JPH04189532A - Machine for drawing vibration-damping rubber - Google Patents

Abstract

PURPOSE:To improve productivity by simplifying the whole of a device and eliminating necessity of a horizontal movement of the device, by a method wherein vibration damping rubber between an inner and outer cylinders of which the rubber is interposed is set up within a cylindrical space surrounded by dies and the device is constituted of a chuck pressing the vibration damping rubber on the upper part and a pushing up member moving the die toward the center by pushing the die or a ring body upward from the lower part. CONSTITUTION:A cylinder rod 16 of pushing-up member is raised by a chuck 14 as vibration damping rubber is pressed against the lower part. When the cylinder rod 16 is raised, dies 4 each are raised by being guided by a guide member 6. In this case, since the diameter of the inner circumference of a ring body 5 is so formed that it becomes larger gradually extending from the upper end to the lower end, the dies 4 raising by being guided by the guide member 6 are approached to the center to each other. Since vibration damping rubber also is raised according as the cylinder rod 16 is raised, a chuck 14 is fled upward by contracting an elastic member 15. The vibration damping rubber is drawn under a state where the chucks 4 are contacted with each other.

Description

[Detailed Description of the Invention] [Industrial Application Field-1] The purpose of this invention is to provide preliminary compression to vibration-proof rubber such as a suspension bushing in which rubber is interposed between a metal inner cylinder and an outer cylinder. This relates to a drawing machine for tightening an outer cylinder from the outside to the inside.

[Conventional technology]

As shown in FIG. 4, in a conventional drawing machine, a die pedestal 101 is provided on a support 100.
01 on which a plurality of dice 102 are placed on the circumference, and a die holder 101 is located at the center of the inner circumference of the plurality of dice 102.
A workpiece pedestal 103 is provided above, and a spring 104 is provided between the workpiece pedestal 103 and the die 102. The diameter of the outer periphery of the die 102 is formed so that the diameter gradually increases from the upper end to the lower end. A ring body 105 having an inner peripheral surface shape corresponding to the outer peripheral surface shape of this die 102
is placed over the die 102. The ring body 105 and the die pedestal 101 are connected by a spring 106. In the cylindrical space surrounded by the die 102, a vibration-proof rubber with a rubber 13 interposed between the inner cylinder 11 and the outer cylinder 12 is installed.
1 is set by bringing the lower end of the workpiece into contact with the workpiece pedestal 103. The upper end of the outer cylinder 12 of this vibration-proof rubber is formed into a flange portion 12A that is bent outward. A rubber presser piece 109 and a hard presser piece 200 are provided on the lower surface of the plate 108 of the cylinder rod 107.
3, and the presser piece 200 presses the ring body 105. When the cylinder rod 107 is lowered, the ring body 105
is pushed down, and as the ring body 105 descends, the plurality of dies 102 move to the center and tighten the outer cylinder 12 from the outside to the inside.

[Problem to be solved]

In conventional drawing machines, setting and removing the anti-vibration rubber, holding the anti-vibration rubber, and suppressing it with a cylinder rod were all done from above. Therefore, when setting or removing the anti-vibration rubber, the stroke of the cylinder rod must be longer than the height of the anti-vibration rubber, or when the stroke of the cylinder rod is shortened, the support base 100 must be moved horizontally. I had to move it.

For this reason, the entire device including the drawing machine has become complicated, and productivity has been poor.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a vibration-proof rubber drawing machine that simplifies the entire device, eliminates the need for horizontal movement, and improves productivity.

[Means to solve the problem]

In order to achieve the above-mentioned object, this invention forms a die which is divided into a plurality of parts and arranged on the circumference so that the diameter of the outer periphery thereof gradually increases or decreases from the upper end to the lower end. , in a vibration-proof rubber drawing machine that covers this die with a ring body having an inner peripheral surface shape corresponding to the outer peripheral surface shape of the die, and moves the die or ring body in the axial direction to move the die around the die. A vibration isolator with rubber interposed between the inner cylinder and the outer cylinder is set in a cylindrical space surrounded by a chuck that holds the vibration isolator from above, and a die or ring body is pushed upward from below. and a push-up member that moves the die toward the center.

