WO2020124320A1 - 一种环状成型装置及其使用方法 - Google Patents

一种环状成型装置及其使用方法 Download PDF

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Publication number
WO2020124320A1
WO2020124320A1 PCT/CN2018/121551 CN2018121551W WO2020124320A1 WO 2020124320 A1 WO2020124320 A1 WO 2020124320A1 CN 2018121551 W CN2018121551 W CN 2018121551W WO 2020124320 A1 WO2020124320 A1 WO 2020124320A1
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Prior art keywords
ring
piezoelectric ceramic
molding device
section
mold
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PCT/CN2018/121551
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English (en)
French (fr)
Inventor
马腾
黄继卿
李永川
李洋
杨晔
靳遥
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深圳先进技术研究院
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Priority to PCT/CN2018/121551 priority Critical patent/WO2020124320A1/zh
Publication of WO2020124320A1 publication Critical patent/WO2020124320A1/zh

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/08—Shaping or machining of piezoelectric or electrostrictive bodies
    • H10N30/085—Shaping or machining of piezoelectric or electrostrictive bodies by machining

Definitions

  • the invention relates to the technical field of ultrasonic equipment, in particular to an annular molding device and a method of using the same.
  • the existing ring forming method is to splice two piezoelectric ceramic sheets with a curved cross-section into a completed ring.
  • the disadvantage of this method is that two piezo ceramic sheets are spliced together and two marks will appear in the middle. In use, one of the joints cannot be avoided. This joint makes the connection, spacing, and consistency between the transducer elements change, which will inevitably affect the imaging effect of the tissue directly at the joint.
  • the two Piezoelectric ceramic sheets are easily misaligned during splicing, thereby generating steps in the radial direction and/or axial direction, which affects the quality of the piezoelectric ceramic ring.
  • the first object of the present invention is to provide a ring-shaped molding device to facilitate the manufacture of piezoelectric ceramic rings and reduce the contact marks when the piezoelectric ceramic rings are molded;
  • the second object of the present invention is to provide a A method of using the above-mentioned ring-shaped molding device.
  • the present invention provides the following technical solutions:
  • An annular molding device including:
  • the molding assembly includes a plurality of stampers, and each of the stampers can cooperate with each other to form a cavity;
  • the middle bearing assembly includes a middle bearing tube, a center rod and a buffer sleeve.
  • the middle bearing tube includes a contraction structure, and the contraction structure includes a plurality of contraction slits opened along the length direction of the middle bearing tube and distributed circumferentially.
  • the center rod is detachably inserted into the middle bearing tube and tightens the contraction structure, and the buffer sleeve is detachably tightened outside the contraction structure;
  • the gap between each press mold and the buffer sleeve forms an annular cavity.
  • the center bearing pipe is threadedly engaged with the central rod.
  • the middle bearing pipe includes a connecting pipe section and a shrinking pipe section connected to each other, the shrinkage slit is opened in the shrinking pipe section, and the center rod includes a threaded section for cooperating with the connecting pipe section and The polished rod section matched with the contracted tube section.
  • the intermediate bearing pipe further includes a tapered pipe section, a large end of the tapered pipe section is connected to the constricted pipe section, a small end of the tapered pipe section is connected to the connection pipe section, and the center rod includes a connection to the A threaded segment and a tapered rod segment between the polished rod segments, a small end of the tapered rod segment is connected to the threaded segment, and a large end of the tapered tube segment is connected to the polished rod segment.
  • an operation handle is provided at one end of the center rod.
  • a positioning step surface is formed on the side wall of the cavity, and the positioning step surface is perpendicular to the axis of the annular cavity.
  • the two adjacent dies are locked by threaded fasteners.
  • At least one of the clamping surfaces of the compression mold is provided with a mold opening groove, and the mold opening groove has an exposed opening after the mold assembly is closed.
  • the buffer sleeve is a rubber sleeve.
  • the length of the shrink joint is greater than the length of the buffer sleeve.
  • the present invention provides a method for using a ring-shaped molding device, including the steps of:
  • Each moving mode is close to the static mode to close the mold and press the piezoelectric ceramic sheet into a piezoelectric ceramic ring;
  • the method further includes the steps of:
  • the present invention provides a ring-shaped molding device including a molding component and a middle bearing component, wherein the molding component includes a plurality of stamping dies, and each stamping die can cooperate with each other to form a cavity; the middle bearing component includes a middle bearing The tube, the center rod and the buffer sleeve.
