Cylinder valve needle guide ring

Abstract

The utility model relates to hot runner needle valve technical field discloses a kind of cylindrical valve needle guide ring, including nozzle sleeve, the inner wall sliding connection of nozzle sleeve has valve needle guide ring, the inner wall sliding connection of valve needle guide ring has valve needle, the inner wall of nozzle sleeve is equipped with nozzle sleeve kit, the outer wall of nozzle sleeve kit is equipped with connecting piece, the outer wall of valve needle is provided with multiple stabilizing blocks one, the inner wall of nozzle sleeve is provided with multiple stabilizing blocks two, the inner wall of valve needle guide ring is equipped with multiple stabilizing grooves one, the outer wall of valve needle guide ring is equipped with multiple stabilizing grooves two, the top of valve needle guide ring is equipped with cleaning assembly, the inner wall of valve needle guide ring is provided with lubricating assembly, in the utility model, four stabilizing grooves one are set in valve needle guide ring inner wall, four valve needle guide rings are set in valve needle guide ring outer wall, let stabilizing block one and stabilizing block two respectively be clamped in stabilizing groove one and stabilizing groove two inner wall, reach the effect that valve needle is stably slid up and down.

Description

Technical Field

[0001] This utility model relates to the field of hot runner needle valve technology, and in particular to a cylindrical valve needle guide ring. Background Technology

[0002] The cylindrical valve needle guide ring is a key component in hot runner needle valve systems. Its main function is to guide the linear movement of the valve needle, ensuring that it is coaxial with the gate, thereby reducing wear, leakage and improving injection efficiency.

[0003] The guide ring achieves motion control through precise cooperation with the valve needle, but the perfectly circular inner hole cannot restrict the circumferential rotation of the valve needle, causing wear on one side of the sealing surface, displacement of the relative position of the valve needle and the gate, uneven wear of the sealing surface, and ultimately leading to sealant failure and leakage. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a cylindrical valve needle guide ring, which aims to improve the problem that a purely circular inner hole cannot restrict the circumferential rotation of the valve needle, resulting in wear on one side of the sealing surface.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cylindrical valve needle guide ring, including a nozzle sleeve, a valve needle guide ring slidably connected to the inner wall of the nozzle sleeve, a valve needle slidably connected to the inner wall of the valve needle guide ring, a nozzle assembly installed on the inner wall of the nozzle sleeve, a connector installed on the outer wall of the nozzle assembly, a plurality of stabilizing blocks I on the outer wall of the valve needle, a plurality of stabilizing blocks II on the inner wall of the nozzle sleeve, a plurality of stabilizing grooves I on the inner wall of the valve needle guide ring, a plurality of stabilizing grooves II on the outer wall of the valve needle guide ring, a cleaning component installed at the top of the valve needle guide ring, and a lubrication component installed on the inner wall of the valve needle guide ring.

[0006] The above technical solution involves fixing the nozzle sleeve and connector with the nozzle kit, which secures the valve needle guide ring to the inner wall of the nozzle sleeve and allows the valve needle to pass through the inner wall of the valve needle guide ring, making its outer wall slide in connection with the inner wall of the valve needle guide ring. This aligns the valve needle guide ring with the hole at the bottom of the connector, facilitating valve needle assembly.

[0007] Preferably, the lubrication assembly includes lubrication grooves, a plurality of the lubrication grooves being formed on the inner wall of the valve needle guide ring and communicating with a plurality of stabilizing grooves, and solid grease being placed on the inner wall of the lubrication grooves.

[0008] Preferably, the cleaning component includes a placement block, which is slidably connected to the top end of the valve needle guide ring. The top end of the placement block is fixedly connected with a plurality of fixing teeth I, and the top end of the placement block is slidably connected with a magnetic block. The bottom end of the placement block is fixedly connected with a plurality of fixing teeth II.

[0009] Preferably, the tips of the multiple fixed teeth 2 are slidably connected to the bottom end of the valve needle guide ring, and the tips of the multiple fixed teeth 1 are slidably connected to the outer wall of the magnetic block.

[0010] Preferably, the valve needle guide ring is slidably connected to the outer wall of the nozzle assembly, and the valve needle is slidably connected to the inner wall of the connector.

[0011] Preferably, the first stabilizing block is slidably connected to the inner wall of the first stabilizing groove, and the second stabilizing block is slidably connected to the inner wall of the second stabilizing groove.

[0012] This utility model has the following beneficial effects: 1. In this utility model, four stabilizing grooves are formed on the inner wall of the valve needle guide ring, and four valve needle guide rings are formed on the outer wall of the valve needle guide ring, so that stabilizing block one and stabilizing block two are respectively stuck on the inner wall of stabilizing groove one and stabilizing groove two, thereby achieving the effect of stable up and down sliding of the valve needle.

