JP2007216233A - Positioning mechanism of progressive press-working apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a positioning mechanism of a progressive press-working apparatus which ensures high accuracy of positioning in the width direction of a belt-like metallic member and excellent workability. <P>SOLUTION: The positioning mechanism 1 of a progressive press-working apparatus by which the belt-like metallic member W before press forming is positioned in the width direction, has a pair of guide pins 2 arranged in the standing-up state on the downstream side of a forming die 16b. The pair of the guide pins 2 are provided so as to be axially rotatable around each standing-up axis 2c and changed into the positioning state where the distance between the pair of the guide pins 2 becomes a first width by being axially rotated and the opening state where the distance becomes a second width which is wider than that of the first width 2e. In the positioning state, the belt-like metallic member W is positioned to the forming die 16 by holding the belt-like metallic member W before forming in the width direction and, in the opening state, the second width is wider than the width of the belt-like metallic member W after press forming. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an alignment mechanism of a progressive press working apparatus that is provided on the downstream side of a forming die of a progressive press working apparatus that progressively presses and presses a belt shaped metal member and aligns the band shaped metal member before press forming in the width direction. .

  Conventionally, the progressive press processing apparatus of patent document 1 is known. The press working apparatus includes a progressive feed device for feeding the belt-shaped metal member sequentially to the forming die of the press working device, an inlet guide mechanism for guiding the belt-shaped member in the width direction on the upstream side of the forming die, and the belt-like member on the downstream side of the forming die. It has the exit guide mechanism which guides to width direction (31 and 36 in FIG. 6 of patent document 1). However, the width of the band-shaped metal member on the downstream side of the forming die is wider than that before forming by press forming. Therefore, the exit guide mechanism that guides the band-shaped metal member after molding cannot accurately align the band-shaped metal member in the width direction.

  Therefore, conventionally, an alignment mechanism 20 of the progressive press machine shown in FIGS. 8 and 9 has also been developed. As shown in FIGS. 8 and 9, the alignment mechanism 20 includes a pair of bases 21 provided on the downstream side of the mold 25, an arm 22 rotatably attached to the base 21, and a guide provided at the tip of the arm 22. It has a pin 23 and a block 24 that is inserted into and removed from the base 21.

The alignment mechanism 20 is variable between an alignment state (see FIG. 8) and a storage state (see FIG. 9). When the storage state is changed to the alignment state, the block 24 is first pulled out from the base 21. Next, the arm 22 is rotated with respect to the base 21, and the guide pin 23 is raised above the arm 22. Similarly, another guide pin 23 is raised. And the strip | belt-shaped metal member W is sent between a pair of guide pins 23, and this aligns a strip | belt-shaped metal member with respect to a shaping | molding die in the width direction. Next, the belt-shaped metal member W is retracted, and the alignment mechanism 20 is brought into the housed state shown in FIG. In this state, the band-shaped metal member W is press-formed while being fed forward. The band-shaped metal member W after press forming is widened in the width direction by press molding, but the band-shaped metal member W can pass above the alignment mechanism 20 because the guide pin 23 is in the housed state.
Japanese Patent Laid-Open No. 2004-230415

However, since the conventional alignment mechanism 20 needs to rotate the arm 22 with respect to the base 21, the arm 22 sufficiently rotates when fine dust adheres between the arm 22 and the base 21. In some cases, the guide pin 23 provided on the arm 22 cannot stand up and tilts. For this reason, the width between the pair of guide pins changes, and the belt-shaped metal member may not be accurately aligned in the width direction. Further, there is a case where dust adheres between the arm 22 and the block 24 and the block 24 cannot be inserted and removed smoothly. Further, since the alignment mechanism is provided in the mold or in the vicinity of the mold, there has been a demand for a configuration that can be operated in a short time and without entering the press machine as much as possible for safety of work.
Then, this invention makes it a subject to provide the position alignment mechanism of the progressive press processing apparatus which the position alignment precision of the width direction of a strip | belt-shaped metal member is high and can be excellent in workability | operativity.

In order to solve the above-mentioned problems, the present invention is an alignment mechanism of a progressive press working apparatus having a configuration as described in each claim.
According to the first aspect of the present invention, the alignment mechanism has a pair of guide pins arranged in a standing state on the downstream side of the mold. The pair of guide pins is provided so as to be rotatable about each upright axis, and is aligned with the first width between the pair of guide pins by rotating the shaft, and the first wider than the first width. It changes to the open state that becomes double width. In the alignment state, the band-shaped metal member before press forming is sandwiched in the width direction so that the band-shaped metal member is aligned with the forming die, and in the open state, the second width is larger than the width of the band-shaped metal member after press forming. It has a wide structure.

