A drum brake pad hot pressing and forming mechanism

Abstract

The present invention discloses a drum brake pad hot pressing and forming mechanism, which relates to the technical field of sheet hot pressing and forming. The present invention includes a bottom shell, and straight columns are fixed to the four sides of the top surface of the bottom shell. The top of the outer wall of the straight column is fixed with a top plate, and a square shell is fixed to the top surface of the top plate. A hydraulic rod is fixedly installed through the middle of the top surface of the square shell, and the outer wall of the hydraulic rod is fixedly connected to the middle of the top surface of the top plate through the top plate. The bottom surface of the telescopic end of the hydraulic rod is fixed with a disc, and a sliding plate is fixedly installed on the bottom surface of the disc. Slide holes are formed in the four sides of the top surface of the sliding plate, and the inner wall of the slide hole of the sliding plate is slidably connected to the outer wall of the straight column. Two chambers are formed inside the sliding plate, and resistance heating rods are fixedly installed on the inner wall of the chamber of the sliding plate. In the present invention, the formed drum brake pads are ejected by the arc-shaped plate, thus avoiding the problem that the drum brake pads are easily stuck in the mold and resulting in poor demolding effect of the brake pads.

Description

Technical Field

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

[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. By providing a damping mechanism, when the telescopic rod is subjected to pressure, the hydraulic oil inside the hydraulic column is extruded. Since the internal space of the hydraulic column is limited, when the hydraulic oil is extruded, 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 damping effect is achieved, so that the early spring damping can be directly replaced. The hot pressing forming die for drum brake pads described in this patent brings better application prospects.

[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 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 technique.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A drum brake pad hot pressing and forming mechanism includes a bottom shell. Four sides of the top surface of the bottom shell are fixedly provided with straight columns. The top of the outer wall of the straight columns is fixedly provided with a top plate. The top surface of the top plate is fixedly provided with a square shell. The middle of the top surface of the square shell is penetrated and fixedly installed with a hydraulic rod. The outer wall of the hydraulic rod is penetrated and fixedly connected with the middle of the top surface of the top plate. The bottom surface of the telescopic end of the hydraulic rod is fixedly provided with a disc. The bottom surface of the disc is fixedly installed with a slide plate. Four sides of the top surface of the slide plate are provided with sliding holes. The inner wall of the sliding hole of the slide plate is slidably connected with the outer wall of the straight column. Two chambers are provided inside the slide plate. The inner wall of the chamber of the slide plate is fixedly installed with a resistance heating rod. The middle of the bottom surface of the slide plate is fixedly provided with a semi-circular block. The middle of the top surface of the square shell is penetrated and fixedly provided with a female mold. The bottom end of the inside of the female mold is penetrated and slidably installed with a sliding column. The top surface of the sliding column is fixedly provided with an arc-shaped plate. The bottom surface of the sliding column is fixedly provided with a circular plate. A spring is arranged between the top surface of the circular plate and the bottom surface of the female mold. 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-circular block. The semi-circular block contacts the stock plate in the arc-shaped plate during the downward movement. Under the action of the extrusion force, the stock plate on the arc-shaped plate is formed into a drum brake pad. The telescopic end of the hydraulic rod resets. Under the elastic force of the spring, the sliding column moves upward in the female mold, and the sliding column drives the arc-shaped plate to move upward, and the arc-shaped plate ejects the formed drum brake pad.

[0007] According to the above technical solution, the bottom shell is fixedly installed at the bottom end inside the frame shell. The edge of the top surface of the frame shell is fixedly provided with a U-shaped guard plate. The top of the front of the frame shell is fixedly installed with a control console.

[0008] According to the above technical solution, the semi-circular block is located above the arc-shaped plate. The top surface of the arc-shaped plate is on the movement track of the bottom surface of the semi-circular block. The outer wall of the arc-shaped plate is in sliding contact with the inner wall of the female mold.

[0009] According to the above technical solution, the front of the square shell is penetrated and fixedly installed with a hydraulic regulator. Four sides of the top surface of the slide plate are provided with sliding rings. The sliding rings of the slide plate are in sliding contact with the outer wall of the straight column. Two sides of the bottom surface of the female mold are provided with air holes.

