A tank cover turning and positioning device

Abstract

The present invention discloses a can lid steering and positioning device, which belongs to the field of packaging detection instruments. The can lid steering and positioning device of the present invention comprises a positioning seat, a positioning member, a first drive assembly and a second drive assembly; the positioning seat is used to place the can lid, the first drive assembly is used to drive the positioning seat to rotate, and the second drive assembly is used to drive the positioning member and the positioning seat to approach or move away from each other; when the positioning seat rotates, the end of the positioning member is used to block the pull ring of the can lid located on the positioning seat, thereby blocking the can lid from continuing to rotate with the positioning seat, thereby keeping the can lid in the positioning position; when the positioning member and the positioning seat are close to each other, they are used to cooperate with the positioning seat to keep the can lid in the positioning position; when the positioning member and the positioning seat are away from each other, the can lid can be placed on the positioning seat or taken out from the positioning seat. The can lid steering and positioning device of the present invention can adjust the direction of the can lid pull ring, and can realize the can lid direction adjustment step on the fully automatic can lid detection equipment.

Description

Technical Field

[0001] The invention relates to the field of packaging detection instruments, and in particular to a can cover turning and positioning device. Background Art

[0002] In the field of can production and manufacturing, testing equipment is generally used to carry out relevant special tests on the can body, can bottom, can cover, etc. to ensure the stability and safety of the can packaging.

[0003] At present, cans are widely used as packaging for beer, beverages, etc. Cans include a can body and a can lid. The can lid includes a lid body, a pull ring, a pull tab, a score line and a rivet. The pull tab is connected to the lid body through the score line. When consumers need to drink the liquid in the can, they just pull the pull ring so that the pull tab is separated from the lid body at the score line. However, since cans are generally used to fill beer and carbonated beverages, and are affected by transportation or temperature, the pressure inside the can body is likely to increase. When the pressure inside the can increases, when consumers pull the pull ring, the pull ring and / or pull tab are likely to fly off due to the internal pressure. When the pull tab flies up, it is easy to cut the eyes of consumers. When the pull ring flies up, it is easy to cause the connection between the pull ring and the pull tab to be disconnected, resulting in the inability to smoothly pull the pull tab. In order to simulate the detection of whether the pull ring is likely to cause the pull ring and / or pull tab to fly off when the pressure of the can lid pull tab increases in the can body, the applicant has developed a can lid pull tab detection device.

[0004] However, the current can lid pull tab detection equipment has the following defects:

[0005] If the can lid pull tab inspection operation is to be performed in batches, the operator is required to manually and sequentially place the can lids on the inspection station, and then accurately adjust the direction of the can lids (i.e., adjust the orientation of the pull rings) so that the position of the pull rings on the can lids is close to the opening device on the inspection equipment used to simulate the human hand pulling the pull rings, so as to ensure that the opening device can be hooked or connected to the pull rings; that is, before performing pull tab inspection on each can lid, the can lids need to be manually placed to adjust the pull ring direction before the inspection equipment can be started for inspection; however, manually adjusting the can lid pull ring orientation makes the inspection process cumbersome and labor-intensive, and wastes manpower. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a can cover turning and positioning device capable of automatically adjusting the direction of a can cover pull ring.

[0007] One of the purposes of the present invention is achieved by the following technical solution:

[0008] A can cover turning and positioning device,

[0009] It includes a positioning seat, a positioning member, a first driving assembly and a second driving assembly;

[0010] The positioning seat is used to place the can cover, the first driving assembly is used to drive the positioning seat to rotate, and the second driving assembly is used to drive the positioning member and the positioning seat to approach or move away from each other;

[0011] When the positioning seat rotates, the end of the positioning member is used to block the pull ring of the can cover located on the positioning seat, thereby preventing the can cover from continuing to rotate with the positioning seat, thereby keeping the can cover in the positioning position; when the positioning member and the positioning seat are close to each other, they are used to cooperate with the positioning seat to keep the can cover in the positioning position; when the positioning member and the positioning seat are away from each other, the can cover can be placed on the positioning seat or taken out from the positioning seat.

