A new type of automatic compression molding machine for friction brake pads

Abstract

This invention discloses a novel automatic compression molding machine for friction brake pads, relating to the field of brake pad production technology. The machine includes a molding body, a mold assembly, a conversion and pushing assembly, a feeding drive assembly, a lower molding assembly, an upper molding assembly, and a heating assembly. The mold assembly includes a heated fabric mold, a heated base material mold, and a separating mold. The molding body is equipped with a feeding platform. The conversion and pushing assembly drives the moving separating mold. The heating assembly heats the upper and lower ends of the separating mold. This invention divides the mold containing the friction material and base material into a heated fabric mold, a heated base material mold, and a separating mold, allowing the friction material and base material to be molded separately. This separates the traditional one-time compression molding process into two areas, improving production efficiency and ensuring the quality of the brake pads without affecting their service life.

Description

Technical Field

[0001] This invention relates to the field of brake pad manufacturing technology, specifically to a novel automatic compression molding machine for friction brake pads. Background Technology

[0002] Friction brake pads are a key component of automotive braking systems. Their main function is to decelerate or stop the vehicle through friction. Friction brake pads are mainly composed of a steel backing plate (steel back), friction material, and heat-insulating adhesive material.

[0003] Currently, the manufacturing process of friction brake pads typically involves using a heated mold to hot-press the friction material under high temperature and pressure, and then pressing or bonding it to a backing plate with a heat-insulating adhesive. There are two main processes for manufacturing friction brake pads:

[0004] The first molding method involves pouring the friction material into the mold and mixing it evenly. Then, the heat-insulating adhesive material, i.e. the base material, is covered on the friction material. Finally, the steel back is fixed on the mold and hot-pressed. The friction material can be directly pressed and fixed on the steel back in one hot-pressing process.

[0005] The second molding method involves pouring the friction material into a mold separately for hot pressing. After the friction material is formed and processed, an adhesive or a pressing method is used to fix the friction material onto the steel back.

[0006] In the hot pressing process of friction brake pads as described above, the first molding method only requires one hot pressing process to complete the production of friction brake pads, which has high production efficiency. However, the disadvantage is that the friction material and the heat insulation adhesive material are hot pressed in the same mold. After the two materials melt, the interface between the friction material and the heat insulation adhesive material will penetrate each other, resulting in an irregular wavy boundary between the friction material and the heat insulation adhesive material. Some of the heat insulation adhesive material will penetrate into the friction material. When friction brake pads are made using this method, when the friction material of the friction brake pad wears down to the position where the heat insulation adhesive material has penetrated, the heat insulation adhesive material at this point will cause the friction performance of the friction brake pad to decrease. Therefore, even if there is still friction material left, for safety reasons, the friction brake pad needs to be replaced in advance. Therefore, the service life of friction brake pads made by this method is relatively low.

[0007] The second hot-pressing method involves separately molding the friction material and then fixing it to the steel backing after hot pressing. While this avoids seepage at the interface between the friction material and the heat-insulating adhesive material, it requires additional equipment or processes, is more time-consuming, and results in higher production costs and lower production efficiency.

[0008] In summary, this invention provides a novel automatic molding machine for friction brake pads that can be formed in a single hot pressing process, and solves the problem of mutual fusion and penetration between the friction material and the heat-insulating adhesive base material during molding. Summary of the Invention

[0009] To address the shortcomings of existing technologies, this invention provides a novel automatic compression molding machine for friction brake pads, which solves the problems.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a novel automatic compression molding machine for friction brake pads, comprising a molding machine body, and further comprising a mold assembly, a conversion and pushing assembly, a feeding drive assembly, a lower molding assembly, an upper molding assembly, and a heating assembly, wherein:

[0011] The mold assembly includes a heated fabric mold, a heated base material mold, and a movable partition mold disposed between the heated fabric mold and the heated base material mold. The heated fabric mold and the heated base material mold are respectively provided with corresponding lower mold cavity and upper mold cavity.

[0012] The molding machine body is equipped with a loading platform, and the loading drive assembly is used to drive the mold assembly to slide back and forth on the loading platform.

[0013] The conversion drive component is used to drive the separating mold to move between the heated fabric mold and the heated base material mold;

[0014] The lower molding assembly and the upper molding assembly are used to press and shape the friction material and the base material in the heated fabric mold and the heated base material mold, respectively.

[0015] The heating component heats the upper and lower ends of the separating mold, and is used to heat the materials inside the heating fabric mold and the heating base material mold.

