JPH0452496Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Application) This invention relates to a brake shoe positioning jig in an adhesive device for bonding a lining to a brake shoe of a drum brake.

(Prior Art) A conventional bonding device, as shown in Japanese Patent Application Laid-Open No. 53-134832 shown in FIG. A lining 6 whose surface is coated with a thermosetting adhesive is provided between the pressure band 62 and the pressure band 61.
3 and 63, and the two prongs 6 of the left and right tension fittings 64.
5 into the rib 66 of the brake shoe 62,
The tension fittings 64, 64 are tensioned left and right by the springs 67, 67, and the ends 65a, 65b of the two-pronged portion 65 are attached to the ends 62a, 6 of the inner circumference of the brake shoe 62, respectively.
2b abuts against each other, thereby causing the brake shoe 62 to
This is a structure in which the lining 63 is crimped.

(Problems to be Solved by the Invention) The above-mentioned conventional device has a structure in which the ends 62a and 62b of the inner peripheral part of the brake shoe 62 abut against the ends 65a and 65b of the tension fitting 64. The shoe 62 can be displaced in the circumferential direction with respect to the tension fitting 64, and cannot be fixed at a predetermined position simply by being assembled.

For this reason, in the past, there was a problem in that the circumferential deviation of the brake shoes 62, 62 had to be visually corrected each time the brake shoes were assembled.

Moreover, the conventional device has two prongs 65 of the tension fitting 64.
is fitted to the rib 66 of the brake shoe 62, so simply removing the spring 67 will not allow the assembly of the brake shoe 62 or the removal of the brake shoe 62 after adhesion, and the pressure band 61 too,
There is the inconvenience of having to remove it each time, which increases the number of operational steps. Furthermore, the jig for adhering the friction plate of a brake shoe disclosed in Japanese Utility Model Publication No. 14089/1973 is
Instead of the tension using the springs 67 and 67 in Japanese Patent No. 134832, the pair of support frames is biased to the left and right by using the engagement action of a long hole and a wedge driven into the hole. It is the same as Publication No. 53-134832.

That is, in the friction plate adhesion jig, the fitting groove of the support frame fits into the inner circumferential portion of both ends of the brake shoe in the circumferential direction so as to sandwich this inner circumferential portion from above and below, and the fitting groove of the support frame The upper surface of the long protrusion comes into contact with the lower surface of the friction plate, and the outer circumferential surface of the step comes into contact with the inner circumferential surface of the friction plate, and the lower surface of the step of the short protrusion of the support frame comes into contact with the bottom surface of the friction plate. The outer circumferential surface of the stepped portion is in contact with the inner circumferential surface of the friction plate.

Therefore, with this structure, the brake shoe cannot be positioned in the circumferential direction of the pressure band simply by fitting the fitting grooves of the support frame into the inner peripheral portions of both circumferential ends of the brake shoe. Similar to the technique disclosed in Publication No. 53-134832, another means is required to position the brake shoe in the circumferential direction of the pressure band with respect to the support frame, and in addition, removing the brake shoe requires The pressure band also had to be removed.

This invention solves such problems with conventional devices and allows the positioning of the brake shoe during bonding work to be performed without requiring any adjustment operations by incorporating it into the bonding device.
It is designed to be easy to assemble and remove.

(Means for Solving the Problems) The configuration of this invention to solve the problems seen in the above-mentioned conventional devices is as follows: A loop-shaped pressure band 4 and left and right brake shoes located inside the loop-shaped pressure band 4. In the adhesive device, the linings 19, 19 disposed between the brake shoes 11, 11 are crimped onto the brake shoes 11, 11 by the left and right tension fittings 2, 2, which are energized by the springs 3, 3. The metal fitting 2 is composed of left and right base plates 6 that receive the spring force of the springs 3, 3, and a shoe receiving metal fitting 8 and a shoe positioning metal fitting 9 provided at both ends of each of these base plates 6, and The receiving fitting 8 is brought into contact with one circumferential end 12a of the rib 12 of the brake shoe 11 from the outside in the tension direction by the springs 3, 3 without sandwiching the rib 12, and the shoe positioning fitting 9 is brought into contact with the rib 12 of the brake shoe 11.
has a shape that engages the other circumferential end 12b of the rib 12 from the outside in the direction of tension by the springs 3, 3 without sandwiching the rib 12, thereby pressurizing the brake shoe 11. This is a brake shoe positioning jig for an adhesive device characterized by positioning the band 4 in the circumferential direction.

