KR20190040461A - Double layer pipe manufacturing device for block insert type - Google Patents

Abstract

The present invention relates to a block inserting type synthetic resin double wall pipe manufacturing apparatus which can suppress the generation of distortion, grooves and the like in processes of cooling and winding a profile, and enables a high strength double wall pipe to be manufactured accordingly. The block inserting type synthetic resin double wall pipe manufacturing apparatus of the present invention includes: a reinforcement block forming means including a block base material extruder for extruding a block base material, a block base material die, a block base material sizing unit, a block base material cooling unit, a block base material extracting device, and a block base material cutter for cutting a block base material transferred from the block base material extracting device and enabling reinforcement blocks to be manufactured; and a profile forming means including a profile extruder for extruding the profile having the reinforcement blocks inserted into a hollow part thereof, a profile die, a profile sizing unit, a profile cooling unit, and a profile extracting device, wherein the hollow part of the reinforcement block is inserted into the profile die through a reinforcement block induction pipe in the direction in which a hollow part of the reinforcement block intersects with the hollow part of the profile.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a double-

The present invention relates to a block insertion type synthetic resin double wall pipe manufacturing apparatus.

In recent years, there has been a need to develop a double-walled tube made of PP (polypropylene) based material such as polyethylene (PE), which is soft and strong.

However, in the case of a double-walled pipe having a large diameter, there is a problem that the profile surface is distorted during the cooling process when the double-walled tube profile is manufactured, and grooves are formed inside the profile in the profile winding process.

In order to solve such a problem, the present applicant has disclosed a multi-walled pipe manufactured by using a profile in which reinforcing blocks are inserted along hollow portions in Korean Patent No. 10-1398324.

However, Korean Patent No. 10-1398324 does not disclose or suggest an apparatus for manufacturing a profile in which a reinforcing block is inserted, and the inventors of the present application have developed a device capable of manufacturing a profile in which a reinforcing block is inserted And as a result, the present invention has been filed.

The present invention provides a double-walled pipe manufacturing apparatus for a block insert type synthetic resin double wall pipe capable of suppressing occurrence of dents and grooves in a cooling process of a profile and a winding process, thereby manufacturing a high strength double wall pipe.

The technical objects to be achieved by the present invention are not limited to the above-mentioned technical problems.

In order to accomplish the above object, the present invention provides a double-walled pipe manufacturing apparatus for a block-inserted synthetic resin double wall pipe, comprising: a block base material extruder for extruding a block base material; a block base material die; a block base material sizing unit; A reinforcing block forming means having a block base material cutter for cutting the block base material transferred from the block base material to produce reinforcing blocks; And a profile forming means having a profile extruder for extruding a profile into which the reinforcing blocks are inserted in the hollow portion, a profile die, a profile sizing portion, a profile cooling portion, and a profile inserting portion, So that the hollow portion of the reinforcing block can be inserted in a direction intersecting the hollow portion of the profile.

The present invention further provides a double-walled pipe manufacturing apparatus for a block-inserted synthetic resin double wall, comprising: a reinforcing block supplying means for supplying a hollow portion of a reinforcing block to a profile die side so as to intersect a hollow portion of a profile to be formed; A reinforcing block feed rail for receiving the reinforcing blocks discharged through the cutter and guiding the reinforcing blocks to the reinforcing block guide pipe; And an actuator for diverting the reinforcing blocks guided along the reinforcing block supply rail toward the reinforcing block guide pipe, wherein the reinforcing block supply rail can be connected at right angles to the reinforcing block guide tube when viewed in plan view.

Specifically, the block base material cutter includes: a moving table disposed on the upper surface of the bed so as to be linearly reciprocable along the conveying direction of the block base material; A cutter mounted on the moving table and guided along the moving table to cut the block base material in the width direction to produce the reinforcing block; And a moving cylinder for moving the moving table on which the cutter is mounted when cutting the block base material in the same speed and direction as the moving speed and moving direction of the block base material and returning the moving table on which the cutter is mounted upon completion of cutting the block base material have.

Specifically, an EL guide extended along the conveying direction of the block base material is mounted on the upper surface of the bed. An ELM bearing slidably fitted on the EL guide is mounted on the lower surface of the moving table. On the upper surface of the moving table, A first guard and a second guard for guiding the block base material conveyed from the base material take-up machine are formed. The first guard is formed so as to extend from the rear end of the moving table facing the bar stool which is the block base material to the front end side of the moving table, The two guards are formed so as to extend from an extended position of the first guard to a front end of the moving table, and a cutter is provided between the extended end of the first guard and the starting end of the second guard to cut the block base material A space portion may be provided.

Specifically, the cutter cuts the block base material into and out of the cutting space portion by the operation of the cutting cylinder, and the cutting cylinder is arranged so as to be spaced apart from the upper side of the moving table so that the cutting cylinder rod can be extended after returning to the cutting space side A cutter mounting head fixed to the upper surface of the support table and having an end connected to the cutter at the front end side thereof is supported by guide bars extending vertically on the upper surface of the movement table, On both sides of the rear end of the head, a lift block slidably fitted to the adjacent guide bar can be mounted.

