Nitrogen charging and exhausting mold cover structure

Abstract

The utility model relates to the technical field of molding presses, in particular to a nitrogen charging and exhausting mold cover structure which comprises a supporting base used for containing a blank, a mold cover and a mold driving structure used for driving the mold cover, and the mold driving structure is oppositely arranged above the supporting base; the mold cover is connected to the mold driving structure, is driven by the mold driving structure and abuts against the supporting base to form a sealed containing cavity used for sealing a blank piece; the supporting base and the mold driving structure are provided with a first gas port set and a second gas port set correspondingly, and the first gas port set and the second gas port set communicate with the sealed containing cavity to conduct nitrogen filling or oxygen discharging so as to ensure that the interior of the sealed containing cavity can be in an oxygen-free state. According to the scheme, the structural design of nitrogen deoxygenation is adopted, and the effects of improving the accuracy of mold pressing finished products, enhancing the adaptability of the mold cover structure and prolonging the service life of the mold cover structure are achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of molding machines, and particularly relates to a mold cover structure for nitrogen filling and venting. Background Technology

[0002] Materials are prone to reacting with oxygen under high temperatures or specific chemical environments, leading to oxidation. During the molding process, molds and blank materials are easily oxidized at high temperatures, which in turn affects product quality and mold lifespan.

[0003] The existing mold cover uses a deoxygenation method of first evacuating the vacuum and then filling it with nitrogen. However, this method is prone to causing the blank inside the mold to jump under the influence of airflow, resulting in eccentricity and unevenness of the molded product, which affects the final quality of the molded product. Therefore, this utility model proposes a new solution to the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a nitrogen-filled and vented mold cover structure. By adopting a nitrogen deoxygenation structure design, the accuracy of the molded product is improved, the adaptability of the mold cover structure is enhanced, and the service life of the mold cover structure is extended.

[0005] Based on this, the present invention provides a nitrogen-filled and vented mold cover structure, comprising:

[0006] A support base for placing a blank, a mold cover, and a mold drive structure for driving the mold cover are provided opposite to the support base. The mold cover is connected to the mold drive structure and is driven by the mold drive structure to abut against the support base to form a sealed placement cavity for sealing the blank.

[0007] The support base and the mold driving structure are respectively provided with a first air port group and a second air port group. The first air port group and the second air port group are respectively connected to the sealed placement cavity for nitrogen filling or oxygen discharge to ensure that the sealed placement cavity is in an oxygen-free state.

[0008] The present invention provides a nitrogen-filled and vented mold cover structure, which also includes an exhaust check valve for venting. The exhaust check valve can be connected to the first air port group or the second air port group for venting.

[0009] As described above, a nitrogen-filled and vented mold cover structure is provided, wherein the mold drive structure is further provided with a drive structure support plate for stabilizing the mold drive structure and a mold cover drive cylinder for driving the mold cover; the mold cover drive cylinder is connected to the drive structure support plate and is connected to the mold cover for driving.

[0010] As described above, in a nitrogen-filled and vented mold cover structure, the mold drive structure is further provided with a first air pipe mounting part and a second air pipe mounting part for mounting a second air port group. The second air port group is provided with a first mold cover guide rod and a second mold cover guide rod. The first mold cover guide rod and the second mold cover guide rod are slidably connected to the first air pipe mounting part and the second air pipe mounting part, respectively, and extend into the sealed placement cavity to cooperate with the mold cover drive cylinder to drive the mold cover to move.

[0011] As described above, in a nitrogen-filled and vented mold cover structure, the first mold cover guide rod and the second mold cover guide rod are hollow and connected to the sealed placement cavity. The first mold cover guide rod and the second mold cover guide rod are provided with a first air inlet and a second air inlet. The first air inlet and the second air inlet are respectively connected to the first mold cover guide rod and the second mold cover guide rod, and seal the first mold cover guide rod and the second mold cover guide rod.

[0012] The present invention provides a nitrogen-filled and vented mold cover structure, which further includes a mold cover floating joint for adjusting the mold cover drive cylinder. One end of the mold cover floating joint is connected to the mold cover drive cylinder, and the other end is connected to the mold cover.

