KR102000955B1 - X-Ray Apparatus for Inspecting a Plural of Objects Simultaneously and Method for the Same - Google Patents

Abstract

The present invention relates to an X-ray inspection apparatus and method for simultaneous inspection of a plurality of parts, and more particularly, to an X-ray inspection apparatus and method for enabling simultaneous inspection of a plurality of parts by at least two X-ray tubes and detectors will be. The x-ray inspection method includes: a step of waiting at least two inspection parts; The at least two inspection parts being transferred to an inspection stage; A step of inspecting a predetermined portion of the at least two inspection parts by one x-ray tube; The at least two inspected parts being inspected by another x-ray tube while the at least two inspected parts are being transferred; And a step of waiting at least two inspection parts for which inspection has been completed, wherein at least two inspection parts different from each other in the inspection process are in a standby state.

Description

Technical Field [0001] The present invention relates to an X-ray inspection apparatus and a method for simultaneous inspection of multiple parts,

The present invention relates to an X-ray inspection apparatus and method for simultaneous inspection of a plurality of parts, and more particularly, to an X-ray inspection apparatus and method for enabling simultaneous inspection of a plurality of parts by at least two X-ray tubes and detectors will be.

An x-ray inspection apparatus corresponds to a non-destructive inspection apparatus using a transmitted image obtained from an x-ray generated by a cathode ray colliding with a metal substrate or a cathode ray caused by a change in speed at an anode or a vicinity of a target. X-ray inspection devices can be used to detect defects in products or parts, such as product defects, foreign matter detection inside the product, or defective soldering.

The prior art related to the x-ray inspection apparatus is Patent Registration No. 1272556 'automatic battery continuous inspection apparatus'. The prior art relates to a battery inspection apparatus capable of rapidly and precisely inspecting a large amount of batteries continuously supplied with the supply, inspection and discharge of the battery being organically connected. The prior art includes a feed conveyor; A supply elevating and lowering rotary part comprising a lifting and rotating part having a plurality of grasping devices in a disk shape; An inspection rotary part having a rotating circular plate formed with a plurality of battery mount parts to receive the battery from the supply rotary part; At least one detector and x-ray tube configured to correspond to the upper and lower portions of the inspection and rotation unit; A discharge elevating and lowering rotary part having a plurality of holding devices in the shape of a disk and having a lifting and lowering part for lifting and lowering the lifting and lowering device; And a discharging conveyor configured to receive a discharged battery from the discharging / discharging / rotating portion, wherein the supplying rotating portion, the inspecting rotating portion and the discharging / elevating rotating portion are connected to rotate simultaneously by one driving means. do.

Another prior art related to x-ray inspection apparatus is Patent Registration No. 1133048, 'Battery Inspection Apparatus'. The prior art includes a chamber having a partition wall and an outer wall for blocking rays emitted during a battery inspection process; A loading portion and an unloading portion for transferring the battery; And a conveying portion, and the conveying portion includes a conveying path portion and a conveying jig.

The X-ray shielding and reliability should be considered in the inspection apparatus or inspection method by X-ray, and the speed of inspection should be considered as a main factor to be considered. In the disclosed prior art, the inspection of each part or product is carried out sequentially one by one. However, depending on the product or part, it may be necessary to simultaneously inspect multiple parts. The prior art does not disclose such techniques.

The present invention has been made to solve the problems of the prior art and has the following purpose.

It is an object of the present invention to provide an x-ray inspection apparatus which enables simultaneous inspection of a plurality of parts.

It is an object of the present invention to provide an X-ray inspection method which enables simultaneous inspection of a plurality of components by a plurality of X-ray tubes.

According to a preferred embodiment of the present invention, an x-ray inspection method for simultaneous inspection of a plurality of parts comprises: at least two inspection parts waiting; The at least two inspection parts being transferred to an inspection stage; A step of inspecting a predetermined portion of the at least two inspection parts by one x-ray tube; The at least two inspected parts being inspected by another x-ray tube while the at least two inspected parts are being transferred; And a step of waiting at least two inspection parts for which inspection has been completed, wherein at least two inspection parts different from each other in the inspection process are in a standby state.

