Deviation correcting device for coated oil-proof food paperboard

Abstract

The utility model discloses a coating oil-proof food paperboard deviation rectifying device which comprises a supporting assembly, a cross beam is fixedly installed at the top of the supporting assembly, an unwinding assembly, a deviation rectifying assembly, a tensioning assembly and a winding assembly are fixedly installed at the top of the cross beam, and a first roller and a second roller are fixedly installed at the bottom of the cross beam. According to the food paperboard rolling device, the food paperboard body can rapidly obtain tensile force through the tensioning assembly, deviation is not prone to occurring during rolling, the third roller is more stable during moving through the arrangement of the sliding block and the sliding rail, the first limiting plate and the second limiting plate play a role in limiting the food paperboard body, and the food paperboard rolling device is more convenient to use. And through cooperative use of the first limiting plates, the sliding grooves, the racks, the second limiting plates, the tooth blocks, the protruding blocks and the auxiliary rods, the distance between the two second limiting plates is adjusted, food paperboard bodies with different widths are limited, and the overall adaptability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of food cardboard production equipment, and specifically relates to a deviation rectifying device for coated oil-proof food cardboard. Background Art

[0002] Food cardboard is packaging paper dedicated to the food field, which is characterized by a relatively low grammage and is mainly used for food packaging. This kind of paper usually comes into direct or indirect contact with food and must meet food safety standards, and is not allowed to contain fluorescent whitening agents or other harmful components to the human body. Food cardboard has a wide range of uses, including but not limited to meal packaging such as instant noodle bowls, coffee cups, and takeout boxes. Compared with ordinary white cardboard, food cardboard pays more attention to safety and is often used to make packaging materials in direct contact with food to ensure food safety.

[0003] The patent with the publication number CN111874707B discloses a packaging deviation rectifying device for a food packaging machine. This packaging deviation rectifying device for a food packaging machine can, through the provided bottom mounting rod, bottom support spring, bottom positioning plate, top mounting rod, top support spring, top positioning plate, top deviation rectifying roller, and bottom deviation rectifying roller, rectify the deviation of the packaging bag while elastically supporting the packaging bag to prevent the packaging bag from being easily deformed due to excessive extrusion, thus causing damage to the packaging bag.

[0004] However, this device is not designed with a left-right adjustment mechanism and cannot limit food cardboard with different widths. It is not designed with a tensioning mechanism and cannot quickly pass the tensioning force, and it is prone to deviation during winding. Summary of the Invention

[0005] The purpose of the utility model is to provide a deviation rectifying device for coated oil-proof food cardboard to solve the technical problem that the existing equipment is not designed with an adjustment mechanism and is prone to deviation during winding.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A deviation rectifying device for coated oil-proof food cardboard includes a support assembly. A cross beam is fixedly installed at the top of the support assembly. A unwinding assembly, a deviation rectifying assembly, a tensioning assembly, and a winding assembly are fixedly installed at the top of the cross beam. A first roller and a second roller are fixedly installed at the bottom of the cross beam. A food cardboard body is arranged at the top of the cross beam.

[0007] As a preferred embodiment of the present utility model, the deviation rectifying assembly includes a mounting block, a guiding groove, a first through hole, a first mounting seat, a first guiding block, a second through hole, a limiting rod, a first rotating shaft, a first roller, a mounting plate, a screw rod, a second mounting seat, a second guiding block, a second rotating shaft, a second roller, a fixing block, a fixing rod, a first limiting plate, a sliding groove, a rack, a second limiting plate, a tooth block, a convex block and an auxiliary rod. A guiding groove and a first through hole are formed on the outer side of the mounting block. There are two sets of identical mounting blocks, and each set has two identical ones. A first mounting seat is arranged between the two mounting blocks. A first guiding block is fixedly mounted on the outer side of the first mounting seat. A second through hole is formed on the outer side of the first guiding block. A limiting rod is arranged on the outer side of the mounting block. A first rotating shaft is rotatably mounted inside the first mounting seat. A first roller is fixedly mounted on the outer side of the first rotating shaft. A mounting plate is fixedly mounted on the top of the mounting block. A screw rod is threadedly connected to the top of the mounting plate. A second mounting seat is fixedly mounted at the bottom of the screw rod. A second guiding block is fixedly mounted on the outer side of the second mounting seat. A second rotating shaft is rotatably mounted inside the second mounting seat. A second roller is fixedly mounted on the outer side of the second rotating shaft. A fixing block is fixedly mounted on the outer side of the mounting block. A fixing rod is fixedly mounted on the outer side of the fixing block. A first limiting plate is fixedly mounted on the outer side of the fixing rod. A sliding groove is formed on the outer side of the first limiting plate. A rack is arranged on the outer side of the first limiting plate. A second limiting plate is arranged on the top of the first limiting plate. A tooth block and a convex block are fixedly mounted on the bottom of the second limiting plate. An auxiliary rod is fixedly mounted on the top of the second limiting plate.

