Large hollow plastic dirty clothes storage basket mold with four-slide synchronous core-pulling mechanism

Abstract

The utility model provides a large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism, which belongs to the field of mold technology. It includes an upper template and a lower template, a linkage type external block structure is arranged between the upper template and the lower template, and the linkage type external block structure is connected to the upper template through an external core-pulling driving component, and the lower template is fixedly connected with a central block inserted into a cavity in the linkage type external block structure, and the inner wall of the cavity and the central block are combined to form a molding cavity with a ring-shaped cross section. The ring-shaped molding cavity composed of the cavity in the linkage type external block structure and the central block can be injection molded to form a ring-shaped storage basket, and the internal pull-out hanging ring molding component can synchronously mold hanging rings connected to the two sides of the storage basket opening when the storage basket is injected, without the need for further processing at a later stage, which can reduce production costs.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism. Background Art

[0002] Moulds are important process equipment for modern industrial production, meeting the needs of industrial mass production. Injection moulds are a tool for producing plastic products, and are also tools that give plastic products complete structures and precise dimensions. Injection moulding 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 molten plastic into the mould cavity by an injection moulding machine, and after cooling and solidification, a moulded product is obtained. Traditional plastic storage baskets are generally made of injection moulds. Existing injection moulds cannot simultaneously form hanging rings on both sides of the opening of the storage basket during injection moulding. After the injection moulding of the storage basket is completed, the storage basket needs to be processed twice to form the required hollow part, which results in low production efficiency and high manufacturing cost.

[0003] For example, a Chinese patent discloses a hollow plastic storage basket injection molding mold [application number: 202221194547.6], including a lower mold plate, a bottom mold groove is opened in the middle of the lower mold plate, an injection hole is arranged in the bottom mold groove, a fixed connecting groove is also arranged on the lower mold plate, a storage basket bottom molding plate is arranged on the side of the lower mold plate, and a plastic storage basket core piece is arranged on the side of the storage basket bottom molding plate. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism.

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

[0006] A large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism comprises an upper template and a lower template, a linkage type outer block structure is arranged between the upper template and the lower template, and the linkage type outer block structure is connected to the upper template through an outer core-pulling driving assembly, a center block in a cavity inserted into the linkage type outer block structure is fixedly connected to the lower template, the inner wall of the cavity and the center block are combined to form a molding cavity with a circular cross-section, the cross-sections of the inner wall of the cavity and the center block are both circular and the radius gradually increases from bottom to top, a plurality of hollow molding blocks inserted into the molding cavity are protruding from the inner wall of the cavity, and an inner-pulling type hanging ring molding assembly is arranged directly below the center block.

[0007] In the above-mentioned large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism, the inner-pulling type ring forming component includes two symmetrically arranged inner-pulling inserts and an inner-pulling core-pulling driving component that can drive the two inner-pulling inserts to move synchronously horizontally. The top of the outer wall of the inner-pulling insert is connected to the inner side of the molding cavity and a ring forming insert is protruding on the outer wall of the inner-pulling insert and inserted into the molding cavity from the inside to the outside.

[0008] In the above-mentioned large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism, the inner core-pulling drive assembly includes an inner pull-out slider and a translation driver that can drive the inner pull-out slider to move horizontally along the symmetrical center line of the two inner pull-out inserts, and the two ends of the inner pull-out slider are respectively slidably matched with the two inner pull-out inserts through an oblique guide structure.

[0009] In the above-mentioned large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism, the oblique guide structure includes two T-shaped guide blocks protrudingly arranged on both sides of the inner pull-out slider, the T-shaped guide blocks are horizontally arranged and the shortest distance between the outer end surface of the T-shaped guide block and the center line of the inner pull-out slider gradually decreases from the outer end to the inner end of the T-shaped guide block, and a T-shaped slide groove that is adapted to and slidably matched with the T-shaped guide block is recessed inward on the inner wall of the inner pull-out insert.

[0010] In the above-mentioned large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism, an inner-pulling slider limiting structure is also provided on the lower template.

