A blade grinding device for a saw chain

Abstract

The application relates to a saw chain blade grinding device, belonging to the field of grinding devices, which comprises a feeding mechanism, a moving platform, a positioning mechanism, a control mechanism, a first linear driving mechanism, a grinding wheel, a power mechanism for driving the grinding wheel to rotate and a second linear driving mechanism; the feeding mechanism comprises a vibrating disc and an inclined feeding track, the moving platform is consistent with the inclination angle of the feeding track, the positioning mechanism is arranged on the moving platform, the positioning mechanism is provided with a plurality of linearly and intervally arranged positioning grooves, the positioning grooves are used for positioning the blades, the first linear driving mechanism is used for driving the moving platform and the positioning mechanism to stepwise move, so that the positioning mechanism sequentially receives the blades from the feeding mechanism; and the control mechanism is used for controlling the switching of the first state and the second state of the positioning mechanism. The application can improve the blade grinding efficiency and product quality consistency.

Description

Technical Field

[0001] This application relates to the field of grinding apparatus, and more particularly to a saw blade grinding apparatus. Background Technology

[0002] A chainsaw is a hand-held saw (cutting machine) powered by a gasoline engine, mainly used for logging and timber processing. Its working principle is to perform cutting action by the lateral movement of the interlaced blades on the saw chain.

[0003] A saw chain consists of a drive plate, a connecting plate, and blades fixed at intervals on the connecting plate, which are connected in a rotating manner from end to end. Figure 1 As shown, the blade includes a connecting part 101, a depth limiting part 103, and a 7-shaped blade body 105. A cutting groove 104 is formed between the depth limiting part 103 and the 7-shaped blade body 105. The 7-shaped blade body 105 has an inclined cutting surface 106. The connecting part 101 has two mounting holes 102. The blade is connected to the transmission plate through a rotating pin that passes through the mounting holes 102.

[0004] When manufacturing the blade, the cutting edge 106 needs to be ground. Secondly, after long-term cutting operations, the cutting edge 106 will wear down and needs to be ground again using a grinding tool.

[0005] Chinese patent CN107186552A discloses a saw chain blade sharpening machine, including a frame, a servo motor, a sliding device, and a sharpening device. The servo motor is connected to a lead screw via a coupling. The sliding device includes a guide rail and a guide rail slider mounted on the guide rail. The guide rail is mounted on the frame. The sharpening device includes a vibratory feeder, a feeding trough, a feeding cylinder, a forming grinding wheel, and a spindle motor. The feeding cylinder is connected to a feeding fork via a hinge and fixed to the feeding trough. The spindle motor is connected to the guide rail slider via a nut, and the lead screw rotates in contact with the nut. The feed end of the feeding trough is connected to the vibratory feeder, and a clamping cylinder is connected to the outside of the discharge end. The forming grinding wheel is positioned above the discharge end of the feeding trough and is connected to the spindle motor. The vibratory feeder contains saw chain blades.

[0006] The vibratory feeder arranges and outputs blades. The blades are pushed sequentially to the clamping cylinder by the feeding fork. The clamping cylinder fixes the blades, and the grinding wheel moves into position to grind the blade's cutting edge. The above actions are repeated to complete the grinding of each blade's cutting edge in sequence. That is, the blade grinding process requires sequential positioning and fixing, and sequential grinding wheel movement into position, resulting in low production efficiency. Summary of the Invention

[0007] To improve grinding efficiency, this application provides a saw blade grinding device.

[0008] This application provides a saw chain blade grinding device, which adopts the following technical solution: A saw blade grinding device includes a feeding mechanism, a moving platform, a positioning mechanism, a control mechanism, a first linear drive mechanism, a grinding wheel, a power mechanism for driving the grinding wheel to rotate, and a second linear drive mechanism. The feeding mechanism includes a vibrating plate and an inclined conveying rail. The moving platform is inclined at the same angle as the conveying rail. The positioning mechanism is disposed on the moving platform and has multiple positioning slots arranged in a straight line. The positioning slots are used to position the blades. The first linear drive mechanism is used to drive the moving platform and the positioning mechanism to move in a step-by-step manner, so that the positioning mechanism sequentially receives the blades from the feeding mechanism. The control mechanism is used to control the switching between a first state and a second state of the positioning mechanism. When the positioning mechanism is in the first state, the first side opening of the positioning slot is aligned with the discharge end of the feeding mechanism, and the blade is in a movable state. When the positioning mechanism is in the second state, the positioning slot and the blade are inclined together, the cutting surfaces of each blade are coplanar, and the positioning mechanism fixes the blade. The driving direction of the second linear drive mechanism is parallel to the moving direction of the moving platform. The second linear drive mechanism is used to drive the power mechanism and the grinding wheel to move linearly, and the grinding wheel is used to grind the cutting surfaces of each blade in the coplanar state sequentially.

[0009] By adopting the above technical solution, firstly, by setting up a positioning mechanism and a first linear drive mechanism, the moving platform and the positioning mechanism move in steps. The positioning mechanism sequentially receives the blades from the feeding mechanism, thus realizing the batch positioning of multiple blades. Then, combined with the control of the control mechanism, the positioning mechanism is in the second state, where the positioning mechanism fixes the blades and the cutting surfaces of each blade are coplanar. At this time, the grinding wheel only needs to move in a straight line to grind the cutting surfaces of multiple blades in one go, greatly improving production efficiency.