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

[0011] According to the above technical solution, a double-hole plate is fixed to the bottom surface of the circular plate. Circular holes are formed 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. Connecting plates are fixed to both the left and right sides of the refrigeration module. A copper tube penetrates through and is fixed to 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. The top of the outer wall of the copper tube is in sliding contact with the inner wall of the air hole of the concave die. The connecting plate drives the copper tube to move downward, the copper tube leaves the air hole of the concave die, the telescopic end of the hydraulic rod resets, the connecting plate drives the copper tube to move upward, the copper tube enters the air hole of the concave die, and the heat in the concave 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 elastic piece is fixed to the top of the outer wall of the vertical plate. Convex plate pieces are fixed to the bottom of both the left and right sides of the concave die. A number of convex blocks are respectively arranged on the mutually remote sides of the two convex plate pieces. The outer wall of the arc-shaped elastic piece is in sliding contact with the a number of convex blocks of the convex plate piece. The arc-shaped elastic piece slides downward on the convex blocks of the convex plate piece. Under the impact of the arc-shaped elastic piece, the convex plate piece generates vibration, and the convex plate piece transmits the vibration into the concave 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 formed 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 internal screw tube penetrates through and is fixed to the middle of the top surface of the long plate. A screw rod is slidably installed in the inner wall of the internal screw tube. The bottom end of the screw rod is rotatably connected to the bottom end inside the bottom shell. The thread groove of the screw rod meshes with the inner wall of the internal screw tube. A ring fan is fixed to the bottom of the outer wall of the screw rod. The internal 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 internal screw tube, and the screw rod drives the ring fan to rotate.

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

[0016] The present invention provides a drum brake pad hot pressing and forming mechanism. It has the following beneficial effects:

[0017] (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, female 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 female 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.

[0018] (2) In the present invention, through the setting of the cooling device, 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 female die, allowing the female 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 female die, and the heat in the female die enters the copper pipe, and the copper pipe conducts out the heat in the female die, preventing the female die from having too high a temperature and resulting in poor continuous die pressing effect.

[0019] (3) In the present invention, through the setting of the cooling device, 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 female 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 female die and resulting in poor die ejection effect of the equipment.

[0020] (4) In the present invention, through the setting of the anti-heat accumulation device, 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 damage of the bottom shell.

[0021] (5) In the present invention, through the setting of the anti-heat accumulation device, 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 over-hot pressing of the semi-circular block on the stock plate of the arc plate. Description of the Drawings

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

[0023] Figure 2 is a schematic diagram of the internal components of the present invention;

[0024] Figure 3 A sectional view schematic diagram of the bottom case of the present invention;

[0025] Figure 4 A schematic diagram of the heat accumulation prevention device of the present invention;

[0026] Figure 5 For the present invention Figure 4 A partial enlarged schematic diagram at position A in the present invention;

[0027] Figure 6 A schematic diagram of the heat accumulation prevention device of the present invention;

[0028] Figure 7 For the present invention Figure 6 A partial enlarged schematic diagram at position B in the present invention.

[0029] In the figure: 1, bottom case; 2, straight column; 3, top plate; 4, square case; 5, hydraulic rod; 6, disc; 7, slide plate; 8, resistance heating rod; 9, semi-circular block; 10, female die; 11, slide post; 12, arc plate; 13, circular plate; 14, spring; 15, cooling device; 151, double-hole plate; 152, refrigeration module; 153, connection plate; 154, copper pipe; 155, ring rod; 156, vertical plate; 157, arc-shaped elastic piece; 158, tab plate; 16, heat accumulation prevention device; 161, thin rod; 162, long plate; 163, internal screw pipe; 164, screw rod; 165, ring fan; 166, L-shaped rod; 167, square plate; 168, groove frame; 17, frame case; 18, U-shaped guard plate; 19, console. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0031] Please refer to Figures 1 - 7, an embodiment of the present invention is: a drum brake pad hot pressing and forming mechanism, including a bottom shell 1. Four sides of the top surface of the bottom shell 1 are fixedly provided with straight columns 2. The top of the outer wall of the straight column 2 is fixedly provided with a top plate 3. The top surface of the top plate 3 is fixedly provided with a square shell 4. The middle of the top surface of the square shell 4 is penetrated and fixedly installed with a hydraulic rod 5. The outer wall of the hydraulic rod 5 is penetrated and fixedly connected with the middle of the top surface of the top plate 3. The bottom surface of the telescopic end of the hydraulic rod 5 is fixedly provided with a disc 6. The bottom surface of the disc 6 is fixedly installed with a slide plate 7. Slide holes are opened on four sides of the top surface of the slide plate 7. The inner wall of the slide hole of the slide plate 7 is slidably connected with the outer wall of the straight column 2. Two chambers are opened inside the slide plate 7. The inner wall of the chamber of the slide plate 7 is fixedly installed with a resistance heating rod 8. The middle of the bottom surface of the slide plate 7 is fixedly provided with a semi-circular block 9. The middle of the top surface of the square shell 4 is penetrated and fixedly provided with a concave die 10. The bottom end of the inside of the concave die 10 is penetrated and slidably installed with a slide column 11. The top surface of the slide column 11 is fixedly provided with an arc-shaped plate 12. The bottom surface of the slide column 11 is fixedly provided with a circular plate 13. 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 slide column 11. The semi-circular block 9 is located above the arc-shaped plate 12. The top surface of the arc-shaped plate 12 is on the movement track of the bottom surface of the semi-circular block 9. The outer wall of the arc-shaped plate 12 is in sliding contact with the inner wall of the concave die 10. The front of the square shell 4 is penetrated and fixedly installed with a hydraulic regulator. Slide rings are arranged on four sides of the top surface of the slide plate 7. The slide 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 die 10. The bottom shell 1 is fixedly installed at the bottom end inside the frame shell 17. The edge of the top surface of the frame shell 17 is fixedly provided with a U-shaped guard plate 18. The top of the front of the frame shell 17 is fixedly installed with a control console 19. The resistance heating rod 8 transfers heat to the slide plate 7, and the slide plate 7 transfers heat to the semi-circular block 9. The semi-circular block 9 contacts the stock plate in the arc-shaped plate 12 during the downward movement. Under the action of the extrusion force, the arc-shaped plate 12 drives the slide column 11 to move downward. The slide column 11 moves downward in the concave 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. Under the hot pressing of the semi-circular block 9 and the arc-shaped plate 12, the stock plate on the arc-shaped plate 12 is formed into a drum brake pad. The telescopic end of the hydraulic rod 5 resets. Under the elastic force of the spring 14, the slide column 11 moves upward in the concave die 10. The slide column 11 drives the arc-shaped plate 12 to move upward. The arc-shaped plate 12 ejects the formed drum brake pad, avoiding that when the hot pressing and forming mechanism hot presses the stock plate, the drum brake pad is easily stuck in the mold, resulting in poor demolding effect of the brake pad.

