Locking assembly, locking mechanism and injection mold

Abstract

The present invention discloses a locking assembly, a locking mechanism and an injection mold, wherein the locking assembly comprises a locking ring and a locking piece; the locking ring is connected to a threaded column and rotates synchronously, and the locking ring is provided with a locking groove; the locking piece is located beside the locking ring and overlaps the locking ring; the locking ring is driven by the threaded column to guide the locking piece into the locking groove; the locking piece is locked and positioned with the locking groove to stop the threaded column from rotating. When the locking piece and the locking groove of the locking ring are locked and positioned, the threaded column is positioned to stop rotating, which effectively solves the technical problem of large differences in product thread structure and achieves the purpose of uniform product thread structure.

Description

Technical Field

[0001] The invention relates to the field of mold design and manufacturing, and in particular to a locking component, a locking mechanism and an injection mold. Background Art

[0002] like Fig.10 The product A shown has a product thread A2 on the inner side of one end. In order to process the product thread A2 during the injection molding process, the conventional method is to add a thread column B and a driving component that drives the thread column B to rotate in the injection mold. Using the above conventional method (i.e., traditional technical solution), several products A have product threads A2 with different structures, especially the focus of product thread A2, which leads to a lower product qualification rate and potential risks. If there is a problem with the product during use, it will directly affect the safety of the product and even involve the personal safety of the operator or related persons.

[0003] In summary, how to solve the technical problem of inconsistent screw thread structure in the existing screw thread injection molding one-time processing is one of the important technical problems that technical personnel in this field need to solve. Summary of the invention

[0004] In order to solve the technical problems existing in the prior art, an object of the present invention is to provide a locking assembly, a locking mechanism and an injection mold.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A locking assembly comprises a locking ring and a locking member, wherein:

[0007] A retaining ring is connected to the threaded rod and rotates synchronously. The retaining ring is provided with a retaining groove, and the retaining groove has a retaining direction opposite to the rotation direction of the threaded rod during machining.

[0008] A locking piece, which is located beside the locking ring and overlaps the locking ring;

[0009] The locking ring driven by the twisting tooth column is synchronously reversed to guide the locking piece into the locking groove, and the locking piece is engaged with the locking groove to stop the twisting tooth column from rotating, thereby achieving positioning locking.

[0010] Further preferably, one end of the locking member is hingedly installed, and the other end is overlapped with the locking ring.

[0011] Further preferably, it also includes a stopper, which is fixedly installed and connected to the locking member via a spring.

[0012] A locking mechanism comprises a driving assembly and at least two of the above-mentioned locking assemblies, wherein:

[0013] The locking ring and the driven gear of the locking assembly are both connected to the threaded tooth column;

[0014] The driving teeth in the driving assembly are meshed and transmitted with the driven teeth of the threaded rod to drive the threaded rod and the retaining ring to rotate synchronously.

[0015] Further preferably, the driving assembly comprises a driving member, a transmission member and the driving teeth which are linked in sequence.

[0016] Further preferably, the eight locking components are divided into two groups, and each group of locking components is linked with the driving component through the same driving tooth;

[0017] The two driving teeth are driven by the same transmission member.

[0018] Further preferably, the eight locking components are arranged in a matrix.

[0019] An injection mold comprises a mold frame, a mold core, a threaded rod and the above-mentioned locking mechanism, wherein:

[0020] The mold core has a molding cavity and is installed in the mold frame;

[0021] The threaded rod is installed in the movable die set of the die frame and extends into the molding cavity;

[0022] The locking mechanism is installed in cooperation with the movable die set of the die frame;

[0023] After the mold core is opened along with the mold frame, the driving assembly of the locking mechanism drives the threaded rod to rotate to eject the product;

[0024] The locking assembly of the locking mechanism stops the rotation of the threaded rod to position and lock it.

