A precision positioning capping device

Abstract

A precise positioning capping device comprises a frame, a cup conveying mechanism, a cap storage mechanism, a cap taking and placing mechanism, a cup lifting mechanism and a cup holding mechanism. The bottom of the cap storage mechanism is provided with at least one cap outlet. The cup lifting mechanism comprises a cup lifting plate and a cup lifting plate lifting mechanism. The cup conveying mechanism is provided with a plurality of cup hanging plates, each of which is provided with at least one cup accommodating hole. The cup holding mechanism comprises two cup holding plates, a first opening and closing control device for driving the two cup holding plates to move towards or away from each other, and at least one arc-shaped notch is arranged on the part where the two cup holding plates are close to each other, and the two arc-shaped notches opposite to each other enclose a cup clamping opening. The cap taking and placing mechanism comprises at least one cap taking and placing assembly, which is arranged between the corresponding cap outlet and the cup clamping opening. The precise positioning capping device can not only realize precise capping, but also be suitable for capping operation of different specifications of cups, thereby improving the quality and efficiency of packaging production.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment technology, and more specifically to a precision positioning capping device. Background Technology

[0002] In mass production lines for cup packaging, the cup capping process is one of the core steps, directly determining the integrity, sealing, and appearance quality of the product packaging. To replace traditional manual cap placement, improve production automation, reduce labor costs, and avoid the errors and inefficiencies caused by manual operation, various automatic cap placement devices are widely used in mass production lines for cup packaging.

[0003] Existing automatic lid-laying devices, such as the Chinese invention patent with publication number "CN106241688A" and invention title "Automatic Lid-laying Device," can basically realize the automatic dispensing, single lid picking, and transfer and placement of stacked cup lids to the cup body and rim, initially meeting the basic automation requirements for large-scale production. However, such automatic lid-laying devices have a simple design for the alignment and positioning structure of the cup body and lid, resulting in poor lid-laying accuracy. In high-speed assembly line operations, problems such as dynamic displacement deviation, cup body conveying positioning error, and cup lid separation offset during lid picking, moving, and placing cannot be effectively avoided. In particular, when using a chain or synchronous belt as the transmission mechanism for cup body conveying, the chain or synchronous belt will become loose after a period of use, causing the cup body to shift back and forth when it is conveyed to the correct position. This can easily lead to the cup lid not being accurately aligned and fitting into the preset position of the cup body and rim, resulting in poor lid-laying problems such as lid offset, tilting, one-sided suspension, and misalignment, which seriously affect the overall packaging production quality and production stability. In addition, the automatic lid-laying devices on the market are all custom-designed structures. The dimensions and structural parameters of their core working components, such as the lid-pressing mold, lid-removing clamp, and limit positioning components, are fixed. They can only be adapted to a single fixed specification of cup body and lid to complete the lid-laying operation and cannot be compatible with the production of cup bodies of multiple specifications. When the production line needs to switch to the production of cup products with different diameters and sizes, the machine must be stopped to replace the appropriate lid-pressing mold, limit accessories, clamping components and other exclusive accessories. At the same time, the equipment alignment parameters, running stroke and other parameters need to be readjusted, resulting in poor production adaptability and practicality. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide a precise positioning capping device. This device not only enables precise cap placement but is also applicable to capping operations for cups of different sizes, thereby improving packaging production quality and work efficiency. The technical solution adopted is as follows: A precision positioning capping device includes a frame, a cup conveying mechanism, a cap storage mechanism, and a cap picking and placing mechanism. The cap storage mechanism, cup conveying mechanism, and cap picking and placing mechanism are all mounted on the frame, and the cap storage mechanism has at least one cap outlet at its bottom. The device further includes a cup-lifting mechanism and a cup-holding mechanism. The cup-lifting mechanism includes a cup-lifting plate and a cup-lifting mechanism for driving the cup-lifting plate to move up and down. The cup-lifting mechanism is mounted on the frame, and the cup-lifting plate is positioned below the cup conveying mechanism and directly below the cap storage mechanism. The cup conveying mechanism has multiple hanging devices arranged sequentially from front to back along its running direction. The cup plate has at least one cup receiving hole for inserting a cup. The cup holding mechanism is located between the top cup mechanism and the lid storage mechanism. The cup holding mechanism includes two cup holding plates arranged symmetrically front and back, and a first opening and closing control device for driving the two cup holding plates to move towards or away from each other. The first opening and closing control device is mounted on the frame. At least one arc-shaped notch is provided on the part of the two cup holding plates that are close to each other. The two arc-shaped notches on the two cup holding plates that are opposite each other together form a cup holding port for clamping the cup. The lid picking and placing mechanism includes at least one lid picking and placing assembly, which is located between the corresponding lid outlet and the cup holding port.

[0005] The aforementioned cup conveying mechanism generally includes two conveyor chains or synchronous belts arranged side by side, driven by a motor. Along the length direction, multiple cup hanging plates are arranged sequentially from front to back between the two conveyor chains or synchronous belts. Each cup hanging plate has at least one cup receiving hole arranged from left to right, which is used to place a cup with its mouth sealed.

