Simple corrugated diaphragm stamping device

Abstract

The utility model discloses a simple corrugated diaphragm stamping device. The simple corrugated diaphragm stamping device comprises a base, a corrugated die, a locking ring and an O-shaped sealing ring. A circular groove is formed in the base, and a diaphragm blank is placed in the circular groove; an annular groove is formed in the base, the annular groove is formed in the periphery of the circular groove, the corrugated mold is arranged above the circular groove, the O-shaped sealing ring is arranged in the annular groove, and the O-shaped sealing ring is used for sealing the corrugated mold and the base; the locking ring is connected with the upper end face of the corrugated mold and the base. A pressure channel is formed in the base, and a pressurizing medium conducts stamping machining on the diaphragm blank through the pressure channel. The technical problems that wrinkles are prone to being generated in the diaphragm blank pressing process, sealing failure is prone to being caused by follow-up of a sealing ring, and then the forming quality of a corrugated diaphragm is affected are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to corrugated diaphragm stamping field relates to a simple corrugated diaphragm stamping device. BACKGROUND

[0002] Corrugated diaphragm mainly plays the role of isolation and protection in pressure sensor. It can isolate the medium to be measured from the sensor chip and prevent the chip from being corroded or damaged by the medium to be measured. At the same time, the corrugated diaphragm can also transmit the pressure of the medium to be measured to the sensor chip, so that the chip can perceive the change of pressure.

[0003] The traditional corrugated diaphragm is mainly made by mechanical stamping technology. The metal strip (such as stainless steel strip) is stamped into the required corrugated diaphragm shape by applying pressure to the die by the stamping machine. The configuration of the stamping machine needs to be accurately adjusted according to the size, shape and material thickness of the corrugated diaphragm to ensure that the stamped diaphragm can meet the design requirements. Since the precision and durability of the die are required to be high, the manufacturing cost is large.

[0004] In addition, the utilization rate of metal plate is often not high during stamping, resulting in a large amount of waste and corner material, which not only wastes resources but also increases production cost. Moreover, the traditional stamping technology is usually suitable for mass production, and its flexibility and efficiency are limited for small batch or customized diaphragm production.

[0005] In the prior art, the forming tool for corrugated diaphragm of pressure reducing valve disclosed in Chinese utility model patent CN203330214U is used for processing corrugated diaphragm for pressure reducing valve. The structure adopts a two-end design of base and upper module. The diaphragm blank is pressed between the annular sealing ring and the upper module. The annular sealing ring directly acts on the diaphragm blank, and the annular sealing ring moves up with the diaphragm. First, the locking process will cause the diaphragm to wrinkle. The above device uses diaphragm and O-ring sealing, and the diaphragm will wrinkle under pressure. In addition, the sealing principle of O-ring is extrusion, but in the sealing mode used, the diaphragm and O-ring move up together, which may cause sealing failure, resulting in the failure of corrugation forming. UTILITY MODEL CONTENTS

[0006] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a simple corrugated diaphragm stamping device to solve the technical problem that the diaphragm blank is prone to wrinkle during pressing, and the sealing ring is prone to sealing failure, which affects the forming quality of the corrugated diaphragm.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a simple corrugated diaphragm stamping device, including base, corrugated mould, locking ring and O type sealing washer,

[0009] The circular recess is used for placing the diaphragm blank, the annular recess is arranged at the periphery of the circular recess, the corrugated mould is arranged above the circular recess, the O type sealing washer is arranged in the annular recess, and the O type sealing washer is used for sealing the corrugated mould and the base, the locking ring is connected with the upper end surface of the corrugated mould and the base, and the pressure channel is arranged on the base.

[0010] In an embodiment, a gap is left between the diaphragm blank in the base and the corrugated mould.

[0011] In an embodiment, the inner diameter of the O type sealing washer is greater than the inner diameter of the annular recess, the outer diameter of the O type sealing washer is less than the outer diameter of the annular recess, and the depth of the annular recess is less than the diameter of the O type sealing washer.

