Tooth twisting die

Abstract

The utility model relates to a thread twisting die. Comprising a front mold assembly and a rear mold assembly, a liquid injection channel is formed in the front mold assembly, the rear mold assembly can be stacked on the front mold assembly, the rear mold assembly and the front mold assembly can relatively slide and jointly define a cavity, and the cavity communicates with the liquid injection channel; the thread twisting mechanism comprises a driving assembly and a thread twisting shaft, the driving assembly is arranged on the rear mold assembly and drives the thread twisting shaft to rotate, and the thread twisting shaft is arranged in the rear mold assembly in a penetrating mode and extends into the mold cavity; and the pushing mechanism is in sliding connection with the front mold assembly, and the pushing mechanism can extend into the mold cavity. The thread twisting shaft can rotate and extend into the cavity, so that the thread twisting shaft can machine the internal thread of the product, the machining efficiency of the internal thread of the product can be improved, and the working efficiency of the whole thread twisting mold is improved.

Description

Technical Field

[0001] This application relates to the field of mold technology, and in particular to a coiled tooth mold. Background Technology

[0002] Products with internal threads can be manufactured using injection molding. In this process, molten plastic is first injected into the cavity of an injection mold, and then the internal threads are machined into the product. However, traditional molds typically suffer from low efficiency. Utility Model Content

[0003] One of the technical problems addressed in this application is how to improve the working efficiency of coilover molds.

[0004] A coilover mold, comprising:

[0005] The front mold assembly has a liquid injection channel.

[0006] A rear mold assembly, which can be stacked on the front mold assembly, and the rear mold assembly and the front mold assembly can slide relative to each other and jointly form a cavity, the cavity being connected to the injection channel;

[0007] A coiling mechanism, comprising a drive assembly and a coiling shaft, the drive assembly being disposed on the rear mold assembly and driving the coiling shaft to rotate, the coiling shaft passing through the rear mold assembly and extending into the mold cavity; and

[0008] A push mechanism is slidably connected to the front mold assembly and can extend into the cavity.

[0009] In one embodiment, the rear mold assembly includes a rear template and a mounting plate, the rear template and the front mold assembly forming the cavity, the mounting plate being located on the side of the rear template away from the cavity, and the drive assembly being disposed on the mounting plate.

[0010] In one embodiment, the drive assembly includes a drive shaft, a drive gear, and a driven gear. The drive shaft rotatably passes through the mounting plate, the drive gear is fixed on the drive shaft, the driven gear is fixed on the coilover shaft, the driven gear meshes with the drive gear, and the coilover shaft rotatably passes through the mounting plate and the front template.

[0011] In one embodiment, the rear mold assembly further includes a base plate and two side plates, the two side plates being spaced apart on the base plate, the mounting plate being disposed at the end of the side plate away from the base plate, the drive shaft being rotatably inserted through the base plate, and the driving gear and the driven gear being located within the space enclosed by the two side plates.

[0012] In one embodiment, the rear mold assembly further includes a limiting member, which includes a first limiting segment and a second limiting segment. The cross-sectional dimension of the first limiting segment is larger than that of the second limiting segment. The rear mold plate has a first hole and a second hole. The diameter of the first hole is larger than that of the second hole. The second limiting segment slides with the second hole and is fixedly connected to the mounting plate. The first limiting segment slides with the first hole. When the mold is closed, a set distance is maintained between the first limiting segment and the bottom wall surface of the first hole.

[0013] In one embodiment, the rear mold assembly further includes a rear elastic member, and both the rear template and / or the mounting plate have receiving holes, with the rear elastic member received in the receiving holes and abutting between the rear template and the mounting plate.

[0014] In one embodiment, the front mold assembly includes a base and a front template, the front template and the rear mold assembly forming the cavity, the base being disposed on the side of the front template away from the cavity, and the pushing mechanism including a fixedly connected sliding plate and a pushing rod, the sliding plate being slidably disposed between the base and the front template, and the pushing rod being slidably disposed in the front template and extending into the cavity.

[0015] In one embodiment, the base includes a base plate and two support plates, the two support plates being spaced apart and located between the base plate and the front template, and the slide plate being located in the gap between the base plate and the front template.

[0016] In one embodiment, the front mold assembly further includes a front elastic member, and the base and / or the slide plate are provided with receiving holes, the front elastic member being received in the receiving holes and abutting between the base and the slide plate.

