CN114986319B - Gapless self-locking structure, traction device with gapless self-locking structure and glass edge grinding machine - Google Patents

Gapless self-locking structure, traction device with gapless self-locking structure and glass edge grinding machine Download PDF

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Publication number
CN114986319B
CN114986319B CN202210924357.3A CN202210924357A CN114986319B CN 114986319 B CN114986319 B CN 114986319B CN 202210924357 A CN202210924357 A CN 202210924357A CN 114986319 B CN114986319 B CN 114986319B
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China
Prior art keywords
gear
assembly
self
cross beam
locking structure
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CN202210924357.3A
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CN114986319A (en
Inventor
黄海
吴道祥
黄洪
黎仕川
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Guangdong Jinbo Intelligent Equipment Co ltd
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Guangdong Jinbo Intelligent Equipment Co ltd
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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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • 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
    • B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
    • 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
    • B24B41/007—Weight compensation; Temperature compensation; Vibration damping
    • 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
    • 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
    • B24B47/28—Equipment for preventing backlash
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Transmission Devices (AREA)

Abstract

The invention relates to the field of glass processing equipment, and discloses a gapless self-locking structure, a traction device with the gapless self-locking structure and a glass edge grinding machine with the gapless self-locking structure, wherein the gapless self-locking structure comprises a connecting frame, a rack and a gap eliminating assembly, the connecting frame is rotatably connected with a first gear and a second gear, and the rack is meshed with the first gear and the second gear; compared with the prior art, when the gap eliminating assembly is in the second state, the gap eliminating assembly applies acting force to the second gear in the direction opposite to the rotating direction of the second gear to eliminate the gap between the second gear and the rack, so that the second gear tightly holds the rack, the position of the first gear can be ensured not to change, the braking function is realized, when the gap eliminating assembly is applied to a traction device, the distance between the movable cross beam and the fixed cross beam can be accurately adjusted according to the width of glass, the movable cross beam can be ensured not to move in the glass polishing process, and the glass processing precision is ensured.

Description

Gapless self-locking structure and traction device with same and glass edge grinding machine
Technical Field
The invention relates to the field of glass processing equipment, in particular to a gapless self-locking structure, a traction device with the gapless self-locking structure and a glass edge grinding machine.
Background
The existing glass processing equipment drives glass to move through a traction device, racks and sliding rails are arranged on two sides of a base of the traction device, a sliding block matched with the sliding rails is connected to a movable cross beam, and a driving motor drives a driving gear connected with the movable cross beam to roll on the racks so as to drive the movable cross beam to slide. In order to enable the driving motor to have a braking function, a reduction gearbox is generally connected to the driving motor, the driving gear rotates through the reduction gearbox, therefore, although the driving gear can stop rotating when the driving motor stops operating, gaps can exist between teeth of the driving gear and teeth of a rack after the driving motor stops rotating, and gaps between the rack and the gears on two sides of the base are inconsistent due to different action errors of the driving motor, when the driving motor is restarted, two sides of a moving cross beam cannot move synchronously, namely slight dislocation can be generated, glass can be inclined during conveying besides the precision of glass processing, and normal processing of the glass is seriously affected.
Disclosure of Invention
The invention aims to provide a gapless self-locking structure, a traction device with the gapless self-locking structure and a glass edge grinding machine, which are used for solving the technical problems.
Gapless self-locking structure includes:
the connecting frame is rotationally connected with a first gear and a second gear;
a rack engaged with the first gear and the second gear;
the clearance elimination assembly is provided with a first state and a second state, and when the clearance elimination assembly is in the first state, the first gear rotates under the driving of external force and drives the second gear to rotate; when the clearance eliminating assembly is in the second state, the clearance eliminating assembly applies rotating acting force to the second gear so as to eliminate the clearance between the second gear and the rack.
According to an embodiment of the present invention, the connecting frame is further provided with a third gear coaxially disposed with the second gear, and when the backlash elimination unit is switched from the first state to the second state, the backlash elimination unit applies a rotational acting force in a direction opposite to a rotational direction of the third gear, the acting force being located in a tangential direction of the third gear.
According to one embodiment of the present invention, the backlash elimination assembly includes a driving cylinder and a slider connected to a driving end thereof, and in the first state, the slider is located outside the third gear; when the clearance eliminating assembly is switched to the second state, the driving cylinder drives the sliding block to contact with the third gear along the tangential direction of the third gear and applies rotating acting force to the third gear.
According to an embodiment of the present invention, a surface of the slider opposite to the third gear is an arc-shaped surface.
According to an embodiment of the present invention, the gap eliminating assembly further includes a guide shaft disposed parallel to a rotation shaft of the third gear, the guide shaft is connected to the link frame, and the slider moves vertically downward from between the third gear and the guide shaft in a process of switching the gap eliminating assembly from the first state to the second state.
According to an embodiment of the invention, the connection frame is provided with a proximity switch, which is located at an extended position in the moving direction of the slider.
A draw gear, including foretell zero clearance auto-lock structure, still include:
the rack is arranged along the length direction of the base;
the output end of the driving component is connected with the first gear and is used for driving the first gear to rotate;
and the movable cross beam is connected with the connecting frame, a movable sliding block is arranged at the bottom of the movable cross beam, and the movable sliding block is connected to the movable sliding rail in a sliding manner.
