Printing roller structure easy to replace

Abstract

The utility model relates to the technical field of printing equipment, in particular to a printing roller structure easy to replace. According to the scheme of the utility model, the roller core and the roller cylinder of the printing roller are separately arranged, a plurality of holes are formed in the roller core and the roller cylinder, the permanent magnets are arranged in the holes of the roller cylinder, and the electromagnets and the limiting convex teeth made of magnetic metal are arranged in the holes of the roller core. When the limiting convex teeth are only influenced by the magnetic field of the permanent magnet, the limiting convex teeth can penetrate into a part of structures into holes of the roller, so that the relative positions of the roller and the roller core are fixed; when the limiting convex teeth are jointly subjected to magnetic fields of the permanent magnets and the electromagnets, due to the fact that the directions of the magnetic fields of the electromagnets and the permanent magnets are opposite and stronger, the limiting convex teeth retract into the holes of the roller core, and therefore the roller outside the roller core can be taken down to be separated from each other. According to the scheme that the roller core and the rollers are separately arranged, one roller core can be provided with a plurality of rollers, the cost for producing and manufacturing the printing roller can be reduced, manufacturing materials are saved, and the effects of energy conservation and emission reduction are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing equipment technical field, concretely relates to an easy replace printing roller structure. BACKGROUND

[0002] In the current printing industry, various printing equipment emerge in endlessly, in the printing category such as bucket outer pattern transfer printing, usually one pattern corresponds one printing roller, and the pattern is fixed in the production of printing roller. However, the patterns demanded by consumers on the market faced by the printing industry are certainly not one or two, but various, so printing manufacturers need to purchase a large number of printing rollers with different patterns to meet the needs of consumers, and this way of purchasing one printing roller for one pattern undoubtedly increases the purchase cost. Therefore, it is necessary to design a printing roller with replaceable transfer patterns, which separates the roller core and the roller barrel, sets different transfer patterns on the roller barrel, so that consumers only need to purchase different roller barrels when they need printing rollers with different patterns. This scheme of separating the roller core and the roller barrel not only saves manufacturing materials for manufacturers, plays a role in environmental protection and energy saving, reduces production cost, and improves product competitiveness; but also reduces the purchase cost of printing rollers for printing manufacturers and saves funds. SUMMARY

[0003] The utility model discloses an easy replace printing roller structure, which separates the roller core and the roller barrel, can replace the roller barrel with different patterns according to the demand during use, can reduce the cost of producing and manufacturing the printing roller, save manufacturing materials, and play a role in energy saving and emission reduction.

[0004] The utility model discloses an easy replaceable printing roller structure through the embodiment, including mutually matched roll core and roll cylinder, and the both ends of roll core are provided with roll shaft, wherein, the surface of roll core is provided with a plurality of first hole hole that points to the axial direction of roll core with roll cylinder contact, and the caliber of first hole hole far away from the axial direction of roll core is less than the caliber of first hole hole close to the axial direction of roll core, the bottom of first hole hole is provided with electromagnet, and the limiting convex tooth that can extend first hole hole is arranged in first hole hole, and the limiting convex tooth is made of magnetic metal, and the caliber of limiting convex tooth close to the axial end of roll core is greater than the caliber of first hole hole far away from the axial direction of roll core, the surface of roll cylinder is provided with a plurality of second hole hole corresponding with first hole hole with roll core contact, and the size of second hole hole is matched with the size of limiting convex tooth, and the permanent magnet is fixedly arranged in the inside of second hole hole, when limiting convex tooth rotates to the highest position with roll core, and electromagnet is closed, limiting convex tooth is attracted by permanent magnet magnetic field and extends first hole hole and goes into second hole hole and is pasted with permanent magnet. As long as when limiting convex tooth rotates to the highest position with roll core, and electromagnet is closed, limiting convex tooth extends first hole hole and goes into second hole hole and is pasted with permanent magnet, when limiting convex tooth rotates to other arbitrary position with roll core, limiting convex tooth will be pasted with permanent magnet, that is, can guarantee that roll core and roll cylinder are fixed through limiting convex tooth.

[0005] Further, the roll core, the roll cylinder and the roll shaft are made of non-magnetic material. Since the patent scheme uses the characteristics of mutual attraction between the magnet and the magnetic metal to fix the roll core and the roll cylinder, all the components except the components used for fixing are made of non-magnetic material to reduce the influence of the roll core, the roll cylinder and the roll shaft on the components used for fixing.

