General-purpose heavy-duty knock tool for dismounting injection-molding machine nozzle

Abstract

The utility model discloses a general heavy knock tool for disassembling injection molding machine nozzle, including knock spanner, knock spanner includes spanner main part and two first knock head of being integrally arranged respectively in the both ends of spanner main part, the middle part of spanner main part is equipped with a plurality of operating holes of different model, and spanner main part is provided with the threaded hole corresponding to each operating hole, and each threaded hole is equipped with locking mechanism, locking mechanism includes the plunger body of screwing in the threaded hole, the top rod of being movably installed in the plunger body and the spring of being elastically arranged between the plunger body and the top rod, when the plunger body is rotated to the threaded hole, can make the top rod extend into the operating hole. The utility model can directly adapt to various specifications of injection molding machine nozzle, need not frequently change tool, reduce tool cost and space occupation, and through the self -adaptation of top rod and tight, avoid the damage of nozzle caused by rigid contact, eliminate the risk of jumping, unloading and falling during knocking, guarantee the operation safety.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding machine maintenance tools, and in particular to a general-purpose heavy-duty hammering tool for disassembling injection molding machine nozzles. Background Technology

[0002] As a key component of the injection molding production system, the injection nozzle directly affects the smoothness of melt injection, the molding accuracy of the finished product, and production efficiency. During long-term continuous injection molding operations, the nozzle is prone to various malfunctions due to factors such as raw material characteristics, process parameters, and equipment operating status. Timely disassembly and maintenance are necessary to ensure production continuity. Common malfunction scenarios include: metal impurities mixed in the plastic raw material, causing blockage or scratches in the nozzle's internal channels; carbonization of the plastic material at high temperatures, forming hard carbon deposits that adhere to the nozzle's inner wall, obstructing melt flow; and incomplete cleaning of residual plastic material during switching between different colors or types of plastic materials, leading to color mixing and affecting the appearance quality of the finished product.

[0003] However, disassembling injection molding machine nozzles faces significant technical challenges. The nozzle operates at high temperatures, causing thermal expansion at the threaded connection with mating components. This drastically reduces the thread engagement clearance, and can even lead to metal adhesion, resulting in extremely high disassembly resistance. Conventional hand wrenches and ordinary sockets lack sufficient torque output to overcome this tightening resistance. Even heavy-duty impact tools have several shortcomings that urgently need to be addressed. First, most existing hammering tools are designed for a single specification, only compatible with specific nozzle models, lacking versatility. However, injection molding production requires the selection of nozzles with different diameters and connection specifications according to product requirements, forcing companies to stock multiple specifications of disassembly tools, increasing procurement costs and warehousing space.

[0004] Secondly, operational safety and stability are lacking. During the striking process, traditional heavy-duty striking wrenches suffer from a lack of effective anti-dislodgement and anti-jump designs due to the simple positioning structure of the tool and nozzle. The impact force generated during striking can easily cause the tool to axially jump or circumferentially slide relative to the nozzle, resulting in force dissipation. This not only requires the operator to apply additional force to hold the tool in place, increasing labor intensity, but also may lead to accidents such as injuries from falling tools. Furthermore, the friction and collision between the tool and the nozzle surface during tool jumping can easily damage the nozzle threads or scratch the surface, leading to nozzle failure and increasing equipment maintenance costs.

[0005] Therefore, it is necessary to improve existing technologies to overcome their shortcomings. Utility Model Content

[0006] The problem to be solved by this utility model is to provide a universal heavy-duty hammering tool for disassembling injection molding machine nozzles, so as to overcome the shortcomings of existing injection molding machine nozzle disassembly tools, such as insufficient versatility, low operational stability and low safety.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a general-purpose heavy-duty striking tool for disassembling injection molding machine nozzles, comprising: a striking wrench, the striking wrench comprising a wrench body and two first striking heads integrally disposed at both ends of the wrench body, the wrench body having a plurality of operating holes of different models in the middle, and the wrench body having a threaded hole corresponding to each of the operating holes, a locking mechanism being installed in each of the threaded holes, the locking mechanism comprising a plunger body threadedly connected in the threaded hole, a push rod movably installed in the plunger body, and a spring elastically disposed between the plunger body and the push rod, wherein when the plunger body is screwed toward the threaded hole, the push rod can be extended into the operating hole.

