CN203599747U

CN203599747U - Welding tool for centrifugal fan impeller

Info

Publication number: CN203599747U
Application number: CN201320643979.5U
Authority: CN
Inventors: 蒋洪涛; 孔黎平; 顾梁波; 许方江; 汪尧
Original assignee: SHANGYU SPECIAL FANS CO Ltd
Current assignee: Zhejiang Shangfeng high tech special wind industry Co.,Ltd.
Priority date: 2013-10-18
Filing date: 2013-10-18
Publication date: 2014-05-21
Anticipated expiration: 2023-10-18

Abstract

The utility model discloses a welding tool for a centrifugal fan impeller. The welding tool comprises an upper top tray, a lower top ring and a top pressing ring. The top pressing ring is matched with a front cover of the impeller to be welded. The top of the top pressing rind is provided with an oblique plane, the position, close to the center, of the oblique plane is high, the position, far away from the center, of the oblique plane is low, and the oblique plane has an outward-protruding arc. According to the welding tool for the centrifugal fan impeller, on the premise that a general upper top tray and a general lower top ring are adopted, the front cover of the impeller and vanes can be welded conveniently as long as by providing top pressing rings for impellers with different standards, the operation is convenient, and high die costs needed in a traditional manufacturing mode can be greatly saved.

Description

A kind of welding tooling of centrifugal blower fan blade wheel

Technical field

The utility model relates to a kind of frock of machining, particularly relates to a kind ofly adding for centrifugal blower fan blade wheel is carried out to assemble welding the frock of using man-hour.

Background technology

Centrifugal blower is a kind of conventional ventilation equipment, it is made up of impeller, spiral case and motor conventionally, impeller is as the core component of centrifugal blower, its conventionally by shroud, hub disk and be connected to before and after dish between blade form, conventionally, blade and front and back dish link together by welding manner, so it is the critical process that impeller is made that centrifugal blower fan blade wheel is welded.Because hub disk is generally tabular, shroud has certain arc, so, in the time of welding centrifugal blower fan blade wheel, first blade is welded on hub disk according to the order of sequence, again shroud and blade are welded mutually, in the time making shroud, also need on press, the arc of shroud be extruded, like this, the centrifugal blower of each specification and model needs to have the mould of a compacting shroud in the time making impeller, and in the time that impeller specification is larger, the cost of manufacture of mould can be very large.

Utility model content

For overcoming above-mentioned defect, the utility model aims to provide a kind of general centrifugal blower fan blade wheel welding tooling, and it both can easily weld centrifugal blower fan blade wheel, has greatly saved cost of manufacture because making special mould simultaneously.

For achieving the above object, the technical solution adopted in the utility model is: a kind of welding tooling of centrifugal blower fan blade wheel, comprise upper plate, lower collar and top trim ring, and the impeller shroud of described top trim ring and required welding matches.

The top of described top trim ring has an inclined-plane, and described inclined-plane is high, low away from center near center, and described inclined-plane has the arc of evagination.

Adopt centrifugal blower fan blade wheel welding tooling of the present utility model, adopting under general upper plate and lower collar prerequisite, only need to be equipped with a top trim ring to the impeller of every kind of specification, shroud to impeller and blade are welded to connect easily, both convenient, greatly save again a large amount of die costs that traditional fabrication mode needs.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is work structuring schematic diagram of the present utility model;

Fig. 3 is top of the present utility model trim ring cross section structure schematic diagram.

In figure: 1-upper plate, collar under 2-, 3-top trim ring, 4-shroud, 5-hub disk, 6-blade, 7-inclined-plane.

The specific embodiment

As shown in Figure 1, the utility model discloses a kind of welding tooling of centrifugal blower fan blade wheel, comprise upper plate 1, lower collar 2 and top trim ring 3, described top trim ring 3 matches with the impeller shroud 4 of required welding.Described upper plate 1 is fixed on the drift of press, described lower collar 2 is fixed on the work top of press, simultaneously, top described in the utility model trim ring 3 can have several, the specification of each top trim ring 3 matches with corresponding impeller specification respectively, specifically, be exactly that the diameter of top trim ring 3 and the central diameter of impeller shroud 4 are roughly the same.

As shown in Figure 3, in order to match with the shape of shroud 4, simultaneously also reduce top trim ring 3 damaging to shroud 4 outer surfaces while pressing in order to push up, the top of described top trim ring 3 has an inclined-plane 7, described inclined-plane 7 is high, low away from center near the center of top trim ring 3, and described inclined-plane 7 has the arc of evagination.Described curve slope 7 matches substantially with the inclined-plane 7 of shroud 4.

The welding tooling of centrifugal blower fan blade wheel of the present utility model, its using method is:

Before concrete operations, also need to make in advance the semi-finished product of shroud 4, make what a Frusto-conical shroud 4 semi-finished product with steel plate, and hub disk 5 and blade 6 are welded together, Frusto-conical shroud 4, hub disk 5 all adopt existing usual manner with the welding of blade 6, no longer describe in detail here.

Step 1: prepare: upper plate 1 is fixed on the drift of press, lower collar 2 is fixed on the table top of press, described upper plate 1 and lower collar 2 be adjusted to dead in line; Select the top trim ring 3 matching with the impeller shroud 4 of required welding, be placed on above lower collar 2, and adjust top trim ring 3 positions, make the dead in line of itself and lower collar 2;

Step 2: press on top, as shown in Figure 2, shroud 4 is placed on top trim ring 3, and now, the inclined-plane 7 of top trim ring 3 should be positioned at the central ring place on shroud 4 inclined-planes 7; And the hub disk 5 having welded together is placed on shroud 4 with blade 6, be adjusted to accurate location, open press, drift drives upper plate 1 descending, the hub disk 5 welding together is pressed down with blade 6, top trim ring 3 presses to blade 6 the centre one of shroud 4 circle, when top trim ring 3 encloses the centre one of shroud 4 while offseting with blade 6, stops the descending of drift; The arc that this one end offseting due to blade 6 and shroud 4 is indent, and the inclined-plane 7 of top trim ring 3 is positioned at the lowermost end of the arc of this indent, like this, when top trim ring 3 encloses the centre one of shroud 4 while offseting with blade 6, whole shroud 4 and blade 6 have offseted substantially;

Step 3: welding, the state that offsets of maintenance shroud 4 and blade 6, operating personnel weld shroud 4 and blade 6, after completing the welding of all blades 6 and shroud 4, open press and make drift up, the impeller of moulding is taken off from lower collar 2, complete the welding of whole impeller.

Claims

1. the welding tooling of a centrifugal blower fan blade wheel, it is characterized in that comprising upper plate (1), lower collar (2) and top trim ring (3), described top trim ring (3) matches with the impeller shroud (4) of required welding, the top of described top trim ring (3) has an inclined-plane (7), described inclined-plane (7) is high, low away from center near center, and described inclined-plane (7) have the arc of evagination.