CN115893968A

CN115893968A - Overturning and stacking device for gypsum batten production and gypsum batten preparation method

Info

Publication number: CN115893968A
Application number: CN202211568271.8A
Authority: CN
Inventors: 王安全
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2023-04-04
Also published as: CN111454039B; CN111454039A; CN115784699A

Abstract

The invention discloses an overturning and stacking device for gypsum lath production, which comprises a stacking platform, wherein the stacking platform is arranged right opposite to one side of a conveying roller way of a gypsum lath conveying system, one side, adjacent to the conveying roller way, of the stacking platform is horizontally provided with an overturning shaft parallel to the conveying roller way, the overturning shaft is vertically and fixedly provided with at least two support arms, the two support arms are positioned on the same plane, the distance between the two support arms is smaller than the length of the lath, the overturning shaft control mechanism is connected with the overturning shaft and is used for controlling the overturning shaft to rotate, the support arms can sink into the surface of the conveying roller way when the overturning shaft drives the support arms to rotate downwards, and the overturning shaft can support and vertically overturn the lath onto the stacking platform when the support arms are driven to rotate upwards. Also discloses a gypsum batten preparation method realized by adopting the device. The invention can be used for the dry production and preparation of the gypsum lath, can realize the automatic production of a production line, and has the advantages of simple preparation material, simple process, high product strength, good quality, good process feasibility and the like.

Description

Overturning and stacking device for gypsum batten production and gypsum batten preparation method

The application is a divisional application of the patent of 'a gypsum lath prepared by dry process' of patent application No. 202010344011.7, application date 2020-04-27.

Technical Field

The invention belongs to the technical field of industrial gypsum production and recycling, and particularly relates to a preparation technology of an industrial byproduct gypsum lath.

Background

Gypsum, the main component of which is calcium sulfate, includes natural gypsum and industrial gypsum. The industrial gypsum, also called industrial byproduct gypsum, is a byproduct in some industrial production processes, mainly comprises two types, namely phosphogypsum and desulfurized gypsum, wherein the phosphogypsum accounts for more than half of the industrial byproduct gypsum. At present, the accumulated quantity of industrial by-product gypsum in China exceeds 3 hundred million tons, wherein the phosphogypsum reaches more than 2 hundred million tons. A large amount of industrial by-product gypsum is stockpiled, which not only occupies land, but also wastes resources, and the contained acidity and other harmful substances easily cause pollution to the surrounding environment, thus becoming an important factor restricting the sustainable development of phosphate fertilizer enterprises in China. The efficiency of developing and recycling the industrial byproduct gypsum is low at present, and the comprehensive utilization rate is only about 38%; therefore, the development of a secondary utilization technique for industrial by-product gypsum is still a subject of considerable research.

The industrial by-product gypsum product is a gypsum block, a gypsum brick, a gypsum board, a gypsum large wallboard, a plastering gypsum, a gypsum paper and other products which are prepared by taking industrial by-product gypsum as a main material. Because the industrial byproduct waste can be reused, the industrial byproduct gypsum product has lower production cost, better economic value and great environmental protection significance, and has wider development and utilization prospect. Particularly, gypsum boards (also called gypsum laths) and gypsum blocks are widely applied to buildings, and the existing gypsum laths and blocks are usually produced by adding water into gypsum, stirring the gypsum into slurry, and then casting the slurry, which is called wet production or slurry production. The product produced by the production method needs to be dried after being formed, the process is complex, the energy consumption is high, the energy-saving effect is poor, and the obtained product has low density and poor quality.

The inventor has previously applied for a production process of a full dry method desulfurized gypsum building material product of CN200710092850, and discloses that water with a crystal water ratio is directly added into anhydrous gypsum and semi-hydrated gypsum, and the anhydrous gypsum and the semi-hydrated gypsum are processed and formed in a high-pressure mode. Compared with wet production, the process is simpler, does not need drying, and the prepared product has higher density and better quality. But also has the defects of higher requirements on production equipment, more complex process and higher difficulty in controlling the quality of products.

CN201711112428 discloses a gypsum board and a preparation method thereof, and the gypsum board is produced by adopting an extrusion method in the patent, so that the process is simple. However, the gypsum board obtained by the method is obtained by adopting gypsum powder, various auxiliary materials and resin adhesive, and is bonded by the resin to provide bonding force, so that the board has low integral strength and poor quality.

In addition, CN200610127778 discloses a method for producing gypsum building products by using extrusion process, in which the gypsum product is produced by adding water to semi-hydrated gypsum and then extruding by means of an extruder, and the process is simpler. However, the following drawbacks still exist in this patent: 1 the process method has complex raw material formula components, and in addition to the gypsum powder, filler powder and various additives are added, so that the process complexity is increased, and the production cost is higher. 2 the process formula is added with the filler powder such as fly ash, fine sand and the like, and the plasticizer is also added as a setting material, if water is added in advance for mixing and stirring, the setting reaction is easy to generate and the process fluidity is influenced, so the process adds the mixing water at the position of an extrusion opening, but the water is difficult to be fully mixed and reacted with the semi-hydrated gypsum to generate the dihydrate gypsum, and the product quality is greatly reduced. 3 the process does not disclose the specific structure of the extruder and the device for conveying and cutting the parts, and has poor practicability.

In summary, how to provide a dry method gypsum lath production technology with simple raw materials, simple process, higher product quality and good feasibility becomes a problem to be considered and solved by the technical personnel in the field.

Disclosure of Invention

Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a gypsum lath prepared by dry method with simple preparation material, simple process, high product strength and good quality and good process feasibility. The invention also discloses a turnover stacking device for producing the gypsum lath and a gypsum lath preparation method.

In order to solve the technical problems, the invention adopts the following technical scheme:

the gypsum lath prepared by the dry method is characterized in that the gypsum lath is prepared by taking 68-76 parts by mass of semi-hydrated gypsum powder as a main material, adding 4-8 parts by mass of fiber material, 0.05-0.2 part by mass of retarder material and 20-25 parts by mass of mixing water, mixing uniformly, and then extruding and molding by a forced extruder.

Thus, the gypsum lath is produced by a dry method and is extruded to form, compared with a slurry method, the production process is simpler, and the manufactured lath has high density, good strength and higher quality. Meanwhile, the gypsum lath is simple in material, does not contain filler powder such as fly ash and fine sand, only adopts a small amount of fiber material to improve the breaking strength, avoids the product from being too brittle, and adopts a very small amount of retarder to adjust the gypsum setting time so as to facilitate cutting. The addition of a setting material is not needed in the formula, the main material of the semi-hydrated gypsum is converted into the dihydrate gypsum after being combined with the added mixing water, the setting hydration is completed under high pressure, the amount of the added mixing water is consistent with the amount of crystallization water needed for converting the semi-hydrated gypsum into the dihydrate gypsum, the semi-hydrated gypsum and the mixing water are fully stirred and uniformly mixed and then are forcibly extruded, compacted and formed, and are directly converted into the dihydrate gypsum, and extremely high hardness and strength can be obtained.

Preferably, the gypsum lath has the length of 2100mm or 3000mm, the width of 600mm and the thickness of 90mm or 120mm. The size meets the national standard requirements, and the product is more widely applied.

Preferably, the fiber material comprises 5 parts by mass of pulp fibers and 1 part by mass of glass fibers, wherein the length of the pulp fibers is less than 2mm, and the length of the glass fibers is less than 5mm.