Specifically, the front end and the rear end of the cutter are provided with a first pressurizing cylinder and a second pressurizing cylinder for preventing flow of the block base material at the time of cutting the block base material. The first pressurizing cylinder extends the first pressurizing cylinder rod, The second pressurizing cylinder presses the block preform guided inward of the second guard by stretching the second pressurizing cylinder rod, and presses the block preform guided inward to the inside of the first pressurizing cylinder rod The first and second pressure plates can be mounted.

Specifically, the moving table facing the cut space portion may be formed with a through hole so as to prevent a collision between the cutter mounting head and the moving table.

Specifically, the moving cylinder is disposed on one side of the upper surface of the bed, and the moving cylinder rod of the moving cylinder can be connected to the connecting bracket extending to the upper surface side of the bed on the lower surface of the moving table.

Specifically, the first guard is provided with a wheel-type rotary encoder for detecting a conveying speed, a conveying direction and a length of a block base material entering inward, and detects the position of the cutter on the upper surface of the moving table adjacent to the cut- A first position sensor and a second position sensor may be arranged to control the operation of the cylinder.

Specifically, the interior of the profile die includes a first region into which melt is injected from the profile extruder; A second region where the profile begins to be formed and the reinforcing blocks are loaded through the reinforcing block inlet pipe; A third region in which the reinforcing blocks are squeezed in the hollow portion of the profile that has begun to be formed in the second region; And a fourth region in which the reinforcing blocks are extruded in a state in which the reinforcing blocks are completely attached to the wall surface of the hollow portion of the profile. The third region may be formed such that the width thereof gradually decreases from the rear end side to the front end side.

Specifically, the reinforcing block guide tube extends from the rear end of the profile die through the first area to the second area, and the reinforcing block guide is exposed on the outside of the profile die, A first loading belt disposed on the upper side of the reinforcing block inlet pipe and supported and rotated by first and second upper pulleys spaced apart in the longitudinal direction of the reinforcing block inlet pipe; A second charging belt disposed on a lower side of the reinforcing block inlet pipe and supported and rotated by first and second lower pulleys spaced apart in the longitudinal direction of the reinforcing block inlet pipe; And a drive motor for transmitting driving force to the first and second charging belts, wherein the first and second charging belts oppose the first and second charging belts are provided with guide belts Respectively, so that the reinforcing blocks can be forcibly charged into the profile die side.

Specifically, at the extended end of the reinforcing block feed rail and the reinforcing block feed rail, a separation preventing tuck is formed to prevent the reinforcing block guided along the reinforcing block feed rail from coming off, while facing the hollow portion of the reinforcing block guiding tube .

Specifically, the actuator is a pneumatic cylinder or a hydraulic cylinder for extending and returning the rod, and the actuator is mounted on the lateral side of the reinforcing block supply rail facing the hollow portion of the reinforcing block guide tube, and the actuator extends the rod, The reinforcing block guided to the connecting portion of the rail and the reinforcing block guide pipe can be supplied to the reinforcing block guide pipe side.

Further, the actuator is a servo motor for rotating the rotary shaft, and the actuator is mounted outside the lower surface of the reinforcing block supply rail so that the extended end of the rotary shaft is disposed below the connection portion of the reinforcing block supply rail and the reinforcing block induction pipe, On the other hand, a reinforcing block guided to the connecting portion of the reinforcing block feed rail and the reinforcing block guide pipe can be supplied to the reinforcing block guide pipe while rotating along the rotation axis.

As described above, according to the present invention, since the reinforcing blocks cooled by the hollow portion of the profile are inserted during the profile forming, the difference in cooling speed between the inside and outside of the formed profile can be reduced, There is an advantage that the distortion and the groove which are generated in the profile can be suppressed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a block-inserted synthetic resin double wall pipe manufacturing apparatus according to the present invention,
FIG. 2 is a view showing the reinforcing blocks manufactured by the reinforcing block forming means of FIG. 1,
Fig. 3 is a view showing the block base material cutter shown in Fig. 1,
Fig. 4A is a view showing the state of the cutter and the first and second pressing cylinders at the cutting start position, Fig. 4B is a sectional view FIG. 4C is a view showing the state of the cutter and the first and second pressing cylinders before returning to the cutting start position after completion of cutting of the block base material, and FIG. 4C is a view showing the state of the cutter and the first and second pressing cylinders,
Figure 5 is a cross-sectional view of the profile die shown in Figure 1,
FIG. 6 is a view showing a state in which a reinforcing block supplying means is disposed between the reinforcing block forming means and the profile forming means shown in FIG. 1,
FIG. 7A is a view showing an embodiment of the reinforcing block supplying means shown in FIG. 6, and FIG.
FIG. 7B is a view showing another embodiment of the reinforcing block supplying means shown in FIG. 6. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference symbols whenever possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

1 is a schematic view of an apparatus for manufacturing a double-walled pipe for insertion of a synthetic resin according to the present invention. The apparatus 100 for manufacturing a double-walled pipe for insertion of a synthetic resin double wall according to the present invention cuts the block- B), and profile forming means (300) for producing a profile (P) into which the reinforcing blocks (B) are inserted into the hollow portion.

