of the solidified metal powder at the third cavity more consistent. At the same time, in the melt flow direction, the melt front is less likely to converge at various points. For example, the melt on both sides of the thickness of the third cavity will not converge in the third cavity, thereby improving the stability of the melt flow, weakening or even eliminating the unstable flow field formed at the third cavity, reducing or avoiding flow marks at the root of the first connecting rib 2, reducing flow marks on the outer surface of the connecting plate 1, and thus making it easier to avoid flow mark defects on the handle 10.

[0109] It is understood that the second cavity has a certain thickness and length. In this application, the corresponding dimension of the second cavity in the first direction is the length of the second cavity, and the corresponding dimension of the second cavity in the second direction is the thickness of the second cavity. The length of the second cavity is much greater than the thickness of the second cavity.

[0110] According to some embodiments of the present invention, such as Figure 6As shown, the handle 10 also includes a buckle 22, which can be used to snap the handle 10 to other components of the garment processing equipment, such as the dispenser box. The buckle 22 is connected to the end of the first connecting rib 2 away from the connecting plate 1. The end of the first connecting rib 2 away from the buckle 22 has a thinning portion 23, that is, the end of the first connecting rib 2 connected to the connecting plate 1 has a thinning portion 23. The thickness of the thinning portion 23 is smaller than the thickness of other positions of the first connecting rib 2, and the thinning portion 23 is directly opposite to the buckle 22, so that there is a "material removal portion" at the root of the buckle 22 to avoid flow marks at the root of the buckle 22, that is, to avoid flow marks at the end of the first connecting rib 2 connected to the connecting plate 1.

[0111] It is understandable that the area corresponding to the thinning part 23, as well as the thickness of the thinning part 23, can be specifically set according to actual needs; for example, in Figure 6 In the example, in the length direction of the first connecting rib 2, the length of the thinning part 23 can be greater than or equal to the length of the buckle 6, and the thickness of the thinning part 23 is t, 0.3mm≤t≤0.5mm, so as to ensure that the mold cavity corresponding to the thinning part 23 is completely filled and to avoid the generation of flow marks.

[0112] In some embodiments, such as Figure 6 As shown, the end of the first connecting rib 2 away from the connecting plate 1 is provided with a notch 21. The notch 21 penetrates the end face of the first connecting rib 2 away from the connecting plate 1 and penetrates the connecting rib along the thickness direction of the first connecting rib 2. The notch 21 can be formed by a portion of the end face of the first connecting rib 2 away from the connecting plate 1 recessed towards the connecting plate 1, so that the notch 21 has a first notch wall and a second notch wall. There are two second notch walls, and the two second notch walls are respectively located at both ends of the first notch wall in the first direction.

[0113] like Figure 6 As shown, the buckle 22 is connected to the wall of the notch 21, and the two ends of the buckle 22 in the first direction are respectively spaced apart from the corresponding wall of the notch 21. Thus, the buckle 22 is connected to the wall of the first notch, and the buckle 22 is spaced apart from each wall of the second notch. In the length direction of the first connecting rib 2, the length of the thinned part 23 can be greater than or equal to the sum of the length of the buckle 6 and the length of the two notches 21.

[0114] Correspondingly, in the handle mold 100, the end of the second cavity away from the first cavity has a protrusion for forming the notch 21. The protrusion penetrates the third cavity along the thickness direction of the third cavity and protrudes toward the first cavity in the extending direction of the third cavity. A snap-fit ​​cavity is connected to the end of the third cavity away from the first cavity, and the snap-fit ​​cavity extends in a direction away from the first cavity.

[0115] Specifically, such as Figures 13-16 As shown, since the third cavity is connected to the first gate 101c through the first cavity, when the material melt flows in the cavity during injection molding, it will first flow through the first cavity, then flow to the third cavity, and then flow from the third cavity into the snap-fit ​​cavity. Due to the setting of the protrusion, the material melt in the third cavity can at least avoid flowing back to the third cavity through the snap-fit ​​cavity, thus avoiding material confluence. This at least avoids the formation of an unstable flow field at the connection between the third cavity and the snap-fit ​​cavity, thereby reducing the flow lines generated at the connection between the third cavity and the snap-fit ​​cavity, reducing the flow lines at the root of the snap-fit ​​22, reducing the flow lines on the first connecting rib 2, and improving product quality.

