A multi-directional grinding apparatus for a circular saw blade

Abstract

The application relates to a multi-directional grinding device for a disc saw blade, which comprises a rack, a transfer structure, a main grinding structure, a secondary grinding structure and a tooth pushing structure. The transfer structure is used for transferring the saw blade between the main grinding structure and the secondary grinding structure, the main grinding structure and the secondary grinding structure are used for multi-directional grinding of the saw blade, and the tooth pushing structure is arranged on one side of the main grinding structure and the secondary grinding structure and used for pushing the saw blade to rotate during grinding. The multi-directional grinding device for the disc saw blade integrates the main grinding structure and two groups of secondary grinding structures in the same rack, and realizes automatic transfer of the saw blade between grinding stations by cooperating with the transfer structure. Compared with the dispersed operation mode of sequentially processing by three independent devices in the prior art, the application significantly reduces the auxiliary waiting time and feeding and discharging time between processes, greatly improves the processing rhythm and overall efficiency of batch production.

Description

Technical Field

[0001] This invention belongs to the field of saw blade grinding technology, specifically relating to a multi-directional grinding device for circular saw blades. Background Technology

[0002] In the manufacturing process of circular saw blades, the grinding of the saw teeth is a crucial step that determines the cutting performance and service life of the blade. Typically, the outer circumference and both sides of the saw blade need to be ground separately to ensure the sharpness of the saw teeth. However, in current technology, the grinding of circular saw blades generally employs a decentralized process. Specifically, the grinding of circular saw blades needs to be completed sequentially on three independent grinding machines and transferred between them.

[0003] This decentralized grinding method has obvious shortcomings: Firstly, the processing efficiency is low: the saw blade is transferred multiple times between different devices, and each transfer is accompanied by auxiliary actions such as loading and unloading, handling and re-clamping, which takes a long time and seriously restricts the cycle time of mass production, making it difficult to meet the needs of high-efficiency production.

[0004] Secondly, the positioning accuracy is severely compromised: each time the saw blade is moved and re-clamped by the equipment, new positioning errors are introduced. It is difficult to maintain a high degree of consistency in the positioning benchmarks between multiple machines, and the accumulated errors eventually lead to uneven grinding allowance on both sides of the saw teeth, affecting the consistency of the cutting edge geometry and the finished quality of the saw blade.

[0005] Third, the equipment occupies a large area and incurs high labor costs: placing multiple machines side by side requires a significant amount of factory space. Furthermore, the transfer and connection between different processes require considerable manual intervention, increasing the labor intensity of operators and the company's labor costs. Summary of the Invention

[0006] This invention provides a multi-directional grinding device for circular saw blades, which solves the problems of low processing efficiency and serious loss of positioning accuracy caused by the need for sequential transfer between multiple independent devices and multiple clamping and positioning in existing circular saw blade grinding.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a multi-directional grinding device for circular saw blades, comprising: frame; The transfer structure includes a transfer head for picking up a single saw blade, a positioning mechanism disposed inside the frame and positioning the saw blade picked up by the transfer head, and a transfer head for picking up and transferring the positioned saw blade. The main grinding structure includes a main grinding frame that can be lifted and lowered within the frame, a main slide plate that can move synchronously towards or away from each other on one side of the main grinding frame, and a main grinding assembly disposed at the bottom of the main slide plate. A secondary grinding structure, comprising a secondary grinding frame disposed inside the frame, a secondary grinding wheel mounting frame rotatably mounted on one side of the secondary grinding frame, and a secondary grinding wheel disposed on one side of the secondary grinding wheel mounting frame; The pusher structure includes a pusher frame movably disposed within the frame, a limiting plate fixed to one side of the pusher frame and spaced apart, a limiting groove formed between the limiting plates, a pusher plate rotatably mounted between the limiting plates, and a lever fixed to one side of the pusher plate for moving the saw blade.

[0008] Optimally, the main grinding assembly includes a gearbox disposed on one side of the main slide plate, a main gear and a secondary gear rotatably mounted in the gearbox and meshing with each other, a grinding shaft connected to the secondary gear, a grinding wheel mounted at the bottom of the grinding shaft, and a shaft guard mechanism disposed at the bottom of the gearbox and sleeved on the outside of the grinding shaft.

[0009] Optimally, the pusher structure further includes a connecting plate integrally connected to the bottom of the limiting plate, a first shaft hole penetrating the limiting plate, a second shaft hole penetrating the pusher plate and coaxially arranged with the first shaft hole, a connecting shaft passing through the first shaft hole and the second shaft hole, and a pusher cylinder connected between the pusher plate and the connecting plate.

[0010] Optimally, the main grinding structure further includes a saw blade mounting mechanism, a support frame movably disposed on one side of the saw blade mounting mechanism, and a support head fixed to the support frame on the side near the saw blade mounting mechanism.

[0011] Optimally, the main grinding structure further includes a lead screw mounting seat fixed to one side of the main grinding frame and spaced apart, a first lead screw and a second lead screw rotatably mounted inside the lead screw mounting seat, and a connecting sleeve for connecting the first lead screw and the second lead screw. The main slide plate is respectively mounted on the first lead screw and the second lead screw, and the first lead screw and the second lead screw have opposite rotation directions.

[0012] Optimally, the transfer head includes a main electromagnet, a mounting sleeve fixed to the outside of the main electromagnet, a pressure sleeve floating outside the mounting sleeve, a pressure block surrounding one side of the pressure sleeve, and a nozzle disposed outside the pressure sleeve.

[0013] Optimally, the transfer head further includes an outer extension plate integrally connected to the outside of the mounting sleeve, an inner extension plate disposed on the inside of the pressure sleeve, an outer spring groove formed on one side of the outer extension plate, an inner spring groove formed on one side of the inner extension plate, and a spring disposed between the outer spring groove and the inner spring groove.

