A new four-station one-wheel

Abstract

A new four-station one round relates to cigarette wrapping equipment technical field, solve the existing new four-station one round paper clamp structure has short life, poor reliability of the technical shortcomings, including wheel body, wheel body fixedly installed with die box, jaw mechanism, and jaw drive mechanism; Wheel body fixedly installed with magnetic attraction open spring closed paper clamp; Paper clamp includes engineering plastic paper clamp body, pivoted on the paper clamp body rotating open by magnetic force of the movable clamp arm, and reset spring; The movable clamp arm pivoted on the paper clamp body is rotated open by the magnetic force of the magnet fixed on the corresponding station, the engineering plastic paper clamp body reduces the weight, reduces the rotational inertia, is more stable, reduces vibration and impact. Engineering plastics have very high strength and wear resistance, also have self-lubricating, when contact with aluminum foil, can reduce the friction coefficient, not only can reduce the wear of the parts itself, prolong the service life, but also can reduce the risk of scratching the aluminum foil.

Description

Technical Field

[0001] This invention relates to the field of tobacco packaging equipment technology, specifically to a structural improvement of tobacco packaging equipment. Background Technology

[0002] In cigarette packaging equipment, the cigarette transfer wheel used to receive cigarettes arranged in a 7-6-7 pattern from the mold box conveyor belt and prepare them for aluminum foil packaging is called the first wheel or No. 1 wheel in the industry. Early No. 1 wheels used two mold boxes and two sets of clamping mechanisms corresponding to two workstations; current No. 1 wheels use four mold boxes and four sets of clamping mechanisms corresponding to four workstations, and are referred to in the industry as the new four-station No. 1 wheel.

[0003] As a high-speed rotating device, the new four-station No. 1 roller has relatively high material requirements. Statistics from a long period of equipment component replacement revealed that the paper gripper in the No. 1 roller assembly was replaced most frequently. The original No. 1 roller paper gripper was fixed with screws, which was not secure enough, as it was prone to loosening and falling off due to forces from various directions during high-speed operation. Summary of the Invention

[0004] In summary, the main objective of this invention is to address the shortcomings of existing novel four-station No. 1 wheel paper clamping devices, such as short lifespan and poor reliability, and to propose a novel four-station No. 1 wheel.

[0005] To address the shortcomings of the technology proposed in this invention, the following technical solution is adopted: A novel four-station wheel includes a wheel body (1), on which four mold boxes (2) corresponding to four different workstations are fixedly installed. Four sets of claw mechanisms (3) corresponding to the four mold boxes (2) are movably connected to the wheel body (1), and a claw drive mechanism located inside the wheel body (1) to drive the opening and closing of the four sets of claw mechanisms (3). The wheel body (1) is characterized by a set of magnetically operated and elastically closed paper clamps (4) fixedly installed at the wheel side edge between every two adjacent mold boxes (2). The paper clamps (4) include an engineering plastic paper clamp body (41), a fixed mounting plate (42) clamping and fixing the paper clamp body (41) onto the wheel body (1), and a movable clamping arm (43) pivotally connected to the paper clamp body (41) and opened by magnetic rotation. The movable clamping arm (43) is elastically driven to cooperate with the paper clamping body (41) to clamp the aluminum foil paper with a return spring (44); the movable clamping arm (43) includes an integrally formed clamping arm part (431), a return part (432) and a limiting part (433); the clamping arm part (431) and the return part (432) form an L-shaped structure, and the connection between the clamping arm part (431) and the return part (432) is movably connected to the paper clamping body (41) through a pivot shaft (434); the return part (432) and the paper clamping body (41) are elastically connected through the return spring (44); the limiting part (433) is vertically connected to the inner side wall of the clamping arm part (431), and a limiting groove (411) is provided on the paper clamping body (41) to limit the opening angle of the limiting part (433) around the pivot shaft (434) by a clearance fit with the limiting part (433).

