CN114227387A - Method for polishing rubber pad of die cutting unit - Google Patents
Method for polishing rubber pad of die cutting unit Download PDFInfo
- Publication number
- CN114227387A CN114227387A CN202111425587.7A CN202111425587A CN114227387A CN 114227387 A CN114227387 A CN 114227387A CN 202111425587 A CN202111425587 A CN 202111425587A CN 114227387 A CN114227387 A CN 114227387A
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- Prior art keywords
- assembly
- driving
- rubber mat
- grinding
- driving assembly
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/12—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B7/30—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding plastics
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a method for coping a rubber mat of a die cutting unit, which relates to the field of paperboard printing equipment, wherein a first driving assembly drives the rubber mat to rotate circumferentially, a second driving assembly drives a distance detector to move axially along the rubber mat, the distance between the surface of the whole rubber mat and the distance detector is obtained, and the maximum distance between the surface of the rubber mat and the distance detector is converted into coping feed amount S1 for driving the coping assembly; then driving the grinding assembly to grind the rubber pad; therefore, when the rubber mat is polished, the second driving assembly is firstly utilized to drive the mounting plate to move, so that the distance detector can detect all points on the rubber mat, the polishing amount required by the rubber mat can be accurately obtained, then the third driving assembly and the second driving assembly are controlled to drive the polishing assembly to move and complete polishing, and the polishing precision is improved.
Description
The application is a divisional application with the application number of 202111037289.0, the application date of 2021.09.06 and the name of 'automatic grinding device and method for grinding rubber cushion of cutting unit'.
Technical Field
The invention relates to the field of paperboard printing equipment, in particular to an automatic grinding device and a method for grinding a rubber pad of a cutting unit.
Background
In the production of the carton, corresponding patterns or characters need to be printed on the paperboard firstly, then the positions of the paperboard corresponding to the material needing to be removed are cut through a die cutting unit of a printing machine, and corresponding creases are pressed out, so that the paperboard can be folded into the carton.
The die cutting unit comprises a die cutting knife and a roller, a rubber pad is sleeved on the roller, the paperboard passes through the space between the die cutting knife and the roller, and when the cutting edge of the die cutting knife is pressed on the paperboard, the paperboard can be cut off, but a certain amount of abrasion can be generated on the rubber pad. After long-time use, the surface of the rubber pad is not flat any more, the shearing effect of the paperboard is influenced, and the paperboard cannot be cut off. Therefore, the surface of the rubber pad needs to be polished.
In the prior art, a grinding roller is used for grinding a rubber mat, referring to fig. 1, the length of the grinding roller 1 ' is greater than that of the rubber mat 1.5 ', an 11KW three-phase asynchronous motor is used for driving the grinding roller to rotate and grind through belt transmission, and then a 0.5KW servo motor speed reducer drives two spiral lifters 2 ' to move radially and feed and grind. When the feeding grinding roller is pressed on the rubber mat, the feeding amount is judged by feeding back the pressure between the grinding roller and the rubber mat by detecting the current of the 11KW three-phase asynchronous motor, the lowest position can not be ground by adopting the change of the current of the motor as the basis, and the rubber mat is also in a concave arc shape, so that the grinding precision is not high.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide an automatic grinding device and a method for grinding a rubber pad of a die cutting unit, and aims to solve the problem that the grinding precision of the conventional automatic grinding device is not high.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic grinding device is arranged on the side face of a die cutting unit of a printing machine, wherein the die cutting unit of the printing machine comprises a roller, a first driving assembly and a rubber pad, wherein two ends of the roller are rotatably connected with a rack of the printing machine; the automatic grinding device comprises a first guide rail, two ends of the first guide rail are fixedly connected with a rack of the printing machine, an installation plate is connected onto the first guide rail in a sliding mode, and a second driving assembly used for driving the installation plate to move along the length direction of the first guide rail is arranged between the installation plate and the first guide rail; the polishing device comprises a mounting plate, a connecting plate, a third driving assembly, a polishing assembly and a polishing wheel, wherein the mounting plate is connected with the connecting plate in a sliding manner, the third driving assembly is arranged between the mounting plate and the connecting plate and used for driving the connecting plate to move, the direction in which the third driving assembly drives the connecting plate to move is perpendicular to the direction in which the second driving assembly drives the mounting plate to move, the polishing assembly is fixed on the connecting plate and comprises a fourth driving assembly and the polishing wheel, the fourth driving assembly is fixed on the connecting plate, the polishing wheel is rotatably connected to the connecting plate, and the fourth driving assembly is in transmission connection with the polishing wheel; and a distance detector is fixed on the connecting plate or the mounting plate, is arranged outside the grinding assembly and faces the rubber mat.
