A hot press for brake pad production

Abstract

The present disclosure relates to the technical field of brake pad processing, and an embodiment of the present disclosure provides a hot press for brake pad production, which comprises a rack and a door-shaped frame, the door-shaped frame is fixed on the rack, a workpiece switching assembly is arranged on the rack, and a hot pressing and cooling assembly is arranged on the door-shaped frame; the workpiece switching assembly comprises an inlet chute and an outlet chute, the inlet chute and the outlet chute are arranged at two ends of the surface of the rack, the inlet chute and the outlet chute are located on the two sides of the door-shaped frame, a circular port is arranged on the surface of the rack, a supporting disc is rotatably connected in the circular port, a circular groove is arranged on the surface of the rack, the circular groove is in communication with the inlet chute and the outlet chute, and a transmission groove is arranged on the two sides of the rack; the supporting disc is driven to rotate by electricity, a circular groove is arranged on the surface of the rack, the circular groove is in communication with the inlet chute and the outlet chute, and a transmission groove is arranged on the two sides of the rack. Through the above technical scheme, the technical problem that cooling treatment cannot be performed simultaneously with hot pressing in the prior art is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of brake pad processing, and more specifically, to a hot press for brake pad production. Background Technology

[0002] In the brake pad manufacturing process, hot pressing is a core process that determines the product's density, strength, and friction performance. High temperature and pressure are used to tightly bond the friction material to the steel backing, forming a stable structural shape. Currently, most hot presses used in the industry only have a single hot pressing function. That is, after heating and pressurizing for a preset time, the brake pad blank needs to be removed from the hot pressing mold and transferred to specialized cooling equipment for cooling and shaping. This step-by-step operation mode has obvious drawbacks: on the one hand, the billet after hot pressing is at a high temperature and is prone to deformation due to external impact during transportation; on the other hand, the separate cooling process requires additional equipment and space, and natural cooling or transfer cooling takes as long as 20-30 minutes, extending the production cycle of a single batch by nearly 40%, which seriously restricts the increase in production capacity. In addition, failure to cool in time after hot pressing will cause the resin components inside the friction material to continue to react, affecting the stability of the friction coefficient of the brake pads, thus creating potential braking safety hazards. Therefore, there is an urgent need for an integrated hot press that can perform simultaneous cooling directly after the hot pressing process to solve the problems of process fragmentation, low efficiency, and quality fluctuations in the existing technology. Utility Model Content

[0003] To overcome the above-mentioned defects, embodiments of this disclosure provide a hot press for brake pad production, which solves the technical problem in the prior art that cooling can not be performed simultaneously after hot pressing.

[0004] According to one aspect, at least one embodiment of this disclosure provides a hot press for brake pad production, comprising: A platform and a portal frame, wherein the portal frame is fixed on the platform; A workpiece switching assembly is mounted on the frame; A hot-press cooling assembly is mounted on the portal frame; The workpiece switching assembly includes a feed chute and a discharge chute. The feed chute and the discharge chute are located at both ends of the platform surface and on both sides of the gantry frame. A circular opening is provided on the platform surface, and a support plate is rotatably connected inside the circular opening.

[0005] As a further technical solution, the support plate is rotated by electric drive, the surface of the platform is provided with a circular groove, the circular groove is connected to the feed groove and the discharge groove respectively, and the two sides of the platform are provided with transmission grooves.

[0006] As a further technical solution, each of the transmission grooves is connected to a movable frame via a horizontal linear drive. One end of the movable frame extends to the surface of the platform, and a pusher plate is provided at one end of each movable frame. The pusher plate is located in the feed groove and the discharge groove, respectively.

[0007] As a further technical solution, the hot pressing assembly includes a pair of telescopic hydraulic cylinders, which are vertically mounted on the top of the gantry frame. The output end of the telescopic hydraulic cylinder is connected to a forming pressure plate, and a hot pressing plate is provided inside the bottom of the forming pressure plate.

[0008] As a further technical solution, a rectangular opening is provided on the surface of the forming plate, a cooling plate is provided inside the rectangular opening, a cooling box is installed on the upper surface of the cooling plate, and a number of baffles are provided inside the cooling box.

[0009] As a further technical solution, the baffle plates are arranged repeatedly from left to right, and the cooling box forms an S-shaped flow cavity through the baffle plates. Connecting pipes are provided on both sides of the cooling box, and several heat-conducting rods are provided inside the cooling box. Heat dissipation fins are provided on the top of the cooling box, and the heat dissipation fins are connected to the heat-conducting rods.

[0010] As a further technical solution, the support disk rotates at a fixed angle of 180° each time.