[Effect]

In this invention, for example, when drawing a vibration isolating rubber having an outer cylinder having a flange, a stepped portion on which the flange is placed is formed on the die, and the flange is hooked onto the stepped portion. By eliminating the need for a conventional workpiece pedestal and pushing up the die from below using a push-up member, the diameter of the die is reduced along the tapered surface that forms the inner peripheral surface of the ring body, and the outer cylinder of the anti-vibration rubber is moved outward. It is tightened from the front inward.

At this time, the anti-vibration rubber is also raised together with the die, but by taking measures such as providing an elastic member on the chuck that holds down the anti-vibration rubber, the chuck can also move upward while holding down the anti-vibration rubber as the anti-vibration rubber rises. You can escape. After the drawing process is completed, lower the pressing member to lower the die,
The squeezed anti-vibration rubber is taken out with a chuck and transferred to the next process. During these operations, there is no need to horizontally move the entire device except the chuck. Further, the stroke of the push-up member may be long enough to ensure the amount of movement of the die necessary for drawing.

〔Example〕

Preferred embodiments of the present invention will be described below with reference to the drawings.

In the embodiment shown in FIG. 1, a die pedestal 3 is supported by a support 1.2, and a plurality of divided dice 4 are placed on the die pedestal 3, arranged circumferentially. . A stepped portion 4A is formed at the upper end portion of the inner peripheral surface of the plurality of dies 4. The diameter of the outer periphery of the plurality of dies 4 is formed so that the diameter gradually increases from the upper end to the lower end. These dies 4 are covered with a ring body 5 having an inner peripheral surface shape corresponding to the outer peripheral surface shape of the dice 4. Guide members 6 are fixed to this ring body 5 in correspondence with the number of dies 4.
The dice 4 move up and down along these guide members 6. Above the ring body 5, an upper plate 8 with an upper mold 7 is provided between the columns 1.2. The center of the upper die 7 is determined by a pin 9. The upper mold 7 is in contact with the ring body 5, and the ring body 5 is sandwiched between the die holder 3 and the ring body 5. The upper mold 7 is provided with a spring 10 that presses the die 4 downward. The upper mold 7 and the upper plate 8 each have holes 7A.
and 8A are formed. The vibration-proof rubber is set in a space surrounded by the dice 4 divided into a plurality of parts, and the collar B12A of the outer cylinder 12 is placed on the stepped portion 4A of the dice 4. In the anti-vibration rubber having such a flange 12A, by placing the flange 12A on the stepped portion 4A, a stand for receiving the anti-vibration rubber (the conventional work holder 103) becomes unnecessary. A chuck 14 for gripping the vibration-proof rubber is movably provided above in order to set and take out the vibration-proof rubber between the dies 4 through holes 7A and 8A formed in the upper die 7 and the upper plate 8. It is. This chuck 14 not only serves to set and take out the vibration-proof rubber between the dies 4, but also to hold down the vibration-proof rubber from above during drawing.

The chuck 14 is provided with a resilient member 15 such as a spring. A hole 3A is also formed in the die holder 3, and a cylinder rod (
A push-up member) 16 can be inserted. When the cylinder rod 16 is raised to raise the die 4, the vibration isolating rubber is also raised, and the chuck 14 is also pushed upward at this time, so the chuck 14 can escape upward by the elastic member 15. ing.

Second! ! FIG. 1 is a plan view of the drawing machine taken from the point taken along the line ■-■ in FIG. In this embodiment, the dice 4 are divided into eight pieces, and the number of guide members 6 and subrings 10 corresponding to the number of dice 4 are provided.

In the embodiment shown in FIGS. 1 and 2, when drawing the anti-vibration rubber, the claw 14A of the chuck 14 is inserted into the inner cylinder 11, and the claw 14A is opened outward to grasp the anti-vibration rubber. Bring the anti-vibration rubber directly above the opened die 4, and from this state, open the hole. Set the anti-vibration rubber between the dice 4 through A and 8A (see the left half of Figure 1).

While the vibration isolating rubber is pressed downward by the chuck 14, the cylinder rod 16, which is a push-up member, is raised.

