A laser cutting machine tool and its feeding and discharging structure

Abstract

The utility model provides a kind of feeding and discharging structure of laser cutting machine tool, including base plate, carousel assembly, feeding cylinder and receiving cylinder, carousel assembly is set on base plate, feeding cylinder and receiving cylinder are set above carousel assembly, the carousel assembly includes lower carousel body, lower carousel body is rotatably connected on base plate, and a plurality of workpiece clamps are ringed with equal intervals on lower carousel body;The feeding cylinder is fixed on base plate, and the receiving cylinder includes receiving cavity, and movable side extension block is inserted on the inner wall of receiving cavity, and one end of side extension block extends into receiving cavity;The carousel assembly further includes discharge jacking module, discharge jacking module is set below lower carousel body and corresponds with receiving cylinder upper and lower, for promoting finished product in workpiece clamp to enter into receiving cavity.Effective convenience of feeding and discharging and the efficiency of cutting processing are improved for the laser cutting machine tool with the feeding and discharging structure.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting machine tool technology, and in particular to a laser cutting machine tool and its loading and unloading structure. Background Technology

[0002] A laser cutting machine uses a laser to emit a laser beam. The laser beam is focused by a lens and refracted by a prism to form a light path. Finally, a beam scanning control system controls the laser's position on the workpiece surface, using a focused, high-power-density laser beam to ablate the workpiece. The laser beam ablates the workpiece material, bringing it to its melting or boiling point. Simultaneously, gas is supplied during cutting, blowing away debris or protecting the cut surface, such as preventing oxidation. As the beam scanning control system controls the laser beam's path, the workpiece is ultimately ablated into the desired shape. In laser processing, smaller workpieces are typically transferred using a suction nozzle. However, for workpieces that are difficult to pick up with a suction nozzle, manual handling with tweezers is still required for loading and unloading, resulting in lower production efficiency. Utility Model Content

[0003] In view of the above, it is necessary for this utility model to provide a laser cutting machine tool with high processing efficiency and capable of automatic loading and unloading.

[0004] The technical solution of this utility model is as follows:

[0005] A loading and unloading structure for a laser cutting machine tool includes a base plate, a turntable assembly, a loading cylinder, and a receiving cylinder. The turntable assembly is mounted on the base plate, and the loading cylinder and receiving cylinder are positioned above the turntable assembly. The turntable assembly includes a lower turntable body rotatably connected to the base plate, and a plurality of workpiece clamps are evenly spaced around the lower turntable body. The loading cylinder is fixed to the base plate, and the receiving cylinder includes a receiving cavity. A movable side extension block is inserted into the inner wall of the receiving cavity, with one end of the side extension block extending into the receiving cavity. The turntable assembly also includes an output lifting module, which is positioned below the lower turntable body and corresponds to the upper and lower parts of the receiving cylinder, for pushing the finished parts in the workpiece clamps into the receiving cavity.

[0006] Furthermore, the top surface of the base plate is provided with a groove, and the bottom surface of the groove is provided with a receiving groove for installing the discharge lifting module.

[0007] Furthermore, the turntable assembly also includes an upper turntable body, which is stacked on top of the lower turntable body at intervals, and a spring is sandwiched between the upper and lower turntable bodies. A screw sleeve is also provided at the top of the upper turntable body, and rotating the screw sleeve presses against the upper turntable body to adjust the distance between the upper and lower turntable bodies.

[0008] Furthermore, the workpiece fixture is provided with a clamping groove, and a plurality of elastic abutment rods are provided radially on the inner peripheral wall of the clamping groove.

[0009] Furthermore, the discharge lifting module includes a guide cylinder and a push block. The guide cylinder is fixed in a groove on the base plate, and the push block is slidably installed in the guide cylinder. The lower end of the push block is provided with a compression spring or cylinder to drive the push block to extend out of the top of the guide cylinder.

[0010] Furthermore, the feeding cylinder is equipped with a material storage component, and the lower end of the material storage cavity is equipped with a material distribution component to separate the workpieces at the bottom of the material storage cavity one by one.

[0011] Furthermore, the lower surface of the end of the side extension block that extends into the receiving cavity is provided with an inclined surface, so as to push the side extension block into the inner wall of the receiving cavity by abutting against the inclined surface.

[0012] Furthermore, the discharge lifting module includes a push block, the top of which is a cone shape, used by the workpiece clamp to press against the cone shape and push the push block downward.

