Closed iron bucket anti-theft cover upper cover system and its upper cover method

Abstract

The application provides an upper cover system of a closed iron drum anti-theft cover and an upper cover method thereof. The upper cover system comprises a cover arranging machine, an alternate cover conveying machine, a negative pressure cover transfer mechanism, a follow-up negative pressure step cover positioning mechanism and a lifting cover locking mechanism. The alternate cover conveying machine is connected with the cover arranging machine. The cover arranging machine transfers the anti-theft cover to the alternate cover conveying machine. The negative pressure cover transfer mechanism is installed above the alternate cover conveying machine and is used for lifting the anti-theft cover and moving the anti-theft cover to the follow-up negative pressure step cover positioning mechanism. The follow-up negative pressure step cover positioning mechanism and the lifting cover locking mechanism are installed on a sliding table with XY direction movement in the main machine. The follow-up negative pressure step cover positioning mechanism places the anti-theft cover directly below the lifting cover locking mechanism, and the lifting cover locking mechanism picks up the anti-theft cover to the cover locking mechanism. The application greatly saves the main process time, has a simple and reliable structure, a compact mechanism layout, little influence on the original filling main machine and low cost.

Description

Technical Field

[0001] This invention relates to the field of liquid material filling in the chemical industry, and particularly to a capping system and method for a closed-top iron drum with an anti-theft cap. Background Technology

[0002] Currently, in the industrial sector, closed iron drums that meet national standards are often used for automated filling of liquid products. There are two types of filling: single drum filling and four-drum pallet filling. The drum lids of these packaging materials generally have an additional lock for anti-theft after being tightened.

[0003] In the main filling process of a tray-type automated filling line, key functions such as opening the cap, filling, tightening the cap, and locking the tamper-evident cap are required. Currently, because the equipment uses a tray to fill four containers together, all filling and cap-opening / tightening processes must be completed sequentially step by step, resulting in a relatively long filling and tightening process and generally low filling efficiency. Now, based on this model, the customer has added a requirement for locking the tamper-evident cap. Since the tamper-evident cap needs to be transferred from outside the equipment to the container surface and undergo four cap-picking and locking processes, the efficiency of the entire filling process will be further reduced. Therefore, a method is needed to minimize the main process time.

[0004] To minimize efficiency losses, manufacturers often break down the entire process into multiple workstations. Specifically, this involves adding a tamper-evident cap locking station after the main filling unit. This station includes the main frame, protective measures, a vision system, a servo positioning slide system, a cap feeding system, a cap retrieval system, a cap locking system, a tray conveyor, and a control system, forming a complete station to implement the tamper-evident cap locking function. This method significantly increases the overall cost of the equipment, greatly reducing the product's cost-effectiveness. Equipment implemented using this approach suffers from drawbacks such as large footprint, complex control systems, and high costs.

[0005] In view of this, the applicant of this invention has designed a lid system and a lid-applying method for a closed iron barrel anti-theft lid, in order to overcome the above-mentioned technical problems. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of existing cover systems that implement the lock and anti-theft cover function, such as high cost, large footprint, and complex control system. The present invention provides a cover system and cover method for a closed iron barrel anti-theft cover.

[0007] The present invention solves the above-mentioned technical problems through the following technical solution:

[0008] A lid system for a closed-top iron drum anti-theft lid is characterized in that the lid system includes a lid sorting machine, an alternating lid conveyor, a negative pressure lid transfer mechanism, a follow-up negative pressure stepping lid positioning mechanism, and a lifting lid locking mechanism. The alternating lid conveyor is connected to the lid sorting machine, and the lid sorting machine transfers the anti-theft lid onto the alternating lid conveyor. The negative pressure lid transfer mechanism is installed above the alternating lid conveyor and is used to lift the anti-theft lid and move it to the follow-up negative pressure stepping lid positioning mechanism.

[0009] The follow-up negative pressure stepping cover positioning mechanism and the lifting cover locking mechanism are installed on a slide table with XY direction movement inside the main unit. The follow-up negative pressure stepping cover positioning mechanism places the anti-theft cover directly below the lifting cover locking mechanism, and the lifting cover locking mechanism picks up the anti-theft cover into the cover locking device.

