阅读说明：本技术 一种双侧弯结构传输链及其加工方法 (Double-side bent structure transmission chain and processing method thereof ) 是由 马美琴 曹永楼 戴兴仁 汪秋萍 于 2020-04-29 设计创作，主要内容包括：本发明涉及传输链技术领域,提供一种双侧弯结构传输链及其加工方法,旨在解决传统的双侧弯链条采用常规的架构,侧弯能力和耐磨损效果欠佳,使用性能无法满足产品长期输送需要的问题,包括一组串接链节,每个所述链节均包括两个外链板、内链节和两个销轴,两个销轴分别转动插设在内链节的两端,且两个外链板的一端转动套设在其中一个销轴的两端；所述外链板包括水平的外链板体,且外链板体的两端同向弯折有折弯凹部,折弯凹部的中部开设有销轴孔,外链板体的外侧边缘一体成型有沿着外链板体轮廓延伸的倒角Ⅱ。本发明尤其适用于产品包装输送生产线的使用,具有较高的社会使用价值和应用前景。(The invention relates to the technical field of transmission chains, and provides a transmission chain with a double-side bending structure and a processing method thereof, aiming at solving the problems that the traditional double-side bending chain adopts a conventional framework, has poor side bending capability and wear-resistant effect, and cannot meet the long-term conveying requirement of products in use performance; the outer chain plate comprises a horizontal outer chain plate body, bending concave parts are bent at two ends of the outer chain plate body in the same direction, pin shaft holes are formed in the middle of the bending concave parts, and chamfers II extending along the outline of the outer chain plate body are integrally formed on the outer edge of the outer chain plate body. The invention is particularly suitable for the product packaging and conveying production line, and has higher social use value and application prospect.)

1. A transmission chain with a double-side bending structure is characterized by comprising a group of chain links connected in series, wherein each chain link comprises two outer chain plates, an inner chain link and two pin shafts, the two pin shafts are respectively and rotatably inserted at two ends of the inner chain link, and one end of each of the two outer chain plates is rotatably sleeved at two ends of one of the pin shafts;

the outer chain plate comprises a horizontal outer chain plate body, two ends of the outer chain plate body are bent in the same direction to form bending concave parts, the middle of each bending concave part is provided with a pin shaft hole, the outer edge of the outer chain plate body is integrally formed with a chamfer II extending along the outline of the outer chain plate body, and the angle of the chamfer II is 45 degrees;

the inner chain link comprises a strip-shaped inner chain link body, pitch holes are symmetrically formed in the side walls of two ends of the inner chain link body, and chamfers I are symmetrically formed in the edges of the upper side and the lower side of the inner chain link body;

the round pin axle includes the axis body, and the both sides of axis body are inwards sunken to be formed with the rotation portion of circular step form, and the both ends symmetry of axis body is equipped with the axle head location portion that is used for the chain link equipment.

2. The double-sided bent structure transmission chain as claimed in claim 1, wherein: and the wear-resistant surface is formed on the annular side wall of the middle part of the outer side of the outer chain plate body, the chamfer I and the middle part of the shaft body by the combination of soaking treatment and high-frequency treatment.

3. The double-sided bent structure transmission chain as claimed in claim 1, wherein: and two ends of the inner chain link are of smooth arc structures.

4. The double-sided bent structure transmission chain as claimed in claim 1, wherein: the pitch holes are of a horizontally arranged long waist-shaped structure.

5. The double-sided bent structure transmission chain as claimed in claim 1, wherein: the length of the exposed head of the rotating part after assembly is not more than the distance of the outer edge of the bending concave part, and the rotating part is in interference fit with the pin shaft hole.

6. The double-sided bent structure transmission chain as claimed in claim 1, wherein: the outer chain plate and the inner chain link are both made of medium carbon alloy structural steel 40Cr, and the pin shaft is made of medium carbon alloy steel 42 CrMo.

