Needle valve type anti-deformation hot nozzle

Abstract

The utility model relates to the technical field of needle valve type hot nozzles, and discloses a needle valve type anti-deformation hot nozzle, which comprises a runner plate, the lower part of the runner plate is connected with a nozzle body shell, the top of the runner plate is provided with a mounting cylinder, a valve needle is inserted in the runner plate, the top of the mounting cylinder is circumferentially provided with a groove, and the valve needle is inserted in the groove. And the outer portions of the assembling transverse rods are sleeved with sliding seats, the bottom ends of the sliding seats are connected with steel plates, the bottom ends of the steel plates are connected with mounting heads, the sides, facing the valve needle, of the interiors of the mounting heads are connected with universal balls in a clamped mode, and the inner sides of the exteriors of the guiding rods are sleeved with hard springs. According to the needle valve type anti-deformation hot nozzle, the mounting head and the universal ball are additionally arranged, and the needle valve type anti-deformation hot nozzle is pressed and covered outside the valve needle through the hard spring and the steel plate for limiting and righting, so that the valve needle can be kept at a correct position in the movement process, the valve needle is prevented from deviating or shaking, and the movement stability of the valve needle is improved.

Description

Technical Field

[0001] This utility model relates to the field of needle valve type hot nozzle technology, specifically a needle valve type anti-deformation hot nozzle. Background Technology

[0002] The needle valve type anti-deformation hot nozzle is a component of the hot runner system commonly used in injection molds. It controls the opening and closing of the gate through the mechanical action of the valve needle, thereby achieving precise control of the flow of plastic melt.

[0003] Common needle valve type anti-deformation hot nozzles include: a runner plate, which contains internal runners and heating elements to maintain the molten plastic; a valve needle, which controls the opening and closing of the gate through mechanical action; and a gate sleeve, which is connected to the mold and used to guide the molten plastic from the hot nozzle into the mold cavity.

[0004] However, because the movement of the valve needle can be controlled by hydraulic oil or compressed gas, and the needle itself is relatively thin, it is easily deformed under high temperature and pressure, which can lead to skewness. This affects the accuracy of the valve needle in controlling the opening and closing of the gate, reduces the quality of the needle valve type anti-deformation hot nozzle, and cannot meet the working requirements of the needle valve type anti-deformation hot nozzle. Therefore, a needle valve type anti-deformation hot nozzle is proposed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a needle valve-type anti-deformation hot nozzle, which solves the technical problem that the valve needle itself is thin and therefore easily deformed under high temperature and pressure, resulting in skewness and affecting the accuracy of the valve needle in controlling the opening and closing of the gate.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a needle valve type anti-deformation hot nozzle, comprising:

[0009] The flow channel plate has a nozzle housing connected to its lower part and an installation cylinder mounted on its top. A valve needle is inserted inside the flow channel plate. A copper sleeve is installed at the bottom of the flow channel plate inside the nozzle housing. A heating wire is spirally attached to the outside of the copper sleeve. The top of the installation cylinder has a circumferential groove, and insert plates are inserted into each groove. A connecting plate is installed on the inside of each insert plate. Assembly crossbars are connected to the left and right sides of the mounting surface of the connecting plate. A slide is fitted on the outside of each assembly crossbar. A steel plate is connected to the bottom of each slide. An installation head is connected to the bottom of each steel plate. A universal ball is engaged on the side of the installation head facing the valve needle. A guide rod is inserted in the middle of the inside of the slide. A rigid spring is fitted on both the outside and inside of the guide rod.

[0010] Preferably, the groove depth is the same as the thickness of the insert plate, and screws are screwed onto both the left and right sides of the insert plate. The added screws facilitate the disassembly and assembly of the insert plate.

[0011] Preferably, the number of grooves and inserts is 3-6 sets, the shape of the mounting head is arc-shaped, and the steel plate is inclined L-shaped. The multiple sets of mounting heads can straighten the valve needle in multiple directions.

[0012] Preferably, a mounting base is installed on the inner side of the assembly crossbar, and the left and right ends of the guide rod are respectively connected to the corresponding positions on the inner side of the connecting plate and the mounting base, thereby improving the stability of the slide.

