Injection molding machine nozzle locking device

Abstract

This application belongs to the field of injection molding machine technology, specifically relating to an injection molding machine nozzle locking device, including a nozzle assembly and a locking assembly. The nozzle assembly includes a nozzle component and a connecting component. The locking assembly includes a fixing component, a transmission component, and at least one set of elastic elements. The side of the fixing component away from the mold platen is opposite to the side of the transmission component close to the mold platen, and the elastic elements are located between the fixing component and the transmission component. One end of the elastic element abuts against the side of the fixing component facing the mold platen, and the other end abuts against the side of the transmission component away from the mold platen. When the nozzle component contacts the mold and continuously moves towards the mold side, the transmission component moves away from the mold platen under the drive of the connecting component to compress the elastic element located between the transmission component and the fixing component, and the elastic element is in a first deformation state. In this application, the nozzle and the mold can maintain a tight locking state.

Description

Technical Field

[0001] This application belongs to the field of injection molding machine technology, and specifically relates to an injection molding machine nozzle locking device. Background Technology

[0002] During the operation of an injection molding machine, the nozzle needs to be tightly connected to the mold to ensure that the molten plastic can be accurately and stably injected into the mold cavity. However, existing injection molding machine nozzles often have unstable connections with the mold, leading to problems such as material leakage and unstable pressure during injection, affecting product quality and production efficiency. Therefore, a device that can effectively lock the nozzle is needed to improve the working performance of the injection molding machine. Utility Model Content

[0003] The purpose of this application is to solve the problem of unstable connection between the nozzle and the mold in the prior art, which leads to problems such as material leakage and unstable pressure during the injection molding process.

[0004] This application provides a nozzle locking device for an injection molding machine, comprising: a nozzle assembly disposed opposite to a fixed template fixed on a mounting platform; the nozzle assembly including a nozzle component and a connecting component for connecting to the nozzle component; the nozzle component being movable toward the fixed template side; and the connecting component being slidably connected to the mounting platform; and a locking assembly disposed on the side of the fixed template facing the nozzle assembly; the locking assembly including a fixing component, a transmission component, and at least one set of elastic members; one end of the fixing component being connected to the fixed template, and the other end extending toward one side of the nozzle assembly; one end of the transmission component being disposed opposite to the end of the fixing component away from the fixed template, and the transmission component being slidable relative to the fixing component. The other end of the component extends away from the fixed template and is connected to the connecting component; the elastic element is disposed between the fixed component and the transmission component, and extends in the moving direction of the nozzle component. One end of the elastic element abuts against the side of the fixed component facing the fixed template, and the other end abuts against the side of the transmission component away from the fixed template; wherein, a mold is provided on the side of the fixed template away from the nozzle assembly, and when the nozzle component contacts the mold and continuously moves towards the mold side, the transmission component moves away from the fixed template under the drive of the connecting component to compress the elastic element located between the transmission component and the fixed component, and the elastic element is in a first deformation state.

[0005] In one exemplary embodiment of this application, when the nozzle component does not move toward the fixed template side, the elastic member is in a second deformation state between the fixed component and the transmission component, and the deformation amount of the second deformation state is less than the deformation amount of the first deformation state.

[0006] In one exemplary embodiment of this application, the fixing component includes: a pull rod, one end of which is connected to the fixed template and extends toward one side of the nozzle assembly; a thrust plate, which is connected to the pull rod away from the fixed template and is disposed opposite to the end of the transmission component away from the connecting component; a spring spindle, one end of which is connected to the thrust plate and the other end of which extends toward the fixed template and passes through the end of the transmission component away from the connecting component; an elastic element is sleeved on the spring spindle, the transmission component is capable of sliding along the axial direction of the spring spindle, and the elastic element is capable of elastic deformation.

[0007] In one exemplary embodiment of this application, the pull rod is detachably connected to the fixed template via a fixing nut.

[0008] In one exemplary embodiment of this application, the pull rod and the thrust plate are detachably connected by a lock nut.

[0009] In one exemplary embodiment of this application, the spring spindle and the thrust plate are detachably connected by fixing screws.

