Nozzle structure and plastic injection molding system

Abstract

The utility model discloses a nozzle structure and a plastic injection molding system. One end of the nozzle body is provided with an input port, and the other end of the nozzle body is provided with an output port. The nozzle main body is sequentially provided with a mixing channel and an output channel between the input port and the output port; a single mixing channel is provided; the input end of the mixing channel is communicated with the input port, and the output end of the mixing channel is communicated with the input end of the output channel; the output end of the output channel is communicated with the output port; the output channel is located in a middle shaft of the nozzle body. And the two ends of the mixing channel are vertically communicated with one side part of the output channel at the output end after being subjected to multi-section bending. According to the scheme, the problem that materials are mixed unevenly due to the fact that an existing nozzle structure adopts multiple mixing channels is solved.

Description

Technical Field

[0001] The utility model relates to the field of nozzles, in particular to a nozzle structure and a plastic injection molding system. Background Art

[0002] In the existing nozzle structure, the material discharge rate in the nozzle will be further increased by setting multiple material transfer channels inside the nozzle, such as Figure 6 After the material is input into the input port of the nozzle, it is gathered from different material transfer channels of the input port to the discharge channel. However, since the material is input into different material transfer channels, the physical and chemical properties of the material are different, and the materials output from multiple material transfer channels are in different states when mixed, which will cause differences in the material mixing, resulting in uneven mixing, and thus the material will be stratified when mixed; especially for high-viscosity materials, high-viscosity materials are difficult to mix without the action of external force, and the uneven mixing phenomenon will be more obvious if multiple material transfer channels are used to divert them. Utility Model Content

[0003] The purpose of the utility model is to provide a nozzle structure, which inputs materials into an output channel inside a nozzle body through a single mixing channel, so that the materials can be introduced into the output channel in a vertical direction, and after being mixed at the input end of the output channel, they are output outside the nozzle body along the output channel.

[0004] The utility model also provides a plastic injection molding system, which is provided with the above-mentioned nozzle structure.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A nozzle structure comprises: a nozzle body;

[0007] An input port is provided at one end of the nozzle body, and an output port is provided at the other end of the nozzle body; a mixing channel and an output channel are sequentially provided between the input port and the output port;

[0008] The mixing channel is single; the input end of the mixing channel is connected to the input port, and the output end of the mixing channel is connected to the input end of the output channel; the output end of the output channel is connected to the output port; the output channel is located on the central axis of the nozzle body; and the two ends of the mixing channel are vertically connected to one side of the output channel at the output end after multiple bends.

[0009] Preferably, it also includes: a valve needle;

[0010] The valve needle is arranged in the output channel and extends along the length direction of the output channel.

[0011] Further optimized, the valve needle is movably mounted on the output channel and moves along the extension direction of the output channel;

[0012] The outer side surface of the nozzle body is provided with a driving opening between the input end and the output end of the mixing channel, and the opening of the driving opening is exposed on the outer side surface of the nozzle body; the driving end of the valve needle extends out of the output channel and is exposed from the driving opening.

[0013] Further optimized, it also includes: a drive component;

[0014] The drive assembly is arranged on the outside of the nozzle body; the nozzle body is provided with a valve movable port between the drive opening and the input end of the output channel; the valve needle can be movably limited at the valve movable port; the output end of the drive assembly is connected to the valve needle, for driving the valve needle to move to the drive opening.

[0015] Further optimized, the driving assembly includes: a support plate, a driving seesaw and a linear drive;

[0016] The support plate is arranged on the nozzle body, and the support plate is provided with a rotating seat; the driving seesaw is swingably installed on the rotating seat between the two ends; one end of the driving seesaw is connected to the end of the valve needle at the driving opening, and the output end of the linear driver is rotatably connected to the other end of the driving seesaw; the linear driver is used to drive one end of the driving seesaw to move linearly, drive the driving seesaw to swing with the rotating seat as a fulcrum, so that the driving seesaw swings and drives the valve needle to move linearly in the output channel.

[0017] In a further optimized embodiment, the linear drive is a pneumatic cylinder or an oil cylinder.

[0018] Further optimized, one end of the support plate extends into the drive opening and is fixed to the inner wall of the drive opening; the lower surface of the other end of the support plate is connected to the linear drive; the output end of the linear drive passes upward through the plate opening of the support plate and is connected to the drive seesaw.

