Fixed-length shredding device for SD-EVO shredding machine
By designing the groove structure of the fixed-length wire cutting blade, the grinding wheel linearly forms high and low edges, the SD-EVO wire cutting machine self-grinding rectangular fixed-length wire cutting width is solved with high failure rate and grinding efficiency of self-grinding rectangular fixed-length wire cutting width of the SD-EVO wire cutting machine The problem of low performance achieves efficient fixed-length shredding effect and equipment stability.
Patent Information
- Application Number
- CN202420186535.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-25
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-25
AI Technical Summary
The SD-EVO wire cutting machine self-grinding rectangular fixed length blade has a high non-qualification rate, a long grinding cycle, low grinding efficiency, and it is easy to cause failure during grinding wheels, resulting in the inability to effectively realize fixed length wire cutting. Effect.
A fixed length wire cutting device is designed, including a fixed length wire cutting blade, and its bottom surface is provided with a plurality of grooves extending in the width direction. The left side wall and the right side wall of the groove are inclined to form a high blade, a low blade and an oblique The grinding wheel forms isosceles trapezoidal grooves through linear grinding, ensuring that the high blade and the low blade are on the same plane, reducing the feeding force of the grinding wheel and improving grinding efficiency.
The pass rate of the cut width is significantly improved, the failure rate is reduced, the rounding rate and cut quality is improved, the broken rate is reduced, the stability and safety of the equipment are ensured, and the production cost is reduced.
Smart Images
Figure CN222236677U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of tobacco, and in particular relates to a fixed-length shredding device for an SD-EVO shredding machine. Background Art
[0002] The SD-EVO wire cutting machine has a plurality of blades installed on the knife roller body, a lower knife door wire cutting strip installed on the knife door seat, and a grinding wheel installed on the grinding wheel grinding mechanism. The SD-EVO wire cutting machine controls the moving path of the grinding wheel by means of self-grinding of the grinding wheel and utilizing the program setting inside the wire cutting machine, so that the grinding wheel moves along the X-axis and feeds along the Z-axis alternately without considering the grinding wheel feeding during the blade grinding process, thereby realizing the grinding of the ordinary flat cutting blade into a self-grinding rectangular fixed-length blade, wherein the blade edge of the self-grinding rectangular fixed-length blade is provided with a plurality of blade rectangular protrusions, and a blade rectangular groove is formed between two adjacent blade rectangular protrusions, wherein no cutting edge is formed at the junction of the blade rectangular protrusion and the blade rectangular groove, and the blade rectangular protrusion and the blade rectangular groove are not on the same plane, so that the blade rectangular protrusion and the blade rectangular groove are on different cutting arcs, and the lower knife door wire cutting strip 4 matched with the self-grinding rectangular fixed-length blade is alternately distributed with wire cutting strip rectangular grooves 401 and wire cutting strip rectangular protrusions 402, see Fig.10 When cutting tobacco cakes pressed from shredded tobacco, the rectangular protrusion of the self-grinding rectangular fixed-length blade cooperates with the corresponding rectangular groove 401 of the shredded strip 4 on the lower knife door, and the rectangular groove of the self-grinding rectangular fixed-length blade cooperates with the corresponding rectangular protrusion 402 of the shredded strip 4 on the lower knife door, so as to achieve the effect of fixed-length shredding while ensuring the knife door clearance.
[0003] The qualified rate of the wire cutting width of the self-grinding rectangular fixed-length blade is compared with the qualified rate of the wire cutting width of the current flat cutting blade. It is found that although the wire cutting width of the self-grinding rectangular fixed-length blade is normally distributed, the mean shift is obvious, and the unqualified rate is 43%, while the unqualified rate of the wire cutting width of the flat cutting blade is less than 10%. Therefore, the unqualified rate of the wire cutting width of the self-grinding rectangular fixed-length blade is much higher than that of the flat cutting blade, and the current flat cutting blade cannot achieve the effect of fixed-length wire cutting.
[0004] By comparing the differences between the current reciprocating linear grinding of flat cutting blades and the grinding of self-grinding rectangular fixed-length blades, it was found that the current grinding cycle of flat cutting blades is 8 seconds / time, while the grinding cycle of self-grinding rectangular fixed-length blades is 24 seconds / time. Under the same feed amount, feed frequency, knife roller speed and copper chain ratio, the grinding cycle of self-grinding rectangular fixed-length blades is long, the grinding efficiency is low, and the blade sharpness is poor.
