JPH0337790Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improved caulking device. especially,
This invention relates to a crimping device that can automatically crimp parts with complicated shapes.

(Prior Art) An example of a conventional crimping device is shown in FIG. In FIG. 1, the crimping device b has a substantially cylindrical shape.
The caulking sliding table a with interpolated and the caulking sliding table a
A two-split die c that can be opened and closed when placed on the
A sleeve d attached to the lower side of a press mechanism (not shown) and a caulking jig e inserted into the sleeve d
A device is known which is composed of and operates as follows.

Insert the engine mount caulking item in the center and close the 20% die c.

The closed halved die c is set on the caulking sliding table a. The inner diameter of the annular protrusion a′ formed on the outer edge of the upper end of this caulking sliding table a is formed to have approximately the same diameter as the outer diameter of the two-split die c in the closed state. It is surrounded by protrusion a′ and is prevented from expanding.

After moving the caulking slide table a directly below the press mechanism, it is caulked by the press.

After crimping, the crimping slide table a is pulled out from directly below the press mechanism.

Lift up the crimped product with the 2-split die c from the swiveling sliding table a, divide the 2-split die c with a lever, and take out the swaged product.

(Problem to be solved by the invention) Many of the processes in the conventional device for crimping products using the above steps are done manually, which requires time and effort, as well as the skill of the worker. In addition to this, in order to achieve uniform caulking on the circumference, it was necessary to bring the two split dies c into close contact with each other at the joint surfaces, and for this reason, it was necessary to use a lever when dividing as described above. That is, in order to swam the crimped product uniformly on the circumference, the inner peripheral surface of the two-split die c is formed into a perfect circle, and as shown in FIG. 2, the inner periphery end c' of each half , c′ are formed approximately parallel to each other, so once the halves are brought into close contact with each other with the caulked product in between, the two halves c
Considerable force had to be applied to split it. Furthermore, since it is not possible to tighten the outer peripheral side of the caulking portion of the split die, this portion expands outward, making it impossible to caulk the caulking portion with high precision. Furthermore, if the halving die is only set on the crimping slide, it becomes difficult to position the crimping member due to the relationship between the halving die and the positioning member disposed inside the crimping slide. Therefore, the positioning and arrangement of the caulking member is insufficient, making it difficult to perform accurate caulking.

(Means for Solving the Problems) In view of the above points, the crimping device of the present invention is configured to automatically open and close the halved die by a driving means such as a cylinder, and to control the opening and closing. Eliminate the annular protrusion to make it smooth,
Instead, the sleeve serves to prevent the halved die from expanding during the crimping operation. That is, the crimping device of the present invention is a crimping device that crimps and joins one crimping member and the other crimping member together using a press, and has a guide for positioning one crimping member, a movable table disposed on a press table, and a movable table that moves to the movable table. A pair of halved dies that are freely supported, formed into a semi-shaped body, and capable of reciprocating movement by being pressed by a driving means, each having a tapered surface with a tip converging at one end of the outer circumferential surface, and facing the tapered surface. a pressing member having a tapered surface that fits together and is pressed by a press; the pressing member has a pressing protrusion for pressing and caulking the other caulking member; and the taper of the halved die facing the pressing protrusion It is characterized by having an inner step portion with a surface for crimping and guiding the crimping portion of the other crimping member inwardly in the plane. Then, operations such as closing and dividing the two-split die are automated using a cylinder or the like, and the expansion of the two-split die during the crimping operation is controlled by the pressing force of the driving means that presses the movable table side and the inner stage. It is designed to prevent the tightening force from the tapered surface of the pressing member on the outer periphery of the part by the tightening force from both sides, and is intended to improve work efficiency while maintaining the product accuracy of the crimped product. be.

(Example) An example of the present invention will be described below with reference to the drawings. In FIG. 3, reference numeral 1 denotes a bottomed cylindrical moving platform into which a substantially annular caulking fitting 2 is inserted, and a sleeve 3 attached to the lower side of a press mechanism (not shown) and an inner portion of the sleeve 3. It is configured to be able to freely move forward and backward in the figure from directly below the inserted caulking jig 4. Reference numeral 5 designates a mounting base connected via a rod 6 to a driving means such as a cylinder (not shown), and a half of a halving die 7 is fixed to the upper side of the inner circumferential end. The driving means, the rod 6, the mounting base 5, and the tightening elements each consisting of a half of the split die 7 are arranged in pairs on the left and right in the figure. The left and right tightening elements do not have their weights applied to the movable plate 1, and are supported independently by, for example, having cylinders placed on a base (not shown). An annular tapered surface 8 that slopes upward from the outer diameter side toward the inner diameter side is formed on the outer circumferential upper edge of the two-split die 7, and an annular tapered surface 8 is formed on the outer circumferential lower edge of the sleeve 3 with respect to the tapered surface 8. The tapered surface 10 of the sleeve protrusion 9 thus fitted is now fitted. The latter tapered surface 10 is formed on the lower inner circumferential edge of the annular sleeve protrusion 9 so as to correspond to the tapered surface 8 of the two-split die 7. 11 and 12 are the inner stage of the halving die 7 and the pressing protrusion of the crimping jig 4 for directly crimping the crimped product; 13 is a coil spring;
14 is a guide pin using a part of the engine mount.

