Laser cutting equipment, cutting method and cutting system

Abstract

The invention belongs to the technical field of laser cutting, and particularly relates to laser cutting equipment, a cutting method and a cutting system. The laser cutting equipment comprises a feeding device, a first y-direction moving device, an overturning belt line, a second y-direction moving device, a discharging device, a cover plate folding and unfolding device and a laser machining device which are sequentially arranged in the x direction. A first transfer belt line and a first cutting platform are arranged on the first y-direction moving device, and a second transfer belt line and a second cutting platform are arranged on the second y-direction moving device. In other words, one laser cutting device can cut the front face and the back face of the product, the two laser cutting devices can be connected in series, and one laser cutting device cuts the front face and the other laser cutting device cuts the back face. The problem of large taper of a single-sided cutting product can be solved, and the efficiency of double-sided cutting can be improved by at least two times; due to the existence of the carrier and the cover plate, the product is located in the middle layer, the product can be well pressed to be cut, and the situation that the product moves during single-face cutting is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser cutting, and in particular relates to a laser cutting device, a cutting method and a cutting system. Background Art

[0002] Currently, existing PCB laser cutting machines mainly adopt single-sided cutting, generally using ultraviolet nanosecond lasers, which have the following problems:

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

[0004] 2. The single-sided cutting method is inefficient. According to the principle of laser processing, the thicker the thickness, the more time required to cut the film. It cannot meet the hourly production capacity of the standard SMT machines currently available on the market.

[0005] 3. The processing efficiency of ultraviolet nanosecond laser is low. It often takes more time to process the same amount. Its advantage is good quality, but its disadvantage is low efficiency.

[0006] 4. When cutting on one side, there is no cover to hold the product in the carrier tightly. At the end of cutting, the product may move and cause misalignment (the most obvious manifestation is that the cutting line or cleaning line cuts into the product). Summary of the invention

[0007] The purpose of the present invention is to provide a laser cutting device, a cutting method and a cutting system.

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

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

[0010] The feeding device is used to receive the product to be cut, and the discharging device is used to output the cut product;

[0011] The cover plate receiving and placing device is used to place the cover plate on the product to be cut on the feeding device, and to recycle the cover plate on the cut product 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 avoidance 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 avoidance position, and the first cutting platform moves between the transfer position and the laser processing position, and the second transfer belt line moves between the transfer position and the avoidance 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 sides of the first y-direction moving device and the second y-direction moving device, and is used to process the products on the first cutting platform and the second cutting platform.

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

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

[0016] In one embodiment of the present application, the conveyor belt line includes:

[0017] A first side plate and a second side plate; a conveyor belt is disposed on both the first side plate and the second side plate;

[0018] A belt driving mechanism, used for driving the conveyor belt to move;

[0019] In-place blocking components are respectively arranged at the front side and / or the rear side of each conveying belt, and are used to stop the product when the product is conveyed to the in-place position; and

[0020] The lifting and positioning assembly is used to position the carrier.

[0021] In one embodiment of the present application, the overturning belt line comprises:

[0022] Base 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 flip plates;

[0024] A belt clamping and conveying assembly, disposed on the inner side of the corresponding flip plate, for clamping and conveying the carrier; and

[0025] The flip plate driver is used to drive the flip plate to flip.

[0026] In one embodiment of the present application, the flip belt line further includes a distance adjustment mechanism;

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

[0028] The distance adjustment mechanism comprises:

[0029] A pitch-adjusting screw rod, one end of which is rotatably connected to the base plate, and the other end of which is engaged with the first mounting seat through a screw rod nut; and

[0030] The screw driver is used to drive the pitch-adjusting screw to rotate.

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

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

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

[0034] The lifting assembly is used to press the product against the lower surface of the fixing plate after the product is in place.

[0035] In one embodiment of the present application, the cover plate retracting device comprises:

[0036] Two uprights;

[0037] A linear moving mechanism arranged along the x direction, with both ends of the mechanism being respectively mounted on the columns;

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

[0039] The cover storage position 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, comprising:

[0041] 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;

[0042] 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 the n+1th product covered with the cover plate is conveyed to the flipping belt line, flipped to the reverse side facing upward, and then conveyed back to the feeding device to wait;

[0043] 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 to flip 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 discharging device, and the cover plate retracting device recycles the cover plate on the discharging device;

[0044] 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.

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

[0046] Two laser cutting devices connected in series;

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

[0048] The beneficial effects of the present invention are:

[0049] The laser cutting equipment of the present application includes: a feeding device, a first y-direction moving device, a flip belt line, a second y-direction moving device, a discharging device, a cover plate retracting 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 equipment can complete the front and back cutting of the product with one device, or two devices can be connected 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 double-sided cutting can increase efficiency by at least 2 times; due to the presence of carriers and cover plates, the products are all in the middle layer, which can compress the products well for cutting, and there will be no situation where the products will move like in single-sided cutting.

