A cold setting mechanism for a damper

Abstract

The utility model discloses a cold setting mechanism of elastic wave, relate to loudspeaker accessory production equipment technical field, and this mechanism includes fixed frame, cooling spare, telescopic spare, moving part, upper mould disc, material conveying ring and lower mould disc, is equipped with the guide groove on material conveying ring, and upper mould disc side wall is equipped with positioning assembly, and positioning assembly contains fixed cylinder, and the inclined guide block of sliding fit in fixed cylinder and compression spring, and the end of inclined guide block is adapted to guide groove, and the inside of lower mould disc is equipped with holds up subassembly, and holds up subassembly contains rubber top tray, sliding roof and back spring, and rubber top tray is fixed in the top of sliding roof, and back spring abuts against sliding roof. The utility model discloses through the cooperation of positioning assembly and guide groove, utilizes the elastic retraction of inclined guide block to realize the automatic centering of mould closing, and through the automatic lifting of material of back spring's elasticity when opening mould through holds up subassembly, has realized the auxiliary stripping function, has solved the problem of poor precision and difficult material taking out after cold pressing in prior art.

Description

Technical Field

[0001] This utility model relates to the technical field of loudspeaker accessory manufacturing equipment, and in particular to a cold-setting mechanism for a spider. Background Technology

[0002] As a key vibrating component in a speaker module, the quality of the spider's molding directly affects the speaker's sound performance. In the spider manufacturing process, the material, after high-temperature hot pressing, often needs immediate cold pressing to eliminate internal stress and stabilize its shape. Existing cold-setting mechanisms typically use a cylinder-driven upper mold to directly press down, while a lower mold is used for cooling.

[0003] However, this traditional cold-setting equipment has significant drawbacks in actual production. First, due to the lack of a precise mold-closing and guiding mechanism, when the upper mold descends rapidly, equipment vibration or assembly errors can easily cause misalignment between the upper and lower molds, leading to pressing deviations or even mold damage. Second, during the low-temperature cold pressing process, the elastic material tends to adhere tightly to the metal surface of the lower mold due to resin cooling and solidification or the shrinkage effect. When the upper mold is lifted, the material cannot detach automatically, requiring operators to spend time manually prying it off. This not only severely reduces production efficiency but also makes it highly susceptible to deformation or breakage of the finished product due to improper force during material removal.

[0004] Therefore, this utility model proposes a cold setting mechanism for a spring wave to overcome the shortcomings of the prior art. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a cold setting mechanism for a spring, which aims to improve the existing technology where the lack of a high-precision automatic guiding mechanism during the mold closing process of the spring cold pressing equipment leads to pressing deviation, and the material easily adheres to the mold surface after cold pressing and setting, resulting in difficulty in demolding and material removal, low production efficiency, and easy damage to the finished product.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a cold setting mechanism for a spring wave, comprising a fixed frame, a cooling component, a telescopic component, a moving component, an upper mold plate, a conveying ring, a lower mold plate and a fixing ring, as well as a positioning component disposed on the upper mold plate and a lifting component disposed in the lower mold plate; The positioning component has an elastic telescopic structure including a fixed cylinder, an inclined guide block and a compression spring, and the lifting component has an elastic reset structure including a rubber top plate, a sliding top plate and a return spring. Furthermore, the positioning component and the guide groove on the conveying ring are combined through a sliding engagement with inclined planes to achieve guidance, and the lifting component is installed in the internal cavity of the lower mold plate to achieve material positioning and ejection through the extension and retraction of springs; Preferably, a conical pressure head is provided at the bottom center of the upper mold plate. The conical pressure head has a conical structure and its tip is oriented towards the lower mold plate, so as to diffuse the pressure from the center to the surrounding area during pressing. Preferably, the inclined guide block in the positioning assembly has a guide slope at one end extending from the fixed cylinder, the guide groove is opened radially along the conveying ring, and the inclined guide block forms a sliding extrusion fit with the groove opening of the guide groove through the guide slope, thereby driving the inclined guide block to retract when pressed down; Preferably, the surface of the rubber top plate in the supporting assembly has a high coefficient of friction texture, and in its natural state, the rubber top plate protrudes from the upper surface of the lower mold plate, for supporting and positioning the material before mold closing; Preferably, the lifting assembly further includes a sliding block disposed at the bottom of the sliding top plate, and a sliding groove adapted to the sliding block is provided in the lower mold plate. The sliding block slides and engages in the sliding groove in the vertical direction to restrict the sliding top plate from making linear reciprocating motion along the axial direction of the lower mold plate. Preferably, the return spring in the lifting assembly is disposed inside the bottom cylinder fixed to the bottom of the lower mold plate. One end of the return spring abuts against the inner bottom wall of the bottom cylinder, and the other end abuts against the center of the bottom surface of the sliding top plate. When the upper mold plate is pressed down, the sliding top plate partially slides into the bottom cylinder. Preferably, the retaining ring is sleeved on the outer periphery of the lower mold plate, the retaining ring and the lower mold plate are fixed by tolerance fit, and the lower mold plate is locked to the mounting surface on the top of the cooling component by bolt assembly; Preferably, the telescopic component is a pneumatic cylinder or a hydraulic cylinder, and the telescopic shaft of the telescopic component passes vertically downward through the top plate of the fixed frame and is fixedly connected to the moving component to provide pressing power; Preferably, the movable component has an inverted L-shaped structure, with its vertical side connected to the telescopic component and its horizontal side cantilevered to fix the upper mold plate for transmitting driving force.