If the integral proportion of the fibers is too high, the compressive strength of a final product is influenced, and if the proportion is too low, the brittleness and the fracture resistance of the product are insufficient. In the two fiber materials, the glass fiber has good strength, but the cost is higher, the smoothness of the surface of the product is insufficient, the roughness is high, the smooth extrusion degree of the product can be influenced even, the strength of the paper pulp fiber is relatively lower, but the cost is lower, and the smoothness of the surface of the product cannot be influenced. Therefore, the paper pulp fiber with a large proportion and the glass fiber with a small proportion are combined for use, so that the defects of the paper pulp fiber and the glass fiber are mutually compensated, the advantages are mutually complemented, the cost is reduced, and the final strength performance and the surface smoothness of the product are ensured.

As optimization, the retarder material adopts protein retarder, and the proportion is about 0.1 part by mass.

The protein retarder is specially prepared for gypsum setting adjustment, 0.1 mass part (0.1%) of the protein retarder is added, the retarding degree of the gypsum can be properly adjusted, the gypsum is extruded into a plate shape from an extruder, the plate shape cannot have too high hardness during cutting on a subsequent conveying device, the plate shape is beneficial to cutting, and the gypsum is completely set and hydrated after the cutting is finished so as to improve the product strength.

The gypsum lath is obtained by adopting the following preparation method, and comprises the following steps: mixing materials, namely adding a retarder into mixing water for mixing, and then stirring and uniformly mixing the semi-hydrated gypsum powder, the fiber material and the mixing water; b, extrusion molding, namely adding the mixed raw materials into an extruder, and extruding and molding under the pressure of 2-4 MPa/square centimeter, wherein the compression ratio of the extruder is 2.5: 1-3.5; c, conveying and cutting, namely conveying the extruded gypsum board forwards on a conveying roller way, and finishing transverse cutting of the gypsum board by adopting a synchronous follow-up cutting mode to obtain a gypsum batten meeting the size requirement; d, stacking and hydrating, stacking the cut gypsum laths, and obtaining the product after the hydration reaction is finished.

Thus, the gypsum lath product is produced and extruded by a dry method, and has the characteristics of simple process, high density of the manufactured lath, good strength and high quality.

And optimally, mixing water after the retarder is added into the raw materials in two parts, wherein most part of the mixing water is added and mixed uniformly in a spraying mode in the stirring process of the semi-hydrated gypsum powder and the fiber material, and a small part of the mixing water is input into the position of an outlet inner cavity of an extrusion head of an extruder by a conveying pipeline and is added to the surface of the gypsum board material.

Like this, most proportion's mix water is added with the mixing stirring of hemihydrate gypsum powder with the mode that sprays earlier for the mix water can be mixed more fully and evenly with the hemihydrate gypsum powder, and the partly mix water that lacks simultaneously can effectively restrain the hemihydrate gypsum powder and begin the complete hydration just before the extrusion and produce the condensation. Then a small part of mixing water is added at an outlet after the semi-hydrated gypsum powder is extruded and compacted by an extruder, and the mixing water with the small part of the mixing water can quickly permeate into the powder under the high pressure of the extruder after the mixing water is added, so that the proportion of enough crystal water is supplemented. The conversion of a part of hemihydrate gypsum to dihydrate gypsum is rapidly completed while the material is extruded, and the converted dihydrate gypsum has larger volume so as to extrude space and further improve the compactness of the plate. Simultaneously this small proportion's mix water can guarantee that extrusion head exit position has sufficient lubricated effect, guarantees extruding smoothly of material and generating the gypsum board. The optimal proportion of the mixing water in the two parts can be obtained through experimental verification, but on the whole, the proportion of the mixing water added firstly for stirring is larger than that of the mixing water added at the outlet position of the subsequent extrusion head.

As optimizing, the b step relies on the double helix extruder to realize, the double helix extruder has the shell that a level set up, be provided with two extrusion pivots in the shell side by side, there is the helical blade that sets up in the extrusion pivot, the shell rear end is provided with the extrusion motor, extrusion motor and two extrusion pivot transmission are connected and are driven two extrusion pivot relative rotations, the shell rear portion still is provided with the material entry, the shell front end has an extrusion section, both ends draw close towards the centre along forward direction about the extrusion section, the extrusion section front end links up the shaping section that has a horizontal straight section of thick bamboo structure and forms and extrudes the head, it is provided with the mix water and adds the structure to extrude the head position, mix water adds the structure and has the delivery port around extruding head inner chamber circumference and setting.

When the double-screw extruder is used, the gypsum powder materials mixed with the fiber materials and part of mixing water enter the inner cavity of the shell from the material inlet, the extrusion motor drives the two extrusion rotating shafts to rotate relatively, the helical blades on the extrusion rotating shafts stir the materials, and the materials are driven to move forwards and provide extrusion force. The materials are further fully stirred while moving forwards, so that part of the mixing water added in the previous process can be further fully mixed with the hemihydrate gypsum. The cross-sectional area of the material entering the extrusion section at the front end of the shell is gradually reduced, and the extrusion force is gradually increased. Then the material is extruded and is entered into and extrude the head, in extrude the head inner chamber material and another part mix water combination that adds, this part mix water permeate the material inside fast under high pressure and combine the dihydrate gypsum that generates closely knit state with the gesso step by step afterwards, then lean on and extrude head straight section inner chamber extrusion shaping panel appearance, the panel structure that generates enters into the rollgang in succession and carries out follow-up cutting process. Therefore, the double-screw extruder can well realize the dry extrusion forming of the gypsum lath. Wherein, the double helix structure can provide the great extrusion force of intensity, has stirring effect at the transported substance in-process by oneself simultaneously, can make the gypsum powder and the part mix water misce bene that adds earlier and produce certain preliminary hydration effect better, combines another part mix water behind the extrusion head position again, hydrates the formation partly dihydrate gypsum fast under the high pressure, has greatly improved the quality of extruding panel.

Furthermore, the inner cavity of the shell is provided with two cylindrical channels which are horizontally arranged in parallel, the middle parts of the two cylindrical channels are communicated, two extrusion rotating shafts are respectively and correspondingly arranged at the axes of the two cylindrical channels, and the outer ends of the spiral blades on the extrusion rotating shafts are arranged close to the inner cavity of the cylindrical channel.

Like this, pivot and helical blade can provide the extrusion force to the material better, guarantee the extrusion section and extrude the extrusion effect of first position.

Furthermore, the rear ends of the two extrusion rotating shafts can rotatably penetrate out of the shell, a pair of transmission gears meshed with each other is fixedly arranged on the part of the two extrusion rotating shafts penetrating out of the shell, and the extrusion motor is installed outside the rear end of the shell and is in transmission connection with any extrusion rotating shaft.

Therefore, two rotating shafts can be driven to synchronously and relatively rotate only by one extrusion motor, and the structure is simple and reliable.

Furthermore, the material inlet is positioned at the rear part of the shell, close to the rear end and is arranged right opposite to the middle position of the two extrusion rotating shafts.

Therefore, when falling into, the material just falls into the middle of the two extrusion rotating shafts, so that the material is favorably conveyed forwards after being dispersed by the two extrusion rotating shafts, and is also favorably and better stirred uniformly by the spiral blades on the two extrusion rotating shafts.

