Sealing detection device for wafer box packaging bag

Abstract

The utility model provides a sealing detection device of a wafer box packaging bag, which comprises four grasping clamps positioned on the same horizontal plane, the grasping clamps are used for clamping and pulling the outer end part of the sealing opening of the packaging bag, so that the whole sealing opening is X-shaped, and then the grasping clamps are respectively adsorbed on the outer surfaces, which are relatively far away from each other, of two thin film layers of a single impressing belt through suction cups. The two film layers are separated through the action of being far away from each other in the opposite direction, so that the upper edge of the impressing belt pleat is exposed, then a coloring agent is sprayed to the upper edge of the pleat through a spray head, and the sealing performance of a seal is judged by observing the permeation dyeing condition of the lower edge of the pleat. AI automatic identification can be realized through a camera in combination with a vision algorithm in the observation process, so that the problem of misjudgment caused by current vision is effectively monitored. The monitoring mode can further judge the rationality of the heat sealing procedure of the packaging equipment, whether the high-temperature cloth type selection is reasonable or not and whether the operator has the qualification or not, and meanwhile, the influence of packaging sealing on wafer particle pollution is also reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtightness test technical field, especially a kind of sealing detection device of wafer box packing bag. BACKGROUND

[0002] Wafer is placed in special wafer box first in packaging process, then wafer box is loaded into wafer special packing bag, finally vacuum treatment is carried out to packing bag, to complete the whole packaging process.Packing bag is a kind of packing material specially designed for wafer shipment, and the left and right side walls of the packing bag are pre-fabricated with vertical creases, the left and right edges of the bag opening are folded inward along the creases, the front and rear edges are close to each other, and are pressed and heated after being attached, forming two V-shaped seals and a horizontal seal connecting the two V-shaped seals.

[0003] In wafer box packaging process, if bag opening alignment is not accurate or operation method is not uniform, air leakage risk is easily caused, especially in the junction area of V-shaped seal and horizontal seal, abnormal condition occurrence rate is higher.In addition, the model of high-temperature cloth selected when sealing will directly affect the sealing quality.The good or bad of packing bag sealing quality is directly related to whether product is contaminated, and even customer complaint can be caused in serious case.Therefore, sealing performance is the key index for evaluating the rationality of heat sealing procedure, the applicability of high-temperature cloth selection and the qualification of operator.

[0004] At present, the sealing quality under manual packaging equipment can only rely on the experience of operator to make subjective judgment, and due to visual difference, misjudgment is difficult to avoid.Once sealing abnormality occurs, it will lead to packaging air leakage, and further affect product quality and particle level. UTILITY MODEL CONTENT

[0005] In view of the shortcomings of the prior art mentioned above, the present invention provides a sealing detection device for a wafer box packaging bag, wherein the left and right side walls of the packaging bag are pre-formed with vertical folds, the left and right edges of the bag opening are folded inward along the folds, the front and rear edges are close to each other, and a seal is formed after being pressed together; the seal comprises two V-shaped seals and a transverse seal connecting the two V-shaped seals, the openings of the two V-shaped seals are away from each other and face the outside of the packaging bag, a single V-shaped seal comprises two embossed belts, the transverse seal and the single embossed belt both comprise two layers of film layers bonded by heat pressing, and the bonding part of the two film layers Forming creases; the sealing detection device includes four grippers located in the same horizontal plane, the grippers are used to clamp and pull the outer end of the embossing belt, so that the opening of the V-shaped seal is opened and kept in a taut state; the sealing detection device also includes multiple groups of suction cup pairs, a single group of suction cup pairs includes two suction cups, the two suction cups are respectively adsorbed on the relatively distant outer surfaces of the two film layers, and the two film layers are separated by the movement towards each other, thereby revealing the upper edge and / or lower edge of the crease of the embossing belt; the sealing detection device also includes a nozzle, which is used to spray colorant on the upper edge of the crease.

[0006] Optionally, the sealing detection device is further provided with a camera for photographing the bleeding condition of the lower edge area of ​​the pleat.

[0007] Optionally, the sealing detection device is further equipped with a linear track arranged along the X direction for moving the suction cup, the nozzle and the camera along the left and right directions.

[0008] Optionally, the suction cup, the nozzle and the camera are all connected to the mobile base via a telescopic rod, and the mobile base is located on a track.

[0009] Optionally, the telescopic rod includes a first telescopic segment and a second telescopic segment vertically connected, wherein the first telescopic segment is used to adjust the height of the telescopic rod in the vertical direction, and the second telescopic segment is used to adjust the extension length of the telescopic rod in a direction perpendicular to the track.

