CN217355425U

CN217355425U - Chain tensioner

Info

Publication number: CN217355425U
Application number: CN202221508296.4U
Authority: CN
Inventors: 丁平; 李继瑞
Original assignee: Dongguan Intercontinental Technology Co ltd
Current assignee: Dongguan Intercontinental Technology Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-09-02
Anticipated expiration: 2032-06-16

Abstract

The utility model discloses a chain tensioner, include: a base having a C-shaped structure, forming a mounting portion and connecting portions formed on both sides of the mounting portion to be opposed to each other; a support pin horizontally fixed between the two connection parts; the sliding block is penetrated by the supporting pin, a spring is sleeved on the supporting pin, two ends of the spring are abutted to two opposite surfaces of the connecting part and the sliding block, and the sliding block elastically moves along the axial direction of the supporting pin under the action of the spring; and the chain wheel is rotationally arranged on the top surface of the sliding block. The tensioner is integrally designed in a modularized mode, occupied positions are reduced, a chain is embedded on a chain wheel to be in transmission connection, when the tension of the chain changes, the chain is movably adjusted to the other position of a supporting pin through a sliding block under the action of a spring, the tightness degree of the chain is adjusted in a self-adaptive mode, the chain is kept on a proper tension force, especially the transmission friction force of the chain is reduced at a non-guide rail section, the loss is reduced, the service life is prolonged, the tensioner is easy to assemble, and the tensioner is high in use reliability and convenience.

Description

Chain tensioner

Technical Field

The utility model belongs to the technical field of SMT processing equipment, concretely relates to chain tensioning ware.

Background

In SMT trade processing equipment, because the upgrading of requiring to reflow soldering, equipment structure is compacter and compacter, still uses traditional guide rail, gear and chain combined structural style to realize the conveying to the conveying mode. General guide rail both ends set up the sprocket, and the chain forms the closed loop through the inboard and sprocket connection of guide rail, can produce great frictional force at the chain transmission in-process of non-guide section like this for the wearing and tearing of chain, and the length of chain needs the length of cooperation guide rail to correspond the design, chain length has the error then to appear flagging, the length of unable regulation chain, leads to connecting the danger that drops, the buckle that then appears easily in chain length short collapses, damages the chain.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a chain tensioning ware to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a chain tensioner comprising:

a base having a C-shaped structure, forming a mounting portion and connecting portions formed on both sides of the mounting portion to be opposed to each other;

a support pin horizontally fixed between the two connection parts;

the sliding block is penetrated by the supporting pin, a spring is sleeved on the supporting pin, two ends of the spring abut against two surfaces of the connecting part opposite to the sliding block, and the sliding block elastically moves along the axial direction of the supporting pin under the action of the spring;

and the chain wheel is rotatably arranged on the top surface of the sliding block.

As a further embodiment of the utility model, the supporting pin has two, and their symmetry runs through the slider, and locks through the jump ring between the supporting pin tip and the connecting portion outside.

As a further embodiment of the utility model, slider top center fixed screw, the cover is established the gasket and is pasted tightly on the slider top surface on the screw, and the sprocket center is passed through the bearing and is rotated the connection on the screw, and the interval sets up between sprocket bottom surface and the slider top surface, and the sprocket is used for with the chain gomphosis transmission.

As a further embodiment of the utility model, set up the through-hole that a plurality of and supporting pin axis are parallel and even interval set up on the installation department of base, the base is installed on equipment through the through-hole.

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

the tensioner is designed as a modularized whole, a chain transmission tensioning adjusting mode in the traditional SMT processing equipment is replaced, the modularized design structure is compact, occupied positions are reduced, the chain is embedded on the chain wheel to be in transmission connection, when the tensioning force of the chain changes, the chain is movably adjusted to the other position of the supporting pin through the sliding block under the action of the spring, the tightness degree of the chain can be adjusted in a self-adaptive mode, the chain is kept on a proper tensioning force, especially, the chain transmission friction force is reduced at a non-guide rail section, the loss is reduced, the service life is prolonged, the tensioner is easy to assemble, and the tensioner is high in use reliability and convenience.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a chain tensioner according to the present invention;

FIG. 2 is a schematic view of a chain tensioner with the sprocket removed;

fig. 3 is a schematic structural diagram of the base.

