A roller-type grinding mechanism and cutting equipment

Abstract

This utility model provides a roller-type grinding mechanism and cutting equipment, belonging to the field of cutting technology. It includes: a drive mechanism with two grinding wheels at the output end, each grinding wheel having multiple grinding sections along its axis, adjacent grinding sections connected by a connecting part; and a tool holder, positioned opposite the grinding wheels, with multiple tool holders, each corresponding to the position of the connecting part in the grinding wheel. The multiple tool holders are divided into two groups, forming a clamping gap for the cutting blade. This utility model aligns the tool holders on the tool holder with the connecting parts on the grinding wheels, ensuring that when the cutting blade is inserted into the grinding gap between the two grinding wheels, the tool holders do not first contact the grinding section with the larger outer diameter and be forced to stop. This increases the depth of the cutting blade's penetration between the two grinding wheels, thereby increasing the effective working area between the blade back and the cutting edge, and extending the cutting blade's service life.

Description

Technical Field

[0001] This utility model belongs to the field of cutting technology and relates to a grinding mechanism, particularly a roller grinding mechanism and cutting equipment. Background Technology

[0002] In the CNC cutting machine industry, the most important part of a cutting machine is the cutting head, and the most important part of the cutting head is the sharpening system. The cutting quality of the fabric and the travel speed of the cutting machine depend entirely on the sharpness of the blade. Current technology requires frequent sharpening of the blade to ensure the sharpness of the blade. However, the existing sharpening system cannot sharpen both sides of the blade at the same time when sharpening the blade, which causes the blade to deviate.

[0003] Patent application CN202211648592.9 discloses a grinding wheel and blade width measuring device for a fabric cutting equipment, including a base plate, a slide table, a motor assembly, a transmission wheel assembly, a grinding wheel assembly, a drive assembly, and a measuring assembly. The grinding wheel assembly is mounted on the slide table, which moves towards the blade under the drive assembly. The grinding wheel assembly then comes into contact with the blade. The motor assembly causes the grinding wheel assembly to rotate through the transmission wheel assembly. The measuring plate moves with the slide table, and the ramp on the measuring plate moves with the slide table, bringing the ramp closer to the sensor unit. When the grinding wheel assembly comes into contact with the blade edge, the distance between the ramp and the sensor unit no longer changes. The sensor unit detects this distance and converts it into actual grinding compensation data, thus quickly obtaining the actual blade width data.

[0004] In the existing technology, although the use of a double-roller grinding tool is disclosed, the clamping structure of the cutting tool is not disclosed. How the clamping structure clamps the cutting tool will affect the depth of the cutting tool into the grinding wheel set, and further affect the service life of the cutting tool. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a roller-type grinding mechanism that can increase the grinding depth of cutting blades and extend their service life.

[0006] The objective of this utility model can be achieved through the following technical solution: a roller-type grinding mechanism, comprising:

[0007] The drive mechanism has two grinding wheels with parallel axes at its output end, namely the first grinding wheel and the second grinding wheel. Each grinding wheel has multiple grinding sections along its axis. Adjacent grinding sections are connected by a connecting section. On the same horizontal plane, the grinding section of the first grinding wheel corresponds to the connecting section of the second grinding wheel, and the connecting section of the first grinding wheel corresponds to the grinding section of the second grinding wheel. The outer diameter of the grinding section is larger than the outer diameter of the connecting section.

[0008] A tool holder is arranged opposite to the grinding wheel. Multiple tool clamping parts are arranged on the side of the tool holder facing the grinding wheel and along the length of the tool holder. The position of each tool clamping part corresponds to the position of the connecting part in the grinding wheel. The multiple tool clamping parts are divided into two groups, namely the first tool clamping group and the second tool clamping group, and a clamping gap for the cutting tool is formed between the first tool clamping group and the second tool clamping group.

[0009] In the aforementioned double-roller grinding mechanism, the clamping parts in the first clamping set and the clamping parts in the second clamping set are spaced apart along the length of the clamping seat, and the position of the clamping part in the first clamping set corresponds to the position of the connecting part on one of the two grinding wheels, and the position of the clamping part in the second clamping set corresponds to the position of the connecting part on the other grinding wheel.