[0116] In other words, assuming that the first connecting rib 2 does not have a notch 21 and the end of the third cavity in the handle mold 100 that is far from the first cavity does not have a protrusion, during injection molding, the material in the third cavity is prone to backflow at the opposite sides of the snap-fit ​​cavity and at the position connected to the third cavity during the process of material flow to the snap-fit ​​cavity, making the material flow unstable and thus easily generating flow marks at the root of the snap-fit ​​22; this application reduces flow marks at the root of the snap-fit ​​22 by setting a notch 21.

[0117] According to some embodiments of the present invention, such as Figure 1 , Figure 5 , Figure 9 As shown, there are multiple first connecting ribs 2, which are spaced apart along the second direction. By setting multiple first connecting ribs 2, the structural strength of the handle 10 can be further improved.

[0118] Since the first gate forming area 15 is located on the preset corner portion 14, the multiple first connecting ribs 2 are located on the same side of the preset corner portion 14 in the second direction.

[0119] Correspondingly, in the handle mold 100, there are multiple third cavities, which are spaced apart along the second direction. After entering the first cavity, the molten material enters each third cavity in sequence.

[0120] like Figure 1 , Figure 5 and Figure 9As shown, the handle 10 also includes at least one second connecting rib 3. The second connecting rib 3 is disposed on the non-appearance surface of the connecting plate 1, and the second connecting rib 3 is connected between two adjacent first connecting ribs 2, so as to connect multiple first connecting ribs 2 into one piece, further improving the structural strength and structural stability of the handle 10. The second connecting rib 3 extends in a direction inclined relative to the second direction, that is, the extension direction of the second connecting rib 3 is inclined relative to the second direction. Therefore, the extension direction of the second connecting rib 3 is also inclined relative to the first direction, so that the relative arrangement direction of the first gate forming area 15 and the second connecting rib 3 has a non-zero angle with the extension direction of the second connecting rib 3. In the injection molding process of the handle 10, the approximate flow direction of the material melt can have a non-zero angle with the extension direction of the second connecting rib 3, thereby reducing the flow marks at the root of the second connecting rib 3, that is, reducing the flow marks at the connection between the second connecting rib 3 and the connecting plate 1, which can further reduce the flow marks on the appearance surface of the connecting plate 1, and further avoid the appearance of flow mark defects on the appearance surface of the connecting plate 1.

[0121] Corresponding to the handle mold 100, such as Figures 13-16 As shown, the handle mold 100 also includes at least one fourth cavity, which is connected to the side of the second wall of the first cavity and is used to form the second connecting rib 3. The fourth cavity extends in a direction inclined relative to the second direction.

[0122] Specifically, during injection molding, when the molten material flows within the cavity, it first flows through the first cavity and then into the fourth cavity. Because the first gate 101c and the fourth cavity are offset in the second direction, the angle between the approximate flow direction of the material and the length direction of the fourth cavity is non-zero when the material flows through the fourth cavity. At this time, the material enters the fourth cavity from the opposite side of the thickness, which facilitates the material to quickly fill the fourth cavity. At the same time, the material front edges are less likely to converge in the material flow direction. For example, the melt on both sides of the thickness of the fourth cavity will not converge in the fourth cavity, thereby improving the stability of the material flow, reducing or avoiding flow marks at the root of the second connecting rib 3, and reducing flow marks on the surface of the connecting plate 1, so as to further improve product quality.

[0123] It is evident that the path of the material flowing through the fourth cavity along the flow direction is relatively short, which can at least reduce the formation of an unstable flow field at the connection between the fourth cavity and the first cavity to a certain extent, and at least reduce the material convergence caused by the material in the first cavity flowing back to the first cavity through the fourth cavity to a certain extent, thereby further reducing the flow pattern at the root of the second connecting rib 3.

[0124] In some embodiments, such as Figure 1As shown, the first gate forming area 15 is located on one side of the thickness direction of the second connecting rib 3, which helps to increase the angle between the approximate flow direction of the material and the length direction of the fourth cavity, thereby further reducing the flow lines at the root of the second connecting rib 3 and improving product quality.

