An edge cutting mechanism, slitting device and gypsum board production line

Abstract

An edge cutting mechanism, a slitting device and a gypsum board production line. The edge cutting mechanism is used for trimming of a board, the board comprising a board body and a cover paper wrapped on the board body, the edge cutting mechanism comprising: a lower auxiliary saw assembly, an upper auxiliary saw assembly and a main saw. The lower auxiliary saw assembly comprises a lower auxiliary saw, which is located below the board and is used for cutting the lower part of the cover paper of the board. The upper auxiliary saw assembly comprises an upper auxiliary saw, which is located above the board and is used for cutting the upper part of the cover paper of the board. The main saw is located downstream of the upper auxiliary saw and the lower auxiliary saw in the direction of the board travel. The main saw is used for cutting the board body. By arranging the upper auxiliary saw and the lower auxiliary saw upstream of the main saw, the upper auxiliary saw and the lower auxiliary saw cut the upper part and the lower part of the rear end cover paper respectively, and the board body can provide support, so that better cutting of the rear end cover paper of the board is realized, the broken section is smoother, and it is beneficial to avoid that the broken section after cutting still carries excess material.

Description

TECHNICAL FIELD

[0001] The present application relates to the gypsum board production technology, in particular to a side cutting mechanism, a cutting device and a gypsum board production line. BACKGROUND

[0002] In the gypsum board production, the cutting device is used for cutting the gypsum board. The cut gypsum board is transported to the drying machine system. The cut gypsum board needs to be cut and trimmed by the cutting device. The cutting refers to cutting the long board into 2-3 boards with the size meeting the international standard. The trimming refers to trimming the edges of the board and crushing the excess material. The cutting device plays an important role in the whole gypsum board production process. The board processed by the cutting device is finally shaped. After the subsequent stacking and packaging process, the board can be transported to the market.

[0003] The trimming is completed by the side cutting mechanism of the cutting device. Each outer surface of the board is covered with a cover paper. The front end of the board refers to the end of the board first contacting the sawing tool of the cutting device. The rear end of the board refers to the end of the board last leaving the sawing tool. The advancing direction of the board refers to the direction from the rear end of the board to the front end of the board.

[0004] The existing side cutting mechanism cannot perfectly cut the cover paper on the rear end of the board when cutting the rear end of the board because the rear end of the board lacks support. The cut surface is not smooth, and even the cut surface still carries excess material after cutting. SUMMARY

[0005] The side cutting mechanism, the cutting device and the gypsum board production line provided by the embodiments of the present application realize better cutting of the rear end of the board, the cut surface is smoother, and the cut surface is beneficial to avoid carrying excess material after cutting.

[0006] In a first aspect, the embodiments of the present application provide a side cutting mechanism for trimming a board, the board including a board body and a cover paper wrapped on the board body, the side cutting mechanism comprising: a lower auxiliary saw assembly including a lower auxiliary saw, the lower auxiliary saw being located below the board and used for cutting the cover paper on a lower part of the board, the cover paper on the lower part of the board including the cover paper on a lower surface of the board and the cover paper on lower parts of front and rear end surfaces of the board; an upper auxiliary saw assembly including an upper auxiliary saw, the upper auxiliary saw being located above the board and used for cutting the cover paper on an upper part of the board, the cover paper on the upper part of the board including the cover paper on an upper surface of the board and the cover paper on upper parts of front and rear end surfaces of the board; and a main saw located downstream of the advancing direction of the board relative to the upper auxiliary saw and the lower auxiliary saw, the main saw being used for cutting the board body.

[0007] The edge cutting mechanism of the embodiment of the present application can provide support for the board body when the upper auxiliary saw and the lower auxiliary saw cut the upper part and the lower part of the back end face protective paper respectively, so that better cutting of the back end face protective paper of the board is realized, the broken surface is smoother, and the residual material carried on the broken surface after cutting can be avoided.

