Drum brake pad hot press forming mechanism

Abstract

The drum type brake pad hot-press forming mechanism comprises a bottom shell, straight columns are fixed to the four edges of the top face of the bottom shell, a top plate is fixed to the tops of the outer walls of the straight columns, a square shell is fixed to the top face of the top plate, and a hydraulic rod penetrates through the middle of the top face of the square shell and is fixedly installed in the middle of the top face of the square shell. The outer wall of the hydraulic rod penetrates through the middle of the top face of the top plate and is fixedly connected with the middle of the top face of the top plate, a disc is fixed to the bottom face of the telescopic end of the hydraulic rod, a sliding plate is fixedly installed on the bottom face of the disc, sliding holes are formed in the four edges of the top face of the sliding plate, and the inner walls of the sliding holes of the sliding plate are slidably connected with the outer walls of the straight columns. A resistance heating rod is fixedly mounted on the inner wall of the cavity of the sliding plate, and the drum brake pad is ejected out through the arc-shaped plate, so that the problem that the mold stripping effect of the brake pad is poor due to the fact that the drum brake pad is easily clamped in a mold is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet hot pressing forming, and specifically relates to a hot pressing forming mechanism for drum brake pads. Background Art

[0002] Drum brake pads are components of an automotive braking system. The hot pressing forming mechanism is mainly based on hot pressing forming technology. By applying high temperature and high pressure to the material plate, a stable brake pad structure is formed, ensuring the dimensional accuracy of the brake pads and significantly improving the production efficiency and product quality of drum brake pads.

[0003] The patent with the publication number CN214111177U discloses a hot pressing forming die for drum brake pads. A pouring gate is provided on the outer surface of the upper end of the main body. A filtering mechanism is provided on one side of the inner wall of the pouring gate. Support columns are provided on the outer surface of the lower end of the main body. A hot pressing mechanism is provided on the outer surface of the lower end of the support columns. A forming table is provided on the outer surface of the lower end of the hot pressing mechanism. Adjusting mechanisms are provided on both sides of the forming table. Through the provided shock absorption mechanism, when the telescopic rod is subjected to pressure, the hydraulic oil inside the hydraulic column is squeezed. Since the internal space of the hydraulic column is limited, when the hydraulic oil is squeezed, it will generate a rebound force. The rebound force acts on the telescopic rod, causing the telescopic rod to reset. By using the principle of compression and release during the reciprocating motion, the shock absorption effect is achieved, thus directly replacing the early spring shock absorption. The described hot pressing forming die for drum brake pads in this patent brings a better application prospect.

[0004] However, the current hot pressing forming die for drum brake pads has the following problems: When the hot pressing forming die for drum brake pads is in use, after the drum brake pads are hot pressed and formed, due to the effect of thermal expansion and contraction, the drum brake pads are easily stuck in the die, which further leads to the problem of poor demolding effect of the brake pads. Therefore, we propose a hot pressing forming mechanism for drum brake pads. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a hot pressing forming mechanism for drum brake pads, which solves the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a drum brake pad hot pressing forming mechanism, including a bottom shell, straight columns are fixed on all four sides of the top surface of the bottom shell, a top plate is fixed on the top of the outer wall of the straight column, a square shell is fixed on the top surface of the top plate, a hydraulic rod is passed through and fixedly installed in the middle of the top surface of the square shell, the outer wall of the hydraulic rod and the middle of the top surface of the top plate are passed through and fixedly connected, a disc is fixed on the bottom surface of the telescopic end of the hydraulic rod, a slide plate is fixedly installed on the bottom surface of the disc, sliding holes are provided on all four sides of the top surface of the slide plate, the inner wall of the sliding hole of the slide plate is slidably connected to the outer wall of the straight column, two chambers are provided inside the slide plate, a resistance heating rod is fixedly installed on the inner wall of the chamber of the slide plate, and the bottom surface of the slide plate A semi-arc block is fixed in the middle, a concave die is passed through and fixed in the middle of the top surface of the square shell, a sliding column is passed through and slidably installed on the bottom end of the inner part of the concave die, an arc plate is fixed on the top surface of the sliding column, a circular plate is fixed on the bottom surface of the sliding column, a spring is arranged between the top surface of the circular plate and the bottom surface of the concave die, the spring is sleeved on the outer wall of the sliding column, the resistance heating rod transfers heat to the slide plate, and the slide plate transfers heat to the semi-arc block, and the semi-arc block contacts the material plate in the arc plate during the downward movement, and under the action of the extrusion force, the material plate on the arc plate is deformed into a drum brake pad, the telescopic end of the hydraulic rod is reset, and under the elastic force of the spring, the sliding column moves upward in the concave die, the sliding column drives the arc plate to move upward, and the arc plate ejects the formed drum brake pad.

