Multi-point balance glue feeding mold for plastic cup holder

Abstract

The utility model provides a multi-point balance glue feeding mold for a plastic cup holder, and belongs to the technical field of molds. The mold comprises an upper mold plate and a lower mold plate, the upper mold plate is provided with a combined upper insert structure, the combined upper insert structure is inserted into a cup holder forming groove in the lower mold plate, and a cup holder forming cavity is formed between the combined upper insert structure and the cup holder forming groove. The cup holder forming cavity can form a plastic cup holder in an injection molding mode, the combined type upper insert structure adopts a multi-insert combination mode to form an upper insert, the maintenance and replacement cost when the upper insert is damaged can be reduced, and the multi-point balance glue feeding mechanism can feed glue into the cup holder forming cavity through a plurality of point positions. According to the side core-pulling mechanism, the injection molding efficiency can be improved, the glue feeding process can be more balanced, the problem of partial non-full filling is prevented, and during mold opening, automatic core pulling can be achieved through the side core-pulling mechanism.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a multi-point balanced injection mold for plastic cup holders. Background Technology

[0002] Plastic cup holders are generally injection molded. Because the partitions of the cup holder are relatively thin, it takes a long time for the injection liquid to fill the entire molding cavity during injection molding, and it is easy for some parts to be not filled, resulting in product defects.

[0003] For example, a Chinese patent discloses an injection mold for a car cup holder [application number: 202320924604.X], which includes a core and a cavity. The cavity moves along a guide post to approach the core until it fits, thereby performing injection molding. The molding cavity is the molding area between the core and the cavity. The support cavity is located inside the cavity and is connected to the molding cavity. The switchable molding component is slidably located inside the support cavity. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a multi-point balanced injection mold for plastic cup holders.

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

[0006] A multi-point balanced injection mold for a plastic cup holder includes an upper mold plate and a lower mold plate. The upper mold plate is provided with a combined upper insert structure, which is inserted into the cup holder forming groove on the lower mold plate, and a cup holder forming cavity is formed between the combined upper insert structure and the cup holder forming groove. The upper side of the upper mold plate is provided with a multi-point balanced injection mechanism connected to the cup holder forming cavity. The lower mold plate is also provided with four side core pulling mechanisms, which are respectively connected to the four sides of the cup holder forming cavity.

[0007] In the aforementioned multi-point balanced injection mold for plastic cup holders, the multi-point balanced injection mechanism includes an injection plate with an X-shaped cross-section, which is set on the upper side of the upper template. The four support arms of the X-shaped injection plate are each provided with an injection tube that is inserted into the combined upper insert structure.

[0008] In the aforementioned multi-point balanced injection mold for plastic cup holders, the combined upper insert structure includes several molded inserts arranged in a rectangular array, with the tops of adjacent sides of two adjacent molded inserts abutting each other and a partition molding groove formed at the bottom.

[0009] In the aforementioned multi-point balanced injection mold for plastic cup holders, the injection tube is inserted into the combined upper insert structure at the connection point of the four molding inserts, and the bottom end of the injection tube is connected to the top of the partition molding groove.

[0010] In the aforementioned multi-point balanced injection mold for plastic cup holders, a protective sleeve is provided on the outer side of the injection tube, and a connecting rod is fixedly connected to the side of the protective sleeve.

[0011] In the aforementioned multi-point balanced injection mold for plastic cup holders, the side core-pulling mechanism includes a side insert that is slidably connected to the lower template. The inner end of the side insert is connected to the side of the cup holder forming cavity. The upper template is also provided with a core-pulling drive structure connected to the side insert.

[0012] In the aforementioned multi-point balanced injection mold for plastic cup holders, the core-pulling drive structure includes two drive rods that are inclined and fixed to the bottom of the upper template. The drive rods are inserted into the side inserts and slidably connected to the side inserts.

[0013] In the aforementioned multi-point balanced injection mold for plastic cup holders, the lower template is also provided with a side insert limiting structure.

