A dual-drive, rotary adjustable injection nozzle assembly for an injection molding machine

Abstract

This invention relates to the field of injection molding equipment technology, specifically to a dual-drive, rotary adjustable injection nozzle assembly for an injection molding machine. It includes a fixed adjustment module and a movable adjustment module coaxially slidably disposed at the front end of the fixed adjustment module. A first threaded connection is also coaxially fixed at the other end of the fixed adjustment module away from the movable adjustment module. A spring is also coaxially fixed between the fixed and movable adjustment modules. An elastic adjustment element is laterally fixed to the outer wall of the fixed adjustment module. The adjustment end of the elastic adjustment element passes through a limiting element coaxially rotatably disposed on the movable adjustment module and is snapped into the limiting element by a locking wedge. Multiple sets of locking wedges are equidistantly disposed along the axis of the fixed adjustment module. This invention not only allows for free adjustment of the discharge pressure of molten plastic but also allows for simultaneous adjustment of the discharge flow rate. The adjustment is simple and convenient, and it is applicable to different injection molds.

Description

Technical Field

[0001] This invention relates to the field of injection molding equipment technology, specifically to a dual-drive, adjustable rotary injection nozzle assembly for an injection molding machine. Background Technology

[0002] An injection molding machine is a primary molding device that uses plastic molds to shape thermoplastic or thermosetting plastics into various shapes of plastic products. During operation, the solid raw material is melted and then injected into the mold through a feeding pipe and nozzle. During injection molding, fluid plastic enters the feeding channel from the screw outlet and is then injected into the mold cavity through the nozzle of the injection molding machine. However, existing injection molding machines typically have only one injection head, which is usually configured to correspond to the current injection mold. When a different product needs to be produced after the first type of injection molded product is completed, the different sizes and shapes of the runners in the molds prevent the machine from meeting the required intake pressure and volume. This not only results in the raw material failing to quickly fill the mold cavity and form the desired shape, but also causes uneven plastic filling, affecting the quality and appearance of the product. Furthermore, it can lead to unstable molding quality and damage to the plastic products. If the injection pressure is too high, it may cause the mold to crack or deform, while too low an injection pressure may cause the mold to malfunction or produce incomplete products. Moreover, because the injection pressure cannot meet the injection pressure required by the runner, the plastic cannot fill the mold cavity completely in time, leading to increased downtime during production and significantly reducing mold production efficiency.

[0003] In the existing technology, although there are some structures that can easily adjust the nozzle flow rate, they are all achieved through valve structures, which are complex, and if the movable adjustment module is damaged, the entire nozzle needs to be replaced. Summary of the Invention

[0004] To address the aforementioned issues, a dual-drive, adjustable rotary injection nozzle assembly for injection molding machines is provided. This assembly not only allows for adjustment of the discharge pressure of molten plastic but also the discharge flow rate, thereby solving the technical problems in the prior art where the nozzle needs to be replaced for the corresponding injection mold and the nozzle cannot be freely adjusted or flexibly replaced.

[0005] To address the problems of existing technologies, this invention provides a dual-drive rotary adjustable injection nozzle assembly for an injection molding machine, comprising a fixed adjustment module and a movable adjustment module coaxially slidably disposed at the front end of the fixed adjustment module. The other end of the fixed adjustment module, away from the movable adjustment module, is also coaxially fixedly provided with a first threaded connection portion, through which the fixed adjustment module is screwed to an external injection molding device. A spring is also coaxially fixedly disposed between the fixed adjustment module and the movable adjustment module. An elastic adjustment element is laterally fixedly disposed on the outer wall of the fixed adjustment module and horizontally oriented towards the movable adjustment module. The adjustment end of the elastic adjustment element passes through a limiting element coaxially rotatably disposed on the movable adjustment module and is snapped into the limiting element by a locking wedge. Multiple sets of locking wedges are equidistantly disposed along the axis of the fixed adjustment module, each set corresponding to an adjustment level, used to achieve different pressure and flow rate adjustments by cooperating with the outlet element and the outlet nozzle.

