A label film fast cutting mechanism for a sleeve labeling machine

Abstract

The present application relates to the technical field of cutting mechanisms. To address the low efficiency of label film cutting in conventional sleeve labeling machines, a rapid label film cutting mechanism for sleeve labeling machines is proposed, comprising a frame to 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 parallel; a forming cutter is disposed on the outer periphery of the cutter shaft, the cutting edge of the forming cutter being arranged away from the axis of the cutter shaft and having a serrated edge; a knife pad is disposed on the outer periphery of the knife pad shaft corresponding to the forming cutter, the knife pad being configured to abut against the forming cutter; and a drive assembly is further provided on the frame for driving the cutter shaft and the knife pad shaft to rotate relative to each other. The present application improves the efficiency of label film cutting in sleeve labeling machines.

Description

Technical Field

[0001] The present application relates to the field of cutting mechanisms, and in particular to a quick cutting mechanism for label films of 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, beverage and pharmaceuticals.

[0003] In the related art, when the labeling machine is running, the traction mechanism of the center guide column pulls the rolled label film onto the center guide column, and the label film is stretched out by the center guide column; when the product to be packaged moves to the labeling station, the cutting mechanism set on the center guide column cuts the label film in a circumferential direction, and the labeling mechanism at the end of the center guide column pulls the cut label film and puts it onto the product to realize the product labeling operation.

[0004] The cutting mechanism of current labeling machines consists of a blade disc mounted on the periphery of a central guide post, which can be rotated around the post by a drive unit. Several cutters are arranged circumferentially on the disc, and the cutters are driven by a servo motor mounted on the disc to swing toward or away from the central guide post. When cutting the label film, the servo motor drives the corresponding cutter to press against the surface of the label film mounted on the central guide post. The drive unit then drives the blade disc to rotate, allowing the cutters to perform rotary cutting of the label film.

[0005] Regarding the above-mentioned related technologies, the existing sleeve labeling machine's cutting mechanism needs to stop pulling the label film when cutting the label film. Furthermore, after the cutting mechanism completes a single film cutting operation, the servo motor needs to first cause the corresponding forming cutter to swing back to its original position. 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 contact the surface of the label film to perform the cutting operation. The overall operation is relatively cumbersome, and the label film cutting efficiency is low. Furthermore, when any cutter on the cutter disc wears out, it can easily 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 films by a sleeve labeling machine, the present application provides a quick cutting mechanism for label films by a sleeve labeling machine.

[0007] The present application provides a label film rapid cutting mechanism for a sleeve labeling machine, which adopts the following technical solutions:

[0008] A quick cutting mechanism for label film of a 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 parallel; a forming cutter is provided on the outer periphery of the cutter shaft, the blade of the forming cutter is arranged away from the axis direction of the cutter shaft, and the blade of the forming cutter is serrated; a knife pad is provided on the outer periphery of the knife pad shaft corresponding to the forming cutter, and the knife pad 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.

[0009] By adopting the above technical solution, the label film before entering the center guide post is passed into the gap between the cutter shaft and the blade pad shaft. The cutter shaft and the blade pad shaft are driven to rotate by the drive assembly. When the cutter shaft and the blade pad shaft rotate until the forming cutter blade contacts the corresponding blade pad, the forming cutter and the blade pad cooperate to form a tear line on the label film, thus pre-cutting the label film. During the cutting process, the traction mechanism of the sleeve labeling machine continuously pulls the label film with the tear line toward the center guide post, thereby using the center guide post 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 center guide post of the sleeve labeling machine pulls the two adjacent label films through the tear line and sleeves the label film around the product. Compared with the existing cutting mechanism of the sleeve labeling machine, the cutting mechanism can cooperate with the normal pulling of the label film by the sleeve labeling machine traction mechanism to achieve continuous cutting of the label film, eliminating the need for frequent servo motor control of the cutter swing, effectively improving the sleeve labeling machine's cutting efficiency.

[0010] 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 meshed; the rotary driving member is drivingly connected to the cutter shaft for driving the cutter shaft to rotate.