Furthermore, the upper end of the material inlet is provided with a feeding funnel with a large diameter end facing upwards in a butt joint mode. This facilitates better feeding.

Furthermore, a top cover is arranged on the upper portion of the feeding funnel to form a closed structure, one side of the top cover is provided with an extension section which extends horizontally outwards, the outer end of the extension section is open, the upper end of the feeding funnel is further connected with a metering conveying mechanism, and the output end of the metering conveying mechanism enters the inside of the top cover from the extension section.

The metering and conveying mechanism can realize metering and inputting of materials, further realize continuous production of a production line, and meanwhile, the top cover structure can prevent powder from volatilizing when falling.

Furthermore, the metering and conveying mechanism is an automatic metering and conveying belt. The metering control device has the advantages of simple structure and capability of better realizing metering control on input materials.

Further, the mixing water adding structure comprises a first water outlet located at the front part of the inner cavity of the extrusion section and a second water outlet located at the inner cavity of the forming section at the front end of the extrusion section, and the first water outlet and the second water outlet are arranged in the circumferential direction.

Like this, the mix water that gets into earlier through first delivery port can have more time to permeate the material inside, mixes and progressively generates the crystal water with inside half water gypsum powder under the high pressure better, and the mix water that the second delivery port got into when playing supplementary crystal water effect, still plays lubricated effect to bearing the shaping section inner chamber surface of maximum pressure position to make the slat can smoothly extrude. Simultaneously the second delivery port can guarantee that the slat has sufficient mix water and the reaction of the hemihydrate gypsum on slat surface generates partly dihydrate gypsum in advance in the moment of extruding for its surface layer shell can have sufficient hardness in order to do benefit to the shaping after the slat is extruded, makes things convenient for follow-up cutting and stack. And the interior of the batten needs to wait for a period of time until the internal mixing water is fully dispersed to each position to complete hydration, so that the hemihydrate gypsum at each position in the batten is converted into dihydrate gypsum to obtain a final product. Therefore, the arrangement of the two water outlets can better form the batten and improve the product quality.

Furthermore, the taper of the inner cavity of the front half section of the extrusion section is increased, and the first water outlet is positioned at the position where the taper of the inner cavity of the extrusion section is increased.

Like this, form pressure concentration position after will extrude half section inner chamber tapering increase in front of the section, the powder is carried this back pressure and is increased suddenly for the mixing water that enters into the inner chamber from this position can be better inside the powder fully permeates under the pressure effect.

Furthermore, a water interlayer is arranged at the front half section of the extrusion section, a first water outlet is formed at the front end opening of the water interlayer, and a first water inlet joint is connected and arranged outside the water interlayer.

Therefore, the first water outlet can better and conveniently discharge water forwards, and powder is prevented from entering the water outlet pipeline from the water outlet.

Furthermore, a second water inlet connector is connected and arranged outside the forming section, and the second water inlet connector is communicated with a second water outlet. Thus, the water can be conveniently fed into the second water inlet joint.

Furthermore, the outlet directions of the first water outlet and the second water outlet are both obliquely arranged forwards so that water can be discharged forwards. Therefore, the water can be discharged forward better, and the powder is prevented from entering the water outlet.

Furthermore, two side walls of the outlets of the first water outlet and the second water outlet are splayed from back to front. Therefore, the water outlet area can be better enlarged, and the mixing water and the materials can be fully combined.

Furthermore, the water outlet proportion of the first water outlet is larger than that of the second water outlet. More mixing water is earlier gone out water and is contacted with the powder in order better infiltration powder inside from first delivery port like this, and a small amount of water of second delivery port can keep forming section inner chamber surface lubrication in order to make things convenient for the panel basis, makes the panel surface layer water content sufficient simultaneously can form enough hardness can.

Furthermore, a core mold structure is arranged in the extrusion port, the core mold structure comprises an inner core which is horizontally arranged in the inner cavity of the extrusion port, the rear end of the inner core is fixed on a vertically arranged retainer, and the periphery of the retainer is fixedly arranged on the inner cavity of the extrusion section of the shell.

The inner core is used for forming the inner cavity of the batten, so that the batten forms a hollow structure and can better generate heat insulation effect as a building material.

Furthermore, the rear part of the inner core is positioned in the extrusion section and is in a frustum shape with the diameter of the end surface increasing forwards, and the front part of the inner core is positioned in the forming section and is in a straight cylinder shape.

Like this, the frustum shape at inner core rear portion can with the cooperation of extrusion section, increase the forward trend of narrowing of extrusion section inner chamber space cross-section, further make the increase of this regional pressure concentration, do benefit to here more that the mix water that gets into permeates the material inside at high pressure fast to can combine to generate the dihydrate gypsum with the hemihydrate gypsum better, improve the closely knit degree of panel and the even degree of quality better.

As optimization, the step c is realized by a conveying system, the conveying system comprises a conveying rack, a plurality of conveying rollers are arranged on the upper surface of the conveying rack at intervals and form a conveying roller way, the starting end of the conveying roller way is connected with the outlet of the extruding machine, and a synchronous follow-up cutting device is further arranged on the conveying rack; the synchronous follow-up cutting device comprises a portal frame transversely erected above the conveying rack, a longitudinal translation mechanism is arranged between the portal frame and the conveying rack and can drive the portal frame to horizontally move along the front and back directions of the conveying rack, and a cutting device is further arranged on the portal frame and used for transversely cutting the continuous slats.

Therefore, the portal frame can complete the following movement with the conveying roller way by the aid of the longitudinal translation mechanism, and the continuous laths are transversely cut off by the aid of the cutting device in the following process, so that the whole production line can realize flow line production, and production efficiency is improved.

Further, a mounting seat is arranged on a cross beam at the top of the gantry, a mounting arm extending downwards is arranged on the mounting seat, a rotatable disc cutter is vertically arranged at the lower end of the mounting arm, a space for accommodating the mounting seat and the disc cutter is reserved between at least one end of the cross beam and the conveying roller way, a cutting motor is further arranged on the mounting seat and is in transmission connection with the disc cutter, a mounting seat transverse translation mechanism used for driving the mounting seat to transversely translate is arranged between the mounting seat and the cross beam, and the height dimension from the rotating shaft of the disc cutter to the lower edge is larger than the thickness of the batten and enables the mounting seat to transversely translate to drive the disc cutter to complete cutting of the batten on the conveying roller way.

When the cutting device works, the cutting motor drives the disc cutter to rotate, and the mounting seat transverse translation mechanism controls the mounting seat to transversely translate, so that the continuous slats on the conveying roller way can be cut. Has the characteristics of simple structure and stable and reliable cutting.

Furthermore, a space for accommodating the mounting seat and the disc cutter is reserved between the end parts of the two ends of the cross beam and the conveying roller way.

Therefore, during cutting, the mounting seat moves along one direction, the disc cutter can completely cut off and pass through the batten, and then the mounting seat does return movement after the portal frame is reset backwards, so that secondary cutting of the batten can be realized. Therefore, the mounting seat can realize two cutting actions through one reciprocating motion, so that the work is more efficient.

Furthermore, the installation arm is arranged below one end of the installation seat in the transverse direction of the conveying roller way, the cutting motor is arranged above the other end of the installation seat, and an output shaft of the cutting motor is connected with the disc cutter through a belt mechanism to realize transmission.