[0010] According to one embodiment of the present invention, the alternating cover conveyor includes a belt conveyor, a support, a plurality of individually controllable cylinders and a plurality of stop levers. The belt conveyor is fixed on the frame of the main machine, the support is fixed on the side of the belt conveyor, the cylinders are fixed vertically downward on the support, and the stop levers are respectively fixed on the corresponding cylinders.

[0011] According to one embodiment of the present invention, the negative pressure cap transfer mechanism includes a plurality of negative pressure suction cups, a suction cup bracket, a lifting guide cylinder, a first horizontal guide cylinder, and a cylinder fixing bracket. The cylinder fixing bracket is fixed on the alternating cap conveyor, the lifting guide cylinder is fixed on the cylinder fixing bracket, the first horizontal guide cylinder is fixed on the lifting guide cylinder, the suction cup bracket is horizontally fixed on the first horizontal guide cylinder, and the negative pressure suction cups are fixed on the suction cup bracket at equal intervals.

[0012] According to one embodiment of the present invention, the follow-up negative pressure stepping cap positioning mechanism includes:

[0013] A back plate and a first bracket, wherein the back plate is fixed to the slide table of the main unit and the first bracket is fixed to the back plate;

[0014] The system comprises a second horizontal guide cylinder, a vertical guide cylinder, and a first mounting plate. The second horizontal guide cylinder is fixed on the first bracket, and the vertical guide cylinder is fixed on the second horizontal guide cylinder via the first mounting plate.

[0015] The system includes multiple suction cups, a second mounting plate, and a positioning bracket. The suction cups are fixed to the vertical guide cylinder via the second mounting plate. The positioning bracket is located below the suction cups and is fixed to the back plate.

[0016] Multiple cover positioning plates are fixed on the positioning bracket, located below the suction cup, and the cover positioning plates are aligned with the suction cup.

[0017] The device includes a swing positioning plate, a second bracket, and a swing cylinder. The swing positioning plate is fixed to the back plate by the second bracket. The swing positioning plate is connected to the swing cylinder, and the swing positioning plate swings along the axis under the drive of the swing cylinder.

[0018] According to one embodiment of the present invention, the swing positioning plate is provided with another cover positioning plate.

[0019] According to one embodiment of the present invention, the positioning bracket is fixed and the swing positioning plate is rotatable. In the standby state, the positioning bracket and the swing positioning plate are aligned side by side in a line and are equally spaced from each other.

[0020] According to one embodiment of the present invention, the lifting cover mechanism includes a pad, a guide rail, a cover mounting bracket, a lifting drive cylinder, and a cover lock. The pad is fixed to the back plate, the guide rail is fixed to the pad, the lifting drive cylinder is fixed to the pad, the cover mounting bracket is locked to the slider of the guide rail, and the cover lock is fixed to the cover mounting bracket. The lifting drive cylinder enables the cover lock to move up and down.

[0021] According to one embodiment of the present invention, the lifting drive cylinder is fixed to the pad by a support bracket.

[0022] This invention also provides a method for attaching a tamper-evident lid to a closed-top iron drum, characterized in that the method employs the tamper-evident lid system described above, and the method includes the following steps:

[0023] S1. The anti-theft cover is taken out of the box by the cover sorting machine and transported to the main unit in sequence, and then transferred to the alternating cover conveyor.

[0024] S2. The negative pressure cap transfer mechanism extracts the anti-theft cap and moves it to the positioning bracket of the follow-up negative pressure stepping cap delivery and positioning mechanism.

[0025] S3. The lifting cover mechanism picks up the anti-theft cover and places it into the cover lock;

[0026] S4. Under the control of the main program, the host sequentially performs the actions of opening, filling, and tightening the anti-theft cap.

[0027] According to an embodiment of the present invention, the step S1 is followed by the following step:

[0028] S11 The alternating cover conveyor is started, conveying the anti-theft cover toward the cover holder;

[0029] S 12 Multiple equally spaced cylinders descend sequentially, blocking multiple anti-theft covers via levers installed at the lower end of the cylinders, with the anti-theft covers stopping on the same side of the blocking cover.

[0030] According to an embodiment of the present invention, step S2 further includes the following steps:

[0031] S 21 Multiple suction cups of the negative pressure cap transfer mechanism wait above multiple anti-theft caps. When the anti-theft cap is delivered to the position, the suction cups start working under negative pressure. The vertically set lifting guide cylinder drives the suction cups to descend, suck up the anti-theft cap, and then rise.

