A chamfering cutter structure and a grooving machine applying the chamfering cutter structure

Abstract

The present invention discloses a chamfering cutter structure and a grooving machine applying the chamfering cutter structure, which includes a fixed seat and a blade assembly. A tool holder is slidably connected to the fixed seat, and a locking structure for locking the tool holder to the fixed seat is provided on the tool holder. The blade assembly is fixed to the tool holder. Through the arrangement of the fixed seat, the tool holder and the blade assembly, the tool holder is slidably connected to the fixed seat, and a locking structure capable of quickly locking the tool holder to the fixed seat is provided on the tool holder. The blade assembly is fixed to the tool holder. Among them, in actual application, the fixed seat is fixed on the cutter head of the grooving machine. When it is necessary to adjust the position of the blade assembly on the cutter head, the tool holder and the fixed seat can slide relative to each other by controlling the locking structure, and then the blade assembly can be adjusted. When the position adjustment of the blade assembly is completed, the locking structure is driven to achieve quick locking between the tool holder and the fixed seat, making it convenient to adjust.

Description

Technical Field

[0001] The present invention relates to the field of carton production equipment, and particularly relates to a corner cutting knife structure and a grooving machine applying the corner cutting knife structure. Background Art

[0002] A corrugated carton grooving machine is a device for grooving the edges during the production of corrugated cartons. In the production of corrugated cartons, it is necessary to use the cutting knife of the grooving machine to groove and cut corners of the corrugated cardboard. Among them, a corner cutting knife structure is required when cutting corners.

[0003] In the existing grooving machine, the corner cutting knife structure includes two knife seats fixed on the cutter head and blades fixed on the knife seats. Among them, the blades on the two knife seats are arranged corresponding to the corner cutting positions on both sides of the cardboard. That is, during the rotation process, after the blade on one knife seat cuts the cardboard, the cutter head is rotated so that the blade on the other knife seat cuts the cardboard. The arc distance between the blades on the two knife seats corresponds to the two sides of the cardboard that need to be cut. The existing knife seats are all fixed on the cutter head by screws, so the distance between the two blades cannot be adjusted. If the distance between the two blades needs to be adjusted, the knife seat needs to be replaced, which makes the adjustment inconvenient.

[0004] It can be seen that the existing technology still needs to be improved. Summary of the Invention

[0005] In view of the deficiencies of the above-mentioned existing technology, the purpose of the present invention is to provide a corner cutting knife structure and a grooving machine applying the corner cutting knife structure, aiming to solve the problem that the position adjustment of the corner cutting knife structure of the existing grooving machine is inconvenient.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A corner cutting knife structure includes a fixed seat and a blade assembly. A knife seat is slidably connected to the fixed seat, and a locking structure for locking the knife seat on the fixed seat is provided on the knife seat. The blade assembly is fixed on the knife seat.

[0008] In the corner cutting knife structure, the locking structure includes a telescopic member fixed on the knife seat and a locking block fixed on the telescopic end of the telescopic member. The fixed seat is provided with card slots on both sides of the chute for cooperating with the locking block.

[0009] In the corner cutting knife structure, the telescopic member includes an outer sleeve, a compression spring, and a telescopic rod. The telescopic rod passes through the central hole of the outer sleeve, and the telescopic rod is slidably connected to the outer sleeve. The locking block is fixed at one end of the telescopic rod. A limiting rod is fixed at the end of the telescopic rod away from the locking block. A convex ring is provided at one end of the outer sleeve close to the locking block. The compression spring is sleeved outside the outer shell, and both ends are respectively abutted against the convex ring and the limiting rod.

[0010] In the described chamfering cutter structure, a guiding groove is provided at one end of the outer sleeve away from the convex ring, and the limiting rod passes through the guiding groove and abuts against the compression spring on the outer side of the outer sleeve.

[0011] In the described chamfering cutter structure, the tool holder includes a mounting plate and a pressing plate detachably connected to the mounting plate. A first stepped through hole is provided on the mounting plate. The outer sleeve is placed in the first stepped through hole. The convex ring of the outer sleeve abuts against the step on the first stepped through hole. One end of the outer sleeve away from the convex ring abuts against the pressing plate. The pressing plate is provided with an avoidance hole for the telescopic rod to pass through; the mounting plate is slidably connected to the fixed seat, and the blade assembly is fixed on the pressing plate.

