JPH0742579Y2 - Device to press the disc into the inner diameter of the rim - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to an apparatus for producing an automobile wheel,
In particular, it relates to a device for press-fitting a disc into the inner diameter of a rim.

(Prior Art) The conventional mold device shown in FIG. 1 will be described. Reference numeral 20 is a mold exchanging carriage, which is a pair of upper and lower molds 21 and molds prepared in advance.
Place 22 and move to the front of the press-fitting press 23. Upper mold 21
The lower die 22 and the lower die 22 which are normally set up and down as shown in the figure at the time of replacement are manually or automatically detached from the press-fitting press machine when necessary. When detaching from the press-fitting press, guide 24
Also, the lower die 22 is guided by the guide 25, and the auxiliary equipment 32 reduces the movement resistance when the die is taken in and out. The final position of the die is positioned by the stopper 26. In order to hold the sent die unit on the upper platen 27 and the lower platen 28 in the press,
A plurality of die clampers 29 ... Are provided, and the die mount plate 30 and the die mount plate 31 corresponding to the positions are clamped and held by the die clampers.

(Problems to be solved by the invention) The press-fitting dies 21 and 22 for the rim and the disc have a shape that matches the shape of the workpiece, and the contact parts of the upper and lower dies are round as well as the disc shape. The mold 21 has a structure that easily rotates with respect to the lower mold 22. Therefore, when exchanging the press-fitting dies prepared in advance for dozens of types of workpieces according to the model, they are detached from the press-fitting press machine in the state of being set up and down as shown in the figure. Sex is a guide
The upper mold 21 can be regulated by the guide 24, the guide 25, the stopper 26, etc.
Since there is no such thing as 26 which regulates the directionality, it moves when it is placed on the die exchange cart and moved into the press machine to set it, and the die clamper 29 ... Deviates from the predetermined setting position provided on the upper die. In addition, various inconveniences occur, such as the press-fitting accuracy being defective due to the uncertain clamp, and the upper die falling seriously.

Then, this invention aims at implement | achieving the metal mold | die apparatus which solves the said problem.

(Means for Solving the Problem) That is, the technical means taken by the present invention is a device for press-fitting a disc into the inner diameter of a rim, which is a pair of an upper die and a lower die for pressurizing the rim and the disc. A control rod which has a die and which passes through the center of the disc in the lower die at the time of pressing and has a U-shaped groove at the tip thereof, and the control rod which is inserted into the upper die at the time of pressing, It is characterized in that an insertion hole having a regulation bar that fits into the character groove is provided.

(Operation) In the present invention, when the upper die and the lower die are pressed as a die rotation preventing mechanism, a regulation rod having a U-shaped groove at the tip is inserted into one of the insertion holes. The U-shaped groove is configured so that it fits with the regulation bar, which not only enables full automation of die replacement, but also results in defective work due to defective upper die position during die attachment, The damage to the mold can be eliminated, and the mold structure can be significantly downsized, saving mold storage space.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In FIG. 2, the upper die A is in a raised position and the rim R and the disc D inserted on the lower die B are press-fitted. It is sectional drawing before performing. FIG. 3 is a sectional view showing a state in which the upper mold A is lowered from the state of FIG. 2 and the disc is press-fitted into the rim. FIG. 4 is a cross-sectional view showing a die rotation preventing mechanism for the upper die A and the lower die B during die exchange.

Referring to the upper die A in the above drawings, reference numeral 1
Is an upper die mounting plate, which is clamped and held by a plurality of die clampers attached to the platen of the press. Reference numeral 2 is a disk press-fitting upper die which is fixed to the upper die mounting plate 1 by bolts. Reference numeral 3 denotes a ring-shaped rim inner peripheral edge pressing plate that is fixed to the upper die mounting plate by bolts, and this rim inner peripheral edge pressing plate presses an upper edge portion formed by being bent to the inner periphery of the rim. Four
Is an upper pressure pad that holds the upper edge of the rim, and a bearing that is provided vertically on the rim inner edge holding plate at appropriate intervals.
The upper pressure pad is supported by a rod 15 penetrating 16 and is supported by a spring S inserted so as to surround a guide pin P fixed to the upper die mounting plate 1 so as to be vertically movable.

Next, the lower die B will be described. Reference numeral 5 denotes a lower die mounting plate, which is detachably fixed by a die clamper provided on a lower platen of a pressing machine (not shown). Reference numeral 6 denotes a disk receiving guide fixed to the lower die mounting plate 5 with bolts, and a restriction rod 13 described later is inserted into a through hole 0 ₁ opened on the axis of the disk receiving guide. Also with respect to the axial center line, the through-holes 0 ₂ bored radially, four guide rods 11 for guiding the vertical movement of the receiving disc will be described later, is inserted vertically movably. Reference numeral 7 denotes a rim inner peripheral edge pressing plate which is fixed to the disc receiving guide by bolts. 8
Is a rim receiver that is fixed to the rim inner edge pressing plate with bolts. 9 is a ring-shaped rim received rail, is supported on the rod 12 to move through holes 0 ₃ bored in a direction perpendicular to the peripheral presser plate rim in the vertical direction, moreover rim receiving rail in the rim peripheral pressing plate An urging force that constantly pushes upward is exerted by the provided spring S, and it floats in the vertical direction. A rim side guide plate 17 for guiding the side surface of the rim is fixed to the upper surface of the rim receiving rail.

