Material shaft mechanism capable of automatically clamping bobbin paper

Abstract

The invention discloses a material shaft mechanism capable of automatically clamping bobbin paper, and relates to the field of cigarette production equipment.The material shaft mechanism comprises a hollow shaft, a driving assembly, a push plate, N lifting arms and N supporting tables, N notches are formed in the side wall of the hollow shaft in a surrounding mode, the N supporting tables are fixedly installed in the N notches respectively, each supporting table is provided with a containing cavity, and the containing cavities are communicated with the push plate. A rectangular hole and two through holes are formed in the bottom of the push plate, the push plate is driven by the driving assembly to move towards the lifting arms, the multiple lifting arms are pushed by the push plate in the moving process, and then under the force transmission action of the lifting arms, the multiple clamping plates are driven to be away from one another and conduct multi-point clamping on an inner core of bobbin paper; therefore, the bobbin paper is quickly clamped by adopting a mechanical linkage structure, the response is instantaneous, the clamping force is consistent, and the bottleneck problems of service life and stability in a high-frequency use scene in the tobacco industry are fundamentally solved.

Description

Technical Field

[0001] The invention belongs to the field of cigarette production equipment, and in particular relates to a material shaft mechanism capable of automatically clamping coiled paper. Background Art

[0002] Rolling paper, also known as cigarette paper or tobacco paper, is a key raw material in cigarette production. It is a special paper used to wrap tobacco to make cigarettes.

[0003] In cigarette production equipment, the material shaft mechanism is responsible for carrying the paper coils, ensuring their stability and continuity during the processing.

[0004] At present, most material shafts use pneumatic tensioning material shafts. When general pneumatic tensioning material shafts clamp the paper, compressed air needs to be connected. Once the air pressure is unstable or the air source fails, the clamping function of the entire material shaft will be affected. In addition, due to the shortcomings of pneumatic tensioning material shafts, such as short service life, they are not suitable for use in the tobacco industry.

[0005] Therefore, we propose a material shaft mechanism that can automatically clamp the paper roll to solve the above problems. Summary of the Invention

[0006] At present, most material shafts use pneumatic tensioning material shafts, which are prone to failure due to high-frequency use, resulting in a short service life of the pneumatic tensioning material shaft. The present invention provides a material shaft mechanism that can automatically clamp the paper roll.

[0007] The present invention solves the technical problem by adopting a solution: a material shaft mechanism capable of automatically clamping a paper roll, comprising a hollow shaft, a drive assembly, a push plate, N lifting arms, and N supporting platforms, wherein the side wall of the hollow shaft is surrounded by N notches, and the N supporting platforms are respectively fixedly mounted in the N notches, and the supporting platforms have a receiving cavity with a rectangular hole and two through holes formed in the bottom thereof; A clamping plate is provided in the accommodating cavity of the support platform, and two limiting rods are fixedly installed on the bottom of the clamping plate. The inner ends of the limiting rods pass through the through holes and are fixedly installed with end caps. Two ear plates are fixedly installed on the bottom of the support platform, and the N lifting arms are respectively provided corresponding to the N support platforms. The upper end of the lifting arm passes through the rectangular hole and contacts the bottom of the clamping plate, and the middle section is hingedly installed between the two ear plates; The push plate corresponds to the lower ends of the N lifting arms. The driving assembly is installed at one end of the hollow shaft and can drive the push plate to move, so that the N lifting arms simultaneously drive the N clamping plates away from each other.

[0008] Preferably, a second spring is sleeved on the limiting rod, and the second spring is fixedly installed between the end cap and the support platform.

[0009] Preferably, the support platform is an iron integrally formed shell structure, a groove is provided at the bottom of the clamping plate, and a magnet for adsorbing the support platform is provided in the groove so that the clamping plate can be stored back into the accommodating cavity.

[0010] Preferably, one end of the hollow shaft is fixedly connected to an end cover, and a circular hole is respectively formed in the end cover and one end of the hollow shaft.

[0011] Preferably, the driving assembly includes a pull rod and a spring. The inner end of the pull rod passes through two circular holes and is fixedly connected to the push plate. A baffle is fixedly installed on the pull rod, and the baffle is located in the end cover. A set of springs is provided on the pull rod, and its two ends are respectively fixedly connected to the baffle and the outer end face of the hollow shaft.

[0012] Preferably, a handle is fixedly mounted on the outer end of the pull rod.

[0013] Preferably, the drive assembly includes a nut and an adjusting screw. The nut is fixedly mounted on the end cover and corresponds to the circular hole on the end cover. The adjusting screw is threadedly connected to the nut. Its optical axis end passes through the circular hole of the hollow shaft and is fitted with a bearing. The bearing is fixedly mounted on the push plate.

