Tilt-casting machine upper die flap locking and opening device

Abstract

The utility model relates to a kind of tilting casting machine upper die turnover plate locking opening and closing device, including casting mould rack, the upper die support member capable of overturning is equipped in the top of casting mould rack, the upper die of mould is installed in the bottom of upper die support member, the top of casting mould rack is also equipped with the drive mechanism of driving the upper die support member overturning and the locking mechanism for locking upper die support member, the locking mechanism when locking upper die support frame, drive mechanism cannot drive upper die support member overturning;Upper die support member of the utility model is through connecting support member, compensates height difference, ensure that there is no interference between upper die support member and rack in overturning process, movement trajectory is more stable;By locking mechanism, actively limit upper die support member displacement, replace the limiting mode by only relying on mould dead weight, effectively prevent the deviation caused by equipment vibration or external force interference, improve moulding precision and security.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy casting technology, specifically to a locking and opening device for the upper mold flap of an inclined casting machine. Background Technology

[0002] Gravity casting is a metal forming process in which molten metal, such as aluminum alloy, is poured into a mold under its own weight under the influence of Earth's gravity, without the need for additional pressure; hence, it is also called gravity casting. This process is low-cost and simple to operate, and is widely used in fields such as automotive parts. The advantages of gravity casting include high surface finish, fewer internal pores, and the ability to undergo heat treatment to optimize physical properties. The main components of gravity casting include a gating system, mold assembly, and auxiliary components. The gating system receives the molten metal through a pouring cup, guides the flow through a sprue, distributes the metal through a runner, and precisely controls entry into the mold cavity through an ingate, ensuring smooth filling, venting, and regulating the solidification sequence. Furthermore, the mold opening and closing mechanism manages the mold's movement for forming and demolding, the cooling system accelerates casting solidification to shorten the cycle time, and the frame and worktable provide a stable platform and support angle adjustments.

[0003] The authorization announcement number CN223198047U discloses an aluminum alloy gravity casting device. According to its specification and drawings, the bottom of the gravity casting machine is fixedly connected to a flipping mechanism. The flipping mechanism includes an upper cover and a base. A hydraulic top is connected between the upper cover and the base. The lower surface of the upper cover is rotatably connected to the piston rod of the hydraulic top. The bottom of the hydraulic top is rotatably connected to the bottom of the base.

[0004] However, there are still some limitations in its solution: 1. The flipping mechanism is obviously unstable during the flipping process due to its high center of gravity, which causes inconvenience to the production process; 2. When the entire grabbing mechanism is not flipped, it is only limited by the weight of the mold to prevent the flipping mechanism from shifting, which is obviously unreasonable. Summary of the Invention

[0005] This invention addresses the problems existing in the flipping mechanism of the aforementioned casting equipment by proposing a locking and opening / closing device for the upper mold flipping plate of an inclined casting machine. Through the linkage of mechanical locking, hydraulic drive, and sensor detection, it achieves mold opening and closing operations with high stability, high safety, and high degree of automation.

[0006] The objective of this invention is achieved through the following technical solution: a tilting casting machine upper mold flip plate locking opening and closing device, including a casting mold frame, an upper mold support member capable of flipping is provided above the casting mold frame, the upper mold of the mold is installed at the bottom of the upper mold support member, the top of the casting mold frame is also provided with a driving mechanism for driving the upper mold support member to flip and a locking mechanism for locking the upper mold support member, when the locking mechanism locks the upper mold support frame, the driving mechanism cannot drive the upper mold support member to flip.

[0007] Preferably, the top of the casting mold frame is provided with several rotating shaft support plates, and a supporting rotating shaft is provided between adjacent rotating shaft support plates. The surface of the upper mold support is provided with several connecting support members, and the connecting support members are connected to the surface of the supporting rotating shaft.

[0008] Preferably, the driving mechanism includes a driving support, a cylinder mounting plate, a first hydraulic cylinder, a first hinge block, a second hinge block, a hinge connector, and a driving block. The surface of the driving support is provided with a cylinder mounting plate, the cylinder body of the first hydraulic cylinder is mounted on the cylinder mounting plate, the piston rod end of the first hydraulic cylinder is provided with a driving block, the surface of the upper mold support is provided with a first hinge block, the end of the driving block is provided with a second hinge block, and a hinge connector is hinged between the first hinge block and the second hinge block.

