Bill crusher

Abstract

The utility model discloses a bill crusher which comprises a crusher body, a conveying roller is rotationally installed in the crusher body, a crushing roller is rotationally installed in the crusher body and located below the conveying roller, a second belt pulley is fixedly installed at one end of the crushing roller, and a first belt pulley is rotationally installed at one end of the conveying roller. A transmission belt sleeves the first belt disc and the second belt disc, convex thorns are fixedly mounted on the outer walls of the crushing rollers, a mounting groove is formed in the front surface of the crusher, a collecting box is slidably mounted in the mounting groove, a transmission wheel is rotatably mounted on the inner wall of one side of the collecting box, and a stirring shaft is rotatably mounted at the center in the collecting box; a transmission gear is rotationally mounted in the collecting box, and gears are fixedly mounted on the transmission wheel and the stirring shaft through shafts. The transmission wheel abuts against the edge of the smashing roller, the transmission wheel rotates to drive the stirring shaft to rotate, the stirring shaft rotates to stir and scatter the shredded bills, meanwhile, the shredded bills are mixed with other bill fragments, and the later recovery difficulty is greatly increased.

Description

Technical Field

[0001] The utility model relates to a pulverizer, in particular to a bill pulverizer. Background Art

[0002] Bills and receipts contain a large amount of confidential information, which needs to be shredded after use to avoid leakage of private information. Manual tearing method, first of all, is not completely shredded and there is a possibility of re-splicing it later. Secondly, the manual efficiency is low. When a large number of bills are invalidated, the human efficiency is too slow, so a bill shredding device is needed.

[0003] For example, a bill shredding device for financial and accounting use, disclosed in a Chinese patent with publication number CN215917580U, relates to the technical field of bill shredding devices, and includes: a main body; a rotating mechanism, the rotating mechanism includes a crushing disk and a drain seat, the crushing disk is located on the inner wall of the main body, the drain seat is located on the inner wall of the main body and below the crushing disk; a fixing mechanism, the fixing mechanism includes a collecting box and a moving block, the collecting box is located on the inner wall of the main body and below the drain seat, and the moving block is located at one end of the main body. The utility model avoids the fluffy accumulation of bills by setting a rotating mechanism. When the fluffy bills need to be squeezed, the second transmission motor rotates to rotate the rotating rod, the rotating rod rotates to rotate the second gear, the second gear rotates to move the moving seat down along the outer wall of the drain seat, the moving seat moves down to move the pressure seat down, and the pressure seat squeezes the bills, thereby avoiding the fluffy accumulation of bills;

[0004] Some problems were found when using the above-mentioned existing bill shredding device for financial and accounting. First, the shredding disk was used, and the shredded paper bills were in strips, with poor shredding effect. At the same time, they fell into the collection box without any processing. The same bill was shredded and piled up in one place, making it difficult to collect and splice them later, which may lead to the problem of bill information leakage. Utility Model Content

[0005] The purpose of the utility model is to provide a bill shredder to solve the existing problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bill crusher, including a crusher, a conveying roller rotatably installed in the crusher, a crushing roller rotatably installed in the crusher and below the conveying roller, a second belt pulley fixedly installed on one end of the crushing roller, a first belt pulley rotatably installed on one end of the conveying roller, a transmission belt is sleeved on the first belt pulley and the second belt pulley, a convex thorn is fixedly installed on the outer wall of the crushing roller, an installation groove is opened on the front of the crusher, a collecting box is slidably installed in the installation groove, a transmission wheel is rotatably installed on the inner wall of one side of the collecting box, a stirring shaft is rotatably installed in the center of the collecting box, a transmission gear is rotatably installed in the collecting box, gears are fixedly installed on the transmission wheel and the stirring shaft through shafts, and the gears and the transmission gears cooperate with each other.

[0007] Preferably, a feed inlet is provided on the crusher.

[0008] Preferably, a power motor is fixedly mounted on one side of the crusher, and an output end of the power motor is fixedly connected to a crushing roller.

[0009] Preferably, a handle is fixedly mounted on the front of the collection box, and a limiting groove is provided on the front of the collection box near one side edge.

[0010] Preferably, a return spring is fixedly installed in the limiting groove, a limit latch is fixedly installed on the other end of the return spring, and a displacement handle is fixedly installed on the limit latch.

