Film labeling device and labeling method

Abstract

The present invention relates to the field of film labeling processing equipment, and specifically discloses a film labeling equipment and a labeling method, including a machine base, a label supply device and a film conveying device; the label supply device includes a label stripping plate and a label suction module; the label stripping plate is arranged on the machine base; the stripped label on the label stripping plate is opposite to the label suction module at the label suction position, and the label stripping plate and the label suction module are staggered at the avoidance position, and the film conveying device includes a film conveying roller and a positioning roller module, wherein the positioning roller module includes a roller connector and a positioning roller rotatably arranged on the roller connector, the film on the film conveying roller passes through the positioning roller and is supported on the roller, and a linkage rod is arranged on the roller connector, and the linkage rod can drive the positioning roller and the label stripping plate to generate linkage. The labeling equipment and the labeling method using the labeling equipment can save the label feeding time of the label suction module to improve the efficiency of film labeling.

Description

Technical Field

[0001] The present invention relates to the field of film labeling processing equipment, and in particular to a film labeling equipment and a labeling method with film labeling and winding functions. Background Art

[0002] As is known, the existing film labeling equipment is generally composed of a film conveying line and a labeling module arranged beside the film conveying line, wherein the main structure of the labeling module includes: a stepper motor, a label paper reeling roller, a plurality of conveying rollers, a peeling plate and a movable labeling component. The movable labeling component includes a telescopic cylinder and a negative pressure adsorption label head connected to the telescopic cylinder. The process of labeling using the above film labeling equipment is roughly as follows:

[0003] S1: Turn on the stepper motor to drive the label paper winding roller to rotate, and the label paper is transported to the peeling plate via the conveying roller for label peeling; S2: The movable labeling component moves to the top of the peeling plate so that the negative pressure adsorption label head can adsorb the peeled label; S3: Move the peeling plate so that it is staggered with the movable labeling component in the longitudinal direction (or labeling direction); S4: Transport the film to be labeled along the conveying line, and at the same time, the movable labeling component moves to the upper surface of the film to be labeled below; S5: Put the label on the film, and then reset the movable labeling component and the peeling plate. The following problems may arise when using the above-mentioned film labeling equipment and method:

[0004] First, after the above-mentioned adsorption head absorbs the peeled label, the peeling plate is located between the head and the section of the film to be labeled. Therefore, before labeling, the peeling plate needs to be moved away from the labeling direction, which prolongs the label delivery time of the head. After the peeling plate is moved away, the head needs to move to the section of the film to be labeled to complete the film labeling. This label delivery journey of the head still takes a certain amount of time. The above reasons will slow down the speed of film labeling and reduce the efficiency. Furthermore, when the head fails to absorb the label due to air pressure or blockage, resulting in no label being attached to the section of the film to be labeled, the above-mentioned labeling equipment cannot re-label the film. Alternatively, the film conveyor line can be reversed, the film returned to the original labeling position and re-labeled, but this process requires repeated adjustment of the micro-tension of the film to ensure that the surface of the film is flat and does not produce stretching deformation during large-span transmission. Secondly, it is necessary to adjust the transmission speed of the film and the deviation correction control in the conveying direction multiple times so that the film labeling section can cooperate with the labeling head for alignment labeling and prevent deviation in the labeling position on the film. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a film labeling device and a labeling method. The labeling device and the labeling method using the labeling device can save the label feeding time of the label suction module to improve the efficiency of film labeling.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] The embodiment of the present invention firstly discloses a film labeling equipment, comprising a machine base, a label supply device and a film conveying device; wherein the label supply device comprises a label stripping plate and a label suction module; the label stripping plate is arranged on the machine base in a manner that it can move between a label suction position and an avoidance position; the label suction module is located above the label stripping plate; at the label suction position, the stripped label on the label stripping plate is opposite to the label suction module, and at the avoidance position, the label stripping plate and the label suction module are staggered; the film conveying device comprises a film conveying roller and a positioning roller module, wherein the positioning roller module comprises a roller connecting member and a positioning roller rotatably arranged on the roller connecting member, the film on the film conveying roller passes through the positioning roller and is supported on the roller, a linkage rod is arranged between the roller connecting member and the label stripping plate, and the linkage rod is configured to be able to drive the positioning roller and the label stripping plate to generate linkage, so that when the label stripping plate is in the avoidance position, the positioning roller is located at the label suction position, and when the label stripping plate is in the label suction position, the positioning roller is staggered with the label suction module.