[0011] As a further technical solution, the bottom surface of the hot press plate and the bottom surface of the cooling plate are at the same horizontal level.

[0012] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the workpiece switching assembly solves the problem of inefficiency caused by process interruptions through an automated flow design. The support plate rotates precisely 180° to achieve station switching, the pusher plate and the trough work together to automatically feed and discharge the blanks, and the circular trough forms a continuous conveying path, avoiding workpiece damage during transfer. This structure reduces manual intervention, achieves seamless connection between hot pressing and cooling processes, improves production continuity, shortens the single-batch processing cycle, and adapts to the needs of large-scale production. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0014] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; In the diagram: 1. Stand; 2. Gantry frame; 3. Workpiece switching assembly; 3-1. Feed chute; 3-2. Discharge chute; 3-3. Circular opening; 3-4. Support plate; 3-5. Circular groove; 3-6. Transmission groove; 3-7. Moving frame; 3-8. Pusher plate; 4. Hot pressing assembly; 4-1. Telescopic hydraulic cylinder; 4-2. Forming plate; 4-3. Hot pressing plate; 4-4. Rectangular opening; 4-5. Cooling plate; 4-6. Cooling box; 4-7. Barrier plate; 4-8. Connecting pipe; 4-9. Heat-conducting rod; 4-10. Heat dissipation fins. Detailed Implementation

[0015] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0016] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0017] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0018] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0020] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] like Figures 1-3 As shown, a hot press for brake pad production according to an embodiment of the present disclosure is illustrated, comprising: A platform 1 and a portal frame 2, wherein the portal frame 2 is fixed on the platform 1; Workpiece switching assembly 3 is mounted on the frame 1; A hot-press cooling assembly is mounted on the portal frame 2; The workpiece switching assembly 3 includes a feed trough 3-1 and a discharge trough 3-2. The feed trough 3-1 and the discharge trough 3-2 are located at both ends of the surface of the frame 1 and are situated on both sides of the gantry frame 2. A circular opening 3-3 is provided on the surface of the frame 1, and a support plate 3-4 is rotatably fitted inside the circular opening 3-3. The support plate 3-4 is electrically driven to rotate. A circular groove 3-5 is provided on the surface of the frame 1 and is connected to both the feed trough 3-1 and the discharge trough 3-2. A transmission groove 3-6 is provided on both sides of the frame 1, and a moving frame 3-7 is horizontally and linearly driven inside each of the transmission grooves 3-6. One end of the moving frame 3-7 extends to the surface of the frame 1, and a pusher plate 3-8 is provided at one end of each moving frame 3-7. The pusher plate 3-8 is located in the feed trough 3-1 and the discharge trough 3-2, respectively.

[0022] In some examples, to achieve continuous processing of brake pads, a workpiece switching assembly 3 is designed. The feed grooves 3-1 and discharge grooves 3-2 at both ends of the surface of the frame 1 are parallel and located on both sides of the gantry frame 2, providing channels for workpiece entry and exit. The circular opening 3-3 on the surface of the frame 1 is located directly below the gantry frame 2. The internal support plate 3-4 is mounted on a rotating assembly via bearings and driven by an electric drive device (such as a servo motor with gear transmission), allowing for precise indexing rotation. The circular groove 3-5 on the surface of the frame 1 connects with the feed groove 3-1 and discharge groove 3-2, forming a circular conveying track. The surface of the support plate 3-4 is used to place brake pad blanks, ensuring accurate positioning during hot pressing. Within the transmission grooves 3-6 on both sides of the frame 1, the moving frame 3-7 is driven by a horizontal linear drive device (such as a cylinder), with one end extending to the surface of the frame 1. The pusher plate 3-8 is vertically fixed to the end of the moving frame 3-7, located within the feed groove 3-1 and discharge groove 3-2 respectively, and can slide along the groove.

[0023] During operation, the brake pad blank is placed into the feed trough 3-1. The corresponding moving frame 3-7 pushes the pusher plate 3-8, pushing the blank through the circular groove 3-5 into the support plate 3-4. The support plate 3-4 rotates to move the blank to the hot pressing position below the gantry frame 2. After hot pressing, the support plate 3-4 continues to rotate to the corresponding position in the discharge trough 3-2. The pusher plate 3-8 on the other side pushes the formed brake pad through the circular groove 3-5 into the discharge trough 3-2, completing the unloading. The rotation indexing of the support plate 3-4 ensures precise switching between the hot pressing and cooling stations, improving processing continuity. The cooperation between the pusher plate 3-8 and the trough enables automatic workpiece transfer, reducing manual intervention. The positioning groove ensures that the workpiece does not shift during hot pressing, improving forming accuracy. The annular circular groove 3-5 smooths the workpiece conveying path, avoiding bumps and damage. This component, through the coordinated rotation and pushing, achieves automated flow in brake pad processing, improving production efficiency.

