CN213825664U

CN213825664U - Door leaf UV finish paint roller coat line

Info

Publication number: CN213825664U
Application number: CN202022280214.2U
Authority: CN
Inventors: 杨振; 胡万宽; 戴福良; 马运华
Original assignee: Henan Hengda Oupai Door Industry Co ltd
Current assignee: Henan Oupai Door Industry Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-07-30
Anticipated expiration: 2030-10-14

Abstract

The utility model belongs to the technical field of door plant processing, specifically be door leaf UV finish coat roller coat line, including unable adjustment base, roller coater, upset machine body, two dust shaker bodies, first conveyer belt, second conveyer belt and third conveyer belt are all installed on the unable adjustment base, the upset machine body sets up between two the dust shaker bodies, first conveyer belt and the second conveyer belt sets up respectively in two one side that the dust shaker body was kept away from each other, the third conveyer belt sets up the right side at the roller coater; the utility model discloses, can carry out UV lacquer roller coat many times to the upper and lower two sides of door plant simultaneously, and can carry out the layering solidification, the solidification is effectual, and the roller coat is efficient, and intensity of labour is little, and the practicality is strong.

Description

Door leaf UV finish paint roller coat line

Technical Field

The utility model belongs to the technical field of the door plant processing, concretely relates to door leaf UV finish paint roller coat line.

Background

The UV paint is the most environment-friendly paint which is the furniture paint widely applied and has excellent yellowing resistance and is used for a roller coater of roller coating UV paint. The roller coater is an important device in a series of coating equipment machinery, has the characteristics of small paint loss, high production efficiency and simple and convenient maintenance, can be well butted with a production line, and forms a production line with higher automation degree.

Traditional UV roller coat production line, when carrying out UV finish paint roller coat to the door plant, often can only carry out the roller coat to the upper surface of door plant, and need use multiunit roller coat machine to roll repeatedly the roller coat, the flow is more loaded down with trivial details, if need roll coat to the another side of door plant, then need carry the door plant to the starting point and roll coat again, efficiency is not high and the amount of labour is big, the workman is painstaking, also set up upset door plant of upset machine body between two the same roller coat lines, carry out roller coat UV finish paint to the two sides of door plant, this kind of mode also can alleviate workman's intensity of labour, nevertheless need the equipment of purchasing more, the cost input is higher, and area is also great, to above-mentioned condition, the fan UV finish paint roller coat line now is proposed, can directly carry out UV finish paint to the two sides of door plant, efficiency is higher, intensity of labour is little, the cost input is less.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a door leaf UV finish paint roller coat line has and can directly carries out UV finish paint roller coat to the two sides of door plant, and efficiency is higher, and intensity of labour is little, the less characteristics of cost input.

In order to achieve the above object, the utility model provides a following technical scheme: door leaf UV finish paint roller coat line, including unable adjustment base, roller coater, upset machine body, two dust shaker bodies, first conveyer belt, second conveyer belt and third conveyer belt are all installed on unable adjustment base, the upset machine body sets up two between the dust shaker body, first conveyer belt and the second conveyer belt sets up respectively in two one side that the dust shaker body was kept away from each other, the third conveyer belt sets up the right side of roller coater, the inner wall upper surface fixed connection of roller coater has two first cylinders, two second cylinders and two third cylinders, the drive end fixed connection of two first cylinders has first mounting panel, the drive end fixed connection of two second cylinders has the second mounting panel, the bottom fixed connection of first mounting panel has two first flexible subassemblies, two first flexible subassembly's the equal fixedly connected with first mounting bracket of flexible end, two install first roller through bearing and pivot between the first mounting bracket, two flexible subassemblies of bottom fixedly connected with of second mounting panel, two the equal fixedly connected with second mounting bracket of flexible end of second flexible subassembly, two install the second roller through bearing and pivot between the second mounting bracket, the drive end of two third cylinders is fixed even has the third mounting panel, the bottom fixedly connected with two flexible subassemblies of third mounting panel, two the equal fixedly connected with third mounting bracket of drive end of third flexible subassembly, two install first radium-shine compression roller through bearing and pivot between the third mounting bracket, the rear side inner wall fixedly connected with three displacement sensor of roller coater, surface fixedly connected with first UV solidification machine on the inner wall of roller coater, The roller coating machine comprises a second UV curing machine and a third UV curing machine, wherein the lower surface of the inner wall of the roller coating machine is fixedly connected with two fourth mounting frames, two fifth mounting frames and two sixth mounting frames, a third coating roller is installed between the two fourth mounting frames through a bearing and a rotating shaft, a fourth coating roller is installed between the two fifth mounting frames through a bearing and a rotating shaft, a second laser compression roller is installed between the two sixth mounting frames through a bearing and a rotating shaft, the lower surface of the inner wall of the roller coating machine is fixedly provided with a fourth UV curing machine, a fifth UV curing machine and a sixth UV curing machine, driving motors are fixedly installed on the first mounting frame, the second mounting frame, the third mounting frame, the fourth mounting frame, the fifth mounting frame and the sixth mounting frame, the front surface of the roller coating machine is fixedly connected with a PLC (programmable logic controller), the back surface of the roller coating machine is fixedly connected with a paint box, and a pump body is arranged on the paint box, the pump body is communicated with the roller coater through a guide pipe, and a backflow outlet of the roller coater is communicated with the paint box through a backflow pipe.

