KR20100128933A - Driving assist system of curvature bender - Google Patents

Abstract

PURPOSE: A driving assist system of a curvature bender is provided to improve moldability by matching a curvature extruding rate to the processing speed of a forming line and to reduce the axial load of upper and lower part curb roll. CONSTITUTION: A driving assist system of a curvature bender comprises a power transmission unit(U1), a power connection unit(U2) and an auxiliary power member(U3). The power transmission unit comprises slide plates(27,29), chain gears(CG1,CG2,CG3,CG4) and a driving gear. The slide plates move according to the rotation of the screw rod on a guider.

Description

Power assist device for curvature forming machine {DRIVING ASSIST SYSTEM OF CURVATURE BENDER}

The present invention relates to a power assist device for a curvature forming machine, and more particularly, in the case of roll forming, the curvature forming speed is transferred to the process speed of the roll forming line by transmitting the driving force of the roll former to the first lower curve roll of the curvature forming machine. The present invention relates to a power assisting device for a curvature molding machine that improves moldability and at the same time reduces the axial load of upper and lower curve rolls.

In general, a roll forming molded article having a constant curvature such as a vehicle bumper beam is molded in a roll forming apparatus, and then formed into a molded article having a predetermined curvature while passing through a curvature forming machine.

As shown in FIG. 1, the roll forming apparatus 1 includes a plurality of roll formers 3, in which a steel sheet panel 5 passes through the roll formers 103, such as a bumper beam. Molded into (7).

In order to supply the steel sheet panel 5 to the roll forming apparatus 1, an uncoiler 11 equipped with a coil 9 and a strip-shaped steel sheet released by the uncoiler 11 are spread out in front of the roll forming apparatus 1. A brake press 15 for forming a hole for various purposes for bumper assembly in a straightener 13 for preparing a strip-shaped steel sheet panel 5 of a flat plate and the strip-shaped steel sheet panel 5 supplied from the straightener 13. ) Is provided.

And behind the roll forming apparatus 1 is provided a curvature forming machine 10 for shaping the curvature of the roll forming molded article 7 having a constant curvature such as a bumper beam of a vehicle.

That is, the curvature forming machine 10 is a plurality of upper and lower curved rolls are installed along the radius of curvature to be molded in the product to pass through the molded product 7 completed roll forming molding to produce a finished product of a certain curvature do.

However, although the conventional curvature forming machine 10 as described above is used as it is while producing the same product in a state in which each upper and lower curve rolls are installed at a predetermined arrangement position, this has the following problems.

First, the curvature forming machine 10 does not have a separate driving force, and the molded product 7 enters the upper and lower curve rolls at the discharge rate that is discharged according to the process speed of the roll forming line, thereby forming curvature. When the process speed of the curvature and the molding speed of the curvature molding machine 10 is not matched, a problem occurs that a slip phenomenon occurs between the buckle (buckling) or the upper and lower curve roll on the molded product 7 to cause product defects have.

Second, in the case of increasing the process speed of the roll forming line, it acts as an axial load on each upper and lower curve roll of the curvature forming machine 10 to shorten the life of the roller or the shaft, thereby reducing the overall process cycle time. There is also a problem.

Therefore, the present invention has been invented to solve the problems as described above, the problem to be achieved by the present invention is configured between the roll forming apparatus and the curvature forming machine to bend the driving force of the last roll former through the gear and chain connection The power assist device for curvature forming machine which transmits to the first lower curve roll of the molding machine to improve the formability according to the process speed of the roll forming line and to reduce the axial load of the upper and lower curve rolls. To provide.

The power assisting device for a curvature molding machine of the present invention for realizing the technical problem as described above is configured between the roll forming apparatus and one side of the curvature molding machine behind it, one of the last roll former of the roll forming apparatus Two slide plates that are slidably movable in accordance with the rotation of the screw rods on the slide guider corresponding to the sides are formed, and respective chain gears for chain driving are formed at both ends of each slide plate and mounted on one end of the drive shaft of the last roll former. A power transmission unit connected to the driving gear and the chain gear of one side to transfer the driving force to the chain gear of the other side; A driven gear set is rotatably formed on one side of the base block of the curvature forming machine in a state of being connected to the drive shaft of the first lower curve roll of the curvature forming machine, and the driven gear set is removed from the chain gear on the other side of the power transmission unit. A power connecting unit connecting the driving force transmitted through the driving shaft of the first lower curve roll; At one side of the base block front of the curvature molding machine, the auxiliary power means is configured to transmit the driving force of the auxiliary motor through the reduction gear set to the drive shaft of the first lower curve roll of the curvature molding machine.

