Laser cutting apparatus, cutting method and cutting system

Abstract

The application belongs to the technical field of laser cutting, and particularly relates to a laser cutting device, a cutting method and a cutting system. The laser cutting device comprises a feeding device, a first y-direction moving device, a turnover belt line, a second y-direction moving device, a discharging device, a cover plate folding and unfolding device and a laser processing device which are sequentially arranged along an x direction. The first y-direction moving device is provided with a first transfer belt line and a first cutting platform, and the second y-direction moving device is provided with a second transfer belt line and a second cutting platform. In other words, the laser cutting device can complete front and back cutting of a product by using one device, or can be connected in series by two devices, one of which cuts the front surface and the other cuts the back surface. The problem of large taper of single-surface cutting products can be solved, and the efficiency of double-surface cutting can be at least doubled. Since there are carriers and cover plates, the products are in the middle layer, which can well press the products for cutting, and the products will not move as in single-surface cutting.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of laser cutting, and particularly relates to a laser cutting device, a cutting method and a cutting system. BACKGROUND

[0002] Currently, the existing PCB laser cutting machine mainly adopts a single-sided cutting mode, generally uses an ultraviolet nanosecond laser, and has the following problems:

[0003] 1. The single-sided cutting mode will generate a large product taper (related to the edge angle of the field mirror design), which is easy to exceed the tolerance and affect the subsequent assembly of the SMT process;

[0004] 2. The single-sided cutting mode is low in efficiency. According to the principle of laser processing, the thicker the thickness, the longer the cutting time will be in direct proportion to the square of the thickness; the unit hour production of the commonly used standard chip mounter on the market cannot be met;

[0005] 3. The ultraviolet nanosecond laser is low in processing efficiency. In the case of processing the same number, more time is often needed, and the quality is good, but the efficiency is low;

[0006] 4. There is no cover plate to press the products in the carrier during single-sided cutting, and the products will move at the end of cutting, which will cause the edge error (the most obvious manifestation is that the cutting line or cleaning line is cut on the product). SUMMARY

[0007] The application aims to provide a laser cutting device, a cutting method and a cutting system.

[0008] In a first aspect, the application provides a laser cutting device, comprising:

[0009] A feeding device, a first y-direction moving device, a turnover belt line, a second y-direction moving device, a discharging device, a cover plate folding and unfolding device and a laser processing device are sequentially arranged along the x-direction; wherein,

[0010] The feeding device is used for receiving products to be cut, and the discharging device is used for discharging the cut products;

[0011] The cover plate folding and unfolding device is used for placing a cover plate on the products to be cut on the feeding device and recycling the cover plate on the cut products on the discharging device;

[0012] The first y-direction moving device is provided with a first transfer belt line and a first cutting platform, and the second y-direction moving device is provided with a second transfer belt line and a second cutting platform; the first y-direction moving device and the second y-direction moving device are sequentially provided with an avoiding position, a transfer position and a laser processing position along the y direction; the first transfer belt line moves between the transfer position and the avoiding position, and the first cutting platform moves between the transfer position and the laser processing position; the second transfer belt line moves between the transfer position and the avoiding position, and the second cutting platform moves between the transfer position and the laser processing position.

[0013] The laser processing device is arranged at the end side of the first y-direction moving device and the second y-direction moving device, and is used for processing the products on the first cutting platform and the second cutting platform.

[0014] In an embodiment of the present application, the feeding device and the discharging device are conveying belt lines.

[0015] In an embodiment of the present application, the feeding device and the discharging device are turnover belt lines.

[0016] In an embodiment of the present application, the conveying belt line comprises:

[0017] a first side plate and a second side plate; the first side plate and the second side plate are both provided with conveying belts;

[0018] a belt driving mechanism for driving the conveying belts to move;

[0019] a position blocking assembly arranged at the front side and / or the rear side of each conveying belt, for stopping the products when the products are conveyed to the position; and

[0020] a jacking positioning assembly for positioning the carriers.

[0021] In an embodiment of the present application, the turnover belt line comprises:

[0022] a bottom plate;

[0023] a first mounting seat and a second mounting seat; the first mounting seat and the second mounting seat are respectively provided with corresponding turnover plates;

[0024] a belt clamping and conveying assembly arranged at the inner side of the corresponding turnover plate, for clamping and conveying the carriers; and

[0025] a turnover plate driver for driving the turnover plate to turn over.

