Liquid compression molding mold and molding method for hammerhead of rock drilling hammer of rock digging ship

Abstract

The invention discloses a liquid compression molding die and method for a hammerhead of a rock drilling hammer of a rock digging ship, and belongs to the technical field of forming dies. A liquid compression molding mold for a hammerhead of a rock drilling hammer of a rock digging ship comprises an upper mold base and a lower mold base, the lower mold base comprises a mold base body, and the liquid compression molding mold further comprises a spraying assembly which moves in the lower mold base and is used for spraying a release agent to the inner wall of the lower mold base; the spraying assembly comprises two second spraying parts used for spraying the inner walls of the two ends of the lower die base and a first spraying part arranged between the two second spraying parts and used for spraying the other inner walls of the lower die base. The overturning assembly is detachably installed on one side of the lower die base. According to the mold release agent smearing device, mechanization and automation of mold release agent smearing are achieved, the labor intensity of workers is greatly reduced, the production efficiency is remarkably improved, the mold release agent smearing device is particularly suitable for large-scale production, and the problems that when a traditional large mold is smeared with a mold release agent manually through a brush, time and labor are wasted, the workload is large, and it is difficult to guarantee uniformity of a coating are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of forming die, in particular to a liquid die forming die for rock cutter hammer head of rock cutter ship and a forming method. BACKGROUND

[0002] The rock cutter hammer in the rock cutter ship is one of the core components for rock breaking, and provides support for channel dredging, wharf construction and submarine engineering construction. In high-strength operation, i.e. hard rock breaking, the annual consumption is large, and it is a wear part with a higher replacement frequency in the rock cutter ship. The main failure mode is generally crack and impact wear. Therefore, the selection of the material of the hammer head and the forming method are the keys to long-life operation under this special working condition. The existing manufacturing method for the rock cutter hammer head is casting, mainly traditional sand casting and composite casting. The hammer head formed by traditional sand casting inevitably has defects such as air hole, shrinkage and porosity. Under harsh working conditions, it will be severely worn due to excessive impact force, and even cracked. The composite casting hammer head has complex process and poor uniformity of the bonding surface, which is easy to break and peel off, and cannot meet the use requirements.

[0003] With the increasing maturity of large-tonnage hydraulic machines, liquid metal die forming can be used for castings with simple shapes. Before pouring the metal solution, the existing die seat die cavity is generally sprayed and brushed with alcohol-based magnesia powder paint multiple times to facilitate demolding. However, for relatively large molds, manual spraying is time-consuming and labor-intensive, and the workload is large. If a spray head is used for spraying, the spray position of the spray head is generally fixed, and the distance between the spray distance and the inner wall of the die cavity will affect the uniformity of the coating, thereby affecting the processing quality of the hammer head. SUMMARY

[0004] The purpose of the present application is to solve the problems in the prior art, and a liquid die forming die for rock cutter hammer head of rock cutter ship is provided.

[0005] In order to achieve the above-mentioned purpose, the following technical scheme is adopted in the present application: A liquid die forming die for rock cutter hammer head of rock cutter ship, comprising an upper die seat and a lower die seat, the lower die seat comprising a die seat body, further comprising: A spraying assembly movably arranged in the lower die seat for spraying a release agent on the inner wall of the lower die seat, the spraying assembly comprising two second spraying parts for spraying the inner walls at both ends of the lower die seat and a first spraying part arranged between the two second spraying parts for spraying the remaining inner wall of the lower die seat; and a turnover assembly detachably installed on one side of the lower die seat for driving the spraying assembly to turn over from the outer side of the lower die seat to the inner side of the lower die seat; Wherein, an adjustment assembly for adjusting the spraying position of the spraying assembly is arranged between the turnover assembly and the spraying assembly.

[0006] Preferably, the turnover assembly comprises two supports fixed on the lower die seat by bolts, a rotating rod rotatably connected between the two supports, and a first motor fixed on one of the supports for driving the rotating rod to rotate.

[0007] Preferably, the position adjusting assembly comprises sleeves arranged at the two ends of the rotating rod, connecting plates rotatably connected with each of the sleeves and axially slidably arranged on the rotating rod, an expansion tube rotatably connected between the two connecting plates, and a second motor fixed on one of the connecting plates for driving the expansion tube to rotate, the two ends of the rotating rod are provided with external threads, and the rotating rod is threadedly arranged with the sleeves.

