Injection molding device, water tank and cleaning equipment

Abstract

The utility model discloses an injection molding device, a water tank and cleaning equipment, the injection molding device comprises a first mold assembly and a second mold assembly, the first mold assembly is provided with a cavity and a molding part, and the molding part is located at an opening of the cavity; the second mold assembly has a first state of being assembled with the first mold assembly and a second state of being separated from the first mold assembly; when the second mold assembly is in the first state, at least part of the second mold assembly is located in the cavity, a first cavity and a second cavity which are communicated with each other are defined by the second mold assembly, the cavity and the forming part, the first cavity at least forms an appearance forming space of the water tank cover, and the second cavity at least forms an appearance forming space of the holding piece. The utility model solves the problems of lower assembly efficiency and higher cost of the water tank.

Description

Technical Field

[0001] This application relates to the field of cleaning device processing technology, and more specifically, to an injection molding device, a water tank, and cleaning equipment. Background Technology

[0002] Cleaning equipment such as sweepers, mops, and scrubbers are generally equipped with water tanks. These tanks provide clean water to the mop to wet or clean it. The water tank typically consists of two parts: a body and a lid. To facilitate opening and closing, a handle is provided on the lid. However, assembling the lid and handle is cumbersome, resulting in low assembly efficiency and high cost. Utility Model Content

[0003] The main objective of this application is to provide an injection molding apparatus, a water tank, and a cleaning device to solve the problems of low assembly efficiency and high cost of water tanks in the prior art.

[0004] According to one aspect of this application, an injection molding apparatus is provided, comprising:

[0005] A first mold assembly is provided with a cavity and a forming part, wherein the forming part is located at the opening of the cavity;

[0006] The second mold assembly has a first state of being molded with the first mold assembly and a second state of being separated from the first mold assembly;

[0007] When the second mold assembly is in the first state, the second mold assembly is at least partially located in the cavity and forms a first cavity and a second cavity that are interconnected with the cavity and the forming part. The first cavity at least constitutes the outer forming space of the water tank cover, and the second cavity at least constitutes the outer forming space of the handle.

[0008] Further, along the first direction, the molding portion is located between opposite ends of the cavity opening, and the second mold assembly includes:

[0009] Pulling components;

[0010] A punch component, comprising a first punch and a second punch, wherein the first punch and the second punch are connected and can rotate about a first axis, and a pulling component is connected to the first punch and the second punch and can drive the first punch and the second punch to rotate from a first position where they are in contact with each other to a second position at a predetermined angle, and the first punch and the second punch located at the first position are provided with a clearance hole.

[0011] In the first state, the first punch and the second punch located at the first position are at least partially located in the cavity, and the forming part passes through the clearance hole. The second cavity is located between the inner wall surface of the forming part and the clearance hole, and the first cavity is located between the surface of the clearance hole and the inner wall surface of the cavity, where the first punch and the second punch are misaligned.

[0012] When the pulling component is subjected to external force, it drives the first punch and the second punch to rotate from the first position to the second position so as to disengage from the cavity.

[0013] Furthermore, when located in the first position, along a third direction, the projected outer contours of the portions of the first punch and the second punch located within the cavity are convex arc shapes, and the projected outer contours of the inner wall surface of the cavity are concave arc shapes that match the convex arc shapes.

[0014] Furthermore, both the first punch and the second punch include:

[0015] The connecting section is rotatably connected to the connecting section of the first punch and the connecting section of the second punch, and the pulling member is connected to the connecting section;

[0016] The core segment, along the second direction, is located at the bottom of the connecting segment. When in the first state, the core segments of both the first punch and the second punch are located within the cavity and surround the clearance hole.

[0017] Along the second direction, the core segment includes a convex arc surface near the bottom of the cavity. Along the third direction, the projected outer contour of the convex arc surface is the convex arc shape, and the opposite sides of the core segment along the third direction are both planes.

[0018] Furthermore, the central angle of the convex arc surface is no greater than fifty degrees, and along the arc length direction of the convex arc surface, the central angle is the included angle formed by the radii of the opposite ends of the convex arc surface; and / or,

[0019] The first punch and the second punch are also provided with a first groove. Along the radial direction of the convex arc surface, the first groove is located on the side of the core segment away from the convex arc surface, and the first groove is provided through in a third direction. In the first state, the first groove on the first punch and the first groove on the second punch surround to form the clearance hole.

[0020] Furthermore, along the circumferential direction of the convex arc surface, the core segment includes a first end face away from the connecting segment, and an insertion structure is provided between the first punch and the second punch, the insertion structure including:

[0021] A protrusion is disposed on the first end face of the first punch;

[0022] A recessed portion is recessed on the first end face of the second punch, and a protruding portion is adapted to the recessed portion. In the first position, the first end faces of the first punch and the second punch are attached to each other and the protruding portion is inserted into the recessed portion.

[0023] Furthermore, a rotatable connection structure is provided between the first punch and the second punch, the rotatable connection structure comprising:

[0024] A connecting block is provided on both the first punch and the second punch. Along the third direction, the connecting block on the first punch and the connecting block on the second punch are arranged opposite to each other. A connecting hole is provided through the connecting block along the third direction.

[0025] A rotating shaft, wherein the first axis is the axis of the rotating shaft, and the rotating shaft is rotatably inserted into the connecting hole and at least partially extends out of the connecting block;

[0026] The limiting member includes at least two limiting members, which are respectively disposed at opposite ends of the rotating shaft to restrict the connecting block on the rotating shaft.

[0027] Furthermore, a protruding structure is provided inside the clearance hole. Along the second direction, the protruding structure is located at the position of the clearance hole relative to the forming part and has a first gap with the forming part. The protruding structure and the inner wall surface of the clearance hole form a recessed space. The recessed space communicates with the first gap and constitutes the second cavity.

