CN107379114B

CN107379114B - Magnetic attraction type damping fin magnetizing and punching device and production process thereof

Info

Publication number: CN107379114B
Application number: CN201710751711.6A
Authority: CN
Inventors: 刘福; 潘乐; 窦正平; 傅昌宏
Original assignee: MAANSHAN LIANHONG SYNTHETIC MATERIALS CO Ltd
Current assignee: MAANSHAN LIANHONG SYNTHETIC MATERIALS CO Ltd
Priority date: 2017-08-28
Filing date: 2017-08-28
Publication date: 2023-04-18
Anticipated expiration: 2037-08-28
Also published as: CN107379114A

Abstract

The invention discloses a magnetizing and punching device for a magnetic damping fin and a production process of the magnetizing and punching device, and belongs to the technical field of automobile damping. The invention relates to a magnetizing and punching device for a magnetic absorption type damping fin, which comprises a magnetizing mechanism and a punching and cutting mechanism which are arranged according to working procedures; wherein: the magnetizing mechanism comprises a magnetizing frame, a magnetizing conveyor belt, a magnetizing roller and a pressing plate; two ends of the magnetizing roller are detachably and fixedly connected with the magnetizing frame; the two side ends of the pressing plate are also detachably and fixedly connected with the magnetizing frame; the punching and cutting mechanism comprises two supporting platforms at two sides of the punching and cutting conveyer belt, a punching platform which is horizontally placed and fixed on the inner side surfaces of the two supporting platforms, a lifting type height adjusting mechanism and the punching and cutting conveyer belt which penetrates through the punching and cutting mechanism to convey the magnetic absorption type damping pieces. The invention solves the problems of low cost, more harmful gases, high cost of substitutes, poor effective service life, untimely dehydration, serious rough edges during cutting and short service life of a conveyer belt of the asphalt damping plate.

Description

Magnetic suction type damping fin magnetizing and punching device and production process thereof

Technical Field

The invention relates to the technical field of automobile damping, in particular to a magnetizing and punching device for a magnetic damping sheet and a production process thereof.

Background

Vibration damping materials are widely used in automotive applications to dampen road noise and engine vibration and sound. Viscoelastic materials are preferred for the damping material. The damping effect associated with the energy dissipated in the viscoelastic material increases with the amount of young's modulus and the loss tangent of the viscoelastic material. It also increases, of course, with the deformation to which the material is subjected. Some materials have a high loss factor but low young's modulus which provides limited damping to the metal plate, others have a high young's modulus but lower loss factor (e.g., rubber) which is also not very good for use as a damping member. Good damping materials provide a compromise between young's modulus and loss factor.

At present, most automobiles adopt a traditional asphalt damping plate, and asphalt is a brownish black organic gelatinous substance and comprises four substances, namely natural asphalt, petroleum asphalt, shale asphalt, coal tar asphalt and the like. Asphalt and the smoke thereof mainly contain phenols and compounds, asphalt and the smoke thereof mainly contain phenols, compounds, anthracene, naphthalene, pyridine and the like, which have irritation to skin mucosa, and asphalt damping plates have strong carcinogenic effect on human bodies, which can harm the health of people, so that how to reduce the influence of the harmful components is a constant subject faced by technical personnel.

To the type damping fin of magnetism absorption by good damping material preparation, the cooling and the punching press cutting device of needs adaptation because the damping fin that general cutting device cut often has deckle edge, moreover, when cutting to the damping fin that the viscoelasticity is good, often still can cause the damage and influence its life to the belt.

Through retrieval, chinese patent application, publication number: CN105602233A, published: 2016.05.25 discloses an economic and environment-friendly damping plate with high damping performance, which comprises the following raw materials: the anti-aging coating comprises a polyurethane elastomer, fly ash, mica, hydrogenated C5 petroleum resin, glass fiber, carbon black, an anti-aging agent and an antioxidant, and the mass ratio of the anti-aging coating is as follows: 200-250;410-500;400-475; 40-80;4-10;20-100 parts of; 5;5, the waste fly ash is used as the functional shock absorption filler, waste materials are changed into valuable materials, the environment-friendly polyurethane is used for replacing harmful asphalt, energy is saved, emission is reduced, the environment is protected, the production cost is low, the period is short, the production process is scientific, the manufacturing is convenient, the product has good shock absorption and sound insulation effects, the damping coefficient is high, and the ageing resistance is strong. However, polyurethanes are block copolymers and have poor binding to other materials such as mica (hard block), petroleum resins (soft block), etc., and tend to delaminate, resulting in a short useful life.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention provides a magnetizing and punching device for a magnetic damping sheet and a production process thereof, aiming at the problems of low cost, more harmful gases, high substitute cost, poor effective service life, untimely dehydration, serious rough edges during cutting and short service life of a conveying belt of an asphalt damping sheet in the prior art. The water on the surface of the damping plate is squeezed out through the arrangement of the pressing plate, the consumption of asphalt in batches in the damping plate batching process is reduced, other batching processing methods are optimized, and the purpose of reducing the use risk of the damping plate is achieved; and the purpose of no burrs when the magnetic suction type damping fin is cut is achieved through cooling and all-dimensional adaptability adjustment of the cutting die.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

a magnetic suction type damping fin magnetizing and punching device comprises a magnetizing mechanism, an air cooling mechanism and a punching and cutting mechanism which are arranged according to working procedures; wherein: the magnetizing mechanism comprises a magnetizing frame, a magnetizing conveyor belt, a magnetizing roller and a pressing plate, wherein the magnetizing conveyor belt is flatly paved on the surface of the magnetizing frame in a reciprocating manner; two ends of the magnetizing roller are detachably and fixedly connected with the magnetizing frame and are suspended above the magnetizing conveyor belt; the two side ends of the pressing plate are also detachably and fixedly connected with the magnetizing frame, the front end of the pressing plate is close to the magnetizing roller, a gap through which the magnetic absorption type damping sheet can pass is reserved, and the pressing plate can extrude and dehydrate cooling water on the surface of the magnetic absorption type damping sheet to lay a foundation for surface water absorption and drying in the next step; the air cooling mechanism comprises an air cooling box, a blower and an air cooling conveying belt; a blower is fixed in the air cooling box and is buckled right above the air cooling conveying belt; the tail end of the air-cooled conveying belt is connected with the punching conveying belt through the magnetic absorption type damping sheet during conveying, the magnetic absorption type damping sheet is transferred to the punching conveying belt, and the magnetic absorption type damping sheet is cooled and then punched through the air-cooled mechanism, so that the adhesion of the magnetic absorption type damping sheet to the sheet during punching is reduced, and the generation of rough edges is avoided as much as possible; the punching and cutting mechanism comprises two supporting platforms at two sides of the punching and cutting conveyer belt, a punching platform and a lifting type height adjusting mechanism which are horizontally arranged and fixed on the inner side surfaces of the two supporting platforms, and the punching and cutting conveyer belt which penetrates through the punching and cutting mechanism and conveys the magnetic absorption type damping sheet; punching press platform passes through over-and-under type height control mechanism and connects punching press platform bottom demountable installation's cutting die, carries out the adaptability through over-and-under type height control mechanism to the die-cut height and the thickness of cutting die and adjusts, after acting on the type damping fin is inhaled to magnetism, can shorten the lift stroke to avoid die-cut excessive and hindering the conveyer belt.