[0008] Preferably, the first spraying part comprises two first elastic expansion rods fixed on the fixed end and the expansion end of the expansion tube, and a first brush plate and a second brush plate arranged at the expansion ends of the two first elastic expansion rods respectively, the end of the first elastic expansion rod is provided with a first ball bearing movably against the inner wall of the lower die seat, and the first brush plate and the second brush plate are both provided with spray holes.

[0009] Preferably, the first brush plate and the second brush plate are slidably arranged, the first brush plate is provided with a blocking plate for blocking the spray holes of the second brush plate, and the blocking plate is slidably arranged with the second brush plate.

[0010] Preferably, the second spraying part comprises a connecting part arranged on the first elastic expansion rod, a fitting plate rotatably connected with the connecting part, a blocking tube fixed on the fitting plate, a brush tube slidably connected in the blocking tube, an elastic element arranged between the brush tube and the blocking tube, and an injection tube in communication with the brush tube, the brush tubes on the two sides are respectively in communication with the first brush plate and the second brush plate through pipelines, and the fitting plate movably bears against the top of the lower die seat.

[0011] Preferably, the connecting part comprises a sleeve slidably arranged axially with the fixed end of the first elastic expansion rod, and a fixed rod fixed on the sleeve, and the fixed rod is rotatably connected with the fitting plate.

[0012] Preferably, the second spraying part further comprises a support plate fixed on the connecting plate, a rotating rod rotatably connected with the support plate, a torsional spring arranged between the rotating rod and the support plate, a second elastic expansion rod fixed on the end of the rotating rod away from the support plate, and the end of the second elastic expansion rod away from the rotating rod is movably connected with the top of the fitting plate.

[0013] Preferably, the connecting plate and the rotating rod are slidably arranged in key grooves, and the sleeve and the first elastic expansion rod are slidably arranged in key grooves.

[0014] The application further discloses a liquid-state die forming method for a rock drill hammer head of a rock excavating ship, which is processed by the liquid-state die forming mold for a rock drill hammer head of a rock excavating ship. S1: The mold cavity of the lower mold base is completely exposed, and then the first motor is controlled to operate, so that the output shaft drives the rotating rod to rotate, and the rotating rod drives the entire spraying assembly to rotate and descend to the inside of the mold cavity of the lower mold base through the connecting plates at both ends. After rotation, the first spraying part and the second spraying part are both located at the edge of the mold cavity. In the rotation process, the elastic force of the second elastic expansion rod pushes the fitting plate to always abut against the top wall of the lower mold base, and the bottom of the sleeve is flush with the top of the lower mold base; S2: The radial position of the spraying assembly is adjusted through the positioning assembly. Since the rotating rod has external threads at both ends, the spraying assembly can be driven to move along the axial direction of the rotating rod through the cooperation of the threads of the sleeve, so that the spraying assembly can adapt to different sizes of the mold cavity or ensure that the brush pipe maintains the optimal distance from the inner wall of the mold cavity; S3: The injection pipe is continuously injected with the release agent through the external pump body, and the release agent flows into the brush pipes on both sides through the pipeline and is further distributed to the spray holes of the first brush plate and the second brush plate; At the same time, the second motor is controlled to operate, and the output shaft of the second motor drives the expansion pipe to rotate, so that the two first elastic expansion rods fixed on the fixed end and the expansion end of the expansion pipe are synchronously rotated; S4: Mold cavity side wall spraying: As the first elastic expansion rod rotates, the first ball at the end thereof always rolls in contact with the inner wall of the lower mold base, so that the first brush plate and the second brush plate mounted on the expansion end of the first elastic expansion rod can self-adaptively maintain a constant distance from the inner wall of the mold cavity. The first spraying part moves circumferentially along the inner wall of the mold cavity, and the release agent is uniformly sprayed to the arc-shaped side wall and the bottom of the mold cavity through the spray holes; Mold cavity end wall spraying: While the first elastic expansion rod rotates, the fitting plate is driven to slide along the top wall of the lower mold base through the sleeve ring and the fixed rod. The blocking pipe fixed with the fitting plate and the brush pipe inside the blocking pipe move along the width direction of the mold cavity. The brush pipe is automatically contracted or moved out along the inner wall of the mold cavity under the action of the elastic element. The release agent is sprayed from the spray holes of the brush pipe, and the spraying of the two end walls of the mold cavity is completed. When the brush pipe is partially retracted into the blocking pipe, the spray holes in the blocking pipe are blocked, and the spraying is automatically stopped to avoid waste; S5: When the spraying assembly rotates one or several rounds along the inner cavity of the lower mold base, and ensures that the inner wall of the mold cavity is uniformly covered, the injection of the release agent is stopped and the second motor is turned off. Then, the first motor is controlled to rotate in the reverse direction to drive the spraying assembly to rotate and lift from the inside of the mold cavity of the lower mold base to the outside; S6: After the spraying assembly is removed, the mold is closed, the upper mold base and the lower mold base are closed, and the liquid metal is poured to perform the normal liquid mold pressing forming process.

