Online knife grinding device

Abstract

The utility model relates to the technical field of cutter sharpening of cutting beds, and discloses an online cutter sharpening device which comprises a main support, a cutter and a shell. A power assembly is arranged on the main support, and a knife sharpening assembly is arranged at the output end of the power assembly. The power assembly comprises a motor and a rotating shaft which are arranged on the two sides of the main support respectively. A first transmission module driving the rotating shaft to rotate is arranged between an output shaft of the motor and the outer side of the rotating shaft. The knife sharpening assembly comprises a swing arm rotationally connected with the rotating shaft and a knife sharpening grinding wheel set rotationally connected with the swing arm, and the knife sharpening grinding wheel set is arranged at the end, away from the rotating shaft, of the swing arm. The swing arm is further provided with a limiting piece which can abut against the outer side of the shell. A second transmission module for driving the swing arm to swing and driving the knife grinding wheel set to rotate is arranged between the knife grinding wheel set and the outer side of the rotating shaft; the motor drives the knife grinding wheel set to rotate through the first transmission module and the second transmission module. The number of power equipment needed by the online knife grinding device can be reduced, and implementation and use are convenient.

Description

Technical Field

[0001] This utility model relates to the field of cutting bed sharpening technology, specifically to an online sharpening device. Background Technology

[0002] When a cutting machine cuts fabric, the cutting blade needs to reciprocate relative to the fabric to cut it. Over time, the blade will inevitably wear down, becoming dull and affecting the cutting quality. Therefore, the cutting blade needs to be sharpened after a certain period of use. The common method is to disassemble the blade before sharpening it. While this method can ensure the quality of sharpening, it is relatively cumbersome.

[0003] Currently, the utility model patent with announcement number CN206357002U discloses an automatic knife sharpening device for cutting beds. It can use the extension and retraction of a cylinder to drive the motor mounting base and the sharpening wheel to move back and forth to sharpen the cutting bed blades. By setting a main control module, it can also perform sharpening automatically. It has the characteristics of convenient sharpening, simple operation, and high degree of automation, and can meet the needs of automatic knife sharpening.

[0004] While existing technical solutions eliminate the need to disassemble and grind the cutting blade and meet the requirements for automatic blade sharpening, they require multiple motors, increasing the overall footprint of the device. Furthermore, the stroke drive distance of the cylinders needs to be calibrated periodically; otherwise, the actual stroke distance may be too large or too small, affecting the actual sharpening effect. Therefore, this application provides an online blade sharpening device to solve the above problems. Utility Model Content

[0005] Based on the above description, this utility model provides an online knife sharpening device to solve the problem in the prior art that multiple motors are required to achieve online knife sharpening.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: an online knife sharpening device, including a main support, a cutting knife and a housing;

[0007] The main support is equipped with a power component, and the output end of the power component is equipped with a sharpening component;

[0008] The power assembly includes a motor and a rotating shaft respectively located on both sides of the main support. A first transmission module that drives the rotating shaft to rotate is provided between the output shaft of the motor and the outer side of the rotating shaft.

[0009] The sharpening assembly includes a swing arm rotatably connected to a rotating shaft, and a sharpening wheel assembly rotatably connected to the swing arm, with the sharpening wheel assembly located at the end of the swing arm away from the rotating shaft.

[0010] The swing arm is also provided with a limiting component, which can abut against the outside of the outer shell;

[0011] The grinding wheel assembly is provided with a drive swing arm between the outer side of the rotating shaft and a second transmission module that drives the grinding wheel assembly to rotate.

[0012] The motor drives the grinding wheel assembly to rotate through the first transmission module and the second transmission module.

[0013] The above technical solution enables the swinging motion of the swing arm and the sharpening operation of the grinding wheel set to be realized using a single motor.

[0014] Based on the above technical solution, the present invention can be further improved as follows.

[0015] Furthermore, the rotating shaft includes a shaft rod and a sleeve rotatably connected to the outside of the main support, with the sleeve rotatably connected to the outside of the shaft rod.

[0016] The above technical solution allows both the shaft and the sleeve to rotate relative to the main support, and the sleeve to rotate relative to the shaft.

[0017] Furthermore, the swing arm includes a fixing block fixed to the outside of the sleeve, an extension plate fixed to the fixing block, and a limiting member fixed to one side of the back of the extension plate.

[0018] The above technical solution can restrict the position of the extension plate by limiting the fit between the outer shell and the limiting component.

[0019] Furthermore, the limiting member is an L-shaped limiting block, and the side of the limiting block near the outer shell can abut against the outer side of the outer shell.

