Multi-station forming die for small-caliber rupture disk

Abstract

The multi-station forming die comprises a lower die, an upper die, a guide mechanism, a positioning mechanism and a forming mechanism, the upper die is arranged above the lower die, the guide mechanism is arranged between the lower die and the upper die, the positioning mechanism is installed on the top of the lower die, and the forming mechanism is installed on the lower die. A forming mechanism is mounted in the lower mold; according to the utility model, a plurality of positioning areas are arranged in the lower die cavity, so that a plurality of rupture disks can be formed once by the die, and the production efficiency is improved; under the matched guiding action of the first guide column, the first guide sleeve, the second guide column and the second guide sleeve, dislocation in the mold closing process of the upper mold and the lower mold is effectively prevented, the mold closing accuracy of the upper mold and the lower mold is guaranteed, the forming quality of the rupture disk is improved, and meanwhile through the cooperation of the second guide column, the second guide sleeve and the spring, the rupture disk is prevented from being dislocated. And the downward movement of the upper die can be buffered, so that a buffering effect is achieved, and the die is effectively prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of bursting disc production, in particular to a multi-station forming die for small-caliber bursting discs. Background Art

[0002] A bursting disc, also known as an explosion-proof disc or explosion-proof membrane, can burst at specified temperature and pressure to release the pressure in the container. A bursting disc usually consists of a bursting disc body and a clamping part. The bursting disc body is a component that can burst and relieve pressure at the calibrated bursting pressure and temperature, while the clamp is an auxiliary component that is installed and clamped at the appropriate part of the container. The bursting disc has a simple structure, sensitive and accurate response, and will not leak under normal pressure. It can work reliably in viscous, high temperature, low temperature, corrosive and other environments. It is an ideal safety device for high-pressure containers and is widely used in various industrial fields.

[0003] At present, rupture discs are usually made of stainless steel to form flat rupture discs or arch rupture discs. Arch rupture discs are divided into positive arch rupture discs and reverse arch rupture discs. Arch rupture discs are usually processed by pressing with a forming mold. However, the existing forming mold generally has only one cavity and can only process one finished product at a time, resulting in low processing efficiency. In view of the above defects, it is necessary to design a multi-station forming mold for small-caliber rupture discs. Utility Model Content

[0004] The utility model aims to provide a multi-station forming die for small-caliber bursting discs to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-station molding die for small-caliber bursting discs, comprising a lower mold, an upper mold, a guiding mechanism, a positioning mechanism and a molding mechanism, wherein an upper mold is arranged above the lower mold, a guiding mechanism is arranged between the lower mold and the upper mold, a positioning mechanism is installed on the top of the lower mold, and a molding mechanism is installed inside the lower mold.

[0006] Preferably, the lower mold includes a lower mold mounting plate and a lower mold, the lower mold is mounted on the top of the lower mold mounting plate, four first guide pillars are evenly arranged on the edge of the top of the lower mold, a lower mold cavity is opened in the middle of the top of the lower mold, a lower sealing groove is opened on the edge of the lower mold cavity, and a lower sealing ring is arranged in the lower sealing groove.

[0007] Preferably, the upper mold includes an upper mold mounting plate and an upper mold, the upper mold is installed on the bottom of the upper mold mounting plate, four first guide sleeves are evenly arranged on the edge of the bottom of the upper mold, an upper mold cavity is opened in the middle of the bottom of the upper mold, an upper sealing groove is opened on the edge of the upper mold cavity, and an upper sealing ring is arranged in the upper sealing groove.

[0008] Preferably, the guide mechanism includes a second guide pin, a second guide sleeve and a spring, four second guide pins are provided, and the four second guide pins are evenly arranged on the lower mold mounting plate, four second guide sleeves are provided, and the four second guide sleeves are evenly arranged on the upper mold mounting plate, the second guide sleeve is sleeved on the second guide pin, and a spring is sleeved on the second guide sleeve, one end of the spring is fixedly connected to the upper mold mounting plate, and the other end of the spring is fixedly connected to the lower mold mounting plate.