[0028] Furthermore, the recessed space includes a second groove, and the protruding structure includes:

[0029] A first protrusion, located at the first punch, comprising multiple first protrusions arranged at intervals along a third direction, and a second groove located between adjacent first protrusions; and / or

[0030] The second protrusion, located on the second punch, comprises multiple protrusions arranged at intervals along a third direction; the second groove is also located between adjacent two second protrusions; and / or

[0031] Along the second direction, the clearance hole is a concave arc surface relative to the bottom surface of the molded part.

[0032] Furthermore, the recessed space also includes a third groove. Along the first direction, the third groove is located between the first protrusion and the second protrusion and communicates with the first gap and the second groove, and the third groove is disposed through the third direction.

[0033] Furthermore, the pulling component includes:

[0034] Pull blocks, wherein the pull blocks comprise at least two;

[0035] The connecting post includes at least two posts, and at least two of the pull blocks are respectively disposed at one end of the at least two connecting posts;

[0036] At least one of the connecting posts is connected to the connecting segment of the first punch at one end away from the pull block, and at least another connecting post is connected to the connecting segment of the second punch at one end away from the pull block.

[0037] Furthermore, the second mold assembly also includes:

[0038] A pad block, which is detachably disposed at one end of the connecting section near the pull block and can move toward or away from the connecting section;

[0039] When the pull block and the pad block are subjected to an external force away from the connecting section, the pad block moves away from the connecting section by a predetermined distance along the second direction, and then the pull block pulls the first punch and the second punch to rotate from the first position to the second position.

[0040] On the other hand, this application also provides a water tank, the water tank comprising:

[0041] The housing is equipped with a liquid storage tank;

[0042] A lid, which is connected to the container body and can cover the liquid storage tank;

[0043] The gripping component is integrally formed with the box lid by the injection molding device.

[0044] Furthermore, along the second direction, a fourth groove is provided on the side of the handle near the box cover, and the fourth groove includes multiple grooves arranged along the third direction.

[0045] On the other hand, this application also provides a cleaning device, which includes the water tank mentioned above.

[0046] In this application, the second mold assembly of the injection molding apparatus has a first state of being closed with the first mold assembly and a second state of being separated from the first mold assembly. When the second mold assembly is in the first state, it is at least partially located within the cavity and forms a first cavity and a second cavity that are interconnected with the cavity and the molding part. The first cavity at least constitutes the outer forming space of the water tank lid, and the second cavity at least constitutes the outer forming space of the handle. Thus, after the second mold assembly is closed with the first mold assembly, molding slurry is injected into the first cavity and the second cavity. Since the first cavity and the second cavity are interconnected, the handle formed by the solidification and hardening of the molding slurry in the second cavity will be integrally formed with the lid formed by the solidification and hardening of the molding slurry in the first cavity. The handle can be integrally set on the lid at the same time as the lid is manufactured, eliminating the need for assembly of the lid and the handle, improving the assembly efficiency of the water tank and reducing the production cost of the water tank. Attached Figure Description

[0047] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0048] Figure 1 This is a schematic diagram of the structure of an injection molding apparatus provided in an embodiment of the present invention;

[0049] Figure 2 for Figure 1 Top view;

[0050] Figure 3 for Figure 2 AA section view;

[0051] Figure 4 This is an exploded view of the injection molding apparatus;

[0052] Figure 5 for Figure 4 Enlarged schematic diagram of part B in the middle;

[0053] Figure 6 This is a schematic diagram of the structure when the punch component is in the second position;

[0054] Figure 7 This is a schematic diagram of the rotating connection structure in the punch component;

[0055] Figure 8 A schematic diagram of the integrated structure of the box lid and handle;

[0056] Figure 9 for Figure 8 Top view;

[0057] Figure 10 for Figure 9 CC section view.

[0058] The above figures include the following reference numerals:

[0059] 10. First mold assembly; 101. Cavity; 011. First cavity; 012. Second cavity; 102. Molding part; 11. First mold core; 111. First through hole; 12. Second mold core; 13. Die core; 131. Sunken groove; 20. Second mold assembly; 21. Pulling component; 211. Pulling block; 212. Connecting post; 22. Punch component; 220. Clearance hole; 201. Concave arc surface; 221. First punch; 222. Second punch; 223. Connecting section; 224. Core section; 241. Convex arc surface; 242. First groove; 243. First end face; 244. Guide Flow channel; 225, Rotary connection structure; 251, Connecting block; 511, Connecting hole; 252, Rotating shaft; 253, Limiting component; 226, Protruding structure; 261, First protrusion; 262, Second protrusion; 227, Second groove; 228, Third groove; 23, Pad; 231, Second through hole; 30, Insertion structure; 31, Protrusion; 32, Recess; 40, Fastening structure; 41, Fastening groove; 411, First slot; 412, Second slot; 42, Fastening protrusion; 50, Box cover; 60, Holding component; 61, Fourth groove; 62, First rib; 63, Second rib. Detailed Implementation

[0060] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0061] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0062] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0063] Currently, the water tank cover 50 and handle of the cleaning equipment are designed separately. The cover 50 and handle need to be assembled together by fasteners (such as screws, bolts, etc.), which not only leads to low assembly efficiency of the water tank, but also increases costs (including the cost of fastener procurement, manual assembly, etc.).

[0064] To address the aforementioned problems, the first embodiment of this utility model provides an injection molding apparatus, please refer to [link to relevant documentation]. Figures 1 to 7 The injection molding apparatus includes a first mold assembly 10 and a second mold assembly 20. The first mold assembly 10 is provided with a cavity 101 and a molding part 102, the molding part 102 being located at the opening of the cavity 101.

