CN110480981A - A kind of molding machine of hole pattern steel skeleton reinforced composite pipe - Google Patents

Abstract

The invention discloses a kind of molding machines of hole pattern steel skeleton reinforced composite pipe, including base and the molding internal model and shaping external mold that are set on base, the shaping external mold concentric locking collar is set to the periphery of molding internal model, the shaping channel for facilitating that hole pattern steel skeleton passes through and plastic liquid passes through is constituted between molding internal model and shaping external mold, the molding internal model is provided with plastic section, it is corresponding, the positioning reshaping device for carrying out positioning shaping to hole pattern steel skeleton is additionally provided with corresponding position at the plastic section on the base.The molding machine can carry out shaping to hole pattern steel skeleton during molding, improve the Forming Quality of multiple tube.

Description

A forming device for perforated steel skeleton reinforced composite pipe

technical field

The invention relates to a molding device, which belongs to the technical field of composite pipe molding and is used in the production of perforated steel skeleton reinforced composite pipes.

Background technique

The perforated steel skeleton reinforced composite pipe is a new type of composite pipe. On the basis of the ordinary plastic pipe, the perforated steel skeleton is added. The perforated steel skeleton is formed into a tubular structure by curling and welding the perforated steel strip, and then reinforced The skeleton then enters the molding device for molding. The molding device mainly includes a molding inner mold and a molding outer mold. The molding outer mold is connected to the extruder, and the perforated steel skeleton enters the molding channel between the molding inner mold and the molding outer mold. , the plastic extruded by the extruder flows into the forming channel between the outer mold and the inner mold to wrap the steel skeleton to form a composite pipe, but the current molding device still has the following deficiencies in the process of use:

1. During the forming process, although the perforated steel skeleton is curled and welded into a tubular structure through the upstream process, it will be deformed during the welding and curling process. The steel skeleton is not completely cylindrical, so it enters the forming device and forms a composite Uneven strength of the tube;

2. The forming inner mold of the extruder needs to be cooled, and the current cooling effect is not good, so the forming inner wall of the composite pipe is not smooth;

3. Although the inner hole of the composite pipe is in contact with the inner mold, in the actual production process, the contact between the inner hole and the inner mold is not very consistent, so the inner diameter of the composite pipe may fluctuate, which is prone to errors.

4. The position of the material ring of the current forming outer mold is difficult to adjust, and there is an annular channel between the material ring and the outer forming mandrel. Once the position of the material ring is not installed accurately, the width of the annular channel will be uneven, which will lead to steel The thickness of the inner and outer plastic layers of the skeleton is uneven, which affects the strength of the composite pipe;

5. It is difficult to adjust the die position of the current forming outer mold, which will also affect the overall size of the composite pipe; at the same time, the replacement of the die and material ring is more complicated. When it is necessary to make composite pipes of different sizes, it is necessary to It is more complicated to disassemble the entire forming outer mold, and then replace the die and material ring.

6. The current forming outer mold needs to go through a certain distance after being sized by the die before entering the cooling box for cooling. When the composite pipe with a higher temperature passes through this gap distance, the plastic fluid of the composite pipe is relatively soft. There may be a collapse phenomenon or the fluid in the upper part of the composite pipe flows downward due to gravity, resulting in a thicker plastic thickness in the lower part of the composite pipe, so that the quality of the composite pipe cannot be controlled.

Contents of the invention

The technical problem to be solved by the present invention is to provide a forming device for a perforated steel skeleton reinforced composite pipe, which can shape the perforated steel skeleton during the forming process and improve the forming quality of the composite pipe.

In order to solve the above-mentioned technical problems, the technical solution of the present invention is: a forming device for perforated steel frame reinforced composite pipe, comprising a machine base and an inner forming mold and an outer forming mold arranged on the machine base, the outer forming mold is concentric It is sleeved on the outer periphery of the forming inner mold, and a forming channel is formed between the forming inner mold and the forming outer mold to facilitate the passage of the perforated steel skeleton and the plastic fluid. The forming inner mold is provided with a shaping section, correspondingly, the A positioning and shaping mechanism for positioning and shaping the perforated steel skeleton is also provided on the machine base at a position corresponding to the shaping section.

As a preferred solution, the positioning and shaping mechanism includes at least one set of first shaping rollers and at least one second shaping rollers, and the first shaping rollers include first upper shaping rollers and first upper shaping rollers arranged up and down. The lower shaping roller, the second shaping roller group includes the first left shaping roller and the first right shaping roller arranged left and right, and the first upper shaping roller and the first lower shaping roller cooperate with each other to adjust the perforated steel skeleton from the upper and lower directions. Shaping, the first left shaping roller and the first right shaping roller cooperate with each other to shape the mesh steel skeleton from left to right.