[0011] By adopting the above technical solution, in the process of subsequently 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 sub-gear, so as to facilitate the subsequent abutment cooperation between the forming cutter and the knife pad block to form a ring-shaped tear line on the label film.

[0012] Preferably, a first connecting seat is 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.

[0013] 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 and replacement of the forming cutter after it is worn.

[0014] 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, and the limiting block is provided with a limiting protrusion on the side facing the protrusion, and the limiting protrusion abuts against the side of the protrusion away from the axis direction of the cutter shaft.

[0015] 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 stable installation of the forming cutter in the first connecting groove.

[0016] Preferably, a flexible buffer pad is provided on one side of the first connecting groove facing the axis direction of the cutter shaft, and the forming cutter abuts against the flexible buffer pad.

[0017] 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 by the flexible buffer pad in the first connecting groove to a certain distance. The impact of the flexible buffer knife pad on the forming cutter blade is utilized to reduce the situation where 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.

[0018] Preferably, a fixing part 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 part includes a plurality of fixed airbags installed in the mounting groove, and the plurality of fixed airbags are connected to the air source.

[0019] By adopting the above technical solution, 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 expanded fixed airbag is used to fix the forming cutter tightly in the first connecting groove. On the one hand, it is beneficial to limit the shaking and displacement of the forming cutter during the subsequent rotation of the cutter shaft and the abutment and cooperation between the forming cutter and the knife pad; at the same time, during the abutment and cooperation between the forming cutter and the knife pad, the forming 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 forming 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 forming cutter is subjected to force, which is beneficial to reduce the deformation of the forming cutter and the first connecting groove under force.

[0020] 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.

[0021] 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 plate 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.

[0022] 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. The knife pad block is fixed in the second connecting groove by a plurality of fastening bolts.

[0023] By adopting the above technical solution, the cutter pad can be detachably mounted on the cutter pad shaft, which facilitates the subsequent disassembly, assembly and replacement of the cutter pad when it is damaged.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 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 assembly. When the cutter shaft and the knife pad shaft rotate until the forming cutter blade abuts against the knife pad, the forming cutter and the knife pad cooperate to form a ring-shaped easy-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 easy-tear line between the adjacent label films and put them on the corresponding product periphery; the cutting mechanism can cooperate with the traction mechanism of the labeling machine to pull and transmit the label film to achieve continuous cutting of the label film, effectively improving the cutting efficiency of the labeling machine.

[0026] 2. By arranging 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 flexible buffer pad is used to cushion the impact of the knife pad on the forming cutter, 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.

[0027] 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 to the connecting groove, the subsequent forming cutter and the knife pad can be used to limit the sliding and shaking of the forming cutter between the two relative groove walls of 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

[0028] Figure 1 It is a schematic diagram of the overall structure of the cutting mechanism used in the embodiment of the present application.

[0029] Figure 2 This is a schematic diagram of an embodiment of the present application used to illustrate the state when the cutter shaft and the knife pad shaft rotate relative to each other.

[0030] Figure 3 It is a structural schematic diagram used to illustrate the cutter shaft in an embodiment of the present application.

[0031] Figure 4 yes Figure 3 Enlarged schematic diagram of part A in the middle.

[0032] Figure 5 yes Figure 3 Enlarged schematic diagram of part B in the middle.

[0033] Figure 6 It is a structural diagram used to illustrate the fixing member in an embodiment of the present application.

[0034] Figure 7 It is a structural schematic diagram used to illustrate the knife pad shaft in an embodiment of the present application.

[0035] Figure 8 yes Figure 7 Enlarged schematic diagram of part C in the middle.

[0036] Description of reference numerals:

[0037] 1. Frame; 10. Support block; 2. Cutter shaft; 20. First connecting seat; 200. Wear-resistant plate; 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 part; 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; 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

[0038] The following is combined with Figure 1-8 This application is described in further detail.

