CN216175709U

CN216175709U - Water rises mould drift structure

Info

Publication number: CN216175709U
Application number: CN202122593146.XU
Authority: CN
Inventors: 朱演霖; 麦海东
Original assignee: Shenzhen Minle Pipe Industry Co ltd
Current assignee: Shenzhen Minle Pipe Industry Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-04-05
Anticipated expiration: 2031-10-27

Abstract

The utility model relates to the technical field of dies, in particular to a punch structure of a water expansion die. A water rises mould drift structure, wherein includes: the punching head seat is internally provided with an air pressure bin and is provided with an upper air inlet and a lower air inlet which are communicated with two ends of the air pressure bin; the punch is fixedly arranged on the punch seat, and a punch through hole penetrating through the punch is formed in the punch; the punch seat is provided with a water inlet which is communicated to the air pressure bin, one end of the air pressure bin is provided with an axle hole, and the axle hole is communicated with the punch through hole; the piston block is arranged in the air pressure bin and is connected with the air pressure bin in a sliding manner, and the upper air inlet and the lower air inlet are separated and not communicated by the piston block; the pneumatic storage device also comprises a gland which is detachably arranged at the end part of the pneumatic bin. The utility model solves the defect of unstable sizes of the convex ring and the bellmouth caused by unstable water pressure in the cavity when the stainless steel pipe is formed.

Description

Water rises mould drift structure

Technical Field

The utility model relates to the technical field of dies, in particular to a punch structure of a water expansion die.

Background

The water expansion forming machine can also be called as a water expansion forming machine. The method is mainly suitable for the water swelling forming process of parts with complex surface shapes and high linearity. Such as: the water expansion process of vacuum cups, vacuum bottles, kettles and other tableware and utensils made of stainless steel, copper, aluminum, iron and other materials. The principle is that a pipe is used as a blank, water is used as a transmission medium, water with ultrahigh pressure is filled into the pipe to generate pressure on the inner wall of the pipe, two ends of the pipe are sealed by punches, and material supplement is provided for pipe forming by axial feeding, so that the outer wall of the pipe is completely attached to a die cavity, and a part with a required shape is obtained. The industry for the application of the process is constantly developing and extending. Wherein, the product produced by the Xingdi rapid water expansion forming machine by adopting the process has unique appearance which can not be realized by the products produced by other technologies.

The punch of the water expansion die for the stainless steel pipe fitting is the key for stabilizing the shape and the size of the formed pipe fitting. The existing die punch can not realize self pressure maintaining in the punch when a stainless steel pipe is subjected to water expansion forming, water pressure instability occurs in the forming process of a workpiece, the size of a product is unstable, and in a multi-cavity die, the die cavities of all products can be subjected to pressure loss, so that all the products are defective or scrapped.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems at least to a certain extent, and provides a water expansion die punch structure which solves the defect of unstable sizes of a convex ring and a socket caused by unstable water pressure in a cavity during the forming of a stainless steel pipe.

The technical scheme of the utility model is as follows: a water rises mould drift structure, wherein includes:

the punching head seat is internally provided with an air pressure bin and is provided with an upper air inlet and a lower air inlet which are communicated with two ends of the air pressure bin;

the punch is fixedly arranged on the punch seat, and a punch through hole penetrating through the punch is formed in the punch;

the punch seat is provided with a water inlet which is communicated to the air pressure bin, one end of the air pressure bin is provided with an axle hole, and the axle hole is communicated with the punch through hole;

the piston block is arranged in the air pressure bin and is connected with the air pressure bin in a sliding manner, and the upper air inlet and the lower air inlet are separated and not communicated by the piston block;

the pneumatic storage device also comprises a gland which is detachably arranged at the end part of the pneumatic bin.

Furthermore, the water expansion die punch structure further comprises a pressing plate, and the pressing plate is fixedly installed on one side of the punch seat through a bolt.

Furthermore, a fixing hole is formed in the pressing plate, and the punch penetrates through the fixing hole.

Furthermore, the outer wall of the piston block is respectively sleeved with a first sealing ring and a second sealing ring.

Furthermore, the middle part of the piston block is provided with a piston block concave part.

Furthermore, drift seat one end be equipped with the constant head tank, constant head tank and shaft hole intercommunication, the tip of drift peg graft in the constant head tank.

Furthermore, a sealing gasket is arranged between the end part of the punch and the positioning groove.

Furthermore, the whole punch is of a cylindrical structure.

Furthermore, the punch through hole is formed in the central axis of the punch in the length direction.

Furthermore, the punch head seat is internally provided with a gland containing cavity, and the gland is arranged in the gland containing cavity.