As a preferred solution, the forming inner mold is provided with the shaping section, the upstream mold section and the downstream mold section in sequence, the shaping section is connected to the upstream end of the upstream mold section, and the outer periphery of the shaping section is provided with a shaping structure , the outer periphery of the upstream die section is provided with an inner molding flow channel to facilitate the flow of materials, the upstream die section and the downstream die section are connected through an upstream connection seat, and the downstream end of the downstream die section is provided with a downstream connection A cooling cylinder is arranged between the downstream connecting seat and the upstream connecting seat, and a cooling channel is formed between the outer circumference of the cooling cylinder and the inner wall of the downstream mold section, and a water inlet pipe and a water return pipe are installed in the forming inner mold. The downstream end of the water inlet pipe is installed on the upstream connection seat or the downstream connection seat. Correspondingly, the downstream end of the return pipe is installed on the downstream connection seat or the upstream connection seat. The upstream connection seat and the downstream connection seat are respectively set There are an upstream communication channel and a downstream communication channel, the upstream communication channel connects the cooling channel with the water inlet pipe or return pipe installed on the upstream connection seat, and the downstream communication channel connects the cooling channel with the return water pipe or inlet pipe installed on the downstream connection seat The water pipe is connected.

As a preferred solution, a negative pressure vacuum tube is also fixed in the forming inner mold, a suction channel is provided on the downstream connecting seat, and several suction holes are provided on the outer periphery of the downstream end of the corresponding downstream mold section. The downstream end of the negative pressure vacuum tube communicates with the suction hole through the suction channel.

As a preferred solution, the outer periphery of the cooling cylinder is provided with spirally arranged spiral blades, and a spiral cooling channel is formed between the spiral blades and the inner wall of the downstream die section.

As a preferred solution, the shaping section includes a first shaping mold section, a second shaping mold section and a third shaping mold section, the first shaping mold section and the second shaping mold section are connected through a first connecting cylinder, The second shaping mold section and the third shaping mold section are connected by a second connecting cylinder, and a shaping ring is arranged on the outside of the first connecting barrel and the second connecting barrel, and several supporting meshes are arranged on the circumference of the shaping ring The guide protrusions on the inner wall of the steel skeleton, the outer periphery of the first shaping die section is also provided with at least one set of positioning keys, each set of positioning keys is evenly distributed on the outer periphery of the first shaping die section, and each positioning key is provided with There is a positioning arc concentric with the forming inner mold, and each set of positioning keys is adapted to the first shaping roller set.

As a preferred solution, the forming outer mold includes a mold base, and the mold base is fixedly connected to one end of the feeding mold barrel, and the feeding mold barrel is provided with an inlet and outlet that communicates with the discharge port of the extruder. Material channel, the other end of the feeding mold barrel is fixed with an outer forming mandrel with a central hole, the feeding mold barrel is detachably installed with a material ring adjusting seat, and the material ring adjusting seat is provided with a material ring installation groove. A material ring is arranged in the ring installation groove, and the material ring is fixed on the material ring adjustment seat through a material ring adjustment mechanism. An inclined annular channel connected with the feeding channel is provided between the material ring and the outer forming mandrel. The end of the material ring adjustment seat is detachably fixed with a die adjustment seat, and the die adjustment seat is provided with an installation through hole, and the outer shaping ring and the mouth are installed in the installation through hole through the shaping adjustment mechanism and the die adjustment mechanism respectively. The inner hole of the outer shaping ring is provided with discrete shaping teeth that are shaped in contact with the outer peripheral surface of the perforated steel skeleton.

As a preferred solution, the material ring adjustment mechanism includes at least four first tightening bolts, and first radial screw holes adapted to the first tightening bolts are evenly distributed on the circumference of the material ring adjustment seat, The first tightening bolts are respectively installed in the first radial screw holes one by one, and the inner end of each first tightening bolt tightens the material ring.

As a preferred solution, the downstream end of the die is connected to a cooling device, and the cooling device includes a cooling box, and a dividing plate is arranged in the cooling box, and the cooling box is divided into cooling boxes by the dividing plate. chamber and overflow chamber, the partition plate is provided with an overflow port, and the upstream side wall, downstream side wall and partition plate of the cooling box are all provided with through holes to facilitate the penetration of the composite pipe. The outer side of the upstream side wall of the box body is fixed with a cold ring, the inner hole of the cold ring is adapted to the outer diameter of the composite pipe, and the inner side of the upstream side wall is provided with an annular spray pipe spraying to the cold ring. The pipe communicates with the water inlet pipe, and the overflow chamber communicates with the drain pipe.

