Rapid detection equipment for chemical plastic bucket sealing performance

Abstract

The utility model relates to chemical barrel detection technical field especially for the quick detection equipment for chemical plastics barrel leakproofness, including frame, be provided with sealed detection mechanism on the frame and be used for chemical plastics barrel leakproofness detection, sealed detection mechanism includes: conveying unit, including the conveyer that sets up in the front of frame, drive assembly, set up on the frame and be used for carrying out the butt joint action, execution component, including the axle seat that sets up on drive assembly, the lower end one side of axle seat is pivoted to have connecting rod, and the lower end pivoted to have movable frame of connecting rod, and the movable frame outer wall is fixed with the cylinder seat, and the cylinder seat inside longitudinal through -wall installation has the inflation head, and the lower end pivoted to have L type support of axle seat lower end and movable frame, and L type support lower end pivoted to have, and the success rate of detection butt joint, the versatility of equipment and the automation level of production line have been improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of chemical drum testing technology, specifically to a rapid testing device for the sealing performance of chemical plastic drums. Background Technology

[0002] Chemical plastic drums are an important type of packaging container widely used in the chemical industry, mainly for storing and transporting various liquid chemicals; their sealing performance is directly related to the safety, stability, and environmental protection requirements of chemicals during storage, transportation, and use. According to CN118424615B, a chemical drum / tank sealing performance testing device is disclosed. This technology discloses a technical solution including: "a base plate, on which a conveying module is mounted via a mounting bracket at the upper end; and two limiting units, symmetrically distributed front and back, connected to the upper end of the conveying module and used to guide the movement of the chemical drum / tank." This device offers technical advantages such as: "The testing components can support the walls of the chemical plastic drum / tank during the inspection process, preventing deformation and damage, reducing testing costs; and allowing for the application of greater pressure during testing, further enhancing the sealing of the filling hole and improving the accuracy of the test results." In existing technologies, due to product design specifications and mold structure limitations, the injection port of chemical plastic drums is generally not located at the center of the drum top, but rather offset to one side of the drum's central axis. Since the eccentricity and offset angle of the injection port vary depending on the drum type and its capacity, when these drums of different specifications are mixed and transported on an assembly line through automated testing equipment with a unified path, the detection head, running on a fixed trajectory, cannot accommodate the discrete distribution characteristics of the actual injection port position. This results in frequent spatial misalignment between the detection head and the drum opening during batch testing, making reliable sealing tests impossible. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a rapid testing device for the sealing performance of chemical plastic drums. It achieves multi-degree-of-freedom adaptive and precise alignment of the testing mechanism, and can actively compensate for position and angle deviations of the injection port for different drum types. This significantly improves the success rate of testing and docking, the versatility of the equipment, and the automation level of the production line.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a rapid testing device for the sealing performance of chemical plastic drums, comprising a frame, wherein a sealing testing mechanism is mounted on the frame and used for testing the sealing performance of chemical plastic drums, the sealing testing mechanism comprising: Conveying assembly, including a conveyor positioned in front of the frame; The drive assembly, mounted on the rack, is used to perform the docking action; The actuator includes a bearing seat mounted on the drive assembly. A connecting rod is pivotally connected to one side of the lower end of the bearing seat. A movable frame is pivotally connected to the lower end of the connecting rod. A cylindrical seat is fixed to the outer wall of the movable frame. An inflation head is longitudinally installed inside the cylindrical seat. An L-shaped support rod is pivotally connected to the lower end of the bearing seat, and the lower end of the L-shaped support rod is pivotally connected to the movable frame. An oblong hole is opened inside the L-shaped support rod. A fourth cylinder is mounted on the upper end of the bearing seat. A shaft bracket is fixed to the output end below the fourth cylinder. A cam is rotatably mounted on one side of the lower end of the shaft bracket, and the cam is located inside the oblong hole.

[0005] Preferably, the drive assembly further includes a mounting plate fixed to the upper right side of the frame, a mounting bracket is slidably mounted longitudinally through the mounting plate, a cylinder is rotatably mounted at the lower end of the mounting bracket and a bearing is fixed at the lower end of the cylinder, a servo motor is mounted at the upper end of the mounting bracket and is used to drive the cylinder to rotate, and a third cylinder is mounted at the upper end of the mounting plate and is used to drive the mounting bracket to lift.