Reference numeral 10 denotes a disk receiver that is inserted concentrically with the inner diameter of the rim inner peripheral pressing plate and the inner diameter of the rim receiving rail.

Reference numeral 11 is an elevating rod that elevates and lowers the disc receiver, and is pushed up by a hydraulic cylinder (not shown) with a constant force.

Reference numeral 13 is a regulation rod that constitutes a die rotation preventing mechanism, and is inserted on the center line of the disc receiver. The tip of the regulation rod is an insertion hole 0 ₄ provided in the disc press-fitting upper die 2 of the upper die A.
In it becomes Hairikomeru so, in which the regulating bar 14 provided in the insertion hole 0 ₄ configured to fit into the U-shaped groove 18 provided on the regulating rod tip.

The restriction rod 13 extends from the lower mold B to the upper mold A region, but the work (wheel) applied to this mold has a hole of about φ40 called a hub hole that is machined. There is no interference of this part.

Next, the operation of the present invention will be described.

First, when removing the upper and lower molds from the press, the upper platen is lowered and the upper mold is placed on the lower mold without a work as shown in FIG. When the upper die is placed, the weight of the disc receiver 10 and the rim receiving rail 7 is lowered from its raised position, and the regulating rod 13 fixed to the disc receiving guide 6 is inserted into the insertion hole 0 ₄ of the disc press-fitting upper die 2 and fixed. The regulated bar 14 thus entered enters the U-shaped groove 18 of the regulation rod 13 and regulates the rotation of the upper die A. The drive device for taking in and out the mold unit set in this way moves forward and is connected to the lower mold mounting plate 5. After that, the die clamper of the upper die B is opened, the upper platen of the pressing machine is raised, and then the die clamper of the lower die B is opened. After opening the lower mold B,
The mold loading / unloading device retracts and the mold unit is pulled out from the press machine. The drawn-out mold unit is placed on the dolly and is shifted in the direction perpendicular to the loading / unloading direction, and at the same time, the dolly in which the next new mold unit is set moves to the loading / unloading position. From here, we are going to replace the new mold unit set.

The loading / unloading device is connected to a new die unit, and the die unit is moved into the press machine by the advance of the loading / unloading device to clamp the lower die mounting plate 5. After clamping, the access device is opened and retracted. At the same time as the loading / unloading device retracts, the upper platen of the press moves down,
Stop at the position where it contacts the upper mold mounting plate. After the platen stops, the die clamper clamps and holds the upper die A. After clamping the upper mold A, the mold replacement is completed when the upper platen rises. This series of operations is fully automatic.

(Effects of the Invention) As described above, according to the present invention, the lower mold is provided with the restriction rod which passes through the center of the disk at the time of pressing and has a U-shaped groove at the tip thereof, and the upper mold has the restriction rod at the time of pressing. By providing an insertion hole for insertion and a regulation bar that fits into the U-shaped groove inside the insertion hole, it is possible to prevent defective work press-fitting accuracy and damage to the die due to defective upper die position during die attachment. Besides eliminating the problem, the mold structure can be significantly downsized, and the mold storage space can be saved. Further, the die exchange can be performed automatically.

[Brief description of drawings]

FIG. 1 is a schematic view of a conventional press-fitting device. FIG. 2 is a sectional view showing an embodiment of the press-fitting device according to the present invention, showing a state in which the upper die is raised. FIG. 3 is a sectional view showing a state in which the upper die is lowered and the disc is press-fitted. FIG. 4 is a cross-sectional view showing an engaged state of the rotation detent mechanism when the upper die and the lower die are placed when the die is replaced. [Explanation of reference symbols] A: upper mold, B: lower mold, 13: regulating rod, 14:
... regulations bar, 18 ...... U-shaped groove, 0 ₄ ...... insertion hole

Claims (1)

[Scope of utility model registration request] 1. A device for press-fitting a disc into an inner diameter of a rim, comprising a pair of an upper die and a lower die for pressurizing the rim and the disc, and a center of the disc when the lower die is pressed. And a regulation rod having a U-shaped groove at its tip, and an insertion hole having a regulation bar into which the regulation rod is inserted at the time of pressing and fits into the U-shaped groove. A device that presses the disc into the inner diameter of the existing rim.