[0007] This utility model has the following beneficial effects: 1. This utility model solves the problem of poor alignment accuracy of the upper and lower molds caused by the lack of an effective automatic guiding mechanism in the mold closing process of existing cold pressing equipment by setting a positioning component including an inclined guide block and a compression spring on the outer side wall of the upper mold plate, and cooperating with the guide groove opened on the material conveying ring. It achieves the technical effects of eliminating mechanical gaps by using elastic wedge clamping, realizing high-precision automatic alignment in the mold closing process, preventing pressing deviation and protecting the mold.

[0008] 2. This utility model solves the problem of material sticking to the surface of the lower mold plate after cold pressing due to low temperature shrinkage or material properties, which leads to difficulty in demolding and low material handling efficiency. It achieves the technical effects of automatic pressure relief when the mold is closed, automatic lifting of material by spring return force when the mold is opened to assist demolding, prevention of material sticking and improvement of production efficiency.

[0009] 3. This utility model solves the problem of uneven force on the elastic material and edge warping caused by the traditional planar pressing method by setting a conical pressure head at the bottom center of the upper mold plate. It achieves the technical effect of uniformly radiating and diffusing vertical pressure from the central hole to the surrounding area, and significantly improving the flatness and quality of the cold-set elastic material. Attached Figure Description

[0010] Figure 1 This is a perspective view of a cold-setting mechanism for a spring wave according to the present invention. Figure 2 This is a schematic diagram of the fixing ring structure of a cold setting mechanism for a spring wave proposed in this utility model; Figure 3 This is a schematic diagram of the compression spring structure of a cold-setting mechanism for a spring wave proposed in this utility model. Figure 4 This is a schematic diagram of the return spring structure of a cold-setting mechanism for a spring-loaded wave according to the present invention.

[0011] Legend: 1. Fixed frame; 2. Cooling component; 3. Telescopic component; 4. Moving component; 5. Upper mold plate; 6. Material conveying ring; 7. Lower mold plate; 8. Fixed ring; 9. Positioning assembly; 901. Angled guide block; 902. Fixed cylinder; 903. Guide groove; 904. Compression spring; 905. Conical pressure head; 10. Lifting assembly; 1001. Rubber top plate; 1002. Sliding top plate; 1003. Sliding block; 1004. Return spring; 1005. Bottom cylinder. Detailed Implementation

[0012] 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 protection scope of the present utility model.

