Multi-slider side core-pulling easy demolding mechanism for hollow household storage basket

Abstract

The utility model belongs to the technical field of molds, and relates to a multi-slider side core-pulling easy demolding mechanism for a hollow household storage basket. The storage basket forming die comprises a storage basket forming lower die and a storage basket forming upper die. In the injection molding process, the molding bulge is attached to the molding concave cavity to form a complete cavity, a molten material is injected into the cavity through the injection molding piece, the rib molding part is matched with the molding concave cavity to synchronously mold a plurality of rib structures of the injection molding piece, secondary welding processing is not needed, the working procedure is shortened, mold opening is performed after injection molding is completed, and the production efficiency is improved. The two sides of a molded plastic part are ejected and demolded through the side core-pulling and demolding assembly, meanwhile, rib structures of the plastic part are synchronously ejected in cooperation with the rib ejection part, multi-structure ejection is adopted, the structures, with different heights, of the plastic part can be stably ejected at the same time, the ejection range is enlarged, and the ejection efficiency is improved. And the plastic part is prevented from toppling over or the rib structures and the forming protrusions are prevented from being clamped during ejection demolding, and the overall demolding smoothness is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an easy demolding mechanism with multi-slider side core pulling for a hollow household storage basket. Background Art

[0002] As the number of small household items is increasing, more and more families are now using storage baskets. The hollow storage basket is made of plastic material and needs to be injection molded using an injection mold. Currently, in order to strengthen the structure of some hollow storage baskets, ribs are added as a strengthening structure in the empty slots to enhance the structural strength of the plastic parts. In the injection process of existing hollow storage basket molds, either the rib structure needs to be secondarily welded after molding, or there is a lack of an ejection structure corresponding to the ribs after integrally forming the ribs. During ejection, the rib structure of the plastic part is prone to getting stuck with the mold, and the smoothness of the overall demolding of the plastic part is poor, affecting the quality of the plastic part. Therefore, there is an urgent need to design an easy demolding mechanism with multi-slider side core pulling for a hollow household storage basket that can overcome the above defects.

[0003] In order to overcome the deficiencies of the prior art, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses an injection molding mold for a hollow plastic storage basket [Application No.: 202221194547.6], which includes a lower template. A bottom mold groove is provided in the middle of the lower template, an injection hole is provided in the bottom mold groove, a fixed connection groove is also provided on the lower template, a storage basket bottom forming plate is provided on the side of the lower template, and a plastic storage basket core part is provided on the side of the storage basket bottom forming plate. Summary of the Invention

[0004] The purpose of the utility model is to provide an easy demolding mechanism with multi-slider side core pulling for a hollow household storage basket aiming at the above problems.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An easy demolding mechanism with multi-slider side core pulling for a hollow household storage basket includes a lower mold for forming the storage basket and an upper mold for forming the storage basket. A forming protrusion is provided in the lower mold for forming the storage basket, a forming cavity is provided in the upper mold for forming the storage basket. The position of the forming protrusion corresponds to that of the forming cavity and their shapes are matched. An injection part is provided above the upper mold for forming the storage basket. A side core pulling and demolding assembly is provided in the lower mold for forming the storage basket, and the side core pulling and demolding assembly is matched with the shape of the forming protrusion. A plurality of rib forming parts penetrating through the forming protrusion are provided in the forming protrusion, a rib ejecting part is provided below the rib forming parts, and the rib ejecting part and the side core pulling and demolding assembly are arranged staggeredly.

[0007] In the above-mentioned multi-slider side-core-pulling and easy demolding mechanism for the hollow household storage basket, the side-core-pulling and demolding assembly includes two side-core-pulling and demolding blocks arranged in the forming protrusion. An arc portion is provided inside the side-core-pulling and demolding block, and the arc portion abuts against the middle area of the lower mold for forming the storage basket.

[0008] In the above-mentioned multi-slider side-core-pulling and easy demolding mechanism for the hollow household storage basket, a bottom supporting step is provided in the lower mold for forming the storage basket, and the bottom supporting step abuts against the bottom of the side-core-pulling and demolding block.