[0007] According to the above technical solution, the bottom shell is fixedly installed at the bottom end of the frame shell, a U-shaped guard plate is fixed on the edge of the top surface of the frame shell, and a console is fixedly installed on the top of the front surface of the frame shell.

[0008] According to the above technical solution, the semi-arc block is located above the arc plate, the top surface of the arc plate is on the motion trajectory of the bottom surface of the semi-arc block, and the outer wall of the arc plate is in sliding contact with the inner wall of the die.

[0009] According to the above technical solution, a hydraulic regulator is passed through and fixedly installed on the front of the square shell, slip rings are arranged on the four sides of the top surface of the slide plate, the slip rings of the slide plate are in sliding contact with the outer wall of the straight column, and air holes are opened on both sides of the bottom surface of the die.

[0010] According to the above technical solution, a cooling device is provided on the bottom surface of the circular plate, and the cooling device is used to reduce the heat in the die. The inner wall of the cooling device is provided with a heat accumulation prevention device, and the heat accumulation prevention device is used to prevent heat from accumulating locally in the equipment.

[0011] According to the above technical scheme, a double-hole plate is fixed on the bottom surface of the circular plate, and circular holes are opened on both sides of the top surface of the double-hole plate. A refrigeration module is fixedly installed on the bottom surface of the double-hole plate, and connecting plates are fixed on the left and right sides of the refrigeration module. A copper tube passes through and is fixed on the top surface of the connecting plate. The outer wall of the copper tube is fixedly connected to the inner wall of the double-hole plate, and the top of the outer wall of the copper tube is in sliding contact with the inner wall of the pore of the die. The connecting plate drives the copper tube to move downward, and the copper tube leaves the pore of the die. The telescopic end of the hydraulic rod is reset, and the connecting plate drives the copper tube to move upward, and the copper tube enters the pore of the die, and the heat in the die enters the copper tube.

[0012] According to the above technical solution, a ring rod is fixed to the top of the outer wall of the copper tube, a vertical plate is fixed to the outer wall of the ring rod, an arc-shaped spring piece is fixed to the top of the outer wall of the vertical plate, and convex plates are fixed to the bottom of the left and right sides of the die, and a number of protrusions are respectively provided on the sides of the two protrusion plates away from each other. The outer wall of the arc-shaped spring piece is in sliding contact with the protrusions of the protrusion plate, and the arc-shaped spring piece slides downward on the protrusions of the protrusion plate. Under the impact of the arc-shaped spring piece, the protrusion plate vibrates, and the protrusion plate transmits the vibration to the die.

[0013] According to the above technical solution, the two copper tubes are located on the left and right sides of the refrigeration module, and through holes are respectively opened at the bottom of the outer walls of the two ring rods.

[0014] According to the above technical solution, a thin rod is fixed to the inner wall of the through hole of the ring rod, a long plate is fixed to the bottom surface of the thin rod, an inner screw tube is passed through and fixed to the middle of the top surface of the long plate, a screw is slidably installed on the inner wall of the inner screw tube, the bottom end of the screw is rotatably connected to the bottom end of the bottom shell, the thread groove of the screw and the inner wall of the inner screw tube are meshed with each other, an annular fan is fixed to the bottom of the outer wall of the screw, the inner screw tube moves downward in the thread groove of the screw, and under the action of the extrusion force, the screw rotates in the inner screw tube, and the screw drives the annular fan to rotate.

