A brake arm machining system and method thereof

Abstract

The application belongs to the technical field of die casting equipment, and particularly relates to a brake rocker arm processing system and a method thereof. The processing system comprises a die casting machine and a smelting furnace, and the smelting furnace provides the die casting machine with liquid metal. The die casting machine comprises a rack, a pressure injection mechanism, a feeding hopper, a driving mechanism and a locking mechanism. The rack is provided with a fixed mold plate and a movable mold plate, the fixed mold plate is provided with a cavity, and the movable mold plate is provided with a core. The pressure injection mechanism injects the liquid metal into the cavity through a feeding cylinder and a pressure injection punch. The feeding hopper supplies the liquid metal to the feeding cylinder through a bottom feeding pipe and an adjusting assembly. The opening and closing assembly of the feeding cylinder and the adjusting assembly are linked with the feeding hopper. The driving mechanism drives the feeding hopper to ascend and descend and feeds back when it fails. The locking mechanism locks or unlocks the ascending and descending of the feeding hopper according to the amount of the liquid metal in the feeding hopper. Through the locking mechanism and the driving mechanism, the amount of the liquid metal is prevented from being too small, and the liquid metal is fed back and supplemented when the amount is too small, so that the amount of the liquid metal is ensured to be appropriate, and the situation that the amount of the liquid metal is too large due to human factors is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of die casting equipment, and particularly relates to a brake rocker arm processing system and a method thereof. BACKGROUND

[0002] The brake rocker arm is a key transmission component in the brake system of vehicles such as automobiles and motorcycles. Its core function is to amplify the force exerted by the driver on the brake pedal through the principle of leverage and transmit it to the brake pull rod or brake master cylinder, ultimately driving the brake actuator (such as brake pads, brake pumps) to achieve vehicle deceleration or parking.

[0003] Traditional brake rocker arms, such as those made of aluminum alloy, are usually cast using the die casting process. During the die casting process, a manual or mechanical hand is often used to operate a ladle to scoop up molten metal liquid from the smelting furnace and introduce it into the injection device for injection molding. However, when the manual or mechanical hand scoops up the molten metal liquid, it is affected by human factors and the height of the metal liquid in the smelting furnace, which can lead to insufficient metal liquid being scooped up at one time, resulting in surface quality or porosity defects during die casting, affecting product precision, and not only affecting production efficiency, but also increasing energy consumption. To avoid this situation, sufficient metal liquid needs to be ensured each time, which can easily lead to an excess, and in addition, the addition of metal liquid during die casting usually needs to be more than the standard amount, resulting in an excessive increase in excess material, damaging the mold, and increasing the energy consumption for subsequent excess material processing. SUMMARY

[0004] The purpose of the present application is to solve the above-mentioned technical problems, and to provide a brake rocker arm processing system and method, which can avoid the addition of too little or too much metal liquid during die casting of the brake rocker arm, and avoid the increase in energy consumption for subsequent waste and excess processing.

[0005] Therefore, the present application provides a brake rocker arm processing system, which comprises a die casting machine and a smelting furnace, and the smelting furnace is used to provide metal liquid for the die casting machine, and the die casting machine comprises:

[0006] A rack is provided with a fixed mold plate and a movable mold plate, and a mold cavity for forming a brake rocker arm is formed on the fixed mold plate, and a mold core for forming a brake rocker arm is provided on the movable mold plate;

[0007] A pressure injection mechanism is installed on the side of the rack, and comprises a feeding cylinder, a pressure injection punch and a driving device, and is used to inject metal liquid into the mold cavity for forming;

[0008] A feeding hopper is installed above the pressure injection mechanism, and a feeding pipe and an adjusting assembly for opening and closing the feeding pipe are provided at the bottom, and are used to guide the metal liquid into the feeding cylinder;

[0009] The driving mechanism is installed on the side of the frame and is used to drive the feeding hopper to lift and to feed back when it cannot be driven.

[0010] The locking mechanism is installed on the side of the frame and is used to lock and unlock the lifting of the feeding hopper according to the amount of molten metal in the feeding hopper.

[0011] The feeding barrel is provided with a feeding port, and a switch assembly for opening and closing the feeding port is installed at the feeding port, and the adjusting assembly and the switch assembly are linked with the lifting of the feeding hopper.

[0012] In the above technical solution, further, the locking mechanism comprises:

[0013] The outer cylinder is sleeved on the feeding hopper and is connected to the output end of the driving mechanism, and is provided with a plurality of limiting columns and a plurality of trigger rods along the radial circumference;

[0014] The first spring is installed in the outer cylinder and is used for resetting the feeding hopper;

[0015] The linkage is installed on the outer cylinder and is used for the reverse linkage of the trigger rod and the limiting column along the radial surface of the outer cylinder, and a second spring for resetting is sleeved on the limiting column;

[0016] The locking ring is installed on the side of the frame and is located below the limiting column and is used to limit the downward movement of the outer cylinder;

[0017] When the feeding hopper is lowered, the trigger rod is pushed to make the limiting column close to the inside of the outer cylinder, and the locking between the limiting column and the locking ring is released.

[0018] In the above technical solution, further, the linkage comprises:

[0019] The mounting plate is installed on the inner wall of the outer cylinder, and the outer cylinder is provided with a first mounting hole for mounting the limiting column and a second mounting hole for mounting the trigger rod at the mounting plate;

[0020] The gear is installed on the mounting plate, and the limiting column is provided with a first tooth that engages with the gear, and the trigger rod is provided with a second tooth that engages with the gear;

[0021] The mounting plate is provided with a through hole matched with the limiting column and a groove matched with the trigger rod.

