Quick-change type label removing hob for plastic bottle label removing machine

Abstract

The utility model provides a quick-change type label removing hob for a plastic bottle label removing machine. The quick-change type label removing hob comprises a rolling cutter barrel capable of rotating relative to a fixed barrel and a plurality of cutter assemblies arranged on the outer circle surface of the rolling cutter barrel in a spiral mode. The cutter assembly further comprises a fixed cutter body connected to the surface of the rolling cutter barrel in a welded mode, a quick-release cutter clamp connected to the fixed cutter body through a positive pressure screw and a quick-change cutter point arranged between the fixed cutter body and the quick-release cutter clamp, and the pressing direction of the positive pressure screw is perpendicular to the outer circle of the rolling cutter barrel. The device is mainly used for realizing quick disassembly and replacement of an easily-worn cutter assembly of the label removing machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to a label removing knife for plastic bottle label removing machine, especially to a quick-change label removing hob for plastic bottle label removing machine. BACKGROUND

[0002] In the field of waste plastic bottle recycling, the recyclable part is PET material of bottle body and HDPE material of bottle cap, therefore, the label paper pasted around the plastic bottle needs to be torn off and separated from the bottle body and bottle cap for recycling.

[0003] The existing horizontal label removing machine mainly comprises an external fixed barrel, an internal rolling cutter barrel and a negative pressure suction channel installed on the upper part of the fixed barrel. The inner walls of the fixed barrel and the rolling cutter barrel are both provided with label removing hobs with sharp shapes, and the label removing hobs installed on the surface of the rolling cutter barrel are arranged in a spiral advancing mode. After the plastic bottle enters the horizontal label removing machine, the label paper on the surface of the plastic bottle is extruded, punctured and torn by the sharp label removing hobs during the rotation of the rolling cutter barrel relative to the fixed barrel, and finally peeled off from the bottle body. The label paper is discharged from the horizontal label removing machine by the negative pressure suction of the negative pressure suction channel on the upper part of the fixed barrel.

[0004] However, the sharp part of the label removing hob is continuously worn and torn during the above process, which will greatly reduce the label removing effect. Therefore, the equipment operator has to frequently replace the label removing hobs. The existing horizontal label removing machine is provided with hundreds of label removing hobs, and the dismounting direction of the detachable screws is parallel to the rotation center of the rolling cutter barrel, which requires the use of open-end wrench to dismount and mount the screws one by one from the side, resulting in extremely low efficiency. In addition, the sharp part of the existing label removing hob is integrally designed with the cutter body, which requires high cost for replacement. SUMMARY

[0005] The utility model discloses a kind of quick-change label removing hobs for plastic bottle label removing machine to solve the problems existing in prior art.

[0006] The quick-change label removing hob comprises: a rolling cutter barrel rotatable relative to a fixed barrel, and a plurality of cutter assemblies arranged in a spiral manner on the outer surface of the rolling cutter barrel.

[0007] The cutter assembly further comprises: a fixed cutter body connected to the surface of the rolling cutter barrel by welding, a quick-release cutter holder connected to the fixed cutter body by a positive screw, and a quick-change cutter tip disposed between the fixed cutter body and the quick-release cutter holder. The compression direction of the positive screw is perpendicular to the outer circle of the rolling cutter barrel. The quick-change cutter tip is a consumable accessory, which can be quickly replaced by separating the fixed cutter body from the quick-release cutter holder through a portable air-driven torque wrench or electric wrench when replacing the quick-change cutter tip.

[0008] Further, in order to lock the position of the quick-change tool tip, the fixed tool body is provided with a counterbore, the quick-release tool holder is provided with a through hole one coaxial with the counterbore at the corresponding position, the quick-change tool tip is a stepped cylinder, the large-diameter end of the quick-change tool tip is installed in the counterbore, and the small-diameter end of the quick-change tool tip penetrates into the through hole one.

[0009] Further, the fixed tool body is provided with a threaded hole matched with the threaded part of the positive pressure screw, the quick-release tool holder is provided with a through hole two coaxial with the threaded hole at the corresponding position, and the positive pressure screw is installed in the threaded hole and the through hole two.

[0010] Further, the side surface of the quick-release tool holder is serrated, the positive pressure screw is located at the low-lying part of the serration, and the frequent contact between the positive pressure screw and the plastic bottle during rotation of the quick-change tool is avoided, so that the wear of the screw head is reduced.

