High-precision garbage can injection mold

Abstract

The utility model provides a kind of high-precision garbage can injection mold, 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 by two pieces of front and rear side plate and two pieces of left and right side plate and form the movable template, the lower die plate on protruding and being provided with the lower forming insert block inserted into movable template, the upper die plate bottom is provided with upper insert block, the upper insert block, movable template, lower forming insert block and lower die plate combination form forming cavity.Mould is formed movable template by four side plates and is enclosed, cooperate with jacking assembly and translation drive assembly, realize the split formula movement of die plate;While lower forming insert block and the forming structure on side plate can integrally form hollow part and reinforcing rib, this design makes mould can separate from multiple directions when ejecting, reduce the adhesion force of garbage can and die plate, avoid ejection deformation damage, and do not need additional process processing hollow and reinforcing rib, improve forming efficiency and product structure integrity.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a high-precision garbage can injection mold. Background Technology

[0002] The commonly used integral intermediate template design for injection molding of trash cans has obvious defects: during ejection, the trash can product is prone to forming a tight bond with the inner wall of the template. In addition, the integral template is subjected to a single force direction, which can easily lead to problems such as local deformation, edge and corner damage or even overall structural damage, seriously affecting the product qualification rate and production efficiency.

[0003] For example, a Chinese patent discloses an anti-warping injection mold for a household plastic trash can [application number: 202420784612.3], which includes an upper mold, a middle mold, and a lower mold. The lower mold is provided with a molding insert that is inserted into the middle mold. A molding cavity is provided between the upper mold, the middle mold, the molding insert, and the lower mold. The molding insert is provided with a vertical reinforcing rib molding structure. The lower mold is also provided with an integral ejection mechanism. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a high-precision injection mold for trash cans.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A high-precision trash can injection mold includes an upper mold plate and a lower mold plate. A movable mold plate, formed by two front and rear side plates and two left and right side plates, is provided between the upper and lower mold plates. A lower molding insert protrudes from the lower mold plate and is inserted into the movable mold plate. An upper insert is provided at the bottom of the upper mold plate. The upper insert, movable mold plate, lower molding insert, and lower mold plate are combined to form a molding cavity. Lifting components that slide with the upper mold plate are inclinedly provided on the front and rear side plates. The upper mold plate is also provided with translation drive components connected to the front and rear side plates and the left and right side plates. The top and four side walls of the lower molding insert are provided with hollowed-out molding structures. The front and rear side plates and the left and right side plates are also provided with reinforcing rib molding structures.

[0006] In the aforementioned high-precision trash can injection mold, the reinforcing rib forming structure includes several horizontally arranged transverse reinforcing rib forming grooves and several vertically arranged vertical reinforcing rib forming grooves. The transverse and vertical reinforcing rib forming grooves are recessed inwardly on the front and rear side plates and the left and right side plates.

[0007] In the aforementioned high-precision trash can injection mold, the hollow part forming structure includes several hollow part forming blocks arranged in a rectangular array and protruding on the top and four side walls of the lower forming insert.

[0008] In the aforementioned high-precision trash can injection mold, the lifting assembly includes a lifting driver that is tilted and fixed to the outside of the front and rear side plates, and the output shaft end of the lifting driver is connected to the upper template through a sliding connection structure.

[0009] In the aforementioned high-precision trash can injection mold, the sliding connection structure includes a connecting groove on the upper template, and two clamping plates are provided in the connecting groove. The output shaft end of the lifting driver is inserted between the two clamping plates, and the inner end of the clamping plate is engaged in the slot on the output shaft of the lifting driver.

[0010] In the aforementioned high-precision trash can injection mold, the translation drive assembly includes several drive rods that are tilted and fixed to the bottom of the upper template, and the bottom of the drive rods is inserted into the front and rear side plates or the left and right side plates.

[0011] In the aforementioned high-precision trash can injection mold, an internal and external circulation cooling structure is provided between the upper template, upper insert, movable template, lower molding insert, and lower template.

[0012] In the aforementioned high-precision trash can injection mold, the internal and external circulation cooling structure includes an upper inlet / outlet channel in the upper mold plate, an upper cooling channel in the upper insert, a side cooling channel in the movable mold plate, an inner cooling channel in the lower molding insert, and a lower inlet / outlet channel in the lower mold plate. The upper inlet / outlet channel, the upper cooling channel, the side cooling channel, the inner cooling channel, and the lower inlet / outlet channel are connected in sequence.

