Sealing detecting and screening device for vacuum package

Abstract

The invention relates to the technical field of package detection, in particular to a vacuum package sealing detection screening device which comprises two vacuum detectors and a screening conveying line, the screening conveying line is arranged below discharge ports of the vacuum detectors, and the discharge ports of the two vacuum detectors are arranged on the screening conveying line in a staggered mode. According to the areca-nut packaging sorting device, the main conveying frame and the auxiliary conveying frame are arranged in a stepped mode, under driving of the electric telescopic cylinder and the small electric push rod, double rows or even more rows of areca-nut packages can be sorted, through the arrangement of the auxiliary conveying frame and the connecting pieces, the areca-nut packaging sorting device can be used for sorting areca-nut packages, and the sorting efficiency is improved. When equipment needs to be expanded in the later period, corresponding auxiliary conveying frames are installed side by side in a step shape, multiple rows of areca-nut packages can be sorted at the same time, the convenience performance of the device is greatly improved, and the investment cost is low.

Description

Technical Field

[0001] This invention relates to the field of packaging inspection technology, and in particular to a vacuum packaging seal inspection and screening device. Background Technology

[0002] Vacuum packaging of areca nuts effectively isolates oxygen, inhibits microbial growth, prevents moisture absorption and oxidation, and significantly extends shelf life. To ensure that each bag of areca nuts meets the vacuum standard, modern production lines are equipped with automatic vacuum detection devices. These devices monitor the air pressure inside the packaging bag in real time using pressure sensors or vacuum gauges to determine whether the set vacuum level has been reached. The equipment also integrates a visual recognition system to detect whether the packaging is bulging or whether the seal is intact, automatically rejecting defective products. This device is usually linked to the vacuum packaging machine and has information feedback and alarm functions to ensure that each piece of areca nut is in a good vacuum state before leaving the factory, thus guaranteeing product quality.

[0003] Existing vacuum packaging lines for betel nuts generally adopt a visual inspection solution with a single-row belt and a fixed camera. A single line can only photograph and sort a single or double row of finished products. When companies need to expand their production capacity, they can only stack multiple independent inspection units in parallel, resulting in a significant increase in equipment footprint, high investment costs, and numerous maintenance points. Furthermore, it is difficult to unify and trace data between different lines.

[0004] Therefore, a vacuum packaging seal detection and screening device is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by proposing a vacuum packaging sealing detection and screening device.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a vacuum packaging sealing inspection and screening device, comprising a vacuum inspection machine and a screening conveyor line. The screening conveyor line is located below the discharge port of the vacuum inspection machine. Two vacuum inspection machines are provided, and their discharge ports are staggered on the screening conveyor line. A pair of main plates are fixedly connected to the top of the screening conveyor line. The discharge port of one of the vacuum inspection machines is located between the main plates. A secondary plate is fixedly connected to the top of the screening conveyor line, and the discharge port of the other vacuum inspection machine is located between the secondary plate and the main plate. At the position between, the screening conveyor line is also equipped with a sorting mechanism for sorting betel nut packaging, and a vision inspection machine for visual inspection of betel nut packaging. The discharge end of the screening conveyor line is equipped with a main conveyor frame at a position between the main board and the discharge end. A pair of main rollers are rotatably connected to the inner side of the main conveyor frame. A secondary conveyor frame is equipped at the rear side of the main conveyor frame at a position between the main board and the secondary board. The length of the secondary conveyor frame is two-thirds of the length of the main conveyor frame. Top grooves are opened at the top of the main conveyor frame and the secondary conveyor frame near the discharge position. A sorting mechanism for sorting out defective products is also provided.

[0007] In the above technical solution, further, one of the main boards located on the front side has an upper plate fixedly connected to the top of the main board relative to the discharge position of the first vacuum testing machine, and the other main board located on the rear side has a lower plate fixedly connected to the top of the main board relative to the discharge position of the second vacuum testing machine.

