High-speed forming mold for thin-wall fast food packaging box

Abstract

The utility model belongs to the technical field of molds, and relates to a high-speed forming mold for a thin-wall fast food packaging box. The fast food packaging box forming mold comprises a fast food packaging box forming lower mold and a fast food packaging box forming upper mold, and an injection molding piece is arranged above the fast food packaging box forming upper mold. In the injection molding process, the packaging box forming protrusion and the packaging box forming concave cavity are attached to each other to form two complete cavities, molten materials are injected into the injection molding connecting part through the injection molding part, the molten materials are conveyed to the lower mold flow dividing part through the injection molding connecting part to be divided, the molten materials can synchronously flow into the two cavities, and the injection molding effect is good. Two complete plastic parts are synchronously formed, the connecting buckle forming lower portion is matched with the connecting buckle forming upper portion, the side connecting buckle structure of the packaging box plastic parts can be synchronously formed, secondary machining treatment is not needed, the forming speed is high, mold opening is conducted after injection molding is completed, the side edge ejection structure is moved upwards, and the two formed plastic parts are synchronously ejected out and demolded; and large-area ejection is adopted, so that the ejection efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a high-speed molding mold for thin-walled fast-food packaging boxes. Background Technique

[0002] The thin-walled fast-food packaging box is made of plastic materials, with low cost and light weight, so it is widely welcomed in the catering market. At present, the thin-walled fast-food packaging box is injection-molded through an injection mold. It is difficult to mold multiple plastic parts at one time during injection molding and at the same time mold the connecting buckle structure on the side of the packaging box, and subsequent finishing treatment is required. Many processes lead to slow molding speed, affecting production efficiency and cost. Therefore, there is an urgent need to design a high-speed molding mold for thin-walled fast-food packaging boxes that can overcome the above defects.

[0003] In order to overcome the deficiencies of the prior art, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses a double-push plate ejection structure for a thin-walled fast-food packaging box mold [Application No.: 202020538141.X], which includes a molding module. A double-push plate structure is embedded inside the molding module. The double-push plate structure includes a first push plate directly connected to the molding module. A second push plate is also connected to the first push plate. The second push plate and the first push plate are overlapped with each other. A protrusion structure is provided inside the molding module. The protrusion structure sequentially penetrates through the first push plate and the second push plate. A locking buckle forming ring is formed by surrounding the first push plate and the protrusion structure. An anti-theft buckle forming groove is provided at one of the corners of the locking buckle forming ring. And a plurality of cooling communication grooves are also provided inside the molding module. Summary of the Invention

[0004] The purpose of the utility model is to provide a high-speed molding mold for thin-walled fast-food packaging boxes in view of the above problems.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-speed forming mold for a thin-walled fast-food packaging box, comprising a lower mold for forming the fast-food packaging box and an upper mold for forming the fast-food packaging box. An injection molding part is arranged above the upper mold for forming the fast-food packaging box. Two packaging box forming protrusions are arranged in the lower mold for forming the fast-food packaging box and are symmetrically arranged along the center line of the lower mold for forming the fast-food packaging box. Two packaging box forming cavities are arranged in the upper mold for forming the fast-food packaging box and are symmetrically arranged along the center line of the upper mold for forming the fast-food packaging box. The positions of the packaging box forming protrusions and the packaging box forming cavities correspond to each other and their shapes are matched. A lower mold shunt part is arranged between the two packaging box forming protrusions, and an injection molding connection part is arranged between the two packaging box forming cavities. One end of the injection molding connection part is connected to the injection molding part, and the other end is connected to the lower mold shunt part. A lower part of the connection buckle is arranged on the side of the packaging box forming protrusion, and an upper part of the connection buckle is arranged in the packaging box forming cavity. The lower part of the connection buckle and the upper part of the connection buckle are arranged opposite to each other. A side ejecting structure capable of reciprocating linearly in the vertical direction is arranged below the lower mold for forming the fast-food packaging box, and the side ejecting structure is arranged staggered with the lower part of the connection buckle.

[0007] In the above-mentioned high-speed forming mold for a thin-walled fast-food packaging box, the side ejecting structure includes four ejecting blocks arranged in the lower mold for forming the fast-food packaging box. Two ejecting blocks correspond to one packaging box forming protrusion, and the ejecting blocks are arranged staggered with the lower part of the connection buckle.

