CN219053236U

CN219053236U - Positioning tool special for workpiece coding and measuring

Info

Publication number: CN219053236U
Application number: CN202223421419.3U
Authority: CN
Inventors: 高兴民; 武来军; 任彬彬; 黄凯
Original assignee: Wuxi Duoendor Automation Co ltd
Current assignee: Wuxi Duoendor Automation Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-05-23
Anticipated expiration: 2032-12-19

Abstract

The utility model relates to a positioning tool special for workpiece coding and measuring, which comprises a transmission mechanism, wherein opposite Z-shaped connecting frames are arranged at two ends of the transmission mechanism, each connecting frame is provided with an air cylinder and a centering seat, the two air cylinders drive the two centering seats to do opposite linear motion through the transmission mechanism, the opposite end surfaces of the two centering seats are respectively provided with a first cylindrical push rod and a second cylindrical push rod, the first push rod and the second push rod push a workpiece to the central position of the positioning tool, the centering seat provided with the first push rod is also provided with a laser coding machine, and the focal length of the laser coding machine is equal to the installation length of the first push rod. Through setting up drive mechanism and push rod, can make the work piece be in the central point of location frock to guarantee that the terminal surface of work piece waiting to be carved the code coincides with the focal plane of laser marking machine, guarantee the effect of laser lithography.

Description

Positioning tool special for workpiece coding and measuring

Technical Field

The utility model relates to the technical field of positioning tools, in particular to a positioning tool special for workpiece coding and measuring.

Background

In the automatic production process, a laser coding machine is often used for marking characters or patterns on the surface of a workpiece, so as to record the processing state and technological parameters of the workpiece. The laser code etching machine mainly comprises a laser emitter, a lens, a control system and a power supply system, and has the advantages of high code etching speed, fine and accurate etched patterns and the like.

When the laser coding machine is used for coding the workpiece, the end face of the workpiece to be coded needs to be placed in the marking range of the laser coding machine to ensure that the coding position is accurate and the lines are clear. If the vertical distance between the end face of the workpiece and the lens of the laser code engraving machine cannot be ensured to be equal to the focal length of the laser code engraving machine, the problems of unclear, fuzzy, blushing and the like of the code engraving pattern can be caused; meanwhile, the problem that the auxiliary coding device shields the end face of the workpiece and causes coding failure is avoided. In the prior art, a workpiece is pushed to a designated position by using a push plate and then is coded, the push plate can only ensure that the workpieces with the same size can be coded, the push plate is not suitable for the working condition of workpiece size change, and the push plate can block the end face of the workpiece to influence the coding effect.

Disclosure of Invention

The applicant provides a positioning tool special for workpiece coding and measurement aiming at the defects in the prior art, and the workpiece can be positioned at the center of the positioning tool by arranging a transmission mechanism and a push rod, so that the end face of the workpiece to be coded is ensured to coincide with the focal plane of a laser coding machine, and the laser coding effect is ensured; meanwhile, the problem of code engraving failure caused by shielding of the end face of the workpiece can be effectively avoided by arranging the plurality of push rods with smaller end face sizes.

The technical scheme adopted by the utility model is as follows:

the utility model provides a special work piece is carved with sign indicating number and measuring location frock, includes drive mechanism, drive mechanism's both ends are provided with relative link that is the zigzag, and every link is last to install a cylinder and a centering seat, and two cylinders drive two centering seats through drive mechanism and do opposite direction rectilinear motion, and two centering seat terminal surfaces are installed respectively and are cylindric first push rod and second push rod, first push rod and second push rod push away the work piece to the central point of location frock, still install laser etching machine on the centering seat of installation first push rod, laser etching machine's focus equals with the installation length of first push rod.

As a further improvement of the above technical scheme:

the first push rod and the second push rod are provided with a plug on opposite end surfaces, and the plug is made of polyurethane.

The structure of the transmission mechanism is as follows: including two cylinder mounting panels, the bottom mid-mounting of every cylinder mounting panel has the cylinder, and the cylinder mounting panel is sheet-like, and the both sides of cylinder are provided with the connecting rod, and two cylinder mounting panels of two connecting rod symmetrical connection are provided with the slide rail respectively in the bottom of two connecting rods, and the bottom middle part of two connecting rods is provided with centering gear mount pad, the top middle part of centering gear mount pad is provided with centering gear, two centering racks are installed to centering gear cooperation, two centering racks pass through the link respectively with the output of two cylinders is connected, and two centering racks cooperate respectively and install the guide block that is used for spacing.