[0010] Optionally, there are three groups of tracks, which are used for moving the suction cup, the nozzle and the camera respectively.

[0011] Optionally, each track group includes two parallel track lines, and the two track lines are arranged on the front and back sides of the packaging bag seal.

[0012] Optionally, the packaging bag seal is divided into a front half and a rear half along the vertical plane where the transverse seal strip is located; the front half and the rear half are both equipped with a nozzle and a camera.

[0013] Optionally, a computer terminal is connected to the camera to receive images captured by the camera.

[0014] Optionally, there are five groups of suction cup pairs in total to simultaneously perform film layer separation operations on four embossing strips and one transverse sealing strip.

[0015] As described above, the present invention provides a sealing detection device for wafer box packaging bags, which includes four grippers located on the same horizontal plane. The grippers are used to clamp and pull the outer end of the packaging bag seal so that the entire seal is X-shaped. The grippers are then respectively adsorbed on the relatively distant outer surfaces of the two film layers of a single embossing belt through suction cups. The two film layers are separated by the movement of moving away from each other, thereby revealing the upper edge of the fold of the embossing belt. The colorant is then sprayed on the upper edge of the fold through a nozzle, and the sealing of the seal is determined by observing the seepage condition of the lower edge of the fold. The observation process can realize AI automatic recognition through a camera and combined with a visual algorithm, thereby effectively monitoring the misjudgment problem caused by the current visual observation. This monitoring method can further judge the rationality of the heat sealing procedure of the packaging equipment, evaluate whether the selection of high-temperature cloth is reasonable, and evaluate whether the operator has the qualifications to work. At the same time, it also reduces the impact of the packaging seal on wafer particle contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic structural diagram of the wafer box packaging bag in the present invention.

[0017] Figure 2 Shown is a schematic structural diagram of the sealing of the wafer box packaging bag in the present invention.

[0018] Figure 3 Shown is a schematic diagram of the overall structure of the sealing detection device in the present invention.

[0019] Figure 4 Shown is a schematic diagram of the suction cup operation process of the sealing detection device in the present invention.

[0020] Figure 5 Shown is a schematic diagram of the nozzle operation process of the sealing detection device in the present invention.

[0021] Figure 6 Shown is a schematic diagram of the camera operation process of the sealing detection device in the present invention.

[0022] Explanation of component numbers: packaging bag 10; seal 100; V-shaped seal 111; transverse seal 112; embossing belt 113; film layer 121; pleat 101; gripper 11; suction cup 12; nozzle 13; camera 14; telescopic rod 20; first track 21; second track 22; third track 23. DETAILED DESCRIPTION

[0023] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0024] For ease of explanation, when describing the embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. These schematic views are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0025] For ease of description, spatially relative terms such as "under," "below," "below," "below," "above," and "on" may be used herein to describe the relationship of one element or feature to other elements or features shown in the drawings. It will be understood that these spatially relative terms are intended to encompass orientations of the device in use or operation in addition to the orientation depicted in the drawings. Additionally, when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or one or more intervening layers may be present. As used herein, "between" is inclusive of both endpoints.

[0026] In the context of the present application, a structure described as a first feature being "above" a second feature may include embodiments where the first and second features are formed in direct contact, and may also include embodiments where an additional feature is formed between the first and second features, such that the first and second features may not be in direct contact.

[0027] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0028] The utility model provides a sealing detection device for a wafer box packaging bag, wherein the left and right side walls of the packaging bag 10 are prefabricated with vertical folds, the left and right edges of the bag opening are folded inward along the folds, and the front and rear edges are close to each other and pressed together to form a seal 100. Figure 1 、 Figure 2As shown, the seal 100 includes two V-shaped seals 111 and a transverse seal 112 connecting the two V-shaped seals 111. The openings of the two V-shaped seals 111 are away from each other and face the outside of the packaging bag. The single V-shaped seal 111 includes two embossed belts 113. The transverse seal 112 and the single embossed belt 113 both include two film layers 121 bonded by heat and pressure. The bonding point of the two film layers 121 forms a pleat 101.

[0029] like Figure 3 、 Figure 4 As shown, the sealing detection device includes four grippers 11 located on the same horizontal plane. The grippers 11 are used to clamp and pull the outer end of the embossing belt 113 to open the opening of the V-shaped seal 111 and keep it in a taut state.