As a preferred solution, an annular groove is provided on the end surface of the cold ring close to the die, and an annular protrusion is provided at the corresponding end of the die, and the annular protrusion is inserted into the annular groove for positioning and fit The protrusion is not in contact with the annular groove, a heat-insulating tetrafluoro ring is arranged between the cold ring and the die, and the cooling box is fixed with the die adjusting seat or the die mounting plate.

After adopting the above-mentioned technical scheme, the effect of the present invention is: since the forming inner mold is provided with a shaping section, correspondingly, the position corresponding to the shaping section on the base is also provided with a hole mesh steel frame. Positioning and shaping mechanism for positioning and shaping. Therefore, the positioning and shaping mechanism can first shape the mesh steel skeleton to make it more regular, and at the same time position and shape the shaping section of the inner mold to fix the inner mold, so that the strength obtained after compounding is uniform. Sex is higher.

And because the positioning and shaping mechanism includes at least one set of first shaping rollers and at least one second shaping rollers, and the first shaping rollers include first upper shaping rollers and first lower shaping rollers arranged up and down, so The second shaping roller group includes the first left shaping roller and the first right shaping roller arranged left and right, the first upper shaping roller and the first lower shaping roller cooperate with each other to shape the perforated steel skeleton from the upper and lower directions, and the first A left shaping roller and a first right shaping roller cooperate with each other to shape the perforated steel skeleton from the left and right directions. The positioning and shaping mechanism has a reasonable structure, the first shaping roller set is shaped from top to bottom, and the second shaping roller set is shaped from left to right, so that the shaping effect is better.

And because described shaping inner mold is provided with described shaping section, upstream mold section and downstream mold section successively, described shaping section is connected with the upstream end of upstream mold section, and the outer periphery of this shaping section is provided with shaping structure, and described upstream mold section The outer periphery of the section is provided with an inner forming flow channel for the convenience of materials entering circulation, the upstream mold section and the downstream mold section are connected through an upstream connecting seat, the downstream end of the downstream mold section is provided with a downstream connecting seat, and the downstream connecting seat A cooling cylinder is arranged between the upper connection seat and the outer periphery of the cooling cylinder and the inner wall of the downstream die section, and a cooling passage is formed between the inner mold of the forming inner mold. The end is installed on the upstream connection seat or the downstream connection seat. Correspondingly, the downstream end of the return pipe is installed on the downstream connection seat or the upstream connection seat. The upstream connection seat and the downstream connection seat are respectively provided with an upstream communication channel and a The downstream communication channel, the upstream communication channel communicates the cooling channel with the water inlet pipe or the water return pipe installed on the upstream connection seat, and the downstream communication channel communicates the cooling channel with the water return pipe or water inlet pipe installed on the downstream connection seat. The cooling effect of the inner mold is better, so that the inner wall of the composite pipe is smoother when it is formed.

And because negative pressure vacuum tube is also fixed in the described forming inner mold, suction channel is arranged on this downstream connecting seat, and several suction holes are arranged on the outer periphery of the downstream end of corresponding described downstream mold section, the downstream of this negative pressure vacuum tube The end is connected with the suction hole through the suction channel, and the negative pressure vacuum tube can be used to generate negative pressure at the suction hole, so that the composite pipe can fit better on the downstream die section, so that the diameter of the inner hole is more accurate.

And because the outer circumference of the cooling cylinder is provided with helical blades, a helical cooling passage is formed between the helical blades and the inner wall of the downstream die section, so that the cooling passage can make the cooling water flow spirally, and the cooling effect is better. it is good.

And because the shaping section includes the first shaping mold section, the second shaping mold section and the third shaping mold section, the first shaping mold section and the second shaping mold section are connected by the first connecting cylinder, and the second shaping mold section It is connected with the third shaping mold section through the second connecting cylinder, and the outside of the first connecting cylinder and the second connecting cylinder is provided with a shaping ring, and the upper circumference of the shaping ring is provided with several guides supporting the inner wall of the perforated steel skeleton. The outer circumference of the first shaping die section is also provided with at least one set of positioning keys, each set of positioning keys is evenly distributed on the outer circumference of the first shaping die segment, and each positioning key is provided with a Concentric positioning arc surface, each set of positioning keys is adapted to the first shaping roller set. The shaping section is divided into three sections, which can better arrange the shaping ring, and the guide protrusion can well support the inner wall of the mesh steel skeleton and reduce deformation. The positioning arc surface concentric with the forming inner mold on the positioning key can be used. The center of the forming inner mold is better determined, so that it can be better matched and concentric with the outer mold, and the positioning effect is better.

