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CN-121972739-A - Automatic tapping device for precise valve castings

CN121972739ACN 121972739 ACN121972739 ACN 121972739ACN-121972739-A

Abstract

The invention discloses an automatic tapping device for a precision valve casting, which belongs to the technical field of valve processing and comprises a support base, wherein the support base is of a hollow structure, a rotary table is rotatably connected to the top of the support base, a first driving mechanism for driving the rotary table to intermittently rotate is arranged in the support base, a fixed ring is rotatably sleeved on the outer side of the rotary table and fixedly connected with the outer wall of the support base through a plurality of first L-shaped rods, and a plurality of positioning pieces are annularly and equidistantly arranged on the top of the rotary table.

Inventors

  • YIN MENGMENG
  • ZHANG QUANHE
  • QIAN TU
  • WANG HAO

Assignees

  • 安徽建盛铸业股份有限公司

Dates

Publication Date
20260505
Application Date
20260329

Claims (10)

  1. 1. An automated tapping device for precision valve castings, comprising: The support base (1), the said support base (1) is the hollow structure; The rotary table (2) is rotatably connected to the top of the supporting base (1), and a first driving mechanism for driving the rotary table (2) to intermittently rotate is arranged in the supporting base (1); The fixed ring (4) is rotatably sleeved on the outer side of the rotary table (2) and is fixedly connected with the outer wall of the supporting base (1) through a plurality of first L-shaped rods (6); The positioning pieces are annularly and equidistantly arranged at the top of the rotary table (2) and used for positioning valve castings, and the valve castings can be rotationally conveyed through rotation of the rotary table (2) so as to finish flow production processing; the plurality of support components are circularly and equidistantly arranged at the bottom of the rotary table (2) in a rotating way, correspond to the plurality of positioning pieces up and down respectively, and can drive the corresponding positioning pieces to rotate for a certain angle in the synchronous rotating and moving process of the support components along with the rotary table (2) so as to automatically adjust the processing position of the valve casting; Two vertical plates (7) fixedly connected to the top of the fixed ring (4); The mounting plates (22) are sleeved on the two vertical plates (7) in a sliding manner, and the vertical plates (7) are provided with second driving mechanisms for driving the mounting plates (22) to move up and down; the tapping mechanisms are arranged at the bottoms of the mounting plates (22) at equal intervals in an arc shape and are respectively used for tapping different positions of the valve castings, and the mounting plates (22) are provided with third driving mechanisms for simultaneously driving the tapping mechanisms to work.
  2. 2. The automatic tapping device for the precise valve castings, according to claim 1, wherein the first driving mechanism comprises a fixed plate (3) fixedly connected inside the supporting base (1), a first motor (5) is fixedly arranged at the top of the fixed plate (3), and an output shaft of the first motor (5) rotates to penetrate through the top of the supporting base (1) and is fixedly connected with the bottom of the rotary table (2).
  3. 3. The automatic tapping device for the precise valve castings, as claimed in claim 2, is characterized in that the positioning piece comprises a positioning block (10), and a plurality of through holes (9) which are embedded and matched with the corresponding positioning block (10) are formed in the top of the rotary table (2) at equal intervals in an annular shape; square holes (11) matched with the valve castings in a positioning mode are formed in the tops of the positioning blocks (10).
  4. 4. The automatic tapping device for the precise valve castings, as claimed in claim 3, characterized in that the supporting component comprises a fluted disc (13) rotatably connected to the bottom of the rotary table (2), the fluted disc (13) is coaxial with the through hole (9), a plurality of positioning holes (15) are formed in the top of the fluted disc (13) at equal intervals in a ring shape, and a plurality of positioning rods (12) which are in positioning and inserting connection with the positioning holes (15) are fixedly connected to the bottom of the positioning block (10) at equal intervals in a ring shape; The outer wall of the support base (1) is fixedly sleeved with a first outer toothed ring (8) meshed with a plurality of fluted discs (13) simultaneously, and the fluted discs (13) can automatically rotate 90 degrees when moving one station along with the rotation of the rotary table (2).
