Injection mold for threaded milk tea cup

Abstract

The utility model relates to an injection mold for a threaded milk tea cup, and belongs to the technical field of injection molds. Comprising a top plate, a splitter plate, a fixed mold plate, a movable mold plate and a bottom plate which are sequentially arranged, a forming part protruding towards one side of the movable mold plate is arranged on the fixed mold plate, an annular piece in sliding connection is arranged in the movable mold plate, the annular piece is arranged at the bottom of the forming part in a surrounding mode, a forming cavity is formed in the connecting position of the forming part, the fixed mold plate and the annular piece, and a formed cup body is arranged in the forming cavity. A surrounding thread is arranged on the outer side wall of one end of the cup body, a forming groove corresponding to the thread structure is formed in the inner wall of the annular piece, a push plate in sliding connection is arranged in the bottom plate, a plurality of fixedly-connected push rods are arranged on the push plate, and one end of each push rod extends into the movable mold plate and is fixedly connected with the annular piece; according to the scheme, the forming groove is formed in the annular piece and connected with the forming cavity, so that a thread structure can be integrally formed on the cup body, and the thread on the cup body can be in threaded connection with the cup cover to seal the cup body.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and relates to an injection mold for a threaded milk tea cup. Background Technology

[0002] Injection molds are devices used to produce plastic products. Plastic raw materials are heated to a molten state and then injected into a pre-designed molding cavity inside the mold. Once the cavity is filled, the mold is rapidly cooled, causing the molten plastic to solidify and form the desired plastic part. Injection molding offers advantages such as high precision and high efficiency in producing plastic products. Most milk tea cups on the market are made of plastic, therefore, the cup body can also be produced using injection molds.

[0003] However, the existing injection molds for milk tea cups can only produce cups with a relatively simple structure. The cup body is a truncated cone shape with a protruding ring at the rim for heat-sealing a plastic film to prevent spillage. However, this type of cup is only for single use, which is environmentally unfriendly. Once opened, the rim cannot be resealed, making it inconvenient to carry and store. Therefore, threads could be incorporated into the rim of the milk tea cup to allow the cup body and lid to fit together and achieve a sealing function. Currently, most technologies use blow molding to produce threaded preforms, but blow molding has a long molding cycle and low production efficiency. If injection molds are used to produce the aforementioned milk tea cup products, the internal structure of the mold needs to be optimized and upgraded. Summary of the Invention

[0004] The purpose of this utility model is to address the problems existing in the current technology by proposing an injection mold for a threaded milk tea cup. The technical problem to be solved by this utility model is: how to enable the injection mold to produce threaded milk tea cup products.

[0005] The objective of this utility model can be achieved through the following technical solution: An injection mold for a threaded milk tea cup includes a top plate, a flow divider plate, a fixed template, a moving template, and a bottom plate arranged in sequence. The fixed template has a forming part protruding to one side of the moving template. The moving template has a slidingly connected annular component inside. The annular component is arranged around the bottom of the forming part. A forming cavity is provided at the connection between the forming part, the fixed template, and the annular component. A formed cup body is provided inside the forming cavity. A threaded groove is provided on the outer wall of one end of the cup body. A forming groove corresponding to the threaded structure is provided on the inner wall of the annular component. A slidingly connected push plate is provided inside the bottom plate. A plurality of fixedly connected push rods are provided on the push plate. One end of each push rod extends into the moving template and is fixedly connected to the annular component.

[0006] In this solution, after the plastic raw material is injected into the molding cavity and cooled and solidified, the cup body is formed between the molding section and the moving mold plate, while the cup mouth is formed between the annular part and the molding section. Due to the molding groove structure on the inner wall of the annular part, an integrally connected threaded structure is formed on the cup body. When the moving mold plate and the fixed mold plate separate from the mold, the push plate inside the bottom plate is pushed, causing the push plate to move towards the side closer to the moving mold plate. The push plate can drive the push rod to move, thereby pushing the annular part out from the bottom of the molding section. The annular part, carrying the formed cup body, separates from the molding section, completing demolding. Finally, the cup body is taken out from the molded part to complete the injection molding. Through the above method, by setting a molding groove inside the annular part and connecting the molding groove with the molding cavity, a threaded structure can be integrally formed on the cup body. The thread on the cup body can be threadedly connected with the cup lid to seal the cup body.