[0014] In the aforementioned multi-point balanced injection mold for plastic cup holders, the side insert limiting structure includes a T-shaped limiting block set on the lower template. The T-shaped limiting block is inserted into the bottom of the side insert and slidably connected to the side insert. Limiting pressure plates are also provided on both sides of the side insert.

[0015] In the aforementioned multi-point balanced injection mold for plastic cup holders, the side insert limiting structure further includes a positioning block disposed on the side of the side insert away from the cup holder forming cavity. The positioning block is fixed on the lower template and there is a gap between the positioning block and the side insert.

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

[0017] 1. The cup holder molding cavity can be injection molded to form a plastic cup holder. The modular upper insert structure uses multiple inserts to form the upper insert, which can reduce the repair and replacement cost when the upper insert is damaged. The multi-point balanced injection mechanism can inject glue into the cup holder molding cavity through multiple points, which not only improves injection efficiency but also makes the injection process more balanced, preventing the problem of local incomplete filling. When the mold is opened, the side core pulling mechanism can realize automatic core pulling.

[0018] 2. The X-shaped injection plate can inject glue into the cup holder molding cavity from four points through four support arms and four injection tubes, which can effectively improve injection efficiency. The four injection tubes are distributed at the ends of the four support arms of the X shape, which can make the glue injection more even and prevent the problem of local incomplete filling.

[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 cross-sectional view of the present invention;

[0021] Figure 2 This is a structural diagram of the combined upper inlay structure;

[0022] Figure 3 This is a schematic diagram of the structure of the cup holder forming groove;

[0023] Figure 4 This is a partial structural schematic diagram of the present invention;

[0024] Figure 5 This is a structural diagram of the upper template.

[0025] In the diagram, the components are: upper template 1, lower template 2, combined upper insert structure 3, cup holder forming groove 4, cup holder forming cavity 5, multi-point balanced glue injection mechanism 6, side core pulling mechanism 7, injection plate 8, injection tube 9, forming insert 10, partition forming groove 11, sheath 12, connecting rod 13, side insert 14, drive rod 15, T-shaped limit block 16, limit pressure plate 17, and positioning block 18. Detailed Implementation

[0026] like Figures 1-5 As shown, a multi-point balanced injection mold for a plastic cup holder includes an upper template 1 and a lower template 2. The upper template 1 is provided with a combined upper insert structure 3, which is inserted into a cup holder forming groove 4 on the lower template 2, and a cup holder forming cavity 5 is formed between the combined upper insert structure 3 and the cup holder forming groove 4. The upper side of the upper template 1 is provided with a multi-point balanced injection mechanism 6 connected to the cup holder forming cavity 5. The lower template 2 is also provided with four side core pulling mechanisms 7, which are respectively connected to the four sides of the cup holder forming cavity 5.

[0027] In this invention, the cup holder molding cavity 5 can be injection molded to form a plastic cup holder. The combined upper insert structure uses a combination of multiple inserts to form the upper insert, which can reduce the maintenance and replacement cost when the upper insert is damaged. The multi-point balanced glue injection mechanism 6 can inject glue into the cup holder molding cavity through multiple points, which can not only improve the injection efficiency but also make the glue injection process more balanced and prevent the problem of local incomplete filling. When the mold is opened, the side core pulling mechanism can realize automatic core pulling.

[0028] Specifically, the multi-point balanced injection mechanism 6 includes an injection plate 8 with an X-shaped cross-section, located on the upper side of the upper template 1. Each of the four support arms of the X-shaped injection plate 8 has an injection tube 9 that inserts into the combined upper insert structure 3. The X-shaped injection plate can inject adhesive into the cup holder molding cavity from four points via the four support arms and four injection tubes, effectively improving injection efficiency. The four injection tubes distributed at the ends of the four X-shaped support arms ensure more even adhesive injection, preventing localized incomplete filling.

[0029] Specifically, the combined upper insert structure 3 includes several molded inserts 10 arranged in a rectangular array. The tops of adjacent sides of two adjacent molded inserts 10 abut each other, and a partition molding groove 11 is formed at the bottom. The upper insert composed of several molded inserts can reduce the maintenance and replacement costs when the upper insert is damaged, and the partition molding groove can form a partition structure on the cup holder.