[0010] In one exemplary embodiment of this application, the transmission component includes: a tension rod, one end of which is connected to the connecting component, and the other end extending toward one side of the fixed template and passing through the thrust plate; a pull plate, which is disposed opposite to the thrust plate and connected to the tension rod passing through the thrust plate, the pull plate having a through hole for the tension rod to pass through and a sliding hole for the spring spindle to pass through, the tension rod passing through the through hole and being detachably connected to the thrust plate, the spring spindle being able to slide at the sliding hole, one end of the elastic element abutting against the side of the pull plate away from the fixed template, and the other end abutting against the side of the thrust plate close to the fixed template.

[0011] In one exemplary embodiment of this application, a limiting portion is provided at one end of the spring spindle away from the thrust plate, and the limiting portion can abut against the side of the pull plate near the fixed template.

[0012] In one exemplary embodiment of this application, the tension rod includes a first tension rod and a second tension rod, the first tension rod and the second tension rod being respectively disposed on both radial sides of the tension rod.

[0013] In one exemplary embodiment of this application, the locking assembly includes a first elastic member and a second elastic member, the first elastic member and the first tension rod being disposed on one side of the radial direction of the tension rod, and the second elastic member and the second tension rod being disposed on the other side of the radial direction of the tension rod.

[0014] The injection molding machine nozzle locking device of this application has at least the following beneficial effects:

[0015] This application includes a nozzle assembly and a locking assembly. The nozzle assembly includes a nozzle component and a connecting component. The locking component includes a fixing component, a transmission component, and at least one set of elastic elements. When the nozzle component contacts the mold and continues to advance towards the mold side, the mold applies a reaction force to the nozzle component due to the constraint of the mold. This reaction force causes the connecting component to slide on the mounting platform, moving it away from the fixed mold plate. Since the connecting component is connected to the transmission component, during the movement of the connecting component, the transmission component also moves away from the fixed mold plate under the action of the connecting component, thereby compressing the elastic element located between the transmission component and the fixing component, causing the elastic element to be in a first deformation state. At this time, the elastic element stores a large amount of elastic potential energy, which generates a thrust opposite to the reaction force, thereby maintaining a tight locking state between the nozzle and the mold, effectively avoiding problems such as material leakage and unstable pressure during the injection process, and strongly ensuring product quality and production efficiency.

[0016] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0019] Figure 1 A schematic diagram of a downward nozzle inserted into the center hole of a fixed template, according to an embodiment of this application, is shown.

[0020] Figure 2 This illustration shows a schematic diagram of a nozzle inserted into the center hole of a fixed template in another direction, according to an embodiment of this application.

[0021] Figure 3This diagram shows an exploded structural schematic of a downward transmission component and a fixing component provided in an embodiment of this application.

[0022] Figure 4 An exploded structural diagram of the transmission component and the fixing component in another direction provided in an embodiment of this application is shown.

[0023] Figure 5 This diagram shows a partial cross-sectional view of the template, nozzle assembly, and locking assembly provided in an embodiment of this application.

[0024] Figure 6 A partial cross-sectional structural diagram of an elastic element provided between the thrust plate and the pull plate according to an embodiment of this application is shown.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100. Injection molding machine nozzle locking device;

[0027] 110. Nozzle assembly; 111. Nozzle component; 1110. Drive unit; 1111. Barrel; 1112. Nozzle; 112. Connecting component;

[0028] 120. Locking assembly; 121. Fixing component; 1210. Pull rod; 1211. Push plate; 1212. Spring spindle; 1212a. Limiting part; 1213. Fixing nut; 1214. Locking nut; 1215. Fixing screw; 122. Transmission component; 1220. Pull rod; 1220a. First pull rod; 1220b. Second pull rod; 1221. Pull plate; 123. Elastic element; 123a. First elastic element; 123b. Second elastic element;

[0029] 200, fixed template; 210, center hole. Detailed Implementation

[0030] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0031] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0034] Figure 1 A schematic diagram of a downward-facing nozzle inserted into the center hole of a fixed template is shown. Figure 2 A schematic diagram of a structure in which a nozzle is inserted into the center hole of a fixed template from another direction is shown. Figure 3 A schematic diagram showing the disassembled structure of the downward transmission component and the fixed component is provided. Figure 4 A schematic diagram showing the disassembled structure of the transmission and stationary components in another direction is shown. Figure 5 A partial cross-sectional view of the template, nozzle assembly, and locking assembly is shown in the side view. Figure 6 A partial cross-sectional schematic diagram is shown, illustrating the structure with an elastic element between the thrust plate and the pull plate.