[0015] Compared with the prior art, the present application provides a rock excavating ship rock hammer head liquid mold pressing forming mold and forming method, which has the following beneficial effects: 1. In the present application, by moving the spraying assembly along the inner cavity of the lower die base, the mechanical and automatic application of the release agent is realized, which greatly reduces the labor intensity of workers, significantly improves the production efficiency, and is especially suitable for large-scale production, solving the problems of time-consuming and labor-intensive, large workload, and difficulty in ensuring uniform coating when using a brush to apply the release agent to the traditional large mold.

[0016] 2. In the present application, through the design of self-adaptive fitting (first ball, elastic telescopic rod, elastic brush pipe), the distance between the application unit and the inner wall of the mold cavity is always kept at the best and constant distance, so that a uniform thickness of the release agent coating can be formed, greatly improving the surface quality and demolding success rate of the hammer head casting, overcoming the problem of uneven coating thickness caused by the distance difference between the nozzle and the different parts of the mold cavity when using a fixed nozzle to spray, and avoiding the demolding difficulty or surface quality defects of the hammer head caused thereby.

[0017] 3. In the present application, by combining circumferential rotation coating (first spraying part) with radial linear coating (second spraying part), complete and seamless coating of the arc-shaped side wall and the two end vertical side walls of the mold cavity is realized through a set of driving system, without any dead angle, solving the problem that the inner surface of a complex mold cavity (such as a rock drill hammer head mold) with arc-shaped side walls and two end vertical side walls, especially the end wall, is difficult to be fully and uniformly covered by a single motion trajectory coating device.

[0018] 4. In the present application, by setting the positioning assembly and the elastic setting of the plugging pipe and the brush pipe, the device can adapt to different mold cavities within a certain size range, increasing the versatility of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structure diagram of the lower die base of the present application Figure 1 ; Figure 2 is an enlarged structure diagram of part A in the present application Figure 1 ; Figure 3 is a structure diagram of the lower die base of the present application Figure 2 ; Figure 4 is an enlarged structure diagram of part B in the present application Figure 3 ; Figure 5 is a partial cross-sectional structure diagram of the lower die base of the present application Figure 1 ; Figure 6 is a partial cross-sectional structure diagram of the lower die base of the present application Figure 2 ; Figure 7 is a partial cross-sectional structure diagram of the lower die base of the present application Figure 3 ; Figure 8 A cross-sectional structure schematic diagram of a sealing tube of the present application; Figure 9 A structure schematic diagram of an outer part of a second elastic telescopic rod of the present application; Figure 10 A structure schematic diagram of a first brush plate and a second brush plate of the present application; Figure 11 A cross-sectional structure schematic diagram of an upper die holder and a lower die holder of the present application; Figure 12 A cross-sectional structure schematic diagram of an upper die holder and a lower die holder of the present application.

[0020] In the figure: 1, upper die holder; 2, lower die holder; 201, die holder body; 2011, semicircular exhaust groove; 2012, overflow groove; 2013, ejection block; 3, first spraying part; 301, first elastic telescopic rod; 302, first brush plate; 3021, sealing plate; 303, second brush plate; 4, second spraying part; 401, fitting plate; 402, sealing tube; 403, brush tube; 404, elastic element; 5, support; 501, rotating rod; 502, first motor; 6, sleeve; 601, connecting plate; 602, telescopic tube; 603, second motor; 7, connecting part; 701, sleeve ring; 702, fixed rod; 8, injection tube; 9, support plate; 901, rotating rod; 10, second elastic telescopic rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely 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, and all other embodiments obtained by those skilled in the art without creative labor on the basis of the embodiments in the present application belong to the protection scope of the present application.