[0032] A cooling device 15 is arranged on the bottom surface of the circular plate 13. The cooling device 15 is used to reduce the heat in the concave die 10. 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.

[0033] Since the drum brake pads are prone to getting stuck in the mold under the action of thermal expansion and contraction after hot pressing and forming, when using this equipment, the frame shell 17 supports the U-shaped guard plate 18, the frame shell 17 supports the bottom shell 1, and the bottom shell 1 supports the female mold 10. The operator places the material plate in the arc-shaped plate 12, the top plate 3 supports the square shell 4, and the operator adjusts the pressure of the hydraulic rod 5 through the hydraulic regulator on the square shell 4. At the same time, the operator starts the resistance heating rod 8 in the sliding plate 7, and the resistance heating rod 8 begins to heat up. The resistance heating rod 8 transfers heat to the sliding plate 7, and the sliding plate 7 transfers heat to the semi-circular block 9. The operator starts the hydraulic rod 5 with the control console 19, and 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 sliding plate 7 to move downward, the sliding plate 7 slides downward on the straight column 2, and the sliding plate 7 drives the semi-circular block 9 to move downward. During the downward movement of the semi-circular block 9, it contacts the material plate in the arc-shaped plate 12. Under the action of the extrusion force, the arc-shaped plate 12 drives the sliding column 11 to move downward, the sliding column 11 moves downward in the female mold 10, the sliding column 11 drives the round plate 13 to move downward, and the round plate 13 drives the spring 14 to move downward. The spring 14 is stretched by the round plate 13. Under the hot pressing of the semi-circular block 9 and the arc-shaped plate 12, the material plate on the arc-shaped plate 12 is formed into a drum brake pad. When the hot pressing is completed, the telescopic end of the hydraulic rod 5 resets. Under the elastic force of the spring 14, the sliding column 11 moves upward in the female mold 10, the sliding column 11 drives the arc-shaped plate 12 to move upward, and the arc-shaped 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, thus avoiding the problem that the drum brake pad is easily stuck in the mold and resulting in poor demolding effect of the brake pad when the hot pressing forming mechanism hot presses the material plate.

[0034] Please refer to Figures 1 - 7 , on the basis of the above embodiments, in another embodiment of the present invention, a double-hole plate 151 is fixed to the bottom surface of the round plate 13. Round holes are provided 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. Connecting plates 153 are fixed to both the left and right sides of the refrigeration module 152. A copper tube 154 is penetrated and fixed through 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. The top of the outer wall of the copper tube 154 is in sliding contact with the inner wall of the air hole of the female mold 10. The two copper tubes 154 are 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 female mold 10 to allow the female mold 10 to discharge gas when being hot pressed. The telescopic end of the hydraulic rod 5 resets, and the connecting plate 153 drives the copper tube 154 to move upward. The copper tube 154 enters the air hole of the female mold 10, and the heat in the female mold 10 enters the copper tube 154. The copper tube 154 exports the heat in the female mold 10, avoiding the problem that the temperature of the female mold 10 is too high and resulting in poor continuous die pressing effect when the hot pressing forming mechanism hot presses the material plate.