[0010] In the aforementioned roller grinding mechanism, the multiple clamping parts on the tool holder are arranged at non-equidistant distances, and the clamping parts in the first tool holder group and the clamping parts in the second tool holder group are paired up to form a pair of clamping parts. The clamping gap is located between each pair of clamping parts, and the position of one clamping part in each pair of clamping parts corresponds to the position of the connecting part on one of the two grinding wheels, and the position of the other clamping part corresponds to the position of the connecting part on the other of the two grinding wheels.

[0011] In the aforementioned roller-type grinding mechanism, the tool holder includes a base 220. One end of the tool holder is connected to the tool holder, and the other end of the tool holder is provided with a stepped portion. The stepped portion includes a first stepped surface and a second stepped surface. The first stepped surface is in contact with the surface of the back of the cutting tool, and the second stepped surface abuts against the end face of the back of the cutting tool. The first stepped surfaces on two adjacent tool holders are arranged opposite to each other, and the second stepped surfaces on two adjacent tool holders are arranged vertically along the length of the tool holder.

[0012] In the aforementioned roller-type grinding mechanism, the sum of the thicknesses of all grinding sections of the first grinding wheel along the axial direction is L1, the sum of the thicknesses of all grinding sections of the second grinding wheel along the axial direction is L2, and the preset grinding length of the cutting blade along the length direction is L, wherein the sum of L1 and L2 is not greater than L.

[0013] In the aforementioned roller-type grinding mechanism, the drive mechanism includes:

[0014] A knife sharpening support, comprising a first support plate arranged horizontally and a second support plate arranged vertically;

[0015] A drive cylinder is used, and the output end of the drive cylinder is connected to the first support plate through the grinding cylinder bracket. The drive cylinder drives the grinding bracket to move, so that the two grinding wheels move closer to or further away from the cutting blade.

[0016] A drive motor is mounted on a second support plate. The output end of the drive motor is provided with two drive pulleys, wherein the axes of the two drive pulleys are collinear.

[0017] The grinding wheel support is movably connected to the second support plate. The two ends of the two grinding wheels are respectively connected to the two sides of the open end of the grinding wheel support. A driven pulley is provided at one end of each grinding wheel, and each driven pulley is connected to the driving pulley on the corresponding side by an annular belt. The two grinding wheels are driven to rotate synchronously in opposite directions by a drive motor through the driving pulley, the annular belt and the driven pulley.

[0018] In the aforementioned roller grinding mechanism, a guide structure is also provided between the second support plate and the grinding wheel bracket. The guide structure includes a wheel axle bracket connected to the second support plate, and a first guide wheel connected to each end of the wheel axle bracket by fasteners; a guide wheel axle connected to the grinding wheel bracket, and a second guide wheel connected to each end of the guide wheel axle by fasteners. The axial direction of the first guide wheel is perpendicular to the axial direction of the second guide wheel. The axial direction of the first guide wheel is parallel to the axial direction of the driven pulley, and the axial direction of the second guide wheel is parallel to the axial direction of the driving pulley. The two sides of the annular belt are tangent to the first guide wheel and the second guide wheel, respectively.

[0019] In the aforementioned roller grinding mechanism, a leveling structure is provided between the second support plate and the grinding wheel. This leveling structure includes adjustment parts located at various points on the closed end of the grinding wheel support, and a ball joint connecting rod with one end connected to one of the second support plate or the grinding wheel support and the other end rotatably connected to the other end of the second support plate or the grinding wheel support. The adjustment part includes an adjustment rod with one end passing through the second support plate and connected to the grinding wheel support; and an adjustment nut rotatably connected to the adjustment rod, which locks the current position.

[0020] In the aforementioned roller-type grinding mechanism, the drive mechanism includes a grinding tool mounting plate, and the grinding tool mounting plate is connected to the grinding tool support via a sliding structure.

[0021] This utility model also provides a cutting device, including the aforementioned roller-type grinding mechanism.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] (1) The present invention provides a roller-type grinding mechanism, which aligns the clamping part on the clamping holder for holding the cutting knife with the connecting part on the grinding wheel. This makes it so that when the cutting knife is inserted into the grinding gap between the two grinding wheels, the clamping part will not be forced to stop by contacting the grinding part with the larger outer diameter first, but will stop when it approaches the connecting part with the smaller outer diameter. This increases the depth of the cutting knife blade into the gap between the two grinding wheels, thereby increasing the effective working area between the back of the cutting knife and the cutting edge, and extending the service life of the cutting knife.