[0007] In the injection mold of the aforementioned threaded milk tea cup, the molding part is shaped like a frustum, narrower at the top and wider at the bottom. The molding part has a slidingly connected ejector rod inside, which can push the cup upwards from the inside of the molding part. The structure of the molding part facilitates cup demolding, and the ejector rod is positioned at the bottom of the main body, enabling it to move the cup.

[0008] In the injection mold of the aforementioned threaded milk tea cup, a sliding connecting plate is provided inside the base plate. The connecting plate is located between the push plate and the moving template, and the bottom of the ejector rod is fixedly connected to the connecting plate. When the push plate is pushed, it can drive the connecting plate to move together. The annular part and the ejector rod move upward together to a certain height, so that the cup body is separated from the molding part. Then, the connecting plate is pushed up separately, so that the ejector rod inside the cup body is ejected a second time, and the bottom of the cup body can be separated from the annular part, realizing automatic demolding and improving the efficiency of injection molding.

[0009] In the aforementioned injection mold for a threaded milk tea cup, the connecting plate is equipped with a fixed lower reset rod, one end of which extends to the connection between the fixed mold plate and the moving mold plate. The fixed mold plate is equipped with a fixed upper reset rod, which abuts against the lower reset rod. When the connecting plate is pushed, it can cause the lower reset rod to extend out of the moving mold plate. After demolding, the fixed mold plate and the moving mold plate close, at which point the upper reset rod abuts against the lower reset rod, pushing the connecting plate to move to its initial position. The ejector pin can then retract into the molding part, awaiting the next demolding.

[0010] In the aforementioned injection mold for a threaded milk tea cup, cooling holes are provided on the side wall of the moving mold plate, and cooling channels are provided inside the moving mold plate. The cooling channels are connected to the cooling holes and extend into the interior of the molding part. The cooling channels inside the molding part are arranged in a spiral shape. Coolant is injected from the cooling holes and flows into the cooling channels to rapidly cool the interior of the molding cavity, thereby increasing the speed of plastic material setting. The spiral arrangement of the cooling channels inside the molding part allows for better cooling of the interior of the molding cavity.

[0011] In the injection mold of the aforementioned threaded milk tea cup, cylinders are fixedly connected to the four corners of the base plate. Each cylinder has a retractable piston rod at its end, which is fixedly connected to the push plate. The cylinders can drag the piston rod to move the push plate.

[0012] In the injection mold for the aforementioned threaded milk tea cup, the top plate is provided with a feed inlet, and the flow divider plate has a flow divider mechanism inside. The bottom of the feed inlet is connected to the flow divider mechanism, and the bottom of the flow divider mechanism is provided with a connected nozzle. The bottom of the nozzle is connected to the molding cavity. Molten plastic heated to a molten state is injected from the feed inlet, and after being divided by the flow divider structure, it flows evenly into the nozzle, through which the molten liquid is injected into the molding cavity.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. In this solution, a forming groove is set inside the annular part. The forming groove is connected to the forming cavity, so that a threaded structure can be integrally formed on the cup body. The thread on the cup body can be threadedly connected to the cup lid to seal the cup body.

[0015] 2. In this solution, when the push plate is pushed, it can drive the connecting plate to move together. The ring and the ejector rod move upward together to a certain height, so that the cup body is separated from the molding part. Then, the connecting plate is pushed up separately, so that the ejector rod inside the cup body is ejected for a second time. The bottom of the cup body can be separated from the ring, realizing automatic demolding and improving the efficiency of injection molding. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a front view cross-sectional structural diagram of the feed inlet of this utility model;

[0018] Figure 3 This is a frontal half-sectional view of the structure of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the cup body and the ring component of this utility model.