[0008] Pass the food cardboard body through between the first roller and the second roller, and the deviation rectification of the food cardboard body can be realized. Through the design of the first roller and the second roller, the first roller and the second roller play a limiting role on the food cardboard body, and it is not easy to deviate during winding.

[0009] As a preferred embodiment of the present utility model, the first mounting seat and the mounting block are installed by plugging. The first through hole and the second through hole communicate with each other, and the limiting rod passes through the first through hole and the second through hole.

[0010] Insert the first guiding block into the inside of the guiding groove, and then pass the limiting rod through the first through hole and the second through hole, and the rapid installation of the mounting block can be realized. Through the first guiding block and the guiding groove, the structure is simple, convenient for installation and disassembly, convenient for subsequent maintenance and repair, and improves the installation efficiency.

[0011] As a preferred embodiment of the present utility model, the second mounting seat and the mounting block are installed by plugging. The central lines of the screw rod and the second mounting seat are located on the same vertical line, and the first roller and the second roller are of the same size.

[0012] Insert the second guiding block into the inside of the guiding groove, and the rapid positioning of the second mounting seat can be realized. Through the design of the screw rod, the distance between the first roller and the second roller can be adjusted, and the food cardboard body with different thicknesses can be limited, improving the overall adaptability.

[0013] As a preferred embodiment of the present utility model, the tensioning assembly includes a support plate, a cylinder, a connecting plate, a third rotating shaft, a third roller, a slider, a baffle, and a slide rail. A cylinder is fixedly installed on the top of the support plate, and a connecting plate is fixedly installed at the movable end of the cylinder. A third rotating shaft is rotatably installed inside the connecting plate, and a third roller is fixedly installed on the outer side of the third rotating shaft. A slider is fixedly installed on the outer side of the connecting plate, a baffle is fixedly installed on the outer side of the cross beam, and a slide rail is fixedly installed on the side of the baffle close to the slider.

[0014] Start the cylinder. The movable end of the cylinder cooperates with the connecting plate and the third rotating shaft to raise the third roller. Through the design of the tensioning assembly, the food cardboard body can quickly obtain a tensioning force and is not prone to deviation during winding.

[0015] As a preferred embodiment of the present utility model, there are two identical sliders and slide rails. The two sliders and the slide rails are symmetrically distributed about the center line of the connecting plate, and the slider is slidably connected to the slide rail.

[0016] The slider and the slide rail make the movement of the third roller more stable. Through the design of the two sliders and the slide rail, the stability is further improved.

[0017] As a preferred embodiment of the present utility model, the winding assembly includes a motor, a first pulley, a third mounting seat, a fourth rotating shaft, a second pulley, a transmission belt, a fourth roller, and a groove. The output end of the motor is fixedly installed with a first pulley. A third mounting seat is fixedly installed on the top of the cross beam. A fourth rotating shaft is rotatably installed inside the third mounting seat. A second pulley is fixedly installed on the outer side of the fourth rotating shaft. A transmission belt is arranged between the second pulley and the first pulley. A fourth roller is fixedly installed on the outer side of the fourth rotating shaft, and a groove is formed on the outer side of the fourth roller.

[0018] Start the motor. The output shaft of the motor cooperates with the first pulley, the second pulley, and the transmission belt to make the fourth rotating shaft rotate. The rotation of the fourth rotating shaft drives the fourth roller to rotate, and the winding of the food cardboard body can be realized. Through the design of the winding assembly, the food cardboard body can be quickly wound.

