Nozzle air inlet channel of injection molding machine

Abstract

The utility model discloses an injection molding machine nozzle air inlet channel which comprises a pipe body, an air inlet channel is arranged in the pipe body, a connector is embedded in the right side of the pipe body, a threaded layer is arranged on the inner wall of the connector, the diameter of the inner wall of the connector is 15.4 + / -0.2 mm, the right side of the connector is a cambered surface groove, the length of the pipe body is 130.05 + / -0.2 mm, and the diameter of the pipe body is 15.4 + / -0.2 mm. The diameter of the air inlet channel is 8 + / -0.1 mm, the connector is communicated with the air inlet channel through a hollow circular truncated cone, and the total length of the connector and the hollow circular truncated cone is 21.41 + / -0.03 mm. The connector, the pipe body structure, cooling heat dissipation and the like are optimally designed, so that the sealing performance and the cooling effect of the air inlet channel are improved, the injection molding quality and efficiency can be effectively improved, and the requirements of modern injection molding production are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding machine technical field especially relates to a injection molding machine nozzle air inlet. BACKGROUND

[0002] In the injection molding process, the nozzle air inlet is mainly used for injecting gas into the mold cavity, and the flow and filling of the plastic melt are assisted by the pressure of the gas, so that the molding of the plastic product is realized. For example, in the molding of some large and complex plastic products, the injection of gas by the air inlet can effectively avoid the defects such as filling shortage and shrinkage mark of the plastic melt in the mold cavity, and improve the molding quality and precision of the plastic product.

[0003] However, the existing injection molding machine nozzle air inlet has some deficiencies. On the one hand, in the connection structure, the connection between the connecting head and the pipe body of part of the air inlets is not tight and stable enough, and the problem of gas leakage is easy to occur, which affects the normal work of the air inlet, and further leads to unstable quality of the plastic product. Moreover, the size accuracy and surface quality of the connecting head will also affect the flow and injection effect of the gas, and some existing air inlets are difficult to meet the requirements of high-precision injection molding in these aspects.

[0004] On the other hand, in terms of cooling and heat dissipation, a large amount of heat will be generated at the nozzle part during the injection molding process, and the existing air inlet cooling structure is relatively simple, and the cooling effect is not good. If the heat cannot be dissipated in time and effectively, the temperature of the plastic melt will be too high, which will affect its flowability and molding performance, and reduce the quality and production efficiency of the plastic product. For example, some air inlets only rely on natural heat dissipation or simple air cooling method, which cannot meet the needs of high-temperature and high-load injection molding production.

[0005] Therefore, it is necessary to design an injection molding machine nozzle air inlet to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at solving the shortcomings in the prior art, and provides an injection molding machine nozzle air inlet, which is optimized in the structure of the connecting head, the pipe body and the cooling and heat dissipation, improves the sealing performance and cooling effect of the air inlet, effectively improves the quality and efficiency of the injection molding, and meets the needs of modern injection molding production.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] The utility model provides an injection molding machine nozzle air inlet channel, including the pipe body, be equipped with air inlet channel in the pipe body, the right side of pipe body is embedded with the connecting head, the inner wall of connecting head is equipped with thread layer, the inner wall diameter of connecting head is 15.4+0.2mm, the right side of connecting head is the arc slope, the length of pipe body is 130.05+0.2mm, the diameter of air inlet channel is 8+0.1mm, the connecting head and air inlet channel are communicated through hollow circular platform, and the total length of connecting head and hollow circular platform is 21.41+0.03mm.

[0009] Preferably, the outer side of the pipe body is fixedly connected with two fixing blocks, each of the two fixing blocks is provided with a through hole, and the diameter of the two through holes is 6.4±0.1mm.

[0010] Preferably, the pipe body is composed of a main pipe and a branch pipe, the adjacent sides of the main pipe and the branch pipe are fixedly connected with rotating rings, the adjacent sides of the two rotating rings are provided with two annular grooves, each of the annular grooves is provided with a protrusion, the adjacent sides of the two protrusions in the middle are fixedly connected with an inner ring, the adjacent sides of the two protrusions on the outer side are fixedly connected with a tooth ring, the adjacent sides of the inner ring and the tooth ring are fixedly connected with a plurality of heat-conducting plates, each of the heat-conducting plates penetrates through the inner ring, and the two rotating rings, the tooth ring and the inner ring jointly enclose a water storage cavity.