And because the forming outer mold includes a mold base, the mold base is fixedly connected with one end of the feeding mold barrel, and the feeding mold barrel is provided with a feed channel that cooperates with the discharge port of the extruder. The other end of the material mold cylinder is fixed with an outer forming mandrel with a central hole, and a material ring adjustment seat is detachably installed on the feed mold cylinder, and a material ring installation groove is arranged on the material ring adjustment seat, and a There is a material ring, and the material ring adjustment seat is fixed by a material ring adjustment mechanism. An inclined annular channel communicating with the feed channel is arranged between the material ring and the outer forming mandrel. The material ring adjustment seat The end part is detachably fixed with a die adjustment seat, and the die adjustment seat is provided with an installation through hole, and the outer shaping ring and the die are installed in the installation through hole through the shaping adjustment mechanism and the die adjustment mechanism respectively. The inner hole of the shaping ring is provided with discrete shaping teeth which are shaped in contact with the outer peripheral surface of the perforated steel skeleton. The positions of the material ring, the outer shaping ring and the die can be adjusted through the material ring adjustment mechanism, the shaping adjustment mechanism and the die adjustment mechanism, and finally the inner molds of the remaining composite pipes are concentric to ensure that the plastic layer of the composite pipe is more uniform and the composite pipe The sizing is also more accurate, and at the same time, the inner hole of the outer shaping ring is provided with discrete shaping teeth that are in contact with the outer peripheral surface of the perforated steel skeleton. Therefore, the perforated steel skeleton contacts the shaping teeth during operation, so that once the hole When the mesh steel skeleton is irregularly deformed, it will be shaped by the shaping teeth, and finally the regular mesh steel skeleton makes the strength of the composite pipe more uniform.

And because the downstream end of the die is connected with the cooling device, the cooling device includes a cooling box, and the cooling box is provided with a partition plate, which divides the cooling box into a cooling chamber and an overflow chamber. , the partition plate is provided with an overflow port, the upstream side wall, the downstream side wall and the partition plate of the cooling box are all provided with through holes for the composite pipe to pass through, and the upstream side of the cooling box The outer side of the wall is fixed with a cold ring, the inner hole of the cold ring is adapted to the outer diameter of the composite pipe, and the inner side of the upstream side wall is provided with an annular spray pipe to spray the cold ring, and the spray pipe communicates with the water inlet pipe , the overflow chamber communicates with the drain pipe. , In this way, the composite pipe after sizing through the die enters the cooling box through the cold ring, and the cold ring is sprayed by the spray pipe to maintain a lower temperature, and the cold ring contacts the surface of the composite pipe, so that the surface of the composite pipe first Cooling, so that the surface is smoother, and the composite pipe cooled by the cold ring enters the cooling chamber at the first time, and the cooling water sprayed by the spray pipe enters the cooling chamber and gradually fills up, and the cooling water flows from the overflow port into the cooling chamber. The cooling device has a better cooling effect and can better ensure the quality of the composite pipe.

And because the end face of the cold ring close to the die is provided with an annular groove, the corresponding end of the die is provided with an annular protrusion, and the annular protrusion is inserted into the annular groove for positioning and fit, and the annular protrusion and the annular recess The groove is not in contact, and a heat-insulating tetrafluoro ring is arranged between the cold ring and the die. Heat, reducing heat transfer to the cold ring.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the three-dimensional structure diagram of the embodiment of the present invention;

Fig. 2 is the front schematic diagram of the embodiment of the present invention;

Fig. 3 is the sectional view of molding outer mold and cooling device;

Fig. 4 is the structural representation of outer shaping ring;

Fig. 5 is the perspective view of molding internal mold;

Fig. 6 is a structural schematic diagram of positioning keys on the first shaping die section of the forming inner mould;

Fig. 7 is the cross-sectional view of the first shaping mold section and the second shaping mold section of the forming inner mould;

Fig. 8 is the cross-sectional view of the upstream mold section and the downstream mold section of forming internal mould;

