CN112721269A

CN112721269A - Coin destroying device and method

Info

Publication number: CN112721269A
Application number: CN201910971744.0A
Authority: CN
Inventors: 曹光辉; 马立项; 吴金平; 章小进
Original assignee: Nanjing Banknote Minting Co ltd; China Banknote Printing and Minting Corp
Current assignee: Nanjing Banknote Minting Co ltd; China Banknote Printing and Minting Corp
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2021-04-30

Abstract

The invention belongs to the technical field of special machines for banks, and particularly relates to a coin destroying device which comprises two rolling rollers which are arranged in parallel, wherein a roller gap between the two rolling rollers corresponds to the thickness of a coin to be destroyed, the surfaces of the rolling rollers are provided with wave-shaped grooves, each wave-shaped groove comprises a plurality of annular grooves, the annular grooves are enclosed around the circumferential direction of the rolling rollers, the annular grooves are sequentially distributed along the axial direction of the rolling rollers, the wave-shaped grooves of the two rolling rollers are mutually meshed, and the surfaces of the wave-shaped grooves are provided with concave-convex lines. Has the advantages that: the wavy grooves of the two rolling rollers of the coin destroying device are mutually occluded, the two rolling rollers can extrude the coins to generate plastic deformation so as to change the coins into wavy shapes, the power consumption is low, the coin deformation amount is large, and meanwhile, concave-convex lines are arranged on the surfaces of the wavy grooves, and the patterns on the surfaces of the coins are covered by the lines extruded by the concave-convex lines and cannot be identified.

Description

Coin destroying device and method

Technical Field

The invention belongs to the technical field of special machines and tools for banks, and particularly relates to a coin destroying device and a coin destroying method.

Background

Currently known coin destroying methods are mainly divided into two types: one type is to destroy the coin through a metal melting mode, and in the mode, the coin is thoroughly destroyed, but the destroying process needs a specially-assigned person to escort, supervise and destroy, and the safety supervision risk is higher. The other type is mechanical destruction, which is divided into three modes, one mode is that coins are rolled and thinned by two cylindrical rolling rollers with patterns on the surfaces, and the patterns on the surfaces of the coins are crushed at the same time, but the coin destruction mode has higher power consumption and affects the destruction efficiency; secondly, the wavy rolling roller extrudes the coins to generate plastic deformation so as to change the coins into wavy shapes, the destruction mode has low power consumption and large coin deformation amount, but the pattern of the large part of the surface of the coins cannot be well destroyed, and obvious coin pattern characteristics still remain; the third is to cut the coin in two or more parts by mechanical cutting, but the pattern of the cut coin surface still exists, and the cut waste coin is difficult to manage digitally.

Disclosure of Invention

The invention provides a coin destroying device and a method thereof, aiming at solving the problems that the patterns on the surface of a coin are not completely crushed and the power consumption is higher when the coin is destroyed in the prior art.

In order to solve the technical problems, the technical scheme adopted by the invention is that the coin destroying device comprises two rolling rollers which are arranged in parallel, a roller gap between the two rolling rollers corresponds to the thickness of a coin to be destroyed, the surfaces of the rolling rollers are provided with wave-shaped grooves, each wave-shaped groove comprises a plurality of annular grooves, the annular grooves are enclosed around the circumferential direction of the rolling rollers, the annular grooves are sequentially distributed along the axial direction of the rolling rollers, the wave-shaped grooves of the two rolling rollers are mutually meshed, and the surfaces of the wave-shaped grooves are provided with concave-convex lines.

Preferably, the concave-convex lines are distributed regularly or irregularly.

Preferably, an annular bulge is arranged between every two adjacent annular grooves, the section of each annular bulge is in a triangular shape protruding outwards, and the two sides of each annular bulge are provided with the regular stripe-shaped concave-convex lines. The cross section of the combined annular bulge is in a triangular shape protruding outwards, so that when two rolling rollers are used for extrusion, the coin is extruded into a wave shape by the wave-shaped groove, and the energy consumption of the coin destroying device is further reduced; the regular stripe-shaped concave-convex lines are convenient to process; the stripe-shaped concave-convex lines extrude lines on the surface of the coin under the extrusion effect, and the original patterns are covered and cannot be identified.

A method of destroying coins in a coin destroying apparatus according to any one of the above claims, comprising the steps of:

s1: adjusting the size of the roll gap according to the thickness of the coins to be destroyed;

s2: the two rolling rollers rotate in opposite directions;

s3: the coin that treats the destruction is through two during the extrusion of rolling roller is drawn into the roll gap, the coin is two become the wave under the extrusion of rolling roller, and unsmooth line has corresponding line at the surface extrusion of coin simultaneously, and original pattern in coin surface is covered and can't discern.

Has the advantages that: the wavy grooves of the two rolling rollers of the coin destroying device are mutually occluded, concave-convex lines are arranged on the surfaces of the wavy grooves, the two rolling rollers can extrude coins to generate plastic deformation so as to change the coins into wavy shapes conveniently, the power consumption is low, the coin deformation is large, and meanwhile, the concave-convex lines are arranged on the surfaces of the wavy grooves, so that patterns on the surfaces of the coins are covered by the lines extruded by the concave-convex lines and cannot be identified; the coin destroying device has the advantages of ingenious structural design, simple and easy operation of the destroying process, low energy consumption, stable and reliable coin destroying function, and convenience for subsequent management of the destroyed coins.

