Label film rapid cutting mechanism of labeling machine

Abstract

The invention relates to the technical field of cutting mechanisms, and provides a rapid cutting mechanism for a label film of a labeling machine aiming at the problem that the cutting efficiency of the label film of a traditional labeling machine is low, the rapid cutting mechanism for the label film of the labeling machine comprises a rack, and a cutter shaft and a cutter pad shaft are rotationally connected to the rack; rotating shafts of the cutter shaft and the cutter pad shaft are axially parallel to each other; a forming cutter is arranged on the periphery of the cutter shaft, the edge portion of the forming cutter is arranged in the direction away from the axis of the cutter shaft, and the edge portion of the forming cutter is in a sawtooth shape. The periphery of the cutter pad shaft is provided with a cutter pad block corresponding to the forming cutter, and the cutter pad block is used for abutting against and being matched with the forming cutter; the rack is further provided with a driving assembly used for driving the cutter shaft and the cutter pad shaft to rotate relatively. The label film cutting device has the effect of improving the label film cutting efficiency of the labeling machine.

Description

Technical Field

[0001] The present application relates to the field of cutting mechanisms, and in particular to a label film fast cutting mechanism for a sleeve labeling machine. Background Art

[0002] The label sleeve machine is used to sleeve label film onto the outer periphery of a specific product. It is an important equipment for completing the packaging process in industries such as food, beverages and pharmaceuticals.

[0003] In the related art, when the sleeve labeling machine is in operation, the traction mechanism of the center guide post pulls the rolled label film onto the center guide post, and the label film is stretched out by the center guide post; when the product to be packaged is moved to the sleeve labeling station, the cutting mechanism arranged on the center guide post cuts the label film in a circumferential direction, and the sleeve labeling mechanism at the end of the center guide post pulls the cut label film and sleeves it onto the product, thereby realizing the product sleeve labeling operation.

[0004] At present, the cutting mechanism of the label sleeve machine includes a knife disc mounted on the outer periphery of the central guide column, and the knife disc can be rotated around the central guide column by a driving member; a plurality of cutters are arranged circumferentially on the knife disc, and the cutters can be driven by a servo motor installed on the knife disc to swing toward or away from the central guide column. When the cutting mechanism cuts the label film, the servo motor drives the corresponding cutter to press against the surface of the label film mounted on the central guide column, and then the driving member drives the knife disc to rotate, so that the label film is rotary cut by using the plurality of cutters.

[0005] With regard to the above-mentioned related technologies, when the cutting mechanism of the existing sleeve labeling machine is cutting the label film, the traction mechanism of the sleeve labeling machine needs to stop traction on the label film; and after the cutting mechanism completes a single film cutting operation, the servo motor needs to first drive the corresponding forming cutter to swing and reset, and after the traction mechanism continues to transfer the subsequent label film to the cutting mechanism, the servo motor drives the corresponding cutter to swing again and abut against the surface of the label film, and then perform the cutting operation; the overall operation is relatively cumbersome, and the efficiency of label film cutting is low; at the same time, when any cutter on the cutter disc is worn, it is also very easy to affect the cutting quality of the label film. Therefore, there is room for improvement. Summary of the invention

[0006] In order to improve the cutting efficiency of label film by a sleeve labeling machine, the present application provides a label film fast cutting mechanism for a sleeve labeling machine.

[0007] The present application provides a label film fast cutting mechanism for a sleeve labeling machine, which adopts the following technical solution: A label film rapid cutting mechanism for a sleeve labeling machine comprises a frame, on which a cutter shaft and a knife pad shaft are rotatably connected; the rotary axes of the cutter shaft and the knife pad shaft are axially arranged in parallel; a forming cutter is arranged on the outer periphery of the cutter shaft, the blade of the forming cutter is arranged away from the axial direction of the cutter shaft, and the blade of the forming cutter is serrated; a knife pad block is arranged on the outer periphery of the knife pad shaft corresponding to the forming cutter, and the knife pad block is used to abut and cooperate with the forming cutter; the frame is also provided with a driving component for driving the cutter shaft and the knife pad shaft to rotate relative to each other.