[0022] In the description of the present application, it should be noted that the terms “upper”, “lower”, “inner”, “outer”, “top / bottom end” and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms “first” and “second” are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present application, it should be noted that unless otherwise expressly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements; for those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] As Figure 1 , Figure 3 , Figure 11 and Figure 12 shown, the present embodiment proposes a liquid mold forming mold for rock hammer head of rock excavating ship, which comprises an upper mold base 1 and a lower mold base 2, the lower mold base 2 comprises a mold base body 201, the inner cavity of the mold base body 201 is used for forming the hammer head, the inner cavity is further provided with a semicircular exhaust groove 2011 and an overflow groove 2012, and the bottom is provided with an ejection block 2013 for ejecting the formed rock hammer, the ejection block 2013 is composed of an inverted trapezoid and a cylinder, further comprising a spraying assembly and a turnover assembly; the spraying assembly is movably arranged in the lower mold base 2 and is used for spraying release agent on the inner wall of the lower mold base 2, the spraying assembly comprises two second spraying parts 4 for spraying the inner walls at both ends of the lower mold base 2 and a first spraying part 3 arranged between the two second spraying parts 4 and used for spraying the remaining inner wall of the lower mold base 2, so as to ensure that all surfaces in the cavity can be uniformly covered with release agent; the turnover assembly is detachably arranged on one side of the lower mold base 2 and is used for driving the spraying assembly to turn over from the outside of the lower mold base 2 to the inside of the lower mold base 2; wherein, an adjusting assembly is arranged between the turnover assembly and the spraying assembly and is used for adjusting the spraying position of the spraying assembly; Specifically, after completing a mold pressing operation, the work flow of the mold for spraying release agent for the next operation is as follows: Initial state: the spraying assembly is in the position outside the lower mold base 2 under the driving of the turnover assembly, which is convenient for maintenance or replacement; Turnover into position: the turnover assembly is started to drive the spraying assembly to turn over from the outside of the lower mold base 2 into the cavity inside the lower mold base 2; Position adjustment: when the spraying assembly reaches the predetermined position inside the lower mold base 2, the adjusting assembly starts to work to accurately align the inner wall regions responsible for spraying respectively; Zoning spraying: the first spraying part 3 and the two second spraying parts 4 are started simultaneously according to the preset path to uniformly spray release agent to the inner wall of the cavity of the lower mold base 2, the first spraying part 3 covers the middle region, and the two second spraying parts 4 cover the two end regions.

[0025] Turnover reset: after the spraying operation is completed, the turnover assembly acts again, drives the spraying assembly to turn over from the inside of the lower mold base 2 and reset to the outside of the lower mold base 2, leaving space for mold closing and the next pouring operation; The application realizes automatic operation of the release agent spraying, replaces the traditional inefficient and uneven manual spraying mode, significantly improves the production efficiency, shortens the production cycle, and because the spraying assembly can be completely moved out of the outside of the lower mold base 2 through the turnover assembly, the cleaning, inspection and replacement of the spraying assembly become very convenient, easy to maintain, and ensure long-term stable operation of the equipment.

[0026] As shown in Figure 1 and Figure 2 , as a preferred embodiment, on the basis of the above mode, further, the turnover assembly includes two supports 5 fixed on the lower mold base 2 by bolts, a rotating rod 501 rotatably connected between the two supports 5, and a first motor 502 fixed on one of the supports 5 for driving the rotating rod 501 to rotate, the support 5 is fixedly installed on the outside of one side of the lower mold base 2 by bolts, and this bolt connection mode enables the entire turnover assembly to be installed and disassembled as a module, facilitating transportation, maintenance or replacement. Specifically, when the spraying operation needs to be performed, the control system sends a start instruction to the first motor 502, the first motor 502 starts to operate, drives the rotating rod 501 connected thereto to rotate by a precise angle around its axis, since the spraying assembly is fixed on the rotating rod 501 by the positioning assembly, the rotating motion of the rotating rod 501 is converted into the arc trajectory motion of the spraying assembly, and the spraying assembly stably turns over from the waiting / maintenance position located outside the lower mold base 2 into the cavity inside the lower mold base 2 to reach the preset working position under the power drive.