Therefore, the transmission mechanism has the characteristics of simple structure and stable and reliable transmission.

Furthermore, the installation arms are provided with two installation arms which are arranged in parallel at intervals along the front and back directions of the conveying roller way, a cutter rotating shaft is rotatably arranged between the two installation arms, the disc cutter is installed on the cutter rotating shaft, and the output end of the belt mechanism is connected to the cutter rotating shaft.

Therefore, the stable bearing force of the disc cutter during cutting can be better guaranteed, and the stability and the reliability of the cutting process are guaranteed.

Furthermore, the installation seat transverse translation mechanism comprises two synchronous belt wheels arranged at the upper ends of the vertical arms on the two sides of the portal frame, any synchronous belt wheel is in transmission connection with a transverse translation motor installed on the portal frame, synchronous belts are installed on the two synchronous belt wheels in a sleeved mode, and the synchronous belts and the installation seat are fixed and drive the installation seat to transversely translate on a cross beam at the top of the portal frame.

Furthermore, a transverse guide rail is arranged on a beam at the top of the portal frame, and the lower end of the mounting seat is provided with a part which can be in sliding clamping fit with the transverse guide rail. Therefore, the stability of the mounting seat during transverse translation can be better ensured.

Furthermore, the longitudinal translation mechanism comprises a rack horizontally fixed on the conveyor frame, the length of the rack is equal to or greater than that of the batten, the longitudinal translation mechanism also comprises a longitudinal translation motor arranged on the portal frame, an output shaft of the longitudinal translation motor is in transmission connection with a longitudinal translation gear, and the longitudinal translation gear is meshed with the rack; the longitudinal translation mechanism also comprises a roller arranged at the lower end of a side arm of the portal frame, and the roller is supported and matched on a longitudinal guide rail which is longitudinally fixed on the conveying rack.

Therefore, the support and the longitudinal translation guide of the portal frame are completed by the matching of the rollers and the longitudinal guide rail. Meanwhile, the longitudinal translation gear is controlled to rotate on the rack by the longitudinal translation motor, the portal frame can be driven to longitudinally move along the conveying roller way, the accurate control of synchronous motion with the production line is well realized, and the cutting device can stably cut off the batten in a relatively static state. Has the advantages of simple structure, reliable transmission, accurate follow-up control and the like.

Furthermore, the longitudinal translation mechanism further comprises a telescopic cylinder for resetting, the telescopic cylinder for resetting is longitudinally arranged along the conveying roller way, one end of the telescopic cylinder for resetting is connected to the conveying rack, the other end of the telescopic cylinder for resetting is connected with the portal frame, a one-way transmission mechanism is arranged between an output shaft of the longitudinal translation motor and the longitudinal translation gear, and the one-way transmission mechanism is used for controlling the portal frame to realize one-way transmission forward along the conveying roller way.

Like this, the cutting back that finishes can rely on and reset with the telescoping cylinder to reset fast, improves work efficiency. During implementation, the telescopic cylinder for resetting preferably adopts a cylinder, so that the resetting is quicker and the cost is low.

Furthermore, the longitudinal translation mechanisms are provided with two sets and are respectively and symmetrically arranged on two sides of the portal frame.

Therefore, the longitudinal translation process of the portal frame can be more stable and reliable.

Furthermore, a section of follow-up roller way is connected and arranged in the conveying roller way above the longitudinal translation mechanism, the follow-up roller way comprises a roller seat sliding groove which is longitudinally arranged on the conveying rack, the length of the roller seat sliding groove is greater than that of the batten, a plurality of sliding roller seats are longitudinally slidably arranged in the roller seat sliding groove, sliding rollers are arranged on the sliding roller seats, the sliding rollers and the rollers fixedly arranged on the conveying roller way are positioned at the same horizontal height, folding connecting rods are vertically and rotatably hinged on the sliding roller seats, and the end parts of the folding connecting rods of the adjacent sliding roller seats are hinged and connected to form a telescopic connecting rod combination which longitudinally extends; the portal frame is located in the middle of the follow-up roller way, the front end and the rear end of the portal frame are respectively provided with one section of the telescopic connecting rod combination, one end of the telescopic connecting rod combination in the length direction is hinged on the portal frame, and the other end of the telescopic connecting rod combination is hinged on a carrier roller seat which is adjacent to the follow-up roller way and is fixedly arranged.

Therefore, in the process that the portal frame translates forwards along with the conveying roller way, the sliding roller seats at the front and the back of the portal frame are driven to move along with the telescopic connecting rod combination, the sliding roller seats in front of the portal frame are gradually closed, the distance between the sliding roller seats at the back of the portal frame is gradually lengthened, and stable support of slats above the portal frame can be achieved. And more importantly, the structure can ensure that the carrier rollers of the gantry frame in and below the advancing process can not keep a relative motion state any more and can be converted into a relative static state. When the cutting device on the portal frame works, the disc cutter can avoid the interference problem with the carrier roller, the disc cutter can cut downwards to exceed the distance of the lower surface of the batten, the cutting of the batten is realized more efficiently and reliably, and the cutting quality of the batten is improved.

Furthermore, each sliding roller seat is hinged with two folding connecting rods in a vertically rotatable manner, and the two folding connecting rods are arranged in an X shape in a crossed manner.

The telescopic motion process of the telescopic connecting rod combination formed in the way is more stable and reliable.

Furthermore, the follow-up roller way also comprises two follow-up carrier rollers which are arranged inside the portal frame at intervals in the front and back direction, the follow-up carrier rollers are arranged on a follow-up roller seat, the follow-up roller seat is slidably arranged in a roller seat chute and is fixedly connected with the portal frame, and a disc cutter of the cutting device is arranged right opposite to the middle of the interval position between the two follow-up carrier rollers.

Therefore, the two follow-up roller seats move back and forth along with the portal frame, so that when the disc cutter cuts, the front end and the rear end of the lath at the cutting position can be stably supported, and the cutting stability is better ensured.

As optimization, the upset stacking device that relies on in the rollgang front end to set up in d step realizes the upset stack of cutting back slat, the upset stacking device includes just to the stack platform that rollgang one side set up, one side level that stack platform and rollgang are adjacent is provided with a trip shaft parallel with the rollgang, the last vertical fixation of trip shaft is provided with two piece at least trailing arms, two trailing arms are located the coplanar and the interval is less than slat length, still include and link to each other with the trip shaft and control trip shaft pivoted trip shaft control mechanism, the trailing arm can sink into the rollgang surface when the trip shaft drives the trailing arm and rotates downwards, can hold up the slat and overturn perpendicularly to the stack platform when the trip shaft drives the trailing arm upwards to rotate.

Like this, can rely on upset to change control mechanism control trip shaft and rotate to rely on the trailing arm to carry the slat upset above that to the stack platform on, then the trailing arm resets and overturns next slat again, with this repeated realization slat from the automatic continuous undercarriage on the rollgang assembly line, do benefit to and realize the continuous automation mechanized operation of slat production.

Furthermore, the overturning shaft control mechanism comprises a stepping motor for overturning control, which is arranged on a support frame below the stacking platform, and an output shaft of the stepping motor for overturning control is in transmission connection with the overturning shaft through a belt mechanism. Therefore, the structure is simple, and the reciprocating rotation control of the overturning shaft can be stably and reliably realized.