[0014] Preferably, a friction pad is provided on the surface of the clamping plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention drives the push plate to move toward the lifting arm through the driving component. During the movement, the push plate pushes multiple lifting arms, and then under the force transmission of the lifting arms, drives multiple clamping plates to move away from each other and clamp the inner core of the paper roll at multiple points, thereby adopting a mechanical linkage structure to achieve rapid clamping of the paper roll. Not only does it have an instantaneous response and consistent clamping force, it also fundamentally solves the life and stability bottleneck problems in high-frequency usage scenarios in the tobacco industry.

[0016] 2. The present invention uses spring 2. When the push plate moves away from the lifting arm, the spring 2 acts to quickly and stably retract the clamping plate into the accommodating cavity, thereby facilitating the removal of the paper roll and improving the convenience and safety of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of embodiment 1 of the present invention; Figure 2 This is a schematic diagram of a cross-sectional three-dimensional structure of an embodiment of the present invention; Figure 3 This is a front view structural diagram of embodiment 2 of the present invention.

[0018] In the figure: 1 hollow shaft, 2 end cover, 3 support platform, 4 splint, 51 handle, 52 pull rod, 53 baffle, 54 spring 1, 55 adjusting screw, 56 nut, 61 spring 2, 62 limit rod, 63 end cap, 71 ear plate, 72 lifting arm, 8 push plate. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and examples.

[0020] See also Figure 1-3 The present invention provides a technical solution for a material shaft mechanism that can automatically clamp the paper roll: Example 1: according to Figure 1 and Figure 2 As shown, it includes a hollow shaft 1, a drive assembly, a push plate 8, N lifting arms 72 and N support platforms 3. N slots are opened around the side wall of the hollow shaft 1. The number of slots, lifting arms 72 and support platforms 3 is at least two. In this embodiment, the number of slots, lifting arms 72 and support platforms 3 is four.

[0021] The four support platforms 3 are fixedly installed in the four slots respectively. The support platforms 3 have a receiving cavity with a rectangular hole and two through holes opened at the bottom.

[0022] A splint 4 is provided in the accommodating cavity of the support 3 to accommodate the splint 4. A friction pad is provided on the surface of the splint 4. The friction pad effectively increases the friction with the inner core of the paper coil to prevent slipping. Two limit rods 62 are fixedly installed on the bottom of the splint 4. The inner ends of the limit rods 62 pass through the through holes and are fixedly installed with end caps 63. Under the action of the limit rods 62, the splint 4 is ensured to move in a straight line. A spring 2 61 is provided on the limit rod 62. The spring 2 61 is fixedly installed between the end cap 63 and the support 3. Under the elastic force of the spring 2 61, the splint 4 is quickly and stably retracted into the accommodating cavity.

[0023] Two ear plates 71 are fixedly installed at the bottom of the support platform 3, and four lifting arms 72 are respectively set corresponding to the four support platforms 3. The upper end of the lifting arm 72 passes through the rectangular hole and contacts the bottom of the clamping plate 4. The middle section is hingedly installed between the two ear plates 71 through a pin shaft. The lifting arm 72 plays the role of transmitting the thrust of the push plate 8, so that the clamping plate 4 can clamp the paper.

[0024] The push plate 8 corresponds to the lower end of the four lifting arms 72. One end of the hollow shaft 1 is fixedly connected to the end cover 2. One end of the end cover 2 and the hollow shaft 1 are respectively provided with a circular hole. The driving assembly includes a pull rod 52 and a spring 54. The inner end of the pull rod 52 passes through the two circular holes and is fixedly connected to the push plate 8. A baffle 53 is fixedly installed on the pull rod 52. The baffle 53 is located in the end cover 2. The spring 54 is sleeved on the pull rod 52, and its two ends are respectively fixedly connected to the baffle 53 and the outer end surface of the hollow shaft 1. Under the tension of the spring 54, the pull rod 52 drives the push plate 8 to move toward the lifting arm 72. During the movement, the push plate 8 pushes multiple lifting arms 72, and then under the force transmission of the lifting arms 72, the multiple clamping plates 4 are driven to move away from each other and clamp the inner core of the paper roll at multiple points, thereby adopting a mechanical linkage structure to achieve rapid clamping of the paper roll. Not only does it respond instantly and have consistent clamping force, it also fundamentally solves the bottleneck problems of life and stability in high-frequency usage scenarios in the tobacco industry.

[0025] A handle 51 is fixedly mounted on the outer end of the pull rod 52. By using the handle 51, the pull rod 52 and the push plate 8 are pulled back to restore, so that the paper roll can be removed.

[0026] In this embodiment, the driving assembly adopts a solution of a pull rod 52 and a spring 54, which can realize the rapid clamping or loosening of the paper roll.

