Anti-overflow injection molding machine head

Abstract

The utility model discloses a kind of anti-overflow material injection molding machine head, including injection molding machine head;The injection molding machine head is composed of mounting seat, threaded slide cylinder, telescopic cylinder and injection head, the telescopic cylinder is installed on the upper end of injection head, the telescopic cylinder upper end is slidably installed in the inside of threaded slide cylinder, the telescopic cylinder upper end is inserted into the inside of mounting seat, the threaded slide cylinder outside is rotatably installed with adjusting nut by thread, the threaded slide cylinder outside is located with upper end mounting plate at the bottom end of adjusting nut, spring is installed on the telescopic cylinder outside.The utility model when long time is used after, when fatigue elasticity of spring changes, rotating adjusting nut, since threaded slide cylinder and adjusting nut are connected by thread, adjusting nut will move up and down along threaded slide cylinder, and then push or pull upper end mounting plate, the compression of spring is changed by the movement of upper end mounting plate, realize the adjustment of spring tension.

Description

Technical Field

[0001] This utility model relates to the field of injection molding head technology, specifically an anti-overflow injection molding head. Background Technology

[0002] The injection head is the "output core" of the injection molding machine, responsible for heating and melting the plastic and then injecting it into the mold under high pressure to make the product.

[0003] Chinese Patent No. 202122621536.3 discloses a plastic injection molding equipment for preventing glue spillage, including a glue spillage injection mechanism. A capping mechanism is provided on the upper end of one side of the glue spillage injection mechanism. An upper module is provided on the upper end of the glue spillage injection mechanism, and a lower module is provided on the lower end of the glue spillage injection mechanism. An inwardly recessed mold groove is provided at the middle position of the end of the upper module near the lower module.

[0004] During use, the injection molding head of this invention is always open, which can easily lead to material overflow. Utility Model Content

[0005] The purpose of this invention is to provide an anti-overflow injection molding head to solve the problems raised in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-overflow injection molding head, comprising an injection molding head; the injection molding head consists of a mounting base, a threaded slide cylinder, a telescopic cylinder, and an injection head; the telescopic cylinder is mounted on the upper end of the injection head; a bottom mounting plate is mounted on the bottom end of the telescopic cylinder; the upper end of the telescopic cylinder is slidably mounted inside the threaded slide cylinder; the upper end of the telescopic cylinder extends into the mounting base; liquid guide holes are provided around the upper side of the section of the telescopic cylinder inside the threaded slide cylinder; an adjusting nut is rotatably mounted on the outer side of the threaded slide cylinder via a thread; an upper mounting plate is fitted onto the outer side of the threaded slide cylinder at the bottom end of the adjusting nut; a spring is mounted on the outer side of the telescopic cylinder; the two ends of the spring are respectively mounted on the bottom end of the upper mounting plate and the upper end of the bottom mounting plate; the threaded slide cylinder is mounted on the bottom end of the mounting base; a fixing plate is mounted on the upper side of the mounting base; and a guide mechanism is installed between the fixing plate and the upper mounting plate.

[0007] Preferably, the guiding mechanism consists of a guide rod, a through hole, and a baffle. The guide rod is installed on both sides of the bottom end of the mounting base, the through hole is provided on both sides of the upper end of the upper mounting plate, the bottom end of the guide rod is slidably installed inside the through hole, and the baffle is installed on the bottom end of the guide rod.

[0008] Preferably, a protective sleeve is provided on the outside of the spring, and the two ends of the protective sleeve are attached to the bottom end of the upper mounting plate and the upper side of the bottom mounting plate with adhesive.

[0009] Preferably, the upper end of the mounting base is provided with an insertion tube, and the bottom end of the insertion tube and the mounting base are integrally formed.