Furthermore, the stacking platform is also provided with at least two stacking belts, the stacking belts are perpendicular to the conveying roller way and the upper surfaces of the stacking belts form stacking support surfaces, a gap for inserting a fork frame of a forklift is reserved between the lower part of the stacking support surface between the stacking belts and the support frame, belt wheels at one ends of the stacking belts are installed on the same belt wheel shaft, and the belt wheel shaft is in transmission connection with a stepping motor for controlling the stacking belts.

Therefore, the stepping motor for controlling the stacking belt can control the stacking belt to rotate discontinuously, so that the stacking support surface of the stacking belt can translate gradually, and the sequential arrangement and stacking of the slats on the stacking belt are completed. When the stacking belts are fully stacked with the full row of slats, the forks of a forklift can be inserted into the lower gap between the stacking belts to transfer and stack the entire row of slats. Therefore, the stacking belt can be matched with the turnover shaft to realize continuous stacking assembly line operation of the laths, and automation of operation is realized.

Furthermore, a belt wheel at one end, far away from the conveying roller way, of the stacking belt is installed on a belt wheel shaft, the belt wheel shaft is in transmission connection with a stepping motor for controlling the stacking belt through a transmission belt, and the stepping motor for controlling the stacking belt is fixedly installed on a support frame below the stacking belt.

The structural layout is more reasonable and reliable.

In conclusion, the invention can be used for dry production and preparation of the gypsum lath, can realize the automatic production of the production line, and has the advantages of simple preparation material, simple process, high product strength, good quality, good process feasibility and the like.

Drawings

FIG. 1 is a schematic view showing the construction of a gypsum lath production system used in the embodiment of the present invention.

FIG. 2 is a schematic view of the structure of a portion of the single twin screw extruder of FIG. 1.

FIG. 3 is a schematic view showing the structure of the extrusion head part at the front end of the twin-screw extruder of FIG. 2.

Fig. 4 is a schematic structural diagram of a part of the single synchronous follow-up cutting device in fig. 1.

Fig. 5 is a side view of fig. 4.

Fig. 6 is a side view of the single turn stacker portion of fig. 1.

Fig. 7 is a top view of fig. 6.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In the specific implementation: the gypsum lath prepared by the dry method has a rectangular overall appearance, the length range is 1500-4000mm, the width range is 400-800mm, and the thickness range is 60-150mm, wherein the gypsum lath is prepared by adopting 68-76 parts by mass of semi-hydrated gypsum powder as a main material, adding 4-8 parts by mass of fiber material, 0.05-0.2 part by mass of retarder material and 20-25 parts by mass of mixing water, mixing, stirring uniformly, and then forcibly extruding and forming by adopting an extruder.

Thus, the gypsum lath is produced by a dry method and is extruded to form, compared with a slurry method, the production process is simpler, and the manufactured lath has high density, good strength and higher quality. Meanwhile, the gypsum lath is simple in material, does not contain filler powder such as fly ash and fine sand, only adopts a small amount of fiber material to improve the breaking strength, avoids the product from being too brittle, and adopts a small amount of retarder to adjust the gypsum setting time so as to facilitate cutting. The main material of the hemihydrate gypsum is converted into the dihydrate gypsum after being combined with the added mixing water without adding an additional setting material in the formula, the condensation hydration is completed under high pressure, the amount of the added mixing water is consistent with the amount of crystallization water required for converting the hemihydrate gypsum into the dihydrate gypsum, the hemihydrate gypsum and the mixing water are fully stirred and uniformly mixed, then are forcibly extruded and densely formed, and are directly converted into the dihydrate gypsum, and extremely high hardness and strength can be obtained.

In practice, the gypsum lath has a length of 2100mm or 3000mm, a width of 600mm and a thickness of 90mm or 120mm. The size meets the national standard requirements, and the product is more widely applied.

In practice, the fiber material comprises 5 parts by mass of pulp fiber and 1 part by mass of glass fiber, wherein the length of the pulp fiber is less than 2mm, and the length of the glass fiber is less than 5mm.

If the overall proportion of the fibers is too high, the compressive strength of a final product is influenced, and if the proportion is too low, the product has high brittleness and insufficient fracture resistance. In the two fiber materials, the glass fiber has good strength, but the cost is higher, the smoothness of the surface of the product is insufficient, the roughness is high, the smooth extrusion degree of the product can be influenced even, the strength of the paper pulp fiber is relatively lower, but the cost is lower, and the smoothness of the surface of the product cannot be influenced. Therefore, the paper pulp fiber with a large proportion and the glass fiber with a small proportion are combined for use, so that the defects of the paper pulp fiber and the glass fiber are mutually compensated, the advantages are mutually complemented, the cost is reduced, and the final strength performance and the surface smoothness of the product are ensured.

When the retarder is implemented, the retarder material is protein retarder, and the proportion is about 0.1 part by mass.

The protein retarder is specially prepared for gypsum setting adjustment, 0.1 part by mass (0.1%) of the protein retarder is added, the retarding degree of the gypsum can be properly adjusted, the protein retarder is extruded into a plate shape from an extruder, the plate shape cannot have too high hardness when being cut on a subsequent conveying device, the plate shape is beneficial to cutting, and the protein retarder is completely set and hydrated after the cutting is finished so as to improve the product strength.

In implementation, the gypsum lath is obtained by adopting the following preparation method, and comprises the following steps: mixing materials, namely adding a retarder into mixing water for mixing, and then stirring and uniformly mixing the semi-hydrated gypsum powder, the fiber material and the mixing water; b, extrusion molding, namely adding the mixed raw materials into an extruder, and extruding and molding under the pressure of 2-4 MPa/square centimeter, wherein the compression ratio of the extruder is 2.5: 1-3.5; c, conveying and cutting, namely conveying the extruded gypsum board forwards on a conveying roller way, and finishing transverse cutting of the gypsum board by adopting a synchronous follow-up cutting mode to obtain a gypsum batten meeting the size requirement; d, stacking and hydrating, stacking the cut gypsum laths, and obtaining the product after the hydration reaction is finished.

The mixing water after the retarder is added is divided into two parts and added into the raw materials, wherein most part of the mixing water is added and uniformly mixed in a spraying mode in the stirring process of the semi-hydrated gypsum powder and the fiber material, and a small part of the mixing water is input into the position of an outlet inner cavity of an extrusion head of an extruder through a conveying pipeline and is added to the surface of the gypsum board material.

Like this, most proportion's mix water is added with the mixing stirring of hemihydrate gypsum powder with the mode that sprays earlier for the mix water can be mixed more fully and evenly with the hemihydrate gypsum powder, and the partly mix water that lacks simultaneously can effectively restrain the hemihydrate gypsum powder and begin the complete hydration just before the extrusion and produce the condensation. Then a small part of mixing water is added at an outlet after the semi-hydrated gypsum powder is extruded and compacted by an extruder, and the mixing water with the small part proportion can rapidly permeate into the powder under the high pressure of the extruder after being added, so that the proportion of sufficient crystal water is supplemented. The conversion of a part of hemihydrate gypsum to dihydrate gypsum is rapidly completed while the material is extruded, and the converted dihydrate gypsum has larger volume so as to extrude space and further improve the compactness of the plate. Simultaneously this small proportion's mix water can guarantee that extrusion head exit position has sufficient lubricated effect, guarantees extruding smoothly of material and generating the gypsum board. The optimal proportion of the mixing water can be obtained through experimental verification, but the proportion of the mixing water added into the mixing head is larger than that of the mixing water added into the outlet of the subsequent extrusion head.

