CN108820952B - Intermittent negative pressure synchronous paper transfer mechanism - Google Patents
Intermittent negative pressure synchronous paper transfer mechanism Download PDFInfo
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- CN108820952B CN108820952B CN201810868354.6A CN201810868354A CN108820952B CN 108820952 B CN108820952 B CN 108820952B CN 201810868354 A CN201810868354 A CN 201810868354A CN 108820952 B CN108820952 B CN 108820952B
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- Prior art keywords
- negative pressure
- driving wheel
- matched
- belt
- driving
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
- B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
- B65H5/224—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices by suction belts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/11—Dimensional aspect of article or web
- B65H2701/113—Size
- B65H2701/1131—Size of sheets
Abstract
The application discloses an intermittent negative pressure synchronous paper transfer mechanism, which comprises: a belt wheel; a conveyor belt; the negative pressure air chamber is arranged in a space surrounded by the conveying belt; the transmission shaft is arranged at one end of the frame and matched with the belt wheel; a driving wheel driven by the paper receiving roller to rotate; the clutch structure is matched with the driving wheel; the control shaft is used for enabling the driving wheel and the transmission shaft to be in a rotating fit state or a relatively fixed state; and the rotary valve is used for connecting the negative pressure air chamber and the vacuum equipment, comprises a valve core, and is controlled to switch between a first working state and a second working state through rotation of the valve core. The paper receiving roller always winds the rotating rod in the same direction, and the driving wheel and the driving shaft are matched in a rotating matched state and a relatively fixed state through the matching of the control shaft and the clutch structure, namely, the belt wheel is driven to rotate or not to rotate, and does not rotate in a reciprocating manner like the prior art, so that the paper receiving roller has the advantages of small structural vibration, stable operation and high printing qualification rate.
Description
Technical Field
The application relates to the field of printing machines, in particular to an intermittent negative pressure synchronous paper transfer mechanism.
Background
The platform type digital two-dimension code printer has the advantages that other manufacturers in China adopt the lateral unidirectional positioning of the cable-stayed ball conveying belt at present, the positioning precision is 0.3-0.5mm, the positioning precision is not high, and the quality of printing products cannot be effectively ensured.
The patent document with publication number of CN203173549U discloses a vacuum overrun paper transferring mechanism, as shown in figure 1, comprising a paper receiving roller, a paper receiving wheel matched with the paper receiving roller, a paper positioning side gauge, a front gauge, a perforated line belt for paper feeding, a reciprocating rotary wheel for driving the perforated line belt, and a conjugate cam for driving the reciprocating rotary wheel, wherein the perforated line belt is positioned in the paper feeding direction, an air chamber for absorbing paper by negative pressure is arranged under the front gauge, the air chamber is provided with a negative pressure air valve synchronously opened and closed with the conjugate cam, the reciprocating rotary wheel drives the perforated line belt to feed paper, the negative pressure air valve is just opened, and the reciprocating rotary wheel rotates after the perforated line belt feeds paper to the paper receiving roller.
Above-mentioned paper transfer mechanism is because of the reciprocating rotary wheel quality is big, and the impact vibration that produces when reciprocating operation is too big to make print the shower nozzle rock, two-dimensional code lines warp, and the printing qualification rate is low.
Disclosure of Invention
Aiming at the problems, the application provides an intermittent negative pressure synchronous paper transfer mechanism.