[0013] Preferably, the left and right ends of the rigid spring are connected to the corresponding positions on the inner side of the slide and the mounting base, respectively. The number of universal balls is 1-3 sets. The added universal balls ensure that the normal up and down movement of the valve needle will not be interfered with after the valve needle is straightened.

[0014] Preferably, corner brackets are connected to the lower outer surface of the mounting cylinder and the upper outer surface of the flow channel plate at corresponding positions. The number of corner brackets is 3-6 sets, and the internal parts of the corner brackets are connected by bolt and nut fittings, which facilitates the assembly and disassembly of the mounting cylinder.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a needle valve type anti-deformation hot nozzle, which has the following beneficial effects:

[0017] This needle valve-type anti-deformation hot nozzle, through the addition of an installation head and a universal ball, and by using a rigid spring and steel plate to press it against the outside of the valve needle for limiting and straightening, ensures that the valve needle maintains the correct position during movement. This prevents the valve needle from deforming under high temperature and pressure, which could lead to displacement or wobbling, thereby improving the stability of the valve needle movement and enhancing the accuracy of the valve needle's opening and closing at the gate. Furthermore, the straightening mechanism of the installation head and universal ball helps ensure that the valve needle can completely seal when closing the gate, preventing defects such as flash or shrinkage caused by leakage of plastic melt from the gate. At the same time, the straightening mechanism can reduce wear between the valve needle head and the internal structure of the hot nozzle, extending the service life of the valve needle and the hot nozzle. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the nozzle shell of this utility model;

[0020] Figure 3This is an exploded view of the mounting cylinder and insert plate structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the connecting plate structure of this utility model.

[0022] In the diagram: 1. Flow channel plate; 2. Nozzle housing; 3. Mounting cylinder; 4. Valve needle; 5. Copper sleeve; 6. Heating wire; 7. Groove; 8. Insert plate; 9. Screw; 10. Connecting plate; 11. Assembly crossbar; 12. Slide; 13. Mounting base; 14. Steel plate; 15. Mounting head; 16. Universal ball; 17. Guide rod; 18. Hard spring; 19. Angle bracket. Detailed Implementation

[0023] 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.

[0024] This utility model provides a technical solution: a needle valve type anti-deformation hot nozzle, comprising a flow channel plate 1, a nozzle body shell 2, a mounting cylinder 3, a valve needle 4, a copper sleeve 5, a heating wire 6, a groove 7, an insert plate 8, a screw 9, a connecting plate 10, an assembly crossbar 11, a slide 12, a mounting base 13, a steel plate 14, a mounting head 15, a universal ball 16, a guide rod 17, a rigid spring 18, and an angle bracket 19.

[0025] Please see Figure 1 The lower part of the flow channel plate 1 is connected to the nozzle housing 2, the top of the flow channel plate 1 is equipped with an installation cylinder 3, and a valve needle 4 is inserted inside the flow channel plate 1. Please refer to [link / reference]. Figure 2 A copper sleeve 5 is installed at the bottom of the flow channel plate 1, located inside the nozzle housing 2. A heating wire 6 is screwed onto the outside of the copper sleeve 5. Please refer to [link / reference]. Figure 3 The top circumferential surface of the mounting cylinder 3 has a groove 7, and each groove 7 has an insert plate 8 inserted inside. Please refer to [link / reference]. Figure 4A connecting plate 10 is installed on the inner side of the insert plate 8. A mounting crossbar 11 is connected to both the left and right sides of the mounting surface of the connecting plate 10. A slide block 12 is fitted onto the outside of each mounting crossbar 11. A steel plate 14 is connected to the bottom end of each slide block 12. A mounting head 15 is connected to the bottom end of each steel plate 14. A universal ball 16 is engaged inside the mounting head 15 on the side facing the valve needle 4. A guide rod 17 is inserted in the middle of the inside of the slide block 12. A rigid spring 18 is fitted on both the outer and inner sides of the guide rod 17. The guide rod 17 is pressed down by the added mounting head 15 and universal ball 16, and by the rigid spring 18 and steel plate 14. The valve needle 4 is covered and positioned to ensure it remains in the correct position during movement, preventing it from shifting or wobbling. This improves the stability of the valve needle 4's movement and enhances its accuracy in opening and closing the gate. Furthermore, the positioning mechanism of the mounting head 15 and the universal ball joint 16 helps ensure a complete seal when the gate is closed, preventing defects such as flash or shrinkage caused by leakage of molten plastic from the gate. Simultaneously, the positioning mechanism reduces wear between the valve needle 4's head and the internal structure of the hot runner, extending the service life of both the valve needle 4 and the hot runner. Please refer to [link to relevant documentation]. Figure 3 The groove depth of groove 7 is the same as the thickness of insert plate 8. Screws 9 are screwed onto both the left and right sides of the interior of insert plate 8. There are 3-6 sets of grooves 7 and insert plates 8. The mounting head 15 is arc-shaped. Please refer to [link / reference]. Figure 4 The steel plate 14 is an inclined L-shape. The outer inner side of the mounting crossbar 11 is equipped with a mounting seat 13. The left and right ends of the guide rod 17 are respectively connected to the corresponding positions of the inner side of the connecting plate 10 and the mounting seat 13. The left and right ends of the rigid spring 18 are respectively connected to the corresponding positions of the inner side of the slide 12 and the mounting seat 13. There are 1-3 sets of universal balls 16. Angle brackets 19 are connected to the corresponding positions of the lower outer side of the mounting cylinder 3 and the upper outer side of the flow channel plate 1. There are 3-6 sets of angle brackets 19. The inside of the angle brackets 19 is connected by bolt and nut fittings.