[0008] In the above technical solution, the main rollers are further connected by a main conveyor belt, a drive motor is fixedly connected to the front side of the main conveyor frame, the output end of the drive motor passes through the inner side of the main conveyor frame and is fixedly connected to the side wall of one of the main rollers, a pair of auxiliary rollers are rotatably connected to the inner side of the auxiliary conveyor frame, an auxiliary conveyor belt is connected between the auxiliary rollers, both ends of the auxiliary rollers are set through the outer wall of the auxiliary conveyor frame, the main rollers are set through the outer wall of the main conveyor frame on the side near the auxiliary conveyor frame, and an expansion structure for connection is provided between the main rollers and the auxiliary rollers.

[0009] In the above technical solution, the sorting mechanism further includes an electric telescopic cylinder. A fixed frame is fixedly connected to the top of both the main conveyor frame and the auxiliary conveyor frame. A support frame is fixedly connected to the top of the main conveyor frame. The electric telescopic cylinder is fixedly connected to the top of the support frame. A transverse groove is opened at the bottom of each fixed frame. A transverse plate is slidably connected to the inner side of each transverse groove. An L-shaped plate is fixedly connected to the bottom of each transverse plate, and the bottom of each L-shaped plate is inserted into the front top groove. An extrusion plate is slidably connected to the bottom of each fixed frame. A connecting member is provided between the extrusion plates. The output end of the electric telescopic cylinder is fixedly connected to the side wall of the connecting member. A small electric push rod is fixedly connected to the top of each L-shaped plate, and the output end of the small electric push rod passes through the top of the L-shaped plate and is inserted into the inner side of the transverse groove. The small electric push rod is electrically connected to a vision inspection machine via a controller.

[0010] In the above technical solution, a pair of reset springs are fixedly connected between the inner side of the transverse groove and the side wall of the transverse plate. The extrusion plates are inclined on the side near the transverse groove. The outer wall of the top groove located at the rear of the main conveyor frame and the auxiliary conveyor frame are fixedly connected with a discharge frame. The discharge port of the auxiliary conveyor frame is inclinedly fixedly connected with a side frame.

[0011] In the above technical solution, the top of each fixed frame is provided with a vertical groove, the top of each extrusion plate is provided with a pair of rectangular grooves, and the two sides of each rectangular groove are provided with limiting grooves. The bottom end of the connector is inserted into the inner side of two adjacent rectangular grooves on the two extrusion plates. The connector has a pair of cavities inside, and L-shaped blocks for inserting into the limiting grooves are slidably connected to both sides of each cavity. Several limiting springs are fixedly connected between the inner side of the L-shaped blocks and the inner side of the cavities. The top ends of the L-shaped blocks on the adjacent sides are inclined. An adjusting plate is slidably connected to the inner side of the cavity. The two sides of the adjusting plate are inclined, and the inclined surface of the L-shaped blocks fits against the inclined surface of the adjusting plate. The top of the connector is threadedly connected with a pair of upper studs, and the bottom end of the upper studs is rotatably connected to the top of the adjusting plate.

[0012] In the above technical solution, further, the outer wall of the connector is fixedly connected to a pair of top plates at the position above the extrusion plate, the top of the vertical groove is provided with an installation groove at the position above the rectangular groove, the top of the L-shaped block on the opposite side is inclined, and the top of the limiting groove is inclined.

[0013] In the above technical solution, the expansion structure further includes a lower stud, an upper polygonal groove is provided on the rear side of one of the main rollers and one of the auxiliary rollers, a lower polygonal groove is provided on the rear side of the auxiliary roller, a polygonal block is provided on the inner side of the lower polygonal groove, a countersunk hole is provided on the rear side of the lower polygonal groove and is connected to the upper polygonal groove, the lower stud is threaded to the inner side of the countersunk hole, and the side wall of the lower stud is rotatably connected to the side wall of the polygonal block.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention, through the stepped arrangement of the main conveyor frame and the auxiliary conveyor frame, and driven by the electric telescopic cylinder and the small electric push rod, can sort betel nut packages in double rows or even more rows. Furthermore, through the setting of the auxiliary conveyor frame and the connecting parts, when the equipment needs to be expanded in the later stage, the corresponding auxiliary conveyor frames can be installed in a stepped parallel arrangement, so that multiple rows of betel nut packages can be sorted at the same time, which greatly improves the convenience of the device and has low investment costs.

