Special clamp for laser engraving

Abstract

The utility model relates to the technical field of laser engraving clamps, and discloses a special clamp for laser engraving, which comprises a mounting frame, and a clamping device is arranged on the inner side of the mounting frame. According to the special clamp for laser engraving, by arranging an air suction assembly, a telescopic pipe, a sleeve, an abutting rod, an elastic rod, an abutting plate and an air guide shell, the air suction assembly is started, negative pressure is generated in a mounting frame and a clamping box, laser engraving waste gas is absorbed, the sleeve is rotated, the telescopic pipe is separated from the air guide shell above, the elastic rod extends, and the air guide shell is sealed; after the clamping box and the workpiece are controlled to turn over, the telescopic pipe is connected with the air guide pipe on the other side; and by arranging a baffle, a second spring, a limiting sliding plate, a second screw rod and a sealing plate, when the two clamping boxes get close to each other, the second spring extends, so that the baffle slides along the inner wall of the mounting frame, the baffle blocks vent holes in the mounting frame on the outer sides of the two clamping boxes, and airflow only flows between the two clamping boxes.

Description

Technical Field

[0001] This utility model relates to the field of laser engraving fixture technology, specifically a special fixture for laser engraving. Background Technology

[0002] Laser engraving is a process that uses CNC technology as its foundation and laser as its processing medium. The physical transformation of the material under laser engraving irradiation involves instantaneous melting and vaporization, which enables laser engraving to achieve its processing purpose.

[0003] Chinese patent discloses a tooling fixture for laser engraving, publication number CN214602779U, which includes a base, a fixing block on one side of the top of the base, guide rods on both sides above the top of the base, a square block at one end of each guide rod, a fixing plate at the other end of each guide rod, and a fastening component connected to one side of the fixing block. This invention utilizes the base, fixing block, guide rods, square block, fixing plate, and fastening component in combination. The fastening component clamps and fixes the workpiece, preventing it from shaking and causing deviation in the laser engraving position, thus avoiding workpiece waste.

[0004] However, it still has the following drawbacks: the device uses the elastic force of the first spring to clamp the workpiece, but the laser engraving process generates harmful gases, and the device does not absorb or purify these gases, resulting in low safety during use. Therefore, we propose a specialized fixture for laser engraving to solve this problem. Utility Model Content

[0005] The purpose of this invention is to provide a special fixture for laser engraving to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a special fixture for laser engraving, comprising a mounting frame, wherein a clamping device is provided on the inner side of the mounting frame, and the clamping device comprises a clamping part;

[0007] The clamping part includes an adjusting cylinder, a rotating disk, a connecting plate, a clamping box, a second sliding rod, and a first sliding rod. The outer surface of the rotating disk rotates through the inner wall of the mounting frame and extends to the outer side of the mounting frame via a first bearing. The outer surface of the adjusting cylinder rotates through the outer surface of the rotating disk and extends to the outer side of the mounting frame via a second bearing. The connecting plate is slidably sleeved on the outer surface of the first sliding rod. The outer surface of the first sliding rod is fixedly connected to the outer surface of the clamping box.

[0008] An air intake section is provided on the inner side of the mounting bracket;

[0009] The air intake unit includes an air intake assembly, a limiting slide plate, a telescopic tube, a contact rod, and an air guide shell. The top surface of the air intake tube and the bottom surface of the telescopic tube of the air intake assembly are fixedly and continuously connected to the outer surface of the mounting frame. The outer surface of the air guide shell is fixedly and continuously connected to the outer surface of the clamping box. The outer surface of the contact rod is fixedly connected to the inner wall of the telescopic tube. A sliding groove is provided on the inner wall of the mounting frame. The outer surface of the limiting slide plate extends into the sliding groove and slides in connection with the inner wall of the sliding groove.

[0010] A further improvement is that the clamping part further includes a first screw, a first spring, a positioning bolt, and a fixing plate. The outer surface of the first screw is fixedly connected to the outer surface of the connecting plate, and the outer surface of the first screw extends into the interior of the adjusting cylinder and is threadedly connected to the inner wall of the adjusting cylinder. By setting the second slide rod, the first screw, and the adjusting cylinder, rotating the adjusting cylinder drives the two clamping plates to clamp the workpiece.

[0011] A further improvement is that the outer surface of the fixing plate is fixedly connected to the outer surface of the rotating disk, and the outer surface of the positioning bolt is threaded through the outer surface of the fixing plate and the outer surface of the mounting bracket in sequence. By setting the positioning bolt and the fixing plate, it is convenient to control the rotation and fixation of the workpiece on the rotating disk.