[0125] For example, in Figure 1 In the example, there are multiple second connecting ribs 3, which are spaced apart along the first direction and arranged in parallel. Of course, at least two of the multiple second connecting ribs 3 can also be arranged in a non-parallel manner.

[0126] According to some embodiments of the present invention, such as Figure 1 As shown, the angle between the extension direction of the second connecting rib 3 and the first direction is α, where 30° ≤ α ≤ 75°. Correspondingly, in the handle mold 100, the angle between the extension direction of the fourth cavity and the first direction is α', where 30° ≤ α' ≤ 75°. For example, α can be 30°, 40°, 45°, 50°, 60°, or 75°, etc.

[0127] In injection molding, taking α = 45° as an example, such as... Figure 1 As shown, it can be found that when the angle between the flow direction of the material melt flowing out from the first gate 101c and the first direction is 30°, the angle between it and the extension direction of the fourth cavity can reach 75°. The material melt is more likely to flow perpendicular to the extension direction of the fourth cavity. At this time, the path of the material melt flowing through the fourth cavity is shorter, and the unstable flow field formed is weaker, which can reduce the flow lines at the connection between the second connecting rib 3 and the first plate 11.

[0128] According to some embodiments of the present invention, such as Figure 9 As shown, the second connecting rib 3 includes a first body part 31 and a first connecting part 32. The first connecting part 32 is connected between the connecting plate 1 and the first body part 31. The thickness of the first connecting part 32 is greater than or equal to 1mm, so as to reduce flow marks at the second connecting part 32 and further improve product quality while ensuring the reliable use of the second connecting rib 3.

[0129] In the handle mold 100, the fourth cavity includes a first body cavity and a first connecting cavity. The first connecting cavity connects the first cavity and the first body cavity, and the cavity thickness of the first connecting cavity is greater than or equal to 1 mm.

[0130] During injection molding, after the molten material flows into the relatively thin first connecting cavity, it comes into contact with the cooler and thinner wall of the first connecting cavity during its flow. The molten material can freeze more quickly on the wall of the first connecting cavity and rapidly form a solidified layer. By reasonably setting the thickness of the first connecting cavity, it is easier to reduce the backflow of the molten material at the first connecting cavity, which helps to ensure that a stable flow field is formed at the connection between the first cavity and the first connecting cavity. This reduces the flow lines at the joint between the second connecting rib 3 and the connecting plate 1 to at least a certain extent, thereby improving the product yield.

[0131] Of course, in other embodiments of this application, such as Figure 1 As shown, the angle α between the extension direction of the second connecting rib 3 and the first direction satisfies 30°≤α≤75°, and the second connecting rib 3 includes a first body part 31 and a first connecting part 32. The first connecting part 32 is connected between the connecting plate 1 and the first body part 31, and the thickness of the first connecting part 32 is greater than or equal to 1mm.

[0132] According to some embodiments of the present invention, such as Figure 9 , Figure 11 As shown, the handle 10 also includes a third connecting rib 4, which is located on the non-visual surface of the connecting plate 1 and is connected to one end of the length of the first connecting rib 2. The third connecting rib 4 extends along the second direction, so the third connecting rib 4 can be connected to one or more first connecting ribs 2 to further enhance the structural strength and structural stability of the handle 10.

[0133] The third connecting rib 4 includes a second body part 41 and a second connecting part 42. The second connecting part 42 is connected between the connecting plate 1 and the second body part 41. The thickness of the second connecting part 42 is in the range of 2△h to 3△h, where △h is the thickness of the solidified layer formed by the melt contacting the cavity of the handle mold 100 during the injection molding process of the handle 10.

[0134] It is understandable that, such as Figures 13-16 As shown, corresponding to the handle mold 100, the handle mold 100 also includes a fifth cavity, which is connected to the side where the second wall is located, and the fifth cavity is used to form the third connecting rib 4. The fifth cavity extends along the second direction and is connected to the second cavity.

