Quick positioning structure for supplementary coating of rivet of easy-open cover

Abstract

The utility model discloses a quick positioning structure for supplementary coating of rivets of an easy-open cover, and relates to the technical field of positioning devices. The zip-top can conveying device comprises a frame, a belt wheel conveying mechanism used for conveying zip-top cans is installed on the frame, a sliding part is vertically arranged on the top of the frame in a sliding mode, and a pipe body is arranged on the sliding part. According to the glue supplementing device for the easy-to-open lid, the annular abutting plate is matched with the through hole, when the column body makes contact with the easy-to-open lid, the driving piece is driven by the pressure sensing mechanism to act, and whether the rivet is aligned to the through hole or not is judged according to the change of the measured pressure value; the glue supplementing device has the advantages that compared with the prior art, when glue supplementing liquid is applied to the rivet deviating from the center of the easy-to-open lid, the glue supplementing time is shortened; and the rivet can be quickly aligned with the through hole, and the rivet is coated with a glue solution, so that the production efficiency is favorably improved.

Description

Technical Field

[0001] The present application relates to the technical field of positioning devices, and in particular to a quick positioning structure for repainting rivets on easy-open lids. Background Art

[0002] Easy-open lids, also known as easy-open caps, are made of a lid body and a pull ring riveted together. They are mostly made of aluminum or tinplate and are used to seal cans. They are metal packaging products. During the production of easy-open lids, the rivets that connect the lid body and the pull ring need to be punched. During the punching process, the coating on the top of the rivet is easily damaged, which makes it easy to rust and corrode. In more serious cases, the rivet may be perforated. Therefore, a patching device is needed to apply glue to the top of the rivet to ensure the safety of canned food.

[0003] In the existing technical solution, when the can moves to the bottom of the coating device, the coating device moves downward, and then the coating device squeezes the glue to the top of the rivet to complete the coating of the rivet. However, since some rivets of the easy-open lid deviate from the center of the easy-open lid, it is difficult to quickly align the rivets when coating them with glue, which is not conducive to improving production efficiency. In order to reasonably improve this problem, the present application proposes a quick positioning structure for easy-open lid rivet coating. Utility Model Content

[0004] The purpose of the present application is to solve the technical problem that in the existing technical solution, when the can moves to the bottom of the coating device, the coating device moves downward, and then the coating device squeezes the glue to the top of the rivet to complete the coating of the rivet. However, since some rivets of the easy-open cover deviate from the center of the easy-open cover, it is difficult to quickly align the rivets when coating the glue, which is not conducive to improving production efficiency. The present application provides a quick positioning structure for easy-open cover rivet coating.

[0005] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0006] A quick positioning structure for repainting rivets of an easy-open cover, comprising:

[0007] The frame is provided with a pulley conveying mechanism for conveying cans, a sliding portion is provided on the top of the frame for vertical sliding, a tube body is provided on the sliding portion, the bottom end of the tube body is blocked by a column, the top end of the tube body is connected to a liquid infusion tube, an annular abutment plate is distributed on the outside of the column, and a pressure sensing mechanism is provided, a through hole is provided on the annular abutment plate, the tube body and the through hole are connected through a hose, an electromagnetic valve is provided on the end of the hose, and the hose is linked to the pressure sensing mechanism;

[0008] A driving member, linked to the pressure sensing mechanism, can drive the annular abutment plate to rotate through the driving member;

[0009] The limiting mechanism can limit the movement of the can at the bottom of the column.

[0010] Furthermore, a first gear is installed on the frame and is transmission-connected to the pulley conveying mechanism. A half gear is rotatably installed on the frame and is equipped with a first motor for driving the half gear to rotate. The half gear is meshed with the first gear, and the half gear is linked with the sliding part through a linkage.

[0011] Furthermore, the linkage part includes an eccentric stop block constructed on the outside of the half gear, the sliding part includes a mounting plate, a plurality of guide columns are vertically connected to the top of the frame, the mounting plate and the plurality of guide columns are slidably matched, the guide columns are each sleeved with a first compression spring, and the first compression spring is in conflict with the bottom side of the mounting plate, a U-shaped frame is connected to the mounting plate, and the eccentric stop block is in conflict with the inner wall of the U-shaped frame.

[0012] Furthermore, the pressure sensing mechanism includes an annular pressure sensor installed at the bottom end of the tube body, the annular support plate is movably sleeved on the outside of the column, and the annular pressure sensor and the annular support plate are connected by a second compression spring.

