Disposable cup body injection mold

Abstract

The utility model relates to the technical field of molds, in particular to a disposable cup body injection mold which comprises an upper mold main body and a lower mold main body which are in butt joint in a directional mode, a plurality of evenly-distributed mold core assemblies are arranged between the upper mold main body and the lower mold main body, and each mold core assembly comprises an upper mold core, a lower mold core, a glue inlet insert and a cup bottom insert. A mold cavity for forming a cup body is formed among the upper mold core, the lower mold core, the glue inlet insert and the cup bottom insert; wherein the upper mold core and the lower mold core are directionally butted and matched, the upper mold core is provided with a cup body outer side profiling groove with a downward opening, the glue inlet insert is butted with the top of the cup body outer side profiling groove, a cup body inner side profiling block is formed on the lower mold core, the cup bottom insert is detachably fixed on the cup body inner side profiling block, and the cup bottom performance is adjusted by flexibly replacing the cup bottom insert. And the mold structure does not need to be replaced in a large scale, the mold manufacturing cost and time cost are reduced, the production efficiency is improved, and the market competitiveness of the product is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a disposable cup injection mold. Background Technology

[0002] Disposable milk tea cups are typically manufactured using injection molding. Current injection molds for disposable milk tea cups have relatively simple core designs, often employing two interlocking upper and lower cores. However, as market demands for the quality of disposable milk tea cups continue to rise, their structure generally widens from the bottom to the rim. The bottom needs to withstand greater structural strength, therefore, the bottom is made as thick as possible to improve the overall strength. Furthermore, disposable milk tea cups are often used to hold beverages such as milk tea, fruit tea, and coffee. Some vendors add toppings to enhance the flavor, such as tapioca pearls, jelly, and fruit pieces. When drinking, users use a straw to sip these toppings, and vendors have found that the straw frequently punctures the bottom of the cup. Therefore, the bottom also needs to be puncture-resistant.

[0003] Therefore, when making disposable milk tea cups for the first time, some businesses that frequently add toppings want the cups to be both low-cost and high-quality; some businesses that don't need to add toppings want the cups to be low-cost but of guaranteed quality; and some businesses want the cups to come in two styles: a high-strength premium style and a low-strength budget style, to more clearly categorize the drinks into two price ranges; and the strength of the cup bottom plays a decisive role in the quality of the disposable milk tea cup.

[0004] Therefore, existing simple mold core designs for injection molding are no longer sufficient to meet the diverse needs of the market. Thus, developing an injection mold that can flexibly adjust the strength of the bottom of a disposable milk tea cup is particularly necessary. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] A disposable cup injection mold includes an upper mold body and a lower mold body that are oriented and connected to each other. Multiple evenly distributed mold core assemblies are disposed between the upper mold body and the lower mold body. Each mold core assembly includes an upper mold core, a lower mold core, a glue injection insert, and a cup bottom insert. The upper mold core, lower mold core, glue injection insert, and cup bottom insert form a mold cavity for molding the cup body.

[0007] The upper mold core and the lower mold core are oriented and connected. The upper mold core is provided with a cup body outer contour groove with the opening facing downward. The glue insert is connected to the top of the cup body outer contour groove. The lower mold core is formed with a cup body inner contour block. The cup bottom insert can be detachably fixed on the cup body inner contour block.

[0008] Preferably, a square positioning block is formed at the lower end of the cup bottom insert, and a square positioning groove is formed on the inner side contour block of the cup that mates with the square positioning block. The cup bottom insert and the inner side contour block of the cup are positioned and fitted together by the mating of the square positioning block and the square positioning groove.

[0009] Preferably, a threaded hole is provided at the lower end of the cup bottom insert, and a countersunk hole is provided at the lower end of the cup inner inner contour block, extending to its upper end. The cup bottom insert and the cup inner inner contour block are connected by screws through the threaded hole and the countersunk hole.

[0010] Preferably, a truncated cone is formed at the lower end of the upper mold core, a contour groove is formed on the outer side of the cup body on the truncated cone, a conical groove is formed on the lower mold core that engages with the truncated cone, and a contour block is formed in the conical groove on the inner side of the cup body. The upper mold core and the lower mold core are oriented and engaged through the engagement of the truncated cone and the conical groove.

[0011] Preferably, guide rods are provided at the corners of the upper mold body and the lower mold body, and the upper mold body and the lower mold body are oriented and mated together through the guide rods; the upper mold body includes an upper template, a hot runner plate installed on the upper template, and a panel installed on the hot runner plate, the upper mold core is embedded in the upper template, and a glue inlet is provided on the panel to mate with the hot runner plate, the hot runner plate is provided with a hot runner system, and the hot runner system mates with the glue inlet insert, the lower mold body includes a lower template and a base plate installed at the lower end of the lower template, and the lower mold core is embedded in the lower template.

