Inner liner paper reel inner core

Abstract

The utility model relates to a lining paper reel inner core which comprises an inner core body, a round hole is formed in the center of the inner core body, a plurality of convex anti-slip strips are evenly distributed on the inner ring of the round hole, a tensioning mandrel is installed in the center of the inner core body in a sleeved mode, and a plurality of tensioning blocks are arranged in the circumferential direction of the side wall of the tensioning mandrel. The convex anti-slip strips and the tensioning blocks are alternately installed in the circumferential direction of the tensioning mandrel, the contact area between the inner core and the tensioning mandrel is increased, and therefore the surface static friction coefficient is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette production equipment, in particular to an inner core of a lining paper reel. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Common materials used in cigarette rolls include lining paper, frame paper, transparent film, etc. Figure 1 As shown, the common tobacco material reel is used in conjunction with the inner core of the reel clamping device with a tensioning function in the equipment. The reel is sleeved on the outer surface of the expansion tensioning mandrel of the clamping device, and the inner wall of the inner core is supported by a metal pneumatic tensioning block. Currently, all ultra-high-speed units use reel-type tobacco materials, and the inner core of the lining paper material reel is made of multi-layer paper glue material;

[0004] The following technical problems exist in the tobacco material reels driven by the current high-speed units:

[0005] (1) The static friction coefficient of the inner surface of the inner core and the five metal pneumatic tensioning blocks of the reel clamping device is relatively low, usually 0.20-0.40. Under the conditions of starting and braking of high-speed units, large inertial displacement is likely to occur. The liner paper reel will rotate a certain angle along the outer surface of the tensioning core shaft. In order to convey the liner paper, the liner paper is often wound through multiple rollers, and the liner paper has a certain tension after winding. After the inertial displacement occurs, the liner paper is easily broken. After the liner paper breaks, the machine needs to be shut down for processing, which affects the work efficiency.

[0006] (2) The paper-bonded material inner core has low deformation resistance and load-bearing capacity under full-speed operation of the ultra-high-speed unit. When a plate of liner paper is used up, the inner core of the bonded paper material is prone to deformation and cannot be reused, so it is discarded as scraps. Utility Model Content

[0007] The utility model aims to provide an inner core of a liner paper reel, which can make the inner core and the reel surface fit completely, have more contact and tension with the reel clamping device, and significantly optimize the material stability and load-bearing capacity.

[0008] To achieve the above-mentioned purpose, the utility model proposes an inner core of an inner lining paper reel, comprising an inner core, a circular hole is opened in the center of the inner core, a plurality of convex anti-slip strips are evenly distributed on the inner circle of the circular hole, a tensioning core shaft is sleeved in the center of the inner core, a plurality of tensioning blocks are arranged circumferentially along the side wall of the tensioning core shaft, and the convex anti-slip strips and the tensioning blocks are alternately installed along the circumference of the tensioning core shaft.

[0009] It is further configured that a tensioning block is centrally arranged between adjacent convex anti-slip strips.

[0010] It is further configured that a curved surface is provided at the end of the tensioning block, and the tensioning block is fitted with the inner wall of the inner core through the curved surface.

[0011] It is further configured that a curved surface is formed at the end of the convex anti-slip strip, and the convex anti-slip strip is fitted with a side wall of the tensioning core shaft.

[0012] It is further configured that the inner core and the convex anti-slip strip are both made of styrene-acrylonitrile copolymer, and the inner core material is made of styrene-acrylonitrile copolymer (AS resin). This material has excellent hardness, rigidity, dimensional stability and load-bearing capacity, and is widely used in processing fields such as packaging materials, medical products, and instrument accessories. The static friction coefficient of the surface after contacting the metal pneumatic tensioning block can reach 0.45-0.60, and can be recycled and reused many times.

[0013] It is further configured that the tensioning block is made of metal.

[0014] It is further configured that the inner core and the convex anti-slip strip are integrally formed, and the axial length of the convex anti-slip strip is equal to the overall axial length of the inner core.

[0015] It is further configured that the rear end of the tensioning mandrel is connected to a high-speed unit motor.

[0016] It is further configured that the tensioning mandrel, the inner core and the liner paper reel are coaxially arranged.

[0017] It is further configured that an inner lining paper reel is provided on the outer ring of the inner core, the inner lining paper reel is formed by winding the inner lining paper, and the end of the inner lining paper is connected to the outer wall surface of the inner core.

