KR20010106311A - Automatic pipe forming machine - Google Patents

Abstract

A process for making polyimide composition comprising reacting at least one diamine, at least one tetracarboxylic diacid diester, selected phosphoramide and at least one base catalyst to form at least one polyimide compound, said reaction carried out at a temperature from about 20 °C to about 60 °C and wherein the molar ratio of diamine:tetracarboxylic diacid diester:phosphoramide:base catalyst is in the range of 0.8-1.2:1:2.5-4.0:2.5-4.0.

Description

Automatic pipe forming machine

The present invention relates to forming and assembling of thin and long pipes, and in particular, the long and thin pipes are easily bent in handling, resulting in high defects and the conventional molding method, which was dependent on manual operation, from the supply of the final molded article. It relates to a pipe automatic molding machine automated.

Hereinafter, a process of forming and assembling a fuel pipe for an automobile by a conventional method will be described.

According to the conventional method, the raw material is cut to an appropriate length, chamfered at both ends, and the outer circumferential surface of the material is marked with a paint or the like to be clamped at the time of assembly to the actual vehicle. In displaying the clamp position on the material, the worker had to mark the length one by one while checking the length of the corresponding position, thereby decreasing the productivity and marking the inappropriate position by inadvertent work.

After marking the surface of the material, fastening nuts and tubes are inserted. The fastening nut is for coupling with other parts when assembling and the tube is for preventing abrasion of the interference part with the vehicle body, and the number of these parts can be increased or decreased depending on the type or installation location of the vehicle. Manual work by the problem is that the work efficiency is reduced and requires a large number of personnel. On the other hand, in performing such a work manually, there is also a problem in that bending may be easily generated in the material during assembly of additional parts such as the fastening nut or the like during conveyance of the material, thereby increasing the likelihood of defective products.

After inserting the fastening nut and tube into the material by the same process as described above, the end portion of the material is pressurized to expand and then the other end is equally expanded. As described above, the pipe forming operation according to the prior art is separated from the marking operation to the end forming operation, respectively, and the movement is made to the next process after one process is finished. That is, each process is made discontinuously, a number of people are required for each process has a problem that the production cost increases.

Accordingly, the present invention devised to solve the above problems is an object of the present invention to provide a pipe automatic molding machine that allows the entire process from the supply of the material to be continuous work by the automatic line.

In addition, another object of the present invention is to provide a pipe automatic molding machine which enables continuous operation and at the same time there is no defect caused by deformation of the material due to bending during the transfer of the material.

1-schematic configuration diagram of a pipe automatic molding machine according to an embodiment of the present invention

Figure 2-showing the operating relationship of the material feeder.

3-a plan view of the transfer screw.

4-a schematic side view of a marking machine.

5-Schematic diagram of the main parts of the chamfering machine.

6-a schematic plan view of a chamfering machine;

7-a detailed view showing the structure of the carrying part.

8-Top view of the molding machine part.

9-a detailed plan view of the first end enlargement;

Fig. 10-Fig. 9 are schematic perspective views of the crawler and the clamping portion in Figs.

11-A plan view of the tube insert and a schematic perspective view of the press roller body.