[0011] In the above-mentioned large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism, the inner pull-out slider limiting structure includes a limiting slide groove which is recessed inwardly and arranged on the top of the inner pull-out slider and parallel to the translation drive, and the lower template is provided with a limiting slide slider inserted into the limiting slide groove.

[0012] In the above-mentioned large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism, the linkage type outer panel structure includes four outer panels that are enclosed in a square shape, each outer panel has an arc surface on the inner wall, and the arc surfaces on the four outer panels can be combined to form a cavity with a circular cross-section, a linkage rod is horizontally arranged between two adjacent outer panels, and the linkage rod and the outer panel are slidably matched, and the outer panel is connected to the upper template through an external core-pulling drive assembly.

[0013] In the above-mentioned large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism, the external core-pulling drive assembly includes two linear drivers respectively fixed on two external inserts, the linear driver is tilted, and the two external inserts fixed with the linear driver are relatively arranged, the linear driver is connected to the upper template through a sliding push-pull connection structure, and an external insert driving structure is also provided between the upper template and the external insert, which can drive the external insert to move horizontally away from the molding cavity when the upper template and the external insert are away from each other.

[0014] In the above-mentioned large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism, the outer panel drive structure includes a drive rod obliquely fixed to the bottom of the upper template, which is obliquely inserted into the outer panel and slidably cooperates with the outer panel.

[0015] In the above-mentioned large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism, the sliding push-pull connection structure includes a push-pull slide groove obliquely arranged on the upper template, and the output shaft end of the linear drive is fixedly connected to a T-shaped joint inserted into the push-pull slide groove, and push-pull plates that can resist the T-shaped joint are arranged on both sides of the bottom opening of the push-pull slide groove.

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

[0017] 1. The annular molding cavity composed of the cavity in the linkage outer insert structure and the central insert can be injection molded to form an annular storage basket. The inner pull-out ring molding component can simultaneously mold the rings connected to the two sides of the storage basket opening during the injection molding of the storage basket, without the need for subsequent processing, which can reduce production costs.

[0018] 2. When the mold is opened, the upper template moves upward and can drive the linkage type external panel structure to move upward synchronously through the external core pulling drive assembly to separate the linkage type external panel structure from the lower template. After the linkage type external panel structure and the lower template are separated, the external core pulling drive assembly can drive the linkage type external panel structure away from the upper template and when the linkage type external panel structure is away from the lower template, translational core pulling can be realized to separate the hollow forming block on the inner wall of the cavity from the product.

[0019] 3. The connection between the inner pull-out insert and the molding cavity cooperates with the inner wall of the cavity to form a ring body on both sides of the opening of the storage basket. The ring molding insert is inserted into the molding cavity to form a hollow groove in the ring body. After the product is injection molded, the inner core pulling drive assembly can drive the two inner pull-out inserts to translate inward, thereby realizing the core pulling of the ring molding insert.

[0020] 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

[0021] Figure 1 It is a cross-sectional view of the utility model;

[0022] Figure 2 It is a schematic diagram of the overall structure of the linkage type external insert block structure;

[0023] Figure 3 It is a partial structural schematic diagram of the linkage type external insert block structure;

[0024] Figure 4 It is a partial structural schematic diagram of the utility model;

[0025] Figure 5 It is a structural schematic diagram of an inner pull-out type lifting ring forming component.

[0026] In the figure, an upper template 1, a lower template 2, a linkage type outer insert structure 3, a central insert 4, a molding cavity 5, an inner pull-out type lifting ring molding assembly 6, an inner pull-out insert 7, an inner pull-out slider 8, a lifting ring molding insert 9, a translation driver 10, a T-shaped guide block 11, a T-shaped slide 12, a limiting slide 13, a limiting slider 14, an outer insert 15, a linkage rod 16, a linear driver 17, a driving rod 18, a push-pull slide 19, a T-joint 20, and a push-pull plate 21. DETAILED DESCRIPTION

[0027] like Figure 1-Figure 5 As shown, a large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism includes an upper template 1 and a lower template 2, a linkage type outer block structure 3 is arranged between the upper template 1 and the lower template 2, and the linkage type outer block structure 3 is connected to the upper template 1 through an external core-pulling driving assembly, and the lower template 2 is fixedly connected with a center block 4 inserted into the cavity of the linkage type outer block structure 3, and the inner wall of the cavity and the center block 4 are combined to form a molding cavity 5 with a ring-shaped cross-section, and the cross-sections of the inner wall of the cavity and the center block 4 are both circular and the radius gradually increases from bottom to top, and a plurality of hollow molding blocks inserted into the molding cavity 5 are protruding on the inner wall of the cavity, and an inner-pulling type hanging ring molding assembly 6 is arranged directly below the center block 4.

