Heavy multidirectional die-casting equipment and method for vehicle body integrated casting

Abstract

The heavy multidirectional die-casting equipment comprises a machine body, the machine body comprises a base, a stand column, a fixed cross beam and a movable cross beam, the stand column is installed on the base, the fixed cross beam is installed at the top of the stand column, and a vertical die-casting mechanism is installed at the bottom of the fixed cross beam; the telescopic end of the vertical die-casting mechanism is connected with a movable cross beam installed on the stand column. The die-casting die is installed on the die changing mechanism, and the die changing mechanism is installed on the base. Horizontal die-casting mechanisms are installed on the two sides of the base, an injection system is installed below the base, and core-pulling mechanisms are arranged on the front side and the rear side of the die-casting die respectively. According to the heavy multi-directional die-casting equipment and method for the vehicle body integrated casting, the vertical die-casting mechanism and the horizontal die-casting mechanism are used in cooperation, a vehicle body chassis and a side wall can be integrally formed in a die-casting mode, the heavy multi-directional die-casting equipment and method are suitable for production of large vehicle body structural parts such as a rear bottom plate and a front cabin frame, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of die-casting machines, and in particular relates to a heavy-duty multi-directional die-casting device and method for vehicle body integrated castings. Background Art

[0002] With the rapid development of the new energy vehicle industry, the performance requirements for automobiles are constantly increasing, especially in terms of power, safety, comfort and lightweight. These requirements have promoted the development of aluminum alloy products for automobiles towards thin-walled, high-strength, low-cost and integrated structures. The traditional automobile manufacturing process mainly includes four links: stamping, welding, painting and assembly. This process is not only time-consuming and costly, but also has limitations in material use and production efficiency.

[0003] The emergence of integrated die-casting technology provides new possibilities for solving the above problems. The die-casting machine plays a vital role in integrated die-casting. It hydraulically injects molten metal into the mold under pressure to cool and form, and obtains solid metal castings after the mold is opened. According to the clamping force, die-casting machines can be divided into small (<400T), medium (400T-1000T) and large (≥1000T). In integrated die-casting, the super-large die-casting machine used refers to a die-casting machine with a clamping force of more than 6000T. Since the clamping force of the die-casting machine needs to cover the projected area of ​​the required die-casting parts, large body structural parts such as the rear floor and front cabin frame require a die-casting machine with a clamping force of at least 6000T. As the projected area of ​​the structural parts increases, the required clamping force of the die-casting machine is also greater, and the barriers to mass production of super-large die-casting machines are higher.

[0004] Existing die-casting technology has limitations when processing large and complex automotive body parts. Traditional vertical or horizontal one-way die-casting machines cannot meet the production needs of large body structural parts, cannot achieve large-scale integrated die-casting, and the inner core mold cannot be removed after die-casting. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention aims to propose a heavy-duty multi-directional die-casting equipment and method for integrated vehicle body castings. The heavy-duty multi-directional die-casting equipment and method solve the problem that traditional vertical or horizontal unidirectional die-casting machines cannot meet the production needs of large vehicle body structural parts and cannot achieve integrated die-casting molding of large vehicle body structural parts.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A heavy-duty multi-directional die-casting device for integrated car body castings, comprising a body, a die-casting mold, a vertical die-casting mechanism, a mold changing mechanism, a horizontal die-casting mechanism, an injection system and a core pulling mechanism, wherein the body comprises a base, a column, a fixed beam and a movable beam, the base is mounted with a column, the top of the column is mounted with a fixed beam, the bottom of the fixed beam is mounted with a vertical die-casting mechanism, the telescopic end of the vertical die-casting mechanism is connected with a movable beam mounted on the column, the movable beam moves up and down along the column to perform vertical direction mold clamping on the die-casting mold;

[0008] The die-casting mold is installed on a mold changing mechanism, and the mold changing mechanism is installed on a base; horizontal die-casting mechanisms for horizontally closing the die-casting mold are installed on both sides of the base, and an injection system for feeding liquid metal into the die-casting mold is installed below the base. A set of core pulling mechanisms are respectively provided on the front and rear sides of the die-casting mold.

