KR102015251B1 - Square pipe extracting apparatus for bending mold - Google Patents

Abstract

The present invention relates to a square pipe extracting device for a bending mold, capable of remarkably improving productivity by improving safety and increasing the speed of work by easily extracting a square pipe from a support die of a bending mold to the outside, wherein the square pipe manufactured as a plate-shaped sheet is bent into the square pipe by the bending mold. The square pipe extracting device for a bending mold comprises: the support die installed in the bottom part of the bending mold and supporting the square pipe as the plate-shaped sheet is inserted into the square pipe finally bent and transformed by the bending mold; a moving rail fixed in the longitudinal direction to the front and the rear of the support die; a slider installed to move in the longitudinal direction on the front and the rear of the moving rail; an actuator moving the slider forward and backward; and a pair of extracting units individually installed to rotate at a fixed angle to be symmetric on both left and right sides of the slider. The pair of extracting units individually are inserted into the support die while rotating and returning at a fixed angle along the forward and backward movements of the slider. The pair of extracting units are selectively and individually in contact with the left and right front ends of the square pipe supported and extract the square pipe while scraping the square pipe to the rear side of the support die.

Description

SQUARE PIPE EXTRACTING APPARATUS FOR BENDING MOLD}

The present invention relates to a bending mold takeout device, and more particularly, a bending that can easily take out a rectangular tube manufactured by bending a plate-like sheet into a rectangular tube by a bending mold to the outside from a support die of a bending mold. It relates to a square tube extraction device of a mold.

Normally, pipes, or pipes, are produced by extrusion or drawing, but may also be produced by bending a sheet of sheet and then welding both ends. Primarily circular pipes are used a lot, but rectangular pipes, that is, square pipes, are also widely used in various industries.

As shown in FIG. 1, among the rectangular tube bodies SP, either one of the longitudinal and the horizontal lengths is an extremely rectangular shape having a relatively long length, and may have an aluminum material having high thermal conductivity and high heat transfer. It is also used as a refrigerant pipe of the heat exchanger by forming a refrigerant passage in the.

As a method of manufacturing the above-described rectangular tube (SP) by plural times, each of the plurality of bending molds (BM) provided separately can be manufactured while passing through each bending mold (BM), and also a plurality of bending The mold BM may be manufactured by continuously and stepwise processing through one progressive mold.

That is, as shown in FIG. 2, the plate-like sheet S is bent a plurality of times to show a process of manufacturing the rectangular tube SP. The rectangular tube SP finally bent as shown in FIGS. 2 and 3. ) Is bent with the support die 10 inserted therein. Although not shown in the drawing, the rectangular pipe body SP is taken out from the support die 10 to the outside, and the final both ends are welded to complete production.

The square tube SP is made of metal and has high electrical conductivity. In particular, as the thickness is thin, the plastic pipe is deformed into the same shape as each corner of the support die 10 during bending of each corner, so that it is hard to be easily taken out by a worker. Is inserted.

Until now, the operator has to take out the left and right shaking the square pipe (SP) inserted into the support die 10 one by one, a dangerous situation continues to occur, and furthermore, there is a problem that productivity is significantly reduced.

An object of the present invention devised to solve the above problems, the work can be easily taken out from the support die of the bending mold to produce a rectangular tube produced by bending the plate-like sheet into a rectangular tube by the bending mold It is to provide a square tube take-out device of the bending mold that can significantly improve the productivity by increasing the safety and speed of the.

In order to achieve the above object, the apparatus for extracting the rectangular tube body of the bending mold according to the present invention is installed in the lower mold of the bending mold, and the sheet-like sheet is inserted into the rectangular tube body that is finally bent and deformed by the bending mold. A support die supporting a rectangular tube, a movable rail fixedly installed along the longitudinal direction of the support die, a slider provided to be movable along the longitudinal direction of the movable rail, an actuator for moving the slider forward and backward, and the slider Each of the left and right sides of the square is rotatably installed at a predetermined angle so as to be symmetrical with each other, each of which is inserted into the support die while being rotated and rotated at a predetermined angle in accordance with the forward and backward movement of the slider, respectively. Selectively contact and scrape off the square tube behind the support die It comprises a pair of taking out portion to take out.