[0010] Furthermore, production efficiency can be further improved. For example, multiple positioning mechanisms can be set up to correspond to one grinding wheel. When one positioning mechanism is in place with a batch of cutting tools, the grinding wheel can grind the inclined cutting tools that are fixed in another positioning mechanism. That is, the grinding wheel can move back and forth in a straight line to grind the cutting edge without stopping.

[0011] Secondly, existing technology not only has low production efficiency, but also suffers from errors in the positional accuracy of the blades and grinding wheels due to the multi-stage positioning and grinding process. This results in slight deviations in the grinding quality of each blade's cutting edge, such as slight deviations in the cutting edge angle. Although these deviations are extremely small, the different force angles on each blade's cutting edge during cutting operations lead to different degrees of wear. Furthermore, these wear errors are amplified after prolonged operation. Consequently, it is difficult to achieve consistent finishing when re-grinding the cutting edge, resulting in a tendency for the blade to become more and more misaligned, ultimately leading to poor performance.

[0012] In the technical solution of this application, the positioning mechanism can fix multiple blades at one time, and the grinding wheel grinds multiple blades at one time. This greatly reduces the number of fixing times and the number of passes, which improves the consistency of the grinding angle of the blade surfaces. Therefore, after long-term cutting operations, it can ensure that the wear degree of each blade surface is as similar as possible. In this way, when the worn surface is ground again in the future, the repair degree is more consistent, thereby improving the service life.

[0013] Optionally, the positioning mechanism includes a fixed plate, a movable plate, and multiple positioning seats, all arranged in parallel. Each positioning seat has a positioning groove with a first side opening, a second side opening, and a top opening. The positioning seat is tilted at the same angle as the moving platform. The movable plate is perpendicular to the conveying rail. Both ends of the positioning seat are hinged to the moving platform and the movable plate, respectively. The second side opening faces the movable plate. The fixed plate is externally fixed and located on the side away from the movable plate relative to the positioning seat. When the positioning mechanism is in the first state, the first side opening of the positioning groove is aligned with the discharge end of the conveying rail, the positioning seat is perpendicular to the movable plate, and the blade moves from the conveying rail... The material feeder enters the positioning slot through the first side opening at the discharge end of the feeder rail, and one end of the blade abuts against the side of the movable plate through the second side opening. The first linear drive mechanism drives the moving platform and the positioning mechanism to move in a step-by-step manner, so that each blade enters the positioning slot in sequence. After each blade is in place and the moving platform moves the movable plate to be opposite to the fixed plate, the control mechanism controls the movable plate to move, the positioning seat deflects, and the movable plate moves closer to the fixed plate, so that the positioning mechanism is in the second state. At this time, the positioning slot and the blade are inclined together, so that the cutting surfaces of each blade are coplanar, and the sides of the movable plate and the fixed plate abut against the two ends of the fixed blade respectively.

[0014] Optionally, the power mechanism includes a motor, a machine arm housing, and a gear assembly. The grinding wheel is rotatably engaged with one end of the machine arm housing, and the other end of the machine arm housing is fixedly connected to the main body of the second linear drive mechanism and the motor. The gear assembly is located inside the machine arm housing, and the output end of the motor transmits power to the grinding wheel through the gear assembly.

[0015] Optionally, the positioning mechanism includes a fixed strip, a movable strip, and multiple positioning structures spaced apart along the length of the movable strip. The movable strip is perpendicular to the conveying rail. The positioning structure includes two parallel connecting rods, with the two ends of the connecting rods hinged to the moving platform and the movable strip, respectively. The connecting rods are fixed with pressure plates, and the sides of the two pressure plates form the opposite groove walls of the positioning groove. The surface of the moving platform serves as the bottom surface of the positioning groove. The positioning groove has a first side opening, a second side opening, and a top opening. The second side opening faces the movable strip. The fixed strip is externally fixed and located on the side away from the movable strip relative to the positioning seat.

[0016] Optionally, the control mechanism includes a hydraulic cylinder, a transmission rod, and connecting arms. The hydraulic cylinder is fixed to the moving platform, and the extension and retraction direction of the hydraulic cylinder is parallel to the movement direction of the moving platform. The transmission rod is coaxially fixed to the output end of the hydraulic cylinder. Multiple connecting arms are vertically fixed to the side of the movable plate. The connecting arms are provided with oblong holes, and the length direction of the oblong holes is perpendicular to the length direction of the transmission rod. The transmission rod is fixed with a slider, and the slider slides in cooperation with the oblong holes.

[0017] Optionally, the control mechanism includes a hydraulic cylinder, a transmission rod, and multiple sets of elastic rods. The hydraulic cylinder is fixed to the moving platform, and the extension and retraction direction of the hydraulic cylinder is parallel to the movement direction of the moving platform. The transmission rod is coaxially fixed to the output end of the hydraulic cylinder. Multiple sets of elastic rods are vertically fixed to the side of the movable plate. Each set of elastic rods includes two elastic rods. A round rod is fixed to the transmission rod, and the round rod slides through the strip-shaped gap formed between the two elastic rods.