[0009] Furthermore, the movable crossbeam comprises a crossbeam body, an upper connecting plate and a lower connecting plate. The upper connecting plate is installed on the top of the crossbeam body, and the lower connecting plate is installed on the bottom. The four corners of the upper connecting plate and the lower connecting plate are respectively slidably connected to the columns.

[0010] Furthermore, a locking mechanism for locking the movable crossbeam is provided on the column, and the locking mechanism is installed on the upper connecting plate.

[0011] Furthermore, the die-casting mold includes a bottom mold, a side movable mold and an upper mold. A group of core pulling mechanisms are respectively installed on the front and rear sides of the bottom mold, and a side movable mold for connecting with the horizontal die-casting mechanism is respectively installed on the left and right sides of the bottom mold. An upper mold is installed above the bottom mold, and the upper mold is connected to the bottom of the lower connecting plate.

[0012] Furthermore, the vertical die-casting mechanism includes a vertical master cylinder, the top of which is mounted on the bottom of a fixed crossbeam, and the telescopic end of the vertical master cylinder passes through an upper connecting plate and is fixedly connected to the crossbeam body.

[0013] Furthermore, the mold changing mechanism includes a bottom mold workbench and a mold changing workbench, the bottom mold workbench and the mold changing workbench are respectively slidably mounted on the base, and the die-casting molds are respectively mounted on the bottom mold workbench and the mold changing workbench.

[0014] Furthermore, the horizontal die-casting mechanism includes a die-casting mechanism 1 and a die-casting mechanism 2, wherein the die-casting mechanism 2 has the same structure as the die-casting mechanism 3 and is respectively installed on both sides of the base;

[0015] The die-casting mechanism 1 includes a horizontal base, a support plate, a fixed mold plate, a horizontal main cylinder, a movable mold plate and a mold workbench, wherein the support plate and the fixed mold plate are respectively installed at both ends of the horizontal base; the horizontal main cylinder is installed on the support plate, and the telescopic end of the horizontal main cylinder is connected to the movable mold plate, and the movable mold plate is located between the support plate and the fixed mold plate. The mold workbench is installed on the movable mold plate, and one end of the mold workbench passes through the fixed mold plate and is connected to a side movable mold.

[0016] Furthermore, the die-casting mechanism 1 also includes a transmission locking mechanism, and the telescopic end of the horizontal master cylinder is connected to the moving die plate through the transmission locking mechanism;

[0017] The transmission locking mechanism includes a transmission plate, connecting rod 1, connecting rod 2 and connecting rod 3. The transmission plate is installed at the telescopic end of the horizontal master cylinder. A group of connecting rod 1 is hinged at both ends of the transmission plate, and each group of connecting rod 1 is hinged to a group of connecting rod 2. One end of the two groups of connecting rod 2 is hinged to the support plate, and the other end is hinged to a group of connecting rod 3. The two groups of connecting rod 3 are hinged to the movable template.

[0018] Furthermore, the die-casting mechanism 1 also includes a guide column, one end of which is fixed to the outside of the support plate, and the other end of which passes through the support plate, the movable die plate and the fixed die plate in sequence and is fixed to the outside of the fixed die plate.

[0019] A heavy multi-directional die-casting method for an integrated vehicle body casting comprises the following steps:

[0020] S1. The vertical die-casting mechanism drives the movable crossbeam to move downward to close the top of the die-casting mold, and the horizontal die-casting mechanism closes the die-casting mold in the horizontal direction; wherein the closing speeds of the vertical die-casting mechanism and the horizontal die-casting mechanism are controlled to achieve closing in the horizontal direction first and then in the vertical direction;

[0021] S2. After the mold is closed, the metal liquid is sent into the die-casting mold cavity through the injection system to complete the casting and cooling;

[0022] S3. After cooling, the vertical die-casting mechanism drives the movable crossbeam to move upward to demould. At the same time, the horizontal die-casting mechanism demoulds the left and right sides of the die-casting mold. The core-pulling mechanism pulls the cores on the front and back sides of the die-casting mold. After the core-pulling is completed, the material-taking robot takes out the whole part, completing one die-casting.

[0023] S4, the die-changing mechanism removes the die-casting die that has completed die-casting and moves the new die-casting die to a designated position.

