Hot runner structure with laterally-arranged drive and injection mold feeding system

Abstract

The utility model discloses a hot runner structure with a laterally-arranged drive and an injection mold feeding system, and the hot runner structure comprises a runner main body, a discharging nozzle, a valve needle and a drive assembly; a material conveying channel is arranged in the runner main body; a driving opening is formed in the outer part of the runner main body in the distribution range of the material conveying channels; the material conveying channel is provided with a valve moving port at the linear position of the driving opening, and the material conveying channel is communicated with the discharging nozzle at the linear position of the valve moving port; the valve needle movably limits the valve moving opening, the valve needle extends to the material conveying channel and the discharging nozzle, and the driving end of the valve needle is exposed out of the driving opening; the driving assembly is installed on one side of the runner body, and the output end of the runner body is connected to the driving end of the valve needle and used for driving the valve needle to linearly move on the discharging nozzle. According to the scheme, the problem that feeding of a hot runner structure easily interferes with the valve needle, so that the position is unstable is solved.

Description

Technical Field

[0001] The utility model relates to the field of plastic processing, in particular to a hot runner structure with a side drive and an injection mold feeding system. Background Art

[0002] Hot runner is a heating component system used in injection molds to inject melted plastic particles into the mold cavity. Hot runner molds are a new structure that heats the runners and sprues of traditional molds or three-plate molds, so that the runners and sprues do not need to be removed during each molding.

[0003] The existing flow channel will be installed with a valve needle, which can move to block or detach from the nozzle of the flow channel to control the inflow and outflow of materials; in the existing flow channel, the valve needle is directly installed inside the flow channel, and when the material is input into the flow channel, the material will impact the valve needle, which will wear the surface of the valve needle on the one hand, and on the other hand, the position of the valve needle will deviate from the center axis of the nozzle, so that the valve needle and the nozzle are not set concentrically, affecting the normal use of the valve needle. At the same time, the valve needle is used to move the nozzle in the flow channel, and a driver needs to be installed on one end of the valve needle so that the driver drives the valve needle to move in a straight line; and the driver may be set at the input port of the flow channel. On the one hand, the setting of the driver will limit the position of the input port, and on the other hand, the vibration generated by the operation of the driver will also affect the stability of the input port feeding. In this way, the hot runner structure and the valve needle interfere with each other during use, resulting in instability. Utility Model Content

[0004] The utility model aims to provide a hot runner structure with a side-mounted drive, which can make the material transfer channel of the runner body and the valve needle independently separated from each other.

[0005] The utility model also provides an injection mold feeding system, which is provided with the above-mentioned hot runner structure with a driving side.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A hot runner structure with a side-mounted drive, comprising: a runner body, a discharge nozzle, a valve needle and a drive assembly;

[0008] A material transfer channel is provided inside the flow channel body; a driving opening is provided outside the flow channel body within the distribution range of the material transfer channel; the material transfer channel is provided with a valve movable port at a linear position of the driving opening, and the material transfer channel is connected to the discharge nozzle at a linear position of the valve movable port; the valve needle can movably limit the valve movable port, the valve needle extends to the material transfer channel and the discharge nozzle, and the driving end of the valve needle is exposed at the driving opening; the driving assembly is installed on one side of the flow channel body, and the output end of the flow channel body is connected to the driving end of the valve needle, which is used to drive the valve needle to move linearly to the discharge nozzle.

[0009] Optimally, the driving assembly includes: a support plate, a driving seesaw and a linear drive;

[0010] The support plate is arranged on the flow channel 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 to the discharge nozzle.

[0011] Optimally, the linear drive is a pneumatic cylinder or an oil cylinder.

[0012] Optimally, 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.

[0013] Optimally, the drive assembly further comprises: a guide member;

[0014] The support plate is provided with a guide groove; the guide member is connected to the valve needle; 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 limited and moved in the guide groove, driving the valve needle to move along the extension direction of the guide groove.

[0015] Optimally, the flow channel body includes: a plurality of split shells;

[0016] The split shell is provided with a material transfer channel; a plurality of the split shells are connected in sequence, and the material transfer channels of the plurality of the split shells are interconnected to form the material transfer channel.