[0005] The self-grinding rectangular fixed-length blade is self-grinded by the grinding motion trajectory of the grinding wheel. In the actual operation process, the grinding quality of the blade will directly affect the cutting effect of the self-grinding rectangular fixed-length blade on the tobacco cake. Since the grinding wheel is subjected to greater force during the feed grinding process, the shape of the right angles on both sides of the grinding wheel is obviously abnormal, and it is easy to have cracks, broken corners and other phenomena, which will lead to abnormal grinding effect of the self-grinding rectangular fixed-length blade, which directly causes the self-grinding rectangular fixed-length blade to be unable to effectively break the wire, and fails to achieve the fixed-length effect of fixed-length cutting.
[0006] According to the motion trajectory of the grinding wheel when grinding the flat-cutting blade, it can be obtained that during the process of feeding and grinding the flat-cutting blade and grinding the flat-cutting blade into a self-grinding rectangular fixed-length blade, the grinding wheel is subjected to force in the Z-axis direction for a long time. The locking nut on the grinding wheel is very easy to loosen under force, resulting in an axial gap between the grinding wheel and the feed screw. When the feed screw rotates and drives the grinding wheel to feed synchronously, the grinding wheel retreats under the action of the grinding force, which is inconsistent with the actual grinding wheel feed amount, breaking the matching relationship between the grinding wheel, the diamond used for dressing the grinding wheel, and the knife gate gap. As a result, the fault will also cause the following chain reactions: (1) The grinding wheel cannot contact the diamond used for dressing the grinding wheel; (2) When the axial gap accumulates to a certain extent, it will cause the grinding wheel dressing and grinding vibration value to increase instantaneously; (3) The knife gate gap cannot be effectively controlled; (4) The grinding effect of the self-grinding rectangular fixed-length blade cannot be guaranteed. Utility Model Content
[0007] In view of the above-mentioned defects of the prior art, the utility model provides a fixed-length cutting device for an SD-EVO cutting machine, which can achieve the purpose of cutting tobacco into fixed lengths.
[0008] The technical solution adopted by the utility model to solve its technical problems is:
[0009] A fixed-length wire cutting device for an SD-EVO wire cutting machine comprises a fixed-length wire cutting blade, wherein a plurality of grooves are provided on the bottom surface of the fixed-length wire cutting blade, each of the grooves extends and is distributed along the front-to-rear width direction of the fixed-length wire cutting blade, the left side wall of each of the grooves is arranged obliquely toward the lower left side direction, and the right side wall is arranged obliquely toward the lower right side direction, a protrusion is formed on the bottom surface of the fixed-length wire cutting blade in the area between two adjacent grooves, the protrusion and the groove are distributed at intervals along the left and right length directions of the fixed-length wire cutting blade on the bottom surface of the fixed-length wire cutting blade, the fixed-length wire cutting blade is linearly ground by a grinding wheel on the SD-EVO wire cutting machine, and a low edge is formed at the grinding end of the bottom wall of the groove, a left oblique edge is formed at the grinding end of the left side wall of the groove, a right oblique edge is formed at the grinding end of the right side wall of the groove, and a high edge is formed at the grinding end of the protrusion, the high edge, the left oblique edge, the low edge and the right oblique edge are on the same plane, and the left and right horizontal lengths of the high edge and the low edge are equal.
[0010] Furthermore, the inclination angles of the left side wall and the right side wall of the groove are equal, and the cross-section of the groove is in the shape of an isosceles trapezoid.
[0011] Furthermore, the shapes and structures of the grooves are the same.
[0012] Furthermore, the fixed-length shredding blade is installed on the knife roller body of the SD-EVO shredding machine through a fixed-length knife lining strip, and the shape and structure of the top surface of the fixed-length knife lining strip are adapted to the shape and structure of the bottom surface of the fixed-length shredding blade.
