Brake drum production system and method

Abstract

The invention discloses a brake drum production system and method, and relates to the technical field of brake drum casting, the brake drum production system comprises a multi-sand storage tank set, a double-effect sand mixing device, a cold core box core making production line, a smelting production line and a molding production line which are arranged in a matched mode, and the sand mixing device comprises a dispersing assembly and a sand mixing assembly; the dispersing assembly comprises a dispersing box body and a pair of dispersing parts, and a first driving part is arranged on one side of the dispersing box body; the dispersing part comprises a dispersing rotating shaft and a plurality of chain type dispersing structures; the sand mixing assembly comprises a sand mixing box body and a pair of sand mixing parts arranged in the sand mixing box body, and a second driving part is arranged on one side of the sand mixing box body; the sand mixing part comprises a sand mixing rotating shaft and a spiral blade, and the problems that when an existing brake drum production system is used, various sand materials cannot be effectively and evenly mixed, a manufactured sand core is prone to collapsing in the follow-up process, the shape of a manufactured brake drum blank cannot meet the requirement, and the rejection rate of the brake drum blank is high are solved.

Description

Technical Field

[0001] The invention relates to the technical field of brake drum casting, and in particular to a brake drum production system and method. Background Art

[0002] Brake drums are mechanical components that are widely used in the braking systems of cars and other vehicles. Brake drums slow or stop the movement of a vehicle by using friction. Brake drums work by the fact that when the driver presses the brake pedal, brake fluid is transferred to the brakes, pushing the brake shoes or pads into contact with the inner wall of the brake drum, thus creating friction that slows or stops the vehicle.

[0003] The current brake drum production system generally adopts the sand casting process, which includes core making, molding, smelting, pouring, cooling and demoulding. Among them, the core making process is one of the important steps to ensure the shape of the brake drum, which generally includes sand material mixing, core making, core assembly, sand core dipping and drying. At present, in the core making process, sand material mixing generally adopts a sand mixer, but the current sand mixer cannot effectively mix multiple sand materials evenly when in use, and the manufactured sand core is prone to collapse in the subsequent process, resulting in the shape of the manufactured brake drum blank not meeting the requirements and a high scrap rate of the brake drum blank.

[0004] In the utility model with application number: CN202121046995.7 and publication number: CN214920230U, a sand mixing device for casting processing is disclosed, including a sand mixing hopper, a cover plate is hinged on one side of the sand mixing hopper, a hinged column is arranged on one side of the sand mixing hopper, a telescopic rod is hinged on the hinged column, the end of the telescopic rod is hinged to the cover plate, a feed hopper is arranged between the cover plates, and the feed hopper is connected to a filter plate through a fastener. Although it can screen the sand when in use, it still cannot effectively mix the multiple sands evenly when mixing multiple sands, and the manufactured sand core is prone to collapse in the subsequent process, resulting in the shape of the manufactured brake drum blank not meeting the requirements and a high scrap rate of the brake drum blank. Summary of the invention

[0005] Based on this, in order to solve the above problems, the present invention proposes a brake drum production system and method, which solves the problem that the current brake drum production system cannot effectively mix a variety of sand materials evenly during use, and the manufactured sand core is prone to collapse in the subsequent process, resulting in the shape of the manufactured brake drum blank not meeting the requirements and the brake drum blank scrap rate is high.

[0006] The technical solution of the present invention is: A brake drum production system includes a plurality of sand storage tanks, a double-effect sand mixing device, a cold core box core production line, a smelting production line and a molding production line, wherein the sand mixing device includes a dispersion component and a sand mixing component; The dispersion assembly includes a dispersion box and a pair of dispersion parts arranged in the dispersion box, the dispersion box is provided with a first feed port and a first discharge port, and one side of the dispersion box is provided with a first driving part that is arranged in cooperation with the pair of dispersion parts; the dispersion part includes a dispersion shaft and a plurality of chain dispersion structures, one end of the plurality of chain dispersion structures is respectively connected to the dispersion shaft, both ends of the dispersion shaft are respectively connected to the dispersion box for rotation, and one end of the dispersion shaft is connected to the first driving part; The sand mixing assembly includes a sand mixing box and a pair of sand mixing parts arranged in the sand mixing box, the sand mixing box is provided with a second feed port and a second discharge port, the second feed port is connected to the first discharge port through a sand material control component, and one side of the sand mixing box is provided with a second driving part which is matched with the pair of sand mixing parts; the sand mixing part includes a sand mixing shaft and a spiral blade arranged on the sand mixing shaft, both ends of the sand mixing shaft are respectively rotatably connected to the sand mixing box, and one end of the sand mixing shaft is connected to the second driving part.

[0007] Preferably, the chain dispersion structure includes a connecting chain and a dispersion hammer, the connecting chain is a combination structure of at least two annular buckles, the annular buckle at one end of the connecting chain is connected to the dispersion hammer, and the annular buckle at the other end of the connecting chain is connected to the dispersion shaft.

