Anhydrous oil cylinder structure capable of adjusting length of valve needle

Abstract

The utility model relates to the technical field of hot runner molds, in particular to a water-free oil cylinder structure capable of adjusting the length of a valve needle. The hot runner system comprises a hot runner system mold, a valve needle assembly arranged in the hot runner system mold and a driving assembly for driving the valve needle assembly to move up and down, and a cooling water path system is further arranged in the hot runner system mold. The driving assembly comprises a water-free oil cylinder body, a piston assembly, a first adjusting gasket, a second adjusting gasket and a sealing ring, wherein the piston assembly is arranged in the water-free oil cylinder body and can move, the first adjusting gasket and the second adjusting gasket are driven by the piston assembly to move up and down and arranged in the piston assembly, and the sealing ring is arranged on the periphery of the piston assembly. The valve needle assembly is installed in the piston assembly. The utility model has the beneficial effects that the technical scheme adopts the adjustable adjusting gasket to replace the mounting position of the adjusting gasket according to the length requirement, and adopts the adjusting gaskets with different thicknesses, so that the valve needle has different reflecting lengths at the pouring gate position, and the adjustment is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of hot runner molds, in particular to a waterless oil cylinder structure capable of adjusting the length of a valve needle. Background Art

[0002] The integrally mounted hot runner system uses a wire rack to connect the hot runner system with the electrical system, control system, and cooling system. The power and control cables in the electrical system, the piping in the control system, and the piping in the cooling system are connected to the corresponding systems via the wire rack.

[0003] In existing technologies, the valve needle length cannot be adjusted, and the valve needle often needs to be repaired during the mold trial stage. In addition, the nozzle length cannot exceed 1M, so the size requirements of the valve needle are very high.

[0004] Therefore, it is necessary to design a waterless oil cylinder structure with adjustable valve needle length to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a waterless oil cylinder structure with adjustable valve needle length, so as to overcome the above-mentioned deficiencies in the current prior art.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A waterless oil cylinder structure with adjustable valve needle length, which includes a hot runner system mold, a valve needle assembly placed in the hot runner system mold, and a driving assembly for driving the valve needle assembly to move up and down, characterized in that: a cooling water system is also provided in the hot runner system mold, the driving assembly includes a waterless oil cylinder body, a piston assembly placed in the waterless oil cylinder body and capable of moving, a first adjusting gasket driven by the piston assembly to move up and down and as far as the piston assembly, a second adjusting gasket and a sealing ring placed around the piston assembly, the valve needle assembly is installed in the piston assembly, the first adjusting gasket is arranged on the upper part of the valve needle assembly, the second adjusting gasket is sleeved on the valve needle assembly, and is arranged to support the upper part of the valve needle assembly.

[0008] Preferably, a plurality of circulating cooling water channels are provided on the hot runner system mold.

[0009] Preferably, support columns are provided around the bottom of the driving assembly, and the support columns are made of a material with low conductivity.

[0010] The beneficial effects of this utility model are as follows: This technical solution sets a cooling water system on the mold to better meet market demand. The waterless oil cylinder itself has no cooling water feature. The oil cylinder is in direct contact with the mold plate, and heat is transferred from the manifold to the mold plate through heat transfer. The mold plate is designed with a circulating cooling water circuit, and heat conduction removes heat from the oil cylinder through the circulating water circuit. Adjustable adjusting gaskets are used to replace the installation position of the adjusting gasket according to the required length, and adjusting gaskets of different thicknesses are used to adjust the valve needle to different lengths for adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a waterless oil cylinder structure with adjustable valve needle length according to the present invention;

[0012] In the figure: 1. Hot runner system mold; 2. Valve needle assembly; 3. Drive assembly; 4. Cooling water system; 31. Waterless cylinder body; 32. Piston assembly; 33. First adjusting gasket; 34. Second adjusting gasket; 5. Support column. DETAILED DESCRIPTION

[0013] 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.