The technical scheme adopted by the application is as follows:
an intermittent negative pressure synchronous paper transferring mechanism comprises a frame and a paper receiving roller rotatably arranged on the frame, the paper conveying belt matched with the paper receiving roller further comprises:
a plurality of pulleys with axes arranged in parallel;
a conveyer belt with a plurality of ventilation holes wound on each belt wheel;
the negative pressure air chamber is provided with an opening end and is arranged in a space surrounded by the conveying belt, and the opening end of the negative pressure air chamber is opposite to the upper area of the conveying belt and is used for enabling the conveying belt to have suction force to adsorb paper;
the transmission shaft is rotatably arranged on the frame, and one end of the transmission shaft is matched with the belt pulley and used for driving at least one belt pulley to rotate;
the driving wheel is arranged on the driving shaft through a bearing and is in driving connection with the paper receiving roller and driven to rotate by the paper receiving roller;
the clutch structure is arranged on the transmission shaft and is matched with the transmission wheel;
the control shaft is rotatably arranged on the frame and used for controlling the clutch structure to work, so that the driving wheel and the transmission shaft are in a rotating fit state or a relatively fixed state; and
the rotary valve is used for connecting the negative pressure air chamber and the vacuum equipment and comprises a valve core, the valve core is coaxially fixed with the transmission shaft, the communication or disconnection between the negative pressure air chamber and the vacuum equipment is controlled through the rotation of the valve core, the rotary valve comprises a first working state and a second working state, and the rotary valve is switched between the first working state and the second working state along with the rotation of the valve core;
in the first working state, the negative pressure air chamber is disconnected with the vacuum equipment, the negative pressure air chamber cannot enable the conveying belt to have suction, and the control shaft is matched with the control clutch structure, so that the driving wheel and the driving shaft are in a rotating matched state;
when the belt conveyor is in the second working state, the negative pressure air chamber is communicated with the vacuum equipment, the negative pressure air chamber enables the conveying belt to have suction, the control shaft is matched with the clutch structure, the driving wheel and the driving shaft are in a relatively fixed state, the driving wheel can drive the driving shaft to synchronously rotate, and the driving shaft can drive the belt wheel and the conveying belt to work.
According to the intermittent negative pressure synchronous paper transfer mechanism, the paper receiving roller always rotates around the same direction rotating rod, and the driving wheel and the transmission shaft are matched in a rotating matched state and a relatively fixed state through the matching of the control shaft and the clutch structure, namely, the belt wheel is driven to rotate or not to rotate, and does not reciprocate like the prior art, so that the structure has no reciprocating motion, no impact vibration, stable operation and high printing qualification rate in the paper transfer process. On the premise of ensuring the precision of the constant-speed paper delivery and paper transfer, the working speed of the machine is doubled, and the high quality, the high efficiency and the high reliability of the printing quality are effectively ensured.
The rotary valve is arranged to enable the negative pressure air chamber to be switched between a negative pressure state and a non-negative pressure state, when the negative pressure air chamber is in a first working state, the negative pressure air chamber is disconnected from the vacuum equipment, the negative pressure air chamber cannot enable the conveying belt to have suction, the control shaft is matched with the control clutch structure, the driving wheel and the driving shaft are in a rotating matched state, namely the driving wheel rotates in an idling mode relative to the driving shaft, the driving shaft and the belt wheel do not rotate, and at the moment, paper can normally move relative to the conveying belt to be positioned; when in the second working state, the negative pressure air chamber is communicated with the vacuum equipment, the negative pressure air chamber enables the conveying belt to have suction force, the control shaft is matched with the clutch structure, the driving wheel and the driving shaft are in a relatively fixed state, the driving wheel can drive the driving shaft to synchronously rotate, the driving shaft can drive the belt wheel and the conveying belt to work, at the moment, the conveying belt can adsorb paper, and the paper can be driven to move along with the movement of the conveying belt, so that the paper is finally conveyed into the conveying belt.
In one embodiment of the present application, the clutch structure includes:
the clutch sleeve is sleeved on the transmission shaft in a movable way and can axially move relative to the transmission shaft, and the clutch sleeve and the transmission shaft are relatively fixed in the circumferential direction;
the friction disc is arranged between the driving wheel and the clutch sleeve and is fixed with the driving wheel or the clutch sleeve;
the spring seat is arranged on the transmission shaft;
one end of the compression spring is propped against the spring seat, and the other end of the compression spring is matched with the clutch sleeve, so that the clutch sleeve has a tendency of moving to one side of the driving wheel;
the shifting fork is rotatably arranged on the rack, the first end of the shifting fork is matched with the clutch sleeve, the second end of the shifting fork is matched with the control shaft, the control shaft is used for pressing the shifting fork in a first working state, the first end of the shifting fork drives the clutch sleeve to overcome the acting force of the compression spring and move to one side far away from the driving wheel, the driving wheel and the driving shaft are in a rotating matched state, the compression spring enables the clutch sleeve to be matched with the driving wheel in a second working state, and the driving wheel and the driving shaft are in a relatively fixed state and can rotate together.