[0008] Preferably, one end of the dispersion hammer is provided with a buckling groove and a buckling piece which cooperate with the annular buckle, one end of the annular buckle at one end of the connecting chain can be inserted into the buckling groove and is rotatably connected to the dispersion hammer through the buckling piece, and the buckling piece includes a buckling bolt and a buckling nut.

[0009] Preferably, a mounting part is provided on the dispersion shaft, and the mounting part includes a mounting tube and a plurality of annular plates. The mounting tube is sleeved on the dispersion shaft and fixedly connected to the dispersion shaft. The plurality of annular plates are sleeved on the mounting tube and fixedly connected to the mounting tube. A mounting area is formed between every two adjacent annular plates. The plurality of annular plates are connected by a plurality of connecting rods. One end of the connecting rod passes through the plurality of annular plates and slidably cooperates with the plurality of annular plates. Limiting parts are provided at both ends of the connecting rod, and the limiting parts are cooperated with the annular plates located at both ends of the mounting tube. The annular buckle at the other end of the connecting chain is rotatably connected to one end of the connecting rod located in the mounting area. A limiting ring is provided on one end of the connecting rod located in the mounting area, and one end of the limiting ring is cooperated with the annular buckle.

[0010] Preferably, the limiting member includes a plug-in pin and an annular gasket, and both ends of the connecting rod are provided with pin holes that cooperate with the plug-in pin. The annular gasket can be sleeved on the connecting rod, and the plug-in pin can be inserted into the pin hole and cooperate with the annular gasket to fix the connecting rod on several annular plates.

[0011] Preferably, the first drive unit includes a pair of first drive motors and a pair of transmission structures, wherein one of the first drive motors is connected to a dispersion shaft in one of the dispersion units through a transmission structure for driving the dispersion shaft, and the other first drive motor is connected to a dispersion shaft in another dispersion unit through another transmission structure for driving the dispersion shaft.

[0012] Preferably, the transmission structure includes a driving wheel and a driven wheel, the driving wheel is fixedly arranged on the output shaft of the first driving motor, both ends of the dispersion shaft respectively pass through the dispersion box, and are rotatably connected to the dispersion box through a rotating bearing seat, the end of one end of the dispersion shaft extends to cooperate with the driven wheel, the driven wheel is fixedly arranged at the end of the dispersion shaft, and transmission is realized between the driving wheel and the driven wheel through a plurality of transmission belts.

[0013] Preferably, the sand material control component includes a shell, the top of the shell is connected to the first discharge port, the bottom of the shell is connected to the second discharge port, a sand material flow channel is provided in the shell, both ends of the sand material flow channel are respectively connected to the first discharge port and the second feed port, the end of the shell connected to the first discharge port is a funnel structure, the end of the shell connected to the second feed port is a square tube structure, one end of the direction tube structure of the shell is provided with an insertion groove, the insertion groove is coordinated with the sand material flow channel, a sand material baffle is provided in the insertion groove, one end of the sand material baffle is slidably connected to the insertion groove, and the other end is provided with a connecting plate, a pair of driving members are provided on the shell, the pair of driving members are respectively arranged on both sides of one end of the square tube structure on the shell, and the output end is connected to the connecting plate, which is used to drive the sand material baffle to slide in the insertion groove.

[0014] Preferably, the second driving part includes a second driving motor and a gear box, a first rotating rod and a second rotating rod are provided in the gear box, both ends of the first rotating rod and the second rotating rod respectively pass through the gear box and are rotatably connected to the gear box, an end portion of one end of the first rotating rod forms a first output end, the first output end is fixedly connected to a sand mixing shaft in one of the sand mixing parts, an end portion of the other end of the first rotating rod forms an input end, the input end is fixedly connected to the output shaft of the second driving motor, one end of the second rotating rod forms a second output end, the second output end is located on the same side as the first output end, and the second output end is fixedly connected to the sand mixing shaft in the other sand mixing part, a first gear is fixedly provided on the first rotating rod, a second gear is fixedly provided on the second rotating rod, the first gear and the second gear are arranged in the gear box and mesh with each other.

[0015] A brake drum production method is provided, which completes the production of the brake drum based on the brake drum production system described above.