In addition, each of the ejection portions may be coupled to the slider to be rotatable and rotatable at a predetermined angle about a pivot axis, and to protrude toward the support die at the front end of the ejection rod, A scraper which is spaced apart from the support die during rotation and contacts the front end of the rectangular tube body close to the support die during rotational return of the ejection rod, and a rear end of the ejection rod so that the scraper is approached toward the support die. A take-out rod spring elastically supported and rotatably coupled to the slider about the cam shaft, and have one end contacting the inner surface of the take-off rod between the pivot shaft of the take-out rod and the scraper at an angle with respect to the cam shaft; A cam member for rotating the take-out rod while rotating and returning to rotation; It characterized in that it comprises a cam rotating member for contacting the other end of the cam member in accordance with the forward and backward movement of the cam member to rotate and return.

In addition, the cam rotation member, the front cam rotation member is fixed to the front and the rear cam rotation is installed fixed to the front on the cam front and rear movement line connecting the other end of the cam member is moved forward and backward movement state. Each of the members, wherein the rear cam rotating member is in contact with the other end of the cam member while the slider is moved rearward to rotate the cam member so that the scraper is spaced apart from the support die. Rotate the rod, the front cam rotating member is in contact with the other end of the cam member in the state that the slider is moved forward to rotate the cam member to return the scraper toward the support die and the The return rod is rotated so as to contact the front end of the square tube.

In addition, each of the ejection portions is formed to protrude forward at the front end of the scraper, the round protrusion having a round surface on a surface facing the support die, and is installed in front of the front cam rotating member, and the front cam rotation is performed. When the member is in contact with the other end of the cam member and the take-out rod rotates back, the inclined surface is formed to contact the round surface of the round protrusion, and the rotary return guides the round surface of the round protrusion to slide on the inclined surface. It further comprises a guide member.

In addition, each of the extracting portions is elastically supported to be pulled out through the inclined surface of the rotation return guide member so as to protrude toward the round protrusion, and the front cam rotating member contacts the other end of the cam member to extract the extract. When the rod returns to rotation, the rod comes into contact with the round protrusion and enters the inside of the inclined surface. When the extraction rod completes the rotation return, the scraper comes out of the inclined surface when the scraper contacts the front end of the square tube. It characterized in that it further comprises a rotation return pressing member for pressing in the direction of the square tube.

According to the present invention, the bending-shaped rectangular tube extracting device can easily take out a rectangular tube obtained by bending a plate-like sheet into a rectangular tube multiple times from the support die to the outside through a pair of takeout portions, thereby ensuring safety of work. And it has the effect of dramatically increasing productivity by increasing the speed.

In addition, the takeout part is composed of a takeout rod, a scraper, a takeout rod spring, a cam member and a cam rotation member to take out a rectangular tube body in conjunction with a slider moving back and forth of the moving rail according to the operation of the actuator. The return guide member allows the scraper to be smoothly guided to the front end of the rectangular tube when the slider moves forward, and the scraper in contact with the front end of the rectangular tube through the rotation return pressure member does not escape, thereby making the rectangular tube easier to take out. There is.

1 is a perspective view showing the actual rectangular tube used as a refrigerant pipe of the heat exchanger,
2 is a flowchart illustrating a process of manufacturing a rectangular sheet by bending a sheet-like sheet a plurality of times.
3 is a side view illustrating a process of taking out the final bent square tube from the support die in the embodiment of FIG.
Figure 4 is a side view showing an embodiment of a rectangular tube extraction device of the bending mold according to the present invention,
FIG. 5 is a side view illustrating a state in which the rectangular tube body is taken out from the support die by the operation of the takeout unit in the embodiment of FIG.
6 to 8 are plan views of the embodiment of FIG. 4,
9 and 10 are plan views of the embodiment of FIG. 5,
11 to 13 is a plan view of the main part showing the operation of the take-out part during the front movement of the slider in Figures 6 to 8,
14 and 15 are top plan views illustrating an operation process of the extraction unit in the rear movement of the slider in FIGS. 9 and 10.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the bending tube rectangular tube extraction apparatus according to the present invention.

The rectangular tube extracting device of the bending mold according to the present invention, as shown in Figures 4 to 15 with reference to Figures 2 and 3, the support die 100, the moving rail 200, the slider 300, the actuator 400 And a pair of take out parts 500. In addition, each of the ejection portions 500 may include an ejection rod 510, a scraper 520, an ejection rod spring 530, a cam member 540, and a cam rotation member 550, and a round protrusion 560. The rotation return guide member 570 and the rotation return pressing member 580 may be further included.