[0008] In an example embodiment, the upper auxiliary saw assembly is mounted on the frame, and the upper auxiliary saw assembly is movably connected to the frame; the upper auxiliary saw assembly is arranged to move between a first position for cutting the upper protective paper of the board and a second position away from the board relative to the frame. Through this embodiment, the upper auxiliary saw in the first position can cut the upper protective paper of the board, and the second position is away from the board. When the upper auxiliary saw assembly moves from the first position to the second position, cutting of the back end face protective paper of the board can be realized.

[0009] In an example embodiment, the position of the upper auxiliary saw is raised from the second position to the first position. Through this embodiment, the upper auxiliary saw can realize cutting of the upper part and the middle part of the back end face protective paper.

[0010] In an example embodiment, the position of the upper auxiliary saw assembly is raised at least under the action of the force of the board from the second position to the first position; and the position of the upper auxiliary saw assembly is lowered at least under the action of its own gravity from the first position to the second position.

[0011] In an example embodiment, the upper auxiliary saw assembly further comprises a support member, the support member is rotatably connected to the frame, the upper auxiliary saw is rotatably mounted on the support member, and the rotation axis of the upper auxiliary saw is arranged to be staggered with the rotation axis of the support member, so that the upper auxiliary saw assembly swings between the first position and the second position relative to the frame. Through this embodiment, the upper auxiliary saw assembly swings between the first position and the second position relative to the frame is realized.

[0012] In an example embodiment, the support member comprises: a support plate, the upper auxiliary saw is rotatably mounted on the support plate, one end of the support plate is rotatably connected to the frame; and a support rod connected to the support plate and extending away from the upper auxiliary saw, the support rod is arranged to be subjected to a force to provide movement power and / or movement resistance for the upper auxiliary saw assembly.

[0013] In an example embodiment, the edge cutting mechanism further comprises: an elastic member cooperating with the frame and the upper auxiliary saw assembly, and arranged to provide movement resistance and / or movement resistance for the upper auxiliary saw assembly.

[0014] In an exemplary embodiment, during the movement of the upper auxiliary saw assembly from the second position to the first position, the elastic deformation of the elastic member gradually decreases and then gradually increases. Through this embodiment, it is beneficial to initially drive the upper auxiliary saw to move upward with the maximum movement power, and it is also beneficial to gradually increase the movement resistance to make the upper auxiliary saw smoothly transit from movement to stillness in the later period.

[0015] In an exemplary embodiment, when the upper auxiliary saw assembly further comprises a support member and the support member comprises a support plate and a support rod, one end of the elastic member is limited to the rack, and the other end of the elastic member is limited to the support rod.

[0016] In an exemplary embodiment, the rack comprises a fixed table arranged opposite to the support rod, the fixed table is provided with a limiting column, the elastic member is a spring, the spring is sleeved on the limiting column, one end of the spring is limited to the fixed table, and the other end of the spring is limited to the support rod. Through this embodiment, it is beneficial to limit the working position of the spring and avoid the spring from falling off.

[0017] In an exemplary embodiment, the upper auxiliary saw and the lower auxiliary saw are arranged opposite to each other in the up-down direction. Through this embodiment, it is beneficial to compactly arrange the edge cutting mechanism, thereby saving limited space; it is also beneficial to the stability of cutting, because the upper auxiliary saw can provide downward pressure to the plate when the lower auxiliary saw cuts, and the lower auxiliary saw can provide upward support force to the plate when the upper auxiliary saw cuts.

[0018] In an exemplary embodiment, when the upper auxiliary saw assembly is in the second position, the distance between the bottom end of the upper auxiliary saw and the top end of the lower auxiliary saw is 2mm to 4mm. Through this embodiment, the upper auxiliary saw can complete the cutting of the upper part and the middle part of the protective paper of the rear end surface of the plate body.

[0019] In an exemplary embodiment, when the upper auxiliary saw assembly is in the first position, the bottom end of the upper auxiliary saw is lower than the upper surface of the plate, and the distance between the bottom end of the upper auxiliary saw and the upper surface of the plate is 2mm to 4mm. Through this embodiment, the upper auxiliary saw can cut the upper protective paper when the upper auxiliary saw assembly is in the first position.

[0020] In a second aspect, the embodiments of the present application further provide a slitting device, which comprises the edge cutting mechanism described above.