[0025] Further preferably, the mold frame includes a static mold set and a dynamic mold set, wherein:

[0026] The static mold assembly comprises a static mold top plate, a hot runner mold plate and a static mold plate which are arranged in sequence, and the static mold top plate is fixedly connected to the hot runner mold plate;

[0027] The movable die set and the static die set move synchronously in a direction away from the static die set to perform a mold opening movement;

[0028] The movable mold assembly is separated from the static mold plate and performs a secondary mold opening movement to drive the mold core to open the mold; the driving component drives the locking component to rotate to eject the product.

[0029] After adopting the above technical solution, the present invention has the following advantages compared with the background technology:

[0030] The present technical scheme develops a locking assembly, which mainly includes a locking part and a locking ring. The locking ring rotates synchronously with the thread column to realize the screw thread forming processing; then, the thread column is controlled to drive the locking ring to reverse, and the flipped locking ring is engaged with the locking part to position the thread column to prevent rotation, so as to realize the positioning and locking of the thread column in a fixed position, thereby ensuring the consistency of the product screw thread processing, effectively solving the technical problem of large differences in the product screw thread structure, and obtaining products with consistent product screw thread structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural perspective view of the locking assembly in an embodiment of the present invention;

[0032] Figure 2 is a top view of the locking assembly in an embodiment of the present invention;

[0033] Figure 3 is a partial structural exploded view of the locking assembly in an embodiment of the present invention;

[0034] Figure 4 is a structural exploded view of the locking assembly in an embodiment of the present invention;

[0035] Figure 5 Schematic diagram of the structure of the locking mechanism in the embodiment of the present invention Figure 1 ;

[0036] Figure 6 Schematic diagram of the structure of the locking mechanism in the embodiment of the present invention Figure 2 ;

[0037] Figure 7 is a structural cross-sectional view of the locking mechanism described in an embodiment of the present invention;

[0038] Figure 8 is a schematic structural diagram of the injection mold in an embodiment of the present invention;

[0039] Fig. 9 is a structural cross-sectional view of the injection mold described in an embodiment of the present invention;

[0040] Fig.10 It is a product obtained by processing the injection mold described in the embodiment of the present invention.

[0041] The symbols of the drawings in the above specification are explained as follows:

[0042] A-product; A1-product through hole; A3-product thread;

[0043] B-twisted tooth column B;

[0044] 100-locking assembly; 110-stopper; 120-spring; 130-locking member; 140-locking ring; 141-center hole of the snap ring; 142-slot; 150-driven tooth;

[0045] 200-driving assembly; 210-driving member; 220-first transmission tooth; 230-transmission shaft; 240-second transmission tooth; 250-driving tooth;

[0046] 310-static mold top plate; 320-hot runner mold plate; 330-static mold plate;

[0047] 410-moving mold plate; 420-moving mold pad; 430-moving mold fixing plate; 440-square iron; 450-moving mold bottom plate; 510-static mold core; 520-moving mold core. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] Example

[0051] In order to solve the problem that after the thread forming process A2 of the product is completed by the thread mechanism, the thread structure of each product A is different due to inertia, the inventor designed a locking component 100, which cooperates with the thread column B to achieve positioning locking, so as to stop the thread column B from rotating, and effectively solves the technical problem that after the driving part 210 for driving the thread processing stops, the thread column B continues to rotate due to inertia, resulting in different structures of the product thread A2, especially when there are labels on the products, the pointing positions of the product labels are different, which reduces the requirements for product consistency.

[0052] The inventor has developed a locking assembly 100 through unremitting efforts and research in the field of technology. Figure 1As shown, the locking assembly 100 includes a locking member 130 and a locking ring 140. The locking ring 140 is fixed on the threaded column B, and the locking member 130 is arranged beside the locking ring 140. The locking ring 140 is provided with a locking groove 142, and the locking direction of the locking groove 142 is opposite to the processing rotation direction of the threaded column B. The locking ring 140 is driven by the threaded column B to rotate synchronously to process the screw thread; when the threaded column B and the locking ring 140 are controlled to reverse synchronously, the locking groove 142 is reversed with the locking ring 140 to engage and position with the locking member 130, so as to achieve the consistency of the product screw thread A2 structure of each product A.

