Hot runner with multiple nozzles

Abstract

The utility model discloses a multi-nozzle hot runner, and particularly relates to the technical field of hot runners, the multi-nozzle hot runner comprises a nozzle body, an injection molding body for conveying materials is arranged at the top of the nozzle body, and a material cavity and a transfer cavity which are communicated with each other are formed in the nozzle body in a penetrating manner; an adjusting assembly used for adjusting opening or closing of the material cavity is arranged in the material cavity. The adjusting assembly comprises two sealing grooves, the two sealing grooves are formed in the spray nozzle body and communicate with the material cavity, and movable columns are arranged in the two sealing grooves. Gas is conveyed into the two mounting barrels through the three-way pipe and the two connecting pipes respectively, then the T-shaped columns are extruded by means of increase of the gas to drive the sealing plates connected with the movable columns to move outwards, and therefore the two sealing plates can be contained in the two sealing grooves respectively, and the purpose that the sealing plates do not block a material cavity is achieved; normal conveying of materials is achieved, and the situation that the circulation efficiency of the materials is affected due to blocking of the adjusting assembly is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hot runners, in particular to a multi-nozzle hot runner. Background Art

[0002] Hot runners are used in injection molds to inject melted plastic particles into the mold cavity. Hot runners are widely used in automobile manufacturing, toy manufacturing, daily necessities manufacturing, etc., bringing convenience to people's lives.

[0003] As shown in the application document of the prior art publication number CN213260798U, it includes a nozzle body, a nozzle core, a body pressing block, an injection molding body and a needle valve assembly. The bottom of the nozzle body is detachably connected with the body pressing block, a plurality of nozzle cores are arranged between the nozzle body and the body pressing block, the upper end of the nozzle body is threadedly connected with the injection molding body, the upper part of the injection molding body is threadedly connected with the needle valve assembly, the injection molding body and the nozzle body are provided with interconnected injection flow channels inside, a plurality of heating rods are arranged inside the nozzle body, two nozzle cores are arranged side by side in the vertical direction between the nozzle body and the body pressing block, a first wedge block is arranged between the two nozzle cores, and a second wedge block is arranged between the nozzle core and the body pressing block. The technical solution has a simple structure, and two nozzle cores of different heights are injected at the same time, which can meet the requirements of injection port molds of different heights, and can avoid the accumulation of plastic particles at the nozzle core outlet when performing injection molding of the rear size mold.

[0004] However, the valve needle in the above technical solution is located inside the injection flow channel, which causes the valve needle to occupy the injection flow space, thereby affecting the flow rate of the material flow. We need a multi-nozzle hot runner. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a multi-head nozzle hot runner, which transports gas to the inside of two mounting cylinders through a three-way pipe and two connecting pipes respectively, and then squeezes the T-column due to the increase of gas, driving the sealing plate connected to the movable column to move outward, so that the two sealing plates can be respectively stored in the two sealing grooves, so as to achieve the purpose of not blocking the material cavity with the sealing plate, realize the normal transportation of materials, avoid the obstruction of the adjustment component and affect the circulation efficiency of the materials, so as to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-nozzle hot runner, comprising a nozzle body, an injection molding body for conveying materials is arranged on the top of the nozzle body, a material cavity and a transfer cavity are connected and opened inside the nozzle body, and an adjustment component for adjusting the opening or closing of the material cavity is arranged inside the material cavity;

[0007] The adjustment component includes two sealing grooves, both of which are opened inside the nozzle body, the sealing grooves are connected to the material cavity, and movable columns are arranged inside the two sealing grooves. A sealing plate is installed at one end of the movable column close to the material cavity, and the end of the sealing plate away from the movable column passes through the sealing groove and extends to the inside of the material cavity, and the two sealing plates are in contact;

