Positioning mechanism of laser marking machine

Abstract

The utility model discloses a laser marking machine positioning mechanism, relates to the laser marking technology field, and comprises a machine body, a positioning bench and a pressurization assembly fixedly arranged on the machine body, and two groups of clamping mechanisms symmetrically arranged on two sides of the positioning bench, the top of the positioning bench is provided with a transversely arranged groove, a driving assembly is arranged in the groove, and the clamping mechanisms are arranged on the two sides of the positioning bench. The driving assembly achieves relative movement of the two clamping mechanisms in the length direction of the groove, and the two clamping mechanisms adapt to clamping of regular and irregular workpieces. According to the utility model, the function of self-adaptive movement of the ejector rod according to different workpiece shapes is realized through the clamping assembly, and the pressurizing assembly provides air pressure, so that the ejector rod can be more tightly attached to the surfaces of the workpieces, the workpieces with regular or irregular shapes can be stably clamped, the universality and the adaptability are improved, and the working efficiency is improved. And the whole clamping process does not need excessive manual intervention, and the development trend of modern automatic manufacturing is perfectly met.

Description

Technical Field

[0001] The utility model relates to the technical field of laser marking, in particular to a positioning mechanism of a laser marking machine. Background Technique

[0002] A laser marking machine is an opto-mechatronic device integrating laser technology and computer technology. At present, the application of laser marking technology in industry at home and abroad is being gradually taken seriously. Various new marking devices emerge in an endless stream. With its unique advantages, it is replacing traditional marking methods and can print corresponding marks on the surfaces of various mechanical parts and other objects.

[0003] In the positioning mechanism of a laser marking machine, in the structure disclosed in the document with the publication number CN217571324U, the workpiece can be positioned and marked, but it is very difficult to clamp and position special-shaped workpieces, and the adaptability and versatility are not good. Another example is the structure disclosed in the document with the publication number CN219379362U, which can clamp and position special-shaped workpieces. However, this device needs to insert a vertical rod into the card hole, and then set an adjustable positioning column on the vertical rod. Adjusting the positioning column can clamp the position of the workpiece. Although it can position special-shaped workpieces, multiple groups need to be set around the workpiece and adjusted multiple times, and a lot of manual participation is required, which does not conform to the development trend of modern automated manufacturing. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the prior art, and to propose a positioning mechanism of a laser marking machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A positioning mechanism of a laser marking machine includes a machine body, a positioning table and a pressing assembly fixedly arranged on the machine body, and two groups of clamping mechanisms symmetrically arranged on both sides of the positioning table. A horizontally arranged groove is opened at the top of the positioning table, and a driving assembly is arranged in the groove. The driving assembly enables the two groups of clamping mechanisms to move relatively along the length direction of the groove. The two groups of clamping mechanisms are suitable for clamping regular and irregular workpieces, and the pressing assembly presses the clamping assembly to achieve the firmness of clamping.

[0007] Preferably, the driving assembly includes a motor, a screw rod and a nut sleeve. The motor is fixedly installed on the side of the positioning table. The screw rod is rotatably arranged inside the groove and its left end is connected to the output shaft of the motor. The thread directions at both ends of the screw rod are opposite, and two nut sleeves are arranged and threadedly connected to both ends of the screw rod.

[0008] Preferably, each of the clamping assemblies includes a bearing platform fixedly arranged above the screw sleeve. Circular tubes fixedly connected thereto are linearly and arrayed on the bearing platform from front to back. A sliding ring is slidably arranged inside each circular tube. An inner ring of the sliding ring is fixedly connected to a top rod. One end of the top rod penetrates and extends to the outside of the circular tube. A spring is fixedly connected between a side surface of the sliding ring and an inner side wall of the circular tube.

[0009] Preferably, the width of the bearing platform is the same as that of the groove. The bearing platform slides along the length direction of the groove. An upper surface of the bearing platform coincides with an upper surface of the positioning platform.

[0010] Preferably, the pressurizing assembly includes an air pump, an air pipe, a multi-way pipe, two hoses and two air vent seats. The air pump is installed on the machine body. The air pipe is communicatively installed at an output end of the air pump. The two air vent seats are respectively fixedly arranged on the two bearing platforms. The two hoses are respectively communicatively installed on front sides of the air vent seats. A conduit is communicatively installed between each air vent seat and a corresponding circular tube. The two hoses and the air pipe are communicatively connected through the multi-way pipe.