[0021] The slitting device of the embodiment of the present application, the edge cutting mechanism of the slitting device can provide support for the plate body when the upper auxiliary saw and the lower auxiliary saw are arranged upstream of the main saw and cut the upper part and the lower part of the back end face cover paper, so that better cutting of the back end face cover paper of the plate is realized, the broken section is smoother, and it is beneficial to avoid that the broken section still carries excess material after cutting.

[0022] In a third aspect, the embodiment of the present application also provides a gypsum board production line, which comprises the above slitting device.

[0023] The gypsum board production line of the embodiment of the present application, the edge cutting mechanism of the gypsum board production line can provide support for the plate body when the upper auxiliary saw and the lower auxiliary saw are arranged upstream of the main saw and cut the upper part and the lower part of the back end face cover paper, so that better cutting of the back end face cover paper of the plate is realized, the broken section is smoother, and it is beneficial to avoid that the broken section still carries excess material after cutting.

[0024] Other features and advantages of the present 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 present application. Other advantages of the present application can be realized and obtained by means of the solutions described in the description and the claims. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings are included to provide an understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the technical solutions of the present application, and do not constitute a limitation on the technical solutions of the present application.

[0026] Figure 1 It is a top view of the slitting device of the embodiment of the present application;

[0027] Figure 2 It is a structural schematic view of the edge cutting mechanism of the embodiment of the present application, wherein the upper auxiliary saw assembly is located at the second position;

[0028] Figure 3 It is a structural schematic view of the edge cutting mechanism of the embodiment of the present application, wherein the upper auxiliary saw assembly is located at the first position.

[0029] Reference signs:

[0030] 1-plate; 2-main saw; 3-upper auxiliary saw; 4-lower auxiliary saw; 5-motor; 6-intermediate saw; 7-rack; 8-elastic member; 9-supporting plate; 10-supporting rod; 11-fixing table; 12-limiting column. DETAILED DESCRIPTION

[0031] In order to make the objects, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. It should be noted that the embodiments herein and the features in the embodiments can be combined with each other without conflict.

[0032] As shown in Figures 1 to 3 The embodiments of the present application provide an edge cutting mechanism for trimming of a board 1, the board 1 comprising a board 1 body and a cover paper wrapped around the board 1 body, the edge cutting mechanism comprising a lower auxiliary saw assembly, an upper auxiliary saw assembly and a main saw 2.

[0033] Figure 2 And Figure 3 The arrow direction in the figure is the running direction of the board.

[0034] The lower auxiliary saw assembly comprises a lower auxiliary saw 4, which is located below the board 1 and is used to cut the cover paper at the lower part of the board 1, the cover paper at the lower part of the board 1 comprising the cover paper on the lower surface of the board 1 and the cover paper at the lower part of the front and rear end surfaces of the board 1.

[0035] The upper auxiliary saw assembly comprises an upper auxiliary saw 3, which is located above the board 1 and is used to cut the cover paper at the upper part of the board 1, the cover paper at the upper part of the board 1 comprising the cover paper on the upper surface of the board 1 and the cover paper at the upper part of the front and rear end surfaces of the board 1.

[0036] The main saw 2 is located downstream of the running direction of the board 1 relative to the upper auxiliary saw 3 and the lower auxiliary saw 4; the main saw 2 is used to cut the board 1 body.

[0037] The board 1 can comprise two or more than two stacked sub-boards 1. When the board 1 comprises a plurality of sub-boards 1, the upper cover paper of the top end sub-board 1 is the upper cover paper of the board 1, the lower cover paper of the bottom end sub-board 1 is the lower cover paper of the board 1. The rear end surface cover papers of the plurality of sub-boards 1 jointly constitute the rear end surface cover paper of the board 1. The front end surface cover papers of the plurality of sub-boards 1 jointly constitute the front end surface cover paper of the board 1.

[0038] The edge cutting mechanism in the prior art cannot perfectly cut the cover paper on the rear end surface of the board 1 when cutting the rear end of the board 1, because the rear end of the board 1 lacks support, resulting in a non-smooth cross section, and even the cross section after cutting still carries excess material.