[0006] Further defining technical features of the present invention include: The limiting part (433) is provided with a transverse limiting block (4331) at one end of the limiting groove (411), and the limiting part (433) and the clamping arm part (431) form a T-shaped structure; a longitudinal positioning groove (4332) is also provided on the limiting part (433); the paper clamping body (41) is provided with a positioning block (413) that slides with the positioning groove (4332) on the groove wall of the limiting groove (411).

[0007] The paper clamp body (41) is provided with a spring cavity (412), and the reset spring (44) is placed in the spring cavity (412).

[0008] The paper clamp body (41) is provided with an arc groove (414), and the fixed mounting plate (42) is fastened to the edge of the wheel body (1) through the arc groove (414) by a locking member.

[0009] The surface of the mold (2) is coated with a PVD physical vapor deposition coating.

[0010] The wheel body (1) is provided with a sealed cavity (11) for sealing and accommodating the pawl drive mechanism. A cavity cover (12) is provided at the opening of the sealed cavity (11), and a sealing cover (13) is provided on the cavity cover (12). Each pawl mechanism (3) includes a first outer pawl arm (31), a second outer pawl arm (32), a first inner pawl arm (33), a second inner pawl arm (34), a first linkage shaft (35), and a second linkage shaft (36). The first linkage shaft (35) and the second linkage shaft (36) are inserted parallel to each other into the sealed cavity (11). The two ends of the first linkage shaft (35) are fastened to the first outer pawl arm (31) and the first inner pawl arm (33) outside the sealed cavity (11). The two ends of the second linkage shaft (36) are fastened to the second outer pawl arm (32) and the second inner pawl arm outside the sealed cavity (11). (34) Fastening connection; a first swing arm (351) and a second swing arm (361) are also provided in the sealed cavity (11) and are respectively fixedly connected to the first linkage shaft (35) and the second linkage shaft (36). The driving ends of the first swing arm (351) and the second swing arm (361) are respectively provided with a first roller (352) and a second roller (362); the claw driving mechanism includes a double-sided grooved cam (51) and a phase adjustment rod (52) placed in the sealed cavity (11). One end of the phase adjustment rod (52) is fixedly connected to the center of the double-sided grooved cam (51), and the other end is placed outside the bottom of the flange (14) of the wheel body (1); the first roller (352) and the second roller (362) are respectively placed in the grooves on two different surfaces of the double-sided grooved cam (51).

[0011] The double-sided grooved cam (51) has an oil passage hole (511) between the bottom of the grooves on the two different surfaces.

[0012] The movable clamping arm (43) is made of iron.

[0013] The movable clamping arm (43) is provided with a screw hole (4341), and a pin locking screw is screwed into the screw hole (4341) to lock the pivot shaft (434) on the movable clamping arm (43).