  • the center bearing tube includes a contraction structure.
  • the contraction structure includes a plurality of shrinkage slits opened along the length of the center bearing tube and distributed circumferentially.
  • the center rod is detachably inserted into the center bearing tube and expands the contraction structure Tight, that is, when the center rod is pulled out of the middle bearing tube, due to the loss of support, the shrinking structure of the middle bearing tube can be contracted in the direction of the middle bearing tube axis to facilitate demolding.
  • the buffer sleeve is used to isolate the piezoelectric ceramic sheet from the shrinkage gap to make the product A flat and smooth inner surface is formed, and the product is buffered and protected when the mold is removed.
  • the buffer sleeve is detachably tightened outside the contraction structure; when the molding component is closed, the gap between each die and the buffer sleeve is used to Ring cavity of molded product;
  • FIG. 1 is an axonometric view of a ring-shaped molding device according to an embodiment of the present invention when a mold is closed;
  • FIG. 2 is an exploded view of an annular molding device provided by an embodiment of the present invention.
  • FIG. 3 is an axonometric view of an intermediate bearing component provided by an embodiment of the present invention.
  • FIG. 4 is an axonometric view of a middle bearing tube of a middle bearing assembly provided by an embodiment of the present invention
  • FIG. 6 is a schematic diagram of the intermediate component pressing the piezoelectric ceramic sheet toward one of the stampers in the method for using the ring-shaped molding device provided by the embodiment of the present invention
  • FIG. 7 is a schematic view of a ring-shaped molding device provided by an embodiment of the present invention using a bearing component to press a piezoelectric ceramic sheet on the molding surface of one of the stampers;
  • FIG. 8 is a schematic structural diagram of a ring-shaped molding device provided by an embodiment of the present invention after mold clamping;
  • FIG. 9 is a schematic structural view of a ring molding device provided by an embodiment of the present invention after removing a center rod;
  • FIG. 10 is a schematic structural view of a ring-shaped molding device provided by an embodiment of the present invention after removing a middle bearing tube;
  • FIG. 11 is a schematic structural view of a ring-shaped molding device provided by an embodiment of the present invention after removing a buffer sleeve.
  • 1 is the molding assembly; 100 is the mold opening; 110 is the upper mold; 111 is the upper molding cavity; 112 is the first stepped groove; 113 is the threaded hole; 120 is the lower mold; 121 is the lower molding cavity; 122 It is the second step groove; 123 is the second arc-shaped step surface; 2 is the middle bearing component; 210 is the center rod; 211 is the operating handle; 212 is the smooth rod section; 213 is the thread section; 214 is the tapered rod section; 220 is the middle Bearing tube; 221 is a contracted tube segment; 222 is a connecting tube segment; 223 is a contraction joint; 224 is a tapered tube segment; 230 is a buffer sleeve.
  • FIG. 1 is an axonometric view of a ring-shaped molding device according to an embodiment of the present invention when the mold is closed
  • FIG. 2 is an exploded view of the ring-shaped molding device according to an embodiment of the invention
  • FIG. 3 is The axonometric view of the intermediate bearing component provided by the embodiment of the invention.
  • An embodiment of the present invention provides a ring-shaped molding device, including a molding component 1 and an intermediate component 2.
  • the forming assembly 1 includes a plurality of stamping dies, and each stamping die can cooperate with each other to form a cavity;
  • the middle bearing assembly 2 includes a middle bearing tube 220, a center rod 210, and a buffer sleeve 230, and the middle bearing tube 220 includes a contraction structure, a contraction structure Including a plurality of shrinkage slits 223 opened along the longitudinal direction of the center bearing tube 220 and distributed circumferentially, the center rod 210 is detachably inserted into the center bearing tube 220 and tightens the contraction structure, that is, when the center rod 210 is withdrawn from the center bearing tube 220 Due to the loss of support, the shrinkage structure of the middle bearing tube 220 can shrink toward the axis of the middle bearing tube 220 to facilitate demolding.
  • the buffer sleeve 230 is used to isolate the piezoelectric ceramic sheet from the shrinkage gap 223, so that the product forms a smooth and smooth inner surface , And buffer the product when removing the mold, the buffer sleeve 230 is detachably tightened outside the contraction structure; when the molding assembly 1 is closed, the gap between each die and the buffer sleeve 230 constitutes the product for molding the product Ring cavity.