[0014] Optimally, the shaft protection mechanism includes a limiting cylinder, an upper sealing groove formed at the top of the limiting cylinder, a lower sealing groove formed at the bottom of the limiting cylinder, an oil groove circumferentially disposed on the inner side of the limiting cylinder, an oil drain groove formed on the inner side wall of the limiting cylinder and connected to the oil groove, an oil inlet hole penetrating the limiting cylinder and connected to the oil groove, and an oil drain hole penetrating the limiting cylinder and connected to the oil drain groove.

[0015] Ideally, the oil trough includes a main oil trough and a secondary oil trough that are formed on the inner side wall of the limiting cylinder and are interconnected, as well as an oil baffle surface that is inclinedly arranged on one side of the secondary oil trough.

[0016] Optimally, the transfer head further includes a clearance groove circumferentially disposed on the side wall of the pressure sleeve, a guide rod circumferentially disposed on the outside of the mounting sleeve and penetrating the clearance groove, an anti-detachment block fixed on the outside of the guide rod, and a pad fixed on one side of the pressure block.

[0017] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: This invention relates to a multi-directional grinding device for circular saw blades. It integrates the main grinding structure and two sets of auxiliary grinding structures within a single frame, and utilizes a transfer structure to automatically transfer the saw blade between grinding stations. The saw blade can complete all multi-directional grinding processes sequentially on a single machine, requiring no manual intervention or transfer / re-clamping between different devices. Compared to the existing decentralized operation method that requires three independent machines for sequential processing, this invention significantly reduces auxiliary waiting time and loading / unloading time between processes, greatly improving the processing cycle time and overall efficiency of mass production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the saw blade structure; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the transfer structure of the present invention; Figure 4 This is a schematic diagram of the main grinding structure of the present invention; Figure 5 For the present invention Figure 4 A sectional view; Figure 6 This is a schematic diagram of the secondary grinding structure of the present invention; Figure 7 This is a partial structural diagram of the secondary grinding structure of the present invention; Figure 8 This is a schematic diagram of the pusher tooth structure of the present invention; Figure 9 This is a cross-sectional view of the transfer head in the transfer structure of the present invention; Figure 10 This is a cross-sectional view of the shaft guarding mechanism in the main grinding structure of the present invention; Figure 11 This is a cross-sectional view of the shaft guarding mechanism in the main grinding structure of the present invention from another angle; Figure 12 This is a simplified schematic diagram of the pusher tooth structure of the present invention; Figure 13 This is a simplified schematic diagram of a partial structure of the pusher tooth structure of the present invention; Figure 14 This is a simplified schematic diagram of a partial structure of the pusher tooth structure of the present invention; Figure 15 This is a cross-sectional view of the push plate in the pusher tooth structure of the present invention; Figure 16 This is a cross-sectional view of the push plate in the pusher tooth structure of the present invention; Explanation of reference numerals in the attached figures: 1. Transfer structure; 100. Three-axis drive mechanism; 101. First shelf; 102. First shelf rod; 103. Second shelf; 104. Second shelf rod; 105. Positioning post; 106. Camera; 107. Main electromagnet; 108. Mounting sleeve; 109. Outer extension plate; 110. Pressure sleeve; 111. Inner extension plate; 112. Outer spring groove; 113. Inner spring groove; 114. Spring; 115. Clearance groove; 116. Guide rod; 117. Anti-detachment block; 118. Pressure block; 119. Pad block; 120. Connecting frame; 121. Nozzle; 122. Secondary electromagnet; 2. Main grinding structure; 200. Main grinding frame; 201. Lead screw mounting base; 202. Drive motor; 203. First lead screw; 204. Second lead screw; 205. Connecting sleeve; 206. Main slide plate; 207. Gearbox; 208. Grinding motor; 209. Main gear; 210. Secondary gear; 211. Grinding wheel; 212. Support frame; 213. Support head; 214. Saw blade mounting mechanism; 215. Limiting cylinder; 216. Shaft groove; 217. Upper sealing groove; 218. Lower sealing groove; 219. Main oil groove; 220. Secondary oil groove; 221. Oil baffle surface; 222. Oil inlet hole; 223. Oil drain groove; 224. Oil drain hole; 225. Transfer mounting mechanism; 226. Grinding shaft; 3. Secondary grinding structure; 300. Secondary grinding frame; 301. Mounting frame; 302. Mounting disc; 303. Drive shaft; 304. Drive disc; 305. Drive belt; 306. Drive mechanism; 307. Secondary grinding wheel mounting frame; 308. Secondary grinding wheel; 4. Pushing tooth structure; 400. Pushing tooth frame; 401. Pushing tooth fixing plate; 402. Adjustment groove; 403. First clamping plate; 404. First clamping groove; 405. Second clamping plate; 406. Second clamping groove; 407. First fixing hole; 408. Connecting rod; 409. Sleeve; 410. Mounting hole; 411. Second fixing hole; 412. Limiting plate; 413. Connecting plate; 414. Push plate; 415. Lever; 416. First shaft hole; 417. Second shaft hole; 418. Through hole; 419. Third fixing hole; 420. Fixing screw; 421. Pushing cylinder; 422. Connecting shaft; 500, saw blade; 501, saw edge. Detailed Implementation

[0019] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0020] like Figure 2 As shown, the present invention provides a multi-directional grinding device for circular saw blades, used for grinding... Figure 1 The saw blade 500 is ground using a grinding device comprising a transfer structure 1, a main grinding structure 2, a secondary grinding structure 3, and a pusher tooth structure 4. The transfer structure 1, main grinding structure 2, secondary grinding structure 3, and pusher tooth structure 4 are all installed inside a frame welded from aluminum profiles. The transfer structure 1 is positioned above the main grinding structure 2 and secondary grinding structure 3, used to transfer the saw blade 500 between them. Multiple sets of pusher tooth structures 4 are respectively positioned on one side of the main grinding structure 2 and secondary grinding structure 3, pushing the saw blade 500 to rotate during grinding, thereby completing the grinding of the saw blade edge 501 on the outer circumference of the saw blade 500 (specifically, as shown in the image). Figure 1 As shown, the saw blade 501 is welded to the outer circumferential surface of the saw blade 500. The saw blade 501 has two first grinding surfaces arranged opposite each other, and a second grinding surface and a third grinding surface respectively connected to the two first grinding surfaces. The main grinding structure is used to grind the two first grinding surfaces, and there are two sets of auxiliary grinding structures, which grind the second grinding surface and the third grinding surface respectively.