[0053] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the stopper 130 is rotatably installed, and one end of the stopper 130 overlaps the outer side surface of the stop ring 140, and rotates synchronously and reverses synchronously with the stop ring 140. When one end of the stopper 130 is inserted into the slot 142, the stopper 130 cooperates with the slot 142 to position and stop the thread column B, thereby achieving the positioning and rotation stop of the thread column B. Under the same standard and / or conditions, the thread column B is driven to reverse, and the reversed thread column B drives the stop ring 140, and the reversed clamping ring drives the slot 142 to engage with the stopper 130, and the stopper 130 is inserted into the slot 142 at a fixed position, thereby achieving the positioning and locking of the stopper ring 140, thereby positioning and stopping the thread column B, thereby solving the technical problem that the thread column B continues to rotate due to inertia after the driving member 210 for driving the thread processing stops, resulting in different standards of the product thread A2.

[0054] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the relevant structural details of the above-mentioned locking assembly 100 are as follows:

[0055] The retaining ring 140 is in the shape of a ring, and a retaining ring middle hole 141 is opened in the center thereof. The retaining ring 140 is inserted into the threaded rod B by means of the retaining ring middle hole 141. Specifically, the retaining middle hole is a through hole that penetrates the retaining ring 140, and the retaining middle hole must be able to engage with the threaded rod B to realize the linkage between the retaining ring 140 and the threaded rod B, that is, to realize the synchronous rotation and synchronous braking of the retaining ring 140 and the threaded rod B; in this embodiment, the retaining ring middle hole 141 is a circular hole with two tangential limiting side surfaces (see Figure 2 and Figure 4), the shape and size of the threaded tooth column B are adapted to the hole 141 in the retaining ring, so that the retaining ring 140 can be connected and synchronously linked with the threaded tooth column B through the hole 141 in the retaining ring, so as to realize synchronous rotation molding or synchronous rotation stopping positioning. In addition, because the retaining ring 140 is a circular ring as a whole, its outer side surface is an annular side wall. The outer side surface of the retaining ring 140 is. Furthermore, the groove 142 of the retaining ring 140 is a gap formed by two vertically connected cut surfaces; specifically: the two vertically connected cut surfaces are respectively the first cut surface and the second cut surface, and the first cut surface is vertically connected to the second cut surface at the outer edge of the retaining ring 140 to form a gap with an L-shaped radial cross section, which is the groove 142, used to stop the rotation of the retaining member 130; the first cut surface is the same as the rotation direction of the retaining ring 140, and the second cut surface is perpendicular to the first cut surface.

[0056] It should be noted that the engaging direction of the engaging groove 142 is opposite to the direction of the threaded rod B during the rotational thread processing. In other words: when the threaded column B is driven to rotate and process the thread, the retaining ring 140 is also driven synchronously. At this time, because the locking direction of the slot 142 is consistent with the rotation direction of the retaining ring 140 for thread processing, the design of the slot 142 will not affect the thread processing. However, when the controlled threaded column B is driven to reverse, the retaining ring 140 is synchronously driven to reverse (the reversal described in this article is a rotation opposite to the thread processing direction, that is: when the thread is processed, the retaining ring rotates clockwise, and when the reversal occurs, the retaining ring 140 rotates counterclockwise). At this time, the reversed retaining ring 140 is introduced into the retaining member 130, and the retaining member 130 is abutted against the slot 142 to position and stop the threaded column B. During the injection molding process, each product A only needs to control the reversal of the threaded column B under the same standard or / and conditions, so that the threaded column B can be positioned and stopped through the cooperation of the retaining ring 140 and the retaining member 130, thereby ensuring the consistency of the thread A2 structure of each product A.

