Electric detection cap closing device for airtightness of integrated plastic bottle cap

Abstract

The invention provides an integrated plastic bottle cap airtightness electric detection cap closing device, which comprises a detection table fixedly mounted on a mounting rack, a plurality of rows of detection seats are fixedly mounted on the detection table, insertion seats for insertion of lower caps of integrated bottle caps are fixedly mounted on the detection seats, a mounting plate is fixedly mounted on the rear side of the detection table, and the detection seats are fixedly mounted on the mounting plate. A row of rotating arms are installed on the front side of the installation plate, a plurality of gland covers used for placing upper covers are fixedly installed on the front side wall and the rear side wall of each rotating arm, the multiple gland covers in one row correspond to the multiple inserting bases in one row in a one-to-one mode, and a detection plate capable of ascending, descending and transversely moving is installed on the portion, located above the detection table, of the installation frame. And a plurality of rows of detection cylinders and a plurality of rows of adsorption heads are fixedly mounted at the bottom of the detection plate. According to the device, the formed one-piece bottle caps can be loaded on the detection table, the electric detection process of the upper caps and the lower caps of the multiple bottle caps can be completed at the same time, then the cap pressing and discharging processes are automatically completed, and detection is comprehensive.

Description

Technical Field

[0001] The invention relates to the technical field of integrated plastic bottle cap detection, and in particular to an electric detection and cap closing device for the air tightness of a connected plastic bottle cap. Background Art

[0002] Plastic bottle caps are a common packaging form for bottles, cans, and barrels, and are particularly widely used in the beverage, chemical, and pharmaceutical fields. Bottle caps for soy sauce bottles, vinegar bottles, and liquor bottles are generally divided into two types: one-piece and two-piece plastic bottle caps. One-piece bottle caps are formed in one piece by an injection molding machine and are divided into an upper cap and a lower cap.

[0003] At present, after the one-piece plastic bottle cap is formed by the injection molding machine, in order to detect the air tightness of the upper cover and the lower cover and whether there are pore defects, high-voltage electrodes are often used. The phenomenon of air breakdown between the electrodes is used. If a voltage that only destroys the air insulation but not the bottle cap is applied between the electrodes, discharge will not occur in the intact bottle cap, but only in defective areas such as pinholes.

[0004] However, the existing electrical detection devices cannot complete the automated detection process of multiple bottle caps at the same time, and most of the electrodes are fixed, which results in that the detection effect is only obvious between a pair of electrodes, and there are cases of missed detection in the area around the electrodes. Summary of the invention

[0005] In view of the above problems, the present invention provides an electrical detection and capping device for the air tightness of a one-piece plastic bottle cap, which can load the formed one-piece bottle cap onto a detection table, and simultaneously complete the electrical detection process of the upper and lower covers of multiple bottle caps, and then automatically complete the capping and unloading processes, so as to achieve comprehensive detection.

[0006] To solve the above problems, the technical solution adopted by the present invention is:

[0007] An electrical detection and closing device for the air tightness of a one-piece plastic bottle cap comprises a detection platform fixedly mounted on a mounting frame, a plurality of rows of detection seats fixedly mounted on the detection platform, a plug-in seat for inserting and placing a lower cover of a one-piece bottle cap fixedly mounted on the detection seat, a mounting plate fixedly mounted on the rear side of the detection platform, a row of rotary arms mounted on the front side of the mounting plate, a plurality of capping covers for placing upper covers fixedly mounted on the front and rear side walls of the rotary arms, a row of multiple capping covers corresponding to a row of corresponding multiple plug-in seats, and a plurality of capping covers on the detection platform on the mounting frame. A detection plate that can be raised and lowered and moved laterally is installed on the top, and multiple rows of detection cylinders and multiple rows of adsorption heads are fixedly installed on the bottom of the detection plate. A spirally movable emitting electrode needle is installed on the bottom of the detection cylinder, and a receiving electrode plate that cooperates with the emitting electrode needle is installed on the bottom of the pressure cover and the plug-in seat. A current detector and a controller electrically connected to the receiving electrode plate are installed at the bottom of the detection platform. A loading plate that can move forward and backward and can be raised and lowered is also installed on the mounting frame above the detection platform, and multiple rows of loading heads are installed at the bottom of the loading plate.

[0008] Preferably, a guide plate is fixedly installed at the bottom of the detection cylinder, and a spiral slideway for the emitting electrode needle to pass through is provided on the surface of the guide plate. A rotating shaft is rotatably connected inside the detection cylinder, a rotating arm is fixedly connected to the lower end of the rotating shaft, a radially slidable slider is installed at the bottom of the rotating arm, the upper end of the emitting electrode needle is fixedly installed on the slider, and a driving component that can synchronously drive multiple rotating shafts to rotate is installed on the detection plate.

[0009] Preferably, the driving assembly includes a driving cavity arranged in the detection plate, the upper ends of the plurality of rotating shafts extend into the driving cavity, the driving cavity is rotatably connected with a plurality of transmission shafts arranged in a front-rear direction, the upper ends of the plurality of rotating shafts are connected to the corresponding transmission shafts via a bevel gear pair, a plurality of worms are connected in series to the rear side of the driving cavity, the rear end of the transmission shaft is connected to the corresponding worm via a worm gear transmission, and a motor that can drive the worm to rotate is installed on the side wall of the detection plate.

[0010] Preferably, a suction cup is installed at the bottom of the adsorption head, and an air suction branch pipe connected to the suction cup is installed inside the adsorption head. The upper end of the air suction branch pipe passes through the detection plate and is connected to an air suction main pipe. The air suction main pipe is externally connected to a negative pressure pump, and an opening and closing component is installed inside the air suction branch pipe.

[0011] Preferably, the opening and closing component includes an opening and closing groove arranged in the adsorption head, the middle part of the opening and closing groove is connected to the suction branch pipe, the groove opening is connected to the side wall of the adsorption head, a sealing block is elastically connected to the opening and closing groove through a spring, the middle part of the sealing block is provided with a connecting port connected to the suction branch pipe, the end of the sealing block is provided with an L-shaped pressure relief port, and a controller electrically connected to the spring is installed on the detection board.

[0012] Preferably, a transverse electric slide rail is installed on the mounting frame, a movable arm is slidably installed on the transverse electric slide rail, a first cylinder is installed on the movable arm, and a telescopic end of the first cylinder is fixedly connected to the detection plate.

[0013] Preferably, a material unloading belt conveyor is installed on the mounting frame on the left side of the testing platform, and a material unloading port for unqualified products is provided between the material unloading belt conveyor and the testing platform.

[0014] Preferably, the side walls of the mounting plate are rotatably connected to multiple swivel shafts, a connecting rod is fixedly connected between the end of the swivel shaft and the corresponding swivel arm, a gear is fixedly connected to the swivel shaft, a second cylinder is installed at the end of the mounting plate, and the telescopic end of the second cylinder is fixedly connected to a rack meshing with multiple gears.

[0015] Preferably, the feeding head is a columnar head, and an annular air bag is embedded in the bottom side wall of the feeding head, and the annular air bag is connected to an external air pump through a connecting tube.

[0016] Preferably, a cross-shaped movable frame is installed on the top of the mounting frame, a rotating cylinder is installed on the vertical movable member of the cross-shaped movable frame, and the rotating end of the rotating cylinder is fixedly connected to the loading plate.

[0017] The beneficial effects of the present invention are:

[0018] 1. By installing multiple rows of detection seats, capping covers, receiving electrode plates, detection barrels, guide plates and transmitting electrode needles, multiple formed one-piece bottle caps are placed on the detection table in an unfolded state, the lower cover is inserted on the insertion seat, and the upper cover is placed in the capping cover. The first cylinder is started to drive the detection plate to move downward, so that the multiple rows of detection barrels first correspond to the multiple rows of upper covers, and the transmitting electrode needles are lowered into the upper covers, and the transmitting electrode needles are discharged. At the same time, the motor is started to drive multiple transmission shafts to rotate through the worm gear and the worm, and then drive multiple shafts to rotate through multiple sets of bevel gear pairs, and then drive the rotating arm to rotate. The transmitting electrode needle moves along the spiral slide on the guide plate, so that the transmitting electrode needle moves spirally from the center to the outside, covering the detection of the entire upper cover. If there is a pore defect in the upper cover, it will break through the air and generate spark discharge between the corresponding receiving electrode plates. After the current is generated, it is recorded by the current detector. After the upper cover is detected, the detection plate is moved horizontally, so that the detection barrel corresponds to the multiple rows of insertion seats and descends to complete the detection process of the lower cover. The detection is comprehensive and the detection effect is good.

[0019] 2. By installing the feeding plate, feeding head and cross-shaped movable frame, the feeding plate is turned to a vertical state by rotating the cylinder, and moved to between the forming molds through the cross-shaped movable frame. Multiple feeding heads are inserted into the formed lower cover, and the air pump inflates the annular airbag through the connecting pipe to expand and support the lower cover. The one-piece bottle cap can be taken out and transported to the top of the testing table. The feeding plate is turned back to a horizontal state, and the lower cover can be inserted onto the testing table by descending. The air pump inhales air, and the annular airbag contracts to release the bottle cap, completing the automatic feeding process.

[0020] 3. After installing the swing arm, connecting rod, swing shaft and capping cover, after completing the electrical detection of the bottle cap, start the second cylinder to drive the rack to move, drive multiple swing shafts to rotate through the gear, drive the swing arm to rotate clockwise through the connecting rod, and drive the capping cover to rotate to a state parallel to the insertion seat, so as to complete the closing process of the upper cover and the lower cover.

[0021] 4. By installing the transverse electric slide rail, adsorption head, opening and closing components, unloading belt conveyor and unqualified product drop-out port, after the inspection is completed, multiple rows of adsorption heads are made to correspond to the closed bottle caps, and then they are lowered to make multiple suction cups touch the corresponding tops of the bottle caps, and the negative pressure pump is started to suck air through the suction main pipe and the suction branch pipe to generate negative pressure to adsorb the bottle caps, and then they are moved to the top of the unloading belt conveyor through the transverse electric slide rail and the moving plate. The controller energizes multiple springs simultaneously to make them contract and pull the sealing block, so that the L-shaped pressure relief port is connected with the suction branch pipe, so that the suction cup is connected with the outside air, the negative pressure is eliminated, and the bottle cap is released to the unloading belt conveyor for loading and unloading. When a bottle cap has a defect, when the inspection plate moves through the drop-out port, the controller controls the corresponding spring to energize separately, and the defective bottle cap is discharged through the drop-out port, and the material separation process is automatically completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 A schematic cross-sectional view of the detection board proposed by the present invention;

[0024] Figure 3 It is a cross-sectional schematic diagram of the detection tube proposed by the present invention;

[0025] Figure 4 It is a cross-sectional schematic diagram of the adsorption head proposed by the present invention;

[0026] Figure 5 A bottom view schematic diagram of the guide plate proposed by the present invention;

[0027] Figure 6 This is a schematic diagram of the connection between the swivel, gear and rack proposed in the present invention;

[0028] Figure 7 This is a schematic diagram of the closed cover state proposed by the present invention.

[0029] In the figure: 1 detection table, 2 current detector, 3 mounting plate, 4 pressure cover, 5 rotary arm, 6 detection seat, 7 insertion seat, 8 receiving electrode plate, 9 rotary shaft, 10 second cylinder, 11 motor, 12 detection plate, 13 detection tube, 14 adsorption head, 15 suction main pipe, 16 first cylinder, 17 moving arm, 18 horizontal electric slide rail, 19 unqualified product drop port, 20 unloading belt conveyor, 21 loading plate, 22 loading head, 23 annular air bag, 24 connecting pipe, 25 rotating cylinder, 26 cross-shaped moving frame, 27 driving cavity, 28 bevel gear pair, 29 worm, 30 guide plate, 31 emission electrode needle, 32 suction cup, 33 suction branch pipe, 34 rotating arm, 35 rotating shaft, 36 spring, 37 opening and closing groove, 38 L-type pressure relief port, 39 sealing block, 40 connecting port, 41 spiral slideway, 42 rack, 43 gear, 44 connecting rod. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0032] Reference Figure 1-7A device for electrically detecting and closing the airtightness of a one-piece plastic bottle cap comprises a detection platform 1 fixedly mounted on a mounting frame, a plurality of rows of detection seats 6 are fixedly mounted on the detection platform 1, a plug-in seat 7 for inserting and placing the lower cover of the one-piece bottle cap is fixedly mounted on the detection seat 6, a mounting plate 3 is fixedly mounted on the rear side of the detection platform 1, a row of rotary arms 5 are mounted on the front side of the mounting plate 3, a plurality of capping covers 4 for placing the upper cover are fixedly mounted on the front and rear side walls of the rotary arms 5, a row of the plurality of capping covers 4 corresponds to a row of the plurality of plug-in seats 7, and the side wall of the mounting plate 3 is rotated There are multiple rotating shafts 9 dynamically connected, and a connecting rod 44 is fixedly connected between the end of the rotating shaft 9 and the corresponding rotating arm 5. A gear 43 is fixedly connected to the rotating shaft 9. A second cylinder 10 is installed at the end of the mounting plate 3. The telescopic end of the second cylinder 10 is fixedly connected with a rack 42 meshing with multiple gears 43. Starting the second cylinder 10 drives the rack 42 to move, and drives the multiple rotating shafts 9 to rotate through the gear 43. The connecting rod 44 drives the rotating arm 5 to rotate clockwise, and drives the pressure cover 4 to rotate to a state parallel to the insertion seat 7, so that the closing process of the upper cover and the lower cover can be completed.

[0033] A detection plate 12 which can be lifted and moved laterally is installed on the mounting frame 1 above the detection platform 1. Multiple rows of detection tubes 13 and multiple rows of adsorption heads 14 are fixedly installed at the bottom of the detection plate 12. A suction cup 32 is installed at the bottom of the adsorption head 14. An air suction branch pipe 33 connected to the suction cup 32 is installed in the adsorption head 14. The upper end of the air suction branch pipe 33 passes through the detection plate 12 and is connected to an air suction main pipe 15. The air suction main pipe 15 is externally connected to a negative pressure pump. An opening and closing component is installed in the air suction branch pipe 33. The opening and closing component includes an opening and closing component arranged in the adsorption head 14. The closed groove 37, the middle part of the opening and closing groove 37 is connected to the suction branch pipe 33, the groove is connected to the side wall of the adsorption head 14, the opening and closing groove 37 is elastically connected with a sealing block 39 through a spring 36, the middle part of the sealing block 39 is provided with a connecting port 40 connected to the suction branch pipe 33, and the end of the sealing block 39 is provided with an L-shaped pressure relief port 38. A controller electrically connected to the spring 36 is installed on the detection plate 12. During the adsorption process, the connecting port 40 is connected to the suction branch pipe 33. During the release process, the L-shaped pressure relief port 38 is connected to the suction branch pipe 33, and the negative pressure disappears.

[0034] Furthermore, a transverse electric slide rail 18 is installed on the mounting frame 18, a movable arm 17 is slidably installed on the transverse electric slide rail 18, a first cylinder 16 is installed on the movable arm 17, the telescopic end of the first cylinder 16 is fixedly connected to the detection plate 12, a feeding belt conveyor 20 is installed on the mounting frame on the left side of the detection platform 1, and a defective product drop port 19 is provided between the feeding belt conveyor 20 and the detection platform 1, the negative pressure pump is started, and air is sucked through the suction main pipe 15 and the suction branch pipe 33 to generate negative pressure to adsorb the bottle cap, and the bottle cap is sucked by the transverse electric The slide rail 18 and the movable plate 17 move to above the unloading belt conveyor 20, and the controller synchronously energizes multiple springs 36 to shrink and pull the sealing block 39, so that the L-shaped pressure relief port 38 is connected with the suction branch pipe 33, so that the suction cup 32 is connected with the outside air, the negative pressure is eliminated, and the bottle cap is released to the unloading belt conveyor 20 for loading and unloading. When a bottle cap has a defect, when the detection plate 12 moves through the unloading port 19, the controller individually controls the corresponding spring 36 to energize, and the defective bottle cap is discharged through the unloading port 19, and the material separation process is automatically completed.

[0035] A spirally movable transmitting electrode needle 31 is installed at the bottom of the detection tube 13, and a receiving electrode plate 8 cooperating with the transmitting electrode needle 31 is installed at the bottom of the pressure cover 4 and the insertion seat 7. A current detector 2 and a controller electrically connected to the receiving electrode plate 8 are installed at the bottom of the detection platform 1. A guide plate 30 is fixedly installed at the bottom of the detection tube 13, and a spiral slide 41 for the transmitting electrode needle 31 to pass through is provided on the disk surface of the guide plate 30. A rotating shaft 35 is rotatably connected in the detection tube 13, and a rotating arm 34 is fixedly connected to the lower end of the rotating shaft 35. A radially slidable slider is installed at the bottom of the rotating arm 34, and the upper end of the transmitting electrode needle 31 is fixedly installed on the slider. A driving component that can synchronously drive multiple rotating shafts 35 to rotate is installed on the detection plate 12. When the transmitting electrode needle 31 discharges, if there is a pore defect in the upper cover, it will break through the air, and spark discharge will be generated between the corresponding receiving electrode plates 8. After the current is generated, it is recorded by the current detector 2.

[0036] Specifically, the driving assembly includes a driving cavity 27 arranged in the detection plate 12, and the upper ends of multiple rotating shafts 35 extend into the driving cavity 27. Multiple transmission shafts arranged in the front-rear direction are rotatably connected in the driving cavity 27. The upper ends of the multiple rotating shafts 35 are connected to the corresponding transmission shafts through a bevel gear pair 28. Multiple worms 29 are connected in series to the rear side of the driving cavity 27, and the rear end of the transmission shaft is connected to the corresponding worm 29 through a worm gear transmission. A motor 11 that can drive the worm 29 to rotate is installed on the side wall of the detection plate 12. The motor 11 is started to drive the multiple transmission shafts to rotate through the worm gear and the worm 29, and then the multiple rotating shafts 35 are driven to rotate through multiple sets of bevel gear pairs 28, thereby driving the rotating arm 34 to rotate, and the emitting electrode needle 31 moves along the spiral slide 41 on the guide plate 30, so that the emitting electrode needle 31 moves spirally from the center to the outside, covering the entire upper cover and lower cover detection, and the detection is comprehensive.

[0037] A loading plate 21 which can be moved forward and backward and can be raised and lowered is also installed on the mounting frame above the detection table 1. A plurality of rows of loading heads 22 are installed at the bottom of the loading plate 21. The loading heads 22 are columnar heads. An annular air bag 23 is embedded in the bottom side wall of the loading head 22. The annular air bag 23 is connected to an external air pump through a connecting pipe 24. A cross-shaped moving frame 26 is installed on the top of the mounting frame. A rotating cylinder 25 is installed on the vertical moving part of the cross-shaped moving frame 26. The rotating end of the rotating cylinder 25 is fixedly connected to the loading plate 21.

[0038] The feeding plate 21 is turned to a vertical state by rotating the cylinder 25, and is moved between the molding molds by a cross-shaped moving frame. A plurality of feeding heads 22 are inserted into the molded lower cover, and the air pump inflates the annular airbag 23 through the connecting pipe 24 to expand and support the lower cover. The one-piece bottle cap can be taken out and transported to the top of the testing table 1. The feeding plate 21 is turned back to a horizontal state and lowered to insert the lower cover onto the testing table 1. The air pump inhales air, and the annular airbag 23 contracts to release the bottle cap, completing the automatic feeding process.

