Knife sharpening structure and machine tool

Abstract

The utility model relates to the field of machine tools, and discloses a knife sharpening structure and a machine tool, the knife sharpening structure comprises a rack, a left-right sliding mechanism, a swing assembly and a polishing mechanism, the left-right sliding mechanism is arranged on the rack, the swing assembly is arranged on the left-right sliding mechanism, and the polishing mechanism is arranged on the left-right sliding mechanism. The left-right sliding mechanism drives the swing assembly to reciprocate in the left-right direction, the grinding mechanism is arranged on the left-right sliding mechanism, the grinding mechanism and the left-right sliding mechanism can rotate relatively, and the swing assembly drives the grinding mechanism to swing. And the grinding mechanism swings relative to the joint where the grinding mechanism rotates relative to the rack, and the grinding mechanism is used for grinding the paperboard cutter. In addition, the machine tool comprises the sharpening structure.

Description

Technical Field

[0001] The utility model relates to the field of machine tools, in particular to a knife sharpening structure and a machine tool. Background Art

[0002] Cardboard cutters can be used to cut cardboard. However, cardboard cutters may become blunt after long-term use, resulting in blunt blades. If the cardboard cutter is blunt and cardboard is still cut, it will affect the quality of the cut paper, so the cardboard cutter needs to be polished. At present, multiple cardboard cutters are usually set up, and multiple cardboard cutters are set side by side. Multiple cardboard cutters can cut the cardboard into multiple columns of cardboard to improve the efficiency of cardboard cutting. However, due to the different positions of each cardboard cutter, it is currently necessary to set up multiple cardboard cutter polishing mechanisms one by one to polish the cardboard cutter. This increases the weight and volume of the overall machine tool, which is not conducive to the miniaturization of the frame. In addition, the production cost of using multiple cardboard cutter polishing mechanisms is also relatively high. Utility Model Content

[0003] The technical problem to be solved by the utility model is to solve at least one of the technical problems mentioned above.

[0004] The solution of the utility model to solve the technical problem is:

[0005] A knife sharpening structure comprises a frame, a left-right sliding mechanism, a swinging assembly and a sharpening mechanism, wherein the left-right sliding mechanism is arranged on the frame, the swinging assembly is arranged on the left-right sliding mechanism, the left-right sliding mechanism drives the swinging assembly to reciprocate in the left-right direction, the sharpening mechanism is arranged on the left-right sliding mechanism, the sharpening mechanism and the left-right sliding mechanism can rotate relative to each other, the swinging assembly drives the sharpening mechanism to swing, so that the sharpening mechanism swings relative to the connection point where the sharpening mechanism and the frame rotate relative to each other, and the sharpening mechanism is used to sharpen a cardboard cutter.

[0006] As a further improvement of the above technical solution, the left and right sliding mechanism includes a sliding frame, left and right slide rails, a slider and a rack, a gear and a motor. The left and right slide rails and the rack are respectively fixed on the frame, the rack and the gear are meshed with each other, the rack extends in the left and right directions, and the left and right slide rails extend in the left and right directions. The fixed part of the motor is fixed on the sliding frame, the slider is fixed on the sliding frame, the slider and the left and right slide rails can be relatively slidably matched and connected, the movable part of the motor is connected to the gear, the motor drives the gear to rotate, and the swing assembly and the grinding mechanism are respectively arranged on the sliding frame.

[0007] As a further improvement of the above technical solution, the grinding mechanism includes a grinding frame, an up and down sliding mechanism and a grinding wheel group, the grinding frame is arranged on the left and right sliding mechanism, the grinding frame and the left and right sliding mechanism are connected by a rotating shaft, so that the grinding frame and the left and right sliding mechanism are relatively rotatably connected, the swing assembly drives the grinding frame to swing, the up and down sliding mechanism is arranged on the grinding frame, the grinding wheel group is arranged on the up and down sliding mechanism, and the up and down sliding mechanism drives the grinding wheel group to slide back and forth.

