KR20160056019A - Defect testing apparatus of adhesive bonding jig and bonding frame for brake shoe of automobile drum brake - Google Patents

Abstract

A bonding jig (36) is provided between a fixed block (12) and a movable block (16) of a bonding fixture tester (22). The bonding jig The load cell 18 measures the compressive force of the spring 60 to inspect whether there is a defect and the bonding die 48 is used to measure the bonding force The movable block 28 is coupled to the fixed block 24 and the movable block 28 of the bonding tester 32 installed near the fixture tester 22 and then the movable block 28 is operated through the air cylinder 26, The linear gauge 30 measures the advance distance until a tension is given to the linear gauge 30 so as to check whether there is a defect so that the defect inspection of the bonding jig 36 can be performed reliably without the help of the operator, (48) Even bad inspection is done There is a one to give to prevent adhesive failure due to fatigue in the pressing force pressing the adhesive process of the brake shoe (62).

Description

TECHNICAL FIELD [0001] The present invention relates to a bending jig for bonding a brake shoe to an automobile drum brake, and a bending jig for bonding the brake shoe to the automobile drum brake.

The present invention relates to a bonding jig used as a pressing means for adhering and fixing a lining to a rim when manufacturing a brake shoe for an automobile drum brake, a bonding jig for bonding a brake shoe of an automobile drum brake used for checking whether or not a bonding surface is defective, The present invention relates to a false defect inspection apparatus.

Generally, a brake shoe for an automobile drum brake is generally made by fixing a lining to an outer surface of a semicircular rim by thermocompression bonding. As the pressing means for the rim and the lining used at this time, Bonding jig and bonding tee are used.

In other words, the bonding jig is formed by bending a spring between the right and left pressing bars and connecting the metal strips in a ring shape, and by joining the brake shoe with the lining bonded to the outside of the left and right pressing bands of the bonding jig, , The elastic force of the spring is applied to the brake shoe through the pressing bar, and after passing through the heating furnace where high heat of about 200 ° C. is applied, the adhesive applied to the lining is hardened by heat, And the lining is strongly adhered to each other.

Therefore, the spring of the bonding jig may cause the elasticity to be weakened due to the shrinkage given in each operation and the high heat given in the shrinkage state thereof, and the bonding surface may cause a strong tensile force given by the spring of the bonding jig and a tensile force If the spring elasticity of the bonding jig is weakened or the length of the bonding frame is increased due to the high temperature, the pressing force applied to the brake shoe may be weakened, resulting in poor adhesion of the lining to the rim.

The applicant of the present application has already proposed a device for inspecting the presence or absence of a spring of a bonding jig, for example, in Japanese Unexamined Patent Application Publication No. 10-0049501 entitled " Compression spring defect inspection device for a brake shoe attachment jig for a drum brake ".

However, in the apparatus for inspecting a compression spring failure of the brake shoe attachment jig for drum brake, when the moving plate is moved forward by a predetermined distance by supplying a bonding fixture between the fixed plate and the moving plate, the compression force of the compression spring of the bonding jig The load cell is measured and the measured value is compared with a reference value given in advance through a controller to check for the presence of defects. This makes it inconvenient to use as the operator requires manual operation at the time of work, The reliability of the test result is lowered because it is difficult to constantly control the test piece. In particular, even if the defect inspection of the bonding jig is performed precisely because no means for defect inspection of the bonding frame is provided, It is necessary to take countermeasures against it. A.

Japanese Patent Application Laid-Open No. 10-2012-0049501 "Compression Spring Failure Inspection Apparatus of Brake Shoe Adhesive Jig for Drum Brake"

It is an object of the present invention to provide a brake jig for bonding a brake drum of a car drum brake which can perform a defect inspection of a bonding jig quickly and accurately without help of a work force, And an inspection apparatus.

To achieve the above object, there is provided an apparatus for bonding a brake shoe to a brake shoe of an automobile drum brake, the apparatus comprising: a bonding jig provided between a fixed block and a movable block of a bonding fixture tester in front of a frame, When the bonding jig is pressed by the operation of the block, the compression force of the spring is measured on the load cell, and the defect is inspected by comparing the measured value with the reference value previously input to the controller. Also, When the tension of the movable block is increased by the advance of the movable block by the air cylinder, the maximum advance distance of the movable block is measured by the linear gauge, And a defect inspection is performed by comparing the input reference values.

When the bonding jig 36 is supplied between the fixed block 12 and the movable block 16 of the bonding fixture tester 22, the operation of the movable block 16 by the servo motor 14 causes a defect inspection The inspection of the bonding jig 36 can be performed quickly and easily, and the working distance of the movable block 16 for inspection can be constantly controlled at all times, thereby enhancing the reliability of the inspection result In addition, it is possible to perform a defect inspection of the bonding frame 48 through the bonding frame inspection unit 32, thereby preventing adhesion failure due to insufficient pressing force during the bonding operation of the brake shoes 62 .

