Necking assembly of air conditioner stop valve

Abstract

The utility model discloses a necking assembly of an air conditioner stop valve, which relates to the technical field of air conditioner stop valve processing equipment and comprises a necking die, one end of the necking die is provided with a necking portion used for necking the bonnet end of the air conditioner stop valve, and the center of the necking die is axially provided with a through groove penetrating through the necking die. A core rod is fixedly arranged in the through groove, one end of the core rod extends to the necking part, and an arc part is arranged at the end, located at the necking part, of the core rod. The core rod is matched with the necking part, so that the problem that the bonnet end of the air conditioner stop valve is not round after necking treatment is solved, the situation that the bonnet end needs to be corrected after the necking process is avoided, and the production efficiency of the air conditioner stop valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning stop valve processing equipment, in particular to a shrinking component of an air-conditioning stop valve. Background Art

[0002] The air conditioner stop valve is an important part of the split air conditioner. By operating the valve stem, the internal passage of the valve can be closed, which plays the role of connecting the outdoor unit with the indoor unit and closing or opening the refrigerant circuit. During the production and processing of the air conditioner stop valve, the valve cap end needs to be processed by the shrinking process, and the shrinking process requires a shrinking mold. Figure 1 and Figure 2 As shown, the shrinking die 1 is a structural design with a shrinking portion 11 at one end. 5 This shrinking die is prone to the problem of the valve bonnet end being out of round after the bonnet end of the air-conditioning stop valve is shrinked, resulting in the need for correction of the valve bonnet end after the shrinking process, thereby reducing the production efficiency of the air-conditioning stop valve; and after the existing shrinking die is shrinked, the scrap rate of the air-conditioning stop valve is 1.4%. Summary of the invention

[0003] The purpose of the utility model is to provide a shrinkage component of an air conditioning stop valve in order to solve the above-mentioned problem.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A necking assembly for an air conditioning stop valve, comprising a necking die, which is approximately cylindrical, and a necking portion for necking the bonnet end of the air conditioning stop valve is provided at one end of the necking die, a through groove penetrating the necking die is provided at the center position of the necking die along its axial direction, the through groove is communicated with the necking portion, a core rod is fixedly provided in the through groove, the central axis of the core rod coincides with the central axis of the necking die, the diameter of the core rod is equal to the diameter of the cavity at the bonnet end of the air conditioning stop valve, one end of the core rod extends to the necking portion, and an arc portion is provided at the end of the core rod located at the necking portion.

[0006] Preferably, a first mounting groove is provided at the end of the necking die away from the necking portion, and a boss is correspondingly provided at the end of the core rod away from the arc portion. The boss is located in the first mounting groove and the two are matched.

[0007] Preferably, the boss is fixedly connected to the first mounting groove by welding.

[0008] Preferably, an inner side wall of the first mounting groove is provided with an internal thread, an outer side surface of the boss is provided with an external thread, and the boss is fixedly connected to the first mounting groove via threads.

[0009] Preferably, a protective sleeve is fixedly provided on the outer side surface of the necking die close to the necking portion, a channel is provided inside the protective sleeve, and the diameter of the channel is larger than the diameter of the valve cap end of the air-conditioning stop valve.

[0010] Preferably, a second mounting groove is provided at one end of the protective sleeve, and the shrinking mold is located in the second mounting groove.

[0011] Preferably, the necking die and the second mounting groove are fixedly connected by welding.

[0012] Preferably, an inner side wall of the second mounting groove is provided with an internal thread, an outer side surface of the shrinking mold is provided with an external thread, and the shrinking mold is fixedly connected to the second mounting groove via threads.

[0013] Preferably, the length of the protective sleeve is 16-19 mm.

[0014] The beneficial effects of the utility model are as follows: (1) the core rod of the utility model cooperates with the shrinking part, so that the bonnet end of the air-conditioning stop valve will not be out of round after the shrinking process, avoiding the need to correct the bonnet end after the shrinking process, thereby improving the production efficiency of the air-conditioning stop valve; (2) after the shrinking process, the scrap rate of the air-conditioning stop valve is reduced to 0.6%, thereby improving the qualified rate of the air-conditioning stop valve after the shrinking process; (3) the protective cover can protect the air-conditioning stop valve, avoiding the collision between other parts on the shrinking machine and the bonnet end of the air-conditioning stop valve during the shrinking process and causing damage to it. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a stereogram of a conventional necking die;

[0016] Figure 2 It is a cross-sectional view of a necking die in the prior art;

[0017] Figure 3 It is a three-dimensional diagram of the overall structure of the utility model;

[0018] Figure 4 It is a cross-sectional view of the overall structure of the utility model;

[0019] Figure 5 It is an exploded view of the overall structure of the utility model;

[0020] Figure 6 This is a schematic diagram of the shrinking principle of the utility model;

[0021] Figure 7 It is a first stereoscopic diagram of an air conditioning stop valve in the prior art;

[0022] Figure 8 It is a second stereoscopic view of the air conditioning stop valve in the prior art.

