High-gloss spraying-free plastic storage box injection mold

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a highlight spraying-free plastic storage box injection mold. The storage box forming die comprises a storage box forming lower die and a storage box forming upper die. The middle concave cavity forming lower part and the middle concave cavity forming upper part are matched to form a middle concave cavity structure of the storage box accessory, and the gripper groove forming lower part and the gripper groove forming upper part are matched to form a gripper groove structure of the storage box accessory. The large-area groove forming lower part and the large-area groove forming upper part are matched to form the large-area object placing groove of the storage box accessory, an integrated injection molding structure is adopted, various groove structures of a plastic part are synchronously formed, secondary finish machining treatment is not needed, and the machining efficiency is improved. One-time forming can greatly improve the surface quality and uniformity of the highlight surface of the plastic part, and the yield and the production efficiency are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an injection mold for a high-gloss spray-free plastic storage box. Background Art

[0002] An injection mold is a tool for producing plastic products, and it is also a tool that gives plastic products a complete structure and precise dimensions. Injection molding is a processing method used in the mass production of certain parts with complex shapes. Specifically, it refers to the high-pressure injection of heated and melted plastic into the mold cavity by an injection molding machine, and after cooling and solidification, a molded product is obtained. At present, due to the diversity of storage box shapes, more and more storage box bodies or accessories have various groove structures. During the injection molding process, it is difficult for existing storage box injection molds to simultaneously mold a variety of groove structures of plastic parts, and secondary finishing treatment is required later. Multiple processing will result in poor surface quality and uniformity of the high-gloss surface of the plastic parts, and low yield and production efficiency. Therefore, it is urgent to design a high-gloss spray-free plastic storage box injection mold that can overcome the above defects.

[0003] In order to overcome the shortcomings of the prior art, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses a high-gloss spray-free injection mold that is easy to remove materials [application number: 201820592054.5], which includes a top cover and a first magnet. An injection hole is arranged above the top cover, and an upper mold frame is arranged below the injection hole. A mold core is arranged below the upper mold frame, and a cooling water channel is arranged above the mold core. A water pump is installed behind the cooling water channel, and a water tank is arranged on the side of the water pump. The first magnet is located above the mold core, and a positioning guide sleeve is arranged on the side of the mold core, a positioning column is arranged below the positioning guide sleeve, and a lower mold frame is arranged below the positioning column, a mold groove is arranged above the lower mold frame, and a top plate is arranged below the mold groove, and a second magnet is arranged below the top plate. Utility Model Content

[0004] The utility model aims to solve the above problems and provide a high-gloss spray-free plastic storage box injection mold.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-gloss spray-free plastic storage box injection mold comprises a storage box molding lower mold and a storage box molding upper mold, an injection molded part is arranged above the storage box molding upper mold, an inner panel accommodating cavity is arranged in the storage box molding lower mold, a storage box molding inner panel is arranged in the inner panel accommodating cavity, a middle concave cavity molding lower part, a gripper groove molding lower part and a large-area groove molding lower part are arranged in the storage box molding inner panel, a middle concave cavity molding upper part, a gripper groove molding upper part and a large-area groove molding upper part are arranged at the bottom of the storage box molding upper mold, the middle concave cavity molding lower part is arranged opposite to the middle concave cavity molding upper part, the gripper groove molding lower part is arranged opposite to the gripper groove molding upper part, and the large-area groove molding lower part is arranged opposite to the large-area groove molding upper part.

[0007] In the above-mentioned high-gloss spray-free plastic storage box injection mold, the central cavity molding lower part includes a central cavity molding cavity arranged in the storage box molding inner panel, and the central cavity molding upper part includes a central cavity molding protrusion arranged at the bottom of the storage box molding upper mold, and the central cavity molding cavity corresponds to the position of the central cavity molding protrusion and the shape is matched.

[0008] In the above-mentioned high-gloss spray-free plastic storage box injection mold, two side convex molding grooves are connected on both sides of the central cavity molding cavity, and two side convex molding protrusions are arranged on both sides of the central cavity molding protrusion, and the side convex molding grooves are arranged opposite to the side convex molding protrusions.

[0009] In the above-mentioned high-gloss spray-free plastic storage box injection mold, the bottom of the middle cavity molding cavity is provided with a plurality of venting hole molding protrusions symmetrical along the center line of the middle cavity molding cavity.

