CN113447505B - Pneumatic surface density detection device - Google Patents
Pneumatic surface density detection device Download PDFInfo
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- CN113447505B CN113447505B CN202110524248.8A CN202110524248A CN113447505B CN 113447505 B CN113447505 B CN 113447505B CN 202110524248 A CN202110524248 A CN 202110524248A CN 113447505 B CN113447505 B CN 113447505B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/03—Investigating materials by wave or particle radiation by transmission
- G01N2223/04—Investigating materials by wave or particle radiation by transmission and measuring absorption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/30—Accessories, mechanical or electrical features
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Abstract
The invention discloses a pneumatic surface density detection device, which comprises a detection mechanism, an indexing transmission mechanism and a pneumatic driving mechanism, wherein the detection mechanism comprises a detection part and a turntable, the turntable is rotatably arranged on the detection part, the turntable is provided with a plurality of mounting positions, and the mounting positions are used for placing standard sheets; the pneumatic driving mechanism is connected with the rotary table through the indexing transmission mechanism, and the pneumatic driving mechanism drives the rotary table to rotate intermittently through the indexing transmission mechanism. Because the pneumatic driving mechanism is used as a driving source, the pneumatic structure is not subjected to electromagnetic interference of a high-voltage power supply, and has higher output precision; and the pneumatic driving mechanism drives the turntable to rotate through the indexing transmission mechanism, and the transmission output end is driven to rotate by the same preset angle when the transmission input end rotates for one circle in the indexing transmission mechanism, so that the pneumatic driving mechanism can drive the turntable to rotate by the same angle at each time, and further, each measuring point of the standard sheet can be ensured to be on the same point, and the detection accuracy is ensured.
Description
Technical Field
The invention relates to the technical field of lithium battery detection, in particular to a pneumatic surface density detection device.
Background
The surface density of the pole piece of the lithium battery is closely related to the performance of the lithium battery, and in the production process of the lithium battery, the surface density of the pole piece needs to be detected to judge the state of the pole piece; therefore, the reliability of the extremely-large-area density detection equipment is extremely important. The measurement principle is that a certain amount of rays penetrate through the pole piece, and the surface density of the pole piece is judged according to the loss amount of the rays after penetrating through the pole piece. The excitation radiation requires a high voltage power supply, which risks electromagnetic interference with surrounding electrical components. In the calibration and verification or verification process of the pole piece surface density detection equipment, different standard pieces need to be measured, or the same standard piece needs to be measured at the side repeatedly, and only one point on the standard piece is measured each time, but the surface density of different points on the same standard piece may have a certain deviation, so that in the automatic measurement, each measurement point of each standard piece needs to be ensured to be the same point.
However, in the surface density detection device in the prior art, the rotation angle of the turntable is controlled by the motor, the motor is subjected to electromagnetic interference of a high-voltage power supply, the driving precision is difficult to guarantee, and errors of the motor and long-time accumulated errors cause different measurement points of each standard sheet every time, so that the detection accuracy is influenced.
Disclosure of Invention
The invention provides a pneumatic surface density detection device, which is used for solving the problem that each measurement point of a standard sheet is not at the same point to influence the detection accuracy due to electromagnetic interference of a high-voltage power supply.
An embodiment provides a pneumatic surface density detection device, including detection mechanism, graduation drive mechanism and pneumatic drive mechanism:
the detection mechanism comprises a detection part and a rotary table, the rotary table is rotatably arranged on the detection part, a plurality of mounting positions are arranged on the rotary table, and the mounting positions are used for placing standard sheets;
the pneumatic driving mechanism is connected with the rotary table through the indexing transmission mechanism, and the pneumatic driving mechanism drives the rotary table to rotate intermittently through the indexing transmission mechanism.
In one embodiment, the indexing drive is a one-way indexing drive.
In one embodiment, the indexing transmission mechanism comprises a first one-way transmission assembly, an indexing assembly and a second one-way transmission assembly which are sequentially connected, the first one-way transmission assembly is connected with the pneumatic driving mechanism, and the second one-way transmission assembly is connected with the rotary table.