In the attached drawings: 1. Machine base; 2. Forming inner mold; 21. First shaping mold section; 22. Second shaping mold section; 23. Third shaping mold section; 24. Upstream mold section; 241. Internal molding flow Road; 25. Downstream mold section; 26. First connecting cylinder; 27. Upstream connecting seat; 28. Downstream connecting seat; 29. Cooling cylinder; 210. Inlet pipe; 211. Positioning key; 212. Shaping ring; 2121. Guide protrusion; 213. cooling channel; 214. return pipe; 215. downstream communication channel; 216. upstream vacuum tube; 217. suction channel; 218. suction hole; 219. downstream vacuum tube; 220. second connecting cylinder; 221 .Upstream communication channel; 3. Forming outer mold; 31. Die base; 32. Feeding mold barrel; 33. Material ring adjustment seat; 34. External forming mandrel; .Ring channel; 38. Die mounting plate; 39. Outer shaping ring; 391. Shaping teeth; 310. Die; 311. Die adjustment seat; 312. Die adjustment mechanism 312; .Baffle; 315. Backing plate; 316. Insulation PTFE ring; 4. Cooling device; 41. Cooling chamber; 42. Partition plate; 43. Overflow chamber; 44. Overflow port; 45. Spray pipe ; 46. cold ring; 5. positioning shaping mechanism; 51. the first shaping roller group; 511. the first roller frame; 512. the first upper shaping roller; 513. the first lower shaping roller; .Up and down adjustment mechanism; 52. Second shaping roller group; 521. First left shaping roller; 522. First right shaping roller; 523. Left and right adjusting mechanism.

Detailed ways

The present invention will be described in further detail below through specific examples.

As shown in Figures 1 to 8, a forming device for a perforated steel skeleton reinforced composite pipe includes a machine base 1 and a forming inner mold 2 and a forming outer mold 3 arranged on the machine base 1, and the forming outer mold 3 Concentrically set on the outer periphery of the forming inner mold 2, forming a forming channel between the forming inner mold 2 and the forming outer mold 3, which is convenient for the perforated steel skeleton to pass through and the plastic fluid to pass through, and the forming inner mold 2 is provided with a shaping section Correspondingly, a positioning and shaping mechanism 5 for positioning and shaping the mesh steel skeleton is also provided at the position corresponding to the shaping section on the machine base 1 .

As shown in Figures 1 and 2, the positioning and shaping mechanism 5 includes at least one set of first shaping rollers 51 and at least one second shaping rollers 52. In this embodiment, the first shaping rollers 51 and the second shaping rollers There are two sets of shaping rollers 52 and the intervals are staggered.

The first shaping roller group 51 includes a first upper shaping roller 512 and a first lower shaping roller 513 arranged up and down, and the first upper shaping roller 512 and the first lower shaping roller 513 cooperate with each other to face the mesh steel from the upper and lower directions. Skeleton shaping, wherein the position of the first lower shaping roller 513 is not adjustable, and its lower roller seat is fixed on the first roller frame 511. Of course, in order to ensure that the first lower shaping roller 513 is concentric with the forming inner mold, the first roller frame 511 is provided with pads to determine the installation position of the first lower shaping roller 513. The position of the first upper shaping roller 512 is adjustable up and down. The adjustment mechanism 515 is adjusted by a lead screw adjustment mechanism.

The second shaping roller group 52 includes a first left shaping roller 521 and a first right shaping roller 522 arranged left and right. Steel frame shaping. Wherein, the position of the first left shaping roller 521 and the left and right positions of the first right shaping roller 522 are adjustable, and its left and right roller seats are slidingly installed on the second roller frame left and right, and the left and right adjustments are realized by the left and right adjustment mechanism 523. At this time, the left and right adjustment mechanism 523 can adopt the adjustment mechanism of double-headed screw to realize synchronous adjustment, and certainly also can adopt oil cylinder or air cylinder to realize automatic adjustment.

In this embodiment, however, the first shaping roller set 51 and the second shaping roller set 52 are respectively two sets and arranged with a staggered interval. It is also possible to combine the first shaping roller group 51 and the second shaping roller group on the same set of roller frames, and also realize shaping in the up-down and left-right directions.

