Positioning device for vertical position welding of pressure switch

Abstract

The utility model discloses a pressure switch vertical position welding positioning device which comprises a supporting frame, a nitrogen charging rod and a positioning rod. The nitrogen charging rod and the positioning rod are arranged in the left-right direction, and are arranged on the supporting frame in a manner that the height distance and the front-back distance are adjustable; the nitrogen charging rod is provided with a pipeline piece butt joint opening and a nitrogen channel connected with the pipeline piece butt joint opening. A positioning piece is detachably arranged on the positioning rod; the pipeline piece butt joint openings and the positioning pieces are configured in the mode that when the pipeline pieces are in butt joint with the pipeline piece butt joint openings, the welding sections of the pipeline pieces are transversely arranged, welding holes face upwards, and the gravity centers of the pipeline pieces are supported on the positioning pieces. According to the pressure switch welding device, an existing flat welding mode can be changed into a vertical welding mode, the efficiency of welding a pressure switch to a pipeline piece is remarkably improved, the welding quality is guaranteed, and the situation of welding leakage is controlled in a great proportion. In addition, the device provided by the utility model can be flexibly adjusted, and is suitable for various types of pipeline pieces and / or pressure switches.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding tools, and in particular relates to a welding positioning device for welding a pressure switch to a pipeline component. Background Art

[0002] The pressure switch is an important component in the air conditioning system. Its main function is to detect the pressure changes inside the air conditioning system and control the switching operation of the air conditioning according to the preset pressure range.

[0003] Combination Figure 1 As shown, the pressure switch 10 for the air conditioning system generally includes a switch body 11 and a pressure pipe 12. One end of the pressure pipe 12 is connected to the switch body 10, and the other end is used to be connected to the pipe 20 of the air conditioning system. Figure 2 As shown; the switch body 11 includes a pressure-sensitive element and a control circuit (which belongs to the prior art and is not specifically shown in the figure), the pressure-conducting tube 12 is used to guide the pressure in the pipeline 20 to the pressure-sensitive element, the pressure-sensitive element is used to sense the pressure and convert it into an electrical signal, and the control circuit controls the operation of the air-conditioning system according to the electrical signal corresponding to the sensed pressure.

[0004] Currently, the other end of the pressure-conducting tube 12 is connected to the corresponding welding hole on the side wall of the pipeline component 20 by welding. Figure 2 As shown, in the prior art, when welding, the welding section 21 of the pipe member 20 is hung vertically, and the welding section 121 of the pressure pipe 12 of the pressure switch 10 is horizontally placed, and the pressure switch is welded in a flat welding manner. The so-called flat welding refers to the welding method in which the welding section 121 of the pressure switch 10 as the component to be welded is arranged horizontally, while the welding section 21 of the pipe member 20 as the main component is arranged upright.

[0005] Due to welding requirements, the pressure switch 10 cannot be held by hand during welding, so the welding section 121 of the pressure switch 10 can only be hung on the welding section 21 of the pipeline 20 through the plug-in portion inserted into the welding hole. Due to the balance problem, the pressure switch is skewed, so that the contact part is not fully in contact, resulting in a welding gap 29. Figure 3 At the same time, the current flat welding method will cause the pressure switch 10 to be welded on the pipe part 20, which will result in insufficient local heating, uneven solder fusion, insufficient solder penetration, easy formation of sand holes in the weld, and a high defect rate. Therefore, it is necessary to develop a new welding positioning device and a corresponding welding control method. Utility Model Content

[0006] The utility model aims to provide a pressure switch vertical welding positioning device, aiming to improve the efficiency of welding the pressure switch to the pipeline. The utility model is realized by the following technical solutions:

[0007] A vertical welding positioning device for a pressure switch comprises a support frame, a nitrogen charging rod and a positioning rod; the nitrogen charging rod and the positioning rod are arranged in left and right directions, and are arranged on the support frame with adjustable height and front and rear distances; the nitrogen charging rod is provided with a pipeline fitting interface and a nitrogen passage connecting the pipeline fitting interface; the positioning rod is detachably provided with a positioning member; the pipeline fitting interface and the positioning member are configured as follows: when the pipeline fittings are connected to the pipeline fitting interfaces, the welding section of the pipeline fitting is arranged horizontally with the welding hole facing upward, and the center of gravity of the pipeline fitting is supported on the positioning member.

