Precise counting device and method for easy-open lids

Abstract

The invention discloses an easy-open lid accurate counting device and method, the device comprises a chute, a photoelectric sensor and a gland assembly, and the gland assembly comprises a gland block, an optical axis, a spring and a pulse air source assembly; a directional separation spraying hole is formed in the bottom of the cover pressing block, when high-pressure gas conveyed by the pulse gas source assembly is sprayed out from the directional separation spraying hole, thrust towards the photoelectric sensor is applied to the to-be-counted easy-to-pull covers, and the easy-to-pull covers are pushed to enter a counting area one by one for counting; and the counter-acting force generated by gas injection drives the cover pressing block to move upwards along the optical axis, the spring is compressed, and therefore the adjacent clamped easy-to-pull covers are separated through the knocking force. According to the technical scheme, the directional separation spraying holes are matched with the pulse air source, the functions of air injection cover pushing and counter-acting force knocking separation are achieved at the same time, the clamping problem of the adjacent easy-to-pull covers is effectively solved, it is ensured that the easy-to-pull covers pass through the counting area one by one, and the counting precision is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of easy-open can production equipment technology, specifically to a device and method for accurately counting easy-open cans one by one during the easy-open can production process, applicable to the counting stage of automated production lines for easy-open cans of various specifications. Background Technology

[0002] Currently, the mainstream counting method on easy-open candy production lines relies on photoelectric sensors combined with a chute conveyor structure. However, the outer edge of the candy has grooves, and adjacent candies can easily overlap and become stuck together, causing multiple candies to pass through the photoelectric sensor simultaneously, resulting in missed or incorrect counts. Furthermore, traditional chutes only use simple limiting structures to ensure the balance of the candy's movement, which is insufficient to solve the problem of candy jamming, leading to poor counting stability. Manual separation is not only inefficient but also increases labor costs, failing to meet the demands of high-speed production lines. As the scale of easy-open candy production expands and automation increases, the problems of incomplete candy separation and insufficient counting accuracy in existing counting equipment become increasingly prominent. There is an urgent need for a technical solution that can achieve stable candy conveying and accurate counting to meet the high-efficiency and precise counting requirements of production lines. Summary of the Invention

[0003] This invention aims to solve the problem of low counting accuracy and unstable conveying caused by the easy jamming of adjacent easy-open lids in existing easy-open lid counting devices. It provides an easy-open lid accurate counting device and method that integrates three major functions: "air jet pushing, reaction force knocking separation, and elastic pressure stabilization". This allows easy-open lids to pass through the counting area one by one, significantly improving counting accuracy and conveying stability.

[0004] To achieve the above objectives, this application provides a precise counting device for easy-open lids. The edge of the easy-open lid is provided with an annular groove. The precise counting device for easy-open lids includes a frame, a slide, a photoelectric sensor, and a lid pressing assembly. The slide is fixed on the frame and is used to carry and transport easy-open lids. The photoelectric sensor is installed above the slide, corresponding to the counting area, and is used to detect the passing easy-open lids.

[0005] The cap assembly includes a cap block, an optical axis, a spring, and a pulse air source assembly. The optical axis is vertically fixed on the mounting bracket. The cap block has a through hole adapted to the optical axis. The cap block is sleeved on the optical axis through the through hole and can slide up and down along the optical axis. The spring is sleeved on the outside of the optical axis, with its two ends abutting against the mounting bracket and the top of the cap block, respectively. It is used to provide downward elastic pressure to the cap block, so that the bottom of the cap block fits against the top of the easy-open cap, thereby achieving elastic cap stability.

[0006] The bottom of the pressure cap block is provided with a directional separation nozzle, which is tilted downward toward the photoelectric sensor and located in front of the feed end of the photoelectric sensor. The pulse gas source assembly includes a high-pressure gas source and a gas pipeline. One end of the gas pipeline is connected to the high-pressure gas source, and the other end passes through the pressure cap block and is connected to the directional separation nozzle, which is used to deliver pulse high-pressure gas to the nozzle.

