Cap orientation feeding mechanism, method of using the same and full-automatic bottle cap screwing mechanism

Abstract

The application discloses a cap directional feeding mechanism and a full-automatic bottle cap screwing mechanism, which comprises a hopper obliquely arranged on a rack, wherein the bottom of the hopper is provided with a discharge port on one side; a feeding disc is rotatably arranged at the bottom of the hopper and is uniformly provided with a group of feeding grooves on the edge thereof; a directional mechanism comprises a group of ejectors and a magnetic driving mechanism, the bottom of each feeding groove is slidably provided with an ejector, the top of the ejector is flush with the top of the feeding groove to limit the placement direction of the cap placed in the feeding groove, the magnetic driving mechanism is arranged at the bottom of the ejector and drives the ejector to extend and retract relative to the feeding groove by changing the polarity; and a cutting mechanism comprises a pushing tooth located above the feeding groove and provided with an inclined cutting surface, the inclined cutting surface and the inner wall of the hopper form a gradually reduced caliber nip to cut the cap into the discharge port. The directional automatic feeding of the cap and the automatic screwing and assembling of the bottle body and the cap are realized by the ejector and the magnetic driving mechanism.

Description

Technical Field

[0001] This invention relates to the field of assembly equipment for capped bottles, specifically to a cap-oriented feeding mechanism and its usage method, and a fully automatic cap screwing mechanism. Background Technology

[0002] Bottles with caps are common containers in daily life and have a wide range of applications. After production, the caps and bottles are usually screwed together and shipped together, which requires a lot of manpower. Existing mechanisms for automatic feeding of caps and bottles exist, but they are basically vibratory feeders or elevators, which occupy a large area and are noisy. At the same time, vibratory feeders or elevators have difficulty in positioning the caps being fed, making it difficult to achieve automatic screwing between the caps and bottles.

[0003] Some existing feeding mechanisms combine pneumatic mechanisms to position the cap by blowing air. However, blowing air can easily stir up dust and contaminate the inside of the cap, especially for laboratories with high cleanliness requirements. The inside of the cap and bottle after they are screwed together cannot meet the high cleanliness requirements. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a cap orientation feeding mechanism and its usage method, as well as a fully automatic bottle cap screwing mechanism.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] The cover-oriented feeding mechanism includes a hopper, inclinedly mounted on a frame for loading covers, with a discharge port on one side of the upturned bottom of the hopper; a picking tray, rotatably mounted at the bottom of the hopper, with a set of picking grooves evenly distributed along the edge of the picking tray to match the cover, the depth of the picking grooves being less than the height of the cover; an orientation mechanism including a set of ejector pins and a magnetic drive mechanism, with an ejector pin slidably passing through the bottom axis of each picking groove, the top of the ejector pin being flush with the top of the picking groove to define the placement direction of the cover placed in the picking groove, the magnetic drive mechanism being located at the bottom of the ejector pins and driving the ejector pins to extend and retract relative to the picking grooves by changing their polarity; and a cutting mechanism including pusher teeth, located above the picking grooves and having a beveled surface inclined towards the discharge port, the beveled surface and the inner wall of the hopper forming a jaw with a gradually narrowing diameter to cut the cover into the discharge port.

[0007] Preferably, the magnetic drive mechanism includes a set of follower magnets and cam magnets. The follower magnets are fixed to the bottom of the ejector pin, and the cam magnets are arranged in pairs around the bottom of the hopper. The hopper is divided into a loading area and a discharge area according to the position of the discharge port. The top of the cam magnet in the loading area has the same polarity as the follower magnet to drive the ejector pin to eject. The top of the cam magnet in the discharge area has the opposite polarity to the follower magnet to drive the ejector pin to retract.

[0008] Preferably, the ejector pin has a retaining ring, the bottom of the feeding tray is provided with an annular fixing plate, the fixing plate is provided with a through hole facing the feeding groove, a sleeve is fixedly connected to the bottom of the through hole, the ejector pin passes through the through hole and is inserted into the sleeve, and the retaining ring abuts against the fixing plate.

[0009] Preferably, a spring is fitted on the ejector pin, and the two ends of the spring abut against the fixing ring and the follower magnet, respectively.

[0010] Preferably, a material-pushing tooth is fixed above the pushing tooth. The inner wall of the material-pushing tooth is a second oblique surface, and its outer wall is an arc surface that matches the material bin. The distance between the material-pushing tooth and the material-taking groove is greater than the height of one cover and less than the height of two covers.