[0014] The beneficial effects of this invention are as follows: The paper clamp of this invention adopts an engineering plastic paper clamp body. The paper clamp body is clamped and fixedly mounted on the wheel body by mounting plates. The movable clamping arm, pivotally connected to the paper clamp body, is rotated and opened by the magnetic force of a fixed magnet at the corresponding work position. The engineering plastic paper clamp body reduces weight. Engineering plastic has a much lower density than metal, which can significantly reduce the weight of moving parts, reduce rotational inertia, and help the equipment run more smoothly at high speeds, reducing vibration and impact, and improving the operating speed of the equipment. Engineering plastic has extremely high strength and wear resistance, reducing wear and noise. Engineering plastic usually also has self-lubricating properties, which can reduce the coefficient of friction when in contact with aluminum foil, not only reducing the wear of the parts themselves and extending their service life, but also reducing the risk of scratching the aluminum foil, while reducing the operating noise of the equipment. This ensures that the paper clamp maintains stable performance under long-term high-frequency use, and its light weight makes it easy to disassemble and maintain. Engineering plastic is softer than metal, which can play a better role in buffering and protecting when in direct contact with fragile aluminum foil, reducing product quality defects caused by hard impacts, and will not reduce the effectiveness of use due to wear. The movable clamping arm is opened via magnetic attraction control using a permanent magnet alloy material on the outer side of the wheel. This permanent magnet alloy material possesses high coercivity and high magnetic energy product, generating a strong magnetic field that is not easily demagnetized, ensuring the long-lasting and stable magnetic attraction function. Its high strength, high hardness, wear resistance, and corrosion resistance enhance the overall strength and durability of the paper clamp, ensuring stability and accuracy even in high-speed operation and frequent friction environments. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of the present invention; Figure 3 This is a schematic diagram of the rear view structure of the present invention; Figure 4 This is a schematic diagram of the right-side structure of the present invention; Figure 5 This is a top view of the structure of the present invention; Figure 6 This is a simplified three-dimensional structural diagram of the present invention; Figure 7 for Figure 6 A schematic diagram of the decomposed structure; Figure 8 This is a three-dimensional structural diagram of the claw drive mechanism of the present invention; Figure 9 for Figure 8 A schematic diagram of the decomposed structure; Figure 10 This is a schematic diagram of the double-sided grooved cam and the linkage shaft in the engagement state of the present invention; Figure 11This is a three-dimensional structural diagram of the double-sided grooved cam of the present invention; Figure 12 To and Figure 11 A three-dimensional structural diagram of a double-groove cam viewed from opposite angles; Figure 13 This is a schematic diagram of the three-dimensional structure of the paper clamp of the present invention; Figure 14 This is an exploded structural diagram of the paper clamp of the present invention. Detailed Implementation

[0016] The structure of the present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0017] Reference Figures 1 to 7 As shown, the present invention discloses a novel four-station wheel, comprising a wheel body 1. The back of the wheel body 1 is fixedly mounted to the end of the power output shaft of the whole machine through a flange 14. Under the drive of the power output shaft, the wheel body 1 rotates 360 degrees at high speed. Four mold boxes 2 corresponding to four different workstations are fixedly mounted on the wheel body 1, that is, four mold boxes 2 are evenly distributed on the wheel body 1. In order to prevent them from falling off during rotation after entering the mold box 2, four sets of claw mechanisms 3 corresponding to the four mold boxes 2 are movably connected to the wheel body 1. The four sets of claw mechanisms 3 can rotate with the wheel body 1. In order to accurately control the opening and closing of the four sets of claw mechanisms 3, a claw drive mechanism for driving the opening and closing of the four sets of claw mechanisms 3 is provided inside the wheel body 1.

[0018] The novel four-station wheel of the present invention has a set of magnetically opening and elastically closing paper clamps 4 fixedly installed at the wheel side edge position of the wheel body 1 between every two adjacent mold boxes 2. The function of the paper clamps 4 is to clamp the aluminum foil paper of the packaged cigarettes. The paper clamps 4 rotate with the wheel body 1. After entering the loading and unloading station of aluminum foil paper, the permanent magnet alloy material in the gap of the wheel body 1 magnetically controls the opening. During the rotation, the paper clamps the aluminum foil paper under the action of elasticity.

[0019] The paper clamp 4 specifically includes a paper clamp body 41 made of engineering plastic, a fixed mounting plate 42 that clamps and fixes the paper clamp body 41 to the wheel body 1, a movable clamping arm 43 that is pivotally connected to the paper clamp body 41 and rotates under magnetic force, and a return spring 44 that elastically drives the movable clamping arm 43 to cooperate with the paper clamp body 41 to clamp the aluminum foil. The paper clamp body 41 is made of engineering plastic not only because it is lightweight and can reduce rotational inertia, which helps the equipment to run more smoothly at high speeds and reduce vibration and impact, but also because engineering plastic has extremely high strength, wear resistance and self-lubrication. When in contact with aluminum foil, it can reduce the coefficient of friction, which can not only reduce the wear of the components themselves and extend their service life, but also reduce the risk of scratching the aluminum foil, while reducing the operating noise of the equipment, and can ensure that the paper clamp maintains stable performance under long-term high-frequency use. The movable clamping arm 43 is made of iron, which is intended to be magnetically controlled. The movable clamping arm 43 is opened by the magnetic attraction of a permanent magnet alloy material on the outer side of a wheel. Compared with mechanical contact control, this ensures that the paper clamp can maintain stability and accuracy in high-speed operation and frequent friction environments.

