Automatic molding equipment and molding process for casting sand mold

Abstract

The invention relates to the technical field of casting sand mold equipment, in particular to casting sand mold automatic forming equipment and a forming process. According to the technical scheme, the device comprises a frame, a sliding plate is slidably connected into the frame, a shakeout box is fixedly connected to the bottom of the sliding plate, a conveying rail is arranged in the frame, a compaction assembly is installed at the bottom of the sliding plate, the device further comprises a uniform spreading mechanism, the uniform spreading mechanism comprises a telescopic shaft A, and the telescopic shaft A is arranged on the lower side of the sliding plate. Through the design of the uniform spreading mechanism, a plurality of stirring rods can be dispersed in an umbrella shape, and the plurality of stirring rods rotate in a reciprocating manner through the cooperation of a sliding block and a special-shaped rail, so that molding sand is stirred, and defects caused by a gap between the molding sand and the top surface of a template base in subsequent compaction are prevented; and through the design of a bidirectional elastic telescopic rod and an inclined plate, when the sliding plate horizontally moves, the sliding plate falls on molding sand through a pressing block, the molding sand can slightly vibrate, and then the compactness of the molding sand is improved.

Description

Technical Field

[0001] The invention relates to the technical field of casting sand mold equipment, in particular to automatic casting sand mold forming equipment and a forming process. Background Art

[0002] Sand casting is a common metal casting process. The molten metal is injected into the prepared sand mold and the desired casting is obtained after cooling and solidification. It has the advantages of low cost, wide application range and short production cycle, and is widely used in industrial production.

[0003] When making cores, current casting sand mold equipment first fits the mold and the skin, then pours the molding sand directly into the skin, and then uses hydraulic equipment to extrude the molding sand to complete the core making. In this process, due to the protrusions and depressions on the surface of the mold, the molding sand cannot be guaranteed to be completely fitted with the surface of the mold after being poured into the skin. Directly using hydraulic equipment for extrusion will cause defects on the surface of the molded molding sand and make it unusable. When the mold is separated from the molding sand, the hydraulic equipment usually drives the mold directly away from the molding sand. Since the molding sand and the mold are tightly fitted after strong extrusion, direct separation will cause the surface of the molding sand to be damaged and unusable. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides an automatic sand casting molding device and a molding process.

[0005] The technical solution of the present invention is: an automatic molding device for casting sand molds, comprising a frame, a sliding plate slidably connected in the frame, a sand box fixedly connected to the bottom of the sliding plate, a conveying track arranged in the frame, a compacting assembly installed at the bottom of the sliding plate, and also comprising an evenly spreading mechanism, the evenly spreading mechanism comprising a telescopic shaft A, the telescopic shaft A is arranged on the lower side of the sliding plate, and a plurality of evenly distributed stirring rods are arranged on the outer side of the telescopic shaft A, a paving mechanism is arranged on the lower side of the frame, the paving mechanism comprises two groups of inclined plates arranged on the lower side of the frame, a pressing block is arranged on the lower side of the sliding plate, a bidirectional elastic telescopic rod used in conjunction with the two groups of inclined plates is arranged on the upper side of the pressing block, a demoulding mechanism is arranged on the lower side of the frame, the demoulding mechanism comprises a striking hammer, two striking hammers are arranged on the lower side of the frame, and two L-shaped rods A used in conjunction with the striking hammer are arranged, a deformation block A is arranged on the lower side of the frame, and a plurality of evenly distributed deformation blocks B are arranged, and the deformation block A is slidably connected with the plurality of deformation blocks B.

[0006] In one of the embodiments, the spreading mechanism also includes a hydraulic cylinder A, which is installed in the sand box through a connecting plate, and the telescopic end of the hydraulic cylinder A is rotatably sleeved with a circular plate A, the top of the telescopic shaft A is fixedly connected to the telescopic end of the hydraulic cylinder A, and an annular groove is provided at the bottom of the circular plate A, and the tops of several stirring rods are hinged with sliding seats, which are stuck in the annular groove and slide in the annular groove, and the telescopic end of the telescopic shaft A is fixedly connected with a circular plate B, and several evenly distributed connecting rods are hinged on the circular plate B, and the tops of several connecting rods are respectively hinged to several stirring rods.

[0007] In one embodiment, the balancing mechanism further includes a slider, the inner wall of the telescopic shaft A is provided with a special-shaped track, and the telescopic end of the telescopic shaft A is fixedly connected with the slider used in conjunction with the special-shaped track.

[0008] In one embodiment, the paving mechanism also includes an extension rod, the extension rod is fixedly connected to the bottom of the sliding plate, the bidirectional elastic telescopic rod is through-type fixedly connected to the telescopic end of the extension rod, the pressure block is fixedly connected to the telescopic end of the extension rod, a scraper is fixedly connected to one side of the sand falling box, a special-shaped frame is symmetrically fixedly connected in the frame, the inclined plate is fixedly connected to the special-shaped frame, a guide plate is fixedly connected in the special-shaped frame, a guide block is fixedly connected to the guide plate, a cross plate is fixedly connected to the special-shaped frame, the cross plate is fixedly connected to the guide plate and the guide block, the telescopic end of the bidirectional elastic telescopic rod is rotatably connected to a roller, and the roller is used in conjunction with the guide block.

[0009] In one embodiment, the demoulding mechanism also includes a supporting base, a mounting frame is fixedly connected to the supporting base, a hydraulic cylinder B is installed in the mounting frame, the telescopic end of the hydraulic cylinder B is fixedly connected to a guide frame, a locking bar is symmetrically slidably connected to the top of the mounting frame, a T-shaped shaft is fixedly connected to one side of the locking bar, and guide grooves for use with the T-shaped shaft are symmetrically opened in the guide frame.