[0008] The nozzle body is provided with mounting cylinders on both sides, the end of the movable column away from the sealing plate passes through the nozzle body and the mounting cylinder in sequence and extends into the interior of the mounting cylinder, the end of the movable column close to the mounting cylinder is provided with a T-column, the T-column is arranged inside the mounting cylinder, and a spring is provided on the side of the T-column away from the movable column;

[0009] The rear sides of the two mounting tubes, one end of which is close to the nozzle body, are fixedly connected with a connecting pipe, which is arranged on the side of the T-pillar close to the movable column. The rear sides of the two connecting pipes are provided with the same three-way pipe, which is arranged on the rear side of the nozzle body. The rear sides of both ends of the three-way pipe are fixedly connected with the rear sides of the two connecting pipes respectively.

[0010] In a preferred embodiment, the cross section of the material cavity is set to be rectangular, and the outer portion of the sealing plate is in contact with the inner wall of the material cavity.

[0011] In a preferred embodiment, two nozzle cores are installed on both sides of the bottom end of the nozzle body and are spaced apart from each other. The nozzle cores penetrate the nozzle body and are connected to the transfer chamber.

[0012] In a preferred embodiment, a sealing plug is provided at one end of the mounting tube away from the nozzle body, an end of the sealing plug close to the nozzle body extends into the mounting tube, and an end of the sealing plug close to the mounting tube is threadedly connected to the inner wall of the mounting tube.

[0013] In a preferred embodiment, a plurality of spaced-apart mounting bolts are provided at the bottom of the mounting frame, the mounting bolts respectively correspond to the positions of the plurality of mounting holes, the top ends of the mounting bolts pass through the mounting holes and extend into the interior of the injection molded body, and the mounting bolts are threadedly connected to the injection molded body.

[0014] In a preferred embodiment, a mounting frame is installed on the outside of the top end of the nozzle body, and a plurality of mounting holes distributed at intervals are opened through the mounting frame.

[0015] Technical effects and advantages of the utility model:

[0016] The gas is transported to the inside of the two installation cylinders through the three-way pipe and the two connecting pipes respectively. Then, the T-column is squeezed by the increase of gas to drive the sealing plate connected to the movable column to move outward, so that the two sealing plates can be respectively stored in the two sealing grooves, so as to achieve the purpose of not blocking the material cavity with the sealing plate, realize the normal transportation of materials, and avoid the obstruction of the adjusting component and affect the flow efficiency of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a cross-sectional view of the nozzle body of the utility model;

[0019] Figure 3 For the utility model Figure 2 Enlarged view of part A in the middle;

[0020] Figure 4 This is the front view of the sealing plate of the utility model;

[0021] Figure 5 It is a side sectional view of the installation tube of the utility model.

[0022] The accompanying drawings are marked as follows: 1. nozzle body; 2. injection molding body; 3. material cavity; 4. transfer cavity; 5. sealing groove; 6. movable column; 7. sealing plate; 8. mounting cylinder; 9. T-column; 10. spring; 11. connecting pipe; 12. three-way pipe; 13. nozzle core; 14. sealing plug; 15. mounting frame; 16. mounting hole; 17. mounting bolt. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Refer to the instruction manual Figure 1-5 The utility model provides a multi-head nozzle hot runner, comprising a nozzle body 1, wherein an injection molding body 2 for conveying materials is arranged on the top of the nozzle body 1, wherein a material cavity 3 and a transfer cavity 4 are connected and penetrated inside the nozzle body 1, and an adjusting component for adjusting the opening or closing of the material cavity 3 is arranged inside the material cavity 3;