[0024] Compared with the prior art, the heavy-duty multi-directional die-casting equipment and method for vehicle body integrated castings described in the present invention have the following advantages:

[0025] (1) The heavy-duty multi-directional die-casting equipment for integrated vehicle body castings described in the present invention can die-cast the vehicle body chassis and side panels into one piece by using a vertical die-casting mechanism and a horizontal die-casting mechanism in combination. It is suitable for the production of large vehicle body structural parts, such as rear floor panels, front cabin frames, etc., and meets the demand of the new energy vehicle industry for large integrated castings. It can die-cast the vehicle body parts that originally required multiple steps to assemble in one step, significantly reducing the assembly and welding steps in the production process, thereby greatly improving production efficiency.

[0026] (2) The heavy-duty multi-directional die-casting equipment for vehicle body integrated castings described in the present invention is provided with a core pulling mechanism at the front and rear of the die-casting mold, so that the inner core mold can be removed after die-casting; by using the die-casting mold in conjunction with the mold changing mechanism, the die-casting mold can be replaced more quickly and conveniently, thereby reducing production interruption time and improving equipment utilization; through precise mold closing control and locking mechanism, the mold stability during the die-casting process is ensured, thereby improving the quality and consistency of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0029] Figure 2 A side view of the overall structure provided by an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the die-casting mold structure provided by an embodiment of the present invention;

[0031] Figure 4 A schematic diagram of the locking mechanism structure provided by an embodiment of the present invention;

[0032] Figure 5 for Figure 4 Schematic diagram of the AA section;

[0033] Figure 6 A structural schematic diagram of a die-casting mechanism provided in an embodiment of the present invention;

[0034] Figure 7 A schematic diagram of a guide column structure provided in an embodiment of the present invention.

[0035] Description of reference numerals:

[0036] 1. Fuselage; 11. Base; 12. Column; 13. Fixed beam; 14. Movable beam; 141. Beam body; 142. Upper connecting plate; 143. Lower connecting plate; 15. Locking mechanism; 151. Nut seat; 152. Opening and closing cylinder; 153. Half nut; 2. Die-casting mold; 21. Bottom mold; 22. Side movable mold; 23. Upper mold; 3. Vertical die-casting mechanism; 31. Vertical main cylinder; 4. Die-changing mechanism; 41. Bottom mold workbench; 42. Die-changing workbench; 5. Horizontal die-casting mechanism; Casting mechanism; 51, die-casting mechanism one; 511, horizontal base; 512, support plate; 513, fixed plate; 514, horizontal main cylinder; 515, moving plate; 516, mold workbench; 517, transmission locking mechanism; 5171, transmission plate; 5172, connecting rod one; 5173, connecting rod two; 5174, connecting rod three; 518, guide column; 52, die-casting mechanism two; 6, injection system; 61, accumulator; 62, booster mechanism; 63, hydraulic feeding cylinder; 7, core pulling mechanism. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0040] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0041] like Figures 1 to 7 As shown, a heavy-duty multi-directional die-casting equipment for vehicle body integrated castings includes a fuselage 1, a die-casting mold 2, a vertical die-casting mechanism 3, a mold changing mechanism 4, a horizontal die-casting mechanism 5, an injection system 6 and a core pulling mechanism 7. The fuselage 1 includes a base 11, a column 12, a fixed beam 13 and a movable beam 14. The base 11 is installed with a column 12, the top of the column 12 is installed with a fixed beam 13, the bottom of the fixed beam 13 is installed with a vertical die-casting mechanism 3, the telescopic end of the vertical die-casting mechanism 3 is connected to the movable beam 14 installed on the column 12, and the movable beam 14 moves up and down along the column 12 to perform vertical direction mold clamping on the die-casting mold 2;

[0042] The die-casting mold 2 is installed on a mold changing mechanism 4, and the mold changing mechanism 4 is installed on a base 11; horizontal die-casting mechanisms 5 for horizontally closing the die-casting mold 2 are installed on both sides of the base 11, and an injection system 6 for feeding liquid metal into the die-casting mold 2 is installed below the base 11. A set of core pulling mechanisms 7 are respectively provided on the front and rear sides of the die-casting mold 2.