[0012] Preferably, the injection insert includes a fixing block and a hot nozzle embedded in the fixing block. The fixing block is embedded between the upper mold core and the hot runner plate, and the hot nozzle is connected to the mold cavity.

[0013] Preferably, a protrusion is provided at the lower end of the fixing block, and a sealing ring is sleeved around the protrusion, with the sealing ring sealingly connected to the upper end of the upper mold core.

[0014] Preferably, four mold core assemblies are provided, and the four mold core assemblies are arrayed in the upper and lower mold plates.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] For businesses, this greatly satisfies diverse needs. Those who frequently add toppings can improve the strength and puncture resistance of disposable milk tea cups by replacing the appropriate bottom insert, while maintaining cost control, as only the bottom insert needs replacing, not the entire mold. Businesses that rarely add toppings can choose standard bottom inserts, ensuring the bottom is the same thickness as other parts, meeting their need for low cost and guaranteed quality. Businesses wishing to differentiate beverage price ranges can easily produce high-end and low-end milk tea cups with varying strengths by changing the bottom insert. From the mold's perspective, adjusting the bottom performance by flexibly changing the bottom insert eliminates the need for large-scale mold structure changes, reducing mold manufacturing and time costs, improving production efficiency, and enhancing product competitiveness in the market.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model;

[0021] Figure 3 This is an exploded structural diagram of the mold core assembly in this utility model from one perspective;

[0022] Figure 4 This is an exploded structural diagram of the mold core assembly in this utility model from another perspective.

[0023] The reference numerals and names in the figure are as follows:

[0024] Upper mold body 10, upper template 11, hot runner plate 12, panel 13, sprue 14, hot runner system 15, lower mold body 20, lower template 21, base plate 22, upper mold core 30, outer contour groove of cup body 31, cone 32, lower mold core 40, inner contour block of cup body 41, square positioning groove 42, countersunk hole 43, tapered groove 44, sprue insert 50, fixing block 51, hot nozzle 52, protrusion 53, sealing ring 54, bottom insert of cup body 60, square positioning block 61, threaded hole 62, guide rod 70. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Please see Figure 1-4 In this embodiment of the present invention, a disposable cup injection mold includes an upper mold body 10 and a lower mold body 20 that are oriented and connected to each other. A plurality of uniformly distributed mold core assemblies are disposed between the upper mold body 10 and the lower mold body 20. Each mold core assembly includes an upper mold core 30, a lower mold core 40, a glue injection insert 50, and a cup bottom insert 60. A mold cavity for molding the cup body is formed between the upper mold core 30, the lower mold core 40, the glue injection insert 50, and the cup bottom insert 60.

[0027] The upper mold core 30 and the lower mold core 40 are oriented and connected. The upper mold core 30 is provided with a cup body outer contour groove 31 with the opening facing downward. The glue insert 50 is connected to the top of the cup body outer contour groove 31. The lower mold core 40 is formed with a cup body inner contour block 41. The cup bottom insert 60 is detachably fixed on the cup body inner contour block 41.

[0028] By installing a removable and replaceable cup bottom insert 60 on the inner mold block 41 inside the cup body of the lower mold core 40, the inner side of the cup bottom is formed on the surface of the cup bottom insert 60. When the cup bottom insert 60 is replaced with a relatively smaller size, the thickness of the inner bottom of the molded disposable milk tea cup will increase, thereby increasing the strength of the disposable milk tea cup. When the cup bottom insert 60 is made of a material with better smoothness, the bottom of the disposable milk tea cup will have a smoother wall surface, thereby increasing the strength of the bottom. If there is no requirement for the strength of the bottom, the side wall of the cup bottom insert 60 can be flush with the side wall of the inner mold block 41 inside the cup body, so that the thickness of the bottom of the molded disposable milk tea cup is consistent with that of other parts.