[0013] As described above, in a nitrogen-filled and vented mold cover structure, the supporting base is provided with a base support plate for the mold cover to abut against, the first air port group is connected to the base support plate, and the first air port group communicates with the sealed placement cavity for filling or venting.

[0014] As described above, in a nitrogen-filled and vented mold cover structure, the first air inlet group is provided with a third air inlet, a fourth air inlet, a fifth air inlet, and a sixth air inlet. The third and fourth air inlets are located opposite each other on one side of the base support plate, and the fifth and sixth air inlets are located opposite the third and fourth air inlets on the other side of the base support plate for filling or venting.

[0015] As described above, in a nitrogen-filled and vented mold cover structure, the base support plate is provided with a first base support plate connecting channel and a second base support plate connecting channel for connecting the sealed placement cavity. The third and fourth air inlets are connected to the sealed placement cavity through the first base support plate connecting channel, and the fourth, fifth, and sixth air inlets are connected to the sealed placement cavity through the second base support plate connecting channel.

[0016] As described above, in a nitrogen-filled and vented mold cover structure, at least one of the first, second, third, fourth, fifth, and sixth air inlets is an air inlet and one is an exhaust outlet.

[0017] Implementing the embodiments of this utility model has the following beneficial effects:

[0018] 1. This solution adopts a nitrogen deoxygenation structure design. The mold drive structure drives the mold cover to abut against the support base to form a sealed placement cavity. The support base and the mold drive structure are respectively equipped with a first air port group and a second air port group. The first air port group and the second air port group are connected to the sealed placement cavity. Nitrogen is filled and oxygen is discharged through the first air port group and the second air port group located at different positions. When the nitrogen filling reaches a certain amount, the oxygen is discharged. This ensures that the gas pressure in the sealed placement cavity remains stable during the oxygen discharge process. The optimized structural setting eliminates the need for a vacuum pump, thereby avoiding the blank part from jumping during the process of forming an oxygen-free state. This achieves the effects of improving the accuracy of the molded product, enhancing the adaptability of the mold cover structure, and extending the service life of the mold cover structure. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an exploded view of a portion of the structure of an embodiment of this utility model;

[0021] Figure 2 For the corresponding Figure 1 A structural diagram from another direction;

[0022] Figure 3 For the corresponding Figure 2 A structural diagram from another direction;

[0023] Figure 4 This is a partial structural cross-sectional view of an embodiment of the present utility model;

[0024] Figure 5 For the corresponding Figure 4 Enlarged view of the A-section structure;

[0025] Figure 6 For the corresponding Figure 4 Enlarged view of the structure of part B.

[0026] In the diagram: 1-Support base, 111-Third air inlet, 112-Fourth air inlet, 113-Fifth air inlet, 114-Sixth air inlet, 12-Base support plate, 121-First base support plate connecting channel, 122-Second base support plate connecting channel; 2-Mold cover, 21-Mold cover mounting groove, 22-Mold cover sealing ring; 311-First mold cover guide rod, 3111-First air inlet, 312-Second mold cover guide rod, 3121-Second air inlet, 32-Drive structure support plate, 33-Mold cover drive cylinder, 34-First air pipe mounting part, 35-Second air pipe mounting part; 4-Sealed placement cavity; 5-Exhaust check valve; 6-Mold cover floating joint; 7-Blank part. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1 to 6 As shown, this utility model embodiment provides a nitrogen-filled and vented mold cover structure, including:

[0029] A support base 1 for placing the blank, a mold cover 2, and a mold drive structure for driving the mold cover 2 are provided, with the mold drive structure positioned above the support base 1. The mold cover 2 is connected to the mold drive structure and is driven by the mold drive structure to abut against the support base 1 to form a sealed placement cavity 4 for sealing the blank. The support base 1 and the mold drive structure are respectively provided with a first air port group and a second air port group. The first air port group and the second air port group are respectively connected to the sealed placement cavity 4 for nitrogen filling or oxygen discharge to ensure that the sealed placement cavity 4 is in an oxygen-free state.

