Cutter replacing assembly of paper shredder

Abstract

The utility model discloses a paper shredder cutter replacement assembly, which belongs to the field of paper shredders and comprises a cutter assembly and a transmission mechanism, the cutter assembly comprises two transmission shafts, two ends of each transmission shaft are fixedly connected with bolts, a plurality of cutter blades are equidistantly arranged on the side surfaces of the two transmission shafts in a staggered manner, and the cutter blades are fixedly connected with the transmission mechanism. The transmission mechanism comprises a first gear and a second gear which are installed at one ends of two transmission shafts, one side of the second gear is fixedly connected with a first rotating wheel, a servo motor is installed at one end of one transmission shaft, and the other end of the other transmission shaft is fixedly connected with a second rotating wheel. According to the paper shredder cutter, the cutter assembly is matched with the transmission mechanism, so that the cutter blade can be quickly disassembled and assembled, the disassembly, assembly and replacement convenience of the paper shredder cutter is improved, meanwhile, the use smoothness of the paper shredder cutter is improved through mutual matching of the structures, and the paper shredding quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of paper shredders, in particular to a paper shredder cutter replacement assembly. Background Art

[0002] A shredder is a mechanical device used to cut paper, documents and other items into small pieces to achieve confidentiality, reduce volume or facilitate recycling and reuse. It is usually composed of a set of rotating blades, a paper comb and a drive motor. Paper is fed from between these interlocking blades and cut into many small pieces of paper. Existing shredders are composed of multiple cutters, which may cause blockage and damage to the shredder after long-term use. Based on this, it is necessary to provide a shredder cutter that is easy to disassemble and replace. In addition, the smoothness of the existing shredder cutter during use needs to be improved, which affects the quality of shredded paper. Based on this, it is necessary to provide a cutter replacement component that can ensure the smoothness and quality of shredding. Utility Model Content

[0003] The embodiment of the utility model provides a shredder cutter replacement assembly, which aims to solve the problem that the existing replacement assembly is not easy to quickly disassemble and assemble and shred paper smoothly.

[0004] To achieve the above-mentioned purpose, the utility model provides a paper shredder cutter replacement assembly, comprising a cutter assembly and a transmission mechanism;

[0005] The cutter assembly includes two transmission shafts, both ends of the two transmission shafts are fixedly connected with bolts, the side surfaces of the two transmission shafts are equidistantly and staggeredly provided with a plurality of cutting blades, and an I-shaped spacer ring is connected between the plurality of cutting blades, and the side surfaces of the bolts are threadedly connected with nuts;

[0006] The transmission mechanism includes a first gear and a second gear installed at one end of two transmission shafts, a first rotating wheel is fixedly connected to one side of the second gear, a servo motor is installed at one end of one of the transmission shafts, the output end of the servo motor is connected to the second rotating wheel, a transmission belt is wound around the first rotating wheel and the second rotating wheel, the other ends of the two transmission shafts are connected to a mounting plate, and two bearings are fixedly installed on the upper end of the mounting plate.

[0007] As a preferred solution of the present invention, the side surfaces of the transmission shaft are fixedly connected with several limit bars, and the surfaces of several cutting blades and I-shaped spacer rings are provided with limit grooves, and the limit bars and the transmission shaft are clamped inside the limit grooves.

[0008] As a preferred solution of the present invention, both ends of the transmission shaft are fixedly connected with connecting shafts, and two positioning grooves are provided on the side surface of the connecting shaft at one end.

[0009] As a preferred solution of the present invention, the inner walls of the two bearings are fixedly connected with two positioning bars, and the two positioning bars are both clamped in the interior of the positioning groove.

[0010] As a preferred solution of the present invention, the transmission shaft and the plurality of cutting blades are all made of stainless steel.

[0011] As a preferred solution of the present invention, the I-shaped spacer ring is made of polyethylene.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. When installing a plurality of cutting blades, it is only necessary to alternately arrange the plurality of cutting blades and the I-shaped spacer rings on the side surface of the transmission shaft, and then connect the drop thread to the side surface of the bolt. By screwing the nut along the bolt close to the cutting blade, the plurality of cutting blades can be squeezed and fixed. Therefore, it is possible to install a plurality of cutting blades. When disassembling, it is only necessary to remove the nut from the side surface of the bolt. Therefore, it is possible to disassemble and replace a plurality of cutting blades and the nut. Compared with the replacement components in the prior art, the present invention facilitates the disassembly and replacement of the cutting blades through the cooperation of the above structures, thereby improving the convenience of disassembly and replacement of the shredder cutter.