Accordingly, the pair of guide pins rotate with the shafts standing up around the upright shafts. Therefore, the pair of guide pins changes between an alignment state and an open state without tilting. As a result, the guide pin is not inclined in the positioning state as before, and the width between the pair of guide pins is not narrowed. Therefore, the band-shaped metal member can be accurately aligned in the width direction.
In addition, the pair of guide pins are not pivoted about the horizontal axis together with the arm as before (see FIGS. 8 and 9), and the alignment state and the opening are achieved by a small operation of rotating about each upright axis. Change to state. Therefore, the alignment mechanism of the present invention can be superior in workability compared with the conventional one. As a result, the working time near the mold is shortened, and the safety of the work is improved.

According to the second aspect of the present invention, each guide pin has an arc surface centered on the upright axis and a notch surface notched closer to the upright axis center side than the arc centered on the upright axis. is doing. And it will be in an alignment state when the circular arc surfaces of each guide pin oppose, and it will be in an open state when notch surfaces oppose.
Therefore, the pair of guide pins is always in an alignment state having the first width in a state where the arc surfaces are opposed to each other. For this reason, the alignment state is not a pin point, but can be formed at any position within a range in which the arc surfaces face each other. As a result, the pair of guide pins can be easily and reliably aligned.

According to the third aspect of the present invention, the alignment mechanism has the drive device that rotates the shaft in synchronization with the pair of guide pins.
Therefore, it is possible to rotate the pair of guide pins synchronously without rotating each guide pin separately. Accordingly, the pair of guide pins can be easily changed between the alignment state and the open state.

A progressive press working apparatus 10 according to an embodiment and an alignment mechanism 1 of the apparatus will be described with reference to FIGS.
As shown in FIG. 1, the progressive press processing apparatus 10 is an apparatus that progressively feeds and press-molds the band-shaped metal member W, and is an apparatus that manufactures vehicle parts such as a reclining gear (ratchet) of a vehicle seat.

  As shown in FIG. 1, the progressive press processing apparatus 10 includes an uncoiler 11, a rivera 12, a looping space 13, a feeder 14, a carry-in mechanism 15, and a press machine 16 from upstream to downstream. The press machine 16 is a mold having an upper mold 16a and a lower mold 16b. An alignment mechanism 17 is provided on the upstream side of the lower mold 16b, and on the downstream side of the press machine 16, An alignment mechanism 1 is provided.

The band-shaped metal member W is attached to the uncoiler 11 in a wound coil material state.
The uncoiler 11 has a plurality of segments 11a as shown in FIG. The plurality of segments 11 a hold the band-shaped metal member W by pushing the inner peripheral surface of the wound band-shaped metal member W outward. The uncoiler 11 discharges the band-shaped metal member W by rotating.

The rivera 12 has a plurality of pairs of rollers 12a that sandwich the band-shaped metal member W in the thickness direction. The plurality of pairs of rollers 12a are arranged alternately up and down, and the rollers 12a rotate to pull the band-shaped metal member W from the uncoiler 11 side and correct the curl of the band-shaped metal member W.
As shown in FIG. 1, the strip-shaped metal member W discharged from the rivera 12 is in a state where a large curve is drawn by the looping space 13, and the curl is sufficiently corrected.
The feeder 14 has at least a pair of rollers 14a that sandwich the band-shaped metal member W in the thickness direction. The roller 14a rotates and sends the band-shaped metal member W from the looping space 13 to the press 16 in order and intermittently.

  The carry-in mechanism 15 is a mechanism that feeds the final end of the band-shaped metal member W toward the press machine 16, and as shown in FIG. 1, a roller conveyor 15a and a pressing member 15b that is arranged on the top of the roller conveyor 15a and moves back and forth. It has. The pressing member 15b moves forward toward the pressing machine 16 and sends the final terminal toward the pressing machine 16 while pressing the final terminal of the band-shaped metal member W sent onto the roller conveyor 15a against the roller conveyor 15a. .