In the automatic grinding device, the second driving assembly comprises a rack fixed on the first guide rail, a first driving motor fixed on the mounting plate and a gear fixed on an output shaft of the first driving motor, and the gear is meshed with the rack; the third driving assembly comprises a second driving motor and a worm and gear structure which are fixed on the mounting plate, an output shaft of the second driving motor is connected with an input end of the worm and gear structure, and an output end of the worm and gear structure is connected with the connecting plate.
In the automatic grinding device, a lifting assembly is arranged on a connecting plate or a mounting plate fixedly connected with the distance detector, a baffle is fixed at the output end of the lifting assembly, and the baffle driven by the lifting assembly can be shielded in front of the distance detector.
In the automatic grinding device, the rack comprises a cross beam and wall plates fixed at two ends of the cross beam, and the first guide rail and the rack are fixed on the cross beam.
In the automatic grinding device, a second guide rail is fixed on the mounting plate, and the connecting plate is in sliding connection with the mounting plate through the second guide rail.
In the automatic grinding device, a first belt pulley is fixed on an output shaft of the fourth driving component, a second belt pulley is coaxially fixed on one side of the grinding wheel, and a transmission belt is connected between the first belt pulley and the second belt pulley.
The method for grinding the rubber pad of the die cutting unit by using the automatic grinding device comprises the following steps: the first driving assembly drives the rubber mat to rotate circumferentially, and the second driving assembly drives the distance detector to move axially along the rubber mat, so that the distance between the surface of the whole rubber mat and the distance detector is obtained; converting the maximum distance between the obtained rubber pad surface and the distance detector into a sharpening feed amount S1 for driving the sharpening assembly; and driving the grinding assembly to grind the rubber pad.
In the method for polishing the rubber mat of the die cutting unit, the step of obtaining the distance between the whole rubber mat and the distance detector comprises the following steps: the second driving assembly is reset to the starting position D1, the first driving assembly is in the starting state, and the second driving assembly is started in the positive direction; the second driving assembly drives the distance detector to move to a set starting detection position D2 to start reading data of the distance detector; the second driving assembly drives the distance detector to move to a set ending detection position D3, and data reading of the distance detector is ended; the second drive assembly is stopped; the step of driving the grinding assembly to grind the rubber pad comprises the following steps: the third driving assembly drives the coping assembly to move towards the direction close to the rubber mat by a corresponding coping feed amount S1; the second driving assembly rotates reversely, meanwhile, the fourth driving assembly starts up until the grinding assembly moves to a set starting detection position D2 from the distance detector, the fourth driving assembly stops rotating, and the third driving assembly drives the grinding assembly to move towards the position far away from the rubber mat by the grinding feeding amount S1; the second drive assembly continues to rotate in the reverse direction until the second drive assembly reaches the starting position D1.
In the method for polishing the rubber pad of the die cutting unit, a lifting assembly is mounted on a connecting plate or a mounting plate fixedly connected with the distance detector, a baffle is fixed at the output end of the lifting assembly, and when the second driving assembly drives the distance detector to move to a set detection starting position D2, the lifting assembly drives the baffle to descend; when the second driving component is started and drives the distance detector to move to the set end detection position D3, the lifting component drives the baffle to ascend.
