A low pressure casting machine

Abstract

The application belongs to the technical field of casting, and provides a low-pressure casting machine, which comprises a workbench, a fixed plate arranged on the workbench, at least three supporting columns fixedly arranged at the periphery of the fixed plate in the vertical direction, a driving mechanism arranged on the workbench, a guide column and a movable mold plate arranged on the driving mechanism, the movable mold plate being connected to the bottom of the guide column and movably arranged above the fixed plate, the driving mechanism being used to drive the guide column to move in the vertical direction, so that the movable mold plate is close to or away from the fixed plate, and at least three guide mechanisms, each of which is movably arranged at the periphery of the movable mold plate. Compared with the prior art, the application has the advantages that the rolling members on the periphery of the movable mold plate are rolled against the supporting columns, so that the movable mold plate does not shake when moving, and the gap adjustment of the rolling members after wear is performed by using the adjusting members, and the buffering effect of the elastic members on the rolling members is added, so that the stability of the low-pressure casting machine is improved, and the workpiece quality is not affected.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of casting, and particularly relates to a low-pressure casting machine. BACKGROUND

[0002] The low-pressure casting machine has a top pouring type low-pressure casting machine and a side pouring type low-pressure casting machine, and the low-pressure casting process is a pouring process between pressure casting and gravity casting.

[0003] In the process of moving the dynamic mold plate driven by the driving mechanism, the existing low-pressure casting machine is only inserted with a plurality of vertical guide columns in the dynamic mold plate, so that the dynamic mold plate can reciprocate along the axis direction of the guide column during the movement of the dynamic mold plate. However, with the passage of time, a gap appears between the dynamic mold plate and the guide column, and the dynamic mold plate shakes during the movement, which easily affects the quality of the workpiece during the casting process of the casting machine, reduces the stability of the low-pressure casting machine, and reduces the qualified rate of the workpiece quality. SUMMARY

[0004] In view of the above problems in the prior art, the technical problem to be solved by the application is to provide a low-pressure casting machine with a simple overall structure, wherein the rolling elements on the periphery of the dynamic mold plate are rolled against the support columns, the gap adjustment of the rolling elements after wear is performed by the adjusting elements, and the buffering effect of the elastic elements on the rolling elements is added, so as to improve the stability of the low-pressure casting machine and ensure that the quality of the workpiece is not affected.

[0005] The technical solution adopted by the application to solve the technical problem is to provide a low-pressure casting machine, which comprises: a workbench, a fixed plate is arranged on the workbench, at least three support columns are arranged on the periphery of the fixed plate in the vertical direction;

[0006] A driving mechanism is arranged on the workbench, the driving mechanism is provided with a guide column and a dynamic mold plate, the dynamic mold plate is connected to the bottom of the guide column and movably arranged above the fixed plate, and the driving mechanism is used to drive the guide column to move in the vertical direction, so that the dynamic mold plate approaches or moves away from the fixed plate;

[0007] At least three guide mechanisms are movably arranged on the periphery of the dynamic mold plate, the guide mechanism is movably provided with a rolling element and an adjusting element, the rolling element is rolled against the support column and can rotate relative to the dynamic mold plate, the adjusting element is horizontally arranged towards the support column, and the adjusting element is used to push the rolling element to roll against the support column, so that the dynamic mold plate is in a horizontal posture and reciprocally moves in the vertical direction;

[0008] a resilient member movably sleeved on the adjusting member, one end of the resilient member being connected at the periphery of the movable die plate, the other end of the resilient member being connected with the adjusting member, the resilient member being used to apply a buffering force when the rolling member rolls along the vertical direction of the support column;

[0009] a pressing plate movably arranged on the fixed plate, the pressing plate being used to extend into the space between the movable die plate and the fixed plate to form a required product;

[0010] a heat preservation furnace and a lifting mechanism movably arranged, the lifting mechanism being connected at both sides of the heat preservation furnace to drive the heat preservation furnace to move closer to or away from the fixed plate along the vertical direction.

[0011] In the low-pressure casting machine, the rolling member comprises:

[0012] a mounting seat rotatably arranged, an extension plate being detachably connected at the periphery of the movable die plate, one end of the mounting seat being hingedly connected at the end of the extension plate close to the support column;

[0013] a connecting shaft and a roller, the connecting shaft being arranged in the mounting seat, the roller being rotatably arranged on the connecting shaft, the support column being provided with a guide rail along the vertical direction, the roller being rollingly abutted on the guide rail.

