A capping mechanism

Abstract

This invention provides a capping mechanism, belonging to the field of mechanical technology. It solves two major technical bottlenecks in traditional capping equipment: firstly, the clamping mechanism and capping assembly are designed independently, resulting in bulky equipment and low efficiency; secondly, a single clamping structure is difficult to adapt to diverse bottle shapes (such as cylindrical, prismatic, and irregularly shaped bottles) and cap materials (metal, plastic, and composite materials), leading to frequent tooling changes that severely impact production cycle time. This capping mechanism includes a main shaft frame and a material assembly, cam assembly, lifting assembly, torque assembly, and capping head assembly mounted on the main shaft frame. A drive device is connected to the bottom of the main shaft frame, and the capping head assembly has a cylindrical capping head seat, which is hollow inside. This invention has the advantages of automatic clamping force adjustment, adaptability to different bottle caps, and improved versatility and reliability.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology, and specifically relates to a capping mechanism. Background Technology

[0002] Capping machines are widely used in daily life. In the food, pharmaceutical, and chemical industries, there are capping machines that match both plastic and metal materials. Capping machines are a type of sealing equipment used in packaging, and are used for various glass bottles, plastic bottles, and iron packaging products.

[0003] Traditional capping equipment has two major technical bottlenecks: First, the clamping mechanism and the capping assembly are designed independently, resulting in large equipment size and low coordination efficiency; Second, the single clamping structure is difficult to adapt to diverse bottle shapes (such as cylindrical, prismatic, and irregularly shaped bottles) and cap materials (metal, plastic, and composite materials), and frequent changes of tooling fixtures seriously affect the production cycle. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a capping mechanism that facilitates clamping and screwing on caps.

[0005] The objective of this utility model can be achieved through the following technical solution: A capping mechanism, characterized in that it includes a main shaft frame and a material assembly, a cam assembly, a lifting assembly, a torque assembly, and a capping head assembly mounted on the main shaft frame. A driving device is connected to the bottom of the main shaft frame. A cylindrical capping head seat is provided on the capping head assembly, and the capping head seat is hollow inside. Three mounting grooves are evenly opened circumferentially on the surface of the capping head seat. An arc-shaped clamping head for gripping bottle caps is provided in each mounting groove. The clamping head is fixedly installed in the capping head seat through a drive shaft. A clamping mouth is formed between each clamping head. A polyurethane block is installed in the clamping mouth. The top of the clamping head has a hollow and symmetrical clamping seat. A ball bearing is installed in the clamping seat, and the ball bearing is set in the clamping seat through a fixed shaft. A cavity is formed between the ball bearings. An opening groove is provided at the end of each fixed seat. A return spring ring is installed in the opening groove.

[0006] In the aforementioned capping mechanism, the torque assembly includes an upper connecting sleeve, a lower connecting sleeve, and a locking nut. The torque assembly has a hollow structure, and a fixing sleeve is provided inside the torque assembly. The bottom of the fixing sleeve is inserted into the capping head seat and fixed by bolts. A push rod is provided inside the fixing sleeve. The push rod extends into the cavity of the capping head seat and contacts the ball bearing. A grooved fixing member is provided at the end of the push rod.

[0007] In the aforementioned capping mechanism, a first fixed plate, a second fixed plate, and a third fixed plate are respectively sleeved on the main shaft. The outer surfaces of the first fixed plate, the second fixed plate, and the third fixed plate are all uniformly provided with a plurality of placement grooves along the circumference, and the placement grooves of the first fixed plate, the second fixed plate, and the third fixed plate correspond to each other. The surfaces of the first fixed plate, the second fixed plate, and the third fixed plate are uniformly provided with a plurality of through holes along the circumference.

[0008] In the aforementioned capping mechanism, the lifting assembly includes a fixed plate, a lifting rod, several lifting platforms, and a second top rod installed inside the lifting rod. The lifting rod and the second top rod pass through the lifting platform. The fixed plate is installed in a placement groove and fixed with bolts. The lifting rod extends downward through a through hole and is connected to a torque assembly with bolts. The second top rod extends upward into a through hole in a third fixed plate and downward into the torque assembly, corresponding to a groove in a fixing component. Both ends of the lifting platform are provided with brackets, and rollers are installed on the brackets. The ends of the brackets are provided with protective covers to prevent the rollers from falling off. The fixed plate has two symmetrical slide rail grooves, and one end of the bracket has a roller installed in the slide rail groove.