(Function) The crimping device configured as described above crims a crimped product according to the following procedure.

An example of this caulked product is an engine mount, in which a lower case and a guide pin 14 are integrally formed on the lower side in the figure with a vibration isolating rubber part interposed therebetween. or,
This upper side is an upper case that is crimped onto the upper end of the lower case.

First, place the crimped product outside the press using the crimping tool 2.
and move the moving table 1 into the press.

Next, the split die 7 is moved by a driving means such as a cylinder, and the halves are brought into close contact with each other with the caulked product sandwiched therebetween.

The press mechanism is operated to lower the sleeve 3 and crimping jig 4 to start crimping. The edge of the upper case of the crimped product that is pressed from above by the pressing protrusion 12 of the crimping jig 4 gradually deforms as the pressing progresses, and at this time, it tries to expand in the outer radial direction and causes the halving die 7 to However, just as the sleeve 3 is about to finish descending, the two tapered surfaces 8 and 10 fit into each other and push the halved die 7 back toward the inner diameter, ensuring that the left and right halves of the die 7 are in close contact with each other. The riveting work can be completed with

After crimping, the crimping element such as the sleeve 3 is pulled up, the driving means such as the cylinder is moved in the opposite direction, the halved die 7 is divided into left and right parts, and the movable table 1 is pulled out from under the press to take out the product.

Therefore, according to the above-mentioned crimping device, even if the product is to be crimped in a complicated manner such as a guide pin, the crimping product is installed in the device before and after the crimping work, and only the work of taking out the crimped product from the device is done by hand. If this is done, the entire intermediate crimping process can be automated.

The combination of the sleeve 3 and the caulking jig 4 is called a pressing member, and these two members may be integrated or separate.

(Effects of the invention) As mentioned above, (1) the crimping device of the present invention simply positions and arranges the crimping member on the movable table using a guide by opening and closing the two-split die using a driving means. It becomes possible to automate the process from loading to unloading of caulking members.

(2) Furthermore, the 2-split die is tightened to a predetermined diameter by the tapered surface of the pressing member from the outside of the inner stage part to be crimped, and the other end is tightened by the pressing means, so the entire 2-split die is tightened. This prevents the expansion of the crimping member, the dimensional crimping accuracy of the crimping member is always constant, and no defective products are produced.

(3) Furthermore, even if the caulking member in the practical example of the present invention has a complicated shape, it is possible to caulk by providing a guide (in this embodiment, a hole into which the guide pin 14 is fitted) on the movable table. position the parts,
A driving means positions the halved die around this point. Since the tapered surface of the pressing member fits into the tapered surface of the split die and is tightened, the positioning of the caulking member is easy, and dimensional defects will not occur in the caulking member.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a conventional crimping device, FIG. 2 is a plan view of a split die, and FIG. 3 is a half-cut sectional view showing a crimping device according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Moving table, 2...Crimping installation tool, 3...Sleeve, 4...Crimping jig, 5...Mounting base, 6...
...Rod, 7...Two-split die, 8, 10...Tapered surface, 9...Sleeve protrusion.

Claims (1)

[Scope of utility model registration request] A crimping device for crimping and joining one crimping member and the other crimping member together by pressing, the crimping device having a guide for positioning the crimping member on the one side, and a movable table 1 disposed on a press table, movably supported on the movable table 1. A two-split die 7 having a tapered surface 8 whose tip constricts at one end of a pair of outer circumferential surfaces that is formed into a semi-shaped body and capable of reciprocating movement by being pressed by a driving means, and facing the tapered surface 8. Pressing members 3 and 4 are provided which have tapered surfaces 10 that fit together and are pressed by a press. A crimping device having an inner stepped part with a surface for crimping and guiding the crimping part of the other crimping member, inside the tapered surface 8 of the two-split die 7 on the side facing the pressing protrusion 12.