阅读说明：本技术 带光电采样装置的透明视窗及其加工方法和专用仪表 (Transparent window with photoelectric sampling device and its processing method and special instrument ) 是由 刘文奇 朱晓艳 姚素娜 张艳 陈国涛 李彦宏 陈姝颖 于 2021-07-30 设计创作，主要内容包括：本发明公开了一种带光电采样装置的透明视窗及其加工方法和专用仪表,其属于光电采样仪表领域。它主要包括视窗本体,视窗本体采用透明塑料制作而成,视窗本体内部设有光电采样装置,光电采样装置的绝缘导线伸出视窗本体,光电采样装置与光电采样指针配合。本发明将光电检测装置与透明塑料材质的视窗进行有效结合,通过注塑工艺加工成一个整体,不需要再做防水和耐压处理,故障率大大降低,同时节约成本,更便于光电仪表的批量生产和推广。本发明主要用于光电采样仪表。(The invention discloses a transparent window with a photoelectric sampling device, a processing method thereof and a special instrument, and belongs to the field of photoelectric sampling instruments. The window mainly comprises a window body, wherein the window body is made of transparent plastic, a photoelectric sampling device is arranged inside the window body, an insulated wire of the photoelectric sampling device extends out of the window body, and the photoelectric sampling device is matched with a photoelectric sampling pointer. The photoelectric detection device and the window made of the transparent plastic material are effectively combined and processed into a whole through an injection molding process, waterproof and pressure-resistant treatment is not needed, the failure rate is greatly reduced, the cost is saved, and batch production and popularization of the photoelectric instrument are facilitated. The invention is mainly used for photoelectric sampling instruments.)

1. The utility model provides a take photoelectric sampling device's transparent window, includes window body (1), its characterized in that: the window body (1) is made of transparent plastic, the photoelectric sampling device (3) is arranged inside the window body (1), an insulated wire of the photoelectric sampling device (3) extends out of the window body (1), and the photoelectric sampling device (3) is matched with the photoelectric sampling pointer (4).

2. The transparent window with an optoelectronic sampling device of claim 1, wherein: the photoelectric sampling device (3) is arranged inside the window body (1) through injection molding.

3. The transparent window with an optoelectronic sampling device of claim 2, wherein: the inside modulation and demodulation circuit module (7) that is equipped with through moulding plastics of window body (1), photoelectricity sampling device (3) are connected with modulation and demodulation circuit module (7).

4. The utility model provides a take special instrument of transparent window of photoelectric sampling device, includes instrument body (8), is equipped with dial plate (5), its characterized in that in instrument body (8): the instrument body (8) is provided with the transparent window with the photoelectric sampling device as claimed in any one of claims 1 to 3, the photoelectric sampling pointer (4) corresponding to the photoelectric sampling device (3) is arranged below the window body (1), and the photoelectric sampling pointer (4) is rotatably connected with the dial (5).

5. The special instrument with the transparent window of the photoelectric sampling device as claimed in claim 4, wherein: the photoelectric sampling device (3) is connected with the sampling device through an insulated wire and a signal conversion device.

6. A processing method of a transparent window with a photoelectric sampling device is characterized in that: the method comprises the following steps:

s1 manufacturing a window body: a window body (1) with a mounting groove (2) is manufactured by adopting transparent plastic through an injection molding process;

s2 pretreatment: coating a heat insulation coating on the outside of the electronic component to be injection-molded, wherein the thickness of the heat insulation coating is 0.5-5mm, the electronic component to be injection-molded is a photoelectric sampling device (3), and repeated operation can be carried out for multiple times according to the heat insulation requirement of the electronic component to be injection-molded;

s3 primary injection molding: performing a small amount of injection molding on the periphery of the electronic component subjected to the heat insulation treatment in the step 2, wherein the injection molding thickness is 1-10mm, and repeated operation can be performed for many times according to the heat insulation requirement of the electronic component;

s4 assembling: placing a small amount of injection-molded electronic components in the step 3 into the mounting groove (2) of the window body (1) in the step 1;

s5 heat sealing or secondary injection molding: and (4) processing the electronic component in the step (4) and the window body (1) into a whole through a secondary injection molding or heat sealing process.