[0014] In the low-pressure casting machine, the adjusting member comprises:

[0015] an equal-height bolt arranged along the horizontal direction, one end of the equal-height bolt being movably arranged in the movable die plate, the other end of the equal-height bolt being movably abutted on the side wall of the mounting seat;

[0016] a first nut rotatably arranged at the end of the equal-height bolt away from the movable die plate, the first nut being used to push the mounting seat to rotate relative to the extension plate when the first nut moves relative to the equal-height bolt, so that the roller is rollingly abutted on the guide rail;

[0017] a second nut rotatably arranged at the position of the equal-height bolt close to the movable die plate, the second nut being connected with the end of the resilient member away from the movable die plate.

[0018] In the low-pressure casting machine, the driving mechanism comprises:

[0019] a first driving member, the workbench being provided with a mounting plate, the first driving member being fixedly arranged on the mounting plate;

[0020] a gear and a circular rack, the circular rack being arranged along the vertical direction, the top of the guide column being provided with a connecting plate, the top end of the circular rack being connected with the connecting plate, the gear being connected at the output end of the first driving member, the gear being engaged with the circular rack.

[0021] When the first driving member drives the circular rack to move in the vertical direction, the guide column is moved along its axis direction and drives the movable mold plate to move close to or away from the fixed plate.

[0022] In the low-pressure casting machine, the bottom of the fixed plate is provided with at least three fixed columns, the bottom of each fixed column is provided with an adjusting column, the top end of the adjusting column and the guide column are movably provided with an adjusting nut, and the adjusting nut is used to adjust the parallelism between the fixed plate and the movable mold plate.

[0023] In the low-pressure casting machine, the fixed plate is provided with a second driving member in a ring shape, the output end of the second driving member is connected with a connecting rod, the pressing plate is movably arranged at a position close to the middle of the fixed plate, and the pressing plate is connected with the end of the connecting rod away from the output end of the second driving member.

[0024] In the low-pressure casting machine, the support column is further provided with:

[0025] a fixed seat connected to the support column, the fixed seat is movably provided with a rotating column in the vertical direction;

[0026] an L-shaped rotating arm connected to the rotating column, the end of the rotating arm away from the fixed seat is provided with a tray, and when the rotating arm rotates relative to the fixed seat, the tray is extended into the movable mold plate and the fixed plate, so that the tray can take the formed workpiece;

[0027] a third driving member arranged at one end of the rotating arm close to the rotating column, and the output end of the third driving member is hingedly connected to the fixed seat.

[0028] In the low-pressure casting machine, the end of the rotating arm away from the fixed seat extends at least two supports along the width of the rotating arm, the two ends of each support are connected with a buffer spring, the buffer springs are arranged at the periphery of the tray, and the top of the buffer spring is connected to the bottom of the tray.

[0029] In the low-pressure casting machine, the lifting mechanism comprises:

[0030] a base;

[0031] A plurality of fourth driving members and a plurality of turbine screw elevators are uniformly distributed at the periphery of the holding furnace, a first transmission shaft is connected between two adjacent fourth driving members, a second transmission shaft is connected between the fourth driving member and the turbine screw elevator, and the turbine screw elevator is drivingly connected to the holding furnace through the second transmission shaft to drive the holding furnace to move up and down in the vertical direction.

[0032] In the low-pressure casting machine, the base is further provided with:

[0033] A slide rail and a limiting block, the bottom of the holding furnace is provided with a rotating wheel, the rotating wheel is rolled against the slide rail, and the limiting block is located at both ends of the slide rail and is used to limit the moving distance of the holding furnace on the slide rail.

[0034] A fifth driving member is arranged on the base, the output end of the fifth driving member is connected to the holding furnace, and the fifth driving member is used to drive the holding furnace to move along the length direction of the slide rail.

[0035] A traction chain, one end of the traction chain is connected to the base, and the other end of the traction chain is connected to the holding furnace.

[0036] Compared with the prior art, the low-pressure casting machine has the following beneficial effects:

[0037] (1) The low-pressure casting machine is provided with a guide mechanism at the periphery of the movable mold plate, the rolling member in the guide mechanism is rolled against the support column arranged in the vertical direction, and the original guide column also plays a guiding role when the movable mold plate moves, which greatly avoids the shaking of the movable mold plate during the vertical movement. In order to further prevent the rolling member from being worn and causing a gap between the rolling member and the support column, the adjusting member is used to rotate and adjust the rolling member relative to the movable mold plate, so that the rolling member can always be rolled against the support column, the stability of the low-pressure casting machine during operation is improved, in addition, the design of the elastic member also gives the rolling member a certain buffer force during rolling on the support column, avoids the unevenness of the support frame causing the rolling member to be stuck during rolling, and improves the smoothness of the casting machine during casting. Therefore, the overall structure of the low-pressure casting machine is relatively simple, the stability of the low-pressure casting machine is improved compared with the traditional low-pressure casting machine, and the quality of the workpiece after casting is not affected.