[0012] In the described chamfering cutter structure, the cross-section of the end of the outer sleeve away from the convex ring is non-circular, and the pressing plate is provided with a second stepped through hole that mates with the non-circular end of the outer sleeve.

[0013] In the described chamfering cutter structure, the fixed seat is provided with a sliding groove, and one side of the mounting plate is slidably connected to the sliding groove.

[0014] In the described chamfering cutter structure, the sliding groove is T-shaped, and the mounting plate is provided with a connecting portion that mates with the sliding groove.

[0015] A grooving machine includes the described chamfering cutter structure, and includes a machine frame, a rotating shaft rotatably connected to the machine frame, and a cutter head fixed to the rotating shaft. The chamfering cutter structure is fixed to the cutter head. One end of the rotating shaft is drivingly connected to a driving assembly, and the driving assembly is fixed to the machine frame.

[0016] In the described grooving machine, it further includes a telescopic driving member fixed to the machine frame. When the telescopic end of the telescopic driving member is in the extended state, the telescopic end of the telescopic driving member can push the telescopic rod of the telescopic member to move, so that the locking block is separated from the card slot.

[0017] Beneficial effects: Through the settings of the fixed seat, the tool holder and the blade assembly, the tool holder is slidably connected to the fixed seat, and a locking structure that can quickly lock the tool holder to the fixed seat is provided on the tool holder. The blade assembly is fixed to the tool holder. Among them, in actual application, the fixed seat is fixed to the cutter head of the grooving machine. When it is necessary to adjust the position of the blade assembly on the cutter head, by controlling the locking structure, the tool holder and the fixed seat can slide relative to each other, and then the blade assembly can be adjusted. When the position adjustment of the blade assembly is completed, the locking structure is driven to achieve quick locking between the tool holder and the fixed seat, making it convenient to adjust. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the grooving machine at the position where the chamfering cutter structure is installed.

[0019] Figure 2 It is Figure 1 the front view of

[0020] Figure 3 is Figure 2 the left view of

[0021] Figure 4 is the front view of the corner cutting tool structure.

[0022] Figure 5 is Figure 4 the sectional view of

[0023] Figure 6 is Figure 5 the sectional view taken at A - A.

[0024] Figure 7 is the top view of the corner cutting tool structure.

[0025] Figure 8 is the schematic diagram of the locking structure.

[0026] Figure 9 is the schematic diagram of the structure of the pressing plate.

[0027] Figure 10 is the schematic diagram of the structure of the grooving machine, in which only part of the corner cutting tool structure and the cutter head are drawn.

[0028] Figure 11 is Figure 10 the partial enlarged view at A.

[0029] Description of main component symbols: 210 - fixed seat, 211 - sliding groove, 212 - clamping groove, 220 - tool holder, 221 - mounting plate, 222 - pressing plate, 223 - first stepped through - hole, 224 - second stepped through - hole, 230 - first rotating shaft, 231 - locking nut, 240 - connecting block, 260 - elastic pad, 250 - second rotating shaft, 251 - limiting block, 252 - mounting seat, 270 - locking structure, 271 - locking block, 272 - telescopic member, 273 - compression spring, 274 - outer sleeve, 275 - telescopic rod, 276 - limiting rod, 277 - convex ring, 278 - guiding groove, 281 - first blade, 282 - second blade, 100 - frame, 110 - rotating shaft, 111 - cutter head, 120 - roller, 121 - rubber pad, 130 - telescopic driving member, 140 - driving assembly, 200 - corner cutting tool structure. Detailed implementation manners

[0030] The present invention provides a corner cutting tool structure and a grooving machine applying the corner cutting tool structure. To make the purpose, technical solution and effects of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the protection scope of the present invention.

