CN210334748U - Laser code-spraying optical automatic focusing mechanism - Google Patents
Laser code-spraying optical automatic focusing mechanism Download PDFInfo
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- CN210334748U CN210334748U CN201921126726.4U CN201921126726U CN210334748U CN 210334748 U CN210334748 U CN 210334748U CN 201921126726 U CN201921126726 U CN 201921126726U CN 210334748 U CN210334748 U CN 210334748U
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Abstract
The utility model discloses a laser spouts a yard optics automatic focusing mechanism, the utility model relates to a laser spouts a yard field, concretely relates to laser spouts a yard optics automatic focusing mechanism. The utility model discloses a benefit: the utility model discloses a beam expanding lens, step motor, the mating reaction of focusing gear wheel, wherein the outside setting of the focusing section of thick bamboo of beam expanding lens is the ring gear, step motor drive focusing gear wheel is rotatory, the focusing gear wheel is connected with the ring gear meshing, focusing gear drive ring gear revolve rotatory, thereby realize the focusing with the integrative focusing section of thick bamboo synchronous revolution of ring gear, the transmission mode has been simplified, moreover, the steam generator is simple in structure, the spare part of use is less, thereby reduced in the transmission many times because of there is the error that the difference produced in the part, the driven precision has been improved, the precision of focusing has further been improved, and reduction in production cost, simplify the assembly.
Description
Technical Field
The utility model relates to a laser spouts the sign indicating number field, concretely relates to laser spouts sign indicating number optics automatic focusing mechanism.
Background
The device disclosed in reference 1 (patent name: a geared beam expander automatic fine focusing mechanism, application No. 201110191938.2) still has some problems in use: 1. the device adopts step motor drive pinion rotatory, the pinion drives the gear wheel through being connected with gear wheel meshing and rotates, the gear wheel drives the rotatory fastening sleeve of beam expanding lens rotatory and rotates, the rotatory fastening sleeve of beam expanding lens drives beam expanding lens focusing part rotatory, thereby drive beam expanding lens focusing part back-and-forth movement, realize the effect of focusing, this technological means needs step motor, the gear wheel, the pinion, the rotatory fastening sleeve of beam expanding lens, beam expanding lens focusing part's mating reaction, because the spare part that this technological means needs is many, thereby lead to the manufacturing cost to increase, and the complexity of assembly has also been increased, in addition, even be the spare part of same batch at the production process also can have slight difference, consequently under the cooperation of more spare part, the device's accuracy also can receive certain influence. 2. The device drives the pinion to rotate through the stepping motor, the pinion drives the bull gear to rotate, so that one side of the bull gear is stressed, but the device is not provided with any auxiliary component, so that the stress of the bull gear is not uniform, and after the device is used for a long time, the bull gear can be damaged and the accuracy of the device can be damaged; in addition, in the focusing process of the device, as the large gear moves left and right, incomplete meshing of the large gear and the small gear can be caused, although the description in the comparison document 1 states that "the full gear is not necessarily required to be completely meshed to move due to gear meshing", when the large gear and the small gear are not completely meshed, the contact area of the large gear and the small gear is reduced, so that the pressure applied to the contact surface of the large gear and the small gear is increased, the large gear and the small gear can be damaged after long-term use, the transmission precision can be reduced due to incomplete meshing of the large gear and the small gear, and finally the focusing precision is. 3. The device is provided with the trigger piece and the photoelectric interrupter to realize confirming the initial position of focusing under outage and other special circumstances, but the installation of the trigger piece of the device is very loaded down with trivial details, needs to cooperate rotatory fastening sleeve of beam expanding lens, sleeve fastening clamping ring, and the spare part that this technical means needs is many, thereby leads to manufacturing cost to increase, and also increased the complexity of assembly.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a laser spouts a yard optics automatic focusing mechanism just in order to solve above-mentioned problem.
A laser code-spraying optical automatic focusing mechanism comprises an automatic focusing mechanism and a beam expander;
the automatic focusing mechanism comprises a focusing table plate, a stepping motor, a focusing large gear, a carrier roller assembly, a proximity switch bracket and an inductive proximity switch, wherein a containing hole for containing a beam expanding lens is formed in the middle of the focusing table plate, a semicircular matching groove is formed in the edge of the focusing table plate, waist-shaped holes are formed in two sides of the matching groove respectively, two screw holes are formed in the focusing table plate, the carrier roller assembly is installed on the screw holes, the carrier roller assembly comprises a screw rod and a bearing, the screw rod is connected with the focusing table plate through a nut, bearings are arranged at two ends of the screw rod respectively, and the bearing is installed on the screw rod through the nut; the stepping motor is connected with the focusing table plate through the matching action of the bolt and the waist-shaped hole, the stepping motor is provided with a large focusing gear, the focusing table plate is also provided with a proximity switch bracket, and the proximity switch bracket is provided with an inductive proximity switch;
the beam expander comprises a focusing barrel and a fixed barrel, the focusing barrel is hollow inside, a gear ring matched with a focusing gearwheel is arranged outside the focusing barrel, the gear ring and the focusing gearwheel are meshed with each other, and first threads are arranged on the inner wall of the focusing barrel; the outer surface of the fixed cylinder is provided with second threads, the first threads are matched with the second threads, one end of the fixed cylinder is provided with third threads, a limiting convex ring is arranged between the second threads and the third threads, and the outer diameter of the limiting convex ring is larger than the inner diameter of the focusing cylinder.