The power transmission unit is fixed to the front of the rear of the base frame of the roll forming apparatus in the process direction, the slide guides are formed on the upper and outer slide grooves along the longitudinal direction, respectively; An inner and an outer slide plate installed to slide along an inner and outer slide groove on the slide guider; The first chain gear and the second chain gear are rotatably installed at both ends on the inner slide plate, respectively, and the first chain gear and the second chain gear connect each sprocket on each rotation shaft by a chain to enable mutual power transfer. The first chain gear includes: a first chain gear set disposed to be engaged with a driving gear mounted on one end of a driving shaft of the last roll former; The third chain gear and the fourth chain gear are rotatably installed at both ends on the outer slide plate, and the third chain gear and the fourth chain gear are connected to each sprocket on each rotation shaft by a chain to enable mutual power transfer. A third chain gear set configured to be engaged with the second chain gear in response to the second chain gear; Arranged and rotatably disposed corresponding to the inner and outer slide plates along both side ends of the slide guider, and screw sockets connected to the outer ends of the inner and outer slide plates are engaged on one side thereof, First and second screw rods each of which a driven pulley is configured; It is installed on both sides of the lower end of the rear end of the slide guider, and each of the rotating shaft is composed of a 1.2 screw motor connected to each driven pulley and a belt on the first and second screw rod by configuring each drive pulley. do.

Preferably, the second chain gear and the third chain gear are made of spur gears having the same number of teeth of the same diameter.

Preferably, the fourth chain gear corresponds to the driven gear set so as to be engaged with the driven gear set of the power connection unit.

The power connection unit is a driven shaft is installed through the shaft housing which is integrally fixed to the front front side of the base block of the curvature forming machine, the first driven gear is installed on the outer end of the driven shaft, and the first driven gear A driven gear set meshed with the second driven gear rotatably installed through the gear bracket and engaged with the chain gear on the other side of the power transmission unit through the second driven gear to receive a thrust force; And a chain connecting set configured by connecting a drive sprocket installed at an inner end of the driven shaft and a driven sprocket installed at a drive shaft of the first lower curve roll with a chain.

The auxiliary power means is an auxiliary motor mounted to the outer end of the gear base configured on one side of the base block front side of the curvature forming machine; A gear housing is formed on the gear base, and a first reduction gear installed at an end of the drive shaft of the first lower curve roll is disposed inside the gear housing, and the first reduction gear is disposed at an end of the drive shaft of the auxiliary motor. It is characterized in that it consists of a reduction gear set configured to be capable of transmitting power by arranging the second reduction gear to be engaged.

It is preferable that the first reduction gear and the second reduction gear consist of spur gears.

The first reduction gear may be larger in diameter than the second reduction gear.

As described above, according to the power assist device for the curvature forming machine according to the present invention, it is configured between the roll forming forming apparatus and the curvature forming machine through a plurality of chain gears for transmitting the driving force of the last roll former through a chain connection By transferring the curvature forming speed to the first lower curve roll of the curvature forming machine, the curvature forming speed can be shaped according to the process speed of the roll forming line, thereby causing buckling or slipping between upper and lower curve rolls on a conventional molded article. It is effective in preventing moldability.

In addition, even if the process speed of the roll forming line is increased, the axial load on each upper and lower curve roll of the curvature forming machine can be minimized to extend the life of the roller or shaft, thereby reducing the overall process cycle time. It works.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail as follows.

2 is a partial plan view of a roll forming apparatus to which a power assisting device for a curvature molding machine according to an embodiment of the present invention is applied, and FIGS. 3 and 4 are power transmission units of a power assisting device for a curvature molding machine according to an embodiment of the present invention. An enlarged plan view and side view.

5 and 6 are enlarged plan views of the power connection unit and the auxiliary power means of the power assisting device for a curvature molding machine according to an embodiment of the present invention, Figure 6 is a power assisting device for a curvature molding machine according to an embodiment of the present invention An enlarged side view of the power connection unit.

However, in describing the configuration of the present invention, the same components as those in the prior art will be described with the same reference numerals.