Figure 1: Disassembled perspective view of the bonding jig and bonding die
Fig. 2 is an exploded perspective view of a case where the brake shoe is engaged between the bonding jig and the bonding die.
Fig. 3 is a perspective view showing a case where the brake shoe is engaged between the bonding jig and the bonding die.
Figure 4: Plan view of the present invention
5: Front view of the present invention
Figure 6: Side configuration of the present invention
Fig. 7 is a plan view of the bonding fixture tester used in the present invention.
Figure 8: Front view of bonding fixture tester used in the present invention
Figure 9 is a plan view showing the supply of the bonding jig for inspection in Figure 7 of the present invention.
10 is a plan view showing the compression of the bonding jig in Fig.
Fig. 11: Plan view of the bonding tester of the present invention
Fig. 12: Front view of the bonding tester of the present invention
Figure 13 is a plan view showing the supply timing of the bonding frame in Figure 11 according to the present invention.
14 is a plan view showing a state in which the tension of the bonding frame is created in the present invention Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate like elements in the drawings, It will be omitted for the sake of clarity.

FIG. 4 is a plan view of the present invention, FIG. 5 is a front view of the present invention, and FIG. 6 is a side view of the present invention. A movable block 16 installed to be operated by the servo motor 14 at a position facing the fixed block 12 and a compression spring 16 connected to the movable block 16 to apply a compressive force given when the movable block 16 is operated And a linear gauge 20 connected between the fixed block 12 and the movable block 16 for measuring the moving distance of the movable block 16. The presence or absence of a defect in the bonding jig 36 The fixing jig 22 is installed at the rear of the bonding jig inspecting machine 22 so as to be operated by the air cylinder 26 at a position facing the fixing block 24 and the fixing block 24 A movable block 28 and a movable block 28 connected to the fixed block 24 and the movable block 28, And a bonding gauge inspecting device 32 for inspecting whether or not the bonding gutter 48 is defective and a bonding gauge inspecting device 22 and a bonding gauge inspecting device 32, (34).

8 is a front view of the bonding fixture tester used in the present invention. The bonding fixture tester 22 of the present invention has a fixing block 12 (see FIG. 7) A supporting block 38 or 40 for supporting the bonding jig 36 is formed on the movable block 16 and the fixing block 42 is fixed to the fixing block 42 on the top of the supporting block 10, And the movable block 16 is connected to the other side of the fixed block 12 on the fixed plate 42 so as to operate laterally using the LM guide 44. The load cell 18 is fixed to the movable block 16, And a ball screw 46 is connected to the other side of the load cell 18. The ball screw 46 is connected to the servo motor 14 and gears 14 fixed to the support frame 10 side, And the linear gauge 20 has its main body 20a fixed to the fixed block 12, And the branch portion 20b is connected to the movable block 16. [

FIG. 11 is a plan view of the bonding machine tester used in the present invention. FIG. 12 is a front structural view of the bonding machine tester used in the present invention. The fixing block 24 Shaped locking protrusions 50 and 52 for coupling the bonding frame 48 to the upper portion of the movable block 28 and the fixed block 24 are fixed to the fixed plate 44 and the movable block 28 is connected to one side of the movable block 28 on the fixed plate 40 so as to operate laterally using the LM guide 54. The movable block 28 Is connected to the side of the support frame 10 on the other side of the fixed block 24 so that the cylinder rod extends through the fixed block to be connected to the movable block 28. The linear gauge 30 The main body 30a is fixed to the fixed block 24 and the sensing portion 30b is fixed to the movable block 2 8).

The controller 34 controls the bonding fixture tester 22 and bonding tester 32 and compares the measured value obtained through the bonding fixture tester 22 and the reference value inputted in advance to determine whether the bonding jig 36 or the bonding tape 48 is defective And a further detailed description will be omitted.

The bonding jig 36 is moved between the fixed block 12 and the movable block 16 of the bonding fixture tester 22 to check whether the bonding jig 36 is defective using the bonding fixture tester 22, So that the left and right pressing pads 56 and 58 of the bonding jig 36 are positioned between the fixing block 12 and the supporting protrusions 38 and 40 of the movable block 16 When the movable block 16 is advanced by operating the servomotor 14 on the left and right pressing tables 56 and 58 of the bonding jig 36, the spring 60 is compressed, 18, the controller 34 compares the measurement value obtained through the load cell 18 with a previously inputted reference value to check whether the spring 60 of the bonding jig 36 is defective or not, The operator informs the operator through an indicator lamp or a buzzer sound.

That is, the load cell 18 is measured only under a strong compressive force when the spring 60 of the bonding jig 36 is compressed through the controller 34 prior to the operation, and the measurement of the load cell 18 is performed based on the normal bonding jig 36 A moving distance that is given to the controller 34 immediately before the compressive force of the spring 60 is applied in contact with the normal bonding jig 36 under the support of the fixed block 12 when the movable block 16 advances When the bonding jig 36 for back failure inspection is coupled between the fixed block 12 and the movable block 16 to operate the movable block 16, the left and right pressing pedals 56 When the spring 58 comes into contact with the support protrusions 38 and 40 of the fixed block 12 and the movable block 16 so that the strong pushing force of the spring 60 is applied by the advancement of the movable block 16, (18) senses the compressive force and a defect inspection is performed through the controller (34) The sensing portion 20b of the linear gauge 20 connected between the fixed block 12 and the movable block 16 when the movable block 16 for advancing the compression force of the spring 60 is moved is moved to the movable block 16, And the defect of the bonding jig 36 is inspected by measuring the advance distance of the movable block 16.