[0030] Specifically, the injection tube 9 is inserted into the combined upper insert structure 3 at the connection point of the four molding inserts 10, and the bottom end of the injection tube 9 is connected to the top of the partition molding groove 11. The connection between the bottom of the injection tube and the partition molding groove allows the injection liquid to be injected from the partition molding groove and finally enter the cup holder molding cavity, preventing the partition molding groove from being incompletely filled due to the small gap of the partition molding groove.

[0031] Preferably, a protective sleeve 12 is provided on the outside of the injection tube 9, and a connecting rod 13 is fixedly connected to the side of the protective sleeve 12.

[0032] Specifically, the side core-pulling mechanism 7 includes a side insert 14 slidably connected to the lower template 2. The inner end of the side insert 14 is connected to the side of the cup holder forming cavity 5. The upper template 1 is also provided with a core-pulling drive structure connected to the side insert 14. The core-pulling drive structure includes two drive rods 15 that are inclined and fixed to the bottom of the upper template 1. The drive rods 15 are inserted into the side insert 14 and slidably connected to the side insert 14. When the mold is opened, the upper template moves upward, which can drive the inclined drive rods to move vertically upward. The vertical upward movement of the drive rods can drive the side insert to move away from the cup holder forming cavity, thereby realizing the automatic core-pulling of the side insert.

[0033] Preferably, the lower template 2 is further provided with a side insert limiting structure. The side insert limiting structure can limit the side insert.

[0034] Specifically, the side insert limiting structure includes a T-shaped limiting block 16 disposed on the lower template 2. The T-shaped limiting block 16 is inserted into the bottom of the side insert 14 and slidably connected to the side insert 14. Limiting pressure plates 17 are also provided on both sides of the side insert 14. The T-shaped limiting block, together with the limiting pressure plates, can limit the side insert, thereby preventing the side insert from shifting when moving.

[0035] Specifically, the side insert limiting structure also includes a positioning block 18 disposed on the side of the side insert 14 away from the cup holder forming cavity 5. The positioning block 18 is fixed on the lower template 2, and there is a gap between the positioning block 18 and the side insert 14. The positioning block can position the farthest distance the side insert can move, thereby preventing the side insert from detaching from the lower template.

[0036] The working principle of this utility model is as follows: the cup holder molding cavity 5 can be injection molded to form a plastic cup holder; the combined upper insert structure adopts a multi-insert combination method to form the upper insert, which can reduce the maintenance and replacement cost when the upper insert is damaged; the multi-point balanced glue injection mechanism 6 can inject glue into the cup holder molding cavity through multiple points, which can not only improve the injection efficiency but also make the glue injection process more balanced and prevent the problem of local incomplete filling; when the mold is opened, the side core pulling mechanism can realize automatic core pulling.

[0037] The X-shaped injection plate can inject glue into the cup holder molding cavity from four points through four support arms and four injection tubes, which can effectively improve injection efficiency. The four injection tubes are distributed at the ends of the four support arms of the X shape, which can make the glue injection more even and prevent the problem of local incomplete filling. The upper insert composed of several molding inserts can reduce the maintenance and replacement cost when the upper insert is damaged. The partition molding groove can form a partition structure on the cup holder. The bottom of the injection tube is connected to the partition molding groove, which allows the injection liquid to be injected from the partition molding groove and finally enter the cup holder molding cavity, preventing the partition molding groove from being incomplete due to the small gap of the partition molding groove.

[0038] When the mold is opened, the upper mold plate moves upward, which drives the inclined drive rod to move vertically upward. The vertical upward movement of the drive rod drives the side insert to move away from the cup holder forming cavity, thereby realizing the automatic core pulling of the side insert. The side insert limiting structure can limit the side insert. The T-shaped limiting block, together with the limiting pressure plate, can limit the side insert to prevent the side insert from deviating during movement. The positioning block can position the farthest distance the side insert moves, thereby preventing the side insert from separating from the lower mold plate.

