A packaging sheet pulling device

Abstract

The application discloses a packaging sheet traction device, a rack and a traction assembly, the traction assembly comprising a driving roller, a driven roller and a main driving mechanism, the driving roller being rotatably installed on the rack, the main driving mechanism being installed on the rack and connected with the driving roller to drive the driving roller to rotate, thereby pulling the sheet to move forward, the sheet passing through between the driving roller and the driven roller and abutting against the two, the driven roller comprising a plurality of side-by-side arranged segmented rollers, the rack being provided with a plurality of adjusting assemblies corresponding to the segmented rollers, the adjusting assembly comprising a shell, a moving plate and a main spring, the shell being connected with the rack, the moving plate being slidably arranged in the corresponding shell in the vertical direction, the segmented roller being rotatably installed on the corresponding moving plate, a push plate being arranged on the shell, one end of the main spring being connected with the push plate on the corresponding shell, the other end of the main spring being connected with the moving plate, through the arrangement of the multiple segmented rollers, the local thickness change of the sheet is adaptively shrunk.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sheet material traction, in particular to a packaging sheet material traction device. BACKGROUND

[0002] At present, in the field of modern packaging material production and conveying, sheet material extrusion and molding process is the core link, and its quality directly affects the performance and market competitiveness of packaging products. The traditional traction device has significant technical defects when dealing with local thickness changes of sheet material, and is prone to uneven pressure, causing sheet material to slip, stretch or break.

[0003] The patent with the publication number CN215885751U discloses a traction device for sheet material irradiation modification equipment. The patent uses a traditional whole driven roller, which still cannot respond to local thickness changes of sheet material. In actual production, due to the influence of raw materials, process or upstream processes, the thickness of sheet material is not uniform. The whole driven roller cannot respond to such local thickness changes, which will cause uneven pressure on each point of the sheet material. The area with larger thickness receives excessive pressure, causing the sheet material to be excessively stretched, deformed or produce "bright print". The area with smaller thickness will slip due to insufficient pressure. Such uneven traction will not only affect the stability of sheet material tension, but also cause sheet material to deviate, wrinkle or even break, resulting in production interruption and increased scrap rate. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the defects of the prior art and provide a packaging sheet material traction device that can respond to local thickness changes of sheet material through the setting of multiple segmented rollers.

[0005] To solve the above technical problems, the technical solution of the present application is as follows: a packaging sheet material traction device, comprising:

[0006] a rack;

[0007] a traction assembly, the traction assembly comprising a driving roller, a driven roller and a main drive mechanism, the driving roller being rotatably mounted on the rack, the main drive mechanism being mounted on the rack and connected to the driving roller to drive the driving roller to rotate, thereby pulling the sheet material forward, the sheet material passing between the driving roller and the driven roller and abutting against both;

[0008] wherein the driven roller comprises a plurality of segmented rollers arranged side by side;

[0009] The rack is provided with a plurality of adjusting assemblies corresponding to the segmented rollers, each adjusting assembly comprising a housing, a moving plate and a main spring, the housing being connected to the rack, the moving plate being slidably arranged in the housing in a vertical direction, the segmented roller being rotatably mounted on the moving plate, a push plate being arranged on the housing, one end of the main spring being connected to the push plate on the housing, and the other end of the main spring being connected to the moving plate.

[0010] The main spring enables the corresponding segmented roller to always abut against the sheet and to adaptively contract in the vertical direction according to the thickness of the sheet at the abutting position.

[0011] Further, the adjusting assembly further comprises a linear drive mechanism.

[0012] The linear drive mechanism is connected to the corresponding housing, the push plate is connected to the linear drive mechanism, and the linear drive mechanism is adapted to drive the push plate to move in the vertical direction, thereby pressurizing or depressurizing the main spring.

[0013] When the segmented roller is pushed upward by the sheet, the linear drive mechanism drives the push plate to move upward, thereby depressurizing the main spring.

[0014] When the segmented roller is pushed downward by the sheet and remains in abutment with the sheet, the linear drive mechanism drives the push plate to move downward, thereby pressurizing the main spring.

[0015] Further, the rack comprises a support portion and a movable portion, the movable portion being slidably arranged on the support portion, the adjusting assembly being arranged on the movable portion, a first lifting mechanism being arranged on the support portion and connected to the movable portion to drive the movable portion to move in the vertical direction, thereby driving all the adjusting assemblies and the segmented rollers corresponding to the adjusting assemblies to move.

[0016] Further, the traction assembly is provided with a wrinkle removing assembly in front of the traction assembly in the conveying direction, the wrinkle removing assembly being adapted to first contact the sheet, thereby removing wrinkles of the sheet, and then the sheet contacts the traction assembly.

[0017] At least one support roller is arranged below the wrinkle removing assembly, the support roller being rotatably mounted on the rack, and the support roller being adapted to support the sheet, so that the sheet is located between the support roller and the wrinkle removing assembly.

[0018] The wrinkle removing assembly comprises two wrinkle removing components arranged side by side and mounting tables corresponding to the wrinkle removing components, the wrinkle removing components being arranged in the mounting tables, and the mounting tables being arranged on the rack.

[0019] The wrinkle removing component comprises a circulating motion mechanism and a plurality of unfolding mechanisms, the plurality of unfolding mechanisms are arranged at intervals on the corresponding circulating motion mechanism, the circulating motion mechanism is suitable for driving the unfolding mechanism to make one-way circulation motion and contact with the sheet material, and the unfolding mechanism is suitable for pushing the sheet material at the wrinkle position.