[0011] Preferably, a clamping block is fixedly installed on the front side of the crusher, a limiting hole is provided in the clamping block, and the limiting hole cooperates with a limiting pin.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. Start the power motor to drive the crushing roller to rotate. The rotation of the crushing roller will synchronously drive the second belt pulley and the convex thorns to rotate. The second belt pulley cooperates with the first belt pulley through the transmission belt, so that the rotation of the second belt pulley will drive the conveying roller to rotate. The diameter of the second belt pulley is smaller than that of the first belt pulley, so the rotation speed of the crushing roller will be greater than the rotation speed of the conveying roller. By utilizing the speed difference between the crushing roller and the conveying roller, the convex thorns will tear the bills slowly conveyed by the conveying roller into irregular pieces, effectively increasing the difficulty of later splicing.

[0014] 2. The transmission wheel rests against the edge of the crushing roller. The rotation of the transmission wheel will drive the stirring shaft to rotate. The rotation of the stirring shaft can stir and break up the torn bills and mix them with other bill fragments, greatly increasing the difficulty of later recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 It is a partial cross-sectional view of the utility model;

[0018] Figure 4 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the internal transmission structure of the collection box of the present utility model.

[0020] In the figure: 1. crusher; 101. feed port; 102. mounting slot; 2. conveying roller; 201. first belt pulley; 202. transmission belt; 3. crushing roller; 301. convex thorn; 302. second belt pulley; 303. power motor; 4. collecting box; 401. stirring shaft; 403. transmission wheel; 404. transmission gear; 406. handle; 5. limiting groove; 501. return spring; 502. limiting latch; 503. displacement handle; 6. block; 601. limiting hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 The utility model provides a technical solution: a bill crusher, including a crusher 1, a conveying roller 2 is rotatably installed in the crusher 1, a crushing roller 3 is rotatably installed in the crusher 1 and below the conveying roller 2, a second belt pulley 302 is fixedly installed on one end of the crushing roller 3, a first belt pulley 201 is rotatably installed on one end of the conveying roller 2, a transmission belt 202 is sleeved on the first belt pulley 201 and the second belt pulley 302, a convex thorn 301 is fixedly installed on the outer wall of the crushing roller 3, a mounting groove 102 is opened on the front of the crusher 1, a collecting box 4 is slidably installed in the mounting groove 102, a transmission wheel 403 is rotatably installed on the inner wall of one side of the collecting box 4, a stirring shaft 401 is rotatably installed at the center of the collecting box 4, a transmission gear 404 is rotatably installed in the collecting box 4, and a gear is fixedly installed on the transmission wheel 403 and the stirring shaft 401 through an axis, and the gear and the transmission gear 404 cooperate with each other.

[0023] In this embodiment, by placing the bill into the device, starting the power device to drive the pulverizing roller 3 to rotate, the rotation of the pulverizing roller 3 will synchronously drive the second belt pulley 302 and the ridge 301 to rotate, the second belt pulley 302 cooperates with the first belt pulley 201 through the transmission belt 202, so that the rotation of the second belt pulley 302 will drive the rotation of the first belt pulley 201, and the rotation of the first belt pulley 201 will drive the rotation of the conveying roller 2. The diameter of the second belt pulley 302 is smaller than that of the first belt pulley 201, so that the rotation speed of the pulverizing roller 3 will be greater than the rotation speed of the conveying roller 2, and the bill will be transported first. The feeding roller 2 is pressed against the inner wall of the crusher 1 and slowly conveyed downward. By utilizing the speed difference between the crushing roller 3 and the conveying roller 2, the convex thorns 301 will tear the slowly conveyed bills into pieces and drop them into the collecting box 4. At the same time, the transmission wheel 403 is pressed against the edge of the crushing roller 3, and the edge of the convex thorns 301 is not set, so that the rotation of the crushing roller 3 will drive the transmission wheel 403 to rotate. Through the cooperation of the transmission wheel 403 and the gear, the rotation of the transmission wheel 403 will drive the rotation of the stirring shaft 401. The rotation of the stirring shaft 401 can stir and break up the torn bills, and mix them with other bill fragments, which greatly increases the difficulty of later recovery.