[0011] Preferably, the discharge port is connected to a material channel, the inner wall of the material channel is a slope, the slope of the slope is consistent with that of the beveled surface to form a channel that is compatible with the cover, and the material channel extends downward at an incline.

[0012] The method of using the cover directional feeding mechanism as described above includes:

[0013] S1, Place a set of covers into the hopper;

[0014] S2. Drive the material taking plate to rotate. The cover is driven by the centrifugal force of the material taking plate to move into the material taking groove. The ejector pin in the material carrying area is pushed out, so that the cover in the material taking groove is open downward and covered on the ejector pin.

[0015] S3. The material-removing teeth remove the stacked covers in the material-removing slots, so that each material-removing slot has only one cover.

[0016] S4. The ejector pin in the discharge area retracts, and the cover in the feeding groove slides into the material channel along the inclined surface of the pusher tooth.

[0017] The fully automatic bottle cap screwing mechanism includes, as described above, a cap orientation feeding mechanism, a cap feeding mechanism, a bottle feeding mechanism, and a bottle cap screwing mechanism.

[0018] Preferably, the cap feeding mechanism includes a cap feeding motor and a fan-shaped turntable. The turntable has a groove with a width adapted to the cap body along its edge. The groove has a stop arm along its center line. The front end of the groove has a material inlet adapted to the cap body. The material inlet is connected to the material channel. The turntable is driven by the cap feeding motor to rotate relative to the material channel to move the cap body to the bottle cap screwing mechanism.

[0019] Preferably, the cap screwing mechanism includes a cap gripper, a bottle gripper, a cap lifting cylinder, and a rotary motor. The frame is provided with a positioning port. The cap gripper is located above the axis of the positioning port and is used to grip the cap. The gripping end of the bottle gripper is located below the axis of the positioning port and is used to grip the bottle. The cap lifting cylinder and the rotary motor drive the cap gripper to grip the cap and screw it onto the bottle.

[0020] Preferably, the bottle feeding mechanism includes a feeding platform, a feeding tray, and a push rod. A set of feeding trays are spaced apart on the feeding platform. Each feeding tray has a set of limiting holes for inserting bottles. The feeding platform is located below the positioning port, and the bottom of the feeding platform is aligned with the clamping end of the bottle gripper via an X-axis moving mechanism and a Y-axis moving mechanism. The push rod is located below the feeding tray and aligned with the axis of the positioning port. The push rod is driven by a push cylinder to push the bottle out of the feeding tray.

[0021] The beneficial effects of this invention are mainly reflected in:

[0022] 1. The material picking tray is set up to automatically pick up materials by rotation. A pin is set in the picking slot, and a magnetic drive mechanism is set up to flexibly control the extension and retraction of the pin by changing the polarity of the magnetic force. This allows the pin to push out in the loading area to define the direction of the cover moving into the picking slot; and to retract in the discharge area to facilitate the cover being pushed into the material channel in a defined direction for feeding. This realizes the automated directional feeding of the cover, saves labor and improves efficiency.

[0023] 2. The material-pulling teeth are set to peel off the stacked covers, ensuring that there is only a single cover in the material picking groove. This makes it easier for the material-pushing teeth to push the cover into the material channel and slide it out, avoiding blockage and jamming. Both the material-pulling teeth and the material-pushing teeth use beveled surfaces to cooperate with the rotation of the material picking plate to push the cover. No additional power mechanism is required, and the structure is stable and effective, saving costs.

[0024] 3. The turntable in the cover feeding mechanism is equipped with a stop arm on its edge. The front end of the stop arm is the material inlet. During the rotation, the stop arm pushes the cover body on the one hand and blocks the cover body in the material channel on the other hand, thus separating the two covers. Attached Figure Description

[0025] The technical solution of the present invention will be further described below with reference to the accompanying drawings:

[0026] Figure 1 Schematic diagram of the cover directional feeding mechanism;

[0027] Figure 2 : Schematic diagram of the magnetic drive mechanism in the cover directional feeding mechanism;

[0028] Figure 3 : Partial structural diagram of the cover directional feeding mechanism;

[0029] Figure 4 Schematic diagram of a fully automatic bottle cap screwing mechanism;

[0030] Figure 5 : Partial structural diagram of the fully automatic bottle cap screwing mechanism. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0032] In the description of the solution, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Also, in the description of the solution, with the operator as a reference, the direction closer to the operator is the proximal end, and the direction farther from the operator is the distal end.