The clutch sleeve and the transmission shaft are relatively fixed in the circumferential direction, namely, the clutch sleeve can drive the transmission shaft to rotate together; the clutch sleeve can axially move relative to the transmission shaft, and can be realized through a sliding groove and a sliding strip structure which are matched with each other in actual use.
Through the friction disc arranged between the clutch sleeve and the driving wheel, when the clutch sleeve is closely matched with the driving wheel, larger friction force can be provided, so that the clutch sleeve and the driving wheel are relatively fixed, and the clutch sleeve and the driving wheel are relatively fixed in the circumferential direction, namely the driving wheel and the driving wheel are relatively fixed; when the clutch sleeve is far away from the driving wheel under the action of the shifting fork, the driving wheel can idle relative to the rotating shaft.
In one embodiment of the present application, the spring seat is an adjustable spring seat, and the spring seat can adjust an axial position relative to the rotation shaft.
The compression amount of the spring can be adjusted through the adjustable spring seat structure, and the mechanism is convenient to debug.
In one embodiment of the application, the outer side wall of the clutch sleeve is provided with an annular groove, the first end of the shifting fork is a U-shaped part, two arms of the U-shaped part extend into the annular groove, the bottom wall of the annular groove is positioned between the two arms, the second end of the shifting fork is provided with a pressing head, an axial cam is fixedly arranged on the control shaft, the end face of the axial cam is in abutting fit with the pressing head, the axial cam is provided with a high-section area and a low-section area, the high-section area is matched with the pressing head in a first working state to drive the shifting fork to rotate, the U-shaped part drives the clutch sleeve to overcome the elasticity of the pressing spring and separate from the driving wheel, so that the driving wheel and the transmission shaft are in a rotating fit state, and the low-section area is matched with the pressing head in a relatively fixed state under the action of the pressing spring.
The cooperation of U type portion and annular groove, the structure is reliable, can not influence the rotation work of clutch housing and axis of rotation. The U-shaped part is propped against the side wall of the annular groove, so that when the shifting fork rotates under the action of the high-end area, the clutch sleeve can be driven to slide relative to the rotating shaft and away from the driving wheel.
In one embodiment of the application, the rotary valve further comprises a valve body, a first interface and a second interface are arranged on the valve body, the first interface is communicated with the negative pressure air chamber through a pipeline, the second interface is communicated with the vacuum equipment, the valve core is rotatably arranged on the valve body, the valve core is provided with a notch, a movable cavity is formed by the notch and the inner side wall of the valve body, the movable cavity rotates along with the rotation of the valve core, the second interface is not communicated with the movable cavity in a first working state, the negative pressure air chamber is disconnected from the vacuum equipment, the first interface is communicated with the uniform movable cavity of the second interface in a second working state, and the negative pressure air chamber is communicated with the vacuum equipment.
In practical use, the vacuum equipment can be a vacuum pump or a negative pressure pipeline.
In one embodiment of the present application, the valve body further includes a vent hole communicating with the outside air, and in the first operating state, the first interface and the vent hole are both in communication with the movable chamber, and in the second operating state, the vent hole is not in communication with the movable chamber.
The vent holes are arranged in a ventilation way, so that the negative pressure air chamber can be quickly restored to the normal pressure state in the first working state.
In one embodiment of the present application, the belt wheel has a first tooth on an outer side, the conveyor belt is a gear belt, and a second tooth meshed with the first tooth is on an inner side of the conveyor belt.
The prior art has the problem that the perforated line belt is a sheet-shaped belt, the circumference is five times of the bandwidth, the perforated line belt becomes very soft after being perforated, the stability of the perforated line belt is lost, and the paper fed out is difficult to ensure the paper transferring precision due to overlarge slip between the perforated line belt and a reciprocating rotary wheel due to reciprocating rotation and uncontrollable axial displacement. By arranging the first teeth and the second teeth, the conveyer belt does not slip or axially displace during high-speed operation, and all components are light and compact.
In one embodiment of the application, the paper receiving roller and the driving wheel are driven by a gear set, a chain or a belt; the control shaft is fixedly provided with a driving wheel which is matched with an external driving structure and is driven to rotate by the external driving structure.
In one embodiment of the application, when the driving wheel is fixed relative to the driving shaft, the movement speeds of the paper conveying belt and the conveying belt are the same.