[0028] In the utility model, the annular forming cavity 5 composed of the cavity in the linkage type outer insert block structure 3 and the central insert block 4 can be injection molded to form an annular storage basket, and the inner pull-out type hanging ring forming component 6 can simultaneously form hanging rings connected to the two sides of the storage basket opening when the storage basket is injected, without the need for further processing at a later stage, which can reduce the production cost, and the hollow part forming block on the inner wall of the cavity can directly form a hollow part on the storage basket;

[0029] When the mold is opened, the upper template 1 moves upward and can drive the linkage external block structure 3 to move upward synchronously through the external core-pulling drive assembly to separate the linkage external block structure 3 from the lower template. After the linkage external block structure 3 and the lower template are separated, the external core-pulling drive assembly can drive the linkage external block structure 3 away from the upper template and when the linkage external block structure 3 is away from the lower template, translational core pulling can be achieved, so that the hollow forming block on the inner wall of the cavity is separated from the product.

[0030] Specifically, combined with Figure 1 , Figure 4 and Figure 5 As shown, the inner pull-out type ring forming assembly 6 includes two symmetrically arranged inner pull-out inserts 7 and an inner core pulling driving assembly that can drive the two inner pull-out inserts 7 to move synchronously and horizontally. The top of the outer wall of the inner pull-out insert 7 is connected to the inner side of the molding cavity 5, and a ring forming insert 9 is protruding on the outer wall of the inner pull-out insert 7 and inserted into the molding cavity 5 from the inside to the outside. The connection between the inner pull-out insert and the molding cavity cooperates with the inner wall of the cavity to form a ring body on both sides of the opening of the storage basket. The ring forming insert 9 is inserted into the molding cavity to form a hollow groove in the ring body. After the product is injection molded, the inner core pulling driving assembly can drive the two inner pull-out inserts 7 to translate inward so as to realize the core pulling of the ring forming insert 9.

[0031] Specifically, the inner core-pulling drive assembly includes an inner core-pulling slider 8 and a translation driver 10 that can drive the inner core-pulling slider 8 to move horizontally along the symmetrical center line of the two inner core-pulling inserts 7. The two ends of the inner core-pulling slider 8 are respectively slidably matched with the two inner core-pulling inserts 7 through an oblique guide structure. The oblique guide structure includes two T-shaped guide blocks 11 protrudingly arranged on both sides of the inner core-pulling slider 8. The T-shaped guide block 11 is horizontally arranged and the shortest distance between the outer end surface of the T-shaped guide block 11 and the center line of the inner core-pulling slider 8 gradually decreases from the outer end to the inner end of the T-shaped guide block 11. The inner wall of the inner core-pulling insert 7 is recessed inwardly and provided with a T-shaped groove 12 that is adapted to and slidably matched with the T-shaped guide block 11. The translation drive can drive the inner pull-out slider 8 to move horizontally along the symmetrical center line of the two inner pull-out inserts 7. When the translation drive drives the inner pull-out slider 8 to move closer to itself, the two inner pull-out inserts translate in the direction away from the molding cavity, thereby enabling the core pulling of the hanging ring molding insert 9. When the translation drive drives the inner pull-out slider 8 away from itself, the two inner pull-out inserts translate in the direction close to the molding cavity, thereby enabling the hanging ring molding insert 9 to be inserted into the molding cavity.

[0032] Those skilled in the art should understand that the translation driver may be an oil cylinder, an air cylinder or a linear motor, etc.