[0008] In the above-mentioned high-speed forming mold for a thin-walled fast-food packaging box, a top surface part is arranged on the side of the ejecting block close to the packaging box forming protrusion, and the horizontal height of the top surface part is less than the horizontal height of the ejecting block.

[0009] In the above-mentioned high-speed forming mold for a thin-walled fast-food packaging box, a straight ejecting connecting rod and a connecting rod fixing plate are arranged at the bottom of the ejecting block, and the straight ejecting connecting rod is connected to the connecting rod fixing plate.

[0010] In the above-mentioned high-speed forming mold for a thin-walled fast-food packaging box, anti-deviation iron blocks are arranged on both sides of the connecting rod fixing plate, and the connecting rod fixing plate is slidably matched with the anti-deviation iron blocks.

[0011] In the above-mentioned high-speed forming mold for a thin-walled fast-food packaging box, the lower part of the connection buckle includes a connection buckle forming protrusion arranged on the side of the packaging box forming protrusion, and the upper part of the connection buckle includes a connection buckle forming cavity arranged in the packaging box forming cavity. The positions of the connection buckle forming protrusion and the connection buckle forming cavity correspond to each other and their shapes are matched.

[0012] In the above-mentioned high-speed forming mold for a thin-walled fast-food packaging box, the injection molding part includes an injection molding main board arranged above the upper mold for forming the fast-food packaging box, and an injection molding main hole is arranged in the injection molding main board.

[0013] In the above-mentioned high-speed forming die for thin-walled fast-food packaging boxes, the injection connection part includes an upper die runner disposed between two forming cavities of the packaging boxes, and the upper die runner is communicated with the main injection hole.

[0014] In the above-mentioned high-speed forming die for thin-walled fast-food packaging boxes, the lower die shunt part includes a lower die runner disposed between two forming protrusions of the packaging boxes, and the lower die runner is communicated with the upper die runner.

[0015] In the above-mentioned high-speed forming die for thin-walled fast-food packaging boxes, a residue ejecting rod is provided at the bottom of the lower die runner.

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

[0017] 1. During the injection molding process of the present utility model, the lower die for forming the fast-food packaging box and the upper die for forming the fast-food packaging box are moved closer to each other, so that the forming protrusions of the packaging box are fitted with the forming cavities of the packaging box to form two complete cavities. The molten material is injected into the injection connection part through the injection part, and the molten material is sent to the lower die shunt part through the injection connection part for shunting, so that the molten material can flow into the two cavities synchronously, and two complete plastic parts can be formed synchronously. The lower part of the connecting buckle forming part is matched with the upper part of the connecting buckle forming part, and the side connecting buckle structure of the packaging box plastic part can be formed synchronously without secondary processing. The forming speed is fast. After the injection molding is completed, the mold is opened, and the side ejecting structure is moved upward to eject the two formed plastic parts synchronously. The large-area ejection is adopted, and the ejection efficiency is high.

[0018] 2. After the injection molding and mold opening of the present utility model, by moving the residue ejecting rod, the residual cooling material located at the lower die runner and the upper die runner can be ejected, so as to avoid remaining in the mold and affecting the next injection molding.

[0019] Other advantages, objectives and features of the present utility model will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the present utility model. Brief Description of the Drawings

[0020] Figure 1 is a structural schematic diagram of the present utility model.

[0021] Figure 2 is a partial structural schematic diagram of the present utility model.

[0022] Figure 3 is a partial structural schematic diagram of the present utility model in another direction.

[0023] Figure 4 is a structural schematic diagram of the upper die for forming the fast-food packaging box.

[0024] In the figure: the lower die 1 for forming a fast-food packaging box, the upper die 2 for forming a fast-food packaging box, the injection molded part 3, the convex part 4 for forming the packaging box, the concave cavity 5 for forming the packaging box, the lower die shunt part 6, the injection connection part 7, the lower part 8 for forming the connecting buckle, the upper part 9 for forming the connecting buckle, the side ejecting structure 10, the ejecting block 11, the top surface part 12, the direct ejecting connecting rod 13, the connecting rod fixing plate 14, the anti-deviation iron 15, the convex part 16 for forming the connecting buckle, the concave cavity 17 for forming the connecting buckle, the injection main board 18, the injection main hole 19, the upper die shunt channel 20, the lower die shunt channel 21, the waste material ejecting rod 22. Detailed implementation manners

[0025] The present utility model will be further described below in conjunction with the accompanying drawings.

