A sliding limit device for integrated die-casting molds of new energy vehicles

Abstract

The present invention relates to the field of die-casting technology, and specifically to a sliding limit device for an integrated die-casting mold for new energy vehicles. The die-casting mold includes an upper mold and a lower mold; a lower pressing unit for driving the upper mold to move in a vertical direction is arranged on the upper part of the upper mold, and the lower pressing unit includes an extrusion cavity arranged on the upper part of the upper mold, and a pressure block is arranged in the extrusion cavity for moving in a vertical direction. The driving unit is arranged on the upper part of the extrusion cavity and extrudes the extrusion cavity after the upper mold and the lower mold are molded together. After the extrusion cavity is squeezed by the driving unit, the pressure block rises in a vertical direction, and the pressure block presses the upper mold through the extrusion cavity. The pressure block has an upper stop position in its moving stroke. When the pressure block rises to the upper stop position, the pressure of the pressure block on the extrusion cavity reaches the maximum, and the driving unit stops running at this time. The present invention ensures the sealing of the upper mold and the lower mold, and the pressing force is constant each time the mold is closed.

Description

Technical Field

[0001] The present invention relates to the technical field of die casting, and in particular to a sliding limit device for an integrated die casting die for a new energy vehicle. Background Art

[0002] Chinese patent CN205238487U discloses a mold opening and closing limit device, which solves the problem of low mold closing accuracy in the prior art. The key points of its technical solution are a mold opening and closing limit device, including a movable mold plate, a fixed mold plate and a plurality of guide members. A plurality of first guide blocks are arranged on the side wall of the movable mold plate, and a second guide block corresponding to the first guide block is arranged on the side wall of the fixed mold plate. Each guide member passes through the first guide block and the second guide block that are relatively arranged in a direction parallel to the movement of the movable mold plate, and slides back and forth between the first guide block and the second guide block, thereby limiting the movable mold plate and the fixed mold plate in the direction of opening and closing and in the vertical direction thereof, preventing the phenomenon of misalignment or offset between the molds during the process of opening and closing, so as to improve the accuracy of the alignment of the movable mold plate and the fixed mold plate, and thus improve the qualified rate of products produced by the mold.

[0003] However, the above technical solution has limitations in practical application. Because products of different sizes and dimensions need to be manufactured during the production process, when it is necessary to limit the position of molds of other sizes, this device cannot adapt to these changes and needs to be replaced with a new mold limiter that meets the size requirements. This not only causes a waste of resources, but also reduces production efficiency and makes the mold closing process time-consuming and labor-intensive.

[0004] Chinese patent CN220661468U discloses a combined sliding limit structure for mold closing, including a motor box, a base is fixedly connected to the bottom of the inner cavity of the motor box, a main motor is fixedly connected to the bottom of the inner cavity of the base, one end of the output shaft of the main motor is fixedly connected to a rotating shaft through a coupling, the surface of the rotating shaft is rotatably connected to a turntable, both sides of the base extend upward and are fixedly connected to the bottom of the turntable, a plurality of slide grooves are evenly distributed on the surface of the turntable, a rotating plate is fixedly connected to the top of the rotating shaft, four fixed rods are fixedly connected to the bottom of the rotating plate, the surface of the fixed rod is rotatably connected to four transmission rods, and the other end of the transmission rod is rotatably connected to the slider assembly, so that the slider assembly can slide inside the slide groove.

[0005] In the above scheme, a screw is used to drive the limit plate to move. When closing the mold, in order to ensure the sealing between the upper and lower molds, sufficient pressure needs to be applied to the limit plate, which can easily cause significant wear on the threads on the screw, thereby greatly shortening the service life of the screw and increasing the frequency of maintenance. It is difficult to ensure the sealing of the upper and lower molds by only using a screw to drive the limit plate. In addition, the limit mechanism in the above scheme lacks a self-locking function when limiting the mold. It is easy to become loose after long-term use, which may cause the mold to fall off, and it is impossible to reasonably control the clamping force when closing the mold. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a sliding limit device for an integrated die-casting mold for new energy vehicles in view of the current status of the prior art.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a sliding limit device for an integrated die-casting mold for new energy vehicles is proposed, wherein the die-casting mold comprises an upper mold and a lower mold; a lower pressing unit for driving the upper mold to move in a vertical direction is arranged on the upper part of the upper mold, and the lower pressing unit comprises an extrusion chamber, a pressure block and a driving unit arranged on the upper part of the upper mold, the pressure block is arranged in the extrusion chamber for movement in the vertical direction, the driving unit is arranged on the upper part of the extrusion chamber and extrude the extrusion chamber after the upper mold and the lower mold are closed, after the extrusion chamber is extruded by the driving unit, the pressure block rises in the vertical direction, and the pressure block presses the upper mold through the extrusion chamber, and the pressure block has an upper stop position in its moving stroke, and when the pressure block rises to the upper stop position, the pressure of the pressure block on the extrusion chamber reaches the maximum, and the driving unit stops running at this time.