And the side ends of the two connecting rods are symmetrically provided with stay wire displacement sensors, and the input ends of the stay wire displacement sensors are respectively connected with the two centering seats.

The middle part of centering gear is provided with the screw hole, and centering gear passes through screw hole and bearing cooperation installation, and the bearing cooperation is installed the bearing frame, and bearing frame fixed mounting is on the centering gear mount pad.

The centering seat has the structure that: including the slider with slide rail cooperation installation, slider fixed mounting is on the top of apron, the apron is square, and slider evenly arranges in the four corners of apron, and the bottom of apron is provided with the support frame, the bottom of support frame is provided with the protection base, the terminal surface of protection base evenly is provided with the several push rod mount pad, the spring is installed to the inside cooperation of push rod mount pad, still is provided with the inductor that corresponds with the push rod mount pad on the protection base.

The first push rod and the second push rod penetrate through the protection base through the push rod installation seat and correspond to the inductor.

Still be provided with camera mounting bracket and laser marking machine mounting bracket on the centering seat of installation first push rod, the camera mounting bracket is used for installing the camera, and laser marking machine passes through laser marking machine mounting bracket and installs on the centering seat.

The lens of the camera is aligned with the end face of the workpiece to be coded.

The bottom of the workpiece is provided with a workpiece seat for limiting.

The beneficial effects of the utility model are as follows:

the utility model has compact and reasonable structure and convenient operation, and the workpiece can be positioned at the center of the positioning tool by arranging the transmission mechanism and the push rod, thereby ensuring that the end surface of the workpiece to be coded coincides with the focal plane of the laser coding machine and ensuring the effect of laser coding; meanwhile, the problem of code engraving failure caused by shielding of the end face of the workpiece can be effectively avoided by arranging the plurality of push rods with smaller end face sizes.

The utility model also has the following advantages:

(1) According to the utility model, the laser coding machine is fixed on the centering seat, and moves along with the centering seat in the workpiece positioning process, so that the distance between the workpiece and the laser coding machine after the workpiece positioning is finished is always equal to the focal length of the laser coding machine, and the workpiece positioning device can be suitable for working conditions of workpiece size change.

(2) By arranging the stay wire displacement sensor, the length information of the workpiece can be obtained, the length dimension parameter of the workpiece can be obtained by measuring while laser coding is completed, and the length measuring function is realized.

(3) By arranging the centering gears, the strokes of the two centering seats are guaranteed to be consistent, and therefore the local effect of the workpiece is guaranteed.

(4) By arranging the sliding rail and the corresponding sliding block, the tight connection of the mechanism parts and stable and reliable movement are ensured.

(5) By setting the camera, the coding result can be obtained in real time, and the coding result is ensured to meet the requirement.

(6) The first push rod provided by the utility model has adjustable installation length, so that the use requirements of laser lithography machines of different models can be met.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a side view of fig. 2.

Fig. 4 is a schematic structural view of a transmission mechanism in the present utility model.

Fig. 5 is a front view of fig. 4.

Fig. 6 is a top view of fig. 4.

Fig. 7 is a schematic structural view of the centering seat in the present utility model.

Fig. 8 is a front view of fig. 7.

Fig. 9 is a schematic view of the present utility model in an operating state.

Wherein: 1. a first push rod; 2. a second push rod; 3. a transmission mechanism; 4. centering seat; 5. a plug; 6. a cylinder; 7. a camera; 8. a laser lithography machine; 9. a pull wire displacement sensor; 10. a workpiece seat; 11. a workpiece;

301. a cylinder mounting plate; 302. a connecting rod; 303. a connecting frame; 304. a slide rail; 305. centering the rack; 306. a centering gear; 307. a centering gear mounting base; 308. a guide block;

401. a cover plate; 402. a support frame; 403. a push rod mounting seat; 404. a spring; 405. an inductor; 406. a slide block; 407. a protective base; 408. a camera mounting rack; 409. laser lithography machine mounting bracket.

Detailed Description

The following describes specific embodiments of the present utility model with reference to the drawings.