On the other hand, the profile P manufactured through the block insertion type synthetic resin double wall pipe manufacturing apparatus 100 according to the present invention is spirally formed on the outer circumferential surface of a winding drum (not shown) disposed on the front end side of the profile forming means 300 And wound into a double walled pipe (not shown).

First, the reinforcing block forming means 200 includes a block base material extruder 202, a block base material die 206, a block base material sizing portion 208, a block base material cooling portion 210, a block material drier 212, And a cutter 220.

The block base material extruder 202 melts a pellet or a compound material made of PE or PP series resin as a material of the reinforcing block B into a gel state to form a block base material die 206, .

That is, the PE or PP series resin is injected into the heating cylinder (not shown) disposed inside the block base material extruder 202 through the hopper 204 of the block base material extruder 202 and is heated by a heater (not shown) And is simultaneously extruded toward the block base material die 206 by rotation of a screw (not shown).

The block base material die 206 is disposed on the front end side of the block base material extruder 202 and is extruded from the block base material extruder 202 and extruded from the block base material M having a predetermined shape do.

The block base material M is continuously extruded from the block base material die 206 so as to have the same cross-sectional shape as the cross-sectional shape of the reinforcing blocks B shown in Fig.

The block base material extruder 202 is a conventional extruding machine. In the present invention, a detailed description of the block base material extruder 202 is omitted, and similarly, a block base material die 206 is used to form a block The configuration of the block base material die 206 for extruding the base material M is well known in the art, and thus a detailed description thereof will be omitted.

The block base material sizing unit 208 is disposed on the front end side of the block base material die 206 as shown in the figure and the block base material cooling unit 210 is disposed on the front end side of the block base material sizing unit 208.

The block base material sizing unit 208 allows the block base material M to be molded in a precise dimension and a predetermined shape before the block base material M extruded from the block base material die 206 is completely cooled, The cooling unit 210 completely cools the block base material M that has passed through the block base material sizing unit 208, as is known to all.

The block base material sizing unit 208 and the block base material cooling unit 210 are well known in the art. In the present invention, the configurations of the block base material sizing unit 208 and the block base material cooling unit 210 are not particularly limited, The detailed description is omitted.

The block base material drawing machine 212 is disposed on the front end side of the block base material cooling section 210 and pulls the block base material M having passed through the block base material cooling section 210 with a certain force, To the cutter 220 side.

The block base material take-up machine 212 is configured to arrange a normal orbital take-off, that is, a mutually-interlocking motion and a follower sprocket (not shown), or a motion and a driven pulley (not shown) A plurality of endless track chains or belts are wound and rotated so that the block base material M is picked up between these upper and lower portions.

Here, an example of the machine 212 as a block base material has been described, but it will be understood by those skilled in the art that the machine 212, which is a block base material, is not limited to the above-described structure. That is, if the block base material M can be pulled and transferred to the block base material cutter 220 side, the block 212, which is a block base material, may have any form.

The block base material cutter 220 cuts the block base material M delivered from the block 212 as a block base material to a predetermined length so as to manufacture the reinforcing block B, The block base material M is cut so that the process does not stop.

That is, the block base material cutter 220 cuts the block base material M to a predetermined length while moving along the block base material M transferred from the blocker 212 as a block base material.

The block base material cutter 220 will be described in more detail with reference to Figs. 3 to 4C.

The block base material cutter 220 includes a moving table 222, a cutter 234 mounted on the moving table 222, and a moving cylinder 256 for moving the moving table 222 on which the cutter 234 is mounted do.

The apparatus further includes a control unit 268 that controls the block base material cutter 220 as a whole.

First, the moving table 222 is disposed on the upper surface of the bed 224 in a linear reciprocating motion along the conveying direction of the block base material M.

An LM guide 226 extending along the conveying direction of the block base material M is mounted on the upper surface of the bed 224 and slidably fitted on the LM guide 226 on the lower surface of the moving table 222 A low-LHS bearing 227 is mounted.

A first guard 228 and a second guard 230 are formed on the upper surface of the moving table 222 to guide the block base material M conveyed by the machine 212 as a block base material.

The first guard 228 and the second guard 230 are formed of two wall portions facing each other and extending along the conveying direction of the block base material M, The second guard 230 is formed to extend from the rear end of the moving table 222 facing the moving table 222 to the front end of the moving table 222. The second guard 230 is moved from the position spaced apart from the extending end of the first guard 228 to the moving table 222, As shown in Fig.

A cutting space portion 232 is formed between the extended end of the first guard 228 and the starting end of the second guard 230 so as to allow the cutter 234 to move in and out to cut the block base material M do.

That is, the moving table 222 reciprocates along the LM guide 226 by the operation of the moving cylinder 256 between the cutting start position and the cutting completion position, and the block base material M are conveyed along the inside of the first guard 228 and the second guard 230. [ After the block base material (M) is cut, the reinforcing blocks (B) cut by the cutter (234) are discharged to the inside of the second guard (230).

