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CN-121973382-A - Plastic injection molding device with controllable fluid plastic discharging speed

CN121973382ACN 121973382 ACN121973382 ACN 121973382ACN-121973382-A

Abstract

The invention discloses a plastic injection molding device with controllable fluid plastic discharging speed, which belongs to the technical field of injection molding and comprises an injection molding structure, a power output structure and a self-adaptive displacement assembly, wherein the injection molding structure, the power output structure and the self-adaptive displacement assembly are assembled on the same bearing foundation, the power output structure is in transmission fit with the injection molding structure to provide feeding power, and the self-adaptive displacement assembly is respectively linked with the injection molding structure and the power output structure and is used for controlling the transmission on-off of the power output structure and the injection molding structure. According to the self-adaptive feeding design of the power output structure, the driving motor is continuously standby after the cavity is filled, so that the cavity generated by cooling shrinkage of the fluid plastic can be filled in time, the defect of shortage of the material is avoided, the self-adaptive displacement assembly realizes synchronous linkage of die assembly and material breaking, feeding is stopped immediately when the die is separated, overflow of the excess material and flashing of the product are avoided, the appearance of the product is ensured to be regular, and the rejection rate is remarkably reduced.

Inventors

  • HOU WEIWEI
  • LIU YUSHUAI
  • YU HUI

Assignees

  • 苏州豫珺伟电子科技有限公司

Dates

Publication Date
20260505
Application Date
20260317

Claims (10)

  1. 1. The plastic injection molding device with the controllable fluid plastic discharging speed is characterized by comprising an injection molding structure (1), a power output structure (2) and a self-adaptive displacement assembly (3), wherein the injection molding structure (1), the power output structure (2) and the self-adaptive displacement assembly (3) are assembled on the same bearing foundation, the power output structure (2) is in transmission fit with the injection molding structure (1) to provide feeding power, and the self-adaptive displacement assembly (3) is respectively in linkage with the injection molding structure (1) and the power output structure (2) and is used for controlling transmission on-off of the power output structure (2) and the injection molding structure (1).
  2. 2. The plastic injection molding device with the controllable fluid plastic discharging speed is characterized in that the injection molding structure (1) comprises a placing base (101), a feeding auger (102), a charging barrel (103), a fixed die (104), a mounting plate (105), an electric telescopic rod (106), a movable die (107) and a buffer piece (108), the placing base (101) is an integral bearing base, the feeding auger (102), the charging barrel (103), the fixed die (104) and the mounting plate (105) are fixedly arranged on the upper surface of the placing base (101), a discharging hole of the charging barrel (103) penetrates through and is fixedly connected with the feeding auger (102), heating elements are uniformly arranged on the feeding auger (102), the electric telescopic rod (106) is fixedly arranged on the mounting plate (105), the movable die (107) is fixedly connected with the output end of the electric telescopic rod (106) and is matched with the fixed die (104) to form a cavity, and the buffer piece (108) is arranged between the mounting plate (105) and the movable die (107).
  3. 3. The plastic injection molding device with controllable fluid plastic discharging speed according to claim 2, wherein the power output structure (2) comprises a fixed frame (201), a driving motor (202), a driving shaft (203), a fixed clamping block (204), a fixed support I (205), a fixed support II (206), a rotating friction disc (207), a telescopic block (208), a reset spring (209) and a telescopic spring (210), the fixed frame (201) is fixedly arranged on the upper surface of the placing base (101), the driving motor (202) is fixedly arranged in the fixed frame (201), the driving shaft (203) is fixedly connected to the output end of the driving motor (202), the fixed clamping blocks (204) are uniformly distributed and fixedly connected to one end, far away from the driving motor (202), of the driving shaft (203), the fixed support I (205) and the fixed support II (206) are both slidingly connected to the upper surface of the placing base (101) and are positioned in the fixed frame (201), and the rotating friction disc (207) is rotatably connected between the fixed support I (205) and the fixed support II (206) and can be in separable abutting connection with a rotating shaft of the feeding auger (102).
  4. 4. The plastic injection molding device with controllable fluid plastic discharging speed according to claim 3, wherein the telescopic blocks (208) are uniformly distributed and are connected to the inner surface of the rotary friction disc (207) in a sliding mode, the reset springs (209) are arranged between the telescopic blocks (208) and the rotary friction disc (207) and are fixedly connected with the telescopic blocks (208) and the rotary friction disc (207) respectively at two ends, one side, close to the driving shaft (203), of the telescopic blocks (208) is provided with an inclined surface and is matched with the fixed clamping block (204), the telescopic springs (210) are arranged between the first fixed support (205) and the fixed frame (201), and the two ends of the telescopic springs are fixedly connected with the first fixed support (205) and the fixed frame (201) respectively.
  5. 5. The plastic injection molding device with controllable fluid plastic discharging speed according to claim 4, wherein the self-adaptive displacement assembly (3) comprises a first hydraulic cylinder (301), a second hydraulic cylinder (302), a piston rod (303), a connecting spring (304), a conveying pipeline (305) and a butt plate (306), wherein the first hydraulic cylinder (301) and the second hydraulic cylinder (302) are fixedly arranged on the upper surface of the placement base (101), the piston rod (303) is respectively and slidably connected to the first hydraulic cylinder (301) and the second hydraulic cylinder (302), one end of the connecting spring (304) is fixedly connected with the piston rod (303), the other end of the connecting spring is fixedly connected with the first hydraulic cylinder (301) or the second hydraulic cylinder (302), and two ends of the conveying pipeline (305) respectively penetrate through and are fixedly connected with the first hydraulic cylinder (301) and the second hydraulic cylinder (302).
  6. 6. The plastic injection molding device with controllable fluid plastic discharging speed according to claim 5, wherein a piston rod (303) on a first hydraulic cylinder (301) is fixedly connected to the movable mold (107), the piston rod (303) on a second hydraulic cylinder (302) is fixedly connected to a second fixed support (206) through a butt plate (306), and the butt plate (306) penetrates and is slidingly connected with the fixed frame (201).
  7. 7. The plastic injection molding device with controllable fluid plastic discharging speed according to claim 6, wherein the rotary friction disc (207) is abutted with a rotating shaft of the feeding auger (102) under the elastic support of the telescopic spring (210), the fixed clamping block (204) is clamped and driven with the telescopic block (208), and the rotary friction disc (207) is driven to rotate by friction force to drive the feeding auger (102).
  8. 8. The plastic injection molding device with controllable fluid plastic discharging speed according to claim 7, wherein after the cavity of the injection molding structure (1) is filled, the feeding auger (102) stops rotating, the fixed clamping block (204) overcomes the elastic force of the reset spring (209) through the inclined plane of the telescopic block (208), the telescopic block (208) is pushed into the rotary friction disc (207), and the driving motor (202) continuously idles.
  9. 9. The plastic injection molding device with controllable fluid plastic discharging speed according to claim 8, wherein when the movable mold (107) is displaced in a direction away from the fixed mold (104), hydraulic oil in the first hydraulic cylinder (301) is driven to flow into the second hydraulic cylinder (302) through the conveying pipeline (305), a piston rod (303) and the butt plate (306) of the second hydraulic cylinder (302) are pushed to move, and the second fixed support (206) is driven to synchronously displace with the rotary friction disk (207), so that the rotary friction disk (207) is separated from the feeding auger (102).
  10. 10. The plastic injection molding device with controllable fluid plastic discharging speed according to claim 9, wherein the electric telescopic rod (106) can adjust the output thrust and the telescopic stroke, and the buffer piece (108) is an elastic buffer structure and is used for counteracting the instant impact force when the electric telescopic rod (106) is pushed in.

