PE (polyethylene) plastic bottle air tightness detection device

Abstract

The utility model discloses a PE polyethylene plastic bottle air tightness detection device which comprises a workbench, a conveying structure, an anti-deviation structure, a sorting detection structure and an infrared sensor. Supporting legs are fixedly connected to the four corners of the bottom of the workbench, the conveying structure is arranged on one side of the top of the workbench, the deviation prevention structure is arranged on the top of the conveying structure, the sorting detection structure is arranged on the other side of the top of the workbench, and the infrared sensor is arranged on the other side of the conveying structure. Compared with the prior art, the PE plastic bottle air tightness detection device has the advantages that automatic feeding is achieved through the conveying belt, so that the air tightness of PE plastic bottles is continuously detected, the air tightness detection speed is increased, meanwhile, the function of automatically screening and collecting qualified and unqualified PE plastic bottles is achieved, and the production efficiency is improved. The step of manually picking out defective products is reduced, and the air tightness detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection, in particular to an air tightness detection device for PE polyethylene plastic bottles. Background Art

[0002] In order to save manufacturing costs, polyethylene plastic bottle manufacturers will recycle used polyethylene plastic bottles from customers (such as hospitals, etc.). After recycling, the polyethylene plastic bottles will be processed in sequence through air tightness testing, cleaning and drying processes to obtain products that can continue to be filled with liquid medicine, thereby saving the production cost of polyethylene plastic bottles. Among them, the air tightness testing process is to detect whether there is any leakage in the bottle body of the polyethylene plastic bottle.

[0003] Patent document No. CN218847557U discloses a device for precisely detecting the airtightness of polyethylene plastic bottles. The device comprises a workbench and a gantry welded to the top surface of the workbench. An exhaust pipe is provided below the workbench, and multiple branch pipes are provided along the length of the exhaust pipe. A vacuum plate is also fixed to the workbench surface, and the vacuum plate is provided with multiple straight holes corresponding to the branch pipes. The straight holes are provided through the upper and lower surfaces of the vacuum plate, and the straight holes are provided outside the extended ends of the branch pipes. Multiple vacuum holes are provided on the top surface of the vacuum plate along the circumference of the straight holes. Each vacuum hole is connected to the inner cavity of the vacuum plate, and the vacuum plate is connected to a vacuum pump. The beneficial effects of this utility model are: compact structure, greatly reduced workload for workers, and greatly improved detection accuracy. However, the existing technology still has defects:

[0004] In the actual inspection process of the device of the prior art, it is necessary to manually insert the bottle mouth of the polyethylene plastic bottle from top to bottom into the straight hole of the vacuum plate in sequence, and the inspection results are also required to be manually observed during the inspection. After the inspection is completed, unqualified polyethylene plastic bottles are still required to be manually sorted out and stored separately. The degree of automation is low, the interruption time is long, and the operation process is cumbersome. The defective products detected cannot be automatically picked out, and the manual picking steps are increased, which reduces the efficiency of the inspection work. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned defects and provide an air tightness detection device for PE polyethylene plastic bottles.

[0006] In order to solve the above technical problems, the technical solution provided by the present invention is: a PE polyethylene plastic bottle airtightness detection device, comprising:

[0007] A workbench, wherein the four corners of the bottom of the workbench are fixedly connected to supporting legs;

[0008] A conveying structure is provided on one side of the top of the workbench, and includes a support plate fixedly connected to the front and rear ends of one side of the top of the workbench, with rotating rollers rotatably connected on both sides of the opposite sides of the support plate, and a conveyor belt is sleeved on the outer side of the rotating roller, and a motor 1 is fixedly installed on the front end of one side of the support plate, and the output end of the motor 1 is fixedly connected to the rotating roller;

[0009] An anti-deviation structure, the anti-deviation structure being arranged on the top of the conveying structure;

[0010] A sorting detection structure is provided on the other side of the top of the workbench, and the sorting detection structure includes a second motor fixedly mounted on the bottom right side of the workbench, the output end of the second motor is fixedly connected to a rotating shaft, the top of the rotating shaft passes through the workbench and the end is fixedly connected to a mounting plate, a plurality of cylinders are fixedly mounted on the bottom of the mounting plate in a circumferential distribution, a pressure cover is fixedly connected to the bottom of the output end of the cylinder, a sealing ring is provided on the inner side of the pressure cover, a plurality of air pumps are fixedly mounted on the top of the mounting plate in a circumferential distribution, the air pumps and the pressure covers correspond one to one, one end of the air pump is connected to an air pipe, the other end of the air pipe is connected to the top of the pressure cover, the air pipe is fixedly connected to a connecting pipe on the side close to the air pump, and a solenoid valve is provided on the connecting pipe;

[0011] An infrared sensor is arranged on the other side of the transmission structure.