[0035] A ring rod 155 is fixed to the top of the outer wall of the copper pipe 154. A vertical plate 156 is fixed to the outer wall of the ring rod 155. An arc-shaped elastic piece 157 is fixed to the top of the outer wall of the vertical plate 156. Convex plate 158 is fixed to the bottom of the left and right sides of the female die 10. A number of convex blocks are respectively arranged on the sides of the two convex plate 158 away from each other. The outer wall of the arc-shaped elastic piece 157 is in sliding contact with the convex blocks of the convex plate 158. Through holes are respectively formed in the bottom of the outer walls of the two ring rods 155. The arc-shaped elastic piece 157 slides downward on the convex blocks of the convex plate 158. Under the impact of the arc-shaped elastic piece 157, the convex plate 158 vibrates. The convex plate 158 transmits the vibration into the female die 10, causing the arc-shaped plate 12 to vibrate and eject the drum brake pads, so as to avoid the drum brake pads getting stuck on the wall surface of the female die 10 during the hot pressing of the material plate by the hot pressing forming mechanism, resulting in poor top die effect of the equipment.

[0036] 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 is penetrated and fixed in the middle of the top surface of the long plate 162. A screw rod 164 is slidably installed on the inner wall of the inner screw tube 163. The bottom end of the screw rod 164 is rotatably connected to the bottom end inside the bottom shell 1. The thread groove of the screw rod 164 meshes 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 rod 164. The inner screw tube 163 moves downward in the thread groove of the screw rod 164. Under the action of the extrusion force, the screw rod 164 rotates in the inner screw tube 163. The screw rod 164 drives the ring fan 165 to rotate. The ring fan 165 fans the hot air in the bottom shell 1, so as to avoid the heat in the bottom shell 1 accumulating locally during the hot pressing of the material plate by the hot pressing forming mechanism, resulting in local overheating and damage of the bottom shell 1.

[0037] L-shaped rods 166 are penetrated and fixed on both sides of the bottom surface of the long plate 162. A square plate 167 is fixed to the 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 bottom end inside the groove frame 168 is on the movement track of the bottom surface of the square plate 167. During the downward movement of the square plate 167, the square plate 167 contacts the groove frame 168, so that the groove frame 168 limits the square plate 167, preventing the semi-circular block 9 from over-hot pressing the material plate on the arc-shaped plate 12, and avoiding the material plate on the arc-shaped plate 12 being over-hot pressed by the semi-circular block 9 during the hot pressing of the material plate by the hot pressing forming mechanism, resulting in poor forming effect of the material plate.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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. During the downward movement of the square plate 167, the square plate 167 contacts the groove frame 168, so that the groove frame 168 limits the square plate 167, preventing the semi-circular block 9 from overheating and pressing the material plate on the arc plate 12. When the equipment is in use, the semi-circular block 9 is prevented from overheating and pressing the material plate on the arc plate 12, thus avoiding the problem that the forming effect of the material plate is poor due to the semi-circular block 9 overheating and pressing the material plate on the arc plate 12 when the hot pressing forming mechanism hot presses the material plate.

[0042] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

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

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

3. The hot pressing forming mechanism of a drum brake pad according to claim 2, wherein: The semi-circular block (9) is located above the arc-shaped plate (12). The top surface of the arc-shaped plate (12) is on the movement track of the bottom surface of the semi-circular block (9). The outer wall of the arc-shaped plate (12) is in sliding contact with the inner wall of the concave die (10).

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

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

6. The drum brake pad hot pressing and forming mechanism according to claim 5, characterized in that: Round holes are provided on both sides of the top surface of the double-hole plate (151).

7. A drum brake pad hot pressing and 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 elastic piece (157) is fixed to the top of the outer wall of the vertical plate (156). Convex plate pieces (158) are fixed to the bottom of the left and right sides of the female die (10). A number of convex blocks are respectively provided on one side of the two convex plate pieces (158) away from each other. The outer wall of the arc-shaped elastic piece (157) is in sliding contact with the convex blocks of the convex plate piece (158).

8. A drum brake pad hot pressing and 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). Through holes are respectively provided at the bottom of the outer walls of the two ring rods (155).

9. The hot pressing forming mechanism of a drum brake pad according to claim 8, characterized in that: The bottom end of the screw rod (164) is rotationally connected to the inner bottom end of the bottom case (1). 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 and forming mechanism according to claim 9, characterized in that: L-shaped rods (166) penetrate and are fixed to both sides of the bottom surface of the long plate (162). A square plate (167) is fixed to the end of the L-shaped rod (166) away from the long plate (162). Groove brackets (168) are fixed to the left and right sides of the inner wall of the bottom case (1). The inner bottom end of the groove bracket (168) is on the movement track of the bottom surface of the square plate (167).

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