[0018] Optionally, the positioning mechanism includes a movable plate and multiple positioning structures spaced apart along the length of the movable plate. The movable plate is perpendicular to the conveying rail. Each positioning structure includes a follower base plate, a first fork, a second fork, and two parallel swing arms. Each swing arm is fixed with a vertical plate, and the two vertical plates are positioned opposite each other. The middle portions of the first and second forks are hinged together. The first and second forks are of the same length and are combined in an X-shape. Both ends of the first fork are hinged to one end of each of the two swing arms, and one end of the first fork is simultaneously hinged to the movable plate, while the other end of the first fork is simultaneously hinged to the moving platform. The second fork... Both ends are fixed with cylindrical blocks, which slide and engage with corresponding swing arms. The end of the follower base plate away from the movable strip is hinged to the moving platform, and the other end of the follower base plate is located between two adjacent swing arms. The sides of the two upright plates form the opposite groove walls of the positioning groove, and the surface of the follower base plate serves as the bottom surface of the positioning groove. The positioning groove has a first side opening, a second side opening, and a top opening, with the second side opening facing the movable strip. A frustum-shaped positioning block is fixed to the side of the upright plate. The moving platform is provided with an arc-shaped damping strip and a limiting block, and the center of curvature of the arc-shaped damping strip is the hinge center between the first fork and the moving platform.

[0019] Optionally, the follower base plate is made of rubber.

[0020] In summary, this application includes at least one of the following beneficial technical effects: By setting up a positioning mechanism, multiple blades can be positioned in batches. Combined with the control mechanism, the positioning mechanism is in its second state, fixing the blades and making the cutting surfaces of each blade coplanar. At this time, the grinding wheel only needs to move in a straight line to grind the cutting surfaces of multiple blades in sequence, greatly improving production efficiency. Furthermore, the number of fixing times and the number of passes are greatly reduced, which improves the consistency of the grinding angle of the cutting surfaces of multiple blades. When grinding the worn surfaces again in a subsequent process, the degree of repair is more consistent, thereby increasing the service life. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the blade's structure.

[0022] Figure 2 This is a schematic diagram of the overall structure of Example 1.

[0023] Figure 3 This is an exploded view of the positioning mechanism of Example 1.

[0024] Figure 4 This is a cross-sectional view of the power mechanism in Embodiment 1.

[0025] Figure 5 This is a schematic diagram of the positioning mechanism in the second state of Embodiment 1.

[0026] Figure 6 This is a schematic diagram of the control mechanism in Embodiment 2.

[0027] Figure 7 This is a schematic diagram of the overall structure of Example 3.

[0028] Figure 8 This is an exploded view of the positioning mechanism in Example 3.

[0029] Figure 9 This is a schematic diagram of the positioning mechanism in the second state of Embodiment 3.

[0030] Figure 10 This is a schematic diagram of the overall structure of Example 4.

[0031] Figure 11 This is a schematic diagram of the positioning structure in Example 4.

[0032] Figure 12 This is a schematic diagram of the first and second forks in Embodiment 4.

[0033] Figure 13 This is a schematic diagram of the positioning mechanism in the first state of Embodiment 4.

[0034] Figure 14 This is a schematic diagram of the positioning mechanism in Embodiment 4 transitioning from the first state to the second state.

[0035] Figure 15 This is a schematic diagram of the positioning mechanism in the second state of Embodiment 4.

[0036] Explanation of reference numerals in the attached drawings: 1. Positioning mechanism; 100. Blade; 101. Connecting part; 102. Mounting hole; 103. Depth limiting part; 104. Cutting groove; 105. Blade body; 106. Cutting edge; 11. Positioning seat; 111. Positioning groove; 112. Upper opening; 113. First side opening; 114. Second side opening; 12. Rotating shaft; 13. Connecting rod; 14. Pressure plate; 15. Swing rod; 151. Vertical plate; 152. Positioning block; 153. T-slot; 16. Follower base plate; 17. 18. First fork; 19. Second fork; 10. Cylindrical block; 11. Arc-shaped damping strip; 12. Limiting block; 23. Fixed platform; 24. Moving platform; 25. Conveying rail; 26. Movable plate; 27. Fixed plate; 38. Hydraulic cylinder; 39. Transmission rod; 300. Connecting arm; 311. Waist-shaped hole; 32. Grinding wheel; 33. Motor; 34. Arm housing; 35. Gear assembly; 36. Elastic rod; 37. Round rod; 38. Slider. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 -Appendix Figure 15 This application will be described in further detail. Example 1

[0038] Example 1 discloses a saw blade grinding device. (Refer to...) Figure 2 , Figure 3 , Figure 4 The saw chain blade grinding device includes a feeding mechanism, a fixed platform 20, a moving platform 201, a positioning mechanism 1, a control mechanism, a first linear drive mechanism, a grinding wheel 305, a power mechanism for driving the grinding wheel 305 to rotate, and a second linear drive mechanism. The feeding mechanism includes a vibratory feeder (not shown in the figure), an inclined conveying rail 202, a feeding cylinder, and a feeding fork (not shown in the figure). The vibratory feeder arranges and outputs the blades 100 to the conveying rail 202. The feeding cylinder and the feeding fork are existing technologies, and their specific structures can be found in Chinese Patent Publication No. CN107186552A, which will not be elaborated here. The feeding cylinder and the feeding fork are mainly used to push the blades 100 to move in a stepping manner.