[0043] In a preferred embodiment of the present invention, the movable crossbeam 14 includes a crossbeam body 141, an upper connecting plate 142 and a lower connecting plate 143. The upper connecting plate 142 is installed on the top of the crossbeam body 141, and the lower connecting plate 143 is installed on the bottom; the four corners of the upper connecting plate 142 and the lower connecting plate 143 are respectively slidably connected to the column 12.

[0044] In actual use, the vertical die-casting mechanism 3 drives the movable crossbeam 14 to move up and down along the column 12 to close the mold; the upper connecting plate 142 is provided with a mounting hole for mounting the vertical die-casting mechanism 3.

[0045] In a preferred embodiment of the present invention, a locking mechanism 15 for locking the movable crossbeam 14 is provided on the column 12 , and the locking mechanism 15 is installed on the upper connecting plate 142 .

[0046] The locking mechanism 15 includes a nut seat 151, an opening and closing cylinder 152 and a half nut 153. The nut seat 151 is installed on the upper connecting plate 142. A pair of half nuts 153 are placed in the nut seat 151. Each half nut 153 is connected to the telescopic end of an opening and closing cylinder 152. The two opening and closing cylinders 152 are installed on the nut seat 151.

[0047] In actual use, the half nuts 153 are provided with threads to increase the friction with the column 12. The opening and closing of the two half nuts 153 are controlled by the two opening and closing oil cylinders 152, and the two half nuts 153 lock or release the column 12. The movable crossbeam 14 moves vertically back and forth along the column 12 under the drive of the vertical die-casting mechanism 3, and the locking mechanism 15 moves up and down along the column 12 together with the movable crossbeam 14, locking the movable crossbeam 14 and the column 12 after the mold is closed and providing sufficient clamping force.

[0048] In a preferred embodiment of the present invention, a locking mechanism 15 is also provided at the connection between the bottom of the column 12 and the base 11 , and the locking mechanism 15 is installed on the base 11 .

[0049] In actual use, by providing a locking mechanism 15 at the connection between the column 12 and the base 11, the stability of the column when subjected to pressure and load can be ensured, and the column 12 can be prevented from displacement or vibration during the high-pressure casting process, thereby improving the safety of operation and facilitating the maintenance and inspection of the locking mechanism 15.

[0050] In a preferred embodiment of the present invention, the die-casting mold 2 includes a bottom mold 21, a side movable mold 22 and an upper mold 23. A group of core pulling mechanisms 7 are respectively installed on the front and rear sides of the bottom mold 21, and a side movable mold 22 for connecting with the horizontal die-casting mechanism 5 is respectively installed on the left and right sides of the bottom mold 21. An upper mold 23 is installed above the bottom mold 21, and the upper mold 23 is connected to the bottom of the lower connecting plate 143.

[0051] In actual use, the core pulling mechanism 7 can adopt the existing technology, and the side movable molds 22 on both sides can complete the core pulling of the die-casting mold 2 in the horizontal direction; a group of core pulling mechanisms 7 are installed on the front and rear sides of the bottom mold 21 respectively, and the core pulling mechanism 7 is integrated on the bottom mold 21, which plays the role of core pulling in the front and rear directions, reduces the die-casting time, and improves the demolding efficiency and casting quality.

[0052] In a preferred embodiment of the present invention, the vertical die-casting mechanism 3 includes a vertical main cylinder 31 , the top of which is installed at the bottom of the fixed beam 13 , and the telescopic end of the vertical main cylinder 31 passes through the upper connecting plate 142 and is fixedly connected to the beam body 141 .

[0053] In actual use, the top of the vertical master cylinder 31 fits against the bottom of the fixed beam 13 and is connected by bolts. The vertical master cylinder 31 drives the movable beam 14 to perform vertical reciprocating motion along the column 12; the telescopic end of the vertical master cylinder 31 passes through the upper connecting plate 142 and is fixed inside the beam body 141.

[0054] In a preferred embodiment of the present invention, the mold changing mechanism 4 includes a bottom mold worktable 41 and a mold changing worktable 42, and the bottom mold worktable 41 and the mold changing worktable 42 are respectively slidably installed on the base 11, and the die-casting mold 2 is respectively installed on the bottom mold worktable 41 and the mold changing worktable 42.