[0008] In the above-mentioned sliding limit device for an integrated die-casting mold for new energy vehicles, an extrusion shell is arranged on the upper part of the upper mold, an opening is arranged on the upper part of the extrusion shell, an extrusion plate is arranged at the opening for sliding along the vertical direction, the extrusion plate and the extrusion shell together constitute an extrusion cavity, the pressure block is located above the extrusion plate, a telescopic unit is vertically arranged at the bottom of the extrusion shell, the telescopic unit penetrates the extrusion plate along the vertical direction and slides with the extrusion plate, hydraulic oil is stored in the extrusion cavity, hydraulic oil is also stored in the telescopic unit, the extrusion cavity is connected to the telescopic unit, and when the extrusion cavity is squeezed, the telescopic unit extends.

[0009] In the above-mentioned sliding limit device for an integrated die-casting mold for new energy vehicles, a trigger unit is arranged on the upper part of the pressure block, and the trigger unit includes a trigger button. A controller is arranged on one side of the trigger button. After the trigger button is triggered, the controller controls the driving unit to stop running. After the pressure block is squeezed in the extrusion cavity, it rises in the vertical direction. When the pressure block reaches the upper stop position, the pressure block triggers the trigger button.

[0010] In the above-mentioned sliding limit device for an integrated die-casting mold for new energy vehicles, the telescopic unit includes a telescopic sleeve vertically fixed at the bottom of an extrusion shell and a telescopic rod slidably arranged in the telescopic sleeve along the extension direction of the telescopic sleeve. A connecting groove is provided on the side wall of the telescopic sleeve located in the extrusion shell. The telescopic sleeve is connected to the extrusion cavity through the connecting groove, and the upper part of the telescopic rod is fixedly connected to the bottom of the pressure block.

[0011] In the above-mentioned sliding limit device for an integrated die-casting mold for new energy vehicles, a clamping unit for clamping the upper mold is arranged between the lower pressure unit and the upper mold, and the clamping unit includes a clamping shell, which is fixedly arranged at the lower part of the lower pressure unit, and a placement groove for placing the upper mold is opened at the bottom of the clamping shell.

[0012] In the above-mentioned sliding limit device for an integrated die-casting mold for new energy vehicles, a clamping block is horizontally slidably arranged on the side wall of the placement groove, a clamping groove is horizontally opened on the side wall of the upper mold, the clamping block is clamped and matched with the clamping groove, a pressure pipeline is arranged on one side of the clamping block, and a weight block is vertically slidably arranged at one end of the pressure pipeline away from the clamping block, hydraulic oil is arranged in the pressure pipeline, and the weight block pushes the clamping block to extend from the side wall of the placement groove in a horizontal direction by its own gravity, and a chamfer is opened on the extended end of the clamping block.

[0013] In the above-mentioned sliding limit device for the integrated die-casting mold of new energy vehicles, an unlocking unit is arranged on the side of the pressure pipeline, the unlocking unit and the pressure pipeline are interconnected, and a switch valve is arranged on the side of the connection between the unlocking unit and the pressure pipeline facing the weight block, and the switch valve is arranged on the pressure pipeline. The switch valve is in an open state when the upper mold is installed, and is in a closed state when the upper mold is removed.

[0014] In the above-mentioned sliding limit device for an integrated die-casting mold for new energy vehicles, the unlocking unit includes: a branch connected to the pressure pipeline, the branch is arranged on the side wall of the pressure pipeline; a sliding block, which is slidably arranged on the branch; a pump body, which is arranged at one end of the branch away from the pressure pipeline, and gas is stored in the branch between the sliding block and the pump body. The pump body allows the sliding block to slide in the branch by extracting gas out of the branch or pumping gas into the branch.