[0065] like Figures 3 to 4 As shown, the first mold assembly 10 includes a first mold core 11, a second mold core 12, and a cavity mold core 13. The second mold core 12 is disposed at the bottom of the first mold core 11, and the cavity mold core 13 is sleeved inside the second mold core 12. The first mold core 11, the second mold core 12, and the cavity mold core 13 surround and form a cavity 101. A forming part 102 is disposed on the first mold core 11 and located at the opening of the cavity 101. The forming part 102 is used to define the surface of the holding member 60.

[0066] The second mold assembly 20 has a first state of being closed with the first mold assembly 10 and a second state of being separated from the first mold assembly 10. For example... Figure 3As shown, when the second mold assembly 20 is in the first state, the second mold assembly 20 is at least partially located within the cavity 101 and forms a first cavity 011 and a second cavity 012 that are interconnected with the cavity 101 and the molding part 102. The first cavity 011 at least constitutes the outer forming space of the water tank cover 50. After the molding slurry is injected into the first cavity 011 and hardened, the outer shape of the cover 50 can be obtained. The second cavity 012 at least constitutes the outer forming space of the handle 60. After the molding slurry is injected into the second cavity 012 and hardened, the outer shape of the handle 60 can be obtained.

[0067] To facilitate the injection of molding slurry (such as plastic slurry), injection channels are provided in the first mold core 11 and the second mold core 12. The injection channels communicate with the cavity 101, specifically with the first cavity 011 and the second cavity 012 mentioned below, so that the molding slurry can be injected into the cavity 101 through the injection channels to obtain the box cover 50 structure. The molding part 102 may also be provided with a corresponding injection channel so that the molding slurry can be injected into the second cavity 012 of the cavity 101 through the injection channel. In addition, the first mold assembly 10 also includes an ejector component, which may include at least one ejector rod. The at least one ejector rod passes through the die core 13 and can move relative to the die core 13 toward or away from the second mold assembly 20. The ejector rod has the ability to move to an ejection position where the box cover and the gripping component integrated structure obtained after the molding slurry has hardened is ejected from the die core 13 and the second mold core 12, and to move to an inward position where it is retracted into the die core 13. The force required to eject the box cover and the integrated handle structure is applied by the injection molding machine.

[0068] Since the first cavity 011 and the second cavity 012 are interconnected, the molding slurry will integrally form and connect the lid 50 and the handle 60 together at the connection point of the first cavity 011 and the second cavity 012. After the second mold assembly 20 switches from the first state to the second state to achieve demolding, the integrally formed structure of the lid 50 and the handle 60 can be obtained. The subsequent assembly process of the water tank does not require additional assembly steps for the lid 50 and the handle 60; the tank body and the lid 50 can be assembled together, resulting in efficient assembly and lower cost.

[0069] As can be seen, in this embodiment, the second mold assembly 20 of the injection molding device has a first state of being molded with the first mold assembly 10 and a second state of being separated from the first mold assembly 10. When the second mold assembly 20 is in the first state, the second mold assembly 20 is at least partially located in the cavity 101 and forms a first cavity 011 and a second cavity 012 that are interconnected with the cavity 101 and the molding part 102. The first cavity 011 at least constitutes the outer shape forming space of the water tank cover 50, and the second cavity 012 at least constitutes the outer shape forming space of the handle 60. Therefore, after the second mold assembly 20 and the first mold assembly 10 are closed, molding slurry is injected into the first cavity 011 and the second cavity 012. Since the first cavity 011 and the second cavity 012 are interconnected, the handle 60 formed by the solidification and hardening of the molding slurry in the second cavity 012 will be integrally formed with the box cover 50 formed by the solidification and hardening of the molding slurry in the first cavity 011. The handle 60 can be integrally set on the box cover 50 at the same time as the box cover 50 is processed, eliminating the need for assembly of the box cover 50 and the handle 60, improving the assembly efficiency of the water tank and reducing the production cost of the water tank.

[0070] Along the first direction (e.g.) Figure 3 and Figure 4 (In the direction indicated by the middle arrow X), the forming part 102 is located between the opposite ends of the opening of the cavity 101. The second mold assembly 20 includes a pulling member 21 and a punch member 22. The punch member 22 includes a first punch 221 and a second punch 222. The first punch 221 and the second punch 222 are connected and can rotate about a first axis (the first axis is the axis of the rotating shaft 252 mentioned below).

[0071] The pulling component 21 is connected to the first punch 221 and the second punch 222 and can drive the first punch 221 and the second punch 222 from a first position where they are in contact with each other (e.g., Figure 3 and Figure 4 Rotate from the position shown to a second position at a predetermined angle (as indicated). Figure 6 As shown in the figure, the first punch 221 and the second punch 222 located in the first position are surrounded by a clearance hole 220. The pulling member 21 can be connected to the demolding mechanism of the injection molding machine so that the injection molding machine can apply a demolding force to the pulling member 21, thereby enabling the pulling member 21 to drive the first punch 221 and the second punch 222 to switch from the first position to the second position to achieve demolding.

[0072] Combination Figure 1 , Figure 3 as well as Figure 4It can be seen that in the first state, the first punch 221 and the second punch 222 located in the first position are at least partially located in the cavity 101, and the forming part 102 passes through the clearance hole 220. The second cavity 012 is located between the forming part 102 and the inner wall surface of the clearance hole 220. The first cavity 011 is located between the first punch 221 and the second punch 222, which are misaligned between the surface of the clearance hole 220 and the inner wall surface of the cavity 101.

[0073] In other words, when it is necessary to close the second mold assembly 20 with the first mold assembly 10, the first punch 221 and the second punch 222 can be inserted into the cavity 101 from opposite sides of the molding part 102 along the first direction, until the first punch 221 and the second punch 222 are in the first position. While ensuring that the molding part 102 is located in the clearance hole 220 between the first punch 221 and the second punch 222, the corresponding first cavity 011 and second cavity 012 can be obtained, making the mold closing operation convenient and efficient. The molding part 102 and the bottom of the cavity 101 have a gap, so that the first punch 221 and the second punch 222 can rotate between the molding part 102 and the bottom of the cavity 101, reducing the molding slurry required for injection molding of the gripper 60, and creating a gap between the obtained gripper 60 and the surface of the lid 50, making it easier for the user to grip.