[0012] A further improvement is that one end of the first spring is fixedly connected to the outer surface of the connecting plate, and the other end of the first spring is fixedly connected to the outer surface of the clamping box, so as to use the elastic force of the spring to buffer the workpiece.

[0013] A further improvement is that the suction part also includes a baffle, a second spring, a sleeve, an elastic rod, an abutment plate, a sealing plate, and a second screw. The sleeve is threaded onto the outer surface of the telescopic tube and the outer surface of the air guide shell. The outer surface of the abutment plate is fixedly connected to the outer surface of the elastic rod, and the outer surface of the elastic rod is fixedly connected to the inner wall of the air guide shell. By setting the elastic rod, sleeve, abutment plate, and abutment rod, it is convenient for the air guide shell to be sealed when the telescopic tube is separated from the air guide shell, which facilitates the flipping of the clamping box and the workpiece.

[0014] A further improvement is that the outer surface of the baffle is fixedly connected to the outer surface of the limiting slide plate, one end of the second spring is fixedly connected to the inner wall of the slide groove, and the other end of the second spring is fixedly connected to the outer surface of the limiting slide plate. By setting the second spring, the limiting slide plate and the baffle, it is convenient to block the vent holes on the outside of the two clamping boxes on the mounting frame.

[0015] A further improvement is that the outer surface of the second screw is rotatably connected to the outer surface of the sealing plate through a bearing seat, and the threaded surface of the outer surface of the second screw penetrates the inner wall of the clamping box and extends to the outer side of the clamping box. By setting the second screw and the sealing plate, the sealing plate is driven to move by rotating the second screw, thereby blocking the vent hole at the bottom of the clamping box.

[0016] Compared with existing technologies, the beneficial effects of this utility model are as follows: This special fixture for laser engraving, by setting up an air suction component, a telescopic tube, a sleeve, abutment rod, an elastic rod, abutment plate, and an air guide shell, activates the air suction component, creating negative pressure inside the mounting frame and the clamping box through the telescopic tube, thus absorbing the laser engraving exhaust gas. Rotating the sleeve separates the telescopic tube from the upper air guide shell, and the elastic rod extends, sealing the air guide shell. After controlling the clamping box and workpiece to flip, the telescopic tube is connected to the air guide tube on the other side. The system includes a baffle, a second spring, a limiting slide plate, a second screw, and a sealing plate. When the two clamping boxes approach each other, the second spring extends, causing the baffle to slide along the inner wall of the mounting frame. The baffle blocks the vent holes on the mounting frame outside the two clamping boxes, ensuring that airflow only occurs between the two clamping boxes. The system also includes an adjusting cylinder, a rotating disc, a first screw, a connecting plate, clamping boxes, a first sliding rod, a first spring, a fixing plate, positioning bolts, and a second sliding rod. Rotating the adjusting cylinder drives the first screw to move, allowing the two clamping boxes to clamp the workpiece. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the clamping device of this utility model;

[0018] Figure 2 This is a top sectional view of the three-dimensional structure of the clamping device of this utility model;

[0019] Figure 3 This is a partial sectional view of the three-dimensional structure of the clamping device of this utility model;

[0020] Figure 4 for Figure 3 Enlarged view of the structure at point B in the middle;

[0021] Figure 5 This is a partial cross-sectional view of the three-dimensional structure of the air intake part of this utility model.

[0022] In the figure: 1 mounting bracket, 2 clamping device, 21 clamping part, 22 suction part, 211 adjusting cylinder, 212 rotating disk, 213 first screw, 214 connecting plate, 215 clamping box, 216 first slide rod, 217 first spring, 218 fixing plate, 219 positioning bolt, 220 second slide rod, 221 suction assembly, 222 baffle, 223 second spring, 224 limiting slide plate, 225 telescopic tube, 226 sleeve, 227 abutment rod, 228 elastic rod, 229 abutment plate, 220 air guide shell, 201 second screw, 202 sealing plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 The present invention provides a technical solution: a special fixture for laser engraving, including a mounting frame 1, a clamping device 2 is provided on the inner side of the mounting frame 1, and the clamping device 2 includes a clamping part 21;

[0025] The clamping part 21 includes an adjusting cylinder 211, a rotating disk 212, a connecting plate 214, a clamping box 215, a second sliding rod 210, and a first sliding rod 216. The outer surface of the rotating disk 212 rotates through the inner wall of the mounting frame 1 and extends to the outer side of the mounting frame 1 via a first bearing. The outer surface of the adjusting cylinder 211 rotates through the outer surface of the rotating disk 212 and extends to the outer side of the mounting frame 1 via a second bearing. The connecting plate 214 is slidably sleeved on the outer surface of the first sliding rod 216. The outer surface of the first sliding rod 216 is fixedly connected to the outer surface of the clamping box 215. The clamping part 21 also includes a first screw 213, a first spring 217, a positioning bolt 219, and a fixing plate 218.