[0010] In one embodiment, the demoulding mechanism also includes a push rod, which is slidably connected in the mounting frame, and a rectangular groove is symmetrically provided at the bottom of the outer wall of the push rod, in which an elastic wedge block is slidably connected, and a locking groove is provided on the other side of the locking strip for use with the elastic wedge block, and the bottom of the push rod is against the telescopic end of the hydraulic cylinder B.

[0011] In one embodiment, the demoulding mechanism also includes an L-shaped rod B, which is symmetrically fixed to the guide frame, and a plurality of pressure plates are hinged on one side of the L-shaped rod B. A first elastic member is arranged between each of the pressure plates and the L-shaped rod B. A crank is fixed to one side of the striking hammer via a connecting shaft, and a convex shaft used in conjunction with the plurality of pressure plates is fixed to one side of the crank.

[0012] In one of the embodiments, it also includes a template base, the top end of the top rod is fixedly connected to the template base, the deformation block A and several deformation blocks B are slidably connected to the template base, the knocking hammer is hinged to the bottom of the template base through a vertical plate, the L-shaped rod A is fixedly connected to the bottom of the template base, the left and right sides of the bottom of the template base are symmetrically fixed with L-shaped plates, the outer wall of the template base is slidably sleeved with an outer frame, the L-shaped plate is fixed with a vertical axis, the vertical axis is slidably connected to the outer frame, and a second elastic member is arranged between the L-shaped plate and the outer frame.

[0013] In one of the embodiments, a rectangular frame is further included, and the bottom of the template base is symmetrically and slidingly connected to the rectangular frame. A driving assembly is installed at the bottom of the template base, and the driving assembly is connected to the rectangular frame. Two lifting frames A are fixedly connected to the rectangular frame, and a lifting frame B is fixedly connected to the rectangular frame. The bottom of the deformation block A and several deformation blocks B are fixedly connected to one end of a lifting shaft, and the other end of the lifting shaft slides through the template base and is used in conjunction with the lifting frame A and the lifting frame B respectively.

[0014] In one embodiment, a molding process of a casting sand mold automatic molding device includes the following steps: S1: Start the hydraulic cylinder B. The telescopic end of the hydraulic cylinder B extends to drive the push rod and the guide frame to lift upward, thereby causing the lock bar to slide and the elastic wedge block to fit into the lock groove, thereby limiting the push rod, so that the push rod drives the template base to maintain a stable height, and the sand drop box is started to release the molding sand; S2: the telescopic end of the hydraulic cylinder A extends, so that the plurality of stirring rods stir the molding sand, and the telescopic end of the hydraulic cylinder A contracts, so that the plurality of stirring rods are reset, and the sliding plate slides horizontally, so that the scraper scrapes the molding sand flat, and the pressing blocks are continuously dropped on the molding sand, so that the density of the molding sand is increased; S3: The telescopic end of the hydraulic cylinder B contracts, and the plurality of pressing plates come into contact with the convex shaft, so that the hammer continuously falls on the L-shaped rod A, thereby causing the template base to vibrate slightly, thereby loosening the molding sand and the template base; S4: changing the positions of the deformation block A and a plurality of the deformation blocks B through the driving assembly, so that the shape of the casting finally produced is changed.

[0015] The beneficial effects of the present invention are: 1. The present invention, through the design of the spreading mechanism, can make several stirring rods spread out in an umbrella shape when the telescopic end of the telescopic shaft A contracts, and through the cooperation of the slider and the special-shaped track, the several stirring rods can be rotated back and forth, so as to stir the molding sand, and prevent the gap between the molding sand and the top surface of the template base, which will cause defects in subsequent compaction. Through the design of the bidirectional elastic telescopic rod and the inclined plate, when the sliding plate moves horizontally, the pressing block can be reciprocated up and down, and the pressing block can be smashed onto the molding sand, which can cause a slight vibration of the molding sand, thereby increasing the density of the molding sand.

[0016] 2. Through the design of the guide frame and the T-shaped shaft, the present invention can make the locking bar slide horizontally when the telescopic end of the hydraulic cylinder B is extended, so that when the push rod drives the elastic wedge block to rise to the lock groove, the elastic wedge block is stuck in the lock groove, thereby limiting the template base. When the telescopic end of the hydraulic cylinder B is retracted, the template base can maintain a stable height.

[0017] 3. Through the design of the demoulding mechanism of the present invention, when the telescopic end of the hydraulic cylinder B contracts, several pressure plates can be brought into contact with the cam on the crank. The cam is subjected to force to drive the striking hammer to rotate through the crank. When the striking hammer rotates downward, the striking hammer falls on the L-shaped rod A, which can cause a slight vibration to the template base, loosening the template base and the molding sand, thereby preventing the template base from falling directly and damaging the molding sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A structural schematic diagram of the apportionment mechanism of the present invention; Figure 3 It is a structural schematic diagram of the circular plate A of the present invention; Figure 4 It is a structural schematic diagram of the slider of the present invention; Figure 5 It is a schematic diagram of the tiling mechanism of the present invention; Figure 6 It is a schematic diagram of the installation of the guide block of the present invention; Figure 7 It is a structural schematic diagram of the demoulding mechanism of the present invention; Figure 8 It is a schematic diagram of the installation of the elastic wedge block of the present invention; Fig. 9 It is a schematic diagram of the installation of the crank of the present invention; Fig.10 It is a schematic diagram of the installation of the rectangular frame of the present invention; Fig.11 This is a schematic diagram of the installation of the deformation block B of the present invention; Fig.12It is a structural schematic diagram of different moving states of the deformation block A and the deformation block B of the present invention.