[0015] 2. Through the expansion structure and the setting of the upper stud, the present invention can quickly connect the expanded conveyor line with the original conveyor line drive unit, and can quickly connect the expanded sorting system with the original sorting drive, so that it can be put into operation without installing new drive components, which greatly improves the investment cost of the device. Attached Figure Description

[0016] Figure 1 This is a frontal perspective view of the detection and screening device of the present invention; Figure 2 Appendix of the present invention Figure 1 A magnified view of the structure at point A in the middle; Figure 3 This is a schematic diagram of the overall appearance structure of the screening conveyor line of the present invention; Figure 4 This is a full-section three-dimensional structural diagram of the main conveyor belt and auxiliary conveyor belt of the present invention; Figure 5 This is a rear perspective three-dimensional structural diagram of the main conveyor frame, auxiliary conveyor frame, and fixing frame of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the fixed frame separation part of the present invention; Figure 7 This is a rear-view perspective three-dimensional structural diagram of the main conveyor frame and the auxiliary conveyor frame of the present invention; Figure 8 This is a three-dimensional structural diagram of the fixed frame connection of the present invention, viewed from below. Figure 9 This is a schematic diagram of the three-dimensional structure of the fixed frame side of the present invention; Figure 10This is a schematic diagram of the overall appearance structure of the L-shaped plate of the present invention; Figure 11 This is a schematic diagram of the overall appearance structure of the upper stud, adjusting plate and L-shaped block of the present invention.

[0017] In the diagram: 1. Vacuum inspection machine; 2. Screening conveyor line; 3. Main board; 4. Sub-board; 5. Sorting mechanism; 6. Vision inspection machine; 7. Main conveyor frame; 8. Main roller; 9. Main conveyor belt; 10. Sub-conveyor frame; 11. Top trough; 12. Upper plate; 13. Lower plate; 14. Drive motor; 15. Sub-roller; 16. Sub-conveyor belt; 17. Electric telescopic cylinder; 18. Fixed frame; 19. Support frame; 20. Cross trough; 21. Cross plate; 22. L-shaped plate; 23. Extrusion plate; 24. Connector; 25. Small electric push rod; 26. Return spring; 27. Discharge frame; 28. Side frame; 29. ​​Vertical groove; 30. Rectangular groove; 31. Limiting groove; 32. L-shaped block; 33. Limiting spring; 34. Adjusting plate; 35. Upper stud; 36. Top plate; 37. Lower stud; 38. Upper polygonal groove; 39. Lower polygonal groove; 40. Polygonal block; 41. Countersunk hole. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0020] In practical use, it was found that existing vacuum packaging lines for areca nuts generally adopt a visual inspection solution with a single-row belt and a fixed camera. A single line can only photograph and sort a single or double row of finished products. When enterprises need to expand their production capacity, they can only stack multiple independent inspection units in parallel, which results in a significant increase in equipment footprint, high investment costs, and many maintenance nodes. In addition, it is difficult to unify and trace data between different lines. To solve the above problems, the following structure was invented.

