Chromium plating clamp for valve rod

Abstract

The utility model discloses a valve rod chromium plating clamp which comprises a hanging tool longitudinal support, hanging tool transverse supports are fixed to the two ends of the hanging tool longitudinal support respectively, insulating plates are arranged at the outer ends of the hanging tool transverse supports and fixed to the hanging tool transverse supports through screws, and the hanging tool longitudinal support, the hanging tool transverse supports and the insulating plates form a fixed frame structure. Through holes are correspondingly formed in the hanging tool longitudinal support and the insulating plate, the rod head of the valve rod is inserted into the insulating plate from the hanging tool longitudinal support, the rod cap of the valve rod abuts against the outer portion of the hanging tool longitudinal support, and an electroplating area is formed between the hanging tool longitudinal support and the insulating plate; a rod cap cover plate is bolted to the side, where the rod cap is located, of the hanging tool longitudinal bracket through a screw rod; the top of the hanger longitudinal bracket or the hanger transverse bracket is connected with a conductive hook; the outer surfaces of the hanging tool longitudinal support, the hanging tool transverse support and the rod cap cover plate are all coated with insulating powder glue. During use, an electroplated part is not required to be effectively shielded and protected, the whole valve is electroplated in an immersion manner, a plating tank is fully utilized, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve rod processing technical field, especially a valve rod chromium plating fixture. BACKGROUND

[0002] Valve rod is an important part or key part inside engine, and its role is to support the movement of valve. Usually, valve rod is located between cylinder cover and cylinder body of engine, and its specific position is different due to the type and design of engine, but it is generally on the cylinder cover or cylinder body. In most cases, valve rod will pass through a sealed friction pair hole on the cylinder cover or cylinder body to support the movement of valve.

[0003] Valve rod supporting reciprocating movement part needs to be plated with chromium to improve wear resistance, so as to stabilize the running performance of engine. However, valve rod chromium plating belongs to local electroplating, and the setting of fixture is very important. The original local chromium plating of valve rod adopts the method of arranging the fixture above the liquid level. The valve cap does not require the electroplated part to be arranged above the liquid level. The plating tank cannot be fully utilized, and the production efficiency is low. The non-plated part of valve is prone to yellowing due to the action of electric power line. SUMMARY

[0004] The utility model discloses a valve rod chromium plating fixture.

[0005] Technical scheme: the utility model discloses a valve rod chromium plating fixture, including the fixture vertical support, the both ends of fixture vertical support are fixed with the fixture horizontal support respectively, the outer end of fixture horizontal support is equipped with the insulating plate parallel with fixture vertical support, is fixed with the fixture horizontal support through screw rod, and the fixture vertical support, fixture horizontal support and insulating plate form fixed frame structure;

[0006] The through hole is correspondingly set in the fixture vertical support and the insulating plate, the rod head of valve rod is inserted into the insulating plate from the fixture vertical support, and the rod cap is arranged on the outside of the fixture vertical support. The electroplating area is formed between the fixture vertical support and the insulating plate.

[0007] The rod cap cover plate is connected to the side where the rod cap is located through the screw rod.

[0008] The electrically conductive hook is connected to the top of the fixture vertical support or the fixture horizontal support.

[0009] The outer surface of the fixture vertical support, the fixture horizontal support and the rod cap cover plate is coated with insulating powder glue.

[0010] Further, the outer side of the insulating plate is fixed with the steel plate support, and the outer surface of the steel plate support is coated with insulating powder glue.

[0011] Furthermore, both the insulating plate and the steel plate bracket are threaded onto the screw, and their positions are adjusted according to the electroplating area, and they are fixed with inner and outer nuts.

[0012] Furthermore, the insulating board is an epoxy resin board.

[0013] Furthermore, insulating adhesive is applied to certain parts of the screw component's surface.

[0014] Furthermore, multiple valve stems are longitudinally spaced on the longitudinal bracket of the mounting bracket and the insulating plate.