[0012] Furthermore, the first driving assembly is used to drive the positioning seat to rotate around a vertical rotation axis.

[0013] Furthermore, the second driving assembly is used to drive the positioning member to move, thereby causing a vertical displacement between the positioning member and the positioning seat.

[0014] Furthermore, the second driving assembly is used to drive the positioning member to rotate around a horizontal rotation axis, thereby driving the positioning member to abut against the tank cover on the positioning seat, or to move away from the positioning seat.

[0015] Further, the first driving assembly includes a motor, a main synchronous wheel, a synchronous belt and a slave synchronous wheel;

[0016] The motor is connected to the main synchronous wheel, the positioning seat is connected to the slave synchronous wheel, and the main synchronous wheel and the slave synchronous wheel are connected through the synchronous belt transmission.

[0017] Furthermore, the second driving assembly includes a rotary cylinder, the positioning member has a positioning end, and the rotary cylinder is used to drive the positioning member to rotate, thereby driving the positioning end to approach or move away from the positioning seat.

[0018] Furthermore, the second driving assembly further comprises a rotating rod and a bearing seat; the rotary driving cylinder is connected to the rotating rod, a bearing is provided in the bearing seat, and the other end of the positioning member is installed in the bearing;

[0019] The rotary cylinder drive is used to drive the rotating rod to rotate around a first direction or a second direction; the first direction is a clockwise direction or a counterclockwise direction, and the second direction is opposite to the first direction;

[0020] When the rotating rod rotates around a first direction, the rotating rod contacts the positioning member and pushes the positioning member to rotate around the bearing, thereby driving the positioning end to rotate in a direction away from the positioning seat; when the rotary cylinder drives the rotating rod to rotate around a second direction, the rotating rod separates from the positioning member, so that the positioning member rotates around the bearing under the action of its own weight, thereby driving the positioning end to rotate in a direction close to the positioning seat.

[0021] Furthermore, the positioning member includes a rod body and a stopper, wherein the stopper extends from the end of the rod body toward the positioning seat, and the stopper is used to block the tank cover.

[0022] Furthermore, the positioning seat includes a positioning male seat and a positioning female seat, the positioning male seat is provided with a positioning groove for placing the can cover, the positioning male seat and the positioning female seat are detachably connected, the positioning female seat is connected to the first driving assembly, and the first driving assembly drives the positioning male seat to rotate by driving the positioning female seat to rotate.

[0023] Furthermore, the positioning male seat and the positioning female seat are connected in a square-circle manner; the positioning male seat or the positioning female seat is provided with a square-circle plug, and the positioning female seat or the positioning male seat is provided with a square-circle slot, and the square-circle plug is inserted into the square-circle slot;

[0024] The steering positioning device also includes a mounting plate, and the first drive assembly, the second drive assembly, the positioning member, and the positioning seat are mounted on the mounting plate.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] By arranging the cooperation between the positioning seat and the positioning piece, the characteristic that the can cover pull ring on the positioning seat protrudes relative to the can cover surface can be utilized, so that when the positioning piece and the positioning seat are relative to each other, the can cover can be kept in the positioning position by blocking the positioning piece or the can cover pull ring, so that the direction of the can cover pull ring can be unified;

[0027] The can cover steering and positioning device can realize the can cover direction adjustment steps on the full-automatic can cover detection equipment, and is the key to realize full-automatic can cover detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the tank cover turning and positioning device of the present invention;

[0029] Figure 2 A top view of the can cover turning and positioning device of the present invention Figure 1 (The tank cover is not in the positioning position);

[0030] Figure 3A top view of the can cover turning and positioning device of the present invention Figure 2 (the tank cover is in the positioning position);