[0074] When demolding is required, the pulling member 21, when subjected to external force, drives the first punch 221 and the second punch 222 to rotate from the first position to the second position in a direction away from each other and disengage from the cavity 101. For example, driven by the pulling member 21, the first punch 221 rotates in a first clockwise direction (e.g., ...). Figure 6 The second punch 222 rotates in the direction indicated by the middle arrow S, and rotates in the second clockwise direction (as shown by the middle arrow S). Figure 6 Rotating the first punch 221 and the second punch 222 from their first position of mutual contact to a second position at a predetermined angle (e.g., when the first clockwise direction is clockwise, the second clockwise direction is counterclockwise) can cause the first punch 221 and the second punch 222 to rotate from their first position of mutual contact to a second position at a predetermined angle.

[0075] The external force received by the pulling component 21 can be provided by the injection molding machine. That is to say, in this embodiment, only by applying the external force required for demolding to the pulling component 21, the first punch 221 and the second punch 222 are rotated from the first position to the second position under the drive of the pulling component 21, which can ensure that the first punch 221 and the second punch 222 are detached from the cavity 101. There is no need to perform demolding operations on the first punch 221 and the second punch 222 separately. This achieves the integral molding of the box cover 50 and the handle 60, while making the demolding operation more efficient and convenient.

[0076] like Figure 3As shown, when in the first position, along the third direction, the projected outer contours of the portions of the first punch 221 and the second punch 222 located within the cavity 101 are convex arc-shaped, and the projected outer contours of the inner wall surface of the cavity 101 are concave arc-shaped, which matches the convex arc-shaped. Thus, along the arc direction of the concave arc-shaped or convex arc-shaped, the first punch 221 and the second punch 222 rotate around the first axis from opposite sides of the forming part 102 along the first direction to the first position, thereby surrounding the forming part 102 within the clearance hole 220 and enabling the first cavity 011 and the second cavity 012 formed therein to communicate with each other. During demolding, the first punch 221 and the second punch 222 smoothly rotate from the first position to the second position around the first axis along the concave or convex arc direction, so that the first punch 221 and the second punch 222 can be released from the cavity 101 more efficiently and conveniently at the same time. This can reduce the difficulty of the movement design of the punch component 22 during demolding operations, thereby efficiently obtaining the integrated box cover 50 and the holding component 60 structure.

[0077] In this embodiment, both the first punch 221 and the second punch 222 include a connecting section 223 and a core section 224. The connecting section 223 of the first punch 221 and the connecting section 223 of the second punch 222 are rotatably connected, and the pulling component 21 is connected to the connecting section 223. The connecting section 223 and the core section 224 can be connected together by a predetermined connection method (such as welding, riveting, or snap-fit), or they can be integrally formed. When integrally formed, the assembly of the punch component 22 is more efficient and convenient.

[0078] Along the second direction, the core segment 224 is located at the bottom of the connecting segment 223. In the first state, the core segments 224 of both the first punch 221 and the second punch 222 are located within the cavity 101 and form a clearance hole 220. Along the second direction, the core segment 224 includes a convex arc surface 241 near the bottom of the cavity 101. Along the third direction, the projected outer contour of the convex arc surface 241 is convex arc-shaped, and the opposite sides of the core segment 224 along the third direction are both planar. Thus, based on the convex arc surface 241 and planar structure of the core segment 224, during the process of the first punch 221 and the second punch 222 rotating from the first position to the second position by relying on the pulling force of the pulling member 21, the difficulty of demolding or core pulling can be reduced, thereby reducing the difficulty of motion design of the pulling member 21 and the punch member 22.

[0079] like Figure 3 and Figure 4As shown, a recessed groove 131 is provided on the side of the concave mold core 13 near the first mold core 11. The inner wall of the recessed groove 131 is a concave arc shape adapted to the convex arc surface 241. The first mold core 11 is provided with a first through hole 111 communicating with the recessed groove 131. Moreover, the hole walls on opposite sides of the first through hole 111 along the first direction are concave arc walls adapted to the convex arc surface 241. The inner walls of the recessed groove 131 and the first through hole 111 enclose the main body of the cavity 101, and the first through hole 111 constitutes the opening of the cavity 101. The molding part 102 is connected across the first through hole 111 along the third direction. As a result, the structure of the core segment 224 and the cavity 101 is more adapted, and the demolding operation is convenient and smooth, so that the box cover 50 and the handle 60 are integrally formed after demolding.

[0080] The central angle of the convex arc surface 241 (e.g.) Figure 3 The angle (indicated by α) is no greater than fifty degrees. Along the arc length of the convex surface 241, the central angle is the angle formed by the radii of the opposite ends of the convex surface 241. The size of the central angle α can include one of fifty degrees, forty-eight degrees, forty-five degrees, forty degrees, or thirty-five degrees. Therefore, by limiting the maximum value of the central angle, the first punch 221 and the second punch 222 can rotate their respective core segments 224 by a small angle, thus ensuring that the core segments 224 disengage from the first mold assembly 10, making the demolding operation more precise and efficient.

[0081] like Figure 6 As shown, the first punch 221 and the second punch 222 are also provided with a first groove 242. Along the radial direction of the convex arc surface 241, the first groove 242 is located on the side of the core segment 224 away from the convex arc surface 241, and the first groove 242 is provided through in a third direction. In the first state, the first groove 242 on the first punch 221 and the first groove 242 on the second punch 222 surround to form a clearance hole 220.

