A tipping paper guide device of a tipping machine group and a tipping machine group

Abstract

This invention discloses a paper feeding guide device and a winding and splicing unit for a winding and splicing machine. The device includes a fixed shaft and an adjusting rod. A first connecting block and a second connecting block are connected between the fixed shaft and the adjusting rod. An inner cam and an outer cam are fixed on the adjusting rod section between the first and second connecting blocks. The inner and outer cams have similar structures and are spaced apart, with the inner and outer cams positioned opposite each other. An inner stop block, fitted onto the fixed shaft and the adjusting rod, is provided between the inner cam and the first connecting block. An outer stop block, fitted onto the fixed shaft and the adjusting rod, is provided between the outer cam and the second connecting block. An inner compression spring, fitted onto the adjusting rod, is provided between the inner stop block and the first connecting block. An outer compression spring, fitted onto the adjusting rod, is provided between the outer stop block and the second connecting block. A positioning mechanism is provided on the adjusting rod to achieve positioning of the adjusting rod in the circumferential and axial directions.

Description

Technical Field

[0001] This invention relates to the field of winding and splicing machines, and more specifically to a paper feeding guide device and a winding and splicing machine unit. Background Technology

[0002] The paper tape received by the rolling and splicing unit is unrolled from the paper reel, and after being conveyed, glued, and cut into sheets by various functional components of the equipment, it is finally wrapped around the double-length cigarette pack to form a double-length filter cigarette. The double-length filter cigarette is then conveyed and finally cut by the filter cigarette cutting drum to form two filter cigarettes of equal length.

[0003] The tipping paper guide device is located on the upper part of the paper cutting drum. It performs the final axial positioning before the tipping paper is cut, ensuring that the center of the tipping paper coincides with the cutting center. This ensures that after the double-length filter cigarette is cut by the filter cigarette cutting drum, the tipping paper lengths of the inner and outer cigarettes are equal.

[0004] When a cigarette brand needs to be changed, different widths of tipping paper are often required. This necessitates adjusting the inner and outer stops of the tipping paper guide device to ensure the paper strip's centerline coincides with the cutting center. This adjustment process requires disassembling the entire guide device and using calipers to adjust the axial positions of the inner and outer stops individually. The adjustment standard requires the distance between the inner and outer stops to equal the tipping paper width, and the centerline to coincide with the cutting center. In actual production, it has been found that this adjustment is time-consuming, and the adjustment accuracy varies from person to person. Often, repeated adjustments are required after initial testing, making it difficult to guarantee accuracy and resulting in significant downtime and material consumption. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a paper feeding guide device for a winding and splicing machine. This device can quickly change various fixed paper feeding specifications by means of a cam, while ensuring adjustment accuracy, improving labor efficiency, reducing labor intensity, and saving raw and auxiliary materials.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] In a first aspect, embodiments of the present invention provide a paper feeding guide device for a splicing machine, comprising a fixed shaft and an adjusting rod, wherein a first connecting block and a second connecting block are connected between the fixed shaft and the adjusting rod.

[0008] An inner cam and an outer cam are fixed on the adjusting rod section between the first connecting block and the second connecting block. The inner cam and the outer cam have similar structures and are spaced a certain distance apart. The inner cam and the outer cam are arranged opposite each other. An inner stop block is set between the inner cam and the first connecting block and is fitted onto the fixed shaft and the adjusting rod. An outer stop block is set between the outer cam and the second connecting block and is fitted onto the fixed shaft and the adjusting rod. An inner compression spring is set between the inner stop block and the first connecting block and is fitted onto the adjusting rod. An outer compression spring is set between the outer stop block and the second connecting block and is fitted onto the adjusting rod. A positioning mechanism is set on the adjusting rod to achieve positioning of the adjusting rod in the circumferential and axial directions.

[0009] As a further technical solution, multiple planes of different heights are machined on the working surfaces of the inner and outer cams.

[0010] As a further technical solution, the planes at different heights of the inner cam and the outer cam are connected by a smooth curve.

[0011] As a further technical solution, the working surfaces of the inner and outer cams are machined with three platforms of different heights, namely 7mm, 9mm and 10mm.

[0012] As a further technical solution, the positioning mechanism includes a positioning steel ball, a positioning spring, a cylindrical end set screw, and a first set screw. At the position where the adjusting rod mates with the first connecting block, the adjusting rod has a limiting groove, and the first connecting block has a first threaded hole. The cylindrical end set screw extends into the limiting groove of the adjusting rod through the first threaded hole. At the position where the adjusting rod mates with the second connecting block, multiple circular grooves are provided along its circumference. The second connecting block has a first threaded hole, and the positioning steel ball and positioning spring are press-fitted into the first threaded hole through the first set screw.