[0038] (2) The movable mold plate is detachably provided with an extension plate, since the mounting seat on the rolling member is hinged to the end of the extension plate, when the rolling wheel or connecting shaft is damaged, the rolling member can be replaced by detaching the extension plate and taking out the rolling member from the movable mold plate, which is convenient for workers to operate and also helps to ensure the stability of the low-pressure casting machine during operation.

[0039] (3) first adjust the height of the three fixed columns by adjusting the nuts on the fixed columns, so that the fixed plate connected with the fixed columns is in a horizontal posture, then adjust the movable mold plate by adjusting the nuts on the guide columns, so that the movable mold plate can be based on the fixed plate in a horizontal posture, finally the parallelism between the movable mold plate and the fixed plate reaches the required requirement, thereby improving the stability of the low-pressure casting machine during casting. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a perspective view of a low-pressure casting machine;

[0041] Figure 2 is Figure 1 is a partial enlarged view of A in

[0042] Figure 3 is a structural view of the first driving member and the circular rack;

[0043] Figure 4 is an installation structural view of the pressing plate, driving mechanism on the workbench;

[0044] Figure 5 is an installation structural view of the tray and rotating arm on the support column.

[0045] In the figure, 1, workbench; 10, fixed plate; 100, fixed column; 101, adjusting column; 11, support column; 110, guide rail; 12, mounting plate; 13, adjusting nut; 14, second driving member; 15, connecting rod; 16, fixed seat; 160, rotating column; 17, rotating arm; 170, support; 171, buffer spring; 18, tray; 19, third driving member;

[0046] 2, driving mechanism; 20, guide column; 200, connecting plate; 21, movable mold plate; 210, extension plate; 22, first driving member; 23, circular rack;

[0047] 3, guide mechanism; 30, rolling member; 300, mounting seat; 301, connecting shaft; 302, roller; 31, adjusting member; 310, equal-height bolt; 311, first nut; 312, second nut;

[0048] 4, elastic member;

[0049] 5, pressing plate;

[0050] 6, heat preservation furnace; 60, rotating wheel;

[0051] 7, lifting mechanism; 70, base; 700, sliding rail; 701, limiting block; 702, fifth driving member; 703, traction chain; 71, fourth driving member; 72, turbine screw lifter; 73, first transmission shaft; 74, second transmission shaft. DETAILED DESCRIPTION

[0052] The technical solutions of the present application are further described below in combination with the embodiments and the accompanying drawings, but the present application is not limited to these embodiments.

[0053] As shown in Figures 1 to 5 The low-pressure casting machine comprises a workbench 1, a fixed plate 10 arranged on the workbench 1, at least three support columns 11 fixedly arranged at the periphery of the fixed plate 10 in the vertical direction, a driving mechanism 2 arranged on the workbench 1, a guide column 20 and a movable die plate 21 arranged on the driving mechanism 2, the movable die plate 21 being connected to the bottom of the guide column 20 and movably arranged above the fixed plate 10, the driving mechanism 2 being used to drive the guide column 20 to move in the vertical direction, so that the movable die plate 21 approaches or moves away from the fixed plate 10, at least three guide mechanisms 3, each of which is movably arranged at the periphery of the movable die plate 21, a rolling piece 30 and an adjusting piece 31 movably arranged on each guide mechanism 3, the rolling piece 30 being rolled and tightly arranged on the support column 11 and being rotatable relative to the movable die plate 21, the adjusting piece 31 being horizontally arranged towards the support column 11, and the adjusting piece 31 being used to push the rolling piece 30 to be rolled and tightly arranged on the support column 11, so that the movable die plate 21 is in a horizontal posture and reciprocally moves in the vertical direction, an elastic piece 4 movably sleeved on the adjusting piece 31, one end of the elastic piece 4 being connected to the periphery of the movable die plate 21, the other end of the elastic piece 4 being connected to the adjusting piece 31, and the elastic piece 4 being used to apply a buffering force to the rolling piece 30 when the rolling piece 30 rolls in the vertical direction of the support column 11, a pressing plate 5 movably arranged on the fixed plate 10, the pressing plate 5 being used to extend into the movable die plate 21 and the fixed plate 10 to form a product required, a heat preservation furnace 6 and a lifting mechanism 7 movably arranged, and the lifting mechanism 7 being connected to both sides of the heat preservation furnace 6 to drive the heat preservation furnace 6 to approach or move away from the fixed plate 10 in the vertical direction.

[0054] Specifically, the present application is mainly based on the movement of the original movable die plate 21 along the axis direction of the guide column 20, and the guide mechanism 3 is arranged at the periphery of the movable die plate 21, as shown in Figures 1 to 2As shown, the rolling piece 30 on the guide mechanism 3 rolls against the support column 11, which improves the stability during the movement of the movable mold plate 21 and greatly avoids the shaking of the movable mold plate 21 during the vertical movement. Since the rolling piece 30 will have a gap with the support column 11 after long-term use, the movable mold plate 21 of the low-pressure casting machine is also provided with an adjusting piece 31. The adjusting piece 31 pushes the rolling piece 30 to rotate relative to the movable mold plate 21, so that the worn rolling piece 30 can roll against the support column 11 again, further improving the stability of the low-pressure casting machine during operation. In addition, the present scheme is also provided with an elastic piece 4 connected between the adjusting piece 31 and the movable mold plate 21. The design of the elastic piece 4 can give the rolling piece 30 a certain buffering force during rolling on the support column 11, that is, the elastic piece 4 can effectively avoid the phenomenon of shaking or even jamming of the rolling piece 30 during rolling due to the unevenness of the support column 11, improving the smoothness of the casting machine during casting. Therefore, the overall structure of the low-pressure casting machine is relatively simple, and the movable mold plate 21 moves more stably compared with the traditional low-pressure casting machine, ensuring that the quality of the workpiece after casting is not affected.

[0055] The rolling piece 30 comprises: a rotatingly arranged mounting seat 300, an extension plate 210 being detachably connected to the periphery of the movable mold plate 21, one end of the mounting seat 300 being hingedly connected to the end of the extension plate 210 close to the support column 11; a connecting shaft 301 and a roller 302, the connecting shaft 301 being arranged in the mounting seat 300, and the roller 302 being rotatably arranged on the connecting shaft 301. The support column 11 is provided with a guide rail 110 in the vertical direction, and the roller 302 rolls against the guide rail 110.

[0056] Specifically, as shown in the figure, Figure 2 The extension plate 210 at the periphery of the movable mold plate 21 faces the support column 11, and the top of the mounting seat 300 on the rolling piece 30 is hingedly connected to the end of the extension plate 210. Since the connecting shaft 301 is arranged on the mounting seat 300, and the roller 302 is rotatably arranged on the connecting shaft 301, the roller 302 at the periphery of the movable mold plate 21 rolls in the vertical direction on the support column 11, improving the smoothness of the movable mold plate 21 during vertical movement and avoiding the shaking of the movable mold plate 21 during movement. It should be noted that the extension plate 210 in the present scheme is detachably arranged on the movable mold plate 21, so when the roller 302 or the connecting shaft 301 is damaged after long-term use, since the rolling piece 30 is rotatably arranged on the extension plate 210, the worker can detach the extension plate 210 from the movable mold plate 21, and then replace the damaged parts of the rolling piece 30, which is convenient for the worker to operate and further improves the stability of the low-pressure casting machine during operation.

[0057] Preferably, in addition to using the roller 302 to roll on the guide rail 110, this solution can also use a rolling bearing to replace the roller 302 to achieve the above function, thereby ensuring the smoothness of the moving template 21 during vertical movement.

[0058] The adjusting component 31 includes: a leveling bolt 310 arranged horizontally, one end of which is movably disposed within the movable template 21, and the other end of which is movably abutted against the side wall of the mounting base 300; a first nut 311, which is rotatably disposed at the end of the leveling bolt 310 away from the movable template 21, and when the first nut 311 moves relative to the leveling bolt 310, it pushes the mounting base 300 to rotate relative to the extension plate 210, so that the roller 302 rolls and abuts against the guide rail 110; and a second nut 312, which is rotatably disposed at the position of the leveling bolt 310 near the movable template 21, and the second nut 312 is connected to the end of the elastic member 4 away from the movable template 21.

[0059] Furthermore, such as Figure 2 As shown, the adjusting component 31 is arranged horizontally as a whole. The right end of the equalizing bolt 310 is movably disposed within the moving template 21, and the leftmost part of the equalizing bolt 310 is movably pressed against the right side wall of the mounting base 300. When the roller 302 wears down after prolonged use, a gap will inevitably appear between the roller 302 and the support column 11. At this time, the leftmost first nut 311 on the equalizing bolt 310 rotates along... Figure 2 Move to the left, using the first nut 311 to push the mounting base 300 relative to the extension plate 210 along... Figure 2 Rotating clockwise causes the worn roller 302 to roll and press against the guide rail 110 again during the rotation, thus preventing gaps between the roller 302 and the guide rail 110 from affecting the stability of the moving template 21 during vertical movement.

[0060] It should be noted that, as Figure 2 As shown, the right end of the equal-height bolt 310 is movably disposed within the movable template 21, and when the equal-height bolt 310 is in a stationary state, the right end is always pressed against the inner wall of the movable template 21 near the support column 11. Furthermore, because one end of the elastic element 4 is connected to the movable template 21, and the other end of the elastic element 4 is connected to... Figure 2 On the right side wall of the second nut 312, therefore along the second nut 312 Figure 2When rotating to the right, the equal-height bolt 310 is in a static state, and the elastic member 4 is compressed and deformed, that is, the second nut 312 can adjust the plastic deformation capacity of the elastic member 4 by extruding the elastic member 4, so that when the guide rail 110 is uneven or the low-pressure casting machine vibrates during the rolling of the roller 302 along the length direction of the guide rail 110, the equal-height bolt 310 can be displaced by a small amplitude through the elastic member 4, thereby buffering and damping the rolling of the roller 302.

[0061] Preferably, the elastic member 4 in the present scheme can be a compression spring, a return spring or other elastic devices, and the equal-height bolt 310 in the present scheme can be replaced by a stepped shaft, which is matched with the inner threads of the first nut 311 and the second nut 312 through the outer threads on the stepped shaft, so as to achieve the same adjustment function as described above.

[0062] The driving mechanism 2 comprises a first driving member 22, a mounting plate 12 provided on the workbench 1, and the first driving member 22 fixedly provided on the mounting plate 12; a gear and a circular rack 23, the circular rack 23 being arranged in the vertical direction, the top of the guide column 20 being provided with a connecting plate 200, the top end of the circular rack 23 being connected with the connecting plate 200, and the gear being connected with the output end of the first driving member 22 and engaged with the circular rack 23; when the first driving member 22 drives the circular rack 23 to move in the vertical direction, the guide column 20 moves along its axis direction and drives the movable mold plate 21 to approach or move away from the fixed plate 10.

[0063] As shown in Figure 3 , for the driving mode of the movable mold plate 21 moving in the vertical direction, the present scheme is provided with the first driving member 22 on the mounting plate 12 of the workbench 1, the output end of the first driving member 22 being connected with a gear (not shown in the figure), and the circular rack 23 engaged with the gear being arranged in the vertical direction, and since the top end of the circular rack 23 is connected with the connecting plate 200 at the top of the guide column 20, under the driving of the first driving member 22, the circular rack 23 reciprocates in the vertical direction by the rotation of the gear, thereby making the movable mold plate 21 approach or move away from the fixed plate 10 during the movement of the guide column 20, ensuring the stability of the low-pressure casting machine during casting.

[0064] Preferably, in addition to the above-mentioned driving mode of the gear and the circular rack 23, the principle of the ball screw can also be used to realize the reciprocating movement of the movable mold plate 21 in the vertical direction, and the ball screw has the characteristics of high precision, small friction loss and high transmission efficiency, which is conducive to improving the stability of the movable mold plate 21 during movement.

[0065] The bottom of the fixed plate 10 is provided with at least three fixed columns 100, and the bottom of each fixed column 100 is provided with an adjusting column 101, and the top end of the adjusting column 101 and the guide column 20 are movably provided with an adjusting nut 13, which is used to adjust the parallelism between the fixed plate 10 and the movable die plate 21.

[0066] It should be noted that the number of fixed columns 100 corresponds to the number of the above-mentioned support columns 11, both of which are four in this scheme. In order to further improve the precision of the low-pressure casting machine during casting, the parallelism between the fixed plate 10 and the movable die plate 21 can be adjusted before casting. Specifically, the bottom of the fixed column 100 is provided with an adjusting column 101, and the adjusting column 101 and the guide column 20 are provided with external threads (not shown in the drawing). By rotating the adjusting nut 13 on the adjusting column 101, the fixed column 100 is pushed to move in the vertical direction. When the worker adjusts the adjusting nut 13 on each adjusting column 101, the fixed plate 10 is in a horizontal position by moving the fixed column 100. At this time, the worker can adjust the adjusting nut 13 on the guide column 20, thereby ensuring that the movable die plate 21 is parallel to the fixed plate 10. The adjusting method is the same as described above, and will not be described here. That is, this scheme mainly adjusts the fixed plate 10 to a horizontal position in advance, and then adjusts the movable die plate 21 based on the horizontal fixed plate 10, thereby ensuring that the parallelism between the movable die plate 21 and the fixed plate 10 meets the required requirements, thereby improving the precision of the low-pressure casting machine.

[0067] The fixed plate 10 is provided with a second driving member 14 distributed in a ring shape, and the output end of the second driving member 14 faces outward from the workbench 1 and is connected with a connecting rod 15. The pressing plate 5 is movably arranged at a position close to the middle of the fixed plate 10, and the pressing plate 5 is connected with the end of the connecting rod 15 away from the output end of the second driving member 14.

[0068] As shown in Figure 4 , the second driving member 14 is reversely installed, that is, the output end of the second driving member 14 faces outward from the workbench 1. The connecting rod 15 of the output end is connected with the pressing plate 5 located at a position close to the middle of the fixed plate 10, so that there is a certain distance between the output end of the second driving member 14 and the pressing plate 5. The purpose of this design is to prevent heat from being transferred to the second driving member 14 during the forming of the workpiece, thereby ensuring the normal use of the second driving member 14, prolonging the service life, and improving the stability of the low-pressure casting machine.

[0069] Preferably, the fixed plate 10 and the movable die plate 21 can be provided with a mold clamping groove (not marked in the figure). In this way, the workpiece to be cast can be quickly sent to the mold clamping groove by an external trolley, realizing the rapid positioning and installation of the workpiece, and thereby improving the working efficiency of the low-pressure casting machine during casting.

[0070] The support column 11 is also provided with: a fixed seat 16, which is connected to the support column 11, and a rotating column 160 is movably arranged in the fixed seat 16 along the vertical direction; an L-shaped rotating arm 17, which is connected to the rotating column 160, and a tray 18 is provided at the end of the rotating arm 17 away from the fixed seat 16. When the rotating arm 17 rotates relative to the fixed seat 16, it is used to extend the tray 18 between the moving template 21 and the fixed plate 10, so that the tray 18 can pick up the formed workpiece; and a third driving member 19, which is arranged at the end of the rotating arm 17 near the rotating column 160, and the output end of the third driving member 19 is hinged to the fixed seat 16.

[0071] After the casting is completed in this low-pressure casting machine, the workpiece often remains at the bottom of the moving mold 21. During the movement of the moving mold 21, the formed workpiece is often easily damaged due to the large drop height. This solution provides a rotating arm 17 on the support column 11 that can rotate relative to the workpiece. Figure 1 and Figure 5 As shown, since the output end of the third driving member 19 is hinged to the fixed base 16, when the third driving member 19 is driven, the rotating arm 17 rotates around the rotating column 160 along... Figure 5 Rotating clockwise causes the tray 18 to extend between the moving template 21 and the fixed plate 10, ensuring that the formed workpiece falls onto the tray 18. After the rotating arm 17 resets, the workpiece can be removed from the worktable 1. The L-shaped design of the rotating arm 17 saves space in the overall structure, meaning that the angle of rotation of the rotating arm 17 does not need to be too large to complete the workpiece retrieval, greatly improving work efficiency.

[0072] At least two supports 170 extend along both sides of the width of the end of the rotating arm 17 away from the fixed base 16. Each support 170 has a buffer spring 171 connected to both ends. The buffer springs 171 are distributed around the periphery of the tray 18, and the top of the buffer springs 171 is connected to the bottom of the tray 18.

[0073] To further prevent damage to the tray 18 when picking up workpieces, this solution also provides two supports 170 at the end of the rotating arm 17 away from the fixed seat 16. A buffer spring 171 is connected between the support 170 and the bottom of the tray 18 at the periphery. When the workpiece falls into the tray 18, the buffer spring 171 can provide a certain buffering force to the falling workpiece, preventing heavy workpieces from directly hitting the tray 18 and causing damage during the fall.

[0074] The lifting mechanism 7 includes: a base 70; several fourth drive components 71 and several turbine screw jacks 72 distributed around the periphery of the heat preservation furnace 6; a first transmission shaft 73 connecting two adjacent fourth drive components 71; a second transmission shaft 74 connecting the fourth drive component 71 and the turbine screw jack 72; and the turbine screw jack 72 being connected to the heat preservation furnace 6 via the second transmission shaft 74 to drive the heat preservation furnace 6 to move vertically up and down.

[0075] like Figure 1 As shown, during the driving process of the fourth driving component 71, the power is transmitted to the worm gear screw jack 72 through the first drive shaft 73 and the second drive shaft 74. Since the two sides of the heat preservation furnace 6 are located on both sides of the worm gear screw jack 72, the heat preservation furnace 6 can be lifted along the direction of the fixed plate 10 under the drive of the worm gear screw jack 72, so as to facilitate the replacement and maintenance of the filling material or the heat preservation furnace 6. It should be noted that the working principle of the worm gear screw jack in this solution is similar to that of the ball screw, and will not be described in detail here.

[0076] The base 70 is also provided with: a slide rail 700 and a limiting block 701; a rotating wheel 60 is provided at the bottom of the heat preservation furnace 6, the rotating wheel 60 rolls against the slide rail 700; the limiting block 701 is located at both ends of the slide rail 700 and is used to limit the distance the heat preservation furnace 6 can move on the slide rail 700; a fifth driving member 702 is provided on the base 70, the output end of the fifth driving member 702 is connected to the heat preservation furnace 6, and the fifth driving member 702 is used to drive the heat preservation furnace 6 to move along the length direction of the slide rail 700; and a traction chain 703, one end of the traction chain 703 is connected to the base 70, and the other end of the traction chain 703 is connected to the heat preservation furnace 6.

[0077] like Figure 1 As shown, the holding furnace 6 can move along the length of the slide rail 700 by means of the rotating wheel 60. In this way, after the worm gear screw jack drives the holding furnace 6 to descend, the holding furnace 6 can be moved out of the worktable 1 by the rolling of the rotating wheel 60 on the slide rail 700, so as to facilitate subsequent operations. In addition, the limit block 701 in this solution is mainly used to prevent the holding furnace 6 from accidentally slipping, effectively avoiding the safety hazards of the low-pressure casting machine and improving the safety of the production process. The driving force of the holding furnace 6 is provided by the fifth driving component 702 on the base 70. The fifth driving component 702 can also drive the holding furnace 6 to move on the slide rail 700 by means of the rotating wheel 60 through the cooperation between the motor and the ball screw. The traction chain 703 plays a guiding role in the movement of the holding furnace 6, thereby improving the smoothness and stability of the low-pressure casting machine in operation.

[0078] It should be noted that the first driving member 22 and the fourth driving member 71 described herein can be a stepper motor, a servo motor, etc.; the second driving member 14 and the third driving member 19 described herein can be selected as other driving devices such as hydraulic drive, cylinder drive, etc.

[0079] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) described herein are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0080] In addition, the descriptions such as "first", "second", "one" and the like in the present application are only for descriptive purposes, and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0081] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0082] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

Claims

1. A low pressure casting machine characterized by, The utility model provides a kind of moulding machine, including: Workbench, fixed plate is arranged on it, at least three support columns are fixed at the periphery of the fixed plate in vertical direction; Driving mechanism is arranged on the workbench, guiding column and movable die plate are equipped on the driving mechanism, the movable die plate is connected at the bottom of the guiding column and movably arranged above the fixed plate, the driving mechanism is used to drive the guiding column to move in vertical direction, so that the movable die plate is close to or away from the fixed plate; At least three guiding mechanisms, each guiding mechanism is movably arranged at the periphery of the movable die plate, rolling element and adjusting element are movably arranged on the guiding mechanism, the rolling element is rolled and abuts on the support column and can rotate relative to the movable die plate, the adjusting element is horizontally arranged towards the direction of the support column, and the adjusting element is used to push the rolling element to be rolled and abut on the support column, so that the movable die plate is in horizontal posture and reciprocatingly moves in vertical direction; The rolling element includes: a rotatingly arranged mounting seat, an extension plate is detachably connected at the periphery of the movable die plate, one end of the mounting seat is hinged at the end of the extension plate close to the support column;Connecting shaft and roller, the connecting shaft is arranged in the mounting seat, the roller is rotatably arranged on the connecting shaft, the support column is provided with a guide rail in vertical direction, and the roller is rolled and abuts on the guide rail; Elastic element movably sleeved on the adjusting element, one end of the elastic element is connected at the periphery of the movable die plate, the other end of the elastic element is connected with the adjusting element, and the elastic element is used to apply buffering force to the rolling element when rolling in vertical direction along the support column; Pressing plate movably arranged on the fixed plate, the pressing plate is used to extend into the movable die plate and the fixed plate to form the required product; The heat preservation furnace and the lifting mechanism are movably arranged, the lifting mechanism is connected on both sides of the heat preservation furnace to drive the heat preservation furnace to approach or away from the fixed plate in vertical direction.

2. A low pressure casting machine according to claim 1, characterized in that The adjusting element includes: Elevation bolt arranged in horizontal direction, one end of the elevation bolt is movably arranged in the movable die plate, the other end of the elevation bolt is movably abutted on the side wall of the mounting seat; First nut is rotatably arranged at the end of the elevation bolt away from the movable die plate, the first nut is used to push the mounting seat to rotate relative to the extension plate when moving relative to the elevation bolt, so that the roller is rolled and abutted on the guide rail; Second nut is rotatably arranged at the position of the elevation bolt close to the movable die plate, the second nut is connected with the end of the elastic element away from the movable die plate.

3. A low pressure casting machine according to claim 1, wherein The driving mechanism includes: First driving element, the mounting plate is provided on the workbench, and the first driving element is fixedly arranged on the mounting plate; Gear and circular rack, the circular rack is arranged in vertical direction, the top of the guiding column is provided with a connecting plate, the top end of the circular rack is connected with the connecting plate, the gear is connected with the output end of the first driving element, and the gear is engaged with the circular rack. When the first driving member drives the circular rack to move along the vertical direction, the guide column is driven to move along its axis direction and the movable mold plate is driven to move close to or away from the fixed plate.

4. A low pressure casting machine according to claim 3, wherein The bottom of the fixed plate is provided with at least three fixed columns, the bottom of each fixed column is provided with an adjusting column, the top end of the adjusting column and the top end of the guide column are movably provided with an adjusting nut, and the adjusting nut is used to adjust the parallelism between the fixed plate and the movable mold plate.

5. A low pressure casting machine according to claim 1, wherein The fixed plate is provided with second driving members distributed in a ring shape, the output end of the second driving member faces outward from the workbench and is connected with a connecting rod, the pressing plate is movably arranged at a position close to the middle of the fixed plate, and the pressing plate is connected with the end of the connecting rod away from the output end of the second driving member.

6. A low pressure casting machine according to claim 1, wherein The support column is further provided with: a fixed seat connected to the support column, a rotating column movably arranged in the vertical direction in the fixed seat; an L-shaped rotating arm connected to the rotating column, the end of the rotating arm away from the fixed seat is provided with a tray, and when the rotating arm rotates relative to the fixed seat, the tray is extended into the space between the movable mold plate and the fixed plate, so that the tray can take the formed workpiece; a third driving member arranged at one end of the rotating arm close to the rotating column, and the output end of the third driving member is hingedly connected to the fixed seat.

7. A low pressure casting machine according to claim 6, wherein The end of the rotating arm away from the fixed seat extends at least two supports along the width of the rotating arm, the two ends of each support are connected with a buffer spring, the buffer springs are distributed at the periphery of the tray, and the top of the buffer spring is connected to the bottom of the tray.

8. A low pressure casting machine according to claim 1, wherein The lifting mechanism comprises: a base; a plurality of fourth driving members and a plurality of turbine screw elevators distributed at the periphery of the heat preservation furnace, a first transmission shaft is connected between adjacent two fourth driving members, a second transmission shaft is connected between the fourth driving member and the turbine screw elevator, and the turbine screw elevator is drivingly connected with the heat preservation furnace through the second transmission shaft to drive the heat preservation furnace to move up and down along the vertical direction.

9. A low pressure casting machine according to claim 8, wherein The base is further provided with: a slide rail and a limiting block, the bottom of the heat preservation furnace is provided with a rotating wheel, the rotating wheel is in rolling abutment with the slide rail, the limiting block is located at the two ends of the slide rail and is used to limit the movement distance of the heat preservation furnace on the slide rail; a fifth driving member arranged on the base, the output end of the fifth driving member is connected with the heat preservation furnace, and the fifth driving member is used to drive the heat preservation furnace to move along the length direction of the slide rail; a traction chain, one end of the traction chain is connected to the base, and the other end of the traction chain is connected to the heat preservation furnace.

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