7. The method for processing the transparent window with the photoelectric sampling device according to claim 6, wherein: the mounting groove (2) on the window body (1) in the step (1) has a certain shape, and the injection molding shape and size of the electronic component in the step (3) correspond to those of the mounting groove (2).

8. The method for processing the transparent window with the photoelectric sampling device according to claim 7, wherein: and the step 5 is a heat sealing process.

9. The method for processing the transparent window with the photoelectric sampling device according to any one of claims 6 to 8, wherein: the electronic component to be injection-molded in the step 2 further comprises a modulation and demodulation circuit module (7), and the modulation and demodulation circuit module (7) is connected with the photoelectric sampling device (3).

10. The method for processing the transparent window with the photoelectric sampling device according to claim 9, wherein: the other end of the insulated wire of the photoelectric sampling device (3) extends out of the window body (1).

Technical Field

The invention belongs to the field of photoelectric sampling instruments, and particularly relates to a transparent window with a photoelectric sampling device, a processing method of the transparent window and a special instrument.

Background

The photoelectric sampling instrument is mainly characterized in that reaction areas with different reflection or transmission intensities for light are additionally arranged on a rotating pointer of the instrument, so that the photoelectric sampling instrument can count the areas with different reflection or transmission intensities. The photoelectric sampling instrument converts the mechanical rotation of the pointer into a photoelectric pulse signal. In order to convert mechanical detection rotation into photoelectric pulse signals, the applicant provided a transmission-type photoelectric water meter and a special pointer thereof in the earlier stage, see CN210533465U for details, wherein the pointer needs to be matched with a photoelectric detection device arranged on a dial plate for use; this method has the following defects in the actual production process: 1. the photoelectric detection device is arranged below the instrument glass window, waterproof and pressure-resistant treatment needs to be carried out on the photoelectric detection device, the process requirement is high, the failure rate of finished products is high, and the maintenance and the repair are difficult, so that the instrument production cost is high, and the mass production and the popularization are difficult; 2. if a reflective instrument pointer for photoelectric sampling is adopted, see CN2014203124618 in detail, and then the photoelectric sampling device is arranged above the instrument glass window, many anti-cheating devices are also required to be added, and the experimental effect is not ideal; 3. the existing instrument window is usually a glass window, the impact resistance of the instrument window is poor, the frost cracking phenomenon is easy to occur in winter, and the maintenance and the replacement are time-consuming and labor-consuming.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, and the transparent window with the photoelectric sampling device, the processing method and the special instrument are provided, wherein the photoelectric detection device is effectively combined with the window made of the transparent plastic material, the window is processed into a whole through an injection molding process, waterproof and pressure-resistant treatment is not needed, the failure rate is greatly reduced, the cost is saved, and batch production and popularization of the photoelectric instrument are facilitated.

Take photoelectric sampling device's transparent window, including the window body, the window body adopts transparent plastic to make and forms, the inside photoelectric sampling device that is equipped with of window body, photoelectric sampling device's insulated wire stretches out the window body, photoelectric sampling device and the cooperation of photoelectric sampling pointer. The photoelectric sampling device is embedded into the window body, so that the medium is isolated from the photoelectric sampling device, and the sealing and pressure-resistant effects are achieved; meanwhile, the window body made of transparent plastic has high impact resistance, is not easy to freeze and crack and has long service life.

Preferably, the photoelectric sampling device is arranged inside the window body through injection molding.

Preferably, the interior of the window body is provided with a modulation and demodulation circuit module through injection molding, and the photoelectric sampling device is connected with the modulation and demodulation circuit module. The modulation and demodulation circuit module is matched with the photoelectric sampling device, and can play a role in power saving and accurate counting.

The special instrument with the transparent window of the photoelectric sampling device comprises an instrument body, wherein a dial plate is arranged in the instrument body, the instrument body is provided with the transparent window with the photoelectric sampling device, a photoelectric sampling pointer corresponding to the photoelectric sampling device is arranged below the window body, and the photoelectric sampling pointer is rotatably connected with the dial plate. Through the transparent window with the photoelectric sampling device and the photoelectric sampling pointer, the assembly difficulty of the special instrument can be reduced, the processing efficiency is improved, batch processing and popularization are facilitated, the production cost is reduced, and maintenance and repair are facilitated.