[0008] As a further improvement of the above technical solution, the up and down sliding mechanism includes a first cylinder, a fixed part of the first cylinder is fixed on the grinding frame, the grinding wheel group is fixed on the movable part of the first cylinder, and the first cylinder drives the grinding wheel group to reciprocate, so that the grinding wheel group is close to or away from the cardboard cutter.

[0009] As a further improvement of the above technical solution, the grinding wheel group includes a mounting seat, a first grinding wheel and a second grinding wheel, the mounting seat is fixed on the movable part of the up and down sliding mechanism, the first grinding wheel is fixed on the mounting seat, the first grinding wheel is arranged in front of the second grinding wheel, the grinding end surface of the first grinding wheel faces the lower right, and the grinding end surface of the second grinding wheel faces the lower left, so that an angle for clamping the cardboard cutter is formed between the grinding surface of the first grinding wheel and the grinding surface of the second grinding wheel.

[0010] As a further improvement of the above technical solution, the first cylinder body and the second cylinder body, one end of the first cylinder body is hinged to the grinding frame, the other end of the first cylinder body is fixedly connected to one end of the second cylinder body, and the other end of the second cylinder body is hinged to the sliding frame.

[0011] The utility model also provides a machine tool, comprising the knife sharpening structure in any of the above technical solutions.

[0012] As a further improvement of the above technical solution, the knife sharpening structure also includes a locking mechanism, which is arranged on the left and right sliding mechanism, and is used to relatively fix the frame and the left and right sliding mechanism.

[0013] As a further improvement of the above technical solution, the locking mechanism includes a latch and a guide cylinder, the guide cylinder is arranged vertically, the latch is arranged in the guide cylinder, the latch and the guide cylinder can slide relative to each other, and a positioning hole is provided on the machine tool, and the positioning hole and the latch are adapted to each other.

[0014] As a further improvement of the above technical solution, the locking mechanism also includes a screw, a connecting hole is provided on the guide cylinder, the connecting hole penetrates the wall thickness of the guide cylinder, the screw is threadedly matched with the connecting hole, and a limiting groove is provided on the pin, the limiting groove extends along the length direction of the pin, and the screw extends into the limiting groove.

[0015] The beneficial effect of the utility model is that when in use, the external paper cutters are arranged along the left and right directions. When one of the paper cutters needs to be polished, the left and right sliding mechanism can be used to drive the polishing mechanism to slide along the left and right directions, and the polishing mechanism polishes the paper cutter. By setting the swing component, the swing angle of the polishing mechanism can be adjusted, so that the polishing mechanism can be adjusted to polish the paper cutter from different directions and angles. It is applicable to many environments and has strong adaptability. In addition, by driving the polishing mechanism to move left and right through the left and right mechanisms, different paper cutters in the same column arranged left and right can be polished. Different from the prior art, the utility model can effectively reduce the number of polishing mechanisms arranged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a partial structural schematic diagram of the machine tool of the utility model;

[0017] Figure 2 It is a front view of the knife sharpening structure of the utility model;

[0018] Figure 3 The utility model Figure 2 Axonometric section view at AA in the figure;

[0019] Figure 4 It is a side schematic diagram of the knife sharpening structure of the utility model;

[0020] Figure 5 The utility model Figure 4 Axonometric section view at BB in the figure;

[0021] Figure 6 The utility model is axonometric Figure 1 ;

[0022] Figure 7 The utility model is axonometric Figure 2 .

[0023] In the accompanying drawings: 1-frame, 21-left and right slide rails, 22-slider, 23-motor, 24-sliding frame, 25-gear, 311-first cylinder body, 312-second cylinder body, 41-grinding frame, 42-first cylinder, 43-first grinding wheel, 44-second grinding wheel, 51-latch, 511-limiting groove, 52-guide cylinder, 53-screw, 6-paper cutter. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the above briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of them. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0025] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the utility model can be combined interchangeably without conflicting with each other.