In one embodiment, the first one-way transmission assembly comprises a first gear, a first rotating shaft and a first one-way bearing, the first gear is mounted on the first rotating shaft through the first one-way bearing, and the first gear is connected with the pneumatic driving mechanism; the second one-way transmission assembly comprises a second gear, a second rotating shaft and a second one-way bearing, the second gear and the one-way bearing are installed on the second rotating shaft, and the second gear is connected with the rotary disc.
In one embodiment, a first shaft shoulder and a second shaft shoulder are arranged on the first rotating shaft, the shaft diameter of the second shaft shoulder is larger than that of the first shaft shoulder, the first one-way bearing is mounted on the first shaft shoulder, the first gear is mounted on the first one-way bearing, and the second shaft shoulder is used for limiting the first one-way bearing.
In one embodiment, the first unidirectional transmission assembly further comprises a first common bearing and a first cover plate, wherein the first common bearing is mounted at the end part of the first rotating shaft; the first cover plate is of an annular structure and is arranged on an axial face, far away from the second shaft shoulder, of the first gear, and the first cover plate is used for sealing the first one-way bearing in the first gear.
In one embodiment, be equipped with the third shoulder and the fourth shoulder that connect gradually in the second pivot, the one-way bearing of second is installed on the third shoulder, the diameter of axle of fourth shoulder is greater than the diameter of axle of third shoulder, the fourth shoulder is used for spacingly the one-way bearing of second.
In one embodiment, a fifth shoulder is further arranged on the second rotating shaft, the third shoulder, the fourth shoulder and the fifth shoulder are sequentially connected, and the diameter of the fourth shoulder is larger than that of the fifth shoulder; the one-way transmission subassembly of second still includes ordinary bearing of second and clamp, the ordinary bearing of second is installed on the third shaft shoulder, the clamp is installed the second pivot is kept away from the tip of fifth shaft shoulder, the clamp with the third shaft shoulder will the second gear is spacing in the second pivot.
In one embodiment, the indexing assembly includes a driving wheel and a driven wheel, the driving wheel is mounted on the first rotating shaft, the driven wheel is mounted on the second rotating shaft, the driving wheel is connected with the driven wheel, and the driving wheel drives the driven wheel to rotate by the same preset angle every time the driving wheel rotates by one turn.
In one embodiment, the pneumatic driving mechanism comprises an air cylinder and a rack, the air cylinder is connected with the rack, the air cylinder is used for driving the rack to do linear reciprocating movement, and the rack is connected with the first gear.
In one embodiment, the cylinder is a rodless cylinder, the cylinder includes a cylinder shaft and a sliding portion on the cylinder shaft, and the rack is mounted on the sliding portion.
In one embodiment, the pneumatic driving mechanism further includes a guide rod, the guide rod is parallel to the cylinder shaft, and the sliding portion is slidably connected to the guide rod.
In one embodiment, the sliding part is connected to the cylinder shaft by a linear bearing.
In one embodiment, the indexing transmission mechanism further comprises a first support and a second support, the first support is mounted on the detection part, the first one-way transmission assembly is mounted on the first support, and the second one-way transmission assembly and the pneumatic driving mechanism are mounted on the second support.
In one embodiment, the first bracket is provided with a mounting hole, the second one-way transmission assembly is mounted in the mounting hole of the first bracket, and the second gear is exposed out of the mounting hole; the second one-way transmission assembly further comprises a second cover plate, the second cover plate is provided with a through hole and is arranged on the first support, and the second cover plate seals the second one-way bearing in the mounting hole.