[0039] The lower cover is inserted on the insertion seat 7, and the upper cover is placed in the pressure cover 4. The first cylinder 16 is started to drive the detection plate 12 to move downward, so that the multiple rows of detection tubes 13 first correspond to the multiple rows of upper covers, so that the emitting electrode needle 31 is lowered into the upper cover, and the emitting electrode needle 31 discharges. At the same time, the motor 11 is started to drive the multiple transmission shafts to rotate through the worm gear and the worm 29, and then drive the multiple rotating shafts 35 to rotate through the multiple sets of bevel gear pairs 28, and then drive the rotating arm 34 to rotate. The emitting electrode needle 31 moves along the spiral slide 41 on the guide plate 30, so that the emitting electrode needle 31 moves spirally from the center to the outside, covering the detection of the entire upper cover. If there is a pore defect in the upper cover, it will break through the air and generate spark discharge between the corresponding receiving electrode plates 8. After the current is generated, it is recorded by the current detector 2. After the upper cover is detected, the detection plate 12 moves horizontally, so that the detection tube 13 corresponds to the multiple rows of insertion seats 7 and descends to complete the detection process of the lower cover.

[0040] After completing the electrical inspection of the bottle cap, start the second cylinder 10 to drive the rack 42 to move, drive the multiple rotating shafts 9 to rotate through the gear 43, drive the rotary arm 5 to rotate clockwise through the connecting rod 44, and drive the capping cover 4 to rotate to a state parallel to the insertion seat 7, so that the capping process of the upper cover and the lower cover can be completed. After the inspection is completed, the multiple rows of adsorption heads 14 are corresponding to the bottle caps after the capping, and are lowered to make the multiple suction cups 32 contact the corresponding bottle cap tops, and the negative pressure pump is started to suck air through the suction main pipe 15 and the suction branch pipe 33 to generate negative pressure to adsorb the bottle caps, and then the bottle caps are sucked by the horizontal suction main pipe 15 and the suction branch pipe 33. The electric slide rail 18 and the movable plate 17 move to above the unloading belt conveyor 20, and the controller energizes multiple springs 36 simultaneously to shrink and pull the sealing block 39, so that the L-shaped pressure relief port 38 is connected with the suction branch pipe 33, so that the suction cup 32 is connected with the outside air, the negative pressure is eliminated, and the bottle cap is released to the unloading belt conveyor 20 for loading and unloading. When a bottle cap has a defect, when the detection plate 12 moves through the unloading port 19, the controller individually controls the corresponding spring 36 to energize, and the defective bottle cap is discharged through the unloading port 19, and the material separation process is automatically completed.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrical detection and closing device for the air tightness of a one-piece plastic bottle cap, comprising a detection table (1) fixedly mounted on a mounting frame, characterized in that: The detection platform (1) is fixedly mounted with a plurality of rows of detection seats (6), and the detection seats (6) are fixedly mounted with insertion seats (7) for inserting and placing the lower cover of the one-piece bottle cap. The rear side of the detection platform (1) is fixedly mounted with a mounting plate (3), and the front side of the mounting plate (3) is mounted with a row of rotary arms (5). The front and rear side walls of the rotary arms (5) are fixedly mounted with a plurality of capping covers (4) for placing the upper cover. A row of the plurality of capping covers (4) corresponds to a row of the plurality of insertion seats (7). A detection plate (12) that can be raised and lowered and can be moved laterally is mounted on the mounting frame (1) above the detection platform (1). The detection plate A plurality of rows of detection cylinders (13) and a plurality of rows of adsorption heads (14) are fixedly mounted at the bottom of the detection cylinder (13), a spirally movable emitting electrode needle (31) is mounted at the bottom of the pressure cover (4) and the insertion seat (7), a receiving electrode plate (8) matched with the emitting electrode needle (31) is mounted at the bottom of the detection platform (1), a current detector (2) and a controller electrically connected to the receiving electrode plate (8) are mounted at the bottom of the detection platform (1), and a loading plate (21) movable forward and backward and liftable is also mounted on the mounting frame above the detection platform (1), and a plurality of rows of loading heads (22) are mounted at the bottom of the loading plate (21).

2. The electrical detection and closing device for the air tightness of a one-piece plastic bottle cap according to claim 1, characterized in that: A guide plate (30) is fixedly mounted at the bottom of the detection tube (13); a spiral slideway (41) is provided on the surface of the guide plate (30) for the emission electrode needle (31) to pass through; a rotating shaft (35) is rotatably connected inside the detection tube (13); a rotating arm (34) is fixedly connected to the lower end of the rotating shaft (35); a radially slidable slider is mounted at the bottom of the rotating arm (34); the upper end of the emission electrode needle (31) is fixedly mounted on the slider; and a driving assembly that can synchronously drive a plurality of rotating shafts (35) to rotate is mounted on the detection plate (12).