[0135] When the molten material flows through a location with ribbed cavities, such as Figure 11As shown, the flow direction of the molten material is divided into two parts. One part of the molten material continues to flow in the cavity along the original flow direction, while the other part flows to the rib cavity. In this application, when the molten material flowing into the first cavity from the first gate 101c passes through the fifth cavity, a part of the molten material continues to flow in the first cavity along the original flow direction, while the other part flows to the fifth cavity. When the molten material fills the fourth cavity, the hot molten material continues to flow back from the fifth cavity to the first cavity. With the continuous flow of the subsequent molten material, an unstable flow field is formed near the root of the fourth cavity. Under the continuous action of fluid pressure, the solidified layer of the outer surface corresponding to the root of the fifth cavity is destroyed, that is, the solidified layer of the first wall at the position corresponding to the fifth cavity is destroyed, resulting in disordered orientation of the metal particles in the solidified layer in this area. After the injection molding process is completed, this manifests as flow marks on the outer surface of the connecting plate 1, causing flow mark defects on the outer surface of the connecting plate 1.

[0136] Therefore, in order to weaken and avoid the formation of an unstable flow field near the root of the fifth cavity, it is necessary to ensure that the melt flowing to the fifth cavity is reduced or even that backflow does not occur. That is, the melt flowing to the fifth cavity must be able to cool and freeze rapidly in the fourth cavity. Under the condition that other molding conditions are fixed, the fifth cavity is set to include a second body cavity and a second connecting cavity. The second connecting cavity is connected between the first cavity and the second body cavity, and the thickness of the second connecting cavity is set to be 2△h to 3△h, that is, the thickness of the second connecting part 42 is 2△h to 3△h. This effectively ensures that the fourth cavity can be filled, while avoiding the generation of spray flow marks on the third connecting rib 4.

[0137] Under the same molding process conditions, the thickness of the solidified layer is positively correlated with the filling time, that is, the shorter the filling time, the smaller the thickness of the solidified layer. For example, in the molding process of handle 10, if the filling time is selected as 4.5s, the mold temperature is 60℃, the melt temperature is 240℃, and the melt solidification stability is 210℃, the thickness of the solidified layer can be calculated to be about 0.15mm. Therefore, under a reasonable filling time, the thickness range of the second connecting part 42 in this application is 0.3mm to 0.5mm, so as to ensure that the fifth cavity is completely filled, while avoiding flow marks from the third connecting rib 4.

[0138] Furthermore, since the third connecting rib 4 is arranged along the second direction and is connected to the first connecting rib 2, it forms a mutually perpendicular reinforcing rib structure on the non-visual surface of the connecting plate 1. This allows the connecting plate 1 of the handle 10 to maintain a good structural shape under the reinforcement of the third connecting rib 4 and the first connecting rib 2 when subjected to external forces in multiple directions. At the same time, it improves the torsional and tensile resistance of the connecting plate 1 and makes the structure more stable.

[0139] According to some embodiments of the present invention, such as Figure 11As shown, the ratio of the height of the second connecting portion 42 to the height of the third connecting rib 4 ranges from 1 / 8 to 1 / 10. The function of the third connecting rib 4 is to improve the structural strength of the connecting plate 1, while the second connecting portion 42 is provided to reduce flow lines between the third connecting rib 4 and the connecting plate 1. Therefore, by reasonably setting the height of the second connecting portion 42, the flow lines at the joint between the third connecting rib 4 and the connecting plate 1 can be reduced while ensuring the strengthening effect of the third connecting rib 4 on the connecting plate 1.

[0140] It is understandable that, corresponding to the handle mold 100, the ratio of the height of the second connecting cavity to the height of the fifth cavity is in the range of 1 / 8 to 1 / 10.

[0141] At this time, the thickness of the second body part 41 is greater than the thickness of the second connecting part 42, so that the overall thickness of the third connecting rib 4 can achieve the effect of strengthening the structural stability of the connecting plate 1.

[0142] Optionally, the height of the second connecting portion 42 ranges from 3mm to 5mm (including the endpoint value).

[0143] Of course, the ratio of the height of the first connecting part 32 to the height of the second connecting rib 3 can also be 1 / 8 to 1 / 10. Based on the same reason as above, it is also possible to reduce the flow lines at the joint between the second connecting rib 3 and the connecting plate 1 while ensuring the strengthening effect of the second connecting rib 3 on the connecting plate 1.