[0021] like Figure 3 As shown, the transfer structure 1 includes a first placement plate 101, a first placement rod 102, a second placement plate 103, a second placement rod 104, a positioning mechanism, a transfer head, and a transfer head. The transfer head is used to pick up a single saw blade and place it at the positioning mechanism for positioning. The transfer head is used to pick up the saw blade after it has been positioned at the positioning mechanism and transfer it between the various grinding structures.

[0022] The transfer head includes a three-axis drive mechanism 100 and an auxiliary electromagnet 122. The three-axis drive mechanism 100 is mounted on the top of the frame, and the auxiliary electromagnet 122 is connected to the three-axis drive mechanism 100. The auxiliary electromagnet 122 is used to pick up the saw blade 500 after it has been positioned at the positioning mechanism, and under the drive of the three-axis drive mechanism 100, it transfers the saw blade 500 between the main grinding structure 2 and the auxiliary grinding structure 3. (The three-axis drive mechanism 100 is a conventional mechanical component in the prior art, consisting of three linear modules that are perpendicular to each other in space, which can realize the movement of the auxiliary electromagnet 122 along the X-axis, Y-axis and Z-axis.)

[0023] The first shelf 101 is fixedly installed on the rear side wall of the frame and is arranged vertically. At least two first shelf rods 102 are fixedly installed on one side of the first shelf 101 and perpendicular to it. Figure 3 As shown, the saw blades 500 to be ground are stacked and mounted on the first storage rod 102 (by setting multiple first storage rods 102, more saw blades 500 can be placed inside the frame at the same time, saving the time cost of stopping the machine for loading).

[0024] The second shelf 103 is fixedly installed on the rear side wall of the frame and is arranged vertically, close to the first shelf 101. Multiple second shelf rods 104 are fixedly installed on one side of the second shelf 103 and perpendicular to it. After the saw blade 500 is ground by the main grinding structure 2 and the auxiliary grinding structure 3, the three-axis drive mechanism 100 drives the auxiliary electromagnet 122 to pick up the ground saw blade 500 and place it on the second shelf rod 104 of the second shelf 103.

[0025] The robotic arm is mounted on the right side wall of the frame. The transfer head is connected to the robotic arm. The robotic arm drives the transfer head to pick up the outermost single saw blade 500 from the first placement rod 102 and place it on the positioning mechanism for positioning (the robotic arm is not shown in the figure. A commercially available Coote CRT series robotic arm can be selected).

[0026] like Figure 9 As shown, the transfer head includes a main electromagnet 107, a mounting sleeve 108, an outer extension plate 109, a pressure sleeve 110, an inner extension plate 111, an outer spring groove 112, an inner spring groove 113, a spring 114, a clearance groove 115, a guide rod 116, an anti-detachment block 117, a pressure block 118, a pad block 119, a connecting frame 120, and a nozzle 121. The mounting sleeve 108 is connected to the robotic arm and fixedly mounted on the outside of the main electromagnet 107. The main electromagnet 107 is used to pick up the outermost single saw blade 500 mounted on the first placement rod 102.

[0027] The pressure sleeve 110 is located on the outside of the mounting sleeve 108, and the inner diameter of the pressure sleeve 110 is larger than the outer diameter of the mounting sleeve 108. The outer extension plate 109 is integrally connected to the outer side wall of the mounting sleeve 108, and the inner extension plate 111 is integrally connected to the inner side wall of the pressure sleeve 110. The outer spring groove 112 is arranged in an axial array around the side of the outer extension plate 109 near the inner extension plate 111, and the inner spring groove 113 is arranged in an axial array around the side of the inner extension plate 111 near the outer extension plate 109. The spring 114 is installed in the inner spring groove 112 and the outer spring groove 113, thereby realizing the floating installation of the pressure sleeve 110. By setting the inner spring groove 112 and the outer spring groove 113, the spring 114 can be prevented from falling between the outer extension plate 109 and the inner extension plate 111.

[0028] Multiple clearance slots 115 are arranged in an axial array around the pressure sleeve 110 and penetrate through the pressure sleeve 110. Guide rods 116 are fixed to the outside of the mounting sleeve 108 in an axial array and penetrate through the clearance slots 115. The clearance slots 115 are rounded rectangular slots with the same width as the diameter of the guide rods 116. By setting the mutually cooperating clearance slots 115 and guide rods 116, a displacement space for relative movement between the mounting sleeve 108 and the pressure sleeve 110 is ensured. At the same time, it is ensured that the pressure sleeve 110 and the mounting sleeve 108 can only approach or move away from the saw blade 500 on the first placement rod 102 along the axial direction of the main electromagnet 107. This prevents the pressure sleeve 110 from deflecting axially and affecting the subsequent pressing of the outermost saw blade 500 on the first placement rod 102. It also prevents the torsion of the pressure sleeve 110 from affecting the compression of the spring 114.

[0029] Anti-detachment block 117 is fixed to the end of guide rod 116 away from mounting sleeve 108, and the diameter of anti-detachment block 117 is larger than the diameter of guide rod 116, which limits the pressure sleeve 110 and prevents it from falling off. Pressure blocks 118 are arranged in an axial array around the side of pressure sleeve 110 near saw blade 500, and pad block 119 is fixed on the side of pressure sleeve 110 near saw blade 500. The pad block 119 is made of rubber, which prevents damage to the surface of saw blade 500 when the outermost saw blade 500 is sucked up. At the same time, the circumferential pressure blocks 118 facilitate the entry of airflow when blowing air, thereby facilitating the separation of adjacent saw blades 500.

