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CN-116274705-B - Device and method for die pressing and material returning of drum brake block cylinder

CN116274705BCN 116274705 BCN116274705 BCN 116274705BCN-116274705-B

Abstract

The invention relates to the technical field of brake block production, in particular to a drum brake block cylinder mould pressing material returning device and method, which are pressed downwards twice, a baffle plate is pressed downwards on a baffle plate dragging bar firstly, after the baffle plate is taken out, a brake block is pressed downwards on the baffle plate dragging bar, therefore, the device and the method can separate the partition plate from the brake pad at the pressing die, and the partition plate dragging bar is convenient to clamp the partition plate and the brake pad respectively after exiting the material returning channel, so that the equipment structure is optimized, and the moving track of the manipulator is reduced.

Inventors

  • YANG JIN
  • SHI HONGBAO
  • ZHANG CHENG

Assignees

  • 湖北德宜智精密机械有限公司

Dates

Publication Date
20260512
Application Date
20230222

Claims (9)

  1. 1. The drum-type brake block cylinder mould pressing material returning method is characterized in that a material returning channel (1) is arranged at the bottom of a pressing mould along the horizontal direction, the material returning channel (1) is provided with a partition plate dragging bar (2) for enabling a partition plate and a brake block to withdraw from the pressing mould and a material returning rod for driving the partition plate dragging bar (2) to slide, the partition plate dragging bar (2) is provided with a material returning seat (21), the side surface of the material returning seat (21) is provided with a limiting block (22) for abutting against the partition plate or the end surface of the brake block to hook the partition plate or the brake block from the pressing mould, the height of the material returning channel (1) is larger than the sum of the heights of the material returning seat (21) and the partition plate and is smaller than the sum of the heights of the material returning seat (21), the partition plate and the brake block, and the material returning seat (21) is positioned below the partition plate in the pressing mould when the brake block is pressed; the method comprises the following steps: 1) Pressing the partition board, namely, moving the partition board dragging strip (2) to the bottom of a pressing die along a material returning channel (1), and enabling a pressing block of the pressing die to descend to drop the partition board on the partition board dragging strip (2); 2) The separation baffle plate and the brake block are withdrawn, wherein the baffle plate dragging bar (2) withdraws along the material returning channel (1), the baffle plate withdraws along with the material returning channel under the drive of the limiting block (22), and the brake block is separated from the baffle plate and is left in the pressing die; 3) Removing the partition board, namely moving the partition board from the partition board dragging strip (2) to the position above the pressing die by a mechanical arm to press the partition board for the next round; 4) Pressing in the partition board to press out the brake pad, wherein the partition board dragging bar (2) moves to the bottom of the pressing die along the material returning channel (1), the pressing block of the pressing die firstly presses the partition board placed above the pressing die into the pressing die, and the brake pad is driven to fall on the partition board dragging bar (2) in a descending manner; 5) The brake block is withdrawn, namely the baffle drag strip (2) withdraws along the material returning channel (1), and the brake block withdraws along with the drive of the limiting block (22); 6) And removing the brake pad, namely moving the brake pad from the partition board dragging strip (2) to the conveyor belt by a mechanical arm.
  2. 2. The drum brake lining cylinder mold pressing material returning method as claimed in claim 1, further comprising a mechanical arm (3) for gripping a separator or a brake lining, and a mechanical arm (4) for moving the mechanical arm (3), wherein the mechanical arm (3) comprises a clamping seat (31), the clamping seat (31) is connected with the mechanical arm (4), and the clamping seat (31) is provided with two clamps (32) for clamping the separator or the brake lining from two sides, and a first cylinder (33) for driving the clamps (32).
  3. 3. The method for die pressing and material returning of drum brake pads according to claim 2, wherein the clamping base (31) is further provided with a front claw (34) for clamping a separator or a brake pad from both ends, a rear claw (35), a second cylinder (36) for driving the front claw (34) to swing, and a third cylinder (37) for driving the rear claw (35) to swing, and the front claw (34) and the rear claw (35) are hinged with the clamping base (31).
  4. 4. The method for manufacturing and returning materials by compression molding of the drum brake lining cylinder as claimed in claim 3, wherein grooves for avoiding the ends of the front claw (34) and the rear claw (35) are formed in the bottom of the material returning seat (21), and the limiting blocks (22) are symmetrically arranged on two sides of the grooves.
  5. 5. The method for producing and returning materials for drum brake lining according to claim 1, wherein the separator drag strip (2) is provided with 2 material returning seats (21), and the positions of the 2 material returning seats (21) are matched with the positions of the die cavities of the pressing die.
  6. 6. The method for manufacturing and returning materials for drum brake pad cylinder mold according to claim 1, wherein the separator drag strip (2) is provided with 2 material returning seats (21) for the separator and 2 material returning seats (21) for the brake pad, and the material returning seats (21) are positioned below the separator in the mold when the brake pad is pressed.
  7. 7. The method for removing material from a drum brake cylinder according to claim 1, wherein a guide plate (5) for guiding is provided below the separator drag strip (2), and the guide plate (5) is located outside the pressing die.
  8. 8. The method for manufacturing and returning materials by mould pressing of the drum brake pad cylinder according to claim 1, wherein the baffle drag strip (2) is provided with a supporting seat (23), the supporting seat (23) and the returning materials seat (21) are arranged along the sliding direction of the baffle drag strip (2), the upper surface of the supporting seat (23) is in a circular arc shape matched with the bottom of the baffle, the height of the supporting seat (23) is larger than the height of the returning materials seat (21), and the supporting seat (23) is positioned below the baffle in the pressing mould when the brake pad is pressed.
  9. 9. The method for producing and returning materials by compression molding of drum brake lining according to claim 8, wherein in step 1), the supporting seat (23) of the separator drag strip (2) is moved to the lower part of the separator to support the separator, the brake lining is pressed, then the returning seat (21) of the separator drag strip (2) is moved to the lower part of the separator, and the separator is placed on the returning seat (21).

Description

Device and method for die pressing and material returning of drum brake block cylinder Technical Field The invention relates to the technical field of brake block production, in particular to a device and a method for die pressing and material returning of a drum brake block cylinder. Background The brake pad is a key safety part of an automobile brake system, and the drum brake pad is approximately shaped like a tile with radian. At present, the production method of the drum brake pad is to pour powdery raw materials into a hot press to apply pressure and temperature, so that the drum brake pad is formed by hot pressing through a pressing die, a plurality of brake pads are arranged in the pressing die, a partition plate is arranged between adjacent brake pads, the partition plates below and above the brake pads are matched with the pressing die of the hot press to form a die cavity, one partition plate and the brake pad are taken out from the lower part after each pressing, and the taken partition plate is put into recycling from the upper part of the pressing die. In the prior art, the partition plate and the brake pad are pressed out simultaneously and fall into the blanking groove below, and then the blanking groove, the partition plate and the brake pad are translated out of the pressing die, and the brake pad and the partition plate are clamped and removed. Such as a device for automatically pushing out and filling a partition plate of a hot pressing die of a drum brake pad in China patent application 201911188573.0, and a drum brake pad die-pressing automatic system in China patent application 202110616038.1 filed by China. The technical scheme is characterized in that the partition plate and the brake pad are clamped simultaneously and are separated by other devices, so that the structure is complex, the clamping weight is large, the partition plate cannot be directly moved to a pressing die, the moving path is greatly increased, and the clamping device with a complex structure is adopted to clamp the brake pad and the partition plate respectively, so that the structure is complex, and the reliability is reduced. Disclosure of Invention The invention aims to overcome the defects in the prior art and provide a device and a method for die pressing and material returning of a drum brake pad cylinder, which separate a baffle plate from a brake pad by utilizing the height of a material returning channel and withdraw the baffle plate and the brake pad from a pressing die respectively, thereby being convenient for material returning. The technical scheme includes that the material returning device for the drum brake block cylinder die pressing comprises a material returning channel arranged at the bottom of a pressing die in the horizontal direction, wherein the material returning channel is provided with a partition plate dragging bar for enabling a partition plate and a brake block to withdraw from the pressing die and a material returning rod for driving the partition plate dragging bar to slide, the partition plate dragging bar is provided with a material returning seat, and the side face of the material returning seat is provided with a limiting block for abutting against the partition plate or the end face of the brake block to hook the partition plate or the brake block out of the pressing die. Preferably, the height of the material returning channel is larger than the sum of the heights of the material returning seat and the partition plate, is larger than the sum of the heights of the material returning seat and the brake block, is smaller than the sum of the heights of the material returning seat, the partition plate and the brake block, and is positioned below the partition plate in the pressing die when the brake block is pressed. Preferably, the drum brake block cylinder mould pressing material returning device further comprises a mechanical arm used for grabbing the partition plate or the brake block and a mechanical arm used for moving the mechanical arm, wherein the mechanical arm comprises a clamping seat, the clamping seat is connected with the mechanical arm, and the clamping seat is provided with two clamps used for clamping the partition plate or the brake block from two sides and a first cylinder used for driving the clamps. Preferably, the clamping seat is further provided with a front claw, a rear claw, a second cylinder and a third cylinder, wherein the front claw and the rear claw are used for clamping the partition board or the brake pad from two ends, the second cylinder drives the front claw to swing, the third cylinder drives the rear claw to swing, and the front claw and the rear claw are hinged with the clamping seat. Preferably, grooves for avoiding the ends of the front claw and the rear claw are formed in the bottom of the material returning seat, and the limiting blocks are symmetrically arranged on two sides of the grooves. Preferably, the separator drag strip is provid