Three-ring head ring spring inner support type punch structure

Abstract

The utility model discloses a three-ring head ring spring inner support type punch structure which comprises a punch body, a ring seat is installed on the top of the punch body, a head sealing ring, a middle ring and a tail ring are sequentially arranged at the outer side end of the ring seat, a pushing plate is fixedly connected to the end, away from the ring seat, of a supporting spring, and the pushing plate is fixedly connected with the tail ring. A rectangular first sliding cavity is formed in the outer side end of the ring seat, a connecting pipeline, an input oil cavity and an output oil cavity are arranged in the ring seat, a first transmission rod is fixedly connected to the middle of the end, away from the outer side end of the ring seat, of an input supporting plate, an input piston is slidably connected into the input oil cavity, and an output piston is slidably connected into the output oil cavity. And a rectangular second sliding cavity is formed between the two mounting grooves, and an output supporting plate is slidably connected into the second sliding cavity. Pressure is applied to the input supporting plate, and the output supporting plate applies outward tension to the head sealing ring through hydraulic transmission, so that the head sealing ring is expanded, and the head sealing ring is convenient to disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of parts of die-casting equipment, in particular to a three-ring head ring spring inner support type punch structure. Background Technique

[0002] Pressure casting refers to a casting method in which molten or semi-molten metal is injected into a metal mold at high speed and crystallized under pressure, abbreviated as die-casting. Among them, the injection punch is an important part on the die-casting machine.

[0003] The patent application number is "CN202022672005.2", and the patent name is "A spring inner support type ring punch". A first steel ring, at least one copper ring, and a second steel ring are sequentially sleeved on the outer circumference of the ring seat. The first steel ring is a whole ring, and both the copper ring and the second steel ring are broken rings. A plurality of annular grooves are arranged at intervals on the outer circumferential surface of the ring seat. Through the inner support springs arranged in the annular grooves to support the corresponding copper ring and the second steel ring. The copper ring is always in close contact with the inner wall of the injection chamber, greatly improving the product quality.

[0004] However, the copper ring will be worn after long-term use, especially the copper ring located at the upper head of the punch is the most worn. In order to ensure the sealing performance of the copper ring on the punch, it needs to be replaced regularly. However, when the copper ring is installed, it is sleeved on the punch by smearing lubricating oil on its surface and using the method of knocking, so that the gap between the copper ring and the surface of the punch is small and it is difficult to remove quickly. Content of the Utility Model

[0005] The purpose of the utility model is to provide a three-ring head ring spring inner support type punch structure, which can expand the copper ring from the inside of the copper ring located at the head of the punch to cause a large deformation, so as to quickly disassemble the copper ring at the head and facilitate the replacement of the copper ring at the head.

[0006] To achieve the above object, a three-ring head ring spring inner support type punch structure is provided, including a punch body. A ring seat is installed at the top of the punch body. A head sealing ring, a middle ring, and a tail ring are sequentially arranged at the outer end of the ring seat. Annular grooves for accommodating the head sealing ring, the middle ring, and the tail ring are respectively provided at the outer end of the ring seat. The head sealing ring, the middle ring, and the tail ring at the outer end of the ring seat are all open rings. Two annular mounting grooves are symmetrically provided in the annular groove of the ring seat for accommodating the head sealing ring. Two groups of support springs are symmetrically and fixedly connected in the two mounting grooves. One end of the support spring away from the ring seat is fixedly connected to a push plate, and the push plate is slidably connected to the inner wall of the head sealing ring. A rectangular first sliding cavity is provided at the outer end of the ring seat, and the first sliding cavity is located above the head sealing ring. A connecting pipe, an input oil cavity, and an output oil cavity are provided in the ring seat, and both ends of the connecting pipe are respectively communicated with the input oil cavity and the output oil cavity. An input support plate is slidably connected in the first sliding cavity. The middle of one end of the input support plate away from the outer end of the ring seat is fixedly connected to a first transmission rod, and one end of the first transmission rod extends to the middle of the input oil cavity. An input piston is slidably connected in the input oil cavity, and one end of the first transmission rod is fixedly connected to the middle of the input piston. An output piston is slidably connected in the output oil cavity. The middle of one end of the output piston away from the connecting pipe is fixedly connected to a second transmission rod. A rectangular second sliding cavity is provided between the two mounting grooves, and one end of the second transmission rod extends to the middle of the second sliding cavity. An output support plate is slidably connected in the second sliding cavity, and one end of the second transmission rod is fixedly connected to the middle of the side end of the output support plate. It can expand the copper ring inside the copper ring located at the head of the punch to cause a large deformation, so as to quickly disassemble the copper ring at the head and facilitate the replacement of the copper ring at the head.