[0012] In an embodiment, the locking ring is pressed downward to compress the O type sealing washer for sealing during stamping.

[0013] In an embodiment, the lower end surface of the corrugated mould is provided with corrugations, and the corrugations are used for forming corrugations on the corrugated diaphragm.

[0014] In an embodiment, the outlet of the pressure channel is communicated with the circular recess.

[0015] In an embodiment, the locking ring is screw-connected with the base.

[0016] In an embodiment, the pressurizing medium is a liquid medium or a gas medium.

[0017] In an embodiment, the base is screw-connected with a pressurizing device.

[0018] In an embodiment, an annular groove is arranged on the corrugated mould.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model provides a simple corrugated diaphragm stamping device adopts the three -section type design of base, corrugated mould, locking ring and O type sealing ring. After the diaphragm blank is put in, the corrugated mould is positioned on the base first, and the corrugated mould is pressed first and then locked by the locking ring, instead of directly pressing the diaphragm, to avoid the wrinkle generated in the diaphragm pressing process. The three -section type design avoids directly pressing the diaphragm, reduces the risk of diaphragm surface damage. The separate positioning and pressing of the corrugated mould ensure the stability of the diaphragm in the stamping process. In addition, the O type sealing ring is arranged in the annular groove of the base, does not directly act on the diaphragm blank, but generates a sealing effect by the locking ring pressing, and the locking ring extrudes the sealing ring, which has no influence on the diaphragm forming, avoids the wrinkle problem caused by the direct extrusion of the sealing ring on the diaphragm, and ensures the sealing effect, because the O type sealing ring is compressed under the action of the locking ring, forming effective sealing. The locking ring is specially used for pressing the corrugated mould and the O type sealing ring, ensuring that the mould does not displace in the stamping process, and the locking ring does not contact the diaphragm blank, effectively preventing the displacement of the mould in the stamping process, and avoiding the scratches or wrinkles caused by the direct contact of the locking part with the diaphragm.

[0021] Further, the pressurizing medium is pressed to the diaphragm blank through the pressure channel, the O type sealing ring is in the annular groove of the base and does not move with the diaphragm, the O type sealing ring keeps sealing under the action of the locking ring, and the sealing effect is stable in the stamping process.

[0022] Further, the annular groove is arranged on the corrugated mould, the corrugated mould can be directly taken out of the base through the annular groove after stamping, the corrugated diaphragm can be taken out by inverting the base, the demolding process is simplified, and the damage risk of the corrugated diaphragm in the demolding process is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structure diagram of the corrugated diaphragm stamping device of the utility model;

[0024] Figure 2 It is a detail view of the diaphragm blank of the utility model;

[0025] Wherein: 1 - base;2 - diaphragm blank;3 - O type sealing ring;4 - corrugated mould;5 - locking ring;6 - annular groove;7 - circular groove;8 - annular groove. DETAILED DESCRIPTION

[0026] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0027] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] The present application will be described in further detail below in conjunction with the drawings:

[0029] Referring to Figure 1 , the present application provides a simple corrugated diaphragm stamping device, which mainly consists of four parts of a base 1, a corrugated die 4, a locking ring 5 and an O-shaped sealing ring 3. The base 1 is provided with an annular groove 6 and a circular groove 7. The circular groove 7 is located at the center of the base 1, and the annular groove 6 is located at the periphery of the circular groove 7. The corrugated die 4 is provided with an annular groove 8.

[0030] The base 1 is provided with a circular groove 7 for placing a diaphragm blank 2. As shown in Figure 2 , the diaphragm blank 2 has a certain gap with the upper end corrugated die 4 after being placed in the base 1, so as to ensure the effective stroke during stamping of the diaphragm blank. The annular groove 6 of the base 1 is used for placing the O-shaped sealing ring 3. The inner diameter of the O-shaped sealing ring 3 is greater than the inner diameter of the annular groove 6, the outer diameter of the O-shaped sealing ring 3 is less than the outer diameter of the annular groove 6, and the depth of the annular groove 6 is less than the diameter of the O-shaped sealing ring 3.

