Special special-shaped position glue feeding structure

Abstract

The utility model relates to the field of injection molding process, and discloses a special special-shaped position glue feeding structure which comprises a shell, a main nozzle and a splitter plate, an upper group of hot nozzles and a lower group of hot nozzles are arranged on the surface of the right side of the shell, valve needles are sleeved in the hot nozzles, and hot nozzle heating rings are fixedly connected to the inner walls of the hot nozzles. A hot nozzle head is connected to the surface of the hot nozzle in a sleeving mode, a hot nozzle core is fixedly connected to the end, close to the hot nozzle head, of the hot nozzle, a dustproof assembly is arranged on the surface of the hot nozzle and comprises a sliding cover, and a protruding block is fixedly connected to the bottom end of the inner side wall of the sliding cover. According to the hot nozzle, through cooperative work of the sliding cover, the semi-conical shielding cover, the connecting spring and other components, automatic dust prevention of the hot nozzle and automatic opening during glue feeding are achieved. When the hot nozzle is not used, the semi-conical shielding cover can effectively prevent dust from entering the hot nozzle, and the cleanness of the interior of the hot nozzle is guaranteed; when the hot nozzle is close to the mold, the hot nozzle can be automatically opened, and glue feeding is not affected.

Description

Technical Field

[0001] This utility model relates to the field of injection molding process, and in particular to a special irregular position injection structure. Background Technology

[0002] In injection molding, the injection gate structure plays a crucial role in the quality and production efficiency of plastic products. Especially for injection molding in special irregular shapes, a suitable injection gate structure can ensure that the plastic melt fills the mold cavity uniformly and smoothly, thereby producing high-quality products.

[0003] Currently, existing special irregular position injection structures have some shortcomings: most existing injection structures lack effective dust prevention measures, and dust and other impurities can easily enter the hot nozzle, affecting the injection stability and product quality. Moreover, cleaning and maintenance are relatively difficult. At the same time, some injection structure designs are not flexible enough and cannot meet the injection requirements of special irregular positions, which can easily lead to uneven plastic melt filling and product defects. Therefore, a special irregular position injection structure is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a special irregular position glue injection structure, which aims to improve the problem that most existing glue injection structures lack effective dust prevention measures, and dust and other impurities can easily enter the hot nozzle, affecting the stability of glue injection and product quality, and are also difficult to clean and maintain.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a special irregular position glue injection structure, including a shell, a main nozzle and a flow divider plate, wherein the right side surface of the shell is provided with two sets of hot nozzles, a valve needle is sleeved inside the hot nozzle, a hot nozzle heating coil is fixedly connected to the inner wall of the hot nozzle, a hot nozzle tip is sleeved on the surface of the hot nozzle, a hot nozzle core is fixedly connected to the end of the hot nozzle near the hot nozzle tip, and a dustproof component is provided on the surface of the hot nozzle;

[0006] The dustproof assembly includes a sliding cover, the inner wall of the top of the sliding cover is elastically connected to a semi-conical shield by a connecting spring, the bottom end of the semi-conical shield is slidably connected to a guide rod, the surface of the hot nozzle is elastically connected to a toggle block by a reset spring, and the bottom end of the inner side wall of the sliding cover is fixedly connected to a protrusion.

[0007] As a further description of the above technical solution:

[0008] A solenoid valve is provided at the top of the outer wall of the housing, and a junction box is provided at the top of the outer wall of the housing.

[0009] As a further description of the above technical solution:

[0010] One end of the reset spring is fixedly connected to the bottom end of the toggle block, and the other end of the reset spring is fixedly connected to the bottom end of the hot nozzle surface.

[0011] As a further description of the above technical solution:

[0012] The lever is slidably connected to the surface of the hot nozzle, and the top of the lever is in contact with the surface of the protrusion.

[0013] As a further description of the above technical solution:

[0014] The surface of the hot nozzle is provided with a Y-shaped groove, the outer wall of the protrusion is in contact with the inner wall of the Y-shaped groove, and the inner side wall of the sliding cover is in contact with the surface of the hot nozzle.