In the method for polishing the rubber mat of the die cutting unit, before the second driving assembly is started in the forward direction, or before the second driving assembly drives the distance detector to move to the set detection starting position D2 and starts to read data of the distance detector, the third driving assembly drives the polishing assembly to move to the direction close to the rubber mat by the set distance S2; and after the third driving assembly drives the grinding assembly to move the grinding feed amount S1 away from the rubber mat, the third driving assembly continues to drive the grinding assembly to move the set distance S2 away from the rubber mat.
Has the advantages that: in the automatic sharpening device mainly comprising a first guide rail, a mounting plate, a connecting plate, a distance detector, a second driving component for driving the mounting plate to move and a third driving component for driving the connecting plate to move, the mounting plate is connected on a cross beam of the printing machine through a first guide rail, the second driving assembly can drive the mounting plate to move along the length direction of the rubber mat, the connecting plate is connected on the mounting plate through the second guide rail in a sliding manner, the third driving assembly can drive the connecting plate to move towards the direction close to or away from the rubber mat, when the rubber pad is polished, the second driving component is firstly utilized to drive the mounting plate to move, so that the distance detector can detect all points on the rubber pad, the polishing amount required by the rubber pad can be accurately obtained, and then the third driving assembly and the second driving assembly are controlled to drive the grinding assembly to move and finish grinding, so that the grinding precision is improved.
Drawings
Fig. 1 is a schematic structural view of a conventional sharpening device.
Fig. 2 is a first schematic structural view of the automatic sharpening device.
Fig. 3 is a schematic structural diagram of the automatic sharpening device.
Fig. 4 is a schematic view of the structure of the die cutting unit and the automatic thinning apparatus.
Fig. 5 is a first graph of the distance detector and the sharpening assembly moving track of the automatic sharpening device during sharpening, wherein arrows indicate the moving direction.
Fig. 6 is a second diagram of the distance detector and the sharpening assembly moving track of the automatic sharpening device during sharpening, wherein arrows indicate the moving direction.
Description of the main element symbols: 1.1-beam, 1.2-wall plate, 1.3-frame, 1.4-roller, 1.6-first driving component, 1.5-rubber cushion, 2-second driving component, 2.1-first driving motor, 2.2-gear, 2.3-rack, 3-mounting plate, 4-first guide rail, 5-connecting plate, 6-third driving component, 6.1-second driving motor, 6.2-worm gear structure, 7-grinding component, 7.1-fourth driving component, 7.2-grinding wheel, 7.3-first belt pulley, 7.4-second belt pulley, 7.5-driving belt, 8-distance detector, 9-baffle plate and 10-second guide rail.
Detailed Description
The invention provides an automatic grinding device and a method for grinding a rubber pad of a cutting unit, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below by referring to the attached drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.
Referring to fig. 4, the printing machine includes a frame 1.3 and a die cutting unit, the die cutting unit includes a roller 1.4 with two ends rotatably connected to the frame 1.3, a first driving assembly 1.6 fixed on the frame 1.3 for driving the roller 1.4 to rotate, and a rubber pad 1.5 sleeved on the outer surface of the roller 1.4. Specifically, the die cutting unit of the printing machine further comprises a die cutting knife, the die cutting knife is arranged above the roller 1.4, the paper board folded into the paper box passes between the die cutting knife and the roller 1.4, and when the paper board needs to be cut, the roller 1.4 and the die cutting knife rotate, so that the paper board is cut off by a cutting edge of the die cutting knife. Wherein, cushion 1.5 is used for supporting the cardboard, and the cutting edge of die-cutting rule also can press on cushion 1.5 when cutting the cardboard, utilizes the shear force to cut off the cardboard, consequently can lead to cushion 1.5 wearing and tearing, and cushion 1.5 surface forms the recess, influences the cutting quality to the wallboard, and then needs the coping, levels off cushion 1.5 promptly. The above-described printing press and its die-cutting unit are prior art and are not within the scope of the present application.