[0026] In an embodiment of the present application, the turnover belt line further comprises a distance adjusting mechanism;

[0027] the first mounting seat is mounted on the guide rail of the bottom plate;

[0028] The distance adjusting mechanism comprises:

[0029] A distance adjusting screw rod, one end of which is rotationally connected to the bottom plate, and the other end of which is matched with the first mounting seat through a screw rod nut; and

[0030] A screw rod driver for driving the distance adjusting screw rod to rotate.

[0031] In an embodiment of the present application, the cutting platform comprises:

[0032] A box, an upper end of which is open;

[0033] Two moving belts, which are respectively arranged on opposite side walls of the box; a fixed plate is arranged above the moving belts on the box;

[0034] A jacking assembly for jacking the product against a lower surface of the fixed plate after the product is in place.

[0035] In an embodiment of the present application, the cover plate folding and storing device comprises:

[0036] Two vertical columns;

[0037] A linear moving mechanism arranged along the x direction, two ends of which are respectively mounted on the vertical columns;

[0038] A cover plate grabbing mechanism, which is mounted on a moving plate of the linear moving mechanism through a lifting device; and

[0039] A cover plate storage position, which is fixed on the linear moving mechanism.

[0040] In a second aspect, the present application provides a laser cutting method using the laser cutting device as described above, which comprises:

[0041] The laser processing device performs back face cutting on the nth product on the first cutting platform in the laser processing position, and performs front face cutting on the (n-1)th product on the second cutting platform in the laser processing position;

[0042] The feeding device receives the (n+1)th product with the front face upward and carried by the carrier, the cover plate folding and storing device places the cover plate on the product to be cut on the feeding device, the first transfer belt line moves to the transfer position, and the (n+1)th product with the cover plate is transported to the turnover belt line, and after being turned over to the back face upward, is transported back to the feeding device for waiting;

[0043] After the nth and the (n+1)th products are cut, the first and the second transfer belt lines move to the avoiding position, and the first and the second cutting platforms move to the transfer position; the first cutting platform transports the nth product after back face cutting to the turnover belt line, and turns over to the front face upward, the second cutting platform transports the (n-1)th product after front face cutting to the discharging device, and the cover plate folding and storing device recovers the cover plate on the discharging device.

[0044] The product is transported to the second cutting platform by the overturning belt line, and the feeding device transports the n+1 product to the first cutting platform; the first cutting platform and the second cutting platform are moved to the laser processing position for cutting.

[0045] In a third aspect, the application provides a laser cutting system using the laser cutting device as described above, comprising:

[0046] Two laser cutting devices in series; wherein

[0047] The upstream laser cutting device cuts one side of the product, and the downstream laser cutting device is used to cut the other side of the product.

[0048] The beneficial effects of the application are:

[0049] The laser cutting device of the application comprises a feeding device, a first y-direction moving device, an overturning belt line, a second y-direction moving device, a discharging device, and a cover plate folding and unfolding device and a laser processing device arranged in sequence along the x-direction; the first y-direction moving device is provided with a first transfer belt line and a first cutting platform, and the second y-direction moving device is provided with a second transfer belt line and a second cutting platform. In other words, the laser cutting device can complete the front and back cutting of the product with one device, or two devices in series, one cutting the front and the other cutting the back. The problem of large taper of single-sided cutting products can be solved, and the efficiency of double-sided cutting can be at least doubled; due to the existence of the carrier and the cover plate, the products are in the middle layer, which can well compress the products for cutting, and the situation that the products will move when single-sided cutting will not occur.

[0050] Other features and advantages of the application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application. The objects and other advantages of the application will be realized and attained by the structure particularly pointed out in the description and the drawings.

[0051] In order to make the above-mentioned objects, features and advantages of the application more obvious and easy to understand, the following preferred embodiments are specifically described, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0052] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0053] Figure 1is a top view of the carrier and the cover plate when they are equal in width in the y direction;

[0054] Figure 2 is an x-direction side view of the carrier and the cover plate when they are equal in width in the y direction;

[0055] Figure 3 is a flow state schematic diagram of the carrier and the cover plate when they are equal in width in the y direction;

[0056] Figure 4 is a top view of the carrier and the cover plate when they are not equal in width in the y direction;

[0057] Figure 5 is an x-direction side view of the carrier and the cover plate when they are not equal in width in the y direction;

[0058] Figure 6 is a flow state schematic diagram of the carrier and the cover plate when they are not equal in width in the y direction;