[0017] Optimally, the material transfer channel is provided with a first transverse section extending transversely, a vertical section extending vertically, and a second transverse section extending transversely in sequence;

[0018] The drive opening is provided on the outside of the flow channel body within the enclosed range of the first transverse section, the vertical section and the second transverse section;

[0019] The input end of the flow channel body is arranged at the first transverse section; the second transverse section is provided with the valve movable port and is connected to the discharge nozzle.

[0020] Preferably, the flow channel body is provided with a temperature control tank.

[0021] Optimally, the temperature control groove bypasses the outer edge of the drive opening.

[0022] An injection mold feeding system is characterized by being provided with the above-mentioned hot runner structure with a side drive.

[0023] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0024] The present invention provides a hot runner structure with a side-mounted drive. By arranging the drive component on one side of the runner body, it is unnecessary to arrange one end of the valve needle on the top of the runner body. Instead, a drive opening is arranged between multiple sections of the material transfer channel, and the valve needle exposed in the drive opening is driven by the drive component. The material transfer channel of the runner body can be independently separated from the valve needle, thereby solving the problem that the feed of the hot runner structure easily interferes with the valve needle and causes unstable position. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of one embodiment of the hot runner structure;

[0026] Figure 2 It is a schematic cross-sectional structure diagram of one embodiment of a hot runner structure;

[0027] Figure 3 is a schematic cross-sectional structure diagram of one embodiment of a flow channel body;

[0028] Figure 4 It is a schematic diagram of the structure of one embodiment of the drive assembly.

[0029] in:

[0030] Flow channel body 1, discharge nozzle 2, valve needle 3, drive assembly 4;

[0031] Material transfer channel 10; drive opening 11; valve movable opening 12; split shell 13; temperature control tank 14;

[0032] Material transfer channel 100; first transverse section 101, vertical section 102, second transverse section 103;

[0033] Support plate 41, driving rocker plate 42, linear drive 43; guide member 44;

[0034] Rotating seat 411; guide groove 412; side groove 413; side shaft 441. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] like Figure 1-4 , a hot runner structure with a side-mounted drive, comprising: a runner body 1, a discharge nozzle 2, a valve needle 3 and a drive assembly 4;

[0038] A material transfer channel 10 is provided inside the flow channel body 1; a driving opening 11 is provided outside the flow channel body 1 within the distribution range of the material transfer channel 10; the material transfer channel 10 is provided with a valve movable port 12 at a linear position of the driving opening 11, and the material transfer channel 10 is connected to the discharge nozzle 2 at a linear position of the valve movable port 12; the valve needle 3 can movably limit the valve movable port 12, the valve needle 3 extends to the material transfer channel 10 and the discharge nozzle 2, and the driving end of the valve needle 3 is exposed at the driving opening 11; the driving assembly 4 is installed on one side of the flow channel body 1, and the output end of the flow channel body 1 is connected to the driving end of the valve needle 3, which is used to drive the valve needle 3 to move linearly to the discharge nozzle 2.

[0039] The present solution provides a hot runner structure with a side-mounted drive, which eliminates the need to set one end of the valve needle 3 on the top of the runner body 1 by setting the drive component 4 on one side of the runner body 1. Instead, a drive opening 11 is set between multiple sections of the material transfer channel 10, and the valve needle 3 exposed in the drive opening 11 is driven by the drive component 4. This allows the material transfer channel 10 of the runner body 1 to be independently separated from the valve needle 3, thereby solving the problem of the hot runner structure's material feed easily interfering with the valve needle 3 and causing positional instability.

[0040] Specifically, a material transfer channel 10 is provided inside the flow channel body 1 for conveying materials, such as liquids or viscous substances, and molten plastic is taken as an example below; plastic is input from the input end of the material transfer channel 10, and the material transfer channel 10 can be composed of a plurality of bent sections of pipelines connected in sequence; a drive opening 11 outside the flow channel body 1 is within the distribution range of the material transfer channel 10, that is, the plurality of bent sections of pipelines surround the drive opening 11; the drive opening 11 exposes one end of the valve needle 3, and the valve needle 3 passes through the material transfer channel 10 and the discharge nozzle 2 in sequence; according to common knowledge, the valve needle 3 can be used to loosen or block the outlet of the nozzle; corresponding to the actual situation of the present application, the valve needle 3 extends to the discharge nozzle 2, which can loosen the opening of the discharge nozzle 2 at one of the moving positions and block the opening of the discharge nozzle 2 at another moving position, thereby realizing the switching state of the nozzle; one end of the valve needle 3 is exposed at the drive opening 11, and the output end of the drive component 4 is directly in the flow The main body 1 is externally connected to a valve needle 3 of a driving opening 11, and an output end of a driving assembly 4 is movable and drives the valve needle 3 to move to a valve movable port 12. The valve needle 3 may be provided at the valve movable port 12 with a known movable seat for improving the smoothness of movement, a sealing plug for improving the sealing degree, a positioning member for providing a positioning effect, and the like; the valve needle 3 may be moved in the discharge nozzle 2, so as to realize the control of the switch state of the discharge nozzle 2; in this way, the plastic is input into the material transfer channel 10, and thus transferred to the discharge nozzle 2 at a straight position of the valve movable port 12; and since the plastic passes through a plurality of bent pipelines, its flow velocity is slowed down before contacting the valve needle 3, which can reduce the impact on the valve needle 3; at the same time, since the valve needle 3 can be provided at the output position of the material transfer channel 10, the actual position of the valve needle 3 in the material transfer channel 10 is small, and thus the contact area between the plastic and the valve needle 3 in the material transfer channel 10 is small, thereby reducing the impact on the valve needle 3 and causing the problem of position displacement. Furthermore, the drive assembly 4 can be located within the distribution range of the material transfer channel 10, so that the input end of the material transfer channel 10 and the drive source of the valve needle 3 are separated by air. The input of plastic at any position of the material transfer channel 10 will not restrict the installation or drive of the drive assembly 4, thereby avoiding interference with material input and the movement of the valve needle 3.

[0041] The driving assembly 4 is a well-known mechanism having the function of driving the valve needle 3 to move, such as a gas cylinder, an oil cylinder, etc.

[0042] Optimally, the driving assembly 4 includes: a support plate 41, a driving rocker plate 42 and a linear drive 43;

[0043] The support plate 41 is arranged on the flow channel body 1, and the support plate 41 is provided with a rotating seat 411; the driving seesaw 42 is swingably installed on the rotating seat 411 between the two ends; one end of the driving seesaw 42 is connected to the valve needle 3 at one end of the driving opening 11, and the output end of the linear driver 43 is rotatably connected to the other end of the driving seesaw 42; the linear driver 43 is used to drive one end of the driving seesaw 42 to move linearly, driving the driving seesaw 42 to swing with the rotating seat 411 as the fulcrum, so that the driving seesaw 42 swings and drives the valve needle 3 to move to the discharge nozzle 2.

[0044] In one of the most optimal embodiments, the present solution uses a "seesaw" structure to drive the valve needle 3 to move; specifically, the linear actuator 43 drives one end of the driving seesaw 42 to move linearly, thereby driving the two ends of the driving seesaw 42 to rotate relative to each other on the rotating seat 411, and then driving the other end of the driving seesaw 42 to tilt upward or lower; the driving seesaw 42 can drive the valve needle 3 to separate from the opening of the discharge nozzle 2 when the end away from the linear actuator 43 is tilted, and can drive the valve needle 3 to block the opening of the discharge nozzle 2 when the end away from the linear actuator 43 is lowered. In this way, the present solution only needs to set a "seesaw" structure on one side of the flow channel body 1 to achieve control of the valve needle 3, and can avoid the problem of interference with the flow channel body 1 and limited feeding caused by directly connecting one end of the valve needle 3 to the linear actuator 43.

[0045] Optimally, the linear drive 43 is a pneumatic cylinder or an oil cylinder.

[0046] In this solution, a pneumatic cylinder or an oil cylinder can be used as the linear actuator 43; the pneumatic cylinder has two output states, which can drive the valve needle 3 to move downward to block the opening of the discharge nozzle 2 in the extended state, and can drive the valve needle 3 to move upward to be separated from the opening of the discharge nozzle 2 in the retracted state. The oil cylinder can be used to drive the valve needle 3 to reciprocate, with a small transmission gap and a stable movement.