[0016] Compared with the prior art, the present invention has the following beneficial effects: When the present invention is in use, multiple sand materials in a multi-sand material storage tank group enter the dispersion component of the double-effect sand mixing device, the sand materials enter the dispersion box from the first feed port, are dispersed by a pair of dispersion parts in the dispersion box, and are mixed once at the same time, and then the sand materials after the once mixing can enter the sand mixing component from the first discharge port and the second feed port, and in the sand mixing box, the sand materials are stirred by a pair of sand mixing parts to achieve secondary mixing. Compared with the sand materials mixed by the traditional sand mixer, the sand materials after the secondary mixing have the advantages of more uniform mixing and more distinct particles, which solves the problem that the current brake drum production system cannot effectively mix multiple sand materials evenly when in use, and the manufactured sand core is prone to collapse in the subsequent process, resulting in the shape of the manufactured brake drum blank failing to meet the requirements and a high scrap rate of the brake drum blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of the double-effect sand mixing device described in an embodiment of the present invention; Figure 2 is a schematic diagram of the structure of the dispersed components described in an embodiment of the present invention; Figure 3 is a partial structural schematic diagram of the dispersed components described in an embodiment of the present invention; Figure 4 is a schematic structural diagram of the dispersion unit and the first driving unit described in an embodiment of the present invention; Figure 5 It is described in the embodiment of the present invention Figure 4 A schematic diagram of the local enlarged structure at point A in the middle; Figure 6 Schematic diagram of the structure of the sand material control member described in the embodiment of the present invention; Figure 7 Schematic diagram of the structure of the sand material control component and the sand mixing component described in the embodiment of the present invention; Figure 8 is a schematic structural diagram of a sand mixing assembly described in an embodiment of the present invention; Fig. 9 is a partial structural schematic diagram of the sand mixing assembly described in an embodiment of the present invention; Fig.10 It is described in the embodiment of the present invention Figure 2 A schematic diagram of the local enlarged structure at point A in the middle; Description of reference numerals: 10-dispersion assembly, 100-dispersion box, 101-dispersion part, 102-first feed port, 103-first discharge port, 104-first driving part, 105-dispersion shaft, 106-chain dispersion structure, 107-connecting chain, 108-dispersion hammer, 109-snap-up groove, 110-snap-up piece, 111-mounting piece, 112-mounting tube, 113-annular plate, 114-connecting rod, 115-limiting piece, 116-limiting ring, 117-plug-in pin, 118-annular gasket, 119-pin hole, 120-first driving motor, 121-driving wheel, 122-driven wheel, 123-rotating bearing seat, 124-driving belt, 125-housing, 126- Insertion slot, 127-sand baffle, 128-connecting plate, 129-driving member, 130-mounting frame, 131-box cover, 132-lower box body, 133-closing door, 134-locking member, 135-connecting seat, 136-locking rod, 137-locking sleeve, 138-matching slot, 20-sand mixing assembly, 200-sand mixing box body, 201-sand mixing part, 202-second material feed port, 203-second material discharge port, 204-mounting seat, 205-second driving part, 206-sand mixing shaft, 207-spiral blade, 208-second driving motor, 209-gear box, 210-first rotating rod, 211-second rotating rod, 212-first gear, 213-second gear. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0019] Example: like Figures 1 to 3 , Figures 7 and 8 As shown, this embodiment discloses a brake drum production system, and in particular discloses a double-effect sand mixing device for the brake drum production system, including a plurality of sand storage tanks, a double-effect sand mixing device, a cold box core production line, a smelting production line and a molding production line, wherein the sand mixing device includes a dispersion component 10 and a sand mixing component 20; The dispersion assembly 10 includes a dispersion box 100 and a pair of dispersion parts 101 arranged in the dispersion box 100, the dispersion box 100 is provided with a first feed port 102 and a first discharge port 103, and one side of the dispersion box 100 is provided with a first driving part 104 arranged in cooperation with the pair of dispersion parts 101; the dispersion part 101 includes a dispersion shaft 105 and a plurality of chain dispersion structures 106, one end of the plurality of chain dispersion structures 106 is respectively connected to the dispersion shaft 105, both ends of the dispersion shaft 105 are respectively connected to the dispersion box 100 for rotation, and one end of the dispersion shaft 105 is connected to the first driving part 104; The sand mixing assembly 20 includes a sand mixing box 200 and a pair of sand mixing parts 201 arranged in the sand mixing box 200. The sand mixing box 200 is provided with a second feed port 202 and a second discharge port 203. The second feed port 202 is connected to the first discharge port 103 through a sand material control member. One side of the sand mixing box 200 is provided with a second driving part 205 which is arranged in cooperation with the pair of sand mixing parts 201; the sand mixing part 201 includes a sand mixing shaft 206 and a spiral blade 207 arranged on the sand mixing shaft 206. Both ends of the sand mixing shaft 206 are respectively rotatably connected to the sand mixing box 200, and one end of the sand mixing shaft 206 is connected to the second driving part 205.

[0020] When the present invention is in use, multiple sand materials in the multi-sand material storage tank group enter the dispersion component 10 of the double-effect sand mixing device, and the sand materials enter the dispersion box 100 from the first feed port 102, and are dispersed by a pair of dispersion parts 101 in the dispersion box 100, and are mixed once at the same time. Then, the sand materials after the once mixing can enter the sand mixing component 20 from the first discharge port 103 and the second feed port 202. In the sand mixing box 200, the sand materials are stirred by a pair of sand mixing parts 201 to achieve secondary mixing. Compared with the sand materials mixed by the traditional sand mixer, the sand materials after the secondary mixing have the advantages of more uniform mixing and more distinct particles, which solves the problem that the current brake drum production system cannot effectively mix multiple sand materials evenly when in use, and the manufactured sand core is prone to collapse in the subsequent process, resulting in the shape of the manufactured brake drum blank failing to meet the requirements and a high scrap rate of the brake drum blank.