[0008] As a preferred technical solution, the nitrogen filling rod is hollow, and at least two pipe fitting docking ports are arranged on one side wall in a left-right arrangement.

[0009] As a preferred technical solution, the nitrogen filling rod is provided with a nitrogen inlet connected to the nitrogen passage.

[0010] As a preferred technical solution, the nitrogen inlet is a pipe fitting interface among the at least two pipe fitting interfaces which avoids a pipe fitting to which the pipe fitting is connected.

[0011] As a preferred technical solution, the pressure switch vertical welding positioning device also includes a plug for sealing the interface of the pipeline component that is not connected to the pipeline component.

[0012] As a preferred technical solution, the pressure switch vertical welding positioning device also includes a nitrogen inlet nozzle connected to the nitrogen inlet.

[0013] As a preferred technical solution, the pressure switch vertical welding positioning device also includes a nitrogen supply mechanism and a nitrogen delivery pipeline; one end of the nitrogen delivery pipeline is connected to the nitrogen supply mechanism, and the other end is connected to the nitrogen access nozzle.

[0014] As a preferred technical solution, at least two positioning member assembly openings are arranged in left and right arrangement on one side wall of the positioning rod; one end of the positioning member is plugged and assembled in the positioning member assembly opening, and the other end is provided with a pipeline member supporting portion.

[0015] As a preferred technical solution, the nitrogen filling rod and the positioning rod are respectively arranged on the support frame in a manner that the height can be adjusted and the front and rear can be adjusted.

[0016] As a preferred technical solution, the support frame includes a left support assembly and a right support assembly, and the left and right ends of the nitrogen filling rod and the positioning rod are respectively arranged on the left support assembly and the right support assembly.

[0017] As a preferred technical solution, the left support assembly and the right support assembly each include a first support member, a second support member and a third support member; the first support member is provided with a first guide groove arranged in a front-to-back direction, and the lower ends of the second support member and the third support member are respectively engaged in the first guide groove for front-to-back displacement; the second support member and the third support member are respectively provided with a second guide groove and a third guide groove arranged in an up-to-down direction, the end of the nitrogen filling rod is engaged in the second guide groove for up-to-down displacement, and the end of the positioning rod is engaged in the third guide groove for up-to-down displacement.

[0018] As a preferred technical solution, the pressure switch vertical welding positioning device also includes a screw hole handle; the second support member and the third support member are each provided with a first screw on the lower end side, the first screw passes through the first guide groove and is locked by the screw hole handle; the end of the nitrogen filling rod is provided with a second screw outwardly, the second screw passes through the second guide groove and is locked by the screw hole handle; the end of the positioning rod is provided with a third screw outwardly, the third screw passes through the third guide groove and is locked by the screw hole handle.

[0019] As a preferred technical solution, the support frame also includes a base frame, and the left support assembly and the right support assembly are respectively arranged at left and right ends above the base frame.

[0020] The vertical welding positioning device for a pressure switch provided by the utility model can change the existing flat welding method to a vertical welding method, significantly improve the efficiency of welding the pressure switch to the pipeline, ensure the welding quality, and greatly control the welding leakage. In addition, the device provided by the utility model can be flexibly adjusted and is suitable for various types of pipelines and / or pressure switches. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of a pressure switch used in air conditioning systems.

[0022] Figure 2 The present invention is a stereoscopic diagram of a pressure switch welded to a side wall of a pipeline component by flat welding in the prior art.

[0023] Figure 3 for Figure 2 Enlarged view of part A.