[0008] In order to optimize the above technical solutions, the following technical measures are also taken:

[0009] Preferably, the machine base has a guide rail extending in the transverse direction, the guide rail is provided with a guide block matching it, the label peeling plate is provided on the guide block, and the machine base is also provided with a cylinder, the plug rod of the cylinder is connected to the guide block.

[0010] Preferably, the label suction module comprises a mounting seat, a second cylinder and a negative pressure label suction head, wherein the mounting seat is connected to the machine base, the second cylinder can be longitudinally telescopically arranged on the mounting seat, and the label suction head is connected to the plug rod of the second cylinder.

[0011] Preferably, the roller connecting member is a pair of rotating arms connected to the machine base through a rotating shaft, the positioning roller is connected between the pair of rotating arms, one end of the linkage rod is connected to the label peeling plate through a hinge, and the other end is connected to the rotating arm through a hinge.

[0012] Preferably, the film conveying device further comprises a tensioning roller, wherein the tensioning roller is connected to the machine base in an adjustable position, and the film passes through the tensioning roller and at least a part of the film is wrapped around the tensioning roller.

[0013] Preferably, a limiting sleeve for limiting the rotation angle of the rotating arm is further provided on the machine base, and a torsion spring is provided between the limiting sleeve and the rotating arm.

[0014] Preferably, the film conveying device further comprises a pair of pressing rollers arranged behind the positioning roller module along the conveying direction of the film, and the film output from the positioning roller module passes through the gap between the pair of pressing rollers.

[0015] Preferably, the roller connecting member is a movable seat that can move in a horizontal direction, the positioning roller is rotatably connected to the movable seat, and a reversing roller is rotatably provided on the movable seat. In the conveying direction of the film, the positioning roller and the adjusting roller are between two film conveying rollers, and the film is wrapped around the positioning roller and the adjusting roller in an S shape, and a first film traveling distance is formed between the positioning roller and the previous film conveying roller, and a second film traveling distance is formed between the adjusting roller and the next film conveying roller, and the films between the first film traveling distance and the second film traveling distance are arranged horizontally and in parallel.

[0016] The embodiment of the present invention further discloses a labeling method using the above-mentioned film labeling device, comprising the following steps:

[0017] S1, a pre-positioning step of the label paper and the film in their respective conveying directions; the pre-positioning step comprises: S1-1, driving the label paper conveying roller to operate until the label paper is located in front of the peeling blade on the label peeling plate in its conveying direction; S1-2, driving the film conveying roller to operate until the section to be labeled on the film is located in front of the positioning roller in the film conveying direction;

[0018] S2, a step of adjusting the height position and the pressure of the label head of the label suction module, i.e. adjusting the height position of the label suction module from the label stripping plate and the pressure of the label head so that the label on the label stripping plate can be sucked by the label head of the label suction module after being stripped;

[0019] S3, a first rate setting step, i.e. setting the starting time and moving rate of the label peeling plate between the label suction position and the avoidance position, and setting the conveying rate of the film at the same time, so that when the positioning roller is at the label suction position, the film on its roller can be in the section to be labeled in step S1;

[0020] S4, a second rate setting step, i.e. setting the moving rate and labeling pressure of the label suction module when labeling downward, so that when the positioning roller is at the label suction position, the label absorbed by the label head of the label suction module can be attached to the section of the film to be labeled in S3;

[0021] S5. According to the parameters set in the first rate setting step and the second rate setting step, the label suction module is started and kept running in a cycle while driving the label paper conveying roller and the film conveying roller to operate until the labeling work on the film is completed.