  As shown in FIG. 1, the press machine 16 has a mold having an upper mold 16 a and a lower mold 16 b. The press machine 16 performs press molding by moving the upper mold 16a up and down relative to the lower mold 16b. The upper mold 16a and the lower mold 16b have a plurality of stations, and each station performs press molding. Therefore, a plurality of press molding steps can be performed by one molding die by feeding the band-shaped metal member W in synchronization with the raising and lowering operation of the upper molding die 16a and raising and lowering the upper molding die 16a.

  For example, the station of the mold is a station for punching a pilot hole in the band-shaped metal member W, a station for half-cutting the reclining gear and the projection, a station for punching the outer periphery of the reclining gear, and unnecessary after molding. It is a station that cuts the tip of the band-shaped metal member W.

As shown in FIG. 1, an alignment mechanism 17 is provided on the upstream side of the mold.
The alignment mechanism 17 has a pair of pins 17a, and the pair of pins 17a is formed in a columnar shape. The distance between the pair of pins 17a is almost the same as the width of the band-shaped metal member W. Therefore, the band-shaped metal member W can be aligned in the width direction by passing the band-shaped metal member W between the pair of pins 17a. Therefore, the alignment mechanism 17 always aligns the band-shaped metal member W before press molding in the width direction on the upstream side of the mold.

An alignment mechanism 1 is provided on the downstream side of the mold as shown in FIG.
The alignment mechanism 1 includes a base 3, a pair of guide pins 2, and a driving device 4.
As shown in FIG. 2, the base 3 is attached to the downstream side of the lower mold 16b. For example, it is attached at the upstream position of the most downstream station of the lower mold 16b for cutting the belt-shaped metal member W. The base 3 is formed with an inclined surface 3a inclined downward toward the downstream side and an attachment hole 3b drilled from the inclined surface 3a.

The pair of guide pins 2 are inserted into the mounting holes 3 b of the base 3 as shown in FIGS. Each guide pin 2 has a columnar shape, and can rotate about the mounting hole 3b. The guide pin 2 rotates about an upright axis (standup central axis) 2c of each guide pin 2.
Each guide pin 2 has a circular arc surface 2a and a notch surface 2b as shown in FIGS. The arc surface 2a is an arc surface centered on the upright axis 2c, and the distance from the center of the upright axis 2c is a radial length at any position. The notch surface 2b is formed by cutting away from the arc centered on the upright axis 2c toward the center of the upright axis 2c, for example, in a planar shape (linear shape).

The pair of guide pins 2 are juxtaposed in the width direction of the band-shaped metal member W, and the upper portions of the guide pins 2 protrude above the upper surface of the lower mold 16b as shown in FIG. The pair of guide pins 2 are rotated about the upright shafts 2c so that the arcuate surfaces 2a face each other (see FIG. 6) and the notch surfaces 2b face each other (see FIG. 7). To see).
The distance between the pair of guide pins 2 in the aligned state is a first width 2e that is substantially the same as the width of the band-shaped metal member W before press forming, as shown in FIG. Therefore, the band-shaped metal member W can be aligned in the width direction by passing the band-shaped metal member W before press forming between the pair of guide pins 2.

The width interval between the pair of guide pins 2 in the open state is the second width 2f as shown in FIG. The second width 2f is wider than the first width 2e in the aligned state, and wider than the width of the band-shaped metal member W after press forming. Therefore, the strip-shaped metal member W after press molding can pass between the pair of guide pins 2 in the open state.
As shown in FIGS. 4 and 5, a gear portion 2 d is integrally provided below the pair of guide pins 2, and the gear portion 2 d has teeth that mesh with rack teeth 4 f formed in the drive device 4. is doing.

The drive device 4 is a device for driving the pair of guide pins 2 synchronously, and has a rack body 4a in which rack teeth 4f are formed as shown in FIGS.
The rack body 4a has a plurality of elongated holes 4g through which the screws 5 are inserted, and the rack body 4a is attached to the base 3 so as to be movable in the width direction (width direction of the band-shaped metal member W) by the screws 5. It has been. A pair of rack teeth 4f are formed on the side surface of the rack body 4a, and the gear portion 2d of the guide pin 2 is meshed with the rack teeth 4f.

As shown in FIGS. 4 and 5, positioning portions 4b and 4d for restricting the amount of movement of the rack body 4a and operation portions 4c and 4e held by an operator are provided at both ends of the rack body 4a. Yes.
The positioning portions 4b and 4d protrude upward from the rack body 4a, and abut against the end surface of the base 3 by moving the rack body 4a in the width direction with respect to the base 3, thereby restricting the amount of movement of the rack body 4a. .

