Tipping paper limiting device of cigarette making machine

Abstract

The utility model discloses a tipping paper limiting device of a cigarette making machine. The tipping paper limiting device comprises a supporting shaft, a limiting block and a fixed check block. The supporting shaft is provided with a connecting piece and an open groove. The limiting blocks comprise two movable limiting blocks with the same structure, and the limiting surfaces of the limiting blocks comprise vertical surfaces and arc surfaces, so that the swinging of the tipping paper can be buffered. The fixed stop block is an annular plate and is provided with a connecting hole and an adjusting hole. During installation, the supporting shaft is fixed to a machine body and adjusted in direction, then the movable limiting block and the fixed check block are installed, the supporting shaft is rotated to enable the movable limiting block to be located on a tipping paper conveying track, the distance is the paper width, and the supporting shaft is fixed through the jackscrew. During working, tipping paper swings greatly to touch the arc-shaped surface of the movable limiting block and is buffered by the spring, and if the displacement of the movable limiting block exceeds a set value, the proximity switch on the fixed stop block can give out acousto-optic early warning. The device can effectively limit tipping paper, guarantee normal operation of the cigarette making machine and timely warn abnormity.

Description

Technical Field

[0001] The utility model relates to the field of cigarette manufacturing, in particular to a tipping paper limiting device for a cigarette making machine. Background Art

[0002] During the production process of cigarette making machines, tipping paper, as one of the important components of cigarettes, needs to be accurately and efficiently transported to the designated location for subsequent processing. The transportation of tipping paper in cigarette making machines mainly includes loading the tipping paper, conveying it with conveyor rollers, gluing it with the gluing wheel, and adsorption by the paper suction wheel, so as to ensure that it enters the next production link in a balanced and accurate manner.

[0003] In order to prevent the tipping paper from swinging too much during the transportation process, a limit groove is installed. However, in actual operation, when the tipping paper suddenly swings too much (for example, when the tipping paper is replaced or there is a defect in the tipping paper material itself), the edge of the tipping paper will be blocked by the edge of the limit groove and curled up, resulting in the appearance of the cigarette not meeting the process requirements, thereby causing appearance quality defects of the cigarette. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a tipping paper limiting device for cigarette making machines that can effectively avoid the back-rolling phenomenon. The device first performs a buffering operation through an arc-shaped limit surface, which is provided with a spring buffer structure to reduce the excessive direct obstruction of the limit block to the tipping paper. The specific technical solution is as follows:

[0005] A tipping paper limiting device for a cigarette making machine, comprising a supporting shaft, a limiting block and a fixed stopper;

[0006] The support shaft is a cylindrical structure with a connecting piece at one end, and two straight slots are formed on the cylindrical body of the support shaft;

[0007] The limit block includes a first movable limit block and a second movable limit block. The first movable limit block and the second movable limit block are limit blocks with the same structure and are provided with a mounting portion, a limit surface and a connecting surface. The limit surfaces of the first movable limit block and the second movable limit block are relatively mounted on the support shaft to limit the tipping paper. The limit surface includes a vertical surface perpendicular to the support shaft and an arc surface connected to the top of the vertical surface for buffering.

[0008] The fixed stopper is provided with an annular plate in the middle to allow the support shaft to pass through. The annular plate is provided with a connection hole for connecting with the limit block, and an adjustment hole for fastening the fixed stopper is also provided at any position on its outer circumferential arc surface.

[0009] Furthermore, the connecting member is a threaded column integrally provided at either end of the cylinder, which is mounted on the cigarette making machine via an adapter nut for mounting the support shaft at a desired angle.

[0010] Furthermore, the slots are arranged in an axisymmetric manner.

[0011] Furthermore, the mounting portion is provided with an arc-shaped groove adapted to the support shaft, and the groove edge of the arc-shaped groove is provided with a clamping piece that is slidably matched with the slot for mounting the limit block.

[0012] Furthermore, the connection surface is provided with a screw connected to the fixing block, and an elastic component is sleeved on the screw.

[0013] Furthermore, the vertical surface is 0.8-1.5 mm higher than the cylindrical apex of the support shaft.

[0014] Furthermore, the arc surface and the vertical surface are connected through an arc chamfer transition.