[0027] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 10 , as a preferred embodiment, on the basis of the above mode, further, the positioning assembly includes a sleeve 6 arranged at both ends of the rotating rod 501, a connecting plate 601 rotatably connected with each sleeve 6 and axially slidably arranged with the rotating rod 501, an extension pipe 602 rotatably connected between the two connecting plates 601, and a second motor 603 fixed on one of the connecting plates 601 for driving the extension pipe 602 to rotate, both ends of the rotating rod 501 are provided with external threads, and the rotating rod 501 is threadedly arranged with the sleeve 6 through the external threads. Further, the first spraying part 3 comprises two first elastic telescopic rods 301 fixed on the fixed end and the telescopic end of the telescopic pipe 602, and a first brush plate 302 and a second brush plate 303 arranged on the telescopic ends of the two first elastic telescopic rods 301 respectively, and the ends of the first elastic telescopic rods 301 are provided with first rolling balls in sliding contact with the inner wall of the lower mold base 2, the first brush plate 302 and the second brush plate 303 are both provided with spray holes, and the interiors of the first brush plate 302 and the second brush plate 303 are hollow for the flow of the release agent; Specifically, the staff can adjust the distance between the first brush plate 302 and the second brush plate 303 according to the size of the inner cavity of the lower mold base 2, so that the lengths of the first brush plate 302 and the second brush plate 303 are adapted to the length of the inner cavity of the lower mold base 2; The length of the telescopic pipe 602 can be adjusted by rotating the sleeve pipe 6, so that the sleeve pipe 6 rotates relative to the rotating rod 501, the sleeve pipe 6 moves axially along the rotating rod 501, and the connecting plate 601 moves synchronously when the sleeve pipe 6 moves, so as to adjust the lengths of the first brush plate 302 and the second brush plate 303; Then the second motor 603 is controlled to operate, so that the output shaft of the second motor 603 drives the telescopic pipe 602 to rotate, thereby driving the two first elastic telescopic rods 301 fixed on the fixed end and the telescopic end of the telescopic pipe 602 to rotate synchronously, and with the rotation of the first elastic telescopic rods 301, the first rolling balls at the ends of the first elastic telescopic rods 301 are always in rolling contact with the inner wall of the lower mold base 2, so that the first brush plate 302 and the second brush plate 303 mounted on the telescopic ends of the first elastic telescopic rods 301 can self-adaptively maintain a constant distance from the inner wall of the mold cavity, and the first spraying part 3 moves circumferentially along the inner wall of the mold cavity, and the release agent is uniformly sprayed to the arc-shaped side wall and the bottom of the mold cavity through the spray holes, thereby overcoming the problem of uneven coating thickness caused by the distance difference between the fixed nozzle and different parts of the mold cavity when the fixed nozzle is used for spraying, and avoiding the demolding difficulty or surface quality defects of the hammer head caused thereby; It should be noted that the first brush plate 302 and the second brush plate 303 are slidingly arranged, the first brush plate 302 is provided with a blocking plate 3021 for blocking the spray holes of the second brush plate 303, and the blocking plate 3021 is slidingly arranged with the second brush plate 303; the end of the blocking plate 3021 is flush with the end of the first brush plate 302, and when the first brush plate 302 and the second brush plate 303 slide relative to each other, the spray holes of the two plates have an overlapping area, in order to avoid too much release agent being sprayed from the spray holes in the overlapping area, the blocking plate 3021 is used to block the spray holes of the second brush plate 303 in the overlapping area, so that only the spray holes of the first brush plate 302 spray release agent in the overlapping area, and the uniformity of spraying is ensured; and sealing rubber should be arranged at the sliding contact position of the blocking plate 3021 and the second brush plate 303 to prevent leakage.