As shown in FIGS. 4 and 5, the operation portions 4c and 4e are configured to protrude upward at both ends of the rack body 4a so as to be easily operated.
Therefore, by gripping the operation parts 4c and 4e and sliding the rack body 4a, the pair of guide pins 2 can be rotated in an axis synchronously. As shown in FIG. 3, the pair of guide pins 2 can be opened by sliding the rack body 4a and applying the positioning portion 4b to the base 3. Then, the rack body 4a is slid in the reverse direction and the positioning portion 4d is brought into contact with the base 3, whereby the pair of guide pins 2 can be brought into the positioning state (see FIG. 2).

A method of aligning the band-shaped metal member W in the width direction using the alignment mechanism 1 will be described. The alignment of the band-shaped metal member W in the width direction by the alignment mechanism 1 is an operation performed in preparation before press-forming the band-shaped metal member W. First, the drive device 4 synchronizes the pair of guide pins 2 with the shaft. Rotate to bring the pair of guide pins 2 into alignment (see FIGS. 2 and 6).
Next, as shown in FIG. 1, a new band-shaped metal member W is installed on the uncoiler 11, the tip of the band-shaped metal member W is pulled by the riverer 12, and the curl of the band-shaped metal member W is corrected by the riverer 12. Then, the band-shaped metal member W that has passed through the looping space 13 is sent out to the press machine 16 by the feeder 14.

The band-shaped metal member W fed to the press 16 is aligned in the width direction by passing between the pair of pins 17a of the alignment mechanism 17 on the upstream side of the mold.
On the downstream side of the mold, it passes between the pair of guide pins 2 of the alignment mechanism 1. Since the pair of guide pins 2 is in an aligned state, the band-shaped metal member W is aligned on the downstream side of the forming die by the pair of guide pins 2. Therefore, the band-shaped metal member W is aligned in the width direction at the upstream position and the downstream position of the mold. As a result, the band-shaped metal member W is accurately aligned with respect to the forming die in the width direction.

  After aligning the band-shaped metal member W in the width direction, the band-shaped metal member W is returned by the feeder 14, and the leading end of the band-shaped metal member W is pulled back to the upstream side of the press machine 16. Next, the drive device 4 is operated to rotate the pair of guide pins 2 to open the pair of guide pins 2 (see FIG. 3). The preparatory work is completed by the above work.

  At the time of press molding, the belt-like metal member W is intermittently fed forward toward the press machine 16 by the feeder 14. Then, the band-shaped metal member W is press-formed by the forming die of the press machine 16. The band-shaped metal member W after press forming becomes wider in the width direction by press forming, but the pair of guide pins 2 provided on the downstream side of the forming die are in an open state. Therefore, the band-shaped metal member W after press molding can pass between the pair of guide pins 2.

  The reason why the band-shaped metal member W is positioned in the width direction by the alignment mechanism 1 is to prevent the band-shaped metal member W from being sent out to the mold while being shifted in the width direction during molding. By preventing the shift, it is possible to prevent burrs from being generated in the molded product by press-molding the width limit portion of the band-shaped metal member W. Further, the width of the band-shaped metal member W can be narrowed, and the material cost of the band-shaped metal member W can be reduced.

The embodiment is formed as described above.
That is, the alignment mechanism 1 has a pair of guide pins 2 arranged in a standing state on the downstream side of the mold as shown in FIG. The pair of guide pins 2 is provided so as to be rotatable about the upright shafts 2c. When the shaft is rotated, the pair of guide pins 2 has a first width 2e between the pair of guide pins 2 as shown in FIG. The state changes to an open state where the second width 2f is wider than the first width 2e as shown in FIG. In the aligned state, the band-shaped metal member W before forming is sandwiched in the width direction so that the band-shaped metal member W is aligned with the mold, and in the open state, the second width is the width of the band-shaped metal member W after press forming. It has a wider configuration.

