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CN-122008504-A - Precise demolding injection molding device for nylon retainer

CN122008504ACN 122008504 ACN122008504 ACN 122008504ACN-122008504-A

Abstract

The invention relates to the technical field of retainer injection molding, and discloses a precise demolding injection molding device for a nylon retainer, which comprises an outer mold unit, wherein the outer mold unit comprises a mounting ring and a built-in ring arranged on an inner ring of the mounting ring, a mounting groove is formed in the mounting ring, a mold mechanism is arranged in the mounting groove and comprises a core mold and a side mold, the mold mechanism further comprises a telescopic component, the telescopic component drives the side mold to move so as to be mutually spliced, the inner mold unit comprises a mold column, a rail mechanism is arranged at the bottom of the mold column, the rail mechanism comprises a stop lever and a driving component, the mold column moves downwards and forms a mold cavity together with the built-in ring, the core mold and the side mold, and the mold cavity is subjected to injection molding so as to form the retainer. According to the invention, through the synergistic effect of the telescopic component, the elastic moving component and the resetting component, the linkage of the core die withdrawing and the side die splicing is realized, the contact gap between the side die and the nylon retainer is greatly reduced, the deformation or scratch of the retainer during demolding is avoided, and the product precision is improved.

Inventors

  • HU CUIYUN
  • WU BOJIE
  • RUAN SHIHUA
  • HAN WEIDONG

Assignees

  • 苏州汇智精保持架科技有限公司

Dates

Publication Date
20260512
Application Date
20260203

Claims (10)

  1. 1. A precision demolding injection molding device for nylon retainers is characterized by comprising, The outer die unit comprises a mounting ring (103) and a built-in ring (105) arranged on the inner ring of the mounting ring (103), a mounting groove (104) is formed in the mounting ring (103), a die mechanism is arranged in the mounting groove (104), the die mechanism comprises a core die (200) and a side die (202), and the die mechanism further comprises a telescopic component, and the telescopic component drives the side die (202) to move so as to be mutually spliced; The internal mold unit comprises a mold column (300), wherein a transverse blocking mechanism is arranged at the bottom of the mold column (300) and comprises a blocking rod (307) and a driving assembly, and the driving assembly drives the blocking rod (307) to extend out so as to hook the retainer; The mold post (300) moves downward and forms a mold cavity with the built-in ring (105), the core mold (200) and the side mold (202), and the mold cavity is injection molded to form the nylon retainer.
  2. 2. The precise demolding injection molding device for nylon retainers according to claim 1, wherein the telescoping assembly comprises a connecting block (205), fixing plates (206) are fixedly installed on two sides of the connecting block (205), a sliding rod (207) is fixedly installed between the two fixing plates (206), a supporting plate (209) is installed in the middle of the sliding rod (207), the telescoping assembly further comprises a connecting plate (204), the connecting plate (204) is movably sleeved on the sliding rod (207), a connecting rod (203) is fixedly installed on one side of the connecting plate (204), and the connecting rod (203) is fixedly connected with a side mold (202).
  3. 3. The precise demolding injection molding device for nylon retainers according to claim 2, wherein an insert rod (201) is fixedly installed on one side of the core mold (200), the mold mechanism further comprises an elastic moving assembly, the elastic moving assembly comprises a sleeve (211) movably sleeved on the insert rod (201), pull rods (210) are rotatably installed on two sides of the sleeve (211), one ends of the pull rods (210) are rotatably connected with the connecting plates (204), protruding blocks (212) are fixedly installed on two sides of the insert rod (201), the insert rod (201) abuts against the sleeve (211) through the protruding blocks (212) when moving, and the elastic moving assembly further comprises a first spring (208) movably sleeved on the slide rod (207).
  4. 4. A precision demolding injection molding device for nylon holders according to claim 3, characterized in that the mold mechanism further comprises a reset assembly, the reset assembly comprises a supporting block (215), the supporting block (215) is fixedly installed on the inner wall of the installation groove (104) of the installation ring (103), a supporting rod (213) is movably inserted on one side of the supporting block (215), the other end of the supporting rod (213) is fixedly installed on the connecting block (205), a second spring (214) is movably sleeved on the supporting rod (213), and the inserting rod (201) movably penetrates through the supporting block (215) and extends to the other side.
  5. 5. The precise demolding injection molding device for nylon retainers according to claim 4, wherein the outer mold unit further comprises a first guiding mechanism, the first guiding mechanism comprises a turntable (217), the turntable (217) is rotatably mounted on the outer side of the mounting ring (103), a first guiding groove (218) is formed in the turntable (217), a first guiding rod (216) is fixedly mounted at one end of the inserting rod (201), the first guiding rod (216) is matched with the first guiding groove (218), a fixing block (102) is fixedly mounted on the outer side of the mounting ring (103), and a fixing ring (101) is fixedly mounted on the outer side of the fixing block (102).
  6. 6. The precise demolding injection molding device for nylon retainers according to claim 5, wherein a base (100) is installed at the bottom of the fixing ring (101), a pushing mechanism is arranged on the base (100) and is used for driving a turntable (217) to rotate, the driving mechanism comprises a first telescopic element (220) installed at the top of the base (100), a connecting frame (219) is rotatably installed at the output end of the first telescopic element (220), and one end of the connecting frame (219) is rotatably connected with the turntable (217).
  7. 7. The precise demolding injection molding device for nylon retainers according to claim 1, wherein a second guiding mechanism is arranged inside the mold column (300), the second guiding mechanism comprises an inner rotating column (301) rotatably mounted on the mold column (300), a second guiding groove (305) is formed in the bottom of the inner rotating column (301), a second guiding rod (306) is adaptively connected in the second guiding groove (305), the second guiding rod (306) is fixedly connected with one end of a blocking rod (307), the blocking rod (307) movably penetrates through the mold column (300), and the movement of the blocking rod (307) is controlled through the second guiding rod (306) and the second guiding groove (305) when the inner rotating column (301) rotates.
  8. 8. The precise demolding injection molding device for the nylon retainer according to claim 1, wherein the driving assembly comprises a motor (304) fixedly installed on one side of a mold column (300), a second gear (303) is fixedly installed at the output end of the motor (304), a first gear (302) is connected to one side of the second gear (303) in a meshed manner, and the first gear (302) is fixedly connected with an inner column (301); and a fixing piece (315) is fixedly arranged on the side face of the die column (300), and a third telescopic element (316) is arranged at the top of the fixing piece (315).
  9. 9. The precise demolding injection molding device for the nylon retainer according to claim 1, wherein the inner mold unit further comprises a pushing mechanism, the pushing mechanism comprises a push rod (309) movably inserted on the mold column (300), a third guide rod (311) is fixedly arranged at the top of the push rod (309), an annular groove (308) is formed in the mold column (300), a third spring (310) is movably sleeved on the part, located in the annular groove (308), of the push rod (309), a sleeve ring (312) is movably sleeved on the outer side of the annular groove (308), a third guide groove (313) is formed in the sleeve ring (312), the third guide groove (313) is matched with the third guide rod (311), a second telescopic element (314) is arranged on the side face of the mold column (300), and the output end of the second telescopic element (314) is fixedly connected with the sleeve ring (312).
  10. 10. The precision demolding injection molding device for nylon holders according to claim 1, further comprising a conveyor belt (400), wherein a fourth telescopic element (401) is mounted on one side of the conveyor belt (400), and the fourth telescopic element (401) drives the conveyor belt (400) to move between the outer mold unit and the inner mold unit to convey the holders.