[0019] Further optimized, the driving assembly further includes: a guide member;

[0020] The support plate is provided with a guide groove; the guide member is installed in the guide groove; the guide member extends out of the guide groove through a side shaft and is rotatably connected to the driving rocker; the guide member is connected to the valve needle; the guide member is limited and moved in the guide groove, driving the valve needle to move along the extension direction of the guide groove.

[0021] Further optimized, the mixing channel includes: an inclined section, a vertical section and a horizontal section in sequence;

[0022] The input port, the inclined section, the vertical section, the horizontal section and the output channel are connected in sequence;

[0023] The inclined section is arranged obliquely; the vertical section is arranged vertically; the horizontal section is arranged horizontally and vertically connected to a side portion of the output channel; and the driving opening is arranged in a surrounding range among the inclined section, the vertical section and the horizontal section.

[0024] A plastic injection molding system is provided with the above-mentioned nozzle structure.

[0025] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0026] The present solution provides a nozzle structure, which inputs material into an output channel inside a nozzle body through a single mixing channel, so that the material can be transmitted into the output channel in a vertical direction, and after being mixed at the input end of the output channel, it is output outside the nozzle body along the output channel, thereby solving the problem of uneven material mixing caused by the use of multiple mixing channels in the existing nozzle structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic cross-sectional structure diagram of one embodiment of a nozzle structure;

[0028] Figure 2 It is a structural schematic diagram of one embodiment of the nozzle structure;

[0029] Figure 3 is a schematic cross-sectional structure diagram of one embodiment of a nozzle body;

[0030] Figure 4 is a schematic cross-sectional structure diagram of one embodiment of a nozzle structure;

[0031] Figure 5 is a schematic diagram of the structure of one embodiment of a drive assembly;

[0032] Figure 6 It is a structural schematic diagram of the nozzle structure of the prior art.

[0033] in:

[0034] Nozzle body 1; valve needle 2; drive assembly 3;

[0035] Input port 11; output port 12; mixing channel 13, output channel 14; drive opening 15; valve movable port 16; inclined section 131, vertical section 132 and horizontal section 133;

[0036] Support plate 31, driving rocker plate 32, linear drive 33; guide member 34;

[0037] Rotating seat 311; guiding groove 312; side shaft 341. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", "inner side", "outer side", "inner end", "outer end", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features, which are used to distinguish and describe the features, without distinction of order or importance. In the description of the present utility model, unless otherwise specified, "multiple" means more than two.

[0040] like Figure 1-6 , a nozzle structure, comprising: a nozzle body 1;

[0041] An input port 11 is provided at one end of the nozzle body 1, and an output port 12 is provided at the other end of the nozzle body 1; a mixing channel 13 and an output channel 14 are provided in sequence between the input port 11 and the output port 12;

[0042] The mixing channel 13 is single; the input end of the mixing channel 13 is connected to the input port 11, and the output end of the mixing channel 13 is connected to the input end of the output channel 14; the output end of the output channel 14 is connected to the output port 12; the output channel 14 is located on the central axis of the nozzle body 1; the two ends of the mixing channel 13 are bent in multiple sections and vertically connected to a side of the output channel 14 at the output end.

[0043] The present solution provides a nozzle structure, which inputs materials into the output channel 14 inside the nozzle body 1 through a single mixing channel 13, so that the materials can be transmitted into the output channel 14 in a vertical direction, and after being mixed at the input end of the output channel 14, they are output outside the nozzle body 1 along the output channel 14, thereby solving the problem of uneven material mixing caused by the use of multiple mixing channels 13 in the existing nozzle structure.