[0024] (2) The reason why the clamping parts on the first clamping knife group and the second clamping knife group are spaced apart along the length of the clamping knife seat is that, on the one hand, it can increase the contact area between the clamping knife seat and the cutting knife, and on the other hand, the position of the clamping part corresponds to the position of the connecting part and does not interfere with the position of the grinding part.

[0025] (3) The first stepped surface is in contact with the surface of the back of the cutting blade, thereby increasing the contact area between the clamping part and the cutting blade, thus improving the clamping reliability of the clamping part for the cutting blade. The second stepped surface is in contact with the end face of the back of the cutting blade, thereby controlling the depth of the cutting blade clamped on the clamping seat, reserving the maximum effective cutting width on the cutting blade, and avoiding the two grinding wheels from over-grinding the width of the cutting blade, which would cause the clamping part to be unable to clamp the cutting blade and cause the cutting blade to slip off, thus improving the reliability of the cutting blade. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a roller-type grinding mechanism according to this utility model.

[0027] Figure 2 This is a schematic diagram of the structure of the clamping tool holder in a preferred embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the drive mechanism in a preferred embodiment of the present invention.

[0029] Figure 4 yes Figure 3 A schematic diagram of the drive mechanism from another perspective.

[0030] Figure 5 yes Figure 4 The drive mechanism shown is a cross-sectional view along section line AA.

[0031] In the picture,

[0032] 100. Drive mechanism; 110. Grinding wheel; 111. Sharpening section; 112. Connecting part; 120. Sharpening bracket; 121. First support plate; 122. Second support plate; 130. Drive cylinder; 131. Sharpening cylinder bracket; 140. Drive motor; 141. Driving pulley; 142. Driven pulley; 143. Annular belt; 144. Wheel and axle bracket; 145. First guide wheel; 146. Guide wheel shaft; 147. Second guide wheel; 150. Grinding wheel bracket; 160. Leveling structure; 161. Ball joint connecting rod; 162. Adjusting rod; 163. Adjusting nut; 170. Sharpening mounting plate; 180. Sliding structure;

[0033] 200. Tool holder; 210. Tool clamping part; 211. First stepped surface; 212. Second stepped surface; 220. Base body;

[0034] 300, cutting blade; 310, back of blade; 320, blade edge. Detailed Implementation

[0035] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] like Figures 1 to 5 As shown, the present invention provides a roller-type grinding mechanism, comprising:

[0038] The drive mechanism 100 has two grinding wheels 110 with parallel axes at its output end, namely the first grinding wheel and the second grinding wheel. Each grinding wheel 110 has multiple grinding sections 111 along its axis. Adjacent grinding sections 111 are connected by a connecting section 112. On the same horizontal plane, the grinding section 111 of the first grinding wheel corresponds to the connecting section 112 of the second grinding wheel, and the connecting section 112 of the first grinding wheel corresponds to the grinding section 111 of the second grinding wheel. The outer diameter of the grinding section 111 is larger than the outer diameter of the connecting section 112.

[0039] The tool holder 200 is disposed opposite to the grinding wheel 110. Multiple tool clamping parts 210 are disposed on the side of the tool holder 200 facing the grinding wheel 110 and along the length of the tool holder 200. The position of each tool clamping part 210 corresponds to the position of the connecting part 112 in the grinding wheel 110. The multiple tool clamping parts 210 are divided into two groups, namely the first tool clamping group and the second tool clamping group, and a clamping gap for the cutting tool 300 is formed between the first tool clamping group and the second tool clamping group.