As shown in Figures 5 to 8, the forming inner mold 2 is sequentially provided with the shaping section, the upstream mold section 24 and the downstream mold section 25, and the shaping section is connected to the upstream end of the upstream mold section 24, and the shaping section The outer periphery is provided with a shaping structure, and the shaping section includes a first shaping mold section 21, a second shaping mold section 22 and a third shaping mold section 23, and the first shaping mold section 21 and the second shaping mold section 22 pass through the first shaping mold section A connecting cylinder 26 is connected, and the second shaping mold section 22 and the third shaping mold section 23 are connected through the second connecting cylinder 220, and the outside of the first connecting cylinder 26 and the second connecting cylinder 220 is provided with a shaping ring 212, The upper circumference of the shaping ring 212 is provided with several guide protrusions 2121 supporting the inner wall of the perforated steel framework. When the perforated steel framework passes through the guide protrusions 2121, it will be supported by the guide protrusions 2121 to avoid deformation. The outer periphery of a shaping mold segment 21 is also provided with at least one group of positioning keys 211, and the all circumference of each group of positioning keys 211 is evenly distributed on the outer circumference of the first shaping die segment 21, and each positioning key 211 is provided with a ring concentric with the forming inner mold. Each set of positioning keys 211 is adapted to the first shaping roller set 51. The quantity of this positioning key 211 is the same as the quantity of the first shaping roller group 51, so the positioning key 211 can be used as a positioning reference to conveniently locate the center of the forming inner mold 2, and can also be used as the location of the first shaping roller group 51 simultaneously, so that The installation accuracy of the first shaping roller group 51 is higher.

The outer periphery of the upstream die section 24 is provided with an inner molding flow channel 241 which is convenient for materials to enter and circulate. The fluid enters the inside of the perforated steel skeleton.

The upstream die section 24 and the downstream die section 25 are connected by an upstream connecting seat 27, and the downstream end of the downstream die section 25 is provided with a downstream connecting seat 28, and between the downstream connecting seat 28 and the upstream connecting seat 27, a Cooling cylinder 29, a cooling channel 213 is formed between the outer periphery of the cooling cylinder 29 and the inner wall of the downstream die section 25, and the outer periphery of the cooling cylinder 29 is provided with helical blades arranged in a spiral manner, and the spiral blades and the downstream mold section A spiral cooling passage 213 is formed between the inner walls of 25, so that the cooling water flows in a spiral and the cooling effect is better.

A water inlet pipe 210 and a water return pipe 214 are installed in the forming inner mold 2, and the downstream end of the water inlet pipe 210 is installed on the upstream connection seat 27 or the downstream connection seat 28. Correspondingly, the downstream end of the water return pipe 214 is installed on the On the downstream connecting seat 28 or the upstream connecting seat 27, the upstream connecting seat 27 and the downstream connecting seat 28 are respectively provided with an upstream communicating channel 221 and a downstream communicating channel 215, and the upstream communicating channel 221 connects the cooling channel 213 with the upstream The water inlet pipe 210 or the water return pipe 214 on the connecting seat 27 communicates, and the downstream communication channel 215 communicates the cooling channel 213 with the water return pipe 214 or the water inlet pipe 210 installed on the downstream connecting seat 28 . Wherein, the water inlet pipe 210 and the water return pipe 214 can be installed in the above two ways, and both ways can be realized.

As shown in Figure 8, a negative pressure vacuum tube is also fixed in the forming inner mold 2, a suction channel 217 is arranged on the downstream connecting seat 28, and several suction channels are arranged on the outer periphery of the downstream end of the corresponding downstream mold segment 25. Hole 218 , the downstream end of the negative pressure vacuum tube communicates with the suction hole 218 through the suction channel 217 . In this embodiment, the negative pressure vacuum tube includes an upstream vacuum tube 216 and a downstream vacuum tube 219 , and the downstream vacuum tube 219 is installed between the upstream connection seat 27 and the downstream connection seat 28 .

As shown in Figures 3 to 4, the forming outer mold 3 includes a mold frame 31, and the mold frame 31 is fixedly connected to one end of the feeding mold barrel 32, and the feeding mold barrel 32 is provided with a The outlet is matched with a connected feeding channel, and the other end of the feeding mold barrel 32 is fixed with an outer forming mandrel 34 with a central hole, and a material ring adjusting seat 33 is detachably installed on the feeding mold barrel 32, and the material ring The adjusting seat 33 is provided with a material ring 35 installation groove, and the material ring 35 is provided with a material ring 35 in the installation groove, and the material ring 35 is fixed by a material ring adjustment mechanism 36 on the material ring adjustment seat 33, and the material ring 35 and the outer molding An inclined annular passage 37 communicating with the feed passage is provided between the mandrels 34, and the end of the material ring adjustment seat 33 is detachably fixed with a die adjustment seat 311, and the die adjustment seat 311 is provided with a mounting channel. In the installation through hole, the outer shaping ring 39 and the die 310 are respectively installed through the shaping adjustment mechanism 313 and the die adjustment mechanism 312. Discrete shaping teeth 391 for shaping.