[0007] When the high-pressure gas supplied by the pulse gas source component is ejected from the directional separation nozzle, it applies a pushing force toward the photoelectric sensor to the easy-open cover to be counted, pushing the easy-open cover into the counting area one by one for counting; and the reaction force generated by the gas injection drives the cover block to move upward along the optical axis, and the spring is compressed; when the pulse gas stops being ejected, the reaction force disappears, the spring resets and pushes the cover block downward, thereby striking the easy-open cover at a certain frequency, causing adjacent locked easy-open covers to separate.

[0008] Furthermore, the pulse gas source assembly is equipped with a solenoid valve on its gas pipeline. The solenoid valve is electrically connected to a photoelectric sensor. When the photoelectric sensor detects that the previous easy-open cover has left the counting area, the solenoid valve controls the pulse gas source to inject gas, thereby achieving synchronous linkage between gas injection and easy-open cover delivery.

[0009] Furthermore, it includes two pressure cap blocks, which are symmetrically arranged. The diameter of the directional separation nozzle is 0.8-1.2mm. Each pressure cap block has at least one directional separation nozzle at its bottom, which corresponds to both sides of the center of the easy-open cover. The distance between the center of the nozzle and the detection area of ​​the photoelectric sensor is 5-8mm, ensuring that the gas thrust is accurately applied to the easy-open cover to be counted.

[0010] Furthermore, the spring has a stiffness coefficient of 5-8 N / mm. Under natural conditions, the pressure of the capping block on the easy-open cover is 10-15 N, so as to ensure stable delivery of the easy-open cover and avoid excessive pressure that would hinder the movement of the easy-open cover.

[0011] Furthermore, it also includes a feeding guide wheel mechanism and a discharging guide wheel mechanism;

[0012] The feeding guide wheel mechanism includes two first guide wheels and a first drive motor. The two first guide wheels are symmetrically installed on both sides of the slide groove, and the wheel surface contacts the side of the easy-open cover. The first drive motor is connected to the first guide wheel for driving the first guide wheel to rotate and convey the easy-open cover towards the cap assembly.

[0013] The discharge guide wheel mechanism includes two second guide wheels and a second drive motor. The two second guide wheels are symmetrically installed on both sides of the slide groove and located behind the discharge end of the cap assembly. The wheel surface is in contact with the side of the easy-open cap. The second drive motor is connected to the second guide wheel for driving the second guide wheel to rotate and convey the counted easy-open cap out of the counting area.

[0014] Furthermore, the wheel body of the first guide wheel and the second guide wheel is made of polyurethane with a hardness of 60-70A. An annular groove is provided in the middle of the wheel body. The width of the annular groove is 0.4mm and the depth is 0.5mm. The annular groove fits into the side of the easy-open cover, increasing friction while avoiding scratching the easy-open cover.

[0015] To address the aforementioned technical problems, this application also provides another technical solution:

[0016] A method for accurately counting easy-open lids, based on any of the above-described easy-open lid accurate counting devices, includes the following steps:

[0017] Elastic cap: Under the elastic pressure of the spring, the bottom of the cap block is attached to the top of the easy-open cap, forming an elastic compression on the easy-open cap;

[0018] Jet-driven push-open cover and knock-to-separate mechanism: When the easy-open cover is delivered to the area below the directional separation nozzle, the pulse gas source assembly delivers pulsed high-pressure gas to the nozzle. The gas is ejected from the nozzle, pushing the easy-open cover to be counted towards the photoelectric sensor. At the same time, the reaction force of the gas jet causes the pressure block to slide upward, compressing the spring. After the pulse gas stops, the spring resets and pushes the pressure block downward, thereby knocking the easy-open cover at a certain frequency, separating adjacent locked easy-open covers.

[0019] Precise counting: A single push-open lid passes through the counting area of ​​the photoelectric sensor, which detects the lid and completes the counting.

[0020] Repeat the above steps to achieve continuous and accurate counting of each easy-open lid.

