CN-224210398-U - Nozzle of double-color injection molding machine

Abstract

The utility model provides a nozzle of a double-color injection molding machine, which relates to the field of injection molding machines and comprises a nozzle barrel, wherein one end of the nozzle barrel is provided with a first runner and a second runner, the interior of the nozzle barrel is provided with a communication cavity communicated with the first runner and the second runner, the other end of the nozzle barrel is provided with an injection hole communicated with the communication cavity, a heat preservation liquid cavity is arranged in the nozzle barrel and is positioned outside the first runner and the second runner, and an electric heating wire is arranged in the heat preservation liquid cavity.

Inventors

• CHEN WEN
• CAI ZICHENG

Assignees

• 昆山金力精工电子模具有限公司

Dates

Publication Date

20260508

Application Date

20250519

Claims (6)

1. 1. A dual color injection molding machine nozzle, comprising: The injection molding device comprises a nozzle barrel (1), wherein a first flow channel (2) and a second flow channel (3) are formed in one end of the nozzle barrel (1), a communication cavity (4) communicated with the first flow channel (2) and the second flow channel (3) is formed in the nozzle barrel (1), and an injection molding hole (5) communicated with the communication cavity (4) is formed in the other end of the nozzle barrel (1); A heat-insulating liquid chamber (6) which is arranged inside the nozzle cylinder (1) and outside the first flow channel (2) and the second flow channel (3), and And the electric heating wire (7) is arranged in the heat preservation liquid cavity (6).
2. 2. The nozzle of a dual-color injection molding machine according to claim 1, wherein the nozzle barrel (1) comprises a barrel body (101), the first flow channel (2), the second flow channel (3), the communication cavity (4) and the heat preservation liquid cavity (6) are all arranged in the barrel body (101), one end of the barrel body (101) is fixedly connected with a discharge nozzle (102), the injection molding hole (5) is arranged in the discharge nozzle (102), one end outer wall of the barrel body (101) far away from the discharge nozzle (102) is uniformly and fixedly connected with an external thread (103), the outer wall of the barrel body (101) is fixedly connected with a nut (104), and the nut (104) is positioned on one side of the external thread (103) close to the discharge nozzle (102).
3. 3. The nozzle of the double-color injection molding machine according to claim 2, wherein a liquid inlet pipe (8) communicated with the heat preservation liquid cavity (6) is fixedly connected to the top of the cylinder (101), the liquid inlet pipe (8) is located at one side of the nut (104) away from the external thread (103), a liquid outlet pipe (9) communicated with the heat preservation liquid cavity (6) is fixedly connected to the bottom of the cylinder (101), and the liquid outlet pipe (9) is located at one side of the discharge nozzle (102).
4. 4. The nozzle of the double-color injection molding machine according to claim 2, wherein the top of the cylinder body (101) is fixedly connected with a hydraulic cylinder (11), an output end of the hydraulic cylinder (11) penetrates through the cylinder body (101) and is fixedly connected with a plugging block (12), and the plugging block (12) is located in the communication cavity (4) and is in sliding connection with the communication cavity.
5. 5. A nozzle of a double-shot injection molding machine according to claim 3, characterized in that a heat-insulating pad (10) is arranged in the heat-insulating liquid cavity (6), the heat-insulating pad (10) is positioned outside the electric heating wire (7), the bottom end of the liquid inlet pipe (8) penetrates through the heat-insulating pad (10), and the top end of the liquid outlet pipe (9) penetrates through the heat-insulating pad (10).
6. 6. The nozzle of the double-color injection molding machine according to claim 4, wherein a storage groove (13) is formed in the barrel (101), an output end of the hydraulic cylinder (11) penetrates through the storage groove (13), a sealing filler (14) is arranged in the storage groove (13), and an inner wall of the sealing filler (14) is in contact with an outer wall of the output end of the hydraulic cylinder (11).

Description

Nozzle of double-color injection molding machine Technical Field The utility model relates to the field of injection molding machines, in particular to a nozzle of a double-color injection molding machine. Background An injection molding machine is an apparatus for injecting a plastic raw material into a mold after heating and melting to mold a plastic product. The device mainly comprises an injection system, a mold closing system, a hydraulic system, an electric control system and a heating and cooling system. The working principle is that molten plastic is conveyed into a die cavity from a charging barrel through a nozzle, and a final product is formed after cooling and shaping. However, in the processing of some products, to achieve a two-color effect, a nozzle of a two-color injection molding machine is used for production. In the related art, processing of a dual-color or multi-material injection molding product mainly depends on a dual-color injection molding machine nozzle, wherein the dual-color injection molding machine nozzle is a nozzle specially used for dual-color or multi-material injection molding, and plastics with two different colors or materials can be injected into the same mold, so that one-time molding of the dual-color or multi-color product is realized, a common dual-color nozzle is generally designed in a switching manner, and a molten material can flow through a control system in the operation process of the common dual-color nozzle, so that dual-color injection molding is completed, but in the process of switching injection molding molten material, another molten material remains in the dual-color injection molding machine nozzle, and the subsequent switching injection molding effect is possibly influenced due to temperature reduction, so that adverse influence on molding quality is possibly generated. Accordingly, there is a need to provide a nozzle for a dual color injection molding machine that solves the above-mentioned problems. Disclosure of utility model In order to solve the technical problem that the subsequent injection effect switching is possibly affected due to temperature drop in the process of switching injection molten materials, the utility model provides a nozzle of a double-color injection molding machine. The utility model provides a nozzle of a double-color injection molding machine, which comprises a nozzle barrel, wherein one end of the nozzle barrel is provided with a first flow passage and a second flow passage, the interior of the nozzle barrel is provided with a communication cavity communicated with the first flow passage and the second flow passage, the other end of the nozzle barrel is provided with an injection molding hole communicated with the communication cavity, a heat preservation liquid cavity is arranged in the nozzle barrel and is positioned outside the first flow passage and the second flow passage, and an electric heating wire is arranged in the heat preservation liquid cavity. Preferably, the nozzle cylinder comprises a cylinder body, the first runner, the second runner, the communication cavity and the heat preservation liquid cavity are all arranged in the cylinder body, one end of the cylinder body is fixedly connected with a discharge nozzle, the injection molding hole is arranged in the discharge nozzle, the cylinder body is far away from one end outer wall of the discharge nozzle and is uniformly and fixedly connected with an external thread, the outer wall of the cylinder body is fixedly connected with a nut, and the nut is positioned on one side of the external thread close to the discharge nozzle. Preferably, the top fixedly connected with of barrel with the feed liquor pipe that the heat preservation liquid chamber is linked together, the feed liquor pipe is located the nut is kept away from one side of external screw thread, the bottom fixedly connected with of barrel with the drain pipe that the heat preservation liquid chamber is linked together, the drain pipe is located one side of discharge gate. Preferably, the top fixedly connected with pneumatic cylinder of barrel, the output of pneumatic cylinder runs through barrel fixedly connected with shutoff piece, the shutoff piece is located the inside in intercommunication chamber, and sliding connection between the two. Preferably, a heat preservation pad is arranged in the heat preservation liquid cavity, the heat preservation pad is positioned outside the electric heating wire, the bottom end of the liquid inlet pipe penetrates through the heat preservation pad, and the top end of the liquid outlet pipe penetrates through the heat preservation pad. Preferably, the storage tank is arranged in the cylinder body, the output end of the hydraulic cylinder penetrates through the storage tank, sealing filler is arranged in the storage tank, and the inner wall of the sealing filler is in contact with the outer wall of the output end of the hydraulic cylinder. Compared with the relat