[0021] like Figures 1-11The vacuum packaging sealing inspection and screening device shown includes a vacuum inspection machine 1 and a screening conveyor line 2. The screening conveyor line 2 is mainly composed of a motor, transmission rollers and conveyor belt, etc., and can transport areca nut packaging. It is a mature technology in the prior art and will not be described in detail here. The screening conveyor line 2 is located below the discharge port of the vacuum inspection machine 1. There are two vacuum inspection machines 1, and the discharge ports of the two vacuum inspection machines 1 are staggered on the screening conveyor line 2. A pair of main plates 3 are fixedly connected to the top of the screening conveyor line 2. Through the setting of the main plates 3, a single row of detection channels is set to position and transport the areca nuts to ensure normal sorting in the future. The discharge port of one of the vacuum inspection machines 1 is located between the main plates 3. The top of the screening conveyor line 2 is fixedly connected to a secondary plate 4. Through the setting of the secondary plate 4, another set of detection channels can be formed to facilitate the conveying and inspection of areca nuts discharged from the second vacuum inspection machine 1. Another vacuum inspection machine 1 has its discharge port located between the auxiliary plate 4 and the main plate 3. The screening conveyor line 2 is also equipped with a sorting mechanism 5 for sorting betel nut packaging. The sorting mechanism 5 is mainly composed of hydraulic cylinders and sorting plates. By moving the sorting plates up and down, it ensures that two rows of betel nuts are conveyed at the same position at the same time, thereby realizing the sorting of betel nuts. This is a mature technology in the existing technology and will not be described in detail here. The screening conveyor line 2 is equipped with a vision inspection machine 6 for visual inspection of betel nut packaging. The discharge end of the screening conveyor line 2 is equipped with a main conveyor frame 7 at a position between the main plate 3 and the discharge end. A pair of main rollers 8 are rotatably connected to the inner side of the main conveyor frame 7. The rear side of the main conveyor frame 7 is equipped with an auxiliary conveyor frame 10 at a position between the main plate 3 and the auxiliary plate 4. The length of the auxiliary conveyor frame 10 is two-thirds of the length of the main conveyor frame 7. The top of the main conveyor frame 7 and the auxiliary conveyor frame 10 are both provided with top grooves 11 near the discharge position. A sorting mechanism for sorting out unqualified products is also provided. One of the main boards 3 located on the front side has an upper plate 12 fixedly connected to the top of the upper plate relative to the discharge position of the first vacuum testing machine 1, and the other main board 3 located on the rear side has a lower plate 13 fixedly connected to the top of the lower plate relative to the discharge position of the second vacuum testing machine 1. By setting the upper plate 12 and the lower plate 13, the discharge port of the vacuum testing machine 1 can be blocked to ensure that the discharged areca nuts fall accurately into the designated channel. After vacuum sealing, the areca nuts are neatly placed by workers into the storage box of vacuum testing machine 1. Then, under the operation of the material handling mechanism of vacuum testing machine 1, the areca nuts are taken into the cavity of vacuum testing machine 1. The cavity is evacuated to the set value, and the pressure sensor compares the attenuation curve in real time. If the attenuation exceeds the limit, it is judged as a leak. Then, the qualified or unqualified signal is transmitted to the controller. The tested areca nuts fall onto the screening conveyor line 2. The areca nuts discharged from the two machines are divided into two rows by the main board 3 and the sub-board 4. Then, they pass through the sorting mechanism 5 to arrange the two rows of areca nuts neatly. Then, they pass through the vision inspection machine 6. The camera takes pictures of each row. The AI ​​algorithm simultaneously measures the bag surface bulge, the straightness of the seal, and the integrity of the inkjet printing, and outputs two levels of signals, qualified and unqualified, which are transmitted to the controller. The controller transmits them to the sorting mechanism, which sorts them. The two-stage linkage ensures reliable sealing before leaving the factory.