(Function) The shoe holder 8 provided on the base plate 6 is
The shoe positioning fitting 9 is brought into contact with one circumferential end 12a of the rib 12 of the brake shoe 11.
Since the brake shoe 11 is shaped to engage with the other circumferential end 12b of the rib 12, the brake shoe 11 is prevented from shifting in the circumferential direction by the shoe receiving fitting 8 and the shoe positioning fitting 9.

Therefore, when assembled into the bonding device 1, the brake shoe 11 was correctly positioned at a predetermined position without requiring any adjustment operation.

And each circumferential end 12 of the rib 12
Since the brake shoes a and 12b are structured so that they are not pinched by either the shoe receiving fitting 8 or the shoe positioning fitting 9 and come into contact with each other from the outside in the tension direction of the springs 3, 3, the brake shoes 11 before the bonding process
In addition, the installation operation of the lining 19 and the removal operation of the brake shoes 11, 11 after adhesion can be performed by eliminating the springs 3, 3 and reducing the distance between the left and right tension fittings 2, 2. One simple operation of moving the brake shoe 11 from the side relative to the brake shoe 4 is now sufficient.

(Example) Next, an example of this invention will be described based on the drawings.

FIG. 1 shows a plan view of the bonding device 1, and FIG. 2 shows a front view thereof.

The illustrated adhesive device 1 has left and right tension fittings 2, 2.
, springs 3, 3 that tension the tension fittings 2, 2 on the left and right, a pressure band 4 surrounding the tension fittings 2, 2, and tension fittings 2, 2.
It is constituted by a safety pin 5 that prevents it from expanding excessively.

The tension fitting 2 includes a base plate 6, a shoe receiving fitting 8 which is removably attached to both ends of the base plate 6 with pins 7, a shoe positioning fitting 9, and a sliding fitting fixed to the lower part of the base plate 6. It is composed of skates 10, 10.

The shoe receiver 8 is shaped to abut against one circumferential end 12a of the rib 12 of the brake shoe 11 from the outside in the direction of tension by the springs 3, 3, without sandwiching the rib 12. .

Further, the shoe positioning fitting 9 can be attached to the other circumferential end 12b of the rib 12 without sandwiching the rib 12.
A notch 9a is provided in such a manner that it is engaged from the outside in the tension direction of the springs 3, 3.

Therefore, when the brake shoe 11 and the lining 19 are inserted between the tension fitting 2 and the pressure band 4, the brake shoe 11
2a comes into contact with the end of the shoe receiving fitting 8, and the other circumferential end 12b fits into the notch 9a of the shoe positioning fitting 9, thereby preventing displacement in the circumferential direction.
When installed, it is always correctly positioned with respect to the adhesive device 1.

For brake shoes 11 of different sizes and shapes, the base plate 6 can be left as is by removing the pins 7, 7 and replacing both the shoe receiving bracket 8 and shoe positioning bracket 9 with the specified ones. , which can be easily handled.

A cut groove 13 is provided in the lower part of the base plate 6 to engage with a bonding device positioning body provided in a tensioning device which will be described later, and pin holes 14, 14 for lifting the bonding device 1 are provided in the base plate 6. ing.

As shown in the plan view in FIG. 5 and in the front view in FIG. 16, 16 are riveted and connected to each other, so that the shape is maintained approximately in an elliptical shape in a free state.

Furthermore, elongated holes 17 and 18 for inserting lining positioning fittings, which will be described later, are formed in the strips 15 and 15 of the pressure band 4 near the rigid pieces 16 and 16.

The rigid pieces 16, 16 also have the role of lateral positioning when the adhesive device 1 is set in a tensioning device to be described later.

Reference numeral 19 in FIGS. 1 and 2 indicates the lining to be glued.

Next, the brake shoe 1 inserted into the adhesive device 1
The tensioning device 20 used for positioning the brake shoe 1 and the lining 19 and compressing the spring 3 necessary for the above-mentioned insertion and removal of the brake shoe 11 after completion of adhesion will be described.