[0015] According to the above technical solution, L-shaped rods are passed through and fixed on both sides of the bottom surface of the long board, a square board is fixed on the end of the L-shaped rod away from the long board, and groove frames are fixed on the left and right sides of the inner wall of the bottom shell. The inner bottom end of the groove frame is on the bottom surface movement trajectory of the square board. When the square board moves downward, the groove frame limits the square board.

[0016] The present invention provides a drum brake pad hot pressing forming mechanism, which has the following beneficial effects: (1) In the present invention, through the cooperation of the bottom shell, straight column, top plate, square shell, hydraulic rod, disc, slide plate, resistance heating rod, semi-circular block, concave die, slide column, arc plate and circular plate with a spring, the resistance heating rod transfers heat to the slide plate, the slide plate transfers heat to the semi-circular block. During the downward movement of the semi-circular block, it contacts the stock plate in the arc plate. Under the action of the extrusion force, the arc plate drives the slide column to move downward, the slide column drives the circular plate to move downward, the circular plate drives the spring to move downward, and the spring is stretched by the circular plate. Under the hot pressing of the semi-circular block and the arc plate, the stock plate on the arc plate is deformed into a drum brake pad. The telescopic end of the hydraulic rod resets. Under the elastic force of the spring, the slide column moves upward in the concave die, the slide column drives the arc plate to move upward, and the arc plate ejects the formed drum brake pad, preventing the drum brake pad from being easily stuck in the mold and resulting in poor demolding effect of the brake pad.

[0017] (2) Through the setting of the temperature reduction device in the present invention, the double-hole plate, refrigeration module and connecting plate cooperate with the copper pipe. The connecting plate drives the copper pipe to move downward, the copper pipe leaves the air hole of the concave die, allowing the concave die to discharge gas during hot pressing. The telescopic end of the hydraulic rod resets, the connecting plate drives the copper pipe to move upward, the copper pipe enters the air hole of the concave die, and the heat in the concave die enters the copper pipe, and the copper pipe conducts out the heat in the concave die, preventing the concave die from having too high a temperature and resulting in poor continuous die pressing effect.

[0018] (3) Through the setting of the temperature reduction device in the present invention, the ring rod, vertical plate and arc-shaped elastic piece cooperate with the convex plate. The arc-shaped elastic piece slides downward on the convex block of the convex plate. Under the impact of the arc-shaped elastic piece, the convex plate generates vibration, and the convex plate transfers the vibration to the concave die, causing the arc plate to vibrate and eject the drum brake pad, preventing the drum brake pad from being stuck on the wall surface of the concave die and resulting in poor die ejection effect of the equipment.

[0019] (4) Through the setting of the anti-heat accumulation device in the present invention, the thin rod, long plate, inner screw tube and screw rod cooperate with the ring fan. The inner screw tube moves downward in the thread groove of the screw rod. Under the action of the extrusion force, the screw rod rotates in the inner screw tube, the screw rod drives the ring fan to rotate, and the ring fan fans the hot air in the bottom shell, preventing the heat in the bottom shell from accumulating locally and causing local overheating and damage of the bottom shell.

[0020] (5) Through the setting of the anti-heat accumulation device in the present invention, the L-shaped rod and the square plate cooperate with the groove frame. During the downward movement of the square plate, the groove frame limits the square plate, preventing the semi-circular block from over-hot pressing the stock plate on the arc plate and preventing the stock plate from having poor forming effect due to the semi-circular block over-hot pressing the stock plate on the arc plate. Brief Description of the Drawings

[0021] Figure 1 is a schematic diagram of the whole of the present invention; Figure 2 is a schematic diagram of the internal components of the present invention; Figure 3 is a schematic cross-sectional view of the bottom shell of the present invention; Figure 4 is a schematic diagram of a heat accumulation prevention device of the present invention; Figure 5 For the present invention Figure 4 A local enlarged schematic diagram of the middle A; Figure 6 is a schematic diagram of a heat accumulation prevention device of the present invention; Figure 7 For the present invention Figure 6 A local enlarged schematic diagram of point B in the middle.