[0055] The base 11 is provided with a T-shaped slide groove, and the bottom mold workbench 41 and the mold changing workbench 42 are respectively provided with T-shaped sliding blocks matched with the T-shaped slide groove.

[0056] In actual use, the bottom mold workbench 41 and the mold changing workbench 42 are installed on the base 11 through T-shaped slide grooves and can move in the T-shaped slide grooves. A limit switch is installed in the T-shaped slide grooves. The cooperation between the T-shaped slide grooves and the T-shaped sliders enables the bottom mold workbench 41 and the mold changing workbench 42 to be quickly positioned and fixed on the base 11, which significantly shortens the mold changing time and improves production efficiency.

[0057] In a preferred embodiment of the present invention, the horizontal die-casting mechanism 5 includes a die-casting mechanism 1 51 and a die-casting mechanism 2 52 . The die-casting mechanism 2 51 has the same structure as the die-casting mechanism 3 52 , and is respectively installed on both sides of the base 11 .

[0058] The die-casting mechanism 51 includes a horizontal base 511, a support plate 512, a fixed mold plate 513, a horizontal main cylinder 514, a movable mold plate 515 and a mold workbench 516. The support plate 512 and the fixed mold plate 513 are respectively installed at both ends of the horizontal base 511; the horizontal main cylinder 514 is installed on the support plate 512, and the telescopic end of the horizontal main cylinder 514 is connected to the movable mold plate 515, and the movable mold plate 515 is located between the support plate 512 and the fixed mold plate 513. The mold workbench 516 is installed on the movable mold plate 515, and one end of the mold workbench 516 passes through the fixed mold plate 513 and is connected to a side movable mold 22.

[0059] The fixed mold plate 513 is provided with a hole for the mold workbench 516 to pass through. The mold workbench 516 includes a push rod and a push plate. One end of the push rod is mounted on the movable mold plate 515, and the other end is mounted on the push plate. The side movable mold 22 is mounted on the push plate.

[0060] In actual use, the horizontal main cylinder 514 drives the movable platen 515 to move, thereby driving the side movable mold 22 to move. The horizontal main cylinder 514 accurately controls the movement of the movable platen 515, ensuring the accuracy of mold clamping, thereby improving the quality and consistency of the casting, and the automated mold clamping and demolding process reduces the direct intervention of the operator, reduces the operating risk, and improves the safety of the working environment.

[0061] In a preferred embodiment of the present invention, the die-casting mechanism 51 further includes a transmission locking mechanism 517, and the telescopic end of the horizontal main cylinder 514 is connected to the movable template 515 through the transmission locking mechanism 517.

[0062] The transmission locking mechanism 517 includes a transmission plate 5171, a connecting rod 1 5172, a connecting rod 2 5173 and a connecting rod 3 5174. The transmission plate 5171 is installed at the telescopic end of the horizontal master cylinder 514. The two ends of the transmission plate 5171 are respectively hinged to a group of connecting rod 1 5172, and each group of connecting rod 1 5172 is respectively hinged to a group of connecting rod 2 5173; one end of the two groups of connecting rod 2 5173 are hinged to the support plate 512, and the other end is respectively hinged to a group of connecting rod 3 5174, and the two groups of connecting rod 3 5174 are both hinged to the movable template 515.

[0063] In actual use, the telescopic end of the horizontal master cylinder 514 first pushes the transmission plate 5171, and the movement of the transmission plate 5171 is transmitted to the second link 5173 through the hinged connecting rod 1 5172. The other end of the second link 5173 is hinged to the support plate 512 to maintain the stability of the structure. The movement of the second link 5173 is then transmitted to the movable plate 515 through the third link 5174 to achieve precise position adjustment of the movable plate 515.

[0064] In a preferred embodiment of the present invention, the die-casting mechanism 51 further includes a guide column 518, one end of which is fixed to the outside of the support plate 512, and the other end passes through the support plate 512, the movable plate 515 and the fixed plate 513 in sequence, and is fixed to the outside of the fixed plate 513.