[0013] In addition, this utility model also provides a laser cutting machine tool, including the above-mentioned loading and unloading structure, as well as a machine base and a laser cutting mechanism. The machine base includes a cross motion platform and a top table panel. The cross motion platform is installed on the top of the table panel. The loading and unloading mechanism is connected to the cross motion platform. The laser cutting mechanism is fixed on the top of the machine base and located above the cross motion platform.

[0014] Furthermore, the laser cutting mechanism includes a fixed frame, a light source, an optical path transmission system, and a beam scanning control system. The light source is mounted on the top of the fixed frame, the optical path transmission system is located beside the light source, and the beam scanning control system is installed at the laser beam emission end of the optical path transmission system to receive the laser beam transmitted by the optical path transmission system for cutting the workpiece.

[0015] Compared with existing technologies, the laser cutting machine tool provided by this utility model has the following advantages:

[0016] 1. By designing the feeding cylinder, receiving cylinder and turntable assembly to work together, the workpiece in the feeding cylinder automatically enters the workpiece fixture, and the lower turntable body drives the workpiece to complete the cutting and unloading, which greatly improves production efficiency.

[0017] 2. By designing an ejection port at the bottom of the storage cavity, a material distribution component is installed inside the ejection port. The material distribution component is inserted below the workpiece. When the workpiece pushes the material distribution component down into the workpiece fixture, the material distribution component releases its obstruction on the workpiece, allowing the workpiece to fall accurately into the workpiece fixture. Furthermore, when the workpiece fixture rotates, it pushes the material distribution component to lift the workpiece above, preventing the workpiece from being scratched when the upper turntable rotates.

[0018] 3. By inserting a movable side extension block into the inner wall of the receiving chamber, and setting the bottom surface of the end of the side extension block that extends into the receiving chamber as an inclined surface, the finished product is pushed into the inner wall of the receiving chamber when it rises, so that the finished product can be moved to the top of the side extension block and blocked from falling by the rebounding side extension block, thus realizing the automatic receiving and storage of finished products.

[0019] 4. By setting the top of the push block as a cone, the workpiece fixture can press against the cone and move downwards when it moves, pushing the push block downwards and causing the compression spring to store energy. When the next workpiece fixture moves to correspond with the push block, it can push the finished part in the workpiece fixture to be unloaded. Attached Figure Description

[0020] Figure 1 This is a perspective view of a laser cutting machine tool according to a preferred embodiment of the present invention;

[0021] Figure 2 This is a 3D view of the machine base;

[0022] Figure 3 A 3D view of the laser cutting mechanism;

[0023] Figure 4 A 3D view of the feeding assembly;

[0024] Figure 5 An exploded view of the feeding assembly;

[0025] Figure 6 This is a three-dimensional cross-sectional view of the feeding structure;

[0026] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0027] Figure 8 for Figure 6 Enlarged view of point B in the middle.

[0028] The annotations in the attached figures are explained as follows:

[0029] 1. Base; 11. Cross-shaped motion platform; 12. Frame; 13. Tabletop; 2. Laser cutting mechanism; 21. Fixing frame; 22. Light source; 23. Optical path transmission system; 24. Beam scanning control system; 3. Loading and unloading mechanism; 31. Base plate; 311. Accommodation hole; 32. Turntable assembly; 321. Lower turntable body; 3211. Fixture slot; 322. Workpiece fixture; 3221. Clamping slot; 3222. Support rod; 323. Upper turntable body; 324. Spring; 325. Screw sleeve; 35. Discharge lifting module; 351. Guide cylinder; 352. Push block; 33. Loading cylinder; 331. Storage cavity; 3311. Pushing port; 332. Material distribution component; 34. Receiving cylinder; 341. Receiving cavity; 342. Side extension block. Detailed Implementation

[0030] 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. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0031] Please see Figures 1-2 A laser cutting machine tool includes a base 1, a laser cutting mechanism 2, and a loading and unloading mechanism 3. The base 1 is placed on the ground and includes a seat body 12 and a cross motion platform 11 placed on the top surface of the seat body 12. The laser cutting mechanism 2 is erected on the top surface of the seat body 12 and is used to project a laser beam to irradiate the cross motion platform 11 and perform laser cutting on the workpiece mounted on the cross motion platform 11.