[0008] As a further improvement of this utility model, the plunger body is provided with an internal hexagonal groove at the tail, a receiving cavity in the middle, and a through hole at the head. The spring is located in the receiving cavity, and one end of the spring elastically abuts against the plunger body, while the other end of the spring elastically abuts against the push rod. The end of the push rod that abuts against the spring is provided with an annular mounting platform, which stops on the step around the through hole. The other end of the push rod extends outward from the through hole.

[0009] As a further improvement of this utility model, the operating hole extends along the thickness direction of the wrench body, the threaded hole is opened on the side of the wrench body and communicates with the operating hole, and the axis of the threaded hole is perpendicular to the axis of the operating hole.

[0010] As a further improvement of this utility model, the wrench body is provided with two threaded holes corresponding to each of the operating holes, and the threaded holes are symmetrically distributed on opposite sides of the wrench body.

[0011] As a further improvement of this utility model, the width of the first striking head gradually narrows from one end close to the wrench body toward the other end, and its side includes an arc-shaped transition surface and an inclined surface, which together serve as the striking surface of the first striking head.

[0012] As a further improvement of this utility model, the general-purpose heavy-duty striking tool for disassembling injection molding machine nozzles also includes a force-adding rod. One end of the force-adding rod is provided with a insertion groove that matches the first striking head, and the first striking head can be detachably inserted into the insertion groove.

[0013] As a further improvement of this utility model, the force-adding rod and the first striking head are respectively provided with positioning holes, and positioning pins are installed in the positioning holes.

[0014] As a further improvement of this utility model, the other end of the force-adding rod is provided with a second striking head that is similar in shape to the first striking head.

[0015] As a further improvement of this utility model, the plurality of operating holes are arranged along the length direction of the striking wrench.

[0016] As a further improvement of this utility model, the operating hole is an internal hexagonal hole or a star-shaped hole.

[0017] The beneficial effects of this utility model are as follows: This utility model provides a universal heavy-duty striking tool for disassembling injection molding machine nozzles. By integrating multiple different types of operating holes into the middle of the wrench body, it can directly adapt to various specifications of injection molding machine nozzles, eliminating the need for frequent tool changes and reducing tool costs and storage space occupation. At the same time, the locking mechanism, through the combination design of plunger body, spring and push rod, realizes the elastic extension and retraction of push rod. Screwing in the plunger body allows the push rod to extend into the operating hole and tighten the nozzle, ensuring a tight fit between the tool and the nozzle. The spring also absorbs the impact force of the striking and automatically adjusts the tightening force, avoiding nozzle damage caused by rigid contact, eliminating the risk of jumping, force loss and falling off during striking, and ensuring operational safety. Furthermore, this utility model allows for flexible selection of whether to install a lever depending on the tightness of the nozzle. After installation, the lever arm can be extended, significantly increasing the striking torque, easily handling nozzles that are tightly locked after thermal expansion, and adapting to different disassembly difficulty requirements. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of the striking wrench in the general-purpose heavy-duty striking tool for disassembling injection molding machine nozzles according to this utility model; Figure 2 This is a cross-sectional view of the striking wrench in the general-purpose heavy-duty striking tool for disassembling injection molding machine nozzles according to this utility model; Figure 3 This utility model Figure 2 Enlarged view of section A; Figure 4 This is a front view of the general-purpose heavy-duty hammering tool for disassembling injection molding machine nozzles according to this utility model.