[0015] As a further description of the above technical solution:

[0016] One end of the connecting spring is fixedly connected to the outer wall of the bottom end of the guide rod, and the other end of the connecting spring is fixedly connected to the inner wall of the top end of the sliding cover.

[0017] As a further description of the above technical solution:

[0018] The bottom end of the guide rod is slidably connected to the surface of the top of the sliding cover, and the semi-conical shield is fixedly connected to the inner wall of the top of the sliding cover.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this utility model, the automatic dust prevention and automatic opening during glue injection are achieved through the coordinated operation of components such as the sliding cover, the semi-conical shield, and the connecting spring. When not in use, the semi-conical shield can effectively prevent dust from entering the hot nozzle, ensuring the cleanliness of the inside of the hot nozzle; when the hot nozzle approaches the mold, it can automatically open without affecting the glue injection.

[0021] 2. In this utility model, the dustproof component is easy to install and disassemble. With the cooperation of the Y-shaped groove, the protrusion, the push block and the return spring, the installation and fixation can be completed with simple alignment, rotation and push operation, which improves the convenience of operation, provides great convenience for injection molding production and helps to improve the overall production efficiency.

[0022] 3. In this utility model, the flat head design of the hot nozzle core significantly increases the amount of plastic injected while ensuring the strength of the mold, so that the plastic melt can fill the mold cavity more quickly and evenly, thereby improving the efficiency of injection molding and product quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a special irregular-shaped glue injection structure proposed in this utility model;

[0024] Figure 2 This is a three-dimensional schematic diagram of a hot nozzle and dustproof assembly with a special irregularly shaped glue inlet structure proposed in this utility model;

[0025] Figure 3 This is a partial cross-sectional view of a sliding cover with a special irregularly shaped adhesive injection structure proposed in this utility model;

[0026] Figure 4 This is a bottom view of the sliding cover structure of a special irregularly shaped glue injection structure proposed in this utility model;

[0027] Figure 5 This is a front perspective view of a special irregularly shaped glue injection structure proposed in this utility model;

[0028] Figure 6 This is a side perspective view of a special irregularly shaped glue injection structure proposed in this utility model.

[0029] Legend:

[0030] 1. Housing; 2. Solenoid valve; 3. Junction box; 4. Hot nozzle; 5. Dustproof assembly; 51. Sliding cover; 52. Return spring; 53. Toggle block; 54. Connecting spring; 55. Semi-conical shield; 56. Guide rod; 57. Protrusion; 6. Diverter plate; 7. Hot nozzle tip; 8. Hot nozzle core; 9. Valve needle; 10. Hot nozzle heating coil; 11. Main nozzle. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 - Figure 3This utility model provides an embodiment of a special irregular-shaped injection structure, including a housing 1, a main nozzle 11, and a flow divider 6. The separate design of the hot nozzle 4 and the flow divider 6 reduces the probability of carbonization and facilitates maintenance. The right side surface of the housing 1 is provided with two sets of hot nozzles 4, one upper and one lower. A valve needle 9 is sleeved inside the hot nozzle 4. A hot nozzle heating coil 10 is fixedly connected to the inner wall of the hot nozzle 4. The hot nozzle heating coil 10 adopts a power density design, with denser coils at both ends and sparser coils in the middle. The head has 2-5 coils and the tail has 2-6 coils to reduce the probability of carbonization of the hot nozzle 4. A hot nozzle tip 7 is sleeved on the surface of the hot nozzle 4. A hot nozzle core 8 is fixedly connected to one end of the hot nozzle 4 near the hot nozzle tip 7. By setting the hot nozzle core 8 as a flat head, the injection volume is increased while ensuring that the strength of the mold is not affected. A dustproof component 5 is provided on the surface of the hot nozzle 4.