The cutter 234 is provided in the form of a vertical plate and is mounted on the moving table 222 so as to cut the block base material M in the width direction. That is, the cutter 234 is arranged such that the blade 236 of the cutter 234 is perpendicular to the conveying direction of the block base material M when viewed in plan.

The blade part 236 of the cutter 234 is arranged obliquely when the block base material cutter 220 is viewed from the front end so as to reduce the cutting resistance when the block base material M is cut.

The cutter 234 arranged as described above cuts the block base material M while moving into and out of the cutting space portion 232 by the operation of the cutting cylinder 238 as shown in the figure, Is fixed to the upper surface of the support table 240 which is disposed on the upper side of the moving table 222 so as to be extended after returning to the cutting space portion 232 side. And a cutter mounting head 242 to which a cutter 234 is coupled at the front end side is mounted at an extending end of the cutting cylinder rod 239. [

The support bar 240 to which the cutting cylinder 238 is fixed is supported by guide bars 244 vertically extending on the upper surface of the moving table 222 without interfering with the first guard 228 and the second guard 230. [ At this time, on both sides of the rear end of the cutter mounting head 242, a lift block 246 slidably fitted in the adjacent guide bar 244 is mounted.

That is, the cutter 234 cuts the block base material M while moving along the movement table 222 from the cutting start position to the cutting completion position, and then returns to the cutting start position along the movement table 222 The cutting cylinder 238 extends the cutting cylinder rod 239 to lower the cutter 234 and the cutter 234 descending by the cutting cylinder 238 is cut And is inserted into the space portion 232 to cut the block base material M. [

Conversely, when cutting of the block base material M is completed, the cutting cylinder 238 returns the cutting cylinder rod 239 to raise the cutter 232, whereby the cutter 234 is pulled out of the cut space portion 232 Is returned.

On the other hand, on the front end side and the rear end side of the cutter 234, a first pressurizing cylinder 248a and a second pressurizing cylinder 248b are disposed to prevent the block base material M from flowing when the block preform M is cut.

The first pressurizing cylinder 248a extends the first pressurizing cylinder rod 250a to press the block base material M guided inward of the first guard 228 and likewise the second pressurizing cylinder 248b presses the second pressurizing cylinder rod 250a, The cylinder rod 250b is stretched to press the block base material M guided to the inside of the second guard 230. [

To this end, the first pressurizing cylinder 248a and the second pressurizing cylinder 248b are connected to the first guard 228 and the second guard 230 by subframes formed so as not to interfere with the first guard 228 and the second guard 230, respectively. The first presser plate 252a and the second presser plate 252a are respectively disposed on the upper side of the second guard 230 and the extended ends of the first pressurizing cylinder rod 250a and the extending ends of the second pressurizing cylinder rod 250b, 252b.

The first pressurizing cylinder 248a and the second pressurizing cylinder 248b thus arranged are arranged in such a manner that while the block base material M is being cut, that is, from the cutting position to the cutting completion position, the first pressurizing cylinder rod 250a and the second pressurizing cylinder 248b, The rod 250b is extended to press the block base material M guided to the inside of the first guard 228 and the second guard 230 to prevent the block base material M from flowing, The first pressurizing cylinder 248a and the second pressurizing cylinder 248b return the first pressurizing cylinder rod 250a and the second pressurizing cylinder rod 250b to the block mother material M and the second pressurizing cylinder rod 250b, Thereby releasing the pressure to the reinforcing block (B).

Since the reinforcing block B is formed inside the second guard 230 simultaneously with the cutting of the block base material M, the second pressure cylinder 248b releases the pressure to the reinforcing block B at the time of completion of the cutting.

As shown in the drawing, the moving table 222 facing the cutting space 232 is provided with a cutter 234 which is lowered for cutting the block base material M and a cutter 234 for moving the cutter mounting head 242 and the moving table 222 A through hole 254 is formed so as to prevent the above-

The moving cylinder 256 linearly reciprocates the moving table 222 along the LM guide 226 mounted on the upper surface of the bed 224. That is, the moving cylinder 222 repeatedly moves the moving table 222 and the cutter 234 mounted on the moving table 222 to the cutting start position and the cutting completion position.

This moving cylinder 256 is disposed on one side of the upper surface of the bed 224 so as not to interfere with the moving table 222 as shown and the moving cylinder rod 258 of the moving cylinder 256 moves on the moving table 222, To a connection bracket 260 extending to the upper surface side of the bed 224 on the lower surface of the bed 224.

The first guard 228 is provided with a conventional wheel type rotary encoder 262 for detecting the conveying speed, conveying direction and length of the block base material M entering the first guard 228. The wheel-shaped rotary encoder 262 thus arranged is supported by a support bar (not shown) extending from the rear end side of the bed 224 so that the wheel 264 is brought into contact with the block base material M.

The wheel type rotary encoder 262 outputs a detection value such as a conveying speed, a conveyance direction and a length of the block base material M entering the first guard 228 to the control unit 268 side, Type rotary encoder 262, the moving cylinder 256 is operated based on the detection value of the wheel-

That is, the controller 268 controls the moving table 222 and the cutter 234 mounted on the moving table 222 at the same cutting speed as the feeding speed of the block base material M from the cutting start position to the cutting completion position, The moving cylinder 256 is operated to move to the cutting start position. As can be seen, the cutting length of the reinforcing block B can be adjusted by the speed sensed by the rotary encoder 262.