[0022] In the figure: 1, bottom shell; 2, straight column; 3, top plate; 4, square shell; 5, hydraulic rod; 6, disc; 7, slide plate; 8, resistance heating rod; 9, semi-arc block; 10, die; 11, sliding column; 12, arc plate; 13, round plate; 14, spring; 15, cooling device; 151, double-hole plate; 152, refrigeration module; 153, connecting plate; 154, copper tube; 155, ring rod; 156, vertical plate; 157, arc spring piece; 158, convex plate; 16, heat accumulation prevention device; 161, thin rod; 162, long plate; 163, inner screw tube; 164, screw; 165, ring fan; 166, L-shaped rod; 167, square plate; 168, groove frame; 17, frame shell; 18, U-shaped guard plate; 19, control console. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] See also Figure 1-Figure 7One embodiment of the present invention is: a drum brake pad hot pressing forming mechanism, including a bottom shell 1, straight columns 2 are fixed on all four sides of the top surface of the bottom shell 1, a top plate 3 is fixed on the top of the outer wall of the straight column 2, a square shell 4 is fixed on the top surface of the top plate 3, a hydraulic rod 5 is passed through and fixedly installed in the middle of the top surface of the square shell 4, the outer wall of the hydraulic rod 5 and the middle of the top surface of the top plate 3 are passed through and fixedly connected, a disc 6 is fixed on the bottom surface of the telescopic end of the hydraulic rod 5, a slide plate 7 is fixedly installed on the bottom surface of the disc 6, sliding holes are opened on all four sides of the top surface of the slide plate 7, the inner wall of the sliding hole of the slide plate 7 is slidably connected to the outer wall of the straight column 2, two chambers are opened inside the slide plate 7, and the slide plate 7 A resistance heating rod 8 is fixedly installed on the inner wall of the chamber, a semi-arc block 9 is fixed in the middle of the bottom surface of the slide plate 7, a concave die 10 is passed through and fixed in the middle of the top surface of the square shell 4, a sliding column 11 is passed through and slidably installed at the bottom end of the inner part of the concave die 10, an arc plate 12 is fixed on the top surface of the sliding column 11, a circular plate 13 is fixed on the bottom surface of the sliding column 11, a spring 14 is arranged between the top surface of the circular plate 13 and the bottom surface of the concave die 10, the spring 14 is sleeved on the outer wall of the sliding column 11, the semi-arc block 9 is located above the arc plate 12, the top surface of the arc plate 12 is on the motion trajectory of the bottom surface of the semi-arc block 9, the outer wall of the arc plate 12 is in sliding contact with the inner wall of the concave die 10, and the front surface of the square shell 4 A hydraulic regulator is installed through and fixedly installed. Slip rings are arranged on all four sides of the top surface of the slide plate 7. The slip rings of the slide plate 7 are in sliding contact with the outer wall of the straight column 2. Air holes are opened on both sides of the bottom surface of the concave mold 10. The bottom shell 1 is fixedly installed at the bottom end of the frame shell 17. A U-shaped guard plate 18 is fixed on the edge of the top surface of the frame shell 17. A control console 19 is fixedly installed on the top of the front of the frame shell 17. The resistance heating rod 8 transfers heat to the slide plate 7, and the slide plate 7 transfers heat to the semi-arc block 9. The semi-arc block 9 contacts the material plate in the arc plate 12 during the downward movement. Under the action of the extrusion force, the arc plate 12 drives the slide column 11 to move downward. 11 moves downward in the die 10, the slide column 11 drives the circular plate 13 to move downward, the circular plate 13 drives the spring 14 to move downward, the spring 14 is stretched by the circular plate 13, and under the hot pressing of the semi-arc block 9 and the arc plate 12, the material plate on the arc plate 12 is deformed into a drum brake pad, the telescopic end of the hydraulic rod 5 is reset, and under the elastic force of the spring 14, the slide column 11 moves upward in the die 10, the slide column 11 drives the arc plate 12 to move upward, and the arc plate 12 ejects the formed drum brake pad, so as to avoid the drum brake pad being easily stuck in the mold when the hot pressing molding mechanism is hot pressing the material plate, resulting in poor demolding effect of the brake pad.

