Hollow storage basket injection mold

Abstract

A kind of hollow storage basket injection mold, including cavity plate and core plate, hot runner plate is arranged below cavity plate, hot nozzle and cavity frame, core plate and core block are arranged on core plate, flanging mold frame is arranged between cavity frame and core plate, hollow sliding block is slidably arranged on flanging mold frame, hollow sliding block, flanging mold frame and cavity frame form cavity forming part, core plate and core block form core forming part, cavity is formed between core forming part and cavity forming part, hot nozzle is communicated with cavity, and cavity is used to injection molding hollow storage basket, straight oil cylinder is arranged on the outer wall of flanging mold frame, straight oil cylinder is connected with corresponding hollow sliding block, corresponding locking mechanism is arranged in core forming part, locking mechanism locks each hollow sliding block, push plate is arranged in flanging mold frame, and push plate is used to push hollow storage basket from flanging mold frame.The scheme is reliable in locking, sliding holding force is large, mold does not rise when injection molding, demolding action is stable and reliable, and demolding is smooth.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, specifically relating to an injection mold for a hollow storage basket. Background Technology

[0002] Injection molds are commonly used tools in the production of plastic products. For example, when producing products such as perforated storage baskets, based on the product's shape and structure, the four walls of the perforated storage basket have a perforated mesh structure and flanges. However, the basket walls are relatively thin, meaning the demolding stroke required for the perforation is short, generally between 1-3mm. Therefore, existing injection molds for perforated storage baskets, in order to save costs, typically use a large slider inclined ejector demolding structure. This utilizes the ejection force of the mold to drive the large slider that mates with the perforation to slide upwards and outwards for demolding, achieving both core extraction of the perforated mesh structure and ejection of the flange inserts. However, in actual production, because the inclined ejector block is supported by an inclined ejector rod, the supporting force is small. This results in insufficient clamping force of the large slider during mold injection molding, easily causing mold bulging, leading to defects such as flash, poor product quality, and a low grade. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a hollow storage basket injection mold that uses a hydraulic cylinder for four-sided locking and direct extraction, which is reliable, has a large clamping force, and features a flanged push plate for ejection and smooth demolding.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A hollow storage basket injection mold includes a cavity cover plate and a core cover plate. A hot runner support plate is disposed under the cavity cover plate, a hot runner plate is disposed within the hot runner support plate, a hot nozzle is connected below the hot runner plate, a cavity frame is disposed under the hot runner support plate, a core plate is disposed on the core cover plate, and a core block is disposed on the core plate. A flanged mold frame is disposed between the core plate and the cavity frame. Hollowed-out sliders are slidably disposed in the front, back, left, and right directions of the flanged mold frame. The hollowed-out sliders, the flanged mold frame, and the cavity frame constitute the cavity forming part of the mold, and the core plate and the core block constitute the mold. The core forming part cooperates with the cavity forming part, and a mold cavity is formed between the core forming part and the cavity forming part. The hot nozzle is connected to the mold cavity, which is used for injection molding of the hollow storage basket. A straight-pull oil cylinder is set on the outer wall of the front, back, left and right sides of the flange mold frame. Each straight-pull oil cylinder is connected to the corresponding hollow slider. A corresponding mold locking mechanism is set in the core forming part. The mold locking mechanism locks each hollow slider. A push plate is set in the flange mold frame. The push plate is used to push the hollow storage basket out of the flange mold frame.

[0006] Furthermore, the locking mechanism includes locking modules set on the core plates corresponding to each hollow slider. The locking modules pass through the flanged mold frame and contact the outer wall of the hollow slider. The locking modules are provided with opening slots, and the cylinder rod of the straight-pull cylinder is connected to the hollow slider through the opening slots.

[0007] Furthermore, an ejection mechanism is provided between the hot runner support plate and the cavity frame. The ejection mechanism includes a pad between the hot runner support plate and the cavity frame, a push rod bottom plate and a push rod panel between the pad, a push rod connected to the push rod panel, the push rod passing through the cavity frame and the flange mold frame and connecting to the push plate, and the push plate contacting the flange of the hollow storage basket.