[0015] In the above-mentioned sliding limit device for the integrated die-casting mold of new energy vehicles, a clamping unit for clamping the lower mold is arranged at the bottom of the lower mold, and a clamping groove is arranged in the clamping unit. The clamping groove is a rectangular structure, and the lower mold is arranged in the clamping groove.

[0016] In the above-mentioned sliding limit device for an integrated die-casting mold for new energy vehicles, a threaded rod is rotatably arranged in a clamping groove along the diagonal extension direction of the clamping groove, and the threads on the threaded rod are evenly divided into two sections, and the spiral directions of the two sections of threads are opposite. Clamping frames are respectively arranged on the threaded rods corresponding to the two sections of threads, and the clamping frames cooperate with the threads of the threaded rod to clamp the lower mold.

[0017] Compared with the prior art, when the present invention is in use, the driving unit drives the upper mold to move toward the lower mold. After the upper mold contacts the lower mold, the driving unit continues to drive the upper mold to press the lower mold. The extrusion chamber is composed of an extrusion shell and an extrusion plate arranged above the upper mold, and hydraulic oil is stored in the extrusion chamber. The driving end of the driving unit is fixedly connected to the extrusion plate, and a telescopic unit is arranged at the bottom of the extrusion shell, and the telescopic unit penetrates from the extrusion plate in a vertical direction and slidably cooperates with the extrusion plate. When the extrusion chamber is squeezed, the driving unit in the extrusion chamber pushes the extrusion plate to descend, and the extrusion plate squeezes the hydraulic oil in the extrusion shell. In this way, the volume of the extrusion chamber formed by the extrusion plate and the extrusion shell gradually decreases, which means that the extrusion chamber is squeezed at this time, so that the hydraulic oil in the extrusion chamber enters the telescopic unit, and the telescopic unit extends under the push of the hydraulic oil. Since the upper part of the telescopic unit is fixedly connected to the pressure block Then, when the telescopic unit is extended, it can drive the pressure block to rise in the vertical direction. As the pressure block rises, the gravity of the pressure block reacts in the extrusion chamber, so that the upper mold obtains greater pressure, and when the pressure block reaches the upper stop, the driving unit stops moving. In this way, after the pressure block reaches the upper stop, the pressure of the pressure block on the upper mold reaches the maximum. In actual production, the rated clamping force of the upper and lower molds in mold closing is known. In this way, by selecting a pressure block with the same rated clamping force, it is ensured that the upper and lower molds just reach the rated clamping force after mold closing. In traditional hydraulic mold closing, in order to ensure that the clamping force just reaches the rated clamping force, the speed of increasing the pressure is slow, and the hydraulic system needs to be maintained regularly, which is costly. After the extrusion chamber and the pressure block are set, the sealing of the upper and lower molds can be guaranteed, and the clamping force is constant during each mold closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of a sliding limit device for an integrated die-casting mold for new energy vehicles;

[0019] Figure 2 It is a side view of a sliding limit device for an integrated die-casting die for new energy vehicles;

[0020] Figure 3 It is a sliding limit device for integrated die-casting molds of new energy vehicles. Figure 2 Schematic cross-sectional view at AA in the middle;

[0021] Figure 4 A cutaway stereoscopic diagram of a sliding limit device for an integrated die-casting die for new energy vehicles Figure 1 ;

[0022] Figure 5 It is a sliding limit device for integrated die-casting molds of new energy vehicles. Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0023] Figure 6 A cutaway stereoscopic diagram of a sliding limit device for an integrated die-casting die for new energy vehicles Figure 2 ;

[0024] Figure 7 It is a sliding limit device for integrated die-casting molds of new energy vehicles. Figure 6 A partial enlarged schematic diagram of point C in the middle;

[0025] Figure 8 A cutaway stereoscopic diagram of a sliding limit device for an integrated die-casting die for new energy vehicles Figure 3 ;

[0026] Fig. 9 It is a sliding limit device for integrated die-casting molds of new energy vehicles. Figure 8 The local enlarged schematic diagram of the middle D;

[0027] Fig.10 It is a three-dimensional schematic diagram of a clamping unit of a sliding limit device for an integrated die-casting mold for new energy vehicles;

[0028] Fig.11 The present invention is a three-dimensional schematic diagram of a clamping unit of a sliding limit device for an integrated die-casting mold for new energy vehicles.

