JPH0224168B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a crimping device, and more specifically, a crimping device that crimps a plurality of members to be joined that are fitted onto a cylindrical member having a flange at one end. This invention relates to a crimping device that bends the other end edge in the outer circumferential direction and fastens it.

Conventional technology Conventionally, for example, a tsuba 1a is attached at one end as shown in FIG.
A plurality of members 2, 3, and 4 to be joined are fitted onto a cylindrical member 1 provided with When this is done, a crimping device as shown in FIGS. 5 and 6 is used. This crimping device has a roller shaft 7 attached to the tip of a holder 6 fixed to one end of the main shaft 5, which is perpendicular to the main shaft 5 and has both ends protruding.
A cylindrical member is formed by fixing the crimping rollers 8, 8 through the roller shaft 7, and rotatably attaches the crimping rollers 8, 8 having curved arcs on the outer circumferential surface to both ends of the roller shaft 7. By pressing the other end edge 1b of the cylindrical member 1, the crimping rollers 8, 8 rotate around the other end edge 1b of the cylindrical member 1 several times, during which time the other end edge 1b of the cylindrical member 1 is pressed against the other end edge 1b of the cylindrical member 1, as shown in FIG. A plurality of members 2, 3, and 4 are bent as shown by the dotted chain line and fitted onto the cylindrical member 1, and are fastened with the collar 1a.

Problems to be Solved by the Invention Incidentally, in the conventional crimping device, as shown in FIG. Since caulking can be started at the same time, there is a problem that the other end edge 1b of the cylindrical member 1 is peeled off due to the difference in circumferential speed at these two points, and the other end 1b is not bent into the designed shape. It was hot.

Means for Solving the Problems This invention has been proposed in view of the above problems, and the technical means for solving the above problems is to place the holder at three equal positions on the circumference of the holder parallel to the axial direction of the holder. In addition, a roller shaft is provided with the tip end protruding from the holder, and a crimping roller having a curved arc on its outer peripheral surface is rotatably attached to the tip of each roller shaft, and the crimping roller and the holder are connected to each other. In between, a large thrust bearing is placed on the outer circumference of each roller shaft to support the large thrust load applied to the outside of each crimping roller, and a large thrust bearing is placed on the inner periphery of each roller shaft to support the large thrust load applied to the outside of each crimping roller. A small thrust bearing is interposed to support the small thrust load applied to the bearing.

Effect According to the above technical means, each crimping roller can contact the other end edge of the cylindrical member at one point to perform crimping, thereby solving the above problem. Moreover, a large thrust load is applied to the outside of each crimping roller, and a small thrust load is applied to the inside thereof, and the thrust loads applied to the inside and outside of the crimping roller are different. Therefore,
In response to this, by supporting large thrust loads with large thrust bearings and supporting small thrust loads with small thrust bearings, we have rationally created thrust bearings that support thrust loads in an optimal state depending on their magnitude. Can be placed.

Embodiment FIGS. 1 to 3 are drawings showing an embodiment of a crimping roller unit applied to a crimping device according to the present invention. In the figure, a rear holder 11 is fixed to the tip of the main shaft 12 of the main body of the crimping device, and a front holder 16 is detachably attached thereto via a mounting pin 13, a spring 14, and a set bolt 15. 17 is the front holder 16
A crimping roller 18 is a roller shaft disposed parallel to the axial direction of the front holder 16 at three equal positions on the circumference of the front holder 16 with its tip protruding, and has a curved arc 18a on its outer peripheral surface at its tip. is rotatably mounted via a needle bearing (not shown).
Reference numeral 19 denotes a large thrust bearing that is fitted onto the front of the front holder 16 and is interposed between the front holder 16 and each crimping roller 18 via the cover member 20, and is attached to each crimping roller on the outer peripheral side of each roller shaft 17. 18 thrust loads are supported through the cover member 20. 21 is front holder 1
The pin is rotatably inserted and supported in the center of the pin 6 via a needle bearing 22, and has a small diameter portion 21a at its tip that makes circular contact with each crimping roller 18. A small thrust bearing 23 is fitted onto the pin 21 and interposed between the front holder 16 and each crimping roller 18, and supports the thrust load of each crimping roller 18 on the inner circumferential side of each roller shaft 17. There is. 24 is a removal pin stored in the front holder 16 in order to remove the front holder 16 from the rear holder 11. When the removal pin 24 is rotated, the mounting pin 13 of the rear holder 11 is removed from the spring 14 by a cam 24a eccentrically fixed to the tip. This allows the front holder 16 to be removed from the rear holder 11. 25 and 26 are set bolts and set screws for attaching the removal pin 24 to the front holder 16, 27 is a fixing pin for fixing the roller shaft 17 to the front holder 16, 28 is a housing, and 29 is a seal.