[0025] A cooling device 15 is provided on the bottom surface of the circular plate 13 for reducing the heat in the die 10 , and a heat accumulation prevention device 16 is provided on the inner wall of the cooling device 15 for preventing heat from accumulating locally in the equipment.

[0026] Since the drum brake pad is easily stuck in the mold due to thermal expansion and contraction after hot pressing, when using the present equipment, the frame shell 17 supports the U-shaped guard plate 18, the frame shell 17 supports the bottom shell 1, the bottom shell 1 supports the die 10, the operator places the material plate in the arc plate 12, the top plate 3 supports the square shell 4, the operator adjusts the pressure of the hydraulic rod 5 through the hydraulic regulator on the square shell 4, and at the same time, the operator starts the resistance heating rod 8 in the slide plate 7, the resistance heating rod 8 starts to heat up, the resistance heating rod 8 transfers heat to the slide plate 7, the slide plate 7 transfers heat to the semi-arc block 9, the operator starts the hydraulic rod 5 with the control console 19, the telescopic end of the hydraulic rod 5 starts to move downward, the telescopic end of the hydraulic rod 5 drives the disc 6 to move downward, the disc 6 drives the slide plate 7 to move downward, the slide plate 7 slides downward on the straight column 2, and the slide plate 7 drives the semi-arc block 9 to move downward , the semi-arc block 9 contacts the material sheet in the arc plate 12 during the downward movement, and under the action of the extrusion force, the arc plate 12 drives the sliding column 11 to move downward, and the sliding column 11 moves downward in the concave die 10, and the sliding column 11 drives the circular plate 13 to move downward, and the circular plate 13 drives the spring 14 to move downward, and the spring 14 is stretched by the circular plate 13. Under the hot pressing of the semi-arc block 9 and the arc plate 12, the material sheet on the arc plate 12 is formed into a drum brake pad. When the hot pressing is completed, the telescopic end of the hydraulic rod 5 is reset, and under the elastic force of the spring 14, the sliding column 11 moves upward in the concave die 10, and the sliding column 11 drives the arc plate 12 to move upward, and the arc plate 12 ejects the formed drum brake pad, preventing the drum brake pad from being easily stuck in the mold when the equipment is in use, thereby avoiding the problem that the drum brake pad is easily stuck in the mold when the hot pressing forming mechanism is hot pressing the material plate, resulting in poor demolding effect of the brake pad.

[0027] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, a double-hole plate 151 is fixed to the bottom surface of the circular plate 13, and circular holes are opened on both sides of the top surface of the double-hole plate 151. A refrigeration module 152 is fixedly installed on the bottom surface of the double-hole plate 151, and connecting plates 153 are fixed on the left and right sides of the refrigeration module 152. A copper tube 154 is passed through and fixed on the top surface of the connecting plate 153. The outer wall of the copper tube 154 is fixedly connected to the inner wall of the double-hole plate 151, and the top of the outer wall of the copper tube 154 is in sliding contact with the inner wall of the pore of the concave mold 10. The two copper tubes 154 Located on the left and right sides of the refrigeration module 152, the connecting plate 153 drives the copper tube 154 to move downward, and the copper tube 154 leaves the air hole of the die 10, allowing the die 10 to discharge gas when being hot-pressed. The telescopic end of the hydraulic rod 5 is reset, and the connecting plate 153 drives the copper tube 154 to move upward, and the copper tube 154 enters the air hole of the die 10. The heat in the die 10 enters into the copper tube 154, and the copper tube 154 conducts the heat in the die 10 to avoid the temperature of the die 10 being too high when the hot pressing forming mechanism is hot pressing the material plate, resulting in poor continuous pressing effect.