[0033] Reference Figure 2 - Figure 4 The dustproof component 5 includes a sliding cover 51. A semi-conical shield 55 is elastically connected to the inner wall of the top of the sliding cover 51 via a connecting spring 54. One end of the connecting spring 54 is fixedly connected to the outer wall of the bottom end of the guide rod 56, and the other end is fixedly connected to the inner wall of the top of the sliding cover 51. The function of the connecting spring 54 is that when the top of the guide rod 56 contacts the mold, the internal hot nozzle core 8 pushes the two sets of guide rods 56 outwards on the surface of the sliding cover 51, thereby exposing the hot nozzle core 8. After the contact with the mold is removed, the guide rods 56 automatically reset due to the elastic force of the connecting spring 54. The bottom end of the semi-conical shield 55 penetrates... A guide rod 56 is slidably connected to the surface of the hot nozzle 4. A lever 53 is elastically connected to the surface of the hot nozzle 4 via a return spring 52. The lever 53 is slidably connected to the surface of the hot nozzle 4. The top of the lever 53 contacts the surface of the protrusion 57. The protrusion 57 enters from the right side of the Y-shaped groove. The lever 53 is manually moved downward, and the return spring 52 is subjected to elastic compression. When the protrusion 57 drives the sliding cover 51 to the bottom of the right side of the Y-shaped groove, the sliding cover 51 is rotated. At this time, the protrusion 57 moves to the left side of the Y-shaped groove. The lever 53 is released, and it will be subjected to the elastic action of the return spring 52 to fix the position of the protrusion 57 and the sliding cover 51 on the surface of the hot nozzle 4.

[0034] Reference Figure 3One end of the return spring 52 is fixedly connected to the bottom end of the lever 53, and the other end of the return spring 52 is fixedly connected to the bottom end of the surface of the hot nozzle 4. The function of the return spring 52 is to automatically reset the lever 53 after it is lowered by the protrusion 57. The bottom end of the inner side wall of the sliding cover 51 is fixedly connected to the protrusion 57. The surface of the hot nozzle 4 is provided with a Y-shaped groove. The outer wall of the protrusion 57 is in contact with the inner wall of the Y-shaped groove. The inner side wall of the sliding cover 51 is in contact with the surface of the hot nozzle 4. The bottom end of the semi-conical shield 55 is slidably connected to the surface of the top end of the sliding cover 51. By providing the semi-conical shield 55, the entire sliding cover 51 is in contact with the surface of the hot nozzle 4. When the molds come into contact, the molds will press the sliding cover 51 to slide on the surface of the hot nozzle 4 and push the toggle block 53 to compress the return spring 52. At the same time, the hot nozzle core 8 on the surface of the hot nozzle 4 will come into contact with the inner side of the semi-conical shield 55, thereby pressing the two sets of semi-conical shields 55 to move outward on the surface of the sliding cover 51, thereby opening the hot nozzle core 8, so that the internal plastic hot melt can be sprayed out from the hot nozzle core 8. When not in use, the semi-conical shield 55 can protect the hot nozzle 4, thereby preventing dust from entering the interior of the hot nozzle 4 from the hot nozzle core 8. The guide rod 56 is fixedly connected to the inner wall of the top of the sliding cover 51.

[0035] Reference Figure 1 - Figure 5 and Figure 6 A solenoid valve 2 is installed at the top of the outer wall of housing 1, and a junction box 3 is installed at the top of the outer wall of housing 1.

[0036] Working principle: When installing the dustproof component 5, align the protrusion 57 of the sliding cover 51 with the right side of the Y-shaped groove on the surface of the hot nozzle 4, so that the protrusion 57 enters from the right side of the Y-shaped groove. At this time, manually move the lever 53 downward. The return spring 52 is elastically compressed. When the protrusion 57 drives the sliding cover 51 to the bottom right side of the Y-shaped groove, rotate the sliding cover 51 to move the protrusion 57 to the left side of the Y-shaped groove. Then release the lever 53. The lever 53 automatically resets under the elastic action of the return spring 52, fixing the position of the protrusion 57 and the sliding cover 51 on the surface of the hot nozzle 4, thus completing the installation of the dustproof component 5.