[0014] 2. When the shredder cutter is in use, first start the servo motor to rotate the second wheel, and cooperate with the transmission belt to rotate the first wheel and the second gear on its surface. At this time, the first gear and the second gear are engaged and connected, so the two transmission shafts can be controlled to rotate in opposite directions with the staggered cutting blades to achieve the paper shredding operation. At the same time, the transmission shaft is inserted in the bearing. The existence of the bearing can reduce the friction of the transmission shaft, thereby improving the smoothness of the use of the shredder cutter to ensure the quality of shredding. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a disassembled diagram of the cutter assembly structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the transmission shaft structure of the utility model;

[0018] Figure 4 This is a disassembled diagram of the transmission mechanism structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the bearing structure of the utility model.

[0020] In the figure: 100, cutter assembly; 101, drive shaft; 102, bolt; 103, cutter blade; 104, I-shaped spacer ring; 105, nut;

[0021] 111, limit strip; 112, limit slot; 121, connecting shaft; 122, positioning slot;

[0022] 200. Transmission mechanism; 201. First gear; 202. Second gear; 203. First rotating pulley; 204. Servo motor; 205. Second rotating pulley; 206. Transmission belt; 207. Mounting plate; 208. Bearing; 211. Positioning strip. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1 - Figure 3 , the utility model provides a paper shredder cutter replacement assembly, comprising a cutter assembly 100 and a transmission mechanism 200;

[0025] The cutter assembly 100 includes two transmission shafts 101, each of which is fixedly connected to a bolt 102 at both ends. A plurality of cutting blades 103 are equidistantly and staggeredly arranged on the side surfaces of the two transmission shafts 101. I-shaped spacer rings 104 are connected between the plurality of cutting blades 103. Nuts 105 are threadedly connected to the side surfaces of the bolts 102.

[0026] The transmission mechanism 200 includes a first gear 201 and a second gear 202 installed at one end of two transmission shafts 101, and a first rotating wheel 203 is fixedly connected to one side of the second gear 202. A servo motor 204 is installed at one end of one of the transmission shafts 101, and the output end of the servo motor 204 is connected to the second rotating wheel 205. A transmission belt 206 is wound around the first rotating wheel 203 and the second rotating wheel 205. The other ends of the two transmission shafts 101 are connected to a mounting plate 207, and two bearings 208 are fixedly installed on the upper end of the mounting plate 207.

[0027] In a specific embodiment, the cutter assembly 100 is provided in conjunction with the transmission mechanism 200, which not only facilitates the quick disassembly and assembly of the cutter blade 103, thereby improving the convenience of disassembly and replacement of the shredder cutter, but also facilitates the use of the shredder cutter through the cooperation of the above structures, so as to ensure the quality of shredding. When installing the cutter blade 103, first, a plurality of cutter blades 103 and I-shaped spacer rings 104 are staggered and arranged on the side of the transmission shaft 101, and then, only the nut 105 is screwed on the side surface of the bolt 102 to squeeze and fix the plurality of cutter blades 103 and the I-shaped spacer ring 104. When in use, first start The servo motor 204 rotates the second rotating wheel 205, and cooperates with the transmission belt 206 to rotate the first rotating wheel 203, and then rotates the second gear 202. At the same time, the second gear 202 is meshed with the first gear 201, so that the two transmission shafts 101 and the plurality of cutting blades 103 can rotate in opposite directions to perform paper shredding operations. The presence of the bearing 208 can reduce the friction of the transmission shaft 101, improve the smoothness of paper shredding, and thus ensure the quality of paper shredding. During disassembly, only the nut 105 needs to be removed to disassemble the plurality of cutting blades 103 and the I-shaped spacer ring 104, thereby improving the convenience of disassembly, assembly and replacement of each component.

[0028] See also Figure 2 and Figure 3 The side surfaces of the two transmission shafts 101 are fixedly connected with several limit bars 111, and the surfaces of several cutting blades 103 and I-shaped spacer rings 104 are provided with limit grooves 112, and the limit bars 111 and the transmission shafts 101 are both clamped inside the limit grooves 112.

[0029] In a specific embodiment, the limiting strip 111 is clamped in the limiting groove 112. When the transmission shaft 101 rotates, the limiting strip 111 can rotate with the cutting blade 103 to facilitate the paper shredding operation.