[0024] In order to achieve the purpose of putting the bills into the device, the device adopts the following technical solution: a feed port 101 is opened on the crusher 1, a power motor 303 is fixedly installed on one side of the crusher 1, and the output end of the power motor 303 is fixedly connected to the crushing roller 3.

[0025] The bills are transported into the crusher 1 through the feed port 101, and the power motor 303 is started to drive the crushing roller 3 to rotate, providing power for the entire device.

[0026] Among them, in order to achieve the purpose of fixing the collecting box 4 in the mounting groove 102, the present device is implemented by adopting the following technical scheme: a handle 406 is fixedly installed on the front of the collecting box 4, a limiting groove 5 is provided on the front of the collecting box 4 and close to one side edge, a return spring 501 is fixedly installed in the limiting groove 5, a limiting pin 502 is fixedly installed on the other end of the return spring 501, a displacement handle 503 is fixedly installed on the limiting pin 502, a clamping block 6 is fixedly installed on the front of the crusher 1, a limiting hole 601 is provided in the clamping block 6, and the limiting hole 601 cooperates with the limiting pin 502.

[0027] The collection box 4 can be moved by the handle 406, and the return spring 501 can provide a certain thrust for the limit pin 502. The limit pin 502 will be inserted into the limit hole 601 under the thrust, thereby fixing the collection box 4 inside the installation groove 102, and the displacement handle 503 can drive the limit pin 502 to move.

[0028] The working principle and use process of the utility model are as follows: when using, the device needs to be placed in a suitable position, and the power motor 303 is started to drive the crushing roller 3, the conveying roller 2, and the stirring shaft 401 to rotate, and the bills are put into the crusher 1 through the feed port 101. By utilizing the speed difference between the conveying roller 2 and the crushing roller 3, the convex thorns 301 can tear the conveyed bills into irregular fragments, and then the bill fragments will fall into the collection box 4 for storage. The rotation of the stirring shaft 401 will mix the bill fragments together. When it is necessary to clean the bill fragments inside the collection box 4, it is only necessary to move the displacement handle 503 with the limit pin 502 out of the limit hole 601 to release the fixation of the collection box 4. At this time, the collection box 4 can be easily pulled out through the handle 406 to dump the internal bill fragments.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bill shredder, comprising a shredder (1), characterized in that: A conveying roller (2) is rotatably mounted in the crusher (1); a crushing roller (3) is rotatably mounted in the crusher (1) and located below the conveying roller (2); a second belt pulley (302) is fixedly mounted on one end of the crushing roller (3); a first belt pulley (201) is rotatably mounted on one end of the conveying roller (2); a transmission belt (202) is sleeved on the first belt pulley (201) and the second belt pulley (302); a convex thorn (301) is fixedly mounted on the outer wall of the crushing roller (3); The crusher (1) is provided with an installation groove (102) on the front side, a collection box (4) is slidably installed in the installation groove (102), a transmission wheel (403) is rotatably installed on the inner wall of one side of the collection box (4), a stirring shaft (401) is rotatably installed at the center of the collection box (4), a transmission gear (404) is rotatably installed in the collection box (4), and a gear is fixedly installed on the transmission wheel (403) and the stirring shaft (401) through an axis, and the gear and the transmission gear (404) cooperate with each other.

2. A bill shredder according to claim 1, characterized in that: The crusher (1) is provided with a feed inlet (101).

3. A bill shredder according to claim 1, characterized in that: A power motor (303) is fixedly mounted on one side of the crusher (1), and an output end of the power motor (303) is fixedly connected to a crushing roller (3).

4. A bill shredder according to claim 1, characterized in that: A handle (406) is fixedly mounted on the front of the collection box (4), and a limiting groove (5) is provided on the front of the collection box (4) near a side edge.

5. A bill shredder according to claim 4, characterized in that: A return spring (501) is fixedly mounted in the limit groove (5), a limit latch (502) is fixedly mounted on the other end of the return spring (501), and a displacement handle (503) is fixedly mounted on the limit latch (502).

6. A bill shredder according to claim 5, characterized in that: A clamping block (6) is fixedly mounted on the front of the crusher (1), a limiting hole (601) is provided in the clamping block (6), and the limiting hole (601) cooperates with the limiting latch (502).

Images