  • a mold release agent is applied to the side walls of each stamper used to form a cavity to facilitate release Mold, heat the piezoelectric ceramic sheet until it softens, and then place the piezoelectric ceramic sheet on one of the pressing molds coated with the mold release agent forming surface, and then press the assembled intermediate bearing assembly 2 on the piezoelectric ceramic sheet to make the pressure
  • the electric ceramic sheet fits the molding surface; the rest of the pressing molds close to the closing mold to press the piezoelectric ceramic sheet on the middle bearing assembly 2 to form a piezoelectric ceramic ring; after the piezoelectric ceramic ring cools, remove the center rod of the middle bearing assembly 2 in turn 210, the middle bearing tube 220 and the buffer sleeve 230; it can be seen that when using the above-mentioned ring-shaped molding device, a plurality of stamping dies are folded around the middle bearing assembly 2 to press a piece of piez
  • the cavity of the forming component 1 is cylindrical, and the outer surface of the middle bearing component 2 is also cylindrical.
  • the cross-section of the product formed by the combination of the two is a circular ring, and In other embodiments, other shapes such as square, ellipse, etc. may also be used, and the shape of the inner cavity of the central bearing assembly 2 may be the same as or different from the contour shape of the central bearing assembly 2.
  • the middle bearing tube 220 and the center rod 210 can be plug-fitted, but it can be understood that in the case of compression and clamping, the plug-in matching middle bearing tube 220 and the center rod 210 are difficult to separate and form Pressed ceramic rings are only one step in the manufacture of ring-shaped transducers, and the backing material needs to be poured into the pressed ceramic rings without disassembling the mold. Therefore, if the above non-removable mold backing is used in the production process For the material method, generally, the middle bearing tube 220 and the center rod 210 do not use a plug-and-fit method, but a screw thread matching method.
  • the middle bearing tube 220 and the center rod 210 and the screw thread can ensure that the middle bearing tube 220
  • the tight coordination of the center rod 210 after the piezoelectric ceramic ring is formed and cooled, by rotating the center rod 210, the thrust of the threaded fit between the center rod 210 and the center carrier tube 220 can be withdrawn from the center carrier tube 220, which is convenient for Take out the middle bearing assembly 2 without removing the mold.
  • the middle bearing tube 220 includes a connecting pipe segment 222 and a shrinking tube segment 221 connected to each other, a shrinking slit 223 is opened in the shrinking tube segment 221,
  • the central rod 210 includes a threaded segment 213 and a smooth rod segment 212, wherein the threaded segment 213 is used to cooperate with the connecting pipe section 222, and the smooth rod section 212 is used to cooperate with the shrinking pipe section 221.
  • the threaded section 213 is provided with an external thread
  • the connecting pipe section 222 is provided with an internal thread
  • the screw section 213 may be provided with an internal thread
  • the connecting pipe section 222 may be provided with an external thread
  • the intermediate bearing tube 220 further includes a tapered tube section 224.
  • the large end of the tapered tube section 224 is connected to the shrinkable tube section 221.
  • the shrinkage slit 223 on the shrinkable tube section 221 extends to the tapered tube section 224
  • the small end of the tapered tube section 224 is connected to the connecting tube section 222
  • the central rod 210 includes a tapered rod section 214 connected between the threaded section 213 and the polished rod section 212
  • the small end of the tapered rod section 214 is connected to the threaded section 213, and the tapered tube section 224
  • the large end of the shaft is connected to the smooth rod section 212.
  • the tapered surface section between the tapered rod section 214 and the tapered tube section 224 can ensure that the center rod 210 will tighten the shrinkage tube section 221. The requirements for accuracy are lower and the effect is better.
  • one end of the center rod 210 is provided with an operation handle 211.
  • a positioning step surface is formed on the side wall of the cavity of the molding assembly 1, and the positioning step surface is perpendicular to the axis of the annular cavity, as shown in FIGS. 1 and 2, in a specific embodiment of the present invention, molding The assembly 1 includes an upper die 110 and a lower die 120.
  • the upper molding cavity 111 of the upper die 110 is provided with a first arc-shaped step surface (not shown), and the lower molding cavity 121 of the lower die 120 is provided.
  • the positioning step surface can position the piezoelectric ceramic ring to prevent its displacement.
  • the dies in the forming assembly 1 can be relatively fixed by clamping, or can be relatively fixed by connecting parts.
