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CN-224224464-U - Tubular product injection mold cooling structure

CN224224464UCN 224224464 UCN224224464 UCN 224224464UCN-224224464-U

Abstract

The utility model provides a cooling structure of an injection mold for tubular products, which comprises an upper mold core, a lower mold core and a mold core, wherein the upper mold core is abutted with the lower mold core. The center of the lower die core is penetrated with a die core, and the die core penetrates through the lower die core and stretches into a groove arranged on the upper die core. The upper die core, the lower die core and the die core are connected to form a die cavity. The upper die core is provided with a first cooling system, the die core is provided with a second cooling system, the first cooling system is arranged around the periphery of the die cavity, and the second cooling system is arranged along the center of the die core. The first cooling system comprises a first drainage groove and a first flow channel, the first drainage groove is arranged on one side of the upper die core, which is far away from the lower die core, the first flow channel is arranged around the die cavity array, and the first drainage groove is communicated with the first flow channel. According to the utility model, the first cooling system and the second cooling system are used for rapidly cooling the product, so that the product is ensured to shrink uniformly, the product is prevented from warping or deforming, the product quality is improved, and the production efficiency is improved.

Inventors

  • QIU JUNCHENG

Assignees

  • 太仓求精塑模有限公司

Dates

Publication Date
20260512
Application Date
20250701

Claims (7)

  1. 1. A cooling structure of an injection mold for tubular products is characterized by comprising an upper mold core (1), a lower mold core (2) and a mold core (3), wherein the upper mold core (1) is abutted to the lower mold core (2), the mold core (3) penetrates through the center of the lower mold core (2), the mold core (3) penetrates through the lower mold core (2) and stretches into a groove formed in the upper mold core (1), the lower mold core (2) and the mold core (3) are connected to form a mold cavity (4), the upper mold core (1) is provided with a first cooling system (11), the mold core (3) is provided with a second cooling system (31), the first cooling system (11) is arranged around the periphery of the mold cavity (4), the second cooling system (31) is arranged along the center of the mold core (3), the first cooling system (11) comprises a first drainage groove (111) and a first flow channel (112), the first drainage groove (111) is arranged on one side, far away from the lower mold core (2), of the upper mold core (1), the first flow channel (112) is arranged around the first flow channel (112), and the first flow channel (112) is communicated with the first flow channel (112).
  2. 2. The cooling structure of the injection mold for tubular products according to claim 1, wherein the first runner (112) comprises a pipe portion (1121) and a head portion (1122), the pipe portion (1121) is connected with a partition plate (1123) along an axis, the partition plate (1123) divides the pipe portion (1121) into two chambers, and one end of the partition plate (1123) away from the head portion (1122) is arranged flush with the opening of the first drainage groove (111).
  3. 3. The cooling structure of the injection mold for tubular products according to claim 2, wherein the separation plates (1123) are arranged along the radial direction of the mold core (3), and both sides of the separation plates (1123) are respectively abutted against the side walls of the first drainage groove (111).
  4. 4. The cooling structure of the injection mold for tubular products according to claim 1, wherein the second cooling system (31) comprises a first drainage block (311), a middle drainage block (312) and a second drainage block (313), the first drainage block (311), the middle drainage block (312) and the second drainage block (313) are sequentially connected in a cavity formed by the mold core (3) from the upper mold core (1) to the lower mold core (2), one side of the second drainage block (313) far away from the first drainage block (311) is provided with a cover plate (314), the cover plate (314) is in sealing connection with the mold core (3), the cover plate (314) is abutted with the second drainage block (313), the outer side wall of the first drainage block (311) is provided with a first groove (3111), the outer side wall of the middle drainage block (312) is provided with a middle groove (3121), the outer side wall of the second drainage block (313) is provided with a second groove (3131), the first groove (3111), the middle groove (3121) and the second groove (3131) are sequentially connected with the second groove (3131) along a straight line, the second groove (3132) is formed, the middle drainage block (312) is provided with a through hole (3132) and the through hole (3132) is formed, the middle flow groove (3122) is communicated with the middle groove (3121), the cover plate (314) is provided with a liquid inlet hole (3141), the liquid inlet hole (3141) is communicated with the liquid inlet through hole (3132), the cover plate (314) is provided with a liquid outlet hole (3142), one end, far away from the first flow guiding block (311), of the second flow guiding block (313) is provided with a second flow groove (3135), and the second flow groove (3135) is communicated with the liquid outlet hole (3142) and the second groove (3131).
  5. 5. The cooling structure of the injection mold for tubular products according to claim 4, wherein a first runner (3112) is arranged at one end of the first runner (311) far away from the second runner (313), a second through hole (3113) is arranged at the first runner (311), the first runner (3112) communicates the first groove (3111) with the second through hole (3113), a third through hole (3123) is arranged at the middle runner (312), a fourth through hole (3133) is arranged at the second runner (313), the second through hole (3113), the third through hole (3123) and the fourth through hole (3133) are communicated, and the liquid outlet hole (3142) and the fourth through hole (3133) are communicated.
  6. 6. The cooling structure of the injection mold for tubular products according to claim 4, wherein a first middle hole (3114) is formed in the center of the first drainage block (311), a second middle hole (3124) is formed in the center of the middle drainage block (312), a third middle hole (3134) is formed in the center of the second drainage block (313), and the first middle hole (3114), the second middle hole (3124) and the third middle hole (3134) are communicated to form a channel for the ejector pin to pass through.
  7. 7. The cooling structure for injection mold of tubular products according to claim 2, characterized in that a first sealing ring (113) is provided along the outer periphery of the first drainage groove (111).