[0022] In the above technical solution, further:

[0023] The inner wall of the groove is provided with a limiting plate, and the trigger rod is provided with a sliding slot matched with the limiting plate;

[0024] The locking mechanism further comprises a limiting ring installed on the inner wall of the outer cylinder and supported by the mounting plate, and is used to limit the lowest descending height of the feeding hopper.

[0025] The end of the trigger lever close to the feeding hopper is provided with a guide inclined plate, and the bottom of the feeding hopper is provided with a driving part matched with the guide inclined plate.

[0026] In the above technical solution, further:

[0027] A third mounting hole corresponding to the limiting column is formed in the inner wall of the locking ring, and a third spring and a sliding block sliding along the third mounting hole are arranged in the third mounting hole.

[0028] The end of the sliding block extending out of the third mounting hole is provided with an inclined surface.

[0029] In the above technical solution, further:

[0030] The feeding cylinder is arranged at the feeding port, and the switch assembly includes an elastic flap arranged on the feeding cylinder, the elastic flap includes a connecting portion, a bending portion and a plurality of inclined portions for closing the feeding port, and a heat insulation layer is arranged on the surface of the inclined portion.

[0031] In the above technical solution, further:

[0032] The bottom end of the feeding pipe extends out of the outer cylinder body, and a first annular protrusion is arranged at the end portion.

[0033] The adjusting assembly includes a flow guide pipe slidingly connected in the feeding pipe and extending out of the outer cylinder body, a cover is formed at the top of the flow guide pipe for plugging the top of the feeding pipe, and a guide hole is formed in the radial direction.

[0034] The bottom end of the flow guide pipe is provided with a second annular protrusion, and a fourth spring is arranged between the first annular protrusion and the second annular protrusion.

[0035] In the above technical solution, further, the driving mechanism includes:

[0036] A support is arranged on the side surface of the rack.

[0037] A screw rod transmission assembly is arranged on the support, and includes a screw rod and a connecting frame arranged at the output end for mounting the outer cylinder body.

[0038] A driving motor is arranged on the support, and is used to drive the screw rod to rotate to drive the connecting frame to ascend and descend.

[0039] A connecting piece is arranged on the support, and is used to connect and disconnect the output end of the driving motor and the screw rod.

[0040] The connecting piece includes an overload protection assembly, and is used to disconnect the connection between the output end of the driving motor and the screw rod when the locking mechanism is not disconnected.

[0041] In the above technical solution, further, the overload protection assembly comprises:

[0042] The shell is mounted on the support and internally provided with an annular support frame, and a plurality of first conical holes are circumferentially formed on the support frame;

[0043] The metal sheet is annularly mounted in the shell and provided with second conical holes corresponding to the first conical holes;

[0044] The ball is mounted between the support frame and the metal sheet, and extends out of the surface of the support frame on one side, and the metal sheet is pushed by the fifth spring to limit the ball from leaving the support frame;

[0045] The inner cylinder is connected in the shell and provided with a plurality of limiting protrusions at one axial end embedded between every two adjacent balls;

[0046] The planetary gear set is mounted in the inner cylinder and connected to the output shaft of the driving motor and the lead screw at two ends, respectively;

[0047] The inner wall of the inner cylinder is provided with an annular rack engaged with the planetary gear set, and the metal sheet is provided with a trigger column on the side away from the ball.

[0048] The application provides a method for processing a brake rocker arm system, characterized by comprising the following steps:

[0049] S1: The system is started, and an appropriate amount of molten metal is scooped up from a smelting furnace by a manual or mechanical hand and moved to above the feed hopper to pour into the feed hopper;

[0050] S2: The feed hopper increases in mass due to the pouring of the molten metal and compresses the first spring, and in the process of moving downward, the trigger lever is moved by the driving part to drive the limiting rod to retract into the outer cylinder;

[0051] S3: According to different pouring amounts of molten metal, whether to prompt to supplement liquid:

[0052] ①: When the amount of poured molten metal is insufficient, the feed hopper will not move far enough, so that the limiting rod does not retract into the outer cylinder, at this time the driving motor rotates to trigger the overload protection assembly, the limiting protrusion pushes the ball to slip, and the metal sheet is in contact with the trigger column to trigger, and feedback is performed to supplement liquid, and S3 is repeated;

[0053] ②: When the amount of poured molten metal is sufficient, the feed hopper moves downward to push the trigger lever to make the limiting rod retract into the outer cylinder, at this time the driving motor drives the lead screw to rotate, and the feed hopper moves downward, and S4 is entered;

[0054] S4: The second annular protrusion on the feed pipe contacts the elastic lobe, and in the process of continuous downward movement, the fourth spring is compressed, the first spring is reset, and the elastic lobe is opened;

[0055] S5: With the guide pipe moving up in the feeding pipe and extending into the feeding hopper, the molten metal flows into the feeding cylinder through the introduction hole, the guide pipe and the feeding cylinder;

[0056] S6: After the molten metal is added, the driving motor drives the screw rod to rotate, and the feeding hopper moves up, and the elastic leaf is closed again;

[0057] S7: The driving device drives the injection punch to inject the molten metal into the mold cavity to form the brake arm.

[0058] The beneficial effects of the present application are:

[0059] 1. By setting the locking mechanism and the driving mechanism, when the molten metal in the feeding hopper is insufficient, the locking mechanism locks the lifting of the feeding hopper, avoiding opening the injection when the molten metal is insufficient, and when the feeding hopper cannot be driven, the driving mechanism feeds back, and the liquid is added by manual or mechanical hand, ensuring the opening of the locking mechanism and the appropriate amount of molten metal, while avoiding excessive feeding of molten metal caused by human factors, effectively ensuring product quality and avoiding increased energy consumption during subsequent excess material processing.