Description

Plastic injection molding device with controllable fluid plastic discharging speed Technical Field The invention belongs to the technical field of injection molding, and particularly relates to a plastic injection molding device with a controllable fluid plastic discharging speed. Background In the field of plastic injection molding, the feeding stability, the equipment protection performance and the production suitability of an injection molding device directly influence the product percent of pass and the production efficiency. The existing injection molding equipment has the common technical pain that firstly, the molding cooperativity of a feeding system and a mold is insufficient, when a mold cavity is filled, a feeding winch Long Yi is damaged by the rotation blocking of a driving motor caused by the fact that the continuous stress cannot be applied to the mold cavity, or a product is defective due to the fact that the feeding cannot be timely supplemented after the mold cavity is stopped, secondly, the mold closing and feeding actions lack of accurate linkage, the feeding system is easy to continuously push fluid plastics when the mold is separated, residual materials overflow and product flash are caused, the waste rate and the cleaning cost are increased, thirdly, the power output is unstable in the mold closing process, the instantaneous impact force is easy to cause the collision deformation of the mold, the precision of the mold cavity is affected, fourthly, the traditional equipment is required to rely on a complex electric control module to realize the start-stop control, the structure is complicated, the failure rate is high, the response delay problem exists, and the high-efficiency continuous production requirement is difficult to adapt. In order to solve the above problems, it is needed to develop an injection molding device with simple structure, strong synergy and reliable protection, and through the self-adaptive design of the mechanical structure, the accurate linkage of feeding, die assembly and material supplementing is realized, the production efficiency and the product quality are both considered, and the equipment maintenance cost is reduced. Disclosure of Invention Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the plastic injection molding device with controllable fluid plastic discharging speed, which effectively solves the problems in the current market. The invention provides a plastic injection molding device with controllable fluid plastic discharging speed, which comprises an injection molding structure, a power output structure and a self-adaptive displacement component, wherein the injection molding structure, the power output structure and the self-adaptive displacement component are assembled on the same bearing foundation, the power output structure is in transmission fit with the injection molding structure to provide feeding power, and the self-adaptive displacement component is respectively linked with the injection molding structure and the power output structure and is used for controlling the transmission on-off of the power output structure and the injection molding structure. The injection molding structure comprises a placing base, a feeding auger, a charging barrel, a fixed die, a mounting plate, an electric telescopic rod, a movable die and a buffer piece, wherein the placing base is an integral bearing base, the feeding auger, the charging barrel, the fixed die and the mounting plate are fixedly mounted on the upper surface of the placing base, a discharge hole of the charging barrel penetrates through and is fixedly connected with the feeding auger, heating elements are uniformly arranged on the feeding auger, the electric telescopic rod is fixedly mounted on the mounting plate, the movable die is fixedly connected to the output end of the electric telescopic rod and is matched with the fixed die to form a cavity, and the buffer piece is arranged between the mounting plate and the movable die. The power output structure comprises a fixed frame, a driving motor, a driving shaft, fixed clamping blocks, a first fixed support, a second fixed support, a rotating friction disc, a telescopic block, a reset spring and a telescopic spring, wherein the fixed frame is fixedly arranged on the upper surface of a placing base, the driving motor is fixed in the fixed frame, the driving shaft is fixedly connected to the output end of the driving motor, the fixed clamping blocks are uniformly distributed and fixedly connected to one end, far away from the driving motor, of the driving shaft, the first fixed support and the second fixed support are both in sliding connection with the upper surface of the placing base and are positioned in the fixed frame, and the rotating friction disc is rotatably connected between the first fixed support and the second fixed support and is detachably abutted to a rotating shaft of the f