[0024] Figure 4 A three-dimensional diagram of a pressure switch vertical welding positioning device provided in an embodiment of the utility model.

[0025] Figure 5 A three-dimensional diagram of a base frame in a pressure switch vertical welding positioning device provided in an embodiment of the utility model.

[0026] Figure 6 A cross-sectional view of a left support assembly or a right support assembly in a vertical welding positioning device for a pressure switch provided in an embodiment of the utility model.

[0027] Figure 7 A stereoscopic diagram of a nitrogen filling rod in a vertical welding positioning device for a pressure switch provided in an embodiment of the utility model.

[0028] Figure 8 A three-dimensional diagram of a positioning rod in a pressure switch vertical welding positioning device provided in an embodiment of the utility model.

[0029] Fig. 9 A three-dimensional diagram of a screw hole handle in a vertical welding positioning device for a pressure switch provided in an embodiment of the utility model.

[0030] Fig.10 A three-dimensional diagram of a positioning member in a vertical welding positioning device for a pressure switch provided in an embodiment of the utility model.

[0031] Fig.11 A stereoscopic diagram of a nitrogen inlet nozzle in a pressure switch vertical welding positioning device provided in an embodiment of the utility model.

[0032] Fig.12 An example diagram of a pressure switch vertical welding positioning device provided in an embodiment of the utility model having a pipeline component arranged thereon.

[0033] Fig.13 Another example diagram of a pressure switch vertical welding positioning device provided in an embodiment of the utility model having a pipeline component arranged thereon.

[0034] Explanation of the accompanying drawings: 10-pressure switch, 11-switch body, 12-pressure guiding tube, 122-connecting section, 123-connecting section, 20-pipe fittings, 21-welding section, 30-support frame, 31-left support assembly, 32-right support assembly, 33-base frame, 301-first support member, 302-second support member, 303-third support member, 3011-first guide groove, 3021-second guide groove, 3031-third guide groove, 309-first screw, 40-nitrogen charging rod, 41-pipe fitting docking port, 42-second screw, 50-positioning rod, 51-positioning member assembly port, 52-third screw, 60-positioning member, 61-pipe fitting supporting part, 70-nitrogen access nozzle, 80-screw hole handle. DETAILED DESCRIPTION

[0035] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0036] In the description of the present utility model, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships that are based on the orientations or relative positional relationships shown in the accompanying drawings, and are intended to facilitate a clear description of the structure of a product or device, and are not used to limit the actual orientation of the product or device during production, use, sales, and the like.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "set", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] Combination Figure 1 As shown, the pressure switch 10 involved in this embodiment is a pressure switch used in an air conditioning system. The pressure switch 10 includes a switch body 11 and a pressure pipe 12. One end of the pressure pipe 12 is connected to the switch body 10, and the other end is used to be connected to the pipe 20 of the air conditioning system (see Fig.12 , Fig.13) on; the switch body 11 includes a pressure-sensitive element and a control circuit, the pressure-conducting tube 12 is used to guide the pressure within the pipeline 20 to the pressure-sensitive element, the pressure-sensitive element is used to sense the pressure and convert it into an electrical signal, the control circuit controls the operation of the air-conditioning system according to the electrical signal corresponding to the sensed pressure.

[0041] Specifically, the pressure-conducting tube 12 includes a welding section 121, a connecting section 122 and a connecting section 123. The connecting section 122 is used to connect the switch body 11, the welding section 121 is used to connect the pipe fittings of the air-conditioning system, and the connecting section 123 is a 90-degree arc section used to connect the welding section 121 and the connecting section 122 perpendicularly to each other.

[0042] The pressure-conducting tube 12 described above is only an exemplary structure. The key point is that the pressure-conducting tube 12 has a welding section 121 for connecting with the pipeline and a connecting section 122 for connecting with the switch body 11. Whether there is a connecting section or the specific shape of the connecting section is not limited. Similarly, the pipeline 20 can have a variety of shapes and directions. The key point is that the pipeline 20 has a welding section 21 (see Fig.12 , Fig.13 ).