Drawings

Fig. 1 is a schematic side view of an embodiment 1 of the coin destruction apparatus of the present invention;

fig. 2 is a schematic front view of an embodiment 1 of the coin destruction apparatus of the present invention;

fig. 3 is a schematic perspective view of the coin destruction device of the present invention after the coin is destroyed;

fig. 4 is a schematic side view of embodiment 2 of the coin destruction apparatus of the present invention;

in the figure: 1. the device comprises a grinding roller, 11, wave-shaped grooves, 111, annular grooves, 112, annular bulges, 12, concave-convex lines, 2, coins, 3, an oscillating bin, 4, a feeding elevator, 5, an oscillating coin arranging device and 6, and a grinding destruction unit; 7. a discharge elevator 8 and a collecting cylinder; the size of the roll gap B and the center distance A between two rolling rolls.

Detailed Description

Example 1

As shown in fig. 1 to 3, a coin destroying device comprises two rolling rollers 1 arranged in parallel, wherein a roller gap between the two rolling rollers 1 corresponds to the thickness of a coin 2 to be destroyed, a wavy groove 11 is formed in the surface of the rolling roller 1, the wavy groove 11 comprises a plurality of annular grooves 111, the annular grooves 111 surround the rolling roller 1 in the circumferential direction, the annular grooves 111 are sequentially distributed along the axial direction of the rolling roller 1, the wavy grooves 11 of the two rolling rollers 1 are mutually meshed, and concave-convex grains 12 are formed in the surface of the wavy groove 11; the concave-convex lines 12 are distributed regularly or irregularly.

As shown in fig. 2, in order to further facilitate the coin destruction device to crush the coins 2 to be destroyed and reduce energy consumption, an annular protrusion 112 is provided between two adjacent annular grooves 111, a cross section of the annular protrusion 112 is a triangle protruding outward, and both sides of the annular protrusion 112 of this embodiment are provided with the regular stripe-shaped concave-convex lines 12; stripe form the axial of the direction orientation rolling roller 1 of unsmooth line 12, under the extrusion effect, the line that the pattern on coin 2 surface was extruded by unsmooth line 12 covers and can't discern.

A coin destruction method according to the above coin destruction apparatus, comprising the steps of:

s1: adjusting the size B of the roll gap according to the thickness of the coin 2 to be destroyed, wherein the adjustment of the size B of the roll gap is realized by adjusting the center distance A of the two rolling rolls 1 as shown in figure 2;

s2: the two rolling rolls 1 rotate in opposite directions;

s3: the coin 2 to be destroyed is rolled into the roll gap through the extrusion of the two rolling rolls 1, the coin 2 becomes wave under the extrusion action of the two rolling rolls 1, meanwhile, the concave-convex grains 12 extrude corresponding grains on the surface of the coin 2, as shown in fig. 3, the original pattern on the surface of the coin 2 is covered and can not be identified.

Example 2

As shown in fig. 4, in this embodiment, the coin destruction device differs from embodiment 1 in that the coin destruction device further includes an oscillating bin 3, a feeding elevator 4, an oscillating coin sorting device 5, a rolling destruction unit 6, a discharging elevator 7 and a collecting cylinder 8, which are connected in sequence, wherein the rolling destruction unit 6 includes two rolling rollers 1 of embodiment 1, which are arranged in parallel with each other.

Coin 2 destruction process: the coins 2 are stored through the oscillation bin 3, and the oscillator of the oscillation bin 3 outputs the coins 2 uniformly; the coins 2 are lifted to the oscillating coin arranging device 5 through the feeding lifter 4; the oscillation coin arranging device 5 flattens the coins 2 through vibration and evenly conveys the flattened coins 2 to the rolling and destroying unit 6; the coins 2 are rolled by the two rolling rollers 1 with opposite rotating directions to finish destroying, and the destroyed waste products are lifted by the discharging elevator 7 and conveyed to the collecting drum 8 to finish the whole destroying process.

Claims

1. A coin destruction device characterized in that: including two mutual parallel arrangement's rolling roller (1), two roll gap between rolling roller (1) is corresponding with the thickness of waiting to destroy coin (2), wave slot (11) have been seted up on the surface of rolling roller (1), wave slot (11) include a plurality of annular slot (111), annular slot (111) enclose around the circumference of rolling roller (1) and close, and are a plurality of annular slot (111) distribute in proper order along the axial of rolling roller (1), and two wave slot (11) the mutual interlock of rolling roller (1), unsmooth line (12) have been seted up on the surface of wave slot (11).

2. The coin destruction device according to claim 1, characterized in that: the concave-convex lines (12) are regularly or irregularly distributed.

3. The coin destruction device according to claim 1, characterized in that: an annular bulge (112) is arranged between every two adjacent annular grooves (111), the section of each annular bulge (112) is in a triangular shape protruding outwards, and the two sides of each annular bulge (112) are provided with the regular striped concave-convex grains (12).

4. A coin destruction method of a coin destruction apparatus according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:

s1: adjusting the size of the roll gap according to the thickness of the coins (2) to be destroyed;

s2: the two rolling rolls (1) rotate in opposite directions;

s3: the coin (2) to be destroyed is rolled into the roll gap through the extrusion of the two rolling rolls (1), the coin (2) is changed into a wave shape under the extrusion action of the two rolling rolls (1), meanwhile, the concave-convex lines (12) are extruded on the surface of the coin (2) to form corresponding lines, and the original patterns on the surface of the coin (2) are covered and cannot be identified.