JPH0432513Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a brake lining bonding device used for bonding a lining to a brake shoe of a drum brake.

(Prior Art) A conventional bonding device of this type uses a brake shoe with a T-shaped cross section arranged inside a loop-shaped pressure band 61, as shown in Japanese Patent Application Laid-Open No. 53-134832 shown in FIG. 13, for example. Linings 63, 63 whose surfaces are coated with a thermosetting adhesive are arranged between the pressure band 61 and the pressure band 61, and the two prongs 65 of the left and right tension fittings 64 are connected to the ribs of the brake shoe 62. 66 and interposed between the tension fittings 64, 64.
7, 67 to tension the tension fittings 64, 64 to the left and right, and the ends of the two prongs 65 to tighten the brake shoe 6.
Press the end of 2 and this will release the brake shoe 6.
2 and the lining 63 are bonded together, and heat treatment is performed to bond the lining 63 to the brake shoe 62.

The pressure band 61 is formed by welding the ends of a spring steel strip against each other, and is formed into a substantially circular shape in a free state.

(Problems to be Solved by the Invention) In the above conventional device, the pressure band 61 is removed from the outer periphery of the brake shoes 62, 62 and the brake shoes 62, 62 are attached to the tension fittings 64, 62 during each bonding process.
It has to be removed from the two prongs 65, 65 of No. 4, which increases the number of operational steps and is troublesome.

That is, the two prongs 65 of the tension fitting 64 are fitted into the rib 66 of the brake shoe 62.
In the work before bonding, it is necessary to fit the rib 66 into the bifurcated portion 65 and fit the pressure band 61 into the linings 63, 63 attached to the outside of the brake shoe 62. In the removal work after bonding, the springs 67, 67 are released, the pressure band 61 is lifted up and removed from the brake shoes 62, 62, and then the brake shoes 62, 62 are moved left and right to remove the rib 66 from the bifurcated portion 65 and the brake shoes 62, 62 are removed.
It is necessary to remove the tension fittings 64, 64 from the tension fittings 64, 64.

As described above, the conventional apparatus requires many complicated steps, making it extremely difficult to automate the bonding process and resulting in high manufacturing costs.

This invention solves the problems of the conventional apparatus and devise a method to simplify and reduce the number of operating steps in the bonding work, thereby making it possible to automate the bonding work.

(Means for Solving the Problems) The configuration of this invention to solve the problems seen in the above-mentioned conventional devices consists of a loop-shaped pressure band 4 and left and right brake switches located inside the loop-shaped pressure band 4. In the brake lining bonding device, the linings 19, 19 disposed between the brake shoes 11, 11 are crimped onto the brake shoes 11, 11 by means of left and right tension fittings 2, 2, which are energized by springs 3, 3. The pressure band 4 is formed into a roughly oval shape with rigid pieces 16, 16 for positioning provided near the center of the left and right sides, and the tension fitting 2 is attached to the rib 12 of the brake shoe 11.
The ends 12a, 12b of the rib 12 without pinching the
This is a brake lining adhesive device formed so as to come into contact with the brake lining.

(Function) The left and right tension fittings 2, 2 are attached to the end portion 12 of the rib 12 of the brake shoe 11 without sandwiching the rib 12.
a, 12b, so the left and right tension fittings 2,
2 to kill the springs 3, 3, and apply thermosetting adhesive to the left and right brake shoes 11, 11 and the surfaces between the pressure band 4 and the left and right ends of the left and right tension fittings 2, 2. The linings 19, 19 coated with can be inserted from the lateral direction of the pressure band 4, and when the dead springs 3, 3 are released, the tension fittings 2,
The left and right end portions of the lining 19 are press-fitted to the end portions 12a, 12b of the brake shoes 11, 11, and the lining 19 is press-fitted to the brake shoe 11.

After completing the adhesion through the heating process, the springs 3, 3
, the ends 12a, 1 of the brake shoe 11
The left and right ends of the tension fitting 2 are separated from 2b, and the pressure band 4 maintains an elliptical shape without shifting its position on the tensioning device described later by the rigid pieces 16, 16, so that the brake shock By lifting the u 11, 11, it can be easily removed from the pressure band 4 and tension fittings 2, 2.

In this way, the insertion operation of the brake shoe 11 and the lining 19 before the adhesion process and the removal operation of the brake shoe 11, 11 after the adhesion are performed by inserting the brake shoe 11 from the side with respect to the pressure band 4, respectively. It's as simple as moving it, and
Only one movement is required, making automation easier.

(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. In the adhesion process, the shoe receiving fitting 8 comes into contact with one end 12a of the rib 12 of the brake shoe 11, and the notch 9a of the shoe positioning fitting 9 comes into contact with the other end 12b. This abuts, thereby positioning the brake shoe 11 relative to the adhesive device 1 in the circumferential direction.