  5. 5. The automatic tapping device for precision valve castings according to claim 4, wherein the second driving mechanism comprises a support plate (26) fixedly connected to the top of the inner side surface of the vertical plate (7), a second air cylinder (31) is fixedly installed at the bottom of the support plate (26), and an output shaft of the second air cylinder (31) faces downwards and is fixedly connected with the top of the mounting plate (22).
  6. 6. The automatic tapping device for precision valve castings according to claim 5, wherein the tapping mechanism comprises a nut block (33) penetrating through the top of the mounting plate (22), a rotating seat (34) is rotatably connected to the bottom of the nut block (33), and a tap (36) is fixedly connected to the bottom end of the rotating seat (34).
  7. 7. The automatic tapping device for precision valve castings according to claim 6, wherein the third driving mechanism comprises a second motor (23) fixedly installed at the top of the mounting plate (22), an output shaft of the second motor (23) rotates to penetrate through the bottom of the mounting plate (22) and is fixedly connected with a rotating disc (24), the bottom of the rotating disc (24) is fixedly connected with a connecting disc (27) through bolts, a plurality of struts (28) are uniformly distributed on the side edge of the connecting disc (27) in the circumferential direction, the other ends of the struts (28) are fixedly connected with the same second outer toothed ring (29), and a plurality of first gears (35) meshed with the second outer toothed ring (29) are fixedly sleeved on the outer walls of the rotating seats (34).
  8. 8. The automatic tapping device for the precise valve castings according to claim 7, wherein a plurality of sliding holes (30) are formed in the top of the mounting plate (22) at equal intervals in an arc shape, a plurality of nut blocks (33) are respectively horizontally and slidably connected in the corresponding sliding holes (30), a plurality of groups of fixing blocks (32) are fixedly connected to the top of the mounting plate (22) at equal intervals in an arc shape, the number of each group of fixing blocks (32) is two, the two fixing blocks (32) in the same group are symmetrically arranged, the same adjusting screw (38) is rotationally connected between the two fixing blocks (32), and the plurality of nut blocks (33) are respectively sleeved on the corresponding adjusting screws (38) in a threaded manner; The utility model discloses a motor control device for a motor control device, including mounting panel (22), servo motor (37) is fixed on the top fixedly connected with L shape backup pad (25) of mounting panel (22), the top fixed mounting of L shape backup pad (25) has the servo motor (37), the output shaft rotation of servo motor (37) runs through the bottom of L shape backup pad (25) and fixed cover is equipped with go-between (40), the side of go-between (40) is circumference fixedly connected with a plurality of connecting rods (41), a plurality of the bottom fixedly connected with one terminal surface ring gear (42) of connecting rod (41), a plurality of the equal fixed cover of outer wall of adjusting screw (38) is equipped with second gear (39) with terminal surface ring gear (42) engaged with.
  9. 9. An automatic tapping device for precision valve castings according to claim 4 or 8, characterized in that the top of said fluted disc (13) is provided with a relief hole (14) corresponding to the through hole (9); the outer wall of the support base (1) is provided with a plurality of bending rods (18) at equal intervals in an annular mode, the top ends of the bending rods (18) are fixedly connected with the same annular supporting plate (19), the annular supporting plate (19) is correspondingly arranged below the yielding holes (14), and a blanking notch (20) is formed in the position, corresponding to one of the yielding holes (14), of the annular supporting plate (19).
  10. 10. The automatic tapping device for precision valve castings according to claim 9, wherein a sliding plate (16) positioned below the fixed plate (3) is fixedly connected to the inside of the supporting base (1), and the bottom ends of the bending rods (18) extend to the inside of the supporting base (1) and penetrate through the fixed plate (3) to be fixedly connected with the top of the sliding plate (16); the bottom of the supporting base (1) is fixedly provided with at least one first air cylinder (17), and an output shaft of the first air cylinder (17) faces upwards and is fixedly connected with the bottom of the sliding plate (16); The outer wall of the supporting base (1) is annular and is provided with a plurality of strip-shaped holes (21) at equal intervals, and the horizontal bending parts of the bending rods (18) respectively penetrate through the corresponding strip-shaped holes (21) and can be moved and adjusted up and down in the strip-shaped holes (21).

