Blister tray detection device

Abstract

The utility model discloses a blister tray detection device, including lower frame, lower frame is equipped with conveyer belt through transmission shaft and conveyer wheel, be equipped with riser on the lower frame, and the riser top is equipped with first sliding block through first lead screw, and the first sliding block is equipped with visual inspection camera through electric push rod, and the riser still is equipped with second sliding block through second lead screw, and one side of second sliding block is equipped with tray positioning seat through bearing and connecting shaft rotation, and one end of connecting shaft is drivenly connected with first motor through gear set, and the tray positioning seat is equipped with two third sliding blocks and two first clamping plates through third lead screw opposite thread, the utility model discloses through conveyer belt horizontal conveyance the blister tray of detection to be detected to the detection station below visual inspection camera downside, then through visual inspection camera to blister tray carries out the photographing detection to blister tray, and utilizes conveyer belt horizontal continuous feeding and discharging to carry out visual inspection, is favorable to improve the efficiency of blister tray detection.

Description

Technical Field

[0001] This utility model relates to the field of blister tray testing technology, specifically a blister tray testing device. Background Technology

[0002] In the market, food trays are generally trays with multiple internal compartments, typically used in conjunction with packaging bags to package food. When placing food or snacks, these compartments hold them in place, preventing them from being crushed due to bumps during transportation. Food tray manufacturers need to conduct random inspections of the trays during production. To ensure that the produced trays are more uniform and aesthetically pleasing, they need to check for any signs of warping.

[0003] A prior art patent application (application number 202322417290.7) describes a plastic blister tray inspection device, which includes a fixed plate. A light-illuminating module is coaxially rotatably mounted on the fixed plate, and a coloring module is rotatably mounted above the light-illuminating module and located above a support frame. This device can visually inspect whether the tray is twisted, and can also visually inspect the tray's transparency by illuminating it with light, thereby detecting the thickness of the tray at various locations. It can also separately inspect the top of the tray and the shallowest part of the tray's groove to visually detect whether the depth of different parts of the tray is the same, thus ensuring that the quality of products entering the market meets the standards. However, manually inspecting each blister tray one by one is not convenient for continuous loading and unloading inspection, resulting in low efficiency in blister tray inspection. Utility Model Content

[0004] The purpose of this invention is to provide a blister tray inspection device to solve the problem that the existing technology uses manual inspection of blister trays one by one, which is inconvenient for continuous loading and unloading and results in low efficiency of blister tray inspection.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a blister tray inspection device, comprising a lower frame, a conveyor belt provided inside the lower frame via a drive shaft and a conveyor wheel, an upright frame provided in the upper middle part of the lower frame, a first slider provided at the top of the upright frame via a first lead screw, a visual inspection camera provided at the lower end of the first slider via an electric push rod, a second slider provided on the side wall of the upright frame via a second lead screw, a tray positioning seat rotatably provided on one side of the second slider via a bearing and a connecting shaft, a first motor being connected to one end of the connecting shaft via a gear set, two third sliders being provided on one side of the tray positioning seat via opposing threads of a third lead screw, a first clamping plate being provided at one end of the third slider, and a second clamping plate being provided inside the first clamping plate via a clamping cylinder for vertical clamping.

[0006] Furthermore, the gear set is a reduction gear, and the first motor is fixedly mounted on the outer wall of the second slider.

[0007] Furthermore, one end of the drive shaft is connected to a second motor via a belt flywheel assembly, and the second motor is fixedly mounted on the outer wall of the lower frame.

[0008] Furthermore, the clamping cylinder is a double-headed cylinder, and the second clamping plate is symmetrically arranged in two sets above and below the first clamping plate.

[0009] Furthermore, the second clamping plate has a clamping claw that is elastically slidable within the limiting groove by a guide rod and a spring, and the clamping claw is configured as a Z-shaped claw.

[0010] Furthermore, the inner side of the gripper is provided with a protective pad, and multiple grippers are provided at equal intervals.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model uses a conveyor belt to horizontally transport the blister tray to be inspected to the inspection station below the vision inspection camera. The vision inspection camera then takes pictures of the blister tray. The picture information is processed by the PLC-controlled controller and compared with qualified pictures stored in the PLC control system for visual inspection. The use of the conveyor belt for continuous horizontal loading and unloading for visual inspection helps to improve the efficiency of blister tray inspection.