[0021] Furthermore, the pressure of the pulsed high-pressure gas is 0.4-0.8MPa, the pulse frequency is 10-20Hz, and the pulse duration is 0.1-0.3s, ensuring that the gas thrust can both push the easy-open cover to move and overcome the elastic downward pressure of the spring in a short time, pushing the cover block in the opposite direction away from the easy-open cover.

[0022] Furthermore, after the photoelectric sensor detects the easy-open cover, it sends a counting signal to the control system. The control system records the counting data in real time and issues an alarm when the counting data is abnormal, so that staff can troubleshoot the fault in a timely manner.

[0023] Unlike existing technologies, the above-mentioned precise counting device for pull-out covers includes a slide, a photoelectric sensor, and a cover assembly. The cover assembly includes a cover block, an optical axis, a spring, and a pulse gas source assembly. The bottom of the cover block has a directional separation nozzle. When the high-pressure gas supplied by the pulse gas source assembly is ejected from the directional separation nozzle, it applies a pushing force towards the photoelectric sensor to the pull-out covers to be counted, pushing the pull-out covers one by one into the counting area for counting. The reaction force generated by the gas injection drives the cover block to move upward along the optical axis, and the spring is compressed. When the pulse gas stops being injected, the reaction force disappears, the spring returns to its original position, and pushes the cover block downward, generating a knocking force on the pull-out covers, causing adjacent locked pull-out covers to separate. In this technical solution, by combining directional separation nozzles with a pulse air source, the functions of "air jet pushing the cover" and "reaction force knocking separation" are realized simultaneously, effectively solving the problem of adjacent easy-open covers jamming, ensuring that easy-open covers pass through the counting area one by one, and significantly improving counting accuracy; and the spring and optical shaft structure of the cover assembly realizes the elastic cover stability, avoids the easy-open covers from shifting during the conveying process, and further ensures counting accuracy.

[0024] The above description of the invention is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0025] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of the present invention and other related contents, and should not be considered as limitations on this application.

[0026] In the accompanying drawings of the instruction manual:

[0027] Figure 1 This is a schematic diagram of the structure of the easy-open lid precision counting device described in a specific embodiment;

[0028] Figure 2 This is a side view of the easy-open lid precision counting device described in a specific embodiment;

[0029] Figure 3 This is a front view of the easy-open cover precision counting device described in a specific embodiment;

[0030] Figure 4 This is a cross-sectional view of the easy-open lid precision counting device described in a specific embodiment;

[0031] Figure 5 for Figure 4 A magnified view of part A in the middle;

[0032] Figure 6A flowchart illustrating the precise counting method for easy-open lids as described in a specific implementation;

[0033] The reference numerals used in the above figures are explained as follows:

[0034] 1. Frame; 2. Slide rail; 3. Control cabinet; 4. Counting assembly; 5. Easy-open cover; 41. Photoelectric sensor; 42. Mounting bracket; 43. Second guide wheel; 44. First guide wheel; 45. Cover block;

[0035] 410. Counting area; 411. Transmitter; 412. Receiver;

[0036] 421. Height adjustment groove; 451. Spring; 452. Optical axis; 453. Directional separation nozzle; Detailed Implementation

[0037] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0038] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0039] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0040] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0041] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0042] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0043] As understood in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0044] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0045] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0046] Please see Figures 1 to 5This embodiment provides a precise counting device for easy-open lids, used to accurately count the number of easy-open lids 5 produced. This precise counting device for easy-open lids incorporates three main functional designs: air-push lid pushing, reaction force knocking separation, and elastic pressure stabilization. Therefore, it can effectively separate the easily-open lids 5 that are locked together, and count them one by one through the counting area 410, improving the counting accuracy of the easy-open lids 5.