[0027] In specific use, the present invention provides a material shaft mechanism that can automatically clamp the paper roll. First, the paper roll is passed through the handle 51, and then the handle 51 is pulled outward to move the push plate 8 away from the lifting arm 72. At this time, the clamping plate 4 is retracted into the accommodating cavity, and the paper roll is sleeved on the hollow shaft 1. Then, the handle 51 is released. Under the pulling force of the spring 1 54, the pull rod 52 drives the push plate 8 to move toward the lifting arm 72. The push plate 8 pushes the multiple lifting arms 72 during the movement. Then, under the force transmitted by the lifting arms 72, the multiple clamping plates 4 are driven to move away from each other and clamp the inner core of the paper roll at multiple points. When the paper roll is finally unloaded, the handle 51 is pulled outward to move the push plate 8 away from the lifting arm 72, so that the clamping plate 4 no longer clamps the paper roll and the paper roll is removed.

[0028] Example 2: Based on the first embodiment, Figure 3 As shown, the drive assembly includes a nut 56 and an adjusting screw 55. The nut 56 is fixedly mounted on the end cover 2 and corresponds to the circular hole on the end cover 2. The adjusting screw 55 is threadedly connected to the nut 56. The optical axis end thereof passes through the circular hole of the hollow shaft 1 and is fitted with a bearing. The bearing is fixedly mounted on the push plate 8. By rotating the adjusting screw 55, the push plate 8 is driven to move, thereby clamping or loosening the paper roll.

[0029] In this embodiment, the drive assembly adopts a solution of adjusting screw 55 and nut 56, which can achieve precise clamping force control.

[0030] Example 3: Based on the first embodiment, Figure 3 As shown, the support platform 3 is an integrated iron shell structure, and a groove is provided at the bottom of the splint 4. A magnet is provided in the groove for adsorbing the support platform 3. When the push plate 8 is reset, the splint 4 is retracted into the accommodating cavity under the action of the magnet.

Claims

1. A material shaft mechanism capable of automatically clamping a paper roll, comprising a hollow shaft, a drive assembly, a push plate, N lifting arms, and N support platforms, characterized in that: N slots are formed around the side wall of the hollow shaft, and the N support platforms are fixedly installed in the N slots respectively. The support platforms have a receiving cavity, and a rectangular hole and two through holes are formed at the bottom thereof; A clamping plate is provided in the accommodating cavity of the support platform, and two limiting rods are fixedly installed on the bottom of the clamping plate. The inner ends of the limiting rods pass through the through holes and are fixedly installed with end caps. Two ear plates are fixedly installed on the bottom of the support platform, and the N lifting arms are respectively provided corresponding to the N support platforms. The upper end of the lifting arm passes through the rectangular hole and contacts the bottom of the clamping plate, and the middle section is hingedly installed between the two ear plates; The push plate corresponds to the lower ends of the N lifting arms. The driving assembly is installed at one end of the hollow shaft and can drive the push plate to move, so that the N lifting arms simultaneously drive the N clamping plates away from each other.

2. The material shaft mechanism capable of automatically clamping the paper roll according to claim 1, characterized in that: The limiting rod is sleeved with a second spring, which is fixedly installed between the end cap and the supporting platform.

3. The material shaft mechanism capable of automatically clamping the paper roll according to claim 1, characterized in that: The support platform is an iron integrally formed shell structure. A groove is provided at the bottom of the clamping plate. A magnet for adsorbing the support platform is provided in the groove so that the clamping plate can be stored back into the accommodating cavity.

4. The material shaft mechanism capable of automatically clamping the paper roll according to claim 1, characterized in that: One end of the hollow shaft is fixedly connected with an end cover, and the end cover and one end of the hollow shaft are respectively provided with a circular hole.

5. The material shaft mechanism capable of automatically clamping the paper roll according to claim 4, characterized in that: The driving assembly includes a pull rod and a spring. The inner end of the pull rod passes through two circular holes and is fixedly connected to the push plate. A baffle is fixedly installed on the pull rod, and the baffle is located in the end cover. A set of springs is provided on the pull rod, and its two ends are respectively fixedly connected to the baffle and the outer end surface of the hollow shaft.

6. The material shaft mechanism capable of automatically clamping the paper roll according to claim 5, characterized in that: A handle is fixedly installed on the outer end of the pull rod.

7. The material shaft mechanism capable of automatically clamping the paper roll according to claim 4, characterized in that: The driving assembly includes a nut and an adjusting screw. The nut is fixedly mounted on the end cover and corresponds to the circular hole on the end cover. The adjusting screw is threadedly connected to the nut. The optical axis end thereof passes through the circular hole of the hollow shaft and is fitted with a bearing. The bearing is fixedly mounted on the push plate.

8. The material shaft mechanism capable of automatically clamping the paper roll according to claim 1, characterized in that: A friction pad is provided on the surface of the clamping plate.

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