[0029] The numbers in the figure are: 1. upper mold; 2. lower mold; 3. lower pressure unit; 31. extrusion chamber; 311. extrusion shell; 312. extrusion plate; 313. telescopic unit; 3131. telescopic sleeve; 3132. telescopic rod; 32. pressure block; 33. drive unit; 34. trigger unit; 341. trigger button; 342. bracket; 4. snap-on unit; 41. snap-on shell; 411. placement groove; 42. snap-on block; 43. snap-on groove; 44. pressure pipeline; 45. weight block; 46. unlocking unit; 461. branch; 462. sliding block; 463. pump body; 47. switch valve; 5. clamping unit; 51. clamping groove; 52. threaded rod; 53. clamping frame. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] Reference Figure 1-Figure 11 : A sliding limit device for an integrated die-casting mold for new energy vehicles, the die-casting mold includes an upper mold 1 and a lower mold 2; a lower pressing unit 3 is arranged on the upper part of the upper mold 1 to drive the upper mold 1 to move in the vertical direction, the lower pressing unit 3 includes an extrusion chamber 31 arranged on the upper part of the upper mold 1, a pressure block 32 is arranged in the extrusion chamber 31 for movement in the vertical direction, a driving unit 33 is arranged on the upper part of the extrusion chamber 31 and extrude the extrusion chamber 31 after the upper mold 1 and the lower mold 2 are molded together, after the extrusion chamber 31 is squeezed by the driving unit 33, the pressure block 32 rises in the vertical direction, the pressure block 32 presses the upper mold 1 through the extrusion chamber 31, the pressure block 32 has an upper stop position in its moving stroke, when the pressure block 32 rises to the upper stop position, the pressure of the pressure block 32 on the extrusion chamber 31 reaches the maximum, and at this time the driving unit 33 stops running.

[0032] The integrated die-casting mold is composed of an upper mold 1 and a lower mold 2. The upper mold 1 and the lower mold 2 are arranged in a vertical direction. The upper mold 1 is located above the lower mold 2. During the processing, the lower mold 2 is in a stationary state, and the upper mold 1 moves toward the lower mold 2 in the vertical direction. When the upper mold 1 and the lower mold 2 are closed, a mold cavity is formed between the upper mold 1 and the lower mold 2. Subsequently, molten metal is injected into the mold cavity and then cooled to complete the die-casting. However, the above process needs to ensure the sealing between the upper mold 1 and the lower mold 2. If the sealing is low, the molten metal is likely to leak out during die-casting. On the contrary, if the upper mold 1 exerts excessive pressure on the lower mold 2 in order to ensure the sealing, it is easy to cause damage to the upper mold 1 and the lower mold 2 when the mold is closed. In order to avoid the above situation, a pressing unit 3 is provided on the upper mold 1, and the pressing unit 3 includes a driving unit 33. The driving unit 33 is preferably a linear cylinder. The driving unit 33 is vertically arranged above the upper mold 1. The working principle of the pressing unit 3 is as follows: when in use, the driving unit 33 drives the upper mold 1 to move toward the lower mold 2. After the upper mold 1 contacts the lower mold 2, the driving unit 33 continues to drive the upper mold 1 to press the lower mold 2. The extrusion cavity 31 is composed of an extrusion shell 311 and an extrusion plate 312 arranged above the upper mold 1, and hydraulic oil is stored in the extrusion cavity 31. The driving end of the driving unit 33 is fixedly connected to the extrusion plate 312. A telescopic unit 313 is arranged at the bottom of the extrusion shell 311, and the telescopic unit 313 is vertically arranged. The extrusion plate 312 is passed through in a straight direction and slidably cooperates with the extrusion plate 312. When the driving unit 33 pushes the extrusion plate 312 to descend, the extrusion plate 312 squeezes the hydraulic oil in the extrusion shell 311, so that the volume of the extrusion chamber 31 formed by the extrusion plate 312 and the extrusion shell 311 gradually decreases, which means that the extrusion chamber 31 is squeezed at this time, so that the hydraulic oil in the extrusion chamber 31 enters the telescopic unit 313, and the telescopic unit 313 extends under the push of the hydraulic oil. Since the upper part of the telescopic unit 313 is fixedly connected to the pressure block 32, the telescopic unit 313 can drive the pressure block 32 to rise in the vertical direction when it extends. As the pressure block 32 rises, the gravity of the pressure block 32 reacts in the extrusion chamber 31, so that the upper mold 1 obtains a greater pressure force, and when the pressure block 32 reaches the upper stop position, the drive unit 33 stops moving, so that after the pressure block 32 reaches the upper stop position, the pressure of the pressure block 32 on the upper mold 1 reaches the maximum. In actual production, the rated clamping force of the upper mold 1 and the lower mold 2 in mold closing is known, so by selecting a pressure block 32 with the same magnitude as the rated clamping force, it is ensured that the upper mold 1 and the lower mold 2 just reach the rated clamping force after mold closing. In traditional hydraulic mold closing, in order to ensure that the clamping force just reaches the rated clamping force, the speed of increasing the pressure is slow, and the hydraulic system needs to be maintained regularly, which is costly. After the extrusion chamber 31 and the pressure block 32 are set, the sealing of the upper mold 1 and the lower mold 2 can be guaranteed, and the clamping force is constant during each mold closing.