[0020] The two circulating motion mechanisms are opposite in motion direction.

[0021] Further, the unfolding mechanism comprises a mounting plate, a plurality of mounting grooves are arranged at intervals on the mounting plate in a circumferential direction, and flexible brushes are arranged in the mounting grooves.

[0022] The mounting plate is provided with a support, and the support is connected with the corresponding circulating motion mechanism.

[0023] Further, the mounting plate is rotatably arranged on the corresponding support, a driving gear is connected to the mounting plate, a first gear rack is connected to the mounting table, and the first gear rack is located on the side close to the supporting roller; when the circulating motion mechanism drives the flexible brush to move below the mounting table, the driving gear is engaged with the first gear rack, so as to drive the mounting plate to rotate as a whole.

[0024] Further, the rack is provided with two second lifting mechanisms corresponding to the mounting tables, the second lifting mechanisms are connected with the corresponding mounting tables, the mounting tables are slidably arranged on the rack in the vertical direction, and the two second lifting mechanisms are used for controlling the corresponding mounting tables to move in the vertical direction.

[0025] Further, at least one carding and cleaning assembly is arranged on the mounting table, the carding and cleaning assembly comprises a carding roller, the carding roller is rotatably arranged on the corresponding mounting table, a plurality of fins are arranged at intervals in a circumferential direction on the carding roller, and the carding roller is suitable for being driven to rotate, so as to drive the fins to rotate in contact with the flexible brushes.

[0026] The mounting table is provided with a second gear rack on the side close to the carding and cleaning assembly, when the circulating motion mechanism drives the flexible brush to move above the mounting table, the driving gear is engaged with the second gear rack, and the rotating direction of the flexible brush is opposite to the rotating direction of the carding roller.

[0027] Further, the combing and cleaning assembly further comprises a third motor and a receiving plate, the combing roller is hollow, the receiving plate is fixedly arranged on the mounting table and located in the combing roller, the receiving plate is provided with a receiving groove with an opening facing upward, the bottom of the receiving plate is in abutment with the inner wall of the lower half of the combing roller, a through groove is arranged between two adjacent fins, the through groove comprises an inlet and an outlet, the inlet is connected with the outside of the combing roller, and the outlet is connected with the inner cavity of the combing roller, and a scraper connected with the combing roller is arranged at the inlet, and the scraper is suitable for scraping off impurities on the flexible brush and guiding the impurities into the through groove when the flexible brush is in contact with the scraper.

[0028] Further, the through groove is provided with a retention groove, the impurities entering the through groove first exist in the retention groove, and when the combing roller rotates to a position where the through groove is located above the receiving groove, the impurities in the retention groove fall into the receiving groove.

[0029] By adopting the technical scheme, the present application has the following beneficial effects:

[0030] 1. The main spring on the segmented roller is pre-pressed, when the sheet passes between the segmented roller and the driving roller, the segmented roller abuts against the sheet, cooperates with the driving roller to realize traction, when the local thickness of the sheet changes, the corresponding segmented roller in the vertical direction generates displacement, the main spring makes the segmented roller always abut against the sheet, and adjusts the pressure through the linear driving mechanism, when the thickness of the sheet changes, the pressure is automatically increased or decreased, the optimal clamping force is maintained, and the risk of sheet deformation is reduced.

[0031] 2. The wrinkle is removed by the one-way circular motion of the flexible brush driven by the circular motion mechanism when the sheet does not enter between the driving roller and the segmented roller, the flexible brush is in a state of continuous movement and contacts the sheet, and the wrinkles are unfolded by the driving brush, the treatment effect of complex wrinkles is better than that of the traditional unfolding roller, the material is not damaged due to excessive stretching, the requirement for tension is low, and the wrinkle can be removed even if the sheet is in a relatively relaxed state. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a schematic diagram of the overall structure of the present application Figure 1 ;

[0033] Figure 2 is a schematic diagram of the adjusting assembly structure of the present application

[0034] Figure 3 is a schematic diagram of the installation position of the thickness measuring sensor in the present application

[0035] Figure 4 is a schematic diagram of the overall structure of the present application Figure 2 ;

[0036] Figure 5 Structure schematic diagram of the circulating movement mechanism of the present application;

[0037] Figure 6 Structure schematic diagram of the present application Figure 5 Enlarged view at A in the middle;

[0038] Figure 7 Structure schematic diagram of another installation slot form in the present application;

[0039] Figure 8 Structure schematic diagram of the carding roller of the present application;

[0040] Figure 9 Structure schematic diagram of the carding roller of the present application;

[0041] Figure 10 Structure schematic diagram of the present application Figure 9 Enlarged view at B in the middle;

[0042] In the figure: 1, frame; 11, support part; 12, movable part; 13, first lifting mechanism;

[0043] 2, traction assembly; 21, driving roller; 22, segmented roller; 23, main driving mechanism;

[0044] 3, adjusting assembly; 31, outer shell; 32, moving plate; 33, main spring; 34, linear driving mechanism; 35, push plate; 36, thickness measuring sensor;

[0045] 4, wrinkle removing assembly; 41, support roller; 42, wrinkle removing part; 43, installation table; 44, circulating movement mechanism; 45, unfolding mechanism; 46, installation plate; 47, installation slot; 48, support; 49, second motor; 410, sliding rail; 411, chain; 412, sprocket; 413, guide wheel; 414, driving gear; 415, first rack;

[0046] 5, carding and cleaning assembly; 51, carding roller; 52, fin; 53, second rack; 54, third motor; 55, storage plate; 56, through slot; 57, scraper; 58, retention slot;

[0047] 61, second lifting mechanism. DETAILED DESCRIPTION

[0048] In order to make the content of the present application easier to be clearly understood, the present application is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings.

