CN-122009737-A - Crawler conveyor device of external inspection machine

CN122009737ACN 122009737 ACN122009737 ACN 122009737ACN-122009737-A

Abstract

The invention provides a caterpillar band conveyor device of an external inspection machine, which relates to the technical field of precision manufacturing and automatic conveying and comprises a frame, a driving roller, a driven roller, an annular caterpillar band, a positive pressure air chamber supporting plate unit, a negative pressure air chamber supporting plate unit and a pneumatic control system, wherein two groups of annular protruding guide rings are arranged on an annular inner ring of the annular caterpillar band, guide holes I communicated with holes I are formed in the protruding guide rings, the positive pressure air chamber supporting plate unit and the negative pressure air chamber supporting plate unit are identical in structure, guide grooves for guiding and accommodating the protruding guide rings are formed in the same structure, long-strip-shaped holes II are formed in two sides of the guide grooves, the extending direction of the long-strip-shaped holes II is identical to the rotating direction of the annular caterpillar band, and when the annular caterpillar band rotates, the corresponding guide holes I are communicated with the holes II when the corresponding guide holes I are communicated with the holes II, so that the air chamber is communicated.

Inventors

LI YUFENG
Han Shaifeng
TANG PENG

Assignees

淮安市文善电子有限公司

Dates

Publication Date: 20260512
Application Date: 20260402

Claims (10)

1. An outer inspection machine crawler conveyor apparatus, comprising: A frame; The driving roller and the driven roller are arranged on the frame; The annular crawler belt is sleeved on the driving roller and the driven roller, the annular crawler belt is a microporous breathable crawler belt, a plurality of groups of strip-shaped openings I are uniformly formed in parallel on a conveying plane perpendicular to the rotation direction and parallel to the annular crawler belt, and a plurality of groups of breathable micropores penetrating to the outer ring of the annular crawler belt are vertically formed in the openings I; The positive pressure air chamber supporting plate unit is positioned below the crawler bearing section; the negative pressure air chamber supporting plate unit is positioned below the crawler bearing section; the air pressure control system is used for respectively controlling the air pressures of the positive pressure air chamber supporting plate unit and the negative pressure air chamber supporting plate unit; the annular inner ring of the annular crawler belt is provided with two groups of annular protruding guide rings, and a guide hole I communicated with the opening I is formed in the protruding guide rings; The positive pressure air chamber supporting plate unit and the negative pressure air chamber supporting plate unit have the same structure, are respectively provided with a guide groove for guiding and accommodating the convex guide ring, and are provided with long-strip-shaped openings II at two sides of the guide grooves, and the long-strip-shaped extending direction of the openings II is the same as the rotating direction of the annular crawler belt; and two sides of the first guide hole are provided with first through holes which are configured to be communicated with the second through holes when the annular crawler rotates to enable the first guide hole to correspond to the area of the positive pressure air chamber supporting plate unit or the negative pressure air chamber supporting plate unit.
2. The crawler conveyor device of the outer inspection machine according to claim 1, wherein the positive pressure air chamber supporting plate unit is inflated through a perforated hole I which is perforated and rotated in place, punched air enters a guide hole I through the perforated hole I, then enters the perforated hole I, is sprayed out through ventilation micropores on the perforated hole I, generates floating jacking force on products falling downwards, and buffers impact of the products falling onto the annular crawler.
3. The crawler conveyor device of the external inspection machine according to claim 1, wherein the negative pressure air chamber supporting plate unit is pumped outwards through the air pressure control system, so that when the annular crawler drives the product to move to the area of the negative pressure air chamber supporting plate unit, a negative pressure adsorption positioning effect is generated.
4. The crawler conveyor device of the external inspection machine according to claim 1, further comprising two groups of linear pressing strips, wherein the two groups of linear pressing strips are arranged above the annular crawler, annular pressing notches which are in butt joint fit with the linear pressing strips are formed in two sides of the surface of the annular crawler, and the two groups of annular pressing notches are located on the outer sides of the two groups of protruding guide rings.
5. The crawler conveyor device of the external inspection machine according to claim 1, wherein the microporous breathable crawler belt is characterized in that corresponding breathable micropores with different openings are distributed in an array mode on the surface of the circumferential crawler belt.
6. The apparatus of claim 1, wherein the surface of the drive roller is provided with an annular notch for engaging the raised guide ring.
7. The crawler conveyor apparatus for an external inspection machine according to claim 1, wherein a head curtain and a tail curtain are provided above a head end and a tail end of the positive pressure air chamber supporting plate unit in a circumferential crawler conveying direction, respectively, and a gap between a bottom of the curtain and a crawler surface allows a single workpiece to pass.
8. The crawler conveyor device of the external inspection machine according to claim 1, wherein the pneumatic control system comprises a positive pressure control unit and a negative pressure control unit, the positive pressure control unit comprises an air compressor, an air storage tank, a precise pressure reducing valve, a proportional valve, a flow sensor and a pneumatic pressure sensor, and the negative pressure control unit comprises a vacuum generator, a vacuum storage tank, a vacuum regulating valve and a vacuum sensor.
9. The crawler conveyor device of the external inspection machine according to claim 8, wherein the positive pressure control unit further comprises a photoelectric sensor or a visual recognition system arranged at the outlet of the blowing nozzle, wherein the photoelectric sensor or the visual recognition system is configured to detect a falling signal of a workpiece and trigger the positive pressure air chamber supporting plate unit to work; The negative pressure control unit further comprises a workpiece detection sensor arranged in the negative pressure air chamber supporting plate unit area, the workpiece detection sensor is configured to detect whether a workpiece enters the negative pressure area and trigger negative pressure adsorption, and the negative pressure control unit is configured to dynamically adjust the adsorption force of the negative pressure air chamber supporting plate unit according to the type and the weight of the workpiece.
10. The crawler conveyor device of the outer inspection machine according to claim 8, wherein the pneumatic control system further comprises a PLC and a touch screen man-machine interface, wherein the PLC is respectively in communication connection with the positive pressure control unit and the negative pressure control unit and is configured to coordinate time sequence switching of positive pressure buffering and negative pressure absorption, and the touch screen man-machine interface is configured to set and display pneumatic parameters, working states and fault information.