[0026] As Figures 1-4 shown, a high-speed forming die for a thin-walled fast-food packaging box includes a lower die 1 for forming a fast-food packaging box and an upper die 2 for forming a fast-food packaging box. An injection molded part 3 is provided above the upper die 2 for forming a fast-food packaging box. Two convex parts 4 for forming the packaging box that are symmetric with respect to the center line of the lower die 1 for forming a fast-food packaging box are provided in the lower die 1 for forming a fast-food packaging box. Two concave cavities 5 for forming the packaging box that are symmetric with respect to the center line of the upper die 2 for forming a fast-food packaging box are provided in the upper die 2 for forming a fast-food packaging box. The positions of the convex part 4 for forming the packaging box and the concave cavity 5 for forming the packaging box correspond to each other and the shapes are matched. A lower die shunt part 6 is provided between the two convex parts 4 for forming the packaging box. An injection connection part 7 is provided between the two concave cavities 5 for forming the packaging box. One end of the injection connection part 7 is connected to the injection molded part 3, and the other end is connected to the lower die shunt part 6. A lower part 8 for forming the connecting buckle is provided on the side of the convex part 4 for forming the packaging box. An upper part 9 for forming the connecting buckle is provided in the concave cavity 5 for forming the packaging box. The lower part 8 for forming the connecting buckle and the upper part 9 for forming the connecting buckle are arranged opposite to each other. A side ejecting structure 10 that can reciprocate linearly in the vertical direction is provided below the lower die 1 for forming a fast-food packaging box. The side ejecting structure 10 and the lower part 8 for forming the connecting buckle are arranged staggeredly.

[0027] In this embodiment, during the injection molding process, the lower die 1 for forming a fast-food packaging box and the upper die 2 for forming a fast-food packaging box are moved closer to each other, so that the convex part 4 for forming the packaging box and the concave cavity 5 for forming the packaging box are fitted together to form two complete cavities. The molten material is injected into the injection connection part 7 through the injection molded part 3. The molten material is sent to the lower die shunt part 6 through the injection connection part 7 for shunting, and the molten material can flow into the two cavities synchronously, and two complete plastic parts are formed synchronously. The lower part 8 for forming the connecting buckle and the upper part 9 for forming the connecting buckle cooperate with each other, and the side connecting buckle structure of the packaging box plastic part can be formed synchronously without secondary processing. The forming speed is fast. After the injection molding is completed, the mold is opened, and the side ejecting structure 10 is moved upward to eject and demold the two formed plastic parts synchronously. The large-area ejection is adopted, and the ejection efficiency is high.

[0028] Combined with Figures 1-4As shown in the figure, the side ejecting structure 10 includes four ejecting blocks 11 arranged in the lower mold 1 for forming fast food packaging boxes. Two ejecting blocks 11 correspond to one packaging box forming protrusion 4. The ejecting blocks 11 and the lower part 8 of the connecting buckle forming are arranged alternately. On the side of the ejecting block 11 close to the packaging box forming protrusion 4, there is an ejecting surface 12. The horizontal height of the ejecting surface 12 is less than the horizontal height of the ejecting block 11. At the bottom of the ejecting block 11, there are a direct ejecting connecting rod 13 and a connecting rod fixing plate 14. The direct ejecting connecting rod 13 and the connecting rod fixing plate 14 are connected. On both sides of the connecting rod fixing plate 14, there are anti-deviation iron blocks 15. The connecting rod fixing plate 14 and the anti-deviation iron blocks 15 are in sliding fit with each other.

[0029] Specifically, during injection molding, the ejecting surface 12 is in contact with the lower mold 1 for forming fast food packaging boxes to form the edge surface structure of the plastic part. After injection molding, the mold is opened, the connecting rod fixing plate 14 is moved upward to drive the direct ejecting connecting rod 13 and the ejecting block 11 to synchronously eject the two formed plastic parts for demolding. By adopting large-area ejection, the ejection efficiency is high. The connecting rod fixing plate 14 and the anti-deviation iron blocks 15 are in sliding fit with each other to avoid angular deviation during the ejection process and improve the ejection accuracy.