<Description of Major Symbols Used in Drawings>

90: material feeder 91: loading table

92: selected cylinder 93: discharge mechanism

94: fixed bar 100: marking machine

110: reservoir 120: marking roller

130: electric mechanism 140: guide plate

200: chamfering machine 210: driving belt

220: alignment unit 230: carrying unit

240: pressure plate 250: brush

260: side plate 300: transfer mechanism

310: fixed plate 320: moving plate

400: molding machine 410: first end expansion portion

420: tube insertion portion 430: second end expansion portion

411: infinite track 412: nut feeder

413: clamping portion 414: punch

421: moving roller 422: tube cutting machine

423: press-fit roller 500: inspection device

The present invention for achieving the above object, the material is placed on the mounting table and the material supply to be supplied to the material by a transfer arm formed on the upper; A marking device for marking a processing part on the surface of the material by contact with an outer surface of the supplied material and a marking roller coated with a marking liquid; A chamfering device for smoothly forming both ends of the material by contacting the rotating brush; The transfer plate is formed with a plurality of fixed plate and the moving plate in parallel to be arranged in a pair of fixed plate and the moving plate to form a continuous sawtooth and moving the material located on the fixed plate to the next space by the shanghaidong of the moving plate An appliance; And a molding machine in which end molding, fastening nut insertion, and tube insertion of the transferred material are sequentially arranged on the outside of the transfer mechanism, to be formed and assembled on an automatic line of a long material such as pipes. It relates to a pipe automatic molding machine.

Pipe automatic molding machine according to the present invention has the advantage of being able to continuously form the pipes that are not easy to handle and easily deformed and to assemble the additional parts are thin and long.

1 is a view illustrating a schematic configuration of a pipe automatic molding machine according to an embodiment of the present invention, and as shown, a material feeder 90, a marking machine 100, a chamfering machine 200, and a transport mechanism 300. And the molding machine 400 is made large.

The molding machine 400 is installed to the front and rear of the transfer mechanism 300 and consists of a first end expansion portion 410, tube inserting portion 420 and the second end expansion portion 430, preferably the transfer At the extreme end of the mechanism 300, an inspection apparatus 500 is installed to inspect the dimensions of the final product.

In the material feeder (90), a large amount of material is loaded on the loading table (91), and the transfer arm has a function of dropping the material to the outlet (91a) formed in the loading table (91) by picking up the material on the upper portion of the loading table. 93e) is installed. The transfer arm 93e is attached to the discharge mechanism 93 formed on the fixed bar 94, and a selection cylinder 92 is also provided at the end of the piston 92a provided with a magnetic body 92b.

When the piston 92a of the selection cylinder 92 is lowered to the mounting table 91, only one of the materials is attached to the magnetic body 92b formed at the end of the piston, and then the selection cylinder 92 is raised again. . The material spaced apart from the mounting table 91 by the selection cylinder 92 is transported to the outlet 91a formed at the mounting table 91 by both ends of the material supported by the discharge mechanism 93 and dropped. Will let you.

In addition, a plurality of transfer screws 70 are installed and rotated directly under the outlet 91a to transfer the dropped material.

Next, the material is put into the marking machine 100 and the actual fastening position is displayed when assembling on the outer surface of the material by the marking machine 100. The marking on the surface of the material allows the marking roller 120 to be smoothly displayed on the surface of the continuously supplied material while making direct contact with the material by rotating as the marking roller 120 is deposited on the marking liquid.

The material passed through the marking machine 100 is both ends thereof are polished while passing through the chamfer 200 is provided with a brush to remove the scratches generated after the cutting process such as a burr (burr) at both ends thereof, and then The material is supplied to the transfer mechanism 300.

The transfer mechanism 300 is a pair of fixed plate 310 and the moving plate 320 forming a continuous tooth shape is arranged in pairs in parallel to the length of the material and the moving plate 320 is moved up and down By doing so, the material 50 moves the teeth of the fixing plate 310 by one space. Upper and lower sides of the transfer mechanism 300 as the molding machine 400, the first end expansion tube 410, tube inserting portion 420 and the second end expansion tube 430 is appropriately disposed to form both ends of the material and additionally A fastening nut or tube is inserted as a part.

In the above, the configuration of the pipe automatic molding machine according to an embodiment of the present invention as a whole has been described schematically, hereinafter will be described in more detail with reference to Figure 1 and the accompanying drawings.