[0039] like Figure 2As shown, the fixed platform 20 is located near the discharge end of the conveying rail 202, and the moving platform 201 is located above the fixed platform 20. The upper surface of the moving platform 201 is at the same inclination angle as the conveying rail 202. The moving platform 201 slides with the fixed platform 20, and its sliding direction is perpendicular to the discharge direction of the conveying rail 202. A first linear drive mechanism (not shown in the figure) is used to drive the moving platform 201 to move in a stepping manner. The first linear drive mechanism can be a linear drive device such as an electric push rod or a lead screw drive module.

[0040] like Figure 3 As shown, the positioning mechanism 1 is mounted on the moving platform 201. The positioning mechanism 1 has multiple positioning slots 111 arranged in a straight line. The positioning slots 111 are used to position the blade 100. Specifically, the positioning mechanism 1 includes a fixed strip 204, a movable strip 203, and multiple positioning seats 11. The movable strip 203 extends along the moving direction of the moving platform 201 and is perpendicular to the upper surface of the moving platform 201. The positioning seats 11 are located on one side of the movable strip 203. Each positioning seat 11 is arranged in parallel and spaced along the length of the movable strip 203. The positioning seats 11 have the same inclination angle as the moving platform 201. The two ends of the positioning seats 11 are hinged to the moving platform 201 and the movable strip 203, respectively. Specifically, each end of the positioning seat 11 is fixed with a rotating shaft 12. The two rotating shafts 12 are respectively inserted into and rotated with the upper surface of the moving platform 201 and the bottom surface of the movable strip 203.

[0041] like Figure 3 As shown, the positioning seat 11 has a positioning groove 111, which has a first side opening 113, a second side opening 114 and an upper opening 112, and the second side opening 114 is directly opposite the movable strip 203.

[0042] like Figure 2 As shown, the fixed strip 204 is located on the side of the relative positioning seat 11 away from the movable strip 203. Furthermore, the fixed strip 204 is externally fixed and can be fixed to the material conveying rail 202 or the fixed platform 20, that is, the fixed strip 204 is not connected to the movable platform 201.

[0043] Positioning mechanism 1 has a first state and a second state. When positioning mechanism 1 is in the first state (see...), Figure 3 The first side opening 113 of the positioning groove 111 is aligned with the discharge end of the conveying rail 202, and the positioning seat 11 is perpendicular to the movable strip 203; when the positioning mechanism 1 is in the second state, the positioning seat 11 is tilted (see...). Figure 5The control mechanism is used to control the switching between the first and second states of the positioning mechanism 1. In this embodiment, the control mechanism includes a hydraulic cylinder 301, a transmission rod 302, and a connecting arm 303. The hydraulic cylinder 301 is fixed to the moving platform 201, and the extension and retraction direction of the hydraulic cylinder 301 is parallel to the movement direction of the moving platform 201. The transmission rod 302 is coaxially fixed to the output end of the hydraulic cylinder 301. Multiple connecting arms 303 are vertically fixed to the side of the movable plate 203. The connecting arm 303 is provided with an oblong hole 304, and the length direction of the oblong hole 304 is perpendicular to the length direction of the transmission rod 302. The transmission rod 302 is fixed with a slider 311, and the slider 311 slides and engages with the oblong hole 304. That is, the extension and retraction of the transmission rod 302 is controlled by the hydraulic cylinder 301, and the engagement of the slider 311 with the connecting arm 303 is used to drive the movable plate 203 to shift, thereby changing the tilt angle of the positioning seat 11 relative to the movable plate 203.

[0044] like Figure 4 , Figure 5 As shown, the second linear drive mechanism is externally fixed and can be fixed to one side of the fixed platform 20. The second linear drive mechanism is located above one side of the moving platform 201 (not shown in the figure). The second linear drive mechanism can be a linear drive device such as an electric push rod or a lead screw drive module, which will not be described in detail here. The power mechanism includes a motor 306, a machine arm housing 307, and a gear assembly 308. The grinding wheel 305 is rotatably engaged with one end of the machine arm housing 307. The other end of the machine arm housing 307 is fixedly connected to the output end of the second linear drive mechanism and the main body of the motor 306. The gear assembly 308 is located inside the machine arm housing 307. The output end of the motor 306 transmits power to the grinding wheel 305 through the gear assembly 308, and drives the grinding wheel 305 to move along the length direction of the movable plate 203 through the second linear drive mechanism (its direction of movement is shown in the figure). Figure 5 (middle arrow direction).

[0045] During grinding, the vibratory feeder outputs the cutting blade 100 to the feed rail 202. The feeding cylinder and the feeding fork push the cutting blade 100 to move in a stepping motion. Meanwhile, the positioning mechanism 1 is in the first state, with the first side opening 113 of the positioning groove 111 aligned with the discharge end of the feed rail 202. The cutting blade 100 enters the positioning groove 111 of the positioning seat 11 from the discharge end of the feed rail 202 through the first side opening 113. Due to the tilt of the moving platform 201, the cutting blade 100 continues to move under the action of gravity until one end of the cutting blade 100 abuts against the side of the movable strip 203 through the second side opening 114. Then, the first linear drive mechanism drives the moving platform 201 and the positioning mechanism 1 to move in a stepwise manner, causing the next empty positioning seat 11 to move to the discharge end facing the conveyor rail 202 to receive the next blade 100, and the blade 100 that has been positioned moves to a position where one end faces the fixed strip 204. In this way, each blade 100 can enter the positioning slot 111 in sequence. After all the blades 100 are in position, the movable strip 203 is opposite to the fixed strip 204. Then, the control mechanism controls the movable strip 203 to move, and the positioning seat 11 deflects, so that the positioning mechanism 1 is in the second state (see...). Figure 5 At this time, the positioning groove 111 and the blade 100 are inclined together, so that the cutting surfaces 106 of each blade 100 are in a coplanar state. Furthermore, since the movable strip 203 moves closer to the fixed strip 204, that is, the sides of the movable strip 203 and the fixed strip 204 respectively abut against the two ends of the fixed blade 100, thereby fixing the blade 100.

