A rolling cutter tobacco cutter blade pushing mechanism

Abstract

The utility model relates to tobacco machinery technical field, concretely refers to a kind of rotary cutter tobacco shredding machine blade push-knife mechanism, including tool holder, detachable installation is limited cover on tool holder, knife rest and the limited cover between be equipped with the tool that can move up and down, the surface of the tool holder is equipped with limit sliding slot along tool entering direction, limit sliding slot is hinged with rotary slide block, one side of limit sliding slot is equipped with drive sliding slot, sliding connection has driving block in drive sliding slot, driving block is close to rotary slide block one end and rotary slide block contact, rotary slide block is close to limit sliding slot opening one end and is rotatably connected with push-knife block.The utility model of a kind of rotary cutter tobacco shredding machine blade push-knife mechanism, can make blade along preset circular arc trajectory steady tool entering, realize tool wear homogenization, push-knife angle automatic accurate control, vibration resistance performance promotion and the comprehensive effect of maintenance facilitation.

Description

Technical Field

[0001] This utility model relates to the field of tobacco machinery technology, specifically to a blade pusher mechanism for a rotary tobacco shredder. Background Technology

[0002] In the tobacco processing industry, the rotary cutter is a key piece of equipment for cutting tobacco leaves into shreds, and the performance of its blade feeding mechanism directly affects the cutting quality and efficiency. Traditional rotary cutter blade feeding mechanisms mostly use screw-driven or hydraulic direct-push methods, which have the following drawbacks:

[0003] 1. Uneven blade wear: The blade is prone to deviation during the feeding process, which leads to increased wear on one side and shortens the blade life;

[0004] 2. Low adjustment accuracy: The blade position adjustment relies on repeated manual calibration, which is time-consuming and makes it difficult to guarantee the accuracy of the feed angle;

[0005] 3. Poor structural stability: The drive component is susceptible to vibration, which can cause the pusher trajectory to deviate, affecting the uniformity of the shred thickness.

[0006] 4. High maintenance costs: The complex transmission structure requires frequent lubrication and parts replacement, increasing downtime.

[0007] While existing technologies include improved blade pusher mechanisms using sliders, these mechanisms often experience jamming due to concentrated force and lack effective limits on the blade's oscillation radius, failing to address the issues of smoothness and angle control during blade advancement. Therefore, there is an urgent need for a blade pusher mechanism that achieves precise guidance, balanced force distribution, and ease of maintenance. Utility Model Content

[0008] To solve the above problems, this utility model provides a rotary tobacco shredder blade pusher mechanism, which enables the blade to feed smoothly along a preset arc trajectory, achieving a comprehensive effect of uniform blade wear, automatic and precise control of the pusher angle, improved vibration resistance, and convenient maintenance.

[0009] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a blade pusher mechanism for a rotary tobacco shredder, including a blade holder, a limit cover plate detachably installed on the blade holder, a blade that can move up and down between the blade holder and the limit cover plate, a limit groove is provided on the surface of the blade holder along the blade's cutting direction, a rotary slider is hinged in the limit groove, a drive groove is provided on one side of the limit groove, a drive block is slidably connected in the drive groove, the end of the drive block near the rotary slider is in contact with the rotary slider, and a pusher block is rotatably connected to the end of the rotary slider near the opening of the limit groove.

[0010] As an improvement, the rotary slider is provided with a sliding shaft at one end near the opening of the limiting slide groove, and the cutter is provided with two arc-shaped limiting grooves that cooperate with the sliding shaft.

[0011] As an improvement, the arc-shaped limiting groove is centered on the hinge axis of the rotary slider and the limiting groove.

[0012] As an improvement, the drive groove is a dovetail groove.

[0013] As an improvement, the two drive blocks are provided with positioning rods that penetrate the limiting cover plate. The limiting cover plate is provided with grooves for the positioning rods to move left and right. The two positioning rods are fixedly mounted with racks. The racks can move left and right on the outside of the limiting cover plate. A drive gear is meshed on the racks. The drive gear is powered by a motor to rotate.

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] 1. By using the hinged design of the rotary slider and the limiting groove, combined with the arc-shaped limiting groove and sliding shaft structure on the tool, the tool is forced to make a precise arc motion with the hinge axis as the center, ensuring that the blade is subjected to uniform force during the push-out process, eliminating the problem of unilateral wear caused by the skewness of the traditional mechanism, and significantly improving the service life of the blade.

[0016] 2. The drive slide adopts a dovetail groove design, combined with the symmetrical arrangement of the two drive blocks, so that the rotating slider is subjected to balanced force, effectively suppressing the deviation of the pusher trajectory caused by vibration, ensuring a smooth and reliable pusher process, and improving the uniformity of the shredding quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the blade pusher mechanism of a rotary tobacco shredder according to the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of the blade pusher mechanism of a rotary tobacco shredder according to this utility model.

[0019] Figure 3 This is an exploded view of the internal structure of the blade pusher mechanism of a rotary tobacco shredder according to this utility model.