Compared with the prior art, the beneficial effects are: according to the utility model, a piston system is added in a punch of the die, when a lower air inlet of the piston system is ventilated and an upper air inlet is closed, a piston block is in an open state, and the punch is filled with water from a water inlet to carry out water expansion molding; when the upper air inlet of the piston system is ventilated and the lower air inlet is closed, the piston block is in a closed state, and the water inlet of the punch is closed by the piston block, so that the pressure of the die cavity is maintained.

When the stainless steel pipe is formed by water expansion, the technology of the utility model can solve the defect of unstable sizes of the convex ring and the socket caused by unstable water pressure in the cavity when the stainless steel pipe is formed.

Drawings

Fig. 1 is an overall perspective view of the present invention.

Fig. 2 is an overall sectional view of the present invention.

Fig. 3 is a schematic diagram of the overall explosion of the present invention.

Figure 4 is a schematic cross-sectional view of a punch platform of the present invention.

In the figure: 1. the novel punch press comprises a bolt, 2 a pressing plate, 3 a punch, 4 a sealing gasket, 5 a punch seat, 6 a first sealing ring, 7 a piston block, 8 a second sealing ring, 9 a gland, 10 an upper air inlet, 11 a lower air inlet, 12 a water inlet, 21 a fixing hole, 31 a punch through hole, 51 a positioning groove, 52 an air pressure bin, 53 a gland accommodating cavity, 54 an axle hole and 71 a piston block concave part.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

As shown in fig. 1-4, a water-swelling die punch structure, comprising:

the punch seat 5 is internally provided with an air pressure bin 52, and the punch seat 5 is provided with an upper air inlet 10 and a lower air inlet 11 which are communicated with two ends of the air pressure bin 52;

a punch 3, wherein the punch 3 is fixedly arranged on the punch seat 5, and a punch through hole 31 penetrating through the punch is arranged in the punch 3;

the punch seat 5 is provided with a water inlet 12, the water inlet 12 is communicated with an air pressure bin 52, one end of the air pressure bin 52 is provided with a shaft hole 54, and the shaft hole 54 is communicated with the punch through hole 31;

the air compressor also comprises a piston block 7 arranged in the air pressure bin 52, the piston block 7 is arranged in the air pressure bin 52 and is connected with the air pressure bin 52 in a sliding manner, and the piston block 7 separates and does not communicate the upper air inlet 10 and the lower air inlet 11;

the pneumatic cover further comprises a gland 9 which is detachably arranged at the end part of the pneumatic bin 52.

In this embodiment, the water inlet 12 of the punch seat 5 is communicated with an external water supply expansion machine to achieve the water expansion forming work; the piston block 7 is arranged in the air pressure chamber 52 and is connected with the air pressure chamber 52 in a sliding way, and the upper air inlet 10 and the lower air inlet 11 are separated and not communicated by the piston block 7; the piston block 7 can move up and down in the pneumatic bin 52; according to the utility model, a piston system (mainly a piston block 7) is added in the die, when a lower air inlet 11 of the piston system is ventilated and an upper air inlet 10 is closed, the piston block 7 is in an open state, and a punch 3 is injected with water from a water inlet 12 for water expansion molding; when the upper air inlet 10 of the piston system is ventilated and the lower air inlet 11 is closed, the piston block 7 is in a closed state, and the water inlet 12 of the punch is closed by the piston block 7, so that the pressure of the die cavity is maintained. The defect that the sizes of the convex ring and the socket are unstable due to unstable water pressure in the cavity can be overcome when the stainless steel pipe is subjected to water expansion molding.

Further, the water expansion die punch structure further comprises a pressing plate 2, and the pressing plate 2 is fixedly installed on one side of the punch seat 5 through a bolt 1. The pressing plate 2 is internally provided with a fixing hole 21, and the punch 3 passes through the fixing hole 21. In this embodiment, the size of the fixing hole 21 is matched with the size of the outer contour of the punch 3, and the punch 3 is fixedly connected with the punch holder 5 through the pressing plate 2 by increasing the pressing plate 2. The body of the punch 3 is in the fixing hole 21, so that the entire connection is more firm and the problem that the punch 3 slips under high pressure is prevented. And through the connected mode of bolt 1 for the installation of drift 3 is dismantled succinctly more convenient.

Further, the outer wall of the piston block 7 is respectively sleeved with a first sealing ring 6 and a second sealing ring 8. The piston block 7 is provided with a piston block recess 71 in the middle. Because the air pressure chamber 52 is filled with water and air, the first sealing ring 6 and the second sealing ring 8 play a role in increasing the sealing effect of the joint.

Furthermore, one end of the punch seat 5 is provided with a positioning groove 51, the positioning groove 51 is communicated with the shaft hole 54, and the end part of the punch 3 is inserted into the positioning groove 51. In this embodiment, as shown in fig. 2 to 4, the lower end portion of the punch 3 is a convex structure extending outward from the radial direction, the lower end portion of the punch 3 is inserted into the positioning groove 51, so that the connection between the punch 3 and the punch holder 5 is firmer, and in addition, water entering from the water inlet 12 can sequentially pass through the air pressure chamber 52, the shaft hole 54 and the positioning groove 51 and finally flow into the punch through hole 31.

