A novel brake pad and a mold and method for preparing the brake pad

Abstract

A novel brake pad and a mold and method for preparing the brake pad relate to the technical field of brake pad production. A mesh structure is formed by arranging heat dissipation grooves on a positioning steel plate, and a heat dissipation copper tube is arranged in the heat dissipation groove. The heat generated by the heating of a friction plate can be conducted through the heat dissipation copper tube, thereby improving the heat dissipation efficiency of the friction plate. The copper sheet on the heat dissipation copper tube is inserted into the friction plate, thereby optimizing the heat conduction inside the friction plate. Furthermore, since the copper sheet is bent due to the restriction of the arc-shaped slot, when it is inserted into the friction plate, it can also increase the connection effect between the positioning steel plate and the friction plate, thereby improving the stability of the connection between the two.

Description

Technical Field

[0001] The invention relates to the technical field of brake pad production, and in particular to a novel brake pad and a mold and method for preparing the brake pad. Background Art

[0002] The brake pad is composed of a friction plate and a positioning steel plate. During the manufacturing process, the ingredients of the friction plate are mixed, and then the mixed materials are extruded to form the friction plate, and then the friction plate is pasted to the positioning steel plate and sent to a high-temperature oven for baking and positioning;

[0003] For brake pads produced in this way, the friction plate is connected to the positioning steel plate only by bonding. When the operating temperature of the brake pad is high, the heat dissipation performance of the friction plate is poor. The temperature increase causes the firmness of the bonding between the friction plate and the positioning steel plate to weaken, which can easily cause the friction plate to detach from the positioning steel plate. Summary of the invention

[0004] The present invention aims to overcome the problem that the friction plate has poor heat dissipation performance, the friction plate and the positioning steel plate are only bonded by adhesive, and the stability is poor. The purpose is to provide a new brake pad and a mold and method for preparing the brake pad.

[0005] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0006] A novel brake pad comprises: a friction plate and a positioning steel plate;

[0007] The positioning steel plate is provided with heat dissipation grooves, which are staggered to form a mesh structure, and the sides of the meshes of the mesh structure are provided with arc-shaped slots;

[0008] A heat dissipation copper tube is installed in the heat dissipation groove, a copper sheet is fixed on the heat dissipation copper tube, and the copper sheet is inserted into the arc-shaped slot. The side surface of the positioning steel plate on which the heat dissipation groove is arranged is roughened to form burrs, and the burrs and the copper sheet are embedded in the friction plate.

[0009] Furthermore, a limiting groove is provided on the side of the positioning steel plate, a limiting block is installed in the limiting groove, a clamping block is provided on the limiting block, a pressing groove is provided on the side of the friction plate, a limiting bolt is provided on the side of the positioning steel plate, the limiting bolt is inserted into the limiting groove to press the limiting block, and the clamping block is inserted into the pressing groove.

[0010] Furthermore, the limiting block is provided with a heat dissipation hole, the heat dissipation hole is connected to the heat dissipation copper tube, and the limiting block is provided with a heat dissipation fin on a side away from the friction plate.

[0011] Furthermore, a retaining hole is provided on the friction plate, a limiting ring is provided in the middle of the retaining hole, a docking hole is provided on the positioning steel plate, a top column is slidably installed in the docking hole, the top column is connected to one end of the traction rope, and the other end of the traction rope passes through the limiting ring to connect to the friction block, the friction block is located in the retaining hole, the end face of the friction block is flush with the end face of the friction plate, and an extrusion spring is provided between the top column and the limiting ring.

[0012] Furthermore, a sleeve is installed in the docking hole, the sleeve is connected with the heat dissipation copper tube, the top column is located inside the sleeve, the top column is hollow inside, a piston cylinder is fixedly installed on the end of the top column, a heat dissipation piston is installed on the piston cylinder, an exhaust port is provided on the side of the piston cylinder, the piston cylinder is connected with the internal hollow structure of the top column, the top column and the side wall of the sleeve are provided with air holes, a piston rod is installed on the heat dissipation piston, a support is fixed on the end of the piston rod, a buffer wheel is installed on the support, an installation groove is provided on the friction block, the support is located in the installation groove, and a support spring is provided between the heat dissipation piston and the top column.

[0013] A mold for preparing brake pads, comprising: a lower mold base and an upper mold base, the lower mold base is provided with a mold cavity, a retention column is provided in the mold cavity, a floating column is slidably installed in the retention column, the upper mold base is provided with a pressure plate corresponding to the mold cavity on the lower mold base, a pressure column is fixed on the pressure plate, when the upper mold base and the lower mold base are closed, the pressure column contacts the floating column, and a reset spring is provided between the bottom of the floating column and the lower mold base.

[0014] A method for preparing a brake pad, comprising the following steps:

[0015] S1, mixing friction plate raw materials, placing the friction plate raw materials in a mold, and using the mold to extrude and form a friction plate and a friction block;

[0016] S2. Use casting technology to form a positioning steel plate, reserve a heat dissipation groove and an arc-shaped card groove on the bonding surface that needs to be bonded with the friction plate, and roughen the bonding surface;

[0017] S3, welding the heat dissipation copper tube, welding the heat dissipation copper tube into a corresponding mesh structure corresponding to the mesh heat dissipation groove formed on the positioning steel plate, and welding the copper sheet on the heat dissipation copper tube, pressing the heat dissipation copper tube down into the heat dissipation groove by a hydraulic press, and inserting the copper sheet on the heat dissipation copper tube into the arc-shaped slot;

[0018] S4. Apply adhesive on the bonding surface of the positioning steel plate, use a hydraulic press to press the friction plate on the bonding surface of the positioning steel plate, and finally send it into a high-temperature furnace for baking. After baking, take it out and cool it to obtain the friction plate.

[0019] The beneficial effects of the present invention are:

[0020] By arranging a mesh structure formed by heat dissipation grooves on the positioning steel plate, and arranging a heat dissipation copper tube in the heat dissipation groove, the heat generated by the friction plate can be conducted through the heat dissipation copper tube, thereby improving the heat dissipation efficiency of the friction plate. The copper sheet on the heat dissipation copper tube is inserted into the friction plate, thereby optimizing the heat conduction inside the friction plate. Furthermore, since the copper sheet is restricted by the arc-shaped slot and bends, when it is inserted into the friction plate, it can also increase the connection effect between the positioning steel plate and the friction plate, thereby improving the stability of the connection between the two.

[0021] The push column is positioned by using a friction block, a traction rope, a limit ring and an extrusion spring. When the brake pad is in normal use, the push column is restricted in the docking hole under the support of the friction block, the traction rope, the limit ring and the extrusion spring. When the friction pad is severely worn, the friction plate will wear and the friction block will also wear. When the friction block is completely worn out, the push column will pop out of the docking hole under the action of the extrusion spring due to the lack of the restriction of the friction block. The wear condition of the friction plate can be judged, which is convenient for early warning of the wear condition of the friction plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the positioning steel plate structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the friction plate structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the heat dissipation slot structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the installation of the top column of the present invention;

[0027] Figure 6 It is a schematic diagram of the brake pad mold structure of the present invention.

[0028] In the figure: 1, friction plate; 2, positioning steel plate; 12, heat dissipation groove; 13, arc-shaped card slot; 14, heat dissipation copper tube; 15, copper sheet; 16, burr; 21, limit groove; 22, limit block; 23, card block; 24, pressure groove; 25, limit bolt; 26, heat dissipation hole; 27, heat dissipation fin; 31, retention hole; 32, limit ring; 33, docking hole; 34, top column; 35, traction rope; 36, extrusion spring; 37, sleeve; 3 8. Air hole; 39. Friction block; 41. Lower die seat; 42. Upper die seat; 43. Cavity chamber; 44. Retention column; 45. Floating column; 46. Pressure plate; 47. Pressure column; 48. Return spring; 49. Pinhole; 50. Insert pin; 51. Piston cylinder; 52. Heat dissipation piston; 53. Exhaust port; 54. Piston rod; 55. Support; 56. Buffer wheel; 57. Mounting groove; 58. Support spring; 59. End cover; 60. Coordinating ring. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams. Example 1

[0030] like Figure 1-Figure 5 As shown, a novel brake pad comprises: a friction plate 1, a positioning steel plate 2;

[0031] The positioning steel plate 2 is provided with heat dissipation grooves 12, which are staggered to form a mesh structure. The sides of the meshes of the mesh structure are provided with arc-shaped card grooves 13. The arc-shaped card grooves 13 on the sides of each mesh are arranged in pairs. The arc-shaped card grooves 13 are arc-shaped structures formed by bending a semicircle along the middle axis. The arc openings of the arc-shaped card grooves 13 on the sides of the same mesh face opposite directions.

[0032] A heat dissipation copper tube 14 is installed in the heat dissipation groove 12, and a copper sheet 15 is fixed on the heat dissipation copper tube 14. The copper sheet 15 is a circular structure with the same semicircular radius as the arc-shaped slot 13. The copper sheet 15 is inserted into the arc-shaped slot 13. The side surface of the positioning steel plate 2 on which the heat dissipation groove 12 is set is roughened to form a burr 16. The burr 16 and the copper sheet 15 are embedded in the friction plate 1;

[0033] By arranging a mesh structure formed by heat dissipation grooves 12 on the positioning steel plate 2, and arranging heat dissipation copper tubes 14 in the heat dissipation grooves 12, the heat generated by the friction plate 1 can be conducted through the heat dissipation copper tubes 14, thereby improving the heat dissipation efficiency of the friction plate 1. The copper sheet 15 on the heat dissipation copper tubes 14 is inserted into the friction plate 1, thereby optimizing the heat conduction inside the friction plate 1. Furthermore, since the copper sheet 15 is restricted by the arc-shaped slots 13 and is bent, it is inserted into the friction plate 1 in an arc-shaped posture, so that the copper sheet 15 has a certain anti-bending performance during the insertion process, and can also increase the connection effect between the positioning steel plate 2 and the friction plate 1, and improve the stability of the connection between the two.

[0034] A limiting groove 21 is provided on the side of the positioning steel plate 2, a limiting block 22 is installed in the limiting groove 21, a clamping block 23 is provided on the limiting block 22, a pressing groove 24 is provided on the side of the friction plate 1, a limiting bolt 25 is provided on the side of the positioning steel plate 2, the limiting bolt 25 is inserted into the limiting groove 21 to press the limiting block 22, the clamping block 23 is inserted into the pressing groove 24, the limiting bolt 25 presses the limiting block 22, and the clamping block 23 on the limiting block 22 is pressed into the pressing groove 24, so as to position the friction plate 1, prevent the friction plate 1 from being separated from the positioning steel plate 2, and improve the stability of the connection between the two;

[0035] The limiting block 22 is provided with a heat dissipation hole 26, which is connected to the heat dissipation copper tube 14 to prevent the limiting block 22 from blocking the heat dissipation copper tube 14. The limiting block 22 is provided with a heat dissipation fin 27 on the side away from the friction plate 1, and the heat dissipation fin 27 is used to increase the heat dissipation area and improve the heat dissipation effect.

[0036] A retaining hole 31 is provided on the friction plate 1, a limiting ring 32 is provided in the middle of the retaining hole 31, a docking hole 33 corresponding to the retaining hole 31 is provided on the positioning steel plate 2, a top column 34 is slidably installed in the docking hole 33, the top column 34 is connected to one end of a traction rope 35, and the other end of the traction rope 35 passes through the limiting ring 32 to connect a friction block 39, the friction block 39 is located in the retaining hole 31, and the end face of the friction block 39 is flush with the end face of the friction plate 1, and an extrusion spring 36 is provided between the top column 34 and the limiting ring 32. Under the action of the extrusion spring 36, the top column 34 is always kept at one side of the positioning steel plate 2. The thrust of the push rod 34 is limited by the friction block 39, the traction rope 35 and the limit ring 32, so that the top column 34 is kept in the docking hole 33. When the friction plate 1 is worn during use, the friction plate 1 is worn, and the friction block 39 in the retention hole 31 is also worn. When the friction block 39 is completely worn away, there is no constraint connection between the traction rope 35 and the friction block 39. At this time, under the action of the extrusion spring 36, the top column 34 will pop out of the docking hole 33, thereby knowing the wear degree of the friction plate 1, which is convenient for early warning of the wear condition of the friction plate 1.

[0037] A sleeve 37 is installed in the docking hole 33, and the sleeve 37 is communicated with the heat dissipation copper tube 14. The top column 34 is located inside the sleeve 37, and the top column 34 is hollow inside. A piston cylinder 51 is fixedly installed at the end of the top column 34, and a heat dissipation piston 52 is installed on the piston cylinder 51. An exhaust port 53 is provided on the side of the piston cylinder 51, and the piston cylinder 51 is communicated with the internal hollow structure of the top column 34. The top column 34 and the side wall of the sleeve 37 are provided with air holes 38. A piston rod 54 is installed on the heat dissipation piston 52, and a support 55 is fixed at the end of the piston rod 54. A buffer wheel 56 is installed on the support 55. A mounting groove 57 is provided on the friction block 39, and the support 55 is located in the mounting groove 57. A supporting spring 58 is provided between the heat dissipation piston 52 and the top column 34. When the brake pad is in use, the friction plate 1 on the brake pad is brought close to the brake wheel for braking, and the friction The buffer wheel 56 on the wiper plate 1 contacts the brake wheel in advance, and the brake wheel squeezes the buffer wheel 56, so that the support 55 squeezes the piston rod 54 into the sleeve 37, thereby pushing the heat dissipation piston 52 in the piston cylinder 51 to move. As the heat dissipation piston 52 moves, it can drive the gas flow in the sleeve 37 to improve the heat dissipation effect. The end of the sleeve 37 is provided with an end cover 59, and the top column 34 is located at one end of the sleeve 37 and is provided with a cooperative ring 60. When the friction block 39 is completely worn out, the top column 34 is pushed to move to the outside of the docking hole 33 together with the cooperative ring 60 under the action of the extrusion spring 36. The cooperative ring 60 pushes the top pressure end cover 59, and then pushes the sleeve 37 out of the docking hole 33 together. When the friction block 39 is completely worn out, the components inside the docking hole 33 are emptied to prevent the residual components inside the docking hole 33 from wearing the brake wheel. Example 2

[0038] like Figure 6 As shown, a mold for preparing a brake pad includes: a lower mold base 41 and an upper mold base 42. The lower mold base 41 is provided with a mold cavity 43, and a retention column 44 is provided in the mold cavity 43. A floating column 45 is slidably installed in the retention column 44. A pressure plate 46 is provided on the upper mold base 42 corresponding to the mold cavity 43 on the lower mold base 41, and a pressure column 47 is fixed on the pressure plate 46. When the upper mold base 42 and the lower mold base 41 are closed, the pressure column 47 contacts the floating column 45, and a reset spring 48 is provided between the bottom of the floating column 45 and the lower mold base 41; when the upper mold base 42 and the lower mold base 41 are closed, the pressure column 47 contacts the floating column 45, and a reset spring 48 is provided between the bottom of the floating column 45 and the lower mold base 41; The pressure plate 46 on the upper mold base 42 is pressed into the mold cavity 43 on the lower mold base 41, and the pressure column 47 on the upper mold base 42 presses the floating column 45 downward to press the floating column 45 down into the retention column 44. A pinhole 49 is provided on the pressure column 47, and an insertion pin 50 is provided on the retention column. When the upper mold base 42 and the lower mold base 41 are closed, the insertion pin 50 is inserted into the pinhole 49, and the part of the floating column 45 that is not pressed into the retention column 44 will form a concave annular surface with the pressure column 47. After extrusion molding, a limit ring can be directly formed in the retention hole without the need to drill a hole again. Example 3

[0039] A method for preparing a brake pad, comprising the following steps:

[0040] S1, mixing the raw materials of the friction plate 1, placing the raw materials of the friction plate 1 in a mold, and using the mold to extrude and form the friction plate 1 and the friction block;

[0041] S2, forming the positioning steel plate 2 by casting technology, reserving the heat dissipation groove 12 and the arc-shaped card groove 13 on the bonding surface to be bonded with the friction plate 1, and roughening the bonding surface;

[0042] S3, welding the heat dissipation copper tube 14, corresponding to the mesh heat dissipation groove 12 formed on the positioning steel plate 2, welding the heat dissipation copper tube 14 into a corresponding mesh structure, and welding the copper sheet 15 on the heat dissipation copper tube 14, pressing the heat dissipation copper tube 14 down into the heat dissipation groove 12 by a hydraulic press, and inserting the copper sheet 15 on the heat dissipation copper tube 14 into the arc-shaped slot 13;

[0043] S4, brushing adhesive on the bonding surface of the positioning steel plate 2, using a hydraulic press to press the friction plate 1 on the bonding surface of the positioning steel plate 2, and finally sending it into a high-temperature furnace for baking. After baking, take it out and cool it, and you can get the friction plate.

[0044] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A new type of brake pad, characterized in that: include: Friction plate, positioning steel plate; The positioning steel plate is provided with heat dissipation grooves, which are staggered to form a mesh structure, and the sides of the meshes of the mesh structure are provided with arc-shaped slots; A heat dissipation copper tube is installed in the heat dissipation groove, a copper sheet is fixed on the heat dissipation copper tube, and the copper sheet is inserted into the arc-shaped slot. The side surface of the positioning steel plate on which the heat dissipation groove is arranged is roughened to form burrs, and the burrs and the copper sheet are embedded in the friction plate; The friction plate is provided with a retaining hole, a limiting ring is provided in the middle of the retaining hole, a docking hole is provided on the positioning steel plate, a top column is slidably installed in the docking hole, the top column is connected to one end of the traction rope, and the other end of the traction rope passes through the limiting ring to connect the friction block, the friction block is located in the retaining hole, the end face of the friction block is flush with the end face of the friction plate, and an extrusion spring is provided between the top column and the limiting ring; A sleeve is installed in the docking hole, and the sleeve is connected with the heat dissipation copper tube. The top column is located inside the sleeve, and the top column is hollow inside. A piston cylinder is fixedly installed on the end of the top column, and a heat dissipation piston is installed on the piston cylinder. An exhaust port is provided on the side of the piston cylinder, and the piston cylinder is connected with the internal hollow structure of the top column. Air holes are provided on the top column and the side wall of the sleeve. A piston rod is installed on the heat dissipation piston, and a support is fixed on the end of the piston rod. A buffer wheel is installed on the support. An installation groove is provided on the friction block, and the support is located in the installation groove. A support spring is provided between the heat dissipation piston and the top column.

2. A novel brake pad according to claim 1, characterized in that: A limiting groove is provided on the side of the positioning steel plate, a limiting block is installed in the limiting groove, a clamping block is provided on the limiting block, a pressing groove is provided on the side of the friction plate, a limiting bolt is provided on the side of the positioning steel plate, the limiting bolt is inserted into the limiting groove to press the limiting block, and the clamping block is inserted into the pressing groove.

3. A novel brake pad according to claim 2, characterized in that: The limit block is provided with a heat dissipation hole, the heat dissipation hole is communicated with the heat dissipation copper tube, and the limit block is provided with a heat dissipation fin on a side away from the friction plate.

4. A mold for preparing a brake pad, used for preparing the new brake pad according to any one of claims 1 to 3, characterized in that: include: A lower die seat and an upper die seat, the lower die seat is provided with a cavity, a retention column is provided in the cavity, a floating column is slidably installed in the retention column, a pressure plate is provided on the upper die seat corresponding to the cavity on the lower die seat, a pressure column is fixed on the pressure plate, when the upper die seat and the lower die seat are closed, the pressure column contacts the floating column, and a reset spring is provided between the bottom of the floating column and the lower die seat.

5. A method for preparing a brake pad, using the mold as claimed in claim 4, characterized in that: Here are the steps: S1, mixing friction plate raw materials, placing the friction plate raw materials in a mold, and using the mold to extrude and form a friction plate and a friction block; S2. Use casting technology to form a positioning steel plate, reserve a heat dissipation groove and an arc-shaped card groove on the bonding surface that needs to be bonded with the friction plate, and roughen the bonding surface; S3, welding the heat dissipation copper tube, welding the heat dissipation copper tube into a corresponding mesh structure corresponding to the mesh heat dissipation groove formed on the positioning steel plate, and welding the copper sheet on the heat dissipation copper tube, pressing the heat dissipation copper tube down into the heat dissipation groove by a hydraulic press, and inserting the copper sheet on the heat dissipation copper tube into the arc-shaped slot; S4. Apply adhesive on the bonding surface of the positioning steel plate, use a hydraulic press to press the friction plate on the bonding surface of the positioning steel plate, and finally send it into a high-temperature furnace for baking. After baking, take it out and cool it to obtain the friction plate.

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