[0020] The movable clamping arm 43 specifically includes an integrally formed clamping arm portion 431, a reset portion 432, and a limiting portion 433; the clamping arm portion 431 and the reset portion 432 form an L-shaped structure, and the connection between the clamping arm portion 431 and the reset portion 432 is movably connected to the paper clamping device body 41 through a pivot shaft 434; the reset portion 432 and the paper clamping device body 41 are elastically connected through a reset spring 44; the limiting portion 433 is vertically connected to the inner side wall of the clamping arm portion 431, and a limiting groove 411 is provided on the paper clamping device body 41 to fit the limiting portion 433 with a clearance and limit the opening angle of the limiting portion 433 around the pivot shaft 434. In normal operation, the return spring 44 elastically abuts against the return part 432 of the movable clamping arm 43, and the paper clamping opening 40 of the paper clamp 4 is closed. When the movable clamping arm 43 is in the magnetically open state, the return spring 44 is compressed, the paper clamping opening of the paper clamp 4 opens, and the opening range of the paper clamping opening 40 of the paper clamp 4 is controlled by the limiting part 433 and the limiting groove 411. A preferred embodiment is that: one end of the limiting part 433 located in the limiting groove 411 is provided with a transverse limiting block 4331, and the limiting part 433 and the clamping arm part 431 form a T-shaped structure; a longitudinal positioning groove 4332 is also provided on the limiting part 433; the upper wall of the upper groove 411 of the paper clamp body 41 is provided with a positioning block 413 that slides with the positioning groove 4332. The cooperation between the positioning groove 4332 and the positioning block 413 can better ensure that the paper clamp maintains stability and accuracy in environments with high-speed operation and frequent friction.

[0021] The paper clamp body 41 is provided with a spring cavity 412, and the return spring 44 is placed in the spring cavity 412. Figure 14As shown, when assembling the paper clamp body 41, the limiting part 433 can be first inserted into the limiting groove 411 by translation. Then, the movable clamping arm 43 is moved to the right so that the positioning groove 4332 cooperates with the positioning block 413. Then, the return spring 44 in the spring cavity 412 is compressed so that the return part 432 is pressed against the return spring 44. Finally, the pivot shaft 434 is inserted into the movable clamping arm 43 through the shaft hole of the paper clamp body 41, and the pivot shaft 434 is locked and fixed on the movable clamping arm 43 by screwing the pin locking screw into the screw hole 4341 of the movable clamping arm 43.

[0022] To facilitate precise adjustment of the paper clamp 4's installation position, the paper clamp body 41 is provided with an arc-shaped groove 414, and the fixed mounting plate 42 is fastened to the edge of the wheel body 1 via the arc-shaped groove 414 through a locking member.

[0023] Existing mold boxes are generally made of steel, which is prone to oxidation and rust, significantly reducing their corrosion resistance, strength, and precision. The mold box 2 of this invention has a coating formed by PVD (Physical Vapor Deposition) on its surface. The coating material can be titanium nitride or titanium carbonitride. This coating makes the mold box surface extremely smooth and lubricated, significantly reducing the coefficient of friction on the parts' surfaces, maintaining a precise channel shape over a long period, effectively reducing problems such as cigarette jamming and misalignment, ensuring high-speed and stable operation of the production line, and guaranteeing smooth and unobstructed cigarette transport. This coating process can withstand billions of cycles of repeated friction from cigarettes, with a lifespan far exceeding that of ordinary steel, significantly reducing spare parts costs and replacement frequency, and physically ensuring the cleanliness of cigarettes during transport.