[0012] Furthermore, the anti-deflection structure includes:

[0013] A bidirectional screw rod is rotatably connected between the top right side of the support plate;

[0014] A turntable, the turntable being fixedly connected to the front end portion of the bidirectional screw extending to the outside of the support plate;

[0015] Limiting plates, the two limiting plates being threadedly connected to the threaded portions on the front and rear sides of the bidirectional screw respectively;

[0016] A limiting rod is fixedly connected to the left side of the side opposite to the limiting plate, and the other end of the limiting rod is inserted into the supporting plate.

[0017] Furthermore, a plurality of bottles are placed on the top of the conveyor belt, and a bottle mouth is provided on the top of the bottle body.

[0018] Furthermore, the infrared sensor is fixedly installed on the top right side of the support plate.

[0019] Furthermore, a waste collection box is provided at the front end of the right side of the workbench, and a qualified product collection box is provided on the right side of the workbench.

[0020] The advantages of this utility model compared with the prior art are:

[0021] The utility model is provided with a conveying structure and a sorting detection structure. During the detection process, the conveyor belt will transport the PE polyethylene plastic bottle to the bottom of the gland. The infrared sensor senses the PE polyethylene plastic bottle and feeds back a signal to the main controller. Then the main controller controls the cylinder at the corresponding position to drive the gland to move down so that the gland is sleeved on the bottle mouth. The air in the bottle body is evacuated by the air pump so that the bottle body is adsorbed on the gland. The air pump evacuates the bottle body to detect air tightness. After that, the motor 2 is started to drive the rotating shaft and the mounting plate to rotate. When the gland moves to the top of the waste collection box, the air pump stops pumping air, and the air tightness is not met. PE polyethylene plastic bottles that meet the air tightness requirements will fall into the waste collection box. When the pressure cap moves to the top of the qualified product collection box, the main controller controls the corresponding solenoid valve to open, allowing outside air to enter the bottle through the connecting pipe and the air pipe. PE polyethylene plastic bottles that meet the air tightness requirements will fall into the qualified product collection box for collection, thereby achieving a continuous flow of PE polyethylene plastic bottles being tested for air tightness, improving the speed of air tightness testing, and realizing the function of automatic screening and collection of qualified and unqualified PE polyethylene plastic bottles, reducing the steps of manually picking out defective products and improving the efficiency of air tightness testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This utility model is a PE polyethylene plastic bottle air tightness detection device Figure 1 .

[0023] Figure 2 This utility model is a PE polyethylene plastic bottle air tightness detection device Figure 2 .

[0024] Figure 3 The utility model is a front sectional view of a PE polyethylene plastic bottle air tightness detection device.

[0025] Figure 4 The utility model is a top sectional view of a PE polyethylene plastic bottle air tightness detection device.

[0026] Figure 5 This utility model is a PE polyethylene plastic bottle airtightness detection device Figure 3 Enlarged structural diagram at point A in the middle.

[0027] Markings in the figure: 1. Workbench; 2. Conveying structure; 21. Support plate; 22. Conveyor belt; 23. Motor 1; 3. Anti-bias structure; 31. Bidirectional screw; 32. Turntable; 33. Limit plate; 34. Limit rod; 4. Bottle body; 41. Bottle mouth; 5. Sorting and detection structure; 51. Motor 2; 52. Rotating shaft; 53. Mounting plate; 54. Cylinder; 55. Pressure cap; 56. Air pump; 57. Air pipe; 58. Connecting pipe; 59. Solenoid valve; 6. Infrared sensor; 7. Waste collection box; 8. Qualified product collection box. DETAILED DESCRIPTION

[0028] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0029] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 5 As shown, this embodiment proposes a PE polyethylene plastic bottle air tightness detection device, including a workbench 1, with legs fixedly connected to the four corners of the bottom of the workbench 1, a waste collection box 7 is provided at the front end of the right side of the workbench 1, and a qualified product collection box 8 is provided on the right side of the workbench 1.

[0031] A conveying structure 2 is provided on one side of the top of the workbench 1. The conveying structure 2 includes a support plate 21 fixedly connected to the front and rear ends of one side of the top of the workbench 1. Rotating rollers are rotatably connected on both sides of the opposite sides of the support plate 21. A conveyor belt 22 is provided on the outer side of the rotating roller. A motor 23 is fixedly installed on the front end of one side of the support plate 21. The output end of the motor 23 is fixedly connected to the rotating roller. The motor 23 is used to drive the rotating roller to rotate, and then the conveyor belt 22 is driven to rotate, so that a continuous stream of PE polyethylene plastic bottles can be tested for air tightness. During the test, there is no need to manually insert the bottle mouth of the polyethylene plastic bottle from top to bottom into the straight hole of the vacuum plate for loading, which improves the speed of air tightness detection.