[0057] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the stopper 130 has a stopper end, which overlaps with the stopper ring 140 and can be introduced into the slot 142 as it is rotated and formed, and then inserted into the slot 142 to abut against the side of the slot 142 to stop the stopper ring 140. Specifically, the stopper 130 has the hinge end and the stopper end, and a hinge hole is provided at the hinge end of the stopper 130, and a hinge shaft is inserted into the hinge hole, so that the stopper 130 can rotate with the hinge shaft as the rotation axis. It should be noted that: there is relative movement between the locking member 130 and the locking ring 140, that is, the locking ring 140 rotates relative to the locking member 130, the locking end of the locking member 130 overlaps the outer side surface of the locking ring 140, the locking end of the locking member 130 is introduced into the groove 142 of the reversed locking ring 140, the rotating locking ring 140 is introduced into the locking member 130, and the groove 142 is abutted against the locking end, so as to stop the rotation of the locking ring 140, and the purpose of locking the thread column B is to achieve the consistency of the thread of product A.

[0058] In this embodiment, the retaining member 130 is similar to the handle shape of a fruit knife used in daily life. In detail: the retaining member 130 has a concave arc surface on one side facing the retaining ring 140, and the curvature of the arc surface is adapted to the curvature of the outer side surface of the retaining ring 140 to avoid affecting the rotational movement of the retaining ring 140. The hinged end of the retaining member 130 is an arc end, that is: the outer side surface of the hinged end of the retaining end is an arc surface, and is connected to the arc end of the retaining member 130; the retaining end of the retaining member 130 has two mutually perpendicularly connected pressing surfaces, namely a first pressing surface and a second pressing surface, and the second pressing surface is against the second cut surface to stop the retaining ring 140 from rotating, thereby achieving the purpose of positioning and retaining, and achieving the goal of thread consistency of product A.

[0059] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the locking assembly 100 further includes a spring 120 and a stopper 110, wherein the stopper 110 is located beside the stopper and away from the stopper ring 140, and the stopper 110 is connected to the stopper 130 through the spring 120. Specifically, the stopper 110 is fixedly installed, and an embedded hole is provided on a side facing the stopper 130 to fix the spring 120; and the stopper 130 also has an embedded hole on a side facing the stopper 110 to fix the spring 120. The two ends of the spring 120 are respectively embedded in the two embedded holes of the stopper 110 and the stopper 130, so that the stopper 130 can have elastic reset ability relative to the stopper 110, so that the locking end of the stopper 130 can be driven to be closely attached to the outer side of the stopper ring 140, but the rotation of the stopper ring 140 is not affected.

[0060] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the threaded rod B is driven by the driving assembly 200 to rotate, realize rotational processing and forming, and obtain the product thread A2. Specifically: the driving assembly 200 includes a driving member 210, a transmission member and a driving tooth 250, and the transmission member includes a first transmission tooth 220, a transmission shaft 230 and a second transmission tooth 240. The first and second transmission teeth 240 are respectively fixed at both ends of the transmission shaft 230. The driving member 210 is connected to the first transmission tooth 220 and synchronously linked. The first transmission tooth 220 drives the second transmission tooth 240 through the transmission shaft 230. The second transmission tooth 240 is meshed with the driving tooth 250, thereby driving the driving tooth 250 to rotate. The driving tooth 250 is meshed with the driven tooth 150 on the threaded rod B to drive the threaded rod B to rotate and realize thread processing and forming.

[0061] like Figure 5 , Figure 6 and Figure 7 As shown, a locking mechanism includes a locking assembly 100 and a driving assembly 200, and at least two of the locking assemblies 100 are connected to the same driving assembly 200 and driven by the same driving assembly 200 to perform linkage.

