JPS5914305Y2 - Automotive leaf spring assembly equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a leaf spring assembly device for an automobile.

Conventionally, in automobiles such as trucks, a leaf spring 1 is used as a rear suspension as shown in FIG.
is provided using.

This leaf spring 1 is attached to the left and right sides of the rear axle 2 using U bolts 3. Conventionally, as shown in FIGS. 2 and 3, the leaf spring 1 is installed upside down and then A method is adopted in which both ends are supported by fixing jigs 4, the rear axle 2 is placed on the upper surface of the center part of the leaf spring 1, and the leaf spring 1 and rear axle 2 are integrally assembled using U bolts 3. .

However, not only the length dimension 1 of the leaf spring 1 varies depending on the vehicle model, but also the assembly interval m between the leaf springs 1, so conventionally, the fixing jig 4 has to be replaced or the attachment has to be replaced. This has been used to cope with the above-mentioned changes in length and assembly position, but this has the drawback of extremely poor workability.

This invention was devised in view of the above-mentioned drawbacks, and its purpose is to ensure that even if the length or assembly position of the leaf spring changes,
To provide an automobile leaf spring assembling device capable of assembling many types of leaf springs to a rear axle with one device by making it possible to switch and adjust the support position of the leaf spring in response to such changes. be.

The present invention will be described below with reference to the accompanying drawings.

4 to 6 are general views of the leaf spring assembly device according to the present invention, in which 10 is a base, 11 is a total of four holders supporting both ends of the two nof springs 1, 31 is a U-bolt support provided between the two receiving jigs 11 that support both ends of the leaf spring 1, and 41 is a rear axle conveyor provided in the center.

As shown in FIG. 7, the receiving jig 11 includes a shaft 14 that is rotatably held by a support 12 erected on a base 10 via a bearing 13, and is fixed to a prismatic portion 14a of the shaft 14. from four pedestals 15, 16, 17, 18, a support frame 19 that is rotatably provided relative to the shaft 14, a rotating cylinder 20, a tilting cylinder 23, and a stopper cylinder 26. It is configured.

As shown in FIG. 8, the pedestals 15, 16, 17, and 18 project radially from the shirt 1-14 at 90° intervals, and each has a concave shape so that the end of the leaf spring 1 can be engaged with the pedestals 15, 16, 17, 18. It has engaging portions 15a, 16a, 17a, and 18a.

Three pedestals on both sides and above in Figure 8 15.16.1
7 have the same shape and are provided at different positions in the axial direction of the shaft 14, so as to be able to accommodate changes in the assembly interval m of the leaf springs 1.

Further, the lower pedestal 18 projects higher from the shaft 14 than the other pedestals, and its engaging portion 18a is open on one side and inclined.

This pedestal 18 is used when assembling the leaf spring 1 to the rear axle 2 with the leaf spring 1 upside down compared to FIG. 3.

The rotation cylinder 20 is connected to the shaft 1 as shown in FIG.
4 and the end of the support frame 19, and by operating this rotation cylinder 20, the shaft 14 is rotated 90° in the direction of the arrow via the arm 21.
It can be rotated step by step.

Reference numeral 22 designates a one-way clutch, which allows the shaft 14 to maintain its rotational position even after the rotation cylinder 20 is activated and returns to its original state.

Therefore, as the rotation cylinder 20 operates, the shaft 14 rotates by 90', and accordingly, any one of the pedestals 15, 16, 17° 18 can be switched to be positioned directly above. .

As shown in FIG. 10, the tilting cylinder 23 has one end attached to the support column 12 and the other end connected to the tilting frame 24 which is integrally fixed to the support frame 69.

By operating this tilting cylinder 23, the support frame 19 is tilted at a predetermined angle (
For example, it can be tilted by 6°.

25 is an adjustment screw, and when the tilting cylinder 23 is operated, the side surface of the lower end of the tilting frame 24 is adjusted by the adjustment screw 2.
The tilting angle can be set accurately by coming into contact with the end face of 5.