[0009] Preferably, the surface of the drive support member is further provided with several guide rails, each guide rail is slidably connected to a slider, the surface of several sliders is provided with a drive support frame, and the drive block is installed inside the drive support frame.

[0010] Preferably, the hinged connector includes a columnar portion and rectangular portions installed at both ends of the columnar portion. Each rectangular portion has a rectangular inner groove inside. The first hinge block and the second hinge block are respectively hinged to the rectangular inner grooves of the rectangular portions at both ends of the columnar portion. This arrangement is to enable the hinged connector to adjust the entire pulling length by replacing columnar portions of different lengths.

[0011] Preferably, the locking mechanism includes a locking support, a second hydraulic cylinder, a locking drive plate, a support guide rod, a locking plate, a conical limiting block, and a locking block. One side of the locking support is connected to the cylinder body of the second hydraulic cylinder. The piston rod end of the second hydraulic cylinder is connected to the locking drive plate. The locking drive plate is provided with a plurality of support guide rods. The support guide rods pass through the side wall of the locking support and are connected to the locking plate. The locking plate is provided with a conical limiting block. The surface of the upper mold support is provided with a locking block. The through hole on the locking block is adapted to the conical limiting block.

[0012] Preferably, the top of the casting mold frame is also provided with a sensor support plate, on which a contact displacement sensor is provided. When the piston rod of the second hydraulic cylinder is fully extended, the contact displacement sensor can be pushed by the locking drive plate to generate a signal. This setting is to limit the logical sequence between the control of the second hydraulic cylinder and the first hydraulic cylinder.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The upper mold support is connected to the support shaft through the connecting support to compensate for the height difference, ensuring that there is no interference between the upper mold support and the frame during the flipping process, and the movement trajectory is more stable; the drive mechanism is equipped with a guide rail slider system, which allows the drive block to slide along the linear guide rail under the push of the hydraulic cylinder, which greatly enhances the stability of the transmission of driving force and avoids shaking or jamming caused by the shift of the center of gravity during the flipping process. 2. The second hydraulic cylinder of the locking mechanism, the conical limit block and the locking block actively limit the displacement of the upper mold support, replacing the limiting method that relies solely on the weight of the mold itself. This effectively prevents deviation caused by equipment vibration or external interference, and improves mold closing accuracy and safety. At the same time, the through hole fit between the conical limit block and the locking block has a self-centering function. After insertion, it can automatically correct positional deviations to ensure tight and reliable locking. 3. The locking state is detected by a contact displacement sensor and the signal is transmitted to the control system. The signal is only sent to start the first hydraulic cylinder after the locking is completely released and the conical limit block is disengaged. This ensures that the mold opening and closing actions are performed only under safe conditions, avoids damage to the mechanism caused by misoperation or forced start, and realizes safe interlock control. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a perspective view of the present utility model; Figure 3 For the present utility model in Figure 1 Enlarged view of region A in the image; Figure 4 For the present utility model Figure 2 A magnified view of region B in the image.

[0015] The diagram shows the following markings: 1. Casting mold frame; 11. Rotary shaft support plate; 12. Supporting rotating shaft; 2. Upper mold support; 21. Connecting support; 22. First hinge block; 23. Locking block; 3. Drive mechanism; 31. Drive support; 32. Cylinder mounting plate; 33. First hydraulic cylinder; 34. Drive block; 35. Second hinge block; 36. Hinge connector; 37. Guide rail; 38. Slider; 39. Drive support frame; 361. Columnar part; 362. Rectangular part; 363. Rectangular inner groove; 4. Locking mechanism; 41. Locking support; 42. Second hydraulic cylinder; 43. Locking drive plate; 44. Locking drive plate; 45. Locking plate; 46. Conical limit block; 5. Sensor support plate; 51. Contact displacement sensor. Detailed Implementation

[0016] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings: like Figure 1 and Figure 3 As shown, a tilting casting machine upper mold flip-plate locking opening and closing device includes a casting mold frame 1. The upper mold support 2, which can be flipped, is provided above the casting mold frame 1. The upper mold of the mold is not shown in the figure and is installed at the bottom of the upper mold support 2. The lower mold of the mold is not shown in the figure and is installed inside the casting mold frame 1. When the upper mold support 2 is in the unflipped state, the lower mold of the mold and the lower mold at the bottom of the upper mold support 2 are in a fitting state and constitute the entire gravity casting mold. This gravity casting mold is common knowledge to those skilled in the art and will not be described in detail here.

