阅读说明：本技术 一种电子膨胀阀固定架 (Electronic expansion valve fixing frame ) 是由 曾庆军 江超 于 2018-03-23 设计创作，主要内容包括：本发明公开了一种电子膨胀阀固定架,用以将阀体部件和线圈部件固定连接,该固定架安装在所述阀体部件上,所述线圈部件上设有卡扣与该固定架配合,所述固定架包括设有开口的圆环形本体部和由该本体部向外延伸与卡扣配合的定位口,所述固定架上还设有伸出部,所述固定架以所述定位口的中心、所述本体部的圆心与所述本体部的开口形成的线为中心线两侧不对称,以使所述固定架在安装时冲压面朝外。本发明可以正确识别冲压面和落料面,并实现自动化安装,提高了安装效率。(The invention discloses a fixing frame of an electronic expansion valve, which is used for fixedly connecting a valve body part and a coil part, and is arranged on the valve body part, a buckle is arranged on the coil part to be matched with the fixing frame, the fixing frame comprises a circular body part with an opening and a positioning port which extends outwards from the body part and is matched with the buckle, the fixing frame is also provided with an extension part, and the two sides of the fixing frame are asymmetrical by taking the center of the positioning port, the circle center of the body part and the line formed by the opening of the body part as the center line, so that the stamping surface of the fixing frame faces outwards when the fixing frame is installed. The invention can correctly identify the stamping surface and the blanking surface, realizes automatic installation and improves the installation efficiency.)

1. The utility model provides an electronic expansion valve mount for with valve body part and coil part fixed connection, this mount is installed on the valve body part, be equipped with the buckle on the coil part and cooperate its characterized in that with this mount: the fixing frame comprises a circular ring-shaped body part with an opening and a positioning opening which extends outwards from the body part and is matched with the buckle, the fixing frame is also provided with a protruding part, and the two sides of the fixing frame are asymmetrical by taking the center of the positioning opening, the circle center of the body part and the line formed by the opening of the body part as central lines, so that the stamping surface of the fixing frame faces outwards when the fixing frame is installed.

2. The electronic expansion valve holder according to claim 1, wherein the positioning port is one.

3. The electronic expansion valve holder according to claim 1, wherein: the fixing frame is provided with a protruding part in an extending mode on one side of the opening, so that the gravity of one side of the center line of the fixing frame is larger than that of the other side of the center line of the fixing frame.

4. The electronic expansion valve holder according to claim 1, wherein: the fixing frame is provided with a protruding part extending from one side of the opening, so that the pattern of one side of the center line of the fixing frame is different from the pattern of the other side of the center line of the fixing frame.

5. The electronic expansion valve holder according to any one of claims 1 to 4, wherein: the buckle is provided with a spherical convex bubble, and the stamping surface faces outwards and is abutted against the spherical convex bubble when the fixing frame is installed.

6. The electronic expansion valve holder according to claim 4, wherein: the valve body component comprises an A connecting pipe, a B connecting pipe, a valve seat and a sleeve seat, wherein the A connecting pipe, the B connecting pipe, the valve seat and the sleeve seat are integrally welded by brazing in a furnace.

7. The electronic expansion valve holder according to claim 6, wherein: the sleeve seat and the fixing frame are made of stainless steel materials and are connected together through laser welding.

8. The electronic expansion valve holder according to claim 1, wherein the extension portion has a circular arc shape.

9. The electronic expansion valve holder according to claim 8, wherein the extension portion is co-circular with the body portion.

10. The electronic expansion valve fixing frame according to claim 1, wherein a blanking surface is further disposed on the fixing frame, and text or graphic marks are disposed on the stamping surface and/or the blanking surface.

Technical Field

The invention relates to the technical field of refrigeration air conditioners, in particular to a fixing frame for an electronic expansion valve.

Background

The electronic expansion valve for regulating refrigerant flow rate in refrigerating system of air conditioner includes valve body part and coil part, and can regulate the refrigerant flow rate of refrigerating system by means of driving valve needle opening and closing degree in the valve body part via the coil so as to reach the effect of controlling temperature.

In the prior art, a metal buckle is arranged on a coil, and the fixing effect of the coil is realized through the elastic pre-tightening action of the metal buckle and a fixing frame arranged on a valve body component. The fixing frame is generally formed by punching, as is well known, the punching process is divided into a punching surface and a blanking surface, the edge of a notch of the fixing frame on the punching surface is in arc transition which is naturally formed, the edge of the notch of the fixing frame on the blanking surface is in right-angle transition which is naturally formed and is usually accompanied with the generation of burrs, so that the fixing frame is divided into directions when being installed, and the punching surface of the fixing frame is required to be in contact with the buckles. However, the circular arc transition and the right-angle transition are not obvious enough, and the circular arc transition and the right-angle transition cannot be identified effectively and correctly in the automatic implementation process, so that the stamping surface and the blanking surface cannot be distinguished correctly, manual identification is only achieved, the efficiency is low, and the assembly quality is reduced if the distinction is wrong.