[0019] The markings in the figure are: 1-frame, 101-sliding plate, 102-sand box, 103-conveying track, 201-telescopic shaft A, 202-stirring rod, 203-inclined plate, 204-pressing block, 2041-bidirectional elastic telescopic rod, 205-beating hammer, 206-L-shaped rod A, 301-hydraulic cylinder A, 302-circular plate A, 303-circular plate B, 304-connecting rod, 401-special-shaped track, 402-sliding block, 501-extension rod, 502-scraper, 5021-special-shaped frame, 503-guide plate, 504-guide block, 50 5- horizontal plate, 601- supporting base, 602- mounting frame, 603- hydraulic cylinder B, 604- guide frame, 605- locking bar, 606- T-shaped shaft, 701- push rod, 702- elastic wedge block, 801- L-shaped rod B, 802- pressure plate, 803- crank, 901- template base, 902- outer frame, 1001- rectangular frame, 1002- driving assembly, 1003- deformation block A, 1004- deformation block B, 10041- lifting frame A, 10042- lifting frame B, 1005- lifting shaft, 100- skin. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings. Example 1

[0021] A kind of automatic molding equipment for casting sand mold, such as Figure 1-Figure 4As shown, it includes a frame 1, a sliding plate 101 is slidably connected in the frame 1, a sand box 102 is fixedly connected to the bottom of the sliding plate 101, a conveying track 103 is arranged in the frame 1, a compaction assembly is installed at the bottom of the sliding plate 101, the compaction assembly is composed of a hydraulic rod and a compaction plate, wherein the hydraulic rod is installed at the bottom of the sliding plate 101, the compaction plate is fixedly connected to the telescopic end of the hydraulic rod, and also includes a spreading mechanism, the spreading mechanism includes a telescopic shaft A201, the telescopic shaft A201 is arranged on the lower side of the sliding plate 101, six evenly distributed stirring rods 202 are arranged on the outer side of the telescopic shaft A201, and the six stirring rods 202 are used to stir the molding sand, and a paving mechanism is arranged on the lower side of the frame 1, and the paving mechanism It includes two groups of inclined plates 203 arranged on the lower side of the frame 1, each group has six, a pressure block 204 is arranged on the lower side of the sliding plate 101, and a bidirectional elastic telescopic rod 2041 used in conjunction with the two groups of inclined plates 203 is arranged on the upper side of the pressure block 204. A demoulding mechanism is arranged on the lower side of the frame 1, and the demoulding mechanism includes a striking hammer 205. Two striking hammers 205 are arranged on the lower side of the frame 1, and two L-shaped rods A206 used in conjunction with the striking hammer 205 are arranged. The demoulding mechanism can prevent the molding sand from being damaged. A deformation block A1003 is arranged on the lower side of the frame 1, and four evenly distributed deformation blocks B1004 are arranged. The deformation block A1003 is slidably connected with the four deformation blocks B1004.

[0022] like Figure 3 As shown, the spreading mechanism also includes a hydraulic cylinder A301, which is installed in the sand box 102 through a connecting plate, and a circular plate A302 is rotatably sleeved on the telescopic end of the hydraulic cylinder A301, and the top of the telescopic shaft A201 is fixedly connected to the telescopic end of the hydraulic cylinder A301, and an annular groove is provided at the bottom of the circular plate A302. The tops of the six stirring rods 202 are hinged with sliding seats, which are stuck in the annular groove and slide in the annular groove, and the telescopic end of the telescopic shaft A201 is fixedly connected with a circular plate B303, and six evenly distributed connecting rods 304 are hinged on the circular plate B303, and the six stirring rods 202 are arranged one by one with the six connecting rods 304, and the tops of the six connecting rods 304 are respectively hinged to the six stirring rods 202, and the stirring rods 202 are made of elastic material at the parts below the connection with the connecting rods 304.

[0023] like Figure 4 As shown, the spreading mechanism also includes a slider 402, the inner wall of the telescopic shaft A201 is provided with a special-shaped track 401, the telescopic end of the telescopic shaft A201 is fixedly connected with a slider 402 used in conjunction with the special-shaped track 401, and when the slider 402 slides along the special-shaped track 401, the six stirring rods 202 can reciprocate.

[0024] like Figure 5-Figure 6As shown, the paving mechanism also includes an extension rod 501, the bottom of the sliding plate 101 is fixedly connected to the extension rod 501, the bidirectional elastic telescopic rod 2041 is fixedly connected to the telescopic end of the extension rod 501, the pressing block 204 is fixedly connected to the telescopic end of the extension rod 501, the left side of the sand box 102 is fixedly connected to a scraper 502, the scraper 502 is used to scrape the molding sand, and the frame 1 is symmetrically fixedly connected with special-shaped frames 5021, and the two special-shaped frames 5021 are respectively located in the sand box On the front and rear sides of 102, the inclined plate 203 is fixedly connected to the special-shaped frame 5021, a guide plate 503 is fixedly connected inside the special-shaped frame 5021, the guide plate 503 is inclined, a guide block 504 is fixedly connected to the guide plate 503, a cross plate 505 is fixedly connected to the special-shaped frame 5021, the cross plate 505 is fixedly connected to the guide plate 503 and the guide block 504, the telescopic end of the bidirectional elastic telescopic rod 2041 is rotatably connected to a roller, and the roller is used in conjunction with the guide block 504.

[0025] like Figure 1 and Figure 7-Figure 8 As shown, the demoulding mechanism also includes a support base 601, a mounting frame 602 is fixedly connected to the support base 601, a hydraulic cylinder B603 is installed in the mounting frame 602, a guide frame 604 is fixedly connected to the telescopic end of the hydraulic cylinder B603, a locking bar 605 is symmetrically slidably connected to the top of the mounting frame 602, a T-shaped shaft 606 is fixedly connected to one side of the locking bar 605, and guide grooves used in conjunction with the T-shaped shaft 606 are symmetrically opened in the guide frame 604. When the guide frame 604 is lifted upward, the locking bar 605 can move horizontally.