The stopper cylinder 26 is fixed to the support frame 19, and the tip of the rod 27 is inserted into one of four positioners (L14b (see FIG. 7)) provided radially on the shaft 14 at 90° intervals. The support frame 19 and the shaft 14 are connected to rotate together.

When operating the rotation cylinder 20, the rod 27 of the stopper cylinder 26 is moved backward, and the shaft 14 is moved back.
When operating the tilting cylinder 23 with only the support frame 19 rotatable, the rod 27 of the stopper cylinder 26 is inserted into the positioning hole 14b, and the support frame 19 and shaft 1 are connected.
4 can be tilted together.

In FIG. 10, reference numeral 28 denotes a brake cylinder. After operating the rotating cylinder 20 and the tilting cylinder 23, the play cylinder 28 is operated to rotate the tip of the rod 29 integrally with the shaft 14. The shaft 14 is brought into sliding contact with the circumferential surface of the shaft 14 to restrict free rotation of the shaft 14.

As shown in FIG. 11, the U-bolt support 31 has a support stand 32 at its upper end, and a U bolt is formed on the upper surface of this support stand 32.
Multiple push-in grooves 33 that allow bolts 3 to be pushed into various locations
is formed.

The lower part of the support base 32 has a cylinder 35 that slides the support base 32 in the left-right direction in FIG. 11 via a bearing 34.

In addition, a lifting cylinder 3 is provided at the bottom of the U bolt support 31.
6, and by operating this cylinder 36, the support base 32 and the slide cylinder 35 can be raised and lowered together via wheels 38 that slide on the rails 37.

The outer side of the U-bolt support 31 is equipped with another cylinder 39 (see FIG. 4), and by operating this cylinder 39, the support base 32 and the slide are guided by the guide shaft 1-40. cylinder 35
, the rail 37, the lifting cylinder 36, etc. are integrated into the first
It can be moved in the direction perpendicular to the plane of the paper in Figure 1.

This U-bolt support 31 is connected to the holder 15 of the holder 11.
．． According to the switching of 16.17.18, the above cylinder 3
5.36.39, and is adjusted so that the support base 32 into which the U-bolt 3 is inserted is accurately positioned at the intersection of the rear axle 2 and the norf spring 1.

As shown in FIGS. 4 to 6, the glossy axle conveyor 41 can run freely on a rail 43 using its wheels 42, and can be moved by a partial stroke to the right in FIG. 4 by operating a cylinder 44. can do.

This rear axle conveyor 41 can be raised and lowered by a lifting cylinder 45 (see FIG. 6) provided at its lower part.
By lifting the differential storage portion of the rear axle 2 to which the leaf spring 1 is assembled, the engagement between the leaf spring 1 and the receiving jig 11 and the engagement between the U-bolt 3 and the U-bolt support 31 can be disengaged.

From this state, the cylinder 44 is operated to transport the rear axle 2 to the right in FIG.
is placed on the brake drum mounting device 46.

Here, the operation of the leaf spring assembling device having the above structure will be explained.

First, the rotation cylinder 20 is operated according to the assembly interval m of the leaf springs 1, and the desired pedestal is placed directly above (f). is operated to tilt the pedestal so that both ends of the leaf spring 1 are just engaged with the retaining portions of the pedestal.

Then, the U-bolt support 31 is also moved horizontally by the cylinders 35 and 39, and the support base 32 is set at a predetermined position.

Next, the leaf spring 1 is placed on the pedestal, and the U bolt 3 is inserted into a predetermined insertion groove 33 of the support 32.

Then, the glossy axle 2 is placed on the leaf spring 1, the U-bolt support 31 is raised by the cylinder 36, and the rear axle 2 and the leaf spring 1 are assembled using the U-bolt 3.

Thereafter, the rear axle 2 is lifted up by the rear axle transport tool 41, and the rear axle 2 that has been assembled is placed on the brake drum mounting tool 46 to complete the work.