[0144] In some embodiments of the present invention, such as Figure 1 , Figure 5 and Figure 9 As shown, the handle 10 includes a second connecting rib 3 and a third connecting rib 4. Both the second connecting rib 3 and the third connecting rib 4 are provided on the non-visual surface of the connecting plate 1. The second connecting rib 3 is connected between two adjacent first connecting ribs 2, and the second connecting rib 3 is inclined relative to both the first direction and the second direction. The third connecting rib 4 extends along the second direction and is connected to one end of the length of the first connecting rib 2.

[0145] The second connecting rib 3 includes a first body part 31 and a first connecting part 32. The first connecting part 32 is connected between the connecting plate 1 and the first body part 31, and the thickness of the first connecting part 32 is greater than or equal to 1 mm. The third connecting rib 4 includes a second body part 41 and a second connecting part 42. The second connecting part 42 is connected between the connecting plate 1 and the second body part 41, and the thickness of the second connecting part 42 is in the range of 2Δh to 3Δh.

[0146] As can be seen, since the extension direction of the second connecting rib 3 is different from that of the third connecting rib 4, there is a certain difference in the flow of the molten material relative to the second connecting rib 3 and the flow of the molten material relative to the third connecting rib 4 during the injection molding process of the handle 10. Therefore, the thickness requirement of the first connecting part 32 is different from that of the second connecting part 42 to adapt to the above-mentioned difference in the flow of the molten material. This facilitates the reduction of flow marks at the root of the second connecting rib 3 and the root of the third connecting rib 4, thereby further effectively reducing the flow marks on the surface of the connecting plate 1.

[0147] According to some embodiments of the present invention, such as Figures 1-2 , Figure 5 , Figure 7 , Figure 9 As shown, the handle 10 also includes a side plate 5. One end of the side plate 5 is connected to the outer edge of the connecting plate 1 in the first direction, and the side plate 5 is connected to the preset corner portion 14. The surface of the side plate 5 facing away from the connecting plate 1 in the thickness direction is the appearance surface. It can be seen that the side plate 5 is set on the outer edge of the connecting plate 1 near the preset corner portion 14, so that the side plate 5 is closer to the first gate forming area 15, ensuring that the material flowing from the first gate 101c to the first cavity can flow stably into the part of the cavity corresponding to the side plate 5 (for example, the side plate cavity described below), thereby reducing flow marks on the side plate 5 to a certain extent, and then reducing flow marks on the appearance surface of the side plate 5, further improving the quality of the handle 10.

[0148] Correspondingly, in the handle mold 100, the handle mold 100 also includes a side plate cavity. One end of the side plate cavity is connected to the outer edge of the first cavity near the first gate 101c in the first direction. The wall surface of the side plate cavity facing away from the first cavity in the thickness direction is used to form the appearance surface.

[0149] The following explanation, using the handle mold 100 as an example, explains the reason for the reduction of flow marks on the side plate 5: During injection molding, the molten material enters the first cavity from the first gate 101c. Since the side plate cavity is adjacent to the first gate 101c, when the molten material flows in the first cavity, a portion of the molten material can flow directly to the side plate cavity. This shortens the path of the molten material from the first gate 101c to the side plate cavity, which helps to ensure that the molten material flows stably from the first cavity to the side plate cavity. This reduces the flow marks at the junction of the side plate cavity and the first cavity, as well as on the side plate cavity, thus improving the yield of the handle 10 product to a certain extent and meeting the user's needs.

[0150] According to some embodiments of the present invention, such as Figures 1-2As shown, the connecting plate 1 includes a first plate 11 and a second plate 12. A retaining rib 7 is disposed on the non-exterior surface of the first plate 11, and the first plate 11 defines a preset corner portion 14. The second plate 12 is connected to one end of the first plate 11 in a second direction, and the second plate 12 is positioned opposite to the preset corner portion 14. Thus, the second plate 12 can be connected to the end of the first plate 11 in the second direction away from the preset corner portion 14, where the second direction is perpendicular to the first direction. The second plate 12 has a retaining through hole 121, and the retaining rib 7 is disposed adjacent to and opposite to the retaining through hole 121. Users can operate the handle 10 through the retaining through hole 121, such as moving the handle 10, to facilitate opening and closing the handle 10, making the operation of the handle 10 simpler and more convenient.