Preferably, the beam expander is fixedly arranged on the focusing table plate at an included angle of 120 degrees through the focusing gearwheel and the carrier roller assembly.
Preferably, the inductive surface of the inductive proximity switch corresponds to the end of the focusing barrel.
Preferably, the focusing barrel can rotate 360 degrees along the axial direction of the fixed barrel.
Preferably, the fixed cylinder is connected with external coding machine equipment through a third thread in a screwing mode.
Preferably, the diameter of the accommodating hole is larger than the outer diameter of the focusing barrel, and the focusing barrel is not in contact with the focusing platen.
The utility model discloses an actively the effect as follows:
1. the utility model discloses a beam expanding lens, step motor, the mating reaction of focusing gear wheel, wherein the outside setting of the focusing section of thick bamboo of beam expanding lens is the ring gear, step motor drive focusing gear wheel is rotatory, the focusing gear wheel is connected with the ring gear meshing, focusing gear drive ring gear revolve rotatory, thereby realize the focusing with the integrative focusing section of thick bamboo synchronous revolution of ring gear, the transmission mode has been simplified, moreover, the steam generator is simple in structure, the spare part of use is less, thereby reduced in the transmission many times because of there is the error that the difference produced in the part, the driven precision has been improved, the precision of focusing has further been improved, and reduction in production cost, simplify the assembly.
2. The utility model adopts the carrier roller assembly, the focusing barrel of the beam expander is installed and fixed at an included angle of 120 degrees on the focusing platen through the focusing gear wheel and the carrier roller assembly, the bearing of the carrier roller assembly can be abutted with the beam expander, when the focusing gear wheel is driven by the stepping motor to rotate, the focusing gear wheel drives the focusing barrel to rotate, the bearing can synchronously rotate with the focusing barrel, the bearing can support the focusing barrel, the stability of the focusing barrel during rotation is improved, so that the transmission precision is improved, the stress of the focusing barrel can be uniform, and the service life of the focusing barrel is prolonged; in addition, the gear ring on the outer side of the focusing barrel is completely meshed with the focusing large gear, so that the transmission precision is further improved, and the focusing precision is finally improved.
3. The utility model discloses an inductance type proximity switch, inductance type proximity switch's response face is corresponding with the tip of a focusing section of thick bamboo, and when this device just started and need the calibration, inductance type proximity switch can direct perception focusing section of thick bamboo the position to remove to the initial position of setting for through step motor drive focusing section of thick bamboo, wherein inductance type proximity switch's simple structure, and it is convenient to install, simplifies the assembly, convenient operation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure of the present invention.
Fig. 3 is a schematic top view of the present invention.
Fig. 4 is a schematic structural view of the middle focusing table of the present invention.
Fig. 5 is the schematic structural diagram of the middle beam expander of the present invention.