[0022] A main conveyor belt 9 is driven between the main rollers 8. A drive motor 14 is fixedly connected to the front side of the main conveyor frame 7. The output end of the drive motor 14 passes through the inner side of the main conveyor frame 7 and is fixedly connected to the side wall of one of the main rollers 8. A pair of auxiliary rollers 15 are rotatably connected to the inner side of the auxiliary conveyor frame 10. An auxiliary conveyor belt 16 is driven between the auxiliary rollers 15. Both ends of the auxiliary rollers 15 are set through the outer wall of the auxiliary conveyor frame 10. The main roller 8 is set through the outer wall of the main conveyor frame 7 on the side close to the auxiliary conveyor frame 10. An expansion structure for connection is provided between the main roller 8 and the auxiliary roller 15. The sorting mechanism includes an electric telescopic cylinder 17, a fixed frame 18 fixedly connected to the top of the main conveyor frame 7 and the auxiliary conveyor frame 10, a support frame 19 fixedly connected to the top of the main conveyor frame 7, an electric telescopic cylinder 17 fixedly connected to the top of the support frame 19, a transverse groove 20 opened at the bottom of the fixed frame 18, a transverse plate 21 slidably connected to the inner side of the transverse groove 20, an L-shaped plate 22 fixedly connected to the bottom of the transverse plate 21, and the bottom of the L-shaped plate 22 inserted into the front top groove 11, an extrusion plate 23 slidably connected to the bottom of the fixed frame 18, a connector 24 between the extrusion plates 23, an output end of the electric telescopic cylinder 17 fixedly connected to the side wall of the connector 24, a small electric push rod 25 fixedly connected to the top of the L-shaped plate 22, and the output end of the small electric push rod 25 passes through the top of the L-shaped plate 22 and is inserted into the inner side of the transverse groove 20, and the small electric push rod 25 is electrically connected to the vision inspection machine 6 through the controller; A pair of reset springs 26 are fixedly connected between the inner side of the transverse groove 20 and the side wall of the transverse plate 21. The extrusion plate 23 is inclined on the side near the transverse groove 20. The outer wall of the top groove 11 located at the rear on the main conveyor frame 7 and the auxiliary conveyor frame 10 is fixedly connected with a discharge frame 27. The discharge port of the auxiliary conveyor frame 10 is inclinedly fixedly connected with a side frame 28. When the betel nut packaging after visual inspection is conveyed to the position next to the top groove 11 on the main conveyor belt 9 and the auxiliary conveyor belt 16, the electric telescopic cylinder 17 will be activated to drive the connecting piece 24 to move, thereby pushing the extrusion plate 23 on the fixed frame 18 to move. During this process, since the output end of the horizontal plate 21 and the small electric push rod 25 can only slide laterally within the horizontal groove 20, the pressure from the inclined surface of the extrusion plate 23 will push the output end of the small electric push rod 25 to move, while simultaneously driving the horizontal plate 21 to slide inside the horizontal groove 20, and gradually compressing the return spring 26, thereby pushing the L-shaped plate 22 to move laterally, discharging the unqualified betel nuts from the top groove 11 behind, and then dropping them into the discharge frame 27 for discharge. If the areca nuts are qualified products at this time, the controller will control the small electric push rod 25 on the corresponding channel to retract to the output end. As a result, when the extrusion plate 23 moves, the inclined surface of the extrusion plate 23 will not be able to squeeze the output end of the small electric push rod 25, and thus will not push the L-shaped plate 22 to move. As a result, the qualified areca nuts will be discharged from the discharge position under the conveying of the main conveyor belt 9 or the auxiliary conveyor belt 16. Finally, the electric telescopic cylinder 17 drives the extrusion plate 23 to reset, thereby gradually releasing the extrusion on the output end of the small electric push rod 25. Then, under the elastic force of the reset spring 26, it is pushed to reset. This process is repeated to achieve the sorting of double or multiple rows of areca nuts. The sorting of multiple rows will not be hindered and the space occupied is smaller.

[0023] In summary, through the design of the above structure, the main conveyor frame 7 and the auxiliary conveyor frame 10 are arranged in a stepped manner, and under the drive of the electric telescopic cylinder 17 and the small electric push rod 25, it is possible to sort betel nut packages with two or even more rows.

[0024] Based on the above embodiments, it was found during use that, in addition, the existing racks are mostly welded frames. If a third or fourth row is added later, the entire unit needs to be disassembled or rewired, resulting in a long expansion cycle and severely restricting flexible production. To solve the above problems, further improvements were made to the above structure.