[0032] The top of the conveying structure 2 is provided with an anti-deviation structure 3, which includes a bidirectional screw rod 31 rotatably connected to the right side of the top of the support plate 21, and the bidirectional screw rod 31 extends to the front end portion outside the support plate 21 and is fixedly connected to a turntable 32, wherein a latch structure with a locking function is provided on the turntable 32, and the threaded parts on the front and rear sides of the bidirectional screw rod 31 are threadedly connected to the limit plate 33, and the left side of the opposite side of the limit plate 33 is fixedly connected to the limit rod 34, and the other end of the limit rod 34 is inserted into the support plate 21. Rotating the turntable 32 drives the bidirectional screw rod 31 to rotate, which can cause the limit plate 33 to slide along the extension direction of the limit rod 34, so that the two limit plates 33 can contact PE polyethylene plastic bottles with different outer diameters, thereby ensuring the stability of the PE polyethylene plastic bottles during the transportation process.

[0033] A plurality of bottles 4 are placed on the top of the conveyor belt 22, each of which has a bottle mouth 41 on its top. An infrared sensor 6 is fixedly mounted on the right side of the top of the support plate 21. The infrared sensor 6 senses the position of the PE polyethylene plastic bottle and feeds back a signal to the main controller.

[0034] A sorting detection structure 5 is provided on the other side of the top of the workbench 1. The sorting detection structure 5 includes a second motor 51 fixedly mounted on the bottom right side of the workbench 1. The output end of the second motor 51 is fixedly connected to a rotating shaft 52. The top of the rotating shaft 52 passes through the workbench 1 and the end is fixedly connected to a mounting plate 53. A plurality of cylinders 54 are fixedly mounted on the bottom of the mounting plate 53 in a circumferential distribution. A pressure cover 55 is fixedly connected to the bottom of the output end of the cylinder 54. A sealing ring is provided on the inside of the pressure cover 55. A plurality of air pumps 56 are fixedly mounted on the top of the mounting plate 53 in a circumferential distribution. The air pumps 56 correspond to the pressure covers 55 one by one. One end of the air pump 56 is connected to an air pipe 57. The other end of the air pipe 57 is connected to the top of the pressure cover 55. The air pipe 57 is close to the air pump 5 One side of 6 is fixedly connected with a connecting pipe 58, and a solenoid valve 59 is provided on the connecting pipe 58. Among them, when the bottle body 4 moves to the bottom of the pressure cap 55 on the leftmost side of the mounting plate 53, the infrared sensor 6 will feedback a signal, and the cylinder 54 will be used to drive the pressure cap 55 to move down, so that the pressure cap 55 is sleeved on the bottle mouth 41, and the air pump 56 will evacuate the air in the bottle body 4 so that the bottle body 4 is adsorbed on the pressure cap 55. The air pump 56 evacuates the bottle body 4 to test the air tightness. When the air pump 56 stops pumping air, the PE polyethylene plastic bottle that does not meet the air tightness will fall. Then the solenoid valve 59 is opened to allow the outside air to enter the bottle body 4 through the connecting pipe 58 and the air pipe 57, and the PE polyethylene plastic bottle that meets the air tightness will fall.

[0035] During the specific implementation of the present invention, when in use, first according to the outer diameter of the PE polyethylene plastic bottle, the rotating turntable 32 drives the bidirectional screw 31 to rotate, which can cause the limit plate 33 to slide along the extension direction of the limit rod 34, so that the two limit plates 33 can resist PE polyethylene plastic bottles with different outer diameters, thereby ensuring the stability of the PE polyethylene plastic bottle during the transportation process, and then the PE polyethylene plastic bottle is placed on the conveyor belt 22, and then the motor 23 is started to drive the conveyor belt 22 to rotate, and the conveyor belt 21 transports the PE polyethylene plastic bottle to the bottom of the pressure cap 55 on the leftmost side of the installation plate 53, and the infrared sensor 6 senses the PE polyethylene plastic bottle and feeds back a signal to the main controller, and then the main controller controls the cylinder 54 at the corresponding position to drive the pressure cap 55 to move downward, so that the pressure cap 55 is sleeved on the bottle mouth 41, and the air pump 56 evacuates the air from the bottle body 4, so that the bottle body 4 is adsorbed on the pressure cap 55, and the air pump 56 presses the bottle body 4 is used to vacuum the bottle body 4 to detect air tightness. By controlling the motor 2 51 to start intermittently, the rotating shaft 52 and the mounting plate 53 are driven to rotate intermittently. When the pressure cap 55 moves to the top of the waste collection box 7, the air pump 56 stops pumping air. If the air tightness of the PE polyethylene plastic bottle is unqualified, it will fall into the waste collection box 7. Thereafter, when the pressure cap 55 moves to the top of the qualified product collection box 8, the main controller controls the corresponding solenoid valve 59 to open, so that the outside air enters the bottle body 4 through the connecting pipe 58 and the air pipe 57. The PE polyethylene plastic bottles with qualified air tightness will fall into the qualified product collection box 8 for collection, thereby achieving a continuous flow of PE polyethylene plastic bottles to be tested for air tightness, improving the air tightness detection speed, and realizing the function of automatically screening and collecting qualified and unqualified PE polyethylene plastic bottles, reducing the steps of manually picking out defective products, improving the efficiency of air tightness detection, and thus improving the practicality of the device.

