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CN-224210418-U - Mould structure for small nozzle eccentric thin wall and climbing injection molding process

CN224210418UCN 224210418 UCN224210418 UCN 224210418UCN-224210418-U

Abstract

The utility model discloses a die structure for small water gap eccentric thin wall and climbing injection molding process, which comprises a base, wherein the middle part of the top end of the base is fixedly provided with a lower die holder, the die structure for small water gap eccentric thin wall and climbing injection molding process can ensure smooth plastic flow and reduce uneven flow by carrying out eccentric design on the die small water gap, avoid defects caused by uneven flow in injection molding process, and is provided with a climbing part in a diversion channel, can ensure that plastic materials smoothly flows in the mould, avoid producing inhomogeneous cooling and bubble's problem because of the velocity of flow change, can carry out multistage injection simultaneously through being provided with a plurality of eccentric little mouth of a river, and then improve injection molding efficiency, produce cold wind through the air-cooler circular cooling tank of air inlet duct introduction to in with cold wind and the second cooling tank, and then be convenient for carry out even cooling treatment to the material in the shaping groove, thereby shorten cooling time, improve work efficiency.

Inventors

  • SHI LEI
  • QIAO CHENGUANG
  • LIU LIPING
  • LAI WEIJIAN
  • Tian Huanyun

Assignees

  • 河源市山德科技有限公司

Dates

Publication Date
20260508
Application Date
20250526

Claims (7)

  1. 1. A die structure for small water gap eccentric thin wall and climbing injection molding process, comprising a base (1), wherein the middle part at base (1) top is fixedly provided with die holder (2), second cooling tank (4) have been seted up to the inside of die holder (2), first annular cooling tank (3) have been seted up at the top of second cooling tank (4) inboard, one side fixed mounting of die holder (2) has air-cooler (7), the fixed intercommunication of the end of giving vent to anger of air-cooler (7) has outlet duct (16), the one end that air-cooler (16) kept away from air-cooler (7) extends to the inside fixed mounting of first annular cooling tank (3) has flow valve (17), four equal fixed mounting in four corners at base (1) top have electric hydraulic stem (11), four the top between electric hydraulic stem (11) is fixedly provided with upper die base (12), a plurality of eccentric small water gap (13) have been seted up on the top of upper die base (12), a plurality of the bottom of eccentric small water gap (13) inboard all has water conservancy diversion passageway (14), a plurality of straight flow channel (141) have a plurality of straight flow portion (141), and one ends of the climbing parts (142) far away from the first direct current parts (141) are respectively provided with a second direct current part (143).
  2. 2. The die structure as set forth in claim 1, wherein the upper die holder (12) is provided with exhaust ports (15) on both sides thereof, and both of the exhaust ports (15) are disposed corresponding to the lower die holder (2).
  3. 3. The die structure of claim 1, wherein the air inlet end of the air cooler (7) is fixedly communicated with an air inlet pipe (8), and one end, far away from the air cooler (7), of the air inlet pipe (8) is fixedly communicated with a filter (9).
  4. 4. The die structure of claim 1, wherein the top of one side of the inner wall of the first annular cooling groove (3) is fixedly communicated with an exhaust pipe (5), and one end of the exhaust pipe (5) far away from the first annular cooling groove (3) extends to the outside and is fixedly provided with a one-way valve (6).
  5. 5. The die structure of claim 1, wherein a forming groove (10) is formed in the middle of the top end of the lower die holder (2), and the first annular cooling groove (3) and the second cooling groove (4) are arranged corresponding to the forming groove (10).
  6. 6. The die structure of claim 1, wherein four sides of the top end of the lower die holder (2) are provided with positioning holes (18), four corners of the bottom end of the upper die holder (12) are fixedly provided with positioning columns (19), and the four positioning holes (18) are respectively connected with the four positioning columns (19) in a clamping mode.
  7. 7. The die structure according to claim 1, wherein the surface of the lower die holder (2) and the surface of the first annular cooling groove (3) are both provided with a wear-resistant layer (20), and the surfaces of both wear-resistant layers (20) are both provided with a smooth coating (21).