Therefore, as shown in FIGS. 2 and 3, the pair of guide pins 2 rotate about the shaft while standing up around the upright shafts 2c. Therefore, the pair of guide pins 2 changes between an alignment state and an open state without tilting. As a result, the guide pin 2 is not inclined in the positioning state as before, and the width between the pair of guide pins 2 is not narrowed. As a result, the band-shaped metal member W can be accurately aligned in the width direction.
Further, the pair of guide pins 2 is not largely rotated about the horizontal axis together with the arm (22) as before (see FIGS. 8 and 9), but by a small operation of rotating the shaft about each upright axis 2c, It changes to the alignment state and the open state. For this reason, the alignment mechanism 1 of this embodiment can be superior in workability compared to the conventional one. Therefore, the work time near the mold is shortened, and the work safety is improved.

As shown in FIGS. 6 and 7, each guide pin 2 has an arc surface 2a centered on the upright shaft 2c, and a notch surface notched closer to the center of the upright shaft 2c than the arc centered on the upright shaft 2c. 2b. And it will be in an alignment state when the circular arc surfaces 2a of each guide pin 2 oppose, and it will be in an open state when the notch surfaces 2b oppose.
Accordingly, the pair of guide pins 2 is always in an alignment state having the first width 2e in a state where the arc surfaces 2a are opposed to each other. For this reason, the alignment state is not a pin point but can be formed at any position as long as it is within a range where the arc surfaces 2a face each other. As a result, the pair of guide pins 2 can be easily aligned with each other.

Further, the alignment mechanism 1 has a driving device 4 that rotates the shaft in synchronization with a pair of guide pins 2 as shown in FIG.
Therefore, it is possible to rotate the pair of guide pins 2 synchronously without rotating the pair of guide pins 2 separately. Therefore, the pair of guide pins 2 can be easily changed between the alignment state and the open state.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and may be the following form.
(1) That is, the band-shaped metal member according to the above embodiment is set on the uncoiler 11 in a wound coil state. However, it may be a band-shaped metal member that is set in a long unrolled state and is fed forward to a forming die by a feeder.
(2) The alignment mechanism according to the above embodiment has a form in which the base is fixed to the mold. However, the base may be provided so as to be detachable from the mold, and the positioning mechanism may be detachable from the mold as a unit.

It is a front view of a progressive-feed press processing apparatus. It is a perspective view of an alignment mechanism and a lower mold. It is a perspective view of an alignment mechanism and a lower mold. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4. It is a top view of a guide pin and a strip-shaped metal member in an alignment state. It is a top view of a guide pin and a strip-shaped metal member in an open state. It is a perspective view of the conventional alignment mechanism and a lower mold. It is a perspective view of the conventional alignment mechanism and a lower mold.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Positioning mechanism 2 ... Guide pin 2a ... Arc surface 2b ... Notch surface 2c ... Standing shaft 2e ... First width 2f ... Second width 3 ... Base 4 ... Drive device 4a ... Rack body 4f ... Rack tooth 10 ... Press working device 11 ... Uncoiler 12 ... River 13 ... Looping space 14 ... Feeder 15 ...・ Transport mechanism 16 ... Press machine 16a ... Upper mold (mold)
16b ... Lower mold (mold)
17 ... Positioning mechanism W ... Strip metal member

Claims (3)

An alignment mechanism of a progressive press working apparatus, which is provided downstream of a forming die of a progressive press processing apparatus that sequentially feeds and press-forms a strip metal member, aligns the strip metal member before press forming in the width direction,
A pair of guide pins disposed in a standing state on the downstream side of the mold,
The pair of guide pins are provided so as to be axially rotatable about each upright axis, and an alignment state in which the pair of guide pins has a first width by rotating the shaft is more than the first width. It changes to an open state that becomes a wide second width,
In the alignment state, the band-shaped metal member before press molding is sandwiched in the width direction so that the band-shaped metal member is aligned with the molding die, and in the open state, the second width is the same as that after the press molding. An alignment mechanism for a progressive press working apparatus, characterized in that the structure is wider than the width of the band-shaped metal member. An alignment mechanism for a progressive press machine according to claim 1,
Each guide pin has an arc surface centered on the upright axis, and a notch surface notched closer to the center of the upright axis than the arc centered on the upright axis, and the arc surfaces of each guide pin are An alignment mechanism for a progressive press working apparatus, wherein the alignment mechanism is brought into an alignment state by facing each other, and the cut-out surfaces are brought into an open state by facing each other. An alignment mechanism for a progressive press machine according to claim 1 or 2,
An alignment mechanism for a progressive press machine, comprising: a drive device that rotates a shaft in synchronization with a pair of guide pins.

Images