Large deep cavity empty plastic storage basket built-in multi-sliding block ejection mechanism

Abstract

The utility model provides a kind of large deep cavity hollow plastic storage basket built-in multi-sliding block ejection mechanism, belong to mould technical field.It includes upper die plate and lower die plate, the upper die plate and lower die plate between being provided with four insert block ejection mechanism, the four insert block ejection mechanism includes four blocks of surrounding rectangular side insert block.The utility model cancels the ejection mechanism being set in lower die plate in existing mould, using upper die plate and four insert block ejection mechanism cooperation, when stripping, external equipment will lift the upper die plate and four insert block ejection mechanism as a whole, link with the hollow part of the inner wall of side insert block using product hollow place and profiled surface, then through upper die plate lifting assembly makes upper die plate far away from four insert block ejection mechanism, external drive assembly drives side insert block to realize separation, reinforcing rib profiled structure on forming base and the hollow part of side insert block profiled surface ensure product forming quality, this design simplifies stripping process, improves stripping efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a multi-slider ejection mechanism built into a large deep cavity hollow plastic storage basket. Background Technology

[0002] Large, deep-cavity perforated plastic storage baskets are generally injection molded. In the existing technology, after injection molding, the side inserts need to be moved to allow the core to be pulled out of the hollow part of the storage basket. Then, the product is ejected from the lower template and demolded by the ejection mechanism in the mold. The demolding process is relatively complicated.

[0003] For example, a Chinese patent discloses a hollow plastic storage basket injection molding mold [application number: 202221194547.6], which includes a lower template, a bottom mold groove in the middle of the lower template, an injection hole in the bottom mold groove, a fixing connection groove on the lower template, a storage basket bottom forming plate on the side of the lower template, and a plastic storage basket core on the side of the storage basket bottom forming plate. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a large, deep-cavity, perforated plastic storage basket with a built-in multi-slider ejection mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A large, deep-cavity, perforated plastic storage basket with a built-in multi-slider ejection mechanism includes an upper template and a lower template. A four-piece ejection mechanism is provided between the upper and lower templates. This mechanism comprises four side pieces forming a rectangle. Upper template lifting components, movably connected to the upper template, are located on the side pieces on the left and right sides of the upper template. An outward-moving drive component connected to the side pieces is provided on the upper template. A central piece is provided on the lower template and inserted into the cavity formed by the four side pieces. A molding base, fixedly connected to the central piece, protrudes from the lower template. A molding cavity is formed between the upper template, the four side pieces, the central piece, the molding base, and the lower template. A reinforcing rib molding structure for the opening side of the storage basket is provided on the molding base. The inner wall of each side piece is provided with a perforated molding surface composed of densely packed perforated molding blocks.

[0007] In the aforementioned large deep-cavity hollow plastic storage basket with built-in multi-slider ejection mechanism, a linkage rod is horizontally arranged between two adjacent side inserts. When the upper template and the four-insert ejection mechanism move away from each other, the external movement drive component can drive the four side inserts to move away from the molding cavity.

[0008] In the aforementioned large-cavity perforated plastic storage basket with built-in multi-slider ejection mechanism, the upper template lifting assembly includes a lifting driver that is tilted and fixed on the outer side wall of the side insert. The output shaft end of the lifting driver is fixedly connected to a connector with a limiting slot. The upper template is provided with a connecting groove, and a limiting slider that is inserted into the limiting slot is provided in the connecting groove.

[0009] In the aforementioned large-cavity perforated plastic storage basket with built-in multi-slider ejection mechanism, the outward movement drive assembly includes a drive rod that is tilted and fixed to the bottom of the upper template. The drive rod is inserted into the top of the side insert and slidably connected to the side insert.

[0010] In the aforementioned large-scale deep-cavity perforated plastic storage basket with built-in multi-slider ejection mechanism, the storage basket opening side reinforcing rib forming structure includes an annular opening inner edge rib forming groove that is arranged in a ring on the forming base and recessed inward. The outer edge of the forming base has an outer edge forming part, and several inwardly recessed reinforcing rib forming grooves are also arranged circumferentially between the outer edge forming part and the annular opening inner edge rib forming groove.

[0011] In the aforementioned large, deep-cavity, perforated plastic storage basket with a built-in multi-slider ejection mechanism, the intermediate insert is detachably fixed to the molding base by several screws.

[0012] In the aforementioned large-cavity perforated plastic storage basket with a built-in multi-slider ejection mechanism, a positioning block is protruding from the molding base and inserted into the middle insert.

