CN112519173B - Hot bending bend cladding formula 3LPE coating equipment - Google Patents
Hot bending bend cladding formula 3LPE coating equipment Download PDFInfo
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- CN112519173B CN112519173B CN202011286028.8A CN202011286028A CN112519173B CN 112519173 B CN112519173 B CN 112519173B CN 202011286028 A CN202011286028 A CN 202011286028A CN 112519173 B CN112519173 B CN 112519173B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/151—Coating hollow articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
- B29C48/337—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
- B29C48/338—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location using a die with concentric parts, e.g. rings, cylinders
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- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of hot-bending bend cladding type 3LPE coating type production, in particular to hot-bending bend cladding type 3LPE coating equipment, which comprises a die body and a driving device for driving the die body to adjust the angle; the mould body is enclosed to form a cavity in the shape of an annular horn mouth; an annular AD runner, an annular PE runner, a discharging cavity, an adjusting ring A and an adjusting ring B are arranged in the die body; a plurality of bolts are arranged in the radial direction of the adjusting ring A and the adjusting ring B, and the bolts are used for enabling the outer side widths of the AD runner and the PE runner to be larger than the corresponding inner side widths; the driving device comprises a controller, a supporting piece for supporting the die body, a first driving piece for driving the die body to move up and down, a second driving piece for driving the die body to adjust left and right, and a third driving piece for driving the second driving piece to move up and down. Through this coating equipment, can effectively solve the inhomogeneous problem of anticorrosive coating thickness of the inside and outside both sides coating of hot bending bend.
Description
Technical Field
The invention relates to the technical field of hot-bending bend cladding type 3LPE coating type production, in particular to hot-bending bend cladding type 3LPE coating equipment.
Background
The bottom layer of the coating of the anticorrosion elbow pipe coating technology is an epoxy powder anticorrosion coating which is in contact with the surface of the elbow pipe, the middle layer is a copolymerization adhesive with a branch structure functional group, and the surface layer is a high-density polyethylene anticorrosion coating. The 3PE anticorrosive coating integrates the characteristics of high impermeability, high mechanical property and the like of epoxy resin and polyethylene materials. In the prior art, the polyethylene tape is manually wound when the 3PE external corrosion prevention is carried out on the bent pipe, so that continuous production cannot be realized, and the efficiency is extremely low.
In the prior art, a chinese utility model patent document with publication No. CN209955261U and publication date of 2020, 01, 17 is proposed to solve the above existing technical problems, and the technical solution disclosed in this patent document is as follows: the utility model provides a compound cladding mould that is used for outer anticorrosive of return bend 3PE, including the die body of mould, the die body is the cylinder, be equipped with gluing agent feed inlet and PE feed inlet on the die body, be connected with gluing agent extruder and PE extruder respectively, be equipped with two annular gluing agent die cavities and PE die cavities in the die body, and two annular PE runners and gluing agent runner, between PE runner and the PE die cavity, through porous intercommunication between gluing agent runner and the gluing agent die cavity, and be equipped with PE adjusting bolt and gluing agent adjusting bolt who adjusts the commodity circulation speed in intercommunicating pore department, the front side of die body is equipped with the discharge gate, both sides are equipped with preceding flange and the back flange that is used for adjusting gluing agent die cavity and PE die cavity ejection of compact speed around the die body.
In the actual use process, the following problems can occur in the technical scheme:
(1) because the hot-bending bend has particularity and irregularity, position change of three dimensions can appear in the coating process, and in this scheme, the mould body is fixed knot structure, can not swing according to the transmission of hot-bending bend, can not guarantee its and the return bend clearance position between. Because the pipe body of the elbow pipe is in the conveying process, the linear velocities of the inner side and the outer side of the outer wall of the elbow pipe are different, the linear velocity of the outer side, namely the linear velocity of the outer arc direction, is greater than the linear velocity of the inner side, the moving range of the outer side is increased due to the large curvature radius, the quantitative anticorrosive coating is thinned, and finally the difference of the thicknesses of the inner side and the outer side anticorrosive coatings of the elbow pipe is large, so that the anticorrosive standard of the elbow pipe cannot be met.
