Tension adjusting and protecting device for cut tobacco suction belt

Abstract

The utility model provides a tension adjusting and protecting device for a cut tobacco suction belt. The tension adjusting and protecting device comprises a motor, a mounting base, a movable block and a tensioning wheel, the motor is provided with a power shaft, and the power shaft is connected with the movable block; the mounting base is provided with a guide rail, and the movable block is connected with the guide rail in a sliding fit manner; a positioning hole is formed in the mounting base, a mounting shaft perpendicular to the guide rail is arranged in the positioning hole, a limiting piece is movably connected to the mounting shaft and comprises a first supporting corner and a second supporting corner, the first supporting corner extends out relative to the positioning hole and can abut against the movable block, and the second supporting corner is located in the positioning hole. The inner wall of the positioning hole is provided with a touch pressure switch which can abut against the first supporting corner, and the touch pressure switch and the second supporting corner are located on the two sides of the first supporting corner respectively. By arranging the touch pressure switch and the limiting piece, the tobacco suction belt is prevented from being broken due to excessive stretching, and the safety in the tobacco processing process can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cigarette production technical field, concretely relates to a suction tape tension adjusting protection device. BACKGROUND

[0002] At present, in the equipment of the cigarette making and connecting machine, the suction tape is used to adsorb and convey the tobacco in the suction forming part of the VE feeding and banding machine, the suction tape is a tobacco conveying belt made of nylon material by warp and weft, and the tension of the suction tape is generally controlled by manually setting the air pressure parameter of the tension cylinder to ensure the tobacco conveying effect.

[0003] The patent document with the announcement number CN220320225U discloses a suction tape transmission device, the tensioning mechanism of the device includes a telescopic piece and a tensioning wheel arranged on the telescopic piece, a sliding groove is arranged on the telescopic piece, a sliding rod is slidably connected in the sliding groove, and the tensioning wheel is rotationally connected on the sliding rod; a pressure sensor is arranged in the sliding groove, and the detection end of the pressure sensor abuts against the end of the sliding rod. The above technical scheme controls the tension of the suction tape through the telescopic piece and the pressure sensor, so that the suction tape maintains good tobacco conveying effect, but as the running time of the suction tape increases, the suction tape will be worn and stretched, resulting in reduced physical strength of the suction tape and more likely to slip, at this time, the further tensioning of the suction tape by the tensioning mechanism cannot guarantee the good cooperation between the suction tape and the driving wheel, in addition, when the physical strength of the suction tape is reduced to a certain extent, the suction tape may be broken under the tension of the tensioning mechanism, causing the shutdown of the production workshop. UTILITY MODEL CONTENTS

[0004] In order to solve the above problems, the utility model provides a suction tape tension adjusting protection device, which can keep the suction tape tensioned and ensure the tobacco conveying effect, and can monitor the deformation of the suction tape and reduce the probability of breaking of the suction tape running beyond its service life.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A suction cable tension adjustment and protection device includes a motor, a mounting base, a movable block movably connected to the mounting base and driven by the motor, and a tensioning wheel connected to the movable block. The motor has a power shaft connected to the movable block. The mounting base has a guide rail extending in the same direction as the power shaft, and the movable block is slidably connected to the guide rail. The mounting base has a positioning hole in the direction of movement of the movable block, and a mounting shaft perpendicular to the guide rail is provided in the positioning hole. A limiting member is movably connected to the mounting shaft. The limiting member includes a first branch and a second branch set at an included angle. The first branch and the second branch are connected by a rounded transition portion, which is rotatably connected to the mounting shaft. The first branch extends relative to the positioning hole and can abut against the movable block. The second branch is located inside the positioning hole. A pressure switch is provided on the inner wall of the positioning hole that can abut against the first branch. The pressure switch and the second branch are located on opposite sides of the first branch.