[0026] Reference Figures 1 to 7 A knife sharpening structure comprises a frame 1, a left-right sliding mechanism, a swinging assembly and a sharpening mechanism, wherein the left-right sliding mechanism is arranged on the frame 1, the swinging assembly is arranged on the left-right sliding mechanism, the left-right sliding mechanism drives the swinging assembly to reciprocate along the left-right direction, the sharpening mechanism is arranged on the left-right sliding mechanism, the sharpening mechanism and the left-right sliding mechanism can rotate relative to each other, the swinging assembly drives the sharpening mechanism to swing, so that the sharpening mechanism swings relative to the connection where the sharpening mechanism and the frame 1 rotate relative to each other, and the sharpening mechanism is used to sharpen a cardboard cutter.

[0027] As can be seen from the above, when in use, the external paper cutters 6 are arranged along the left and right directions. When one of the paper cutters 6 needs to be polished, the left and right sliding mechanism can drive the polishing mechanism to slide along the left and right directions, and the polishing mechanism polishes the paper cutter 6. Through the setting of the swing component, the swing angle of the polishing mechanism can be adjusted, so as to adjust the polishing mechanism to polish the paper cutter 6 from different directions and angles. It is applicable to many environments and has strong adaptability. In addition, by driving the polishing mechanism to move left and right through the left and right mechanisms, different paper cutters 6 arranged in the same column on the left and right can be polished. Different from the prior art, the utility model can effectively reduce the number of polishing mechanisms arranged.

[0028] The left and right sliding mechanism is used to drive the grinding mechanism and the swing assembly to move in the left and right directions, so that a grinding mechanism is used to grind the paper cutters 6 arranged in the same row on the left and right sides. In some embodiments, the left and right sliding mechanism includes a sliding frame 24, left and right slide rails 21, a slider 22 and a rack (not shown in the drawings), a gear 25 and a motor 23. The left and right slide rails 21 and the rack are respectively fixed on the frame 1, the rack and the gear 25 are meshed with each other, the rack extends in the left and right directions, the left and right slide rails 21 extend in the left and right directions, the fixed part of the motor 23 is fixed on the sliding frame 24, the slider 22 is fixed on the sliding frame 24, the slider 22 and the left and right slide rails 21 can be relatively slidably matched and connected, the movable part of the motor 23 is connected to the gear 25, the motor 23 drives the gear 25 to rotate, and the swing assembly and the grinding mechanism are respectively arranged on the sliding frame 24. When left and right sliding is required, the gear 25 is driven to rotate by the motor 23. Under the meshing of the gear 25 and the rack, the slider 22 fixed on the sliding frame 24 moves left and right along the left and right slide rails 21. At this time, the grinding mechanism and the swing assembly arranged on the sliding frame 24 also move left and right with the sliding frame 24, so that the left and right sliding mechanisms drive the grinding mechanism and the swing assembly to move in the left and right directions.

[0029] The grinding mechanism is used to grind the paper cutter 6 on the frame 1. In some embodiments, the grinding mechanism includes a grinding frame 41, an up-and-down sliding mechanism and a grinding wheel group, the grinding frame 41 is arranged on the left-and-right sliding mechanism, the grinding frame 41 and the left-and-right sliding mechanism are connected by a rotating shaft, so that the grinding frame 41 and the left-and-right sliding mechanism are relatively rotatably connected, the swing component drives the grinding frame 41 to swing, the up-and-down sliding mechanism is arranged on the grinding frame 41, the grinding wheel group is arranged on the up-and-down sliding mechanism, and the up-and-down sliding mechanism drives the grinding wheel group to slide back and forth. When the left-and-right sliding mechanism drives the grinding wheel group on the grinding mechanism to align with a paper cutter 6 that needs to be polished, the swing angle of the grinding wheel group is adjusted by the swing component so that the grinding wheel group can align with the paper cutter 6. Then, the up-and-down sliding mechanism drives the grinding wheel set to move toward the paper cutter 6 to be polished, so that the grinding wheel set abuts against the paper cutter 6 to be polished, so as to carry out the grinding work of the paper cutter 6.