[0009] In the above-mentioned multi-slider side-core-pulling and easy demolding mechanism for the hollow household storage basket, an inclined ejector rod is provided at the bottom of the side-core-pulling and demolding block, and the inclined ejector rod is inclined.

[0010] In the above-mentioned multi-slider side-core-pulling and easy demolding mechanism for the hollow household storage basket, an ejector rod fixing plate is provided below the lower mold for forming the storage basket. A connecting slide is provided in the ejector rod fixing plate, and the inclined ejector rod is slidably matched with the connecting slide.

[0011] In the above-mentioned multi-slider side-core-pulling and easy demolding mechanism for the hollow household storage basket, the rib forming portion includes a plurality of rib forming grooves arranged in the forming protrusion, and the rib ejecting member is located below the rib forming grooves.

[0012] In the above-mentioned multi-slider side-core-pulling and easy demolding mechanism for the hollow household storage basket, the rib ejecting member includes a rib ejecting straight rod arranged below the rib forming groove, and the rib ejecting straight rod is slidably matched with the forming protrusion.

[0013] In the above-mentioned multi-slider side-core-pulling and easy demolding mechanism for the hollow household storage basket, the rib ejecting straight rod is connected to the ejector rod fixing plate, and the rib ejecting straight rod and the inclined ejector rod are arranged in a staggered manner.

[0014] In the above-mentioned multi-slider side-core-pulling and easy demolding mechanism for the hollow household storage basket, a plurality of limiting columns passing through the ejector rod fixing plate are provided in the ejector rod fixing plate.

[0015] In the above-mentioned multi-slider side-core-pulling and easy demolding mechanism for the hollow household storage basket, the injection molded part includes an injection molding main board arranged above the upper mold for forming the storage basket, and an injection molding main hole is provided in the injection molding main board.

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

[0017] 1. During the injection molding process of the present utility model, the lower mold for forming the storage basket and the upper mold for forming the storage basket are brought closer to each other, so that the forming protrusions are fitted with the forming cavities to form a complete cavity. The molten material is injected into the cavity through the injection part. The rib forming part cooperates with the forming cavity to simultaneously form multiple rib structures of the plastic part, without the need for secondary welding processing, shortening the process. After the injection molding is completed, the mold is opened, and the two sides of the molded plastic part are ejected and demolded through the side core-pulling demolding assembly. At the same time, the rib ejector is used to synchronously eject the rib structures of the plastic part. The multi-structure ejection can stably eject the structures at different heights of the plastic part at the same time, increasing the ejection range, avoiding the tipping of the plastic part during ejection and demolding or the jamming of the rib structure and the forming protrusion, and improving the overall smoothness of demolding.

[0018] 2. During the injection molding process of the present utility model, the side core-pulling demolding module cooperates with the arc part to form the forming protrusions and the forming cavities to form the plastic part, forming an arc transition to avoid the appearance of sharp corners. After the injection molding is completed, the mold is opened, and the two sides of the molded plastic part are ejected and demolded through the side core-pulling demolding module. The side core-pulling demolding module can assist in forming on the one hand and be used for ejection and demolding on the other hand, improving the space utilization rate.

[0019] Other advantages, objectives and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. Description of the Drawings

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

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

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

[0023] Figure 4 is the structural schematic diagram of the side core-pulling demolding assembly.

[0024] Figure 5 is the structural schematic diagram of the lower mold for forming the storage basket.

[0025] Figure 6 is the structural schematic diagram of the upper mold for forming the storage basket.

[0026] In the figure: the lower mold 1 for forming the storage basket, the upper mold 2 for forming the storage basket, the forming protrusion 3, the forming cavity 4, the injection molded part 5, the side core-pulling and demolding assembly 6, the rib forming part 7, the rib ejector 8, the side core-pulling and demolding block 9, the arc part 10, the middle area 11, the bottom supporting step 12, the inclined ejector rod 13, the ejector rod fixing plate 14, the connecting slide 15, the rib forming groove 16, the rib ejector straight rod 17, the limit post 18, the injection main board 19, the injection main hole 20. Detailed implementation manner

[0027] The present utility model will be further described below in conjunction with the accompanying drawings.