[0007] This invention monitors the elongation of the suction cable by using a limiting component and a touch switch mounted on the mounting base. The suction cable gradually increases in length during use. Therefore, when the motor applies the same pulling or pressing force to the movable block, the movable block gradually moves in the direction of the motor's force. The limiting component is positioned in this direction of movement. When the movable block reaches the position of the limiting component, the movable block abuts against the first protruding corner of the limiting component extending from the positioning hole, pushing the limiting component to rotate relative to the mounting shaft until the first protruding corner contacts the touch switch on the inner wall of the positioning hole. Once activated, the touch switch sends a message to remind the operator to replace the suction cable. Furthermore, the first protruding corner restricts further movement of the movable block, preventing the suction cable from being further stretched and reducing the probability of breakage. When the first protruding corner is not in contact with the movable block, the first protruding corner moves away from the touch switch under the gravity of the second protruding corner, preventing accidental activation.

[0008] Furthermore, the mounting base includes a base plate and mounting members that protrude relative to the base plate at both ends of the base plate. The mounting members are provided with mounting holes, and the end of the guide rail is fixedly connected to the mounting members through the mounting holes. The movable block is provided with mating holes, and the guide rail passes through the mating holes.

[0009] Furthermore, the mounting component includes a fixing part parallel to the substrate and fixedly connected to the substrate, and a mounting part perpendicularly connected to the fixing part, wherein the mounting hole is provided in the mounting part.

[0010] Furthermore, the mounting base includes two parallel guide rails.

[0011] Furthermore, the fixing part has a long strip structure and its length direction is perpendicular to the guide rail, and each fixing part is connected to two mounting parts.

[0012] Further, the end of the first branch of the limiting piece is provided with a first magnetic attraction element, the lower part of the positioning hole is provided with a second magnetic attraction element corresponding to the position of the first magnetic attraction element, and the first magnetic attraction element and the second magnetic attraction element are magnetically connected. By arranging the first magnetic attraction element and the second magnetic attraction element, the first branch and the touch switch are kept in a separated state when the movable block does not reach the positioning hole, so that the situation of false triggering of the alarm is avoided.

[0013] Further, the power shaft and the movable block are provided with a tension sensor, the movable block comprises a base and a connecting part provided at one end of the base, the connecting part is vertically protruded relative to the base, the connecting part is connected with the tension sensor, and the rotating shaft of the tensioning wheel is vertically connected with the base.

[0014] Further, the tension sensor and the end of the power shaft are further provided with a shaft coupling seat.

[0015] Further, the two end edges of the tensioning wheel are provided with a blocking ring.

[0016] In summary, the application of the application can achieve the following beneficial effects:

[0017] 1. The limiting piece arranged on the mounting base and the touch switch are used for monitoring the elongation of the suction tape, when the first branch of the limiting piece abuts against the movable block, the first branch abuts against the touch switch arranged on the inner wall of the positioning hole, and then information is sent to remind the staff to replace the suction tape, and the production safety is ensured.

[0018] 2. After the limiting piece and the movable block abut against each other, the further movement of the movable block is limited, the suction tape is prevented from being further elongated, the probability of the suction tape being elongated and broken is reduced, and the situation that the components collide with each other after the suction tape is broken is avoided.

[0019] 3. In some embodiments of the application, the first magnetic attraction element and the second magnetic attraction element are arranged, the first magnetic attraction element and the second magnetic attraction element can ensure that the first branch and the touch switch are in a separated state when the movable block does not reach the positioning hole, and the situation of false triggering of the alarm is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view of the suction tape tension adjusting device in the embodiment;

[0021] Figure 2 It is a structure schematic view of the mounting base and the movable block;

[0022] Figure 3 It is a partial sectional view of the mounting base;

[0023] In the diagram, 1-motor, 11-power shaft, 2-moving block, 21-base, 22-connecting part, 3-tensioning wheel, 31-retaining ring, 4-mounting base, 41-base plate, 42-mounting component, 421-fixing part, 422-mounting part, 423-mounting hole, 43-guide rail, 44-positioning hole, 441-mounting shaft, 442-touch switch, 443-second magnetic suction component, 45-limiting component, 451-first support corner, 452-second support corner, 453-rounded transition part, 454-first magnetic suction component, 5-tension sensor, 6-coupling seat. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model. Example