[0030] See also Figure 2 and Figure 3 Both ends of the transmission shaft 101 are fixedly connected to a connecting shaft 121 , and two positioning grooves 122 are provided on the side surface of one end of the connecting shaft 121 .

[0031] In a specific embodiment, the positioning groove 122 facilitates stable connection between the bearing 208 and the connecting shaft 121 .

[0032] See also Figure 4 and Figure 5 The inner walls of the two bearings 208 are fixedly connected with two positioning bars 211 , and the two positioning bars 211 are both clamped in the interior of the positioning groove 122 .

[0033] In a specific embodiment, the positioning bar 211 is clamped in the positioning groove 122 , and when the transmission shaft 101 rotates, it can rotate synchronously with the bearing 208 .

[0034] See also Figure 2 and Figure 3 The transmission shaft 101 and the plurality of cutting blades 103 are all made of stainless steel.

[0035] In a specific embodiment, the transmission shaft 101 and the cutting blade 103 made of stainless steel can avoid rust, so as to extend the service life of both.

[0036] See also Figure 2 and Figure 3 , the I-shaped spacer ring 104 is made of polyethylene.

[0037] In a specific embodiment, the I-shaped spacer ring 104 made of polyethylene can reduce its own weight and control the cost.

[0038] Working principle: When installing the cutting blades 103, first, several cutting blades 103 and I-shaped spacer rings 104 are staggered and arranged on the side of the transmission shaft 101, and then the nut 105 is screwed on the side surface of the bolt 102 to squeeze and fix the several cutting blades 103 and I-shaped spacer rings 104. When in use, first start the servo motor 204 to rotate the second rotary wheel 205 and the coordinated transmission belt 206 can rotate the first rotary wheel 203, thereby rotating the second gear 202. At the same time, the second gear 202 and the first gear 201 are meshed and connected, and then the two transmission shafts 101 can rotate with several cutting blades 103 in opposite directions to perform paper shredding operations. At the same time, the presence of the bearing 208 can reduce the friction of the transmission shaft 101 to improve the smoothness of paper shredding, thereby ensuring the quality of paper shredding. When disassembling, you only need to remove the nut 105 to disassemble the several cutting blades 103 and I-shaped spacer rings 104, thereby improving the convenience of disassembly and replacement of each component.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A paper shredder cutter replacement assembly, characterized in that: include: A cutter assembly (100), the cutter assembly (100) comprising two transmission shafts (101), both ends of the two transmission shafts (101) being fixedly connected with bolts (102), the side surfaces of the two transmission shafts (101) being equidistantly and staggeredly provided with a plurality of cutting blades (103), the plurality of cutting blades (103) being connected with I-shaped spacer rings (104), and the side surfaces of the bolts (102) being threadedly connected with nuts (105); A transmission mechanism (200) includes a first gear (201) and a second gear (202) mounted on one end of two transmission shafts (101), one side of the second gear (202) being fixedly connected to a first rotating wheel (203), one end of one of the transmission shafts (101) being mounted with a servo motor (204), an output end of the servo motor (204) being connected to a second rotating wheel (205), a transmission belt (206) being wound around the first rotating wheel (203) and the second rotating wheel (205), the other ends of the two transmission shafts (101) being connected to a mounting plate (207), and two bearings (208) being fixedly mounted on the upper end of the mounting plate (207).

2. The paper shredder cutter replacement assembly according to claim 1, characterized in that: The side surfaces of the two transmission shafts (101) are fixedly connected to a plurality of limiting strips (111), the surfaces of the plurality of cutting blades (103) and the I-shaped spacer rings (104) are provided with limiting grooves (112), and the limiting strips (111) and the transmission shafts (101) are both clamped inside the limiting grooves (112).

3. The paper shredder cutter replacement assembly according to claim 1, characterized in that: Both ends of the transmission shaft (101) are fixedly connected to a connecting shaft (121), and a side surface of the connecting shaft (121) at one end is provided with two positioning grooves (122).

4. The paper shredder cutter replacement assembly according to claim 1, characterized in that: The inner walls of the two bearings (208) are fixedly connected to two positioning bars (211), and the two positioning bars (211) are clamped inside the positioning groove (122).

5. The paper shredder cutter replacement assembly according to claim 1, characterized in that: The transmission shaft (101) and the plurality of cutting blades (103) are all made of stainless steel.

6. The paper shredder cutter replacement assembly according to claim 1, characterized in that: The I-shaped spacer ring (104) is made of polyethylene.

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