Inner supporting tool for assembling piezoelectric transducer

Abstract

The utility model provides an inner supporting tool for assembling a piezoelectric transducer, and relates to the technical field of piezoelectric transducer manufacturing devices. Comprising a base and a supporting module, and the supporting module is arranged on the base; the supporting module comprises a fixing shaft and a supporting main body part, and the supporting main body part is arranged on the peripheral side of the fixing shaft in a sleeving mode; the support main body part comprises a circular support consumable plate, the support consumable plate is configured to support a ceramic circular ring spliced by a plurality of piezoelectric ceramic pieces, and the support state of the support consumable plate is destroyed after the ceramic circular ring is spliced. On the basis, the supporting main body part can be disassembled by destroying the supporting state of the supporting consumable plate so as to relieve the tight combination relation between the ceramic circular ring and the inner supporting tool, so that the ceramic circular ring can be easily taken, and the problems that in the using process of an existing inner supporting tool, demolding is difficult, and the working efficiency is high are solved. Therefore, the product yield and the operation efficiency are seriously influenced.

Description

Technical Field

[0001] This utility model relates to the technical field of piezoelectric transducer manufacturing equipment, specifically an internal support fixture for assembling piezoelectric transducers. Background Technology

[0002] In the field of piezoelectric transducer manufacturing, when manufacturing large-size piezoelectric ceramic ring transducers, due to process limitations, the piezoelectric ceramic inlay ring assembly method is usually adopted. That is, multiple small piezoelectric ceramic pieces (usually long strips) with matching shapes are assembled into a ring shape under the support of inner ring tooling, and electrode plates are sandwiched between the piezoelectric ceramic pieces. After the assembly is completed, it is necessary to temporarily fix it with rubber bands or straps on the outer circumference of the ring, and then the adhesive is cured.

[0003] In the assembly of piezoelectric ceramic inlaid rings, the performance of the inner support fixture is crucial. However, existing inner support fixtures are mostly integral metal or rigid plastic structures, which present difficulties in demolding in practical applications. This can seriously affect product yield and operational efficiency. Specifically, since multiple piezoelectric ceramic pieces are assembled in a way that is tightly attached to the inner support fixture, a tight bond is formed between the ceramic ring and the inner support fixture after the adhesive is cured. Demolding in this situation is time-consuming and laborious. Furthermore, forcibly pulling out the inner support fixture or the ceramic ring can easily cause the brittle piezoelectric ceramic pieces to crack or chip, which will significantly reduce product yield, waste resources, and increase investment costs.

[0004] Furthermore, many current internal support fixtures lack high shape precision, making it difficult to ensure that the piezoelectric ceramic pieces are aligned on the same circumference during assembly. This results in poor concentricity among the assembled piezoelectric ceramic pieces, affecting the product's geometric accuracy and acoustic performance. Additionally, metal internal support fixtures are bulky and inconvenient to use and move; while plastic internal support fixtures are lightweight but have poor stability during use, further impacting the assembly effect. Utility Model Content

[0005] The purpose of this invention is to provide an internal support fixture for assembling piezoelectric transducers, in order to solve the problem mentioned in the background art, where existing internal support fixtures cause demolding difficulties during use, which seriously affects product yield and operational efficiency.

[0006] This utility model is achieved using the following technical solution:

[0007] An internal support fixture for assembling a piezoelectric transducer includes a base and a support module, the support module being mounted on the base; the support module includes a fixed shaft and a support body, the support body being sleeved on the outer periphery of the fixed shaft; the support body includes an annular support consumable plate, the support consumable plate being configured to support multiple piezoelectric ceramic sheets assembled into a ceramic ring, and the support state of the support consumable plate being destroyed after the ceramic ring is assembled.

[0008] The internal support fixture provided by this utility model is equipped with a fixed shaft to achieve center positioning and ensure concentricity, and a support body to achieve uniform radial support when assembling piezoelectric ceramic sheets. The support body adopts a support consumable plate whose support state can be destroyed. In actual use, after the internal support fixture completes its support work and the ceramic ring is cured, the support body can be disassembled by destroying the support consumable plate, thereby breaking the tight connection between the ceramic ring and the internal support fixture. This allows the ceramic ring to be easily removed without the need for hard pulling, thus achieving a non-destructive demolding effect.

[0009] Furthermore, the supporting material plate is made of polyurethane block.

[0010] In the aforementioned solution, the superior properties of polyurethane blocks make them an ideal sacrificial material. Specifically, they possess precisely controllable mechanical properties, providing the necessary strength and rigidity during support while exhibiting moderate brittleness during demolding, allowing for preferential and controlled destruction. Furthermore, polyurethane blocks can be easily broken and removed using a variety of mechanical or chemical methods, such as simple tools like hammers, chisels, and pliers, or specialized crushers, shredders, and cutting equipment like blades and wire saws, thus offering high flexibility in practical applications. Additionally, the low material and processing costs of polyurethane blocks make them economically viable as consumables.