[0030] The connecting frame 120 is arranged in a ring around the outside of the pressure sleeve 110 in an axial array. The nozzle 121 is installed on the connecting frame 120 and faces between the outermost saw blade 500 and the second layer saw blade 500. The nozzle 121 is connected to an external air pump through a flexible tube. The nozzle 121 and the pad block 119 are staggered to ensure that the airflow can stably pass between the outermost saw blade 500 and the second layer saw blade 500 when the air is sprayed, thereby realizing the single-blade suction of the saw blade 500.

[0031] The positioning mechanism includes a positioning post 105 and a camera 106. The positioning post 105 is fixed on the rear side wall of the frame and is used to position the saw blade 500. The camera 106 is mounted on the frame and faces the positioning post 105. The camera 106 is a commercially available CCD camera and is used to detect whether a single saw blade 500 is placed on the positioning post 105.

[0032] like Figure 9 As shown, when picking up the saw blade 500, the robot arm drives the transfer head to move towards the side closer to the saw blade 500. The pad 119 on one side of the pressure sleeve 110 first contacts the outermost saw blade 500. At this time, due to the height difference between the side of the pressure sleeve 110 and the side of the main electromagnet 107, the main electromagnet 107 and the outermost saw blade 500 do not come into contact and fit together, but there is a gap. The robot arm drives the transfer head to continue moving towards the side closer to the saw blade 500 until the main electromagnet 107 contacts the outermost saw blade 500. At this time, the position of the pressure sleeve 110 remains unchanged, the spring 114 is compressed, and the outer extension plate 109 contacts the inner extension plate 111 (due to the setting of the clearance groove 115, the mounting sleeve 108 will drive the guide rod 116 to move in the clearance groove 115, and there is no interference).

[0033] After the main electromagnet 107 contacts the outermost saw blade 500, it is energized and the main electromagnet 107 picks up the outermost saw blade 500. Then the robot arm drives the transfer head to move outward a short distance until the spring 114 is reset. During the process of the spring 114 gradually resetting, the spring 114, which is in a compressed state, still has a reverse force. Therefore, during the process of the main electromagnet 107 moving outward, the pad 119 is still against the outermost saw blade 500. As a result, the saw blade 500 is slightly deformed (that is, the middle of the outermost saw blade 500 arches outward, similar to the shape of a "pot lid").

[0034] At this time, the external air pump introduces high-pressure gas into the nozzle 121. The nozzle 121 sprays the high-pressure gas between the outermost and second-layer saw blades 500, completing the separation of the outermost and second-layer saw blades 500. This prevents adjacent saw blades 500 from adhering to each other due to the oil film, and avoids picking up two saw blades 500 at once, which could cause them to fall off during transfer or affect subsequent grinding. The robotic arm drives the transfer head to continue moving outward, thus sucking away the outermost saw blade 500.

[0035] The working principle of the transfer structure 1 is as follows: First, the robot arm drives the main electromagnet 107 to attract the outermost saw blade 500, and then places it on the positioning post 105 to position the saw blade 500. After the camera 106 above the positioning post 105 detects the single-layer saw blade 500 on the positioning post 105, the camera 106 sends a signal to the controller (such as a PLC programmable logic controller). After receiving the signal from the camera 106, the controller drives the three-axis drive mechanism 100 to move. The auxiliary electromagnet 122 on the three-axis drive mechanism 100 picks up the positioned saw blade 500 on the positioning post 105 and transfers it between the subsequent main grinding structure 2 and the auxiliary grinding structure 3. (In this embodiment, the main electromagnet 107 is only used to pick up the outermost saw blade 500 and place it on the positioning post 105. The subsequent transfer of the saw blade 500 is entirely undertaken by the auxiliary electromagnet 122.)

[0036] like Figure 4 , 5 As shown, the main grinding structure 2 includes a main grinding frame 200, a lead screw mounting base 201, a drive motor 202, a first lead screw 203, a second lead screw 204, a connecting sleeve 205, a main slide plate 206, a main grinding assembly, a saw blade mounting mechanism 214, and a transfer mounting mechanism 225. The main grinding frame 200 is vertically mounted on the rear side wall of the frame (specifically, a Z-axis linear module is provided between the main grinding frame 200 and the frame, which drives the main grinding frame 200 to move vertically; to improve the smoothness of the main grinding frame 200's lifting, a slide rail slider mechanism installed vertically is provided between the main grinding frame 200 and the rear side wall of the frame; in this embodiment, the Z-axis linear module and the slide rail slider mechanism are not shown in the figure).

[0037] There are two lead screw mounting seats 201, which are fixed to one side of the main grinding frame 200 by screws. One end of the first lead screw 203 is rotatably mounted on one lead screw mounting seat 201 via a bearing, and the other end of the second lead screw 204 is rotatably mounted on the other lead screw mounting seat 201 via a bearing. A connecting sleeve 205 connects the first lead screw 203 and the second lead screw 204, thereby realizing the synchronous rotation of the first lead screw 203 and the second lead screw 204. The first lead screw 203 and the second lead screw 204 have opposite directions of rotation, thereby realizing the synchronous or opposite movement of the lead screw nuts on the first lead screw 203 and the second lead screw 204.

[0038] The drive motor 202 is fixed to the outside of the lead screw mounting base 201 and connected to the first lead screw 203. The drive motor 202 drives the first lead screw 203 to rotate, which in turn drives the second lead screw 204 to rotate. There are two main slide plates 206, one of which is fixedly mounted on the lead screw nut of the first lead screw 203, and the other is fixedly mounted on the lead screw nut of the second lead screw 204. When the drive motor 202 drives the first lead screw 203 to rotate, it drives the two main slide plates 206 to move inward or outward synchronously. To improve the stability of the reciprocating movement of the main slide plates 206, a horizontal slide rail slider mechanism can be provided between the main slide plates 106 and the main grinding frame 100.