（2）
Between PE runner and the PE die cavity, through porous intercommunication between gluing agent runner and the gluing agent die cavity, though be equipped with PE adjusting bolt and gluing agent adjusting bolt of adjusting the logistics velocity in intercommunicating pore department, but the distribution in hole can be inhomogeneous when can making the material follow PE runner flow direction PE die cavity, when following gluing agent runner flow direction gluing agent die cavity to this material can flow out again after carrying out interim storage in corresponding PE die cavity and gluing agent die cavity, can weaken adjusting bolt's speed governing effect. The adjusting speed of the front flange and the rear flange can only adjust the overall speed of material outflow in the PE die cavity and the adhesive die cavity, the local speed cannot be adjusted, and the outer side extrusion amount is equal to the inner side extrusion amount for the bent pipe. However, in the conveying process of the elbow pipe body, the linear speeds of the inner side and the outer side of the outer wall of the elbow pipe are different, the linear speed of the outer side, namely the linear speed of the outer arc direction, is larger than the linear speed of the inner side, the moving range of the outer side is increased due to the large curvature radius, the quantitative anticorrosive coating is thinned, and finally the thickness difference of the inner side and the outer side anticorrosive coatings of the elbow pipe is large, so that the anticorrosive standard of the elbow pipe cannot be met.
Disclosure of Invention
In order to solve the technical problem, the invention provides 3LPE coating equipment for coating a hot-bending bend, which can effectively solve the problem of uneven thickness of an anticorrosive layer coated on the inner side and the outer side of the hot-bending bend.
The invention is realized by adopting the following technical scheme:
the utility model provides a 3LPE coating equipment of hot bending bend cladding formula which characterized in that: comprises a die body and a driving device for driving the die body to adjust the angle; the die body is enclosed to form a cavity in an annular horn mouth shape, and the inner diameter of the cavity at the head part of the die body is smaller than that of the cavity at the tail part of the die body; an annular AD runner, an annular PE runner, a discharging cavity for converging the PE runner and the AD runner, an adjusting ring A for adjusting the width of the AD runner and an adjusting ring B for adjusting the width of the PE runner are arranged in the die body; a plurality of bolts are arranged in the radial direction of the adjusting ring A and the adjusting ring B, the bolts are used for adjusting the width of the outer sides of the AD runner and the PE runner to be larger than the corresponding width of the inner sides of the AD runner and the PE runner, and the width of the outer sides is the width close to one side of the outer arc of the bent pipe; the driving device comprises a controller, a supporting piece used for supporting the die body, a first driving piece used for driving the die body to move up and down, a second driving piece used for driving the die body to adjust left and right, and a third driving piece used for driving the second driving piece to move up and down, wherein the controller is used for controlling the opening and closing of the first driving piece, the second driving piece and the third driving piece, so that the concentricity of the die body and the bent pipe is kept.
The second driving part comprises a first electric push rod and a second electric push rod which are positioned on the same horizontal plane, and the front ends of the first electric push rod and the second electric push rod are respectively connected with the head part and the tail part of the die body.
The third driving part comprises two electric screw rods, screw rod input shafts of the two electric screw rods are connected through a coupler and driven by the same speed reducing motor, and the rear ends of the first electric push rod and the second electric push rod are connected with nuts of the two electric screw rods respectively.
The gantry type electric screw driver is characterized by further comprising a gantry, wherein two sliding rails are arranged on the side face of one side of the gantry, corresponding sliding blocks are arranged on the sliding rails, and the rear ends of the first electric push rod and the second electric push rod are connected with a screw nut of the electric screw rod through the sliding blocks respectively.
The support piece includes ear seat and chain block, the surface top at the mould body is fixed to the ear seat, first driving piece is the lead screw adjusting device who fixes on the crossbeam of portal, chain block one end is fixed with the ear seat, and the other end is fixed with lead screw adjusting device for hang the mould body.
A core die A, a core die B and a mouth die are coaxially arranged in the die body; an annular AD flow channel is formed between the core mold A and the core mold B, an annular PE flow channel is formed between the core mold B and the mouth mold, and a discharging cavity is formed between the core mold A and the mouth mold; and a discharge hole of the discharge cavity is communicated with a cavity at the head part of the die body.
The mold also comprises a shunting block A and a shunting block B, wherein the shunting block A and the shunting block B are respectively attached and embedded on the core mold A and the core mold B.
A heat sensor hole, a temperature sensor positioned in the heat sensor hole and a heating hole for inserting a heating rod are arranged in the core die A; and a heating ring is arranged outside the die body.
Still be equipped with mould body A and mould body B in the mould body, mould body A and mould body B all have convex structure.
The mould body is provided with a level gauge.
Compared with the prior art, the invention has the beneficial effects that:
1. the hot bending machine comprises a die body and a driving device for driving the die body to adjust the angle, and the thickness of an anticorrosive coating coated on the hot bending machine is ensured to be uniform from two aspects. On the one hand, under drive arrangement's effect for the change of three dimension about the mould body can be about from top to bottom, and with the return bend concentricity that remains throughout, at return bend coating in-process, the discharge gate of mould body can carry out real-time adjustment according to the position of return bend, can guarantee the clearance position of hot bending elbow and mould body. On the other hand, because a plurality of bolts are along the radial setting of adjustable ring A and adjustable ring B, through the bolt of adjusting inside and outside both sides, can make AD runner and PE runner's outside width all be greater than its inboard width that corresponds for the return bend body is in transportation process, and the outside extrusion volume is greater than the inboard, makes return bend body anticorrosive coating's inside and outside thickness unanimous, accords with the standard.