[0060] 2. At the same time, the feeding hopper is adjusted by the adjusting assembly to ensure that the molten metal does not flow out of the feeding hopper during feeding, and the switch assembly can avoid the splashing of molten metal during injection.

[0061] 3. The locking mechanism is triggered by the downward movement of the feeding hopper due to the addition of molten metal to unlock the limiting rod, so as to trigger the unlocking of the locking mechanism based on the gravity of the molten metal, which can directly reflect the molten metal in the feeding hopper, and can avoid using sensors and other devices to avoid failure and scrap of the sensor in high temperature environment.

[0062] 4. The overload protection assembly in the driving motor can effectively ensure that the output end of the driving motor does not jam when the driving motor is driven under the locking of the locking mechanism, avoiding damage to the driving motor, and also enabling the feedback to be triggered by the contact conduction of the metal sheet and the trigger column when the overload protection assembly is effective, so as to timely understand whether the liquid needs to be supplemented, ensure the production efficiency, and also can set the detection unit based on the conduction current away from the high temperature environment. DETAILED DESCRIPTION

[0063] Figure 1 is a structural schematic view of the die casting machine of the present application;

[0064] Figure 2 is a side view of the die casting machine of the present application;

[0065] Figure 3 is a sectional view of the present application Figure 2 A-A is a partial sectional view of the present application;

[0066] Figure 4 is a magnified view of B in the present application Figure 3

[0067] Figure 5 is a magnified view of C in the present application Figure 4

[0068] Figure 6 is a sectional view of D-D in the present application Figure 3

[0069] Figure 7 is a magnified view of E in the present application Figure 6

[0070] Figure 8 is an exploded view of the connecting piece of the present application

[0071] The reference signs in the drawing are as follows: 1, frame; 2, fixed mold plate; 3, movable mold plate; 4, cavity; 5, core; 6, injection mechanism; 60, feeding cylinder; 61, injection punch; 62, feeding port; 63, feeding cylinder; 7, feeding hopper; 70, driving part; 8, driving mechanism; 80, support; 81, screw transmission assembly; 82, connecting frame; 83, driving motor; 84, overload protection assembly; 840, housing; 841, support frame; 842, first conical hole; 843, metal sheet; 844, second conical hole; 845, ball; 846, fifth spring; 847, inner cylinder body; 848, limiting protrusion; 849, planetary gear set; 85, annular rack; 86, triggering column; 9, locking mechanism; 90, outer cylinder body; 91, limiting column; 92, triggering lever; 93, first spring; 94, linkage; 940, mounting plate; 941, first mounting hole; 942, second mounting hole; 943, gear; 944, first tooth; 945, second tooth; 946, through hole; 947, groove; 948, limiting plate; 949, sliding groove; 95, second spring; 96, locking ring; 960, third mounting hole; 961, third spring; 962, sliding block; 97, limiting ring; 98, guide inclined plate; 10, feeding pipe; 11, elastic flap; 110, connecting part; 111, curved part; 112, inclined part; 113, heat insulation layer; 12, first annular protrusion; 13, flow guide pipe; 14, cover; 15, lead-in hole; 16, second annular protrusion; 17, fourth spring. DETAILED DESCRIPTION

[0072] ​​​​The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art are within the scope of protection of the present application, and the size proportions of the various mechanisms in the drawings of the specification are not actual size proportions, and a person of ordinary skill in the art can adopt appropriate size proportions according to actual conditions.

[0073] Embodiment 1

[0074] The embodiment provides a brake arm machining system, comprising a die casting machine and a smelting furnace, and the smelting furnace is used for providing metal liquid for the die casting machine, and the die casting machine comprises:

[0075] A rack 1 is provided with a fixed mold plate 2 and a movable mold plate 3, a cavity 4 for forming a brake arm is formed in the fixed mold plate 2, and a core 5 for forming the brake arm is arranged on the movable mold plate 3;

[0076] A pressing mechanism 6 is arranged on the side of the rack 1 and comprises a feeding cylinder 60, a pressing punch 61 and a driving device, and is used for pressing the metal liquid into the cavity 4 to form;

[0077] A feeding hopper 7 is arranged above the pressing mechanism 6, a feeding pipe 10 and an adjusting assembly for opening and closing the feeding pipe 10 are arranged at the bottom of the feeding hopper 7, and the feeding hopper 7 is used for guiding the metal liquid into the feeding cylinder 60;

[0078] A driving mechanism 8 is arranged on the side of the rack 1 and is used for driving the feeding hopper 7 to ascend and descend, and feedback is performed when the feeding hopper 7 cannot be driven;

[0079] A locking mechanism 9 is arranged on the side of the rack 1 and is used for locking and unlocking the ascending and descending of the feeding hopper 7 according to the amount of the metal liquid in the feeding hopper 7;

[0080] The feeding cylinder 60 is provided with a feeding port 62, and a switch assembly for opening and closing the feeding port 62 is arranged at the feeding port 62, and the adjusting assembly and the switch assembly are linked with the ascending and descending of the feeding hopper;

[0081] Meanwhile, the die casting machine further comprises a heating mechanism and a cooling mechanism for heating and cooling the fixed mold plate 2 and the movable mold plate 3, a top feeding mechanism and a mechanical hand for feeding, and the like, which are all prior art structures of the driving device and the smelting furnace, and can be obtained by a person of ordinary skill in the art from the traditional die casting machine and smelting furnace, and thus will not be described herein;

[0082] In addition, a heat insulation layer 113 is arranged in the feeding hopper 7, which is a conventional arrangement and thus will not be described herein.