[0039] 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.

[0040] Although this article frequently uses terms such as upper template 1, lower template 2, combined upper insert structure 3, cup holder forming groove 4, cup holder forming cavity 5, multi-point balanced glue injection mechanism 6, side core pulling mechanism 7, injection plate 8, injection tube 9, forming insert 10, partition forming groove 11, sheath 12, connecting rod 13, side insert 14, drive rod 15, T-shaped limiting block 16, limiting pressure plate 17, positioning block 18, etc., these terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would be contrary to the spirit of this utility model.

Claims

1. A multi-point plastic cup holder balanced glue feeding mold comprising an upper mold plate (1) and a lower mold plate (2), characterized in that, The upper die plate (1) is provided with a combined upper insert structure (3), the combined upper insert structure (3) is inserted into the cup holder forming groove (4) on the lower die plate (2), and a cup holder forming cavity (5) is formed between the combined upper insert structure (3) and the cup holder forming groove (4), the upper die plate (1) is provided with a multi-point balanced glue feeding mechanism (6) connected with the cup holder forming cavity (5) on the upper side, and the lower die plate (2) is further provided with four side core pulling mechanisms (7), and the four side core pulling mechanisms (7) are connected with the four sides of the cup holder forming cavity (5) respectively.

2. The plastic cup holder multi-point balanced glue feeding mold according to claim 1, wherein, The multi-point balanced glue feeding mechanism (6) comprises an injection plate (8) provided on the upper side of the upper die plate (1) and having an X-shaped cross section, and injection tubes (9) are arranged at the ends of the four arms of the injection plate (8) and inserted into the combined upper insert structure (3).

3. The plastic cup holder multi-point balanced glue-in mold of claim 2, wherein, The combined upper insert structure (3) comprises a plurality of forming inserts (10) arranged in a rectangular array, the adjacent sides of the adjacent two forming inserts (10) are abutted at the top and a partition forming groove (11) is formed at the bottom.

4. The plastic cup holder multi-point balanced glue-in mold of claim 3, wherein, The injection tube (9) is inserted into the combined upper insert structure (3) at the connection of the four forming inserts (10), and the bottom end of the injection tube (9) is connected with the top of the partition forming groove (11).

5. The plastic cup holder multi-point balanced glue-in mold of claim 4, wherein, The injection tube (9) is provided with a sheath (12) on the outside, and the side of the sheath (12) is fixedly connected with a connecting rod (13).

6. The plastic cup holder multi-point balanced glue-in mold of claim 1, wherein, The side core pulling mechanism (7) comprises a side insert (14) slidably connected with the lower die plate (2), the inner end of the side insert (14) is connected with the side of the cup holder forming cavity (5), and the upper die plate (1) is further provided with a core pulling driving structure connected with the side insert (14).

7. The plastic cup holder multi-point balanced glue-in mold of claim 6, wherein, The core pulling driving structure comprises two driving rods (15) obliquely fixed on the bottom of the upper die plate (1), the driving rods (15) are inserted into the side insert (14) and slidably connected with the side insert (14).

8. The plastic cup holder multi-point balanced glue-in mold of claim 7, wherein, The lower die plate (2) is further provided with a side insert limiting structure.

9. The plastic cup holder multi-point balanced glue-in mold of claim 8, wherein, The side insert limiting structure comprises a T-shaped limiting block (16) arranged on the lower die plate (2), the T-shaped limiting block (16) is inserted into the bottom of the side insert (14) and slidably connected with the side insert (14), and the side insert (14) is further provided with a limiting pressing plate (17) on the two sides.

10. The plastic cup holder multi-point balanced glue-in mold of claim 9, wherein, The side insert limiting structure further comprises a positioning block (18) arranged on the side of the side insert (14) away from the cup holder forming cavity (5), the positioning block (18) is fixed on the lower die plate (2), and there is a gap between the positioning block (18) and the side insert (14).

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