[0006] During operation, the lid storage mechanism stores stacked lids and delivers them one by one to each lid outlet. After conveying a group of cups to the lid placement station, the cup conveying mechanism pauses its movement. The lifting mechanism of the top cup plate then raises the top cup plate, which contacts and lifts the bottom of a group of cups on the hanging plate at the lid placement station, raising the group of cups between the two cup-holding plates of the cup-holding mechanism. Subsequently, the first opening and closing control device drives the two cup-holding plates to move towards each other. At this time, the two arc-shaped notches on the two cup-holding plates, positioned opposite each other, together form a cup-holding opening to clamp the corresponding cups in the group, achieving complete alignment of the cups' positions. The cups are positioned at the center of the lid placement station. Then, the lid-picking and placing mechanism removes the lids from the corresponding lid outlets of the lid storage mechanism through each lid-picking and placing component, and then transfers them to the top of the corresponding cups in the group, ensuring that the lids accurately cover the top of the cups. Subsequently, the first opening and closing control device drives the two cup-holding plates to move in opposite directions, releasing the group of cups. Then, the top cup plate lifting mechanism drives the top cup plate to descend, so that each cup in the group falls back into the corresponding cup receiving hole on the cup hanging plate. The cup conveying mechanism continues to transport the next group of cups to the lid placement station, while the lid-picking and placing mechanism resets, ready to place the lids on the next group of cups. This precision positioning capping device features a cup-hanging plate with cup-accommodating holes on the cup conveying mechanism, and a cup-lifting mechanism and a cup-holding mechanism at the capping station. The cup conveying mechanism delivers a set of cups to the capping station, the cup-lifting mechanism freely lifts the set of cups from below the conveying mechanism, and then the cup-holding mechanism clamps the set of cups in the middle to calibrate their position. Since the freely lifted cups can move in all directions, while the cup-holding mechanism is fixed in position, when the cup-holding mechanism clamps in the middle, it ensures that the cups are centered at the capping station. This allows for precise capping in conjunction with the cap-picking and placing mechanism, and it is applicable to capping operations of cups of different sizes, thereby improving packaging production quality and work efficiency.

[0007] In a preferred embodiment of the present invention, the top cup plate lifting mechanism includes a first lifting cylinder, the cylinder body of which is mounted on the frame, and the piston rod of which extends upward and is connected to the top cup plate. With this structure, the top cup plate can be raised or lowered by a certain height via the extension and retraction of the piston rod of the first lifting cylinder.

[0008] In a preferred embodiment of the present invention, the first opening and closing control device includes two first translation mechanisms, each corresponding to one of the two cup-holding plates. Each first translation mechanism includes two first translation cylinders arranged side-by-side, with the cylinder bodies mounted on the frame. The piston rods of the two first translation cylinders are connected to the two ends of the corresponding cup-holding plates. With this structure, the piston rods of the first translation cylinders of the two first translation mechanisms can synchronously extend and retract, driving the two cup-holding plates to move towards or away from each other, thereby achieving the cup-holding action upon reaching the lid-laying position.

[0009] As a preferred embodiment of the present invention, a silicone layer is provided on the inner wall of the arc-shaped notch. When the cup-holding mechanism clamps the cup body in the middle, the silicone layer directly contacts the cup body, which can prevent damage to the cup body.

[0010] As a preferred embodiment of the present invention, the storage cover mechanism includes at least one storage cover frame, at least one cover splitting assembly, and at least one cover supporting assembly. The storage cover frame is mounted on the frame and has a vertically oriented storage cover cavity inside. The bottom of the storage cover frame is provided with a cover outlet communicating with the storage cover cavity. The number of cover splitting assemblies and cover supporting assemblies is the same as that of the storage cover frame and they correspond one-to-one. The cover splitting assembly includes two cover splitting blocks arranged symmetrically front to back and a second opening and closing control device for driving the two cover splitting blocks to move towards or away from each other. The second opening and closing control device is mounted on the frame, and the two cover splitting blocks are located at the cover outlets of the corresponding storage cover frames. The cover supporting assembly includes two cover supporting blocks arranged symmetrically front to back and a third opening and closing control device for driving the two cover supporting blocks to move towards or away from each other. The third opening and closing control device is mounted on the frame, and the two cover supporting blocks are located on the lower front and rear sides of the storage cover frame. The storage cover frame is provided with an insertion port for the two cover supporting blocks to be inserted into the storage cover cavity. During operation, the lid storage rack can store stacked cup lids through the lid storage cavity and use the weight of the cup lids to automatically move them toward the lid outlet; the two lid separating blocks of the lid separating assembly are set at the lid outlet of the lid storage rack and can support the cup lid at the bottom in the lid storage cavity. After the cap-taking and cap-placing mechanism picks up the bottommost cap in the cap-storage cavity, the cap-supporting assembly first supports and limits the bottommost cap in the cap-storage cavity to prevent the stacked caps from falling. Then, the second opening and closing control device of the cap-separating assembly drives the two cap-separating blocks to move in opposite directions to release the bottommost cap in the cap-storage cavity. The cap-taking and cap-placing mechanism then removes the bottommost cap from the cap-dispensing port (at this time, other caps above this cap are fixed in position under the clamping of the cap-supporting assembly and are smoothly separated from this cap). Subsequently, the second opening and closing control device of the cap-separating assembly drives the two cap-separating blocks to move towards each other to reset, and the third opening and closing control device of the cap-supporting assembly drives the two cap-supporting blocks to move in opposite directions to release the corresponding caps, so that the caps in the cap-storage cavity can continue to move downwards, with the bottommost cap in the cap-storage cavity supported by the two cap-separating blocks.