[0016] Furthermore, the steel back is placed at the upper end of the upper mold cavity. The separating mold is provided with multiple connecting mold cavities. The movable separating mold is used to separate and connect the lower mold cavity and the upper mold cavity of the heating fabric mold and the heating base material mold.

[0017] Furthermore, the conversion drive assembly includes electric push rods symmetrically installed at both ends of the molding machine body. The output ends of the electric push rods all face the mold assembly direction. The output rods of the electric push rods pass through the molding machine body and extend to the side end of the separating mold, and are fixed with a slidable movable frame. The electric push rods drive the movable frame to move, thereby pushing the separating mold. The electric push rods on both sides can adjust the position of the separating mold through two movable frames located on the left and right sides of the separating mold. During the hot pressing stage, the separating template on the separating mold is separated from the upper mold cavity and the lower mold cavity. During the molding and merging stage, the connecting mold cavity on the separating mold is connected to the upper mold cavity and the lower mold cavity, so that the friction material in the lower mold cavity can enter the upper mold cavity for connection. The movable frames are located on both sides of the separating template and are horizontally corresponding. The separating mold is fixed with a separating template penetrating the separating mold at the side end of the connecting mold cavity. The upper mold cavity and the lower mold cavity both cooperate with the separating template.

[0018] As an optional embodiment of the present invention, the heating assembly includes a heating chamber disposed within a partition template, wherein a heat insulation plate is installed inside the heating chamber to divide the heating chamber into upper and lower layers, and electric heating wires for heating the partition template are respectively installed on the upper and lower sides of the heat insulation plate inside the heating chamber.

[0019] When the partition template isolates the upper and lower mold cavities, the electric heating wire located in the heating chamber heats the partition template, thereby separating the friction material and the base material in the upper and lower mold cavities. This heats the friction material and the base material, increasing their heating area and thus improving their heating efficiency.

[0020] As an optional embodiment of the present invention, based on the improvement of heating temperature uniformity, the heating component includes a heat exchange chamber disposed within a partition template. The partition template is fixed with a heat medium inlet pipe and a heat medium circulation pipe. The heat exchange chamber is connected to the heat medium inlet pipe and the heat medium is transported into the heat exchange chamber. The heat medium circulation pipe is connected to the heat exchange chamber and the heat medium is discharged from the partition template for circulation.

[0021] The overall temperature of the hot oil is uniform. In the heat exchange chamber, the temperature of the hot oil can be evenly transferred to the partition template to heat the friction material and base material in the upper and lower mold cavities. There will be no large temperature difference at the contact points between the upper and lower sides of the partition template and the friction material and base material.

[0022] Furthermore, the heat exchange chamber is equipped with an insulation board that divides the heat exchange process into upper and lower layers. There are two heat medium circulation pipes arranged vertically within the partition template. There are also multiple heat medium inlet pipes arranged vertically. The upper and lower heat medium inlet pipes connect the upper and lower heat exchange chambers respectively. The last heat exchange chamber connected is connected to the corresponding upper and lower heat medium circulation pipe.

[0023] The entry and exit of hot oil in the upper and lower heat exchange chambers are carried out independently. The temperature of the hot oil in the upper and lower heat exchange chambers is different and can be independently controlled. After the hot oil enters the corresponding heat exchange chamber from the heat medium inlet pipe and exchanges heat in the heat exchange chamber of the heating template, it is discharged from the heat medium circulation pipe and circulated back to the external heating equipment for circulation.

[0024] Furthermore, the lower molding assembly and the upper molding assembly each include a first hydraulic cylinder fixed to the bottom of the molding machine body and a second hydraulic cylinder fixed to the top of the molding machine body via a mounting platform. The output ends of the first hydraulic cylinder and the second hydraulic cylinder are respectively fixed with a movable platform and a pressing platform. The upper end of the pressing platform is fixedly connected to the output end of the second hydraulic cylinder via a transmission plate. Multiple rectangularly distributed positioning columns are installed inside the molding machine body. The movable platform and the transmission plate are both movably connected to the positioning columns. Multiple pressing molds that are movably connected to and fit into the lower mold cavity are installed on the top of the movable platform. The pressing platform cooperates with the upper mold cavity.

[0025] The first hydraulic cylinder drives multiple pressing molds to insert into the lower mold cavity via the movable table, and performs hot pressing on the friction material in the lower mold cavity. The friction material in the lower mold cavity is pressed by the pressing mold with the separating template on the separating mold as the base. The second hydraulic cylinder drives the pressing table via the transmission plate to press the steel back onto the base material in the upper mold cavity.