[0033] like Figures 1 to 3As shown, this invention discloses a cover-oriented feeding mechanism, including a hopper 1, inclinedly mounted on a frame 11 for loading covers 100, with a discharge port 101 on one side of the upturned bottom of the hopper 1; a feeding tray 2, rotatably mounted on the bottom of the hopper 1, with a set of feeding grooves 201 evenly distributed along the edge of the feeding tray 2, matching the covers 100, the depth of the feeding grooves 201 being less than the height of the covers 100; and an orientation mechanism including a set of ejector pins 3 and a magnetic drive mechanism, with an ejector pin 3 slidably passing through the bottom axis of each feeding groove 201. The top of the ejector pin 3 is flush with the top of the feeding trough 201 to define the placement direction of the cover 100 contained in the feeding trough 201. The magnetic drive mechanism is located at the bottom of the ejector pin 3 and drives the ejector pin 3 to extend and retract relative to the feeding trough 201 by changing its polarity. The cutting mechanism includes a pusher tooth 8 located above the feeding trough 201 and having a beveled surface 801 inclined towards the discharge port 101. The beveled surface 801 and the inner wall of the hopper 1 form a jaw with a gradually narrowing diameter to cut the cover 100 into the discharge port 101. The hopper 1 has an openable and closable cover, and the bottom of the feeding disc 2 is provided with a drive motor (not shown in the figure) that drives its rotation.

[0034] Specifically, such as Figure 1 and Figure 2 As shown, the magnetic drive mechanism includes a set of follower magnets 4 and cam magnets 5. The follower magnets 4 are fixed to the bottom of the ejector pin 3. The cam magnets 5 are arranged in pairs around the bottom of the hopper 1, and are divided into a loading area and a discharge area according to the position of the discharge port 101. In the loading area, the top of the cam magnet 5 has the same polarity as the follower magnet 4 to drive the ejector pin 3 to push out. In the discharge area, the top of the cam magnet 5 has the opposite polarity to the follower magnet 4 to drive the ejector pin 3 to retract. The cam magnets 5 are directly opposite to the follower magnets 4, and the cam magnets 5 are arranged in pairs adjacent to each other, so that there is a corresponding cam magnet 5 whenever the follower magnet 4 rotates to any position.

[0035] The discharge port 101 is strip-shaped. The area corresponding to the position of the discharge port 101 is the discharge area, and the other areas are the loading area. In the loading area, the follower magnet 4 and the cam magnet 5 repel each other with the same poles, creating a gap between them to ensure the smooth rotation of the picking plate 2. At the same time, the repulsive force between them keeps the ejector pin 3 in an extended state, so that the ejector pin 3 is always present in the picking groove 201 in the loading area to limit the direction of the cover 100 inside. In the discharge area, the cam magnet 5 and the follower magnet 4 attract each other with opposite poles, causing the ejector pin 3 to descend with the follower magnet 4 and retract to the bottom of the picking groove 201, allowing the cover 100 inside the picking groove 201 to move freely.

[0036] Furthermore, the ejector pin 3 has a retaining ring 301, and an annular fixing plate 7 is provided at the bottom of the feeding tray 2. The fixing plate 7 has a through hole 701 facing the feeding groove 201. A sleeve 702 is fixedly connected to the bottom of the through hole 701. The ejector pin 3 passes through the through hole 701 and is inserted into the sleeve 702. The retaining ring 301 abuts against the fixing plate 7. The sleeve 702 guides the ejector pin 3, ensuring its extension and retraction stability. The retaining ring 301 prevents the ejector pin 3 from coming out of the sleeve 702.

[0037] A spring 6 is fitted onto the ejector pin 3, with its two ends abutting against the fixing ring 7 and the follower magnet 4, respectively. The spring 6 and the cam magnet 5 provide dual protection for the ejector pin 3. The spring 6 applies a downward force to the ejector pin 3 from a mechanical perspective, ensuring that the ejector pin 3 retracts quickly after the cam magnet 5 is no longer present in the discharge area and repels it. This prevents the cam magnet 5 in the discharge area from malfunctioning or becoming too weak, thus preventing jamming and ensuring that the cover 100 can be pushed out from the discharge port 101.

[0038] Furthermore, in another feasible embodiment, the discharge area may not be equipped with the cam magnet 5. The ejector pin 3 in the discharge area is driven to descend entirely by the elastic force of the spring 6, which can also drive the ejector pin 3 to retract and contact the obstruction of the cover 100.