[0013] Furthermore, it also includes a lower knife door straight wire cutting strip that cooperates with the fixed-length wire cutting blade. The lower knife door straight wire cutting strip is installed on the knife door seat of the SD-EVO wire cutting machine, and the surface of the lower knife door straight wire cutting strip that cooperates with the fixed-length wire cutting blade is a plane.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] The fixed-length wire cutting device for the SD-EVO wire cutting machine in the utility model comprises a fixed-length wire cutting blade, a plurality of grooves are arranged on the bottom surface of the fixed-length wire cutting blade, each groove extends and is distributed along the front-to-rear width direction of the fixed-length wire cutting blade, the left side wall of each groove is arranged obliquely toward the lower left side, and the right side wall is arranged obliquely toward the lower right side, a protrusion is formed on the bottom surface of the fixed-length wire cutting blade in the area between two adjacent grooves, the protrusion and the groove are distributed at intervals along the left and right length directions of the fixed-length wire cutting blade on the bottom surface of the fixed-length wire cutting blade, the fixed-length wire cutting blade is linearly ground by the grinding wheel on the SD-EVO wire cutting machine, and a low blade is formed at the grinding end of the bottom wall of the groove, a left oblique blade is formed at the grinding end of the left side wall of the groove, a right oblique blade is formed at the grinding end of the right side wall of the groove, and a high blade is formed at the grinding end of the protrusion, the high blade, the left oblique blade, the low blade and the right oblique blade are on the same plane, and the left and right horizontal lengths of the high blade and the low blade are equal; In this way, the form of the grinding wheel blade is adjusted from the original self-grinding to linear grinding, the grinding wheel grinding path is changed, and the grinding wheel is in a grinding state throughout the entire linear reciprocating motion process through the linear reciprocating operation of the grinding wheel, thereby reducing the time difference of the grinding wheel blade, reducing the feeding force of the grinding wheel, reducing the difference in the extended length of the blade, and ensuring the sharpness of the blade. By making a fixed-length shredding blade with multiple grooves on the bottom surface, the grinding wheel can naturally form a high blade, a left oblique blade, a low blade and a right oblique blade by utilizing the drop of the grinding plane of the grinding wheel during linear grinding. When cutting the tobacco cake pressed from tobacco, the high blade and the low blade are used for shredding respectively, and the left oblique blade and the right oblique blade are used to cut the tobacco between the high blade and the low blade. After canceling the feeding and cutting action of the grinding wheel grinding, the cutting radius of the knife roller of the high blade and the low blade remains unchanged. In addition, the left and right horizontal lengths of the high blade and the low blade are equal. In this way, the purpose of fixed-length shredding of tobacco is achieved through the cutting time difference of the high blade and the low blade.
[0016] In the utility model, the left wall and the right wall of the groove have the same inclination angle, the cross section of the groove is in the shape of an isosceles trapezoid, and the shape and structure of each groove are the same; thus, the effect of fixed-length cutting of tobacco can be further ensured.
[0017] The fixed-length wire cutting device for the SD-EVO wire cutting machine in the utility model also includes a lower knife door straight wire cutting strip matched with the fixed-length wire cutting blade. The lower knife door straight wire cutting strip is installed on the knife door seat of the SD-EVO wire cutting machine, and the surface of the lower knife door straight wire cutting strip matched with the fixed-length wire cutting blade is a plane; since the high blade, the left oblique blade, the low blade and the right oblique blade on the fixed-length wire cutting blade are on the same plane, the high blade and the low blade are on the same cutting arc, and the surface of the lower knife door straight wire cutting strip matched with the fixed-length wire cutting blade is set to a plane, which can ensure that the knife door gap is consistent, thereby further ensuring the fixed-length wire cutting effect of the tobacco. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a fixed-length shredding blade;
[0019] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure in another direction;
[0020] Figure 3 for Figure 2 A schematic diagram of a local enlarged structure;
[0021] Figure 4 It is a three-dimensional structural schematic diagram of a fixed-length knife lining strip;
[0022] Figure 5 for Figure 4 A schematic diagram of a local enlarged structure;
[0023] Figure 6 It is a three-dimensional structural schematic diagram of the fixed-length shredding blade and the fixed-length knife lining strip assembly;
[0024] Figure 7 for Figure 6 A schematic diagram of the three-dimensional structure in another direction;
[0025] Figure 8 for Figure 7 A schematic diagram of a local enlarged structure;
[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the lower knife door cutting the wire strip in a straight line;
[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the lower knife door cutting wire strips in the background technology.
[0028] Explanation of the reference numerals in the figure: 1. fixed-length shredding blade, 101. groove, 102. protrusion, 103. low blade, 104. left oblique blade, 105. right oblique blade, 106. high blade, 2. fixed-length knife lining strip, 3. lower knife door straight shredding strip, 4. lower knife door shredding strip, 401. rectangular groove for shredding strip, 402. rectangular protrusion for shredding strip. DETAILED DESCRIPTION
[0029] The following is a further detailed description of the specific implementations of the present invention in conjunction with the accompanying drawings. These implementations are only used to illustrate the present invention, but not to limit the present invention.
[0030] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0032] In addition, in the description of the present invention, unless otherwise specified, “plurality” means two or more.
