Clamping mechanism of laser marking machine

Abstract

The utility model relates to the technical field of laser marking machines, and discloses a laser marking machine clamping mechanism which comprises a laser marking machine, a clamping assembly is arranged on the top face of a laser marking machine platform, the clamping assembly comprises a supporting frame fixed to the top face of the laser marking machine platform, a connecting strip is arranged below the supporting frame, and the connecting strip is connected with the laser marking machine platform. Clamping seats are fixed to the left end and the right end of the connecting strip, four sliding grooves are formed in the top face of each clamping seat, the four sliding grooves are arranged in a circular array mode with the circle center of the corresponding clamping seat as the center, and clamping plates are arranged in the sliding grooves in a sliding mode. By arranging the four clamping plates, a workpiece can be clamped and fixed from four directions, so that the workpiece is positioned to the center of the clamping seats, the marking effect is ensured, the number of the clamping seats is two, when the workpiece on one clamping seat is marked, the workpiece on the other clamping seat can be positioned, and the marking efficiency is improved. And a worker can disassemble and assemble the workpiece on the other clamping seat, so that the two processes are synchronously carried out, and the marking efficiency is improved.

Description

Technical Field

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

[0002] A laser marking machine uses a laser beam to permanently mark various different material surfaces. The marking effect is achieved by evaporating the surface layer material to expose the deeper layer material, thereby engraving delicate patterns, trademarks, and characters. Laser marking machines are mainly divided into CO2 laser marking machines, semiconductor laser marking machines, fiber laser marking machines, and ultraviolet laser marking machines.

[0003] An existing clamping mechanism of an ultraviolet laser marking machine (Publication No.: CN219852700U) has at least the following drawbacks: The device clamps and positions the workpiece by stepping on the adjusting component to make two clamping arms clamp the workpiece. However, only two clamping arms are used to position the workpiece from the left and right sides, and there is no positioning of the front and back of the workpiece, which results in the workpiece being unable to be accurately positioned, affecting the marking effect. Moreover, when marking, it is necessary to fix the workpiece, and then the workpiece can be disassembled and a new workpiece can be fixed after the marking is completed, thus affecting the marking efficiency. For this reason, the present utility model is proposed. Summary of the Utility Model

[0004] The purpose of the present utility model is to solve the drawbacks existing in the prior art, and a clamping mechanism of a laser marking machine is proposed.

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

[0006] A clamping mechanism of a laser marking machine, including a laser marking machine. A clamping component is arranged on the top surface of the platform of the laser marking machine. The clamping component includes a support frame fixed on the top surface of the platform of the laser marking machine. A connecting bar is arranged below the support frame. Clamping seats are fixed at both the left and right ends of the connecting bar. Four sliding grooves are formed on the top surface of the clamping seat, and the four sliding grooves are arranged in a circular array centered on the center of the clamping seat. A clamping plate is slidably arranged inside the sliding groove.

[0007] As a further scheme of the present utility model, a first motor is fixed on the top surface of the support frame. One end of the output shaft of the first motor penetrates and extends to the bottom surface of the support frame. One end of the output shaft of the first motor is fixed to the top surface of the connecting bar. A lead screw is rotatably connected to one side of the sliding groove near the edge of the clamping seat. The clamping plate is threadedly connected to the outer wall of the lead screw.

[0008] As a further solution of the present utility model, a driving cavity is provided inside the clamping seat. A second motor is fixed on the inner bottom surface of the driving cavity. One end of the output shaft of the second motor is fixed with a driving bevel gear. Four linkage rods are rotatably connected inside the driving cavity. One end of the linkage rod close to the center of the driving cavity is fixed with a driven bevel gear, and the driven bevel gear meshes with the driving bevel gear. One end of the lead screw close to the center of the clamping seat is provided with a fixing groove, and a torque limiter is fixed inside the fixing groove. One end of the linkage rod extends into the sliding groove and is fixed with the inner ring of the torque limiter.