  • it is preferable to use threaded fasteners to lock two adjacent dies Specifically, as shown in FIGS. 1 and 2, the upper die 110 and the lower die 120 are respectively provided with threaded holes 113 at corresponding positions, and the threaded fasteners are respectively connected to the upper die 110 and the lower die 120.
  • the screw holes 113 cooperate to lock the upper stamper 110 and the lower stamper 120.
  • the upper stamper 110 and the lower stamper 120 are respectively provided with at least two screw holes 113, and at least two of the same stamper
  • the screw holes 113 are symmetrically distributed on both sides of the cavity.
  • a mold opening groove 100 may be provided on the clamping surface of at least one stamper.
  • the mold opening groove 100 has an exposed opening after the mold assembly 1 is closed, and the opening is used to insert a screwdriver Use tools to disassemble two adjacent dies, as shown in FIG. 2, the first step groove 112 is provided on the clamping surface of the upper die 110, and the second step is provided on the clamping surface of the lower die 120 In the groove 122, when the upper die 110 and the lower die 120 are closed, the first step groove 112 and the second step groove 122 cooperate with each other to form a mold opening 100.
  • the cushion sleeve 230 should be made of a material with a certain elasticity.
  • the cushion sleeve 230 is a rubber sleeve.
  • the length of the shrinkage slit 223 is greater than the length of the buffer sleeve 230.
  • the present invention provides a method for using the above-mentioned ring-shaped molding device.
  • the method includes the following steps:
  • the mold release agent is wax.
  • the wax is only the embodiment of the present invention.
  • a preferred embodiment provided is not actually limited to this, and other release agents can also be used, which are not limited here; in the embodiment of the present invention, as shown in FIG. 6, the following stamper 120 is used as a static mold.
  • the stamper 110 serves as a movable mold.