[0011] Preferably, the multi-way pipe adopts a four-way structure. Three of the interfaces of the multi-way pipe are respectively connected to the air pipe and the two hoses. A valve body is installed in another interface of the multi-way pipe and is used for exhausting air and relieving pressure.

[0012] Preferably, a sealing ring is embedded and installed on an outer ring of the sliding ring. The sealing ring contacts an inner wall of the circular tube to isolate and seal two sides of the sliding ring.

[0013] Preferably, a protective head is fixedly connected to an end of the top rod away from the circular tube. An end of the protective head is spherical and is made of a rubber material.

[0014] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0015] 1. In the present utility model, through the design of the clamping assembly, different top rods in the clamping assembly can contract by different distances, so that each top rod can adaptively move according to the shape of the workpiece. The elastic force of the spring ensures that the top rod always closely adheres to the workpiece, and can flexibly cope with the clamping of regular and irregular workpieces, improving the versatility and adaptability of the equipment.

[0016] 2. In the present utility model, through the air pump and the related pipeline system in the pressurizing assembly, air pressure is provided to the clamping mechanism to pressurize the clamping assembly, so that the top rod can closely adhere to the surface of the workpiece, thereby further enhancing the firmness of the clamping and ensuring the stability during the processing.

[0017] 3. In the present utility model, the entire clamping process is highly automated. One only needs to place the workpiece on the positioning table, and the motor drive can automatically complete the clamping, reducing manual intervention and improving production efficiency, which conforms to the development trend of modern automated manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 6 is a schematic perspective view of a positioning mechanism of a laser marking machine proposed by the present utility model;

[0019] Figure 2 FIG. 10 is a partial structural schematic view of a positioning mechanism of a laser marking machine proposed by the present utility model;

[0020] Figure 3 FIG. 14 is a schematic view of a positioning table and a driving assembly of a positioning mechanism of a laser marking machine proposed by the present utility model;

[0021] Figure 4 FIG. 18 is a schematic structural view of a driving assembly and a clamping mechanism of a positioning mechanism of a laser marking machine proposed by the present utility model;

[0022] Figure 5 FIG. 22 is a schematic cross-sectional view of a clamping mechanism of a positioning mechanism of a laser marking machine proposed by the present utility model;

[0023] Figure 6 FIG. 26 is a schematic cross-sectional view of a single cylinder of a positioning mechanism of a laser marking machine proposed by the present utility model.

[0024] LEGEND DESCRIPTION: 100, machine body; 200, positioning table; 201, groove; 300, pressurizing assembly; 301, air pump; 302, air pipe; 303, multi-way pipe; 304, hose; 305, air vent seat; 306, conduit; 307, valve body; 400, clamping mechanism; 401, bearing table; 402, round tube; 403, slip ring; 404, ejector rod; 405, spring; 406, sealing ring; 407, protective head; 500, driving assembly; 501, motor; 502, screw; 503, nut sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the following further describes the present utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0026] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0027] AsFigure 1-6 As shown in the figure, the utility model provides a positioning mechanism for a laser marking machine, which includes a machine body 100, a positioning table 200 fixedly arranged on the machine body 100, a pressing component 300, and two groups of clamping mechanisms 400 symmetrically arranged on both sides of the positioning table 200. A horizontally arranged groove 201 is formed at the top of the positioning table 200, and a driving component 500 is arranged in the groove 201. The driving component 500 enables the two groups of clamping mechanisms 400 to move relatively along the length direction of the groove 201. The two groups of clamping mechanisms 400 are adapted to clamp regular and irregular workpieces, and the pressing component 300 presses the clamping component to achieve the firmness of clamping.

[0028] In this embodiment, the driving component 500 includes a motor 501, a screw rod 502, and a nut sleeve 503. The motor 501 is fixedly installed on the side of the positioning table 200. The screw rod 502 is rotatably arranged inside the groove 201 and its left end is connected to the output shaft of the motor 501. The thread directions at both ends of the screw rod 502 are arranged in opposite directions. The nut sleeves 503 are arranged in two and are threadedly connected to both ends of the screw rod 502. The motor 501 drives the screw rod 502 to rotate, and the screw rod 502 drives the two nut sleeves 503 to move the two groups of clamping components closer to or away from each other through threaded transmission.