[0083] It can be seen from the embodiment that, by setting the locking mechanism 9 and the driving mechanism 8, when the molten metal in the feeding hopper 7 is insufficient, the locking mechanism 9 locks the lifting of the feeding hopper 7 to avoid opening the injection when the molten metal is insufficient, and when the driving mechanism 8 cannot drive the feeding hopper 7, it feeds back to supplement the liquid by manual or mechanical hand to ensure the opening of the locking mechanism 9 and the appropriate amount of molten metal, while avoiding excessive feeding of molten metal caused by human factors, effectively ensuring product quality and avoiding increased energy consumption during subsequent excess material processing.

[0084] At the same time, by adjusting the assembly, it can be ensured that the molten metal does not flow out of the feeding hopper 7 when feeding, and the switch assembly can avoid the splashing of molten metal during injection.

[0085] Embodiment 2

[0086] The embodiment provides a brake rocker arm processing system, in addition to the technical solutions of the above-mentioned embodiments, further having the following technical features, the locking mechanism 9 comprises:

[0087] The outer cylinder 90 is sleeved on the feeding hopper 7 and connected to the output end of the driving mechanism 8, and a plurality of limiting columns 91 and a plurality of trigger rods 92 are arranged along the radial circumference;

[0088] The first spring 93 is installed in the outer cylinder 90 and is used for resetting the feeding hopper 7;

[0089] The linkage 94 is installed on the outer cylinder 90 and is used for reverse linkage of the trigger rod 92 and the limiting column 91 along the radial surface of the outer cylinder 90, and the limiting column 91 is sleeved with the second spring 95 for resetting;

[0090] The locking ring 96 is installed on the side of the rack 1 and located below the limiting column 91, and is used for limiting the downward movement of the outer cylinder 90;

[0091] When the feeding hopper 7 descends, the trigger rod 92 is pushed to make the limiting column 91 close to the inside of the outer cylinder 90, and the locking between the limiting column 91 and the locking ring 96 is released.

[0092] It can be seen from the embodiment that, by triggering the limiting rod unlocking by the downward movement of the feeding hopper 7 due to the addition of the molten metal, the locking mechanism 9 is unlocked based on the gravity of the molten metal, which can directly reflect the molten metal in the feeding hopper 7, and can avoid using sensors and other devices to avoid failure and scrap of the sensor in a high-temperature environment.

[0093] Embodiment 3

[0094] The embodiment provides a brake rocker arm processing system, in addition to the technical solutions of the above-mentioned embodiments, further having the following technical features, the linkage 94 comprises:

[0095] The mounting plate 940 is mounted on the inner wall of the outer cylinder 90, and the outer cylinder 90 is provided with a first mounting hole 941 for mounting the limiting column 91 and a second mounting hole 942 for mounting the trigger lever 92 at the mounting plate 940;

[0096] The gear 943 is mounted on the mounting plate 940, and the limiting column 91 is provided with a first tooth 944 engaged with the gear 943, and the trigger lever 92 is provided with a second tooth 945 engaged with the gear 943;

[0097] The mounting plate 940 is provided with a through hole 946 matched with the limiting column 91 and a groove 947 matched with the trigger lever 92;

[0098] Meanwhile, the mounting plate 940 and the outer cylinder 90 can be fastened by bolts, and the gear 943 is provided with a bearing seat at both axial ends, and the limiting column 91 is provided with a protrusion for abutting against both ends of the second spring 95, respectively;

[0099] In addition, the first tooth 944 and the limiting column 91 and the second tooth 945 and the trigger lever 92 are in an integral structure.

[0100] As can be seen from the embodiment, the installation of the trigger lever 92 and the limiting column 91 and the installation stability of the devices are facilitated by the mounting plate 940, and the linkage between the trigger lever 92 and the limiting column 91 is facilitated by the gear 943, which ensures the stability of the linkage, and when the trigger lever 92 is not reset, the limiting column 91 can always remain in the unlocked state, that is, when the molten metal in the feeding hopper 7 is discharged, the limiting column 91 is always retracted into the outer cylinder 90, which ensures the smooth effect of the driving mechanism 8 driving the lifting, and avoids jamming.

[0101] Embodiment 4:

[0102] The embodiment provides a brake rocker arm processing system, in addition to the technical solutions of the above-mentioned embodiments, further having the following technical features:

[0103] The limiting plate 948 is arranged on the inner wall of the groove 947, and the trigger lever 92 is provided with a sliding groove 949 matched with the limiting plate 948;

[0104] The locking mechanism 9 further comprises a limiting ring 97 mounted on the inner wall of the outer cylinder 90 and supported by the mounting plate 940, and used for limiting the lowest descending height of the feeding hopper 7;

[0105] The end of the trigger lever 92 close to the feeding hopper 7 is provided with a guide inclined plate 98, and the bottom of the feeding hopper 7 is provided with a driving part 70 matched with the guide inclined plate 98;

[0106] Meanwhile, the limiting plate 948 and the inner wall of the groove 947 can adopt an interference fit, the limiting ring 97 and the inner wall of the outer cylinder 90 adopt an interference fit, and the guide inclined plate 98 and the trigger lever 92 adopt an integrated structure.

[0107] It can be seen from the embodiment that the stability of the trigger lever 92 when driven by the driving part 70 of the feeding hopper 7 on one side can be improved by the limiting plate 948 and the sliding groove 949, and the structural strength and stability of the feeding hopper 7 after moving downward can be ensured by the limiting ring 97.