[0032] S 22 A horizontally set first horizontal guide cylinder drives the suction cup and the anti-theft cover to move laterally to the positioning bracket of the follow-up negative pressure stepping cover delivery and positioning mechanism;

[0033] S 23 The vertical guide cylinder descends and places the anti-theft cover on the suction cup onto the positioning bracket. At this time, the negative pressure of the suction cup is closed, and the cover stays on the positioning bracket. Finally, the suction cup is raised, and the cover transfer mechanism returns to the initial waiting position.

[0034] S 24 The swing positioning plate is swung to the position directly below the lifting and locking cover mechanism under the drive of the swing cylinder.

[0035] According to an embodiment of the present invention, after step S3, the method further includes: the swing positioning plate rotates back to the waiting position, and then the suction cup installed above the positioning bracket immediately begins to lift and move forward, moving the corresponding anti-theft cover forward one step. At this time, another anti-theft cover is in the waiting state on the swing positioning plate.

[0036] According to an embodiment of the present invention, step S4 further includes: S 41 When there is already an anti-theft cap inside the cap locker, the main program controls the cap locker to descend to the top of the bucket and lock the anti-theft cap onto the bucket opening; finally, the cap locker is raised, thus completing the entire process of opening, filling, tightening, and locking the anti-theft cap of the first bucket.

[0037] According to an embodiment of the present invention, step S4 further includes:

[0038] S 42 Move the slide of the main unit to the next barrel opening to continue the actions of opening the lid, filling, and tightening the lid;

[0039] S43 Once the lid is tightened, the program drives the slide to move and align the lid lock with the bucket opening to lock the anti-theft lid again.

[0040] According to an embodiment of the present invention, step S 42 Specifically, the process includes: the second anti-theft cover in the waiting state located on the follow-up negative pressure stepping cover positioning mechanism swings to below the cover lock under the drive of the swing cylinder, the cover lock moves up and down to pick up the next anti-theft cover, and waits for the main process of tightening the cover to end.

[0041] According to an embodiment of the present invention, step S4 further includes:

[0042] S 43 Repeat the above steps S in a loop. 42 and step S 43 Then, lock all the anti-theft covers in sequence;

[0043] S 44 After all the anti-theft covers are locked, the anti-theft covers on the follow-up negative pressure stepping cover feeding and positioning mechanism are used up, and the slide table moves to the side of the alternating cover conveyor to pick up the second batch of anti-theft covers.

[0044] The positive and progressive effects of this invention are as follows:

[0045] This invention relates to a capping system and method for anti-theft caps on closed-top iron drums. It employs a completely new capping system within the existing main unit. This system can transport the anti-theft cap from outside the equipment to the drum surface without affecting the main process, avoiding the need for the main unit's sliding mechanism to repeatedly pick up caps one by one. This mechanism significantly saves main process time, is simple and reliable in structure, has a compact layout, minimal impact on the original filling main unit, low cost, and is easy to maintain. Attached Figure Description

[0046] The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features, wherein:

[0047] Figure 1 This is a schematic diagram of the installation of the top cover system of the closed iron drum anti-theft cover of the present invention.

[0048] Figure 2 This is a perspective view of the top cover system of the closed iron drum anti-theft lid of the present invention.

[0049] Figure 3 This is a schematic diagram of the alternating cover conveyor in the upper cover system of the closed iron drum anti-theft cover of the present invention.

[0050] Figure 4This is a schematic diagram of the negative pressure lid transfer mechanism in the upper lid system of the closed iron barrel anti-theft lid of the present invention.

[0051] Figure 5 This is a schematic diagram of the follow-up negative pressure stepping lid positioning mechanism in the lid system of the closed iron barrel anti-theft lid of the present invention.

[0052] Figure 6 This is a schematic diagram of the follow-up negative pressure stepping lid positioning mechanism in the lid system of the closed iron barrel anti-theft lid of the present invention.

