A conveying and positioning device and positioning method for the iron lid of a round can

Abstract

The present invention relates to a conveying and positioning device for iron lids of round cans. The conveying and positioning device includes a working platform arranged on a conveyor belt. The working platform is divided into a capping station area and a capping and lid-dropping area. There is a vacuum chamber above the working platform; the capping station area is provided with a capping station for cooperating with the placement of round cans; the capping and lid-dropping area is provided with a lid-dropping station for cooperating with the iron lids. The lid-dropping station is provided with a lid-sorting and lid-dropping device and a lid-receiving tray that cooperate up and down. The iron lids of this lid positioning method are not directly dropped above the round cans, which avoids the asynchronous phenomenon between the iron lids and the round cans caused by the drop height and different rotational angular velocities during the fall, can ensure the precise matching between the iron lids and the round cans, and improves the working efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of can sealing machines, and particularly to a conveying and positioning device and a positioning method for round can iron lids, and more particularly to a parallel conveying and positioning device and its positioning method. Background Art

[0002] At present, there are two methods for lid positioning in the can sealing machine industry: the turntable rotation type and the serial conveying type.

[0003] Among them, for the turntable rotation type, the lid separating and dropping assembly is installed above the turntable. The separated round lids fall into the turntable and are conveyed to the capping station through the rotation of the turntable. This rotation type lid positioning method requires more pause time for lid separation and dropping. Each additional station adds one more lid separation and dropping time, which will consume more working conditions time and reduce work efficiency. If it is also necessary to add vacuum pumping and nitrogen filling on the equipment, the vacuum pumping equipment also needs to be changed to a rotatable structure around the axis. Such a structure is too complex and the processing cost is high. At the same time, it is generally only applicable to large and medium-sized equipment such as 8-station and 16-station, which is not conducive to popularization and application.

[0004] For the other serial conveying type, the lid separating and dropping assembly is installed directly above the can positioning point on the side of the can sealing machine where the cans enter. The separated lids directly fall onto the top of the round cans to be sealed, or fall into the trays and are pushed to the capping station by the telescopic cylinder. For this lid positioning method, the more capping stations there are, the longer the round lid tray needs to travel forward (because the tray of a single-station device only needs to travel the length of 1 station, and the tray of a two-station device needs to travel the length of 2 stations, and so on), that is, the longer the conveying time is required. The too long equipment head will increase the floor area, and the too long conveying time will also reduce work efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide an improved conveying and positioning device and a positioning method for round can iron lids, which can overcome the deficiencies in the prior art such as inaccurate positioning, large floor area, and low conveying work efficiency.

[0006] To achieve the above purpose, the technical solution of the present invention is: a conveying and positioning device for round can iron lids, the conveying and positioning device is arranged on the conveyor belt, and round cans are conveyed on the conveyor belt. It is characterized in that: the conveying and positioning device includes a working platform arranged on the conveyor belt, the working platform is divided into a capping station area and a capping and lid dropping area, and a vacuum chamber is arranged above the working platform; the capping station area is provided with a capping station for placing the round cans in cooperation; the capping and lid dropping area is provided with a lid dropping station for cooperating with the iron lids, and the lid dropping station is provided with a lid separating and dropping device and a lid receiving tray that cooperate up and down.

[0007] Preferably, a tray bracket which can slide along the working platform is provided at the bottom of the working platform, a cover receiving tray is provided on the tray bracket, a push rod cylinder is provided at the bottom of the working platform, the push rod cylinder is connected to the tray bracket, and is used to push the tray bracket to slide back and forth; the cover separating and dropping device includes a raised annular chassis, three cover storage brackets are provided on the annular chassis, a telescopic cylinder is provided on the annular chassis, and a paddle is provided on the inner side of the annular chassis.

