Heat dissipation device for sensor diaphragm welding

Abstract

The utility model discloses a heat dissipation device for welding a sensor diaphragm. The heat dissipation device comprises a pressing ring, a heat dissipation ring and a heat dissipation block. The pressing ring abuts against one end of a non-welding area of the sensor. The heat dissipation ring is connected with the pressing ring, the heat dissipation ring abuts against the side portion of the sensor, and an inclined face is arranged on the outer surface of the heat dissipation ring so as to avoid a welding gun head; the heat dissipation block and the pressing ring are oppositely arranged, and the heat dissipation block abuts against one end, where the sensor is welded with the diaphragm. According to the utility model, the welding heat dissipation function of the sensor diaphragm can be improved, local thermal stress concentration is prevented, and the deformation of the corrugated diaphragm during welding is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation devices, in particular to a heat dissipation device used for welding sensor diaphragms. Background Art

[0002] In the related art, during the welding process of the sensor's silicone oil-filled pressure core, the corrugated diaphragm often suffers from edge deformation to varying degrees, affecting the product appearance.

[0003] To solve the above problem, there are two existing solutions. One is to add a heat dissipation fixture to the end of the pressure ring to dissipate the heat at the edge of the corrugated diaphragm during welding. However, the corrugated diaphragms of some products still have edge wrinkles after welding. Figure 1 As shown, in the prior art, the heat dissipation device for sensor diaphragm welding includes a heat dissipation block 10, which is fixed at the limit end of the laser welder, and the sensor 20 is fixed by a rotating chuck 30 of the laser welder. The contact between the rotating chuck 30 and the sensor 20 is a line contact, and the pressure ring of the sensor is supported by the heat dissipation block 10. The heat dissipation of the sensor 20 during welding is mainly achieved by the heat dissipation block near the pressure ring, and the heat dissipation effect is limited. Another method is to increase the cross-sectional area of ​​the pressure ring and hide the edges that are prone to slight deformation, which does not solve the problem of welding deformation.

[0004] The existing heat dissipation device has only the pressure ring as the heat dissipation position, and the heat generated during welding acts on the pressure ring, corrugated diaphragm and tube seat at the same time. Since the corrugated diaphragm is extremely thin and directly opposite the weld, it is necessary to design a heat dissipation device to enhance the heat dissipation of the tube seat near the weld, so as to achieve the purpose of preventing the corrugated diaphragm from deforming during welding and improve the product qualification rate. This case is thus generated. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, one purpose of the utility model is to provide a heat dissipation device for sensor diaphragm welding to improve the heat dissipation function of sensor diaphragm welding, prevent local thermal stress concentration, and reduce the deformation of the corrugated diaphragm during welding.

[0006] To achieve the above-mentioned purpose, the first embodiment of the utility model proposes a heat dissipation device for sensor diaphragm welding, comprising:

[0007] A pressure ring, the pressure ring abutting against one end of the non-welding area of ​​the sensor;

[0008] A heat dissipation ring, the heat dissipation ring is connected to the pressure ring, the heat dissipation ring is against the side of the sensor, and the outer surface of the heat dissipation ring is provided with an inclined surface to make way for the welding gun head;

[0009] A heat sink block is arranged opposite to the pressure ring, and the heat sink block abuts against one end of the sensor welding diaphragm.

[0010] According to a heat dissipation device for sensor diaphragm welding according to an embodiment of the utility model, the heat dissipation block is against one end of the sensor welding diaphragm, the pressure ring is against one end of the sensor non-welding area, and the heat dissipation ring is against the side of the sensor, so as to achieve multiple heat dissipation of the sensor diaphragm welding, thereby improving the heat dissipation function of the sensor diaphragm welding, preventing local thermal stress concentration, and reducing the deformation of the corrugated diaphragm during welding. At the same time, the outer surface of the heat dissipation ring is provided with an inclined surface, so as to ensure that the welding gun head has sufficient operating space while increasing the heat dissipation contact surface area as much as possible.

[0011] In addition, the heat dissipation device for sensor diaphragm welding proposed in the above embodiment of the utility model may also have the following additional technical features:

[0012] Optionally, the heat dissipation block is provided with a communication hole connected to the atmosphere.

[0013] Specifically, the communication hole includes a first communication hole axially arranged on the heat dissipation block and a second communication hole radially arranged on the heat dissipation block, and the first communication hole is connected to the second communication hole.