[0015] Furthermore, the proximity switch is electrically connected to the warning light and the horn.

[0016] The working principle of the utility model is: the support shaft is fixedly installed on the appropriate position of the machine body through a nut, and the direction of the support shaft is preliminarily adjusted so that the slot on the support shaft avoids the contact surface of the tipping paper, and then the movable limit block and the fixed limit block are assembled on the support shaft. During installation, it is necessary to ensure that the limit surfaces of the two movable limit blocks are facing the center of the support shaft, and then fine-tune them. By rotating the support shaft, the two movable limit blocks are adjusted to the tipping paper conveying track. The distance between the two movable limit blocks is the width of the tipping paper. After adjustment, the top screws are screwed into the adjustment holes of the left and right fixed blocks and fixed by the top screws.

[0017] When the tipping paper swings greatly, the edge of the tipping paper will pass over the vertical surface of the movable limit block and reach the curved surface with a buffering effect. The curved surface will not cause too much direct obstruction to the tipping paper. At this time, the edge of the tipping paper will exert a certain pressure on the movable limit block. The movable limit block under pressure is buffered by the spring. When the distance that the movable limit block moves toward the fixed block exceeds the set value, the proximity switch sends a signal and makes an audible and visual warning to remind the operator to track and observe in time.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The support shaft is designed to be cylindrical, which makes it easier for the tipping paper to stretch and straighten when it is transported on it, and not easy to curl back.

[0020] 2. There are two pairs of slots on the support shaft to facilitate the assembly and stability of the movable limit block.

[0021] 3. The movable limit block is provided with a vertical surface and an arc surface. The vertical surface is 1 mm higher than the top of the cylinder and transitions to a buffer arc surface through a circular chamfer. The vertical surface acts as a limit for the tipping paper. When the tipping paper swings greatly, it will cross the vertical surface and reach the buffer arc surface, avoiding the problem of easy curling.

[0022] 4. A screw with a spring is set between the movable limit block and the fixed block. When the kraft paper swings greatly and puts a large pressure on the movable limit block, it can play a buffering role; an adjusting nut is installed on the screw to adjust the position of the movable limit block accordingly.

[0023] 5. A proximity switch is installed on the fixed block. When the movable limit block exceeds the moving distance, a yellow warning is issued to remind the operator to conduct timely inspection and follow-up observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the utility model;

[0025] Figure 2 It is an exploded view of the utility model;

[0026] Figure 3 This is a diagram of the use state of the utility model;

[0027] Figure 4 This is a schematic diagram of the position limiting function of the present utility model;

[0028] Figure 5 This is a schematic diagram of the tipping paper of the present invention being limited to the left;

[0029] In the figure, 1-support shaft; 11-slot; 12-connecting piece; 2-limiting block; 21-first movable limiting block; 22-second movable limiting block; 3-installing portion; 31-arc groove; 32-clamping piece; 4-limiting surface; 41-vertical surface; 42-vertical surface; 5-connecting surface; 51-screw; 52-elastic component; 6-fixed stopper; 61-connecting hole; 62-adjusting hole; 63-round hole; 7-top screw. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0031] Example 1: A tipping paper limiting device for a cigarette making machine, comprising a support shaft 1 , a limiting block 2 mounted on the support shaft 1 through a slot 11 on the support shaft 1 , and a fixed stopper 6 for the movable limiting block 2 .

[0032] The support shaft 1 is a cylindrical structure, and two straight slots 11 are axially symmetrically provided on the cylinder of the support shaft 1. One end face of the support shaft 1 is integrally fixed with a connecting piece 12 for mounting the support shaft 1 on the cigarette making machine. The connecting piece 12 is a threaded column, which works together with the adapter nut to fix the support shaft 1 on the cigarette making machine.

[0033] The limit block 2 includes a first movable limit block 21 and a second movable limit block 22. The two movable limit blocks 2 (the first movable limit block 21 and the second movable limit block 22) both include an installation portion 3, a limit surface 4 and a connecting surface 5. The first movable limit block 21 is installed at the end of the near connecting member 12, and the second movable limit block 2 is installed at the end of the far connecting member 12. The limiting surfaces 4 of the first movable limit block 21 and the second movable limit are both facing the center of the support shaft 1, and are relatively installed on the support shaft 1 to limit the tipping paper.