[0013] Furthermore, the driving member includes a second motor mounted on the mounting plate, the tube body is rotatably mounted on the top of the mounting plate and is rotationally connected to the infusion tube, an annular ring gear is constructed on the outside of the tube body, a second gear is installed on the output end of the second motor and is meshed with the annular ring gear, a slide groove is constructed on the circumferential side of the column, and a slider is constructed on the inner side of the annular support plate, and the slider slides in cooperation with the slide groove.

[0014] Furthermore, the bottom end of the column is configured with an arc-shaped contact surface.

[0015] Furthermore, the limiting mechanism includes two fixed frames arranged on both sides of the pulley conveying mechanism, each of the fixed frames is provided with an annular chain plate and is equipped with a sprocket assembly, the two sprocket assemblies are transmission-connected to the pulley conveying mechanism, and multiple fixed blocks are connected to the outer sides of the two annular chain plates, and arc grooves are cooperated on the adjacent fixed blocks.

[0016] Furthermore, flexible pads are laid in the arc-shaped grooves.

[0017] The beneficial effects of this application are as follows:

[0018] The present application adopts a matching design of an annular abutment plate and a through-hole. When the column contacts the can, the driving part is driven by the pressure sensing mechanism, and the change in the measured pressure value is used to determine whether the rivet is aligned with the through-hole. Compared with the existing technology, when applying glue to the rivet that is offset from the center of the easy-open cover, the rivet can be quickly aligned with the through-hole and glue can be applied to the rivet, which is beneficial to improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural diagram of this application;

[0020] Figure 2 This application Figure 1 A side view of the structure;

[0021] Figure 3 This application Figure 1 A partial structural cross-sectional view;

[0022] Figure 4 It is a structural diagram of the limiting mechanism of this application;

[0023] Figure 5 It is a structural cross-sectional view of the pipe body of the present application;

[0024] Figure 6 This application Figure 5 A magnified view of point A;

[0025] Figure 7 This application Figure 5 Enlarged view of point B;

[0026] Reference numerals: 1, frame; 2, pulley conveying mechanism; 201, conveying roller; 202, belt; 3, sliding portion; 301, mounting plate; 302, guide column; 303, first compression spring; 4, tube body; 5, column; 501, arc-shaped contact surface; 6, fluid infusion tube; 7, annular contact plate; 8, pressure sensing mechanism; 801, annular pressure sensor; 802, second compression spring; 9, through hole; 10, hose; 11, solenoid valve; 12, driving member; 1201, second motor; 1202, annular gear ring; 1203, second gear; 120 4. Slide groove; 1205. Slider; 13. Limiting mechanism; 1301. Fixed frame; 1302. Annular chain plate; 1303. Sprocket assembly; 13031. First sprocket; 13032. First chain; 1304. Fixed block; 1305. Arc groove; 14. First gear; 15. Half gear; 16. First motor; 17. Linkage member; 1701. Eccentric block; 1702. U-shaped frame; 18. Flexible pad; 19. Rotating rod; 20. Second sprocket; 21. Second chain; 22. First bevel gear; 23. Second bevel gear. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0028] like Figure 1-Figure 7 As shown, an embodiment of the present application provides a quick positioning structure for repainting rivets on an easy-open cover, comprising:

[0029] The frame 1 is equipped with a pulley conveying mechanism 2 for conveying cans. The pulley conveying mechanism 2 is a prior art, including conveying rollers 201 rotatably mounted at both ends of the frame 1 and a belt 202 wound around the two conveying rollers 201. The belt 202 can convey cans by annular motion. A sliding portion 3 is vertically slidably mounted on the top of the frame 1. A tube 4 is provided on the sliding portion 3. The tube 4 is located on the top of the belt 202. The bottom end of the tube 4 is blocked by a column 5, which is welded to the tube 4. A liquid replenishing tube 6 is connected to the top of the tube 4. The liquid replenishing tube 6 can be used to replenish glue into the tube 4. Liquid, an annular plate 7 is distributed on the outside of the column 5. The annular plate 7 is made of nylon, which is smooth and wear-resistant. The annular plate 7 is close to the bottom of the column 5 and is equipped with a pressure sensing mechanism 8. Because the rivet is located at the top of the pull ring and is higher than the pull ring, the annular plate 7 will conflict with the top of the rivet. A through hole 9 is opened on the annular plate 7. The tube body 4 is connected to the through hole 9 through a hose 10. The glue can be injected into the through hole 9 through the hose 10. A solenoid valve 11 is installed at the end of the hose 10 and is linked to the pressure sensing mechanism 8. The pressure sensing mechanism 8 can control the opening and closing of the solenoid valve 11;