[0013] As a further technical solution, the number of circular grooves provided at the position where they mate with the second connecting block is equal to the number of working surfaces of the inner or outer cam.

[0014] As a further technical solution, a second threaded hole is also provided on the first connecting block and the second connecting block, and the second threaded hole is connected to the second set screw.

[0015] As a further technical solution, the inner and outer blocks can slide axially relative to the fixed shaft and the adjusting rod.

[0016] The beneficial effects of the above embodiments of the present invention are as follows:

[0017] This invention provides an innovative tipping paper guiding device for the PROTOS-M5 splicing machine. It incorporates a cam mechanism and an adjustment mechanism, utilizing two simple inner and outer cams to synchronously control the axial movement of the guide block, achieving rapid and accurate adjustment. This overcomes the previous cumbersome adjustment and precision issues associated with guide devices, enabling one-button switching of specifications and significantly improving work efficiency. The adjustment process has been transformed from requiring numerous tools to simple manual rotation, eliminating the need for any tools. When changing grades or specifications using this device, the distance between the tipping paper center and the machine's small side plate remains stable without adjustment, ensuring consistent product quality while improving efficiency and significantly reducing the consumption of raw materials. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0019] Figure 1 This is a perspective view of a paper feeding guide device for a PROTOS-M5 splicing unit disclosed in this invention;

[0020] Figure 2 This is a front view of a paper feeding guide device for a PROTOS-M5 splicing unit disclosed in this invention;

[0021] Figure 3(a) is Figure 2 Partial structural diagram;

[0022] Figure 3(b) is the AA cross-sectional view of Figure 3(a);

[0023] Figure 4(a) is Figure 2 Partial structural diagram;

[0024] Figure 4(b) is a sectional view of BB in Figure 4(a);

[0025] Figure 5 It is a three-dimensional view of the internal cam;

[0026] Figure 6 It is a three-dimensional view of the external cam;

[0027] Figure 7(a) is a three-dimensional view of the inner stop block;

[0028] Figure 7(b) is a three-dimensional view of the outer stop block;

[0029] Figure 8 It is a 3D view of the connecting blocks;

[0030] Figure 9 It is a 3D view of the adjusting rod;

[0031] In the diagram: 1. Fixed shaft 2. First connecting block 3. Inner pressure spring 4. Inner stop block 5. Adjusting rod 6. Outer stop block 7. Knob 8. Inner cam 9. Positioning steel ball 10. Positioning pressure spring 11. Set screw 12. Circular groove 13. Outer cam 14. Outer pressure spring 15. Second connecting block 16. Cylindrical end set screw Detailed Implementation

[0032] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] For ease of description, the words "up," "down," "left," and "right" appearing in this invention only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings themselves, and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] As described in the background section, existing technologies have shortcomings. To address these technical problems, this invention proposes a paper feeding guide device, comprising a support structure, a rotary positioning structure, and an adjustment structure. This novel device overcomes the cumbersome adjustment and precision issues inherent in traditional guide devices. It innovatively utilizes a cam mechanism to achieve one-click specification switching, significantly improving efficiency. Adjustment requires no tools, and the distance between the paper feeding center and the small wall plate remains stable even after changing grades, ensuring consistent product quality while improving efficiency.

[0036] In a typical embodiment of the present invention, such as Figure 1 As shown, the paper feeding guide device provided in this embodiment includes a support structure, a rotation positioning structure, and an adjustment structure;

[0037] The support structure includes a fixed shaft 1, a first connecting block 2, and a second connecting block 15. The fixed shaft 1 is matched with the drilled hole of the original equipment and is fixed by the original side set screw of the equipment, thus providing support. There is one first connecting block 2 and one second connecting block 15 at each of the inner and outer ends of the fixed shaft 1. The first connecting block 2 and the second connecting block 15 are each fixed to the fixed shaft 1 by set screw 11. A through hole is provided on each of the first connecting block 2 and the second connecting block 15. The adjusting rod 5 passes through the through holes on the two connecting blocks. The first connecting block 2 and the second connecting block 15 are used to support the rotatable adjusting rod 5, the inner stop block 4, the outer stop block 6, the inner compression spring 3, and the outer compression spring 14.