[0025] like Figure 2-5As shown, the adjustment component includes two sealing grooves 5, both of which are opened inside the nozzle body 1, and the sealing grooves 5 are connected with the material chamber 3. A movable column 6 is arranged inside the two sealing grooves 5. A sealing plate 7 is installed at one end of the movable column 6 close to the material chamber 3. The end of the sealing plate 7 away from the movable column 6 passes through the sealing groove 5 and extends into the material chamber 3, and the two sealing plates 7 are in contact; installation cylinders 8 are installed on both sides of the nozzle body 1, and the end of the movable column 6 away from the sealing plate 7 passes through the nozzle body 1 and the installation cylinder 8 in turn and extends into the installation cylinder 8 A T-pillar 9 is installed at one end of the movable column 6 close to the mounting cylinder 8, and the T-pillar 9 is arranged inside the mounting cylinder 8. A spring 10 is provided on the side of the T-pillar 9 away from the movable column 6; the rear sides of the ends of the two mounting cylinders 8 close to the nozzle body 1 are fixedly connected with a connecting pipe 11, and the connecting pipe 11 is arranged on the side of the T-pillar 9 close to the movable column 6. The rear sides of the two connecting pipes 11 are provided with the same three-way pipe 12, and the three-way pipe 12 is arranged on the rear side of the nozzle body 1, and the rear sides of both ends of the three-way pipe 12 are fixedly connected with the rear sides of the two connecting pipes 11 respectively.

[0026] like Figure 2 and 3 As shown, the cross-section of the material chamber 3 is set to be rectangular, and the outside of the sealing plate 7 is in contact with the inner wall of the material chamber 3. By setting the cross-section of the material chamber 3 to be rectangular, the sealing plate 7 can fit tightly with the inner wall of the material chamber 3, thereby ensuring the sealing effect of the sealing plate 7 on the material chamber 3.

[0027] like Figure 1 and 2 As shown, two nozzle cores 13 are installed on both sides of the bottom of the nozzle body 1 and are spaced apart from each other. The nozzle core 13 penetrates the nozzle body 1 and is connected to the transfer chamber 4. Through the connection between the nozzle core 13 and the transfer chamber 4, the material is transported to the inside of the nozzle core 13 through the transfer chamber 4, and the injection molding process is performed by the nozzle core 13.

[0028] like Figure 3-5 As shown, a sealing plug 14 is provided at one end of the mounting cylinder 8 away from the nozzle body 1, and the sealing plug 14 extends into the interior of the mounting cylinder 8 at one end close to the nozzle body 1. The outer side of the sealing plug 14 close to the mounting cylinder 8 is threadedly connected to the inner wall of the mounting cylinder 8. Through the threaded connection between the sealing plug 14 and the mounting cylinder 8, the mounting cylinder 8 can be sealed and closed to achieve limited support for the spring 10 and ensure the stability of the spring 10 during expansion and contraction. At the same time, it is also convenient for the staff to seal the plug 14 to take out the spring 10 for replacement, thereby improving the convenience for the staff to inspect and replace the spring 10.

[0029] like Figure 1 and 2As shown, a plurality of spaced mounting bolts 17 are provided at the bottom of the mounting frame 15, and the mounting bolts 17 correspond to the positions of the plurality of mounting holes 16 respectively. The top of the mounting bolt 17 passes through the mounting hole 16 and extends into the inside of the injection molding body 2. The mounting bolt 17 is threadedly connected to the injection molding body 2. The threaded connection between the mounting bolt 17 and the injection molding body 2 can enhance the tightness of the connection between the mounting frame 15 and the injection molding body 2, and ensure the stability of the use of the nozzle body 1. The mounting frame 15 is installed on the top of the nozzle body 1. The mounting frame 15 is provided with a plurality of spaced mounting holes 16 inside. Through the plurality of mounting holes 16 on the mounting frame 15, the staff can connect the nozzle body 1 with the injection molding body 2 with the mounting bolt 17.