[0028] As Figure 1-6 shown, a multi-slider side core-pulling and easy demolding mechanism for a hollow household storage basket includes a lower mold 1 for forming the storage basket and an upper mold 2 for forming the storage basket. A forming protrusion 3 is provided in the lower mold 1 for forming the storage basket, and a forming cavity 4 is provided in the upper mold 2 for forming the storage basket. The positions of the forming protrusion 3 and the forming cavity 4 correspond to each other and the shapes are matched. An injection molded part 5 is provided above the upper mold 2 for forming the storage basket. A side core-pulling and demolding assembly 6 is provided in the lower mold 1 for forming the storage basket. The side core-pulling and demolding assembly 6 is matched with the shape of the forming protrusion 3. A plurality of rib forming parts 7 passing through the forming protrusion 3 are provided in the forming protrusion 3. A rib ejector 8 is provided below the rib forming part 7. The rib ejector 8 and the side core-pulling and demolding assembly 6 are arranged in a staggered manner.

[0029] In this embodiment, during the injection molding process, the lower mold 1 for forming the storage basket and the upper mold 2 for forming the storage basket are moved closer to each other so that the forming protrusion 3 and the forming cavity 4 are fitted together to form a complete cavity. The molten material is injected into the cavity through the injection molded part 5. The rib forming part 7 cooperates with the forming cavity 4 to simultaneously form multiple rib structures of the plastic part, eliminating the need for secondary welding processing, shortening the process. After the injection molding is completed, the mold is opened. The side core-pulling and demolding assembly 6 is used to eject and demold the two sides of the formed plastic part. At the same time, the rib ejector 8 is used to synchronously eject the rib structure of the plastic part. By using multiple structures for ejection, the structures at different heights of the plastic part can be stably ejected simultaneously, increasing the ejection range, avoiding the plastic part from tipping over during ejection and demolding or the rib structure getting stuck with the forming protrusion 3, and improving the overall smoothness of demolding.

[0030] Combined with Figure 1-6 shown, the side core-pulling and demolding assembly 6 includes two side core-pulling and demolding blocks 9 arranged in the forming protrusion 3. An arc part 10 is provided inside the side core-pulling and demolding block 9. The arc part 10 abuts against the middle area 11 of the lower mold 1 for forming the storage basket.

[0031] Specifically, during the injection molding process, the side core-pulling and demolding module 9 cooperates with the arc portion 10 to form the convex portion 3 and the formed cavity 4 for molding the plastic part, forming an arc transition to avoid the appearance of sharp corners. After the injection molding is completed and the mold is opened, the formed plastic part on both sides is ejected and demolded through the side core-pulling and demolding module 9. The side core-pulling and demolding module 9 can assist in molding on the one hand and is used for ejecting and demolding on the other hand, improving the space utilization rate.

[0032] Combined with Figure 5 As shown, a bottom supporting step 12 is provided in the storage basket forming lower mold 1, and the bottom supporting step 12 abuts against the bottom of the side core-pulling and demolding module 9.

[0033] In this embodiment, during injection molding, the bottom supporting step 12 abuts against the bottom of the side core-pulling and demolding module 9, which can prevent the molten material from impacting the side core-pulling and demolding module 9 and sinking, ensuring that the side core-pulling and demolding module 9 is in the correct position to assist in molding the plastic part.