Referring to fig. 2, 3 and 4, an automatic grinding device is used for grinding a rubber mat 1.5 of a die cutting unit of a printing machine, and comprises a first guide rail 4, two ends of which are fixedly connected with a frame 1.3 of the printing machine, a mounting plate 3 is connected onto the first guide rail 4 in a sliding manner, and a second driving assembly 2 for driving the mounting plate 3 to move along the length direction of the first guide rail 4 is arranged between the mounting plate 3 and the first guide rail 4; sliding connection has connecting plate 5 on mounting panel 3, installs the third drive assembly 6 that is used for driving connecting plate 5 to remove between mounting panel 3 and the connecting plate 5, and third drive assembly 6 drives the direction that 5 removal of connecting plate are perpendicular with the direction that 2 drive mounting panel 3 of second drive assembly removed, be fixed with coping subassembly 7 on connecting plate 5, be fixed with distance detector 8 on connecting plate 5 or the mounting panel, distance detector 8 can be infrared distance detector, laser distance detector, and distance detector 8 establishes in the 7 outsides of coping subassembly, and distance detector 8 sets up towards cushion 1.5, and is more excellent, and distance detector 8 sets up towards the axle center of cushion 1.5.
When third drive assembly 6 rotated, drive connecting plate 5 and remove to the direction of being close to or keeping away from cushion 1.5, drive coping subassembly 7 promptly and remove to the direction of being close to or keeping away from cushion 1.5, wherein, because second drive assembly 2 drive mounting panel 3 removes along 4 length direction of first guide rail, 4 length direction of first guide rail also are cushion 1.5's length direction, third drive assembly 6 drive connecting plate 5 removes to the direction of being close to or keeping away from cushion 1.5, realize coping subassembly 7 in the removal of two mutually perpendicular directions, satisfy the moving direction demand when carrying out the coping to cushion 1.5.
Specifically, a distance detector 8 is fixed on the connecting plate 5 or the mounting plate, and the distance detector 8 is arranged towards the surface of the rubber mat 1.5 and used for detecting the actual distance between the distance detector 8 and the surface of the rubber mat 1.5. When the grinding is carried out, the length direction of the first guide rail 4 is parallel to the axial direction of the rubber mat, the mounting plate 3 is driven to move along the length direction of the first guide rail 4 through the second driving assembly 2, and meanwhile, the first driving assembly 1.6 is combined with the rotation of the driving roller 1.4, so that the distance detector 8 can detect the distance between each point on the rubber mat 1.5 and the distance detector 8, wherein in the obtained data, the grinding amount of the rubber mat 1.5 needing grinding is subtracted from the minimum value by the maximum distance value. Therefore, the maximum distance value is used as the feeding amount of the grinding assembly 7 in the driving moving direction of the third driving assembly 6, and then the second driving assembly 2 drives the mounting plate 3 to move along the length direction of the first guide rail 4, so that the rubber pad 1.5 is ground, and grinding is more accurate and smoother.
In the foregoing, through the setting of distance detector 8, and distance detector 8 fixes on connecting plate 5, when second drive assembly 2 drive mounting panel 3 removed along 4 length direction of first guide rail, distance detector 8 can detect out the deepest position of whole cushion 1.5 surface recess, need the biggest position of coping volume promptly, and then third drive assembly 6 adjusts the position of coping subassembly 7 according to this coping volume, then utilize the rotation realization coping that second drive assembly 2 drive mounting panel 3 removed and cylinder 1.4, and is convenient fast, and simple structure, the determination of coping volume is also more accurate.
In a preferred embodiment, the second driving assembly 2 comprises a rack 2.3 fixed on the first rail 4, a first driving motor 2.1 fixed on the mounting plate 3, and a gear 2.2 fixed on an output shaft of the first driving motor 2.1, wherein the gear 2.2 is engaged with the rack 2.3. The length direction of the rack 2.3 is the same as the length direction of the first guide rail 4, so that when the first driving motor 2.1 rotates, the display mounting plate 3 moves along the length direction of the first guide rail 4.
The third driving assembly 6 comprises a second driving motor 6.1 and a worm and gear structure 6.2 which are fixed on the mounting plate 3, an output shaft of the second driving motor 6.1 is connected with an input end of the worm and gear structure 6.2, an output end of the worm and gear structure 6.2 is connected with the connecting plate 5, an axis of an output end of the worm and gear structure 6.2 is vertical to the length direction of the first guide rail 4, and when the third driving assembly 6 rotates, the connecting plate 5 is driven to move towards the direction close to or far away from the rubber mat 1.5.