According to the further technical scheme, the number of the pressing plates is 2, the pressing plates are arranged on two sides of the magnetizing roller in an inverted V shape, water is pressurized on two sides, and efficiency is improved; the upper part of the air cooling box is an open opening, and a separation net is fixedly connected in the opening to prevent foreign matters from falling into the blower; the magnetic absorption type damping fin is directly blown downwards by the air of the blower, so that the firmness of the hot-drying film is ensured while the cooling is carried out; the lifting height adjusting mechanism is 4 lifting screw rods symmetrically arranged at four corners of the punching table, and lifting can be adjusted in a four-corner balanced manner so as to ensure balance of a punching surface; the bottom of the front end of the punching conveying belt is provided with a damping sheet sensing mechanism, when no damping sheet passes through, the damping sheet sensing mechanism can inform the control mechanism to stop punching, and the conveying belt is prevented from being damaged by the empty cutting of the cutting die.

According to a further technical scheme, the stamping and cutting mechanism further comprises 2 cutting die width adjusting mechanisms which are respectively arranged on the front side and the rear side of the stamping platform and are used for punching right above the conveying belt, corresponding adjustment is carried out according to the specifications of the cutting dies, and the universality of the device is improved; the magnetizing mechanism also comprises a plurality of water suction rollers, two ends of the water suction rollers are fixed on the magnetizing frame, the water suction rollers are symmetrically arranged on the magnetizing conveying belt, and gaps are reserved between the water suction rollers and the magnetizing conveying belt; the bottom of the magnetizing conveyor belt is also provided with a carrier roller which is matched with a pressing plate to suck the extruded water.

According to the further technical scheme, the cutting die width adjusting mechanism comprises an air cylinder, a screw rod, a ball type width adjusting frame, a positioning frame, a cutting die bearing fixing frame and a screw hole block, wherein the ball type width adjusting frame is fixed on the side face of the punching table; the screw rod penetrates through the ball type width adjusting frame and extends towards the left end and the right end by taking the ball type width adjusting frame as a center, threads of the left part and the right part are arranged in a reverse mode, and two ends of the screw rod respectively penetrate through respective screw hole blocks; each screw hole block is fixed in the corresponding cutting die bearing fixing frame; the utility model discloses a cutting die width adjustment mechanism, including positioning frame, cutting die, cylinder, telescopic link, screw hole piece, whole cutting die width adjustment mechanism convenient operation, location are accurate, and to the cutting die omnidirectional location with fixed, the production of deckle edge has been reduced as far as possible during die-cut to the damage of blade to the conveyer belt has further been avoided to positioning frame is downwardly opening's frame shape, and the back-off accepts the top of mount in the cutting die, and positioning frame's top sets up the cylinder, telescopic link in the cylinder passes positioning frame and cutting die and accepts the mount after, acts on the screw hole piece, whole cutting die width adjustment mechanism convenient operation, and the location is accurate.

According to the further technical scheme, the cutting die comprises a substrate and a blade fixedly connected to the substrate; a sponge layer which is as thick as the blades and is fixed on the base plate is paved around the blades, when in punching, the blades can be cleaned, and a small amount of lubricating oil can be sprayed in the sponge layer to keep the blade edges clean and lubricated, so as to further reduce the generation of rough edges; the cutting die bears the bottom of the fixing frame, and a clamping groove for clamping the cutting die is formed in the cutting die, so that the cutting die is conveniently clamped, and the cutting die is more conveniently replaced; the die-cut conveyer belt has the breaking strength of more than 20Mpa and the breaking elongation of more than 400 percent, and is suitable for the magnetic absorption type damping sheet.

A production process of a magnetizing and punching device for a magnetic damping fin comprises the following steps:

step one, preparing magnetic damping fins: the components comprise 300 to 400 weight portions of magnetic powder, 200 to 300 weight portions of calcium powder, 70 to 80 weight portions of asphalt, 65 to 75 weight portions of mica powder, 30 to 50 weight portions of asphalt modifier, 8 to 12 weight portions of softener and 3 to 5 weight portions of fiber; the calcium powder is superfine light calcium powder with the particle size of 0.5-1 mu m; after the magnetic powder is magnetized, the magnetic powder is matched with the pressing plate, so that the extrusion efficiency of the pressing plate can be improved; in the ingredients, the consumption of the asphalt is only less than 10%, when the asphalt is applied to an automobile, the generation of harmful gases is greatly reduced, and after the asphalt is applied, the harmful gases are ventilated and removed for a period of time, and most of residual odor is removed, so that the use risk of the damping plate is reduced. The softened asphalt of the superfine light calcium powder is matched for use, so that the bonding strength with the asphalt can be improved (the bonding force with the asphalt is improved through the polymerization capacity of the superfine powder), and the layering in the use process after tabletting is avoided;

step two, production of the magnetic absorption type damping sheet blank:

1. asphalt softening: adding asphalt into a kneader, heating, softening and stirring to obtain fluid;

2. stirring: sequentially adding the asphalt modifier and the softener into a kneader for stirring;

3. fiber crushing: in the stirring process of the step (2), crushing the fibers, and then putting the fibers into a kneader to continue stirring;

4. adding calcium powder: adding calcium powder, magnetic powder and mica powder into a kneading machine and continuously stirring;

5. extruding: after stirring, transferring the mixture into an extruder for extrusion and pressing the mixture into a magnetic absorption type damping sheet by using double rollers;

step three, magnetizing: magnetizing the magnetic absorption type damping fin through a magnetizing mechanism;

step four, cooling: after film coating and hot drying and shaping are carried out on the magnetic absorption type damping fin, the magnetic absorption type damping fin is transferred into an air cooling box through an air cooling conveying belt, a blower is started, and air cooling type cooling is carried out on the magnetic absorption type damping fin in the conveying process;

step five, transferring: the air-cooled conveying belt conveys the magnetic absorption type damping fins to the punching conveying belt;

step six, punching: starting the punching conveyer belt to bring the magnetic damping sheet below the cutting die;

1. placing a cutting die: placing the cutting die between two opposite 4 cutting die bearing fixing frames;

2. width adjustment: rotating the round handle of the ball type width adjusting frame, and driving the cutting die bearing fixing frame to move oppositely by the lead screws with the reverse threads at the two ends until the two side ends of the cutting die are clamped tightly;

3. starting the air cylinder: starting the air cylinder, wherein the telescopic rod of the air cylinder drives the cutting die to bear the fixed frame to ascend until the upper surface of the cutting die is in close contact with the bottom end of the lifting screw rod;

4. thickness adjustment: the cutting thickness of the magnetic absorption type damping sheet is adjusted by rotating the lifting screw rod;

5. the stamping and cutting mechanism is started: the punching and cutting mechanism sets up upper and lower punching frequency by combining a numerical control cabinet with the conveying speed of a punching conveying belt, and punches the magnetic absorption type damping sheet into a single damping sheet.