[0015] Beneficial effects: Compared with the prior art, the advantages of this utility model are: it does not require effective shielding protection of the electroplated part during use, the valve is immersed in electroplating, the plating tank is fully utilized, and the production efficiency is improved; at the same time, the yellowing phenomenon of the non-plated part of the valve stem is overcome by the protective design and effective shielding of the hanger. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0017] like Figure 1 The chrome-plated valve stem clamp shown includes a longitudinal bracket 1, with a transverse bracket 2 fixed at both ends of the longitudinal bracket 1. An insulating plate 3 parallel to the longitudinal bracket 1 is provided at the outer end of the transverse bracket 2 and is fixed to the transverse bracket 2 by a screw. The longitudinal bracket 1, the transverse bracket 2 and the insulating plate 3 form a fixed frame structure.

[0018] The longitudinal bracket 1 of the hanger and the insulating plate 3 have corresponding through holes. The rod head of the valve stem 4 is inserted into the insulating plate 3 through the longitudinal bracket 1 of the hanger, and its rod cap abuts against the outside of the longitudinal bracket 1 of the hanger. An electroplating area is formed between the longitudinal bracket 1 of the hanger and the insulating plate 3. A steel plate bracket 7 is fixed on the outside of the insulating plate 3, which supports the overall frame on the one hand and seals the through holes of the insulating plate 3 on the other hand.

[0019] The longitudinal bracket 1 of the mounting bracket is located on the side where the valve stem cap is located and is bolted to the valve stem cap 5 by a screw, thereby isolating the electric field lines from the valve stem cap.

[0020] The top of the hanging bracket 1 or the hanging bracket 2 is connected to a conductive hook 6, which is made of copper.

[0021] The longitudinal bracket 1, the transverse bracket 2, the pole cap 5, and the steel plate bracket 7 of the hanging fixture are all coated with insulating powder adhesive, with a thickness of 2-3 mm, as shown by the dotted line on the outer contour in the figure.

[0022] The insulating plate 3 and the steel plate support 7 are both threaded on the screw rod, the position is adjusted according to the electroplating part, the inner and outer nuts are fixed, and the local surface of the screw rod part is covered with insulating glue.

[0023] The valve stem 4 is longitudinally spaced on the hanger longitudinal support 1 and the insulating plate 3.

Claims

1. A valve stem chrome plating fixture, characterized by: The hanging tool longitudinal support (1) is fixed with a hanging tool transverse support (2) at both ends, the outer end of the hanging tool transverse support (2) is provided with an insulation plate (3) parallel to the hanging tool longitudinal support (1) and is fixed with the hanging tool transverse support (2) through a screw rod, and the hanging tool longitudinal support (1), the hanging tool transverse support (2) and the insulation plate (3) form a fixed frame structure. The hanging tool longitudinal support (1) and the insulation plate (3) are provided with through holes, the rod head of the valve rod (4) is inserted into the insulation plate (3) from the hanging tool longitudinal support (1), the rod cap is arranged outside the hanging tool longitudinal support (1), and an electroplating area is formed between the hanging tool longitudinal support (1) and the insulation plate (3); The hanging tool longitudinal support (1) is provided with a rod cap cover plate (5) on the side where the rod cap is arranged and is connected through a screw rod; The hanging tool longitudinal support (1) or the hanging tool transverse support (2) is provided with a conductive hook (6) at the top; The outer surfaces of the hanging tool longitudinal support (1), the hanging tool transverse support (2) and the rod cap cover plate (5) are coated with insulating powder glue.

2. The valve stem chrome plating fixture of claim 1, wherein: The outer side of the insulation plate (3) is fixed with a steel plate support (7), and the outer surface of the steel plate support (7) is coated with insulating powder glue.

3. The valve stem chrome plating fixture of claim 2, wherein: The insulation plate (3) and the steel plate support (7) are arranged on the screw rod, the position is adjusted according to the electroplating part, and the inner and outer nuts are fixed.

4. The valve stem chrome plating fixture of claim 1, wherein: The insulation plate (3) is an epoxy resin plate.

5. The valve stem chrome plating fixture of claim 1, wherein: The local surface of the screw rod part is coated with insulating glue.

6. The valve stem chrome plating fixture of claim 1, wherein: The valve rod (4) is arranged in multiple numbers on the hanging tool longitudinal support (1) and the insulation plate (3) in a longitudinal direction.

Images