[0013] In the aforementioned high-precision trash can injection mold, the inner end of the upper inlet / outlet channel is connected to the first upper connection port of the upper cooling channel located at the top of the upper insert. The upper cooling channel has a first lower connection port at the bottom outer edge of the upper insert. The first lower connection port is connected to the second upper connection port of the side cooling channel located at the top of the movable template. The side cooling channel has a second lower connection port at the bottom of the inner wall of the movable template. The second lower connection port is connected to the side connection port of the inner cooling channel located at the bottom of the side wall of the lower molding insert. The inner cooling channel has a bottom interface at the bottom of the lower molding insert. The bottom interface is connected to the inner end of the lower inlet / outlet channel.

[0014] In the aforementioned high-precision trash can injection mold, the side cooling channel is composed of several horizontal channels arranged horizontally in the front and rear side plates and the left and right side plates.

[0015] Compared with existing technologies, the advantages of this utility model are: 1. The mold is formed by four side plates forming a movable template. With the help of the lifting component and the translation drive component, the template can be disassembled and moved. At the same time, the lower forming insert and the forming structure on the side plate can be integrally formed with the hollow part and the reinforcing rib. This design allows the mold to separate from multiple directions when ejecting, reducing the adhesion between the trash can and the template, avoiding deformation and damage during ejection, and eliminating the need for additional processing of the hollow part and the reinforcing rib, thus improving molding efficiency and product structural integrity.

[0016] 2. The reinforcing rib forming structure adopts a design with horizontal and vertical forming grooves recessed on the side plate, which can simultaneously form horizontal and vertical reinforcing ribs on the side wall of the trash can. This structure eliminates the need for subsequent processing of reinforcing ribs, simplifying the production process. At the same time, the interlaced horizontal and vertical reinforcing ribs can improve the overall structural strength of the trash can and prevent deformation during use, solving the problem that traditional molds cannot form complex reinforcing ribs in one piece.

[0017] 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

[0018] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a structural diagram of the lower template area; Figure 4 This is a partial structural diagram of the lower template; Figure 5 This is a partial structural diagram of the activity template. Detailed Implementation

[0019] like Figures 1-5 As shown, a high-precision trash can injection mold includes an upper mold plate 1 and a lower mold plate 2. A movable mold plate 5, formed by two front and rear side plates 3 and two left and right side plates 4, is provided between the upper mold plate 1 and the lower mold plate 2. A lower forming insert 6 protrudes from the lower mold plate 2 and is inserted into the movable mold plate 5. An upper insert 7 is provided at the bottom of the upper mold plate 1. The upper insert 7, the movable mold plate 5, the lower forming insert 6, and the lower mold plate 2 are combined to form a forming cavity 8. A lifting component that slides with the upper mold plate 1 is inclinedly provided on the front and rear side plates 3. A translation drive component connected to the front and rear side plates 3 and the left and right side plates 4 is also provided on the upper mold plate 1. A hollow part forming structure 9 is provided on the top and four side walls of the lower forming insert 6. A reinforcing rib forming structure 10 is also provided on the front and rear side plates 3 and the left and right side plates 4.

[0020] In this invention, the mold is formed by four side plates enclosing a movable template. With the help of the lifting component and the translation drive component, the template can be disassembled and moved. At the same time, the lower forming insert and the forming structure on the side plate can be integrally formed with the hollow part and the reinforcing rib. This design allows the mold to separate from multiple directions when ejecting, reducing the adhesion between the trash can and the template, avoiding deformation and damage during ejection, and eliminating the need for additional processing of the hollow part and the reinforcing rib, thus improving the forming efficiency and the integrity of the product structure. When the product is ejected, the upper template and the movable template are lifted by external equipment. The product automatically separates from the lower forming insert on the lower template. Then, the lifting component drives the upper template to move away from the movable template. When the upper template moves away from the movable template, the translation drive component drives the front and rear side plates and left and right side plates that make up the movable template to move outward and separate from the product.

[0021] Specifically, the reinforcing rib forming structure 10 includes several horizontally arranged transverse reinforcing rib forming grooves 11 and several vertically arranged vertical reinforcing rib forming grooves 12. The transverse and vertical reinforcing rib forming grooves 11 and 12 are recessed inwards on the front and rear side plates 3 and the left and right side plates 4. This design, with its recessed transverse and vertical forming grooves on the side plates, allows for the simultaneous forming of transverse and vertical reinforcing ribs on the side wall of the trash can. This structure eliminates the need for subsequent reinforcing rib processing, simplifying the production process. Furthermore, the interlaced transverse and vertical reinforcing ribs enhance the overall structural strength of the trash can, preventing deformation during use and solving the problem of traditional molds being unable to integrally form complex reinforcing ribs.