Next, the crimping operation in the above configuration will be explained. First, a cylindrical member 1 with a collar 1a provided at one end
A plurality of members 2, 3, and 4 that are to come into contact with the top are fitted and inserted, and this is attached to, for example, a chuck and rotated. Next, the other end edge 1 of this rotating cylindrical member 1
When b is pressed against each caulking roller 18, 18,
Each crimping roller 18 rotates around the other end edge 1b of the cylindrical member 1, and during that time, the other end edge 1b of the cylindrical member 1 rotates around the bending arc 18 of each crimping roller 18.
A plurality of members 2, 3, and 4 bent along the cylindrical member 1 and fitted onto the cylindrical member 1 are fastened between the collar 1a and the other bent edge 1b. At this time, each roller shaft 17
A large thrust load applied to each caulking roller 18 on the outer peripheral side of each roller shaft 17 is supported by a large thrust bearing 19, and a small thrust load applied to each caulking roller 18 on the inner peripheral side of each roller shaft 17 is supported by a small thrust bearing 23. will be paid.

According to the crimping device of the present invention, since the other end edge 1b of the cylindrical member 1 contacts each crimping roller 18 at one point and is crimped, peeling is prevented and the other end edge 1b of the cylindrical member 1 is designed. It can be bent into the shape of the street.

Effects of the Invention As explained above, this invention has a circumference of 3
Roller shafts are arranged at equal positions parallel to the axis of the holder and with their tips protruding from the holder, and each roller shaft has a rotatable caulking roller having a curved arc on its outer peripheral surface at the tip. A large thrust bearing is installed between the crimping roller and the holder on the outer periphery of each roller shaft to support the large thrust load applied to the outside of each crimping roller, and a large thrust bearing is installed on the inner periphery of each roller shaft. A small thrust bearing is placed on the side and supports the small thrust load applied to the inside of each crimping roller, which prevents peeling and forms the crimped shape as designed. It is possible to reliably join a plurality of members into one, improving the quality of caulked products. Furthermore, different thrust loads on the inside and outside of the caulking roller can be supported by large and small thrust bearings in an optimal state depending on the size of the thrust loads, and there is no need to provide a thrust bearing for each roller shaft, making it possible to rationally use thrust bearings. As a result, the number of parts can be reduced and the size can be easily realized, which has great practical value.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of a crimping roller unit applied to the crimping device of the present invention, FIGS. 2 and 3 are a central vertical sectional view and a back view thereof,
Fig. 4 is a drawing of a member to be crimped by a crimping device, Figs. 5 and 6 are a front view and a central vertical sectional view of a conventional crimping device, and Fig. 7 is a diagram of a crimping roller in a conventional crimping device. It is a drawing showing the relationship with parts. 11...Rear holder, 12...Main shaft, 16...
Front holder, 17...roller shaft, 18...caulking roller, 18a...bending arc, 19...large thrust bearing, 23...small thrust bearing.

Claims (1)

[Claims] 1 Roller shafts are disposed at three equal positions on the circumference of the holder, parallel to the axial direction of the holder, and with their tips protruding from the holder, and each roller shaft has a curved arc on its outer peripheral surface at the tip. A large thrust bearing is provided between the crimping roller and the holder on the outer periphery of each roller shaft to support a large thrust load applied to the outside of each crimping roller. and a crimping device characterized in that a small thrust bearing is provided on the inner circumferential side of each roller shaft to support a small thrust load applied to the inside of each crimping roller.