As shown in FIG. 2, the power assisting apparatus for the curvature molding machine according to the present embodiment is configured between the roll forming apparatus 1 and one side of the curvature molding machine 10 behind it. U1, a power connection unit U2, and auxiliary power means U3.

First, as shown in FIGS. 3 and 4, the power transmission unit U1 is screwed on the slide guider 21 corresponding to one side of the last roll former 3 of the roll forming apparatus 1. Two slide plates 27 and 29 which are slidably moved in accordance with the rotation of the rods 23 and 25 are configured.

In addition, the chain gears CG1, CG2, CG3, and CG4 which drive chains are formed at both ends of each of the slide plates 27 and 29 to be mounted on one end of the driving shaft 33 of the last roll former 3. The gear G and the first chain gear CG1 on one side are connected to each other to transmit a driving force to the fourth chain gear CG4 on the other side.

When explaining the configuration of the power transmission unit (U1) in more detail, the slide guider 21 is fixed to the rear front side of the base frame 35 of the roll forming apparatus 1 in the process direction.

On the upper surface of the slide guider 21, slide grooves 31 are formed parallel to each other in the longitudinal direction inside and outside.

In addition, the inner and outer slide grooves 31 and 29 on the slide guider 21 are provided to slide in and out respectively.

A first chain gear set CGS1 is formed on the inner slide plate 27, and the first chain gear set CGS1 is formed at both ends of the inner slide plate 27, respectively. And the second chain gear CG2 are rotatably installed, and the first chain gear CG1 and the second chain gear CG2 connect each sprocket S on each rotation shaft by a chain C to mutual power. It is configured to be deliverable.

In this case, the first chain gear CG1 may be engaged with the driving gear G mounted at one end of the driving shaft 33 of the last roll former 3.

In addition, a second chain gear set CGS2 is formed on the outer slide plate 29, and the second chain gear set CGS2 is formed at both ends of the outer slide plate 29, respectively, in a third chain gear CG3. And the fourth chain gear (CG4) rotatably installed, and the third chain gear (CG3) and the fourth chain gear (CG4) connect each sprocket (S) on each axis of rotation by a chain (C). It is configured to be deliverable.

In this case, the third chain gear CG3 may be disposed to engage with the second chain gear CG2.

In addition, the first and second screw rods 23 and 25 are disposed to be rotatable to correspond to the inner and outer slide plates 27 and 29 along both side ends of the slide guider 21. The two screw rods 23 and 25 are screw sockets SS1 and SS2 connected to the respective outer ends of the inner and outer slide plates 27 and 29 on one side thereof, and the first and second screw rods 23 and 25 are engaged with each other. At each rear end of the 23 and 25, a driven pulley PP is provided.

In addition, first and second screw motors SM1 and SM2 are installed at both sides of the rear end portion of the slide guider 21, respectively, and the first and second screw motors SM1 and SM2 are driven to respective rotation shafts. Each is configured to be connected to each of the driven pulley (PP) and the belt (V) on the first and second screw rods (23, 25) to drive the first and second screw rods (23, 25) to rotate respectively.

That is, when the first and second screw rods 23 and 25 are rotated by the driving of the first and second screw motors SM1 and SM2, respectively, the screw sockets SS1 and SS2 engaged thereto move, The connected inner and outer slide plates 27 and 29 are operated to slide along each slide groove 31 on the slide guider 21.

Here, the second chain gear (CG2) and the third chain gear (CG3) is preferably made of a spur gear having the same number of teeth of the same diameter.

Meanwhile, as illustrated in FIGS. 5 and 6, the power connection unit U2 is connected to the drive shaft 37 of the first lower curve roll R1 of the curvature molding machine 10 in the state of being connected to the curvature molding machine. A driven gear set 41 is rotatably formed at one side of the base block 39 of (10).

And a driving force transmitted from the fourth chain gear CG4 of the power transmission unit U2 through the driven gear set 41 to the driving shaft 37 of the first lower curve roll R1. .

When describing the configuration of the power connection unit (U2) in detail, the driven gear set 41 is configured on the front front side of the base block 39 of the curvature forming machine 10, the driven gear set 41 A shaft housing 45 is integrally fixed to the front front side of the base block 39, a driven shaft 47 is installed at the shaft housing 45, and a first end is provided at an outer end of the driven shaft 47. The driven gear DG1 is installed.