Description

Tubular product injection mold cooling structure Technical Field The utility model belongs to the technical field of injection molds, and particularly relates to a cooling structure of an injection mold for tubular products. Background The injection molding process can efficiently and accurately manufacture products with complex shapes, and the manufactured products have light weight, low cost and high production efficiency and are commonly used for producing various plastic pipelines and connecting pieces. In the injection molding process, the mold needs to be opened after being cooled and solidified, so that the product has enough strength and shape accuracy. In the existing injection mold, a cooling pipeline is generally arranged on the upper side and the lower side of a mold cavity, cooling water is injected from one side of the mold, the cooling water takes away heat of a product and flows out from the other side of the mold, and the cooling pipeline is far away from the product and has a long heat conduction path. Because heat is concentrated in the core area, the product is cooled from one end to the other end, a temperature gradient is easily formed, shrinkage is inconsistent, and warping or deformation is caused. Therefore, the above-described problems are to be solved. Disclosure of utility model The utility model aims to overcome the defects, and provides the cooling structure of the injection mold for the tubular product, which can synchronously cool the inner side and the outer side of the mold cavity, reduce the warpage and the deformation of the product and improve the quality of the product. In order to achieve the above purpose, the utility model provides a cooling structure of an injection mold for tubular products, which comprises an upper mold core, a lower mold core and a mold core, wherein the upper mold core is abutted with the lower mold core. The center of the lower die core is penetrated with a die core, and the die core penetrates through the lower die core and stretches into a groove arranged on the upper die core. The upper die core, the lower die core and the die core are connected to form a die cavity. The upper die core is provided with a first cooling system, the die core is provided with a second cooling system, the first cooling system is arranged around the periphery of the die cavity, and the second cooling system is arranged along the center of the die core. The first cooling system comprises a first drainage groove and a first flow channel, the first drainage groove is arranged on one side of the upper die core, which is far away from the lower die core, the first flow channel is arranged around the die cavity array, and the first drainage groove is communicated with the first flow channel. The utility model is used for injection molding of tubular products, mold closing is carried out to form a mold cavity during injection molding, molten plastic is injected into the mold cavity, and the mold is separated after pressure maintaining and cooling. In the cooling process, the cooling water is injected into the first cooling system to carry the outside Zhou Reliang of the mold cavity, and the cooling water is injected into the second cooling system to carry the heat of the mold core, so that the product is rapidly cooled, the product is ensured to be uniformly contracted, the product is prevented from warping or deforming, the product quality is improved, and the production efficiency is improved. Further, in the above-described cooling structure for an injection mold for a tubular article, the first flow passage includes a pipe portion and a head portion, the pipe portion is connected with a partition plate along an axis, and the partition plate divides the pipe portion into two chambers. The division board keeps away from head one end and first drainage groove opening flush setting. The division board is with pipe portion into two cavities, and the cooling liquid flows into first drainage groove through the cooling tube that the cope match-plate pattern was equipped with, flows in from the pipe portion cavity of division board one side, and the head that gets into flows into the division board opposite side and flows out, flows in first drainage groove again, then flows in another first runner, flows in from division board one side again, turns to at the head, repeatedly takes away outside the die cavity Zhou Reliang in proper order, makes first runner locate in the heat core district, improves cooling efficiency. Furthermore, in the cooling structure of the injection mold for tubular products, in order to ensure that two sides of the partition plate are separated, the partition plate is arranged along the radial direction of the mold core, and two sides of the partition plate are respectively abutted against the side wall of the first drainage groove. Further, in the above-mentioned tubular product injection mold cooling structure, the second cooling system includes fir