Description

Crawler conveyor device of external inspection machine Technical Field The invention relates to the technical field of precision manufacturing and automatic conveying, in particular to an external inspection machine crawler conveyor device. Background In the precision manufacturing industry, products need to be subjected to appearance detection after processes such as stamping and bending. The good is typically blown out of the inspection station by a high pressure air tap and falls into a lower collection device. The prior art mainly has two schemes: 1. The direct blanking type bin is characterized in that workpieces fall at a high speed and are easy to collide with bin walls or collected workpieces, so that corners are broken and the surfaces are scratched. 2. And the basic crawler belt is conveyed, so that the workpiece directly impacts the crawler belt surface even though the high-altitude falling is avoided, and the initial impact damage risk exists. For example, patent CN216120425U discloses a blanking device using positive and negative pressure, but only simple attachment is provided between the positive and negative pressure mechanism and the conveyor belt. When the buffer is needed to be carried out by generating positive pressure, the structure is extremely easy to generate gas leakage due to the fact that the lamination is not tight, the positive pressure is insufficient, the buffer effect is greatly reduced, and the real soft landing cannot be realized. Thus, there is a strong need in the art for a solution that achieves near zero impact reception of the workpiece and that is stable and reliable in delivery. Disclosure of Invention The invention aims to overcome the technical defects of large impact damage, failure of positive pressure buffer due to poor sealing, easiness in sliding friction in the conveying process and the like in the prior art when a workpiece is received, and provides an external inspection machine crawler conveyor device which is good in sealing performance, excellent in buffering effect and stable in conveying. The invention provides the following technical scheme: An inspection machine crawler conveyor apparatus comprising: A frame; The driving roller and the driven roller are arranged on the frame; The annular crawler belt is sleeved on the driving roller and the driven roller, the annular crawler belt is a microporous breathable crawler belt, a plurality of groups of strip-shaped openings I are uniformly formed in parallel on a conveying plane perpendicular to the rotation direction and parallel to the annular crawler belt, and a plurality of groups of breathable micropores penetrating to the outer ring of the annular crawler belt are vertically formed in the openings I; The positive pressure air chamber supporting plate unit is positioned below the crawler bearing section; the negative pressure air chamber supporting plate unit is positioned below the crawler bearing section; the air pressure control system is used for respectively controlling the air pressures of the positive pressure air chamber supporting plate unit and the negative pressure air chamber supporting plate unit; the annular inner ring of the annular crawler belt is provided with two groups of annular protruding guide rings, and a guide hole I communicated with the opening I is formed in the protruding guide rings; The positive pressure air chamber supporting plate unit and the negative pressure air chamber supporting plate unit have the same structure, are respectively provided with a guide groove for guiding and accommodating the convex guide ring, and are provided with long-strip-shaped openings II at two sides of the guide grooves, and the long-strip-shaped extending direction of the openings II is the same as the rotating direction of the annular crawler belt; and two sides of the first guide hole are provided with first through holes which are configured to be communicated with the second through holes when the annular crawler rotates to enable the first guide hole to correspond to the area of the positive pressure air chamber supporting plate unit or the negative pressure air chamber supporting plate unit. The core structure frame of the crawler conveyor of the external inspection machine is constructed, and the work piece is fundamentally transformed from hard collision to air cushion buffering through the matching of the microporous ventilation type crawler and the positive and negative pressure air chamber supporting plate units. The precise matching of the convex guide ring and the guide groove ensures the high tightness of the gas path, the multi-layer gas path design of the first hole, the first guide hole, the first perforation and the second hole realizes the precise guiding and uniform distribution of gas, the structure fundamentally solves the problem of impact damage of precise workpieces in the receiving and conveying processes, and the technical foundation is laid for the refinement a