The further production process comprises the following steps of:

1. and (3) generation of reactants: carrying out double decomposition reaction on sodium carbonate and calcium chloride to generate calcium carbonate precipitate, and filtering to obtain calcium carbonate coarse powder;

2. mixing: fully mixing calcium carbonate coarse powder, a dispersing agent and water to form a freeze-dried precursor;

3. quick-freezing: spreading the freeze-dried precursor into a mould, and then placing the mould into a quick-freezing warehouse to quickly freeze into blocks;

4. freeze-drying: pushing the block-shaped material into a freeze-drying bin for freeze-drying to form a honeycomb-shaped block material;

5. fine grinding: and (3) feeding the honeycomb block material into a grinder to be finely ground into superfine light calcium powder.

The powder prepared by the freeze-drying process has a light and crisp cellular structure because the small particles and the formed block bodies can be light and crisp cellular structures, so that the grinding cost is reduced for preparing the ultrafine powder.

The further production process, wherein the quick-freezing temperature in the step one (3) is-38 to-40 ℃; the process curve of the freeze-drying is as follows:

A. a temperature rise period: the plate temperature is 0-100 ℃, the temperature rising slope is 5 ℃/min, the temperature is kept at 100 ℃ for 20-30 minutes, and the vacuum is pumped to be within 100 Pa;

B. and (3) a heat preservation period: the temperature of the plate is reduced to 80-85 ℃/min, the plate is kept for 30-40 minutes, and the vacuum is controlled within 80 Pa;

C. and (3) later stage: the temperature of the plate is reduced to 60-70 ℃/min, the temperature is kept for 40-60 minutes, and the vacuum is controlled within 50 Pa.

In the further production process, the asphalt modifier and/or the softener are uniformly mixed and added in the mixing step of the first step and the second step, and then quick-freezing is carried out, so that the components are quickly positioned, and layering is avoided; the amount of the added water is 2.5 to 3.0 times of the total weight of the coarse powder so as to achieve the purpose of full absorption and mixing; the thickness of the material paved into the die is 5.0-6.0 cm, and the tray loading amount is increased; in the freeze-drying process of the 4 steps in the first step, the temperature of the cold trap is controlled below-30 ℃, and the purpose of effectively capturing water can be achieved.

In the step two, the stirring time of the step 1 and the step 1 is 5 to 10 minutes; step 2, stirring for 10-20 minutes; step 3, crushing the powder with the granularity of less than 20 meshes; and step 4, stirring for 30-40 minutes.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) According to the magnetizing and punching device for the magnetic absorption type damping fin, the pressing plate can magnetize the magnetic absorption type damping fin and squeeze cooling water on the plate surface of the punching device for dehydration, and a foundation is laid for plate surface water absorption and drying in the next step; the number of the pressing plates is 2, the pressing plates are obliquely and symmetrically arranged in a splayed shape on two sides of the magnetizing roller, water is pressed on two sides, and the efficiency is improved; the punching height and thickness of the cutting die are adaptively adjusted through the lifting height adjusting mechanism, and after the magnetic suction type damping sheet is acted, the lifting stroke can be shortened, and the damage to a conveying belt caused by excessive punching is avoided; in the ingredients of the magnetic damping sheet subjected to die cutting, the consumption of asphalt only accounts for less than 9% of the total weight, when the magnetic damping sheet is applied to an automobile, harmful gas is greatly reduced in a limited space of the automobile, most of residual smell is removed through ventilation for a period of time after the application, the use risk of the damping sheet in the automobile can be greatly reduced, and the magnetic damping sheet subjected to die cutting has good viscoelastic property, so that burrs can be avoided in the die cutting process;

(2) According to the magnetizing and punching device for the magnetic absorption type damping sheet, the water absorption roller and the pressing plate are matched to absorb the extruded water; the conveying belt can be provided with evenly distributed through holes, so that the magnetizing of the magnetic damping sheet and the drying of the punching device are facilitated; the magnetic absorption type damping fin is directly blown downwards by the air direction of the blower, so that the firmness of the hot drying coating film is ensured while the cooling is carried out; 4 lifting screws are used for balancing and adjusting lifting at four corners of the stamping table so as to ensure the balance of the stamping surface; the damping sheet sensing mechanism is arranged, when no damping sheet passes through, the control mechanism can be informed to stop punching, and the cutter die is prevented from idle cutting to damage the conveying belt; in addition, the magnetic absorption type damping fin punched and processed by the invention uses superfine heavy calcium powder and superfine light calcium powder, the two superfine calcium powders are matched with the softened asphalt for use, the bonding strength with the asphalt can be improved (the bonding force with the asphalt is improved through the polymerization capability of the superfine powder), and the lamination in the using process after extrusion tabletting and punching is avoided;

(3) According to the magnetizing and punching device for the magnetic absorption type damping sheet, disclosed by the invention, in the ingredients, the using amount of asphalt only accounts for less than 10% of the total weight, when the device is applied to an automobile, the generation of harmful gas is greatly reduced in a limited space of the automobile, most of residual smell is removed through ventilation for a period of time after the device is applied, and the use risk of the damping sheet in the automobile can be greatly reduced; the ultrafine light calcium powder is matched with the softened asphalt for use, so that the bonding strength with the asphalt can be improved (the bonding force with the asphalt is improved through the polymerization capacity of the ultrafine powder), and extrusion tabletting and layering in the using process are avoided; the corresponding adjustment can be carried out according to the specification of the cutting die, so that the universality of the device is improved; in addition, the powder prepared by the freeze-drying process in the manufacturing of the magnetic absorption type damping fin has a light and crisp cellular structure due to the small particles and the formed block bodies, and the cost is greatly reduced when the powder is ground into superfine micro powder;

(4) According to the magnetizing and punching device for the magnetic absorption type damping fin, the powder prepared by the freeze-drying process can be in a light and crisp honeycomb structure due to small particles and formed blocks, and the cost is greatly reduced when the powder is ground into superfine micro powder;

(5) According to the magnetizing and punching device for the magnetic absorption type damping fin, in the preparation process of the ultrafine light calcium powder, free water and less bound water are mainly added, so that compared with freeze-drying of food and drugs, the freeze-drying cost is relatively low in the freeze-drying process, and the yield of freeze-dried food is generally below 10%, and the freeze-drying preparation of the ultrafine light calcium powder can reach 50% or even more than 80%; the whole cutting die width adjusting mechanism is convenient to operate and accurate in positioning, the cutting die is positioned and fixed in an all-dimensional manner, burrs are reduced as far as possible during punching, and damage of blades to a conveying belt is further avoided;

(6) According to the magnetizing and punching device for the magnetic absorption type damping sheet, during freeze-drying production of the ultrafine light calcium powder, commercial light calcium powder can be used for secondary freeze-drying processing, the cost is doubled at most and is lower than that of common asphalt, so that the ultrafine light calcium powder replaces part of asphalt, the manufacturing cost is reduced, harmful gas can be reduced, and the ultrafine light calcium powder is matched with mica powder, so that the bonding strength with the asphalt is improved (effective bonding of organic matters and inorganic matters is achieved); the clamping groove can facilitate the clamping of the cutting die and the replacement; the magnetic suction type damping sheet needs a special conveying belt when being punched, has the tensile strength of more than 20Mpa and the tensile elongation of more than 400 percent, and combines the two aspects to achieve the purposes of no raw edge punching and long service life of the conveying belt;