[0010] Preferably, a soft metal pad is provided at the upper end of the fixing plate, and the soft metal pad is welded to the upper end of the fixing plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. When the spring fatigues and its elasticity changes after prolonged use, rotating the adjusting nut will cause the threaded slide to move up and down along the threaded slide because the threaded slide and the adjusting nut are connected by threads. This will push or pull the upper mounting plate, and the movement of the upper mounting plate will change the compression of the spring, thus adjusting the spring tension. 2. During the process of the adjusting nut driving the upper mounting plate to move up and down, and the spring driving the telescopic cylinder to return to its original position, the guide rod at the bottom of the mounting base will slide synchronously in the through hole of the lower mounting plate. The cooperation between the guide rod and the through hole provides precise guidance for the movement of the upper mounting plate and the telescopic cylinder, ensuring that they can only move in a straight line and avoiding deviation or tilting. The baffle at the bottom of the guide rod can prevent the guide rod from slipping out of the through hole, ensuring the continuous and effective operation of the guiding mechanism, thereby maintaining the stability of the entire injection molding head structure and reducing overflow caused by poor sealing due to component shaking. 3. The protective sleeve wraps around the outside of the spring, which can effectively prevent raw materials, dust and other impurities that may splash during the injection molding process from coming into contact with the spring. This prevents impurities from adhering to the spring and affecting its elastic performance or causing the spring to jam, ensuring that the spring can always maintain a stable tension output, ensuring the reliable realization of the reset function, and indirectly reducing the risk of material overflow caused by spring failure. At the same time, the protective sleeve is fixed to the upper and lower mounting plates with adhesive, and its own position is stable and does not affect the normal movement of the spring and other components. 4. The insertion tube and the mounting base are integrated, which enhances the structural strength. In the injection molding system, the insertion tube can be inserted into the material supply device or the upstream material channel to form a tighter connection, reducing leakage points in the process of material being transported to the mounting base. At the same time, the longer insertion length can guide the material to enter the mounting base more smoothly, avoiding material accumulation and retention at the connection, thereby reducing the possibility of overflow. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the external structure of this utility model; Figure 3This is a side view of the structure of this utility model; Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0013] In the diagram: 1. Injection molding head; 2. Insertion tube; 3. Soft metal pad; 4. Fixing plate; 5. Mounting base; 6. Adjusting nut; 7. Protective sleeve; 8. Bottom mounting plate; 9. Injection head; 10. Top mounting plate; 11. Baffle; 12. Through hole; 13. Guide rod; 14. Guide mechanism; 15. Threaded slide; 16. Spring; 17. Telescopic cylinder; 18. Liquid guide hole; 19. Limiting plate. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 In this embodiment of the utility model, an anti-overflow injection molding head includes a baffle 11 comprising an injection molding head 1. The injection molding head 1 consists of a mounting base 5, a threaded slide cylinder 15, a telescopic cylinder 17, and an injection head 9. The telescopic cylinder 17 is mounted on the upper end of the injection head 9, and a bottom mounting plate 8 is mounted on the bottom end of the telescopic cylinder 17. The upper end of the telescopic cylinder 17 is slidably mounted inside the threaded slide cylinder 15, and the upper end of the telescopic cylinder 17 extends into the mounting base 5. Liquid guide holes 18 are provided around the upper side of the section of the telescopic cylinder 17 inside the threaded slide cylinder 15. An adjusting nut 6 is mounted on the outer side of the threaded slide cylinder 15 by threaded rotation. An upper mounting plate 10 is sleeved on the outer side of the threaded slide cylinder 15 at the bottom end of the adjusting nut 6. A spring 16 is mounted on the outer side of the telescopic cylinder 17, and the two ends of the spring 16 are respectively mounted on the bottom end of the upper mounting plate 10 and the upper end of the bottom mounting plate 8. The threaded slide cylinder 15 is mounted on the bottom end of the mounting base 5. A fixing plate 4 is mounted on the upper side of the mounting base 5, and a guide mechanism 14 is installed between the fixing plate 4 and the upper mounting plate 10.