[0028] A ring rod 155 is fixed to the top of the outer wall of the copper tube 154, and a vertical plate 156 is fixed to the outer wall of the ring rod 155. An arc-shaped spring piece 157 is fixed to the top of the outer wall of the vertical plate 156. Lug plates 158 are fixed to the bottom of the left and right sides of the die 10. A number of bumps are respectively provided on the sides of the two lug plates 158 that are away from each other. The outer wall of the arc-shaped spring piece 157 is in sliding contact with the number of bumps of the lug plate 158. Through holes are respectively provided at the bottom of the outer walls of the two ring rods 155. The arc-shaped spring piece 157 slides downward on the bumps of the lug plate 158. Under the impact of the arc-shaped spring piece 157, the lug plate 158 vibrates, and the lug plate 158 transmits the vibration to the die 10, so that the arc plate 12 vibrates to eject the drum brake pad, so as to avoid the drum brake pad being stuck on the wall of the die 10 when the hot pressing forming mechanism is hot pressing the material plate, resulting in poor equipment top mold effect.

[0029] A thin rod 161 is fixed to the inner wall of the through hole of the ring rod 155, and a long plate 162 is fixed to the bottom surface of the thin rod 161. An inner screw tube 163 passes through and is fixed to the middle of the top surface of the long plate 162. A screw 164 is slidably installed on the inner wall of the inner screw tube 163. The bottom end of the screw 164 is rotatably connected to the bottom end of the bottom shell 1, and the thread groove of the screw 164 is meshed with the inner wall of the inner screw tube 163. A ring fan 165 is fixed to the bottom of the outer wall of the screw 164. The inner screw tube 163 moves downward in the thread groove of the screw 164. Under the action of the extrusion force, the screw 164 rotates in the inner screw tube 163, and the screw 164 drives the ring fan 165 to rotate. The ring fan 165 fans the hot air in the bottom shell 1 to prevent the heat in the bottom shell 1 from accumulating locally when the hot pressing forming mechanism is hot pressing the material plate, causing local overheating and damage to the bottom shell 1.

[0030] L-shaped rods 166 are passed through and fixed on both sides of the bottom surface of the long plate 162, and a square plate 167 is fixed on the end of the L-shaped rod 166 away from the long plate 162. Groove frames 168 are fixed on the left and right sides of the inner wall of the bottom shell 1, and the inner bottom end of the groove frame 168 is on the bottom surface movement trajectory of the square plate 167. When the square plate 167 moves downward, the square plate 167 and the groove frame 168 contact, so that the groove frame 168 limits the square plate 167, so that the semi-arc block 9 will not over-hot press the material sheet on the arc plate 12, and avoid the semi-arc block 9 over-hot pressing the material sheet on the arc plate 12 when the hot pressing forming mechanism is hot pressing the material sheet, resulting in poor material sheet forming effect.

[0031] While the slide column 11 drives the circular plate 13 to move downward, the circular plate 13 drives the double-hole plate 151 to move downward, the double-hole plate 151 drives the refrigeration module 152 to move downward, the refrigeration module 152 drives the connecting plate 153 to move downward, the connecting plate 153 drives the copper tube 154 to move downward, the copper tube 154 leaves the air hole of the die 10, and the die 10 is discharged when being hot-pressed. When the hot-pressing is completed, the telescopic end of the hydraulic rod 5 is reset, and at the same time, the operator starts the refrigeration module 152, and the refrigeration module 152 starts to cool, and the circular plate 13 drives the connecting plate 153 to move downward. The movable double-hole plate 151 moves upward, the double-hole plate 151 drives the refrigeration module 152 to move upward, the refrigeration module 152 drives the connecting plate 153 to move upward, the connecting plate 153 drives the copper tube 154 to move upward, the copper tube 154 enters the pores of the die 10, the heat in the die 10 enters into the copper tube 154, the copper tube 154 conducts the heat in the die 10 to prevent the die 10 from being overheated when the equipment is in use, thereby avoiding the problem of poor continuous molding effect caused by the die 10 being overheated when the hot pressing forming mechanism is hot pressing the material plate.