[0024] like Figures 1-3 As shown in the figure, the hot pressing assembly 4 in this embodiment includes a pair of telescopic hydraulic cylinders 4-1. The telescopic hydraulic cylinders 4-1 are vertically downward mounted on the top of the portal frame 2. The output end of the telescopic hydraulic cylinders 4-1 is connected to a forming pressure plate 4-2. A hot pressing plate 4-3 is provided inside the bottom of the forming pressure plate 4-2. A rectangular opening 4-4 ​​is opened on the surface of the forming pressure plate 4-2. A cooling plate 4-5 is provided inside the rectangular opening 4-4. A cooling box 4-6 is installed on the upper surface of the cooling plate 4-5. A plurality of baffle plates 4-7 are provided inside the cooling box 4-6. The baffle plates 4-7 are arranged alternately from left to right. The cooling box 4-6 forms an S-shaped flow cavity through the baffle plates 4-7. Connecting pipes 4-8 are provided on both sides of the cooling box 4-6. A plurality of heat-conducting rods 4-9 are provided inside the cooling box 4-6. A heat dissipation fin 4-10 is provided on the top of the cooling box 4-6. The heat dissipation fin 4-10 is connected to the heat-conducting rods 4-9.

[0025] In some examples, a hot pressing assembly 4 is designed to achieve efficient molding and cooling of brake pads. This assembly includes a pair of telescopic hydraulic cylinders 4-1 vertically mounted on the top of a portal frame 2, with their output ends rigidly connected to the molding plate 4-2, providing stable downward pressure. A hot pressing plate 4-3 inside the bottom of the molding plate 4-2 is fixed with bolts and contains a built-in heating element (such as a heating wire) to quickly heat to the preset hot pressing temperature. A cooling plate 4-5 is sealed to the plate body within the rectangular opening 4-4 ​​on the surface of the molding plate 4-2. A cooling box 4-6 on the upper surface is connected to an external water source via a pipe. Baffle plates 4-7 inside the box are vertically staggered, forming an S-shaped flow cavity to extend the coolant flow path. Connecting pipes 4-8 on both sides of the cooling box 4-6 are the inlet and outlet, respectively. Several heat-conducting rods 4-9 vertically penetrate the cooling box 4-6, and heat dissipation fins 4-10 on the top are connected to the ends of the heat-conducting rods 4-9 to enhance heat dissipation efficiency. During operation, the telescopic hydraulic cylinder 4-1 pushes the forming plate 4-2 downward, and the hot press plate 4-3 contacts the workpiece, completing the hot pressing process under pressure and high temperature. After forming, the heating element stops working, and the coolant enters the cooling box 4-6 from the connecting pipe 4-8, flows along the S-shaped flow cavity, absorbs heat from the workpiece through the heat-conducting rod 4-9, and releases it through the heat dissipation fins 4-10. The cooling plate 4-5 adheres to the surface of the workpiece, accelerating heat conduction and achieving rapid cooling and shaping. The double telescopic hydraulic cylinder 4-1 ensures uniform pressure distribution and avoids uneven workpiece forming; the rapid heating capacity of the hot press plate 4-3 shortens the hot pressing preparation time; the S-shaped flow cavity extends the heat exchange time and improves cooling efficiency; the combination of the heat-conducting rod 4-9 and the heat dissipation fins 4-10 enhances heat dissipation and accelerates workpiece shaping; the integrated design of the cooling plate 4-5 and the hot press plate 4-3 seamlessly connects the hot pressing and cooling processes, shortening the processing cycle. This component achieves efficient forming and rapid curing of brake pads through the synergistic effect of hot pressing and cooling, ensuring stable product quality.

[0026] For example, such as Figure 1 As shown, the support disk 3-4 rotates at a fixed angle of 180° each time.

[0027] In some examples, the support plate 3-4 rotates at a fixed angle of 180° each time, enabling precise station switching. This allows the brake pads, after hot pressing, to quickly move from the hot pressing position to the cooling position, while unprocessed blanks are pushed from the feed chute 3-1 to the hot pressing position, creating a continuous production rhythm. The fixed-angle rotation ensures accurate position switching each time, avoiding positioning deviations that could affect the hot pressing and cooling effects, and improving the stability and efficiency of equipment operation.