[0011] As a further preferred embodiment of the present invention, the second opening and closing control device includes two second translation cylinders, each corresponding to one of the two cover blocks. The cylinder bodies of the second translation cylinders are mounted on the frame, and the piston rods of the second translation cylinders are connected to the corresponding cover blocks. The third opening and closing control device includes two third translation cylinders, each corresponding to one of the two cover support blocks. The cylinder bodies of the third translation cylinders are mounted on the frame, and the piston rods of the third translation cylinders are connected to the corresponding cover support blocks. With this structure, the two cover blocks can be driven to move towards or away from each other by the synchronous extension and retraction of the piston rods of the two second translation cylinders; similarly, the two cover support blocks can be driven to move towards or away from each other by the synchronous extension and retraction of the piston rods of the two third translation cylinders.

[0012] As a further preferred embodiment of the present invention, the lid storage mechanism further includes a lid storage base and a lid storage top plate. The lid storage base is mounted on the frame, and the lid storage top plate is positioned above the lid storage base. The lid storage frame includes multiple vertically oriented lid storage columns, which are arranged in a ring and connected between the lid storage base and the lid storage top plate, forming the lid storage cavity. The lid storage top plate has at least one lid inlet, which communicates with the upper end of the lid storage cavity of the corresponding lid storage frame. The lid storage base has at least one lid outlet, which communicates with the lower end of the lid storage cavity of the corresponding lid storage frame. During operation, stacked cup lids can be inserted into the lid storage cavity of the lid storage frame through the lid inlet on the lid storage top plate, and the lid removal mechanism removes the bottommost cup lid from the lid storage cavity through the lid outlet on the lid storage base.

[0013] As a further preferred embodiment of the present invention, the lid storage mechanism includes multiple lid storage racks, multiple lid-dispensing assemblies, and multiple lid-supporting assemblies. The lid storage racks are arranged sequentially from left to right, the lid-dispensing assemblies are arranged sequentially from left to right, and the lid-supporting assemblies are arranged sequentially from left to right. Correspondingly, the two cup-holding plates have multiple arc-shaped notches arranged sequentially from left to right on their adjacent portions. The two cup-holding plates have the same number of arc-shaped notches, which correspond one-to-one to form multiple cup-holding openings. Therefore, this precise positioning and capping device can complete the capping operation of multiple cups at once, greatly improving work efficiency.

[0014] As a preferred embodiment of the present invention, the lid-taking and placing mechanism further includes a flipping seat and a flipping drive device for driving the flipping seat to flip. The flipping drive device is mounted on the frame, and the flipping seat is rotatably mounted on the frame with its rotation axis running left and right. The lid-taking and placing assembly is mounted on the flipping seat. During operation, the flipping drive device drives the flipping seat to flip up and down around its rotation axis, causing the lid-taking and placing assembly to flip between the corresponding lid outlet and the cup body clamping opening. When placing the lid, the flipping drive device first drives the flipping seat and the lid-taking and placing assembly to flip upward to each lid outlet of the lid storage mechanism. The lid-taking and placing assembly then removes the cup lid from the corresponding lid outlet of the lid storage mechanism. Then, the flipping seat and the lid-taking and placing assembly are driven to flip downward 180° to transfer the cup lid to the upper side of the cup body in the corresponding cup body clamping opening. The lid-taking and placing assembly then accurately places the cup lid on the top of the cup body.

[0015] As a further preferred embodiment of the present invention, the cap loading and unloading assembly includes a capping sleeve, a vacuum suction cup, and a capping sleeve lifting mechanism for driving the capping sleeve to rise and fall. The capping sleeve is mounted on the flipping seat through the capping sleeve lifting mechanism, and the vacuum suction cup is located inside the capping sleeve. The capping sleeve cooperates with the corresponding cap outlet and the cup body clamping port. During the lid placement operation, the flipping drive device drives the flipping base and lid picking and placing assembly to flip upwards, so that the lid-pressing sleeve is directly below the lid outlet of the lid storage mechanism (at this time, the cup lid at the lid outlet is exactly within the upper opening range of the lid-pressing sleeve). Then, the lid-pressing sleeve lifting mechanism drives the lid-pressing sleeve to rise, using the lid-pressing sleeve to pick up the cup lid at the lid outlet, and at the same time, using the suction force generated by the vacuum suction cup to adhere the cup lid. Then, the lid-pressing sleeve lifting mechanism drives the lid-pressing sleeve and cup lid to fall, so that the cup lid is detached from the lid outlet of the lid storage mechanism. Then, the flipping drive device drives the flipping base and lid picking and placing assembly to flip downwards, so that the lid-pressing sleeve and cup lid are directly above the cup body clamping opening (at this time, the cup lid is exactly opposite the top position of the cup body at the cup body clamping opening). Then, the lid-pressing sleeve lifting mechanism drives the lid-pressing sleeve and cup lid to fall, using the lid-pressing sleeve to accurately cover the top of the cup body.

