CN115077337A - High-precision roller type metering device - Google Patents
High-precision roller type metering device Download PDFInfo
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- CN115077337A CN115077337A CN202210768150.1A CN202210768150A CN115077337A CN 115077337 A CN115077337 A CN 115077337A CN 202210768150 A CN202210768150 A CN 202210768150A CN 115077337 A CN115077337 A CN 115077337A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/04—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
- G01B5/043—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/04—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
- G01B7/042—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention provides a high-precision roller type metering device, and belongs to the technical field of automatic metering equipment. The invention comprises a tension pinch roller, a singlechip system and a photoelectric isolation device, wherein the tension pinch roller comprises a spring support and a metering pinch roller, the metering pinch roller comprises a metering transmission device and a pinch roller, the metering transmission device, the photoelectric isolation device and the singlechip system are electrically connected in sequence, when the pinch roller rotates for a certain angle, the metering transmission device forms a length electric signal, the length electric signal is transmitted to the singlechip system through the photoelectric isolation device to record the rotating length of the pinch roller, and then the product can be subjected to high-precision length measurement. Compared with the traditional meter counter, the invention has the advantages of strong anti-interference capability, high design precision, high reliability, convenient use, clear reading, wide measurement dimension and the like, and is widely applied to the display and control of the length, the quantity, the flow and the like of industries such as rubber, papermaking, plastics, textile, printing and the like.
Description
The technical field is as follows:
the invention belongs to the technical field of automatic metering equipment, and particularly relates to a high-precision roller type metering device.
The background art comprises the following steps:
with the increasing of domestic economic development and technical means, the metering of the produced products is often needed in the industrial production process, such as the metering of the length, the quantity and the like of qualified products. The invention is not limited to the measurement of single dimension of products, and a measuring device capable of realizing multiple dimensions such as measuring length, quantity, time and the like is formed by applying a measuring pinch roller, a single chip microcomputer system and a photoelectric isolation device. Compared with the traditional meter counter, the invention has the advantages of strong anti-interference capability, high design precision, high reliability, convenient use, clear reading and the like, and is widely applied to the display and control of the length, the quantity, the flow and the like of industries such as rubber, paper making, plastics, textile, printing and the like.
The similar meter counter products have the following problems in the metering process:
1. the problem of error of multiple meters caused by inaccurate detection signals and the problem of dead halt caused by interference of an electric signal input circuit to a single chip microcomputer;
2. the problem of few metering errors caused by slippage between the pinch roller and the detected object can be solved;
3. only single dimension such as product length can be measured.
For example, the invention is a device for automatically measuring the number and the length of cloth, which is provided by a device and a method for automatically measuring the number and the length of the cloth, and which is disclosed by the patent publication No. CN114353714A, wherein a traction wheel, a tensioning mechanism and a measuring mechanism are sequentially arranged on a base from left to right, the measuring mechanism comprises a first connecting frame arranged oppositely from front to back, and a first rolling roller and a second rolling roller which are rotatably arranged between the first connecting frame, the invention can only measure the length of a product, and the invention has the problems that a detection signal is inaccurate, and even a singlechip is interfered to cause a crash.
The invention content is as follows:
the invention provides a high-precision roller type metering device, which adopts the following technical scheme:
including tensioning pinch roller, single chip microcomputer system and photoelectric isolation device, the tensioning pinch roller includes spring bracket and measurement pinch roller, the measurement pinch roller includes measurement transmission device and pinch roller, and measurement transmission device, photoelectric isolation device and single chip microcomputer system electric connection in proper order, every certain angle of rotation of pinch roller, measurement transmission device form a length signal of telecommunication, through photoelectric isolation device, and the rethread is transmitted to single chip microcomputer system and is recorded pinch roller pivoted length.