According to one embodiment of the invention, the device comprises two gapless self-locking structures, the two gapless self-locking structures are arranged at two ends of the movable cross beam, the driving assembly is provided with two output ends, and the first gear of each gapless self-locking structure is respectively connected with the output end of the corresponding side of the driving assembly.
According to one embodiment of the invention, the driving assembly comprises a servo motor, a reduction gearbox and an output shaft, wherein the driving end of the servo motor is connected with the reduction gearbox, the output end of the reduction gearbox is connected with the output shaft, two ends of the output shaft are rotatably connected to the connecting frame, and the first gears of the two gapless self-locking structures are respectively arranged at two ends of the output shaft.
According to one embodiment of the invention, the output shaft comprises a first output shaft and a second output shaft, and the first output shaft and the second output shaft are connected through a coupling and are respectively connected with a first gear of a gapless self-locking structure.
A glass edge grinding machine comprises a grinding assembly, a conveying assembly and the traction device, wherein one end of a base is fixedly connected with a fixed cross beam, the base is also provided with a movable cross beam, a plurality of bracket assemblies are arranged between the movable cross beam and the fixed cross beam, and the traction device is used for adjusting the distance between the movable cross beam and the fixed cross beam according to the width of glass to be processed; the glass to be processed moves along the bracket assembly between the movable cross beam and the fixed cross beam under the action of the conveying assembly and is polished to the polishing assembly in the moving process, and the feeding assembly is used for providing continuous thrust when the polishing assembly works so as to realize the instant automatic compensation feeding of the polishing assembly.
Compared with the prior art, the gapless self-locking structure and the traction device with the gapless self-locking structure have the following advantages:
according to the gapless self-locking structure and the traction device with the same, when the gap eliminating assembly is in the second state, the gap eliminating assembly applies rotating acting force to the second gear in the direction opposite to the rotating direction of the second gear to eliminate the gap between the second gear and the rack, so that the second gear tightly holds the rack, the position of the first gear cannot be changed to realize a braking function, when the gapless self-locking structure is applied to the traction device, the distance between the movable cross beam and the fixed cross beam can be accurately adjusted according to the width of glass, the movable cross beam cannot move in the glass grinding process, and the glass processing precision is ensured.
Drawings
FIG. 1 is a schematic structural view of a traction device with a gapless self-locking structure of the invention;
FIG. 2 is a schematic structural view of the traction device with a gapless self-locking structure of the invention after a protective cover is removed;
FIG. 3 is a partial enlarged view of A in FIG. 2;
FIG. 4 is a first positional relationship of the lash take-up assembly and the third gear;
FIG. 5 is a second positional relationship of the lash take-up assembly with the third gear;
FIG. 6 is a third positional relationship of the lash take-up assembly with the third gear;
FIG. 7 is a fourth positional relationship of the lash take-up assembly with the third gear;
FIG. 8 is a schematic view of the structure of the glass edge grinding machine;
fig. 9 is a partial enlarged view of B in fig. 8.
In the figure: 1. the automatic grinding machine comprises a connecting frame, 11 parts of a first gear, 12 parts of a second gear, 13 parts of a third gear, 14 parts of a proximity switch, 15 parts of a protective cover, 2 parts of a rack, 3 parts of a clearance eliminating assembly, 31 parts of a driving cylinder, 32 parts of a sliding block, 33 parts of a guiding shaft, 4 parts of a base, 41 parts of a movable sliding rail, 5 parts of a driving assembly, 51 parts of a servo motor, 52 parts of a reduction gearbox, 53 parts of an output shaft, 6 parts of a movable beam, 61 parts of a movable sliding block, 7 parts of a fixed beam, 8 parts of a bracket assembly, 101 parts of a grinding assembly and 102 parts of a conveying assembly.
Detailed Description
The implementation and advantages of the functions of the present invention will be further explained with reference to the accompanying drawings.
