Hot runner valve needle adjusting structure

Abstract

The utility model relates to the field of adjusting structures, and discloses a hot runner valve needle adjusting structure which comprises a main body, a feeding block is fixedly arranged on one side of the main body, a pouring pipe is fixedly arranged on one side of the feeding block, a discharging head is fixed on one side of the pouring pipe in a threaded mode, the main body comprises a containing box, and a containing plate is arranged on the inner bottom face of the containing box in a sliding mode. A threaded shaft is rotationally arranged on the lower end face of the containing plate, an air cylinder is clamped to the upper end face of the containing plate, the upper end face of the containing box is sleeved with a threaded rod in a threaded mode, and a connecting plate is rotationally arranged on the lower end face of the threaded rod. During use, the main body is provided with the placing box, the placing plate is slidably arranged on the inner bottom surface of the placing box, the placing plate can be used for placing the air cylinder, the threaded rod is arranged at the upper end of the placing box, the connecting plate is arranged on the lower end surface of the threaded rod, the connecting plate is connected with the extrusion spring, and the lower end of the extrusion spring is fixed with the extrusion plate; and the extruding plate can extrude and fix the air cylinder at the upper end of the placing plate.

Description

Technical Field

[0001] The utility model relates to the field of regulating structures, in particular to a hot runner valve needle regulating structure. Background Art

[0002] The hot runner valve needle is a key component in the hot runner system. It is responsible for controlling the time and flow of plastic melt entering the mold cavity. During the injection molding process, precise control of the valve needle is crucial to ensuring product quality. The hot runner valve needle can be hydraulically driven or pneumatically driven. The opening and closing of the needle valve is achieved through the control of the solenoid valve, thereby controlling the movement of the gate.

[0003] During use, the valve needle of the hot runner needs to continuously fit in and out of the discharge head. Over time, a certain amount of displacement will occur, resulting in a poor closing state between the two. Since the position of the valve needle is offset, the structure connecting the valve needle will also be offset. The existing equipment can only adjust the position of the valve needle, but cannot adjust the position of the connecting structure. Therefore, the adjusted valve needle may not fit the discharge head very well. At the same time, the cylinder part of the existing hot runner valve needle adjustment structure is usually fixed to the box body with threads, which makes it very troublesome to disassemble the cylinder.

[0004] Therefore, those skilled in the art have provided a hot runner valve needle adjustment structure to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art, and the hot runner valve needle adjustment structure proposed is that when the cylinder is damaged, the connecting plate can be moved upward to reduce the pressure of the extrusion plate on the cylinder so that the cylinder can be replaced. After the placement plate inside the main body is moved, the position of the cylinder can be moved, so that the valve needle can adjust its own position.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a hot runner valve needle adjustment structure, comprising a main body, a feed block fixedly provided on one side of the main body, a pouring pipe fixedly provided on one side of the feed block, a discharge head threadedly fixed on one side of the pouring pipe, the main body comprising a placement box, a placement plate slidably provided on the bottom surface of the placement box, and a threaded shaft rotatably provided on the lower end surface of the placement plate;

[0007] The upper end surface of the placement plate is clamped with a cylinder, the upper end surface of the placement box is threadedly sleeved with a threaded rod, the lower end surface of the threaded rod is rotatably provided with a connecting plate, the lower end surface of the connecting plate is fixedly provided with an extrusion spring, and the lower end surface of the extrusion spring is fixedly provided with an extrusion plate.

[0008] Furthermore, the front and rear ends of the feed block are fixedly provided with fixing plates, and the four corners of one side of the two fixing plates are threaded with fixing screws.

[0009] Furthermore, a bearing is fixedly provided on the upper end surface of the threaded shaft, and a valve needle is fixedly provided on the output end of the cylinder.

[0010] Furthermore, a turntable is fixedly provided on the upper end surface of the threaded rod, and telescopic rods are fixedly provided on the four corners of the lower end surface of the connecting plate.

[0011] Furthermore, the discharging head includes a mounting plate, and connecting screws are provided on the four corner threaded sleeves on one side of the mounting plate.

[0012] Furthermore, a discharge port is fixedly provided on one side of the mounting plate.

[0013] Furthermore, a feed pipe is fixedly provided on the upper end surface of the feed block.

[0014] The utility model has the following beneficial effects:

[0015] 1. The hot runner valve needle adjustment structure proposed by the utility model has a placement box in the main body when in use, and a placement plate is slidably provided on the inner bottom surface of the placement box, and the placement plate can place the cylinder, and a threaded rod is provided at the upper end of the placement box, and a connecting plate is provided at the lower end surface of the threaded rod, and an extrusion spring is provided in connection with the connecting plate, and the lower end of the extrusion spring is fixed to the extrusion plate, and the extrusion plate can squeeze and fix the cylinder on the upper end of the placement plate, and the position of the connecting plate inside the placement box can be adjusted when the threaded rod is rotated, and the force of the extrusion plate pressing the cylinder can be increased when the connecting plate moves downward, so that the cylinder remains stable inside the main body, and when the cylinder is damaged, the connecting plate can be moved upward to reduce the pressure of the extrusion plate on the cylinder, making it easy to disassemble the cylinder.