A first position sensor 263a and a second position sensor 263b for detecting the position of the cutter 234 are disposed on the upper surface of the moving table 222 adjacent to the cutting space 232. The first position sensor 263a and the second position sensor 263b are mounted on the upper and lower sides of a fixing bracket 264 extending vertically on the upper surface of the moving table 222. [

The first position sensor 263a mounted on the fixing bracket 264 limits the rise of the cutter 234 and the second position sensor 263b limits the fall of the cutter 234, The first position sensor 263a outputs a signal to the control unit 268 side and the control unit 268 outputs the signal to the cutter 234 in response to the first position sensor 263a The moving cylinder 256 is operated so that the moving table 222 and the cutter 234 mounted on the moving table 222 return to the cutting start position while stopping the operation of the cutting cylinder 238 .

When the moving table 222 and the cutter 234 mounted on the moving table 222 return to the cutting start position, the control unit 268 controls the moving table 222 and the cutter 234 mounted on the moving table 222, The first pressurizing cylinder 248a is operated so as to actuate the moving cylinder 256 to move the block mother material M guided to the inside of the first guard 228 and the second guard 230, The second pressurizing cylinder 248b and the cutter cylinder 238 are operated so that the cutter 234 can cut the block base material M. [

Conversely, when the contact bar 266 is sensed by the second position sensor 236b, the second position sensor 236b outputs a signal to the control unit 268 side, and the control unit 268 controls the cutter 234 such that the cutter 234 can not be further lowered The cutting cylinder 238 is operated so that the cutter 238 is lifted while the cutting cylinder 238 is stopped. Then, the first pressurizing cylinder 248a and the second pressurizing cylinder 248b are operated so that pressurization to the block base material M and the reinforcing block B is released.

The block base material M transferred from the machine 212 as a block base material is cut into a reinforcing block B by the operation of the block base material cutter 220 and the reinforcing blocks B are cut by the second guard 230, And is discharged to the outside of the block base material cutter 220 through the cutter.

Referring again to FIG. 1, the profile shaping means 300 includes a profile extruder 302, a profile die 306, a profile sizing section 308, a profile cooling section 310,

The profile extruder 302 melts a pellet or compound type material made of PE or PP series resin as a material of the profile P in a gel state and extrudes the material into the profile die 306 side .

That is, the PE or PP series resin is injected into the heating cylinder (not shown) disposed inside the profile extruder 302 through the hopper 304 of the profile extruder 320 and melted by the heater (not shown) And is simultaneously extruded toward the profile die 306 side by the rotation of a screw (not shown).

Here, the profile extruder 302 is a conventional extruding machine, and a detailed description of the profile extruder 302 is omitted in the present invention.

The profile die 306 is disposed on the front end side of the profile extruder 302 and is extruded from the profile extruder 302 into a profile of a tubular profile P having a predetermined shape, And the profile P is extruded so that the reinforcing blocks B are inserted into the hollow portion.

Figure 5 is a cross-sectional view of the profile die shown in Figure 1, wherein the profile die 306 has a first region S1, a second region S2, a third region S3, 4 region (S4).

The profile die 306 further includes a reinforcement block guide tube 320 for guiding the reinforcement blocks B manufactured in the reinforcement block forming means 200 into the profile die 306.

Here, the reinforcing block guide pipe 320 is disposed so as to extend from the rear end of the profile die 306 through the first area S1 to the second area S2 as shown in the figure.

First, the first area S1 of the profile die 306 is a section in which a PE or PP series melt is injected from the profile extruder 302, and the second area S2 is a section where the profile P starts to be molded to be.

At this time, the reinforcing block B is loaded into the second area S2 through the reinforcing block guide pipe 320, and the reinforcing block B starts to be formed in the second area S2 Is inserted so as to cross the hollow portion of the profile (P).

Here, the reinforcing block (B) is charged by manual operation of the operator, or is inserted through a reinforcing block aligner (not shown) that aligns the hollow portion of the reinforcing block (B) with the hollow portion of the profile .

The third area S3 of the profile die 306 is a section in which the reinforcing blocks B are squeezed in the hollow part of the profile P that has begun to be formed in the second area S2, As shown in the figure, the width is gradually reduced from the rear end side of the third region S3 to the front end side of the third region S3.

That is, since the profile P that has started to be formed in the second region S2 is not cured, the reinforcing blocks B charged through the reinforcing block guide pipe 320 are formed while passing through the third region S3, And is attached to the wall surface of the hollow portion of the profile P which is formed.

The fourth area S4 of the profile die 306 is a section in which the reinforcing blocks B are completely attached to the wall surface of the hollow portion of the profile P and are extruded.

On the other hand, on the reinforcing block guide pipe 320 exposed outside the profile die 306, the reinforcing block B is connected to the profile die 306 (not shown) while being in contact with the reinforcing blocks B guided along the reinforcing block guide pipe 320. [ A reinforcing block loading unit 330 for loading the reinforcing block into the reinforcing block loading space 330 is disposed.