[0047] like Figure 1 As shown, in this embodiment, the easy-open lid precise counting device includes a frame 1, a slide 2, a photoelectric sensor 41, a lid pressing assembly, a feeding guide wheel mechanism, and a discharging guide wheel mechanism. A control cabinet 3 is located on the side of the frame 1, containing a control circuit and a counting circuit connected to the photoelectric sensor. The frame 1 and slide 2 are existing technologies, only used for basic support and not detailed. The slide 2 is horizontally positioned and fixed to the frame 1, used to transport easy-open lids for counting. The photoelectric sensor 41 and the lid pressing assembly form a counting component 4. The photoelectric sensor 41 is installed in the counting area 410 above the slide 2 to detect easy-open lids; the photoelectric sensor 41 is mounted on a mounting bracket 42, which spans the slide 2 and is fixed to the frame 1, thus positioning the photoelectric sensor 41 above the slide 2. In this embodiment, the core improved component is the lid pressing assembly, which, in conjunction with the feeding / discharging guide wheel mechanism, achieves precise counting. Figure 3 As shown, to accommodate easy-open lids of different sizes, the mounting bracket 42 is provided with a height adjustment groove 421. The photoelectric sensor 41 is mounted on both sides within the height adjustment groove 421 using fasteners. The height adjustment groove 421 is vertically oriented and has oblong holes, thus allowing adjustment of the mounting height of the photoelectric sensor 41. Figure 5 As shown, the bottom of the photoelectric sensor 41 is provided with a transmitter 411 and a receiver 412. The transmitter 411 is used to emit infrared light. When an easy-open cover passes under the photoelectric sensor 41, the infrared light is reflected and thus received by the receiver 412. Therefore, counting is achieved based on the number of pulses received by the receiver 412.

[0048] Combination Figure 1 , Figure 2 and Figure 3As shown, the cap assembly includes a cap block 45, an optical axis 452, a spring 451, and a pulse air source assembly. The optical axis 452 is vertically fixed to the mounting bracket 42. There can be two or more optical axes 452; in this embodiment, two cap blocks 45 are provided, each with two optical axes 452. The two optical axes 452 are located in front of the feed end and behind the discharge end of the photoelectric sensor 41, respectively. The cap block 45 has an arc shape adapted to the shape of the easy-open cover on the side facing the easy-open cover (i.e., the bottom of the cap block 45). The cap block 45 has a through hole adapted to the optical axis 452, allowing it to slide up and down while fitted onto the optical axis 452. The spring 451 is fitted onto the outside of the optical axis 452, with its two ends abutting against the mounting bracket 42 and the top of the cap block 45, respectively. Figure 4 and Figure 5 As shown, the bottom of the pressure cap block 45 has a directional separation nozzle 453 (tilted downwards towards the photoelectric sensor 41), and the nozzle is connected to the pulse gas source assembly through a gas pipeline. When the high-pressure gas supplied by the pulse gas source assembly is ejected from the directional separation nozzle 453, it applies a pushing force towards the photoelectric sensor 41 to the easy-open covers to be counted, pushing the easy-open covers one by one into the counting area 410 for counting; and the reaction force generated by the gas injection drives the pressure cap block 45 to move upwards along the optical axis 452, and the spring 451 is compressed; when the pulse gas stops being ejected, the reaction force disappears, the spring 451 resets and pushes the pressure cap block 45 downwards, thereby striking the easy-open covers at a certain frequency, causing adjacent locked easy-open covers to separate.

