Cutter correcting device for tobacco cutter

Abstract

The utility model belongs to the technical field of tobacco cutters, and particularly relates to a cutter correcting device for a tobacco cutter, which comprises a machine body and a cutter roll, the cutter roll is rotatably mounted in the machine body, a cutter correcting mechanism is arranged on the surface of the machine body, and the cutter correcting mechanism comprises a cutter setting component and a supporting and fixing component. The tool setting assembly comprises a center lead screw, a middle nut and a locking nut. According to the cutter correcting device for the tobacco cutter, the cutter correcting mechanism is arranged, so that the problems that an SQ36A tobacco cutter is long in cutter changing time, and cutter adjusting is difficult after cutter changing are solved. When the tool is used for adjusting the cutter, the consistency of the extension length of each blade can be obviously improved, the time required for sharpening the cutter after the cutter is replaced is shortened, the working efficiency is improved, the working difficulty of a shredding worker is reduced, and the tool has high practicability and generalization performance, can be popularized to various rotating devices needing to proofreading the scraper and the blade, and is suitable for popularization and application. And the maintenance and debugging efficiency of each silk making device is further improved.

Description

Technical Field

[0001] This utility model relates to the field of shredder technology, specifically to a blade calibration device for a shredder. Background Technology

[0002] A tobacco shredder is a device used to cut tobacco leaves or stems into thin shreds of a certain width. Depending on the industry, this equipment can be categorized into vegetable shredders, tobacco shredders, etc. The main structure of a tobacco shredder includes a hopper, a cutting device, a transmission device, and a power supply. Its working principle is as follows: tobacco raw materials are poured into the hopper and fall onto a conveyor belt under gravity. The conveyor belt transports the tobacco raw materials to the cutting device. The cutting device consists of a pair of opposing rotating blades that cut the tobacco raw materials into thin shreds, which are then transported to the designated location by the conveyor belt.

[0003] The SD5 shredder uses a single-point blade alignment system, where the alignment device makes point contact with the blade, resulting in a simple and lightweight device. The drawback is that the fixed-position single-point alignment makes it impossible to check whether the left and right blades extend symmetrically.

[0004] The SQ211D employs a two-point tool setting scheme, with the tool setter and the cutting edge making line contact, resulting in a robust and reliable device. However, considering the limited installation space of the SQ36A and the lack of a fixed installation location, the tool setter needs to be calibrated after each disassembly and assembly, making its structural design less convenient for repeated calibration.

[0005] The SQ36A shredder is a curved-blade horizontal roller shredder. The inclined blades, after being ground by the grinding wheel during rotation, exhibit an elliptical curve characteristic. When replacing a new blade, first retract the grinding wheel appropriately, remove the pressure plate, remove the blade and push-blade half-nut, clean and lubricate them, then place the push-blade half-nut at the bottom and install the blade and pressure plate in sequence. Insert a special blade wiggle device into each blade feed shaft to wiggle the blade. After determining that the blade extension length is appropriate, rotate the blade roller to check for collision between the blade edge and the blade gate. After replacing the blade, the gap between each blade edge and the blade gate can be measured individually using the sticker method, but this method is time-consuming and labor-intensive.

[0006] Currently, there is no suitable or dedicated tooling for calibrating the blade extension length of the SQ36A shredder. Repair personnel can only roughly judge the blade extension length based on experience. The inclined and curved surfaces of the pressure plate and guide strip are also not suitable for the use of various measuring tools. Shredder operators eliminate the error in the extension length between blades by sharpening the blades for a long time. The unsharpened blade is a straight line, which is different from the elliptical curve characteristic after sharpening. Therefore, it is difficult to judge by visual inspection. New employees often over-shake the blade when changing blades, resulting in disassembly and reassembly, and it is impossible to guarantee that the blade extension length is consistent.

[0007] After on-site measurement and analysis of the difficulty of modification, it was decided to combine the advantages of the above equipment and redesign the SQ36A shredder. Based on this, the blade calibrator was designed to be detachable and adopt a two-point calibrating method to simultaneously calibrate the left and right extension lengths of the blade. Utility Model Content

[0008] The purpose of this invention is to provide a blade alignment device for a shredder to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a knife-calibrating device for a shredder, comprising a machine body and a knife roller, wherein the knife roller is rotatably installed inside the machine body, and a knife-calibrating mechanism is provided on the surface of the machine body, wherein the knife-calibrating mechanism comprises a knife-setting component and a support and fixing component.