The reinforcing block loading 330 includes first and second loading belts 332a and 332b and a driving motor 342 for transmitting a driving force to the first and second loading belts 332a and 332b.

The first loading belt 332a is disposed on the upper side of the reinforcing block inlet pipe 320 and includes first and second upper pulleys 334a and 334b spaced longitudinally of the reinforcing block inlet pipe 320, 336b.

The second charging belt 332b is disposed on the lower side of the charging block inlet pipe 320 and is connected to the first and second lower pulleys 334b and 336b spaced apart from each other in the longitudinal direction of the reinforcing block inlet pipe 320 And rotates.

The first and second upper pulleys 334a and 336a and the first and second loading belts 332a and 332b which are supported and rotated by the first and second lower pulleys 334b and 336b, The reinforcing block inlet pipe 320 facing the first and second charging belts 332a and 332b contacts the reinforcing blocks B that are guided along the slot 320 by cutting slots 338a and 338b, .

That is, the first and second charging belts 332a and 332b are in contact with the reinforcing blocks B through adjacent cutting slots 338a and 338b and are in contact with the first and second charging belts 332a and 332b The reinforcing blocks B are forcibly charged into the profile die 306 by the rotational force of the first and second loading belts 332a and 332b.

At this time, the induction rail 340 is inserted into the reinforcing block inflow pipe 320 so that the reinforcing blocks B charged along the reinforcing block inflow pipe 320 can be smoothly loaded into the hollow wall of the reinforcing block inflow pipe 320. As shown in Fig.

On the other hand, the drive motor 342 is fixedly mounted on the frame 344 on which the first and second upper pulleys 334a and 336a and the first and second lower pulleys 334b and 336b are rotatably supported, do.

The drive shaft 346 of the drive motor 342 is connected to the first upper pulley 334a via normal coupling. The driving force of the first upper pulley 334a is transmitted to the facing first lower pulley 334b. To this end, the first upper pulley 334a is equipped with the first transmission gear 348a and the first lower pulley 334b Is mounted with a second transmission gear 348b which meshes with the first transmission gear 348a.

That is, since the first upper pulley 334a is directly connected to the driving motor 342 and the first lower pulley 334b is connected to the first upper pulley 334a to transmit driving force, the first and second charging belts 332a And 332b cooperate with each other to force the reinforcing block B toward the profile base material die 306 side.

Referring again to FIG. 1, the profile sizing unit 308 is disposed on the front end side of the profile die 306 as shown, and the profile cooling unit 310 is disposed on the front end side of the profile sizing unit 308.

The profile sizing unit 308 allows the profile P to be molded with the correct dimensions and planned shape before the profile P extruded from the profile die 306 is completely cooled, The profile sizing unit 308 completely cools the profile P that has passed through the profile sizing unit 308. [

The profile sizing unit 308 and the profile cooling unit 310 are well known in the art. In the present invention, the configurations of the profile sizing unit 308 and the profile cooling unit 310 are not particularly limited. do.

The profile drawing unit 312 is disposed on the front end side of the profile cooling unit 310 and pulls the profile P passing through the profile cooling unit 310 with a certain force.

The profile drilling machine 312 is constructed of the same orbital drilling machine as the above-described block base machine, that is, the drilling machine 212, that is, a reciprocating drilling machine and a driven sprocket (not shown), or a drilling machine and a driven pulley And a plurality of endless track chains or belts are wound around each of them to rotate, thereby causing the profile P to be drawn between the upper and lower portions.

Here, although an example of the operation 312 as a profile has been described, it will be understood by those skilled in the art that the profile 312, which is a profile, is not limited to the above-described configuration. That is, if the profile P can be pulled and transported by a constant force, the profile 312, which is the profile, may have any form.

6, the reinforcing block B manufactured by the reinforcing block forming means 200 is automatically supplied to the profile die 306 side, as shown in FIG. 6, And a reinforcing block supplying means 400 for supplying the hollow portion of the reinforcing block B to intersect the hollow portion of the profile P to be formed.

3, 7A and 7B, the reinforcement block supply unit 400 receives the reinforcement blocks B discharged through the second guard 230 of the block base material cutter 220, A reinforcing block feed rail 410 for guiding the reinforcing block 320 to the guide pipe 320 side and a reinforcing block B guided along the reinforcing block supply rail 410 to the reinforcement block guide pipe 320 side, And actuators 420a and 420b.

Here, the reinforcing block supply rail 410 is connected at right angles to the reinforcing block guide pipe 320 when seen in plan so that the hollow portion of the reinforcing block B is supplied so as to intersect with the hollow portion of the profile P to be formed, At the extended end of the block guide tube 320 and the succeeding reinforcing block feed rail 410, the reinforcing block B is prevented from being separated from the reinforcing block guide rail 410 while preventing the detachment of the reinforcing block B guided along the reinforcing block feed rail 410. [ (412) facing the hollow portion of the base plate (320).