[0039] In order to achieve perfect cutting of the cover paper on the rear end surface of the board 1, the upper auxiliary saw 3 plays a key role. The upper auxiliary saw 3 can cut the upper part of the cover paper on the rear end surface of the board 1. The lower part of the cover paper on the rear end surface of the board 1 is cut by the lower auxiliary saw 4. After the upper part and the lower part of the cover paper on the rear end surface of the board 1 are cut, the board 1 continues to move forward, and the remaining part of the cover paper on the rear end surface is cut by the downstream main saw 2, thereby completing the cutting of the cover paper on the rear end surface of the board 1.

[0040] When cutting the upper and lower parts of the end face protective paper of the board 1, the board 1 body can provide support for cutting, so that the cross section is smooth. At the same time, the remaining part has a small height, and the main saw 2 cutting will not easily cause the cross section to be not smooth. Therefore, perfect cutting of the end face protective paper can be achieved, the cross section is smooth, and the cross section after cutting will not carry excess material.

[0041] The lower auxiliary saw 4 is mainly used for cutting the protective paper on the lower surface of the board 1.

[0042] If there is no lower auxiliary saw 4, the lower auxiliary saw 4 cannot cut the lower protective paper in advance, and can only cut the lower protective paper by the main saw 2. In an example, the main saw 2 cuts in a clockwise direction, first cutting the board 1 body, and then cutting the lower protective paper. When cutting the lower protective paper, the board 1 body has been cut off and has no support, which can easily cause the cross section to be not smooth, and even the cross section after cutting still carries excess material.

[0043] Therefore, the lower auxiliary saw 4 is provided, which cuts the lower protective paper before the main saw 2 cuts the board 1 body. At this time, the board 1 body can provide support for cutting the lower protective paper, so that the cross section is smooth and the cross section after cutting will not carry excess material.

[0044] The edge cutting mechanism of the embodiment of the application, by providing the upper auxiliary saw 3 and the lower auxiliary saw 4 upstream of the main saw 2, when the upper auxiliary saw 3 and the lower auxiliary saw 4 cut the upper and lower parts of the end face protective paper respectively, the board 1 body can provide support, thereby achieving better cutting of the end face protective paper of the board 1, the cross section is smoother, and it is beneficial to avoid that the cross section after cutting still carries excess material.

[0045] In an example embodiment, as shown in Figure 2 and Figure 3 the upper auxiliary saw assembly is mounted to the rack 7, and the upper auxiliary saw assembly is movably connected to the rack 7; the upper auxiliary saw assembly is arranged to move between a first position for cutting the protective paper on the upper part of the board 1 and a second position away from the board 1 relative to the rack 7.

[0046] The upper auxiliary saw assembly is movably connected to the rack 7, so that the upper auxiliary saw 3 can move relative to the rack 7. The upper auxiliary saw assembly is arranged to move between a first position for cutting the protective paper on the upper part of the board 1 and a second position away from the board 1 relative to the rack 7. The first position is used for cutting the upper protective paper of the board 1, and the second position is a position away from the board 1. When the upper auxiliary saw assembly moves from the first position to the second position, cutting of the end face protective paper of the board 1 can be achieved.

[0047] Through this embodiment, the upper auxiliary saw 3 in the first position can cut the upper protective paper of the board 1, and the second position is a position away from the board 1. When the upper auxiliary saw assembly moves from the first position to the second position, cutting of the end face protective paper of the board 1 can be achieved.

[0048] In an exemplary embodiment, as shown in Figure 2 and Figure 3 the position of the upper auxiliary saw 3 is raised from the second position to the first position.

[0049] The upper auxiliary saw 3 can be raised and lowered by various mechanisms.

[0050] The first position is higher than the second position, and only the upper surface paper cutting is achieved at the first position. During the movement from the first position to the second position, the cutting of the rear end surface paper of the board 1 can be achieved, and at this time, the cutting of the rear end surface paper is the cutting of the upper and middle parts of the rear end surface paper.

[0051] By this embodiment, the cutting of the upper and middle parts of the rear end surface paper can be achieved by the upper auxiliary saw 3.