[0039] The main grinding assembly includes a gearbox 207, a grinding motor 208, a main gear 209, a secondary gear 210, a grinding wheel 211, a support frame 212, a support head 213, a saw blade mounting mechanism 214, and a shaft guard mechanism. The gearbox 207 is fixedly mounted on one side of the main slide plate 206. The grinding motor 208 is fixedly mounted on the gearbox 207 and connected to the main gear 209 inside the gearbox 207, driving the main gear 209 to rotate. The secondary gear 210 is rotatably mounted inside the gearbox 207 and meshes with the main gear 209. The diameter of the secondary gear 210 is larger than the diameter of the main gear 209 to reduce the output speed of the motor.

[0040] The grinding shaft 226 is mounted on the auxiliary gear 210 by a key connection. The auxiliary gear 210 drives the grinding shaft 226 to rotate synchronously. The grinding wheel 211 is mounted on the bottom of the grinding shaft 226. The grinding shaft 226 drives the grinding wheel 211 to rotate, so as to complete the grinding of the saw blade 500 (the main grinding structure 2 is used to grind the two first grinding surfaces).

[0041] The saw blade mounting mechanism 214 is housed within the frame and is used to receive the single saw blade 500 transferred by the auxiliary electromagnet 122. The saw blade mounting mechanism 214 has a saw blade mounting shaft, on which the auxiliary electromagnet 122 picks up the saw blade 500 and places it.

[0042] The abutment frame 212 is movably installed inside the frame. Specifically, the frame is equipped with a horizontal drive mechanism (such as a linear module or cylinder arranged in the horizontal direction) to drive the abutment frame 212 to move closer to the saw blade 500. The abutment head 213 is installed inside the abutment frame 212. When grinding the saw blade 500, the abutment head 213 abuts against one side of the saw blade 500 to prevent the saw blade 500 from rotating.

[0043] A shaft support mechanism is installed at the bottom of the gearbox 207 to support the grinding shaft 226 and prevent it from shifting downwards under the weight of the grinding wheel 211. Figure 10 , 11As shown, the shaft protection mechanism includes a limiting cylinder 215, a shaft groove 216, an upper sealing groove 217, a lower sealing groove 218, a main oil groove 219, a secondary oil groove 220, an oil baffle surface 221, an oil inlet hole 222, an oil outlet groove 223, and an oil outlet hole 224.

[0044] The limiting cylinder 215 is fixedly installed at the bottom of the gearbox 207. The shaft groove 216 extends vertically through the limiting cylinder 215 and is coaxially arranged with the grinding shaft 226. The diameter of the shaft groove 216 is slightly larger than the outer diameter of the grinding shaft 226, thereby ensuring that there is a gap between the inner wall of the limiting cylinder 215 and the grinding shaft 226, which facilitates the penetration of lubricating oil.

[0045] An upper sealing groove 217 is formed at the top of the limiting cylinder 215, and a lower sealing groove 218 is formed at the bottom of the limiting cylinder 215. Sealing mechanisms are provided in the upper sealing groove 217 and the lower sealing groove 218 to prevent leakage of lubricating oil inside the limiting cylinder 215 (the sealing mechanism can be a skeleton oil seal). The main oil groove 219 is arranged in a shaft array around the inner wall of the limiting cylinder 215, and the auxiliary oil groove 220 is arranged in a shaft array around the inner wall of the limiting cylinder 215 and is connected to the main oil groove 219. The auxiliary oil groove 220 is inclined, and an inclined oil baffle surface 221 is formed on the side of the auxiliary oil groove 220 away from the main oil groove 219.

[0046] An oil inlet 222 is inclinedly formed on the limiting cylinder 215 and communicates with the main oil groove 219. The outer side of the oil inlet 222 is connected to the oil pump via a flexible tube, and the oil pump is used to introduce lubricating oil into the main oil groove 219. An oil drain groove 223 is formed on the inner wall of the limiting cylinder 215 and is connected to the narrow part of the auxiliary oil groove 220, that is, the oil drain groove 223 is close to the bottom of the limiting cylinder 215. An oil drain hole 224 penetrates the limiting cylinder 215 and communicates with the oil drain groove 223. From a top view, the oil drain hole 224 is offset from the oil inlet 222, ensuring that the lubricating oil completely passes through the narrow part of the auxiliary oil groove 220 before being discharged.

[0047] During grinding, the oil pump starts, pumping lubricating oil from the oil tank through the oil inlet 222 into the limiting cylinder 215. The oil fills the entire gap, including the main oil groove 219, the secondary oil groove 220, and all the gaps between the grinding shaft 226 and the limiting cylinder 215. At this time, the grinding shaft 226 has not yet rotated, the oil film has not yet been established, and the grinding shaft 226 is in a static, submerged state. The grinding motor 208 starts, driving the grinding shaft 226 to rotate. Due to the viscosity of the oil, the layer of oil adhering to the outer surface of the grinding shaft 226 is carried along by the grinding shaft 226 in the same direction, forming a high-speed flowing "oil blanket" (such as...). Figure 10 , 11 As shown, the grinding shaft 226 rotates counterclockwise. As the grinding shaft 226 rotates, the oil is carried from the wider section to the narrower section (i.e., from the main oil groove 219 to the secondary oil groove 220, and then impacts the oil-blocking surface 221). Because the gap at the narrower section gradually decreases, a large volume of high-speed oil is forced into the extremely narrow oil drain groove 223 in a very short time, drastically reducing the space in front (the oil passage narrows), while the oil layer behind is continuously pushed in by the grinding shaft 226. The oil is forcibly squeezed at the entrance of the oil drain groove 223, creating extremely high dynamic pressure at the narrow opening.