Description

Mould structure for small nozzle eccentric thin wall and climbing injection molding process Technical Field The utility model relates to the field of injection molds, in particular to a mold structure used in the small water gap eccentric thin-wall climbing injection molding process. Background An injection mold is a tool for molding plastic, which is a plastic product having a desired shape and size formed by injecting plastic in a molten state into a cavity of a specific shape and solidifying the plastic product by cooling. The existing injection mold is easy to have the problems of uneven flow, incomplete filling, uneven cooling, bubble generation and the like in the processing process, and has only a single small water gap and low cooling speed, so that the working efficiency is low. In order to solve the problems, a mould structure for small nozzle eccentric thin wall and climbing injection molding process is provided. Disclosure of utility model The utility model aims to provide a die structure for small nozzle eccentric thin wall and climbing injection molding process, so as to solve the problems in the prior art. The die structure comprises a base, wherein a lower die holder is fixedly arranged in the middle of the top end of the base, a second cooling groove is formed in the lower die holder, a first annular cooling groove is formed in the top of the inner side of the second cooling groove, an air cooler is fixedly arranged on one side of the lower die holder, an air outlet pipe is fixedly communicated with the air outlet end of the air cooler, a flow valve is fixedly arranged in the air outlet pipe extending to the inner side of the first annular cooling groove from one end of the air cooler, electric hydraulic rods are fixedly arranged at four corners of the top end of the base, an upper die holder is fixedly arranged at the top end of the upper die holder, a plurality of eccentric small water gaps are formed in the top end of the upper die holder, a flow guide channel is formed in the bottom of the inner side of each eccentric small water gap, each flow guide channel comprises a first direct current part, a slope part is formed in the bottom end of each first direct current part, and a second direct current part is formed in one end of each climbing part, which is far away from the first direct current part. Through carrying out eccentric design with mould little mouth of a river, can ensure that plastics flow smoothly and reduce the uneven defect that produces because of flowing in the injection molding process, through being provided with climbing portion in the water conservancy diversion passageway, can ensure that plastics material flows smoothly in the mould, avoid producing inhomogeneous cooling and the problem of bubble because of the velocity of flow change, can carry out multistage injection simultaneously through being provided with a plurality of eccentric little mouths of a river, and then improve injection molding efficiency, the circular telegram through the air-cooler produces cold wind, and with cold wind leading-in first annular cooling tank and the second cooling tank of outlet duct, and then be convenient for carry out even cooling treatment to the material in the shaping tank, thereby shorten cooling time, improve work efficiency. Preferably, the two sides of the upper die holder are provided with the exhaust ports, the two exhaust ports are arranged corresponding to the lower die holder, and the smooth exhaust of gas in the injection molding process can be ensured through the arrangement of the two exhaust ports, so that the generation of bubbles is avoided. Preferably, the air inlet end of the air cooler is fixedly communicated with an air inlet pipe, one end, far away from the air cooler, of the air inlet pipe is fixedly communicated with a filter, and gas entering the air cooler can be filtered through the arrangement of the filter. Preferably, the top of first annular cooling tank inner wall one side is fixed to be linked together and is had the blast pipe, the one end that first annular cooling tank was kept away from to the blast pipe extends to external fixed mounting and has the check valve, is convenient for discharge waste gas through the setting of blast pipe. Preferably, the middle part at die holder top has seted up the shaping groove, first annular cooling tank and second cooling tank correspond the setting with the shaping groove, set up the even cooling treatment of being convenient for to the material through the cooperation of first annular cooling tank and second cooling tank. Preferably, the locating holes are formed in four side sides of the top end of the lower die holder, locating columns are fixedly arranged at four corners of the bottom end of the upper die holder, the four locating holes are respectively connected with the four locating columns in a clamping mode, and the four locating holes are respectively matched with the four locating columns t