[0040] It is worth mentioning that, under normal conditions, when the cutting blade 300 is clamped on the tool holder 200, the back of the cutting blade 300 310 faces the tool holder 200; when the cutting blade 300 needs to be sharpened, the cutting edge 320 of the cutting blade 300 faces the grinding wheel 110. Under the action of the drive mechanism 100, the two grinding wheels 110 slowly approach the cutting edge 320 of the cutting blade 300, so that the cutting edge 320 of the cutting blade 300 is inserted between the two grinding wheels 110. Because the tool holder 200... The clamping part 210 on the 0 corresponds to the connecting part 112 of the grinding wheel 110, so that when the cutting edge 320 of the cutting blade 300 enters between the two grinding wheels 110, the clamping part 210 and the grinding part 111 of the grinding wheel 110 are prevented from interfering. This increases the depth of the cutting edge 320 of the cutting blade 300 entering between the two grinding wheels 110, thereby increasing the effective working area between the back of the cutting blade 310 and the cutting edge 320 on the cutting blade 300 and extending the service life of the cutting blade 300.

[0041] The present invention provides a roller-type grinding mechanism in which the clamping part 210 on the clamping holder 200 for holding the cutting blade 300 corresponds to the connecting part 112 on the grinding wheel 110. This ensures that when the cutting blade 300 is inserted into the grinding gap between the two grinding wheels 110, the clamping part 210 will not first come into contact with the grinding part 111 with the larger outer diameter and be forced to stop. Instead, it will stop when it approaches the connecting part 112 with the smaller outer diameter. This increases the depth to which the cutting edge 320 of the cutting blade 300 enters between the two grinding wheels 110, thereby increasing the effective working area between the back of the blade 310 and the cutting edge 320 of the cutting blade 300 and extending the service life of the cutting blade 300.

[0042] Furthermore, the clamping parts 210 in the first clamping tool group and the clamping parts 210 in the second clamping tool group are arranged at intervals along the length direction of the clamping tool holder 200, and the position of the clamping part 210 in the first clamping tool group corresponds to the position of the connecting part 112 on one of the two grinding wheels 110, and the position of the clamping part 210 in the second clamping tool group corresponds to the position of the connecting part 112 on the other grinding wheel 110.

[0043] It is worth mentioning that, since the clamping part 210 can extend into the corresponding connecting part 112, the width of the clamping part 210 along the length direction of the clamping base 200 is smaller than the width along the axial direction of the connecting part 112. Since the clamping part 210 is a structure for clamping the cutting blade 300, the contact area between each clamping part 210 and the cutting blade 300 is small. Overall, the clamping base 200 and the cutting blade 300 are fixed-point contact clamped.

[0044] In this embodiment, the reason why the clamping parts 210 on the first clamping knife group and the second clamping knife group are spaced apart along the length direction of the clamping knife seat 200 is that, on the one hand, it can increase the contact area between the clamping knife seat 200 and the cutting knife 300, and on the other hand, the clamping parts 210 correspond to the position of the connecting part 112 while not interfering with the position of the grinding part 111.

[0045] Furthermore, since the grinding portion 111 of one of the two grinding wheels 110 on the same horizontal plane corresponds to the connecting portion 112 of the other grinding wheel 110, the maximum outer circumferential surfaces of the two grinding wheels 110, i.e., the circumferential surface where the grinding portion 111 is located, intersect. In other words, the distance between the axes of the two grinding wheels 110 is less than the sum of the radii of the maximum outer circumferential surfaces of the two grinding wheels 110.

[0046] Preferably, the multiple clamping parts on the tool holder 200 are arranged at non-equidistant distances, and the clamping parts 210 in the first tool holder group and the clamping parts 210 in the second tool holder group are paired to form a pair of clamping parts 210. The clamping gap is located between each pair of clamping parts 210, and the position of one clamping part 210 in each pair of clamping parts 210 corresponds to the position of the connecting part 112 on one of the two grinding wheels 110, and the position of the other clamping part 210 corresponds to the position of the connecting part 112 on the other of the two grinding wheels 110.