[0016] As a further preferred embodiment of the present invention, the capping sleeve includes a base plate and an annular support wall, the bottom of which is integrally connected to the outer periphery of the base plate; the top of the annular support wall has two opposite notches. When the capping sleeve takes a cup lid at the lid outlet, the cup lid can enter the inner side of the capping sleeve through the upper opening at the top of the annular support wall, and the edge of the cup lid is supported by the top of the annular support wall; the two notches on the annular support wall allow two separate lid pieces to enter, ensuring that the two separate lid pieces do not affect the capping sleeve's approach towards the lid outlet.

[0017] As a further preferred embodiment of the present invention, the cap sleeve lifting mechanism includes a second lifting cylinder, a lifting frame, multiple guide sleeves, and multiple lifting guide rods. The cylinder body of the second lifting cylinder is mounted on the tilting seat and runs vertically. The piston rod of the second lifting cylinder is connected to the lifting frame. Each guide sleeve is mounted on the tilting seat and runs vertically. Each lifting guide rod is respectively disposed in a corresponding guide sleeve, and one end of each lifting guide rod is connected to the lifting frame. The cap sleeve is mounted on the lifting frame. With this structure, the lifting frame and cap sleeve can be driven to rise and fall by the extension and retraction of the piston rod of the second lifting cylinder. At the same time, the cooperation between each guide sleeve and each guide rod makes the lifting movement of the lifting frame and cap sleeve more stable and the adjustment more precise.

[0018] As a further preferred embodiment of the present invention, the flipping drive device includes a servo motor and a reducer. The flipping base is rotatably mounted on the frame via a rotating shaft, which is rotatably mounted on the frame and runs horizontally. The flipping base is fixedly mounted on the rotating shaft. Both the servo motor and the reducer are mounted on the frame, and the output shaft of the servo motor is connected to the rotating shaft via the reducer. During operation, the servo motor drives the rotating shaft to rotate via the reducer, causing the flipping base to flip up and down around the rotating shaft.

[0019] As a further preferred embodiment of the present invention, the precise positioning capping device further includes a controller, a signal disk, and a detection switch for detecting the rotation signal of the signal disk. The signal disk is fixedly mounted on one end of the rotating shaft, and the detection switch is mounted on the frame and faces the signal disk. The detection switch is electrically connected to the corresponding input terminal of the controller, and the servo motor is electrically connected to the corresponding output terminal of the controller. Specifically, the detection switch can be a proximity switch or a photoelectric sensor. During operation, as the servo motor drives the rotating shaft to rotate through the reducer, the signal disk rotates along with the rotating shaft. The detection switch monitors the rotation signal of the signal disk in real time and outputs it to the controller. The controller determines whether the flipping seat and the cap placement assembly have flipped into place based on the rotation signal to ensure the accuracy of cap placement.

[0020] Compared with the prior art, the present invention has the following advantages: (1) This precision positioning capping device is provided with a cup-holding plate with a cup-accommodating hole on the cup conveying mechanism, and a cup-lifting mechanism and a cup-holding mechanism are provided at the capping station. The cup conveying mechanism delivers a set of cups to the capping station. The cup-lifting mechanism lifts the set of cups freely from below the cup conveying mechanism. Then the cup-holding mechanism clamps the set of cups in the middle to calibrate the position. Since the cups that are lifted freely can move in all directions, while the position of the cup-holding mechanism is fixed, when the cup-holding mechanism clamps in the middle, it ensures that the position of the cups is at the center of the capping station. This can be used in conjunction with the cap-removing mechanism to achieve precise capping. It is also applicable to capping operations of cups of different specifications and has a wide range of applications. (2) In this precision positioning capping device, the cap picking and placing mechanism can automatically take out the cup cap inside the cap storage mechanism through the cooperation of servo motor, reducer, flipping seat, rotating shaft, multiple cap picking and placing components, signal disk and detection switch, and then accurately transfer and close it on the cup body on the cup holding mechanism. This can achieve precise cap placement, and the entire cap placement operation is fully automated. It is suitable for automated production of cup body batch packaging production line, thereby greatly improving work efficiency. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the precision positioning capping device according to a preferred embodiment of the present invention.

[0022] Figure 2 yes Figure 1 The left view.

[0023] Figure 3 yes Figure 1 The diagram shows the structure of the cup-holding mechanism in the precision positioning capping device.

[0024] Figure 4 yes Figure 1 The diagram shows the structure of the pressure cap sleeve in the precision positioning pressure cap device.

