Riveting head of electromagnetic valve riveting tool

Abstract

The utility model relates to a riveting head of an electromagnetic valve riveting tool, and belongs to the field of assembly tools of brake-by-wire electromagnetic valves. Comprising an assembling part and a riveting part, an inward blanking angle is arranged on a riveting ring surface of the riveting part, and an outward material returning angle is arranged outside the lower end of the riveting part. The utility model has the advantages that the structure is novel, the material returning angle and the blanking angle are increased, the blanking angle is used for reducing the blanking contact area, the blanking pressure is increased under the condition of the same punching force, so that the aluminum valve body is easier to deform, the better riveting effect is further achieved, the riveting uniformity and the sealing performance are ensured, and the material returning angle is used for reducing the material returning angle after the riveting is completed. When the riveting head returns, the aluminum valve body is not driven, and the material returning difficulty can be effectively avoided; in this way, riveting of the electromagnetic valve can be better completed, and braking leakage caused by poor riveting is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of assembly tools for wire-controlled braking solenoid valves, and particularly relates to a riveting head of a solenoid valve riveting tooling. Background Art

[0002] The main part of the existing tooling for wire-controlled braking solenoid valve assembly is the riveting head. The process of riveting a conventional solenoid valve to an aluminum valve body is that the riveting tooling drives the riveting head to press downwards. The force acts on the riveting head, and the riveting head acts on the aluminum valve body, causing the aluminum valve body to deform. The deformed aluminum valve body envelopes the solenoid valve, forming a sealing ring band between the aluminum valve body and the solenoid valve, thereby achieving the technical purpose. Generally speaking, the most important requirement for the solenoid valve riveting process is the sealing performance. If the riveting state is not ideal, it will cause hydraulic leakage and then lead to braking failure.

[0003] With the development of the automotive industry, wire control braking has been gradually applied in the automotive industry. Furthermore, solenoid valve riveting has become an important process in wire control braking manufacturing. Currently, when performing solenoid valve riveting, a circular riveting head is used, and problems such as uneven riveting and difficult material withdrawal after riveting often occur, resulting in poor riveting of the solenoid valve and braking leakage. Summary of the Invention

[0004] The utility model provides a riveting head of a solenoid valve riveting tooling to solve the problem of braking failure caused by poor solenoid valve riveting and poor material withdrawal.

[0005] The technical solution adopted by the utility model is: it includes an assembly part and a riveting part. There is an inward blanking angle on the riveting ring surface of the riveting part, and an outward material withdrawal angle on the outer surface of the lower end of the riveting part.

[0006] The blanking angle is 3 degrees.

[0007] The material withdrawal angle is 8 degrees.

[0008] The utility model has the advantages of novel structure, increasing the material withdrawal angle and the blanking angle. The blanking angle is to reduce the blanking contact area. Under the condition of the same punching pressure, the punching pressure is increased, making it easier for the aluminum valve body to deform, thereby achieving a better riveting effect, ensuring uniform riveting and sealing performance. Increasing the material withdrawal angle is to enable the riveting head not to drive the aluminum valve body when returning after riveting, which can effectively avoid difficult material withdrawal; in this way, the solenoid valve riveting can be better completed, and braking leakage caused by poor riveting can be avoided. Description of the Drawings

[0009] Figure 1 is the structural schematic diagram of the utility model;

[0010] Figure 2 is Figure 1 the enlarged view of part A of

[0011] Figure 3 It is a schematic diagram when the riveting part just contacts the aluminum valve body;

[0012] Figure 4 It is a state diagram when the riveting work is completed;

[0013] Figure 5 It is a schematic diagram that the solenoid valve in the riveting finished product is completely enveloped by the aluminum valve body. Specific implementation mode

[0014] As Figure 1 、 2 shown, it includes an assembly part 1 and a riveting part 2. There is an inward blanking angle 201 on the riveting toroidal surface of the riveting part 2, and an outward stripping angle 202 on the outside of the lower end of the riveting part 2.

[0015] The blanking angle 201 is 3 degrees.

[0016] The stripping angle 202 is 8 degrees.

[0017] During work, the assembly part 1 of the riveting head cooperates with the hydraulic press. The hydraulic press presses down to make the riveting part 2 contact the aluminum valve body 3, cut the aluminum valve body metal, envelop the solenoid valve 4, and play a sealing role; after the riveting work is completed, the hydraulic press lifts up, driving the riveting head to move up to complete the stripping work. The specific process is as follows:

[0018] As Figure 3 shown, it is a schematic diagram when the riveting part 2 just contacts the aluminum valve body 3. It can be seen that due to the existence of the blanking angle 201, when the riveting part 2 contacts the aluminum valve body, it first contacts at point B, which will generate a large pressure, which is beneficial to deforming the aluminum valve body material and then forming a sealing band that better conforms to the design; through experiments, a blanking angle of 3 degrees can not only increase the blanking pressure but also ensure the strength of the riveting part.

[0019] As Figure 4 shown, it is a state diagram when the riveting work is completed. The aluminum valve body 3 contacts the outer bottom of the riveting part 2 at point B, and the stripping is easy. Through experiments, a stripping angle of 8 degrees will not lift the aluminum valve body.

[0020] As Figure 5 shown, in the riveting finished product, the solenoid valve 4 is completely enveloped by the aluminum valve body 3, and the riveting points are uniform, and the riveting effect can be achieved.

Claims

1. A rivet head for a solenoid valve riveting tool, comprising an assembly part and a riveting part, characterized in that: The riveting ring surface of the riveted part has an inward punching angle, and the outer side of the lower end of the riveted part has an outward stripping angle.

2. The rivet head of the solenoid valve riveting tool according to claim 1, characterized in that: The punching angle is 3 degrees.

3. The rivet head of the solenoid valve riveting tool according to claim 1, characterized in that: The material withdrawal angle is 8 degrees.

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