FIG. 3 shows a plan view, FIG. 4 shows a plan view, and FIGS. 7 and 6 show a cutaway plan view and a front view of the main part, respectively.

The left and right press heads 22 and 23 are mounted on the base 21.
A rack 26 provided on one press head 23 is attached to a piston 25 of a cylinder 24 which is slidably engaged to the left and right and fixed to the base 21, and a rack 26 provided on the other press head 22 is attached to the piston 25 of a cylinder 24 fixed to the base 21.
7 and the rack 26 are engaged with a pinion 28 which is supported on the base 21 by a shaft 28a from opposite sides.

Tables 29 and 30 are fitted into the press heads 22 and 23, respectively, so as to be slidable left and right through guide grooves 29a and 30a.
is constituted by a seat 31 having an arcuate shape in plan view, an adhesive device positioning body 32, and a slide portion 33.

The catch seat 31 has a convex portion 31a that contacts the lower surface of the lining 19, a recessed portion 31b that contacts the lower surface of the pressure band 4, and a brake shoe. It has a concave groove 31c that comes into contact with the lower surface of 11.

The adhesive device positioning body 32 is attached to the base plate 6
a convex portion 32a that fits into the cut groove 13, and receiving portions 32b, 32b that contact the lower surface of the base plate 6
and an adhesive device positioning body 32 for the base plate 6.
The guide portion 32 is composed of guide portions 32c and 32d that are wedge-shaped when viewed from the front to guide the drop into the guide portion 32.
The distance between the base inner sides c and 32d is approximately equal to the thickness of the base plate 6, so that when the adhesive device 1 is set, the base plate 6 is easily set in a predetermined position, and in the set state, the guide The base inner side c of the portion 32c and the press head 22,
The adhesive device 1 is positioned at a predetermined position of the tension device 20 by sandwiching the base plate 6 between the end surfaces of the tension device 23 from the left and right sides.

Near the left and right center of the base 21, band positioning bodies 34, 34 are provided, which have grooves 34a, 34a into which the strips 15 of the pressure band 4 can be fitted, and positioning grooves 34b into which the rigid body pieces 16 can be fitted without wobbling in the left and right direction. There is.

Lining positioning fittings 35 and 36 used for positioning the lining 19 on the bonding device 1 are attached to fitting mounting bases 37 and 38 provided so as to be moved back and forth by cylinders and pistons (not shown).

That is, the lining positioning fittings 35 and 36 are provided with tips 35a and 36a that can be inserted into the long holes 17 or 18 of the strip 15 and come into contact with both ends 19a and 19b of the lining 19, and a mounting pin hole 35b in the center. , 36b are provided.

Fitting parts 37a and 38a, which are U-shaped in side view, are provided on the fitting mounting bases 37 and 38, and the fitting parts 35c and 36c of the lining positioning fittings 35 and 36 are connected to the fitting parts 3 and 38, respectively.
7a, 38a, and the fitting parts 37a, 38a
and the mounting pin 3 in the mounting pin holes 35b and 36b, respectively.
9 and 40, the lining positioning fittings 35 and 36 are attached to the fitting mounting bases 37 and 38.

The spring guide pins 41, 42 attached to the left and right base plates 6,
6 exhibits a guiding function when they move toward or away from each other.

The bonding device 1 includes left and right pressure bodies 43, 4 that are moved up and down by a solenoid of a pressure machine (not shown).
4, the lining 19 and the upper and lower ends of the pressure band 4 and the brake shoe 11 are pressed together and fixed to the tables 29, 30.

Next, the bonding process procedure will be explained.

When the bonding device 1 is placed on the tables 29, 30, the left and right base plates 6, 6 are positioned in the front-rear direction by fitting the cut grooves 13 into the convex portions 32a of the bonding device positioning body 32. Vertical positioning is performed by the lower surface of the base plate 6 coming into contact with the portions 32b, 32b,
Base inner side c of guide part 32c and press head 2
The left and right parts of the base plate 6 are sandwiched between the end surfaces of the base plates 2 and 23, thereby positioning the pressure band 4 in the left and right direction. ,
By fitting the strips 15 into the grooves 34a, 34a, respectively, they are positioned in the front-back, left-right, and up-down directions.

