CN112371451B

CN112371451B - Composite melt-blown cloth production device and composite melt-blown cloth production method

Info

Publication number: CN112371451B
Application number: CN202011118086.XA
Authority: CN
Inventors: 陈文忠; 肖文峰
Original assignee: Fujian Zhiluo Technology Co ltd
Current assignee: Fujian Zhiluo Technology Co.,Ltd.
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-10-19
Anticipated expiration: 2040-10-19
Also published as: CN112371451A

Abstract

The invention discloses a coating device.A coating platform is provided with a notch and a placing groove; in the adjacent widening plates, a second long-strip opening groove in the widening plate at the inner position and a second long-strip lug of the widening plate at the outer position are in sliding fit with each other, and a pushing convex block of the widening plate at the outer position extends into a long-strip guide groove in the widening plate at the inner position and is in contact with the front inner wall of the long-strip guide groove; the widening plates positioned at the outer part can move forwards to drive all the widening plates at the inner side to synchronously move forwards; the apron can close on the standing groove, and the top surface of apron flushes with the top surface of coating platform. The invention also discloses a production device of the composite melt-blown fabric and a production method of the composite melt-blown fabric. The invention has the advantages of changing the coating width in real time to meet the requirements of coating of cloth materials with different widths, reducing the residue of the coating materials on a coating platform, improving the cloth function and improving the production efficiency.

Description

Composite melt-blown cloth production device and composite melt-blown cloth production method

Technical Field

The invention relates to the technical field of melt-blown cloth, in particular to a production device and a production method of composite melt-blown cloth.

Background

The melt-blown fabric is a melt-blown nonwoven fabric which is formed by drawing a polymer melt stream extruded from a spinneret orifice (discharge orifice) by high-speed hot air flow, thereby forming superfine fibers, collecting the superfine fibers on a coagulation screen or a roller, and bonding the superfine fibers to the coagulation screen or the roller.

With the development of society, people's requirements for the performance of the meltblown fabric no longer meet the requirements of meltblown fabric fiber materials, and the type of functionalized meltblown fabric and the preparation method thereof are produced.

The common treatment for functionalizing or differentiating the melt-blown fabric comprises a film coating mode, and the film coating modes in the prior art comprise knife coating, roller coating and the like.

For example, patent application 201310128380.2 discloses a bacteriostatic non-woven fabric and a method for preparing the same, which is characterized in that a polymer film-forming agent is coated on the non-woven fabric after the non-woven fabric is formed, so as to improve the bacteriostatic effect of the non-woven fabric and prolong the bacteriostatic time, thereby achieving real long-acting antibacterial effect. The adopted polymer film forming agent comprises the following raw materials in percentage by mass: 80-94% of high molecular polymer emulsion, 1-10% of bacteriostatic agent and 5-10% of auxiliary agent.

For example, in patent application 201310516155.6, a method for manufacturing a shielding radiation-proof composite nonwoven fabric includes coating a shielding adhesive on a surface of a molten nonwoven fabric prepared in a blade coating process, and drying the molten nonwoven fabric into a roll to obtain the shielding radiation-proof composite nonwoven fabric. The shielding adhesive is prepared by stirring and mixing boehmite, zeolite powder, titanate modifier, hydroxy cellulose, methyl glucitol polyether and deionized water. Therefore, how to provide the functions of the non-woven fabric and improve the performance of the non-woven fabric has great market value.

When the prior art adopts the mode of knife coating to coat the cloth, set up the scraper in the top that the delivery path was scribbled to the sword, through adding coating liquid on the surface of cloth, when the cloth passes through the scraper, coating liquid evenly coats on the surface of cloth under the effect of scraper. As is known, the widths of different fabrics are different, for example, the gram weight of the melt-blown fabric is usually 18g-500g/m2, and the widths of the melt-blown fabric are generally 160cm, 175cm, 180cm and the like. The size (width) of the coating platform is usually fixed, so that when the cloth with a narrow width is subjected to knife coating, the width of the cloth is smaller than the width of the coating platform, so that the feed liquid subjected to knife coating by a scraper can flow to the two sides of the coating platform from the two sides of the scraper, and the coating liquid usually has certain viscosity and solidifiable performance, so that the feed liquid flowing to the two sides of the coating platform needs to be continuously cleaned, otherwise, the curing on the coating platform can cause trouble in later cleaning and even influence the normal coating of the next section of cloth.

In addition, as a feeding and feeding device for cloth in a main working section of a coating process, because a feeding end of a feeding frame (unwinding frame) has a certain height, when the fabric is fed into the feeding frame, a worker is required to lift a cloth roll into a feeding station, and the technical problem of labor waste in operation exists.

In summary, the composite cloth production apparatus in the prior art has the necessity of improvement and further research in the aspects of process preparation and equipment optimization.

Disclosure of Invention

The technical problems to be solved by the invention are that the coating width is changed to meet the requirements of coating of cloth materials with different widths, and the residue of the coating material on a coating platform is reduced to improve the production and processing efficiency and convenience of the composite cloth material.

The invention solves the technical problems through the following technical means: a coating apparatus comprising a coating platform, a doctor blade; the scraper is arranged above the coating platform, a coating gap is formed between the bottom of the scraper and the top surface of the coating platform, and a material to be coated can pass through the coating gap;

notches are symmetrically formed in the two sides of the coating platform in the width direction, and the projection of the scraper in the vertical direction penetrates through the notches; a placing groove with an upward opening is arranged at the rear end of the notch; the placing groove is communicated with the notch, and the inner side wall of the placing groove is flush with the inner side wall of the notch; a supporting plate is arranged at the front end of the placing groove;

mounting mortises are formed in the front inner wall of the notch; a plurality of widening plates are arranged in the placing groove, the top surfaces of the widening plates are flush with the top surface of the coating platform, one end of each widening plate is provided with an installation tenon, and the widening plates can move forwards until the installation tenons are matched with the installation mortise and tenon joints; the plurality of widening plates are sequentially contacted in parallel from inside to outside along the width direction of the coating platform, and the inner side surface of the innermost widening plate is contacted with the inner side wall of the notch and the inner side wall of the placing groove;

a cover plate is limited in the placing groove, and the cover plate and the widening plate on the same side are the same in number and are in one-to-one correspondence; a return spring is supported below the cover plate, the rear end face of the cover plate is in contact with the rear inner wall of the placing groove, and the inner side face of the cover plate at the innermost side is in contact with the inner side wall of the placing groove;

the outer sides of all the widening plates are provided with strip-shaped guide grooves, the inner sides of other widening plates except the innermost widening plate are provided with pushing convex blocks, and in two adjacent widening plates, the pushing convex block of the widening plate positioned at the outer side extends into the strip-shaped guide groove in the widening plate positioned at the inner side and is in contact with the front inner wall of the strip-shaped guide groove; in the same gap, the widening plates positioned outside can move forwards to drive all the widening plates on the inner side to synchronously move forwards;

when the widening plate is translated backwards until the rear end face of the widening plate is contacted with the rear inner wall of the placing groove, and the front end of the widening plate is supported on the supporting plate, the corresponding cover plate can be limited below the widening plate, and the corresponding return spring is compressed;

when the widening plate translates forward to the cooperation of tenon fourth of the twelve earthly branches, the preceding terminal surface of widening plate with the preceding inner wall contact of breach, the widening plate is staggered mutually with the apron that corresponds, the rear end of widening plate is supported in the backup pad just the rear end face of widening plate with the back inner wall of backup pad flushes or the rear end face of widening plate is in the rear of the back inner wall of backup pad, the reset spring reset motion that corresponds drive the apron that corresponds upwards promote to the top surface of apron with the top surface of coating platform flushes just the preceding terminal surface of apron and the terminal surface contact of the widening plate that corresponds.