[0044] Specifically, the input port 11, the mixing channel 13, the output channel 14 and the output port 12 of the nozzle body 1 are connected in sequence; the two ends of the mixing channel 13 are connected to the output channel 14 after multiple bends, which can extend the transmission path of the material before the input and output channels 14 and improve the mixing uniformity; in particular, the material can be offset at the bending position to slow down its output speed, thereby avoiding the problem of the valve needle 2 being offset due to the impact on the valve needle 2 at an excessively high speed when outputting the mixing channel 13; on the other hand, the multiple bends of the mixing channel 13 can be used to adjust the direction of the output end of the mixing channel 13, thereby ensuring that the output end of the mixing channel 13 is just connected to one side of the output channel 14 at a vertical angle; in this way, when the material is output from the mixing channel 13 to the output channel 14, the material will directly impact the side wall of the output channel 14 opposite to the input end, which can not only reduce the speed of the material when entering the output channel 14, so that the material can be uniformly output along the inner wall of the output channel 14 later, but also improve the mixing uniformity during the impact, so that the material is mainly Effective mixing is performed between the input end and the output end of the output channel 14; the present solution uses a single mixing channel 13 to input material to the output channel 14. Compared with the prior art of multiple mixing channels 13, the present solution can make the path of the material flowing through the nozzle body 1 consistent, so that the material is mixed evenly, and can prevent the problem of uneven mixing when multiple mixing channels 13 output materials to the output channel 14 at the same time; especially for high-viscosity materials, since the materials pass through multiple mixing channels 13, each mixing channel 13 is in a different environment, such as different lengths, different angles or different temperatures, etc., resulting in different mixing states of the materials output from the multiple mixing channels 13, which will cause differences in the mixing of the materials, resulting in uneven mixing; for example, when there are multiple mixing channels 13, there must be one mixing channel 13 that is closer to the input port 11 and another mixing channel 13 that is closer to the output port 12, and the paths through which the materials flow are different, resulting in differences in the mixing of the materials, and then resulting in uneven mixing. The present solution uses a single mixing channel 13, which can make the material pass through the nozzle body 1 in the same path, and can hit the inner wall of the output channel 14 when entering the output channel 14 to improve the mixing uniformity, thereby ensuring the mixing uniformity of the material and solving the problem of uneven material mixing caused by the existing nozzle structure using multiple mixing channels 13.

[0045] Preferably, it also includes: a valve needle 2;

[0046] The valve needle 2 is disposed in the output channel 14 and extends along the length direction of the output channel 14 .

[0047] The valve needle 2 is a well-known structure in the known nozzles, and is used to control the on / off state of the output port 12 of the nozzle body 1. In this solution, multiple bending sections are arranged in the mixing channel 13, thereby reducing the speed of the material output outside the mixing channel 13, thereby reducing the impact of the material impacting the valve needle 2 and reducing the degree of deviation of the valve needle 2; at the same time, the mixing channel 13 is single, and the material output outside the mixing channel 13 has less impact on the valve needle 2, thereby reducing the degree of deviation of the valve needle 2.

[0048] Preferably, the valve needle 2 is movably mounted on the output channel 14 and moves along the extension direction of the output channel 14;

[0049] The outer side surface of the nozzle body 1 is provided with a driving opening 15 between the input end and the output end of the mixing channel 13, and the opening of the driving opening 15 is exposed on the outer side surface of the nozzle body 1; the driving end of the valve needle 2 extends out of the output channel 14 and is exposed from the driving opening 15.

[0050] The valve needle 2 can be adjusted through a driving opening 15 exposed on the outer side of the nozzle body 1. When the valve needle 2 needs to be driven to move, the driving end of the valve needle 2 in the driving opening 15 can be manually adjusted or mechanically and automatically adjusted to drive the valve needle 2 to move along the extension direction of the output channel 14, thereby making the valve needle 2 open or close the output port 12.

[0051] Preferably, it also includes: a driving component 3;

[0052] The driving component 3 is arranged on the outside of the nozzle body 1; the nozzle body 1 is provided with a valve movable port 16 between the driving opening 15 and the input end of the output channel 14; the valve needle 2 can be movably limited at the valve movable port 16; the output end of the driving component 3 is connected to the valve needle 2, and is used to drive the valve needle 2 to move to the driving opening 15.

[0053] The drive opening 15 is arranged between the input end and the output end of the mixing channel 13. Since the valve needle 2 can be arranged at the input end of the output channel 14, the actual position of the valve needle 2 is mainly in the output channel 14. Under the limiting effect of the valve movable port 16 on the valve needle 2, the impact of the plastic on the valve needle 2 can be reduced, thereby reducing the problem of the position of the valve needle 2 being offset after being impacted. Furthermore, the drive assembly 3 is located outside the nozzle body 1, and the drive opening 15 is located within the distribution range of the multi-section bending channel of the mixing channel 13, so that the input port 11 of the nozzle body 1 and the drive source of the valve needle 2 are avoided. The nozzle body 1 is set as the input port 11 at any position of the mixing channel 13, which will not limit the installation or drive of the drive assembly 3, thereby avoiding interference with the material input and the activity of the valve needle 2.