[0022] Preferably, the linkage rod is a telescopic rod arranged between the movable base and the label peeling plate, the base includes a fixed base and a movable base, the movable base is movably arranged on the fixed base, the film conveying device is arranged on the movable base, and the label supply device is arranged on the fixed base.

[0023] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0024] First, in the embodiment of the present invention, by setting the linkage rod, the label peeling plate and the positioning roller module, the movement process of the label peeling plate in the direction of avoiding the label suction module and the movement process of the positioning roller in the direction of the label suction position, that is, the alignment direction between the label suction module and the label suction module are synchronously performed, and when the label suction module is in the avoidance position, the positioning roller is just located at the label suction position, and the label suction module directly performs the labeling action on the film to be labeled on the positioning roller. Compared with the traditional solution, this solution can make the labeling alignment process and the avoidance process of the label peeling plate parallel, save the standby time of the label suction module, save the label delivery time and travel of the label suction module, and thus effectively improve the efficiency of film labeling.

[0025] Furthermore, in the embodiment of the present invention, by setting the linkage rod between the movable seat and the label peeling plate as a telescopic rod, the positioning roller module can be moved by adjusting the length of the telescopic rod and the missing label section on the film can be repositioned in front of the positioning roller. By adjusting the position of the movable base, the positioning roller can be repositioned at the label suction position, and then the label supplement and cyclic labeling can be completed. Compared with the traditional solution, this solution does not need to repeatedly adjust the tension of the film during the label supplement process, and can effectively prevent the thin film from being stretched and deformed during the label supplement process, thereby ensuring the quality of the labeling film. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0027] Figure 1 is a front structural schematic diagram of the first embodiment;

[0028] Figure 2 It is a schematic diagram of the structure on the left side of the first embodiment;

[0029] Figure 3It is a schematic diagram of the right side structure of the first embodiment;

[0030] Figure 4 It is a schematic diagram of the structure of some parts in the first embodiment;

[0031] Figure 5 is a front structural schematic diagram of Embodiment 2;

[0032] Figure 6 It is a schematic diagram of the structure of some parts in the second embodiment.

[0033] Reference numerals:

[0034] In the first embodiment: the machine base 1; the label supply device 2; the label paper conveying roller 21; the rewinding wheel 1 22; the unwinding wheel 1 23; the stepping motor 24; the label peeling plate 25; the guide rail 1 251; the guide block 1 252; the cylinder 1 253; the label suction module 26; the cylinder 2 261; the label suction head 262; the mounting seat 263; the film conveying device 3; the film conveying roller 31; the rewinding wheel 2 32; the unwinding wheel 2 33; the pressing roller 35; the tensioning roller 37; the guide rail 2 371; the guide block 2 372; the self-locking cylinder 373; the positioning roller module 38; the positioning roller 381; the roller connecting member 382; the torsion spring 384; the limiting sleeve 385; the linkage rod 4. In the second embodiment: the positioning roller module 48; the positioning roller 481; the reversing roller 482; the guide rail 3 483; the guide column 485, and the rest are the same as the first embodiment. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various configurations. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] Unless otherwise defined, the technical terms or scientific terms used in this patent document shall have the usual meanings understood by persons with ordinary skills in the field to which the invention belongs. The words "first", "second" and similar words used in the patent specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "one" or "the" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0038] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0039] Embodiment 1:

[0040] See also Figures 1 to 3The present embodiment provides a film labeling device, including a machine base 1, a label supply device 2 and a film conveying device 3. The label supply device 2 includes a winding wheel 22, an unwinding wheel 23, a plurality of label paper conveying rollers 21, a label peeling plate 25 and a label suction module 26. The label paper wound on the unwinding wheel 23 is wound on the winding wheel 22 via the label paper conveying roller 21 and the label peeling plate 25. The label paper conveying roller 21 includes a driving conveying roller and a driven conveying roller, wherein the driving conveying roller is dragged by a stepping motor 24, and the winding wheel 22 and the stepping motor 24 are connected by an O-belt transmission that can play an overload protection role. The label peeling plate 25 includes a support platform for supporting the label paper and a split-point peeling blade formed at one end of the support platform, and the label paper is wrapped around the peeling blade and the label is separated from the label paper when passing through the peeling blade. In some embodiments, the label suction module 26 can also be used to first suck the label to be separated on the label paper, so that the label is easier to separate from the label paper when passing through the peeling blade. The film conveying device 3 includes a winding wheel 2 32, a unwinding wheel 2 33 and a plurality of film conveying rollers 31. Among them, the plurality of film conveying rollers 31 can be set as idle rollers and connected to the machine base 1 through bearings, and the winding wheel 2 32 can be driven by a servo motor. Of course, one or more of the plurality of film conveying rollers 31 here can also be set as active conveying rollers and driven by a servo motor, thereby increasing the conveying power of the film.