[0039] The present application embodiment discloses a label film fast cutting mechanism for a sleeve labeling machine, referring to Figure 1 and Figure 2 The machine comprises a frame 1, to which a cutter shaft 2 and a knife shim shaft 3 are rotatably connected. A forming cutter 21 is protruding from the outer periphery of the cutter shaft 2, with the blade of the forming cutter 21 facing away from the cutter shaft 2 and having a plurality of notches formed therein to form a serrated edge. A knife shim block 31 is protruding from the knife shim shaft 3 in correspondence with the forming cutter 21. The knife shim block 31 is configured to abut against the forming cutter 21. The frame 1 is also provided with a drive assembly 4 for driving the cutter shaft 2 and the knife shim shaft 3 to rotate relative to each other.

[0040] After the label film entering the center guide column of the 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, completing the pre-cutting process of the label film. Subsequently, the labeling mechanism of the labeling machine pulls the label film apart through the easy-tear line of the adjacent label film and puts it onto the corresponding product.

[0041] 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.

[0042] Reference Figure 1The drive assembly 4 includes a main gear 41, a sub-gear 42, and a rotary drive 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 shim shaft 3. The main gear 41 and the sub-gear 42 are meshed. The rotary drive member 43 includes a reduction motor mounted on the frame 1. The output end of the reduction motor is connected to the cutter shaft 2 via a synchronous pulley structure, which is used to drive the cutter shaft 2 to rotate.

[0043] 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 sub-gear 42. When the forming cutter 21 on the cutter shaft 2 and the knife pad block 31 on the knife pad shaft 3 are in contact and engaged, an easy-tear line can be formed on the label film.

[0044] In this embodiment, the forming cutters 21 are provided at four locations and the knife pads 31 are provided at two locations. Subsequently, each time the cutter shaft 2 rotates one circle, the cutting and forming of four easy-tear lines can be completed, which is beneficial to further improve the cutting efficiency of the label film.

[0045] Reference Figure 3 and Figure 4 Four first connecting seats 20 are protruding from the outer circumference of the cutter shaft 2, corresponding to the four forming cutters 21. A first connecting groove 201 is recessed on each side of the first connecting seat 20 facing away from the cutter shaft 2, and the forming cutters 21 are each inserted into the corresponding first connecting groove 201. The cutting edges of the blades 212 of the forming cutters 21 extend out of the notches of the first connecting grooves 201. A stopper is also provided in the first connecting grooves 201 to prevent the forming cutters 21 from disengaging.

[0046] The forming cutter 21 includes a knife seat 211 and a blade 212. A stepped groove 2111 is formed on one side of the knife seat 211. The blade 212 is embedded in the stepped groove 2111 and the 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 both 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 a limiting protrusion 203 on the side facing 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 separating from the knife seat; at the same time, after the blade 212 is worn, it is convenient to remove and replace the blade 212 separately.

[0047] Reference Figure 3 and Figure 5The first connecting groove 201 is provided with a flexible buffer pad 204 on the side of the groove wall facing the axis of the cutter shaft 2. In this embodiment, the flexible buffer pad 204 is a rubber pad and is fixed to the bottom groove wall of the first connecting groove 201 by glue. The blade seat 211 of the forming cutter 21 abuts against the flexible buffer pad 204 on the side facing the axis of the cutter shaft 2. Due to the provision of the flexible buffer pad 204, when the cutter shaft 2 and the blade pad shaft 3 rotate relative to each other so that the forming cutter 21 abuts against the blade pad 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. The flexible buffer pad 204 effectively buffers the impact of the blade pad 31 on the forming cutter 21, thereby reducing the situation where the forming cutter 21 is easily damaged due to direct rigid contact between the forming cutter 21 and the blade pad 31.

[0048] 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 via 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. The plurality of fixing airbags 221 are all installed in the mounting groove, and the sides of the fixing airbags 221 facing away from the notch of the mounting groove are connected to a connecting block 222. The fixing seat 220 is provided with a plurality of positioning bolts corresponding to the plurality of fixing airbags 221. The positioning bolts pass through the fixing seat 220 and the first connecting seat 20 and are threadedly connected to the connecting blocks 222 of the corresponding fixing airbags 221, so as to firmly position the plurality of fixing airbags 221 in the mounting groove and prevent the subsequent fixing airbags 221 from slipping in the mounting groove.

[0049] 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.