[0054] Preferably, the driving assembly 3 comprises: a support plate 31, a driving seesaw 32 and a linear drive 33;

[0055] The support plate 31 is arranged on the nozzle body 1, and the support plate 31 is provided with a rotating seat 311; the driving seesaw 32 is swingably installed on the rotating seat 311 between the two ends; one end of the driving seesaw 32 is connected to the valve needle 2 at one end of the driving opening 15, and the output end of the linear driver 33 is rotatably connected to the other end of the driving seesaw 32; the linear driver 33 is used to drive one end of the driving seesaw 32 to move linearly, drive the driving seesaw 32 to swing with the rotating seat 311 as the fulcrum, so that the driving seesaw 32 swings and drives the valve needle 2 to move linearly in the output channel 14.

[0056] In one of the most optimal embodiments, the present solution uses a "seesaw" structure to drive the valve needle 2 to move; specifically, the linear actuator 33 drives one end of the driving seesaw 32 to move linearly, thereby driving the two ends of the driving seesaw 32 to rotate relative to each other on the rotating seat 311, and then driving the other end of the driving seesaw 32 to tilt up or down; the driving seesaw 32 can drive the valve needle 2 to separate from the opening of the discharge nozzle when the end away from the linear actuator 33 is tilted up, and can drive the valve needle 2 to block the opening of the discharge nozzle when the end away from the linear actuator 33 is lowered. In this way, the present solution only needs to set a "seesaw" structure on one side of the nozzle body 1 to achieve control of the valve needle 2, and can avoid the problem of interference with the nozzle body 1 and limited feeding caused by directly connecting one end of the valve needle 2 to the linear actuator 33.

[0057] Preferably, the linear drive 33 is a pneumatic cylinder or an oil cylinder.

[0058] In this solution, a cylinder or an oil cylinder can be used as the linear actuator 33; the cylinder has two output states, which can drive the valve needle 2 to move downward to block the output port 12 of the nozzle body 1 in the extended state, and can drive the valve needle 2 to move upward to be separated from the output port 12 of the nozzle body 1 in the retracted state. The oil cylinder can be used to drive the valve needle 2 to reciprocate, with small transmission clearance and smooth movement.

[0059] Preferably, one end of the support plate 31 extends into the drive opening 15 and is fixed to the inner wall of the drive opening 15; the lower surface of the other end of the support plate 31 is connected to the linear driver 33; the output end of the linear driver 33 passes upward through the plate opening of the support plate 31 and is connected to the drive rocker 32.

[0060] The support plate 31 is connected to the inner wall of the driving opening 15 through the lower surface, and the upper surface of the support plate 31 is left empty, so that the driving rocker 32 can swing downward at a larger angle and the trajectory of the valve needle 2 can be longer; and the plate mouth of the support plate 31 is located at the outer edge of the output end of the linear driver 33, which can have a limiting effect on the output end of the linear driver 33, ensuring that the output end of the linear driver 33 will not deviate, thereby improving the driving stability.

[0061] Preferably, the driving assembly 3 further comprises: a guide member 34;

[0062] The support plate 31 is provided with a guide groove 312; the guide member 34 is installed in the guide groove 312; the guide member 34 extends out of the guide groove 312 through a side shaft 341 and is rotatably connected to the driving rocker 32; the guide member 34 is connected to the valve needle 2; the guide member 34 is limitedly moved in the guide groove 312, driving the valve needle 2 to move along the extension direction of the guide groove 312.

[0063] The present solution optimally uses the guide member 34 to provide guidance for the valve needle 2. Specifically, the guide member 34 is rotatably connected to the driving rocker 32 through the side shaft 341, so that the angle can be adjusted when the driving rocker 32 is tilted up or downward; the guide member 34 can be limitedly moved in the guide groove 312, so that when the driving rocker 32 is tilted up or downward, the guide member 34 is driven to move along the extension direction of the guide groove 312, ensuring that the valve needle 2 can be adjusted in the extension direction of the guide groove 312, thereby improving the movement stability of the valve needle 2 and reducing the position deviation caused by the impact of the material on the valve needle 2.