[0017] In one embodiment, the system further includes a pull rod and a positioning element. The pull rod has a groove, and the positioning element includes a first positioning section and a second positioning section. The cross-sectional dimension of the first positioning section is larger than the cross-sectional dimension of the second positioning section and the width of the groove. The first positioning section is located outside the groove and abuts against the pull rod along the axial direction of the positioning element. The second positioning section slides in conjunction with the groove and is fixedly connected to the slide plate. The pull rod drives the slide plate to slide through the positioning element.

[0018] One technical effect of one embodiment of this application is that, since the threaded shaft can rotate and extend into the cavity, the threaded shaft can process the internal thread of the product, thereby improving the processing efficiency of the internal thread and thus improving the working efficiency of the entire threaded mold. At the same time, the push mechanism can extend into the cavity, thereby allowing the push mechanism to push the molded product out of the cavity, thereby realizing automatic demolding of the product, which can improve the demolding efficiency of the product and ultimately further improve the working efficiency of the entire threaded mold. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a coilover mold provided in one embodiment.

[0020] Figure 2 for Figure 1 The diagram shows a three-dimensional cross-sectional view of the coilover mold in the first position.

[0021] Figure 3 for Figure 1 The diagram shows a three-dimensional cross-sectional view of the coilover mold in the second position.

[0022] Figure 4 for Figure 1 The diagram shows a three-dimensional cross-sectional view of the coilover mold in the third position.

[0023] Figure 5 for Figure 1 A partial three-dimensional structural diagram of the coilover mold shown.

[0024] Figure 6 for Figure 1 The diagram shows a three-dimensional cross-sectional view of the coilover mold at the fourth position.

[0025] Reference numerals: 10 for coilover mold, 11 for cavity, 20 for product, 100 for front mold assembly, 110 for base, 111 for base plate, 112 for support plate, 120 for front template, 130 for front elastic element, 140 for receiving hole, 150 for nozzle, 151 for injection channel, 200 for rear mold assembly, 210 for rear template, 211 for first hole, 212 for second hole, 220 for mounting plate, 230 for bottom plate, 240 for side plate, 250 for limiting element, 251 for first limiting segment, 252 for second limiting segment, 260 for rear elastic element, 270 for receiving hole, 300 for coilover mechanism, 310 for drive assembly, 313 for drive shaft, 311 for drive gear, 312 for driven gear, 320 for coilover shaft, 400 for pushing mechanism, 410 for slide plate, 420 for pushing rod, 510 for pull rod, 511 for slide groove, 520 for positioning element, 521 for first positioning segment, 522 for second positioning segment. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0032] See Figure 1 , Figure 2 and Figure 3 This application provides an embodiment of a threaded die 10 for molding a product 20 with internal threads. The threaded die 10 includes a front die assembly 100, a rear die assembly 200, a threaded mechanism 300, and a pushing mechanism 400. The front die assembly 100 and the rear die assembly 200 can be stacked on top of each other to jointly form a cavity 11. The front die assembly 100 and the rear die assembly 200 can slide relative to each other to open or close the cavity 11. When the front die assembly 100 and the rear die assembly 200 are in contact with each other and stacked, the threaded die 10 closes and the cavity 11 is closed, thus molding the product 20. When the front die assembly 100 and the rear die assembly 200 slide relative to each other and are spaced apart, the threaded die 10 opens and the cavity 11 is opened, thus removing the molded product 20 from the cavity 11 to achieve demolding of the product 20. The threaded thread mechanism 300 is mounted on the rear mold assembly 200 and is used to process the internal threads on the product 20. The push mechanism 400 is mounted on the front mold assembly 100 and is used to push the product 20 out of the cavity 11 during the mold opening process of the threaded thread mold 10.