According to the pneumatic surface density detection device of the embodiment, the pneumatic driving mechanism is used as the driving source, so that the pneumatic structure is not subjected to electromagnetic interference of a high-voltage power supply, and the output precision is higher; and the pneumatic driving mechanism drives the turntable to rotate through the indexing transmission mechanism, and the transmission output end is driven to rotate by the same preset angle when the transmission input end rotates for one circle in the indexing transmission mechanism, so that the pneumatic driving mechanism can drive the turntable to rotate by the same angle at each time, and further, each measuring point of the standard sheet can be ensured to be on the same point, and the detection accuracy is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a pneumatic areal density detection apparatus according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a pneumatic areal density detection apparatus according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an exploded view of a first transmission in an embodiment of the present application;
FIG. 4 is an exploded view of a second actuator according to an embodiment of the present application;
FIG. 5 is a schematic structural view of a first bracket according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a first bracket in an embodiment of the present application.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
This embodiment provides a pneumatic surface density detection device, and this pneumatic surface density detection device is used for adopting the penetrating mode of ray to detect lithium-ion battery pole piece's surface density, and this pneumatic surface density detection device has the advantage that stability is good, the detection accuracy is high.
Referring to fig. 1 and fig. 2, the pneumatic areal density detection apparatus of the present embodiment mainly includes a detection mechanism 1, an indexing transmission mechanism 2, and a pneumatic driving mechanism 3. The pneumatic driving mechanism 3 is connected with the detection mechanism 1 through the indexing transmission mechanism 2 and is used for driving the standard sheet (pole piece) to rotate.
In this embodiment, a first bracket 41 and a second bracket 42 are further provided, the first bracket 41 is mounted on the detection mechanism 1, and the second bracket 42 may be mounted on the detection mechanism 1 or may be mounted on other devices. The indexing mechanism 2 is partially mounted on the first support 41, partially mounted on the second support 42, and the pneumatic drive mechanism 3 is mounted on the second support 42. The first bracket 41 and the second bracket 42 play a role of supporting and fixing. The first bracket 41 and the second bracket 42 may also be of an integral structure.
The detection mechanism 1 comprises a detection part 11 and a turntable 12, wherein the detection part 11 comprises a shell and a ray assembly positioned in the shell, and the ray assembly is used for emitting rays onto the standard sheet and detecting the specific position of the standard sheet. The rotating disc 12 is rotatably installed outside the detecting part 11 through a rotating shaft, 5 installation positions 121 which are uniformly distributed are arranged on the rotating disc 12, and the installation positions 121 are used for placing standard sheets. There is also the locating hole around installation position 121 for the standard piece of location, improves the accuracy and the efficiency of automatic placing.
The central angle between adjacent mounting locations 121 is 72 °, and when one mounting location 12 of the carousels 12 is in an operative position aligned with a radiation assembly, rotation of the carousel 12 by 72 ° can rotate the next mounting location 121 to the operative position aligned with the radiation assembly.
In other embodiments, the turntable 12 may also be provided with other numbers of mounting positions 121, for example, 6 mounting positions 121 are provided on the turntable 12, the central angle between adjacent mounting positions 121 is 60 °, and the next mounting position 121 can be rotated to the working position by rotating the turntable 12 by 60 °.
In this embodiment, the indexing transmission mechanism 2 is a mechanism for continuous input and intermittent output, the indexing transmission mechanism 2 includes a first unidirectional transmission component 21, an indexing component 23 and a second unidirectional transmission component 22 which are connected in sequence, the first unidirectional transmission component 21 is connected with the pneumatic driving mechanism 3, the second unidirectional transmission component 22 is connected with the turntable 12, and the pneumatic driving mechanism 3 drives the turntable 12 to rotate intermittently through the first unidirectional transmission component 21, the indexing component 23 and the second unidirectional transmission component 22 in sequence.
In other embodiments, if only two symmetrical mounting locations 12 are provided in the rotating disc 12, the first unidirectional transmission assembly 21 and the second unidirectional transmission assembly 22 may also be bidirectional transmission assemblies, and the two mounting locations 12 can be switched alternately.
Referring to fig. 3, in the present embodiment, the first unidirectional transmission assembly 21 mainly includes a first gear 211, a first rotating shaft 212, and a first unidirectional bearing 213. The first rotating shaft 212 is parallel to a rotating shaft connected to the rotating disk 12, and the first gear 211 is installed at a lower end of the first rotating shaft 212 through a first one-way bearing 213.
