Plastic processing and forming die body unit stacking structure

Abstract

The utility model provides a plastic processing and forming die body unit stacking structure, which relates to the technical field of film blowing and comprises a first die, a second die, a third die and a fourth die which are sequentially arranged and stacked, a first plastic runner is formed between the first die and the second die, and a second plastic runner is formed between the second die and the fourth die. A second plastic runner is formed between the third mold and the fourth mold, and a cooling isolation area is formed between the second mold and the third mold. The mold has the beneficial effects that the cooling isolation area can play an isolation role, so that the conditions that the temperature generated by the first plastic runner and the temperature generated by the second plastic runner are communicated and the plastic is deteriorated are avoided, the processing smoothness and the product quality are further improved, a plurality of molds can be conveniently stacked by the structure, and the production efficiency is improved. The effect of simultaneously manufacturing different plastic products is achieved, the occupied area of the mold is reduced, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic blown film, in particular to a stacked structure of plastic processing and forming die body units. Background Art

[0002] A blown film die is mainly a die used for injection molding of plastic parts. A specific-shaped and sized injection mold cavity is made inside it. After the fluid injection liquid enters the injection mold cavity with a specific shape and size inside the die and cools down, the fluid injection liquid can be solidified into an injection molded part with a specific shape and size, facilitating the processing of plastic parts with special shapes and sizes.

[0003] In the prior art, in the technical solution of a Chinese patent document (Publication No.: CN110385834B, Patent Name: A Plastic Injection Mold), it is disclosed that "it includes a main template, a sub-template, an upper mold provided on the main template, and a lower mold provided on the sub-template. An injection port is provided on the upper mold. An upper parting surface is provided on the upper mold. A lower parting surface is provided on the lower mold. An upper forming cavity is provided on the upper parting surface. A lower forming cavity is provided on the lower parting surface. Its feature is that it further includes a trimming cutter. The trimming cutter includes a trimming block and an extending mechanism. A trimming blade is provided on the trimming block. After mold splitting, the extending mechanism drives the trimming block to move to the edge position of the lower forming cavity. The trimming blade abuts against the edge of the lower forming cavity. A ejector is provided on the sub-template and penetrates through the lower mold to the lower forming cavity. The extending mechanism includes an arc-shaped elastic airbag and an inflation assembly. One end of the elastic airbag is connected to the bottom of the installation groove. The other end of the elastic airbag is connected to the trimming block. The inflation assembly inflates and deflates the elastic airbag. The inflation assembly includes an inflation sliding cavity, an inflation slider, a reset pressure rod, and a thrust spring. The inflation sliding cavity is vertically arranged inside the lower mold. The top end of the inflation sliding cavity communicates with the elastic airbag. The inflation slider is slidably connected inside the inflation sliding cavity. One end of the thrust spring is fixed to the bottom of the inflation sliding cavity. The other end of the thrust spring is fixed to the bottom of the inflation slider. One end of the reset pressure rod is fixed to the top of the inflation slider. The other end of the reset pressure rod extends out of the top of the inflation sliding cavity and abuts against the upper parting surface. The length of the reset pressure rod is less than the maximum sliding distance of the inflation slider."

[0004] Combined with the description content and the attached drawings of this patent document, the temperature inside the plastic injection mold is relatively high, and multiple molds cannot be stacked. When manufacturing different plastic products, the mold needs to be replaced to continue production, but replacing the mold will reduce work efficiency and different plastic products cannot be manufactured simultaneously. Content of the Utility Model

[0005] The utility model overcomes the defects in the prior art and provides a stacked structure of plastic processing and forming die body units, which can facilitate the stacking of multiple molds and achieve the effect of manufacturing different plastic products simultaneously.

[0006] To solve the above technical problems, the present utility model is achieved through the following technical solutions:

[0007] A stacked structure of plastic processing and molding die body units, comprising a first die, a second die, a third die, and a fourth die. The first die, the second die, the third die, and the fourth die are arranged and stacked in sequence. A first plastic flow channel is formed between the first die and the second die, a second plastic flow channel is formed between the third die and the fourth die, and a cooling isolation area is formed between the second die and the third die.