[0011] Preferably, the rotating ring on the upper side is provided with a water pipe, the water pipe is provided with a valve, and one end of the water pipe is in communication with the water storage cavity.

[0012] Preferably, the outer wall of the main pipe is fixedly connected with a mounting block, the mounting block is installed with a driving motor, the output shaft of the driving motor penetrates through the mounting block and is fixedly connected with a rotating rod, the rotating rod is fixedly connected with a rotating gear, and the rotating gear is engaged with the tooth ring.

[0013] Preferably, the inner wall of each of the annular grooves is provided with a sealing ring.

[0014] Compared with the prior art, the device has the following advantages:

[0015] 1. Compared with the prior art, the connecting head, the air inlet channel and the connection therebetween are specially designed to ensure the tightness and stability of the connection, effectively avoid gas leakage, and better control the flow rate of the gas, thereby improving the quality and precision of the plastic product forming and reducing product defects caused by gas leakage.

[0016] 2. Compared with the prior art, the water in the water storage cavity and the heat-conducting plates can more effectively take away the heat generated at the nozzle part during the injection molding process, ensure that the temperature of the plastic melt is within a suitable range, and improve the flowability and forming performance thereof.

[0017] 3. Compared with the prior art, by arranging the driving motor, the rotating gear and the gear ring, the plurality of heat-conducting plates are in a rotating state in the actual working process, which can disturb the water and make the airflow uniformly contact with the heat-conducting plates, thereby improving the cooling effect on the gas. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structure diagram of a nozzle air inlet of an injection molding machine is provided in the utility model.

[0019] Figure 2 A Figure 1 half sectional view;

[0020] Figure 3 A structure diagram of the embodiment 2 of the utility model;

[0021] Figure 4 A Figure 3 blowout diagram of the cooling assembly.

[0022] In the drawing: 1 pipe body, 2 air inlet channel, 3 connecting head, 4 fixed block, 5 through hole, 6 mounting block, 7 driving motor, 8 rotating rod, 9 rotating gear, 10 rotating ring, 11 water pipe, 12 gear ring, 13 inner ring, 14 protruding block, 15 heat-conducting plate, 16 annular groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0024] Embodiment 1

[0025] Referring to Figures 1-2 , a nozzle air inlet of an injection molding machine comprises a pipe body 1, the pipe body 1 is internally provided with an air inlet channel 2, the right side of the pipe body 1 is embedded with a connecting head 3, the inner wall of the connecting head 3 is provided with a threaded layer, the inner wall diameter of the connecting head 3 is 15.4±0.2mm, the right side of the connecting head 3 is an arc surface bevel, the length of the pipe body 1 is 130.05±0.2mm, the diameter of the air inlet channel 2 is 8±0.1mm, the connecting head 3 and the air inlet channel 2 are communicated through a hollow circular table, the total length of the connecting head 3 and the hollow circular table is 21.41±0.03mm, the outer side of the pipe body 1 is fixedly connected with two fixed blocks 4, the two fixed blocks 4 are both provided with through holes 5, the diameter of the two through holes 5 is 6.4±0.1mm, the included angle of the side of the hollow circular table is 120±0.1°, and the through holes 5 are arranged to facilitate the installation of the air inlet in a suitable position by using bolts.

[0026] Embodiment 2

[0027] With reference to Figures 3-4 The difference between the embodiment and embodiment 1 is that the pipe body 1 is composed of a main pipe and a branch pipe, the adjacent sides of the main pipe and the branch pipe are fixedly connected with rotating rings 10, the adjacent sides of the two rotating rings 10 are provided with two annular grooves 16, each annular groove 16 is provided with a protrusion 14, the adjacent sides of the two protrusions 14 in the middle are fixedly connected with an inner ring 13, the adjacent sides of the two protrusions 14 on the outer side are fixedly connected with a tooth ring 12, the adjacent sides of the inner ring 13 and the tooth ring 12 are fixedly connected with a plurality of heat-conducting plates 15, each heat-conducting plate 15 penetrates the inner ring 13, the two rotating rings 10, the tooth ring 12 and the inner ring 13 jointly enclose a water storage cavity, the rotating ring 10 on the upper side is provided with a water pipe 11, the water pipe 11 is provided with a valve, one end of the water pipe 11 is communicated with the water storage cavity, the water storage cavity is filled with low-temperature water, and the water can be replaced through the water pipe 11 and the valve.