[0052] In an exemplary embodiment, the position of the upper auxiliary saw assembly is raised at least under the action of the board 1 from the second position to the first position; and the position of the upper auxiliary saw assembly is lowered at least under the action of its own gravity from the first position to the second position.

[0053] From the second position to the first position, the cutting surface of the upper auxiliary saw 3 gradually contacts the upper surface of the board 1, thereby lifting the upper auxiliary saw 3. From the first position to the second position, the upper auxiliary saw 3 gradually separates from the board 1, and thus can be lowered under the action of its own gravity.

[0054] In an exemplary embodiment, as shown in Figure 2 and Figure 3 The upper auxiliary saw assembly further comprises a support member, and the support member is rotatably connected with the frame 7. The upper auxiliary saw 3 is rotatably mounted on the support member, and the rotation axis of the upper auxiliary saw 3 is arranged to be staggered with the rotation axis of the support member, so that the upper auxiliary saw assembly swings relative to the frame 7 between the first position and the second position.

[0055] In an example, the frame 7 comprises a bracket, and the bracket provides support for the support member. A bracket bearing is connected between the bracket and the support member, and the rotation axis of the support member is the central axis of the bracket bearing. The support member can swing up and down with the rotation axis of the support member as the center.

[0056] The upper auxiliary saw 3 is mounted on the support member, and an upper auxiliary saw 3 bearing is connected between the upper auxiliary saw 3 and the support member, and the rotation axis of the upper auxiliary saw 3 is the central axis of the upper auxiliary saw 3 bearing.

[0057] By this embodiment, the swing of the upper auxiliary saw assembly relative to the frame 7 between the first position and the second position is achieved.

[0058] In an exemplary embodiment, as shown in Figure 2 and Figure 3As shown, the support member comprises a support plate 9 and a support rod 10. The upper auxiliary saw 3 is rotatably mounted on the support plate 9, and one end of the support plate 9 is rotatably connected to the frame 7. The support rod 10 is connected to the support plate 9 and extends away from the upper auxiliary saw 3, and is arranged to be subjected to an action force to provide a movement power and / or a movement resistance for the upper auxiliary saw assembly.

[0059] In one example, a bracket bearing is arranged at the connecting point of the support plate 9 and the support rod 10. The support member can swing up and down with the bracket bearing as the center. That is, when the support plate 9 swings down, the support rod 10 swings up; and when the support plate 9 swings up, the support rod 10 swings down, with the bracket bearing as the center.

[0060] The support rod 10 is arranged to be subjected to an action force to provide a movement power and / or a movement resistance for the upper auxiliary saw 3 connected to the support plate 9.

[0061] In one example, as shown in Figs. 1 and 2, the side cutting mechanism further comprises a resilient member 8. The resilient member 8 cooperates with the frame 7 and the upper auxiliary saw assembly to provide a movement resistance and / or a movement power for the upper auxiliary saw assembly. Figure 2 and Figure 3 In one example, as shown in Figs. 1 and 2, the side cutting mechanism further comprises a resilient member 8. The resilient member 8 cooperates with the frame 7 and the upper auxiliary saw assembly to provide a movement resistance and / or a movement power for the upper auxiliary saw assembly.

[0062] In one example, the resilient deformation of the resilient member 8 gradually decreases and then gradually increases during the movement of the upper auxiliary saw assembly from the second position to the first position.

[0063] In one example, the resilient deformation of the resilient member 8 gradually decreases and then gradually increases during the movement of the upper auxiliary saw assembly from the second position to the first position. The elastic force provided by the resilient member 8 gradually decreases and then gradually increases.

[0064] During the gradual decrease of the elastic force provided by the resilient member 8, the elastic force provides a movement power for the upper auxiliary saw 3. During the gradual increase of the elastic force provided by the resilient member 8, the elastic force provides a movement resistance for the upper auxiliary saw 3.

[0065] During the movement of the upper auxiliary saw assembly from the second position to the first position, the upper auxiliary saw 3 gradually rises from the lowest position to the highest position, and the support rod 10 gradually lowers from the highest position to the lowest position. When the support rod 10 is at the highest position, the movement power provided by the resilient member 8 reaches the maximum. When the support rod 10 is at the lowest position, the movement resistance provided by the resilient member 8 reaches the maximum.