[0030] This utility model provides a nitrogen-filled and vented mold cover structure, which also includes an exhaust check valve 5 for venting. The exhaust check valve 5 can be connected to the first or second air port group for venting. In this utility model embodiment, the exhaust check valve 5 is preferably a high-precision one-way check valve with a starting pressure difference of 0.005MPa. The high-precision one-way check valve can be connected to the first or second air port group to discharge oxygen from the sealed placement cavity 4 and ensure that external air does not flow back into the sealed placement cavity 4, thereby accelerating the oxygen discharge rate, reducing the time for the sealed placement cavity 4 to enter an oxygen-free state, and improving production efficiency.

[0031] Furthermore, the mold driving structure also includes a drive structure support plate 32 for stabilizing the mold driving structure, a mold cover driving cylinder 33 for driving the mold cover 2, and a pneumatic control system for controlling the mold cover driving cylinder 33. The mold cover driving cylinder 33 is connected to the drive structure support plate 32 and is connected to the pneumatic control system. The pneumatic control system controls the extension and retraction of the mold cover driving cylinder 33, thereby driving the mold cover 2 to move relatively closer to or relatively away from the support base 1, so as to seal the blank within the support base 1. The mold cover 2 is sealed within the cavity 4. It is equipped with a mold cover mounting groove 21 and a mold cover sealing ring 22. The mold cover sealing ring 22 is connected within the mold cover mounting groove 21 to enhance the sealing of the mold cover 2 connection and ensure the quality of the molded product. The mold cover mounting groove 21 has a U-shaped design with a small opening and a large inner cavity, allowing the mold cover sealing ring 22 to be snapped into the groove, improving the ease of installation and replacement, and enhancing the convenience of maintenance of the mold cover 2.

[0032] Furthermore, the mold drive structure also includes a first air pipe mounting part 34 and a second air pipe mounting part 35 for mounting the second air port assembly. The first air pipe mounting part 34 and the second air pipe mounting part 35 are respectively fixedly connected to the drive structure support plate 32 to improve the stability of the connection. The second air port assembly includes a first mold cover guide rod 311 and a second mold cover guide rod 312. The first mold cover guide rod 311 and the second mold cover guide rod 312 are respectively slidably connected to the first air pipe mounting part 34 and the second air pipe mounting part 35, and extend into the sealed placement cavity 4 for fastening to cooperate with the mold cover drive cylinder 3. 3. The mold cover 2 is moved by the air pipe mounting part 34 and the second air pipe mounting part 35. The first air pipe mounting part 34 and the second air pipe mounting part 35 are preferably designed with linear bearings to ensure that the first mold cover guide rod 311 and the second mold cover guide rod 312 are slidably connected to the first air pipe mounting part 34 and the second air pipe mounting part 35. The linear bearings provide high-precision positioning and reduce wear between the guide rod and the bearing, thereby extending the service life of the entire mold cover structure. The first air pipe mounting part 34 and the second air pipe mounting part 35 are preferably designed diagonally to ensure that the mold cover 2 can be horizontally abutted against the support base 1 to enhance the sealing of the mold cover 2.

[0033] Furthermore, the first mold cover guide rod 311 and the second mold cover guide rod 312 are hollow and connected to the sealed placement cavity 4. The first mold cover guide rod 311 and the second mold cover guide rod 312 are provided with a first air inlet 3111 and a second air inlet 3121, respectively. The first air inlet 3111 and the second air inlet 3121 are respectively connected to the first mold cover guide rod 311 and the second mold cover guide rod 312, and seal the first mold cover guide rod 311 and the second mold cover guide rod 312 to ensure... The sealed placement cavity 4 is always kept in a sealed state. The first mold cover guide rod 311 and the second mold cover guide rod 312 adopt a double-layer structure design, wherein the outer layer is made of metal material and the inner layer is made of high-pressure resistant flexible material to improve the pressure resistance and airtightness of the first mold cover guide rod 311 and the second mold cover guide rod 312, and ensure the vacuum effect of the sealed placement cavity 4. The first air inlet 3111 and the second air inlet 3121 are in a closed state when not connected to the air pipe to ensure that the sealed placement cavity 4 is always kept in a sealed state.