[0029] When this disposable cup injection mold is in operation, the upper mold body 10 and the lower mold body 20, which are oriented and connected to each other, are precisely closed. The upper mold core 30 and the lower mold core 40 are oriented and connected. The cup body outer contour groove 31 with the opening facing downward on the upper mold core 30 and the cup body inner contour block 41 on the lower mold core 40 together determine the shape of the cup body. The injection insert 50 is connected to the top of the cup body outer contour groove 31, and the injection raw material enters the mold cavity through this. The cup bottom insert 60 is detachably fixed to the cup body inner contour block 41. During the injection process, the raw material fills the mold cavity formed between the upper mold core 30, the lower mold core 40, the injection insert 50 and the cup bottom insert 60, thereby forming the cup body. When it is necessary to adjust the relevant properties of the cup bottom, it can be achieved by replacing the cup bottom insert 60 with a different size and material. For example, replacing it with a cup bottom insert 60 of a smaller size will increase the thickness of the inner bottom of the formed cup. Replacing the cup bottom insert 60 with one made of a smoother material can change the smoothness of the cup bottom wall.

[0030] This design greatly satisfies diverse needs for businesses. Those who frequently add toppings can improve the strength and puncture resistance of the disposable milk tea cup bottom by replacing the appropriate cup bottom insert 60, while maintaining cost control, as only the insert 60 needs to be replaced, not the entire mold. Businesses that rarely add toppings can choose the standard insert 60, ensuring the bottom thickness matches other parts, meeting their need for low cost and guaranteed quality. Businesses wishing to differentiate beverage price ranges can easily produce high-end and low-end milk tea cups with varying strengths by changing the insert 60. From the mold's perspective, adjusting the bottom performance by flexibly replacing the insert 60 eliminates the need for large-scale mold structure changes, reducing mold manufacturing and time costs, improving production efficiency, and enhancing product competitiveness in the market.

[0031] Please see Figure 2-4 Based on the above technical solution, it is further proposed that a square positioning block 61 be formed at the lower end of the cup bottom insert 60, and a square positioning groove 42 be formed on the inner side of the cup inner contour block 41 to engage with the square positioning block 61. The cup bottom insert 60 and the inner side of the cup inner contour block 41 are positioned and matched by the engagement of the square positioning block 61 and the square positioning groove 42. The square positioning block 61 at the lower end of the cup bottom insert 60 and the square positioning groove 42 on the inner side of the cup inner contour block 41 cooperate to ensure that the cup bottom insert 60 is accurately positioned during installation and avoids displacement, thereby ensuring the consistency of the position and size of the cup bottom formed each time and improving product quality.

[0032] A threaded hole 62 is provided at the lower end of the cup bottom insert 60, and a countersunk hole 43 extending through to the upper end of the lower end of the cup inner inner contour block 41 is provided. The cup bottom insert 60 and the cup inner inner contour block 41 are connected by screws through the threaded hole 62 and the countersunk hole 43. The screw connection through the threaded hole 62 and the countersunk hole 43 not only makes the connection between the cup bottom insert 60 and the cup inner inner contour block 41 stable and prevents it from loosening due to the impact of high pressure material during injection molding, but also makes it easy to disassemble and replace different cup bottom inserts 60 to meet diverse production needs.

[0033] A truncated cone 32 is formed at the lower end of the upper mold core 30. A contour groove 31 on the outer side of the cup body is formed on the truncated cone 32. A conical groove 44 is formed on the lower mold core 40 that engages with the truncated cone 32. A contour block 41 on the inner side of the cup body is formed in the conical groove 44. The upper mold core 30 and the lower mold core 40 are oriented and engaged through the engagement of the truncated cone 32 and the conical groove 44. The truncated cone 32 at the lower end of the upper mold core 30 engages with the conical groove 44 on the lower mold core 40, realizing the oriented engagement of the upper and lower mold cores 40. This structure can effectively improve the mold closing accuracy, ensure the accuracy of the mold cavity shape, thereby improving the overall molding quality of the disposable cup body, reducing the defect rate caused by mold closing deviation, and also enhancing the stability of the connection between various parts of the mold and extending the service life of the mold.