[0041] refer to Figure 4 As shown, in the present embodiment, the label stripping plate 25 is arranged on the machine base 1 in a manner that it can move between a label suction position and an avoidance position. Specifically, the machine base 1 has a guide rail 251 extending in the transverse direction, and a guide block 252 matching the guide rail 251 is arranged on the guide rail 251. The guide block 252 can move left and right along the guide rail 251. The label stripping plate 25 is fixedly arranged on the guide block 252. A cylinder 253 is also arranged on the machine base 1, and a plug rod of the cylinder 253 is connected to the guide block 252. The guide block 252 is pushed to move on the guide rail 251 by the cylinder 253, thereby driving the label stripping plate 25 to move between the label suction position and the avoidance position. The cylinder 253 here is preferably a self-locking cylinder. Figure 4The middle dotted line shows the label stripping plate 25 at the label suction position. At the label suction position, the peeled label on the label stripping plate 25 is opposite to the label suction module 26. The "opposite" mentioned here can be partial or complete opposition between the label suction module 26 and the peeled label. As long as the label suction module 26 can absorb the peeled label, there is no restriction on this. At the avoidance position, the label stripping plate 25 and the label suction module 26 are staggered to make room for the labeling action of the label suction module 26. The label suction module 26 is located above the label stripping plate 25. The label suction module 26 includes a mounting seat 263, a second cylinder 261, and a negative pressure type label suction head 262. The mounting seat 263 is an L-shaped seat plate, which is connected to the machine base 1. The second cylinder 261 is preferably a sliding cylinder with a buffer function. The second cylinder 261 can be telescopically mounted on the mounting seat 263 in the longitudinal direction. The label suction head 262 is connected to the plug rod of the second cylinder 261. The negative pressure label suction head 262 is pushed by the second cylinder 261 to move in the longitudinal direction and implement the labeling action.

[0042] In this embodiment, the film conveying device 3 also includes a positioning roller module 38, wherein the positioning roller module 38 includes a roller connecting member 382 and a positioning roller 381 rotatably arranged on the roller connecting member 382, ​​and the film on the film conveying roller 31 passes through the positioning roller 381 and is supported on the roller, and a linkage rod 4 is arranged between the roller connecting member 382 and the label peeling plate 25, and the linkage rod 4 is configured to be able to drive the positioning roller 381 and the label peeling plate 25 to generate linkage, so that when the label peeling plate 25 is in the avoidance position, the positioning roller 381 is located at the label suction position, and when the label peeling plate 25 is in the label suction position, the positioning roller 381 is staggered with the label suction module 26. When the label paper on the label stripping plate 25 passes through the stripping blade, the negative pressure label suction head 262 of the label suction module 26 first absorbs the peeled label onto the label head, and then the label stripping plate 25 is driven by the cylinder 253 to move from the said label suction position to the avoidance position. At this time, the label paper follows the movement, and the positioning roller module 38 is driven by the linkage rod 4 to rotate from the staggered position staggered with the label suction module 26 to the relative position opposite to the label suction module 26, that is, the label suction position. When the section of the film to be labeled passes through the positioning roller 381, the label suction module 26 moves downward to complete the labeling action. Here, the label stripping plate 25 moves toward the avoidance label suction module 26 and the positioning roller 381 moves toward the label suction position, i.e., toward the alignment direction of the positioning roller 381 and the label suction module 26, which are performed synchronously. When the label suction module 26 is in the avoidance position, the positioning roller 381 is exactly located at the label suction position. At this time, the label suction module 26 can directly label the film to be labeled on the positioning roller 381. In the traditional scheme, the label stripping plate 25 must be moved away from between the label suction head and the film, and then the label suction head is moved to align with the film and complete the label delivery and labeling process. Compared with the traditional scheme, the labeling equipment in this embodiment omits the label delivery process (i.e., the label head moves the label from the position corresponding to the label suction position to the position corresponding to the film on the conveyor line), and makes the labeling alignment process parallel to the avoidance process of the label stripping plate 25, thereby effectively improving the efficiency of film labeling.

