CN108582974B - Front parallel type printing platen moving, counting and positioning mechanism - Google Patents
Front parallel type printing platen moving, counting and positioning mechanism Download PDFInfo
- Publication number
- CN108582974B CN108582974B CN201810196110.8A CN201810196110A CN108582974B CN 108582974 B CN108582974 B CN 108582974B CN 201810196110 A CN201810196110 A CN 201810196110A CN 108582974 B CN108582974 B CN 108582974B
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- sprocket
- printing platen
- counting
- driving
- chain wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/16—Printing tables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/02—Arrangements of indicating devices, e.g. counters
- B41F33/025—Counters
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- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Position Or Direction (AREA)
- Handling Of Sheets (AREA)
Abstract
The invention discloses a front parallel type printing platen moving, counting and positioning mechanism which comprises a frame, a transmission chain wheel, a driving device, a transmission chain, a printing platen, a counting chain wheel, a chain wheel bracket, a photoelectric switch, an induction plate and a proximity switch, wherein the transmission chain is arranged on the frame; the invention has smart and reasonable structural design, when the induction plate runs to the proximity switch at normal speed in the working process, the proximity switch is triggered, the control system controls the driving device to decelerate at the moment, when the induction plate moves to the photoelectric switch in a decelerating state, the photoelectric switch is triggered, the control system cuts off the output of the driving device, the printing platen stops, namely, the printing platen stops after decelerating, thereby not only avoiding the influence of overlarge inertia caused by sudden stopping on the positioning precision, effectively improving the stability of positioning and transmission, but also eliminating the error of movement positioning caused by the clearance of the transmission chain, and having high repeated positioning precision.
Description
Technical Field
The invention relates to the technical field of printing platen moving and positioning, in particular to a front parallel type printing platen moving and counting positioning mechanism and a moving method thereof.
Background
The traditional screen plane printing platen generally adopts a fixed type and a running table type, although the printing object of the fixed type screen printing platform can realize the overprinting of single color for many times, the overprinting for many times completely adopts the modes of visual inspection of workers and platen positioning blocks, and the randomness of the workers directly influences the overprinting precision. The printing in the mode can not realize continuous multiple printing, printing ink must be overprinted again after being dried, the degree of automation is low, the influence of workers is large, and the printing method is only suitable for small-batch production. The novel front parallel printing platen moving structure can well solve the defects of a fixed type and a running table type printing machine, but the repeated positioning accuracy is relatively poor due to the reasons of chain gaps and the like of the front parallel printing platen moving structure.
Therefore, it is required to develop a front parallel printing platen moving counting and positioning mechanism with high repeated positioning precision.
Disclosure of Invention
Aiming at the defects, the invention aims to provide the front parallel type printing platen moving counting and positioning mechanism which is ingenious and reasonable in structural design and high in repeated positioning precision.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows: the utility model provides a front parallel type printing platen removes count positioning mechanism, its includes the frame, sets up the drive sprocket in the frame, can drive sprocket pivoted drive arrangement, with drive sprocket looks adaptation drive chain and activity be located the frame and receive printing platen, count sprocket, sprocket support, photoelectric switch, induction plate and proximity switch that drive chain draged, sprocket support corresponds one side position setting of drive chain in the bottom of frame, count sprocket pass through the axis of rotation setting at sprocket support, and with drive chain meshes, the induction plate sets up on the lateral wall of count sprocket, proximity switch and photoelectric switch arrange in proper order along the track line that the induction plate rotated along with count sprocket rotation and set up, wherein proximity switch passes through the proximity support setting on the sprocket support, photoelectric switch passes through the switch support setting in the frame.
As an improvement of the invention, a part of the induction plate is provided with a central hole for the rotation shaft to pass through, the induction plate is provided with arc-shaped regulating holes corresponding to the two sides of the central hole, and the side wall of the counting chain wheel is provided with mounting holes corresponding to the arc-shaped regulating holes; the other part of the induction plate is bent outwards and extends radially to form an induction part.
As an improvement of the invention, the proximity bracket comprises a vertical support plate and an arc support plate arranged at the upper end of the vertical support plate, the lower end of the vertical support plate is fixed on the chain wheel bracket through screws, the arc trend of the arc support plate is consistent with the outline of the counting chain wheel, a plurality of strip-shaped regulating holes are sequentially formed in the arc support plate, and the proximity switch is locked on the strip-shaped regulating holes through regulating screws and corresponds to the sensing part.