[0020] Referring to the accompanying drawings, the following explanations are provided: 1. Striking wrench; 11. Wrench body; 111. Operating hole; 112. Threaded hole; 12. First striking head; 121. Arc-shaped transition surface; 122. Bevel; 123. Positioning hole; 2. Plunger body; 201. Internal hexagonal groove; 202. Receiving cavity; 203. Through hole; 3. Spring; 4. Push rod; 401. Annular mounting platform; 5. Force lever; 51. Second striking head; 6. Positioning pin. Detailed Implementation

[0021] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0024] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0025] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0026] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0027] See Figures 1 to 3 This utility model provides a universal heavy-duty striking tool for disassembling injection molding machine nozzles, including a flat and elongated striking wrench 1. The striking wrench 1 includes a wrench body 11 and two first striking heads 12 integrally formed at both ends of the wrench body 11. The wrench body 11 has multiple operating holes 111 in the middle, and the multiple operating holes 111 are of different models to adapt to different models of disassembly and assembly objects, such as injection molding machine nozzles. Among them, the first striking heads 12 integrally formed at both ends of the wrench body 11 ensure the overall strength and force stability of the striking structure, avoid torque loss caused by loose connection during striking, and improve the reliability of heavy-duty striking.

[0028] Furthermore, the wrench body 11 is provided with a threaded hole 112 corresponding to each operating hole 111, and a locking mechanism is installed in each threaded hole 112. The locking mechanism is used to lock the injection molding machine nozzle to prevent the wrench 1 from falling off and jumping when it is struck.

[0029] Specifically, the locking mechanism includes a plunger body 2 threadedly connected to the threaded hole 112, a push rod 4 movably installed in the plunger body 2, and a spring 3 elastically disposed between the plunger body 2 and the push rod 4. When the plunger body 2 is screwed toward the threaded hole 112, the push rod 4 can be inserted into the operating hole 111.

[0030] During disassembly, according to the model of the injection molding machine nozzle, place the injection molding machine nozzle into the corresponding operating hole 111, then rotate the plunger body 2 so that the plunger body 2 is screwed toward the threaded hole 112 until the push rod 4 is tightly abutted against the injection molding machine nozzle. Then, use a hammer to strike the striking wrench 1 so that the striking wrench 1 drives the injection molding machine nozzle to rotate, thereby disassembling the injection molding machine nozzle.

[0031] This utility model integrates multiple different types of operating holes 111 into the middle of the wrench body 11, which can be directly adapted to various specifications of injection molding machine nozzles, eliminating the need for frequent tool changes and completely solving the problem of poor versatility of traditional single-specification tools. This reduces tool costs and storage space occupation, and improves disassembly efficiency. At the same time, the locking mechanism, through the combination design of plunger body 2, spring 3 and push rod 4, realizes the elastic extension and retraction of push rod 4. Screwing in plunger body 2 allows push rod 4 to extend into operating hole 111 and tighten against nozzle, ensuring a tight fit between the tool and nozzle. The spring 3 also buffers and absorbs the impact force of the impact, automatically adjusts the tightening force, avoids nozzle damage caused by rigid contact, and eliminates the risk of jumping, force loss and falling off during impact, ensuring operational safety.

[0032] Optionally, the multiple operating holes 111 can be hexagonal socket holes, Torx socket holes, or any combination of both. In this embodiment, the operating hole 111 shown is specifically a hexagonal socket hole.

[0033] Multiple operating holes 111 are arranged along the length of the striking wrench 1, with a neat and orderly layout, which makes it easy for operators to quickly find the operating hole that matches the nozzle specification, thus improving work efficiency. In addition, the arrangement along the length makes reasonable use of the space of the wrench body 11, making the tool structure more compact.

