A quick die changing positioning device for fiber laser cutting machine

Abstract

The utility model relates to optical fiber laser cutting equipment technical field especially a kind of quick die change positioning device of optical fiber laser cutting machine, including replacement mechanism, it includes frame body and laser cutting machine ontology, lens is provided in laser cutting machine ontology, negative pressure component for being used to adsorb lens is provided in lens lower end, rotating dismounting component for being used to dismount and replace lens is provided in the lower end of negative pressure component;Butt limiting mechanism, including horizontal plate, L-shaped support frame is slidably arranged in horizontal plate upper end, L-shaped support frame lower end is provided with horizontal movement component for pushing its transverse reciprocating movement. Solve the problem that the lens is easily polluted or scratched by manual dismounting in the prior art, lack of stable dismounting.

Description

Technical Field

[0001] This utility model relates to the field of fiber laser cutting equipment technology, and in particular to a rapid mold changing and positioning device for a fiber laser cutting machine. Background Technology

[0002] In fiber laser cutting machines, the lens is a core optical component, and its precision and cleanliness directly affect the cutting quality. After long-term use, it needs to be disassembled and replaced regularly to ensure the performance of the equipment.

[0003] In existing technologies, lens replacement largely relies on manual operation, with tools used to directly contact the lens surface for disassembly, which easily leads to the lens getting dirty or scratched. During disassembly, there is a lack of stable positioning and support structures, making the lens prone to displacement. Repeated adjustments are required to reinstall it in place, making the operation cumbersome and inefficient. Utility Model Content

[0004] In view of the problems in the above or existing technologies, such as the easy contamination or scratches caused by manual lens disassembly and the lack of stable disassembly and assembly, this utility model is proposed.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a replacement mechanism, which includes a frame and a laser cutting machine body. A lens is provided inside the laser cutting machine body. A negative pressure component for adsorbing the lens is provided at the lower end of the lens. A rotary disassembly component for disassembling and replacing the lens is provided at the lower end of the negative pressure component. The abutment limiting mechanism includes a horizontal plate, an L-shaped support frame is slidably disposed on the upper end of the horizontal plate, and a lateral moving component is disposed on the lower end of the L-shaped support frame for pushing it to move laterally back and forth.

[0006] As a preferred embodiment of the rapid mold changing and positioning device for the fiber laser cutting machine of this utility model, the negative pressure component includes a suction cup adsorbed on the lower surface of the lens. A cylinder is fixedly installed in the middle of the lower end of the suction cup. The inner cavity of the cylinder is connected to the inner cavity of the suction cup, and a piston is slidably installed at the lower end of the inner cavity of the cylinder. The piston is used to extract the gas between the suction cup and the lens through the cylinder, so as to generate negative pressure between the suction cup and the lens and thus achieve tighter adsorption.

[0007] As a preferred embodiment of the rapid mold changing and positioning device for the fiber laser cutting machine of this utility model, the rotary disassembly assembly includes a fixed frame fixedly installed outside the laser cutting machine body. A lower support frame is fixedly installed at the lower end of the fixed frame. Three meshing gears are rotatably installed at the lower end of the lower support frame. A bidirectional lead screw is installed in the middle of each gear on both sides. A fixed base plate is rotatably installed at the upper end of the bidirectional lead screw and fixedly connected to the lower surface of the suction cup. The fixed base plate is used to drive the bidirectional lead screw to rotate synchronously when the gears rotate, thereby pulling the fixed base plate downward and pulling the suction cup and lens that are adsorbed together out of the inner cavity of the laser cutting machine body for replacement.

[0008] As a preferred embodiment of the rapid mold changing and positioning device for the fiber laser cutting machine of this utility model, a knob is fixedly provided at the lower end of the gear located in the middle, and the knob is used to drive the three gears to rotate synchronously.