[0006] Preferably, the fixed adjustment module includes a fixed adjustment seat and a first threaded connection part coaxially fixedly disposed at the rear end of the fixed adjustment seat; a collar is coaxially fixedly disposed at the front end of the fixed adjustment seat relative to the first threaded connection part, and a through hole is opened in the middle of both the first threaded connection part and the fixed adjustment seat; a liquid guide rod is also coaxially disposed inside the collar and fixedly connected to the fixed adjustment seat, and the liquid guide rod is connected to the through hole opened inside the fixed adjustment seat. The liquid guide rod extends axially toward the movable adjustment module and extends into the movable adjustment module. The liquid guide rod is a hollow cylindrical guide rod and a cone head is coaxially fixedly disposed at its distal end; an outlet for discharging molten plastic is also opened through the side wall of the liquid guide rod. The outer diameter of the liquid guide rod is smaller than the inner diameter of the collar. A discharge element is coaxially fixedly disposed at the end of the cone head and is used to conduct molten plastic toward the discharge nozzle.

[0007] Preferably, the outlet element includes an extension rod and an outlet head. The extension rod is coaxially fixed at the end of the cone head; the outlet head is coaxially fixed at the end of the extension rod. The outlet head is cylindrical and has an annular groove coaxially formed in the middle of its outer wall. The inner wall of the outlet head also has an annular channel extending through it, and multiple sets of annular channels are formed circumferentially along the axis of the extension rod. The entrance of the annular channel is formed on the surface of the outlet head near the extension rod, and the exit is formed on the side wall of the annular groove.

[0008] Preferably, the movable adjustment module includes a transmission conduit, an adjustment section, and a guide conduit coaxially fixed at the rear end of the adjustment section. The guide conduit is positioned between the collar and the guide rod and slides through the gap of the collar. Both the adjustment section and the guide conduit have interconnected through holes. The transmission conduit is coaxially fixed at the front end of the adjustment section, and a transmission channel is also coaxially formed within it. The transmission channel consists of a first channel and a second channel connected sequentially. The first channel is a cylindrical tubular channel with an inner diameter larger than the outer diameter of the guide rod. The second channel is a conical channel with the same shape and outer diameter as the cone. An annular gap is formed between the transmission conduit and the guide rod, and this annular gap serves as the guide channel. The axial length of the second channel is longer than the axial length of the cone. A second threaded connection is also coaxially fixed at the front end of the transmission conduit. The sidewall of the adjustment section also has a vertically arranged protrusion, and the sidewall of the protrusion has a rectangular through hole through which the adjustment end of the elastic adjustment element passes.

[0009] Preferably, the elastic adjustment element includes a protrusion, an extension strip, and a locking wedge. The protrusion is vertically fixed to the side wall of the fixed adjustment module. The extension strip is vertically fixed to the side of the protrusion near the outlet nozzle, and a locking wedge is also fixedly installed on the lower surface of the front end of the extension strip. Multiple sets of locking wedges are equidistantly arranged along the long side of the extension strip.

[0010] Preferably, the end of the extension bar is also provided with a stop bar vertically, and the front end of the stop bar is radially arranged toward the side wall of the movable adjustment module. The length of the stop bar is longer than the engaging wedge and is close to the side wall of the movable adjustment module.

[0011] Preferably, the limiting element includes a rotating disk, a baffle, an inclined surface, and a friction part. The rotating disk is coaxially rotatably disposed in the middle of the movable adjustment part. The outer wall of the rotating disk is also radially provided with a baffle to limit the adjustment end of the elastic adjustment element. The baffle is also provided with an inclined surface on the side end near the fixed adjustment module. The friction part is fixedly disposed on the outer wall of the rotating disk and disposed near the baffle.

[0012] Preferably, the outlet nozzle is a tapered guide head; a fourth channel is coaxially formed inside it for the outlet element to slide within it; and a first annular outlet channel, a second annular outlet channel, and a third annular outlet channel are equidistantly arranged along the rear end of the outlet nozzle to the tapered head; the conduction space of the first annular outlet channel, the second annular outlet channel, and the third annular outlet channel is arranged from large to small, and adjacent first annular outlet channels, second annular outlet channels, and third annular outlet channels are all connected by ribs, and multiple sets of ribs are arranged circumferentially along the axis of the outlet nozzle.

[0013] Preferably, the first annular outlet channel is tapered and circumferentially opened inside the outlet nozzle axis; the shape of the first annular outlet channel is the same as the shape of the outlet nozzle.

[0014] Preferably, the outer wall of the outlet nozzle also has a notch.