[0006] Preferably, the drive assembly further includes a vertical pole fixed to the upper left side of the frame, with an industrial camera mounted on the lower end of the vertical pole.

[0007] Preferably, the conveying assembly further includes a first cylinder installed at both ends of the conveyor, and a clamp is fixed to the output end of the first cylinder.

[0008] Preferably, the conveying assembly further includes a second cylinder installed at the right end of the frame, a pusher fixed at the front output end of the second cylinder, and a collection trough provided on the right side of the front of the conveyor.

[0009] Preferably, the execution component further includes an annular plate fixed to the outer wall of the lower end of the inflation head, and a sealing gasket is installed at the bottom of the annular plate.

[0010] Beneficial effects This invention provides a rapid testing device for the sealing performance of chemical plastic drums. Compared with existing technologies, it has the following advantages: 1. After the conveyor transports and positions the chemical plastic drums to the inspection station, the drive assembly provides overall lifting and rotation power. The output end of the fourth cylinder drives the shaft frame and the cam mounted on it to move synchronously. The cam then acts on the inner wall of the waist-shaped hole on the L-shaped support rod, forcing it to swing. Since the lower end of the L-shaped support rod is pivotally connected to the movable frame, its swinging motion is converted into a lateral traction or pushing force on the movable frame through the connecting rod pivotally connected to it. This forces the movable frame, which has the cylinder seat and inflation head fixed, to produce a controllable radial displacement relative to the shaft seat. This allows the inflation head to compensate for radial position and actively adapt to the actual position deviation of the injection port of different drum types, ensuring that the lower end of the inflation head can be perfectly aligned with various injection ports, thus improving the versatility of the equipment.

[0011] 2. The mounting bracket is driven to move vertically up and down by the output end of the third cylinder, thereby driving the lower cylinder and the execution component to move up and down synchronously, so as to achieve overall positioning, docking and disengagement of the cylinder opening height position; at the same time, the output end of the servo motor drives the cylinder and the execution component to rotate, adjusting the circumferential angle of the inflation head, and rotating the inflation head to the initial position that matches the orientation of the cylinder injection port before testing. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the drive component in this utility model; Figure 3 This is a partial structural diagram of the drive component in this utility model; Figure 4 This is a schematic diagram of the structure of the execution component in this utility model.

[0013] In the diagram: 1. Frame; 2. Sealing detection mechanism; 21. Conveying assembly; 211. Conveyor; 212. First cylinder; 213. Chuck; 214. Second cylinder; 215. Pusher; 216. Collection trough; 22. Drive assembly; 221. Mounting plate; 222. Mounting bracket; 223. Cylinder; 224. Servo motor; 225. Third cylinder; 226. Upright pole; 227. Industrial camera; 23. Actuation assembly; 231. Shaft seat; 232. Connecting rod; 233. Movable frame; 234. Cylinder seat; 235. Inflator head; 236. L-shaped support rod; 237. Waist-shaped hole; 238. Fourth cylinder; 239. Shaft bracket; 2310. Cam; 2311. Ring plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0015] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a rapid testing device for the sealing performance of chemical plastic drums, including a frame 1, on which a sealing testing mechanism 2 is installed for testing the sealing performance of chemical plastic drums. The sealing testing mechanism 2 includes: The conveying assembly 21 includes a conveyor 211 disposed in front of the frame 1; Drive component 22 is mounted on frame 1 and is used to perform docking actions; The execution component 23 includes a bearing seat 231 mounted on the drive component 22. A connecting rod 232 is pivotally connected to one side of the lower end of the bearing seat 231. A movable frame 233 is pivotally connected to the lower end of the connecting rod 232. A cylindrical seat 234 is fixed to the outer wall of the movable frame 233. An inflation head 235 is longitudinally installed inside the cylindrical seat 234. An L-shaped support rod 236 is pivotally connected to the lower end of the bearing seat 231, and the lower end of the L-shaped support rod 236 is pivotally connected to the movable frame 233. An oblong hole 237 is opened inside the L-shaped support rod 236. A fourth cylinder 238 is mounted on the upper end of the bearing seat 231. A shaft bracket 239 is fixed to the output end below the fourth cylinder 238. A cam 2310 is rotatably mounted on one side of the lower end of the shaft bracket 239, and the cam 2310 is located inside the oblong hole 237.