[0034] See Figure 2 and Figure 3 The plunger body 2 is cylindrical, with external threads on its outer circumference for threaded connection with the threaded hole 112. The plunger body 2 also has an internal hexagonal groove 201 at the tail, a receiving cavity 202 in the middle, and a through hole 203 at the head, which connects to the receiving cavity 202. The internal hexagonal groove 201 allows an internal hexagonal wrench to be inserted to rotate the plunger body 2. A spring 3 is located within the receiving cavity 202, with one end elastically abutting against the plunger body 2 and the other end elastically abutting against the push rod 4, forming an adaptive elastic tightening structure. This structure can adjust the tightening force in real time according to slight deformations of the nozzle surface, enhancing the fit and preventing scratches or thread damage to the nozzle surface caused by hard contact. The end of the push rod 4 that abuts against the spring 3 is provided with an annular mounting platform 401. The annular mounting platform 401 is located in the accommodating cavity 202 and is stopped on the steps around the through hole 203 under the elastic force of the spring 3 to prevent the push rod 4 from falling out of the plunger body 2. The other end of the push rod 4 extends outward from the through hole 203 to press against the injection nozzle of the injection molding machine.

[0035] The operating hole 111 extends along the thickness direction of the wrench body 11, and the threaded hole 112 is opened on the side of the wrench body 11 and connects to the operating hole 111. At the same time, the axis of the threaded hole 112 is perpendicular to the axis of the operating hole 111. The locking mechanism is installed in the threaded hole 112 and will not occupy the front space of the wrench 1, ensuring the complete adaptability of the operating hole 111.

[0036] The wrench body 11 is provided with two threaded holes 112 for each operating hole 111, and the threaded holes 112 are symmetrically distributed on opposite sides of the wrench body 11. Each threaded hole 112 is equipped with a locking mechanism, so that the push rod 4 forms a bidirectional clamping and positioning of the nozzle from opposite sides of the wrench body 11, the force is more even, and the nozzle displacement or tool tilting caused by unilateral tightening is avoided, further improving the locking stability.

[0037] See Figure 1 The first striking head 12 gradually narrows in width from one end near the wrench body 11 toward the other end. The first striking head 12 includes a transition portion and a tip portion. The transition portion is roughly a semi-elliptical shape with a beveled top, and the tip portion is conical with rounded corners at the end. In this way, an arc-shaped transition surface 121 and a bevel 122 are formed on the side of the first striking head 12. The arc-shaped transition surface 121 and the bevel 122 are used together as the striking surface of the first striking head 12. The combination of the two makes the striking operation more flexible, the force more even, and improves the disassembly effect.

[0038] It is worth mentioning that, such as Figure 4 As shown, the universal heavy-duty striking tool for disassembling injection molding machine nozzles of this utility model also includes a lever 5. One end of the lever 5 is provided with a groove that matches the first striking head 12, and the first striking head 12 can be detachably inserted into the groove. The lever 5 can be flexibly installed or not depending on the tightness of the nozzle. After installation, the lever arm can be extended, significantly increasing the striking torque, easily dealing with nozzles that are tightly locked after thermal expansion, and adapting to different disassembly difficulty requirements.

[0039] The lever 5 and the first striking head 12 are respectively provided with positioning holes 123, and positioning pins 6 are installed in the positioning holes 123 to ensure that the striking wrench 1 and the lever 5 are stably connected and to prevent them from falling off during striking.

[0040] Furthermore, the other end of the lever 5 is provided with a second striking head 51 that is similar in shape to the first striking head 12, making the striking operation more flexible, the force more even, and improving the disassembly effect.