[0013] Reference Figure 1 - Figure 4The present invention provides an embodiment of a cold setting mechanism for a spring wave, comprising a fixed frame 1 and a telescopic member 3 fixedly connected to the top of the fixed frame 1. The fixed frame 1 is generally L-shaped to provide a stable support platform. The telescopic member 3 serves as the main power driving source, with its output end vertically downward and driving a moving member 4. The moving member 4 is inverted L-shaped and its horizontal end cantilever is fixedly connected to an upper mold plate 5. The telescopic movement of the telescopic member 3 drives the moving member 4 and the upper mold plate 5 to rise and fall in the vertical direction, so as to cooperate with the mechanism below to complete the mold closing and mold opening actions. A cooling component 2 is installed on the bottom horizontal seat of the fixed frame 1. The cooling component 2 is used to provide a continuous low temperature environment to meet the requirements of the cold setting process. A lower mold plate 7 is fixedly installed on the top of the cooling component 2. In order to ensure the installation stability of the lower mold plate 7, a fixing ring 8 is fitted around the outer periphery of the lower mold plate 7. The fixing ring 8 is fastened to the mounting surface on the top of the cooling component 2 by bolt assembly, thereby firmly locking the lower mold plate 7. A conveying ring 6 for conveying the material to be processed is set between the upper mold plate 5 and the lower mold plate 7. The conveying ring 6 can accurately convey the hot-pressed bouncy material to the top of the lower mold plate 7 under the drive of the external conveying mechanism. like Figure 3 As shown, to ensure precise alignment between the upper mold plate 5 and the conveying ring 6 and lower mold plate 7 when the upper mold plate 5 is pressed down, multiple sets of positioning components 9 are arranged circumferentially on the outer side wall of the upper mold plate 5. Meanwhile, the top surface of the conveying ring 6 has guide grooves 903 corresponding one-to-one with the positions of the positioning components 9. Each positioning component 9 includes a fixed cylinder 902, an inclined guide block 901, and a compression spring 904. The fixed cylinder 902 is fixed to the side wall of the upper mold plate 5 by screws or welding. A receiving cavity is formed inside the fixed cylinder 902. The inclined guide block 901 slides within the receiving cavity of the fixed cylinder 902. One end of the 01 facing the inside of the fixed cylinder 902 is abutted against the inner wall of the fixed cylinder 902 by a compression spring 904. The compression spring 904 always applies an outward pushing force to the inclined guide block 901, so that the other end of the inclined guide block 901 extends out of the fixed cylinder 902 in its natural state and is adapted to the guide groove 903. The extended end of the inclined guide block 901 is provided with a guide slope. The guide groove 903 is opened along the radial direction of the conveying ring 6 and its cross-sectional shape matches the shape of the end of the inclined guide block 901. It is used to achieve elastic guidance and gapless positioning by the inclined surface extrusion during the mold closing process. The lower mold plate 7 has a central mounting cavity, in which a lifting assembly 10 is installed. The lifting assembly 10 is used to automatically lift the material after cold pressing to assist in demolding. The lifting assembly 10 mainly consists of a rubber top plate 1001, a sliding top plate 1002, a sliding block 1003, a return spring 1004, and a bottom cylinder 1005. The bottom cylinder 1005 is fixedly installed at the bottom center of the lower mold plate 7. The return spring 1004 is vertically placed inside the bottom cylinder 1005. The sliding top plate 1002 is located above the return spring 1004 and slides in cooperation with the inner wall of the lower mold plate 7. The top of the return spring 1004 abuts against the center of the bottom surface of the sliding top plate 1002. The rubber top plate 1001 is fixedly connected to the top surface of the sliding top plate 1002, and the surface of the rubber top plate 1001 is designed with a high friction coefficient texture to provide sufficient static friction to prevent material displacement when in contact with the material. To ensure the stability of the lifting assembly 10 during the lifting process, a number of sliding blocks 1003 are symmetrically fixedly connected to the bottom of the sliding top plate 1002. The corresponding lower mold plate 7 has a sliding groove for the sliding blocks 1003 to slide in the vertical direction. The sliding blocks 1003 and the sliding groove restrict the sliding top plate 1002 to only make linear reciprocating motion along the axial direction of the lower mold plate 7, preventing it from rotating circumferentially. In addition, a conical pressure head 905 is fixedly connected to the bottom center of the upper mold plate 5. The conical pressure head 905 has a conical structure with the tip pointing downwards. It is used to apply uniform diffusion pressure from the center of the material to the surrounding area during pressing to prevent the edge of the spring wave from lifting. The positioning component 9 has an elastic telescopic structure including a fixed cylinder 902, an inclined guide block 901, and a compression spring 904. The fixed cylinder 902 is horizontally fixed to the circumferential side wall of the upper mold plate 5 by screws or welding. Its function is to provide installation space and guiding reference for the internal components. The fixed cylinder 902 has a rectangular cavity inside. The compression spring 904 is installed laterally in the cavity. One end of the compression spring 904 abuts against the inner closed end of the fixed cylinder 902, and the other end abuts against the end face of the inclined guide block 901 located inside the fixed cylinder 902. The inclined guide block 901 is slidably fitted in the cavity of the fixed cylinder 902, and under the elastic drive of the compression spring 904, the head of the inclined guide block 901 always remains in