[0019] As a preferred embodiment of the present utility model, the first limiting plate and the second limiting plate are slidably connected. There are two identical second limiting plates, and the two second limiting plates are symmetrically distributed about the center line of the first limiting plate.

[0020] The first limiting plate and the second limiting plate play a role in limiting the food cardboard body. Through the coordinated use of the first limiting plate, the chute, the rack, the second limiting plate, the tooth block, the convex block, and the auxiliary rod, the distance between the two second limiting plates can be adjusted, and food cardboard bodies of different widths can be limited, improving the overall adaptability.

[0021] Compared with the prior art, the deviation rectifying device for coated oil-proof food cardboard of the present utility model has the following beneficial effects:

[0022] 1. The utility model limits the food cardboard body through the first roller and the second roller, and it is not easy to shift during winding. The installation and disassembly are facilitated by the first guide block and the guide groove, which is convenient for subsequent maintenance and repair, improves the installation efficiency. The distance between the first roller and the second roller can be adjusted by the screw rod, and food cardboard bodies with different thicknesses can be limited, improving the overall adaptability.

[0023] 2. In the utility model, the tensioning component enables the food cardboard body to quickly obtain a tensioning force and is not easy to shift during winding. Through the design of the slider and the slide rail, the third roller moves more stably. Through the design of two sliders and slide rails, the stability is further improved. The winding component can quickly wind the food cardboard body. Through the design of the first limiting plate and the second limiting plate, the food cardboard body is limited. Through the cooperation of the first limiting plate, the chute, the rack, the second limiting plate, the tooth block, the convex block and the auxiliary rod, the distance between the two second limiting plates can be adjusted, and food cardboard bodies with different widths can be limited, improving the overall adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only the embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of an embodiment of the utility model;

[0026] Figure 2 It is a schematic installation structure diagram of the deviation rectifying component in an embodiment of the utility model Figure 1 ;

[0027] Figure 3 It is a schematic installation structure diagram of the deviation rectifying component in an embodiment of the utility model Figure 2 ;

[0028] Figure 4 It is a schematic installation structure diagram of the tensioning component in an embodiment of the utility model;

[0029] Figure 5 It is a schematic installation structure diagram of the winding component in an embodiment of the utility model.

[0030] Reference numerals: 1, support assembly; 2, cross beam; 3, unwinding assembly; 4, deviation rectifying assembly; 401, mounting block; 402, guiding groove; 403, through hole 1; 404, mounting seat 1; 405, guiding block 1; 406, through hole 2; 407, limiting rod; 408, rotating shaft 1; 409, roller 1; 410, mounting plate; 411, screw rod; 412, mounting seat 2; 413, guiding block 2; 414, rotating shaft 2; 415, roller 2; 416, fixing block; 417, fixing rod; 418, limiting plate 1; 419, sliding groove; 420, rack; 421, limiting plate 2; 422, tooth block; 423, convex block; 424, auxiliary rod; 5, first roller; 6, tensioning assembly; 601, support plate; 602, cylinder; 603, connecting plate; 604, rotating shaft 3; 605, roller 3; 606, slider; 607, baffle; 608, sliding rail; 7, second roller; 8, winding assembly; 801, motor; 802, pulley 1; 803, mounting seat 3; 804, rotating shaft 4; 805, pulley 2; 806, transmission belt; 807, roller 4; 808, groove; 9, food cardstock body. Detailed implementation manners

[0031] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention more clear and understandable, the following further elaborates on the embodiments of the present invention in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the embodiments of the present invention.

[0033] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the communication inside two elements; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0034] See Figures 1-5As shown in the figure, an offset correction device for a coated oil-proof food cardboard of an embodiment of the present utility model includes a support assembly 1. A cross beam 2 is fixedly installed on the top of the support assembly 1. A unwinding assembly 3, an offset correction assembly 4, a tensioning assembly 6 and a winding assembly 8 are fixedly installed on the top of the cross beam 2. A first roller 5 and a second roller 7 are fixedly installed on the bottom of the cross beam 2. A food cardboard body 9 is arranged on the top of the cross beam 2.