(7) The magnetizing and punching device for the magnetic absorption type damping fin, disclosed by the invention, has the advantages that the temperature is-38 to-40 ℃ and the quick-freezing temperature are determined by combining the properties of calcium powder, when the temperature is too high, the penetration capability of ice crystals to particles is poor, and micropores generated after freeze-drying are shallow and few; when the amount is too low, although the depth and the number of micropores can be increased, the production cost is greatly increased; the freeze-drying curve is designed in a targeted manner by combining the property of more free water, the whole freeze-drying process is about 2 hours, and the freeze-drying cost is low;

(8) According to the magnetic attraction type damping fin magnetizing and punching device, the asphalt modifier and/or the softening agent are mixed and added, and the asphalt modifier and/or the softening agent can be freeze-dried and positioned around micro powder, so that the combination with asphalt in the later stirring process is improved, the effects of the asphalt modifier and/or the softening agent can be rapidly expanded, the time of the whole processing technology is shortened, and the aging of the asphalt in the stirring process is avoided;

(9) According to the production process of the magnetizing and punching device for the magnetic absorption type damping fin, compared with the conventional production method, the stirring time is greatly reduced, so that the production cost is reduced, and the production efficiency is improved; and through the omnidirectional adjustment and fixation of the cutting die, the punching frequency can be improved, so that the production cost is reduced, the production efficiency is improved, and no rough edge is punched.

Drawings

FIG. 1 is a schematic structural view of a magnetizing mechanism in the magnetic damping fin magnetizing and punching device according to the present invention;

FIG. 2 is a schematic view of an air cooling mechanism and a punching and cutting mechanism in the magnetizing and punching device of the magnetic damping fin of the present invention;

FIG. 3 is an enlarged schematic structural view of a cutting die width adjustment mechanism according to the present invention;

fig. 4 is a top view of the cutting die of the present invention.

In the figure: 6. a magnetizing mechanism; 8. a stamping and cutting mechanism; 9. punching a conveying belt; 10. a magnetic suction type damping fin; 61. a magnetizing rack; 62. magnetizing the conveyor belt; 64. a magnetizing roller; 65. a suction roll; 66. pressing a plate; 611. a carrier roller; 81. cutting the die; 82. a support platform; 83. a stamping station; 84. a lifting height adjusting mechanism; 85. a cutting die width adjusting mechanism; 87. a damper sensing mechanism; 88. Compressing the air pipe; 811. a blade; 812. a sponge layer; 851. a cylinder; 852. a lead screw; 853. a ball type width adjusting bracket; 854. A positioning frame; 855. the cutting die is connected with the fixing frame; 856. a screw hole block; 8551. a clamping groove.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.

Example 1

The magnetic damping sheet magnetizing and punching device comprises a magnetizing mechanism 6 and a punching and cutting mechanism 8 which are arranged according to working procedures; wherein: as shown in fig. 1, the magnetizing mechanism 6 comprises a magnetizing frame 61, a magnetizing conveyor belt 62, a magnetizing roller 64 and a pressing plate 66, wherein the magnetizing conveyor belt 62 is flatly paved on the surface of the magnetizing frame 61 in a reciprocating manner; two ends of the magnetizing roller 64 are detachably and fixedly connected with the magnetizing frame 61 and are suspended above the magnetizing conveyor belt 62; the two side ends of the pressing plate 66 are also detachably and fixedly connected with the magnetizing frame 61, the front end of the pressing plate 66 is close to the magnetizing roller 64, a gap through which the magnetic absorption type damping fin 10 can pass is reserved, and the pressing plate 66 can extrude and dehydrate cooling water on the surface of the magnetic absorption type damping fin to lay a foundation for surface water absorption and drying in the next step; as shown in fig. 2, the punching and cutting mechanism 8 includes two supporting platforms 82 at two sides of the punching and cutting conveyor belt 9, a punching platform 83 and a lifting height adjusting mechanism 84 which are flatly placed and fixed at inner side surfaces of the two supporting platforms 82, and the punching and cutting conveyor belt 9 which passes through the punching and cutting mechanism 8 and conveys the magnetic damping sheet 10; the punching platform 83 is connected with the cutting die 81 detachably mounted at the bottom of the punching platform 83 through the lifting height adjusting mechanism 84, the punching height and the thickness of the cutting die 81 are adaptively adjusted through the lifting height adjusting mechanism 84, and after the cutting die acts on the magnetic absorption type damping sheet 10, the lifting stroke can be shortened, and the phenomenon that the conveying belt is damaged due to excessive punching is avoided.

The production process of the magnetizing and punching device for the magnetic damping fin comprises the following steps:

step one, batching of the magnetic absorption type damping fin: the components comprise 300 kg of magnetic powder, 300 kg of calcium powder, 70 kg of mica powder, 80 kg of AH-80 asphalt, 30 kg of asphalt modifier (such as SBS styrene and EVA ethylene-vinyl acetate copolymer), 8 kg of softener (such as vegetable oil, rubber oil, rolling glue oil and the like), and 5 kg of fiber such as fibrilia and aramid fiber. The calcium powder is superfine light calcium powder with the particle size of 0.5-1 mu m; after the magnetic powder is magnetized, the magnetic powder is matched with the pressing plate 66, so that the extrusion efficiency of the pressing plate 66 can be improved; in the ingredients, the consumption of the asphalt is only less than 10%, when the asphalt is applied to an automobile, the generation of harmful gases is greatly reduced, and after the asphalt is applied, the harmful gases are ventilated and removed for a period of time, and most of residual odor is removed, so that the use risk of the damping plate is reduced. The asphalt after the superfine light calcium powder is softened is matched for use, so that the bonding strength with the asphalt (the bonding force with the asphalt is improved through the polymerization capacity of the superfine powder) can be improved, and the layering in the use process after tabletting is avoided.

Step two, production of the magnetic absorption type damping sheet blank:

1, asphalt softening: putting AH-80 asphalt into a kneader, heating to about 100 ℃ for softening, and stirring into fluid; (ii) a

2, stirring: sequentially adding SBS and vegetable oil into a kneader and stirring for 10 minutes;

3, fiber crushing: in the stirring process of the step 2, after the fibrilia is crushed to 16 meshes, putting the fibrilia into a kneader and continuously stirring for 20 minutes;

4, adding calcium powder: adding calcium powder, magnetic powder and mica powder into a kneading machine and continuously stirring;

5, extruding: after stirring, transferring the mixture into an extruder for extrusion and pressing the mixture into a magnetic absorption type damping fin 10 by using double rollers;

step three, magnetizing: magnetizing the magnetic absorption type damping fins 10 through a magnetizing mechanism 6; in the magnetizing process, the starting end of the magnetic damping fin 10 is lapped on the magnetizing roller 64, and continuously moves after passing through a gap formed by the front end of the pressing plate 66 and the magnetizing roller 64 under the transmission action of the magnetizing conveyor belt 62; after the magnetic damping sheet 10 is magnetized on the magnetizing roller 64, magnetic force is generated between the magnetic damping sheet 10 and the pressing plate 66 made of cast iron, the magnetic damping sheet is tightly attached to the pressing plate 66, and cooling water on the magnetic damping sheet 10 is squeezed out, so that a foundation is laid for next water absorption and drying;

step four, cooling: after the magnetic absorption type damping fin 10 is subjected to film covering and hot drying setting, the magnetic absorption type damping fin is transferred into an air cooling box through an air cooling conveying belt, a blower is started, and in the conveying process, the magnetic absorption type damping fin 10 is subjected to air cooling type cooling;

step five, transferring: the air-cooled conveyer belt conveys the magnetic damping sheet 10 to the punching conveyer belt 9;

step six, punching: starting the punching conveyer belt 9 to bring the magnetic damping piece 10 below the cutting die 81;