[0031] Figure 4 The diagram is a schematic diagram showing the matching relationship between the positioning member and the positioning seat of the can cover turning positioning device of the present invention. Figure 1 ;

[0032] Figure 5 The diagram is a schematic diagram showing the matching relationship between the positioning member and the positioning seat of the can cover turning positioning device of the present invention. Figure 2 ;

[0033] Figure 6 It is a schematic diagram of the structure and matching relationship of the positioning male seat and the positioning female seat of the present invention;

[0034] In the figure: 10, can cover; 11, pull ring; 20, positioning piece; 21, stopper; 30, positioning seat; 31, positioning male seat; 32, positioning female seat; 41, motor; 42, slave synchronous wheel; 51, rotating cylinder; 52, rotating rod; 53, bearing seat; 60, mounting plate. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0036] In the description of the invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "horizontal", "vertical", "top", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the invention. In addition, the terms "first", "second", "one", "another" and the like are used to distinguish similar elements, and these terms and other similar terms are not intended to limit the scope of the invention.

[0037] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internally connected between two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0038] It should be noted that, in the present invention, the positioning of the pull ring 11 of the can cover 10 refers to adjusting the direction of the end of the pull ring 11 away from the rivet to a preset direction, at which time the can cover 10 is located at the positioning position. The preset position can be adjusted by those skilled in the art according to the relative position between the placement area of ​​the can cover to be inspected and the inspection station of the can cover 10.

[0039] It should be noted that the can lid steering and positioning device of the present embodiment is suitable for full-automatic can lid detection equipment, which also includes a can lid placement area to be detected, a lid removal and lid feeding mechanism, and a pull-tab detection device. The lid removal and lid feeding mechanism is used to take out the can lid 10 from the can lid placement area to be detected and send it to the can lid steering and positioning device of the present embodiment. The can lid 10 after steering and positioning is taken out by the lid removal and lid feeding mechanism and sent to the pull-tab detection device. Since the lid removal path between the can lid steering and positioning device and the pull-tab detection device is fixed, those skilled in the art can set a suitable can lid positioning position so that the can lid 10 sent to the pull-tab detection device makes the pull ring 11 of the can lid 10 face the pull hook of the pull-tab detection device, and the pull hook can hook up the pull ring 11 of the can lid 10 to perform pull-tab flying detection. The can lid steering and positioning device, applied to the full-automatic can lid detection equipment, can realize the direction adjustment step of the can lid 10, and is the key to realizing full-automatic can lid detection.

[0040] like Figure 1-6 As shown, this embodiment provides a tank cover steering positioning device, including a positioning seat 30, a positioning member 20, a first drive assembly and a second drive assembly; the positioning seat 30 is used to place the tank cover 10, and the first drive assembly is used to drive the positioning seat 30 and / or the positioning member 20, so that the positioning member 20 and the positioning seat 30 are configured to be able to rotate relative to each other; the second drive member is used to drive the positioning seat 30 and / or the positioning member 20, so that the end of the positioning member 20 abuts against the tank cover 10 located on the positioning seat 30.

[0041] Specifically, when the end of the positioning member 20 abuts against the surface of the tank cover 10 and the positioning member 20 and the positioning seat 30 rotate relative to each other, the positioning member 20 is used to block the pull ring 11 of the tank cover 10 to prevent the tank cover 10 from continuing to rotate with the positioning seat 30, thereby keeping the tank cover 10 in the positioned position, or the positioning member 20 is used to push the pull tab on the tank cover 10 to push the tank cover 10 to rotate relative to the positioning seat 30, so as to push the tank cover 10 to the positioned position.

[0042] Preferably, in order to ensure that the positioning member 20 is only used to block the pull ring 11 of the tank cover 10 during the relative rotation between the positioning member 20 and the positioning seat 30, and does not affect the position of the tank cover 10 when the positioning member 20 does not abut the pull ring 11 of the tank cover 10, the positioning member 20 is a positioning rod, and the end of the positioning rod has a stopper 21 extending toward the positioning seat 30, and the stopper 21 is used to abut the surface of the tank cover 10, and is used to block or push the pull ring 11 of the tank cover 10 when the positioning member 20 and the positioning seat 30 rotate relative to each other.