Wherein, the material ring adjustment mechanism 36 includes at least four first tightening bolts, and the upper circumference of the material ring adjustment seat 33 is evenly distributed with first radial screw holes adapted to the first tightening bolts. A tightening bolt is installed in the first radial screw hole correspondingly one by one, and the inner end of each first tightening bolt tightens the material ring 35 .

However, the number of the first tightening bolts in this embodiment is preferably four, so that the material ring 35 can be adjusted from four directions, up, down, left, and right, and the adjustment is convenient.

In this embodiment, the die adjusting seat 311 is installed on the die mounting plate, a backing plate 315 is provided between the die mounting plate and the material ring adjusting seat 33, and a partition 314 is provided between the die mounting plate and the material ring .

In the same way, the structure of the shaping adjustment mechanism 313 and the die adjustment mechanism 312 is the same as that of the material ring adjustment mechanism 36, including the second tightening bolt and the third tightening bolt respectively. Tighten the outer shaping ring 39 and the die 310 respectively, and adjust the positions of the outer shaping ring 39 and the die 310 by loosening or pushing the corresponding tightening bolts.

The downstream end of this die 310 is connected with cooling device 4, and described cooling device 4 comprises a cooling box body, and this cooling box body is provided with dividing plate 42, and this dividing plate 42 divides cooling box body into cooling chamber 41 and an overflow chamber 43, the dividing plate 42 is provided with an overflow port 44, and the upstream side wall, the downstream side wall and the dividing plate 42 of the cooling box are all provided with through holes to facilitate the penetration of the composite pipe, The formed composite pipe passes through the cooling chamber 41 and the overflow chamber 43 in sequence and passes through the through hole, the composite pipe is cooled immediately, and the molding quality of the composite pipe is better. The outer side of the upstream side wall of the cooling box is fixed with a cold ring 46, the inner hole of the cold ring 46 is adapted to the outer diameter of the composite pipe, and the inner side of the upstream side wall is provided with an annular spray ring 46 spraying. The shower pipe 45 communicates with the water inlet pipe 210, and the overflow chamber 43 communicates with the drain pipe. The end face of the cold ring 46 close to the die 310 is provided with an annular groove, and the end of the corresponding die 310 is provided with an annular protrusion, which is inserted into the annular groove for positioning and fit and the annular protrusion and the ring The grooves are not in contact, and a heat-insulating tetrafluoro ring 316 is arranged between the cold ring 46 and the die 310 , and the cooling box is fixed between the die adjustment seat 311 or the die 310 mounting plate 38 .

The above-described embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. On the basis of not departing from the design spirit of the present invention, any deformation and transformation made to the technical solution of the present invention shall fall within the scope of the present invention. Into the scope of protection determined by the claims of the present invention.

Claims (10)