1. the cutting die 81 is put in: the cutting die 81 is placed between two opposite 4 cutting die receiving fixing frames 855;

2. width adjustment: the round handle of the ball type width adjusting frame 853 is rotated, and the lead screws 852 with reversed threads at the two ends drive the cutting die receiving fixing frame 855 to move oppositely until the two side ends of the cutting die 81 are clamped tightly;

3. starting the air cylinder: starting the air cylinder 851, enabling high-pressure air to act through the compressed air pipe 88 to drive the cutting die receiving fixing frame 855 to ascend until the upper surface of the cutting die 81 is in close contact with the bottom end of the lifting screw;

4. thickness adjustment: the cutting thickness of the magnetic absorption type damping fin 10 is adjusted by rotating the lifting screw rod;

5. the stamping and cutting mechanism is started: the punching and cutting mechanism 8 sets up the upper and lower punching frequency by combining the transmission speed of the punching and conveying belt 9 through the numerical control cabinet thereof, and punches the magnetic absorption type damping sheet 10 into a single damping sheet for transportation tools such as automobiles and the like.

In the punching process of the magnetic absorption type damping piece 10, the magnetic absorption type damping piece 10 is cooled by the air cooling mechanism and then punched, so that the adhesion of the magnetic absorption type damping piece 10 to the blade is reduced during punching, and burrs are avoided as much as possible; the lifting height adjusting mechanism 84 is used for adaptively adjusting the punching height and thickness of the cutting die 81, and after the magnetic damping sheet 10 is acted, the lifting stroke can be shortened, and the damage to a conveying belt due to excessive punching is avoided; moreover, in the batching of the magnetic absorption type damping fin 10, the consumption of asphalt only accounts for about 9%, when the punched damping fin is applied to an automobile, the generation of harmful gas is greatly reduced, and most residual odor is removed after the damping fin is applied through ventilation for a period of time, so that the use risk of the damping plate is reduced.

Example 2

The magnetic damping fin magnetizing and punching device of the embodiment has the same basic structure and the same ingredients as those of the embodiment 1, and has the following different and improved parts: the number of the pressing plates 66 is 2, the pressing plates are obliquely and symmetrically arranged in a splayed shape on two sides of the magnetizing roller 64, water is pressed on two sides, and the efficiency is improved; the lifting height adjusting mechanism 84 is 4 lifting screws symmetrically arranged at four corners of the stamping table 83, and can lift and descend in a balanced manner at four corners so as to ensure the balance of the stamping surface; the bottom of the front end of the punching conveying belt 9 is provided with a damping sheet sensing mechanism 87, when no damping sheet passes through, the damping sheet sensing mechanism can inform a control mechanism to stop punching, and the conveying belt is prevented from being damaged by the empty cutting of a cutting die.

step one, preparing magnetic damping fins: the ingredients of the magnetic absorption type damping fin 10 comprise 400 kg of magnetic powder, 200 kg of superfine light calcium powder with the particle size of 0.5-1 mu m, 70 kg of mica powder, 70 kg of AH-90 asphalt, 40 kg of asphalt modifier (such as SBS styrene and EVA ethylene-vinyl acetate copolymer), 12 kg of softener such as vegetable oil, rubber oil, rolling glue oil and the like, and 3 kg of fiber such as fibrilia and aramid fiber.

Step two, production of the magnetic absorption type damping sheet blank:

1. asphalt softening: putting AH-90 asphalt into a kneader, heating to about 110 ℃ for softening, and stirring into fluid;

2. stirring: sequentially adding EVA and rubber oil into a kneader and stirring for 10 minutes;

3. fiber crushing: in the stirring process of the step 2, after the fibrilia is crushed to 20 meshes, putting the fibrilia into a kneader and continuously stirring for 20 minutes;

5. extruding: after stirring, transferring the mixture into an extruder for extrusion and pressing the mixture into a magnetic damping sheet 10 by using a pair of rollers;

step three, magnetizing: magnetizing the magnetic absorption type damping fins 10 through a magnetizing mechanism 6; in the magnetizing process, the starting end of the magnetic damping fin 10 is lapped on the magnetizing roller 64, and continuously moves after passing through a gap formed by the front end of the pressing plate 66 and the magnetizing roller 64 under the transmission action of the magnetizing conveyor belt 62; after the magnetic absorption type damping sheet 10 is magnetized on the magnetizing roller 64, magnetic force is generated between the magnetic absorption type damping sheet 10 and the pressing plate 66 made of cast iron, the magnetic absorption type damping sheet is tightly attached to the pressing plate 66, cooling water on the magnetic absorption type damping sheet 10 is extruded out, and a foundation is laid for next water absorption and drying;

step four, cooling: the magnetic damping fin 10 is coated with a film, baked and shaped, and then cooled by an air cooling mechanism;

2. width adjustment: the round handle of the ball type width adjusting frame 853 is rotated, and the screw rods 852 with reverse threads at the two ends drive the cutting die bearing fixing frame 855 to move oppositely until the two side ends of the cutting die 81 are clamped tightly;

3. starting the air cylinder: starting the air cylinder 851, wherein the telescopic rod of the air cylinder drives the cutting die bearing fixing frame 855 to ascend until the upper surface of the cutting die 81 is in close contact with the bottom end of the lifting screw rod;

5. the stamping and cutting mechanism is started: the punching and cutting mechanism 8 sets up the upper and lower punching frequency by combining the transmission speed of the punching and cutting conveyer belt 9 through the numerical control cabinet thereof, and punches the magnetic absorption type damping sheet 10 into a single damping sheet

The magnetic damping sheet magnetizing and punching device has the advantages that the ultrafine calcium powder and the softened asphalt are matched for use, so that the bonding strength of the damping sheet and the asphalt can be improved (the bonding strength of the damping sheet and the asphalt is improved through the polymerization capacity of the ultrafine powder), and the lamination in the using process after the sheet pressing is avoided. However, the grinding cost of the two superfine calcium powders is high, which results in the increase of the production cost.

Example 3

The magnetic damping fin magnetizing and punching device of the embodiment has the same basic structure and ingredients as those of the embodiment 2, and has the following difference and improvement points: the punching and cutting mechanism 8 also comprises 2 cutting die width adjusting mechanisms 85 which are respectively arranged at the front side and the rear side of the punching table 83 and are right above the punching conveying belt 9, corresponding adjustment is carried out according to the specifications of the cutting dies, and the universality of the device is improved; the magnetizing mechanism 6 also comprises a plurality of water absorbing rollers 65, two ends of which are fixed on the magnetizing frame 61, symmetrically arranged on the magnetizing conveyor belt 62 and provided with gaps with the magnetizing conveyor belt 62; the bottom of the magnetizing conveyor belt 62 is also provided with a carrier roller 611, and the pressing plate 66 is matched to suck the extruded water.