The cavity that the mould body encloses to close the formation is annular horn mouth form, and the discharge gate is narrower relatively, and the structure and the return bend cooperation of annular horn mouth form are good, adapts to different pipe diameter specifications, is particularly suitable for being used for irregular return bend and return bend both ends to have the processing scene of straight tube section, and the cavity internal diameter of afterbody is big, and the home range is wider, can avoid body and mould body afterbody to take place to interfere for the coating of anticorrosive coating is effectual.
2. The second driving piece is including first electric putter and the second electric putter that is located on same horizontal plane, first electric putter and second electric putter's front end links to each other with the head and the afterbody of mould body respectively, not only can realize that the mould body is whole to be controlled from side to side, can also realize the horizontal hunting of mould body, make this physical stamina of mould swing that deflects, angular adjustment's precision is higher, and because first electric putter and second electric putter are located same horizontal plane, the mould body is whole to be controlled from side to side or the horizontal hunting is more stable, be convenient for better regulation and control hot bending pipe and the interstitial position of mould body, the coating effect of anticorrosive coating is better.
3. The third driving piece comprises two electric screw rods, the screw rod input shafts of the two electric screw rods are connected through a coupler and driven by the same speed reduction motor, the rear ends of the first electric push rod and the second electric push rod are respectively connected with the nuts of the two electric screw rods, the third driving piece can drive the first electric push rod and the second electric push rod to lift simultaneously, the first electric push rod and the second electric push rod are always located on the same horizontal plane, the head and the tail of the die body are guaranteed to be level, the first electric push rod, the second electric push rod and the center of the die body are prevented from being not located on the same horizontal plane, and the phenomenon of easy blocking during movement occurs.
4. The side of one side of the portal is equipped with two slide rails, is equipped with the slider that corresponds on the slide rail, first electric putter and second electric putter's rear end links to each other with the screw of electric lead screw through the slider respectively for the portal can play further supporting role to first electric putter and second electric putter, guarantees first electric putter and second electric putter's stability, and has the restraint to first electric putter and second electric putter in the ability vertical direction, and the structure operation is also more stable.
5. Support piece includes ear seat and chain block, the surface top at the mould body is fixed to the ear seat, first driving piece is for fixing the lead screw adjusting device on the portal crossbeam, chain block one end is fixed with the ear seat, and the other end is fixed with lead screw adjusting device for hang the mould body, portal from the top support mould, electric screw's bearing is less, and reciprocates in step, and the thrust that the second driving piece needs also reduces greatly, can effectively avoid when supporting the mould from the bottom, the mould twists reverse the support piece card dead condition that leads to the bottom all around and take place, also can avoid when supporting the mould from the bottom, the support piece mould when reciprocating takes place with the difficult condition of adjusting of return bend drive line holding level.
6. A core die A, a core die B and a mouth die are coaxially arranged in the die body; an annular AD runner is formed between the core mold A and the core mold B, an annular PE runner is formed between the core mold B and the mouth mold, and a discharging cavity is formed between the core mold A and the mouth mold, so that the mold body is more reasonable in structure, the AD material flows along the outer wall of the core mold A at the bottom layer, the PE material flows along the outer wall of the core mold B through gravity, and the PE material is converged with the AD material at the cross corner of the core mold B, so that the two materials are obviously layered when being converged, cannot be thoroughly mixed, and the corrosion prevention requirement is prevented from being influenced. The discharge gate in ejection of compact chamber is linked together with the cavity of mould body head department, and the material that flows from the discharge gate can not hinder, directly flows to the body outer wall on, and the layering is obvious, prevents AD material and PE material thorough mixing. In addition, in the invention, the materials are converged in the discharging cavity, air outlets are not needed, and air cannot be filled between the materials, so that all layers of the anticorrosive coating are firmly bonded.
7. The shunting block A and the shunting block B are respectively attached and embedded on the core mold A and the core mold B, so that stacking, shunting and diversion can be prevented, pressure loss in the AD runner and the PE runner is reduced, and the temperature of materials in the AD runner and the PE runner is prevented from being greatly reduced.
8. The core die A is internally provided with a heating hole for inserting a heating rod, the outside of the die body is also provided with a heating ring, and the dual guarantee can effectively solve the problem of material temperature reduction in the flow channel, be convenient for maintaining the material temperature in the die body and enable the material to be in a molten flowing state in the die body. A heat sensor hole and a temperature sensor positioned in the heat sensor hole are formed in the core die A, so that real-time temperature can be fed back conveniently, and the temperature of materials in the flow channel can be controlled better.
