Box cover forming die

Abstract

The utility model discloses a box cover forming die which comprises a base and further comprises a placing table rotationally installed on the upper portion of the base, two forming plates are movably placed on the upper portion of the placing table, and a forming cavity used for forming a box cover in an injection molding mode is formed between the two forming plates in a coupling mode. And the driving mechanism is arranged on the other side of the placing table. The placing table is rotatably mounted on the base, the placing table and even the two coupled forming plates can be rotated, specifically, the placing table is driven by the driving mechanism to drive the two coupled forming plates to perform rotary centrifugal injection molding, injection molding materials are thrown to the edge of the forming cavity through centrifugal force, and a cavity is formed in the center of the injection molding cavity. The centrifugal force can extrude the injection molding material to avoid bubbles in the box cover, the centrifugal injection molding enables the material to be accumulated from the edge of the injection molding cavity to the inside, the problem that bubbles appear on the upper portion of the injection molding cavity is also solved, and bad output of the box cover is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of mold processing technology, and in particular relates to a box lid forming mold. Background Technology

[0002] A mold is a tool used to manufacture products. It shapes materials into products of specific shapes and sizes through heating, compression, or other methods. Molds are widely used in the processing of materials such as plastics, metals, and rubber, and are indispensable tools in industrial production.

[0003] In the production of box lids, molds are required for injection molding.

[0004] However, traditional technology has some problems: the lid is flat and during injection molding, the injection material spreads from the center to the edge, and air bubbles are generated during the injection process. This not only affects the overall strength of the lid, but also causes pits on the surface of the molded lid when the air bubbles are at the top, resulting in defective products. Utility Model Content

[0005] In view of the problems existing in the prior art, this utility model provides a box lid forming mold, which solves the problem of air bubbles being generated during the injection molding process. This not only affects the overall strength of the box lid, but also causes pits on the surface of the molded box lid when the air bubbles are located at the top, resulting in defects.

[0006] This utility model is implemented as follows: a box lid forming mold includes a base and a placement platform rotatably mounted on the upper part of the base. A forming plate is movably placed on the upper part of the placement platform. There are two forming plates, and a forming cavity for injection molding a box lid is coupled between the two forming plates. A driving mechanism is provided on the other side of the placement platform. The placement platform is driven by the driving mechanism to perform a rotational centrifugal injection molding action with the two coupled forming plates.

[0007] In a preferred embodiment of this invention, the driving mechanism includes a motor, and a support plate is fixedly connected to the upper part of one side of the base, with the motor fixedly mounted on the upper part of the support plate.

[0008] As a preferred embodiment of this utility model, a gear is rotatably mounted on the uppermost part of the base, the gear is fixed to the output end of the motor, and a toothed ring is integrally formed on the bottom of the placement platform, the toothed ring meshing with the gear.

[0009] As a preferred embodiment of the present invention, the placement platform includes a platform body, the upper part of which has a placement groove, and two coupled molding plates are fitted into the placement groove. An injection molding seat for connecting the output pipe of the injection molding machine is rotatably installed on the upper part of the upper molding plate.

[0010] As a preferred embodiment of this utility model, the bottom of the platform is further provided with a slot for inserting the robotic arm rod, and the slot is in communication with the placement groove.

[0011] As a preferred embodiment of the present invention, the platform body is further provided with limiting members on both sides. The limiting members include mounting bases, and rotating plates are rotatably mounted inside the mounting bases. The limiting plates are slidably mounted on the rotating plates, and the lower part of the limiting plates is in active contact with the edge of the forming plate located at the upper part.

[0012] In a preferred embodiment of this invention, a lead screw is rotatably mounted inside the rotating plate, and a lifting plate is screwed to the outside of the lead screw. The upper part of the lifting plate is connected to the limiting plate by a spring. The lifting plate is slidably mounted inside the rotating plate, and the lead screw extends through the limiting plate to the outside and is fixedly connected to a turntable.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention couples two molding plates and places them on a placement platform. The placement platform is rotatably mounted on a base, allowing rotation of both the platform and the two coupled molding plates. Specifically, a drive mechanism drives the placement platform to rotate and centrifugally inject the two coupled molding plates. Centrifugal force throws the injection material to the edge of the molding cavity, forming a cavity in the center of the cavity until it is filled. Centrifugal force can compress the injection material to prevent air bubbles from forming inside the lid. Furthermore, centrifugal injection causes the material to accumulate from the edge of the injection cavity inwards, which also solves the problem of air bubbles forming at the top of the cavity, greatly reducing the number of defective lids. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the injection molding seat structure provided in an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the slot structure provided in an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the rotating plate structure provided in an embodiment of the present utility model;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the rotating plate provided in an embodiment of this utility model.