[0014] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0015] Reference Figure 1 A waterless oil cylinder structure capable of adjusting the length of a valve needle comprises a hot runner system mold 1, a valve needle assembly 2 placed in the hot runner system mold, and a drive assembly 3 for driving the valve needle assembly to move up and down;

[0016] A cooling water system 4 is also provided in the hot runner system mold. In order to facilitate the water circulation of the cooling water system, a plurality of circulating cooling water channels are opened on the hot runner system mold.

[0017] The driving assembly 3 includes a waterless oil cylinder body 31, a piston assembly 32 placed in the waterless oil cylinder body and capable of movement, a first adjustment gasket 33 and a second adjustment gasket 34 driven by the piston assembly to move up and down and positioned in the piston assembly, and a sealing ring placed around the piston assembly;

[0018] The valve needle assembly is installed in the piston assembly;

[0019] The first adjusting gasket 33 is arranged on the upper part of the valve needle assembly, and the second adjusting gasket 34 is sleeved on the valve needle assembly and is arranged to support the upper part of the valve needle assembly.

[0020] The valve needle length adjustable structure mainly consists of a piston, an adjusting gasket, and a valve needle. The valve needle is installed in the piston, and the piston is driven by air pressure or oil pressure to drive the valve needle to open and close the gate. Compared with the ordinary cylinder structure, this structure has adjustable gaskets of different thicknesses added to the upper and lower positions of the valve needle flange. By changing the installation position of the adjusting gasket, the valve needle flange position will also be at different heights, so that the valve needle has different lengths.

[0021] In order to facilitate the installation of the entire drive assembly, support columns 5 are provided around the bottom of the drive assembly. The support columns are made of low-conductivity materials to reduce heat transfer from the diverter plate to the oil cylinder.

[0022] In this implementation, the cylinder is in direct contact with the mold's template, transferring heat from the manifold to the template through heat transfer. A circulating cooling water circuit is designed into the template, which removes heat from the cylinder through heat conduction. Furthermore, the support column connecting the waterless cylinder and the manifold is made of a low-conductivity material to reduce heat transfer from the manifold to the cylinder. Adjustable gaskets of varying thicknesses are added above and below the valve needle flange. By changing the installation position of the adjusting gaskets, the valve needle flange can be positioned at different heights, thereby adjusting the valve needle to varying lengths.

[0023] The benefits of this utility model include a cooling water system installed on the mold to better meet market demand. The waterless oil cylinder itself has no cooling water feature. The oil cylinder is in direct contact with the mold plate, and heat is transferred from the manifold to the mold plate through heat transfer. The mold plate is designed with a circulating cooling water circuit, which removes heat from the oil cylinder through heat conduction. Adjustable adjusting gaskets are used to change the installation position of the adjusting gasket according to the required length, and adjusting gaskets of different thicknesses are used to achieve different reflected lengths of the valve needle at the gate position for adjustment.

[0024] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A waterless oil cylinder structure with adjustable valve needle length, comprising a hot runner system mold, a valve needle assembly disposed within the hot runner system mold, and a drive assembly for driving the valve needle assembly up and down, characterized in that: A cooling water system is also provided in the hot runner system mold. The driving assembly includes a waterless cylinder body, a movable piston assembly placed in the waterless cylinder body, a first adjusting gasket driven by the piston assembly to move up and down and in the piston assembly, a second adjusting gasket and a sealing ring placed around the piston assembly. The valve needle assembly is installed in the piston assembly, the first adjusting gasket is arranged on the upper part of the valve needle assembly, and the second adjusting gasket is sleeved on the valve needle assembly and is arranged to support the upper part of the valve needle assembly.

2. The waterless oil cylinder structure with adjustable valve needle length according to claim 1, characterized in that: A plurality of circulating cooling water channels are provided on the hot runner system mold.

3. The waterless oil cylinder structure with adjustable valve needle length according to claim 1, characterized in that: Support columns are also arranged around the bottom of the driving component, and the support columns are made of low-conductivity material.

Images