[0007] According to the three-ring head ring spring inner support type punch structure described above, a first sealing ring is slidably connected to the outer end of the first transmission rod, and the first transmission rod passes through the middle of the first sealing ring. The outer end of the first sealing ring is fixedly connected between the input oil cavity and the first sliding cavity, and both ends of the first sealing ring respectively penetrate through the input oil cavity and the first sliding cavity. It is used to reduce the gap between the first transmission rod and the ring seat and avoid friction between the first transmission rod and the ring seat.

[0008] According to the three-ring head ring spring inner support type punch structure described above, a fourth sealing ring is fixedly connected to the outer end of the input piston, and the input piston passes through the middle of the fourth sealing ring. The outer end of the fourth sealing ring is slidably connected to the side wall of the input oil cavity. It is used to reduce the gap between the input piston and the side wall of the input oil cavity and improve the sealing effect of the input piston on the input oil cavity.

[0009] According to the three-ring head ring spring inner support type punch structure described above, a second sealing ring is slidably connected to the outer end of the second transmission rod, and the second transmission rod passes through the middle of the second sealing ring. The outer end of the second sealing ring is fixedly connected between the output oil cavity and the second sliding cavity, and both ends of the second sealing ring penetrate through the output oil cavity and the second sliding cavity respectively. It is used to reduce the gap between the second transmission rod and the ring seat and prevent friction between the second transmission rod and the ring seat.

[0010] According to the three-ring head ring spring inner support type punch structure described above, a third sealing ring is fixedly connected to the outer end of the output piston, and the output piston passes through the middle of the third sealing ring. The outer end of the third sealing ring is slidably connected to the side wall of the output oil cavity. It is used to reduce the gap between the output piston and the side wall of the output oil cavity, improve the sealing effect of the output piston on the output oil cavity, and prevent hydraulic oil from leaking.

[0011] According to the three-ring head ring spring inner support type punch structure described above, there are two connection pipes, first sliding cavities, input oil cavities, second sliding cavities, and output oil cavities respectively, and the connection pipes, first sliding cavities, input oil cavities, second sliding cavities, and output oil cavities are symmetrically arranged on the ring seat. It is used to simultaneously expand both inner sides of the head sealing ring and increase the deformation of the head sealing ring.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: By applying pressure to the input support plate, it is transmitted to the input piston through the first transmission rod. The input piston applies pressure to the hydraulic oil in the input oil cavity. The hydraulic oil in the input oil cavity enters the output oil cavity through the connection pipe. Using hydraulic transmission, the hydraulic oil applies a thrust to the output piston. Through the transmission of the second transmission rod, the output support plate applies an outward tension to the head sealing ring, so that the head sealing ring is expanded, facilitating the disassembly of the head sealing ring.

[0013] Additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0014] The following further illustrates the present utility model in conjunction with the drawings and embodiments;

[0015] Figure 1 It is a three-dimensional view of the three-ring head ring spring inner support type punch structure of the present utility model;

[0016] Figure 2 It is a cross-sectional view of the three-ring head ring spring inner support type punch structure of the present utility model;