First, the material feeder will be described in detail with reference to a view showing an operation relationship of the material feeder of FIG. In FIG. 2, the mounting table is not shown. As shown in FIG. 1 and FIG. 2, the material feeder 90 is composed of a mounting table 91, a selection cylinder 92, and a discharge mechanism 93, and the discharge mechanism 93 is opened and closed. Arm 93e is installed. The mounting table 91 is provided with a pair of v-type receiving parts spaced apart from each other by a predetermined interval, and the space formed as a material is introduced into a pipe, and becomes a discharge port supplied to the lower side.

On the upper left and right sides of the mounting table 91, a pair of selection cylinders 92 and a discharge mechanism 93 are installed. The mounting bars are formed in parallel with the mounting table. The selection cylinder 92 is formed extending from the fixed bar 94, the magnetic material (92b) is installed at the end of the piston (92a) to move up and down and spaced apart upward.

Next, the discharge mechanism will be described. The first arm body 93a and the second arm body 93b can be divided into the first arm body 93a and the selection cylinder 92 as shown in FIG. It is fixed to the left side of the fixed bar 94, the left and right transfer cylinder (93c) is installed from one side and the end of the piston formed in the left and right transfer cylinder (93c) grippers for picking up the pipe material 93d ) Are combined. The gripper 93d is moved to the left and right by the operation of the left and right transfer cylinder 93c, and a transfer arm 93e is formed at a portion to directly fix the pipe. Operation of the transfer arm (93e) is able to pick up the material as the opening and closing is made by the hydraulic pressure, but this is a well-known technology and further detailed description will be omitted.

Subsequently, when the second arm body 93b is described, the second arm body may be moved forward and backward and left and right to drop the material to the outlet 91a, and more specifically, the selection cylinder 92. It is provided on the opposite side of the first arm body (93a) with a gap between and consists of a guide (93f), the front and rear transfer cylinder (93g), the left and right transfer cylinder (93c), the grip member (93d). The guide 93f is installed on the lower side of the fixed bar 94 for a long time, and the front and rear transfer cylinder 93g is coupled to the guide 93f, and the left and right transfer cylinder 93c is integrated under the front and rear transfer cylinder 93g. It is fixedly coupled. A piston is formed in the left and right transfer cylinder 93c, and a gripper 93d is coupled to an end thereof, and the gripper and the transfer arm 93e formed therein move left and right according to the left and right movement of the piston.

The transfer arm 93e formed on the second arm body 93b does not fix the material but may move the front and rear transfer cylinder 93g while supporting the material when the transport arm is closed. To be. According to the length of the material, it is preferable that the second arm body 93b is provided so that a plurality of the second arm bodies 93b can be prevented from sagging downward.

2 shows that the material is moved from the loading table 91 to the discharge port 91a by the selection cylinder 92 and the discharge mechanism 93. The magnetic body 92b attached to the piston of the selection cylinder 92 is shown in FIG. One material is selected and moved upward, and the transfer arm 93e of the first arm body 93a and the second arm body 93b is closed as shown in the beam b. One end of the material is fixed by the transfer arm 93e formed on the first arm body 93a, and the support arm 93e of the second arm body 93b surrounds and supports the outer circumferential surface of the material. Is achieved.

Subsequently, the second arm body 93b is moved to the other end side of the material along the guide 93f by the front and rear transfer cylinder 93g, as shown in the seed c, so as to support both ends of the material so as to be transportable. . Next, as shown in the die d, the left and right transfer cylinder 93c of the second arm body and the left and right transfer cylinder 93c of the first arm body 93a are operated to move the material directly above the outlet. do. In this state, the transfer arm 93e is opened and the material falls to the discharge port 91a. A pair of selection cylinders 92 and discharge mechanisms 93 are formed on the upper and upper sides of the mounting table 91 to continuously supply materials.

When the material is injected into the outlet by the material feeder 90, the material is placed on the bone of the transfer screw 70 installed directly below the outlet, and the material is aligned to one side by rotating the feed screw. do. That is, the transfer screw 70 is a portion for introducing the material into the marking machine 100 which is the next process, and will be described in detail with reference to a plan view of the transfer screw of FIG.