In practice, the preparation method can be realized by the following gypsum batten production system, referring to fig. 1-7, the gypsum batten production system comprises a double-screw extruder for extruding and forming battens, the outlet of the double-screw extruder is connected with a conveying system, and the front end of the conveying system along the conveying direction is provided with an overturning and stacking device.

Wherein, step b relies on the double helix extruder to realize, see fig. 2-3, the double helix extruder has the shell 1 of a level setting, be provided with two extrusion pivot 2 in the shell 1 side by side, there is set up helical blade 3 on the extrusion pivot 2, the shell rear end is provided with extrusion motor 4, extrusion motor 4 and two extrusion pivot 2 transmission connection and drive two extrusion pivot relative rotations, shell 1 rear portion still is provided with material inlet 5, the shell front end has an extrusion section 6, both ends draw close towards the centre along forward direction about the extrusion section 6, extrusion section 6 front end links up the shaping section 7 of a horizontal straight tube structure and forms and extrudes the head, it adds the structure to extrude the head position, mix water and add the structure and have around extruding the delivery port that first inner chamber circumference set up.

When the double-screw extruder is used, gypsum powder materials mixed with fiber materials and part of mixing water enter the inner cavity of the shell from the material inlet, the extrusion motor drives the two extrusion rotating shafts to rotate relatively, and the helical blades on the extrusion rotating shafts stir the materials to drive the materials to move forwards and provide extrusion force. The materials are further fully stirred while moving forwards, so that part of the mixing water added in the previous process can be further fully mixed with the hemihydrate gypsum. The cross-sectional area of the material entering the extrusion section at the front end of the shell is gradually reduced, and the extrusion force is gradually increased. Then the material is extruded and is entered into and extrude the head, in extrude the head inner chamber material and another part mix water combination that adds, this part mix water permeate the material inside fast under high pressure and combine the dihydrate gypsum that generates closely knit state with the gesso step by step afterwards, then lean on and extrude head straight section inner chamber extrusion shaping panel appearance, the panel structure that generates enters into the rollgang in succession and carries out follow-up cutting process. Therefore, the double-screw extruder can well realize the dry extrusion forming of the gypsum lath. Wherein, the double helix structure can provide the great extrusion force of intensity, has stirring effect at the transported substance in-process by oneself simultaneously, can make the gypsum powder and the part mix water misce bene that adds earlier and produce certain preliminary hydration effect better, combines another part mix water behind the extrusion head position again, hydrates the formation partly dihydrate gypsum fast under the high pressure, has greatly improved the quality of extruding panel.

In the double-screw extruder, the inner cavity of the shell 1 is provided with two cylindrical channels which are horizontally arranged in parallel, the middle parts of the two cylindrical channels are communicated, two extrusion rotating shafts 2 are respectively and correspondingly arranged at the axes of the two cylindrical channels, and the outer ends of the helical blades on the extrusion rotating shafts are arranged close to the inner cavities of the cylindrical channels.

In the double-screw extruder, the rear ends of two extrusion rotating shafts 2 can rotatably penetrate out of the shell, a pair of mutually meshed transmission gears 8 are fixedly arranged on the parts of the two extrusion rotating shafts penetrating out of the shell, and the extrusion motor 4 is arranged outside the rear end of the shell and is in transmission connection with any extrusion rotating shaft.

In the double-screw extruder, a material inlet 5 is positioned at the rear part of a shell 1 and close to the rear end, and is arranged right opposite to the middle of two extrusion rotating shafts 2.

Wherein, the upper end of the material inlet 5 is provided with a feeding funnel 9 with a large diameter end facing upwards in a butt joint way. This facilitates better feeding.

In the double-screw extruder, a top cover 10 is arranged on the upper part of a feeding funnel 9 to form a closed structure, one side of the top cover is provided with an extension section which extends outwards horizontally, the outer end of the extension section is opened, the upper end of the feeding funnel is also connected with a metering conveying mechanism 11, and the output end of the metering conveying mechanism 11 enters the inside of the top cover from the extension section.

The metering and conveying mechanism can realize metering and inputting of materials, further realize continuous production of a production line, and meanwhile, the top cover structure can prevent dust volatilization when powder falls down.

Wherein, the measuring and conveying mechanism 11 is an automatic measuring and conveying belt. The metering control device has the advantages of simple structure and capability of better realizing metering control on input materials.

The mixing water adding structure comprises a first water outlet 12 located at the front part of an inner cavity of the extrusion section and a second water outlet 13 located in an inner cavity of the forming section at the front end of the extrusion section, and the first water outlet and the second water outlet are arranged in the circumferential direction.

Like this, the mix water that gets into earlier through first delivery port can have more times to permeate inside the material, mixes with inside hemihydrate gypsum powder and progressively generates the crystal water under high pressure better, and the mix water that the second delivery port got into plays supplementary crystal water effect simultaneously, still plays lubricated effect to bearing the shaping section inner chamber surface of maximum pressure position to make the slat can smoothly extrude. Simultaneously the second delivery port can guarantee that the slat has sufficient mix water and the hemihydrate gypsum reaction on slat surface earlier and generate partly dihydrate gypsum in the moment of extruding for its surface layer shell can have sufficient hardness in order to do benefit to the shaping after the slat is extruded, makes things convenient for follow-up cutting and stack. And the interior of the batten needs to wait for a period of time until the internal mixing water is fully dispersed to each position to complete hydration, so that the hemihydrate gypsum at each position in the batten is converted into dihydrate gypsum to obtain a final product. Therefore, the arrangement of the two water outlets can better form the strip plate and improve the product quality.

Wherein, the taper of the inner cavity of the front half section of the extrusion section 6 is increased, and the first water outlet 12 is positioned at the position where the taper of the inner cavity of the extrusion section is increased.

Like this, will extrude half section inner chamber tapering behind the increase and form pressure concentration position, the powder is carried this back pressure and is increased suddenly for the mix water that enters into the inner chamber from this position can be better inside the powder fully permeates under the pressure effect.

Wherein, the first half section of extrusion section is provided with the water interlayer, and water interlayer front end opening forms first delivery port 12, and the water interlayer external connection is provided with first water supply connector 14.

Wherein, the exterior of the forming section 7 is connected with a second water inlet joint 15, and the second water inlet joint 15 is communicated with the second water outlet 13. Thus, the water can be conveniently fed into the second water inlet joint.

Wherein, the outlet directions of the first water outlet and the second water outlet are both obliquely arranged forwards so that the water is discharged forwards (not shown in the figure). Therefore, the water can be discharged forwards better, and the powder is prevented from entering the water outlet.

Wherein, two side walls of the outlet of the first water outlet and the outlet of the second water outlet are in a splayed shape (not shown in the figure) which is enlarged from back to front. Therefore, the water outlet area can be better enlarged, and the mixing water and the materials can be fully combined.

In implementation, the water outlet ratio of the first water outlet 12 is greater than that of the second water outlet 13. More mixing water firstly flows out from the first water outlet and contacts with the powder to better permeate into the powder, a small amount of mixing water from the second water outlet can keep the surface of the inner cavity of the forming section to be lubricated so as to facilitate the base of the plate, and meanwhile, the water content of the surface layer of the plate is sufficient and enough hardness can be formed.