[0066] That is, during the movement of the upper auxiliary saw assembly from the second position to the first position, the elastic member 8 first provides gradually decreasing movement power and then provides gradually increasing movement resistance. In this way, it is beneficial to initially drive the upper auxiliary saw 3 to move upward with maximum movement power and beneficial to later make the upper auxiliary saw 3 smoothly transit from movement to stillness with gradually increasing movement resistance.

[0067] Through this embodiment, it is beneficial to initially drive the upper auxiliary saw 3 to move upward with maximum movement power and beneficial to later make the upper auxiliary saw 3 smoothly transit from movement to stillness with gradually increasing movement resistance.

[0068] In one example, during the movement of the upper auxiliary saw assembly from the first position to the second position, the elastic deformation amount of the elastic member 8 gradually decreases and then gradually increases.

[0069] During the movement of the upper auxiliary saw assembly from the first position to the second position, the elastic deformation amount of the elastic member 8 gradually decreases and then gradually increases. The elastic force provided by the elastic member 8 gradually decreases and then gradually increases.

[0070] During the gradual decrease of the elastic force provided by the elastic member 8, the elastic force provides power for the movement of the upper auxiliary saw 3. During the gradual increase of the elastic force provided by the elastic member 8, the elastic force provides resistance for the movement of the upper auxiliary saw 3.

[0071] During the movement of the upper auxiliary saw assembly from the first position to the second position, the upper auxiliary saw 3 gradually decreases from the highest position to the lowest position, and the support rod 10 gradually increases from the lowest position to the highest position. When the support rod 10 is at the lowest position, the movement power provided by the elastic member 8 reaches the maximum. When the support rod 10 is at the highest position, the movement resistance provided by the elastic member 8 reaches the maximum.

[0072] That is, during the movement of the upper auxiliary saw assembly from the first position to the second position, the elastic member 8 first provides gradually decreasing movement power and then provides gradually increasing movement resistance. In this way, it is beneficial to initially drive the upper auxiliary saw 3 to move downward with maximum movement power and beneficial to later make the upper auxiliary saw 3 smoothly transit from movement to stillness with gradually increasing movement resistance.

[0073] Through this embodiment, it is beneficial to initially drive the upper auxiliary saw 3 to move downward with maximum movement power and beneficial to later make the upper auxiliary saw 3 smoothly transit from movement to stillness with gradually increasing movement resistance.

[0074] In an example embodiment, as shown in Figure 2 and Figure 3 When the upper auxiliary saw assembly further includes a support member and the support member includes the support plate 9 and the support rod 10, one end of the elastic member 8 is limited to the rack 7, and the other end of the elastic member 8 is limited to the support rod 10.

[0075] The elastic member 8 extends in a vertical direction. A bottom end of the elastic member 8 is limited by the frame 7, and a top end of the elastic member 8 is limited by the support rod 10.

[0076] In one example, the other end of the elastic member 8 is located at an end of the support rod 10 away from the support plate 9, so as to maximize the moment of force of the elastic member 8.

[0077] In an example embodiment, as shown in Figure 2 and Figure 3 The frame 7 includes a fixed table 11 opposite to the support rod 10. The fixed table 11 is provided with a limiting column 12. The elastic member 8 is a spring, and the spring is sleeved on the limiting column 12. One end of the spring is limited by the fixed table 11, and the other end of the spring is limited by the support rod 10.

[0078] In one example, the fixed table 11 and the support rod 10 can extend horizontally, the limiting column 12 extends vertically, and the spring is sleeved on the limiting column 12. The fixed table 11 and the support rod 10 actually become the limiting bodies for the downward and upward movements of the spring. The bottom end of the spring is limited by the fixed table 11, and the top end of the spring is limited by the support rod 10.

[0079] Through this embodiment, the working position of the spring is defined, and the spring is prevented from falling off.

[0080] In an example embodiment, as shown in Figure 2 and Figure 3 The upper auxiliary saw 3 and the lower auxiliary saw 4 are arranged opposite to each other in the up-down direction.

