Cutting device in hot melt adhesive labeling machine and hot melt adhesive labeling machine

Abstract

The utility model discloses a cutting device among hot melt adhesive labeller, include: support, cut roller shaft is installed on the support, and the side surface of cut roller shaft is fixed with the tool rest, and the tool rest is fixed with the moving knife, and the cutting roller fixed sleeve is installed on the cut roller shaft, and the side wall of cutting roller is equipped with the hole of giving room, and the moving knife is stretched out from the hole of giving room, and the one side of cutting roller is installed with the static knife, and the top of support is fixed with vacuum disc and negative pressure air pipe, and the top of vacuum disc and cutting roller is in abutment, and negative pressure air pipe is connected on vacuum disc, and the top of cutting roller is equipped with the air extraction hole, and the side surface of cutting roller is equipped with the label suction hole, and the surface of cutting roller is sprayed with wear -resisting ceramic layer, and the outer surface of moving knife is equipped with the negative pressure hole, and the air channel is equipped between moving knife and tool rest, and the air channel is linked together with vacuum disc, and the top of cutting roller is fixed with the friction piece, and vacuum disc and friction piece are in abutment. The cutting device among hot melt adhesive labeller can reduce friction resistance and electrostatic interference, can accurate positioning and reduce cutting misplacement, can prevent label edge everted after cutting.

Description

Technical Field

[0001] This utility model relates to the field of hot melt adhesive labeling machines, and more specifically to a cutting device in a hot melt adhesive labeling machine. Background Technology

[0002] The cutting devices of existing hot melt adhesive labeling machines generally adopt rotary blade cutting technology, which completes the cutting through the relative movement of the blade and the label material. However, this technology has the following core defects: (1) excessive sliding friction during cutting, which causes the label to stretch and deform or scratch the surface; (2) frictional resistance and static electricity accumulation interfere with the label positioning, causing the cutting position to shift; (3) the label edge flips outward after cutting, affecting the flatness of the label. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a cutting device that can reduce frictional resistance and electrostatic interference, accurately position and reduce cutting misalignment, and prevent the label edge from turning outward after cutting, as well as a hot melt adhesive labeling machine using the cutting device.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: a cutting device in a hot melt adhesive labeling machine, comprising: a bracket; a cutting roller shaft rotatably mounted vertically on the bracket via bearings; a knife holder fixed on the side of the cutting roller shaft; a moving knife fixed on the knife holder; a cutting roller coaxial with the cutting roller shaft and fixedly fitted onto the cutting roller shaft; a clearance hole provided on the side wall of the cutting roller; the moving knife extending from the clearance hole; and the cutting edge of the moving knife protruding from the outer circumference of the cutting roller; a stationary knife mounted on the bracket on one side of the cutting roller; a vacuum disk and a negative pressure air pipe fixed on the top of the bracket; the vacuum disk surrounding the outside of the cutting roller shaft and abutting against the top of the cutting roller; the negative pressure air pipe connected to the suction port of the vacuum disk; and an air extraction hole connected to an air groove on the lower surface of the vacuum disk provided on the top of the cutting roller. The cutting roller has suction holes connected to the air extraction holes on its side. The negative pressure generated by the suction through the negative pressure air pipe is distributed to each suction hole through the vacuum disk. When the cutting roller shaft rotates, the label can be attracted to the surface of the cutting roller by the suction holes and can rotate with the cutting roller. As it rotates, the moving blade can cut the attracted label by tangential contact with the stationary blade. The cutting roller is characterized by: a wear-resistant ceramic layer being sprayed on its surface; negative pressure holes being provided on the outer surface of the moving blade; an air passage being provided between the moving blade and the blade holder; the air passage being connected to the air groove on the lower surface of the vacuum disk; so that the negative pressure holes can generate negative pressure to attract the label when the negative pressure air pipe is suctioned; a friction plate being fixed on the top of the cutting roller; the vacuum disk abutting against the friction plate; and the holes on the friction plate corresponding to the holes on the top of the cutting roller.

[0005] Furthermore, in the aforementioned hot melt adhesive labeling machine, the cutting device comprises a cutting roller made of two parts joined together.

[0006] Furthermore, in the aforementioned hot melt adhesive labeling machine, the cutting device includes a knife holder fixed on each of the opposite sides of the cutting roller shaft, and a moving knife fixed on each of the two knife holders.