In the above, the first driving motor 2.1 and the second driving motor 6.1 are both motors capable of reading rotation angles, and the distances of the mounting plate 3 and the connecting plate 5 to move are respectively calculated by obtaining the rotation angles of the first driving motor 2.1 and the first driving motor 2.1.
In a preferred embodiment, the sharpening assembly 7 comprises a fourth driving assembly 7.1 and a sharpening wheel 7.2, the fourth driving assembly 7.1 is fixed on the connecting plate 5, the sharpening wheel 7.2 is rotatably connected on the connecting plate 5, and the fourth driving assembly 7.1 is in transmission connection with the sharpening wheel 7.2. During sharpening, the fourth driving assembly 7.1 drives the sharpening wheel 7.2 to rotate, the first driving assembly 1.6 drives the roller 1.4 to rotate, and the sharpening wheel 7.2 is in contact with the rubber pad 1.5 on the roller 1.4, so that sharpening of the rubber pad 1.5 is realized.
The output shaft of the fourth driving component 7.1 is fixedly provided with a first belt pulley 7.3, one side of the grinding wheel 7.2 is coaxially fixedly provided with a second belt pulley 7.4, a transmission belt 7.5 is connected between the first belt pulley 7.3 and the second belt pulley 7.4, and the transmission belt 7.5 is used for transmission between the first belt pulley 7.3 and the second belt pulley 7.4, so that the fourth driving component 7.1 can drive the grinding wheel 7.2 to rotate.
In a preferred embodiment, a lifting assembly (not shown in the drawings) is installed on the connecting plate 5 or the mounting plate fixedly connected to the distance detector 8, a baffle plate 9 is fixed at an output end of the lifting assembly, the lifting assembly drives the baffle plate 9 to be shielded in front of the distance detector 8, that is, the baffle plate 9 can be placed between the distance detector 8 and the rubber mat 1.5, so that powder, dust and the like generated during grinding cannot be adhered to the distance detector 8, when the distance between the distance detector 8 and the rubber mat 1.5 needs to be detected, the lifting assembly drives the baffle plate 9 to move, so that the baffle plate 9 is no longer blocked between the distance detector 8 and the rubber mat 1.5, that is, the distance detector 8 can detect the surface of the rubber mat 1.5.
In practical application, the lifting assembly may be a moving structure such as an air cylinder and a screw rod structure, or a structure such as a motor that can drive the baffle 9 to swing.
Specifically, the frame 1.3 of the printing machine comprises a cross beam 1.1 and wall plates 1.2 fixed at two ends of the cross beam 1.1, the cross beam 1.1 fixes the wall plates 1.2 at two ends into a whole, the roller 1.4, the die-cutting knife and other structures are arranged between the two wall plates 1.2, and the first guide rail 4 and the rack 2.3 are fixed on the cross beam 1.1, so that the strength of the first guide rail 4 and the rack 2.3 can be increased.
And a second guide rail 10 is fixed on the mounting plate 3, and the connecting plate 5 is connected with the mounting plate 3 in a sliding manner through the second guide rail 10. The second guide rail 10 has the same longitudinal direction as the output shaft of the worm gear and is also identical to one of the radial directions of the rollers 1.4.
Of the above, the first drive assembly 1.6 and the fourth drive assembly 7.1 are preferably motors; the first guide rail 4 and the second guide rail 10 are linear guide rails.
Referring to fig. 5, a method for polishing a rubber pad of a die cutting unit includes the steps of:
A1. the rubber pad 1.5 is driven to rotate in a circle and the distance detector 8 is driven to move axially along the rubber pad, so that the distance between the surface of the whole rubber pad 1.5 and the distance detector 8 is obtained. Wherein, through cushion circumference rotation and distancer along cushion axial displacement for distancer can detect the distance between every point on the whole cushion surface and the distancer, and then the coping volume of obtaining is more accurate.