[0026] The outer surface of the first screw 213 is fixedly connected to the outer surface of the connecting plate 214. The outer surface of the first screw 213 extends into the interior of the adjusting cylinder 211 and is threadedly connected to the inner wall of the adjusting cylinder 211. One end of the first spring 217 is fixedly connected to the outer surface of the connecting plate 214. The other end of the first spring 217 is fixedly connected to the outer surface of the clamping box 215.

[0027] The outer surface of the fixed plate 218 is fixedly connected to the outer surface of the rotating disk 212. The outer surface of the positioning bolt 219 is threaded through the outer surface of the fixed plate 218 and the outer surface of the mounting bracket 1 in sequence. By setting up the adjusting cylinder 211, the rotating disk 212, the first screw 213, the connecting plate 214, the clamping box 215, the first slide rod 216, the first spring 217, the fixed plate 218, the positioning bolt 219 and the second slide rod 220, rotating the adjusting cylinder 211 drives the first screw 213 to move, so that the two clamping boxes 215 clamp the workpiece.

[0028] An air intake 22 is provided on the inner side of the mounting bracket 1;

[0029] The suction unit 22 includes a suction assembly 221, a limiting slide plate 224, a telescopic tube 225, an abutment rod 227, and an air guide shell 220. The top surface of the suction tube of the suction assembly 221 and the bottom surface of the telescopic tube 225 are fixedly and continuously connected to the outer surface of the mounting frame 1. The outer surface of the air guide shell 220 is fixedly and continuously connected to the outer surface of the clamping box 215. The outer surface of the abutment rod 227 is fixedly connected to the inner wall of the telescopic tube 225. A sliding groove is provided on the inner wall of the mounting frame 1. The outer surface of the limiting slide plate 224 extends into the sliding groove and slides in connection with the inner wall of the sliding groove. The suction unit 22 also includes a baffle 222, a second spring 223, a sleeve 226, an elastic rod 228, an abutment plate 229, a sealing plate 202, and a second screw 201.

[0030] The sleeve 226 is threaded onto the outer surface of the telescopic tube 225 and the outer surface of the air guide shell 220. The outer surface of the abutment plate 229 is fixedly connected to the outer surface of the elastic rod 228, and the outer surface of the elastic rod 228 is fixedly connected to the inner wall of the air guide shell 220. By setting up the suction assembly 221, telescopic tube 225, sleeve 226, abutment rod 227, elastic rod 228, abutment plate 229 and air guide shell 220, the suction assembly 221 is activated. Through the telescopic tube 225, a negative pressure is generated inside the mounting frame 1 and the clamping box 215 to absorb the laser engraving exhaust gas. The sleeve 226 is rotated to separate the telescopic tube 225 from the upper air guide shell 220. The elastic rod 228 extends to seal the air guide shell 220. After controlling the clamping box 215 and the workpiece to flip, the telescopic tube 225 is connected to the air guide tube 220 on the other side.

[0031] The outer surface of the second screw 201 is rotatably connected to the outer surface of the sealing plate 202 through the bearing seat. The threaded surface of the outer surface of the second screw 201 penetrates the inner wall of the clamping box 215 and extends to the outer side of the clamping box 215.

[0032] The outer surface of the baffle 222 is fixedly connected to the outer surface of the limiting slide plate 224. One end of the second spring 223 is fixedly connected to the inner wall of the slide groove, and the other end of the second spring 223 is fixedly connected to the outer surface of the limiting slide plate 224. By setting the baffle 222, the second spring 223, the limiting slide plate 224, the second screw 201 and the sealing plate 202, when the two clamping boxes 215 approach each other, the second spring 223 extends, causing the baffle 222 to slide along the inner wall of the mounting frame 1. The baffle 222 blocks the vent holes on the mounting frame 1 on the outside of the two clamping boxes 215, so that the airflow only flows between the two clamping boxes 215.