[0021] Among them, it is further preferred that the first feed port 102 is arranged at the top of the dispersion box 100, the first discharge port 103 is arranged at the bottom of the dispersion box 100, the second feed port 202 is arranged on one side of the top of the sand mixing box 200, and the second discharge port 203 is arranged on one side of the bottom of the sand mixing box 200.

[0022] When in use, the sand can enter the dispersion box 100 from the first feed port 102, and then due to the effect of gravity, can enter the sand mixing box 200 from the first discharge port 103 and the second feed port 202. Then, during the rotation of the spiral blade 207, the sand can be transported from one end of the second feed port 202 of the sand mixing box 200 to one end of the second discharge port 203 of the sand mixing box 200, thereby realizing a double-effect sand mixing device for sand input or output.

[0023] like Figure 2 , Figure 7 As shown, the dispersion box 100 and the first driving unit 104 can be installed through the mounting frame 130 , and the sand mixing box 200 and the second driving unit 205 can be installed through the mounting seat 204 .

[0024] like Figure 2As shown, the dispersion box 100 includes a box cover 131 and a lower box 132. The box cover 131 is detachably connected to the lower box 132. Closed doors 133 are provided on both sides of the lower box 132. One side of the closed door 133 is rotatably connected to the lower box 132, and the other side is connected to the lower box 132 through a pair of locking members 134.

[0025] like Fig.10 As shown, the locking member 134 includes a connection seat 135, a locking rod 136 and a locking sleeve 137. The connection seat 135 is fixedly arranged on the lower box body, one end of the locking rod 136 is rotatably connected to the connection seat 135, and the closed door 133 is provided with a matching groove 138 matched with the locking rod 136. The locking rod 136 can be inserted into the matching groove 138 and locked by the locking sleeve 137. The locking sleeve 137 is provided with a hand-held portion at one end and a threaded connection portion at the other end. One end of the locking sleeve 137 provided with the threaded connection portion can be threadedly connected to the locking rod 136, and the end of the locking sleeve 137 provided with the threaded connection portion can be rotated to contact the closed door 133. The arrangement of the closed door 133 can facilitate the inspection and maintenance of the dispersion unit 101.

[0026] The multi-sand storage tank group can adopt the multi-sand storage tank group in the prior art, which mainly includes an old sand tank for storing old sand, a new sand tank for storing new sand, a resin tank for storing resin particles, a clay tank for storing clay particles and a material unloading device.

[0027] The cold box core making production line can adopt the cold box core making production line in the prior art that can realize the function of the present invention, which mainly includes a core shooting machine, core assembly equipment, dipping and drying equipment. In the cold box core making production line, a variety of sand materials mixed by a double-effect sand mixing device can complete the core making, core assembly, dipping and drying processes, thereby obtaining the sand core required for the subsequent process.

[0028] The smelting production line can adopt a smelting production line in the prior art that can realize the functions of the present invention, which mainly includes a one-to-two medium frequency electric furnace, a spheroidizing ladle, a molten iron transfer ladle and a molten iron transfer ladle conveying equipment. In the smelting production line, the raw materials can be smelted into molten iron, and then transferred to the molding production line through the molten iron transfer ladle and the molten iron transfer ladle conveying equipment.

[0029] The molding production line can adopt the HWS molding production line in the prior art that can realize the functions of the present invention, which mainly includes a box dividing machine, a core setting machine, a mold closing machine, a pouring machine, a cooling track and a demoulding device. In the molding production line, the processes of mold box dividing, sand core positioning and placement, mold closing, raw material molten iron pouring, mold cooling and model demoulding can be completed to obtain a brake drum blank with a gate.

[0030] like Figure 6As shown, in order to facilitate the control of the sand material, this embodiment is improved on the basis of the above embodiment. The difference from the above embodiment is that the sand material control member includes a shell 125, the top of the shell 125 is connected to the first discharge port 103, the bottom of the shell 125 is connected to the second discharge port 203, a sand material flow channel is arranged in the shell 125, and the two ends of the sand material flow channel are respectively connected to the first discharge port 103 and the second feed port 202, the end of the shell 125 connected to the first discharge port 103 is a funnel structure, and the shell 125 connected to the second feed port 202 is a funnel structure. One end is a square tube structure, and one end of the directional tube structure of the shell 125 is provided with an insertion groove 126, and the insertion groove 126 is arranged in cooperation with the sand flow channel. A sand baffle 127 is arranged in the insertion groove 126, and one end of the sand baffle 127 is slidably connected to the insertion groove 126, and the other end is provided with a connecting plate 128. A pair of driving members 129 are provided on the shell 125, and the pair of driving members 129 are respectively arranged on both sides of one end of the square tube structure on the shell 125, and the output end is connected to the connecting plate 128, which is used to drive the sand baffle 127 to slide in the insertion groove 126.