Disclosure of Invention

The invention aims to provide a fixing frame of an electronic expansion valve, which is convenient for correctly identifying the stamping surface and the blanking surface of the fixing frame in the automatic assembly process.

The fixing frame is used for fixedly connecting the valve body component and the coil component, the fixing frame is installed on the valve body component, a buckle is arranged on the coil component and matched with the fixing frame, the fixing frame comprises a circular ring-shaped body part with an opening and a positioning port which extends outwards from the body part and is matched with the buckle, a protruding part is further arranged on the fixing frame, and the fixing frame is asymmetric in two sides by taking the center of the positioning port, the circle center of the body part and the line formed by the opening of the body part as center lines, so that the fixing frame is outwards stamped when being installed.

Preferably, the positioning opening is one.

Preferably, the fixing frame is provided with a protruding part extending from one side of the opening, so that the gravity of the fixing frame on one side of the center line is greater than that on the other side.

Preferably, the fixing frame is provided with a protruding part extending from one side of the opening, so that the pattern of the fixing frame on one side of the center line is different from the pattern of the fixing frame on the other side.

Preferably, the buckle is provided with a spherical convex bubble, and the stamping surface faces outwards and is abutted against the spherical convex bubble when the fixing frame is installed.

Preferably, the valve body part comprises a connecting pipe A, a connecting pipe B, a valve seat and a sleeve seat, and the connecting pipe A, the connecting pipe B, the valve seat and the sleeve seat are integrally welded by brazing in a furnace.

Preferably, the sleeve seat and the fixing frame are made of stainless steel and are connected together through laser welding.

Preferably, the protruding portion is arc-shaped.

Preferably, the extension portion is co-circular with the body portion.

Preferably, the main body is provided with characters and/or patterns, and the characters and/or patterns are used for identifying the stamping surface of the electronic expansion valve fixing frame.

According to the technical scheme, the extending part is arranged on the fixing frame, and the two sides of the fixing frame are asymmetric by taking a line formed by the center of the positioning opening, the center of the body part and the opening of the body part as a central line, so that the stamping surface of the fixing frame faces outwards when the fixing frame is installed. In the automatic feeding process, the stamping surface and the blanking surface can be correctly identified, automatic installation is realized, installation personnel are reduced, and the installation efficiency is improved.

Drawings

The invention is further described with reference to the accompanying drawings and the detailed description below:

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

FIG. 2 is a top view of a mount having three positioning ports;

FIG. 3 is a front view of a mount having three positioning ports;

FIG. 4 is an enlarged schematic view at I of FIG. 3;

FIG. 5 is a schematic diagram of a method for screening a fixing frame by image comparison;

FIG. 6 is a schematic illustration of screening a mount using gravity center selection;

fig. 7 is a top view of a mounting bracket having a positioning opening.

Detailed Description

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

In a preferred embodiment of the present invention, as shown in fig. 1, a fixing frame for an electronic expansion valve includes a valve body component and a coil component, wherein the valve body component is provided with a fixing frame 4, and the coil component is provided with a coil 5 and a buckle 2 clamped with the fixing frame 4. The valve body part comprises an A connecting pipe 7, a B connecting pipe 1, a valve seat 3 and a sleeve seat 6, wherein the A connecting pipe 7, the B connecting pipe 1, the valve seat 3 and the sleeve seat 6 are integrally welded by brazing in a furnace, and the sleeve seat 6 and the fixing frame 4 are made of stainless steel and are connected together through laser welding so as to facilitate the assembly of the valve body part.

Referring to fig. 2 to 4 and 7, the fixing frame 4 is a sheet-shaped body formed by metal punch forming, so that a punching surface and a blanking surface are naturally formed after punching, an arc transition 4a is naturally formed at the edge of a notch of the fixing frame on the punching surface, and a right-angle transition 4b is naturally formed at the edge of the notch of the fixing frame on the blanking surface. Buckle 2 is equipped with the protruding bubble of ball-type, and during the installation, the punching press face of mount 4 outwards offsets with the protruding bubble of ball-type on the buckle 2, and convenient smooth installation is used to burr and the 2 effects of buckle on avoiding blanking surface right angle transition 4b avoid the installation not in the same direction as, send out the card scheduling problem. When the electronic expansion valve is assembled, the B connecting pipe 1, the A connecting pipe 7, the valve seat 3 and the sleeve seat 6 are brazed and welded together in a furnace, then the valve core assembly is completed, and finally an automatic mechanism is utilized to carry out directional screening on the fixing frame 4, so that the punched surface is enabled to be outwards abutted against the spherical convex bubble on the buckle 2 on the coil component after the installation.