[0033] In use, rotating the adjusting cylinder 211 drives the first screw 213 to move. The first screw 213 drives the connecting plate 214 and the clamping box 215 to move, so that the two clamping boxes 215 clamp the workpiece. Activating the suction assembly 221 creates negative pressure inside the mounting frame 1. Through the telescopic hose 225, negative pressure is also created inside the clamping box 215, causing the laser engraving exhaust gas to be drawn into the suction assembly 221. When performing laser engraving on the bottom of the workpiece, rotating the sleeve 226 separates the sleeve 226 from the air guide shell 220, and the elastic rod 2... 28. Push the abutment plate 229 upward to block the air guide shell 22. Rotate the positioning bolt 219 to release the positioning of the rotating disk 212. Rotate the rotating disk 212 and rotate the positioning bolt 219 to position the rotating disk 212, so that the clamping box 215 and the workpiece are flipped. Then, use the sleeve 226 to connect the telescopic tube 225 to the air guide shell 220 on the opposite side. Then rotate the second screw 201 below to block the air guide hole in the lower part of the clamping box 215.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A special fixture for laser engraving comprising a mounting frame (1), characterized in that: The mounting frame (1) is internally provided with a clamping device (2), which comprises a clamping part (21); The clamping part (21) comprises an adjusting cylinder (211), a rotating disc (212), a connecting plate (214), a clamping box (215), a second sliding rod (210) and a first sliding rod (216), the outer surface of the rotating disc (212) is rotatably penetrated through the inner wall of the mounting frame (1) and extends to the outside of the mounting frame (1) through a first bearing, the outer surface of the adjusting cylinder (211) is rotatably penetrated through the outer surface of the rotating disc (212) and extends to the outside of the mounting frame (1) through a second bearing, the connecting plate (214) is slidingly sleeved on the outer surface of the first sliding rod (216), and the outer surface of the first sliding rod (216) is fixedly connected with the outer surface of the clamping box (215); The mounting frame (1) is internally provided with an air suction part (22); The air suction part (22) comprises an air suction assembly (221), a limiting sliding plate (224), an elastic tube (225), an abutting rod (227) and a gas guide shell (220), the top surface of the air suction pipe of the air suction assembly (221) and the bottom surface of the elastic tube (225) are fixedly and penetratingly connected with the outer surface of the mounting frame (1), the outer surface of the gas guide shell (220) is fixedly and penetratingly connected with the outer surface of the clamping box (215), the outer surface of the abutting rod (227) is fixedly connected with the inner wall of the elastic tube (225), and the inner wall of the mounting frame (1) is provided with a sliding groove, and the outer surface of the limiting sliding plate (224) extends to the inside of the sliding groove and is slidingly connected with the inner wall of the sliding groove.

2. A fixture for laser engraving as claimed in claim 1, wherein: The clamping part (21) further comprises a first screw rod (213), a first spring (217), a positioning bolt (219) and a fixed plate (218), the outer surface of the first screw rod (213) is fixedly connected with the outer surface of the connecting plate (214), and the outer surface of the first screw rod (213) extends to the inside of the adjusting cylinder (211) and is threadedly connected with the inner wall of the adjusting cylinder (211).

3. A fixture for laser engraving as claimed in claim 2, wherein: The outer surface of the fixed plate (218) is fixedly connected with the outer surface of the rotating disc (212), and the outer surface of the positioning bolt (219) is threadedly penetrated through the outer surface of the fixed plate (218) and the outer surface of the mounting frame (1) in sequence.

4. A fixture for laser engraving as claimed in claim 2, wherein: One end of the first spring (217) is fixedly connected with the outer surface of the connecting plate (214), and the other end of the first spring (217) is fixedly connected with the outer surface of the clamping box (215).

5. A fixture for laser engraving as claimed in claim 1, wherein: The air suction part (22) further comprises a baffle (222), a second spring (223), a sleeve (226), an elastic rod (228), an abutting plate (229), a sealing plate (202) and a second screw rod (201), the sleeve (226) is threadedly sleeved on the outer surface of the elastic tube (225) and the outer surface of the gas guide shell (220), the outer surface of the abutting plate (229) is fixedly connected with the outer surface of the elastic rod (228), and the outer surface of the elastic rod (228) is fixedly connected with the inner wall of the gas guide shell (220).

6. A fixture for laser engraving as claimed in claim 5, wherein: The outer surface of the baffle (222) is fixedly connected with the outer surface of the limiting sliding plate (224), one end of the second spring (223) is fixedly connected with the inner wall of the sliding groove, and the other end of the second spring (223) is fixedly connected with the outer surface of the limiting sliding plate (224).

7. A fixture for laser engraving as claimed in claim 5, wherein: The outer surface of the second screw rod (201) is rotatably connected with the outer surface of the sealing plate (202) through a bearing seat, and the threaded surface of the outer surface of the second screw rod (201) penetrates through the inner wall of the clamping box (215) and extends to the outer side of the clamping box (215).

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