The transfer screw 70 is to function to discharge the material to the marking machine 100 by the interaction with the drive motor 71, the cam mechanism 72 and the alignment plate 73, the frame as shown in FIG. A plurality of transfer screw 70 is installed in parallel on the upper surface of the cam screw 72 is formed below the transfer screw. The transfer screw 70 and the cam mechanism 72 is connected to the drive motor 71. Power is transmitted from the drive shaft (71a) and a pulley is provided on the rotary shaft of the respective transfer screw 70 so that the input and output can be performed at the same time, and the cam mechanism 72 is a rack gear 72a, a pinion gear ( 72b), a pusher 72c and a connecting rod 72d, and interlocked with the drive shaft 71a.

When the material is continuously supplied from the upper portion of the transfer screw 70, the material is placed in the valley of the transfer screw and the alignment is made by touching the alignment plate 73 formed on one side while being advanced by the rotation of the transfer screw and the When the end of the transfer screw 70 reaches the end material is dropped and the dropped material is placed on the pusher 72c is advanced. The material raised on the pusher is placed on the upper surface of the frame as the pusher is retracted, and when the pusher is advanced again, the material placed on the frame is discharged and a new material is dropped and placed on the upper surface of the pusher.

Next, the configuration of the marking machine applied to an embodiment of the present invention will be described with reference to FIG. FIG. 4 schematically shows a side view of the marking machine 100 in FIG. 1, and includes a storage tank 110, a marking roller 120, a transmission mechanism 130, and a guide plate 140. When the material is supplied by the transfer screw 70, the material is rotated and moved by the marking roller 120 and the guide plate 140 so that the marking liquid is coated on the surface of the material. The transmission mechanism 130 is composed of a drive shaft 131, the electric gear 132 and the intermediate gear 133.

More specifically, the reservoir 110 is a container for storing a liquid having a narrow width and an upper portion thereof, and is attached to a frame so as to move left and right. A marking liquid of a predetermined height or more is filled inside the reservoir and both side walls are filled. An installation groove in which the marking roller 120 may be installed is formed. The thickness of both side walls of the reservoir 110 is made thin so that a separate reinforcing member 115 is inserted into the installation groove and the marking roller 120 is inserted in order to increase safety and durability.

In addition, the marking roller 120 has both center shafts inserted into the reinforcing member 115 to rotate, and the locking jaw 121 is provided to prevent the marking liquid from flowing down. The marking roller 120 has an outer circumferential surface of the marking roller 120. By inserting the band 123 made of a rubber material so that sufficient friction force is generated when the material and the marking roller 120 is in contact with each other so that the marking liquid is well coated on the surface of the material.

A plurality of the storage tank 110 may be installed on the frame at the same time, the driving shaft for providing a rotational force to the marking roller 120 is connected to a drive motor (not shown) and the drive shaft 131 a plurality of electric gear 132 ) Is installed and engaged with the intermediate gear 133 formed in the marking roller 120 to function to rotate the marking roller 120.

The electric gear 130 is installed on the drive shaft 131 as many as the number of the reservoir 110 and moved together according to the position of the reservoir 110 to transmit the rotational force of the drive shaft to the marking roller 120. The intermediate gear 133 is used to engage the electric gear 132 to rotate the marking roller 120, and the intermediate gear is fastened to the center shaft end of the marking roller.

The guide plate 140 is installed on the upper side of the marking roller 120, which provides an appropriate pressing force so that the material to be supplied is in contact with the outer surface of the marking roller 9120 and rotated at the same time. And the lower surface of the guide plate 140 is preferably to achieve the same curvature as the marking roller 120, so as to be supported by a spring to be automatically adjusted up and down according to the thickness of the material.

The marking machine 100 is preferably to be used universally by appropriately moving the reservoir 110 and the electric gear 132 as the length or marking position of the material changes.