[0035] In the field of injection molding production, ensuring the stability and precision of the injection molding process is crucial for achieving high-quality product output. The injection molding machine nozzle locking device 100 provided in this application embodiment effectively solves problems such as easy displacement of the nozzle assembly 110 and unstable material injection during injection molding operations, providing reliable technical support for improving the quality of injection molded products and production efficiency.

[0036] See Figure 1 As shown in the figure, this application embodiment provides an injection molding machine nozzle locking device 100, which includes a nozzle assembly 110 and a locking assembly 120. The nozzle assembly 110 can inject material into the mold (not shown in the figure), and the locking assembly 120 can lock the nozzle assembly 110 to prevent the nozzle assembly 110 from deviating during operation, ensuring the stability and accuracy of the injection molding operation, thereby avoiding adverse phenomena such as material leakage and injection pressure fluctuation caused by nozzle 1112 deviation that affect product quality.

[0037] Among them, see Figure 1 and Figure 2 As shown, the nozzle assembly 110 is disposed opposite to the fixed template 200 fixed on the mounting platform (not shown in the figure). The nozzle assembly 110 includes a nozzle component 111 and a connecting component 112 for connecting with the nozzle component 111. The nozzle component 111 can move toward the fixed template 200 side, and the connecting component 112 is slidably connected to the mounting platform.

[0038] In some embodiments of this application, see Figure 1 As shown, the nozzle assembly 111 includes a drive unit 1110, a barrel 1111, and a nozzle 1112. The nozzle 1112 is connected to the drive unit 1110 via the barrel 1111. The drive unit 1110 can flexibly select either hydraulic or electric drive according to different production needs. If hydraulic drive is used, the high-pressure oil in the hydraulic system drives the piston to move, thereby moving the barrel 1111 axially. If electric drive is used, the rotational motion output by the motor is converted into linear motion through a transmission mechanism, thereby moving the barrel 1111. Regardless of the drive method used, the drive unit 1110 can accurately move the barrel 1111 axially, thereby pushing the nozzle 1112 closer to the fixed template 200.

[0039] The template 200 is securely mounted on the mounting platform, with a meticulously machined center hole 210 whose center line is precisely aligned with the axis of the nozzle 1112. (See also...) Figure 1 and Figure 2 As shown, when the driving component 1110 drives the barrel 1111 to move, the nozzle 1112 can smoothly pass through the central hole 210 and make close contact with the mold on the other side of the fixed platen 200, so as to accurately inject the high-temperature molten material into the mold cavity and complete the injection molding operation.

[0040] In some embodiments of this application, a slide rail (not shown in the figure) or a linear rail (not shown in the figure) is provided on the mounting platform to provide stable guidance for the sliding of the connecting component 112. The connecting component 112 is tightly engaged on the slide rail or linear rail by a precisely designed slider or roller structure, so that the connecting component 112 can slide smoothly on the mounting platform, ensuring the stability and accuracy of the nozzle 1112 during movement.

[0041] In some embodiments of this application, see Figure 1 As shown, the locking assembly 120 is located on the side of the fixed template 200 facing the nozzle assembly 110. The locking assembly 120 includes a fixing component 121, a transmission component 122, and at least one set of elastic elements 123.

[0042] Among them, see Figure 1 and Figure 2As shown, one end of the fixing component 121 is detachably connected to the fixed template 200, facilitating disassembly and installation during equipment maintenance or component replacement. The other end of the fixing component 121 extends toward the nozzle assembly 110. One end of the transmission component 122 is positioned opposite the side of the fixing component 121 away from the fixed template 200, and the transmission component 122 is slidable relative to the fixing component 121. The other end of the transmission component 122 extends away from the fixed template 200 in the same direction as the fixing component 121, and is connected to the connecting component 112.