[0008] The injection mold for a hollow storage basket of this utility model has the following advantages compared with the prior art:

[0009] 1. The hollow sliding mechanism locks the mold, which makes the hollow sliding clamping force large and the mold locking reliable, effectively preventing mold expansion and ensuring product quality and grade;

[0010] 2. The hollow sliding mechanism is driven by a direct-pulling hydraulic cylinder to directly pull the core, ensuring smooth core pulling;

[0011] 3. The product is pushed out of the mold by the push plate, and the action is stable and the demolding is smooth. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the injection mold structure for a hollow storage basket according to this utility model;

[0013] Figure 2 This is a schematic diagram of the cavity forming part of an injection mold for a hollow storage basket according to this utility model;

[0014] Figure 3 This is a schematic diagram of the core forming part of an injection mold for a hollow storage basket according to this utility model;

[0015] Figure 4 This is a three-dimensional schematic diagram of an injection mold for a hollow storage basket according to this utility model. Detailed Implementation

[0016] The present invention will be described in detail below with reference to specific implementation examples. The following implementation examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way.

[0017] like Figure 1 — Figure 4As shown, this utility model relates to a hollow storage basket injection mold, including a cavity cover plate 1 and a core cover plate 2. A hot runner support plate 3 is provided under the cavity cover plate 1, a hot runner plate 4 is provided in the hot runner support plate, a hot nozzle 5 is connected under the hot runner plate, a cavity frame 6 is provided under the hot runner support plate, a core plate 7 is provided on the core cover plate 2, and a core block 8 is provided on the core plate. A flanged mold frame 9 is provided between the core plate 7 and the cavity frame 6. Hollowed-out sliders 10 are slidably provided in the front, back, left, and right positions of the flanged mold frame 9. The hollowed-out sliders 10, the flanged mold frame 9, and the cavity frame 6 constitute the cavity forming part of the mold. The core plate 7 and the core block 8 form a cavity forming part of the mold. The mold core forming part is used to form a mold cavity 11, which is matched with the mold cavity forming part. A hot nozzle 5 is connected to the mold cavity 11. The mold cavity 11 is used for injection molding of the hollow storage basket 12. A straight-pull oil cylinder 13 is set on the outer wall of the front, back, left and right sides of the flange mold frame 9. Each straight-pull oil cylinder 13 is connected to the corresponding hollow slider 10. A corresponding mold locking mechanism is set in the core forming part. The mold locking mechanism locks each hollow slider 10. A push plate 14 is set in the flange mold frame 9. The push plate 14 is used to push the hollow storage basket 12 out of the flange mold frame 9.

[0018] This solution provides an injection mold for a hollow storage basket. The cavity plate 1 has a sprue 30 connected to a hot runner plate 4. During injection molding, molten plastic material enters through the sprue 30, flows through the hot runner plate 4 and hot nozzles 5 into the mold cavity 11, filling it with plastic material. After molding and cooling processes, the hollow storage basket 12 is obtained. During injection molding, a clamping mechanism locks the hollow slider 10, providing strong clamping force to effectively prevent mold expansion. This results in a product free of flash and other defects, exhibiting high quality and grade. During molding, the core forming part is opened by the power of the injection molding machine, separating from the cavity forming part. The hollow storage basket 12 remains in the cavity forming part. During the mold opening process, the core forming part, along with the mold locking mechanism, disengages from the hollow slider 10. After the mold opening is completed, the straight-pull hydraulic cylinder 13 directly drives the hollow slider 10 to slide outward, causing the hollow slider 10 to be pulled out from the hollow mesh 122 of the hollow storage basket 12. Then, the ejection mechanism drives the push plate 14 to push the hollow storage basket 12 out of the flip mold frame 9. Finally, it is removed manually or by a robot, and the demolding is completed. This solution has reliable mold locking, large sliding clamping force, no mold expansion during injection, stable and reliable demolding action, and smooth demolding.