In the figure: the automatic focusing mechanism 1, the beam expander lens 2, the focusing platen 11, the stepping motor 12, the focusing gearwheel 13, the idler assembly 14, the proximity switch bracket 15, the inductive proximity switch 16, the focusing barrel 21, the fixing barrel 22, the accommodating hole 111, the matching groove 112, the waist-shaped hole 113, the screw hole 114, the idler assembly 14, the screw rod 141, the bearing 142, the gear ring 211, the first thread 212, the second thread 221, the third thread 222 and the limiting convex ring 223.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, a laser code-spraying optical automatic focusing mechanism is characterized by comprising an automatic focusing mechanism 1 and a beam expander 2;
the automatic focusing mechanism 1 comprises a focusing table plate 11, a stepping motor 12, a focusing large gear 13, a carrier roller assembly 14, a proximity switch bracket 15 and an inductive proximity switch 16, wherein an accommodating hole 111 for accommodating the beam expander 2 is formed in the middle of the focusing table plate 11, a semicircular matching groove 112 is formed in the edge of the focusing table plate 11, waist-shaped holes 113 are formed in two sides of the matching groove 112 respectively, two screw holes 114 are formed in the focusing table plate 11, the carrier roller assembly 14 is mounted on the screw holes 114, the carrier roller assembly 14 comprises a screw rod 141 and a bearing 142, the screw rod 141 is connected with the focusing table plate 11 through a nut, bearings 142 are arranged at two ends of the screw rod 141 respectively, and the bearing 142 is mounted on the screw rod 141 through a nut; the stepping motor 12 is connected with the focusing bedplate 11 through the matching action of a bolt and a waist-shaped hole 113, the stepping motor 12 is provided with a focusing large gear 13, the position of the stepping motor 12 can be adjusted through the waist-shaped hole 113 during installation, so that the fine adjustment of the center distance between the focusing large gear 13 and a gear ring 211 is realized, the focusing bedplate 11 is also provided with a proximity switch bracket 15, and the proximity switch bracket 15 is provided with an inductive proximity switch 16;
the accommodating hole 111 is internally provided with a beam expander 2, the beam expander 2 comprises a focusing barrel 21 and a fixed barrel 22, the focusing barrel 21 is hollow, the outside of the focusing barrel 21 is provided with a gear ring 211 matched with the focusing large gear 13, the gear ring 211 and the focusing large gear 13 are meshed with each other, and the inner wall of the focusing barrel 21 is provided with a first thread 212; the outer surface of the fixed cylinder 22 is provided with a second thread 221, the first thread 212 is matched with the second thread 221, one end of the fixed cylinder 22 is provided with a third thread 222, a limit convex ring 223 is arranged between the second thread 221 and the third thread 222, the outer diameter of the limit convex ring 223 is larger than the inner diameter of the focusing cylinder 21, the matching effect of the beam expander 2, the stepping motor 12 and the focusing large gear 13 is adopted, the stepping motor 12 drives the focusing large gear 13 to rotate, the focusing large gear 13 is meshed and connected with the gear ring 211, the focusing large gear 13 drives the gear ring 211 to rotate, the focusing cylinder 21 integrated with the gear ring 211 synchronously rotates to realize focusing, the transmission mode is simplified, the structure is simple, fewer parts are used, errors caused by differences of parts in multiple transmissions are reduced, the transmission precision is improved, and the focusing precision is further improved, and the production cost is reduced and the assembly is simplified.
As a technical optimization scheme, beam expander 2 be 120 degrees contained angles through focusing gear wheel 13 and bearing roller subassembly 14 and install fixedly on focusing platen 11, bearing 142 of bearing roller subassembly 14 can butt beam expander 2, it is rotatory when step motor 12 drive focusing gear wheel 13, focusing gear wheel 13 drives focusing barrel 21 rotatory, bearing 142 can be with focusing barrel 21 synchronous revolution, bearing 142 can support focusing barrel 21, improve the stability of focusing barrel 21 when rotatory, thereby improve driven precision, and can make focusing barrel 21 atress even, thereby improve focusing barrel 21's life.
As the utility model discloses a technical optimization scheme, inductance type proximity switch 16's response face corresponding with focusing barrel 21's tip, when this device just starts to need the calibration, inductance type proximity switch 16 can direct perception focusing barrel 21's position to remove to the initial position of setting for through step motor 12 drive focusing barrel 21, wherein inductance type proximity switch 16's simple structure, and it is convenient to install, simplifies the assembly, convenient operation.
As a technical optimization scheme of the utility model, focusing barrel 21 can follow the 360 degrees rotations of a fixed section of thick bamboo 22 axial, through the first screw thread 212 of focusing barrel 21 and the cooperation of the second screw thread 221 of a fixed section of thick bamboo 22 for focusing barrel 21 also can carry out the back-and-forth movement in the rotatory time, thereby realizes the change of beam expander 2 focus.
As a technical optimization scheme of the utility model, solid fixed cylinder 22 screw with outside coding machine equipment through third screw 222 and be connected, gu fixed cylinder 22 is connected fixedly with outside coding machine equipment for when focusing barrel 21 is rotatory, gu fixed cylinder 22 can keep relative still, thereby realize focusing barrel 21 and rotate and the focusing of back-and-forth movement.
As a technical optimization scheme of the utility model, the diameter of accommodation hole 111 be greater than the external diameter of a focusing section of thick bamboo 21, focusing section of thick bamboo 21 and focusing platen 11 contactless.