[0008] Furthermore, two capping stations and two corresponding iron cover dropping stations are provided in the middle of the working platform. The two ends of the working platform are triangular and provided with downwardly extending bosses, and a push rod cylinder is embedded in one of the bosses; a slide rail is provided on each side of the bottom of the working platform, and a slide groove and a sliding bearing matching the slide rail are provided at both ends of the tray bracket, the slide groove is clamped on the slide rail, a gap cavity is provided between the working platform and the tray bracket, and a buffer gasket is provided at one end of the working platform; sealing rings are provided on the upper and lower parts of the cover tray, respectively.

[0009] Furthermore, the three storage cover brackets are arranged at the edge of the inner circle of the ring, and the storage cover brackets enclose an iron cover placement cavity for placing the iron cover of the round can that needs to be sealed and installed. The ring is composed of a three-layer structure stacked on top of each other, and the inner wall of the ring is provided with a slot, with a total of three slots. The three paddles are respectively arranged in the three slots, and the sides of the paddles expose the slots to push the iron cover so that the iron cover is separated and falls into the cover receiving tray below. The position of the paddle is staggered with the position of the storage cover bracket.

[0010] Furthermore, the paddle is a rotary cutter structure, and the heights of the three slots are arranged in a step-like manner.

[0011] A positioning method for a conveying and positioning device for round can iron covers, characterized in that the positioning method is as follows: a. Preparatory work, the push rod cylinder extends to push the tray bracket to the bottom of the cover separating and falling device, so that the cover receiving tray and the cover separating and falling device are arranged opposite to each other; b. Cover falling work, through the action of three paddles on the cover separating and falling device, the iron cover at the bottom of the round can iron cover is peeled off, so that the iron cover falls into the cover receiving tray below; c. Resetting action, the push rod cylinder is retracted, and the cover receiving tray with the iron cover is pulled back to the bottom of the capping station, waiting for the capping work with the round can.

[0012] Compared with the prior art, the technical solution of the present invention not only improves the overall technical solution, but also includes many improvements in details. Specifically, it has the following beneficial effects:

[0013] 1. The improved solution described in the present invention is that the conveying and positioning device includes a working platform arranged on the conveyor belt, and the working platform is divided into a capping station area and a capping and falling area. A vacuum chamber is arranged above the working platform, and the iron caps falling from the capping and falling area are received by the movement of the tray bracket under the working platform, and the iron caps are transported to the designated capping station. This cap positioning method is completely different from the turntable rotation type and the serial conveying type. The iron caps do not fall directly onto the top of the round can, which avoids the asynchronism between the iron cap and the round can caused by the drop difference and the different rotation angle speed during the fall, and can ensure the precise matching of the iron cap and the round can, thereby improving the work efficiency;

[0014] 2. In the technical solution of the present invention, a push rod cylinder is provided at the bottom of the working platform, and the push rod cylinder is connected to the tray bracket to push the tray bracket to slide back and forth; the cover separating and dropping device includes a raised annular chassis, and three cover storage brackets are provided on the annular chassis, which can place a stack of iron covers corresponding to the round cans, and a telescopic cylinder is provided on the annular chassis, and a paddle is provided on the inner side of the annular chassis. Through the rotation of the paddle, the stack of iron covers arranged in the three cover storage brackets can be easily separated one by one, and can fall into the corresponding tray bracket after being separated one by one, which can ensure that the iron covers are separated one by one, and the position of the iron covers on the tray bracket can be accurately controlled, which provides a guarantee for the subsequent cover installation process;

[0015] 3. The tray support of the present invention is precisely controlled by a push rod cylinder. At the same time, according to the requirements of the workstations, three or even more capping workstations are set, which ensures the simultaneous positioning and operation of multiple workstations without occupying a small area, thereby improving work efficiency;

[0016] 4. The positioning method of the present invention is simple and efficient, and can make the iron cover and the round can precisely matched to achieve a perfect match. At the same time, the structure of the present invention occupies a small area and can be used with most can sealing machines, which is easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a reference diagram of the use status of the present invention.

[0018] Figure 2 It is a schematic structural diagram of an embodiment of the present invention.