[0043] Specifically, the roller connector 382 is a pair of rotating arms connected to the base 1 through a rotating shaft, the positioning roller 381 is connected between the pair of rotating arms through a bearing, the positioning roller 381 is preferably an idle roller, two linkage rods 4 are correspondingly provided, one end of the two linkage rods 4 is respectively connected to the label peeling plate 25 through a hinge, and the other end thereof is respectively connected to the corresponding rotating arm through a hinge. Further, the rotation angle of the rotating arm is preferably set at 10 to 15 degrees and the rotating arm is in a vertical state at the label suction position. For this purpose, a limiting sleeve 385 for limiting the rotation angle of the rotating arm is also provided on the base 1. The limiting sleeve 385 includes a sleeve ring through which the above-mentioned rotating shaft can pass and limiting columns relatively arranged on both sides of the sleeve ring. A torsion spring 384 is provided between the limiting sleeve 385 and the rotating arm. The main function of the torsion spring 384 is to effectively buffer the inertia force of the rotating arm during the initial rotation.

[0044] It should be noted that, in the process of the positioning roller 381 rotating toward the mark suction position, the film traveling on the film conveying roller 31 will be tensioned or relaxed to a certain extent due to the change in the stroke. In order to prevent the film from being over-tensioned and broken or from being over-relaxed and wrinkled on the surface, the film conveying device 3 also includes a tensioning roller 37, which is connected to the machine base 1 in an adjustable position, and the film passes through the tensioning roller 37 and at least part of the film is wrapped around the tensioning roller, so that the tension on the film can be adjusted by adjusting the position of the tensioning roller 37. In some embodiments, the structure for adjusting the position of the tension roller 37 includes a second guide rail 371, a second guide block 372, and a self-locking cylinder 373. The second guide rail 371 is arranged on the machine base 1 along the longitudinal extension, the second guide block 372 is slidably connected to the second guide rail 371, the self-locking cylinder 373 is arranged on the machine base 1, the plug rod of the self-locking cylinder 373 is connected to the second guide block 372, and the tension roller 37 is rotatably connected to the second guide block 372 through a bearing. When it is necessary to adjust the tensioning force of the tension roller 37 on the film, the second guide block 372 is pulled by the self-locking cylinder 373 to move on the second guide rail 371 and locked at the required position, so that the tensioning force of the tension roller 37 on the film can be achieved. In another embodiment, the self-locking cylinder 373 can also be replaced by a tension spring. Under the action of the tension spring, the tensioning roller 37 can be flexibly pressed against the film, so that during the rotation of the positioning roller 381, the tensioning or relaxation of the film caused by the change in stroke can be compensated, thereby achieving the purpose of adjusting the tensioning force on the film.

[0045] In order to make the label on the film after labeling more reliably remain on the film, the film conveying device 3 also includes a pair of pressing rollers 35 arranged behind the positioning roller module 38 along the conveying direction of the film. The film output from the positioning roller module 38 passes through the gap between the pair of pressing rollers 35, so that the label can be reliably kept on the film, wherein one of the pair of pressing rollers 35 is an active pressing roller and the other is a driven pressing roller, and the active pressing roller can be driven by a servo motor. The rollers of the pair of pressing rollers 35 can be polyurethane pressing rollers with good resilience.