Preferably, a first guide slide block and a second guide slide block which are guided in the vertical direction are respectively arranged on the rear inner wall of the placing groove and the rear inner wall of the supporting plate; the device also comprises a moving plate and a straight plate; two ends of the moving plate are respectively in sliding fit with the corresponding first guide sliding block and the second guide sliding block, and the upper end and the lower end of the straight plate are respectively connected with the bottom of the cover plate and the top of the moving plate.

Preferably, baffles are arranged on the rear inner wall of the placing groove and the rear inner wall of the supporting plate, and when the cover plate is lifted upwards to the top surface of the cover plate and the top surface of the coating platform are flush, the top surface of the moving plate is in contact with the bottom surfaces of the baffles.

Preferably, when the cover plate is limited below the corresponding widening plate, the bottom surface of the cover plate is in contact with the top surface of the baffle plate.

Preferably, the baffle is a first magnetic plate, second magnetic plates are arranged at the bottom of the cover plate and at the top of the moving plate, the first magnetic plate and the corresponding second magnetic plate are in mutual magnetic attraction when in contact, and preferably, a diversion trench is arranged at the bottom of the notch.

Preferably, the coating device further comprises a feeding device comprising a feeding tube; the feed tube is located above the coating platform, and the coating flowing out of the feed tube can fall on the material to be coated of the coating platform.

Preferably, the feeding device further comprises a feeding screw rod and a feeding sliding block, the feeding pipe is arranged on the feeding sliding block, and the feeding screw rod is in threaded fit with the feeding sliding block.

Preferably, the feeding screw rod is a reciprocating screw rod.

The invention also discloses a production method of the composite melt-blown fabric, which comprises the following steps:

feeding a PP melt-blown cloth roll to a feeding device;

selecting the number of the widening plates in each notch according to the width of the PP melt-blown fabric, moving the outermost widening plate pair in the selected widening plates in each notch until the selected widening plates all move forwards until the mounting tenon is matched with the mounting mortise, the corresponding cover plate is lifted and covered, and the width of a coating area is adjusted;

step three, coating the PP melt-blown fabric;

step four, drying the coated PP melt-blown fabric;

and step five, winding and blanking the dried composite melt-blown fabric.

Preferably, the first step comprises the steps of:

s11, rotating the overturning and feeding platform until the placing surface is an inclined surface, wherein the position of one end far away from the lifting platform is lower than the position of one end close to the lifting platform, and placing the PP melt-blown fabric roll on the placing surface;

s12, rotating the overturning feeding platform towards the lifting platform, and enabling the PP melt-blown cloth roll to fall to the top of the lowered lifting platform;

s13, resetting and rotating the overturning and feeding platform back to the lifting platform, and enabling the lifting platform to move upwards until the PP melt-blown cloth roll is opposite to the involutory fastening device;

s14, starting the involution fastening device, extending the two involution roller bodies until the two ends of the involution roller bodies are oppositely closed, and then extending the fastening piece out of the involution roller bodies and pressing the fastening piece against the inner wall of the paper tube of the PP melt-blown cloth roll to fasten the PP melt-blown cloth roll;

and S15, connecting the end part of the PP melt-blown cloth roll with the cloth of a subsequent winding device, driving the PP melt-blown cloth roll to unwind through the winding motion of the winding device or driving the involution roller body to rotate through a motor to drive the PP melt-blown cloth roll to unwind, and conveying the cloth unwound from the PP melt-blown cloth roll to a subsequent process.

Preferably, the coating liquid adopted in the third step comprises the following raw materials in percentage by mass: 5-8 parts of polyvinyl alcohol, 1-2 parts of chitosan, 1-2 parts of glacial acetic acid, 0.1-2 parts of titanium dioxide and 90-100 parts of water.

Preferably, the preparation of the coating liquid comprises the steps of:

(1) stirring and dissolving polyvinyl alcohol in water at 70-90 ℃ to obtain a 5 wt% polyvinyl alcohol aqueous solution;

(2) stirring and mixing chitosan, glacial acetic acid and water according to a mass ratio of 1:1:47 at the temperature of 60-80 ℃ for 2-3 h to prepare a chitosan-glacial acetic acid aqueous solution;

(2) adding titanium dioxide powder into the chitosan-glacial acetic acid aqueous solution, stirring for 10-30 min, and obtaining a chitosan-glacial acetic acid-titanium dioxide mixed aqueous solution; the mass ratio of the titanium dioxide to the chitosan is 1: 1;

(3) and (3) mixing the solution obtained in the step (1) and the solution obtained in the step (3), dripping a cross-linking agent, and stirring at the temperature of 20-40 ℃ for 20-60 min to obtain a coating solution, wherein the mass ratio of polyvinyl alcohol to chitosan is 3: 1.

Preferably, the cross-linking agent is 0.2-5 wt% of glutaraldehyde aqueous solution.

Preferably, the cross-linking agent is 2 wt% glutaraldehyde water solution, and the mass ratio of the glutaraldehyde water solution to the chitosan is 1: 3.

Preferably, the coating amount is 20 to 50g/m 2 after drying.

Preferably, the gram weight of the melt-blown fabric is 30-180 g/m < 2 >.

According to the invention, the coating liquid is compounded with the PP melt-blown fabric, and the natural antibacterial property of chitosan and the antibacterial property of TiO 2 are utilized to endow the PP melt-blown fabric with multiple antibacterial capabilities; meanwhile, polyvinyl alcohol is added into the coating liquid, so that the mechanical property of the composite cloth is improved.

The invention also discloses a composite melt-blown cloth production device which sequentially comprises a feeding device, a coating device, a drying device and a winding device from front to back according to the process flow;

the feeding device is used for conveying the cloth to the coating device, the coating device is used for coating the cloth, the drying device is used for drying the coated cloth, and the winding device is used for winding the dried cloth;

the feeding and feeding device comprises a turnover feeding platform, a lifting platform and a folding and fastening device; the top of the overturning and feeding platform is a placing surface, the overturning and feeding platform can be rotated towards the lifting platform to enable the lifting platform to move downwards, and a cloth roll on the placing surface can fall into the top of the lifting platform; the overturning and feeding platform is rotated back to the lifting platform, so that the lifting platform can move upwards to enable the cloth roll at the top of the lifting platform to be opposite to the involutory fastening device, and the lifting platform rotates to enable the position of one end, far away from the lifting platform, of the placing surface of the lifting platform to be lower than one end, close to the lifting platform, of the placing surface of the lifting platform;

the two groups of involutory fastening devices are symmetrically distributed on two sides of the lifting platform; each group of the involutory fastening devices comprises an involutory roller body, an extrusion movable block, a fastening piece and an involutory roller driving device, the involutory roller body is in running fit with the involutory roller driving device, the involutory roller driving device can drive the involutory roller body to extend, the extrusion movable block is in running fit with the end part of the involutory roller body, the involutory roller bodies at two sides can extend into a paper tube of a cloth roll from different ends of the cloth roll respectively, when the two involutory roller bodies extend to be opposite, the two extrusion movable blocks mutually extrude and move to the inner cavity of the corresponding involutory roller body, so that part of the fastening piece extends out of the involutory roller body and is pressed against the inner wall of the paper tube.

The invention has the following advantages:

compared with the prior art, the coating device for knife coating the material has the following advantages that:

firstly, the invention can adjust the width adjustment of the actual coating area of the coating platform (namely the area with the gap in the coating platform) according to the actual amplitude of the material to ensure that the edges of the two sides of the width direction of the material are respectively aligned with the edges of the two sides of the gap area after the width adjustment (namely the outer edges of the widening plates which participate in the widening and are at the outermost sides) in the vertical direction, so that after knife coating, redundant coating materials can timely flow down from the corresponding gap without causing trouble in later cleaning and even influencing the normal coating of the next section of material like the prior art which is solidified on the coating platform.