Embodiments of the present invention are illustrated in the drawings and, for purposes of clarity, numerous implementation details are set forth in the following description. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such practical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are used for descriptive purposes only, do not specifically refer to an order or sequence, and do not limit the present invention, but merely distinguish components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
For a further understanding of the contents, features and effects of the present invention, the following examples are illustrated in the accompanying drawings and described in the following detailed description:
referring to fig. 1 to 3, the present invention provides a gapless self-locking structure, which includes a connecting frame 1, a rack 2 and a gap eliminating assembly 3, wherein the connecting frame 1 is rotatably connected with a first gear 11 and a second gear 12; the rack 2 is meshed with a first gear 11 and a second gear 12; the clearance elimination assembly 3 has a first state and a second state, when the clearance elimination assembly 3 is in the first state, the first gear 11 is driven by external force to rotate and drive the second gear 12 to rotate; when the backlash eliminating assembly 3 is in the second state, it applies a rotational force to the second gear 12 to eliminate the backlash between the second gear 12 and the rack 2. According to the gapless self-locking structure, when the gap eliminating assembly 3 is in the first state, the gap eliminating assembly 3 cannot apply rotating acting force to the second gear 12 and cannot influence the rotation of the second gear 12, when the first gear 11 is driven, the first gear 11 rolls along the rack 2 and drives the second gear 12 to roll along the rack 2 through the connecting frame 1, the first gear 11 is a driving gear, and the second gear 12 is a driven gear; when the force driving the first gear 11 to rotate disappears, the clearance elimination assembly 3 is switched from the first state to the second state, the clearance elimination assembly 3 applies a rotating acting force to the second gear 12, the acting force can drive the second gear 12 to rotate, so that the teeth of the second gear 12 and the teeth of the rack 2 are tightly adhered together, the clearance between the teeth of the second gear 12 and the teeth of the rack 2 is eliminated, and the position of the first gear 11 stopping when the force driving the first gear 11 to rotate disappears is not changed; after the gap eliminating component 3 is switched to the second state and the teeth of the second gear 12 and the teeth of the rack 2 are tightly attached together, the acting force of the gap eliminating component 3 on the second gear 12 is changed to be towards the center of the gap eliminating component, the acting force is used for preventing the second gear 12 from further rotating so as to brake the second gear 12, and because the second gear 12 and the first gear 11 are both connected with the connecting frame 1, the gap eliminating component 3 brakes the first gear 11 by braking the second gear 12. When the gapless self-locking structure is used on a traction device, a connecting frame 1 is connected with a movable beam of the traction device, when a first gear 11 is driven to rotate by external force, the first gear 11 drives the movable beam to move along a rack 2, when the movable beam moves to a preset width of glass, the external force for driving the first gear 11 disappears, the first gear 11 stops rotating, a gap eliminating assembly 3 starts to switch to a second state and applies rotating acting force to a second gear 12, the second gear 12 rotates under the action of the gap eliminating assembly 3 and is tightly attached to teeth of the rack 2, the gap between the teeth of the second gear 12 and the teeth of the rack 2 is eliminated to achieve the purpose of locking the position of the first gear 11, the position of the first gear 11 can not be changed, the movable beam connected with the first gear 11 is enabled to accurately stay at the preset position and accurately adapt to the width of the glass, the glass can not shift between the fixed beam and the movable beam of the traction device in the process of the glass, and the movable beam can not shift between the fixed beam and the movable beam of the movable beam in the process of the glass.
It should be noted that, when the gapless self-locking structure is applied to the pulling device, the positions of the moving beam and the fixed beam are precisely adjusted according to the glass width by matching with the pulling device, when the glass width is adjusted, the fixed beam is not moved, an external force drives the first gear 11 to rotate along the rack 2, so that the first gear 11 pulls the moving beam to move through the connecting frame 1, if the moving beam is away from the fixed beam, the rotating directions of the first gear 11 and the second gear 12 are both counterclockwise, when the external force disappears, the first gear 11 stops rotating, a gap exists between the teeth of the second gear 12 and the teeth of the rack 2, the gap elimination assembly 3 applies a rotating force to the second gear 12, so that the second gear 12 rotates, the teeth of the second gear 12 are tightly attached to the teeth of the rack 2 and are locked by the gap elimination assembly 3, and at this time, the force of the gap elimination assembly 3 to the second gear 12 is far smaller than the force which can drive the first gear 11 to rotate and make the first gear 11 pull the moving beam to move through the connecting frame 1, so that the first gear 11 cannot rotate, and the moving beam is accurately adjusted according to the glass width.
It should be noted that the backlash elimination assembly 3 may rotate the second gear 12 clockwise or may rotate the second gear 12 counterclockwise, and the difference is that the point of application and the direction of application of the backlash elimination assembly 3 to the second gear 12 are different. When a gapless self-locking structure is applied to a traction device and the position of a movable beam is adjusted according to the width of glass, if the movable beam is far away from a fixed beam, a first gear 11 and a second gear 12 rotate anticlockwise, after the distance of the movable beam far away from the fixed beam is matched with the width of the glass, a gap eliminating assembly 3 applies rotating acting force to the second gear 12, if the acting force of the gap eliminating assembly 3 enables the second gear 12 to rotate clockwise, the rotating direction of the second gear 12 is opposite to the rotating direction when the second gear 12 is driven by the first gear 11, and the teeth of the second gear 12 are clung to one side, close to the first gear 11, of the teeth of a rack 2 and are locked, so that the first gear 11 can not rotate any more; if the second gear 12 is rotated counterclockwise by the force of the gap eliminating assembly 3, the rotation direction of the second gear 12 is the same as the rotation direction when the second gear is driven by the first gear 11, and the teeth of the second gear 12 are tightly attached to the side of the teeth of the rack 2 away from the first gear 11 and locked, so that the first gear 11 can not rotate any more.
