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CN-122008496-A - Center feeding die

CN122008496ACN 122008496 ACN122008496 ACN 122008496ACN-122008496-A

Abstract

The application discloses a die with center feeding, which comprises a rear die, a front die, a cavity mechanism, a core mechanism, a side core pulling mechanism and a diversion cone mechanism, wherein a die gate penetrating the rear die and the cavity mechanism and used for inserting the diversion cone mechanism is arranged on the rear die, and the die gate is positioned at the middle position of the rear die; the application realizes central feeding by utilizing the mold gate at the middle position of the rear mold and matching with the diversion cone mechanism, so that fluid materials can be uniformly diffused and filled from the center of the mold cavity to the peripheral edges, thereby shortening the longest flow path of melt reaching all positions, improving the filling efficiency of injection molding, ensuring that the radiation heat distribution in the mold is more uniform and symmetrical, reducing the thermal stress and the product deformation caused by temperature difference, ensuring that the overall size of the mold in the length-width direction is more compact and small, and saving the use amount of mold steel and the installation space of a production line.

Inventors

  • ZHOU LINGZHONG
  • YU ZHENG
  • WANG LONGFEI
  • CAI FEIBING

Assignees

  • 上海普锐赛司实业有限公司

Dates

Publication Date
20260512
Application Date
20260330

Claims (10)

  1. 1. The utility model provides a mould of center feeding, its characterized in that includes back mould (1), with front mould (2) that back mould (1) corresponds the setting, with die cavity mechanism (3) that back mould (1) are connected, with core mechanism (4) that front mould (2) are connected, with front mould (2) are connected and are located side core mechanism (5) of core mechanism (4) one side, and with guide cone mechanism (6) that core mechanism (4) intermediate position department is connected, be equipped with on back mould (1) run through back mould (1) with die cavity mechanism (3) and be used for supplying guide cone mechanism (6) insert mould runner (7), mould runner (7) are located rear mould (1) intermediate position department.
  2. 2. The center-feeding mold according to claim 1, wherein the cavity mechanism (3) and the core mechanism (4) are surrounded to form a mold forming cavity (8), a first slag ladle groove (9) which is positioned on the periphery of the core mechanism (4) and is tightly attached to the core mechanism (4) is formed in the front mold (2), a second slag ladle groove (10) which is positioned on the periphery of the cavity mechanism (3) and is correspondingly arranged with the first slag ladle groove (9) is formed in the rear mold (1), and the first slag ladle groove (9) and the second slag ladle groove (10) are surrounded to form a waste collection slag ladle (11) which is communicated with the mold forming cavity (8).
  3. 3. The center-feed die according to claim 2, wherein the front die (2) is further provided with a first discharge chute (12) communicated with the first slag ladle groove (9), the rear die (1) is provided with a second discharge chute (13) communicated with the second slag ladle groove (10) and correspondingly arranged with the first discharge chute (12), and the first discharge chute (12) and the second discharge chute (13) are surrounded to form a discharge pipeline (14) communicated with the waste collection slag ladle (11).
  4. 4. A center-feed die according to claim 3, wherein the front die (2) is provided with first exhaust mechanisms (15) respectively connected to both sides of the front die (2), and the rear die (1) is provided with second exhaust mechanisms (16) respectively connected to both sides of the rear die (1) and arranged corresponding to the first exhaust mechanisms (15).
  5. 5. The center-feed die of claim 4, wherein the first venting mechanism (15) comprises a first venting base (151) fixedly connected with the front die (2), and a first wavy venting assembly (152) fixedly connected with the first venting base (151), a venting groove (153) communicated with the first discharging groove (12) is arranged on the first venting base (151), and the first wavy venting assembly (152) is positioned at one end of the venting groove (153).
  6. 6. The center-feeding die of claim 5, wherein the first wavy exhaust assembly (152) is provided with an exhaust gap (154), the second exhaust mechanism (16) comprises a second exhaust base (161) fixedly connected with the rear die (1), an air guide flange (162) connected with the second exhaust base (161) and used for being inserted into the exhaust gap (154), and a second wavy exhaust assembly (163) connected with the second exhaust base (161) and used for being meshed with the first wavy exhaust assembly (152), the second exhaust base (161) is provided with an exhaust assembly inserting groove (164) for inserting the first wavy exhaust assembly (152), and the air guide flange (162) and the second wavy exhaust assembly (163) are both positioned in the exhaust assembly inserting groove (164).
  7. 7. The center-feeding mold according to claim 1, wherein the side core-pulling mechanism (5) comprises a side core-pulling base (51) fixedly connected with the front mold (2), a side core-pulling oil cylinder (52) connected with the side core-pulling base (51), a connection guide sliding rail (53) fixedly connected with the front mold (2), and a side core-pulling body (54) connected with the output end of the side core-pulling oil cylinder (52) and movably inserted on the connection guide sliding rail (53) at two sides, wherein the side core-pulling body (54) is positioned at one side of the core mechanism (4).
  8. 8. A central feeding mould according to claim 2, characterized in that the diversion cone mechanism (6) is provided with an inclined diversion slope (61), the diversion cone mechanism (6) is also provided with a feeding guide groove (62) positioned at one side of the inclined diversion slope (61), and the core mechanism (4) is provided with a drainage channel (41) communicated with the feeding guide groove (62).
  9. 9. The center-feeding die according to claim 8, wherein the outer side wall of the rear die (1) is further provided with a pressure adjusting driving mechanism (17), a pressure adjusting push rod (18) connected with the output end of the pressure adjusting driving mechanism (17) and penetrating through the rear die (1), and an outlet pressure detecting mechanism (19) connected with the end of the pressure adjusting push rod (18) and extending into the second slag inclusion groove (10), the outlet pressure detecting mechanism (19) is electrically connected with the pressure adjusting driving mechanism (17), and the inclined diversion slope (61) is provided with an inlet pressure detecting mechanism (20) electrically connected with the pressure adjusting driving mechanism (17).
  10. 10. The center-feed die according to claim 1, wherein the front die (2) is further provided with a spiral cooling water path (21) and a heat-insulating heating oil path (22) positioned on the peripheral side of the spiral cooling water path (21).