[0008] Furthermore, the cooling isolation area is composed of a first cooling medium flow position on the lower surface of the second die and a second cooling medium flow position on the upper surface of the third die, and the first cooling medium flow position corresponds to the second cooling medium flow position.

[0009] Furthermore, the first cooling medium flow position includes a plurality of first concentric circular grooves. A plurality of first air inlet grooves are distributed in the first concentric circular grooves. A first air outlet groove is arranged between adjacent first air inlet grooves. A first detection groove is arranged between the first air inlet groove and the first air outlet groove. The first concentric circular groove, the first air inlet groove, the first detection groove, and the first air outlet groove are connected and communicated; the second cooling medium flow position includes a plurality of second concentric circular grooves. A plurality of second air inlet grooves are distributed in the second concentric circular grooves. A second air outlet groove is arranged between adjacent second air inlet grooves. A second detection groove is arranged between the second air inlet groove and the second air outlet groove. The second concentric circular groove, the second air inlet groove, the second air outlet groove, and the second detection groove are connected and communicated.

[0010] Furthermore, the first concentric circular groove corresponds to the second concentric circular groove, the first air inlet groove corresponds to the second air inlet groove, the first air outlet groove corresponds to the second air outlet groove, and the first detection groove corresponds to the second detection groove.

[0011] Furthermore, the first plastic flow channel is composed of a first flow channel groove on the lower surface of the first die and a second flow channel groove on the upper surface of the second die. The first flow channel groove corresponds to the second flow channel groove, and a first insertion interface is connected to the ends of the first flow channel groove and the second flow channel groove.

[0012] Furthermore, the second plastic flow channel is composed of a third flow channel groove on the lower surface of the third die and a fourth flow channel groove on the upper surface of the fourth die. The third flow channel groove corresponds to the fourth flow channel groove, and a second insertion interface is connected to the ends of the third flow channel groove and the fourth flow channel groove.

[0013] Furthermore, a first concave position is arranged below the second die, a second concave position is arranged above the fourth die, and the third die passes through the first die and the second die in sequence and is arranged between the first concave position and the second concave position.

[0014] Further, the cooling isolation area is composed of a fourth cooling medium flow-through position formed by the lower surface of the second mold and the lower surface of the first concave position, and a third cooling medium flow-through position formed by the upper surface of the third mold and the upper surface of the fourth mold, and the fourth cooling medium flow-through position corresponds to the third cooling medium flow-through position.

[0015] Further, the fourth cooling medium flow-through position includes a plurality of third concentric ring grooves, a plurality of third air inlet grooves are distributed in the third concentric ring grooves, a third air outlet groove is arranged between adjacent third air inlet grooves, a third detection groove is arranged between the third air inlet groove and the third air outlet groove, and the third concentric ring groove, the third air inlet groove, the third air outlet groove and the third detection groove are communicated; the third cooling medium flow-through position includes a plurality of fourth concentric ring grooves, a plurality of fourth air inlet grooves are distributed in the fourth concentric ring grooves, a fourth air outlet groove is arranged between adjacent fourth air inlet grooves, a fourth detection groove is arranged between the fourth air inlet groove and the fourth air outlet groove, and the fourth concentric ring groove, the fourth air inlet groove, the fourth air outlet groove and the fourth detection groove are communicated.

[0016] Further, the third concentric ring groove corresponds to the fourth concentric ring groove, the third air inlet groove corresponds to the fourth air inlet groove, the third air outlet groove corresponds to the fourth air outlet groove, and the third detection groove corresponds to the fourth detection groove.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The isolation function can be achieved through the cooling isolation area, thereby avoiding the temperature intercommunication between the first plastic runner and the second plastic runner, preventing the plastic from deteriorating, improving the processing smoothness and product quality, and this structure is convenient for stacking multiple molds to achieve the effect of simultaneously manufacturing different plastic products, reducing the floor area of the molds and effectively improving the work efficiency. Description of the Drawings