The spring support comprises a connecting seat 1, a connecting rod 2, a connecting sleeve 4, a connecting plate 6 and a fastening bolt 11, wherein the connecting rod 2 is arranged on the connecting seat 1, a notch is formed in the middle of the top of the connecting seat 1, first threaded holes 3 which penetrate through the connecting rod are formed in two sides of the notch and used for being matched with the bolt to fix the connecting rod 2, the connecting sleeve 4 is sleeved at the end part, away from the connecting seat 1, of the connecting rod 2, a plurality of second threaded holes 5 which penetrate through the connecting sleeve are uniformly distributed in the connecting sleeve 4 along the circumferential direction and used for being matched with the bolt to fix the connecting sleeve 4, one end of the connecting plate 6 is attached to the end part of the connecting sleeve, and the fastening bolt 11 penetrates through the connecting plate 6 and is in threaded connection with the threaded holes formed in the end part of the connecting rod 2 and used for fixing the connecting plate 6; a through hole 8 is formed in the end, far away from the connecting rod 2, of the connecting plate 6, a plurality of third threaded holes 9 are uniformly distributed in the circumferential direction outside the through hole and used for fixing the metering pinch roller, connecting holes are symmetrically formed in the upper side and the lower side of one end, provided with the through hole, of the connecting plate 6, one end of the spring 12 is buckled on a bolt in threaded connection with the second threaded hole 5, and the other end of the spring is buckled on a bolt in threaded connection with the connecting holes; the linear distance between the bolt screwed with the second threaded hole and the bolt screwed with the connecting hole is equal to the length of the spring, the spring 12 and the connecting plate 6 are controlled to form a certain included angle beta along with the length adjustment of the connecting plate 6 in a natural state when the spring is not under tension or pressure, and when the unfolding included angle alpha of the connecting plate is 55-65 degrees, the pressure F of a plane contact point of the pressing wheel parallel to the connecting plate 6 is ensured to be 2.25-2.35 KN.
The unfolding angle alpha of the connecting plate is an angle which rotates along the circumference of the connecting rod 2 from the position of the connecting plate 6 when the spring 12 is not under tension or pressure and an angle which is unfolded under a certain force of the connecting plate, and the relation between the included angle beta formed by the spring 12 and the connecting plate 6 and the length of the connecting plate 6 is
Wherein F is the pressure of the contact point of the pinch roller and the horizontal plane, L is the linear distance from the intersection center point of the connecting plate 6 and the connecting rod 2 to the center point of the through hole 8 of the connecting plate, n is the linear distance from the point, perpendicular to L, of the bolt fastened by the spring at the pinch roller end to the center point of the through hole 8, k is the spring elasticity coefficient, the range is 0.70-0.75KN/mm, L is the length of the spring after being stressed, and L is the length of the spring after being stressed 0 Is the original length of the spring.
The pinch roller comprises a gear and a rubber coating wheel.
When the spring support is installed, the connecting seat (1) is fixed on a horizontal plane according to a device needing to be metered, and the metering pinch roller tightly presses an object needing to be metered.
The single chip microcomputer system can set the length represented by the length electric signal and the angle required by the length electric signal pinch roller to rotate, and can also set the object time and/or interval time interval of qualified products, and when the time signal received by the single chip microcomputer is not in the object time and/or interval time qualified interval of the qualified products, the object is not measured.
The metering and conveying device further comprises an object detection device, the object time is the time when an object on the conveying belt with the same linear velocity as the pinch roller passes through the object detection device, and the interval time is the time when the previous object just completely passes through the object detection device and the next object just reaches the object detection device.
The photoelectric isolation device enables a signal input circuit to bear EFT group pulse interference of 4KV, wherein a resistor R5 is connected with an optocoupler OP1 in parallel and connected with a resistor R3 and a diode D4 in series to form an input loop, a resistor R7 and a capacitor C1 are connected in parallel and connected in series between a resistor R9 and the optocoupler OP1 to form an output loop, and the input loop and the output loop do not belong to the same power supply.
The resistor R5 is 4.65-4.75 Komega, the model of the diode D4 is 1N4148, the resistor R3 is 2.15-2.25 Komega, the resistor R7 is 0.95-1.05 Komega, the resistor R9 is 4.65-4.75 Komega, and the capacitor C1 is 9-11 nf.
The invention has the following beneficial effects:
1. through the photoelectric isolation device, the accuracy of detection signals is ensured, the problem of meter counting errors is reduced, and the problem of halt caused by interference of an electric signal input circuit on a single chip microcomputer is solved;
2. the problem of meter error is reduced between the pinch roller and the detected object through scientific calculation;
3. the length, the quantity, the used time of qualified products and other dimensions of the products can be measured.
Drawings
In order to more clearly illustrate the solution of the present application, the drawings needed for describing the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic connection diagram of a high-precision roller-type metering device according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of a spring support of a high-precision roller-type metering device according to an embodiment of the present invention. The labels in the figures are: 1-a connecting seat, 2-a connecting rod, 3-a first threaded hole, 4-a connecting sleeve, 5-a second threaded hole, 6-a connecting plate, 7-a connecting hole, 8-a through hole, 9-a third threaded hole, 10-a pressing plate, 11-a fastening bolt and 12-a spring.
Fig. 3 is a schematic view illustrating an angle β of a connecting plate of a spring support of a high-precision roller-type metering device according to an embodiment of the present invention.
Fig. 4 is a schematic view of an angle β when L of a connecting plate of a spring support of the high-precision roller-type metering device is 105mm in the embodiment of the present invention.
Fig. 5 is a schematic view of an angle α of a connecting plate of a spring support of a high-precision roller-type metering device according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a spring support of a high-precision roller-type metering device according to an embodiment of the present invention, where L is 105mm, and a deployment angle is 60 °.
FIG. 7 is a diagram of an optoelectronic isolation circuit of a high precision roller-type metering device according to an embodiment of the present invention.
The specific implementation mode is as follows:
unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly appreciate that the embodiments described herein can be combined with other embodiments, and that the embodiments described are only a subset of the embodiments of the invention, and not all embodiments.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
The utility model provides a high accuracy roller type metering device includes tensioning pinch roller, single chip microcomputer system and photoelectric isolation device, the tensioning pinch roller includes spring bracket and measurement pinch roller, the measurement pinch roller includes measurement transmission device and pinch roller, and measurement transmission device, photoelectric isolation device and single chip microcomputer system electric connection in proper order, every certain angle of rotation of pinch roller, measurement transmission device form a length signal of telecommunication, through photoelectric isolation device, and the rethread is transmitted the single chip microcomputer system and is recorded pinch roller pivoted length.
The spring support comprises a connecting seat 1, a connecting rod 2, a connecting sleeve 4, a connecting plate 6 and a fastening bolt 11, wherein the connecting rod 2 is arranged on the connecting seat 1, a notch is formed in the middle of the top of the connecting seat 1, first threaded holes 3 which penetrate through the connecting rod are formed in two sides of the notch and used for being matched with the bolt to fix the connecting rod 2, the connecting sleeve 4 is sleeved at the end part, away from the connecting seat 1, of the connecting rod 2, a plurality of second threaded holes 5 which penetrate through the connecting sleeve are uniformly distributed in the connecting sleeve 4 along the circumferential direction and used for being matched with the bolt to fix the connecting sleeve 4, one end of the connecting plate 6 is attached to the end part of the connecting sleeve, and the fastening bolt 11 penetrates through the connecting plate 6 and is in threaded connection with the threaded holes formed in the end part of the connecting rod 2 and used for fixing the connecting plate 6; a through hole is formed in the end part, far away from the connecting rod 2, of the connecting plate 6, a plurality of third threaded holes 9 are uniformly distributed in the circumferential direction on the outer side of the through hole and used for fixing the metering pinch roller, connecting holes are symmetrically formed in the upper side and the lower side of one end, provided with the through hole, of the connecting plate 6, one end of the spring 12 is buckled on a bolt in threaded connection with the second threaded hole 5, and the other end of the spring is buckled on a bolt in threaded connection with the connecting holes; the linear distance between the bolt screwed with the second threaded hole and the bolt screwed with the connecting hole is equal to the length of the spring, the spring 12 and the connecting plate 6 are controlled to form a certain included angle beta along with the length adjustment of the connecting plate 6 in a natural state when the spring is not under tension or pressure, and when the unfolding included angle alpha of the connecting plate is 55-65 degrees, the pressure F of a plane contact point of the pressing wheel parallel to the connecting plate 6 is ensured to be 2.25-2.35 KN.
The connection plate spread angle alpha is an angle which rotates along the circumference of the connection rod 2 from the position of the connection plate 6 when the spring 12 is not under tension or pressure, and is spread under a certain force of the connection plate, and the relation between the included angle beta formed by the spring 12 and the connection plate 6 and the length of the connection plate 6 is
Wherein F is the pressure of the contact point of the pinch roller and the horizontal plane, L is the straight line distance from the intersection center point of the connecting plate 6 and the connecting rod 2 to the center point of the through hole 8 of the connecting plate, n is the straight line distance from the point vertical to L of a bolt buckled with a spring at the pinch roller end to the center point of the through hole 8, k is the spring elasticity coefficient, the range is 0.70-0.75KN/mm, L is the length of the spring after being stressed, and L is the length of the spring after being stressed 0 Is the original length of the spring.