[0010] In the above-mentioned high-gloss spray-free plastic storage box injection mold, the gripper groove molding lower part includes two gripper groove molding grooves arranged in the storage box molding inner panel, and the gripper groove molding upper part includes two gripper groove molding protrusions arranged at the bottom of the storage box molding upper mold, and the gripper groove molding grooves correspond to the positions of the gripper groove molding protrusions and are matched in shape.

[0011] In the above-mentioned high-gloss spray-free plastic storage box injection mold, the large-area groove molding lower part includes two swing object groove molding cavities arranged in the storage box molding inner panel, and the large-area groove molding upper part includes two swing object groove molding protrusions arranged at the bottom of the storage box molding upper mold, and the swing object groove molding cavities correspond to the positions of the swing object groove molding protrusions and are matched in shape.

[0012] In the above-mentioned high-gloss spray-free plastic storage box injection mold, a mold recessed groove is provided in the storage box molding lower mold, and a mold convex frame is provided at the bottom of the storage box molding upper mold, and the mold recessed groove and the mold convex frame are arranged opposite to each other.

[0013] In the above-mentioned high-gloss spray-free plastic storage box injection mold, the injection molded part includes an injection molding main board arranged above the storage box molding upper mold, and an injection molding main hole is provided in the injection molding main board.

[0014] In the above-mentioned high-gloss spray-free plastic storage box injection mold, a large-area ejection portion is provided at the bottom of the storage box forming inner panel, and the large-area ejection portion passes through the storage box forming inner panel.

[0015] In the above-mentioned high-gloss spray-free plastic storage box injection mold, the large-area ejection part includes a plurality of straight top hole grooves arranged at the bottom of the storage box molding inner panel, and the straight top hole grooves penetrate through the storage box molding inner panel.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. The inner panel accommodating cavity in the utility model is used to accommodate the storage box molding inner panel. During the injection molding process, the storage box molding lower mold and the storage box molding upper mold are brought close to each other, so that the lower part of the middle cavity molding is in contact with the upper part of the middle cavity molding, the lower part of the gripper groove molding is in contact with the upper part of the gripper groove molding, and the lower part of the large-area groove molding is in contact with the upper part of the large-area groove molding. The molten material is injected into the cavity through the injection molding part, and the cooperation between the lower part of the middle cavity molding and the upper part of the middle cavity molding is used to form the middle cavity structure of the storage box accessory, the cooperation between the lower part of the gripper groove molding and the upper part of the gripper groove molding is used to form the gripper groove structure of the storage box accessory, and the cooperation between the lower part of the large-area groove molding and the upper part of the large-area groove molding is used to form the large-area object placement groove of the storage box accessory. An integrated injection molding structure is adopted to simultaneously mold various groove structures of the plastic parts, and no secondary finishing treatment is required. One-time molding can greatly improve the surface quality and uniformity of the high-gloss surface of the plastic parts, improve the yield rate and production efficiency.

[0018] 2. In the injection molding process of the utility model, the vent hole forming protrusion can simultaneously form the vent holes of the plastic part without the need for secondary punching, thereby ensuring the quality of the high-gloss surface of the plastic part and reducing subsequent burrs.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a partial structural schematic diagram of the utility model.

[0022] Figure 3It is a partial structural schematic diagram of the utility model in another direction.

[0023] Figure 4 It is a structural schematic diagram of a formed inner panel of a storage box.

[0024] In the figure: storage box molding lower mold 1, storage box molding upper mold 2, injection molded part 3, embedded plate accommodating cavity 4, storage box molding embedded plate 5, middle cavity molding lower part 6, gripper groove molding lower part 7, large area groove molding lower part 8, middle cavity molding upper part 9, gripper groove molding upper part 10, large area groove molding upper part 11, middle cavity molding cavity 12, middle cavity molding protrusion 13, side convex molding groove 14, side convex molding protrusion 15, air vent molding protrusion 16, gripper groove molding groove 17, gripper groove molding protrusion 18, swing object groove molding cavity 19, swing object groove molding protrusion 20, mold recessed groove 21, mold convex frame 22, injection molding main board 23, injection molding main hole 24, large area ejection part 25, straight top hole groove 26. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings.