A2. Converting the maximum distance value between the surface of the rubber pad 1.5 and the distance detector 8 into a sharpening feeding amount S1 for driving the sharpening assembly; that is, the distance between the maximum value minus the distance detector 8 and the side of the thinning unit 7 closest to the rubber mat 1.5 is the thinning feed amount S1, and the third driving unit 6 drives the thinning unit 7 to move toward the direction close to the rubber mat 1.5 by the corresponding thinning feed amount S1. The maximum value is the maximum distance value detected between the rubber mat 1.5 and the distance detector, and when the distance between the set starting detection position D2 and the set ending detection position D3 is greater than the length of the rubber mat 1.5, the data detected by the distance detector 8 and placed outside the rubber mat 1.5 is analyzed and removed.
A3. And driving the grinding assembly to grind the rubber pad.
Wherein, the step of obtaining the distance between whole cushion and the distance detector includes: a 1.1-the second drive assembly 2 is reset to the starting position D1, the first drive assembly 1.6 is in the activated state, and the second drive assembly 2 is activated in the forward direction. The second driving assembly 2 is reset to the initial position D1, so that the initial point of grinding is ensured to be at the same position, and the grinding assembly 7 is arranged at the outer side of one end of the rubber pad 1.5. The first driving assembly 1.6 drives the roller 1.4 to rotate, so that the distance detector 8 can detect each position on the rubber mat 1.5 when detecting the rubber mat 1.5.
In practice, the first driving assembly 1.6 may be started when the second driving assembly 2 is started in the forward direction, or may be started before the second driving assembly 2 is started in the forward direction.
A1.2, the second driving assembly 2 drives the distance detector 8 to move to a set starting detection position D2, and data of the distance detector 8 starts to be read; the second driving assembly 2 drives the distance detector 8 to move to the set end detection position D3, and ends reading data of the distance detector 8; the second drive assembly 2 is stopped. Wherein, the distance between the set start detection position D2 and the set end detection position D3 is greater than or equal to the length of the rubber mat 1.5, so that the data of each point on the rubber mat 1.5 can be completely detected.
The step of driving the grinding assembly to grind the rubber pad comprises the following steps: and A3.1, reversely rotating the second driving assembly 2, starting the fourth driving assembly 7.1 at the same time until the grinding assembly 7 moves to a set starting detection position D2 from the distance detector 8, stopping the rotation of the fourth driving assembly 7.1, and driving the grinding assembly 7 to move away from the rubber pad 1.5 by the grinding feed amount S1 by the third driving assembly 6. In the step, the grinding of the rubber pad 1.5 by the grinding component 7 is completed. In practical application, when the grinding amount of the rubber pad 1.5 is too large when grinding is finished at one time, the grinding assembly 7 can be moved back and forth and the grinding amount can be fed in a grading manner, so that the grinding effect is ensured, and the grinding assembly 7 is prevented from being damaged.
A 3.2. the second drive assembly 2 continues to rotate in the reverse direction until the second drive assembly 2 reaches the starting position D1. After the grinding of the rubber pad 1.5 is completed, the grinding assembly 7 is driven to the initial position.
In a preferred embodiment, when the second driving assembly 2 drives the distance detector 8 to move to the set starting detection position D2, the lifting assembly drives the baffle 9 to descend; when the second driving unit 2 is started and drives the distance detector 8 to move to the set end detection position D3, the elevating unit drives the shutter 9 to ascend. When the baffle 9 rises, the baffle 9 blocks the front side of the distance detector 8, so that dust or powder generated during grinding is prevented from being adhered to the distance detector 8 to influence the detection effect; when the baffle 9 descends, the baffle 9 does not shield the distance detector 8 any more, and then the rubber mat 1.5 can be detected.
In the above embodiments, the distance detector 8 may be mounted on the mounting plate or connection plate 5.