[0035] See Figure 2 , 3 As shown in the figure, the offset correction assembly 4 includes a mounting block 401, a guide groove 402, a through hole 403, a mounting seat 404, a guide block 405, a through hole 406, a limiting rod 407, a rotating shaft 408, a roller 409, a mounting plate 410, a screw 411, a mounting seat 412, a guide block 413, a rotating shaft 414, a roller 415, a fixing block 416, a fixing rod 417, a limiting plate 418, a sliding groove 419, a rack 420, a limiting plate 421, a tooth block 422, a convex block 423 and an auxiliary rod 424. A guide groove 402 and a through hole 403 are formed on the outer side of the mounting block 401. There are two sets of the same mounting blocks 401, and there are two identical ones in each set. A mounting seat 404 is arranged between the two mounting blocks 401. A guide block 405 is fixedly installed on the outer side of the mounting seat 404. A through hole 406 is formed on the outer side of the guide block 405. A limiting rod 407 is arranged on the outer side of the mounting block 401. A rotating shaft 408 is rotatably installed inside the mounting seat 404. A roller 409 is fixedly installed on the outer side of the rotating shaft 408. A mounting plate 410 is fixedly installed on the top of the mounting block 401. A screw 411 is threadedly connected to the top of the mounting plate 410. A mounting seat 412 is fixedly installed at the bottom of the screw 411. A guide block 413 is fixedly installed on the outer side of the mounting seat 412. A rotating shaft 414 is rotatably installed inside the mounting seat 412. A roller 415 is fixedly installed on the outer side of the rotating shaft 414. A fixing block 416 is fixedly installed on the outer side of the mounting block 401. A fixing rod 417 is fixedly installed on the outer side of the fixing block 416. A limiting plate 418 is fixedly installed on the outer side of the fixing rod 417. A sliding groove 419 is formed on the outer side of the limiting plate 418. A rack 420 is arranged on the outer side of the limiting plate 418. A limiting plate 421 is arranged on the top of the limiting plate 418. A tooth block 422 and a convex block 423 are fixedly installed at the bottom of the limiting plate 421. An auxiliary rod 424 is fixedly installed on the top of the limiting plate 421. The food cardboard body 9 passes through between the roller 409 and the roller 415, so as to realize the offset correction of the food cardboard body 9. The roller 409 and the roller 415 play a limiting role on the food cardboard body 9, and it is not easy to shift during winding.

[0036] The mounting base one 404 and the mounting block 401 are installed by plugging. The through hole one 403 communicates with the through hole two 406, and the limiting rod 407 passes through the through hole one 403 and the through hole two 406. Insert the guiding block one 405 into the inside of the guiding groove 402, and then pass the limiting rod 407 through the through hole one 403 and the through hole two 406, which can realize the quick installation of the mounting block 401. The guiding block one 405 and the guiding groove 402 facilitate installation and disassembly, which is convenient for subsequent maintenance and repair and improves the installation efficiency.

[0037] The mounting base two 412 and the mounting block 401 are installed by plugging. The center line of the screw rod 411 and the mounting base two 412 is on the same vertical line, and the roller one 409 and the roller two 415 are of the same size. Insert the guiding block two 413 into the inside of the guiding groove 402, which can realize the quick positioning of the mounting base two 412. Through the design of the screw rod 411, the distance between the roller one 409 and the roller two 415 can be adjusted, and the food cardboard body 9 with different thicknesses can be limited, improving the overall adaptability.

[0038] See Figure 4 As shown, the tensioning assembly 6 includes a support plate 601, a cylinder 602, a connecting plate 603, a rotating shaft three 604, a roller three 605, a slider 606, a baffle 607 and a slide rail 608. The cylinder 602 is fixedly installed at the top of the support plate 601. The movable end of the cylinder 602 is fixedly installed with the connecting plate 603. The rotating shaft three 604 is rotatably installed inside the connecting plate 603. The roller three 605 is fixedly installed on the outside of the rotating shaft three 604. The slider 606 is fixedly installed on the outside of the connecting plate 603. The baffle 607 is fixedly installed on the outside of the cross beam 2. The slide rail 608 is fixedly installed on the side of the baffle 607 close to the slider 606.