The lower part of the base plate 6 is provided with a cut groove 13 that engages with a bonding device positioning body provided in a tensioning device, which will be described later. In addition, the adhesive device 1
Pin holes 14, 14 for hoisting are provided in the base plate 6.

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 as to maintain a roughly elliptical shape in a free state.

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

In FIGS. 1 and 2, reference numeral 19 denotes a lining whose surface is coated with a thermosetting adhesive to be bonded to the brake shoe.

Next, the brake shoe 1 inserted into the adhesive device 1
The tensioning device 20 used to position the brake shoe 1 and the lining 19 and to compress the spring 3 necessary for the 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 front view, and FIGS. 7 and 8 show a cutaway plan view of the main part 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 that is slidably engaged with the left and right bases 21 in the longitudinal direction and fixed to the base 21, and
The rack 27 provided in the rack 2 and the rack 26 have a pinion 28 supported on the base 21 by a shaft 28a,
They engage each other 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 includes a convex portion 31 a that comes into contact with the lower surface of the lining 19 when the adhesive device 1 is set at a predetermined position of the tensioning device 20 , and a convex portion 31 a that is cut out to form a part of the pressure band 4 . It has a recessed portion 31b that contacts the lower surface and a recessed groove 31c that contacts the lower surface of the brake shoe 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, and 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.

A groove 34 into which the strip 15 of the pressure band 4 can be fitted is provided at both ends in the width direction near the left and right center of the base 21.
band positioning bodies 34, 34 are provided, each having a positioning groove 34b into which the rigid piece 16 can be fitted without rattling in the left-right direction.

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 missing ends 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 is provided in the center. 35b and 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.
The lining positioning fittings 35, 36 are attached to the fitting mounting bases 37, 38 by inserting the fittings 9, 40 therethrough.

The spring guide pins 41, 42 attached to the left and right base plates 6,
When the base plates 6 move towards each other or away from each other, the guide function of these base plates 6, 6 is exhibited.

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,
The base inner side c of the guide 32c and the press head 22,
The left and right parts of the base plate 6 are sandwiched between the end faces of the base plate 23, thereby positioning the pressure band 4 in the left and right direction. By fitting the pieces 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.

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
, the shoe holder 8 and the 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 lost ends 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-rear 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
moves to the right, the pinion 28 rotates to the left, and the left rack 27 and the left press head 22 move to the left by the same amount as the above-mentioned rightward movement distance.

With this horizontal movement, the shoe receiving fitting 8 strongly contacts one end 12a of the brake shoe 11, and the notch 9a of the shoe positioning fitting 9 strongly contacts the other end 12b. is set in a predetermined position 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 down, pin holes 1 of base plates 6, 6.
4, 14 and pins 47, 47, and bonding device 1
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 skate 10 for each of the various different types of brake shoes 11, different types can always be handled by the same operation. For example,
By making the dimension from the bottom surface of the skate 10 to the bottom 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 lining adhesive device according to this invention, the left and right tension fittings 2, 2 for applying adhesive pressure do not sandwich the rib 12 of the brake shoe 11, and the end of the rib 12 The pressure band 4 is formed in a roughly elliptical shape with positioning rigid pieces 16, 16 provided at two circumferential locations, so that the spring 3 .
The brake shoe 11 and the lining 19 can be easily inserted and removed within the space between the brake shoe 11 and the pressure band 4, which are correctly positioned by the brake pads 6 and maintained in a roughly elliptical shape.

That is, when the adhesion is completed, the ends 12a, 12b of the brake shoe 11 are removed by killing the springs 3, 3.
Since the brake shoes 11, 11 are separated from the left and right ends of the tension fittings 2, they can be removed from the pressure band 4 and the tension fittings 2, 2 very easily by lifting the brake shoes 11, 11.

Before bonding, the brake shoe 11 and lining 19 can be easily inserted between the tension fittings 2, 2 and the pressure band 4, and by restoring the springs 3, 3, the brake shoe 11 and lining 19 can be easily inserted. Crimping is performed.

In this way, the insertion and removal operations of the brake shoe 11 and lining 19 before and after adhesion are performed.
The bonding work can be easily automated by simply moving the brake shoe 11 and the lining 19 from the side with respect to the pressure band 4, and can be completed with only one operation. .

[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 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] The lining placed between the loop-shaped pressure band and the left and right brake shoes located inside the loop is covered by the left and right tension fittings loaded with springs. In a brake lining adhesive device that presses the pressure band onto the brake shoe, the pressure band is formed into a roughly elliptical shape with a rigid piece for positioning near the center of the left and right sides, and the tension fitting is
A brake lining adhesive device characterized in that it is formed so as to come into contact with the end of a rib of a brake shoe without pinching the rib.