Referring to fig. 6, in a preferred embodiment, before the second driving assembly 2 is started in the forward direction, or before the second driving assembly 2 drives the distance detector 8 to move to the set starting detection position D2 and starts to read data from the distance detector 8, the third driving assembly 6 drives the thinning assembly 7 to move to a direction close to the rubber mat 1.5 by a set distance S2; after the third driving assembly 6 drives the sharpening assembly 7 to move the sharpening feed amount S1 away from the rubber mat 1.5, the sharpening assembly 7 is continuously driven to move a set distance S2 away from the rubber mat 1.5. In this embodiment, coping subassembly 7 has great distance with the cross cutting unit isotructure of printing machine when initial position, avoids colliding coping subassembly 7 at the cross cutting unit of printing machine at the during operation, consequently through setting up distance S2, guarantees that the cross cutting unit of printing machine can not collide coping subassembly 7 at the during operation, and when the coping, through removing set distance S2 for be in better detection distance between distance detector 8 and cushion 1.5, improve the accuracy of detecting. In this embodiment, the distance detector 8 is mounted on the connection plate 5.
In the above, the automatic sharpening device may perform sharpening when the printer is in a working state, or may perform sharpening when the printer is in a standby state, and when the automatic sharpening device performs sharpening when the printer is in the standby state, the first driving assembly stops rotating after the fourth driving assembly 7.1 stops rotating or the fourth driving assembly 7.1 stops rotating.
The assembly comprises a first guide rail, two ends of the first guide rail are fixedly connected with a rack of a printing machine, an installation plate is connected onto the first guide rail in a sliding mode, and a second driving assembly used for driving the installation plate to move along the length direction of the first guide rail is arranged between the installation plate and the first guide rail; be fixed with the distance detection ware on the mounting panel, the distance detection ware is established in the coping subassembly outside, and the distance detection ware sets up towards the cushion.
The mounting plate 3 is connected with a connecting plate 5 in a sliding mode, a third driving assembly 6 used for driving the connecting plate 5 to move is installed between the mounting plate 3 and the connecting plate 5, the direction in which the third driving assembly 6 drives the connecting plate 5 to move is perpendicular to the direction in which the second driving assembly 2 drives the mounting plate 3 to move, and the distance detector is arranged on the connecting plate 5.
The arrangement mode and the effect of the first guide rail, the mounting plate, the second driving assembly, the connecting plate 5, the third driving assembly 6 and the distance detector are the same as those of the corresponding structure of the automatic grinding device.
A method of obtaining a minimum trimming amount of a cushion of a die cutting unit, comprising the steps of: driving the rubber mat to rotate circumferentially, and driving the distance detector to move axially along the rubber mat to obtain the distance between the surface of the whole rubber mat and the distance detector; and converting the maximum distance between the obtained surface of the rubber mat and the distance detector into the coping feed amount S1 for driving the coping assembly. In the obtained data, the minimum value is subtracted from the maximum distance value to obtain the minimum grinding amount of the rubber pad 1.5 needing grinding. In the existing partial die cutting unit, the using length of a die cutting knife is smaller than the length of a rubber mat, so that the rubber mat is partially not worn, and therefore, when the rubber mat is ground, the minimum grinding amount is added to the distance between a set grinding assembly and the rubber mat before the grinding assembly and the rubber mat are worn, namely the minimum grinding feeding amount when the rubber mat is ground and leveled.
The grinding feed amount obtained by the method is also suitable for the existing equipment which adopts the current change of the motor as the basis to judge whether grinding is flat or not, such as: when the grinding assembly is in contact with the rubber pad (can be determined according to current change at the moment), the grinding assembly continues to move for the distance of the minimum grinding amount, so that the surface of the rubber pad after grinding is just flat.
In the automatic grinding device mainly comprising a first guide rail 4, a mounting plate, a connecting plate 5, a distance detector 8, a second driving assembly 2 for driving the mounting plate to move and a third driving assembly 6 for driving the connecting plate 5 to move, wherein the mounting plate is connected to a cross beam 1.1 of a printing machine through the first guide rail 4, the second driving assembly 2 can drive the mounting plate to move along the length direction of a rubber mat 1.5, the connecting plate 5 is connected to the mounting plate through a second guide rail 10 in a sliding manner, the third driving assembly 6 can drive the connecting plate 5 to move towards or away from the rubber mat 1.5, when the rubber mat 1.5 is ground, the mounting plate is driven to move by the second driving assembly 2, so that the distance detector 8 can detect all points on the rubber mat 1.5, further, the required grinding amount of the rubber mat 1.5 can be accurately obtained, then the third driving assembly 6 and the second driving assembly 2 are controlled to drive the grinding assembly 7 to move and finish grinding, the grinding precision is improved.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.