[0046] Finally, the second linear drive mechanism drives the power mechanism and the grinding wheel 305 to move linearly, and the grinding wheel 305 will grind the cutting surfaces 106 of each blade 100 in the coplanar state in sequence.

[0047] The implementation principle of Example 1 is as follows: First, by setting up the positioning mechanism 1 and the first linear drive mechanism, the moving platform 201 and the positioning mechanism 1 move in a step-by-step manner. The positioning mechanism 1 receives the blades 100 from the feeding mechanism in sequence, thereby realizing the batch positioning of multiple blades 100. Then, combined with the control of the control mechanism, the positioning mechanism 1 is in the second state, where the positioning mechanism 1 fixes the blades 100 and the cutting surfaces 106 of each blade 100 are coplanar. At this time, the grinding wheel 305 only needs to move in a straight line to grind the cutting surfaces 106 of multiple blades 100 in sequence, which greatly improves the production efficiency.

[0048] Furthermore, production efficiency can be further improved. For example, multiple positioning mechanisms 1 can be set up to correspond to one grinding wheel 305. When one of the positioning mechanisms 1 is in place with a batch of cutting blades 100, the grinding wheel 305 can grind the inclined cutting blades 100 that are fixed in another positioning mechanism 1. That is, the grinding wheel 305 can move back and forth in a straight line to grind the cutting edge 106 without stopping.

[0049] Secondly, the existing technology not only has low production efficiency, but also suffers from errors in the positional accuracy of the blade 100 and the grinding wheel 305 due to the multi-stage positioning and grinding process. This results in slight deviations in the grinding quality of the cutting surfaces 106 of each blade 100, such as slight deviations in the angle of the cutting surfaces 106. Although the deviations are extremely small, the wear degree varies during cutting operations because the force angles on the cutting surfaces 106 of each blade 100 are different. Furthermore, this wear error will be amplified after prolonged operation. Therefore, it is difficult to achieve consistent finishing when grinding the cutting surfaces 106 in subsequent operations, resulting in a tendency for the grinding to become more and more off-center, which in turn leads to poor performance.

[0050] In the technical solution of this application, the positioning mechanism 1 can fix multiple blades 100 at one time, and the grinding wheel 305 grinds multiple blades 100 at one time. This greatly reduces the number of fixing times and the number of passes, thereby improving the grinding angle consistency of the cutting surfaces 106 of the multiple blades 100. Therefore, after long-term cutting operations, it can also ensure that the wear degree of the cutting surfaces 106 of each blade 100 is as similar as possible. In this way, when the worn surfaces are ground again in the future, the repair degree is more consistent, thereby improving the service life. Example 2

[0051] The difference between Example 2 and Example 1 is that, as Figure 6 As shown, the connecting arm 303 is replaced with two elastic rods 309, and the transmission rod 302 is fixed with a round rod 310. The round rod 310 is slidably set in the strip gap formed between the two elastic rods 309.

[0052] Because the elastic rod 309 has a certain elasticity, and has a fixed end and a free end (its fixed end is the end that is fixed to the movable strip 203), when the positioning mechanism 1 is in the second state, the round rod 310 moves from the fixed end of the elastic rod 309 toward the free end. That is, through the cantilever effect, the elastic rod 309 is more likely to undergo elastic deformation. In this embodiment, the stroke of the transmission rod 302 is greater than that of embodiment 1, which causes the elastic rod 309 to undergo a certain elastic deformation. The elastic force of the elastic rod 309 will be converted into a force that forces the movable strip 203 to shift further, thereby improving the fixing strength of the blade 100. Example 3

[0053] The difference between Example 3 and Example 1 or Example 2 is that, as Figure 7 , Figure 8As shown, the positioning mechanism 1 includes a fixed strip 204, a movable strip 203, and multiple positioning structures spaced apart along the length of the movable strip 203. The fixed strip 204 and the movable strip 203 in this embodiment are the same as those in Embodiment 1. The positioning structure includes two parallel connecting rods 13, with both ends of the connecting rods 13 hinged to the moving platform 201 and the movable strip 203, respectively. Specifically, both ends of the connecting rods 13 are fixed with rotating shafts 12, and the two rotating shafts 12 are respectively inserted into and rotated with the upper surface of the moving platform 201 and the bottom surface of the movable strip 203.

[0054] The connecting rod 13 is fixed with a pressure plate 14. The sides of the two pressure plates 14 form the opposite groove walls of the positioning groove 111. The surface of the moving platform 201 serves as the bottom surface of the positioning groove 111, that is, the bottom surface of the blade 100 will directly contact the upper surface of the moving platform 201. The positioning groove 111 has a first side opening 113, a second side opening 114 and an upper opening 112. The second side opening 114 is directly opposite the movable strip 203.