[0033] Preferably, the lower template 2 is further provided with an inner slide block limiting structure, which includes a limiting slide groove 13 which is recessed inwardly and arranged on the top of the inner slide block 8 and is parallel to the translation driver 10, and the lower template 2 is provided with a limiting slide block 14 which is inserted into the limiting slide groove 13. The inner slide block can be limited when the inner slide block moves by the cooperation of the limiting slide block and the limiting slide groove.

[0034] Specifically, the linkage type outer panel structure 3 includes four outer panels 15 which are enclosed in a square shape, each outer panel 15 has an arc surface on its inner wall, and the arc surfaces on the four outer panels 15 can be combined to form a cavity with a circular cross section, and a linkage rod 16 is horizontally arranged between two adjacent outer panels 15, and the linkage rod 16 and the outer panel 15 are slidably matched, and the outer panel 15 is connected to the upper template 1 through an outer core-pulling driving assembly. When the upper template moves upward, the outer panel 15 can be driven to move together through the outer core-pulling driving assembly, and the linkage rod can enable the four outer panels to move with the upper template, and can drive the outer panel 15 to move horizontally in a direction away from the molding cavity 5 when the upper template 1 and the outer panel 15 are away from each other.

[0035] Specifically, the outer core pulling drive assembly includes two linear drivers 17 respectively fixed on two outer inserts 15, the linear drivers 17 are arranged obliquely, and the two outer inserts 15 fixed with the linear drivers 17 are arranged oppositely, the linear drivers 17 are connected to the upper template 1 through a sliding push-pull connection structure, and an outer insert driving structure is also provided between the upper template 1 and the outer insert 15, which can drive the outer insert 15 to move horizontally away from the molding cavity 5 when the upper template 1 and the outer insert 15 are away from each other. The linear driver 17 is fixed on the outer insert and connected to the upper template 1 through a sliding push-pull connection structure. When the upper template moves upward, the two outer inserts fixed with the linear drivers can be driven to move upward through the sliding push-pull connection structure and the linear driver 17, and the remaining two outer inserts can be driven to move upward through the linkage rod. When the outer insert is separated from the lower template, the linear driver 17 can drive the outer insert to move away from the upper template. At this time, the outer insert driving structure can drive the outer insert 15 to move horizontally away from the molding cavity 5 to separate the hollow part molding block from the product.

[0036] Those skilled in the art should understand that the linear drive may be an oil cylinder, an air cylinder or a linear motor, etc.

[0037] Specifically, the outer insert driving structure includes a driving rod 18 obliquely fixed to the bottom of the upper mold plate 1, and the driving rod 18 is obliquely inserted into the outer insert 15 and slidably cooperates with the outer insert 15. When the outer insert moves away from the upper mold plate, the driving rod can drive the outer insert to move horizontally away from the molding cavity 5 to separate the hollow part molding block from the product.

[0038] Specifically, the sliding push-pull connection structure includes a push-pull slot 19 obliquely arranged on the upper template 1, and the end of the output shaft of the linear drive 17 is fixedly connected with a T-joint 20 inserted into the push-pull slot 19, and push-pull plates 21 that can abut against the T-joint 20 are arranged on both sides of the bottom opening of the push-pull slot 19. When the output shaft of the linear drive is extended, the end of the T-joint and the top of the push-pull slot 19 abut against each other, and the main body of the linear drive drives the outer insert to move away from the upper template under the action of the reaction force. The outer insert can be displaced in the direction away from the molding cavity while moving away from the upper template under the action of the driving rod. Since the T-joint and the push-pull slot 19 are slidably matched, the linear drive can also move with the outer insert at this time. When the output shaft of the linear drive shrinks, the T-joint and the push-pull plate can pull the main body of the linear drive to move toward the upper template, thereby driving the outer insert to reset.