According to another preferred embodiment of the present invention, the waiting step proceeds in the shielding structure and the inspection process proceeds after the shielding of the other two parts located at the standby stage is completed.

According to another preferred embodiment of the present invention, an X-ray inspection apparatus for simultaneous inspection of a plurality of components includes an input module in which a plurality of components are input; A waiting module for waiting at least two components selected from the input module; At least two x-ray tubes simultaneously inspecting said at least two parts transferred from said atmospheric module; At least two detectors for detecting x-rays projected from each of at least two x-ray tubes; And a discharge waiting module to which at least two components inspected have been transferred, said at least two x-ray tubes sequentially inspecting different parts of said at least two parts in sequence.

According to another preferred embodiment of the present invention, the standby module and the discharge standby module have a shielding tunnel.

The inspection apparatus according to the present invention has an advantage that inspection efficiency can be improved by allowing a plurality of parts to be simultaneously inspected. In addition, the inspection method according to the present invention has an advantage that the safety of inspection can be ensured by allowing a series of operations such as input, air, shielding, inspection, and discharge to be performed with relevance.

1 shows an embodiment of the inspection method according to the present invention.
2A and 2B are a plan view and a front view, respectively, of an embodiment of the inspection apparatus according to the present invention.
FIG. 3 is a flowchart showing an embodiment of a process of the inspection method according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

1 shows an embodiment of the inspection method according to the present invention.

Referring to FIG. 1, an inspection method according to the present invention includes: a step of waiting at least two inspection parts; The at least two inspection parts being transferred to an inspection stage; A step of inspecting a predetermined portion of the at least two inspection parts by one x-ray tube; The at least two inspected parts being inspected by another x-ray tube while the at least two inspected parts are being transferred; And a step of waiting at least two inspection parts which have been inspected, wherein at least two other inspection parts are in a standby state in the inspection process.

The inspection method or inspection apparatus according to the present invention can be applied to any product or part for which defect detection by nondestructive inspection is required and can be applied to inspection of products such as automobile batteries, for example. The inspection includes an X-ray tube for generating X-rays and a detector for detecting X-rays transmitted through the object to be inspected. In the inspection process, the inspection stage may be shielded by a material such as lead or steel, for example. The X-rays detected by the detector are subjected to image processing and displayed by an appropriate display unit so that the presence or absence of defects can be checked.

The known modules, units or parts used in the X-ray inspection method and apparatus are not specifically described herein. This is for a clear understanding of the present invention and should not be understood as excluding such known elements from the present invention. Also, various apparatuses for increasing the inspection efficiency can be added to the apparatus or method according to the present invention. However, the present invention is not limited by the addition or addition of such components.

A plurality of parts requiring inspection by the input module 12 can be supplied. The input module 12 may be part of the inspection apparatus or may be a separate and independent module and the supply of the object to be inspected may be done by any method known in the art.

The subject to be inspected supplied to the input module 12 may be classified into a group to be inspected, the group to be inspected may include, for example, two to five parts, and the inspection may be performed on a group basis. The components of the supply module 12 can be classified into a group to be inspected and put into the standby module 13. [ The first door D1 may be installed between the input module 12 and the standby module 13 and two parts may be transferred to the standby module 13 if two, have. And the first door D1 can be closed.

The standby module 13 may be formed in a tunnel structure which is shielded by a shielding curtain made of, for example, lead. The standby module 13 may be shielded from the outside or the inspection module 14 by the first door D1, the shielding tunnel and the second door D2. The first door D1, the shielding tunnel, and the second door D2 may be made of a material or structure suitable for shielding the X-ray, and are not limited by the material or structure specific to the present invention.

The inspected group in the waiting state in the standby module 13 can be transferred to the inspection module 14 while the second door D2 is opened and at the same time or after the inspected group is transferred, D1 may be opened and another inspected group may be transferred to the standby module 13. [

The inspection module 14 may include at least two x-ray tubes 141 and a detector 142 corresponding to each x-ray tube 141. At least two x-ray tubes 141 may be installed below or above the inspection stage and may be arranged in a series of orders. On the other hand, the detector 142 may be arranged at any position that can detect the X-rays projected from the at least two X-ray tubes 141 and transmitted through the inspected group. For example, the detector 142 may have a number corresponding to the number of the X-ray tubes 141 and may be installed above the inspection stage.