[0015] The advantages of this invention compared to the prior art are as follows: This invention achieves flexible adjustment of the transmission pressure during the transmission process through a movable adjustment module coaxially slidably set at the front end of the fixed adjustment module. At the same time, the outlet nozzle screwed to the output end of the movable adjustment module achieves flexible adjustment of the transmission pressure and the corresponding adjustment of the outlet flow rate, making it suitable for current injection molds. It eliminates the need to frequently replace nozzles with corresponding flow rates. Moreover, when the movable adjustment module is damaged, only the outlet nozzle needs to be replaced, reducing maintenance costs and improving production efficiency. Attached Figure Description

[0016] Figure 1 A three-dimensional dual-drive rotary adjustable injection nozzle assembly for an injection molding machine. Figure 1 ;

[0017] Figure 2 A three-dimensional dual-drive rotary adjustable injection nozzle assembly for an injection molding machine. Figure 2 ;

[0018] Figure 3 This is a side view of a dual-drive, rotary adjustable injection nozzle assembly for an injection molding machine.

[0019] Figure 4 yes Figure 3 Sectional view of section AA;

[0020] Figure 5 yes Figure 4 A magnified view of section B;

[0021] Figure 6 yes Figure 4 A magnified view of a portion at point C;

[0022] Figure 7 This is an exploded three-dimensional schematic diagram of a dual-drive, adjustable rotary injection nozzle assembly for an injection molding machine.

[0023] Figure 8 This is a three-dimensional view of a fixed adjustment module in a dual-drive, rotary adjustable injection nozzle assembly of an injection molding machine.

[0024] Figure 9 This is an exploded three-dimensional structural diagram of the movable adjustment module and the outlet nozzle in a dual-drive rotary adjustable injection nozzle assembly of an injection molding machine.

[0025] Figure 10 This is a three-dimensional view of the nozzle outlet in a dual-drive, rotary adjustable injection nozzle assembly of an injection molding machine.

[0026] The diagram is labeled as follows: 1-Fixed adjustment module; 11-First threaded connection; 12-Fixed adjustment seat; 13-Collar; 14-Guide rod; 141-Outlet; 15-Conical head; 16-Outlet element; 161-Extension rod; 162-Outlet head; 163-Annular channel; 164-Annular groove; 2-Modible adjustment module; 21-Adjustment part; 211-Protrusion; 212-Rectangular through hole; 22-Guide tube; 23-Transmission tube; 24-Transmission channel; 241 - First channel; 242- Second channel; 25- Second threaded connection; 3- Spring; 4- Elastic adjustment element; 41- Protrusion; 42- Extension strip; 43- Engaging wedge; 44- Stop bar; 5- Fixing element; 51- Rotating disk; 53- Baffle; 54- Inclined surface; 55- Friction part; 6- Outlet nozzle; 61- Fourth channel; 62- First annular outlet channel; 63- Second annular outlet channel; 64- Third annular outlet channel; 65- Rib; 66- Notch. Detailed Implementation

[0027] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0028] See Figures 1 to 10 As shown: A dual-drive rotary adjustable injection nozzle assembly for an injection molding machine includes a fixed adjustment module 1 and a movable adjustment module 2 coaxially slidably disposed at the front end of the fixed adjustment module 1. The other end of the fixed adjustment module 1 away from the movable adjustment module 2 is also coaxially fixedly disposed with a first threaded connection part 11. The fixed adjustment module 1 is screwed to an external injection molding device through the first threaded connection part 11. A spring 3 is also coaxially fixedly disposed between the fixed adjustment module 1 and the movable adjustment module 2. An elastic adjustment element 4 is horizontally fixedly disposed on the outer wall of the fixed adjustment module 1 and is horizontally disposed towards the movable adjustment module 2. The adjustment end of the elastic adjustment element 4 passes through a limiting element 5 coaxially rotatably disposed on the movable adjustment module 2 and is snapped to the limiting element 5 through a snap-fit ​​wedge 43. Multiple sets of snap-fit ​​wedges 43 are equidistantly disposed along the axis of the fixed adjustment module 1. Each set of snap-fit ​​wedges 43 corresponds to an adjustment level, which is used to achieve different pressure and flow rate adjustments by cooperating with the outlet element 16 and the outlet nozzle 6.