[0026] like Figure 7-Figure 9 As shown, the demoulding mechanism also includes a push rod 701, and the push rod 701 is slidably connected to the upper inner part of the mounting frame 602. A rectangular groove is symmetrically provided at the bottom of the outer wall of the push rod 701, and an elastic wedge block 702 is slidably connected in the rectangular groove. A locking groove for use with the elastic wedge block 702 is provided on the other side of the locking strip 605. The elastic wedge block 702 is inserted into the locking groove to limit the push rod 701, and the bottom of the push rod 701 is against the telescopic end of the hydraulic cylinder B603.

[0027] like Figure 7 and Fig. 9 As shown, the demoulding mechanism also includes an L-shaped rod B801, which is symmetrically fixed on the guide frame 604, and three pressure plates 802 are hinged on one side of the L-shaped rod B801. A first elastic member is arranged between the three pressure plates 802 and the L-shaped rod B801, and the first elastic member is a torsion spring. A crank 803 is fixed on one side of the striking hammer 205 through a connecting shaft, and a convex shaft used in conjunction with the three pressure plates 802 is fixed on one side of the crank 803.

[0028] like Figure 7 and Figure 10-11As shown, it also includes a template base 901, the top end of the top rod 701 is fixedly connected to the template base 901, the deformation block A1003 and the four deformation blocks B1004 are all slidably connected to the template base 901, the knocking hammer 205 is hinged to the bottom of the template base 901 through a vertical plate, the L-shaped rod A206 is fixedly connected to the bottom of the template base 901, and the left and right sides of the bottom of the template base 901 are symmetrically fixed with L-shaped plates, and there are four L-shaped plates in total. The outer wall of the template base 901 is slidably sleeved with an outer frame 902, and a vertical axis is fixedly connected to the L-shaped plate, and the vertical axis is slidably connected to the outer frame 902, and a second elastic member is arranged between the L-shaped plate and the outer frame 902, and the second elastic member is a compression spring.

[0029] Initially, the falling sand box 102 is located directly above the skin 100, the telescopic end of the hydraulic cylinder A301 is in a retracted state, the bottom end of the circular plate B303 is higher than the top surface of the skin 100, and the elastic wedge block 702 is in a released state. The hydraulic cylinder B603 is started first, and the telescopic end of the hydraulic cylinder B603 extends to drive the push rod 701 and the guide frame 604 to lift upward, and the push rod 701 drives the template base 901 to lift upward, and the template base 901 drives the vertical axis to lift upward through the L-shaped plate, and the L-shaped plate drives the outer frame 902 to lift upward through the second elastic member. At this time, the template base 901 and the outer frame 902 are lifted upward synchronously, and the template base 901 drives the L-shaped rod A206 to lift upward, and drives the hammer 205 to lift upward through the vertical plate, and the guide frame 60 4 drives the two L-shaped rods B801 to lift upward, and the L-shaped rods B801 drive the three pressure plates 802 thereon to lift synchronously with the hammer 205. After the outer frame 902 is lifted, its top surface contacts the bottom surface of the skin 100. Since the skin 100 is heavier, the skin 100 applies downward pressure to the outer frame 902. The gravity of the outer frame 902 and the skin 100 is greater than the elastic force of the second elastic member. The outer frame 902 squeezes the second elastic member, and the second elastic member contracts under the force, causing the outer frame 902 to drop relative to the template base 901. The template base 901 continues to rise and enters the skin 100. At this time, the outer wall of the template base 901 fits with the inner wall of the skin 100. During the upward lifting of the guide frame 604, the T-shaped shaft 606 is squeezed through the guide groove therein. The shaft 606 slides along the inclined surface of the guide groove and drives the lock bar 605 to slide horizontally, so that the two lock bars 605 fit the outer wall of the push rod 701, and then the T-shaped shaft 606 slides to the vertical surface of the guide groove, and no longer drives the lock bar 605 to move. The push rod 701 is lifted upward and drives the two elastic wedge blocks 702 to lift upward. After sliding, the lock bar 605 contacts and squeezes the corresponding elastic wedge block 702. The elastic wedge block 702 is forced to shrink. When the elastic wedge block 702 moves to the lock groove of the corresponding lock bar 605, the elastic wedge block 702 is released and stuck in the lock groove, thereby limiting the push rod 701. The push rod 701 drives the template base 901 to maintain a stable height, and then the hydraulic cylinder B603 is closed, and the sand falling box 102 is started. 102 puts the molding sand into the skin 100 (the sand dropping box 102 is a prior art for putting the molding sand, which will not be described in detail here). Since the top surface of the template base 901 is uneven, the molding sand falls on the top surface of the template base 901 after being put into the skin 100. It is necessary to stir the molding sand so that the molding sand can be evenly distributed on the top surface of the template base 901. After the molding sand is put, the hydraulic cylinder A301 is started, and the telescopic end of the hydraulic cylinder A301 drives the circular plate A302 and the telescopic shaft A201 to descend. The circular plate A302 drives the six stirring rods 202 to descend, and the telescopic end of the telescopic shaft A201 drives the circular plate B303 to descend. The circular plate B303 drives the six connecting rods 304 to descend. After the circular plate B303 descends, it contacts and squeezes the molding sand on the top surface of the template base 901.When the molding sand is squeezed to the point where it cannot be compressed any more, the molding sand provides support for the circular plate B303, so that the circular plate B303 cannot continue to fall. At this time, the telescopic end of the hydraulic cylinder A301 continues to drive the circular plate A302 and the telescopic shaft A201 to fall, and the distance between the circular plate A302 and the circular plate B303 is shortened. The circular plate B303 drives the telescopic end of the telescopic shaft A201 to contract, and the connecting rod 304 drives the corresponding stirring rod 202 to rotate upward with the connection point of the slide seat as the center of the circle. The six stirring rods 202 spread out like an umbrella, and at the same time, the telescopic end of the telescopic shaft A201 The slider 402 is driven to slide along the special-shaped track 401. When the slider 402 slides to the corner of the special-shaped track 401, the slider 402 drives the telescopic end of the telescopic shaft A201 to reciprocate along the special-shaped track 401. The telescopic end of the telescopic shaft A201 drives the circular plate B303 to rotate. The circular plate B303 drives the six stirring rods 202 to rotate through the six connecting rods 304. The six stirring rods 202 respectively drive the corresponding slide seats to slide along the annular groove. When the six stirring rods 202 rotate, the molding sand is stirred so that the molding sand can be evenly distributed. When the bottom end of the stirring rod 202 hits the protrusion or depression of the template base 901, the stirring rod 202 can produce elastic deformation at the part below the connection with the connecting rod 304, so that the stirring rod 202 can move smoothly and prevent the stirring rod 202 from damaging the template base 901. Then the telescopic end of the hydraulic cylinder A301 contracts to drive the circular plate A302 to lift and reset. At this time, the telescopic end of the telescopic shaft A201 will not move due to the weight of itself and the circular plate B303. After the circular plate A302 is lifted, it will be in contact with the circular plate B303. As the distance between the two ends increases, the slider 402 slides along the special-shaped track 401 and drives the telescopic end of the telescopic shaft A201 to reciprocate again, thereby causing the six stirring rods 202 to rotate again to stir the molding sand. When the slider 402 slides to the bottom end of the special-shaped track 401, the stirring rods 202 rotate and reset, and the telescopic end of the telescopic shaft A201 drives the six connecting rods 304 to lift and reset upward through the circular plate B303, thereby completing the stirring of the molding sand, thereby preventing the gap between the molding sand and the top surface of the template base 901, which causes defects during subsequent compaction.