[0082] Therefore, in this embodiment, corresponding first grooves 242 are formed on the core segments 224 of the first punch 221 and the second punch 222. When the first punch 221 and the second punch 222 are in the first position, the connecting segments 223 of the first punch 221 and the second punch 222 are close to each other, and the portions of the core segments 224 of the first punch 221 and the second punch 222 located at the bottom of the first groove 242 are close to each other. The first grooves 242 on the first punch 221 and the second punch 222 form a clearance hole 220. The first grooves 242 are easy to form, and the overall structure of the punch component 22 is more compact and reliable when in the first position.

[0083] In order to facilitate faster cooling and hardening of the molding slurry injected into the second cavity 012 and the first cavity 011, such as Figure 3As shown, this embodiment also includes a flow channel 244 in the core section 224. The flow channel 244 can be traversed by a cooling medium, thereby rapidly reducing the temperature of the core section 224 and promoting the cooling and hardening of the molding slurry. The length of the flow channel 244 extends along the arc length direction of the convex surface 241. The flow channel 244 may include multiple channels (such as two, three, four, five, or more than two), along a third direction (also the width direction of the convex surface 241, e.g., ...). Figure 3 and Figure 4 (In the direction indicated by the middle arrow z), multiple flow channels 244 are arranged in sequence to improve the cooling efficiency of the core section 224 and the molding slurry.

[0084] In this embodiment, the molding part 102 includes a crossbeam. Along a third direction, the crossbeam spans the opening of the cavity 101 (i.e., the first through hole 111 of the first mold core), so that the second cavity 012 formed by the crossbeam and the punch component 22 has a strip-shaped cavity structure. As a result, the gripping member 60 formed by the hardened molding slurry in the second cavity 012 has a strip-shaped structure, which is easy for the user to grip, and makes the whole formed by the gripping member 60 and the box cover 50 more compact and beautiful, and can save the amount of molding slurry used.

[0085] Along the circumferential direction of the convex arc surface 241 (i.e., the first clockwise direction or the second clockwise direction), the core segment 224 includes a first end face 243 away from the connecting segment 223, and an insertion structure 30 is provided between the first punch 221 and the second punch 222. The insertion structure 30 includes a protrusion 31 and a recess 32. The protrusion 31 is disposed on the first end face 243 of the first punch 221. The recess 32 is recessed on the first end face 243 of the second punch 222, and the protrusion 31 and the recess 32 are adapted to each other. In the first position, the first end faces 243 of the first punch 221 and the second punch 222 are close together and the protrusion 31 is inserted into the recess 32, so that the first punch 221 and the second punch 222 in the first position are more stably and reliably close together, avoiding relative movement and misalignment between the first punch 221 and the second punch 222, and improving the yield of the cover 50 structure.

[0086] like Figure 6 and Figure 7 As shown, the first end face 243 is located at the bottom of the first groove 242. When the first end faces 243 of the first punch 221 and the second punch 222 are in the first position, they can fit together to improve the sealing performance of the clearance hole 220 formed by the first groove 242. Of course, in some embodiments, the protrusion 31 can be provided on the first end face 243 of the second punch 222, and the recess 32 can be provided on the first end face 243 of the first punch 221, or both the first end faces 243 of the first punch 221 and the second punch 222 can be provided with the protrusion 31 and the recess 32. This embodiment does not limit this to a single aspect.

[0087] To achieve a rotatable connection between the first punch 221 and the second punch 222, this embodiment provides a rotatable connection structure 225 between the first punch 221 and the second punch 222. The rotatable connection structure 225 includes a connecting block 251, a rotating shaft 252, and a limiting member 253. Both the first punch 221 and the second punch 222 are provided with a connecting block 251. Along the third direction, the connecting block 251 on the first punch 221 and the connecting block 251 on the second punch 222 are positioned opposite each other. Along the third direction, a connecting hole 511 is provided through the connecting block 251, and the connecting holes 511 in the connecting blocks 251 on the first punch 221 and the second punch 222 are interconnected.

[0088] The first axis is the axis of the rotating shaft 252, which is rotatably inserted into the connecting hole 511 and at least partially extends out of the connecting block 251. Thus, the first punch 221 and the second punch 222 can rotate around the axis of the rotating shaft 252. In this case, the diameter of the connecting hole 511 can be smaller than the outer diameter of the rotating shaft 252, facilitating installation. Of course, in some embodiments, a bearing can be provided between the connecting hole 511 and the rotating shaft 252 to allow the first punch 221 and the second punch 222 to rotate around the rotating shaft 252. At least two limiting members 253 are provided at opposite ends of the rotating shaft 252 to restrict the connecting block 251 onto the rotating shaft 252, thereby achieving a stable and reliable rotatable connection between the first punch 221 and the second punch 222 and the rotating shaft 252. The limiting member 253 can be a protrusion structure, fixed to the end of the rotating shaft 252 and at least partially opposite to the connecting block 251. The limiting component 253 can also be a bushing, which is fitted onto the rotating shaft 252, and the outer diameter of the bushing is larger than the inner diameter of the connecting hole 511, making assembly convenient.

[0089] like Figure 7 As shown, multiple connecting blocks 251 are respectively provided on the first punch 221 and the second punch 222. The multiple connecting blocks 251 are spaced apart along a third direction, and the connecting blocks 251 on the first punch 221 are located between two adjacent connecting blocks 251 on the second punch 222. This makes the connection between the first punch 221 and the second punch 222 and the rotating shaft 252 more stable and reliable. Specifically, the connecting blocks 251 are located on the side of the connecting section 223 of the first punch 221 and the second punch 222 away from the core section 224. The connecting blocks 251 can be connected to the connecting section 223 or integrally formed with the connecting section 223. The integral forming method is convenient for processing and can reduce the assembly steps of the punch component 22, making the assembly of the punch component 22 more efficient.