[0081] The upper auxiliary saw 3 and the lower auxiliary saw 4 are arranged opposite to each other in the up-down direction, which is conducive to the compact arrangement of the edge cutting mechanism, thereby saving limited space.

[0082] Meanwhile, the upper auxiliary saw 3 and the lower auxiliary saw 4 are arranged opposite to each other in the up-down direction. The upper auxiliary saw 3 can provide downward pressure to the board 1 when the lower auxiliary saw 4 is cutting; the lower auxiliary saw 4 can provide upward support force to the board 1 when the upper auxiliary saw 3 is cutting. The upper auxiliary saw 3 and the lower auxiliary saw 4 are arranged opposite to each other in the up-down direction, which is conducive to the stability of cutting.

[0083] Through this embodiment, the edge cutting mechanism is compactly arranged, thereby saving limited space; and the stability of cutting is also improved, because the upper auxiliary saw 3 can provide downward pressure to the board 1 when the lower auxiliary saw 4 is cutting; the lower auxiliary saw 4 can provide upward support force to the board 1 when the upper auxiliary saw 3 is cutting.

[0084] In an example embodiment, when the upper auxiliary saw assembly is in the second position, the distance between the bottom end of the upper auxiliary saw 3 and the top end of the lower auxiliary saw 4 is 2mm to 4mm.

[0085] In the second position, the distance between the bottom end of the upper auxiliary saw 3 and the top end of the lower auxiliary saw 4 is 2mm to 4mm. In one example, the thickness of the board 1 is 20mm. The lower auxiliary saw 4 enters the board 12mm to 4mm. The upper auxiliary saw 3 enters the board 112mm to 16mm, thereby completing the cutting of the upper and middle parts of the facing paper of the rear end face of the board 1 body.

[0086] Through this embodiment, the upper auxiliary saw 3 can complete the cutting of the upper and middle parts of the facing paper of the rear end face of the board 1 body.

[0087] In an example embodiment, when the upper auxiliary saw assembly is in the first position, the bottom end of the upper auxiliary saw 3 is lower than the upper surface of the board 1, and the distance between the bottom end of the upper auxiliary saw 3 and the upper surface of the board 1 is 2mm to 4mm.

[0088] Through this embodiment, when the upper auxiliary saw assembly is in the first position, the upper auxiliary saw 3 can cut the upper facing paper.

[0089] In one example, as shown in Figure 1 , the edge cutting mechanism further includes a motor 5, which provides power for the cutting of the upper auxiliary saw 3, the lower auxiliary saw 4 and the main saw 2.

[0090] In a second aspect, the example embodiments of the present application further provide a slitting device, which includes the above-described edge cutting mechanism.

[0091] As shown in Figure 1 , the slitting device further includes an intermediate saw 6, which is used to slit the board 1.

[0092] The slitting device of the example embodiments of the present application, through the arrangement of the upper auxiliary saw 3 and the lower auxiliary saw 4 upstream of the main saw 2, the board 1 body can provide support when the upper auxiliary saw 3 and the lower auxiliary saw 4 cut the upper and lower parts of the rear end face facing paper respectively, thereby achieving better cutting of the rear end face facing paper of the board 1, and the cross section is smoother, which is conducive to avoiding that the cross section still carries excess material after cutting.

[0093] In a third aspect, the example embodiments of the present application further provide a gypsum board production line, which includes the above-described slitting device.

[0094] The gypsum board production line of the example embodiments of the present application, through the arrangement of the upper auxiliary saw 3 and the lower auxiliary saw 4 upstream of the main saw 2, the board 1 body can provide support when the upper auxiliary saw 3 and the lower auxiliary saw 4 cut the upper and lower parts of the rear end face facing paper respectively, thereby achieving better cutting of the rear end face facing paper of the board 1, and the cross section is smoother, which is conducive to avoiding that the cross section still carries excess material after cutting.

[0095] In the description of the present application, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "perimeter", "mouth structure" and the like indicate the orientation or positional relationship based on 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 structure referred to has a particular orientation, is constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0096] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; the terms "installation", "connection", "fixed connection" can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of 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.