[0062] like Figure 5 , Figure 6 and Figure 7As shown, the number of the driving teeth 250 in the driving component 200 is at most two, and the two driving teeth 250 are connected to different locking components 100. In this embodiment, eight locking components 100 are arranged in the locking mechanism, and each of the eight locking components 100 is divided into a group of four, and a group of locking components 100 is connected and linked to the same driving tooth 250. Specifically: the driving component 200 in this embodiment includes a driving member 210, a transmission member and two driving teeth 250, and the two driving teeth 250 are symmetrically distributed on both sides of the transmission member, and the two driving teeth 250 are driven by the same transmission member and rotate synchronously. According to the above structural design, the working principle of the driving component 200 in this embodiment is: the driving member 210 is an active member (see Figure 8 ), which can be a stepping motor or other component that can realize active power output; the driving member 210 drives the transmission member to rotate, and the transmission member utilizes the meshing of the second transmission tooth 240 and the driving tooth 250 to realize the linkage of the driving tooth 250. It should be noted that: the two driving teeth 250 are driven to rotate synchronously.

[0063] According to the above structural design, Figure 5 , Figure 6 and Figure 7 As shown, each group of the locking components 100 is composed of four locking components 100, and the four locking components 100 are arranged in a matrix distribution and are arranged around the same driving tooth 250. Each of the locking rings 140 in the four locking components 100 is mounted on the threaded rod B, and the threaded rod B is equipped with a driven tooth 150. The driven teeth 150 on the four threaded rods B are connected to the same driving tooth 250, and the same driving tooth 250 drives the four threaded rods B to rotate synchronously, and the four threaded rods B are synchronously rotated to form. In this embodiment, the two driving teeth 250 rotate synchronously, and the four driving teeth 250 drive the eight driven teeth 150 to rotate respectively, and the eight driven teeth 150 drive the eight threaded rods B to rotate synchronously. When the eight threaded rods B rotate synchronously, the locking rings 140 in the eight locking components 100 are driven to rotate. It should be noted that: each of the threaded rods B corresponds to an injection molding station of product A, that is, it corresponds to a product A. The product A is mounted on the threaded rod B and the product thread A2 is processed. Based on this, eight threaded rods B correspond to eight products A. One driving component 200 drives eight locking components 100 to achieve consistent processing of the product thread A2 in the eight products A, thereby achieving consistency in the production of batch products A.

[0064] In this embodiment, if Figure 5 , Figure 6 and Figure 7 As shown, each group of the locking components 100 is arranged in two rows and two columns. Figure 8 As shown, the four locking components 100 are symmetrically distributed along the X-axis direction, so as to be reasonably distributed in the same mold frame, so as to achieve the purpose of synchronous processing and forming of batch products A under the premise of achieving the consistency of product A.

[0065] like Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, an injection mold is used to process Fig.10 The product A shown is tubular and has a through hole. One end edge of the product A is bent toward its central axis, while the other end does not have the above-mentioned bend. A screw thread is provided on the inner side wall of the other end of the product A. In order to process the screw thread, a screw thread forming column B needs to be provided in the injection mold.

[0066] like Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the injection mold includes a mold frame, a mold core and a threaded rod B, and the mold core and the threaded rod B are both installed in the mold frame. Specifically: the mold frame includes a static mold group and a dynamic mold group, and the static mold group includes a static mold top plate 310 and a static mold plate 330 arranged in sequence, and the static mold plate 330 has a groove on one side facing the dynamic mold group. The movable mold assembly includes a movable mold bottom plate 450, a square iron 440, a movable mold fixing plate 430, a movable mold pad 420 and a movable mold plate 410. The two square irons 440 are fixed to the movable mold bottom plate 450 and are symmetrically distributed. An ejection cavity is formed between the two square irons 440. An ejection plate is arranged in the ejection cavity, and an ejector pin is installed on the ejection plate. The movable mold fixing plate 430 is fixedly connected to the two square irons 440, the movable mold pad 420 is fixedly connected to the movable mold fixing plate 430, the movable mold plate 410 is fixedly connected to the movable mold pad 420, and the movable mold plate 410 has a groove toward the static mold assembly. A molding cavity is arranged in the mold core. The mold core includes a movable mold core 520 and a static mold core 510. The static mold core 510 is fixed in the groove of the static mold plate 330, and the movable mold core 520 is fixed in the groove of the movable mold plate 410. The twisting tooth column B is installed in the movable mold group along the mold opening direction. The twisting tooth column B has a product A molding section. The product A molding section extends into the mold core and cooperates with the molding cavity to enclose a cavity suitable for injection molding of product A.