[0108] The guide inclined plate 98 and the feeding hopper 7 limiting part matched therewith are provided, so that the stability of driving the trigger lever 92 in the horizontal direction is improved.

[0109] In addition, a strip-shaped groove matched with the guide inclined plate 98 is further provided on the bottom surface of the limiting ring 97, so that the stability of the trigger lever 92 during movement is further improved.

[0110] Embodiment 5:

[0111] The embodiment provides a brake rocker arm processing system, in addition to the technical solutions of the above-mentioned embodiments, further having the following technical features:

[0112] The inner wall of the locking ring 96 is provided with a third mounting hole 960 corresponding to the limiting column 91, and a third spring 961 and a sliding block 962 sliding along the third mounting hole 960 are arranged in the third mounting hole 960.

[0113] One end of the sliding block 962 extends out of the third mounting hole 960, and the bottom surface of the end extending out of the third mounting hole 960 is provided in an inclined manner.

[0114] It can be seen from the embodiment that the above structure can ensure that the limiting column 91 cooperates with the limiting column 91 to limit the lifting of the outer cylinder 90, and after the molten metal in the feeding hopper 7 is added to the feeding cylinder 60, the feeding hopper 7 will move upward under the action of the first spring 93, and then the limiting column 91 will be ejected under the action of the second spring 95, so that the bottom surface of the end of the sliding block 962 extending out of the third mounting hole 960 is provided in an inclined manner. When the driving mechanism 8 drives the outer cylinder 90 to reset, the sliding block 962 can be abutted to slide into the third mounting hole 960, so that the limiting column 91 moves above the locking ring 96 to be locked, and the resetting is facilitated.

[0115] Embodiment 6:

[0116] The embodiment provides a brake rocker arm processing system, in addition to the technical solutions of the above-mentioned embodiments, further having the following technical features:

[0117] The feeding cylinder 60 is provided with a feeding cylinder 63 at the feeding port 62, and the switch assembly includes an elastic flap 11 sleeved on the feeding cylinder 63, and the elastic flap 11 includes a connecting portion 110, a bending portion 111, and a plurality of inclined portions 112 for closing the feeding port 62, and a heat insulation layer 113 is arranged on the surface of the inclined portion 112;

[0118] The material of the heat insulation layer 113 is selected according to the die casting raw material, which is a conventional selection and will not be repeated here.

[0119] As can be seen from the embodiment, by arranging the elastic flap 11, the bottom end of the feeding pipe 10 can be automatically opened after being lowered, so as to guide the molten metal into the feeding cylinder 60. The elastic gasket is arranged as the connecting portion 110, the bending portion 111 and the inclined portion 112, so as to facilitate the installation of the elastic flap and improve the stability after installation. The connecting portion 110 can be sleeved on the surface of the feeding cylinder 63, so as to improve the convenience and stability of the connection, and avoid the elastic flap being squeezed into the feeding cylinder 60 when the feeding pipe 10 is pressed down.

[0120] The heat insulation layer 113 arranged on the inclined portion 112 can reduce the direct contact of the molten metal with the elastic flap, effectively reduce the influence of the high-temperature molten metal on the elastic flap, and prolong the service life.

[0121] Embodiment 7:

[0122] The embodiment provides a brake arm machining system, which has the following technical features in addition to the technical solutions of the above-mentioned embodiments.

[0123] The bottom end of the feeding pipe 10 extends out of the outer cylinder 90, and is provided with a first annular protrusion 12 at the end portion;

[0124] The adjusting assembly includes a flow guide pipe 13 slidably connected in the feeding pipe 10 and extending out of the outer cylinder 90, and a cover 14 for blocking the top of the feeding pipe 10 is formed at the top of the flow guide pipe 13, and a guide hole 15 is radially formed;

[0125] The bottom end of the flow guide pipe 13 is provided with a second annular protrusion 16, and the fourth spring 17 is arranged between the first annular protrusion 12 and the second annular protrusion 16.

[0126] Meanwhile, the inner wall of the flow guide pipe 13 is also provided with a heat insulation layer 113, and the material thereof is selected according to the die casting raw material, which is a conventional selection and will not be repeated here.

[0127] Furthermore, there is a certain distance between the inlet hole 15 and the cover 14. This distance should be such that the inlet hole 15 does not become connected to the inside of the feed hopper 7 during the downward movement of the first spring 93 and the fourth spring 17. The specific opening distance of the inlet hole 15 is selected and adjusted according to the actual device. This is a conventional selection and will not be elaborated here.

[0128] As can be seen from this embodiment, by setting both the feed pipe 10 and the guide pipe 13 to extend out of the outer cylinder 90, it is convenient to push open the elastic flap 11 when the feed hopper 7 moves down, so as to realize the introduction of molten metal. The arrangement of the first annular protrusion 12, the second annular protrusion 16 and the fourth spring 17 ensures that the guide pipe 13 can slide in the feed pipe 10 and open the communication between the inlet hole 15 and the inside of the feed hopper 7. The fourth spring 17 can ensure that the guide pipe 13 has a certain structural strength after compression, which can not only slide open the communication between the inlet hole 15 and the inside of the feed hopper 7, but also has a certain structural strength to push open the elastic flap 11 after movement, so as to realize the introduction of molten metal into the feed cylinder 60.

[0129] Furthermore, the second annular protrusion 16 can abut against the surface of the heat insulation layer 113 of the inclined part 112. Under the action of the fourth spring 17, it can effectively reduce the overflow of molten metal during introduction, effectively ensure the control of the amount of molten metal introduced, and avoid the impact on the die casting machine environment and product quality caused by insufficient molten metal due to overflow.