Referring to fig. 3, in the gapless self-locking structure of the present invention, the connecting frame 1 is further provided with a third gear 13 coaxially disposed with the second gear 12, and when the gap eliminating assembly 3 is switched from the first state to the second state, it applies a rotational acting force on the third gear 13, where the acting force is located in a tangential direction of the third gear 13. The second gear 12 and the third gear 13 are respectively fixed at two ends of the same rotating shaft, when the third gear 13 is subjected to an acting force which is applied to the third gear 13 by the clearance elimination assembly 3 and is positioned in the tangential direction of the third gear, the third gear 13 rotates, because the third gear 13 and the second gear 12 share one rotating shaft, the second gear 12 rotates along with the rotating shaft while the third gear 13 rotates, the teeth of the second gear 12 and the teeth of the rack 2 are tightly attached together and locked, and the position of the first gear 11 can not change any more; and because the acting force of the clearance elimination assembly 3 on the third gear 13 is along the vertical tangential direction of the third gear 13, at the moment when the third gear 13 rotates, the position of the tangent point of the clearance elimination assembly 3 and the third gear 13 is shifted, the clearance elimination assembly 3 also completes the switching from the first state to the second state, and at the moment, the force of the clearance elimination assembly 3 on the third gear 13 faces to the center of the third gear 13, so that the third gear 13 is braked to prevent the third gear 13 from rotating.
Referring to fig. 3, in the gapless self-locking structure of the present invention, the gap eliminating assembly 3 includes a driving cylinder 31 and a sliding block 32 connected to a driving end thereof, and in a first state, the sliding block 32 is located at an outer side of the third gear 13; when the backlash eliminating assembly 3 is switched to the second state, the driving cylinder 31 drives the slider 32 to contact the third gear 13 in the tangential direction of the third gear 13, and applies a rotational force to the third gear 13. When the force for driving the first gear 11 disappears, the driving cylinder 31 is started and drives the slide block 32 to move along the tangential direction of the third gear 13, the slide block 32 is in contact with the third gear 13 in the moving process and applies a rotating acting force to the third gear 13 to enable the third gear 13 to rotate, when the third gear 13 rotates, the rotating shaft connected with the third gear rotates and drives the second gear 12 to rotate, the teeth of the second gear 12 are tightly attached to the teeth of the rack 2, the tooth clearance between the teeth of the second gear 12 and the teeth of the rack 2 is eliminated, and the position of the first gear 11 can not change when the external force for driving the first gear 11 to rotate disappears; when the slider 32 drives the third gear 13 to rotate, the height of the slider 32 is reduced, the position where the slider 32 originally contacts the third gear 13 becomes lower, and the switching from the first state to the second state is completed, after the slider is switched to the second state, the part above the position where the slider 32 originally contacts the third gear 13 presses the third gear 13, and a force towards the center of the third gear 13 is applied to the third gear 13, and the force can prevent the third gear 13 from further rotating, so that the second gear 12 is prevented from continuing to rotate by braking the third gear 13, and the first gear 11 is prevented from rotating; in the process of acting force on the third gear 13 by the sliding block 32, the third gear 13 is worn, but the third gear 13 is not in transmission connection with the rack 2, so that the transmission accuracy of the second gear 12 and the first gear 11 is not affected, and compared with other structures for directly braking the gear in transmission connection with the rack 2, the gap self-locking structure of the embodiment does not wear the first gear 11 and the second gear 12 in the braking process, and ensures the transmission accuracy of the first gear 11 and the second gear 12.
Referring to fig. 4, in the present invention, the driving cylinder 31 is disposed on the connecting frame 1, the sliding block 32 is connected to the driving end of the driving cylinder 31, the sliding block 32 is located on one side of the third gear 13 close to the first gear 11, the driving cylinder 31 is started and drives the sliding block 32 to move downward, and the sliding block 32 applies a rotating acting force to the third gear 13 along an excircle tangent of the third gear 13 in the vertical direction; when the clearance eliminating assembly 3 is in the first state, the cylinder column of the driving cylinder 31 is retracted, and the sliding block 32 is positioned above the third gear 13, when the clearance eliminating assembly 3 is in the second state, the driving cylinder 31 is started and drives the sliding block 32 to move downwards and stir the third gear 13 to rotate clockwise, so that the second gear 12 rotates along with the third gear 13, at the moment, the rotation direction of the second gear 12 is opposite to the rotation direction of the second gear 12 driven by the first gear 11 through the connecting frame 1, the teeth of the second gear 12 are tightly attached to the teeth of the rack 2, the rack 2 is locked by the second gear 12, and the position of the first gear 11 cannot change any more; when the zero-clearance self-locking structure is applied to the traction device, the traction device adjusts the distance between the movable beam and the fixed beam according to the width of the glass, then the glass is fixed between the movable beam and the fixed beam, in the process of polishing the glass, because the rack 2 is locked by the third gear 13, the position of the second gear 12 cannot be changed, the first gear 11 is kept still, the movable beam cannot be moved, the distance between the movable beam and the fixed beam cannot be changed, and the glass processing precision can be ensured.
Referring to fig. 6, the driving cylinder 31 is disposed on the connecting frame 1, the slider 32 is connected to a driving end of the driving cylinder 31 and horizontally disposed, the driving cylinder 31 starts and drives the slider 32 to horizontally move, a direction of the horizontal movement of the slider 32 faces the moving beam, the slider 32 applies a rotational force to the third gear 13 along an external tangent of the third gear 13 in the horizontal direction and stirs the third gear 13 to rotate clockwise, so that the second gear 12 rotates along with the third gear 13, and at this time, a rotation direction of the second gear 12 is opposite to a rotation direction of the second gear 12 driven by the first gear 11 through the connecting frame 1. The rotation direction of the third gear 13 driven by the slider 32 in fig. 6 is the same as the rotation direction of the third gear 13 driven by the slider in fig. 4, and the functions and the advantages are also the same, the difference is that the force application position of the third gear 13 by the slider 32 is different, and the moving direction of the slider 32 is different.