[0033] Reference Figure 3 , Figure 4 , Figure 8 and Fig. 9 An extrusion shell 311 is arranged on the upper part of the upper mold 1, and an opening is arranged on the upper part of the extrusion shell 311. An extrusion plate 312 is slidably arranged at the opening along the vertical direction. The extrusion plate 312 and the extrusion shell 311 together constitute an extrusion chamber 31. The pressure block 32 is located above the extrusion plate 312. A telescopic unit 313 is vertically arranged at the bottom of the extrusion shell 311. The telescopic unit 313 penetrates the extrusion plate 312 along the vertical direction and slides with the extrusion plate 312. Hydraulic oil is stored in the extrusion chamber 31, and hydraulic oil is also stored in the telescopic unit 313. The extrusion chamber 31 is connected to the telescopic unit 313. When the extrusion chamber 31 is extruded, the telescopic unit 313 extends.

[0034] The extrusion plate 312 will not slide out from the opening of the extrusion shell 311 , thus ensuring that the extrusion plate 312 can always be located in the extrusion shell 311 when the extrusion plate 312 slides.

[0035] Reference Figure 6 , Figure 8 and Fig. 9 A trigger unit 34 is arranged on the upper part of the pressure block 32, and the trigger unit 34 includes a trigger button 341. A controller is arranged on one side of the trigger button 341. After the trigger button 341 is triggered, the controller controls the driving unit 33 to stop running. After the pressure block 32 is squeezed in the extrusion chamber 31, it rises in the vertical direction. When the pressure block 32 reaches the upper stop position, the pressure block 32 triggers the trigger button 341.

[0036] The trigger unit 34 also includes a bracket 342, which is arranged above the pressure block 32, and the trigger button 341 is fixedly arranged at the lower part of the bracket 342. When the driving unit 33 drives the upper mold 1 to move toward the lower mold 2 and the upper mold 1 and the lower mold 2 have not yet contacted, the pressure block 32 is located at the lower stop position. After the upper mold 1 and the lower mold 2 are in contact, the lower mold 2 and the upper mold 1 complete the mold closing. In order to ensure the sealing of the upper mold 1 and the lower mold 2 after the mold closing, the driving unit 33 continues to drive the upper mold 1 downward, and the driving unit 33 presses the upper mold 1 through the extrusion cavity 31, and the extrusion cavity 31 is pressed. 1 contains hydraulic oil. When the extrusion cavity 31 begins to be extruded, the upper mold 1 and the lower mold 2 are closed. At this time, the driving unit 33 continues to extrude the extrusion cavity 31. The hydraulic oil in the extrusion cavity 31 lifts the pressure block 32. The gravity of the pressure block 32 acts on the upper mold 1. Since the driving unit 33 is always in an extrusion state for the extrusion cavity 31, the gravity of the lifted pressure block 32 always acts on the upper mold 1, thereby achieving pressure maintenance for the upper mold 1. Since the weight of the pressure block 32 is constant, the pressure of the pressure block 32 on the extrusion cavity 31 is constant after the driving unit 33 stops running each time.

[0037] Reference Figure 6 and Figure 7 The telescopic unit 313 includes a telescopic sleeve 3131 vertically fixed at the bottom of the extrusion shell 311 and a telescopic rod 3132 slidably arranged in the telescopic sleeve 3131 along the extension direction of the telescopic sleeve 3131. The telescopic sleeve 3131 is located in the extrusion shell 311 and a connecting groove is opened on the side wall. The telescopic sleeve 3131 is connected to the extrusion chamber 31 through the connecting groove. The upper part of the telescopic rod 3132 is fixedly connected to the bottom of the pressure block 32.