Secondly, because the pushing convex blocks of the widening plates at the outer positions of the invention extend into the strip guide grooves of the widening plates at the inner positions, when the widening plates at the inner positions are pushed forwards, the strip guide grooves of the widening plates at the inner positions can not contact with the pushing convex blocks at the outer positions in the forward moving process, the widening plates at the outer positions cannot be driven to move synchronously, the pushing convex blocks in the outer widening plates always contact with the front inner walls of the strip guide grooves of the widening plates at the inner positions in the forward moving process, the widening plates at the outer positions always drive the widening plates at the inner positions to move synchronously forwards, and further, when width adjustment is needed, all the widening plates at the inner sides can move synchronously forwards without driving other widening plates by pushing the outermost widening plates at the selected number of the widening plates, the same notch widening can be achieved only by one operation.

Thirdly, after the widening plate moves out of the placing groove, an opening at the top of the placing groove is formed, and the opening is closed to meet the requirement for the stability of the material conveying process. According to the invention, the cover plate and the return spring are arranged in the placing groove through the cover plate, so that when the widening plate is translated forwards to be matched with the mortise and tenon joints, namely after the widening plate is widened, the corresponding cover plate is automatically driven to be lifted under the stretching and resetting action of the return spring to cover the opening, and the support and the conveying stability of the material in the conveying process are ensured.

Fourthly, the front end face of the widening plate is contacted with the front end face of the notch, the top face of the widening plate is flush with the top face of the coating platform, the inner side face of the innermost widening plate is contacted with the inner side wall of the notch and the inner side wall of the placing groove, and adjacent widening plates are sequentially contacted in parallel from inside to outside, so that seamless and same-height plane widening of the notch area in the coating platform is realized; and the inner side surface of the cover plate at the innermost side is contacted with the inner side wall of the placing groove, the cover plate at the same side is in one-to-one correspondence with the widening plates, namely the two adjacent cover plates are in parallel contact in the width direction in sequence, so that the opening on the placing groove is closed in a seamless and same-height plane after the widening plates move forwards, and the materials are free of drop height in the conveying process and reduced in gaps as much as possible.

And fifthly, by adopting the structure of the invention, on the basis of meeting the function realization of each widening plate and each cover plate, the integration of each widening plate and each cover plate on the coating platform is realized, and the technical effect of convenient online adjustment is met.

Furthermore, the feeding end of the feeding pipe can be communicated with the storage box, the discharge hole of the feeding pipe faces downwards to the coating platform, the coating material in the storage box is pumped into the feeding pipe through the pump, and the feeding pipe can be provided with a valve for adjusting the flow rate of the coating material flowing downwards.

Furthermore, the feeding screw rod can be driven to rotate by the rotation of the feeding screw rod motor, so that the movement of the feeding pipe at two ends of the coating platform in the width direction is realized, and the uniformity of the coating material in the flowing-down process is ensured.

Further, compared with the prior art, the loading and feeding device for loading and fastening the cloth roll has the following advantages: firstly, the cloth roll can be put on the shelf at a low position, and particularly, the cloth roll is placed on the placing surface of the low-position overturning and loading platform, the cloth roll falls from the placing surface to the top of the lifting platform by utilizing upward overturning of the overturning and loading platform and the descending motion of the lifting platform, and the cloth roll is opposite to the folding and fastening device by utilizing the ascending motion of the lifting platform; therefore, the feeding method adopts a two-step method, comprises two stages of low-position discharging and high-position lifting, realizes the low-position discharging of the fabric roll so as to save labor consumption caused by manual carrying, can be carried out in a stable manner in the lifting stage, and thoroughly abandons the step of manual lifting compared with the method of directly lifting the fabric roll to the top of the lifting platform and then lifting. The low-position discharging and high-position lifting movement of the invention are cooperatively matched, and the operation flexibility and the operation accuracy are higher. Secondly, the cloth roll adopts a mode of closing and fastening the closing roller bodies on the two sides in the fastening stage, the closing roller bodies on the two sides are always integrated on the feeding machine frame, after the involutory roller bodies on the two sides extend out to be oppositely combined, the local part of the fastener extends out of the involutory roller body and is pressed against the inner wall of the paper tube, the paper tube is fastened by utilizing the friction force generated between the local part of the fastener and the inner wall of the paper tube, because the involutory roller body is matched with the involutory roller driving device in a rotating way, when the involutory roller body rotates actively, can drive the paper tube to rotate so as to realize the unwinding of the cloth roll or can drive the involution roller body to rotate when the cloth roll is unwound by the winding force of a subsequent winding device, of course, the unwinding of the fabric roll may be a combination of the active rotation of the joining roller body and the unwinding by the winding force of the subsequent winding device. So, compare the mode of prior art inserting inflatable axle in the fiber container, there are following advantages: the involution roller body is always integrated on the feeding rack, a plurality of air expansion shafts are not required to be configured, and the operation of inserting the air expansion shafts before the involution roller body is placed on the upper rack is also not required; when the cloth roll is fastened, the involution roller bodies on the two sides extend out to be oppositely combined, so that part of the fastening piece extends out of the involution roller bodies and is pressed against the inner wall of the paper tube, the triple operations of connecting the involution roller bodies on the two sides into a whole, fastening the cloth roll and rotatably matching the cloth roll with the feeding rack can be realized at one time, the operations of involution of the air-expanding shaft and the feeding rack, air filling of the air-expanding shaft and the like in the prior art are not needed, and the convenience of operation is greatly improved. Thirdly, the reverse feeding platform rotates downwards oppositely to the lifting platform, so that the lifting platform moves upwards to enable the cloth roll at the top of the lifting platform to be opposite to the involutory fastening device, and the reverse feeding platform rotates to enable one end, far away from the lifting platform, of the placing surface to be lower than one end, close to the lifting platform, of the placing surface, so that after the placing surface discharges materials at a low position, the placing surface discharges materials at a high position, the lifting platform is lifted, the high position and the involutory fastening device are matched with each other in a mutually-operated sequential mode, and the device can be conveniently recycled.

Drawings

FIG. 1 is a schematic view of the structure of a coating apparatus of the present invention.

Fig. 2 is a schematic structural view of the widening plate in a mortise-tenon joint state.

Fig. 3 is a schematic structural view of the innermost widening sheet and the adjacent widening sheet in a separated state in the present invention.

FIG. 4 is a schematic structural view of the mounting groove of the present invention in an open state.

Fig. 5 is an enlarged view of a portion a of fig. 4 according to the present invention.

Fig. 6 is a schematic structural view of the outermost cover plate in the invention in a non-covered state.

Fig. 7 is an enlarged view of a portion a of fig. 6 according to the present invention.

Fig. 8 is a schematic structural view of the innermost widening plate with the auxiliary mounting tenon and the adjacent widening plate in a separated state.

FIG. 9 is a schematic structural diagram of a composite meltblown fabric production apparatus of the present invention.

FIG. 10 is a schematic view of the structure of the feeding apparatus of the present invention.

FIG. 11 is a schematic diagram of a fabric roll in a lifting state in the feeding apparatus according to the present invention.

FIG. 12 is a schematic structural diagram of a fabric roll in the feeding apparatus of the present invention in a state of sliding down to a lifting platform.

FIG. 13 is a schematic side view of the cloth roll of the feeding apparatus of the present invention sliding down to the lifting platform.

FIG. 14 is a schematic side view of the feeding apparatus of the present invention in an unwound state.

FIG. 15 is a schematic view of the internal structure of the folding roller receiving cavity of the feeding frame in the feeding and feeding device of the present invention.

Fig. 16 is an enlarged view of portion a of fig. 13 in accordance with the present invention.

FIG. 17 is a schematic structural diagram of a closing roller body in the feeding device of the present invention.

FIG. 18 is a schematic view of the structure of the feeding and feeding device according to the present invention, wherein the cam is rotated to a state where the protruding portion of the cam protrudes out of the protrusion hole.