[0019] The drawings are used to provide a further understanding of the present utility model, and are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0020] Figure 1 is the overall view of the stacked structure of the plastic processing and molding die body unit in the first embodiment of the present utility model;

[0021] Figure 2 is the sectional view of the stacked structure of the plastic processing and molding die body unit in the first embodiment of the present utility model;

[0022] Figure 3 is the separated top view of the stacked structure of the plastic processing and molding die body unit in the first embodiment of the present utility model;

[0023] Figure 4 It is the separated bottom view of the stacked structure of the plastic processing and molding die body unit in the first embodiment of the present utility model;

[0024] Figure 5 It is the schematic diagram of the first mold in the first embodiment of the present utility model;

[0025] Figure 6 It is the schematic diagram of the second mold in the first embodiment of the present utility model;

[0026] Figure 7 It is the schematic diagram of the first cooling medium flow position in the first embodiment of the present utility model;

[0027] Figure 8 It is the schematic diagram of the second cooling medium flow position in the first embodiment of the present utility model;

[0028] Figure 9 It is the overall view of the stacked structure of the plastic processing and molding die body unit in the second embodiment of the present utility model;

[0029] Figure 10 It is the cross-sectional view of the stacked structure of the plastic processing and molding die body unit in the second embodiment of the present utility model;

[0030] Figure 11 It is the separated top view of the stacked structure of the plastic processing and molding die body unit in the second embodiment of the present utility model;

[0031] Figure 12 It is the separated bottom view of the stacked structure of the plastic processing and molding die body unit in the second embodiment of the present utility model;

[0032] Figure 13 It is the schematic diagram of the second mold in the second embodiment of the present utility model;

[0033] Figure 14 It is the schematic diagram of the fourth mold in the second embodiment of the present utility model

[0034] Figure 15 It is the schematic diagram of the third mold and the fourth mold in the second embodiment of the present utility model.

[0035] In the figure: 1 - First mold, 101 - First runner groove, 2 - Second mold, 201 - First cooling medium flow position, 2011 - First concentric ring groove, 2012 - First air inlet groove, 2013 - First detection groove, 2014 - First air outlet groove, 202 - Second runner groove, 203 - First concave position, 204 - Fourth cooling medium flow position, 2041 - Third concentric ring groove, 2042 - Third air inlet groove, 2043 - Third air outlet groove, 2044 - Third detection groove, 3 - Third mold, 301 - Second cooling medium flow position, 3011 - Second concentric ring groove, 3012 - Second air inlet groove, 3013 - Second detection groove, 3014 - Second air outlet groove, 302 - Third runner groove, 303 - Third cooling medium flow position, 3031 - Fourth concentric ring groove, 3032 - Fourth air inlet groove, 3033 - Fourth air outlet groove, 3034 - Fourth detection groove, 4 - Fourth mold, 401 - Fourth runner groove, 402 - Second concave position, 5 - First socket, 6 - Second socket. Detailed implementation mode

[0036] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model. Embodiment 1

[0037] As Figures 1 to 4 shown, a stacked structure of a plastic processing and molding die body unit includes a first mold 1, a second mold 2, a third mold 3, and a fourth mold 4. The first mold 1, the second mold 2, the third mold 3, and the fourth mold 4 are arranged and stacked in sequence. A first plastic runner is formed between the first mold 1 and the second mold 2, a second plastic runner is formed between the third mold 3 and the fourth mold 4, and a cooling isolation area is formed between the second mold 2 and the third mold 3. The cooling isolation area plays an isolation role to avoid the temperature interaction between the first plastic runner and the second plastic runner, prevent the plastic from deteriorating, thereby improving the processing smoothness and product quality. And this structure can facilitate the stacking of multiple molds, achieve the effect of simultaneously manufacturing different plastic products, reduce the floor area of the molds, and effectively improve the working efficiency.