[0048] Hydraulic pressure acts on the surface of the grinding shaft 226, thereby supporting the grinding shaft 226 within the limiting cylinder 215 and preventing it from moving downwards. When the oil film pressure is sufficient to balance the weight of the grinding shaft 226 and the grinding wheel 211, as well as the cutting load, the grinding shaft 226 is suspended at the exact center of the limiting cylinder 215. At this point, the grinding shaft 226 is completely out of metal-to-metal contact with the inner wall of the limiting cylinder 215, with only a complete high-pressure oil film in between. The squeezed-out oil is discharged from the oil drain hole 224.

[0049] By placing lubricating oil between the limiting cylinder 215 and the grinding shaft 226, the grinding shaft 226 is suspended in the center. Regardless of fluctuations in grinding force, the grinding shaft 226 will not sway left or right, extending its service life and improving the overall lifespan of the equipment. During long-term operation, the grinding shaft 226 and the limiting cylinder 215 inevitably accumulate tiny metal wear particles or external dust. Once these impurities enter the narrow gap, they can scratch the surface of the grinding shaft 226 and damage the oil film. During circulation, the lubricating oil flushes these suspended particles out of the narrow gap, allowing them to flow back to the oil tank with the hot oil. After being filtered, the impurities are retained, ensuring the friction surfaces remain clean and extending the lifespan of the grinding shaft 226 and the limiting cylinder 215.

[0050] Furthermore, the grinding shaft 226 rotates continuously within the limiting cylinder 215, generating a large amount of heat. If the heat accumulates over a long period, a safety accident may occur. Therefore, cold oil is introduced through the oil inlet 222, and after heat exchange, the hot oil is discharged through the oil outlet 224, achieving cooling of the grinding shaft 226 without stopping the machine. This ensures the long-term stable operation of the system and improves the grinding production efficiency.

[0051] like Figure 4As shown, the transfer mounting mechanism 225 is located on one side of the main grinding frame 200. The transfer mounting mechanism 225 includes two vertically arranged transfer shafts. One shaft is used to temporarily receive the saw blade 500 to be ground picked up by the auxiliary electromagnet 122, and the other shaft is used to temporarily receive the saw blade 500 that has been initially ground on the main grinding frame 200. During grinding, the auxiliary electromagnet 122 picks up the saw blade 500 to be ground and places it on one of the transfer shafts. Then, the auxiliary electromagnet 122 picks up the saw blade 500 that has been initially ground from the main grinding frame 200 and places it on the other transfer shaft. The auxiliary electromagnet 122 continues to pick up the saw blade 500 to be ground from the previous transfer shaft and places it on the main grinding frame 200. Finally, the auxiliary electromagnet 122 picks up the saw blade 500 that has been initially ground from the other transfer shaft and transfers it to the auxiliary grinding structure 3.

[0052] There is one set of two auxiliary grinding structures 3, arranged sequentially on one side of the main grinding structure 2, to grind the second and third grinding surfaces of the saw blade 501 respectively. For example... Figure 6 , 7 As shown, each auxiliary grinding structure 3 includes an auxiliary grinding frame 300, a mounting frame 301, a mounting plate 302, a drive shaft 303, a drive plate 304, a drive belt 305, a drive mechanism 306, an auxiliary grinding wheel mounting frame 307, and an auxiliary grinding wheel 308. The auxiliary grinding frame 300 is installed inside the frame, and a cross-shaped linear module (composed of two intersecting linear modules) is provided inside the frame to drive the auxiliary grinding frame 300 to move along the X and Y axes inside the frame, so as to avoid the position of the saw blade 500 after grinding.

[0053] Mounting bracket 301 is fixed to one side of auxiliary grinding bracket 300. Mounting disc 302 is rotatably mounted on the bottom inner side of mounting bracket 301 via bearings. Drive shaft 303 is connected to mounting disc 302, and drive disc 304 is connected to drive shaft 303 via a key connection. Drive mechanism 306 is located on one side of auxiliary grinding bracket 300, and grinding mechanism 306 is connected to drive disc 304 via drive belt 305 to achieve torque transmission (drive mechanism 306 is a conventional belt drive mechanism in the prior art).

[0054] The auxiliary grinding wheel mounting bracket 307 is connected to the mounting plate 302. When the drive mechanism 306 drives the mounting plate 302 to rotate, it will drive the auxiliary grinding wheel mounting bracket 307 to rotate synchronously to grind the second grinding surface with an inclined angle. The auxiliary grinding wheel 308 is rotatably mounted on one side of the auxiliary grinding wheel mounting bracket 307 for grinding the saw blade 500 transferred there.

[0055] like Figure 8 , 12As shown in Figures 13 and 14, the pusher structure includes a pusher frame 400, a pusher fixing plate 401, an adjusting groove 402, a first clamping plate 403, a first clamping groove 404, a second clamping plate 405, a second clamping groove 406, a first fixing hole 407, a connecting rod 408, a sleeve 409, a mounting hole 410, a second fixing hole 411, a limiting plate 412, a connecting plate 413, a pusher plate 414, a lever 415, a first shaft hole 416, a second shaft hole 417, a through hole 418, a third fixing hole 419, a fixing screw 420, a pusher cylinder 421, and a connecting shaft 422. The pusher 400 is slidably disposed on one side of the frame (a linear module is provided between the pusher 400 and the frame, the pusher 400 is mounted on the sliding part of the linear module, and the linear module drives the pusher 400 to reciprocate; the linear module is a conventional mechanical component in the prior art, and in this embodiment, the commercially available HOHB14 model can be used).

[0056] like Figure 12-14 As shown, the pusher tooth fixing plate 401 is fixedly installed on the side of the pusher tooth frame 400 away from the linear module, and the adjusting groove 402 is formed through the pusher tooth fixing plate 401. The pusher tooth frame 400 has a threaded hole that mates with the adjusting groove 402. During installation, the fastening bolt is passed through the adjusting groove 402 on the pusher tooth fixing plate 401 and screwed into the threaded hole on the pusher tooth frame 400, thereby achieving a fixed connection between the pusher tooth fixing plate 401 and the pusher tooth frame 400 (in this embodiment, at least two adjusting grooves 402 are provided to ensure stability after installation).