Claims (3)
1. A method for polishing a rubber pad of a die cutting unit is characterized by comprising the following steps:
the first driving assembly drives the rubber mat to rotate circumferentially, and the second driving assembly drives the distance detector to move axially along the rubber mat, so that the distance between the surface of the whole rubber mat and the distance detector is obtained;
converting the maximum distance between the obtained rubber pad surface and the distance detector into a sharpening feed amount S1 for driving the sharpening assembly;
and driving the grinding assembly to grind the rubber pad.
2. A method of reconditioning a rubber mat of a die cutting unit according to claim 1, wherein said step of obtaining a distance between the entire rubber mat and a distance detector comprises:
the second driving assembly is reset to the starting position D1, the first driving assembly is in the starting state, and the second driving assembly is started in the positive direction;
the second driving assembly drives the distance detector to move to a set starting detection position D2 to start reading data of the distance detector; the second driving assembly drives the distance detector to move to a set ending detection position D3, and data reading of the distance detector is ended; the second drive assembly is stopped;
the step of driving the grinding assembly to grind the rubber pad comprises the following steps:
the third driving assembly drives the coping assembly to move towards the direction close to the rubber mat by a corresponding coping feed amount S1; the second driving assembly rotates reversely, meanwhile, the fourth driving assembly starts up until the grinding assembly moves to a set starting detection position D2 from the distance detector, the fourth driving assembly stops rotating, and the third driving assembly drives the grinding assembly to move towards the position far away from the rubber mat by the grinding feeding amount S1;
the second drive assembly continues to rotate in the reverse direction until the second drive assembly reaches the starting position D1.
3. The method for grinding the rubber mat of the die cutting unit according to claim 1 or 2, wherein the third driving unit drives the grinding unit to move a set distance S2 in a direction approaching the rubber mat before the second driving unit is started in a forward direction or before the second driving unit drives the distance detector to move to a set detection starting position D2 and starts to read data of the distance detector; and after the third driving assembly drives the grinding assembly to move the grinding feed amount S1 away from the rubber mat, the third driving assembly continues to drive the grinding assembly to move the set distance S2 away from the rubber mat.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111425587.7A CN114227387B (en) | 2021-09-06 | 2021-09-06 | Method for polishing rubber pad of die cutting unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111425587.7A CN114227387B (en) | 2021-09-06 | 2021-09-06 | Method for polishing rubber pad of die cutting unit |
| CN202111037289.0A CN113500464B (en) | 2021-09-06 | 2021-09-06 | Automatic grinding device and method for grinding rubber mat of die cutting unit |
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| CN202111037289.0A Division CN113500464B (en) | 2021-09-06 | 2021-09-06 | Automatic grinding device and method for grinding rubber mat of die cutting unit |
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| CN114227387B CN114227387B (en) | 2022-12-20 |
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| CN202111425595.1A Pending CN114260773A (en) | 2021-09-06 | 2021-09-06 | Assembly for obtaining minimum film repairing amount of rubber mat and method for obtaining minimum film repairing amount |
| CN202111425587.7A Active CN114227387B (en) | 2021-09-06 | 2021-09-06 | Method for polishing rubber pad of die cutting unit |
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| CN202111425595.1A Pending CN114260773A (en) | 2021-09-06 | 2021-09-06 | Assembly for obtaining minimum film repairing amount of rubber mat and method for obtaining minimum film repairing amount |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113500464A (en) | 2021-10-15 |
| CN113500464B (en) | 2022-02-15 |
| CN114260773A (en) | 2022-04-01 |
| CN114227387B (en) | 2022-12-20 |
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