[0067] It should be noted that the ejector plate and the ejector are driven to eject the solidified material head in the material flow channel and demold it, which can be used to make effective preparations for the next injection molding process.

[0068] like Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the injection mold is also provided with a locking mechanism, and the driving assembly 200 in the locking mechanism is connected to the threaded rod B and drives the threaded rod B to rotate, so as to drive the threaded rod B to rotate in the movable mold assembly, thereby realizing the processing and forming of the product thread A2 and cooperating with the product A to be ejected, and realizing the processing and forming of the product thread A2. It should be noted that: the threaded rod B is fixed with a driven tooth 150, and the driven tooth 150 is arranged closer to the ejection plate than the product A molding section. The driving assembly 200 includes a driving member 210, a transmission member and a driving tooth 250. The driving member 210 is fixed on a driving frame, and the driving frame is fixed on the outer side of the mold frame. The transmission member is installed in the movable mold, connected to the driving member 210 through a linkage member, and driven by the driving member 210 to rotate. The transmission member is connected and linked to the driving tooth 250 through a second transmission tooth 240 installed thereon. The driving tooth 250 is meshed with the driven tooth 150, thereby driving the threaded column B to rotate and form, thereby realizing the rotational processing and forming of the product thread A2 on the inner side of the product A.

[0069] like Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the injection mold described in this embodiment is a multi-station mold, that is, the injection mold can simultaneously produce eight products A after one injection molding. The mold core is provided with eight Figure 8 In the molding cavities distributed as shown, each molding cavity is provided with a corresponding screw thread column B, and a driven tooth 150 is fixed on each screw thread column B. Moreover, a locking assembly 100 is assembled on each screw thread column B, and a locking ring 140 in the locking assembly 100 is fixed on the screw thread column B. The locking ring 140 is located between the driven tooth 150 and the molding section of the product A, and is arranged close to the driven tooth 150. The locking member 130 in the locking assembly 100 is fixed to the movable mold backing plate 420 through a hinge shaft, and the stopper 110 is fixed to the movable mold backing plate 420.

[0070] like Figure 8 As shown, the injection mold described in this embodiment is preferably a hot runner mold. In order to adapt to the characteristics of the hot runner mold, a hot runner mold plate 320 is added to the static mold group. The hot runner mold is located between the static mold top plate 310 and the static mold plate 330, and is not connected to the static mold top plate 310 and the static mold plate 330.

[0071] like Figures 5 to 10 As shown, the processing process of the product A of the above-mentioned injection mold is as follows:

[0072] Step 1: mold closing and injection molding;

[0073] The injection machine injects the slurry into the static mold group of the injection mold. The slurry is heated by the hot runner template 320 to increase fluidity and introduced into the molding cavity of the mold core. The glue is cooled and molded in the molding cavity to complete the one-time molding process of product A. During the one-time molding process, the injection molded product A is tubular, and one end of it is bent toward its central axis. It should be noted that: at this time, the product thread A2 has not been molded.

[0074] Step 2: Open the mold once:

[0075] The movable mold assembly and the static mold plate 330 move in a direction away from the hot runner mold plate 320 to complete a mold opening.

