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CN-121988693-A - Upper and lower die direction alignment locking device for forging ball valve cover

CN121988693ACN 121988693 ACN121988693 ACN 121988693ACN-121988693-A

Abstract

The invention discloses an upper and lower die direction alignment locking device for forging a ball valve cover, which comprises an upper bracket (1) and a lower bracket (2), wherein an upper die (3) is arranged in the upper bracket (1), a lower die (4) matched with the upper die (3) is arranged in the lower bracket (2), a clamping shaft assembly (5) is arranged on the side part of the upper die (3), a main body frame (6) is arranged on the side part of the lower die (4), an air cylinder bracket (7) is arranged on one side of the main body frame (6), a clamping air cylinder (8) is arranged on the air cylinder bracket (7), and the extending end of the clamping air cylinder (8) is connected with a top head (9). The invention realizes the accuracy and stability of the alignment of the upper die and the lower die through the locking structure, ensures the quality of the valve cover and prolongs the service life of the die.

Inventors

  • YU SHI
  • LUO HUI
  • CHEN JUNJING
  • WEI SHOUCHUN

Assignees

  • 青田球豹阀门配件有限公司

Dates

Publication Date
20260508
Application Date
20260409

Claims (8)

  1. 1. The upper and lower die direction alignment locking device for forging the ball valve cover comprises an upper support (1) and a lower support (2), wherein an upper die (3) is arranged in the upper support (1), a lower die (4) matched with the upper die (3) is arranged in the lower support (2), the upper die is characterized in that a clamping shaft assembly (5) is arranged on the side portion of the upper die (3), a main body frame (6) is arranged on the side portion of the lower die (4), an air cylinder support (7) is arranged on one side of the main body frame (6), a clamping air cylinder (8) is arranged on the air cylinder support (7), a top head (9) is connected to the extending end of the clamping air cylinder (8), clamping rod groups (10) capable of transversely displacing are arranged on two sides of the main body frame (6), the top head (9) is abutted to the driving ends of the clamping rod groups (10) on two sides, a shaft body of the clamping shaft assembly (5) extends into the clamping ends of the clamping rod groups (10) on the two sides and forms clamping fit, and a locking assembly (11) matched with the clamping ends of the clamping rod groups (10) is arranged in the clamping shaft assembly (5).
  2. 2. The device for aligning and locking the upper die and the lower die of the forging of the valve cover of the ball valve according to claim 1, wherein the clamping shaft assembly (5) comprises a side plate (13) arranged at the side part of the upper die (3), a lock shaft (14) is arranged at the bottom of the side plate (13), the lock shaft (14) is arranged between the clamping ends of the clamping rod groups (10) at the two sides, and the locking assembly (11) is arranged in the lock shaft (14).
  3. 3. The device for aligning and locking the upper die and the lower die of the forging of the valve cover of the ball valve as claimed in claim 2, wherein the locking assembly (11) comprises a locking cylinder (15) arranged on the side plate (13), the extending end of the locking cylinder (15) is connected with a ball control rod (16), a cavity (17) is arranged in the lock shaft (14), a clamping ball (18) capable of protruding outwards and movably is arranged on the inner wall of the cavity (17), the ball control rod (16) is used for controlling the radial movement of the clamping ball (18), and the clamping ball (18) is matched with a hole site of the inner wall of the clamping end of the clamping rod group (10).
  4. 4. The device for aligning and locking the upper and lower die directions for forging the valve cover of the ball valve according to claim 3, wherein the ball control rod (16) comprises a rod body (19) connected with the extending end of the locking cylinder (15), a main ball body (20) is arranged at the end part of the rod body (19), the main ball body (20) is abutted with the clamping ball (18), a stop lever (21) is arranged at the bottom of the main ball body (20), and an auxiliary ball body (22) is arranged at the tail end of the stop lever (21).
  5. 5. The upper and lower die direction alignment locking device for forging the ball valve cover according to claim 2 is characterized in that the clamping rod group (10) comprises a driving rod (23) arranged on two side channels of a main body frame (6), one end of the driving rod (23) is abutted against a plug (9), a positioning seat (24) is arranged on the side portion of the main body frame (6), a linkage rod (25) is arranged in the positioning seat (24), cylinder sleeves (26) are arranged on two inner sides of the main body frame (6), clamping rods (27) are arranged in the cylinder sleeves (26), the outer ends of the clamping rods (27) are abutted against one end of the linkage rod (25) through an inclined surface structure, clamping holes (28) which are matched with clamping balls (18) are formed in the inner ends of the clamping rods (27), a reset cavity (29) is formed in one side of the main body frame (6), and two ends of the reset spring (30) are abutted against the corresponding cylinder sleeves (26) respectively.
  6. 6. The device for aligning and locking the upper and lower die directions for forging the valve cover of the ball valve according to claim 5, wherein a stabilizing cylinder (31) is arranged at the upper part of the main body frame (6), a positioning column (32) is arranged at the extending end of the stabilizing cylinder (31), and a positioning hole (33) matched with the positioning column (32) is arranged on the cylinder sleeve (26).
  7. 7. The device for aligning and locking the upper die and the lower die of the forging of the valve cover of the ball valve as claimed in claim 5, wherein the driving rod (23) is provided with a limiting groove (34), the main body frame (6) is internally provided with a limiting rod (35) penetrating through the limiting groove (34), and a buffer spring (36) is further arranged between the inner wall of the limiting groove (34) and the limiting rod (35).
  8. 8. The device for aligning and locking the upper die and the lower die of the forging of the valve cover of the ball valve according to claim 5, wherein one side of the main body frame (6) is provided with a sealing cover (37) for opening the reset cavity (29).

