Holding structure and thread mold

Abstract

The utility model discloses a kind of hug structure and thread mould, it is related to thread mould technical field, wherein, hug structure includes support plate and hug component, the inside of support plate is along first direction and is penetrated and is opened with one mounting hole, mounting hole is used to supply sleeve body to be housed;Hug component is set in mounting hole, including at least one hug unit, hug unit includes opposite free end and fixed end and is set between free end and fixed end hug section, fixed end is fixedly set on support plate, free end is used to extend to between sleeve body and support plate, and free end can be elastically active relative to support plate, so that at least part of hug section is abutted on the outer circumferential side of sleeve body, sleeve body is fixed in mounting hole.The technical scheme provided by the utility model aims at improving the constraint stability to sleeve body, reduce the influence of processing error to positioning accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of thread molds, and in particular to a clamping structure and a thread mold. Background Technology

[0002] In injection molding, the conventional design for unscrewing molds uses a hydraulic cylinder or rack and pinion to rotate the threaded core. The threaded core, constrained by a sleeve, rotates backward and ejects from the product. If the sleeve constraining the threaded core rotates, it will affect the normal ejection of the product, causing the threads to be compressed and damaging the inner threads. Generally, a locating block is used to constrain the sleeve's rotation and fix it in place; however, machining errors can affect the positional accuracy of the locating block, thus affecting the effective constraint. Utility Model Content

[0003] The main purpose of this invention is to propose a clamping structure and a threaded mold, which aims to improve the constraint stability of the sleeve and reduce the impact of machining errors on positioning accuracy.

[0004] To achieve the above objectives, this utility model proposes a clamping structure for use in thread dies, comprising:

[0005] A support plate having a mounting hole extending through its interior along a first direction, the mounting hole being for accommodating the sleeve; and,

[0006] A clamping assembly, disposed within the mounting hole, includes at least one clamping unit. The clamping unit includes a free end and a fixed end opposite to each other, and a clamping section disposed between the free end and the fixed end. The fixed end is fixedly disposed on the support plate. The free end extends to the space between the sleeve and the support plate, and the free end is elastically movable relative to the support plate, so that at least a portion of the clamping section abuts against the outer periphery of the sleeve, thereby fixing the sleeve within the mounting hole.

[0007] In one embodiment, two clamping units are provided, and the two clamping units are disposed opposite to each other in the mounting hole in a second direction.

[0008] In one embodiment, a fixed cavity is defined between the two clamping sections for accommodating the sleeve body.

[0009] In one embodiment, two mounting holes are provided, and the two mounting holes are arranged opposite each other in a third direction;

[0010] Correspondingly, two clamping components are also provided.

[0011] In one embodiment, the free end is provided with a fixing hole along the second direction, and the support plate is provided with a through hole corresponding to the fixing hole;

[0012] The clamping assembly also includes fasteners that pass through the fixing hole and the through hole.

[0013] In one embodiment, the two mounting holes are symmetrically arranged in the third direction, wherein the fixing holes in the two clamping components are arranged adjacent to each other;

[0014] The fastener includes a U-shaped locking pin, which is locked into the two fixing holes and fixed to the support plate.

[0015] In one embodiment, the support plate is integrally formed with the clamping assembly.

[0016] In one embodiment, the inner side of the clamping section is configured to fit against the outer side of the sleeve.

[0017] In one embodiment, the clamping section is arranged in a ring shape.

[0018] This utility model also proposes a threaded die, including the clamping structure, the clamping structure comprising:

[0019] A support plate having a mounting hole extending through its interior along a first direction, the mounting hole being for accommodating the sleeve; and,

[0020] A clamping assembly, disposed within the mounting hole, includes at least one clamping unit. The clamping unit includes a free end and a fixed end opposite to each other, and a clamping section disposed between the free end and the fixed end. The fixed end is fixedly disposed on the support plate. The free end extends to the space between the sleeve and the support plate, and the free end is elastically movable relative to the support plate, so that at least a portion of the clamping section abuts against the outer periphery of the sleeve, thereby fixing the sleeve within the mounting hole.