[0034] An inclined ejector rod 13 is provided at the bottom of the side core-pulling and demolding module 9. The inclined ejector rod 13 is inclined. A ejector rod fixing plate 14 is provided below the storage basket forming lower mold 1. A connecting sliding table 15 is provided in the ejector rod fixing plate 14. The inclined ejector rod 13 is slidably matched with the connecting sliding table 15. The rib ejecting member 8 includes a rib ejecting straight rod 17 provided below the rib forming groove 16. The rib ejecting straight rod 17 is slidably matched with the convex portion 3. The rib ejecting straight rod 17 is connected to the ejector rod fixing plate 14, and the rib ejecting straight rod 17 and the inclined ejector rod 13 are arranged in a staggered manner.

[0035] In this embodiment, after the injection molding is completed and the mold is opened, the ejector rod fixing plate 14 is moved upward, driving the rib ejecting straight rod 17 to eject the rib structure of the plastic part. The inclined ejector rod 13 is slidably matched with the connecting sliding table 15, and the inclined ejector rod 13 drives the side core-pulling and demolding module 9 to eject and demold the formed plastic part on both sides.

[0036] The rib forming portion 7 includes a plurality of rib forming grooves 16 provided in the convex portion 3, and the rib ejecting member 8 is located below the rib forming groove 16.

[0037] In this embodiment, the rib forming groove 16 is used to assist in forming the rib structure of the plastic part.

[0038] Combined with Figure 3 As shown, a plurality of limiting columns 18 passing through the ejector rod fixing plate 14 are provided in the ejector rod fixing plate 14.

[0039] In this embodiment, the limiting columns 18 are used to limit the ejector rod fixing plate 14 to prevent the ejector rod fixing plate 14 from rotating.

[0040] Combined with Figure 1As shown, the injection molded part 5 includes an injection main board 19 disposed above the forming upper mold 2 of the storage basket, and an injection main hole 20 is provided in the injection main board 19.

[0041] In this embodiment, during the injection molding process, the molten material is injected into the mold cavity through the injection main hole 20 in the injection main board 19.

[0042] The working principle of the present utility model is as follows:

[0043] During the injection molding process, the forming lower mold 1 of the storage basket and the forming upper mold 2 of the storage basket are moved closer to each other, so that the forming protrusions 3 are fitted with the forming cavities 4 to form a complete mold cavity. The molten material is injected into the mold cavity through the injection main hole 20 in the injection main board 19. The rib forming grooves 16 cooperate with the forming cavities 4 to simultaneously form multiple rib structures of the plastic part, eliminating the need for secondary welding processing and shortening the process. The side core-pulling and demolding module 9 and the arc portion 10 cooperate to form the forming protrusions 3 and the forming cavities 4 to form the plastic part. After the injection molding is completed, the mold is opened, and the side core-pulling and demolding module 9 is used to eject and demold both sides of the formed plastic part. The side core-pulling and demolding module 9 can assist in forming on the one hand and be used for ejecting and demolding on the other hand, improving the space utilization rate.

[0044] During the injection molding, the bottom supporting step 12 abuts against the bottom of the side core-pulling and demolding module 9, which can prevent the molten material from impacting the side core-pulling and demolding module 9 and sinking, ensuring that the side core-pulling and demolding module 9 is in the correct position to assist in forming the plastic part.

[0045] After the injection molding is completed and the mold is opened, the ejector plate fixing plate 14 is moved upward, driving the rib ejecting straight rod 17 to eject the rib structure of the plastic part. The inclined ejector rod 13 is slidably engaged with the connecting sliding table 15, and the inclined ejector rod 13 drives the side core-pulling and demolding module 9 to eject and demold both sides of the formed plastic part. The limit post 18 is used to limit the ejector plate fixing plate 14 to prevent the ejector plate fixing plate 14 from rotating.

[0046] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present utility model.

[0047] Although terms such as the lower mold 1 for forming the storage basket, the upper mold 2 for forming the storage basket, the forming protrusion 3, the forming cavity 4, the injection molded part 5, the side core-pulling demolding assembly 6, the rib forming part 7, the rib ejector 8, the side core-pulling demolding block 9, the arc part 10, the middle area 11, the bottom supporting step 12, the inclined ejector rod 13, the ejector rod fixing plate 14, the connecting slide 15, the rib forming groove 16, the rib ejector straight rod 17, the limit post 18, the injection molding main board 19, and the injection molding main hole 20 are used more frequently in this text, the possibility of using other terms is not excluded. The use of these terms is only for more conveniently describing and explaining the essence of the present utility model, and interpreting them as any kind of additional limitation is contrary to the spirit of the present utility model.