[0076] Step 3: Secondary mold opening:

[0077] The movable mold group continues to move, moving away from the static mold plate 330, completing the secondary mold opening. It should be noted that the static mold plate 330 is restricted from moving after completing the primary mold opening, while the movable mold group continues to perform the mold opening movement, completing the secondary mold opening. When the secondary mold opening is completed, product A has been exposed to the outside, and the distance between the static mold plate 330 and the movable mold plate 410 is sufficient for product A to escape.

[0078] Step 3: Demolding of product A;

[0079] The driving member 210 in the driving mechanism drives the threaded rod B to rotate through the transmission member, the driving tooth 250, and the driven tooth 150, and drives the threaded rod B to rotate. At this time, the locking ring 140 rotates synchronously with the threaded rod B, and the threaded rod and the locking ring 140 are controlled to reverse synchronously. The reversed locking ring 140 cooperates with the locking member 130 to stop the threaded rod B, so as to achieve the purpose of positioning and stopping the threaded rod B (that is, the threaded rod B is positioned and stopped), ensuring that the product thread A2 of the product A remains consistent, and finally, the product A with a consistent product thread A2 is obtained. .

[0080] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A locking assembly, characterized in that: It includes a retaining ring and a retaining piece, wherein: A retaining ring is connected to the threaded rod and rotates synchronously. The retaining ring is provided with a retaining groove, and the retaining groove has a retaining direction opposite to the rotation direction of the threaded rod during machining. A locking piece, which is located beside the locking ring and overlaps the locking ring; The locking ring driven by the twisting tooth column is synchronously reversed to guide the locking piece into the locking groove, and the locking piece is engaged with the locking groove to stop the twisting tooth column from rotating, thereby achieving positioning locking.

2. The locking assembly according to claim 1, characterized in that: One end of the locking piece is hingedly installed, and the other end is overlapped with the locking ring.

3. The locking assembly according to claim 1, characterized in that: It also includes a stopper, which is fixedly installed and connected to the locking piece through a spring.

4. The locking mechanism is characterized by: The invention comprises a driving assembly and at least two locking assemblies according to any one of claims 1 to 3, wherein: The locking ring and the driven gear of the locking assembly are both connected to the threaded tooth column; The driving teeth in the driving assembly are meshed and transmitted with the driven teeth of the threaded rod to drive the threaded rod and the retaining ring to rotate synchronously.

5. The locking mechanism according to claim 4, characterized in that: The driving assembly comprises a driving member, a transmission member and the driving teeth which are linked in sequence.

6. The locking mechanism according to claim 5, characterized in that: The eight locking components are divided into two groups, and each group of locking components is linked with the driving component through the same driving tooth; The two driving teeth are driven by the same transmission member.

7. The locking mechanism according to claim 6, characterized in that: The eight locking components are arranged in a matrix.

8. Injection mold, characterized in that: It comprises a mold frame, a mold core, a threaded rod and a locking mechanism according to any one of claims 4 to 7, wherein: The mold core has a molding cavity and is installed in the mold frame; The threaded rod is installed in the movable die set of the die frame and extends into the molding cavity; The locking mechanism is installed in cooperation with the movable die set of the die frame; After the mold core is opened along with the mold frame, the driving assembly of the locking mechanism drives the threaded rod to rotate to eject the product; The locking assembly of the locking mechanism stops the rotation of the threaded rod to position and lock it.

9. The injection mold according to claim 8, characterized in that: The mold frame includes a static mold group and a dynamic mold group, wherein: The static mold assembly comprises a static mold top plate, a hot runner mold plate and a static mold plate which are arranged in sequence, and the static mold top plate is fixedly connected to the hot runner mold plate; The movable die set and the static die set move synchronously in a direction away from the static die set to perform a mold opening movement; The movable die set is separated from the static die plate and performs a secondary mold opening movement to drive the mold core to open the mold; The driving assembly drives the locking assembly to rotate so as to eject the product.

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