Preferably, the photoelectric sampling device is connected with the sampling device through an insulated conducting wire and a signal conversion device,

the processing method of the transparent window with the photoelectric sampling device comprises the following steps:

s1 manufacturing a window body: manufacturing a window body with a mounting groove by adopting transparent plastic through an injection molding process;

s2 pretreatment: coating a heat insulation coating on the outside of the electronic component to be injection-molded, wherein the thickness of the heat insulation coating is 0.5-5mm, the electronic component to be injection-molded is a photoelectric sampling device, and repeated operation can be carried out for many times according to the heat insulation requirement of the electronic component to be injection-molded; the thicker the heat insulation coating is, the smaller the heat transferred into the electronic component at the same time is;

s3 primary injection molding: performing a small amount of injection molding on the periphery of the electronic component subjected to the heat insulation treatment in the step 2, wherein the injection molding thickness is 1-10mm, repeated operation can be performed for multiple times according to the heat insulation requirement of the electronic component, and the thinner the injection molding thickness is, the smaller the heat transferred into the electronic component at the same time is;

s4 assembling: placing a small amount of injection-molded electronic components in the step 3 into the mounting groove of the window body in the step 1;

s5 heat sealing or secondary injection molding: and (4) processing the electronic component in the step (4) and the window body into a whole through a secondary injection molding or heat sealing process, embedding the electronic component in the window body through the secondary injection molding or heat sealing process, and meeting the sealing and pressure-resistant requirements of the instrument.

Preferably, the mounting groove on the window body in the step 1 has a certain shape, and the injection molding shape and size of the electronic component in the step 3 correspond to the mounting groove.

Preferably, the step 5 is a heat sealing process.

Preferably, the electronic component to be injection-molded in step 2 further includes a modulation and demodulation circuit module, and the modulation and demodulation circuit module is connected with the photoelectric sampling device.

Preferably, the other end of the insulated wire of the photoelectric sampling device extends out of the window body.

Compared with the prior art, the invention has the beneficial effects that:

1. the traditional glass window is improved into the window made of transparent plastic materials, so that the impact resistance and the stability of the transparent window are improved, and the service life of the transparent window is greatly prolonged;

2. the photoelectric sampling device and the modulation and demodulation circuit module are embedded in the transparent window through multiple times of injection molding, so that the photoelectric sampling effect of the instrument can be ensured, waterproof treatment and pressure-resistant treatment of electronic components such as the photoelectric sampling device and the modulation and demodulation circuit module are avoided, the use stability of the instrument is improved, a manufacturing process with high difficulty is omitted, the production cost is saved, the production efficiency is improved, and the mass production and popularization of the photoelectric sampling instrument are facilitated;

3. the maintenance and replacement are convenient, when the photoelectric sampling device is damaged, the transparent window can be directly replaced, and the convenience and the rapidness are realized;

4. because the highest use temperature of the electronic components is more than 40-120 ℃, the injection molding temperature of the instrument plastic transparent window is more than 160 ℃, in order to avoid direct injection molding exceeding the critical temperature of the electronic components, the transparent window is separately injected and reserved with a mounting groove, heat insulation treatment is firstly carried out outside the electronic components, then a small amount of injection molding is carried out, so that the damage of the electronic components is avoided, and finally the transparent window and the small amount of injected electronic components are processed into a whole through a secondary injection molding or heat sealing process, so that the aims of sealing and pressure resistance are fulfilled.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of an optoelectronic sampling pointer;

fig. 3 is a schematic structural diagram of the special instrument of the present invention.

In the figure, 1, a window body; 2. mounting grooves; 3. a photoelectric sampling device; 4. a photoelectric sampling pointer; 5. a dial plate; 6. a rotating shaft; 7. a modulation and demodulation circuit module; 8. the instrument body.