9. The die body A and the die body B are arranged in the die body and assembled with parts in the die body, and are used for supporting the core die A, the adjusting ring A, the core die B, the adjusting ring B, the mouth die and the like in the die body, so that the whole structure is firmer and the sealing performance is good. All be equipped with boss column structure on mould body A and the mould body B, can avoid the connecting bolt of other parts, make the connection overall arrangement more reasonable
10. The mould body is provided with the level gauge, so that whether the centers of the first electric push rod, the second electric push rod and the mould are in the same level or not can be measured in time, and the clamping is avoided during movement.
Drawings
The invention will be described in further detail with reference to the following description taken in conjunction with the accompanying drawings and detailed description, in which:
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic elevational view of the present invention;
FIG. 3 is a schematic structural view of a mold body according to the present invention;
FIG. 4 is a schematic plan view of the present invention in cooperation with a transport member;
FIG. 5 is a schematic elevational view of the invention in cooperation with a transport;
the labels in the figure are:
1. the die comprises a die body, 2, a conveying piece, 3, a bent pipe, 4, a gantry, 5, a chain block, 6, a screw rod adjusting device, 9, a first electric push rod, 10, a second electric push rod, 11, an electric screw rod, 12, a coupler, 13, a speed reducing motor, 14, a slide rail, 15, a slide block, 16, a screw nut, 17, a connecting block, 18, a cavity, 19, an AD feeding port, 20, a PE feeding port, 21, a core die A, 22, an adjusting ring A, 23, a core die B, 24, an adjusting ring B, 25, a die, 26, a die body A, 27, a die body B, 28, a sealing ring, 29, an AD flow channel, 30, a PE flow channel, 31, a discharging cavity, 32, a shunting block A, 33, a shunting block B, 34, a heating hole, 35 and an ear seat.
Detailed Description
Example 1
As a basic embodiment of the invention, the invention comprises hot-bending bend cladding type 3LPE coating equipment which comprises a die body 1 and a driving device for driving the die body 1 to adjust the angle. The mould body 1 encloses to form a cavity 18 in a shape of an annular horn mouth, and the inner diameter of the cavity 18 at the head part of the mould body 1 is smaller than that of the cavity 18 at the tail part. An annular AD flow channel 29, an annular PE flow channel 30, a discharge cavity 31 for enabling the PE flow channel 30 and the AD flow channel 29 to be converged, an adjusting ring A22 for adjusting the width of the AD flow channel 29 and an adjusting ring B24 for adjusting the width of the PE flow channel 30 are arranged in the die body 1. The radial of adjustable ring A22 and adjustable ring B24 all is equipped with a plurality of bolts, and the regulation through the bolt makes AD runner 29 and PE runner 30's outside width all be greater than its corresponding inboard width, the outside width is for being close to the width on one side of the outer arc of return bend 3.
The driving device comprises a controller, a supporting piece used for supporting the die body 1, a first driving piece used for driving the die body 1 to move up and down, a second driving piece used for driving the die body 1 to adjust left and right, and a third driving piece used for driving the second driving piece to move up and down, wherein the controller is used for controlling the opening and closing of the first driving piece, the second driving piece and the third driving piece, so that the die body 1 and the bent pipe 3 keep concentricity. The support piece can be the dolly that is equipped with the universal wheel, first driving piece is fixed on the dolly, can be electronic lead screw or pneumatic cylinder, supports mould body 1 from the bottom, and mould body 1 top does not have the support. The second driving part and the third driving part can be respectively positioned on additional mounting tables, the second driving part can be an electric push rod, and the third driving part can be an electric lead screw.
Example 2
As a preferred embodiment of the present invention, the present invention includes a hot-bending pipe cladding type 3LPE coating apparatus, which includes a mold body 1 and a driving device for driving the mold body 1 to adjust an angle. The mould body 1 encloses to form a cavity 18 in a shape of an annular horn mouth, and the inner diameter of the cavity 18 at the head part of the mould body 1 is smaller than that of the cavity 18 at the tail part. An annular AD flow channel 29, an annular PE flow channel 30, a discharge cavity 31 for enabling the PE flow channel 30 and the AD flow channel 29 to be converged, an adjusting ring A22 for adjusting the width of the AD flow channel 29 and an adjusting ring B24 for adjusting the width of the PE flow channel 30 are arranged in the die body 1. The other ends of the AD runner 29 and the PE runner 30 are respectively connected with an external AD extruder and an external PE extruder through heating hoses.
The radial of adjustable ring A22 and adjustable ring B24 all is equipped with a plurality of bolts, the regulation of bolt is used for making AD runner 29 and PE runner 30's outside width all be greater than its inboard width that corresponds, the outside width is for being close to the width on one side of the outer arc of return bend 3.