[0028] As Figure 3 , Figure 4 , Figure 5 , Figure 6 ,Figure 7 、 Figure 8 and Figure 9 As shown in the preferred embodiment, on the basis of the above-mentioned mode, further, the second spraying part 4 comprises a connecting part 7 arranged on the first elastic telescopic rod 301, a cladding plate 401 rotatably connected with the connecting part 7, a blocking pipe 402 fixedly arranged on the cladding plate 401, a brush pipe 403 slidingly connected in the blocking pipe 402, an elastic element 404 arranged between the brush pipe 403 and the blocking pipe 402, and an injection pipe 8 in communication with the brush pipe 403, the two-side brush pipes 403 are respectively in communication with the first brush plate 302 and the second brush plate 303 through pipelines, and the cladding plate 401 is movably abutted against the top of the lower die seat 2; a sealing rubber should also be arranged at the sliding contact position of the brush pipe 403 and the blocking pipe 402 to avoid leakage; Further, the connecting part 7 comprises a sleeve ring 701 slidingly arranged in the axial direction of the fixed end of the first elastic telescopic rod 301, and a fixed rod 702 fixedly arranged on the sleeve ring 701, the fixed rod 702 is rotatably connected with the cladding plate 401; Further, the second spraying part 4 further comprises a support plate 9 fixedly arranged on the connecting plate 601, the support plate 9 is rotatably connected with a rotating rod 901, a torsion spring is arranged between the rotating rod 901 and the support plate 9, a second elastic telescopic rod 10 is fixedly arranged at the end of the rotating rod 901 away from the support plate 9, and the end of the second elastic telescopic rod 10 away from the rotating rod 901 is movably connected with the top of the cladding plate 401; Specifically, when the turnover assembly drives the positioning assembly and the spraying assembly to turn over to the inner cavity of the lower die seat 2 through the connecting plate 601, the first spraying part 3 and the second spraying part 4 are both at the edge part of the mold cavity, in the turning-over process, the elastic force of the second elastic telescopic rod 10 will push the cladding plate 401 to always abut against the top wall of the lower die seat 2, and the bottom of the sleeve pipe 6 is flush with the top of the lower die seat 2; When the second motor 603 drives the first elastic telescopic rod 301 to rotate through the telescopic pipe 602, the cladding plate 401 is slidingly driven along the top wall of the lower die seat 2 through the sleeve ring 701 and the fixed rod 702, the blocking pipe 402 and the brush pipe 403 inside the blocking pipe 402 move along the width direction of the mold cavity, the brush pipe 403 is automatically contracted or moved out along the inner wall of the mold cavity under the action of the elastic element 404, the releasing agent is sprayed from the spray hole of the brush pipe 403, the spraying of the inner wall of the two end parts of the mold cavity is completed, when the brush pipe 403 is partially retracted into the blocking pipe 402, the spray hole in the blocking pipe 402 is blocked, the spraying is automatically stopped to avoid waste; By combining the circumferential rotation coating (first spraying part 3) with the radial straight-line coating (second spraying part 4), the complete and seamless coating of the side wall and the two end vertical side walls of the mold cavity is realized simultaneously by one set of driving system, without any dead angle, solving the problem that the various inner surfaces of the complex mold cavity (such as the hammer head mold of the rock drill hammer) and especially the end wall are difficult to be fully and uniformly covered by the coating device with a single motion track.

[0029] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , as a preferred embodiment, on the basis of the above mode, further, the connection plate 601 and the rotating rod 501 and the sleeve ring 701 and the first elastic expansion rod 301 are both arranged in a key groove sliding mode; Specifically, by processing the key groove, the connection plate 601 can slide axially along the rotating rod 501 while the circumferential displacement is locked; the sleeve ring 701 can slide axially along the fixed end of the first elastic expansion rod 301 while the circumferential displacement is locked.

[0030] The application also discloses a liquid mold pressing forming method for a rock drill hammer head of a rock excavating ship. S1: expose the mold cavity of the lower mold base 2 completely, then control the first motor 502 to operate, so that the output shaft drives the rotating rod 501 to rotate, the rotating rod 501 drives the whole spraying assembly to overturn and descend to the inside of the mold cavity of the lower mold base 2 from the outside of the lower mold base 2 through the two end connection plates 601, after overturning, the first spraying part 3 and the second spraying part 4 are both located at the edge part of the mold cavity, in the overturning process, the elastic force of the second elastic expansion rod 10 will always push the abutting plate 401 to keep abutting with the top wall of the lower mold base 2, the bottom of the sleeve pipe 6 is flush with the top of the lower mold base 2; S2: adjust the radial position of the spraying assembly through the adjusting assembly, since the rotating rod 501 has external threads, through the thread cooperation with the sleeve pipe 6, the connection plate 601 and the whole spraying assembly can be driven to move along the axial direction of the rotating rod 501, so as to adapt to different sizes of the mold cavity or ensure that the brush pipe 403 keeps the optimal distance with the inner wall of the mold cavity; S3: continuously inject the mold releasing agent into the injection pipe 8 through the external pump body, the mold releasing agent flows into the two brush pipes 403 through the pipeline, and is further divided into the injection holes of the first brush plate 302 and the second brush plate 303; At the same time, control the second motor 603 to operate, the output shaft of the second motor 603 drives the expansion pipe 602 to rotate, so as to drive the two first elastic expansion rods 301 fixed on the fixed end and the expansion end of the expansion pipe 602 to rotate synchronously; S4: Spraying the sidewall of the mold cavity: As the first elastic telescopic rod 301 rotates, the first ball at its end always rolls in contact with the inner wall of the lower mold base 2, so that the first brush plate 302 and the second brush plate 303 installed on the telescopic end of the first elastic telescopic rod 301 can adaptively maintain a constant distance from the inner wall of the mold cavity. The first spraying part 3 moves circumferentially along the inner wall of the mold cavity and sprays the release agent evenly onto the arc-shaped sidewall and bottom of the mold cavity through the spray hole. Mold cavity end wall spraying: While the first elastic telescopic rod 301 rotates, the bonding plate 401 is driven to slide along the top wall of the lower mold base 2 through the collar 701 and the fixing rod 702. The sealing tube 402 fixed to the bonding plate 401 and the brush tube 403 inside move along the width direction of the mold cavity. Under the action of the elastic element 404, the brush tube 403 automatically retracts or moves out with the inner wall of the mold cavity. The release agent is sprayed out from the spray hole of the brush tube 403 to complete the spraying of the inner walls of the two ends of the mold cavity. When the brush tube 403 partially retracts into the sealing tube 402, the spray hole located in the sealing tube 402 is blocked, and the spraying stops automatically to avoid waste. S5: After the spraying assembly rotates once or several times along the inner cavity of the lower mold base 2 to ensure that the inner wall of the mold cavity is evenly covered, stop injecting the release agent and turn off the second motor 603. Then, control the first motor 502 to rotate in the opposite direction, drive the spraying assembly to flip from the mold cavity of the lower mold base 2 and lift it to the outside. S6: After removing the spraying components, the mold can be closed. The upper mold base 1 and the lower mold base 2 are closed, and liquid metal is poured in to carry out the normal liquid molding process.