Referring to fig. 5, in some embodiments, the driving cylinder 31 is disposed on the connecting frame 1, the sliding block 32 is connected to a driving end of the driving cylinder 31, the sliding block 32 is located on a side of the third gear 13 away from the first gear 11, the driving cylinder 31 is activated and drives the sliding block 32 to move downward, and the sliding block 32 applies a rotating acting force to the third gear 13 along an excircle tangent of the third gear 13 in a vertical direction; when the gap eliminating assembly 3 is in the first state, the cylinder column of the driving cylinder 31 is retracted, and the slide block 32 is located above the third gear 13, and when the gap eliminating assembly 3 is in the second state, the driving cylinder 31 is started and drives the slide block 32 to move downwards and stir the third gear 13 to rotate anticlockwise, so that the second gear 12 rotates along with the third gear 13. When the gapless self-locking structure is used on a traction device, when the traction device adapts to the width of glass by adjusting the distance from a movable cross beam to a fixed cross beam, if the distance between the movable cross beam and the fixed cross beam is adjusted by moving the movable cross beam to the direction of the fixed cross beam, after the movable cross beam moves in place, when the gap eliminating assembly 3 drives the movable cross beam, the sliding block 32 drives the third gear 13 to rotate, and the third gear 13 drives the second gear 12 to rotate, so that the gap between the teeth of the second gear 12 and the teeth of the rack 2 is eliminated, the rack 2 is locked by the second gear 12, the first gear 11 is kept still, the movable cross beam cannot move, the distance between the movable cross beam and the fixed cross beam cannot change, and the glass processing precision can be ensured.
Referring to fig. 7, the driving cylinder 31 is disposed on the connecting frame 1, the sliding block 32 is connected to and horizontally disposed at a driving end of the driving cylinder 31, the driving cylinder 31 starts and drives the sliding block 32 to move horizontally, the sliding block 32 moves horizontally away from the moving beam, and the sliding block 32 applies a rotational force to the third gear 13 along an excircle tangent of the third gear 13 in the horizontal direction and drives the third gear 13 to rotate counterclockwise, so that the second gear 12 rotates along with the third gear 13. The rotation direction of the third gear 13 driven by the slider 32 in fig. 7 is the same as the rotation direction of the third gear 13 driven by the slider in fig. 6, and the functions and the advantages are also the same, except that the force application position of the third gear 13 by the slider 32 is different, and the moving direction of the slider 32 is different.
Referring to fig. 3, in the self-locking structure without backlash of the present invention, the surface of the sliding block 32 opposite to the third gear 13 is an arc surface. The diameter of the circle where the arc surface of the slide block 32 is located is matched with the diameter of the third gear 13, so that when the slide block 32 applies a rotating acting force to the third gear 13, a plurality of teeth of the third gear 13 are in contact with the arc surface of the slide block 32, the contact area between the third gear and the slide block 32 is increased, and when the driving cylinder 31 applies a force to the third gear 13 through the slide block 32, the stress surface of the third gear 13 is larger.
According to the gapless self-locking structure, the gap eliminating assembly 3 further comprises a guide shaft 33 which is arranged in parallel with the rotating shaft of the third gear 13, the guide shaft 33 is connected to the connecting frame 1, and the sliding block 32 vertically moves downwards from the position between the third gear 13 and the guide shaft 33 in the process that the gap eliminating assembly 3 is switched from the first state to the second state. In the process that the driving cylinder 31 drives the sliding block 32 to move downwards, the sliding block 32 vertically moves downwards between the third gear 13 and the guide shaft 33, after the sliding block passes through a line tangent to the third gear 13 on the arc-shaped surface of the sliding block 32, the distance between the third gear 13 and the guide shaft 33 is smaller than the thickness of a part of the sliding block 32 above the tangent line, the sliding block 32 locks the third gear 13, and meanwhile, the guide shaft 33 limits the sliding block 32 to avoid the sliding block from moving towards the direction far away from the third gear 13. In addition, the guide shaft 33 and the third gear 13 form a clamping mechanism for the slider 32, and the clamping mechanism can prevent the connecting part between the driving cylinder 31 and the slider 32 from deforming under the action of reverse force of the third gear 13 when moving, so that the service life of the driving cylinder 31 is effectively guaranteed.
Referring to fig. 3, in the self-locking structure without gap of the present invention, the connecting frame 1 is provided with the proximity switch 14, and the proximity switch 14 is located at an extended position in the moving direction of the sliding block 32. After the proximity switch 14 senses the slider 32, the driving cylinder 31 and the stopping block 32 move downwards, so that the slider 32 is prevented from moving over to cause serious abrasion to the teeth on the third gear 13.