[0030] Of course, in actual use, the paper cutters 6 can also be arranged in two rows, each row of paper cutters 6 having a plurality of paper cutters 6 arranged left and right. In this case, the grinding mechanism can be arranged between the two rows of paper cutters 6, and the front and rear swing angle of the grinding mechanism can be adjusted by the swing assembly so as to grind the paper cutters 6 in the two rows.

[0031] The up-and-down sliding mechanism is used to drive the grinding wheel group to approach or move away from the paper cutter 6 to be polished, so that the grinding wheel group can be attached to or detached from the paper cutter 6. In some embodiments, the up-and-down sliding mechanism includes a first cylinder 42, the fixed part of the first cylinder 42 is fixed to the polishing frame 41, the grinding wheel group is fixed to the movable part of the first cylinder 42, and the first cylinder 42 drives the grinding wheel group to reciprocate, so that the grinding wheel group approaches or moves away from the paperboard cutter. When in use, the grinding wheel group is driven by the first cylinder 42 to move close to or away from the paper cutter 6 to be polished.

[0032] Optionally, the first cylinder 42 is a slide cylinder.

[0033] In actual use, the paper cutter 6 is usually configured to be a circular saw blade in order to grind the paper cutter 6. In some embodiments, the grinding wheel set includes a mounting seat, a first grinding wheel 43 and a second grinding wheel 44, the mounting seat is fixed on the movable part of the up-and-down sliding mechanism, the first grinding wheel 43 is fixed on the mounting seat, the first grinding wheel 43 is arranged in front of the second grinding wheel 44, the grinding end face of the first grinding wheel 43 faces the lower right, and the grinding end face of the second grinding wheel 44 faces the lower left, so that an angle for clamping the paperboard cutter is formed between the grinding surface of the first grinding wheel 43 and the grinding surface of the second grinding wheel 44. When in use, the axis of the external paper cutter 6 extends in the left-right direction. The angle formed between the first grinding wheel 43 and the second grinding wheel 44 can be used to clamp the paper cutter 6. At this time, after the swing assembly adjusts the angle, the grinding surfaces of the first grinding wheel 43 and the second grinding wheel 44 can both be against the paper cutter 6. The paper cutter 6 is relatively rotated with the first grinding wheel 43 and the second grinding wheel 44, thereby grinding the paper cutter 6. In actual use, the external paper cutter 6 usually has a power source, that is, the paper cutter 6 can rotate around its own axis; thus, during the rotation of the paper cutter 6 around its own axis, grinding can be achieved.

[0034] The swing assembly is used to adjust the orientation angle of the grinding mechanism so that it can be pressed against the paper cutter 6 that needs to be polished in different directions, thereby meeting the grinding requirements of the paper cutter 6. In some embodiments, the first cylinder 311 and the second cylinder 312, one end of the first cylinder 311 is hinged to the grinding frame 41, the other end of the first cylinder 311 is fixedly connected to one end of the second cylinder 312, and the other end of the second cylinder 312 is hinged to the sliding frame 24. Optionally, the telescopic directions of the first cylinder 311 and the second cylinder 312 are collinearly arranged. In this way, under the telescopic action of the first cylinder 31 and / or the second cylinder, the distance between the ends of the first cylinder 31 and the second cylinder facing each other changes, which will cause the sliding frame 24 to swing around the axis of the rotating shaft.

[0035] In actual use, the paper cutters 6 are arranged in two rows, front and back. There are three grinding stations for grinding the paper cutters 66. In station one, when the first cylinder 311 and the second cylinder 312 are both in the extended state, the front row of paper cutters 6 can be ground. In station two, when the first cylinder 311 and the second cylinder 312 are both in the retracted state, the rear row of paper cutters 6 can be ground. In station three, when the first cylinder 311 is in the extended state and the second cylinder 312 is in the retracted state, or the second cylinder 312 is in the extended state and the first cylinder 311 is in the retracted state, the grinding frame 41 stays between the front and back rows of paper cutters 6.