[0030] The driving member 12 is linked with the pressure sensing mechanism 8 and can drive the annular plate 7 to rotate through the driving member 12;

[0031] The limiting mechanism 13 can limit the movement of the cans at the bottom of the column 5 so that when the annular plate 7 rotates, the cans are not likely to rotate along with it;

[0032] When the can moves to just below the column 5, the pulley conveying mechanism 2 stops operating, and then the sliding part 3 drives the tube body 4 to press down, and the column 5 contacts the center of the top of the can. At this time, the annular plate 7 contacts the top of the rivet, and the pressure value measured by the pressure sensing mechanism 8 increases, and a start signal is issued to drive the driving member 12 to operate, thereby driving the annular plate 7 to rotate. When the rivet enters the through hole 9, the pressure value measured by the pressure sensing mechanism 8 decreases, and a stop signal and an action signal are issued. The driving member 12 stops working under the stop signal, and the solenoid valve 11 opens briefly under the action signal, and glue is injected into the through hole 9, so that the rivet that has deviated from the center of the easy-open cover can be quickly patched.

[0033] The present application adopts a matching design of an annular abutment plate 7 and a through hole 9. When the column 5 contacts the can, the driving member 12 is driven to move by the pressure sensing mechanism 8, and the change in the measured pressure value is used to determine whether the rivet is aligned with the through hole 9. Compared with the existing technology, when applying glue to the rivet that is offset from the center of the easy-open cover, the rivet can be quickly aligned with the through hole 9 and glue can be applied to the rivet, which is beneficial to improving production efficiency.

[0034] like Figure 1-Figure 3As shown, in some embodiments, a first gear 14 is installed on the frame 1 and is transmission-connected to the pulley conveying mechanism 2. The first gear 14 is coaxially connected to one of the conveying rollers 201. A half gear 15 is rotatably installed on the frame 1 and is equipped with a first motor 16 for driving the half gear 15 to rotate. The half gear 15 is engaged with the first gear 14. Through the mutual cooperation between the half gear 15 and the first gear 14, the pulley conveying mechanism 2 is gap-transmitted. The half gear 15 is linked with the sliding part 3 through a linkage 17 to link the sliding part 3 with the half gear 15. When the half gear 15 is separated from the first gear 14, the sliding part 3 can slide down under the action of the linkage 17, and when the half gear 15 is re-engaged with the first gear 14, the sliding part 3 can slide up under the action of the linkage 17. This design enables the sliding part 3 to be linked with the pulley conveying mechanism 2, which is convenient for applying glue to the rivet.

[0035] like Figure 1-Figure 3 As shown, in some embodiments, the linkage member 17 includes an eccentric block 1701 constructed on the outside of the half gear 15, the outside of the eccentric block 1701 is arc-shaped, and its arc center is located on the axis of the half gear 15, the sliding part 3 includes a mounting plate 301, a plurality of guide posts 302 are vertically connected to the top of the frame 1, the mounting plate 301 and the plurality of guide posts 302 are slidably matched, and the guide posts 302 are each sleeved with a first compression spring 303, and the first compression spring 303 is in conflict with the bottom side of the mounting plate 301. Under the action of the first compression spring 303, the mounting plate 301 can slide upward along the axis of the guide post 302, and the mounting plate 301 is connected to a U-shaped frame 1702. The eccentric stop block 1701 contacts and overlaps with the inner wall of the U-shaped frame 1702. During the rotation of the half gear 15, when the half gear 15 is separated from the first gear 14, the outer side of the eccentric stop block 1701 contacts the inner wall of the U-shaped frame 1702 below it. Under the contact of the eccentric stop block 1701, the U-shaped frame 1702 can drive the mounting plate 301 to slide downward. After the outer side of the eccentric stop block 1701 is separated from the inner wall of the U-shaped frame 1702, the mounting plate 301 can slide upward along the axis of the guide column 302 under the action of the first compression spring 303, and drive the U-shaped frame 1702 to slide upward, and then the half gear 15 re-engages with the first gear 14.