FIG. 19 is a schematic structural view of the feeding and feeding device of the present invention in a state where the second discharge gear is engaged with the first discharge gear.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Example 1

As shown in fig. 1 to 4, the present embodiment discloses a coating apparatus including a coating platform 61 and a blade 62. The scraper 62 is arranged above the coating platform 61, and may be arranged on a coating platform support 63, and a coating gap exists between the bottom of the scraper 62 and the top surface of the coating platform 61, and the cloth can pass through the coating gap.

Notches 611 are symmetrically formed in the two sides of the coating platform 61 in the width direction, and the projection of the scraper 62 in the vertical direction penetrates through the notches 611. A placing groove with an upward opening is arranged at the rear end of the notch 611. The placing groove is communicated with the notch 611, and the inner side wall of the placing groove is flush with the inner side wall of the notch 611. A support plate 613 is provided at the front end of the placement groove.

As shown in fig. 2, a mounting mortise 6111 is formed on the front inner wall of the notch 611. A plurality of widening plates 64 are arranged in the placing groove, the top surfaces of the widening plates 64 are flush with the top surface of the coating platform 61, one end of each widening plate 64 is provided with an installation tenon 641, and the widening plates 64 can move forwards until the installation tenons 641 are matched with the mortise and tenon joint of the installation mortise 6111. The plurality of widening plates 64 are in parallel contact with each other in sequence from inside to outside along the width direction of the coating platform 61, and the inner side surface of the innermost widening plate 64 is in contact with the inner side wall of the notch 611 and the inner side wall of the placement groove.

As shown in fig. 7, a cover plate 653 is limited in the placement groove, and the cover plate 653 and the widening plate 64 on the same side are the same in number and correspond to each other one by one. A return spring 68 is supported below the cover plate 653, and the return spring 68 can be returned until the top surface of the cover plate 653 is flush with the top surface of the coating platform 61, the rear end surface of the cover plate 653 is in contact with the rear inner wall of the placing groove, and the inner side surface of the innermost cover plate 653 is in contact with the inner side wall of the placing groove.

As shown in fig. 2 and 3, long guide grooves 645 are formed on the outer sides of all the widening plates 64, pushing projections 644 are provided on the inner sides of the other widening plates 64 except the innermost widening plate 64, and in two adjacent widening plates 64, the pushing projections 644 of the other widening plate 64 that are positioned at the outer position extend into the long guide grooves 645 of the other widening plate 64 that are positioned at the inner position and contact the front inner walls of the long guide grooves 645. In the same notch 611, the outer widening sheet 64 can be moved forward to bring all the widening sheets 64 on the inner side thereof to move forward simultaneously.

When the widening plate 64 is translated rearward until the rear end surface of the widening plate 64 comes into contact with the rear inner wall of the placement groove and the front end is supported on the support plate 613, the corresponding cover plate 653 can be restrained below the widening plate 64 and the corresponding return spring 68 is compressed.

When the widening plate 64 is translated forward to be in mortise-tenon joint, the front end face of the widening plate 64 contacts with the front inner wall of the notch 611, the widening plate 64 is dislocated with the corresponding cover plate 653, the rear end of the widening plate 64 is supported on the support plate 613, the rear end face of the widening plate 64 is flush with the rear inner wall of the support plate 613 or the rear end face of the widening plate 64 is behind the rear inner wall of the support plate 613, and the corresponding return spring 68 moves to return to drive the corresponding cover plate 653 to lift the top face of the cover plate 653 up to be flush with the top face of the coating platform 61 and the front end face of the cover plate 653 contacts with the rear end face of the corresponding widening plate 64.

The invention is described by taking a coating cloth as an example, and other materials, such as plastic plates or metal plates, sheets and the like in various prior art can be coated.

Before knife coating, the number of the widening plates 64 which need to be widened at two sides is adjusted according to the width of the cloth, the number of the widening plates 64 at two sides is preferably ensured to be consistent, all the widening plates 64 at the inner sides are driven to synchronously move forwards by moving the widening plate 64 which is positioned at the outermost position in the widening plate 64 selected at the same side forwards until the selected widening plate 64 moves forwards until the mounting tenon 641 is matched with the corresponding mounting mortise 6111, and as the front end surface of the widening plate 64 is in contact with the front end surface of the notch 611, the top surface of the widening plate 64 is flush with the top surface of the coating platform 61, the inner side surface of the widening plate 64 at the innermost side is in contact with the inner side wall of the notch 611 and the inner side wall of the placing groove, and the adjacent widening plates are in parallel contact from inside to outside, thereby realizing the seamless and same-height plane widening of the notch 611 area in the coating platform 61, and at the moment, the advancing widening plate 64 is dislocated with the corresponding cover plate 653, under the reset motion of the corresponding reset spring 68, the corresponding cover plate 653 is driven to lift upwards to the position where the top surface of the cover plate 653 is flush with the top surface of the coating platform 61, and the front end surface of the cover plate 653 is in contact with the rear end surface of the corresponding widening plate 64, and because the inner side surface of the innermost cover plate 653 is in contact with the inner side wall of the placing groove, and the cover plate 653 and the widening plate 64 on the same side are in the same number and in one-to-one correspondence, that is, two adjacent cover plates 653 are in sequential parallel contact in the width direction, the seamless and same-height plane closing of the opening generated on the placing groove after the widening plate 64 moves forwards is realized. The cloth is conveyed to the coating platform 61 from front to back, when the cloth is conveyed to the notch 611, two sides of the cloth in the width direction are respectively flush with two sides of the widened notch 611 area, the coating material is added to the upper surface of the cloth, after the cloth is conveyed backwards to pass through the coating gap, the coating material is uniformly coated on the surface of the cloth under the action of the scraper 62, and the redundant coating material flows towards two sides and flows down from the corresponding notch 611. When the widening plate 64 needs to move backwards and reset, the corresponding cover plate 653 is pressed downwards, the reset spring 68 is compressed and deformed, the widening plate 64 moves backwards and resets until the rear end face of the widening plate contacts with the rear inner wall of the placing groove, and the corresponding cover plate 653 is abutted to the lower side of the widening plate 64, so that the cover plate 653 is hidden.

Compared with the prior art, the coating device for knife coating the material has the following advantages that: firstly, the invention can adjust the width adjustment of the actual coating area of the coating platform 61 (namely, the area of the coating platform 61 with the notch 611) according to the actual amplitude of the material, so as to ensure that the edges of the two sides of the width direction of the material are respectively flush with the edges of the two sides of the area of the notch 611 after the width adjustment (namely, the outer edges of the widening plates 64 which participate in the widening and are at the outermost sides) in the vertical direction, and thus, after the knife coating, the redundant coating material can timely flow down from the corresponding notch 611 without causing the trouble of later cleaning and even influencing the normal coating of the next section of material like the prior art which is solidified on the coating platform 61. Secondly, because the pushing protrusions 644 of the outer widening plates 64 are inserted into the elongated guide grooves 645 of the inner widening plates 64, when the inner widening plates 64 are pushed forward, the pushing protrusions 644 of the inner widening plates 64 do not contact the outer pushing protrusions 644, and the outer widening plates 64 are not moved synchronously, and the pushing protrusions 644 of the outer widening plates 64 are always in contact with the inner walls of the elongated guide grooves 645 of the inner widening plates 64, and the outer widening plates 64 are moved forward to always move the inner widening plates 64 synchronously, so that when width adjustment is needed, all the inner widening plates 64 can be pushed to move synchronously without moving the other widening plates 64, the same notch 611 widening can be achieved by only one operation. Thirdly, when the widening plate 64 is moved out of the standing groove, it tends to cause an opening at the top of the standing groove, which is closed in order to achieve a smooth material transfer process. According to the invention, the cover plate 653 and the return spring 68 are arranged in the placing groove through the cover plate 653, so that when the widening plate 64 is translated forwards to be matched with the mortise and tenon joints, namely after the widening plate 64 is widened, the corresponding cover plate 653 is automatically driven to be lifted under the stretching and resetting action of the return spring 68 so as to cover the opening, and the support of the material conveying process and the conveying stability are ensured. Fourthly, because the front end surface of the widening plate 64 is in contact with the front end surface of the notch 611, the top surface of the widening plate 64 is flush with the top surface of the coating platform 61, the inner side surface of the innermost widening plate 64 is in contact with the inner side wall of the notch 611 and the inner side wall of the placing groove, and adjacent widening plates are in parallel contact from inside to outside in sequence, seamless and same-height plane widening of the notch 611 area in the coating platform 61 is realized; and because the inner side surface of the cover plate 653 at the innermost side is contacted with the inner side wall of the placing groove, the rear end surface of the cover plate 653 is contacted with the rear inner wall of the placing groove, the cover plate 653 and the widening plate 64 at the same side are the same in number and are in one-to-one correspondence, namely, the two adjacent cover plates 653 are contacted in parallel in the width direction in sequence, the seamless and same-height plane closing of the opening generated on the placing groove after the widening plate 64 moves forwards is realized, the no drop height of the material in the conveying process is realized, and the gap is reduced as much as possible. Fifthly, by adopting the structure of the invention, on the basis of meeting the function realization of each widening plate 64 and cover plate 653, the integration of each widening plate 64 and cover plate 653 on the coating platform 61 is realized, and the technical effect of convenient online adjustment is met.