[0011] Further, the small-diameter end of the quick-change tool tip is provided with a sharp part which is higher than the upper end surface of the quick-release tool holder, so that the label paper on the surface of the plastic bottle can be easily pierced.

[0012] Further, in order to avoid the shear force on the positive pressure screw, the fixed tool body is provided with a clamping groove with a width consistent with the thickness of the quick-release tool holder.

[0013] The technical effects of the utility model are as follows: first, by means of the vertical pressing of the positive pressure screw and the split structure of the quick-release tool holder and the fixed tool body, the screw can be quickly disassembled and assembled by using a pneumatic torque wrench or an electric wrench, the problem that the traditional screw pressing direction is parallel to the tool barrel axis and only an open wrench can be used for low-efficiency disassembly and assembly is solved, the replacement efficiency of the label-removing hob is significantly improved, and the maintenance cost is reduced. Second, the stepped cylinder of the quick-change tool tip is precisely matched with the counterbore and the through hole one of the fixed tool body and the quick-release tool holder, the quick-change tool tip as a consumable part can be independently replaced, the overall replacement of the tool assembly is avoided, and the cost of consumables is greatly reduced. Third, the width of the clamping groove is matched with the thickness of the quick-release tool holder, the shear force borne by the positive pressure screw is effectively dispersed, and the service life of the screw is prolonged; the positive pressure screw is located at the low-lying position of the serrated structure of the side surface of the quick-release tool holder, the friction between the screw and the plastic bottle during rotation is reduced, and the wear of the screw head is prevented. Fourth, the sharp part of the small-diameter end of the quick-change tool tip protrudes from the upper end surface of the quick-release tool holder, directly acts on the label paper through the sharp structure, and combines the helical propulsion movement of the rolling tool barrel to realize the efficient piercing and tearing of the label paper. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the perspective view of the quick-change label-removing hob installed in the fixed barrel in the utility model;

[0015] Figure 2is the perspective view of the tool assembly in the utility model;

[0016] Figure 3 is the front view of the tool assembly in the utility model;

[0017] Figure 4 is the side view of the tool assembly in the utility model.

[0018] In the drawing, 1, fixed blade, 2, quick-release tool holder, 3, quick-change tool tip, 4, positive screw, 11, counterbore, 12, threaded hole, 13, clamping groove, 21, through hole one, 22, through hole two, 31, sharp part, 100, rolling tool barrel, 101, tool assembly, 200, fixed barrel; DETAILED DESCRIPTION

[0019] The embodiment of the utility model is specifically explained below. Figures 1 to 4 The embodiment of the utility model is specifically explained below.

[0020] Figure 1 The overall structure and positional relationship of the label removing hob installed in the horizontal label removing machine are shown, and the quick-change label removing hob comprises: a rolling tool barrel 100 rotatable relative to the fixed barrel 200, and a plurality of tool assemblies 101 arranged in a spiral on the outer circular surface of the rolling tool barrel 100.

[0021] The tool assembly 101 comprises: a fixed blade 1 connected to the surface of the rolling tool barrel 100 by welding, a quick-release tool holder 2 connected to the fixed blade 1 by a positive screw 4, and a quick-change tool tip 3 arranged between the fixed blade 1 and the quick-release tool holder 2, wherein the pressing direction of the positive screw 4 is perpendicular to the outer circle of the rolling tool barrel 100.

[0022] Figure 2 And Figure 3 The specific structure of the tool assembly is shown, the fixed blade 1 is provided with a counterbore 11, the quick-release tool holder 2 is provided with a through hole one 21 coaxial with the counterbore 11 at the corresponding position, the quick-change tool tip 3 is a stepped cylinder, the large-diameter end of the quick-change tool tip 3 is installed in the counterbore 11, and the small-diameter end of the quick-change tool tip 3 penetrates into the through hole one 21; the fixed blade 1 is provided with a threaded hole 12 matched with the threaded part of the positive screw 4, the quick-release tool holder 2 is provided with a through hole two 22 coaxial with the threaded hole 12 at the corresponding position, and the positive screw 4 is installed in the threaded hole 12 and the through hole two 22.