[0038] When the upper mold 1 and the lower mold 2 are completed, the driving unit 33 continues to press the extrusion plate 312, and the extrusion plate 312 presses the hydraulic oil in the extrusion chamber 31 into the telescopic sleeve 3131 through the connecting groove, so that the telescopic rod 3132 slidably arranged in the telescopic sleeve 3131 is lifted up under the pressure of the hydraulic oil. It is worth noting that since the extrusion plate 312 always slides in the extrusion shell 311 in the vertical direction, when the upper mold 1 and the lower mold 2 are not in contact, the extrusion plate 312 is located at the opening of the extrusion shell 311, and the telescopic sleeve 3131 passes through the extrusion plate 312 located at the opening of the extrusion shell 311, and the extrusion plate 312 and the telescopic sleeve 3131 slide in cooperation.

[0039] Reference Figure 8 and Fig.10 : A clamping unit 4 for clamping the upper mold 1 is arranged between the lower pressing unit 3 and the upper mold 1, and the clamping unit 4 includes a clamping shell 41, which is fixedly arranged at the lower part of the lower pressing unit 3, and a placement groove 411 for placing the upper mold 1 is opened at the bottom of the clamping shell 41.

[0040] Reference Figure 1 and Figure 5 A clamping block 42 is horizontally slidably arranged on the side wall of the placement groove 411, and a clamping groove 43 is horizontally opened on the side wall of the upper mold 1. The clamping block 42 is clamped and matched with the clamping groove 43. A pressure line 44 is arranged on one side of the clamping block 42. A weight block 45 is vertically slidably arranged at one end of the pressure line 44 away from the clamping block 42. Hydraulic oil is arranged in the pressure line 44. The weight block 45 pushes the clamping block 42 to extend from the side wall of the placement groove 411 in a horizontal direction by its own gravity, and a chamfer is opened on the extended end of the clamping block 42.

[0041] When installing the upper mold 1, the traditional installation steps of the upper mold 1 are cumbersome and the structure is complicated. In order to improve the convenience of installation, a clamping block 42, a clamping groove 43, a pressure pipeline 44 and a weight block 45 are set. The clamping block 42 slidably set on the side wall of the placement groove 411 is always in an extended state under the gravity of the weight block 45, and the end of the clamping block 42 extending from the placement groove 411 is provided with a chamfer. In this way, when installing the upper mold 1, the upper mold 1 is placed directly below the placement groove 411, and then the upper mold 1 is lifted so that the upper mold 1 slides into the placement groove 411 in the vertical direction. The upper mold 1 slides into the placement groove 411, and the clamping block 42 extending from the side wall of the placement groove 411 can be pushed open by the upper mold 1, that is, under the action of the upper mold 1, the clamping block 42 slides into the pressure line 44, and the weight block 45 located in the pressure line 44 rises under the thrust of the hydraulic oil of the pressure line 44. When the upper mold 1 continues to rise, the clamping groove 43 on the side wall of the upper mold 1 moves to one side of the clamping block 42, and the clamping block 42 is pushed into the clamping groove 43 under the action of the weight block 45, thereby completing the clamping of the upper mold 1 and completing the installation of the upper mold 1.

[0042] Reference Figure 4 and Figure 5 : An unlocking unit 46 is provided on the side of the pressure pipeline 44, and the unlocking unit 46 and the pressure pipeline 44 are connected to each other. A switch valve 47 is provided on the side of the connection between the unlocking unit 46 and the pressure pipeline 44 facing the weight block 45. The switch valve 47 is provided on the pressure pipeline 44. The switch valve 47 is in an open state when the upper mold 1 is installed, and is in a closed state when the upper mold 1 is removed.

[0043] Reference Figure 4 and Figure 5 The unlocking unit 46 includes: a branch 461 connected to the pressure pipeline 44, and the branch 461 is arranged on the side wall of the pressure pipeline 44; a sliding block 462, which is slidably arranged on the branch 461; a pump body 463, which is arranged at one end of the branch 461 away from the pressure pipeline 44, and gas is stored in the branch 461 between the sliding block 462 and the pump body 463. The pump body 463 allows the sliding block 462 to slide in the branch 461 by extracting gas from the branch 461 or pumping gas into the branch 461.