As an improvement of the invention, the upper end of the switch bracket is bent towards one side of the induction plate to form an upper platform, the lower end is bent towards the opposite direction to form a lower platform, the lower platform is fixed on the frame through screws, and the photoelectric switch is arranged on the upper platform and corresponds to the induction part.
As an improvement of the invention, the photoelectric switch is a U-shaped photoelectric switch with a groove matched with the sensing part.
As an improvement of the invention, the transmission chain wheel comprises a first main driving chain wheel, a second main driving chain wheel, a first transition chain wheel, a second transition chain wheel, a transmission component and a synchronization component, wherein the upper part and the bottom of the inner side wall of the frame are provided with support supporting plates extending along the long side trend of the frame, and the two sides of the bottom surface of the printing platen are provided with support wheels; the first main driving sprocket and the first transition sprocket are sequentially arranged on the left inner wall of the frame in an outer-to-inner sequence, the second transition sprocket and the second main driving sprocket are sequentially arranged on the right inner wall of the frame in an outer-to-inner sequence, the first transition sprocket and the second main driving sprocket are coaxially arranged, the driving device is arranged on the frame and simultaneously drives the first main driving sprocket and the first transition sprocket to rotate through the driving assembly, the second main driving sprocket drives the second transition sprocket to rotate through the synchronizing assembly, the driving chain at the left side is wound around the first main driving sprocket, and the driving chain at the right side is wound around the second main driving sprocket; the printing platen has four corners, wherein the left front corner of the printing platen is hinged to the left-side drive chain and the right rear corner is hinged to the right-side drive chain.
As an improvement of the invention, the transmission assembly comprises a direct-connection speed reducer, a connecting shaft and a worm gear speed reducer, wherein the speed reduction output end of the direct-connection speed reducer is connected with the first main driving sprocket, the direct-connection output end of the direct-connection speed reducer is connected with the input shaft of the worm gear speed reducer through the connecting shaft, and the speed reduction output end of the worm gear speed reducer is connected with the first transition sprocket.
As an improvement of the invention, the driving device is a motor, and a driving shaft of the motor is connected with the input end of the direct-connected speed reducer.
The beneficial effects of the invention are as follows: the invention has ingenious and reasonable structural design, the counting chain wheel rotates along with the movement of the transmission chain in the working process, the sensing plate synchronously rotates along with the counting chain wheel, when the sensing plate moves to the proximity switch at normal speed, the proximity switch is triggered, the control system controls the driving device to decelerate, when the sensing plate moves to the photoelectric switch in a decelerating state, the photoelectric switch is triggered, the control system cuts off the output of the driving device, the printing platen stops, namely, the printing platen stops after decelerating, thereby not only avoiding the influence of overlarge inertia caused by sudden stopping, but also effectively improving the stability of positioning and transmission, simultaneously eliminating the error of movement positioning caused by the clearance of the transmission chain, and having high repeated positioning precision.
The invention will be further described with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an enlarged schematic view of a partial structure of the present invention.
Fig. 3 is a schematic diagram of the side view of fig. 2.
Fig. 4 is an exploded view of fig. 2.
Description of the embodiments
Referring to fig. 1 to 4, the front parallel type printing platen moving, counting and positioning mechanism provided by the embodiment comprises a frame 1, a driving sprocket 2 arranged on the frame 1, a driving device 3 capable of driving the driving sprocket 2 to rotate, a driving chain 13 matched with the driving sprocket 2, and a printing platen 4 movably arranged on the frame 1 and dragged by the driving chain 13, a counting sprocket 5, a sprocket support 6, a photoelectric switch 7, a sensing plate 8 and a proximity switch 9, wherein one side position of the sprocket support 6 corresponding to the driving chain 13 is arranged at the bottom of the frame 1, the counting sprocket 5 is arranged on the sprocket support 6 through a rotating shaft 10 and meshed with the driving chain 13, the sensing plate 8 is arranged on the side wall of the counting sprocket 5, the proximity switch 9 and the photoelectric switch 7 are sequentially arranged along a track line of the sensing plate 8 rotating along with the rotation of the counting sprocket 5, the proximity switch 9 is arranged on the sprocket support 6 through a proximity support 11, and the photoelectric switch 7 is arranged on the frame 1 through a switch support 12.
Specifically, a central hole 81 for the rotation shaft 10 to pass through is provided on a part of the sensing plate 8, arc-shaped adjusting holes 82 are provided on the sensing plate 8 corresponding to the two sides of the central hole 81, and mounting holes 51 corresponding to the arc-shaped adjusting holes 82 are provided on the side wall of the counting sprocket 5; the other portion of the sensing plate 8 is bent outwardly and radially extended to form a sensing portion 83.