[0025] Figure 5 yes Figure 4 Top view. Detailed Implementation

[0026] like Figures 1-5As shown, this precise positioning capping device includes a frame 1, a cup conveying mechanism 2, a cap storage mechanism 3, a cup lifting mechanism 4, a cup holding mechanism 5, and a cap picking and placing mechanism 6. The cup conveying mechanism 2, the cap storage mechanism 3, and the cap picking and placing mechanism 6 are all mounted on the frame 1. The cup conveying mechanism 2 is provided with multiple cup hanging plates 21 arranged sequentially from front to back along its running direction. The cup hanging plates 21 have multiple cup receiving holes 2101 for inserting cups 200. The cap storage mechanism 3 is located above the cup conveying mechanism 2. The cap storage mechanism 3 includes multiple cap storage racks 31, multiple cap separating components 32, and multiple cap supporting components 33. Each cap storage rack 31 is mounted on the frame 1 and arranged sequentially from left to right. The cap storage rack 31 has a cap storage cavity 310 running vertically inside. The bottom of each cap storage rack 31 is provided with a cap outlet 3101 communicating with the cap storage cavity 310. The cap separating components 32, the cap supporting components 33, and the cap storage racks 31 are arranged sequentially from left to right. The quantities are identical and correspond one-to-one. The lid-separating assembly 32 includes two lid-separating blocks 321 symmetrically arranged front and rear, and a second opening and closing control device 322 for driving the two lid-separating blocks 321 to move towards or away from each other. The second opening and closing control device 322 is mounted on the frame 1, and the two lid-separating blocks 321 are located at the lid outlet 3101 of the corresponding lid storage rack 31. The lid-supporting assembly 33 includes two lid-supporting blocks 331 symmetrically arranged front and rear, and a third opening and closing control device 332 for driving the two lid-supporting blocks 331 to move towards or away from each other. The third opening and closing control device 332 is mounted on the frame 1, and the two lid-supporting blocks 331 are located on the lower front and rear sides of the lid storage rack 31. The lid storage rack 31 is provided with an insertion port for the two lid-supporting blocks 331 to be inserted into the lid storage cavity 310. The cup-topping mechanism 4 includes a cup-topping plate 41 and a first lifting cylinder 42. The cup-topping plate 41 is located below the cup body conveying mechanism 2 and directly below the lid storage mechanism 3. The cylinder body of the first lifting cylinder 42 is mounted on the frame 1. The piston rod of the first lifting cylinder 42 extends upward and is connected to the top cup plate 41. The cup-holding mechanism 5 is located between the top cup mechanism 4 and the lid storage mechanism 3. The cup-holding mechanism 5 includes two cup-holding plates 51 arranged symmetrically front and rear, and a first opening and closing control device 52 for driving the two cup-holding plates 51 to move towards or away from each other. The first opening and closing control device 52 is mounted on the frame 1. The two cup-holding plates 51 have multiple arc-shaped notches 511 arranged sequentially from left to right on the parts of the two cup-holding plates 51 that are close to each other. Two arc-shaped notches 511 opposite to each other on the plate 51 together form a cup holding port 512 for holding the cup body 200. Each cup holding port 512 is located directly below the corresponding lid outlet 3101. The lid picking and placing mechanism 6 is set between the lid storage mechanism 3 and the cup holding mechanism 5. The lid picking and placing mechanism 6 includes multiple lid picking and placing components 61, a flipping seat 62 and a flipping drive device 63 for driving the flipping seat 62 to flip. The flipping drive device 63 is mounted on the frame 1. The flipping seat 62 is rotatably mounted on the frame 1 and its rotation axis is oriented left and right.Each cap-taking and placement assembly 61 is mounted on the flipping base 62 and arranged sequentially from left to right. Each cap-taking and placement assembly 61 includes a cap-pressing sleeve 611, a vacuum suction cup 612, and a cap-pressing sleeve lifting mechanism 613 for driving the cap-pressing sleeve 611 to rise and fall. The cap-pressing sleeve 611 is mounted on the flipping base 62 via the cap-pressing sleeve lifting mechanism 613, and the vacuum suction cup 612 is located inside the cap-pressing sleeve 611. The cap-pressing sleeves 611 are respectively positioned between the corresponding cap outlet 3101 and the cup body clamping opening 512.

[0027] In this embodiment, a silicone layer 513 is provided on the inner wall of the arc-shaped notch 511. When the cup-holding mechanism 5 clamps the cup body 200 in the middle, the silicone layer 513 directly contacts the cup body 200, which can prevent damage to the cup body 200.

[0028] In this embodiment, the cup conveying mechanism 2 includes two conveying chains 20 arranged side by side, driven by a motor. Along the length direction, multiple cup hanging plates 21 are arranged sequentially from front to back between the two conveying chains 20. The cup hanging plates 21 are provided with multiple cup receiving holes 2101 arranged from left to right. The cup receiving holes 2101 are used to place the cup 200 with the cup mouth sealed.

[0029] In this embodiment, the first opening and closing control device 52 includes two first translation mechanisms 521, each corresponding to one of the two cup-holding plates 51. Each first translation mechanism 521 includes two first translation cylinders 5211 arranged side-by-side. The cylinder bodies of the two first translation cylinders 5211 are mounted on the frame 1, and the piston rods of the two first translation cylinders 5211 are connected to both ends of the corresponding cup-holding plate 51. With this structure, the piston rods of the first translation cylinders 5211 of the two first translation mechanisms 521 can synchronously extend and retract, driving the two cup-holding plates 51 to move towards or away from each other, thereby achieving the cup-holding action on the cup 200 that has reached the lid-laying position.

[0030] In this embodiment, the storage cover mechanism 3 further includes a storage cover base 34 and a storage cover top plate 35. The storage cover base 34 is mounted on the frame 1, and the storage cover top plate 35 is disposed above the storage cover base 34. The storage cover frame 31 includes a plurality of vertically oriented storage cover columns 311, which are arranged in a ring and connected between the storage cover base 34 and the storage cover top plate 35. The storage cover columns 311 together form a storage cover cavity 310. The storage cover top plate 35 is provided with a plurality of cover inlets 3102, which are connected to the upper end of the storage cover cavity 310 of the corresponding storage cover frame 31. The storage cover base 34 is provided with a plurality of cover outlets 3101, which are connected to the lower end of the storage cover cavity 310 of the corresponding storage cover frame 31.