[0019] Furthermore, the locking mechanism includes locking modules 15 on the core plates 7 corresponding to each hollow slider 10. The locking modules 15 pass through the flanged mold frame 9 and contact the outer wall of the hollow slider 10. The locking modules 15 are provided with opening slots 16, and the cylinder rod 131 of the straight-pull cylinder 13 is connected to the hollow slider 10 through the opening slots 16.

[0020] The locking module 15 described in this solution is set on the core plate 7 and moves with the opening and closing of the core forming part to realize the locking and unlocking of the hollow slider 10. The locking module is provided with an opening slot 16 to facilitate the connection of the cylinder rod 131 of the straight-pull cylinder to the hollow slider 10.

[0021] Furthermore, an ejection mechanism is provided between the hot runner support plate 3 and the cavity frame 6. The ejection mechanism includes a pad 20 between the hot runner support plate 3 and the cavity frame 6, a push rod bottom plate 21 and a push rod panel 22 between the pad 20, a push rod 23 connected to the push rod panel 22, the push rod 23 passing through the cavity frame 6 and the flange mold frame 9 and connected to the push plate 14, and the push plate 14 contacting the flange 121 of the hollow storage basket 12.

[0022] The ejection mechanism described in this solution is set in the cavity forming part, which facilitates the ejection of the hollow storage basket 12 left in the cavity forming part. During ejection, the injection molding machine drives the ejector base plate 21 and ejector panel 22 to push downward, thereby driving the push plate 14 to be ejected through the ejector 23. The push plate 14 contacts the flange 121, driving the hollow storage basket 12 to be ejected from the flange mold frame 9 (cavity forming part). The demolding action is stable and smooth.

[0023] The above specific embodiments are used to explain and illustrate the present utility model, and are not intended to limit the present utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. A hollow storage basket injection mold, comprising a cavity cover plate (1) and a core cover plate (2), wherein a hot runner support plate (3) is provided under the cavity cover plate (1), a hot runner plate (4) is provided in the hot runner support plate, a hot nozzle (5) is connected under the hot runner plate, a cavity frame (6) is provided under the hot runner support plate, a core plate (7) is provided on the core cover plate (2), and a core block (8) is provided on the core plate, characterized in that: A flanged mold frame (9) is provided between the core plate (7) and the cavity frame (6). A hollow slider (10) is slidably provided in the front, back, left and right directions of the flanged mold frame (9). The hollow slider (10), the flanged mold frame (9) and the cavity frame (6) constitute the cavity forming part of the mold. The core plate (7) and the core block (8) constitute the core forming part of the mold. The core forming part cooperates with the cavity forming part and forms a mold cavity (11) between the core forming part and the cavity forming part. The hot nozzle (5) is connected. The mold cavity (11) is used for injection molding of the hollow storage basket (12). A straight-pull oil cylinder (13) is set on the outer wall of the front, back, left and right sides of the flange mold frame (9). Each straight-pull oil cylinder (13) is connected to the corresponding hollow slider (10). A corresponding mold locking mechanism is set in the core forming part. The mold locking mechanism locks each hollow slider (10). A push plate (14) is set in the flange mold frame (9). The push plate (14) is used to push the hollow storage basket (12) out of the flange mold frame (9).

2. The injection mold for a hollow storage basket as described in claim 1, characterized in that... The locking mechanism includes a locking module (15) set on the core plate (7) corresponding to each hollow slider (10). The locking module (15) passes through the flange mold frame (9) and contacts the outer wall of the hollow slider (10). An opening slot (16) is set on the locking module (15). The cylinder rod (131) of the straight-pull cylinder (13) is connected to the hollow slider (10) through the opening slot (16).

3. The injection mold for a hollow storage basket as described in claim 1, characterized in that... An ejection mechanism is provided between the hot runner support plate (3) and the cavity frame (6). The ejection mechanism includes a pad (20) between the hot runner support plate (3) and the cavity frame (6), a push rod bottom plate (21) and a push rod panel (22) between the pad (20), a push rod (23) connected to the push rod panel (22), the push rod (23) passing through the cavity frame (6) and the flange mold frame (9) and connecting to the push plate (14), and the push plate (14) contacting the flange (121) of the hollow storage basket (12).

Images