[0033] A fixed-length shredding device for an SD-EVO shredding machine comprises a fixed-length shredding blade 1, a plurality of grooves 101 are arranged on the bottom surface of the fixed-length shredding blade 1, each groove 101 extends and distributes along the front-rear width direction of the fixed-length shredding blade 1, a left side wall of each groove 101 is arranged obliquely toward the lower left side, and a right side wall is arranged obliquely toward the lower right side, a protrusion 102 is formed on the bottom surface of the fixed-length shredding blade 1 in the area between two adjacent grooves 101, and the protrusion 102 and the groove 101 are on the bottom surface of the fixed-length shredding blade 1 along the fixed-length shredding blade 1 The fixed-length shredder blade 1 is linearly ground by the grinding wheel on the SD-EVO shredder, and a low blade 103 is formed at the grinding end of the bottom wall of the groove 101, a left oblique blade 104 is formed at the grinding end of the left wall of the groove 101, a right oblique blade 105 is formed at the grinding end of the right wall of the groove 101, and a high blade 106 is formed at the grinding end of the protrusion 102. The high blade 106, the left oblique blade 104, the low blade 103 and the right oblique blade 105 are on the same plane, and the left and right horizontal lengths of the high blade 106 and the low blade 103 are equal. Figure 1-3 .
[0034] In this way, the form of the grinding wheel blade is adjusted from the original self-grinding to linear grinding, the grinding wheel grinding path is changed, and the grinding wheel is in a grinding state during the entire linear reciprocating motion process through the linear reciprocating motion of the grinding wheel, thereby reducing the time difference of the grinding wheel blade grinding, reducing the feeding force of the grinding wheel, reducing the difference in the extension length of the blade, and ensuring the sharpness of the blade. By manufacturing a fixed-length shredding blade 1 with multiple grooves 101 on the bottom surface, the grinding wheel can naturally form a high edge 106 and a left oblique edge 106 by utilizing the drop of the grinding wheel grinding plane during linear grinding. 04. The low blade 103 and the right bevel blade 105, when cutting the tobacco cake made of pressed tobacco, the high blade 106 and the low blade 103 are used for shredding respectively, and the left bevel blade 104 and the right bevel blade 105 are used to cut the tobacco between the high blade 106 and the low blade 103. After canceling the feed cutting action of the grinding wheel grinding, the cutting radius of the knife roller of the high blade 106 and the low blade 103 remains unchanged. In addition, the left and right horizontal lengths of the high blade 106 and the low blade 103 are equal. In this way, the purpose of cutting the tobacco into a fixed length is achieved through the cutting time difference between the high blade 106 and the low blade 103.
[0035] In one embodiment, the left side wall and the right side wall of the groove 101 have the same inclination angle, the cross section of the groove 101 is in the shape of an isosceles trapezoid, and the shape and structure of each groove 101 are the same. Figure 2 and 3 This can further ensure the fixed-length cutting effect of the tobacco.
[0036] In one embodiment, Figure 6-8The fixed-length shredding blade 1 is installed on the knife roller body of the SD-EVO shredding machine through the fixed-length knife lining strip 2. The shape and structure of the top surface of the fixed-length knife lining strip 2 are adapted to the shape and structure of the bottom surface of the fixed-length shredding blade 1. Figure 1-5 .
[0037] In one embodiment, Fig. 9 As shown, the fixed-length shredding device for the SD-EVO shredding machine also includes a lower knife gate linear shredding strip 3 that matches the fixed-length shredding blade 1. The lower knife gate linear shredding strip 3 is installed on the knife gate seat of the SD-EVO shredding machine, and the surface of the lower knife gate linear shredding strip 3 that matches the fixed-length shredding blade 1 is a plane. Since the high blade 106, the left oblique blade 104, the low blade 103 and the right oblique blade 105 on the fixed-length shredding blade 1 are on the same plane, the high blade 106 and the low blade 103 are on the same cutting arc, and the surface of the lower knife gate linear shredding strip 3 that matches the fixed-length shredding blade 1 is set to a plane, which can ensure that the knife gate gap is consistent, thereby further ensuring the fixed-length shredding effect of the tobacco.
[0038] After the fixed-length slitting blade 1 was used for test slitting, the qualified rate of slitting width was significantly improved, and the unqualified rate of slitting width was only 5%. Therefore, the unqualified rate of slitting width of the fixed-length slitting blade 1 was close to the unqualified rate of slitting width of the flat cutting blade.