[0030] Initially, the telescopic end of the extension rod 501 is in a retracted state, and the bottom surface of the pressing block 204 is higher than the top surface of the skin 100. After the stirring of the molding sand is completed, the sliding plate 101 is started, and the sliding plate 101 drives the sand falling box 102, the extension rod 501 and the compacting assembly to move horizontally to the right (the sliding plate 101 can be driven by a motor and a chain or other mechanism, which is the prior art and is not shown in the figure, and will not be repeated here). The sand falling box 102 drives the scraper 502 to scrape and smooth the molding sand above the skin 100, and at the same time, the telescopic end of the extension rod 501 drives the pressing block 204 and the bidirectional elastic telescopic rod 2041 to move to the right, and the telescopic end of the bidirectional elastic telescopic rod 2041 slides obliquely downward along the inclined surface of the special-shaped frame 5021, and The telescopic end of the extension rod 501 drives the pressing block 204 to descend obliquely downward. When the telescopic end of the bidirectional elastic telescopic rod 2041 slides to the horizontal plane of the special-shaped frame 5021, the pressing block 204 is pressed into the skin 100 to perform a preliminary extrusion of the molding sand. Then the telescopic end of the bidirectional elastic telescopic rod 2041 slides until it contacts the inclined plate 203 on the left, and slides obliquely upward along the inclined plate 203. The bidirectional elastic telescopic rod 2041 drives the pressing block 204 to rise obliquely upward through the telescopic end of the extension rod 501 until the telescopic end of the bidirectional elastic telescopic rod 2041 passes over the inclined plate 203 on the left, and the telescopic end of the bidirectional elastic telescopic rod 2041 loses support, allowing the telescopic end of the extension rod 501 to move, and the pressing block 204 is supported by itself. The gravity of the body drives the telescopic end of the extension rod 501 to fall quickly and hit the molding sand. When the pressure block 204 hits the molding sand, it can cause a slight vibration in the molding sand, thereby increasing the density of the molding sand. Then the sliding plate 101 continues to slide to the right, and repeats the above steps to achieve preliminary compaction of the molding sand. When the telescopic end of the bidirectional elastic telescopic rod 2041 passes over the inclined plate 203 on the right and continues to slide, the outer wall of the telescopic end of the bidirectional elastic telescopic rod 2041 contacts the inclined surface of the guide plate 503 and slides along the inclined surface of the guide plate 503, and the telescopic end of the bidirectional elastic telescopic rod 2041 drives the roller thereon to contact the inclined surface of the adjacent guide block 504, and the inclined surface of the guide block 504 squeezes the roller, thereby causing the bidirectional elastic telescopic rod 2041 to move upward. The telescopic end of the bidirectional elastic telescopic rod 2041 contracts, and then the telescopic end of the bidirectional elastic telescopic rod 2041 slides to the upper side of the cross plate 505. At this time, the roller is no longer in contact with the guide block 504, so that the telescopic end of the bidirectional elastic telescopic rod 2041 can move, and the telescopic end of the bidirectional elastic telescopic rod 2041 is released and reset, and contacts with the top surface of the cross plate 505. The cross plate 505 provides support for the telescopic end of the bidirectional elastic telescopic rod 2041, so that the pressure block 204 maintains a stable height, and then the hydraulic rod in the compacting assembly is started, and the telescopic end of the hydraulic rod drives the compacting plate to descend into the skin 100 to squeeze the molding sand, making the molding sand more compact, and then the telescopic end of the hydraulic rod drives the compacting plate to lift and reset, thereby completing the compaction of the molding sand.

