CN-122007415-A - Static pressure die for molding ductile cast iron pipe fitting

CN122007415ACN 122007415 ACN122007415 ACN 122007415ACN-122007415-A

Abstract

The invention discloses a ductile iron pipe fitting forming static pressure die, which belongs to the technical field of ductile iron casting and comprises a bottom frame, a guide rail rod, a static pressure cylinder integral die set, a quick-dismantling mechanism of a graphite cast iron pipe die, a vibration demoulding and filling mechanism and a charging mechanism, wherein the guide rail rod is fixed on the bottom frame, the static pressure cylinder integral die set is arranged above the guide rail rod and opposite to the quick-dismantling mechanism, and the quick-dismantling mechanism is rotatably and slidably matched with the guide rail rod and can be conveniently spliced and dismantled through guide rail strips and spiral guide rail strips. The charging mechanism can rotate to align the quick-release mechanism for feeding, and the vibration demolding filling mechanism is arranged on the mounting plate and acts on the quick-release mechanism to assist in material filling and demolding. The mould solves the problems of uneven material filling and rough demoulding by the aid of static pressure and vibration, improves the pipe fitting forming quality and production efficiency, reduces labor intensity and rejection rate, and enhances production flexibility.

Inventors

ZHANG YU
YUAN JINPING
YE LIANSHENG
Chang Baohai
Liu Shuangdong
ZHANG HONGWANG
GAO LIANG
HAN JUNLAI

Assignees

沧州永欣铸造有限公司

Dates

Publication Date: 20260512
Application Date: 20260227

Claims (10)