[0022] Specifically, the hollowed-out part molding structure 9 includes several hollowed-out part molding blocks 13 arranged in a rectangular array and protruding on the top and four side walls of the lower molding insert 6. The hollowed-out part molding structure uses rectangular array molding blocks protruding on the lower molding insert to precisely mold the hollowed-out parts of the trash can. This design allows the hollowed-out part to be integrally injection molded with the can body, ensuring the accuracy of the hollowed-out position and structural stability, avoiding damage to the can body caused by subsequent cutting and hollowing, and improving the product qualification rate.

[0023] Specifically, the lifting assembly includes a lifting driver 14 that is tilted and fixed to the outside of the front and rear side plates 3. The output shaft end of the lifting driver 14 is connected to the upper template 1 through a sliding connection structure. The lifting assembly, through the tilted and fixed lifting driver slidingly engaging with the upper template, can drive the front and rear side plates to move in an inclined direction. This structure allows the side plates to detach from the trash can in an inclined direction during mold opening, reducing friction and adhesion with the can body, avoiding scratches or deformation to the side walls of the trash can during ejection, and improving the stability of the ejection process.

[0024] Those skilled in the art will understand that the lifting actuator can be a hydraulic cylinder, a pneumatic cylinder, or a linear motor, etc.

[0025] Specifically, the sliding connection structure includes a connecting groove 15 on the upper template 1. Two clamping plates 16 are disposed within the connecting groove 15. The output shaft end of the lifting driver 14 is inserted between the two clamping plates 16, and the inner ends of the clamping plates 16 are engaged in slots 25 on the output shaft of the lifting driver 14. The sliding connection structure, through the cooperation between the clamping plates in the connecting groove and the slots on the output shaft of the lifting driver, achieves a stable connection between the driver and the upper template without affecting relative sliding. This design ensures that the power output by the lifting driver is accurately transmitted to the side plates, while also guaranteeing connection stability during sliding, preventing side plate displacement due to loose connection, and further ensuring the integrity of the trash can during ejection.

[0026] Specifically, the translation drive assembly includes several drive rods 17 that are tilted and fixed to the bottom of the upper template 1. The bottom of the drive rods 17 are inserted into the front and rear side plates 3 or the left and right side plates 4. The translation drive assembly uses tilted and fixed drive rods inserted into the side plates to drive the front and rear and left and right side plates to achieve translational movement. This structure allows the four side plates to translate synchronously or independently during mold opening, separating from the trash can from different directions, completely eliminating the adhesion between the template and the can body, solving the problem of uneven force when the overall template is ejected, and effectively preventing deformation and damage to the trash can.

[0027] Preferably, an internal and external circulation cooling structure is provided between the upper mold plate 1, the upper insert 7, the movable mold plate 5, the lower molding insert 6, and the lower mold plate 2. The internal and external circulation cooling structure can cool the molding cavity from all directions. This design accelerates the cooling speed of the injection molded part, shortens the molding cycle, and avoids internal stress or surface defects in the trash can due to uneven cooling, thereby improving the stability of product quality.

[0028] Specifically, the internal and external circulation cooling structure includes an upper inlet / outlet channel 18 located in the upper template 1, an upper cooling channel 19 located in the upper insert 7, a side cooling channel 20 located in the movable template 5, an inner cooling channel 21 located in the lower forming insert 6, and a lower inlet / outlet channel 22 located in the lower template 2. The upper inlet / outlet channel 18, upper cooling channel 19, side cooling channel 20, inner cooling channel 21, and lower inlet / outlet channel 22 are sequentially connected. This internal and external circulation cooling structure, through multiple sets of sequentially connected channels, forms a cooling circuit that runs through the upper and lower templates, inserts, and movable template. This structure allows the cooling medium to flow through all key parts of the forming cavity, achieving uniform cooling, solving the cooling blind zone problem present in traditional cooling structures, further ensuring consistent cooling rates across all parts of the trash can, and reducing the risk of deformation.