[0026] Furthermore, the upper end of the heating base mold is provided with a steel back groove surrounding the upper mold cavity. Multiple positioning pins for positioning and fixing the steel back are installed in the steel back groove. The bottom of the pressing table is provided with multiple steel back slots that are the same shape as the steel back groove and fit together. Multiple positioning holes corresponding to the positioning pins are provided in the steel back slots.

[0027] The steel back slot on the pressing table, together with the steel back groove on the upper mold cavity, and the positioning pin can position and fix the steel back before pressing, so that the steel back is pressed down and connected to the base material.

[0028] Furthermore, the feeding drive assembly includes a feeding cylinder fixed to the rear end of the molding machine body. The output end of the feeding cylinder is equipped with a transmission frame via a telescopic rod. The transmission frame is fixed with a push plate. The heating fabric mold and the heating base material mold are both fixedly connected to the push plate. The push plate has a sliding opening in the middle. A limit slider is installed at the rear end of the separating mold. The limit slider is slidably connected to and cooperates with the sliding opening. The feeding platform extends to the front end of the molding machine body. The heating fabric mold is slidably connected to the feeding platform.

[0029] The space inside the molding machine is narrow. The feeding cylinder pushes the entire mold assembly out of the molding machine body through the telescopic rod, transmission frame and push plate and moves it to the feeding platform at the front of the molding machine body, so that there is enough operating space at the top of the upper mold cavity to pour or place friction material, base material and steel back.

[0030] The present invention has the following beneficial effects:

[0031] 1. This novel automatic compression molding machine for friction brake pads divides the mold containing the friction material and the base material into a heating fabric mold, a heating base material mold, and a separating mold. Before hot pressing, the separating mold separates the heating fabric mold and the heating base material mold, allowing the friction material and the base material to be molded separately. This avoids the risk of mutual penetration between the friction material and the base material during the high temperature and high pressure process. After the friction material is pre-formed, the position of the separating mold is automatically adjusted by the conversion push component to connect the heating fabric mold and the heating base material mold. This allows the friction material in the heating fabric mold to enter the heating base material mold and be pressed together with the base material and the steel backing. This process separates the compression molding process in the traditional one-time compression molding process into two areas, without increasing time costs. The interface between the friction material and the base material in the compressed friction brake pad will not have a wavy pattern of mutual penetration, improving production efficiency and ensuring the quality of the brake pad without affecting its service life.

[0032] 2. This novel automatic friction brake pad molding machine uses a heating component mounted on a dividing mold. The heating component heats both ends of the dividing mold via resistance heating wires. While the dividing mold separates the heated fabric mold and the heated base material mold, the heating component's heating wires heat the dividing mold, allowing it to heat both the fabric and base material within the upper and lower ends of the heated fabric and base material molds. This improves the heating efficiency of the fabric and, consequently, the pressing efficiency of the brake pad.

[0033] 3. This new type of automatic friction brake pad molding machine uses hot oil to heat the mold by setting up a heat medium inlet pipe, a heat medium outlet pipe, and a heat exchange chamber. The high-temperature hot oil slowly flows in the heat exchange chamber, transferring heat to the mold to heat the friction material and the base material. The hot oil temperature is uniform. Although the heating time is longer than that of traditional electric heating wire, the heating temperature is uniform and there is no problem of local overheating. In addition, the friction brake pad needs to be preheated before hot pressing, and does not need to be heated to a high temperature instantly. Therefore, the heating time of hot oil will not affect the production efficiency, and the uniformity of the mold temperature is guaranteed during heating.

[0034] 4. This new type of automatic friction brake pad molding machine uses a heat insulation plate to divide the partition template into layers, making the upper and lower heating chambers independent and separated. By adjusting the heating wires in the upper and lower heating chambers, the heating temperature at the upper and lower ends of the partition template can be different. Similarly, the heat exchange chamber is divided into upper and lower layers by the heat insulation plate. The upper and lower heat exchange chambers are composed of their own independent heat medium inlet pipes and heat medium outlet pipes. By adjusting the temperature of the heat medium entering the heat exchange chamber, the heating temperature at both ends of the partition template can be different and can be adjusted independently. During the brake pad hot pressing process, the friction material and the base material are adaptively heated separately.