[0047] It should be noted that while a greater number of clamping parts 210 improves the reliability of clamping the cutting blade 300, it also increases the cost of the clamping holder 200. This is because the cutting blade 300 vibrates at high frequency during operation, causing wear on the clamping holder 200 support. Therefore, the clamping holder 200 is a consumable part that requires periodic replacement. Increasing the number of clamping parts 210 on the clamping holder 200 increases the overall replacement cost. However, the number of clamping parts 210 cannot be too small, otherwise the cutting blade 300 will not be properly clamped. Inability to reliably clamp the cutting blade 300 can not only damage it and reduce cutting quality, but could even lead to serious accidents. Therefore, to ensure reliable clamping of the cutting blade 300 without significantly increasing the replacement cost of the clamping holder 200, the multiple clamping parts on the clamping holder 200 are divided into multiple pairs of clamping parts 210. Each pair of clamping parts 210 corresponds to the position of the connecting part 112 on the corresponding grinding wheel 110. The distance between two adjacent pairs of clamping parts 210 is greater than the distance between the two clamping parts 210 in each pair. This ensures reliable clamping of the cutting blade 300 while reducing the number of clamping parts 210 and lowering the overall replacement cost of the clamping holder 200.

[0048] It is worth mentioning that the distance between two adjacent clamping parts 210 in the first clamping knife group is equal, the distance between two adjacent clamping parts 210 in the second clamping knife group is equal, and the distance between two adjacent pairs of clamping parts 210 is equal.

[0049] Preferably, the blade holder 200 includes a base 220, one end of the blade clamping part 210 is connected to the blade holder, and the other end of the blade clamping part 210 is provided with a stepped part, which includes a first stepped surface 211 and a second stepped surface 212. The first stepped surface 211 is in contact with the surface of the back of the cutting blade 300 310, and the second stepped surface 212 is in contact with the end face of the back of the cutting blade 300 310. The first stepped surfaces 211 on two adjacent blade clamping parts 210 are arranged opposite to each other, and the second stepped surfaces 212 on two adjacent blade clamping parts 210 are arranged vertically along the length of the blade holder 200.

[0050] In this embodiment, the first stepped surface 211 is in contact with the surface of the back of the cutting blade 310 of the cutting blade 300, thereby increasing the contact area between the clamping part 210 and the cutting blade 300, thus improving the clamping reliability of the clamping part 210 for the cutting blade 300. The second stepped surface 212 abuts against the end face of the back of the cutting blade 310 of the cutting blade 300, thereby controlling the depth of the cutting blade 300 clamped on the clamping seat 200, reserving the maximum effective cutting width on the cutting blade 300, and avoiding excessive grinding of the cutting blade 320 width by the two grinding wheels 110, which would cause the clamping part 210 to fail to clamp the cutting blade 300 and cause the cutting blade 300 to slip off, thus improving the reliability of the cutting blade 300 in use.

[0051] Preferably, the sum of the thicknesses of all the grinding portions 111 along the axial direction of the first grinding wheel is L1, the sum of the thicknesses of all the grinding portions 111 along the axial direction of the second grinding wheel is L2, and the preset grinding length of the cutting blade 300 along the length direction is L, wherein the sum of L1 and L2 is not greater than L.

[0052] It is worth mentioning that when the sum of L1 and L2 is equal to L, the cutting blade 300 does not need to move along the axial direction. It can simply bring the two grinding wheels 110 close to the cutting edge 320 of the cutting blade 300 for grinding. When the sum of L1 and L2 is less than L, the position of the cutting blade 300 is first lowered so that the plane at the top of the preset grinding area on the cutting blade 300 is not higher than the plane at the top of the grinding part 111 of the two grinding wheels 110. Then, the two grinding wheels 110 are brought close to the cutting edge 320 of the cutting blade 300 for grinding. After the preset grinding area corresponding to the grinding wheel 110 is ground, the position of the cutting blade 300 is adjusted again so that the cutting blade 300 moves upward. During the upward movement, the cutting blade 300 will continue to contact and grind with the grinding wheel 110, thereby making up for the area that was not ground before, and finally completing the preset grinding length of the cutting blade 300.

[0053] Preferably, the drive mechanism 100 includes:

[0054] A T-shaped sharpening bracket 120 includes a horizontally arranged first support plate 121 and a vertically arranged second support plate 122.

[0055] Drive cylinder 130, and the output end of drive cylinder 130 is connected to the first support plate 121 through grinding cylinder bracket 131. Drive cylinder 130 drives grinding bracket 120 to move, so that the two grinding wheels 110 are close to or away from cutting blade 300.