[0034] Furthermore, the nitrogen-filled and vented mold cover structure provided in this embodiment of the present invention also includes a mold cover floating joint 6 for adjusting the mold cover drive cylinder 33. One end of the mold cover floating joint 6 is connected to the mold cover drive cylinder 33, and the other end is connected to the mold cover 2, so as to improve the flexibility and adaptability of the mold cover drive cylinder 33 in the use of the mold cover structure. The mold cover floating joint 6 includes a floating joint rotating connection structure, which allows the mold cover 2 to be freely adjusted in multiple angle ranges, so that the mold cover drive cylinder 33 can be correctly aligned with the mold cover 2, thereby reducing stress concentration and extending the service life of the mold cover drive cylinder 33 and the mold cover 2.

[0035] Furthermore, the support base 1 is provided with a base support plate 12 for the mold cover 2 to abut against. The first air port group is connected to the base support plate 12 and communicates with the sealed placement cavity 4 for inflation or deflation. The base support plate 12 adopts an anti-slip design, and a wear-resistant and anti-slip coating is applied to the surface of the support base 1 in contact with the mold cover 2 to increase the friction between the support base 1 and the mold cover 2, prevent the mold cover 2 from sliding during operation, and improve the sealing and stability of the mold cover 2.

[0036] Furthermore, the first air inlet group is provided with a third air inlet 111, a fourth air inlet 112, a fifth air inlet 113, and a sixth air inlet 114. When not connected to an air pipe, the third air inlet 111, fourth air inlet 112, fifth air inlet 113, and sixth air inlet 114 are in a sealed state to ensure that the sealed placement cavity 4 is always in a sealed state. The third air inlet 111 and fourth air inlet 112 are positioned opposite each other on one side of the base support plate 12, and the fifth air inlet 113 and sixth air inlet 114 are positioned opposite each other. The third air inlet 111 and the fourth air inlet 112 are located on the other side of the base support plate 12, so as to enable the selection of different air inlet positions for inflation or deflation according to the needs of different blanks, thereby improving the flexibility of air inlet selection and improving the precision of the molded product. The third air inlet 111 and the fourth air inlet 112 are straight air inlet designs, while the fifth air inlet 113 and the sixth air inlet 114 are curved air inlet designs. The combination of straight and curved air inlet designs effectively improves the applicability of the mold cover structure in different situations.

[0037] Furthermore, the base support plate 12 is provided with a first base support plate connecting channel 121 and a second base support plate connecting channel 122 for connecting the sealed placement cavity 4. The third air inlet 111 and the fourth air inlet 112 are connected to the sealed placement cavity 4 through the first base support plate connecting channel 121, and the fourth air inlet 112, the fifth air inlet 113, and the sixth air inlet 114 are connected to the sealed placement cavity 4 through the second base support plate connecting channel 122. The inner surfaces of the first base support plate connecting channel 121 and the second base support plate connecting channel 122 are coated with an anti-corrosion coating to ensure that they are not easily corroded during long-term use, thereby ensuring that the first base support plate connecting channel 121 and the second base support plate connecting channel 122 maintain stable and efficient operation for a long time.

[0038] Furthermore, the exhaust check valve 5 can be connected to the first air inlet 3111, the second air inlet 3121, the third air inlet 111, the fourth air inlet 112, the fifth air inlet 113, and the sixth air inlet 114 to improve the convenience of connection and sealing. At least one air inlet and one exhaust outlet are provided in the first air inlet 3111, the second air inlet 3121, the third air inlet 111, the fourth air inlet 112, the fifth air inlet 113, and the sixth air inlet 114, so as to improve the oxygen removal efficiency by combining different numbers of air inlets and exhaust outlets, enhance the applicability of the mold cover structure, and thus improve production efficiency.