[0031] After completing the compaction of the molding sand, it is necessary to separate the template base 901 from the molding sand. At this time, the telescopic end of the hydraulic cylinder B603 contracts to drive the guide frame 604 to descend, and the guide frame 604 drives the two L-shaped rods B801 to descend. Since the elastic wedge block 702 is stuck in the lock groove of the lock bar 605 at this time, the elastic wedge block 702 drives the template base 901 to maintain a stable height through the push rod 701. After the telescopic end of the hydraulic cylinder B603 contracts, it is disengaged from the push rod 701. At this time, the L-shaped rod B801 drives the three pressure plates 802 thereon to descend. During this process, the lower pressure plate 802 contacts and squeezes the cam on the crank 803. At this time, the top surface of the pressure plate 802 is blocked by the L-shaped rod B801 and cannot rotate. The cam is subjected to force through the crank 803. The corresponding striking hammer 205 is driven to rotate upward, and the lower pressure plate 802 continues to fall and no longer contacts the convex shaft, so that the striking hammer 205 can move. The striking hammer 205 is affected by its own gravity and rotates downward with the connection point of the vertical plate as the center of the circle, and falls on the L-shaped rod A206. The L-shaped rod A206 is impacted and drives the template base 901 to vibrate slightly. Then the two upper pressure plates 802 continue to fall, and the above steps are repeated. By causing the template base 901 to vibrate slightly, the molding sand and the template base 901 can be loosened without causing damage to the molding sand. After the guide frame 604 continues to fall, the inclined surface of the inner guide groove contacts the T-shaped shaft 606. The T-shaped shaft 606 slides along the inclined surface of the guide groove and drives the locking bar 605. The locking bar 605 slides to the side away from the push rod 701, and the locking groove inside it disengages from the elastic wedge block 702 after sliding. After the elastic wedge block 702 is freed from the restriction, the push rod 701 can move. At this time, the push rod 701 falls under the influence of its own weight and the template base 901, so that the template base 901 is away from the molding sand. After the push rod 701 falls, it is reset against the telescopic end of the hydraulic cylinder B603. In this process, the template base 901 drives the L-shaped rod A206 to fall, and drives the striking hammer 205 and the crank 803 to fall through the vertical plate. When the crank 803 falls, it drives the convex shaft thereon to contact and squeeze the upper pressure plate 802. The pressure plate 802 is forced to rotate downward with the connection point of the L-shaped rod B801 as the center of the circle. The first elastic member is forced to shrink, and the convex shaft continues to After falling over the upper pressure plate 802, after the upper pressure plate 802 is freed from the restriction, the first elastic member is released to drive the upper pressure plate 802 to rotate and reset, then the convex shaft contacts the two lower pressure plates 802, and the above steps are repeated. At this time, the template base 901 falls downward in the outer frame 902, the second elastic member is released, and the outer frame 902 maintains a stable height until the second elastic member is completely released, the second elastic member drives the outer frame 902 to fall and reset, then the sliding plate 101 slides and drives the sand box 102, the extension rod 501 and the compaction assembly to reset, the extension rod 501 drives the bidirectional elastic telescopic rod 2041 to slide, and the telescopic end of the bidirectional elastic telescopic rod 2041 slides along the surface of the cross plate 505, thereby keeping the pressing block 204 at a stable height.Until the telescopic end of the bidirectional elastic telescopic rod 2041 passes over the left end of the horizontal plate 505, the telescopic end of the bidirectional elastic telescopic rod 2041 loses support so that the telescopic end of the extension rod 501 can move, and the telescopic end of the extension rod 501 drives the bidirectional elastic telescopic rod 2041 and the pressing block 204 to fall, until the telescopic end of the bidirectional elastic telescopic rod 2041 contacts the inclined surface of the special-shaped frame 5021, and then the conveying track 103 drives the skin 100 to move, and the skin 100 drives the formed molding sand to move, and drives the next skin 100 to the bottom of the sand box 102, and repeats the above steps to work, thereby completing the molding of the molding sand. The above steps can effectively prevent defects after the molding sand is compacted, and prevent the molding sand from being damaged when the template base 901 is separated from the molding sand. Example 2

[0032] like Figure 10-11 As shown, a rectangular frame 1001 is also included, and the rectangular frame 1001 is symmetrically and slidably connected to the bottom of the template base 901. Two sets of driving components 1002 are installed at the bottom of the template base 901. The driving component 1002 consists of a handwheel and a lead screw, wherein the handwheel is rotatably connected to one side of the bottom of the template base 901, the lead screw is fixed to the handwheel, and is threadedly connected to the rectangular frame 1001, and two lifting frames A10041 are fixedly connected in the rectangular frame 1001, and a lifting frame B10042 is fixedly connected, and the lifting frame B10042 is located between two adjacent lifting frames A10041, and the bottom of the deformation block A1003 and the four deformation blocks B1004 are fixedly connected to one end of the lifting shaft 1005, and the other end of the lifting shaft 1005 slides through the template base 901, and is used in conjunction with the lifting frame A10041 and the lifting frame B10042 respectively.