[0151] Corresponding to the handle mold 100, such as Figures 13-16 The handle mold 100 shown also includes a sixth cavity for forming the second plate 12. The sixth cavity is connected to one end of the first cavity in the second direction, and the sixth cavity is opposite to the first gate 101c. That is, the sixth cavity is connected to the end of the first cavity away from the first gate 101c. A fastening part for forming the fastening through hole 121 is also connected to the sixth cavity. During the injection molding process, the molten material enters the first cavity from the first gate 101c, then flows into the sixth cavity and solidifies to form the second plate 12 and the fastening through hole 121.

[0152] It is understandable that the through hole 121 penetrates both the non-exterior and exterior surfaces of the second plate 12.

[0153] According to some embodiments of the present invention, such as Figures 1-2 , Figure 5 , Figure 9 As shown, the connecting plate 1 also includes a third plate 13, one end of which is connected to the end of the second plate 12 away from the first plate 11. The non-exterior surface of the third plate 13 is provided with a second gate forming area 131 that is suitable for corresponding to the second gate 101d of the handle mold 100.

[0154] As can be seen, the second plate 12 is connected between the third plate 13 and the first plate 11. The two sides of the thickness of the third plate 13 are the appearance surface and the non-appearance surface of the third plate 13, respectively. The non-appearance surface of the third plate 13 and the non-appearance surface of the first plate 11 are located on the same side of the handle 10. The first plate 11 can be the main plate of the handle 10, and the third plate 13 can be the sub-plate of the handle 10. By adding a second gate 101d to the first gate 101c, the efficiency of hand molding can be improved and the integrity of the handle 10 molding can be guaranteed. At the same time, during the injection molding process, the timing of the injection of molten material into the second gate 101d relative to the first gate 101c can be adjusted to avoid the presence of a weld line after the material flowing into the cavity through the first gate 101c and the second gate 101d solidifies. Even if a weld line exists after solidification, it will not be located on the main plate of the handle 10, i.e., the first plate 11, thus ensuring the quality of the handle 10. For example, the first gate 101c can be opened first and the material can be injected into the cavity through the first gate 101c. After a preset time, the material from the first gate 101c can flow to the second gate 101d and solidify. Then, the second gate 101d can be opened again to continue injecting material into the cavity until the cavity is full.

[0155] Accordingly, such as Figures 13-16 As shown, the handle mold 100 also includes a seventh cavity for molding the third plate 13. One end of the seventh cavity is connected to the end of the sixth cavity away from the first cavity. The seventh cavity is provided with a second gate 101d.

[0156] Optionally, at the aforementioned preset time, multiple process parts can be fabricated using the handle mold 100 through experimentation to determine the moment when the molten material is injected into the second gate 101d. Specifically, taking the moment when the molten material is injected into the first gate 101c as the zero point, the distance between the molten material injected from the first gate 101c and the seventh cavity (i.e., the third plate 13) is recorded every unit of time. Through multiple experiments and records, the moment when the molten material injected from the first gate 101c reaches the seventh cavity is determined.

[0157] According to some embodiments of the present invention, such as Figure 1 , Figure 5 , Figures 9-10 As shown, the handle 10 also includes a limiting structure 9, which is located on a non-exterior surface of the connecting plate 1. The limiting structure 9 can be used to achieve a limiting fit between the handle 10 and other components of the garment processing equipment, facilitating quick installation of the handle 10. For example, the handle 10 can be snapped together with the dispenser box. The limiting structure 9 can achieve pre-positioning between the handle 10 and the dispenser box, so that the handle 10 can be snapped onto the dispenser box more efficiently and accurately, improving the installation accuracy of the handle 10.

[0158] Furthermore, such as Figure 10As shown, the limiting structure 9 includes a third body portion 91 and a third connecting portion 92. The third connecting portion 92 connects the third body portion 91 and the connecting plate 1. The thickness of the third connecting portion 92 ranges from 2Δh to 3Δh, where Δh is the thickness of the solidified layer formed when the melt contacts the cavity of the handle mold 100 during the injection molding process of the handle 10. This ensures that the portion of the cavity used to form the limiting structure 9 (e.g., the limiting cavity described below) is completely filled, while avoiding the generation of spray marks on the limiting structure 9.