[0029] Specifically, the inner end of the upper inlet / outlet channel 18 is connected to the first upper connection port of the upper cooling channel 19 located on top of the upper insert 7. The upper cooling channel 19 has a first lower connection port at the bottom outer edge of the upper insert 7, which is connected to the second upper connection port of the side cooling channel 20 located on top of the movable template 5. The side cooling channel 20 has a second lower connection port at the bottom of the inner wall of the movable template 5, which is connected to the side connection port of the inner cooling channel 21 located at the bottom of the side wall of the lower molding insert 6. The inner cooling channel 21 has a bottom interface at the bottom of the lower molding insert 6, which is connected to the inner end of the lower inlet / outlet channel 22. Each channel is connected sequentially through specific interfaces to form an orderly cooling medium flow path. This design ensures that the cooling medium flows smoothly in the channels without any dead corners, improving cooling efficiency. At the same time, the precise interface connection avoids cooling medium leakage, ensuring a clean working environment for the mold, and ensuring that the cooling effect covers the entire molding cavity, guaranteeing the molding quality of the trash can.

[0030] Specifically, the side cooling channels 20 consist of several horizontal channels 23 arranged horizontally within the front and rear side plates 3 and the left and right side plates 4. These horizontal channels within each side plate allow for uniform cooling of the movable mold plate. This structure ensures consistent side plate temperature, preventing uneven heating that could lead to inconsistent thickness of the trash can's sidewalls. It also improves heat dissipation efficiency, extends mold life, and ensures stability during continuous production.

[0031] The working principle of this utility model is as follows: The mold is formed by four side plates enclosing a movable template. With the help of the lifting component and the translation drive component, the template can be disassembled and moved. At the same time, the lower forming insert and the forming structure on the side plate can be integrally formed with the hollow part and the reinforcing rib. This design allows the mold to separate from multiple directions when ejecting, reducing the adhesion between the trash can and the template, avoiding deformation and damage during ejection, and eliminating the need for additional processing of the hollow part and the reinforcing rib, thus improving molding efficiency and product structural integrity. When the product is ejected, the upper template and the movable template are lifted by external equipment, and the product automatically separates from the lower forming insert on the lower template. Then, the lifting component drives the upper template to move away from the movable template. When the upper template moves away from the movable template, the translation drive component can drive the front and rear side plates and the left and right side plates that make up the movable template to move outward and separate from the product. The reinforcing rib molding structure adopts a design with horizontal and vertical molding grooves recessed on the side plate, which can simultaneously form horizontal and vertical reinforcing ribs on the side wall of the trash can. This structure eliminates the need for subsequent processing of reinforcing ribs, simplifying the production process. At the same time, the crisscrossing horizontal and vertical reinforcing ribs can improve the overall structural strength of the trash can and prevent deformation during use. This solves the problem that traditional molds cannot integrally form complex reinforcing ribs. The hollow part molding structure adopts a rectangular array of molding blocks protruding on the lower molding insert, which can accurately form the hollow parts of the trash can. This design allows the hollow part to be integrally injection molded with the can body, ensuring the accuracy of the hollow position and the structural stability, avoiding damage to the can body caused by subsequent cutting and hollowing, and improving the product qualification rate. The lifting assembly, through a tilted and fixed lifting driver that slides with the upper template, can drive the front and rear side plates to move in an inclined direction. This structure allows the side plates to detach from the trash can along the inclined direction when the mold is opened, reducing friction and adhesion with the can body, avoiding scratches or deformation of the trash can side walls during ejection, and improving the stability of the ejection process. The sliding connection structure, through the clamping plate in the connecting groove and the slot of the lifting driver output shaft, achieves a stable connection between the driver and the upper template without affecting relative sliding. This design ensures that the power output by the lifting driver can be accurately transmitted to the side plates, while ensuring the connection stability during sliding, avoiding the side plates from shifting due to loose connection, and further ensuring the integrity of the trash can during ejection. The translation drive assembly uses a tilted and fixed drive rod inserted into the side plate, which can drive the front, rear, left, and right side plates to achieve translational movement. This structure allows the four side plates to translate synchronously or independently during mold opening, separating from the trash can from different directions, completely eliminating the adhesion force between the template and the can body, solving the problem of uneven force during the overall template ejection, and effectively preventing the trash can from deforming and being damaged. The internal and external circulation cooling structure provides all-around cooling of the molding cavity. This design accelerates the cooling speed of the injection molded part, shortens the molding cycle, and avoids internal stress or surface defects in the trash can caused by uneven cooling, thus improving product quality stability. The internal and external circulation cooling structure is formed by multiple interconnected flow channels, creating a cooling loop that runs through the upper and lower mold plates, inserts, and movable mold plates. This structure allows the cooling medium to flow through all key parts of the molding cavity, achieving uniform cooling and solving the cooling blind spots problem of traditional cooling structures. It further ensures consistent cooling rates across all parts of the trash can, reducing the risk of deformation. The side cooling channels, composed of horizontal channels, are located within each side plate, providing uniform cooling of the movable mold plate. This structure keeps the side plate temperature consistent, preventing uneven heating of the side plates that could lead to inconsistent sidewall thickness in the trash can, while also improving the heat dissipation efficiency of the side plates, extending mold life, and ensuring stability during continuous production.