[0056] A drive motor 140 is mounted on a second support plate 122. The output end of the drive motor 140 is provided with two drive pulleys 141, wherein the axes of the two drive pulleys 141 are collinear.

[0057] A C-shaped grinding wheel support 150 is movably connected to a second support plate 122. The two ends of two grinding wheels 110 are respectively connected to the two sides of the open end of the grinding wheel support 150. A driven pulley 142 is provided at one end of each grinding wheel 110, and each driven pulley 142 is connected to the corresponding driving pulley 141 via an annular belt 143. The two grinding wheels 110 are driven to rotate synchronously in opposite directions by a drive motor 140 via the driving pulley 141, the annular belt 143, and the driven pulley 142.

[0058] It is worth mentioning that the driving pulley 141 can rotate in a vertical plane, and the driven pulley 142 can rotate in a horizontal plane. The axial direction of the driving pulley 141 is perpendicular to the axial direction of the driven pulley 142.

[0059] It is further noted that the two sides of the open end of the grinding wheel bracket 150 are detachably connected to the closed end, which facilitates the disassembly, assembly, and replacement of the grinding wheel 110.

[0060] Preferably, a guide structure is further provided between the second support plate 122 and the grinding wheel bracket 150. The guide structure includes a wheel axle bracket 144 connected to the second support plate 122, and a first guide wheel 145 connected to each end of the wheel axle bracket 144 by fasteners; a guide wheel shaft 146 connected to the grinding wheel bracket 150, and a second guide wheel 147 connected to each end of the guide wheel shaft 146 by fasteners. The axial direction of the first guide wheel 145 is perpendicular to the axial direction of the second guide wheel 147. The axis of the first guide wheel 145 is parallel to the axis of the driven pulley 142, and the axis of the second guide wheel 147 is parallel to the axis of the driving pulley 141. The two sides of the annular belt 143 are tangent to the first guide wheel 145 and the second guide wheel 147, respectively.

[0061] Preferably, a leveling structure 160 is provided between the second support plate 122 and the grinding wheel 110, such that the vertical plane formed by the axes of the two grinding wheels 110 is parallel to the axis of the drive pulley 141. The leveling structure 160 includes adjusting parts provided on various parts of the closed end of the grinding wheel bracket 150, and a ball joint connecting rod 161 with one end connected to one of the second support plate 122 or the grinding wheel bracket 150 and the other end rotatably connected to the other end of the second support plate 122 or the grinding wheel bracket 150. The adjusting part includes an adjusting rod 162, one end of which passes through the second support plate 122 and is connected to the grinding wheel bracket 150; and an adjusting nut 163, which is rotatably connected to the adjusting rod 162. After the relative position between the second support plate 122 and the grinding wheel bracket 150 is adjusted, the current position is locked by the adjusting nut 163.

[0062] Preferably, the drive mechanism 100 includes a grinding tool mounting plate 170, and the grinding tool mounting plate 170 is connected to the grinding tool support 120 through a sliding structure 180 to achieve straightness when the drive cylinder 130 drives the grinding tool support 120 to move.

[0063] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0065] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A roller-type grinding mechanism, characterized in that, include: The drive mechanism has two grinding wheels with parallel axes at its output end, namely the first grinding wheel and the second grinding wheel. Each grinding wheel has multiple grinding sections along its axis. Adjacent grinding sections are connected by a connecting section. On the same horizontal plane, the grinding section of the first grinding wheel corresponds to the connecting section of the second grinding wheel, and the connecting section of the first grinding wheel corresponds to the grinding section of the second grinding wheel. The outer diameter of the grinding section is larger than the outer diameter of the connecting section. A tool holder is arranged opposite to the grinding wheel. Multiple tool clamping parts are arranged on the side of the tool holder facing the grinding wheel and along the length of the tool holder. The position of each tool clamping part corresponds to the position of the connecting part in the grinding wheel. The multiple tool clamping parts are divided into two groups, namely the first tool clamping group and the second tool clamping group, and a clamping gap for the cutting tool is formed between the first tool clamping group and the second tool clamping group.

2. The pair of roller knife sharpening mechanism according to claim 1, wherein The clamping parts in the first clamping tool group and the clamping parts in the second clamping tool group are spaced apart along the length of the clamping tool holder. The position of the clamping part in the first clamping tool group corresponds to the position of the connecting part on one of the two grinding wheels, and the position of the clamping part in the second clamping tool group corresponds to the position of the connecting part on the other grinding wheel.