The pinch roller comprises a gear and a rubber coating wheel.
The single chip microcomputer system can set the length represented by the length electric signal and the angle required by the length electric signal pinch roller to rotate, and can also set the object time and/or interval time interval of qualified products, and when the time signal received by the single chip microcomputer is not in the object time and/or interval time qualified interval of the qualified products, the object is not measured.
The metering and conveying device further comprises an object detection device, the object time is the time when an object on the conveying belt with the same linear velocity as the pinch roller passes through the object detection device, and the interval time is the time when the previous object just completely passes through the object detection device and the next object just reaches the object detection device.
The photoelectric isolation device enables a signal input circuit to bear EFT group pulse interference of 4KV, wherein a resistor R5 is connected with an optocoupler OP1 in parallel and connected with a resistor R3 and a diode D4 in series to form an input loop, a resistor R7 and a capacitor C1 are connected in parallel and connected in series between a resistor R9 and the optocoupler OP1 to form an output loop, and the input loop and the output loop do not belong to the same power supply.
The resistor R5 is preferably 4.70K omega, the diode D4 is 1N4148 in model, the resistor R3 is preferably 2.20K omega, the resistor R7 is preferably 1.00K omega, the resistor R9 is preferably 4.70K omega, and the capacitor C1 is 10 nf.
Example 1:
as shown in FIG. 3, the L length of the connecting plate is 105mm, and the angle is beta.
The spring support comprises a connecting seat 1, a connecting rod 2, a connecting sleeve 4, a connecting plate 6 and a fastening bolt 11, wherein the connecting rod 2 is arranged on the connecting seat 1, a notch is formed in the middle of the top of the connecting seat 1, first threaded holes 3 which penetrate through the connecting rod are formed in two sides of the notch and used for being matched with the bolt to fix the connecting rod 2, the connecting sleeve 4 is sleeved at the end part, away from the connecting seat 1, of the connecting rod 2, a plurality of second threaded holes 5 which penetrate through the connecting sleeve are uniformly distributed in the connecting sleeve 4 along the circumferential direction and used for being matched with the bolt to fix the connecting sleeve 4, one end of the connecting plate 6 is attached to the end part of the connecting sleeve, and the fastening bolt 11 penetrates through the connecting plate 6 and is in threaded connection with the threaded holes formed in the end part of the connecting rod 2 and used for fixing the connecting plate 6; a through hole is formed in the end part, far away from the connecting rod 2, of the connecting plate 6, a plurality of third threaded holes 9 are uniformly distributed in the circumferential direction on the outer side of the through hole and used for fixing the metering pinch roller, connecting holes are symmetrically formed in the upper side and the lower side of one end, provided with the through hole, of the connecting plate 6, one end of the spring 12 is buckled on a bolt in threaded connection with the second threaded hole 5, and the other end of the spring is buckled on a bolt in threaded connection with the connecting holes; the linear distance between the bolt in threaded connection with the second threaded hole and the bolt in threaded connection with the connecting hole is equal to the length of the spring, the spring 12 and the connecting plate 6 are controlled to form a certain included angle beta along with the length adjustment of the connecting plate 6 in a natural state when the spring is not under tension or pressure, and when the included angle alpha of the expansion of the connecting plate is 60 degrees, the pressure F of a contact point of a surface where the pressing wheel is parallel to the connecting plate 6 is guaranteed to be 2.30 KN.
The connection plate expansion angle alpha is an angle rotated along the circumference of the connection rod 2 from the position of the connection plate 6 when the spring 12 is not under tension or pressure, and an angle expanded by a certain force of the connection plate, and the spring 12The angle beta formed between the connecting plate 6 and the length of the connecting plate 6 is
Wherein F is the pressure of the contact point of the pinch roller and the horizontal plane, L is the linear distance from the intersection center point of the connecting plate 6 and the connecting rod 2 to the center point of the through hole 8 of the connecting plate, preferably 105mm, n is the linear distance from the point of the bolt which is fastened by the spring at the pinch roller end and is vertical to L to the center point of the through hole 8, n is preferably 27mm, k is the spring elasticity coefficient of 0.70KN/mm, L is the length of the spring after being stressed of 92.0mm, and L is the length of the spring after being stressed 0 The original length of the spring is 98.6mm, and the included angle beta formed by the spring 12 and the connecting plate 6 is 25 degrees.