Preferably, the first UV curing machine is located between the first coating roller and the second coating roller, the second UV curing machine is located between the second coating roller and the first laser pressing roller, the third UV curing machine is located on the right side of the first laser pressing roller, the fourth UV curing machine is located between the third coating roller and the fourth coating roller, the fifth UV curing machine is located between the fourth coating roller and the second laser pressing roller, and the sixth UV curing machine is located on the right side of the second laser pressing roller.

Preferably, the first coating roller and the third coating roller are opposite to each other in the vertical direction, the second coating roller and the fourth coating roller are opposite to each other in the vertical direction, the first laser pressing roller and the second laser pressing roller are opposite in the vertical direction, the first UV curing machine and the fourth UV curing machine are opposite in the vertical direction, the second UV curing machine and the fifth UV curing machine are opposite in the vertical direction, and the third UV curing machine and the sixth UV curing machine are opposite in the vertical direction.

Preferably, the first telescopic assembly and the second and third telescopic assemblies have the same structure, the first telescopic assembly comprises a sleeve, a pressure sensor is fixedly connected in the sleeve, a spring is fixedly connected on the pressure sensor, a telescopic rod is fixedly connected to the free end of the spring, a telescopic sleeve is fixedly connected in the sleeve, the telescopic rod penetrates through the telescopic sleeve, and the free end of the telescopic rod is a telescopic end.

Preferably, the first UV curing machine, the second UV curing machine, the fourth UV curing machine and the fifth UV curing machine all have built-in gallium lamp-mercury lamps with curing energies of 130 mj/cm-140 mj/cm, and the third UV curing machine and the sixth UV curing machine all have built-in gallium lamp-three mercury lamps with curing energies of 370 mj/cm-390 mj/cm.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses, can carry out UV lacquer roller coat many times to the upper and lower two sides of door plant simultaneously, and can carry out the layering solidification, the solidification is effectual, and the roller coat is efficient, and intensity of labour is little, and the practicality is strong.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional view of the roll coater of the present invention;

FIG. 3 is a schematic view of a rear view structure of the roll coater of the present invention;

fig. 4 is a schematic cross-sectional structural view of the first telescopic assembly of the present invention;