[0028] For example, such as Figure 2 As shown, the bottom surface of the hot press plate 4-3 and the bottom surface of the cooling plate 4-5 are at the same horizontal level.

[0029] In some examples, the bottom surface of the hot press plate 4-3 and the bottom surface of the cooling plate 4-5 are at the same horizontal level, ensuring consistent contact with the workpiece during processing. During hot pressing, the hot press plate 4-3 makes uniform contact with the workpiece, and during cooling, the cooling plate 4-5 also adheres tightly to the workpiece surface, avoiding localized pressure or uneven heat dissipation due to height differences. This design allows for more uniform conduction of pressure during hot pressing and heat during cooling, ensuring the stability of brake pad molding quality and cooling effect.

[0030] In actual use: the brake pad blank is placed into the feed trough 3-1, the moving frame 3-7 pushes the pusher plate 3-8 to push it through the circular groove 3-5 to the support plate 3-4, the telescopic hydraulic cylinder 4-1 pushes the forming plate 4-2 down, the hot press plate 4-3 heats and presses the blank to complete the hot pressing, then the support plate 3-4 rotates 180° to move the hot-pressed workpiece to the bottom of the cooling plate 4-5, the coolant in the cooling box 4-6 circulates along the S-shaped flow cavity, and dissipates heat quickly through the heat conduction rod 4-9 and the heat dissipation fins 4-10. After cooling is completed, the pusher plate 3-8 of the discharge trough 3-2 pushes the workpiece to the discharge trough 3-2. The whole process realizes continuous operation of hot pressing and cooling without manual transfer.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A hot press for brake pad production, characterized in that, include: A platform (1) and a portal frame (2), wherein the portal frame (2) is fixed on the platform (1); Workpiece switching assembly (3) is mounted on the stand (1); A hot-press cooling assembly is mounted on the portal frame (2); The workpiece switching assembly (3) includes a feed trough (3-1) and a discharge trough (3-2). The feed trough (3-1) and the discharge trough (3-2) are opened at both ends of the surface of the frame (1). The feed trough (3-1) and the discharge trough (3-2) are located on both sides of the gantry frame (2). A circular opening (3-3) is opened on the surface of the frame (1). A support plate (3-4) is rotatably connected inside the circular opening (3-3).

2. The hot press for brake pad production according to claim 1, characterized in that, The support plate (3-4) is driven to rotate by electricity. The surface of the frame (1) is provided with a circular groove (3-5). The circular groove (3-5) is connected to the feed groove (3-1) and the discharge groove (3-2) respectively. The frame (1) is provided with transmission grooves (3-6) on both sides.

3. A hot press for brake pad production according to claim 2, characterized in that, Each of the transmission grooves (3-6) is connected to a movable frame (3-7) via a horizontal linear drive. One end of the movable frame (3-7) extends to the surface of the platform (1). Each of the movable frames (3-7) is provided with a pusher plate (3-8) at one end. The pusher plate (3-8) is located in the feed groove (3-1) and the discharge groove (3-2) respectively.

4. A hot press for brake pad production according to claim 1, characterized in that, The hot pressing assembly (4) includes a pair of telescopic hydraulic cylinders (4-1), which are vertically mounted on the top of the gantry frame (2). The output end of the telescopic hydraulic cylinder (4-1) is connected to a forming plate (4-2), and a hot pressing plate (4-3) is provided inside the bottom of the forming plate (4-2).

5. A hot press for brake pad production according to claim 4, characterized in that, The forming plate (4-2) has a rectangular opening (4-4) on its surface. A cooling plate (4-5) is provided inside the rectangular opening (4-4). A cooling box (4-6) is installed on the upper surface of the cooling plate (4-5). Several baffle plates (4-7) are provided inside the cooling box (4-6).

6. A hot press for brake pad production according to claim 5, characterized in that, The baffle plates (4-7) are arranged alternately on the left and right sides. The cooling box (4-6) forms an S-shaped flow cavity through the baffle plates (4-7). Connecting pipes (4-8) are provided on both sides of the cooling box (4-6). Several heat-conducting rods (4-9) are provided inside the cooling box (4-6). Heat dissipation fins (4-10) are provided on the top of the cooling box (4-6). The heat dissipation fins (4-10) are connected to the heat-conducting rods (4-9).

7. A hot press for brake pad production according to claim 1, characterized in that, The support plate (3-4) rotates at a fixed angle of 180° each time.

8. A hot press for brake pad production according to claim 5, characterized in that, The bottom surface of the hot press plate (4-3) and the bottom surface of the cooling plate (4-5) are at the same horizontal level.

Images