[0159] Corresponding to handle mold 100, such as Figure 13 As shown, the handle mold 100 also includes a limiting cavity for forming the limiting structure 9. The limiting cavity is connected to the second wall surface. The limiting cavity includes a third body cavity and a third connecting cavity. The third connecting cavity is connected between the first cavity and the third body cavity.

[0160] Under the same molding process conditions, the thickness of the solidified layer is positively correlated with the filling time, that is, the shorter the filling time, the smaller the thickness of the solidified layer. For example, in the molding process of the handle 10, if the filling time is selected as 4.5s, the mold temperature is 60℃, the melt temperature is 240℃, and the melt solidification stability is 210℃, the thickness of the solidified layer can be calculated to be about 0.15mm. Therefore, under a reasonable filling time, the thickness range of the third connecting part 92 in this application is 0.3mm to 0.5mm, so as to ensure that the limiting cavity is completely filled, while avoiding flow marks from the limiting structure 9.

[0161] Optionally, in Figure 1 , Figure 5 and Figure 9 In the example, the limiting structure 9 is a hollow annular column. One end of the annular column is connected to a non-exterior surface of the connecting plate 1, and the other end extends away from the connecting plate 1. Correspondingly, positioning ribs into which the annular column can be inserted are provided on other components of the garment handling equipment, such as the dispenser box. When installing the handle 10, aligning the hollow part of the annular column with the positioning ribs ensures the movement path for the handle 10 to engage with the aforementioned components, thereby enabling the handle 10 to be installed more accurately. Of course, the structure of the limiting structure 9 is not limited to this.

[0162] A garment handling apparatus (not shown) according to a second aspect embodiment of the present invention includes a handle 10 according to the second aspect embodiment described above.

[0163] According to an embodiment of the present invention, the garment processing equipment (not shown in the figure) can improve the product qualification rate, reduce costs, and meet the user's needs by adopting the handle 10 described above.

[0164] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, "first feature" and "second feature" may include one or more of the features. In the description of this invention, "a plurality of" means two or more. In the description of this invention, "above" or "below" the second feature may include direct contact between the first and second features, or it may include contact between the first and second features not in direct contact but through another feature between them. In the description of this invention, "above," "over," and "on top" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0165] Other components of the garment processing apparatus according to embodiments of the present invention, such as motors and control systems, as well as their operation, are known to those skilled in the art and will not be described in detail here.

[0166] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A handle, characterized in that, The handle is a one-piece injection molded part, and the handle includes: A connecting plate, wherein one side surface of the connecting plate in the thickness direction is an external surface and the other side surface is a non-external surface, the connecting plate has a plurality of edge portions connected end to end, and the connection point of two adjacent edge portions defines a corner portion, one of which is a preset corner portion, and the preset corner portion has a first gate forming area on the non-external surface of the connecting plate that is suitable for corresponding to the first gate of the handle mold. At least one retaining rib is provided on the non-visual surface of the connecting plate, and the retaining rib extends in a wavy shape along a first direction. There is a non-zero angle between the line connecting the first gate forming area and at least a portion of the retaining rib and the first direction of the tangent direction at the corresponding position on the retaining rib.

2. The handle according to claim 1, characterized in that, The retaining rib has crests and troughs. The distance between the crests and troughs in the first direction is L, and the distance between the crests and troughs in the second direction is H, where 1.5 ≤ L / H ≤ 5. The second direction is perpendicular to the first direction.

3. The handle according to claim 1, characterized in that, The retaining rib is located on one side of the first gate forming area in the first direction, and in the second direction, the first gate forming area and the retaining rib are offset from each other, and the second direction is perpendicular to the first direction.

4. The handle according to claim 3, characterized in that, The connecting plate includes a first plate, the retaining rib is disposed on the non-exterior surface of the first plate, and the first plate defines the preset corner portion. In the second direction, from one end of the first plate adjacent to the preset corner portion to one end of the first plate away from the preset corner portion, the wall thickness of the first plate gradually decreases.

5. The handle according to claim 4, characterized in that, The maximum wall thickness of the first plate ranges from 2.5 mm to 3.2 mm; and / or the minimum wall thickness of the first plate ranges from 1.8 mm to 2.5 mm.