[0065] A groove for sliding along the horizontal base 511 is provided at the bottom of the movable plate 515 , and a slide rail matching the groove is provided on the horizontal base 511 .

[0066] In actual use, a locking mechanism 15 is also installed at the connection between the guide post 518 and the support plate 512 and the fixed plate 513. The guide post 518 plays a guiding role in the movement of the movable plate 515, ensuring the accurate sliding of the movable plate 515 on the horizontal base 511, and improving the precision of the mold clamping.

[0067] In a preferred embodiment of the present invention, the injection system 6 includes an accumulator 61, a booster mechanism 62 and a hydraulic feeding cylinder 63. The accumulator 61 provides power to the hydraulic feeding cylinder 63 through the booster mechanism 62. The nozzle end of the hydraulic feeding cylinder 63 can pass through the base 11, the bottom mold workbench 41 or the mold changing workbench 42 in sequence, and be connected to the bottom mold 21 to deliver the metal liquid into the cavity of the bottom mold 21.

[0068] The bottom mold workbench 41 and the mold changing workbench 42 are both provided with mounting holes for the nozzle end of the hydraulic feeding cylinder 63 to pass through.

[0069] In actual use, the injection system 6 can adopt existing technology and be equipped with multiple groups of injection systems 6. The accumulator 61 can store pressure energy and release it quickly when needed. The booster mechanism 62 provides power to the hydraulic feeding cylinder 63 to ensure that the metal liquid is delivered into the cavity of the bottom mold 21 at high speed and stable pressure.

[0070] A heavy multi-directional die-casting method for an integrated vehicle body casting comprises the following steps:

[0071] S1. The vertical die-casting mechanism 3 drives the movable crossbeam 14 to move downward slowly to close the top of the die-casting mold 2, and the horizontal die-casting mechanism 5 slowly advances to close the left and right sides of the die-casting mold 2; wherein the closing speed of the vertical die-casting mechanism 3 and the horizontal die-casting mechanism 5 is controlled to achieve horizontal closing first and then vertical closing.

[0072] S2, after the mold is closed, the metal liquid is sent into the cavity of the die-casting mold 2 through the injection system 6 to complete the casting and cooling;

[0073] S3, after cooling is completed, the vertical die-casting mechanism 3 drives the movable crossbeam 14 to move upward to demold, and at the same time, the horizontal die-casting mechanism 5 demolds the left and right sides of the die-casting mold 2, and the core-pulling mechanism 7 pulls the cores on the front and back sides of the die-casting mold 2. After the core-pulling is completed, the material-taking robot takes out the entire part, and a die-casting is completed;

[0074] S4, the die-changing mechanism 4 removes the die-casting die 2 that has completed die-casting, and moves the new die-casting die to a designated position.

[0075] In a preferred embodiment of the present invention, the mold changing step in step S4 is as follows:

[0076] After the die-casting mold on the bottom mold workbench 41 is demolded, the bottom mold workbench 41 slides along the T-shaped slide groove on the base 11 to move the die-casting mold away from the mold changing workbench 42; a new die-casting mold is installed on the mold changing workbench 42, and the new die-casting mold is moved to the specified position along the T-shaped slide groove on the base 11.

[0077] In actual use, a limit switch is installed in the T-shaped slide groove on the base 11, and the limit switch is used to control the movement position of the bottom mold worktable 41 and the mold change worktable 42. A displacement sensor is provided on the vertical die casting mechanism 3, and the vertical mold closing position is determined by the displacement sensor. A displacement sensor is provided on the horizontal die casting mechanism 5 to determine the horizontal mold closing position.

[0078] Working process of heavy-duty multi-directional die-casting equipment for integrated car body castings:

[0079] First, the vertical main cylinder 31 in the vertical main direction drives the movable crossbeam 14 to move downward slowly for mold closing. The mold closing position is determined by the displacement sensor. The displacement sensor and the locking mechanism 15 dynamically adjust the mold closing accuracy and provide the mold closing force. The horizontal main cylinder 514 in the left and right directions drives the movable template 515 to slowly advance the mold closing. The mold closing position is determined by the displacement sensor. During this process, the transmission locking mechanism 517 straightens to provide the mold closing force. The mold closing process ends here.