[0031] The pair of driving members 129 may be air cylinders or hydraulic cylinders in the prior art that can realize the functions of the present invention.

[0032] When in use, the connecting plate 128 can be driven by a pair of driving members 129, thereby driving the sand material baffle 127 to slide in the insertion groove 126, so as to achieve the control of the sand material. When the sand material baffle 127 is fully inserted into the insertion groove 126, the connection between the first material outlet 103 and the second material inlet 202 is blocked, and the sand material can only stay in the dispersion box 100. When the sand material baffle 127 moves, the sand material flow rate can be controlled.

[0033] like Figures 4 to 5 As shown, in order to facilitate the dispersion and mixing of various sand materials, this embodiment is improved on the basis of the above embodiment. The difference from the above embodiment is that the chain dispersion structure 106 includes a connecting chain 107 and a dispersion hammer 108, and the connecting chain 107 is a combination structure of at least two annular buckles. The annular buckle at one end of the connecting chain 107 is connected to the dispersion hammer 108, and the annular buckle at the other end of the connecting chain 107 is connected to the dispersion shaft 105.

[0034] When in use, when the dispersion shaft 105 rotates, the connecting chain 107 and the dispersion hammer 108 are stretched straight under the action of centrifugal force, thereby colliding with the various sand materials entering from the first feed port 102, thereby breaking up the various sand materials, thereby achieving dispersion of the various sand materials. While being dispersed, the various sand materials can also be preliminarily mixed, that is, mixed once. This way of breaking up and mixing can make the mixing of the various sand materials more uniform.

[0035] like Figure 5As shown, in order to facilitate the connection between the dispersion hammer 108 and the connecting chain 107, this embodiment is improved on the basis of the above embodiment. The difference from the above embodiment is that one end of the dispersion hammer 108 is provided with a snap-fitting groove 109 and a snap-fitting piece 110 which are arranged to cooperate with the annular buckle. One end of the annular buckle at one end of the connecting chain 107 can be inserted into the snap-fitting groove 109 and is rotatably connected to the dispersion hammer 108 through the snap-fitting piece 110. The snap-fitting piece 110 includes a snap-fitting bolt and a snap-fitting nut.

[0036] When in use, the dispersion hammer 108 can be directly fixed to the annular buckle at one end of the connecting chain 107 by the cooperation of the buckling bolt and the buckling nut.

[0037] like Figures 3 to 5 As shown, in order to facilitate the installation of the chain-type dispersion structure 106, this embodiment is improved on the basis of the above embodiment. The difference from the above embodiment is that a mounting member 111 is provided on the dispersion shaft 105, and the mounting member 111 includes a mounting tube 112 and a plurality of annular plates 113. The mounting tube 112 is sleeved on the dispersion shaft 105 and fixedly connected to the dispersion shaft 105. The plurality of annular plates 113 are sleeved on the mounting tube 112 and fixedly connected to the mounting tube 112. A mounting area is formed between every two adjacent annular plates 113. If The annular plates 113 are connected by a plurality of connecting rods 114, one end of the connecting rod 114 passes through the plurality of annular plates 113 and is slidably matched with the plurality of annular plates 113, both ends of the connecting rod 114 are provided with limit members 115, the limit members 115 are matched with the annular plates 113 located at both ends of the mounting tube 112, the annular buckle at the other end of the connecting chain 107 is rotatably connected with one end of the connecting rod 114 located in the mounting area, a limiting ring 116 is provided on one end of the connecting rod 114 located in the mounting area, one end of the limiting ring 116 is matched with the annular buckle.

[0038] The limiting member 115 includes a plug-in pin 117 and an annular gasket 118. Pin holes 119 that cooperate with the plug-in pin 117 are provided at both ends of the connecting rod 114. The annular gasket 118 can be sleeved on the connecting rod 114. The plug-in pin 117 can be inserted into the pin hole 119 and cooperate with the annular gasket 118 to fix the connecting rod 114 on a plurality of annular plates 113.

[0039] Among them, the chain-type dispersion structure 106 is arranged at intervals along the circumferential direction of the annular plate 113 and along the direction of the connecting rod 114, that is, along the circumferential direction of the annular plate 113, the chain-type dispersion structure 106 needs to be arranged at intervals of one connecting rod 114; in the direction of the connecting rod 114, it needs to be arranged at intervals of one installation area.

[0040] This arrangement can effectively reduce the problems of collision and entanglement between the chain-type dispersion structures 106 when in use. The limiting ring 116 is also provided to prevent the chain-type dispersion structures 106 from moving on the connecting rod 114, and can also effectively reduce the problems of collision and entanglement between the chain-type dispersion structures 106. The connecting rod 114 is fixed between the stopper 115 and the annular plate 113, which can facilitate the installation or removal of the chain-type dispersion structure 106.