[0025] Reference Figure 1 and Figure 2 This embodiment provides a suction ribbon tension adjustment and protection device, which includes a motor 1, a movable block 2, a tensioning wheel 3, and a mounting base 4. The movable block is movably connected to the mounting base, and the axle of the tensioning wheel is fixedly connected to the movable block. A suction ribbon is sleeved on the tensioning wheel, and the two ends of the tensioning wheel form retaining rings 31 for preventing the suction ribbon from deviating. The motor can drive the movable block to move linearly on the mounting base, thereby driving the tensioning wheel connected to the movable block to move, so that the suction ribbon connected to the tensioning wheel generates sufficient tension to ensure the suction ribbon's conveying effect on the tobacco.

[0026] More specifically:

[0027] The motor 1 has a power shaft 11. In this embodiment, the power shaft is driven by a cylinder and can extend and retract along its own axis, thereby driving the movable block connected to the power shaft to move linearly. The end of the power shaft is connected to a tension sensor 5 through a coupling seat. The tension sensor is used to sense the magnitude of the tension generated between the power shaft and the movable block. In other embodiments, the motor can also drive the power shaft hydraulically, or the power shaft can be a lead screw structure with a fitting block sleeved on the outside of the lead screw. When the lead screw rotates, it can drive the fitting block to move linearly along the lead screw, thereby driving the movable block to move linearly through the fitting block. In this embodiment, the power shaft keeps the suction ribbon taut by pulling, so a tension sensor is used. In other embodiments, the power shaft can also keep the suction ribbon taut by applying pressure, in which case the tension sensor can be equivalently replaced by a pressure sensor.

[0028] The mounting base 4 includes a base plate 41 and two mounting members 42 respectively disposed near both ends of the base plate. Each mounting member includes a fixing part 421 connected to the plane of the base plate. The fixing part and the base plate can be detachably fixedly connected by screws. The fixing part is vertically connected to the mounting part 422. The mounting part has a mounting hole 423 in the middle. Each mounting member includes two mounting parts. A guide rail 43 with the same extension direction as the power shaft 11 is disposed between the mounting parts located at both ends of the base plate. The guide rail is a smooth rod structure. The two ends of the guide rail are fixedly connected to the mounting parts through the mounting holes. The two guide rails are parallel to each other. In the direction of movement of the movable block 2, a positioning hole 44 is disposed on the base plate. A mounting shaft 441 perpendicular to the guide rail is disposed in the positioning hole. A touch switch is disposed on one inner wall of the positioning hole. 442, a limiting member 45 is movably connected on the mounting shaft. The limiting member includes a first branch 451 and a second branch 452 arranged at an acute angle, and a rounded transition portion 453 that transitions between the first branch and the second branch. The second branch and the touch switch are located on both sides of the first branch, so that in a natural state, the second branch can separate the first branch from the touch switch by gravity. The first branch extends relative to the positioning hole and can abut against the movable block 2. The second branch is located inside the positioning hole. In a further embodiment, a first magnetic suction member 454 is provided at the end of the second branch, and a second magnetic suction member 443 corresponding to the position of the first magnetic suction member is provided at the lower part of the positioning hole. The first magnetic suction member and the second magnetic suction member can be magnetically connected to ensure that the first branch is separated from the touch switch in a natural state.

[0029] The movable block 2 includes a slidably overlapping base 21 of the substrate 41 and a connecting part 22 disposed at one end of the base. The tension sensor 5 is connected to the connecting part 22. The guide rail 43 passes through the base, allowing the movable block 2 to move and slide along the extension direction of the guide rail 43. The two parallel guide rails ensure the stability of the sliding process. When the end of the movable block moves to the position of the positioning hole 44, the end of the movable block abuts against the first support angle 451 and causes the limiting member 45 to rotate until the first support angle 451 abuts against the touch switch 442 on the inner wall of the positioning hole 44, thereby triggering the touch switch.