[0130] Meanwhile, the first annular protrusion 12 and the feed pipe 10, as well as the second annular protrusion 16 and the guide pipe 13, are all connected by threads. This allows for adjustment of the installation position and facilitates disassembly and replacement of the feed hopper 7.

[0131] Example 8:

[0132] This embodiment provides a braking rocker arm processing system, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the drive mechanism 8 includes:

[0133] Bracket 80 is installed on the side of rack 1;

[0134] The lead screw drive assembly 81 is mounted on the bracket 80 and includes a lead screw, and has a connecting bracket 82 at the output end for mounting the outer cylinder 90;

[0135] A drive motor 83 is mounted on a bracket 80 and is used to drive the lead screw to rotate, thereby raising and lowering the connecting frame 82.

[0136] The connector is mounted on the bracket 80 and is used to connect and disconnect the output end of the drive motor 83 from the lead screw.

[0137] The connector includes an overload protection component 84, which is used to release the connection between the output end of the drive motor 83 and the lead screw when the locking mechanism 9 is not released.

[0138] Meanwhile, the lead screw drive assembly 81 also includes bearing housings and slide rails, etc. The specific structures of the lead screw drive assembly 81 and the drive motor 83 are existing mature technologies, which are known to those skilled in the art from the traditional lead screw drive assembly 81 and drive motor 83, and will not be described in detail here.

[0139] As can be seen from this embodiment, by using a drive motor 83 to drive the lead screw to rotate, the connecting parts can be lifted and lowered, thereby enabling the outer cylinder 90 and the feed hopper 7 to be lifted and lowered. The overload protection component 84 can disconnect the drive motor 83 output end from the lead screw when the locking mechanism 9 is not locked, thereby avoiding damage to the drive motor 83 and extending the service life of the drive motor 83.

[0140] Example 9:

[0141] This embodiment provides a braking rocker arm processing system, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the overload protection component 84 includes:

[0142] The housing 840 is mounted on the bracket 80 and has an annular support frame 841 inside, with a plurality of first conical holes 842 circumferentially opened on the support frame 841.

[0143] The metal sheet 843 is installed in a ring shape inside the housing 840, and has a second conical hole 844 corresponding to the first conical hole 842;

[0144] A ball bearing 845 is installed between a support frame 841 and a metal sheet 843, and extends out of the surface of the support frame 841 on one side. The ball bearing 845 is restricted from leaving the support frame 841 by pushing the metal sheet 843 with a fifth spring 846.

[0145] The inner cylinder 847 is connected inside the shell 840, and one axial end is provided with multiple limiting protrusions 848 that are embedded between two adjacent balls 845.

[0146] Planetary gear set 849 is installed inside inner cylinder 847, and its two ends are respectively connected to the output shaft of drive motor 83 and lead screw;

[0147] The inner wall of the inner cylinder 847 is provided with an annular rack 85 that meshes with the planetary gear set 849, and a trigger post 86 is provided on the side of the metal plate 843 away from the ball 845.

[0148] Meanwhile, the planetary gear set 849 includes a planetary disk. Multiple bearing posts are arranged on the circumference of the planetary disk near the output shaft of the drive motor 83. Bearings and first gears 943 that mesh with the ring rack 85 are sleeved on the bearing posts. The output shaft of the drive motor 83 is provided with second gears 943 that mesh with all the first gears 943. A cylindrical protrusion is provided on the side of the planetary disk near the lead screw. A non-circular countersunk hole is opened axially on the cylindrical protrusion. The end of the lead screw is adapted to the countersunk hole and fits into the countersunk hole.

[0149] Both the metal sheet 843 and the trigger post 86 are made of conductive materials and are electrically connected to the control unit. Specifically, the control unit is used to receive the conduction feedback between the metal sheet 843 and the trigger post 86, and to issue an alarm or drive the robotic arm to scoop up the molten metal again. Its specific structure is existing mature technology, which is known to those skilled in the art from traditional control systems, and will not be described in detail here.

[0150] As can be seen from this embodiment, by adopting the planetary gear set 849, when the load on the screw side is normal, that is, when the locking mechanism 9 is unlocked, the limiting protrusion 848 abuts against the roller, and is insufficient to counteract the fifth spring 846 pushing the ball 845 away. Therefore, the output end of the drive motor 83 drives multiple first gears 943 to revolve around the ring rack 85, so the inner cylinder 847 does not rotate, and the planetary disk rotates, thereby driving the screw to rotate. When the load on the screw side is too large, that is, when the locking mechanism 9 is locked, the screw cannot rotate, which causes the planetary disk to not rotate. Then, under the rotation of the drive motor 83, the first gear 943 rotates on its own axis, avoiding restriction on the rotation of the output end of the drive motor 83, thereby avoiding damage to the drive motor 83 and extending its service life.

[0151] The first conical hole 842 on the support frame 841 and the second conical hole 844 on the metal sheet 843 can improve the installation stability of the ball 845, prevent the ball 845 from falling off, and extend its service life.

[0152] Furthermore, when the metal sheet 843 is pushed open by the ball 845 under the action of the limiting protrusion 848, it intermittently contacts the trigger post 86 for electrical conduction, thereby providing feedback and alarm. This facilitates timely understanding of whether liquid replenishment is needed, ensuring production efficiency. Additionally, the detection unit based on the conduction current can be placed away from high-temperature environments.