Referring to fig. 1, in practical application, the connecting frame 1 is further provided with a protective cover 15, the protective cover 15 covers the third gear 13, the sliding block 32 and the guide shaft 33 therein, so as to prevent dust from falling between the third gear 13 and the sliding block 32 during use and affecting control of the sliding block 32 on the third gear 13, so that the third gear 13 does not rotate in place, and further, gaps between teeth of the second gear 12 and teeth of the first gear 11 and teeth of the rack 2 cannot be completely eliminated, and affecting transmission accuracy of the first gear 11 and the rack 2.
It should be noted that the connecting frame 1 is composed of two side plates, the second gear 12 and the third gear 13 are respectively located at two sides of the connecting frame 1, and a supporting mechanism with two supporting points is formed at two sides of the connecting frame 1, so that the transmission strength of a rotating shaft connecting the second gear 12 and the third gear 13 can be improved, and the problem that the transmission function is affected due to incomplete meshing caused by deformation of the second gear 12 and the rack 2 when the torques are inconsistent is avoided. The tooth profiles of the second gear 12 and the third gear 13 are not identical, the third gear 13 is a spur gear, and the second gear 12 is a helical gear. The third gear 13 needs to be connected with the sliding block 32 in a matching manner, and the spur gear can maximize the friction of the contact surface between the third gear 13 and the sliding block 32, and can avoid the problem of unbalanced wear caused by unbalanced distribution of the friction force of the third gear 13 on the sliding block 32; when the second gear 12 rotates, the helical gear for the second gear 12 generates an axial component force in the axial direction of the second gear 12, and applies an axial pressure to the axial direction of the third gear 13, so that the change of the friction area between the third gear 13 and the slider 32 is stabilized, and the third gear 13 and the slider 32 are prevented from being loosened.
Referring to fig. 1 and fig. 2, the present invention further relates to a traction apparatus, the traction apparatus of the present invention includes the above zero-clearance self-locking structure, further includes a base 4, a driving assembly 5, and a movable cross beam 6, the base 4 is provided with a movable sliding rail 41, the movable sliding rail 41 is disposed in the same direction as the tooth arrangement direction of the rack 2, the rack 2 of the zero-clearance self-locking structure is disposed along the length direction of the base 4, the output end of the driving assembly 5 is connected with the first gear 11 for driving the first gear 11 to rotate, the movable cross beam 6 is connected with the connecting frame 1, the bottom of the movable cross beam is provided with a movable sliding block 61, and the movable sliding block 61 is slidably connected to the movable sliding rail 41. When the driving assembly 5 is started, the clearance elimination assembly 3 is in a first state, at this time, the driving assembly 5 drives the first gear 11 to rotate, the first gear 11 rotates along the rack 2 and drives the second gear 12 to rotate along the rack 2 through the connecting frame 1, when the first gear 11 and the second gear 12 rotate along the rack 2, the connecting frame 1 pulls the moving beam 6 to move, so that the moving slider 61 at the bottom of the moving beam 6 slides along the moving slide rail 41, the driving assembly 5 stops operating, the first gear 11 stops rotating, and the clearance elimination assembly 3 is started and switched from the first state to a second state, in the switching process, the slider 32 pulls the third gear 13 to rotate, the third gear 13 rotates and drives the second gear 12 to rotate through a rotating shaft connected with the third gear 13, so that the teeth of the second gear 12 and the teeth of the rack 2 are tightly attached, at the moment when the slider 32 pulls the third gear 13, the slider 32 descends and is close to the switch 14, then the driving cylinder 31 stops driving slider 32 from driving the slider 32 to move downwards, the slider 32 is clamped between the third gear 13 and the guide shaft 33, and the third gear 13 is switched to the clearance elimination assembly 3, and the second state is also switched to the second state; the moving beam 6 is accurately parked at the set position.
Referring to fig. 1 and 2, the traction apparatus of the present invention includes two self-locking structures without clearance, the two self-locking structures without clearance are disposed at two ends of the movable beam 6, the driving assembly 5 has two output ends, and the first gear 11 of each self-locking structure without clearance is connected to the output end of the corresponding side of the driving assembly 5. When the driving assembly 5 is started, the first gear 11 and the second gear 12 of the gapless self-locking structure on the two sides of the base 4 simultaneously rotate along the racks 2 on the two sides of the base 4 and pull the movable beam 6 to move, so that the stress on the two sides of the movable beam 6 is balanced, when the driving assembly 5 stops starting, the gapless self-locking structure simultaneously brakes, the two sides of the movable beam 6 cannot deviate, and the processing precision of glass can be ensured. In the invention, the gapless self-locking structures are symmetrically arranged on the two sides of the movable cross beam 6, the linkage synchronization of the two gapless self-locking structures can be ensured in the maximum range, the stability of the base 4 when the second gear 12 rotates reversely is ensured, and when the sliding block 32 generates the braking action, the two sides of the base 4 can be subjected to the uniform braking action, so that the stability of the base 4 during starting and braking is ensured.