[0053] Figure 7 This is a schematic diagram of the assembly of the follow-up negative pressure stepping lid positioning mechanism and the lifting lid locking mechanism in the lid system of the closed iron barrel anti-theft lid of the present invention. Detailed Implementation

[0054] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0055] Embodiments of the invention will now be described in detail with reference to the accompanying drawings. Preferred embodiments of the invention will now be described in detail, examples of which are shown in the drawings. Wherever possible, the same reference numerals will be used in all the drawings to denote the same or similar parts.

[0056] Furthermore, although the terminology used in this invention is selected from commonly known and used terms, some terms mentioned in this specification may have been selected by the applicant in his or her judgment, and their detailed meanings are explained in the relevant sections of the description herein.

[0057] Furthermore, the invention should be understood not only through the actual terminology used, but also through the meaning implied by each term.

[0058] like Figures 1 to 7 As shown, this invention discloses a lid system A for a closed iron drum anti-theft lid, which includes a lid sorting machine 10, an alternating lid conveyor 20, a negative pressure lid transfer mechanism 30, a follow-up negative pressure stepping lid positioning mechanism 40, and a lifting lid locking mechanism 50. The alternating lid conveyor 20 is connected to the lid sorting machine 10, and the lid sorting machine 10 transfers the anti-theft lid 60 onto the alternating lid conveyor 20. The negative pressure lid transfer mechanism 30 is installed above the alternating lid conveyor 20 and is used to lift the anti-theft lid 60 and move it to the follow-up negative pressure stepping lid positioning mechanism 40. The follow-up negative pressure stepping cover positioning mechanism 40 and the lifting cover locking mechanism 50 are installed on the slide table with XY direction movement inside the main unit 100. The follow-up negative pressure stepping cover positioning mechanism 40 places the anti-theft cover 60 directly below the lifting cover locking mechanism 50, and the lifting cover locking mechanism 50 picks up the anti-theft cover 60 into the cover locking device 70.

[0059] Preferably, the alternating cover conveyor 20 includes a belt conveyor 21, a support 22, multiple individually controllable cylinders 23, and multiple stop levers 24. The belt conveyor 21 is fixed to the frame of the main unit 100, the support 22 is fixed to the side of the belt conveyor 21, the cylinders 23 are fixed vertically downward on the support 22, and the stop levers 24 are respectively fixed to the corresponding cylinders 23. For example, in this embodiment, four individually controllable cylinders 23 and eight stop levers 24 are used, with the eight stop levers 24 respectively fixed to the four cylinders 23.

[0060] Preferably, the negative pressure cap transfer mechanism 30 includes multiple negative pressure suction cups 31, a suction cup bracket 32, a lifting guide cylinder 33, a first horizontal guide cylinder 34, and a cylinder fixing bracket 35. The cylinder fixing bracket 35 is fixed on the alternating cap conveyor 20, the lifting guide cylinder 33 is fixed on the cylinder fixing bracket 35, the first horizontal guide cylinder 34 is fixed on the lifting guide cylinder 33, the suction cup bracket 32 ​​is horizontally fixed on the first horizontal guide cylinder 34, and the negative pressure suction cups 31 are fixed to the suction cup bracket 32 ​​at equal intervals. For example, in this embodiment, four negative pressure suction cups are used, and the four negative pressure suction cups are fixed in four equally spaced holes on the suction cup bracket 32.

[0061] Preferably, the follow-up negative pressure stepping cap positioning mechanism 40 includes a back plate 41, a first bracket 42, a second horizontal guide cylinder 43, a vertical guide cylinder 44, a first mounting plate 45, multiple suction cups 46, a second mounting plate 47, a positioning bracket 48, multiple cap positioning plates 49, a swing positioning plate 401, a second bracket 402, and a swing cylinder 403. The back plate 41 is fixed to the slide of the main unit 100, and the first bracket 42 is fixed to the back plate 41. The second horizontal guide cylinder 43 is fixed to the first bracket 42, and the vertical guide cylinder 44 is fixed to the second horizontal guide cylinder 43 via the first mounting plate 45. The suction cups 46 are fixed to the vertical guide cylinders 44 via the second mounting plate 47, and the positioning bracket 48 is located below the suction cups 46 and fixed to the back plate 41.

[0062] For example, this embodiment uses three fixed positioning brackets, one rotatable positioning bracket, and four negative pressure suction cups. The four negative pressure suction cups are fixed to the vertical guide cylinder by the second mounting plate, and the positioning bracket located below the negative pressure suction cups is fixed to the back plate.