[0028] The outer wall of the main pipe is fixedly connected with a mounting block 6, the mounting block 6 is installed with a driving motor 7, the output shaft of the driving motor 7 penetrates the mounting block 6 and is fixedly connected with a rotating rod 8, the rotating rod 8 is fixedly connected with a rotating gear 9, the rotating gear 9 is engaged with the tooth ring 12, the inner wall of each annular groove 16 is provided with a sealing ring, and the sealing property of the water storage cavity is ensured when the tooth ring 12 and the inner ring 13 rotate.

[0029] In the embodiment, in the working process of the air inlet pipe, the water in the water storage cavity and the gas in the air inlet channel 2 can exchange heat through the plurality of heat-conducting plates 15, so that the gas in the air inlet channel 2 is cooled, and the operation of the driving motor 7 drives the rotating gear 9 to rotate, the rotating gear 9 is engaged with the tooth ring 12, so that the tooth ring 12, the inner ring 13 and the plurality of heat-conducting plates 15 are driven to rotate, the water in the water storage cavity is disturbed, and the plurality of heat-conducting plates 15 are uniformly contacted with the gas in the air inlet channel 2.

[0030] The above only describes a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the technical field according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model makes equivalent replacement or change, which should be covered in the protection scope of the utility model.

Claims

1. An injection molding machine nozzle inlet channel comprising a tube (1), characterized in that: The pipe body (1) is internally provided with an air inlet channel (2), and the right side of the pipe body (1) is embedded with a connecting head (3), the inner wall of the connecting head (3) is provided with a threaded layer, the inner wall diameter of the connecting head (3) is 15.4±0.2mm, the right side of the connecting head (3) is an arc surface bevel, the length of the pipe body (1) is 130.05±0.2mm, the diameter of the air inlet channel (2) is 8±0.1mm, the connecting head (3) and the air inlet channel (2) are communicated through a hollow circular table, and the total length of the connecting head (3) and the hollow circular table is 21.41±0.03mm.

2. An injection molding machine nozzle gas inlet passage according to claim 1 wherein: The outer side of the pipe body (1) is fixedly connected with two fixed blocks (4), and the two fixed blocks (4) are both provided with through holes (5), and the diameter of the two through holes (5) is 6.4±0.1mm.

3. An injection molding machine nozzle gas inlet passage according to claim 1 wherein: The pipe body (1) is composed of a main pipe and a branch pipe, the adjacent sides of the main pipe and the branch pipe are both fixedly connected with rotating rings (10), the adjacent sides of the two rotating rings (10) are both provided with two annular grooves (16), each annular groove (16) is provided with a protruding block (14), the adjacent sides of the two protruding blocks (14) in the middle are fixedly connected with an inner ring (13), the adjacent sides of the two protruding blocks (14) on the outer side are fixedly connected with a tooth ring (12), the adjacent sides of the inner ring (13) and the tooth ring (12) are fixedly connected with a plurality of heat-conducting plates (15), each heat-conducting plate (15) penetrates through the inner ring (13), and the two rotating rings (10), the tooth ring (12) and the inner ring (13) jointly form a water storage cavity.

4. An injection molding machine nozzle gas inlet passage according to claim 3 wherein: The rotating ring (10) located on the upper side is provided with a water pipe (11), the water pipe (11) is provided with a valve, and one end of the water pipe (11) is communicated with the water storage cavity.

5. An injection molding machine nozzle gas inlet passage according to claim 3 wherein: The outer wall of the main pipe is fixedly connected with a mounting block (6), the mounting block (6) is installed with a driving motor (7), the output shaft of the driving motor (7) penetrates through the mounting block (6) and is fixedly connected with a rotating rod (8), the rotating rod (8) is fixedly connected with a rotating gear (9), and the rotating gear (9) is engaged with the tooth ring (12).

6. An injection molding machine nozzle gas inlet passage according to claim 3 wherein: The inner walls of the plurality of annular grooves (16) are provided with sealing rings.

Images