[0033] See Figure 1 , Figure 2 and Figure 3In some embodiments, the rear mold assembly 200 includes a rear template 210 and a mounting plate 220. The rear template 210 and the front mold assembly 100 form a cavity 11, and the mounting plate 220 is located on the side of the rear template 210 away from the cavity 11. The rear template 210 and the mounting plate 220 can be slidably connected. However, the relative sliding stroke of the rear template 210 and the mounting plate 220 is limited, meaning that the rear template 210 and the mounting plate 220 can only slide within a limited stroke. The rear mold assembly 200 may also include a limiting member 250, which includes a first limiting segment 251 and a second limiting segment 252. The first limiting segment 251 and the second limiting segment 252 can be coaxially arranged, and the cross-sectional dimension of the first limiting segment 251 is larger than the cross-sectional dimension of the second limiting segment 252. The rear template 210 has a first hole 211 and a second hole 212, which can be coaxially arranged. The diameter of the first hole 211 is larger than that of the second hole 212, and the cross-sectional dimension of the first limiting segment 251 is larger than that of the second hole 212, preventing the first limiting segment 251 from entering the second hole 212. The second limiting segment 252 slides with the second hole 212. One end of the second limiting segment 252 is fixedly connected to the first limiting segment 251, and the other end is fixedly connected to the mounting plate 220. The first limiting segment 251 slides with the first hole 211, and a set distance is maintained between the first limiting segment 251 and the bottom wall of the first hole 211 during mold closing. For example, the limiting member 250 can be a bolt, the second limiting segment 252 can be the shank of the bolt, and the first limiting segment 251 can be the head of the bolt. During the sliding process of the mounting plate 220 away from the rear template 210, when the first limiting segment 251 abuts against the bottom wall surface of the first hole 211, the mounting plate 220 moves to its limit position away from the rear template 210, that is, the mounting plate 220 stops moving away from the rear template 210. Therefore, by setting the limiting member 250, the travel distance of the mounting plate 220 away from the rear template 210 can be effectively limited.

[0034] See Figure 1 , Figure 2 and Figure 3In some embodiments, the rear mold assembly 200 further includes a rear elastic element 260, which may be a spring or the like. Receiving holes 270 are provided on both the rear template 210 and / or the mounting plate 220. For example, only the rear template 210, or only the mounting plate 220, may have receiving holes 270, or both the template and the mounting plate 220 may have receiving holes 270. The rear elastic element 260 is received within the receiving hole 270. By providing the receiving hole 270, the deformation of the rear elastic element 260 can be effectively limited, ensuring that the rear elastic element 260 always deforms along the sliding direction of the rear template 210 relative to the mounting plate 220. During mold closing, the rear elastic element 260 can be compressed to store energy. When the mounting plate 220 moves away from the rear template 210 and slides relative to it, the rear elastic element 260 releases energy, allowing it to push the mounting plate 220 away from the rear template 210.

[0035] See Figure 1 , Figure 2 and Figure 3 In some embodiments, the rear mold assembly 200 further includes a base plate 230 and two side plates 240. The side plates 240 are fixedly connected between the base plate 230 and the mounting plate 220. For example, the side plates 240 can be simultaneously fixedly connected to both the base plate 230 and the mounting plate 220 using bolts. The two side plates 240 are located on the same side in the thickness direction of the base plate 230 and are spaced apart. The mounting plate 220 is located at the end of the side plates 240 away from the base plate 230. Since the side plates 240 are located between the base plate 230 and the mounting plate 220, the base plate 230 and the mounting plate 220 are spaced apart, thereby forming an installation space. This installation space can accommodate a portion of the coilover mechanism 300, providing good protection for the coilover mechanism 300 and preventing it from being disturbed by external factors during operation.

[0036] See Figure 2 , Figure 3 , Figure 4 and Figure 5In some embodiments, the coilover mechanism 300 includes a drive assembly 310 and a coilover shaft 320. The drive assembly 310 is mounted on the mounting plate 220 and drives the coilover shaft 320 to rotate. The coilover shaft 320 is rotatably inserted through the mounting plate 220 and the rear template 210 and extends into the cavity 11. The drive assembly 310 can be a gear-driven mechanism. For example, the drive assembly 310 includes a drive shaft 313, a driving gear 311, and a driven gear 312. The two ends of the drive shaft 313 are rotatably inserted through the mounting plate 220 and the base plate 230, respectively, so that the drive shaft 313 can rotate relative to the mounting plate 220 and the base plate 230. To improve the smoothness and accuracy of the rotation of the drive shaft 313, rotary bearings can also be installed on the mounting plate 220 and the base plate 230, so that the drive shaft 313 passes through the rotary bearings. The driving gear 311 is fixedly sleeved on the drive shaft 313. When the drive shaft 313 rotates relative to the mounting plate 220 and the base plate 230, the driving gear 311 will rotate synchronously with the drive shaft 313 around its axis. The driven gear 312 is disposed on the coilover shaft 320, so that the driven gear 312 is fixedly sleeved on the end of the coilover shaft 320. The driven gear 312 meshes with the driving gear 311. When the driving gear 311 drives the driven gear 312 to rotate, the driven gear 312 will drive the coilover shaft 320 to rotate synchronously around its axis.