[0032] 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 high-precision injection mold for a trash can, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that, A movable template (5) is provided between the upper template (1) and the lower template (2), which is formed by two front and rear side plates (3) and two left and right side plates (4). A lower forming insert (6) is protruding from the lower template (2) and inserted into the movable template (5). An upper insert (7) is provided at the bottom of the upper template (1). The upper insert (7), the movable template (5), the lower forming insert (6) and the lower template (2) are combined to form a forming cavity (8). A lifting component that slides with the upper template (1) is provided on the front and rear side plates (3). The upper template (1) is also provided with a translation drive component that is connected to the front and rear side plates (3) and the left and right side plates (4). A hollow part forming structure (9) is provided on the top and four side walls of the lower forming insert (6). A reinforcing rib forming structure (10) is provided on the front and rear side plates (3) and the left and right side plates (4).

2. The high-precision trash can injection mold according to claim 1, characterized in that, The reinforcing rib forming structure (10) includes several horizontally arranged transverse reinforcing rib forming grooves (11) and several vertically arranged vertical reinforcing rib forming grooves (12). The transverse reinforcing rib forming grooves (11) and vertical reinforcing rib forming grooves (12) are recessed inward on the front and rear side plates (3) and the left and right side plates (4).

3. The high-precision trash can injection mold according to claim 2, characterized in that, The hollow part forming structure (9) includes several hollow part forming blocks (13) arranged in a rectangular array and protruding on the top and four side walls of the lower forming insert (6).

4. The high-precision trash can injection mold according to claim 2, characterized in that, The lifting assembly includes a lifting driver (14) that is tilted and fixed to the outside of the front and rear side plates (3). The output shaft end of the lifting driver (14) is connected to the upper template (1) through a sliding connection structure.

5. The high-precision trash can injection mold according to claim 4, characterized in that, The sliding connection structure includes a connection groove (15) on the upper template (1), and two clamping plates (16) are provided in the connection groove (15). The output shaft end of the lifting driver (14) is inserted between the two clamping plates (16) and the inner end of the clamping plate (16) is inserted into the slot (25) on the output shaft of the lifting driver (14).

6. The high-precision trash can injection mold according to claim 5, characterized in that, The translation drive assembly includes several drive rods (17) that are tilted and fixed to the bottom of the upper template (1). The bottom of the drive rods (17) is inserted into the front and rear side plates (3) or the left and right side plates (4).

7. The high-precision trash can injection mold according to claim 1, characterized in that, An internal and external circulation cooling structure is provided between the upper template (1), upper insert (7), movable template (5), lower forming insert (6) and lower template (2).

8. The high-precision trash can injection mold according to claim 7, characterized in that, The internal and external circulation cooling structure includes an upper inlet / outlet channel (18) in the upper template (1), an upper cooling channel (19) in the upper insert (7), a side cooling channel (20) in the movable template (5), an inner cooling channel (21) in the lower molding insert (6), and a lower inlet / outlet channel (22) in the lower template (2). The upper inlet / outlet channel (18), upper cooling channel (19), side cooling channel (20), inner cooling channel (21), and lower inlet / outlet channel (22) are connected in sequence.

9. The high-precision trash can injection mold according to claim 8, characterized in that, The inner end of the upper inlet / outlet channel (18) is connected to the first upper connection port of the upper cooling channel (19) located at the top of the upper insert (7). The upper cooling channel (19) has a first lower connection port at the bottom outer edge of the upper insert (7). The first lower connection port is connected to the second upper connection port of the side cooling channel (20) located at the top of the movable template (5). The side cooling channel (20) has a second lower connection port at the bottom of the inner wall of the movable template (5). The second lower connection port is connected to the side connection port of the inner cooling channel (21) located at the bottom of the side wall of the lower molding insert (6). The inner cooling channel (21) has a bottom interface at the bottom of the lower molding insert (6). The bottom interface is connected to the inner end of the lower inlet / outlet channel (22).

10. The high-precision trash can injection mold according to claim 9, characterized in that, The side cooling channel (20) consists of several horizontal channels (23) arranged horizontally in the front and rear side plates (3) and the left and right side plates (4).

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