In the drawings, the components represented by the respective reference numerals are listed below:

the device comprises a base 1, a supporting pin 2, a slider 3, a chain wheel 4, an installation part 1A, a connection part 1B, a clamp spring 5, a spring 6, a fixing screw 7, a gasket 8 and a bearing 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In SMT trade processing equipment, the chain drive structure generally sets up the sprocket at the guide rail both ends, the chain forms the closed loop through the inboard chain wheel connection of guide rail, can produce great frictional force in the chain transmission process of non-guide section like this, accelerate the wearing and tearing of chain, and the length of chain needs the length of cooperation guide rail to correspond the design, chain length has the error then to appear flagging, the length of unable regulation chain, lead to connecting the danger that drops, the buckle then appears collapsing easily in chain length short-term, damage the chain.

With reference to fig. 1 and 2, in response to the disadvantage of conventional chain tension adaptability, there is devised a chain tensioner comprising: base 1, support pin 2, slider 3 and sprocket 4.

As shown in fig. 3, the base 1 is a C-shaped structure, and has a mounting portion 1A and a connecting portion 1B formed on two opposite sides of the mounting portion 1A, wherein the mounting portion 1A of the base 1 is provided with a plurality of through holes 1C parallel to the axis of the support pin 2 and arranged at uniform intervals, and the base 1 is mounted on the equipment through the through holes 1C.

Secondly, two supporting pins 2 are arranged and horizontally fixed between the two connecting parts 1B, specifically, the two supporting pins symmetrically penetrate through the slider 3, and the end parts of the supporting pins 2 and the outer sides of the connecting parts 1B are locked through clamp springs 5.

In addition, the slider 3 is penetrated by the support pin 2, the support pin 2 is sleeved with a spring 6, two ends of the spring 6 abut against two opposite surfaces of the connecting part 1B and the slider 3, the slider 3 is elastically moved along the axial direction of the support pin 2 under the action of the spring 6, the chain wheel 4 is rotatably arranged on the top surface of the slider 3, the chain wheel 4 is used for being embedded with a chain for transmission, a screw 7 is fixed at the center of the top of the slider 3, a gasket 8 is sleeved on the screw 7 and tightly attached to the top surface of the slider 3, the center of the chain wheel 4 is rotatably connected to the screw 7 through a bearing 9, and the bottom surface of the chain wheel 4 and the top surface of the slider 3 are arranged at intervals. When the chain tension changes, the chain is movably adjusted to the other position of the supporting pin 2 through the sliding block 3 under the action of the spring 6, the tightness degree of the chain is adjusted in a self-adaptive mode, the chain is kept on a proper tension force, the chain transmission friction force is reduced particularly at a non-guide rail section, the loss is reduced, and the service life is prolonged.

With this tensioning ware as modular global design, replace the chain drive tensioning adjustment mode among the traditional SMT processing equipment, modular design compact structure reduces occupation position, and the assembly of tensioning ware is simple and easy, uses reliability and convenience high.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A chain tensioner, comprising:

a support pin horizontally fixed between the two connection parts;

the sliding block is penetrated by the supporting pin, a spring is sleeved on the supporting pin, two ends of the spring are abutted to two opposite surfaces of the connecting part and the sliding block, and the sliding block elastically moves along the axial direction of the supporting pin under the action of the spring;

2. The chain tensioner as claimed in claim 1, wherein the number of the support pins is two, and the two support pins symmetrically penetrate through the slider, and the end of the support pin is locked with the outside of the connecting portion by a circlip.

3. The chain tensioner as claimed in claim 1, wherein the screw is fixed to the top center of the slider, the washer is fitted on the screw and tightly attached to the top surface of the slider, the center of the sprocket is rotatably connected to the screw through a bearing, the bottom surface of the sprocket is spaced from the top surface of the slider, and the sprocket is used for engaging with the chain for transmission.

4. The chain tensioner as claimed in claim 1, wherein the mounting portion of the base has a plurality of through holes formed therein in parallel with the axis of the support pin and spaced apart from each other at regular intervals, and the base is mounted to the equipment through the through holes.