[0014] Optionally, the heat dissipation block is connected to the limiting end of the laser welder through a bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the prior art;

[0016] Figure 2 It is a structural schematic diagram of an embodiment of the utility model.

[0017] Description of symbols

[0018] Heat sink 10, sensor 20, rotating chuck 30, welding gun head 40;

[0019] The pressure ring 1 , the heat dissipation ring 2 , the inclined surface 21 , the heat dissipation block 3 , the first connecting hole 31 , the second connecting hole 32 , and the bearing 33 . DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0022] like Figure 2 As shown, a heat dissipation device for sensor diaphragm welding according to an embodiment of the utility model comprises a pressure ring 1, a heat dissipation ring 2 and a heat dissipation block 3. The sensor 20 is first mounted on a jig, and the jig is fixed by a rotating chuck 30 of a laser welder.

[0023] The pressing ring 1 is against one end of the non-welding area of ​​the sensor 20. Specifically, the pressing ring 1 is placed in the rotating chuck 30 of the laser welding machine, and a clearance hole is formed in the axial center of the pressing ring 1 to allow the components of the sensor 20 to be in place.

[0024] The heat dissipation ring 2 is connected to the pressure ring 1 , and the heat dissipation ring 2 and the pressure ring 1 can be connected by the protrusion and the slot. The heat dissipation ring 2 is against the side of the sensor 20 , and the outer surface of the heat dissipation ring 2 is provided with a bevel 21 to make way for the welding gun head 40 .

[0025] The heat sink 3 is arranged opposite to the pressure ring 1, and the heat sink 3 is against one end of the sensor 20 welded diaphragm, that is, the diaphragm is welded at one end of the heat sink 3, and the end opposite to the end of the diaphragm welded at one end of the heat sink 3 is a non-welding area. Optionally, a connecting hole connected to the atmosphere is provided on the heat sink 3. Specifically, the connecting hole includes a first connecting hole 31 axially arranged on the heat sink 3 and a second connecting hole 32 radially arranged on the heat sink 3, and the first connecting hole 31 is connected to the second connecting hole 32. The central opening of the heat sink 3 is connected to the atmosphere, which can prevent the influence of atmospheric pressure on the deformation of the diaphragm.

[0026] Optionally, the heat sink 3 is connected to the limit end of the laser welder through a bearing 33. The provision of the bearing can ensure that the rotation sensor 20 is smoother during circle welding, thereby improving the quality of the weld.

[0027] The material of the pressure ring 1 , the heat dissipation ring 2 and the heat dissipation block 3 may be 316 stainless steel with high thermal conductivity and lower hardness than the main material of the sensor, so as to prevent the heat dissipation device from being deformed due to abutting against the sensor 20 .

[0028] In the embodiment of the utility model, a heat dissipation device for sensor diaphragm welding is provided, wherein the heat dissipation block 3 is against one end of the sensor 20 welding diaphragm, the pressure ring 1 is against one end of the sensor 20 non-welding area, and the heat dissipation ring 2 is against the side of the sensor 20, so as to achieve heat dissipation at multiple locations of the sensor 20 diaphragm welding, thereby improving the heat dissipation function of the sensor 20 diaphragm welding, preventing local thermal stress concentration, and reducing the deformation of the corrugated diaphragm during welding. At the same time, the outer surface of the heat dissipation ring 2 is provided with an inclined surface 21, so as to ensure that the welding gun head 40 has sufficient operating space while increasing the heat dissipation contact surface area as much as possible.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] 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, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] 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.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0034] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A heat dissipation device for sensor diaphragm welding, characterized in that: include: A pressure ring, the pressure ring abutting against one end of the non-welding area of ​​the sensor; A heat dissipation ring, the heat dissipation ring is connected to the pressure ring, the heat dissipation ring is against the side of the sensor, and the outer surface of the heat dissipation ring is provided with an inclined surface to make way for the welding gun head; A heat sink block is arranged opposite to the pressure ring, and the heat sink block abuts against one end of the sensor welding diaphragm.

2. A heat dissipation device for sensor diaphragm welding according to claim 1, characterized in that: The heat dissipation block is provided with a communication hole connected to the atmosphere.

3. A heat dissipation device for sensor diaphragm welding according to claim 2, characterized in that: The communication hole includes a first communication hole axially arranged on the heat dissipation block and a second communication hole radially arranged on the heat dissipation block, and the first communication hole is connected to the second communication hole.

4. A heat dissipation device for sensor diaphragm welding according to claim 1, characterized in that: The heat dissipation block is connected to the limiting end of the laser welding machine through a bearing.

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