[0024] To address the shortcomings of existing semi-open wheel body 1 structures that rely on grease lubrication, which is prone to attracting dust and smoke, this invention addresses the issue of insufficient technology. The wheel body 1 of this invention features a sealed cavity 11 to enclose a pawl drive mechanism. The opening of the sealed cavity 11 is fitted with a cavity cover 12, and the cavity cover 12 is fitted with a sealing cap 13. Each pawl mechanism 3 includes a first outer pawl arm 31, a second outer pawl arm 32, a first inner pawl arm 33, a second inner pawl arm 34, a first linkage shaft 35, and a second linkage shaft 36. The first linkage shaft 35 and the second linkage shaft 36 are parallel and movably inserted into the sealed cavity 11. Both ends of the first linkage shaft 35 are securely connected to the first outer pawl arm 31 and the first inner pawl arm 33 outside the sealed cavity 11. Both ends of the second linkage shaft 36 are securely connected to the second outer pawl arm 32 and the second inner pawl arm 34 outside the sealed cavity 11. The sealed cavity 11 also contains components that are respectively connected to the first linkage shaft 35 and the second linkage shaft 36. The first swing arm 351 and the second swing arm 361 are fixedly connected. The driving ends of the first swing arm 351 and the second swing arm 361 are respectively provided with a first roller 352 and a second roller 362. The chuck driving mechanism includes a double-sided grooved cam 51 and a phase adjustment rod 52 placed in the sealed cavity 11. One end of the phase adjustment rod 52 is fixedly connected to the center of the double-sided grooved cam 51, and the other end is placed outside the bottom of the flange 14 of the wheel body 1. The phase adjustment rod 52 is relatively stationary during the rotation of the wheel body 1, and the double-sided grooved cam 51 is also relatively stationary. Each roller moves synchronously in the double-sided grooved cam 51 as the wheel body 1 rotates. The rotation of each linkage shaft is controlled according to the cam curve of the double-sided grooved cam 51, which drives the opening and closing of the chuck mechanism. The first roller 352 and the second roller 362 are respectively placed in the grooves on two different surfaces of the double-sided grooved cam 51. The cavity cover 12 of the present invention is designed to facilitate the installation of components such as the swing arms and the double-sided grooved cam 51 into the sealed cavity 11. The cavity cover 12 has shaft holes for the insertion of each linkage shaft, and each linkage shaft is movably supported by the cavity cover 12. In order to facilitate the injection of lubricating oil into the sealed cavity 11 or regular maintenance, the present invention also provides a sealing cover 13 on the cavity cover 12 that is easy to open independently, which is more convenient than disassembling the cavity cover 12.

[0025] To facilitate better flow of grease within the sealed cavity 11, an oil passage hole 511 is provided between the bottoms of the grooves on the two different surfaces of the double-sided grooved cam 51.

[0026] This invention uses a double-sided grooved wheel mechanism for reset, eliminating the need for a spring reset method. The grooved wheel reset motion has more precise motion trajectory characteristics, making the swing arm opening and closing accurate and effectively preventing quality accidents caused by spring breakage.

Claims

1. A novel four-station wheel, comprising a wheel body (1), four mold boxes (2) corresponding to four different workstations fixedly mounted on the wheel body (1), four sets of claw mechanisms (3) respectively corresponding to the four mold boxes (2) movably connected to the wheel body (1), and a claw drive mechanism disposed inside the wheel body (1) to drive the opening and closing of the four sets of claw mechanisms (3); characterized in that: A set of magnetically operated and elastically closed paper clamps (4) are fixedly installed at the wheel side edge of the wheel body (1) between every two adjacent mold boxes (2); the paper clamp (4) includes a paper clamp body (41) of engineering plastic, a fixed mounting piece (42) that clamps and fixes the paper clamp body (41) on the wheel body (1), a movable clamping arm (43) that is pivotally connected to the paper clamp body (41) and rotates and opens by magnetic force, and a return spring (44) that elastically drives the movable clamping arm (43) to cooperate with the paper clamping body (41) to clamp the aluminum foil paper; the movable clamping arm (43) includes an integrally formed clamping arm part ( 431), reset part (432) and limiting part (433); the clamping arm part (431) and the reset part (432) form an L-shaped structure. The connection between the clamping arm part (431) and the reset part (432) is movably connected to the paper clamp body (41) through the pivot shaft (434). The reset part (432) and the paper clamp body (41) are elastically connected through the reset spring (44). The limiting part (433) is vertically connected to the inner wall of the clamping arm part (431). The paper clamp body (41) is provided with a limiting groove (411) that is clearance-fitted with the limiting part (433) and limits the opening angle of the limiting part (433) around the pivot shaft (434).