[0031] Refer to Figures 1-3 andFigure 10 A grooving machine, comprising a frame 100, a rotating shaft 110 rotatably connected to the frame 100, and a cutter head 111 fixed to the rotating shaft 110. It further includes a chamfering cutter structure 200, and the chamfering cutter structure 200 is fixed to the cutter head 111. One end of the rotating shaft 110 is drivingly connected to a driving assembly 140, and the driving assembly 140 is fixed to the frame 100. The driving assembly 140 is preferably but not limited to a motor. When in use, the grooving machine is provided with two sets of cutting tool assemblies composed of the rotating shaft 110, the cutter head 111, the chamfering cutter structure 200 and the driving assembly on the frame 100. When the cardboard passes between the two sets of cutting tool assemblies, the driving assembly drives the rotating shaft 110 to rotate, so that the cutters of the chamfering cutter structures 200 on the two sets of cutting tool assemblies cut out corresponding grooves or corners on the cardboard. Or the grooving machine is provided with a set of cutting tool assemblies composed of the rotating shaft 110, the cutter head 111, the chamfering cutter structure 200 and the driving assembly on the frame 100, and a roller 120 with an adhesive pad 121 is arranged outside the cutting tool assembly. When the cardboard passes between the cutting tool assembly and the roller 120, the driving assembly drives the rotating shaft 110 to rotate, so that the cutters of the chamfering cutter structure 200 on the cutting tool assembly cut out corresponding grooves or corners on the cardboard.

[0032] A chamfering cutter structure, comprising a fixing seat 210 and a blade assembly for cutting the cardboard. A tool holder 220 is slidably connected to the fixing seat 210, and a locking structure 270 for locking the tool holder 220 to the fixing seat 210 is arranged on the tool holder 220. The blade assembly is fixed to the tool holder. Among them, the fixing seat 210 is fixed to the cutter head 111, and the tool holder 220 is slidably connected to the fixing seat 210. After the locking structure 270 releases the fixing seat 210, the tool holder 220 can slide relative to the fixing seat 210. When it moves to the required position, it is locked by the locking structure 270.

[0033] Refer to Figures 3-7 In practical applications, usually 2 chamfering cutter structures 200 are installed on the cutter head 111, and the 2 chamfering cutter structures 200 respectively cut the chamfering positions on the front and rear sides of the cardboard in the conveying direction. When 2 chamfering cutter structures 200 are installed on the cutter head 111, the distance between the first blade 281 and the distance between the second blade 282 between the 2 chamfering cutter structures 200 can be adjusted through this structure, so as to realize adjusting the distance between the chamfering positions on the front and rear sides of the cardboard in the conveying direction.

[0034] Preferably, the fixing seat 210 is provided with a chute 211, and the tool holder 220 is slidably connected to the chute. Therefore, the tool holder 220 can only move within the range restricted by the chute.

[0035] Refer to Figures 4-8, in a preferred embodiment, the locking structure 270 includes a telescopic member 272 fixed to the tool holder 220, and a locking block 271 fixed to the telescopic end of the telescopic member 272. The fixed seat 210 is provided with clamping grooves 212 on both sides of the sliding groove 211 for cooperating with the locking block 271. When the telescopic end of the telescopic member 272 expands and contracts, the locking block 271 switches between a separated state and a latched state with the clamping groove 212, that is, when the locking block 271 is within the clamping groove 212, the fixation between the tool holder 220 and the fixed seat 210 is achieved.

[0036] In this embodiment, the telescopic member 272 includes an outer sleeve 274, a compression spring 273, and a telescopic rod 275. The telescopic rod 275 passes through the central hole of the outer sleeve 274, and the telescopic rod 275 is slidably connected to the outer sleeve 274. The locking block 271 is fixed to one end of the telescopic rod 275. A limiting rod 276 is fixed to the telescopic rod 275 at the end away from the locking block 271. The outer sleeve 274 is provided with a convex ring 277 at the end close to the locking block 271. The compression spring 273 is sleeved outside the outer shell, and both ends are respectively abutted against the convex ring 277 and the limiting rod 276. Among them, the outer sleeve 274 is fixed to the tool holder 220. When the locking block 271 is within the clamping groove 212, under the restoring force of the compression spring 273, the locking block 271 is pressed within the clamping groove 212. Therefore, the locking block 271 will not move out of the clamping groove 212, so the fixation between the tool holder 220 and the fixed seat 210 can be achieved. When the position of the tool holder 220 needs to be adjusted, an external force is used to overcome the restoring force of the compression spring 273 to push the telescopic rod 275 to move, so that the locking block 271 moves out of the clamping groove 212, and then relative movement can be generated between the tool holder 220 and the fixed seat 210, realizing the position adjustment of the tool holder 220 on the fixed seat 210.