[0043] The elastic element 123 can be a compression spring. The elastic element 123 extends in the moving direction of the nozzle 1112. One end of the elastic element 123 abuts against the side of the fixed member 121 facing the fixed template 200, and the other end abuts against the side of the transmission member 122 away from the fixed template 200. That is, the elastic element 123 can be located between the transmission member 122 and the fixed member 121.

[0044] When the nozzle 1112 contacts the mold and continues to advance towards the mold side, the mold applies a reaction force to the nozzle 1112 due to the restriction of the nozzle 1112. This reaction force causes the connecting component 112 to slide on the mounting platform, moving it away from the fixed template 200. Since the connecting component 112 is connected to the transmission component 122, during the movement of the connecting component 112, the transmission component 122 also moves away from the fixed template 200 under the action of the connecting component 112, thereby compressing the elastic element 123 located between the transmission component 122 and the fixed component 121, causing the elastic element 123 to be in a first deformation state. At this time, the elastic element 123 stores a large amount of elastic potential energy, which generates a thrust opposite to the reaction force, thereby maintaining a tight lock between the nozzle 1112 and the mold, effectively avoiding problems such as material leakage and unstable pressure during the injection process, and strongly ensuring product quality and production efficiency.

[0045] In some embodiments of this application, when the nozzle 1112 is not moving toward the fixed template 200, the elastic member 123 is in a second deformation state between the fixed member 121 and the transmission member 122. The deformation of the second deformation state is less than that of the first deformation state, and the thrust generated in the second deformation state is less than that generated in the first deformation state.

[0046] In other words, in the initial state, the elastic element 123 has a certain pre-deformation between the transmission component 122 and the fixed component 121. This pre-deformation is mainly used to overcome the friction between the connecting component 112 and the linear guide when the nozzle 1112 moves toward the fixed template 200.

[0047] It should be noted that when the frictional force is balanced with the thrust of the elastic element 123 in the second deformation state, the elastic element 123 does not compress.

[0048] In some embodiments of this application, see Figure 3 and Figure 4 As shown, the fixing component 121 includes a pull rod 1210, a thrust plate 1211, and a spring spindle 1212. One end of the pull rod 1210 is detachably connected to the fixed template 200, and the other end is detachably connected to the thrust plate 1211, thereby making the assembly and disassembly of the fixing component 121 more convenient. The thrust plate 1211 is arranged opposite to the fixed template 200 and is parallel to it.

[0049] Among them, see Figure 5 and Figure 6 As shown, one end of the spring spindle 1212 is detachably connected to the thrust plate 1211 and contacts the side of the thrust plate 1211 facing the fixed template 200. The other end of the spring spindle 1212 extends towards one side of the fixed template 200 and passes through the end of the transmission component 122 near the fixed template 200. The elastic element 123 is sleeved on the outside of the spring spindle 1212 and located between the transmission component 122 and the thrust plate 1211. The transmission component 122 can slide along the axial direction of the spring spindle 1212, that is, the transmission component 122 can move towards or away from the thrust plate 1211, thereby compressing the elastic element 123 between the transmission component 122 and the thrust plate 1211, thereby changing the deformation state of the elastic element 123.

[0050] In some embodiments of this application, the tie rod 1210 and the fixed template 200 can be connected by a connection structure such as screws, rivets or nuts.

[0051] For example, see Figure 2 As shown, the tie rod 1210 and the fixed template 200 can be detachably connected via the fixing nut 1213. This connection method is simple to operate; simply tighten or loosen the fixing nut 1213 to complete the connection or disassembly, which greatly improves the efficiency of equipment maintenance.

[0052] In some embodiments of this application, the pull rod 1210 and the thrust plate 1211 can also be connected by a connection structure such as screws, rivets or nuts.

[0053] For example, see Figure 6 As shown, the tie rod 1210 and the thrust plate 1211 can be detachably connected by locking nut 1214, which makes the installation and disassembly of the tie rod 1210 and the fixed template 200 more convenient and quick.

[0054] In some embodiments of this application, the spring spindle 1212 and the thrust plate 1211 can also be connected by a connection structure such as screws, rivets or nuts.