[0050] One end of the cutter shaft 2 defines a main air inlet hole 23. This main air inlet hole 23 is connected to several branch air inlet holes 24 corresponding to the fixing bases 220. These branch air inlet holes 24 are connected to several auxiliary connecting holes 25 corresponding to the air supply holes 26 of the fixing bases 220. Each auxiliary connecting hole 25 is connected to the corresponding air supply holes 26. In this embodiment, the main air inlet hole 23, the branch air inlet holes 24, and the auxiliary connecting holes 25 can all be machined. A pneumatic rotary joint 5 is mounted on the end of the cutter shaft 2 defining the main air inlet hole 23. The rotating end of the pneumatic rotary joint 5 is coaxially connected to the end of the cutter shaft 2 and connected to the main air inlet hole 23. The fixed end of the pneumatic rotary joint 5 is connected to an air source.

[0051] 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 air bags 221 at various locations on the cutter groove to expand the fixed air bags 221, and the expanded fixed air bags 221 are used to press the forming cutter 21 tightly against the first connecting groove 201. On the one hand, it can limit the slippage and shaking of the forming cutter 21 in the first connecting groove 201 during the rotation of the cutter shaft 2, which is conducive to better installation and fixation of the forming cutter 21 in the first connecting groove 201; at the same time, the fixed air bags 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 it and 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 stress and deformation of both the forming cutter 21 and the first connecting seat 20.

[0052] During 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.

[0053] 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 number of countersunk bolts. The wear-resistant sheet 200 and the mounting groove are respectively located on the groove walls on 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 is beneficial to reduce the situation where 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.

[0054] Reference Figure 7 and Figure 8 Two second connecting seats 30 are protruded 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 slot of the second connecting groove 301.

[0055] 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 subsequently, the fastening bolts 32 can be unscrewed from the second connecting seat 30, and the knife pad block 31 can be removed and replaced from the second connecting seat 30, making the disassembly and assembly of the knife pad block 31 simpler and more convenient.

[0056] 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 cutter 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 cutter pad shaft 3.

[0057] 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 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 relative to each other until the forming cutter 21 and the knife pad block 31 abut and cooperate, the forming cutter 21 and the knife pad block 31 cooperate to form an easy-tear line on the label film, thereby realizing pre-cutting of the label film. When the subsequent labeling machine is labeling, the labeling mechanism on the labeling machine pulls off the adjacent label films through the easy-tear line, and puts the pulled label films onto the periphery of the product to complete the labeling operation of the product.

[0058] 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, thereby realizing 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, thereby effectively improving the cutting efficiency of the label film by the sleeve labeling machine.

[0059] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A label film rapid cutting mechanism for a sleeve labeling machine, characterized by: The invention comprises a frame (1), wherein a cutter shaft (2) and a knife pad shaft (3) are rotatably connected to the frame (1); the rotary axes of the cutter shaft (2) and the knife pad shaft (3) are axially parallel; 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 axis direction of the cutter shaft (2), and the blade of the forming cutter (21) is serrated; 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); the frame (1) is also provided with a driving component (4) for driving the cutter shaft (2) and the knife pad shaft (3) to rotate relative to each other; A first connecting seat (20) is convexly provided on the outer periphery of the cutter shaft (2) corresponding to the forming 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 forming cutter (21) is embedded in the first connecting groove (201), and the blade of the forming 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 forming cutter (21) from being separated from the first connecting groove (201); 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 both 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 axis direction of the cutter shaft (2); A flexible buffer pad (204) is provided on one side of the first connecting groove (201) facing the axis direction of the cutter shaft (2), and the forming cutter (21) abuts against the flexible buffer pad (204); The first connecting seat (20) is also provided with a fixing member (22) for fixing the forming cutter (21); a mounting groove is provided on one side wall of the first connecting groove (201); the fixing member (22) includes a plurality of fixed air bags (221) installed in the mounting groove, and the plurality of fixed air bags (221) are all connected to an air source.

2. The label film rapid cutting mechanism for 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 meshed; 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 for a sleeve labeling machine according to claim 1, characterized in that: A wear-resistant sheet (200) is further 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 the 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).

4. The label film rapid cutting mechanism for 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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