[0016] In this embodiment, after the conveyor 211 transports and positions the chemical plastic drum to the inspection station, the drive assembly 22 provides overall lifting and rotation power. The output end of the fourth cylinder 238 drives the shaft frame 239 and the cam 2310 rotatably mounted on it to move synchronously. The cam 2310 then acts on the inner wall of the waist-shaped hole 237 opened on the L-shaped support rod 236, forcing it to swing. Since the lower end of the L-shaped support rod 236 is pivotally connected to the movable frame 233, its swinging motion is converted into a lateral traction or pushing force on the movable frame 233 through the connecting rod 232 pivotally connected to it. This forces the movable frame 233, which is fixed with the cylinder seat 234 and the inflation head 235, to produce a controllable radial displacement relative to the shaft seat 231. This allows the inflation head 235 to compensate for radial position and actively adapt to the actual position deviation of different drum-shaped injection ports, ensuring that the lower end of the inflation head 235 can be perfectly aligned with various injection ports, thus improving the versatility of the equipment.

[0017] Specifically, the drive assembly 22 also includes a mounting plate 221 fixed to the upper right side of the frame 1. A mounting bracket 222 is slidably mounted longitudinally through the mounting plate 221. A cylinder 223 is rotatably mounted on the lower end of the mounting bracket 222, and a bearing 231 is fixed to the lower end of the cylinder 223. A servo motor 224 is mounted on the upper end of the mounting bracket 222 and is used to drive the cylinder 223 to rotate. A third cylinder 225 is mounted on the upper end of the mounting plate 221 and is used to drive the mounting bracket 222 to lift.

[0018] In this embodiment, the output end of the third cylinder 225 drives the mounting bracket 222 to move vertically up and down, thereby driving the lower cylinder 223 and the execution component 23 to move up and down synchronously, so as to achieve overall positioning, docking and disengagement of the height position of the barrel opening; at the same time, the output end of the servo motor 224 drives the cylinder 223 and the execution component 23 to rotate, adjusting the circumferential angle of the inflation head 235, and rotating the inflation head 235 to the initial position that matches the orientation of the barrel injection port before detection.

[0019] Specifically, the drive assembly 22 also includes a pole 226 fixed to the upper left side of the frame 1, and an industrial camera 227 is installed at the lower end of the pole 226.

[0020] In this embodiment, after the barrel arrives at the work station, the industrial camera 227 acquires images of the top area of ​​the barrel, and uses an image processing algorithm to identify and calculate the actual center position coordinates of the injection port and its offset from the standard position; this serves as the accurate basis for motion compensation between the drive component 22 and the execution component 23, thereby enabling the pre-acquisition of the real position parameters of the injection port of barrels of different specifications.

[0021] Specifically, the conveying assembly 21 also includes a first cylinder 212 installed at both ends of the conveyor 211, and a clamp 213 is fixed to the output end of the first cylinder 212.

[0022] In this embodiment, when the plastic bucket is delivered to the inspection station by the conveyor 211, the two first cylinders 212 arranged in the front and rear directions synchronously drive their respective clamps 213 to extend towards each other, applying a balanced clamping force to the bucket body from the front and rear sides, thereby stably positioning the bucket body in the central area of ​​the inspection station.

[0023] Specifically, the conveying assembly 21 also includes a second cylinder 214 installed at the right end of the frame 1. A pusher 215 is fixed at the front output end of the second cylinder 214, and a collection trough 216 is provided on the right side of the front of the conveyor 211.