[0009] As a further solution of the present utility model, a connecting frame is fixed on the right side of the laser marking machine. An electric push rod is fixed on the top surface of the connecting frame. One end of the telescopic rod of the electric push rod is fixed with a limiting arc ring, and the limiting arc ring abuts against the outer wall of the clamping seat close to the right side of the laser marking machine.

[0010] As a further solution of the present utility model, a storage bin is provided on the front side of the laser marking machine, and a partition board is fixed at the middle position inside the storage bin.

[0011] As a further solution of the present utility model, a slip ring is provided on the bottom surface of the support frame. The outer ring of the slip ring is fixed with the bottom surface of the support frame, and the inner ring of the slip ring is fixed with the outer wall of the output shaft of the first motor. Both the first motor and the second motor are electrically connected to the inner ring of the slip ring. A PLC controller is fixed on the right side of the laser marking machine, and the PLC controller is electrically connected to the slip ring and the laser marking machine.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] By providing four clamping plates, the workpiece can be clamped and fixed from four directions respectively, so that the workpiece is positioned at the center of the clamping seat, ensuring the marking effect. And two clamping seats are provided, so that when the workpiece on one clamping seat is being marked, the staff can disassemble and assemble the workpiece on the other clamping seat, enabling the two processes to proceed synchronously and increasing the marking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structure diagram of a clamping mechanism of a laser marking machine proposed by the present utility model;

[0015] Figure 2 is a three-dimensional structure diagram of the connecting strip of a clamping mechanism of a laser marking machine proposed by the present utility model;

[0016] Figure 3 is a three-dimensional structure diagram of the clamping seat of a clamping mechanism of a laser marking machine proposed by the present utility model;

[0017] Figure 4Schematic three-dimensional structure diagram of the driving cavity of a clamping mechanism of a laser marking machine proposed by the present utility model.

[0018] In the figure: 1. Laser marking machine; 2. Support frame; 201. Connecting bar; 202. Clamping seat; 203. Sliding groove; 204. Clamping plate; 205. First motor; 206. Driving cavity; 207. Second motor; 208. Driving bevel gear; 209. Linking rod; 210. Fixed groove; 211. Torque limiter; 212. Driven bevel gear; 213. Lead screw; 3. Connecting frame; 301. Electric push rod; 302. Limiting arc ring; 4. Storage bin; 401. Partition board; 5. Electric slip ring. Specific embodiments

[0019] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] Such as Figures 1 - 4As shown in the figure, a clamping mechanism for a laser marking machine includes a laser marking machine 1. A clamping assembly is provided on the top surface of the platform of the laser marking machine 1. The clamping assembly includes a support frame 2 fixed on the top surface of the platform of the laser marking machine 1. A connecting bar 201 is provided below the support frame 2. Clamping seats 202 are fixed at both the left and right ends of the connecting bar 201. Four sliding grooves 203 are formed on the top surface of the clamping seat 202. The four sliding grooves 203 are arranged in a circular array centered on the center of the clamping seat 202. A clamping plate 204 is slidably arranged inside the sliding groove 203. By providing four clamping plates 204, the workpiece can be clamped and fixed from four directions respectively, so that the workpiece is positioned at the center of the clamping seat 202, ensuring the marking effect.

[0023] As Figures 2 - 4 shown in the figure, in this embodiment, a first motor 205 is fixed on the top surface of the support frame 2. One end of the output shaft of the first motor 205 penetrates and extends to the bottom surface of the support frame 2. One end of the output shaft of the first motor 205 is fixed to the top surface of the connecting bar 201. A lead screw 213 is rotatably connected to one side of the sliding groove 203 near the edge of the clamping seat 202. The clamping plate 204 is threadedly connected to the outer wall of the lead screw 213. By the first motor 205, the connecting bar 201 and the two clamping seats 202 can be driven to rotate, so that the two clamping seats 202 alternate, facilitating marking, disassembly and assembly of the workpiece.