With these, the adhesive device 1 can be connected to the tension device 20.
is set at a predetermined position on the tables 29, 30 of.

Next, when fluid pressure is applied to the right chamber 24a of the cylinder 24 to move the piston 25 to the extreme left position in FIGS. 3 and 4, the right rack 26 moves to the left. Pinion 28 engaged
rotates clockwise and the rack 27 on the left moves to the right, so
The base plates 6, 6 together with the left and right press heads 22, 23 are drawn together and the springs 3, 3 are killed.

Therefore, brake shoe 11 and lining 19
, shoe holder 8 and shoe positioning fitting 9
and the pressure band 4.

Next, when the brackets 37 and 38 to which the shoe positioning brackets 35 and 36 are attached are moved toward the center of the tables 29 and 30 by actuating the piston, the holes 17 and 18 of the strip 15 are visible. The tip portions 35a, 35a and 36a, 36a abut against both ends 19a, 19b of the lining 19, thereby positioning the lining 19 with respect to the pressure band 4 in the front-back direction and the left-right direction.

Next, pressurizing body 4 of the pressurizing machine toward bonding device 1
3 and 44 are lowered, and the linings 19 and 19, the pressure band 4, and the brake shoes 11 and 11 are sandwiched between the pressure bodies 43 and 44 and the tables 29 and 30 from above and below.

When the fluid pressure in the right chamber 24a of the cylinder 24 is discharged in this state, the right press head 23, the rack 26 and the piston 25 are moved by the restoring force of the springs 3, 3.
moves to the right, the pinion 28 rotates to the left, and the left rack 27 and left press head 22 move to the left by the same amount as the above-mentioned rightward movement distance.

With this left and right movement, the shoe receiver 8 is attached to one circumferential end 12a of the brake shoe 11, and
The notches 9a of the shoe positioning fittings 9 are in strong contact with the other circumferential end 12b, and the brake shoe 11 is positioned without displacement in the circumferential direction.
They are set in place with each other in close contact with the lining 19.

After the setting is completed, move the pressurizing bodies 43 and 44 upward,
The left and right hooks 45 provided on this pressurizing machine,
46 and pin holes 1 of the base plates 6, 6.
Insert the pins 47, 47 into 4, 14, and attach the adhesive device 1.
It is lifted from the tensioning device 20 and transported to a heating device (not shown) using a roller conveyor, plate conveyor, or the like.

During such conveyor transfer, the base plate 6,
skates 10, 10, provided at the bottom of 6;
... is useful for sliding on a conveyor in a stable posture with little resistance.

By changing the thickness of the skates 10 for different types of brake shoes 11, different types can always be handled by the same operation, for example, by changing the thickness of the skates 10.
By keeping the dimension from the lower surface of the skate 10 to the lower end surface of the brake shoe 11 constant for each model, positioning during transportation becomes easy.

By heating for a predetermined time, the adhesive on the surface of the lining 19 completes adhesion to the brake shoe 11.

The adhesive device 1 that has come out of the heating device is transferred to a tensioning device 20
is set again, fluid pressure is applied to the right chamber 24a of the cylinder 24, and the left and right press heads 22, 2
3 is pulled, and the shoe receiving fitting 8 and shoe positioning fitting 9 are attached to the end 12 of the brake shoe 11.
a, move away from 12b.

Then, the brake shoes 11, 11 are lifted and removed from the bonding device 1 by a magnetic chuck of a removal machine (not shown), and thus the process of bonding the lining 19 is completed.

In each of the above operating steps, all operations other than the operation of inserting the brake shoe 11 and the lining 19 into the bonding device 1 before bonding can be performed automatically.

(Effect of the invention) As described above, in the brake shoe positioning jig in the adhesive device according to this invention, the shoe receiving fitting 8 provided on the base plate 6 is attached to the brake shoe 1.
The brake shoe 11 is brought into contact with one circumferential end 12a of the rib 12 of No. 1, and the shoe positioning fitting 9 is shaped to engage with the other circumferential end 12b of the rib 12. Bracket 8
and shoe positioning metal fittings 9 prevent displacement in the circumferential direction.