[0013] 2. In this utility model, four fixed teeth slide on the outer wall of the inner ring of the valve needle guide ring, so that the tooth ends are stuck at the bottom of the valve needle guide ring, and the placement block is fixed to the valve needle guide ring. The magnetic block is stuck between the four fixed teeth, so that the magnetic block is fixed and the lubrication groove adsorbs the debris on the valve needle, thereby avoiding the wear of the valve needle. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of a cylindrical valve needle guide ring proposed in this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a partial cross-sectional view of a cylindrical valve needle guide ring proposed in this utility model; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 This is an exploded view of a cylindrical valve needle guide ring proposed in this utility model.

[0015] Legend: 1. Nozzle sleeve; 2. Nozzle assembly; 3. Connector; 4. Valve needle; 5. Valve needle guide ring; 6. Stabilizing block one; 7. Stabilizing block two; 8. Stabilizing groove one; 9. Stabilizing groove two; 10. Placement block; 11. Fixing tooth one; 12. Fixing tooth two; 13. Magnetic block; 14. Lubrication groove. Detailed Implementation

[0016] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Example 1: Reference Figures 1-4 The present invention provides an embodiment of a cylindrical valve needle guide ring, comprising a nozzle sleeve 1, a valve needle guide ring 5 slidably connected to the inner wall of the nozzle sleeve 1, a valve needle 4 slidably connected to the inner wall of the valve needle guide ring 5, a nozzle assembly 2 installed on the inner wall of the nozzle sleeve 1, a connector 3 installed on the outer wall of the nozzle assembly 2, a plurality of stabilizing blocks 6 on the outer wall of the valve needle 4, a plurality of stabilizing blocks 7 on the inner wall of the nozzle sleeve 1, a plurality of stabilizing grooves 8 on the inner wall of the valve needle guide ring 5, a plurality of stabilizing grooves 9 on the outer wall of the valve needle guide ring 5, a cleaning component installed at the top of the valve needle guide ring 5, and a lubrication component installed on the inner wall of the valve needle guide ring 5.

[0018] Specifically, the valve needle guide ring 5 slides on the inner wall of the nozzle sleeve 1, causing the second stabilizing block 7 on the nozzle sleeve 1 to be locked in the inner wall of the second stabilizing groove 9, thus stabilizing the valve needle guide ring 5. The nozzle assembly 2 is connected to the nozzle sleeve 1, fixing the valve needle guide ring 5 to the inner wall of the nozzle sleeve 1. The valve needle 4 slides on the inner wall of the valve needle guide ring 5, and the first stabilizing block 6 contacts the first stabilizing groove 8, allowing the valve needle 4 to slide stably within the valve needle guide ring 5, thereby preventing the valve needle 4 from rotating.

[0019] Reference Figure 1 , Figure 2 and Figure 5 The cleaning component includes a placement block 10, which is slidably connected to the top end of the valve needle guide ring 5. Multiple fixing teeth 11 are fixedly connected to the top end of the placement block 10. A magnetic block 13 is slidably connected to the top end of the placement block 10. Multiple fixing teeth 12 are fixedly connected to the bottom end of the placement block 10. The tips of the multiple fixing teeth 12 are slidably connected to the bottom end of the valve needle guide ring 5. The tips of the multiple fixing teeth 11 are slidably connected to the outer wall of the magnetic block 13.

[0020] Specifically, four fixing teeth 11 are fixedly connected to the top of the placement block 10, and four fixing teeth 12 are fixedly connected to the bottom of the placement block 10. The magnetic block 13 is clamped in the teeth of the four fixing teeth 11 and fixed to the top of the placement block 10. Then, the placement block 10 is moved so that the four fixing teeth 12 slide on the outer wall of the inner ring of the valve needle guide ring 5, so that the tooth ends are clamped to the bottom of the valve needle guide ring 5, thus fixing the placement block 10 to the top of the valve needle guide ring 5. The connecting piece 3 is fixed above the valve needle guide ring 5 through the placement block 10. The magnetic block 13 can use magnetic force to attract the debris generated by the friction between the valve needle 4 and the valve needle guide ring 5, so as to avoid excessive accumulation of debris and wear of the valve needle 4.

[0021] Reference Figure 1 The valve needle guide ring 5 is slidably connected to the outer wall of the nozzle assembly 2, and the valve needle 4 is slidably connected to the inner wall of the connector 3.

[0022] Specifically, the top of the nozzle kit 2 is installed on the inner wall of the bottom of the nozzle sleeve 1 and contacts the valve needle guide ring 5, so that the valve needle guide ring 5 is fixed and the valve needle 4 passes through the hole at the bottom of the connector 3 through the valve needle guide ring 5, thereby ensuring the accuracy of the valve needle 4 within the nozzle sleeve 1, nozzle kit 2 and connector 3.

[0023] Reference Figure 4 and Figure 5 Stabilizing block 6 is slidably connected to the inner wall of stabilizing groove 8, and stabilizing block 7 is slidably connected to the inner wall of stabilizing groove 9.