[0036] The electrical components appearing in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that controls a computer, etc. The specific implementation method of this disclosure omits the detailed description of known functions and known components. To ensure the compatibility of the equipment, the operating methods used are consistent with the parameters of marketed equipment.

[0037] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PE polyethylene plastic bottle airtightness detection device, characterized by: include: A workbench (1), wherein the four corners of the bottom of the workbench (1) are fixedly connected with supporting legs; A conveying structure (2), the conveying structure (2) is arranged on one side of the top of the workbench (1), the conveying structure (2) includes a support plate (21) fixedly connected to the front and rear ends of one side of the top of the workbench (1), both sides of the opposite side of the support plate (21) are rotatably connected to rotating rollers, a conveyor belt (22) is sleeved on the outer side of the rotating roller, a motor (23) is fixedly installed on the front end of one side of the support plate (21), and the output end of the motor (23) is fixedly connected to the rotating roller; An anti-deflection structure (3), wherein the anti-deflection structure (3) is arranged on the top of the conveying structure (2); A sorting detection structure (5) is provided on the other side of the top of the workbench (1). The sorting detection structure (5) comprises a second motor (51) fixedly mounted on the bottom right side of the workbench (1). The output end of the second motor (51) is fixedly connected to a rotating shaft (52). The top of the rotating shaft (52) passes through the workbench (1) and the end thereof is fixedly connected to a mounting plate (53). The bottom of the mounting plate (53) is fixedly mounted with a plurality of cylinders (54) distributed in a circumferential manner. The bottom of the output end of the cylinder (54) is fixedly connected to a rotating shaft (52). The top of the mounting plate (53) is fixedly connected to a gland (55), a sealing ring is provided on the inner side of the gland (55), a plurality of air pumps (56) are fixedly installed in a circumferential distribution on the top of the mounting plate (53), the air pumps (56) and the gland (55) correspond one to one, one end of the air pump (56) is connected to an air pipe (57), the other end of the air pipe (57) is connected to the top of the gland (55), the air pipe (57) is fixedly connected to a connecting pipe (58) on the side close to the air pump (56), and a solenoid valve (59) is provided on the connecting pipe (58); An infrared sensor (6), wherein the infrared sensor (6) is arranged on the other side of the conveying structure (2).

2. The air tightness detection device for PE polyethylene plastic bottles according to claim 1, characterized in that: The anti-deflection structure (3) comprises: a bidirectional screw rod (31), the bidirectional screw rod (31) being rotatably connected between the top right side of the support plate (21); A turntable (32), the turntable (32) being fixedly connected to the front end portion of the bidirectional screw rod (31) extending to the outside of the support plate (21); Limiting plates (33), wherein the two limiting plates (33) are respectively threadedly connected to the threaded portions on the front and rear sides of the bidirectional screw rod (31); A limiting rod (34) is fixedly connected to the left side of the limiting plate (33) on the opposite side, and the other end of the limiting rod (34) is inserted into the supporting plate (21).

3. The air tightness detection device for PE polyethylene plastic bottles according to claim 1, characterized in that: A plurality of bottles (4) are placed on the top of the conveyor belt (22), and a bottle mouth (41) is provided on the top of the bottle body (4).

4. The air tightness detection device for PE polyethylene plastic bottles according to claim 1, characterized in that: The infrared sensor (6) is fixedly mounted on the top right side of the support plate (21).

5. The air tightness detection device for PE polyethylene plastic bottles according to claim 1, characterized in that: A waste collection box (7) is provided at the front end of the right side of the workbench (1), and a qualified product collection box (8) is provided on the right side of the workbench (1).

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