7. A processing method of a transmission chain with a double-side bending structure is characterized in that: comprises the following steps of (a) carrying out,

s1, processing of an outer chain plate:

bending two ends of the outer chain plate into bending concave parts which are warped outwards, and punching the bending concave parts to process pin shaft holes;

s2, processing inner links:

punching two ends of the inner chain link into circular arcs, punching an outward-protruding chamfer I on the upper side wall and the lower side wall, and punching holes on the side walls of the two ends of the inner chain link to process pitch holes;

s3, processing the pin shaft 3:

cutting circular step-shaped rotating parts at two sides of the pin shaft, and grinding an arc-shaped shaft end groove at the end head of the rotating part;

s4, wear-resisting treatment:

forming the annular side walls of the middle part of the outer side of the outer chain plate body, the chamfer I and the middle part of the shaft body into a wear-resistant surface through heat treatment and high-frequency treatment;

s5, assembling the chain links:

and inserting the pin shaft into the pitch hole of the inner chain link, assembling the outer chain plates at two ends of the pin shaft, sequentially vertically putting the assembled pin shaft into a punching machine for pin smashing processing, expanding two shaft end grooves outwards to form a shaft end positioning part, and completing assembly by circular operation.

8. The method for processing a double-sided bent structure conveyor chain according to claim 7, wherein: in the step S1, in the above step,

before bending the bending concave parts at the two ends of the outer chain plate, chamfering processing is carried out on the edge of the outer chain plate.

Technical Field

The invention relates to the technical field of transmission chains, in particular to a transmission chain with a double-side bending structure and a processing method thereof.

Background

The chain is a mechanical product with strong universality, and has the characteristics of gears and belts, so the chain is widely applied to transmission, conveying and some special occasions.

The double-side bending chain is generally used on a product packaging and conveying production line, belongs to a double-disturbance turning conveying chain, can be used in any direction, has the characteristic of expansion capability in two directions, has the bending radius of about 20 degrees, can realize large-angle turning, shortens the arrangement of the production line, and meets the requirement of compact inter-vehicle production layout.

When the bilateral curved chain runs, the upper and lower side surfaces of the inner chain plate and the outer chain plate are in sliding contact with the guide rail; during lateral bending operation, the outer side face of the outer chain plate is in contact with the auxiliary device, stable operation during lateral bending is guaranteed, the traditional bilateral bending chain adopts a conventional framework, lateral bending capacity and abrasion-resistant effect are poor, and service performance cannot meet the requirement of long-term conveying of products.

The patent with publication number CN201276334 discloses a high-strength and wear-resistant double-side-bent conveying chain, which comprises inner chain plates, outer chain plates and pin shafts for connecting the inner chain plates and the outer chain plates, wherein the connecting pin shafts fixed by the pins are arranged between the outer chain plates, the outer chain plates are arranged to be protruded at the middle parts, and the outer side surfaces of the outer chain plates are provided with high-frequency quenching layers.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a transmission chain with a double-side bending structure and a processing method thereof, overcomes the defects of the prior art, has reasonable design and compact structure, and aims to solve the problems that the traditional double-side bending chain adopts a conventional framework, has poor side bending capability and wear-resistant effect, and cannot meet the long-term conveying requirement of products in use performance.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

a transmission chain with a double-side bending structure comprises a group of chain links connected in series, wherein each chain link comprises two outer chain plates, an inner chain link and two pin shafts, the two pin shafts are respectively and rotatably inserted at two ends of the inner chain link, and one ends of the two outer chain plates are rotatably sleeved at two ends of one pin shaft;

the outer chain plate comprises a horizontal outer chain plate body, two ends of the outer chain plate body are bent in the same direction to form bending concave parts, the middle of each bending concave part is provided with a pin shaft hole, the outer edge of the outer chain plate body is integrally formed with a chamfer II extending along the outline of the outer chain plate body, and the angle of the chamfer II is 45 degrees;

the inner chain link comprises a strip-shaped inner chain link body, pitch holes are symmetrically formed in the side walls of two ends of the inner chain link body, and chamfers I are symmetrically formed in the edges of the upper side and the lower side of the inner chain link body;

the round pin axle includes the axis body, and the both sides of axis body are inwards sunken to be formed with the rotation portion of circular step form, and the both ends symmetry of axis body is equipped with the axle head location portion that is used for the chain link equipment.

Preferably, soaking treatment matched with high-frequency treatment is carried out on the annular side wall in the middle of the outer side of the outer chain plate body, the chamfer I and the shaft body.

Preferably, both ends of the inner chain link are of smooth circular arc structures.

Preferably, the pitch holes are horizontally arranged long waist-shaped structures.

Preferably, the length of the exposed head of the rotating part after assembly does not exceed the distance of the outer edge of the bending concave part, and the rotating part is in interference fit with the pin shaft hole.