[0049] When the easy-open lid counting device counts easy-open lids, the spring 451 provides downward elastic pressure to the pressure block 45, causing the bottom of the pressure block 45 to adhere to the top of the easy-open lid, stably pressing the easy-open lid within the slide groove 2 and preventing it from shifting during transport. Furthermore, the pulse gas source delivers high-pressure gas to the nozzle, which sprays out and applies a thrust towards the photoelectric sensor 41 to the easy-open lids to be counted, pushing them one by one into the counting area 410, thereby improving counting accuracy. Figure 4 and Figure 5As shown, the sequential separation entry into the counting area 410 means that only one easy-open cover enters the counting area 410 at a time, and this easy-open cover is separate from the adjacent easy-open covers, not attached together, thereby avoiding interference from adjacent easy-open covers and improving counting accuracy. Furthermore, in this embodiment, before the easy-open cover enters the counting area 410, the pressing block 45 repeatedly taps the easy-open cover below it, which can preemptively separate the locked easy-open covers. Specifically, the reaction force generated by the gas jet from the directional separation nozzle 453 drives the pressing block 45 to move upward along the optical axis 452, at which time the spring 451 is compressed; after the pulsed gas stops, the reaction force disappears, the spring 451 resets, and pushes the pressing block 45 downward to tap the easy-open cover. Therefore, repeating the above tapping process allows the pressing block 45 to tap the easy-open cover at the frequency of the pulsed gas, thereby breaking the locked state of adjacent easy-open covers formed by the edge grooves and separating the covers.

[0050] like Figure 1 and Figure 2 As shown, the feeding guide wheel mechanism in the easy-open lid precision counting device includes two first guide wheels 44, which are symmetrically installed on both sides of the slide 2 (in front of the feeding end of the lid assembly). The wheel surfaces contact the sides of the easy-open lids, and the first guide wheels 44 are connected to a first drive motor. The first drive motor drives the guide wheels to rotate, and conveys the easy-open lids to the lid assembly through friction, ensuring that the lids enter the counting area 410 in an orderly manner. Similar to the feeding guide wheel mechanism, the discharging guide wheel mechanism includes two second guide wheels 43, which are symmetrically installed on both sides of the slide 2 (behind the discharging end of the lid assembly) and connected to a second drive motor. The motor drives the guide wheels to rotate, conveying the counted easy-open lids out of the counting area 410 to avoid accumulation.

[0051] In this embodiment, the first guide wheel 44 mechanism drives the easy-open cover to move towards the pressure cover assembly, and the pressure cover block 45 adheres to the top of the easy-open cover under the action of the spring 451, stabilizing the cover body; during the movement of the easy-open cover, the pulse air source jets air to push the easy-open cover towards the photoelectric sensor 41, and at the same time the reaction force drives the pressure cover block 45 to move upward, and the spring 451 resets and knocks to separate the adjacent locking cover bodies; then each easy-open cover separates one by one and passes through the photoelectric sensor 41 to complete the counting; after counting, the second guide wheel 43 mechanism conveys the counted easy-open cover out of the device, and the cycle is repeated.

[0052] In this embodiment, the "air-jet push-to-open + tap-to-separate" linkage ensures that each easy-open cover passes through the counting area 410 one by one, avoiding missed or incorrect counts caused by simultaneous counting of multiple covers, thus significantly improving counting accuracy. Furthermore, the elastic pressure cover, combined with the guide wheel mechanism, restricts easy-open cover displacement, preventing deviation or tipping during transport, making it suitable for high-speed production lines. In this embodiment, the pressure block 45 simultaneously performs the functions of pressing and separating the covers (i.e., tapping to separate the engaged easy-open covers), eliminating the need for additional separation drive components. The push-to-open and tapping actions are synchronously achieved through a pulse air source, reducing equipment complexity and cost.

[0053] In this embodiment, a solenoid valve is installed on the gas pipeline of the pulse gas source assembly. The solenoid valve is electrically connected to the photoelectric sensor 41. When the photoelectric sensor 41 detects that the previous easy-open cover has left the counting area 410, the solenoid valve controls the pulse gas source to spray gas, realizing synchronous linkage between gas spraying and easy-open cover delivery. In this embodiment, the solenoid valve and the photoelectric sensor 41 can be linked: when the photoelectric sensor 41 detects that the previous easy-open cover has left the counting area 410, it triggers the solenoid valve to spray gas, realizing synchronous control of "spraying as soon as the cover arrives", avoiding gas waste or delay.