[0037] Preferably, the outer sleeve 274 is provided with a guiding groove 278 at the end away from the convex ring 277. The length direction of the guiding groove 278 is parallel to the axial direction of the outer sleeve 274. The limiting rod 276 passes through the guiding groove 278 and abuts against the compression spring 273 outside the outer sleeve 274. The width of the guiding groove 278 is equal to the diameter of the limiting rod 276. Among them, through the setting of the guiding groove 278, the telescopic rod 275 cannot rotate, so that when the position of the tool holder 220 is adjusted, the locking block 271 can quickly move to the position of the clamping groove 212 and latch with the clamping groove 212, making it more convenient to adjust the position of the tool holder 220. Moreover, the limiting rod 276 can only move within the range restricted by the guiding groove 278, that is, the movement range of the telescopic rod 275 is restricted, so that the overall structure of the locking structure 270 is more compact.

[0038] In a preferred embodiment, the tool holder 220 is provided with a through hole, and the tool holder 220 is provided with a positioning groove on the side of the through hole. A positioning block is fixed on the telescopic member 272. The telescopic member 272 is inserted into the through hole, and the positioning block is placed in the positioning groove. Among them, the positioning block is provided on the outer sleeve 274. The outer sleeve 274 is installed in the through hole of the tool holder 220, and the positioning block is placed in the positioning groove. Therefore, the outer sleeve 274 cannot rotate, and the position of the guide groove 278 is determined, and then the position of the locking block 271 relative to the outer sleeve 274 is determined.

[0039] Refer to Figures 4-7 and Figure 9 , in a preferred embodiment, the tool holder 220 includes a mounting plate 221 and a pressing plate 222 fixedly connected to the mounting plate 221. One side of the mounting plate is slidably connected to the chute. The mounting plate 221 is provided with a first stepped through hole 223. The outer sleeve 274 is placed in the first stepped through hole 223. The convex ring 277 of the outer sleeve 274 abuts against the step on the first stepped through hole 223. One end of the outer sleeve 274 away from the convex ring 277 abuts against the pressing plate 222. The pressing plate 222 is provided with an avoidance hole for the telescopic rod 275 to pass through. Among them, the outer sleeve 274 is installed in the first stepped through hole 223, and then the outer sleeve 274 is pressed tightly by using the pressing plate 222 to realize the fixation of the outer sleeve 274. The pressing plate 222 and the mounting plate 221 are preferably connected by screws. Of course, in actual applications, they can also be connected by buckling or welding and other connection methods for fixation.

[0040] In this embodiment, the mounting plate 221 is slidably connected to the fixed seat 210. The first blade 281 is fixed on the pressing plate 222. The second rotating shaft 250, the limiting block 251 and the elastic pad 260 are fixed on the mounting plate 221.

[0041] Preferably, the cross section of one end of the outer sleeve 274 away from the convex ring 277 is non-circular. The pressing plate 222 is provided with a second stepped through hole 224 that cooperates with the non-circular end of the outer sleeve 274. Through the setting of the second stepped through hole 224, the pressing plate 222 can not only play a role in pressing the outer sleeve 274, but also play a role in positioning the outer sleeve 274, that is, the second stepped through hole 224 is set to a shape that matches the position of the non-circular cross section of the outer sleeve 274. After the pressing plate 222 is installed on the mounting plate 221, the outer wall of the non-circular cross section position of the outer sleeve 274 fits with the inner wall of the second stepped through hole 224, so that the outer sleeve 274 cannot rotate. Therefore, the position of the guide groove 278 on the outer sleeve 274 is determined, and then the position of the locking block 271 relative to the outer sleeve 274 is determined, so as to play a positioning role. Among them, the second stepped through hole 224 includes a first stepped hole and a second stepped hole. The first stepped hole cooperates with the non-circular end of the outer sleeve 274, and the second stepped hole forms the avoidance hole. The avoidance hole can pass through the telescopic rod 275 or a tool for pushing the telescopic rod 275 to move.

[0042] In a preferred embodiment, the chute 211 is in a T shape, and the tool holder 220 is provided with a connecting portion that cooperates with the chute 211. The connecting portion of the tool holder 220 is placed in the chute 211, and the width of the connecting portion is equal to the width of the chute 211. Therefore, the tool holder 220 and the fixed seat 210 can only slide relative to each other but will not shake. Preferably, the length of the locking block 271 is greater than the width of the chute 211. After the locking structure 270 is installed on the tool holder 220, since the telescopic rod 275 cannot rotate, an integral structure that can move relative to each other but will not separate is formed between the tool holder 220 and the fixed seat 210.