The driving device comprises a portal 4, a controller, a supporting piece used for supporting the die body 1, a first driving piece used for driving the die body 1 to move up and down, a second driving piece used for driving the die body 1 to adjust left and right, and a third driving piece used for driving the second driving piece to move up and down, wherein the controller is used for controlling the first driving piece, the second driving piece and the third driving piece to open and close so that the die body 1 and the bent pipe 3 keep concentricity.
The second driving part comprises a first electric push rod 9 and a second electric push rod 10 which are positioned on the same horizontal plane, and the front ends of the first electric push rod 9 and the second electric push rod 10 are respectively connected with the head part and the tail part of the die body 1. The third driving part comprises two electric lead screws 11, and lead screw input shafts of the two electric lead screws 11 are connected through a coupler 12 and driven by the same speed reducing motor 13. Two sliding rails 14 are arranged on the side face of one side of the door frame 4, corresponding sliding blocks 15 are arranged on the sliding rails 14, and the rear ends of the first electric push rod 9 and the second electric push rod 10 are connected with a nut 16 of the electric lead screw 11 through the sliding blocks 15 respectively.
Support piece includes ear seat 35 and chain block 5, the surface top at mould body 1 is fixed to ear seat 35, first driving piece is for fixing lead screw adjusting device 6 on the crossbeam of portal 4, 5 one end of chain block are fixed with ear seat 35, and the other end is fixed with lead screw adjusting device 6 for hang mould body 1.
Example 3
As another preferred embodiment of the present invention, the present invention includes a hot-bending pipe cladding type 3LPE coating apparatus, which includes a die body 1 and a driving device for driving the die body 1 to adjust an angle. The mould body 1 encloses to form a cavity 18 in a shape of an annular horn mouth, and the inner diameter of the cavity 18 at the head part of the mould body 1 is smaller than that of the cavity 18 at the tail part. The mould body 1 is provided with an AD feed port 19 and a PE feed port 20, a core mould A21, an adjusting ring A22, a core mould B23, an adjusting ring B24 and a mouth mould 25, an annular AD runner 29 is formed between the core mould A21 and the core mould B23, an annular PE runner 30 is formed between the core mould B23 and the mouth mould 25, and a discharging cavity 31 is formed between the core mould A21 and the mouth mould 25. AD runner 29 is located PE runner 30 inboard, AD runner 29 is linked together with AD feed inlet 19, and PE runner 30 is linked together with PE feed inlet 20, AD runner 29 and PE runner 30 other end converge in ejection of compact chamber 31, the other end of AD feed inlet 19 and PE feed inlet 20 is continuous with outside AD extruder, PE extruder through the heating hose respectively. The discharge hole of the discharge cavity 31 is communicated with the head part of the cavity 18.
Still include reposition of redundant personnel piece A32 and reposition of redundant personnel piece B33, reposition of redundant personnel piece A32 is located AD runner 29, and reposition of redundant personnel piece B33 is located PE runner 30, just reposition of redundant personnel piece A32 and reposition of redundant personnel piece B33 paste respectively and inlay on the outer wall of mandrel A21 and mandrel B23, are used for respectively carrying out the water conservancy diversion to the commodity circulation in AD runner 29 and the PE runner 30 and shunts.
The radial of adjustable ring A22 and adjustable ring B24 all is equipped with a plurality of bolts, and the regulation through the bolt makes AD runner 29 and PE runner 30's outside width all be greater than its corresponding inboard width, the outside width is for being close to the width on one side of the outer arc of return bend 3.
In order to maintain the temperature of the material in the PE runner 30 and the AD runner 29 so that the material inside the mold body 1 is in a molten flowing state, a heat sensor hole, a temperature sensor positioned in the heat sensor hole, and a heating hole 34 for inserting a heating rod are provided in the core mold a 21; and a heating ring is arranged outside the die body 1.
The driving device comprises a controller, a supporting piece used for supporting the die body 1, a first driving piece used for driving the die body 1 to move up and down, a second driving piece used for driving the die body 1 to adjust left and right, and a third driving piece used for driving the second driving piece to move up and down, wherein the controller is used for controlling the opening and closing of the first driving piece, the second driving piece and the third driving piece, so that the die body 1 and the bent pipe 3 keep concentricity.