The utility model discloses when using, at first need calibrate this device, the solid fixed cylinder 22 with beam expander lens 2 is screwed through third screw thread 222 and outside coding machine equipment and is connected, after starting this device, inductance type proximity switch 16 can the perception position of focusing cylinder 21, step motor 12 drive focusing gear 13 is rotatory, focusing gear 13 meshes with gear ring 211 and is connected, focusing gear 13 drives gear ring 211 and rotates, at this moment, through the cooperation of the first screw thread 212 of focusing cylinder 21 and the second screw thread 221 of solid fixed cylinder 22, make focusing cylinder 21 also can carry out the back-and-forth movement in the rotatory time, thereby make focusing cylinder 21 remove to the initial position of settlement;
when code spraying is carried out on external code spraying machine equipment, the focusing is needed, the stepping motor 12 drives the focusing large gear 13 to rotate, the focusing large gear 13 is meshed with the gear ring 211, the focusing large gear 13 drives the gear ring 211 to rotate, and at the moment, the focusing cylinder 21 can also move back and forth while rotating through the matching effect of the first thread 212 of the focusing cylinder 21 and the second thread 221 of the fixed cylinder 22, so that the purpose of focusing is achieved;
meanwhile, when the focus tube 21 rotates, the bearing 142 can synchronously rotate with the focus tube 21, and the bearing 142 can support the focus tube 21, so that the stability of the focus tube 21 during rotation is improved, the transmission precision is improved, the stress of the focus tube 21 can be uniform, and the service life of the focus tube 21 is prolonged.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A laser code-spraying optical automatic focusing mechanism is characterized by comprising an automatic focusing mechanism (1) and a beam expander (2);
the automatic focusing mechanism (1) comprises a focusing bedplate (11), a stepping motor (12), a focusing gearwheel (13), a carrier roller assembly (14), a proximity switch bracket (15) and an inductive proximity switch (16), the middle part of the focusing bedplate (11) is provided with an accommodating hole (111) for accommodating the beam expanding lens (2), the edge of the focusing bedplate (11) is provided with a semicircular matching groove (112), two sides of the matching groove (112) are respectively provided with a waist-shaped hole (113), two screw holes (114) are also formed on the focusing table plate (11), a carrier roller assembly (14) is arranged on the screw holes (114), the carrier roller assembly (14) comprises a screw rod (141) and a bearing (142), the screw rod (141) is connected with the focusing bedplate (11) through a nut, the two ends of the screw rod (141) are respectively provided with the bearing (142), and the bearing (142) is installed on the screw rod (141) through a nut; the stepping motor (12) is connected with the focusing bedplate (11) through the matching action of a bolt and a waist-shaped hole (113), the stepping motor (12) is provided with a focusing large gear (13), the focusing bedplate (11) is also provided with a proximity switch bracket (15), and the proximity switch bracket (15) is provided with an inductive proximity switch (16);
the focusing device is characterized in that a beam expander (2) is arranged in the accommodating hole (111), the beam expander (2) comprises a focusing barrel (21) and a fixed barrel (22), the focusing barrel (21) is hollow, a gear ring (211) matched with the focusing large gear (13) is arranged outside the focusing barrel (21), the gear ring (211) and the focusing large gear (13) are meshed with each other, and a first thread (212) is arranged on the inner wall of the focusing barrel (21); the outer surface of the fixed cylinder (22) is provided with a second thread (221), the first thread (212) is matched with the second thread (221), one end of the fixed cylinder (22) is provided with a third thread (222), a limiting convex ring (223) is arranged between the second thread (221) and the third thread (222), and the outer diameter of the limiting convex ring (223) is larger than the inner diameter of the focusing cylinder (21).
2. The laser inkjet optical automatic focusing mechanism of claim 1, characterized in that: the beam expander (2) is fixedly arranged on the focusing bedplate (11) at an included angle of 120 degrees through the focusing large gear (13) and the carrier roller assembly (14).
3. The laser inkjet optical automatic focusing mechanism of claim 1, characterized in that: the induction surface of the inductive proximity switch (16) corresponds to the end part of the focusing cylinder (21).
4. The laser inkjet optical automatic focusing mechanism of claim 1, characterized in that: the focusing cylinder (21) can axially rotate 360 degrees along the fixed cylinder (22).
5. The laser inkjet optical automatic focusing mechanism of claim 1, characterized in that: the fixed cylinder (22) is connected with external coding machine equipment through a third thread (222) in a screwing mode.
6. The laser inkjet optical automatic focusing mechanism of claim 1, characterized in that: the diameter of the accommodating hole (111) is larger than the outer diameter of the focusing barrel (21), and the focusing barrel (21) is not in contact with the focusing bedplate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921126726.4U CN210334748U (en) | 2019-07-18 | 2019-07-18 | Laser code-spraying optical automatic focusing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921126726.4U CN210334748U (en) | 2019-07-18 | 2019-07-18 | Laser code-spraying optical automatic focusing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210334748U true CN210334748U (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921126726.4U Active CN210334748U (en) | 2019-07-18 | 2019-07-18 | Laser code-spraying optical automatic focusing mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN210334748U (en) |
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- 2019-07-18 CN CN201921126726.4U patent/CN210334748U/en active Active
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