[0037] See Figure 2 , Figure 3 , Figure 4 and Figure 5The axes of the drive shaft 313 and the coilover shaft 320 are spaced apart. There can be one drive shaft 313 and one or more coilover shafts 320. When there are multiple coilover shafts 320, their axes are parallel to each other. Each coilover shaft 320 has an equal and one-to-one correspondence with the driven gear 312; that is, each coilover shaft 320 has one driven gear 312. All driven gears 312 surround the driving gear 311 and mesh with it simultaneously. Therefore, when the drive shaft 313 drives the driving gear 311 to rotate, the driving gear 311 will drive all the coilover shafts 320 to rotate synchronously through the driven gears 312. This allows all driven gears 312 to share a single driving gear 311, reducing the number of drive shafts 313 and driving gears 311 used, thus simplifying the structure of the coilover mechanism 300 and the entire coilover mold 10. The coilover shaft 320 can extend into the cavity 11. When the coilover shaft 320 rotates, the thread on the coilover shaft 320 can be copied onto the product 20, thereby realizing the machining of the internal thread of the product 20 by the coilover shaft 320. Each coilover shaft 320 can form the internal thread on one product 20. Therefore, when there are multiple coilover shafts 320, all the coilover shafts 320 can machine the internal threads on multiple products 20. Thus, the same coilover mold 10 can machine multiple products 20 simultaneously, which can reasonably improve the working efficiency of the coilover mold 10. In other embodiments, a linkage mechanism or a belt mechanism can be used to drive the rotation of the coilover shaft 320.

[0038] See Figure 2 , Figure 3 and Figure 4In some embodiments, the front mold assembly 100 includes a base 110 and a front template 120. The front template 120 and the rear mold assembly 200 form a cavity 11. The base 110 is disposed on the side of the front template 120 away from the cavity 11. For example, the base 110 includes a base plate 111 and two support plates 112. The support plates 112 are fixedly connected between the base plate 111 and the front template 120. The two support plates 112 are located on the same side in the thickness direction of the base plate 111 and are spaced apart. The front template 120 is disposed at the end of the support plate 112 away from the base plate 111. Since the support plate 112 is located between the front template 120 and the base plate 111, the front template 120 and the base plate 111 can be spaced apart from each other. This allows the front mold plate 120, base plate 111, and support plate to form a sliding space, within which a portion of the push mechanism 400 can be housed. This sliding space effectively protects the push mechanism 400, preventing it from being disturbed by external forces during operation. The front mold assembly 100 may also include a nozzle 150, which passes through the base plate 111 and the front mold plate 120. The nozzle 150 has an injection channel 151 that connects to the cavity 11. By injecting molten liquid into the injection channel 151, the molten liquid flows into the cavity 11, where it cools and solidifies to form the product 20.

[0039] See Figure 2 , Figure 3 and Figure 4In some embodiments, the pushing mechanism 400 includes a sliding plate 410 and a pushing rod 420. The end of the pushing rod 420 is fixedly connected to the sliding plate 410, and the pushing rod 420 slides through the front template 120. The end of the pushing rod 420 can extend into the cavity 11. The sliding plate 410 is slidably disposed in the gap between the front template 120 and the substrate 111. Since the sliding plate 410 can only slide within the gap between the front template 120 and the substrate 111, and the sliding plate 410 and the pushing rod 420 slide synchronously, the sliding stroke of the pushing rod 420 relative to the front template 120 can be effectively limited. There can be multiple pushing rods 420 and one sliding plate 410. Multiple pushing rods 420 are spaced apart on the sliding plate 410, that is, all pushing rods 420 share one sliding plate 410, so that the sliding plate 410 can drive all pushing rods 420 to move synchronously. Each ejector pin 420 can push one product 20 out of the cavity 11. Therefore, when there are multiple ejector pins 420, all ejector pins 420 can push multiple products 20 out of the cavity 11. Thus, the same threaded die 10 can push out multiple products 20 simultaneously, which can reasonably improve the working efficiency of the threaded die 10. It can be understood that the number of ejector pins 420 and threaded shafts 320 can be equal and correspond one-to-one. The ejector pins 420 and threaded shafts 320 corresponding to the same product 20 can be set coaxially. Therefore, the threaded shaft 320 is responsible for forming the internal thread in the product 20, while the ejector pins 420 are responsible for pushing the formed product 20 out of the cavity 11, thereby realizing the demolding of the product 20.

