A drinking water bucket cover pull ring opening strength detection device

Abstract

The present application belongs to the technical field of bottle cap production, and particularly relates to a drinking water bucket cap pull ring opening strength detection device. The device comprises a bucket cap feeding and turnover assembly, a tear mark groove forming assembly and a pull ring opening strength detection assembly. The turnover assembly loads the drinking water bucket cap by means of a bottle mouth simulation piece, and realizes intermittent transfer between stations by rotation driving. The forming assembly processes the radius by means of a bidirectional screw rod and a laser ranging adjusting cutter bar, and cooperates with a lifting and rotating mechanism to process annular tear mark grooves with different diameters and depths on the inner side of the sealing plate. The detection assembly is configured with a vertical shaft with a keyed bevel gear and a special hook head with an adaptive gap size, the hook head extends into a hidden pull ring clamped in an ejection channel, and the opening tension under the torsional stretching condition is collected by means of a push rod and a pressure sensor. The device is rationally designed, can integrally complete the customized processing of the bucket cap mark groove and the batch detection of the pull ring strength, and is convenient for optimizing the matching parameters of the pull ring and the tear mark groove.

Description

Technical Field

[0001] This invention belongs to the field of bottle cap manufacturing technology, specifically relating to a device for testing the opening strength of a pull ring on a drinking water bottle cap. Background Technology

[0002] In the field of single-use bulk bottled water, it's common practice for water bottles to have a central ejection channel on the cap. This is to allow consumers to easily install the bottle onto a water dispenser, where the smart pump inside the dispenser pushes through the sealing plate of the ejection channel to allow water to flow out. To also meet the needs of suction-type water dispensers, our first product added a pull ring to the outside of the sealing plate of the ejection channel on the cap. A tear groove was created around the pull ring, intended to allow direct opening of the sealing plate from the outside. However, consumer feedback indicated that the diameter of the ejection channel was too small to accommodate the smart pump inside the dispenser, making it difficult to insert fingers into the channel and hook the pull ring, thus affecting usability. Therefore, we designed an improved second product with the pull ring hidden on the outside of the cap. This does not interfere with the smart pump's insertion and allows for easy manual pulling of the ring, improving the user experience.

[0003] In the production and R&D process of the aforementioned improved drinking water bottle cap, it is necessary to study which set of parameters among the tear groove parameters of different diameters and depths can make the opening strength of the pull ring meet the design requirements, given a fixed pull ring structure.

[0004] The existing device for testing the opening strength of drinking water bottle lid pull rings is not well-designed. Firstly, it cannot reliably clamp the bottle lid and requires different diameters and depths of tear grooves to be machined on the inner side of the sealing plate as needed. Secondly, it cannot quickly test the opening strength of the pull ring, resulting in low testing efficiency. Therefore, it is necessary to optimize and improve the existing device for testing the opening strength of drinking water bottle lid pull rings. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned problems existing in the prior art and to provide a device for testing the opening strength of a drinking water bucket lid pull ring.

[0006] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution: This invention provides a device for testing the opening strength of a drinking water bottle lid pull ring, comprising: A bottle cap loading and turnover assembly is used for batch loading of drinking water bottle caps. The assembly is arranged circumferentially with a loading station, a tear groove forming station, a pull ring opening strength testing station, and a unloading station. The drinking water bottle cap includes a cap body, the inside of which is provided with a bottle mouth screw connection area. The top of the cap body is provided with an ejection channel, a storage groove at the outer end of the ejection channel, and a sealing plate at the inner end of the ejection channel. The outer side of the sealing plate is connected to a ring hidden in the storage groove by a pull strip. The pull strip and the ring together form a pull ring. A tear groove forming assembly is provided near the tear groove forming station and is used to process annular tear grooves on the inner side of the sealing plate of a drinking water bottle lid. A pull ring opening strength testing component is installed above the pull ring opening strength testing station and is used to test the opening strength of the pull ring of the drinking water bottle lid.

[0007] Furthermore, in the above-mentioned drinking water bucket lid pull ring opening strength testing device, the pull bar has an L-shaped structure, and a gap of 1 to 3 mm is left between the vertical plate of the pull bar and the inner side wall of the ejection channel.

[0008] Furthermore, in the above-mentioned drinking water bottle cap pull ring opening strength testing device, the bottle cap feeding and turnover assembly includes a horizontal base plate, a rotary driver, a horizontal turntable, fasteners, and bottle mouth simulation components. The horizontal base plate is supported by the rotary driver on the horizontal turntable. Multiple bottle mouth simulation components are installed circumferentially on the upper side of the horizontal turntable by fasteners. The shape of the bottle mouth simulation components matches the shape of the bottle mouth screw connection area. The horizontal turntable has a detection through hole that matches the inner cavity of the bottle mouth simulation component.

[0009] Furthermore, in the aforementioned drinking water bucket lid pull ring opening strength testing device, the tear groove forming component includes a grooved frame plate. The lower side plate of the grooved frame plate is supported by a horizontal rotation drive mechanism via a lower lifting push rod and a straightening joint tube. The horizontal rotation drive mechanism supports an adjustable distance sliding mechanism. The upper side plate of the grooved frame plate is supported by a support block via an upper lifting push rod. The outer diameter of the support block is 1 / 3 to 2 / 3 of the sealing plate diameter.

[0010] Furthermore, in the aforementioned drinking water bucket lid pull ring opening strength testing device, the horizontal rotation drive mechanism consists of a lower plate, a horizontal rotation drive motor, an upper plate, a fixed ring seat, and a moving ring plate. The upper plate is supported on the upper side of the lower plate by the horizontal rotation drive motor. A fixed ring seat is installed on the upper side of the lower plate at the periphery of the horizontal rotation drive motor. An annular limiting groove is opened inward on the upper side of the fixed ring seat. A moving ring plate that slides and is limited in the annular limiting groove is installed on the lower side of the upper plate.

[0011] Furthermore, in the aforementioned drinking water bucket lid pull ring opening strength testing device, the adjustable distance slip mark mechanism includes a grooved seat, a lead screw, a lead screw motor, a support plate, a slip mark cutter bar, a laser rangefinder, a straightening groove block, a straightening ring plate, and a straightening scissor telescopic frame. The two side plates of the grooved seat jointly support the lead screw, which is driven to rotate by the lead screw motor. The lead screw has two lead screw segments with opposite directions of rotation. Each lead screw segment is fitted with a rotation-restricted support plate on its outer side. A slip mark cutter bar is installed at the top of the support plate. A laser rangefinder is installed on the inner side of one of the support plates. A straightening groove block is installed on the inner side of the web plate of the grooved seat. An arc-shaped straightening groove is formed in the straightening groove block. A straightening ring plate that slides and is restricted in the arc-shaped straightening groove is fixed in the middle of the lead screw. A straightening scissor telescopic frame is installed between the two support plates.

[0012] Furthermore, in the aforementioned drinking water bottle cap pull ring opening strength testing device, the pull ring opening strength testing component includes a rectangular frame, a drive push rod, a rotary joint, a series pressure sensor, a vertical shaft, a hook, a flip motor, a driving bevel gear, and a driven bevel gear. The drive push rod is installed on the inner side of the top plate of the rectangular frame. The movable end of the drive push rod is connected to one end of the series pressure sensor via the rotary joint. The other end of the series pressure sensor is connected to the hook via the vertical shaft. The flip motor is installed on the outer side of the rectangular frame. The outer end of the output shaft of the flip motor is equipped with a driving bevel gear. The outer side of the vertical shaft is fitted with a driven bevel gear that meshes with it. The driving bevel gear and the driven bevel gear mesh with each other.

[0013] Furthermore, in the above-mentioned drinking water bucket lid pull ring opening strength testing device, a gear box is installed at the bottom of the rectangular frame and sleeved on the outside of the driving bevel gear and the driven bevel gear. Keyways are symmetrically opened on the outside of the vertical shaft, and convex keys that cooperate with the keyways are symmetrically provided on the inner wall of the driven bevel gear.

[0014] Furthermore, in the aforementioned water bottle cap pull ring opening strength testing device, the hook head is composed of a connecting head, a rotating plate, and an arc-shaped hook plate. The connecting head is installed at the bottom of the vertical shaft. The rotating plate is symmetrically arranged on the outer side of the connecting head. The outer end of the rotating plate is provided with an arc-shaped hook plate. The outer diameter of the cylindrical surface of the outer arc surface of the arc-shaped hook plate matches the diameter of the ejection channel. The thickness of the arc-shaped hook plate is less than the gap between the vertical plate of the pull bar and the inner wall of the ejection channel. The upper side of the arc-shaped hook plate is provided with a hook groove to facilitate hooking the pull ring.

[0015] Furthermore, the above-mentioned drinking water bottle lid pull ring opening strength testing device also includes a controller, which is connected to the bottle lid feeding and turnover assembly, the tear groove forming assembly and the pull ring opening strength testing assembly respectively.

[0016] The beneficial effects of this invention are: 1. This invention features a bucket lid loading and turnover assembly. A bottle mouth simulation component, matching the screw connection area of ​​the drinking water bucket lid, ensures stable assembly and fixation of the lid. Combined with a horizontal turntable's station switching structure, it allows for standardized and fixed positioning of batches of bucket lids. This solves the problems of traditional testing devices failing to reliably clamp the lids and the lids easily shifting and shaking during testing. It provides a stable working foundation for subsequent tear groove forming and pull ring strength testing, avoiding deviations in processing parameters and distortion of test data caused by workpiece displacement.

[0017] 2. This invention features a tear groove forming assembly that combines an adjustable-distance sliding mechanism with a horizontal rotary drive mechanism. The working radius of the sliding tool holder can be adjusted by a bidirectional lead screw driven by a lead screw motor. The diameter of the tear groove can be controlled using a laser rangefinder. Simultaneously, the horizontal rotary drive mechanism drives the tool holder in circumferential motion, and a lifting structure controls the processing depth of the tear groove. This allows for the rapid processing of annular tear grooves of different diameters and depths, facilitating researchers in selecting the optimal matching parameters between the tear groove and the pull ring, thus overcoming the limitation of traditional equipment in independently processing adjustable parameter tear grooves.

[0018] 3. This invention features a specially designed hook structure. The hook's thickness and outer diameter are matched to the lid's ejection channel and the gap between the pull strip and the hook, allowing it to smoothly extend into the ejection channel and hook the concealed pull ring. Simultaneously, it combines a push rod extension and bevel gear rotation drive into a composite opening method, simulating the actual manual pulling action of a consumer. A series pressure sensor collects real-time opening force data. This detection method closely matches real-world usage scenarios, ensuring reliable data and solving the problems of traditional equipment being unable to adapt to concealed pull ring detection and exhibiting large data errors.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front sectional view of the drinking water bucket lid in this invention; Figure 3 This is a top view of the drinking water bucket lid in this invention; Figure 4 This is a schematic diagram of the pull ring structure in this invention; Figure 5This is a schematic diagram of the structure of the bucket lid feeding and turnover assembly in this invention; Figure 6 This is a schematic diagram of the tear groove forming assembly in this invention; Figure 7 This is a schematic diagram of the horizontal rotation drive mechanism in this invention; Figure 8 This is a schematic diagram of the adjustable distance scratch mechanism in this invention; Figure 9 This is a schematic diagram of the pull ring opening strength detection component in this invention; Figure 10 This is a schematic diagram of the cross-section of the vertical axis in this invention; Figure 11 This is a schematic diagram of the vertical shaft rotation drive mechanism in this invention; Figure 12 This is a schematic diagram of the hook structure in this invention; In the attached diagram, the components represented by each number are as follows: 1- Drum lid feeding and turnover assembly, 11- Horizontal base plate, 12- Rotary drive, 13- Horizontal turntable, 14- Fastener, 15- Bottle mouth simulation component, 16- Detection through hole; 2-Tear groove forming assembly, 21-Groove frame plate, 22-Lower lifting push rod, 23-Straightening section tube, 24-Horizontal rotation drive mechanism, 241-Lower plate, 242-Horizontal rotation drive motor, 243-Upper plate, 244-Fixed ring seat, 245-Moving ring plate, 25-Adjustable distance slip mark mechanism, 251-Groove seat, 252-Screw, 253-Screw motor, 254-Support plate, 255-Slip mark cutter bar, 256-Laser rangefinder, 257-Straightening groove block, 258-Straightening ring plate, 259-Straightening scissor telescopic frame, 26-Upper lifting push rod, 27-Support block; 3-Pull ring opening strength detection component, 31-Rectangular frame, 32-Drive push rod, 33-Rotary joint, 34-Series pressure sensor, 35-Vertical shaft, 36-Hook head, 361-Connecting head, 362-Swivel plate, 363-Arc-shaped hook plate, 364-Hook groove, 37-Flipping motor, 38-Driving bevel gear, 39-Driven bevel gear; 4-Drinking water bucket lid, 41-Lid body, 42-Bottle mouth screw connection area, 43-Top outlet channel, 44-Storage groove, 45-Pull ring, 451-Pull strip, 452-Ring body, 46-Sealing plate, 47-Tear groove. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figure 1 As shown, this embodiment provides a device for testing the opening strength of a drinking water bottle cap pull ring, including a cap loading and turnover assembly 1, a tear groove forming assembly 2, and a pull ring opening strength testing assembly 3. The cap loading and turnover assembly 1 is used for batch loading of drinking water bottle caps 4, and the cap loading and turnover assembly 1 is provided with a loading station, a tear groove forming station, a pull ring opening strength testing station, and a unloading station in sequence along the circumference.

[0024] like Figures 2-4 As shown, the drinking water bottle lid 4 includes a lid body 41. The lid body 41 has an internal bottle neck screw connection area 42. The top of the lid body 41 has an ejection channel 43, a receiving groove 44 at the outer end of the ejection channel 43, and a sealing plate 46 at the inner end of the ejection channel 43. A ring 452 hidden in the receiving groove 44 is connected to the outer side of the sealing plate 46 via a pull strip 451. The pull strip 451 and the ring 452 together form a pull ring 45. The pull strip 451 has an L-shaped structure. A gap of 1-3 mm is left between the vertical part of the pull strip 451 and the inner wall of the ejection channel 43. The horizontal part of the pull strip 451 is also hidden in the receiving groove 44.

[0025] like Figure 5 As shown, the barrel lid feeding and turnover assembly 1 includes a horizontal base plate 11, a rotary driver 12, a horizontal turntable 13, fasteners 14, and bottle mouth simulation components 15. The horizontal base plate 11 is supported by the rotary driver 12 and the horizontal turntable 13 is supported by the fasteners 14. Multiple bottle mouth simulation components 15 are installed on the upper side of the horizontal turntable 13 along the circumferential direction. The shape of the bottle mouth simulation component 15 matches the shape of the bottle mouth screw connection area 42. The horizontal turntable 13 is provided with a detection through hole 16 that matches the inner cavity of the bottle mouth simulation component 15.

[0026] The working principle of the bucket lid feeding and turnover component 1 is as follows: The horizontal base plate 11 serves as a fixed support base, providing stable support for the overall assembly. The rotary drive 12 is the power core, driving the horizontal turntable 13 to perform intermittent rotational motion at a fixed angle. Multiple bottle neck simulation parts 15 are evenly assembled around the horizontal turntable 13. The bottle neck simulation parts 15 are structurally perfectly matched with the bottle neck screw connection area 42 of the bucket cap, enabling quick disassembly and sealing of the bucket cap and preventing rotation or displacement during operation. Simultaneously, the turntable has inspection through holes 16, providing a vertical working channel for subsequent groove processing and tensile testing. During operation, the drinking water bucket cap 4 is screwed onto the bottle neck simulation part 15. The turntable rotates intermittently, sequentially conveying the bucket cap to the four main workstations: loading, forming, inspection, and unloading, achieving continuous operation throughout the entire process. Fasteners 14 ensure the stable installation of the bottle neck simulation parts 15, adapting to long-term batch operations.

[0027] like Figure 6 As shown, the tear groove forming assembly 2 is located near the tear groove forming station and is used to process annular tear grooves 47 on the inner side of the sealing plate 46 of the drinking water bottle lid 4. The tear groove forming assembly 2 includes a groove-shaped frame plate 21. The lower side plate of the groove-shaped frame plate 21 is supported by a horizontal rotation drive mechanism 24 via a lower lifting push rod 22 and a straightening joint tube 23. The horizontal rotation drive mechanism 24 supports an adjustable distance sliding mechanism 25. The upper side plate of the groove-shaped frame plate 21 is supported by a support block 27 via an upper lifting push rod 26. The outer diameter of the support block 27 is 1 / 3 to 2 / 3 of the diameter of the sealing plate 46.

[0028] like Figure 7 As shown, the horizontal rotation drive mechanism 24 consists of a lower plate 241, a horizontal rotation drive motor 242, an upper plate 243, a fixed ring seat 244, and a moving ring plate 245. The upper plate 243 is supported on the upper side of the lower plate 241 by the horizontal rotation drive motor 242. The fixed ring seat 244 is installed on the upper side of the lower plate 241 at the periphery of the horizontal rotation drive motor 242. An annular limiting groove is opened inward on the upper side of the fixed ring seat 244. The moving ring plate 245, which is slidably limited in the annular limiting groove, is installed on the lower side of the upper plate 243.

[0029] like Figure 8As shown, the adjustable-distance scratch mechanism 25 includes a slotted seat 251, a lead screw 252, a lead screw motor 253, a support plate 254, a scratching tool 255, a laser rangefinder 256, a straightening slot block 257, a straightening ring plate 258, and a straightening scissor lift telescopic frame 259. The two side plates of the slotted seat 251 jointly support the lead screw 252, which is driven to rotate by the lead screw motor 253. The lead screw 252 has two lead screw sections with opposite directions of rotation. A rotation-restricted support plate 254 is fitted on the outer side of each lead screw section. The scratching tool 255 is mounted on the top of the support plate 254, and a laser rangefinder 256 is mounted on the inner side of one of the support plates 254. A straightening block 257 is installed on the inner side of the web of the slotted seat 251. An arc-shaped straightening groove is opened in the straightening block 257. A straightening ring plate 258 that slides and is limited in the arc-shaped straightening groove is fixed in the middle of the screw rod 252. A straightening scissor telescopic frame 259 is installed between the two support plates 254.

[0030] The working principle of the tear groove molding assembly is as follows: The core function of this component is to process annular tear grooves 47 of different specifications on the inner side of the lid sealing plate 46. The operation is completed by the groove frame plate 21, the lifting structure, the horizontal rotation drive mechanism 24, and the adjustable distance scratch mechanism 25.

[0031] The trough-shaped frame plate 21 is an integral support frame. The upper lifting push rod 26 of the upper side plate can drive the support block 27 to move downward. The support block 27 fits against the inner side of the sealing plate 46 for centered support and positioning, limiting the deformation of the sealing plate 46. The lower lifting push rod 22 of the lower side plate cooperates with the straightening section tube 23 to realize the smooth lifting and lowering of the lower working mechanism and prevent deviation during the lifting process.

[0032] The horizontal rotation drive motor 242 is used as the rotation power source to drive the upper plate 243 and the adjustable distance sliding mechanism 25 above it to make a circular rotation motion. The fixed ring seat 244 and the moving ring plate 245 form a ring sliding limit structure to limit and correct the rotation motion, ensure coaxiality during the rotation process, avoid the tool holder rotation eccentricity, and ensure that the processed groove is a standard ring shape.

[0033] The lead screw motor 253 drives the bidirectional spiral lead screw 252 to rotate, causing the two sets of support plates 254 to move synchronously in opposite directions, thereby adjusting the working radius of the scratch tool bar 255 and thus changing the processing diameter of the tear groove 47. The laser rangefinder 256 detects the displacement distance of the tool bar in real time to achieve dimensional control. The straightening groove block 257, the straightening ring plate 258, and the straightening scissor telescopic frame 259 constitute a multi-straightening structure, which can limit the working deviation of the support plate 254 and the lead screw 252, ensuring smooth and accurate movement and positioning of the tool bar. In conjunction with the lifting structure, the cutting depth of the tool bar is controlled, ultimately completing the processing of grooves with different diameters and depths.

[0034] like Figures 9-11As shown, the pull ring opening strength detection assembly 3 is positioned above the pull ring opening strength detection station and is used to detect the opening strength of the pull ring 45 of the drinking water bottle cap 4. The pull ring opening strength detection assembly 3 includes a rectangular frame 31, a drive push rod 32, a rotary joint 33, a series pressure sensor 34, a vertical shaft 35, a hook 36, a flip motor 37, a driving bevel gear 38, and a driven bevel gear 39. The drive push rod 32 is installed on the inner side of the top plate of the rectangular frame 31. The movable end of the drive push rod 32 is connected to one end of the series pressure sensor 34 via the rotary joint 33. The other end of the series pressure sensor 34 is connected to the hook 36 via the vertical shaft 35. The flip motor 37 is installed on the outer side of the rectangular frame 31. The driving bevel gear 38 is installed on the outer end of the output shaft of the flip motor 37. The driven bevel gear 39, which meshes with the driving bevel gear 38, is sleeved on the outer side of the vertical shaft 35. The driving bevel gear 38 and the driven bevel gear 39 mesh with each other. The flip motor 37, the driving bevel gear 38, and the driven bevel gear 39 together constitute the vertical shaft rotation drive mechanism.

[0035] A gear box is installed at the bottom of the rectangular frame 31, which is sleeved on the outside of the driving bevel gear 38 and the driven bevel gear 39. Keyways are symmetrically opened on the outside of the vertical shaft 35, and convex keys that cooperate with the keyways are symmetrically provided on the inner wall of the driven bevel gear 39.

[0036] like Figure 12 As shown, the hook head 36 consists of a connecting head 361, a rotating plate portion 362, and an arc-shaped hook plate portion 363. The connecting head 361 is installed at the bottom end of the vertical shaft 35. The rotating plate portion 362 is symmetrically arranged on the outer side of the connecting head 361, and the arc-shaped hook plate portion 363 is provided at the outer end of the rotating plate portion 362. The outer diameter of the cylindrical surface on which the outer arc surface of the arc-shaped hook plate portion 363 is located matches the diameter of the ejection channel 43. The thickness of the arc-shaped hook plate portion 363 is less than the gap between the vertical plate portion of the pull bar 451 and the inner wall of the ejection channel 43. A hook groove 364 is provided on the upper side of the arc-shaped hook plate portion 363 to facilitate hooking the pull ring 45.

[0037] The working principle of the pull ring opening strength detection component 3 is as follows: This component is used to simulate manual opening action and detect the opening limit strength of the pull ring 45. The core of the detection is to realize the combined action of tensile force acquisition, rotational pulling, and vertical tension.

[0038] The rectangular frame 31 serves as a fixed support carrier, and the drive push rod 32 provides vertical tension power. The series pressure sensor 34 is connected through the rotary joint 33, which can avoid the torque interference caused by the rotation operation and ensure that the sensor only collects vertical tension data. The series pressure sensor 34 monitors the tension change during the opening process of the pull ring 45 in real time and records the maximum opening strength.

[0039] The flip motor 37 drives the active bevel gear 38 to rotate, which in turn drives the driven bevel gear 39 to rotate via bevel gear meshing. The driven bevel gear 39 drives the vertical shaft 35 to rotate synchronously through the keyway and key engagement structure, thereby realizing the circumferential rotation of the hook head 36, simulating the action of manually twisting and pulling the pull ring 45. The gear box can protect the meshing gears and ensure transmission stability.

[0040] The outer diameter of the arc-shaped hook plate 363 of the hook head 36 matches the ejection channel 43, and its thickness is less than the gap between the pull bar 451 and the ejection channel 43. It can be smoothly inserted into the channel and engaged with the hidden pull ring 45 through the hook groove 364. The rotating plate 362 and the connecting head 361 ensure the connection strength and can stably transmit rotation and tension power, avoiding disengagement or deviation during the pulling process.

[0041] The device is also equipped with a controller, which is connected to the lid feeding and turnover assembly 1, the tear groove forming assembly 2, and the pull ring opening strength detection assembly 3, respectively.

[0042] The specific working process of this embodiment is as follows: The drinking water bottle cap 4 to be tested is assembled onto the bottle mouth simulation part 15 of the horizontal turntable 13. The bottle mouth screw connection area 42 and the bottle mouth simulation part 15 are matched and fixed to complete the limiting and fixing, and the batch of drinking water bottle caps 4 are loaded and ready for station switching.

[0043] The rotary drive 12 drives the horizontal turntable 13 to rotate, conveying the fixed drinking water bottle lid 4 to the tear groove forming station. Then, the upper lifting push rod 26 drives the support block 27 downwards, fitting against the inner side of the sealing plate 46 to complete centering support and positioning, preventing deformation of the sealing plate 46 during processing. The lower lifting push rod 22 drives the horizontal rotary drive mechanism 24 and the adjustable distance scratching mechanism 25 upwards, causing the scratching tool bar 255 to fit against the inner side of the sealing plate 46 to be processed. According to preset parameters, the lead screw motor 253 adjusts the working radius of the scratching tool bar 255, and the laser rangefinder 256 completes dimensional calibration, determining the diameter and depth parameters of the tear groove 47. Subsequently, the horizontal rotary drive motor 242 starts, driving the scratching tool bar 255 to perform circumferential rotation, coordinating with the lifting feed action to process a pre-specified annular tear groove 47 on the inner side of the sealing plate 46. After processing, the lower mechanism resets.

[0044] After the tear groove 47 is processed, the horizontal turntable 13 rotates again, conveying the processed drinking water bottle cap 4 to the pull ring opening strength testing station. The testing component is activated, driving the push rod 32 to move the vertical shaft 35 and hook head 36 downwards. The hook head 36 passes through the cap ejection channel 43 and uses the hook groove 364 of the arc-shaped hook plate 363 to hook the pull ring 45 hidden in the storage groove 44. Subsequently, according to the testing requirements, the flip motor 37 drives the vertical shaft 35 to rotate slightly through the bevel gear transmission, simulating the action of manually twisting the pull ring 45, while simultaneously driving the push rod 32 to slowly move upwards, applying a vertical tensile force to the pull ring 45. During the operation, the series pressure sensor 34 continuously collects the tensile force value in real time, recording the tensile force change data of the pull ring 45 from opening to breaking, and obtaining the opening strength parameters of the pull ring 45. After the test is completed, the series pressure sensor 34 records and stores the test data.

[0045] After the inspection is completed, each inspection unit resets, and the horizontal turntable 13 continues to rotate, conveying the inspected drinking water bottle caps 4 to the unloading station. The staff removes the inspected drinking water bottle caps 4, completing a single work cycle. The equipment continuously repeats the above process to achieve batch and continuous processing of tear grooves 47 and opening strength testing of drinking water bottle caps 4, providing data support for R&D personnel to optimize the structural parameters of the cap pull ring 45 and tear grooves 47.

[0046] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for testing the opening strength of a drinking water bottle lid pull ring, characterized in that, include: A bottle cap loading and turnover assembly is used for batch loading of drinking water bottle caps. The assembly is arranged circumferentially with a loading station, a tear groove forming station, a pull ring opening strength testing station, and a unloading station. The drinking water bottle cap includes a cap body, the inside of which is provided with a bottle mouth screw connection area. The top of the cap body is provided with an ejection channel, a storage groove at the outer end of the ejection channel, and a sealing plate at the inner end of the ejection channel. The outer side of the sealing plate is connected to a ring hidden in the storage groove by a pull strip. The pull strip and the ring together form a pull ring. A tear groove forming assembly is provided near the tear groove forming station and is used to process annular tear grooves on the inner side of the sealing plate of a drinking water bottle lid. A pull ring opening strength testing component is installed above the pull ring opening strength testing station and is used to test the opening strength of the pull ring of the drinking water bottle lid.

2. The device for detecting the opening strength of a drinking water barrel lid pull ring according to claim 1, characterized in that, The pull bar has an L-shaped structure, and there is a gap of 1 to 3 mm between the vertical plate of the pull bar and the inner wall of the ejection channel.

3. The device for detecting the opening strength of a drinking water bucket lid pull ring according to claim 2, characterized in that, The barrel lid feeding and turnover assembly includes a horizontal base plate, a rotary driver, a horizontal turntable, fasteners, and bottle mouth simulation components. The horizontal base plate is supported by the rotary driver and the horizontal turntable is supported by the fasteners. Multiple bottle mouth simulation components are installed circumferentially on the upper side of the horizontal turntable. The shape of the bottle mouth simulation components matches the shape of the bottle mouth screw connection area. The horizontal turntable has a detection through hole that matches the inner cavity of the bottle mouth simulation component.

4. The device for detecting the opening strength of a drinking water bucket lid pull ring according to claim 3, characterized in that, The tear groove forming assembly includes a grooved frame plate. The lower side plate of the grooved frame plate is supported by a horizontal rotation drive mechanism via a lower lifting push rod and a straightening section tube. The horizontal rotation drive mechanism supports an adjustable distance sliding mechanism. The upper side plate of the grooved frame plate is supported by a support block via an upper lifting push rod. The outer diameter of the support block is 1 / 3 to 2 / 3 of the diameter of the sealing plate.

5. The device for detecting the opening strength of a drinking water bucket lid pull ring according to claim 4, characterized in that, The horizontal rotation drive mechanism consists of a lower plate, a horizontal rotation drive motor, an upper plate, a fixed ring seat, and a moving ring plate. The upper plate is supported on the upper side of the lower plate by the horizontal rotation drive motor. A fixed ring seat is installed on the upper side of the lower plate at the periphery of the horizontal rotation drive motor. An annular limiting groove is opened inward on the upper side of the fixed ring seat. A moving ring plate that is slidably limited in the annular limiting groove is installed on the lower side of the upper plate.

6. The device for detecting the opening strength of a drinking water bucket lid pull ring according to claim 5, characterized in that, The adjustable distance scratch mechanism includes a slotted seat, a lead screw, a lead screw motor, a support plate, a scratch cutter bar, a laser rangefinder, a straightening groove block, a straightening ring plate, and a straightening scissor telescopic frame. The two side plates of the slotted seat jointly support the lead screw, which is driven to rotate by the lead screw motor. The lead screw has two sections with opposite directions of rotation. Each lead screw section is fitted with a rotation-restricting support plate on its outer side. A scratch cutter bar is installed at the top of the support plate. A laser rangefinder is installed on the inner side of one of the support plates. A straightening groove block is installed on the inner side of the web plate of the slotted seat. An arc-shaped straightening groove is formed in the straightening groove block. A straightening ring plate, which slides and is restricted in the arc-shaped straightening groove, is fixed in the middle of the lead screw. A straightening scissor telescopic frame is installed between the two support plates.

7. The device for detecting the opening strength of a drinking water bucket lid pull ring according to claim 6, characterized in that, The pull ring opening strength detection assembly includes a rectangular frame, a drive push rod, a rotary joint, a series pressure sensor, a vertical shaft, a hook, a flip motor, a driving bevel gear, and a driven bevel gear. The drive push rod is installed on the inner side of the top plate of the rectangular frame. The movable end of the drive push rod is connected to one end of the series pressure sensor via the rotary joint. The other end of the series pressure sensor is connected to the hook via the vertical shaft. The flip motor is installed on the outer side of the rectangular frame. The driving bevel gear is installed on the outer end of the output shaft of the flip motor. The driven bevel gear is fitted on the outer side of the vertical shaft and meshes with it. The driving bevel gear and the driven bevel gear mesh with each other.

8. The device for detecting the opening strength of a drinking water bucket lid pull ring according to claim 7, characterized in that, The bottom of the rectangular frame is fitted with a gear box that is sleeved on the outside of the driving bevel gear and the driven bevel gear. The outer side of the vertical shaft is symmetrically provided with keyways, and the inner wall of the driven bevel gear is symmetrically provided with protruding keys that cooperate with the keyways.

9. A device for detecting the opening strength of a drinking water bucket lid pull ring according to claim 8, characterized in that, The hook head consists of a connecting head, a rotating plate, and an arc-shaped hook plate. The connecting head is installed at the bottom of the vertical shaft. The rotating plate is symmetrically arranged on the outer side of the connecting head. The outer end of the rotating plate is provided with an arc-shaped hook plate. The outer diameter of the cylindrical surface of the arc-shaped hook plate matches the diameter of the ejection channel. The thickness of the arc-shaped hook plate is less than the gap between the vertical plate of the pull bar and the inner wall of the ejection channel. The upper side of the arc-shaped hook plate is provided with a hook groove to facilitate hooking the pull ring.

10. A device for detecting the opening strength of a drinking water bucket lid pull ring according to claim 9, characterized in that, It also includes a controller, which is connected to the lid feeding and turnover assembly, the tear groove forming assembly, and the pull ring opening strength detection assembly, respectively.

Images