[0153] Example 10:

[0154] This embodiment provides a method for braking a rocker arm machining system, including the following steps:

[0155] S1: The system starts, and a suitable amount of molten metal is scooped up from the smelting furnace by a person or a robot and moved to the top of the feed hopper 7 and poured into the feed hopper 7;

[0156] S2: As the molten metal is poured into the feed hopper 7, the mass increases and the first spring 93 is compressed. At the same time, during the downward movement, the drive unit 70 pushes the trigger rod 92 to move, thereby driving the limit rod to retract into the outer cylinder 90.

[0157] S3: Depending on the type of molten metal poured in, should feedback be provided to replenish the liquid?

[0158] ①: When the amount of molten metal poured in is insufficient, the feed hopper 7 will not move down far enough, so that the limit rod will not retract into the outer cylinder 90. At this time, the drive motor 83 will rotate and trigger the overload protection component 84. The limit protrusion 848 will push the ball 845 to slip, and push the metal plate 843 to contact the trigger post 86 to trigger the feedback to replenish the liquid, repeating S3.

[0159] ②: When the amount of molten metal poured in is sufficient, the feed hopper 7 moves down and pushes the trigger rod 92 to make the limit rod retract into the outer cylinder 90. At this time, the drive motor 83 drives the lead screw to rotate and makes the feed hopper 7 move down, entering S4;

[0160] S4: The second annular protrusion 16 on the feed pipe 10 contacts the elastic flap and compresses the fourth spring 17, resets the first spring 93, and opens the elastic flap as it continues to move downward.

[0161] S5: As the guide pipe 13 moves upward in the feed pipe 10 and extends into the feed hopper 7, the molten metal flows into the feed cylinder 60 through the inlet hole 15, the guide pipe 13 and the feed cylinder 63.

[0162] S6: After the molten metal is added, the drive motor 83 drives the lead screw to rotate, causing the feed hopper 7 to move upward and the elastic flaps to close again;

[0163] S7: The drive unit drives the injection punch 61 to inject metal hydraulically into the cavity 4 to form the rocker arm.

[0164] As can be seen from this embodiment, by adopting the above method and using liquid replenishment, on the one hand, the increase in product quality and waste disposal energy consumption caused by insufficient molten metal can be avoided, and on the other hand, it can prevent excessive artificial adjustment (such as increased subjective awareness or setting the robot arm to move down more to increase the amount of molten metal scooped up) to avoid insufficient molten metal, which would lead to an increase in the energy consumption of subsequent waste disposal.

[0165] Furthermore, since only liquid replenishment is used and it is not required every time, the impact on production efficiency is small or negligible, effectively ensuring production efficiency and product quality.

[0166] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A braking rocker arm machining system, comprising a die-casting machine and a melting furnace, wherein the melting furnace is used to supply molten metal to the die-casting machine, characterized in that, The die-casting machine includes: The frame (1) is equipped with a fixed template (2) and a moving template (3), and the fixed template (2) has a cavity (4) for forming the rocker arm, and the moving template (3) has a core (5) for forming the rocker arm. The injection mechanism (6) is installed on the side of the frame (1) and includes a feed cylinder (60), an injection punch (61) and a drive device, and is used to inject metal hydraulically into the cavity (4) for forming; The feed hopper (7) is installed above the injection mechanism (6) and has a feed pipe (10) and an adjustment assembly for opening and closing the feed pipe (10) at the bottom, and is used to introduce molten metal into the feed cylinder (60). The drive mechanism (8) is installed on the side of the frame (1) and is used to drive the feed hopper (7) to lift and lower, and to provide feedback when it cannot be driven. The locking mechanism (9) is installed on the side of the frame (1) and is used to lock and unlock the lifting of the feed hopper (7) according to the amount of molten metal in the feed hopper (7); The feed cylinder (60) is provided with a feed inlet (62), and a switch assembly for opening and closing the feed inlet (62) is installed at the feed inlet (62). The adjustment assembly and the switch assembly are both linked to the lifting and lowering of the feed hopper (7). The locking mechanism (9) includes: The outer cylinder (90) is fitted on the feed hopper (7) and connected to the output end of the drive mechanism (8), and has multiple limit posts (91) and multiple trigger rods (92) arranged along the radial circumference. The first spring (93) is installed inside the outer cylinder (90) and is used for the reset of the feed hopper (7); The linkage (94) is installed on the outer cylinder (90) and is used to trigger the rod (92) and the limiting post (91) to move in opposite directions along the radial surface of the outer cylinder (90). A second spring (95) for resetting is sleeved on the limiting post (91). A locking ring (96) is installed on the side of the frame (1) and located below the limiting post (91), and is used to limit the downward movement of the outer cylinder (90); When the feed hopper (7) descends, it pushes the trigger rod (92) to make the limiting post (91) move closer to the inside of the outer cylinder (90) and release the locking between the limiting post (91) and the locking ring (96); The linkage (94) includes: Mounting plate (940) is installed on the inner wall of outer cylinder (90), and the outer cylinder (90) is provided with a first mounting hole (941) for mounting the limiting post (91) and a second mounting hole (942) for mounting the trigger rod (92) at the mounting plate (940). Gear (943) is mounted on mounting plate (940), and a first tooth (944) meshing with gear (943) is provided on limiting post (91), and a second tooth (945) meshing with gear (943) is provided on trigger rod (92). The mounting plate (940) is provided with a through hole (946) adapted to the limiting post (91) and a groove (947) adapted to the trigger rod (92).