[0013] In the aforementioned large-cavity perforated plastic storage basket with a built-in multi-slider ejection mechanism, the middle insert has a vertically arranged internal cooling channel, and the side inserts have several vertically distributed external cooling channels, with the external cooling channels at the same height in the four side inserts arranged in a ring.

[0014] In the aforementioned large-scale deep-cavity perforated plastic storage basket with built-in multi-slider ejection mechanism, the upper and lower templates are provided with four inwardly recessed positioning grooves corresponding to the side inserts, and the outer side wall of the positioning grooves has an inclined limiting part that can abut against the outer side wall of the side insert.

[0015] In the aforementioned large-cavity perforated plastic storage basket with built-in multi-slider ejection mechanism, one end of the linkage rod is fixed to the side inserts located on the left and right sides, and the other end of the linkage rod is inserted into the linkage grooves set on the side inserts located on the front and rear sides.

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

[0017] 1. This utility model eliminates the ejection mechanism set on the lower template in existing molds. Instead, it uses an upper template and a four-piece ejection mechanism. During demolding, external equipment lifts the upper template and the four-piece ejection mechanism as a whole. The product is separated from the mold by the connection between the hollow part of the product and the hollow part of the inner wall of the side piece. Then, the upper template is lifted away from the four-piece ejection mechanism by the upper template lifting component. The external movement drive component drives the side piece to move outward to achieve separation. The reinforcing rib molding structure on the molding base and the hollow part molding surface of the side piece ensure the product molding quality. This design simplifies the demolding process and improves demolding efficiency.

[0018] 2. The upper template lifting assembly adopts an inclined lifting driver. Its output shaft cooperates with the limit slider in the upper template connecting groove through a connector with a limit slot. When the lifting driver is driven, the limit slider slides in the connecting groove, realizing the smooth separation of the upper template and the side insert. This design makes the upper template lifting process precise and controllable, avoiding jamming or deviation during lifting, ensuring smooth separation of the upper template and the four insert ejection mechanism, enhancing the stability of the demolding process, and solving the problem of easy jamming in traditional lifting structures. When the upper template is lifted, the drive rod moves upward accordingly, driving the side insert to move outward through the effect of the tilt angle. This structure is simple and compact, using the lifting force of the upper template to convert into the outward movement force of the side insert, without the need for additional complex drive devices, solving the problem of cumbersome traditional outward movement drive mechanisms. At the same time, the sliding connection ensures the smoothness of the side insert movement and improves demolding efficiency.

[0019] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the four-piece ejection mechanism;

[0023] Figure 4 This is a structural diagram of the reinforcing ribs formed on the opening side of the storage basket;

[0024] Figure 5 This is a partial structural schematic diagram of the present invention. Detailed Implementation

[0025] like Figures 1-5As shown, a large, deep-cavity, perforated plastic storage basket has a built-in multi-slider ejection mechanism, including an upper template 1 and a lower template 2. A four-piece ejection mechanism 3 is provided between the upper template 1 and the lower template 2. The four-piece ejection mechanism 3 includes four side pieces 4 that are arranged in a rectangle. An upper template lifting component 5 is provided on the side pieces 4 located on the left and right sides of the upper template 1 and is movably connected to the upper template 1. An outward movement drive component is provided on the upper template 1 and is connected to the side pieces 4. A middle piece 6 is provided on the lower template 2 and is inserted into the cavity formed by the four side pieces 4. A molding base 7 is also provided on the lower template 2 and is fixedly connected to the middle piece 6. A molding cavity 8 is formed between the upper template 1, the four side pieces 4, the middle piece 6, the molding base 7 and the lower template 2. A storage basket opening side reinforcing rib molding structure 9 is provided on the molding base 7. A hollow part molding surface 10 composed of densely distributed hollow part molding blocks is also provided on the inner side wall of the side pieces 4.

[0026] This invention eliminates the ejection mechanism located on the lower mold plate in existing molds. Instead, it uses an upper mold plate and a four-piece ejection mechanism. During demolding, external equipment lifts the upper mold plate and the four-piece ejection mechanism as a whole. The product is then separated from the mold by the connection between the hollow part of the product and the hollow part of the inner wall of the side piece. The upper mold plate is then lifted away from the four-piece ejection mechanism by the upper mold plate lifting component. The external movement drive component drives the side piece to move outward to achieve separation. The reinforcing rib molding structure on the molding base and the hollow part molding surface of the side piece ensure the product molding quality. This design simplifies the demolding process and improves demolding efficiency.