Referring to fig. 4, the second unidirectional transmission assembly 21 mainly includes a second gear 221, a second rotating shaft 222 and a second unidirectional bearing 223, and the second gear 221 and the second unidirectional bearing 223 are respectively installed at the upper end of the second rotating shaft 222.
Referring to fig. 3 and 4, the indexing assembly 23 includes a driving wheel 221 and a driven wheel 222, wherein the first rotating shaft 212 is located at a lower end of the second rotating shaft 222, and the first rotating shaft 212 is parallel to the second rotating shaft 222. The driving wheel 221 is installed at the upper end of the first rotating shaft 212, the driven wheel 222 is installed at the lower end of the second rotating shaft 222, the driving wheel 221 and the driven wheel 222 are connected in an indexing manner, and the driving wheel 231 drives the driven wheel 232 to rotate by the same preset angle every time the driving wheel 231 rotates for one circle, so that intermittent transmission is realized. That is, the first rotating shaft 212 and the second rotating shaft 222 are connected in an indexing way through the driving wheel 221 and the driven wheel 222.
Referring to fig. 3, specifically, the first rotating shaft 212 is a four-segment structure, the upper end and the lower end of the first rotating shaft 212 are respectively a first shaft body 2121, the middle portion of the first rotating shaft 212 is provided with a first shaft shoulder 2122 and a second shaft shoulder 2123, the axial length of the first shaft shoulder 2122 is greater than that of the second shaft shoulder 2123, and the shaft diameter of the second shaft shoulder 2123 is greater than that of the first shaft shoulder 2122. The first shoulder 2122 mainly plays a role in mounting, the first shoulder 2122 is provided with a key slot, and the second shoulder 2123 mainly plays a role in separation and fixation. The lower end of the first rotating shaft 212 is rotatably mounted on the second bracket 42 by a first common bearing 214 (bearing capable of rotating in two directions), and the second shoulder 2123 abuts against the second bracket 42. The first gear 211 is mounted on the first shoulder 2122 through the first one-way bearing 213, the first gear 211 is keyed to the first one-way bearing 213, and the first one-way bearing 213 is keyed to the first shoulder 2122.
Under the action of the first one-way bearing 213, the first one-way bearing 213 can only rotate clockwise for example; when the first gear 211 rotates clockwise, the first one-way bearing 213 can rotate, and thus cannot drive the first rotating shaft 212 to rotate; when the first gear 211 rotates counterclockwise, the first one-way bearing 213 cannot rotate, and drives the first gear 211 to rotate together.
A first cover plate 215 is covered on the upper end surface of the first gear 211, the first cover plate 215 is of an annular structure, and the first cover plate 215 is installed on the first gear 211 through screws. The first cover plate 215 is used to cover the first one-way bearing 213 in the first gear 211, so as to prevent foreign matters from entering the first one-way bearing 213, and to prevent dust.
The driving wheel 231 is fixedly installed on the first shaft body 2121 at the upper end of the first rotating shaft 212, the shaft sleeve 216 is installed between the driving wheel 231 and the first one-way bearing 213, the shaft sleeve 216 separates the driving wheel 231 from the first one-way bearing 213 to avoid friction between the driving wheel 231 and the first one-way bearing 213, and the installation height of the driving wheel 231 can be adjusted by selecting the shaft sleeves 216 with different lengths to adapt to connection with the second one-way transmission assembly 22.
The upper end surface (axial surface) of the driving wheel 231 is provided with a convex portion 2311, the convex portion 2311 is located at the edge position of the driving wheel 231, the convex portion 2311 is of a cylindrical structure, and preferentially, the convex portion 2311 is a rotatable cylindrical roller. The middle of the upper end surface of the driving wheel 231 is also provided with a guide wheel 2312 with an arc-shaped notch.