[0064] Preferably, the mixing channel 13 includes in sequence: an inclined section 131, a vertical section 132 and a horizontal section 133;

[0065] The input port 11, the inclined section 131, the vertical section 132, the horizontal section 133 and the output channel 14 are connected in sequence;

[0066] The inclined section 131 is inclined; the vertical section 132 is vertically arranged; the horizontal section 133 is horizontally arranged and vertically connected to a side portion of the output channel 14; the driving opening 15 is arranged in a surrounding range between the inclined section 131, the vertical section 132 and the horizontal section 133.

[0067] The two ends of the mixing channel 13 are bent in multiple sections, so that the inclined section 131 is inclined, the vertical section 132 is vertically arranged, and the horizontal section 133 is horizontally arranged, so that the driving opening 15 is located within the bending range of the mixing channel 13. That is, the present solution can set the driving assembly 3 between the inclined section 131, the vertical section 132, and the horizontal section 133, without setting the driving assembly 3 at the input port 11, thereby avoiding setting the driving assembly 3 at the input port 11 to limit the driving of the valve needle 2.

[0068] A plastic injection molding system is provided with the above-mentioned nozzle structure.

[0069] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A nozzle structure, characterized in that: include: Nozzle body; An input port is provided at one end of the nozzle body, and an output port is provided at the other end of the nozzle body; a mixing channel and an output channel are sequentially provided between the input port and the output port; The mixing channel is single; the input end of the mixing channel is connected to the input port, the output end of the mixing channel is connected to the input end of the output channel; the output end of the output channel is connected to the output port; The output channel is located at the central axis of the nozzle body; the two ends of the mixing channel are bent in multiple sections and vertically connected to one side of the output channel at the output end.

2. A nozzle structure according to claim 1, characterized in that: Also includes: Valve needle; The valve needle is arranged in the output channel and extends along the length direction of the output channel.

3. A nozzle structure according to claim 2, characterized in that: The valve needle is movably mounted on the output channel and moves along the extension direction of the output channel; The outer side surface of the nozzle body is provided with a driving opening between the input end and the output end of the mixing channel, and the opening of the driving opening is exposed on the outer side surface of the nozzle body; the driving end of the valve needle extends out of the output channel and is exposed from the driving opening.

4. A nozzle structure according to claim 3, characterized in that: Also includes: Drive components; The drive assembly is arranged on the outside of the nozzle body; the nozzle body is provided with a valve movable port between the drive opening and the input end of the output channel; the valve needle can be movably limited at the valve movable port; the output end of the drive assembly is connected to the valve needle, for driving the valve needle to move to the drive opening.

5. A nozzle structure according to claim 4, characterized in that: The driving assembly comprises: a support plate, a driving seesaw and a linear drive; The support plate is arranged on the nozzle body, and the support plate is provided with a rotating seat; the driving seesaw is swingably installed on the rotating seat between the two ends; one end of the driving seesaw is connected to the end of the valve needle at the driving opening, and the output end of the linear driver is rotatably connected to the other end of the driving seesaw; the linear driver is used to drive one end of the driving seesaw to move linearly, drive the driving seesaw to swing with the rotating seat as a fulcrum, so that the driving seesaw swings and drives the valve needle to move linearly in the output channel.

6. A nozzle structure according to claim 5, characterized in that: The linear drive is a pneumatic cylinder or an oil cylinder.

7. A nozzle structure according to claim 5, characterized in that: One end of the support plate extends into the drive opening and is fixed to the inner wall of the drive opening; the lower surface of the other end of the support plate is connected to the linear drive; The output end of the linear actuator passes through the plate opening of the support plate upwards and is connected to the driving seesaw.

8. A nozzle structure according to claim 5, characterized in that: The driving assembly further comprises: a guide member; The support plate is provided with a guide groove; the guide member is installed in the guide groove; the guide member extends out of the guide groove through a side shaft and is rotatably connected to the driving rocker; the guide member is connected to the valve needle; the guide member is limited and moved in the guide groove, driving the valve needle to move along the extension direction of the guide groove.

9. A nozzle structure according to claim 3, characterized in that: The mixing channel comprises in sequence: an inclined section, a vertical section and a horizontal section; The input port, the inclined section, the vertical section, the horizontal section and the output channel are connected in sequence; The inclined section is arranged obliquely; the vertical section is arranged vertically; the horizontal section is arranged horizontally and vertically connected to a side portion of the output channel; and the driving opening is arranged in a surrounding range among the inclined section, the vertical section and the horizontal section.

10. A plastic injection molding system, characterized in that: A nozzle structure according to any one of claims 1 to 9 is provided.

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