[0006] Further, the electromagnet includes a positive power supply wire and a negative power supply wire, one end of the roll core is provided with a positive terminal post and a negative terminal post, the positive power supply wire passes through the cavity in the roll core and is connected to the positive terminal post, and the negative power supply wire passes through the cavity in the roll core and is connected to the negative terminal post. The cavity is formed in the roll core to lay the power supply wire of the electromagnet.

[0007] Further, the limiting convex tooth is made of metal iron, and the end of the limiting convex tooth close to the electromagnet is larger than the end of the limiting convex tooth away from the electromagnet. Compared with other magnetic metals, metal iron can be better magnetized by the magnet, and the price is relatively low.

[0008] Further, the permanent magnet and the roll cylinder are fixed in the second hole hole by adhesion.

[0009] Further, the first hole is provided with elastic devices between the electromagnet and the limiting convex tooth, when the limiting convex tooth rotates to the elastic devices and the limiting convex tooth is not affected by the magnetic field of the permanent magnet or the electromagnet, the top of the limiting convex tooth is in the same horizontal plane with the contact surface of the roller core and the roller. When the limiting convex tooth rotates to the elastic devices and the limiting convex tooth is not affected by the magnetic force of the permanent magnet, the limiting convex tooth is completely pressed on the elastic devices, the elastic devices are compressed under force, once the limiting convex tooth is affected by the magnetic force of the permanent magnet, the limiting convex tooth is deep into the second hole, and then the roller core and the roller can be relatively fixed. The electromagnet is used when the limiting convex tooth is affected by the magnetic force of the permanent magnet, so that the electromagnet generates a magnetic field in the opposite direction of the permanent magnet and stronger than the magnetic field of the permanent magnet, so as to offset the magnetic force of the permanent magnet on the limiting convex tooth, and the roller is removed from the periphery of the roller core.

[0010] Further, the elastic devices include springs or elastic rubber blocks.

[0011] Beneficial effects: the utility model discloses an easy replacement printing roller structure, and the roller core and the roller are arranged separately, the roller with different patterns can be replaced according to requirements during use, the cost of producing the printing roller can be reduced, the manufacturing material can be saved, and the energy saving and emission reduction effect is achieved.

[0012] It should be noted that, in this paper, "first", "second", "left", "right" and similar terms are used only to describe the technical solutions of the elements, and do not constitute a limitation on the technical solutions, nor can they be understood as an indication or suggestion of the importance of the corresponding elements; the elements with "first", "second", "left", "right" and similar terms indicate that at least one element is included in the corresponding technical solution. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme of the utility model, and to facilitate the further understanding of the technical effect, technical features and purpose of the utility model, the utility model will be described in detail below with reference to the drawings, and the drawings constitute an essential part of the specification, and together with the embodiments of the utility model, they are used to illustrate the technical scheme of the utility model, but do not constitute a limitation on the utility model.

[0014] Figure 1 is a schematic view of the embodiment one of the utility model;

[0015] Figure 2 is a sectional view of the embodiment one of the utility model;

[0016] Figure 3 is Figure 2 is an enlarged view of A in the middle;

[0017] Figure 4A partial view of the elastic device added on the basis of the first embodiment of the utility model is shown in the figure.

[0018] Figure 5 For Figure 4 A front view of the middle partial part;

[0019] Figure 6 A circuit schematic diagram of the electromagnet in the utility model.

[0020] Wherein: 1-roller core, 2-roller, 3-roller shaft, 4-first hole, 5-electromagnet, 6-limit convex tooth, 61-elastic device, 7-second hole, 8-permanent magnet, 91-positive power supply line, 92-negative power supply line, 93-positive terminal post, 94-negative terminal post, 10-cavity, YA1-YA5 all represent electromagnet. Specific embodiments

[0021] The utility model will be further explained in detail in combination with the drawings and embodiments. Of course, the following specific embodiments are only for explaining the technical scheme of the utility model, and are not limited to the utility model. In addition, the part expressed in the embodiment or the drawing is only an example of the related part of the utility model, and is not the whole of the utility model. At the same time, all other embodiments obtained by the ordinary skilled in the art based on the embodiments of the utility model should certainly belong to the protection scope of the utility model.