[0009] As a preferred embodiment of the rapid mold changing and positioning device for the fiber laser cutting machine of this utility model, the transverse component includes T-shaped sliding grooves opened at both ends of the transverse plate. Each T-shaped sliding groove is slidably provided with a T-shaped sliding rod fixedly connected to the middle of the lower end of the L-shaped support frame. One end of each of the two T-shaped sliding rods is fixedly connected with a compression spring for pushing the L-shaped support frame to the lower end of the fixed base plate for support.

[0010] As a preferred embodiment of the rapid mold changing and positioning device for the fiber laser cutting machine of this utility model, the lower end of the T-shaped slide is provided with a lower through groove. The width of the lower through groove is smaller than the width of the lower end of the T-shaped slide cavity. A vertical insert block is slidably provided at the end of the lower through groove cavity away from the compression spring and is fixedly connected to the bottom surface of the lower support frame. The upper end of the vertical insert block is set as an inclined surface on one side of the T-shaped slide rod. The inclined surface is used to abut against the T-shaped slide rod and push the L-shaped support frame out of the lower end of the fixed base plate to release the limit.

[0011] As a preferred embodiment of the rapid mold changing and positioning device for the fiber laser cutting machine of this utility model, the horizontal plate is threadedly connected to the upper end of the bidirectional lead screw, so that when the bidirectional lead screw pushes the suction cup upward, the horizontal plate drives the L-shaped support frame to move downward, thereby causing the upper end of the L-shaped support frame to abut against the lower end surface of the fixed base plate. The middle part of the horizontal plate is fixedly connected to the lower end of the piston, so that when the horizontal plate moves downward, it will drive the piston to suck up the gas between the suction cup and the lens.

[0012] The beneficial effects of the rapid mold changing and positioning device for fiber laser cutting machines of this invention are as follows: 1. By using the suction cup in the negative pressure component to adsorb the lens, the traditional manual direct contact operation is replaced. This effectively avoids direct contact between fingers, gloves or tools and the lens surface, thereby preventing the lens from getting dirty, fingerprints or scratched. It ensures that the cleanliness and precision of the lens are not affected, and solves the problem that manual disassembly can easily lead to lens contamination or damage in the existing technology, thus ensuring the cutting quality of the fiber laser cutting machine.

[0013] 2. Gear transmission drives the bidirectional lead screw to move synchronously, enabling smooth extraction and installation of the lens. In conjunction with the L-shaped support frame and transverse component of the abutment and limit mechanism, it provides stable support and positioning for the lens during disassembly, preventing lens displacement. At the same time, the combination of negative pressure adsorption and mechanical transmission reduces the steps of repeated manual adjustments, significantly shortening the mold change time. It solves the problems of cumbersome operation and low efficiency caused by the lack of stable support in traditional disassembly, making lens replacement more convenient and efficient. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the rapid mold changing and positioning device for a fiber laser cutting machine.

[0016] Figure 2 This is an enlarged schematic diagram of the position of the lens replacement device in the rapid mold changing positioning device of a fiber laser cutting machine.

[0017] Figure 3 This is a schematic diagram of the negative pressure component and the rotary disassembly component of the quick mold changing positioning device for a fiber laser cutting machine.

[0018] Figure 4 This is an enlarged schematic diagram of the negative pressure component and the rotary disassembly component of the rapid mold changing positioning device for a fiber laser cutting machine.

[0019] Figure 5 This is a schematic diagram of the position of the transverse movement component of the rapid mold changing positioning device for a fiber laser cutting machine.

[0020] Figure 6 This is an exploded view of the transverse movement component of the rapid mold changing and positioning device for a fiber laser cutting machine.