[0034] The mounting portion 3 is provided with an arc-shaped groove 31 adapted to the support shaft 1 , and a clamping piece 32 is provided on the groove edge of the arc-shaped groove 31 for slidingly cooperating with the slot 11 for mounting the limit block 2 .

[0035] The limiting surface 4 includes a vertical surface 41 perpendicular to the support shaft 1 and an arc surface 42 connected to the top of the vertical surface 41 for buffering. After installation, the vertical surface 41 is 1 mm higher than the cylindrical apex of the support shaft 1 and transitions to a buffer arc surface 42 through an arc chamfer. The arc length of the arc surface 42 is 2 cm.

[0036] The connecting surface 5 is a surface facing away from the center of the supporting shaft 1 . A screw 51 for connecting with the fixed stopper 6 is provided on the connecting surface 5 . An elastic component 52 (spring) is sleeved on the screw 51 .

[0037] The fixed block 6 is an annular plate with a circular hole 63 in the middle that allows the support shaft 1 to pass through. The annular plate is provided with a connecting hole 61 for connecting to the screw 51 on the limit block 2. The connecting hole 61 is a smooth opening, and the connecting hole 61 slides with the screw 51. An adjustment hole 62 for tightening the fixed block 6 is also provided at any position on the outer arc surface of the fixed block 6. By screwing the top screw 7 into the adjustment holes 62 of the left and right fixed blocks 6, the fixed block 6 is fixedly installed on the support shaft 1 using the top screw 7 to fix the limit block 2. A proximity switch is also provided on the fixed block 6. The proximity switch is connected to the warning light and alarm horn signal. When the distance moved by the movable limit block 2 to the fixed block 6 exceeds the set value, the proximity switch sends a signal, and the warning light and alarm horn receive the signal to make an audible and visual warning, reminding the operator to track and observe in time.

[0038] Example 2: Specific steps for using a tipping paper limiting device for a cigarette making machine

[0039] 1. Device assembly

[0040] 1. Preparation for installation of support shaft 1

[0041] First, install the connecting piece 12 of the support shaft 1 in the appropriate position on the cigarette making machine body through the adapter nut. During the installation process, pay attention to adjust the direction of the support shaft 1 so that the two axially symmetrical slots 11 on the support shaft 1 avoid the contact surface of the tipping paper to prevent interference with the feeding of the tipping paper.

[0042] 2. Installation of limit block 2 and fixed block 6

[0043] The limiting block 2 includes a first movable limiting block 21 and a second movable limiting block 22 , which have the same structure and both have a mounting portion 3 , a limiting surface 4 and a connecting surface 5 . The arc groove 31 of the mounting part 3 is adapted to the support shaft 1, and the clip 32 at the edge of the groove slides with the slot 11 of the support shaft 1. During installation, first, the fixing plate of the first limit block 2 is passed through the circular hole 63 to the support shaft 1, and then the first movable limit plate connecting surface 5 is inserted into the support shaft 1 toward the fixed plate, and then the second limit plate and the fixed plate are inserted at once, and the two movable limit blocks 2 are installed on the support shaft 1, and the elastic component 52 is put on the screw rod 51 of the limit plate, and then the end of the screw rod 51 with the elastic component 52 (spring) is passed through the connecting hole 61 on the fixed stop block 6, and the nut and the screw 51 are connected to prevent the limit block 2 from being separated from the fixed stop block 6, and the width of the vertical surface 41 of the first movable limit block 21 and the second movable limit block 22 is adjusted to be consistent with the width of the kraft paper, and finally the top screw 7 is screwed into the adjusting hole 62 set on the outer peripheral arc surface of the fixed stop block 6, and the fixed stop block 6 is fastened to the support shaft 1 to complete the assembly of the device. At this time, the vertical surface 41 of the limiting surface 4 of the limiting plate is 1 mm higher than the cylindrical apex of the supporting shaft 1, which plays a limiting role on the tipping paper.