Example 4
As the best mode for carrying out the invention, the invention comprises hot-bending bend cladding type 3LPE coating equipment which comprises a die body 1 and a driving device for driving the die body 1 to adjust the angle. Referring to the attached figure 3 of the specification, the whole die body 1 is cylindrical, the inner wall of the die body 1 is enclosed to form a cavity 18 in a shape of an annular horn mouth, and the inner diameter of the cavity 18 at the head part of the die body 1 is smaller than that of the cavity 18 at the tail part of the die body 1. The elbow 3 sequentially enters from the cavity 18 at the tail part of the die body 1 and passes out from the cavity 18 at the head part of the die body 1. The inner diameter of the tail part of the die body 1 is large, the moving range is wider, and the interference between the tube body and the die body 1 can be completely avoided.
Be equipped with AD feed inlet 19 and PE feed inlet 20 on the mould body 1, AD feed inlet 19 links to each other with outside AD extruder through heating the hose, and PE feed inlet 20 links to each other with outside PE extruder through heating the hose. The die body 1 is internally provided with a core die A21, an adjusting ring A22, a core die B23, an adjusting ring B24, a mouth die 25, a die body A26 and a die body B27 which are coaxial. The AD feed opening 19 and the adjusting ring a 22 may be provided on a die body a 26, and the PE feed opening 20 and the adjusting ring B24 may be provided on a die body B27. All the components in the die body 1 are connected by tens of bolts in the circumferential direction, and a sealing ring 28 is further arranged between the components, for example, between the die body a 26 and the core die a21, so that the sealing performance is better. Both the die body A26 and the die body B27 are provided with boss structures, so that connecting bolts of other parts can be avoided, and the connecting layout is more reasonable.
An annular AD runner 29 is formed between the core mold A21 and the core mold B23, an annular PE runner 30 is formed between the core mold B23 and the mouth mold 25, a discharging cavity 31 is formed between the core mold A21 and the mouth mold 25, and a discharging hole of the discharging cavity 31 is communicated with the head of the cavity 18. The other end of the AD runner 29 is communicated with the AD feeding port 19, and the other end of the PE runner 30 is communicated with the PE feeding port 20. Still be equipped with branch stream block A32 in AD runner 29, still be equipped with branch stream block B33 in the PE runner 30, divide stream block A32 laminating and inlay on mandrel A21's outer wall, divide stream block B33 laminating and inlay on mandrel B23's outer wall. The shapes of the diversion block a 32 and the diversion block B33 can be determined according to the AD and PE runner ports.
The AD material sequentially enters an AD runner 29 along the heating hose and the AD feeding hole 19, is divided and guided by a dividing block A32, and flows along the bottom layer along the outer wall of the core mold A21; the PE material enters the PE runner 30 along the heating hose and the PE feeding hole 20 in sequence, flows along the PE runner 30 through the diversion and flow guide of the diversion block B33 and flows along the PE runner 30 through gravity, and finally converges with the AD material at the intersection corner of the core mold B23 and flows along the discharging cavity 31, so that no air outlet exists because the PE material converges in the discharging cavity 31, air cannot be filled between layer materials, and the problem of non-bonding is not easy to occur. The material after converging, the inlayer is the AD material, and the skin is the PE material, and the material that comes out from the discharge gate is exactly that two layers of material superpose each other from top to bottom together, and the layering is obvious, can direct cladding on the body surface.
The adjusting ring A22 and the adjusting ring B24 are provided with a plurality of bolts in the radial direction, and the adjusting ring A22 and the adjusting ring B24 are adjusted in the radial direction through screwing in and screwing out of the bolts of the outer ring, so that the change of the flow channel gap between the core mold A21 and the adjusting ring A22 and the change of the flow channel gap between the core mold B23 and the adjusting ring B24 are realized. The flow channel gap is reduced, the internal local pressure is increased, and the flow quantity is reduced; the runner clearance grow, and inside local pressure reduces, and the material flow increases. When the bent pipe 3 is coated, the linear speeds of the inner side and the outer side of the outer pipe wall of the bent pipe 3 are different, the linear speed of the outer side is greater than that of the inner side, and in order to ensure that the thickness of the anti-corrosion coating of the pipe body of the bent pipe 3 is consistent, the outer widths of the AD flow channel 29 and the PE flow channel 30 are greater than the corresponding inner widths of the AD flow channel and the PE flow channel through adjusting bolts. Wherein the outer width is the width of the side close to the outer arc of the elbow 3.