a state of extending outward from the fixed cylinder 902. The inclined guide block 901 has a smoothly transitioned guide slope at its extended end. This guide slope has a wedge-shaped structure, which is used to convert the vertical downward pressure into a horizontal component force at the moment of contact, thereby driving the inclined guide block 901 to retract. At the same time, a guide groove 903 is correspondingly opened on the top surface of the conveying ring 6. The guide groove 903 extends radially along the conveying ring 6, and the groove width, depth and side wall slope of the guide groove 903 are precisely matched with the end shape of the inclined guide block 901. In the assembly working state, when the upper mold plate 5 descends, the guide slope of the inclined guide block 901 first slides into the guide groove 903 of the conveying ring 6. As the upper mold plate 5 continues to descend, the side wall of the guide groove 903 squeezes the inclined guide block 901, forcing the inclined guide block 901 to overcome the resistance of the compression spring 904 and slide back into the fixed cylinder 902. This elastic wedge-tight fit structure ensures that the upper mold plate 5 can automatically eliminate the mechanical gap between itself and the conveying ring 6 during the mold closing process, realize high-precision automatic alignment and guidance, and prevent mold damage or product scrap due to alignment deviation. To control the pressing quality, a conical pressure head 905 is fixedly connected to the bottom center of the upper mold plate 5. The axis of the conical pressure head 905 coincides with the central axis of the upper mold plate 5, and the conical pressure head 905 is a cone shape with the tip pointing downwards. This structure allows the conical pressure head 905 to contact the center hole of the material first when the upper mold plate 5 presses against the material, and to radiate and diffuse the vertical pressure evenly from the center to the surrounding area. This solves the problem that traditional planar pressing can easily cause uneven force on the material edge and produce warping, and significantly improves the flatness of the finished product of elastic cold setting. In a preferred embodiment, to address the problem of material easily adhering to the surface of the lower mold plate 7 after cold pressing, leading to difficulty in demolding, a supporting component 10 is provided at the center of the lower mold plate 7. The supporting component 10 mainly consists of a rubber top plate 1001, a sliding top plate 1002, a sliding block 1003, a return spring 1004, and a bottom cylinder 1005. The bottom cylinder 1005 is a cylindrical body closed at one end, with its open end facing upwards and fixedly connected to the bottom of the central through hole of the lower mold plate 7. The inner diameter of the bottom cylinder 1005 is adapted to the outer diameter of the return spring 1004, providing a stable installation and limiting space for the return spring 1004. To achieve stable lifting and guiding function, the sliding top plate 1002 has a disc-shaped structure with a diameter slightly smaller than the diameter of the central mounting cavity of the lower mold plate 7, so as to facilitate up and down piston-like movement within the mounting cavity. Several rectangular sliding blocks 1003 are symmetrically fixedly connected to the bottom edge of the sliding top plate 1002, and several vertically extending sliding grooves are correspondingly opened on the inner wall of the mounting cavity of the lower mold plate 7. The sliding blocks 1003 slide in the sliding grooves. This keyway-type mating structure can not only guide the sliding top plate 1002 to rise and fall vertically, but also effectively prevent it from rotating circumferentially during the pressure process, ensuring the accuracy of the ejection position. As another preferred embodiment, in order to enhance the positioning and gripping effect of the material, the rubber top plate 1001 is fixedly bonded or vulcanized to the top surface of the sliding top plate 1002. The rubber top plate 1001 is made of a low-temperature resistant rubber material with a certain elastic deformation capacity and a high surface friction coefficient. Its top surface is designed as a slightly convex arc surface or has anti-slip texture. In the natural state, supported by the elastic force of the return spring 1004, the upper surface of the rubber top plate 1001 protrudes from the working plane of the lower mold plate 7. When the conveying ring 6 sends the material to the top, the material first contacts and is supported and positioned by the rubber top plate 1001 to prevent the material from shifting before the mold is closed. As a further preferred embodiment, in order to ensure the overall rigidity and operating accuracy of the equipment, the telescopic component 3 is preferably a high-thrust cylinder or hydraulic cylinder. Its cylinder body is vertically fixed on the upper surface of the top plate of the fixed frame 1 through a flange. Its telescopic shaft passes through the top plate of the fixed frame 1 and is threaded or pin-connected to the top center of the moving component 4. The inverted L-shaped cantilever structure of the moving component 4 is reinforced with reinforcing ribs and can withstand the high-intensity reaction force generated by the upper mold plate 5 during pressing without deformation. In addition, to facilitate the disassembly, maintenance, and cooling fixation of the lower mold plate 7, the fixing ring 8 has a circular structure. Its inner diameter and the outer diameter of the lower mold plate 7 are fastened through tolerance matching. Several countersunk screw holes are evenly distributed on the circumference of the fixing ring 8. The bolt assembly passes through the countersunk screw holes and is locked to the mounting plane on the top of the cooling component 2. This compression fixing method not only ensures close heat conduction contact between the lower mold plate 7 and the cooling component 2, but also facilitates the subsequent replacement of lower mold plates 7 of different specifications to adapt to the production of different models of springs.