[0011] Furthermore, the top of the fixed shaft is provided with an external thread, which engages with a locking nut located above the support body.

[0012] In the above scheme, tightening the locking nut can compress the main support part, thereby helping to improve the rigidity of the tooling and the stability of the support; loosening or / and removing the locking nut can help to disassemble the main support part.

[0013] Furthermore, the supporting main body also includes an annular supporting metal plate, which is arranged in layers with the supporting consumable plate; when the supporting metal plate is located on the upper layer of the supporting consumable plate, the outer edge of the supporting metal plate is located inside the outer edge of the supporting consumable plate.

[0014] In the above scheme, the supporting metal plate provides a robust, stable and non-deformable rigid reference plane. As a reusable structural frame, it can ensure the overall rigidity and flatness of the tooling. In addition, the supporting metal plate can increase the overall mass of the tooling to ensure stability during use.

[0015] Furthermore, the supporting main body includes an upper supporting part and a lower supporting part; both the upper supporting part and the lower supporting part include a layered sandwich structure, wherein the layered sandwich structure includes an upper supporting metal plate, a supporting material plate and a lower supporting metal plate arranged from top to bottom.

[0016] In the above scheme, by setting up an upper support part and a lower support part, radial support can be provided to the upper and lower parts of the piezoelectric ceramic sheet respectively, thereby effectively avoiding vertical displacement during placement and assembly, improving the accuracy of assembly, and thus improving the concentricity and roundness of the ceramic ring.

[0017] Furthermore, in the supporting main body, the supporting consumable plate in the upper supporting part and the supporting consumable plate in the lower supporting part have the same diameter and are concentrically distributed around a fixed axis; in the upper supporting part, the outer edges of the upper supporting metal plate and the lower supporting metal plate are both located inside the outer edge of the supporting consumable plate.

[0018] In the above scheme, the support material plates in the upper support part and the lower support part serve as structures that directly support the piezoelectric ceramic sheet. By setting the two to have equal diameters and be concentrically distributed around a fixed axis, concentricity and roundness can be effectively guaranteed.

[0019] Furthermore, in the lower support portion, the base serves as the lower support metal plate, and the outer edge of the upper support metal plate is located inside the outer edge of the support consumable plate.

[0020] In the above solution, by using the base as the lower supporting metal plate, a multi-layered support structure distributed vertically can be achieved while reducing material usage, thereby effectively saving raw material costs and assembly operation costs.

[0021] Furthermore, the supporting main body also includes a T-shaped partition, which is disposed between the upper supporting metal plate and the lower supporting metal plate of the lower supporting part and / or the upper supporting part, and the outer edge of the T-shaped partition is located inside the outer edge of the supporting consumable plate.

[0022] In the above solution, by setting T-shaped spacers, the height of the main support body can be increased to match the height of the piezoelectric ceramic sheet; furthermore, a gap can be formed inside the support module, thereby reducing the overall weight of the tooling and facilitating its cooperation with the support metal plate to keep the overall weight of the tooling within a reasonable range; in addition, the gap can also provide space for the removal of the support consumable plate and for operation.

[0023] Furthermore, both the upper support metal plate of the upper support portion and the upper support metal plate of the lower support portion are provided with lifting structures on their upper surfaces; on the lower support portion, the lifting structures are distributed in the gap between the T-shaped spacer and the upper support metal plate.

[0024] In the above scheme, by setting up a lifting structure, it is easy to lift the upper support metal plate, so as to facilitate the disassembly of the support material plate below the upper support metal plate.

[0025] The beneficial effects achieved by this utility model are:

[0026] An internal support fixture for assembling piezoelectric transducers is provided. By incorporating a support module including a fixed shaft and a support body, and by including a support material plate in the support body, uniform radial support can be achieved during the assembly of piezoelectric ceramic sheets, thereby forming a ceramic ring for the piezoelectric transducer. After the internal support fixture completes its support function and the ceramic ring solidifies, the support body can be disassembled by breaking the support of the support material plate, thus releasing the tight connection between the ceramic ring and the internal support fixture, allowing for easy removal of the ceramic ring. Compared to existing internal support fixtures that require forced removal, the internal support fixture provided by this invention achieves a non-destructive demolding effect, avoiding damage to expensive ceramic parts caused by forced demolding, thereby improving product yield and preventing resource waste and increased costs. Attached Figure Description

[0027] Figure 1 This is a cross-sectional structural diagram of the internal support tooling described in an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the inner support fixture supporting the ceramic ring according to an embodiment of the present invention;

[0029] In the diagram: 1. Base; 2. Fixed shaft; 3. Locking nut; 4. Upper support metal plate 1; 5. Support material plate 1; 6. Lower support metal plate 1; 7. T-shaped spacer; 8. Upper support metal plate 2; 9. Support material plate 2; 10. Piezoelectric ceramic sheet. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0031] Example 1

[0032] This embodiment provides an internal support fixture for assembling piezoelectric transducers. Please refer to [reference needed]. Figure 1 and Figure 2 It includes a base 1 and a support module, specifically:

[0033] The base 1 is the foundation of the entire internal support fixture. In this embodiment, the base 1 is circular and is made of steel plate.