[0055] When positioning mechanism 1 is in the first state (see...) Figure 7 The first side opening 113 of the positioning groove 111 is aligned with the discharge end of the conveying rail 202. The connecting rod 13 and the pressure plate 14 are perpendicular to the movable strip 203, and the gap between the two pressure plates 14 is greater than the thickness of the blade 100. The blade 100 enters the positioning groove 111 from the discharge end of the conveying rail 202 through the first side opening 113. Due to the tilt of the moving platform 201, the blade 100 will continue to move under the action of gravity until one end of the blade 100 passes through the second side opening 113. 14 abuts against the side of the movable strip 203. At this time, the blade 100 is in a movable state. Then, the first linear drive mechanism drives the moving platform 201 and the positioning mechanism 1 to move in a step-by-step manner, so that the next empty positioning seat 11 moves to the discharge end facing the material conveying rail 202 to receive the next blade 100. The blade 100 that has been positioned moves to the position where one end faces the fixed strip 204. In this way, each blade 100 can enter the positioning groove 111 in sequence. After all blades 100 are in place, the movable plate 203 and the fixed plate 204 are facing each other. Then, the control mechanism moves the movable plate 203, the connecting rod 13 deflects, and the movable plate 203 moves closer to the fixed plate 204. The sides of the movable plate 203 and the fixed plate 204 respectively abut against the two ends of the fixed blade 100. At the same time, the two connecting rods 13 move closer to each other, and the two pressure plates 14 respectively clamp the two sides of the fixed blade 100, so that the positioning mechanism 1 is in the second state (see...). Figure 9 At this time, the positioning groove 111 and the blade 100 are inclined together, so that the cutting surfaces 106 of each blade 100 are coplanar.

[0056] Finally, the second linear drive mechanism drives the power mechanism and the grinding wheel 305 to move linearly, and the grinding wheel 305 will grind the cutting surfaces 106 of each blade 100 in the coplanar state in sequence.

[0057] The implementation principle of Example 3 is as follows: By setting a positioning structure, in the first state, the gap between the two pressure plates 14 is greater than the thickness of the blade 100, so that the blade 100 can move freely into place. In the second state, the deflection linkage between the connecting rod 13, the movable strip 203 and the fixed strip 204 is used to achieve bidirectional limiting of the blade 100. This not only improves the positioning stability of the blade 100, but also improves the positioning accuracy by using multi-point limiting, thereby improving the grinding consistency. Example 4

[0058] The difference between Example 4 and Example 1 or Example 2 is that, as Figure 10 , Figure 11 , Figure 12 As shown, the positioning mechanism 1 includes a movable plate 203 and multiple positioning structures arranged at intervals along the length of the movable plate 203. In this embodiment, the movable plate 203 is the same as in embodiment 1. The positioning structure includes a follower base plate 16, a first fork 17, a second fork 18, and two parallel swing rods 15. The middle part of the first fork 17 and the middle part of the second fork 18 are hinged together. The first fork 17 and the second fork 18 have the same length and are combined in an X shape. Both ends of the first fork 17 are provided with a pivot 12. One end of the pivot 12 of the first fork 17 is simultaneously hinged to one end of one of the swing rods 15 and inserted into the upper surface of the moving platform 201. The other end of the pivot 12 of the first fork 17 is simultaneously hinged to one end of the other swing rod 15 and inserted into the bottom of the movable plate 203.

[0059] Both ends of the second fork 18 are fixed with cylindrical blocks 181, and the end of the swing arm 15 is provided with a T-shaped groove 153 extending along its own length direction. The two cylindrical blocks 181 slide and engage with the T-shaped groove 153 of the corresponding swing arm 15.

[0060] The swing arm 15 is fixed with a vertical plate 151. The two vertical plates 151 are arranged opposite each other, and two frustum-shaped positioning blocks 152 are fixed to the side of the vertical plate 151.

[0061] The follower base plate 16 is made of rubber. One end of the follower base plate 16 away from the movable strip 203 is hinged to the moving platform 201. The other end of the follower base plate 16 is located between two adjacent swing arms 15, and the follower base plate 16 is higher than the first fork 17 and the second fork 18.

[0062] The sides of the two upright plates 151 serve as the opposite groove walls of the positioning groove 111, and the surface of the follower base plate 16 serves as the bottom surface of the positioning groove 111. The positioning groove 111 has a first side opening 113, a second side opening 114 and an upper opening 112 (not shown in the figure). The second side opening 114 is directly opposite the movable strip 203.

[0063] The mobile platform 201 is provided with an arc-shaped damping strip 19 and a limiting block 191. The arc-shaped damping strip 19 is made of rubber, and its top surface is slightly higher than the bottom surface of the swing arm 15. Furthermore, the curvature center of the arc-shaped damping strip 19 is the hinge center between the first fork 17 and the mobile platform 201.

[0064] During grinding, the vibratory feeder arranges the output cutting tool 100 to the feed rail 202. The feeding cylinder and the feeding fork push the cutting tool 100 to move in a stepping motion, and the positioning mechanism 1 is in the first state (see...). Figure 13 The upright plate 151 is perpendicular to the movable strip 203. The distance between the two positioning blocks 152 is greater than the thickness of the blade 100. The first side opening 113 of the positioning groove 111 is aligned with the discharge end of the conveying rail 202. The blade 100 enters the positioning groove 111 of the positioning seat 11 through the first side opening 113 from the discharge end of the conveying rail 202. The bottom surface of the blade 100 abuts against the upper surface of the follower base plate 16. Due to the tilt of the moving platform 201, the blade 100 will continue to move under the action of gravity until one end of the blade 100 abuts against the side of the movable strip 203 through the second side opening 114.