[0010] The tool setting assembly includes a central lead screw, an intermediate nut, and a locking nut. The central lead screw is located in front of the tool roller, the intermediate nut is attached to the outer surface of the central lead screw, and the locking nut is attached to the outer surface of the lower end of the intermediate nut.

[0011] Preferably, the surface of the intermediate nut is provided with an arc-shaped groove, and a locking screw is attached inside the arc-shaped groove to prevent the locking screw from being over-tightened, damaging the central lead screw, and reducing the structural strength.

[0012] Preferably, the center lead screw uses an M fine thread pair for feed adjustment with a pitch of 0.5mm. The top of the center lead screw has a spherical end face to ensure point contact effect, making it easy for the cutting edge to pass through and avoiding damage to the cutting edge.

[0013] Preferably, the intermediate nut is made of self-lubricating brass to ensure smooth rotation of the central lead screw.

[0014] Preferably, the support and fixing assembly includes a support plate, screw holes, and fixing bolts. The support plate has screw holes on its surface, and the fixing bolts pass through the screw holes and connect to the surface of the machine body. A central lead screw is installed on the surface of the support plate. The central lead screws are symmetrically distributed on the surface of the support plate and adopt a two-point blade calibration method to simultaneously calibrate the left and right extension lengths of the blade.

[0015] Preferably, the support plate is made of 201 stainless steel angle steel, which has certain acid and alkali resistance, high density, and is free of bubbles and pinholes after polishing. The specifications are 30mm*30mm, the plate thickness is 3mm, and the total length is 800mm.

[0016] Preferably, a grinding wheel is movably mounted on the surface of the cutter roller, a blade is fixedly mounted on the surface of the cutter roller, a pressure plate is fixedly mounted on the surface of the blade, and a pusher half nut is fixedly mounted on the surface of the pressure plate.

[0017] Preferably, the machine body is an SQ36A type stalk cutter with 8 blades and the diameter of the cutter roller is 600mm.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. The blade calibration device used in this shredder solves the problems of long blade change time and difficult blade adjustment after blade change in the SQ36A shredder by setting up a blade calibration mechanism. Using this fixture for blade adjustment can significantly improve the consistency of the extension length of each blade, shorten the time required for sharpening after blade change, improve work efficiency, and reduce the work difficulty for shredder operators. It has high practicality and applicability and can be extended to various rotating devices that require calibration of scrapers and blades, further improving the maintenance and debugging efficiency of various shredding equipment.

[0020] 2. The blade alignment device used in this shredder improves the disassembly efficiency of the device by setting up support and fixing components, with the support plate connected by fixing bolts. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the tool setting assembly structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the support and fixing components of this utility model;

[0024] Figure 4 This is a top view of the structure of this utility model.

[0025] In the diagram: 101, machine body; 102, cutter roller; 201, grinding wheel; 202, pressure plate; 203, blade; 204, pusher half nut; 301, support plate; 302, screw hole; 303, fixing bolt; 401, center lead screw; 402, locking screw; 403, intermediate nut; 404, locking nut; 405, arc groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-4 This utility model provides a technical solution:

[0028] Example 1: A blade calibration device for a shredder includes a body 101 and a blade roller 102. The blade roller 102 is rotatably installed inside the body 101. The diameter of the blade roller 102 is 600mm. The body 101 is an SQ36A type shredder. The number of blades 203 is 8. A blade calibration mechanism is provided on the surface of the body 101. The blade calibration mechanism includes a blade setting component and a support and fixing component.

[0029] The tool setting assembly includes a central lead screw 401, an intermediate nut 403, and a locking nut 404. The central lead screw 401 is located in front of the tool roller 102. The central lead screw 401 uses an M4 fine thread pair for feed adjustment with a pitch of 0.5mm. The top of the central lead screw 401 has a spherical end face to ensure point contact and facilitate the cutting edge to pass over the blade, avoiding damage to the blade. The intermediate nut 403 is fastened to the outer surface of the central lead screw 401. The intermediate nut 403 is made of self-lubricating brass to ensure smooth rotation of the central lead screw 401. The surface of the intermediate nut 403 has an arc-shaped groove 405, and a locking screw 402 is fastened inside the arc-shaped groove 405 to prevent the locking screw 402 from being over-tightened, damaging the central lead screw 401, and reducing the structural strength. The locking nut 404 is fastened to the lower outer surface of the intermediate nut 403.

