A pressure-sensitive diaphragm welding tooling

Abstract

The present invention discloses a welding tooling for a pressure sensing diaphragm, which includes a substrate, a material supporting boss, a positioning adjustment hole, a main positioning pin, a pressure sensing diaphragm positioning seat, a negative pressure suction hole, a negative pressure channel, and a negative pressure interface. A material supporting boss formed integrally is provided at the center of the upper surface of the substrate. A positioning adjustment hole is vertically opened at the center of the material supporting boss. A main positioning pin is inserted into the positioning adjustment hole, and the main positioning pin protrudes from the upper surface of the material supporting boss. A pressure sensing diaphragm positioning seat is further provided on the upper surface of the material supporting boss. Through the above manner, the present invention provides a welding tooling for a pressure sensing diaphragm. Particularly aiming at the problems of large positioning error and high positioning operation difficulty in fixing and positioning small-size diaphragm materials before welding, a special positioning tooling is designed, which can accurately control the relative position between the pressure sensing diaphragm and the main diaphragm seat, simplify the manual positioning operation procedures, and improve the processing efficiency and the qualified product rate of the product.

Description

Technical Field

[0001] The present invention relates to the field of tooling, and particularly to a welding tooling for a pressure sensing diaphragm. Background Art

[0002] The pressure sensing diaphragm is a circular and small-sized material, which needs to be welded on the diaphragm main seat to obtain a complete pressure sensing finished part. In the prior art, the two are usually aligned and combined by manually holding tweezers. Due to the influence of environmental factors, the diaphragm may be displaced during the welding process, resulting in defective parts being scrapped. Summary of the Invention

[0003] The main technical problem to be solved by the present invention is to provide a welding tooling for a pressure sensing diaphragm. Particularly aiming at the problems of large positioning error and high positioning operation difficulty for small-sized diaphragm materials before welding, a special positioning tooling is designed, which can accurately control the relative position of the pressure sensing diaphragm and the diaphragm main seat, simplify the manual positioning operation procedures, and improve the processing efficiency and the yield rate of products.

[0004] To solve the above technical problem, a technical solution adopted by the present invention is: providing a welding tooling for a pressure sensing diaphragm, including a substrate, a material supporting convex platform, a positioning adjustment hole, a main positioning pin, a pressure sensing diaphragm positioning seat, a negative pressure suction hole, a negative pressure channel, and a negative pressure interface. A material supporting convex platform integrally formed is arranged at the center of the upper surface of the substrate. A positioning adjustment hole is vertically opened at the center of the material supporting convex platform. A main positioning pin is inserted into the positioning adjustment hole, and the main positioning pin protrudes from the upper surface of the material supporting convex platform. A pressure sensing diaphragm positioning seat is further arranged on the upper surface of the material supporting convex platform. A negative pressure suction hole is opened on the pressure sensing diaphragm positioning seat. A negative pressure channel connecting the negative pressure suction hole is opened inside the material supporting convex platform and the substrate, and the negative pressure channel leads out a negative pressure interface from the side wall of the substrate.

[0005] In a preferred embodiment of the present invention, the positioning adjustment hole is a linear hole, and the length of the positioning adjustment hole does not exceed 2 times the diameter of the positioning pin.

[0006] In a preferred embodiment of the present invention, the pressure sensing diaphragm positioning seat is in the shape of a flat cylinder, and the negative pressure suction holes are evenly distributed on the upper end surface of the pressure sensing diaphragm positioning seat in a centrosymmetric manner.

[0007] In a preferred embodiment of the present invention, secant cutting surfaces are arranged on both symmetric sides of the material supporting convex platform, and substrate mounting holes are opened on the substrate opposite to the secant cutting surfaces.

[0008] In a preferred embodiment of the present invention, the negative pressure channel is in an L-shaped tubular form, a pipe neck is provided at the corner position of the negative pressure channel, and the diameter of the pipe neck is smaller than the diameter of the negative pressure channel.

[0009] The beneficial effects of the present invention are as follows: A pressure sensing diaphragm welding tooling provided by the present invention specifically aims at the problems of large fixing and positioning errors and high positioning operation difficulty for small-sized diaphragm materials before welding. A special positioning tooling is designed, which can accurately control the relative position between the pressure sensing diaphragm and the diaphragm main seat, simplify the manual positioning operation procedures, and improve the processing efficiency and yield rate of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:

[0011] Figure 1 is the overall structure diagram of a pressure sensing diaphragm welding tooling of the present invention;

[0012] Figure 2 is the partial enlarged structure diagram of the negative pressure channel of a pressure sensing diaphragm welding tooling of the present invention;

[0013] Figure 3 is the product assembly case structure diagram of a preferred embodiment of a pressure sensing diaphragm welding tooling of the present invention;

[0014] Figure 4 is the product detailed structure diagram of a preferred embodiment of a pressure sensing diaphragm welding tooling of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0016] As Figures 1-4 shown, the embodiments of the present invention include:

[0017] A pressure - sensitive diaphragm welding tooling, including a substrate 1, a material supporting boss 2, a positioning and adjusting hole 3, a main positioning pin 4, a pressure - sensitive diaphragm positioning seat 5, a negative - pressure suction hole 6, a negative - pressure channel 7, and a negative - pressure interface 8. In the center of the upper surface of the substrate 1, there is an integrally formed material supporting boss 2. Vertically in the center of the material supporting boss 2, there is a positioning and adjusting hole 3. A main positioning pin 4 is inserted into the positioning and adjusting hole 3, and the main positioning pin 4 protrudes from the upper surface of the material supporting boss 2. On the upper surface of the material supporting boss 2, there is also a pressure - sensitive diaphragm positioning seat 5. The pressure - sensitive diaphragm positioning seat 5 is provided with negative - pressure suction holes 6. Inside the material supporting boss 2 and the substrate 1, there is a negative - pressure channel 7 connecting the negative - pressure suction holes 6, and the negative - pressure channel 7 leads out a negative - pressure interface 8 from the side wall of the substrate 1.