In the double-screw extruder, a core mold structure is also arranged in the extrusion port, the core mold structure comprises an inner core 16 which is horizontally arranged in the inner cavity of the extrusion port, the rear end of the inner core 16 is fixed on a retainer 17 which is vertically arranged, and the periphery of the retainer 17 is fixedly arranged on the inner cavity of the extrusion section 6 of the shell.

Wherein, the rear part of the inner core 16 is positioned in the extrusion section and is in a frustum shape with the diameter of the end surface increasing forwards, and the front part of the inner core 16 is positioned in the forming section and is in a straight cylinder shape.

During implementation, the step c is realized by a conveying system, the conveying system comprises a conveying rack 18, a plurality of conveying rollers 19 are arranged on the upper surface of the conveying rack 18 at intervals and form a conveying roller way, the starting end of the conveying roller way is connected with the outlet of the extruding machine, and a synchronous follow-up cutting device is further arranged on the conveying rack, as shown in the graph 4-5; the synchronous follow-up cutting device comprises a portal frame 20 transversely erected above the conveying rack, a longitudinal translation mechanism is arranged between the portal frame 20 and the conveying rack and can drive the portal frame 20 to horizontally move in the front-back direction of the conveying rack, and a cutting device is further arranged on the portal frame 20 and used for transversely cutting the continuous slats 21.

Wherein, be provided with mount pad 22 on the crossbeam at portal frame 20 top, the installation arm 23 that has a downwardly extending on the mount pad 22, the vertical rotatable disc cutter 24 of installing 23 lower extreme of arm, leave the space that supplies to hold mount pad and disc cutter 24 between at least one end tip of crossbeam and the rollgang, still be provided with cutting motor 25 on the mount pad, cutting motor 25 and the transmission of disc cutter 24 are connected, be provided with the horizontal translation mechanism of mount pad that is used for driving the horizontal translation of mount pad between mount pad 22 and the crossbeam, disc cutter 24 pivot is greater than slat 21 thickness and makes the horizontal translation of mount pad can drive the cutting of the last slat of rollgang is accomplished to the disc cutter.

Therefore, when the cutting device works, the cutting motor drives the disc cutter to rotate, and the mounting seat transverse translation mechanism is used for controlling the mounting seat to transversely translate, so that the continuous ribbon board on the conveying roller way can be cut. Has the characteristics of simple structure and stable and reliable cutting.

Wherein, all leave the space that supplies to hold mount pad and disc cutter between the both ends tip of crossbeam and the rollgang.

Therefore, during cutting, the mounting seat moves along one direction, the disc cutter can be completely cut off and passes through the lath, and then after the portal frame is reset backwards, the mounting seat does return movement again and can realize secondary cutting off of the lath. Therefore, the mounting seat can realize two cutting actions by one-time reciprocating motion, so that the work is more efficient.

Wherein, the installation arm 23 is arranged below one end of the installation seat along the transverse direction of the conveying roller way, the cutting motor is arranged above the other end of the installation seat, and the output shaft of the cutting motor 25 is connected with the disc cutter 14 through a belt mechanism to realize transmission.

Wherein, the installation arm 23 has two, and two installation arms 23 set up side by side along rollgang fore-and-aft direction interval, rotationally sets up the cutter pivot between two installation arms 23, and disc cutter 24 installs in the cutter pivot, and the belt mechanism output is connected in the cutter pivot.

Therefore, the stable bearing force of the disc cutter during cutting can be better ensured, and the stability and the reliability of the cutting process are ensured.

Wherein, mount pad horizontal translation mechanism is including setting up in two synchronous pulley 26 of portal frame both sides vertical arm upper end, and arbitrary synchronous pulley 26 is connected with a horizontal translation motor 27 transmission of installing on the portal frame, and the hold-in range is established to two synchronous pulley 26 shanks, and hold-in range and mount pad are fixed and drive mount pad horizontal translation on the portal frame top crossbeam.

Wherein, a transverse guide rail 28 is arranged on a beam at the top of the portal frame, and the lower end of the mounting seat 22 is provided with a part which can be in sliding clamping fit with the transverse guide rail 28. Thus, the stability of the mounting seat during transverse translation can be better ensured.

The longitudinal translation mechanism comprises a rack 29 horizontally fixed on the conveyor rack 18, the length of the rack 29 is equal to or greater than that of the batten, the longitudinal translation mechanism further comprises a longitudinal translation motor 30 installed on the portal frame, an output shaft of the longitudinal translation motor 30 is in transmission connection with a longitudinal translation gear 31, and the longitudinal translation gear 31 is meshed with the rack 29; the longitudinal translation mechanism further comprises a roller 32 arranged at the lower end of a side arm of the portal frame, and the roller 32 is supported and matched on a longitudinal guide rail 33 longitudinally fixed on the conveyor frame.

Therefore, the support and the longitudinal translation guide of the portal frame are completed by the matching of the rollers and the longitudinal guide rail. Meanwhile, the longitudinal translation gear is controlled to rotate on the rack by the longitudinal translation motor, the portal frame can be driven to move longitudinally along the conveying roller way, the accurate control of the synchronous motion with the production line is well realized, and the cutting device can stably cut off the slats in a relatively static state. The servo-actuated servo-actuator has the characteristics of simple structure, reliable transmission, accurate follow-up control and the like.

The longitudinal translation mechanism further comprises a telescopic cylinder 34 for resetting, the telescopic cylinder 34 for resetting is longitudinally arranged along the conveying roller way, one end of the telescopic cylinder 34 for resetting is connected to the conveying rack 18, the other end of the telescopic cylinder is connected with the portal frame 20, a one-way transmission mechanism is arranged between an output shaft of the longitudinal translation motor and the longitudinal translation gear, and the one-way transmission mechanism is used for controlling the portal frame to realize one-way transmission forward along the conveying roller way.

Like this, after the cutting finishes, can rely on the telescoping cylinder for reseing to reset fast, improve work efficiency. During implementation, the cylinder is preferably adopted as the telescopic cylinder for resetting, the resetting is quicker and the cost is low.

Wherein, the longitudinal translation mechanism has two sets and is respectively and symmetrically installed at two sides of the portal frame 20.

The roller bed above the longitudinal translation mechanism is provided with a section of follow-up roller bed in a connecting manner, the follow-up roller bed comprises a roller seat sliding groove which is longitudinally arranged on the conveyor rack, the length of the roller seat sliding groove is greater than that of the batten, a plurality of sliding roller seats 35 are arranged in the roller seat sliding groove in a longitudinally sliding manner, sliding rollers are arranged on the sliding roller seats 35, the sliding rollers and the rollers fixedly arranged on the roller bed are positioned at the same horizontal height, the sliding roller seats 35 are hinged with folding connecting rods 36 in a vertically rotatable manner, and the ends of the folding connecting rods 36 of the adjacent sliding roller seats are hinged and connected to form a telescopic connecting rod combination extending longitudinally; the portal frame 20 is located in the middle of the follow-up roller way, the front end and the rear end of the portal frame are respectively provided with one section of the telescopic connecting rod combination, one end of the telescopic connecting rod combination in the length direction is hinged on the portal frame, and the other end of the telescopic connecting rod combination is hinged on a roller seat of a carrier roller, which is adjacent to the follow-up roller way and is fixedly arranged.