[0055] For example, see Figure 6 As shown, the spring spindle 1212 and the thrust plate 1211 can be detachably connected by fixing screws 1215, which makes the installation and disassembly of the pull rod 1210 and the fixed template 200 more convenient and quick.

[0056] In some embodiments of this application, see Figure 6 As shown, the transmission component 122 includes a tension rod 1220 and a pull plate 1221. One end of the tension rod 1220 is connected to the connecting component 112, and the other end passes through the thrust plate 1211 and is detachably connected to the pull plate 1221. That is, the thrust plate 1211 has an opening (not shown in the figure) through which the tension rod 1220 passes, and the tension rod 1220 is detachably connected to the pull plate 1221 through this opening. The pull plate 1221 and the thrust plate 1211 are arranged opposite to each other.

[0057] In some embodiments of this application, the pull plate 1221 is provided with a through hole (not shown in the figure) through which the pull rod 1210 passes, and the pull rod 1210 is detachably connected to the thrust plate 1211 through this through hole. It is understood that the diameter of the through hole is larger than the size of the pull rod 1210, so that the pull plate 1221 can slide in the axial direction of the pull rod 1210.

[0058] In some embodiments of this application, the pull plate 1221 is also provided with a sliding hole (not shown in the figure) through which the spring spindle 1212 passes. One end of the spring spindle 1212 is detachably connected to the thrust plate 1211, and the other end passes through this sliding hole.

[0059] It should be noted that, see Figure 6 As shown, the size of the spring spindle 1212 is smaller than the diameter of the sliding hole to ensure that the spring spindle 1212 can slide within the sliding hole.

[0060] Furthermore, one end of the elastic element 123 abuts against the side of the pull plate 1221 away from the fixed template 200, and the other end abuts against the side of the push plate 1211 close to the fixed template 200. As the pull plate 1221 moves toward the push plate 1211, the spring spindle 1212 can slide within this sliding hole, thereby compressing the elastic element 123 located between the pull plate 1221 and the push plate 1211.

[0061] In some embodiments of this application, see Figure 6As shown, a limiting part 1212a is provided at the end of the spring spindle 1212 away from the thrust plate 1211. The limiting part 1212a is located on the side of the pull plate 1221 near the fixed template 200. When the nozzle 1112 is not moving, the limiting part 1212a abuts against the side of the pull plate 1221 near the fixed template 200, thereby restricting the pull plate 1221 from sliding out of the spring spindle 1212, ensuring that the elastic element 123 has a certain pre-deformation, and thus balancing the friction between the connecting component 112 and the linear guide.

[0062] It is worth mentioning that the side of the tension rod 1220 facing the tension rod 1210 is the inner side, and the opposite side is the outer side. The spring spindle 1212 and the elastic element 123 are both located on the outer side of the tension rod 1220, which allows for effective observation of the compression deformation of the elastic element 123 and reduces the failure rate.

[0063] In some embodiments of this application, see Figure 6 As shown, the tension rod 1220 includes a first tension rod 1220a and a second tension rod 1220b, which are respectively located on both radial sides of the tension rod 1210. By providing two tension rods 1220 on both radial sides of the tension rod 1210, the tension plate 1221 can be effectively moved, thereby effectively compressing the elastic element 123, and thus effectively ensuring that the nozzle 1112 and the mold remain locked together.

[0064] In some embodiments of this application, see Figure 6 As shown, the locking assembly 120 includes a first elastic element 123a and a second elastic element 123b, which are respectively disposed on the outer sides of the first tension rod 1220a and the second tension rod 1220b. That is, the first elastic element 123a and the first tension rod 1220a are disposed on one side of the pull rod 1210, and the second elastic element 123b and the second tension rod 1220b are disposed on the other radial side of the pull rod 1210.

[0065] It is worth mentioning that the parameters of the first elastic element 123a and the second elastic element 123b are completely identical. This symmetrical arrangement of the two elastic elements 123 effectively generates sufficient thrust, ensuring that the nozzle 1112 and the mold always maintain a good locking state, further improving the stability and reliability of the device.

[0066] In some embodiments of this application, the tension rod 1220 and the pull plate 1221 can be connected by a fixing structure such as screws, bolts or rivets.