[0090] In this embodiment, to reduce or even avoid defects such as dents in the outer shape of the gripping member 60 after molding, such as Figures 5 to 7As shown, this embodiment also includes a protruding structure 226 within the clearance hole 220. Along the second direction, the protruding structure 226 is located at the position of the clearance hole 220 relative to the molding portion 102 and has a first gap (e.g., ...) between it and the molding portion 102. Figure 3 The gap indicated by J in the middle), and the inner wall surface of the protruding structure 226 and the clearance hole 220 surrounds a recessed space, which is connected to the first gap and constitutes the second cavity 012.

[0091] Therefore, in this embodiment, a protruding structure 226 is provided within the clearance hole 220, so that the second cavity 012 is composed of the first gap and the recessed space that are interconnected within the clearance hole 220 after the protruding structure 226 is provided, thereby reducing the volume of the second cavity 012 and thus reducing the volume of molding slurry in the second cavity 012. Because the amount of molding slurry is reduced, the temperature generated in the second cavity 012 during injection molding is lower, making it less prone to defects such as bubbles and depressions during the hardening process of the gripper 60, thus improving the structural quality of the gripper 60. Furthermore, the presence of the first gap makes the surface portion of the gripper 60 thinner, making it less likely for the molding slurry to form depressions on the surface of the gripper 60 during the hardening process, thus improving the smoothness of the surface structure of the gripper 60.

[0092] like Figure 5 As shown, the recessed space in this embodiment includes a second groove 227. The protruding structure 226 includes a first protrusion 261, which is located on the first punch 221. Multiple first protrusions 261 are arranged at intervals along a third direction, and the second groove 227 is located between adjacent first protrusions 261. In other words, in this embodiment, multiple first protrusions 261 are arranged at intervals along a third direction in the portion of the clearance hole 220 located on the first punch 221, thus obtaining multiple second grooves 227.

[0093] Multiple second grooves 227 are connected to the first gap. After the molding slurry is injected into the first gap and the second grooves 227, as... Figures 8 to 10 As shown, the grip 60 formed near the lid 50 will have a first rib 62 formed at the position corresponding to the second groove 227, and a fourth groove 61 formed at the position corresponding to the first protrusion 261. This achieves the thinning of the grip 60 to prevent surface defects while ensuring the structural strength of the grip 60. The presence of the first rib 62 and the fourth groove 61 also makes it easier for users to grip, resulting in a better grip feel.

[0094] Specifically, when the first punch 221 is provided with a first groove 242 forming the clearance hole 220, a plurality of first protrusions 261 are spaced apart along a third direction at the bottom of the groove 242, which facilitates processing. The first protrusions 261 can be integrally formed with the first groove 242.

[0095] like Figure 7 As shown, the protruding structure 226 in this embodiment may further include a second protrusion 262, which is located in the second punch 222. Multiple second protrusions 262 are arranged at intervals along a third direction, and a second groove 227 is located between adjacent second protrusions 262. In other words, in this embodiment, multiple second protrusions 262 are arranged at intervals along a third direction in the portion of the clearance hole 220 located in the second punch 222, thus obtaining multiple second grooves 227.

[0096] Multiple second grooves 227 are connected to the first gap. After the molding slurry is injected into the first gap and the second grooves 227, the side of the grip 60 near the box cover 50 will form a first rib 62 at the position corresponding to the second groove 227, and a recessed fourth groove 61 at the position corresponding to the second protrusion 262. This achieves the thinning of the grip 60 to prevent surface defects while ensuring the structural strength of the grip 60. The presence of the first rib 62 and the fourth groove 61 also makes it easier for users to grip, resulting in a better grip feel.

[0097] Specifically, when the second punch 222 is provided with a first groove 242 forming a clearance hole 220, a plurality of second protrusions 262 are spaced apart along a third direction at the bottom of the second groove 227, which facilitates processing. The second protrusions 262 can be integrally formed with the first groove 242.

[0098] If a first protrusion 261 is provided on the first punch 221, and a second protrusion 262 is also provided on the second punch 222, then the resulting gripper 60 will have a first rib 62 and a fourth groove 61 structure formed on both opposite sides along the first direction. This results in less molding slurry required when injection molding the gripper 60, a less prone surface defects, a smoother and flatter surface structure, and better product quality.

[0099] Along the second direction, the bottom surface of the clearance hole 220 relative to the molding part 102 is a concave arc surface 201, and along the third direction, the projected outer contour of the concave arc surface 201 is arc-shaped. The concave arc surface 201 allows the molten molding slurry to flow more smoothly when filling the second groove 227, reducing flow resistance, and making pressure transmission more uniform, thus preventing depressions on the surface of the holding part 60 formed by the first gap due to insufficient pressure. During the pressure holding stage, the concave arc surface 201 helps to apply pressure evenly to the molding slurry, better compensating for the cooling shrinkage of the molding slurry and reducing or even avoiding the formation of depressions. Secondly, the concave arc surface 201 also increases the contact area between the mold and the molding slurry, improving heat transfer efficiency, making the molding slurry cool more uniformly, reducing defects caused by uneven cooling, and also preventing excessive shrinkage and depressions caused by excessively high local temperatures.

[0100] like Figure 5 As shown, the recessed space in this embodiment also includes a third groove 228. Along the first direction, the third groove 228 is located between the first protrusion 261 and the second protrusion 262 and communicates with the first gap and the second groove 227. The third groove 228 is also provided through the third direction. Thus, the third groove 228 forms a corresponding second rib 63 extending along the third direction on the gripping member 60. The second rib 63 connects to the first rib 62 and is integrally formed with the first rib 62, which strengthens the structural strength of the gripping member 60 and improves the surface quality of the gripping member 60.

[0101] Specifically, when the first groove 242 is provided on the first punch 221 and the second punch 222, along the first direction, the first protrusion 261 and the second protrusion 262 are both separated from the first end face 243. When the first punch 221 and the second punch 222 are in the first position, the third groove 228 can be formed between the first protrusion 261 and the second protrusion 262.