[0021] In the technical solution of this utility model, by placing the sleeve body into the mounting hole, the free end elastically moves towards the sleeve body, allowing the clamping end to move closer to the sleeve body. As the free end continuously moves, the clamping section presses against the outer side of the sleeve body, fixing the sleeve body within the mounting hole. This reduces the possibility of rotation of the sleeve body within the mounting hole, allowing the threaded core to disengage smoothly. Because the clamping section fits tightly against the sleeve body, and the pressure applied to the sleeve body by the clamping section can be adjusted by the position of the free end, it can adapt to different sleeve body sizes, improve constraint stability, and reduce the impact of machining errors on positioning accuracy. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram of an embodiment of the clamping structure provided by this utility model;

[0024] Figure 2 for Figure 1 Side view of the central clamping structure;

[0025] Figure 3 for Figure 1 A cross-sectional view of the clamping structure;

[0026] Figure 4 A schematic diagram of an embodiment of the thread mold provided by this utility model.

[0027] Explanation of icon numbers:

[0028] 100. Clamping structure; 200. Sleeve body; 300. Threaded die;

[0029] 1. Support plate; 11. Mounting hole; 12. Fixing cavity; 13. Through hole;

[0030] 2. Clamping assembly; 21. Clamping unit; 211. Free end; 212. Fixed end; 213. Clamping section; 214. Fixing hole.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] In injection molding, the conventional design for unscrewing molds uses a hydraulic cylinder or rack and pinion to rotate the threaded core. The threaded core, constrained by a sleeve, rotates backward and ejects from the product. If the sleeve constraining the threaded core rotates, it will affect the normal ejection of the product, causing the threads to be compressed and damaging the inner threads. Generally, a locating block is used to constrain the sleeve's rotation and fix it in place; however, machining errors can affect the positional accuracy of the locating block, thus affecting the effective constraint.

[0036] To solve the above technical problems, such as Figures 1 to 3 As shown, the present invention proposes a clamping structure 100 for use in a threaded die 300, including a support plate 1 and a clamping assembly 2. The support plate 1 has a mounting hole 11 extending through it along a first direction, which is used to accommodate a sleeve 200. The clamping assembly 2 is disposed in the mounting hole 11 and includes at least one clamping unit 21. The clamping unit 21 includes a free end 211 and a fixed end 212 opposite to each other, and a clamping section 213 disposed between the free end 211 and the fixed end 212. The fixed end 212 is fixedly disposed on the support plate 1. The free end 211 is used to extend between the sleeve 200 and the support plate 1, and the free end 211 can elastically move relative to the support plate 1, so that at least a portion of the clamping section 213 abuts against the outer peripheral side of the sleeve 200, thereby fixing the sleeve 200 in the mounting hole 11.

[0037] In the technical solution of this utility model, by placing the sleeve 200 inside the mounting hole 11, the free end 211 elastically moves towards the sleeve 200, allowing the clamping end to move closer to the sleeve 200. As the free end 211 moves continuously, the clamping section 213 presses against the outside of the sleeve 200, fixing the sleeve 200 within the mounting hole 11. This reduces the possibility of rotation of the sleeve 200 within the mounting hole 11, allowing the threaded core to disengage smoothly. Because the clamping section 213 fits tightly against the sleeve 200, and the pressure applied to the sleeve 200 by the clamping section 213 can be adjusted by the position of the free end 211, it can adapt to different sleeve 200 sizes, improving constraint stability and reducing the impact of machining errors on positioning accuracy.

[0038] It is understood that the mounting hole 11 described in this application is used to accommodate the sleeve 200. Therefore, the shape and size of the mounting hole 11 can be customized according to the specific structure of the sleeve 200, and are not specifically limited here. The mounting hole 11 being opened in the first direction means that it extends along the thickness direction of the support plate 1, so that the sleeve 200 can enter the mounting hole 11 in the first direction, thereby allowing the threaded core to move in the first direction and disengage from the product under the constraint of the sleeve 200. The free end 211 mentioned in this application can move elastically relative to the support plate 1, meaning that when the free end 211 is subjected to external force, it can move within the mounting hole 11, thereby driving the clamping section 213 to move, so that the free end 211 and the clamping section 213 rotate around the fixed end 212 as the rotation point. During this process, a certain amount of micro-elastic deformation can be generated at various parts of the entire clamping unit 21, so that the clamping section 213 can fit tightly against the outer surface of the sleeve 200, thereby fixing the sleeve 200 in the mounting hole 11.

[0039] It is understood that the clamping unit 21 can be configured as one or more, selected according to actual needs. For example, when configured as one, it can provide a certain degree of basic fixing function for the sleeve 200, but its constraint stability may be relatively weak. When faced with a larger or more complex sleeve 200, it is difficult to ensure that the sleeve 200 is firmly fixed in the mounting hole 11. When configured as multiple, the multiple clamping units 21 can apply clamping force to the sleeve 200 from different angles, with a more uniform distribution, enhancing the constraint stability of the sleeve 200. Even when faced with sleeves 200 of various specifications and shapes, it can improve the fixing effect of the sleeve 200 in the mounting hole 11, thereby more effectively ensuring the smooth release of the threaded core. Therefore, in one embodiment, two clamping units 21 are provided, and the two clamping units 21 are arranged opposite to each other in the mounting hole 11 in the second direction. With this configuration, the two clamping units 21 are symmetrically distributed on both sides of the mounting hole 11, enabling them to clamp and fix the sleeve 200 from both sides in the second direction. This makes the sleeve 200 more stable within the mounting hole 11, reducing the possibility of tilting or swaying due to unilateral force on the sleeve 200. It should be noted that the second direction in this application is the same as the width direction of the support plate 1. Further, in one embodiment, a fixing cavity 12 is defined between the two clamping sections 213, which is used to accommodate the sleeve 200. This configuration allows the fixing cavity 12 to more accurately enter the predetermined position during installation, reducing errors caused by inaccurate installation position of the sleeve 200, improving the positioning accuracy of the sleeve 200, and enabling the threaded core to smoothly detach from the product. Furthermore, the shape and size of the fixing cavity 12 can be designed and adjusted according to the specific structure of the sleeve 200 to better adapt to different types and sizes of sleeves 200, improving the versatility of the clamping structure 100.

[0040] It is understood that the support plate 1 may be provided with multiple mounting holes 11 to accommodate the needs of sleeves 200 of different specifications, and each mounting hole 11 may be equipped with a corresponding clamping unit 21. Specifically, in one embodiment, two mounting holes 11 are provided, and the two mounting holes 11 are arranged opposite each other in a third direction; correspondingly, two clamping components 2 are also provided. With this arrangement, sleeves 200 of different specifications can be independently and precisely fixed through the two mounting holes 11 and the corresponding clamping components 2, which meets diverse production needs and improves the versatility of the mold, or sleeves 200 of the same specifications can be fixed, thereby achieving mass production and improving production efficiency. In addition, the third direction mentioned in this application is consistent with the length direction of the support plate 1, so that the arrangement of the mounting holes 11 is more reasonable and convenient for installation and adjustment.

[0041] It is understood that the free end 211 can move elastically within the mounting hole 11 in various ways. For example, an elastic element, such as a spring, can be provided on the free end 211, with one end fixed to the free end 211 and the other end connected to the inner wall of the mounting hole 11 or other fixed components. The elastic expansion and contraction of the spring allows the free end 211 to move elastically within the mounting hole 11. Alternatively, an elastic material can be used to make the clamping unit 21, so that the free end 211 itself has a certain elasticity and can undergo elastic deformation within the mounting hole 11, thereby achieving elastic movement. When the second method is used, the free end 211 needs to be fixed to prevent it from resetting under its own elastic force, thus failing to effectively constrain the sleeve 200. Therefore, in one embodiment, the free end 211 is provided with a fixing hole 214 along the second direction, and the support plate 1 is provided with a through hole 13 corresponding to the fixing hole 214; the clamping component 2 also includes a fastener, which passes through the fixing hole 214 and the through hole 13. This configuration, with the fasteners passing through the fixing hole 214 and the through hole 13, stably connects the free end 211 to the support plate 1, forming an integral structure and improving the reliability of the clamping structure 100. Furthermore, the precise alignment of the fixing hole 214 and the through hole 13, along with the tightening effect of the fasteners, reduces the possibility of loosening or misalignment of the free end 211 during use, ensuring that the relative positional relationship between the free end 211 and the support plate 1 remains consistent. The fasteners can be bolts, screws, or pins, ensuring a secure connection.

[0042] In one embodiment, the two mounting holes 11 are symmetrically arranged in a third direction, and the fixing holes 214 in the two clamping components 2 are arranged adjacent to each other. The fastener includes a U-shaped locking pin, which locks into the two fixing holes 214 and is fixed to the support plate 1. Thus, the adjacent arrangement of the fixing holes 214 in the two clamping components 2 facilitates accurate locking of the U-shaped locking pin within the two fixing holes 214, simplifying installation and disassembly, reducing fixing time, and improving production efficiency. Furthermore, the U-shaped locking pin, with its unique U-shaped structure, provides strong tensile force in both the lateral and longitudinal directions, effectively reducing the possibility of loosening, shifting, or falling off during operation within the fixing holes 214, thereby improving the reliability of the clamping structure 100.

[0043] It is understood that the support plate 1 and the clamping component 2 can be separately configured, but this would reduce the overall stability of the clamping structure 100. Therefore, in one embodiment, the support plate 1 and the clamping component 2 are integrally configured. This effectively improves the overall stability of the clamping structure 100. Because the support plate 1 and the clamping component 2 are integrally configured, the connection between the components is tighter, better able to withstand external forces and workloads, and avoids problems such as loosening of connections and gaps that may occur with separate configurations, making the clamping structure 100 more stable and reliable during operation.

[0044] It is understood that the inner surface of the clamping section 213 can partially contact the sleeve 200. However, partial contact can create localized stress concentration between the sleeve 200 and the clamping section 213, accelerating wear on both and reducing their service life. Therefore, in one embodiment, the inner surface of the clamping section 213 is designed to fit snugly against the outer surface of the sleeve 200. This allows for more uniform and comprehensive contact between the sleeve 200 and the clamping section 213. When the inner surface of the clamping section 213 fits snugly against the outer surface of the sleeve 200, the frictional force between them is evenly distributed, thereby reducing the problem of localized stress concentration. This helps reduce wear on the sleeve 200 and the clamping section 213, extending their service life. Furthermore, since the sleeve 200 is typically annular, in one embodiment, the clamping section 213 is annular. Thus, the ring-shaped clamping section 213 can fully wrap and clamp around the outer periphery of the sleeve 200, forming a continuous contact area with the outer surface of the sleeve 200. This allows the clamping force to be evenly distributed across the entire circumference of the sleeve 200, further reducing wear and improving the stability of the clamping structure 100.

[0045] like Figure 4 As shown, this utility model also proposes a thread mold 300, which includes a clamping structure 100. The specific structure of the clamping structure 100 is as described in the above embodiments. Since this thread mold 300 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0046] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A clamping structure for use in a threaded die, characterized in that, include: A support plate has a mounting hole extending through its interior along a first direction, the mounting hole being used to accommodate the sleeve body. as well as, A clamping assembly, disposed within the mounting hole, includes at least one clamping unit. The clamping unit includes a free end and a fixed end opposite to each other, and a clamping section disposed between the free end and the fixed end. The fixed end is fixedly disposed on the support plate. The free end extends to the space between the sleeve and the support plate, and the free end is elastically movable relative to the support plate, so that at least a portion of the clamping section abuts against the outer periphery of the sleeve, thereby fixing the sleeve within the mounting hole.

2. The clamping structure as described in claim 1, characterized in that, Two clamping units are provided, and the two clamping units are disposed opposite to each other in the mounting hole in the second direction.

3. The clamping structure as described in claim 2, characterized in that, A fixed cavity is defined between the two clamping sections, the fixed cavity being used to accommodate the sleeve body.

4. The clamping structure as described in claim 2, characterized in that, The mounting holes are provided in two places, and the two mounting holes are positioned opposite each other in the third direction. Correspondingly, two clamping components are also provided.

5. The clamping structure as described in any one of claims 1 to 4, characterized in that, The free end is provided with a fixing hole along the second direction, and the support plate is provided with a through hole corresponding to the fixing hole; The clamping assembly also includes fasteners that pass through the fixing hole and the through hole.

6. The clamping structure as described in claim 5, characterized in that, The two mounting holes are symmetrically arranged in the third direction, and the fixing holes in the two clamping components are arranged adjacent to each other; The fastener includes a U-shaped locking pin, which is locked into the two fixing holes and fixed to the support plate.

7. The clamping structure as described in claim 1, characterized in that, The support plate and the clamping component are integrally formed.

8. The clamping structure as described in claim 1, characterized in that, The inner side of the clamping section is designed to fit snugly against the outer side of the sleeve.

9. The clamping structure as described in claim 1 or 8, characterized in that, The clamping section is arranged in a ring shape.

10. A threaded die, characterized in that, Includes the clamping structure as described in any one of claims 1 to 9.

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