Core making equipment for casting sand core and using method

Abstract

The invention relates to the technical field of casting, in particular to core making equipment for casting sand cores and a using method, the core making equipment comprises an outer frame and a built-in frame, a printing bottom plate is arranged on the built-in frame, a plurality of chilling blocks are arranged on the printing bottom plate in a sliding mode, and a sliding assembly for driving the chilling blocks to move is arranged on the printing bottom plate; a coaming pipe is vertically arranged on the printing bottom plate in a sliding mode, the circumferential outer side wall of the printing bottom plate is tightly attached to the circumferential inner side wall of the coaming pipe, a lifting part for driving the coaming pipe to ascend and descend is arranged on the outer frame, a printing mechanism is arranged on the outer frame, and the printing mechanism is used for printing a chilling block on a sand core. The printing mechanism comprises a sand coating assembly and a glue coating assembly which are arranged on the outer frame, the glue coating assembly is used for spraying a casting binder on the casting sand, and the sand coating assembly is used for covering the sprayed casting binder with the casting sand. The cold iron has the effects of improving the fixing strength of the cold iron and the sand core and reducing the cold iron mounting difficulty.

Description

Technical Field

[0001] The present application relates to the field of casting technology, and in particular to a core making device for casting sand cores and a method for using the same. Background Art

[0002] Casting is a metal hot working process, in which molten metal is poured into a specific mold and cooled and solidified to form parts or blanks of the desired shape and size. Chilled iron plays a vital role in the casting process. Its main functions include reducing the size of the riser, improving the shrinkage feeding channel, controlling the solidification sequence of the casting, eliminating local thermal stress, preventing cracks, accelerating the solidification rate of the casting, refining the grain structure, and improving the mechanical properties of the casting.

[0003] With the promotion and application of 3D printing technology, the method of using 3D printed sand cores for casting production has gradually been applied in the industry. 3D printed sand cores use liquid connectors to solidify the layers of sand to create a three-dimensional solid prototype. In the design of conventional 3D printed sand core casting processes, the chill cannot be placed directly during the 3D printing sand core process due to the weight of the chill and the time required for the 3D printed material to solidify. Therefore, a chill groove for installing the chill is required on the sand core. After the sand core is printed and solidified, the chill is bonded to the chill groove.

[0004] However, since the volume of the liquid connector changes when the sand layer solidifies, there will be a design error in the size of the reserved chiller trough and the standard chiller. At the same time, the size of the chiller itself will also change during long-term use. This will eventually result in the chiller being unable to be installed on the chiller trough or the gap between the chiller trough and the chiller being too large, which will cause casting defects in the casting, which is a deficiency. Summary of the invention

[0005] In order to improve the problem that there is a problem that the chiller and the chiller trough cannot be installed or there is a large installation gap, the present application provides a core making device for casting sand cores and a use method.

[0006] In the first aspect, the present application provides a core making device for casting sand cores using the following technical solution: A core making device for casting sand cores, comprising an outer frame and an inner frame, wherein a printing base plate is arranged on the inner frame, a plurality of cold irons are slidably arranged on the printing base plate, a sliding assembly for driving the cold irons to move is arranged on the printing base plate, a panel tube is vertically slidably arranged on the printing base plate, the circumferential outer wall of the printing base plate is in close contact with the circumferential inner wall of the panel tube, a lifting member for driving the panel tube to rise and fall is arranged on the outer frame, a printing mechanism is arranged on the outer frame, the printing mechanism is used to print the cold irons on the sand core, the printing mechanism comprises a sand coating assembly and a glue coating assembly arranged on the outer frame, the glue coating assembly is used to spray a casting binder on the casting sand, and the sand coating assembly is used to cover the casting sand on the sprayed casting binder.