[0031] The lower end surface of the corrugated die 4 is consistent with the corrugation to be prepared, and the upper end plane is connected with the locking ring 5 for limiting and preventing displacement of the corrugated die during stamping. The corrugated die 4 is sealed with the base 1 through the O-shaped sealing ring 3.

[0032] The locking ring 5 is connected with the base 1 through thread, after the diaphragm blank 2, the O-shaped sealing ring 3 and the corrugated mould 4 are loaded into the base, the locking ring 5 is pressed down, the O-shaped sealing ring 3 is compressed, so that the sealing property is guaranteed during stamping, the locking ring 5 does not contact the diaphragm blank 2 during pressing, the relative displacement of the corrugated mould 4 and the diaphragm blank 2 is avoided, and the scratch and wrinkle after stamping can be prevented.

[0033] The lower end of the base 1 is provided with thread and is connected with a pressurizing equipment through thread. During stamping, liquid (water) medium or gas medium is used to pressurize the diaphragm blank 2 end through the pressure channel of the base 1. After stamping, the locking ring 5 is taken out first, then the corrugated mould 4 is taken out from the base 1 through the annular groove 8 on the corrugated mould 4, and then the base 1 is inverted, and the corrugated diaphragm after stamping is taken out, so that the corrugated diaphragm is prevented from being damaged during demolding.

[0034] Specifically, the process of preparing the corrugated diaphragm by using the simple corrugated diaphragm stamping device is as follows:

[0035] Firstly, the diaphragm blank 2 is loaded into the circular groove 7 of the base 1 and is ensured to be closely attached to the base 1, the O-shaped sealing ring 3 is installed in the annular groove 6 of the base 1, then the corrugated mould 4 is vertically loaded into the base 1 and is ensured to be closely attached to the diaphragm blank 2, and then the locking ring 5 is loaded to press the corrugated mould 4.

[0036] During stamping, the whole device is connected on a liquid or gas pressure medium press through the thread of the base 1. According to the thickness of the diaphragm and the required corrugated shape, different pressure and pressure maintaining time are set, and after setting is completed, the pressurizing is started.

[0037] After stamping, the device is taken off from the press, the locking ring 5 is vertically taken out, the corrugated mould 4 is taken out from the base 1 through the annular groove 8 on the corrugated mould 4, then the base 1 is inverted, and the corrugated diaphragm after stamping is taken out from the base 1.

[0038] Embodiment

[0039] A simple corrugated diaphragm stamping device comprises the following components:

[0040] The base 1 is provided with a circular groove 7 for loading the diaphragm blank 2 and is provided with an annular groove 6 arranged at the periphery of the circular groove 7, and the base 1 is provided with a pressure channel communicated with the circular groove 7 for enabling the pressurizing medium to pass through and stamp the diaphragm blank 2; the base 1 is further provided with a pressurizing equipment connected through thread;

[0041] A corrugated mold 4 is arranged above the circular groove 7, and a corrugation is arranged on the lower end face of the corrugated mold 4, and the corrugated mold 4 is provided with an annular groove 8;

[0042] An O-shaped sealing ring 3 is arranged in the annular groove 6, and the O-shaped sealing ring 3 is used for sealing the corrugated mold 4 and the base 1; the inner diameter of the O-shaped sealing ring 3 is greater than the inner diameter of the annular groove 6, the outer diameter of the O-shaped sealing ring 3 is less than the outer diameter of the annular groove 6, and the depth of the annular groove 6 is less than the diameter of the O-shaped sealing ring 3;

[0043] A locking ring 5 is connected with the upper end face of the corrugated mold 4 and the base 1, and the O-shaped sealing ring 3 is compressed to be sealed by being pressed downward; the locking ring 5 is threadedly connected with the base 1.