in the figure: 1. a fixed base; 2. a PLC controller; 3. a first conveyor belt; 4. a dust remover body; 5. a tilter body; 6. a second conveyor belt; 7. a roller coater; 8. a third conveyor belt; 9. a first cylinder; 10. a first mounting plate; 11. a first telescoping assembly; 111. a sleeve; 112. a telescopic sleeve; 113. a telescopic rod; 114. a spring; 115. a pressure sensor; 12. a first mounting bracket; 13. a drive motor; 14. a first coating roller; 15. a displacement sensor; 16. a third coating roller; 17. a fourth mounting bracket; 18. a fourth UV curing machine; 19. a fourth coating roller; 20. a fifth mounting bracket; 21. a fifth UV curing machine; 22. a sixth mounting bracket; 23. a second laser compression roller; 24. a sixth UV curing machine; 25. a second coating roller; 26. a first laser compression roller; 27. a third mounting bracket; 28. a third telescoping assembly; 29. a third mounting plate; 30. a third cylinder; 31. a third UV curing machine; 32. a second UV curing machine; 33. a second cylinder; 34. a second telescoping assembly; 35. a second mounting plate; 36. a second mounting bracket; 37. a return pipe; 38. a paint box; 39. a pump body; 40. a conduit; 41. a first UV curing machine.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides the following technical solutions: door leaf UV finish paint roller coat line, including unable adjustment base 1, roller coater 7, upset machine body 5, two dust shaker bodies 4, first conveyer belt 3, second conveyer belt 6 and third conveyer belt 8, upset machine body 5 sets up between two dust shaker bodies 4, upset machine body 5, two dust shaker bodies 4, first conveyer belt 3, second conveyer belt 6 and third conveyer belt 8 are all installed on unable adjustment base 1, first conveyer belt 3 and second conveyer belt 6 set up respectively in two one side that dust shaker bodies 4 kept away from each other, third conveyer belt 8 sets up the right side of roller coater 7, need carry out roller coat UV finish paint through first conveyer belt 3 and get into first dust shaker body 4, the door plant is after the dust removal of first dust shaker body 4, is conveyed to in upset machine body 5, upset door plant is controlled to upset machine body 5, then the door plate is conveyed into a second dust remover body 4, dust is removed from the other side of the door plate, after dust removal is completed, the door plate is conveyed into a roller coater 7 through a second conveyor belt 6, two first air cylinders 9, two second air cylinders 33 and two third air cylinders 30 are fixedly connected to the upper surface of the inner wall of the roller coater 7, the driving ends of the two first air cylinders 9 are fixedly connected with a first mounting plate 10, the driving ends of the two second air cylinders 33 are fixedly connected with a second mounting plate 35, the bottom of the first mounting plate 10 is fixedly connected with two first telescopic assemblies 11, the telescopic ends of the two first telescopic assemblies 11 are fixedly connected with a first mounting frame 12, a first coating roller 14 is arranged between the two first mounting frames 12 through a bearing and a rotating shaft, the bottom of the second mounting plate 35 is fixedly connected with two second telescopic assemblies 34, and the telescopic ends of the two second telescopic assemblies 34 are both fixedly connected with a second mounting frame 36, the second coating roller 25 is installed between the two second installation frames 36 through a bearing and a rotating shaft, the driving ends of the two third cylinders 30 are fixedly connected with a third installation frame 29, the bottom of the third installation frame 29 is fixedly connected with two third telescopic assemblies 28, the driving ends of the two third telescopic assemblies 28 are both fixedly connected with a third installation frame 27, a first laser compression roller 26 is installed between the two third installation frames 27 through a bearing and a rotating shaft, the inner wall of the rear side of the roller coater 7 is fixedly connected with three displacement sensors 15, the upper surface of the inner wall of the roller coater 7 is fixedly connected with a first UV curing machine 41, a second UV curing machine 32 and a third UV curing machine 31, the lower surface of the inner wall of the roller coater 7 is fixedly connected with two fourth installation frames 17, two fifth installation frames 20 and two sixth installation frames 22, and the third coating roller 16 is installed between the two fourth installation frames 17 through a bearing and a rotating shaft, a fourth coating roller 19 is installed between the two fifth installation frames 20 through a bearing and a rotating shaft, a second laser compression roller 23 is installed between the two sixth installation frames 22 through a bearing and a rotating shaft, a fourth UV curing machine 18, a fifth UV curing machine 21 and a sixth UV curing machine 24 are fixedly installed on the lower surface of the inner wall of the roller coater 7, driving motors 13 are fixedly installed on the first installation frame 12, the second installation frame 36, the third installation frame 27, the fourth installation frame 17, the fifth installation frame 20 and the sixth installation frame 22, a PLC controller 2 is fixedly connected to the front surface of the roller coater 7, the PLC controller 2 is externally connected with a mains supply, the PLC controller 2 can control the operation of the driving motors 13, the pump body 39 and the three displacement sensors 15, and the PLC controller 2 can also control the operation of the first conveyor belt 3, the second conveyor belt 6, the third conveyor belt 8, the dust remover body 4 and the tilter body 5, the back of the roller coater 7 is fixedly connected with a paint box 38, the paint box 38 is provided with a pump body 39, the pump body 39 is communicated with the roller coater 7 through a guide pipe 40, a backflow outlet of the roller coater 7 is communicated with the paint box 38 through a backflow pipe 37, a door panel entering the roller coater 7 is detected by a displacement sensor 15 at the leftmost side, the PLC controller 2 immediately controls the first coating roller 14 and the third coating roller 16 to rotate, so that the door panel is roll-coated, meanwhile, the PLC controller 2 controls the first UV curing machine 41 and the third UV curing machine 31 to cure UV paint on the upper surface and the lower surface of the door panel, when the second displacement sensor 15 detects that the door panel passes through, the PLC controller 2 automatically controls the second coating roller 25 and the fourth coating roller 19 to roll coat the UV paint on the door panel, and controls the second UV curing machine 32 and the fourth UV curing machine 18 to cure the UV paint on the upper surface and the lower surface of the door panel, when the third displacement sensor 15 detects that the door plate passes through, the PLC controller 2 controls the first laser pressing roller 26 and the second laser pressing roller 23 to perform UV roller coating varnish on the door plate, and controls the third UV curing machine 31 and the sixth UV curing machine 24 to perform UV varnish curing on the upper surface and the lower surface of the door plate.