[0030] The sealing detection device also includes multiple groups of suction cup pairs, and a single group of suction cup pairs includes two suction cups 12. The two suction cups 12 are respectively adsorbed on the relatively distant outer surfaces of the two film layers 121, and the two film layers 121 are separated by the movement of moving away from each other, thereby revealing the upper edge and / or lower edge of the embossed belt fold 101. Here, the suction cup is a key component, which is used to separate the film layers to clearly and accurately reveal the folds, providing crucial visual and operational conditions for subsequent detection and identification. After the film layers are separated, the sealing can be tested by traditional methods such as blowing. The present application provides an improved method based on visual detection, which realizes rapid and intuitive detection of the seal by spraying a colorant. This method utilizes the color-rendering characteristics of the colorant at the leakage point, which can clearly identify small defects and penetration paths, significantly improving the efficiency and accuracy of detection.

[0031] Furthermore, the sealing detection device further includes a nozzle 13 , which is used to spray colorant onto the upper edge of the pleat 101 , and to determine the sealing performance of the seal by observing the dyeing condition at the lower edge of the pleat 101 .

[0032] Furthermore, there are a total of 5 groups of suction cup pairs, and this configuration can simultaneously perform separation operations on the film layers at a total of five positions of four embossing belts and one transverse sealing strip, so as to improve operating efficiency.

[0033] Furthermore, the seal inspection device is equipped with a camera 14, which accurately captures the bleed condition at the lower edge of the pleat. The camera is connected to a computer terminal, and the captured images are transmitted to the computer in real time. These images can be evaluated in two ways: manually by an operator to review the image quality, or automatically by using machine vision algorithms (AI) to identify bleed defects. Ultimately, this allows for precise seal quality inspection.

[0034] Furthermore, the seal inspection device is equipped with a linear track arranged along the X-direction (left-right direction). This track is used for the left-right movement of the suction cup 12, the nozzle 13, and the camera 14. The track serves as the basic path for the horizontal movement of the actuator components such as the suction cup, the nozzle, and the camera, allowing them to be flexibly adjusted in position.

[0035] Specifically, the suction cup, nozzle, and camera are all connected to a mobile base via a telescopic rod 20, which is located on a track. The telescopic rod 20 comprises a first and a second vertically connected telescopic segment. The first segment adjusts the rod's vertical height, while the second segment adjusts its extension perpendicular to the track (i.e., the front-to-back direction). The left-right movement provided by the track, combined with the vertical raising and lowering of the first segment and the fore-and-aft extension of the second segment, allows the system to achieve precise positioning at any location in three-dimensional space, greatly enhancing operational flexibility.

[0036] Furthermore, to enhance motion independence and control precision, three tracks are provided, one for each of the suction cup, the other for the nozzle, and the camera. Specifically, the first track 21 is used to move the suction cup 12; the second track 22 is used to drive the camera 14; and the third track 23 is used to drive the nozzle 13. This multi-track layout avoids motion interference between components, improving overall coordination and production efficiency.

[0037] Furthermore, each track group includes two parallel track lines, and the two track lines are arranged on the front and back sides of the packaging bag seal 100.

[0038] Furthermore, the packaging bag seal is divided into the front half and the back half along the vertical plane where the transverse seal is located. In view of this partition design, the configuration of the nozzle 13 and the camera 14 adopts a dual-unit layout: one group of nozzles 13 and cameras 14 is responsible for the spraying and shooting operations in the front half area, and the other group is responsible for the corresponding processing of the back half area at the same time. This design realizes the parallel operation of the front and back halves, significantly improving the processing speed of marking and detection. Figure 5 、 Figure 6 As shown, the spraying and shooting paths of the front half are C and D, and the spraying and shooting paths of the back half are A and B.

[0039] The working process of the sealing detection device is as follows: after the sealing of the packaging bag is removed, the sealing is cut and placed in a specified area of the sealing detection device, is fixed by the four edge clamps, is straightened along the left-right direction (x direction) until in place, and then is moved along the front-back direction (y direction) to make the whole sealing sample present an "X shape". The inner and outer sides of the middle part of each embossed tape have two suction cups respectively, and the two suction cups are respectively adsorbed to the outer surfaces of the two film layers of the single embossed tape which are relatively far away from each other, so that the two film layers are separated from above the embossed part, and thus the upper edge of the embossed part of the embossed tape is exposed. Then, the nozzle filled with the coloring agent sprays the coloring agent uniformly through the connecting pipe according to the predetermined position, and after the spraying is completed, the nozzle returns to the original position. After the sample is vertically placed for a period of time, the suction cup moves to below the embossed part to separate the two film layers from below the embossed part, and thus the lower edge of the embossed part of the embossed tape is exposed. The bottom camera moves to the center and continuously takes pictures to see whether the coloring agent penetrates. If there is no penetration, it is determined to be qualified, and if there is penetration, it means that the packaging bag is not tightly sealed and there is a problem of air leakage. After the work is completed, the suction cup and the camera return to the original position, and the sample is removed.