[0026] This solution uses an added mounting head 15 and a universal ball joint 16, which are pressed against the outside of the valve needle 4 by a rigid spring 18 and a steel plate 14 for limiting and straightening. This ensures that the valve needle 4 maintains the correct position during movement, preventing it from shifting or wobbling, thus improving the stability of the valve needle 4's movement and enhancing the accuracy of the valve needle 4 in opening and closing the gate. Furthermore, the straightening mechanism of the mounting head 15 and the universal ball joint 16 helps ensure that the valve needle 4 can completely seal when closing the gate, preventing defects such as flash or shrinkage caused by leakage of plastic melt from the gate. At the same time, the straightening mechanism can reduce the wear between the head of the valve needle 4 and the internal structure of the hot nozzle, extending the service life of the valve needle 4 and the hot nozzle.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A needle valve type anti-deformation hot nozzle, characterized in that, include: The flow channel plate has a nozzle housing connected to its lower part and an installation cylinder mounted on its top. A valve needle is inserted inside the flow channel plate. A copper sleeve is installed at the bottom of the flow channel plate inside the nozzle housing. A heating wire is spirally attached to the outside of the copper sleeve. The top of the installation cylinder has a circumferential groove, and insert plates are inserted into each groove. A connecting plate is installed on the inside of each insert plate. Assembly crossbars are connected to the left and right sides of the mounting surface of the connecting plate. A slide is fitted on the outside of each assembly crossbar. A steel plate is connected to the bottom of each slide. An installation head is connected to the bottom of each steel plate. A universal ball is engaged on the side of the installation head facing the valve needle. A guide rod is inserted in the middle of the inside of the slide. A rigid spring is fitted on both the outside and inside of the guide rod.

2. The needle valve type anti-deformation hot nozzle according to claim 1, characterized in that: The groove depth is the same as the thickness of the insert plate, and screws are screwed onto both the left and right sides of the insert plate.

3. The needle valve type anti-deformation hot nozzle according to claim 1, characterized in that: The number of grooves and inserts is 3-6 sets, the shape of the mounting head is arc-shaped, and the steel plate is inclined L-shaped.

4. The needle valve type anti-deformation hot nozzle according to claim 1, characterized in that: The outer inner side of the assembly crossbar is equipped with a mounting base, and the left and right ends of the guide rod are respectively connected to the corresponding positions on the inner side of the connecting plate and the mounting base.

5. A needle valve type anti-deformation hot nozzle according to claim 1, characterized in that: The left and right ends of the rigid spring are respectively connected to the corresponding positions on the inner side of the slide and the mounting base, and the number of the universal balls is 1-3 sets.

6. The needle valve type anti-deformation hot nozzle according to claim 1, characterized in that: Angle brackets are connected to the lower outer surface of the mounting cylinder and the upper outer surface of the flow channel plate at corresponding positions. There are 3-6 sets of angle brackets, and the internal parts of the angle brackets are connected by bolt and nut fittings.

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