[0019] Figure 3 It is a structural schematic diagram of another embodiment of the present invention.

[0020] Figure 4 It is a structural schematic diagram of the cover separating and removing device of the present invention.

[0021] Figure 5 It is a schematic structural diagram of the tray support of the present invention.

[0022] Figure 6This is another reference diagram of the usage state of the present invention.

[0023] Reference numerals:

[0024] 1 sub-cover capping device, 2 tray support, 3 capping station, 4 lid-sealing station, 5 working platform, 6 round tank, 7 vacuum chamber, 8 conveyor belt;

[0025] 11 lid storage support, 12 telescopic cylinder, 13 paddle;

[0026] 21 lid-receiving tray, 22 slide rail, 23 push rod cylinder, 24 sliding bearing, 25 buffer gasket, 26 sealing ring, 27 arc surface. Detailed implementation manners

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] The present invention provides a conveying and positioning device for the iron lid of a round tank. Specifically, refer to Figure 1 , the conveying and positioning device is arranged on the conveyor belt, and the round tank is conveyed on the conveyor belt. The difference from the prior art is that the conveying and positioning device includes a working platform arranged on the conveyor belt. The working platform is divided into a lid-sealing station area and a lid-sealing and capping area. There is a vacuum chamber above the working platform; the lid-sealing station area is provided with a lid-sealing station for placing the round tank in cooperation; the lid-sealing and capping area is provided with a capping and capping station for the iron lid in cooperation. The capping station is provided with a sub-cover capping device and a lid-receiving tray that cooperate up and down. The two areas here can add more stations according to the working conditions, so that the device can meet the needs of a multi-station conveying and positioning device, and at the same time save more floor space. This lid positioning method is completely different from the rotary turntable type and serial conveying type. The iron lid does not directly fall above the round tank, avoiding the asynchronous phenomenon between the iron lid and the round tank caused by the drop height and different rotational angular velocities during the fall, ensuring the precise matching between the iron lid and the round tank, and improving the working efficiency.

[0029] In one embodiment, a tray support that can slide along the working platform is provided at the bottom of the working platform. There are two cover-receiving trays provided on the tray support, arranged side by side. A push rod cylinder is provided at the bottom of the working platform, and the push rod cylinder is connected to the tray support to push the tray support to reciprocally slide along the bottom of the working platform. This can effectively reduce the conveying and positioning time of the iron lids and improve production efficiency. The cover separating and dropping device includes a protruding circular ring chassis. There are three lid storage supports provided on the circular ring chassis. A telescopic cylinder is provided on the circular ring chassis, and a paddle is provided inside the circular ring chassis. Through the rotation of the paddle, a stack of iron lids arranged in the three lid storage supports can be easily separated one by one, and can be separated one by one and then fall onto the corresponding tray supports. This can ensure that the iron lids are separated one by one and accurately control the position of the iron lids on the tray supports, providing guarantee for the subsequent lid installation process.

[0030] Furthermore, two capping stations and two corresponding iron lid dropping stations are provided in the middle of the working platform. The two ends of the working platform are triangular and are provided with downward-extending bosses. A push rod cylinder is embedded in one of the bosses. On both sides of the bottom of the working platform, a slide rail is respectively provided. At both ends of the tray support, there are chutes and sliding bearings that cooperate with the slide rails. The chutes are clamped on the slide rails. There is a clearance cavity between the working platform and the tray support. A guiding piece is provided on the side of the clearance cavity to correct the smoothness of the dropped iron trays. The height of this clearance cavity is 1 - 1.5 times the height of the cover separating and dropping device. A buffer gasket is provided at one end of the working platform. Sealing rings are respectively provided on the upper and lower parts of the cover-receiving tray. The sealing rings are for better receiving the dropped iron trays and ensuring the smoothness and flatness of the iron trays on the cover-receiving tray. The sealing rings are in a flared shape, and their large ends face the outside of the cover-receiving tray, that is, for the upper sealing ring, its flared large port faces the cover separating and dropping device, which is more conducive to receiving the iron trays.