[0057] Preferably, the adjustment groove 402 is an oblong groove to facilitate fine-tuning of its position during installation, thereby facilitating debugging by the operator during the trial run.

[0058] Preferably, washers can be fitted onto the fastening bolts to improve connection stability and prevent loosening.

[0059] The first clamping plate 403 is integrally connected to one side of the pusher tooth fixing plate 401 and is perpendicular to the pusher tooth fixing plate 401. The first clamping groove 404 is formed on one side of the first clamping plate 403 and is an arc-shaped groove. The second clamping plate 405 is disposed on one side of the first clamping plate 403. The second clamping groove 406 is formed on the side of the second clamping plate 405 near the first clamping plate 403. The second clamping groove 406 is an arc-shaped groove and is disposed opposite to the first clamping groove 404, together forming a clamping cavity.

[0060] The connecting rod 408 is engaged between the first slot 404 and the second slot 406. The first fixing hole 407 extends horizontally through the first plate 403 and the second plate 405. During installation, the bolt is passed through the first fixing hole 407 on the first plate 403 and the second plate 405, and the nut is tightened at the end of the bolt to lock the first plate 403 and the second plate 405 in place, thereby holding and fixing the connecting rod 408 between the two sets of slots (the first slot 404 and the second slot 406).

[0061] By setting a split clamping structure between the first clamping plate 403 and the second clamping plate 405, the connecting rod 408 can be rotated during assembly to adjust the installation angle of the lower sleeve 409, which facilitates flexible debugging by the operator during the trial run.

[0062] like Figure 12-14 As shown, the mounting hole 410 penetrates the sleeve 409 vertically and mates with the connecting rod 408. The sleeve 409 is inserted into the lower end of the connecting rod 408 through the mounting hole 410. The second fixing hole 411 penetrates the side wall of the sleeve 409 and communicates with the mounting hole 410. A corresponding locking through hole is provided at the lower end of the connecting rod 408. During installation, the lower end of the connecting rod 408 is inserted into the mounting hole 410 of the sleeve 409. The bolt is passed through the second fixing hole 411 and the locking through hole at the lower end of the connecting rod 408, and the nut is tightened at the end of the bolt, thereby achieving a fixed connection between the sleeve 409 and the connecting rod 408.

[0063] There are two limiting plates 412, which are fixed to the bottom of the sleeve 409 and spaced apart, forming a limiting groove between the two limiting plates 412. The push plate 414 is rotatably installed between the two limiting plates 412, and the width of the push plate 414 is adapted to the width of the limiting groove. Relying on the limiting effect of the limiting groove, the push plate 414 can be prevented from swinging laterally during the tooth-pulling process.

[0064] like Figure 15 As shown, the first shaft hole 416 passes through the two limiting plates 412, the second shaft hole 417 passes through the push plate 414 and is coaxial with the first shaft hole 416, and the connecting shaft 422 passes through the first shaft hole 416 and the second shaft hole 417, thereby realizing the rotational connection between the push plate 414 and the limiting plate 412.

[0065] A through hole 418 is formed on the top of the limiting plate 412 and communicates with the first shaft hole 416. A third fixing hole 419 is formed on the outer side wall of the connecting shaft 422 and mates with the through hole 418. Both the through hole 418 and the third fixing hole 419 are threaded holes. A fixing screw 420 passes through the through hole 418 and is screwed into the third fixing hole 419 of the connecting shaft 422 to achieve axial fixation of the connecting shaft 422 and prevent the connecting shaft 422 from moving within the shaft hole.

[0066] Preferably, a bushing (not shown in the figure) can be interference-fitted into the second shaft hole 417, and the connecting shaft 422 can be inserted into the bushing to reduce the rotational friction between the connecting shaft 422 and the second shaft hole 417.

[0067] like Figure 15 , 16 As shown, the connecting plate 413 is fixed to the bottom of the two limiting plates 412, the cylinder body of the pushing cylinder 421 is hinged to the top of the connecting plate 413, and the piston rod of the pushing cylinder 421 is hinged to the bottom of the push plate 414 (the pushing cylinder 421 is a commercially available conventional linear cylinder; in this embodiment, a CP96 series piston rod cylinder can be selected).

[0068] When the cylinder 421 is running, it drives the push plate 414 to rotate around the connecting shaft 422, thereby driving the lever 415 to swing and enter or exit the tooth groove of the circular saw blade. The lever 415 is fixedly connected to the front end of the push plate 414 and is used to move the saw blade 501 of the circular saw blade to be ground, so as to achieve tooth-by-tooth feeding.

[0069] During tooth pushing operation, the lever 415 remains inserted into the tooth groove under the action of the push cylinder 421. At this time, the linear module drives the tooth pushing frame 400 to move tangentially along the circular saw blade. The tooth pushing frame 400 drives the lever 415 to move synchronously. The lever 415 pushes against the side wall of the tooth groove to push the circular saw blade to rotate one tooth pitch. During reset, the push cylinder 421 is activated and drives the push plate 414 to swing, so that the front end of the lever 415 swings out of the current tooth groove to avoid the saw blade teeth. Then the linear module drives the tooth pushing frame 400 to move in the opposite direction to reset. During the reset process, the lever 415 disengages from the outer edge of the circular saw blade. After the tooth pushing frame 400 is reset to the initial position, the push cylinder 421 is activated again, driving the push plate 414 to swing in the opposite direction, so that the lever 415 is re-inserted into the next tooth groove, waiting for the next tooth pushing cycle.