[0043] like Figure 4 As shown, this embodiment provides a pressure switch vertical welding positioning device, including a support frame 30, a nitrogen charging rod 40 and a positioning rod 50; wherein, the nitrogen charging rod 40 and the positioning rod 50 are respectively arranged on the support frame 30 in a left-right direction, and the height distance between the nitrogen charging rod 40 and the positioning rod 50 is adjustable, and the front-to-back distance between them is adjustable. Here, the height distance between the nitrogen charging rod 40 and the positioning rod 50 is adjustable, and the height of the nitrogen charging rod 40 and the positioning rod 50 can be adjusted separately, or one of them can be adjusted in height; similarly, the front-to-back distance between the nitrogen charging rod 40 and the positioning rod 50 is adjustable, and the front-to-back distance between the nitrogen charging rod 40 and the positioning rod 50 can be adjusted separately, or one of them can be adjusted in front-to-back.

[0044] Figure 4 In the illustrated embodiment, the nitrogen filling rod 40 and the positioning rod 50 are respectively arranged on the support frame 30 in a manner that they can be adjusted in height; at the same time, the nitrogen filling rod 40 and the positioning rod 50 are also respectively arranged on the support frame 30 in a manner that they can be adjusted in front and back.

[0045] Combination Figure 7As shown, a plurality of pipeline fitting interfaces 41 are provided on at least one side of the nitrogen charging rod 40, and a nitrogen passage connected to the pipeline fitting interface 41 is provided inside the nitrogen charging rod 40; in this embodiment, the nitrogen charging rod 30 is a hollow rod, and the hollow passage can be used as the nitrogen passage; a positioning member 60 is detachably provided on the positioning rod 50; wherein, the pipeline fitting interface 41 and the positioning member 60 are configured as follows: when the pipeline fitting 20 is docked with the pipeline fitting interface 41, the welding section 21 of the pipeline fitting is arranged horizontally and the welding hole faces upward, and at the same time, the center of gravity of the pipeline fitting 20 is supported on the positioning member 60 to achieve vertical welding positioning, see Fig.12 The vertical welding mentioned here refers to the welding method in which the welding section 121 of the pressure switch 10 as the device to be welded is arranged vertically, while the welding section 21 of the pipe member 20 as the main component is arranged horizontally.

[0046] In this embodiment, the nitrogen passage is used to introduce the nitrogen provided by the gas source into the nitrogen charging rod 40, and then introduced into the pipe fitting 20 connected thereto through the pipe fitting docking port 41 of the nitrogen charging rod, so as to be used when the welding section 121 of the pressure switch 10 and the welding section 21 of the pipe fitting 20 are welded to each other. Therefore, the nitrogen charging rod 40 must be provided with a nitrogen inlet connected to the nitrogen passage.

[0047] As a relatively simple and easy-to-implement implementation scheme, the nitrogen inlet is a pipe fitting interface among multiple pipe fitting interfaces that avoids the pipe fitting to be connected. Of course, a dedicated nitrogen inlet can also be provided at the end of a head of the nitrogen charging rod 40 or on a side wall of the press 40. Moreover, the pressure switch vertical welding positioning device provided in this embodiment also includes a nitrogen inlet nozzle 70 connected to the nitrogen inlet, see Figure 4 or Fig.13 The specific structure of the nitrogen inlet nozzle 70 is shown in Fig.11 .

[0048] In addition, the pressure switch vertical welding positioning device provided in this embodiment also includes a nitrogen supply mechanism and a nitrogen delivery pipeline (not shown in the figure); one end of the nitrogen delivery pipeline is connected to the nitrogen supply mechanism, and the other end is connected to the nitrogen inlet nozzle 70.