The proximity bracket 11 comprises a vertical support plate 111 and an arc support plate 112 arranged at the upper end of the vertical support plate 111, the lower end of the vertical support plate 111 is fixed on the chain wheel bracket 6 through screws, the arc trend of the arc support plate 112 is consistent with the outline of the counting chain wheel 5, a plurality of strip-shaped adjusting holes are sequentially formed in the arc support plate 112, and the proximity switch 9 is locked on the strip-shaped adjusting holes through adjusting screws and corresponds to the sensing part 83.
The upper end of the switch bracket 12 is bent towards one side of the induction plate 8 to form an upper platform 121, the lower end is bent towards the opposite direction to form a lower platform 122, the lower platform 122 is fixed on the frame 1 by screws, and the photoelectric switch 7 is arranged on the upper platform 121 and corresponds to the induction part 83.
Preferably, the photoelectric switch 7 is a U-shaped photoelectric switch having a groove adapted to the sensing portion 83.
The driving chain wheel 2 comprises a first main driving chain wheel, a second main driving chain wheel, a first transition chain wheel, a second transition chain wheel, a driving component and a synchronizing component, wherein the upper part and the bottom of the inner side wall of the frame 1 are provided with supporting plates extending along the long side trend of the frame, and the two sides of the bottom surface of the printing platen 4 are provided with supporting wheels; the first main driving sprocket and the first transition sprocket are sequentially arranged on the left inner wall of the frame 1 in an order from outside to inside, the second transition sprocket and the second main driving sprocket are sequentially arranged on the right inner wall of the frame 1 in an order from outside to inside, the first transition sprocket and the second main driving sprocket are coaxially arranged, the driving device 3 is arranged on the frame 1 and drives the first main driving sprocket and the first transition sprocket to rotate simultaneously through a transmission assembly, the second main driving sprocket drives the second transition sprocket to rotate through a synchronization assembly, a transmission chain at the left side is wound around the first main driving sprocket, and a transmission chain at the right side is wound around the second main driving sprocket; the printing table 4 has four corners, wherein the left front corner of the printing table 4 is hinged to the drive chain in the left position and the right rear corner is hinged to the drive chain in the right position. The transmission assembly comprises a direct-connection speed reducer, a connecting shaft and a worm gear speed reducer, wherein the speed reduction output end of the direct-connection speed reducer is connected with the first main driving sprocket, the direct-connection output end of the direct-connection speed reducer is connected with the input shaft of the worm gear speed reducer through the connecting shaft, and the speed reduction output end of the worm gear speed reducer is connected with the first transition sprocket. The driving device 3 is a motor, and a driving shaft of the motor is connected with the input end of the direct-connected speed reducer. When in operation, the transmission chain at the left side and the transmission chain at the right side simultaneously drive the printing bedplate 4 to be conveyed forwards on the supporting pallet; the supporting wheels of the printing platen 4 are stably conveyed forward under the supporting action of the supporting pallets; when the printing platen 4 is conveyed to a preset position, the transition pulley on the printing platen 4 passes over the second main driving sprocket and is clamped on the groove of the second transition sprocket; at this time, the second transition sprocket is formed to support the right front corner of the printing platen 4 by cooperating with the transition pulley; the right rear corner of the printing platen 4 is hinged with a transmission chain at the right side position, and the right rear corner of the printing platen 4 is supported by the cooperation of a second main driving sprocket; the right rear corner of the printing platen 4 is hinged with a transmission chain at the right side position, and the right rear corner of the printing platen 4 is supported by the cooperation of a second main driving sprocket; the right front corner of the printing platen 4 is hinged with a transmission chain at the left side position, and the left front corner of the printing platen 4 is supported by the matching of the first main driving chain wheel; the left rear corner is matched with the first transition chain wheel through a transition pulley to support the left rear corner of the printing platen 4; under the rotation action of the first main driving sprocket, the second main driving sprocket and the second transition sprocket, the printing platen 4 starts to horizontally descend, the transition pulley is still clamped on the groove of the second transition sprocket, and the second transition sprocket still forms a right front corner of the printing platen 4 to support; the right rear corner of the printing platen 4 is hinged on a transmission chain at the right side position, and the hinged part of the transmission chain at the right