[0044] When installing the upper mold 1, the switch valve 47 is in the open state, and the sliding block 462 is located on the side of the branch 461 close to the pressure pipeline 44. At this time, when the upper mold 1 rises and is placed in the placement groove 411, the upper mold 1 squeezes the clamping block 42 open, so that the clamping block 42 slides into the pressure pipeline 44, and the hydraulic oil in the pressure pipeline 44 can lift the weight block 45 in the vertical direction. When the clamping groove 43 on the upper mold 1 moves to one side of the clamping block 42, the weight block 45 will retract the clamping block 42 in the pressure pipeline 44 and push it out. When the upper mold 1 in the placement groove 411 needs to be removed, the switch valve 47 is closed. At this time, the clamping block 42 is in the pressure pipeline When sliding in branch 461, it will not affect the weight block 45, and the gravity of the weight block 45 cannot be transmitted to the clamping block 42 through the hydraulic oil in the pressure line 44. At this time, the pump body 463 starts, and the pump body 463 extracts the gas in the branch 461. The sliding block 462 slides in the branch 461 along the extension direction of the branch 461. At this time, the sliding block 462 is getting farther and farther away from the connection between the branch 461 and the pressure line 44, and the hydraulic oil in the pressure line 44 is drawn into the branch 461 by the sliding block 462, so that the clamping block 42 can slide into the pressure line 44, thereby ensuring that the upper mold 1 can be smoothly removed from the placement groove 411.

[0045] Reference Figure 6 and Fig.11 : A clamping unit 5 for clamping the lower mold 2 is arranged at the bottom of the lower mold 2, and a clamping groove 51 is arranged in the clamping unit 5. The clamping groove 51 is a rectangular structure, and the lower mold 2 is arranged in the clamping groove 51.

[0046] Reference Fig.11 : A threaded rod 52 is rotatably arranged in the clamping groove 51 along the diagonal extension direction of the clamping groove 51. The thread on the threaded rod 52 is evenly divided into two sections. The spiral directions of the two sections of thread are opposite. Clamping frames 53 are respectively arranged on the threaded rod 52 corresponding to the two sections of thread. The clamping frames 53 are threadably matched with the threaded rod 52, and the clamping frames 53 clamp the lower mold 2.

[0047] The end of the threaded rod 52 is provided with a motor for driving the threaded rod 52 to rotate. When placing the lower mold 2, the lower mold 2 is first placed in the clamping groove 51, and then the threaded rod 52 is driven by the motor. Driven by the threaded rod 52, the two clamping frames 53 arranged on the threaded rod 52 are synchronously approached to each other. Since the lower mold 2 is basically a rectangular structure, the positioning of the lower mold 2 is completed when the two clamping frames 53 clamp the lower mold 2. At this time, the lower mold 2 is just located directly below the upper mold 1.

[0048] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0049] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0052] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the scope defined by the spirit of the present invention.

Claims

1. A sliding limit device for an integrated die-casting die for a new energy vehicle, the die-casting die comprising an upper die (1) and a lower die (2); It is characterized in that A lower pressing unit (3) is arranged at the upper part of the upper mold (1) to drive the upper mold (1) to move in a vertical direction. The lower pressing unit (3) comprises an extrusion chamber (31) arranged at the upper part of the upper mold (1), a pressure block (32) and a driving unit (33). The pressure block (32) is arranged in the extrusion chamber (31) to move in a vertical direction. The driving unit (33) is arranged at the upper part of the extrusion chamber (31) and extrudes the extrusion chamber (31) after the upper mold (1) and the lower mold (2) are closed. After the extrusion chamber (31) is extruded by the driving unit (33), the pressure block (32) rises in a vertical direction. The pressure block (32) presses the upper mold (1) through the extrusion chamber (31). The pressure block (32) has an upper stop position in its moving stroke. When the pressure block (32) rises to the upper stop position, the pressure of the pressure block (32) on the extrusion chamber (31) reaches a maximum, and the driving unit (33) stops running at this time. An extrusion shell (311) is arranged at the upper part of the upper mold (1), an opening is arranged at the upper part of the extrusion shell (311), an extrusion plate (312) is slidably arranged at the opening in a vertical direction, the extrusion plate (312) and the extrusion shell (311) together constitute an extrusion chamber (31), the pressure block (32) is located above the extrusion plate (312), a telescopic unit (313) is vertically arranged at the bottom of the extrusion shell (311), the telescopic unit (313) penetrates the extrusion plate (312) in a vertical direction and slidably cooperates with the extrusion plate (312), hydraulic oil is stored in the extrusion chamber (31), hydraulic oil is also stored in the telescopic unit (313), the extrusion chamber (31) and the telescopic unit (313) are connected, and when the extrusion chamber (31) is extruded, the telescopic unit (313) is extended; A trigger unit (34) is arranged on the upper part of the pressure block (32), the trigger unit (34) comprising a trigger button (341), a controller is arranged on one side of the trigger button (341), and when the trigger button (341) is triggered, the controller controls the driving unit (33) to stop running, and the pressure block (32) rises in a vertical direction after being squeezed in the squeezing chamber (31), and when the pressure block (32) reaches the upper stop position, the pressure block (32) triggers the trigger button (341); The telescopic unit (313) comprises a telescopic sleeve (3131) vertically fixedly arranged at the bottom of the extrusion shell (311) and a telescopic rod (3132) slidably arranged in the telescopic sleeve (3131) along the extension direction of the telescopic sleeve (3131); a communication groove is provided on the side wall of the telescopic sleeve (3131) located in the extrusion shell (311); the telescopic sleeve (3131) is connected to the extrusion chamber (31) through the communication groove; and the upper part of the telescopic rod (3132) is fixedly connected to the bottom of the pressure block (32).