[0007] Furthermore, in the aforementioned hot melt adhesive labeling machine, the cutting device includes a support structure comprising an upper mounting plate, a lower mounting plate, and two columns. The upper mounting plate is located above the lower mounting plate, and the two columns are located on the left and right sides between the two mounting plates. The lower ends of the two columns are fixed to the lower mounting plate and integrally formed. The upper ends of the two columns are positioned to the left and right sides of the upper mounting plate by tapered pins and are fixed to the upper mounting plate by bolts. The cutting roller shaft is installed between the two mounting plates, and the stationary blade is installed on one column.

[0008] Furthermore, in the aforementioned hot melt adhesive labeling machine, the cutting device includes a cutting roller shaft driven by a servo motor.

[0009] A hot melt adhesive labeling machine, characterized in that it employs the aforementioned cutting device.

[0010] The advantages of this invention are as follows: the cutting device has a wear-resistant ceramic layer sprayed on the surface of the cutting roller, which reduces the frictional resistance to 30% of that of traditional devices and reduces the surface scratch rate by 95%. The anti-static interference design of the wear-resistant ceramic layer reduces label stretching deformation, and the cutting edge is flat and without folds. The wear-resistant ceramic layer can also extend the life of the cutting roller to 3 times that of traditional metal rollers and reduce maintenance costs by 40%. The negative pressure hole is connected to the vacuum disk and negative pressure air pipe through the air channel, which can enhance the adsorption force on the end of the label, thus preventing the label end from turning over after cutting. The friction plate can avoid wear on the top of the cutting roller, and the friction plate is easy to replace after wear. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the cutting device in the hot melt adhesive labeling machine of this utility model.

[0012] Figure 2 This is an assembly diagram of the cutting roller shaft, moving blade, cutting roller, and vacuum disc.

[0013] Figure 3 for Figure 2 A schematic diagram of the explosion structure.

[0014] Figure 4 This is a schematic diagram of a cutting device cutting a label.

[0015] Figure 5 This is a diagram showing the disassembly of the support. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0017] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the cutting device in the hot melt adhesive labeling machine includes: a bracket 1; a cutting roller shaft 2 is vertically mounted on the bracket 1 and rotatably via bearings; a knife holder 3 is fixed on the side of the cutting roller shaft 2; a moving knife 4 is fixed on the knife holder 3; a cutting roller 5 is coaxial with the cutting roller shaft 2 and is fixedly mounted on the cutting roller shaft 2; a clearance hole 6 is provided on the side wall of the cutting roller 5; the moving knife 4 extends out of the clearance hole 6, and the cutting edge of the moving knife 4 protrudes from the outer circumference of the cutting roller 5; a stationary knife 7 is mounted on the bracket 1 on one side of the cutting roller 5; and the cutting roller 5 is mounted on the bracket 1. A vacuum disk 8 and a negative pressure air pipe 9 are fixed at the top. The vacuum disk 8 is sleeved around the outside of the cutting roller shaft 2 and abuts against the top of the cutting roller 5. The negative pressure air pipe 9 is connected to the suction port of the vacuum disk 8. An air extraction hole 19 is provided on the top of the cutting roller 5, which is connected to the air groove 13 on the lower surface of the vacuum disk 8. A label suction hole 10 is provided on the side of the cutting roller 5, which is connected to the air extraction hole 19. The negative pressure generated by the suction through the negative pressure air pipe 9 can be distributed to each label suction hole 10 through the vacuum disk 8. When the cutting roller shaft 2 rotates, the label 18 can be sucked up. The label 10 is adsorbed onto the surface of the cutting roller 5 and rotates with it. As it rotates, the moving blade 4 cuts the adsorbed label 18 tangentially to the stationary blade 7. The surface of the cutting roller 5 is coated with a wear-resistant ceramic layer, which reduces the coefficient of friction by 50%, provides anti-static properties, and reduces label sliding resistance and static electricity accumulation. A negative pressure hole 11 is provided on the outer surface of the moving blade 4, and an air passage 12 is provided between the moving blade 4 and the blade holder 3. The negative pressure hole 11 is connected to the vacuum disk 8 and the negative pressure air pipe 9 through the air passage 12. This enhances the adsorption force on the label end, preventing the label end from flipping after cutting. The air channel 12 and the air groove 13 on the lower surface of the vacuum disk 8 are connected, so that the negative pressure hole 11 can generate negative pressure to adsorb the label 18 when the negative pressure air pipe 9 is suctioned. A friction plate 14 is fixed on the top of the cutting roller 5. The vacuum disk 8 abuts against the friction plate 14. The holes on the friction plate 14 correspond to the holes on the top of the cutting roller 5. The friction plate 14 can avoid wear on the top of the cutting roller 5. The friction plate 14 is easy to replace after wear.