In one embodiment of the application, the conveyor belt further comprises a front gauge and a side gauge mounted on the frame, and the conveyor belt is arranged between the front gauge and the side gauge. The front gauge and the side gauge are used for positioning paper sheets, are the prior art, and the structure of the front gauge and the side gauge is not specifically described in the application.
The beneficial effects of the application are as follows: according to the intermittent negative pressure synchronous paper transfer mechanism, the paper receiving roller always rotates around the same direction rotating rod, and the driving wheel and the transmission shaft are matched in a rotating matched state and a relatively fixed state through the matching of the control shaft and the clutch structure, namely, the belt wheel is driven to rotate or not to rotate, and does not reciprocate like the prior art, so that the structure has no reciprocating motion, no impact vibration, stable operation and high printing qualification rate in the paper transfer process. On the premise of ensuring the precision of the constant-speed paper delivery and paper transfer, the working speed of the machine is doubled, and the high quality, the high efficiency and the high reliability of the printing quality are effectively ensured.
Description of the drawings:
FIG. 1 is a schematic diagram of the prior art;
FIG. 2 is a schematic illustration of an intermittent negative pressure synchronous paper feed mechanism of the present application;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a cross-sectional view B-B of FIG. 2;
FIG. 5 is a schematic view of the clutch sleeve and U-shaped portion;
FIG. 6 is a cross-sectional view of the rotary valve in a first operating state;
fig. 7 is a cross-sectional view of the rotary valve in a second operating state.
The reference numerals in the drawings are as follows:
1. a frame; 2. a paper receiving roller; 3. a paper conveying belt; 4. a conveyor belt; 5. a belt wheel; 6. a negative pressure air chamber; 7. an open end; 8. a front gauge; 9. a side gauge; 10. a transmission shaft; 11. a driving wheel; 12. a clutch structure; 13. a control shaft; 14. rotating the valve; 15. a clutch sleeve; 16. an annular groove; 17. a friction plate; 18. a spring seat; 19. a compression spring; 20. a shifting fork; 21. a U-shaped part; 22. pressing head; 23. an axial cam; 24. a lower section region; 25. high Duan Ou; 26. a first tooth; 27. a second tooth; 28. an arm; 29. a bottom wall of the annular groove; 30. a valve body; 31. a first interface; 32. a second interface; 33. a movable cavity; 34. a vent hole; 35. a valve core; 36. and (3) driving wheels.
The specific embodiment is as follows:
the present application will be described in detail with reference to the accompanying drawings.
As shown in fig. 2, 3 and 4, an intermittent negative pressure synchronous paper transferring mechanism comprises a frame, a paper receiving roller rotatably installed on the frame, a paper conveying belt matched with the paper receiving roller, and further comprises:
a plurality of pulleys with axes arranged in parallel;
a conveyer belt with a plurality of ventilation holes wound on each belt wheel;
the negative pressure air chamber is provided with an opening end and is arranged in a space surrounded by the conveying belt, and the opening end of the negative pressure air chamber is opposite to the upper area of the conveying belt and is used for enabling the conveying belt to have suction force to adsorb paper;
the transmission shaft is rotatably arranged on the frame, and one end of the transmission shaft is matched with the belt pulley and used for driving at least one belt pulley to rotate;
the driving wheel is arranged on the driving shaft through a bearing and is in driving connection with the paper receiving roller and is driven to rotate by the paper receiving roller;
the clutch structure is arranged on the transmission shaft and is matched with the transmission wheel;
the control shaft is rotatably arranged on the frame and used for controlling the clutch structure to work, so that the driving wheel and the transmission shaft are in a rotating fit state or a relatively fixed state; and
the rotary valve is used for connecting the negative pressure air chamber and the vacuum equipment and comprises a valve core, the valve core is coaxially fixed with the transmission shaft, the communication or disconnection between the negative pressure air chamber and the vacuum equipment is controlled through the rotation of the valve core, the rotary valve comprises a first working state and a second working state, and the rotary valve is switched between the first working state and the second working state along with the rotation of the valve core;
in the first working state, the negative pressure air chamber is disconnected with the vacuum equipment, the negative pressure air chamber cannot enable the conveying belt to have suction, and the control shaft is matched with the control clutch structure, so that the driving wheel and the driving shaft are in a rotating matched state;
when the belt conveyor is in the second working state, the negative pressure air chamber is communicated with the vacuum equipment, the negative pressure air chamber enables the conveying belt to have suction, the control shaft is matched with the clutch structure, the driving wheel and the driving shaft are in a relatively fixed state, the driving wheel can drive the driving shaft to synchronously rotate, and the driving shaft can drive the belt pulley and the conveying belt to work.
According to the intermittent negative pressure synchronous paper transfer mechanism, the paper receiving roller always rotates around the same direction rotating rod, and the driving wheel and the transmission shaft are matched in a rotating matched state and a relatively fixed state through the matching of the control shaft and the clutch structure, namely, the belt wheel is driven to rotate or not to rotate, and does not reciprocate like the prior art, so that the structure has no reciprocating motion, no impact vibration, stable operation and high printing qualification rate in the paper transfer process. On the premise of ensuring the precision of the constant-speed paper delivery and paper transfer, the working speed of the machine is doubled, and the high quality, the high efficiency and the high reliability of the printing quality are effectively ensured.
The rotary valve is arranged to enable the negative pressure air chamber to be switched between a negative pressure state and a non-negative pressure state, when the negative pressure air chamber is in a first working state, the negative pressure air chamber is disconnected from the vacuum equipment, the negative pressure air chamber cannot enable the conveying belt to have suction, the control shaft is matched with the control clutch structure, the driving wheel and the driving shaft are in a rotating matched state, namely, the driving wheel rotates idle relative to the driving shaft, the driving shaft and the belt pulley do not rotate, and at the moment, paper can normally move relative to the conveying belt to be positioned; when in the second working state, the negative pressure air chamber is communicated with the vacuum equipment, the negative pressure air chamber enables the conveying belt to have suction force, the control shaft is matched with the clutch structure, the driving wheel and the driving shaft are in a relatively fixed state, the driving wheel can drive the driving shaft to synchronously rotate, the driving shaft can drive the belt wheel and the conveying belt to work, at the moment, the conveying belt can adsorb paper, and the paper can be driven to move along with the movement of the conveying belt, so that the paper is finally fed into the conveying belt.
As shown in fig. 3, in the present embodiment, the clutch structure includes:
the clutch sleeve is sleeved on the transmission shaft in a movable way and can axially move relative to the transmission shaft, and the clutch sleeve and the transmission shaft are relatively fixed in the circumferential direction;
the friction disc is arranged between the driving wheel and the clutch sleeve and is fixed with the driving wheel or the clutch sleeve;
the spring seat is arranged on the transmission shaft;
one end of the compression spring is propped against the spring seat, and the other end of the compression spring is matched with the clutch sleeve, so that the clutch sleeve has a tendency of moving to one side of the driving wheel;
the shifting fork is rotatably arranged on the rack, the first end of the shifting fork is matched with the clutch sleeve, the second end of the shifting fork is matched with the control shaft, the control shaft is used for pressing the shifting fork in a first working state, the first end of the shifting fork drives the clutch sleeve to overcome the acting force of the compression spring and move to one side far away from the driving wheel, the driving wheel and the driving shaft are in a rotating matched state, the compression spring enables the clutch sleeve to be matched with the driving wheel in a second working state, and the driving wheel and the driving shaft are in a relatively fixed state and can rotate together.
The clutch sleeve and the transmission shaft are relatively fixed in the circumferential direction, namely, the clutch sleeve can drive the transmission shaft to rotate together; the clutch sleeve can axially move relative to the transmission shaft, and can be realized through a sliding groove and a sliding strip structure which are matched with each other in actual use.
Through the friction disc arranged between the clutch sleeve and the driving wheel, when the clutch sleeve is closely matched with the driving wheel, larger friction force can be provided, so that the clutch sleeve and the driving wheel are relatively fixed, and the clutch sleeve and the driving wheel are relatively fixed in the circumferential direction, namely the driving wheel and the driving wheel are relatively fixed; when the clutch sleeve is far away from the driving wheel under the action of the shifting fork, the driving wheel can idle relative to the rotating shaft.