[0039] like Figures 1-3As shown, a pushing tooth 9 is fixed above the pushing tooth 8. The inner wall of the pushing tooth 9 is a second oblique surface 901, and its outer wall is an arc surface that matches the material bin 1. The distance between the pushing tooth 9 and the material chute 201 is greater than the height of one cover 100 and less than the height of two covers 100. The pushing tooth 9 can use its second oblique surface 901 to separate the covers 100 stacked in the material chute 201, so that only one cover 100 passes through the material chute 201, thus ensuring the smooth ejection of the cover 100 from the outlet 101 and avoiding blockage and jamming caused by multiple covers 10- stacked.

[0040] The discharge port 101 is connected to a material channel 10. The inner wall of the material channel 10 is inclined, and the inclination of the inclined surface 801 is consistent with that of the cover 100 to form a channel adapted to the cover 100. The material channel 10 extends downward at an angle, allowing the cover 100 to slide down along the material channel 10 under its own weight. The feeding teeth 9 and the pushing teeth 8 both use their inclined surfaces to cooperate with the rotation of the material picking plate 2 to push the cover 100. This structure is stable and effective, and does not require a separate power mechanism, saving costs. In a preferred embodiment, the upper part of the material channel 10 can be inclined downward along the outer wall of the hopper 1 to facilitate the smooth sliding of the cover 100.

[0041] Furthermore, the method of using the cover-oriented feeding mechanism as described above includes:

[0042] S1, Place a set of covers 100 into the hopper 1;

[0043] S2. Drive the material taking plate 2 to rotate. The cover 100 is driven by the centrifugal force of the material taking plate 2 to move into the material taking groove 201. The ejector pin 3 in the material carrying area is pushed out, so that the cover 100 in the material taking groove 201 is all open downwards and covered on the ejector pin 3.

[0044] S3. The feeding teeth 9 remove the stacked covers 100 in the feeding slot 201, so that each feeding slot 201 has only one cover 100.

[0045] S4. The ejector pin 3 in the discharge area retracts, and the cover 100 in the material receiving groove 201 slides into the material channel 10 along the inclined surface 801 of the pusher tooth 8.

[0046] The present invention configures the material receiving tray 2 to automatically pick up materials by rotating. A push pin 3 is provided in the material receiving groove 201. At the same time, a magnetic drive mechanism is provided to flexibly control the extension and retraction of the push pin 3 by changing the polarity of the magnetic force. The push pin 3 pushes out in the material loading area to define the direction of the cover 100 that moves into the material receiving groove 201; and retracts in the material discharge area to facilitate the cover 100 being pushed into the material channel 10 in a defined direction for feeding. This realizes the automated directional feeding of the cover 100, saves labor, and improves efficiency.

[0047] Furthermore, the present invention also discloses a fully automatic bottle cap screwing mechanism, including the cap body orientation feeding mechanism as described above, and also including a cap feeding mechanism, a bottle body feeding mechanism and a bottle cap screwing mechanism.

[0048] Specific examples Figure 1 and Figure 5 As shown, the cap feeding mechanism includes a cap feeding motor 12 and a fan-shaped turntable 13. The arc length of the fan shape of the turntable 13 is set according to the rotation requirements. The cap feeding motor 12 is preferably a servo motor to drive the turntable 13 to rotate at a limited degree, so that the turntable 13 can stop at a set position after rotation. The edge of the turntable 13 is provided with a groove 1301 with a width adapted to the cap body 100. The groove 1301 is connected to the bottom port of the material channel 10 to receive the sliding cap body 100. Further, the groove 1301 is provided with a stop arm 1302 along its center line. The front end of the groove 1301 has a material picking port 1303 adapted to the cap body 100. The material picking port 1303 is connected to the material channel 10, so that only one cap body 100 can slide into the groove 1301 at a time. The turntable 13 is driven by the cap feeding motor 11 to rotate relative to the feed channel 10, thereby transferring the cap 100 to the cap screwing mechanism. During this process, the stop arm 1302 pushes the cap 100, causing it to rotate synchronously with the turntable 13; on the other hand, the stop arm 1302 can also block the caps 100 in the feed channel 10, separating two caps 100 and preventing them from falling continuously.

