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CN-122008510-A - Integrated molding injection molding equipment for inner barrel of washing machine and demolding method

CN122008510ACN 122008510 ACN122008510 ACN 122008510ACN-122008510-A

Abstract

The invention discloses integrated molding injection molding equipment and a demolding method for an inner cylinder of a washing machine, which relate to the technical field of inner cylinder molding injection molding of the washing machine and comprise an upper die holder and a lower die holder, wherein an injection molding port for inputting materials is formed in the top of the upper die holder, a water inlet pipe and a water outlet pipe are fixedly connected to the outer wall of one side of the upper die holder, a circulating pipe is fixedly connected to one side of the upper die holder, which is far away from the water inlet pipe and the water outlet pipe, a heat dissipation assembly is arranged on the circumferential outer wall of the circulating pipe, an expansion pipe is arranged in the middle of the circulating pipe, the inner diameter of the expansion pipe is larger than the inner diameter of the circulating pipe, a turbulence assembly is arranged in the circulating pipe, and a displacement assembly for adjusting the turbulence effect of the turbulence assembly is arranged in the expansion pipe. The invention can ensure the integrated forming quality of the inner cylinder of the washing machine, reduce the defects of products, improve the production efficiency and reduce the energy waste through efficient heat dissipation, uniform cooling and self-adaptive turbulence adjustment.

Inventors

  • LI HAIFENG

Assignees

  • 合肥舒新环保科技有限公司

Dates

Publication Date
20260512
Application Date
20260413

Claims (10)

  1. 1. The injection molding equipment for the integrated molding of the inner cylinder of the washing machine comprises an upper die holder (1) and a lower die holder (2) and is characterized in that an injection molding port (3) for inputting materials is formed in the top of the upper die holder (1), a water inlet pipe (9) and a water outlet pipe (10) are fixedly connected to the outer wall of one side of the upper die holder (1), and a circulating pipe (4) is fixedly connected to one side, away from the water inlet pipe (9) and the water outlet pipe (10), of the upper die holder (1); A heat radiation component is arranged on the circumferential outer wall of the circulating pipe (4); An expansion pipe (5) is arranged in the middle of the circulating pipe (4), and the inner diameter of the expansion pipe (5) is larger than the inner diameter of the circulating pipe (4); the inside of circulating pipe (4) is provided with vortex subassembly, the inside of expansion pipe (5) is provided with the displacement subassembly that is used for adjusting the vortex effect of vortex subassembly.
  2. 2. The injection molding device for integrally molding an inner cylinder of a washing machine according to claim 1, wherein the heat dissipation assembly comprises heat dissipation fins (6) fixedly connected to the circumferential outer wall of the circulation pipe (4), the heat dissipation fins (6) are spirally distributed on the circumferential outer wall of the circulation pipe (4), and the screw pitch of the heat dissipation fins (6) is gradually increased on the circumferential outer wall of the circulation pipe (4) along the direction away from the expansion pipe (5).
  3. 3. The injection molding device for integrally molding an inner cylinder of a washing machine according to claim 2, wherein the outer wall of the radiating fin (6) is provided with radiating grooves (8) distributed circularly at equal intervals, and the width of the radiating grooves (8) is gradually increased along the direction away from the outer wall of the circulating pipe (4).
  4. 4. The injection molding device for integrally molding an inner cylinder of a washing machine according to claim 3, wherein the inner walls of the two sides of the heat dissipation groove (8) are provided with guide grooves (7) which are equidistantly distributed, and the cross section of the guide grooves (7) is arc-shaped.
  5. 5. The injection molding device for integrally molding an inner cylinder of a washing machine according to claim 4, wherein the turbulence assembly comprises a partition plate (17) fixedly connected to the circumferential inner wall of the circulation pipe (4), the partition plate (17) is vertically staggered in the circulation pipe (4), a diversion gap is formed between the bottom of the partition plate (17) fixedly connected to the upper circumferential inner wall of the circulation pipe (4) and the inner wall of the bottom of the circulation pipe (4), another diversion gap is formed between the top of the partition plate (17) fixedly connected to the lower circumferential inner wall of the circulation pipe (4) and the inner wall of the top of the circulation pipe (4), and the diversion gap and the another diversion gap are in wavy distribution in the diversion trench (7).
  6. 6. The injection molding device for the integrated forming of the inner cylinder of the washing machine according to claim 5, wherein a piston tube (11) is arranged in the expansion tube (5), one end of the piston tube (11) away from the radiating fin (6) is hemispherical, one end of the piston tube (11) is fixedly connected with a connecting column (12), the inner wall of the circumference of the circulating tube (4) is fixedly connected with a through groove (15), one end of the connecting column (12) penetrates through the middle part of the through groove (15), and the outer wall of the through groove (15) is provided with through grooves (15) which are distributed in a circular shape at equal distances.
  7. 7. The injection molding device for integrally molding an inner cylinder of a washing machine according to claim 6, wherein the connecting column (12) is sleeved with a spring (13), and two ends of the spring (13) are fixedly connected to the through groove (15) and one side outer wall of the piston tube (11) respectively.
  8. 8. The injection molding device for integrally molding an inner cylinder of a washing machine according to claim 7, wherein a limiting disc (16) is fixedly connected to one end of the connecting column (12) away from the piston tube (11), and the diameter of the limiting disc (16) is larger than that of the connecting column (12).
  9. 9. The injection molding device for integrally molding an inner cylinder of a washing machine according to claim 8, wherein the displacement assembly comprises a movable column (19) fixedly connected to one end of the piston tube (11), a through hole (21) is formed in one side of the fixed disc (14), one end of the movable column (19) penetrates through the through hole (21), an adjusting hole (18) is formed in one side outer wall of the partition plate (17), adjusting lugs (20) distributed at equal distances are fixedly connected to the circumferential outer wall of the movable column (19), the cross section of each adjusting lug (20) is isosceles trapezoid, and the adjusting lugs (20) are located in the adjusting hole (18).
  10. 10. A method for demolding an injection molding device for integrally molding an inner cylinder of a washing machine, which is applied to the injection molding device for integrally molding an inner cylinder of a washing machine as claimed in claim 9, and is characterized by comprising the following steps: s1, stopping inputting materials into an injection port (3) after an inner cylinder injection molding part of the washing machine is cooled and formed in a mold, and simultaneously closing the cooling medium supply of a water inlet pipe (9); s2, controlling the upper die holder (1) to be separated from the lower die holder (2) so that the die is in an open state, and primarily separating by utilizing the gap between the cooled injection molding piece and the inner wall of the die; S3, slowly pushing the injection molding part from one side of the lower die holder (2) by means of a jacking mechanism preset by equipment, and avoiding product deformation during demolding by matching with the slight cooling effect of residual cooling medium of the circulating pipe (4); And S4, taking out the product and cleaning the die cavity after the injection molding piece is completely separated from the die, and preparing for the next injection molding.