In this embodiment, the spring seat is an adjustable spring seat, and the spring seat can adjust the axial position relative to the rotation shaft. The compression amount of the spring can be adjusted through the adjustable spring seat structure, and the mechanism is convenient to debug.
As shown in fig. 3 and 5, in this embodiment, the outer side wall of the clutch sleeve has an annular groove, the first end of the fork is a U-shaped portion, two arms of the U-shaped portion extend into the annular groove, the bottom wall of the annular groove is located between the two arms, the second end of the fork is provided with a pressing head, an axial cam is fixedly mounted on the control shaft, the end face of the axial cam is in abutting fit with the pressing head, the axial projection is provided with a high-section area and a low-section area, in a first working state, the high-section area is matched with the pressing head, the fork is driven to rotate, the U-shaped portion drives the clutch sleeve to overcome the elasticity of the pressing spring and separate from the driving wheel, so that the driving wheel and the driving shaft are in a rotating fit state, in a second working state, the low-section area is matched with the pressing head, and the driving wheel and the driving shaft are in a relatively fixed state under the action of the pressing spring.
The cooperation of U type portion and annular groove, the structure is reliable, can not influence the rotation work of clutch housing and axis of rotation. The U-shaped part is propped against the side wall of the annular groove, so that when the shifting fork rotates under the action of the high-end area, the clutch sleeve can be driven to slide relative to the rotating shaft and away from the driving wheel.
As shown in fig. 6 and 7, in this embodiment, the rotary valve further includes a valve body, the valve body has a first interface and a second interface, the first interface is communicated with the negative pressure air chamber through a pipeline, the second interface is communicated with the vacuum device, the valve core is rotatably disposed on the valve body, the valve core has a notch, the notch and the inner side wall of the valve body form a movable cavity, the movable cavity rotates along with rotation of the valve core, in a first working state, the second interface is not communicated with the movable cavity, the negative pressure air chamber is disconnected with the vacuum device, in a second working state, the first interface and the second interface are uniformly communicated with the movable cavity, and the negative pressure air chamber is communicated with the vacuum device.
In practical use, the vacuum equipment can be a vacuum pump or a negative pressure pipeline.
As shown in fig. 6 and 7, in the present embodiment, the valve body further includes a vent hole communicating with the outside air, and in the first operation state, both the first port and the vent hole communicate with the movable chamber, and in the second operation state, the vent hole does not communicate with the movable chamber. The vent holes are arranged in a ventilation way, so that the negative pressure air chamber can be quickly restored to the normal pressure state in the first working state.
As shown in fig. 4, in this embodiment, the pulley has a first tooth on the outside, the belt is a toothed belt, and a second tooth on the inside that meshes with the first tooth.
The prior art has the problem that the perforated line belt is a sheet-shaped belt, the circumference is five times of the bandwidth, the perforated line belt becomes very soft after being perforated, the stability of the perforated line belt is lost, and the paper fed out is difficult to ensure the paper transferring precision due to overlarge slip between the perforated line belt and a reciprocating rotary wheel due to reciprocating rotation and uncontrollable axial displacement. By arranging the first teeth and the second teeth, the conveyer belt does not slip or axially displace during high-speed operation, and all components are light and compact.
As shown in fig. 2, in this embodiment, the pickup roller and the driving wheel are driven by a gear set, a chain or a belt; the control shaft is fixedly provided with a driving wheel which is matched with an external driving structure and is driven to rotate by the external driving structure.
In this embodiment, when the driving wheel is fixed relative to the driving shaft, the movement speeds of the paper conveying belt and the conveying belt are the same.
As shown in fig. 2, in this embodiment, the apparatus further includes a front gauge and a side gauge mounted on the frame, and the conveyor belt is disposed between the front gauge and the side gauge. The front gauge and the side gauge are used for positioning paper sheets, are the prior art, and the structure of the front gauge and the side gauge is not specifically described in the application.
The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the application, but rather is intended to cover all equivalent structures as modifications within the scope of the application, either directly or indirectly, as may be contemplated by the present application.
