Pre-embedded glass preservation box and preservation box cover mold

Abstract

The invention relates to the technical field of preservation boxes, and discloses a pre-embedded glass preservation box and a preservation box cover mold, the pre-embedded glass preservation box comprises a box body, a box cover and a sealing ring, glass is arranged in the box cover, an inner convex part is arranged on the inner wall of the box cover, the inner convex part is sunken, an air hole is formed in the surface of the inner convex part, and a sealing plug is embedded in the air hole in a sealed mode; a pull block is fixedly arranged at the upper end of the outer wall of the inner protruding part, the end of the pull block protrudes out of the box cover, and the sealing ring is arranged at the lower end of the outer wall of the box cover in a sleeved mode and makes contact with the upper end of the inner wall of the box body in a sealed mode. According to the pre-embedded glass preservation box and the preservation box cover mold, stable sealing of the box body and the box cover can be guaranteed, meanwhile, when the preservation box needs to be opened, the box cover and the box body can be rapidly separated through the arrangement of the externally-protruding pulling plate, the opening and closing convenience of the preservation box is improved, and meanwhile under the action of anti-skid stripes, the preservation box is not prone to falling off. And the stability in the drawing process of the box cover is further improved, and the using effect of the preservation box is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fresh-keeping boxes, and particularly to a built-in glass fresh-keeping box and a mold for a fresh-keeping box lid. Background Art

[0002] A built-in glass fresh-keeping box is a fresh-keeping container mainly made of glass. Its core feature is that after the glass material is processed by a special process, it has the characteristics of high temperature resistance, temperature difference resistance, and strong sealing performance, and is suitable for food storage and preservation. When the existing glass fresh-keeping boxes are prepared, the lid part is generally made of plastic material. Because of the use of plastic material, the lid of the fresh-keeping box will be formed by means of an injection mold during preparation.

[0003] For example, the patent document with the publication number CN212023426U discloses a glass fresh-keeping box. The fresh-keeping box includes a box body and a lid. The box body is made of glass and can be integrally formed by glass. The lid includes a panel made of glass, a rubber ring coated on the outer periphery of the panel, and two buckle components respectively arranged on both sides of the rubber ring. The rubber ring can be formed by directly injecting and molding on the outer periphery of the panel. The rubber ring is provided with an annular sealing strip, and the sealing strip extends downward from the lower end of the rubber ring and is inclined toward the center of the rubber ring.

[0004] However, when the above fresh-keeping box is in use, the surface of its lid is flat and is directly inserted and fixed with the box body. When the fresh-keeping box is opened, there is no large pulling space on the surface of the lid to open the lid, which reduces the use effect of the lid. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present invention provides a built-in glass fresh-keeping box and a mold for a fresh-keeping box lid, which have the advantage of being able to provide a protruding pulling component on the surface of the lid, facilitating the rapid separation of the lid from the box body, and solving the problem that when the fresh-keeping box is in use, the surface of its lid is flat and is directly inserted and fixed with the box body, so that when the fresh-keeping box is opened, there is no large pulling space on the surface of the lid to open the lid, which reduces the use effect of the lid.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present invention provides the following technical solutions: A built-in glass fresh-keeping box and a mold for a fresh-keeping box lid, including a box body, a lid, and a sealing ring. There is glass inside the lid. An inner convex part is provided on the inner wall of the lid. The inner convex part is recessed and provided with air holes on its surface. A sealing plug is hermetically embedded in the air holes.

[0009] A pulling block is fixedly provided at the upper end of the outer wall of the inner convex part, and the end of the pulling block protrudes from the lid.

[0010] The sealing ring is sleeved on the lower end of the outer wall of the box cover, and the sealing ring is in contact with and sealed against the upper end of the inner wall of the box body.

[0011] Preferably, a plurality of anti-slip stripes are formed on the surface of the pulling block.

[0012] Preferably, an annular groove is formed in the upper end of the inner wall of the box cover, and the glass is embedded in the annular groove.

[0013] Preferably, an annular slot is formed in the top of the sealing ring, and the annular slot is in plug-in fit with the bottom of the box cover. A sealing connection part is arranged at the bottom of the sealing ring, and the lower end of the longitudinal section of the sealing connection part is arc-shaped.