1. The utility model provides a nodular cast iron pipe fitting shaping static pressure mould, its characterized in that, includes chassis (1), the upper surface both ends of chassis (1) are fixed mounting respectively has two sets of first guide rail pole (102) and two sets of second guide rail pole (103), two sets of first guide rail pole (102) and two sets of the upper surface of second guide rail pole (103) is fixed mounting jointly has the whole module of hydrostatic cylinder (101), the lower surface of the whole module of hydrostatic cylinder (101) is perpendicular relative setting with black cast iron pipe mould quick detach mechanism (3), black cast iron pipe mould quick detach mechanism (3) rotate and install the surface at two sets of go-between (108), and simultaneously sliding fit in the surface of two sets of second guide rail pole (103).
2. The ductile iron pipe fitting forming static pressure die according to claim 1 is characterized in that two groups of connecting rings (108) are symmetrically and fixedly arranged at two sides of a connecting plate (107), the connecting plate (107) is fixedly arranged at one end of a moving block of a linear die set (105), the linear die set (105) is fixedly arranged in a mounting frame (104), the mounting frame (104) is fixedly arranged at one end between the static pressure cylinder integral die set (101) and the underframe (1), so that the linear die set (105) can drive the quick-release mechanism (3) of the ductile iron pipe die set to be inserted into a die cavity of the static pressure cylinder integral die set (101); The outer surfaces of the two groups of first guide rail rods (102) are slidably provided with first mounting plates (106), the first mounting plates (106) are fixedly arranged on the lower surfaces of second mounting plates (111), the second mounting plates (111) are fixedly arranged at one end of the lower half part of a moving block of the linear module (105), two ends of the upper surface of each first mounting plate (106) are fixedly provided with vibration demolding and filling mechanisms (4), and the vibrating ends of the vibration demolding and filling mechanisms (4) are fixedly arranged at the lower end parts of the outer surfaces of the quick-dismantling mechanisms (3) of the graphite cast iron pipe molds; One end of the mounting frame (104) is rotatably provided with a charging mechanism (2), and the charging mechanism (2) can rotate the discharging end of the charging mechanism to the position right above the quick-dismantling mechanism (3) of the graphite cast iron pipe die through rotation so as to realize charging operation.
3. The ductile iron pipe fitting forming static pressure die according to claim 2, characterized in that the graphite cast iron pipe die quick-release mechanism (3) comprises two groups of half ring net pipes (303), one end of the outer surface of each half ring net pipe (303) is fixedly provided with a connecting arm (301), the connecting arms (301) are rotatably arranged on the outer surface of the connecting ring (108), and the connecting arms are in sliding fit with the outer surface of the second guide rail rod (103) through a guide rail ring opening formed in one end of each connecting arm; Guide rail strip mouth (302) has been seted up on the interior anchor ring of the guide rail ring mouth of linking arm (301), guide rail strip mouth (302) slidable mounting is in the surface of sharp guide rail strip (109), sharp guide rail strip (109) fixed mounting is in the surface of second guide rail pole (103), spiral guide rail strip (110) are installed in the butt joint of the lower half of sharp guide rail strip (109), works as linking arm (301) are through guide rail strip mouth (302) follow sharp guide rail strip (109) are perpendicular down to when the surface of spiral guide rail strip (110), can drive two sets of semi-ring net pipes (303) outwards rotatory expansion in step.
4. A ductile iron pipe fitting shaping hydrostatic die according to claim 3, characterized in that the angle of outward expansion of the connecting arm (301) is 70 ° when the connecting arm (301) is driven by the linear die set (105) to slide down along the outer surface of the second rail rod (103) to the bottommost part of the spiral rail strip (110); When the connecting arm (301) slides from the spiral guide rail bar (110) on the outer surface of the second guide rail bar (103) to the outer surface of the straight guide rail bar (109) and is completely spliced, a reflecting surface (113) formed at one end of the second mounting plate (111) is horizontally opposite to a first laser ranging sensor (112), and the first laser ranging sensor (112) is fixedly mounted at one end of the lower half part of the mounting frame (104); When the two groups of semi-ring net pipes (303) assembled into the ring cylinder shape are completely inserted into the static pressure cylinder integral module (101) along with the continuous lifting of the linear module (105), the reflecting surface (113) on the second mounting plate (111) and the second laser ranging sensor (114) are horizontally and oppositely arranged, and the second laser ranging sensor (114) is fixedly mounted at one end of the upper half part of the mounting frame (104).
5. The ductile iron pipe fitting forming static pressure die according to claim 4 is characterized in that two groups of semi-ring net pipes (303) which are completely inserted into the static pressure cylinder integral module (101) can drive a first sealing disk (308) fixedly installed on the outer surface thereof to prop against the lower surface of the static pressure cylinder integral module (101) so as to realize pressure contact sealing; The inner ring surfaces of the two groups of semi-ring net pipes (303) are fixedly provided with static pressure dies (304), the inside of each of the two groups of static pressure dies (304) is provided with a complete die cavity for spheroidal graphite cast iron pipe fittings after being assembled, and the assembled two groups of static pressure dies (304) can be used for inserting an inserting pipe (305) from the lower end, so that the spheroidal graphite cast iron pipe fittings formed later are sleeved on the outer surface of the inserting pipe (305); The insert tube (305) can seal the inner annular surface of the static pressure die (304), a second sealing disc (309) is fixedly arranged on the lower surface of the insert tube (305), and the second sealing disc (309) realizes pressure contact sealing on the lower surface of the static pressure die (304) when the insert tube (305) is inserted into the static pressure die (304); The spliced static pressure die (304) is subjected to top cover sealing through a top cover, and the splicing surfaces of the two groups of semi-ring net pipes (303) and the two groups of static pressure die (304) are respectively provided with corresponding sealing rubber strips and corresponding matching grooves; The lower surface of the second sealing disc (309) is fixedly provided with a threaded rod (306) and a guide post (307), the threaded rod (306) penetrates through a ring (313) in a threaded mode, the ring (313) is rotatably installed on the inner annular surface of the sealing bearing (311), the sealing bearing (311) is fixedly installed in the first mounting plate (106) through the outer annular surface of the sealing bearing, and the guide post (307) penetrates through the upper surface to the lower surface of the second mounting plate (111) in a sliding mode.
6. The ductile iron pipe fitting shaping hydrostatic die according to claim 5, wherein one end of the first mounting plate (106) is fixedly provided with a first motor (310), the outer surface of an output shaft of the first motor (310) and the outer ring part of the upper surface of the annular ring (313) are fixedly provided with synchronous wheels (312), the outer surfaces of the two groups of synchronous wheels (312) are sleeved with synchronous belts, and the annular ring (313) is matched with the synchronous belts in a transmission manner through the synchronous wheels (312) to drive the threaded rod (306) to drive the insertion tube (305) to vertically move up and down.
7. The ductile iron pipe fitting forming static pressure die of claim 6, wherein the signal transmitting ends of the first laser ranging sensor (112) and the second laser ranging sensor (114) are electrically connected with the signal receiving end of a controller, and the control output end of the controller is electrically connected with the electric control ends of the first motor (310) and the linear module (105).
8. The ductile iron pipe fitting forming static pressure die according to claim 2 is characterized in that the vibration demolding and filling mechanism (4) comprises two groups of second motors (401), and the two groups of second motors (401) are fixedly arranged at two ends of the upper surface of the first mounting plate (106); One end of an output shaft of the second motor (401) is connected with an internal thread joint of a tail cover of a vibrating rod (403) through a speed increaser and a flexible shaft, the vibrating rod (403) is arranged in a fastening arc tube (402), and the fastening arc tube (402) is fixedly arranged at the lower end part of the outer surface of the semi-ring net tube (303).
9. The ductile iron pipe fitting forming static pressure die according to claim 2 is characterized in that the charging mechanism (2) comprises a conveying pipe (201), a spiral conveying blade (207) is rotatably installed on the conveying pipe (201), and a shaft rod on the upper surface of the spiral conveying blade (207) penetrates through the upper surface of the conveying pipe (201) in a rotating way and is fixedly connected with an output shaft of a third motor (206); the third motor (206) is fixedly arranged in the mounting frame (205), the mounting frame (205) is fixedly arranged on the upper surface of the conveying pipe (201), a connecting rod (202) is fixedly arranged at one end of the outer surface of the conveying pipe (201), and the connecting rod (202) is rotatably arranged at one end of the outer surface of the mounting frame (104).
10. The ductile iron pipe fitting forming static pressure die according to claim 9 is characterized in that one end of the outer surface of the feed delivery pipe (201) is provided with a discharge pipe (204) in a communicating manner, and the discharge pipe (204) can rotate to a position vertically opposite to the two groups of combined static pressure dies (304) through the rotation of the connecting rod (202); the lower surface of conveying pipeline (201) rotates installs universal wheel (209), the surface lower tip intercommunication of conveying pipeline (201) is installed and is managed (208), the surface one end fixed mounting of conveying pipeline (201) has pull handle (203).