[0054] In the above embodiment, two pressure blocks 45 are provided, symmetrically arranged. The diameter of the directional separation nozzle 453 is 0.8-1.2mm. Each pressure block 45 has at least one directional separation nozzle 453 at its bottom, corresponding to both sides of the center of the easy-open cover. The distance between the center of the nozzle and the detection area of ​​the photoelectric sensor 41 is 5-8mm, ensuring that the gas thrust is accurately applied to the easy-open cover to be counted. Furthermore, the spring 451 has a stiffness coefficient of 5-8N / mm. Under natural conditions, the pressure of the pressure block 45 on the easy-open cover is 10-15N, ensuring stable easy-open cover conveying while avoiding excessive pressure that could hinder the movement of the easy-open cover.

[0055] The spring 451 has a stiffness coefficient of 5-8 N / mm to ensure a cap pressure of 10-15 N, which can stabilize the cap without hindering its movement.

[0056] The nozzles have a diameter of 0.8-1.2mm and are symmetrically distributed in two positions. Combined with a distance of 5-8mm from the photoelectric sensor, this ensures that the gas thrust is precisely applied to both sides of the cap's center, preventing thrust deviation. Furthermore, the pulsed gas pressure is 0.4-0.8MPa, and the duration is 0.1-0.3s, which is sufficient to move the cap without causing it to tip over due to excessive thrust. The 10-20Hz frequency adapts to the production line speed, achieving synchronous "one cap, one spray". In this embodiment, parameter optimization ensures that the capping, air spraying, and tapping functions are coordinated and matched, further improving separation accuracy and conveying stability, and adapting to different sizes of easy-open caps (50-60mm in diameter).

[0057] The first guide wheel 44 and the second guide wheel 43 are made of polyurethane with a hardness of 60-70A. An annular groove is formed in the middle of the wheel body, with a width of 0.4mm and a depth of 0.5mm. The annular groove fits snugly against the side of the easy-open cover, increasing friction while preventing scratches.

[0058] The guide wheel is made of polyurethane 60-70A, which combines wear resistance and elasticity. The annular groove on the wheel surface fits snugly against the side of the easy-open cover, increasing friction while preventing scratches on the cover. Furthermore, the second motor rotates 10%-15% faster than the first motor, creating a tension difference that ensures stable feeding and rapid discharge, preventing cover accumulation after counting; the adjustable range is 50-100 rpm. In this embodiment, the material, structure, and rotation speed of the guide wheel mechanism are optimized to solve problems such as slippage, cover scratching, and accumulation associated with traditional guide wheels, improving conveying efficiency and cover integrity.

[0059] like Figure 6 In another embodiment, a method for accurately counting easy-open lids is provided, which is implemented based on the easy-open lid accurate counting device described in any of the above embodiments. The method includes the following steps:

[0060] S501, Inlet Cap: The easy-open cap is driven to move toward the pressure cap assembly via the first guide wheel 44 mechanism;

[0061] S502, Elastic cover: Under the elastic pressure of spring 451, the bottom of the cover block 45 is attached to the top of the easy-open cover, forming an elastic compression on the easy-open cover;

[0062] S503, Air Jet Push and Knocking Separation: When the easy-open cover is delivered to the area below the directional separation nozzle 453, the pulse gas source assembly delivers pulsed high-pressure gas to the nozzle. The gas is ejected from the nozzle, pushing the easy-open cover to be counted towards the photoelectric sensor 41. At the same time, the reaction force of the gas jet causes the pressure block 45 to slide upward, and the spring 451 is compressed. After the pulse gas stops, the spring 451 resets and pushes the pressure block 45 downward, thereby knocking the easy-open cover at a certain frequency, causing the adjacent locked easy-open covers to separate.

[0063] S504, Precise counting: The single push-open lid passes through the counting area 410 of the photoelectric sensor 41 (passing through the counting area 410 of the photoelectric sensor 41 one by one), and the photoelectric sensor 41 detects the easy-open lid and completes the counting.

[0064] S505, Lid Dispensing: After counting, the second guide wheel 43 mechanism conveys the counted easy-open lid out of the device. Repeating steps S501-S505 can achieve continuous and accurate counting.