[0036] Optionally, the first cylinder body 311 is an oil cylinder, a gas cylinder or an electric cylinder. Optionally, the second cylinder body 312 is an oil cylinder, a gas cylinder or an electric cylinder.

[0037] The utility model also provides a machine tool, including a knife sharpening structure in any of the above embodiments. Since the above content has been described in detail with respect to the knife sharpening structure, a person skilled in the art should be able to understand it in conjunction with the drawings in the specification, so the knife sharpening structure will not be described in detail here. In practice, a paper cutter 6 is provided on the machine tool, and preferably, a plurality of paper cutters 6 are provided, and the plurality of paper cutters 6 are arranged at intervals in the left-right direction.

[0038] The paper cutter 6 will generate a certain vibration during the grinding process. In order to avoid the grinding mechanism from being offset during the vibration process, resulting in an unsatisfactory grinding effect. In some embodiments, the grinding structure also includes a locking mechanism, which is arranged on the left and right sliding mechanism, and the locking mechanism is used to relatively fix the frame 1 and the left and right sliding mechanism. The frame 1 and the left and right sliding mechanism are relatively fixed by the locking mechanism, which limits the movement of the left and right sliding mechanism in the left and right directions during the grinding process.

[0039] The locking mechanism is used to lock the frame 1 and the left-right sliding mechanism. In some embodiments, the locking mechanism includes a latch 51 and a guide cylinder 52. The guide cylinder 52 is arranged vertically, and the latch 51 is arranged in the guide cylinder 52. The latch 51 and the guide cylinder 52 can slide relative to each other. The machine tool is provided with a positioning hole (not shown in the drawings), and the positioning hole and the latch 51 are adapted. When it is necessary to lock the frame 1 and the sliding frame 24, the latch 51 in the latch 51 can be moved downward and inserted into the positioning hole, thereby locking the sliding frame 24. When the sliding frame 24 needs to slide left and right, the latch 51 can be withdrawn from the positioning hole.

[0040] In actual use, an electric push rod may be further provided on the guide cylinder 52 , and the electric push rod drives the latch 51 to move up and down along the guide cylinder 52 , thereby further improving the automation level of the machine tool.

[0041] In order to facilitate the limiting and locking of the latch 51. In some embodiments, the locking mechanism further includes a screw 53, a connecting hole is provided on the guide cylinder 52, the connecting hole penetrates the wall thickness of the guide cylinder 52, the screw 53 is threadedly matched with the connecting hole, and a limiting groove 511 is provided on the latch 51, the limiting groove 511 extends along the length direction of the latch 51, and the screw 53 extends into the limiting groove 511. The length of the limiting groove 511 can limit the relative movement distance of the screw 53 and the latch 51 in the up and down directions. When the latch 51 needs to be locked, the operator can make the screw 53 press against the bottom surface of the limiting groove 511, so as to achieve the locking and fixing of the latch 51.

[0042] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A knife sharpening structure, comprising a frame (1), characterized in that: The invention also comprises a left-right sliding mechanism, a swinging assembly and a grinding mechanism, wherein the left-right sliding mechanism is arranged on the frame (1), the swinging assembly is arranged on the left-right sliding mechanism, the left-right sliding mechanism drives the swinging assembly to reciprocate in the left-right direction, the grinding mechanism is arranged on the left-right sliding mechanism, the grinding mechanism and the left-right sliding mechanism can rotate relative to each other, the swinging assembly drives the grinding mechanism to swing, so that the grinding mechanism swings relative to the connection point where the grinding mechanism and the frame (1) rotate relative to each other, and the grinding mechanism is used to grind the cardboard cutter.