Claims

1. A hollow household storage basket multi-slider side core-pulling easy demoulding mechanism, comprising a storage basket forming lower mold (1) and a storage basket forming upper mold (2), characterized in that: The storage basket molding lower mold (1) is provided with a molding protrusion (3), the storage basket molding upper mold (2) is provided with a molding cavity (4), the molding protrusion (3) corresponds to the molding cavity (4) in position and has a shape that matches the molding cavity (4), an injection molded part (5) is provided above the storage basket molding upper mold (2), a side core-pulling demoulding component (6) is provided inside the storage basket molding lower mold (1), the side core-pulling demoulding component (6) matches the shape of the molding protrusion (3), a plurality of rib molding parts (7) passing through the molding protrusion (3) are provided inside the molding protrusion (3), a rib ejector (8) is provided below the rib molding part (7), and the rib ejector (8) and the side core-pulling demoulding component (6) are arranged alternately.

2. The hollow household storage basket multi-slider side core-pulling easy demoulding mechanism according to claim 1 is characterized in that: The side core-pulling demoulding assembly (6) comprises two side core-pulling demoulding modules (9) arranged in the forming protrusion (3), and the inner side of the side core-pulling demoulding module (9) is provided with an arc portion (10), and the arc portion (10) is abutted against the middle area (11) of the storage basket forming lower mold (1).

3. The hollow household storage basket multi-slider side core-pulling easy demoulding mechanism according to claim 2 is characterized in that: A bottom supporting step (12) is provided in the storage basket forming lower die (1), and the bottom supporting step (12) abuts against the bottom of the side core pulling and stripping module (9).

4. The hollow household storage basket multi-slider side core-pulling easy demoulding mechanism according to claim 3 is characterized in that: A slanted push rod (13) is provided at the bottom of the side core-pulling and stripping module (9), and the slanted push rod (13) is arranged in an inclined manner.

5. The hollow household storage basket multi-slider side core-pulling easy demoulding mechanism according to claim 4 is characterized in that: A push rod fixing plate (14) is provided below the storage basket forming lower die (1), a connecting slide (15) is provided inside the push rod fixing plate (14), and the inclined push rod (13) is slidably matched with the connecting slide (15).

6. The hollow household storage basket multi-slider side core-pulling easy demoulding mechanism according to claim 5, characterized in that: The rib forming portion (7) comprises a plurality of rib forming grooves (16) arranged in the forming protrusion (3), and the rib ejection piece (8) is located below the rib forming grooves (16).

7. The hollow household storage basket multi-slider side core-pulling easy demoulding mechanism according to claim 6, characterized in that: The rib ejection member (8) comprises a rib ejection straight rod (17) arranged below the rib forming groove (16), and the rib ejection straight rod (17) is slidably matched with the forming protrusion (3).

8. The hollow household storage basket multi-slider side core-pulling easy demoulding mechanism according to claim 7, characterized in that: The rib ejecting straight rod (17) is connected to the ejector fixing plate (14), and the rib ejecting straight rod (17) and the inclined ejector rod (13) are arranged alternately.

9. The hollow household storage basket multi-slider side core-pulling easy demoulding mechanism according to claim 8, characterized in that: A plurality of limiting columns (18) penetrating through the push rod fixing plate (14) are arranged in the push rod fixing plate (14).

10. The hollow household storage basket multi-slider side core-pulling easy demoulding mechanism according to claim 9, characterized in that: The injection molded part (5) comprises an injection molded main board (19) arranged above the storage basket forming upper mold (2), and an injection molded main hole (20) is provided in the injection molded main board (19).

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