[0017] In this embodiment, the top of the casting mold frame 1 is provided with several rotating shaft support plates 11, and a supporting rotating shaft 12 is provided between adjacent rotating shaft support plates 11. The surface of the upper mold support member 2 is provided with several connecting support members 21, and the connecting support members 21 are connected to the surface of the supporting rotating shaft 12.

[0018] The overall shape of the upper mold support 2 tends to be plate-like. Since the height of the support shaft 12 at the top of the shaft support plate 11 relative to the ground is greater than the height of the upper mold support 2 relative to the ground, the connection between the support 21 and the support shaft 12 compensates for this height difference. Therefore, the upper mold support 2 will not interfere with the casting mold frame 1 when it is flipped relative to the casting mold frame 1. At the same time, when the upper mold support 2 is flipped relative to the casting mold frame 1, the support shaft 12 rotates simultaneously with the upper mold support 2 at the top of the shaft support plate 11, playing a supporting and guiding role.

[0019] Please continue to refer to this. Figure 2 and Figure 4The top of the casting mold frame 1 is also provided with a driving mechanism 3 for driving the upper mold support 2 to rotate; specifically, the driving mechanism 3 includes a driving support 31, a cylinder mounting plate 32, a first hydraulic cylinder 33, a second hinge block 35, a hinge connector 36, and a driving block 34. The surface of the driving support 31 is provided with a cylinder mounting plate 32. The cylinder body of the first hydraulic cylinder 33 is mounted on the cylinder mounting plate 32. The piston rod end of the first hydraulic cylinder 33 is provided with a driving block 34. The surface of the upper mold support 2 is provided with a first hinge block 22. The end of the driving block 34 is provided with a second hinge block 35. The first hinge block 22 and the second hinge block 35 are hingedly connected by a hinge connector 36.

[0020] When the upper mold support 2 needs to be flipped, the piston rod of the first hydraulic cylinder 33 changes, which can drive the position of the drive block 34 to change. The drive block 34 simultaneously drives the second hinge block 35 to move and change its position. At this time, the second hinge block 35 pulls the first hinge block 22 through the hinge connector 36. During the pulling process, both ends of the hinge connector 36 rotate relative to the first hinge block 22 and the second hinge block 35, and finally pull the upper mold support 2 to flip relative to the casting mold frame 1.

[0021] In this embodiment, the surface of the drive support 31 is also provided with a plurality of guide rails 37, and each guide rail 37 is slidably connected to a slider 38. The surface of the plurality of sliders 38 is provided with a drive support frame 39, and the drive block 34 is installed inside the drive support frame 39.

[0022] When the piston rod of the first hydraulic cylinder 33 causes the position of the drive block 34 to change, the drive support frame 39 changes position simultaneously with the drive block 34, and the slider 38 at the bottom of the drive support frame 39 slides on the guide rail 37, thereby making the drive support frame 39 and the drive block 34 have better stability during the sliding process.

[0023] In this embodiment, the hinge connector 36 includes a columnar portion 361 and rectangular portions 362 installed at both ends of the columnar portion 361. Each rectangular portion 362 has a rectangular inner groove 363 inside. The first hinge block 22 and the second hinge block 35 are respectively hinged to the inside of the rectangular inner grooves 363 of the rectangular portions 362 at both ends of the columnar portion 361.

[0024] The rectangular portions 362 at both ends of the columnar portion 361 are hinged to the ends of the first hinge block 22 or the second hinge block 35. The shape of the rectangular inner groove 363 is adapted to the protrusion of the first hinge block 22. At the same time, the two ends of the columnar portion 361 can be detachably connected to the inside of the rectangular portion 362 by means of threaded connection. Therefore, by changing the length of the columnar portion 361, the length of the entire hinge connector 36 can be adjusted, which is more convenient when facing different flipping angles or when replacing broken columnar portions 361.