[0016] A limiting plate 19 is provided at the upper end of the telescopic cylinder 17 located inside the mounting base 5. The limiting plate 19 and the telescopic cylinder 17 are integrally formed. When the telescopic cylinder 17 slides inside the threaded slide cylinder 15 and the mounting base 5, the limiting plate 19 at the upper end plays a mechanical limiting role. When the telescopic cylinder 17 moves downward to its limit position, the limiting plate 19 will contact the corresponding structure inside the mounting base 5, preventing the telescopic cylinder 17 from moving further downward and preventing the telescopic cylinder 17 from detaching from the mounting base 5. This ensures the stability and safety of the telescopic cylinder 17 during operation and avoids material overflow caused by abnormal material conveying path due to excessive movement of the telescopic cylinder 17.

[0017] The guiding mechanism 14 consists of a guide rod 13, a through hole 12, and a baffle 11. The guide rod 13 is installed on both sides of the bottom end of the mounting base 5. The baffle 11 and the through hole 12 are located on both sides of the upper end of the upper mounting plate 10. The bottom end of the guide rod 13 is slidably installed inside the through hole 12, and the baffle 11 is installed at the bottom end of the guide rod 13. During the process of the adjusting nut 6 driving the upper mounting plate 10 to move up and down, and the spring 16 driving the telescopic cylinder 17 to reset, the guide rod 13 at the bottom end of the mounting base 5 will slide synchronously in the through hole 12 of the lower mounting plate. The cooperation between the guide rod 13 and the through hole 12 provides precise guidance for the movement of the upper mounting plate 10 and the telescopic cylinder 17, ensuring that they can only move in a straight line and avoiding deviation or tilting. The baffle 11 at the bottom end of the guide rod 13 can prevent the guide rod 13 from slipping out of the through hole 12, ensuring the continuous and effective operation of the guiding mechanism 14, thereby maintaining the stability of the entire injection molding head 1 structure and reducing overflow caused by poor sealing due to component shaking.

[0018] A protective sleeve 7 is provided on the outside of the spring 16. The two ends of the protective sleeve 7 are glued to the bottom of the upper mounting plate 10 and the upper side of the bottom mounting plate 8 with adhesive. The protective sleeve 7 wraps around the outside of the spring 16, which can effectively prevent raw materials, dust and other impurities that may splash during the injection molding process from coming into contact with the spring 16. This prevents impurities from adhering to the spring 16 and affecting its elastic performance or causing the spring 16 to jam. It ensures that the spring 16 can always maintain a stable tension output, guarantee the reliable realization of the reset function, and indirectly reduce the risk of material overflow caused by spring 16 failure. At the same time, the protective sleeve 7 is fixed to the upper and lower mounting plates with adhesive, and its own position is stable and does not affect the normal movement of the spring 16 and other components.

[0019] The upper end of the mounting base 5 is provided with an extension tube 2, and the bottom end of the extension tube 2 is integrally formed with the mounting base 5. The integral formation of the extension tube 2 and the mounting base 5 enhances the structural strength. In the injection molding system, the extension tube 2 can be inserted into the material supply device or the upstream material channel to form a tighter connection, reducing leakage points in the process of material being transported to the mounting base 5. At the same time, the longer insertion length can guide the material to enter the interior of the mounting base 5 more smoothly, avoiding material accumulation and retention at the connection, thereby reducing the possibility of overflow.

[0020] A soft metal pad 3 is provided on the upper end of the fixed plate 4, and the soft metal pad 3 is welded to the upper end of the baffle 11. When the fixed plate 4 is connected and fixed with other parts of the injection molding equipment, the soft metal pad 3, due to its certain flexibility and extensibility, will undergo slight deformation under the connection pressure, filling the tiny gaps between the fixed plate 4 and the connecting parts. This not only enhances the sealing of the connection and prevents the raw material from leaking from the connection, but also buffers the vibration generated during the injection molding process, reduces the loosening of the connection caused by vibration, and further ensures the overall anti-overflow effect of the injection molding head 1.