[0031] Optionally, an arc-shaped groove is provided on the inner side of the cover-receiving tray. The arc-shaped groove forms an iron tray receiving surface to receive the iron trays and further adjust the angle of the iron trays to ensure the flatness of the iron trays placed. Here, the arc-shaped groove has an inner concave arc surface in the upper part and a slightly convex arc surface in the lower part. The cross-section of the arc surface is in an S shape. The ratio of the area of the inner concave arc surface in the upper part to the area of the slightly convex arc surface in the lower part is 2:1.3.

[0032] In another embodiment, the three lid storage supports are arranged at the edge of the inner circle of the circular ring. The lid storage supports enclose an iron lid placement cavity for placing the round can iron lids that need to be capped and installed. The iron lid placement cavity has a conical structure with a slightly smaller upper part and a slightly larger bottom part, which is conducive to the stacking of the iron lids and further ensures that the iron lids are not easily stuck when falling.

[0033] The ring is composed of three layers of structures. The first layer is the installation layer. The upper part is provided with a storage cover bracket and a telescopic cylinder. In particular, the installation hole and the piston sliding hole of the telescopic cylinder are installed. The piston sliding hole is a waist-shaped hole. The middle layer is the support layer, and the bottom layer is the guide layer. There are slots between the middle layer and the bottom layer. There are three slots in total. The structure of the slot is an inverted T shape. The slot part of the middle layer is small and the slot part of the bottom layer is large. The bottom layer is provided with an arc-shaped guide piece, which is conducive to the separation and falling of the iron plate, and makes the falling speed not slow, ensuring the accuracy and stability of the subsequent acceptance. The three paddles are respectively arranged in the three slots. The side of the paddle exposes the slot to pry the iron cover so that the iron cover is separated and falls into the cover receiving tray below. The position of the paddle is staggered with the position of the storage cover bracket. The paddle is a rotary cutter structure, and the setting height of the three slots decreases in a step-like manner. That is to say, the three slots are not arranged on the same horizontal plane, which is conducive to the slow rotation and fall of the iron plate, while ensuring that the center of gravity of the iron plate remains unchanged, thereby improving the stability of the fall.

[0034] In an embodiment of a positioning method for a conveying and positioning device for round can iron covers, the positioning method is as follows: a. Preparatory work, the push rod cylinder extends to push the tray support to the bottom of the cover separation and cover dropper, so that the cover receiving tray and the cover separation and cover dropper are arranged opposite each other; b. Cover drop work, through the action of three paddles on the cover separation and cover dropper, the iron cover at the bottom of the round can iron cover is peeled off, so that the iron cover falls into the cover receiving tray below; c. Reset action, the push rod cylinder is retracted, and the cover receiving tray with the iron cover is pulled back to the bottom of the capping station to wait for the capping work with the round can. In step b, the cover separation and cover dropper includes a raised annular chassis, three cover storage brackets are arranged on the annular chassis, a telescopic cylinder is arranged on the annular chassis, a paddle is arranged on the inner side of the annular chassis, and a card slot is arranged on the inner wall of the annular ring, and there are three card slots in total, and the three paddles are arranged in the three card slots respectively, and the paddle is a rotary cutter structure, and the setting height of the three card slots decreases in a stepped manner.

[0035] In summary, the present invention also has the following effects:

[0036] 1. According to the operating principle of the structure, the number of capping stations can be increased or decreased to form a series of structures such as parallel single station and parallel three stations.

[0037] 2. Using the method of serial positioning of round cans and parallel positioning of round caps, when there are not many capping stations (single station, double station, triple station, etc.), it can effectively reduce the conveying and positioning time of round caps and improve production efficiency.