[0039] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A nitrogen-purged vented mold cover structure, characterized by, Comprise: Supporting base (1) for placing blank (7), mold cover (2), mold driving structure for driving the mold cover (2), the mold driving structure is relatively provided above the supporting base (1); The mold cover (2) is connected on the mold driving structure, and the mold cover (2) is driven by the mold driving structure and abuts on the supporting base (1) to form a sealed placement cavity (4) for sealing blank; The supporting base (1), mold driving structure is respectively provided with first gas port group, second gas port group, the first gas port group, second gas port group is respectively communicated with the sealed placement cavity (4) to carry out nitrogen filling or oxygen discharge, to ensure that the sealed placement cavity (4) is in anaerobic state.

2. A nitrogen-purged vented mold cover structure according to claim 1, wherein It also includes an exhaust check valve (5) for exhaust, the exhaust check valve (5) can be connected on the first gas port group or second gas port group to exhaust.

3. A nitrogen-purged vented mold cover structure according to claim 1, wherein The mold driving structure is also provided with a driving structure support plate (32) for stabilizing the mold driving structure, a mold cover driving cylinder (33) for driving the mold cover (2); The mold cover driving cylinder (33) is connected on the driving structure support plate (32), and is connected with the mold cover (2) to drive.

4. A nitrogen-purged vented mold cover structure according to claim 3, wherein The mold driving structure is also provided with a first gas pipe mounting portion (34) and a second gas pipe mounting portion (35) for mounting the second gas port group, and the second gas port group is provided with a first mold cover guide rod (311) and a second mold cover guide rod (312); The first mold cover guide rod (311) and the second mold cover guide rod (312) are respectively slidably connected to the first gas pipe mounting portion (34) and the second gas pipe mounting portion (35), and extend into the sealed placement cavity (4) to cooperate with the mold cover driving cylinder (33) to drive the mold cover (2) to move.

5. A nitrogen-purged vented mold cover structure according to claim 4, wherein The first mold cover guide rod (311) and the second mold cover guide rod (312) are hollow and communicate with the sealed placement cavity (4), and the first mold cover guide rod (311) and the second mold cover guide rod (312) are provided with a first air inlet (3111) and a second air inlet (3121); The first air inlet (3111) and the second air inlet (3121) are respectively connected to the first mold cover guide rod (311) and the second mold cover guide rod (312), and seal the first mold cover guide rod (311) and the second mold cover guide rod (312).

6. A nitrogen-purged vented mold cover structure according to claim 3, wherein It also includes a mold cover floating joint (6) for adjusting the mold cover driving cylinder (33), one end of the mold cover floating joint (6) is connected to the mold cover driving cylinder (33), and the other end is connected to the mold cover (2).

7. A nitrogen-purged vented mold cover structure according to claim 5, wherein The supporting base (1) is provided with a base support plate (12) for abutting the mold cover (2), the first gas port group is connected to the base support plate (12), and the first gas port group communicates with the sealed placement cavity (4) to inflate or exhaust.

8. A nitrogen-purged vented mold cover structure according to claim 7, wherein The first air port group is provided with a third air inlet (111), a fourth air inlet (112), a fifth air inlet (113) and a sixth air inlet (114). The third air inlet (111) and the fourth air inlet (112) are oppositely arranged on one side of the base support plate (12). The fifth air inlet (113) and the sixth air inlet (114) are oppositely arranged on the other side of the base support plate (12) relative to the third air inlet (111) and the fourth air inlet (112) for air charging or air exhausting.

9. A nitrogen-purged vented mold cover structure according to claim 8, wherein The base support plate (12) is provided with a first base support plate connecting channel (121) and a second base support plate connecting channel (122) for connecting the sealed placement cavity (4). The third air inlet (111) and the fourth air inlet (112) are connected with the sealed placement cavity (4) through the first base support plate connecting channel (121). The fourth air inlet (112), the fifth air inlet (113) and the sixth air inlet (114) are connected with the sealed placement cavity (4) through the second base support plate connecting channel (122).

10. A nitrogen-purged vented mold cover structure according to claim 8, wherein At least one air charging port and one air exhausting port are arranged in the first air inlet (3111), the second air inlet (3121), the third air inlet (111), the fourth air inlet (112), the fifth air inlet (113) and the sixth air inlet (114).

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