[0021] The working principle and usage process of this utility model are as follows: When the casting head 9 comes into contact with the mold and generates extrusion force, the spring 16 will contract. At this time, the telescopic cylinder 17 will slide along the threaded slide cylinder 15 and extend into the mounting base 5. The injection material enters the threaded slide cylinder 15 through the mounting base 5, flows into the telescopic cylinder 17 through the liquid guide hole 18 on the telescopic cylinder 17, and is finally ejected from the injection head 9. When the spring 16 undergoes fatigue and elasticity changes after long-term use, the adjusting nut 6 is rotated. Since the threaded slide cylinder 15 and the adjusting nut 6 are connected by threads, the adjusting nut 6 will move up and down along the threaded slide cylinder 15, thereby pushing or pulling the upper mounting plate 10. The movement of the upper mounting plate 10 changes the compression of the spring 16, thereby adjusting the tension of the spring 16. When the injection is completed or needs to be reset, the elastic force of the spring 16 acts on the bottom mounting plate 8 and the upper mounting plate 10, causing the telescopic cylinder 17 to slide and reset within the threaded slide cylinder 15. Appropriate spring tension can ensure that the reset action is fast and accurate, reducing the overflow problem caused by material retention during the reset process.

[0022] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. An anti-overflow injection molding head, comprising an injection molding head (1); characterized in that: The injection molding head (1) consists of a mounting base (5), a threaded slide cylinder (15), a telescopic cylinder (17), and an injection head (9). The telescopic cylinder (17) is mounted on the upper end of the injection head (9). A bottom mounting plate (8) is mounted on the bottom end of the telescopic cylinder (17). The upper end of the telescopic cylinder (17) is slidably mounted inside the threaded slide cylinder (15). The upper end of the telescopic cylinder (17) extends into the mounting base (5). Liquid guide holes (18) are provided around the upper side of the section of the telescopic cylinder (17) inside the threaded slide cylinder (15). The outer side of the threaded slide cylinder (15) has... An adjusting nut (6) is installed by rotating the threaded cylinder (15). An upper mounting plate (10) is fitted on the outside of the adjusting nut (6) at the bottom. A spring (16) is installed on the outside of the telescopic cylinder (17). The two ends of the spring (16) are respectively installed on the bottom of the upper mounting plate (10) and the upper end of the bottom mounting plate (8). The threaded cylinder (15) is installed on the bottom of the mounting base (5). A fixing plate (4) is installed on the upper side of the mounting base (5). A guide mechanism (14) is installed between the fixing plate (4) and the upper mounting plate (10).

2. The anti-overflow injection molding head according to claim 1, characterized in that: The upper end of the telescopic cylinder (17) is provided with a limiting plate (19) located at the upper end of the inner section of the mounting base (5). The limiting plate (19) and the telescopic cylinder (17) are integrally formed.

3. The anti-overflow injection molding head according to claim 1, characterized in that: The guiding mechanism (14) consists of a guide rod (13), a through hole (12) and a baffle (11). The guide rod (13) is installed on both sides of the bottom end of the mounting base (5). The through hole (12) is set on both sides of the upper end of the upper mounting plate (10). The bottom end of the guide rod (13) is slidably installed inside the through hole (12). The baffle (11) is installed on the bottom end of the guide rod (13).

4. The anti-overflow injection molding head according to claim 1, characterized in that: A protective sleeve (7) is provided on the outside of the spring (16), and the two ends of the protective sleeve (7) are glued to the bottom of the upper mounting plate (10) and the upper side of the bottom mounting plate (8) by adhesive.

5. The anti-overflow injection molding head according to claim 1, characterized in that: The upper end of the mounting base (5) is provided with an insertion tube (2), and the bottom end of the insertion tube (2) and the mounting base (5) are integrally formed.

6. The anti-overflow injection molding head according to claim 1, characterized in that: A soft metal pad (3) is provided on the upper end of the fixing plate (4), and the soft metal pad (3) is welded to the upper end of the fixing plate (4).

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