[0063] The cover positioning plate 49 is fixed on the positioning bracket 48, located below the suction cup 46, and the cover positioning plate 49 and the suction cup 46 are aligned with each other. The swing positioning plate 401 is fixed on the back plate 41 by the second bracket 402, and the swing positioning plate 401 is connected to the swing cylinder 403. The swing positioning plate 401 swings along the axis under the drive of the swing cylinder 403. For example, three cover positioning plates are used in this embodiment.

[0064] Furthermore, another cover positioning plate 411 is also provided on the swing positioning plate 401. The positioning bracket 48 is preferably fixed, and the swing positioning plate 401 is preferably rotatable. In the standby state, the positioning bracket 48 and the swing positioning plate 401 are aligned side by side in a line and are equally spaced from each other.

[0065] Preferably, the lifting cap locking mechanism 50 is fixed on the back plate 41 and is adjacent to the follow-up negative pressure stepping cap feeding and positioning mechanism 40. The lifting cap locking mechanism 50 includes a pad 51, a guide rail 52, a cap locking bracket 53, a lifting drive cylinder 54, and a cap locking device 55. The pad 51 is fixed on the back plate 41, the guide rail 52 is fixed on the pad 51, the lifting drive cylinder 54 is fixed on the pad 51, the cap locking bracket 53 is locked on the slider of the guide rail 52, and the cap locking device 55 is fixed on the cap locking bracket 53. The lifting drive cylinder 54 realizes the up and down movement of the cap locking device 55.

[0066] Furthermore, the lifting drive cylinder 54 is fixed to the pad 51 by a support bracket.

[0067] According to the above structural description, the upper cover system of the closed-top iron drum anti-theft cap of the present invention mounts the follow-up negative pressure stepping cap feeding and positioning mechanism and the lifting cap locking mechanism on a servo slide table with XY direction movement inside the main unit. The four components, namely the follow-up negative pressure stepping cap feeding and positioning mechanism, the lifting cap locking mechanism, the filling spray gun, and the capping robot, are mounted on the same vertically designed slide table support and can move together under program control. The slide table components can travel to the mouths of the four drums on the tray to perform filling, tightening and loosening of the caps, and locking of the anti-theft caps.

[0068] The present invention also provides a method for attaching a tamper-evident lid to a closed-top iron drum, which employs the tamper-evident lid system for a closed-top iron drum as described above. The method includes the following steps:

[0069] Step S1: The cover sorting machine takes the anti-theft cover out of the box and transports it to the main unit in sequence, transferring it to the alternating cover conveyor.

[0070] The following steps are included after step S1:

[0071] Step S 11 The alternating cover conveyor starts and transports the anti-theft cover toward the cover holder.

[0072] Step S 12 Multiple equally spaced cylinders descend sequentially, blocking multiple anti-theft covers via levers installed at the lower end of the cylinders, with the anti-theft covers stopping on the same side of the blocking cover.

[0073] Step S2: The negative pressure cap transfer mechanism extracts the anti-theft cap and moves it to the positioning bracket of the follow-up negative pressure stepping cap delivery and positioning mechanism.

[0074] Preferably, step S2 further includes the following steps:

[0075] Step S 21 Multiple suction cups of the negative pressure cap transfer mechanism wait above multiple anti-theft caps. When the anti-theft cap is delivered to the position, the suction cups start working under negative pressure. The vertically set lifting guide cylinder drives the suction cups to descend, suck up the anti-theft cap, and then rise.

[0076] Step S 22 A horizontally positioned first horizontal guide cylinder drives the suction cup and the anti-theft cover to move laterally to the positioning bracket of the follow-up negative pressure stepping cover delivery and positioning mechanism.

[0077] Step S 23 The vertical guide cylinder descends and places the anti-theft cover on the suction cup onto the positioning bracket. At this time, the negative pressure of the suction cup is closed, and the cover stays on the positioning bracket. Finally, the suction cup is raised, and the cover transfer mechanism returns to the initial waiting position.

[0078] Since the three fixed cover positioning brackets and the rotating cover positioning bracket are aligned side by side in a line and are equally spaced in the standby state, an anti-theft cover has already been obtained on the swing cover positioning bracket at this time.