  • S102 preheating the piezoelectric ceramic sheet to soften the piezoelectric ceramic sheet, and placing the piezoelectric ceramic sheet on the static molding surface;
  • the assembled center bearing assembly 2 means that the center rod 210 and the center bearing tube 220 closely cooperate to tighten the center bearing tube 220, and the buffer sleeve 230 is sleeved on the contracted tube section 221 of the center bearing tube 220 to play the role of isolation and buffering, such as As shown in Figure 7.
  • the upper die 110 and the lower die 120 are closed, and the piezoelectric ceramic sheet is pressed against the buffer sleeve 230 of the center bearing assembly 2 so that the piezoelectric ceramic sheet is formed into a ring shape.
  • the backing can be poured without removing the mold, which is convenient for the production of the ring-shaped transducer.

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  • Manufacturing & Machinery (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

一种环状成型装置及其使用方法，该环状成型装置包括成型组件（1）及中承组件（2），其中，成型组件（1）包括多个压模，各个压模相互配合围成空腔；中承组件（2）包括中承管（220）、中心杆（210）及缓冲套（230），中承管（220）包括收缩结构，收缩结构包括多个沿中承管（220）长度方向开设且周向分布的收缩缝（223），中心杆（210）可拆卸地插入中承管（220）中并将收缩结构涨紧，该缓冲套（230）可拆卸地紧箍于收缩结构外；成型组件（1）合模时，各个压模与缓冲套（230）之间的间隙构成用于成型产品的环状型腔；在使用时，通过多个压模在中承组件（2）周围合拢，能够将一片压电陶瓷片压成环形结构，从而使接痕减少至一条，保证压电陶瓷环的使用效果，同时，压制一片压电陶瓷片形成压电陶瓷环不容易错位，有助于提高压电陶瓷环的质量。

Description

一种环状成型装置及其使用方法 技术领域
本发明涉及超声设备技术领域，特别涉及一种环状成型装置及其使用方法。
背景技术
基于超声换能器在医学影像的广泛应用，为了得到消化道、鼻腔、血管大动脉等管状组织的影像文档，通常要将换能器做成环状或者将单阵元换能器旋转得到完整图像。
现有的环状成形方法是将两片横截面为弧形的压电陶瓷片拼接成一个完成的环形，此方法的缺点在于两片压电陶瓷片拼接在一起中间处会出现两道接痕，在使用时，其中一道接痕无法避免，该接痕使得换能器阵元间衔接、间距、一致性发生改变，势必影响在接痕处正对的组织成像效果，除此之外，两片压电陶瓷片在拼接时容易错位，从而在径向上和/或轴向上产生台阶，影响压电陶瓷环的质量。
发明内容
有鉴于此，本发明的第一个目的在于提供一种环状成型装置，以便于压电陶瓷环的制造，减少压电陶瓷环成型时的接痕；本发明的第二个目的在于提供一种上述环状成型装置的使用方法。
为实现上述第一个目的，本发明提供如下技术方案：
一种环状成型装置，包括：
成型组件，包括多个压模，各个所述压模能够相互配合围成空腔；
中承组件，包括中承管、中心杆以及缓冲套，所述中承管包括收缩结构，所述收缩结构包括多个沿所述中承管长度方向开设且周向分布的收缩缝，所述中心杆可拆卸地插入所述中承管中并将所述收缩结构涨紧，所述缓冲套可拆卸地紧箍于所述收缩结构外；
所述成型组件合模时，各个所述压模与所述缓冲套之间的间隙构成环状型腔。
优选地，所述中承管与所述中心杆螺纹配合。
优选地，所述中承管包括相互连接的连接管段以及收缩管段，所述收缩缝开设于所述收缩管段，所述中心杆包括用于与所述连接管段配合的螺纹段以及用于与所述收缩管段配合的光杆段。