The first driven gear DG1 is rotatably installed through a gear bracket 49 connected to the base block 39 together with a second driven gear DG2 engaged therewith, and the second driven gear DG2. ) Is meshed with the fourth chain gear DG4 of the power transmission unit U1 to receive the driving force.

In addition, a chain link set 43 is formed between the driven gear set 41 and the drive shaft 37 of the first lower curve roll R1, and the chain link set 43 is the driven shaft 47. Drive sprocket (S1) is provided to the inner end of the first lower curve roll (R1) and the driven sprocket (S2) is installed on the drive shaft 37 is configured by connecting the chain (C).

In addition, as shown in FIG. 5, the base block 39 in front of the curvature forming machine 10 has a reduction gear set (a) on the drive shaft 37 of the first lower curve roll R of the curvature forming machine 10. The auxiliary power means U3 is configured to transmit the driving force of the auxiliary motor 53 through 51.

That is, the auxiliary power means (U3) has a gear base 55 on one side of the base block 39 in front of the curvature forming machine 10, the auxiliary output for outputting the auxiliary power to the outer end of the gear base (55) The motor 53 is mounted.

The reduction gear set 51 is formed on the gear base 55. The reduction gear set 51 has a gear housing 57 installed on the gear base 55, and the gear housing 57. The first reduction gear RG1 and the first reduction gear RG1 provided at the end of the driving shaft 37 of the first lower curve roll R1 and the driving shaft end of the auxiliary motor 53 are formed inside the first reduction gear RG1. The second reduction gear RG2 meshed with the gear is arranged to be capable of transmitting power.

Here, the first reduction gear RG1 and the second reduction gear RG2 are preferably made of spur gears, and the first reduction gear RG1 has a larger diameter than the second reduction gear RG2. The driving force of the auxiliary motor 53 is decelerated to be transmitted to the driving shaft 37 of the first lower curve roll R1.

That is, the auxiliary power means (U3) is the first lower curve roll (R1) by driving the auxiliary motor 53 in the forward and reverse direction when the molded product 7 is caught in the curvature forming (10), or discharge is required By arbitrarily driving the molded article 7 can be discharged in the process direction or the process opposite direction.

Therefore, in order to operate the power assist device for the curvature molding machine having the above-described configuration, and to transmit the marginal driving force of the rearmost roll former 3 to the first lower curve roll R1 of the curvature molding machine 10, FIG. As shown in the drawing, by driving the first screw motor SM1 to rotate the first screw rod 23 in one direction, the first screw socket SS1 engaged thereto is moved forward.

Then, the inner slide plate 27 moves forward with respect to the slide guider 21 so that the first chain gear CG1 meshes with the drive gear G.

Subsequently, as shown in FIG. 8, by driving the second screw motor SM2 to rotate the second screw rod 25 in the other direction, the second screw socket SS2 engaged thereto is moved backward.

Then, the outer slide plate 29 moves backward with respect to the slide guider 21 so that the fourth chain gear CG4 meshes with the second driven gear DG2, and at the same time, the third chain gear CG3 is As shown in FIG. 9, the driving force G, the first chain gear CG1, and the second chain gear are combined with the second chain gear CG2, and the driving force of the rearmost roll former 3 is shown in FIG. 9. (CG2), the third chain gear (CG3), the fourth chain gear (CG4), the second driven gear (DG2), the first driven gear (DG1) in order of the first lower curvature forming machine 10 By transmitting to the drive shaft 37 of R1 in the forward direction, the driving force of the roll forming apparatus 1 is applied to the curvature shaping machine 10.

 Thus, the curvature forming machine 10 can advance the curvature forming speed according to the process speed of the roll forming line, so that the buckling phenomenon and the upper and lower curve rolls that occurred on the previous molded product 7 can be achieved. It is possible to extend the life by reducing the axial load of the upper and lower curved rolls even in the case of improving the moldability by preventing slip phenomenon of the roll forming process and increasing the process speed of the roll forming line.

1 is a schematic side view of a roll forming apparatus to which a general curvature molding machine is applied.

2 is a partial plan view of a roll forming apparatus to which a power assisting device for a curvature molding machine according to an embodiment of the present invention is applied.

3 is an enlarged plan view of a power transmission unit of a power assisting device for a curvature molding machine according to an embodiment of the present invention.

4 is an enlarged side view of a power transmission unit of a power assisting device for a curvature molding machine according to an embodiment of the present invention.