2. A sliding limiter for an integrated die-casting die for a new energy vehicle as claimed in claim 1, It is characterized in that A clamping unit (4) for clamping the upper mold (1) is provided between the lower pressing unit (3) and the upper mold (1), the clamping unit (4) comprising a clamping shell (41), the clamping shell (41) being fixedly arranged at the bottom of the lower pressing unit (3), and a placement groove (411) for placing the upper mold (1) is provided at the bottom of the clamping shell (41).

3. A sliding limiter for an integrated die-casting die for a new energy vehicle as claimed in claim 2, It is characterized in that A clamping block (42) is horizontally slidably arranged on the side wall of the placement groove (411), a clamping groove (43) is horizontally opened on the side wall of the upper mold (1), the clamping block (42) is clamped and matched with the clamping groove (43), a pressure pipeline (44) is arranged on one side of the clamping block (42), a weight block (45) is vertically slidably arranged at one end of the pressure pipeline (44) away from the clamping block (42), hydraulic oil is arranged in the pressure pipeline (44), the weight block (45) pushes the clamping block (42) to extend from the side wall of the placement groove (411) in a horizontal direction by its own gravity, and a chamfer is opened on the extended end of the clamping block (42).

4. A sliding limiter for an integrated die-casting die for a new energy vehicle as claimed in claim 3, It is characterized in that An unlocking unit (46) is provided on the side of the pressure pipeline (44); the unlocking unit (46) and the pressure pipeline (44) are connected to each other; a switch valve (47) is provided on the side of the connection between the unlocking unit (46) and the pressure pipeline (44) facing the weight block (45); the switch valve (47) is provided on the pressure pipeline (44); the switch valve (47) is in an open state when the upper mold (1) is installed, and is in a closed state when the upper mold (1) is removed.

5. A sliding limiter for an integrated die-casting die for a new energy vehicle as claimed in claim 4, It is characterized in that The unlocking unit (46) comprises: A branch line (461) in communication with the pressure line (44), wherein the branch line (461) is arranged on a side wall of the pressure line (44); A sliding block (462) is slidably disposed on the branch (461); The pump body (463) is arranged at one end of the branch (461) away from the pressure pipeline (44). Gas is stored in the branch (461) between the sliding block (462) and the pump body (463). The pump body (463) causes the sliding block (462) to slide in the branch (461) by extracting gas from the branch (461) or pumping gas into the branch (461).

6. A sliding limiter for an integrated die-casting die for a new energy vehicle as claimed in claim 1, It is characterized in that A clamping unit (5) for clamping the lower mold (2) is arranged at the bottom of the lower mold (2), and a clamping groove (51) is arranged in the clamping unit (5). The clamping groove (51) is a rectangular structure, and the lower mold (2) is arranged in the clamping groove (51).

7. A sliding limiter for an integrated die-casting die for a new energy vehicle as claimed in claim 6, It is characterized in that A threaded rod (52) is rotatably arranged in the clamping groove (51) along the diagonal extension direction of the clamping groove (51), the thread on the threaded rod (52) is evenly divided into two sections, the spiral directions of the two sections of thread are opposite, and clamping frames (53) are respectively arranged on the threaded rod (52) corresponding to the two sections of thread, the clamping frame (53) is threadably matched with the threaded rod (52), and the clamping frame (53) clamps the lower mold (2).

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