[0032] While the connecting plate 153 drives the copper tube 154 to move downward, the copper tube 154 drives the ring rod 155 to move downward, the ring rod 155 drives the vertical plate 156 to move downward, the vertical plate 156 drives the arc spring piece 157 to move downward, the arc spring piece 157 slides downward on the protrusion of the protruding plate 158, and the protruding plate 158 vibrates under the impact of the arc spring piece 157, and the protruding plate 158 transmits the vibration to the die 10, so that the arc plate 12 vibrates to eject the drum brake pad, preventing the drum brake pad from getting stuck on the wall of the die 10 when the equipment is in use, thereby avoiding the problem of poor equipment top mold effect caused by the drum brake pad getting stuck on the wall of the die 10 when the hot pressing forming mechanism is hot pressing the material plate.

[0033] While the copper tube 154 drives the ring rod 155 to move downward, the ring rod 155 drives the thin rod 161 to move downward, the thin rod 161 drives the long plate 162 to move downward, the long plate 162 drives the inner screw tube 163 to move downward, and the inner screw tube 163 moves downward in the threaded groove of the screw 164. Under the action of the extrusion force, the screw 164 rotates in the inner screw tube 163, and the screw 164 drives the annular fan 165 to rotate, and the annular fan 165 fans the hot air in the bottom shell 1 to prevent the heat from accumulating locally in the bottom shell 1 when the equipment is in use, thereby avoiding the problem of local overheating and damage of the bottom shell 1 caused by the heat accumulation in the bottom shell 1 when the hot pressing forming mechanism is hot pressing the material plate.

[0034] While the thin rod 161 drives the long plate 162 to move downward, the long plate 162 drives the L-shaped rod 166 to move downward, and the L-shaped rod 166 drives the square plate 167 to move downward. In the process of the square plate 167 moving downward, the square plate 167 contacts the groove frame 168, so that the groove frame 168 limits the square plate 167, so that the semi-arc block 9 will not over-hot-press the material sheet on the arc plate 12, thereby preventing the semi-arc block 9 from over-hot-pressing the material sheet on the arc plate 12 when the equipment is in use, thereby avoiding the problem of poor material sheet forming effect caused by the semi-arc block 9 over-hot-pressing the material sheet on the arc plate 12 when the hot pressing forming mechanism is hot pressing the material sheet.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A drum brake pad hot pressing forming mechanism, comprising a bottom shell (1), wherein four sides of the top surface of the bottom shell (1) are fixed with straight columns (2), characterized in that: A top plate (3) is fixed on the top of the outer wall of the straight column (2), a square shell (4) is fixed on the top surface of the top plate (3), a hydraulic rod (5) is passed through the middle of the top surface of the square shell (4) and is fixedly installed, a disc (6) is fixed on the bottom surface of the telescopic end of the hydraulic rod (5), a slide plate (7) is fixedly installed on the bottom surface of the disc (6), sliding holes are provided on all four sides of the top surface of the slide plate (7), the inner wall of the sliding hole of the slide plate (7) is slidably connected to the outer wall of the straight column (2), and two chambers are provided inside the slide plate (7). A resistance heating rod (8) is fixedly mounted on the inner wall of the chamber of the slide plate (7); a semi-arc block (9) is fixed in the middle of the bottom surface of the slide plate (7); a concave die (10) is passed through and fixed in the middle of the top surface of the square shell (4); a sliding column (11) is passed through and slidably mounted on the bottom end of the inner part of the concave die (10); an arc plate (12) is fixed on the top surface of the sliding column (11); a circular plate (13) is fixed on the bottom surface of the sliding column (11); and a spring (14) is arranged between the top surface of the circular plate (13) and the bottom surface of the concave die (10); A double-hole plate (151) is fixed to the bottom surface of the circular plate (13), a refrigeration module (152) is fixedly installed on the bottom surface of the double-hole plate (151), connecting plates (153) are fixed to the left and right sides of the refrigeration module (152), a copper tube (154) penetrates and is fixed to the top surface of the connecting plate (153), and a ring rod (155) is fixed to the top of the outer wall of the copper tube (154); A thin rod (161) is fixed to the inner wall of the through hole of the ring rod (155), a long plate (162) is fixed to the bottom surface of the thin rod (161), an inner screw tube (163) passes through and is fixed to the middle of the top surface of the long plate (162), a screw rod (164) is slidably mounted on the inner wall of the inner screw tube (163), and a ring fan (165) is fixed to the bottom of the outer wall of the screw rod (164).