3. The pair of roller knife sharpening mechanism according to claim 1, wherein The multiple clamping parts on the tool holder are arranged at non-equidistant distances, and the clamping parts in the first tool holder group and the clamping parts in the second tool holder group are paired up to form a pair of clamping parts. The clamping gap is located between each pair of clamping parts, and the position of one clamping part in each pair of clamping parts corresponds to the position of the connecting part on one of the two grinding wheels, and the position of the other clamping part corresponds to the position of the connecting part on the other of the two grinding wheels.

4. The pair of roller knife sharpening mechanism according to claim 1, wherein The tool holder includes a base body, one end of the tool clamping part is connected to the tool holder, and the other end of the tool clamping part is provided with a stepped part, which includes a first stepped surface and a second stepped surface. The first stepped surface is in contact with the surface of the back of the cutting tool, and the second stepped surface is in contact with the end face of the back of the cutting tool. The first stepped surfaces on two adjacent tool clamping parts are arranged opposite to each other, and the second stepped surfaces on two adjacent tool clamping parts are arranged vertically along the length direction of the tool holder.

5. The pair of roller sharpening mechanism according to claim 1, wherein The sum of the thicknesses of all the grinding portions of the first grinding wheel along the axial direction is L1, the sum of the thicknesses of all the grinding portions of the second grinding wheel along the axial direction is L2, and the preset grinding length of the cutting blade along the length direction is L, wherein the sum of L1 and L2 is not greater than L.

6. A pair of grinding rolls according to any one of claims 1 to 5, characterized in that The drive mechanism includes: A knife sharpening support, comprising a first support plate arranged horizontally and a second support plate arranged vertically; A drive cylinder is used, and the output end of the drive cylinder is connected to the first support plate through the grinding cylinder bracket. The drive cylinder drives the grinding bracket to move, so that the two grinding wheels move closer to or further away from the cutting blade. A drive motor is mounted on a second support plate. The output end of the drive motor is provided with two drive pulleys, wherein the axes of the two drive pulleys are collinear. The grinding wheel support is movably connected to the second support plate. The two ends of the two grinding wheels are respectively connected to the two sides of the open end of the grinding wheel support. A driven pulley is provided at one end of each grinding wheel, and each driven pulley is connected to the driving pulley on the corresponding side by an annular belt. The two grinding wheels are driven to rotate synchronously in opposite directions by a drive motor through the driving pulley, the annular belt and the driven pulley.

7. The pair of roller sharpening mechanism according to claim 6, wherein A guide structure is also provided between the second support plate and the grinding wheel bracket. The guide structure includes a wheel axle bracket connected to the second support plate, and a first guide wheel connected to each end of the wheel axle bracket by fasteners; a guide wheel axle connected to the grinding wheel bracket, and a second guide wheel connected to each end of the guide wheel axle by fasteners. The axial direction of the first guide wheel is perpendicular to the axial direction of the second guide wheel. The axial direction of the first guide wheel is parallel to the axial direction of the driven pulley, and the axial direction of the second guide wheel is parallel to the axial direction of the driving pulley. The two sides of the annular belt are tangent to the first guide wheel and the second guide wheel, respectively.

8. The pair of knife sharpening mechanism according to claim 6, wherein A leveling structure is provided between the second support plate and the grinding wheel. The leveling structure includes adjusting parts provided on various parts of the closed end of the grinding wheel support, and a ball joint connecting rod with one end connected to one of the second support plate or the grinding wheel support and the other end rotatably connected to the other end of the second support plate or the grinding wheel support. The adjusting part includes an adjusting rod with one end passing through the second support plate and connected to the grinding wheel support; and an adjusting nut rotatably connected to the adjusting rod, which locks the current position.

9. The pair of knife sharpening mechanism according to claim 6, wherein The drive mechanism includes a grinding tool mounting plate, which is connected to the grinding tool support via a sliding structure.

10. A cutting apparatus characterized by, Includes the roller-type grinding mechanism as described in any one of claims 1 to 9.

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