Specifically, the first UV curing machine 41 is located between the first coating roller 14 and the second coating roller 25, the second UV curing machine 32 is located between the second coating roller 25 and the first laser pressing roller 26, the third UV curing machine 31 is located on the right side of the first laser pressing roller 26, the fourth UV curing machine 18 is located between the third coating roller 16 and the fourth coating roller 19, the fifth UV curing machine 21 is located between the fourth coating roller 19 and the second laser pressing roller 23, and the sixth UV curing machine 24 is located on the right side of the second laser pressing roller 23.

Specifically, the first coating roller 14 is vertically opposite to the third coating roller 16, the second coating roller 25 is vertically opposite to the fourth coating roller 19, the first laser pressing roller 26 is vertically opposite to the second laser pressing roller 23, the first UV curing machine 41 is vertically opposite to the fourth UV curing machine 18, the second UV curing machine 32 is vertically opposite to the fifth UV curing machine 21, and the third UV curing machine 31 is vertically opposite to the sixth UV curing machine 24.

Specifically, first flexible subassembly 11 with the structure of the flexible subassembly of second 34, the flexible subassembly 28 of third is the same completely, first flexible subassembly 11 includes sleeve 111, fixedly connected with pressure sensor 115 in the sleeve 111, fixedly connected with spring 114 on the pressure sensor 115, the free end fixedly connected with telescopic link 113 of spring 114, fixedly connected with telescopic sleeve 112 in the sleeve 111, telescopic link 113 passes telescopic sleeve 112, telescopic link 113's free end is flexible end.

In particular, the first UV curing machine 41, the second UV curing machine 32, the fourth UV curing machine 18 and the fifth UV curing machine 21 are all provided with a gallium lamp-mercury lamp having curing energy of 130 mj/cm-140 mj/cm, the third UV curing machine 31 and the sixth UV curing machine 24 are all provided with a gallium lamp-mercury lamp-three mercury lamp having curing energy of 370 mj/cm-390 mj/cm.