[0024] In this embodiment, after the inflation head 235 forms a stable seal with the plastic bucket injection port, the external air system injects clean gas at a certain pressure into the bucket through the inflation head 235. After reaching the preset pressure, the air inlet valve is closed, forming a closed test chamber inside the bucket. During the set pressure holding time, a high-precision pressure sensor continuously monitors the pressure change inside the sealed chamber. If there is a leak in the bucket, such as cracks in the bucket wall or an incomplete seal at the injection port, the gas inside the chamber will escape through the leak point, causing the pressure to gradually decrease over time. Conversely, if the bucket is completely sealed, the pressure will remain basically stable. If it is determined to be a defective product, the second cylinder 214 is immediately activated, driving the pusher head 215 at its front end to extend horizontally and exert a certain thrust on one side of the defective bucket, pushing it laterally away from the normal conveying path of the conveyor 211, causing it to fall into the preset collection trough 216 on the right. Qualified products are directly conveyed to the right by the conveyor 211 to the next process.

[0025] Specifically, the execution component 23 also includes an annular plate 2311 fixed to the outer wall of the lower end of the inflation head 235, and a sealing gasket is installed at the bottom of the annular plate 2311.

[0026] In this embodiment, after the lower end of the inflation head 235 is precisely inserted into the injection port of the barrel, the ring plate 2311 at its lower end descends and fits against the annular end face of the injection port at the upper end of the barrel. By applying a continuous axial clamping force, the elastic sealing gasket installed at the bottom of the ring plate 2311 undergoes uniform compression deformation, thereby forming a reliable and sealed annular contact interface between the outside of the inflation head 235 and the injection port of the barrel, effectively preventing the detection gas from leaking at the mating surface, and establishing a temporary and stable sealed test chamber for subsequent sealing tests.

[0027] The working principle and usage process of this utility model are as follows: First, the chemical plastic drum is conveyed to the inspection station by the conveyor 211. When the drum arrives at the station, the first cylinders 212 arranged at the front and rear ends of the conveyor 211 synchronously drive their respective clamps 213 to extend towards each other, applying a balanced clamping force to the drum from both the front and rear sides, thereby stably positioning the drum in the center area of ​​the inspection station. At the same time, the industrial camera 227 fixed at the lower end of the left upright 226 on the upper end of the frame 1 acquires images of the top area of ​​the drum. The actual center position coordinates of the injection port and its offset from the standard position are identified and calculated by the image processing algorithm, which serves as the accurate basis for subsequent motion compensation. Next, the drive assembly 22 starts to work: the output end of the third cylinder 225 drives the mounting bracket 222 to move vertically up and down, thereby driving the lower cylinder 223 and the execution assembly 23 to descend synchronously, so as to achieve overall positioning of the height of the barrel opening; at the same time, the output end of the servo motor 224 drives the cylinder 223 and the execution assembly 23 to rotate, adjusting the circumferential angle of the inflation head 235, and rotating the inflation head 235 to the initial position that matches the orientation of the barrel injection port before detection; Subsequently, the actuator 23 performs a precision docking action: the output end of the fourth cylinder 238 drives the shaft frame 239 and the cam 2310 rotatably mounted on it to move synchronously. The cam 2310 then acts on the inner wall of the waist-shaped hole 237 opened on the L-shaped support rod 236, forcing it to swing. Since the lower end of the L-shaped support rod 236 is pivotally connected to the movable frame 233, its swinging motion is converted into a lateral traction or pushing force on the movable frame 233 through the connecting rod 232 pivotally connected to it. This forces the movable frame 233, which is fixed with the cylinder seat 234 and the inflation head 235, to produce a controllable radial displacement, so that the inflation head 235 can actively adapt to the actual position deviation of different barrel-shaped injection ports and achieve complete centering insertion. When the lower end of the inflation head 235 is precisely inserted into the injection port of the barrel, the ring plate 2311 at its lower end descends and fits against the annular end face of the injection port at the upper end of the barrel. By applying a continuous axial clamping force, the elastic sealing gasket installed at the bottom of the ring plate 2311 undergoes uniform compression deformation, thereby forming a reliable and sealed annular contact interface between the outside of the inflation head 235 and the injection port of the barrel. The sealing test then begins: the external air system injects clean gas at a certain pressure into the tank through the inflation head 235. Once the preset pressure is reached, the air inlet valve is closed, forming a sealed test chamber inside the tank. During the set pressure holding time, a high-precision pressure sensor continuously monitors the pressure changes within this sealed chamber. If there is a leak in the tank, the gas inside the chamber will escape through the leak point, causing the pressure to gradually decrease. Conversely, if the tank is completely sealed, the pressure will remain basically stable. After the inspection is completed, the drive component 22 drives the execution component 23 to rise and reset, disengaging from the barrel opening. Finally, the control system makes a judgment based on the inspection results: if the product is determined to be defective, the second cylinder 214 installed on the right end of the frame 1 is activated, driving the pusher 215 at its front end to extend horizontally and exert a certain thrust on one side of the defective barrel, pushing it laterally away from the normal conveying path of the conveyor 211, causing it to fall into the preset collection trough 216 on the right; qualified products continue to be conveyed to the right through the conveyor 211 to the next process, completing the entire automated inspection process.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid testing device for the sealing performance of chemical plastic drums, comprising a frame (1), characterized in that: The frame (1) is equipped with a sealing detection mechanism (2) for testing the sealing performance of chemical plastic drums. The sealing detection mechanism (2) includes: The conveying assembly (21) includes a conveyor (211) disposed in front of the frame (1). A drive assembly (22) is mounted on the frame (1) and is used to perform docking actions; The execution component (23) includes a bearing seat (231) mounted on the drive component (22). A connecting rod (232) is pivotally connected to one side of the lower end of the bearing seat (231). A movable frame (233) is pivotally connected to the lower end of the connecting rod (232). A cylinder seat (234) is fixed to the outer wall of the movable frame (233). An air inflator (235) is longitudinally installed inside the cylinder seat (234). An L-shaped support rod (236) is pivotally connected to the lower end of the bearing seat (231), and the lower end of the L-shaped support rod (236) is pivotally connected to the movable frame (233). A waist-shaped hole (237) is opened inside the L-shaped support rod (236). A fourth cylinder (238) is installed on the upper end of the bearing seat (231). A shaft frame (239) is fixed to the output end below the fourth cylinder (238). A cam (2310) is rotatably installed on one side of the lower end of the shaft frame (239), and the cam (2310) is located inside the waist-shaped hole (237).