Referring to fig. 4, 5 evenly distributed grooves 2321 are disposed on the circumferential surface of the driven wheel 232, 5 evenly distributed guiding arc-shaped surfaces 2322 are further disposed on the circumferential surface of the driven wheel 232, and the grooves 2321 and the guiding arc-shaped surfaces 2322 are alternately disposed. Wherein, the recess 2321 is used to connect with the protrusion 2311 of the driving wheel 231, and the driving wheel 231 is driven to rotate by the protrusion 2311 snapping into the recess 2321. The guiding arc-shaped surface 2322 is matched with the guiding wheel 2312 of the driving wheel 231, and the guiding arc-shaped surface 2322 plays a role in limiting and guiding, so that the rotating stability of the driving wheel 231 is improved. The 5 grooves 2321 are arranged such that each rotation of the driven wheel 232 causes the driven wheel 232 to rotate 72 °.
The second rotating shaft 222 is of a five-segment structure, the upper end and the lower end of the second rotating shaft 222 are respectively provided with a second shaft body 2221, the middle part of the second rotating shaft 222 is provided with a third shaft shoulder 2222, a fourth shaft shoulder 2223 and a fifth shaft shoulder 2224 from top to bottom, and the shaft diameter of the fourth shaft shoulder 2223 is larger than the shaft diameters of the third shaft shoulder 2222 and the fifth shaft shoulder 2224.
The driven wheel 232 is connected to the second shaft body 2221 at the lower end of the second rotating shaft 222 through a key, a retaining ring 224 is further mounted at the end of the second shaft body 2221 at the lower end of the second rotating shaft 222, and the retaining ring 224 and the fifth shoulder 2224 fix the driven wheel 232 on the second shaft body 2221 in a limiting manner. The driven wheel 232 is fixedly connected with the second rotating shaft 222, and the driven wheel 232 can drive the second rotating shaft 222 to rotate together.
A second plain bearing 225 (a bearing capable of rotating in two directions) is mounted on the fifth shaft shoulder 2224, a second one-way bearing 223 is mounted on the third shaft shoulder 2222, the second one-way bearing 223 is connected with the third shaft shoulder 2222 through a key, and the rotating directions of the second one-way bearing 223 and the first one-way bearing 213 are the same. The second gear 221 is mounted on the second shaft 2221 at the upper end of the second shaft 222 through a key, and the second gear 221 rotates together with the second shaft 222. A clamp 226 is further mounted on the end of the second shaft 2221 at the upper end of the second rotating shaft 222, and the clamp 226 and the third shoulder 2222 lock the second gear 221 on the second shaft 2221.
Referring to fig. 5 and 6, the first bracket 41 includes a plate portion 411 and a cylindrical portion 412, the plate portion 411 and the cylindrical portion 412 are integrated, the plate portion 411 is mounted on an outer sidewall of the detecting member 11, and the cylindrical portion 412 has a mounting hole 413. The second one-way transmission assembly 22 is mounted in the mounting hole 413 of the cylindrical portion 412, and the driven wheel 232 and the second gear 221 are exposed at both ends of the mounting hole 413, respectively. The second unidirectional transmission assembly 22 is installed in the installation hole 413 through a second ordinary bearing 225 and a second unidirectional bearing 223, and the lower end of the installation hole 413 is narrowed, so that the lower end of the installation hole 413 has a smaller through hole 414, and a mounting table is formed to limit the second ordinary bearing 225. The second cover plate 227 is mounted at the upper end of the mounting hole 413, a through hole is formed in the middle of the second cover plate 227, the second rotating shaft 222 penetrates through the through hole of the second cover plate 227, the second cover plate 227 is fixed on the cylindrical portion 412 through a screw, and the second cover plate 227 plays a role in limiting the second one-way bearing 223 and also plays a role in sealing and dust prevention.
In this embodiment, the second bracket 42 includes a cross member and two longitudinal members, the two longitudinal members are respectively installed at both ends of the cross member, a space region for accommodating the pneumatic driving mechanism 3 is provided between the two longitudinal members, and the first rotating shaft 212 is connected to the cross member of the second bracket 42.