[0041] like Figure 4 As shown, in order to facilitate the driving of the dispersion shaft 105, this embodiment is improved on the basis of the above embodiment. The difference from the above embodiment is that the first driving part 104 includes a pair of first driving motors 120 and a pair of transmission structures, one of the first driving motors 120 is connected to the dispersion shaft 105 in one of the dispersion parts 101 through a transmission structure, which is used to drive the dispersion shaft 105, and the other first driving motor 120 is connected to the dispersion shaft 105 in the other dispersion part 101 through another transmission structure, which is used to drive the dispersion shaft 105.

[0042] The transmission structure includes a driving wheel 121 and a driven wheel 122. The driving wheel 121 is fixedly arranged on the output shaft of the first driving motor 120. Both ends of the dispersion shaft 105 respectively pass through the dispersion box 100 and are rotatably connected to the dispersion box 100 through a rotating bearing seat 123. The end of one end of the dispersion shaft 105 extends to cooperate with the driven wheel 122. The driven wheel 122 is fixedly arranged at the end of the dispersion shaft 105. Transmission is realized between the driving wheel 121 and the driven wheel 122 through a plurality of transmission belts 124.

[0043] The first driving motor 120 is a variable frequency motor in the prior art.

[0044] When in use, the dual motors can respectively drive the dispersion shafts 105 in a pair of dispersion parts 101 to rotate, so that the chain dispersion structures 106 in the pair of dispersion parts 101 can better break up the various sand materials, so that the various sand materials can be better mixed.

[0045] like Figure 2 As shown, the mounting frame 130 includes a mounting structure 1 and a mounting structure 2. The mounting structure 1 is used to mount the dispersion box 100, and the mounting structure 1 is arranged in cooperation with one side of the sand mixing box 200; the mounting structure 2 is arranged on one side of the mounting structure 1, and is used to mount the first driving part 104, that is, to mount a pair of first driving motors 120.

[0046] The first mounting structure and the second mounting structure are a combination structure of a plurality of fixing rods, wherein the second mounting structure is provided with a mounting plate, and a pair of first driving motors 120 can be fixedly mounted on the mounting plate.

[0047] A connecting plate is provided on both sides of the dispersion box 100, and the connecting plate is fixedly connected to both sides of the dispersion box 100. A plurality of reinforcing ribs are provided on the top of the connecting plate, and the reinforcing ribs are fixedly connected to the connecting plate and the dispersion box 100. The top of the mounting structure is fixedly connected to the bottom of the connecting plate.

[0048] like Figures 8 to 9 As shown, in order to facilitate driving the sand mixing shaft 206, this embodiment is improved on the basis of the above embodiment. The difference from the above embodiment is that the second driving part 205 includes a second driving motor 208 and a gear box 209. The gear box 209 is provided with a first rotating rod 210 and a second rotating rod 211. Both ends of the first rotating rod 210 and the second rotating rod 211 pass through the gear box 209 respectively and are rotatably connected to the gear box 209. The end of one end of the first rotating rod 210 forms a first output end, and the first output end is connected to the sand mixing shaft in one of the sand mixing parts 201. The shaft 206 is fixedly connected, and the end of the other end of the first rotating rod 210 forms an input end, which is fixedly connected to the output shaft of the second driving motor 208. One end of the second rotating rod 211 forms a second output end, and the second output end is located on the same side as the first output end, and the second output end is fixedly connected to the sand mixing shaft 206 in another sand mixing part 201. A first gear 212 is fixedly provided on the first rotating rod 210, and a second gear 213 is fixedly provided on the second rotating rod 211. The first gear 212 and the second gear 213 are arranged in the gear box 209 and mesh with each other.

[0049] When in use, the first rotating rod 210 can be driven by the second driving motor 208, and the second gear 213 can be driven by the first gear 212, and the second rotating rod 211 can be driven, and the pair of sand mixing parts 201 connected to the first rotating rod 210 and the second rotating rod 211 can be driven to rotate, so that the sand mixing shaft 206 rotates.

[0050] A brake drum production method is provided, which completes the production of the brake drum based on the brake drum production system described above.

[0051] Specifically include: Step S1: sand mixing step and core making step; The multiple sand materials in the multi-sand material storage tank group enter the dispersion component 10 of the double-effect sand mixing device, and are dispersed by a pair of dispersion parts 101 in the dispersion box 100, and are mixed once at the same time; then the sand materials after the once mixing can enter the sand mixing component 20 through the first discharge port 103 and the second feed port 202, and in the sand mixing box 200, the sand materials are stirred by the pair of sand mixing parts 201 to achieve secondary mixing, thereby completing the sand mixing step; After the sand mixing step, the various sand materials enter the cold box core making production line. In the cold box core making production line, the various sand materials complete the core making, core assembly, dipping and drying processes to obtain the sand cores required for the subsequent processes and complete the core making steps; Step S2: smelting step; The raw materials required for the brake drum are melted into the required molten iron through the smelting production line, inoculated in the spheroidizing bag, and then transferred to the molding production line through the molten iron transfer bag and the molten iron transfer bag conveying equipment; Step S3: Modeling step; Through the molding production line, the mold is divided into boxes, the sand core is positioned and placed, the mold is closed, the raw material molten iron is poured, the mold is cooled, and the mold is demoulded, so that the brake drum blank with a gate is obtained; Step S4: rough machining of brake drum blank; The brake drum blank with a gate is sheared off by a hydraulic shearing device, and then the gate position is polished by an angle grinder to make it flat, and then the burrs on the brake drum surface are removed by a shot blasting machine to obtain the brake drum blank; Step S5: finishing the brake drum blank; The brake drum blank obtained in step S4 is subjected to surface grinding, drilling, edge grinding, leveling, cleaning, painting and drying to complete the production of the brake drum.