[0035] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0036] Figure 1 This is a three-dimensional structural diagram of the present invention in its working state;

[0037] Figure 2 This is a three-dimensional structural diagram of the material feeding state of the present invention;

[0038] Figure 3 This is a diagram of the internal structure of the present invention;

[0039] Figure 4 This is a schematic diagram of the feeding drive component structure of the present invention;

[0040] Figure 5 This is a schematic diagram showing the positions of the upper and lower molding components of the present invention;

[0041] Figure 6 This is an exploded view of the mold assembly of the present invention;

[0042] Figure 7 This is a schematic diagram of the structure of each mold in the mold assembly of the present invention;

[0043] Figure 8 This is a schematic diagram of the bottom structure of the pressing platform of the present invention;

[0044] Figure 9 This is a schematic diagram of the conversion drive component structure of the present invention;

[0045] Figure 10 This is a cross-sectional view of the heating component in Embodiment 1 of the present invention;

[0046] Figure 11 This is a structural diagram of the partition mold in Embodiment 2 of the present invention;

[0047] Figure 12 This is a structural diagram of the heating component in Embodiment 2 of the present invention.

[0048] In the diagram, 1. Molding machine body; 11. Loading platform; 12. Positioning pin; 13. Positioning plate; 2. Mold assembly; 21. Heated fabric mold; 211. Lower mold cavity; 22. Separating mold; 221. Connecting mold cavity; 222. Separating template; 223. Limiting slider; 23. Heated base material mold; 231. Steel back groove; 232. Positioning pin; 233. Upper mold cavity; 3. Conversion and push assembly; 31. Electric push rod; 32. Movable frame; 4. Loading drive assembly; 41. Loading cylinder; 42. Telescopic rod; 43. 1. Transmission frame; 44. Push plate; 441. Sliding port; 5. Lower molding assembly; 51. First hydraulic cylinder; 52. Movable table; 53. Pressing mold; 6. Upper molding assembly; 61. Second hydraulic cylinder; 62. Mounting platform; 63. Transmission plate; 631. Pressing table; 632. Steel back slot; 633. Positioning hole; 7. Heating assembly; 71. Heating chamber; 72. Electric heating wire; 73. Insulation board; 74. Heat medium inlet pipe; 75. Insulation board; 76. Heat exchange chamber; 77. Heat medium circulation pipe; 8. Steel back body. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention. Example 1

[0051] Please see Figures 1-10 The present invention provides a technical solution: a novel automatic compression molding machine for friction brake pads, comprising a molding machine body 1, and further comprising a mold assembly 2, a conversion and pushing assembly 3, a feeding drive assembly 4, a lower molding assembly 5, an upper molding assembly 6, and a heating assembly 7, wherein:

[0052] Mold assembly 2 includes a heated fabric mold 21, a heated base material mold 23, and a movable partition mold 22 disposed between the heated fabric mold 21 and the heated base material mold 23. The heated fabric mold 21 and the heated base material mold 23 are respectively provided with a lower mold cavity 211 and an upper mold cavity 233.

[0053] The molding machine body 1 is equipped with a loading platform 11, and the loading drive assembly 4 is used to drive the mold assembly 2 to slide back and forth on the loading platform 11.

[0054] The conversion drive component 3 is used to drive the separating mold 22 to move between the heated fabric mold 21 and the heated base material mold 23;

[0055] The lower molding assembly 5 and the upper molding assembly 6 are used to press and shape the friction material and the base material in the heated fabric mold 21 and the heated base material mold 23, respectively.

[0056] The heating component 7 heats the upper and lower ends of the partition mold 22 to heat the materials inside the heating fabric mold 21 and the heating base material mold 23.

[0057] Specifically, the steel backing body 8 is placed on the upper end of the upper mold cavity 233. The separating mold 22 is provided with multiple connecting mold cavities 221. The movable separating mold 22 is used to separate and connect the lower mold cavity 211 and the upper mold cavity 233 of the heating fabric mold 21 and the heating base material mold 23.

[0058] Furthermore, the conversion drive assembly 3 includes electric push rods 31 symmetrically installed at both ends of the molding machine body 1. The output ends of the electric push rods 31 all face the mold assembly 2. The output rods of the electric push rods 31 pass through the molding machine body 1 and extend to the side of the separating mold 22, and are fixed with a slidable movable frame 32. The electric push rods 31 drive the movable frame 32 to move, thereby pushing the separating mold 22. The electric push rods 31 on both sides can adjust the position of the separating mold 22 through the two movable frames 32 located on the left and right sides of the separating mold 22. During the hot pressing stage, the separating mold 22 is pushed... The partition template 222 is separated from the upper mold cavity 233 and the lower mold cavity 211. During the molding and merging stage, the connecting mold cavity 221 on the partition mold 22 connects the upper mold cavity 233 and the lower mold cavity 211, so that the friction material in the lower mold cavity 211 can enter the upper mold cavity 233 for connection. The movable frame 32 is located on both sides of the partition template 222 and is horizontally corresponding. The partition mold 22 is fixed at the side end of the connecting mold cavity with the partition template 222 penetrating the partition mold 22. The upper mold cavity 233 and the lower mold cavity 211 are both matched with the partition template 222.