[0036] like Figure 3 、 Figure 5 and Figure 7As shown, in some embodiments, the pressure sensing mechanism 8 includes an annular pressure sensor 801 installed at the bottom end of the tube body 4, the annular pressure sensor 801 is connected to the PLC, and the driving part 12 and the solenoid valve 11 are controlled by the PLC program, the annular pressure plate 7 is movably sleeved on the outside of the column 5, and the annular pressure sensor 801 and the annular pressure plate 7 are connected through a second compression spring 802, and the second compression spring 802 is sleeved on the outside of the column 5, which is used to provide a thrust forcing the annular pressure sensor 801 and the annular pressure plate 7 to move away from each other, that is, the pressure value detected by the annular pressure sensor 801 in the normal state is fixed. This design allows the annular pressure plate 7 to move under the contact of the rivet, thereby reducing the pressure on the rivet and reducing the wear caused by the annular pressure plate 7 and the rivet when the rotation occurs, and when the second compression spring 802 is compressed and stretched, the detection value of the annular pressure sensor 801 changes.

[0037] like Figure 3 、 Figure 5 and Figure 6 As shown, in some embodiments, the driving member 12 includes a second motor 1201 mounted on the mounting plate 301, the tube body 4 is rotatably mounted on the top of the mounting plate 301, and is rotatably connected to the infusion tube 6, and the infusion tube 6 is fixed on the top of the mounting plate 301. The structure here is similar to a rotary nozzle, and the rotation of the tube body 4 is not likely to affect the infusion tube 6. An annular gear ring 1202 is constructed on the outside of the tube body 4, and the annular gear ring 1202 is close to the end of the tube body 4. The output end of the second motor 1201 is equipped with a second motor 1201. The second gear 1203 is meshed with the annular gear ring 1202, and the tube body 4 can be driven to rotate by the second motor 1201. A slide groove 1204 is constructed on the peripheral side of the column 5. There are three slide grooves 1204 distributed in an annular shape. The inner side of the annular support plate 7 is constructed with sliders 1205, and the number of the sliders 1205 is the same as that of the slide grooves 1204. The sliders 1205 slide in cooperation with the slide grooves 1204. The second compression spring 802 is mounted on the top of the slider 1205. The annular support plate 7 can be driven to rotate by rotating the tube body 4.

[0038] like Figure 5 and Figure 6 As shown, in some embodiments, the bottom end of the column 5 is constructed with an arc-shaped contact surface 501, and the arc-shaped contact surface 501 is designed to reduce the contact area between the column 5 and the top of the can, thereby reducing the wear between the two when the column 5 rotates.

[0039] like Figures 1-4As shown, in some embodiments, the limiting mechanism 13 includes two fixed frames 1301 arranged on both sides of the pulley conveying mechanism 2, and the fixed frames 1301 are each provided with an annular chain plate 1302 and equipped with a sprocket assembly 1303. The sprocket assembly 1303 includes two first sprockets 13031 rotatably mounted on the fixed frame 1301, and a first chain 13032 is wound around the outer sides of the two first sprockets 13031. The annular chain plate 1302 is connected to the first chain 13032. The structure here is similar to an annular chain conveyor, and the annular chain plate 1302 can be driven to rotate by the sprocket assembly 1303. It should be specifically explained that the conveying direction of the belt 202 is consistent with that of the two annular chain plates 1302, and the axis of the above-mentioned first sprocket 13031 is perpendicular to the axis of the conveying roller 201. The two sprocket assemblies 1303 are transmission-connected to the pulley conveying mechanism 2. A rotating rod 19 is rotatably installed on the frame 1, and the rotating rod 19 is parallel to the conveying roller 201. The rotating rod 19 and one of the conveying rollers 201 are both equipped with a second sprocket 20 at the end, and the two second sprockets 20 are connected by a second chain 21. A first bevel gear 22 is installed on one of the first sprockets 13031 on the two sprocket assemblies 1303, and a second bevel gear 23 is installed at both ends of the rotating rod 19. The two second bevel gears 23 are respectively meshed with the two first bevel gears 22 to make the belt 202 rotate synchronously with the two circular chain plates 1302. A plurality of fixed blocks 1304 are connected to the outer sides of the two circular chain plates 1302, and arc grooves 1305 are formed on adjacent fixed blocks 1304. Three fixed blocks 1304 form a group. As the circular chain plates 1302 rotate, when the three fixed blocks 1304 are parallel to each other, the arc grooves 1305 are formed and contact the peripheral side of the cans. At this time, the fixed blocks 1304 on the two circular chain plates 1302 can be used to resist and fix the cans, making it difficult to move.