[0029] In operation, the fixed adjustment module 1 is fixedly screwed to the external injection molding equipment via the first threaded connection 11. When injection into the mold is required, the external injection molding equipment is first driven to input molten plastic into the fixed adjustment module 1. The molten plastic is conducted along the fixed adjustment module 1 to the movable adjustment module 2 and finally discharged into the injection mold via the discharge nozzle 6. When the injection pressure and flow rate of the molten plastic need to be adjusted, the movable adjustment module 2 is driven to slide coaxially toward the fixed adjustment module 1 by an external drive source. Since multiple sets of locking wedges 43 are equidistantly arranged along the axis of the fixed adjustment module 1, each time the locking wedges 43 are driven to engage with the limiting element 5, the flow rate and pressure of the molten plastic discharged from the nozzle are adjusted accordingly. Thus, the self-adjustment of the nozzle output flow rate and pressure can be achieved without replacing the corresponding nozzle. Compared with existing adjustable nozzles, this invention adopts a purely mechanical structure, which is simple to adjust, has good effect, and has a long service life. It does not have the technical problem of requiring external equipment intervention like existing adjustable nozzles.

[0030] See Figure 3 and Figure 8 As shown: The fixed adjustment module 1 includes a fixed adjustment seat 12 and a first threaded connection part 11 coaxially fixedly disposed at the rear end of the fixed adjustment seat 12; a collar 13 is coaxially fixedly disposed at the front end of the fixed adjustment seat 12 relative to the first threaded connection part 11, and the first threaded connection part 11 and the fixed adjustment seat 12 are both provided with interconnected through holes in the middle; a liquid guide rod 14 is also coaxially disposed inside the collar 13 and is fixedly connected to the fixed adjustment seat 12, and the liquid guide rod 14 is connected to the through hole inside the fixed adjustment seat 12. The liquid guide rod 14 extends axially toward the movable adjustment module 2 and extends into the movable adjustment module 2. The liquid guide rod 14 is a hollow cylindrical guide rod and a cone head 15 is coaxially fixedly disposed at the distal end; an outlet 141 for discharging molten plastic is also provided through the side wall of the liquid guide rod 14. The outer diameter of the liquid guide rod 14 is smaller than the inner diameter of the collar 13. A discharge element 16 is coaxially fixedly disposed at the end of the cone head 15 and is used to conduct molten plastic toward the discharge nozzle 6.

[0031] In the working state, the first threaded connection 11, the fixed adjustment seat 12 and the liquid guide rod 14 are integrally connected. When it is necessary to conduct molten plastic, the molten plastic is first conducted to the first threaded connection 11 through the external injection molding equipment, then conducted to the liquid guide rod 14 through the fixed adjustment seat 12, and finally conducted to the movable adjustment module 2 through the liquid outlet 141 opened on the outer wall of the liquid guide rod 14. The movable adjustment module 2 guides the molten plastic into the outlet nozzle 6 and out through the outlet nozzle 6, thereby realizing the output conduction of molten plastic.

[0032] See Figure 6As shown: The outlet element 16 includes an extension rod 161 and an outlet head 162. The extension rod 161 is coaxially fixed at the end of the cone head 15. The outlet head 162 is coaxially fixed at the end of the extension rod 161. The outlet head 162 is cylindrical and has an annular groove 164 coaxially formed in the middle of its outer wall. The inner wall of the outlet head 162 is also provided with an annular channel 163, and multiple sets of annular channels 163 are formed circumferentially along the axis of the extension rod 161. The entrance of the annular channel 163 is opened on the end surface of the outlet head 162 near the extension rod 161, and the outlet is opened on the side wall of the annular groove 164.

[0033] In operation, when the molten plastic is discharged from the outlet 141 into the annular gap, it is conducted towards the discharge head 162 and along the annular channel 163 into the annular groove 164. Finally, it is conducted towards the discharge nozzle 6 through the annular groove 164 and discharged through the discharge nozzle 6, thereby achieving precise discharge of the molten plastic. By sliding the discharge head 162 to change its position, the discharge flow rate can be adjusted.