[0040] See Figure 2 , Figure 3 and Figure 4 In some embodiments, the front mold assembly 100 further includes a front elastic member 130, which may be a spring or the like. A receiving hole 140 is provided on the substrate 111 and / or the slide plate 410. For example, the receiving hole 140 may be provided only on the substrate 111, or only on the slide plate 410, or both the substrate 111 and the slide plate 410 may have receiving holes 140. The front elastic member 130 is housed within the receiving hole 140. By providing the receiving hole 140, the deformation of the front elastic member 130 can be effectively limited, ensuring that the front elastic member 130 always deforms along the sliding direction of the slide plate 410 relative to the substrate 111. During mold closing, the front elastic member 130 can be in its natural state. When the slide plate 410 slides away from the substrate 111 and the mold opens, the front elastic member 130 can be stretched to store energy. When the elastic element returns from the stretched state to the natural state and releases energy, the slide plate 410 can move close to the substrate 111 until it maintains contact with the substrate 111, thus resetting the slide plate 410 and the push rod 420.

[0041] See Figure 1 , Figure 3 and Figure 6 In some embodiments, the coilover mold 10 may further include a pull rod 510 and a positioning element 520. The pull rod 510 may be located on the side of the front mold assembly 100 and the rear mold assembly 200. The pull rod 510 has a sliding groove 511 that extends along the sliding direction of the front mold assembly 100 relative to the rear mold assembly 200. The positioning element 520 includes a first positioning segment 521 and a second positioning segment 522, which are coaxially arranged. The cross-sectional dimensions of the first positioning segment 521 are... The cross-sectional dimension of the first positioning segment 521 is larger than that of the second positioning segment 521, and the cross-sectional dimension of the first positioning segment 521 is larger than that of the slide groove 511, so that the first positioning segment 521 is located outside the slide groove 511. The second positioning segment 522 can extend into the slide groove 511 and be fixedly connected to the slide plate 410. The second positioning segment 522 is slidably engaged with the slide groove 511. The first positioning segment 521 can abut against the pull rod 510 along the axial direction of the positioning member 520, so that the pull rod 510 can abut between the front mold assembly 100 and the first positioning segment 521. For example, the positioning member 520 can be a bolt, the second positioning segment 522 can be the shank of the bolt, and the first positioning segment 521 can be the head of the bolt. When a force is applied to the pull rod 510, the end of the slide groove 511 can contact the positioning member 520, so that the pull rod 510 drives the slide plate 410 away from the substrate 111 through the positioning member 520. Of course, there can be two positioning elements 520. One positioning element 520 is fixedly connected to the slide plate 410, and the other positioning element 520 can be fixedly connected to the rear template 210. In this way, the installation direction of the pull rod 510 is positioned by the two positioning elements 520, ensuring that the slide groove 511 extends along the sliding direction of the front mold assembly 100 relative to the rear mold assembly 200. There can be two pull rods 510, and the two can be located on opposite sides of the front mold assembly 100.

[0042] The working principle of the coilover mold 10 is explained below:

[0043] First, the front mold assembly 100 and the rear mold assembly 200 slide towards each other until they come into full contact to achieve mold closing, that is, the front mold plate 120 and the rear mold plate 210 together form the cavity 11. Then, molten liquid is injected into the cavity 11 through the injection channel 151 at a certain pressure. Then, a certain pressure is maintained to achieve cooling and solidification of the molten liquid to form a blank.

[0044] Then, the drive shaft 313 rotates, which in turn drives the coilover shaft 320 to rotate via the drive gear 311 and the driven gear 312. During the rotation of the coilover shaft 320, the thread can be copied onto the blank, thus transforming the blank with internal threads into product 20. Of course, during the rotation of the coilover shaft 320, with the assistance of the rear elastic element 260, the rear elastic element 260 can push the mounting plate 220 away from the rear template 210, thereby causing the coilover shaft 320 to follow the mounting plate 220 away from the rear template 210. In short, during the rotation of the coilover shaft 320, the coilover shaft 320 will gradually withdraw from product 20 to prevent damage to product 20.

[0045] Finally, the rear template 210 moves away from the front template 120, thereby opening the cavity 11 and pulling the pull rod 510. The pull rod 510 drives the slide plate 410 to move closer to the cavity 11 through the positioning member 520, thereby allowing the push rod 420 to smoothly push the product 20 out of the cavity 11, and finally achieve the demolding of the product 20.