The ingredients prepared in the first step comprise 350 kg of magnetic powder and 250 kg of ultrafine light calcium powder with the particle size of 0.5-1 mu m; 70 kg of mica powder, 70 kg of asphalt, 30 kg of asphalt modifier (such as SBS styrene or EVA ethylene-vinyl acetate copolymer), 8 kg of softener such as vegetable oil, rubber oil, rolling glue oil and the like, 4 kg of fiber such as fibrilia and aramid fiber, wherein: the processing steps of the superfine light calcium powder are as follows:

step one, mixing: fully mixing commercially available light calcium powder, a dispersing agent and water to prepare a freeze-dried precursor;

step two, quick freezing: spreading the freeze-dried precursor in a mold, and quickly freezing the mold in a quick-freezing warehouse at the temperature of between-38 and-40 ℃ to form blocks;

step three, freeze-drying: pushing the block-shaped material into a freeze-drying bin for freeze-drying to form a honeycomb-shaped block material;

step four, fine grinding: and (3) feeding the honeycomb block material into a grinding machine for fine grinding until the mica powder is ultrafine light calcium powder.

The processing method of the magnetic damping sheet blank comprises the following steps:

4. adding calcium powder: adding the ultrafine light calcium powder, the mica powder and the magnetic powder which are prepared by freeze-drying into a kneader and continuously stirring for 10 minutes;

5. extruding: after stirring, transferring the mixture into an extruder for extrusion and tabletting by using double rollers to generate the damping sheet.

The magnetic absorption type damping fin magnetizing and punching device has the advantages that the superfine light calcium powder prepared by grinding after freeze-drying is more tightly combined with asphalt, softening agent and modifier fluid due to micropores or micro pits on the surface of the superfine light calcium powder, the combination strength is greatly improved on the premise of greatly reducing the asphalt using amount, the damping coefficient is correspondingly improved, and the magnetic absorption type damping fin magnetizing and punching device has good damping, sound insulation and heat preservation effects.

Example 4

The magnetism type damping fin of inhaling of this embodiment magnetizes and die-cut device, and the basic structure, batching are the same as embodiment 3, and the difference lies in with the improvement: the cutting die width adjusting mechanism 85 comprises an air cylinder 851, a lead screw 852, a ball type width adjusting frame 853, a positioning frame 854, a cutting die bearing fixing frame 855 and a screw hole block 856, wherein the ball type width adjusting frame 853 is fixed on the side surface of the stamping platform 83; the lead screw 852 penetrates through the ball type width adjusting frame 853, extends towards the left end and the right end by taking the ball type width adjusting frame 853 as a center, threads of the left part and the right part are arranged in opposite directions, and two ends of the lead screw 852 respectively penetrate through respective screw hole blocks 856; each screw hole block 856 is fixed in a respective cutter die receiving fixing frame 855; positioning frame 854 is downwardly opening's frame shape, and the back-off accepts the top of mount 855 in the cutting die, and the top of positioning frame 854 sets up cylinder 851, telescopic link in the cylinder 851 passes positioning frame 854 and the cutting die accepts the mount 855 after, acts on screw hole piece 856, whole cutting die width adjustment mechanism 85 convenient operation, and the location is accurate, and to the omnidirectional location of cutting die and fixed, reduced unedged production as far as during die-cut to the damage of blade to the conveyer belt has further been avoided.

In the production method of the magnetic attraction type damping fin magnetizing and punching device, in the first step, ingredients comprise 300 kilograms of magnetic powder; 200 kilograms of superfine light calcium powder with the grain diameter of 0.5 to 1 mu m; 65 kg of mica powder with particle size, 75 kg of asphalt, 30 kg of asphalt modifier (such as SBS styrene or EVA ethylene-vinyl acetate copolymer), 12 kg of softener (such as vegetable oil, rubber oil, rolling glue oil and the like), 5 kg of fiber (such as fibrilia and aramid fiber),

the preparation method of the superfine light calcium powder comprises the following steps:

step one, reactant generation: carrying out double decomposition reaction on sodium carbonate and calcium chloride to generate calcium carbonate precipitate, and filtering to obtain calcium carbonate coarse powder;

step two, mixing: fully mixing calcium carbonate coarse powder, a dispersing agent and water to form a freeze-dried precursor;

step three, quick-freezing: spreading the freeze-dried precursor into a mould, and then placing the mould into a quick-freezing warehouse to quickly freeze into blocks;

step four, freeze-drying: pushing the block material into a freeze-drying bin for freeze-drying to form a honeycomb block material;

step five, fine grinding: and (3) feeding the honeycomb block material into a grinder to be finely ground into superfine light calcium powder.

4. adding calcium powder: adding the magnetic powder, the mica powder and the ultrafine light calcium powder prepared by freeze-drying into a kneader and continuously stirring for 10 minutes;

5. extruding: and after stirring is finished, transferring the mixture into an extruder for extrusion and tabletting by using double rollers to generate the damping sheet.

In the production process of the magnetizing and punching device for the magnetic damping fin, the superfine light calcium powder is produced from the raw materials, so that the production cost is further reduced.

Example 5

The magnetic damping fin magnetizing and punching device of the embodiment has the same basic structure and ingredients as those of the embodiment 4, and has the following difference and improvement points: as shown in fig. 4, the cutting die 81 includes a substrate and a blade 811 fixedly connected to the substrate; a sponge layer 812 which has the same thickness as the blade 811 and is fixed on the substrate is paved around the blade 811, when punching, the blade 811 can be cleaned, and a small amount of lubricating oil can be sprayed in the sponge layer 812 to keep the blade clean and lubricated, so as to further reduce the generation of burrs; as shown in fig. 3, the cutting die receives the bottom of the fixing frame 855, and a clamping groove 8551 for clamping the cutting die 81 is formed in the cutting die, so that the cutting die 81 is conveniently clamped, and the cutting die 81 is more conveniently replaced; the die-cut conveyer belt 9 has a breaking strength of more than 20Mpa and a breaking elongation of more than 400%, and is suitable for the magnetic absorption type damping fin 10.

The ingredients of the material comprise 400 kg of magnetic powder; 240 kilograms of superfine light calcium powder with the grain diameter of 0.5 to 1 mu m; 70 kilograms of mica powder, 70 kilograms of asphalt, 30 kilograms of asphalt modifier (such as SBS styrene or EVA ethylene-vinyl acetate copolymer), 10 kilograms of softener (such as vegetable oil, rubber oil, rolling glue oil and the like), 5 kilograms of fiber (such as fibrilia and aramid fiber), wherein:

step two, mixing: fully mixing the calcium carbonate coarse powder, the residual EVA, the rolling gum oil and the water to obtain a freeze-dried precursor;

step three, quick-freezing: spreading the freeze-dried precursor in a mould, and quickly freezing the mould into blocks in a quick-freezing warehouse at about-38 ℃;

step four, freeze-drying: pushing the block-shaped material into a freeze-drying bin for freeze-drying to form a honeycomb-shaped block material;

step five, fine grinding: and (3) feeding the honeycomb block material into a grinding machine for fine grinding to obtain the ultrafine light calcium powder.

