CN213495988U

CN213495988U - Thin and high tooth type welding inner tooth pipe die

Info

Publication number: CN213495988U
Application number: CN202021850473.8U
Authority: CN
Inventors: 胡省宪; 徐勇; 沈凌峰; 沈春锋
Original assignee: Shanghai Kunyong Energy Saving Technology Co ltd
Current assignee: Shanghai Kunyong Energy Saving Technology Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-06-22
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a pinion mold utensil in welding of thin high tooth type relates to the technical field of air conditioner accessory, including the mould body, the teeth of a cogwheel both sides are respectively for cutting into the side and surely cutting out the side, and the teeth of a cogwheel deviates from mould body axle center one side and cuts into and use cambered surface transitional coupling as cutting into fillet between the side, and the teeth of a cogwheel deviates from mould body axle center one side and surely cuts out and use cambered surface transitional coupling for cutting out fillet between the side, cuts into fillet radius and is greater than and surely cuts out fillet radius. The use of a large fillet with a large radius of the cut-in fillet ensures that as much metal as possible is bitten into the tooth slot, followed by the use of a small fillet with a small radius of the cut-out fillet ensures sharpness, closing the tooth slot of the die body as quickly as possible, and squeezing the bitten metal to fill the tooth slot as much metal as possible. The problem of increase tubular product tooth density and with the teeth of a cogwheel attenuate of mould body one by one is solved, ensure mould body intensity and avoid collapsing the tooth phenomenon and take place, effectively ensure the tooth intensity of the tubular product of making simultaneously.

Description

Thin and high tooth type welding inner tooth pipe die

Technical Field

The utility model relates to a technical field of air conditioner accessory, more specifically say, it relates to a welding internal tooth pipe die utensil of thin high tooth type.

Background

As shown in fig. 1, in the existing air conditioning industry, the mountain-shaped tooth mold has the advantages of high tooth-shaped strength, small molding pressure and small plastic flow amount of copper or steel, so that the mountain-shaped tooth mold is commonly used.

Along with the restriction of mould material improvement, processing equipment improvement, new technology's application and throughput reduces, begin to consider towards the direction that improves heat exchange efficiency, current solution improves heat exchange efficiency's scheme has: the tooth density of the pipe and the tooth height are increased. With the increase of the tooth density of the pipe, the tooth number of the single circumference is increased, the same depth can only reduce the tooth crest angle of the pipe, so the tooth form becomes thin, and the height is increased to form thin and high teeth.

However, increasing the tooth density of the tubing at once reduces the width of the tooth bottom and reduces the amount of tubing wall locking liquid, which in turn reduces efficiency. In addition, considering the tooth strength of the die, increasing the tooth density of the pipe can cause the tooth thinning of the die, which easily causes the occurrence of the tooth breaking phenomenon of the die, and needs to be improved urgently.

SUMMERY OF THE UTILITY MODEL

To this problem in the practical application, the utility model aims to provide a welding internal tooth pipe die of thin high tooth type, concrete scheme is as follows:

the utility model provides a welding internal tooth pipe mould of thin high tooth type, is including the mould body that is the roller form, the mould body evenly is formed with a plurality of teeth of a cogwheel along self circumference on the lateral wall, and is adjacent be formed with the tooth's socket between the teeth of a cogwheel, the teeth of a cogwheel is close to the relative both sides of tooth's socket are for cutting into the side and surely cutting out the side respectively, the teeth of a cogwheel deviate from mould body axle center one side with cut into and use cambered surface transitional coupling to cut into fillet between the side, the teeth of a cogwheel deviate from mould body axle center one side with cut out and use cambered surface transitional coupling to cut out fillet between the side, just the radius that cuts into fillet is greater than cut.

Further preferably, the die body can be used for machining hard metals.

Further preferably, the addendum angle of the die body is 20 to 60 degrees.

Compared with the prior art, the beneficial effects of the utility model are as follows:

by making the radius of the cut-in fillet portion of the die body larger than that of the cut-out fillet portion, it is ensured that as many metal portions as possible can be bitten into the tooth grooves by the large fillet provided with the large radius of the cut-in fillet portion, and then the sharpness is ensured by the small fillet provided with the small radius of the cut-out fillet portion, the tooth grooves of the die body are closed as quickly as possible, and the biting metal is squeezed to fill the tooth grooves as much as possible. The problem of increase tubular product tooth density and with the teeth of a cogwheel attenuate of mould body one by one is solved, ensure mould body intensity and avoid collapsing the tooth phenomenon and take place, effectively ensure the tooth intensity of the tubular product of making simultaneously.