[0020] The above technical solution enables the limiting block to be physically limited when it is in contact with the outer side of the shell.

[0021] Furthermore, the grinding wheel assembly includes two grinding wheels and a tensioning wheel that are rotatably connected to the extension plate, and a third pulley is fitted on one end of the outer side of the shaft.

[0022] The above technical solution allows for the grinding of both sides of the blade using two grinding wheels.

[0023] Furthermore, the second transmission module includes a second belt wound around the outside of the two grinding wheels, a tensioning wheel and the third pulley, and the second belt has a quadrilateral shape after being wound.

[0024] The above technical solution enables the second belt to simultaneously drive the grinding wheel, tensioning wheel, and third pulley to rotate.

[0025] Furthermore, the tensioning wheel and the third pulley are each provided with two transmission grooves on their outer sides, and the grinding wheel is provided with a transmission groove on its outer side.

[0026] The above technical solution allows for the limiting of the second transmission module via the transmission groove and the transfer groove.

[0027] Furthermore, the second belt is wound between the inside of the four drive slots and the two transmission slots.

[0028] The above technical solution allows the transmission groove and the transmission slot to limit the second belt, and the four transmission grooves allow the second belt to wrap around the tensioning pulley and the third pulley twice, increasing friction and making the transmission more stable.

[0029] Furthermore, the top of the main support is provided with a tool module that drives the cutting blade and the housing to move linearly;

[0030] The front of the outer casing has a through hole for the cutting blade to pass through.

[0031] Through the above technical solution, the cutting tool module can drive the cutting tool and the housing to move linearly, so that the housing can move to a position on the same vertical plane as the limiting block, thereby allowing the cutting tool to be ground by the grinding wheel.

[0032] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0033] 1. It can reduce the number of power devices required for online sharpening devices, thereby reducing the actual installation space required and limiting the space occupied by the cutting module on the cutting bed; at the same time, it is not necessary to perform periodic calibration of the linear stroke drive device, only to ensure that the limit block can abut against the shell, reducing the amount of maintenance work and making it convenient to implement and use.

[0034] 2. Through the cooperation of the sleeve and the fixing block, when the second belt is driven, the extension plate is moved closer to the cutting blade. After being limited by the limiting block, the grinding wheel can directly contact the cutting edge of the cutting blade for grinding. By rotating in the opposite direction, the extension plate can move the grinding wheel away from the cutting blade. This simple structural cooperation can achieve the swinging movement of approaching or moving away from the cutting blade. At the same time, there is no need for frequent calibration. When calibration is required, it is only necessary to ensure that the grinding wheel can contact the cutting edge of the cutting blade when the limiting block and the outer shell are in contact. It is very simple and convenient. Attached Figure Description

[0035] Figure 1 A schematic diagram of the overall structure of an online knife sharpening device provided in an embodiment of this utility model;

[0036] Figure 2 This is a schematic diagram of the sharpening assembly in a non-sharpening state in an embodiment of this utility model;

[0037] Figure 3 This is a schematic diagram of the sharpening assembly in the sharpening state in an embodiment of the present invention;

[0038] Figure 4 This is an isometric view of the overall structure of an embodiment of this utility model;

[0039] Figure 5 As an embodiment of this utility model Figure 4 A diagram showing the view from below;

[0040] Figure 6 This is a schematic diagram of the connection structure of the sleeve in an embodiment of this utility model.

[0041] Reference numerals: 1. Main support; 2. Tool module; 3. Cutting blade; 4. Housing;

[0042] 5. Power assembly; 51. Motor; 52. First pulley; 53. Bearing housing; 54. Shaft; 55. Sleeve; 56. Second pulley; 57. First belt; 58. Through hole; 59. Connecting port;

[0043] 6. Grinding assembly; 61. Fixing block; 62. Extension plate; 63. Limiting block; 64. Grinding wheel; 65. Tensioning wheel; 66. Third pulley; 67. Second belt. Detailed Implementation

[0044] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0046] Example: An online knife sharpening device includes a main support 1, a cutting blade 3, and a housing 4. A power assembly 5 is mounted on the main support 1, and a sharpening assembly 6 is mounted at the output end of the power assembly 5. The power assembly 5 includes a motor 51 and a rotating shaft respectively located on both sides of the main support 1. A first transmission module is provided between the output shaft of the motor 51 and the outer side of the rotating shaft to drive the rotating shaft to rotate. The sharpening assembly 6 includes a swing arm rotatably connected to the rotating shaft, and a sharpening wheel assembly rotatably connected to the swing arm. The sharpening wheel assembly is located at the end of the swing arm away from the rotating shaft. A limiting member is also provided on the swing arm, which can abut against the outer side of the housing 4. A second transmission module is provided between the sharpening wheel assembly and the outer side of the rotating shaft to drive the swing arm to swing and to drive the sharpening wheel assembly to rotate. The motor 51 drives the sharpening wheel assembly to rotate through the first and second transmission modules.