[0031] In this embodiment, the second opening and closing control device 322 includes two second translation cylinders 3221, each corresponding to one of the two cover blocks 321. The cylinder body of the second translation cylinder 3221 is mounted on the frame 1, and the piston rod of the second translation cylinder 3221 is connected to the corresponding cover block 321. The third opening and closing control device 332 includes two third translation cylinders 3321, each corresponding to one of the two cover blocks 331. The cylinder body of the third translation cylinder 3321 is mounted on the frame 1, and the piston rod of the third translation cylinder 3321 is connected to the corresponding cover block 331.

[0032] In this embodiment, the capping sleeve 611 includes a base plate 6111 and an annular support wall 6112. The bottom of the annular support wall 6112 is integrally connected to the outer periphery of the base plate 6111. The top of the annular support wall 6112 has two opposing notches 61120. When the capping sleeve 611 takes the cup lid 300 at the lid outlet 3101, the cup lid 300 can enter the inner side of the capping sleeve 611 through the upper opening at the top of the annular support wall 6112. The edge of the cup lid 300 is supported by the top of the annular support wall 6112. The two notches 61120 on the annular support wall 6112 allow two separate lid blocks 321 to enter, ensuring that the two separate lid blocks 321 do not affect the capping sleeve 611's approach towards the lid outlet 3101.

[0033] In this embodiment, the cap sleeve lifting mechanism 613 includes a second lifting cylinder 6131, a lifting frame 6132, multiple guide sleeves 6133, and multiple lifting guide rods 6134. The cylinder body of the second lifting cylinder 6131 is mounted on the tilting seat 62 and runs vertically. The piston rod of the second lifting cylinder 6131 is connected to the lifting frame 6132. Each guide sleeve 6133 is mounted on the tilting seat 62 and runs vertically. Each lifting guide rod 6134 is respectively disposed in the corresponding guide sleeve 6133, and one end of each lifting guide rod 6134 is connected to the lifting frame 6132. The cap sleeve 611 is mounted on the lifting frame 6132. With this structure, the lifting frame 6132 and the cap sleeve 611 can be driven to rise and fall by the extension and retraction of the piston rod of the second lifting cylinder 6131. ​​At the same time, the cooperation between each guide sleeve 6133 and each guide rod makes the lifting movement of the lifting frame 6132 and the cap sleeve 611 more stable and the adjustment more precise.

[0034] In this embodiment, the flipping drive device 63 includes a servo motor 631 and a reducer 632. The flipping base 62 is rotatably mounted on the frame 1 via a rotating shaft 621, which is rotatably mounted on the frame 1 and runs left-right. The flipping base 62 is fixedly mounted on the rotating shaft 621. Both the servo motor 631 and the reducer 632 are mounted on the frame 1. The output shaft of the servo motor 631 is connected to the rotating shaft 621 via the reducer 632. This precise positioning capping device also includes a controller (not shown in the figure), a signal disk 8, and a detection switch 9 for detecting the rotation signal of the signal disk 8. The signal disk 8 is fixedly mounted on one end of the rotating shaft 621. The detection switch 9 is mounted on the frame 1 and faces the signal disk 8. The detection switch 9 is electrically connected to the corresponding input terminal of the controller, and the servo motor 631 is electrically connected to the corresponding output terminal of the controller. Specifically, the detection switch 9 can be a proximity switch or a photoelectric sensor. Two through holes are symmetrically arranged on the edge of the signal disk 8 relative to the rotating shaft 621. The cooperation between the two through holes and the detection switch 9 ensures that the rotating shaft 621 rotates into place.