[0044] The film blank 2 arranged in the base 1 is left with a gap between the corrugated mold 4; and the pressurizing medium is a liquid medium or a gas medium.

[0045] In summary, the simple corrugated diaphragm stamping device has a high yield, and compared with traditional mechanical stamping, liquid medium or gas medium is used for pressurizing, pressure can be uniformly applied, and uneven pressure that may occur in the traditional stamping process is avoided, so that the shape and size of the corrugated diaphragm are more stable and reliable. Moreover, the interchangeability is good, the corrugated mold can be customized according to actual needs, and is suitable for production of corrugated diaphragms of different specifications and shapes, and meets the needs of small-batch and customized production. The complex mold structure in the traditional stamping process is simplified, and the cost of mold manufacturing and maintenance is reduced. The base 1, the corrugated mold 4 and the locking ring 5 are all made of 316L stainless steel, and are easy to process. By accurately controlling the size and time of pressurizing, the corrugations after stamping have good consistency. Compared with the traditional mechanical stamping mode, the rebound of the corrugated diaphragm after stamping is small. Compared with the traditional mechanical stamping, the noise generated during the pressurizing process of the liquid medium or the gas medium is small, and no pollution and waste are generated in the production process.

[0046] The above content only illustrates the technical idea of the utility model, and cannot limit the protection scope of the utility model. Any modification made on the basis of the technical scheme according to the technical idea of the utility model falls within the protection scope of the utility model claim.

Claims

1. A simple bellows sheet punching device characterized by comprising: The base (1), the corrugated mold (4), the locking ring (5) and the O-shaped sealing ring (3) are included. The circular recess (7) is used for placing the diaphragm blank (2). The annular recess (6) is arranged on the outer periphery of the circular recess (7). The corrugated mold (4) is arranged above the circular recess (7). The O-shaped sealing ring (3) is arranged in the annular recess (6) and is used for sealing the corrugated mold (4) and the base (1). The locking ring (5) is connected with the upper end surface of the corrugated mold (4) and the base (1). The pressure channel is arranged on the base (1), and the pressurizing medium is punched to the diaphragm blank (2) through the pressure channel.

2. The simple corrugated diaphragm punching device according to claim 1, characterized in that, The diaphragm blank (2) placed in the base (1) leaves a gap with the corrugated mold (4).

3. The simple bellows diaphragm stamping device of claim 1, wherein, The inner diameter of the O-shaped sealing ring (3) is greater than the inner diameter of the annular recess (6), the outer diameter of the O-shaped sealing ring (3) is less than the outer diameter of the annular recess (6), and the depth of the annular recess (6) is less than the diameter of the O-shaped sealing ring (3).

4. The simple corrugated diaphragm punching device according to claim 1 or 3, characterized in that, During the punching process, the locking ring (5) is pressed downward to compress the O-shaped sealing ring (3) to seal.

5. The simple bellows diaphragm stamping device of claim 1, wherein, The lower end surface of the corrugated mold (4) is provided with corrugations, and the corrugations are used for processing corrugations on the corrugated diaphragm.

6. The simple bellows diaphragm stamping device of claim 1, wherein, The outlet of the pressure channel is communicated with the circular recess (7).

7. The simple bellows diaphragm stamping device of claim 1, wherein, The locking ring (5) is threadedly connected with the base (1).

8. The simple bellows diaphragm stamping device of claim 1, wherein, The pressurizing medium is a liquid medium or a gas medium.

9. The simple bellows diaphragm stamping device of claim 1, wherein, The base (1) is threadedly connected with the pressurizing equipment.

10. The simple corrugated diaphragm punching device according to claim 1, characterized in that, The annular groove (8) is arranged on the corrugated mold (4).

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