2. fiber crushing: in the stirring process of the step 1, after the fibrilia is crushed to 10 meshes, putting the fibrilia into a kneader and continuously stirring for 20 minutes;

3. adding calcium powder: adding the magnetic powder, the mica powder and the ultrafine light calcium powder prepared by freeze-drying into a kneader and continuously stirring for about 5 minutes;

4. extruding: and after stirring is finished, transferring the mixture into an extruder for extrusion and tabletting by using double rollers to generate the damping sheet.

In the production technology of the magnetic attraction type damping fin magnetizing and punching device, the asphalt modifier and the softener are mixed and added in the mixing step, and the asphalt modifier and/or the softener can be freeze-dried and positioned around mica or light calcium micro powder, so that the later-stage stirring process and the combination of asphalt are improved, the effects of the asphalt modifier and/or the softener are rapidly unfolded, the time of the whole processing technology is shortened, and the aging of the asphalt in the stirring process is avoided.

Example 6

In the production process of the magnetizing and punching device for the magnetic damping fin, the basic ingredients are the same as those in embodiment 5, and the differences and improvements are as follows: the ingredients of the material comprise 350 parts by weight of magnetic powder; 280 kilograms of superfine light calcium powder with the grain diameter of 0.5 to 1 mu m; 75 kilograms of mica powder, 75 kilograms of asphalt, 50 kilograms of asphalt modifier (such as SBS styrene or EVA ethylene-vinyl acetate copolymer), 10 kilograms of softener (such as vegetable oil, rubber oil, rolling glue oil and the like), 5 kilograms of fiber (such as fibrilia and aramid fiber), and the preparation steps of the superfine light calcium powder are as follows:

step one, generating a reactant: carrying out double decomposition reaction on sodium carbonate and calcium chloride to generate calcium carbonate precipitate, and filtering to obtain calcium carbonate coarse powder;

step two, mixing: fully mixing the calcium carbonate coarse powder, the residual EVA, the rolling glue oil and water to obtain a freeze-dried precursor;

step three, quick-freezing: spreading the freeze-dried precursor in a mould, and quickly freezing the mould into blocks in a quick-freezing warehouse at about-40 ℃;

step four, freeze-drying: pushing the block material into a freeze-drying bin for freeze-drying to form a honeycomb block material; the freeze-drying process is the same as that of mica powder;

step five, fine grinding: feeding the honeycomb block material into a grinding machine, finely grinding the honeycomb block material to obtain superfine light calcium powder, analyzing the morphology and components of the powder material by using a field emission scanning microscope, and grinding the superfine light calcium powder to obtain the superfine light calcium powder with more or less deep or shallow micropores on the particle surface.

1, asphalt softening: putting AH-80 asphalt into a kneader, heating to about 100 ℃ for softening, and stirring into fluid;

2, fiber crushing: in the stirring process of the step 1, after the fibrilia is crushed to 10 meshes, putting the fibrilia into a kneader and continuously stirring for 20 minutes;

3, adding calcium powder: adding the magnetic powder, the mica powder and the ultrafine light calcium powder prepared by freeze-drying into a kneader and continuously stirring for about 5 minutes, diluting the stirred fluid with water for a test, taking the precipitate and carrying out microscopic analysis on the morphology and the components of the powder material, and finding that more or less asphalt around the particles permeates into micropores; indicating an increased degree of binding of bitumen and particles;

4, extruding: and after stirring is finished, transferring the mixture into an extruder for extrusion and tabletting by using double rollers to generate the damping sheet.

In the production process of the magnetizing and punching device for the magnetic absorption type damping fin, the whole freeze-drying process is not over 2 hours, the production cost cannot be increased, and after the asphalt permeates into the micropores, the mica powder and the light calcium powder with greatly improved proportion have a slow release effect on the smell of the asphalt, so that harmful gas is prevented from being produced in batches in a short time to cause harm to human bodies.

Example 7

In the production process of the magnetizing and punching device for the magnetic damping fin, the basic components and steps are the same as those in embodiment 6, and the differences and improvements are as follows: the asphalt modifier and/or softener can be added in the mixing step and the step 2 respectively to play the role as much as possible, so that the effect is prevented from being weakened after the asphalt modifier and/or softener is completely applied in a certain step.

Example 8

In the production process of the magnetizing and punching device for the magnetic damping fin, the basic ingredients are the same as those in embodiment 5, and the differences and improvements are as follows:

step two, mixing: fully mixing calcium carbonate coarse powder, rolling gum oil and water to obtain a freeze-dried precursor; the amount of the added water is 3 times of the total weight of the coarse powder;

step three, quick-freezing: spreading the freeze-dried precursor into a mold with the thickness of 5.0cm, and quickly freezing the freeze-dried precursor into blocks in a quick-freezing warehouse at about-40 ℃;

step four, freeze-drying: pushing the block-shaped material into a freeze-drying bin for freeze-drying to form a honeycomb-shaped block material; the freeze-drying process is the same as that of mica powder;

1. asphalt softening: putting AH-80 asphalt into a kneader, heating to about 100 ℃ for softening, and stirring into fluid;

2. stirring: adding the rest EVA into a kneader and stirring;

3. fiber crushing: in the stirring process of the step 1, after the fibrilia is crushed to 10 meshes, putting the fibrilia into a kneader and continuously stirring for 20 minutes;

4. adding calcium powder: adding the magnetic powder, the mica powder and the ultrafine light calcium powder prepared by freeze-drying into a kneader and continuously stirring for about 5 minutes;

In the production process of the magnetizing and punching device for the magnetic absorption type damping fin, the whole freeze-drying process is not over 2 hours, the production cost cannot be increased, and after the asphalt permeates into the micropores, the mica powder and the light calcium powder with greatly improved proportion have a slow release effect on the smell of the asphalt (the asphalt partially permeates into the micropores and the micro pits, so that harmful gas is prevented from being produced in batches in a short time to cause harm to human bodies).

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. The magnetic attraction type damping piece magnetizing and punching device is characterized by comprising a magnetizing mechanism (6) and a punching and cutting mechanism (8) which are arranged according to working procedures; wherein:

the magnetizing mechanism (6) comprises a magnetizing frame (61), a magnetizing conveyor belt (62), a magnetizing roller (64) and a pressing plate (66), wherein the magnetizing conveyor belt (62) is flatly paved on the surface of the magnetizing frame (61) in a reciprocating manner; two ends of the magnetizing roller (64) are detachably and fixedly connected with the magnetizing frame (61) and are suspended above the magnetizing conveyor belt (62); the two side ends of the pressing plate (66) are also detachably and fixedly connected with the magnetizing frame (61), the front end of the pressing plate (66) is close to the magnetizing roller (64), and a gap through which the magnetic absorption type damping sheet (10) can pass is reserved;

the punching and cutting mechanism (8) comprises two supporting platforms (82) at two sides of the punching and cutting conveyer belt (9), a punching platform (83) which is horizontally placed and fixed at the inner side surfaces of the two supporting platforms (82), a lifting height adjusting mechanism (84) and the punching and cutting conveyer belt (9) which passes through the punching and cutting mechanism (8) and conveys the magnetic absorption type damping sheet (10); the punching platform (83) is connected with a cutting die (81) which is detachably mounted at the bottom of the punching platform (83) through a lifting height adjusting mechanism (84);

the lifting height adjusting mechanisms (84) are 4 lifting screw rods symmetrically arranged at four corners of the stamping platform (83); a damping sheet sensing mechanism (87) is arranged at the bottom of the front end of the punching conveying belt (9);

the cutting die width adjusting mechanism (85) comprises an air cylinder (851), a lead screw (852), a ball type width adjusting frame (853), a positioning frame (854), a cutting die bearing fixing frame (855) and a screw hole block (856), and the ball type width adjusting frame (853) is fixed on the side surface of the stamping table (83); the lead screw (852) penetrates through the ball type width adjusting frame (853) and extends towards the left end and the right end by taking the ball type width adjusting frame (853) as a center, threads of the left part and the right part are arranged in a reverse mode, and two ends of the lead screw (852) penetrate through respective screw hole blocks (856) respectively; each screw hole block (856) is fixed in a respective cutter die bearing fixing frame (855); positioning frame (854) are open-ended frame shape downwards, and the back-off accepts the top of mount (855) in the cutting die, and the top of positioning frame (854) sets up cylinder (851), telescopic link in cylinder (851) passes positioning frame (854) and the cutting die accepts the mount (855) after, acts on screw hole piece (856).