[0014] A fresh-keeping box cover mold includes the fresh-keeping box cover according to any one of the claims. A female mold core and a male mold core are arranged outside the box cover. The outer part of the female mold core is fixedly sleeved with an upper template. An upper mold panel is fixedly arranged at the top of the upper template. A main runner is fixedly embedded at the top of the upper mold panel. The outer part of the male mold core is fixedly sleeved with a lower template. Square irons are fixedly arranged at the inner sides of the bottom ends of the lower template. A lower mold panel is fixedly arranged at the common bottom of the two square irons. A push plate is arranged between the two square irons. A plurality of ejector pins are fixedly arranged at the top of the push plate. The upper ends of the plurality of ejector pins penetrate into the lower template and are in penetrating fit with the top of the male mold core. A push plate fixing plate is fixedly arranged at the bottom of the push plate. A plurality of return springs are arranged between the bottom of the push plate and the lower template. The two ends of the return spring are respectively in contact with the lower template and the push plate.

[0015] Preferably, a plurality of spaced water channels are formed in the side part of the upper template. A water pipe is embedded in the water channel. One end of the water pipe extending into the upper template is communicated with the female mold core, and the other end of the water pipe is communicated with a water nozzle.

[0016] Preferably, guide grooves are formed at the four corners inside the lower template. Guide posts are fixedly embedded in the inner walls of the guide grooves. Guide sleeves are slidably sleeved on the outer parts of the plurality of guide posts. The lower ends of the guide sleeves are slidably arranged in the guide grooves, and the tops of the guide sleeves are fixedly connected with the upper template.

[0017] Preferably, a limiting sleeve plate is fixedly arranged on the outer wall of the lower template. The limiting sleeve plate is U-shaped in cross section. A limiting insertion plate is slidably penetrated through the inside of the limiting sleeve plate. The lower end of the limiting insertion plate is fixedly connected with the outer wall of the push plate fixing plate.

[0018] Connection grooves are formed in the inner walls of both the upper template and the lower template. Positioning blocks are fixedly screwed and fixed on the inner walls of the two connection grooves. The two positioning blocks are in plug-in fit. One positioning block is convex-shaped, and the other positioning block is concave-shaped.

[0019] (3) Beneficial effects

[0020] Compared with the prior art, the present invention provides an embedded glass fresh-keeping box and a mold for the fresh-keeping box cover, having the following beneficial effects:

[0021] 1. For the embedded glass fresh-keeping box and the mold for the fresh-keeping box cover, through the provided box body, box cover, sealing ring, sealing plug, ventilation holes, pull plate, inner convex part and anti-slip stripes, the stable sealing of the box body and the box cover can be ensured. At the same time, when it is necessary to open the fresh-keeping box, through the setting of the externally protruding pull plate, the box cover can be quickly separated from the box body, improving the opening and closing convenience of the fresh-keeping box. At the same time, under the action of the anti-slip stripes, the stability during the pulling process of the box cover is further improved, and the use effect of the fresh-keeping box is improved.

[0022] 2. For the embedded glass fresh-keeping box and the mold for the fresh-keeping box cover, through the provided male mold core, female mold core, upper template, lower template, push plate, ejector pin and push plate fixing plate, a complete mold for the fresh-keeping box cover can be formed with fewer mold parts. While facilitating the injection molding of the fresh-keeping box cover, the ejection convenience after the box cover is molded can also be improved, and the injection molding effect of the fresh-keeping box cover is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of an embedded glass fresh-keeping box proposed by the present invention;

[0024] Figure 2 is Figure 1 an exploded view of the fresh-keeping box in;

[0025] Figure 3 is Figure 2 an enlarged structural view of part A in;

[0026] Figure 4 is Figure 1 a three-dimensional structural schematic diagram of the sealing ring in;

[0027] Figure 5 is a schematic structural diagram of a mold for a fresh-keeping box cover proposed by the present invention;

[0028] Figure 6 is Figure 5 an enlarged structural view of part B in;

[0029] Figure 7 is Figure 5 an enlarged view of part of the structure in.