[0034] Please see Figure 1-2 Based on the above technical solution, it is further proposed that guide rods 70 are connected at the corners of the upper mold body 10 and the lower mold body 20, and the upper mold body 10 and the lower mold body 20 are oriented and connected through the guide rods 70; the upper mold body 10 includes an upper template 11, a hot runner plate 12 installed on the upper template 11, and a panel 13 installed on the hot runner plate 12; the upper mold core 30 is embedded in the upper template 11; the panel 13 is provided with a glue inlet 14 that connects to the hot runner plate 12; the hot runner plate... The upper mold core 30 is equipped with a hot runner system 15, which is connected to the injection insert 50. The lower mold body 20 includes a lower mold plate 21 and a base plate 22 installed at the lower end of the lower mold plate 21. The lower mold core 40 is embedded in the lower mold plate 21. The injection insert 50 includes a fixing block 51 and a hot nozzle 52 embedded in the fixing block 51. The fixing block 51 is embedded between the upper mold core 30 and the hot runner plate 12. The hot nozzle 52 is connected to the mold cavity. This ensures that the injection molding material can be injected into the mold cavity efficiently and stably, improves production efficiency, and reduces material waste. A protrusion 53 is provided at the lower end of the fixing block 51, and a sealing ring 54 is sleeved around the protrusion 53. The sealing ring 54 is sealed and connected to the upper end of the upper mold core 30. This effectively prevents material leakage during injection molding, ensures product quality, and extends the service life of the mold. There are four mold core assemblies, which are arrayed in the upper mold plate 11 and the lower mold plate 21. This greatly improves the production efficiency of disposable cups, meets the needs of large-scale production, and enhances the competitiveness of the product in the market.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A disposable cup injection mold comprising an upper mold body (10) and a lower mold body (20) oriented and docked to each other, characterized in that, A plurality of uniformly distributed mold core assemblies are arranged between the upper mold body (10) and the lower mold body (20), and the mold core assembly comprises an upper mold core (30), a lower mold core (40), a glue feeding insert (50) and a cup bottom insert (60). The upper mold core (30), the lower mold core (40), the glue feeding insert (50) and the cup bottom insert (60) form a mold cavity for forming a cup body therebetween, wherein: The upper mold core (30) and the lower mold core (40) are oriented and connected in a matching manner. The upper mold core (30) is provided with a cup body outside profiling groove (31) with an opening facing downward. The glue feeding insert (50) is connected to the top of the cup body outside profiling groove (31). The lower mold core (40) is formed with a cup body inside profiling block (41) on the upper mold core (40). The cup bottom insert (60) is detachably fixed on the cup body inside profiling block (41).

2. A disposable cup injection mold according to claim 1, wherein, A square positioning block (61) is formed at the lower end of the cup bottom insert (60). A square positioning groove (42) is formed on the cup body inside profiling block (41) and is connected to the square positioning block (61). The cup bottom insert (60) and the cup body inside profiling block (41) are positioned and matched by the connection of the square positioning block (61) and the square positioning groove (42).

3. The disposable cup injection mold of claim 1, wherein, A threaded hole (62) is formed at the lower end of the cup bottom insert (60). A countersunk hole (43) is formed at the lower end of the cup body inside profiling block (41) and penetrates to the upper end thereof. The cup bottom insert (60) and the cup body inside profiling block (41) are connected by screws through the threaded hole (62) and the countersunk hole (43).

4. The disposable cup injection mold of claim 1, wherein, A frustum (32) is formed at the lower end of the upper mold core (30). The cup body outside profiling groove (31) is formed on the frustum (32). A taper groove (44) is formed on the lower mold core (40) and is connected to the frustum (32). The cup body inside profiling block (41) is formed in the taper groove (44). The upper mold core (30) and the lower mold core (40) are oriented and connected in a matching manner by the connection of the frustum (32) and the taper groove (44).

5. The disposable cup injection mold of claim 1, wherein, The upper mold body (10) and the lower mold body (20) are connected by guide rods (70) at the corner positions thereof. The upper mold body (10) and the lower mold body (20) are oriented and connected in a matching manner by the guide rods (70). The upper mold body (10) comprises an upper mold plate (11), a hot runner plate (12) mounted on the upper mold plate (11), and a face plate (13) mounted on the hot runner plate (12). The upper mold core (30) is embedded in the upper mold plate (11). A glue inlet (14) is arranged on the face plate (13) and is connected to the hot runner plate (12). A hot runner system (15) is arranged in the hot runner plate (12) and is connected to the glue feeding insert (50). The lower mold body (20) comprises a lower mold plate (21) and a bottom plate (22) mounted at the lower end of the lower mold plate (21). The lower mold core (40) is embedded in the lower mold plate (21).

6. A disposable cup injection mold according to claim 5, wherein The glue feeding insert (50) comprises a fixed block (51) and a hot nozzle (52) embedded in the fixed block (51). The fixed block (51) is embedded between the upper mold core (30) and the hot runner plate (12). The hot nozzle (52) is connected to the mold cavity.

7. A disposable cup injection mold according to claim 6, wherein The fixed block (51) is provided with a protruding part (53) at the lower end, and the outer periphery of the protruding part (53) is sleeved with a sealing ring (54) which is sealingly connected with the upper end of the upper die core (30).

8. A disposable cup injection mold according to claim 5, wherein, The die core assembly is provided with four die core assemblies which are arrayed in the upper die plate (11) and the lower die plate (21).

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