[0049] Embodiment one: as shown in the figure, a packaging sheet traction device, comprising: Figures 1-2 frame 1;

[0050]

[0051] ​A traction assembly 2 is arranged on the rack 1, the traction assembly 2 comprises a driving roller 21, a driven roller and a main driving mechanism 23, the driving roller 21 is rotatably arranged on the rack 1, the main driving mechanism is arranged on the rack 1 and connected with the driving roller 21 to drive the driving roller 21 to rotate, thereby pulling the sheet to move forward, the sheet passes through and abuts against the driving roller 21 and the driven roller;

[0052] The driven roller comprises a plurality of segment rollers 22 arranged side by side;

[0053] A plurality of adjusting assemblies 3 corresponding to the segment rollers 22 are arranged on the rack 1, the adjusting assembly 3 comprises a shell 31, a moving plate 32 and a main spring 33, the shell 31 is connected with the rack 1, the moving plate 32 is slidingly arranged in the corresponding shell 31 in the vertical direction, the segment roller 22 is rotatably arranged on the corresponding moving plate 32, a push plate 35 is arranged on the shell 31, one end of the main spring 33 is connected with the push plate 35 on the corresponding shell 31, and the other end of the main spring 33 is connected with the moving plate 32;

[0054] The main spring 33 makes the corresponding segment roller 22 always abut against the sheet and adaptively contract in the vertical direction with the change of the thickness of the sheet at the abutting position.

[0055] Upstream devices and downstream devices corresponding to the front and rear of the traction assembly 2 in the conveying direction are arranged, which comprise tension control components and the like, and finally the sheet is conveyed to a designated position by the traction device for subsequent processing, which is a part of the prior art and is not shown in the figure and will not be described in detail here;

[0056] The main driving mechanism comprises a first motor, the first motor is arranged on the rack 1, and an output end of the first motor is connected with the driving roller 21 to drive the driving roller 21 to rotate.

[0057] The driving roller 21 is a steel roller, and the segment roller 22 is a rubber roller, in the process of traction, the sheet abuts against the driving roller 21, the driving roller 21 is driven to rotate by the first motor as a driving source, thereby completing the traction work, and the segment roller 22 is pressed on the sheet by the main spring 33, when the sheet is driven to move forward by the driving roller 21, the segment roller 22 is driven to rotate by the friction force, thereby cooperating with the driving roller 21 to complete the effect of driving traction on the sheet;

[0058] When the sheet has a local uneven thickness, the segment roller 22 adaptively adjusts according to the thickness of the corresponding sheet, the adjusting mode is to contract in the vertical direction by the main spring 33, and the main spring 33 drives the moving plate 32 to slide in the shell 31 in the process of contraction;

[0059] It should be noted that the main spring 33 needs to be pre-compressed, that is, by adjusting the positions of all the segmented rollers 22, a certain pressure is first applied to the sheet material by all the segmented rollers 22, and then the sheet material is normally pulled, and the segmented rollers 22 are adjusted in position according to the subsequent thickness change of the sheet material by the main spring 33. When the thickness becomes smaller, the main spring 33 that has been compressed is loosened, so that the segmented rollers 22 move downward and abut against the sheet material at the place where the thickness becomes smaller. When the thickness becomes larger, the main spring 33 that has been compressed is further compressed, so that the segmented rollers 22 move upward and abut against the sheet material at the place where the thickness becomes larger. The contraction of the main spring 33 realizes the self-adaptive adjustment of the positions of the segmented rollers 22 according to the thickness change of the sheet material, so that the segmented rollers 22 always abut against the sheet material to avoid slipping during pulling. The arrangement of multiple segmented rollers 22 can make them always abut against the sheet material to well convey the sheet material through the self-adaptive position adjustment.

[0060] As shown in Figure 2 , the adjusting assembly 3 further comprises a linear drive mechanism 34;

[0061] The linear drive mechanism 34 is connected with the corresponding housing 31, and the push plate 35 is connected with the corresponding linear drive mechanism 34. The linear drive mechanism 34 is adapted to drive the push plate 35 to move vertically, thereby pressurizing or depressurizing the main spring 33.

[0062] When the segmented roller 22 is pushed upward by the sheet material, the linear drive mechanism 34 drives the push plate 35 to move upward, thereby depressurizing the main spring 33.

[0063] When the segmented roller 22 is pushed downward by the sheet material and keeps abutting against the sheet material, the linear drive mechanism 34 drives the push plate 35 to move downward, thereby pressurizing the main spring 33.

[0064] The linear drive mechanism 34 comprises a first electric cylinder mounted on the housing 31, and the movable end of the first electric cylinder is connected with the push plate 35. The first electric cylinder is adapted to drive the push plate 35 to move vertically, thereby pressurizing or depressurizing the main spring 33.

[0065] The working principle and specific structure of the electric cylinder are both prior art, and will not be described in detail here. According to actual production needs, a pneumatic cylinder or other linear drive component can be replaced.