The pinch roller comprises a gear and a rubber coating wheel.
Example 2:
as shown in FIG. 4, the L length of the connecting plate is 165mm, and the angle is beta.
The spring support comprises a connecting seat 1, a connecting rod 2, a connecting sleeve 4, a connecting plate 6 and a fastening bolt 11, wherein the connecting rod 2 is arranged on the connecting seat 1, a notch is formed in the middle of the top of the connecting seat 1, first threaded holes 3 which penetrate through the connecting rod are formed in two sides of the notch and used for being matched with the bolt to fix the connecting rod 2, the connecting sleeve 4 is sleeved at the end part, away from the connecting seat 1, of the connecting rod 2, a plurality of second threaded holes 5 which penetrate through the connecting sleeve are uniformly distributed in the connecting sleeve 4 along the circumferential direction and used for being matched with the bolt to fix the connecting sleeve 4, one end of the connecting plate 6 is attached to the end part of the connecting sleeve, and the fastening bolt 11 penetrates through the connecting plate 6 and is in threaded connection with the threaded holes formed in the end part of the connecting rod 2 and used for fixing the connecting plate 6; a through hole is formed in the end part, far away from the connecting rod 2, of the connecting plate 6, a plurality of third threaded holes 9 are uniformly distributed in the circumferential direction on the outer side of the through hole and used for fixing the metering pinch roller, connecting holes are symmetrically formed in the upper side and the lower side of one end, provided with the through hole, of the connecting plate 6, one end of the spring 12 is buckled on a bolt in threaded connection with the second threaded hole 5, and the other end of the spring is buckled on a bolt in threaded connection with the connecting holes; the linear distance between the bolt in threaded connection with the second threaded hole and the bolt in threaded connection with the connecting hole is equal to the length of the spring, the spring 12 and the connecting plate 6 are controlled to form a certain included angle beta along with the length adjustment of the connecting plate 6 in a natural state when the spring is not under tension or pressure, and when the included angle alpha of the expansion of the connecting plate is 60 degrees, the pressure F of a contact point of a surface where the pressing wheel is parallel to the connecting plate 6 is guaranteed to be 2.30 KN.
The connection plate spread angle alpha is an angle which rotates along the circumference of the connection rod 2 from the position of the connection plate 6 when the spring 12 is not under tension or pressure, and is spread under a certain force of the connection plate, and the relation between the included angle beta formed by the spring 12 and the connection plate 6 and the length of the connection plate 6 is
F is the pressure of a contact point of the pinch roller and the horizontal plane, L is the linear distance from the intersection center point of the connecting plate 6 and the connecting rod 2 to the center point of the through hole 8 of the connecting plate, the lengthening is preferably 165mm, n is the linear distance from the point, perpendicular to L, of a bolt fastened by a spring at the pinch roller end to the center point of the through hole 8, n is preferably 27mm, k is the spring elasticity coefficient of 0.70KN/mm, L is the length of the spring after being stressed and is 155.0mm, and L is the linear distance from the point of the spring at the pinch roller end to the center point of the through hole 8 0 The original length of the spring is 148.3mm, and the included angle beta formed by the spring 12 and the connecting plate 6 is 12 degrees.
The pinch roller comprises a gear and a rubber coating wheel.
Claims (8)
1. The utility model provides a high accuracy roller type metering device, its characterized in that includes tensioning pinch roller, photoelectric isolation device, single chip microcomputer system and photoelectric isolation device, the tensioning pinch roller includes spring bracket and measurement pinch roller, the measurement pinch roller includes measurement transmission device and pinch roller, and measurement transmission device, photoelectric isolation device and single chip microcomputer system be electric connection in proper order, and every rotation certain angle of pinch roller, measurement transmission device form a length signal of telecommunication, through photoelectric isolation device, and the retransmission records pinch roller pivoted length to single chip microcomputer system.