When the widths of the AD flow channel 29 and the PE flow channel 30 are adjusted, the specific steps may be: all the bolts on the outer rings of the adjusting ring A22 and the adjusting ring B24 are loosened in a releasing manner, so that the adjusting ring A22 and the adjusting ring B24 are guaranteed not to be stressed by the bolts in the die body 1. Firstly, according to theoretical requirements, the discharge amount of the outer side of the pipe body needs to be larger than that of the inner side, the 1/4 bolts on the inner side are screwed tightly to prop against the adjusting ring A22 and the adjusting ring B24, the external thrust of the bolts on the inner side is ensured to enable the adjusting ring A22 and the adjusting ring B24 to integrally and horizontally move outwards, then the bolts on the upper side and the lower side of the adjusting ring are adjusted to ensure that the screwing depths of the bolts on the upper side and the lower side are consistent, the adjusting ring is enabled to be consistent with the relative distances between the AD flow channel 29 and the PE flow channel 30 in the vertical direction in the die body 1, and the flow rates are the same. And then the rest adjusting bolts are fastened, and the size of the gap between the adjusting ring A22 and the AD runner 29 and the gap between the adjusting ring B24 and the PE runner 30 are adjusted according to the field experiment effect, so that the thickness of the inner and outer side anticorrosive coatings can be consistent and the standards can be met.
In order to maintain the temperature of the material in the PE runner 30 and the AD runner 29 and make the material inside the mold body 1 in a molten flowing state, a heating ring may be sleeved on the outer wall of the mold body 1, and in order to make the heat preservation effect better, a heating hole 34, a heat sensor hole, and a temperature sensor may be provided in the core mold a21, the heating hole 34 being used for inserting a heating rod, and the temperature sensor being located in the heat sensor hole to facilitate the feedback of the real-time temperature. The thermal sensor hole may be provided with a sealing silica gel ring for sealing to prevent leakage of internal pressure and materials. Heating rings, heating rods and temperature sensors are all commercially available in the existing market.
Referring to the attached drawings 1 and 2 in the specification, the driving device comprises a gantry 4, a controller, a supporting piece for supporting the die body 1, a first driving piece for driving the die body 1 to move up and down, a second driving piece for driving the die body 1 to adjust left and right, and a third driving piece for driving the second driving piece to move up and down, wherein the controller can be a PLC (programmable logic controller) and is used for controlling the first driving piece, the second driving piece and the third driving piece to be opened and closed, so that the die body 1 and the bent pipe 3 are kept concentric.
The support piece comprises an ear seat 35 and a chain block 5, wherein the ear seat 35 can be provided with two ear seats which are respectively welded at the head and the tail of the die body 1 and are positioned at the top of the outer surface of the die body 1. The first driving piece is a lead screw adjusting device 6 fixed on a cross beam of the portal 4, one end of the chain block 5 is fixed with the ear seat 35, and the other end of the chain block is fixed with the lead screw adjusting device 6 and used for suspending the die body 1 on the portal 4. The second driving part comprises a first electric push rod 9 and a second electric push rod 10 which are positioned on the same horizontal plane. The model of the first electric push rod 9 and the second electric push rod 10 can be DL 63-3000-300. The third driving part comprises two electric lead screws 11, and lead screw input shafts of the two electric lead screws 11 are connected through a coupler 12 and driven by the same speed reducing motor 13. The speed reducing motor 13 can be SEW model KA29DRE100M4 with power of 0.37kw and i = 54.89. Two sliding rails 14 are arranged on the side face of one side of the door frame 4, corresponding sliding blocks 15 are arranged on the sliding rails 14, and the rear ends of the first electric push rod 9 and the second electric push rod 10 are connected with a nut 16 of the electric lead screw 11 through the sliding blocks 15 respectively. The front ends of the first electric push rod 9 and the second electric push rod 10 are respectively connected with a connecting block 17, and the shape of the connecting block 17 is matched with the shape of the outer wall of the die body 1. The front ends of the first electric push rod 9 and the second electric push rod 10 are respectively connected with the end parts of the head end and the tail end of the die body 1 through corresponding connecting blocks 17.
The mould body 1 is provided with a level gauge to prevent the centers of the first electric push rod 9, the second electric push rod 10 and the mould body 1 from being on the same horizontal plane, and the mould body is easy to block during movement.
Referring to the description attached with figure 4 and the description attached with figure 5, under the conveying action of the conveying member 2, the bent pipe 3 enters from the tail end of the die body 1 and then passes out from the head of the die body 1. The PLC controller is connected with first driving piece, second driving piece and third driving piece respectively, calculates the concentricity deviation between 1 end to end both ends of mould body respectively and return bend 3. Generally, only adjustment in the horizontal direction is needed, that is, the PLC controller controls the first electric push rod 9 and the second electric push rod 10 to extend or retract according to the concentricity deviation, so that the head and/or the tail of the mold body 1 horizontally move, the head and the tail of the mold body 1 simultaneously shift towards the left or the right, or move left and back to realize left-right swing, so that the mold body 1 and the elbow 3 keep concentricity.
Sometimes, there is great displacement in the vertical direction when return bend 3 moves, only carries out the ascending adjustment of horizontal direction and can not satisfy the requirement of concentricity, and the PLC controller can control first driving piece and third driving piece operation this moment, drives mould body 1 and the whole lift of second driving piece, makes finally mould body 1 and return bend 3 keep the concentricity.