[0038] Specifically, as Figures 1 to 6 shown, the first plastic runner is composed of the first runner groove 101 on the lower surface of the first mold 1 and the second runner groove 202 on the upper surface of the second mold 2. The first runner groove 101 corresponds to the second runner groove 202. The ends of the first runner groove 101 and the second runner groove 202 are connected with a first socket 5. The first socket 5 facilitates the insertion of an external pipe, so that the fluid injection liquid enters the first plastic runner from the first socket 5, solidifies after cooling, and a plastic product is completed.

[0039] The second plastic runner is composed of a third runner groove 302 on the lower surface of the third mold 3 and a fourth runner groove 401 on the upper surface of the fourth mold 4. The third runner groove 302 corresponds to the fourth runner groove 401. A second insertion port 6 is connected to the ends of the third runner groove 302 and the fourth runner groove 401. The second insertion port 6 facilitates the insertion of an external pipe body, so that the fluid injection liquid enters the second plastic runner from the second insertion port 6, and after cooling, it solidifies and forms, completing the production of the second plastic product.

[0040] As Figures 7 to 8 shown, the cooling isolation area is composed of a first cooling medium circulation position 201 on the lower surface of the second mold 2 and a second cooling medium circulation position 301 on the upper surface of the third mold 3. The first cooling medium circulation position 201 corresponds to the second cooling medium circulation position 301. The first cooling medium circulation position 201 includes a plurality of first concentric ring grooves 2011. A plurality of first air inlet grooves 2012 are distributed in the first concentric ring grooves 2011. A first air outlet groove 2014 is arranged between adjacent first air inlet grooves 2012. A first detection groove 2013 is arranged between the first air inlet groove 2012 and the first air outlet groove 2014. The first concentric ring groove 2011, the first air inlet groove 2012, the first detection groove 2013 and the first air outlet groove 2014 are connected and communicated; the second cooling medium circulation position 301 includes a plurality of second concentric ring grooves 3011. A plurality of second air inlet grooves 3012 are distributed in the second concentric ring grooves 3011. A second air outlet groove 3014 is arranged between adjacent second air inlet grooves 3012. A second detection groove 3013 is arranged between the second air inlet groove 3012 and the second air outlet groove 3014. The second concentric ring groove 3011, the second air inlet groove 3012, the second air outlet groove 3014 and the second detection groove 3013 are connected and communicated. The first concentric ring groove 2011 corresponds to the second concentric ring groove 3011, the first air inlet groove 2012 corresponds to the second air inlet groove 3012, the first air outlet groove 2014 corresponds to the second air outlet groove 3014, and the first detection groove 2013 corresponds to the second detection groove 3013.

[0041] After the cooling medium enters from the channel formed between the first air inlet groove 2012 and the second air inlet groove 3012, it will immediately enter the channel formed between the first concentric ring groove 2011 and the second concentric ring groove 3011, so as to increase the cooling area, dissipate heat from the lower surface of the second mold 2 and the upper surface of the third mold 3, avoid the temperature generated by the first plastic runner and the second plastic runner from communicating with each other, and prevent the plastic from deteriorating. After the heat dissipation is completed, finally, it flows out from the channel formed between the first air outlet groove 2014 and the second air outlet groove 3014. The channel formed by the first detection groove 2013 and the second detection groove 3013 facilitates the insertion of external components to detect the temperature inside the mold.

[0042] Working principle: This embodiment is a planar stacked structure. When fluid injection liquids at different temperatures are injected into the first plastic runner and the second plastic runner, to prevent heat conduction between the second mold 2 and the third mold 3 from affecting the temperature in the first plastic runner or the second plastic runner, an external cooling medium can be introduced into this cooling isolation area at this time to reduce the temperature between the second mold 2 and the third mold 3, thereby reducing the conduction temperature and avoiding affecting the plastic in the first plastic runner or the second plastic runner from deteriorating due to excessive temperature, and further improving the processing smoothness and product quality. Embodiment Two

[0043] As Figures 9 to 15 shown, this embodiment is an improvement based on Embodiment One. The improvement of this embodiment lies in:

[0044] A first recess 203 is provided below the second mold 2, and a second recess 402 is provided above the fourth mold 4. The third mold 3 passes through the first mold 1 and the second mold 2 in sequence and is arranged between the first recess 203 and the second recess 402. The cooling isolation area is composed of a fourth cooling medium flow-through position 204 formed by the lower surface of the second mold 2 and the lower surface of the first recess 203, and a third cooling medium flow-through position 303 formed by the upper surface of the third mold 3 and the upper surface of the fourth mold 4. The fourth cooling medium flow-through position 204 corresponds to the third cooling medium flow-through position 303. The fourth cooling medium flow-through position 204 includes a number of third concentric ring grooves 2041. A number of third air inlet grooves 2042 are distributed in the third concentric ring grooves 2041. A third air outlet groove 2043 is provided between adjacent third air inlet grooves 2042. A third detection groove 2044 is provided between the third air inlet groove 2042 and the third air outlet groove 2043. The third concentric ring grooves 2041, the third air inlet grooves 2042, the third air outlet grooves 2043, and the third detection grooves 2044 are connected and communicated. The third cooling medium flow-through position 303 includes a number of fourth concentric ring grooves 3031. A number of fourth air inlet grooves 3032 are distributed in the fourth concentric ring grooves 3031. A fourth air outlet groove 3033 is provided between adjacent fourth air inlet grooves 3032. A fourth detection groove 3034 is provided between the fourth air inlet groove 3032 and the fourth air outlet groove 3033. The fourth concentric ring grooves 3031, the fourth air inlet grooves 3032, the fourth air outlet grooves 3033, and the fourth detection grooves 3034 are connected and communicated. The third concentric ring grooves 2041 correspond to the fourth concentric ring grooves 3031, the third air inlet grooves 2042 correspond to the fourth air inlet grooves 3032, the third air outlet grooves 2043 correspond to the fourth air outlet grooves 3033, and the third detection grooves 2044 correspond to the fourth detection grooves 3034.

[0045] This embodiment is a conical stacking structure. Gas is injected into the channel formed between the third intake groove 2042 and the fourth intake groove 3032, and then flows into the channel formed between the third concentric circular groove 2041 and the fourth concentric circular groove 3031, thereby increasing the cooling area to dissipate heat from the lower surface of the second mold 2, the upper surface of the third mold 3, and the upper surface of the fourth mold 4. After the heat dissipation, it finally flows out from the channel formed between the third exhaust groove 2043 and the fourth exhaust groove 3033. The channel formed by the third detection groove 2044 and the fourth detection groove 3034 facilitates the insertion of external components to detect the internal temperature of the mold.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A plastic processing and molding die unit stacking structure, characterized in that: The invention comprises a first mould (1), a second mould (2), a third mould (3) and a fourth mould (4), wherein the first mould (1), the second mould (2), the third mould (3) and the fourth mould (4) are arranged and stacked in sequence, a first plastic flow channel is formed between the first mould (1) and the second mould (2), a second plastic flow channel is formed between the third mould (3) and the fourth mould (4), and a cooling isolation area is formed between the second mould (2) and the third mould (3).

2. A plastic processing and molding die unit stacking structure according to claim 1, characterized in that: The cooling isolation area is composed of a first cooling medium circulation position (201) on the lower surface of the second mold (2) and a second cooling medium circulation position (301) on the upper surface of the third mold (3), and the first cooling medium circulation position (201) corresponds to the second cooling medium circulation position (301).

3. A plastic processing and molding die unit stacking structure according to claim 2, characterized in that: The first cooling medium flow position (201) comprises a plurality of first concentric annular grooves (2011), the first concentric annular grooves (2011) are provided with a plurality of first air inlet grooves (2012) distributed therein, first air outlet grooves (2014) are provided between adjacent first air inlet grooves (2012), a first detection groove (2013) is provided between the first air inlet grooves (2012) and the first air outlet grooves (2014), and the first concentric annular grooves (2011), the first air inlet grooves (2012), the first detection grooves (2013) and the first air outlet grooves (2014) are connected. The second cooling medium flow position (301) comprises a plurality of second concentric circular grooves (3011), a plurality of second air inlet grooves (3012) are distributed in the second concentric circular grooves (3011), a second air outlet groove (3014) is arranged between adjacent second air inlet grooves (3012), a second detection groove (3013) is arranged between the second air inlet groove (3012) and the second air outlet groove (3014), and the second concentric circular grooves (3011), the second air inlet grooves (3012), the second air outlet groove (3014) and the second detection groove (3013) are connected.