[0047] Optimally, one end of the support plate 41 extends into the drive opening 11 and is fixed to the inner wall of the drive opening 11; the lower surface of the other end of the support plate 41 is connected to the linear drive 43; the output end of the linear drive 43 passes upward through the plate opening of the support plate 41 and is connected to the drive rocker 42.

[0048] The support plate 41 is connected to the inner wall of the driving opening 11 through the lower surface, and the upper surface of the support plate 41 is left empty, so that the driving rocker 42 can swing downward at a larger angle and the trajectory of the valve needle 3 can be longer; and the plate mouth of the support plate 41 is located at the outer edge of the output end of the linear driver 43, which can have a limiting effect on the output end of the linear driver 43, ensuring that the output end of the linear driver 43 will not deviate, thereby improving the driving stability.

[0049] Optimally, the driving assembly 4 further includes: a guide member 44;

[0050] The support plate 41 is provided with a guide groove 412; the guide member 44 is connected to the valve needle 3; the guide member 44 is installed in the guide groove 412; the guide member 44 extends out of the guide groove 412 through a side shaft 441 and is rotatably connected to the driving rocker 42; the guide member 44 is limitedly moved in the guide groove 412, driving the valve needle 3 to move along the extension direction of the guide groove 412.

[0051] The present solution optimally uses the guide member 44 to provide guidance for the valve needle 3. Specifically, the guide member 44 is rotatably connected to the driving rocker 42 through the side shaft 441, so that the angle can be adjusted when the driving rocker 42 is tilted up or downward; the guide member 44 can be limitedly moved in the guide groove 412, so that when the driving rocker 42 is tilted up or downward, the guide member 44 is driven to move along the extension direction of the guide groove 412, ensuring that the valve needle 3 can be positionally adjusted along the extension direction of the guide groove 412, thereby improving the movement stability of the valve needle 3 and reducing the position deviation caused by the impact of the material on the valve needle 3.

[0052] Optimally, the guide groove 412 is provided with a side groove 413 ; the side shaft 441 passes through the side groove 413 and is rotatably connected to the driving rocker plate 42 ; the side shaft 441 is limitedly moved in the side groove 413 .

[0053] The guide groove 412 can limit the side shaft 441 of the guide member 44. When the side shaft 441 moves to the end of the side groove 413, the side groove 413 limits the movement of the side shaft 441, so that the side shaft 441 cannot move, so as to limit the starting position and the end position of the guide member 44. For example, when the side shaft 441 is at one end of the side groove 413, the valve needle 3 just blocks the opening of the discharge nozzle 2, and when the side shaft 441 is at the other end of the side groove 413, the valve needle 3 just detaches from the opening of the discharge nozzle 2.

[0054] Optimally, the flow channel body 1 includes: a plurality of split shells 13;

[0055] The split shell 13 is provided with a material transfer passage 100 ; a plurality of the split shells 13 are connected in sequence, and the material transfer passages 100 of the plurality of split shells 13 are interconnected to form the material transfer channel 10 .

[0056] The flow channel body 1 can be an integrated structure or a split structure; in one embodiment, Figure 2The flow channel body 1 is divided into two split shells 13. After the two split shells 13 are close to each other and connected, the material transfer paths 100 of the two are connected to form a material transfer channel 10. In this way, the advantage of using a split connection is that one of the split shells 13 can be easily replaced, which is also convenient for the production of the flow channel body 1 and more convenient for maintenance.

[0057] Optimally, the material transfer channel 10 is provided with a first transverse section 101 extending transversely, a vertical section 102 extending vertically, and a second transverse section 103 extending transversely in sequence;

[0058] The drive opening 11 is provided on the outside of the flow channel body 1 within the enclosed range of the first transverse section 101 , the vertical section 102 and the second transverse section 103 ;

[0059] The input end of the flow channel body 1 is arranged at the first transverse section 101 ; the second transverse section 103 is provided with the valve movable port 12 and is connected to the discharge nozzle 2 .