In the inspection module 14, the inspected group may first be inspected by the first x-ray tube 141. For example, the lower portion of each component belonging to the inspected group can be inspected by the first x-ray tube 141. Thereafter, the inspected group can be moved to the inspection position of the second x-ray tube 141. And the inspected group can be inspected by the second x-ray tube 14. [ For example, the upper portion of each component belonging to the inspected group can be inspected simultaneously by the second x-ray tube 141. As described above, each of the plurality of X-ray tubes 141 can simultaneously inspect predetermined portions of the parts belonging to the inspected group. Specifically, the first position of all the components belonging to the inspected group is inspected by the first X-ray tube 141, the inspected group is moved, and the second component The second position can be inspected. Then, the inspected group is moved again, and the third position of all the components belonging to the inspected group can be inspected by the third x-ray tube 141. As described above, the portions to be inspected can be inspected at the same time by the portions determined by the respective X-ray tubes 141.

The X-ray projected by the X-ray tube 141 can be detected by the detector 142, processed by the image processing, and transmitted to the image module 16. The video module 16 may be installed in a separate and independent space. The imaging module 16 may include a display unit and may be inspected for the components of the inspected group based on the displayed image.

The inspected group to be inspected can be transferred to the discharge standby module 15 by opening the third door D3. At the same time, when the inspected group is transferred to the discharge waiting module 15, another inspection subject group of the waiting module 13 can be transferred to the inspection module 14 together with the opening of the second door D2. The third door D3 of the discharge standby module 15 and the second door D2 of the inspection module 14 can be operated independently but preferably simultaneously opened and closed at the same time. On the other hand, another inspected group 12 located in the input module 12 can be supplied to the standby module 13 while the first door D1 is opened. As described above, each of the groups to be inspected located in the input module 12, the standby module 13, the inspection module 14, and the discharge standby module 15 according to the present invention can be transferred while being correlated with each other. At the same time, each of the doors D1, D2, D3, and D4 can also operate in association with each other. This can reduce the time required for movement or transfer of the test group and improve the inspection efficiency.

The inspected group transferred to the discharge waiting module 15 may be discharged under the control of the control module 11 by opening the fourth door D4 at any appropriate time. For example, the fourth door D4 may be opened together with the first door D1 and may be closed together during the inspection process of the inspection module 14.

The control module 11 can control the operation of the entire inspection apparatus. For example, the control module 11 can control the opening and closing of each of the doors D1, D2, D3 and D4, the transfer of a group to be inspected, the operation of the x-ray tube 141 and the operation of the detector 142. In addition, the image module 16 may control the transmission of images while storing the inspection results of the image module 16. The control module 11 may, for example, include a central processing unit and may include various input means for control.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a testing apparatus in which an inspection structure according to the present invention is practiced will be described.

2A and 2B are a plan view and a front view, respectively, of an embodiment of the inspection apparatus according to the present invention.

Referring to FIGS. 2A and 2B, an inspection apparatus 20 according to the present invention includes an input module 21 into which a plurality of components are input; A waiting module (22) for waiting at least two components selected from the input module (21); At least two x-ray tubes (231a, 231b) simultaneously inspecting said at least two parts transferred from the standby module (22); At least two detectors (232a, 232b) for detecting x-rays projected from each of at least two x-ray tubes (231a, 231b); And at least two x-ray tubes (231a, 231b) sequentially examine different parts of the at least two parts at the same time.

The insertion module 21 may have a suitable structure capable of accommodating a plurality of parts to be inspected and may have a suitable structure for allowing a component such as an automobile battery to be transferred to the guide unit 211, for example. The parts can be accommodated in the inspection tray and sequentially transferred along the guide path along the guide unit 211. The input module 21 may include a conveying conveyor C1 for conveying and a driving means 212 such as a motor for driving the conveying conveyor C2.