[0037] When the hot nozzle 4 approaches the mold, the mold squeezes the sliding cover 51 to slide on the surface of the hot nozzle 4. The sliding cover 51 pushes the push block 53 to further compress the return spring 52. At the same time, the hot nozzle core 8 on the surface of the hot nozzle 4 contacts the inner side of the semi-conical shield 55, squeezing the two sets of semi-conical shields 55 to expand outward on the surface of the sliding cover 51, thereby exposing the hot nozzle core 8. The hot plastic melt inside is sprayed out from the hot nozzle core 8. When the hot nozzle 4 leaves the mold, the semi-conical shield 55 automatically resets under the elastic action of the connecting spring 54, and re-shields the hot nozzle core 8. When not in use, the semi-conical shield 55 and the semi-conical shield 55 protect the hot nozzle 4, preventing dust from entering the interior of the hot nozzle 4 from the hot nozzle core 8, ensuring the cleanliness of the interior of the hot nozzle 4, improving the quality of glue injection and the service life of the hot nozzle.

[0038] When the injection molding machine is working, the control system sends an injection signal, which is transmitted to the solenoid valve 2 to control the air intake of the internal double-layer cylinder. Compressed air enters the outer air chamber of the double-layer cylinder, pushing the outer piston to generate an initial force. At the same time, air also enters the inner air chamber, pushing the inner piston. The forces of the two pistons are superimposed, which together drive the valve needle 9 connected to the piston to overcome the resistance such as spring force and move upward, so that the valve needle 9 moves away from the gate, opens the channel, and allows the plastic melt to be smoothly injected into the mold cavity from the hot nozzle 4. At the same time, the flat head design increases the amount of plastic injected while ensuring that the strength of the mold is not affected.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A special-shaped position glue feeding structure, comprising a shell (1), a main nozzle (11) and a flow distribution plate (6), characterized in that: The right side surface of the shell (1) is provided with two groups of upper and lower heat nozzles (4), the inside of the heat nozzle (4) is sleeved with a valve needle (9), the inner wall of the heat nozzle (4) is fixedly connected with a heat nozzle heating ring (10), the surface of the heat nozzle (4) is sleeved with a heat nozzle nozzle head (7), one end of the heat nozzle (4) close to the heat nozzle nozzle head (7) is fixedly connected with a heat nozzle nozzle core (8), and the surface of the heat nozzle (4) is provided with a dustproof assembly (5). The dustproof assembly (5) includes a sliding cover (51), the inner wall of the top end of the sliding cover (51) is elastically connected with a half-cone shielding cover (55) through a connecting spring (54), the bottom end of the half-cone shielding cover (55) penetrates and is slidingly connected with a guide rod (56), the surface of the heat nozzle (4) is elastically connected with a push block (53) through a reset spring (52), and the bottom end of the inner side wall of the sliding cover (51) is fixedly connected with a protruding block (57).

2. The special profiled position glue feeding structure according to claim 1, characterized in that: The outer wall of the shell (1) is provided with an electromagnetic valve (2) at the top end, and the outer wall of the shell (1) is provided with a junction box (3) at the top end.

3. The special profiled position glue feeding structure according to claim 1, characterized in that: One end of the reset spring (52) is fixedly connected to the bottom end of the push block (53), and the other end of the reset spring (52) is fixedly connected to the bottom end of the surface of the heat nozzle (4).

4. The special profiled position glue feeding structure according to claim 1, characterized in that: The push block (53) is slidingly connected to the surface of the heat nozzle (4), and the top end of the push block (53) is in contact with the surface of the protruding block (57).

5. The special profiled position glue feeding structure according to claim 1, characterized in that: The surface of the heat nozzle (4) is provided with a Y-shaped groove, the outer wall of the protruding block (57) is in contact with the inner wall of the Y-shaped groove, and the inner side wall of the sliding cover (51) is in contact with the surface of the heat nozzle (4).

6. The special profiled position glue feeding structure according to claim 1, characterized in that: One end of the connecting spring (54) is fixedly connected to the outer wall of the bottom end of the guide rod (56), and the other end of the connecting spring (54) is fixedly connected to the inner wall of the top end of the sliding cover (51).

7. The special profiled position glue feeding structure according to claim 1, characterized in that: The bottom end of the half-cone shielding cover (55) is slidingly connected to the surface of the top end of the sliding cover (51), and the guide rod (56) is fixedly connected to the inner wall of the top end of the sliding cover (51).

Images