[0041] Therefore, this utility model, a universal heavy-duty striking tool for disassembling injection molding machine nozzles, integrates multiple different types of operating holes 111 in the middle of the wrench body 11, directly adapting to various specifications of injection molding machine nozzles. This eliminates the need for frequent tool changes, reducing tool costs and storage space. Simultaneously, the locking mechanism, through the combination design of the plunger body 2, spring 3, and push rod 4, allows the push rod 4 to elastically extend and retract. Screwing in the plunger body 2 allows the push rod 4 to extend into the operating hole 111 and tighten against the nozzle. This ensures a tight fit between the tool and the nozzle, while the spring 3 buffers and absorbs the impact force, automatically adjusting the tightening force to avoid nozzle damage caused by rigid contact. It also eliminates the risks of jumping, force loss, and detachment during striking, ensuring operational safety. Furthermore, this utility model allows for flexible selection of whether to install a lever 5 depending on the nozzle's tightness. After installation, the lever arm is extended, significantly increasing the striking torque, easily handling nozzles that are tightly engaged after thermal expansion, adapting to different disassembly difficulties.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A general-purpose heavy-duty striking tool for disassembling injection molding machine nozzles, comprising a striking wrench (1), characterized in that, The striking wrench (1) includes a wrench body (11) and two first striking heads (12) integrally disposed at both ends of the wrench body (11). The wrench body (11) has a plurality of operating holes (111) of different models in the middle. The wrench body (11) is provided with a threaded hole (112) corresponding to each of the operating holes (111). A locking mechanism is installed in each of the threaded holes (112). The locking mechanism includes a plunger body (2) threadedly connected in the threaded hole (112), a push rod (4) movably installed in the plunger body (2), and a spring (3) elastically disposed between the plunger body (2) and the push rod (4). When the plunger body (2) is screwed toward the threaded hole (112), the push rod (4) can be extended into the operating hole (111).

2. The universal heavy-duty hammering tool for disassembling injection molding machine nozzles according to claim 1, characterized in that, The plunger body (2) is provided with an internal hexagonal groove (201) at the tail, a receiving cavity (202) in the middle, and a through hole (203) at the head. The spring (3) is located in the receiving cavity (202), and one end of the spring (3) elastically abuts against the plunger body (2), and the other end of the spring (3) elastically abuts against the push rod (4). The end of the push rod (4) that abuts against the spring (3) is provided with an annular mounting platform (401). The annular mounting platform (401) stops on the steps around the through hole (203), and the other end of the push rod (4) extends outward from the through hole (203).

3. The universal heavy-duty hammering tool for disassembling injection molding machine nozzles according to claim 1, characterized in that, The operating hole (111) extends along the thickness direction of the wrench body (11), and the threaded hole (112) is opened on the side of the wrench body (11) and communicates with the operating hole (111). At the same time, the axis of the threaded hole (112) is perpendicular to the axis of the operating hole (111).

4. The universal heavy-duty hammering tool for disassembling injection molding machine nozzles according to claim 3, characterized in that, The wrench body (11) is provided with two threaded holes (112) for each of the operating holes (111), and the threaded holes (112) are symmetrically distributed on opposite sides of the wrench body (11).

5. The universal heavy-duty hammering tool for disassembling injection molding machine nozzles according to claim 1, characterized in that, The width of the first striking head (12) gradually narrows from one end close to the wrench body (11) toward the other end, and its side includes an arc transition surface (121) and a slope (122), which together serve as the striking surface of the first striking head (12).

6. The universal heavy-duty hammering tool for disassembling injection molding machine nozzles according to claim 1, characterized in that, It also includes a force-adding rod (5), one end of which is provided with a plug groove that matches the first striking head (12), and the first striking head (12) is detachably inserted into the plug groove.

7. The universal heavy-duty hammering tool for disassembling injection molding machine nozzles according to claim 6, characterized in that, The force-adding rod (5) and the first striking head (12) are respectively provided with positioning holes (123), and positioning pins (6) are installed in the positioning holes (123).

8. The universal heavy-duty hammering tool for disassembling injection molding machine nozzles according to claim 6, characterized in that, The other end of the force-adding rod (5) is provided with a second striking head (51) that is similar in shape to the first striking head (12).

9. The universal heavy-duty hammering tool for disassembling injection molding machine nozzles according to claim 1, characterized in that, The plurality of operating holes (111) are arranged along the length of the striking wrench (1).

10. The universal heavy-duty hammering tool for disassembling injection molding machine nozzles according to claim 1, characterized in that, The operating hole (111) is an internal hexagonal hole or a star-shaped hole.

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