[0024] As Figures 2 - 4 shown in the figure, in this embodiment, a driving cavity 206 is formed inside the clamping seat 202. A second motor 207 is fixed on the bottom surface inside the driving cavity 206. One end of the output shaft of the second motor 207 is fixed with a driving bevel gear 208. Four linkage rods 209 are rotatably connected inside the driving cavity 206. A driven bevel gear 212 is fixed to one end of the linkage rod 209 near the center of the driving cavity 206. The driven bevel gear 212 meshes with the driving bevel gear 208. A fixing groove 210 is formed at one end of the lead screw 213 near the center of the clamping seat 202. A torque limiter 211 is fixed inside the fixing groove 210. One end of the linkage rod 209 extends into the sliding groove 203 and is fixed to the inner ring of the torque limiter 211. By driving the driving bevel gear 208 to rotate by the second motor 207, under the meshing action of the driven bevel gear 212 and the driving bevel gear 208, the four linkage rods 209 rotate synchronously, and the torque limiter 211 and the lead screw 213 rotate. When the two clamping plates 204 on the front and rear sides or left and right sides of the workpiece are in contact with the workpiece, the two torque limiters 211 on the front and rear sides or left and right sides of the workpiece are triggered due to the resistance received by the lead screw 213, causing the inner ring of the torque limiter 211 to rotate by itself. At this time, the two lead screws 213 on the left and right sides or front and rear sides of the workpiece continue to rotate until the clamping plates 204 are in contact with the workpiece, so that the four clamping plates 204 approach synchronously and can also clamp and position workpieces of different shapes.

[0025] As Figures 2 - 4 shown, in this embodiment, a connecting frame 3 is fixed on the right side of the laser marking machine 1, an electric push rod 301 is fixed on the top surface of the connecting frame 3, one end of the telescopic rod of the electric push rod 301 is fixed with a limiting arc ring 302, and the limiting arc ring 302 abuts against the outer wall of the clamping seat 202 close to the right side of the laser marking machine 1. By setting the electric push rod 301 to drive the limiting arc ring 302 to abut against the outer wall of the clamping seat 202 close to the right side of the laser marking machine 1, the clamping seat 202 is limited.

[0026] As Figures 2 - 4 shown, in this embodiment, a storage bin 4 is provided on the front side of the laser marking machine 1, and a partition plate 401 is fixed at the middle position inside the storage bin 4. Through the storage bin 4 and the partition plate 401, it is convenient to temporarily place the marked workpieces and the unmarked workpieces on the storage bin 4 and the partition plate 401, which is convenient for the staff to take.

[0027] As Figures 2 - 4 shown, in this embodiment, a slip ring 5 is provided on the bottom surface of the support frame 2. The outer ring of the slip ring 5 is fixed to the bottom surface of the support frame 2, and the inner ring of the slip ring 5 is fixed to the outer wall of the output shaft of the first motor 205. Both the first motor 205 and the second motor 207 are electrically connected to the inner ring of the slip ring 5. A PLC controller is fixed on the right side of the laser marking machine 1, and the PLC controller is electrically connected to the slip ring 5 and the laser marking machine 1. By setting the slip ring 5, it is convenient to keep the normal power supply to the first motor 205 and the second motor 207 when the first motor 205 and the second motor 207 rotate with the connecting bar 201 and the two clamping seats 202.