[0034] The support module is mounted on the base 1 and includes a fixed shaft 2 and a support body. The support body is sleeved on the outer periphery of the fixed shaft 2, wherein:

[0035] The fixed shaft 2 is a vertically arranged cylinder, and its lower end is fixedly connected to the base 1. The fixed shaft 2 and the base 1 are concentrically distributed. The top of the fixed shaft 2 is provided with an external thread, which cooperates with the locking nut 3. The locking nut 3 is located above the main support body.

[0036] The supporting main body includes a supporting material plate and a supporting metal plate. The supporting material plate is annular and its size matches the inner diameter of the ceramic ring to be produced. The supporting material plate is configured to support multiple piezoelectric ceramic sheets 10 assembled into a ceramic ring, and the supporting state of the supporting material plate is destroyed after the ceramic ring is assembled. The supporting metal plate is annular and is layered with the supporting material plate. When the supporting metal plate is on top of the supporting material plate, its outer edge is located inside the outer edge of the supporting material plate. In this embodiment:

[0037] The main support structure includes an upper support section, a lower support section, and a T-shaped partition 7.

[0038] Both the upper support section and the lower support section include a three-layer sandwich structure. The three-layer sandwich structure includes an upper support metal plate, a support consumable plate, and a lower support metal plate arranged from top to bottom. Specifically, the upper support section includes an upper support metal plate 4, a support consumable plate 5, and a lower support metal plate 6, and the lower support section includes an upper support metal plate 8, a support consumable plate 9, and a lower support metal plate 2.

[0039] Both the support material plate 5 in the upper support section and the support material plate 9 in the lower support section are made of polyurethane blocks. The diameters of the support material plate 5 and the support material plate 9 are equal and they are concentrically distributed around the fixed axis 2. In this embodiment, the diameters of the support material plate 5 and the support material plate 9 are smaller than the diameter of the base 1.

[0040] In the upper support section, the upper support metal plate 4 and the lower support metal plate 6 are both circular rings with equal diameters and are made of steel plates. The upper support metal plate 4 and the lower support metal plate 6 are concentrically distributed with the support consumable plate 5, and the diameters of the upper support metal plate 4 and the lower support metal plate 6 are smaller than the diameter of the support consumable plate 5. Therefore, the outer edges of the upper support metal plate 4 and the lower support metal plate 6 are located inside the outer edge of the support consumable plate 5.

[0041] In the lower support part, the base 1 serves as the lower support metal plate 2, and the upper support metal plate 2 8 is an annular ring with the same diameter as the upper support metal plate 1 4 and is also made of steel plate. The outer edge of the upper support metal plate 2 8 is located inside the outer edge of the support consumable plate 2 9.

[0042] The T-shaped spacer 7 is preferably disposed between the upper support metal plate 2 8 and the lower support metal plate 1 6 of the lower support portion (in other embodiments, it may also be disposed between the upper support metal plate 1 4 and the lower support metal plate 1 6 or between the upper support metal plate 2 8 and the lower support metal plate 2), and the T-shaped spacer 7 and each support consumable plate and support metal plate are concentrically distributed around the fixed axis 2, and the outer edge of the T-shaped spacer 7 is located inside the outer edge of the two support consumable plates.

[0043] Both the upper support metal plate 4 and the upper support metal plate 8 are provided with lifting structures (not shown in the figure). In this embodiment, the lifting structure is specifically two lifting lines that are symmetrically welded (in other embodiments, it can also be set as a lifting ring, hook ring, etc.). In the lower support part, the lifting structure is distributed in the gap between the T-shaped partition 7 and the upper support metal plate 8.