[0008] By adopting the above technical solution, the label film before entering the central guide column is transferred to the gap between the cutter shaft and the knife pad shaft, and the cutter shaft and the knife pad shaft are driven to rotate by the driving assembly. When the cutter shaft and the knife pad shaft rotate until the forming cutter blade abuts against the corresponding knife pad block, the forming cutter and the knife pad block cooperate to form an easy-tear line on the label film, thereby pre-cutting the label film. During the cutting process, the traction mechanism of the sleeve labeling machine can continuously and uninterruptedly pull the label film with the easy-tear line to continue to move toward the central guide column, so as to use the central guide column to stretch the label film. When the product to be packaged moves to the sleeve labeling station, the sleeve labeling mechanism at the end of the central guide column of the sleeve labeling machine pulls off the two adjacent label films through the easy-tear line and sleeves the label film to the periphery of the product. Compared with the existing cutting mechanism of the sleeve labeling machine, the cutting mechanism can cooperate with the normal traction of the label film by the traction mechanism of the sleeve labeling machine to achieve continuous cutting of the label film, and there is no need to frequently control the swing of the cutter by the servo motor, which effectively improves the cutting efficiency of the sleeve labeling machine for the label film.

[0009] Preferably, the driving assembly includes a main gear, a sub-gear and a rotary driving member, the main gear and the sub-gear are coaxially connected to the cutter shaft and the knife pad shaft respectively, and the main gear and the sub-gear are meshingly arranged; the rotary driving member is drivingly connected to the cutter shaft for driving the cutter shaft to rotate.

[0010] By adopting the above technical solution, in the subsequent process of driving the cutter shaft to rotate by the rotary drive member, the cutter shaft drives the knife pad shaft to rotate relatively through the cooperation between the main gear and the auxiliary gear, so as to form a ring-shaped tear line on the label film through the abutment cooperation between the forming cutter and the knife pad block.

[0011] Preferably, a first connecting seat is convexly provided on the outer circumference of the cutter shaft corresponding to the forming cutter, and a first connecting groove is formed on the side of the first connecting seat away from the axial direction of the cutter shaft, the forming cutter is embedded in the first connecting groove, and the blade of the forming cutter extends out of the notch of the first connecting groove; a limiting member is also provided on the first connecting seat, and the limiting member is used to limit the forming cutter from detaching from the first connecting groove.

[0012] By adopting the above technical solution, the forming cutter can be stably mounted on the cutter shaft. At the same time, the forming cutter can be detachably connected to the cutter shaft, which is convenient for subsequent disassembly, assembly and replacement of the forming cutter after it is worn.

[0013] Preferably, both ends of the forming cutter are provided with protrusions; the limiting member includes two limiting blocks, which are respectively located at both ends of the first connecting groove, and the limiting blocks are connected to the first connecting groove through limiting bolts. The limiting block has a limiting protrusion on one side facing the protrusion, and the limiting protrusion abuts against the side of the protrusion away from the axial direction of the cutter shaft.

[0014] By adopting the above technical solution, two limiting protrusions are used to limit the protrusions at both ends of the forming cutter respectively, so as to prevent the forming cutter from detaching from the first connecting groove during the subsequent rotation of the cutter shaft, which is conducive to more firmly installing the forming cutter in the first connecting groove.

[0015] Preferably, a flexible buffer pad is laid on one side of the first connecting groove facing the axial direction of the cutter shaft, and the forming cutter abuts against the flexible buffer pad.

[0016] By adopting the above technical solution and setting a flexible buffer pad, when the cutter shaft and the knife pad shaft rotate relative to each other until the forming cutter blade abuts against the knife pad block, the cutter shaft can be retracted into the first connecting groove to a certain distance through the flexible buffer pad in the first connecting groove, and the impact of the flexible buffer knife pad on the forming cutter blade is reduced, thereby reducing the situation in which the forming cutter blade is easily damaged due to direct rigid contact between the forming cutter and the knife pad, which is beneficial to extending the service life of the forming cutter.