The utility model discloses a theory of operation and use flow: when the roller coater is used, firstly, a door panel is placed on a first conveyor belt 3, the door panel is conveyed into a first dust remover body 4 by the first conveyor belt 3 for dust removal, the door panel is conveyed into a turnover machine body 5 rightwards after dust removal of the first dust remover body 4 is finished, the door panel is conveyed into a second dust remover body 4 after the turnover of the door panel is controlled by the turnover machine body 5, after dust removal is finished, the door panel is conveyed onto a second conveyor belt 6 by the second dust remover body 4, the door panel is conveyed into the roller coater 7 by the second conveyor belt 6, the door panel entering the roller coater 7 is detected by a displacement sensor 15 at the leftmost side, a PLC (programmable logic controller) controller 2 automatically controls a first air cylinder 9 to be started, the first air cylinder 9 drives a first mounting plate 10 to move downwards, the first mounting plate 10 drives a first mounting frame 12 to move downwards through a first telescopic component 11, the first mounting frame 12 electrically drives a first coating roller 14 to move downwards, so that the first coating roller 14 is pressed on the door panel, the PLC controller 2 immediately controls the first coating roller 14 and the third coating roller 16 to rotate so as to roll coat the door panel, meanwhile, the PLC controller 2 controls the first UV curing machine 41 and the third UV curing machine 31 to cure the UV paint on the upper surface and the lower surface of the door panel, when the second displacement sensor 15 detects that the door panel passes through, the PLC controller 2 automatically controls the second air cylinder 33 to start, the second air cylinder 33 drives the second mounting plate 35 to move downwards, the second mounting plate 35 drives the second mounting frame 36 to move downwards through the second telescopic assembly 34, the second mounting frame 36 electrically drives the second coating roller 25 to move downwards, so that the second coating roller 25 presses on the door panel, the PLC controller 2 automatically controls the second coating roller 25 and the fourth coating roller 19 to roll coat the UV paint on the door panel, simultaneously controls the second UV curing machine 32 and the fourth UV curing machine 18 to cure the UV paint on the upper surface and the lower surface of the door panel, when the third displacement sensor 15 detects that the door panel passes through, PLC controller 2 automatic control third cylinder 30 starts, third cylinder 30 drives third mounting panel 29 downwards, third mounting panel 29 drives third mounting bracket 27 downwards through third telescopic component 28, third mounting bracket 27 is electronic first radium-shine compression roller 26 downwards, thereby make first radium-shine compression roller 26 oppress on the door plant, PLC controller 2 control first radium-shine compression roller 26 and second radium-shine compression roller 23 carry out UV roller coat finish to the door plant, control third UV solidification machine 31 and sixth UV solidification machine 24 simultaneously carry out UV finish solidification to upper and lower two faces of door plant, finally, the door plant is conveyed on third conveyer belt 8 by roller coat machine 7, carry out subsequent technology and handle can.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Door leaf UV finish paint roller coat line, including unable adjustment base (1), roller coater (7), upset machine body (5), two dust shaker bodies (4), first conveyer belt (3), second conveyer belt (6) and third conveyer belt (8), its characterized in that: the turnover machine body (5), the two dust remover bodies (4), the first conveyor belt (3), the second conveyor belt (6) and the third conveyor belt (8) are all installed on the fixed base (1), the turnover machine body (5) is arranged between the two dust remover bodies (4), the first conveyor belt (3) and the second conveyor belt (6) are respectively arranged on one sides, far away from each other, of the two dust remover bodies (4), the third conveyor belt (8) is arranged on the right side of the roller coater (7), two first cylinders (9), two second cylinders (33) and two third cylinders (30) are fixedly connected to the upper surface of the inner wall of the roller coater (7), the driving ends of the two first cylinders (9) are fixedly connected with the first mounting plate (10), the driving ends of the two second cylinders (33) are fixedly connected with the second mounting plate (35), the bottom of the first mounting plate (10) is fixedly connected with two first telescopic assemblies (11), the telescopic ends of the two first telescopic assemblies (11) are fixedly connected with a first mounting frame (12), a first coating roller (14) is installed between the two first mounting frames (12) through a bearing and a rotating shaft, the bottom of the second mounting plate (35) is fixedly connected with two second telescopic assemblies (34), the telescopic ends of the two second telescopic assemblies (34) are fixedly connected with a second mounting frame (36), a second coating roller (25) is installed between the two second mounting frames (36) through a bearing and a rotating shaft, the driving ends of the two third cylinders (30) are fixedly connected with a third mounting plate (29), the bottom of the third mounting plate (29) is fixedly connected with two third telescopic assemblies (28), and the driving ends of the two third telescopic assemblies (28) are fixedly connected with a third mounting frame (27), install first radium-shine compression roller (26) through bearing and pivot between two third mounting bracket (27), the rear side inner wall fixedly connected with three displacement sensor (15) of roll coater (7), fixed surface is connected with first UV solidification machine (41), second UV solidification machine (32) and third UV solidification machine (31) on the inner wall of roll coater (7), fixed surface is connected with two fourth mounting bracket (17), two fifth mounting bracket (20) and two sixth mounting bracket (22) under the inner wall of roll coater (7), install third coating roller (16) through bearing and pivot between two fourth mounting bracket (17), install fourth coating roller (19) through bearing and pivot between two fifth mounting bracket (20), install second radium-shine compression roller (23) through bearing and pivot between two sixth mounting bracket (22), fixed surface installs fourth UV solidification machine (18), fifth UV solidification machine (21) and sixth UV solidification machine (24) under the inner wall of roller coater (7), equal fixed mounting has driving motor (13) on first mounting bracket (12), second mounting bracket (36), third mounting bracket (27), fourth mounting bracket (17), fifth mounting bracket (20) and sixth mounting bracket (22), the positive fixedly connected with PLC controller (2) of roller coater (7), the back fixedly connected with paint box (38) of roller coater (7), be provided with pump body (39) on paint box (38), the pump body (39) through pipe (40) with roller coater (7) are linked together, the backward flow export of roller coater (7) pass through back pipe (37) with paint box (38) are linked together.