[0020] In the diagram: 1. Base; 2. Support plate; 3. Motor; 4. Gear; 5. Placement platform; 6. Molding plate; 7. Injection molding base;

[0021] 301. Platform; 302. Gear ring; 303. Placement slot; 304. Limiting component; 305. Slot;

[0022] 3041, Mounting base; 3042, Rotating plate; 3043, Limiting plate; 3044, Turntable; 3045, Lead screw; 3046, Lifting plate; 3047, Spring. Detailed Implementation

[0023] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0024] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] like Figures 1 to 5 As shown, the present invention provides a box lid forming mold, including a base 1, and further including: a placement platform 5 rotatably mounted on the upper part of the base 1, a forming plate 6 movably placed on the upper part of the placement platform 5, two forming plates 6 are provided, and a forming cavity for injection molding a box lid is coupled between the two forming plates 6; a driving mechanism is provided on the other side of the placement platform 5, and the placement platform 5 is driven by the driving mechanism to perform a rotational centrifugal injection action with the two coupled forming plates 6.

[0026] A box lid forming mold, before injection molding, couples two forming plates 6 and then place them on a placement table 5;

[0027] To solve the problem of air bubbles during injection molding, the placement platform 5 is rotatably mounted on the base 1. The placement platform 5 and even the two coupled molding plates 6 can be rotated. Specifically, the placement platform 5 is driven by the drive mechanism to rotate the two coupled molding plates 6 for centrifugal injection molding. Centrifugal force throws the injection material to the edge of the molding cavity, forming a cavity in the center of the injection cavity until the injection material fills it. Centrifugal force can squeeze the injection material to prevent air bubbles from appearing inside the lid. Centrifugal injection also causes the material to accumulate from the edge of the injection cavity to the inside, which also solves the problem of air bubbles appearing in the upper part of the injection cavity, greatly reducing the defective production of lids.

[0028] In this embodiment, the driving mechanism includes a motor 3. A support plate 2 is fixedly connected to the upper part of one side of the base 1, and the motor 3 is fixedly installed on the upper part of the support plate 2. A gear 4 is also rotatably installed at the uppermost part of the base 1. The gear 4 is fixed to the output end of the motor 3. A gear ring 302 is integrally formed at the bottom of the placement platform 5, and the gear ring 302 meshes with the gear 4.

[0029] When the placement platform 5 is electrically driven, the motor 3 is started first. The motor 3 can drive the gear 4, which is rotatably mounted on the base 1, to rotate. The gear 4 meshes with the gear ring 302 at the bottom of the placement platform 5, thereby controlling the rotation of the placement platform 5.

[0030] In this embodiment, the placement platform 5 includes a platform body 301. A placement groove 303 is formed on the upper part of the platform body 301. Two coupled molding plates 6 are fitted into the placement groove 303. An injection molding seat 7 for connecting the injection molding machine output pipe is rotatably mounted on the upper part of the molding plate 6. A slot 305 for inserting a robotic arm rod is also formed at the bottom of the platform body 301, and the slot 305 communicates with the placement groove 303.

[0031] When placing two coupled molding plates 6, the two coupled molding plates 6 are fitted into the placement slot 303, and then electric-driven centrifugal injection molding is performed. The injection seat 7 is rotated so as not to affect the rotation of the placement stage 5. After the injection molding is completed, the robotic arm drives the insertion rod to insert into the slot 305, and then the two coupled molding plates 6 are taken out to prepare for the next round of injection molding.

[0032] In this embodiment, limiting members 304 are also provided on both sides of the platform 301. The limiting members 304 include a mounting base 3041, a rotating plate 3042 is rotatably mounted inside the mounting base 3041, and a limiting plate 3043 is slidably mounted on the rotating plate 3042. The lower part of the limiting plate 3043 is in active contact with the edge of the upper forming plate 6. A lead screw 3045 is also rotatably mounted inside the rotating plate 3042. A lifting plate 3046 is screwed to the outside of the lead screw 3045. The upper part of the lifting plate 3046 is connected to the limiting plate 3043 through a spring 3047. The lifting plate 3046 is slidably mounted inside the rotating plate 3042. The lead screw 3045 passes through the limiting plate 3043 and extends to the outside, where it is fixedly connected to a turntable 3044.