[0028] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: during use, the workpiece is placed on the top surface of the clamping seat 202, and then the second motor 207 is started to drive the driving bevel gear 208 to rotate. Under the meshing action of the driven bevel gear 212 and the driving bevel gear 208, the four linkage rods 209 rotate synchronously, and the torque limiter 211 and the lead screw 213 rotate. Under the threaded connection between the clamping plate 204 and the outer wall of the lead screw 213, the four clamping plates 204 approach each other and clamp the workpiece. When the two clamping plates 204 on the front and rear sides or left and right sides of the workpiece are in contact with the workpiece, the two torque limiters 211 on the front and rear sides or left and right sides of the workpiece are triggered due to the resistance of the lead screw 213, causing the inner ring of the torque limiter 211 to rotate by itself. At this time, the two lead screws 213 on the left and right sides or front and rear sides of the workpiece continue to rotate until the clamping plate 204 is in contact with the workpiece, so that the four clamping plates 204 approach synchronously and can also clamp and position workpieces of different shapes. Then, the first motor 205 is started to drive the connecting bar 201 and the two clamping seats 202 to rotate, so that the clamping seat 202 fixing the workpiece moves to the lower part of the marking head of the laser marking machine 1. At this time, the staff can install a new workpiece on the other clamping seat 202 and wait for the next marking operation. By setting the electric push rod 301 to drive the limiting arc ring 302 to be in contact with the outer wall of the clamping seat 202 close to the right side of the laser marking machine 1, the clamping seat 202 is limited. Through the storage bin 4 and the partition plate 401, it is convenient to temporarily place the marked workpieces and the unmarked workpieces on the storage bin 4 and the partition plate 401, which is convenient for the staff to take.

[0029] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A clamping mechanism for a laser marking machine, including a laser marking machine (1), characterized in that, The top surface of the platform of the laser marking machine (1) is provided with a clamping assembly. The clamping assembly includes a support frame (2) fixed on the top surface of the platform of the laser marking machine (1). A connecting bar (201) is arranged below the support frame (2). Clamping seats (202) are fixed at both the left and right ends of the connecting bar (201). Four sliding grooves (203) are formed in the top surface of the clamping seat (202). The four sliding grooves (203) are arranged in a circular array with the center of the clamping seat (202) as the center. A clamping plate (204) is slidably arranged inside the sliding groove (203).

2. The clamping mechanism of a laser marking machine according to claim 1, characterized in that, A first motor (205) is fixed on the top surface of the support frame (2). One end of the output shaft of the first motor (205) penetrates and extends to the bottom surface of the support frame (2). One end of the output shaft of the first motor (205) is fixed to the top surface of the connecting bar (201). A lead screw (213) is rotatably connected to one side of the sliding groove (203) near the edge of the clamping seat (202). The clamping plate (204) is threadedly connected to the outer wall of the lead screw (213).

3. The clamping mechanism of a laser marking machine according to claim 2, characterized in that A driving cavity (206) is formed inside the clamping seat (202). A second motor (207) is fixed on the bottom surface inside the driving cavity (206). A driving bevel gear (208) is fixed to one end of the output shaft of the second motor (207). Four linkage rods (209) are rotatably connected inside the driving cavity (206). A driven bevel gear (212) is fixed to one end of the linkage rod (209) near the center of the driving cavity (206). The driven bevel gear (212) meshes with the driving bevel gear (208). A fixing groove (210) is formed at one end of the lead screw (213) near the center of the clamping seat (202). A torque limiter (211) is fixed inside the fixing groove (210). One end of the linkage rod (209) extends into the sliding groove (203) and is fixed to the inner ring of the torque limiter (211).

4. The clamping mechanism of a laser marking machine according to claim 3, characterized in that, A connecting frame (3) is fixed on the right side of the laser marking machine (1). An electric push rod (301) is fixed on the top surface of the connecting frame (3). A limiting arc ring (302) is fixed to one end of the telescopic rod of the electric push rod (301). The limiting arc ring (302) abuts against the outer wall of the clamping seat (202) near the right side of the laser marking machine (1).

5. The clamping mechanism of a laser marking machine according to claim 4, characterized in that, A storage bin (4) is formed on the front side of the laser marking machine (1). A partition plate (401) is fixed at the middle position inside the storage bin (4).

6. The clamping mechanism of a laser marking machine according to claim 5, characterized in that, A slip ring (5) is arranged on the bottom surface of the support frame (2). The outer ring of the slip ring (5) is fixed to the bottom surface of the support frame (2). The inner ring of the slip ring (5) is fixed to the outer wall of the output shaft of the first motor (205). Both the first motor (205) and the second motor (207) are electrically connected to the inner ring of the slip ring (5). A PLC controller is fixed on the right side of the laser marking machine (1). The PLC controller is electrically connected to the slip ring (5) and the laser marking machine (1).

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