[0049] In addition, the pressure switch vertical welding positioning device provided in this embodiment also includes a plurality of plugs for plugging the pipeline component docking interface 41 that is not docked with the pipeline component 20 to avoid unnecessary leakage of nitrogen in the nitrogen passage, which causes waste.

[0050] Combination Figure 8 As shown, a plurality of positioning member assembly openings 51 are arranged on the side wall of the positioning rod 50 in a left-right arrangement; Fig.10 As shown, one end of the positioning member 60 is plugged and assembled in the positioning member assembly port, and the other end is provided with a pipe member supporting portion 61 for supporting the pipe member 20.

[0051] Combination Figures 4 to 9 As shown, the support frame includes a left support assembly 31 and a right support assembly 32 , and the left and right ends of the nitrogen filling rod 40 and the positioning rod 50 are respectively arranged on the left support assembly 31 and the right support assembly 32 .

[0052] Specific as Figure 6 As shown, the left support assembly and the right support assembly each include a first support member 301, a second support member 302 and a third support member 303; the first support member 301 is provided with a first guide groove 3011 arranged in a front-to-back direction, and the lower ends of the second support member 302 and the third support member 303 are respectively matched with the first guide groove 3011 in a front-to-back displacement manner; the second support member 302 and the third support member 303 are respectively provided with a second guide groove 3021 and a third guide groove 3031 arranged in an up-down direction, and the two ends of the nitrogen charging rod 40 are matched with the second guide groove 3021 of the left support assembly 31 and the right support assembly 32 in a up-down displacement manner, and the two ends of the positioning rod 50 are matched with the third guide groove 3031 of the left support assembly 31 and the right support assembly 32 in a up-down displacement manner, and the combination Figure 4 In this way, the height distance and the front-to-back distance between the nitrogen filling rod 40 and the positioning rod 50 can be adjusted.

[0053] The pressure switch vertical welding positioning device provided in this embodiment also includes a screw hole handle 80, combined with Figure 4 and Fig. 9 As shown; the lower end side of each of the second support member 302 and the third support member 303 is respectively provided with a first screw 309, the first screw 309 passes through the first guide groove 3011 and is locked by the screw hole handle 80; in addition, combined Figure 4 and Figure 7 As shown, the end of the nitrogen filling rod 40 is provided with a second screw 42 outwardly, and the second screw 42 passes through the second guide groove 3021 and is locked by the screw hole handle 80; Figure 4 and Figure 8 As shown, a third screw rod 52 is disposed outwardly at the end of the positioning rod 50 , and the third screw rod 52 passes through the third guide groove 3031 and is locked by the screw hole handle 80 .

[0054] See also Figure 4 and Figure 5 As shown, the support frame 30 also includes a base frame 33 , and the left support assembly 31 and the right support assembly 32 are fixedly disposed on the left and right ends above the base frame 33 , respectively.

[0055] Combination Figure 4 , Fig.12 and Fig.13 As shown, the welding control method of the pressure switch vertical welding positioning device described above includes the following steps:

[0056] S1. Connect the pipe fitting 20 to the pipe fitting docking port 41 of the nitrogen charging pipe 40; adjust the relative positions of the nitrogen charging rod 40 and the positioning rod 50 so that the welding section 21 of the pipe fitting 20 is arranged horizontally and the welding hole faces upward, and the center of gravity of the pipe fitting 20 is supported on the corresponding positioning piece 60;

[0057] S2, inserting the end of the welding section 121 of the pressure switch 10 into the welding hole from top to bottom;

[0058] S3, nitrogen is delivered to the pipe fitting 20 through the nitrogen passage and the pipe fitting interface 41, and at the same time, the end of the welding section 121 of the pressure switch 10 is welded to the welding hole by welding equipment.

[0059] The above embodiments are only intended to fully disclose but not limit the present invention. Any replacement of equivalent technical features based on the creative purpose of the present invention without creative labor should be regarded as the scope disclosed in this application.