[0021] In the diagram: 10. Frame; 11. Laser cutting machine body; 12. Lens; 13. Negative pressure assembly; 131. Suction cup; 132. Cylinder; 133. Piston; 14. Rotary disassembly assembly; 141. Fixed frame; 142. Lower support frame; 143. Gear; 144. Two-way lead screw; 145. Fixed base plate; 146. Knob; 20. Horizontal plate; 21. L-shaped support frame; 22. Horizontal movement assembly; 221. T-shaped slide; 222. T-shaped slide rod; 223. Compression spring; 224. Lower through groove; 225. Vertical insertion block; 226. Inclined surface. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Example 1, referring to Figures 1-6 This is the first embodiment of the present invention. This embodiment provides a quick lens changing and positioning device for a fiber laser cutting machine, which can achieve the effect of replacing the lens inside the laser cutting machine body. It includes a replacement mechanism, which includes a frame 10 and a laser cutting machine body 11. A lens 12 is provided inside the laser cutting machine body 11. A negative pressure component 13 for adsorbing the lens 12 is provided at the lower end of the lens 12. The negative pressure component 13 includes a suction cup 131 adsorbed on the lower surface of the lens 12. A cylinder 132 is fixedly provided in the middle of the lower end of the suction cup 131. The inner cavity of the cylinder 132 is connected to the inner cavity of the suction cup 131, and a piston 133 is slidably provided at the lower end of the inner cavity of the cylinder 132. The piston 133 is used to extract the gas between the suction cup 131 and the lens 12 through the cylinder 132, so that a negative pressure is generated between the suction cup 131 and the lens 12, thereby achieving a tighter adsorption.

[0024] Specifically, the suction cup 131, through the interaction of the cylinder 132 and the piston 133, can apply a force to the surface of the lens 12 to pull the lens 12 out of the laser cutting machine body 11. At the same time, replacing the lens 12 through the suction cup 131 can avoid the direct contact of fingers or gloves with the surface of the lens 12, thus preventing the surface of the lens 12 from getting dirty.

[0025] Furthermore, the lower end of the negative pressure assembly 13 is provided with a rotary disassembly assembly 14 for disassembling and replacing the lens 12. The rotary disassembly assembly 14 includes a fixed frame 141 fixedly installed outside the laser cutting machine body 11. A lower support frame 142 is fixedly installed at the lower end of the fixed frame 141. Three meshing gears 143 are rotatably installed at the lower end of the lower support frame 142. A bidirectional lead screw 144 is provided in the middle of each of the gears 143 on both sides. A fixed base plate 145 is rotatably installed at the upper end of the bidirectional lead screw 144 and fixedly connected to the lower surface of the suction cup 131. The fixed base plate 145 is used to drive the bidirectional lead screw 144 to rotate synchronously when the gears 143 rotate, thereby pulling the fixed base plate 145 downward and pulling the suction cup 131 and lens 12 that are adsorbed together out of the inner cavity of the laser cutting machine body 11 for replacement. A knob 146 is fixedly installed at the lower end of the gear 143 in the middle. The knob 146 is used to drive the three gears 143 to rotate synchronously.

[0026] The bidirectional lead screw 144 has a threadless area in the middle, and the thread height at the lower end of the bidirectional lead screw 144 is sufficient to allow the suction cup 131 and the lens 12 to be adsorbed. The fixing frame 141 is fixedly connected to the laser cutting machine body 11 by a clamp, thereby achieving stable and convenient replacement. The bidirectional lead screw 144 has a concave vertical groove, and the gears 143 on both sides have limit blocks on the through surface of the bidirectional lead screw 144 that match the vertical groove on the bidirectional lead screw 144. Thus, when the gears 143 rotate, the bidirectional lead screw 144 can rotate synchronously and can be raised and lowered by normal threaded connection with the lower support frame 142.

[0027] When the lens 12 needs to be replaced during use, the entire device is first fixed to the outside of the laser cutting machine body 11 by the clamp on the fixing bracket 141 to ensure that the device will not shake during the replacement process. Then, the knob 146 in the rotating disassembly assembly 14 is rotated. Since the three gears 143 mesh with each other, the rotation of the knob 146 will drive the middle gear 143 to rotate, which in turn drives the gears 143 on both sides to rotate synchronously. The threaded through hole in the middle of the gears 143 on both sides is threadedly connected to the bidirectional lead screw 144. The rotation of the gears 143 will be converted into the linear motion of the bidirectional lead screw 144. As the bidirectional lead screw 144 moves downward, the fixed base plate 145 rotatably connected to its upper end will be pulled downward.