[0030] In the figure: 1, box body; 2, box cover; 3, sealing ring; 4, glass; 5, inner convex part; 6, ventilation hole; 7, sealing plug; 8, pulling block; 9, anti-slip stripes; 10, annular groove; 11, annular slot; 12, sealing connection part; 13, female mold core; 14, male mold core; 15, upper template; 16, upper mold panel; 17, main runner; 18, lower template; 19, square iron; 20, lower mold panel; 21, ejector plate; 22, ejector plate fixing plate; 23, return spring; 24, water channel; 25, water pipe; 26, water nozzle; 27, guide pillar; 28, guide sleeve; 29, limit sleeve plate; 30, limit insertion plate; 31, connection groove; 32, positioning block; 33, ejector pin. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1-7 , a pre-embedded glass fresh-keeping box, including a box body 1, a box cover 2 and a sealing ring 3. A glass 4 is provided inside the box cover 2. An annular groove 10 is opened at the upper end of the inner wall of the box cover 2. The glass 4 is embedded in the annular groove 10 to ensure that the glass 4 will not shift or fall off during use, and at the same time protect the glass 4 from external impacts. An inner convex part 5 is provided on the inner wall of the box cover 2. The inner convex part 5 is recessed, and ventilation holes 6 are opened on the surface. A sealing plug 7 is hermetically embedded in the ventilation holes 6. When ventilation is required, the sealing plug 7 can be removed to allow air circulation inside and outside the box, adjust the humidity inside the box, and prevent items from deteriorating due to excessive humidity;

[0033] A pulling block 8 is fixedly provided at the upper end of the outer wall of the inner convex part 5. A plurality of anti-slip stripes 9 are opened on the surface of the pulling block 8. The end of the pulling block 8 protrudes from the box cover 2. The anti-slip stripes 9 increase the friction force, facilitating the user to easily operate even in a humid environment;

[0034] The sealing ring 3 is sleeved on the lower end of the outer wall of the box cover 2. The sealing ring 3 is in contact and sealed with the upper end of the inner wall of the box body 1. An annular slot 11 is opened at the top of the sealing ring 3. The annular slot 11 is in plug-in fit with the bottom of the box cover 2. A sealing connection part 12 is provided at the bottom of the sealing ring 3. The lower end of the longitudinal section of the sealing connection part 12 is arc-shaped. The sealing ring 3 is sleeved on the lower end of the outer wall of the box cover 2 and is in contact and sealed with the upper end of the inner wall of the box body 1 to ensure the sealing performance of the fresh-keeping box, prevent external air and moisture from entering the box, and keep the freshness of the items inside the box;

[0035] A fresh-keeping box cover mold. The outer part of the box cover 2 is provided with a female mold core 13 and a male mold core 14. An upper template 15 is fixedly sleeved outside the female mold core 13. The top of the upper template 15 is fixedly provided with an upper mold panel 16. The top of the upper mold panel 16 is fixedly embedded with a main runner 17 for injecting molten plastic raw materials. A plurality of water channels 24 are arranged at intervals on the side of the upper template 15. A water pipe 25 is embedded inside the water channel 24. One end of the water pipe 25 extending into the upper template 15 is communicated with the female mold core 13. The other end of the water pipe 25 is communicated with a water nozzle 26. The female mold core 13 is cooled by circulating cooling water to accelerate the cooling and molding of the plastic.

[0036] A lower template 18 is fixedly sleeved outside the male mold core 14. Guide grooves are opened at the four corners inside the lower template 18. Guide posts 27 are fixedly embedded on the inner walls of the guide grooves. A guide sleeve 28 is slidably sleeved outside the plurality of guide posts 27. The lower end of the guide sleeve 28 is slidably arranged in the guide groove. The top of the guide sleeve 28 is fixedly connected with the upper template 15 to ensure the accurate positioning when the upper mold and the lower mold are closed, and avoid the dimensional deviation of the box cover caused by misalignment. Square irons 19 are fixedly provided at both ends of the bottom of the lower template 18. A lower mold panel 20 is fixedly provided at the common bottom of the two square irons 19. A push plate 21 is arranged between the two square irons 19. A plurality of ejector pins 33 are fixedly provided at the top of the push plate 21 to push the box cover 2 away from the male mold core 14 after molding, facilitating part taking. The upper ends of the plurality of ejector pins 33 penetrate into the lower template 18 and are in through-fit with the top of the male mold core 14. A push plate fixing plate 22 is fixedly provided at the bottom of the push plate 21. A plurality of return springs 23 are arranged between the bottom of the push plate 21 and the lower template 18. The two ends of the return spring 23 are respectively in contact and cooperation with the lower template 18 and the push plate 21.