[0033] Initially, the bottom surface of the lifting shaft 1005 contacts the bottom surface of the inner wall of the rectangular frame 1001, and the top surfaces of the deformation block A 1003 and the deformation block B 1004 are at the same horizontal plane. At this time, the casting produced by the molded sand is Fig.12 The shape shown on the left in the figure is used when the casting needs to be formed into Fig.12When the shape shown in the center is formed, the staff rotates the hand wheel in the driving assembly 1002, the hand wheel drives the lead screw to rotate, the lead screw drives the rectangular frame 1001 to slide horizontally, the rectangular frame 1001 drives the two lifting frames A10041 and the lifting frame B10042 therein to move horizontally, the two lifting frames A10041 and the lifting frames B10042 respectively squeeze the corresponding lifting shafts 1005, the three lifting shafts 1005 are forced to slide upward along the inclined surfaces of the two lifting frames A10041 and the lifting frames B10042, and drive The deformation block A1003 and the deformation block B1004 are lifted up synchronously. When the lifting shaft 1005 corresponding to the deformation block A1003 contacts the middle plane of the lifting frame B10042, the hand wheel is no longer rotated, so that the two lifting frames A10041 and B10042 stop moving. The two lifting frames A10041 and B10042 respectively drive the deformation block A1003 and the deformation block B1004 to maintain a stable height through the corresponding lifting shaft 1005, so that the deformation block A1003 and the deformation block B1004 are in Fig.12 The shape shown in the center and the casting produced by the molding sand Fig.12 The shape shown in the center is when the casting needs to be formed into Fig.12 When the shape is shown on the right side of the figure, the staff member turns the hand wheel in the driving assembly 1002 again, so that the rectangular frame 1001 drives the two lifting frames A10041 and the lifting frames B10042 therein to move horizontally again. At this time, the lifting shaft 1005 corresponding to the deformation block B1004 slides horizontally along the surface of the two lifting frames A10041, and the lifting shaft 1005 corresponding to the deformation block A1003 slides along the inclined surface of the lifting frame B10042 and drives the deformation block A1003 to be lifted upward again, and the top surfaces of the deformation blocks A1003 and B1004 are misaligned until the lifting shaft 1005 corresponding to the deformation block A1003 slides to the top plane of the lifting frame B10042, so that the deformation blocks A1003 and B1004 are in the same shape. Fig.12 The shape shown on the right side of the figure makes the casting produced by the molding sand Fig.12 The shape shown on the right side of the figure can easily switch the shape of the molding sand, greatly improving work efficiency.

[0034] A molding process of a casting sand mold automatic molding device comprises the following steps: S1: Start the hydraulic cylinder B603. The telescopic end of the hydraulic cylinder B603 extends to drive the push rod 701 and the guide frame 604 to lift upward, thereby sliding the lock bar 605 and making the elastic wedge block 702 fit into the lock groove, thereby limiting the push rod 701, so that the push rod 701 drives the template base 901 to maintain a stable height, and start the sand drop box 102 to put the molding sand; S2: The telescopic end of the hydraulic cylinder A301 extends, so that the plurality of stirring rods 202 stir the molding sand. The telescopic end of the hydraulic cylinder A301 contracts, so that the plurality of stirring rods 202 are reset. The sliding plate 101 slides horizontally, so that the scraper 502 scrapes and smoothes the molding sand, and the pressing blocks 204 are continuously dropped on the molding sand, so that the density of the molding sand is increased. S3: The telescopic end of the hydraulic cylinder B603 contracts, and contacts the convex shaft through a plurality of pressure plates 802, so that the hammer 205 continuously hits the L-shaped rod A206, thereby causing the template base 901 to vibrate slightly, so that the molding sand and the template base 901 are loosened; S4: The positions of the deformation block A1003 and several deformation blocks B1004 are changed by the driving assembly 1002, so that the shape of the casting finally produced is changed.

[0035] The above description is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to those skilled in the art.

Claims

1. An automatic casting sand mold forming device, comprising a frame (1), a sliding plate (101) slidably connected inside the frame (1), a sand falling box (102) fixedly connected to the bottom of the sliding plate (101), a conveying track (103) arranged inside the frame (1), a compacting assembly installed at the bottom of the sliding plate (101), characterized in that: The frame (1) further comprises an evenly spreading mechanism, the evenly spreading mechanism comprising a telescopic shaft A (201), the telescopic shaft A (201) being arranged on the lower side of the sliding plate (101), a plurality of evenly distributed stirring rods (202) being arranged on the outer side of the telescopic shaft A (201), a flattening mechanism being arranged on the lower side of the frame (1), the flattening mechanism comprising two groups of inclined plates (203) being arranged on the lower side of the frame (1), a pressing block (204) being arranged on the upper side of the pressing block (204), and a plurality of stirring rods (202) being arranged on the upper side of the pressing block (204) so ​​as to match the two groups of inclined plates (203). A bidirectional elastic telescopic rod (2041) is used in combination with the frame (1); a demoulding mechanism is arranged on the lower side of the frame (1); the demoulding mechanism comprises a striking hammer (205); two striking hammers (205) are arranged on the lower side of the frame (1); and two L-shaped rods A (206) used in conjunction with the striking hammers (205) are arranged; a deformation block A (1003) is arranged on the lower side of the frame (1); and a plurality of evenly distributed deformation blocks B (1004) are arranged; the deformation block A (1003) is slidably connected to the plurality of deformation blocks B (1004).

2. The automatic sand casting molding equipment according to claim 1 is characterized in that: The spreading mechanism also includes a hydraulic cylinder A (301), the hydraulic cylinder A (301) is installed in the sand falling box (102) through a connecting plate, the telescopic end of the hydraulic cylinder A (301) is rotatably sleeved with a circular plate A (302), the top end of the telescopic shaft A (201) is fixedly connected to the telescopic end of the hydraulic cylinder A (301), an annular groove is provided at the bottom of the circular plate A (302), the top ends of a plurality of the stirring rods (202) are hinged with a slide seat, the slide seat is stuck in the annular groove and slides in the annular groove, the telescopic end of the telescopic shaft A (201) is fixedly connected with a circular plate B (303), a plurality of evenly distributed connecting rods (304) are hinged on the circular plate B (303), and the top ends of the plurality of connecting rods (304) are respectively hinged with a plurality of the stirring rods (202).

3. The automatic sand casting molding equipment according to claim 2 is characterized in that: The balancing mechanism further comprises a slider (402); a special-shaped track (401) is provided on the inner wall of the telescopic shaft A (201); and the slider (402) used in conjunction with the special-shaped track (401) is fixedly connected to the telescopic end of the telescopic shaft A (201).