2. The device of claim 1, wherein the damping plate comprises:

the number of the pressing plates (66) is 2, and the two sides of the magnetizing roller (64) are arranged in a splayed and oblique symmetrical mode.

3. The device of claim 2, wherein the damping plate comprises: the magnetizing mechanism (6) also comprises a plurality of water absorbing rollers (65), two ends of the water absorbing rollers are fixed on the magnetizing frame (61), the water absorbing rollers are symmetrically arranged on the magnetizing conveyor belt (62), and gaps are reserved between the water absorbing rollers and the magnetizing conveyor belt (62); a carrier roller (611) is also arranged at the bottom of the magnetizing conveyor belt (62);

the punching and cutting mechanism (8) further comprises 2 cutting die width adjusting mechanisms (85) which are respectively arranged on the front side and the rear side of the punching platform (83) and directly above the punching conveying belt (9).

4. The device of claim 3, wherein the damping plate comprises: the cutting die (81) comprises a substrate and a blade (811) fixedly connected to the substrate; a sponge layer (812) which is as thick as the blade (811) is paved around the blade (811) and is fixed on the substrate; the cutting die bears against the bottom of the fixed frame (855), and a clamping groove (8551) for clamping the cutting die (81) is formed in the cutting die; the breaking strength of the punching conveyer belt (9) is more than 20Mpa, and the breaking elongation is more than 400%.

5. A production process of the magnetizing and punching device for the magnetic damping sheet according to claim 4 is characterized by comprising the following steps:

step one, preparing magnetic damping fins: the components comprise 300 to 400 weight portions of magnetic powder, 200 to 300 weight portions of calcium powder, 70 to 80 weight portions of asphalt, 65 to 75 weight portions of mica powder, 30 to 50 weight portions of asphalt modifier, 8 to 12 weight portions of softener and 3 to 5 weight portions of fiber; the calcium powder is superfine light calcium powder with the particle size of 0.5 to 1 mu m;

step two, production of the magnetic damping sheet blank:

(1) Asphalt softening: adding asphalt into a kneader, heating, softening and stirring to obtain fluid;

(2) Stirring: sequentially adding the asphalt modifier and the softener into a kneader for stirring;

(3) Fiber crushing: in the stirring process of the step (2), crushing the fibers, and then putting the fibers into a kneader for continuous stirring;

(4) Adding calcium powder: adding calcium powder, magnetic powder and mica powder into a kneader and continuously stirring;

(5) Extruding: after stirring, transferring the mixture into an extruder for extrusion and pressing the mixture into a magnetic damping sheet (10) by using a pair of rollers;

step three, magnetizing: magnetizing the magnetic absorption type damping fin (10) through a magnetizing mechanism (6);

step four, cooling: the magnetic absorption type damping fin (10) is subjected to film covering, hot drying and shaping, and then is cooled by an air cooling mechanism;

step five, transferring: the air-cooled conveyer belt conveys the magnetic damping sheet (10) to the punching conveyer belt (9);

step six, punching: starting the punching conveyer belt (9) to bring the magnetic damping sheet (10) below the cutting die (81);

(1) The cutting die (81) is placed: placing the cutting die (81) between two opposite 4 cutting die bearing fixing frames (855);

(2) Width adjustment: rotating a round handle of the ball type width adjusting frame (853), and driving a cutting die bearing fixing frame (855) to move oppositely by screw rods (852) with reverse threads at two ends until two side ends of a cutting die (81) are clamped;

(3) Starting the air cylinder: starting the air cylinder (851), wherein the air cylinder telescopic rod drives the cutting die bearing fixing frame (855) to ascend until the upper surface of the cutting die (81) is in close contact with the bottom end of the lifting screw rod;

(4) Thickness adjustment: the cutting thickness of the magnetic damping sheet (10) is adjusted by rotating the lifting screw rod;

(5) The stamping and cutting mechanism is started: the punching and cutting mechanism (8) sets up upper and lower punching frequency by combining a numerical control cabinet with the conveying speed of the punching conveying belt (9) to punch the magnetic absorption type damping sheet (10) into a single damping sheet.

6. The production process of the magnetizing and punching device for the magnetic damping sheet according to claim 5, wherein the production process comprises the following steps: the preparation method of the superfine light calcium powder in the first step comprises the following steps:

(1) And (3) generation of reactants: carrying out double decomposition reaction on sodium carbonate and calcium chloride to generate calcium carbonate precipitate, and filtering to obtain calcium carbonate coarse powder;

(2) Mixing: fully mixing calcium carbonate coarse powder, a dispersing agent and water to form a freeze-dried precursor;

(3) Quick-freezing: spreading the freeze-dried precursor into a mould, and then placing the mould into a quick-freezing warehouse to quickly freeze into blocks;

(4) Freeze-drying: pushing the block-shaped material into a freeze-drying bin for freeze-drying to form a honeycomb-shaped block material;

(5) Fine grinding: and (3) feeding the honeycomb block material into a grinder to be finely ground into superfine light calcium powder.

7. The production process of the magnetizing and punching device for the magnetic damping sheet according to claim 6, wherein the production process comprises the following steps: the quick-freezing temperature in the step (3) of the first step is-38 to-40 ℃; the process curve of the freeze-drying is as follows:

B. and (3) heat preservation period: the temperature of the plate is reduced to 80-85 ℃/min, the temperature is kept for 30-40 minutes, and the vacuum is controlled within 80 Pa;

8. The production process of the magnetizing and punching device for the magnetic damping sheet according to claim 7 is characterized in that: uniformly mixing and adding the asphalt modifier and/or the softening agent in the mixing step of the step one (2), and quickly freezing; the dosage of the water is 2.5 to 3.0 times of the total weight of the coarse powder; the thickness of the material laid in the mould is 5.0-6.0 cm; and (4) in the freeze-drying process in the step one, controlling the temperature of a cold trap below-30 ℃.

9. The production process of the magnetizing and punching device for the magnetic damping sheet according to any one of claims 5 to 8, wherein: in the second step, the stirring time of the steps (1) and (3) is 5 to 10 minutes; the stirring time in the step (2) is 10 to 20 minutes; the crushing granularity of the step (3) is below 20 meshes; the stirring time in the step (4) is 30-40 minutes.