side position and the right rear corner of the printing platen 4 is just meshed with a second main driving sprocket, so that the right rear corner of the printing platen 4 is still supported; the left front corner of the printing platen 4 is hinged on a transmission chain at a left side position, and the hinged part of the transmission chain at the left side position and the left front corner of the printing platen 4 is just meshed with the first main driving sprocket, so that the left front corner of the printing platen 4 is still supported; the first transition chain wheel supports the transition pulley, and the left rear corner of the printing platen 4 is supported by the transition pulley; when the printing platen 4 descends horizontally beyond the circle center of the first main driving sprocket, the transition pulley is still clamped on the groove of the second transition sprocket to support the right front corner of the printing platen 4; the right rear corner of the printing platen 4 is hinged on a transmission chain at the right side, and the hinged part of the transmission chain at the right side and the right rear corner of the printing platen 4 is still meshed with a second main driving sprocket, so that the right rear corner of the printing platen 4 is supported; the left front corner of the printing platen 4 is hinged on a transmission chain at the left side position, and the hinged part of the transmission chain at the left side position and the left front corner of the printing platen 4 is still meshed with the first main driving sprocket, so that the left front corner of the printing platen 4 is supported; the first transition chain wheel does not support the transition pulley; however, the right front corner, the right rear corner and the left front corner of the printing platen 4 are supported, so that the printing platen 4 stably descends horizontally; when the printing platen 4 descends horizontally to the lower supporting plate horizontal position, the transmission chain at the left side position and the transmission chain at the right side position simultaneously drive the printing platen 4 to be conveyed backwards on the lower supporting plate, and the supporting wheels of the printing platen 4 are stably conveyed backwards under the supporting action of the lower supporting plate; therefore, the printing table plate 4 does not turn over when being transported and reversed from one plane height to the other plane height, and the purpose of parallel movement of the printing table plate 4 is realized. The driving device 3 drives the first main driving sprocket and the first transition sprocket through the transmission assembly, the first transition sprocket and the second main driving sprocket are coaxially arranged, and the second main driving sprocket drives the second transition sprocket to rotate through the synchronization assembly, so that synchronous movement of two transmission chains positioned at the left position and the right position is ensured, the stress is uniform, and the conveying stability and the conveying precision of the printing platen 4 are further improved; the bottom surface of the printing platen 4 is provided with supporting wheels and supported by supporting plates, so that the stable movement of the printing platen 4 is further ensured; in addition, when the printing platen 4 ascends or descends, under the mutual matching and supporting actions of the first main driving chain wheel, the first transition chain wheel, the second transition chain wheel and the second main driving chain wheel, the printing platen 4 can not turn over due to rotation of the chain wheels, parallelism of the printing platen 4 is always guaranteed, lifting and conveying can be stably carried out under two different plane heights, the phenomenon that products fall down due to the fact that a common chain power structure is transmitted and turned over is effectively solved, and conveying stability and positioning accuracy are further improved.
During operation, the counting chain wheel 5 moves along with the transmission chain 13 and rotates, the induction plate 8 synchronously rotates along with the counting chain wheel 5, when the induction plate 8 runs to the proximity switch 9 at normal speed, the proximity switch 9 is triggered, the control system controls the driving device 3 to decelerate at the moment, when the induction plate 8 moves to the photoelectric switch 7 in a decelerating state, the photoelectric switch 7 is triggered, the control system cuts off the output of the driving device 3, the printing platen 4 stops, namely, firstly, the printing platen is stopped after deceleration, so that the problem that the positioning precision is influenced due to overlarge inertia caused by sudden braking is avoided, the stability of positioning and transmission is effectively improved, meanwhile, the error of movement positioning caused by the clearance of the transmission chain 13 is eliminated, and the repeated positioning precision is high.
Variations and modifications to the above would be obvious to persons skilled in the art to which the invention pertains from the foregoing description and teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way. Other mechanisms, which may be constructed in the same or similar manner as described in the above embodiments of the present invention, are within the scope of the present invention.