[0039] The working principle of the utility model is as follows: the annular forming cavity 5 composed of the cavity in the linkage outer panel structure 3 and the central panel 4 can be injection molded to form an annular storage basket, and the inner pull-out hanging ring forming component 6 can synchronously form hanging rings connected to the two sides of the storage basket opening during the injection molding of the storage basket, without the need for further processing in the later stage, which can reduce the production cost, and the hollow portion forming block on the inner wall of the cavity can directly form a hollow portion on the storage basket. When the mold is opened, the upper template 1 moves upward and can drive the linkage outer panel structure 3 to move upward synchronously through the external core pulling driving component to separate the linkage outer panel structure 3 from the lower template. After the linkage outer panel structure 3 is separated from the lower template, the external core pulling driving component can drive the linkage outer panel structure 3 away from the upper template and can realize translational core pulling when the linkage outer panel structure 3 is away from the lower template, so that the hollow portion forming block on the inner wall of the cavity is separated from the product;

[0040] The connection between the inner pull-out insert and the molding cavity cooperates with the inner wall of the cavity to form a ring body on both sides of the storage basket opening. The ring molding insert 9 is inserted into the molding cavity to form a hollow groove in the ring body. After the product is injection molded, the inner core-pulling drive assembly can drive the two inner pull-out inserts 7 to translate inwardly, so as to realize the core pulling of the ring molding insert 9. The translation drive can drive the inner pull-out slider 8 to move horizontally along the symmetrical center line of the two inner pull-out inserts 7. When the translation drive drives the inner pull-out slider 8 to move closer to itself, the two inner pull-out inserts translate in the direction away from the molding cavity, so as to realize the core pulling of the ring molding insert 9. When the translation drive drives the inner pull-out slider 8 away from itself, the two inner pull-out inserts translate in the direction close to the molding cavity, so as to enable the ring molding insert 9 to be inserted into the molding cavity; through the cooperation of the limit slider and the limit slide groove, the inner pull-out slider can be limited when it moves.

[0041] When the upper template moves upward, the outer insert 15 can be driven to move together through the outer core-pulling driving assembly. The linkage rod can enable the four outer inserts to move with the upper template, and can drive the outer insert 15 to move horizontally away from the molding cavity 5 when the upper template 1 and the outer insert 15 are away from each other. The linear drive 17 is fixed on the outer insert and is connected to the upper template 1 through a sliding push-pull connection structure. When the upper template moves upward, the two outer inserts fixed with the linear drive can be driven upward through the sliding push-pull connection structure and the linear drive 17, and the remaining two outer inserts can be driven upward through the linkage rod. When the outer insert is separated from the lower template, the linear drive 17 can drive the outer insert to move away from the upper template. At this time, the outer insert 15 can be driven away from the molding cavity through the outer insert driving structure. 5. Horizontal movement in the direction of the hollowed-out forming block and the product makes the hollowed-out forming block and the product separate. When the outer panel moves away from the upper template, the driving rod can drive the outer panel to move horizontally in the direction away from the forming cavity 5 to separate the hollowed-out forming block and the product. When the output shaft of the linear drive is extended, the end of the T-joint and the top of the push-pull slide 19 are against each other, and the main body of the linear drive drives the outer panel to move away from the upper template under the action of the reaction force. Under the action of the driving rod, the outer panel can be displaced in the direction away from the forming cavity while moving away from the upper template. Since the T-joint and the push-pull slide 19 slide in cooperation, the linear drive can also move with the outer panel at this time. When the output shaft of the linear drive contracts, the T-joint and the push-pull plate can pull the main body of the linear drive to move toward the upper template, thereby driving the outer panel to reset.

[0042] 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, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0043] Although this article uses the upper template 1, lower template 2, linkage type outer panel structure 3, center panel 4, molding cavity 5, inner pull-out lifting ring molding assembly 6, inner pull-out panel 7, inner pull-out slider 8, lifting ring molding panel 9, translation drive 10, T-shaped guide block 11, T-shaped slide 12, limit slide 13, limit slider 14, outer panel 15, linkage rod 16, linear drive 17, drive rod 18, push-pull slide 19, T-joint 20, push-pull plate 21, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: A linkage type external insert block structure (3) is provided between the upper template (1) and the lower template (2), and the linkage type external insert block structure (3) is connected to the upper template (1) through an external core pulling drive assembly. A central insert block (4) in a cavity inserted into the linkage type external insert block structure (3) is fixedly connected to the lower template (2). The inner wall of the cavity and the central insert block (4) are combined to form a molding cavity (5) with a circular cross section. The cross sections of the inner wall of the cavity and the central insert block (4) are both circular and the radius gradually increases from bottom to top. A plurality of hollow molding blocks inserted into the molding cavity (5) are protruding from the inner wall of the cavity. An internal pull-out type hanging ring molding assembly (6) is provided directly below the central insert block (4).