Referring to fig. 1 and 2, in the traction apparatus of the present invention, the driving assembly 5 includes a servo motor 51, a reduction box 52 and an output shaft 53, the driving end of the servo motor 51 is connected to the reduction box 52, the output end of the reduction box 52 is connected to the output shaft 53, two ends of the output shaft 53 are rotatably connected to the connecting frame 1, and the first gears 11 of the two gapless self-locking structures are respectively disposed at two ends of the output shaft 53. When the servo motor 51 is started, the two first gears 11 synchronously rotate, and when the servo motor 51 is stopped, the two first gears 11 synchronously stop rotating, so that the gapless self-locking structures on the two sides can drive the movable cross beam 6 to synchronously move, and the situation that the first gears 11 on any side are started and stopped to lag behind or advance is avoided, so that the movable cross beam 6 is inclined, the moving linearity of the movable cross beam 6 is influenced, and the processing precision of glass is further influenced.
Referring to fig. 1 and 2, in the traction apparatus of the present invention, the output shaft 53 includes a first output shaft and a second output shaft, and the first output shaft and the second output shaft are connected through a coupling and are respectively connected to a first gear 11 of a gapless self-locking structure. Because the teeth between the racks 2 on both sides of the base 4 may be not perfectly aligned, the first output shaft and the second output shaft are connected by the coupling, so that when the servo motor 51 is started, the first gears 11 on both sides generate a torsion on the output shaft 53 because the axes are not on the same straight line, and the output shaft 53 is prevented from being broken.
According to the traction device, the gapless self-locking structure is adopted, after the servo motor 51 stops starting, the gap eliminating assembly 3 eliminates the gap between the teeth of the second gear 12 and the teeth of the rack 2 by rotating the third gear 13, then the first gear 11 is braked by locking the second gear 12, the functions of eliminating the gap and braking are met, the first gear 11 and the second gear 12 cannot be abraded, and the transmission precision of the first gear 11 and the second gear 12 and the rack 2 cannot be influenced; in addition, the first gears 11 on the two sides of the base 4 are driven by the same servo motor 51, so that the starting and stopping synchronism of the first gears 11 on the two sides of the base 4 can be ensured, the two first gears 11 are respectively connected with the first output shaft and the second output shaft, the first output shaft and the second output shaft are connected through the coupler, torsion generated when the teeth between the racks 2 on the two sides of the base 4 are staggered can be generated, and the output shaft 53 is prevented from being twisted off.
Referring to fig. 8 and 9, the present invention further relates to a glass edge grinding machine, which comprises a grinding assembly 101, a conveying assembly 102 and the traction device, wherein one end of the base 4 is fixedly connected with a fixed cross beam 7, a plurality of bracket assemblies 8 are arranged between the movable cross beam 6 and the fixed cross beam 7, and the traction device is used for adjusting the distance between the movable cross beam 6 and the fixed cross beam 7 according to the width of the glass to be processed; the glass to be processed is moved along the carriage assembly 8 between the moving beam 6 and the fixed beam 7 by the conveying assembly 102 and is ground by the grinding assembly 101 during the movement. When the glass edge grinding machine is started, when the type of glass is changed, the width of the glass is changed, before the glass is processed, the traction device is started, the movable cross beam 6 is driven by the driving assembly 5 and moves along the base 4, so that the distance between the movable cross beam 6 and the fixed cross beam 7 is adjusted, the distance between the movable cross beam 6 and the fixed cross beam 7 is matched with the width of the glass, after the distance between the movable cross beam 6 and the fixed cross beam 7 is adjusted, the driving assembly 5 stops operating, meanwhile, the gap eliminating assembly 3 is started and switched from the first state to the second state, in the switching process, the sliding block 32 rotates, the third gear 13 rotates and drives the second gear 12 to rotate through a rotating shaft connected with the third gear 13, so that the teeth of the second gear 12 are tightly attached to the teeth of the rack 2, at the moment when the sliding block 32 stirs the third gear 13, the sliding block 32 descends and is close to the switch 14, then the driving cylinder 31 stops driving the sliding block 32 to drive the sliding block 32 to downwards, the sliding block 32 is clamped between the third gear 13 and the guide shaft 33, the third gear 13 is locked, and the gap eliminating assembly 3 is switched to the second state, and the gap eliminating assembly 3 is switched to the accurate position, so that the moving cross beam 6 is transferred to the set position; then, glass is placed between the movable cross beam 6 and the fixed cross beam 7, the glass is supported by the bracket assembly 8, then the conveying assembly 102 drives the glass to move between the movable cross beam 6 and the fixed cross beam 7 along the bracket assembly 8, in the process that the glass moves along the bracket assembly 8, the polishing assemblies 101 on the outer sides of the movable cross beam 6 and the fixed cross beam 7 are started, the grinding heads of the polishing assemblies 101 start to polish the glass, in the process that the polishing assemblies polish the glass, the racks are locked by the second gear 12, the position of the first gear 11 cannot be changed, the movable cross beam 6 cannot move, the distance between the movable cross beam 6 and the fixed cross beam 7 cannot be changed, and the processing precision of the glass can be ensured.
According to the glass edge grinding machine, due to the adoption of the traction device, the distance between the movable cross beam 6 and the fixed cross beam 7 can be accurately matched with the width of glass, in the process of processing the glass by the grinding assembly 101, due to the zero-clearance self-locking structure, the teeth of the second gear 12 are in close contact with the teeth of the rack 2, and a braking function is realized, in the process of grinding the glass by the grinding assembly 101, the force of the grinding assembly 101 on the glass cannot enable the zero-clearance self-locking structure to drive the movable cross beam 6 to move, the distance between the movable cross beam 6 and the fixed cross beam 7 cannot be changed, the glass cannot move between the movable cross beam 6 and the fixed cross beam 7, and the glass processing precision can be ensured.