2. The knife sharpening structure according to claim 1, characterized in that: The left-right sliding mechanism comprises a sliding frame (24), left-right sliding rails (21), a slider (22), a rack, a gear (25) and a motor (23). The left-right sliding rails (21) and the rack are respectively fixed on the frame (1). The rack and the gear (25) are meshed with each other. The rack extends in the left-right direction. The left-right sliding rails (21) extend in the left-right direction. The fixed part of the motor (23) is fixed on the sliding frame (24). The slider (22) is fixed on the sliding frame (24). The slider (22) and the left-right sliding rails (21) are relatively slidably matched and connected. The movable part of the motor (23) is connected to the gear (25). The motor (23) drives the gear (25) to rotate. The swing assembly and the grinding mechanism are respectively arranged on the sliding frame (24).

3. The knife sharpening structure according to claim 2, characterized in that: The grinding mechanism comprises a grinding frame (41), an up-and-down sliding mechanism and a grinding wheel group; the grinding frame (41) is arranged on the left-and-right sliding mechanism; the grinding frame (41) and the left-and-right sliding mechanism are connected via a rotating shaft, so that the grinding frame (41) and the left-and-right sliding mechanism are relatively rotatably connected; the swing assembly drives the grinding frame (41) to swing; the up-and-down sliding mechanism is arranged on the grinding frame (41); the grinding wheel group is arranged on the up-and-down sliding mechanism; and the up-and-down sliding mechanism drives the grinding wheel group to slide back and forth.

4. The knife sharpening structure according to claim 3, characterized in that: The up-and-down sliding mechanism comprises a first cylinder (42), a fixed portion of the first cylinder (42) is fixed on the grinding frame (41), the grinding wheel group is fixed on the movable portion of the first cylinder (42), and the first cylinder (42) drives the grinding wheel group to reciprocate, so that the grinding wheel group approaches or moves away from the cardboard cutter.

5. The knife sharpening structure according to claim 3, characterized in that: The grinding wheel assembly comprises a mounting seat, a first grinding wheel (43) and a second grinding wheel (44); the mounting seat is fixed on the movable part of the up-and-down sliding mechanism; the first grinding wheel (43) is fixed on the mounting seat; the first grinding wheel (43) is arranged in front of the second grinding wheel (44); the grinding end surface of the first grinding wheel (43) faces the lower right, and the grinding end surface of the second grinding wheel (44) faces the lower left, so that an angle for clamping a cardboard cutter is formed between the grinding surfaces of the first grinding wheel (43) and the second grinding wheel (44).

6. The knife sharpening structure according to claim 4, characterized in that: The swing assembly comprises a first cylinder body (311) and a second cylinder body (312); one end of the first cylinder body (311) is hinged to the grinding frame (41); the other end of the first cylinder body (311) is fixedly connected to one end of the second cylinder body (312); and the other end of the second cylinder body (312) is hinged to the sliding frame (24).

7. A machine tool, characterized in that: The utility model comprises a knife sharpening structure as described in any one of claims 1 to 6.

8. The machine tool according to claim 7, characterized in that: The knife sharpening structure also includes a locking mechanism, which is arranged on the left-right sliding mechanism and is used to relatively fix the frame (1) and the left-right sliding mechanism.

9. The machine tool according to claim 8, characterized in that The locking mechanism comprises a latch (51) and a guide cylinder (52), wherein the guide cylinder (52) is arranged vertically, the latch (51) is arranged in the guide cylinder (52), the latch (51) and the guide cylinder (52) can slide relative to each other, and a positioning hole is provided on the machine tool, wherein the positioning hole and the latch (51) are matched.

10. The machine tool according to claim 9, characterized in that The locking mechanism further comprises a screw (53), a connecting hole is provided on the guide cylinder (52), the connecting hole penetrates the wall thickness of the guide cylinder (52), the screw (53) and the connecting hole are threadedly matched, a limiting groove (511) is provided on the latch pin (51), the limiting groove (511) extends along the length direction of the latch pin (51), and the screw (53) extends into the limiting groove (511).

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