[0050] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0051] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

[0055] Figure 3 It is a schematic diagram of the flow state when the carrier and the cover plate have the same width in the y direction;

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

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

[0058] Figure 6 It is a schematic diagram of the flow state when the carrier and the cover plate have different widths in the y direction;

[0059] Figure 7 is a stereogram of a preferred embodiment of the laser cutting device of the present invention;

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

[0061] Fig. 9 is a stereogram of a preferred embodiment of the y-direction moving device of the present invention;

[0062] Fig.10 It is a stereogram of a preferred embodiment of a conveyor belt line of the present invention;

[0063] Fig.11 It is a stereogram of a preferred embodiment of the flip belt line of the present invention;

[0064] Fig.12 is a stereogram of a preferred embodiment of a cutting platform of the present invention;

[0065] Fig.13 It is a stereoscopic diagram of a preferred embodiment of the cover plate retracting and unfolding device of the present invention.

[0066] In the figure:

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

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

[0069] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0070] The present application provides a laser cutting device, a cutting method and a cutting system, which are described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0071] At present, the laser cutting process of some flat products, such as PCB boards, mainly adopts single-sided cutting method, generally using ultraviolet nanosecond lasers, which has the following problems:

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

[0073] 2. The single-sided cutting method is inefficient. According to the principle of laser processing, the thicker the thickness, the more time required to cut the film. It cannot meet the hourly production capacity of the standard SMT machines currently available on the market.

[0074] 3. The processing efficiency of ultraviolet nanosecond laser is low. It often takes more time to process the same amount. Its advantage is good quality, but its disadvantage is low efficiency.

[0075] 4. When cutting on one side, there is no cover to hold the product in the carrier tightly. At the end of cutting, the product may move and cause misalignment (the most obvious manifestation is that the cutting line or cleaning line cuts into the product).

[0076] The above problems can be overcome by using a carrier to carry the bottom surface of the product, covering the upper surface of the product with a cover plate, and adopting double-sided cutting, that is, first cutting one side of the product to complete the cutting of half the depth, and then turning the product over to cut the other half of the depth.

[0077] See also Figures 1 to 3 In some scenarios, the product 100 is transported along the x-direction, and the widths of the cover plate 102 and the carrier 101 are the same in the y-direction. In the flipping process, the upper and lower belts of the flipping 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 pins and pin holes, or by magnetic attraction.

[0078] See also Figures 4 to 6 In some scenarios, the product 100 is transported along the x-direction, and the widths of the cover plate 102 and the carrier 101 in the y-direction are different, and the cover plate 102 is smaller than the width of the carrier 101. In the flipping process, the upper and lower belts of the flipping 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] See also Figure 7 , Figure 8 and Fig. 9 In one embodiment, the laser cutting device includes: a feeding device 1, a first y-direction moving device 2, a flip 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 along 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 placing device 6 is used to place the cover plates on the products to be cut on the feeding device 1, and to recycle the cover plates on the cut products 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 avoidance position, a transfer position and a laser processing position 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;

[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 to process the products on the first cutting platform 22 and the second cutting platform 42 .

[0084] Optionally, the first y-axis moving device 2 and the second y-axis moving device 4 may be double-motor linear motors.

[0085] In some embodiments, the feeding device 1 and the discharging device 5 are conveying belt lines 8. The conveying belt line 8 only has a horizontal conveying function, but does not have a flipping function.

[0086] Optional, see Fig.10 The conveyor belt line 8 includes: a first side plate 81 and a second side plate 82; a conveyor belt 83 is provided on the first side plate 81 and the second side plate 82; a belt driving mechanism 84, used to drive the conveyor belt 83 to move; an in-place blocking component 85, which is respectively arranged on the front side and / or the rear side of each conveyor belt 83, and is used to stop the product when the product is transported to the in-place; and a lifting and positioning component 86, used to position the carrier.

[0087] Optionally, one of the first side plate 81 and the second side plate 82 can be installed on a slide rail, and the distance between the first side plate 81 and the second side plate 82 can be adjusted by a screw drive mechanism; the in-place blocking component 85 can be a cylinder, which is controlled by the control module. In-place sensors can be set on the first side plate 81 and the second side plate 82. When it is detected that the product is delivered in place, the control module controls the blocking component 85 to stop the product; the lifting and positioning component 86 can be a top plate driven by a cylinder, and the upper surface of the top plate can be provided with positioning pins for inserting into positioning holes on the carrier 101, so as to position the in-place product to cooperate with the cover plate 102.

[0088] In some embodiments, the feeding device 1 and the discharging device 5 are a turning belt line, which has the function of both horizontal conveying and turning over the product.

[0089] For details, see Fig.11 The flip belt line 3 includes: a bottom plate 31; a first mounting seat 32 and a second mounting seat 33; corresponding flip plates 34 are respectively arranged on the first mounting seat 32 and the second mounting seat 33; a belt clamping and conveying assembly 35, which is arranged on the inner side of the corresponding flip plate 34 and is used to clamp the conveying carrier; and a flip plate driver 36, which is used to drive the flip plate 34 to flip.

[0090] In this embodiment, after the product is held by the belt clamping conveying assembly 35, the flip plate driver 36 drives the corresponding flip plate 34 to flip, so that the product can be turned over.

[0091] Furthermore, the flip belt line 3 also includes a distance adjusting mechanism 37; the first mounting seat 32 is installed on the guide rail 38 of the base plate 31; the distance adjusting mechanism 37 includes: a distance adjusting screw rod 371, one end of which is rotatably connected to the base plate 31, and the other end is matched with the first mounting seat 32 through a screw nut; and a screw rod driver 372, which is used to drive the distance adjusting screw rod 371 to rotate.

[0092] See also Fig.12 The cutting platform includes: a box body 221, whose upper end is open; two moving belts 222, which are respectively arranged on opposite side walls of the box body 221; a fixing plate 223 is arranged on the box body 221 above the moving belts 222; and a lifting assembly 224, which is used to press the product against the lower surface of the fixing plate 223 after the product is in place.

[0093] In this embodiment, the moving belt 222 can input or output the product 100 into or out of the box 221; the lifting assembly 224 can fix the product during laser processing.

[0094] See also Fig.13 The cover plate folding and unfolding device 6 includes: two columns 61; a linear moving mechanism 62 arranged along the x direction, and its two ends are respectively installed on the columns 61; a cover plate grabbing mechanism 63, which is installed on the moving plate of the linear moving mechanism 62 through a lifting device 64; and a cover plate storage position 65, which is fixed on the linear moving mechanism 62.

[0095] Optionally, the cover plate grabbing mechanism 63 may include multiple negative pressure suction heads, or it may be a spring mechanism that is pressed tightly and then a cylinder is used to clamp the two sides of the cover plate. At the same time, in order to facilitate the removal of the cover plate, there may also be a spring pressure structure responsible for supporting the carrier, and the seal can be removed by moving the grabbing structure upward (overcoming the magnetic attraction). The lifting device 64 may be a lifting motor; the cover plate retracting device 6 can absorb the cover plate 102 at the cover plate storage position 65 and place it on the product of the feeding device 1, and can absorb 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 may 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, and other structures. The two laser processing devices 7 may be installed on the two movers of the double-motor linear motor respectively. The CCD of the laser processing device 7 is responsible for capturing the Mark point of the product, and in conjunction with the XZ axis and the Y axis of the cutting platform, it can realize position processing according to the DXF or Gerber drawing.

[0097] In some embodiments, during laser cutting, the position scanning (CCD positioning) of the product can be completed first through the internal structure of the equipment, and then processing can be carried out, saving the photo positioning time of the laser head (that is, the CCD completes the product pre-positioning function and the function of grabbing 4 targets of the product at a time); the large-format field mirror processing range (above 110x110), or dual galvanometer splicing (MxN method), can achieve 110*M x 110*N format cutting at one time, reducing the axis movement time, and the reduction of CT is achieved through the high-speed jump of the galvanometer.

[0098] In one application scenario, the front and back sides of a product can be cut by using the above laser cutting device. Specifically, a laser cutting method includes:

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

[0100] At the same time, the feeding device 1 receives the n+1th product with the front side facing upward and carried by the carrier, the cover plate receiving and placing device 6 places the cover plate on the product to be cut on the feeding device 1, and the first transfer belt line 21 moves to the transfer position, and the n+1th product covered with the cover plate is conveyed to the flipping belt line 3, flipped to the reverse side facing upward, and then conveyed back to the feeding device 1 to wait;

[0101] After the nth and n+1th products are cut, the first and second transfer belt lines 41 move to the avoidance position and the first and second cutting platforms 42 move to the transfer position; the first cutting platform 22 conveys the nth product after the back side is cut to the flip belt line 3 to flip it to the front side facing up, and the second cutting platform 42 conveys the n-1th product after the front side is cut to the discharge device 5, and the cover plate retracting device 6 recovers the cover plate on the discharge device 5;

[0102] The turning belt line 3 conveys the nth product to the second cutting platform 42, and the feeding device 1 conveys the n+1th product to the first cutting platform 22; the first cutting platform 22 and the second cutting platform 42 move to the laser processing position for cutting. This process is repeated.

[0103] In this embodiment, the cover plate 102 can be recovered at the discharge device 5 by first cutting the reverse side. Figure 2 When the production direction is from left to right, the second transfer belt line 41 is idle; when the production direction is from right to left, the second transfer belt line 41 replaces the first transfer belt line 21. It can be seen that the laser cutting equipment of the present application 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 flipping belt lines.

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

[0105] In another application scenario, a laser cutting system can be formed by using two of the above-mentioned laser cutting devices in series. In one embodiment, the laser cutting system includes two of the above-mentioned laser cutting devices in series; wherein the laser cutting device located upstream cuts one side of the product, and the laser cutting device located downstream is used to cut the other side of the product.

[0106] For example, the two laser processing positions of the first laser cutting equipment can both be used to cut the front of the product, and its feeding device 1 and discharging device 5 only need to play the role of horizontal transportation, so it can be a conveying belt line 8 or a flipping belt line. The flipping 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 transportation. 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 equipment can be used to cut the back side of the product. The feeding device 1 and the discharging device 5 are both flipping belt lines 3, which need to play a flipping function, and the flipping 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 from the front is conveyed to the feeding device 1, and the feeding device 1 turns it over so that the back side faces up; the cover plate retracting device 6 puts 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 cut product is recovered by the cover plate 102 on the discharging device 5, the discharging device 5 flips the product 100 back to the front side facing up.

[0108] Optionally, the laser cutting system of this 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 the flip belt line 3, and the cover plate 102 is smaller than the width of the carrier 101 in the y direction. The flip belt line 3 only clamps the two sides of the carrier 101, and does not affect the placement and removal of the cover plate 102.

[0109] In summary, by performing double-sided cutting on the product, the problem of large taper of the cutting product can be solved (under the same galvanometer field mirror configuration, the taper of double-sided cutting is only 1 / 2 of the original single-sided cutting taper); according to the thickness effect of laser processing (time is proportional to the square of the thickness), double-sided cutting can at least increase efficiency by 2 times; double-sided cutting requires flipping over and over. After the product flows into the machine with the carrier, the machine first installs the cover plate, and then flips it to face the back. The equipment first cuts the back side, and then flips it to face the front side up to complete the front cutting. Due to the presence of the carrier and the cover plate, the products are all in the middle layer (sandwich), which can compress the product for cutting very well, and there will be no situation where the product moves like in single-sided cutting; double-platform forward and reverse cutting, this structure can give full play to the time share of the laser head, almost allowing it to be in a processing state all the time, without waiting time, and can exert the highest machine efficiency.

[0110] It should be noted that the various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0111] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0112] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0113] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to 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, 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 avoidance positions, transfer positions and laser processing positions in sequence along the y direction; 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 on the end sides 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).

2. The laser cutting device according to claim 2, 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 turning 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 conveying belt (83) is disposed on both the first side plate (81) and the second side plate (82); A belt driving mechanism (84) for driving the conveying belt (83) to move; In-place blocking components (85), respectively arranged on the front side and / or the rear side of each conveying belt (83), for blocking the product when the product is in-place; 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 overturning 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 arranged on the inner side of the corresponding flip plate (34) and is used for clamping and conveying the carrier; and The turning plate driver (36) is used to drive the turning plate (34) to turn.

6. The laser cutting device according to claim 5, characterized in that: The overturning belt line (3) further comprises a distance adjustment mechanism (37); The first mounting seat (32) is mounted on a guide rail (38) of the base plate (31); The distance adjustment mechanism (37) comprises: A pitch-adjusting screw rod (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 rod nut; and The screw driver (372) is used to drive the pitch-adjusting screw (371) to rotate.

7. The laser cutting equipment according to claim 1, characterized in that: The cutting platform comprises: A box body (221) having an opening at its upper end; Two moving belts (222) are respectively arranged on opposite side walls of the box body (221); a fixing plate (223) is arranged on the box body (221) above the moving belts (222); The lifting assembly (224) is used to press the product against the lower surface of the fixing plate (223) after the product is in place.

8. The laser cutting device according to claim 1, characterized in that: The cover plate retracting and unfolding device (6) comprises: two uprights (61); A linear moving mechanism (62) arranged along the x-direction, with two ends thereof respectively mounted on the pillars (61); A cover plate grabbing mechanism (63) is mounted on a moving plate of the linear moving mechanism (62) via a lifting device (64); and The cover plate storage position (65) is fixed on the linear moving mechanism (62).

9. A laser cutting method using the laser cutting device according to any one of claims 1 to 8, 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 the n+1th product covered with the cover plate is conveyed to the flipping belt line, flipped to the reverse side facing upward, and then conveyed 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 to flip 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 discharging device, and the cover plate retracting device recycles the cover plate on the discharging 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.

10. A laser cutting system using the laser cutting device according to any one of claims 1 to 8, characterized in that: include: Two laser cutting devices connected in series; in The laser cutting equipment located upstream cuts one side of the product, and the laser cutting equipment located downstream is used to cut the other side of the product.

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