Detailed Description

The invention will be further described with reference to the accompanying drawings in which:

the first embodiment is as follows: as shown in fig. 1, the transparent window with the photoelectric sampling device comprises a window body 1, wherein the window body 1 is made of transparent plastics, a photoelectric sampling device 3 is arranged in the window body 1, an insulated wire of the photoelectric sampling device 3 extends out of the window body 1, and the photoelectric sampling device 3 is matched with a photoelectric sampling pointer 4; the photoelectric sampling device 3 is arranged inside the window body 1 through an injection molding process. During manufacturing, the shape of the window body 1 and the shape of the electric sampling pointer 4 are not established, and the photoelectric sampling device 3 can be vertical to or parallel to the photoelectric sampling pointer 4 and can also form a certain included angle with the electric sampling pointer 4.

Take special instrument of the transparent window of photoelectric sampling device, including instrument body 8, be equipped with dial plate 5 in the instrument body 8, be equipped with foretell transparent window of taking photoelectric sampling device 3 on the instrument body 8, 1 below of window body is equipped with the photoelectric sampling pointer 4 that corresponds with photoelectric sampling device 3, photoelectric sampling pointer 4 rotates through pivot 6 and dial plate 5 to be connected, photoelectric sampling device 3 is connected with sampling device through insulated wire and signal conversion device, sampling device adopts the singlechip to sample.

When the transparent plastic is manufactured, polymethyl methacrylate (PMMA), Polystyrene (PS), Polycarbonate (PC), styrene acrylonitrile (AS or SAN), styrene-methyl methacrylate copolymer (MS) and the like can be selected AS the transparent plastic, or a product prepared by adding a conditioning machine to the materials.

The processing method of the transparent window with the photoelectric sampling device comprises the following steps:

s1 manufacturing a window body: the window body 1 with the mounting groove 2 is manufactured by adopting any one of the transparent plastics through an injection molding process, the mounting groove 2 can be manufactured into a certain shape according to the requirement, and the shape can be a cuboid, a cube, a cylinder or a polygonal body and the like; the mounting groove 2 is used for placing electronic components and insulating wires, and the other end of the insulating wire extends out of the window body 1 so as to be connected with a connecting port of the sampling device;

s2 pretreatment: coating a heat insulation coating on the outside of the electronic component to be injection-molded, wherein the thickness of the heat insulation coating is 0.5-5mm, the electronic component to be injection-molded is a photoelectric sampling device 3, and repeated operation can be carried out for multiple times according to different heat insulation requirements;

s3 primary injection molding: performing a small amount of injection molding on the periphery of the electronic component subjected to the heat insulation treatment in the step 2, wherein the injection molding thickness is 1-10mm, and repeated operation can be performed for multiple times according to different heat insulation requirements;

s4 assembling: placing a small amount of injection-molded electronic components in the step 3 into the mounting groove 2 of the window body 1 in the step 1;

s5 secondary injection molding: and (4) processing the electronic component and the corresponding insulated conducting wire in the step (4) and the window body 1 into a whole through a secondary injection molding process, embedding the electronic component into the window body 1, wherein no gap exists between the electronic component and the window body 1, and the electronic component embedded into the window body 1 meets the requirements on sealing and pressure.

Example two: a modulation and demodulation circuit module 7 is further arranged inside the window body 1 through injection molding, and the photoelectric sampling device 3 is connected with the modulation and demodulation circuit module 7; the rest is the same as the first embodiment. In this embodiment, the modem circuit module 7 is added, and the modem circuit module 7 can effectively play a role in power saving and accurate counting.

In the method for processing the transparent window with the photoelectric sampling device, the electronic component to be injection-molded in the step 2 further comprises a modulation and demodulation circuit module 7, and the modulation and demodulation circuit module 7 is connected with the photoelectric sampling device 3; in the step 3, the injection molding shape and size of the electronic component correspond to those of the mounting groove 2; and 5, processing the electronic component and the window body 1 into a whole through a heat seal process. The insulated wire can resist the high temperature of more than 200 ℃, so the pretreatment and one-time injection molding process of the insulated wire can be omitted, and the rest is the same as the first embodiment.