[0040] In summary, the sealing detection device of the wafer box packaging bag provided by the present application comprises four clamps located on the same horizontal plane, the clamps are used for clamping and pulling the outer end of the sealing of the packaging bag, so that the whole sealing presents an X shape, then the suction cups are respectively adsorbed to the outer surfaces of the two film layers of the single embossed tape which are relatively far away from each other, the two film layers are separated by the action of moving away from each other, so that the upper edge of the embossed part of the embossed tape is exposed, then the nozzle sprays the coloring agent to the upper edge of the embossed part, and the sealing tightness is determined by observing the penetration condition of the lower edge of the embossed part. The observation process can be realized by the camera and combined with the visual algorithm to realize AI automatic identification, so as to effectively monitor the misjudgment problem caused by current visual inspection. The monitoring method can further evaluate whether the high-temperature cloth type is reasonable, whether the operator has the on-duty qualification, and make a judgment, and also reduces the influence of the packaging sealing on the wafer particle pollution.

[0041] The above embodiment only exemplarily illustrates the principle and effect of the present application, and is not used to limit the present application. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A seal detection device for a wafer box packaging bag. The left and right side walls of the packaging bag are prefabricated with vertical creases. The left and right edges of the bag opening are folded inward along the creases, and the front and rear edges are brought close together and pressed together to form a seal. The seal comprises two V-shaped seals and a transverse seal connecting the two V-shaped seals. The openings of the two V-shaped seals are spaced apart and face outward from the packaging bag. Each V-shaped seal comprises two embossed strips. Both the transverse seal and the single embossed strip comprise two layers of film bonded together by heat and pressure, with pleats formed at the bond between the two film layers. It is characterized by: The sealing detection device includes four grippers located on the same horizontal plane, the grippers are used to clamp and pull the outer end of the embossing belt to open the opening of the V-shaped seal and keep it taut; The sealing detection device also includes multiple groups of suction cup pairs, a single group of suction cup pairs includes two suction cups, the two suction cups are respectively adsorbed on the relatively distant outer surfaces of the two film layers, and the two film layers are separated by the movement towards each other, thereby revealing the upper edge and / or lower edge of the fold of the embossed belt; the sealing detection device also includes a nozzle, which is used to spray colorant on the upper edge of the fold.

2. The wafer box packaging bag sealing detection device according to claim 1, characterized in that: The sealing detection device is further provided with a camera for photographing the bleeding condition of the lower edge area of ​​the pleat.

3. The wafer box packaging bag sealing detection device according to claim 2, characterized in that: The sealing detection device is further equipped with a linear track arranged along the X direction for moving the suction cup, the nozzle and the camera along the left and right directions.

4. The wafer box packaging bag sealing detection device according to claim 3, characterized in that: The suction cup, the nozzle and the camera are all connected to the mobile base through a telescopic rod, and the mobile base is located on a track.

5. The wafer box packaging bag sealing detection device according to claim 4, characterized in that: The telescopic rod includes a first telescopic segment and a second telescopic segment that are vertically connected, wherein the first telescopic segment is used to adjust the height of the telescopic rod in the vertical direction, and the second telescopic segment is used to adjust the extension length of the telescopic rod in a direction perpendicular to the track.

6. The wafer box packaging bag sealing detection device according to claim 4, characterized in that: There are three groups of tracks in total, which are used for moving the suction cup, the nozzle and the camera respectively.

7. The wafer box packaging bag sealing detection device according to claim 6, characterized in that: Each track set includes two parallel track lines, which are located on the front and back sides of the packaging bag sealing.

8. The wafer box packaging bag sealing detection device according to claim 2, characterized in that: The packaging bag seal is divided into a front half and a back half along the vertical plane where the transverse seal is located; both the front half and the back half are equipped with nozzles and cameras.

9. The wafer box packaging bag sealing detection device according to claim 2, characterized in that: The computer terminal is connected to the camera to receive images captured by the camera.

10. The wafer box packaging bag sealing detection device according to claim 1, characterized in that: There are five groups of suction cups in total to simultaneously perform film layer separation operations on four embossing strips and one transverse sealing strip.

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