Claims (7)
1. The utility model provides an intermittent type negative pressure synchronous paper transfer mechanism, includes frame, rotates the paper receiving roller of installing in the frame, with paper receiving roller complex paper feeding tape, its characterized in that still includes:
a plurality of pulleys with axes arranged in parallel;
a conveyer belt with a plurality of ventilation holes wound on each belt wheel;
the negative pressure air chamber is provided with an opening end and is arranged in a space surrounded by the conveying belt, and the opening end of the negative pressure air chamber is opposite to the upper area of the conveying belt and is used for enabling the conveying belt to have suction force to adsorb paper;
the transmission shaft is rotatably arranged on the frame, and one end of the transmission shaft is matched with the belt pulley and used for driving at least one belt pulley to rotate;
the driving wheel is arranged on the driving shaft through a bearing and is in driving connection with the paper receiving roller and driven to rotate by the paper receiving roller;
the clutch structure is arranged on the transmission shaft and is matched with the transmission wheel;
the control shaft is rotatably arranged on the frame and used for controlling the clutch structure to work, so that the driving wheel and the transmission shaft are in a rotating fit state or a relatively fixed state; and
the rotary valve is used for connecting the negative pressure air chamber and the vacuum equipment and comprises a valve core, the valve core is coaxially fixed with the transmission shaft, the communication or disconnection between the negative pressure air chamber and the vacuum equipment is controlled through the rotation of the valve core, the rotary valve comprises a first working state and a second working state, and the rotary valve is switched between the first working state and the second working state along with the rotation of the valve core;
in the first working state, the negative pressure air chamber is disconnected with the vacuum equipment, the negative pressure air chamber cannot enable the conveying belt to have suction, and the control shaft is matched with the control clutch structure, so that the driving wheel and the driving shaft are in a rotating matched state;
in a second working state, the negative pressure air chamber is communicated with the vacuum equipment, the negative pressure air chamber enables the conveying belt to have suction, the control shaft is matched with the clutch structure, the driving wheel and the driving shaft are in a relatively fixed state, the driving wheel can drive the driving shaft to synchronously rotate, and the driving shaft can drive the belt wheel and the conveying belt to work;
the outer side of the belt wheel is provided with a first tooth, the conveying belt is a gear belt, and the inner side of the conveying belt is provided with a second tooth meshed with the first tooth; the paper receiving roller and the driving wheel are driven by a gear set, a chain or a belt; the control shaft is fixedly provided with a driving wheel which is matched with an external driving structure and is driven to rotate by the external driving structure; the device also comprises a front gauge and a side gauge which are arranged on the frame, and the conveying belt is arranged between the front gauge and the side gauge.
2. The intermittent negative pressure synchronous paper feeding mechanism of claim 1, wherein the clutch structure comprises:
the clutch sleeve is sleeved on the transmission shaft in a movable way and can axially move relative to the transmission shaft, and the clutch sleeve and the transmission shaft are relatively fixed in the circumferential direction;
the friction disc is arranged between the driving wheel and the clutch sleeve and is fixed with the driving wheel or the clutch sleeve;
the spring seat is arranged on the transmission shaft;
one end of the compression spring is propped against the spring seat, and the other end of the compression spring is matched with the clutch sleeve, so that the clutch sleeve has a tendency of moving to one side of the driving wheel;
the shifting fork is rotatably arranged on the rack, the first end of the shifting fork is matched with the clutch sleeve, the second end of the shifting fork is matched with the control shaft, the control shaft is used for pressing the shifting fork in a first working state, the first end of the shifting fork drives the clutch sleeve to overcome the acting force of the compression spring and move to one side far away from the driving wheel, the driving wheel and the driving shaft are in a rotating matched state, the compression spring enables the clutch sleeve to be matched with the driving wheel in a second working state, and the driving wheel and the driving shaft are in a relatively fixed state and can rotate together.
3. The intermittent negative pressure synchronous paper feeding mechanism of claim 2, wherein the spring seat is an adjustable spring seat, the spring seat being capable of adjusting an axial position relative to the rotational axis.