[0065] In step S503, the pressure of the pulsed high-pressure gas is 0.4-0.8MPa, the pulse frequency is 10-20Hz, and the pulse duration is 0.1-0.3s, ensuring that the gas thrust can both push the easy-open cover to move and overcome the elastic downward pressure of the spring 451 for a short time, pushing the cover block 45 in the opposite direction away from the easy-open cover.

[0066] The accurate counting method for easy-open lids also includes: after the photoelectric sensor 41 detects the easy-open lid, it sends a counting signal to the control system. The control system records the counting data in real time and issues an alarm when the counting data is abnormal, so that staff can troubleshoot the fault in a timely manner.

[0067] In this embodiment, an abnormal alarm can be implemented. The control system monitors the counting signal in real time. When "no counting for 2 consecutive seconds" occurs (possibly due to accumulation or conveying interruption) or "two counts within 1 second" occurs (possibly due to the cover being stuck), an audible and visual alarm is triggered, which facilitates staff to quickly troubleshoot the fault and reduces production line downtime.

[0068] Overall effect: Through intelligent linkage and alarm, the automation level and reliability of the device are improved, and the cost of manual monitoring is reduced.

[0069] In the application of this device in aluminum easy-open cover production lines (diameters 52mm, 56mm, and 60mm), based on the structure and parameters in the above embodiments, it can achieve a precise counting error rate of less than 0.1% and requires no manual intervention for separation, thus meeting the needs of high-speed production.

[0070] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A precise counting device for a pop-up lid, the edge of the pop-up lid being provided with an annular groove, characterized in that, The precise counting device of the pull-ring cap comprises a rack, a chute, a photoelectric sensor and a pressing cap assembly; the chute is fixed on the rack and used for bearing and conveying the pull-ring cap; the photoelectric sensor is installed above the chute and corresponds to the counting area and is used for detecting the passing pull-ring cap; The pressing cap assembly comprises a pressing cap, an optical shaft, a spring and a pulse gas source assembly; the optical shaft is vertically fixed on a mounting bracket, the pressing cap is provided with a through hole matched with the optical shaft, the pressing cap is sleeved on the optical shaft through the through hole and can slide up and down along the optical shaft; the spring is sleeved outside the optical shaft and abuts against the mounting bracket and the top of the pressing cap at both ends respectively and is used for providing the pressing cap with an elastic pressure downward so that the bottom of the pressing cap is attached to the top of the pull-ring cap and the elastic pressing cap is stable; The bottom of the pressing cap is provided with a directional separation jet hole which is inclined downward and faces the side of the photoelectric sensor and the position of the jet hole is in front of the feeding end of the photoelectric sensor; the pulse gas source assembly comprises a high-pressure gas source and a gas path pipeline, one end of the gas path pipeline is connected with the high-pressure gas source and the other end penetrates through the pressing cap and communicates with the directional separation jet hole and is used for conveying the pulse high-pressure gas to the jet hole; When the high-pressure gas conveyed by the pulse gas source assembly is sprayed from the directional separation jet hole, a pushing force towards the photoelectric sensor is applied to the pull-ring cap to be counted to push the pull-ring cap into the counting area one by one for counting; and the reaction force generated by the gas spraying drives the pressing cap to move upward along the optical shaft and the spring is compressed; when the pulse gas stops spraying, the reaction force disappears and the spring resets to push the pressing cap to move downward so as to knock the pull-ring cap at a certain frequency to separate the adjacent pull-ring caps.

2. The precise counting device for a popper cap according to claim 1, wherein The gas path pipeline of the pulse gas source assembly is provided with an electromagnetic valve which is electrically connected with the photoelectric sensor; when the photoelectric sensor detects that the previous pull-ring cap leaves the counting area, the electromagnetic valve controls the pulse gas source to spray the gas to realize the synchronous linkage of the gas spraying and the pull-ring cap conveying.