When the cylinder rod 16 is raised, each die 4 is guided by the guide member 6 and raised. At this time, since the diameter of the inner periphery of the ring body 5 is formed so that the diameter gradually increases from the upper end to the lower end, the dies 4 guided by the guide member 6 and raised move toward the center of each other. cylinder rod 1
As the vibration isolating rubber 6 rises, the vibration isolating rubber also rises, and the chuck 14 escapes upward as the elastic member 15 contracts. While the chucks 4 are in contact with each other, the vibration isolating rubber is drawn (see the left half of FIG. 1).

In another embodiment shown in FIG. 3, the diameter of the outer periphery of the die 4 is formed so that the diameter gradually decreases from the upper end to the lower end, and the shape of the inner periphery of the ring body 5 is also the same as the outer periphery of the die 4. It is shown that it is formed to correspond to the shape and that the ring body 5 is pressed from below to above. In this embodiment, a guard ring groove 17 is formed at a location corresponding to the upper end surface of the ring body 5 of the upper die 7, into which the ring body 5 can escape when it rises. Although the guide member 6 is not shown in this embodiment, the guide member 6 is attached to the ring body 5 as in the previous embodiment.
It may be installed on. In addition, in this embodiment, the collar 112A
In the case of a vibration-proof rubber without a vibration-proof rubber, a member for receiving the vibration-proof rubber may be provided on the die holder 3. In order to make Dice 4 move only horizontally and not vertically,
The upper die 7 and the die holder 3 restrict vertical movement, and are configured to be slidable laterally. Further, as a member for pressing the ring body 5, a ring-shaped member is prepared and configured to push up the lower surface of the ring body 5 from the hole 3B of the die holder 3. A cylinder rod 16 or the like may be provided below such a ring-shaped member. cylinder rod 1
6 and a ring-shaped member constitute a push-up member.

In the embodiment of the present invention, the die 4 is slid in the lateral direction by the guide member 6, but a spring 104 as shown in FIG. 4 is used to move the die 4 after narrowing down. You can also try to make a comeback. When a vibration isolating rubber that does not have the flange 12A is placed on the conventional work holder 103, the vibration isolating rubber does not rise with the rise of the die 4 or the ring body 5, so the chuck 14
There is no need to provide the elastic member 15.

〔effect〕

As explained above, according to the present invention, a vibration isolating rubber in which rubber is interposed between an inner cylinder and an outer cylinder is set in a cylindrical space surrounded by a die, and the vibration isolating rubber is inserted from above. It consists of a chuck that presses down and a push-up member that pushes up the die or ring body from below and moves the die toward the center, so the stroke of the suppressing member can be shortened. There is no need to horizontally move the entire member. In addition, the vibration-proof rubber before drawing can be easily set between the dies using the chuck, and the vibration-proof rubber after drawing can be easily transferred to another location. Therefore, if this drawing machine is used, productivity will also be improved.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a preferred embodiment of the present invention, FIG. 2 is a plan view taken from the line ■-■ in FIG. 1, FIG. 3 is a sectional view showing another embodiment, The figure is a sectional view showing a conventional example. 4...Dice, 5...Ring body, 11...Inner tube, 12...Outer tube, 13...Rubber, 14...Chuck, 16...Cylinder rod (push-up member). Applicant Brideston Elastic Co., Ltd. Agent Patent Attorney Masu 1) Ex-husband Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. The diameter of the outer periphery of a die divided into a plurality of parts and arranged on the circumference is formed so that the diameter gradually increases or decreases from the upper end to the lower end, and In a vibration-proof rubber drawing machine that covers the outer circumferential shape of the die with a ring body having an inner circumferential shape corresponding to the outer circumferential shape of the die, and moves the die or ring body in the axial direction to move the die around the die, the die is surrounded by the die. A vibration-isolating rubber with rubber interposed between the inner cylinder and the outer cylinder is set in a cylindrical space, and a chuck is used to press the vibration-isolating rubber from above during the drawing process, and a die or ring body is pushed upward from below. A vibration-proof rubber drawing machine consisting of a push-up member that moves the die toward the center.