[0043] To facilitate the machining of the chute 211 and the card slot 212, the fixed seat 210 can be set into two parts that are symmetric about the length direction of the chute 211, and then the two parts are fixed together by screws. Among them, the fixed seat 210 and the tool holder 220 are both set in an arc shape, and their centers coincide with the axis of the rotating shaft 110, so that when the position of the tool holder 220 is adjusted, the distances between the first blade 281, the second blade 282 and the axis of the rotating shaft 110 will not change.

[0044] Refer to Figures 4-7 , the blade assembly includes a first blade 281. The tool holder 220 is provided with a first rotating shaft 230. A connecting block 240 is rotatably connected to the first rotating shaft 230. The first blade 281 is fixed on one side surface of the connecting block 240. The length direction of the first blade 281 is set at an acute angle or an obtuse angle with the axis of the first rotating shaft 230. An elastic pad 260 is provided on the side of the connecting block 240 away from the first blade 281, and the elastic pad 260 is fixed on the tool holder 220.

[0045] In the above, when cutting a bevel on the cardboard, it is necessary to set the length direction of the first blade 281 at an acute angle or an obtuse angle with the axis of the first rotating shaft 230. Therefore, the distances from each point of the first blade 281 to the axis of the rotating shaft 110 are not equal; in other words, referring to Figure 2 and Figure 3 , the straight line where the highest point of the rubber pad 121 is located intersects with the length direction of the first blade 281. In this application, the connecting block 240 is connected to the tool holder 220 through the first rotating shaft 230, and the connecting block 240 can rotate around the rotating shaft 110. Therefore, during use, one end of the first blade 281 first contacts the cardboard, and then gradually changes to the other end contacting the cardboard. During this change process, when the force-bearing position of the first blade 281 changes, relative rotation occurs between the connecting block 240 and the first rotating shaft 230, so that the distance between the position where the cutting edge of the first blade 281 is located during cardboard cutting and the axis of the rotating shaft 110 is equal. Therefore, during the process of cutting the cardboard, the first blade 281 will not cut the rubber pad 121 on the roller 120, and thus will not affect the service life of the rubber pad 121.

[0046] Among them, due to the process of the first blade 281 cutting the cardboard, the reaction force of the cardboard on the first blade 281 is mainly concentrated on the first rotating shaft 230 and the tool holder 220. The first rotating shaft 230 is a solid structure, so it has greater strength and is not easily damaged. And the elastic pad 260 placed between the connecting block 240 and the tool holder 220 can reduce a certain impulse of the first blade 281 and improve the service life of the corner cutting knife structure 200. During the process of the first blade 281 cutting the cardboard, the middle part and one end of the first blade 281 are respectively supported by the first rotating shaft 230 and the tool holder 220, making the corner cutting knife structure 200 not easily damaged.

[0047] Specifically, the elastic pad 260 can keep the connecting block 240 in the equilibrium position without external force. In this embodiment, the tool holder 220 can be directly fixed on the tool disc 111, and the first blade 281 is placed outside the circumferential surface of the tool disc 111.

[0048] In a preferred embodiment, a second rotating shaft 250 is provided on the tool holder 220, and a mounting seat 252 is rotatably connected to the second rotating shaft 250. The first rotating shaft 230 is fixed on the mounting seat 252, and the axis of the second rotating shaft 250 is perpendicular to the axis of the first rotating shaft 230. Among them, through the settings of the first rotating shaft 230 and the second rotating shaft 250, the first blade 281 can swing around the first rotating shaft 230 and the second rotating shaft 250, and when the first blade 281 swings around the first rotating shaft 230 and the second rotating shaft 250, it can press on the elastic pad 260. During use, the first blade 281 receives a reaction force from the cardboard in the direction of the axis of the rotating shaft 110, causing the first blade 281 to swing around the first rotating shaft 230 and the second rotating shaft 250. Therefore, this reaction force is applied to the tool holder 220 through the connecting block 240 and the elastic pad 260, and the tool holder 220 has a relatively large size in the radial direction, so it is not easily damaged.