[0065] Then, the first linear drive mechanism drives the moving platform 201 and the positioning mechanism 1 to move in a stepwise manner, causing the next empty positioning seat 11 to move to the discharge end facing the conveyor rail 202 to receive the next blade 100. In this way, each blade 100 can enter the positioning slot 111 in sequence. After each blade 100 is in place, the control mechanism controls the movable strip 203 to move a first distance (see...). Figure 14 During this process, due to the damping of the arc-shaped damping strip 19, one of the swing arms 15 is prevented from deflecting, meaning both swing arms 15 remain perpendicular to the movable plate 203. The force of the movable plate 203 then drives one swing arm 15 closer to the other. The first fork 17 and the second fork 18 fold, and the cylindrical block 181 slides synchronously. The sliding direction is shown in [reference needed]. Figure 14In the direction of the middle arrow, that is, when the upright plate 151 is in a state of being perpendicular to the movable strip 203 and the two upright plates 151 are close to each other, the conical surface of the positioning block 152 abuts against the edge of the mounting hole 102 of the blade 100. Since the follower base plate 16 has a certain degree of flexibility, it provides more displacement freedom for the blade 100. When the conical surface of the positioning block 152 abuts against the edge of the mounting hole 102 of the blade 100, the position of the blade 100 can be finely adjusted through the centering effect, thereby improving the positional accuracy of the blade 100. Furthermore, the mounting hole 102 is the mounting reference part of the blade 100, thereby improving the positional accuracy of the cutting surface 106 of each blade 100 after subsequent assembly.

[0066] Then the control mechanism controls the movable bar 203 to move a second distance (see...). Figure 15 At this point, the positioning structure has been folded to its limit and cannot be folded further. Therefore, the force of the movable strip 203 will overcome the damping of the arc-shaped damping strip 19, causing the upright plate 151 and the blade 100 to deflect around the hinge center of one end of the first fork 17 until the upright plate 151 abuts against the limiting block 191. At this point, the positioning mechanism 1 is in the second state, and the cutting surfaces 106 of each blade 100 are coplanar.

[0067] Finally, the second linear drive mechanism drives the power mechanism and the grinding wheel 305 to move linearly, and the grinding wheel 305 will grind the cutting surfaces 106 of each blade 100 in the coplanar state in sequence.

[0068] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A saw blade grinding device, characterized in that: The system includes a feeding mechanism, a moving platform (201), a positioning mechanism (1), a control mechanism, a first linear drive mechanism, a grinding wheel (305), a power mechanism for driving the grinding wheel (305) to rotate, and a second linear drive mechanism. The feeding mechanism includes a vibratory feeder and an inclined conveying rail (202). The moving platform (201) and the conveying rail (202) have the same inclination angle. The positioning mechanism (1) is mounted on the moving platform (201). The positioning mechanism (1) has multiple linearly spaced positioning grooves (111). The positioning grooves (111) are used to position the blades (100). The first linear drive mechanism is used to drive the moving platform (201) and the positioning mechanism (1) to move in a stepwise manner, so that the positioning mechanism (1) sequentially receives the blades (100) from the feeding mechanism. The control mechanism is used for... The control positioning mechanism (1) switches between its first and second states. When the positioning mechanism (1) is in its first state, the first side opening (113) of the positioning groove (111) is aligned with the discharge end of the feeding mechanism, and the blade (100) is in a movable state. When the positioning mechanism (1) is in its second state, the positioning groove (111) and the blade (100) are inclined together, the cutting surfaces (106) of each blade (100) are coplanar, and the positioning mechanism (1) fixes the blade (100). The driving direction of the second linear drive mechanism is parallel to the moving direction of the moving platform (201). The second linear drive mechanism is used to drive the power mechanism and the grinding wheel (305) to move linearly. The grinding wheel (305) is used to grind the cutting surfaces (106) of each blade (100) in the coplanar state in sequence.

2. The saw chain blade grinding device according to claim 1, characterized in that: The positioning mechanism (1) includes a fixed plate (204), a movable plate (203), and multiple positioning seats (11). Each positioning seat (11) is arranged in parallel. Each positioning seat (11) has a positioning groove (111), which has a first side opening (113), a second side opening (114), and an upper opening (112). The positioning seat (11) is inclined at the same angle as the moving platform (201). The movable plate (203) is perpendicular to the conveying rail (202). The two ends of the seat (11) are hinged to the moving platform (201) and the movable strip (203) respectively. The second side opening (114) faces the movable strip (203). The fixed strip (204) is externally fixed and located on the side away from the movable strip (203) relative to the positioning seat (11). When the positioning mechanism (1) is in the first state, the first side opening (113) of the positioning groove (111) is aligned with the discharge end of the conveying rail (202). The positioning seat (11) is perpendicular to the movable strip (203). The blade (1) 00) The material enters the positioning groove (111) through the first side opening (113) from the discharge end of the conveying rail (202), and one end of the blade (100) abuts against the side of the movable plate (203) through the second side opening (114); the first linear drive mechanism drives the moving platform (201) and the positioning mechanism (1) to move stepwise, so that each blade (100) enters the positioning groove (111) in sequence; after each blade (100) is in place and the moving platform (201) drives the movable plate (203) to move. After the movable plate (203) is positioned opposite the fixed plate (204), the control mechanism controls the movable plate (203) to move, the positioning seat (11) deflects, and the movable plate (203) moves closer to the fixed plate (204), so that the positioning mechanism (1) is in the second state. At this time, the positioning groove (111) and the blade (100) are inclined together, so that the cutting surfaces (106) of each blade (100) are coplanar, and the sides of the movable plate (203) and the fixed plate (204) respectively abut against the two ends of the fixed blade (100).