[0102] like Figure 4 As shown, the pulling component 21 in this embodiment includes a pulling block 211 and a connecting post 212. There are at least two pulling blocks 211. There are at least two connecting posts 212, and at least two pulling blocks 211 are correspondingly disposed at one end of each of the at least two connecting posts 212. At least one connecting post 212, with its end away from the pulling block 211, is connected to the connecting section 223 of the first punch 221, and at least another connecting post 212, with its end away from the pulling block 211, is connected to the connecting section 223 of the second punch 222 via a plug-in structure 30.

[0103] Therefore, when demolding is required, the pull block 211 can be connected to the injection molding machine. Under the demolding force applied by the injection molding machine, the pull block 211 pulls the connecting column 212, causing the first punch 221 and the second punch 222 to rotate from the first position to the second position, thereby realizing the demolding operation. The pull block 211 can be adjusted according to different injection molding machines, making it convenient and flexible to use.

[0104] Furthermore, since the first punch 221 and the second punch 222 in this embodiment typically need to be constructed from profiles with high hardness (such as profiles with a Rockwell hardness value of HRC20-25), in order to prevent the first punch 221 and the second punch 222 from directly colliding with the corresponding mold plate on the injection molding machine during the demolding operation, the second mold assembly 20 in this embodiment also includes a pad block 23. The pad block 23 is detachably disposed at the end of the connecting section 223 near the pull block 211 and can move towards or away from the connecting section 223. When the pull block 211 and the pad block 23 are subjected to an external force moving away from the connecting section 223 (this external force can be the pulling force applied by the injection molding machine to the pull block 211 and the pad block 23 respectively, and the pull block 211 and the pad block 23 can be connected to the injection molding machine through corresponding screws, bolts and other fasteners), in the second direction, after the pad block 23 moves away from the connecting section 223 by a predetermined distance (that is, the pad block 23 first moves upward a predetermined distance under the pull of the injection molding machine), the pull block 211 pulls the first punch 221 and the second punch 222 to rotate from the first position to the second position. Thus, the pad block 23 can isolate the first punch 221 and the second punch 222 from the template on the injection molding machine, avoiding direct collision between the first punch 221 and the second punch 222 and the template, and the pad block 23 will not interfere with the process of the first punch 221 and the second punch 222 rotating to the second position. When the pad 23 is worn by the first punch 221 and the second punch 222, since the pad 23 is detachable, the worn pad 23 can be removed from the punch component 22 and replaced with a new pad 23, which is convenient to operate.

[0105] In this embodiment, the connecting post 212 can be detachably connected to the pull block 211, for example, by fasteners (screws, bolts, etc.). A fastening structure 40 is provided between the end of the connecting post 212 away from the pull block 211 and the connecting segment 223. The end of the connecting post 212 away from the pull block 211 is detachably connected to the connecting segment 223 through the fastening structure 40. The spacer 23 may include at least two pieces, each of which has a second through hole 231 adapted to the connecting post 212. The at least two spacers 23 are fitted onto at least two connecting posts 212 through their respective second through holes 231, positioned between the connecting section 223 and the pull block 211. Along the second direction, the area of ​​the projected outer contour of the second through hole 231 is larger than the area of ​​the projected outer contour of the connecting post 212, allowing the spacer 23 to move relative to the connecting section 223 along the axial direction of the connecting post 212 under the external force applied by the injection molding machine. Therefore, after disassembling the connecting post 212 and the connecting section 223, the spacer 23 can be removed and replaced.

[0106] The fastening structure 40 includes a fastening groove 41 and a fastening protrusion 42. The fastening groove 41 is located on the side of the connecting section 223 near the pull block 211. The fastening protrusion 42 is located on the side of the connecting post 212 near the connecting section 223. The fastening protrusion 42 is adapted to the fastening groove 41 and can be moved to a fastening position within the fastening groove 41 and a disengaged position outside the fastening groove 41. The pad 23 can be fitted onto the connecting post 212 and is located between the pull block 211 and the fastening protrusion 42. To facilitate the disassembly of the pulling component 21, such as... Figure 4 As shown, the fastening groove 41 includes a first groove 411 and a second groove 412. Along a first direction, the first groove 411 is located at the end of the connecting segment 223 away from the rotating shaft 252. Along a second direction, the second groove 412 is located at the end of the connecting segment 223 near the pull block 211. Thus, by at least partially fitting the connecting post 212 into the second groove 412, pushing the connecting post 212 along the first direction causes the fastening protrusion 42 to slide from the first groove 411 into the fastening groove 41, the pulling member 21 and the connecting segment 223 can be assembled together. For disassembly, pushing the connecting post 212 along the first direction causes the fastening protrusion 42 to move out of the first groove 411.

[0107] The second embodiment of this utility model also provides a water tank, such as Figures 8 to 10 As shown, the water tank includes a tank body, a tank cover 50, and a handle 60. The tank body is provided with a liquid storage tank. The tank cover 50 is connected to the tank body and can cover the liquid storage tank. The handle 60 is integrally formed with the tank cover 50 by an injection molding device. For details on the structure of the injection molding device, please refer to the content provided in the first embodiment of this utility model, which will not be repeated here.

[0108] Along the second direction, a fourth groove 61 is provided on the side of the grip 60 near the lid 50. Multiple fourth grooves 61 are arranged along the third direction. The fourth grooves 61 achieve an overall thinning of the grip 60, making the surface of the grip 60 less prone to dents during injection molding. A first rib 62 is provided between two adjacent fourth grooves, and a second rib 63 extending along the third direction is also provided on the side of the grip near the lid 50. This grip 60 has a stable structure, good strength, is easy to grip, and is convenient to use.