[0017] Figure 3 It is Figure 3 The enlarged view at A in

[0018] Figure 4 is Figure 3 The enlarged view of part A in

[0019] In the figure: 1. Ring seat; 2. Middle ring; 3. Punch body; 4. Tail ring; 5. Head sealing ring; 6. Input support plate; 7. Support spring; 8. Output support plate; 9. Output piston; 10. Connecting pipe; 11. First sliding cavity; 12. Input oil cavity; 13. Input piston; 14. First transmission rod; 15. First sealing ring; 16. Second transmission rod; 17. Installation groove; 18. Second sliding cavity; 19. Second sealing ring; 20. Third sealing ring; 21. Output oil cavity; 22. Fourth sealing ring. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-4, the present utility model provides a technical solution: a three-ring head ring spring inner support type punch structure, which includes a punch body 3. A ring seat 1 is installed at the top of the punch body 3. A head seal ring 5, a middle ring 2 and a tail ring 4 are successively arranged at the outer end of the ring seat 1. And annular grooves for accommodating the head seal ring 5, the middle ring 2 and the tail ring 4 are respectively arranged at the outer end of the ring seat 1. The head seal ring 5, the middle ring 2 and the tail ring 4 at the outer end of the ring seat 1 are all open rings. Two annular installation grooves 17 are symmetrically arranged in the annular groove of the ring seat 1 for accommodating the head seal ring 5. Two groups of support springs 7 are symmetrically fixedly connected in the two installation grooves 17. One end of the support spring 7 away from the ring seat 1 is fixedly connected with a push plate, and the push plate is slidably connected with the inner wall of the head seal ring 5. A rectangular first sliding cavity 11 is arranged at the outer end of the ring seat 1, and the first sliding cavity 11 is located above the head seal ring 5. A connecting pipe 10, an input oil cavity 12 and an output oil cavity 21 are arranged in the ring seat 1. And both ends of the connecting pipe 10 are respectively communicated with the input oil cavity 12 and the output oil cavity 21. An input support plate 6 is slidably connected in the first sliding cavity 11. The middle of one end of the input support plate 6 away from the outer end of the ring seat 1 is fixedly connected with a first transmission rod 14. And one end of the first transmission rod 14 extends to the middle of the input oil cavity 12. A first sealing ring 15 is slidably connected to the outer end of the first transmission rod 14, and the first transmission rod 14 penetrates through the middle of the first sealing ring 15. The outer end of the first sealing ring 15 is fixedly connected between the input oil cavity 12 and the first sliding cavity 11, and both ends of the first sealing ring 15 respectively penetrate through the input oil cavity 12 and the first sliding cavity 11, so as to reduce the gap between the first transmission rod 14 and the ring seat 1 and avoid friction between the first transmission rod 14 and the ring seat 1. An input piston 13 is slidably connected in the input oil cavity 12, and one end of the first transmission rod 14 is fixedly connected with the middle of the input piston 13. A fourth sealing ring 22 is fixedly connected to the outer end of the input piston 13, and the input piston 13 penetrates through the middle of the fourth sealing ring 22. The outer end of the fourth sealing ring 22 is slidably connected with the side wall of the input oil cavity 12, so as to reduce the gap between the input piston 13 and the side wall of the input oil cavity 12 and improve the sealing effect of the input piston 13 on the input oil cavity 12. An output piston 9 is slidably connected in the output oil cavity 21. A third sealing ring 20 is fixedly connected to the outer end of the output piston 9, and the output piston 9 penetrates through the middle of the third sealing ring 20. The outer end of the third sealing ring 20 is slidably connected with the side wall of the output oil cavity 21, so as to reduce the gap between the output piston 9 and the side wall of the output oil cavity 21 and improve the sealing effect of the output piston 9 on the output oil cavity 21 and avoid leakage of hydraulic oil.At the middle of one end of the output piston 9 away from the connecting pipe 10, a second transmission rod 16 is fixedly connected. A rectangular second sliding cavity 18 is provided between two mounting grooves 17. One end of the second transmission rod 16 extends to the middle of the second sliding cavity 18. The outer end of the second transmission rod 16 is slidably connected with a second sealing ring 19, and the second transmission rod 16 penetrates through the middle of the second sealing ring 19. The outer end of the second sealing ring 19 is fixedly connected between the output oil cavity 21 and the second sliding cavity 18, and both ends of the second sealing ring 19 penetrate through the output oil cavity 21 and the second sliding cavity 18 respectively, so as to reduce the gap between the second transmission rod 16 and the ring seat 1 and avoid friction between the second transmission rod 16 and the ring seat 1. An output support plate 8 is slidably connected in the second sliding cavity 18, and one end of the second transmission rod 16 is fixedly connected with the middle of the side end of the output support plate 8. There are two connecting pipes 10, first sliding cavities 11, input oil cavities 12, second sliding cavities 18 and output oil cavities 21 respectively, and the connecting pipes 10, first sliding cavities 11, input oil cavities 12, second sliding cavities 18 and output oil cavities 21 are symmetrically arranged on the ring seat 1, so as to simultaneously expand both sides inside the head sealing ring 5 and increase the deformation amount of the head sealing ring 5.

[0022] Working principle: When disassembling the head sealing ring 5, use a tooling fixture to clamp the input support plates 6 on both sides of the punch and apply pressure to the input support plates 6. The first transmission rod 14 transmits the force to the input piston 13. The input piston 13 applies pressure to the hydraulic oil in the input oil cavity 12. The hydraulic oil in the input oil cavity 12 enters the output oil cavity 21 through the connecting pipe 10. The hydraulic oil in the input oil cavity 12 applies a thrust to the output piston 9. The second transmission rod 16 transmits the thrust received by the output piston 9 to the output support plate 8, so that the output support plate 8 applies an outward tension to the head sealing ring 5, thereby expanding the head sealing ring 5 and increasing the gap between the head sealing ring 5 and the outer end of the punch, which is convenient for disassembling the head sealing ring 5.