2. The rapid testing device for the sealing performance of chemical plastic drums according to claim 1, characterized in that: The drive assembly (22) also includes a mounting plate (221) fixed on the upper right side of the frame (1). A mounting bracket (222) is slidably mounted through the mounting plate (221) longitudinally. A cylinder (223) is rotatably mounted on the lower end of the mounting bracket (222), and a bearing seat (231) is fixed on the lower end of the cylinder (223). A servo motor (224) is mounted on the upper end of the mounting bracket (222) and is used to drive the cylinder (223) to rotate. A third cylinder (225) is mounted on the upper end of the mounting plate (221) and is used to drive the mounting bracket (222) to lift.

3. The rapid testing device for the sealing performance of chemical plastic drums according to claim 1, characterized in that: The drive assembly (22) also includes a pole (226) fixed to the upper left side of the frame (1), and an industrial camera (227) is installed at the lower end of the pole (226).

4. The rapid testing device for the sealing performance of chemical plastic drums according to claim 1, characterized in that: The conveying assembly (21) also includes a first cylinder (212) installed at both ends of the conveyor (211), and a clamp (213) is fixed at the output end of the first cylinder (212).

5. The rapid testing device for the sealing performance of chemical plastic drums according to claim 1, characterized in that: The conveying assembly (21) also includes a second cylinder (214) installed on the right end of the frame (1), a pusher (215) is fixed at the front output end of the second cylinder (214), and a collection trough (216) is provided on the right side of the front of the conveyor (211).

6. The rapid testing device for the sealing performance of chemical plastic drums according to claim 1, characterized in that: The execution component (23) also includes a ring plate (2311) fixed to the outer wall of the lower end of the inflation head (235), and a sealing gasket is installed at the bottom of the ring plate (2311).

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