The material passing through the marking machine 100 is introduced into the chamfer 200 by another transfer screw 70, Figure 6 shows a schematic view of the main portion of the chamfer.

The chamfering machine 200 is composed of a driving belt 210, an alignment unit 220, a conveying unit 230, a pressure plate 240 and a brush 250, the driving belt 210 is wound on a pulley and rotated, etc. A plurality of parallel to each other is installed and the alignment unit 220 is installed on the upper side of the drive belt (210). The alignment unit 220 preferably installs the same number as the number of the drive belts 210, and functions to arrange the materials moved along the drive belts in a straight line. The chamfering machine 200 is particularly suitable for processing materials such as pipes that are thin and long and easily bent, so that the material introduced onto the driving belt is partially bent or twisted, and thus the circuit breaker 220c of the alignment part 200. 220d) is lowered on the drive belt 210 to arrange the material in a straight line.

Between the plurality of drive belts is provided with a conveying unit 230 which is moved up and down, and the breaker is pushed upward by the conveying portion is raised and the material is advanced again on the main roller 231 is formed in the conveying unit To be put on. The main roller 231 is plural number is interlocked by the belt and the material is moved to one side in the rotational direction and the material is in contact with the side plate 260 to maintain a constant position.

The material moved to one side is introduced into the pressure plate 240 while being advanced along the driving belt 210 as the carrying unit 230 descends again. Brush 250 is formed on one side of the pressing plate, that is, the material is moved to one side by the conveying unit and the brush is rotated to smoothly chamfer the end of the material.

The pressing plate 240 exerts an appropriate pressing force on the material, whereby the material is advanced while being rotated by friction with the driving belt 210, and at the same time, end chamfering is performed by the brush.

The chamfering machine 200 performs chamfering of one end of the material and forms a structure in which the other end chamfering is completed by another brush 250 formed on the other side, and chamfering of both ends is completed. A schematic plan view of the machine is shown.

Drive shafts 211 and driven shafts 212 are installed at both ends in the longitudinal direction on the frame, and the drive shafts are connected to the drive motor 213 to be rotated, and the drive shafts 211 and driven shafts 212 are provided with a plurality of pulleys. It is fastened with the driving belt 210 is made to rotate.

The material supplied to the driving belt 210 is aligned in a straight line by the first alignment unit 220a and then conveyed in the direction in which the first side plate 260a is formed by the first transport unit 230a. . When one side end of the material is rearranged uniformly, the material is moved between the first pressing plate 240a and the driving belt 210, and one side end chamfering of the material is made by the first brush 250a.

The material on which one side end chamfering of the material is completed is continuously advanced along the driving belt and is aligned again by the second alignment unit 220b, and the second side plate 260b is formed by the second carrier 230b. The material is conveyed to the side to be formed. Thereafter, the raw material is introduced between the second pressing plate 240b and the driving belt 210, and an untreated end chamfer is performed by the second brush 250b.

More specifically, the alignment unit 220 is composed of a first circuit breaker 220c and a second circuit breaker 220d, which are connected by the switching member 222 to move in opposite directions. That is, when the first circuit breaker 220c is lowered, the second circuit breaker 220d is raised so that the material is advanced and aligned by the first circuit breaker. When the first circuit breaker 220c is raised by the carrying unit 230, the second circuit breaker 220d is lowered to prevent the material from moving forward.

The first circuit breaker 220c is formed on one side of the block 221 installed on the upper portion of the driving belt 210, and the upper end portion is inserted into the support plate 221a and guide pins formed on the block 221. 223 is inserted into and fastened to the track-shaped hole 224 formed on the side of the first circuit breaker 220c. And protruding protrusion plate 225 is formed on the lower side of the first circuit breaker (220c) is formed to the outer side of the drive belt is in contact with each other when the push plate 237 installed on the carrying unit 230 is raised The first circuit breaker 220c is pushed upward.