[0034] See Figure 4 , Figure 7 and Figure 9 As shown: The active adjustment module 2 includes a transmission conduit 23, an adjustment part 21, and a guide conduit 22 coaxially fixed at the rear end of the adjustment part 21. The guide conduit 22 is positioned between the collar 13 and the guide rod 14 and is slidably fitted with the collar 13. Both the adjustment part 21 and the guide conduit 22 have interconnected through holes. The transmission conduit 23 is coaxially fixed at the front end of the adjustment part 21. A transmission channel 24 is also coaxially formed within the transmission conduit 23. The transmission channel 24 consists of a first channel 241 and a second channel 242 connected sequentially. The first channel 241 is circular. A cylindrical tubular channel with an inner diameter larger than the outer diameter of the liquid guide rod 14 is provided; the second channel 242 is a conical channel with the same shape and outer diameter as the cone head 15, and an annular gap is formed between the transmission conduit 23 and the liquid guide rod 14, the annular gap being the liquid guide channel; the axial length of the second channel 242 is longer than the axial length of the cone head 15; the front end of the transmission conduit 23 is also coaxially fixedly provided with a second threaded connection part 25; the side wall of the adjustment part 21 is also vertically provided with a protrusion 211, and the side wall of the protrusion 211 is provided with a rectangular through hole 212 through which the adjustment end of the elastic adjustment element 4 passes.

[0035] The initial position of the guide rod 14, as shown Figure 4As shown, the current nozzle flow rate and pressure are at their maximum. In the working state, when it is necessary to export the molten plastic, the molten plastic enters the annular gap formed between the transmission conduit 23 and the guide rod 14 through the outlet 141, that is, the first channel 241, and continues to be transmitted towards the second channel 242. Finally, it is conducted to the export element 16 and enters the annular channel 163, and finally enters the export nozzle 6 and is exported through the export nozzle 6. The rectangular through hole 212 is used for the adjustment end of the elastic adjustment element 4 to pass through and is engaged with the adjustment end of the elastic adjustment element 4.

[0036] See Figure 5 and Figure 8 As shown: The elastic adjustment element 4 includes a protrusion 41, an extension strip 42 and a fastening wedge 43. The protrusion 41 is vertically fixed to the side wall of the fixed adjustment module 1. The extension strip 42 is vertically set on the side of the protrusion 41 near the outlet 6, and the lower surface of the front end of the extension strip 42 is also fixedly provided with a fastening wedge 43. Multiple sets of fastening wedges 43 are equidistantly arranged along the long side of the extension strip 42.

[0037] In operation, with the cooperation of spring 3 and locking wedge 43, the fixed adjustment module 1 and the movable adjustment module 2 are continuously locked together while exerting opposing forces, so that the adjusted movable adjustment module 2 is stably stopped at the current adjustment point. Since multiple sets of locking wedge 43 are equidistantly arranged along the long side of extension strip 42, each axial backward movement of movable adjustment module 2 completes one adjustment. When it is necessary to adjust movable adjustment module 2 to the initial point, it is only necessary to rotate the limiting element 5 so that the limiting end of the limiting element 5 is axially moved away from the locking wedge 43. At this time, movable adjustment module 2 will slide back to the initial point under the elastic force of spring 3. The rotation of the limiting element 5 can also be controlled by the automatic rotation module, not limited to manual rotation.

[0038] See Figure 5 As shown: The end of the extension bar 42 is also vertically provided with a stop bar 44 and the front end of the stop bar 44 is radially arranged toward the side wall of the movable adjustment module 2. The length of the stop bar 44 is longer than the engaging wedge block 43 and is close to the side wall of the movable adjustment module 2.

[0039] In the working state, the stop bar 44 vertically arranged at the end of the extension bar 42 can prevent the movable adjustment module 2 from separating from the fixed adjustment module 1 under the elastic force of the spring 3 when the movable adjustment module 2 is reset and adjusted, thus ensuring the stability between the two without the need for the support and fixing element 5.

[0040] See Figure 9As shown: The limiting element 5 includes a rotating disk 51, a baffle 53, an inclined surface 54, and a friction part 55. The rotating disk 51 is coaxially rotatably disposed in the middle of the movable adjustment part 21. The outer wall of the rotating disk 51 is also radially provided with a baffle 53 to limit the adjustment end of the elastic adjustment element 4. The baffle 53 is also provided with an inclined surface 54 on the side end near the fixed adjustment module 1. The friction part 55 is fixedly disposed on the outer wall of the rotating disk 51 and is disposed near the baffle 53.

[0041] In operation, when it is necessary to adjust the rotation of the rotating disk 51, the operator only needs to hold the rotating disk 51 and rotate it circumferentially, either clockwise or counterclockwise. The baffle 53, which is radially fixed on the outer wall of the rotating disk 51, is then screwed off from the locking wedge 43. At this time, the movable adjustment module 2 will be axially moved away from the fixed adjustment module 1 under the elastic force of the spring 3, thereby realizing the axis reset adjustment of the movable adjustment module 2.