The first door D1 may be provided in front of the closing module 21 and the opening and closing of the first door D may be controlled by the operating link L1. When the first door (D1) of the loading module (21) is opened, a group to be inspected including at least two parts (B) described above can be transferred to the standby module (22).

The waiting module 22 may include a shielding tunnel 221 for guiding the conveyance of the inspected group while shielding the X-ray, and a second door D2 formed at the entrance of the inspection module 23. The conveyance of the component B through the shielding tunnel 221 can be carried out by the conveying conveyor C2 which is operated by the driving means. The shielding tunnel 221 may have any structure capable of shielding the X-ray and both ends may be connected to the doors D1 and D2.

The inspection module 23 includes at least two X-ray tubes 231a and 231b arranged side by side or in a sequential order, and an X-ray tube 322 projecting from each of the X-ray tubes 231a and 231b, And a test stage 234 for moving the detectors 232a and 232b and each component B to a predetermined inspection position while setting inspection positions.

When at least two parts B are placed on the inspection stage 234, the inspection stage 234 can be moved to the inspection position by a drive device 234a, for example a motor. The first x-ray tube 231a can conduct x-ray inspection on at least two components (B). Then, the inspection stage 234 is moved to the inspection position of the second x-ray tube 231b, and inspection for other parts of the component can proceed. The lower portion of each component B can be inspected by the first x-ray tube 231a and the upper portion of each component B can be inspected by the second x-ray tube 231b, for example. The X-rays projected from the respective X-ray tubes 231a and 231b and transmitted through the respective parts B can be sensed by different detectors 232a and 232b, respectively. Thus, according to the present invention, at least two components can be inspected for the first inspection portion by the first x-ray tube 231a and for the second inspection portion by the second x-ray tube 231b. The X-rays projected from the respective X-ray tubes 231a and 231b may be sensed by the different detectors 232a and 232b and then subjected to image processing and then transmitted to the image module to be inspected.

The component B whose inspection has been completed can be transferred to the discharge standby module 24. [

The third door D3 can be opened and the second door D2 can be opened at the same time in order to be transferred to the discharge waiting module 24. [ And at the same time the part B of the inspection module 23 is conveyed by the appropriate conveying means such as the conveying conveyor C3 to the discharge standby module 23 24). ≪ / RTI > Thereafter, the second door D2 and the third door D3 are closed again. The first door D1 and the fourth door D4 may be opened when the second door D2 and the third door D3 are closed.

The discharge waiting module 24 may include a shielding tunnel 241 capable of guiding the conveyance of the part while the X-ray is shielded, a conveying conveyor C4 and a fourth door D4 formed in front of the discharge module 25 have. The conveyance of the part B through the conveying conveyor C4 can be performed according to a method known in the art, and the present invention is not limited thereto. The first door D1 and the fourth door D4 may be opened in a state where the second door D2 and the third door D3 are closed with the inspection of the component B by the inspection module 23 . And the component B can be transferred to the standby module 22 and the discharge module 25, respectively.

The component B which has been inspected and transferred to the discharge module 25 can be transferred to a predetermined position. The discharge module 25 can transfer the part B to a predetermined position by a suitable conveying means such as a conveying conveyor C5 and a driving device such as a motor.

C2, C3, C4, C5 in the illustrated embodiment, the input module 21, the standby module 22, the inspection module 23, the discharge standby module 24 and the discharge module 25, And is suggested to operate independently. The conveying conveyors C1, C2, C3, C4, and C5, which are related to each other according to the design, may have a structure that operates together. At least the conveying conveyor C2 of the standby module 22 and the conveying conveyor C3 of the inspection module 23 can be designed or controlled to be operated simultaneously. The transfer structure can be designed in a variety of structures, and the operation of each of the doors D1, D2, D3, D4 can be operated in a similar manner.

As described above, the inspection apparatus 20 according to the present invention controls the transfer of the component B to the inspection module 23 by the control module and the transfer of the component B to the standby module 22 and the discharge module 25 ) Are related to each other. At the same time, at least two parts B are inspected continuously. Due to such a structure, the inspection apparatus 20 according to the present invention effectively shields the leakage of the X-rays and improves inspection efficiency.