[0009] Preferably, the positioning mechanism includes two groups of positioning components arranged at intervals, each group of positioning components includes a plurality of blank positioning pins and a plurality of positioning pin holes, the plurality of positioning pin holes are evenly distributed in a circle inside the upper mold cavity, the plurality of blank positioning pins are evenly distributed in a circle inside the lower mold cavity, a positioning area is formed between three adjacent blank positioning pins, an injection hole is opened on the lower mold cavity near the center of the positioning area, and an arched groove is opened on the upper mold cavity near the center of the positioning area.

[0010] Preferably, the molding mechanism includes an air injection pipe and an exhaust pipe. The air injection pipe is arranged inside the lower mold. One end of the air injection pipe passes through the lower mold and the lower mold mounting plate in sequence and is connected to the output end of the air storage tank. The input end of the air storage tank is connected to the output end of the air compressor. The other end of the air injection pipe is respectively connected to multiple air injection branch pipes, and the air injection branch pipes are connected to the air injection holes.

[0011] Preferably, the exhaust pipe is installed inside the upper mold, an exhaust port is opened on the outer side of the upper mold, one end of the exhaust pipe is connected to the upper mold cavity, and the other end of the exhaust pipe is connected to the exhaust port.

[0012] Compared with the prior art, the utility model discloses a multi-station molding die for small-caliber bursting discs, and a plurality of positioning areas are arranged in the lower mold cavity, so that the mold can mold a plurality of bursting discs at a time, thereby improving production efficiency; the utility model discloses an effective method of preventing dislocation of the upper mold and the lower mold during the mold closing process under the cooperative guiding action of the first guide column, the first guide sleeve, the second guide column and the second guide sleeve, thereby ensuring the mold closing accuracy of the upper mold and the lower mold, and improving the molding quality of the bursting disc; at the same time, through the cooperation of the second guide column, the second guide sleeve and the spring, the downward movement of the upper mold can be buffered, thereby playing a buffering role and effectively avoiding damage to the mold itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the lower mold in the utility model;

[0016] Figure 3 It is a schematic diagram of the internal structure of the upper mold in the utility model.

[0017] In the attached figure:

[0018] 1. Lower mold; 11. Lower mold mounting plate; 12. Lower mold; 13. First guide post; 14. Lower mold cavity; 15. Lower sealing groove; 16. Lower sealing ring; 2. Upper mold; 21. Upper mold mounting plate; 22. Upper mold; 23. First guide sleeve; 24. Upper mold cavity; 25. Upper sealing groove; 26. Upper sealing ring; 3. Guide mechanism; 31. Second guide post; 32. Second guide sleeve; 33. Spring; 4. Positioning mechanism; 41. Blank locating pin; 42. Positioning pin hole; 43. Positioning area; 5. Molding mechanism; 51. Gas injection pipe; 52. Exhaust pipe; 53. Gas injection branch pipe; 54. Gas injection hole; 55. Exhaust port; 56. Arched groove; 6. Bursting piece. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 As shown, the utility model provides a technical solution: a multi-station molding die for small-caliber bursting discs, comprising a lower mold 1, an upper mold 2, a guide mechanism 3, a positioning mechanism 4 and a molding mechanism 5, wherein the upper mold 2 is arranged above the lower mold 1, the guide mechanism 3 is arranged between the lower mold 1 and the upper mold 2, the positioning mechanism 4 is installed on the top of the lower mold 1, and the molding mechanism 5 is installed inside the lower mold 1.

[0021] The lower mold 1 in this embodiment includes a lower mold mounting plate 11 and a lower mold 12. The lower mold 12 is installed on the top of the lower mold mounting plate 11. Four first guide pillars 13 are evenly arranged on the edge of the top of the lower mold 12. A lower mold cavity 14 is opened in the middle of the top of the lower mold 12. A lower sealing groove 15 is opened on the edge of the lower mold cavity 14. A lower sealing ring 16 is arranged in the lower sealing groove 15.