[0039] After the fixed-length shredding blade 1 was used for test shredding, the fixed-length shredding effect on shredded tobacco was significantly improved, and the rate of shredded tobacco longer than 40 mm was significantly reduced. No shredded tobacco longer than 40 mm was found in the 34 shredded tobacco samples actually sampled.
[0040] After the test wire cutting using the fixed-length wire cutting blade 1, the wire wholeness rate reached 86.87%, while the wire wholeness rate of the RC5 wire cutting machine was 83%, the wire wholeness rate of the SD-EVO wire cutting machine using the self-grinding rectangular fixed-length blade was 82%, and the wire wholeness rate of the KT2 wire cutting machine was 77.37%. In addition, after the test wire cutting using the fixed-length wire cutting blade 1, the wire breakage rate dropped to 0.8%, while the wire breakage rate of the SD-EVO wire cutting machine using the self-grinding rectangular fixed-length blade was 1.13%. After the test wire cutting using the fixed-length wire cutting blade 1, the standard deviation of the wire cutting width dropped to 0.062, while the standard deviation of the wire cutting width of the SD-EVO wire cutting machine using the self-grinding rectangular fixed-length blade was 0.179. Therefore, after the test wire cutting using the fixed-length wire cutting blade 1, the standard deviation of the wire cutting width dropped by 65.3%.
[0041] After trial shredding using the fixed-length shredding blade 1, the quality indicators of shredded width and shredded tobacco length were significantly improved, and the equipment operated normally with high application safety. The fixed-length shredding blade 1 has low production cost and is worth promoting.
[0042] In the utility model, a fixed-length wire cutting blade 1 with a grinding wheel linear grinding is applied to a SD-EVO wire cutting machine to improve grinding efficiency and wire cutting quality. The grinding wheel linear grinding can reduce the force in the feeding direction of the grinding wheel and improve the stability of equipment operation.
[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.
Claims
1. A fixed-length wire cutting device for a SD-EVO wire cutting machine, characterized in that: The invention comprises a fixed-length shredding blade (1), wherein a plurality of grooves (101) are arranged on the bottom surface of the fixed-length shredding blade (1), each of the grooves (101) extending along the front-to-rear width direction of the fixed-length shredding blade (1), the left side wall of each of the grooves (101) being arranged obliquely towards the lower left side and the right side wall being arranged obliquely towards the lower right side, a protrusion (102) being formed on the bottom surface of the fixed-length shredding blade (1) in the area between two adjacent grooves (101), the protrusion (102) and the groove (101) being arranged at intervals along the left-right length direction of the fixed-length shredding blade (1) on the bottom surface of the fixed-length shredding blade (1), and the The fixed-length shredding blade (1) is linearly ground by a grinding wheel on an SD-EVO shredding machine, and a low blade (103) is formed at the grinding end of the bottom wall of the groove (101), a left oblique blade (104) is formed at the grinding end of the left wall of the groove (101), a right oblique blade (105) is formed at the grinding end of the right wall of the groove (101), and a high blade (106) is formed at the grinding end of the protrusion (102). The high blade (106), the left oblique blade (104), the low blade (103) and the right oblique blade (105) are on the same plane, and the left and right horizontal lengths of the high blade (106) and the low blade (103) are equal.
2. A fixed-length wire cutting device for a SD-EVO wire cutting machine according to claim 1, characterized in that: The inclination angles of the left side wall and the right side wall of the groove (101) are equal, and the cross section of the groove (101) is in the shape of an isosceles trapezoid.
3. A fixed-length wire cutting device for a SD-EVO wire cutting machine according to claim 2, characterized in that: The shapes and structures of the grooves (101) are the same.
4. A fixed-length wire cutting device for a SD-EVO wire cutting machine according to claim 3, characterized in that: The fixed-length shredding blade (1) is installed on the knife roller body of the SD-EVO shredding machine via a fixed-length knife lining strip (2); the shape and structure of the top surface of the fixed-length knife lining strip (2) are compatible with the shape and structure of the bottom surface of the fixed-length shredding blade (1).
5. The fixed-length wire cutting device for the SD-EVO wire cutting machine according to claim 3, characterized in that: It also includes a lower knife door straight wire cutting strip (3) that cooperates with the fixed-length wire cutting blade (1), and the lower knife door straight wire cutting strip (3) is installed on the knife door seat of the SD-EVO wire cutting machine, and the surface of the lower knife door straight wire cutting strip (3) that cooperates with the fixed-length wire cutting blade (1) is a plane.