[0037] A limit sleeve plate 29 is fixedly provided on the outer wall of the lower template 18. The limit sleeve plate 29 is arranged with a U-shaped cross-section. A limit insertion plate 30 is slidably penetrated inside the limit sleeve plate 29. The lower end of the limit insertion plate 30 is fixedly connected with the outer wall of the push plate fixing plate 22.

[0038] Connection grooves 31 are opened on the inner walls of both the upper template 15 and the lower template 18. Positioning blocks 32 are fixedly screwed on the inner walls of the two connection grooves 31. The two positioning blocks 32 are inserted and matched. One positioning block 32 is arranged in a convex shape, and the other positioning block 32 is arranged in a concave shape. The convex and concave positioning blocks of the upper mold and the lower mold are inserted and matched to further improve the mold closing accuracy.

[0039] In summary, when using this embedded glass fresh-keeping box, after putting food into the box body 1, pick up the box cover 2, align the sealing connection part 12 (arc structure) at the bottom of the sealing ring 3 with the upper end of the inner wall of the box body 1, and gently press down the box cover 2 until the sealing ring 3 is completely embedded into the inner wall of the box body 1 to form a sealing structure. At this time, the air holes 6 are blocked by the sealing plugs 7, which can prevent external air from entering or the smell inside the box from overflowing, and extend the food preservation period.

[0040] When the fresh-keeping box needs to be opened, pinch the pull block 8 with your fingers (the anti-slip stripes 9 on the surface can increase the friction), and pull the pull block 8 outwards, driving the box cover 2 to separate from the box body 1. Since the inner convex part 5 is designed to be concave, the pull block 8 protrudes from the surface of the box cover 2, providing sufficient pulling space and avoiding the difficulty of opening caused by the flat surface of the box cover.

[0041] If it is necessary to release the steam inside the box (such as after heating), the sealing plug 7 can be pulled out first, and the internal and external air pressures can be balanced through the ventilation holes 6, and then the box cover 2 can be easily opened to prevent excessive opening resistance caused by the air pressure difference.

[0042] The working principle of the fresh-keeping box mold: Before preparing the fresh-keeping box cover, confirm that the master mold core 13, the male mold core 14, the guide pillar 27, the ejector pin 33, etc. are not worn or deformed, the positioning block 32 is clean without debris, and check whether the water channel 24 is unobstructed. Connect the water nozzle 26 to the cooling water circulation system to ensure normal cooling function. Then connect the mold to the injection molding machine and put the plastic raw material into the injection molding machine. In the initial state, the upper template 15 and the lower template 18 are in a separated state. The push plate 21 is at the lowest position under the action of the return spring 23, and the ejector pin 33 does not protrude from the surface of the male mold core 14. During the mold closing operation, the injection molding machine drives the upper template 15 to move downward, and the guide pillar 27 and the guide sleeve 28 start to cooperate for guiding to ensure that the upper mold and the lower mold are vertically aligned. When the master mold core 13 and the male mold core 14 are close, the convex-concave positioning blocks 32 are inserted and matched to further calibrate the mold position, forming a complete cavity for the box cover molding. After the mold closing is completed, the mold is tightly closed, and the cavities of the detailed structures such as the annular slot 11 of the sealing ring 3 and the pull block 8 are completely formed.

[0043] The injection molding machine injects the molten PP plastic into the mold cavity at high pressure through the main runner 17. The plastic fills the space between the master mold core 13 and the male mold core 14 in sequence, including complex structures such as the box cover body, the inner convex part 5, the pull block 8, and the annular groove 10, until the cavity is completely filled. Then the injection molding machine maintains the pressure for a period of time to compensate for the volume change caused by the cooling shrinkage of the plastic, ensuring that the box cover has a full size and a smooth surface. During this process, the cooling water flows into the water pipe 25 from the water nozzle 26 and flows through the water channel 24 in the upper template 15 to flow through the master mold core 13, taking away the heat released by the solidification of the plastic.

[0044] When the injection molding work is completed, the injection molding machine drives the upper template 15 to move upward and separate from the lower template 18. At this time, the formed box cover 2 is tightly attached to the male mold core 14 due to cooling shrinkage. The injection molding machine pushes the push plate fixing plate 22 upward, driving the push plate 21 and the ejector pin 33 to rise synchronously. The ejector pin 33 passes through the lower template 18 and abuts against the bottom of the box cover 2 (non-appearance surface), ejecting the box cover from the male mold core 14 to complete the demolding. The return spring 23 is compressed during this process, storing the return energy. When the box cover is far away from the male mold core 14, the box cover is taken out manually to complete the injection molding work of the box cover.