The second circuit breaker 220d is spaced apart from the first circuit breaker 220c so that the guide pin 223 is inserted into the track-shaped hole 224 of the side of the block 221, and the upper end of the second circuit breaker 220d is supported by the support plate (1). 221a). In addition, the guide pin 223 formed in the second circuit breaker 220d is fitted with a switching member 222 having one side open, and one side of the switching member 222 is recessed in the guide to be coupled to the second circuit breaker. The switching pin 226 is coupled to the pin 223 and protrudes from the other side, and the rotation pin 227 formed from the block adjacent to the switching pin is inserted and coupled thereto.

On the other hand, the switching pin 226 formed on the switching member 222 is formed to be in contact with the other switching pin 226 protruding from the first circuit breaker 220c and the second circuit breaker 220d The spring 228 is preferably connected to the block 221 so that a force that can be lowered when the first breaker rises is generated.

When the first breaker 220c is lowered, the two switching pins 226 abut and thus the switching member 222 is rotated about the pivot pin 227 to move the second breaker upward. To be. On the contrary, when the first circuit breaker 220c rises, the second circuit breaker 220d is lowered by the driving belt by its own weight and a spring to block the advancement of the material.

Detailed structure of the carrying unit will be described with reference to FIG. 8. 8 is a detailed view showing the structure of the conveying part, and as shown, a separate motor 238 is installed to drive the belt, and the main roller 231 and the auxiliary roller are connected to one belt on the left and right sides of the motor, respectively. (232) to work together. The main roller 231 is installed in the sliding guide 234 is fixed to the upper end of the sliding plate 235 which can be moved Shanghai and the auxiliary roller 232 is connected to the sliding plate 235 bar 236 As combined with and to move up and down at the same time according to the movement of the sliding plate. A push plate 237 is installed at an upper end of the sliding plate 235 and a chopper (below) of the main roller 231 and the auxiliary roller 232 connected by the sliding plate 235 and the connecting bar 236. 233 is formed is configured to push the connecting bar 236 upwards.

The chopper 233 is coupled to one long straight bar 233a, one end of the plurality of bending plates 233b is coupled to the other end of the roller 233c formed with a groove is fastened and the top of the bending plate is fixed to be rotatable The roller 233c moves up and down by moving the straight bar 233a from side to side.

The main roller 231 is installed between a plurality of drive belts 210 to be rotated in a certain direction at the same time to move the material to one side and is installed to be rotatable on the shaft protruding on the sliding plate and the belt at one end Is provided with a belt groove (231a) is fitted, the other side is provided with an inclined slope (231b) is loaded material. A plurality of materials are placed on the slope 231b to simultaneously transport the materials in one direction.

Subsequently, the transfer mechanism 300 and the molding machine 400 will be described. The molding machine 400 is sequentially disposed along the transfer mechanism 300, and in one embodiment of the present invention, the first end expansion part 410, the tube insertion part 420, and the second end expansion part 430. By arranging the two ends of the material to be assembled and ancillary parts. However, the present invention is not limited thereto, and by installing a plurality of end expansion units according to the shape of the end of the material, various types of products may be produced in one line.

As shown in FIG. 1, the transfer mechanism 300 is formed of a fixed plate 310 and a moving plate 320 which are disposed to be offset while forming the same tooth shape, and the moving plate 320 is moved up and down. The material placed on the fixed plate 310 is moved to the next compartment. The fixed plate 310 and the movable plate 320 having the structure as described above form a pair, and these are arranged in parallel in consideration of the length of the material or the amount of deflection so that the material can be smoothly transferred. do.

On the other hand, FIG. 8 attached shows the top view of the said molding machine part. As shown, the first end expansion unit 410, the tube as the forming machine 400 to the upper and lower sides of the transfer mechanism 300 is arranged in parallel with a plurality of the fixed plate 310 and the moving plate 320 are arranged in parallel The insertion part 420 and the second end expansion part 430 are installed.