[0039] Start the cylinder 602. The movable end of the cylinder 602 cooperates with the connecting plate 603 and the rotating shaft three 604 to raise the roller three 605. Through the design of the tensioning assembly 6, the food cardboard body 9 can quickly obtain a tensioning force and is not prone to deviation during winding.

[0040] Both the slider 606 and the slide rail 608 are provided with two identical ones. The two sliders 606 and the slide rails 608 are symmetrically distributed about the center line of the connecting plate 603. The slider 606 and the slide rail 608 are slidably connected. The slider 606 and the slide rail 608 make the movement of the roller three 605 more stable, and the stability is further improved through the setting of the two sliders 606 and the slide rails 608.

[0041] See Figure 5As shown in the figure, the winding assembly 8 includes a motor 801, a first pulley 802, a third mounting base 803, a fourth rotating shaft 804, a second pulley 805, a transmission belt 806, a fourth roller 807 and a groove 808. The output end of the motor 801 is fixedly installed with the first pulley 802. The top of the cross beam 2 is fixedly installed with the third mounting base 803. The fourth rotating shaft 804 is rotatably installed inside the third mounting base 803. The second pulley 805 is fixedly installed on the outer side of the fourth rotating shaft 804. A transmission belt 806 is arranged between the second pulley 805 and the first pulley 802. The fourth roller 807 is fixedly installed on the outer side of the fourth rotating shaft 804. The groove 808 is opened on the outer side of the fourth roller 807. When the motor 801 is started, the output shaft of the motor 801 cooperates with the first pulley 802, the second pulley 805 and the transmission belt 806 to make the fourth rotating shaft 804 rotate. The rotation of the fourth rotating shaft 804 drives the fourth roller 807 to rotate, so as to realize the winding of the food cardboard body 9. Through the design of the winding assembly 8, the rapid winding of the food cardboard body 9 can be realized.

[0042] The first limiting plate 418 and the second limiting plate 421 are in sliding connection. There are two identical second limiting plates 421, and the two second limiting plates 421 are symmetrically distributed about the center line of the first limiting plate 418. The first limiting plate 418 and the second limiting plate 421 play a limiting role on the food cardboard body 9. Through the cooperation of the first limiting plate 418, the sliding groove 419, the rack 420, the second limiting plate 421, the tooth block 422, the convex block 423 and the auxiliary rod 424, the distance between the two second limiting plates 421 can be adjusted, and the food cardboard body 9 with different widths can be limited, so as to improve the overall adaptability.

[0043] The above shows and describes the basic principle of the invention. The above is only the preferred embodiment of the invention, and it is not used to limit the invention. The descriptions in the above embodiments and the specification only illustrate the principle of the invention. Without departing from the scope of the invention, any modification, equivalent replacement and improvement made within the spirit and scope of the invention shall be included in the protection scope of the invention.

Claims

1. A deviation rectifying device for coated oil-proof food cardboard, comprising a support assembly (1), characterized in that: The top of the support assembly (1) is fixedly installed with a cross beam (2). The top of the cross beam (2) is fixedly installed with an unwinding assembly (3), a deviation rectifying assembly (4), a tensioning assembly (6) and a winding assembly (8). The bottom of the cross beam (2) is fixedly installed with a first roller (5) and a second roller (7). A food cardboard body (9) is arranged on the top of the cross beam (2).