Hereinafter, the process of inspection by such a device will be described.

FIG. 3 is a flowchart illustrating an example of the progress of the inspection method according to the present invention.

Referring to FIG. 3, a component may be supplied first for inspection (S31). As described above, a component can be, for example, a component such as a battery, but is not limited thereto. When the parts are supplied, the number of parts in the inspected group can be determined (S32). The number of parts of the inspected group can be, for example, 2 to 5, and can be determined by the structure of the part or the arrangement structure of the x-ray tube. When the number of parts belonging to the inspected group or the number of parts to be moved at one time is determined (S32), the mobile correlation can be determined (S33). The mobile correlation refers to the relative visual relationship in which the components are transferred from the supply module, the standby module, the inspection module, the discharge standby module and the discharge module. For example, the time at which the component is transferred from the standby module to the inspection module may be the same as the time at which the component is transferred to the discharge standby module in the inspection module. The mobile correlation also includes determining the correlation of door opening and closing times established between each module. The mobile correlation is predetermined and can be set in the control module.

When the mobile correlation is determined and set in the control module for operation, the component can be transferred and supplied to each module (S34). And can be examined by an x-ray tube. The control module may determine whether the inspection has been completed (S35). The determination as to whether or not the inspection has been completed means, for example, whether or not the operation to be performed in each module is completed. For example, determining whether a predetermined number of parts have been transferred from the input module to the standby module in the course of the inspection process in the inspection module, or whether the transfer has been performed within a predetermined time range. It also includes a judgment as to whether the door is open or closed.

If it is judged that the inspection has not been completed (NO), the mobile correlation needs to be determined again (S33). For example, the part needs to be set again for the transfer time, the door opening / closing time, or the inspection start time. On the other hand, if the test is completed (YES), the test can be continuously performed automatically (S36). Then, the inspected part is discharged and a new part can be input for inspection (S37). Each transport process and whether the door is opened or closed can be continuously detected in the course of the inspection (S38). Continuous detection of such an inspection process is required for the occurrence of malfunctions due to cumulative errors or the efficiency of correlation determination. Once all parts have been inspected, the results can be saved. The results may include, for example, information relating to the operation, such as a result of a part inspection, an error generated during the operation, or a transport time of the component at each stage.

The inspection process according to the present invention can be performed through various processes, and the present invention is not limited to the embodiments shown.

The inspection apparatus according to the present invention has an advantage that inspection efficiency can be improved by allowing a plurality of parts to be simultaneously inspected. In addition, the inspection method according to the present invention has an advantage that the safety of inspection can be ensured by allowing a series of operations such as input, air, shielding, inspection, and discharge to be performed with relevance.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

11: Control module 12: Input module
13: standby module 14: inspection module
15: discharge waiting module 16: image module
20: Inspection device 21: Input module
22: standby module 23: inspection module
24: Discharge Standby Module 25: Discharge Module
141: X-ray tube 142: Detector
231a, 231b: X-ray tube 232a, 232b: Detector
211: guide unit 212: driving means
221: shield tunnel 234: inspection stage
234a: drive device 241: shielding tunnel

Claims (2)

The parts to be inspected are classified into inspection groups including at least two parts based on the number of parts to be delivered at one time;
A step in which the first test group is put into the standby module from the supply module,
The first inspected group is transferred to the inspection module, and the second inspection group is transferred to the standby module to wait in a shielded state;
Inspecting the components of the 1-inspected group by at least two X-ray tubes and detectors installed in the inspection module;
A first inspected group having been inspected is transferred to the discharge waiting module and simultaneously the second inspected group is transferred to the inspection module;
The three-subject inspection group located in the input module is transferred to the standby module; And
And inspecting the parts of the DUT inspection group,
The inspection positions of the same group of components inspected by different X-ray tubes in the inspection module are different from each other, and at the same time inspection of at least two parts belonging to the same group by the respective X-
A first door and a fourth door that are opened and closed at the same time are disposed between the supply module and the standby module and the discharge standby module, respectively, and the number of parts included in the group to be inspected is a relative time Wherein the plurality of components are determined by a related mobile correlation.

















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