First, the first end expansion unit 410 will be described in more detail with reference to FIGS. 9 and 10. The first end expander 410 is formed on the upper side of the transfer mechanism 300 and is configured as an endless track 411, a nut feeder 412, a clamping part 413, and a punch 414. The crawler 411 pushes the material conveyed by the transfer mechanism 300 to the upper part and supplies it to a position where end forming of the material is possible. The fastening nut 412a supplied by the nut feeder 412 is inserted into the outer surface of the material while the material is moved upward by the endless tracker 411. Next, the clamping part 413 is inserted into the material. The movement is made to the position set by passing and sensing of the sensor 415. When the material is moved to the set position, the clamping part 413 is wrapped around the material and fixed, and the punch 414 installed on the upper part of the clamping part 413 is moved to expand the end of the material.

FIG. 10 is a schematic perspective view of the infinite crawler (a) and the clamping part (b), and the infinite crawler 411 is a first track 411a and a second track (rotated in opposite directions). 411b), and more specifically, the first orbital conductor 411a and the second orbital conductor 411b are composed of a belt 411c and a pulley 411d so that repeated rotation is made and the material is introduced. The first tracker 411a is moved toward the second tracker 411b to move the material upward by direct friction between the material placed therebetween and the belt 411c. The first tracker 411a is coupled to an end of a piston of a cylinder (not shown) operated by hydraulic pressure or pneumatic to move left and right, and the power transmission is performed as shown in FIG. 10 by a pulley 411d. The first driven gear 411e is installed at a lower portion thereof, and configured to transmit power by coupling with the first driving gear 411f. It is apparent that the power transmission method is not limited to this, and it is obvious that the belt can also be rotated by directly coupling a motor to the pulley shaft.

Subsequently, the clamping portion 413 shown in FIG. 10 has an insertion groove 413a formed to surround and fix the outer surface of the supplied material, and the shape of the clamping portion 413 is formed so that the material can be expanded at one end facing the punch 414. The molding portion 413b is formed. The figure shows the state of one side of the clamping portion 413 and the clamping portion is also fixed to one side and the other side to be moved left and right to move the clamp to move the material is fixed to advance the material. In addition, the shape of the molding part 413b may be manufactured differently according to the type of product, and the illustrated one corresponds to one example.

In addition, in the first end expansion part 410, additional parts, such as a fastening nut 412a, can be inserted at the same time as the end molding of the material. In one embodiment of the present invention, the material is used when combining the material with other elements. The fastening nut is to be supplied in conjunction with the supply of the material by the nut feeder. The nut feeder is a generally known technique, and thus detailed description thereof will be omitted.

A tube inserting portion 420 is formed after the first end expanding portion 410, where a tube 423g is inserted to protect the outer surface of the material. For example, a pipe used as a fuel pipe of an automobile may be bent many times and may come into direct contact with the vehicle body during assembly. Such direct metal contact will eat up the surface of the product and if this condition is maintained for a long time, it may cause oil leakage.

Therefore, in order to prevent such a problem is to install a tube of rubber material. 11 is a plan view (a) of the tube inserting portion 420 and a schematic perspective view (b) of the press-fit roller body.

The material formed while passing through the first end expansion part 410 is continuously transported by the transport mechanism 300, and the material is transported to allow the material to be supplied to the tube inserting part 420. A moving roller 421 is installed to move downward of the mechanism 300. The moving roller 421 is a cylindrical body that is rotated to rotate while making contact with the outer surface of the material to move the material located on the upper side of the transfer mechanism 300 to the lower side. The material moved to the lower side of the transfer mechanism by the moving roller 421 is made to be introduced into the tube inserting portion 420, and at the same time the tube 423g cut by the tube cutter 422 is press-fitted The movable roller body 423b, which is positioned between the roller bodies 423 and moved left and right of the press-fit roller body 423, is moved to rotate while pressing the tube 423g to push the tube toward the end side of the inserted material. The tube can be inserted into the outer surface of the material while raising.