[0059] Figure 7 is a perspective view of a preferred embodiment of the laser cutting device of the present application;

[0060] Figure 8 is a top view of a preferred embodiment of the laser cutting device of the present application;

[0061] Figure 9 is a perspective view of a preferred embodiment of the y-direction moving device of the present application;

[0062] Figure 10 is a perspective view of a preferred embodiment of the conveying belt line of the present application;

[0063] Figure 11 is a perspective view of a preferred embodiment of the turnover belt line of the present application;

[0064] Figure 12 is a perspective view of a preferred embodiment of the cutting platform of the present application;

[0065] Figure 13 is a perspective view of a preferred embodiment of the cover plate folding and unfolding device of the present application.

[0066] In the drawings:

[0067] product 100, carrier 101, cover plate 102, belt 103;

[0068] The feeding device 1, the first y-direction moving device 2, the first transfer belt line 21, the first cutting platform 22, the box 221, the moving belt 222, the fixed plate 223, the jacking assembly 224, the overturning belt line 3, the bottom plate 31, the first mounting seat 32, the second mounting seat 33, the overturning plate 34, the belt clamping and conveying assembly 35, the overturning plate driver 36, the pitch adjusting mechanism 37, the pitch adjusting screw 371, the screw driver 372, the guide rail 38, the second y-direction moving device 4, the second transfer belt line 41, the second cutting platform 42, the discharging device 5, the cover plate folding and unfolding device 6, the column 61, the linear moving mechanism 62, the cover plate grabbing mechanism 63, the lifting device 64, the cover plate storage site 65, the laser processing device 7, the conveying belt line 8, the first side plate 81, the second side plate 82, the conveying belt 83, the belt driving mechanism 84, the in-place blocking assembly 85, and the jacking positioning assembly 86. DETAILED DESCRIPTION

[0069] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be described below in detail with reference to the drawings, obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0070] The present application provides a laser cutting device, a cutting method and a cutting system, which are described below in detail. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments of the present application. Moreover, in the following embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0071] Currently, some laser cutting processes of planar products, such as PCB, mainly adopt single-sided cutting mode, generally use ultraviolet nanosecond laser, and have the following problems:

[0072] 1. The single-sided cutting mode will generate a large product taper (related to the edge angle designed by the field lens), which is easy to exceed the tolerance and affect the subsequent assembly of SMT process;

[0073] 2. The single-sided cutting mode is low in efficiency. According to the principle of laser processing, the thicker the thickness, the longer the cutting time will be proportional to the square of the thickness; it cannot meet the unit hour production of the commonly used standard chip mounter on the market;

[0074] 3. The ultraviolet nanosecond laser has low processing efficiency, and in the case of processing the same number, more time is often needed, which has the advantage of good quality but the disadvantage of low efficiency;

[0075] 4. When cutting one side, there is no cover plate to press the product in the carrier, and at the end of cutting, the product will move, resulting in misalignment (the most obvious manifestation is that the cutting line or cleaning line cuts the product).

[0076] By carrying the product on the bottom surface of the carrier, covering the upper surface of the product with the cover plate, and using double-sided cutting, i.e., cutting one side of the product to complete half-depth cutting, and then turning over the product to cut the other half-depth, the above problems can be overcome.

[0077] Referring to Figures 1 to 3 In some scenarios, the product 100 is transported in the x direction, and the width of the cover plate 102 and the carrier 101 in the y direction is the same, so that in the turning process, the upper and lower belts of the turning belt line clamp the carrier and the cover plate respectively. In this scenario, the cover plate 102 and the carrier 101 can be matched by a pin and a pin hole, or can be matched by magnetic attraction.

[0078] Referring to Figures 4 to 6 In some scenarios, the product 100 is transported in the x direction, and the width of the cover plate 102 and the carrier 101 in the y direction is not the same, and the width of the cover plate 102 is smaller than that of the carrier 101. Then in the turning process, the upper and lower belts of the turning belt line clamp the upper and lower surfaces of the carrier respectively. In this scenario, the cover plate 102 and the carrier 101 can be matched by magnetic attraction.