As mentioned above, the shaft 14 has four pedestals 15°16,
When using the receiving jig 11 having 17.18, 4×
The position of the pedestal can be changed in 2=8 ways, and this assembly apparatus can be used to assemble eight types of leaf springs 1.

The stopper mechanism of the present invention is not limited to the one in which the rod 27 of the stopper cylinder 26 is fitted into the positioning hole 14b of the shirt I/14 as in the above embodiment, but also the one in which the rod 27 of the stopper cylinder 26 is fitted into the positioning hole 14b of the shirt I/14. Anything is fine as long as it can regulate and lift the regulations.

Further, the U-bolt support 31 does not need to be movable in three directions as in the above embodiment, but only needs to be movable up and down.

However, in the case of only vertical movement, U
A large number of bolt insertion grooves 33 may be provided in advance, or the insertion grooves 33 may be formed long so that the position of the U-bolt 3 can be adjusted.

Furthermore, the tilting cylinder 23 is connected to the shaft 14,
On the other hand, the rotation cylinder 20 is connected to the support frame 19,
The shaft 14 may be rotated via the support frame 19 and a stopper mechanism.

As is clear from the above explanation, according to the present invention, the plurality of holders provided on the shaft of the holder jig are switched by a rotating cylinder, and the holders are tilted by a tilting cylinder. Even if the assembly interval or length dimension of the leaf springs changes, one assembly device can be used to assemble many types of leaf springs, greatly improving the assembly work. I can do it.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the rear axle of an automobile, Figure 2 is a plan view showing conventional leaf spring assembly work, Figure 3 is a cross-sectional view taken along the line ■II-III in Figure 2, and Figures 4 and below are from this book. Fig. 4 is an overall plan view of the norf spring assembly device according to the invention, Fig. 5 is an overall front view thereof, Fig. 6 is an overall right side view thereof, and Fig. 7 is a view of the receiving jig. A partially sectional side view, FIG. 8 is a sectional view taken along the line Vllll-Vllll in FIG. 7 (7),
Figure 9 is a view taken along the line IX-IX in Figure 7 (7), Figure 10 is a sectional view taken along the line X-X in Figure 7, and Figure 11 is a cross-sectional view taken along the line X-X in Figure 4.
It is a line enlarged sectional view. 1... Leaf spring, 2... Rear axle, 3
...U bolt, 11...Jig, 14...Shirt l-115-18...Band, 19...Support frame, 20...Rotation cylinder, 23...Tilt cylinder, 26... stopper cylinder, 27... rod,
31... U bolt supporter, 33... Insertion groove, cylinder. 36...

Claims (3)

[Scope of utility model registration request] (1) In a device for assembling leaf springs constituting the rear suspension on both the left and right sides of the rear axle of an automobile, four holding jigs are provided to support both ends of the two leaf springs, and each of the holding jigs is comprises a horizontal shaft having a plurality of pedestals with which the ends of leaf springs engage, a support frame that rotatably holds the shaft, and a stopper that restricts and releases relative rotation of the shaft with respect to the support frame. a rotating cylinder for rotating the shaft to position the desired pedestal on the upper side; and a tilting cylinder for rotating the shaft by a predetermined angle and tilting the upper pedestal; On the other hand, a U-bolt support is provided between the two receiving jigs that support both ends of the leaf spring, and a cylinder is provided to move the U-bolt support up and down in order to assemble the leaf spring to the rear axle using the U-bolt. An automobile leaf spring assembly device characterized by: (2) A utility model in which the rotating cylinder is connected to the shaft to directly rotate the shaft, and the tilting cylinder is connected to a support frame to rotate the shaft by a predetermined angle via the support frame and the stopper. A leaf spring assembling device for an automobile according to claim 1. (3) The automotive leaf spring assembling apparatus according to claim 1 or 2, wherein the U-bolt support is movable in a horizontal plane depending on the switching position of the cradle of the holder. .