[0027] Specifically, a linkage rod 11 is horizontally arranged between two adjacent side inserts 4. When the upper template 1 and the four-insert ejection mechanism 3 move away from each other, the external drive assembly can drive the four side inserts 4 to translate away from the molding cavity 8. The linkage rod between adjacent side inserts ensures that the movement of the side inserts is coordinated and consistent, avoiding uneven force on the product and damage caused by the movement of a single side insert too fast or too slow. This structure solves the problem that the product is easily deformed by the movement of the side inserts alone. At the same time, the synchronous translation makes the hollow part of the product evenly separate from the hollow part molding surface, reducing product loss during demolding.

[0028] Specifically, the upper template lifting assembly 5 includes a lifting driver 12 that is tilted and fixed to the outer wall of the side insert 4. The output shaft end of the lifting driver 12 is fixedly connected to a connector 13 with a limiting slot. The upper template 1 is provided with a connecting groove 14, and a limiting slider 15 inserted into the limiting slot is provided in the connecting groove 14. The upper template lifting assembly uses an inclined lifting driver, and its output shaft cooperates with the limiting slider in the connecting groove of the upper template through the connector with the limiting slot. When the lifting driver is driven, the limiting slider slides in the connecting groove, realizing the smooth separation of the upper template and the side insert. This design makes the lifting process of the upper template precise and controllable, avoids jamming or deviation during lifting, ensures smooth separation of the upper template and the four-insert ejection mechanism, enhances the stability of the demolding process, and solves the problem of easy jamming in traditional lifting structures.

[0029] Those skilled in the art should understand that the lifting drive can be a hydraulic cylinder, a pneumatic cylinder, or a linear motor, etc.

[0030] Specifically, the outward movement drive assembly includes a drive rod 16 that is tilted and fixed to the bottom of the upper mold plate 1. The drive rod 16 is inserted into the top of the side insert 4 and slidably connected to the side insert 4. When the upper mold plate is raised, the drive rod moves upward accordingly, driving the side insert to move outward through the tilt angle. This structure is simple and compact, utilizing the lifting force of the upper mold plate to convert into the outward movement force of the side insert. It eliminates the need for additional complex drive devices, solving the problem of the cumbersome nature of traditional outward movement drive mechanisms. At the same time, the sliding connection ensures the smooth movement of the side insert and improves demolding efficiency.

[0031] Specifically, the reinforcing rib forming structure 9 on the opening side of the storage basket includes an annular inner edge rib forming groove 17 that is arranged in a ring on the forming base 7 and recessed inward. The outer edge of the forming base 7 has an outer edge forming part 18. Between the outer edge forming part 18 and the annular inner edge rib forming groove 17, a plurality of inwardly recessed reinforcing rib forming grooves 19 are also arranged circumferentially. The outer edge of the opening side of a traditional storage basket has low strength. By setting the annular inner edge rib forming groove, an inner edge rib can be formed on the inner side of the outer edge of the opening side of the storage basket. Then, by setting the reinforcing rib forming groove, the outer edge and the inner edge are connected, which can greatly increase the strength of the outer edge and improve the structural stability and service life of the product opening side.

[0032] Preferably, the intermediate insert 6 is detachably fixed to the molding base 7 by several screws. This detachable fixing facilitates the installation, removal, and replacement of the intermediate insert. When producing storage baskets of different specifications, a suitable intermediate insert can be quickly replaced without replacing the entire molding base. This design solves the problem of difficulty in replacing traditionally fixed intermediate inserts, improving the versatility and flexibility of the mold and shortening product changeover time.

[0033] Preferably, a positioning block 20 protrudes from the molding base 7 and is inserted into the intermediate insert 6. The positioning block on the molding base is inserted into the intermediate insert to accurately position the intermediate insert. The positioning block ensures that the intermediate insert is accurately positioned on the molding base, avoiding deviation of the intermediate insert that would cause dimensional deviation of the molding cavity, and ensuring the molding accuracy of the product. This design solves the problem of inaccurate positioning during the installation of the intermediate insert, enhances the stability of the connection between the intermediate insert and the molding base, and reduces product scrap caused by positioning deviation.