[0079] Referring to Figure 7 , Figure 8 and Figure 9 In an embodiment, the laser cutting device comprises: a feeding device 1, a first y-direction moving device 2, a turning belt line 3, a second y-direction moving device 4, a discharging device 5, a cover plate receiving and releasing device 6, and a laser processing device 7 arranged in sequence in the x direction; wherein

[0080] The feeding device 1 is used to receive the product to be cut, and the discharging device 5 is used to output the cut product;

[0081] The cover plate receiving and releasing device 6 is used to place a cover plate on the product to be cut on the feeding device 1, and to recover the cover plate on the cut product on the discharging device 5;

[0082] The first y-direction moving device 2 is provided with a first transfer belt line 21 and a first cutting platform 22, and the second y-direction moving device 4 is provided with a second transfer belt line 41 and a second cutting platform 42; the first y-direction moving device 2 and the second y-direction moving device 4 are sequentially provided with an avoiding position, a transfer position and a laser processing position along the y direction, the transfer position on the first y-direction moving device 2 is respectively connected to the feeding device 1 and the turnover belt line 3 on both sides, and the transfer position on the second y-direction moving device 4 is respectively connected to the turnover belt line 3 and the discharging device 5 on both sides; the first transfer belt line 21 moves between the transfer position and the avoiding position, the first cutting platform 22 moves between the transfer position and the laser processing position, the second transfer belt line 41 moves between the transfer position and the avoiding position, and the second cutting platform 42 moves between the transfer position and the laser processing position.

[0083] The laser processing device 7 is arranged at the end side of the first y-direction moving device 2 and the second y-direction moving device 4, and is used for processing the products on the first cutting platform 22 and the second cutting platform 42.

[0084] Optionally, the first y-direction moving device 2 and the second y-direction moving device 4 can be a linear motor with double movers.

[0085] In some embodiments, the feeding device 1 and the discharging device 5 are conveying belt lines 8. The conveying belt lines 8 only have horizontal conveying function, and do not have turnover function.

[0086] Optionally, referring to Figure 10 , the conveying belt line 8 comprises a first side plate 81 and a second side plate 82; the first side plate 81 and the second side plate 82 are both provided with a conveying belt 83; a belt driving mechanism 84 is used for driving the conveying belt 83 to move; a position blocking assembly 85 is arranged on the front side and / or the rear side of each conveying belt 83, and is used for stopping the product when the product is conveyed to the position; and a jacking positioning assembly 86 is used for positioning the carrier.

[0087] Optionally, one of the first side plate 81 and the second side plate 82 can be mounted on a sliding rail and driven by a screw rod driving mechanism to adjust the distance between the first side plate 81 and the second side plate 82; the position blocking assembly 85 can be a pneumatic cylinder controlled by a control module, and a position sensor can be arranged on the first side plate 81 and the second side plate 82, so that when the product is detected to be conveyed to the position, the control module controls the blocking assembly 85 to act to stop the product; the jacking positioning assembly 86 can be a top plate driven by a pneumatic cylinder, and the upper surface of the top plate can be provided with a positioning pin inserted into a positioning hole on the carrier 101, so as to position the product to the position to cooperate with the cover plate 102.

[0088] In some embodiments, the feeding device 1 and the discharging device 5 are turnover belt lines. The turnover belt line has the functions of horizontal conveying and product surface turning.

[0089] Specifically, referring to Figure 11 , the turnover belt line 3 comprises a bottom plate 31, a first mounting base 32 and a second mounting base 33, a turnover plate 34 arranged on each of the first mounting base 32 and the second mounting base 33, a belt clamping conveying assembly 35 arranged on the inner side of the turnover plate 34 for clamping and conveying a carrier, and a turnover plate driver 36 for driving the turnover plate 34 to turn.

[0090] In this embodiment, after the product is clamped by the belt clamping conveying assembly 35, the turnover plate driver 36 drives the corresponding turnover plate 34 to turn, so as to turn the product.

[0091] Further, the turnover belt line 3 further comprises a distance adjusting mechanism 37; the first mounting base 32 is mounted on a guide rail 38 of the bottom plate 31; the distance adjusting mechanism 37 comprises a distance adjusting screw rod 371, one end of which is rotationally connected with the bottom plate 31, the other end of which is matched with the first mounting base 32 through a screw rod nut, and a screw rod driver 372 for driving the distance adjusting screw rod 371 to rotate.

[0092] Referring to Figure 12 , the cutting platform comprises a box body 221 with an open upper end, two movable belts 222 arranged on the opposite side walls of the box body 221 respectively, a fixed plate 223 arranged above the movable belts 222 on the box body 221, and a jacking assembly 224 for jacking the product tightly against the lower surface of the fixed plate 223 after the product is in place.