[0009] In the aforementioned capping mechanism, the cam assembly includes a lifting cam and a cap-removing cam. The lifting cam is disposed between a first fixed plate and a second fixed plate. Both the lifting cam and the cap-removing cam have circular lifting grooves along their surfaces, with one end of the lifting groove at the bottom and the other end at the top. The lifting groove is used to place the roller on the other side of the lifting platform. The lifting cam controls the up-and-down movement of the lifting rod, and the cap-removing cam controls the movement of the top rod.

[0010] In one of the capping mechanisms described above, the material assembly is provided with a double-layer material tray for placing bottle caps, and the material tray is provided with material grooves that correspond to the capping head assembly evenly distributed along the outer surface circumferentially.

[0011] Working principle: The drive unit drives the main shaft to rotate, and the cam assembly rotates with the main shaft. The lifting platform moves up and down through the lifting groove, which in turn drives the lifting rod and the top rod to move, realizing the lifting, cap removal and capping actions of the capping head; the torque assembly transmits torque through the top rod and contacts the ball bearing, and adjusts the clamping force with the adaptive clamping system to ensure that the bottle cap is stably tightened.

[0012] Compared with existing technologies, this capping mechanism: 1. By combining polyurethane blocks, ball bearings and return spring rings, the clamping force can be automatically adjusted to adapt to different bottle caps, improving versatility and reliability; 2. By utilizing the mechanical cooperation between the cam lifting groove and the roller, the lifting and unloading actions of the capping head are precisely controlled, resulting in a simple structure and stable movement. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the capping mechanism.

[0014] Figure 2 This is a sectional view of the capping mechanism.

[0015] Figure 3 This is a front view of the capping mechanism.

[0016] In the diagram, 1. Main shaft frame; 2. Material assembly; 3. Cam assembly; 4. Lifting assembly; 5. Torque assembly; 6. Capping head assembly; 7. Capping head seat; 8. Mounting slot; 9. Clamping head; 10. Clamping nozzle; 11. Polyurethane block; 12. Clamping seat; 13. Ball bearing; 14. Opening slot; 15. Upper connecting sleeve; 16. Lower connecting sleeve; 17. Locking nut; 18. Fixing sleeve; 19. Top rod one; 20. Fixing component; 21. First fixing plate; 22. Second fixing plate; 23. Third fixing plate; 24. Placement slot; 25. Fixing plate; 26. Lifting rod; 27. Lifting platform; 28. Top rod two; 29. ​​Bracket; 30. Roller; 31. Protective cover; 32. Slide rail groove; 33. Lifting cam; 34. Cap removal cam; 35. Lifting groove; 36. Double-layer material tray; 37. Material trough; 38. Return spring ring. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] like Figure 1 As shown, this capping mechanism includes a main shaft frame 1 and a material assembly 2, a cam assembly 3, a lifting assembly 4, a torque assembly 5, and a capping head assembly 6 mounted on the main shaft frame 1. A drive device is connected to the bottom of the main shaft frame 1. A cylindrical capping head seat 7 is provided on the capping head assembly 6, and the capping head seat 7 is hollow inside. Three mounting grooves 8 are evenly distributed circumferentially on the surface of the capping head seat 7. Each mounting groove 8 contains an arc-shaped clamping head 9 for gripping bottle caps. The clamping heads 9 are fixedly mounted inside the capping head seat 7 via a drive shaft. A clamping nozzle 10 is formed between each clamping head 9. A polyurethane block 11 is installed inside the mouth 10. The top of the clamping head 9 has a hollow and symmetrical clamping seat 12. A ball bearing 13 is installed inside the clamping seat 12, and the ball bearing 13 is set in the clamping seat 12 through a fixed shaft. A cavity is formed between the ball bearings 13. Each fixed seat has an opening groove 14 at its end. A return spring ring (38) is installed in the opening groove 14. The hollow capping head seat 7 has three arc-shaped clamping heads 9 inside. The clamping mouth 10 is embedded with the polyurethane block 11 (anti-slip and wear-resistant). Together with the ball bearing 13 and the return spring ring (38), they form an adaptive clamping system.