[0042] See Figure 6 and Figure 10 As shown: the outlet nozzle 6 is a tapered guide head; a fourth channel 61 is coaxially formed inside it for the outlet element 16 to slide inside; and a first annular outlet channel 62, a second annular outlet channel 63, and a third annular outlet channel 64 are equidistantly formed along the rear end of the outlet nozzle 6 to the cone head 15; the conduction space of the first annular outlet channel 62, the second annular outlet channel 63 to the third annular outlet channel 64 is set from large to small, and adjacent first annular outlet channels 62, second annular outlet channels 63 and third annular outlet channels 64 are connected by ribs 65, and multiple sets of ribs 65 are arranged circumferentially along the axis of the outlet nozzle 6.

[0043] In the working state, the output element 16 is initially located at the inlet of the first annular output channel 62. Since multiple sets of snap-fit ​​wedges 43 are equidistantly arranged along the long side of the extension strip 42, each set of snap-fit ​​wedges 43 corresponds to the first annular output channel 62, the second annular output channel 63, and the third annular output channel 64. Whenever the axis of the movable adjustment module 2 is adjusted one notch toward the fixed adjustment module 1, the corresponding first annular output channel 62, the second annular output channel 63, and the third annular output channel 64 in the output nozzle 6 move backward one notch axially, thereby achieving synchronous adjustment of different pressures and output flow rates. The second annular output channel 63 and the third annular output channel 64 are roughly the same shape as the first annular output channel 62, but differ in the shape and size of the output channel and the conduction cavity.

[0044] See Figure 6As shown: the first annular outlet channel 62 is tapered and circumferentially opened inside the outlet nozzle 6 along its axis; the shape of the first annular outlet channel 62 is the same as the shape of the outlet nozzle 6.

[0045] In operation, the output channels are not limited to three sets or can be multiple sets, thereby achieving more precise output pressure and flow control.

[0046] See Figure 7 As shown: The outer wall of the outlet nozzle 6 is also provided with a notch 66.

[0047] The notch is designed to allow workers to screw the outlet nozzle 6 onto the outlet end of the movable adjustment module 2 using tools. When the movable adjustment module 2 is damaged, only the outlet nozzle 6 needs to be replaced, which reduces maintenance costs and improves production efficiency.

[0048] This invention not only allows for free adjustment of the discharge pressure of molten plastic, but also allows for simultaneous adjustment of the discharge flow rate. The adjustment is simple and convenient, and it is applicable to different injection molds.

[0049] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A dual-drive, rotary adjustable injection nozzle assembly for an injection molding machine, characterized in that, The system includes a fixed adjustment module and a movable adjustment module coaxially slidably disposed at the front end of the fixed adjustment module. The other end of the fixed adjustment module, away from the movable adjustment module, is also coaxially fixedly provided with a first threaded connection portion, through which the fixed adjustment module is screwed to an external injection molding device. A spring is also coaxially fixed between the fixed adjustment module and the movable adjustment module. An elastic adjustment element is laterally fixedly disposed on the outer wall of the fixed adjustment module and horizontally oriented towards the movable adjustment module. The adjustment end of the elastic adjustment element passes through a limiting element coaxially rotatably disposed on the movable adjustment module and is connected to the limiting element via a snap-fit ​​wedge. The components are connected by snap-fit. Multiple sets of snap-fit ​​wedges are equidistantly arranged along the axis of the fixed adjustment module. Each set of snap-fit ​​wedges corresponds to an adjustment level, used to achieve different pressure and flow rate adjustments by cooperating with the outlet element and outlet nozzle. The fixed adjustment module includes a fixed adjustment seat and a first threaded connection part coaxially fixed to the rear end of the fixed adjustment seat. A collar is coaxially fixed to the front end of the fixed adjustment seat relative to the first threaded connection part. A guide rod, a hollow cylindrical guide rod with a conical head coaxially fixed to its distal end, is also coaxially arranged inside the collar and fixedly connected to the fixed adjustment seat. The movable adjustment module includes a transmission conduit, an adjustment part, and... A guide tube is coaxially fixed at the rear end of the adjusting part, and the guide tube is positioned between the collar and the liquid guide rod and slides with the collar gap; both the adjusting part and the guide tube have interconnected through holes; a transmission tube is coaxially fixed at the front end of the adjusting part, and a transmission channel is also coaxially formed inside the transmission tube. The transmission channel consists of a first channel and a second channel connected in sequence. The first channel is a cylindrical tubular channel with an inner diameter larger than the outer diameter of the liquid guide rod; the second channel is a conical channel with the same shape and outer diameter as the cone. An annular gap is formed between the transmission tube and the liquid guide rod, and the annular gap is the liquid guide channel; The axial length of the two channels is longer than the axial length of the cone; the front end of the transmission conduit is also coaxially fixedly provided with a second threaded connection; the side wall of the adjustment part is also vertically provided with a protrusion and the side wall of the protrusion is provided with a rectangular through hole for the adjustment end of the elastic adjustment element to pass through; the limiting element includes a rotating disk, a baffle, an inclined surface and a friction part, the rotating disk is coaxially rotatably provided in the middle of the movable adjustment part, the outer wall of the rotating disk is also radially provided with a baffle to limit the adjustment end of the elastic adjustment element; the baffle is also provided with an inclined surface on the side end near the fixed adjustment module; the friction part is fixedly provided on the outer wall of the rotating disk and near the baffle.