Description

Automatic tapping device for precise valve castings Technical Field The invention belongs to the technical field of valve machining, and particularly relates to an automatic tapping device for a precision valve casting. Background The valve cover is used as a key pressure boundary part of the valve and mainly plays roles of sealing the valve body, containing the filler and installing the driving device. Under severe working conditions such as petroleum, chemical industry, nuclear power and the like, the valve cover needs to bear medium pressure, temperature fluctuation and external load for a long time, and the casting quality is directly related to the sealing reliability of the whole valve assembly. Valve covers generally include circular valve covers and square valve covers, which require drilling and then tapping during machining to facilitate the connection between the valve cover and the valve body. In the current square valve gap course of working, owing to need all carry out tapping operation in square valve gap's four corners position, traditional have and adopt manual operation, even use traditional tapping equipment, the workman is singly put square valve gap on tapping equipment to adopt the setting element to fix a position square valve gap, then operate the screw tap and start, accomplish the tapping, later reconvert square valve gap's angle, this kind of mode equipment cost drops into lowly, but the efficiency is extremely low. The semi-automatic tapping equipment is adopted, namely, tapping operation of four corners of the square valve cover can be automatically completed through program setting of a tap, but the equipment input cost is high, manual feeding and discharging of the square valve cover are required, and the machining efficiency is still low, so that an automatic tapping device for precision valve castings is provided for solving the problems. Disclosure of Invention In view of the above, the invention provides an automatic tapping device for precision valve castings, which aims to solve the problems that the traditional tapping device needs manual auxiliary operation, so that the operation is troublesome, automatic running operation cannot be realized, and the production efficiency is low. In order to achieve the above purpose, the present invention provides the following technical solutions: an automated tapping device for precision valve castings, comprising: the support base is of a hollow structure; The rotary table is rotatably connected to the top of the supporting base, and a first driving mechanism for driving the rotary table to intermittently rotate is arranged in the supporting base; the fixed ring is rotationally sleeved on the outer side of the rotary table and is fixedly connected with the outer wall of the supporting base through a plurality of first L-shaped rods; the positioning pieces are annularly and equidistantly arranged at the top of the rotary table and used for positioning the valve castings, and the valve castings can be rotationally conveyed through rotation of the rotary table so as to finish flow production processing; The plurality of support components are circularly and equidistantly arranged at the bottom of the rotary table and respectively correspond to the plurality of positioning pieces up and down, and can drive the corresponding positioning pieces to rotate for a certain angle in the synchronous rotary movement process of the support components along with the rotary table so as to automatically adjust the processing position of the valve casting; the two vertical plates are fixedly connected to the top of the fixed ring; the mounting plates are sleeved on the two vertical plates in a sliding manner, and the vertical plates are provided with second driving mechanisms for driving the mounting plates to move up and down; the tapping mechanisms are arranged at the bottoms of the mounting plates at equal intervals in an arc shape and are respectively used for tapping different positions of valve castings, and a third driving mechanism for driving the tapping mechanisms to work simultaneously is arranged on the mounting plates. Further, the first driving mechanism comprises a fixed plate fixedly connected inside the support base, a first motor is fixedly arranged at the top of the fixed plate, and an output shaft of the first motor rotates to penetrate through the top of the support base and is fixedly connected with the bottom of the rotary table. Further, the locating piece comprises a locating block, and a plurality of through holes which are embedded with the corresponding locating block and matched with the locating block are formed in the top of the rotary table at equal intervals in an annular mode. Further, square holes matched with the valve castings in a positioning mode are formed in the tops of the positioning blocks. Further, the supporting component comprises a fluted disc which is connected to the bottom of the rotary table in a ro