The structure and the function of the utility model are as follows:

as shown in fig. 1-9, a positioning tool specially used for workpiece coding and measuring comprises a transmission mechanism 3, opposite Z-shaped connecting frames 303 are arranged at two ends of the transmission mechanism 3, an air cylinder 6 and a centering seat 4 are mounted on each connecting frame 303, the two air cylinders 6 drive the two centering seats 4 to do opposite linear motion through the transmission mechanism 3, a first push rod 1 and a second push rod 2 which are cylindrical are respectively mounted on opposite end surfaces of the two centering seats 4, the first push rod 1 and the second push rod 2 push a workpiece 11 to a centering position of the positioning tool, a laser coding machine 8 is further mounted on the centering seat 4 on which the first push rod 1 is mounted, and the focal length of the laser coding machine 8 is equal to the mounting length of the first push rod 1. According to the utility model, the lengths of the first push rod 1 and the second push rod 2 are unequal, the installation positions of the two centering seats 4 are asymmetric, and the two opposite end surfaces of the first push rod 1 and the second push rod 2 are symmetrical about the center of the centering gear 306 by adjusting the installation positions of the two centering seats 4 and the length of the first push rod 1, so that the workpiece 11 can be positioned at the center of the positioning tool; the first push rod 1 is arranged on the centering seat 4 through threaded connection, so that the installation length of the first push rod 1 can be adjusted to ensure that the end face of the workpiece 11 to be coded coincides with the focal plane of the laser coding machine 8 and the coding effect is ensured; meanwhile, the end surfaces of the first push rod 1 and the second push rod 2 are small in size, the contact area between the first push rod and the workpiece 11 is small, and the end surfaces of the workpiece 11 cannot be blocked to influence the coding effect.

The opposite end surfaces of the first push rod 1 and the second push rod 2 are provided with a plug 5, and the plug 5 is made of polyurethane. The polyurethane plug 5 can protect the end face of the workpiece 11 from being worn and scratched.

The structure of the transmission mechanism 3 is as follows: including two cylinder mounting panels 301, the bottom middle part fixed mounting of every cylinder mounting panel 301 has the cylinder 6, the cylinder mounting panel 301 is sheet-like, the both sides of cylinder 6 are provided with connecting rod 302, two connecting rod 302 symmetrical connection two cylinder mounting panels 301, the bottom of two connecting rod 302 is provided with slide rail 304 respectively, the bottom middle part of two connecting rod 302 is provided with centering gear mount pad 307, the top middle part of centering gear mount pad 307 is provided with centering gear 306, centering gear 306 cooperation is installed two centering racks 305, two centering racks 305 are connected with the output of two cylinders 6 respectively through link 303, two centering racks 305 cooperate the guide block 308 that is used for spacing respectively. The centering gear 306 and the two centering racks 305 are meshed for transmission, so that the strokes of the two centering seats 4 are consistent, and the workpiece 11 is ensured to be positioned at the centering position of the positioning tool.

The lateral ends of the two connecting rods 302 are symmetrically provided with stay wire displacement sensors 9, and the input ends of the stay wire displacement sensors 9 are respectively connected with the two centering seats 4. The stay wire displacement sensor 9 obtains the length information of the workpiece 11 through the process of the control system by obtaining the travel of the centering seat 4, and the length measuring function is completed.

The middle part of centering gear 306 is provided with the screw hole, and centering gear 306 passes through screw hole and bearing cooperation installation, and the bearing cooperation is installed the bearing frame, and the bearing frame fixed mounting is on centering gear mount pad 307. By providing the bearing and the bearing seat, it is ensured that the centering gear 306 can rotate on the centering gear mounting seat 307, and the centering function can be realized.

The centering seat 4 has the structure that: including the slider 406 with slide rail 304 cooperation installation, slider 406 fixed mounting is on the top of apron 401, and apron 401 is square, and slider 406 evenly arranges in the four corners of apron 401, and the bottom of apron 401 is provided with support frame 402, and the bottom of support frame 402 is provided with protection base 407, and the terminal surface of protection base 407 evenly is provided with several push rod mount pad 403, and spring 404 is installed to the inside cooperation of push rod mount pad 403, still is provided with the inductor 405 that corresponds with push rod mount pad 403 on the protection base 407. The support frame 402 adopts a triangular structure to realize the support function, so that the support effect is stable and reliable; the sensor 405 is used for sensing whether the first push rod 1 and the second push rod 2 push the workpiece 11 into place, and when the workpiece 11 is pushed to the central position, the sensor 405 feeds back a signal to the control system to enable the control system to start the laser lithography machine 8, and the workpiece 11 is coded.