[0035] The working principle of this precise positioning capping device is briefly described below: During operation, each lid storage rack 31 stores stacked cup lids 300 inside its lid storage cavity 310, and conveys the cup lids 300 one by one to the lid outlet 3101. The two lid-splitting blocks 321 of the lid-splitting assembly 32 support the bottommost cup lid 300 in the lid storage cavity 310. After conveying a group of cups 200 to the lid placement station, the cup conveying mechanism 2 pauses its movement. The first lifting cylinder 42 of the cup-lifting mechanism 4 drives the cup-lifting plate 41 to rise. The cup-lifting plate 41 contacts the bottom of the group of cups 200 that have reached the lid placement station on the cup-hanging plate 21 and lifts them up, raising the group of cups 200 between the two cup-holding plates 51 of the cup-holding mechanism 5. Subsequently, the first lifting cylinder 42 of the cup-lifting mechanism 4 drives the cup-lifting plate 41 to rise. The cup-lifting plate 41 contacts the bottom of the group of cups 200 that have reached the lid placement station on the cup-hanging plate 21 and lifts them up, raising the group of cups 200 between the two cup-holding plates 51 of the cup-holding mechanism 5. Each of the first translation cylinders 5211 of the opening and closing control device 52 drives the two cup-holding plates 51 to move towards each other. At this time, the two arc-shaped notches 511 of the two cup-holding plates 51, which are positioned opposite each other, together form a cup-body clamping opening 512 to clamp the corresponding cup 200, thereby achieving complete positional calibration of each cup 200 and ensuring that its position is at the center of the lid-laying station. Subsequently, the servo motor 631 of the flipping drive device 63 drives the rotating shaft 621 to rotate through the reducer 632, causing the flipping seat 62 and the lid-laying assembly 61 to rotate upward 180° around the rotating shaft 621. (During this process, the signal disk 8 rotates together under the drive of the rotating shaft 621, through...) The detection switch 9 monitors the rotation signal of the signal disk 8 in real time and outputs it to the controller. The controller determines whether the flipping seat 62 and the lid picking and placing assembly 61 have been flipped into place based on the rotation signal, so that the capping sleeve 611 is directly below the lid outlet 3101 of the lid storage mechanism 3 (at this time, the cup lid 300 at the lid outlet 3101 is exactly within the upper opening range of the capping sleeve 611). Then, the capping sleeve lifting mechanism 613 drives the capping sleeve 611 to rise, and the capping sleeve 611 picks up the cup lid 300 at the lid outlet 3101. At the same time, the suction force generated by the vacuum suction cup 612 is used to attract the cup lid 300. Then, the lid holding assembly 33 holds the lid in place in the lid storage cavity. The bottommost cup lid 300 in the 310 is supported and limited to prevent the stacked cup lids 300 from falling. Then, the two second translation cylinders 3221 of the second opening and closing control device 322 of the lid separating assembly 32 drive the two lid separating blocks 321 to move in opposite directions to release the bottommost cup lid 300 in the lid storage cavity 310. Then, the lid pressing sleeve lifting mechanism 613 drives the lid pressing sleeve 611 and the cup lid 300 to descend, so that the bottommost cup lid 300 in the lid storage cavity 310 is taken out from the lid outlet 3101 (at this time, the other cup lids 300 on the upper side of this cup lid 300 are fixed in position under the clamping of the lid supporting assembly 33 and are smoothly separated from this cup lid 300).Subsequently, the servo motor 631 of the flipping drive device 63 drives the rotating shaft 621 to rotate via the reducer 632, driving the flipping seat 62 and the lid-taking assembly 61 to flip downwards by 180° around the rotating shaft 621 (during this process, the signal disk 8 rotates together with the rotating shaft 621, and the rotation signal of the signal disk 8 is monitored in real time by the detection switch 9 and output to the controller, which determines whether the flipping seat 62 and the lid-taking assembly 61 have been flipped into place based on the rotation signal), so that the capping sleeve 611 and the cup lid 300 reach directly above the cup body clamping opening 512 (at this time, the cup lid 300 is exactly aligned with the top position of the cup body 200 at the cup body clamping opening 512); then, the capping sleeve lifting mechanism 613 drives the capping sleeve 611 and the cup lid 300 to descend, using the capping sleeve 611 to accurately cover the top of the cup body 200; then, the first opening and closing control device 5 Each of the first translation cylinders 5211 drives the two cup-holding plates 51 to move in opposite directions, releasing the group of cups 200. Then, the first lifting cylinder 42 drives the top cup plate 41 to descend, causing the group of cups 200 to fall back into the corresponding cup receiving holes 2101 on the cup hanging plate 21. The cup conveying mechanism 2 continues to transport the next group of cups 200 to the lid placement station. At the same time, the two second translation cylinders 3221 of the second opening and closing control device 322 drive the two lid-splitting blocks 321 to move towards each other and reset. The third translation cylinder 3321 of the third opening and closing control device 332 drives the two lid-supporting blocks 331 to move in opposite directions to release the corresponding cup lids 300, so that the cup lids 300 in the lid storage cavity 310 can continue to move down. The cup lid 300 at the bottom in the lid storage cavity 310 is supported by the two lid-splitting blocks 321, waiting for the transfer of the lid placement mechanism 6, ready to place the lids on the next group of cups 200.

[0036] Furthermore, it should be noted that the names of the various parts of the specific embodiments described in this specification may differ. All equivalent or simple variations made to the structure, features, and principles of this invention are included within the scope of protection of this invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this invention or exceed the scope defined by the claims, all of which should fall within the scope of protection of this invention.

Claims

1. A precision positioning capping device, comprising a frame, a cup conveying mechanism, a cap storage mechanism, and a cap picking and placing mechanism; the cap storage mechanism, the cup conveying mechanism, and the cap picking and placing mechanism are all mounted on the frame, and the bottom of the cap storage mechanism is provided with at least one cap outlet; characterized in that: The precise positioning capping device further includes a cup-top mechanism and a cup-holding mechanism. The cup-top mechanism includes a cup-top plate and a cup-top plate lifting mechanism for driving the cup-top plate to rise and fall. The cup-top plate lifting mechanism is mounted on the frame. The cup-top plate is located below the cup conveying mechanism and directly below the cap storage mechanism. The cup conveying mechanism has multiple cup-hanging plates arranged sequentially from front to back along its running direction. Each cup-hanging plate has at least one cup-receiving hole for inserting a cup. The cup-holding mechanism is located between the cup-top mechanism and the cap storage mechanism. The cup-holding mechanism includes two cup-holding plates arranged symmetrically front to back and a first opening and closing control device for driving the two cup-holding plates to move towards or away from each other. The first opening and closing control device is mounted on the frame. Each of the two cup-holding plates has at least one arc-shaped notch at its close proximity. The two arc-shaped notches of the two cup-holding plates together form a cup-holding opening for clamping the cup. The cap-taking and placing mechanism includes at least one cap-taking and placing assembly, which is located between the corresponding cap outlet and the cup-holding opening.