[0026] like Figure 1-4 As shown, a high-gloss spray-free plastic storage box injection mold comprises a storage box molding lower mold 1 and a storage box molding upper mold 2, an injection molded part 3 is arranged above the storage box molding upper mold 2, an inner panel accommodating cavity 4 is arranged in the storage box molding lower mold 1, a storage box molding inner panel 5 is arranged in the inner panel accommodating cavity 4, a middle concave cavity molding lower part 6, a gripper groove molding lower part 7 and a large-area groove molding lower part 8 are arranged in the storage box molding inner panel 5, a middle concave cavity molding upper part 9, a gripper groove molding upper part 10 and a large-area groove molding upper part 11 are arranged in the bottom of the storage box molding upper mold 2, the middle concave cavity molding lower part 6 is arranged opposite to the middle concave cavity molding upper part 9, the gripper groove molding lower part 7 is arranged opposite to the gripper groove molding upper part 10, and the large-area groove molding lower part 8 is arranged opposite to the large-area groove molding upper part 11.

[0027] In this embodiment, the inner panel accommodating cavity 4 is used to accommodate the storage box molding inner panel 5. During the injection molding process, the storage box molding lower mold 1 and the storage box molding upper mold 2 are close to each other, so that the middle cavity molding lower part 6 is in contact with the middle cavity molding upper part 9, the gripper groove molding lower part 7 is in contact with the gripper groove molding upper part 10, and the large-area groove molding lower part 8 is in contact with the large-area groove molding upper part 11. The molten material is injected into the mold cavity through the injection molded part 3, and the cooperation between the middle cavity molding lower part 6 and the middle cavity molding upper part 9 is used to form The middle concave cavity structure of the storage box accessory is used to form the gripper groove structure of the storage box accessory through the cooperation between the gripper groove molding lower part 7 and the gripper groove molding upper part 10, and the large-area groove molding lower part 8 and the large-area groove molding upper part 11 are used to form the large-area placement groove of the storage box accessory. An integrated injection molding structure is adopted to simultaneously mold various groove structures of the plastic parts. There is no need for secondary finishing treatment. One-time molding can greatly improve the high-gloss surface quality and uniformity of the plastic parts, thereby improving the yield rate and production efficiency.

[0028] Combination Figure 1-4 As shown, the central concave cavity molding lower part 6 includes a central concave cavity molding cavity 12 arranged in the storage box molding inner panel 5, and the central concave cavity molding upper part 9 includes a central concave cavity molding protrusion 13 arranged at the bottom of the storage box molding upper mold 2, and the central concave cavity molding cavity 12 corresponds to the central concave cavity molding protrusion 13 in position and matches in shape.

[0029] Specifically, during the injection molding process, the middle cavity molding cavity 12 cooperates with the middle cavity molding protrusion 13 to form the middle cavity structure of the storage box accessory.

[0030] Two side convex forming grooves 14 are connected to the two sides of the middle concave cavity forming cavity 12 , and two side convex forming protrusions 15 are arranged on both sides of the middle concave cavity forming protrusion 13 . The side convex forming grooves 14 and the side convex forming protrusions 15 are arranged opposite to each other.

[0031] In this embodiment, during the injection molding process, the side convex molding groove 14 cooperates with the side convex molding protrusion 15 to form a side groove that communicates with the storage box accessory and the middle cavity structure.

[0032] Combination Figure 2 , Figure 4 As shown, a plurality of vent forming protrusions 16 symmetrically arranged along the center line of the middle cavity forming cavity 12 are provided at the bottom of the middle cavity forming cavity 12 .

[0033] In this embodiment, during the injection molding process, the vent forming protrusion 16 can simultaneously form the vent of the plastic part without the need for secondary punching, thereby ensuring the quality of the high-gloss surface of the plastic part and reducing subsequent burrs.

[0034] The grip groove forming lower part 7 includes two grip groove forming grooves 17 arranged in the storage box forming inner panel 5, and the grip groove forming upper part 10 includes two grip groove forming protrusions 18 arranged at the bottom of the storage box forming upper mold 2, and the grip groove forming grooves 17 correspond to the positions of the grip groove forming protrusions 18 and are matched in shape.

[0035] In this embodiment, during the injection molding process, the gripper groove forming groove 17 cooperates with the gripper groove forming protrusion 18 to form the gripper groove structure of the plastic part.

[0036] Combination Figure 2-4 As shown, the large-area groove molding lower part 8 includes two swing object groove molding cavities 19 arranged in the storage box molding inner panel 5, and the large-area groove molding upper part 11 includes two swing object groove molding protrusions 20 arranged at the bottom of the storage box molding upper mold 2, and the swing object groove molding cavities 19 correspond to the swing object groove molding protrusions 20 in position and are matched in shape.