[0023] Description of reference numerals:

[0024] 1. Narrowing die; 11. Narrowing portion; 12. First mounting groove; 13. Through groove;

[0025] 2. mandrel; 21. arc portion; 22. boss;

[0026] 3. Protective cover; 31. Channel; 32. Second mounting slot;

[0027] 4. Air conditioning stop valve; 41. Valve bonnet end; 411. Cavity; 42. Pipe nut end; 421. Threaded portion; 43. Mounting plate; 44. Welding end. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings:

[0029] The air conditioning stop valve is divided into two-way air conditioning stop valve and three-way air conditioning stop valve. Figure 7 and Figure 8 As shown, the structure of the two-way air-conditioning stop valve includes a valve bonnet end 41, a pipe nut end 42 and a welding end 44, and a mounting plate 43 is provided on the outer side of the air-conditioning stop valve 4 near the welding end 44, wherein the pipe nut end 42 and the valve bonnet end 41 are both provided with a threaded portion 421, and the valve bonnet end 41 is provided with a cavity 411.

[0030] like Figure 3 , Figure 4 and Figure 5 As shown, the utility model provides a shrinking assembly for an air-conditioning stop valve, including a shrinking die 1, which is approximately cylindrical. A shrinking portion 11 for shrinking the valve bonnet end 41 of the air-conditioning stop valve 4 is provided at one end of the shrinking die 1. A through groove 13 penetrating the shrinking die 1 is provided at the center position of the shrinking die 1 along its axial direction, and the through groove 13 is connected to the shrinking portion 11. A core rod 2 is fixedly provided in the through groove 13, and the central axis of the core rod 2 coincides with the central axis of the shrinking die 1, and the diameter of the core rod 2 is equal to the diameter of the cavity 411 of the valve bonnet end 41 of the air-conditioning stop valve 4. One end of the core rod 2 extends to the shrinking portion 11. A circular arc portion 21 is provided at the end of the core rod 2 located at the shrinking portion 11, and the circular arc portion 21 facilitates the core rod 2 to extend into the cavity 411 of the valve bonnet end 41 of the air-conditioning stop valve 4, and can prevent the core rod 2 from scratching the valve bonnet end 41.

[0031] like Figure 4 and Figure 5As shown, on the basis of the above embodiment, further, the end of the necking die 1 away from the necking portion 11 is provided with a first mounting groove 12, and the end of the core rod 2 away from the arc portion 21 is correspondingly provided with a boss 22, and the boss 22 is located in the first mounting groove 12 and the two cooperate. The necking die 1 and the core rod 2 adopt a split design, which is convenient for processing and manufacturing. In this embodiment, the inner side wall of the first mounting groove 12 is provided with an internal thread, and the outer side surface of the boss 22 is provided with an external thread, and the boss 22 is fixedly connected to the first mounting groove 12 by threads. The boss 22 and the first mounting groove 12 can also be fixedly connected by welding.