[0018] Among them, the positioning and adjusting hole 3 is a linear hole, and the length of the positioning and adjusting hole 3 does not exceed 2 times the diameter of the positioning pin.

[0019] Furthermore, the pressure - sensitive diaphragm positioning seat 5 is in the shape of a flat cylinder, and the negative - pressure suction holes 6 are evenly distributed on the upper end surface of the pressure - sensitive diaphragm positioning seat 5 in a centrosymmetric manner.

[0020] Furthermore, on both symmetric sides of the material supporting boss 2, there are secant cutting surfaces 211, and on the substrate 1 opposite to the secant cutting surfaces 211, there are substrate 1 mounting holes.

[0021] Furthermore, the negative - pressure channel 7 is in the shape of an L - shaped tube, and at the corner position of the negative - pressure channel 7, there is a tube neck, and the diameter of the tube neck is smaller than the diameter of the negative - pressure channel 7.

[0022] As Figure 3 shown, the pressure - sensitive diaphragm 100 needs to be welded to the diaphragm main seat 111. The diaphragm main seat 111 is a circular disc, and there is a positioning hole at the center of the circle. As Figure 4 shown, there is also a counterbore on the circular disc for welding the pressure - sensitive diaphragm 100. When using the tooling, first, the center of the diaphragm main seat 111 is correspondingly sleeved on the main positioning pin 4, and then the diaphragm main seat 111 is rotated so that the counterbore is aligned with the pressure - sensitive diaphragm 100 positioning seat 5. Then, the pressure - sensitive diaphragm 100 is placed in the counterbore. At this time, the negative - pressure channel 7 creates a negative - pressure environment, and the negative - pressure suction holes 6 firmly suck the pressure - sensitive diaphragm 100. Thus, the relative position between the pressure - sensitive diaphragm 100 and the diaphragm main seat 111 can be kept constant. Then, the welding process can be executed to obtain the finished product.

[0023] In summary, the present invention provides a welding tooling for a pressure sensing diaphragm 100. Specifically, aiming at the problems of large fixing and positioning errors and high positioning operation difficulty of small-sized diaphragm materials before welding, a special positioning tooling is designed, which can accurately control the relative position between the pressure sensing diaphragm 100 and the diaphragm main seat 111, simplify the manual positioning operation procedures, and improve the processing efficiency and yield rate of products.

[0024] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A pressure - sensitive diaphragm welding tooling, characterized in that, it includes a substrate, a material supporting boss, a positioning and adjusting hole, a main positioning pin, a pressure - sensitive diaphragm positioning seat, a negative - pressure suction hole, a negative - pressure channel, a negative - pressure interface, a pressure - sensitive diaphragm, and a diaphragm main seat. A material supporting boss integrally formed is provided at the center of the upper surface of the substrate. A positioning and adjusting hole is vertically opened at the center of the material supporting boss. A main positioning pin is inserted into the positioning and adjusting hole, and the main positioning pin protrudes from the upper surface of the material supporting boss. A pressure - sensitive diaphragm positioning seat is further provided on the upper surface of the material supporting boss. A negative - pressure suction hole is opened on the pressure - sensitive diaphragm positioning seat. A negative - pressure channel connecting the negative - pressure suction hole is opened inside the material supporting boss and the substrate, and the negative - pressure channel leads out a negative - pressure interface from the side wall of the substrate. The diaphragm main seat is a circular disc with a positioning hole at the center, and a counterbore for welding the pressure - sensitive diaphragm is reserved on the circular disc.

2. The pressure - sensitive diaphragm welding tooling according to claim 1, characterized in that, the positioning and adjusting hole is a linear hole, and the length of the positioning and adjusting hole does not exceed 2 times the diameter of the positioning pin.

3. The pressure - sensitive diaphragm welding tooling according to claim 1, characterized in that, the pressure - sensitive diaphragm positioning seat is in the shape of a flat cylinder, and the negative - pressure suction holes are evenly distributed on the upper end surface of the pressure - sensitive diaphragm positioning seat in a centrosymmetric manner.

4. The pressure - sensitive diaphragm welding tooling according to claim 1, characterized in that, secant cutting surfaces are provided on both symmetric sides of the material supporting boss, and substrate mounting holes are opened on the substrate opposite to the secant cutting surfaces.

5. The pressure - sensitive diaphragm welding tooling according to claim 1, characterized in that, the negative - pressure channel is in the shape of an L - shaped tube, a tube neck is provided at the corner position of the negative - pressure channel, and the diameter of the tube neck is smaller than the diameter of the negative - pressure channel.

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