[0023] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art to which the present invention pertains, various changes can be made without departing from the purpose of the present invention.

Claims

1. The structure of a three-ring head ring spring inner support type punch, including a punch body (3), is characterized in that, A ring seat (1) is installed at the top of the punch body (3). A head sealing ring (5), a middle ring (2), and a tail ring (4) are sequentially arranged at the outer end of the ring seat (1). Annular grooves for accommodating the head sealing ring (5), the middle ring (2), and the tail ring (4) are respectively provided at the outer end of the ring seat (1). The head sealing ring (5), the middle ring (2), and the tail ring (4) at the outer end of the ring seat (1) are all split rings. Two annular mounting grooves (17) are symmetrically arranged in the annular groove of the ring seat (1) for accommodating the head sealing ring (5). Two groups of support springs (7) are symmetrically and fixedly connected in the two mounting grooves (17). One end of the support spring (7) away from the ring seat (1) is fixedly connected with a push plate, and the push plate is slidably connected with the inner wall of the head sealing ring (5). A rectangular first sliding cavity (11) is provided at the outer end of the ring seat (1), and the first sliding cavity (11) is located above the head sealing ring (5). A connecting pipe (10), an input oil cavity (12), and an output oil cavity (21) are provided in the ring seat (1), and both ends of the connecting pipe (10) are communicated with the input oil cavity (12) and the output oil cavity (21) respectively. An input support plate (6) is slidably connected in the first sliding cavity (11). The middle of one end of the input support plate (6) away from the outer end of the ring seat (1) is fixedly connected with a first transmission rod (14), and one end of the first transmission rod (14) extends to the middle of the input oil cavity (12). An input piston (13) is slidably connected in the input oil cavity (12), and one end of the first transmission rod (14) is fixedly connected with the middle of the input piston (13). An output piston (9) is slidably connected in the output oil cavity (21). The middle of one end of the output piston (9) away from the connecting pipe (10) is fixedly connected with a second transmission rod (16). A rectangular second sliding cavity (18) is provided between the two mounting grooves (17), and one end of the second transmission rod (16) extends to the middle of the second sliding cavity (18). An output support plate (8) is slidably connected in the second sliding cavity (18), and one end of the second transmission rod (16) is fixedly connected with the middle of the side end of the output support plate (8).

2. The three-ring head ring spring inner support type punch structure according to claim 1, wherein: A first sealing ring (15) is slidably connected to the outer end of the first transmission rod (14), and the first transmission rod (14) penetrates through the middle of the first sealing ring (15). The outer end of the first sealing ring (15) is fixedly connected between the input oil cavity (12) and the first sliding cavity (11), and both ends of the first sealing ring (15) penetrate through the input oil cavity (12) and the first sliding cavity (11) respectively.

3. The three-ring head ring spring inner support type punch structure according to claim 1, characterized in that: A fourth sealing ring (22) is fixedly connected to the outer end of the input piston (13), and the input piston (13) penetrates through the middle of the fourth sealing ring (22). The outer end of the fourth sealing ring (22) is slidably connected with the side wall of the input oil cavity (12).

4. The three-ring head ring spring inner support type punch structure according to claim 1, characterized in that: A second sealing ring (19) is slidably connected to the outer end of the second transmission rod (16), and the second transmission rod (16) passes through the middle of the second sealing ring (19). The outer end of the second sealing ring (19) is fixedly connected between the output oil chamber (21) and the second sliding chamber (18), and both ends of the second sealing ring (19) penetrate through the output oil chamber (21) and the second sliding chamber (18) respectively.

5. The three-ring head ring spring inner support type punch structure according to claim 1, characterized in that: A third sealing ring (20) is fixedly connected to the outer end of the output piston (9), and the output piston (9) passes through the middle of the third sealing ring (20). The outer end of the third sealing ring (20) is slidably connected to the side wall of the output oil chamber (21).

6. The three-ring head ring spring inner support type punch structure according to claim 1, wherein: There are two each of the connecting pipes (10), the first sliding chambers (11), the input oil chambers (12), the second sliding chambers (18), and the output oil chambers (21), and the connecting pipes (10), the first sliding chambers (11), the input oil chambers (12), the second sliding chambers (18), and the output oil chambers (21) are symmetrically arranged on the ring seat (1).

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