As shown in fig. 1, a flow guide groove 66 is further provided at the bottom of the notch 611. According to the invention, through the arrangement of the guide grooves 66, the coating material flowing down from the corresponding notch 611 can be intensively guided to drop.

As shown in fig. 4 to 7, a first guide slider 692 and a second guide slider (not shown) which are vertically guided are respectively provided on the rear inner wall of the placement groove and the rear inner wall of the support plate 613. Also included are a moving plate 651, a straight plate 652. The two ends of the moving plate 651 are respectively in sliding fit with the corresponding first guide slider 692 and second guide slider, and the upper and lower ends of the straight plate 652 are respectively connected with the bottom of the cover 653 and the top of the moving plate 651. When the widening plate 64 is misaligned with the corresponding cover plate 653, the corresponding return spring 68 returns to move the corresponding cover plate 653 upward to raise the top surface of the cover plate 653 flush with the top surface of the coating platform 61 and the front end surface of the cover plate 653 in contact with and flush with the end surface of the corresponding widening plate 64.

Further, the upper and lower ends of the return spring 68 are connected to or in contact with the bottom surface of the moving plate 651 and the inner bottom wall of the placement groove, respectively.

Further, the return spring 68 is preferably a compression spring, or other prior art spring or resilient device.

The arrangement of the first guide slide block 692 and the second guide slide block ensures the stability of the cover plate 653 in the lifting process.

As shown in fig. 5, further, a shutter 693 is provided on both the rear inner wall of the placing groove and the rear inner wall of the support plate 613, and when the cover 653 is lifted up to the level of the top surface of the cover 653 with the top surface of the coating platform 61, the top surface of the moving plate 651 is brought into contact with the bottom surface of the shutter 693. The invention utilizes the baffle 693 for limiting, and ensures the accuracy of the position of the cover plate 653 after the cover plate 653 is lifted.

Further, when the cover 653 is lifted up to bring the top surface of the cover 653 flush with the top surface of the application platform 61, the return spring 68 is under compression. Since the return spring 68 is now compressed, it imparts an upward lifting force to the cover plate 653, and due to the presence of the stop 693, the cover plate 653 has only a tendency to move upward to counteract the tendency of the cover plate 653 to be depressed by the weight of the material.

Further, when cover 653 is positioned below the corresponding widening plate 64, i.e., the top surface of cover 653 is positioned just below the bottom surface of widening plate 64, the bottom surface of cover 653 contacts the top surface of stop 693.

Further, the baffle 693 is a first magnetic plate, and second magnetic plates are disposed on the bottom of the cover 653 and the top of the moving plate 651, and the first magnetic plate and the corresponding second magnetic plate are magnetically attracted to each other when contacting each other. By utilizing magnetic attraction, the stability of the current state of the cover plate 653 is improved.

As shown in fig. 3, a hand-held moving plate 646 is further provided at the bottom of the widening plate 64, so that it is convenient for the worker to manually move the widening plate 64.

As shown in fig. 5 and 8, further, an auxiliary mounting tenon 647 is arranged at the rear end of the widening plate 64, an auxiliary mounting mortise 6121 is arranged on the rear inner wall of the placing groove, and when the widening plate 64 is translated backwards until the rear end face of the widening plate 64 contacts with the rear inner wall of the placing groove, the auxiliary mounting tenon 647 is in mortise-tenon fit with the corresponding auxiliary mounting mortise 6121.

Further, a flexible layer such as a rubber sleeve is arranged on the auxiliary mounting tenon 647 or a rubber sleeve is arranged in the auxiliary mounting mortise 6121, and the degree of tightness of tenon-and-mortise fit between the auxiliary mounting tenon 647 and the corresponding auxiliary mounting mortise 6121 is increased through the rubber sleeve. Further ensuring that the advance of the inner widening sheet 64 does not advance the outer widening sheet 64.

Further, as shown in fig. 1, the coating apparatus further includes a feeding device including a feeding tube 671. The feed tube 671 is located above the coating platform 61 and the outlet of the feed tube 671 is located in front of the scraper 62, so that the coating material flowing out of the feed tube 671 can fall on the cloth of the coating platform 61.

The feeding end of the feeding pipe 671 can be communicated with the storage tank, the discharge port of the feeding pipe 671 faces downwards to the coating platform 61, the coating material in the storage tank is pumped into the feeding pipe 671 through the pump, and the feeding pipe 671 can be provided with a valve for adjusting the flow rate of the coating material flowing downwards.

Further, the feeding device further comprises a feeding screw 672 and a feeding sliding block 673, the feeding pipe 671 is arranged on the feeding sliding block 673, the feeding screw 672 is arranged above the coating platform 61, the axial direction of the feeding screw 672 is consistent with the width direction of the coating platform 61, and the feeding screw 672 is in threaded fit with the feeding sliding block 673. According to the invention, the feeding screw 672 can be driven to rotate by the rotation of a feeding screw motor (not shown in the figure), so that the movement of the feeding pipe 671 at two ends of the coating platform 61 in the width direction is realized, and the uniformity of the coating material under the condition of flowing is ensured. The feeding screw rod motor can be a servo motor or a stepping motor.

Further, the feeding screw 672 is matched with the coating platform bracket 63 in a rotating manner, a feeding slide bar 674 is further arranged on the coating platform bracket 63, and a feeding slide block 673 is matched with the feeding slide bar 674 in a sliding manner.

Further, the two parts which are mutually and rotatably matched can be rotatably connected through a bearing, for example, the feeding screw rod 672 and the coating platform bracket 63 are rotatably connected through a bearing, and of course, the two parts which are mutually and rotatably matched in the invention can also be rotatably connected in other prior art.

Further, the feeding screw 672 is a reciprocating screw. So, can realize reinforced lead screw motor unidirectional rotation, realize the reciprocating motion of filling tube 671.

Specifically, the fixed end of the feed screw motor can be fixed on the coating platform support 63, and the output shaft end of the feed screw motor is connected with the feed screw.

Further, the feed tubes 671 may be plural and spaced apart along the width of the coating platform 61.

Example 2

As shown in fig. 9, the embodiment discloses a production apparatus for composite melt-blown fabric, which sequentially comprises a feeding device 1, a coating device 6, a drying device 7, and a winding device 8 from front to back according to a process flow. Wherein, drying device, take-up device are prior art, and drying device is preferably tunnel oven. The coating device 6 is preferably the coating device of the above-described embodiment, but may be other prior art.