Claims

1. A pressure switch vertical welding positioning device, characterized in that: It comprises a support frame, a nitrogen charging rod and a positioning rod; the nitrogen charging rod and the positioning rod are arranged in left and right directions, and are arranged on the support frame with adjustable height and front and rear distances; the nitrogen charging rod is provided with a pipeline fitting interface and a nitrogen passage connected to the pipeline fitting interface; the positioning rod is detachably provided with a positioning piece; the pipeline fitting interface and the positioning piece are configured as follows: when the pipeline fittings are connected to the pipeline fitting interfaces, the welding sections of the pipeline fittings are arranged horizontally with the welding holes facing upwards, and the center of gravity of the pipeline fittings is supported on the positioning piece.

2. The pressure switch vertical welding positioning device according to claim 1 is characterized in that: The nitrogen filling rod is hollow, and at least two pipeline fitting docking ports are arranged on one side wall in a left-right arrangement.

3. The pressure switch vertical welding positioning device according to claim 2 is characterized in that: The nitrogen charging rod is provided with a nitrogen inlet connected to the nitrogen passage.

4. The pressure switch vertical welding positioning device according to claim 3 is characterized in that: The nitrogen inlet is a pipe fitting interface among the at least two pipe fitting interfaces that avoids a pipe fitting that is butted against the pipe fitting.

5. The pressure switch vertical welding positioning device according to claim 2, characterized in that: It also includes a plug for sealing the interface of the pipeline component that is not connected to the pipeline component.

6. The pressure switch vertical welding positioning device according to claim 3, characterized in that: It also includes a nitrogen inlet nozzle connected to the nitrogen inlet.

7. The pressure switch vertical welding positioning device according to claim 6, characterized in that: It also includes a nitrogen supply mechanism and a nitrogen delivery pipeline; one end of the nitrogen delivery pipeline is connected to the nitrogen supply mechanism, and the other end is connected to the nitrogen inlet nozzle.

8. The pressure switch vertical welding positioning device according to claim 1, characterized in that: At least two positioning member assembly openings are arranged in a left-right arrangement on a side wall of one side of the positioning rod; one end of the positioning member is plug-fittedly assembled in the positioning member assembly opening, and the other end is provided with a pipeline member supporting portion.

9. The pressure switch vertical welding positioning device according to claim 1, characterized in that: The nitrogen filling rod and the positioning rod are respectively arranged on the support frame in a manner that the height can be adjusted and the front and rear can be adjusted.

10. The pressure switch vertical welding positioning device according to any one of claims 1 to 9, characterized in that: The support frame comprises a left support assembly and a right support assembly, and the left and right ends of the nitrogen filling rod and the positioning rod are respectively arranged on the left support assembly and the right support assembly.

11. The pressure switch vertical welding positioning device according to claim 10, characterized in that: The left support assembly and the right support assembly each include a first support member, a second support member and a third support member; the first support member is provided with a first guide groove arranged in a front-to-rear direction, and the lower ends of the second support member and the third support member are respectively engaged in the first guide groove for front-to-rear displacement; the second support member and the third support member are respectively provided with a second guide groove and a third guide groove arranged in an up-to-down direction, and the end of the nitrogen charging rod is engaged in the second guide groove for up-to-down displacement, and the end of the positioning rod is engaged in the third guide groove for up-to-down displacement.

12. The pressure switch vertical welding positioning device according to claim 11, characterized in that: The pressure switch vertical welding positioning device also includes a screw hole handle; the second support member and the third support member are each provided with a first screw on their lower end side, the first screw passes through the first guide groove and is locked by the screw hole handle; the end of the nitrogen filling rod is provided with a second screw outwardly, the second screw passes through the second guide groove and is locked by the screw hole handle; the end of the positioning rod is provided with a third screw outwardly, the third screw passes through the third guide groove and is locked by the screw hole handle.

13. The pressure switch vertical welding positioning device according to claim 10, characterized in that: The support frame also includes a base frame, and the left support assembly and the right support assembly are respectively arranged at left and right ends above the base frame.

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