2. The braking rocker arm processing system according to claim 1, characterized in that: The inner wall of the groove (947) is provided with a limiting plate (948), and the trigger rod (92) is provided with a sliding groove (949) that is adapted to the limiting plate (948). The locking mechanism (9) also includes a limiting ring (97) installed on the inner wall of the outer cylinder (90) and supported by a mounting plate (940), and is used to limit the minimum descent height of the feed hopper (7); The trigger rod (92) is provided with a guide plate (98) at one end near the feed hopper (7), and the bottom of the feed hopper (7) is provided with a drive part (70) adapted to the guide plate (98).

3. The braking rocker arm processing system according to claim 1, characterized in that: The inner wall of the locking ring (96) is provided with a third mounting hole (960) corresponding to the limiting post (91), and a third spring (961) and a slider (962) sliding along the third mounting hole (960) are provided in the third mounting hole (960). The slider (962) extends out of a third mounting hole (960) at one end, and the bottom surface of the end extending out of the third mounting hole (960) is set as an inclined surface.

4. The braking rocker arm processing system according to claim 1, characterized in that: The feed cylinder (60) is provided with a feed cylinder (63) at the feed inlet (62), and the switch assembly includes an elastic flap (11) sleeved on the feed cylinder (63), and the elastic flap (11) includes a connecting part (110), a bending part (111) and a plurality of inclined parts (112) that close the feed inlet (62), and a heat insulation layer (113) is provided on the surface of the inclined part (112).

5. The braking rocker arm processing system according to claim 1, characterized in that: The bottom end of the feed pipe (10) extends out of the outer cylinder (90) and is provided with a first annular protrusion (12) at the end. The adjustment assembly includes a guide pipe (13) that is slidably connected inside the feed pipe (10) and extends out of the outer cylinder (90), and a cap (14) for sealing the top of the feed pipe (10) is formed at the top of the guide pipe (13), and an inlet hole (15) is provided radially. The bottom end of the guide tube (13) is provided with a second annular protrusion (16), and a fourth spring (17) is provided between the first annular protrusion (12) and the second annular protrusion (16).

6. The braking rocker arm processing system according to claim 1, characterized in that, The drive mechanism (8) includes: The bracket (80) is installed on the side of the frame (1); The lead screw drive assembly (81) is mounted on the bracket (80) and includes a lead screw, and has a connecting bracket (82) at the output end for mounting the outer cylinder (90). A drive motor (83) is mounted on a bracket (80) and is used to drive the lead screw to rotate so as to lift the connecting frame (82). A connector, mounted on a bracket (80), is used to connect and disconnect the output end of the drive motor (83) from the lead screw; The connector includes an overload protection component (84) and is used to release the connection drive between the output end of the drive motor (83) and the lead screw when the locking mechanism (9) is not released.

7. The braking rocker arm processing system according to claim 6, characterized in that, The overload protection component (84) includes: The housing (840) is mounted on the bracket (80) and has an annular support frame (841) inside, and multiple first conical holes (842) are opened around the support frame (841). A metal sheet (843) is installed in a ring shape inside the housing (840) and has a second conical hole (844) corresponding to the first conical hole (842). A ball (845) is installed between a support frame (841) and a metal sheet (843), and one side extends out of the surface of the support frame (841). The ball (845) is restricted from leaving the support frame (841) by pushing the metal sheet (843) with a fifth spring (846). The inner cylinder (847) is connected inside the shell (840), and one axial end is provided with multiple limiting protrusions (848) that are embedded between two adjacent balls (845); The planetary gear set (849) is installed inside the inner cylinder (847), and its two ends are respectively connected to the output shaft and the lead screw of the drive motor (83); The inner wall of the inner cylinder (847) is provided with an annular rack (85) that meshes with the planetary gear set (849), and a trigger post (86) is provided on the side of the metal plate (843) away from the ball (845).

8. A method for applying the braking rocker arm processing system according to any one of claims 1-7, characterized in that, Includes the following steps: S1: The system starts, and a suitable amount of molten metal is scooped up from the smelting furnace by a person or a robot and moved to the top of the feed hopper (7) and poured into the feed hopper (7). S2: The feed hopper (7) increases in mass due to the pouring of molten metal and compresses the first spring (93). At the same time, during the downward movement, the drive unit (70) pushes the trigger rod (92) to move, thereby driving the limit rod to retract into the outer cylinder (90). S3: Depending on the type of molten metal poured in, should feedback be provided to replenish the liquid? ①: When the amount of molten metal poured in is insufficient, the feed hopper (7) will not move down enough, so that the limit rod will not retract into the outer cylinder (90). At this time, the drive motor (83) will rotate to trigger the overload protection component (84). The limit protrusion (848) will push the ball (845) to slip, and push the metal plate (843) to contact the trigger post (86) to trigger. Feedback will be given to replenish the liquid, and S3 will be repeated. ②: When the amount of molten metal poured in is sufficient, the feed hopper (7) moves down and pushes the trigger rod (92) so that the limit rod retracts into the outer cylinder (90). At this time, the drive motor (83) drives the lead screw to rotate and causes the feed hopper (7) to move down and enter S4; S4: The second annular protrusion (16) on the feed pipe (10) contacts the elastic flap and compresses the fourth spring (17), resets the first spring (93), and opens the elastic flap during continuous downward movement; S5: As the guide pipe (13) moves upward in the feed pipe (10) and extends into the feed hopper (7), the molten metal flows into the feed cylinder (60) through the inlet hole (15), the guide pipe (13) and the feed cylinder (63); S6: After the molten metal is added, the drive motor (83) drives the lead screw to rotate, causing the feed hopper (7) to move upward and the elastic flap to close again; S7: The drive unit drives the injection punch (61) to inject metal hydraulically into the cavity (4) to form the rocker arm.

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