[0022] Embodiment one:

[0023] As Figures 1-3The shown replaceable printing roller structure comprises a roller core 1 and a roller barrel 2 matched with each other, and roller shafts 3 arranged at both ends of the roller core 1, wherein a surface of the roller core 1 in contact with the roller barrel 2 is provided with five first holes 4 directed to the axial direction of the roller core 1, the diameter of the first holes 4 away from the axial center of the roller core 1 is smaller than the diameter of the first holes 4 close to the axial direction of the roller core 1, the bottom of the first holes 4 is provided with electromagnets 5, the first holes 4 are provided with limiting protruding teeth 6 capable of extending out of the first holes 4, the limiting protruding teeth 6 are made of magnetic metal, the diameter of the limiting protruding teeth 6 close to one end of the axial direction of the roller core 1 is greater than the diameter of the limiting protruding teeth 6 away from the axial center of the roller core 1; a surface of the roller barrel 2 in contact with the roller core 1 is provided with a plurality of second holes 7 corresponding to the first holes 4, the size of the second holes 7 is matched with the size of the limiting protruding teeth 6, and the second holes 7 are fixedly provided with permanent magnets 8 inside; when the limiting protruding teeth 6 rotate to the highest position along with the roller core 1 and the electromagnets are closed, the limiting protruding teeth 1 are attracted by the magnetic field of the permanent magnets 8 to extend out of the first holes 4 and go deep into the second holes 7 and adhere to the permanent magnets 8. As long as the limiting protruding teeth 6 extend out of the first holes 4 and go deep into the second holes 7 and adhere to the permanent magnets 8 when the limiting protruding teeth 6 rotate to the highest position along with the roller core 1 and the electromagnets 5 are closed, according to the force analysis of physics, the limiting protruding teeth 6 will adhere to the permanent magnets 8 when the limiting protruding teeth 6 rotate to any other position along with the roller core 1, that is, the roller core 1 and the roller barrel 2 can be fixed by the limiting protruding teeth 6.

[0024] It is worth noting that when the scheme of the patent is implemented, a power supply for the electromagnets 5 is also prepared, so that the electromagnets can be connected to the power supply at any time to replace the roller barrel.

[0025] In the embodiment, the roller core 1, the roller barrel 2 and the roller shafts 3 are all made of non-magnetic material, because the scheme of the patent uses the characteristics of the mutual attraction between the magnet and the magnetic metal to fix the roller core and the roller barrel, therefore, except for the components used for fixing, the remaining components are all made of non-magnetic material, so as to reduce the influence of the roller core, the roller barrel and the roller shafts on the components used for fixing.

[0026] As shown in Figs. Figure 2 , 3 and 6, in the embodiment, the electromagnets 5 comprise positive power supply wires 91 and negative power supply wires 92, one end of the roller core 1 is provided with positive and negative terminal posts 93 and 94, the positive power supply wires 91 pass through the cavity 10 in the roller core 1 and the positive terminal post 93 to be connected, and the negative power supply wires 92 pass through the cavity 10 in the roller core 1 and the negative terminal post 94 to be connected. In the embodiment, the cavity is opened in the roller core 1 to lay the power supply wires of the electromagnets

[0027] In the embodiment, the limiting protruding teeth 6 are made of metal iron, and the end of the limiting protruding teeth 6 close to the electromagnets 5 is greater than the end of the limiting protruding teeth 6 away from the electromagnets 5. Compared with other magnetic metals, the metal iron can be better magnetized by the magnet, and the price is relatively low.

[0028] In this embodiment, the permanent magnet 8 is fixed inside the second hole 7 by means of adhesion with the roller 2.

[0029] Embodiment two:

[0030] This embodiment is based on embodiment one, and an elastic device is added between the electromagnet 5 and the limiting tooth 6, as shown in Figure 4 、 5 In this embodiment, an elastic device 61 is also arranged between the electromagnet 5 and the limiting tooth 6 inside the first hole 4. When the limiting tooth 6 rotates with the roller core 1 to be directly above the elastic device 61 and the limiting tooth 6 is not affected by the magnetic force of the permanent magnet 8, the top end of the limiting tooth 6 is at the same level as the contact surface of the roller core 1 and the roller 2. When the limiting tooth 6 rotates with the roller core 1 to be directly above the elastic device 61 and the limiting tooth 6 is not affected by the magnetic field of the permanent magnet 8 or the electromagnet 5, the limiting tooth 6 is completely pressed above the elastic device 61, and the elastic device 61 is compressed under force. Once the limiting tooth 6 is affected by the magnetic force of the permanent magnet 8, it will be deep into the second hole 7, and then it can be relatively fixed with the roller core 1 and the roller 2. The electromagnet 5 is used when it is desired to affect the limiting tooth 6 without the magnetic force of the permanent magnet 8, so that the electromagnet 5 generates a magnetic field in the opposite direction of the permanent magnet 8 and stronger than the permanent magnet 8 to offset the magnetic force of the permanent magnet 8 on the limiting tooth 6, which is convenient for removing the roller 2 sleeved on the periphery of the roller core 1.

[0031] As shown in Figure 4 、 5 In this embodiment, the elastic device 61 is a spring.