2. A high-precision roller type metering device according to claim 1, wherein the spring support comprises a connecting seat (1), a connecting rod (2), a connecting sleeve (4), a connecting plate (6) and a fastening bolt (11), the connecting rod (2) is arranged on the connecting seat (1), a notch is formed in the middle of the top of the connecting seat (1), first threaded holes (3) which are penetrated through are formed in two sides of the notch and used for matching with the bolt to fix the connecting rod (2), the connecting sleeve (4) is sleeved on the end part, far away from the connecting seat (1), of the connecting rod (2), a plurality of second threaded holes (5) which are penetrated through are uniformly distributed in the circumferential direction on the connecting sleeve (4) and used for matching with the bolt to fix the connecting sleeve (4), one end of the connecting plate (6) is attached to the end part of the connecting sleeve, the fastening bolt (11) penetrates through the connecting plate (6) and is in threaded connection with threaded holes formed in the end part of the connecting rod (2), for fixing the connecting plate (6); the end part of the connecting plate (6) far away from the connecting rod (2) is provided with a through hole (8), the outer side of the through hole is evenly provided with a plurality of third threaded holes (9) along the circumferential direction, used for fixing the metering pinch roller, connecting holes are symmetrically arranged at the upper side and the lower side of one end of the connecting plate (6) provided with a through hole, one end of the spring (12) is buckled on a bolt in threaded connection with the second threaded hole (5), the other end is buckled on a bolt in threaded connection with the connecting holes, it is characterized in that the linear distance between the bolt screwed with the second threaded hole and the bolt screwed with the connecting hole is equal to the length of the spring, in a natural state when the spring is not under tension or pressure, the spring (12) and the connecting plate (6) are controlled to form a certain included angle beta along with the length adjustment of the connecting plate (6), when the unfolding included angle alpha of the connecting plate is 55-65 degrees, the pressure F of the contact point of the surface of the pressing wheel parallel to the connecting plate (6) is ensured to be 2.25-2.35 KN.
3. A high precision roller gauge according to claim 2, characterized in that the web spread angle α is the angle of rotation around the connecting rod (2) from the position where the spring (12) is not under tension or pressure on the connecting plate (6), the spread angle being a certain force on the connecting plate, the angle β formed by the spring (12) and the connecting plate (6) being related to the length of the connecting plate (6)
Wherein F is the pressure of the contact point of the pinch roller and the horizontal plane, L is the linear distance from the intersection center point of the connecting plate (6) and the connecting rod (2) to the center point of the through hole (8) of the connecting plate, n is the linear distance from the point of the bolt fastened by the spring at the pinch roller end, which is vertical to L, to the center point of the through hole (8), k is the spring elasticity coefficient, the range is 0.70-0.75KN/mm, L is the length of the spring after being stressed, and L is the length of the spring after being stressed 0 Is the original length of the spring.
4. A high precision roller gauge according to claim 1, wherein said pressure wheel comprises a gear, a rubber covered wheel.
5. A high accuracy roller gauge according to claim 1, wherein the electronic length signal is indicative of the length of the roller and the angle of rotation of the roller required to produce the electronic length signal, and the time and/or time interval of the acceptable product is set, and wherein the object is not measured when the time signal received by the electronic length signal is not within the time and/or time interval of the acceptable product.
6. A high accuracy roller gauge according to claim 5, wherein the gauge conveyor further comprises object detection means, the object time is the time when an object on the conveyor belt at the same linear velocity as the pinch rollers passes the object detection means, and the interval time is the time from the previous object just completely passing the object detection means to the next object just reaching the object detection means.
7. A high precision roller type metering device as claimed in claim 1, wherein the photoelectric isolation device enables the signal input circuit to bear 4KV EFT group pulse interference, wherein the resistor R5 is connected in parallel with the optical coupler OP1 and in series with the resistor R3 and the diode D4 to form an input loop, the resistor R7 and the capacitor C1 are connected in parallel and in series between the resistor R9 and the optical coupler OP1 to form an output loop, and the input loop and the output loop do not belong to the same power supply.
8. A high accuracy roller type metering device according to claim 7, characterized in that the resistance R5 is 4.65-4.75K Ω, the diode D4 is 1N4148, the resistance R3 is 2.15-2.25K Ω, the resistance R7 is 0.95-1.05K Ω, the resistance R9 is 4.65-4.75K Ω, and the capacitance C1 is 9-11 nf.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210768150.1A CN115077337B (en) | 2022-07-01 | 2022-07-01 | High-precision roller type metering device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210768150.1A CN115077337B (en) | 2022-07-01 | 2022-07-01 | High-precision roller type metering device |
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| CN115077337A true CN115077337A (en) | 2022-09-20 |
| CN115077337B CN115077337B (en) | 2023-06-16 |
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