[0025] Please refer to Figure 1 and Figure 3 As shown, the top of the casting mold frame 1 is also provided with a locking mechanism 4 for locking the upper mold support 2. When the locking mechanism 4 locks the upper mold support frame, the drive mechanism 3 cannot drive the upper mold support 2 to rotate.

[0026] Specifically, the locking mechanism 4 includes a locking support 41, a second hydraulic cylinder 42, a locking drive plate 43, a support guide rod 44, a locking plate 45, and a conical limiting block 46. One side of the locking support 41 is connected to the cylinder body of the second hydraulic cylinder 42. The piston rod end of the second hydraulic cylinder 42 is connected to the locking drive plate 43. The locking drive plate 43 is provided with a plurality of support guide rods 44. The support guide rods 44 pass through the side wall of the locking support 41 and are connected to the locking plate 45. The locking plate 45 is provided with a conical limiting block 46. The surface of the upper mold support 2 is provided with a locking block 23. The through hole on the locking block 23 is adapted to the conical limiting block 46.

[0027] When it is necessary to change the fit between the tapered limiting block 46 and the through hole on the locking block 23, the piston rod of the second hydraulic cylinder 42 drives the position of the locking drive plate 43 to change; when the position of the locking drive plate 43 changes, it can simultaneously drive the support guide rod 44 to slide relative to the side wall of the locking support member 41; at the same time, the support guide rod 44 can drive the position of the locking plate 45 and the locking block 23 at the end of the locking plate 45 to change; the position change of the locking block 23 can insert into or move away from the interior of the through hole on the locking block 23.

[0028] The top of the casting mold frame 1 is also provided with a sensor support plate 5, and a contact displacement sensor 51 is provided on the sensor support plate 5. When the piston rod of the second hydraulic cylinder 42 is fully extended, the contact displacement sensor 51 can be pushed by the locking drive plate 43 to generate a signal.

[0029] Locking mechanism 4 has two states: The first scenario: When the entire casting mold is not in the open state, that is, the bottom of the upper mold support 2 is attached to the top of the casting mold frame 1, the conical limit block 46 is stuck inside the locking block 23. The supporting and limiting force of the conical limit block 46 on the locking block 23 can act on the surface of the upper mold support 2, so that the upper mold support 2 will not shift. The locking drive plate 43 and the contact displacement sensor 51 are not in contact and therefore there is no signal. At this time, the first hydraulic cylinder 33 cannot and will not work, ensuring the normal operation of the casting mold. The second scenario: When the entire casting mold is in the open state, that is, when the bottom of the upper mold support 2 needs to be flipped relative to the top of the casting mold frame 1, the conical limit block 46 is first disengaged from the inside of the locking block 23. After disengagement, the piston rod of the second hydraulic cylinder 42 is fully extended, locking the drive plate 43 and thus pushing the contact displacement sensor 51 to generate a signal. The contact displacement sensor 51 transmits the signal to the external control circuit, thereby giving the first hydraulic cylinder 33 a start signal to start working.

[0030] Working principle and usage of this utility model: When the gravity casting mold is in the closed working state, the piston rod of the second hydraulic cylinder 42 is in the retracted state. The piston rod of the second hydraulic cylinder 42 pushes the locking plate 45 through the locking drive plate 43 and the support guide rod 44, so that the conical limit block 46 is firmly inserted into the through hole of the locking block 23 of the upper mold support 2.

[0031] At this point, the conical limit block 46 completely restricts any possibility of movement of the upper mold support 2 through mechanical hard limiting. Simultaneously, the locking drive plate 43 does not contact the contact displacement sensor 51, the first hydraulic cylinder 33 cannot receive the start signal, and the entire drive system is in a power-off and pressure-holding state, unable to operate. This constitutes the first safety barrier.

[0032] When the gravity casting mold needs to be opened, the control system first sends a command to the second hydraulic cylinder 42, causing its piston rod to extend fully. The piston rod pulls the locking drive plate 43 to move to the right, and the locking drive plate 43 then pushes the locking plate 45 and the conical limit block 46 out of the through hole of the locking block 23 through the support guide rod 44.

[0033] When the piston rod of the second hydraulic cylinder 42 is fully extended and the conical limit block 46 is completely disengaged, the locking drive plate 43 contacts and triggers the contact displacement sensor 51. The contact displacement sensor 51 sends a "fully unlocked" electrical signal to the control system. This is a crucial step in the linkage control; the control system only allows the first hydraulic cylinder 33 to start after receiving the signal from the displacement sensor 51. The piston rod of the first hydraulic cylinder 33 retracts, pulling the drive block 34 and the drive support frame 39 backward; the drive block 34 transmits the pulling force through the second hinge block 35, the hinge connector 36, and the first hinge block 22; finally, the upper mold support 2 smoothly flips upward, realizing mold opening.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A locking and opening / closing device for the upper mold flap of an inclined casting machine, comprising a casting mold frame (1), characterized in that, The casting mold frame (1) is provided with a flip-up upper mold support (2) above it. The upper mold of the mold is installed at the bottom of the upper mold support (2). The top of the casting mold frame (1) is also provided with a drive mechanism (3) for driving the upper mold support (2) to flip and a locking mechanism (4) for locking the upper mold support (2). When the locking mechanism (4) locks the upper mold support, the drive mechanism (3) cannot drive the upper mold support (2) to flip. The locking mechanism (4) includes a locking support (41), a second hydraulic cylinder (42), a locking drive plate (43), a support guide rod (44), and a lock. The locking support (41) is connected to the cylinder body of the second hydraulic cylinder (42) on one side. The piston rod end of the second hydraulic cylinder (42) is connected to a locking drive plate (43). The locking drive plate (43) is provided with several support guide rods (44). The support guide rods (44) pass through the side wall of the locking support (41) and are connected to the locking plate (45). The locking plate (45) is provided with a tapered limit block (46). The surface of the upper mold support (2) is provided with a locking block (23). The through hole on the locking block (23) is adapted to the tapered limit block (46).

2. The tilting casting machine upper mold flap locking and opening / closing device according to claim 1, characterized in that, The top of the casting mold frame (1) is provided with several rotating shaft support plates (11), and a supporting rotating shaft (12) is provided between adjacent rotating shaft support plates (11). The surface of the upper mold support (2) is provided with several connecting support members (21), and the connecting support members (21) are connected to the surface of the supporting rotating shaft (12).

3. The tilting casting machine upper mold flap locking and opening / closing device according to claim 2, characterized in that, The drive mechanism (3) includes a drive support (31), a cylinder mounting plate (32), a first hydraulic cylinder (33), a second hinge block (35), a hinge connector (36), and a drive block (34). The surface of the drive support (31) is provided with a cylinder mounting plate (32). The cylinder body of the first hydraulic cylinder (33) is mounted on the cylinder mounting plate (32). The piston rod end of the first hydraulic cylinder (33) is provided with a drive block (34). The surface of the upper mold support (2) is provided with a first hinge block (22). The end of the drive block (34) is provided with a second hinge block (35). The first hinge block (22) and the second hinge block (35) are hingedly connected by a hinge connector (36).

4. The tilting casting machine upper mold flap locking and opening / closing device according to claim 3, characterized in that, The surface of the drive support (31) is also provided with a number of guide rails (37), and each guide rail (37) is slidably connected to a slider (38). The surface of the sliders (38) is provided with a drive support frame (39), and the drive block (34) is installed inside the drive support frame (39).

5. The tilting casting machine upper mold flap locking opening and closing device according to claim 4, characterized in that, The hinge connector (36) includes a columnar portion (361) and rectangular portions (362) installed at both ends of the columnar portion (361). Each rectangular portion (362) has a rectangular inner groove (363) inside. The first hinge block (22) and the second hinge block (35) are respectively hinged to the inside of the rectangular inner groove (363) of the rectangular portion (362) at both ends of the columnar portion (361).

6. The tilting casting machine upper mold flap locking opening and closing device according to claim 5, characterized in that, The top of the casting mold frame (1) is also provided with a sensor support plate (5), and a contact displacement sensor (51) is provided on the sensor support plate (5). When the piston rod of the second hydraulic cylinder (42) is fully extended, the contact displacement sensor (51) can be pushed by the locking drive plate (43) to generate a signal.

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