[0017] Preferably, a fixing member for fixing the forming cutter is also provided on the first connecting seat; a mounting groove is provided on one side wall of the first connecting groove, and the fixing member includes a plurality of fixed airbags installed in the mounting groove, and the plurality of fixed airbags are connected to the air source.

[0018] By adopting the above technical scheme, during the rotation of the cutter shaft, compressed air is continuously filled into the fixed airbag through the air source to expand the fixed airbag, and the formed cutter is fixed tightly in the first connecting groove by using the expanded fixed airbag. On the one hand, it is beneficial to limit the shaking displacement of the formed cutter during the subsequent rotation of the cutter shaft and the abutment and cooperation between the formed cutter and the knife pad; at the same time, during the abutment and cooperation between the formed cutter and the knife pad, the formed cutter can overcome the friction between the fixed airbag and the fixed airbag and retract a certain distance into the first connecting groove through the flexible buffer pad to buffer the impact of the knife pad on the formed cutter; on the other hand, the fixed airbag can be used to absorb and disperse the load acting on the first connecting seat after the formed cutter is subjected to force, which is beneficial to reduce the deformation of the formed cutter and the first connecting groove under force.

[0019] Preferably, a wear-resistant sheet is further provided in the first connecting groove, and the wear-resistant sheet is connected to one side wall of the first connecting groove; the wear-resistant sheet and the mounting groove are respectively located on the opposite side walls of the first connecting groove, and the wear-resistant sheet is arranged in contact with the forming cutter.

[0020] By adopting the above technical solution, in the process of subsequent forming cutter abutting and cooperating with the corresponding knife pad and retracting into the first connecting groove through the buffer pad, the wear-resistant sheet can be used to limit the direct contact between the forming cutter and the wall of the first connecting groove, which is beneficial to reduce the wear between the wall of the first connecting groove and the forming cutter.

[0021] Preferably, the knife pad shaft is formed with a second connecting seat corresponding to the knife pad block, and the second connecting seat has a second connecting groove starting from the side away from the axial direction of the knife pad shaft, the knife pad block is embedded in the second connecting groove, and the top of the knife pad block extends out of the notch of the second connecting groove, and the knife pad block is fixed in the second connecting groove by a plurality of fastening bolts.

[0022] By adopting the above technical solution, the knife pad block can be detachably installed on the knife pad shaft, which is convenient for subsequent disassembly, assembly and replacement when the knife pad block is damaged.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. Insert the label before entering the center guide column into the gap between the cutter shaft and the knife pad shaft, and drive the cutter shaft and the knife pad shaft to rotate relative to each other through the driving component. When the cutter shaft and the knife pad shaft rotate until the forming cutter blade abuts against the knife pad block, the forming cutter and the knife pad block cooperate to form a ring-shaped tear line on the label. When the subsequent labeling machine puts labels on the product, the labeling mechanism on the labeling machine only needs to pull the adjacent label films through the tear line between the adjacent label films and put them into the corresponding product periphery; the cutting mechanism can cooperate with the traction mechanism of the labeling machine to traction and transmit the label film, so as to realize continuous cutting of the label film, which effectively improves the cutting efficiency of the labeling machine.

[0024] 2. By setting a flexible buffer pad in the first connecting groove, during the subsequent abutment and cooperation between the forming cutter and the knife pad, the forming cutter can be retreated a certain distance into the first connecting groove through the flexible buffer pad, and the impact of the knife pad on the forming cutter is buffered by the flexible buffer pad, thereby reducing the direct rigid contact between the forming cutter and the knife pad, which may cause the edge of the forming cutter to be easily damaged.