[0049] Since during use, the first blade 281 cannot swing greatly away from the axis of the rotating shaft 110 along the second rotating shaft 250, a limit block 251 for restricting the swing of the mounting seat 252 is fixed on the tool holder 220. The limit block 251 is used to keep the connecting block 240 in contact with the elastic pad 260, and the elastic pad 260 also has a certain compressible range. Therefore, when the first blade 281 is not stressed, the connecting block 240 is pushed by the restoring force of the elastic pad 260 towards the limit block 251 side, so the first blade 281 will not swing randomly around the second rotating shaft 250 when not stressed. When the first blade 281 is stressed, the pressure of the connecting block 240 on the elastic pad 260 increases, so that the first blade 281 swings around the second rotating shaft 250, and the force received by the first blade 281 is applied to the tool holder 220.

[0050] Among the above, the elastic pad 260 can be a rubber pad 121, a silica gel pad 121, etc.

[0051] In a preferred embodiment, a locking nut 231 for fixedly connecting the connecting block 240 is threadedly connected to one end of the first rotating shaft 230 away from the mounting seat 252. In this embodiment, external threads are provided at one end of the first rotating shaft 230 away from the mounting seat 252. The locking nut 231 is connected to the external threads on the first rotating shaft 230. The connecting block 240 is sleeved on the first rotating shaft 230, and the connecting block 240 is arranged between the locking nut 231 and the mounting seat 252. Therefore, by screwing on the locking nut 231, the installation of the connecting block 240 is realized, and the connecting block 240 is prevented from falling off the first rotating shaft 230.

[0052] In a preferred embodiment, the blade assembly further includes a second blade 282. The length direction of the second blade 282 is parallel to the axis of the rotating shaft 110. In other words, the straight line where the highest point of the rubber pad 121 is located is parallel to the length direction of the first blade 281. Therefore, when the second blade 282 rotates to the position for cutting the cardboard, the blade positions of the second blade 282 are just all located at the highest point position of the rubber pad 121, that is, there is no bevel edge at the edge of the cardboard after being cut by the second blade 282. Among them, the second blade 282 is used for shredding the paper scraps that need to be removed or have been removed, so that the volume of the paper scraps is smaller, which is convenient for discharging and avoids being stuck inside the grooving machine and affecting normal production.

[0053] A first installation groove is formed on the connecting block 240, and the first blade 281 is installed in the first installation groove. A first screw hole communicating with the first installation groove is further formed on the connecting block 240 on the side away from the second rotating shaft 250, and a first fixing screw for pressing the first blade 281 is threadedly connected in the first screw hole. Among them, after the first blade 281 is installed in the first installation groove, by tightening the first fixing screw, the first fixing screw presses the side surface of the first blade 281 to realize the fixation of the first blade 281. Similarly, a second installation groove is provided on the side surface of the pressing plate 222, the second blade 282 is installed in the second installation groove, a second screw hole communicating with the second installation groove is provided on the side surface of the pressing plate 222, and a second fixing screw for pressing the second blade 282 is threadedly connected in the second screw hole.

[0054] Refer to Figure 10 and Figure 11 , in the grooving machine of the present application, it further includes a telescopic driving member 130 fixed on the machine frame 100. When the telescopic end of the telescopic driving member 130 is in the extended state, the telescopic end of the telescopic driving member 130 can push the telescopic rod 275 of the telescopic member 270 to move, so that the locking block 271 is separated from the card slot 212. The telescopic driving member 130 can be but is not limited to an air cylinder, an electric cylinder, and a hydraulic cylinder.

[0055] Specifically, the driving assembly 140 that drives the rotation of the driving rotating shaft 110 is equipped with an encoder that can detect the position of the rotating shaft. When it is necessary to adjust the relative position between the fixed seat 210 and the tool holder 220, the driving assembly 140 drives the rotating shaft 110 to rotate, so that the position of the telescopic rod 275 of the telescopic member 270 is just aligned with the telescopic end of the telescopic driving member 130. Then, the telescopic end of the telescopic driving member 130 is controlled to extend, pushing the telescopic rod 275 of the telescopic member to move, separating the locking block 271 from the card slot 212. Then, the driving assembly 140 continues to drive the rotating shaft 110 to rotate. Since the telescopic end of the telescopic driving member pushes the telescopic member and then is placed inside the outer sleeve where the telescopic member is installed, the tool holder will not rotate with the fixed seat, realizing the adjustment of the relative position between the tool holder and the fixed seat. And through the setting of the telescopic driving member, the automatic adjustment of the position of the corner cutting tool is realized.