2. The precision positioning capping device according to claim 1, characterized in that: The top cup plate lifting mechanism includes a first lifting cylinder, the cylinder body of which is mounted on the frame, and the piston rod of which extends upward and is connected to the top cup plate; the first opening and closing control device includes two first translation mechanisms, each corresponding to one of the two cup plates. Each first translation mechanism includes two first translation cylinders arranged side by side, the cylinder bodies of which are mounted on the frame, and the piston rods of which are connected to the two ends of the corresponding cup plates.

3. The precision positioning capping device according to claim 1, characterized in that: The storage cover mechanism includes at least one storage cover frame, at least one cover splitting assembly, and at least one cover supporting assembly. The storage cover frame is mounted on the frame and has a vertically oriented storage cover cavity inside. The bottom of the storage cover frame is provided with a cover outlet communicating with the storage cover cavity. The number of cover splitting assemblies and cover supporting assemblies is the same as that of the storage cover frame and they correspond one-to-one. The cover splitting assembly includes two cover splitting blocks arranged symmetrically front to back and a second opening and closing control device for driving the two cover splitting blocks to move towards or away from each other. The second opening and closing control device is mounted on the frame, and the two cover splitting blocks are located at the cover outlets of the corresponding storage cover frames. The cover supporting assembly includes two cover supporting blocks arranged symmetrically front to back and a third opening and closing control device for driving the two cover supporting blocks to move towards or away from each other. The third opening and closing control device is mounted on the frame, and the two cover supporting blocks are located on the lower front and rear sides of the storage cover frame. The storage cover frame is provided with an insertion port for the two cover supporting blocks to be inserted into the storage cover cavity.

4. The precision positioning capping device according to claim 3, characterized in that: The second opening and closing control device includes two second translation cylinders, each corresponding to one of the two cover blocks. The cylinder body of the second translation cylinder is mounted on the frame, and the piston rod of the second translation cylinder is connected to the corresponding cover block. The third opening and closing control device includes two third translation cylinders, each corresponding to one of the two cover blocks. The cylinder body of the third translation cylinder is mounted on the frame, and the piston rod of the third translation cylinder is connected to the corresponding cover block.

5. The precision positioning capping device according to claim 3, characterized in that: The storage cover mechanism further includes a storage cover base and a storage cover top plate. The storage cover base is installed on the frame, and the storage cover top plate is located above the storage cover base. The storage cover frame includes multiple vertically oriented storage cover columns, which are arranged in a ring and connected between the storage cover base and the storage cover top plate. The storage cover columns together form the storage cover cavity. The storage cover top plate is provided with at least one cover inlet, which communicates with the upper end of the storage cover cavity of the corresponding storage cover frame. The storage cover base is provided with at least one cover outlet, which communicates with the lower end of the storage cover cavity of the corresponding storage cover frame.

6. The precision positioning capping device according to claim 1, characterized in that: The cover picking and placing mechanism also includes a flipping seat and a flipping drive device for driving the flipping seat to flip. The flipping drive device is mounted on the frame. The flipping seat is rotatably mounted on the frame and its rotation axis is oriented left and right. The cover picking and placing assembly is mounted on the flipping seat.

7. The precision positioning capping device according to claim 6, characterized in that: The cap loading and unloading assembly includes a capping sleeve, a vacuum suction cup, and a capping sleeve lifting mechanism for driving the capping sleeve to rise and fall. The capping sleeve is mounted on the flipping base through the capping sleeve lifting mechanism, and the vacuum suction cup is located inside the capping sleeve. The capping sleeve cooperates with the corresponding cap outlet and the cup body clamping outlet.

8. The precision positioning capping device according to claim 7, characterized in that: The pressure sleeve includes a base plate and an annular support wall. The bottom of the annular support wall is integrally connected to the outer periphery of the base plate. The top of the annular support wall has two opposite notches.

9. A precision positioning capping device according to claim 7, characterized in that: The cap sleeve lifting mechanism includes a second lifting cylinder, a lifting frame, multiple guide sleeves, and multiple lifting guide rods. The cylinder body of the second lifting cylinder is mounted on the tilting seat and runs vertically. The piston rod of the second lifting cylinder is connected to the lifting frame. Each guide sleeve is mounted on the tilting seat and runs vertically. Each lifting guide rod is respectively set in the corresponding guide sleeve, and one end of each lifting guide rod is connected to the lifting frame. The cap sleeve is mounted on the lifting frame.

10. The precision positioning capping device according to claim 1, characterized in that: The flipping drive device includes a servo motor and a reducer. The flipping base is rotatably mounted on the frame via a rotating shaft, which is rotatably mounted on the frame and runs left-right. The flipping base is fixedly mounted on the rotating shaft. Both the servo motor and the reducer are mounted on the frame. The output shaft of the servo motor is connected to the rotating shaft via the reducer. The precision positioning capping device also includes a controller, a signal disk, and a detection switch for detecting the rotation signal of the signal disk. The signal disk is fixedly mounted on one end of the rotating shaft. The detection switch is mounted on the frame and faces the signal disk. The detection switch is electrically connected to the corresponding input terminal of the controller, and the servo motor is electrically connected to the corresponding output terminal of the controller.

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