1. A forming device for reinforced composite pipe with perforated steel skeleton, comprising a machine base and a forming inner mold and a forming outer mold arranged on the support, the forming outer mold is concentrically sleeved on the outer periphery of the forming inner mold, and the forming inner mold A molding channel is formed between the mold and the forming outer mold to facilitate the passage of the mesh steel skeleton and the plastic fluid. It is characterized in that: the forming inner mold is provided with a shaping section, and correspondingly, the shaping A positioning and shaping mechanism for positioning and shaping the perforated steel skeleton is also provided at the corresponding position of the segment. 2. A forming device for perforated steel frame reinforced composite pipe according to claim 1, characterized in that: said positioning and shaping mechanism includes at least one set of first shaping rollers and at least one second shaping roller set, The first shaping roller group includes a first upper shaping roller and a first lower shaping roller arranged up and down, and the second shaping roller group includes a first left shaping roller and a first right shaping roller arranged left and right. The upper shaping roller and the first lower shaping roller cooperate with each other to shape the perforated steel skeleton from the upper and lower directions, and the first left shaping roller and the first right shaping roller cooperate with each other to shape the perforated steel skeleton from the left and right directions. 3. The forming device of a perforated steel frame reinforced composite pipe as claimed in claim 2, wherein the forming inner mold is sequentially provided with the shaping section, the upstream mold section and the downstream mold section, and the shaping The section is connected to the upstream end of the upstream die section, and the outer periphery of the shaping section is provided with a shaping structure. Connected by an upstream connecting seat, the downstream end of the downstream die section is provided with a downstream connecting seat, a cooling cylinder is arranged between the downstream connecting seat and the upstream connecting seat, and the outer circumference of the cooling cylinder and the inner wall of the downstream die section A cooling channel is formed, and a water inlet pipe and a water return pipe are installed in the forming inner mold, and the downstream end of the water inlet pipe is installed on the upstream connecting seat or the downstream connecting seat, and correspondingly, the downstream end of the returning water pipe is installed On the seat or the upstream connection seat, the upstream connection seat and the downstream connection seat are respectively provided with an upstream communication channel and a downstream communication channel, and the upstream communication channel connects the cooling channel with the water inlet pipe or return pipe installed on the upstream connection seat, so The downstream communication channel connects the cooling channel with the return pipe or the water inlet pipe installed on the downstream connecting seat. 4. The forming device of a perforated steel frame reinforced composite pipe as claimed in claim 3, wherein a negative pressure vacuum tube is also fixed in the forming inner mold, and a suction channel is arranged on the downstream connecting seat, corresponding to Several suction holes are arranged on the outer periphery of the downstream end of the downstream die section, and the downstream end of the negative pressure vacuum tube communicates with the suction holes through a suction channel. 5. The forming device of a perforated steel skeleton reinforced composite pipe as claimed in claim 4, wherein a helical blade is provided on the outer periphery of the cooling cylinder, and the helical blade and the inner wall of the downstream mold section A spiral cooling channel is formed between them. 6. A forming device for perforated steel skeleton reinforced composite pipe as claimed in claim 5, characterized in that: said shaping section comprises a first shaping mold section, a second shaping mold section and a third shaping mold section, the first A shaping die section and a second shaping die section are connected through a first connecting cylinder, and the second shaping die section and a third shaping die section are connected through a second connecting cylinder, and the first connecting cylinder and the second connecting cylinder A shaping ring is arranged on the outside of the shaping ring, and several guide protrusions supporting the inner wall of the perforated steel skeleton are arranged on the upper circumference of the shaping ring. The circumference is evenly distributed on the outer periphery of the first shaping die section, and each positioning key is provided with a positioning arc concentric with the forming inner mold, and each set of positioning keys is adapted to the first shaping roller group. 7. The forming device of a perforated steel skeleton reinforced composite pipe as claimed in any one of claims 1 to 6, wherein the forming outer mold includes a mold base, and the mold base and the feeding mold barrel One end is fixedly connected, and the feeding mold barrel is provided with a feeding channel that communicates with the discharge port of the extruder, and the other end of the feeding mold barrel is fixed with an outer forming core mold with a central hole. A material ring adjustment seat is detachably installed on the barrel, and a material ring installation groove is arranged on the material ring adjustment seat, and a material ring is arranged in the material ring installation groove, and the material ring is fixed on the material ring adjustment seat through a material ring adjustment mechanism. There is an inclined annular channel connected with the feed channel between the material ring and the outer forming mandrel. The end of the material ring adjustment seat is detachably fixed with a die adjustment seat, and the die adjustment seat is provided with a mounting channel. The outer shaping ring and the die are respectively installed in the installation through hole through the shaping adjustment mechanism and the die adjustment mechanism. tooth. 8. A forming device for perforated steel skeleton reinforced composite pipes as claimed in claim 7, characterized in that: the material ring adjustment mechanism includes at least four first tightening bolts, and the upper circumference of the material ring adjustment seat There are evenly distributed first radial screw holes adapted to the first tightening bolts, and the first tightening bolts are installed in the first radial screw holes one by one, and the inner end of each first tightening bolt Tighten the material ring. 9. The forming device of a perforated steel skeleton reinforced composite pipe as claimed in claim 8, wherein the downstream end of the die is connected with a cooling device, and the cooling device includes a cooling box, and the cooling device A partition plate is arranged in the box body, and the partition plate divides the cooling box body into a cooling chamber and an overflow chamber. An overflow port is arranged on the partition plate, and the upstream side wall and the downstream side wall of the cooling box body Both the partition plate and the partition plate are provided with through holes to facilitate the penetration of the composite pipe. A cold ring is fixed on the outside of the upstream side wall of the cooling box. The inner hole of the cold ring is adapted to the outer diameter of the composite pipe, and the upstream side wall An annular spray pipe for spraying to the cold ring is arranged on the inner side of the body, the spray pipe communicates with the water inlet pipe, and the overflow chamber communicates with the drain pipe. 10. A forming device for perforated steel skeleton reinforced composite pipe as claimed in claim 9, characterized in that: the end face of the cold ring close to the die is provided with an annular groove, and the end of the corresponding die is provided with An annular protrusion, the annular protrusion is inserted into the annular groove for positioning fit and the annular protrusion and the annular groove are not in contact, a heat-insulating tetrafluoro ring is arranged between the cold ring and the die, and the cooling box and The die adjusting seat or the die mounting plate are fixed.