Therefore, when assembled into the bonding device 1, the brake shoe 11 was correctly positioned at a predetermined position without requiring any adjustment operation.

And each circumferential end 12 of the rib 12
Since the brake shoes a and 12b are structured so that they are not pinched by either the shoe receiving fitting 8 or the shoe positioning fitting 9 and come into contact with each other from the outside in the tension direction of the springs 3, 3, the brake shoes 11 before the bonding process
In addition, the installation operation of the lining 19 and the removal operation of the brake shoes 11, 11 after adhesion can be performed by eliminating the springs 3, 3 and reducing the distance between the left and right tension fittings 2, 2. One simple operation of moving the brake shoe 11 from the side with respect to the brake shoe 4 is sufficient, which is effective in terms of bonding automation.

The invention of the embodiment in which the shoe receiving fitting 8 and the shoe positioning fitting 9 are configured to be detachable from the base plate 6 is that the shoe receiving fitting 8 and the shoe positioning fitting 9 can be attached to and detached from the base plate 6. By replacing the base plate 6 with a predetermined one, the base plate 6 can be shared as it is, which is economical.

[Brief explanation of the drawing]

Figures 1 to 12 show an embodiment of this invention, Figure 1 is a plan view of the adhesive device, Figure 2 is a front view of Figure 1, and Figure 3 is a plan view of the adhesive set in the tensioning device. , Fig. 4 is a front view of Fig. 3, Fig. 5 is a plan view of the pressure band, Fig. 6 is a front view of Fig. 5, Fig. 7 is a cross-sectional plan view of the main part of the tensioning device, Fig. 8 is a longitudinal sectional front view of the main part of FIG. 7, FIGS. 9 and 11 are bottom views of the respective lining positioning fittings, FIG. 10 is a side view of FIG. 9, and FIG. 12 is a side view of FIG. 11. FIG. 13 is a plan view of a conventional bonding device. 1...Adhesive device, 2...Tension fittings, 3...Spring,
4...Pressure band, 5...Safety pin, 6...Base plate, 7, 47...Pin, 8...Shoe receiver, 9...Shoe positioning bracket, 10...Skate, 11...Brake shoe , 12...rib,
12a, 12b... circumferential end, 13... cut groove, 14... pin hole, 15... strip, 16... rigid piece, 17, 18... long hole, 19... lining, 19a, 19b ... Both ends, 20 ... Tension device, 21 ... Base, 22, 23 ... Press head, 24 ... Cylinder, 25 ... Piston, 2
6, 27...Rack, 28...Pinion, 28a
... Axis, 29, 30 ... Table, 29a, 30
a...Guide groove, 31...Socket, 31a, 32a
...Convex portion, 31b...Concave portion, 31c...Concave groove, 3
2... Adhesive device positioning body, 32b... Receiving part, 3
2c, 32d...Guide part, 33...Slide part, 34...Band positioning body, 34a...Groove,
34b...Positioning groove, 35, 36...Lining positioning fitting, 35a, 36a...Tip part, 3
5b, 36b...Mounting pin hole, 35c, 36c...
...Mounting part, 37, 38...Bracket mounting base, 37a,
38a... Fitting part, 39, 40... Mounting pin, 4
1, 42... Spring guide pin, 43, 44... Pressure body, 45, 46... Hook.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The lining placed between the loop-shaped pressure band and the left and right brake shoes positioned inside the band is In an adhesive device for crimping a brake shoe with metal fittings, the tension fitting is attached to left and right base plates that receive the spring force of the spring, shoe receiving fittings provided at both ends of each of these base plates, and shoe positioning fittings. The shoe receiving metal fitting is brought into contact with one circumferential end of the rib of the brake shoe from the outside in the tension direction of the spring without sandwiching the rib, and the shoe positioning metal fitting is configured by a shoe positioning metal fitting. is shaped so that it engages with the other circumferential end of the rib from the outside in the tension direction of the spring without pinching the rib, thereby positioning the brake shoe in the circumferential direction of the pressure band. A brake shoe positioning jig for an adhesive device, characterized in that: (2) A brake shoe positioning jig in an adhesive device according to claim 1, wherein the shoe receiving metal fitting and the shoe positioning metal fitting are detachably supported on a base plate.