[0070] This invention relates to a multi-directional grinding device for circular saw blades. It integrates the main grinding structure and two sets of auxiliary grinding structures within a single frame, and utilizes a transfer structure to automatically transfer the saw blade between grinding stations. The saw blade can complete all multi-directional grinding processes sequentially on a single machine, requiring no manual intervention or transfer / re-clamping between different devices. Compared to the existing decentralized operation method that requires three independent machines for sequential processing, this invention significantly reduces auxiliary waiting time and loading / unloading time between processes, greatly improving the processing cycle time and overall efficiency of mass production.

[0071] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A multi-directional grinding device for circular saw blades, characterized in that, It includes: frame; The transfer structure (1) includes a transfer head for picking up a single saw blade, a positioning mechanism disposed inside the frame and positioning the saw blade picked up by the transfer head, and a transfer head for picking up and transferring the positioned saw blade. The main grinding structure (2) includes a main grinding frame (200) that can be lifted and lowered in the frame, a main slide plate (206) that can be moved synchronously towards or away from each other on one side of the main grinding frame (200), and a main grinding assembly that is disposed at the bottom of the main slide plate (206). The auxiliary grinding structure (3) includes an auxiliary grinding frame (300) disposed inside the frame, an auxiliary grinding wheel mounting frame (307) rotatably mounted on one side of the auxiliary grinding frame (300), and an auxiliary grinding wheel (308) disposed on one side of the auxiliary grinding wheel mounting frame (307). The push tooth structure (4) includes a push tooth frame (400) movably disposed in the frame, a limiting plate (412) fixed to one side of the push tooth frame (400) and spaced apart, a limiting groove formed between the limiting plates (412), a push plate (414) rotatably mounted between the limiting plates (412), and a lever (415) fixed to one side of the push plate (414) for moving the saw blade.

2. The multi-directional grinding equipment for circular saw blades according to claim 1, characterized in that: The main grinding assembly includes a gearbox (207) disposed on one side of the main slide plate (206), a main gear (209) and a secondary gear (210) rotatably mounted in the gearbox (207) and meshing with each other, a grinding shaft (226) connected to the secondary gear (210), a grinding wheel (211) mounted on the bottom of the grinding shaft (226), and a shaft guard mechanism disposed on the bottom of the gearbox (207) and sleeved on the outside of the grinding shaft (226).

3. The multi-directional grinding device for a circular saw blade according to claim 1, characterized in that: The pusher structure (4) further includes a connecting plate (413) integrally connected to the bottom of the limiting plate (412), a first shaft hole (416) penetrating the limiting plate (412), a second shaft hole (417) penetrating the push plate (414) and coaxially arranged with the first shaft hole (416), a connecting shaft (422) passing through the first shaft hole (416) and the second shaft hole (417), and a pusher cylinder (421) connected between the push plate (414) and the connecting plate (413).

4. The multi-directional grinding equipment for circular saw blades according to claim 1, characterized in that: The main grinding structure (2) also includes a saw blade mounting mechanism (214), a support frame (212) movably disposed on one side of the saw blade mounting mechanism (214), and a support head (213) fixed on the side of the support frame (212) near the saw blade mounting mechanism (214).

5. A multi-directional grinding device for a circular saw blade according to claim 1, characterized in that: The main grinding structure (2) further includes a lead screw mounting base (201) fixed on one side of the main grinding frame (200) and spaced apart, a first lead screw (203) and a second lead screw (204) rotatably mounted inside the lead screw mounting base (201), and a connecting sleeve (205) for connecting the first lead screw (203) and the second lead screw (204). The main slide plate (206) is respectively mounted on the first lead screw (203) and the second lead screw (204), and the first lead screw (203) and the second lead screw (204) have opposite rotation directions.

6. The multi-directional grinding equipment for circular saw blades according to claim 1, characterized in that: The transfer head includes a main electromagnet (107), a mounting sleeve (108) fixed to the outside of the main electromagnet (107), a pressure sleeve (110) floating outside the mounting sleeve (108), a pressure block (118) surrounding one side of the pressure sleeve (110), and a nozzle (121) disposed outside the pressure sleeve (110).

7. A multi-directional grinding device for a circular saw blade according to claim 6, characterized in that: The transfer head also includes an outer extension plate (109) integrally connected to the outside of the mounting sleeve (108), an inner extension plate (111) disposed inside the pressure sleeve (110), an outer spring groove (112) opened on one side of the outer extension plate (109), an inner spring groove (113) opened on one side of the inner extension plate (111), and a spring (114) disposed between the outer spring groove (112) and the inner spring groove (113).

8. A multi-directional grinding device for a circular saw blade according to claim 2, characterized in that: The shaft protection mechanism includes a limiting cylinder (215) fixed to the bottom of the gearbox (207), an upper sealing groove (217) opened on the top of the limiting cylinder (215), a lower sealing groove (218) opened on the bottom of the limiting cylinder (215), an oil groove circumferentially arranged on the inner side of the limiting cylinder (215), an oil drain groove (223) opened on the inner wall of the limiting cylinder (215) and connected to the oil groove, an oil inlet hole (222) penetrating the limiting cylinder (215) and connected to the oil groove, and an oil drain hole (224) penetrating the limiting cylinder (215) and connected to the oil drain groove (223).

9. A multi-directional grinding device for a circular saw blade according to claim 8, characterized in that: The oil trough includes a main oil trough (219) and a secondary oil trough (220) that are opened on the inner side wall of the limiting cylinder (215) and are interconnected, as well as an oil baffle surface (221) that is inclined on one side of the secondary oil trough (220).

10. A multi-directional grinding device for a circular saw blade according to claim 7, characterized in that: The transfer head also includes a relief groove (115) circumferentially disposed on the side wall of the pressure sleeve (110), a guide rod (116) circumferentially disposed on the outside of the mounting sleeve (108) and passing through the relief groove (115), an anti-detachment block (117) fixed on the outside of the guide rod (116), and a pad (119) fixed on one side of the pressure block (118).

Images