[0022] The upper mold 2 in this embodiment includes an upper mold mounting plate 21 and an upper mold 22. The upper mold 22 is installed at the bottom of the upper mold mounting plate 21. Four first guide sleeves 23 are evenly arranged on the edge of the bottom of the upper mold 22. An upper mold cavity 24 is opened in the middle of the bottom of the upper mold 22. An upper sealing groove 25 is opened on the edge of the upper mold cavity 24. An upper sealing ring 26 is arranged in the upper sealing groove 25.

[0023] The guide mechanism 3 in this embodiment includes a second guide column 31, a second guide sleeve 32 and a spring 33. Four second guide columns 31 are provided, and the four second guide columns 31 are evenly arranged on the lower mold mounting plate 11. Four second guide sleeves 32 are provided, and the four second guide sleeves 32 are evenly arranged on the upper mold mounting plate 21. The second guide sleeve 32 is sleeved on the second guide column 31, and the second guide sleeve 32 is sleeved with a spring 33. One end of the spring 33 is fixedly connected to the upper mold mounting plate 21, and the other end of the spring 33 is fixedly connected to the lower mold mounting plate 11.

[0024] The positioning mechanism 4 in this embodiment includes two groups of positioning components arranged at intervals, each group of positioning components includes a plurality of blank positioning pins 41 and a plurality of positioning pin holes 42, the plurality of positioning pin holes 42 are evenly distributed in a circle inside the upper mold cavity 24, the plurality of blank positioning pins 41 are evenly distributed in a circle inside the lower mold cavity 14, a positioning area 43 is formed between three adjacent blank positioning pins 41, an injection hole 54 is opened on the lower mold cavity 14 near the center of the positioning area 43, and an arched groove 56 is opened on the upper mold cavity 24 near the center of the positioning area 43.

[0025] The molding mechanism 5 in this embodiment includes an air injection pipe 51 and an exhaust pipe 52. The air injection pipe 51 is arranged inside the lower mold 12. One end of the air injection pipe 51 passes through the lower mold 12 and the lower mold mounting plate 11 in sequence and is connected to the output end of the air storage tank. The input end of the air storage tank is connected to the output end of the air compressor. The other end of the air injection pipe 51 is respectively connected to a plurality of air injection branch pipes 53. The air injection branch pipes 53 are connected to the air injection holes 54. The exhaust pipe 52 is installed inside the upper mold 22. An exhaust port 55 is opened on the outer side of the upper mold 22. One end of the exhaust pipe 52 is connected to the upper mold cavity 24, and the other end of the exhaust pipe 52 is connected to the exhaust port 55.

[0026] The working principle of the utility model is as follows: the molding die is placed in a hydraulic press, and blasting disc blanks are placed in a plurality of positioning areas 43. The hydraulic press presses down the upper die mounting plate 21, driving the upper die 22 to move downward and press on the lower die 12, so that the upper die 22 and the lower die 12 are closed. Under the cooperative guiding action of the first guide column 13, the first guide sleeve 23, the second guide column 31 and the second guide sleeve 32, the upper die 22 and the lower die 12 are effectively prevented from being misaligned during the closing process, the closing accuracy of the upper die 22 and the lower die 12 is ensured, and the quality of the blasting disc molding is improved. At the same time, through the cooperation of the second guide column 31, the second guide sleeve 32 and the spring 33, the downward movement of the upper die 22 can be buffered, which plays a buffering role and effectively avoids damage to the die itself.