3. The saw chain blade grinding device according to claim 1, characterized in that: The power mechanism includes a motor (306), a machine arm housing (307), and a gear assembly (308). The grinding wheel (305) is rotatably engaged with one end of the machine arm housing (307), and the other end of the machine arm housing (307) is fixedly connected to the main body of the second linear drive mechanism and the motor (306). The gear assembly (308) is located inside the machine arm housing (307), and the output end of the motor (306) transmits power to the grinding wheel (305) through the gear assembly (308).

4. The saw chain blade grinding device according to claim 1, characterized in that: The positioning mechanism (1) includes a fixed plate (204), a movable plate (203), and multiple positioning structures spaced apart along the length of the movable plate (203). The movable plate (203) is perpendicular to the conveying rail (202). The positioning structure includes two parallel connecting rods (13). The two ends of the connecting rods (13) are hinged to the moving platform (201) and the movable plate (203), respectively. The connecting rods (13) are fixed with pressure plates (14). The two pressure plates (14) are... The side of the moving platform (201) forms the opposite groove wall of the positioning groove (111), and the surface of the moving platform (201) serves as the bottom surface of the positioning groove (111). The positioning groove (111) has a first side opening (113), a second side opening (114) and an upper opening (112). The second side opening (114) is directly opposite the movable strip (203), and the fixed strip (204) is externally fixed and located on the side of the positioning seat (11) away from the movable strip (203).

5. The saw chain blade grinding device according to claim 2 or 4, characterized in that: The control mechanism includes a hydraulic cylinder (301), a transmission rod (302), and connecting arms (303). The hydraulic cylinder (301) is fixed to the moving platform (201), and the extension direction of the hydraulic cylinder (301) is parallel to the movement direction of the moving platform (201). The transmission rod (302) is coaxially fixed to the output end of the hydraulic cylinder (301). Multiple connecting arms (303) are vertically fixed to the side of the movable plate (203). The connecting arms (303) are provided with a waist-shaped hole (304), and the length direction of the waist-shaped hole (304) is perpendicular to the length direction of the transmission rod (302). The transmission rod (302) is fixed with a slider (311), and the slider (311) slides and engages with the waist-shaped hole (304).

6. The saw chain blade grinding device according to claim 2 or 4, characterized in that: The control mechanism includes a hydraulic cylinder (301), a transmission rod (302), and multiple sets of elastic rods (309). The hydraulic cylinder (301) is fixed to the moving platform (201), and the extension and retraction direction of the hydraulic cylinder (301) is parallel to the movement direction of the moving platform (201). The transmission rod (302) is coaxially fixed to the output end of the hydraulic cylinder (301). Multiple sets of elastic rods (309) are vertically fixed to the side of the movable plate (203). Each set of elastic rods (309) includes two elastic rods (309). A round rod (310) is fixed to the transmission rod (302), and the round rod (310) is slidably arranged in the strip-shaped gap formed between the two elastic rods (309).

7. The saw chain blade grinding device according to claim 1, characterized in that: The positioning mechanism (1) includes a movable plate (203) and multiple positioning structures spaced apart along the length of the movable plate (203). The movable plate (203) is perpendicular to the conveying rail (202). The positioning structure includes a follower base plate (16), a first fork (17), a second fork (18), and two parallel swing rods (15). The swing rods (15) are fixed with upright plates (151). The two upright plates (151) are arranged opposite to each other. The middle part of the first fork (17) and the middle part of the second fork (18) are hinged together. The first fork (17) and the second fork (18) are of the same length and are combined in an X shape. The two ends of the first fork (17) are respectively hinged to one end of the two swing arms (15), and one end of the first fork (17) is also hinged to the movable strip (203), and the other end of the first fork (17) is also hinged to the moving platform (201). Both ends of the second fork (18) are fixed with cylindrical blocks (181). The cylindrical block (181) slides in conjunction with the corresponding swing arm (15). One end of the follower base plate (16) away from the movable strip (203) is hinged to the moving platform (201). The other end of the follower base plate (16) is located between two adjacent swing arms (15). The sides of the two upright plates (151) form the opposite groove walls of the positioning groove (111). The surface of the follower base plate (16) serves as the bottom surface of the positioning groove (111). It has a first side opening (113), a second side opening (114) and an upper opening (112), with the second side opening (114) facing the movable strip (203); a frustum-shaped positioning block (152) is fixed on the side of the upright plate (151); the moving platform (201) is provided with an arc-shaped damping strip (19) and a limiting block (191), with the curvature center of the arc-shaped damping strip (19) being the hinge center between the first fork (17) and the moving platform (201).

8. The saw chain blade grinding device according to claim 7, characterized in that: The follower base plate (16) is made of rubber.

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