JPH06185Y2 - Crossbar structure of transfer press machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to the structure of a crossbar used in a transfer press machine.

(Prior Art) Generally, as a press machine, a plurality of metal molds are arranged in a serial manner, and a predetermined work is sequentially drawn (narrowed), trimmed (rim cutting), piercing (piercing), bend (bending). There are known transfer press machines that perform a plurality of descending movements such as.

As such a transfer press machine, for example, one described in JP-A-60-174297 is known. In this transfer press machine, as shown in FIG. 5, a plurality of molds 51, ... Are arranged in series, and the molds 51 ,. Possible pair of transport bars 5
3, 53 is provided, and a crossbar 55 having four suction cups 54 as a work gripping device is horizontally mounted between the pair of transfer bars 53, 53, and the work is gripped by the suction cups 54 of the crossbar 55. The work is moved between the molds 51, ....

(Problems to be Solved by the Invention) In the transfer press machine including the above-described transfer bar and crossbar, it is desired that the crossbar be lightweight, rigid, and have little vibration. When the crossbar vibrates in the process, the vibration of the crossbar is transmitted to the suction cup that holds the workpiece, and the suction cup also vibrates.
The press-formed product may fall.

(Means for Solving Problems) In order to solve the above problems, according to the present invention, after forming a reinforced plastic fiber layer formed by alternately polymerizing an epoxy resin and a reinforced plastic fiber on the surface of an aluminum square pipe, It was shaped into a square to form a crossbar.

(Operation) Since the crossbar is formed by forming the reinforced plastic fiber layer on the surface of the square pipe material, it is lightweight and has rigidity, and further, the vibration damping characteristic is improved and the vibration is reduced.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of a crossbar manufacturing apparatus according to the present invention, and FIGS. 2 to 4 are sectional views showing a manufacturing process of the crossbar.

The crossbar manufacturing apparatus 1 is movably mounted on a headstock 3 and a tailstock 4 arranged on the side of the apparatus body 2 in order to rotatably hold an aluminum square pipe 22 as a core material of the crossbar 21. It is equipped with the placed tailstock 5.

A carriage 7 is movably mounted on a carriage bed 6 arranged in parallel with the tailstock 4, and an aluminum square pipe 22 of a crossbar 21 is mounted on the carriage 7.
Reinforced plastic fiber (hereinafter referred to as "FRP fiber")
A resin bath 8 that guides 23) is provided, and a cross feed 10 having a rotating eye 9 that is formed by twisting three FRP fibers 23 and cross winding the pipe material 22 is provided on the front surface of the carriage 7. Further, an epoxy resin coating device 11 for coating an epoxy resin on the surface of the aluminum square pipe 22 of the crossbar 21 is provided.

In order to manufacture the crossbar 2 by the crossbar manufacturing apparatus 1, the headstock 3 and the tailstock 4 hold, for example, a 70-square aluminum square pipe 22 having a plate thickness of 2.5, and as shown in FIG. Aluminum square pipe 22 as shown
Epoxy resin coating device 11 while rotating in the direction of arrow A
The carbon-based or synthetic epoxy resin is spray-coated on the surface by the
As shown in FIG. 3, a FRP fiber 23 (for example, Toho Bethlon vesphite) having a diameter of 0.3 mm is wound by a loading eye 9 by cross winding at an angle of 5 to 45 °,
At the same time, the epoxy resin coating device 1 on the surface of the FRP fiber 23
As shown in FIG. 3, an FRP fiber 23 is laminated on the surface of the aluminum square pipe 22 by about 10 mm to form an FRP fiber layer 25 by spray coating an epoxy resin by means of 1 and alternating polymerization. The FRP fiber may be wound by, for example, dwell winding or circumferential winding in addition to the above-described cross winding.

At this time, the FRP fiber 25 on the surface of the aluminum square pipe 22
3 has a drum shape as shown in FIG. 3, so that the outer shape of the FRP fiber layer 25 is shaped into a rectangular shape by pressing the plate material 26 from the outside of the FRP fiber layer 25 to the left, right, up, and down as shown in FIG. After that, the epoxy resin is dried by infrared rays or the like to solidify the FRP fiber layer 25, and the cross bar 2
Form 2.

In this way, a 90 × 90 square pipe formed by forming the FRP fiber layer 25 on the surface of the aluminum square pipe (this is referred to as “Al + CF
RP pipes) and 90 × 90 square steel pipes, with both ends of the pipes supported, shock is applied to the center of the pipe to cause vibration, and the maximum amplitude G is 1/2.
The time (sec) until G, 1 / 4G, 1 / 10G, that is, the vibration damping characteristic was measured. The results of each measurement in this case are shown in the following table.

(Effect of the Invention) As described above, according to the present invention, an FRP fiber layer formed by alternately polymerizing epoxy resin and FRP fiber is formed on the surface of an aluminum square pipe, and then the crossbar is shaped into a rectangular shape. Since it is formed, it is lightweight and has rigidity, and the vibration damping characteristics are improved, the vibration is reduced, and the work does not drop.

[Brief description of drawings]

FIG. 1 is a perspective view of a crossbar manufacturing apparatus according to the present invention, FIGS. 2 to 4 are sectional views showing a manufacturing process of the crossbar, and FIG. 5 is a plan view showing a transfer press machine. In the drawings, 1 is a crossbar manufacturing apparatus, 21 is a crossbar, 22 is an aluminum square pipe, 23 is an FRP fiber, 24 is an epoxy resin, and 25 is an FRP fiber layer.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Masaaki Kubota 1-10-1 Shin-Sayama, Sayama City, Saitama Prefecture Honda Engineering Co., Ltd. (72) Inventor Kei Kiyama 1-10-1 Shin-Sayama City, Sayama City, Saitama Prefecture Within Da Engineering Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A plurality of dies are arranged in series, a pair of movable transfer bars are provided on both sides of the dies, and a cross bar having a work gripping device is provided between the pair of transfer bars. In a transfer press machine that horizontally moves the work between molds, the crossbar applies epoxy resin to the surface of an aluminum square pipe, and the resin is reinforced plastic fiber in an undried state. And the epoxy resin is applied to the surface of the reinforced plastic fiber to form a reinforced plastic fiber layer obtained by alternately polymerizing the epoxy resin and the reinforced plastic fiber, and then forming into a square shape. The crossbar structure of the transfer press machine.