[0018] Beneficial effects of one or more of the above technical solutions:

[0019] (1) When the material reel is loaded into place, the arc-shaped upper surface of the convex anti-slip strip of the inner core is completely fitted, contacted and tensioned with the surface of the equipment clamping device, that is, it is fitted with the part between the 5 equidistant pneumatic tensioning blocks. At the same time, after the pneumatic tensioning block of the equipment pops out 8.0 mm, it is completely fitted, contacted and tensioned with the non-raised area on the inner surface of the inner core. The contact surface between the equipment reel clamping device and the inner core is increased from the original 5 to 10, increasing the contact area and increasing the damping between the inner core and the tensioning mandrel, thereby avoiding the inertial displacement of the tensioning mandrel and the inner core when the unit is started and stopped.

[0020] (2) The inner core of the coil is arranged on the inner wall of the lining paper reel, and the outer wall of the inner core of the coil is in contact with the inner wall of the lining paper reel. At the same time, the inner core material adopts styrene-acrylonitrile copolymer with high load-bearing capacity. Under the action of the tension block, the inner core of the coil supports the lining paper reel, thereby improving the deformation resistance and load-bearing capacity of the lining paper reel. When a reel of lining paper is used up, the inner core of the coil can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.

[0022] Figure 1 It is a schematic diagram of the structure of the existing reel clamping device;

[0023] Figure 2 It is a schematic diagram of the structure of the utility model;

[0024] Figure 3 It is a schematic diagram of the installation structure of the inner core and the tensioning mandrel of the utility model.

[0025] In the figure: 1 tensioning mandrel; 2 tensioning block; 3 inner core; 31 round hole; 4 convex anti-slip strip; 5 inner lining paper reel; 6 arc surface; 7 high-speed unit motor. DETAILED DESCRIPTION

[0026] The specific implementation of this embodiment is described below in conjunction with the accompanying drawings.

[0027] Reference Figure 2 and Figure 3 , an inner core of an inner liner paper reel, comprising an inner core, a circular hole 31 is provided in the center of the inner core 3, a plurality of convex anti-slip strips 4 are evenly distributed in the inner circle of the circular hole 31, a tensioning mandrel 1 is sleeved and installed in the center of the inner core 3, a plurality of tensioning blocks 2 are arranged along the circumference of the side wall of the tensioning mandrel 1, and the convex anti-slip strips 4 and the tensioning blocks 2 are alternately installed along the circumference of the tensioning mandrel 1; wherein the tensioning mandrel 1 is an existing 500 series metal expansion key air shaft, as the prior art, when the outer inner core 3 needs to be locked, as long as, facing the air shaft The process can be completed by inflating the air nozzle. The inflatable shaft is generally composed of a core, an air pipeline and an end cover. The air pipeline allows the shaft to be injected or deflated from the air pipeline. The inflation and deflation can be controlled by an automatic cylinder in conjunction with a valve body. When the air pipeline is inflated, the gas lifts up the tensioning block 2, and then the tensioning block 2 supports external components such as a round paper tube or the inner core 3 in this embodiment. When unloading is required, the cylinder controls the deflation of the air pipeline, and the tensioning block 2 no longer supports the inner core 3, so the supported components can be removed.

[0028] A tension block 2 is arranged in the middle between adjacent convex anti-skid strips 4. An arc surface 6 is provided at the end of the tension block 2, and the arc length is 10.0 mm. The tension block 2 is fitted with the inner wall of the inner core 3 through the arc surface 6. An arc surface 6 is provided at the end of the convex anti-skid strip 4, and the arc length is 10.0 mm. The convex anti-skid strip 4 is fitted with the side wall of the tensioning mandrel 1. After fitting, the contact surface between the tensioning mandrel 1 and the inner core 3 increases from 5 to 10, and the increased contact area is 0.016 m 2 .

[0029] Reference Figure 2 The inner core 3 and the convex anti-slip strip 4 are both made of styrene-acrylonitrile copolymer. The inner core 3 is made of styrene-acrylonitrile copolymer, which has excellent hardness, rigidity, dimensional stability and load-bearing capacity. It is widely used in processing fields such as packaging materials, medical products, and instrument accessories. The static friction coefficient of the surface after contacting the metal pneumatic tensioning block 2 can reach 0.45-0.60, and it can be recycled and reused many times.

[0030] The inner core 3 molding process is: combined with the characteristics of the raw material styrene-acrylonitrile copolymer, it needs to be dried at 80°C for 4 hours before the injection molding process is implemented. The melting temperature of the raw material is 200-270°C, the mold temperature is 40-80°C, and a high-speed injection method is used with an injection pressure of 350-1300bar.

[0031] The tensioning block 2 is made of metal and is slidably arranged on the side wall of the tensioning core shaft 1. The end of the tensioning core shaft 1 is connected to the pneumatic cylinder. After the pneumatic cylinder injects air into the tensioning core shaft 1, the gas drives the tensioning block 2 to move. When the liner paper reel 5 is loaded in place, the tensioning block 2 in the tensioning core shaft 1 is pushed outward to press against the inner core 3 to achieve tensioning.