The first push rod 1 and the second push rod 2 penetrate through the protection base 407 through the push rod mounting seat 403 to correspond to the sensor 405. The push rod mounting seat 403 is composed of two parts, the first part is movably connected with the protection base 407 and fixed with the two push rods, and can perform linear motion of the compression spring 404; the second part is fixed with the protection base 407 and is movably connected with the two push rods, so that the two push rods are limited; a spring 404 is disposed intermediate the first and second portions of the pushrod mount 403.

When the workpiece 11 is pushed to the center position, the cylinder 6 continuously works, the reaction force of the workpiece 11 to the first push rod 1 and the second push rod 2 is increased, so that the first push rod 1 and the second push rod 2 can generate tiny displacement, at the moment, the first part of the push rod mounting seat 403 makes linear motion of the compression spring 404, the two push rods make linear motion along with the direction of the compression spring 404, and penetrate out of the second part of the push rod mounting seat 403, the distance between the sensor 405 and the workpiece is shortened, the sensor 405 senses the position change feedback signals of the two push rods to the control system, and the next operation is performed.

The centering seat 4 provided with the first push rod 1 is also provided with a camera mounting frame 408 and a laser coding machine mounting frame 409, the camera mounting frame 408 is used for mounting a camera 7, and the laser coding machine 8 is mounted on the centering seat 4 through the laser coding machine mounting frame 409; the lens of the camera 7 is directed at the end face of the workpiece 11 to be coded. The camera 7 is used for monitoring whether the result of the engraving meets the requirement, and the laser engraving machine 8 is used for engraving the required pattern or words on the workpiece 11.

The bottom end of the workpiece 11 is provided with a workpiece seat 10 for limiting. The workpiece 11 is cylindrical, the workpiece 11 is required to be laterally placed, a bottom surface of the workpiece 11 is marked with codes, the workpiece seat 10 can prevent the workpiece 11 from rolling around and simultaneously protect the workpiece from being worn and scratched, and the workpiece seat 10 is placed between the first push rod 1 and the second push rod 2.

The working process of the utility model is as follows:

each centering seat 4 is provided with two push rod mounting seats 403, and then two first push rods 1 and two second push rods 2 are respectively mounted on the two centering seats 4, so that the cylindrical workpiece 11 is centered and positioned, and the length is measured and coded.

The output ends of the two cylinders 6 are connected with the cover plate 401 through the connecting frame 303, the sliding rail 304 arranged at the bottom end of the connecting frame 303 is matched with the sliding block 406 arranged on the cover plate 401, when the cylinders 6 are started, the two centering seats 4 move stably through the sliding rail 304 and the sliding block 406, and the strokes of the two centering seats 4 are kept consistent through the centering gears 306 and the two centering racks 305.

When the positioning tool works, a workpiece 11 is placed on a workpiece seat 10, a spring 404 is in a free state, two air cylinders 6 are started, and the output ends of the air cylinders 6 drive two centering seats 4 to do opposite linear motion through a connecting frame 303, so that a first push rod 1 and a second push rod 2 arranged on the centering seats 4 are driven to do opposite linear motion to push the workpiece 11;

when the first push rod 1 and the second push rod 2 push the workpiece 11 to a central position, the first push rod 1 and the second push rod 2 continuously push the workpiece 11 under the drive of the air cylinder 6, the reaction force of the workpiece 11 to the first push rod 1 and the second push rod 2 is increased, so that the first push rod 1 and the second push rod 2 generate tiny displacement compression springs 404 in opposite directions, at the moment, the sensor 405 senses the displacement generated by the first push rod 1 and the second push rod 2, the sensor 405 sends a signal that the workpiece 11 is centered, the control system starts the laser encoder 8, the laser encoder 8 marks patterns on the end face of the workpiece 11, and the camera 7 monitors the marking result at any moment;

meanwhile, the stay wire displacement sensor 9 feeds back the displacement information of the two centering seats 4 to the control system, and the control system obtains the length information of the workpiece 11 through data analysis and processing.