[0038] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to the above descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A conveying and positioning device for round can iron covers, the conveying and positioning device is arranged on a conveyor belt, and the conveyor belt conveys round cans. Features: The conveying and positioning device comprises a working platform arranged on the conveyor belt, the working platform is divided into a capping station area and a capping and capping area, a vacuum chamber is arranged above the working platform; the capping station area is provided with a capping station for placing round cans; the capping and capping area is provided with a capping station for matching iron caps, the capping station is provided with a cap-splitting and cap-dropping device and a cap-receiving tray which cooperate with each other up and down; a tray bracket which can slide along the working platform is arranged at the bottom of the working platform, a cap-receiving tray is arranged on the tray bracket, a push rod cylinder is arranged at the bottom of the working platform, the push rod cylinder is connected to the tray bracket, and is used to push the tray bracket to slide back and forth; the cap-splitting and cap-dropping device comprises a raised annular chassis, three cap storage brackets are arranged on the annular chassis, a telescopic cylinder is arranged on the annular chassis, and three paddles are arranged on the inner side of the annular chassis; The annular chassis is composed of three layers of structures. The first layer is the installation layer. The upper part is provided with a storage cover bracket and a telescopic cylinder. The installation hole and the piston sliding hole of the telescopic cylinder are installed. The piston sliding hole is a waist-shaped hole. The middle layer is the support layer. The bottom layer is the guide layer. There are card slots between the middle layer and the bottom layer. There are three card slots in total. The structure of the card slot is inverted T shape. The bottom layer is provided with an arc-shaped guide piece to facilitate the separation and falling of the iron plate. Three paddles are respectively arranged in the three card slots. The side of the paddle exposes the card slot to pry the iron cover so that the iron cover is separated and falls into the cover receiving tray below. The position of the paddle is staggered with the position of the storage cover bracket. The paddle is a rotary cutter structure. The setting heights of the three card slots decrease in a step-like manner, so that the iron plate falls smoothly. Two capping stations and two corresponding iron cover dropping stations are arranged in the middle of the working platform. The two ends of the working platform are triangular and provided with downwardly extending bosses, one of which is embedded with a push rod cylinder; a slide rail is arranged on both sides of the bottom of the working platform, and a slide groove and a sliding bearing matching the slide rail are arranged at both ends of the tray bracket. The slide groove is clamped on the slide rail, and a gap cavity is arranged between the working platform and the tray bracket. A guide sheet is arranged on the side of the gap cavity to correct the stability of the falling iron plate. The height of the gap cavity is the height of the cover dropper 1-1.5 times of the degree; a buffer gasket is provided at one end of the working platform; sealing rings are respectively provided on the upper and lower parts of the cover receiving tray, and the sealing rings are in a trumpet shape, and the large trumpet-shaped end of the sealing ring faces the cover separating and dropping device; an arc-shaped groove is provided on the inner side of the cover receiving tray, and the arc-shaped groove forms an iron plate receiving surface for receiving the iron plate and further adjusting the angle of the iron plate, the upper part of the arc-shaped groove is a concave arc surface, and the lower part is a slightly convex arc surface, the cross-section of the overall arc surface of the arc-shaped groove is S-shaped, and the ratio of the area of ​​the upper concave arc surface to the area of ​​the lower slightly convex arc surface is 2: 1.

3.

2. A conveying and positioning device for round can iron covers according to claim 1, Features: The three storage cover brackets are arranged at the edge of the inner circle of the annular chassis, and the storage cover brackets enclose an iron cover placement cavity for placing the round can iron cover that needs to be sealed and installed.

3. The positioning method of a conveying and positioning device for round can iron lids according to claim 1, characterized in that: The positioning method is as follows: a. Preparation work, the push rod cylinder extends, pushing the tray bracket under the lid separating and dropping device so that the lid receiving tray is directly opposite to the lid separating and dropping device; b. Lid dropping work, through the actions of three paddles on the lid separating and dropping device, the iron lid at the bottom of the round can iron lid is peeled off, so that the iron lid falls into the lid receiving tray below; c. Reset action, the push rod cylinder retracts, pulling the lid receiving tray with the iron lid back to directly below the capping station, waiting for the capping work in cooperation with the round can.

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