[0066] Further, as shown in Figure 3 , the adjusting assembly 3 can further comprise a control assembly arranged in front of the pulling assembly 2. The control assembly comprises a controller and multiple thickness measuring sensors 36 corresponding to the segmented rollers 22 and used for monitoring the thickness of the sheet material about to enter between the segmented rollers 22 and the driving roller 21. The controller is connected with the thickness measuring sensors 36 and the linear drive mechanism 34, respectively.

[0067] When the thickness sensor 36 detects an increase in the sheet thickness, the controller controls the linear drive mechanism 34 to move the corresponding push plate 35 upward.

[0068] When the thickness sensor 36 detects a decrease in the sheet thickness, the controller controls the linear drive mechanism 34 to move the corresponding push plate 35 downward.

[0069] Specifically, such as Figure 3 As shown, the thickness sensor 36 can be a through-beam type. The thickness sensor 36 is divided into two sets of sensors that are opposite each other in the vertical direction. One set is set on the support part 11 and the other set on the movable part 12. The sheet material conveying path is located between the two sets of sensors. When the sheet material passes between the two sets of sensors, the thickness sensor 36 feeds back the sheet material thickness data to the controller, and the controller controls the linear drive mechanism 34 to make corresponding actions.

[0070] The change in sheet thickness and the displacement of segmented roller 22 in the vertical direction can be equal, or a more accurate displacement can be calculated to ensure that the pressure on the sheet is stable after each adaptive adjustment. This part can be adjusted according to actual production needs, so as to achieve the effect of pressurizing or depressurizing the main spring 33 after the push plate 35 is actuated, thereby improving the stability of traction to a certain extent.

[0071] It should be noted that the thickness sensor 36 is existing technology, and its specific structure and working principle will not be described in detail here. Different types and models can be selected according to actual production needs, as long as they can monitor the thickness of the sheet in real time and match the actual traction speed and the required response speed.

[0072] In this embodiment, the linear drive mechanism 34 drives the push plate 35 to move, thereby actively adjusting the pressure of the main spring 33 by increasing or decreasing the pressure. The adjustment can be divided into two cases. One is to reduce the pressure when the sheet gets thicker: when the thickness sensor 36 detects that the local thickness of the sheet has increased, it feeds the signal back to the controller. The controller controls the corresponding linear drive mechanism 34 to drive the push plate 35 to move upward, reducing the compression of the main spring 33. This avoids the moving plate 32 being pushed upward and squeezing the main spring 33 when the sheet gets thicker, which would cause excessive pressure on the sheet. This prevents the sheet from being excessively squeezed and deformed or the traction resistance from suddenly increasing, resulting in wrinkles.

[0073] Secondly, pressure is applied when the sheet becomes thinner: when the thickness sensor 36 detects that the local thickness of the sheet has become thinner, it sends a signal to the controller. The controller controls the corresponding linear drive mechanism 34 to move the push plate 35 downward, increasing the compression of the main spring 33, so that the segmented roller 22 can better press against the sheet and avoid slipping when the sheet becomes thinner.

[0074] like Figure 1As shown, the rack 1 comprises a support part 11 and a movable part 12, the movable part 12 is slidingly arranged on the support part 11, the adjusting assembly 3 is arranged on the movable part 12, the support part 11 is provided with a first lifting mechanism 13, the first lifting mechanism 13 is connected with the movable part 12 to drive the movable part 12 to move vertically, and then drive all the adjusting assemblies 3 and the segmented rollers 22 corresponding to the adjusting assemblies 3 to move.

[0075] The first lifting mechanism 13 comprises a second electric cylinder, the second electric cylinder is mounted on the support part 11, the movable end of the second electric cylinder is connected with the movable part 12, and the second electric cylinder is started to drive the movable part 12 to move, and then change the distance between the segmented rollers 22 and the driving roller 21.

[0076] When replacing the sheet material with different thickness, the operator can adjust the positions of all the segmented rollers 22 through the control of the first lifting mechanism 13 to adapt to the conveying of sheet material with different thickness, and the first lifting mechanism 13 is used for pre-pressing treatment, after passing through the sheet material, the first lifting mechanism 13 is started to drive all the segmented rollers 22 to move downward, so that the segmented rollers 22 press on the sheet material and exert pressure on the sheet material, and the main spring 33 is compressed, and the degree of pre-pressing is controlled by the first lifting mechanism 13.

[0077] The working principle of the embodiment is as follows:

[0078] The sheet material is passed between the driving roller 21 and the segmented rollers 22, the first lifting mechanism 13 is started to drive all the segmented rollers 22 to move downward as a whole, so that the segmented rollers 22 press on the sheet material and press the sheet material on the driving roller 21, and the pre-pressing of the main spring 33 is completed at the same time;

[0079] The main driving mechanism 23 is started to drive the driving roller 21 to rotate, and the driving roller 21 drives the sheet material to move, and the segmented rollers 22 rotate in the process of moving the sheet material;

[0080] With the continuous movement of the sheet material, the segmented rollers 22 adaptively adjust the positions according to the actual thickness of the sheet material contacted each time, and the main spring 33 is used to keep the segmented rollers 22 in contact with the sheet material and adjust the pressure;

[0081] When the sheet material becomes thin, the segmented rollers 22 move downward, the main spring 33 is in a partially released state, the push plate 35 is driven to move downward by the linear driving mechanism 34, so that the main spring 33 is further compressed, avoiding slipping when the sheet material becomes thin;

[0082] When the sheet material becomes thick, the segmented rollers 22 move upward, the main spring 33 is in a further compressed state, the push plate 35 is driven to move upward by the linear driving mechanism 34, so that the main spring 33 is partially released, avoiding excessive pressure when the sheet material becomes thick.