[0079] Step S 24 The swing positioning plate is swung to the position directly below the lifting and locking cover mechanism under the drive of the swing cylinder.

[0080] Step S3: The lifting and locking mechanism picks up the anti-theft cover into the locking device.

[0081] Preferably, after step S3, the method further includes: the swing positioning plate rotates back to the waiting position, and then the suction cup installed above the positioning bracket immediately begins to lift and move forward, moving the corresponding anti-theft cover forward one step. At this time, another anti-theft cover is in the waiting state on the swing positioning plate.

[0082] Specifically, the three negative pressure suction cups installed above the positioning bracket immediately begin to open the negative pressure and then descend onto the four anti-theft covers that have been waiting. After the lifting cylinder is raised, the translation cylinder moves horizontally, moving the three anti-theft covers forward one step. The lifting cylinder descends to the position and closes the suction cup negative pressure, and the cover stops on the positioning bracket. At this time, another anti-theft cover is waiting on the swing cover positioning bracket.

[0083] Step S4: Under the control of the main program, the host sequentially performs the actions of opening, filling, and tightening the anti-theft cap.

[0084] Preferably, step S4 further includes: S 41 When there is already an anti-theft cap inside the cap locker, the main program controls the cap locker to descend to the top of the bucket and lock the anti-theft cap onto the bucket opening; finally, the cap locker is raised, thus completing the entire process of opening, filling, tightening, and locking the anti-theft cap of the first bucket.

[0085] Specifically, under the control of the main program, the main unit drives the slide and three components to perform the actions of opening, filling, and tightening the cap on the first bucket. At this time, since the entire process of delivering the anti-theft cap is synchronized with the main unit's filling and tightening processes, it does not occupy the main process time. Since there is already an anti-theft cap inside the cap lock, the main program controls the cap lock to descend to the bucket opening and lock the anti-theft cap onto the opening. Finally, the cap lock is raised, thus completing the entire process of opening, filling, tightening, and locking the anti-theft cap on the first bucket.

[0086] Furthermore, step S4 also includes:

[0087] S 42 Move the slide of the main unit to the next barrel opening to continue the actions of opening the lid, filling, and tightening the lid.

[0088] S 43 Once the lid is tightened, the program drives the slide to move and align the lid lock with the bucket opening to lock the anti-theft lid again.

[0089] Wherein, step S 42 The process also preferably includes: the second anti-theft cover in the waiting state located on the follow-up negative pressure stepping cover positioning mechanism swings to below the cover lock under the drive of the swing cylinder, the cover lock moves up and down to pick up the next anti-theft cover, and waits for the main process of tightening the cover to end.

[0090] Specifically, the slide moves to the second barrel opening to continue the opening, filling, and tightening actions. During these actions, the second anti-theft cap in the waiting state of the follow-up negative pressure stepping cap feeding and positioning mechanism swings under the cap locking device driven by the swing cylinder. The cap locking device moves up and down to pick up the next anti-theft cap and waits for the main tightening action to finish. Once tightening is complete, the program drives the slide to move and align the cap locking device with the barrel opening to lock the anti-theft cap again.

[0091] Furthermore, step S4 preferably also includes:

[0092] S 43 Repeat the above steps S in a loop. 42 and step S 43 Then, lock all the anti-theft covers in sequence.

[0093] S 44After all the anti-theft covers are locked, the anti-theft covers on the follow-up negative pressure stepping cover feeding and positioning mechanism are used up, and the slide table moves to the side of the alternating cover conveyor to pick up the second batch of anti-theft covers.

[0094] In this embodiment, after completing all the actions of opening, filling, tightening, and locking the anti-theft caps on the four buckets, the main unit conveys the buckets off the pallet, and the next pallet of four buckets is conveyed into the main unit. Simultaneously, the slide table uses this downtime to drive the follow-up negative pressure stepping cap feeding and positioning mechanism to retrieve four anti-theft caps from the alternating cap conveyor according to the aforementioned process. This allows the process of opening, filling, tightening, and locking the anti-theft caps on the next four buckets to begin again.