[0020] In the diagram, 1 is the top plate; 1a is the feed inlet; 2 is the flow divider plate; 2a is the flow divider mechanism; 2a1 is the nozzle; 3 is the fixed template; 3a is the upper reset rod; 4 is the moving template; 4a is the cooling hole; 4b is the forming part; 4c is the cooling channel; 5 is the bottom plate; 5a is the push plate; 5a1 is the push rod; 5b is the connecting plate; 5b1 is the top rod; 5b2 is the lower reset rod; 6 is the cylinder; 6a is the piston rod; 7 is the ring part; 7a is the forming groove; 8 is the forming cavity; 9 is the cup body; 9a is the thread. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] Example

[0023] like Figure 1 As shown, the injection mold for a threaded milk tea cup includes a top plate 1, a flow divider 2, a fixed template 3, a moving template 4, and a bottom plate 5 arranged in sequence. The fixed template 3 and the moving template 4 are each composed of six small plates with the same structure. The top plate 1 is provided with a feed port 1a. The side wall of the moving template 4 is provided with several cooling holes 4a. The bottom plate 5 is provided with a slidingly connected push plate 5a. The four corners of the bottom plate 5 are provided with cylinders 6 fixedly connected to each other. The end of the cylinder 6 is provided with a piston rod 6a, and the piston rod 6a is fixedly connected to the push plate 5a.

[0024] like Figure 2 As shown, the fixed template 3 has a forming part 4b protruding towards the moving template 4. The forming part 4b is a frustum-shaped section, narrower at the top and wider at the bottom. The moving template 4 has a slidingly connected annular member 7 inside, which surrounds the bottom of the forming part 4b. A forming cavity 8 is provided at the connection between the forming part 4b, the fixed template 3, and the annular member 7. The moving template 4 has a cooling channel 4c inside, which is connected to the cooling hole 4a. The cooling channel 4c extends into the interior of the forming part 4b and is spiral-shaped. The molding section 4b is equipped with a slidingly connected push rod 5b1 inside, which can push upward from inside the molding section 4b. The bottom plate 5 is equipped with a slidingly connected connecting plate 5b, which is located between the push plate 5a and the moving template 4. The bottom of the push rod 5b1 is fixedly connected to the connecting plate 5b. The flow divider 2 is equipped with a flow divider mechanism 2a inside, and the bottom of the feed inlet 1a is connected to the flow divider mechanism 2a. The bottom of the flow divider mechanism 2a is equipped with a connected nozzle 2a1, and the bottom of the nozzle 2a1 is connected to the molding cavity 8.

[0025] like Figure 3 As shown, the push plate 5a is provided with several fixed push rods 5a1, one end of the push rod 5a1 extends into the interior of the moving template 4 and is fixedly connected to the annular part 7. The connecting plate 5b is provided with a fixed lower reset rod 5b2, one end of the lower reset rod 5b2 extends to the connection between the fixed template 3 and the moving template 4. The fixed template 3 is provided with a fixed upper reset rod 3a, and the upper reset rod 3a abuts against the lower reset rod 5b2.

[0026] like Figure 4As shown, the forming cavity 8 is provided with a formed cup body 9, and one end of the outer wall of the cup body 9 is provided with a circumferential thread 9a. The inner wall of the annular part 7 is provided with a forming groove 7a corresponding to the structure of the thread 9a.