[0043] Preferably, in order to facilitate the placement of the can cover 10, a placement area for placing the can cover 10 is provided at the upper end of the positioning seat 30, and the positioning member 20 and the positioning seat 30 are configured to rotate relative to each other around a vertical rotation axis to cooperate in achieving the rotation and positioning of the can cover 10.

[0044] Preferably, in order to facilitate the external cover taking and feeding mechanism to place the can cover 10 to be positioned on the positioning seat 30, or to take out the positioned can cover 10, the end of the positioning member 20 and the positioning seat 30 are configured to be relatively far away from or close to each other; more specifically, in order to facilitate the placement of the can cover 10, the top of the positioning seat 30 close to the positioning member 20 is a placement area, and the placement area is used to place the can cover 10. Since the top surface of the can cover 10 is concave relative to the edge of the can cover 10, if the positioning member 20 is to be relatively far away from the positioning seat 30, it cannot be simply achieved by horizontal displacement. Therefore, the positioning member 20 and the positioning seat 30 of this embodiment are configured to be relatively displaced in the vertical direction, so that when the can cover 10 needs to be placed on the positioning seat 30 from the outside, the positioning member 20 and the positioning seat 30 can be far away from each other, and when the can cover 10 needs to be positioned, the positioning member 20 and the positioning seat 30 can be close to each other, so that the end of the positioning member 20 abuts against the surface of the can cover 10.

[0045] Preferably, the first drive assembly is used to drive the positioning seat 30 to rotate around the vertical rotation axis; the second drive assembly is used to drive the positioning member 20 or the positioning seat 30 to move, so that the positioning member 20 and the positioning seat 30 can be relatively displaced in the vertical direction to facilitate the external cover delivery mechanism to place or remove the cover.

[0046] Preferably, the second driving assembly is used to drive the positioning member 20 to move, so that a vertical displacement occurs between the positioning member 20 and the positioning seat 30. Of course, in some other embodiments, the positioning seat 30 can also be driven downward by the second driving assembly to leave a space between the positioning member 20 and the positioning seat 30 to facilitate the external cap removal and delivery mechanism to place or remove the cap.

[0047] In this embodiment, the first drive component drives the positioning seat 30 to rotate to achieve relative rotation, and the second drive component drives the positioning rod to move to achieve relative displacement. The relative movement in two dimensions is distributed to the two components for execution respectively. Compared with driving the positioning seat 30 to rotate through the first drive component and driving the positioning member 20 to vertically displace through the second drive component, the overall structure can be simplified.

[0048] Preferably, in order to facilitate the setting of the driving assembly, the second driving assembly is used to drive the positioning member 20 to rotate around the horizontal rotation axis, so as to drive the positioning member 20 to abut against the tank cover 10 on the positioning seat 30, or to move away from the positioning seat 30. Of course, in some other embodiments, the second driving assembly can also be used to drive the positioning member 20 to perform lifting and lowering movements to achieve relative vertical displacement.

[0049] Based on the above structure, the working principle of the tank cover steering and positioning device of this embodiment is as follows:

[0050] The can cover 10 is grabbed or sucked from the inspection area to the steering positioning device by using a cover removal mechanism with suction (or grabbing) and loosening functions; after the cover removal mechanism places the can cover 10 on the positioning seat 30, the positioning seat 30 rotates around its vertical rotation axis, while the positioning rod does not rotate; the positioning seat 30 drives the can cover 10 to rotate, and when the positioning seat 30 rotates 360 degrees, if the block 21 will definitely touch the relatively protruding pull ring 11 on the can cover 10, when the block 21 hits the pull ring 11, the pull ring 11 is blocked by the block 21, and the block 21 blocks the can cover 10 and keeps it in the current position. At this time, the can cover 10 does not continue to rotate with the positioning seat 30, so that the direction of the pull ring 11 of the can cover 10 does not change. , that is, the positioning of the can cover 10 is completed, the direction of the pull ring 11 on the can cover 10 is stable at that position and does not change, and the can cover 10 is blocked by the positioning rod to the current positioning position; and since the relative position between the steering positioning device and the pull-tab detection mechanism is determined, the cover taking mechanism is used to send the cover along a fixed path to grab the can cover 10 from the steering positioning seat 30 to the pull-tab detection mechanism, and then place it on the pull-tab detection mechanism. The direction of the pull ring 11 of the can cover 10 on the detection station is only related to the setting of the positioning member 20. Those skilled in the art can set the specific parameters of the steering positioning device (such as: the number of rotations and the rotation angle of the positioning seat 30 or the positioning rod) according to the specific needs of the detection, so as to realize the steering positioning of the can cover 10.

[0051] Among them, on the basis of the above structure, that is, when the stopper 21 at the end of the positioning rod abuts against the can cover 10, the positioning seat 30 rotates one circle, that is, within the range of 360 degrees, the stopper 21 of the positioning rod will definitely block the pull ring 11 of the can cover 10, such as Figure 2 ,and Figure 3As shown, after the positioning seat 30 rotates a certain angle, the pull ring 11 of the can cover 10 can be blocked by the stopper 21 on the positioning rod, so that the can cover 10 is positioned at the current position. When the positioning rod does not rotate around the vertical rotation axis, but the positioning seat 30 rotates around the vertical rotation axis, the positioning position of the can cover 10 is specifically determined by the position of the stopper 21 of the positioning rod.

[0052] In some other embodiments, the positioning rod can also be driven to rotate around the vertical rotation axis by the first driving component, while the positioning seat 30 does not rotate. In this case, when the positioning rod rotates 360 degrees, it will definitely push against the relatively protruding pull ring 11 on the tank cover 10, which will drive the tank cover 10 to rotate relative to the positioning seat 30. When the positioning rod stops rotating, the tank cover 10 stops at the positioning position. At this time, the positioning position of the tank cover 10 is specifically determined by the position where the positioning rod stops rotating, and those skilled in the art can set it according to actual needs.

[0053] In some other embodiments, a motor 41 may be provided through the first driving assembly to respectively drive the positioning rod and the positioning seat 30 to rotate around the vertical rotation axis, thereby realizing the positioning function of the tank cover 10 .

[0054] Preferably, regarding the structural setting of the first drive assembly, the first drive assembly of this embodiment includes a motor 41, a main synchronous wheel, a synchronous belt and a slave synchronous wheel 42; the motor 41 is connected to the main synchronous wheel, the positioning seat 30 is connected to the slave synchronous wheel 42, and the main synchronous wheel and the slave synchronous wheel 42 are connected through a synchronous belt transmission; the motor 41 is a single-phase motor 41. The reason for this setting is that the synchronous belt transmission can maintain a strict transmission ratio and has a compact structure. The motor 41 drives the positioning seat 30 to rotate by using the synchronous belt and the synchronous wheel, so that even if the stopper 21 of the positioning rod abuts against and blocks the tank cover 10, the positioning seat 30 can be driven to continue to rotate without excessive wear of the transmission assembly due to the action of the stopper 21.

[0055] In some other embodiments, the motor 41 may also be used to drive the positioning seat 30 to rotate through other transmission components.