[0025] The top of the fixed frame 18 is provided with a vertical groove 29, and the top of the extrusion plate 23 is provided with a pair of rectangular grooves 30. The rectangular grooves 30 are provided with limit grooves 31 on both sides. The bottom end of the connector 24 is inserted into the inner side of the two adjacent rectangular grooves 30 on the two extrusion plates 23. The connector 24 is provided with a pair of cavities. The two sides of the cavity are slidably connected with L-shaped blocks 32 for insertion into the limit grooves 31. Several limit springs 33 are fixedly connected between the inner side of the L-shaped blocks 32 and the inner side of the cavity. The top of the L-shaped blocks 32 on the side closest to each other is inclined. The inner side of the cavity is longitudinally slidably connected with an adjustment plate 34. The two sides of the adjustment plate 34 are inclined, and the inclined surface of the L-shaped blocks 32 is in contact with the inclined surface of the adjustment plate 34. The top of the connector 24 is threadedly connected with a pair of upper studs 35. The bottom end of the upper studs 35 is rotatably connected to the top of the adjustment plate 34. A pair of top plates 36 are fixedly connected to the outer wall of the connector 24 relative to the position above the extrusion plate 23. The top of the vertical groove 29 is provided with an installation groove relative to the position above the rectangular groove 30. The installation groove is designed to avoid obstructing the insertion of the top plate 36 into the fixed frame 18, thereby affecting the normal insertion of the connector 24. The top of the L-shaped block 32 on the side away from each other is inclined. The top of the limiting groove 31 is also inclined. The expansion structure includes a lower stud 37, an upper polygonal groove 38 is provided on the rear side of one main roller 8 and one auxiliary roller 15, a lower polygonal groove 39 is provided on the rear side of the auxiliary roller 15, a polygonal block 40 is provided inside the lower polygonal groove 39, a countersunk hole 41 is provided on the rear side of the lower polygonal groove 39 and is connected to the upper polygonal groove 38, the lower stud 37 is threaded to the inside of the countersunk hole 41, and the side wall of the lower stud 37 is rotatably connected to the side wall of the polygonal block 40. When expanding the installation of the auxiliary conveyor frame 10, first install the second vacuum detector 1 next to the screening conveyor line 2 and install the auxiliary plate 4. At the same time, adjust the discharge position of the second vacuum detector 1. Then, fix the auxiliary conveyor frame 10 on the ground next to the main conveyor frame 7. Then, use an electric gun with a sleeve to insert into the upper polygonal groove 38 on the auxiliary roller 15, so that the sleeve is connected with the lower stud 37. This will drive the electric gun to rotate, thereby rotating the lower stud 37 to move forward spirally. At the same time, it pushes the polygonal block 40 to move out part of the lower polygonal groove 39 and insert it into the upper polygonal groove 38 on the main roller 8. This will drive the auxiliary roller 15 to rotate together when the main roller 8 rotates, thus completing the synchronous drive of the main conveyor belt 9 and the auxiliary conveyor belt 16. Then, insert the other end of the connector 24 into the rectangular slot 30 on the auxiliary conveyor frame 10 (note that the slot to be inserted is the rectangular slot 30 on the side closer to the main conveyor frame 7), and simultaneously press the top plate 36 against the pressing plate 23. Then, rotate the two upper studs 35 one by one to move them downwards, while pushing the adjusting plate 34 to slide downwards in the cavity. Since the L-shaped block 32 can only slide laterally in the cavity, during the downward movement of the adjusting plate 34, the inclined surface of the adjusting plate 34 will press against the inclined surface at the top of the L-shaped block 32, thereby pushing the L-shaped block 32 to slide to both sides and compressing the limiting spring 33, so that the side end of the L-shaped block 32 is inserted into the corresponding limiting slot 31. During this process, since the top of the limiting slot 31 is an inclined surface, Furthermore, the top of the L-shaped block 32 is also inclined. Therefore, when the L-shaped block 32 is inserted, the inclined surface of the L-shaped block 32 will squeeze the inclined surface of the limiting groove 31, thereby pressing the top plate 36 tightly against the top of the extrusion plate 23 (it should be noted that the extrusion plate 23 slides laterally at the bottom of the fixed frame 18, so when the connector 24 is installed on the extrusion plate 23, the two extrusion plates 23 will be connected together), thus completing the rapid expansion installation of the secondary conveyor frame 10. When it is necessary to continue to expand the installation channel, the above operation can be repeated. It should be noted that the subsequent selected secondary conveyor frames 10 are all one-third the length of the previous secondary conveyor frame 10. Only by maintaining the stepped form can the simultaneous sorting of multiple rows of betel nuts be achieved.