6. The handle according to claim 4, characterized in that, In the second direction, the difference between the wall thickness of the end of the first plate adjacent to the preset corner and the wall thickness of the end of the first plate away from the preset corner ranges from 0.5mm to 0.8mm.

7. The handle according to claim 4, characterized in that, The wall thickness of the first plate ranges from 2.2 mm to 2.8 mm.

8. The handle according to claim 3, characterized in that, Also includes: The first connecting rib is disposed on the non-visual surface of the connecting plate. The first connecting rib extends along the first direction and is located on one side of the first gate forming area in the first direction. In the second direction, the first gate forming area and the first connecting rib are offset.

9. The handle according to claim 8, characterized in that, The handle also includes: A buckle is connected to the end of the first connecting rib away from the connecting plate. The end of the first connecting rib away from the buckle has a thinned portion, which is positioned opposite the buckle.

10. The handle according to claim 8, characterized in that, The first connecting rib is multiple, and the multiple first connecting ribs are spaced apart along the second direction. The handle also includes: At least one second connecting rib is disposed on the non-visual surface of the connecting plate and is connected between two adjacent first connecting ribs, the second connecting rib extending in a direction inclined relative to the second direction.

11. The handle according to claim 10, characterized in that, The angle between the extension direction of the second connecting rib and the first direction is α, 30°≤α≤75°; and / or, the second connecting rib includes a first body portion and a first connecting portion, the first connecting portion being connected between the connecting plate and the first body portion, and the thickness of the first connecting portion being greater than or equal to 1mm.

12. The handle according to claim 8, characterized in that, Also includes: The third connecting rib is disposed on the non-exterior surface of the connecting plate and is connected to one end of the length of the first connecting rib. The third connecting rib extends along the second direction and includes a second body part and a second connecting part. The second connecting part is connected between the connecting plate and the second body part. The thickness of the second connecting part is in the range of 2△h~3△h, where △h is the thickness of the solidified layer formed by the melt contacting the cavity of the handle mold during the injection molding process.

13. The handle according to claim 12, characterized in that, The ratio of the height of the second connecting part to the height of the third connecting rib is in the range of 1 / 8 to 1 / 10.

14. The handle according to claim 3, characterized in that, Also includes: The side plate has one end connected to the outer edge of the connecting plate in the first direction and to the preset corner portion. The surface of the side plate facing away from the connecting plate in the thickness direction is the appearance surface.

15. The handle according to claim 3, characterized in that, The connecting plate includes a first plate and a second plate. The retaining rib is disposed on the non-exterior surface of the first plate, and the first plate defines the preset corner portion. The second plate is connected to one end of the first plate in a second direction, and the second plate is disposed opposite to the preset corner portion. The second plate forms a retaining through hole, and the retaining rib is disposed adjacent to the retaining through hole, and the retaining rib is opposite to the retaining through hole. The second direction is perpendicular to the first direction.

16. The handle according to claim 15, characterized in that, The connecting plate also includes a third plate, one end of which is connected to the end of the second plate away from the first plate, and the non-exterior surface of the third plate is provided with a second gate forming area suitable for corresponding to the second gate of the handle mold.

17. The handle according to claim 1, characterized in that, Also includes: A limiting structure is provided on the non-exterior surface of the connecting plate. The limiting structure includes a third body part and a third connecting part. The third connecting part is connected between the third body part and the connecting plate. The thickness of the third connecting part is in the range of 2△h~3△h, where △h is the thickness of the solidified layer formed by the melt contacting the cavity of the handle mold during the injection molding process.

18. The handle according to any one of claims 1-17, characterized in that, The handle is made of a paint-free material.

19. A garment processing device, characterized in that, Includes the handle according to any one of claims 1-18.

20. A handle mold for forming handles, characterized in that, The handle is the handle according to any one of claims 1-18, and the handle mold comprises: The handle mold core has a cavity, which includes a first cavity and at least one second cavity. The first cavity has a first wall and a second wall. The first wall is used to form the outer surface of the connecting plate, and the second wall is used to form the non-outer surface of the connecting plate. The second cavity is connected to one side of the second wall and is used to form the retaining rib. The second cavity extends in a wavy shape along the first direction.

Images