[0030] The gas supply device is connected through the three-way pipe 12, and then the gas is respectively transported to the inside of the two installation cylinders 8 through the three-way pipe 12 and the two connecting pipes 11. Then, the T-pillar 9 is squeezed by the increase of gas to drive the sealing plate 7 connected to the movable column 6 to move outward, so that the two sealing plates 7 can be respectively stored in the two sealing grooves 5, so that the sealing plate 7 does not block the material cavity 3, and the normal transportation of the material is realized. There is no other equipment occupying the space inside the material cavity 3 to affect the transportation efficiency and transportation volume of the material. The material is then transported to the inside of the multiple nozzles 13 through the transfer cavity 4 for injection molding operation;

[0031] After the injection molding is completed, the gas supply equipment discharges the gas in the installation cylinder 8 through the three-way pipe 12 and the connecting pipe 11, so that the T-column 9 can push the sealing plate 7 connected to the movable column 6 to move inward with the help of the tension of the spring 10, thereby allowing the two sealing plates 7 to cooperate to seal the material cavity 3.

[0032] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A multi-nozzle hot runner, comprising a nozzle body (1), characterized in that: The top of the nozzle body (1) is provided with an injection molding body (2) for conveying materials, the inside of the nozzle body (1) is provided with a material cavity (3) and a transfer cavity (4) which are connected to each other, and the inside of the material cavity (3) is provided with an adjustment component for adjusting the opening or closing of the material cavity (3); The adjustment component comprises two sealing grooves (5), both of which are arranged inside the nozzle body (1), the sealing grooves (5) are connected with the material chamber (3), and movable columns (6) are arranged inside the two sealing grooves (5), and a sealing plate (7) is installed at one end of the movable column (6) close to the material chamber (3), and the end of the sealing plate (7) far from the movable column (6) passes through the sealing groove (5) and extends into the material chamber (3), and the two sealing plates (7) are in contact with each other; Both sides of the nozzle body (1) are provided with mounting cylinders (8); the end of the movable column (6) away from the sealing plate (7) passes through the nozzle body (1) and the mounting cylinder (8) in sequence and extends into the interior of the mounting cylinder (8); a T-column (9) is installed at the end of the movable column (6) close to the mounting cylinder (8); the T-column (9) is arranged inside the mounting cylinder (8); and a spring (10) is provided on the side of the T-column (9) away from the movable column (6); The rear sides of the two mounting tubes (8) close to the nozzle body (1) are both fixedly connected with a connecting pipe (11), the connecting pipe (11) is arranged on the side of the T-pillar (9) close to the movable column (6), the rear sides of the two connecting pipes (11) are provided with a same three-way pipe (12), the three-way pipe (12) is arranged on the rear side of the nozzle body (1), and the rear sides of both ends of the three-way pipe (12) are respectively fixedly connected with the rear sides of the two connecting pipes (11).

2. A multi-nozzle hot runner according to claim 1, characterized in that: The cross section of the material cavity (3) is set to be rectangular, and the outside of the sealing plate (7) is in contact with the inner wall of the material cavity (3).

3. The multi-nozzle hot runner according to claim 1, characterized in that: Two nozzle cores (13) spaced apart from each other are installed on both sides of the bottom of the nozzle body (1). The nozzle cores (13) penetrate the nozzle body (1) and are connected to the transfer chamber (4).

4. The multi-nozzle hot runner according to claim 1, characterized in that: A sealing plug (14) is provided at one end of the installation tube (8) away from the nozzle body (1), and an end of the sealing plug (14) close to the nozzle body (1) extends into the interior of the installation tube (8). The exterior of an end of the sealing plug (14) close to the installation tube (8) is threadedly connected to the inner wall of the installation tube (8).

5. The multi-nozzle hot runner according to claim 1, characterized in that: A mounting frame (15) is installed on the outside of the top end of the nozzle body (1), and a plurality of mounting holes (16) distributed at intervals are provided through the inside of the mounting frame (15).

6. A multi-nozzle hot runner according to claim 5, characterized in that: The bottom of the mounting frame (15) is provided with a plurality of mounting bolts (17) distributed at intervals, the mounting bolts (17) respectively correspond to the positions of the plurality of mounting holes (16) in the upper and lower directions, the top ends of the mounting bolts (17) pass through the mounting holes (16) and extend into the interior of the injection molded body (2), and the mounting bolts (17) are threadedly connected to the injection molded body (2).

Images