4. The intermittent negative pressure synchronous paper transfer mechanism according to claim 2, wherein the outer side wall of the clutch sleeve is provided with an annular groove, the first end of the shifting fork is a U-shaped part, two arms of the U-shaped part extend into the annular groove, the bottom wall of the annular groove is positioned between the two arms, the second end of the shifting fork is provided with a pressing head, the control shaft is fixedly provided with an axial cam, the end face of the axial cam is in abutting fit with the pressing head, the axial cam is provided with a high-stage area and a low-stage area, in a first working state, the high-stage area is matched with the pressing head to drive the shifting fork to rotate, the U-shaped part drives the clutch sleeve to overcome the elasticity of the pressing spring and separate from the driving wheel, so that the driving wheel and the driving shaft are in a rotating fit state, in a second working state, the low-stage area is matched with the pressing head, and the driving wheel and the driving shaft are in a relatively fixed state under the action of the pressing spring.
5. The intermittent negative pressure synchronous paper transfer mechanism of claim 1, wherein the rotary valve further comprises a valve body, the valve body is provided with a first interface and a second interface, the first interface is communicated with the negative pressure air chamber through a pipeline, the second interface is communicated with the vacuum equipment, the valve core is rotatably arranged on the valve body, the valve core is provided with a notch, a movable cavity is formed by the notch and the inner side wall of the valve body, the movable cavity rotates along with the rotation of the valve core, the second interface is not communicated with the movable cavity in the first working state, the negative pressure air chamber is disconnected from the vacuum equipment, the first interface and the second interface are uniformly communicated with the movable cavity in the second working state, and the negative pressure air chamber is communicated with the vacuum equipment.
6. The intermittent negative pressure synchronous paper feeding mechanism of claim 5, wherein the valve body further comprises a vent in communication with the outside air, both the first port and the vent being in communication with the movable chamber in the first operating state and the vent not being in communication with the movable chamber in the second operating state.
7. The intermittent negative pressure synchronous paper feeding mechanism as claimed in claim 1, wherein the movement speed of the paper feeding belt and the conveyor belt is the same when the driving wheel is fixed relative to the driving shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810868354.6A CN108820952B (en) | 2018-08-02 | 2018-08-02 | Intermittent negative pressure synchronous paper transfer mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810868354.6A CN108820952B (en) | 2018-08-02 | 2018-08-02 | Intermittent negative pressure synchronous paper transfer mechanism |
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| CN108820952A CN108820952A (en) | 2018-11-16 |
| CN108820952B true CN108820952B (en) | 2023-08-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DD127618A1 (en) * | 1976-08-30 | 1977-10-05 | ||
| CN101780723A (en) * | 2010-03-23 | 2010-07-21 | 安丘信川机械有限责任公司 | Horizontal reciprocating flat-press indentation die-cutting machine |
| CN102431818A (en) * | 2011-11-01 | 2012-05-02 | 陈晓滨 | Paper conveying device |
| JP2014198629A (en) * | 2013-03-11 | 2014-10-23 | 株式会社小森コーポレーション | Sheet supply device |
| CN107032163A (en) * | 2017-04-22 | 2017-08-11 | 广州明森科技股份有限公司 | A kind of paper tape conveying device |
| CN208716467U (en) * | 2018-08-02 | 2019-04-09 | 浙江通得数字印刷设备制造有限公司 | The synchronous feeding mechanism of intermittent negative pressure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT333193B (en) * | 1974-12-23 | 1976-11-10 | Gao Ges Automation Org | DISCHARGE AND STACKING DEVICE FOR FLAT TRANSPORTED GOODS, SUCH AS PAPER SHEETS, DOCUMENTS AND THE LIKE |
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- 2018-08-02 CN CN201810868354.6A patent/CN108820952B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD127618A1 (en) * | 1976-08-30 | 1977-10-05 | ||
| CN101780723A (en) * | 2010-03-23 | 2010-07-21 | 安丘信川机械有限责任公司 | Horizontal reciprocating flat-press indentation die-cutting machine |
| CN102431818A (en) * | 2011-11-01 | 2012-05-02 | 陈晓滨 | Paper conveying device |
| JP2014198629A (en) * | 2013-03-11 | 2014-10-23 | 株式会社小森コーポレーション | Sheet supply device |
| CN107032163A (en) * | 2017-04-22 | 2017-08-11 | 广州明森科技股份有限公司 | A kind of paper tape conveying device |
| CN208716467U (en) * | 2018-08-02 | 2019-04-09 | 浙江通得数字印刷设备制造有限公司 | The synchronous feeding mechanism of intermittent negative pressure |
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| CN108820952A (en) | 2018-11-16 |
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