5 is an enlarged plan view of a power connection unit and auxiliary power means of the power assisting device for a curvature molding machine according to an embodiment of the present invention.

6 is an enlarged side view of a power connection unit of a power assisting device for a curvature molding machine according to an embodiment of the present invention.

7 and 8 are a plan view of the operating state of the power assisting device for a curvature molding machine according to an embodiment of the present invention.

9 is a side view showing a power transmission path of the power assisting device for a curvature molding machine according to an embodiment of the present invention.

Claims (8)

Between the roll forming apparatus and one side of the curvature forming machine behind it, Two slide plates that are slidably movable in accordance with the rotation of the screw rods on the slide guider correspond to one side of the last roll former of the roll forming apparatus, and chain drives driven by chains are provided at both ends of each slide plate. A power transmission unit configured to connect a drive gear mounted to one end of the drive shaft of the last roll former and a chain gear of one side to transmit a driving force to the other chain gear; A driven gear set is rotatably formed on one side of the base block of the curvature forming machine in a state of being connected to the drive shaft of the first lower curve roll of the curvature forming machine, and the driven gear set is removed from the chain gear on the other side of the power transmission unit. A power connecting unit connecting the driving force transmitted through the driving shaft of the first lower curve roll; And an auxiliary power means configured to transmit the driving force of the auxiliary motor to the drive shaft of the first lower curve roll of the curvature forming machine through the reduction gear set on one side of the base block front side of the curvature forming machine. In claim 1, The power transmission unit A slide guider which is fixedly installed along the process direction on the front rear side of the base frame of the roll forming apparatus and has upper and lower slide grooves formed in inner and outer sides on its upper surface; An inner and an outer slide plate installed to slide along an inner and outer slide groove on the slide guider; The first chain gear and the second chain gear are rotatably installed at both ends on the inner slide plate, respectively, and the first chain gear and the second chain gear connect each sprocket on each rotation shaft by a chain to enable mutual power transfer. The first chain gear includes: a first chain gear set disposed to be engaged with a driving gear mounted on one end of a driving shaft of the last roll former; The third chain gear and the fourth chain gear are rotatably installed at both ends on the outer slide plate, and the third chain gear and the fourth chain gear are connected to each sprocket on each rotation shaft by a chain to enable mutual power transfer. A third chain gear set configured to be engaged with the second chain gear in response to the second chain gear; Arranged and rotatably disposed corresponding to the inner and outer slide plates along both side ends of the slide guider, and screw sockets connected to the outer ends of the inner and outer slide plates are engaged on one side thereof, First and second screw rods each of which a driven pulley is configured; And a 1.2 screw motor which is installed on both sides of the rear end of the slide guider, respectively, and has a driving pulley configured at each rotation shaft to be connected to each driven pulley and a belt on the first and second screw rods. Power assist device for curvature forming machine. In claim 2, The second chain gear and the third chain gear Power auxiliary device for a curvature molding machine, characterized in that consisting of a spur gear having the same number of teeth of the same diameter. In claim 2, The fourth chain gear And a drive gear set corresponding to the driven gear set so as to be engaged with the driven gear set of the power connection unit. In claim 1, The power connection unit A first driven gear is installed through a shaft housing fixed integrally to the front front side of the base block of the curvature former, and a second driven member engaged with the first driven gear provided at an outer end of the driven shaft. A driven gear set rotatably installed through a gear bracket and engaged with a chain gear on the other side of the power transmission unit through the second driven gear to receive a driving force; And a chain connecting set formed by connecting a drive sprocket installed at an inner end of the driven shaft and a driven sprocket installed at a drive shaft of the first lower curve roll with a chain. In claim 1, The auxiliary power means An auxiliary motor mounted to an outer end of a gear base configured at one front side of the base block of the curvature molding machine; A gear housing is formed on the gear base, and a first reduction gear installed at an end of the drive shaft of the first lower curve roll is disposed inside the gear housing, and the first reduction gear is disposed at an end of the drive shaft of the auxiliary motor. A power assisting device for a curvature forming machine, characterized in that the gear reduction gear set is configured to be able to transmit power by arranging the second reduction gear to be engaged. In claim 6, The first reduction gear and the second reduction gear Power auxiliary device for curvature forming machine, characterized in that consisting of a spur gear. In claim 6, The first reduction gear is Power assisting device for a curvature molding machine characterized in that the diameter is larger than the second reduction gear.

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