[0047] The above technical solution enables the swinging motion of the swing arm and the sharpening operation of the grinding wheel set to be realized using a single motor 51.

[0048] refer to Figure 5 and Figure 6 The rotating shaft includes a shaft 54 ​​and a sleeve 55 rotatably connected to the outside of the main support 1. The sleeve 55 is rotatably connected to the outside of the shaft 54, allowing both the shaft 54 ​​and the sleeve 55 to rotate relative to the main support 1, and the sleeve 55 to rotate relative to the shaft 54.

[0049] It should be noted that two bearing seats 53 are fixed on the top of the main support 1. The outer sides of the sleeve 55 and the shaft 54 ​​are rotatably connected to the inner sides of the two bearing seats 53 through bearings. Both ends of the sleeve 55 are open and the sleeve 55 is located between the two bearing seats 53 on opposite sides. The first transmission module includes a second pulley 56 sleeved on the back of the outer side of the shaft 54 ​​and a first pulley 52 sleeved on the output shaft of the motor 51. A first belt 57 is connected between the outer sides of the first pulley 52 and the second pulley 56.

[0050] It should also be noted that the top of the main support 1 has a through hole 58 and a connecting port 59 with the left side open, and the through hole 58 allows the first belt 57 to pass through.

[0051] In use, the motor 51 drives the first pulley 52 to rotate, and under the transmission action of the first belt 57, it drives the second pulley 56 to rotate, thereby causing the shaft 54 ​​to rotate.

[0052] refer to Figure 4 and Figure 5 The swing arm includes a fixing block 61 fixed to the outside of the sleeve 55, an extension plate 62 fixed to the fixing block 61, and a limiting member fixed to one side of the back of the extension plate 62. The position of the extension plate 62 can be restricted by the limiting cooperation between the outer shell 4 and the limiting member.

[0053] It should be noted that the connecting port 59 allows the fixed block 61 to pass through and move.

[0054] refer to Figure 4 and Figure 5 The limiting component is an L-shaped limiting block 63. The side of the limiting block 63 closest to the outer shell 4 can abut against the outer side of the outer shell 4, so that the limiting block 63 can physically limit the movement when it is in contact with the outer side of the outer shell 4.

[0055] refer to Figure 4 and Figure 5 The grinding wheel assembly includes two grinding wheels 64 and a tensioning wheel 65 that are rotatably connected to the extension plate 62. A third pulley 66 is fitted on one end of the outer side of the shaft 54. The two grinding wheels 64 can grind both sides of the blade.

[0056] refer to Figure 2 The second transmission module includes a second belt 67 wound around the outside of two grinding wheels 64, a tensioning wheel 65 and a third pulley 66. The second belt 67 is quadrilateral in shape after being wound. The second belt 67 can drive the grinding wheels 64, the tensioning wheel 65 and the third pulley 66 to rotate simultaneously.

[0057] refer to Figure 5 The tensioning wheel 65 and the third pulley 66 are each provided with two transmission grooves on their outer sides, and the grinding wheel 64 is provided with a transmission groove on its outer side. The second belt 67 is wound between the inner sides of the four transmission grooves and the two transmission grooves, so that the transmission grooves and transmission grooves can limit the second belt 67. Moreover, the four transmission grooves allow the second belt 67 to be wound around the tensioning wheel 65 and the third pulley 66 twice, increasing the friction and making the transmission more stable.

[0058] It should be noted that the second belt 67 can be wound twice around the outside of the tensioning wheel 65 and the third pulley 66, and once around the outside of the grinding wheel 64, through four transmission grooves and two transmission grooves; moreover, the tensioning wheel 65 can further tighten the outer ring of the second belt 67, so that the second belt 67 can drive the two grinding wheels 64, one tensioning wheel 65 and the third pulley 66 to rotate during transmission.