[0060] The present solution preferably divides the material transfer channel 10 into multiple sections consisting of transversely extending and vertically extending pipelines, such as a first transverse section 101 extending transversely, a vertical section 102 extending vertically, and a second transverse section 103 extending transversely; the first transverse section 101, the vertical section 102, and the second transverse section 103 can surround the drive opening 11, the drive assembly 4 is arranged at the drive opening 11, and the flow channel body 1 mainly inputs plastic in the first transverse section 101; therefore, the feed of the flow channel body 1 and the valve needle 3 form a relatively isolated distribution, and the two do not interfere with each other, thereby improving the feed smoothness and the position stability of the valve needle 3.

[0061] Optimally, the flow channel body 1 is provided with a temperature control tank 14 .

[0062] A temperature control tank 14 may be provided inside or outside the flow channel body 1 , and a fluid with a specific temperature may be provided in the temperature control tank 14 , or a temperature control pipe may be provided in the temperature control tank 14 , thereby providing a temperature control function for the flow channel body 1 .

[0063] Optimally, the temperature control groove 14 bypasses the outer edge of the driving opening 11 .

[0064] The temperature control groove 14 can bypass the outer edge of the driving opening 11, so that the temperature control groove 14 is longer, which can avoid the position of the driving opening 11 and make the temperature control more sufficient by extending the length of the temperature control groove 14.

[0065] An injection mold feeding system is provided with the above-mentioned hot runner structure with a side drive.

[0066] 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 hot runner structure with a side-mounted driver, characterized in that: include: Flow channel body, discharge nozzle, valve needle and drive assembly; A material transfer channel is provided inside the flow channel body; a driving opening is provided outside the flow channel body within the distribution range of the material transfer channel; the material transfer channel is provided with a valve movable port at a linear position of the driving opening, and the material transfer channel is connected to the discharge nozzle at a linear position of the valve movable port; the valve needle can movably limit the valve movable port, the valve needle extends to the material transfer channel and the discharge nozzle, and the driving end of the valve needle is exposed at the driving opening; the driving assembly is installed on one side of the flow channel body, and the output end of the flow channel body is connected to the driving end of the valve needle, which is used to drive the valve needle to move linearly to the discharge nozzle.

2. A hot runner structure with a side-mounted driver according to claim 1, characterized in that: The driving assembly comprises: a support plate, a driving seesaw and a linear drive; The support plate is arranged on the flow channel 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 to the discharge nozzle.

3. A hot runner structure with a side-mounted driver according to claim 2, characterized in that: The linear drive is a pneumatic cylinder or an oil cylinder.

4. The hot runner structure with a side-mounted driver according to claim 2, 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.

5. The hot runner structure with a side-mounted driver according to claim 4, characterized in that: The driving assembly further comprises: a guide member; The support plate is provided with a guide groove; the guide member is connected to the valve needle; 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 limited and moved in the guide groove, driving the valve needle to move along the extension direction of the guide groove.

6. The hot runner structure with a side-mounted driver according to claim 1, characterized in that: The flow channel body comprises: a plurality of split shells; The split shell is provided with a material transfer channel; a plurality of the split shells are connected in sequence, and the material transfer channels of the plurality of the split shells are interconnected to form the material transfer channel.

7. A hot runner structure with a side-mounted driver according to claim 1 or 6, characterized in that: The material transfer channel is sequentially provided with a first transverse section extending transversely, a vertical section extending vertically, and a second transverse section extending transversely; The drive opening is provided on the outside of the flow channel body within the enclosed range of the first transverse section, the vertical section and the second transverse section; The input end of the flow channel body is arranged at the first transverse section; the second transverse section is provided with the valve movable port and is connected to the discharge nozzle.

8. A hot runner structure with a side-driven drive according to claim 1 or 6, characterized in that: The flow channel body is provided with a temperature control tank.

9. The hot runner structure with a side-driven drive according to claim 8, characterized in that: The temperature control groove bypasses the outer edge of the driving opening.

10. An injection mold feeding system, characterized in that: A hot runner structure with a side drive as described in any one of claims 1 to 9 is provided.

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