[0023] The side surface of the quick-release tool holder 2 is serrated, the positive screw 4 is located in the low-lying part of the serration, so as to avoid the positive screw 4 from frequently touching the plastic bottle when the quick-change label removing hob rotates; the small-diameter end of the quick-change tool tip 3 is provided with a sharp part 31, the sharp part 31 is higher than the upper end surface of the quick-release tool holder 2, and the label paper on the surface of the plastic bottle is conveniently pierced;

[0024] Figure 4 The cooperation structure of the quick-release knife holder and the end face of the fixed knife body is shown, the fixed knife body 1 is provided with a clamping groove 13, and the width of the clamping groove 13 is consistent with the thickness of the quick-release knife holder 2.

[0025] Working principle: the rolling knife barrel 100 rotates relative to the fixed barrel 200, the spiral arranged knife assembly 101 moves with the rolling knife barrel 100, the sharp part 31 of the quick-change knife tip 3 contacts the surface label paper of the plastic bottle, and through the rotating force of the rolling knife barrel 100 and the sharp part 31 of the quick-change knife tip 3, the label paper is extruded, pierced and torn, so that the label paper is separated from the plastic bottle body.

[0026] When the quick-change knife tip 3 is replaced, the positive pressure screw 4 is loosened by the pneumatic torque wrench or the electric wrench, the quick-release knife holder 2 is separated from the fixed knife body 1, and the worn knife tip 3 is directly taken out; the large diameter end of the new quick-change knife tip 3 is embedded in the counterbore 11, the small diameter end passes through the through hole one 21, the quick-release knife holder 2 is compressed and tightened by cooperating with the positive pressure screw 4 through the through hole two 22, and is locked by the threaded hole 12, so that the knife tip 3 is stable.

[0027] The width of the clamping groove 13 and the quick-release knife holder 2 is matched, the transverse displacement of the knife holder 2 is limited, the shear force concentration is avoided, and the service life of the screw is prolonged. The serrated structure on the side surface of the quick-release knife holder 2 forms multi-point contact with the head of the positive pressure screw 4, reduces the friction frequency of the positive pressure screw 4 and the plastic bottle in the rotating process, and prevents the screw head from being worn out.

[0028] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. A quick-change label removing hob for a plastic bottle label removing machine, characterized in that, The quick-change label removing hob comprises a rolling cutter barrel (100) rotatable relative to a fixed barrel (200), and a plurality of cutter assemblies (101) arranged in a spiral on the outer surface of the rolling cutter barrel (100); wherein the cutter assembly (101) further comprises a fixed cutter body (1) connected to the surface of the rolling cutter barrel (100) by welding, a quick-release cutter holder (2) connected to the fixed cutter body (1) by a normal pressure screw (4), and a quick-change cutter tip (3) arranged between the fixed cutter body (1) and the quick-release cutter holder (2), wherein the compression direction of the normal pressure screw (4) is perpendicular to the outer circle of the rolling cutter barrel (100).

2. The quick-change label removing hob for plastic bottle label removing machine according to claim 1, characterized in that, The fixed cutter body (1) is provided with a counterbore (11), the quick-release cutter holder (2) is provided with a through hole I (21) coaxial with the counterbore (11) at the corresponding position, the quick-change cutter tip (3) is a stepped cylinder, the large diameter end of the quick-change cutter tip (3) is installed in the counterbore (11), and the small diameter end of the quick-change cutter tip (3) penetrates into the through hole I (21).

3. The quick-change label removing hob for plastic bottle label removing machine according to claim 2, characterized in that, The fixed cutter body (1) is provided with a threaded hole (12) matched with the threaded part of the normal pressure screw (4), the quick-release cutter holder (2) is provided with a through hole II (22) coaxial with the threaded hole (12) at the corresponding position, and the normal pressure screw (4) is installed in the threaded hole (12) and the through hole II (22).

4. The quick change label removing hob for plastic bottle label removing machine according to claim 3, characterized in that, The side surface of the quick-release cutter holder (2) is serrated, the normal pressure screw (4) is located in the low-lying part of the serration, and the normal pressure screw (4) is prevented from frequently touching the plastic bottle when the quick-change label removing hob rotates.

5. The quick change label removing hob for plastic bottle label removing machine as claimed in claim 2 wherein, The small diameter end of the quick-change cutter tip (3) is provided with a thorn part (31) higher than the upper end surface of the quick-release cutter holder (2), so as to facilitate piercing the label paper on the surface of the plastic bottle.

6. The quick change label removing hob for plastic bottle label removing machine as claimed in claim 2 wherein, The fixed cutter body (1) is provided with a clamping groove (13) with a width consistent with the thickness of the quick-release cutter holder (2).

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