The feeding device 1 is used for conveying the cloth to the coating device 6, the coating device 6 is used for coating the cloth, the drying device 7 is used for drying the coated cloth, and the winding device 8 is used for winding the dried cloth.

As shown in fig. 10 and 11, the feeding device 1 includes an overturning feeding platform, a lifting platform 12, and a joining fastening device 13. The top of upset material loading platform is for placing face 1111, and upwards rotate upset material loading platform towards lift platform 12 and can cause lift platform 12 downstream, and the cloth roll on placing face 1111 can fall into the top to lift platform 12. The turning-over loading platform rotating downwards back to the lifting platform 12 can enable the lifting platform 12 to move upwards until the cloth roll at the top of the lifting platform 12 is opposite to the involution fastening device 13, and the turning-over loading platform rotates until the height of one end far away from the lifting platform 12 in the placing surface 1111 of the turning-over loading platform is lower than that of one end close to the lifting platform 12.

Two groups of involutory fastening devices 13 are symmetrically distributed on two sides of the lifting platform 12. Each pair of combining and fastening devices 13 comprises a combining roller body 131, an extruding movable block 132, a fastening piece and a combining roller driving device 134, the combining roller body 131 is in running fit with the combining roller driving device 134, the combining roller driving device 134 can drive the combining roller body 131 to extend out, the extruding movable block 132 is in running fit with the end part of the combining roller body 131, the extending movements of the combining roller bodies 131 on two sides can respectively extend into the paper tube 101 of the cloth roll from different ends of the cloth roll 1011, when the combining roller bodies 131 on two sides of the combining roller bodies on two sides extend out to be opposite, the two extruding movable blocks 132 mutually extrude and move into the inner cavity of the corresponding combining roller body 131, so that part of the fastening piece 133 extends out of the combining roller body 131 and is pressed against the inner wall of the paper tube 101.

When the loading and feeding device 1 is used for loading operation of the cloth roll, the position of the placing surface 1111 of the turnover and feeding platform is adjusted, specifically, the turnover and feeding platform is rotated until the turnover and feeding platform rotates to the position where one end of the placing surface 1111, far away from the lifting platform 12, is lower than the inclined surface of the placing surface 1111, near the lifting platform 12, at the end, far away from the lifting platform 12, so that the cloth roll is rolled onto the placing surface 1111, preferably, the inclined angle of the placing surface 1111 is within 30 degrees, the cloth roll can be stabilized on the placing surface 1111 under the action of friction force, of course, the cloth roll can be manually pressed to be balanced on the placing surface 1111, and after the turnover and feeding platform rotates upwards to the lifting platform 12 to form a horizontal plane, external force is lost. As shown in fig. 12 and 13, the turning loading platform is then rotated towards the lifting platform 12, the turning loading platform rotates upwards to drive the lifting platform 12 to move downwards, the turning loading platform rotates to a position, far away from the lifting platform 12, of one end of the placing surface 1111 to be higher than a height, close to one end of the lifting platform 12, of the placing surface 1111, until the turning loading platform rotates to a position, far away from the lifting platform 12, of one end of the placing surface 1111 to be higher than a height, close to one end of the lifting platform 12, of the placing surface 1111 to fall downwards to the top of the lifting platform 12 against the friction force, and preferably, when the cloth roll moves downwards against the friction force, the height, close to one end of the lifting platform 12, of the placing surface 1111 is not lower than the height of the top surface of the lifting platform 12. Then, the lifting platform 12 is reset to rotate and turn over the feeding platform, the lifting platform 12 moves upwards until the cloth roll is opposite to the involution fastening device 13, the involution fastening device 13 is started, after the involution roller bodies 131 on the two sides extend out to the two ends of the involution roller bodies to be oppositely closed, the two extrusion movable blocks 132 extrude and move to the inner cavities of the corresponding involution roller bodies 131, the parts of the fasteners 133 extend out of the corresponding involution roller bodies 131 and are pressed against the inner wall of the paper tube 101 of the cloth roll, the cloth roll is fastened, and the primary racking fastening feeding process of the cloth roll is completed.

If the cloth roll needs to be conveyed, the end part of the cloth roll can be connected with the cloth of a subsequent winding device by sewing, the cloth roll is driven to unwind by the winding motion of the winding device or the joining roller body 131 is driven by a motor to rotate to drive the cloth roll to actively unwind, so that the cloth unwound from the cloth roll is conveyed to the subsequent path.

Compared with the prior art, the loading and feeding device 1 for loading and fastening the cloth roll has the following advantages: firstly, the cloth roll can be put on the shelf at a low position, specifically, the cloth roll is placed on the placing surface 1111 of the turning and loading platform at the low position, the cloth roll falls from the placing surface 1111 to the top of the lifting platform 12 by utilizing upward turning of the turning and loading platform in cooperation with the descending motion of the lifting platform 12, and then the cloth roll is opposite to the involution fastening device 13 by utilizing the ascending motion of the lifting platform 12; therefore, the feeding adopts a two-step method, comprises two stages of low-position discharging and high-position lifting, realizes the low-position discharging of the fabric roll so as to save labor consumption caused by manual carrying, can be carried out in a stable manner in the lifting stage, and thoroughly abandons the step of manual lifting compared with the manner of directly lifting the fabric roll to the top of the lifting platform 12 and then lifting. The low-position discharging and high-position lifting movement of the invention are cooperatively matched, and the operation flexibility and the operation accuracy are higher. Secondly, in the fastening stage of the cloth roll of the invention, the fastening mode of the involution roller bodies 131 at two sides is adopted, the involution roller bodies 131 at two sides are always integrated on the feeding frame 14, after the involutory roller bodies 131 on the two sides extend to be oppositely combined, part of the fastener 133 extends out of the involutory roller bodies 131 and is pressed against the inner wall of the paper tube 101, the paper tube 101 is fastened by utilizing the friction force generated between the part of the fastener 133 and the inner wall of the paper tube 101, since the involution roller body 131 is rotationally matched with the involution roller driving device 134, when the involution roller body 131 actively rotates, the paper tube 101 can be driven to rotate to realize the unwinding of the cloth roll or when the cloth roll is unwound by the winding force of the subsequent winding device, the involution roller body 131 can be driven to rotate, of course, the unwinding of the fabric roll may be performed by the joint action of the joining roller body 131 actively rotating and unwinding by the winding force of the subsequent winding device. Thus, compared with the prior art in which the air expansion shaft is inserted into the paper tube 101, the following advantages are achieved: the involution roller body 131 is always integrated on the feeding frame 14, a plurality of air expansion shafts are not required to be configured, and the operation of inserting the air expansion shafts before the involution roller is mounted on the frame is not required; when the cloth roll is fastened, the involution roller bodies 131 on the two sides extend to be oppositely combined, so that part of the fastening piece 133 extends out of the involution roller bodies 131 and is pressed against the inner wall of the paper tube 101, the triple operations of connecting the involution roller bodies 131 on the two sides into a whole, fastening the cloth roll and rotationally matching the cloth roll with the feeding rack 14 can be realized at one time, the operations of involution of the air-expanding shaft and the feeding rack 14, air filling of the air-expanding shaft and the like in steps in the prior art are not needed, and the convenience of operation is greatly improved. Thirdly, the invention rotates the turning loading platform downwards opposite to the lifting platform 12, which can cause the lifting platform 12 to move upwards until the cloth coil 1011 at the top of the lifting platform 12 is opposite to the involutory fastening device 13, and the turning loading platform rotates until the position of one end of the placing surface 1111 far away from the lifting platform 12 is lower than the end close to the lifting platform 12, thereby realizing the sequential matching of operations such as placing surface 1111 at low position, placing surface 1111 at high position for blanking, and lifting platform 12 at low position for receiving material of the lifting platform 12, and the involutory fastening device 13 at high position after lifting platform 12, and facilitating the repeated recycling of the device.