[0016] 2. The hot runner valve needle adjustment structure proposed by the utility model has a placement plate inside the main body for placing the cylinder when in use, and a threaded shaft is rotatably provided at the lower end of the placement plate. The extrusion plate can squeeze the cylinder so that the cylinder can remain stable inside the main body. The cylinder is connected to a valve needle. When the valve needle is used for a long time, it needs to continuously fit in and out of the discharge head. Over time, a certain displacement phenomenon will occur, resulting in the possibility that a good closing state may not be formed between the two. The threaded shaft provided at the lower end of the placement plate can move the placement plate when rotating, and the placement plate can move the position of the cylinder after moving. The movement of the cylinder can adjust the position of the valve needle, so that the valve needle can be in a better closed state with the discharge head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main visual axis side of the utility model;

[0018] Figure 2 This is a schematic diagram of the present invention when viewed from the bottom;

[0019] Figure 3 This is a schematic diagram of the rear axle side of the present invention;

[0020] Figure 4 It is a side view axial schematic diagram of the present invention;

[0021] Figure 5 It is a front cross-sectional schematic diagram of the main structure of the utility model.

[0022] Legend:

[0023] 1. Main body; 2. Feed block; 3. Discharge head; 4. Feed pipe; 5. Fixing plate; 6. Fixing screw; 7. Pouring pipe; 101. Placement box; 102. Telescopic rod; 103. Cylinder; 104. Connecting plate; 105. Extrusion plate; 106. Threaded rod; 107. Turntable; 108. Placement plate; 109. Bearing; 110. Threaded shaft; 111. Valve needle; 112. Extrusion spring; 301. Mounting plate; 302. Connecting screw; 303. Discharge port. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1-5 The utility model provides an embodiment: a hot runner valve needle adjustment structure, including a main body 1, a feed block 2 is fixedly provided on one side of the main body 1, a pouring pipe 7 is fixedly provided on one side of the feed block 2, a discharge head 3 is threadedly fixed on one side of the pouring pipe 7, and a fixing plate 5 is fixedly provided at the front and rear ends of the feed block 2, and fixing screws 6 are threadedly provided at the four corners of one side of the two fixing plates 5, and a feed pipe 4 is fixedly provided on the upper end surface of the feed block 2.

[0026] Specifically, a feed block 2 is provided on one side of the main body 1, and a feed pipe 4 is provided on the upper end of the feed block 2. The feed pipe 4 can transfer the hot-melt raw material to the interior of the feed block 2. The feed block 2 is connected to the pouring pipe 7. The pouring pipe 7 can transfer the raw material to the discharge head 3. The discharge head 3 and the valve needle 111 of the main body 1 are fitted together. After the valve needle 111 and the discharge head 3 are separated, the discharge head 3 can inject the raw material into the mold.

[0027] Reference Figure 5The main body 1 includes a placement box 101, a placement plate 108 is slidingly provided on the bottom surface of the placement box 101, a threaded shaft 110 is rotatably provided on the lower end surface of the placement plate 108, and a cylinder 103 is clamped on the upper end surface of the placement plate 108. A threaded rod 106 is threadedly sleeved on the upper end surface of the placement box 101, and a connecting plate 104 is rotatably provided on the lower end surface of the threaded rod 106. An extrusion spring 112 is fixedly provided on the lower end surface of the connecting plate 104, and an extrusion plate 105 is fixedly provided on the lower end surface of the extrusion spring 112. A bearing 109 is fixedly provided on the upper end surface of the threaded shaft 110, a valve needle 111 is fixedly provided on the output end of the cylinder 103, a turntable 107 is fixedly provided on the upper end surface of the threaded rod 106, and a telescopic rod 102 is fixedly provided on the four corners of the lower end surface of the connecting plate 104.

[0028] Specifically, when in use, the main body 1 includes a placement box 101, and a placement plate 108 is provided on the inner bottom surface of the placement box 101. The lower end of the placement plate 108 is connected to the threaded shaft 110, so that when the threaded shaft 110 is rotated, the placement plate 108 can be moved up and down, and the upper end of the placement plate 108 can place the cylinder 103. The upper end of the placement box 101 is provided with a threaded rod 106, and the lower end of the threaded rod 106 is provided with a connecting plate 104. The lower end of the connecting plate 104 is fixed with an extrusion spring 112. The lower end of the extrusion spring 112 is fixed to the extrusion plate 105, and the extrusion plate 105 can squeeze the cylinder 103. When the threaded rod 106 is rotated downward, the connecting plate 104 can be moved downward. 04 Moving downward can allow the extrusion spring 112 to squeeze the extrusion plate 105, allowing the extrusion plate 105 to apply greater force to the cylinder 103, so that the cylinder 103 can be more stable at the upper end of the placement plate 108. The cylinder 103 is connected to the valve needle 111. When the valve needle 111 is used for a long time, it needs to continuously fit in and out of the discharge head 3. Over time, a certain displacement phenomenon will occur, resulting in the possibility of a poor closing state between the two. Rotating the threaded shaft 110 at the lower end of the placement plate 108 can make the placement plate 108 move up and down. The movement of the placement plate 108 can move the cylinder 103, so that the cylinder 103 can adjust its own position, making the valve needle 111 and the discharge head 3 fit more tightly.