[0024] Specifically, the stabilizing block 6 and the stabilizing groove 8 can prevent the valve needle 4 from rotating, and the stabilizing block 7 and the stabilizing groove 9 can prevent the valve needle 4 from driving the valve needle guide ring 5 to rotate on the inner wall of the nozzle sleeve 1, thus avoiding wear on one side of the inner wall of the valve needle guide ring 5 due to the circumferential rotation of the valve needle 4.

[0025] Example 2: Reference Figure 5 This embodiment is based on the description of Embodiment 1. The grease is easily washed away by the adhesive. This embodiment improves on this point. The lubrication component includes a lubrication groove 14. Multiple lubrication grooves 14 are opened on the inner wall of the valve needle guide ring 5 and communicate with multiple stabilizing grooves 8. Solid grease is placed on the inner wall of the lubrication groove 14.

[0026] Specifically, four lubrication grooves 14 are opened on the inner wall of the valve needle guide ring 5, so that the four lubrication grooves 14 are spirally connected to the four stabilizing grooves 8, and solid grease is pre-injected into the grooves of the lubrication grooves 14 to form a self-lubricating oil storage structure, so as to prevent the grease from being washed away by the rubber material.

[0027] Working principle: Apply grease to the lubrication groove 14 on the inner wall of the valve needle guide ring 5. Place the valve needle guide ring 5 inside the nozzle sleeve 1 and fix it inside the nozzle sleeve 1 by the nozzle assembly 2. Then, insert the valve needle 4 into the inner wall of the valve needle guide ring 5 and the connector 3 from the other end of the nozzle sleeve 1. This causes the stabilizing block 6 on the valve needle 4 to be locked in the stabilizing groove 8, allowing the valve needle 4 to slide stably within the valve needle guide ring 5, thus preventing the valve needle 4 from rotating.

[0028] Before placing the nozzle sleeve 1 on the valve needle guide ring 5, place the placement block 10 at the bottom of the valve needle guide ring 5, and fix the placement block 10 on the valve needle guide ring 5 by fixing tooth 2 12. The magnetic block 13 is fixed on the placement block 10 by fixing tooth 11, and the magnetic block 13 is fixed above the valve needle guide ring 5. The magnetic block 13 can attract the debris on the valve needle 4 to the magnetic block 13 by magnetic force, so as to avoid the wear of the valve needle 4.

[0029] 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 cylindrical valve needle guide ring, comprising a nozzle sleeve (1), characterized in that: The inner wall of the nozzle sleeve (1) is slidably connected to a valve needle guide ring (5), the inner wall of the valve needle guide ring (5) is slidably connected to a valve needle (4), the inner wall of the nozzle sleeve (1) is equipped with a nozzle kit (2), the outer wall of the nozzle kit (2) is equipped with a connector (3), the outer wall of the valve needle (4) is provided with multiple stabilizing blocks (6), the inner wall of the nozzle sleeve (1) is provided with multiple stabilizing blocks (7), the inner wall of the valve needle guide ring (5) is provided with multiple stabilizing grooves (8), the outer wall of the valve needle guide ring (5) is provided with multiple stabilizing grooves (9), the top of the valve needle guide ring (5) is equipped with a cleaning component, and the inner wall of the valve needle guide ring (5) is provided with a lubrication component.

2. The cylindrical valve needle guide ring according to claim 1, characterized in that: The lubrication assembly includes a lubrication groove (14), a plurality of the lubrication grooves (14) being formed on the inner wall of the valve needle guide ring (5) and communicating with a plurality of stabilizing grooves (8), and solid grease being placed on the inner wall of the lubrication groove (14).

3. A cylindrical valve needle guide ring according to claim 1, characterized in that: The cleaning assembly includes a placement block (10), which is slidably connected to the top end of the valve needle guide ring (5). The top end of the placement block (10) is fixedly connected with a plurality of fixing teeth one (11), the top end of the placement block (10) is slidably connected with a magnetic block (13), and the bottom end of the placement block (10) is fixedly connected with a plurality of fixing teeth two (12).

4. A cylindrical valve needle guide ring according to claim 3, characterized in that: The tooth ends of multiple fixed teeth two (12) are slidably connected to the bottom end of the valve needle guide ring (5), and the tooth ends of multiple fixed teeth one (11) are slidably connected to the outer wall of the magnetic block (13).

5. A cylindrical valve needle guide ring according to claim 1, characterized in that: The valve needle guide ring (5) is slidably connected to the outer wall of the nozzle assembly (2), and the valve needle (4) is slidably connected to the inner wall of the connector (3).

6. A cylindrical valve needle guide ring according to claim 1, characterized in that: The first stabilizing block (6) is slidably connected to the inner wall of the first stabilizing groove (8), and the second stabilizing block (7) is slidably connected to the inner wall of the second stabilizing groove (9).

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