JPH09310950A - Auger for ice making machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate preheating and slow cooling works, shorten a working time and reduce the amount of heat for preheating by a method wherein preheating upon powder padding welding, becoming the base of non-bearing part on a material constituting the shaft unit of an auger for an ice making machine and slow cooling after forming the powder padding welding part are permitted to be effected by a preheating furnace and a slow cooling furnace, which are provided with a small size. SOLUTION: A first material 21, constituting an auger main body 11, and second materials 22, 23, constituting respective shaft units 12, 13, are formed separately to form the auger main body 11 and respective shaft units 12, 13 of these constituting material 22, 23 while auger is constituted of the auger main body 11 and respective shaft units 12, 13, connected to respective end parts of the auger main body 11 through pressure welding by friction. In this case, the second materials 22, 23 are preheated and cooled slowly under a condition independent from the first material 21.

Description

Detailed Description of the Invention

[0001]

The present invention relates to an auger for an ice machine.

[0002]

2. Description of the Related Art Generally, an auger for an ice making machine has an auger body having a spiral blade portion protruding in a spiral shape on an outer peripheral surface thereof, and a bearing which is rotatably supported at each end of the auger body. It is composed of a pair of shafts having a portion,
A connecting portion for spline coupling to the drive shaft is provided on the tip end side of one shaft portion.

In the auger, however, the first base material forming the auger body and the second base material forming the shafts are frictionally pressure-bonded to each other at their end portions, and then The first base metal is subjected to cutting to form an auger body having a spiral blade portion on the outer peripheral surface, and each second base metal is powder overlay welding using alloy powder on the outer peripheral surface. And grinding the outer peripheral surface of the powder overlay welding portion to form a shaft portion having a bearing portion that is wear-resistant and corrosion-resistant. When forming this bearing part, a means is adopted to prevent pre-heating to about 300 ° C prior to powder overlay welding to prevent coating cracks in the powder overlay weld, and to gradually cool after powder overlay welding. Has been.

[0004]

By the way, in the auger, the preheating prior to the powder overlay welding when forming the bearing portion and the gradual cooling after the powder overlay welding are the first.
The base material and the second base material are joined together. For this reason, in such means, there is a large portion for preheating and slow cooling compared to the size of the bearing portion, and it is necessary to employ a large preheating furnace and cooling furnace, and it takes a considerable time for preheating and slow cooling. In addition, there is a problem that a large amount of heat is required for preheating and a large amount of labor is required for preheating work and slow cooling work. Therefore, it is an object of the present invention to solve these problems.

[0005]

According to the present invention, there is provided an auger main body having a spiral blade portion which spirally protrudes on a peripheral surface thereof, and a supported bearing rotatably provided at each end of the auger main body. In an auger for an ice maker having a pair of shaft portions having parts, a first base material forming the auger body and a second base material forming each shaft portion are separately formed, and The auger body and the shaft portion are formed from each of the constituent base materials, and the shaft portion is frictionally pressure-bonded to each end portion of the auger body, or these second configurations While forming each of the shaft portions with a base material,
It is characterized in that each of these shaft portions is frictionally pressure-bonded to each end portion of the first base material to be joined to form an auger main body with the first base material.

[0006]

In the auger for an ice maker having such a structure, the preheating and slow cooling for forming the bearing portion may be performed on the second base material, and the preheating and slow cooling portions are small and preheated. The furnace and the cooling furnace can be small in size, the time required for preheating and gradual cooling can be shortened, the amount of heat for preheating can be small, and a large amount of labor is not required for preheating and gradual cooling operations.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows an example of an auger for an ice making machine according to the present invention. The auger 10 is an auger body 11
And shaft portions 12 and 13 which are frictionally pressure-bonded to the respective ends of the auger body 11 and are joined thereto.