2. The novel four-station single-wheel according to claim 1, characterized in that: The limiting part (433) is provided with a transverse limiting block (4331) at one end of the limiting groove (411), and the limiting part (433) and the clamping arm part (431) form a T-shaped structure; a longitudinal positioning groove (4332) is also provided on the limiting part (433); the paper clamping body (41) is provided with a positioning block (413) that slides with the positioning groove (4332) on the groove wall of the limiting groove (411).

3. The novel four-station single-wheel according to claim 1, characterized in that: The paper clamp body (41) is provided with a spring cavity (412), and the reset spring (44) is placed in the spring cavity (412).

4. The novel four-station single-wheel according to claim 1, characterized in that: The paper clamp body (41) is provided with an arc groove (414), and the fixed mounting plate (42) is fastened to the edge of the wheel body (1) through the arc groove (414) by a locking member.

5. The novel four-station single-wheel according to claim 1, characterized in that: The surface of the mold (2) is coated with a PVD physical vapor deposition coating.

6. The novel four-station single-wheel according to claim 1, characterized in that: The wheel body (1) is provided with a sealed cavity (11) for sealing and accommodating the pawl drive mechanism. A cavity cover (12) is provided at the opening of the sealed cavity (11), and a sealing cover (13) is provided on the cavity cover (12). Each pawl mechanism (3) includes a first outer pawl arm (31), a second outer pawl arm (32), a first inner pawl arm (33), a second inner pawl arm (34), a first linkage shaft (35), and a second linkage shaft (36). The first linkage shaft (35) and the second linkage shaft (36) are inserted parallel to each other into the sealed cavity (11). The two ends of the first linkage shaft (35) are fastened to the first outer pawl arm (31) and the first inner pawl arm (33) outside the sealed cavity (11). The two ends of the second linkage shaft (36) are fastened to the second outer pawl arm (32) and the second inner pawl arm outside the sealed cavity (11). (34) Fastening connection; a first swing arm (351) and a second swing arm (361) are also provided in the sealed cavity (11) and are respectively fixedly connected to the first linkage shaft (35) and the second linkage shaft (36). The driving ends of the first swing arm (351) and the second swing arm (361) are respectively provided with a first roller (352) and a second roller (362); the claw driving mechanism includes a double-sided grooved cam (51) and a phase adjustment rod (52) placed in the sealed cavity (11). One end of the phase adjustment rod (52) is fixedly connected to the center of the double-sided grooved cam (51), and the other end is placed outside the bottom of the flange (14) of the wheel body (1); the first roller (352) and the second roller (362) are respectively placed in the grooves on two different surfaces of the double-sided grooved cam (51).

7. A novel four-station single-wheel according to claim 6, characterized in that: The double-sided grooved cam (51) has an oil passage hole (511) between the bottom of the grooves on the two different surfaces.

8. The novel four-station single-wheel according to claim 1, characterized in that: The movable clamping arm (43) is made of iron.

9. A novel four-station single-wheel according to claim 1, characterized in that: The movable clamping arm (43) is provided with a screw hole (4341), and a pin locking screw is screwed into the screw hole (4341) to lock the pivot shaft (434) on the movable clamping arm (43).

10. A novel four-station single-wheel according to claim 5, characterized in that: The surface of the mold (2) is coated with titanium nitride.

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