[0019] To elaborate further, the torque assembly 5 includes an upper connecting sleeve 15, a lower connecting sleeve 16, and a locking nut 17. The torque assembly 5 has a hollow structure, and a fixing sleeve 18 is provided inside the torque assembly 5. The bottom of the fixing sleeve 18 is inserted into the capping head seat 7 and fixed by bolts. A push rod 19 is provided inside the fixing sleeve 18. The push rod 19 extends into the cavity of the capping head seat 7 and contacts the ball bearing 13. A grooved fixing member 20 is provided at the end of the push rod 19. The push rod 19 contacts the ball bearing 13 and transmits the main shaft torque to the clamping head 9. At the same time, the fixing member 20 cooperates with the push rod 28 to achieve precise control of the cap removal / capping action.

[0020] To elaborate further, a first fixed plate 21, a second fixed plate 22, and a third fixed plate 23 are respectively fitted onto the main shaft. The outer surfaces of the first fixed plate 21, the second fixed plate 22, and the third fixed plate 23 are all uniformly provided with a number of placement grooves 24 along the circumference. The placement grooves 24 are used to install the fixing plate 25, and the placement grooves 24 of the first fixed plate 21, the second fixed plate 22, and the third fixed plate 23 correspond to each other. The surfaces of the first fixed plate 21, the second fixed plate 22, and the third fixed plate 23 are uniformly provided with a number of through holes along the circumference. The through holes are provided to install the lifting rod 26.

[0021] In further detail, the lifting assembly 4 includes a fixed plate 25, a lifting rod 26, several lifting platforms 27, and a second top rod 28 installed inside the lifting rod 26. The lifting rod 26 and the second top rod 28 pass through the lifting platform 27. The fixed plate 25 is installed in the placement groove 24 and fixed with bolts. The lifting rod 26 extends downward through the through hole and is connected to the torque assembly 5 with bolts. The second top rod 28 extends upward into the through hole of the third fixed plate 23 and downward into the torque assembly 5, corresponding to the groove of the fixing member 20. Both ends of the lifting platform 27 are provided with brackets 29, and rollers 30 are installed on the brackets 29. The ends of the brackets 29 are provided with protective covers 31 to prevent the rollers 30 from falling off. The fixed plate 25 has two symmetrical slide rail grooves 32. One end of the bracket 29 has a roller 30 installed in the slide rail groove 32. The roller 30 installed in the slide rail groove 32 facilitates the up and down movement of the mounting platform.

[0022] To elaborate further, the cam assembly 3 includes a lifting cam 33 and a cover-removing cam 34. The lifting cam 33 is located between the first fixed plate 21 and the second fixed plate 22. Both the lifting cam 33 and the cover-removing cam 34 have circular lifting grooves 35 along their surfaces, with one end of the lifting groove 35 at the bottom and the other end at the top. The lifting groove 35 is used to place the roller 30 on the other side of the lifting platform 27. The lifting cam 33 controls the up and down movement of the lifting rod 26, and the cover-removing cam 34 controls the movement of the top rod 28.

[0023] The lifting cam 33 controls the lifting rod 26 to move up and down and controls the capping head to move up and down by moving the roller 30 in the lifting groove 35; the cap taking cam 34 controls the top rod 28 to move up and down to control the size of the clamping head 9 to take or release the cap. The top rod 28 moves down and touches the top rod 19 of the fixing part 20 to make it move down. The top rod 19 pushes the ball bearing 13 to move outward to reduce the clamping mouth 10 to clamp the cap. After the clamping mouth 10 touches the cap, the top rod 28 resets and the clamping head 9 is reset by the reset spring ring (38).

[0024] To elaborate further, the material assembly 2 is provided with a double-layer material tray 36 for placing bottle caps. The material tray has material grooves 37 that are evenly distributed around its outer surface, corresponding to the capping head assembly 6. The material grooves 37 are evenly distributed around its outer surface, corresponding to the capping head assembly 6, for orderly supply of bottle caps, ensuring the continuity and accuracy of the cap taking action.