[0093] In this embodiment, the movable belts 222 can input or output the product 100 into or out of the box body 221; and the jacking assembly 224 can fix the product during laser processing.

[0094] Referring to Figure 13 , the cover plate folding and unfolding device 6 comprises two vertical columns 61, a linear motion mechanism 62 arranged along the x direction, the two ends of which are respectively mounted on the vertical columns 61, a cover plate grabbing mechanism 63 mounted on the moving plate of the linear motion mechanism 62 through a lifting device 64, and a cover plate storage site 65 fixed on the linear motion mechanism 62.

[0095] Optionally, the cover plate grabbing mechanism 63 can include multiple negative pressure suction heads, or can be pressed tightly by a spring mechanism and then clamped by a cylinder on both sides of the cover plate. At the same time, in order to facilitate the disassembly of the cover plate, a spring pressing structure can also be provided to press against the carrier, and the grabbing structure can be moved up to disassemble the cover plate (overcome the magnetic attraction). The lifting device 64 can be a lifting motor; the cover plate storage and retrieval device 6 can suck the cover plate 102 at the cover plate storage position 65 and place it on the product of the feeding device 1, and can suck the cover plate on the product of the discharging device 5 to the cover plate storage position 65.

[0096] In some embodiments, the two laser processing devices 7 have the same structure and can include a Z-axis, a galvanometer, a field lens, a Z-axis optical path, a camera, a lens, a light source, an upper dust cover, etc. The two laser processing devices 7 can be respectively mounted on the two movers of the double-mover linear motor. The CCD of the laser processing device 7 is responsible for capturing the Mark point of the product, and cooperates with the XZ-axis and the Y-axis of the cutting platform to realize processing according to the dxf or gerber drawing position.

[0097] In some embodiments, during laser cutting, the position scanning of the product (CCD positioning) can be completed through the internal structure of the equipment before processing, thereby saving the photographing and positioning time of the laser head (i.e., the CCD completes the product positioning function in advance and the function of capturing four targets of the product at one time); the large-format field lens processing range (110x110 or more), or the double-galvanometer splicing (MxN way), can realize cutting of a 110*M x 110*N format at one time, reduce the axis movement time, and complete the reduction of CT through the high-speed jumping of the galvanometer.

[0098] In one application scenario, one of the above laser cutting devices can be used to cut the front and back surfaces of the product. Specifically, a laser cutting method includes:

[0099] The laser processing device 7 performs back surface cutting on the nth product located on the first cutting platform 22 at the laser processing position, and performs front surface cutting on the n-1th product located on the second cutting platform 42 at the laser processing position;

[0100] At the same time, the feeding device 1 receives the n+1th product with the front surface upward and carried by the carrier, the cover plate storage and retrieval device 6 places a cover plate on the product to be cut on the feeding device 1, the first transfer belt line 21 moves to the transfer position, and the n+1th product with the cover plate is transported to the turnover belt line 3 and turned over to the back surface upward, and then transported back to the feeding device 1 for waiting;

[0101] After the n-th and the n+1-th product are cut, the first and second transfer belt lines 41 move to the avoiding position and the first and second cutting platforms 42 move to the transferring position; the first cutting platform 22 delivers the n-th product cut on the reverse side to the turnover belt line 3 to be turned over to the front side up, and the second cutting platform 42 delivers the n-1-th product cut on the front side to the discharging device 5, and the cover plate folding and unfolding device 6 recovers the cover plate on the discharging device 5;

[0102] The turnover belt line 3 delivers the n-th product to the second cutting platform 42, and the feeding device 1 delivers the n+1-th product to the first cutting platform 22; the first and second cutting platforms 42 move to the laser processing position to be cut. The above process is repeated.

[0103] In the embodiment, the cover plate 102 can be recovered at the discharging device 5 by cutting on the reverse side first. See Figure 2 When the production direction is from left to right, the second transfer belt line 41 is in idle state; when the production direction is from right to left, the second transfer belt line 41 replaces the first transfer belt line 21, which shows that the laser cutting equipment has strong versatility. The feeding device 1 and the discharging device 5 only need to play the role of horizontal conveying, so they can be conveying belt lines 8 or turnover belt lines.

[0104] Preferably, in the embodiment, the feeding device 1 and the discharging device 5 are both conveying belt lines 8, and the width of the cover plate 102 and the carrier 101 in the y direction is the same. On the one hand, it is convenient to take and place the cover plate; on the other hand, in the circulation process, the carrier is dragged by the belt when the product is front side up, and the cover plate can be dragged by the belt when the product is reverse side up, so the conveying is stable and the cover plate will not fall off due to turning over.

[0105] In another application scenario, two laser cutting equipment described above can be connected in series to form a laser cutting system. In an embodiment, the laser cutting system includes two laser cutting equipment connected in series as described above; the laser cutting equipment located upstream cuts one side of the product, and the laser cutting equipment located downstream cuts the other side of the product.

[0106] For example, the two laser processing positions of the first laser cutting equipment can be used to cut the front side of the product, and the feeding device 1 and the discharging device 5 only need to play the role of horizontal conveying, so they can be conveying belt lines 8 or turnover belt lines. The turnover belt line 3 in the first y-direction moving device 2 and the second y-direction moving device 4 also only needs to play the role of horizontal conveying. The first transfer belt line 21 and the second transfer belt line 41 can be idle.

[0107] The two laser processing positions of the second laser cutting device can be used to cut the back of the product. The feeding device 1 and the discharging device 5 are both turnover belt lines 3, which need to play a turnover function, and the turnover belt lines 3 in the first y-direction moving device 2 and the second y-direction moving device 4 only play a horizontal conveying function. Specifically, the product conveyed in the front is conveyed to the feeding device 1, which turns over the product to have the back upward; the cover plate folding device 6 places the cover plate 102 on the product, and then the product is conveyed to the first cutting platform 22 or the second cutting platform 42 for cutting; after the cutting of the product is completed, the cover plate 102 is recovered on the discharging device 5, and then the discharging device 5 turns over the product 100 to have the front upward.

[0108] Optionally, the laser cutting system of the embodiment can be applied to the scenario where the cover plate 102 is smaller than the width of the carrier 101 in the y direction. For example, the feeding device 1 and the discharging device 5 of the second laser cutting device are both turnover belt lines 3, the cover plate 102 is smaller than the width of the carrier 101 in the y direction, and the turnover belt lines 3 only clamp the two sides of the carrier 101, without affecting the taking and placing of the cover plate 102.

[0109] In summary, by cutting the product on both sides, the problem of cutting a large taper of the product can be solved (under the same galvanometer field mirror configuration, the taper of the double-sided cutting is only half of the original single-sided cutting taper); according to the thickness effect of laser processing (time is proportional to the square of thickness), the double-sided cutting can at least be 2 times more efficient; the double-sided cutting needs to be turned over on both sides, after the product flows into the machine with the carrier, the machine first installs the cover plate, and then turns over to have the back upward, the equipment first cuts the back, and then turns over to have the front upward, and completes the front cutting. Since there is a carrier and a cover plate, the product is in the middle layer (sandwich), which can be well compressed for cutting, and there is no movement of the product as in single-sided cutting; the double-platform front and back cutting can fully utilize the time proportion of the laser head, and can almost keep it in the processing state without waiting time, which can achieve the highest machine efficiency.

[0110] It should be noted that each device (components without specific structure) selected in the present application is a general standard component or a component known to those skilled in the art, and its structure and principle can be known by technical personnel through a technical manual or through a conventional experimental method.

[0111] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0112] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0113] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined by the scope of the claims.