[0038] Furthermore, the rotary positioning structure includes an adjusting rod 5, a knob 7, a positioning spring 10, a positioning steel ball 9, a set screw 11, and a cylindrical end set screw 16; the adjusting rod 5 is supported on the first connecting block 2 and the second connecting block 15, and its shape is as follows. Figure 9 As shown, the outer end of the adjusting rod 5 is machined with a circular groove 12 that mates with the positioning steel ball 9. The circular groove 12 is divided into three equal parts in the circumferential direction. The inner end of the adjusting rod 5 has a limiting groove. The limiting groove mates with the cylindrical end set screw 16 to ensure that the adjusting rod 5 does not move axially during rotation. The knob 7 is fixed to the outer end of the adjusting rod 5 by a set screw and is used to manually rotate the adjusting rod 5. The positioning spring 10, the positioning steel ball 9, and the set screw 11, together with the circular groove 12 of the adjusting rod 5, determine the three positioning positions of the adjusting rod 5 during rotation.

[0039] The adjusting structure includes an inner cam 8, an outer cam 13, an inner stop block 4, an outer stop block 6, an inner compression spring 3, and an outer compression spring 14. The inner cam 8 and the outer cam 13 are welded to the adjusting rod 5, and there is a distance between the inner cam 8 and the outer cam 13. The adjusting rod 5 drives the inner cam 8 and the outer cam 13 to rotate together. Figure 5 , Figure 6 As shown, the inner cam 8 and the outer cam 13 have opposite curves and are machined with three working planes of different heights. The three working planes correspond circumferentially to the circular groove 12 of the adjusting rod 5 and correspond to three different paper widths. That is, the number of working planes on the inner cam 8 and the outer cam 13 is equal to the number of circular grooves 12, and a one-to-one correspondence is formed between them.

[0040] The inner stop block 4 and outer stop block 6 shown in Figures 7(a) and 7(b) have corresponding structures and are loosely fitted onto the fixed shaft 1. Both are machined with bosses, which cooperate with the inner cam 8 and outer cam 13. Under the action of the inner cam 8, outer cam 13, inner pressure spring 3, and outer pressure spring 14, they can move axially on the fixed shaft. Their inner surfaces contact the paper being attached, thus guiding the paper being attached. Specifically, the inner stop block 4 is installed between the inner cam 8 and the inner pressure spring 3. The inner pressure spring 3 is fitted onto the adjusting rod 5, with one end of the inner pressure spring 3 pressing against the side of the first connecting block 2 and the other end pressing against the side of the inner stop block 4. The inner stop block 4 can move axially along the adjusting rod 5. The outer stop block 6 is installed between the outer cam 13 and the outer pressure spring 14. The outer pressure spring 14 is fitted onto the adjusting rod 5, with one end of the outer pressure spring 14 pressing against the side of the second connecting block 15 and the other end pressing against the side of the outer stop block 6. The outer stop block 6 can move axially along the adjusting rod 5.

[0041] Furthermore, the diameter of the fixed shaft 1 matches the mounting hole of the original guide device of the equipment and is fixed by a set screw. The fixed position of the set screw is the plane of the inner end of the shaft, which ensures the stability of the circumferential position of the device and allows the initial axial setting to be achieved by loosening the set screw.

[0042] Furthermore, such as Figure 8 As shown, the first connecting block 2 and the second connecting block 15 are machined with two drilled holes, which are respectively matched with the diameters of the fixed shaft 1 and the adjusting rod 5, and two threaded holes are machined, which are respectively used for fixing the two connecting blocks and positioning the adjusting rod 5; wherein the first threaded hole of the first connecting block 2 is matched with the cylindrical end set screw 16, and the first threaded hole of the second connecting block 15 is matched with the positioning spring 10 and the set screw 11; in addition, the second threaded holes of the two connecting blocks are matched with the set screw 11.

[0043] Furthermore, such as Figure 2 As shown, the inner stop 4 and the outer stop 6 are loosely fitted on the fixed shaft 1, and move axially toward each other following the cam curve during adjustment;

[0044] Furthermore, such as Figure 5 , Figure 6 As shown, the inner cam 8 and outer cam 13 have three working planes machined on their working surfaces, with heights of 7mm, 9mm, and 10mm respectively. The working planes are connected by smooth curves to accommodate the required splicing paper widths of 60mm, 64mm, and 66mm, forming height differences of 2mm and 1mm.

[0045] Furthermore, the circular grooves of the adjusting rod 5 correspond to the centers of the three working surfaces of the cam.