The auger body 11 is provided with a spiral blade portion 11b on the outer periphery of a cylindrical body 11a, and each shaft portion 12, 13 is a cylindrical body 12a.
a and 13a are provided with bearing portions 12b and 13b made of a wear-resistant and corrosion-resistant coating layer provided in the central portion in the axial direction, and one shaft portion 12 is provided with a spline portion on the tip side thereof. The connecting portion 12c is formed.

In each component of the auger 10, the auger body 11 is formed by a first base material 21, and the shaft portions 12, 13 are formed by second base materials 22, 23, as shown in FIG. Is formed. The second base materials 22 and 23 are frictionally pressure-bonded to the respective ends of the first base material 21 and are joined to each other, but prior to the joining, the alloy powder is provided in the annular recesses 22a and 23a provided in the intermediate portion in the axial direction. Powder overlay welding is performed using the body.

In FIG. 3, the second base material constituting the shaft portion 12 is shown.
The state before the base material 22 is joined to the first base material 21 is shown. A portion 22b in the figure indicates a shrinkage margin when frictionally pressure-welded.

Further, the first base material 21 and the second base material 22,
In the state in which 23 is joined, the outer peripheral surface of the first base material 21 is cut to form the spiral blade portion 11b, and the outer peripheral surface of the powder buildup weld portion of the second base materials 22 and 23 is formed. The bearing portions 12b and 13b are formed by grinding, and the outer peripheral surface on the tip end side of one of the second base materials 22 is splined to form the connection portion 12c.

As a result, the first base material 21 becomes the auger body 1
1 and each of the second base materials 22 and 23 has a shaft portion 1
2 and 13.

In the auger 10, however, the second base materials 22 and 23 forming the respective shaft portions 12 and 13 are the first
Prior to joining to the base material 21, the bearing portions 12b, 1
Powder build-up welding is performed to form 3b. For the second base materials 22 and 23, about 30 before powder overlay welding
It is preheated to 0 ° C. to prevent the occurrence of cracks after the powder overlay welding, and a means for gradually cooling after the powder overlay welding is adopted.

Therefore, in the auger 10, the preheating and slow cooling for forming the bearing portions 12b and 13b may be performed on the second base materials 22 and 23, so that the preheating and slow cooling portions are small, The preheating furnace and cooling furnace can be small in size, the time required for preheating and slow cooling can be shortened, the amount of heat for preheating can be small, and a large amount of labor is not required for preheating work and slow cooling work. There are advantages.

[Brief description of drawings]

FIG. 1 is a side view of an auger for an ice making machine according to the present invention.

FIG. 2 is a side view showing a state in which first and second base materials forming the same auger are joined to each other.

FIG. 3 is a side view showing a state before the powder overlay welding of the second base material forming the shaft portion of the auger.

[Explanation of symbols]

10 ... Auger, 11 ... Auger main body, 11b ... Spiral blade part, 12, 13 ... Shaft part, 12b, 13b ... Bearing part,
12c ... Connection part, 21 ... First base material, 22, 23 ... Second
Base material, 22a, 23a ... annular recess.

Claims (2)

[Claims] 1. An auger body having a spiral blade portion that spirally protrudes on an outer peripheral surface thereof, and a pair of shaft portions having bearing portions provided rotatably at respective end portions of the auger body. In the provided auger for an ice machine, the first base material forming the auger body and the second base material forming the shafts are separately formed, and the constituent base materials are used to form the auger. An auger for an ice maker, wherein an auger body and the shaft portions are formed, and the shaft portions are frictionally pressure-bonded to respective ends of the auger body. 2. An auger body having a spiral blade portion that spirally protrudes on an outer peripheral surface, and a pair of shaft portions having bearing portions provided rotatably on the respective end portions of the auger body. In the provided ice machine auger, the first base material forming the auger body and the second base material forming the shafts are separately formed, and the second constituent base materials are formed. To form each of the shaft portions, and to connect each of the shaft portions to the first
An auger for an ice making machine, characterized in that the base material of (1) is frictionally pressure-bonded to and joined to each end of the base material to form an auger body with the first base material.