[0095] In summary, the anti-theft cap system and method for closed-top iron drums of this invention employ a completely new capping system within the original main unit. This system can transport the anti-theft cap from outside the equipment to the drum surface without affecting the main process, avoiding the process of the main unit's sliding mechanism repeatedly picking up the caps one by one. This mechanism significantly saves main process time, has a simple and reliable structure, a compact layout, minimal impact on the original filling main unit, low cost, and convenient maintenance.

[0096] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A lid system for a closed-top iron drum anti-theft lid, characterized in that, The anti-theft lid system of the closed iron drum includes a lid sorting machine, an alternating lid conveyor, a negative pressure lid transfer mechanism, a follow-up negative pressure stepping lid positioning mechanism, and a lifting and locking lid mechanism. The alternating lid conveyor is connected to the lid sorting machine, which transfers the anti-theft lid onto the alternating lid conveyor. The negative pressure lid transfer mechanism is installed above the alternating lid conveyor and is used to lift the anti-theft lid and move it to the follow-up negative pressure stepping lid positioning mechanism. The follow-up negative pressure stepping cover positioning mechanism and the lifting cover locking mechanism are installed on a slide table with XY direction movement inside the main unit. The follow-up negative pressure stepping cover positioning mechanism places the anti-theft cover directly below the lifting cover locking mechanism, and the lifting cover locking mechanism picks up the anti-theft cover into the cover locking device. The negative pressure cap transfer mechanism includes multiple negative pressure suction cups, a suction cup bracket, a lifting guide cylinder, a first horizontal guide cylinder, and a cylinder fixing bracket. The cylinder fixing bracket is fixed on the alternating cap conveyor, the lifting guide cylinder is fixed on the cylinder fixing bracket, the first horizontal guide cylinder is fixed on the lifting guide cylinder, the suction cup bracket is horizontally fixed on the first horizontal guide cylinder, and the negative pressure suction cups are fixed on the suction cup bracket at equal intervals. The follow-up negative pressure stepping cap feeding and positioning mechanism includes: A back plate and a first bracket, wherein the back plate is fixed to the slide table of the main unit and the first bracket is fixed to the back plate; The system comprises a second horizontal guide cylinder, a vertical guide cylinder, and a first mounting plate. The second horizontal guide cylinder is fixed on the first bracket, and the vertical guide cylinder is fixed on the second horizontal guide cylinder via the first mounting plate. The system includes multiple suction cups, a second mounting plate, and a positioning bracket. The suction cups are fixed to the vertical guide cylinder via the second mounting plate. The positioning bracket is located below the suction cups and is fixed to the back plate. Multiple cover positioning plates are fixed on the positioning bracket, located below the suction cup, and the cover positioning plates are aligned with the suction cup. The device includes a swing positioning plate, a second bracket, and a swing cylinder. The swing positioning plate is fixed to the back plate by the second bracket. The swing positioning plate is connected to the swing cylinder, and the swing positioning plate swings along the axis under the drive of the swing cylinder.

2. The cover system for the anti-theft lid of a closed iron drum as described in claim 1, characterized in that, The alternating cover conveyor includes a belt conveyor, a support frame, multiple individually controllable cylinders, and multiple stop levers. The belt conveyor is fixed on the frame of the main unit, the support frame is fixed on the side of the belt conveyor, the cylinders are fixed vertically downward on the support frame, and the stop levers are respectively fixed on the corresponding cylinders.

3. The cover system for the anti-theft lid of a closed iron drum as described in claim 1, characterized in that, Another cover positioning plate is provided on the swing positioning plate.

4. The cover system for the anti-theft lid of a closed iron drum as described in claim 3, characterized in that, The positioning bracket is fixed, and the swing positioning plate is rotatable. In the standby state, the positioning bracket and the swing positioning plate are aligned side by side in a line and are equally spaced from each other.

5. The cover system for the anti-theft lid of a closed iron drum as described in claim 1, characterized in that, The lifting and locking mechanism includes a pad, a guide rail, a locking device mounting bracket, a lifting drive cylinder, and a locking device. The pad is fixed to the back plate, the guide rail is fixed to the pad, the lifting drive cylinder is fixed to the pad, the locking device mounting bracket is locked to the slider of the guide rail, and the locking device is fixed to the locking device mounting bracket. The lifting drive cylinder enables the locking device to move up and down.

6. The cover system for the anti-theft lid of a closed iron drum as described in claim 5, characterized in that, The lifting drive cylinder is fixed to the pad by a support bracket.