[0052] The method of the present invention can be used to complete the production of brake drums and improve the yield of brake drums.

[0053] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A brake drum production system, comprising a plurality of sand storage tanks, a double-effect sand mixing device, a cold box core production line, a smelting production line and a molding production line, characterized in that: The sand mixing device comprises a dispersion component (10) and a sand mixing component (20); The dispersion assembly (10) comprises a dispersion box (100) and a pair of dispersion parts (101) arranged in the dispersion box (100); the dispersion box (100) is provided with a first feed port (102) and a first discharge port (103); one side of the dispersion box (100) is provided with a first drive part (104) arranged in cooperation with the pair of dispersion parts (101); the dispersion part (101) comprises a dispersion shaft (105) and a plurality of chain dispersion structures (106); one end of the plurality of chain dispersion structures (106) is respectively connected to the dispersion shaft (105); both ends of the dispersion shaft (105) are respectively rotatably connected to the dispersion box (100); and one end of the dispersion shaft (105) is connected to the first drive part (104); The sand mixing assembly (20) comprises a sand mixing box (200) and a pair of sand mixing parts (201) arranged in the sand mixing box (200); the sand mixing box (200) is provided with a second material inlet (202) and a second material outlet (203); the second material inlet (202) and the first material outlet (103) are connected via a sand material control member; one side of the sand mixing box (200) is provided with a second driving part (205) arranged in cooperation with the pair of sand mixing parts (201); the sand mixing part (201) comprises a sand mixing rotating shaft (206) and a spiral blade (207) arranged on the sand mixing rotating shaft (206); both ends of the sand mixing rotating shaft (206) are respectively rotatably connected to the sand mixing box (200), and one end of the sand mixing rotating shaft (206) is connected to the second driving part (205).

2. A brake drum production system according to claim 1, characterized in that: The chain-type dispersion structure (106) comprises a connecting chain (107) and a dispersion hammer (108). The connecting chain (107) is a structure composed of at least two annular buckles. The annular buckle at one end of the connecting chain (107) is connected to the dispersion hammer (108), and the annular buckle at the other end of the connecting chain (107) is connected to the dispersion rotating shaft (105).

3. A brake drum production system according to claim 2, characterized in that: A buckling groove (109) and a buckling piece (110) are provided at one end of the dispersion hammer (108) and are matched with the annular buckle. One end of the annular buckle at one end of the connecting chain (107) can be inserted into the buckling groove (109) and is rotatably connected to the dispersion hammer (108) via the buckling piece (110). The buckling piece (110) includes a buckling bolt and a buckling nut.

4. A brake drum production system according to claim 3, characterized in that: A mounting member (111) is provided on the dispersion shaft (105), and the mounting member (111) comprises a mounting tube (112) and a plurality of annular plates (113). The mounting tube (112) is sleeved on the dispersion shaft (105) and fixedly connected to the dispersion shaft (105). The plurality of annular plates (113) are sleeved on the mounting tube (112) and fixedly connected to the mounting tube (112). A mounting area is formed between every two adjacent annular plates (113). The plurality of annular plates (113) are connected by a plurality of connecting rods (114). One end of the connecting rod (114) passes through a plurality of annular plates (113) and is slidably matched with the plurality of annular plates (113). Limiting members (115) are provided at both ends of the connecting rod (114). The limiting members (115) are matched with the annular plates (113) located at both ends of the mounting tube (112). The annular buckle at the other end of the connecting chain (107) is rotatably connected with one end of the connecting rod (114) located in the mounting area. A limiting ring (116) is provided on one end of the connecting rod (114) located in the mounting area. One end of the limiting ring (116) is matched with the annular buckle.

5. A brake drum production system according to claim 4, characterized in that: The limiting member (115) comprises a plug-in pin (117) and an annular gasket (118); pin holes (119) cooperating with the plug-in pin (117) are provided at both ends of the connecting rod (114); the annular gasket (118) can be sleeved on the connecting rod (114); the plug-in pin (117) can be inserted into the pin hole (119) and cooperate with the annular gasket (118) to fix the connecting rod (114) on the plurality of annular plates (113).