[0013] 2. In this utility model, the side wall of the upright frame is also provided with a second slider via a second lead screw. A tray positioning seat is rotatably provided on one side of the second slider via a bearing and a connecting shaft. The tray positioning seat is provided with two third sliders and two first clamping plates via a third lead screw with opposing threads. This allows the tray positioning seat to be driven to move downward by the second lead screw, and then the two first clamping plates to move closer to the outer wall of the blister tray via the third lead screw for lateral clamping and fixing of the blister tray. Then the tray positioning seat is driven to move upward by the second lead screw. Subsequently, the connecting shaft and the tray positioning seat are driven to rotate longitudinally by 180° via a first motor and gear set for visual inspection after the blister tray is flipped over, which facilitates the improvement of inspection accuracy.

[0014] 3. In addition, the first clamping plate is equipped with a second clamping plate that clamps vertically through a clamping cylinder. The limiting groove of the second clamping plate is equipped with a claw that slides elastically through a guide rod and a spring. The claw can be moved and adjusted by the cylinder inside the second clamping plate, which can clamp and fix the upper and lower sides of both ends of the blister tray. This improves the stability of clamping and fixing the blister tray and is beneficial to improving the stability of flipping and adjusting the blister tray. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a first-view structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the second-view structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the second clamping plate structure of this utility model.

[0019] In the diagram: 1. Lower frame; 2. Conveyor belt; 3. Stand; 4. Second lead screw; 5. Second slider; 6. First lead screw; 7. First slider; 8. Electric push rod; 9. Vision inspection camera; 10. Pallet positioning seat; 11. Third lead screw; 12. Third slider; 13. First clamping plate; 14. Drive shaft; 15. Second motor; 16. Belt flywheel assembly; 17. Connecting shaft; 18. Gear assembly; 19. First motor; 20. Clamping cylinder; 21. Second clamping plate; 22. Guide rod; 23. Gripper; 24. Spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 , Figure 2 , Figure 3In this embodiment of the utility model, a blister tray inspection device includes a lower frame 1 and a PLC control cabinet. The PLC control cabinet is equipped with a controller and a memory, and has a display screen and control buttons on the outside for easy overall operation. Inside the lower frame 1, a conveyor belt 2 is provided through a drive shaft 14 and a conveyor wheel. One end of the drive shaft 14 is connected to a second motor 15 through a belt flywheel assembly 16, and the second motor 15 is fixedly installed on the outer wall of the lower frame 1. The gear set 18 is a reduction gear. A first motor 19 is fixedly installed on the outer wall of the second slider 5. A stand 3 is provided in the middle of the lower frame 1 to facilitate the horizontal conveying of the blister tray to the inspection station below the vision inspection camera 9 for visual inspection via the conveyor belt 2. A first slider 7 is provided at the top of the stand 3 through a first lead screw 6. A vision inspection camera 9 is provided at the lower end of the first slider 7 through an electric push rod 8. The vision inspection camera 9 is an industrial camera that takes pictures of the blister tray. The picture information is processed by the controller controlled by the PLC and compared with qualified pictures stored in the PLC control system for visual inspection.

[0022] like Figure 1 and Figure 2 As shown, in order to adjust the flipping of the blister tray, a second slider 5 is also provided on the side wall of the upright 3 via a second lead screw 4. A tray positioning seat 10 is rotatably provided on one side of the second slider 5 via a bearing and a connecting shaft 17. One end of the connecting shaft 17 is connected to a first motor 19 via a gear set 18. Two third sliders 12 are threaded in opposite directions on one side of the tray positioning seat 10 via a third lead screw 11. A first clamping plate 13 is provided at one end of the third slider 12. Inside the first clamping plate 13, a second clamping plate 21 is provided in the vertical direction via a clamping cylinder 20. This allows the tray positioning seat 10 to be driven down by the second lead screw 4, and then the two first clamping plates 13 to be driven to move closer to the outer wall of the blister tray via the third lead screw 11 to clamp and fix the blister tray laterally. Then, the tray positioning seat 10 is driven up by the second lead screw 4. Subsequently, the connecting shaft 17 and the tray positioning seat 10 are driven to rotate 180° longitudinally by the first motor 19 and the gear set 18 to flip the blister tray and then visually inspect it again to improve the accuracy of the inspection.