2. The door leaf UV topcoat roll coating line of claim 1, wherein: the first UV curing machine (41) is located between the first coating roller (14) and the second coating roller (25), the second UV curing machine (32) is located between the second coating roller (25) and the first laser pressing roller (26), the third UV curing machine (31) is located on the right side of the first laser pressing roller (26), the fourth UV curing machine (18) is located between the third coating roller (16) and the fourth coating roller (19), the fifth UV curing machine (21) is located between the fourth coating roller (19) and the second laser pressing roller (23), and the sixth UV curing machine (24) is located on the right side of the second laser pressing roller (23).

3. The door leaf UV topcoat roll coating line of claim 1, wherein: the first coating roller (14) and the third coating roller (16) are opposite to each other in the vertical direction, the second coating roller (25) and the fourth coating roller (19) are opposite to each other in the vertical direction, the first laser pressing roller (26) and the second laser pressing roller (23) are opposite to each other in the vertical direction, the first UV curing machine (41) and the fourth UV curing machine (18) are opposite to each other in the vertical direction, the second UV curing machine (32) and the fifth UV curing machine (21) are opposite to each other in the vertical direction, and the third UV curing machine (31) and the sixth UV curing machine (24) are opposite to each other in the vertical direction.

4. The door leaf UV topcoat roll coating line of claim 1, wherein: first flexible subassembly (11) with the structure of the flexible subassembly of second (34), the flexible subassembly of third (28) is the same completely, first flexible subassembly (11) is including sleeve (111), fixedly connected with pressure sensor (115) in sleeve (111), fixedly connected with spring (114) on pressure sensor (115), free end fixedly connected with telescopic link (113) of spring (114), the flexible cover (112) of fixedly connected with in sleeve (111), telescopic link (113) pass flexible cover (112), the free end of telescopic link (113) is flexible end.

5. The door leaf UV topcoat roll coating line of claim 1, wherein: the first UV curing machine (41), the second UV curing machine (32), the fourth UV curing machine (18) and the fifth UV curing machine (21) are provided with a gallium lamp-mercury lamp having curing energy of 130 mj/cm-140 mj/cm, the third UV curing machine (31) and the sixth UV curing machine (24) are provided with a gallium lamp-three mercury lamp having curing energy of 370 mj/cm-390 mj/cm.