The pneumatic drive mechanism 3 includes a cylinder 31 and a rack 32. The cylinder 31 is a rodless cylinder, the cylinder 31 includes a cylinder shaft 311 and a sliding part 312, the sliding part 312 is a pneumatic output end of the pneumatic driving mechanism 3, two ends of the cylinder shaft 311 are respectively fixed on the longitudinal beams of the second bracket 42, and the sliding part 312 is mounted on the cylinder shaft 311 in a reciprocating manner. The rack 32 is fixedly mounted on the sliding part 312 by a screw, the rack 32 is parallel to the cylinder shaft 311, and the rack 32 is engaged with the first gear 211, and the rack 32 is used for driving the first gear 211 to rotate.
A guide rod 33 is further installed between the two longitudinal beams of the second bracket 42, the guide rod 33 is disposed parallel to the cylinder shaft 311, and the sliding portion 312 is connected to the guide rod 33 through a linear bearing 34. Guide rod 33 plays a role of guiding, so that sliding portion 312 can smoothly reciprocate on cylinder shaft 311, and the problem of poor meshing between rack 32 and first gear 211 can be avoided. The linear bearing 34 can reduce friction between the sliding portion 312 and the guide rod 33, and is more stable.
The driving principle of the pneumatic areal density detection device of the present embodiment is as follows:
the cylinder 31 drives the rack 32 to move linearly, the rack 32 drives the first gear 211 to rotate, the first gear 211 drives the driving wheel 231 to rotate through the first one-way bearing 213 and the first rotating shaft 212, the protrusion 2311 is clamped in the groove 2321 of the driven wheel 232 to drive the driven wheel 232 to rotate in the rotating process of the driving wheel 231, and the driven wheel 232 is driven to rotate by 72 degrees in each rotation of the driving wheel 231;
after the driven wheel 232 is driven to rotate, the second gear 221 is driven to rotate through the second rotating shaft 222 and the second one-way bearing 223, and the second gear 221 further drives the rotating disc 12 to rotate by a preset angle. Wherein, the specific value of the rotation angle of the turntable can be realized by setting the transmission ratio between the driven wheel 232 and the turntable 12;
after the driving turntable 12 rotates once, the air cylinder 31 drives the rack 32 to linearly move in the opposite direction, the rack 32 drives the first gear 211 to rotate, and under the action of the first one-way bearing 213, the rack 32 cannot drive the first rotating shaft 212 to rotate, so that the driving wheel 231 does not rotate; even if the driving wheel 231 slightly rotates, the second one-way bearing 223 is arranged in the second one-way transmission assembly 22, so that the second gear 221 can be ensured not to rotate, and the accuracy of the rotation of the rotary table 12 is further maintained.
In this embodiment, the pneumatic driving mechanism 3 is driven by the cylinder 31, so that electromagnetic interference generated by a high-voltage power supply in the detection process can be avoided, and the output accuracy of the pneumatic driving mechanism 3 is ensured; the arrangement of the rodless cylinder can save the space occupied by the pneumatic driving mechanism 3 and realize the miniaturization of the device; moreover, the indexing assembly 23 realizes intermittent movement of the rotary table 12, and can ensure that the rotary table 12 can keep the same rotation angle every time when working for a long time through structural limitation; and first one-way transmission assembly 21 and second one-way transmission assembly 22 are the one-way transmission structure, can avoid cylinder 31 return stroke in-process to drive carousel 12 to rotate, have improved carousel 12 pivoted accuracy.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (12)
1. The utility model provides a pneumatic surface density detection device which characterized in that, includes detection mechanism, graduation drive mechanism and pneumatic actuating mechanism:
the detection mechanism comprises a detection part and a rotary table, the rotary table is rotatably arranged on the detection part, a plurality of mounting positions are arranged on the rotary table, and the mounting positions are used for placing standard sheets;
the pneumatic driving mechanism is connected with the rotary table through the indexing transmission mechanism, and drives the rotary table to rotate intermittently through the indexing transmission mechanism;
the indexing transmission mechanism is a one-way indexing transmission mechanism;
the indexing transmission mechanism comprises a first one-way transmission assembly, an indexing assembly and a second one-way transmission assembly which are sequentially connected, the first one-way transmission assembly is connected with the pneumatic driving mechanism, and the second one-way transmission assembly is connected with the rotary table;
the first one-way transmission assembly comprises a first gear, a first rotating shaft and a first one-way bearing, the first gear is mounted on the first rotating shaft through the first one-way bearing, and the first gear is connected with the pneumatic driving mechanism; the second one-way transmission assembly comprises a second gear, a second rotating shaft and a second one-way bearing, the second gear and the one-way bearing are installed on the second rotating shaft, and the second gear is connected with the rotary disc.