[0027] When the upper mold and the lower mold are closed, the sealing effect between the upper mold cavity 24 and the lower mold cavity 14 is improved through the cooperation of the upper sealing ring 26 and the lower sealing ring 16, so that the upper mold cavity 24 is connected with the lower mold cavity 14 to form a closed chamber. The air compressor works to output high-pressure air to the air storage tank. The high-pressure air output by the air storage tank is blown out from the air injection hole 54 through the air injection pipe 51 and the air injection branch pipe 53, so that the middle part of the bursting piece blank 6 in the positioning area 43 is arched upward, thereby realizing the molding of the bursting piece. After the molding is completed, the air is discharged from the chamber through the exhaust pipe 52 and the exhaust port 55.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station molding die for small-caliber bursting discs, characterized in that: The invention comprises a lower mold (1), an upper mold (2), a guide mechanism (3), a positioning mechanism (4) and a molding mechanism (5), wherein the upper mold (2) is arranged above the lower mold (1), a guide mechanism (3) is arranged between the lower mold (1) and the upper mold (2), a positioning mechanism (4) is installed on the top of the lower mold (1), and a molding mechanism (5) is installed inside the lower mold (1), wherein the lower mold (1) comprises a lower mold mounting plate (11) and a lower mold (12), the lower mold (12) is installed on the top of the lower mold mounting plate (11), four first guide pillars (13) are evenly arranged on the edge of the top of the lower mold (12), a lower mold cavity (14) is opened in the middle of the top of the lower mold (12), and a lower sealing groove (14) is opened on the edge of the lower mold cavity (14) 5), a lower sealing ring (16) is arranged in the lower sealing groove (15), the upper mold (2) comprises an upper mold mounting plate (21) and an upper mold (22), the upper mold (22) is installed at the bottom of the upper mold mounting plate (21), four first guide sleeves (23) are evenly arranged on the edge of the bottom of the upper mold (22), an upper mold cavity (24) is opened in the middle of the bottom of the upper mold (22), an upper sealing groove (25) is opened on the edge of the upper mold cavity (24), an upper sealing ring (26) is arranged in the upper sealing groove (25), the guide mechanism (3) comprises a second guide column (31), a second guide sleeve (32) and a spring (33), four second guide columns (31) are arranged, and the four second guide columns (31) are evenly arranged on the lower mold mounting plate (11), and the second Four guide sleeves (32) are provided, and the four second guide sleeves (32) are evenly arranged on the upper mold mounting plate (21). The second guide sleeve (32) is sleeved on the second guide column (31). A spring (33) is sleeved on the second guide sleeve (32). One end of the spring (33) is fixedly connected to the upper mold mounting plate (21), and the other end of the spring (33) is fixedly connected to the lower mold mounting plate (11). The positioning mechanism (4) includes two groups of positioning components arranged at intervals, each group of positioning components includes a plurality of blank positioning pins (41) and a plurality of positioning pin holes (42). The plurality of positioning pin holes (42) are evenly distributed in a circumferential manner inside the upper mold cavity (24), and the plurality of blank positioning pins (41) are evenly distributed in a circumferential manner inside the lower mold cavity (14). Adjacent blank positioning pins (41) are evenly distributed in a circumferential manner inside the lower mold cavity (14). A positioning area (43) is formed between the three blank positioning pins (41); a gas injection hole (54) is provided on the lower mold cavity (14) near the center of the positioning area (43); an arched groove (56) is provided on the upper mold cavity (24) near the center of the positioning area (43); the molding mechanism (5) comprises a gas injection pipe (51) and an exhaust pipe (52); the gas injection pipe (51) is arranged inside the lower mold (12); one end of the gas injection pipe (51) passes through the lower mold (12) and the lower mold mounting plate (11) in sequence and is connected to the output end of the gas storage tank; the input end of the gas storage tank is connected to the output end of the air compressor; the other end of the gas injection pipe (51) is respectively connected to a plurality of gas injection branch pipes (53); and the gas injection branch pipes (53) are connected to the gas injection hole (54).

2. A multi-station molding die for small-caliber bursting discs according to claim 1, characterized in that: The exhaust pipe (52) is installed inside the upper mold (22), and an exhaust port (55) is opened on the outer side of the upper mold (22). One end of the exhaust pipe (52) is connected to the upper mold cavity (24), and the other end of the exhaust pipe (52) is connected to the exhaust port (55).

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