[0037] In this embodiment, during the injection molding process, the swing groove forming cavity 19 cooperates with the swing groove forming protrusion 20 to form two large-area swing grooves of the plastic part.

[0038] A mold-locking recessed groove 21 is provided in the storage box molding lower mold 1 , and a mold-locking convex frame 22 is provided at the bottom of the storage box molding upper mold 2 . The mold-locking recessed groove 21 and the mold-locking convex frame 22 are arranged opposite to each other.

[0039] In this embodiment, when the mold is closed, the mold inner recess 21 fits with the mold convex frame 22 to achieve better mold sealing.

[0040] Combination Figure 1 As shown, the injection molded part 3 includes an injection molded main board 23 disposed above the storage box molding upper mold 2, and an injection molded main hole 24 is disposed in the injection molded main board 23.

[0041] In this embodiment, during the injection molding process, the molten material is injected into the mold cavity through the injection main hole 24 in the injection main board 23 to complete the injection molding.

[0042] Combination Figure 1-3 As shown, a large-area ejection portion 25 is provided at the bottom of the storage box forming inner panel 5 , and the large-area ejection portion 25 passes through the storage box forming inner panel 5 .

[0043] In this embodiment, during injection molding, the straight ejector rod is located in the large-area ejection portion 25. After the injection molding is completed, the mold is opened and the molded plastic part can be ejected and demolded in a large area by the straight ejector rod.

[0044] Combination Figure 1-3As shown, the large-area ejection portion 25 includes a plurality of straight top hole grooves 26 disposed at the bottom of the storage box forming inner insert plate 5 , and the straight top hole grooves 26 penetrate through the storage box forming inner insert plate 5 .

[0045] In this embodiment, during injection molding, the straight ejector rod is located in the straight ejector hole groove 26. After the injection molding is completed, the mold is opened, and the molded plastic part can be ejected and demolded over a large area through the straight ejector rod.

[0046] The working principle of the utility model is:

[0047] The inner panel accommodating cavity 4 is used to accommodate the storage box molding inner panel 5. During the injection molding process, the storage box molding lower mold 1 and the storage box molding upper mold 2 are brought close to each other, and the molten material is injected into the mold cavity through the injection main hole 24 in the injection main board 23. The middle cavity molding cavity 12 cooperates with the middle cavity molding protrusion 13 to form the middle cavity structure of the storage box accessories. The side convex molding groove 14 cooperates with the side convex molding protrusion 15 to form the side groove connecting the storage box accessories and the middle cavity structure. The gripper groove molding groove 17 cooperates with the gripper groove molding protrusion 18 to form the gripper groove structure of the plastic part. The swing groove molding cavity 19 cooperates with the swing groove molding protrusion 20 to form two large-area swing grooves for the plastic part. An integrated injection molding structure is adopted to simultaneously mold various groove structures of the plastic part without the need for secondary finishing. One-time molding can greatly improve the surface quality and uniformity of the high-gloss surface of the plastic part, improve the yield rate and production efficiency.

[0048] During the injection molding process, the vent hole forming protrusion 16 can simultaneously form the vent holes of the plastic part without the need for secondary punching, thereby ensuring the quality of the high-gloss surface of the plastic part and reducing subsequent burrs.

[0049] When the mold is closed, the mold inner groove 21 fits with the mold convex frame 22 to achieve better mold sealing.

[0050] During injection molding, the straight ejector pin is located in the straight ejector hole groove 26. After the injection molding is completed, the mold is opened and the molded plastic part can be ejected and demolded over a large area through the straight ejector pin.

[0051] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the spirit of the present invention.

[0052] Although this article uses the terms storage box molding lower mold 1, storage box molding upper mold 2, injection molded part 3, inner panel accommodating cavity 4, storage box molding inner panel 5, middle cavity molding lower part 6, gripper groove molding lower part 7, large area groove molding lower part 8, middle cavity molding upper part 9, gripper groove molding upper part 10, large area groove molding upper part 11, middle cavity molding cavity 12, middle cavity molding protrusion 13, side convex molding groove 14, side convex molding protrusion 15, air vent molding protrusion 16, gripper groove molding groove 17, gripper groove molding protrusion 18, swing object groove molding cavity 19, swing object groove molding protrusion 20, mold recessed groove 21, mold convex frame 22, injection molding main board 23, injection molding main hole 24, large area ejection part 25, straight top hole groove 26 and so on more frequently, it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the present invention. Any additional limitations construed by them are contrary to the spirit of the present invention.