[0080] During the mold closing process, the side movable mold 22 and the upper mold 23 in the vertical die-casting mechanism 3 and the horizontal die-casting mechanism 5 are controlled by the servo hydraulic cylinder and the displacement sensor to achieve horizontal mold closing first and vertical main direction mold closing later to avoid interference.

[0081] After the mold is closed, the multi-head injection system 6 uses synchronous control to send the metal liquid into the cavity of the bottom mold 21 through the hydraulic feeding cylinder 63 to complete the casting and cooling. After the cooling process is completed, the vertical main cylinder 31 drives the movable crossbeam 14 to go up for demolding, and the horizontal main cylinder 514 in the horizontal left and right directions drives the movable mold plate 515 to return for demolding. The core pulling mechanism 7 completes the front and rear core pulling, and after reaching the return setting displacement, the material taking robot takes out the entire part, thus completing a die casting.

[0082] Mold change process:

[0083] Before changing the mold, a new die-casting mold can be installed on the mold changing workbench 42 in advance. When the mold needs to be changed, the original die-casting mold is opened along the T-shaped slide groove on the base 11 along the bottom mold workbench 41 to the outside away from the mold changing workbench 42, and at the same time, the mold changing workbench 42 carries the new die-casting mold to the designated position along the T-shaped slide groove on the base 11; the new die-casting mold is automatically clamped with the side movable mold 22 and the upper mold 23 to complete the mold change.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heavy-duty multi-directional die-casting device for vehicle body integrated castings, characterized in that: The invention comprises a machine body (1), a die-casting mold (2), a vertical die-casting mechanism (3), a mold changing mechanism (4), a horizontal die-casting mechanism (5), an injection system (6) and a core pulling mechanism (7); the machine body (1) comprises a base (11), a column (12), a fixed beam (13) and a movable beam (14); the base (11) is mounted with a column (12); the top of the column (12) is mounted with a fixed beam (13); the bottom of the fixed beam (13) is mounted with a vertical die-casting mechanism (3); the telescopic end of the vertical die-casting mechanism (3) is connected to a movable beam (14) mounted on the column (12); the movable beam (14) moves up and down along the column (12) to perform vertical direction mold clamping on the die-casting mold (2); The die-casting mold (2) is mounted on a mold changing mechanism (4), and the mold changing mechanism (4) is mounted on a base (11); horizontal die-casting mechanisms (5) for horizontally closing the die-casting mold (2) are mounted on both sides of the base (11); an injection system (6) for feeding molten metal into the die-casting mold (2) is mounted below the base (11); and a set of core pulling mechanisms (7) are respectively arranged on the front and rear sides of the die-casting mold (2).

2. The heavy-duty multi-directional die-casting equipment for vehicle body integrated castings according to claim 1, characterized in that: The movable crossbeam (14) comprises a crossbeam body (141), an upper connecting plate (142) and a lower connecting plate (143); the upper connecting plate (142) is installed on the top of the crossbeam body (141), and the lower connecting plate (143) is installed on the bottom; the four corners of the upper connecting plate (142) and the lower connecting plate (143) are respectively slidably connected to the columns (12).

3. The heavy-duty multi-directional die-casting equipment for vehicle body integrated castings according to claim 1, characterized in that: The upright column (12) is provided with a locking mechanism (15) for locking the movable crossbeam (14), and the locking mechanism (15) is installed on the upper connecting plate (142).

4. The heavy-duty multi-directional die-casting equipment for vehicle body integrated castings according to claim 2, characterized in that: The die-casting mold (2) comprises a bottom mold (21), a side movable mold (22) and an upper mold (23); a group of core pulling mechanisms (7) are respectively installed on the front and rear sides of the bottom mold (21); a side movable mold (22) for connecting with a horizontal die-casting mechanism (5) is respectively installed on the left and right sides of the bottom mold (21); an upper mold (23) is installed above the bottom mold (21); and the upper mold (23) is connected to the bottom of the lower connecting plate (143).