6. A brake drum production system according to claim 1 or 5, characterized in that: The first driving unit (104) comprises a pair of first driving motors (120) and a pair of transmission structures, wherein one of the first driving motors (120) is connected to a dispersion shaft (105) in one of the dispersion units (101) via a transmission structure, and is used to drive the dispersion shaft (105), and the other first driving motor (120) is connected to a dispersion shaft (105) in another dispersion unit (101) via another transmission structure, and is used to drive the dispersion shaft (105).

7. A brake drum production system according to claim 6, characterized in that: The transmission structure comprises a driving wheel (121) and a driven wheel (122); the driving wheel (121) is fixedly arranged on the output shaft of the first driving motor (120); both ends of the dispersion rotating shaft (105) respectively penetrate the dispersion box (100) and are rotationally connected to the dispersion box (100) via a rotating bearing seat (123); an end of one end of the dispersion rotating shaft (105) extends to cooperate with the driven wheel (122); the driven wheel (122) is fixedly arranged on the end of the dispersion rotating shaft (105); and transmission is achieved between the driving wheel (121) and the driven wheel (122) via a plurality of transmission belts (124).

8. A brake drum production system according to claim 1, characterized in that: The sand material control component comprises a shell (125), the top of the shell (125) is connected to the first material outlet (103), the bottom of the shell (125) is connected to the second material outlet (203), a sand material flow channel is provided in the shell (125), the two ends of the sand material flow channel are respectively connected to the first material outlet (103) and the second material feed port (202), one end of the shell (125) connected to the first material outlet (103) is a funnel structure, the end of the shell (125) connected to the second material feed port (202) is a square tube structure, and one end of the directional tube structure of the shell (125) is provided An insertion groove (126) is provided, the insertion groove (126) is arranged in cooperation with the sand material flow channel, a sand material baffle (127) is arranged in the insertion groove (126), one end of the sand material baffle (127) is slidably connected to the insertion groove (126), and the other end is provided with a connecting plate (128), and a pair of driving members (129) are provided on the housing (125), and the pair of driving members (129) are respectively arranged on both sides of one end of the square tube structure on the housing (125), and the output end is connected to the connecting plate (128) for driving the sand material baffle (127) to slide in the insertion groove (126).

9. A brake drum production system according to claim 1, characterized in that: The second driving part (205) comprises a second driving motor (208) and a gear box (209). A first rotating rod (210) and a second rotating rod (211) are arranged in the gear box (209). Both ends of the first rotating rod (210) and the second rotating rod (211) respectively pass through the gear box (209) and are rotatably connected to the gear box (209). An end of one end of the first rotating rod (210) forms a first output end. The first output end is fixedly connected to a sand mixing shaft (206) in one of the sand mixing parts (201). An end of the other end of the first rotating rod (210) An input end is formed, and the input end is fixedly connected to the output shaft of the second drive motor (208); one end of the second rotating rod (211) forms a second output end, and the second output end is located on the same side as the first output end, and the second output end is fixedly connected to the sand mixing rotating shaft (206) in another sand mixing part (201); a first gear (212) is fixedly provided on the first rotating rod (210), and a second gear (213) is fixedly provided on the second rotating rod (211); the first gear (212) and the second gear (213) are arranged in a gear box (209) and mesh with each other.

10. A method for producing a brake drum, characterized in that: A brake drum production system based on any one of claims 1 to 9 above completes the production of brake drums, specifically comprising: Step S1: sand mixing step and core making step; The multiple types of sand materials in the multiple sand material storage tank group enter the dispersion component (10) of the double-effect sand mixing device, and are dispersed by a pair of dispersion parts (101) in the dispersion box (100), and are mixed once at the same time; then the sand materials after the once mixing can enter the sand mixing component (20) through the first material outlet (103) and the second material inlet (202), and in the sand mixing box (200), the sand materials are stirred by the pair of sand mixing parts (201) to achieve secondary mixing, thereby completing the sand mixing step; After the sand mixing step, the various sand materials enter the cold box core making production line. In the cold box core making production line, the various sand materials complete the core making, core assembly, dipping and drying processes to obtain the sand cores required for the subsequent processes and complete the core making steps; Step S2: smelting step; The raw materials required for the brake drum are melted into the required molten iron through the smelting production line, inoculated in the spheroidizing bag, and then transferred to the molding production line through the molten iron transfer bag and the molten iron transfer bag conveying equipment; Step S3: Modeling step; Through the molding production line, the mold is divided into boxes, the sand core is positioned and placed, the mold is closed, the raw material molten iron is poured, the mold is cooled, and the mold is demoulded, so that the brake drum blank with a gate is obtained; Step S4: rough machining of brake drum blank; The brake drum blank with a gate is sheared off by a hydraulic shearing device, and then the gate position is polished by an angle grinder to make it flat, and then the burrs on the brake drum surface are removed by a shot blasting machine to obtain the brake drum blank; Step S5: finishing the brake drum blank; The production of brake drums can be completed by grinding, drilling, edging, leveling, cleaning, painting and drying the brake drum blanks.

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