[0028] Meanwhile, the suction cup 131 is fixedly connected to the lower surface of the base plate 145, so the suction cup 131 will move downward together with the base plate 145. During this process, since the inner cavity of the cylinder 132 in the negative pressure assembly 13 is connected to the inner cavity of the suction cup 131, when the suction cup 131 contacts the lower surface of the lens 12, the piston 133 slides at the lower end of the inner cavity of the cylinder 132, and draws out the gas between the suction cup 131 and the lens 12 through the cylinder 132, so that a negative pressure is generated between the two, thereby allowing the suction cup 131 to tightly adhere to the lens 12. As the bidirectional lead screw 144 continues to move downward, the suction force generated by the negative pressure applies a downward pulling force to the lens 12 through the suction cup 131, smoothly pulling the lens 12 out of the laser cutting machine body 11. Since the bidirectional lead screw 144 has a threadless area in the middle and the thread height at the lower end is sufficient to meet the suction and pulling requirements of the suction cup 131 and the lens 12, it ensures that the lens 12 can be completely pulled out. After lens 12 is pulled out, it can be replaced. At this time, the suction cup 131's adsorption of lens 12 prevents fingers or gloves from directly contacting the surface of lens 12, effectively preventing dirt from getting on the surface of lens 12 and ensuring the cleanliness of lens 12. When replacing with a new lens 12, the knob 146 is operated in the reverse direction, causing the bidirectional lead screw 144 to move upward, transporting the new lens 12 to the installation position inside the laser cutting machine body 11 via suction cup 131. Then, the piston 133 slides in the reverse direction, releasing the negative pressure between suction cup 131 and lens 12, completing the installation of lens 12. The entire replacement process is stable and convenient.

[0029] Example 2, refer to Figures 1-6This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a contact limiting mechanism for a quick mold-changing positioning device for a fiber laser cutting machine. This solves the problem that the suction cup may not seal properly with the lens due to reverse movement during the replacement process, leading to disassembly failure. The mechanism includes a horizontal plate 20, with an L-shaped support frame 21 slidably mounted on the upper end of the horizontal plate 20. A transverse moving component 22 for pushing the L-shaped support frame 21 to move laterally is mounted on the lower end of the L-shaped support frame 21. The transverse moving component 22 includes T-shaped grooves 221 at both ends of the horizontal plate 20. T-shaped sliding rods 222, fixedly connected to the middle of the lower end of the L-shaped support frame 21, are slidably mounted within each T-shaped groove 221. Two T-shaped sliding rods 222 are fixedly connected at opposite ends to compression springs 223 for pushing the L-shaped support frame 21 to the lower end of the fixed base plate 145 for support. The lower end of the T-shaped sliding groove 221 is provided with a lower through groove 224. The width of the lower through groove 224 is smaller than the width of the lower end of the inner cavity of the T-shaped sliding groove 221. A vertical insert block 225 is slidably provided at the end of the lower through groove 224 away from the compression spring 223 and fixedly connected to the bottom surface of the lower support frame 142. The upper end of the vertical insert block 225 is located on one side of the T-shaped sliding rod 222 and is set as an inclined surface 226. The inclined surface 226 is used to abut against the T-shaped sliding rod 222 and push the L-shaped support frame 21 out of the lower end of the fixed base plate 145 to release the limit.

[0030] The horizontal plate 20 is threaded to the upper end of the bidirectional lead screw 144. When the bidirectional lead screw 144 pushes the suction cup 131 upward, the horizontal plate 20 drives the L-shaped support frame 21 to move downward, so that the upper end of the L-shaped support frame 21 abuts against the lower end face of the fixed base plate 145. The middle part of the horizontal plate 20 is fixedly connected to the lower end of the piston 133. When the horizontal plate 20 moves downward, it will drive the piston 133 to suck up the gas between the suction cup 131 and the lens 12.