Next, the structure and operation of the press-fit roller body 423 will be described in more detail with reference to FIG. 11.

The press-fit roller body 423 consists of a pair of fixed roller body 423a and a movable roller body 423b facing each other, and a rotation guide 423c is provided therebetween. On the other hand, the press-in roller body 423 is rotated in the opposite direction and the continuous rotation is made by the belt 423h and the pulley 423i. And between the stationary roller body (423a) and the movable roller body (423b) is the material and the tube (423g) is positioned so that the tube is fitted to the outer surface of the material bar is inserted into the tube 423h Should have a sufficient horizontal portion and the other side should adjust the belt 423h appropriately as the guide roller 423d so that there is no interference with the belt bar on which the rotation guide 423c should be installed.

Particularly, in the part into which the tube 423g is inserted, the first guide roller 423e is installed inside the belt so that sufficient friction force between the belt 423h and the tube can be generated, and the second guide roller 423f is the first guide roller 423f. It is formed on the side opposite to the one guide roller 423e so as not to interfere with the rotation guide 423c and the belt formed between the fixed roller body 423a and the movable roller body 423b.

In addition, the power transmission of the press-fit roller body 423 forms the shaft of the pulley 423i to the lower side and installs a second driven gear 423j at the bottom thereof to connect the second drive gear 423k to the belt. Will rotate.

In the tube inserting portion 420 as described above, the tube 423g is inserted into the outer surface of the raw material, and then the end of the unmolded raw material is molded by the second end expanding portion 430. In an embodiment of the present invention, the second end expansion tube 430 has the same configuration as that of the first end expansion tube 410, but the end portion is molded in the same shape, but is not limited thereto. It is possible to change the shape of the forming portion 413b or punch 414 to change the end shape.

According to the pipe automatic molding machine according to the present invention by the above-described configuration and method, it is possible to prevent the deformation of the material during transport in the manufacture of metal pipes having a long length and a thin thickness, and the Molding and assembly of other accessories are also made, which reduces the cycle time, thereby improving productivity and reducing the occurrence of defective products.

Claims (4)

A material feeder for placing the material on a loading table and supplying the material by a transfer arm formed at an upper portion thereof; A marking device for marking a processing part on the surface of the material by contact with an outer surface of the supplied material and a marking roller coated with a marking liquid; A chamfering device for smoothly forming both ends of the material by contacting the rotating brush; The transfer plate is formed with a plurality of fixed plate and the moving plate in parallel to be arranged in a pair of fixed plate and the moving plate to form a continuous sawtooth and moving the material located on the fixed plate to the next space by the shanghaidong of the moving plate An appliance; And a molding machine in which end molding, fastening nut insertion, and tube insertion of the transferred material are sequentially arranged on the outside of the transfer mechanism, to be formed and assembled on an automatic line of a long material such as pipes. Pipe automatic molding machine characterized in that. According to claim 1, The molding machine, By friction with the endless track body which rotates in opposite directions, the material is transported in the center axis direction, and the fastening nut is inserted and moved to the set position, and then the clamping and the punch are advanced to expand and press the end of the material. A first end expansion unit; A tube insertion part for inserting the material whose one end is expanded by the end expansion part is inserted into the outer surface of the material by friction with the press-fit roller body in which the hollow tube is rotated in an infinite orbit through the other end of the material which is not expanded. Wow; And a second end expansion part for expanding the unprocessed end of the material into which the tube is inserted and allowing the fastening nut to be inserted therein. According to claim 1, wherein the material feeder, A pipe automatic molding machine characterized in that the material is picked up by a magnetic material among a plurality of materials placed on the mounting table and moved upward. According to claim 1, wherein the chamfering machine, A pipe automatic molding machine characterized in that one side of the material is chamfered and then moved to chamfer the other end.