Claims

1. A high-gloss spray-free plastic storage box injection mold, comprising a storage box molding lower mold (1) and a storage box molding upper mold (2), characterized in that: An injection molded part (3) is provided above the storage box molding upper mold (2); an inner panel accommodating cavity (4) is provided inside the storage box molding lower mold (1); a storage box molding inner panel (5) is provided inside the inner panel accommodating cavity (4); a middle cavity molding lower part (6), a gripper groove molding lower part (7) and a large-area groove molding lower part (8) are provided inside the storage box molding inner panel (5); a middle cavity molding upper part (9), a gripper groove molding upper part (10) and a large-area groove molding upper part (11) are provided at the bottom of the storage box molding upper mold (2); the middle cavity molding lower part (6) is arranged opposite to the middle cavity molding upper part (9); the gripper groove molding lower part (7) is arranged opposite to the gripper groove molding upper part (10); and the large-area groove molding lower part (8) is arranged opposite to the large-area groove molding upper part (11).

2. The high-gloss spray-free plastic storage box injection mold according to claim 1 is characterized in that: The middle cavity forming lower part (6) comprises a middle cavity forming cavity (12) arranged in the storage box forming inner panel (5), and the middle cavity forming upper part (9) comprises a middle cavity forming protrusion (13) arranged at the bottom of the storage box forming upper mold (2), and the middle cavity forming cavity (12) and the middle cavity forming protrusion (13) correspond in position and have matching shapes.

3. The high-gloss spray-free plastic storage box injection mold according to claim 2 is characterized in that: Two side convex forming grooves (14) are connected to the two sides of the middle concave cavity forming cavity (12), and two side convex forming protrusions (15) are arranged on the two sides of the middle concave cavity forming protrusion (13), and the side convex forming grooves (14) and the side convex forming protrusions (15) are arranged opposite to each other.

4. The high-gloss spray-free plastic storage box injection mold according to claim 3 is characterized in that: The bottom of the middle cavity forming cavity (12) is provided with a plurality of venting hole forming protrusions (16) symmetrically along the center line of the middle cavity forming cavity (12).

5. The high-gloss spray-free plastic storage box injection mold according to claim 4 is characterized in that: The grip groove forming lower part (7) comprises two grip groove forming grooves (17) arranged in the storage box forming inner panel (5), and the grip groove forming upper part (10) comprises two grip groove forming protrusions (18) arranged at the bottom of the storage box forming upper mold (2), and the grip groove forming grooves (17) correspond to the grip groove forming protrusions (18) in position and match in shape.

6. The high-gloss spray-free plastic storage box injection mold according to claim 5, characterized in that: The large-area groove forming lower part (8) includes two swing object groove forming cavities (19) arranged in the storage box forming inner panel (5), and the large-area groove forming upper part (11) includes two swing object groove forming protrusions (20) arranged at the bottom of the storage box forming upper mold (2), and the swing object groove forming cavities (19) and the swing object groove forming protrusions (20) correspond in position and have matching shapes.

7. The high-gloss spray-free plastic storage box injection mold according to claim 6, characterized in that: A mold-locking recessed groove (21) is provided in the storage box molding lower mold (1), and a mold-locking convex frame (22) is provided at the bottom of the storage box molding upper mold (2), and the mold-locking recessed groove (21) and the mold-locking convex frame (22) are arranged opposite to each other.

8. The high-gloss spray-free plastic storage box injection mold according to claim 7, characterized in that: The injection molded part (3) comprises an injection molded main board (23) arranged above the storage box forming upper mold (2), and an injection molded main hole (24) is provided in the injection molded main board (23).

9. The high-gloss spray-free plastic storage box injection mold according to claim 8, characterized in that: A large-area ejection portion (25) is provided at the bottom of the storage box forming inner panel (5), and the large-area ejection portion (25) passes through the storage box forming inner panel (5).

10. The high-gloss spray-free plastic storage box injection mold according to claim 9, characterized in that: The large-area ejection portion (25) comprises a plurality of straight top hole grooves (26) arranged at the bottom of the storage box forming inner insert plate (5), and the straight top hole grooves (26) penetrate through the storage box forming inner insert plate (5).

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