优选地，所述中承管还包括锥管段，所述锥管段的大端与所述收缩管段连接，所述锥管段的小端与所述连接管段连接，所述中心杆包括连接于所述螺纹段以及所述光杆段之间的锥杆段，所述锥杆段的小端与所述螺纹段连接，所述锥管段的大端与所述光杆段连接。
优选地，所述中心杆的一端设置有操作把手。
优选地，所述空腔的侧壁上形成有定位台阶面，所述定位台阶面与所述环状型腔轴线垂直。
优选地，相邻两个所述压模之间通过螺纹紧固件锁紧。
优选地，至少一个所述压模的合模面上设置有开模槽，所述开模槽在所述成型组件合模后具有外露的开口。
优选地，所述缓冲套为橡胶套。
优选地，所述收缩缝的长度大于所述缓冲套的长度。
为实现上述第二个目的，本发明提供了一种环状成型装置使用方法，包括步骤：
在各个压模用于围成空腔的侧壁上涂抹脱模剂，其中一个压模为静模，其余压模为动模，各个动模向静模移动实现合模；
预热压电陶瓷片至压电陶瓷片软化，将压电陶瓷片置于静模成型面上；
将组装好的中承组件压在压电陶瓷片上，使压电陶瓷片贴合静模成型面；
各个动模向静模靠拢合模将压电陶瓷片压成压电陶瓷环；
待压电陶瓷环冷却后，依次拆除中承组件的中心杆、中承管以及缓冲套。
优选地，取出中承组件后，还包括步骤：
向压电陶瓷环中灌入背衬材料制备环状换能器；
待背衬材料冷却后拆开成型组件的各个压模。
综上所述，本发明提供的一种环状成型装置包括成型组件以及中承组件，其中，成型组件包括多个压模，各个压模能够相互配合围成空腔；中承组件包 括中承管、中心杆以及缓冲套，中承管包括收缩结构，收缩结构包括多个沿中承管长度方向开设且周向分布的收缩缝，中心杆可拆卸地插入中承管中并将收缩结构涨紧，即将中心杆从中承管中抽出时，由于失去支撑，中承管的收缩结构能够向中承管轴线方向收缩以便于脱模，缓冲套用于将压电陶瓷片于收缩缝隔离，使产品形成平整光滑的内表面，并在拆模时对产品进行缓冲保护，该缓冲套可拆卸地紧箍于收缩结构外；成型组件合模时，各个压模与缓冲套之间的间隙构成用于成型产品的环状型腔；
在应用时，首先在各个压模用于围成空腔的侧壁上涂抹脱模剂以便于脱模，加热压电陶瓷片至其软化，然后将压电陶瓷片置于其中一个压模涂抹有脱模剂成型面上，随后将组装好的中承组件压在压电陶瓷片上，使压电陶瓷片贴合该成型面；其余压模靠拢合模将压电陶瓷片压在中承组件上形成压电陶瓷环；待压电陶瓷环冷却后，依次拆除中承组件的中心杆、中承管以及缓冲套；由此可见，在使用上述环状成型装置时，通过多个压模在中承组件周围合拢，能够将一片压电陶瓷片压成环形结构，从而相对于现有制造方式减少一条接痕，保证压电陶瓷环的使用效果，同时，压制一片压电陶瓷片形成压电陶瓷环不容易错位，有助于提高压电陶瓷环的质量。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的环状成型装置合模时的轴测图；
图2为本发明实施例提供的环状成型装置的爆炸图；
图3为本发明实施例提供的中承组件的轴测图；
图4为本发明实施例提供的中承组件的中承管的轴测图；
图5为本发明实施例提供的中承组件的中心杆的轴测图；
图6为本发明实施例提供的环状成型装置使用方法中中承组件将压电陶瓷片压向其中一个压模的示意图；
图7为本发明实施例提供的环状成型装置使用方法中中承组件将压电陶瓷片压在其中一个压模的成型面上的示意图；
图8为本发明实施例提供的环状成型装置使用方法中合模后的结构示意图；
图9为本发明实施例提供的环状成型装置使用方法中拆除中心杆后的结构示意图；
图10为本发明实施例提供的环状成型装置使用方法中拆除中承管后的结构示意图；
图11为本发明实施例提供的环状成型装置使用方法中拆除缓冲套后的结构示意图。
其中，1为成型组件；100为开模槽；110为上压模；111为上成型腔；112为第一台阶槽；113为螺纹孔；120为下压模；121为下成型腔；122为第二台阶槽；123为第二弧形台阶面；2为中承组件；210为中心杆；211为操作把手；212为光杆段；213为螺纹段；214为锥杆段；220为中承管；221为收缩管段；222为连接管段；223为收缩缝；224为锥管段；230为缓冲套。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1-图3，图1为本发明实施例提供的环状成型装置合模时的轴测图，图2为本发明实施例提供的环状成型装置的爆炸图，图3为本发明实施例提供的中承组件的轴测图。
本发明实施例提供了一种环状成型装置，包括成型组件1以及中承组件2。
其中，成型组件1包括多个压模，各个压模能够相互配合围成空腔；中承组件2包括中承管220、中心杆210以及缓冲套230，中承管220包括收缩结构，收缩结构包括多个沿中承管220长度方向开设且周向分布的收缩缝223，中心杆210可拆卸地插入中承管220中并将收缩结构涨紧，即将中心杆210 从中承管220中抽出时，由于失去支撑，中承管220的收缩结构能够向中承管220轴线方向收缩以便于脱模，缓冲套230用于将压电陶瓷片于收缩缝223隔离，使产品形成平整光滑的内表面，并在拆模时对产品进行缓冲保护，该缓冲套230可拆卸地紧箍于收缩结构外；成型组件1合模时，各个压模与缓冲套230之间的间隙构成用于成型产品的环状型腔。