Referring to fig. 2 and 7, the fixing frame 4 is a circular ring with an opening, and the fixing frame 4 is provided with at least one positioning opening matched with the buckle along the outer circle side of the circular ring. The installation of the fixing frame 4 can be facilitated through the arrangement of the opening.

In the embodiment shown in fig. 2, the fixing frame 4 is provided with a first positioning opening 4c, a second positioning opening 4d and a third positioning opening 4e, a central line 4g of a horizontal projection plane of the fixing frame is set to pass through the opening and the first positioning opening 4c, the second positioning opening 4d and the third positioning opening 4e are symmetrically distributed on two sides of the central line 4g of the fixing frame, the fixing frame is connected with the coil component through the plurality of positioning openings, and the connection reliability is ensured.

In order to conveniently and correctly distinguish the stamping surface and the blanking surface, thereby facilitating the installation of the fixing frame 4, the invention adopts the technical scheme that: the fixing frame 4 is provided with a protruding part 4f at one side of the opening, and the protruding part 4f is not arranged at the other side of the opening, so that the gravity of the fixing frame 4 at one side of the center line 4g is greater than that at the other side, that is, the gravity centers at two sides of the center line 4g are asymmetrically distributed. The protruding portion 4f may be formed such that the centers of gravity of both sides of the center line 4g are asymmetrically distributed, and the pattern of the holder 4 on one side of the center line 4g may be distinguished from the pattern on the other side.

The following is a detailed description of how the protrusion 4f provided according to the present invention automatically distinguishes between the punching surface and the blanking surface of the holder.

Referring to fig. 5, the fixing frame 4 moves along the guide rail in the direction shown in the figure under the action of external force, wherein F is a target image preset in the system, D is an image detection position, a camera is arranged right above D, the fixing frame at D is photographed, the system compares the photographed image with the target image F, if the degree of coincidence reaches a preset target value, the direction of the fixing frame at D is determined to be correct, the stop lever I is cancelled, the fixing frame smoothly passes through the position E, and if the degree of coincidence does not reach the preset target value, the direction of the fixing frame at D is determined to be wrong, the discharging stop lever H is started, and the fixing frame is discharged from the discharging port; and (4) withdrawing the stop lever G, enabling the fixing frame at the position C to smoothly reach the position D, judging the next fixing frame, and sequentially circulating to finish the direction selection of the fixed frame to be detected. As can be seen from fig. 5, the direction of the C-position fixing frame is not consistent with the directions of the other position fixing frames, and the C-position fixing frame cannot be overlapped with the target image F due to the existence of the extension portion 4F, so that the fixing frames with inconsistent directions are screened out.

Referring to fig. 6, the fixing frame moves along the guide rail under the action of external force, the guide rail is narrowed at a position C, D, and the direction of the two fixing frames at the position C is different from that of the two fixing frames at the position D, wherein the center of gravity M of the fixing frame at the position C is located at the outer side of the edge line of the guide rail due to the fact that the extending part 4f is located at the side far away from the guide rail, and the fixing frame loses balance under the action of gravity and slides out of the guide rail and cannot continue to advance along the guide rail; the D position fixing frame has the gravity center N inside the edge line of the guide rail because the extension part 4f is arranged at one side close to the guide rail, so that the gravity center N can not lose balance and continuously moves forward along the guide rail. In the scheme, the edge line of the guide rail is arranged between the gravity center M and the gravity center N, and only one of the gravity center M and the gravity center N can be selected to pass through.

Of course, it will be understood by those skilled in the art that, in order to distinguish the image of the fixing frame 4 on one side of the center line 4g from the image on the other side, characters or graphic marks may be used, and these distinguishing marks may be formed by direct press on the stamping surface and/or the blanking surface, or may be further formed by press forming the fixing frame 4. In the automatic feeding process, the fixing frame can be screened by adopting the image comparison method to identify the surface provided with the distinguishing mark.

In addition, referring to fig. 7, only one positioning opening, i.e. the first positioning opening 4c, may be provided on the fixing frame 4, and the solution of one positioning opening has high practicability. In the present embodiment, the fixed frame 4 is asymmetric on both sides with respect to the center of the positioning port, the center of the main body, and the line formed by the opening of the main body as the center line, and therefore, similarly, the fixed frame 4 provided with only one positioning port in fig. 7 can also be automatically screened as shown in fig. 5 or 6. Of course, it can be understood by those skilled in the art that more positioning ports may be provided, and the specific examples are not described one by one.

While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the invention as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.