[0020] As shown in the figure: 1. Tool holder; 11. Limiting slide groove; 12. Drive slide groove; 13. Drive block; 14. Rotary slider; 16. Positioning rod; 17. Pusher block; 18. Slide shaft; 2. Limiting cover plate; 3. Tool; 31. Arc-shaped limiting groove; 4. Rack; 5. Drive gear. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] Combined with appendix Figure 1-3 :

[0023] A rotary tobacco shredder blade pusher mechanism includes a blade holder 1, a detachable limit cover 2 on the blade holder 1, and a vertically movable blade 3 between the blade holder 1 and the limit cover 2. A limit groove 11 is provided on the surface of the blade holder 1 along the cutting direction of the blade 3. A rotary slider 14 is hinged within the limit groove 11. A drive groove 12 is provided on one side of the limit groove 11, and a drive block 13 is slidably connected within the drive groove 12. The drive groove 12 is a dovetail groove. The drive block 13 contacts the rotary slider 14 at one end, and a pusher block 17 is rotatably connected to the end of the rotary slider 14 near the opening of the limit groove 11.

[0024] With this structure, when the drive block 13 moves horizontally within the drive slide 12, it pushes the rotary slider 14 to rotate around the hinge point of the limit slide 11, thereby driving the pusher block 17 to move along an arc trajectory, so that the tool 3 can achieve a smooth arc-shaped cutting action between the limit cover plate 2 and the tool holder 1, avoiding the skew wear problem of traditional pusher mechanisms.

[0025] Combined with appendix Figure 1-3 :

[0026] The rotary slider 14 is provided with a sliding shaft 18 at one end near the opening of the limiting slide groove 11. The cutter 3 is provided with two arc-shaped limiting grooves 31 that cooperate with the sliding shaft 18. The arc-shaped limiting grooves 31 are centered on the hinge axis of the rotary slider 14 and the limiting slide groove 11.

[0027] With this structure, the sliding shaft 18 is embedded in the arc-shaped limiting groove 31 of the tool 3. When the rotary slider 14 rotates, the sliding shaft 18 rolls along the arc-shaped limiting groove 31, forcing the tool 3 to make a precise arc motion with the hinge axis of the rotary slider 14 as the center, ensuring that the cutting angle of the blade is constant and the force is uniform, and eliminating one-sided wear.

[0028] Combined with appendix Figure 1-3 :

[0029] The two drive blocks 13 are provided with positioning rods 16 that penetrate the limiting cover plate 2. The limiting cover plate 2 is provided with grooves for the positioning rods 16 to move left and right. The two positioning rods 16 are fixedly installed with racks 4. The racks 4 can move left and right on the outside of the limiting cover plate 2. The racks 4 are meshed with drive gears 5, which are powered by a motor to rotate.

[0030] With this structure: the motor drives the gear 5 to rotate, which drives the rack 4 to move horizontally, and the positioning rod 16 simultaneously pushes the two drive blocks 13 to slide in the drive groove 12. The double drive block design makes the rotary slider 14 symmetrically stressed, avoiding jamming. At the same time, the removable limit cover 2 facilitates the maintenance of the positioning rod 16 and the rack 4.

[0031] In a specific implementation of this utility model, the motor drives the drive gear 5 to rotate, which in turn drives the rack 4 meshing with it to move horizontally along the outer side of the limiting cover plate 2.

[0032] The rack 4 pushes the two drive blocks 13 to slide in the dovetail groove type drive slide 12 simultaneously through the positioning rods 16 fixed at both ends. When the drive block 13 moves horizontally, it pushes the rotary slider 14 to rotate around its hinge axis with the limiting slide 11. The pusher block 17 at the end of the rotary slider 14 drives the slide shaft 18 to move. The slide shaft 18 is embedded in the arc-shaped limiting groove 31 of the tool 3, forcing the tool 3 to move in an arc trajectory with the hinge axis as the center.

[0033] The motor can monitor the displacement of rack 4 in real time through a sensor. The sensor is existing technology, so it will not be described in detail here. Combined with the preset feed angle parameters, the speed of drive gear 5 is dynamically adjusted to ensure that the arc feed trajectory of tool 3 is accurate and controllable.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A blade pusher mechanism for a rotary tobacco shredder, comprising a blade holder (1), a limiting cover plate (2) detachably mounted on the blade holder (1), and a vertically movable blade (3) disposed between the blade holder (1) and the limiting cover plate (2), characterized in that: The surface of the tool holder (1) is provided with a limiting slide groove (11) along the cutting direction of the tool (3). A rotary slider (14) is hinged in the limiting slide groove (11). A driving slide groove (12) is provided on one side of the limiting slide groove (11). A driving block (13) is slidably connected in the driving slide groove (12). The end of the driving block (13) near the rotary slider (14) is in contact with the rotary slider (14). A pusher block (17) is rotatably connected to the end of the rotary slider (14) near the opening of the limiting slide groove (11).

2. The blade pusher mechanism of a rotary tobacco shredder according to claim 1, characterized in that: The rotary slider (14) has a sliding shaft (18) at one end near the opening of the limiting slide groove (11), and the cutter (3) has two arc-shaped limiting grooves (31) that cooperate with the sliding shaft (18).

3. The blade pusher mechanism of a rotary tobacco shredder according to claim 2, characterized in that: The arc-shaped limiting groove (31) is centered on the hinge axis of the rotating slider (14) and the limiting groove (11).

4. The blade pusher mechanism of a rotary tobacco shredder according to claim 1, characterized in that: The drive groove (12) is a dovetail groove.

5. The blade pusher mechanism of a rotary tobacco shredder according to claim 1, characterized in that: The two drive blocks (13) are provided with positioning rods (16) that pass through the limiting cover plate (2). The limiting cover plate (2) is provided with grooves for the positioning rods (16) to move left and right. The two positioning rods (16) are fixedly installed with racks (4). The racks (4) can move left and right on the outside of the limiting cover plate (2). The racks (4) are meshed with drive gears (5). The drive gears (5) are powered by a motor to rotate.

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