As shown in fig. 10 and 11, further, the turnover feeding platform includes a turnover feeding platform body 113 and a turnover feeding platform driving device, the turnover feeding platform driving device includes a feeding connecting shaft 116 and a feeding swing arm 112, the two feeding connecting shafts 116 are respectively and rotatably fitted on two sides of the feeding rack 14, one end of the feeding swing arm 112 is fixedly sleeved on the feeding connecting shaft 116, the other end of the two feeding swing arms 112 is connected with the turnover feeding platform body 113, and the top of the turnover feeding platform body 113 is a placing surface 1111.

As shown in fig. 10 to 12, the lifting platform 12 includes a feeding rotating wheel 121, a feeding connecting rod 122, a feeding lifting rod 123, a lifting platform body 124, and a feeding vertical sliding rail 125, wherein the feeding rotating wheel 121 is fixedly sleeved on the feeding connecting shaft 116, one end of the feeding connecting rod 122 is eccentrically hinged to the feeding rotating wheel 121, the other end of the feeding connecting rod 122 is hinged to the lower end of the feeding lifting rod 123, the upper end of the feeding lifting rod 123 is fixedly connected to the lifting platform body 124, and the lifting platform body 124 is in sliding fit with the feeding vertical sliding rail 125 in the vertical direction.

The invention can drive the feeding connecting shaft 116 to rotate through the feeding connecting motor 117, the fixed end of the feeding connecting motor 117 can be fixed on the feeding frame 14, and the output shaft end of the feeding connecting motor 117 is connected with the feeding connecting shaft 116. When material loading connection motor forward rotation, drive material loading connecting axle 116 forward rotation, drive material loading swing arm 112 upswing, upset material loading platform body 113 is upwards rotated towards lift platform 12, and simultaneously, material loading connecting axle 116 forward rotation drives material loading and rotates wheel 121 forward rotation, through the transmission of material loading connecting rod 122, drives material loading lifter 123 along the direction downstream of the vertical slide rail 125 of material loading, drives lift platform body 124 and does the descending motion. When the material loading connecting motor rotates reversely, the material loading connecting shaft 116 is driven to rotate reversely, the material loading swing arm 112 is driven to swing downwards, the material loading platform body 113 is turned over to rotate downwards back to the lifting platform 12, the material loading rotating wheel 121 is driven to rotate reversely, the material loading lifting rod 123 is driven to move upwards along the direction of the material loading vertical slide rail 125 through the transmission of the material loading connecting rod 122, and the lifting platform body 124 is driven to move upwards. The feeding connection motor can be one of a servo motor, a stepping motor and a torque motor.

The device realizes the mechanical cooperation and integration of the lifting motion of the turnover feeding platform and the up-and-down swinging of the turnover feeding platform, realizes the accurate and controllable motion, and adds a power source for realizing the motion as little as possible.

As shown in fig. 14, a guide plate 129 is further connected to the feeding frame 14, a guide hole is formed in the guide plate 129, the guide hole is vertically communicated, and the upper end of the feeding lifting rod 123 is slidably fitted and extends out of the guide hole from bottom to top.

As shown in fig. 12, a blanking limiting groove 1241 is further formed on the lifting platform body 124, a projection of a central axis of the blanking limiting groove 1241 in the vertical direction coincides with a projection of a central axis of the closing roller body 131 in the vertical direction, and the bottom of the fabric roll falling into the lifting platform body 124 can be limited on the blanking limiting groove 1241.

Because the cloth lifting platform body 124 is further provided with the blanking limiting groove 1241, and the projection of the central axis in the vertical direction coincides with the projection of the central axis of the involution roller body 131 in the vertical direction, after the cloth roll rolls or slides on the lifting platform body 124 from the placing surface 1111, the limitation of the falling position of the cloth roll is ensured under the limiting effect of the blanking limiting groove 1241. Of course, when the cloth roll rolls off from the placement surface 1111 or slides off the lifting platform body 124, the cloth roll deviates, a material arranging plate, such as a splayed guide channel which is gradually narrowed near the lifting platform body 124, may be disposed on the placement surface 1111, and the cloth roll may be placed to deviate through the guiding and positioning function of the material arranging plate, or the cloth roll may be manually centered and prevented from sliding off the lifting platform body 124.

As shown in fig. 15 and 16, the joining roller driving device 134 further includes a joining roller driving cylinder 1341, a first feeding rack 1342, a first feeding gear 1343, a first feeding rotating shaft 1344, a second feeding rack 1345, a second feeding gear 1346, a feeding base 1347, and a feeding bearing 1348, a fixed end of the joining roller driving cylinder 1341 is disposed on the feeding frame 14, a piston rod end of the joining roller driving cylinder 1341 extends downward into a joining roller receiving cavity of the feeding frame 14 to be connected with the first feeding rack 1342, the first feeding rack 1342 is slidably fitted with the joining roller receiving cavity in a vertical direction, the first feeding gear 1343 is fixedly sleeved on the first feeding rotating shaft 1344, an end of the first feeding rotating shaft 1344 is rotatably fitted with the roller receiving cavity, and the first feeding gear 1343 is engaged with the first feeding rack 1342. The second feeding rack 1345 is in sliding fit with the closing roller accommodating cavity in the horizontal direction, the second feeding gear 1346 is fixedly sleeved on the first feeding rotating shaft 1344 and meshed with the second feeding rack 1345, a feeding base 1347 is arranged on the second feeding rack 1345, and the closing roller body 131 is in rotating fit with the feeding base 1347 through a feeding bearing 1348.

Preferably, the plurality of feeding bases 1347 are arranged at intervals along the length direction of the second feeding rack 1345, and each second feeding rack is provided with a feeding bearing 1348. The multiple feeding bases 1347 are rotationally matched with the joining roller body 131, so that the supporting function of the joining roller body 131 is improved.

According to the invention, the piston rod end of the involutory roller driving cylinder 1341 contracts upwards to drive the first feeding rack 1342 to move upwards, the first feeding gear 1343 is driven to rotate, the first feeding rotating shaft 1344 is driven to rotate, the second feeding gear 1346 is driven to rotate, the second feeding rack 1345 meshed with the second feeding gear 1346 is driven to extend outwards (in the position direction of the cloth roll), and the involutory roller bodies 131 on the two sides extend and involutory mutually.

By adopting the transmission matching device, the folding roller driving cylinder 1341 can move in a vertical direction to drive the folding roller body 131 to move in a horizontal direction in a telescopic mode, and compared with the mode that the folding roller body 131 is directly driven to move in a translational mode through the horizontal telescopic motion of the cylinder, the horizontal occupied area of the device is reduced, and the space utilization rate of the device is improved.

The mating roller driving cylinder 1341 of the present invention is preferably a servo cylinder.

As shown in fig. 17 to 18, an open cavity (i.e., the inner cavity of the joining roller body 131) is formed at one end of the joining roller body 131, an extending hole 1311 communicated with the open cavity is formed in a side surface of the joining roller body 131, the extrusion movable block 132 is in sliding fit with the open cavity, and the feeding elastic member 1349 is assembled so that a part of the extrusion movable block 132 is exposed out of the open cavity. The fastener 133 includes a cam, the cam is fixedly sleeved on the third feeding rotating shaft 13410 and can be completely limited in the open cavity, the third feeding rotating shaft 13410 is in running fit with the open cavity, and the extrusion movable block 132 moves inwards to the open cavity and can drive the cam to rotate until the convex part of the cam extends out of the extending hole 1311 and is pressed on the inner wall of the paper tube 101.

Further, both ends of the feeding elastic member 1349 may be disposed on the inner walls of the pressing movable block 132 and the opening chamber, respectively.

Preferably, the feeding elastic member 1349 may be a compression spring, and both ends of the compression spring are respectively abutted against or connected to the pressing movable block 132 and the inner wall of the opening cavity.