[0030] The lower part 8 of the connecting buckle forming includes a connecting buckle forming protrusion 16 arranged on the side of the packaging box forming protrusion 4. The upper part 9 of the connecting buckle forming includes a connecting buckle forming cavity 17 arranged in the packaging box forming cavity 5. The position of the connecting buckle forming protrusion 16 corresponds to that of the connecting buckle forming cavity 17 and their shapes are matched.

[0031] In this embodiment, during injection molding, the connecting buckle forming protrusion 16 and the connecting buckle forming cavity 17 cooperate with each other to synchronously form the side connecting buckle structure of the packaging box plastic part, without the need for secondary processing, and the forming speed is fast.

[0032] The injection molded part 3 includes an injection molding main board 18 arranged above the upper mold 2 for forming fast food packaging boxes. An injection molding main hole 19 is arranged in the injection molding main board 18. The injection molding connecting part 7 includes an upper mold runner 20 arranged between two packaging box forming cavities 5. The upper mold runner 20 is communicated with the injection molding main hole 19. The lower mold runner part 6 includes a lower mold runner 21 arranged between two packaging box forming protrusions 4. The lower mold runner 21 is communicated with the upper mold runner 20.

[0033] In this embodiment, during injection molding, the molten material is injected into the upper mold runner 20 through the injection molding main hole 19 in the injection molding main board 18, and then flows into the lower mold runner 21 through the upper mold runner 20. The lower mold runner 21 can synchronously flow the molten material into the two cavities to synchronously form two complete plastic parts.

[0034] Combined with Figure 3 As shown in the figure, a residue ejecting rod 22 is arranged at the bottom of the lower mold runner 21.

[0035] In this embodiment, after the injection molding and mold opening are completed, by moving the residual material ejector rod 22, the residual cooled material located at the lower mold runner 21 and the upper mold runner 20 can be ejected, avoiding remaining in the mold and affecting the next injection molding.

[0036] The working principle of the present utility model is as follows:

[0037] During the injection molding process, the lower mold 1 for forming the fast food packaging box and the upper mold 2 for forming the fast food packaging box are moved closer to each other, so that the box forming protrusions 4 are fitted with the box forming cavities 5 to form two complete cavities. The molten material is injected into the upper mold runner 20 through the injection main hole 19 in the injection main board 18, and then flows into the lower mold runner 21 through the upper mold runner 20. The lower mold runner 21 can synchronously flow the molten material into the two cavities to simultaneously form two complete plastic parts. The connecting buckle forming protrusion 16 and the connecting buckle forming cavity 17 cooperate with each other to simultaneously form the side connecting buckle structure of the packaging box plastic part without the need for secondary processing, with a fast forming speed. The top surface 12 is fitted with the lower mold 1 for forming the fast food packaging box to form the edge surface structure of the plastic part. After the injection molding is completed and the mold is opened, the connecting rod fixing plate 14 is moved upward to drive the straight ejecting connecting rod 13 and the ejecting block 11 to simultaneously eject the two formed plastic parts for demolding. A large area ejection is adopted, with a high ejection efficiency. The connecting rod fixing plate 14 is in sliding fit with the anti-offset iron 15 to avoid angular deviation during the ejection process and improve the ejection accuracy.

[0038] After the injection molding and mold opening are completed, by moving the residual material ejector rod 22, the residual cooled material located at the lower mold runner 21 and the upper mold runner 20 can be ejected, avoiding remaining in the mold and affecting the next injection molding.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model.