The support die 100 is installed on the lower mold BML of the bending mold BM as shown in FIGS. 4 to 10 with reference to FIGS. 2 and 3, and the sheet-like sheet S is formed by the bending mold BM. Is inserted into the final bending deformed rectangular tube (SP) to support the rectangular tube (SP). The bending mold BM may be a single mold separately provided for bending the plate-shaped sheet S a plurality of times, and each mold may be a progressive mold provided continuously and stepwise. In any mold structure, the bending mold BM is a mold in which a sheet-like sheet S is individually or continuously bent and the final bending deformation shape is a rectangular tube body SP, and the support die 100 is such a bending. It is attached to the lower mold | type BML of the metal mold | die BM.

The moving rail 200 is fixedly installed along the front and rear longitudinal directions of the support die 100 as shown in FIGS. 4 to 10. In the drawing, it can be seen that the moving rails 200 are installed in a pair of left and right under the support die 100.

The slider 300 is installed to be movable along the front and rear longitudinal directions of the moving rail 200 as shown in FIGS. 4 to 10. The slider 300 is moved back and forth along the moving rail 200 by the actuator 400 to be described later, the extraction unit 500 to be described later is coupled to the slider 300 to move back and forth with the slider 300. While taking out the square tube body SP inserted and supported by the support die 100 to the rear.

The actuator 400 moves the slider 300 back and forth as shown in FIGS. 4 to 10. Although the present invention provides a pneumatic cylinder operating by pneumatic, a linear actuator or the like by electrical operation may be used.

4 to 10 is provided with a pair, as shown in Figures 4 to 10, respectively installed on the left and right sides of the slider 300 to be rotated at a predetermined angle to be symmetrical to each other, each of the slider 300 The rectangular tube body SP inserted and supported by the support die 100 while being rotated and rotated back at a predetermined angle in accordance with the forward and backward movement is taken out while scraping the back of the support die 100.

More specifically, each of the ejection portions 500 may include a ejection rod 510, a scraper 520, an ejection rod spring 530, a cam member 540, and a cam rotation member 550, as shown in FIGS. 6 to 15. It includes.

The takeout rod 510 is rotatably coupled to the slider 300 at a predetermined angle about the pivot shaft 511. That is, the extraction rod 510 swings around the pivot shaft 511. The extraction rod 510 is coupled to the slider 300 to move together when the slider 300 moves forward and backward. The drawing rod 510 has an L-shape in the drawing because the moving rail 200 and the slider 300 are installed below the support die 100, and thus the moving rail 200 and the slider 300. ) May be a simple bar shape if it is installed at a height close to the support die (100).

The scraper 520 is coupled to the front end of the take-out rod 510 to protrude toward the support die 100, and as shown in FIGS. 10 and 15, the support die 100 is rotated when the take-off rod 510 is rotated. 8) and spaced apart from each other, and close to the support die 100 in contact with the front end of the square tube SP as shown in FIGS. 8 and 13. Rotation and return of rotation of the take-off rod 510 is determined by interlocking with the take-out rod spring 530 and the cam member 540 which will be described later, that is, take-out rod spring 530 as shown in FIGS. Contrary to the spring force provided, the direction in which the takeoff rod 510 is rotated by the cam member 540 is the rotation operation of the takeout rod 510, and the takeout rod spring 530 is provided as shown in FIGS. The direction in which the take-out rod 510 rotates by the spring force is the rotation return operation of the take-out rod 510.

The takeout rod spring 530 elastically supports the rear end of the takeout rod 510 such that the scraper 520 is approached toward the support die 100. That is, the spring force provided by the take-out rod spring 530 is a direction in which the scraper 520 coupled to the front end of the take-off rod 510 approaches toward the support die 100 as shown in FIGS. 8 and 13.

The cam member 540 is rotatably coupled to the slider 300 about the camshaft 541 and the takeoff rod 510 between the pivot shaft 511 of the takeout rod 510 and the scraper 520. One end is in contact with the inner surface to rotate the take-out rod 510 while rotating and returning to a predetermined angle about the cam shaft 541. Rotating and returning the cam member 540 is a cam rotating member 550 described later.

The cam rotating member 550 contacts the other end of the cam member 540 according to the forward and backward movement of the slider 300 to rotate and rotate the cam member 540. Specifically, the cam rotation member 550 is a front cam rotation member 551 fixedly installed in front of the cam front and rear movement line connecting the other end of the cam member 540 is moved forward and rearward with each other; Each of the rear cam rotating member 552 is fixed to the rear.

