Square particle cutting mechanism for sheet

Abstract

The utility model relates to a mechanism for cutting square particles from sheets. The mechanism comprises a fixed cutter assembly and a rotary cutter assembly, the fixed cutter assembly comprises a support and a fixed cutter installed on the upper front side of the support. The rotary cutter assembly comprises a rotary shaft and a rotary cutter installed on the rotary shaft. The rotary knife is arranged on the front side of the fixed knife; the rotary shaft is used for driving one side, close to the fixed knife, of the rotary knife to rotate from top to bottom; a plurality of convex blocks and grooves are sequentially and alternately arranged on the front side of the fixed cutter, a plurality of concave rings and convex rings are axially and alternately arranged on the rotary cutter, the concave rings are in one-to-one correspondence with the convex blocks, and the convex rings are in one-to-one correspondence with the grooves; the concave ring is uniformly provided with a plurality of first cutting blocks along the circumference, and the first cutting blocks are respectively matched with the front side walls of the corresponding convex blocks; a plurality of second cutting blocks in one-to-one correspondence with the first cutting blocks are uniformly arranged on the convex ring along the circumference; the second cutting blocks are respectively matched with the bottom surfaces of the corresponding grooves; transverse cutting and longitudinal cutting are completed at the same time through one cutting roller, the sheet recycling process is simplified, and the equipment cost and the maintenance cost are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet material recycling, in particular to a sheet material square particle cutting mechanism. Background Art

[0002] Shredders for producing pellets from sheet material typically have a longitudinal cutting device with cutting rollers and a transverse cutting device with cutting rollers, with the transverse cutting device located downstream of the longitudinal cutting device. The supplied sheet material is first shredded into a plurality of longitudinal strips by the longitudinal cutting device. These strips are then shredded transversely to the direction of sheet material travel by the transverse cutting device to produce the corresponding pellets. Utility Model Content

[0003] Based on the above description, the utility model provides a sheet material cutting square particle mechanism, which simultaneously completes transverse cutting and longitudinal cutting through a cutting roller, simplifies the sheet material recycling process, and saves equipment cost and maintenance cost.

[0004] The utility model solves the above-mentioned technical problem with the following technical solution: a sheet material square particle cutting mechanism, comprising a fixed knife assembly and a rotary knife assembly; the fixed knife assembly comprises a bracket and a fixed knife mounted on the front upper side of the bracket; the rotary knife assembly comprises a rotating shaft and a rotary knife mounted on the rotating shaft; the rotary knife is arranged on the front side of the fixed knife, and the rotating shaft is used to drive the rotary knife to rotate from top to bottom on the side close to the fixed knife;

[0005] The front side of the fixed knife is alternately provided with a plurality of protrusions and grooves in the horizontal direction, and the rotary knife is alternately provided with a plurality of concave rings and convex rings in the axial direction, wherein the concave rings correspond to the protrusions one-to-one, and the convex rings correspond to the grooves one-to-one;

[0006] The concave rings are uniformly provided with a number of first cut blocks along the circumference, and the first cut blocks are respectively matched with the front side walls of the corresponding convex blocks; the convex rings are uniformly provided with a number of second cut blocks corresponding to the first cut blocks one by one along the circumference, and the second cut blocks are respectively matched with the bottom surfaces of the corresponding grooves.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the front side of the first cut block along the rotation direction is a first cutting surface, and the front side of the second cut block along the rotation direction is a second cutting surface; the first cutting surface protrudes from the second cutting surface.

[0009] Furthermore, the outer end of the first cutting surface is inclined toward the front side in the rotation direction.

[0010] Furthermore, the outer end of the second cutting surface is inclined toward the front side in the rotation direction.

[0011] Furthermore, the top of the fixed knife and the top of the bracket form a positioning plane for supporting the sheet material to be transported from the back to the front.

[0012] Furthermore, the fixed knife is detachably connected to the bracket.

[0013] Furthermore, the rotary cutter is detachably connected to the rotating shaft.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0015] The utility model uses a cutting roller to simultaneously complete transverse cutting and longitudinal cutting, simplifies the sheet material recycling process, and saves equipment cost and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a mechanism for cutting sheet materials into square particles provided by an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 Side view of;

[0018] Figure 3 for Figure 1 A top view of

[0019] Figure 4 for Figure 3 A partial enlarged schematic diagram of area A in the middle;

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 1. Fixed knife assembly; 11. Bracket; 12. Fixed knife; 121. Protrusion; 122. Groove; 2. Rotary knife assembly; 21. Rotating shaft; 22. Rotary knife; 221. Concave ring; 222. First cutting block; 223. First cutting surface; 224. Concave ring; 225. Second cutting block; 226. Second cutting surface; 3. Positioning plane. DETAILED DESCRIPTION

[0022] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0024] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection" should be understood as "electrical connection", "communication connection", etc., if the connected circuits, modules, units, etc. can transmit electrical signals or data to each other.