Description

Static pressure die for molding ductile cast iron pipe fitting Technical Field The invention relates to the technical field of nodular cast iron casting, in particular to a nodular cast iron pipe fitting forming static pressure die. Background The spheroidal graphite cast iron has excellent toughness, strength and fatigue resistance due to spherical graphite distribution, and the pipe fitting prepared by the spheroidal graphite cast iron is widely applied to the fields of municipal water supply and drainage, industrial pipeline transportation, infrastructure construction and the like. In the production of ductile cast iron pipe fittings, the casting mold molding quality directly determines the dimensional accuracy, the surface roughness and the internal mechanical property of the pipe fittings, and the mold is used as a core tool, so that the structural rationality and the process suitability are important. In the prior art, if the patent with the publication number of CN215902682U is issued, the problem of variable diameter of a branch pipe is solved, but a conventional casting die structure is adopted, a pressure enhancing and homogenizing mechanism is not designed aiming at the filling characteristics of spheroidal graphite cast iron powder, partial filling is not real in the material filling process, density gradient difference easily occurs, and the defects of porosity, looseness and the like exist in a casting. Meanwhile, after the ductile cast iron pipe fitting is formed, the adhesion force between the ductile cast iron pipe fitting and the inner wall of the die cavity is strong, no targeted demolding auxiliary mechanism is arranged in the prior art, the traditional manual or mechanical pushing demolding is relied on, the labor intensity is high, the demolding efficiency is low, the surface scratch and corner chipping of the pipe fitting are easy to cause, the abrasion of the inner wall of the die is aggravated, and the service life of the die is shortened. Disclosure of Invention The invention aims to provide a nodular cast iron pipe fitting forming static pressure die which is used for solving the problems in the background technology. In order to achieve the above purpose, the present invention provides the following technical solutions: The utility model provides a nodular cast iron pipe fitting shaping static pressure mould, includes the chassis, the upper surface both ends of chassis are fixed mounting respectively has two sets of first guide rail poles and two sets of second guide rail poles, two sets of first guide rail poles and two sets of the upper surface of second guide rail pole is fixed mounting jointly has the whole module of hydrostatic cylinder, the lower surface of the whole module of hydrostatic cylinder is perpendicular relative setting with the quick detach mechanism of black cast iron pipe mould, the quick detach mechanism of black cast iron pipe mould rotates the surface of installing at two sets of go-between, and sliding fit simultaneously in two sets of the surface of second guide rail pole. According to the ductile iron pipe fitting forming static pressure die, the two groups of connecting rings are symmetrically and fixedly arranged on two sides of the connecting plate, the connecting plate is fixedly arranged at one end of the movable block of the linear die set, the linear die set is fixedly arranged in the mounting frame, and the mounting frame is fixedly arranged at one end between the static pressure cylinder integral die set and the underframe, so that the linear die set can drive the quick-release mechanism of the graphite cast iron pipe die to be inserted into the cavity of the static pressure cylinder integral die set; The outer surfaces of the two groups of first guide rail rods are slidably provided with first mounting plates, the first mounting plates are fixedly arranged on the lower surfaces of second mounting plates, the second mounting plates are fixedly arranged at one end of the lower half part of the moving block of the linear module, the two ends of the upper surface of each first mounting plate are fixedly provided with vibration demolding and filling mechanisms, and the vibration ends of the vibration demolding and filling mechanisms are fixedly arranged at the lower end parts of the outer surfaces of the quick-release mechanisms of the graphite cast iron pipe dies; And one end of the mounting frame is rotatably provided with a charging mechanism, and the charging mechanism can rotate the discharging end of the charging mechanism to the position right above the quick-dismantling mechanism of the graphite cast iron pipe die through rotation so as to realize charging operation. The quick-dismantling mechanism of the nodular cast iron pipe fitting forming static pressure die comprises two groups of semi-ring net pipes, wherein one ends of the outer surfaces of the two groups of semi-ring net pipes are fixedly provided with connecting arms, the connectin