[0029] Reference Figure 2 The discharge head 3 includes a mounting plate 301 , and connecting screws 302 are provided on the four corner thread sleeves of one side of the mounting plate 301 , and a discharge port 303 is fixedly provided on one side of the mounting plate 301 .

[0030] Specifically, when in use, the discharge head 3 has a mounting plate 301, and the mounting plate 301 is connected to the discharge port 303. The discharge port 303 fits the valve needle 111 inside the main body 1. After the valve needle 111 and the discharge port 303 are separated, the raw material inside the pouring pipe 7 can enter the interior of the mold. The mounting plate 301 is connected to the pouring pipe 7 by connecting screws 302, so that the discharge head 3 can be replaced when it is damaged.

[0031] Working principle: The main body 1 includes a placement box 101, a placement plate 108 is slidably provided on the bottom surface of the placement box 101, and a cylinder 103 is clamped on the upper end surface of the placement plate 108. A threaded rod 106 is provided at the upper end of the placement box 101, and a connecting plate 104 is provided at the lower end of the threaded rod 106. An extrusion spring 112 is fixed to the lower end of the connecting plate 104. The lower end of the extrusion spring 112 is fixed to the extrusion plate 105, and the extrusion plate 105 can squeeze the cylinder 103;

[0032] When the threaded rod 106 rotates downward, the connecting plate 104 can be moved downward. The downward movement of the connecting plate 104 can allow the extrusion spring 112 to squeeze the extrusion plate 105, allowing the extrusion plate 105 to apply a greater force to the cylinder 103, making the cylinder 103 more firmly arranged at the upper end of the placement plate 108. When the cylinder 103 is damaged, the threaded rod 106 is rotated in the opposite direction to move the connecting plate 104 upward. The upward movement of the connecting plate 104 can reduce the extrusion force of the extrusion spring 112 on the extrusion plate 105, and the cylinder 103 can be removed from the upper end of the placement plate 108 so that the cylinder 103 can be replaced.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hot runner valve needle adjustment structure, comprising a main body (1), characterized in that: A feed block (2) is fixedly provided on one side of the main body (1), a pouring pipe (7) is fixedly provided on one side of the feed block (2), a discharge head (3) is threadedly fixed on one side of the pouring pipe (7), the main body (1) includes a placement box (101), a placement plate (108) is slidably provided on the bottom surface of the placement box (101), and a threaded shaft (110) is rotatably provided on the lower end surface of the placement plate (108); The upper end surface of the placement plate (108) is clamped with a cylinder (103), the upper end surface of the placement box (101) is threadedly sleeved with a threaded rod (106), the lower end surface of the threaded rod (106) is rotatably provided with a connecting plate (104), the lower end surface of the connecting plate (104) is fixedly provided with an extrusion spring (112), and the lower end surface of the extrusion spring (112) is fixedly provided with an extrusion plate (105).

2. The hot runner valve needle adjustment structure according to claim 1, characterized in that: The front and rear ends of the feed block (2) are fixedly provided with fixing plates (5), and fixing screws (6) are threadedly provided at the four corners of one side of the two fixing plates (5).

3. The hot runner valve needle adjustment structure according to claim 1, characterized in that: A bearing (109) is fixedly provided on the upper end surface of the threaded shaft (110), and a valve needle (111) is fixedly provided on the output end of the cylinder (103).

4. The hot runner valve needle adjustment structure according to claim 1, characterized in that: A turntable (107) is fixedly provided on the upper end surface of the threaded rod (106), and telescopic rods (102) are fixedly provided on the four corners of the lower end surface of the connecting plate (104).

5. The hot runner valve needle adjustment structure according to claim 1, characterized in that: The discharging head (3) comprises a mounting plate (301), and connecting screws (302) are provided on the four corner threaded sleeves on one side of the mounting plate (301).

6. The hot runner valve needle adjustment structure according to claim 5, characterized in that: A discharge port (303) is fixedly provided on one side of the mounting plate (301).

7. The hot runner valve needle adjustment structure according to claim 1, characterized in that: A feed pipe (4) is fixedly provided on the upper end surface of the feed block (2).

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