7. A method for attaching a tamper-evident lid to a closed iron drum, characterized in that, The method for attaching the anti-theft lid to the closed iron drum adopts the anti-theft lid system for closed iron drums as described in any one of claims 1-6, and the method includes the following steps: S1. The anti-theft cover is taken out of the box by the cover sorting machine and transported to the main unit in sequence, and then transferred to the alternating cover conveyor. S2. The negative pressure cap transfer mechanism extracts the anti-theft cap and moves it to the positioning bracket of the follow-up negative pressure stepping cap delivery and positioning mechanism. S3. The lifting cover mechanism picks up the anti-theft cover and places it into the cover lock; S4. Under the control of the main program, the host sequentially performs the actions of opening, filling, and tightening the anti-theft cap.

8. The method for attaching the anti-theft lid to a closed iron drum as described in claim 7, characterized in that, The following steps are included after step S1: S 11 The alternating cover conveyor is started, conveying the anti-theft cover toward the cover holder; S 12 Multiple equally spaced cylinders descend sequentially, blocking multiple anti-theft covers via levers installed at the lower end of the cylinders, with the anti-theft covers stopping on the same side of the blocking cover.

9. The method for attaching the anti-theft lid to a closed iron drum as described in claim 7, characterized in that, Step S2 further includes the following steps: S 21 Multiple suction cups of the negative pressure cap transfer mechanism wait above multiple anti-theft caps. When the anti-theft cap is delivered to the position, the suction cups start working under negative pressure. The vertically set lifting guide cylinder drives the suction cups to descend, suck up the anti-theft cap, and then rise. S 22 A horizontally set first horizontal guide cylinder drives the suction cup and the anti-theft cover to move laterally to the positioning bracket of the follow-up negative pressure stepping cover delivery and positioning mechanism; S 23 The vertical guide cylinder descends and places the anti-theft cover on the suction cup onto the positioning bracket. At this time, the negative pressure of the suction cup is closed, and the cover stays on the positioning bracket. Finally, the suction cup is raised, and the cover transfer mechanism returns to the initial waiting position. S 24 The swing positioning plate is swung to the position directly below the lifting and locking cover mechanism under the drive of the swing cylinder.

10. The method for attaching the anti-theft lid to a closed iron drum as described in claim 9, characterized in that, After step S3, the method further includes: the swing positioning plate rotates back to the waiting position, and then the suction cup installed on the positioning bracket immediately begins to lift and move forward, moving the corresponding anti-theft cover forward one step. At this time, another anti-theft cover is in the waiting state on the swing positioning plate.

11. The method for attaching the anti-theft lid to a closed iron drum as described in claim 7, characterized in that, Step S4 further includes: S 41 When there is already an anti-theft cap inside the cap locker, the main program controls the cap locker to descend to the top of the bucket and lock the anti-theft cap onto the bucket opening; finally, the cap locker is raised, thus completing the entire process of opening, filling, tightening, and locking the anti-theft cap of the first bucket.

12. The method for attaching the anti-theft lid to a closed iron drum as described in claim 11, characterized in that, Step S4 also includes: S 42 Move the slide of the main unit to the next barrel opening and continue the opening, filling, and sealing actions; S 43 Once the lid is tightened, the main program drives the slide to move and align the lid lock with the bucket opening to lock the anti-theft lid again.

13. The method for attaching the anti-theft lid to a closed iron drum as described in claim 12, characterized in that, Step S 42 Specifically, the process includes: the second anti-theft cover in the waiting state located on the follow-up negative pressure stepping cover positioning mechanism swings to below the cover lock under the drive of the swing cylinder, the cover lock moves up and down to pick up the next anti-theft cover, and waits for the main process of tightening the cover to end.

14. The method for attaching the anti-theft lid to a closed iron drum as described in claim 13, characterized in that, Step S4 also includes: S 43 Repeat the above steps S in a loop. 42 and step S 43 Then, lock all the anti-theft covers in sequence; S 44 After all the anti-theft covers are locked, the anti-theft covers on the follow-up negative pressure stepping cover feeding and positioning mechanism are used up, and the slide table moves to the side of the alternating cover conveyor to pick up the second batch of anti-theft covers.

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