[0046] Embodiment 2:

[0047] refer to Figures 5 to 6 As shown, the structure of the film labeling equipment in this embodiment is basically the same as that in the first embodiment, and the difference between the two lies in the structure of the positioning roller module. The positioning roller module 48 in this embodiment includes a roller connector and a positioning roller 481 and a reversing roller 482 arranged on the roller connector, wherein the roller connector is a movable seat that can move in the horizontal direction, and the positioning roller 481 and the reversing roller 482 are rotatably connected to the movable seat through bearings. In the conveying direction of the film, the positioning roller 481 and the reversing roller 482 are between the two film conveying rollers 31, and the film is wrapped around the positioning roller 481 and the reversing roller 482 in an S shape, and a first film travel spacing is formed between the positioning roller 481 and the previous film conveying roller 31, and a second film travel spacing is formed between the reversing roller 482 and the next film conveying roller 31, and the films between the first film travel spacing and the second film travel spacing are arranged horizontally and in parallel. Specifically, a mounting groove is provided on the machine base 1, a guide rail 3 483 is provided in the mounting groove, the movable seat is connected to the guide rail 3 483, a guide column 485 is also provided in the mounting groove, and a guide hole matching the guide column 485 is provided on the movable seat.

[0048] In this embodiment, the linkage rod 4 is a fixed rod arranged between the moving seat and the label stripping plate 25. The label stripping plate 25 reciprocates between the label suction position and the avoidance position, driving the positioning roller 481 on the moving seat to reciprocate so as to be opposite or staggered with the label suction module 26, so that the process of aligning the positioning roller with the label head and the avoidance process of the label stripping plate 25 can be paralleled, and the time or stroke of delivering the label is saved, thereby improving the labeling efficiency of the film. Figure 6 As shown, during the movement of the movable seat, the walking distance of the first film increases and the walking distance of the second film decreases, and the increase of the former is equal to the decrease of the latter. Therefore, the length of the film between the two film conveying rollers 31 does not change, that is, the tensioning degree of this section of the film hardly changes. Therefore, there is no need to set the adjustable tensioning roller 37 described in Example 1 to adjust the tensioning force of the film, thereby saving some equipment costs.

[0049] Embodiment three:

[0050] This embodiment discloses a labeling method using the film labeling device in the first or second embodiment, which specifically includes the following steps:

[0051] S1, the pre-positioning step of the label paper and the film in their respective conveying directions; the pre-positioning step includes: S1-1, turning on the stepper motor 24, driving the label paper conveying roller 21 and the winding wheel 22 to operate, until the label paper is located in front of the peeling blade on the label peeling plate 25 in its conveying direction, for example, in front of the peeling blade at a distance of 0.5 to 1 label setting spacing △L1, △L1 can be set at 15 to 35mm. S1-2, turning on the servo motor, driving the film conveying roller 31 and the winding wheel 2 32 to operate, until the section to be labeled on the film is located in front of the positioning roller 381 in the film conveying direction, for example, in front of the positioning roller 381 at a distance of 0.5 to 1 section to be labeled setting spacing △L2, △L2 can be 25 to 105mm. S2, the height position and the header pressure adjustment step of the label suction module 26, that is, adjusting the height position H1 of the label suction module 26 from the label peeling plate 25 and the header pressure P1, H1 can be set to 1.5 ~ 3mm, P1 can be set to -0.4 ~ -0.7kg / cm 2 , at this time, the label on the label stripping plate 25 can be reliably sucked by the label head of the label suction module 26 after being peeled off. S3, the first rate setting step, that is, setting the starting time t0 and the moving rate V1 of the label stripping plate 25 moving between the label suction position and the avoidance position, V1 can be set at 6 to 20 m / min, and at the same time setting the film conveying rate V2, V2 can be set at 4 to 15 m / min, so that when the positioning roller (381, 481) is at the label suction position, the film on its roller can be in the section to be labeled in step S1. S4, the second rate setting step, that is, setting the moving rate V3 and the labeling pressure P2 of the label suction module 26 when labeling downward, V3 can be set at 5 to 20 mm / s, so that when the positioning roller (381, 481) is at the label suction position, the label adsorbed on the label head of the label suction module 26 can be attached to the section to be labeled of the film in S3. S5. According to the parameters set in the first rate setting step and the second rate setting step, the label suction module 26 is started and kept running in a cycle while driving the label paper conveying roller 21 and the film conveying roller 31 to operate until the labeling work on the film is completed.