[0025] 3. By arranging a fixed airbag in the first connecting groove, injecting gas into the fixed airbag to expand the fixed airbag, and then using the expanded fixed airbag to fix the forming cutter tightly in the connecting groove, the subsequent forming cutter and the knife pad can be limited from sliding and shaking between the two groove walls relative to each other in the first connecting groove. At the same time, the forming cutter can overcome the friction between itself and the fixed airbag, and shrink into the first connecting groove through the flexible buffer pad, thereby effectively buffering the impact of the knife pad on the forming cutter. At the same time, the fixed airbag can be used to absorb and disperse the load of the forming cutter on the first connecting seat, which is beneficial to reduce the stress and deformation of both the forming cutter and the first connecting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the cutting mechanism used to illustrate the embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the embodiment of the present application used to illustrate the state when the cutter shaft and the knife pad shaft rotate relative to each other.

[0028] Figure 3 It is a schematic diagram of the structure of the cutter shaft used to illustrate the embodiment of the present application.

[0029] Figure 4 yes Figure 3 Enlarged schematic diagram of part A in the middle.

[0030] Figure 5 yes Figure 3 Enlarged schematic diagram of part B in the middle.

[0031] Figure 6 It is a schematic diagram of the structure of the fixing member used to illustrate the embodiment of the present application.

[0032] Figure 7 It is a schematic diagram of the structure of the knife pad shaft used to illustrate the embodiment of the present application.

[0033] Figure 8 yes Figure 7 Enlarged schematic diagram of part C in the middle.

[0034] Description of reference numerals: 1. Frame; 10. Support block; 2. Cutter shaft; 20. First connecting seat; 200. Wear-resistant sheet; 201. First connecting groove; 202. Limit block; 203. Limit protrusion; 204. Flexible buffer pad; 21. Forming cutter; 210. Protrusion; 211. Cutter seat; 2111. Step groove; 212. Blade; 22. Fixing piece; 220. Fixing seat; 221. Fixed airbag; 222. Connecting block; 23. Main air inlet hole; 24. Air inlet branch hole; 25. Connecting auxiliary hole; 26. Air supply hole; 27. Air inlet; 3. Cutter pad shaft; 30. Second connecting seat; 301. Second connecting groove; 31. Cutter pad block; 311. V-shaped clamping groove; 32. Fastening bolt; 4. Drive assembly; 41. Main gear; 42. Auxiliary gear; 43. Rotary drive member; 5. Pneumatic rotary joint. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-8 This application is described in further detail.

[0036] The present application embodiment discloses a label film fast cutting mechanism for a sleeve labeling machine, referring to Figure 1 and Figure 2 , including a frame 1, a cutter shaft 2 and a knife pad shaft 3 are rotatably connected to the frame 1, a forming cutter 21 is convexly provided on the outer periphery of the cutter shaft 2, the blade of the forming cutter 21 is arranged away from the cutter shaft 2, and a plurality of notches are provided on the blade of the forming cutter 21 to form a serrated edge; a knife pad block 31 is convexly provided on the knife pad shaft 3 corresponding to the forming cutter 21; the knife pad block 31 is used to abut against the forming cutter 21. A driving component 4 for driving the cutter shaft 2 and the knife pad shaft 3 to rotate relative to each other is also provided on the frame 1.

[0037] After the label film before entering the central guide column of the sleeve labeling machine is passed into the gap between the cutter shaft 2 and the knife pad shaft 3, the drive component 4 drives the cutter shaft 2 and the knife pad shaft 3 to rotate relative to each other. When the cutter shaft 2 and the knife pad shaft 3 rotate until the forming cutter 21 abuts against the knife pad block 31, the forming cutter 21 and the knife pad block 31 cooperate to form an easy-tear line on the label film to complete the pre-cutting process of the label film. Subsequently, the sleeve labeling mechanism of the sleeve labeling machine pulls the label film apart through the easy-tear line of the adjacent label film and sleeves it onto the corresponding product.

[0038] The frame 1 includes two supporting blocks 10 arranged opposite to each other; the cutter shaft 2 and the knife pad shaft 3 are located between the two supporting blocks 10; both ends of the cutter shaft 2 and the knife pad shaft 3 are rotatably penetrated through the two supporting blocks 10 through bearings.

[0039] Reference Figure 1The driving assembly 4 includes a main gear 41, a sub-gear 42 and a rotary driving member 43; the main gear 41 is coaxially connected to the end of the cutter shaft 2, and the sub-gear 42 is coaxially connected to the end of the knife pad shaft 3, and the main gear 41 and the sub-gear 42 are meshed. The rotary driving member 43 includes a reduction motor installed on the frame 1, and the output end of the reduction motor is connected to the cutter shaft 2 through a synchronous pulley structure, which is used to drive the cutter shaft 2 to rotate.

[0040] Subsequently, the reduction motor drives the cutter shaft 2 to rotate through the synchronous pulley, and the cutter shaft 2 drives the knife pad shaft 3 to rotate relatively through the cooperation between the main gear 41 and the auxiliary gear 42. When the forming cutter 21 on the cutter shaft 2 abuts and cooperates with the knife pad block 31 on the knife pad shaft 3, an easy-tear line can be formed on the label film.

[0041] In this embodiment, the forming cutters 21 are arranged at four locations, and the knife pads 31 are arranged at two locations. Afterwards, each rotation of the cutter shaft 2 can complete the cutting and forming of four easy-tear lines, which is beneficial to further improve the cutting efficiency of the label film.

[0042] Reference Figure 3 and Figure 4 Four first connection seats 20 are convexly provided on the outer circumference of the cutter shaft 2 corresponding to four forming cutters 21; the first connection seats 20 are concavely provided with first connection grooves 201 on the side facing away from the cutter shaft 2, and the forming cutters 21 are embedded in the corresponding first connection grooves 201. The blades 212 of the forming cutters 21 are all extended out of the notches of the first connection grooves 201, and the first connection grooves 201 are also provided with a limiting member for limiting the separation of the forming cutter 21.

[0043] The forming cutter 21 comprises a knife seat 211 and a blade 212. A step groove 2111 is provided on one side of the knife seat 211. The blade 212 is embedded in the step groove 2111 and the cutting edge of the blade 212 protrudes from the top of the knife seat 211. Both ends of the blade are provided with protruding blocks 210. The limiting component includes two limiting blocks 202, which are respectively located at two ends of the first connecting groove 201, and the limiting blocks 202 are fixed in the first connecting groove 201 by limiting bolts; the limiting blocks 202 are provided with limiting protrusions 203 on one side of the blade 212 of the forming cutter 21, and the limiting protrusions 203 extend to the side of the protrusion 210 away from the axial direction of the cutter shaft 2 and abut against the protrusion 210; the limiting protrusions 203 on the two limiting blocks 202 are used to limit the blade 212 and the knife seat 211 to prevent the blade 212 and the knife seat 211 from being separated from the knife seat; at the same time, after the blade 212 is worn out, it is convenient to remove and replace the blade 212 separately.

[0044] Reference Figure 3 and Figure 5, a flexible buffer pad 204 is fully provided on the groove wall of the first connecting groove 201 on the side facing the axis direction of the cutter shaft 2. In this embodiment, the flexible buffer pad 204 is a rubber pad, and the flexible buffer pad 204 is fixed to the groove wall at the bottom of the first connecting groove 201 by glue. The knife seat 211 of the forming cutter 21 abuts on the flexible buffer pad 204 on the side facing the axis direction of the cutter shaft 2. Through the setting of the flexible buffer pad 204, when the cutter shaft 2 and the knife pad shaft 3 rotate relatively to make the forming cutter 21 abut against the knife pad block 31, the forming cutter 21 can be retracted to a certain distance in the first connecting groove 201 through the flexible buffer pad 204 after being subjected to force, and the impact of the knife pad block 31 on the forming cutter 21 can be effectively buffered by the flexible buffer pad 204, so as to reduce the situation that the cutting edge of the forming cutter 21 is easily damaged due to the direct rigid contact between the forming cutter 21 and the knife pad block 31.

[0045] Reference Figure 5 and Figure 6 , a fixing member 22 for fixing the forming cutter 21 is also provided in the first connecting groove 201. The fixing member 22 includes a fixing seat 220 and a plurality of fixing airbags 221; the fixing seat 220 is located outside the connecting seat and is connected to the cutter shaft 2 by fixing bolts; a mounting groove is provided on one side of the groove wall of the first connecting groove 201, and the mounting groove is arranged toward the side of the cutter seat 211 away from the blade 212; a plurality of fixing airbags 221 are all installed in the mounting groove, and a connecting block 222 is connected to the side of the fixing airbags 221 away from the notch of the mounting groove; a plurality of positioning bolts are provided on the fixing seat 220 corresponding to the plurality of fixing airbags 221, and the positioning bolts are passed through the fixing seat 220 and the first connecting seat 20 and are threadedly connected to the connecting blocks 222 corresponding to the fixing airbags 221, so as to realize that the plurality of fixing airbags 221 are firmly positioned in the mounting groove, so as to limit the subsequent fixed airbags 221 from slipping in the mounting groove.

[0046] Reference Figure 3 and Figure 5 The connecting block 222 is provided with an air inlet 27 which is in communication with the inner cavity of the fixed airbag 221. The fixing seat 220 is provided with a plurality of air supply holes 26 corresponding to the connecting blocks 222, and the plurality of air supply holes 26 are all in communication with the air inlet holes of the corresponding connecting blocks 222.

[0047] A main air inlet hole 23 is provided at one end of the cutter shaft 2. The main air inlet hole 23 is connected to a plurality of air inlet branch holes 24 corresponding to a plurality of fixed seats 220. The air inlet branch holes 24 are connected to a plurality of connecting auxiliary holes 25 corresponding to a plurality of air supply holes 26 of the fixed seats 220. The connecting auxiliary holes 25 are all connected to the corresponding air supply holes 26. In this embodiment, the main air inlet hole 23, the air inlet branch holes 24 and the connecting auxiliary holes 25 can all be machined and formed. A pneumatic rotary joint 5 is installed at one end of the cutter shaft 2 where the main air inlet hole 23 is provided. The rotating end of the pneumatic rotary joint 5 is coaxially connected to the end of the cutter shaft 2 and is connected to the main air inlet hole 23. The fixed end of the pneumatic rotary joint 5 is connected to the air source.

[0048] During the subsequent rotation of the cutter shaft 2, the air source cooperates with the pneumatic rotary joint 5 to input compressed air into the fixed airbags 221 at various locations on the cutter groove to expand the fixed airbags 221, and the expanded fixed airbags 221 are used to tightly fix the forming cutter 21 in the first connecting groove 201. On the one hand, the forming cutter 21 in the first connecting groove 201 can be prevented from slipping and shaking during the rotation of the cutter shaft 2, which is conducive to better installation and fixing of the forming cutter 21 in the first connecting groove 201; at the same time, the fixed airbags 221 are used to limit and fix the forming cutter 21. In the process of the forming cutter 21 abutting against the knife pad shaft 3, the forming cutter 21 can overcome the friction between the fixed airbag 221 and retract into the first connecting groove 201 for a certain distance through the flexible buffer pad 204, so as to buffer the impact of the knife pad block 31 on the forming cutter 21 through the flexible buffer pad; on the other hand, in the process of the forming cutter 21 abutting against the knife pad shaft 3, the fixed airbag 221 can absorb and disperse the load of the forming cutter 21 on the first connecting seat 20, which is beneficial to reduce the deformation of both the forming cutter 21 and the first connecting seat 20.

[0049] In actual use, the connection between the air inlet 27 and the air supply hole 26 and the connection between the air supply hole 26 and the auxiliary connection hole 25 can be connected by inserting an adapted plastic tube to facilitate better flow of compressed air.

[0050] A wear-resistant sheet 200 is also provided in the first connecting groove 201. In the present embodiment, the wear-resistant sheet 200 is made of a PVC plastic plate. The wear-resistant sheet 200 is fixed to the groove wall on one side of the first connecting groove 201 by a plurality of countersunk bolts. The wear-resistant sheet 200 and the mounting groove are respectively located on the groove walls on the opposite sides of the first connecting groove 201, and the wear-resistant sheet 200 is arranged in contact with the blade 212 of the forming cutter 21. The wear-resistant sheet 200 limits the direct contact between the forming cutter 21 and the groove wall of the first connecting groove 201, which helps to reduce the situation in which the forming cutter 21 and the groove wall of the first connecting groove 201 are easily worn when the subsequent forming cutter 21 is displaced in the first connecting groove 201 through the flexible buffer pad 204.

[0051] Reference Figure 7 and Figure 8 Two second connecting seats 30 are convexly provided on the knife pad shaft 3 corresponding to the two knife pad blocks 31. A second connecting groove 301 is opened on the side of the second connecting seat 30 away from the axial direction of the knife pad shaft 3. The knife pad block 31 is embedded in the second connecting seat 30, and the top of the knife pad block 31 extends out of the notch of the second connecting groove 301.

[0052] A V-shaped snap-in groove 311 is provided on the side of the knife pad block 31, and a plurality of fastening bolts 32 are passed through the V-shaped snap-in groove 311 on the side of the second connecting seat 30 away from the axial direction of the knife pad shaft 3. The fastening bolts 32 extend into the second connecting seat 30 and press against the V-shaped snap-in groove 311 on the side of the knife pad block 31, so that the knife pad block 31 is firmly installed in the second connecting groove 301. At the same time, when the knife pad block 31 is worn out subsequently, the fastening bolts 32 can be unscrewed from the second connecting seat 30, so that the knife pad block 31 can be removed from the second connecting seat 30 and replaced, making the disassembly and assembly of the knife pad block 31 simpler and more convenient.

[0053] The second connecting seat 30 is provided with a plurality of countersunk holes corresponding to the plurality of fastening bolts 32 on the side away from the axial direction of the knife pad shaft 3. The nuts of the fastening bolts 32 are all embedded in the corresponding countersunk holes to limit the nuts of the fastening bolts 32 from protruding from the surface of the second connecting seat 30, thereby reducing the situation where the subsequent fastening bolts 32 interfere with the relative rotation of the cutter shaft 2 and the knife pad shaft 3.

[0054] The implementation principle of the embodiment of the present application is to insert the label film before entering the central guide column of the labeling machine into the gap between the cutter shaft 2 and the knife pad shaft 3; subsequently, the drive component 4 is used to drive the cutter shaft 2 and the knife pad shaft 3 to rotate relative to each other. When the cutter shaft 2 and the knife pad shaft 3 rotate relative to each other until the forming cutter 21 and the knife pad block 31 abut against each other, the forming cutter 21 and the knife pad block 31 cooperate to form an easy-tear line on the label film to achieve pre-cutting of the label film. When the labeling machine subsequently puts on the label, the labeling mechanism on the labeling machine pulls off the adjacent label films through the easy-tear line, and puts the pulled label films on the periphery of the product to complete the product labeling operation.

[0055] The cutting mechanism of the present application can cooperate with the traction mechanism of the sleeve labeling machine to traction and convey the label film to achieve continuous cutting of the label film. The cutting of the label film by the cutting mechanism and the traction and conveying of the label film by the traction mechanism of the sleeve labeling machine do not interfere with each other, which effectively improves the cutting efficiency of the label film by the sleeve labeling machine.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A label film fast cutting mechanism for a sleeve labeling machine, characterized by: The invention comprises a frame (1), on which a cutter shaft (2) and a knife pad shaft (3) are rotatably connected; the rotary axes of the cutter shaft (2) and the knife pad shaft (3) are axially arranged parallel to each other; a forming cutter (21) is arranged on the outer periphery of the cutter shaft (2), the blade of the forming cutter (21) is arranged away from the axial direction of the cutter shaft (2), and the blade of the forming cutter (21) is sawtooth-shaped; a knife pad block (31) is arranged on the outer periphery of the knife pad shaft (3) corresponding to the forming cutter (21), and the knife pad block (31) is used to abut and cooperate with the forming cutter (21); and a driving component (4) is also arranged on the frame (1) for driving the cutter shaft (2) and the knife pad shaft (3) to rotate relative to each other.

2. The label film rapid cutting mechanism of a sleeve labeling machine according to claim 1, characterized in that: The driving assembly (4) comprises a main gear (41), a sub-gear (42) and a rotary driving member (43); the main gear (41) and the sub-gear (42) are coaxially connected to the cutter shaft (2) and the knife pad shaft (3), respectively, and the main gear (41) and the sub-gear (42) are meshingly arranged; the rotary driving member (43) is drivingly connected to the cutter shaft (2) for driving the cutter shaft (2) to rotate.

3. The label film rapid cutting mechanism of a sleeve labeling machine according to claim 1, characterized in that: A first connecting seat (20) is protrudingly provided on the outer circumference of the cutter shaft (2) corresponding to the shaped cutter (21); a first connecting groove (201) is formed on the side of the first connecting seat (20) away from the axial direction of the cutter shaft (2); the shaped cutter (21) is embedded in the first connecting groove (201), and the blade of the shaped cutter (21) extends out of the notch of the first connecting groove (201); a limiting member is also provided on the first connecting seat (20), and the limiting member is used to limit the shaped cutter (21) from leaving the first connecting groove (201).

4. The label film rapid cutting mechanism of a sleeve labeling machine according to claim 3, characterized in that: Both ends of the forming cutter (21) are provided with protrusions (210); the limiting member comprises two limiting blocks (202), the two limiting blocks (202) are respectively located at the two ends of the first connecting groove (201), the limiting blocks (202) are connected to the first connecting groove (201) through limiting bolts, and the limiting block (202) is provided with a limiting protrusion (203) on the side facing the protrusion (210), and the limiting protrusion (203) abuts against the side of the protrusion (210) away from the axial direction of the cutter shaft (2).

5. The label film rapid cutting mechanism of a sleeve labeling machine according to claim 4, characterized in that: A flexible buffer pad (204) is provided on one side of the first connection groove (201) facing the axis direction of the cutter shaft (2), and the forming cutter (21) abuts against the flexible buffer pad (204).

6. The label film rapid cutting mechanism of a sleeve labeling machine according to claim 5, characterized in that: The first connecting seat (20) is also provided with a fixing member (22) for fixing the forming cutter (21); a groove wall on one side of the first connecting groove (201) is provided with a mounting groove, and the fixing member (22) includes a plurality of fixing air bags (221) installed in the mounting groove, and the plurality of fixing air bags (221) are all connected to an air source.

7. The label film rapid cutting mechanism of a sleeve labeling machine according to claim 6, characterized in that: A wear-resistant sheet (200) is also provided in the first connecting groove (201), and the wear-resistant sheet (200) is connected to a groove wall on one side of the first connecting groove (201); the wear-resistant sheet (200) and the mounting groove are respectively located on groove walls on two opposite sides of the first connecting groove (201), and the wear-resistant sheet (200) is arranged in contact with the forming cutter (21).

8. The label film rapid cutting mechanism of a sleeve labeling machine according to claim 1, characterized in that: The knife pad shaft (3) is formed with a second connecting seat (30) corresponding to the knife pad block (31); the second connecting seat (30) has a second connecting groove (301) starting from the side away from the axial direction of the knife pad shaft (3); the knife pad block (31) is embedded in the second connecting groove (301), and the top of the knife pad block (31) extends out of the groove of the second connecting groove (301); the knife pad block (31) is fixed in the second connecting groove (301) by a plurality of fastening bolts (32).

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