At this time, the rear cam rotating member 552 is in contact with the other end of the cam member 540 in the state in which the slider 300 is moved to the rear as shown in FIGS. As the 540 is rotated, the take-off rod 510 is rotated so that the scraper 520 is spaced apart from the support die 100. Further, the front cam rotating member 551 is shown in FIGS. 6 to 8 and 11 to 13. As shown in the drawing, the scraper 520 rotates and returns the cam member 540 in contact with the other end of the cam member 540 while the slider 300 is moved forward. The take-off rod 510 is rotated back so as to contact the front end of the square tube SP in close proximity to 100.

That is, as shown in FIGS. 9, 10, 14, and 15, when the slider 300 moves to the rear of the moving rail 200 according to the operation of the actuator 400, the rear cam rotation member when the slider 300 moves rearward. 552 is in contact with the other end of the cam member 540 to rotate the cam member 540, the take-out rod spring 530 is compressed while the take-off rod 510 rotates in accordance with the rotation of the cam member 540 The scraper 520 is spaced apart from the support die 100.

On the contrary, as shown in FIGS. 6 to 8 and 11 to 13, when the slider 300 moves forward of the moving rail 200 according to the operation of the actuator 400, the front cam rotation member (for the front movement of the slider 300) 551 is in contact with the other end of the cam member 540 to rotate and return the cam member 540, the take-out rod spring 530 is rotated by the take-out rod 510 in accordance with the rotation return of the cam member 540 It is tensioned, and the scraper 520 contacts the front end of the square tube body SP finally bent by the bending mold BM while being pinned close to the support die 100.

As shown in FIGS. 8, 9, 13, and 14, the rectangular tube body SP whose shear is in contact with the scraper 520 while the slider 300 moves backward is taken out to the rear of the support die 100. As the above-described process is repeated, the rectangular tube body SP is bent by the bending mold BM, and the bent rectangular tube SP is supported by the pair of take-out parts 500 according to the forward and backward movement of the slider 300. It is taken out to the back of the die 100.

Here, as shown in FIGS. 9 and 14, the square tube SP is taken out to the rear of the support die 100 according to the rear movement of the slider 300, and then the take-out rod 510 is illustrated in FIGS. 10 and 15. Rotation of the scraper 520 is not a problem because the cam member 540 is supported in a rotated state. However, as shown in FIGS. 6 to 8 and 11 to 13, the cam member 540 rotates when the take-off rod 510 is rotated and returned to the rotator according to the forward movement of the slider 300. The spring force of the take-out rod spring 530 may be strongly acted in the returned state. At this time, the spring force of the take-out rod spring 530 acts on the rear end of the take-off rod 510, and the take-off rod 510 bounces little by little, so that the scraper 520 is not properly positioned at the front end of the square tube SP. There is room for movement.

In order to prevent the ejection rod 510 from splashing when the ejection rod 510 is rotated by the spring force of the ejection rod spring 530, each of the ejection portions 500 includes a round protrusion 560, a rotation return guide member 570, and The rotation return pressing member 580 may be further included.

That is, as shown in FIGS. 6, 7, 11 and 12, the round protrusion 560 is formed to protrude forward at the front end of the scraper 520, the round surface (on the surface facing the support die 100) 561). In addition, the rotation return guide member 570 is installed in front of the front cam rotation member 551, the front cam rotation member 551 is in contact with the other end of the cam member 540 and the take-out rod 510 ) Is inclined surface 571 is formed so as to contact the round surface 561 of the round protrusion 560, the round surface 561 of the round protrusion 560 slides on the inclined surface 571. Guide it. Through this, even when the spring force of the extraction rod spring 530 acts upon the return of the extraction rod 510, the round surface 561 of the round protrusion 560 smoothly rides on the inclined surface 571 of the rotation return guide member 570. It can be guided to slide.

7, 8, 12, and 13, the rotation return pressing member 580 is penetrated through the inclined surface 571 of the rotation return guide member 570 to protrude toward the round projection 560. When the front cam rotating member 551 is in contact with the other end of the cam member 540 and the takeout rod 510 is rotated back, the inclined surface is in contact with the round protrusion 510. When the scraper 520 contacts the front end of the square tube SP, the draw rod 510 is pulled out of the inclined surface 571 when the take-off rod 510 completes rotational return. The round protrusion 560 is pressed in the direction of the square tube body SP. As a result of the rotational return of the take-out rod 510 is completed, even if the spring force of the take-out rod spring 530 acts strongly, the return return pressing member 580 presses the round protrusion 560 in the direction of the square tube SP. Therefore, the ejection rod 510 does not bounce by the spring force, and the scraper 520 may be firmly maintained in contact with the front end of the square tube SP.