[0032] Principle of use: in the normal use state, the electromagnet 5 is in the closed state and no magnetic field is generated. As described above, when the limiting protruding tooth 6 rotates to the highest position with the roller core 1 and the electromagnet 5 is closed, the limiting protruding tooth 6 extends out of the first hole 4 and goes deep into the second hole 7 and is in contact with the permanent magnet 8. When the limiting protruding tooth 6 rotates to any other position with the roller core 1, the limiting protruding tooth 6 will be in contact with the permanent magnet 8, that is, the roller core 1 and the roller 2 can be fixed through the limiting protruding tooth 6. When it is desired to remove the roller 2 and replace other rollers with different patterns, first rotate the limiting protruding tooth 6 to the highest position with the roller core 1, at this time the limiting protruding tooth 6 is subjected to the gravitational force, the vertically upward magnetic force and the vertically upward elastic force; then use the configured power supply to connect the positive terminal post 93 and the negative terminal post 94 respectively, so that the electromagnet 5 generates a magnetic field in the opposite direction and stronger than the permanent magnet 8 to offset the magnetic force of the permanent magnet 8 on the limiting protruding tooth 6, at this time the limiting protruding tooth 6 is subjected to the gravitational force, the vertically downward magnetic force and the vertically upward elastic force; since the limiting protruding tooth 6 is in the highest position and the limiting protruding tooth 6 is not subjected to the magnetic force of the permanent magnet 8, the top end of the limiting protruding tooth 6 is in the same horizontal plane as the contact surface of the roller core 1 and the roller 2, and at this time it also receives a vertically downward magnetic force, so at this time the limiting protruding tooth 6 is completely separated from the second hole 7, so the roller 2 can be removed from the roller core 1 to replace other rollers with different patterns.

[0033] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] It should be noted that the above examples are only for more clearly illustrating the technical scheme of the present application, and those skilled in the art can understand that the embodiments of the present application are not limited to the above content, and obvious changes, substitutions or replacements based on the above content do not exceed the scope of the technical scheme of the present application; other embodiments will also fall within the scope of the present application without departing from the concept of the present application.

Claims

1. A replaceable printing roller structure comprising a roller core and a roller sleeve which are fitted to each other, said roller core being provided with roller shafts at both ends thereof, characterized in that: The surface of the roller core in contact with the roller barrel is provided with a plurality of first holes directed to the axial direction of the roller core, the diameter of the first hole away from the axial direction of the roller core is smaller than the diameter of the first hole close to the axial direction of the roller core, the bottom of the first hole is provided with an electromagnet, the first hole is provided with a limiting protruding tooth which can extend out of the first hole, the limiting protruding tooth is made of magnetic metal, the diameter of the limiting protruding tooth close to one end of the axial direction of the roller core is larger than the diameter of the first hole away from the axial direction of the roller core; the surface of the roller barrel in contact with the roller core is provided with a plurality of second holes corresponding to the first holes, the size of the second hole matches the size of the limiting protruding tooth, the second hole is internally fixedly provided with a permanent magnet; when the limiting protruding tooth rotates to the highest position with the roller core and the electromagnet is turned off, the limiting protruding tooth is attracted by the magnetic field of the permanent magnet to extend out of the first hole and penetrate into the second hole and adhere to the permanent magnet.

2. The easy change print roller construction of claim 1 wherein: The roller core, the roller barrel and the roller shaft are all made of non-magnetic material.

3. The easy change print roller construction of claim 1 wherein: The electromagnet includes a positive power supply wire and a negative power supply wire, one end of the roller core is provided with a positive terminal post and a negative terminal post, the positive power supply wire passes through the cavity in the roller core and the positive terminal post to be connected, and the negative power supply wire passes through the cavity in the roller core and the negative terminal post to be connected.

4. The easy change print roller construction of claim 1 wherein: The limiting protruding tooth is made of metal iron, and the end of the limiting protruding tooth close to the electromagnet is larger than the end of the limiting protruding tooth away from the electromagnet.

5. The easy change print roller construction of claim 1 wherein: The permanent magnet and the roller barrel are fixed in the second hole by adhesion.

6. The easy change print roller construction of claim 1 wherein: The first hole is further provided with an elastic device between the electromagnet and the limiting protruding tooth, when the limiting protruding tooth rotates to the elastic device with the roller core and the limiting protruding tooth is not affected by the magnetic field of the permanent magnet or the electromagnet, the top end of the limiting protruding tooth is in the same horizontal plane with the contact surface of the roller core and the roller barrel.

7. The easy change print roller construction of claim 6 wherein: The elastic device includes a spring or an elastic rubber block.

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