Description

Precise demolding injection molding device for nylon retainer Technical Field The invention belongs to the technical field of retainer injection molding, and particularly relates to a precise demolding injection molding device for a nylon retainer. Background The nylon retainer is light, wear-resistant and corrosion-resistant, and is widely applied to the field of precision machinery such as bearings, and the molding quality of the nylon retainer directly influences the running precision and the service life of the bearings. At present, nylon retainers are produced by an injection molding process, but the existing injection molding demolding device has the technical defects that firstly, the opening and closing of a mold is not smooth in connection with demolding actions, the separation of a core mold and a side mold is asynchronous, the clamping of the mold, deformation or surface scratch of the retainer are easy to cause, the precision machining requirement cannot be met, secondly, the design of a demolding grabbing mechanism is unreasonable, the retainer is unstable to grab, the retainer is easy to fall off, collide with and the like, the qualification rate of products is influenced, thirdly, an efficient automatic conveying and resetting mechanism is lacking, the manual participation is high, the production efficiency is low, the large-scale production is difficult to adapt, and thirdly, the moving and guiding precision of mold components is insufficient, the molding consistency of the cavity is poor, the resetting of the components depends on a complex driving structure, the equipment failure probability is high, and the maintenance cost is high. In addition, the existing device is designed for common plastic parts, the characteristics of strong toughness and easiness in adhesion with a die after molding of nylon materials are not fully considered, and the demolding difficulty is further increased. The present invention has been made in view of this. Disclosure of Invention In order to solve the technical problems, the invention provides the precise demolding injection molding device for the nylon retainer, the core mold is withdrawn and combined with the side mold by the synergistic effect of the telescopic component, the elastic moving component and the resetting component, the contact gap between the side mold and the nylon retainer is greatly reduced, deformation or scratch of the retainer during demolding is avoided, the product precision is improved, meanwhile, the retainer is stably grasped and pushed by the cooperation of a stop lever and a push rod, the automatic conveying of a conveyer belt is matched, the manual intervention is reduced, the demolding efficiency and the production continuity are improved, and the large-scale production requirement is adapted. The technical scheme adopted for solving the technical problems is as follows: a precision demolding and injection molding device for nylon retainers comprises, The outer mold unit comprises a mounting ring and a built-in ring arranged on the inner ring of the mounting ring, a mounting groove is formed in the mounting ring, a mold mechanism is arranged in the mounting groove, the mold mechanism comprises a core mold and a side mold, and the mold mechanism further comprises a telescopic assembly, and the telescopic assembly drives the side mold to move so as to be mutually spliced; The internal mold unit comprises a mold column, wherein a rail mechanism is arranged at the bottom of the mold column and comprises a stop lever and a driving assembly, and the driving assembly drives the stop lever to extend out to hook the retainer; the mold column moves downwards to form a mold cavity together with the built-in ring, the core mold and the side mold, and the mold cavity is subjected to injection molding to form the nylon retainer. As a preferred implementation mode of the invention, the telescopic component comprises a connecting block, two sides of the connecting block are fixedly provided with fixing plates, a sliding rod is fixedly arranged between the two fixing plates, a supporting plate is arranged in the middle of the sliding rod, the telescopic component further comprises a connecting plate, the connecting plate is movably sleeved on the sliding rod, one side of the connecting plate is fixedly provided with a connecting rod, and the connecting rod is fixedly connected with the side die. As a preferred implementation mode of the invention, the insert rod is fixedly arranged on one side of the core mould, the mould mechanism further comprises an elastic moving component, the elastic moving component comprises a sleeve movably sleeved on the insert rod, pull rods are rotatably arranged on two sides of the sleeve, one ends of the pull rods are rotatably connected with the connecting plates, protruding blocks are fixedly arranged on two sides of the insert rod, the insert rod abuts against the sleeve through the protruding blocks when movi