Claims (3)
1. The front parallel type printing platen moving, counting and positioning mechanism is characterized by comprising a frame, a driving sprocket arranged on the frame, a driving device capable of driving the driving sprocket to rotate, a driving chain matched with the driving sprocket, a printing platen movably arranged on the frame and dragged by the driving chain, a counting sprocket, a sprocket support, a photoelectric switch, a sensing plate and a proximity switch, wherein one side position of the sprocket support corresponding to the driving chain is arranged at the bottom of the frame, the counting sprocket is arranged on the sprocket support through a rotating shaft and meshed with the driving chain, the sensing plate is arranged on the side wall of the counting sprocket, and the proximity switch and the photoelectric switch are sequentially arranged along a track line of the rotation of the sensing plate along with the rotation of the counting sprocket, wherein the proximity switch is arranged on the sprocket support through the proximity support, and the photoelectric switch is arranged on the frame through the switch support;
a central hole for the rotation shaft to pass through is formed in one part of the induction plate, arc-shaped adjusting holes are formed in the induction plate at the positions corresponding to the two sides of the central hole, and mounting holes corresponding to the arc-shaped adjusting holes are formed in the side wall of the counting chain wheel; the other part of the induction plate is bent outwards and extends radially to form an induction part;
the proximity support comprises a vertical support plate and an arc support plate arranged at the upper end of the vertical support plate, the lower end of the vertical support plate is fixed on the chain wheel support through a screw, the arc trend of the arc support plate is consistent with the outline of the counting chain wheel, a plurality of strip-shaped adjusting holes are sequentially formed in the arc support plate, and the proximity switch is locked on the strip-shaped adjusting holes through adjusting screws and corresponds to the sensing part;
the upper end of the switch bracket is bent towards one side of the induction plate to form an upper platform, the lower end of the switch bracket is bent towards the opposite direction to form a lower platform, the lower platform is fixed on the rack through screws, and the photoelectric switch is arranged on the upper platform and corresponds to the induction part;
the photoelectric switch is a U-shaped photoelectric switch with a groove matched with the sensing part;
the transmission chain wheel comprises a first main driving chain wheel, a second main driving chain wheel, a first transition chain wheel, a second transition chain wheel, a transmission assembly and a synchronization assembly, wherein the upper part and the bottom of the inner side wall of the frame are provided with support supporting plates extending along the long side trend of the frame, and the two sides of the bottom surface of the printing platen are provided with support wheels; the first main driving sprocket and the first transition sprocket are sequentially arranged on the left inner wall of the frame in an outer-to-inner sequence, the second transition sprocket and the second main driving sprocket are sequentially arranged on the right inner wall of the frame in an outer-to-inner sequence, the first transition sprocket and the second main driving sprocket are coaxially arranged, the driving device is arranged on the frame and simultaneously drives the first main driving sprocket and the first transition sprocket to rotate through the driving assembly, the second main driving sprocket drives the second transition sprocket to rotate through the synchronizing assembly, the driving chain at the left side is wound around the first main driving sprocket, and the driving chain at the right side is wound around the second main driving sprocket; the printing platen is provided with four corners, wherein the left front corner of the printing platen is hinged on a transmission chain at the left side position, and the right rear corner is hinged on a transmission chain at the right side position;
the counting chain wheel rotates along with the movement of the transmission chain, the induction plate synchronously rotates along with the counting chain wheel, when the induction plate runs to the proximity switch at a normal speed, the proximity switch is triggered, the control system controls the driving device to decelerate at the moment, when the induction plate moves to the photoelectric switch in a decelerating state, the photoelectric switch is triggered, the control system cuts off the output of the driving device, and the printing platen stops, namely, the printing platen stops after decelerating.
2. The front parallel printing platen movement counting and positioning mechanism according to claim 1, wherein: the transmission assembly comprises a direct-connection speed reducer, a connecting shaft and a worm gear speed reducer, wherein the speed reduction output end of the direct-connection speed reducer is connected with the first main driving sprocket, the direct-connection output end of the direct-connection speed reducer is connected with the input shaft of the worm gear speed reducer through the connecting shaft, and the speed reduction output end of the worm gear speed reducer is connected with the first transition sprocket.
3. The front parallel printing platen movement counting and positioning mechanism according to claim 2, wherein: the driving device is a motor, and a driving shaft of the motor is connected with the input end of the direct-connected speed reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196110.8A CN108582974B (en) | 2018-03-09 | 2018-03-09 | Front parallel type printing platen moving, counting and positioning mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196110.8A CN108582974B (en) | 2018-03-09 | 2018-03-09 | Front parallel type printing platen moving, counting and positioning mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN108582974A CN108582974A (en) | 2018-09-28 |
| CN108582974B true CN108582974B (en) | 2023-07-28 |
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| CN201810196110.8A Active CN108582974B (en) | 2018-03-09 | 2018-03-09 | Front parallel type printing platen moving, counting and positioning mechanism |
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| CN112433465B (en) * | 2020-11-23 | 2021-10-08 | 深圳市精准时计科技有限公司 | Optical positioning control system for radio controlled clock movement |
| CN112607336B (en) * | 2020-12-03 | 2022-06-14 | 河钢股份有限公司承德分公司 | Positioning device for steel coil walking beam conveyor |
| CN113857910B (en) * | 2021-09-29 | 2022-10-21 | 深圳市鸿富精研科技有限公司 | Tubular workpiece pipe expanding processing system |
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