[0025] A mechanism for cutting sheet material into square particles comprises a fixed blade 12 assembly 1 and a rotary blade 22 assembly 2. The fixed blade 12 assembly 1 comprises a bracket 11 and a fixed blade 12 mounted on the upper front side of the bracket 11. The rotary blade 22 assembly 2 comprises a rotating shaft 21 and a rotary blade 22 mounted on the rotating shaft 21. The rotary blade 22 is disposed in front of the fixed blade 12, and the rotating shaft 21 is used to drive the side of the rotary blade 22 closest to the fixed blade 12 to rotate from top to bottom. The top of the fixed blade 12 and the top of the bracket 11 form a positioning plane 3 for supporting the sheet material as it is transported from back to front. After the sheet material passes between the fixed blade 12 and the rotary blade 22, it is cut into a plurality of square particles.

[0026] The front side of the fixed knife 12 is alternately provided with a plurality of protrusions 121 and grooves 122 in the horizontal direction, and the rotary knife 22 is alternately provided with a plurality of concave rings 221 and convex rings 224 in the axial direction. The concave rings 221 correspond to the protrusions 121 one by one, and the convex rings 224 correspond to the grooves 122 one by one.

[0027] Each concave ring 221 is evenly provided with a plurality of first cutouts 222 along its circumference, and each of the first cutouts 222 matches the front sidewall of the corresponding protrusion 121. Each of the protrusion rings 224 is evenly provided with a plurality of second cutouts 225 along its circumference, corresponding one-to-one to the first cutouts 222, and each of the second cutouts 225 matches the bottom surface of the corresponding groove 122.

[0028] In this embodiment, after the front end of the sheet moves between the fixed blade 12 and the rotary blade 22, the first cutting block 222 and the second cutting block 225 alternately press the transverse portions of the front end of the sheet into the front ends of the protrusions 121 and the grooves 122, thereby cutting the front end of the sheet transversely. At the same time, due to the alternating arrangement of the protrusions 121 and the grooves 122, the cut front end of the sheet is cut into several pieces along the longitudinal direction.

[0029] In this embodiment, a cutting roller is used to simultaneously complete the transverse cutting and the longitudinal cutting of the sheet material, thereby cutting the sheet material into a plurality of square particles, simplifying the sheet material recycling process and saving equipment costs and maintenance costs.

[0030] The front side of the first cut block 222 along the rotation direction is the first cutting surface 223, and the front side of the second cut block 225 along the rotation direction is the second cutting surface 226. The first cutting surface 223 protrudes from the second cutting surface 226, and preferentially cuts the front end of the sheet in front of the protrusion 121.

[0031] In addition, the outer ends of the first cutting surface 223 and the second cutting surface 226 are both inclined toward the front side in the rotation direction, so that the rear ends of the square particles to be cut off are first subjected to the cutting force, thereby ensuring the cutting effect.

[0032] In this embodiment, the fixed blade 12 is detachably connected to the bracket 11, and the rotary blade 22 is detachably connected to the rotating shaft 21. The corresponding fixed blade 12 and rotary blade 22 can be replaced according to the size of the square particles to be produced.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sheet material cutting square particle mechanism, characterized in that: The present invention comprises a fixed knife assembly and a rotary knife assembly; the fixed knife assembly comprises a bracket and a fixed knife mounted on the front upper side of the bracket; the rotary knife assembly comprises a rotating shaft and a rotary knife mounted on the rotating shaft; the rotary knife is arranged on the front side of the fixed knife, and the rotating shaft is used to drive the rotary knife to rotate from top to bottom on the side close to the fixed knife; The front side of the fixed knife is alternately provided with a plurality of protrusions and grooves in the horizontal direction, and the rotary knife is alternately provided with a plurality of concave rings and convex rings in the axial direction, wherein the concave rings correspond to the protrusions one-to-one, and the convex rings correspond to the grooves one-to-one; The concave rings are uniformly provided with a number of first cut blocks along the circumference, and the first cut blocks are respectively matched with the front side walls of the corresponding convex blocks; the convex rings are uniformly provided with a number of second cut blocks corresponding to the first cut blocks one by one along the circumference, and the second cut blocks are respectively matched with the bottom surfaces of the corresponding grooves.

2. The sheet material square particle cutting mechanism according to claim 1, characterized in that: The front side of the first cut block along the rotation direction is a first cutting surface, and the front side of the second cut block along the rotation direction is a second cutting surface; the first cutting surface protrudes from the second cutting surface.

3. The sheet material square particle cutting mechanism according to claim 2, characterized in that: The outer end of the first cutting surface is inclined toward the front side in the rotation direction.

4. The sheet material square particle cutting mechanism according to claim 2, characterized in that: The outer end of the second cutting surface is inclined toward the front side in the rotation direction.

5. The sheet material square particle cutting mechanism according to claim 1, characterized in that: The top of the fixed knife and the top of the bracket form a positioning plane for supporting the sheet material to be conveyed from the back to the front.

6. The sheet material square particle cutting mechanism according to claim 1, characterized in that: The fixed knife is detachably connected to the bracket.

7. The sheet material square particle cutting mechanism according to claim 1, characterized in that: The rotary cutter is detachably connected to the rotating shaft.

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