[0026] In summary, through the design of the above structure, and with the setting of the auxiliary conveyor frame 10 and the connector 24, when the equipment needs to be expanded in the later stage, the corresponding auxiliary conveyor frames 10 can be installed in a stepped and parallel manner to simultaneously sort multiple rows of areca nut packages. Moreover, the expanded conveyor line can be quickly connected to the conveyor line drive unit on the original equipment, and the expanded sorting system can be quickly connected to the original sorting drive. Therefore, it can be put into operation without the need to install new drive components, which greatly improves the investment cost of the equipment.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0028] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A vacuum packaging sealing inspection and screening device, comprising a vacuum inspection machine (1) and a screening conveyor line (2), characterized in that: The screening conveyor line (2) is located below the discharge port of the vacuum testing machine (1). There are two vacuum testing machines (1), and the discharge ports of the two vacuum testing machines (1) are staggered on the screening conveyor line (2). A pair of main plates (3) are fixedly connected to the top of the screening conveyor line (2). The discharge port of one of the vacuum testing machines (1) is located between the main plates (3). A secondary plate (4) is fixedly connected to the top of the screening conveyor line (2). The discharge port of the other vacuum testing machine (1) is located between the secondary plate (4) and the main plate (3). The screening conveyor line (2) is also equipped with a sorting mechanism for sorting betel nut packaging. 5) The screening conveyor line (2) is equipped with a visual inspection machine (6) for visual inspection of betel nut packaging. The discharge end of the screening conveyor line (2) is provided with a main conveyor frame (7) between the main board (3) and the discharge end of the main conveyor line (2). A pair of main rollers (8) are rotatably connected to the inner side of the main conveyor frame (7). A secondary conveyor frame (10) is provided on the rear side of the main conveyor frame (7) between the main board (3) and the secondary board (4). The length of the secondary conveyor frame (10) is two-thirds of the length of the main conveyor frame (7). The top of the main conveyor frame (7) and the secondary conveyor frame (10) and the position near the discharge end are both provided with top grooves (11). A sorting mechanism for sorting out unqualified products is also provided.

2. The vacuum packaging sealing detection and screening device according to claim 1, characterized in that: One of the main boards (3) located on the front side has an upper plate (12) fixedly connected to the top of the upper plate relative to the discharge position of the first vacuum testing machine (1), and the other main board (3) located on the rear side has a lower plate (13) fixedly connected to the top of the upper plate relative to the discharge position of the second vacuum testing machine (1).

3. The vacuum packaging sealing detection and screening device according to claim 1, characterized in that: The main rollers (8) are connected by a main conveyor belt (9). A drive motor (14) is fixedly connected to the front side of the main conveyor frame (7). The output end of the drive motor (14) passes through the inner side of the main conveyor frame (7) and is fixedly connected to the side wall of one of the main rollers (8). A pair of auxiliary rollers (15) are rotatably connected to the inner side of the auxiliary conveyor frame (10). An auxiliary conveyor belt (16) is connected between the auxiliary rollers (15). Both ends of the auxiliary rollers (15) are set through the outer wall of the auxiliary conveyor frame (10). The main roller (8) is set through the outer wall of the main conveyor frame (7) on the side close to the auxiliary conveyor frame (10). An expansion structure for connection is provided between the main roller (8) and the auxiliary roller (15).