[0032] like Figure 3 , Figure 4 and Figure 5 As shown, on the basis of the above-mentioned embodiment, further, a protective sleeve 3 is fixedly provided on the outer side surface of the shrinking die 1 close to the shrinking portion 11. A channel 31 is provided inside the protective sleeve 3, and the diameter of the channel 31 is larger than the diameter of the valve bonnet end 41 of the air-conditioning stop valve 4. The protective sleeve 3 can protect the air-conditioning stop valve 4 to prevent other components on the shrinking machine from colliding with the valve bonnet end 41 of the air-conditioning stop valve 4 during the shrinking process and causing damage thereto. For example, the protective sleeve 3 can protect the threaded portion 421 of the valve bonnet end 41 from being damaged by collision with other components on the shrinking machine during shrinking. A second mounting groove 32 is provided at one end of the protective sleeve 3, and the shrinking die 1 is located in the second mounting groove 32. The shrinking die 1 and the second mounting groove 32 can be fixedly connected by welding. The shrinking die 1 and the second mounting groove 32 can also be fixedly connected by threads, for example, the inner side wall of the second mounting groove 32 is provided with an internal thread, the outer side surface of the shrinking die 1 is provided with an external thread, and the shrinking die 1 and the second mounting groove 32 are fixedly connected by threads. As Figure 6 As shown, the length of the protective sleeve 3 is 16-19 mm. In this embodiment, the length of the protective sleeve 3 is 19 mm. The length of the protective sleeve 3 must be limited to avoid the protective sleeve 3 being too long and colliding with the threaded portion 421 of the nut end 42 of the air conditioning stop valve 4 during shrinking, causing damage to the nut.

[0033] like Figures 3 to 8 As shown, during installation, the core rod 2 is first fixedly installed with the shrinking die 1, and then the protective cover 3 can be fixedly installed with the shrinking die 1, and finally, the shrinking die 1 is fixedly installed on the shrinking machine through a clamp. During operation, first, the staff takes an air-conditioning stop valve 4 by hand and places it on the product placement tooling of the shrinking machine, and then steps on the foot switch, the shrinking machine starts to work, and the shrinking die 1 on the shrinking machine moves toward the air-conditioning stop valve 4 on the product placement tooling, and finally, the core rod 2 extends into the cavity 411 of the valve bonnet end 41, and the shrinking part 11 shrinks the valve bonnet end 41, and the shrinking part 11 cooperates with the core rod 2 to avoid the problem of the valve bonnet end 41 being out of round after shrinking, and the shrinking process of an air-conditioning stop valve 4 is completed.

[0034] The above are only preferred embodiments of the present invention, and do not limit the scope of the present invention. A person skilled in the art should understand that various changes, modifications, substitutions and deformations can be made to these embodiments without departing from the principles and purposes of the present invention, which should all be included in the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. A necking assembly for an air-conditioning stop valve, comprising a necking die, the necking die being approximately cylindrical, one end of the necking die being provided with a necking portion for necking the valve cap end of the air-conditioning stop valve, characterized in that: A through groove penetrating the shrinking die is arranged at the center position of the shrinking die along its axial direction, the through groove is connected with the shrinking part, a core rod is fixedly arranged in the through groove, the central axis of the core rod coincides with the central axis of the shrinking die, the diameter of the core rod is equal to the diameter of the cavity at the bonnet end of the air-conditioning stop valve, one end of the core rod extends to the shrinking part, and an arc portion is arranged at the end of the core rod located at the shrinking part.

2. The necking assembly of an air conditioning stop valve according to claim 1, characterized in that: The end of the necking die away from the necking portion is provided with a first mounting groove, and the end of the core rod away from the arc portion is correspondingly provided with a boss, and the boss is located in the first mounting groove and the two are matched.

3. The necking assembly of an air conditioning stop valve according to claim 2, characterized in that: The boss is fixedly connected to the first mounting groove by welding.

4. The necking assembly of an air conditioning stop valve according to claim 2, characterized in that: An inner wall of the first mounting groove is provided with an internal thread, an outer side surface of the boss is provided with an external thread, and the boss is fixedly connected to the first mounting groove via threads.

5. The necking assembly of an air conditioning stop valve according to claim 1, characterized in that: A protective sleeve is fixedly arranged on the outer side surface of the necking die close to the necking part, and a channel is arranged inside the protective sleeve. The diameter of the channel is larger than the diameter of the valve cap end of the air-conditioning stop valve.

6. The necking assembly of an air conditioning stop valve according to claim 5, characterized in that: A second mounting groove is provided at one end of the protective sleeve, and the shrinking mold is located in the second mounting groove.

7. The shrinkage assembly of the air conditioning stop valve according to claim 6, characterized in that: The necking die is fixedly connected to the second mounting groove by welding.

8. The shrinkage assembly of an air conditioning stop valve according to claim 6, characterized in that: An inner wall of the second mounting groove is provided with an internal thread, an outer side surface of the shrinking die is provided with an external thread, and the shrinking die is fixedly connected to the second mounting groove via threads.

9. The necking assembly of an air conditioning stop valve according to claim 5, characterized in that: The length of the protective sleeve is 16-19 mm.

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