[0040] like Figure 4 As shown, in some embodiments, a flexible pad 18 is laid in the arc groove 1305 , and the flexible pad 18 is a rubber pad. Such a design is not easy to damage the can when the can is fixed by the arc groove 1305 .

[0041] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick positioning structure for repainting rivets on easy-open lids, characterized in that: include: A frame (1) is provided with a pulley conveying mechanism (2) for conveying cans, a sliding portion (3) is vertically slidably provided on the top of the frame (1), a tube body (4) is provided on the sliding portion (3), the bottom end of the tube body (4) is blocked with a column (5), the top end of the tube body (4) is connected with a liquid infusion tube (6), an annular abutment plate (7) is distributed on the outside of the column (5), and a pressure sensing mechanism (8) is provided, a through hole (9) is provided on the annular abutment plate (7), the tube body (4) and the through hole (9) are connected through a hose (10), an electromagnetic valve (11) is provided at the end of the hose (10), and the hose (10) is linked to the pressure sensing mechanism (8); A driving member (12) is linked to the pressure sensing mechanism (8) and can drive the annular support plate (7) to rotate through the driving member (12); A limiting mechanism (13) can limit the movement of the can at the bottom of the column (5).

2. The quick positioning structure for repainting rivets of easy-open lids according to claim 1, characterized in that: The frame (1) is provided with a first gear (14) which is in transmission connection with the pulley conveying mechanism (2). The frame (1) is provided with a half gear (15) which is rotatably mounted thereon and is equipped with a first motor (16) for driving the half gear (15) to rotate. The half gear (15) is meshed with the first gear (14). The half gear (15) is linked to the sliding portion (3) via a linkage member (17).

3. The quick positioning structure for repainting rivets of easy-open lids according to claim 2, characterized in that: The linkage member (17) includes an eccentric stopper (1701) constructed on the outside of the half gear (15); the sliding portion (3) includes a mounting plate (301); a plurality of guide posts (302) are vertically connected to the top of the frame (1); the mounting plate (301) and the plurality of guide posts (302) are slidably matched; the guide posts (302) are each sleeved with a first compression spring (303), and the first compression spring (303) contacts the bottom side of the mounting plate (301); a U-shaped frame (1702) is connected to the mounting plate (301); and the eccentric stopper (1701) contacts and overlaps the inner wall of the U-shaped frame (1702).

4. The quick positioning structure for repainting rivets of easy-open lids according to claim 3, characterized in that: The pressure sensing mechanism (8) includes an annular pressure sensor (801) installed at the bottom end of the tube body (4); the annular abutment plate (7) is movably sleeved on the outside of the column (5); and the annular pressure sensor (801) and the annular abutment plate (7) are connected via a second compression spring (802).

5. The quick positioning structure for repainting rivets of easy-open lids according to claim 4, characterized in that: The driving member (12) includes a second motor (1201) mounted on the mounting plate (301); the tube body (4) is rotatably mounted on the top of the mounting plate (301) and is rotatably connected to the infusion tube (6); an annular gear ring (1202) is constructed on the outer side of the tube body (4); a second gear (1203) is installed on the output end of the second motor (1201) and is meshed with the annular gear ring (1202); a sliding groove (1204) is constructed on the circumferential side of the column (5); a slider (1205) is constructed on the inner side of the annular support plate (7); and the slider (1205) is slidably engaged with the sliding groove (1204).

6. The quick positioning structure for repainting rivets of easy-open lids according to claim 5, characterized in that: The bottom end of the column (5) is configured with an arc-shaped contact surface (501).

7. The quick positioning structure for repainting rivets of easy-open lids according to claim 1, characterized in that: The limiting mechanism (13) comprises two fixing frames (1301) arranged on both sides of the pulley conveying mechanism (2); the fixing frames (1301) are each provided with an annular chain plate (1302) and equipped with a sprocket assembly (1303); the two sprocket assemblies (1303) are transmission-connected to the pulley conveying mechanism (2); the outer sides of the two annular chain plates (1302) are each connected to a plurality of fixing blocks (1304); and arc-shaped grooves (1305) are cooperatively formed on adjacent fixing blocks (1304).

8. The quick positioning structure for repainting rivets of easy-open lids according to claim 7, characterized in that: Flexible pads (18) are laid in the arc-shaped grooves (1305).

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