[0059] Heating devices are provided in the upper mold cavity 233 and lower mold cavity 211 of the heating fabric mold 21 and the heating base material mold 23. The heating devices are based on the heating molds in existing equipment. The only difference from existing equipment is that the heating fabric mold 21 and the heating base material mold 23 in this invention are not integrated but are divided into two independent molds. The heating devices in the molds are conventional technical means, so they will not be described in detail.

[0060] Furthermore, the heating assembly 7 includes a heating chamber 71 disposed within the partition template 222. The heating chamber 71 is equipped with a heat insulation plate 73 that divides the heating chamber 71 into upper and lower layers. The heat insulation plate 73 is a heat insulation material, which makes the temperatures in the upper and lower layers of the heating chamber 71 independent of each other. Electric heating wires 72 for heating the partition template 222 are respectively installed on the upper and lower sides of the heat insulation plate 73 in the heating chamber 71.

[0061] In this embodiment, when the partition template 222 isolates the upper mold cavity 233 and the lower mold cavity 211, the electric heating wire 72 located in the heating chamber 71 heats the partition template 222, so that while the partition template 222 isolates the friction material and the base material in the upper mold cavity 233 and the lower mold cavity 211, it also heats the friction material and the base material, thereby increasing the heated area of ​​the friction material and the base material and increasing the heating efficiency of the friction material and the base material.

[0062] Specifically, the electric heating wire 72 is a coil-type resistance heating wire. The electric heating wires 72 in the upper and lower heating chambers 71 are not subject to unified control. Instead, they are controlled by two independent programmable controllers or integrated control systems, so that the electric heating wires 72 in the upper and lower heating chambers 71 can be adaptively controlled according to the temperature required when the friction material and the base material are hot-pressed.

[0063] Furthermore, the lower molding assembly 5 and the upper molding assembly 6 respectively include a first hydraulic cylinder 51 fixed to the bottom of the molding machine body 1 and a second hydraulic cylinder 61 fixed to the top of the molding machine body 1 via a mounting platform 62. The output ends of the first hydraulic cylinder 51 and the second hydraulic cylinder 61 are respectively fixed with a movable platform 52 and a pressing platform 631. The upper end of the pressing platform 631 is fixedly connected to the output end of the second hydraulic cylinder 61 via a transmission plate 63. Multiple rectangularly distributed positioning columns 12 are installed inside the molding machine body 1. The movable platform 52 and the transmission plate 63 are both movably connected to the positioning columns 12. Multiple pressing molds 53 that are movably connected to and fit into the lower mold cavity 211 are installed on the top of the movable platform 52. The pressing platform 631 cooperates with the upper mold cavity 233.

[0064] The first hydraulic cylinder 51 drives multiple pressing molds 53 to be inserted into the lower mold cavity 211 via the movable table 52, and performs hot pressing operation on the friction material in the lower mold cavity 211. The friction material in the lower mold cavity 211 is pressed by the pressing mold 53 with the separating template 222 on the separating mold 22 as the base. The second hydraulic cylinder 61 drives the pressing table 631 via the transmission plate 63 to press the steel back onto the base material in the upper mold cavity 233.

[0065] Furthermore, the upper end of the heating base mold 23 is provided with a steel back groove 231 surrounding the upper mold cavity 233. Multiple positioning pins 232 for positioning and fixing the steel back are installed in the steel back groove 231. The bottom of the pressing table 631 is provided with multiple steel back slots 632 that are the same shape as the steel back groove 231 and fit together. Multiple positioning holes 633 corresponding to the positioning pins 232 are provided in the steel back slots 632.

[0066] Specifically, the steel backing is generally provided with positioning holes for positioning during pressing. These holes cooperate with the positioning pins 232 in this invention for positioning. The steel backing slots 632 on the pressing table 631 and the steel backing grooves 231 on the upper mold cavity 233, together with the positioning pins 232, can position and fix the steel backing, allowing it to move up and down stably in a small range within the space formed by the steel backing slots 632 and the steel backing grooves 231. This causes the steel backing to be pressed down by the pressing table 631 and connected to the base material.

[0067] Furthermore, the feeding drive assembly 4 includes a feeding cylinder 41 fixed to the rear end of the molding machine body 1. The output end of the feeding cylinder 41 is equipped with a transmission frame 43 via a telescopic rod 42. The transmission frame 43 is fixed with a push plate 44. The heating fabric mold 21 and the heating base material mold 23 are both fixedly connected to the push plate 44. The middle of the push plate 44 is provided with a sliding port 441. The rear end of the separating mold 22 is equipped with a limiting slider 223. The limiting slider 223 is slidably connected to and cooperates with the sliding port 441. The feeding platform 11 extends to the front end of the molding machine body 1. The heating fabric mold 21 is slidably connected to the feeding platform 11.