[0025] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0026] Although this document frequently uses terms such as spindle frame 1, material assembly 2, cam assembly 3, lifting assembly 4, torque assembly 5, capping head assembly 6, capping head seat 7, mounting groove 8, clamping head 9, clamping mouth 10, polyurethane block 11, clamping seat 12, ball bearing 13, opening groove 14, upper connecting sleeve 15, lower connecting sleeve 16, locking nut 17, fixing sleeve 18, top rod one 19, fixing component 20, first fixing plate 21, second fixing plate 22, third fixing plate 23, placement groove 24, fixing plate 25, lifting rod 26, lifting platform 27, top rod two 28, bracket 29, roller 30, protective cover 31, slide rail groove 32, lifting cam 33, cap removal cam 34, lifting groove 35, double-layer material tray 36, and material trough 37, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A capping mechanism, characterized in that, The assembly includes a main shaft frame (1) and a material assembly (2), a cam assembly (3), a lifting assembly (4), a torque assembly (5), and a capping head assembly (6) mounted on the main shaft frame (1). The bottom of the main shaft frame (1) is connected to a drive device. The capping head assembly (6) is provided with a cylindrical capping head seat (7), and the capping head seat (7) is hollow inside. The surface of the capping head seat (7) is evenly provided with three mounting grooves (8) on the circumference. Each mounting groove (8) is provided with an arc-shaped clamping head (9) for clamping bottle caps. The clamping head (9) is fixed by a drive shaft. Installed in the capping head seat (7), a clamping mouth (10) is formed between each of the clamping heads (9), a polyurethane block (11) is installed in the clamping mouth (10), the top of the clamping head (9) has a hollow and mutually symmetrical clamping seat (12), a ball bearing (13) is installed in the clamping seat (12), and the ball bearing (13) is set in the clamping seat (12) through a fixed shaft, a cavity is formed between the ball bearings (13), and each fixed seat has an opening groove (14) at its end, a return spring ring (38) is installed in the opening groove (14).

2. The capping mechanism according to claim 1, characterized in that, The torque assembly (5) includes an upper connecting sleeve (15), a lower connecting sleeve (16), and a locking nut (17). The torque assembly (5) has a hollow structure. A fixing sleeve (18) is provided inside the torque assembly (5). The bottom of the fixing sleeve (18) is inserted into the capping head seat (7) and fixed by bolts. A push rod (19) is provided inside the fixing sleeve (18). The push rod (19) extends into the cavity of the capping head seat (7) and contacts the ball bearing (13). A grooved fixing piece (20) is provided at the end of the push rod (19).

3. A capping mechanism according to claim 1, characterized in that, The main shaft is respectively fitted with a first fixed disk (21), a second fixed disk (22) and a third fixed disk (23). The outer surfaces of the first fixed disk (21), the second fixed disk (22) and the third fixed disk (23) are all uniformly provided with a number of placement grooves (24) along the circumference. The placement grooves (24) of the first fixed disk (21), the second fixed disk (22) and the third fixed disk (23) correspond to each other. The surfaces of the first fixed disk (21), the second fixed disk (22) and the third fixed disk (23) are uniformly provided with a number of through holes along the circumference.

4. A capping mechanism according to claim 1, characterized in that, The lifting assembly (4) includes a fixing plate (25), a lifting rod (26), several lifting platforms (27), and a second top rod (28) installed inside the lifting rod (26). The lifting rod (26) and the second top rod (28) pass through the lifting platform (27). The fixing plate (25) is installed in the placement slot (24) and fixed with bolts. The lifting rod (26) extends downward through the through hole and is connected to the torque assembly (5) with bolts. The second top rod (28) extends upward to the third fixing plate (23). The through hole extends downward into the torque assembly (5) and corresponds to the groove of the fixing member (20). Both ends of the lifting platform (27) are provided with brackets (29), and rollers (30) are installed on the brackets (29). The end of the bracket (29) is provided with a protective cover (31) to prevent the rollers (30) from falling off. Two symmetrical slide rail grooves (32) are opened on the fixing plate (25). One end of the bracket (29) is installed in the slide rail groove (32).

5. A capping mechanism according to claim 1, characterized in that, The cam assembly (3) includes a lifting cam (33) and a cover-removing cam (34). The lifting cam (33) is located between the first fixed plate (21) and the second fixed plate (22). Both the lifting cam (33) and the cover-removing cam (34) have circular lifting grooves (35) along their surfaces. One end of the lifting groove (35) is at the bottom and the other end is at the top. The lifting groove (35) is used to place the other side roller (30) of the lifting platform (27). The lifting cam (33) controls the up and down movement of the lifting rod (26), and the cover-removing cam (34) controls the movement of the top rod (28).

6. A capping mechanism according to claim 1, characterized in that, The material assembly (2) is provided with a double-layer material tray (36) for placing bottle caps. The material tray is provided with material grooves (37) that correspond to the capping head assembly (6) evenly distributed along the outer surface circumferentially.

Images