[0083] Embodiment two: asFigures 4-5 As shown, this embodiment further includes the following structure based on embodiment one: a wrinkle removal component 4 is provided in front of the traction component 2 in the conveying direction. The wrinkle removal component 4 is adapted to first contact the sheet and then perform wrinkle removal on the sheet, and then the sheet contacts the traction component 2 again.

[0084] At least one support roller 41 is provided below the wrinkle removal component 4. The support roller 41 is rotatably mounted on the frame 1. The support roller 41 is adapted to support the sheet material so that the sheet material is located between the support roller 41 and the wrinkle removal component 4.

[0085] The wrinkle removal component 4 includes two wrinkle removal parts 42 arranged side by side and a mounting platform 43 corresponding to the wrinkle removal parts 42. The wrinkle removal parts 42 are disposed in the corresponding mounting platform 43, and the mounting platform 43 is disposed on the frame 1.

[0086] The wrinkle-removing component 42 includes a circulating motion mechanism 44 and a plurality of unfolding mechanisms 45. The plurality of unfolding mechanisms 45 are spaced apart on the corresponding circulating motion mechanism 44. The circulating motion mechanism 44 is adapted to drive the unfolding mechanism 45 to perform unidirectional circulating motion and to contact the sheet. The unfolding mechanism 45 is adapted to push the wrinkles of the sheet.

[0087] The two cyclic motion mechanisms 44 move in opposite directions.

[0088] like Figure 6 As shown, the unfolding mechanism 45 includes a mounting plate 46, on which a plurality of circumferentially distributed mounting grooves 47 are provided, and a flexible brush is provided in the mounting grooves 47.

[0089] A bracket 48 is provided on the mounting plate 46, and the bracket 48 is connected to the corresponding cyclic motion mechanism 44.

[0090] The flexible brush is not shown in the figure. Its material is a high molecular polymer fiber, specifically nylon, polyester or polypropylene, etc. Nylon is preferred. The flexible brush can be treated with antistatic treatment and the ends can be rounded.

[0091] Specifically, in this embodiment, such as Figure 6 As shown, the mounting groove 47 is a straight groove, and the flexible brush is arranged in strips in the mounting groove 47 and fills the entire mounting groove 47.

[0092] In another embodiment, such as Figure 7 As shown, the mounting groove 47 is set as an inclined groove. The flexible brush is arranged in strips along the inclined angle of the mounting groove 47 and fills the entire mounting groove 47. When the mounting plate 46 is rotated, it enhances the treatment effect on longitudinal wrinkles and also has a better treatment effect on inclined wrinkles.

[0093] like Figures 5-6As shown, in the embodiment, the circulating movement mechanism 44 comprises a second motor 49, a sliding rail 410, a chain 411 and two chain wheels 412, the second motor 49 and the sliding rail 410 are both mounted on the mounting table 43, the two chain wheels 412 are rotatably mounted on the mounting table 43, the chain 411 is assembled on the two chain wheels 412, the output end of the second motor 49 is connected with one of the chain wheels 412, thereby driving the chain wheel 412 to rotate;

[0094] The bracket 48 is connected on the chain 411 to be suitable for following the movement of the chain 411, the bracket 48 is provided with a guide wheel 413, the sliding rail 410 is provided with a guide groove, the guide wheel 413 is slidingly arranged in the guide groove to improve the stability of the movement of the bracket 48.

[0095] When the one-way circulating movement of the several unfolding mechanisms 45 needs to be driven, the second motor 49 is started to drive the chain wheel 412 and the chain 411 to move, that is, to drive the unfolding mechanism 45 to move along the track of the movement of the chain 411, and to perform the wrinkle removing work.

[0096] The sheet needs to pass through the wrinkle removing assembly 4 first and then contact with the traction assembly 2 in the process of conveying, so as to ensure the effect of traction, the sheet is conveyed to the position of the supporting roller 41 and abuts against the outer surface of the supporting roller 41, the supporting roller 41 plays a supporting role on the sheet, the circulating movement mechanism 44 is located above the supporting roller 41, and the sheet supported by the supporting roller 41 is subjected to the wrinkle removing treatment, the circulating movement mechanism 44 located on the left side drives the several flexible brushes to move from right to left when contacting with the sheet, and the circulating movement mechanism 44 located on the right side drives the several flexible brushes to move from left to right when contacting with the sheet, the flexible brushes contact with the sheet and apply a certain pressure in the process of movement, on this basis, the wrinkles existing on the sheet are pushed away through the circulating movement of the several flexible brushes, the pressure applied on the sheet by the flexible brushes can be realized by changing the length of the flexible brushes or adjusting the height of the entire mounting table 43, and the contact of the flexible brushes with the sheet driven by the circulating movement mechanism 44 can improve the wrinkle removing range of the flexible brushes;

[0097] The wrinkles on the sheet can be roughly divided into horizontal wrinkles and longitudinal wrinkles, the horizontal wrinkles are consistent with the conveying direction of the sheet, the flexible brushes contact with the sheet when moving to the position below the mounting table 43, that is, close to the side of the sheet, the sheet contacts with the flexible brushes in the process of continuous movement, the flexible brushes keep contacting with the continuously moving sheet and apply a certain counter pressure, so as to push away the horizontal wrinkles, and the longitudinal wrinkles are pushed away through the continuous movement of the flexible brushes in the longitudinal direction driven by the circulating movement mechanism 44;

[0098] It should be noted that the movement direction of the unfolding mechanism 45 driven by the two circulating movement mechanisms 44 is opposite, and this part can be controlled by the forward and reverse rotation of the second motor 49 corresponding to the two circulating movement mechanisms 44. The chain 411 is composed of a plurality of individual link plates, and the support 48 in each unfolding mechanism 45 is arranged on a separate link plate, so that all the unfolding mechanisms 45 move synchronously with the chain 411 as a whole.