Description

Integrated molding injection molding equipment for inner barrel of washing machine and demolding method Technical Field The invention relates to the technical field of inner barrel molding injection molding of washing machines, in particular to an inner barrel integrated molding injection molding device of a washing machine and a demolding method. Background In the field of production of inner cylinders of washing machines, an integrated molding injection molding process has become a mainstream production mode because of improving the structural stability of products and reducing assembly complexity, but the existing injection molding equipment still has a plurality of technical bottlenecks. The cooling system of traditional equipment adopts single pipeline through-flow cooling medium more, and heat radiation structural design is simple, only relies on ordinary straight fin to carry out heat exchange, leads to heat radiating area limited, heat exchange inefficiency, can't derive a large amount of heats that mould produced in the injection molding process fast, has not only prolonged the shaping cycle of inner tube product, still easily causes the material solidification uneven because of the cooling is untimely, influences product dimensional accuracy and surface quality. Meanwhile, the flowing state of the cooling medium in the pipeline is single, and an effective turbulence design is lacked, so that the temperature difference of the cooling medium in different areas in the pipeline is large, the defects of local deformation, inconsistent wall thickness and the like of products are further aggravated, and the production qualification rate is reduced. In addition, the cooling adjustment mechanism of the existing injection molding equipment is not enough in flexibility, and is difficult to adapt to heat dissipation requirements of different stages in the injection molding process of the inner barrel of the washing machine. The temperature of the mold is high in the initial stage of injection molding, the heat is concentrated, the rapid and efficient heat dissipation is required, and the temperature of the mold is gradually reduced in the later stage of molding, so that the heat dissipation speed is required to be properly slowed down to ensure the uniform release of the internal stress of the product. However, the traditional equipment cannot automatically adjust the cooling intensity and the medium flow rate according to the real-time working conditions such as the temperature of the die, the pressure of the cooling medium and the like, and fixed heat dissipation parameters are often adopted to penetrate through the whole production process, so that heat dissipation in a high-temperature stage is not timely, or energy waste in a low-temperature stage is caused. Meanwhile, the demolding flow of part of equipment is not smooth with a cooling system, products are easy to adhere to the inner wall of a mold after cooling is finished, and the problems of scratch, breakage and the like are easy to occur in the demolding process, so that the production efficiency and the product quality are further restricted. Therefore, there is a need for an injection molding apparatus and a demolding method for integrally molding an inner tub of a washing machine to solve the above problems. Disclosure of Invention The invention aims to solve the defects in the prior art and provides an integrated molding injection molding device and a demolding method for an inner cylinder of a washing machine. The washing machine inner cylinder integrated structure has the advantages that through efficient heat dissipation, uniform cooling and self-adaptive turbulence adjustment, the integrated forming quality of the washing machine inner cylinder is guaranteed, the product defects are reduced, the production efficiency is improved, and the energy waste is reduced. In order to achieve the above purpose, the present invention adopts the following technical scheme: the injection molding equipment comprises an upper die holder and a lower die holder, wherein an injection molding port for inputting materials is formed in the top of the upper die holder, a water inlet pipe and a water outlet pipe are fixedly connected to the outer wall of one side of the upper die holder, and a circulating pipe is fixedly connected to one side, away from the water inlet pipe and the water outlet pipe, of the upper die holder; A heat radiation component is arranged on the circumferential outer wall of the circulating pipe; An expansion pipe is arranged in the middle of the circulating pipe, and the inner diameter of the expansion pipe is larger than that of the circulating pipe; the inside of circulating pipe is provided with vortex subassembly, the inside of expansion pipe is provided with the displacement subassembly that is used for adjusting the vortex effect of vortex subassembly. Through the technical scheme, an integrated cooling system of cooling medium circ