[0029] In this embodiment, each clamping component includes a bearing platform 401 fixedly arranged above the nut sleeve 503. Circular tubes 402 fixedly connected to it are linearly arrayed from front to back on the bearing platform 401. A sliding ring 403 is slidably arranged inside each circular tube 402. A top rod 404 is fixedly connected to the inner circle of the sliding ring 403. One end of the top rod 404 penetrates and extends to the outside of the circular tube 402. A spring 405 is fixedly connected between the side surface of the sliding ring 403 and the inner side wall of the circular tube 402. When clamping a workpiece, the top rod 404 that first contacts the workpiece will move into the cylinder and drive the sliding ring 403 to compress the spring 405 until it stops moving. The movement states of the other top rods 404 are the same until all the top rods 404 contact the workpiece. The elastic force of the spring 405 makes the top rod 404 always contact the workpiece. The distances that different top rods 404 contract into the circular tube 402 can be different, so as to realize the clamping of irregular workpieces.

[0030] In this embodiment, the width of the bearing platform 401 is the same as the width of the groove 201. The bearing platform 401 slides along the length direction of the groove 201. The upper surface of the bearing platform 401 coincides with the upper surface of the positioning table 200. The bearing platform 401 slides along the groove 201 to achieve positioning, avoiding the tendency of the bearing platform 401 to rotate circumferentially, and the bearing platform 401 is not higher than the positioning table 200, so it will not contact the workpiece, avoiding affecting the normal use of the top rod 404.

[0031] In this embodiment, the pressurizing assembly 300 includes an air pump 301, an air pipe 302, a multi-way pipe 303, two flexible hoses 304 and two air vent seats 305. The air pump 301 is installed on the machine body 100, the air pipe 302 is connected and installed at the output end of the air pump 301. The two air vent seats 305 are respectively fixedly arranged on the two bearing platforms 401. The two flexible hoses 304 are respectively connected and installed on the front sides of the air vent seats 305. A conduit 306 is connected and installed between each air vent seat 305 and the corresponding circular pipe 402. The two flexible hoses 304 and the air pipe 302 are connected through the multi-way pipe 303. The air pump 301 ventilates and pressurizes the air vent seats 305 through the air pipe 302, the air pipe 302, the multi-way pipe 303 and the flexible hoses 304. The gas enters the circular pipe 402 through the conduit 306 and acts on the slip ring 403. The air pressure acts on the slip ring 403 to make the ejector rod 404 press tightly against the workpiece, fixing the workpiece more firmly. Since the circular pipe 402 is connected to the air vent seat 305 through the conduit 306, the pressure in several cylinders is the same, and the pressures exerted by multiple ejector rods 404 on the workpiece are also roughly the same.

[0032] In this embodiment, the multi-way pipe 303 adopts a four-way structure. Three of the interfaces of the multi-way pipe 303 are respectively connected to the air pipe 302 and the two flexible hoses 304. A valve body 307 is installed in the other interface of the multi-way pipe 303 and is used for exhausting air and relieving pressure. When the clamping assembly disengages from the workpiece after workpiece processing, the valve body 307 is opened to exhaust air and relieve pressure, so that the ejector rod 404 is reset under the action of the spring 405.

[0033] In this embodiment, a sealing ring 406 is embedded and installed on the outer ring of the slip ring 403. The sealing ring 406 contacts the inner wall of the circular pipe 402 to isolate and seal both sides of the slip ring 403. The sealing ring 406 plays a sealing role.

[0034] In this embodiment, a protective head 407 is fixedly connected to the end of the ejector rod 404 away from the circular pipe 402. The end of the protective head 407 is spherical and made of rubber material. The protective head 407 plays a protective role, so that the ejector rod 404 will not scratch the workpiece when contacting the workpiece.