Description

Upper and lower die direction alignment locking device for forging ball valve cover Technical Field The invention relates to the field of valve body forging equipment, in particular to an upper die and lower die direction alignment locking device for forging a ball valve cover. Background The ball valve cover is a core component of the ball valve, the molding precision of the ball valve cover directly determines the sealing effect and the integral use performance of the ball valve, and the ball valve cover is generally molded by adopting a forging process in the industrial production at present. The existing valve cover forging mostly adopts an upper-lower split type die structure, such as a hydraulic valve cover die disclosed in Chinese patent publication No. CN204449166U, namely an upper die and a lower die, wherein the upper die consists of a base plate, a pre-stress ring, an insert and a die core, the die core is fixedly assembled in the pre-stress ring, one end of the insert is embedded into the die core and is fixedly connected with the die core, the other end of the insert extends out from the bottom of the die core, a groove structure is formed between the top of the die core and the pre-stress ring, the base plate is adaptively arranged in the groove, the bottom of the die core and the end part of the insert extending out of the die core are jointly surrounded to form an upper die cavity, and the lower die is matched with the upper die cavity to complete the valve cover forging. In the actual forging operation, lateral thrust is generated on the die in the metal blank filling process, impact acting force generated when the forging equipment operates is superposed, after the die is used repeatedly for a long time, tiny dislocation offset is easily generated between the upper die and the lower die, and stable alignment precision is difficult to maintain. Disclosure of Invention The invention aims to provide an upper die and lower die direction alignment locking device for forging a ball valve cover. The invention realizes the accuracy and stability of the alignment of the upper die and the lower die through the locking structure, ensures the quality of the valve cover and prolongs the service life of the die. The upper die and lower die direction alignment locking device for forging the ball valve cover comprises an upper support and a lower support, wherein an upper die is arranged in the upper support, a lower die matched with the upper die is arranged in the lower support, a clamping shaft assembly is arranged on the side portion of the upper die, a main body frame is arranged on the side portion of the lower die, an air cylinder support is arranged on one side of the main body frame, a clamping air cylinder is arranged on the air cylinder support, the extending end of the clamping air cylinder is connected with a top head, clamping rod groups capable of transversely displacing are arranged on two sides of the main body frame, the top head is abutted against driving ends of the clamping rod groups on two sides, a shaft body of the clamping shaft assembly extends into the space between the clamping ends of the clamping rod groups on two sides and forms clamping fit, and a locking assembly matched with the clamping ends of the clamping rod groups is arranged in the clamping shaft assembly. In the upper and lower die direction alignment locking device for forging the ball valve cover, the clamping shaft assembly comprises a side plate arranged at the side part of the upper die, a locking shaft is arranged at the bottom of the side plate and arranged between clamping ends of clamping rod groups at two sides, and the locking assembly is arranged in the locking shaft. In the upper and lower die direction alignment locking device for forging the ball valve cover, the locking assembly comprises a locking cylinder arranged on the side plate, the extending end of the locking cylinder is connected with a ball control rod, a cavity is arranged in the lock shaft, a clamping ball capable of protruding outwards and movably is arranged on the inner wall of the cavity, and the ball control rod is used for controlling radial movement of the clamping ball, and the clamping ball is matched with a hole site of the inner wall of the clamping end of the clamping rod group. In the upper and lower die direction alignment locking device for forging the ball valve cover, the ball control rod comprises a rod body connected with the extending end of the locking cylinder, the end part of the rod body is provided with a main ball body, the main ball body is abutted with the clamping ball, the bottom of the main ball body is provided with a stop lever, and the tail end of the stop lever is provided with an auxiliary ball body. In the upper and lower die direction alignment locking device for forging the ball valve cover, the clamping rod group comprises driving rods arranged on channels at two sides of the main body frame, one e