[0068] Specifically, the space inside the molding machine body 1 is narrow. The feeding cylinder 41 pushes the entire mold assembly 2 out of the molding machine body 1 through the telescopic rod 42, the transmission frame 43 and the push plate 44 and moves it to the feeding platform 11 at the front end of the molding machine body 1, so that there is enough operating space at the upper end of the upper mold cavity 233 to pour or place the friction material, the base material and the steel back.

[0069] The sliding path of the limiting slider 223 within the sliding opening 441 is limited. When the limiting slider 223 slides to the rightmost position within the sliding opening, the connecting cavity 221 on the separating mold 22 is completely aligned with the upper cavity 233 and the lower cavity 211. When the limiting slider 223 slides to the leftmost position within the sliding opening, the separating template 222 on the separating mold 22 is completely aligned with the upper cavity 233 and the lower cavity 211. Example 2

[0070] Based on the improvement in heating temperature uniformity, the heating component 7 in Embodiment 1 above can be replaced. Please refer to the appendix. Figure 11 Appendix Figure 12The heating assembly 7 includes a heat exchange chamber 76 disposed within the partition template 222. The partition template 222 is fixed with a heat medium inlet pipe 74 and a heat medium circulation pipe 77. The heat exchange chamber 76 is connected to the heat medium inlet pipe 74 and the heat medium is transported into the heat exchange chamber 76. The heat medium circulation pipe 77 is connected to the heat exchange chamber 76 and the heat medium is discharged out of the partition template 222 for circulation.

[0071] In this embodiment, the overall temperature of the hot oil is uniform. Within the heat exchange chamber 76, the temperature of the hot oil can be uniformly transferred to the partition template 222 to heat the friction material and base material in the upper mold cavity 233 and the lower mold cavity 211. There will be no large temperature difference at the contact points between the upper and lower sides of the partition template 222 and the friction material and base material. The upper and lower layers are heated by injecting hot oil of the corresponding temperature through the heat medium inlet pipe 74 according to the different required temperatures.

[0072] Furthermore, the heat exchange chamber 76 is equipped with an insulation board 75 that divides the heat exchange process into upper and lower layers. There are two heat medium circulation pipes 77 arranged vertically within the partition template 222. There are also multiple heat medium inlet pipes 74 arranged vertically. After the upper and lower heat medium inlet pipes 74 connect the upper and lower heat exchange chambers 76 respectively, the last heat exchange chamber 76 connected is connected to the corresponding upper and lower heat medium circulation pipes 77.

[0073] Specifically, the entry and exit of hot oil in the upper and lower heat exchange chambers 76 are carried out independently. The temperature of the hot oil in the upper and lower heat exchange chambers 76 is different and can be independently controlled. After the hot oil enters the corresponding heat exchange chamber 76 from the heat medium inlet pipe 74 and exchanges heat in the heat exchange chamber 76 in the heating template, it is discharged from the heat medium circulation pipe 77 and circulated back to the external heating equipment for circulation.

[0074] It should be noted that in the set heat medium inlet pipes 74, each heat medium inlet pipe 74 is connected to no more than two heat exchange chambers 76. When there are extra heat exchange chambers 76 that need to be connected, even if they are heat exchange chambers 76 on the same floor, other heat medium inlet pipes 74 still need to be used or added for connection. If too many heat exchange chambers 76 are connected to the heat medium inlet pipe 74, the heat medium will be heated by heat exchange in the earlier heat exchange chambers 76 and then flow to the later heat exchange chambers 76. This will result in excessive heat loss in the heat medium, which will reduce the heating efficiency. Finally, it will lead to inconsistent temperatures of the partition templates 222 corresponding to different heating chambers 71, resulting in a large temperature difference. The heat medium circulation pipe 77 is not restricted and can connect to all the last heat exchange chambers 76 connected to the heat medium inlet pipes 74 in the same floor.

[0075] The present invention provides a novel automatic friction brake pad molding machine with the following operation and function: Before feeding, the electric push rod 31 is started and controlled. The electric push rod 31 drives the movable frame 32 to move, which in turn pushes the separating mold 22. The electric push rod 31 on both sides can adjust the position of the separating mold 22 through the two movable frames 32 located on the left and right sides of the separating mold 22. By controlling the electric push rod 31, the movable frame 32 pushes the separating mold 22 to the right until the limit slider 223 moves to the rightmost end of the slide. At this time, the connecting mold cavity 221 on the separating mold 22 is completely aligned with the upper mold cavity 233 and the lower mold cavity 211. The feeding cylinder 41 is started. The feeding cylinder 41, through the telescopic rod 42, the transmission frame 43 and the push plate 44, pushes the entire mold assembly. Part 2 is pushed out of the molding machine body 1 and moved to the loading platform 11 at the front end of the molding machine body 1. After spraying the release agent into the upper mold cavity 233, the lower mold cavity 211 and the connecting mold cavity 221, the friction material is poured in from the upper mold cavity 233. The friction material passes through the upper mold cavity 233 and the connecting mold cavity 221 and enters the pressing mold 53 in the lower mold cavity 211. Then, the separating mold 22 is pushed to the left until the limiting slider 223 moves to the leftmost side of the slide. At this time, the upper mold cavity 233 and the lower mold cavity 211 are separated by the separating template 222 on the separating mold 22. At this time, the base material for heat insulation and bonding is poured into the upper mold cavity 233. The base material stays in the upper mold cavity 233 through the separating template 222. Finally, the steel back is placed in the steel back groove 231 through the positioning pin 232 to complete the loading.

[0076] After the feeding cylinder 41 brings the heated fabric mold 21, the heated base material mold 23, and the separating mold 22 back into the molding machine body 1, the first hydraulic cylinder 51 and the second hydraulic cylinder 61 are started. The first hydraulic cylinder 51 drives multiple pressing molds 53 to be inserted upward into the lower mold cavity 211 through the movable table 52 to press and shape the friction material. At the same time, the heating device in the fabric heating mold works to heat the friction material in the lower mold cavity 211. At this time, the electric heating wire 72 in the lower layer of the separating template 222 is started and the heating temperature corresponds to the heating temperature of the fabric heating mold, so as to realize the hot pressing and shaping of the friction material.

[0077] At the same time, the second hydraulic cylinder 61 drives the pressing table 631 to press the steel back downward through the transmission plate 63. During this process, the electric heating wire 72 in the upper layer of the bottom material heating mold and the partition template 222 is activated to hot press the bottom material.

[0078] Finally, after the friction material and the base material are molded, the top of the molded friction material is slightly cooled and solidified by the heating wire in the lower layer of the partition template 222. At the same time, the bottom of the molded base material is melted by the heating wire in the upper layer of the partition template 222. At this time, the movable frame 32 is moved by the electric push rod 31, which pushes the partition mold 22 to the right until the limit slider 223 moves to the rightmost end of the slide. After the connecting mold cavity 221 on the partition mold 22 is completely aligned with the upper mold cavity 233 and the lower mold cavity 211, the first hydraulic cylinder 51 is further activated. When the pressing mold 53 pushes the friction material into the upper mold cavity 233 and presses it on the base material for connection, the friction brake pad is manufactured in one go. Finally, after depressurization and gradual cooling, the friction brake pad is ejected from the mold by the first hydraulic cylinder 51, and the molding of the friction brake pad is completed.

[0079] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0080] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A novel automatic compression molding machine for friction brake pads, comprising a molding machine body (1), characterized in that, It also includes a mold assembly (2), a conversion push assembly (3), a feeding drive assembly (4), a lower molding assembly (5), an upper molding assembly (6), and a heating assembly (7), wherein: The mold assembly (2) includes a heated fabric mold (21), a heated base material mold (23), and a movable partition mold (22) disposed between the heated fabric mold (21) and the heated base material mold (23). The heated fabric mold (21) and the heated base material mold (23) are respectively provided with a lower mold cavity (211) and an upper mold cavity (233). The molding machine body (1) is equipped with a loading platform (11), and the loading drive assembly (4) is used to drive the mold assembly (2) to slide back and forth on the loading platform (11); The conversion drive assembly (3) is used to drive the separating mold (22) to move between the heated fabric mold (21) and the heated base material mold (23); The lower molding assembly (5) and the upper molding assembly (6) are used to press and shape the friction material and the base material in the heated fabric mold (21) and the heated base material mold (23), respectively. The heating component (7) heats the upper and lower ends of the separating mold (22) to heat the materials inside the heating fabric mold (21) and the heating base material mold (23); The steel back body (8) is placed on the upper end of the upper mold cavity (233). The separating mold (22) is provided with multiple connecting mold cavities (221). The movable separating mold (22) is used to separate and connect the lower mold cavity (211) and the upper mold cavity (233) of the heating fabric mold (21) and the heating base material mold (23). The dividing mold (22) is fixed with a dividing template (222) that penetrates the dividing mold (22) at the side end of the connecting mold cavity. The upper mold cavity (233) and the lower mold cavity (211) are both fitted with the dividing template (222). The heating assembly (7) includes a heating chamber (71) or a heat exchange chamber (76) disposed within the partition template (222).