[0099] Further, the circulating movement mechanism 44 and the sheet are in a working area, and the circulating movement mechanism 44 is above a non-working area. When the circulating movement mechanism 44 drives a part of the flexible brushes to move in the working area, the plurality of flexible brushes in this part continuously and sequentially perform wrinkle removal treatment on each part of the sheet in the working area.

[0100] When the circulating movement mechanism 44 drives another part of the flexible brushes to move in the non-working area, the plurality of flexible brushes in this part do not contact the sheet to adapt to the recovery of their own shape.

[0101] Specifically, when the circulating movement mechanism 44 drives the flexible brushes to move in the working area, each flexible brush will completely contact the sheet in the working area once to reduce the dead angle.

[0102] In addition to improving the range of wrinkle removal treatment of the flexible brushes on the sheet, compared with the flexible brushes arranged at a fixed position and rotating, the work of each flexible brush is intermittent. When the treatment is completed, the flexible brush enters the non-working area to recover the elasticity and heat dissipation, reduces fatigue and permanent deformation, and improves the service life and consistency of all flexible brushes.

[0103] As shown in Figure 5 , 6 The mounting plate 46 is rotatably mounted on the corresponding support 48, the mounting plate 46 is connected with a driving gear 414, the mounting table 43 is connected with a first rack 415, and the first rack 415 is located on the side close to the supporting roller 41. When the circulating movement mechanism 44 drives the flexible brushes to move below the mounting table 43, the driving gear 414 is engaged with the first rack 415, thereby driving the mounting plate 46 to rotate as a whole.

[0104] When the whole unfolding mechanism 45 is driven and moved to the side close to the supporting roller 41 below the mounting table 43, the driving gear 414 is engaged with the first rack 415, and since the first rack 415 is fixed, the driving gear 414 is rotated in the process of engagement, thereby driving the mounting plate 46 and the flexible brush to rotate. On the basis of the original one-way and continuous scraping force of the flexible brush on the wrinkle, the contact with the wrinkle becomes intermittent and pushes and pulls the wrinkle, avoiding stress generated in the process of continuous pushing and pulling of the wrinkle, or finally leading to accumulation of the wrinkle at a certain place of the sheet. The first rack 415 is located above the driving gear 414, that is, the driving gear 414 corresponding to the left circulating motion mechanism 44 rotates from right to left in the engaged state with the first rack 415, and the driving gear 414 corresponding to the right circulating motion mechanism 44 rotates from left to right in the engaged state with the first rack 415.

[0105] As shown in Figure 4 , two second lifting mechanisms 61 corresponding to the mounting tables 43 are arranged on the rack 1, the second lifting mechanisms 61 are connected with the corresponding mounting tables 43, and the mounting tables 43 are arranged on the rack 1 in a sliding manner in the vertical direction. The two second lifting mechanisms 61 are used to control the corresponding mounting tables 43 to move in the vertical direction respectively.

[0106] In this embodiment, the operator can change the height of the corresponding mounting table 43 in the vertical direction by controlling the second lifting mechanism 61 according to actual needs, thereby changing the pressure generated by the flexible brush in the corresponding unfolding mechanism 45 on the sheet on the mounting table 43.

[0107] When the sheet is prone to large wrinkles, the mounting table 43 is controlled to move towards the sheet to increase the pressure generated by the flexible brush on the sheet, thereby improving the wrinkle removal effect. Conversely, when the wrinkles generated in the process of traction of the sheet are small, the mounting table 43 can be controlled to move away from the sheet, thereby reducing the pressure applied to the sheet.

[0108] Further, a visual detection device can be arranged to monitor the sheet at the wrinkle removal assembly 4 in real time during traction, the controller is connected with the visual detection device and the second lifting mechanism 61 respectively, the visual detection device processes data after monitoring the size of the wrinkle on the sheet and feeds back to the controller, the second lifting mechanism 61 is controlled in real time by the controller to achieve better wrinkle removal effect. The visual detection device is not shown in the figure, and its specific structure and working principle are prior art, which will not be described in detail here.

[0109] Specifically, as shown in Figure 4 , the second lifting mechanism 61 includes a third electric cylinder, the third electric cylinder is installed on the rack 1, and the movable end of the third electric cylinder is connected with the mounting table 43 to drive the mounting table 43 to move in the vertical direction, thereby adjusting the height of the mounting table 43.

[0110] The working principle of the embodiment is as follows:

[0111] The sheet passes between the flexible brush and the supporting roller 41, the flexible brush exerts pressure on the surface of the passing sheet when it is in the initial position, the sheet contacts the driving roller 21 and the segmented roller 22 after passing the flexible brush, the flexible brush is driven to move in a cycle by the cycle movement mechanism 44, and the sheet in contact with the flexible brush is subjected to wrinkle removal treatment in the cycle movement process;

[0112] The flexible brush always contacts the sheet and exerts a certain counter pressure in the direction of the sheet movement, thereby treating the transverse wrinkles, and the flexible brush moves in the longitudinal direction of the sheet under the drive of the cycle movement mechanism 44, and the longitudinal wrinkles are treated in the movement process.