[0049] The bottle cap screwing mechanism includes a cap gripper 14, a bottle gripper 15, a cap lifting cylinder 16, and a rotary motor 17. The frame 11 is provided with a positioning port 1101. The cap gripper 14 is located above the axis of the positioning port 1101 and is used to grip the cap 100. The gripping end of the bottle gripper 15 is located below the axis of the positioning port 1101 and is used to grip the bottle 200. The cap lifting cylinder 16 and the rotary motor 17 drive the cap gripper 14 to grip the cap 100 and screw it onto the bottle 200. Specifically, the top of the cap gripper 14 has an opening and closing cylinder (not shown in the figure) that drives its opening and closing. The cap gripper 14 is driven to move downward by the cap lifting cylinder 16 and grips the cap 100 under the drive of the opening and closing cylinder. After the cap gripper 14 reinforces the cap 100, the cap feeding motor 12 drives the turntable 13 to rotate in the opposite direction to reset, so as to remove the next cap 100. The cap 100 and the bottle 200 are coaxially aligned to facilitate the cap gripper 14 to grip the cap 100 and then screw it into the bottle 200 under the drive of the cap lifting cylinder 16 and the rotary motor 17.

[0050] The bottles 200 are fed one by one by the bottle feeding mechanism. Specifically, the bottle feeding mechanism includes a feeding platform 18, a feeding tray 19, and a push rod (not shown in the figure). A set of feeding trays 19 are spaced apart on the feeding platform 18. Each feeding tray 19 has a set of limiting holes for inserting bottles 200. The feeding platform 18 is located below the positioning port 1101, and the bottom of the feeding platform 18 is aligned with the clamping end of the bottle gripper 15 via an X-axis moving mechanism and a Y-axis moving mechanism. The push rod is located below the feeding tray 19 and is aligned with the axis of the positioning port 1101. The push rod is driven by a push cylinder to push the bottles 200 out of the feeding tray 19 so that the bottles 200 can be arranged as compactly as possible. The push mechanism composed of the push rod and the push cylinder is prior art and will not be described in detail here. The X-axis moving mechanism is preferably a conveyor line, which can be a sprocket or belt conveyor. In other feasible embodiments, the X-axis moving mechanism can be a slide rail assembly that moves in the X direction or other driving mechanism that can drive the feeding platform 18 to move in the X direction; there is no limitation here. In a preferred embodiment, the Y-axis moving mechanism is composed of a slide rail, a slider, and a sliding cylinder. In other feasible embodiments, the Y-axis moving mechanism can also be other feasible structures; there is no limitation here.

[0051] like Figure 4As shown, the frame 11 has a housing to protect the internal structure. This invention includes a cap-oriented feeding mechanism to automate the continuous feeding of the cap 100, and works in conjunction with a cap feeding mechanism, a bottle feeding mechanism, and a cap screwing mechanism to automatically feed and screw together the cap 100 and the bottle 200. The frame 11 can also be equipped with control instruments to control the cap-oriented feeding mechanism, the cap feeding mechanism, the bottle feeding mechanism, and the cap screwing mechanism, allowing operators to monitor the feeding and screwing status of the cap 100 and the bottle 200.

[0052] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0053] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cover-oriented feeding mechanism, characterized in that: include The hopper (1) is inclinedly set on the frame (11) for loading the cover (100), and the hopper (1) has a discharge port (101) on the upturned bottom side. The material receiving tray (2) is rotatably disposed at the bottom of the hopper (1). A set of material receiving grooves (201) matching the cover (100) are evenly distributed along the edge of the material receiving tray (2). The depth of the material receiving grooves (201) is less than the height of the cover (100). The orientation mechanism includes a set of ejector pins (3) and a magnetic drive mechanism. Each of the feeding slots (201) has a ejector pin (3) slidably inserted through its bottom axis. The top of the ejector pin (3) is flush with the top of the feeding slot (201) to limit the placement direction of the cover (100) placed inside the feeding slot (201). The magnetic drive mechanism is located at the bottom of the ejector pin (3) and drives the ejector pin (3) to extend and retract relative to the feeding slot (201) by changing its polarity. The cutting mechanism includes a pusher tooth (8) located above the feeding groove (201) and having a chamfered surface (801) inclined toward the discharge port (101). The chamfered surface (801) and the inner wall of the hopper (1) form a jaw with a gradually decreasing diameter to cut the cover (100) into the discharge port (101).

2. The cover directional feeding mechanism according to claim 1, characterized in that: The magnetic drive mechanism includes a set of follower magnets (4) and cam magnets (5). The follower magnets (4) are fixed to the bottom of the ejector pin (3). The cam magnets (5) are arranged in pairs around the bottom of the hopper (1) and are divided into a loading area and a discharge area according to the position of the discharge port (101). The top of the cam magnets (5) in the loading area has the same polarity as the follower magnets (4) to drive the ejector pin (3) to push out. The top of the cam magnets (5) in the discharge area has the opposite polarity to the follower magnets (4) to drive the ejector pin (3) to retract.