[0030] This invention controls the stretching length of the suction ribbon through a touch switch 442 and a limiting member 45. During use, the suction ribbon gradually increases in length. Therefore, when the motor 1 applies the same pulling or pressing force to the movable block 2, the position of the movable block gradually moves in the direction of the motor's force application. The limiting member is positioned in this direction of movement. When the movable block moves to the position of the limiting member, the movable block abuts against the first protruding corner of the limiting member extending from the positioning hole, pushing the limiting member to rotate relative to the mounting shaft until the first protruding corner contacts the touch switch on the inner wall of the positioning hole. Once activated, the touch switch sends a message to remind the operator to replace the suction ribbon. Furthermore, the first protruding corner restricts further movement of the movable block, preventing the suction ribbon from being further stretched and reducing the probability of breakage. When the first protruding corner is not in contact with the movable block, under the influence of the gravity of the second protruding corner and the magnetic attraction between the first and second magnetic components, the first protruding corner will move away from the touch switch, preventing accidental activation.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A suction ribbon tension adjustment and protection device, characterized in that: The device includes a motor, a mounting base, a movable block movably connected to the mounting base and driven by the motor, and a tensioning wheel connected to the movable block. The motor has a drive shaft connected to the movable block. The mounting base has a guide rail extending in the same direction as the drive shaft, and the movable block is slidably connected to the guide rail. The mounting base has a positioning hole located in the direction of movement of the movable block. A mounting shaft perpendicular to the guide rail is provided in the positioning hole. A limiting member is movably connected to the mounting shaft. The limiting member includes a first and a second branch angled at an angle. The first and second branch angles are connected by a rounded transition portion, which is rotatably connected to the mounting shaft. The first branch angle extends relative to the positioning hole and can abut against the movable block. The second branch angle is located inside the positioning hole. A pressure switch is provided on the inner wall of the positioning hole, which can abut against the first branch angle. The pressure switch and the second branch angle are located on opposite sides of the first branch angle.

2. The suction ribbon tension adjustment and protection device according to claim 1, characterized in that: The mounting base includes a base plate and mounting members that protrude from the base plate at both ends. The mounting members are provided with mounting holes, and the end of the guide rail is fixedly connected to the mounting member through the mounting holes. The movable block is provided with mating holes, and the guide rail passes through the mating holes.

3. The suction ribbon tension adjustment and protection device according to claim 2, characterized in that: The mounting component includes a fixing part that is parallel to and fixedly connected to the substrate and a mounting part that is perpendicularly connected to the fixing part, and the mounting hole is provided in the mounting part.

4. The suction ribbon tension adjustment and protection device according to claim 3, characterized in that: The mounting base includes two parallel guide rails.

5. The suction ribbon tension adjustment and protection device according to claim 4, characterized in that: The fixing part has a long strip structure and its length direction is perpendicular to the guide rail. Each fixing part is connected to two mounting parts.

6. The suction ribbon tension adjustment and protection device according to claim 1, characterized in that: The second corner is provided with a first magnetic attractor at its end, and the lower part of the positioning hole is provided with a second magnetic attractor corresponding to the position of the first magnetic attractor. The first magnetic attractor and the second magnetic attractor can be magnetically connected.

7. The suction ribbon tension adjustment and protection device according to claim 1, characterized in that: A tension sensor is provided between the power shaft and the movable block. The movable block includes a base and a connecting part located at one end of the base. The connecting part protrudes vertically relative to the base and is connected to the tension sensor. The shaft of the tension wheel is vertically connected to the base.

8. The suction ribbon tension adjustment and protection device according to claim 7, characterized in that: A coupling seat is also provided between the tension sensor and the end of the power shaft.

9. The suction ribbon tension adjustment and protection device according to claim 1, characterized in that: The tensioning wheel has retaining rings at both ends.

Images