[0046] Since the internal thread of product 20 is processed by rotating the swivel shaft 320, the processing efficiency of the internal thread of product 20 can be improved, thereby improving the working efficiency of the entire swivel mold 10. At the same time, the ejector rod 420 is pushed by the slide plate 410 to push the molded product 20 out of the cavity 11, thereby realizing the automatic demolding of product 20. This can improve the demolding efficiency of product 20, and ultimately further improve the working efficiency of the entire swivel mold 10.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A coiled tooth mold, characterized in that, include: The front mold assembly has a liquid injection channel. A rear mold assembly, which can be stacked on the front mold assembly, and the rear mold assembly and the front mold assembly can slide relative to each other and jointly form a cavity, the cavity being connected to the injection channel; A coiling mechanism, comprising a drive assembly and a coiling shaft, wherein the drive assembly is disposed on the rear mold assembly and drives the coiling shaft to rotate, and the coiling shaft passes through the rear mold assembly and extends into the cavity; and A push mechanism is slidably connected to the front mold assembly and can extend into the cavity; The front mold assembly includes a base and a front template. The front template and the rear mold assembly form the cavity. The base is located on the side of the front template away from the cavity. The pushing mechanism includes a sliding plate and a pushing rod that are fixedly connected. The sliding plate is slidably disposed between the base and the front template. The pushing rod is slidably disposed in the front template and extends into the cavity. It also includes a pull rod and a positioning component. The pull rod has a sliding groove. The positioning component includes a first positioning section and a second positioning section. The cross-sectional dimension of the first positioning section is larger than the cross-sectional dimension of the second positioning section and the width of the sliding groove. The first positioning section is located outside the sliding groove and abuts against the pull rod along the axial direction of the positioning component. The second positioning section slides in conjunction with the sliding groove and is fixedly connected to the slide plate. The pull rod drives the slide plate to slide through the positioning component.

2. The retractable tooth mold according to claim 1, characterized in that, The rear mold assembly includes a rear template and a mounting plate. The rear template and the front mold assembly form the cavity. The mounting plate is located on the side of the rear template away from the cavity. The drive assembly is disposed on the mounting plate.

3. The coiled tooth mold according to claim 2, characterized in that, The drive assembly includes a drive shaft, a drive gear, and a driven gear. The drive shaft rotatably passes through the mounting plate. The drive gear is fixed on the drive shaft. The driven gear is fixed on the coilover shaft. The driven gear meshes with the drive gear. The coilover shaft rotatably passes through the mounting plate and the front template.

4. The coiled tooth mold according to claim 3, characterized in that, The rear mold assembly also includes a base plate and two side plates. The two side plates are spaced apart on the base plate. The mounting plate is located at the end of the side plate away from the base plate. The drive shaft is rotatably inserted through the base plate. The driving gear and the driven gear are located within the space enclosed by the two side plates.

5. The coiled tooth mold according to claim 2, characterized in that, The rear mold assembly further includes a limiting member, which includes a first limiting segment and a second limiting segment. The cross-sectional dimension of the first limiting segment is larger than that of the second limiting segment. The rear mold plate has a first hole and a second hole. The diameter of the first hole is larger than that of the second hole. The second limiting segment slides with the second hole and is fixedly connected to the mounting plate. The first limiting segment slides with the first hole. When the mold is closed, a set distance is maintained between the first limiting segment and the bottom wall surface of the first hole.

6. The coiled tooth mold according to claim 2, characterized in that, The rear mold assembly also includes a rear elastic element. The rear template and / or the mounting plate are provided with receiving holes. The rear elastic element is received in the receiving holes and abuts between the rear template and the mounting plate.

7. The coiled tooth mold according to claim 6, characterized in that, The rear elastic element is a spring.

8. The coiled tooth mold according to claim 1, characterized in that, The base includes a base plate and two support plates, which are spaced apart and located between the base plate and the front template. The slide plate is located in the gap between the base plate and the front template.

9. The coiled tooth mold according to claim 1, characterized in that, The front mold assembly further includes a front elastic member, and the base and / or the slide plate are provided with receiving holes, the front elastic member being received in the receiving holes and abutting between the base and the slide plate.

10. The coiled tooth mold according to claim 9, characterized in that, The front elastic element is a spring.

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