[0030] Example 2: Based on Example 1, the support and fixing components include a support plate 301, screw holes 302, and fixing bolts 303. The support plate 301 has screw holes 302 on its surface, and the fixing bolts 303 pass through the screw holes 302 and connect to the surface of the machine body 101. A central lead screw 401 is installed on the surface of the support plate 301. The central lead screw 401 is symmetrically distributed on the surface of the support plate 301. A two-point blade calibration method is adopted to simultaneously calibrate the left and right extension lengths of the blade 203. The support plate 301 is made of 201 stainless steel angle steel, which has certain acid and alkali resistance, high density, and is free of bubbles and pinholes after polishing. Its specifications are 30mm*30mm, the plate thickness is 3mm, and the total length is 800mm.

[0031] Example 3: Based on Example 1, a grinding wheel 201 is movably mounted on the surface of the cutter roller 102, a blade 203 is fixedly mounted on the surface of the cutter roller 102, a pressure plate 202 is fixedly mounted on the surface of the blade 203, and a pusher half nut 204 is fixedly mounted on the surface of the pressure plate 202.

[0032] Working principle: Before changing the blade, open the front cover of the SQ36A stalk cutting machine, attach the fixture to the designated area on the left, close the brake on the blade roller 102, and slowly rotate the blade roller 102 from top to bottom. At the same time, adjust the extension length of the center lead screw 401 of the blade setting mechanism so that it lightly touches the blade edge. Tighten the locking screw 402. When the blade setter is properly adjusted, when the spherical end face of the center lead screw 401 passes over the blade edge, touch the blade setter support plate 301 with your hand; there should be a slight vibration. When changing the blade, try to avoid impacting the blade setter to prevent damage. The original position should be maintained, while also avoiding excessive extension of the blade 203. After changing the blade, align the left edge of the blade 203 with the top spherical end face of the left-side tool setting assembly of the tool calibrator. Control the angle of the blade roller 102 with your left hand and use a special tool to feed the blade with your right hand. When the blade edge of the blade 203 lightly touches the top spherical end face of the tool calibrator, the extension length of the blade 203 is appropriate. Then align the right edge of the blade 203 with the top spherical end face of the left-side tool setting assembly of the tool calibrator and check whether the extension length of the blade 203 is consistent. Adjust all 8 blades 203 in sequence.

[0033] It should be noted that, in this document, 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. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A blade straightening device for a shredder, comprising a machine body (101) and a blade roller (102), wherein the blade roller (102) is rotatably mounted inside the machine body (101), characterized in that: The surface of the body (101) is provided with a tool-calibrating mechanism, which includes a tool-setting assembly and a support and fixing assembly; The tool setting assembly includes a central lead screw (401), an intermediate nut (403), and a locking nut (404). The central lead screw (401) is located in front of the tool roller (102). The intermediate nut (403) is attached to the outer surface of the central lead screw (401), and the locking nut (404) is attached to the lower outer surface of the intermediate nut (403).

2. The blade alignment device for a shredder according to claim 1, characterized in that: The surface of the intermediate nut (403) is provided with an arc-shaped groove (405), and a locking screw (402) is fastened inside the arc-shaped groove (405).

3. The blade alignment device for a shredder according to claim 1, characterized in that: The central lead screw (401) is equipped with an M4 fine thread pair for feed adjustment with a pitch of 0.5mm, and the top of the central lead screw (401) has a spherical end face.

4. The blade alignment device for a shredder according to claim 1, characterized in that: The intermediate nut (403) is made of self-lubricating brass.

5. The blade alignment device for a shredder according to claim 1, characterized in that: The support and fixing components include a support plate (301), screw holes (302), and fixing bolts (303). The support plate (301) has screw holes (302) on its surface. The fixing bolts (303) pass through the screw holes (302) and are connected to the surface of the body (101). A central lead screw (401) is installed on the surface of the support plate (301). The central lead screws (401) are symmetrically distributed on the surface of the support plate (301).

6. A blade alignment device for a shredder according to claim 5, characterized in that: The support plate (301) is made of 201 stainless steel angle steel, with a specification of 30mm*30mm, a plate thickness of 3mm, and a total length of 800mm.

7. The blade alignment device for a shredder according to claim 1, characterized in that: A grinding wheel (201) is movably mounted on the surface of the cutter roller (102), a blade (203) is fixedly mounted on the surface of the cutter roller (102), a pressure plate (202) is fixedly mounted on the surface of the blade (203), and a pusher half nut (204) is fixedly mounted on the surface of the pressure plate (202).

8. A blade alignment device for a shredder according to claim 1, characterized in that: The machine body (101) is an SQ36A type stalk cutter, the number of blades (203) is 8, and the diameter of the cutter roller (102) is 600mm.

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