5. The heavy-duty multi-directional die-casting equipment for vehicle body integrated castings according to claim 2, characterized in that: The vertical die-casting mechanism (3) comprises a vertical main cylinder (31), the top of which is mounted on the bottom of a fixed crossbeam (13), and the telescopic end of the vertical main cylinder (31) passes through an upper connecting plate (142) and is fixedly connected to the crossbeam body (141).

6. The heavy-duty multi-directional die-casting equipment for vehicle body integrated castings according to claim 1, characterized in that: The die changing mechanism (4) comprises a bottom die worktable (41) and a die changing worktable (42); the bottom die worktable (41) and the die changing worktable (42) are respectively slidably mounted on a base (11); and the die casting die (2) is respectively mounted on the bottom die worktable (41) and the die changing worktable (42).

7. The heavy-duty multi-directional die-casting equipment for vehicle body integrated castings according to claim 4, characterized in that: The horizontal die-casting mechanism (5) comprises a die-casting mechanism 1 (51) and a die-casting mechanism 2 (52); the die-casting mechanism 2 (52) has the same structure as the die-casting mechanism 3 (52) and is respectively installed on both sides of the base (11); The die-casting mechanism (51) comprises a horizontal base (511), a support plate (512), a fixed die plate (513), a horizontal main cylinder (514), a movable die plate (515) and a die workbench (516); the support plate (512) and the fixed die plate (513) are respectively installed at two ends of the horizontal base (511); the horizontal main cylinder (514) is installed on the support plate (512); the telescopic end of the horizontal main cylinder (514) is connected to the movable die plate (515); the movable die plate (515) is located between the support plate (512) and the fixed die plate (513); the die workbench (516) is installed on the movable die plate (515); one end of the die workbench (516) passes through the fixed die plate (513) and is connected to a side movable die (22).

8. The heavy-duty multi-directional die-casting equipment for vehicle body integrated castings according to claim 7, characterized in that: The die-casting mechanism (51) further comprises a transmission locking mechanism (517), and the telescopic end of the horizontal main cylinder (514) is connected to the movable die plate (515) via the transmission locking mechanism (517); The transmission locking mechanism (517) comprises a transmission plate (5171), a connecting rod one (5172), a connecting rod two (5173) and a connecting rod three (5174); the transmission plate (5171) is installed at the telescopic end of the horizontal master cylinder (514); two ends of the transmission plate (5171) are respectively hinged to a group of connecting rods one (5172); each group of connecting rods one (5172) is respectively hinged to a group of connecting rods two (5173); one end of the two groups of connecting rods two (5173) are hinged to the support plate (512), and the other end is respectively hinged to a group of connecting rods three (5174); the two groups of connecting rods three (5174) are both hinged to the movable template (515).

9. The heavy-duty multi-directional die-casting equipment for vehicle body integrated castings according to claim 7, characterized in that: The die-casting mechanism (51) further comprises a guide column (518), one end of which is fixed to the outside of the support plate (512), and the other end of which passes through the support plate (512), the movable die plate (515) and the fixed die plate (513) in sequence and is fixed to the outside of the fixed die plate (513).

10. A heavy multi-directional die casting method for vehicle body integrated castings, characterized in that: The steps include: S1, the vertical die-casting mechanism (3) drives the movable crossbeam (14) to move downward to close the top of the die-casting mold (2), and the horizontal die-casting mechanism (5) closes the die-casting mold (2) in the horizontal direction; wherein the closing speed of the vertical die-casting mechanism (3) and the horizontal die-casting mechanism (5) is controlled to achieve closing in the horizontal direction first and then in the vertical direction; S2, after the mold is closed, the metal liquid is sent into the cavity of the die-casting mold (2) through the injection system (6), and the casting is completed and cooled; S3. After cooling, the vertical die-casting mechanism (3) drives the movable crossbeam (14) to move upward to demould, and at the same time, the horizontal die-casting mechanism (5) demoulds the left and right sides of the die-casting mold (2), and the core-pulling mechanism (7) pulls the cores from the front and back sides of the die-casting mold (2). After the core-pulling is completed, the material-taking robot takes out the entire part, and a die-casting is completed; S4, the die-changing mechanism (4) removes the die-casting die (2) that has completed die-casting, and moves the new die-casting die (2) to a designated position.

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