[0031] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A liquid molding die for a rock-dredging hammer head, comprising an upper die base (1) and a lower die base (2), characterized in that, The lower mold base (2) includes a mold base body (201) and further includes: The spraying assembly is movable inside the lower mold base (2) and is used to spray a release agent onto the inner wall of the lower mold base (2). The spraying assembly includes two second spraying parts (4) for spraying the inner walls at both ends of the lower mold base (2) and a first spraying part (3) disposed between the two second spraying parts (4) for spraying the remaining inner walls of the lower mold base (2). And a flipping assembly, which is detachably mounted on one side of the lower mold base (2) for driving the spraying assembly to flip from the outside of the lower mold base (2) to the inside of the lower mold base (2); The flipping component and the spraying component are provided with an adjustment component to adjust the spraying position of the spraying component.

2. The liquid molding die for the rock-dredging hammer head of a rock-dredging vessel according to claim 1, characterized in that, The flipping assembly includes two supports (5) fixed to the lower mold base (2) by bolts, a rotating rod (501) rotatably connected between the two supports (5), and a first motor (502) fixed to one of the supports (5) for driving the rotating rod (501) to rotate.

3. The liquid molding die for the rock-dredging hammer head of a rock-dredging vessel according to claim 2, characterized in that, The adjustment assembly includes sleeves (6) at both ends of the rotating rod (501), a connecting plate (601) rotatably connected to each sleeve (6) and axially sliding with the rotating rod (501), a telescopic tube (602) rotatably connected between the two connecting plates (601), and a second motor (603) fixed on one of the connecting plates (601) for driving the telescopic tube (602) to rotate. Both ends of the rotating rod (501) are provided with external threads, and the rotating rod (501) is threaded to the sleeve (6) through the external threads.

4. The liquid molding die for the rock-dredging hammer head of a rock-dredging vessel according to claim 3, characterized in that, The first spraying part (3) includes two first elastic telescopic rods (301) fixed on the fixed end and telescopic end of the telescopic tube (602) and a first brush plate (302) and a second brush plate (303) respectively set on the telescopic ends of the two first elastic telescopic rods (301). The end of the first elastic telescopic rod (301) is provided with a first ball that moves against the inner wall of the lower mold base (2). The first brush plate (302) and the second brush plate (303) are both provided with spray holes.

5. The liquid molding die for the rock-dredging hammer head of a rock-dredging vessel according to claim 4, characterized in that, The first brush plate (302) and the second brush plate (303) are slidably disposed. The first brush plate (302) is provided with a sealing plate (3021) for blocking the spray hole of the second brush plate (303). The sealing plate (3021) is slidably disposed with the second brush plate (303).

6. The liquid molding die for the rock-dredging hammer head of a rock-dredging vessel according to claim 5, characterized in that, The second spraying part (4) includes a connecting part (7) provided on the first elastic telescopic rod (301), a bonding plate (401) rotatably connected to the connecting part (7), a sealing tube (402) fixed on the bonding plate (401), a brush tube (403) slidably connected in the sealing tube (402), an elastic element (404) provided between the brush tube (403) and the sealing tube (402), and an injection tube (8) connected to the brush tube (403). The brush tubes (403) on both sides are connected to the first brush plate (302) and the second brush plate (303) respectively through pipelines. The bonding plate (401) is movably abutted against the top of the lower mold base (2).