[0056] When automatically adjusting the position of the corner cutting tool, it is necessary to input the distance that the corner cutting tool needs to move or the angle that the rotating shaft needs to rotate in the control system of the grooving machine, and then start the above-mentioned automatic adjustment steps for adjustment. If the distance or angle that needs to be adjusted exceeds the sliding groove, the position where the fixed seat is connected to the tool disc can be manually adjusted, and then the position of the encoder corresponding to the rotating shaft is repositioned.

[0057] In the present invention, a first rotating shaft 230 is provided on the tool holder 220. A connecting block 240 is rotatably connected to the first rotating shaft 230. The first cutting blade 281 is fixed on one side surface of the connecting block 240. The length direction of the first cutting blade 281 is set at an acute angle or an obtuse angle with the axis of the first rotating shaft 230. An elastic pad 260 is provided on the side of the connecting block 240 away from the first cutting blade 281. The elastic pad 260 is fixed on the tool holder 220. During the use process, one end of the first cutting blade 281 first contacts the cardboard, and then gradually changes to the other end contacting the cardboard. During this changing process, when the force-bearing position of the first cutting blade 281 changes, relative rotation occurs between the connecting block 240 and the first rotating shaft 230, so that the distance between the position where the cutting edge of the first cutting blade 281 is located when cutting the cardboard and the axis of the rotating shaft 110 is equal. Therefore, during the process of cutting the cardboard, the first cutting blade 281 will not cut the rubber pad 121 on the roller 120, and thus will not affect the service life of the rubber pad 121.

[0058] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0059] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions and inventive concepts of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A chamfering knife structure, comprising a fixed seat and a blade assembly, characterized in that, A tool holder is slidably connected to a fixed seat. A locking structure for locking the tool holder to the fixed seat is provided on the tool holder, and a blade assembly is fixed to the tool holder. The fixed seat is provided with a chute. The locking structure includes a telescopic member fixed to the tool holder and a locking block fixed to the telescopic end of the telescopic member. The fixed seat is provided with clamping grooves on both sides of the chute for cooperating with the locking block. The telescopic member includes an outer sleeve, a compression spring, and a telescopic rod. The telescopic rod passes through the central hole of the outer sleeve, and the telescopic rod is slidably connected to the outer sleeve. The locking block is fixed to one end of the telescopic rod. A limiting rod is fixed to the telescopic rod at the end away from the locking block. A convex ring is provided at one end of the outer sleeve close to the locking block. The compression spring is sleeved outside the outer sleeve, and both ends are respectively abutted against the convex ring and the limiting rod.

2. The corner cutting knife structure according to claim 1, characterized in that, A guiding groove is provided at one end of the outer sleeve away from the convex ring. The limiting rod passes through the guiding groove and abuts against the compression spring outside the outer sleeve.

3. The chamfering cutter structure according to claim 2, wherein The tool holder includes a mounting plate and a pressing plate detachably connected to the mounting plate. A first stepped through hole is provided on the mounting plate. The outer sleeve is placed in the first stepped through hole. The convex ring of the outer sleeve abuts against the step on the first stepped through hole. One end of the outer sleeve away from the convex ring abuts against the pressing plate. The pressing plate is provided with an avoidance hole for the telescopic rod to pass through. The mounting plate is slidably connected to the fixed seat, and the blade assembly is fixed to the pressing plate.

4. The corner cutting knife structure according to claim 3, characterized in that The cross section of one end of the outer sleeve away from the convex ring is non-circular. The pressing plate is provided with a second stepped through hole for cooperating with the non-circular end of the outer sleeve.

5. The corner cutting knife structure according to claim 3, characterized in that, One side of the mounting plate is slidably connected to the chute.

6. The corner cutting knife structure according to claim 5, wherein, The chute is T-shaped, and the mounting plate is provided with a connecting portion for cooperating with the chute.

7. A grooving machine, characterized in that, It includes a chamfering tool structure according to any one of claims 1-6, including a machine frame, a rotating shaft rotatably connected to the machine frame, and a cutter head fixed to the rotating shaft. The chamfering tool structure is fixed to the cutter head. One end of the rotating shaft is drivingly connected to a driving assembly, and the driving assembly is fixed to the machine frame.

8. The grooving machine according to claim 7, wherein, It further includes a telescopic driving member fixed to the machine frame. When the telescopic end of the telescopic driving member is in the extended state, the telescopic end of the telescopic driving member can push the telescopic rod of the telescopic member to move, so that the locking block is separated from the clamping groove.

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