[0044] 2. Device debugging and operation

[0045] 1. Fine-tune positioning

[0046] After assembly is complete, fine-tuning is performed. By rotating the support shaft 1, the two movable limit blocks 2 are precisely adjusted to the conveying path of the tipping paper. Then, according to the width of the tipping paper, the compression degree of the elastic component on the screw 51 is fine-tuned by rotating the nut, so that the distance between the two movable limit blocks 2 is equal to the width of the tipping paper, ensuring effective positioning of the tipping paper.

[0047] 2. Operation monitoring

[0048] When the cigarette making machine is in operation and the tipping paper swings significantly, its edge will pass over the vertical surface 41 of the movable stopper 2 and reach the arc surface 42, which acts as a buffer. Due to the buffering design of the arc surface 42, it will not cause excessive direct obstruction to the tipping paper. At the same time, the pressure exerted by the tipping paper edge on the movable stopper 2 is cushioned by the spring, reducing damage to the tipping paper and the device.

[0049] When the distance that the movable limit block 2 moves toward the fixed block 6 exceeds the set value, the proximity switch installed on the fixed block 6 (connected to the warning light and horn electrical signal) will send a signal, the warning light will light up, and the horn will sound, making an audible and visual warning to remind the operator to track and observe in time so as to deal with the abnormal situation of the tipping paper in time and ensure the normal operation of the cigarette making machine.

[0050] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. A tipping paper limiting device for a cigarette making machine, characterized in that: The device comprises a supporting shaft (1), a limiting block (2) and a fixed stopper (6); The support shaft (1) is a cylindrical structure with a connecting piece (12) provided at one end, and two straight slots (11) are provided on the cylindrical body of the support shaft (1); The limiting block (2) comprises a first movable limiting block (21) and a second movable limiting block (22); the first movable limiting block (21) and the second movable limiting block (22) are limiting blocks (2) with the same structure, and are provided with a mounting portion (3), a limiting surface (4) and a connecting surface (5); the limiting surfaces (4) of the first movable limiting block (21) and the second movable limiting block are relatively mounted on the support shaft (1) for limiting the tipping paper; the limiting surface (4) comprises a vertical surface (41) perpendicular to the support shaft (1) and an arc surface (42) connected to the top of the vertical surface (41) for buffering; The fixed stopper (6) is an annular plate with a circular hole (63) in the middle for allowing the support shaft (1) to pass through. The annular plate is provided with a connecting hole (61) for connecting with the limit block (2). An adjustment hole (62) for fastening the fixed stopper (6) is also provided at any position on its outer circumferential arc surface.

2. The tipping paper limiting device for a cigarette making machine according to claim 1, characterized in that: The connecting member (12) is a threaded column integrally provided at either end of the cylinder, and is mounted on the cigarette making machine via an adapter nut for mounting the support shaft (1) at a desired angle.

3. The tipping paper limiting device for a cigarette making machine according to claim 1, characterized in that: The slots (11) are arranged in an axisymmetric manner.

4. The tipping paper limiting device for a cigarette making machine according to claim 1, characterized in that: The mounting portion (3) is provided with an arcuate groove (31) adapted to the support shaft (1), and a clamping piece (32) is provided on the groove edge of the arcuate groove (31) for slidingly matching with the slot (11) and for mounting the limit block (2).

5. The tipping paper limiting device for a cigarette making machine according to claim 1, characterized in that: The connecting surface (5) is provided with a screw rod (51) connected to the fixing block, and an elastic component (52) is sleeved on the screw rod (51).

6. The tipping paper limiting device for a cigarette making machine according to claim 1, characterized in that: The vertical surface (41) is 0.8-1.5 mm higher than the cylindrical apex of the support shaft (1).

7. The tipping paper limiting device for a cigarette making machine according to claim 1, characterized in that: The arc surface (42) is connected to the vertical surface (41) through an arc chamfer transition.

8. The tipping paper limiting device for a cigarette making machine according to claim 5, characterized in that: The elastic component (52) is a spring.

9. The tipping paper limiting device for a cigarette making machine according to claim 1, characterized in that: The fixed stopper (6) is provided with a proximity switch, which emits an audible and visual warning when the movable limiter (2) exceeds the moving distance.

10. The tipping paper limiting device for a cigarette making machine according to claim 9, characterized in that: The proximity switch is connected to the warning light and the horn electrical signal.

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