The actuators 420a and 420b are mounted on one side of the reinforcing block supply rail 410 facing the hollow portion of the reinforcing block inflow pipe 320 to connect the reinforcing block supply rail 410 and the reinforcing block guide pipe 320 The reinforcing block B supplied to the connecting portion is pushed to be supplied to the reinforcing block guide pipe 320 side.

Such actuators 420a and 420b may be conventional pneumatic or hydraulic cylinders as shown in FIG. 7A, and may also be conventional servo motors as shown in FIG. 7B.

That is, when the actuator 420a is a pneumatic or hydraulic cylinder for extending and retracting the rod 422a as shown in FIG. 7A, the actuator 420a is provided with a reinforcing block The actuator 420a mounted on the outside of the side of the rail 410 extends the rod 422a to the inside of the connecting portion of the reinforcing block supply rail 410 and the reinforcing block guide pipe 320, And the reinforcing block B guided to the connecting portion of the reinforcing block guide pipe 320 are fed one by one to the reinforcing block guide pipe 320 side.

At this time, on the side of the reinforcing block supply rail 410 facing the hollow portion of the reinforcing block guide pipe 320, an access hole 424a through which the rod 422a enters and exits is formed.

7B, when the actuator 420b is a servomotor for rotating the rotary shaft 422b, the actuator 420b is configured such that an extension of the rotary shaft 422b is connected to the reinforcing block feed rail 410 and the reinforcing block induction A push bar 424b is mounted on the extension end side of the rotation axis 422b and the actuator 420b mounted on the lower side of the reinforcing block supply rail 410 is disposed below the connection part of the pipe 320, Is guided to the connecting portion of the reinforcing block supply rail 410 and the reinforcing block guide pipe 320 by rotating the push bar 424b inside the connecting portion of the reinforcing block supply rail 410 and the reinforcing block guide pipe 320 And the reinforcing blocks B are supplied to the side of the reinforcing block guide pipe 320 one by one.

At this time, on the reinforcing block supply rail 410 connected to the reinforcing block guide pipe 320, a cutout hole 426b through which the push bar 424b goes in and out is formed.

Since the reinforcing blocks B cooled by the hollow portion of the profile P are inserted at the time of forming the profile P, the apparatus 100 for manufacturing a double-walled pipe for insertion of a synthetic resin double wall according to the present invention, It is possible to reduce the difference in the cooling rate inside the profile P so that the profile P can be suppressed from being distorted and grooves generated in the cooling process and winding process of the profile P.

The above-described block-inserted synthetic resin double wall pipe manufacturing apparatus 100 is not limited to the construction and the operation manner of the above-described embodiments. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

100: Block insert type synthetic resin double wall pipe manufacturing equipment
200: reinforcing block forming means 202: block base material extruder
206: block base material die 208: block base material sizing part
210: block base material cooling part 212: block base material drawing machine
220: block base material cutter 300: profile forming means
302: Profile extruder 306: Profile die
308: Profile sizing unit 310: Profile cooling unit
312: profile insole 320: reinforcement block guide tube
330: Welding of reinforcement block 400: Reinforcing block feeding means

Claims (14)