[0113] Embodiment three: as shown in Figure 5 、 8 , 9, 10, the embodiment further comprises the following structure on the basis of embodiment one: at least one grooming and cleaning assembly 5 is arranged on the mounting table 43, the grooming and cleaning assembly 5 comprises a grooming roller 51, the grooming roller 51 is rotatably installed on the corresponding mounting table 43, a plurality of circumferentially distributed fins 52 for grooming the flexible brush are arranged on the grooming roller 51, and the grooming roller 51 is adapted to be passively rotated, thereby driving the fins 52 to rotate in contact with the flexible brush.

[0114] A second rack 53 is arranged on one side of the mounting table 43 close to the grooming and cleaning assembly 5, when the cycle movement mechanism 44 drives the flexible brush to move above the mounting table 43, the driving gear 414 is engaged with the second rack 53, and the rotation direction of the flexible brush is opposite to the rotation direction of the grooming roller 51.

[0115] Specifically, in order to improve the recovery speed of the flexible brush in the non-working area due to the possible bending or knotting of the sheet during wrinkle removal, the grooming and cleaning assembly 5 is arranged in the non-working area, when a part of the flexible brush is moved in the non-working area under the drive of the cycle movement mechanism 44, the plurality of flexible brushes in the part are in turn contacted with the fins 52 on the grooming roller 51, when the fins 52 are inserted into the strip-shaped flexible brush, the part with knotting at the insertion position can be loosened by the rotation of the grooming roller 51, and then the flexible brush is divided into bundles and located between two fins 52;

[0116] When the bundle-shaped flexible brush is located between the two fins 52, the two fins 52 can limit the originally bent flexible brush, support the bent part of the flexible brush, and actively straighten the flexible brush.

[0117] In the embodiment, the flexible brush subjected to the wrinkle removing treatment is driven by the circulating movement mechanism 44 to the combing roller 51, and is combed and regulated by the fins 52, so that the portions of the flexible brush bent or knotted during the treatment of the wrinkles are reset;

[0118] The rotating direction of the combing roller 51 is opposite to that of the flexible brush, and when the fins 52 on the combing roller 51 contact the flexible brush, the knotted portions on the flexible brush can be better opened.

[0119] As shown in FIGS. Figure 5 , 8 , 9, 10, the combing and cleaning assembly 5 further comprises a third motor 54 and a receiving plate 55. The combing roller 51 is hollow, and the receiving plate 55 is fixedly arranged on the corresponding mounting table 43 and located in the combing roller 51. The receiving plate 55 is provided with a receiving groove with an upward opening. The bottom of the receiving plate 55 abuts against the inner wall of the lower half of the combing roller 51. A through groove 56 is arranged between two adjacent fins 52. The through groove 56 comprises an inlet and an outlet. The inlet is connected to the outside of the combing roller 51, and the outlet is connected to the inner cavity of the combing roller 51. A scraper 57 connected to the combing roller 51 is arranged at the inlet. When the flexible brush contacts the scraper 57, the impurities on the flexible brush are scraped off and guided into the through groove 56.

[0120] The through groove 56 is provided with a retention groove 58. The impurities entering the through groove 56 first exist in the retention groove 58. When the combing roller 51 rotates to a position where the through groove 56 is located above the receiving groove, the impurities in the retention groove 58 fall into the receiving groove.

[0121] Specifically, the flexible brush can remove the impurities on the sheet during the wrinkle removing work, so as to avoid the change of the friction force between the sheet and the traction assembly 2 due to the impurities, thereby affecting the traction effect.

[0122] Meanwhile, the excessive retention of the impurities on the flexible brush can be avoided, so that the flexible brush does not appear to be knotted and cannot effectively perform the wrinkle removing work.

[0123] In the embodiment, the third motor 54 drives the combing roller 51 to rotate. The fins 52 contact the flexible brush during the rotation of the combing roller 51. After the flexible brush contacts the fins 52, the flexible brush enters the gap between the adjacent fins 52, so that the disordered or deformed and bent portions of the flexible brush caused by the pushing away of the wrinkles are regulated. The rotating direction of the combing roller 51 is opposite to the self-rotating direction of the flexible brush, and the rotating direction of the output shaft of the third motor 54 can be controlled to achieve the opposite rotating direction.

[0124] When the unfolding mechanism 45 is driven by the circulating movement mechanism 44 and moves above the mounting table 43, the driving gear 414 engages with the second rack 53. Under the continuous movement of the unfolding mechanism 45, the driving gear 414 continuously rotates and drives the flexible brush to rotate. Under the rotation of the flexible brush, the contact frequency between the fin 52 and the flexible brush is strengthened.

[0125] The flexible brush is in contact with the outer surface of the combing roller 51 while being separated and regularized by the fin 52. In the process of contact, the flexible brush is in abutment with the scraper 57. The scraper 57 scrapes the impurities attached to the flexible brush and guides them into the through groove 56. In the through groove 56, the impurities are temporarily stored in the retention groove 58 to avoid the impurities falling off during the rotation of the combing roller 51. When the through groove 56 rotates with the combing roller 51 to the upper position, the impurities in the retention groove 58 fall into the inner cavity of the combing roller 51 and finally fall into the storage groove for collection.