2. The dual-drive adjustable injection nozzle assembly for an injection molding machine according to claim 1, characterized in that, Both the first threaded connection and the middle of the fixed adjustment seat are provided with interconnected through holes; and the liquid guide rod is connected to the through hole opened inside the fixed adjustment seat. The liquid guide rod extends axially toward the movable adjustment module and extends into the movable adjustment module. The side wall of the liquid guide rod is also provided with an outlet for discharging molten plastic. The outer diameter of the liquid guide rod is smaller than the inner diameter of the collar. The discharging element is coaxially fixed at the end of the cone and is used to conduct molten plastic toward the discharging nozzle.

3. The dual-drive adjustable injection nozzle assembly for an injection molding machine according to claim 2, characterized in that, The delivery element includes an extension rod and a delivery head. The extension rod is coaxially fixed at the end of the cone head. The delivery head is coaxially fixed at the end of the extension rod. The delivery head is cylindrical and has an annular groove coaxially formed in the middle of its outer wall. The inner wall of the delivery head also has an annular channel, and multiple sets of annular channels are formed circumferentially along the axis of the extension rod. The entrance of the annular channel is located on the end surface of the delivery head near the extension rod, and the exit is located on the side wall of the annular groove.

4. The dual-drive adjustable injection nozzle assembly for an injection molding machine according to claim 1, characterized in that, The elastic adjustment element includes a protrusion, an extension strip, and a locking wedge. The protrusion is vertically fixed to the side wall of the fixed adjustment module. The extension strip is vertically set on the side of the protrusion near the outlet nozzle, and a locking wedge is fixedly set on the lower surface of the front end of the extension strip. Multiple sets of locking wedges are equidistantly arranged along the long side of the extension strip.

5. The dual-drive adjustable injection nozzle assembly for an injection molding machine according to claim 4, characterized in that, The end of the extension bar is also vertically provided with a stop bar, and the front end of the stop bar is radially arranged toward the side wall of the movable adjustment module. The length of the stop bar is longer than the snap-fit ​​wedge and is close to the side wall of the movable adjustment module.

6. The dual-drive adjustable injection nozzle assembly for an injection molding machine according to claim 3, characterized in that, The outlet nozzle is a tapered guide head; a fourth channel is also coaxially formed inside it for the outlet element to slide inside. And a first annular outlet channel, a second annular outlet channel, and a third annular outlet channel are opened at equal intervals along the rear end of the outlet nozzle to the cone head; The conduction space of the first annular outlet channel, the second annular outlet channel and the third annular outlet channel is set from large to small, and the adjacent first annular outlet channel, second annular outlet channel and third annular outlet channel are all connected by ribs. Multiple sets of ribs are arranged circumferentially along the axis of the outlet nozzle.

7. A dual-drive, rotary adjustable injection nozzle assembly for an injection molding machine according to claim 6, characterized in that, The first annular outlet channel is tapered and circumferentially opened inside it along the axis of the outlet nozzle; The shape of the first annular outlet channel is the same as the shape of the outlet nozzle.

8. A dual-drive, rotary adjustable injection nozzle assembly for an injection molding machine according to claim 6, characterized in that, The outer wall of the outlet nozzle also has a notch.

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