[0040] Although terms such as the lower die 1 for forming fast food packaging boxes, the upper die 2 for forming fast food packaging boxes, the injection molded part 3, the convex part 4 for forming the packaging box, the concave cavity 5 for forming the packaging box, the lower die shunt part 6, the injection connection part 7, the lower part 8 for forming the connecting buckle, the upper part 9 for forming the connecting buckle, the side ejecting structure 10, the ejecting block 11, the top surface part 12, the direct ejecting connecting rod 13, the connecting rod fixing plate 14, the anti-deviation iron 15, the convex part 16 for forming the connecting buckle, the concave cavity 17 for forming the connecting buckle, the injection main board 18, the injection main hole 19, the upper die shunt channel 20, the lower die shunt channel 21, the residual material ejecting rod 22 are used more frequently in this text, it does not exclude the possibility of using other terms. These terms are only used to more conveniently describe and explain the essence of the present utility model, and interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A high-speed forming die for a thin-walled fast food packaging box, comprising a fast food packaging box forming lower die (1) and a fast food packaging box forming upper die (2), characterized in that: An injection molded part (3) is provided above the fast food packaging box forming upper mold (2), two packaging box forming protrusions (4) are provided in the fast food packaging box forming lower mold (1) and are aligned with the center line of the fast food packaging box forming lower mold (1), and two packaging box forming concave cavities (5) are provided in the fast food packaging box forming upper mold (2) and are aligned with the center line of the fast food packaging box forming upper mold (2), the packaging box forming protrusions (4) and the packaging box forming concave cavities (5) are positioned correspondingly and have matching shapes, a lower mold diverter (6) is provided between the two packaging box forming protrusions (4), and a lower mold diverter (6) is provided between the two packaging box forming concave cavities (5). An injection molding connection part (7) is provided, one end of the injection molding connection part (7) is connected to the injection molding part (3), and the other end is connected to the lower mold diverter (6); a connection buckle molding lower part (8) is provided on the side of the packaging box molding protrusion (4); a connection buckle molding upper part (9) is provided in the packaging box molding cavity (5); the connection buckle molding lower part (8) and the connection buckle molding upper part (9) are arranged opposite to each other; a side ejection structure (10) capable of reciprocating linear motion in a vertical direction is provided below the fast food packaging box molding lower mold (1); the side ejection structure (10) and the connection buckle molding lower part (8) are arranged alternately.

2. The high-speed forming mold for thin-walled fast food packaging box according to claim 1, characterized in that: The side ejection structure (10) comprises four ejection blocks (11) arranged in a fast food packaging box forming lower mold (1), two ejection blocks (11) corresponding to one packaging box forming protrusion (4), and the ejection blocks (11) and the connecting buckle forming lower part (8) are arranged alternately.

3. The high-speed forming mold for thin-walled fast food packaging box according to claim 2, characterized in that: The ejection block (11) is provided with a top surface portion (12) on one side close to the packaging box forming protrusion (4), and the horizontal height of the top surface portion (12) is smaller than the horizontal height of the ejection block (11).

4. The high-speed forming mold for thin-walled fast food packaging box according to claim 3, characterized in that: A straight top connecting rod (13) and a connecting rod fixing plate (14) are provided at the bottom of the ejection block (11), and the straight top connecting rod (13) and the connecting rod fixing plate (14) are connected.

5. The high-speed forming mold for thin-walled fast food packaging box according to claim 4, characterized in that: Anti-deflection irons (15) are provided on both sides of the connecting rod fixing plate (14), and the connecting rod fixing plate (14) and the anti-deflection irons (15) are slidably matched.

6. The high-speed forming die for thin-walled fast food packaging box according to claim 5, characterized in that: The connecting buckle molding lower part (8) includes a connecting buckle molding protrusion (16) arranged on the side of the packaging box molding protrusion (4), and the connecting buckle molding upper part (9) includes a connecting buckle molding cavity (17) arranged in the packaging box molding cavity (5), and the connecting buckle molding protrusion (16) and the connecting buckle molding cavity (17) correspond in position and have matching shapes.

7. The high-speed forming mold for thin-walled fast food packaging box according to claim 6, characterized in that: The injection molded part (3) comprises an injection molded main board (18) arranged above the fast food packaging box forming upper mold (2), and an injection molded main hole (19) is arranged in the injection molded main board (18).

8. The high-speed forming die for thin-walled fast food packaging box according to claim 7, characterized in that: The injection molding connection portion (7) comprises an upper mold flow channel (20) arranged between two packaging box molding cavities (5), and the upper mold flow channel (20) is connected to the injection molding main hole (19).

9. The high-speed forming die for thin-walled fast food packaging box according to claim 8, characterized in that: The lower mold flow divider (6) comprises a lower mold flow divider (21) arranged between two packaging box forming protrusions (4), and the lower mold flow divider (21) is connected to the upper mold flow divider (20).

10. The high-speed forming die for thin-walled fast food packaging box according to claim 9, characterized in that: A residual material ejection rod (22) is provided at the bottom of the lower mold runner (21).

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