[0032] Please see Figure 4 The loading and unloading mechanism 3 includes a base plate 31, a turntable assembly 32, a loading cylinder 33, and a receiving cylinder 34. The base plate 31 is installed on the top surface of the cross motion platform 11. The turntable assembly 32 is rotatably installed on the base plate 31. The loading cylinder 33 and the receiving cylinder 34 are both fixedly installed above the turntable assembly 32 and are used to store the workpiece to be processed and collect the finished workpiece after processing, respectively. The workpiece to be processed falls into the loading cylinder 33 through the rotation of the turntable assembly 32. The turntable assembly 32 drives the workpiece to be processed to rotate to the area below the laser cutting mechanism 2 for cutting, cutting the workpiece into a finished workpiece. The turntable assembly 32 drives the finished workpiece to move to the area below the receiving cylinder 34 so that the finished workpiece can enter the receiving cylinder 34 for storage.

[0033] See again Figure 2 The base 1 further includes a table panel 13 mounted on top of the base body 12. The table panel 13 is fixed to the top of the base body 12 by bolts for mounting the cross motion platform 11 and the laser cutting mechanism 2. Specifically, the table panel 13 is made of marble slab to prevent the table panel 13 from deforming due to heat.

[0034] Please see Figure 3The laser cutting mechanism 2 includes a fixed frame 21, a light source 22, an optical path transmission system 23, and a beam scanning control system 24. The fixed frame 21 has a gantry structure and is mounted on the table panel 13. The fixed frame 21 is also made of marble. The light source 22 is mounted at the top of the fixed frame 21. The optical path transmission system 23 is located beside the light source 22. The laser beam emitted from the light source 22 enters the optical path transmission system 23. The optical path transmission system 23 is equipped with beam processing devices, such as refracting mirrors and focusing mirrors. The beam scanning control system 24 is installed at the laser beam emission end of the optical path transmission system 23, receives the laser beam, and controls the laser beam to irradiate the surface of the workpiece below for cutting.

[0035] See Figures 4 to 8 The base plate 31 has a circular groove on its top surface, and the turntable assembly 32 is disposed in the groove. A motor (not shown) is located at the center of the bottom surface of the base plate 31. The rotation shaft of the motor is connected to the center of the turntable assembly 32, and the rotation of the motor drives the turntable assembly 32 to rotate within the groove. The turntable assembly 32 includes a lower turntable body 321, a workpiece fixture 322, and an upper turntable body 323. The lower turntable body 321 has a shaft hole at its center, which is fitted to the rotation shaft of the motor, allowing it to rotate together with the rotation shaft. Several fixture slots 3211 are equally spaced along an arc, so that the workpiece fixtures 322 can be fixed in the fixture slots 3211 one by one. By driving the lower turntable body 321 to rotate, the workpiece fixtures 322 can rotate at equal angles (for example, if there are four workpiece fixtures 322, the motor drives the lower turntable body 321 to rotate 90° each time, which can rotate to four positions). The lower turntable 321 rotates, causing the workpiece to rotate to the area below the beam scanning control system 24. When the workpiece is laser-processed, the beam scanning control system 24 controls the laser beam to cut the workpiece.

[0036] The upper turntable 323 is mounted on the rotating shaft of the motor and rotates together with the rotating shaft. The upper turntable 323 is flat against the top surface of the workpiece clamp 322 and works in conjunction with the lower turntable 321 to clamp the workpiece clamp 322. The turntable assembly 32 also includes a spring 324 disposed between the lower turntable 321 and the upper turntable 323. The spring 324 is mounted on the rotating shaft of the motor, and its two ends abut against the lower turntable 321 and the upper turntable 323, respectively. The top end of the rotating shaft is provided with a threaded sleeve 325, which presses against the top surface of the upper turntable 323. By adjusting the rise and fall of the threaded sleeve 325 on the rotating shaft, the distance between the upper turntable 323 and the lower turntable 321 can be adjusted, making it convenient for workpiece clamps 322 of different heights to be installed into the clamping slot 3211.

[0037] In this embodiment, the turntable assembly 32 is provided with four stations, namely, loading station, inspection station, processing station, and unloading station. Specifically, each workpiece fixture 322 is provided with a clamping groove 3221. Multiple sets of elastic abutment rods 3222 are radially arranged on the inner peripheral wall of the clamping groove 3221. The abutment rods 3222 can extend and retract toward the center of the clamping groove 3221 to clamp the workpiece after it is installed into the clamping groove 3221.

[0038] Furthermore, the loading and unloading mechanism 3 includes a discharge lifting module 35 for discharging finished parts (laser-cut workpieces). A receiving hole 311 is provided on the bottom surface of the groove of the base plate 31, and the receiving hole 311 corresponds to the unloading station. The discharge lifting module 35 is installed within the receiving hole 311. The discharge lifting module 35 includes a guide cylinder 351, a push block 352, and a compression spring. The guide cylinder 351 is installed within the receiving hole 311, the push block 352 is slidably installed within the guide cylinder 351, and the compression spring is installed at the bottom end of the guide cylinder 351 and pushes the push block 352 upwards. The upper end of the push block 352 is a cone shape, extending beyond the top surface of the guide cylinder 351.

[0039] Please see Figure 5 , Figure 6 The feeding cylinder 33 is fixed on the base plate 31 and located above the turntable assembly 32, corresponding to the feeding station, so as to allow the workpiece clamp 322 of the feeding station to drop the workpiece. The feeding cylinder 33 is provided with a storage cavity 331 for storing workpieces. The workpiece is placed in the storage cavity 331. When the turntable assembly 32 rotates to the feeding station corresponding to the storage cavity 331, the workpiece in the storage cavity 331 falls into the clamping groove 3221 of the corresponding workpiece clamp 322.

[0040] Understandably, the bottom of the storage cavity 331 is provided with a material distribution structure to separate the workpieces in the storage cavity 331 one by one at the bottom, so that individual workpieces can flow into the clamping groove 3221 of the workpiece fixture 322. The material distribution structure can adopt a conventional structure in the industry, which will not be described in detail here. It can be set according to the shape of the workpiece. For example, the bottom of the feeding cylinder 33 can be set as a bottom wall, and an ejection port 3311 can be opened on the peripheral wall flush with the bottom wall. The bottom of the feeding cylinder 33 is provided with a pusher 332 corresponding to the ejection port 3311, so as to push out the workpieces on the bottom surface of the storage cavity 331 one by one and let them fall into the clamping groove 3221 of the workpiece fixture 322. Alternatively, a dropping plate can be provided at the bottom of the feeding cylinder 33, which can be closed when not dropping and opened when dropping is required. Preferably, the dropping plate is an inclined plate, which is convenient for separating adjacent workpieces. When the turntable assembly 32 rotates to the loading station, the storage cavity 331 of the loading cylinder 33 corresponds to the clamping groove 3221 of the workpiece fixture 322, and the workpiece in the storage cavity 331 is divided into the clamping groove 3221 by the material distribution structure.

[0041] The receiving cylinder 34 is fixed on the base plate 31 and corresponds vertically to the workpiece clamp 322 at the unloading position. The receiving cylinder 34 has a receiving cavity 341 for receiving materials. The lower end of the receiving cavity 341 is provided with a radially elastic side extension block 342. One end of the side extension block 342 extends into the receiving cavity 341, and the other end is connected to an elastic element and accommodated in a cavity on the inner wall of the receiving cavity 341. The bottom surface of the end of the side extension block 342 that extends into the receiving cavity 341 is set as an inclined surface so that the finished part can rise and push the side extension block 342. Specifically, when the receiving chamber 341 is engaged with the discharge lifting module 35, the workpiece clamp 322 drives the finished part to rotate so that it corresponds vertically with the receiving cylinder 34. The upper end of the push block 352 of the discharge lifting module 323 slides upward and holds the finished part held by the workpiece clamp 322, pushing the finished part into the receiving cylinder 34. The finished part rises and pushes the side extension block 342 to move laterally. The side extension block 342 retracts into the cavity of the inner wall of the receiving chamber 341. When the finished part rises and is no longer held by the side extension block 342, the side extension block 342 re-extends into the receiving chamber 341. The top surface of the side extension block 342 supports the finished part, thus completing the collection of the finished part. Next, the push block 352 moves down and retracts into the guide cylinder 351. In this embodiment, the push block 352 can be pushed down by the workpiece clamp 322 pressing against the outer peripheral surface of the conical body. It can be understood that the push block 352 can be pulled back by the cylinder or pressed back to its original position by the linkage structure under the rotation of the lower turntable 321.

[0042] When using this laser cutting machine, the worker stores the workpiece in the storage cavity 331 of the loading cylinder 33. The workpiece at the bottom falls into the clamping slot 3221 of the workpiece clamp 322. The motor drives the turntable assembly 32 to rotate 90° to the detection position to perform positioning detection on the workpiece before laser processing. At the same time, the workpiece clamp 322 at the loading position can continue to perform loading action. The turntable assembly 32 rotates another 90°, and the workpiece at the detection position will rotate to the processing position. The laser cutting mechanism 2 processes the workpiece into a finished part. Then the turntable assembly 32 rotates to the unloading position. The push block 352 of the unloading lifting module 35 rises and pushes the finished part into the receiving cylinder 34 for storage. Then the turntable assembly 32 rotates to the loading position again and repeats the above actions.