3. The popper accurate counting device of claim 1, wherein, Two pressing caps are included and the two pressing caps are symmetrically arranged, the diameter of the directional separation jet hole is 0.8-1.2 mm, the bottom of each pressing cap is provided with at least one directional separation jet hole, the directional separation jet holes correspond to the two sides of the center of the pull-ring cap, the distance between the center of the jet hole and the detection area of the photoelectric sensor is 5-8 mm to ensure that the gas pushing force is accurately applied to the pull-ring cap to be counted.

4. The precise counting device for a popper cap according to claim 1, wherein The stiffness coefficient of the spring is 5-8 N / mm and the pressure of the pressing cap to the pull-ring cap in the natural state is 10-15 N to ensure the stable conveying of the pull-ring cap and avoid that the pressure is too large to hinder the movement of the pull-ring cap.

5. The popper precision counting device of claim 1, wherein, The device further comprises an inlet guide wheel mechanism and an outlet guide wheel mechanism; The inlet guide wheel mechanism comprises two first guide wheels and a first driving motor, the two first guide wheels are symmetrically installed on the two sides of the chute, the wheel surface contacts with the side surface of the pull-ring cap, the first driving motor is in transmission connection with the first guide wheel and is used for driving the first guide wheel to rotate to convey the pull-ring cap to the direction of the pressing cap assembly; The outlet guide wheel mechanism comprises two second guide wheels and a second driving motor, the two second guide wheels are symmetrically installed on the two sides of the chute and are located behind the outlet end of the pressing cap assembly, the wheel surface contacts with the side surface of the pull-ring cap, the second driving motor is in transmission connection with the second guide wheel and is used for driving the second guide wheel to rotate to convey the counted pull-ring cap out of the counting area.

6. The precise counting device for a popper cap according to claim 5, wherein The wheel body material of the first guide wheel and the second guide wheel is polyurethane, the hardness is 60-70A, a ring-shaped groove is arranged in the middle of the wheel body, the width of the ring-shaped groove is 0.4mm, the depth is 0.5mm, the ring-shaped groove is attached to the side surface of the easy-to-pull cover, the friction is increased, and the easy-to-pull cover is prevented from being scratched.

7. A method of precisely counting a pop-up lid, implemented based on the pop-up lid precise counting device according to any one of claims 1 to 6, characterized in that, The method comprises the following steps: Elastic cover: the cover block is attached to the top of the easy-to-pull cover at the bottom under the elastic pressure of the spring, and the easy-to-pull cover is elastically pressed; Pushing cover and knocking separation: when the easy-to-pull cover is conveyed to below the directional separation nozzle, the pulse gas source assembly conveys pulse high-pressure gas to the nozzle, the gas is sprayed from the nozzle, and the easy-to-pull cover to be counted is pushed to move in the direction of the photoelectric sensor; at the same time, the reaction force of the gas jet drives the cover block to slide upward, and the spring is compressed; after the pulse gas stops, the spring resets and pushes the cover block to move downward, so that the easy-to-pull cover is knocked at a certain frequency, and the adjacent engaged easy-to-pull covers are separated; Precise counting: the single easy-to-pull cover pushed moves through the counting area of the photoelectric sensor, the photoelectric sensor detects the easy-to-pull cover and completes counting; Cyclic execution: the above steps are repeated to realize continuous and precise counting of the easy-to-pull cover one by one.

8. The method of claim 7, wherein, The pressure of the pulse high-pressure gas is 0.4-0.8MPa, the pulse frequency is 10-20Hz, and the pulse duration is 0.1-0.3s, so as to ensure that the gas thrust can not only push the easy-to-pull cover to move, but also overcome the elastic downward pressure of the spring for a short time, and reversely push the cover block to move away from the easy-to-pull cover.

9. The method of claim 7, wherein, After the photoelectric sensor detects the easy-to-pull cover, a counting signal is sent to the control system, the control system records the counting data in real time, and when the counting data is abnormal, an alarm prompt is sent, so that the staff can timely troubleshoot the fault.

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