4. The automatic sand casting molding equipment according to claim 3 is characterized in that: The paving mechanism further comprises an extension rod (501), the bottom of the sliding plate (101) is fixedly connected to the extension rod (501), the bidirectional elastic telescopic rod (2041) is penetrated and fixedly connected to the telescopic end of the extension rod (501), the pressing block (204) is fixedly connected to the telescopic end of the extension rod (501), a scraper (502) is fixedly connected to one side of the falling sand box (102), a special-shaped frame (5021) is symmetrically fixedly connected to the frame (1), and the inclined plate (203) is fixedly connected to the sliding plate (101). The special-shaped frame (5021) is fixedly connected, a guide plate (503) is fixedly connected inside the special-shaped frame (5021), a guide block (504) is fixedly connected to the guide plate (503), a transverse plate (505) is fixedly connected to the special-shaped frame (5021), the transverse plate (505) is fixedly connected to the guide plate (503) and the guide block (504), and a roller is rotatably connected to the telescopic end of the bidirectional elastic telescopic rod (2041), and the roller is used in conjunction with the guide block (504).

5. The automatic sand casting molding equipment according to claim 4 is characterized in that: The demoulding mechanism further comprises a support base (601), a mounting frame (602) being fixedly connected to the support base (601), a hydraulic cylinder B (603) being installed in the mounting frame (602), a guide frame (604) being fixedly connected to the telescopic end of the hydraulic cylinder B (603), a locking bar (605) being symmetrically slidably connected to the top of the mounting frame (602), a T-shaped shaft (606) being fixedly connected to one side of the locking bar (605), and a guide groove for use with the T-shaped shaft (606) being symmetrically provided in the guide frame (604).

6. The automatic sand casting molding equipment according to claim 5 is characterized in that: The demoulding mechanism also includes a push rod (701), the push rod (701) is slidably connected in the mounting frame (602), a rectangular groove is symmetrically provided at the bottom of the outer wall of the push rod (701), an elastic wedge block (702) is slidably connected in the rectangular groove, a locking groove for use with the elastic wedge block (702) is provided on the other side of the locking strip (605), and the bottom of the push rod (701) abuts against the telescopic end of the hydraulic cylinder B (603).

7. The automatic sand casting molding equipment according to claim 6 is characterized in that: The demoulding mechanism also includes an L-shaped rod B (801), the L-shaped rod B (801) is symmetrically fixedly connected to the guide frame (604), a plurality of pressure plates (802) are hingedly connected to one side of the L-shaped rod B (801), a first elastic member is arranged between each of the plurality of pressure plates (802) and the L-shaped rod B (801), a crank (803) is fixedly connected to one side of the striking hammer (205) via a connecting shaft, and a convex shaft used in conjunction with the plurality of pressure plates (802) is fixedly connected to one side of the crank (803).

8. The automatic sand casting molding equipment according to claim 7 is characterized in that: The invention also comprises a template base (901), the top end of the top rod (701) is fixedly connected to the template base (901), the deformation block A (1003) and a plurality of deformation blocks B (1004) are slidably connected to the template base (901), the striking hammer (205) is hinged to the bottom of the template base (901) through a vertical plate, the L-shaped rod A (206) is fixedly connected to the bottom of the template base (901), the left and right sides of the bottom of the template base (901) are symmetrically fixedly connected to L-shaped plates, the outer wall of the template base (901) is slidably sleeved with an outer frame (902), a vertical axis is fixedly connected to the L-shaped plate, the vertical axis is penetrated and slidably connected to the outer frame (902), and a second elastic member is arranged between the L-shaped plate and the outer frame (902).

9. The automatic sand casting molding equipment according to claim 8, characterized in that: The invention also comprises a rectangular frame (1001), wherein the bottom of the template base (901) is symmetrically slidably connected to the rectangular frame (1001), a driving assembly (1002) is installed at the bottom of the template base (901), and the driving assembly (1002) is connected to the rectangular frame (1001), two lifting frames A (10041) are fixedly connected inside the rectangular frame (1001), and a lifting frame B (10042) is fixedly connected thereto, and the bottoms of the deformation block A (1003) and a plurality of the deformation blocks B (1004) are fixedly connected to one end of a lifting shaft (1005), and the other end of the lifting shaft (1005) slides through the template base (901) and is used in conjunction with the lifting frame A (10041) and the lifting frame B (10042) respectively.

10. The molding process of the automatic molding equipment for casting sand mold according to claim 9 is characterized in that: The following steps are included: S1: Start the hydraulic cylinder B (603), the telescopic end of the hydraulic cylinder B (603) extends to drive the push rod (701) and the guide frame (604) to lift upward, thereby causing the locking bar (605) to slide and the elastic wedge block (702) to fit into the locking groove, thereby limiting the push rod (701), so that the push rod (701) drives the template base (901) to maintain a stable height, and the sand drop box (102) is started to release the molding sand; S2: the telescopic end of the hydraulic cylinder A (301) extends, so that the plurality of stirring rods (202) stir the molding sand; the telescopic end of the hydraulic cylinder A (301) contracts, so that the plurality of stirring rods (202) are reset; the sliding plate (101) slides horizontally, so that the scraper (502) scrapes and smoothes the molding sand, and the pressing blocks (204) are continuously dropped on the molding sand, so that the density of the molding sand is increased; S3: the telescopic end of the hydraulic cylinder B (603) contracts, and contacts the convex shaft through a plurality of the pressing plates (802), so that the striking hammer (205) continuously strikes the L-shaped rod A (206), thereby causing the template base (901) to vibrate slightly, thereby loosening the molding sand and the template base (901); S4: changing the positions of the deformation block A (1003) and a plurality of the deformation blocks B (1004) through the driving assembly (1002) so as to change the shape of the casting finally produced.

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