4. A plastic processing and molding die unit stacking structure according to claim 3, characterized in that: The first concentric circular groove (2011) corresponds to the second concentric circular groove (3011), the first air inlet groove (2012) corresponds to the second air inlet groove (3012), the first air outlet groove (2014) corresponds to the second air outlet groove (3014), and the first detection groove (2013) corresponds to the second detection groove (3013).

5. The plastic processing and molding die unit stacking structure according to claim 1, characterized in that: The first plastic flow channel is composed of a first flow channel groove (101) on the lower surface of the first mold (1) and a second flow channel groove (202) on the upper surface of the second mold (2); the first flow channel groove (101) corresponds to the second flow channel groove (202); and the ends of the first flow channel groove (101) and the second flow channel groove (202) are connected with a first plug interface (5).

6. The plastic processing and molding die unit stacking structure according to claim 1, characterized in that: The second plastic flow channel is composed of a third flow channel groove (302) on the lower surface of the third mold (3) and a fourth flow channel groove (401) on the upper surface of the fourth mold (4); the third flow channel groove (302) corresponds to the fourth flow channel groove (401); and the ends of the third flow channel groove (302) and the fourth flow channel groove (401) are connected to a second plug interface (6).

7. The plastic processing and molding die unit stacking structure according to claim 1, characterized in that: A first recess (203) is provided below the second mould (2), a second recess (402) is provided above the fourth mould (4), and the third mould (3) passes through the first mould (1) and the second mould (2) in sequence and is provided between the first recess (203) and the second recess (402).

8. The plastic processing and molding die unit stacking structure according to claim 7, characterized in that: The cooling isolation area is composed of a fourth cooling medium circulation position (204) formed by the lower surface of the second mold (2) and the lower surface of the first recess (203), and a third cooling medium circulation position (303) formed by the upper surface of the third mold (3) and the upper surface of the fourth mold (4), and the fourth cooling medium circulation position (204) corresponds to the third cooling medium circulation position (303).

9. A plastic processing and molding die unit stacking structure according to claim 8, characterized in that: The fourth cooling medium flow position (204) comprises a plurality of third concentric circular grooves (2041), a plurality of third air inlet grooves (2042) are distributed in the third concentric circular grooves (2041), a third air outlet groove (2043) is arranged between adjacent third air inlet grooves (2042), a third detection groove (2044) is arranged between the third air inlet grooves (2042) and the third air outlet grooves (2043), and the third concentric circular grooves (2041), the third air inlet grooves (2042), the third air outlet grooves (2043) and the third detection grooves (2044) are connected. The third cooling medium flow position (303) comprises a plurality of fourth concentric circular grooves (3031), a plurality of fourth air inlet grooves (3032) are distributed in the fourth concentric circular grooves (3031), a fourth air outlet groove (3033) is arranged between adjacent fourth air inlet grooves (3032), a fourth detection groove (3034) is arranged between the fourth air inlet groove (3032) and the fourth air outlet groove (3033), and the fourth concentric circular groove (3031), the fourth air inlet groove (3032), the fourth air outlet groove (3033) and the fourth detection groove (3034) are connected.

10. The plastic processing and molding die unit stacking structure according to claim 9, characterized in that: The third concentric annular groove (2041) corresponds to the fourth concentric annular groove (3031), the third air inlet groove (2042) corresponds to the fourth air inlet groove (3032), the third air outlet groove (2043) corresponds to the fourth air outlet groove (3033), and the third detection groove (2044) corresponds to the fourth detection groove (3034).

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