A block insert type synthetic resin double wall pipe manufacturing apparatus comprising:
The double-walled pipe manufacturing apparatus includes:
A block base material extruder for extruding a block base material, a block base material die, a block base material sizing portion, a block base material cooling portion, a block base material drawer, and the block base material transferred from the block base material, Reinforcing block forming means having a block base material cutter; And
A profile extruder for extruding a profile into which the reinforcing blocks are inserted in the hollow portion, a profile die, a profile sizing portion, a profile cooling portion, and profile forming means having a profile inserting portion,
Wherein a hollow portion of the reinforcing block is inserted into the profile die through a reinforcing block guide pipe in a direction crossing the hollow portion of the profile.
The method according to claim 1,
The double-walled pipe manufacturing apparatus includes:
And a reinforcing block supplying means for supplying a hollow portion of the reinforcing block to the profile die side so as to intersect the hollow portion of the profile to be formed,
Wherein the reinforcing block supply means comprises:
A reinforcing block supply rail for receiving the reinforcing blocks discharged through the block base material cutter and guiding the reinforcing blocks to the reinforcing block guide pipe;
And an actuator for switching the direction of the reinforcing blocks guided along the reinforcing block supply rail toward the reinforcing block guide rail,
Wherein the reinforcing block supply rail is connected to the reinforcing block guide tube at a right angle when viewed from a plane.
The method according to claim 1,
The block base material cutter includes:
A moving table disposed on an upper surface of the bed so as to be able to linearly reciprocate along the conveying direction of the block base material;
A cutter mounted on the moving table and guided along the moving table to cut the block base material in the width direction so that the reinforcing block is manufactured; And
Wherein when the block base material is cut, the moving table on which the cutter is mounted is moved in the same speed and direction as the moving speed and the moving direction of the block base material, and when the block base material is cut off, A double - walled tube manufacturing apparatus for a block - inserted synthetic resin double wall including a cylinder.
The method of claim 3,
An ELM guide extending along a conveying direction of the block base material is mounted on an upper surface of the bed and an ELM bearing slidably fitted on the ELM guide is mounted on a lower surface of the moving table,
A first guard and a second guard are formed on an upper surface of the moving table for guiding the block base material transferred from the block base material,
Wherein the first guard is formed so as to extend from a rear end of the moving table opposite to the block base material to the front end side of the moving table and the second guard extends from a position spaced apart from the extending end of the first guard, And is extended to the front end,
Wherein the cutter is provided between the extending end of the first guard and the starting end of the second guard to cut the block base material.
The method of claim 4,
Wherein the cutter cuts the block base material into and out of the cutting space portion by operation of a cutting cylinder,
Wherein the cutting cylinder is fixed to an upper surface of a support stand spaced apart from the upper side of the moving table so that the cutting cylinder rod is extended to the cutting space side and then returned to the cutting space side, A cutter mounting head to which the cutter is coupled is mounted,
Wherein the support base is supported by guide bars extending vertically on the upper surface of the moving table and a lift block slidably fitted on the guide bar adjacent to the rear end of the cutter mounting head is mounted, .
The method of claim 4,
A first pressurizing cylinder and a second pressurizing cylinder for preventing the flow of the block base material when the block base material is cut are disposed on the front end side and the rear end side of the cutter,
The first pressurizing cylinder presses the block preform guided inward of the first guard by extending the first pressurizing cylinder rod, and the second pressurizing cylinder extends the second pressurizing cylinder rod to guide the inside of the second guard The block base material is pressurized,
And the first and second pressure plates are respectively mounted on the extended ends of the first and second pressurizing cylinder rods.
The method of claim 5,
Wherein the moving table facing the cut space part has a through hole formed therein for preventing the cutter from descending to cut the block base material and from colliding the cutter mounting head with the moving table.
The method of claim 4,
The moving cylinder is disposed on one side of the upper surface of the bed,
Wherein the moving cylinder rod of the moving cylinder is connected to a connecting bracket extending from the lower surface of the moving table to the upper surface side of the bed.
The method of claim 5,
The first guard is provided with a wheel-type rotary encoder for detecting the conveying speed, the conveying direction and the length of the block base material entering inward,
And a first position sensor and a second position sensor for sensing the position of the cutter and controlling the operation of the cutting cylinder are disposed on an upper surface of the moving table adjacent to the cutting space, .
The method according to claim 1,
The interior of the profile die,
A first region where the melt is injected from the profile extruder;
A second region in which the profile starts to be formed and the reinforcing blocks are loaded through the reinforcing block inlet pipe;
A third region in which the reinforcing blocks are squeezed in a hollow portion of the profile that has begun to be formed in the second region; And
And a fourth region in which the reinforcing blocks are extruded in a state that the reinforcing blocks are completely attached to the wall surface of the hollow portion of the profile,
And the third region is formed such that the width thereof is gradually reduced from the rear end side to the front end side.
The method of claim 10,
Wherein the reinforcing block guide tube extends from the rear end of the profile die through the first area to the second area,
Wherein the reinforcing block guide is exposed on the outside of the profile die,
The reinforcing-block-
A first loading belt disposed on an upper side of the reinforcing block inlet pipe and supported and rotated by first and second upper pulleys spaced apart in the longitudinal direction of the reinforcing block inlet pipe;
A second charging belt disposed on a lower side of the reinforcing block inlet pipe and supported and rotated by first and second lower pulleys spaced apart in the longitudinal direction of the reinforcing block inlet pipe; And
And a driving motor for transmitting a driving force to the first and second charging belts,
Wherein the first and second charging belts are brought into contact with the reinforcing blocks guided through the reinforcing block inlet pipe to guide the reinforcing blocks to the profile die side in the reinforcing block inlet pipe facing the first and second charging belts A double-walled pipe manufacturing apparatus for a block-inserted synthetic resin double-walled pipe in which an incision slot is formed to allow for forced loading.
The method of claim 2,
The reinforcing block guide rail is connected to the reinforcing block guide rail at an extension of the reinforcing block guide rail. The reinforcing block guide rail is provided at an extension of the reinforcing block guide rail. A block insertion type synthetic resin double wall pipe manufacturing apparatus in which a protrusion is formed.
The method of claim 2,
Wherein the actuator comprises:
A pneumatic cylinder or hydraulic cylinder for extending and returning the rod,
The actuator is mounted on the lateral side of the reinforcing block feed rail facing the hollow of the reinforcing block guide tube and the actuator extends the rod to guide the reinforcing block feed rail and the reinforcing block guide tube And supplying the reinforcing block to the side of the reinforcing block guide pipe.
The method of claim 2,
Wherein the actuator comprises:
A servo motor for rotating a rotary shaft,
Wherein the actuator is mounted on an outer side of the lower surface of the reinforcing block supply rail such that an extension end of the rotary shaft is disposed below a connection portion between the reinforcing block supply rail and the reinforcing block guide pipe,
And the reinforcing block guided to the connecting portion of the reinforcing block supplying rail and the reinforcing block guiding pipe is supplied to the reinforcing block guiding pipe side while rotating along the rotation axis on the extending end side of the rotating shaft.

Images