[0014] Working principle: When the entire mechanism is in its initial state, after the material completes the previous hot pressing process, it is transferred to the conveying ring 6 through the external conveying mechanism. The conveying ring 6 then drives the hot-pressed bouncy material to move horizontally to directly above the lower mold plate 7. During this process, since the return spring 1004 in the lifting assembly 10 is in a naturally extended state, its elasticity pushes the sliding top plate 1002 and the rubber top plate 1001 to rise, causing the rubber top plate 1001 to protrude from the surface of the lower mold plate 7. After the material arrives, it first contacts and is supported on the rubber top plate 1001, and the high friction characteristics of rubber are used to initially position the material. The pressing process then begins. The telescopic component 3 at the top of the fixed frame 1 is activated, driving the moving component 4 to move the upper mold plate 5 downwards rapidly. When the upper mold plate 5 approaches the material conveying ring 6, the positioning component 9 installed on the side wall of the upper mold plate 5 begins to function. The inclined guide block 901 in the positioning component 9 first contacts the guide groove 903 on the material conveying ring 6. The guide slope at the end of the inclined guide block 901 slides into the groove of the guide groove 903. As the downward pressure continues, the side wall of the guide groove 903 squeezes the inclined guide block 901, forcing it to overcome the resistance of the compression spring 904 and retract into the fixed cylinder 902. This elastic wedge-tight fit eliminates mechanical clearance and achieves high-precision automatic centering guidance between the upper mold plate 5 and the lower mold plate 7. During the continuous downward pressure of the upper mold plate 5 until the mold closes, the conical pressure head 905 at the bottom of the upper mold plate 5 contacts the center of the material and applies pressure, spreading the pressure evenly from the center to the surrounding area. At the same time, the pressure of the upper mold plate 5 forces the rubber top plate 1001 to descend into the mold cavity of the lower mold plate 7 along with the material. At this time, the sliding top plate 1002 slides down along the sliding groove in the lower mold plate 7 and compresses the return spring 1004 in the bottom cylinder 1005, allowing it to accumulate elastic potential energy. Finally, the upper mold plate 5 and the lower mold plate 7 close to compress the material. The cooling component 2 below continues to work, transferring the cooling energy to the material through the lower mold plate 7 secured by the fixing ring 8, completing rapid cooling and shaping. After cold pressing and shaping, the telescopic component 3 reverses its movement, causing the upper mold plate 5 to move upward and reset. The pressure above is removed, and the return spring 1004, which is in a compressed state, quickly releases its energy, pushing the sliding top plate 1002 and the rubber top plate 1001 to spring upward and reset. This action forces the molding material that is tightly attached to the cavity surface of the lower mold plate 7 to be lifted up, so that the material is separated from the mold surface, thereby effectively preventing the material from sticking. Finally, the conveying ring 6 transfers the demolded finished product to the manual material handling area, completing the entire processing cycle.