2. The large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism according to claim 1 is characterized in that: The inner pull-out type ring forming assembly (6) comprises two symmetrically arranged inner pull-out inserts (7) and an inner pull-out driving assembly capable of driving the two inner pull-out inserts (7) to move synchronously and horizontally, the top of the outer wall of the inner pull-out insert (7) is connected to the inner side of the forming cavity (5), and a ring forming insert (9) is protruding from the outer wall of the inner pull-out insert (7) and is inserted into the forming cavity (5) from the inside to the outside.

3. The large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism according to claim 2 is characterized in that: The inner core pulling driving assembly comprises an inner pulling slider (8) and a translation driver (10) capable of driving the inner pulling slider (8) to move horizontally along the symmetric center line of the two inner pulling inserts (7), and the two ends of the inner pulling slider (8) are respectively slidably matched with the two inner pulling inserts (7) through an oblique guide structure.

4. The large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism according to claim 3 is characterized in that: The oblique guide structure comprises two T-shaped guide blocks (11) protrudingly arranged on both sides of the inner-drawn sliding block (8); the T-shaped guide blocks (11) are arranged horizontally and the shortest distance between the outer end surface of the T-shaped guide block (11) and the center line of the inner-drawn sliding block (8) gradually decreases from the outer end to the inner end of the T-shaped guide block (11); and a T-shaped slide groove (12) adapted to and slidably matched with the T-shaped guide block (11) is arranged inwardly on the inner wall of the inner-drawn insert (7).

5. The large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism according to claim 4 is characterized in that: The lower template (2) is also provided with an inner sliding block limiting structure.

6. The large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism according to claim 5 is characterized in that: The inner sliding block limiting structure comprises a limiting slide groove (13) which is recessed inwardly and arranged on the top of the inner sliding block (8) and is parallel to the translation drive (10); and a limiting slide groove (14) which is inserted into the limiting slide groove (13) is arranged on the lower template (2).

7. The large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism according to claim 1 is characterized in that: The linkage type external insert block structure (3) comprises four external insert blocks (15) which are enclosed in a square shape. The inner wall of each external insert block (15) has an arc surface and the arc surfaces on the four external insert blocks (15) can be combined to form a cavity with a circular cross-section. A linkage rod (16) is horizontally arranged between two adjacent external insert blocks (15) and the linkage rod (16) and the external insert block (15) are slidably matched. The external insert block (15) is connected to the upper template (1) through an external core pulling drive assembly.

8. The large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism according to claim 7, characterized in that: The outer core pulling drive assembly comprises two linear drivers (17) respectively fixed on two outer inserts (15); the linear driver (17) is arranged obliquely, and the two outer inserts (15) fixed with the linear driver (17) are arranged opposite to each other; the linear driver (17) is connected to the upper template (1) via a sliding push-pull connection structure; an outer insert driving structure is also provided between the upper template (1) and the outer insert (15), which can drive the outer insert (15) to move horizontally in a direction away from the molding cavity (5) when the upper template (1) and the outer insert (15) are away from each other.

9. The large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism according to claim 8, characterized in that: The outer insert driving structure comprises a driving rod (18) which is obliquely fixed to the bottom of the upper template (1); the driving rod (18) is obliquely inserted into the outer insert (15) and slidably matched with the outer insert (15).

10. The large hollow plastic dirty clothes storage basket mold with a four-slider synchronous core-pulling mechanism according to claim 8, characterized in that: The sliding push-pull connection structure comprises a push-pull slot (19) obliquely arranged on the upper template (1), the output shaft end of the linear drive (17) is fixedly connected with a T-joint (20) inserted into the push-pull slot (19), and push-pull plates (21) capable of abutting against the T-joint (20) are arranged on both sides of the bottom opening of the push-pull slot (19).

Images