Description

Center feeding die Technical Field The application relates to the technical field of mold forming, in particular to a center feeding mold. Background The mainstream products in the existing injection mold market mostly adopt a traditional channel arrangement structure with single-side feeding and single-side discharging. The design of single-side pushing type ensures that the melt has the problems of long flow path and uneven stress in the filling process, easily causes higher temperature at the inlet side and lower temperature at the outlet side, and unbalance of the temperature field in the die, and simultaneously, under the same workpiece processing condition, the die needs to additionally reserve huge arrangement space for a single-side feeding channel, thereby causing the die body to be bulky and huge and limiting the applicability of the multi-cavity die on compact equipment. Disclosure of Invention In order to overcome the defects of low filling efficiency, uneven temperature and huge die size caused by single-side feeding in the prior art, the application provides a die with central feeding. The application provides a die with center feeding, which adopts the following technical scheme: The utility model provides a mould of center feeding, includes the back mould, with the back mould corresponds the front mould that sets up, with the die cavity mechanism that the back mould is connected, with the core mechanism that the front mould is connected, with the front mould is connected and is located the side core mechanism of core mechanism one side, and with the water conservancy diversion awl mechanism that core mechanism intermediate position department is connected, be equipped with on the back mould and run through the back mould with the die cavity mechanism is used for supplying the mould runner that water conservancy diversion awl mechanism inserted is established, the mould runner is located the intermediate position department of back mould. By adopting the technical scheme, the central feeding is realized by utilizing the mold gate matched with the guide cone mechanism at the middle position of the rear mold, so that fluid materials can be uniformly spread and filled from the center of the mold cavity to the peripheral edges, the longest flow path of melt reaching all positions is shortened, the filling efficiency of injection molding is improved, the radiation heat distribution in the mold is more uniform and symmetrical, the thermal stress and the product deformation caused by temperature difference are reduced, the overall size of the mold in the length-width direction is more compact and small due to the design of the central feeding structure, and the consumption of mold steel and the installation space of a production line are saved. The mold comprises a mold body, a mold cavity mechanism, a mold core mechanism, a front mold and a rear mold, wherein the mold cavity mechanism and the mold core mechanism are arranged in a surrounding mode to form a mold forming cavity, a first slag ladle groove which is arranged on the periphery of the mold core mechanism and is tightly attached to the mold core mechanism is arranged on the front mold, a second slag ladle groove which is arranged on the periphery of the mold cavity mechanism and is arranged corresponding to the first slag ladle groove is arranged on the rear mold, and the first slag ladle groove and the second slag ladle groove are arranged in a surrounding mode to form a waste collection slag ladle communicated with the mold forming cavity. Preferably, the front mold is further provided with a first discharging groove communicated with the first slag ladle groove, the rear mold is provided with a second discharging groove communicated with the second slag ladle groove and correspondingly arranged with the first discharging groove, and the first discharging groove and the second discharging groove are enclosed to form a discharging pipeline communicated with the waste collecting slag ladle. By adopting the technical scheme, the waste collection slag ladle formed by splicing the first slag ladle groove and the second slag ladle groove is arranged at the periphery of the core and the periphery of the cavity, and is communicated with the discharge pipeline along the way, when the melt fed from the center flows towards the periphery, the cold material with lower temperature at the forefront end of the flowing front, the surface oxide inclusion and the original gas in the pipeline can be smoothly pushed and contained into the waste collection slag ladle of the periphery, the structural strength reduction and the cold insulation defect caused by the retention of the inferior cold material in the molding cavity of the mold are avoided, the design of the discharge pipeline further ensures the smooth diversion and centralized discharge of the waste, and the internal density and the appearance yield of the molded product are improved. Preferably, the