[0126] The above specific embodiments further illustrate the technical problems solved by the present application, technical solutions and beneficial effects. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A packaging sheet traction device, characterized in that... ,include: frame; The traction assembly includes a drive roller, a driven roller, and a main drive mechanism. The drive roller is rotatably mounted on the frame, and the main drive mechanism is mounted on the frame and connected to the drive roller to drive the drive roller to rotate, thereby traction the sheet to move forward. The sheet passes between the drive roller and the driven roller and abuts against them. Wherein: the driven roller includes several segmented rollers arranged side by side; The frame is provided with a plurality of adjustment components corresponding to the segmented rollers. Each adjustment component includes a housing, a movable plate and a main spring. The housing is connected to the frame. The movable plate is slidably disposed in the housing in the vertical direction. The segmented rollers are rotatably mounted on the movable plate. A push plate is provided on the housing. One end of the main spring is connected to the push plate on the housing, and the other end of the main spring is connected to the movable plate. The traction assembly is provided with a wrinkle-removing assembly in front of it in the conveying direction. The wrinkle-removing assembly is adapted to first contact the sheet and then perform wrinkle removal on the sheet, and then the sheet contacts the traction assembly again. At least one support roller is provided below the wrinkle removal component. The support roller is rotatably mounted on the frame and is adapted to support the sheet material so that the sheet material is located between the support roller and the wrinkle removal component. The wrinkle removal assembly includes two wrinkle removal components arranged side by side and a mounting platform corresponding to each wrinkle removal component. The wrinkle removal components are disposed within the corresponding mounting platforms, and the mounting platforms are disposed on the frame. The wrinkle-removing component includes a cyclic motion mechanism and several unfolding mechanisms. The several unfolding mechanisms are spaced apart on the corresponding cyclic motion mechanism. The cyclic motion mechanism is adapted to drive the unfolding mechanism to perform unidirectional cyclic motion and contact the sheet. The unfolding mechanism is adapted to push the wrinkles of the sheet. The two cyclic motion mechanisms move in opposite directions; The unfolding mechanism includes a mounting plate, on which a plurality of circumferentially distributed mounting grooves are formed, and a flexible brush is provided in the mounting grooves. The mounting plate is provided with a bracket, which is connected to the corresponding cyclic motion mechanism. The mounting plate is rotatably mounted on the corresponding bracket. A drive gear is connected to the mounting plate, and a first rack is connected to the mounting platform. The first rack is located near the support roller. When the circulating motion mechanism drives the flexible brush to move below the mounting platform, the drive gear meshes with the first rack, thereby driving the mounting plate to rotate as a whole. At least one combing and cleaning component is provided on the mounting platform. The combing and cleaning component includes a combing roller, which is rotatably mounted on the mounting platform. The combing roller is provided with a plurality of circumferentially distributed fins. The combing roller is adapted to be rotated, thereby driving the fins to rotate and contact the flexible brush. A second rack is provided on the side of the mounting platform near the combing and cleaning component. When the circulating motion mechanism drives the flexible brush to move above the mounting platform, the drive gear meshes with the second rack, and the rotation direction of the flexible brush is opposite to the rotation direction of the combing roller.

2. The packaging sheet traction device according to claim 1, characterized in that: The adjustment assembly also includes a linear drive mechanism; The linear drive mechanism is connected to the corresponding housing, and the push plate is connected to the corresponding linear drive mechanism. The linear drive mechanism is adapted to drive the push plate to move vertically, thereby applying pressure or depressurizing the main spring. When the segmented roller is pushed upward by the sheet, the linear drive mechanism drives the push plate upward, thereby reducing the pressure on the main spring; When the segmented roller is pushed downward by the sheet and remains in contact with the sheet, the linear drive mechanism drives the push plate downward, thereby applying pressure to the main spring.

3. The packaging sheet traction device according to claim 1 or 2, characterized in that: The frame includes a support part and a movable part. The movable part is slidably disposed on the support part. The adjustment component is disposed on the movable part. The support part is provided with a first lifting mechanism. The first lifting mechanism is connected to the movable part to drive the movable part to move vertically, thereby driving all the adjustment components and the segmented rollers corresponding to the adjustment components to move.

4. The packaging sheet traction device according to claim 1, characterized in that: The frame is provided with two second lifting mechanisms corresponding to the mounting platform. The second lifting mechanisms are connected to the corresponding mounting platforms. The mounting platforms are slidably mounted on the frame in the vertical direction. The two second lifting mechanisms are used to control the movement of the corresponding mounting platforms in the vertical direction.

5. The packaging sheet traction device according to claim 1, characterized in that: The combing and cleaning assembly also includes a third motor and a storage plate. The combing roller is hollow, and the storage plate is fixedly mounted on the corresponding mounting platform and located inside the combing roller. The storage plate has an upward-facing storage groove. The bottom of the storage plate abuts against the lower half of the inner wall of the combing roller. A through groove is formed between two adjacent fins. The through groove includes an inlet and an outlet. The inlet is connected to the outside of the combing roller, and the outlet is connected to the inner cavity of the combing roller. A scraper connected to the combing roller is provided at the inlet. The scraper is adapted to scrape off impurities on the flexible brush and guide them into the through groove when it comes into contact with the flexible brush.

6. The packaging sheet traction device according to claim 5, characterized in that: The channel is provided with a retention groove. Impurities that are introduced into the channel are first stored in the retention groove. When the carding roller rotates to the point where the channel is above the collection groove, the impurities in the retention groove fall into the collection groove.

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