As described above, the bending mold square tube extracting device according to the present invention, through a pair of take-out unit 500 through the square tube (SP) is produced by bending the plate-like sheet (S) a plurality of times bent into a rectangular tube. It can be easily taken out from the support die 100 to increase the safety and quickness of the work has an effect that can significantly improve the productivity.

In addition, the take-out part 500 includes a take-out rod 510, a scraper 520, a take-out rod spring 530, a cam member 540, and a cam rotation member 550 to move in accordance with the operation of the actuator 400. It is a structure that takes out the square tube SP in cooperation with the slider 300 moving forward and backward of the rail 200, and in particular, when the slider 300 moves forward through the round protrusion 560 and the rotation return guide member 570. The scraper 520 is configured to be smoothly guided to the front end of the pipe body SP, while the scraper 520 in contact with the front end of the square pipe body SP through the rotation return pressing member 580 is not separated from the square pipe body SP. There is an effect of making it easier to take out.

The embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical idea of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention, as will be apparent to those skilled in the art.

S: Sheet
SP: Square tube
BM: Bending mold BML: Lower mold
100: support die
200: moving rail
300: slider
400: Actuator
500: outlet
510: extraction rod 511: pivot axis
520: scraper 530: ejection rod spring
540: cam member 541: camshaft
550: cam rotating member
551: front cam rotation member 552: rear cam rotation member
560: round projection 561: round surface
570: rotation return guide member 571: inclined surface
580: rotation return pressing member

Claims (5)

A support die installed in a lower mold of a bending mold, and having a plate-like sheet inserted into a rectangular tube which is finally bent and deformed by the bending mold to support the square tube;
A moving rail fixedly installed along the longitudinal direction of the support die;
A slider provided to be movable along the longitudinal direction of the moving rail;
An actuator for moving the slider back and forth,
The left and right sides of the slider are respectively rotatably installed at a predetermined angle so as to be symmetrical to each other, and each of the left and right shears of the rectangular tube body inserted and supported by the support die while being rotated and rotated back at a predetermined angle according to the forward and backward movement of the slider. And a pair of takeout portions for selectively contacting each of the rectangular tube bodies by scraping the rectangular tube body to the rear of the support die.
The method of claim 1,
Each of the outlets,
An ejection rod coupled to the slider to be rotatable and rotationally returnable at a predetermined angle about a pivot axis;
Coupled to protrude toward the support die at the front end of the take-out rod, spaced apart from the support die when the take-out rod rotates, and close to the support die at the return of the take-out rod to contact the front end of the rectangular tube body With scraper to do,
An ejection rod spring for elastically supporting a rear end of the ejection rod such that the scraper is approached toward the support die;
The take-off rod is rotatably coupled to the slider about a cam shaft, and has one end contacting an inner surface of the take-out rod between the pivot shaft of the take-out rod and the scraper to rotate and return to a predetermined angle about the cam shaft. Cam member for rotating the,
And a cam rotating member for contacting the other end of the cam member to rotate and return the cam member in response to the front and rear movement of the slider.
The method of claim 2,
The cam rotation member,
And a front cam rotating member fixedly installed at the front and a rear cam rotating member fixedly at the rear of the cam front and rear movement lines connecting the other end of the cam member to the front moved state and the rear moved state, respectively.
The rear cam rotation member,
Rotating the takeout rod so that the scraper is spaced apart from the support die as the cam member rotates in contact with the other end of the cam member while the slider is moved backwards.
The front cam rotation member,
As the slider is moved forward to contact the other end of the cam member to rotate the cam member, the take-off rod is rotated so that the scraper comes close to the support die and contacts the front end of the square tube. Square tube take-out device of the bending mold, characterized in that for returning.
The method of claim 3,
Each of the outlets,
A round protrusion protruding forward at the front end of the scraper and having a round surface on a surface facing the support die;
Is installed in front of the front cam rotation member, the front cam rotation member is in contact with the other end of the cam member when the take-off rod is rotated return is formed inclined surface to contact the round surface of the round projection, the round And a rotating return guide member for guiding the rounded surface of the protrusion to slide on the inclined surface.
The method of claim 4, wherein
Each of the outlets,
The round when the pull-out rod rotates and is resiliently supported through the inclined surface of the rotation return guide member to protrude toward the round projection, and the front cam rotation member contacts the other end of the cam member. When the scraper is in contact with the front end of the square tube, the scraping rod is pulled out of the inclined surface to press the round protrusion toward the square tube in the direction of the square tube in contact with the projection. Square tube extracting device of the bending mold, characterized in that it further comprises a rotation return pressing member.

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