[0035] The usage method and working principle of this device:

[0036] When the device is in use, first place the workpiece to be processed on the positioning table 200. The motor 501 drives the screw rod 502 to make the nut sleeve 503 drive the bearing table 401 to move closer to each other. A certain ejector rod 404 on the bearing table 401 first contacts the workpiece and will move into the cylinder. The ejector rod 404 drives the slip ring 403 to squeeze the spring 405 until it stops moving. The movement states of the other ejector rods 404 are the same until all the ejector rods 404 contact the workpiece. The elastic force of the spring 405 makes the ejector rod 404 always contact the workpiece. The distances that different ejector rods 404 retract into the circular tube 402 can be different, so as to realize the clamping of irregular workpieces. Subsequently, turn on the air pump 301. The air pump 301 fills the cylinder with gas through the air pipe 302, the air pipe 302, the multi-way pipe 303, the hose 304, the air vent seat 305 and the conduit 306. The air pressure can act on the slip ring 403 to make the ejector rod 404 tightly press the workpiece, making the fixing of the ejector rod 404 on the workpiece more firm. Whether it is a regular or irregular workpiece, stable positioning can be obtained, and the adaptability and versatility are better. And only the workpiece needs to be placed, and the manual participation in the whole clamping process is less, and the degree of automation is improved, which conforms to the current development trend.

[0037] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A positioning mechanism for a laser marking machine, characterized in that: It includes a machine body (100), a positioning table (200) fixedly arranged on the machine body (100) and a pressing assembly (300), and two groups of clamping mechanisms (400) symmetrically arranged on both sides of the positioning table (200). A horizontally arranged groove (201) is formed at the top of the positioning table (200), and a driving assembly (500) is arranged in the groove (201). The driving assembly (500) enables the two groups of clamping mechanisms (400) to move relatively along the length direction of the groove (201). The two groups of clamping mechanisms (400) are adapted to clamp regular and irregular workpieces, and the pressing assembly (300) presses the clamping assembly to achieve firm clamping.

2. The positioning mechanism of a laser marking machine according to claim 1, wherein: The driving assembly (500) includes a motor (501), a screw rod (502) and a nut sleeve (503). The motor (501) is fixedly installed on the side of the positioning table (200). The screw rod (502) is rotatably arranged inside the groove (201) and its left end is connected to the output shaft of the motor (501). The thread directions at both ends of the screw rod (502) are arranged in opposite directions. Two nut sleeves (503) are arranged and threadedly connected to both ends of the screw rod (502).

3. The positioning mechanism of a laser marking machine according to claim 2, characterized in that: Each clamping assembly includes a bearing platform (401) fixedly arranged above the nut sleeve (503). Circular tubes (402) fixedly connected to it are linearly arranged in an array from front to back on the bearing platform (401). A sliding ring (403) is slidably arranged inside each circular tube (402). A top rod (404) is fixedly connected to the inner circle of the sliding ring (403). One end of the top rod (404) penetrates and extends to the outside of the circular tube (402). A spring (405) is fixedly connected between the side surface of the sliding ring (403) and the inner side wall of the circular tube (402).

4. The positioning mechanism of a laser marking machine according to claim 3, characterized in that: The width of the bearing platform (401) is the same as the width of the groove (201). The bearing platform (401) slides along the length direction of the groove (201), and the upper surface of the bearing platform (401) coincides with the upper surface of the positioning table (200).

5. The positioning mechanism of a laser marking machine according to claim 3, characterized in that: The pressing assembly (300) includes an air pump (301), an air pipe (302), a multi-way pipe (303), two flexible hoses (304) and two air vent seats (305). The air pump (301) is installed on the machine body (100). The air pipe (302) is connected in communication with the output end of the air pump (301). The two air vent seats (305) are respectively fixedly arranged on the two bearing platforms (401). The two flexible hoses (304) are respectively connected in communication with the front sides of the air vent seats (305). A conduit (306) is connected in communication between each air vent seat (305) and the corresponding circular tube (402). The two flexible hoses (304) and the air pipe (302) are connected in communication through the multi-way pipe (303).

6. The positioning mechanism of a laser marking machine according to claim 5, characterized in that: The multi-way pipe (303) adopts a four-way structure. Three of the interfaces of the multi-way pipe (303) are respectively connected to the air pipe (302) and the two flexible hoses (304). A valve body (307) is installed in the other interface of the multi-way pipe (303) and is used for exhausting air and relieving pressure.

7. The positioning mechanism of a laser marking machine according to claim 3, wherein: A sealing ring (406) is embedded and installed on the outer ring of the slip ring (403), and the sealing ring (406) contacts the inner wall of the circular tube (402) to isolate and seal both sides of the slip ring (403).

8. The positioning mechanism of a laser marking machine according to claim 3, characterized in that: A protective head (407) is fixedly connected to the end of the top rod (404) far from the circular tube (402), and the end of the protective head (407) is spherical and made of rubber material.

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