2. The deviation rectifying device for a coated oil-proof food cardboard according to claim 1, characterized in that: The deviation rectifying assembly (4) includes a mounting block (401), a guiding groove (402), a first through hole (403), a first mounting seat (404), a first guiding block (405), a second through hole (406), a limiting rod (407), a first rotating shaft (408), a first roller (409), a mounting plate (410), a screw rod (411), a second mounting seat (412), a second guiding block (413), a second rotating shaft (414), a second roller (415), a fixing block (416), a fixing rod (417), a first limiting plate (418), a sliding groove (419), a rack (420), a second limiting plate (421), a tooth block (422), a convex block (423) and an auxiliary rod (424). A guiding groove (402) and a first through hole (403) are arranged on the outer side of the mounting block (401). There are two sets of the same mounting blocks (401), and each set has two identical ones. A first mounting seat (404) is arranged between the two mounting blocks (401). A first guiding block (405) is fixedly installed on the outer side of the first mounting seat (404). A second through hole (406) is arranged on the outer side of the first guiding block (405). A limiting rod (407) is arranged on the outer side of the mounting block (401). A first rotating shaft (408) is rotatably installed inside the first mounting seat (404). A first roller (409) is fixedly installed on the outer side of the first rotating shaft (408). A mounting plate (410) is fixedly installed on the top of the mounting block (401). A screw rod (411) is threadedly connected to the top of the mounting plate (410). A second mounting seat (412) is fixedly installed at the bottom of the screw rod (411). A second guiding block (413) is fixedly installed on the outer side of the second mounting seat (412). A second rotating shaft (414) is rotatably installed inside the second mounting seat (412). A second roller (415) is fixedly installed on the outer side of the second rotating shaft (414). A fixing block (416) is fixedly installed on the outer side of the mounting block (401). A fixing rod (417) is fixedly installed on the outer side of the fixing block (416). A first limiting plate (418) is fixedly installed on the outer side of the fixing rod (417). A sliding groove (419) is arranged on the outer side of the first limiting plate (418). A rack (420) is arranged on the outer side of the first limiting plate (418). A second limiting plate (421) is arranged on the top of the first limiting plate (418). A tooth block (422) and a convex block (423) are fixedly installed at the bottom of the second limiting plate (421). An auxiliary rod (424) is fixedly installed on the top of the second limiting plate (421).

3. The deviation rectifying device for the coated oil-proof food card paper according to claim 1, characterized in that: The mounting base one (404) and the mounting block (401) are installed by plugging. The through hole one (403) communicates with the through hole two (406), and the limiting rod (407) passes through the through hole one (403) and the through hole two (406).

4. A deviation rectifying device for coated oil-proof food cardboard according to claim 1, characterized in that: The mounting base two (412) and the mounting block (401) are installed by plugging. The center line of the screw rod (411) and the mounting base two (412) is on the same vertical line, and the roller one (409) and the roller two (415) are of the same size.

5. The deviation rectifying device for coated oil-proof food cardboard according to claim 1, characterized in that: The tensioning assembly (6) includes a support plate (601), a cylinder (602), a connecting plate (603), a rotating shaft three (604), a roller three (605), a slider (606), a baffle (607) and a slide rail (608). The cylinder (602) is fixedly installed at the top of the support plate (601). The movable end of the cylinder (602) is fixedly installed with the connecting plate (603). The rotating shaft three (604) is rotatably installed inside the connecting plate (603). The roller three (605) is fixedly installed on the outer side of the rotating shaft three (604). The slider (606) is fixedly installed on the outer side of the connecting plate (603). The baffle (607) is fixedly installed on the outer side of the cross beam (2). The slide rail (608) is fixedly installed on the side of the baffle (607) close to the slider (606).

6. The deviation rectifying device for coated oil-proof food card paper according to claim 1, wherein: There are two identical sliders (606) and slide rails (608). The two sliders (606) and slide rails (608) are symmetrically distributed about the center line of the connecting plate (603). The slider (606) is slidably connected to the slide rail (608).

7. A deviation rectifying device for coated oil-proof food cardboard according to claim 1, characterized in that: The winding assembly (8) includes a motor (801), a pulley one (802), a mounting base three (803), a rotating shaft four (804), a pulley two (805), a transmission belt (806), a roller four (807) and a groove (808). The output end of the motor (801) is fixedly installed with the pulley one (802). The mounting base three (803) is fixedly installed at the top of the cross beam (2). The rotating shaft four (804) is rotatably installed inside the mounting base three (803). The pulley two (805) is fixedly installed on the outer side of the rotating shaft four (804). The transmission belt (806) is arranged between the pulley two (805) and the pulley one (802). The roller four (807) is fixedly installed on the outer side of the rotating shaft four (804). The groove (808) is opened on the outer side of the roller four (807).

8. The deviation rectifying device for a coated oil-proof food cardboard according to claim 1, characterized in that: The limiting plate one (418) is slidably connected to the limiting plate two (421). There are two identical limiting plates two (421). The two limiting plates two (421) are symmetrically distributed about the center line of the limiting plate one (418).

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