[0056] Preferably, in order to prevent the can cover 10 from being deformed or damaged when positioning the can cover 10, and to automatically adapt to the height of the can cover 10, the structure of the second driving assembly in this embodiment is implemented in the following manner:

[0057] The second driving assembly also includes a rotating cylinder 51, a rotating rod 52 and a bearing seat 53. The rotating driving cylinder is connected to the rotating rod 52. A bearing is arranged in the bearing seat 53. One end of the positioning member 20 is used for positioning the tank cover 10, and the other end is installed in the bearing. The positioning member 20 can rotate around the bearing; the rotating cylinder 51 is used to drive the rotating rod 52 to rotate counterclockwise or clockwise; the positioning member 20 and the rotating rod 52 are in contact with each other, and the specific cooperation method is as follows:

[0058] When the rotating rod 52 rotates counterclockwise under the drive of the rotating cylinder 51, the rotating rod 52 contacts the positioning member 20 and pushes the positioning member 20 to rotate counterclockwise around the bearing, thereby driving the positioning end to rotate in a direction away from the positioning seat 30, so as to facilitate the lid taking and placing operation on the positioning seat 30; when the rotating rod 52 rotates clockwise under the drive of the rotating cylinder 51, the rotating rod 52 separates from the positioning member 20, so that the positioning member 20 rotates clockwise around the bearing under the action of its own weight, thereby driving the positioning end to rotate in a direction close to the positioning seat 30, until the positioning end of the positioning member 20 hits the tank cover 10, so that the positioning member 20 can resist the relatively protruding pull ring 11 on the tank cover 10, which can play a positioning role in stopping the tank cover 10 at the positioning position.

[0059] On the basis of the structure of the above-mentioned second driving component, the rotating cylinder 51 is used to drive the positioning end of the positioning member 20 to rotate away from the positioning seat 30, so as to facilitate the lid placing and removing operations on the positioning seat 30; the rotating cylinder 51 can also be used to drive the rotating rod 52 to contact and separate with the positioning member 20, so that the positioning end of the positioning member 20 can fall onto the tank cover 10 under the action of gravity, and the positioning end is abutted against the tank cover 10 by gravity, which can avoid damage to the tank cover 10 and is conducive to ensuring the accuracy of subsequent tank cover 10 detection.

[0060] In some other embodiments, the positioning member 20 may also be directly connected to the rotating rod 52 to drive the positioning member 20 to rotate.

[0061] Specifically, the tank cover steering and positioning device further comprises a mounting seat, and the bearing seat 53 and the rotating cylinder 51 are fixed to the mounting seat.

[0062] Preferably, in order to meet the steering positioning requirements of different sizes of tank covers 10, the positioning seat 30 includes a positioning male seat 31 and a positioning female seat 32. The positioning male seat 31 is provided with a positioning groove for placing the tank cover 10. The positioning male seat 31 and the positioning female seat 32 are detachably connected and can transmit torque. The positioning female seat 32 is connected to the first drive component, and the first drive component drives the positioning male seat 31 to rotate by driving the positioning female seat 32; that is, when the size of the tank cover 10 is different, the positioning male seat 31 with different positioning groove sizes can be replaced. When replacing, it is only necessary to disassemble and assemble the positioning male seat 31 and the positioning female seat 32.

[0063] Preferably, in order to facilitate the disassembly and assembly of the positioning male seat 31 and to ensure that the positioning female seat 32 can drive the positioning male seat 31 to rotate when it rotates, the positioning male seat 31 and the positioning female seat 32 are connected in a square and round manner; the positioning male seat 31 or the positioning female seat 32 is provided with a square and round plug, and the positioning female seat 32 or the positioning male seat 31 is provided with a square and round slot, and the square and round plug is inserted in the square and round slot.

[0064] Specifically, a square mounting groove is provided on the side of the positioning male seat 31 away from the positioning groove, and a circular mounting hole connected to the square mounting groove is also provided. A square mounting block is provided at the end of the positioning female seat 32, and a circular mounting column is provided on the square mounting block. When the positioning male seat 31 and the positioning female seat 32 are plugged in, the square mounting groove is inserted in the square mounting groove, and the circular mounting column is inserted in the circular mounting hole; in this way, when the positioning male seat 31 needs to be replaced, it is only necessary to pull up the positioning male seat 31; and when the positioning male seat 31 and the positioning female seat 32 are plugged in, due to the effect of the square positioning, the rotation of the positioning female seat 32 can drive the rotation of the positioning male seat 31 to ensure the steering positioning operation.