[0031] Specifically, because the middle part of the bidirectional lead screw 144 is unthreaded, when the horizontal plate 20 moves downward under the action of the upper thread of the bidirectional lead screw 144 and drives the piston 133 to extract the gas between the suction cup 131 and the lens 12 to form a more stable vacuum, the horizontal plate 20 will drive the L-shaped support frame 21 to move downward. Since the upper surface of the protruding end of the L-shaped support frame 21 is flat and the lower surface of the L-shaped support frame 21 is inclined, when the L-shaped support frame 21 moves downward with the horizontal plate 20, it will move outward with the help of the inclined surface and the L-shaped support frame 21. Then, when the L-shaped support frame 21 moves to the blank position of the bidirectional lead screw 144, the upper surface of the L-shaped support frame 21 moves to the lower end of the cylinder 132 under the action of the transverse component 22 to abut against the cylinder 132. The distance that the horizontal plate 20 can move in the blank area on the bidirectional lead screw 144 is equal to the distance that the suction cup 131 removes the lens 12 from the laser cutting machine body 11.

[0032] When in use, first use the clamps on the fixing frame 141 to secure the entire device to the outside of the laser cutting machine body 11 to ensure that the device will not shake during the replacement process.

[0033] When lens 12 needs to be replaced, operate the knob 146 in the rotating disassembly assembly 14 to move the bidirectional lead screw 144 upward. Since the horizontal plate 20 is threadedly connected to the upper end of the bidirectional lead screw 144, the upward movement of the bidirectional lead screw 144 will push the horizontal plate 20 downward. Since the middle part of the horizontal plate 20 is fixedly connected to the lower end of the piston 133, the downward movement of the horizontal plate 20 will drive the piston 133 to slide downward in the cylinder 132, starting to extract the gas between the suction cup 131 and the lens 12, so that a negative pressure that can provide a stable fixing force is formed between the two.

[0034] As the horizontal plate 20 moves downward, it will cause the L-shaped support frame 21 to abut against the upper surface of the fixed base plate 145, and push the T-shaped slide rod 222 at the lower end of the L-shaped support frame 21 to slide outward in the T-shaped slide groove 221, so that the L-shaped support frame 21 can move downward together with the horizontal plate 20. At the same time, the horizontal plate 20 moves to the unthreaded area in the middle of the double-acting screw 144 under the action of the thread. At this time, the L-shaped support frame 21 moves to the lower end of the fixed base plate 145 and is compressed. Under the action of spring 223, the upper surface of T-shaped slide bar 222 and L-shaped support frame 21 abuts against the lower surface of fixed base plate 145. Thus, when bidirectional lead screw 144 moves downward, the mutual abutment between fixed base plate 145 and L-shaped support frame 21 pushes horizontal plate 20 to move downward synchronously in the unthreaded area of ​​bidirectional lead screw 144. This allows the piston 133, cylinder 132, and the negative pressure vacuum state inside piston 133 to be maintained until lens 12 is removed from inside laser cutting machine body 11.

[0035] When the lens 12 is removed from the laser cutting machine body 11, as the horizontal plate 20 continues to move downward, the vertical inserts 225 at both ends of the horizontal plate 20 will be inserted into the lower through slot 224 and abut against the lower end of the T-shaped slide rod 222. Since the upper end of the vertical insert 225 is provided with an inclined surface 226, when the vertical insert 225 abuts against the T-shaped slide rod 222, the inclined surface 226 can push the T-shaped slide rod 222 and the L-shaped support frame 21 fixedly connected to the T-shaped slide rod 222 to move backward synchronously. This causes the L-shaped support frame 21 to separate from the fixed base plate 145 and pushes the piston 133 upward, allowing air to enter between the suction cup 131 and the lens 12, applying a reverse thrust to the suction cup 131 and the lens 12, thereby separating the two.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A rapid mold-changing and positioning device for a fiber laser cutting machine, characterized in that: include, The replacement mechanism includes a frame (10) and a laser cutting machine body (11). A lens (12) is provided inside the laser cutting machine body (11). A negative pressure component (13) for adsorbing the lens (12) is provided at the lower end of the lens (12). A rotary disassembly component (14) for disassembling and replacing the lens (12) is provided at the lower end of the negative pressure component (13). The abutment limiting mechanism includes a horizontal plate (20), an L-shaped support frame (21) is slidably provided on the upper end of the horizontal plate (20), and a transverse component (22) for pushing it to move laterally back and forth is provided on the lower end of the L-shaped support frame (21).