Claims

1. A cold-setting mechanism for a spring wave, comprising: Fixed frame (1), cooling component (2), telescopic component (3), moving component (4), upper mold plate (5), material conveying ring (6), lower mold plate (7) and fixing ring (8); The telescopic component (3) is fixed on the fixed frame (1), the telescopic component (3) is driven to connect the moving component (4), and the moving component (4) is connected to the upper mold plate (5). The cooling component (2) is located at the bottom of the fixed frame (1), the lower mold plate (7) is located above the cooling component (2) and fixed by the fixed ring (8), and a material conveying ring (6) is provided between the upper mold plate (5) and the lower mold plate (7). Its features are, The material conveying ring (6) is provided with a guide groove (903), and the upper mold plate (5) is provided with a positioning component (9). The positioning component (9) includes a fixed cylinder (902), an inclined guide block (901), and a compression spring (904). The fixed cylinder (902) is fixed to the upper mold plate (5), the inclined guide block (901) is slidably fitted inside the fixed cylinder (902), the compression spring (904) abuts against the inclined guide block (901) and the inner wall of the fixed cylinder (902), and the end of the inclined guide block (901) extends out and is adapted to the guide groove (903). The upper mold plate (5) is provided with a conical pressure head (905) at the bottom; The lower mold plate (7) is provided with a lifting assembly (10); the lifting assembly (10) includes a rubber top plate (1001), a sliding top plate (1002), a sliding block (1003), a return spring (1004), and a bottom cylinder (1005). The rubber top plate (1001) is fixed to the top of the sliding top plate (1002), the bottom of the sliding top plate (1002) is provided with the sliding block (1003), the lower mold plate (7) is provided with a sliding groove adapted to the sliding block (1003), the bottom cylinder (1005) is fixed to the bottom of the lower mold plate (7), and the return spring (1004) is provided in the bottom cylinder (1005) and abuts against the sliding top plate (1002).

2. The cold setting mechanism for a spring wave according to claim 1, characterized in that: The conical pressure head (905) is located at the bottom center of the upper mold plate (5). The conical pressure head (905) has a conical structure and its tip is oriented toward the lower mold plate (7).

3. The cold setting mechanism for a spring wave according to claim 1, characterized in that: The inclined guide block (901) has a guide slope at one end extending out of the fixed cylinder (902), the guide groove (903) is opened radially along the material conveying ring (6), and the inclined guide block (901) slides and presses against the groove opening of the guide groove (903) through the guide slope.

4. The cold setting mechanism for a spring wave according to claim 1, characterized in that: The surface of the rubber top plate (1001) has a high coefficient of friction texture, and in its natural state, the rubber top plate (1001) protrudes from the upper surface of the lower mold plate (7).

5. The cold setting mechanism for a spring wave according to claim 1, characterized in that: The sliding block (1003) slides vertically within the sliding groove, and the sliding groove restricts the sliding top plate (1002) from making linear reciprocating motion along the axial direction of the lower mold plate (7).

6. The cold setting mechanism for a spring wave according to claim 1, characterized in that: One end of the return spring (1004) abuts against the inner bottom wall of the bottom cylinder (1005), and the other end abuts against the center of the bottom surface of the sliding top plate (1002). When the upper mold plate (5) is pressed down, the sliding top plate (1002) partially slides into the bottom cylinder (1005).

7. The cold setting mechanism for a spring wave according to claim 1, characterized in that: The fixing ring (8) is fitted around the outer periphery of the lower mold plate (7) and is fixedly connected to the mounting surface on the top of the cooling component (2) by bolt assembly.

8. The cold setting mechanism for a spring wave according to claim 1, characterized in that: The telescopic component (3) is a cylinder or a hydraulic cylinder. The telescopic shaft of the telescopic component (3) passes vertically downward through the top plate of the fixed frame (1) and is fixedly connected to the moving component (4).

9. The cold setting mechanism for a spring wave according to claim 1, characterized in that: The movable part (4) has an inverted L-shaped structure, with its vertical side connected to the telescopic part (3) and its horizontal side cantilevered to fix the upper mold plate (5).

Images