[0023] like Figure 1 and Figure 3As shown, in order to improve the stability of clamping and fixing the blister tray, the clamping cylinder 20 is a double-headed cylinder, and the second clamping plate 21 is symmetrically arranged with two sets of clamps about the first clamping plate 13. The clamping claws 23 are elastically slidably arranged in the limiting groove inside the second clamping plate 21 through the guide rod 22 and the spring 24. The clamping claws 23 are set as Z-shaped claws, so that the clamping claws 23 can be moved and adjusted by the cylinder inside the second clamping plate 21, which can clamp and fix the upper and lower sides of both ends of the blister tray, which can improve the stability of clamping and fixing the blister tray and improve the stability of flipping and adjusting the blister tray. In addition, the inner side of the clamping claws 23 is provided with protective pads, and multiple clamping claws 23 are evenly spaced, which can achieve the purpose of elastic detection and fixing to prevent damage to the blister tray by rigid clamping.

[0024] To prevent the blister tray from being damaged by excessive clamping force from the first clamping plate 13 and the gripper 23, a pressure sensor is also provided on one side of the first clamping plate 13 and the gripper 23 to limit the clamping force.

[0025] The working principle and usage process of this utility model are as follows: During use, the blister tray to be inspected is placed flat at the feed end of the conveyor belt 2. The conveyor belt 2 horizontally transports the blister tray to the inspection station below the vision inspection camera 9. The vision inspection camera 9 then takes a picture of the blister tray. The picture information is processed by the PLC-controlled controller and compared with qualified pictures stored in the PLC control system for visual inspection. Qualified blister trays are directly conveyed horizontally and discharged sequentially. When a product fails the inspection, the conveyor stops, and the controller activates an alarm to warn relevant personnel to manually drive away the unqualified product. The continuous horizontal loading and unloading of the conveyor belt 2 for visual inspection improves the efficiency of blister tray inspection.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A blister tray detection device, comprising a lower frame (1), characterized in that: The lower frame (1) is equipped with a conveyor belt (2) via a drive shaft (14) and a conveyor wheel. The upper middle part of the lower frame (1) is equipped with a stand (3). The top of the stand (3) is equipped with a first slider (7) via a first lead screw (6). The lower end of the first slider (7) is equipped with a vision inspection camera (9) via an electric push rod (8). The side wall of the stand (3) is also equipped with a second slider (5) via a second lead screw (4). The second slider (5) is equipped with a tray positioning seat (10) rotatably via a bearing and a connecting shaft (17) on one side. One end of the connecting shaft (17) is connected to a first motor (19) via a gear set (18). The tray positioning seat (10) is equipped with two third sliders (12) threaded in opposite directions via a third lead screw (11) on one side. One end of the third slider (12) is equipped with a first clamping plate (13). The first clamping plate (13) is equipped with a second clamping plate (21) clamped in the vertical direction via a clamping cylinder (20).

2. The blister tray detection device according to claim 1, characterized in that: The gear set (18) is a reduction gear, and the first motor (19) is fixedly installed on the outer wall of the second slider (5).

3. The blister tray detection device according to claim 1, characterized in that: One end of the drive shaft (14) is connected to a second motor (15) via a belt flywheel assembly (16), and the second motor (15) is fixedly installed on the outer wall of the lower frame (1).

4. The blister tray detection device according to claim 1, characterized in that: The clamping cylinder (20) is a double-headed cylinder, and the second clamping plate (21) is provided with two sets of clamping plates symmetrically above and below the first clamping plate (13).

5. The blister tray detection device according to claim 4, characterized in that: The second clamping plate (21) has a clamping claw (23) that slides elastically in the limiting groove through the guide rod (22) and the spring (24), and the clamping claw (23) is configured as a Z-shaped claw.

6. The blister tray detection device according to claim 5, characterized in that: The gripper (23) has a protective pad on its inner side, and the gripper (23) has multiple grippers at equal intervals.

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