Claims

1. A laser cutting device, characterized in that: include: A feeding device (1), a first y-direction moving device (2), a turning belt line (3), a second y-direction moving device (4), a discharging device (5), a cover plate retracting device (6), and a laser processing device (7) are sequentially arranged along the x-direction; wherein, The feeding device (1) is used to receive the product to be cut carried by the carrier, and the discharging device (5) is used to output the cut product; The cover plate receiving and placing device (6) is used to place the cover plate on the product to be cut on the feeding device (1), and to recycle the cover plate on the cut product on the discharging device (5); The first y-direction moving device (2) is provided with a first transfer belt line (21) and a first cutting platform (22), and the second y-direction moving device (4) is provided with a second transfer belt line (41) and a second cutting platform (42); the first y-direction moving device (2) and the second y-direction moving device (4) are provided with an avoidance position, a transfer position and a laser processing position in sequence along the y direction; the two sides of the transfer position on the first y-direction moving device (2) are respectively connected to the feeding device (1) and the flip belt line (3), and the two sides of the transfer position on the second y-direction moving device (4) are respectively connected to the flip belt line (3) and the discharging device (5); the first transfer belt line (21) moves between the transfer position and the avoidance position, and the first cutting platform (22) moves between the transfer position and the laser processing position; the second transfer belt line (41) moves between the transfer position and the avoidance position, and the second cutting platform (42) moves between the transfer position and the laser processing position; The laser processing device (7) is arranged at the end side of the first y-direction moving device (2) and the second y-direction moving device (4), and is used to process products on the first cutting platform (22) and the second cutting platform (42); The turning belt line (3) comprises: bottom plate (31); A first mounting seat (32) and a second mounting seat (33); the first mounting seat (32) and the second mounting seat (33) are respectively provided with corresponding flip plates (34); A belt clamping and conveying assembly (35) is provided on the inner side of the corresponding flip plate (34) and is used for clamping and conveying the carrier; and A flip plate driver (36) for driving the flip plate (34) to flip; The cutting platform comprises: The box body (221) has an opening at its upper end; Two moving belts (222) are respectively arranged on opposite side walls of the box (221); the moving belts (222) can input or output the product (100) into or out of the box (221); a fixing plate (223) is arranged on the box (221) above the moving belts (222); A lifting assembly (224) is used to press the product against the lower surface of the fixing plate (223) after the product is in place; The cover plate retracting and extending device (6) comprises: two uprights (61); A linear moving mechanism (62) arranged along the x-direction, with both ends of the mechanism being mounted on the columns (61); A cover plate grabbing mechanism (63) mounted on a movable plate of the linear moving mechanism (62) via a lifting device (64); and A cover plate storage position (65) is fixed on the linear motion mechanism (62); The bottom surface of the product is supported by a carrier, and the cover plate is placed on the upper surface of the product. First, one side of the product is cut to complete half the depth, and then the product is turned over and cut to the other half depth.

2. The laser cutting equipment according to claim 1, characterized in that: The feeding device (1) and the discharging device (5) are conveying belt lines (8).

3. The laser cutting equipment according to claim 1, characterized in that: The feeding device (1) and the discharging device (5) are turnover belt lines.

4. The laser cutting equipment according to claim 2, characterized in that: The conveyor belt line (8) comprises: A first side plate (81) and a second side plate (82); a conveyor belt (83) is provided on both the first side plate (81) and the second side plate (82); A belt drive mechanism (84) for driving the conveyor belt (83) to move; In-place blocking components (85), respectively arranged on the front side and / or the rear side of each conveyor belt (83), are used to stop the product when the product is delivered to the right position; and The lifting and positioning assembly (86) is used to position the carrier.

5. The laser cutting equipment according to claim 1, characterized in that: The flip belt line (3) further includes a distance adjustment mechanism (37); The first mounting seat (32) is mounted on the guide rail (38) of the base plate (31); The distance adjustment mechanism (37) comprises: A pitch-adjusting screw (371), one end of which is rotatably connected to the base plate (31), and the other end of which is engaged with the first mounting seat (32) via a screw nut; and The screw driver (372) is used to drive the pitch-adjusting screw (371) to rotate.

6. A laser cutting method using the laser cutting equipment according to any one of claims 1 to 5, characterized in that: include: The laser processing device performs reverse cutting on the nth product on the first cutting platform located at the laser processing position, and performs front cutting on the n-1th product on the second cutting platform located at the laser processing position; The feeding device receives the n+1th product with the front side facing upward and carried by the carrier, the cover plate receiving and placing device places the cover plate on the product to be cut on the feeding device, the first transfer belt line moves to the transfer position, and conveys the n+1th product covered with the cover plate to the flipping belt line, flips it to the reverse side facing upward, and then conveys it back to the feeding device to wait; After the nth and n-1th products are cut, the first and second transfer belt lines move to the avoidance position and the first and second cutting platforms move to the transfer position; the first cutting platform conveys the nth product after the back side is cut to the flipping belt line and flips it to the front side facing up, and the second cutting platform conveys the n-1th product after the front side is cut to the discharge device, and the cover plate retracting device reclaims the cover plate on the discharge device; The flip belt line transports the nth product to the second cutting platform, and the feeding device transports the n+1th product to the first cutting platform; the first cutting platform and the second cutting platform move to the laser processing position for cutting.

7. A laser cutting system using the laser cutting device according to any one of claims 1 to 5, characterized in that: include: Two laser cutting devices are connected in series; the upstream laser cutting device cuts one side of the product, and the downstream laser cutting device is used to cut the other side of the product.

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