2. The rapid mold-changing positioning device for a fiber laser cutting machine as described in claim 1, characterized in that: The negative pressure assembly (13) includes a suction cup (131) adsorbed on the lower surface of the lens (12). A cylinder (132) is fixedly installed in the middle of the lower end of the suction cup (131). The inner cavity of the cylinder (132) is connected to the inner cavity of the suction cup (131), and a piston (133) is slidably installed at the lower end of the inner cavity of the cylinder (132). The piston (133) is used to extract the gas between the suction cup (131) and the lens (12) through the cylinder (132), so that a negative pressure is generated between the suction cup (131) and the lens (12), thereby achieving a tighter adsorption.

3. The rapid mold-changing positioning device for a fiber laser cutting machine as described in claim 2, characterized in that: The rotating disassembly assembly (14) includes a fixed frame (141) fixedly installed outside the laser cutting machine body (11). A lower support frame (142) is fixedly installed at the lower end of the fixed frame (141). Three meshing gears (143) are rotatably installed at the lower end of the lower support frame (142). A bidirectional lead screw (144) is installed in the middle of the gears (143) on both sides. A fixed base plate (145) is rotatably installed at the upper end of the bidirectional lead screw (144) and fixedly connected to the lower surface of the suction cup (131). The fixed base plate (145) is used to drive the bidirectional lead screw (144) to rotate synchronously when the gears (143) rotate, thereby pulling the fixed base plate (145) downward and pulling the suction cup (131) and lens (12) that are adsorbed together out of the inner cavity of the laser cutting machine body (11) for replacement.

4. The rapid mold-changing positioning device for a fiber laser cutting machine as described in claim 3, characterized in that: A knob (146) is fixedly installed at the lower end of the gear (143) located in the middle. The knob (146) is used to drive the three gears (143) to rotate synchronously.

5. The rapid mold-changing positioning device for a fiber laser cutting machine as described in claim 4, characterized in that: The transverse component (22) includes T-shaped grooves (221) at both ends of the transverse plate (20). T-shaped slide rods (222) are slidably arranged in the T-shaped grooves (221) and fixedly connected to the middle of the lower end of the L-shaped support frame (21). Two T-shaped slide rods (222) are fixedly connected to opposite ends of each other and are used to push the L-shaped support frame (21) to the lower end of the fixed base plate (145) for support.

6. The rapid mold changing and positioning device for a fiber laser cutting machine as described in claim 5, characterized in that: The lower end of the T-shaped slide (221) is provided with a lower through groove (224). The width of the lower through groove (224) is smaller than the width of the lower end of the inner cavity of the T-shaped slide (221). A vertical insert (225) is slidably provided at the end of the inner cavity of the lower through groove (224) away from the compression spring (223) and is fixedly connected to the bottom surface of the lower support frame (142). The upper end of the vertical insert (225) is located on one side of the T-shaped slide rod (222) and the surface is set as an inclined surface (226). The inclined surface (226) is used to abut against the T-shaped slide rod (222) and push the L-shaped support frame (21) out of the lower end of the fixed base plate (145) to release the limit.

7. The rapid mold changing and positioning device for a fiber laser cutting machine as described in claim 6, characterized in that: The horizontal plate (20) is threaded to the upper end of the bidirectional lead screw (144). When the bidirectional lead screw (144) pushes the suction cup (131) upward, the horizontal plate (20) drives the L-shaped support frame (21) to move downward, so that the upper end of the L-shaped support frame (21) abuts against the lower end of the fixed base plate (145). The middle part of the horizontal plate (20) is fixedly connected to the lower end of the piston (133). When the horizontal plate (20) moves downward, it will drive the piston (133) to suck the gas between the suction cup (131) and the lens (12).

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