[0065] Preferably, the steering positioning device further comprises a mounting plate 60 , and the first driving assembly, the second driving assembly, the positioning member 20 , and the positioning seat 30 are mounted on the mounting plate 60 .

[0066] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A can cover steering and positioning device, characterized in that: It includes a positioning seat, a positioning member, a first driving assembly and a second driving assembly; The positioning seat is used to place the can cover, the first driving assembly is used to drive the positioning seat to rotate, and the second driving assembly is used to drive the positioning member and the positioning seat to approach or move away from each other; When the positioning seat rotates, the end of the positioning member is used to block the pull ring of the can cover located on the positioning seat, thereby blocking the can cover from continuing to rotate with the positioning seat, thereby keeping the can cover in the positioning position; when the positioning member and the positioning seat are close to each other, they are used to cooperate with the positioning seat to keep the can cover in the positioning position; when the positioning member and the positioning seat are away from each other, the can cover can be placed on the positioning seat or taken out from the positioning seat; The second driving assembly includes a rotating cylinder, the positioning member has a positioning end, and the rotating cylinder is used to drive the positioning member to rotate around a horizontal rotation axis, thereby driving the positioning end to abut the tank cover on the positioning seat or away from the positioning seat; the second driving assembly also includes a rotating rod and a bearing seat; the rotating cylinder is connected to the rotating rod, and a bearing is provided in the bearing seat, and the other end of the positioning member is installed in the bearing; the rotating cylinder is driven to drive the rotating rod to rotate around a first direction or a second direction; the first direction is a clockwise direction or a counterclockwise direction, and the second direction is opposite to the first direction; when the rotating rod rotates around the first direction, the rotating rod contacts the positioning member and pushes the positioning member to rotate around the bearing, thereby driving the positioning end to rotate in a direction away from the positioning seat; when the rotating cylinder drives the rotating rod to rotate around the second direction, the rotating rod is separated from the positioning member, so that the positioning member rotates around the bearing under the action of its own weight, thereby driving the positioning end to rotate in a direction close to the positioning seat, the positioning end abuts the tank cover and the positioning end automatically adapts to the height of the tank cover; The positioning seat includes a positioning male seat and a positioning female seat. The positioning male seat is provided with a positioning groove for placing the can cover. The positioning male seat and the positioning female seat are detachably connected. The positioning female seat is connected to the first driving component. The first driving component drives the positioning female seat to rotate, thereby driving the positioning male seat to rotate.

2. The can cover turning and positioning device according to claim 1, characterized in that: The first driving assembly is used to drive the positioning seat to rotate around a vertical rotation axis.

3. The can cover turning and positioning device according to claim 2, characterized in that: The first driving assembly includes a motor, a main synchronous wheel, a synchronous belt and a slave synchronous wheel; The motor is connected to the main synchronous wheel, the positioning seat is connected to the slave synchronous wheel, and the main synchronous wheel and the slave synchronous wheel are connected through the synchronous belt transmission.

4. The can cover turning and positioning device according to claim 1, characterized in that: The positioning member comprises a rod body and a stopper, wherein the stopper extends from the end of the rod body toward the positioning seat, and the stopper is used to stop the tank cover.

5. The can cover turning and positioning device according to claim 1, characterized in that: The positioning male seat and the positioning female seat are connected in a square and round manner; the positioning male seat or the positioning female seat is provided with a square and round plug, and the positioning female seat or the positioning male seat is provided with a square and round slot, and the square and round plug is inserted into the square and round slot; The steering positioning device also includes a mounting plate, and the first drive assembly, the second drive assembly, the positioning member, and the positioning seat are mounted on the mounting plate.

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