Drawings

FIG. 1 is a schematic diagram of background art;

fig. 2 is an overall schematic view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic view of the present invention;

fig. 5 is a schematic view of a finished pipe.

Reference numerals: 1. a mold body; 2. gear teeth; 3. a tooth socket; 4. cutting into the side; 5. cutting out a side; 6. cutting into a fillet part; 7. cutting out a fillet part; 8. a light stick; 9. a metal strip.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

Referring to fig. 2 and 3, a thin and high tooth type welding inner gear pipe die comprises a die body 1 in a shape of a round roller, wherein a plurality of gear teeth 2 are uniformly formed on the outer side wall of the die body 1 along the circumferential direction of the die body, a gear tooth groove 3 is formed between every two adjacent gear teeth 2, two opposite sides of each gear tooth 2 close to the gear tooth groove 3 are a cut-in side 4 and a cut-out side 5 respectively, one side of each gear tooth 2 departing from the axis of the die body 1 and the cut-in side 4 are connected into a cut-in fillet part 6 through an arc surface transition, one side of each gear tooth 2 departing from the axis of the die body 1 and the cut-out side 5 are connected into a cut-out fillet part 7 through an arc surface transition, and the radius.

As shown in fig. 4, the mold body 1 is placed on the metal belt 9, the smooth rod 8 is placed on the side of the metal belt 9 away from the mold body 1, the mold body 1 rolls in the same direction as the smooth rod 8 to roll the metal belt 9, and after the rolling, the metal belt 9 is made into a pipe material to obtain the thin and high tooth-shaped welded inner tooth pipe. The rolling process for making the tube is common knowledge in the art and will not be described in detail. The die body 1 of this embodiment can be used for processing a soft metal such as copper or aluminum to form a tube, and when a hard metal such as stainless steel or titanium is required to be processed, the above-described method of rolling to form a tube can be adopted, and the metal belt 9 in this embodiment is a steel belt. The hard metal material is hard, the material ductility is high, and the plastic fluidity is low. Preferably, the tooth crest angle of the die body 1 of the present embodiment is selected to be 20 to 60 degrees, the tooth crest angle of the die body 1 is determined according to the yield strength of the fluidity of the selected metal material, and generally, the worse the fluidity, the higher the strength, and the larger the tooth crest angle. As shown in fig. 5, after the rolling process is completed, the two ends of the metal strip are welded into a circular tube shape, so as to obtain a finished pipe.

Specifically, in the pipe manufacturing process, the die body 1 rotates the cut-in fillet 6 to contact the metal strip 9 first, and then the cut-out fillet 7 contacts the metal strip 9. The use of a large fillet with a large radius of the cut-in fillet 6 ensures that as much metal as possible is bitten into the tooth space 3, followed by a small fillet with a small radius of the cut-out fillet 7 ensures sharpness, closing the tooth space 3 of the die body 1 as quickly as possible, and squeezing the bitten metal to fill the tooth space 3 as much as possible (described with one tooth space 3 between two adjacent teeth 2, the cut-in fillet 6 and the cut-out fillet 7 being described on two adjacent teeth 2, respectively).

The radius of the cut-in fillet part 6 of the die body 1 is larger than that of the cut-out fillet part 7, so that the problem that the gear teeth 2 of the die body 1 are thinned due to the fact that the gear tooth density of the pipe is increased is solved, the strength of the die body 1 is ensured, the occurrence of the tooth breakage phenomenon is avoided, and the tooth strength of the manufactured pipe is effectively ensured.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A thin and high tooth type welding inner tooth pipe die comprises a die body (1) in a shape of a round roller, the die body (1) is uniformly provided with a plurality of gear teeth (2) on the outer side wall along the circumferential direction, tooth grooves (3) are formed between the adjacent gear teeth (2), characterized in that the two opposite sides of the gear tooth (2) close to the tooth groove (3) are respectively a cut-in side (4) and a cut-out side (5), one side of the gear teeth (2) departing from the axis of the die body (1) and the cut-in side (4) are connected with each other in a transition way by a cambered surface to form a cut-in fillet part (6), one side of the gear teeth (2) departing from the axis of the die body (1) is connected with the cutting side (5) in a transition way by a cambered surface to form a cutting fillet part (7), and the radius of the cut-in fillet part (6) is larger than that of the cut-out fillet part (7).

2. Lean-high-tooth-type welded internal gear tube mold according to claim 1, wherein the mold body (1) can be used for machining hard metals.

3. The thin and high tooth type welded internal gear tube mold according to claim 1, wherein the addendum angle of the mold body (1) is 20 to 60 degrees.