[0067] For example, the tension rod 1220 and the pull plate 1221 can be connected by screws, making the installation and disassembly of the tension rod 1220 and the pull plate 1221 more convenient and quick.

[0068] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. A nozzle locking device for an injection molding machine, characterized in that, include: A nozzle assembly is disposed opposite to a fixed template fixed on a mounting platform. The nozzle assembly includes a nozzle component and a connecting component for connecting to the nozzle component. The nozzle component is movable toward the fixed template side, and the connecting component is slidably connected to the mounting platform. A locking assembly is disposed on the side of the fixed template facing the nozzle assembly. The locking assembly includes a fixing component, a transmission component, and at least one set of elastic elements. One end of the fixing component is connected to the fixed template, and the other end extends toward one side of the nozzle assembly. One end of the transmission component is disposed opposite to the end of the fixing component away from the fixed template, and the transmission component is slidable relative to the fixing component. The other end of the transmission component extends toward the side away from the fixed template and is connected to the connecting component. The elastic element is disposed between the fixing component and the transmission component, and extends in the moving direction of the nozzle assembly. One end of the elastic element abuts against the side of the fixing component facing the fixed template, and the other end abuts against the side of the transmission component away from the fixed template. Wherein, a mold is provided on the side of the fixed template away from the nozzle assembly. When the nozzle component contacts the mold and moves continuously toward the mold side, the transmission component moves away from the fixed template under the drive of the connecting component to compress the elastic member located between the transmission component and the fixed component. The elastic member is in a first deformation state.

2. The injection molding machine nozzle locking device according to claim 1, characterized in that, When the nozzle component does not move toward the fixed template side, the elastic element is in a second deformation state between the fixed component and the transmission component, and the deformation of the second deformation state is less than the deformation of the first deformation state.

3. The injection molding machine nozzle locking device according to claim 1, characterized in that, The fixing component includes: A pull rod, one end of which is connected to the fixed template and extends toward one side of the nozzle assembly; The thrust plate is connected to the side of the pull rod away from the fixed template and is positioned opposite to the end of the transmission component away from the connecting component; A spring spindle, one end of which is connected to the thrust plate, and the other end extends toward the side closer to the fixed template and passes through the end of the transmission component away from the connecting component. An elastic element is sleeved on the spring spindle, the transmission component can slide along the axial direction of the spring spindle, and the elastic element can undergo elastic deformation.

4. The injection molding machine nozzle locking device according to claim 3, characterized in that, The tie rod is detachably connected to the fixed template via a fixing nut.

5. The injection molding machine nozzle locking device according to claim 3, characterized in that, The pull rod and the thrust plate are detachably connected by a lock nut.

6. The injection molding machine nozzle locking device according to claim 3, characterized in that, The spring spindle and the thrust plate are detachably connected by fixing screws.

7. The injection molding machine nozzle locking device according to claim 3, characterized in that, The transmission component includes: A tension rod, one end of which is connected to the connecting component, and the other end extends toward one side of the fixed template and passes through the thrust plate; A pull plate is disposed opposite to the push plate and connected to the pull rod that passes through the push plate. The pull plate is provided with a through hole for the pull rod to pass through and a sliding hole for the spring spindle to pass through. The pull rod passes through the through hole and is detachably connected to the push plate. The spring spindle can slide at the sliding hole. One end of the elastic element abuts against the side of the pull plate away from the fixed template, and the other end abuts against the side of the push plate close to the fixed template.

8. The injection molding machine nozzle locking device according to claim 7, characterized in that, The end of the spring spindle away from the thrust plate is provided with a limiting part, which can abut against the side of the pull plate near the fixed template.

9. The injection molding machine nozzle locking device according to claim 7, characterized in that, The tension rod includes a first tension rod and a second tension rod, which are respectively located on both radial sides of the tension rod.

10. The injection molding machine nozzle locking device according to claim 9, characterized in that, The locking assembly includes a first elastic element and a second elastic element. The first elastic element and the first tension rod are located on one side of the radial direction of the tension rod, and the second elastic element and the second tension rod are located on the other side of the radial direction of the tension rod.

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