[0059] refer to Figure 2 and Figure 3In use, shaft 54 ​​drives the third pulley 66 to rotate. Under the winding friction transmission of the second belt 67 and the tensioning action of the tensioning wheel 65, the two grinding wheels 64 are driven to rotate. At this time, since the grinding wheels 64 are not subjected to the abutment reaction force, the grinding wheels 64 will drive the extension plate 62 and the fixing block 61 to rotate under the action of the sleeve 55, bringing them closer to the cutting blade 3. Under the abutment and limiting action between the limiting block 63 and the outer shell 4, the swinging action can be stopped, and the grinding wheels 64 and the cutting blade 3 can be brought into contact, so that the cutting blade 3 can be ground under the rotation of the grinding wheels 64. After grinding is completed, the motor 51 is driven in reverse, so that the above transmission action is transmitted to the opposite side, so that the grinding wheels 64 are moved away from the cutting blade 3.

[0060] refer to Figure 1 and Figure 4 The top of the main support 1 is provided with a tool module 2 that drives the cutting blade 3 and the housing 4 to move linearly; the front of the housing 4 is provided with a through hole for the cutting blade 3 to pass through. The tool module 2 can drive the cutting blade 3 and the housing 4 to move linearly, so that the housing 4 can move to a position on the same vertical plane as the limiting block 63, so that the cutting blade 3 can be ground by the grinding wheel 64.

[0061] refer to Figure 3 It should be noted that when grinding the cutting blade 3, the cutting blade 3 and the outer shell 4 need to be moved by the cutting tool module 2 to the end closest to the grinding wheel 64 so that the grinding wheel 64 can effectively grind the cutting blade 3.

[0062] It should also be noted that the tool module 2 is a device that can drive the cutting blade 3 and the housing 4 to move linearly. This can be achieved by existing linear drive devices such as electric push rods or cylinders, which are commonly used longitudinal drive devices on existing cutting beds, so they will not be described in detail. Both the motor 51 and the tool module 2 are electrically connected to the main controller and the power supply. The electrical connection technology is a publicly available technology. The main controller is a PLC controller, which can be implemented by simple programming by those skilled in the art, and all of these are publicly available technologies, so they will not be described in detail.

[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An online knife sharpening device, comprising a main support (1), a cutting blade (3), and a housing (4); Its features are, The main support (1) is provided with a power assembly (5), and the output end of the power assembly (5) is provided with a sharpening assembly (6); The power assembly (5) includes a motor (51) and a rotating shaft respectively located on both sides of the main support (1). A first transmission module that drives the rotating shaft to rotate is provided between the output shaft of the motor (51) and the outer side of the rotating shaft. The sharpening assembly (6) includes a swing arm rotatably connected to a rotating shaft, and a sharpening wheel assembly rotatably connected to the swing arm, wherein the sharpening wheel assembly is located at the end of the swing arm away from the rotating shaft; The swing arm is also provided with a limiting member, which can abut against the outside of the outer shell (4); The grinding wheel assembly is provided with a drive swing arm between the outer side of the rotating shaft and a second transmission module that drives the grinding wheel assembly to rotate. The motor (51) drives the grinding wheel assembly to rotate through the first transmission module and the second transmission module.

2. The online sharpening device according to claim 1, characterized in that, The rotating shaft includes a shaft (54) and a sleeve (55) rotatably connected to the outside of the main support (1), and the sleeve (55) is rotatably connected to the outside of the shaft (54).

3. The online sharpening device according to claim 2, characterized in that, The swing arm includes a fixing block (61) fixed to the outside of the sleeve (55) and an extension plate (62) fixed to the fixing block (61). The limiting member is fixed to one side of the back of the extension plate (62).

4. The online sharpening device according to claim 3, characterized in that, The limiting member is an L-shaped limiting block (63), and the side of the limiting block (63) near the outer shell (4) can abut against the outer side of the outer shell (4).

5. The online sharpening device according to claim 2, characterized in that, The grinding wheel assembly includes two grinding wheels (64) and a tensioning wheel (65) rotatably connected to the extension plate (62), and a third pulley (66) is fitted on one end of the outer side of the shaft (54).

6. The online sharpening device according to claim 5, characterized in that, The second transmission module includes a second belt (67) wound around the outside of two grinding wheels (64), a tensioning wheel (65) and a third pulley (66), the second belt (67) having a quadrilateral shape after being wound.

7. The online sharpening device according to claim 6, characterized in that, The tensioning wheel (65) and the third pulley (66) are each provided with two transmission grooves on their outer sides, and the grinding wheel (64) is provided with a transmission groove on its outer side.

8. The online sharpening device according to claim 7, characterized in that, The second belt (67) is wound between the inside of the four drive slots and the two transmission slots.

9. The online sharpening device according to claim 1, characterized in that, The main support (1) is equipped with a tool module (2) at the top, which drives the cutting blade (3) and the outer shell (4) to move linearly; The outer shell (4) has a through hole on the front for the cutting blade (3) to pass through.

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