The spring 60 of the bonding jig 36 can be inspected for defects through the compression force using the load cell 18 and also by detecting the starting point of the compression force of the movable block 16 using the linear gauge 20 The pressing force of the linear gauge 20 can be increased in the case where the left and right pressing pedals 56 and 58 are deformed or damaged even if the repulsion force of the spring 60 is normal. This kind of defect inspection can be performed through the detection of the start point.

Further, since the operation of the movable block 16 for inspecting the defect of the bonding jig 36 is performed by the servo motor 14, the operation of the movable block 16 for inspecting the defect of the bonding jig 36 is quick In addition, since the movable block 16 can be advanced by a predetermined distance in advance, the reliability of the inspection result can be further increased.

When it is desired to check the presence or absence of a defect of the bonding frame 48 by using the bonding chip inspection unit 32, the fixing block 24 of the bonding chip inspection unit 32 and the protrusion 50 of the movable block 28 When the movable block 28 connected to the air cylinder 26 is moved forward by the operation of the air cylinder 26 through the controller 34 in a state where the bonding frame 48 is loosely coupled between the bonding cylinder 48 and the bonding cylinder 48, The linear gauge 30 connected between the fixed block 24 and the movable block 28 is connected to the fixed block 24 and the movable block 28. The movable block 28 can not advance further, The control unit 34 compares the measurement value with the reference value previously input to the controller 34 because the controller 34 measures the advancing distance of the movable block 28 from the control unit 24, that is, the length of the bonding frame 48, The presence or absence of a defect in the length of the bonding frame 48 is checked, And it is known to give workers, including through the buzzer.

Therefore, the present invention enables quick and easy operation of the movable block 16 for inspecting the bonding jig 36 by the servo motor 14 controlled by the controller 34, It is possible to operate the block 16 at a constant distance at all times to increase the reliability of the inspection result and further to inspect the defect of the bonding frame 48. Therefore, It is possible to prevent the adhesion failure due to insufficient compressive force in the process of adhering and fixing the rim 62a of the brake shoe 62 and the lining 62b using the abrasive grains 48 and 48.

(10) - receiving frame (12) - fixing block
(14) - Servo motor (16) - Movable block
(18) - Load cell (20) - Linear gauge
(20a) - a main body (20b) - a sensing part
(22) - bonding fixture tester (24) - fixing block
(26) - the air cylinder (28) - the movable block
(30) - linear gauge (30a) - body
(30b) -detection unit (32) -bonding tester
(34) -controller (36) -bonding fixture
(38) (40) - Supporting protrusion (42) - Fixing plate
(44) - LM Guide (46) - Ball Screw
(48) - Bonding frame (50) (52)
(54) -LM guide (56) (58) -Pressure band
(60) - Spring (62) - Brake Shoe
(62a) - rim (62b) - lining

Claims (7)

A fixed block 12 on the support frame 10 and a movable block 16 facing the fixed block 12 and operating along the LM guide 44. The movable block 16 and the load cell 18, And a controller 34 for controlling the pressing means and the bonding means so that the bonding jig 36 is inspected for the presence or absence of a defect in the bonding jig 36. The bonding jig for bonding the brake shoe of the automobile drum brake and the bonding die The movable block 16 of the bonding fixture tester 22 is connected to the servo motor 14 through the ball screw 46 interposed between the load cell 18 and the movable block 16, And the braking shoe is configured to be operated by the servo motor (14). The automotive drum brake according to claim 1, wherein a support protrusion (38) (40) is formed on the fixed block (12) and the movable block (16) Brake Shoe Bonding Jig and Bonding Tester. A linear gauge (20) connected to the controller (34) and measuring the moving distance of the movable block (16) is connected between the fixed block (12) and the movable block Bonding jig for bonding brake shoe of automobile drum brake and defect inspection device for bonding. The bonding tool according to claim 1, further comprising a bonding tester (32) for measuring the length of the bonding jig (48) in the vicinity of the bonding jig (22) Bonding jig for adhesion of brake shoe of automobile drum brake. The bending tester according to claim 4, wherein the bending tester (32) comprises a fixed block (24) and a movable block (24) installed to operate by an LM guide (54) and an air cylinder (26) (28). The apparatus according to claim 1, wherein the bending jig is a bushing. 6. The automobile drum brake according to claim 5, wherein the fixed block (24) and the movable block (28) are formed with protruding locking protrusions (50) (52) Bonding jig for adhesion of brake shoe and bonding defect inspection device. A linear gauge (30) connected to the controller (34) and measuring the moving distance of the movable block (28) is connected between the fixed block (24) and the movable block (28) Bonding jig for bonding brake shoe of automobile drum brake and defect inspection device for bonding.

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