The present invention is not limited to the above preferred embodiments, and any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. Gapless self-locking structure, its characterized in that includes:
the connecting frame (1) is rotationally connected with a first gear (11), a second gear (12) and a third gear (13) which is coaxial with the second gear (12);
a rack (2) which meshes with the first gear (11) and the second gear (12);
the clearance elimination assembly (3) comprises a driving cylinder (31) and a sliding block (32) connected with the driving end of the driving cylinder (31), the clearance elimination assembly (3) has a first state and a second state, when the clearance elimination assembly (3) is in the first state, the sliding block (32) is located on the outer side of the third gear (13), and the first gear (11) rotates under the driving of external force and drives the second gear (12) to rotate; when the clearance eliminating assembly (3) is switched to the second state, the driving cylinder (31) drives the sliding block (32) to contact with the third gear (13) along the tangential direction of the third gear (13), applies rotating acting force to the third gear (13), and applies rotating acting force to the second gear (12) through the third gear (13) so as to eliminate the clearance between the second gear (12) and the rack (2).
2. The gapless self-locking structure according to claim 1, wherein the surface of the sliding block (32) opposite to the third gear (13) is an arc surface.
3. The slackless self-locking arrangement according to claim 1, characterized in that the slack eliminating assembly (3) further comprises a guide shaft (33) arranged in parallel with the axis of rotation of the third gear wheel (13), the guide shaft (33) being connected to the connecting frame (1), the slide (32) being vertically displaced downwards from between the third gear wheel (13) and the guide shaft (33) during switching of the slack eliminating assembly (3) from the first state to the second state.
4. The slackless self-locking arrangement according to claim 1, characterized in that a proximity switch (14) is provided on the connecting frame (1), said proximity switch (14) being located in an extended position in the direction of movement of the slide (32).
5. A traction device with a gapless self-locking structure according to any one of claims 1 to 4, further comprising:
the rack is characterized by comprising a base (4), wherein a movable sliding rail (41) is arranged on the base (4), and the rack (2) is arranged along the length direction of the base (4);
the output end of the driving component (5) is connected with the first gear (11) and is used for driving the first gear (11) to rotate;
the movable cross beam (6) is connected with the connecting frame (1), a movable sliding block (61) is arranged at the bottom of the movable cross beam (6), and the movable sliding block (61) is connected to the movable sliding rail (41) in a sliding mode.
6. The traction device according to claim 5, characterized by comprising two said zero-clearance self-locking structures, which are arranged at both ends of said movable beam (6), said drive assembly (5) having two output ends, the first gear (11) of each said zero-clearance self-locking structure being connected to the output end of the corresponding side of said drive assembly (5), respectively.
7. The traction device according to claim 6, wherein the driving assembly (5) comprises a servo motor (51), a reduction gearbox (52) and an output shaft (53), the driving end of the servo motor (51) is connected with the reduction gearbox (52), the output end of the reduction gearbox (52) is connected with the output shaft (53), two ends of the output shaft (53) are rotatably connected to the connecting frame (1), and the first gears (11) of the two gapless self-locking structures are respectively arranged at two ends of the output shaft (53).
8. A towing attachment in accordance with claim 7, characterized in that the output shafts (53) comprise a first output shaft and a second output shaft, which are coupled by a coupling and are each coupled to a first gear wheel (11) of one of the slackless self-locking arrangements.
9. A glass edge grinding machine comprising a grinding assembly (101) and a conveying assembly (102), characterized by further comprising a traction device according to any one of claims 5 to 8, wherein a fixed cross beam (7) is fixedly connected to one end of the base (4), a plurality of bracket assemblies (8) are arranged between the moving cross beam (6) and the fixed cross beam (7), and the traction device is used for adjusting the distance between the moving cross beam (6) and the fixed cross beam (7) according to the width of the glass to be processed; the glass to be processed moves along a bracket assembly (8) between the moving beam (6) and the fixed beam (7) under the action of the conveying assembly (102) and is ground by the grinding assembly (101) in the moving process.
CN202210924357.3A 2022-08-03 2022-08-03 Gapless self-locking structure, traction device with gapless self-locking structure and glass edge grinding machine Active CN114986319B (en)

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CN102078977A (en) * 2010-12-10 2011-06-01 宁波市镇海众鑫数控(自动化)机床厂 Machine tool with transposition tool carrier
CN106271803A (en) * 2015-05-20 2017-01-04 崴立机电（苏州）有限公司 Rack-and-pinion is without backlash drive mechanism and double servo digital control lathes of application thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102078977A (en) * 2010-12-10 2011-06-01 宁波市镇海众鑫数控(自动化)机床厂 Machine tool with transposition tool carrier
CN106271803A (en) * 2015-05-20 2017-01-04 崴立机电（苏州）有限公司 Rack-and-pinion is without backlash drive mechanism and double servo digital control lathes of application thereof

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