[0044] Based on the above structure, the method of using this internal support fixture is as follows:

[0045] After assembling the inner support fixture according to the above structure, the piezoelectric ceramic ring can be assembled. During the assembly process, multiple piezoelectric ceramic sheets 10 and electrode sheets are sequentially wrapped around the outer periphery of the support consumable plate 1 5 and the support consumable plate 2 9 on the base 1, so that the formed ceramic ring can maintain its shape by relying on the radial support provided by the support module. After the ceramic ring is formed, rubber bands are used to tie it around the outer ring for temporary fixation, and then the adhesive is cured. After the adhesive has cured, the demolding operation can begin, including:

[0046] First, unscrew the locking nut 3 and remove the upper support metal plate 4. Then, use a mold-breaking tool or equipment (a tool or equipment that breaks the support material plate, such as a heated cutter or cutting machine) to break the support material plate 5, thereby releasing its support and dismantling the sandwich structure of the upper support module. Next, remove the lower support metal plate 6, the T-shaped spacer 7, and the upper support metal plate 8 in sequence. Then, use the mold-breaking tool or equipment again to break the support material plate 9. At this point, the tight connection between the ceramic ring and the main support body is successfully released, and the ceramic ring can be easily and smoothly removed. Finally, clean up the debris from the support material plate and reassemble the inner support fixture to prepare for the next operation.

[0047] In summary, the internal support fixture provided in this embodiment allows for non-destructive demolding of the ceramic ring after curing by breaking the supporting consumable plate, avoiding damage to the ceramic caused by hard demolding. Furthermore, the internal support fixture has a robust structure with good rigidity and uniform radial support, effectively ensuring the concentricity and roundness of the assembled ceramic rings. It also boasts a reasonable weight, facilitating operation and movement while maintaining stability. Additionally, the components of this internal support fixture have simple structures, are easy to manufacture, and the polyurethane blocks are low-cost, making them economically feasible as consumables.

[0048] It should be noted that in practical applications, this internal support fixture can be combined with automated mold breaking equipment, debris cleaning equipment, fixture assembly equipment, and mobile transfer equipment (the specific combination method is based on existing technology and adaptive settings) to maximize the automation and efficiency of the production process. Furthermore, any parts not described in detail or elaborated in this utility model are existing technologies and do not constitute improvements made by this utility model to existing technologies, nor are they within the protection scope of this utility model's technical solution; therefore, they will not be elaborated upon further in this document.

[0049] Of course, the above description is only a preferred embodiment of this utility model and should not be considered as limiting the scope of the embodiments of this utility model. This utility model is not limited to the above examples, and all equivalent changes and improvements made by those skilled in the art within the scope of this utility model should be included in the patent coverage of this utility model.

Claims

1. An internal support fixture for assembling piezoelectric transducers, characterized in that: It includes a base (1) and a support module, the support module being disposed on the base (1); The support module includes a fixed shaft (2) and a support body, the support body being sleeved on the outer periphery of the fixed shaft (2); The main support component includes an annular support material plate, which is configured to support multiple piezoelectric ceramic sheets (10) assembled into a ceramic ring. After the ceramic ring is assembled, the support state of the support material plate is destroyed.

2. The internal support fixture for assembling a piezoelectric transducer according to claim 1, characterized in that: The supporting material plate is made of polyurethane block.

3. The internal support fixture for assembling a piezoelectric transducer according to claim 2, characterized in that: The top of the fixed shaft (2) is provided with an external thread, which is engaged with the locking nut (3), which is located above the supporting body.

4. The internal support fixture for assembling a piezoelectric transducer according to claim 1 or 2, characterized in that: The supporting main body also includes an annular supporting metal plate, which is arranged in layers with the supporting consumable plate; when the supporting metal plate is located on the upper layer of the supporting consumable plate, the outer edge of the supporting metal plate is located inside the outer edge of the supporting consumable plate.

5. The internal support fixture for assembling a piezoelectric transducer according to claim 4, characterized in that: The main support structure includes an upper support portion and a lower support portion; Both the upper support portion and the lower support portion include a layered sandwich structure, which includes an upper support metal plate, a support material plate, and a lower support metal plate arranged from top to bottom.

6. The internal support fixture for assembling a piezoelectric transducer according to claim 5, characterized in that: In the main support body, the diameters of the support material plates in the upper support part and the support material plates in the lower support part are equal and they are concentrically distributed around the fixed axis (2). In the upper support portion, the outer edges of both the upper and lower support metal plates are located inside the outer edge of the support material plate.

7. The internal support fixture for assembling a piezoelectric transducer according to claim 5, characterized in that: In the lower support part, the base (1) serves as the lower support metal plate, and the outer edge of the upper support metal plate is located inside the outer edge of the support consumable plate.

8. The internal support fixture for assembling a piezoelectric transducer according to claim 5, characterized in that: The supporting main body also includes a T-shaped partition (7), which is disposed between the upper supporting metal plate and the lower supporting metal plate of the lower supporting part and / or the upper supporting part. The outer edge of the T-shaped partition (7) is located inside the outer edge of the supporting material plate.

9. The internal support fixture for assembling a piezoelectric transducer according to claim 8, characterized in that: The upper support metal plate of the upper support part and the upper support metal plate of the lower support part are both provided with lifting structures on their upper surfaces; on the lower support part, the lifting structures are distributed in the gap between the T-shaped partition (7) and the upper support metal plate.

Images