[0097] Although the embodiments disclosed by the present application are as above, the content described is only the embodiment adopted for the convenience of understanding the present application, and is not intended to limit the present application. Any person skilled in the art of the present application can make any modification and change in the form and details without departing from the spirit and scope of the present application disclosed, but the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. An edge cutting mechanism for trimming a board, the board including a board body and a cover paper wrapped around the board body, characterized by, The edge cutting mechanism comprises: a lower auxiliary saw assembly comprising a lower auxiliary saw located below a board for cutting lower edge paper of the board, the lower edge paper of the board comprising lower edge paper of a lower surface of the board and lower edge paper of front and rear ends of the board; an upper auxiliary saw assembly comprising an upper auxiliary saw located above the board for cutting upper edge paper of the board, the upper edge paper of the board comprising upper edge paper of an upper surface of the board and upper edge paper of front and rear ends of the board; and a main saw located downstream of the upper auxiliary saw and the lower auxiliary saw in a direction in which the board travels, the main saw being used to cut a main body of the board. The upper auxiliary saw assembly is mounted on a frame, and the upper auxiliary saw assembly is movably connected to the frame. The upper auxiliary saw assembly is arranged to move relative to the frame between a first position for cutting the upper edge paper of the board and a second position for disengaging the board. From the second position to the first position, the upper auxiliary saw is raised. From the second position to the first position, the upper auxiliary saw assembly is raised at least under the action of a force of the board. From the first position to the second position, the upper auxiliary saw assembly is lowered at least under the action of its own gravity.

2. The edge cutting mechanism according to claim 1, wherein: the upper auxiliary saw assembly further comprises a support member rotatably connected to the frame, the upper auxiliary saw being rotatably mounted on the support member, and an axis of rotation of the upper auxiliary saw is arranged to be offset from an axis of rotation of the support member, so that the upper auxiliary saw assembly swings relative to the frame between the first position and the second position. The support member comprises:

3. The edge cutting mechanism of claim 2, wherein a support plate on which the upper auxiliary saw is rotatably mounted, one end of the support plate being rotatably connected to the frame; and a support rod connected to the support plate and extending away from the upper auxiliary saw, the support rod being arranged to be subjected to a force to provide the upper auxiliary saw assembly with a movement force and / or a movement resistance. Further comprising:

4. The edge cutting mechanism according to any one of claims 1 to 3, characterized in that a resilient member cooperating with the frame and the upper auxiliary saw assembly to provide the upper auxiliary saw assembly with a movement resistance and / or a movement resistance.

5. The edge cutting mechanism according to claim 4, wherein: during movement of the upper auxiliary saw assembly from the second position to the first position, an amount of elastic deformation of the resilient member gradually decreases and then gradually increases.

6. The edge cutting mechanism according to claim 5, wherein: when the upper auxiliary saw assembly further comprises a support member and the support member comprises a support plate and a support rod, one end of the resilient member is limited to the frame, and the other end of the resilient member is limited to the support rod.

7. The edge cutting mechanism according to claim 6, wherein: the frame comprises a fixed table arranged opposite the support rod, the fixed table is provided with a limiting column, the resilient member is a spring, the spring is sleeved on the limiting column, one end of the spring is limited to the fixed table, and the other end of the spring is limited to the support rod.

8. The edge cutting mechanism according to any one of claims 1 to 3, wherein: ​ The upper auxiliary saw and the lower auxiliary saw are arranged opposite to each other in the up-down direction.

9. The edge cutting mechanism of claim 8, wherein, When the upper auxiliary saw assembly is in the second position, the distance between the bottom end of the upper auxiliary saw and the top end of the lower auxiliary saw is 2mm to 4mm.

10. The edge cutting mechanism of claim 8, wherein, When the upper auxiliary saw assembly is in the first position, the bottom end of the upper auxiliary saw is lower than the upper surface of the board, and the distance between the bottom end of the upper auxiliary saw and the upper surface of the board is 2mm to 4mm.

11. A slitting device, characterized in that A slitting device comprising the edge cutting mechanism according to any one of claims 1 to 10.

12. A gypsum board production line characterized in that, A slitting device comprising the edge cutting mechanism according to claim 11.

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