3. The electrical detection and closing device for the air tightness of a one-piece plastic bottle cap according to claim 2, characterized in that: The driving assembly comprises a driving cavity (27) arranged in the detection plate (12), the upper ends of the plurality of rotating shafts (35) all extend into the driving cavity (27), the driving cavity (27) is rotatably connected with a plurality of transmission shafts arranged in a front-rear direction, the upper ends of the plurality of rotating shafts (35) are transmission-connected to the corresponding transmission shafts through a bevel gear pair (28), the rear side of the driving cavity (27) is serially connected with a plurality of worms (29), the rear ends of the transmission shafts are transmission-connected to the corresponding worms (29) through a worm gear, and the side wall of the detection plate (12) is provided with a motor (11) capable of driving the worms (29) to rotate.

4. The electrical detection and closing device for the air tightness of a one-piece plastic bottle cap according to claim 1, characterized in that: A suction cup (32) is installed at the bottom of the adsorption head (14), and an air suction branch pipe (33) connected to the suction cup (32) is installed in the adsorption head (14). The upper end of the air suction branch pipe (33) passes through the detection plate (12) and is connected to the air suction main pipe (15). The air suction main pipe (15) is externally connected to a negative pressure pump. An opening and closing component is installed in the air suction branch pipe (33).

5. The electrical detection and closing device for the air tightness of a one-piece plastic bottle cap according to claim 4, characterized in that: The opening and closing component includes an opening and closing groove (37) arranged in the adsorption head (14), the middle part of the opening and closing groove (37) is connected to the suction branch pipe (33), and the groove is connected to the side wall of the adsorption head (14), and a sealing block (39) is elastically connected to the opening and closing groove (37) through a spring (36), and a connecting port (40) connected to the suction branch pipe (33) is provided in the middle part of the sealing block (39), and an L-shaped pressure relief port (38) is provided at the end of the sealing block (39), and a controller electrically connected to the spring (36) is installed on the detection plate (12).

6. The electrical detection and closing device for the air tightness of a one-piece plastic bottle cap according to claim 1, characterized in that: A transverse electric slide rail (18) is installed on the mounting frame (18), a movable arm (17) is slidably installed on the transverse electric slide rail (18), a first cylinder (16) is installed on the movable arm (17), and a telescopic end of the first cylinder (16) is fixedly connected to the detection plate (12).

7. The electrical detection and closing device for the air tightness of a one-piece plastic bottle cap according to claim 1, characterized in that: A material unloading belt conveyor (20) is installed on the mounting frame on the left side of the testing platform (1), and a material unloading port (19) for unqualified products is provided between the material unloading belt conveyor (20) and the testing platform (1).

8. The electrical detection and closing device for the air tightness of a one-piece plastic bottle cap according to claim 1, characterized in that: The side wall of the mounting plate (3) is rotatably connected to a plurality of rotating shafts (9), a connecting rod (44) is fixedly connected between the end of the rotating shaft (9) and the corresponding rotating arm (5), a gear (43) is fixedly connected to the rotating shaft (9), a second cylinder (10) is installed at the end of the mounting plate (3), and a telescopic end of the second cylinder (10) is fixedly connected to a rack (42) meshing with the plurality of gears (43).

9. The electrical detection and closing device for the air tightness of a one-piece plastic bottle cap according to claim 1, characterized in that: The feeding head (22) is a columnar head, and an annular air bag (23) is embedded in the bottom side wall of the feeding head (22). The annular air bag (23) is connected to an external air pump through a connecting pipe (24).

10. The one-piece plastic bottle cap electrical detection and closing device for air tightness according to claim 1, characterized in that: A cross-shaped moving frame (26) is installed on the top of the mounting frame, a rotating cylinder (25) is installed on the vertical moving part of the cross-shaped moving frame (26), and the rotating end of the rotating cylinder (25) is fixedly connected to the loading plate (21).

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