[0045] It should be noted that the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements that are inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0046] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An embedded glass fresh-keeping box, comprising a box body (1), a box cover (2) and a sealing ring (3), characterized in that: The interior of the box cover (2) is provided with glass (4). The inner wall of the box cover (2) is provided with an inner convex part (5). The inner convex part (5) is recessed, and the surface is provided with ventilation holes (6). A sealing plug (7) is hermetically embedded in the ventilation holes (6). The upper end of the outer wall of the inner convex part (5) is fixedly provided with a pull block (8), and the end of the pull block (8) protrudes from the box cover (2). The sealing ring (3) is sleeved on the lower end of the outer wall of the box cover (2), and the sealing ring (3) is in contact and sealed with the upper end of the inner wall of the box body (1).

2. The embedded glass fresh-keeping box according to claim 1, characterized in that: The surface of the pull block (8) is provided with a plurality of anti-slip stripes (9).

3. The embedded glass fresh-keeping box according to claim 1, characterized in that: The upper end of the inner wall of the box cover (2) is provided with an annular groove (10), and the glass (4) is embedded in the annular groove (10).

4. The embedded glass fresh-keeping box according to claim 1, wherein: The top of the sealing ring (3) is provided with an annular slot (11). The annular slot (11) is inserted and matched with the bottom of the box cover (2). The bottom of the sealing ring (3) is provided with a sealing connection part (12), and the lower end of the longitudinal section of the sealing connection part (12) is arc-shaped.

5. A fresh-keeping box lid mold, characterized in that, Including the fresh-keeping box cover according to any one of claims 1-4, the outside of the box cover (2) is provided with a female mold core (13) and a male mold core (14). The outside of the female mold core (13) is fixedly sleeved with an upper template (15). The top of the upper template (15) is fixedly provided with an upper mold panel (16). The main runner (17) is fixedly embedded in the top of the upper mold panel (16). The outside of the male mold core (14) is fixedly sleeved with a lower template (18). Square irons (19) are fixedly provided at both ends of the bottom of the lower template (18). A push plate (21) is arranged between the two square irons (19). The top of the push plate (21) is fixedly provided with a plurality of ejector pins (33). The upper ends of the plurality of ejector pins (33) penetrate into the lower template (18) and are in penetration and cooperation with the top of the male mold core (14). The bottom of the push plate (21) is fixedly provided with a push plate fixing plate (22). A plurality of return springs (23) are arranged between the bottom of the push plate (21) and the lower template (18). The two ends of the return spring (23) are in contact and cooperation with the lower template (18) and the push plate (21) respectively.

6. The fresh-keeping box cover mold according to claim 5, characterized in that: A plurality of spaced water channels (24) are arranged on the side of the upper template (15). A water pipe (25) is embedded in the water channels (24). One end of the water pipe (25) extending into the upper template (15) is communicated with the female mold core (13), and the other end of the water pipe (25) is communicated with a water nozzle (26).

7. A fresh-keeping box lid mold according to claim 5, characterized in that: Guide grooves are respectively arranged at the four corners inside the lower template (18). Guide posts (27) are fixedly embedded in the inner walls of the guide grooves. Guide sleeves (28) are slidably sleeved on the outside of the plurality of guide posts (27). The lower ends of the guide sleeves (28) are slidably arranged in the guide grooves, and the tops of the guide sleeves (28) are fixedly connected with the upper template (15).

8. A fresh-keeping box cover mold according to claim 5, characterized in that: A limiting sleeve plate (29) is fixedly arranged on the outer wall of the lower template (18). The limiting sleeve plate (29) is arranged with a U-shaped cross-section. A limiting insertion plate (30) is slidably inserted into the interior of the limiting sleeve plate (29). The lower end of the limiting insertion plate (30) is fixedly connected to the outer wall of the push plate fixing plate (22). Connecting grooves (31) are formed in the inner walls of the upper template (15) and the lower template (18). Positioning blocks (32) are fixedly arranged on the inner walls of the two connecting grooves (31) by screwing. The two positioning blocks (32) are inserted and matched. One of the positioning blocks (32) is arranged in a convex shape, and the other positioning block (32) is arranged in a concave shape.

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