[0032] The inner core 3 and the convex anti-slip strip 4 are integrally formed. The axial length of the convex anti-slip strip 4 is equal to the overall axial length of the inner core 3, which is 160.0 mm. The top of the protrusion is a perfect circular arc with an arc length of 20.0 mm and a protrusion height of 8.0 mm.

[0033] The rear end of the tensioning core shaft 1 is connected to the high-speed unit motor 7. The high-speed unit motor 7 is an existing rotating motor. The motor is connected to the tensioning core shaft 1 through a connecting shaft. Due to the high-speed rotation of the motor, it only contacts the lining paper reel 5 through the tensioning block 2. The static friction coefficient of the surface after contact is low, usually 0.20-0.40. When the high-speed unit motor 7 is started and stopped, due to the low friction coefficient, the lining paper reel 5 will rotate and displace a certain angle along the tensioning core shaft 1 under the influence of inertia. Therefore, the tensioning blocks 2 and convex anti-slip strips 4 alternately installed in this embodiment can increase the contact area, thereby increasing the static friction coefficient of the surface and preventing inertial sliding.

[0034] The tensioning core shaft 1, the inner core 3 and the inner lining paper reel 5 are coaxially arranged. Through the abutment of the tensioning core shaft 1 against the inner core 3 and the arrangement of the convex anti-slip strip 4, the centers of the tensioning core shaft 1 and the inner core 3 are on the same axis. At the same time, the inner lining paper reel 5 is fixed to the outside of the inner core 3. The coaxial arrangement prevents shaking during rotation.

[0035] The inner core 3 is provided with an inner lining paper reel 5 on the outer ring. The inner lining paper reel 5 is formed by winding the inner lining paper. The end of the inner lining paper is connected to the outer wall of the inner core 3 by glue.

[0036] The clamping process is:

[0037] When the inner liner paper reel 5 is loaded in place on the outer periphery of the tensioning mandrel 1, the tensioning mandrel 1 drives the tensioning block 2 through the cylinder. After the tensioning block pops out 8.0 mm, it is completely fitted with the area between the convex anti-slip strip 4 on the inner surface of the inner core 3. At this time, the arc-shaped upper surface of the convex anti-slip strip of the inner core 3 made of styrene-acrylonitrile copolymer is completely tensioned with the surface of the tensioning mandrel 1. After the clamping is completed, the contact surface between the tensioning mandrel 1 and the inner core 3 increases from 5 to 10, and the increased contact area is 0.016 m 2 .

[0038] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A liner paper reel inner core, characterized in that: It includes an inner core, a circular hole is opened in the center of the inner core, a plurality of convex anti-skid strips are evenly distributed on the inner circle of the circular hole, a tensioning mandrel is sleeved and installed in the center of the inner core, a plurality of tensioning blocks are arranged circumferentially along the side wall of the tensioning mandrel, and the convex anti-skid strips and the tensioning blocks are alternately installed along the circumference of the tensioning mandrel.

2. The inner core of the lining paper reel according to claim 1, characterized in that: A tensioning block is centrally arranged between adjacent convex anti-slip strips.

3. The inner core of the lining paper reel according to claim 1, characterized in that: The end of the tension block is provided with an arc surface, and the tension block is fitted with the inner wall iron of the inner core through the arc surface.

4. The inner core of the liner paper reel according to claim 1, characterized in that: The end of the convex anti-slip strip is provided with an arc surface, and the convex anti-slip strip is fitted with the side wall of the tensioning core shaft.

5. The inner core of the lining paper reel according to claim 1, characterized in that: The inner core and the convex anti-slip strip are both made of styrene-acrylonitrile copolymer.

6. The inner core of the liner paper reel according to claim 1, characterized in that: The tensioning block is made of metal.

7. The inner core of the liner paper reel according to claim 1, characterized in that: The inner core and the convex anti-slip strip are integrally formed.

8. The inner core of the liner paper reel according to claim 1, characterized in that: The rear end of the tensioning mandrel is connected to the high-speed unit motor.

9. The inner core of the liner paper reel according to claim 1, characterized in that: The tensioning mandrel, the inner core and the inner lining paper reel are coaxially arranged.

10. The inner core of the liner paper reel according to claim 1, characterized in that: An inner lining paper reel is arranged on the outer ring of the inner core. The inner lining paper reel is formed by winding the inner lining paper. The end of the inner lining paper reel is connected to the outer wall surface of the inner core.

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