综上所述，与现有技术相比，本发明实施例提供的一种环状成型装置在应用时，首先在各个压模用于围成空腔的侧壁上涂抹脱模剂以便于脱模，加热压电陶瓷片至其软化，然后将压电陶瓷片置于其中一个压模涂抹有脱模剂成型面上，随后将组装好的中承组件2压在压电陶瓷片上，使压电陶瓷片贴合该成型面；其余压模靠拢合模将压电陶瓷片压在中承组件2上形成压电陶瓷环；待压电陶瓷环冷却后，依次拆除中承组件2的中心杆210、中承管220以及缓冲套230；由此可见，在使用上述环状成型装置时，通过多个压模在中承组件2周围合拢，能够将一片压电陶瓷片压成环形结构，从而相对于现有制造方式减少一条接痕，保证压电陶瓷环的使用效果，同时，压制一片压电陶瓷片形成压电陶瓷环不容易错位，有助于提高压电陶瓷环的质量。
在图1-图3所示的实施例中，成型组件1的空腔为圆柱形，中承组件2的外表面也为圆柱形，两者配合形成的产品的横截面为圆环形，而在其他的实施例中，也可以采用其他的形状比如方形、椭圆形等等，中承组件2的内腔形状可与中承组件2的轮廓形状相同或不同。
中承管220与中心杆210可以采用插接配合的方式，但可以理解的是，在压模合模压紧的情况下，插接配合的中承管220以及中心杆210很难分开，而形成压片陶瓷环仅仅是制造环形换能器的一个步骤，后面还需要在不拆模的情况下向压片陶瓷环内灌注背衬材料，因此若在生产过程中采用上述不拆模灌注背衬材料的方式，则一般中承管220与中心杆210不采用插接配合的方式，而是采用螺纹配合的方式，中承管220与中心杆210与螺纹配合一方面可以保证中承管220与中心杆210的紧密配合，另一方面在压电陶瓷环成型冷却后，通过转动中心杆210，可借助中心杆210与中承管220之间的螺纹配合的推力退出中承管220，便于在不拆模的情况下取出中承组件2。
作为优选地，请参阅图4，中承管220包括相互连接的连接管段222以及 收缩管段221，收缩缝223开设于收缩管段221，中心杆210包括螺纹段213以及光杆段212，其中，螺纹段213用于与连接管段222配合，光杆段212用于与收缩管段221配合，在图4所示实施例中，螺纹段213设置有外螺纹，连接管段222设置有内螺纹，而在其他实施例中，也可以螺纹段213设置有内螺纹，连接管段222设置有外螺纹。
进一步优化上述技术方案，如图4和图5所示，中承管220还包括锥管段224，锥管段224的大端与收缩管段221连接，收缩管段221上的收缩缝223延伸至锥管段224，锥管段224的小端与连接管段222连接，中心杆210包括连接于螺纹段213以及光杆段212之间的锥杆段214，锥杆段214的小端与螺纹段213连接，锥管段224的大端与光杆段212连接，在使用时，通过锥杆段214与锥管段224之间的锥面配合，能够保证中心杆210将收缩管段221涨紧，这种锥面配合涨紧的方式对精度的要求更低，效果更好。
为便于中承组件2的拆分，如图5所示，中心杆210的一端设置有操作把手211。
作为优选地，成型组件1的空腔的侧壁上形成有定位台阶面，定位台阶面与环状型腔轴线垂直，如图1和图2所示，在本发明一具体实施例中，成型组件1包括上压模110以及下压模120，上压模110的上成型腔111内设置有第一弧形台阶面(图中未示出)，下压模120的下成型腔121内设置有第二弧形台阶面123，上成型腔111与下成型腔121围成空腔，第一弧形台阶面与第二弧形台阶面123对接形成用于定位压电陶瓷环的定位台阶面，在拆除中承组件2的中承管220时，定位台阶面能够对压电陶瓷环进行定位，防止其移位。
成型组件1中的各个压模之间可采用卡接的方式相对固定，也可以采用连接件连接的方式相对固定，在本发明中，优选采用螺纹紧固件将相邻两个压模锁紧，具体地，如图1和图2所示，上压模110以及下压模120在对应的位置上分别设置有螺纹孔113，螺纹紧固件分别与上压模110以及下压模120的螺纹孔113配合将上压模110与下压模120锁紧，进一步地，上压模110以及下压模120上分别至少设置有两个螺纹孔113，且同一个压模上的至少两个螺纹孔113在空腔两侧对称分布。
进一步优化上述技术方案，为便于拆模，可在至少一个压模的合模面上设 置开模槽100，开模槽100在成型组件1合模后具有外露的开口，该开口用于插入螺丝刀等工具将相邻两个压模拆开，具体如图2所示，上压模110的合模面上设置有第一台阶槽112，下压模120的合模面上设置有第二台阶槽122，上压模110与下压模120合模时，第一台阶槽112与第二台阶槽122相互配合围成开模槽100。
可以理解的是，为起到缓冲以及便于拆模的作用，缓冲套230应当使用具有一定弹性的材料制作，在本发明一种具体实施例中，缓冲套230为橡胶套。