According to the utility model, the push rod is arranged, so that the workpiece 11 can be ensured to be positioned at the center, and the code-carving requirement of the laser code carving machine 8 is met; meanwhile, the coding result can be ensured to meet the use requirement. The utility model has simple structure and reliable function, has the functions of coding and length measurement, and is suitable for various use scenes.

The above description is intended to illustrate the utility model and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the utility model.

Claims

1. A special positioning tool for workpiece coding and measurement is characterized in that: including drive mechanism (3), the both ends of drive mechanism (3) are provided with relative link (303) that are the zigzag, install a cylinder (6) and a centering seat (4) on every link (303), two cylinders (6) drive two centering seats (4) through drive mechanism (3) and do opposite direction rectilinear motion, and first push rod (1) and second push rod (2) that are cylindric are installed respectively to the terminal surface in opposite directions of two centering seats (4), first push rod (1) and second push rod (2) push away work piece (11) to the central point of location frock, still install laser marking machine (8) on centering seat (4) of installation first push rod (1), the focus of laser marking machine (8) equals with the installation length of first push rod (1).

2. The positioning tool special for workpiece coding and measuring as set forth in claim 1, wherein: the end faces of the first push rod (1) and the second push rod (2) which are opposite are provided with a plug (5), and the plug (5) is made of polyurethane.

3. The positioning tool special for workpiece coding and measuring as set forth in claim 1, wherein: the structure of the transmission mechanism (3) is as follows: including two cylinder mounting panel (301), the bottom middle part fixed mounting of every cylinder mounting panel (301) has cylinder (6), and cylinder mounting panel (301) are sheet-like, and the both sides of cylinder (6) are provided with connecting rod (302), and two cylinder mounting panel (301) are connected to two connecting rod (302) symmetry, and the bottom of two connecting rods (302) is provided with slide rail (304) respectively, and the bottom middle part of two connecting rods (302) is provided with centering gear mount pad (307), the top middle part of centering gear mount pad (307) is provided with centering gear (306), two centering racks (305) are installed in the cooperation of centering gear (306), two centering racks (305) are connected with the output of two cylinders (6) respectively through link (303), and two centering racks (305) are installed in the cooperation respectively and are used for spacing guide block (308).

4. A positioning tool special for workpiece coding and measuring as defined in claim 3, wherein: and the side ends of the two connecting rods (302) are symmetrically provided with stay wire displacement sensors (9), and the input ends of the stay wire displacement sensors (9) are respectively connected with the two centering seats (4).

5. A positioning tool special for workpiece coding and measuring as defined in claim 3, wherein: the middle part of centering gear (306) is provided with the screw hole, and centering gear (306) are installed through screw hole and bearing cooperation, and the bearing frame is installed to the bearing cooperation, and bearing frame fixed mounting is on centering gear mount pad (307).

6. A positioning tool special for workpiece coding and measuring as defined in claim 3, wherein: the centering seat (4) has the structure that: including slider (406) with slide rail (304) cooperation installation, slider (406) fixed mounting is on the top of apron (401), apron (401) are square, and slider (406) evenly arrange in the four corners of apron (401), and the bottom of apron (401) is provided with support frame (402), the bottom of support frame (402) is provided with protection base (407), the terminal surface of protection base (407) evenly is provided with several push rod mount pad (403), spring (404) are installed in the inside cooperation of push rod mount pad (403), still be provided with on protection base (407) inductor (405) that correspond with push rod mount pad (403).

7. The positioning tool special for workpiece coding and measuring as set forth in claim 6, wherein: the first push rod (1) and the second push rod (2) penetrate through the protection base (407) through the push rod installation seat (403) to correspond to the inductor (405).

8. The positioning tool special for workpiece coding and measuring as set forth in claim 6, wherein: still be provided with camera mounting bracket (408) and laser marking machine mounting bracket (409) on centering seat (4) of installation first push rod (1), camera mounting bracket (408) are used for installing camera (7), and laser marking machine (8) are installed on centering seat (4) through laser marking machine mounting bracket (409).

9. The positioning tool special for workpiece coding and measuring as set forth in claim 8, wherein: the lens of the camera (7) is aligned with the end face of the workpiece (11) to be coded.

10. The positioning tool special for workpiece coding and measuring as set forth in claim 1, wherein: the bottom end of the workpiece (11) is provided with a workpiece seat (10) for limiting.