[0034] Specifically, the central insert 6 has a vertically arranged inner cooling channel 21, and the side inserts 4 have several vertically distributed outer cooling channels 22, with the outer cooling channels 22 at the same height in the four side inserts 4 arranged in a ring. The inner cooling channels in the central insert and the outer cooling channels in the side inserts, with the outer cooling channels at the same height arranged in a ring, allow the cooling medium to flow evenly around the molding cavity. The inner cooling channels cool the central part, while the outer cooling channels cool from the surrounding area; the ring-shaped distribution of the outer cooling channels ensures uniform cooling. This design solves the problem of inconsistent product cooling caused by uneven distribution of traditional cooling channels, accelerates product cooling speed, reduces deformation caused by uneven cooling, and improves product quality.

[0035] Specifically, the upper mold plate 1 and the lower mold plate 2 are recessed inwardly with four positioning grooves 23 corresponding to the side inserts 4. The outer wall of each positioning groove 23 has an inclined limiting part 24 that abuts against the outer wall of the side insert 4. The positioning grooves and inclined limiting parts on the upper and lower mold plates abut against the outer wall of the side inserts, thus positioning and limiting the side inserts. During mold closing, the positioning grooves guide the side inserts to their accurate positions, and the inclined limiting parts ensure that the side inserts fit tightly against the mold plates, preventing the side inserts from shifting during injection molding. This design solves the problem of inaccurate positioning of the side inserts during mold closing, ensures the sealing and dimensional accuracy of the molding cavity, and reduces overflow during injection molding.

[0036] Specifically, one end of the linkage rod 11 is fixed to the side inserts 4 located on the left and right sides, and the other end of the linkage rod 11 is inserted into the linkage grooves provided on the front and rear side inserts 4. One end of the linkage rod is fixed to the left and right side inserts, and the other end is inserted into the linkage grooves of the front and rear side inserts, thus creating a linkage between the left and right side inserts and the front and rear side inserts. When one side insert moves, the linkage rod drives the other side inserts to move synchronously, ensuring that the four side inserts always maintain a closed rectangular shape. This design solves the problems of poor linkage and easy positional deviation in traditional side inserts, ensuring the coordination of side insert movement during core pulling and demolding, and further improving the stability and efficiency of demolding.

[0037] The working principle of this utility model is as follows: the upper template and the four-piece ejection mechanism are used together. During demolding, the external equipment lifts the upper template and the four-piece ejection mechanism as a whole. The product is separated by the connection between the hollow part of the product and the forming surface of the hollow part of the inner wall of the side piece. Then, the upper template is lifted away from the four-piece ejection mechanism by the upper template lifting component. The external movement drive component drives the side piece to move outward to achieve separation. The reinforcing rib forming structure on the forming base and the forming surface of the hollow part of the side piece ensure the product forming quality. This design simplifies the demolding process and improves the demolding efficiency.

[0038] Linkage rods are installed between adjacent side inserts. When the upper mold plate moves away from the four-insert ejection mechanism, the outward drive assembly can drive the four side inserts to move synchronously away from the molding cavity. The linkage rods ensure that the side inserts move in a coordinated manner, avoiding uneven force on the product caused by a single side insert moving too fast or too slow, which could lead to damage. This structure solves the problem of product deformation caused by the individual movement of traditional side inserts. At the same time, synchronous translation ensures that the hollowed-out parts of the product are evenly separated from the molding surface of the hollowed-out parts, reducing product loss during demolding. The upper mold plate lifting assembly adopts an inclined lifting driver. Its output shaft cooperates with the limit slider in the upper mold plate connecting groove through a connector with a limit slot. When the lifting driver is driven, the limit slider... The slider slides within the connecting groove, enabling the upper template and side inserts to move smoothly away from each other. This design makes the lifting process of the upper template precise and controllable, avoiding jamming or deviation during lifting, ensuring smooth separation of the upper template and the four-insert ejection mechanism, enhancing the stability of the demolding process, and solving the problem of jamming in traditional lifting structures. When the upper template is lifted, the drive rod moves upward accordingly, driving the side inserts to move outward through the tilt angle. This structure is simple and compact, utilizing the lifting force of the upper template to convert it into the outward movement force of the side inserts. No additional complex drive device is required, solving the problem of cumbersome traditional outward movement drive mechanisms. At the same time, the sliding connection ensures the smoothness of the side insert movement and improves demolding efficiency.

[0039] Traditional storage baskets have low strength on the outer edge of the opening side. By setting an annular inner edge rib forming groove, an inner edge rib can be formed on the inner side of the outer edge of the opening side of the storage basket. Then, by setting a reinforcing rib forming groove, the outer edge and the inner edge are connected, which can greatly increase the strength of the outer edge and improve the structural stability and service life of the product opening side.