2. The pneumatic areal density detection device of claim 1, wherein a first shoulder and a second shoulder are provided on the first shaft, a diameter of the second shoulder is greater than a diameter of the first shoulder, the first one-way bearing is mounted on the first shoulder, the first gear is mounted on the first one-way bearing, and the second shoulder is used to limit the first one-way bearing.
3. The pneumatic areal density detection device of claim 2, wherein the first unidirectional actuator assembly further comprises a first plain bearing and a first cover plate, the first plain bearing being mounted at an end of the first shaft; the first cover plate is of an annular structure and is arranged on an axial face, far away from the second shaft shoulder, of the first gear, and the first cover plate is used for sealing the first one-way bearing in the first gear.
4. The pneumatic areal density detection device of claim 1, wherein a third shoulder and a fourth shoulder are provided on the second shaft, the second unidirectional bearing is mounted on the third shoulder, a diameter of the fourth shoulder is greater than a diameter of the third shoulder, and the fourth shoulder is used to limit the second unidirectional bearing.
5. The aerodynamic areal density detection device of claim 4, wherein a fifth shoulder is further provided on the second shaft, the third shoulder, the fourth shoulder and the fifth shoulder are connected in sequence, and the diameter of the fourth shoulder is greater than the diameter of the fifth shoulder; the one-way transmission subassembly of second still includes ordinary bearing of second and clamp, the ordinary bearing of second is installed on the third shaft shoulder, the clamp is installed the second pivot is kept away from the tip of fifth shaft shoulder, the clamp with the third shaft shoulder will the second gear is spacing in the second pivot.
6. The pneumatic areal density detection device of claim 1, wherein the indexing assembly includes a drive wheel mounted on the first shaft and a driven wheel mounted on the second shaft, the drive wheel being coupled to the driven wheel, the drive wheel driving the driven wheel to rotate the same predetermined angle per revolution of the drive wheel.
7. The pneumatic areal density detection device of claim 1, wherein the pneumatic drive mechanism comprises a cylinder and a rack, the cylinder is connected with the rack, the cylinder is used for driving the rack to do linear reciprocating movement, and the rack is connected with the first gear.
8. The pneumatic areal density detection device of claim 7, wherein the cylinder is a rodless cylinder, the cylinder including a cylinder shaft and a slide on the cylinder shaft, the rack being mounted on the slide.
9. The pneumatic areal density detection device of claim 8, wherein the pneumatic drive mechanism further comprises a guide rod disposed parallel to the cylinder axis, the slide portion being slidably coupled to the guide rod.
10. The pneumatic areal density detection device of claim 9, wherein the slide is connected to the cylinder shaft by a linear bearing.
11. The pneumatic areal density detection device of claim 1, wherein the indexing drive mechanism further comprises a first support and a second support, the first support being mounted on the detection member, the first one-way drive assembly being mounted on the first support, the second one-way drive assembly and the pneumatic drive mechanism being mounted on the second support.
12. The pneumatic areal density detection device of claim 11, wherein the first bracket has a mounting aperture, the second one-way clutch assembly is mounted in the mounting aperture of the first bracket, and the second gear is exposed from the mounting aperture; the second one-way transmission assembly further comprises a second cover plate, the second cover plate is provided with a through hole and is arranged on the first support, and the second cover plate seals the second one-way bearing in the mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110524248.8A CN113447505B (en) | 2021-05-13 | 2021-05-13 | Pneumatic surface density detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110524248.8A CN113447505B (en) | 2021-05-13 | 2021-05-13 | Pneumatic surface density detection device |
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| CN113447505A CN113447505A (en) | 2021-09-28 |
| CN113447505B true CN113447505B (en) | 2022-04-08 |
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