2. A drum brake pad hot pressing forming mechanism according to claim 1, characterized in that: The bottom shell (1) is fixedly mounted on the bottom end of the frame shell (17); a U-shaped guard plate (18) is fixedly mounted on the edge of the top surface of the frame shell (17); a control console (19) is fixedly mounted on the top of the front surface of the frame shell (17); the outer wall of the hydraulic rod (5) penetrates the middle of the top surface of the top plate (3) and is fixedly connected; and the spring (14) is sleeved on the outer wall of the sliding column (11).

3. A drum brake pad hot pressing forming mechanism according to claim 2, characterized in that: The semi-arc block (9) is located above the arc plate (12), the top surface of the arc plate (12) is on the movement trajectory of the bottom surface of the semi-arc block (9), and the outer wall of the arc plate (12) is in sliding contact with the inner wall of the concave mold (10).

4. A drum brake pad hot pressing forming mechanism according to claim 3, characterized in that: A hydraulic regulator is passed through and fixedly mounted on the front of the square shell (4); slip rings are arranged on four sides of the top surface of the slide plate (7); the slip rings of the slide plate (7) are in sliding contact with the outer wall of the straight column (2); and air holes are provided on both sides of the bottom surface of the concave mold (10).

5. A drum brake pad hot pressing forming mechanism according to claim 4, characterized in that: The bottom surface of the circular plate (13) is provided with a cooling device (15), the cooling device (15) is used to reduce the heat in the die (10), and the inner wall of the cooling device (15) is provided with a heat accumulation prevention device (16), the heat accumulation prevention device (16) is used to prevent heat from accumulating locally in the equipment.

6. A drum brake pad hot pressing forming mechanism according to claim 5, characterized in that: Circular holes are provided on both sides of the top surface of the double-hole plate (151), the outer wall of the copper tube (154) is fixedly connected to the inner wall of the double-hole plate (151), and the top of the outer wall of the copper tube (154) is in sliding contact with the inner wall of the pore of the die (10).

7. A drum brake pad hot pressing forming mechanism according to claim 6, characterized in that: A vertical plate (156) is fixed to the outer wall of the ring rod (155), an arc-shaped spring piece (157) is fixed to the top of the outer wall of the vertical plate (156), and a protruding plate (158) is fixed to the bottom of the left and right sides of the concave mold (10), and a plurality of protrusions are respectively provided on the sides of the two protruding plates (158) that are away from each other, and the outer wall of the arc-shaped spring piece (157) is in sliding contact with the plurality of protrusions of the protruding plate (158).

8. A drum brake pad hot pressing forming mechanism according to claim 7, characterized in that: The two copper tubes (154) are located on the left and right sides of the refrigeration module (152), and through holes are respectively provided at the bottom of the outer walls of the two ring rods (155).

9. A drum brake pad hot pressing forming mechanism according to claim 8, characterized in that: The bottom end of the screw rod (164) is rotatably connected to the bottom end of the bottom shell (1), and the thread groove of the screw rod (164) is meshed with the inner wall of the inner screw tube (163).

10. A drum brake pad hot pressing forming mechanism according to claim 9, characterized in that: L-shaped rods (166) are passed through and fixed on both sides of the bottom surface of the long plate (162); a square plate (167) is fixed to one end of the L-shaped rod (166) away from the long plate (162); groove frames (168) are fixed to the left and right sides of the inner wall of the bottom shell (1); the inner bottom end of the groove frame (168) is located on the bottom surface movement trajectory of the square plate (167).

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