[0046] Furthermore, the fixed shaft 1 mates with the drilled hole of the original equipment and is fixed by the original side set screw of the equipment, serving as a support; the two connecting blocks are fixed to the fixed shaft 1 by set screws; the adjusting rod 5 is supported on the connecting blocks, and two cams with opposite curves are machined in the middle. The cams are machined with three working planes of different heights, corresponding to three different paper widths; the outer end of the adjusting rod 5 is machined with a circular groove 12, which corresponds to the three planes of the cam in the circumferential direction and cooperates with the positioning steel ball 9 in the second connecting block 15 to complete the circumferential positioning; the inner stop 4 and the outer stop 6 are supported on the fixed shaft 1 and can slide along the axial direction of the fixed shaft 1. Each inner and outer stop has a boss machined on its inner side, which is in close contact with the cam under the action of the compression spring. The rotation of the cam can make the inner and outer stops move axially along the cam curve; the knob 7 is fixed to the outer end of the adjusting rod 5 by set screws.

[0047] The method of using the novel paper feeding guide device of this invention is as follows:

[0048] During initial installation of the guide device, the axial position of the fixed shaft 1 is adjusted by loosening the original fixing screw of the device, and the center distance from the wall panel is set. The installation is completed by rotating the knob according to the required specifications. When it is necessary to change the specifications, simply rotate the knob 7 manually to switch different cam surfaces. The inner cam 8 and outer cam 13, under the action of the inner pressure spring 3 and outer pressure spring 14, will push the inner stop block 4 and outer stop block 6 to move in opposite directions, thereby obtaining the spacing between the inner and outer stop blocks of different widths, while ensuring that the center line remains unchanged during the adjustment process.

[0049] When the knob 7 is manually rotated, the adjusting rod 5 pushes the positioning steel ball 9 to compress the positioning spring 10, disengaging it from its original fixed position. The cam follows the adjusting rod 5 as it rotates. Under the action of the inner spring 3, the inner stop block 4 moves axially along the curve of the inner cam 8. Under the action of the outer spring 14, the outer stop block 6 moves axially along the curve of the outer cam 13. When the desired size is reached, the positioning steel ball 9 enters the corresponding circular groove 12, and the position is stabilized by the pressure of the positioning spring 10.

[0050] Finally, it should be noted that relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A tipping paper guide for a tipping machine group, characterized in that The device includes a fixed shaft and an adjusting rod. The fixed shaft and the adjusting rod are connected by a first connecting block and a second connecting block. An inner cam and an outer cam are fixed on the adjusting rod section between the first connecting block and the second connecting block. The inner cam and the outer cam have similar structures and are spaced apart. The inner cam and the outer cam are arranged opposite each other. An inner stop block is provided between the inner cam and the first connecting block and is fitted onto the fixed shaft and the adjusting rod. An outer stop block is provided between the outer cam and the second connecting block and is fitted onto the fixed shaft and the adjusting rod. An inner compression spring is provided between the inner stop block and the first connecting block and is fitted onto the adjusting rod. An outer compression spring is provided between the outer stop block and the second connecting block and is fitted onto the adjusting rod. A positioning mechanism is provided on the adjusting rod to achieve positioning of the adjusting rod in the circumferential and axial directions. Multiple planes of different heights are machined on the working surfaces of the inner and outer cams; The positioning mechanism includes a positioning steel ball, a positioning spring, and a first set screw. At the position where the adjusting rod mates with the second connecting block, multiple circular grooves are provided along its circumference. A first threaded hole is provided in the second connecting block. The positioning steel ball and the positioning spring are press-fitted into the first threaded hole through the first set screw. The number of grooves set at the position where it mates with the second connecting block is equal to the number of working surfaces of the inner or outer cam.

2. The tipping paper guide of a tipping machine group as claimed in claim 1, characterized in that The inner and outer cams are connected by a smooth curve at different heights.

3. The tipping paper guide of a tipping machine group as claimed in claim 1, characterized in that, The inner and outer cams have three planes machined on their working surfaces at different heights, namely 7mm, 9mm, and 10mm.

4. The tipping paper guide of a tipping machine group as claimed in claim 1, characterized in that, The positioning mechanism further includes a cylindrical end set screw. At the position where the adjusting rod mates with the first connecting block, the adjusting rod is provided with a limiting groove, and the first connecting block is provided with a first threaded hole. The cylindrical end set screw penetrates into the limiting groove of the adjusting rod through the first threaded hole.

5. The tipping paper guide of a tipping machine group as claimed in claim 1, characterized in that, A second threaded hole is also provided on the first connecting block and the second connecting block, and the second threaded hole is connected to the second set screw.

6. The tipping paper guide of a tipping machine group as claimed in claim 1, characterized in that, The inner and outer stops can slide axially relative to the fixed shaft and the adjusting rod.

7. A cigarette making machine, characterized in that, Includes the paper feeding guide device of the winding and splicing unit as described in any one of claims 1-6.

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