[0033] When placing the two coupled molding plates 6, care must be taken to ensure that the centrifugal force does not throw the upper molding plate 6 out. Therefore, the user rotates the rotating plate 3042 perpendicular to the platform 301 and pulls the limiting plate 3043 to contact the upper molding plate 6. The two molding plates 6 are limited by the tension of the spring 3047. The user can also control the rotation of the lead screw 3045 by rotating the turntable 3044, thereby controlling the lifting plate 3046, which is slidably installed inside the rotating plate 3042, to rise and fall, changing the tension of the spring 3047 on the limiting plate 3043, and adjusting the limiting force of the two molding plates 6.

[0034] The working principle of this utility model:

[0035] Before injection molding, two molding plates 6 are coupled and then placed on the placement platform 5. To solve the problem of air bubbles during injection molding, the placement platform 5 is rotatably mounted on the base 1. The placement platform 5 and even the two coupled molding plates 6 can be rotated. Specifically, the placement platform 5 is driven by the drive mechanism to rotate the two coupled molding plates 6 for centrifugal injection molding. Centrifugal force throws the injection material to the edge of the molding cavity, forming a cavity in the center of the injection cavity until the injection material fills it. Centrifugal force can squeeze the injection material to prevent air bubbles from appearing inside the lid. Centrifugal injection also causes the material to accumulate from the edge of the injection cavity to the inside, which also solves the problem of air bubbles appearing in the upper part of the injection cavity, greatly reducing the defective production of lids.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A box lid forming mold, comprising a base (1), characterized in that: Also includes: A placement platform (5) is rotatably installed on the upper part of the base (1). A molding plate (6) is movably placed on the upper part of the placement platform (5). There are two molding plates (6), and a molding cavity for injection molding a box cover is coupled between the two molding plates (6). A drive mechanism is provided on the other side of the placement platform (5). The placement platform (5) is driven by the drive mechanism to perform a rotational centrifugal injection molding action with the two coupled molding plates (6).

2. The box lid forming mold as described in claim 1, characterized in that: The driving mechanism includes a motor (3), and a support plate (2) is fixedly connected to the upper part of one side of the base (1), and the motor (3) is fixedly installed on the upper part of the support plate (2).

3. The box lid forming mold as described in claim 2, characterized in that: A gear (4) is rotatably mounted on the uppermost part of the base (1). The gear (4) is fixed to the output end of the motor (3). A toothed ring (302) is integrally formed on the bottom of the placement platform (5). The toothed ring (302) meshes with the gear (4).

4. The box lid forming mold as described in claim 1, characterized in that: The placement platform (5) includes a platform body (301), and a placement groove (303) is provided on the upper part of the platform body (301). Two coupled molding plates (6) are fitted into the placement groove (303). An injection molding seat (7) for connecting the injection molding machine output pipe is rotatably installed on the upper part of the molding plate (6).

5. A box lid forming mold as described in claim 4, characterized in that: The bottom of the platform (301) is also provided with a slot (305) for inserting the robotic arm rod, and the slot (305) is in communication with the placement groove (303).

6. The box lid forming mold as described in claim 4, characterized in that: The platform (301) is also provided with limiting members (304) on both sides. The limiting member (304) includes a mounting base (3041). A rotating plate (3042) is rotatably mounted inside the mounting base (3041). A limiting plate (3043) is slidably mounted on the rotating plate (3042). The lower part of the limiting plate (3043) is in active contact with the edge of the forming plate (6) located at the upper part.

7. A box lid forming mold as described in claim 6, characterized in that: Inside the rotating plate (3042), a lead screw (3045) is rotatably installed. A lifting plate (3046) is screwed to the outside of the lead screw (3045). The upper part of the lifting plate (3046) is connected to the limiting plate (3043) by a spring (3047). The lifting plate (3046) is slidably installed inside the rotating plate (3042). The lead screw (3045) extends through the limiting plate (3043) to the outside and is fixedly connected to a turntable (3044).

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