进一步优化上述技术方案，在本发明一种具体实施例中，收缩缝223的长度大于缓冲套230的长度。
为实现上述第二个目的，本发明提供了一种上述环状成型装置的使用方法，该方法包括步骤：
S101：在各个压模用于围成空腔的侧壁上涂抹脱模剂，其中一个压模为静模，其余压模为动模，各个动模向静模移动实现合模；
在本发明实施例中，脱模剂为蜡，在使用时，首先将各压模加热，然后在其成型面上放置蜡块，待蜡块液化后涂抹均匀，当然蜡仅仅是本发明实施例提供的一种优选实施方案，实际并不局限于此，还可以采用其他的脱模剂，在此不作限定；本发明实施例中，如图6所示，以下压模120作为静模，上压模110作为动模。
S102：预热压电陶瓷片至压电陶瓷片软化，将压电陶瓷片置于静模成型面上；
为便于压电陶瓷片的弯曲成型，需要向对其进行加热，使其软化，然后再将其置于静模的成型面上。
S103：将组装好的中承组件2压在压电陶瓷片上，使压电陶瓷片贴合静模成型面；
组装好的中承组件2指中心杆210与中承管220紧密配合将中承管220涨紧，缓冲套230套在中承管220的收缩管段221上，起到隔离和缓冲的作用，如图7所示。
S104：各个动模向静模靠拢合模将压电陶瓷片压成压电陶瓷环；
如图8所示，上压模110与下压模120合拢，将压电陶瓷片压紧在中承组 件2的缓冲套230上，使压电陶瓷片形成环形。
S105：待压电陶瓷环冷却后，依次拆除中承组件2的中心杆210、中承管220以及缓冲套230。
如图9-图11所示。
进一步优化上述技术方案，取出中承组件2后，还包括步骤：
S106：向压电陶瓷环中灌入背衬材料制备环状换能器；
S107：待背衬材料冷却后拆开成型组件1的各个压模。
通过上述方法能够实现不拆模的情况下灌注背衬，便于环形换能器的生产制造。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (12)

  1. 一种环状成型装置，其特征在于，包括：
    成型组件，包括多个压模，各个所述压模能够相互配合围成空腔；
    中承组件，包括中承管、中心杆以及缓冲套，所述中承管包括收缩结构，所述收缩结构包括多个沿所述中承管长度方向开设且周向分布的收缩缝，所述中心杆可拆卸地插入所述中承管中并将所述收缩结构涨紧，所述缓冲套可拆卸地紧箍于所述收缩结构外；
    所述成型组件合模时，各个所述压模与所述缓冲套之间的间隙构成环状型腔。
  2. 根据权利要求1所述的环状成型装置，其特征在于，所述中承管与所述中心杆螺纹配合。
  3. 根据权利要求2所述的环状成型装置，其特征在于，所述中承管包括相互连接的连接管段以及收缩管段，所述收缩缝开设于所述收缩管段，所述中心杆包括用于与所述连接管段配合的螺纹段以及用于与所述收缩管段配合的光杆段。
  4. 根据权利要求3所述的环状成型装置，其特征在于，所述中承管还包括锥管段，所述锥管段的大端与所述收缩管段连接，所述锥管段的小端与所述连接管段连接，所述中心杆包括连接于所述螺纹段以及所述光杆段之间的锥杆段，所述锥杆段的小端与所述螺纹段连接，所述锥管段的大端与所述光杆段连接。
  5. 根据权利要求2-4任意一项所述的环状成型装置，其特征在于，所述中心杆的一端设置有操作把手。
  6. 根据权利要求1-4任意一项所述的环状成型装置，其特征在于，所述空腔的侧壁上形成有定位台阶面，所述定位台阶面与所述环状型腔轴线垂直。
  7. 根据权利要求1-4任意一项所述的环状成型装置，其特征在于，相邻两个所述压模之间通过螺纹紧固件锁紧。
  8. 根据权利要求1-4任意一项所述的环状成型装置，其特征在于，至少一个所述压模的合模面上设置有开模槽，所述开模槽在所述成型组件合模后具 有外露的开口。
  9. 根据权利要求1-4任意一项所述的环状成型装置，其特征在于，所述缓冲套为橡胶套。
  10. 根据权利要求1-4任意一项所述的环状成型装置，其特征在于，所述收缩缝的长度大于所述缓冲套的长度。
  11. 一种环状成型装置使用方法，其特征在于，包括步骤：
    在各个压模用于围成空腔的侧壁上涂抹脱模剂，其中一个压模为静模，其余压模为动模，各个动模向静模移动实现合模；
    预热压电陶瓷片至压电陶瓷片软化，将压电陶瓷片置于静模成型面上；
    将组装好的中承组件压在压电陶瓷片上，使压电陶瓷片贴合静模成型面；
    各个动模向静模靠拢合模将压电陶瓷片压成压电陶瓷环；
    待压电陶瓷环冷却后，依次拆除中承组件的中心杆、中承管以及缓冲套。
  12. 根据权利要求11所述的环状成型装置使用方法，其特征在于，取出中承组件后，还包括步骤：
    向压电陶瓷环中灌入背衬材料制备环状换能器；
    待背衬材料冷却后拆开成型组件的各个压模。
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