7. The liquid molding die for the rock-dredging hammer head of a rock-dredging vessel according to claim 6, characterized in that, The connecting part (7) includes a collar (701) that is axially slidably disposed with the fixed end of the first elastic telescopic rod (301) and a fixing rod (702) fixed on the collar (701). The fixing rod (702) is rotatably connected to the bonding plate (401).

8. The liquid molding die for the rock-dredging hammer head of a rock-dredging vessel according to claim 7, characterized in that, The second spraying part (4) also includes a support plate (9) fixed on the connecting plate (601). A rotating rod (901) is rotatably connected to the support plate (9). A torsion spring is provided between the rotating rod (901) and the support plate (9). A second elastic telescopic rod (10) is fixed at one end of the rotating rod (901) away from the support plate (9). The end of the second elastic telescopic rod (10) away from the rotating rod (901) is movably connected to the top of the bonding plate (401).

9. A liquid molding die for a rock-dredging hammer head of a rock-dredging vessel according to claim 8, characterized in that, The connecting plate (601) and the rotating rod (501) and the collar (701) and the first elastic telescopic rod (301) are both keyway sliding arrangements.

10. A method for liquid molding of a rock-dredging hammer head for a rock-dredging vessel, comprising processing using a liquid molding die for a rock-dredging hammer head as described in claim 9, characterized in that... Includes the following steps: S1: Make the cavity of the lower mold base (2) fully exposed, and then control the first motor (502) to run, so that its output shaft drives the rotating rod (501) to rotate. The rotating rod (501) drives the entire spraying assembly to flip from the outside of the lower mold base (2) and descend to the inside of its cavity through the connecting plates (601) at both ends. After flipping, the first spraying part (3) and the second spraying part (4) are both at the edge of the cavity. During the flipping process, the elastic force of the second elastic telescopic rod (10) will push the bonding plate (401) to always keep in contact with the top wall of the lower mold base (2). The bottom of the sleeve (6) is flush with the top of the lower mold base (2). S2: Adjust the radial position of the spraying assembly by adjusting the positioning component. Since the rotating rod (501) has external threads at both ends, it can drive the connecting plate (601) and the entire spraying assembly to move along the axial direction of the rotating rod (501) by threading with the sleeve (6), thereby adapting to different sizes of mold cavities or ensuring that the brush tube (403) maintains the best distance from the inner wall of the mold cavity. S3: The release agent is continuously injected into the injection pipe (8) through the external pump body. The release agent flows into the brush pipes (403) on both sides through the pipeline and is further diverted to the spray holes of the first brush plate (302) and the second brush plate (303). At the same time, the second motor (603) is controlled to run. The output shaft of the second motor (603) drives the telescopic tube (602) to rotate, thereby driving the two first elastic telescopic rods (301) fixed on the fixed end and telescopic end of the telescopic tube (602) to rotate synchronously. S4: Spraying the sidewall of the mold cavity: As the first elastic telescopic rod (301) rotates, the first ball at its end always rolls in contact with the inner wall of the lower mold base (2), so that the first brush plate (302) and the second brush plate (303) installed on the telescopic end of the first elastic telescopic rod (301) can adaptively maintain a constant distance from the inner wall of the mold cavity. The first spraying part (3) moves circumferentially along the inner wall of the mold cavity and sprays the release agent evenly onto the arc-shaped sidewall and bottom of the mold cavity through the spray hole. Spraying the mold cavity end walls: While the first elastic telescopic rod (301) rotates, the bonding plate (401) is driven to slide along the top wall of the lower mold base (2) through the collar (701) and the fixing rod (702). The sealing tube (402) fixed with the bonding plate (401) and the brush tube (403) inside move along the width direction of the mold cavity. Under the action of the elastic element (404), the brush tube (403) automatically shrinks or moves out with the inner wall of the mold cavity. The release agent is sprayed out from the spray hole of the brush tube (403) to complete the spraying of the inner walls of the two ends of the mold cavity. When the brush tube (403) partially retracts into the sealing tube (402), the spray hole located in the sealing tube (402) is blocked, and the spraying stops automatically to avoid waste. S5: When the spraying assembly rotates once or several times along the inner cavity of the lower mold base (2) to ensure that the inner wall of the mold cavity is evenly covered, stop injecting the release agent and turn off the second motor (603). Then, control the first motor (502) to rotate in the opposite direction, drive the spraying assembly to flip from the mold cavity of the lower mold base (2) and lift it to the outside. S6: After removing the spraying components, the mold can be closed. The upper mold base (1) and the lower mold base (2) are closed, and liquid metal is poured in to carry out the normal liquid molding process.

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