Preferably, the outer chain plate is made of medium carbon alloy structural steel 40Cr, and the pin shaft is made of medium carbon alloy steel 42 CrMo.

The invention also provides a processing method of the transmission chain with the double-side bending structure, which comprises the following steps,

s1, processing of an outer chain plate:

bending two ends of the outer chain plate into bending concave parts which are warped outwards, and punching the bending concave parts to process pin shaft holes;

s2, processing inner links:

punching two ends of the inner chain link into circular arcs, punching an outward-protruding chamfer I on the upper side wall and the lower side wall, and punching holes on the side walls of the two ends of the inner chain link to process pitch holes;

s3, processing the pin shaft 3:

cutting circular step-shaped rotating parts at two sides of the pin shaft, and grinding an arc-shaped shaft end groove at the end head of the rotating part;

s4, wear-resisting treatment:

forming the annular side walls of the middle part of the outer side of the outer chain plate body, the chamfer I and the middle part of the shaft body into a wear-resistant surface through heat treatment and high-frequency treatment;

s5, assembling the chain links:

and inserting the pin shaft into the pitch hole of the inner chain link, assembling the outer chain plates at two ends of the pin shaft, sequentially vertically putting the assembled pin shaft into a punching machine for pin smashing processing, expanding two shaft end grooves outwards to form a shaft end positioning part, and completing assembly by circular operation.

Preferably, in step S1, before the bending recesses at the both ends of the outer link plate are bent, the edges of the outer link plate are chamfered.

(III) advantageous effects

The embodiment of the invention provides a transmission chain with a double-side bent structure and a processing method thereof, and the transmission chain has the following beneficial effects:

1. through the integrated configuration of outer link joint, inner link and round pin axle, effectual two side bending structure of having constituteed ensures that the transmission chain operates steadily when the side bending, can reach the side bending effect when satisfying the chain use, has improved the side bending ability and the stand wear and tear effect of two side bending structure conveying chains to the performance of product transmission chain has been satisfied.

2. The bending concave parts which are bent in the same direction at the two ends of the outer chain plate body are arranged, the lateral bending space between the inner chain plate and the outer chain plate is enlarged, the lateral bending capacity is increased, the protruding space after the pin shaft is assembled is ensured by matching with the arrangement of the pin shaft holes, when the chain is in lateral bending operation, the interference between the lateral auxiliary device and the end face of the pin shaft is avoided, and the lateral bending stability is ensured.

3. The wear-resistant surface is formed by carrying out heat treatment on the easily-worn parts of the outer chain plate, the inner chain link and the pin shaft and matching high-frequency treatment, so that the surface hardness of parts is effectively improved, the chain is not easily worn in long-term use, and the service life of the chain is prolonged.

Drawings

The above features, technical features, advantages and implementations of a double-side bent structure transmission chain and a method for manufacturing the same will be further described in the following preferred embodiments in a clearly understandable manner with reference to the accompanying drawings.

FIG. 1 is a structural front view of a double-side bent structure conveyor chain according to the present invention;

FIG. 2 is a top view of a transmission chain with a double-side bent structure according to the present invention;

FIG. 3 is a schematic view of a combination structure of an outer link plate and a pin shaft in a transmission chain with a double-side bending structure according to the present invention;

FIG. 4 is a schematic structural diagram of an outer link plate in a transmission chain with a double-side bending structure according to the present invention;

FIG. 5 is a side view of the structure of an outer link plate in a double-sided bent structure transmission chain according to the present invention;

FIG. 6 is a schematic structural view of an inner link in a transmission chain of a double-side bent structure according to the present invention;

FIG. 7 is a top view of an inner link in a transmission chain with a double-side bent structure according to the present invention

Fig. 8 is a schematic structural view of a pin shaft in a transmission chain with a double-side bent structure according to the present invention.

In the figure: the chain comprises an outer chain plate 1, an outer chain plate body 101, a bending concave part 102, a chamfer II 103, a pin shaft hole 104, an inner chain link 2, an inner chain link body 201, a pitch hole 202, a chamfer I203, a pin shaft 3, a shaft body 301, a rotating part 302 and a shaft end positioning part 303.

Detailed Description

The invention will be further illustrated with reference to the following figures 1 to 8 and examples: