Laser cutting device for metal casting machining and cutting method

Abstract

The invention discloses a laser cutting device for metal casting machining and a cutting method, and relates to the technical field of laser cutting. A rotating frame; a cutting mechanism; a discharging mechanism; the multiple clamping mechanisms are arranged on the clamping disc and used for clamping the inner wall of the casting; and a supporting mechanism. Through intermittent rotation of the rotating frame, the rotating frame can be matched with the clamping mechanism and the discharging mechanism in the rotating process, castings on the material frame can be clamped by the clamping mechanism and conveyed to a cutting station, after cutting is completed, the clamping mechanism relieves clamping, discharging of the castings is achieved, automatic feeding and discharging are achieved, and the cutting efficiency is improved; and meanwhile, the rotating power of the rotating frame can drive the supporting mechanism to rotate between the cutting station and the discharging station in a reciprocating mode, supporting discharging of the cut castings is achieved, meanwhile, avoiding of another casting conveyed to the cutting station is achieved, and the problems of interference and unevenness of the cutting face are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting, and in particular to a laser cutting device and a cutting method for metal casting processing. Background Art

[0002] Laser cutting is a technology that uses a high-power density laser beam to accurately cut materials. Laser cutting achieves the purpose of cutting by irradiating the surface of the material with a focused laser beam, causing it to quickly melt, vaporize or reach the ignition point. At the same time, a high-speed airflow coaxial with the beam blows away the melted or vaporized material.

[0003] For example, the publication number is CN220217165U, and the name is: "A Metal Pipe Cutting Machine", which includes a base and a cutting seat, a driving seat is provided on the base, a clamping seat is provided on the cutting seat, and a laser cutter is provided on the cutting seat, a mounting structure is provided on the cutting seat, and a controller is connected to the mounting structure, and the mounting structure includes a slide rail, a sliding seat and a detachable component, the slide rail is fixed on the cutting seat, and the detachable component is installed on the slide rail through the sliding seat. By setting up the mounting structure, using structures such as slide rails and sliding seats, the height of the controller can be adjusted so that the height of the controller is adapted to the height of the staff, which improves the flexibility of use. The detachable components are used to install the controller. During the use of the controller, the controller can be adjusted to be tilted for use, which further improves the flexibility of use. At the same time, the controller can be quickly disassembled, which is convenient for maintenance work and saves time and effort.

[0004] The shortcomings of the prior art, such as those included in the above-mentioned patents, are as follows: 1. During the laser cutting operation, it is usually necessary to manually take the casting and place it on the laser cutting station, and after the laser cutting operation is completed, the cut casting is manually removed, which greatly reduces the cutting efficiency; 2. When the cut casting lacks a supporting structure, when the casting is about to be cut off, the cut part of the casting will fall downward due to the action of gravity, causing a break between the part and the casting body, or deformation, resulting in an uneven cutting surface. Summary of the invention

[0005] The purpose of the present invention is to provide a laser cutting device and a cutting method for metal casting processing to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a laser cutting device for metal casting processing, comprising:

[0007] frame;

[0008] The rotating frame includes a clamping plate and a supporting plate intermittently connected to the frame, a rotating shaft is fixedly connected between the clamping plate and the supporting plate, and a plurality of supporting grooves are provided on the supporting plate;

[0009] A cutting mechanism, which is fixedly connected to the frame;

[0010] The unloading mechanism comprises a material rack fixedly connected to the frame, on which a plurality of castings are arranged, and each casting is sequentially separated from the material rack and abuts against each supporting groove;

[0011] A plurality of clamping mechanisms, which are arranged on the clamping plate and are used to clamp the inner wall of the casting;

[0012] The supporting mechanism comprises a supporting plate which is reciprocatingly connected to the frame, and the supporting plate is in abutment with the casting.

[0013] Furthermore, each clamping mechanism includes a rotating rod fixedly connected to the clamping plate, a worm wheel fixedly connected to the rotating rod, a worm screw rotatably connected to the clamping plate, a first gear fixedly connected to the worm screw, a first rack and a second rack fixedly connected to the frame, the first gear respectively meshing with the first rack and the second rack, a rotating plate fixedly connected to the rotating rod, a plurality of through grooves are provided on the rotating plate, a sliding rod is slidably connected to the clamping plate, an abutting rod is fixedly connected to the sliding rod, an extension groove slidably abutted with the abutting rod is provided on the rotating rod, a fixed plate is fixedly connected to the sliding rod, a straight groove corresponding to each through groove is provided on the fixed plate, and a clamping rod is slidably abutted between the straight groove and the through groove corresponding to the straight groove.

[0014] Furthermore, the extension groove is composed of an inclined groove and a peripheral groove connected to each other.

[0015] Furthermore, the through groove is composed of an arc segment and a straight segment connected to each other.

[0016] Furthermore, the unloading mechanism also includes a baffle slidably connected to the material rack, a cross bar is fixedly connected to the baffle, a slider is slidably connected to the frame, the slider is abutted against the clamping plate, a descending groove is opened on the slider, the descending groove is slidably abutted against the cross bar, and a first spring is arranged between the slider and the frame.

[0017] Furthermore, the support mechanism also includes a base rotatably connected to the frame, a support plate slidably connected in the base, an elastic telescopic rod is arranged on the support plate, a second spring is arranged between the support plate and the inner wall of the base, a fixed plate is fixedly connected to the frame, a reciprocating groove is opened on the fixed plate, and the end of the elastic telescopic rod is slidably abutted against the reciprocating groove.

[0018] Furthermore, the reciprocating groove is composed of a first section, a second section and a third section connected to each other, and the first section and the third section have the same depth, the second section has a greater depth than the first section, and a slope is provided at the connection position between the third section and the second section.

[0019] Furthermore, the elastic telescopic rod comprises a sleeve fixedly connected to the base, a retractable rod is slidably connected in the sleeve, and a third spring is arranged between the retractable rod and the sleeve.

[0020] Furthermore, it also includes a driving mechanism, which includes an intermittent disk fixedly connected to the supporting disk, a plurality of intermittent grooves being provided on the intermittent disk, a plurality of limit plates being fixedly connected to the intermittent disk, a driving member being rotatably connected to the frame, one end of the driving member being rotatably engaged with each limit plate, and the other end being fixedly connected to a lever, the lever being slidably abuttingly engaged with each intermittent groove, a second gear being fixedly connected to the rotating shaft, a third gear being rotatably connected to the frame, a plurality of reciprocating rods being fixedly connected to the second gear and the third gear, a fourth gear being fixedly connected to the base, and each reciprocating rod being rotatably abuttingly engaged with a tooth gap of the fourth gear.

[0021] A cutting method, wherein the cutting is performed using the laser cutting device for metal casting processing as described above, and is characterized in that the method comprises the following steps:

[0022] Step 1: Place the casting to be laser cut on the rack;

[0023] Step 2: rotate the driving member. The power of the driving member drives the rotating frame to rotate intermittently on the one hand, and drives the base to rotate back and forth between the cutting station and the unloading station on the other hand; the intermittent rotation of the rotating frame cooperates with the unloading mechanism, so that one of the castings on the material rack rolls into the support groove. At the same time, the clamping mechanism clamps the end of the casting. As the rotating frame rotates, the casting is driven to be located at the cutting station and the unloading station in sequence; when the casting is at the cutting station and in the process of rotating from the cutting station to the unloading station, the support plate always supports the cut casting. When the casting is at the unloading station, the clamping mechanism passively releases the clamping of the casting. Subsequently, the base rotates and resets from the unloading station to the cutting station, and during the rotation and reset process, the support plate first retracts and then extends out in the base to support the next casting located at the cutting station again.

[0024] Step 3: Repeat steps 1 and 2 above.

[0025] In the above technical scheme, the present invention provides a laser cutting device and cutting method for metal casting processing: through the intermittent rotation of the rotating frame, it can cooperate with the clamping mechanism and the unloading mechanism during its rotation, so that the casting on the material rack can be clamped by the clamping mechanism and conveyed to the cutting station. After the cutting is completed, the clamping mechanism releases the clamping to realize the unloading of the casting, realizes automatic loading and unloading, and improves the cutting efficiency; at the same time, the power of the rotation of the rotating frame can drive the supporting mechanism to reciprocate between the cutting station and the unloading station, realize the support unloading of the casting that has been cut, and realize the avoidance of another casting conveyed to the cutting station, thereby avoiding interference and the problem of uneven cutting surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the overall structure of a clamping disk from a side perspective provided by an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the support plate and the driving mechanism structure provided by an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the structure of a clamping plate and a clamping mechanism provided in an embodiment of the present invention;

[0031] Figure 5 A schematic diagram of the structure of a clamping mechanism provided in an embodiment of the present invention;

[0032] Figure 6 A schematic diagram of the supporting mechanism and driving mechanism provided in an embodiment of the present invention;

[0033] Figure 7 A schematic diagram of the support mechanism and the driving mechanism structure from another angle provided by an embodiment of the present invention;

[0034] Figure 8 A schematic diagram of the structure of a fixing plate provided in an embodiment of the present invention;

[0035] Fig. 9 A schematic diagram of the structure of a driving mechanism provided in an embodiment of the present invention;

[0036] Fig.10A schematic diagram of the overall structure of a support plate from one side perspective provided in an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 1. Frame; 2. Rotating frame; 21. Clamping plate; 22. Support plate; 221. Support groove; 23. Rotating shaft; 3. Cutting mechanism; 4. Unloading mechanism; 41. Material rack; 42. Baffle; 43. Cross bar; 44. Slide plate; 441. Descending groove; 45. First spring; 5. Clamping mechanism; 51. Rotating rod; 511. Inclined groove; 512. Surface groove; 52. Worm wheel; 53. Worm; 54. First gear; 55. First rack; 56. Second rack; 57. Rotating plate; 571. Arc segment; 572. Straight segment; 58. Sliding rod ; 581, abutment rod; 59, fixed disk; 510, clamping rod; 6, supporting mechanism; 61, base; 62, supporting plate; 63, elastic telescopic rod; 631, sleeve; 632, retracting rod; 633, third spring; 64, second spring; 65, fixed plate; 651, first section; 652, second section; 653, third section; 7, driving mechanism; 71, intermittent disk; 72, intermittent groove; 73, limit plate; 74, driving member; 75, shift rod; 76, second gear; 77, third gear; 78, reciprocating rod; 79, fourth gear. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] See also Figure 1-10 The laser cutting device for metal casting processing provided by the embodiment of the present invention comprises: a frame 1; a rotating frame 2, which comprises a clamping plate 21 and a supporting plate 22 connected to the frame 1 in an intermittent rotation manner, a rotating shaft 23 is fixedly connected between the clamping plate 21 and the supporting plate 22, and a plurality of supporting grooves 221 are formed on the supporting plate 22; the shape of the supporting grooves 221 is as follows Fig.10 As shown, the support groove 221 has a support plane. When located at the loading station, the support plane is horizontal, which is convenient for receiving the casting. When located at the unloading station, the mouth of the support groove 221 is facing downward as a whole, which is convenient for unloading the casting. The cutting mechanism 3 is fixedly connected to the frame 1. The cutting mechanism 3 is a prior art, and its structure adopts the existing structure, which will not be elaborated here.

[0041] like Figure 2 , Fig.10 As shown, during the rotation process, the rotating frame 2 has a loading station, a cutting station and an unloading station in sequence; the loading station is located close to the material rack 41, the cutting station is located below the cutting mechanism 3, and the unloading station is located away from the material rack 41.

[0042] In the embodiment of the present invention: the unloading mechanism 4, which cooperates with the rotating frame 2 to passively unload the material gradually; it includes a material rack 41 fixedly connected to the frame 1, specifically, the material rack 41 is inclined, and the end close to the rotating frame 2 is lower than the other end, so that the casting can roll toward the rotating frame 2; a plurality of castings are arranged on the material rack 41, and each casting is detached from the material rack 41 in turn, and is in close contact with each supporting groove 221; the unloading mechanism 4 also includes a baffle 42 slidably connected to the material rack 41, a cross bar 43 is fixedly connected to the baffle 42, a slide plate 44 is slidably connected to the frame 1, the slide plate 44 is in abutment with the clamping disk 21, a descending groove 441 is provided on the slide plate 44, the descending groove 441 is in slidable contact with the cross bar 43, and a first spring 45 is arranged between the slide plate 44 and the frame 1; the first spring 45 is a compression spring.

[0043] The working principle of the material feeding mechanism 4 is as follows: Figure 2 As shown in the figure, the clamping plate 21 is triangular in shape. During the rotation of the rotating frame 2, the three corners are respectively in contact with the slide plate 44. Each contact causes the slide plate 44 to slide horizontally on the frame 1 and squeeze the first spring 45 to shorten the length of the first spring 45. Through the movement of the slide plate 44 and the cooperation between the descending groove 441 and the cross bar 43, the cross bar 43 can drive the baffle plate 42 to move vertically downward. After the movement, the baffle plate 42 is released from the contact state with the casting, so that the casting rolls from the material rack 41 to the rotating frame 2. During the rolling process of the casting, the rotating frame 2 continues to rotate. As the rotation proceeds, the clamping plate 21 disengages from the slide plate 44, and under the elastic force of the first spring 45, the baffle 42 is driven to move vertically upward to block the other casting; the rotation of the rotating frame 2 makes the mouth of the support groove 221 align with the end of the material rack 41, and then remains stationary, waiting for the casting to roll into the support groove 221, until the next time the rotating frame 2 is driven to rotate intermittently, the rotating frame 2 drives the casting to rotate synchronously, so that the casting rotates toward the cutting station.

[0044] In the embodiment of the present invention: a plurality of clamping mechanisms 5 are arranged on the clamping plate 21 for clamping the inner wall of the casting; specifically, each clamping mechanism 5 comprises a rotating rod 51 fixedly connected to the clamping plate 21, a worm wheel 52 is fixedly connected to the rotating rod 51, a worm 53 is rotatably connected to the clamping plate 21, a first gear 54 is fixedly connected to the worm 53, a first rack 55 and a second rack 56 are fixedly connected to the frame 1; the teeth of the first rack 55 and the second rack 56 are in opposite directions; the first gear 54 is meshed with the first rack 55 and the second rack 56 respectively, a rotating plate 57 is fixedly connected to the rotating rod 51, and a plurality of through grooves are provided on the rotating plate 57; specifically, the through grooves are composed of an arc segment 571 and a straight segment 572. The segments 572 are connected; the arc segment 571 is opened around the axis of the rotating disk 57; the sliding rod 58 is slidably connected to the clamping disk 21; wherein the sliding rod 58 slides along the axial direction of the rotating rod 51; the sliding rod 58 is fixedly connected to the abutment rod 581, and the rotating rod 51 is provided with an extension groove that slidably abuts the abutment rod 581; specifically, the extension groove is composed of an inclined groove 511 and a circumferential groove 512 connected; the sliding rod 58 is fixedly connected to the fixed disk 59, and the fixed disk 59 is provided with straight grooves 591 corresponding to each through groove, and a clamping rod 510 is slidably abutted between the straight groove 591 and the corresponding through groove; wherein the clamping rod 510 is L-shaped, and a slider is fixedly connected to the clamping rod 510, and the slider is slidably connected in the straight groove 591.

[0045] The principle of the clamping mechanism 5 is as follows: during the rotation of the rotating frame 2, the clamping mechanism 5 is driven to rotate synchronously. During the rotation, the first gear 54 will passively engage with the first rack 55 and the second rack 56, so that the first gear 54 rotates along the first direction and the second direction. The first gear 54 rotates, driving the worm 53, the worm wheel 52, the rotating rod 51, and the rotating disk 57 to rotate synchronously. During the rotation, the rotating rod 51 has an insertion stroke for inserting into the interior of the casting and a clamping stroke for clamping and fixing the inner wall of the casting.

[0046] During the insertion stroke: the rotating rod 51 and the rotating disk 57 rotate synchronously, and through the cooperation of the inclined groove 511 and the abutment rod 581, the sliding rod 58, the fixed disk 59, and the clamping rod 510 are driven to slide along the axial direction of the rotating rod 51, so that the fixed disk 59 and the clamping rod 510 are inserted into the interior of the casting; it is worth mentioning that during the rotation of the rotating disk 57, the clamping rod 510 is driven to slide from the arc section 571 into the straight section 572, so that the position of the clamping rod 510 remains stationary relative to the fixed disk 59.

[0047] During the clamping stroke: immediately after being inserted into the casting, the rotating rod 51 and the rotating disk 57 continue to rotate, so that the abutment rod 581 slides from the inclined groove 511 into the circumferential groove 512, that is, the sliding rod 58 and the fixed disk 59 maintain this position and are in a static state, and the rotating disk 57 rotates at this time, and due to the cooperation between the straight section 572 and the clamping rod 510 and the straight groove 591, each clamping rod 510 is driven to slide in the straight groove 591 respectively, so that each clamping rod 510 moves away from each other to clamp the inner wall of the casting.

[0048] In an embodiment of the present invention: a support mechanism 6 comprises a support plate 62 reciprocatingly connected to the frame 1, the support plate 62 abutting against the casting; specifically, the support mechanism 6 also comprises a base 61 rotatably connected to the frame 1, the support plate 62 is slidably connected in the base 61, and an elastic telescopic rod 63 is arranged on the support plate 62; specifically, the elastic telescopic rod 63 comprises a sleeve 631 fixedly connected to the base 61, a contraction rod 632 is slidably connected in the sleeve 631, and a third spring 633 is arranged between the contraction rod 632 and the sleeve 631; a second spring 64 is arranged between the support plate 62 and the inner wall of the base 61, a fixed plate 65 is fixedly connected to the frame 1, a reciprocating groove is provided on the fixed plate 65, and the end of the elastic telescopic rod 63 is slidably abutting against the reciprocating groove; wherein, as Figure 8 As shown, the reciprocating groove is composed of a first section 651, a second section 652 and a third section 653 connected to each other, and the depths of the first section 651 and the third section 653 are the same, the depth of the second section 652 is greater than that of the first section 651, and a slope is provided at the connecting position between the third section 653 and the second section 652.

[0049] The principle of the supporting mechanism 6 is as follows: the base 61 reciprocates between the cutting station and the unloading station. Figure 7As shown, the support mechanism 6 supports the casting at the cutting station. After the cutting is completed, the rotating frame 2 rotates intermittently by 120 degrees, and the base 61 follows the rotating frame 2 to rotate to the unloading station, so that the cut casting can be unloaded; it can be understood that the base 61 does not have to rotate 120 degrees, and its rotation angle is only required to allow the cut casting to fall; in the process of following the rotation, the base 61, the support plate 62, and the elastic telescopic rod 63 rotate synchronously, and the elastic telescopic rod 63 slides from the first section 651 into the second section 652, and the support plate 62 always supports the casting; then, the base 61 rotates in the opposite direction and resets from the unloading station to the cutting station, so that the support plate 62 can rotate to the next cutting station after being reset. The base 61 supports the casting at the cutting station. When the base 61 is rotating and resetting, the elastic telescopic rod 63 slides from the end of the second section 652 to the junction of the second section 652 and the third section 653. Since the depth of the second section 652 is greater than that of the first section 651, the elastic telescopic rod 63 cannot slide to the first section 651, but slides into the third section 653 through the action of the slope, and then slides into the first section 651 from the third section 653, so that the support plate 62 is first retracted into the base 61 and then extends out. The purpose of doing so is to avoid interference between the support plate 62 and the next casting located at the cutting station, so that the support plate 62 can avoid the next casting located at the cutting station and then support the next casting.

[0050] In the embodiment of the present invention, a driving mechanism 7 is also included, and its functions are: 1. driving the rotating frame 2 to rotate intermittently in the same direction; 2. driving the base 61 to rotate back and forth between the cutting station and the unloading station; it includes an intermittent disk 71 fixedly connected to the support disk 22, a plurality of intermittent grooves 72 are provided on the intermittent disk 71, a plurality of limit plates 73 are fixedly connected to the intermittent disk 71, and a driving member 74 is rotatably connected to the frame 1; Figure 3 As shown, the rotation axis of the driving member 74 is located in the middle of its length direction; one end of the driving member 74 is rotatably matched with each limit plate 73, as shown in FIG. Figure 3 As shown, the driving member 74 has an arc surface that cooperates with the limit plate 73; the other end is fixedly connected to a lever 75, and the lever 75 slides and abuts with each intermittent groove 72; a second gear 76 is fixedly connected to the rotating shaft 23, and a third gear 77 is rotatably connected to the frame 1; a plurality of reciprocating rods 78 are fixedly connected to the second gear 76 and the third gear 77; a fourth gear 79 is fixedly connected to the base 61, and each reciprocating rod 78 is rotatably abutted with the tooth gap of the fourth gear 79.

[0051] Those skilled in the art will appreciate that the rotation angle of the fourth gear 79 can be adjusted by adjusting the positions of the reciprocating rod 78 on the second gear 76 and the third gear 77, respectively, and the gear ratio, which will not be elaborated herein.

[0052] In the embodiment of the present invention, a driving source for driving the driving member 74 is further included, and an output shaft of the driving source is coaxially fixedly connected with the driving member 74 .

[0053] The principle of the driving mechanism 7 is as follows: the driving member 74 rotates, driving the lever 75 to slide and abut against one of the intermittent grooves 72. When the lever 75 moves from one end of the intermittent groove 72 to the other end, the intermittent disk 71 rotates 60 degrees. As the driving member 74 continues to rotate, the lever 75 returns from the end of the intermittent groove 72 and moves out of the intermittent groove 72. This process causes the intermittent disk 71 to rotate 60 degrees again, that is, the intermittent disk 71 rotates 120 degrees intermittently. Since the intermittent disk 71 is fixedly connected to the support disk 22, and the support disk 22 is also fixedly connected to the rotating shaft 23, the rotating shaft 23 also rotates intermittently. When the rotating shaft 23 rotates, it drives the second gear 76 to rotate synchronously. Fig. 9 As shown, at this time, the second gear 76 rotates counterclockwise along its own axis, and through the meshing action with the third gear 77, drives the third gear 77 to rotate clockwise, so that the reciprocating rods 78 on the third gear 77 move the fourth gear 79, thereby driving the fourth gear 79 and the base 61 to rotate. Similarly, the reciprocating rods 78 on the second gear 76 move the fourth gear 79, which can drive the fourth gear 79 and the base 61 to reverse and reset.

[0054] A cutting method, wherein the cutting is performed using the laser cutting device for metal casting processing as described above, comprising the following steps:

[0055] Step 1: placing the casting to be laser cut on the rack 41;

[0056] Step 2: Make the driving member 74 rotate. The power of the driving member 74 drives the rotating frame 2 to rotate intermittently on the one hand, and drives the base 61 to rotate back and forth between the cutting station and the unloading station on the other hand; the intermittent rotation of the rotating frame 2 cooperates with the unloading mechanism 4, so that one of the castings on the material frame 41 rolls into the support groove 221. At the same time, the clamping mechanism 5 clamps the end of the casting. As the rotating frame 2 rotates, the casting is driven to be located in the cutting station and the unloading station in turn; when the casting is located at the cutting station and in the process of rotating from the cutting station to the unloading station, the support plate 62 always supports the cut casting. When the casting is located at the unloading station, the clamping mechanism 5 passively releases the clamping of the casting. Subsequently, the base 61 rotates and resets from the unloading station to the cutting station, and in the process of rotating and resetting, the support plate 62 first retracts and then extends out in the base 61 to support the next casting located at the cutting station again.

[0057] Step 3: Repeat steps 1 and 2 above.

[0058] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A laser cutting device for metal casting processing, characterized in that: include: Rack (1); A rotating frame (2), comprising a clamping plate (21) and a supporting plate (22) connected to the frame (1) in an intermittently rotatable manner, a rotating shaft (23) being fixedly connected between the clamping plate (21) and the supporting plate (22), and a plurality of supporting grooves (221) being provided on the supporting plate (22); A cutting mechanism (3) fixedly connected to the frame (1); A material unloading mechanism (4), comprising a material rack (41) fixedly connected to the frame (1), a plurality of castings being arranged on the material rack (41), each casting being separated from the material rack (41) in sequence and being closely fitted with each supporting groove (221); A plurality of clamping mechanisms (5) are arranged on the clamping plate (21) and are used to clamp the inner wall of the casting; The supporting mechanism (6) comprises a supporting plate (62) connected to the frame (1) for reciprocating rotation, and the supporting plate (62) is in abutment with the casting.

2. A laser cutting device for metal casting processing according to claim 1, characterized in that: Each clamping mechanism (5) comprises a rotating rod (51) fixedly connected to the clamping plate (21), a worm wheel (52) fixedly connected to the rotating rod (51), a worm (53) rotatably connected to the clamping plate (21), a first gear (54) fixedly connected to the worm (53), a first rack (55) and a second rack (56) fixedly connected to the frame (1), the first gear (54) meshing with the first rack (55) and the second rack (56) respectively, and a rotating rod (51) fixedly connected to the rotating rod (51) and a worm wheel (53) rotatably connected to the clamping plate (21). The movable plate (57) is provided with a plurality of through slots on the rotating plate (57), a sliding rod (58) is slidably connected to the clamping plate (21), a contact rod (581) is fixedly connected to the sliding rod (58), an extension slot slidably contacted with the contact rod (581) is provided on the rotating rod (51), a fixed plate (59) is fixedly connected to the sliding rod (58), a straight slot (591) corresponding to each through slot is provided on the fixed plate (59), and a clamping rod (510) is slidably contacted between the straight slot (591) and the corresponding through slot.

3. A laser cutting device for metal casting processing according to claim 2, characterized in that: The extension groove is composed of an inclined groove (511) and a peripheral groove (512) connected to each other.

4. A laser cutting device for metal casting processing according to claim 2, characterized in that: The through groove is composed of an arc section (571) and a straight section (572) connected together.

5. The laser cutting device for metal casting processing according to claim 1, characterized in that: The unloading mechanism (4) further comprises a baffle (42) slidably connected to the material frame (41), a cross bar (43) being fixedly connected to the baffle (42), a slide plate (44) slidably connected to the frame (1), the slide plate (44) abutting against the clamping plate (21), a descending groove (441) being provided on the slide plate (44), the descending groove (441) abutting against the cross bar (43), and a first spring (45) being arranged between the slide plate (44) and the frame (1).

6. The laser cutting device for metal casting processing according to claim 1, characterized in that: The support mechanism (6) also includes a base (61) rotatably connected to the frame (1); a support plate (62) slidably connected in the base (61); an elastic telescopic rod (63) is provided on the support plate (62); a second spring (64) is provided between the support plate (62) and the inner wall of the base (61); a fixed plate (65) is fixedly connected to the frame (1); a reciprocating groove is provided on the fixed plate (65); and the end of the elastic telescopic rod (63) is in slidable contact with the reciprocating groove.

7. A laser cutting device for metal casting processing according to claim 6, characterized in that: The reciprocating groove is composed of a first section (651), a second section (652) and a third section (653) connected together, and the first section (651) and the third section (653) have the same depth, the second section (652) has a greater depth than the first section (651), and a slope is provided at the connecting position of the third section (653) and the second section (652).

8. The laser cutting device for metal casting processing according to claim 6, characterized in that: The elastic telescopic rod (63) comprises a sleeve (631) fixedly connected to the base (61), a retractable rod (632) is slidably connected inside the sleeve (631), and a third spring (633) is arranged between the retractable rod (632) and the sleeve (631).

9. The laser cutting device for metal casting processing according to claim 6, characterized in that: The invention also comprises a driving mechanism (7), which comprises an intermittent disk (71) fixedly connected to the supporting disk (22), a plurality of intermittent grooves (72) being provided on the intermittent disk (71), a plurality of limit plates (73) being fixedly connected to the intermittent disk (71), a driving member (74) being rotatably connected to the frame (1), one end of the driving member (74) being rotatably matched with each limit plate (73), and the other end of the driving member (74) being fixedly connected with a lever (75), the lever (75) being slidably abutted against each intermittent groove (72), a second gear (76) being fixedly connected to the rotating shaft (23), a third gear (77) being rotatably connected to the frame (1), a plurality of reciprocating rods (78) being fixedly connected to the second gear (76) and the third gear (77), and a fourth gear (79) being fixedly connected to the base (61), each reciprocating rod (78) being rotatably abutted against the tooth gap of the fourth gear (79).

10. A cutting method, wherein the cutting method uses the laser cutting device for metal casting processing according to claims 1 to 9, characterized in that: The following steps are involved: Step 1: placing the casting to be laser cut on a material rack (41); Step 2: The driving member (74) is rotated. The power of the driving member (74) drives the rotating frame (2) to rotate intermittently on the one hand, and drives the base (61) to rotate back and forth between the cutting station and the unloading station on the other hand; the intermittent rotation of the rotating frame (2) cooperates with the unloading mechanism (4) so ​​that one of the castings on the material frame (41) rolls into the support groove (221). At the same time, the clamping mechanism (5) clamps the end of the casting. As the rotating frame (2) rotates, the casting is driven to be located in sequence. Cutting station and unloading station; when the casting is located at the cutting station and in the process of rotating from the cutting station to the unloading station, the support plate (62) always supports the cut casting, and when the casting is located at the unloading station, the clamping mechanism (5) passively releases the clamping of the casting, and then the base (61) rotates and resets from the unloading station to the cutting station, and during the rotation and reset process, the support plate (62) first retracts and then extends out in the base (61), so as to support the next casting located at the cutting station again. Step 3: Repeat steps 1 and 2 above.

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