Therefore, in the process that the portal frame translates forwards along with the conveying roller way, the sliding roller seats in front of and behind the portal frame are driven to move along with the telescopic connecting rod combination, the sliding roller seats in front of the portal frame are gradually closed, the distance between the sliding roller seats in the rear of the portal frame is gradually lengthened, and stable support of the upper slats can be achieved. And more importantly, the structure can ensure that the carrier rollers of the gantry frame in and below the advancing process can not keep a relative motion state any more and can be converted into a relative static state. Like this on the portal frame cutting device during operation, the interference problem with the bearing roller can be avoided to the disc cutter, and the disc cutter can go out the distance that surpasss the slat lower surface downwards, realizes cutting off the slat more high-efficiently reliably, improves the cutting quality to the slat.

Wherein, each sliding roller seat 35 is hinged with two folding connecting rods 36 in a vertically rotatable manner, and the two folding connecting rods are arranged in an intersecting manner to form an X shape.

The follow-up roller way further comprises two follow-up carrier rollers 37 which are arranged inside the portal frame at intervals in the front-back direction, the follow-up carrier rollers 37 are installed on a follow-up roller seat, the follow-up roller seat is installed in a roller seat sliding groove in a sliding mode and is fixedly connected with the portal frame, and the disc cutter 24 of the cutting device is arranged right opposite to the middle of the interval position between the two follow-up carrier rollers 37.

In implementation, the step d includes a stacking platform 38 just facing one side of the rollgang, a turning shaft 39 parallel to the rollgang is horizontally arranged on one side of the stacking platform 38 adjacent to the rollgang, at least two support arms 40 are vertically and fixedly arranged on the turning shaft 39, the two support arms 40 are positioned on the same plane, the distance between the two support arms is smaller than the length of the slats, the turning shaft control mechanism is connected with the turning shaft and controls the turning shaft to rotate, when the support arms 40 are driven by the turning shaft 39 to rotate downwards, the support arms can sink into the surface of the rollgang, and when the support arms 40 are driven by the turning shaft to rotate upwards, the slats can be supported and vertically turned onto the stacking platform 38.

Like this, can rely on the upset to change control mechanism control trip shaft and rotate to on the slat upset to the stack platform that relies on the trailing arm to carry it on, then the trailing arm resets and overturns next slat again, with this repeated realization slat from the automatic continuous undercarriage on rollgang assembly line, do benefit to and realize the continuous automation operation of slat production.

The overturning shaft control mechanism comprises a stepping motor 41 for overturning control arranged on a support frame below the stacking platform, and an output shaft of the stepping motor 41 for overturning control is in transmission connection with the overturning shaft through a belt mechanism. Therefore, the structure is simple, and the reciprocating rotation control of the overturning shaft can be stably and reliably realized.

The stacking platform is further provided with at least two stacking belts 42, the stacking belts 42 are perpendicular to the conveying roller way and form stacking supporting surfaces on the upper surfaces of the stacking belts, a gap for inserting a fork frame of a forklift is reserved between the lower portion of the stacking supporting surface between the stacking belts 42 and the supporting frame, belt wheels at one ends of the stacking belts 42 are installed on the same belt wheel shaft 43, and the belt wheel shaft 43 is in transmission connection with a stepping motor 44 for controlling the stacking belts.

Therefore, the stacking belt can be controlled to rotate discontinuously by the stepping motor for controlling the stacking belt, so that the stacking supporting surface of the stacking belt can translate gradually, and the sequential arrangement and stacking of the slats on the stacking belt are completed. When the stacking belts are fully stacked with the full row of slats, the forks of a forklift can be inserted into the lower gap between the stacking belts to transfer and stack the full row of slats. Therefore, the stacking belt can be matched with the turnover shaft to realize continuous stacking assembly line operation of the laths, and automation of operation is realized.

Wherein, the belt wheel of the stacking belt 42 far away from one end of the conveying roller way is arranged on a belt wheel shaft 43, the belt wheel shaft is in transmission connection with a stepping motor 44 for controlling the stacking belt through a transmission belt, and the stepping motor 44 for controlling the stacking belt is fixedly arranged on a support frame below the stacking belt.

The structural layout is more reasonable and reliable.

Claims

1. The utility model provides a upset bunching device for gypsum lath production, a serial communication port, including the stack platform that just sets up to gypsum lath conveying system's rollgang one side, the adjacent one side level of stack platform and rollgang is provided with a trip shaft parallel with the rollgang, vertical fixation is provided with two piece at least trailing arms on the trip shaft, two trailing arms are located the coplanar and the interval is less than lath length, still include and link to each other with the trip shaft and control trip shaft pivoted trip shaft control mechanism, the trailing arm can sink into the rollgang surface when the trip shaft drives the trailing arm and rotates downwards, the trip shaft can hold up the lath and overturn perpendicularly to the stack platform when driving the trailing arm upwards to rotate.

2. An overturning and stacking device for gypsum lath production as claimed in claim 1, wherein the overturning shaft control mechanism comprises an overturning control stepping motor mounted on the support frame below the stacking platform, and the output shaft of the overturning control stepping motor is in transmission connection with the overturning shaft through a belt mechanism.

3. The turning stacking device for gypsum lath production as claimed in claim 1, wherein at least two stacking belts are further disposed on the stacking platform, the stacking belts are disposed perpendicular to the roller conveyor and the upper surfaces of the stacking belts form a stacking support surface, a gap for inserting the fork of the forklift is left between the lower portion of the stacking support surface and the support frame between the stacking belts, a belt wheel at one end of the stacking belts is mounted on the same belt wheel shaft, and the belt wheel shaft is in transmission connection with a stepping motor for controlling the stacking belts.

4. The inverted stacking apparatus for gypsum lath production as claimed in claim 3, wherein the belt wheel of the end of the stacking belt away from the conveying roller way is mounted on a belt wheel shaft, the belt wheel shaft is in transmission connection with a stepping motor for controlling the stacking belt through a transmission belt, and the stepping motor for controlling the stacking belt is fixedly mounted on the support frame below the stacking belt.

5. The preparation method of the gypsum lath is characterized by comprising the following steps: mixing materials, namely adding a retarder into mixing water for mixing, and then stirring and uniformly mixing the semi-hydrated gypsum powder, the fiber material and the mixing water; b, extrusion molding, namely adding the mixed raw materials into an extruder, and extruding and molding under the pressure of 2-4 MPa/square centimeter, wherein the compression ratio of the extruder is 2.5: 1-3.5; c, conveying and cutting, wherein the extruded gypsum board is conveyed forwards on a conveying roller way, and transverse cutting of the gypsum board is completed in a synchronous follow-up cutting mode to obtain a gypsum batten meeting the size requirement; d, stacking and hydrating, stacking the cut gypsum laths, and obtaining the product after the hydration reaction is finished.

6. The method for preparing gypsum lath as claimed in claim 5, wherein the mixing water after the addition of the retarder is added to the raw materials in two parts, wherein the majority of the mixing water is added by spraying during the mixing of the semi-hydrated gypsum powder and the fiber material, and the minority of the mixing water is delivered to the position of the outlet cavity of the extrusion head of the extruder by a delivery pipe and added to the surface of the gypsum board material.

7. The method for preparing gypsum lath according to claim 5, wherein step d is carried out by using the turn-over stacking device for gypsum lath production as claimed in claim 1, 2, 3 or 4.