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CN-121973399-A - Vacuum adsorption type ultrathin fan blade injection molding jig

CN121973399ACN 121973399 ACN121973399 ACN 121973399ACN-121973399-A

Abstract

The invention relates to the technical field of injection molding jigs, in particular to a vacuum adsorption type ultrathin fan blade injection molding jig which comprises a supporting plate, wherein a rotary table is rotatably arranged on the supporting plate, a swivel is slidably arranged on the outer part of the rotary table back and forth, a plurality of convex dies which are uniformly distributed in the circumferential direction are fixedly connected to the front side of the swivel, and a driving unit for driving the rotary table to rotate and a guiding unit for driving the swivel to move backwards when the rotary table rotates are arranged on the supporting plate. According to the invention, the adsorption holes and the micro-porous film are arranged on the inner wall of the die cavity, and negative pressure is generated by the adsorption holes and the micro-porous film to adsorb the fan blade in the cooling and forming process of the fan blade, so that the blade is always attached to one side of the die cavity, which is close to the micro-porous film, the situation of warping during blade forming is avoided, the flatness of the formed fan blade is improved, the adsorption holes and the micro-porous film keep a vacuum adsorption state during die opening, the fan blade is prevented from being pulled during die opening of the die plate of the fixed die, and the bending deformation of the fan blade is avoided.

Inventors

  • WANG MIN
  • LI DONG
  • LIAO LIANJUN

Assignees

  • 东莞市睿智兴宸实业有限公司

Dates

Publication Date
20260505
Application Date
20260409

Claims (8)

  1. 1. Vacuum adsorption formula ultra-thin fan blade tool of moulding plastics, its characterized in that includes: The rotary table comprises a support plate (1), wherein a rotary table (11) is rotatably arranged on the support plate (1), a swivel (12) is slidably arranged on the outside of the rotary table (11) back and forth, a plurality of convex dies (13) which are uniformly distributed in the circumferential direction are fixedly connected to the front side of the swivel (12), and a driving unit (14) for driving the rotary table (11) to rotate and a guiding unit (15) for driving the swivel (12) to move backwards when the rotary table (11) rotates are arranged on the support plate (1); The movable die template (2) is arranged on the front side of the supporting plate (1), a die groove (21) which is in plug-in fit with the male die (13) and is circumferentially and uniformly distributed is formed in the movable die template (2), an adsorption unit (24) is arranged on the movable die template (2), the adsorption unit (24) comprises a plurality of adsorption holes (241) which are formed in the movable die template (2) and are communicated with the die groove (21), a micro-porous membrane (242) is fixedly arranged on the side wall of the die groove (21), and an adsorption assembly (243) for vacuumizing the adsorption holes (241) is arranged in the movable die template (2); and the fixed die plate (3) is arranged at the front side of the movable die plate (2) and matched with the movable die plate.
  2. 2. The vacuum adsorption type ultrathin fan blade injection molding jig as claimed in claim 1, wherein the rotary table (11) is of a double-layer round table structure, the rotary ring (12) is arranged on a step on the front side of the rotary table (11) in a front-back sliding manner, and an elastic telescopic rod (121) is arranged between the rear side of the rotary ring (12) and the step on the rear side of the rotary table (11).
  3. 3. The vacuum adsorption type ultrathin fan blade injection molding jig as claimed in claim 2, wherein the driving unit (14) comprises a gear ring (141) fixedly sleeved on a step at the rear side of the rotary table (11), symmetrically distributed slide ways (142) at the left side and the right side of the rotary table (11) are arranged in the supporting plate (1), racks (143) are vertically slidably arranged in the slide ways (142), the racks (143) are meshed with the gear ring (141), sealing rings (144) for sealing gaps between the racks (143) and the slide ways (142) are arranged at the upper end and the lower end of each rack (143), and air inlet and outlet ports (145) which are in one-to-one correspondence with the slide ways (142) are arranged at the top of the supporting plate (1).
  4. 4. The vacuum adsorption type ultrathin fan blade injection molding jig as claimed in claim 2, wherein the guide unit (15) comprises a plurality of guide grooves (151) which are formed in the inner annular wall of the supporting plate (1) and are uniformly distributed in the circumferential direction, guide blocks (152) which are in one-to-one correspondence with the guide grooves (151) are fixedly connected to the outer annular wall of the rotating ring (12), and the guide blocks (152) are in sliding connection with the corresponding guide grooves (151).
  5. 5. The vacuum adsorption type ultrathin fan blade injection molding jig as claimed in claim 1, wherein the die cavity (21) is in plug-in fit with the male die (13) to form a die cavity for injection molding of the fan blade, the microporous membrane (242) is positioned on the inner wall of the die cavity close to the anticlockwise direction, and one side of the male die (13) close to the clockwise direction is obliquely arranged to be in sliding fit with the die cavity (21).
  6. 6. The vacuum adsorption type ultrathin fan blade injection molding jig as claimed in claim 1, wherein the adsorption component (243) comprises an annular air passage (2431) which is formed in the movable die template (2) and surrounds the outside of the plurality of die grooves (21), a plurality of circumferentially uniformly distributed air dividing passages (2432) are communicated with the inner side of the annular air passage (2431), the air dividing passages (2432) are positioned between two adjacent die grooves (21) and are communicated with corresponding adsorption holes (241), and an air release valve (2433) and a vacuum valve (2434) which are communicated with the annular air passage (2431) are fixedly arranged at the top of the movable die template (2).
  7. 7. The vacuum adsorption type ultrathin fan blade injection molding jig according to claim 1, wherein a through hole (22) is formed in the middle of the movable die template (2), the front side step of the turntable (11) is inserted into the through hole (22) in a front-back sliding mode, and a ring groove (23) for connecting a plurality of die grooves (21) is formed in the front side of the movable die template (2).
  8. 8. The vacuum adsorption type ultrathin fan blade injection molding jig as claimed in claim 7, wherein a first glue injection port (31) is formed in the middle of the fixed die template (3), a plurality of second glue injection ports (32) which are uniformly distributed in the circumferential direction of the first glue injection port (31) are formed in the fixed die template (3), and the rear end of the second glue injection port (32) is communicated with a part of the annular groove (23) located between two adjacent die grooves (21).

Description

Vacuum adsorption type ultrathin fan blade injection molding jig Technical Field The invention relates to the technical field of injection molding jigs, in particular to a vacuum adsorption type ultrathin fan blade injection molding jig. Background The ultrathin fan blade is relatively thin, can realize efficient heat dissipation or ventilation function in a limited space, is an ultrathin fan blade, and can provide effective heat dissipation for heating parts such as chips and the like under the condition of not increasing excessive volume. When the ultrathin fan blade is processed, the structural strength, dynamic balance precision and aerodynamic performance of the blade are ensured while the ultrathin fan blade is extremely thinned (the thickness is generally less than 0.5mm and the partial scene is generally less than 0.1 mm), and deformation, fracture or dimensional deviation in the processing process is avoided. In the process of the ultrathin fan blade, the ultrathin fan blade can be separated from the inner wall of a cavity along with cooling shrinkage of a plastic melt, but the ultrathin fan blade has insufficient supporting property and stability due to thinner wall thickness, is easy to warp in the cooling process, is one of the most common key defects affecting the performance, and is characterized in that a finished product of the blade is bent, distorted or deformed unexpected, so that the dynamic balance of the fan is invalid, the noise is increased, the air quantity is reduced, and even vibration damage during the operation is caused. Disclosure of Invention In order to solve the problems, the invention provides a vacuum adsorption type ultrathin fan blade injection molding jig which comprises a supporting plate, wherein a turntable is rotatably arranged on the supporting plate, a swivel is slidably arranged on the outside of the turntable back and forth, a plurality of convex dies which are uniformly distributed in the circumferential direction are fixedly connected to the front side of the swivel, and a driving unit for driving the turntable to rotate and a guiding unit for driving the swivel to move backwards when the turntable rotates are arranged on the supporting plate. Install the movable mould template in backup pad front side, set up on the movable mould template with the terrace die grafting cooperation and circumference evenly distributed's diaphragm groove, install the adsorption unit on the movable mould template, the adsorption unit is including seting up inside a plurality of absorption holes of movable mould template and with diaphragm groove intercommunication, fixed mounting has the micro-porous membrane on the lateral wall of diaphragm groove, the internally mounted of movable mould template has the absorption subassembly that is used for carrying out the evacuation to the absorption hole. And the fixed die template is arranged at the front side of the movable die template and matched with the movable die template. In one possible implementation mode, the turntable is of a double-layer round table-shaped structure, the swivel is arranged on the step on the front side of the turntable in a front-back sliding mode, and an elastic telescopic rod is arranged between the rear side of the swivel and the step on the rear side of the turntable. In one possible implementation mode, the driving unit comprises a gear ring fixedly sleeved on the step at the rear side of the rotary table, symmetrically distributed slideways at the left side and the right side of the rotary table are arranged in the supporting plate, racks are vertically slidably arranged in the slideways and meshed with the gear ring, sealing rings for sealing gaps between the racks and the slideways are arranged at the upper end and the lower end of the racks, and air inlet and outlet openings which are in one-to-one correspondence with the slideways and are communicated with the top of the supporting plate are arranged at the top of the supporting plate. In one possible implementation mode, the guiding unit comprises a plurality of guiding grooves which are formed in the inner annular wall of the supporting plate and are circumferentially and uniformly distributed, and guiding blocks which are in one-to-one correspondence with the guiding grooves are fixedly connected to the outer annular wall of the swivel and are in sliding connection with the corresponding guiding grooves. In one possible implementation mode, the die cavity is in plug-in fit with the male die to form a die cavity for injection molding of the fan blade, the microporous membrane is positioned on the inner wall of the die cavity close to the anticlockwise direction, and one side of the male die close to the clockwise direction is obliquely arranged in sliding fit with the die cavity. In one possible implementation mode, the adsorption component comprises an annular air passage which is formed inside the movable mould template and surrounds the outsid