2. The novel automatic compression molding machine for friction brake pads according to claim 1, characterized in that: The conversion push assembly (3) includes electric push rods (31) symmetrically installed at both ends of the molding machine body (1). The output ends of the electric push rods (31) are all facing the mold assembly (2). The output rods of the electric push rods (31) pass through the molding machine body (1) and extend to the side of the dividing mold (22) and are fixed with a sliding movable frame (32). The movable frame (32) is located on both sides of the dividing template (222) and is horizontally corresponding.

3. The novel automatic compression molding machine for friction brake pads according to claim 2, characterized in that: The heating chamber (71) is equipped with a heat insulation plate (73) that divides the heating process into upper and lower layers. Electric heating wires (72) for heating the partition template (222) are installed on the upper and lower sides of the heat insulation plate (73) in the heating chamber (71).

4. The novel automatic compression molding machine for friction brake pads according to claim 2, characterized in that: The partition template (222) is fixed with a heat medium inlet pipe (74) and a heat medium circulation pipe (77). The heat exchange chamber (76) is connected through the heat medium inlet pipe (74) and the heat medium is transported into the heat exchange chamber (76). The heat medium circulation pipe (77) is connected to the heat exchange chamber (76) and the heat medium is discharged out of the partition template (222) for circulation.

5. The novel automatic compression molding machine for friction brake pads according to claim 4, characterized in that: The heat exchange chamber (76) is equipped with an insulation board (75) that divides the heat exchange chamber (76) into upper and lower layers. There are two heat medium circulation pipes (77) arranged vertically within the partition template (222). There are also multiple heat medium inlet pipes (74) arranged vertically. After the upper and lower heat medium inlet pipes (74) connect the upper and lower heat exchange chambers (76) respectively, the last heat exchange chamber (76) connected is connected to the corresponding upper and lower heat medium circulation pipes (77).

6. A novel automatic compression molding machine for friction brake pads according to claim 3 or 5, characterized in that: The lower molding assembly (5) and the upper molding assembly (6) respectively include a first hydraulic cylinder (51) fixed at the bottom of the molding machine body (1) and a second hydraulic cylinder (61) fixed at the top of the molding machine body (1) via a mounting platform (62). The output ends of the first hydraulic cylinder (51) and the second hydraulic cylinder (61) are respectively fixed with a movable platform (52) and a pressing platform (631). The upper end of the pressing platform (631) is fixedly connected to the output end of the second hydraulic cylinder (61) via a transmission plate (63). Multiple rectangularly distributed positioning columns (12) are installed inside the molding machine body (1). The movable platform (52) and the transmission plate (63) are both movably connected to the positioning columns (12). Multiple pressing molds (53) that are movably connected to and fit into the lower mold cavity (211) are installed on the top of the movable platform (52). The pressing platform (631) cooperates with the upper mold cavity (233).

7. The novel automatic compression molding machine for friction brake pads according to claim 6, characterized in that: The upper end of the heating base mold (23) is provided with a steel back groove (231) surrounding the upper mold cavity (233). The steel back groove (231) is provided with a plurality of positioning pins (232) for positioning and fixing the steel back. The bottom of the pressing table (631) is provided with a plurality of steel back slots (632) that are the same shape as the steel back groove (231) and fit together. The steel back slots (632) are provided with a plurality of positioning holes (633) corresponding to the positioning pins (232).

8. The novel automatic compression molding machine for friction brake pads according to claim 7, characterized in that: The feeding drive assembly (4) includes a feeding cylinder (41) fixed at the rear end of the molding machine body (1). The output end of the feeding cylinder (41) is equipped with a transmission frame (43) via a telescopic rod (42). The transmission frame (43) is fixed with a push plate (44). The heated fabric mold (21) and the heated base material mold (23) are both fixedly connected to the push plate (44).

9. A novel automatic compression molding machine for friction brake pads according to claim 8, characterized in that: The push plate (44) has a sliding port (441) in the middle. The separation mold (22) is equipped with a limit slider (223) at the rear end. The limit slider (223) is slidably connected to and cooperates with the sliding port (441). The loading platform (11) extends to the front end of the molding machine body (1). The heating fabric mold (21) is slidably connected to the loading platform (11).

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