[0052] Preferably, the linkage rod 4 is a telescopic rod with adjustable length, which is arranged between the movable base and the label peeling plate 25. The base 1 includes a fixed base and a movable base. The fixed base is provided with a lead screw, and the movable base is provided with a nut seat matching the four rods. The film conveying device 3 is arranged as a whole on the movable base, and the label supply device is arranged on the fixed base.

[0053] After each labeling operation of the label suction module 26 in step S5 is completed, a step of detecting whether the corresponding film section to be labeled is missing is added. For example, a label counter can be set at a position close to the positioning rollers (381, 481) on the machine base 1 to detect whether there is a missing label on the film section. If not, continue to step S5. If yes, perform the following steps:

[0054] S5-1. Close the film conveying roller 31 and the winding wheel 2 33, and move the label stripping plate 25 to the original avoidance position and fix it. At this time, the positioning roller (381, 481) returns to the original label suction position; S5-2. Adjust the length of the linkage rod 4. At this time, the positioning roller (381, 481) continues to move from the label suction position along the original direction until the unlabeled section of the film is repositioned in front of the positioning roller (381, 481) described in step S1. At this time, the position of the movable seat on the movable machine base is locked; S5-2. Turn the screw to move the movable machine base and the label stripping plate 25 in the opposite direction until the positioning roller (381, 481) is located at the label suction position again, and start the label suction module 26 to re-label to complete the label replenishment; S5-3. Set the position of the label stripping plate 25 at this time to a new avoidance position, unlock the movable seat and lock the position of the movable machine base, and continue to execute step S5. It should be noted that the positioning roller module here adopts the positioning roller module 48 in the second embodiment. The main function of the positioning roller module 48 here is to support the film. During the movement of the positioning roller module 48, the walking distance of the first film gradually increases, but because the film conveying roller 31 and the winding wheel 2 33 are closed, that is, the film does not move, the positioning roller will move to the lower part of the previous labeling section of the film, that is, the missing label section, to support the film of the missing label section. Compared with the traditional solution, the above-mentioned labeling method does not need to repeatedly adjust the tension of the film, which can effectively prevent the thin film from being stretched and deformed during the labeling process, thereby ensuring the quality of the labeling film. Preferably, the above-mentioned screw rod can be dragged by a servo motor.

[0055] In summary, in the above embodiment, the process of the label stripping plate 25 moving toward the avoidance label suction module 26 and the alignment process of the label suction module 26 and the positioning roller 381 are performed synchronously, and when the label suction module 26 is in the avoidance position, the positioning roller 381 is just located at the label suction position, and at this time, the label suction module 26 can directly implement the labeling action on the film to be labeled on the positioning roller 381. The label delivery process is omitted, and the labeling alignment process is parallel to the avoidance process of the label stripping plate 25, thereby effectively improving the efficiency of film labeling.

[0056] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A film labeling device, comprising a machine base, a label supply device and a film conveying device; wherein the label supply device comprises a label stripping plate and a label suction module; the label stripping plate is arranged on the machine base in a manner that it can move between a label suction position and an avoidance position; the label suction module is located above the label stripping plate; at the label suction position, the stripped label on the label stripping plate is opposite to the label suction module, and at the avoidance position, the label stripping plate and the label suction module are staggered, characterized in that: The film conveying device comprises a film conveying roller and a positioning roller module, wherein the positioning roller module comprises a roller connecting member and a positioning roller rotatably arranged on the roller connecting member, the film on the film conveying roller passes through the positioning roller and is supported on the roller, a linkage rod is arranged between the roller connecting member and the label peeling plate, and the linkage rod is configured to drive the positioning roller and the label peeling plate to generate linkage, so that when the label peeling plate is in the avoidance position, the positioning roller is located at the label suction position, and when the label peeling plate is in the label suction position, the positioning roller and the label suction module are staggered; The roller connecting member is a movable seat that can move in the horizontal direction, the positioning roller is rotatably connected to the movable seat, and a reversing roller is rotatably arranged on the movable seat. In the conveying direction of the film, the positioning roller and the adjusting roller are between the two film conveying rollers, and the film is wrapped around the positioning roller and the adjusting roller in an S shape, and a first film travel spacing is formed between the positioning roller and the previous film conveying roller, and a second film travel spacing is formed between the adjusting roller and the next film conveying roller, and the films between the first film travel spacing and the second film travel spacing are arranged horizontally and in parallel.

2. The film labeling device according to claim 1, characterized in that: The machine base is provided with a guide rail extending in the transverse direction, the guide rail is provided with a guide block matching with the guide rail, the label peeling plate is provided on the guide block, and the machine base is also provided with a cylinder, the plug rod of the cylinder is connected with the guide block.

3. The film labeling equipment according to claim 1, characterized in that: The label suction module comprises a mounting seat, a second cylinder and a negative pressure label suction head. The mounting seat is connected to the machine base. The second cylinder can be telescopically arranged on the mounting seat in the longitudinal direction. The label suction head is connected to the plug rod of the second cylinder.

4. The film labeling device according to claim 2 or 3, characterized in that: The roller connecting member is a pair of rotating arms connected to the machine base through a rotating shaft, the positioning roller is connected between the pair of rotating arms, one end of the linkage rod is connected to the label peeling plate through a hinge, and the other end is connected to the rotating arm through a hinge.

5. The film labeling device according to claim 4, characterized in that: The film conveying device further comprises a tensioning roller, which is connected to the machine base in an adjustable position, and the film passes through the tensioning roller and at least a part of the film is wrapped around the tensioning roller.

6. The film labeling device according to claim 4, characterized in that: The base is also provided with a limiting sleeve for limiting the rotation angle of the rotating arm, and a torsion spring is provided between the limiting sleeve and the rotating arm.

7. The film labeling equipment according to claim 1, characterized in that: The film conveying device further comprises a pair of pressing rollers arranged behind the positioning roller module along the conveying direction of the film, and the film output from the positioning roller module passes through the gap between the pair of pressing rollers.

8. A labeling method using the film labeling device as claimed in claim 7, characterized in that: The steps include: S1, a pre-positioning step of the label paper and the film in their respective conveying directions; the pre-positioning step comprises: S1-1, driving the label paper conveying roller to operate until the label paper is located in front of the peeling blade on the label peeling plate in its conveying direction; S1-2, driving the film conveying roller to operate until the section to be labeled on the film is located in front of the positioning roller in the film conveying direction; S2, a step of adjusting the height position and the pressure of the label head of the label suction module, i.e. adjusting the height position of the label suction module from the label stripping plate and the pressure of the label head so that the label on the label stripping plate can be sucked by the label head of the label suction module after being stripped; S3, a first rate setting step, i.e. setting the starting time and moving rate of the label peeling plate between the label suction position and the avoidance position, and setting the conveying rate of the film at the same time, so that when the positioning roller is at the label suction position, the film on its roller can be in the section to be labeled in step S1; S4, a second rate setting step, i.e. setting the moving rate and labeling pressure of the label suction module when labeling downward, so that when the positioning roller is at the label suction position, the label absorbed by the label head of the label suction module can be attached to the section of the film to be labeled in S3; S5. According to the parameters set in the first rate setting step and the second rate setting step, the label suction module is started and kept running in a cycle while driving the label paper conveying roller and the film conveying roller to operate until the labeling work on the film is completed.

9. The labeling method according to claim 8, characterized in that: The linkage rod is a telescopic rod arranged between the movable base and the label peeling plate. The base includes a fixed base and a movable base. The movable base is movably arranged on the fixed base. The film conveying device is arranged on the movable base. The label supply device is arranged on the fixed base.

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