4. The vacuum packaging sealing detection and screening device according to claim 1, characterized in that: The sorting mechanism includes an electric telescopic cylinder (17). A fixed frame (18) is fixedly connected to the top of both the main conveyor frame (7) and the auxiliary conveyor frame (10). A support frame (19) is fixedly connected to the top of the main conveyor frame (7). The electric telescopic cylinder (17) is fixedly connected to the top of the support frame (19). A transverse groove (20) is provided at the bottom of each fixed frame (18). A transverse plate (21) is slidably connected to the inner side of each transverse groove (20). An L-shaped plate (22) is fixedly connected to the bottom of each transverse plate (21), and the bottom of each L-shaped plate (22) is inserted into... Inside the front top groove (11), the bottom of the fixed frame (18) is slidably connected to the extrusion plate (23), and the extrusion plate (23) is connected to the connector (24). The output end of the electric telescopic cylinder (17) is fixedly connected to the side wall of the connector (24). The top of the L-shaped plate (22) is fixedly connected to the small electric push rod (25), and the output end of the small electric push rod (25) passes through the top of the L-shaped plate (22) and is inserted into the inside of the transverse groove (20). The small electric push rod (25) is electrically connected to the vision inspection machine (6) through the controller.

5. The vacuum packaging sealing detection and screening device according to claim 4, characterized in that: A pair of reset springs (26) are fixedly connected between the inner side of the transverse groove (20) and the side wall of the transverse plate (21). The extrusion plate (23) is inclined on the side near the transverse groove (20). The outer wall of the top groove (11) located at the rear of the main conveyor frame (7) and the auxiliary conveyor frame (10) is fixedly connected with a discharge frame (27). The discharge port of the auxiliary conveyor frame (10) is inclinedly fixedly connected with a side frame (28).

6. The vacuum packaging sealing detection and screening device according to claim 4, characterized in that: The top of each fixed frame (18) is provided with a vertical groove (29), and the top of each extrusion plate (23) is provided with a pair of rectangular grooves (30). Each rectangular groove (30) has a limiting groove (31) on both sides. The bottom end of the connector (24) is inserted into the inner side of two adjacent rectangular grooves (30) on the two extrusion plates (23). The connector (24) has a pair of cavities inside, and each cavity has an L-shaped block (32) for insertion into the limiting groove (31) that is slidably connected to both sides. 32) Several limiting springs (33) are fixedly connected between the inner side and the inner side of the cavity. The top of the L-shaped block (32) is inclined on one side. An adjusting plate (34) is longitudinally slidably connected to the inner side of the cavity. Both sides of the adjusting plate (34) are inclined. The inclined surface of the L-shaped block (32) is in contact with the inclined surface of the adjusting plate (34). A pair of upper studs (35) are threaded through the top of the connector (24). The bottom end of the upper studs (35) is rotatably connected to the top of the adjusting plate (34).

7. The vacuum packaging sealing detection and screening device according to claim 6, characterized in that: The outer wall of the connector (24) is fixedly connected to a pair of top plates (36) above the extrusion plate (23). The top of the vertical groove (29) is provided with an installation groove above the rectangular groove (30). The top of the L-shaped block (32) is inclined on the side away from each other. The top of the limiting groove (31) is inclined.

8. The vacuum packaging sealing detection and screening device according to claim 3, characterized in that: The expansion structure includes a lower stud (37), an upper polygonal groove (38) is provided on the rear side of one of the main rollers (8) and one of the auxiliary rollers (15), a lower polygonal groove (39) is provided on the rear side of the auxiliary roller (15), a polygonal block (40) is provided inside the lower polygonal groove (39), a countersunk hole (41) is provided on the rear side of the lower polygonal groove (39) and is connected to the upper polygonal groove (38), the lower stud (37) is threaded to the inside of the countersunk hole (41), and the side wall of the lower stud (37) is rotatably connected to the side wall of the polygonal block (40).

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