3. The cover directional feeding mechanism according to claim 2, characterized in that: The ejector pin (3) has a retaining ring (301), and the bottom of the feeding tray (2) is provided with an annular fixing plate (7). The fixing plate (7) is provided with a through hole (701) that is directly opposite to the feeding groove (201). A sleeve (702) is fixedly connected to the bottom of the through hole (701). The ejector pin (3) passes through the through hole (701) and enters the sleeve (702). The retaining ring (301) abuts against the fixing plate (7).

4. The cover directional feeding mechanism according to claim 3, characterized in that: A spring (6) is fitted on the ejector pin (3), and the two ends of the spring (6) abut against the fixing plate (7) and the follower magnet (4) respectively.

5. The cover directional feeding mechanism according to claim 1, characterized in that: A feeding tooth (9) is fixed above the feeding tooth (8). The inner wall of the feeding tooth (9) is a second oblique surface (901), and its outer wall is an arc surface that matches the hopper (1). The distance between the feeding tooth (9) and the feeding groove (201) is greater than the height of one cover (100) and less than the height of two covers (100).

6. The cover directional feeding mechanism according to claim 1, characterized in that: The discharge port (101) is connected to a material channel (10). The inner wall of the material channel (10) is a slope. The slope of the slope is consistent with that of the oblique cut surface (801) to form a channel that is compatible with the cover (100). The material channel (10) extends downward at an angle.

7. The method of using the cover directional feeding mechanism as described in any one of claims 1-6, characterized in that: include S1, place a set of covers (100) into the hopper (1); S2. Drive the material taking plate (2) to rotate. The cover (100) is driven by the centrifugal force of the material taking plate (2) to move into the material taking groove (201). The ejector pin (3) in the material carrying area is pushed out, so that the cover (100) in the material taking groove (201) all have their openings facing down and are covered on the ejector pin (3). S3. The feeding teeth (9) remove the stacked covers (100) in the feeding slots (201) so that each feeding slot (201) has only one cover (100). S4, the ejector pin (3) in the discharge area retracts, and the cover (100) in the feeding groove (201) slides into the material channel (10) along the oblique surface (801) of the pusher tooth (8).

8. A fully automatic bottle cap screwing mechanism, characterized in that: It includes the cap orientation feeding mechanism, cap feeding mechanism, bottle feeding mechanism and cap screwing mechanism as described in any one of claims 1-6.

9. The fully automatic bottle cap screwing mechanism according to claim 8, characterized in that: The cap feeding mechanism includes a cap feeding motor (12) and a fan-shaped turntable (13). The turntable (13) has a groove (1301) with a width adapted to the cap body (100) along its edge. The groove (1301) has a stop arm (1302) along its center line. The front end of the groove (1301) has a material inlet (1303) adapted to the cap body (100). The material inlet (1303) is connected to the material channel (10). The turntable (13) is driven by the cap feeding motor (12) to rotate relative to the material channel (10) to transfer the cap body (100) to the bottle cap screwing mechanism.

10. The fully automatic bottle cap screwing mechanism according to claim 9, characterized in that: The cap screwing mechanism includes a cap gripper (14), a bottle gripper (15), a cap lifting cylinder (16), and a rotary motor (17). The frame (11) is provided with a positioning port (1101). The cap gripper (14) is located above the axis of the positioning port (1101) and is used to grip the cap (100). The gripping end of the bottle gripper (15) is located below the axis of the positioning port (1101) and is used to grip the bottle (200). The cap lifting cylinder (16) and the rotary motor (17) drive the cap gripper (14) to grip the cap (100) and screw it onto the bottle (200).

11. The fully automatic bottle cap screwing mechanism according to claim 10, characterized in that: The bottle feeding mechanism includes a feeding platform (18), a feeding tray (19), and a push rod. A set of feeding trays (19) are spaced apart on the feeding platform (18). The feeding tray (19) has a set of limiting holes for inserting bottles (200). The feeding platform (18) is located below the positioning port (1101). The bottom of the feeding platform (18) is moved by an X-axis moving mechanism and a Y-axis moving mechanism to make the bottle (200) on the feeding tray (19) face the clamping end of the bottle gripper (15). The push rod is located below the feeding tray (19) and faces the axis of the positioning port (1101). The push rod is driven by a push cylinder to push the bottle (200) out of the feeding tray (19).

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