[0027] The working principle of this solution is as follows: Figure 1-4 As shown, molten plastic heated to a molten state is injected from the inlet 1a. After being diverted by the diversion structure, it flows evenly into the nozzle 2a1. The nozzle 2a1 injects the molten liquid into each molding cavity 8. After the molding cavity 8 is filled, coolant is injected for rapid cooling and shaping. Due to the molding groove 7a structure on the inner wall of the annular part 7, an integrally connected threaded structure 9a is formed on the cup body 9. When the moving mold plate 4 separates from the fixed mold plate 3, the cylinder 6 pulls the push plate 5a to move towards the side closer to the moving mold plate 4. The push plate 5a drives the push rod 5a1 and the connecting plate 5b to move together, so that the annular part 7 and the ejector rod 5b1 move upward together to a certain height, so that the cup body 9 separates from the molding part 4b. Then, the connecting plate 5b is pushed upward separately, so that the ejector rod 5b1 inside the cup body 9 is ejected for the second time. The bottom of the cup body 9 can be separated from the annular part 7, realizing automatic demolding and improving the efficiency of injection molding.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0029] Although this document frequently uses terms such as 1. top plate; 1a. feed inlet; 2. flow divider; 2a. flow divider mechanism; 2a1. nozzle; 3. fixed template; 3a. upper reset rod; 4. moving template; 4a. cooling hole; 4b. forming part; 4c. cooling channel; 5. bottom plate; 5a. push plate; 5a1. push rod; 5b. connecting plate; 5b1. top rod; 5b2. lower reset rod; 6. cylinder; 6a. piston rod; 7. ring part; 7a. forming groove; 8. forming cavity; 9. cup body; 9a. thread, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. An injection mold for a threaded milk tea cup, comprising a top plate (1), a flow divider (2), a fixed template (3), a movable template (4), and a bottom plate (5) arranged sequentially, wherein the fixed template (3) is provided with a forming part (4b) protruding towards one side of the movable template (4), and the movable template (4) is provided with a slidingly connected annular member (7), the annular member (7) is arranged around the bottom of the forming part (4b), and a forming cavity (8) is provided at the connection between the forming part (4b), the fixed template (3), and the annular member (7), characterized in that, The forming cavity (8) is provided with a formed cup body (9). One end of the outer wall of the cup body (9) is provided with a circumferential thread (9a). The inner wall of the annular part (7) is provided with a forming groove (7a) corresponding to the thread (9a) structure. The bottom plate (5) is provided with a slidingly connected push plate (5a). The push plate (5a) is provided with a plurality of fixed push rods (5a1). One end of the push rod (5a1) extends into the moving template (4) and is fixedly connected to the annular part (7).

2. The injection mold for a threaded milk tea cup according to claim 1, characterized in that, The forming part (4b) is a frustum shape that is narrow at the top and wide at the bottom. The forming part (4b) is provided with a slidingly connected push rod (5b1) inside. The push rod (5b1) can be pushed upward from the inside of the forming part (4b).

3. The injection mold for a threaded milk tea cup according to claim 2, characterized in that, The base plate (5) is provided with a sliding connecting plate (5b) inside. The connecting plate (5b) is located between the push plate (5a) and the moving template (4). The bottom of the top rod (5b1) is fixedly connected to the connecting plate (5b).

4. The injection mold for a threaded milk tea cup according to claim 3, characterized in that, The connecting plate (5b) is provided with a fixed lower reset rod (5b2), one end of which extends to the connection between the fixed template (3) and the moving template (4). The fixed template (3) is provided with a fixed upper reset rod (3a), which abuts against the lower reset rod (5b2).

5. The injection mold for a threaded milk tea cup according to claim 1, characterized in that, The moving template (4) has cooling holes (4a) on its side wall and cooling channels (4c) inside the moving template (4). The cooling channels (4c) are connected to the cooling holes (4a) and extend into the interior of the forming part (4b). The cooling channels (4c) inside the forming part (4b) are arranged in a spiral shape.

6. The injection mold for a threaded milk tea cup according to claim 1, characterized in that, The base plate (5) has cylinders (6) fixedly connected at its four corners. The cylinders (6) have retractable piston rods (6a) at their ends, and the piston rods (6a) are fixedly connected to the push plate (5a).

7. The injection mold for a threaded milk tea cup according to claim 1, characterized in that, The top plate (1) is provided with a feed inlet (1a), and the flow divider plate (2) is provided with a flow divider mechanism (2a). The bottom of the feed inlet (1a) is connected to the flow divider mechanism (2a). The bottom of the flow divider mechanism (2a) is provided with a connected nozzle (2a1), and the bottom of the nozzle (2a1) is connected to the molding cavity (8).

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