[0043] In summary, the loading and unloading structure of the laser cutting machine tool provided by this utility model, through the design of the loading cylinder 33, the receiving cylinder 34 and the turntable assembly 32 cooperating, the workpiece in the loading cylinder 33 automatically enters the workpiece clamp 322, and the lower turntable body 321 drives the workpiece to complete the cutting and unloading, which greatly improves the production efficiency.

[0044] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A loading and unloading structure for a laser cutting machine tool, comprising a base plate (31), a turntable assembly (32), a loading cylinder (33), and a receiving cylinder (34), wherein the turntable assembly (32) is rotatably mounted on the base plate (31), and the loading cylinder (33) and the receiving cylinder (34) are mounted above the turntable assembly (32), characterized in that: The turntable assembly (32) includes a lower turntable body (321), which is rotatably connected to the base plate (31). A plurality of workpiece clamps (322) are arranged in a ring at equal intervals on the lower turntable body (321). The upper feed cylinder (33) is fixed on the base plate (31). The receiving cylinder (34) includes a receiving cavity (341). A movable side extension block (342) is inserted into the inner wall of the receiving cavity (341). One end of the side extension block (342) extends into the receiving cavity (341). The turntable assembly (32) also includes a discharge lifting module (35), which is located below the lower turntable body (321) and corresponds to the upper and lower parts of the receiving cylinder (34). It is used to push the finished parts in the workpiece clamps (322) into the receiving cavity (341).

2. The loading and unloading structure according to claim 1, characterized in that: The base plate (31) has a groove on its top surface and a receiving groove (311) on the bottom surface of the groove for installing the discharge lifting module (35).

3. The loading and unloading structure according to claim 1, characterized in that: The turntable assembly (32) also includes an upper turntable body (323), which is stacked on top of the lower turntable body (321) at intervals. A spring (324) is sandwiched between the upper turntable body (323) and the lower turntable body (321). A screw sleeve (325) is also provided at the top of the upper turntable body (323). Rotating the screw sleeve presses against the upper turntable body (323) to adjust the distance between it and the lower turntable body (321).

4. The loading and unloading structure according to claim 3, characterized in that: The workpiece fixture (322) is provided with a clamping groove (3221), and a plurality of elastic abutment rods (3222) are provided radially on the inner peripheral wall of the clamping groove (3221).

5. The loading and unloading structure according to claim 2, characterized in that: The discharge lifting module (35) includes a guide cylinder (351) and a push block (352). The guide cylinder (351) is fixed in a groove on the base plate (31). The push block (352) is slidably installed in the guide cylinder (351). The lower end of the push block (352) is provided with a compression spring or cylinder to drive the push block (352) to extend out of the top of the guide cylinder (351).

6. The loading and unloading structure according to claim 1, characterized in that: The feeding cylinder (33) is provided with a storage cavity (331), and the lower end of the storage cavity (331) is provided with a material separating component (332) to separate the workpieces at the bottom of the storage cavity (331) one by one.

7. The loading and unloading structure according to claim 1, characterized in that: The lower surface of the end of the side extension block (342) that extends into the receiving cavity (341) is provided with an inclined surface, so as to push the side extension block (342) into the inner wall of the receiving cavity (341) by abutting against the inclined surface.

8. The loading and unloading structure according to claim 1, characterized in that: The discharge lifting module (35) includes a push block (352), the top of which is a cone shape, which is used by the workpiece clamp (322) to press against the cone shape and push the push block (352) downward.

9. A laser cutting machine tool, characterized in that: The system includes the loading and unloading structure described in any one of claims 1-8, as well as a base (1) and a laser cutting mechanism (2). The base (1) includes a cross motion platform (11) and a top table panel (13). The cross motion platform (11) is mounted on the top of the table panel (13). The loading and unloading mechanism (3) is connected to the cross motion platform (11). The laser cutting mechanism (2) is fixed on the top of the base (1) and located above the cross motion platform (11).

10. A laser cutting machine tool according to claim 9, characterized in that: The laser cutting mechanism (2) includes a fixed frame (21), a light source (22), an optical path transmission system (23), and a beam scanning control system (24). The light source (22) is installed on the top of the fixed frame (21), the optical path transmission system (23) is located on the side of the light source (22), and the beam scanning control system (24) is installed at the laser beam emission end of the optical path transmission system (23) to receive the laser beam transmitted by the optical path transmission system (23) for cutting the workpiece.

Images