Further, as shown in fig. 2-3, a sealing gasket 4 is disposed between the end of the punch 3 and the positioning groove 51, and a through hole is disposed in the middle of the sealing gasket 4 and communicates with the punch through hole 31. The sealing gasket 4 is additionally arranged, so that the sealing effect is enhanced, and water is prevented from overflowing from the punch seat 5.

Further, the punch 3 is of a cylindrical structure as a whole. The punch through hole 31 is provided on the center axis of the punch 3 in the longitudinal direction. The overall shape of the punch 3 conforms to the characteristics of water expansion forming.

Further, a gland accommodating cavity 53 is further formed in the punch seat 5, and the gland 9 is arranged in the gland accommodating cavity 53. The size of the gland receiving cavity 53 is adapted to the size of the gland 9. And the gland 9 is detachably installed in the gland accommodating chamber 53 at the end of the pneumatic chamber 52.

The working principle is as follows: as shown in fig. 1-4, the piston block 7 is installed in the pneumatic chamber 52 and slidably connected to the pneumatic chamber 52, and the piston block 7 separates and does not communicate between the upper air inlet 10 and the lower air inlet 11; the piston block 7 can move up and down in the pneumatic bin 52; according to the utility model, a piston system (mainly a piston block 7) is added in the die, when a lower air inlet 11 of the piston system is ventilated and an upper air inlet 10 is closed, the piston block 7 is in an open state, and a punch 3 is injected with water from a water inlet 12 for water expansion molding; water entering from the water inlet 12 can pass through the air pressure bin 52, the shaft hole 54 and the positioning groove 51 in sequence and finally flows into the punch through hole 31 for water expansion forming.

When the upper air inlet 10 of the piston system is ventilated and the lower air inlet 11 is closed, the piston block 7 is in a closed state, and the water inlet 12 of the punch is closed by the piston block 7, so that the pressure of the die cavity is maintained.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a water rises mould drift structure which characterized in that includes:

the punching head comprises a punching head seat (5), wherein an air pressure bin (52) is arranged inside the punching head seat (5), and the punching head seat (5) is provided with an upper air inlet (10) and a lower air inlet (11) which are communicated with two ends of the air pressure bin (52);

the punch (3), the punch (3) is fixedly arranged on the punch base (5), and a punch through hole (31) penetrating through the punch is formed in the punch (3);

the punch head seat (5) is provided with a water inlet (12), the water inlet (12) is communicated to an air pressure bin (52), one end of the air pressure bin (52) is provided with a shaft hole (54), and the shaft hole (54) is communicated with the punch head through hole (31);

the air compressor further comprises a piston block (7) arranged in the air pressure bin (52), the piston block (7) is arranged in the air pressure bin (52) and is connected to the air pressure bin (52) in a sliding mode, and the upper air inlet (10) and the lower air inlet (11) are separated and not communicated through the piston block (7);

the pneumatic device also comprises a gland (9) which is detachably arranged at the end part of the pneumatic bin (52).

2. The water-swelling die punch structure according to claim 1, wherein: the water expansion die punch structure further comprises a pressing plate (2), and the pressing plate (2) is fixedly installed on one side of the punch seat (5) through a bolt (1).

3. The water-swelling die punch structure according to claim 2, wherein: the pressing plate (2) is internally provided with a fixing hole (21), and the punch (3) penetrates through the fixing hole (21).

4. The water-swelling die punch structure according to claim 1, wherein: the outer wall of the piston block (7) is respectively sleeved with a first sealing ring (6) and a second sealing ring (8).

5. The water-swelling die punch structure according to claim 4, wherein: the middle part of the piston block (7) is provided with a piston block concave part (71).

6. The water-swelling die punch structure according to claim 1, wherein: one end of the punch head seat (5) is provided with a positioning groove (51), the positioning groove (51) is communicated with the shaft hole (54), and the end part of the punch head (3) is inserted into the positioning groove (51).

7. The water-swelling die punch structure according to claim 6, wherein: and a sealing gasket (4) is arranged between the end part of the punch (3) and the positioning groove (51).

8. The water-swelling die punch structure according to any one of claims 1 to 7, wherein: the punch (3) is integrally of a cylindrical structure.

9. The water-swelling die punch structure according to claim 8, wherein: the punch through hole (31) is arranged on the central axis of the punch (3) in the length direction.

10. The water-swelling die punch structure according to claim 1, wherein: still be equipped with gland in punch holder (5) and hold chamber (53), gland (9) are located in gland holds chamber (53).