[0109] The third embodiment of this utility model also provides a cleaning device, which includes a water tank. The structure of the water tank is described in the second embodiment and will not be repeated here.

[0110] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0111] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0112] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An injection molding apparatus characterized by comprising: include: A first mold assembly (10) is provided with a cavity (101) and a forming part (102), wherein the forming part (102) is located at the opening of the cavity (101); The second mold assembly (20) has a first state of being closed with the first mold assembly (10) and a second state of being separated from the first mold assembly (10); When the second mold assembly (20) is in the first state, the second mold assembly (20) is at least partially located in the cavity (101) and surrounds the cavity (101) and the molding part (102) to form a first cavity (011) and a second cavity (012) that are interconnected. The first cavity (011) at least constitutes the outer shape forming space of the water tank cover (50), and the second cavity (012) at least constitutes the outer shape forming space of the handle (60).

2. The injection molding apparatus of claim 1, wherein Along a first direction, the forming portion (102) is located between opposite ends of the opening of the cavity (101), and the second mold assembly (20) includes: Pulling component (21); The punch component (22) includes a first punch (221) and a second punch (222). The first punch (221) and the second punch (222) are connected and can rotate around a first axis. The pulling component (21) is connected to the first punch (221) and the second punch (222) and can drive the first punch (221) and the second punch (222) to rotate from a first position where they are in contact with each other to a second position where they are at a predetermined angle. The first punch (221) and the second punch (222) located in the first position are surrounded by a clearance hole (220). In the first state, the first punch (221) and the second punch (222) located at the first position are at least partially located in the cavity (101), and the forming part (102) passes through the clearance hole (220). The second cavity (012) is located between the inner wall surface of the forming part (102) and the clearance hole (220). The first cavity (011) is located between the surface of the clearance hole (220) and the inner wall surface of the cavity (101) of the first punch (221) and the second punch (222) being misaligned. When the pulling component (21) is subjected to external force, it drives the first punch (221) and the second punch (222) to rotate from the first position to the second position to disengage from the cavity (101).

3. The injection molding apparatus of claim 2, wherein When located in the first position, along the third direction, the projected outer contour of the portion of the first punch (221) and the second punch (222) located in the cavity (101) is a convex arc shape, and the projected outer contour of the inner wall surface of the cavity (101) is a concave arc shape that matches the convex arc shape.

4. The injection molding apparatus according to claim 2 or 3, characterized in that Both the first punch (221) and the second punch (222) include: The connecting segment (223) is rotatably connected to the connecting segment (223) of the first punch (221) and the connecting segment (223) of the second punch (222), and the pulling member (21) is connected to the connecting segment (223); The core segment (224) is located at the bottom of the connecting segment (223) along the second direction. When in the first state, the core segments (224) of the first punch (221) and the second punch (222) are both located in the cavity (101) and surround the clearance hole (220). Along the second direction, the core segment (224) includes a convex arc surface (241) near the bottom of the cavity (101). Along the third direction, the projected outer contour of the convex arc surface (241) is convex arc-shaped, and the opposite sides of the core segment (224) along the third direction are both planes.

5. The injection molding apparatus of claim 4, wherein The central angle of the convex arc surface (241) is no greater than fifty degrees. Along the arc length direction of the convex arc surface (241), the central angle is the included angle formed by the radii of the opposite ends of the convex arc surface (241); and / or, The first punch (221) and the second punch (222) are also provided with a first groove (242). Along the radial direction of the convex arc surface (241), the first groove (242) is located on the side of the core segment (224) away from the convex arc surface (241), and the first groove (242) is provided through in a third direction. In the first state, the first groove (242) on the first punch (221) and the first groove (242) on the second punch (222) surround and form the clearance hole (220).

6. The injection molding apparatus of claim 4, wherein Along the circumferential direction of the convex arc surface (241), the core segment (224) includes a first end face away from the connecting segment (223), and an insertion structure (30) is provided between the first punch (221) and the second punch (222), the insertion structure (30) including: A protrusion (31) is provided on the first end face of the first punch (221); A recessed portion (32) is recessed on the first end face of the second punch (222). A protruding portion (31) is adapted to the recessed portion (32). In the first position, the first end faces of the first punch (221) and the second punch (222) are attached to each other and the protruding portion (31) is inserted into the recessed portion (32).

7. The injection molding apparatus of claim 2, wherein A rotatable connection structure (225) is provided between the first punch (221) and the second punch (222), the rotatable connection structure (225) comprising: The connecting block (251) is provided on both the first punch (221) and the second punch (222). Along the third direction, the connecting block (251) on the first punch (221) and the connecting block (251) on the second punch (222) are arranged opposite to each other. Along the third direction, the connecting block (251) is provided with a connecting hole (511). A rotating shaft (252), wherein the first axis is the axis of the rotating shaft (252), the rotating shaft (252) is rotatably inserted into the connecting hole (511) and at least partially extends out of the connecting block (251); The limiting member (253) includes at least two, and the at least two limiting members (253) are respectively disposed at opposite ends of the rotating shaft (252) to restrict the connecting block (251) on the rotating shaft (252).

8. The injection molding apparatus of claim 2, wherein The clearance hole (220) is provided with a protruding structure (226). Along the second direction, the protruding structure (226) is located at the position of the clearance hole (220) relative to the forming part (102) and has a first gap with the forming part (102). The protruding structure (226) and the inner wall surface of the clearance hole (220) form a recessed space. The recessed space communicates with the first gap and constitutes the second cavity (012).

9. A water tank characterized by The water tank includes: The housing is equipped with a liquid storage tank; A lid (50) is connected to the box body and can cover the liquid storage tank; The handle (60) is integrally formed with the box cover (50) by the injection molding apparatus according to any one of claims 1 to 8.

10. A cleaning apparatus, characterized by The cleaning equipment includes the water tank as described in claim 9.

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