A first tooth part is arranged on the extrusion movable block 132, a transmission gear 134101 is fixedly sleeved on the third feeding rotating shaft 13410, and the transmission gear 134101 is meshed with the first tooth part. After the involution roller bodies 131 on the two sides are involuted, the two extrusion movable blocks 132 extrude each other to move towards the open cavity, the feeding elastic piece 1349 deforms, the extrusion movable blocks 132 move to drive the transmission gears 134101 engaged with the extrusion movable blocks to rotate, the third feeding rotating shaft 13410 is driven to rotate, the cam rotates until the protruding parts of the cam extend out of the extending holes 1311 and abut against the inner wall of the paper tube 101, and the realization of multiple functions of involution roller bodies 131 on the two sides, cloth roll fastening and cloth roll feeding relative to the rack 14 are realized.

Further, a rubber layer is provided at both ends of the pressing movable block 132 and at the convex portion of the cam. By utilizing the flexible deformability of the rubber layer, on one hand, the friction coefficient between the paper tube 101 and the cam is improved after the convex part is pressed against the inner wall of the paper tube 101; on the other hand, the generation of rigid or pointed contact between the convex portion and the inner wall of the paper tube 101 is avoided. The rubber layer at the end of the movable extrusion block 132 can reduce the impact force when the two movable extrusion blocks 132 contact.

Further, the end of the open cavity of the mating roller body 131 is provided with a concave-convex structure, and when the mating roller bodies 131 on both sides extend to be opposite to each other, the concave-convex structures of the mating roller bodies 131 on both sides are inserted into each other.

The concave-convex structures which are matched with each other are utilized to form a splicing structure or a mortise-tenon matching structure, so that the firmness of the folding roller bodies 131 on the two sides which form a whole after folding is ensured, and the movement synchronism of the folding roller bodies and the folding roller bodies is further realized. When the mating roller bodies 131 are used as the driving source, the consistency of synchronous rotation of the mating roller bodies 131 on both sides can be further improved by only arranging a motor for one of the mating roller bodies 131.

As shown in fig. 15 and 19, further, the feeding device further includes a closing roller rotation driving device, the closing roller rotation driving device includes a discharging driving motor 151 and a first discharging gear 152, a fixed end of the discharging driving motor 151 is fixed on the feeding frame 14, and an output shaft end of the discharging driving motor 151 is fixedly sleeved on the first discharging gear 152. The second discharging gear 153 is fixedly sleeved on the involution roller body 131, and the involution roller body 131 extends to move to enable the second discharging gear 153 to be meshed with the first discharging gear 152.

When the material roll needs to be unwound by taking the closing roller body 131 as an active driving source or by taking the closing roller body 131 as an active driving source to assist in winding of a subsequent winding device, the invention arranges the closing roller rotation driving device, when the closing roller body 131 extends out to a closing position, a second discharging gear 153 is fixedly sleeved on the closing roller body 131 and moves to a position meshed with the first discharging gear 152, and by starting the discharging driving motor 151, the discharging driving motor 151 rotates to drive the first discharging gear 152 to rotate, so that the second discharging gear 153 is driven to rotate, and further the rotation of the closing roller body 131 is realized. Therefore, the additional operation of bonding or interference fit of the roller and the output end of the motor is completely eliminated when the active unwinding of the cloth roll is required to be realized as in the prior art.

Example 3

The embodiment discloses a production method of a composite melt-blown fabric, which comprises the following steps:

feeding a PP melt-blown cloth roll to a feeding device;

step three, coating the PP melt-blown fabric;

step four, drying the coated PP melt-blown fabric;

and step five, winding and blanking the dried composite melt-blown fabric.

The first step comprises the following steps:

The coating liquid adopted in the third step comprises the following raw materials in percentage by mass: 5-8 parts of polyvinyl alcohol, 1-2 parts of chitosan, 1-2 parts of glacial acetic acid, 0.1-2 parts of titanium dioxide and 90-100 parts of water.

The preparation of the coating liquid comprises the following steps:

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A coating apparatus, characterized in that the coating apparatus comprises a coating platform, a doctor blade; the scraper is arranged above the coating platform; notches are symmetrically formed in the two sides of the coating platform in the width direction, and the projection of the scraper in the vertical direction penetrates through the notches; a placing groove with an upward opening is arranged at the rear end of the notch; the placing grooves are communicated with the corresponding gaps, and the inner side walls of the placing grooves are flush with the inner side walls of the gaps; a supporting plate is arranged at the front end of the placing groove;

the outer sides of all the widening plates are provided with strip-shaped guide grooves, the inner sides of other widening plates except the innermost widening plate are provided with pushing convex blocks, and in two adjacent widening plates, the pushing convex block of the widening plate positioned at the outer side extends into the strip-shaped guide groove in the widening plate positioned at the inner side and is in contact with the front inner wall of the strip-shaped guide groove; the widening plates positioned at the outer part move forwards to drive all the widening plates at the inner part to synchronously move forwards;

when the widening plate is translated backwards until the rear end face of the widening plate is contacted with the rear inner wall of the placing groove and the front end of the widening plate is supported on the supporting plate, the corresponding cover plate can be limited below the widening plate, and the corresponding return spring is compressed;

when the widening plate translates forward to the cooperation of tenon fourth of the twelve earthly branches, the preceding terminal surface of widening plate with the preceding inner wall contact of breach, the widening plate is staggered mutually with the apron that corresponds, the rear end of widening plate is supported in the backup pad just the rear end face of widening plate with the back inner wall of backup pad flushes or the rear end face of widening plate is in the rear of the back inner wall of backup pad, the reset spring reset motion that corresponds drive the apron that corresponds upwards promote to the top surface of apron with the top surface of coating platform flushes just the preceding terminal surface of apron contacts with the rear end face of the widening plate that corresponds.

2. The coating apparatus according to claim 1, wherein a first guide slider and a second guide slider which are vertically guided are respectively provided on the rear inner wall of the placement groove and the rear inner wall of the support plate; the device also comprises a moving plate and a straight plate; two ends of the moving plate are respectively in sliding fit with the corresponding first guide sliding block and the second guide sliding block, and the upper end and the lower end of the straight plate are respectively connected with the bottom of the cover plate and the top of the moving plate.

3. The coating apparatus as claimed in claim 2, wherein a baffle is provided on each of the rear inner wall of the placing groove and the rear inner wall of the supporting plate, and when the cover plate is lifted up to the level of the top surface of the cover plate with the top surface of the coating platform, the top surface of the moving plate is in contact with the bottom surface of the baffle.

4. The coating apparatus of claim 3 wherein a bottom surface of the cover plate contacts a top surface of the baffle plate when the cover plate is retained under the corresponding widening plate.

5. The coating device according to claim 4, wherein the baffle is a first magnetic plate, second magnetic plates are arranged on the bottom of the cover plate and the top of the moving plate, and the first magnetic plates and the corresponding second magnetic plates are in magnetic attraction with each other when in contact.

6. The coating apparatus of claim 1 wherein the bottom of said gap is provided with a channel.

7. The coating apparatus of claim 1 further comprising a feeding device comprising a feeding tube; the feed tube is located above the coating platform, and the coating flowing out of the feed tube can fall on the material to be coated of the coating platform.

8. A composite melt-blown cloth production device is characterized by sequentially comprising a feeding device, a coating device, a drying device and a winding device from front to back according to a process flow;

the coating device adopts the coating device of claim 1;

9. A production method using the composite melt-blown fabric production apparatus according to claim 8, characterized by comprising the steps of:

feeding a PP melt-blown cloth roll to a feeding device;

step three, coating the PP melt-blown fabric;

step four, drying the coated PP melt-blown fabric;

and step five, winding and blanking the dried composite melt-blown fabric.

10. The method of claim 9, wherein the first step comprises the steps of: