CN117102465A - Low-pressure casting machine - Google Patents

Abstract

The invention belongs to the technical field of casting, and provides a low-pressure casting machine, which comprises: the workbench is provided with a fixed plate, and at least three support columns are fixedly arranged at the periphery of the fixed plate along the vertical direction; the driving mechanism is arranged on the workbench, a guide column and a movable template are arranged on the driving mechanism, the movable template is connected to the bottom of the guide column and is movably arranged above the fixed plate, and the driving mechanism is used for driving the guide column to move along the vertical direction so that the movable template is close to or far away from the fixed plate; at least three guiding mechanisms, each guiding mechanism is movably arranged at the periphery of the movable template. Compared with the prior art, the invention has the advantages that the rolling elements on the periphery of the movable template are used for rolling and abutting against the supporting columns, so that the movable template is ensured not to shake when moving, the gap adjustment is performed after the rolling elements are worn by the adjusting elements, and the buffer effect of the elastic elements on the rolling elements is added, so that the stability of the low-pressure casting machine is improved, and the quality of workpieces is ensured not to be influenced.

Description

Low-pressure casting machine

Technical Field

The invention belongs to the technical field of casting, and particularly relates to a low-pressure casting machine.

Background

The low-pressure casting machine is of two types, namely a top-injection low-pressure casting machine and a side-injection low-pressure casting machine, and the low-pressure casting process is a pouring process between pressure casting and gravity casting.

The existing low-pressure casting machine is usually inserted into the movable mould plate only through a plurality of guide posts in the vertical direction in the moving process of the movable mould plate, so that the movable mould plate can reciprocate along the axial direction of the guide posts in the moving process of the movable mould plate, gaps are formed between the movable mould plate and the guide posts along the time, and the movable mould plate shakes in the moving process, so that the casting machine is very easy to influence the quality of workpiece forming in the casting process, the stability of the low-pressure casting machine is influenced, and the qualification rate of the quality of workpieces is reduced.

Disclosure of Invention

Aiming at the defects existing in the prior art, the technical problems to be solved by the invention are as follows: the low-pressure casting machine has the advantages that the whole structure is simple, the rolling elements on the periphery of the movable template are used for rolling and propping against the supporting columns, the movable template is ensured not to shake when moving, meanwhile, the adjusting elements are used for adjusting the gap after the rolling elements are worn, and the elastic elements are used for buffering the rolling elements, so that the stability of the low-pressure casting machine is improved, and the quality of a workpiece is ensured not to be affected.

The technical scheme adopted for solving the technical problems of the invention is that the invention provides a low-pressure casting machine, which comprises: the workbench is provided with a fixed plate, and at least three support columns are fixedly arranged at the periphery of the fixed plate along the vertical direction;

the driving mechanism is arranged on the workbench, a guide column and a movable template are arranged on the driving mechanism, the movable template is connected to the bottom of the guide column and is movably arranged above the fixed plate, and the driving mechanism is used for driving the guide column to move along the vertical direction so that the movable template is close to or far away from the fixed plate;

the guide mechanisms are movably arranged at the periphery of the movable template, rolling elements and adjusting elements are movably arranged on the guide mechanisms, the rolling elements roll and abut against the supporting columns and can rotate relative to the movable template, the adjusting elements are horizontally arranged in the direction of the supporting columns, and the adjusting elements are used for pushing the rolling elements to roll and abut against the supporting columns, so that the movable template is in a horizontal posture and moves in a reciprocating mode along the vertical direction;

the elastic piece is movably sleeved on the adjusting piece, one end of the elastic piece is connected to the periphery of the movable template, the other end of the elastic piece is connected with the adjusting piece, and the elastic piece is used for applying buffering force to the rolling piece when the rolling piece rolls along the vertical direction of the support column;

the pressing plate is movably arranged on the fixed plate and is used for extending into a space between the movable template and the fixed plate to form a required product;

the heat preservation furnace and the lifting mechanism are movably arranged, and the lifting mechanism is connected to two sides of the heat preservation furnace so as to drive the heat preservation furnace to be close to or far away from the fixed plate along the vertical direction.

In the above-described low pressure casting machine, the rolling member includes:

the installation seat is rotatably arranged, an extension plate is detachably connected to the periphery of the movable template, and one end of the installation seat is hinged to the end part, close to the support column, of the extension plate;

the connecting shaft and the idler wheels are arranged in the mounting seat, the idler wheels are rotatably arranged on the connecting shaft, the supporting columns are provided with guide rails along the vertical direction, and the idler wheels roll and abut against the guide rails.

In the above-described low pressure casting machine, the regulating member includes:

the equal-height bolt is arranged along the horizontal direction, one end of the equal-height bolt is movably arranged in the movable template, and the other end of the equal-height bolt is movably abutted against the side wall of the mounting seat;

the first nut is rotationally arranged at the end part of the equal-height bolt, which is far away from the movable template, and is used for pushing 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 rolls and abuts against the guide rail;

the second nut is rotatably arranged at the position, close to the movable template, of the equal-height bolt, and the second nut is connected with the end part, far away from the movable template, of the elastic piece.

In the above-described low pressure casting machine, the driving mechanism includes:

the first driving piece is fixedly arranged on the mounting plate;

the gear is connected to the output end of the first driving piece, and is meshed with the circular rack;

when the first driving piece drives the circular rack to move along the vertical direction, the guide column is enabled to move along the axial direction of the guide column and drives the movable template to be close to or far away from the fixed plate.

In the above-mentioned low pressure casting machine, the bottom of fixed plate is equipped with at least three fixed column, every the bottom of fixed column all is equipped with the adjusting column, the adjusting column with the top of guide post all activity is equipped with adjusting nut, adjusting nut is used for adjusting the fixed plate with parallelism between the movable mould board.

In the low-pressure casting machine, the fixing plate is provided with the second driving parts which are distributed in an annular mode, the output ends of the second driving parts face the outside of the workbench and are connected with the connecting rods, the pressing plate is movably arranged at the middle position close to the fixing plate, and the pressing plate is connected with the end portions, away from the output ends of the second driving parts, of the connecting rods.

In the above-mentioned low pressure casting machine, the support column is further provided with:

the fixed seat is connected to the support column, and a rotating column is movably arranged in the fixed seat along the vertical direction;

the rotating arm is arranged in an L shape and is connected to the rotating column, a tray is arranged at the end part of the rotating arm, which is far away from the fixed seat, and the rotating arm is used for extending the tray between the movable mould plate and the fixed plate when rotating relative to the fixed seat, so that the tray receives a formed workpiece;

the third driving piece is arranged at one end of the rotating arm, which is close to the rotating column, and the output end of the third driving piece is hinged to the fixed seat.

In the low-pressure casting machine, the end part of the rotating arm, which is far away from the fixed seat, is extended along the two sides of the width of the rotating arm, at least two brackets are connected with buffer springs at the two ends of each bracket, the buffer springs are distributed at the periphery of the tray, and the top of each buffer spring is connected with the bottom of the tray.

In the above-described low pressure casting machine, the lifting mechanism includes:

a base;

the heat preservation furnace is characterized in that a plurality of fourth driving pieces and a plurality of turbine screw lifters are distributed at the periphery of the heat preservation furnace, a first transmission shaft is connected between every two adjacent fourth driving pieces, a second transmission shaft is connected between each fourth driving piece and each turbine screw lifter, and each turbine screw lifter is in transmission connection with the heat preservation furnace through the corresponding second transmission shaft so as to drive the heat preservation furnace to conduct lifting motion along the vertical direction.

In the above-mentioned low pressure casting machine, the base is further provided with:

the heat preservation furnace comprises a sliding rail and a limiting block, wherein a rotating wheel is arranged at the bottom of the heat preservation furnace, the rotating wheel is abutted against the sliding rail in a rolling way, and the limiting block is positioned at two ends of the sliding rail and used for limiting the moving distance of the heat preservation furnace on the sliding rail;

the fifth driving piece is arranged on the base, the output end of the fifth driving piece is connected with the heat preservation furnace, and the fifth driving piece is used for driving the heat preservation furnace to move along the length direction of the sliding rail;

and 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.

Compared with the prior art, the invention has the following beneficial effects:

(1) According to the low-pressure casting machine, the guide mechanism is arranged at the periphery of the movable die plate, the rolling piece in the guide mechanism is used for rolling and abutting against the support column arranged in the vertical direction, and the original guide column plays a role in guiding the movable die plate in moving, so that shaking in the process of moving the movable die plate in the vertical direction is avoided to a great extent, gaps between the movable die plate and the support column are further prevented from being generated due to abrasion of the rolling piece, the rolling piece is rotationally adjusted relative to the movable die plate by the adjusting piece, the rolling piece can always roll and abut against the support column, stability of the low-pressure casting machine in the working process is improved, in addition, due to the design of the elastic piece, certain buffer force is given to the rolling piece in the rolling process on the support column, the phenomenon that the rolling piece is blocked in the rolling process is avoided, smoothness of the casting machine in the casting process is improved, and therefore the whole structure of the low-pressure casting machine is simpler, compared with the traditional low-pressure casting machine, the stability of the low-pressure casting machine is improved, and quality qualification rate of a cast workpiece is not affected.

(2) The extension plate can be detached from the periphery of the movable die plate, and the installation seat on the rolling element is hinged to the end part of the extension plate, so that when the roller or the connecting shaft is damaged, the rolling element can be taken out from the whole driven die plate in a mode of detaching the extension plate for replacement, and the stability of the low-pressure casting machine in the working process is not influenced when the operation of workers is facilitated.

(3) The adjusting nuts on the fixing columns are utilized to firstly adjust the heights of the three fixing columns, so that the fixing plates connected with the fixing columns are in a horizontal posture, and then the adjusting nuts on the guide columns are utilized to adjust the movable mould plate, so that the movable mould plate can take the fixing plates in the horizontal posture as the reference, and finally the parallelism between the movable mould plate and the fixing plates can reach the required requirement, and the stability of the casting process of the low-pressure casting machine is improved.

Drawings

FIG. 1 is a perspective view of a low pressure casting machine;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a structural view of the first drive member and the circular rack;

FIG. 4 is a view of the mounting structure of the platen, drive mechanism on the table;

fig. 5 is a view of the mounting structure of the tray and the rotating arm on the support column.

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

2. a driving mechanism; 20. a guide post; 200. a connecting plate; 21. a movable template; 210. an extension plate; 22. a first driving member; 23. a circular rack;

3. a guide mechanism; 30. a rolling member; 300. a mounting base; 301. a connecting shaft; 302. a roller; 31. an adjusting member; 310. a contour bolt; 311. a first nut; 312. a second nut;

4. an elastic member;

5. a pressing plate;

6. a holding furnace; 60. a rotating wheel;

7. a lifting mechanism; 70. a base; 700. a slide rail; 701. a limiting block; 702. a fifth driving member; 703. a drag chain; 71. a fourth driving member; 72. a turbine screw elevator; 73. a first drive shaft; 74. and a second transmission shaft.

Detailed Description

The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 5, the low pressure casting machine of the present invention includes: the workbench 1 is provided with a fixed plate 10, and at least three support columns 11 are fixedly arranged at the periphery of the fixed plate 10 along the vertical direction; the driving mechanism 2 is arranged on the workbench 1, the driving mechanism 2 is provided with a guide column 20 and a movable template 21, the movable template 21 is connected to the bottom of the guide column 20 and is movably arranged above the fixed plate 10, and the driving mechanism 2 is used for driving the guide column 20 to move along the vertical direction so that the movable template 21 is close to or far away from the fixed plate 10; at least three guiding mechanisms 3, each guiding mechanism 3 is movably arranged at the periphery of the movable template 21, a rolling element 30 and an adjusting element 31 are movably arranged on each guiding mechanism 3, the rolling element 30 is in rolling abutting connection with the supporting column 11 and can rotate relative to the movable template 21, the adjusting element 31 is horizontally arranged towards the direction of the supporting column 11, and the adjusting element 31 is used for pushing the rolling element 30 to be in rolling abutting connection with the supporting column 11, so that the movable template 21 is in a horizontal posture and moves reciprocally along the vertical direction; the elastic piece 4 is movably sleeved on the adjusting piece 31, one end of the elastic piece 4 is connected to the periphery of the movable template 21, the other end of the elastic piece 4 is connected with the adjusting piece 31, and the elastic piece 4 is used for applying buffering force to the rolling piece 30 when rolling along the vertical direction of the supporting column 11; the pressing plate 5 is movably arranged on the fixed plate 10, and the pressing plate 5 is used for extending into a space between the movable template 21 and the fixed plate 10 to form a required product; the heat preservation stove 6 and the elevating system 7 that all activity set up, elevating system 7 are connected in the both sides of heat preservation stove 6 to drive heat preservation stove 6 along vertical direction and be close to or keep away from fixed plate 10.

Specifically, this scheme mainly sets up guiding mechanism 3 in the periphery department of movable mould board 21 again on the basis that original movable mould board 21 moved along guiding post 20 axis direction, as shown in fig. 1 through 2, rolling element 30 roll on guiding mechanism 3 supports tightly on support column 11, the stability of movable mould board 21 motion in-process has been promoted, very big degree avoided movable mould board 21 to appear rocking along vertical direction motion in-process, because rolling element 30 can appear the clearance with support column 11 under long-term use, still be equipped with regulating part 31 on the movable mould board 21 on this low pressure casting machine, utilize regulating part 31 to promote rolling element 30 to rotate for movable mould board 21, and then make rolling element 30 after the wearing and tearing roll tightly on support column 11 once more, further promoted the stability in this low pressure casting machine working process, in addition, this scheme still is equipped with the elastic component 4 of connecting between regulating part 31 and movable mould board 21, the design of elastic component 4 can give rolling element 30 and roll certain buffer force in the in-process on support column 11, because rolling element 30 can effectively appear the clearance in long-term use, so that elastic component 4 can be effective, rolling element 30 can be in the motion in the low-pressure casting machine's motion in the process of this low-pressure casting machine 11 because of the rolling element is not smoothly influenced by the motion of this simple structure, the casting machine has even more smooth in the motion in the overall casting machine's process, the low-quality of the casting machine's quality of the motion of the rolling element, the casting machine is relatively simple in the motion of the support column 11 has been even improved, and the low-quality in the casting process, the casting machine's.

The rolling member 30 includes: the installation seat 300 is rotatably arranged, the extension plate 210 is detachably connected to the periphery of the movable template 21, and one end of the installation seat 300 is hinged to the end part of the extension plate 210, which is close to the support column 11; the connecting shaft 301 and the roller 302, the connecting shaft 301 is arranged in the mounting seat 300, the roller 302 is rotatably arranged on the connecting shaft 301, the support column 11 is provided with the guide rail 110 along the vertical direction, and the roller 302 rolls and abuts against the guide rail 110.

Specifically, as shown in fig. 2, the extension plate 210 at the periphery of the movable mold plate 21 faces the support column 11, the top of the mounting seat 300 on the rolling element 30 is hinged to the end of the extension plate 210, since the connecting shaft 301 is arranged on the mounting seat 300, the roller 302 is rotatably arranged on the connecting shaft 301, that is, the roller 302 at the periphery of the movable mold plate 21 rolls on the support column 11 along the vertical direction, so that the fluency of the movable mold plate 21 in the moving process is improved, the shaking phenomenon of the movable mold plate 21 in the moving process is avoided, and it is required to explain that the extension plate 210 in the scheme is detachably arranged on the movable mold plate 21, so that when the roller 302 or the connecting shaft 301 is damaged in long-term use, the rolling element 30 is rotatably arranged on the extension plate 210, so that a worker can detach the extension plate 210 from the movable mold plate 21, and replace damaged parts in the rolling element 30, thereby being convenient for the worker to operate, and meanwhile, the stability of the low-pressure casting machine in the working process is further improved.

Preferably, in addition to the rolling manner of the roller 302 on the guide rail 110, the rolling bearing can be used to replace the roller 302 to realize the above function, so as to ensure the smoothness of the moving die plate 21 in the vertical moving process.

The regulating member 31 includes: the equal-height bolt 310 is arranged along the horizontal direction, one end of the equal-height bolt 310 is movably arranged in the movable template 21, and the other end of the equal-height bolt 310 is movably abutted against the side wall of the mounting seat 300; the first nut 311 is rotatably arranged at the end part of the equal-height bolt 310 away from the movable template 21, and the first nut 311 is used for pushing the mounting seat 300 to rotate relative to the extension plate 210 when moving relative to the equal-height bolt 310, so that the roller 302 rolls and abuts against the guide rail 110; and a second nut 312 rotatably provided at a position where the contour bolt 310 is close to the movable die plate 21, the second nut 312 being connected to an end of the elastic member 4 remote from the movable die plate 21.

Further, as shown in fig. 2, the adjusting member 31 is integrally disposed along a horizontal direction, wherein the right end of the equal-height bolt 310 is movably disposed in the movable mold plate 21, the leftmost side of the equal-height bolt 310 is movably abutted against the right side wall of the mounting seat 300, when the roller 302 is worn out in long-term use, a gap is necessarily formed between the roller 302 and the support column 11, at this time, the leftmost first nut 311 on the equal-height bolt 310 moves leftwards in fig. 2 in a rotating manner, the first nut 311 is utilized to push the mounting seat 300 to rotate clockwise in fig. 2 relative to the extension plate 210, and then the worn roller 302 is driven to roll against the guide rail 110 again in a rotating process, so that the stability of the movable mold plate 21 in the moving process along the vertical direction is prevented from being influenced by the gap formed between the roller 302 and the guide rail 110.

It should be noted that, as shown in fig. 2, the right end of the contour bolt 310 is movably disposed in the movable mold plate 21, and when the contour bolt 310 is in a static state, the right end is always abutted against the inner side wall of the movable mold plate 21 near the supporting column 11, and because one end of the elastic member 4 is connected to the movable mold plate 21, the other end of the elastic member 4 is connected to the right side wall of the second nut 312 in fig. 2, when the second nut 312 rotates rightward in fig. 2, the contour bolt 310 is in a static state, the elastic member 4 is compressively deformed, that is, the second nut 312 can adjust the plastic deformation capability of the elastic member 4 by pressing the elastic member 4, so that when the rolling machine of the roller 302 rolls along the length direction of the guide rail 110, if the guide rail 110 is uneven or the low-pressure casting machine shakes, the contour bolt 310 can generate small displacement through the elastic member 4, thereby playing a buffering and damping effect on the rolling process of the roller 302.

Preferably, the elastic member 4 in this embodiment may be any other elastic device such as a compression spring and a return spring, and the equal-height bolt 310 in this embodiment may be replaced by a stepped shaft, and the same adjusting function is achieved by providing an external thread on the stepped shaft to cooperate with an internal thread on the first nut 311 and the second nut 312.

The driving mechanism 2 includes: the first driving piece 22 is arranged on the workbench 1, the mounting plate 12 is arranged on the workbench, and the first driving piece 22 is fixedly arranged on the mounting plate 12; the gear is connected to the output end of the first driving piece 22, and the gear is meshed with the circular rack 23; when the first driving member 22 drives the circular rack 23 to move in the vertical direction, the guide post 20 is caused to move in the axial direction thereof and drives the movable die plate 21 to approach or separate from the fixed plate 10.

As shown in fig. 3, for the driving mode of moving the movable die plate 21 along the vertical direction, in this scheme, by setting the first driving member 22 on the mounting plate 12 of the workbench 1, the output end of the first driving member 22 is connected with a gear (not shown in the figure), and the circular rack 23 meshed with the gear is set along the vertical direction, because the top end of the circular rack 23 is connected with the connecting plate 200 at the top of the guide post 20, under the driving of the first driving member 22, the circular rack 23 is driven to reciprocate along the vertical direction by the rotation of the gear, so that the movable die plate 21 is close to or far away from the fixed plate 10 in the moving process of the guide post 20, and the stability of the low-pressure casting machine in the casting process is ensured.

Preferably, besides the driving mode of the gear and the circular rack 23, the principle of a ball screw can be adopted to realize the reciprocating motion of the movable template 21 in the vertical direction, and the ball screw has the characteristics of high precision, small friction loss and high transmission efficiency, thereby being beneficial to improving the stability of the movable template 21 in the motion process.

The bottom of fixed plate 10 is equipped with at least three fixed column 100, and the bottom of every fixed column 100 all is equipped with adjusting column 101, and adjusting column 101 all activity is equipped with adjusting nut 13 with the top of guide post 20, and adjusting nut 13 is used for adjusting the depth of parallelism between fixed plate 10 and the movable mould board 21.

It should be noted that, the number of the fixing columns 100 and the number of the middle support columns 11 are all set correspondingly, four fixing columns 100 are adopted in this scheme, in order to further improve the precision of the casting of the low-pressure casting machine, the parallelism between the fixing plate 10 and the movable mold plate 21 can be adjusted before the casting, specifically, the bottom of the fixing column 100 is provided with the adjusting column 101, external threads (not shown in the drawing) are arranged on the adjusting column 101 and the guide column 20, the fixing column 100 is pushed to move along the vertical direction by using the adjusting nut 13 in the rotating process of the adjusting column 101, when a worker adjusts the adjusting nut 13 on each adjusting column 101, the fixing plate 10 is in the horizontal posture by virtue of the movement of the fixing column 100, at this moment, the worker can adjust the adjusting nut 13 on the guide column 20, and then ensure that the movable mold plate 21 is parallel to the fixing plate 10, the adjusting mode is the same as above, that is not repeated here, namely, the scheme mainly adjusts the fixing plate 10 to the horizontal posture in advance, and then adjusts the movable mold plate 21 with the fixing plate 10 as a reference, and further ensures that the parallelism between the movable mold plate 21 and the fixing plate 10 reaches the required precision of the casting machine.

The fixed plate 10 is provided with second driving pieces 14 which are distributed in a ring shape, the output end of each second driving piece 14 faces the outside of the workbench 1 and is connected with a connecting rod 15, the pressing plate 5 is movably arranged at the middle position close to the fixed plate 10, and the pressing plate 5 is connected with the end part of the connecting rod 15, which is far away from the output end of each second driving piece 14.

As shown in fig. 4, in this scheme, the second driving member 14 is reversely assembled, that is, the output end of the second driving member 14 faces the outside of the workbench 1, and the pressing plate 5 located near the middle position of the fixed plate 10 is connected by using the connecting rod 15 of the output end, so that a certain distance exists between the output end of the second driving member 14 and the pressing plate 5, and the purpose of the design is to prevent the heat of the pressing plate 5 from being transferred to the second driving member 14 in the process of forming a workpiece, so that the normal use of the second driving member 14 is ensured, the service life is prolonged, and the stability of the low-pressure casting machine is improved.

Preferably, the clamping grooves (not shown in the drawing) are formed in the fixed plate 10 and the movable die plate 21, so that a workpiece to be cast can be quickly conveyed into the clamping grooves through an external trolley, quick positioning and mounting of the workpiece are realized, and further, the working efficiency of the casting of the low-pressure casting machine is improved.

The support column 11 is also provided with: the fixed seat 16 is connected to the support column 11, and a rotating column 160 is movably arranged in the fixed seat 16 along the vertical direction; the rotating arm 17 is arranged in an L shape and is connected to the rotating column 160, a tray 18 is arranged at the end part of the rotating arm 17 away from the fixed seat 16, and the rotating arm 17 is used for extending the tray 18 between the movable template 21 and the fixed plate 10 when rotating relative to the fixed seat 16, so that the tray 18 receives a formed workpiece; the third driving member 19 is disposed at one end of the rotating arm 17 near the rotating post 160, and an output end of the third driving member 19 is hinged to the fixed seat 16.

After the casting of the low-pressure casting machine is finished, the workpiece often stays at the bottom of the movable die plate 21, and in the moving process of the movable die plate 21, the formed workpiece is often damaged due to the fact that the falling height is large, and the rotating arm 17 capable of rotating relatively is arranged on the supporting column 11 in the scheme, as shown in fig. 1 and 5, because the output end of the third driving piece 19 is hinged to the fixed seat 16, when the third driving piece 19 is driven, the rotating arm 17 rotates clockwise around the rotating column 160 along the view of fig. 5, and then the tray 18 is driven to extend into the space between the movable die plate 21 and the fixed plate 10, the formed workpiece is ensured to fall onto the tray 18, the workpiece can be separated from the workbench 1 after the rotating arm 17 is reset, the L-shaped arrangement of the rotating arm 17 saves the space occupation of the whole structure, namely, the workpiece can be taken up without excessively large rotating angle of the rotating arm 17, and the work efficiency is greatly improved.

The end of the rotating arm 17 far away from the fixed seat 16 extends along two sides of the width of the rotating arm, at least two brackets 170 are arranged, buffer springs 171 are connected to two ends of each bracket 170, the buffer springs 171 are distributed at the periphery of the tray 18, and the top of each buffer spring 171 is connected to the bottom of the tray 18.

In order to further prevent the tray 18 from being damaged when picking up workpieces, the two brackets 170 are further arranged at the end part of the rotating arm 17 far away from the fixed seat 16, and a buffer spring 171 is connected between the brackets 170 and the bottom of the periphery of the tray 18, namely, when the workpieces fall into the tray 18, the buffer spring 171 can give a certain buffer force to the falling workpieces, so that the phenomenon that the workpieces with larger mass are directly crashed into the tray 18 to be damaged in the falling process is avoided.

The lifting mechanism 7 includes: a base 70; the fourth driving pieces 71 and the turbine screw lifters 72 are distributed on the periphery of the heat preservation furnace 6, a first transmission shaft 73 is connected between two adjacent fourth driving pieces 71, a second transmission shaft 74 is connected between the fourth driving pieces 71 and the turbine screw lifters 72, and the turbine screw lifters 72 are in transmission connection with the heat preservation furnace 6 through the second transmission shafts 74 so as to drive the heat preservation furnace 6 to perform lifting motion along the vertical direction.

As shown in fig. 1, in the driving process of the fourth driving member 71, the heat preservation furnace 6 is lifted along the direction of the fixing plate 10 by the driving of the turbine screw lifter 72 because the two sides of the heat preservation furnace 6 are located at the two sides of the turbine screw lifter 72, so that the replacement and maintenance actions of the filling material or the heat preservation furnace 6 are facilitated, and it is noted that the working principle of the turbine screw lifter in the present embodiment is similar to that of the ball screw, and the detailed description is omitted.

The base 70 is also provided with: the bottom of the heat preservation furnace 6 is provided with a rotating wheel 60, the rotating wheel 60 is abutted against the slide rail 700 in a rolling way, the limiting blocks 701 are positioned at two ends of the slide rail 700, and the distance of the heat preservation furnace 6 moving on the slide rail 700 is limited; the fifth driving piece 702 is arranged on the base 70, the output end of the fifth driving piece 702 is connected with the heat preservation stove 6, and the fifth driving piece 702 is used for driving the heat preservation stove 6 to move along the length direction of the sliding rail 700; and 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 holding furnace 6.

As shown in fig. 1, the holding furnace 6 can move along the length direction of the sliding rail 700 by means of the rotating wheel 60, so that after the worm wheel screw elevator drives the holding furnace 6 to descend, the holding furnace 6 can move out of the workbench 1 by rolling of the rotating wheel 60 on the sliding rail 700 so as to facilitate subsequent operation, in addition, the limiting block 701 in the scheme is mainly used for preventing the holding furnace 6 from unexpected sliding, so that potential safety hazards of the low-pressure casting machine are effectively avoided, safety in the production process is improved, driving force of the holding furnace 6 depends on the fifth driving piece 702 on the base 70, the fifth driving piece 702 can also cooperate with a motor and a ball screw to push the holding furnace 6 to move on the sliding rail 700 by means of the rotating wheel 60, and the traction chain 703 plays a guiding role in the moving process of the holding furnace 6, so that smoothness and stability in the working process of the low-pressure casting machine are improved.

It should be noted that, the first driving member 22 and the fourth driving member 71 described herein may be a stepper motor, a servo motor, etc.; the second driving member 14 and the third driving member 19 may be hydraulic driving, pneumatic driving, or other driving devices.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to herein as "first," "second," "a," and the like are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.

Claims (10)

1. A low pressure casting machine, comprising:

the workbench is provided with a fixed plate, and at least three support columns are fixedly arranged at the periphery of the fixed plate along the vertical direction;

the driving mechanism is arranged on the workbench, a guide column and a movable template are arranged on the driving mechanism, the movable template is connected to the bottom of the guide column and is movably arranged above the fixed plate, and the driving mechanism is used for driving the guide column to move along the vertical direction so that the movable template is close to or far away from the fixed plate;

the guide mechanisms are movably arranged at the periphery of the movable template, rolling elements and adjusting elements are movably arranged on the guide mechanisms, the rolling elements roll and abut against the supporting columns and can rotate relative to the movable template, the adjusting elements are horizontally arranged in the direction of the supporting columns, and the adjusting elements are used for pushing the rolling elements to roll and abut against the supporting columns, so that the movable template is in a horizontal posture and moves in a reciprocating mode along the vertical direction;

the elastic piece is movably sleeved on the adjusting piece, one end of the elastic piece is connected to the periphery of the movable template, the other end of the elastic piece is connected with the adjusting piece, and the elastic piece is used for applying buffering force to the rolling piece when the rolling piece rolls along the vertical direction of the support column;

the pressing plate is movably arranged on the fixed plate and is used for extending into a space between the movable template and the fixed plate to form a required product;

the heat preservation furnace and the lifting mechanism are movably arranged, and the lifting mechanism is connected to two sides of the heat preservation furnace so as to drive the heat preservation furnace to be close to or far away from the fixed plate along the vertical direction.

2. A low pressure casting machine according to claim 1, characterized in that the rolling elements comprise:

the installation seat is rotatably arranged, an extension plate is detachably connected to the periphery of the movable template, and one end of the installation seat is hinged to the end part, close to the support column, of the extension plate;

the connecting shaft and the idler wheels are arranged in the mounting seat, the idler wheels are rotatably arranged on the connecting shaft, the supporting columns are provided with guide rails along the vertical direction, and the idler wheels roll and abut against the guide rails.

3. A low pressure casting machine according to claim 2, characterized in that the adjusting member comprises:

the equal-height bolt is arranged along the horizontal direction, one end of the equal-height bolt is movably arranged in the movable template, and the other end of the equal-height bolt is movably abutted against the side wall of the mounting seat;

the first nut is rotationally arranged at the end part of the equal-height bolt, which is far away from the movable template, and is used for pushing 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 rolls and abuts against the guide rail;

the second nut is rotatably arranged at the position, close to the movable template, of the equal-height bolt, and the second nut is connected with the end part, far away from the movable template, of the elastic piece.

4. A low pressure casting machine as defined in claim 1, wherein said drive mechanism comprises:

the first driving piece is fixedly arranged on the mounting plate;

the gear is connected to the output end of the first driving piece, and is meshed with the circular rack;

when the first driving piece drives the circular rack to move along the vertical direction, the guide column is enabled to move along the axial direction of the guide column and drives the movable template to be close to or far away from the fixed plate.

5. The low-pressure casting machine according to claim 4, wherein at least three fixing columns are arranged at the bottom of the fixing plate, adjusting columns are arranged at the bottom of each fixing column, adjusting nuts are movably arranged at the top ends of the adjusting columns and the guide columns, and the adjusting nuts are used for adjusting parallelism between the fixing plate and the movable die plate.

6. The low-pressure casting machine according to claim 1, wherein the fixed plate is provided with second driving pieces distributed in a ring shape, the output ends of the second driving pieces face the outside of the workbench and are connected with connecting rods, 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 part, away from the output ends of the second driving pieces, of the connecting rods.

7. The low-pressure casting machine according to claim 1, wherein the support column is further provided with:

the fixed seat is connected to the support column, and a rotating column is movably arranged in the fixed seat along the vertical direction;

the rotating arm is arranged in an L shape and is connected to the rotating column, a tray is arranged at the end part of the rotating arm, which is far away from the fixed seat, and the rotating arm is used for extending the tray between the movable mould plate and the fixed plate when rotating relative to the fixed seat, so that the tray receives a formed workpiece;

the third driving piece is arranged at one end of the rotating arm, which is close to the rotating column, and the output end of the third driving piece is hinged to the fixed seat.

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

9. A low pressure casting machine as defined in claim 1, wherein said lifting mechanism comprises:

a base;

the heat preservation furnace is characterized in that a plurality of fourth driving pieces and a plurality of turbine screw lifters are distributed at the periphery of the heat preservation furnace, a first transmission shaft is connected between every two adjacent fourth driving pieces, a second transmission shaft is connected between each fourth driving piece and each turbine screw lifter, and each turbine screw lifter is in transmission connection with the heat preservation furnace through the corresponding second transmission shaft so as to drive the heat preservation furnace to conduct lifting motion along the vertical direction.

10. The low pressure casting machine according to claim 9, wherein the base is further provided with:

the heat preservation furnace comprises a sliding rail and a limiting block, wherein a rotating wheel is arranged at the bottom of the heat preservation furnace, the rotating wheel is abutted against the sliding rail in a rolling way, and the limiting block is positioned at two ends of the sliding rail and used for limiting the moving distance of the heat preservation furnace on the sliding rail;

the fifth driving piece is arranged on the base, the output end of the fifth driving piece is connected with the heat preservation furnace, and the fifth driving piece is used for driving the heat preservation furnace to move along the length direction of the sliding rail;

and 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.