In summary, after reading the present disclosure, those skilled in the art should make various other modifications without creative efforts according to the technical solutions and concepts of the present disclosure, which are within the protection scope of the present disclosure.
Claims (6)
1. The utility model provides a 3LPE coating equipment of hot bending bend cladding formula which characterized in that: comprises a die body (1) and a driving device for driving the die body (1) to adjust the angle; the die body (1) is enclosed to form a cavity (18) in an annular bell mouth shape, and the inner diameter of the cavity (18) at the head part of the die body (1) is smaller than that of the cavity (18) at the tail part of the die body; an annular AD flow channel (29), an annular PE flow channel (30), a discharging cavity (31) for enabling the PE flow channel (30) and the AD flow channel (29) to be converged, an adjusting ring A (22) for adjusting the width of the AD flow channel (29) and an adjusting ring B (24) for adjusting the width of the PE flow channel (30) are arranged in the die body (1); a plurality of bolts are arranged in the radial direction of the adjusting ring A (22) and the adjusting ring B (24), the bolts are used for adjusting the width of the outer sides of the AD flow channel (29) and the PE flow channel (30) to be larger than the corresponding width of the inner sides of the AD flow channel and the PE flow channel, and the width of the outer sides is the width close to one side of the outer arc of the bent pipe (3); the driving device comprises a controller, a supporting piece for supporting the die body (1), a first driving piece for driving the die body (1) to move up and down, a second driving piece for driving the die body (1) to adjust left and right, and a third driving piece for driving the second driving piece to move up and down, wherein the controller is used for controlling the first driving piece, the second driving piece and the third driving piece to open and close so as to keep the concentricity of the die body (1) and the bent pipe (3); the second driving part comprises a first electric push rod (9) and a second electric push rod (10) which are positioned on the same horizontal plane, and the front ends of the first electric push rod (9) and the second electric push rod (10) are respectively connected with the head part and the tail part of the die body (1); the third driving part comprises two electric lead screws (11), lead screw input shafts of the two electric lead screws (11) are connected through a coupler (12) and driven by the same speed reducing motor (13), and the rear ends of the first electric push rod (9) and the second electric push rod (10) are respectively connected with nuts (16) of the two electric lead screws (11); the device is characterized by further comprising a door frame (4), two sliding rails (14) are arranged on the side face of one side of the door frame (4), corresponding sliding blocks (15) are arranged on the sliding rails (14), and the rear ends of the first electric push rod (9) and the second electric push rod (10) are connected with a screw nut (16) of the electric lead screw (11) through the sliding blocks (15) respectively; support piece includes ear seat (35) and chain block (5), the surface top at mould body (1) is fixed in ear seat (35), first driving piece is for fixing lead screw adjusting device (6) on the crossbeam of portal (4), chain block (5) one end is fixed with ear seat (35), and the other end is fixed with lead screw adjusting device (6) for hang mould body (1).
2. The hot-bend cladding type 3LPE coating apparatus according to claim 1, wherein: a core die A (21), a core die B (23) and a mouth die (25) are coaxially arranged in the die body (1); an annular AD flow channel (29) is formed between the core mold A (21) and the core mold B (23), an annular PE flow channel (30) is formed between the core mold B (23) and the mouth mold (25), and a discharging cavity (31) is formed between the core mold A (21) and the mouth mold (25); the discharge hole of the discharge cavity (31) is communicated with the cavity (18) at the head of the die body (1).
3. The hot-bend cladding 3LPE coating apparatus of claim 2, wherein: the split-flow type core die further comprises a split-flow block A (32) and a split-flow block B (33), wherein the split-flow block A (32) and the split-flow block B (33) are respectively attached to and inlaid on the core die A (21) and the core die B (23).
4. The hot-bend cladding 3LPE coating apparatus of claim 3, wherein: a heat sensor hole, a temperature sensor positioned in the heat sensor hole and a heating hole (34) for inserting a heating rod are arranged in the core die A (21); the die body (1) is also provided with a heating ring outside.
5. The hot-bend cladding 3LPE coating apparatus of claim 4, wherein: still be equipped with mould body A (26) and mould body B (27) in mould body (1), mould body A (26) and mould body B (27) all have the lug boss structure.
6. The hot-bend cladding 3LPE coating apparatus of claim 1 or 5, wherein: the mould body (1) is provided with a level gauge.
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| CN202011286028.8A CN112519173B (en) | 2020-11-17 | 2020-11-17 | Hot bending bend cladding formula 3LPE coating equipment |
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| CN202011286028.8A CN112519173B (en) | 2020-11-17 | 2020-11-17 | Hot bending bend cladding formula 3LPE coating equipment |
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