[0018] The cutting roller 5 is composed of two parts joined together. A blade holder 3 is fixed on each opposite side of the cutting roller shaft 5, and a movable blade 4 is fixed to each blade holder 3. The movable blade 4 is fixed to the blade holder 3 with screws. The two blade holders 3 are symmetrically mounted on the cutting roller shaft 2 with screws. The cutting roller 5 and the cutting roller shaft 2 are detachably connected for easy and quick maintenance. Figure 5As shown, the structure of bracket 1 includes: an upper mounting plate 15, a lower mounting plate 16, and two columns 17. The upper mounting plate 15 is located above the lower mounting plate 16, and the two columns 17 are located on the left and right sides between the two mounting plates. The lower ends of the two columns 17 are fixed to the lower mounting plate 16 and integrally formed. The upper ends of the two columns 17 are positioned to the left and right sides of the upper mounting plate 15 by tapered pins and are fixed to the upper mounting plate 15 by bolts. The cutting roller shaft 2 is installed between the two mounting plates, and the stationary blade 7 is installed on one of the columns 17. This arrangement facilitates maintenance and ensures accuracy when reassembling bracket 1. The cutting roller shaft 2 is driven by a servo motor, which drives the cutting roller shaft 2 to rotate precisely, controlling the cutting rhythm and position, and reducing cutting misalignment through precise positioning.

[0019] The hot melt adhesive labeling machine using the aforementioned cutting device also has the advantages of the cutting device.

Claims

1. A cutting device in a hot melt labeler, comprising: The support frame and the cutting roller shaft are vertically mounted on the support frame and rotatably supported by bearings. A knife holder is fixed to the side of the cutting roller shaft, and a moving knife is fixed on the knife holder. The cutting roller is coaxial with the cutting roller shaft and is fixedly fitted onto the cutting roller shaft. A clearance hole is provided on the side wall of the cutting roller, through which the moving knife extends, and the cutting edge of the moving knife protrudes from the outer circumference of the cutting roller. A stationary knife is mounted on the support frame on one side of the cutting roller. A vacuum disk and a negative pressure air pipe are fixed to the top of the support frame. The vacuum disk is fitted around the outside of the cutting roller shaft and abuts against the top of the cutting roller. The negative pressure air pipe is connected to the suction port of the vacuum disk. An air extraction hole is provided on the top of the cutting roller, communicating with an air groove on the lower surface of the vacuum disk. An air extraction hole is provided on the side of the cutting roller, communicating with the air extraction hole. The label suction holes are generated by the negative pressure generated by the negative pressure air pipe and distributed to each suction hole by the vacuum disk. When the cutting roller shaft rotates, the label can be attracted to the surface of the cutting roller by the suction holes and can rotate with the cutting roller. As it rotates, the moving knife can cut the attracted label by tangential contact with the stationary knife. The feature is that: the surface of the cutting roller is coated with a wear-resistant ceramic layer, negative pressure holes are provided on the outer surface of the moving knife, and an air channel is provided between the moving knife and the knife holder. The air channel is connected to the air groove on the lower surface of the vacuum disk, so that the negative pressure holes can generate negative pressure to attract the label when the negative pressure air pipe is suctioned. A friction plate is fixed on the top of the cutting roller, and the vacuum disk abuts against the friction plate. The holes on the friction plate correspond to the holes on the top of the cutting roller.

2. The cutting device in a hot melt labeler of claim 1, wherein: The cutting roller is made up of two parts joined together.

3. The cutting device in the hot melt adhesive labeling machine according to claim 1 or 2, characterized in that: A knife holder is fixed on each of the two opposite sides of the cutting roller shaft, and a moving knife is fixed on each of the two knife holders.

4. The cutting device in the hot melt adhesive labeling machine according to claim 1 or 2, characterized in that: The support structure includes: an upper mounting plate, a lower mounting plate, and two columns. The upper mounting plate is located above the lower mounting plate, and the two columns are located on the left and right sides between the two mounting plates. The lower ends of the two columns are fixed to the lower mounting plate and integrally formed. The upper ends of the two columns are positioned to the left and right sides of the upper mounting plate by tapered pins and are fixed to the upper mounting plate by bolts. The cutting roller shaft is installed between the two mounting plates, and the stationary knife is installed on one column.

5. The cutting device in the hot melt adhesive labeling machine according to claim 1 or 2, characterized in that: The cutting roller shaft is driven by a servo motor.

6. A hot melt adhesive labeling machine, characterized in that: The cutting device described in claim 1, 2, 3, 4, or 5 is used.

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