[0040] 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.

Claims

1. A large, deep-cavity, perforated plastic storage basket with a built-in multi-slider ejection mechanism, comprising an upper template (1) and a lower template (2), characterized in that, A four-piece ejection mechanism (3) is provided between the upper template (1) and the lower template (2). The four-piece ejection mechanism (3) includes four side pieces (4) that enclose a rectangle. An upper template lifting component (5) that is movably connected to the upper template (1) is provided on the side pieces (4) located on the left and right sides of the upper template (1). An outward movement drive component connected to the side pieces (4) is provided on the upper template (1). A cavity formed by the four side pieces (4) is provided on the lower template (2). The middle insert (6) is provided on the lower template (2), and a forming base (7) is provided to be fixedly connected to the middle insert (6). A forming cavity (8) is formed between the upper template (1), the four side inserts (4), the middle insert (6), the forming base (7) and the lower template (2). A basket opening side reinforcing rib forming structure (9) is provided on the forming base (7). The inner side wall of the side insert (4) is also provided with a hollow forming surface (10) composed of densely distributed hollow forming blocks.

2. The large, deep-cavity, perforated plastic storage basket according to claim 1, characterized in that, A linkage rod (11) is horizontally arranged between two adjacent side inserts (4). When the upper template (1) and the four insert ejection mechanism (3) move away from each other, the outward drive assembly can drive the four side inserts (4) to move away from the molding cavity (8).

3. The large, deep-cavity, perforated plastic storage basket according to claim 2 has a built-in multi-slider ejection mechanism, characterized in that, The upper template lifting assembly (5) includes a lifting driver (12) that is tilted and fixed on the outer side wall of the side insert (4). The output shaft end of the lifting driver (12) is fixedly connected to a connector (13) with a limiting slot. The upper template (1) is provided with a connecting groove (14). A limiting slider (15) that is inserted into the limiting slot is provided in the connecting groove (14).

4. The large, deep-cavity, perforated plastic storage basket according to claim 3 has a built-in multi-slider ejection mechanism, characterized in that, The outward movement drive assembly includes a drive rod (16) that is tilted and fixed to the bottom of the upper template (1). The drive rod (16) is inserted into the top of the side insert (4) and slidably connected to the side insert (4).

5. The large, deep-cavity, perforated plastic storage basket according to claim 4 has a built-in multi-slider ejection mechanism, characterized in that, The storage basket opening side reinforcing rib forming structure (9) includes an annular opening inner edge rib forming groove (17) arranged in a ring on the forming base (7) and recessed inward. The outer edge of the forming base (7) has an outer edge forming part (18). Between the outer edge forming part (18) and the annular opening inner edge rib forming groove (17), a plurality of inwardly recessed reinforcing rib forming grooves (19) are also arranged circumferentially.

6. The large, deep-cavity, perforated plastic storage basket according to claim 5 has a built-in multi-slider ejection mechanism, characterized in that, The intermediate insert (6) is detachably fixed to the molding base (7) by a number of screws.

7. The large, deep-cavity, perforated plastic storage basket according to claim 6 has a built-in multi-slider ejection mechanism, characterized in that, The molding base (7) has a protruding positioning block (20) that is inserted into the intermediate insert (6).

8. The large, deep-cavity, perforated plastic storage basket according to claim 7 has a built-in multi-slider ejection mechanism, characterized in that, The middle insert (6) is provided with an internal cooling channel (21) vertically, and the side insert (4) is provided with a number of vertically distributed external cooling channels (22), and the external cooling channels (22) at the same height in the four side inserts (4) are adjacent to each other in a ring.

9. The large deep-cavity perforated plastic storage basket according to claim 8 has a built-in multi-slider ejection mechanism, characterized in that, The upper template (1) and lower template (2) are provided with four inwardly recessed positioning grooves (23) corresponding to the side insert (4), and the outer side wall of the positioning groove (23) has an inclined limiting part (24) that can abut against the outer side wall of the side insert (4).

10. The large deep-cavity perforated plastic storage basket according to claim 2 has a built-in multi-slider ejection mechanism, characterized in that, One end of the linkage rod (11) is fixed on the side insert (4) located on the left and right sides, and the other end of the linkage rod (11) is inserted into the linkage groove set on the side insert (4) located on the front and rear sides.

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