[0007] By adopting the above technical scheme, workers spray casting binder on the printing base plate according to the cross section of the sand core through the glue coating component, and then the sand coating component lays a layer of casting sand on the entire printing base plate, and then waits for the casting binder to solidify, and then the glue coating component sprays casting binder on the printing base plate according to the cross section of the sand core, and the sand coating component lays a layer of casting sand on the printing base plate, and repeats the above process until the solidified sand core reaches the designed position of the chill, and then the sliding component drives the chill to move to the designed position of the sand core and remains stationary. At this time, there is a height difference between the chill and the sand core, and then the glue coating component continues to spray casting binder on the casting sand, and the sand coating component continuously lays casting sand until the height difference is filled, and then the glue coating component sprays casting binder on the casting sand and the chill, and the sand coating component lays casting sand until the entire sand core is completed. In this process, the chill is fixed to the sand core by the solidified casting sand, and there is no need for workers to install and fix the chill, and it is fixed completely according to the size of the chill, which is conducive to reducing the possibility of the chill accidentally falling off the sand core.

[0008] Optionally, the sliding assembly includes a plurality of sliding rails arranged on the built-in frame, the sliding rails correspond one-to-one to the cold irons, a sliding seat slides on the sliding rails, a plurality of translation cylinders electrically connected to the control system are arranged on the built-in frame, the translation cylinders correspond one-to-one to the sliding rails, the sliding seat is arranged on the piston rod of the translation cylinder, a lifting cylinder which is vertical and electrically connected to the control system is arranged on the sliding seat, an avoidance groove for the piston rod of the lifting cylinder to pass through and slide is opened on the printing base plate, the cold iron is detachably arranged on the piston rod of the lifting cylinder, and a leakage-proof part for closing the avoidance groove is arranged on the printing base plate.

[0009] By adopting the above technical solution, when the solidified sand core reaches the designed position of the chiller, the worker starts the translation cylinder and the lifting cylinder through the control system. The piston rod of the translation cylinder pushes the slide seat to drive the lifting cylinder to slide, and the piston rod of the lifting cylinder drives the chiller to move to the designed position of the sand core. During the movement of the lifting cylinder, the leakage-proof parts prevent the casting sand from flowing out of the avoidance groove. When the sand core is solidified, the piston rod of the lifting cylinder is separated from the chiller. At this time, the chiller is prefabricated on the sand core, reducing the problem of dimensional error in installation.

[0010] Optionally, the lifting member includes a lifting cylinder arranged on the outer frame, a connecting plate is arranged on the piston rod of the lifting cylinder, the connecting plate is arranged on the enclosure tube, and the lifting cylinder is electrically connected to a control system.

[0011] By adopting the above technical solution, after the sand covering assembly lays a layer of foundry sand, the control system starts the lifting cylinder, and the piston rod of the lifting cylinder pushes the enclosure tube up a distance through the connecting plate, thereby reducing the possibility of the foundry sand flowing out of the enclosure tube, and at the same time making the foundry sand around the sand core support the sand core.

[0012] Optionally, the leakage-proof component includes a leakage-proof belt slidably mounted on the piston rod of the lifting cylinder, the leakage-proof belt is arranged along the length direction of the avoidance groove, both ends of the leakage-proof belt are wound with rotating shafts, a tape taking-up box is arranged on the printing base plate, and pressure strips are arranged between the two tape taking-up boxes and on both sides of the length direction of the leakage-proof belt, the leakage-proof belt is slidably fitted with the pressure strips, the rotating shaft is rotatably arranged in the tape taking-up box, and a torsion spring is arranged between the rotating shaft and the tape taking-up box.

[0013] By adopting the above technical solution, when the piston rod of the lifting cylinder slides along the length direction of the avoidance groove, the piston rod of the lifting cylinder drives the rotating shaft at one end of the leakage-proof belt to unwind the leakage-proof belt, and the leakage-proof belt at the other end reels the leakage-proof belt under the action of the torsion spring, thereby sealing the avoidance groove during the movement of the piston rod of the lifting cylinder. In this process, the pressure strip is helpful to reduce the possibility of leakage of casting sand due to the inward concave of the leakage-proof belt to open the avoidance groove.

[0014] Optionally, a first electric slide and a second electric slide are symmetrically arranged on the outer frame, and a third electric slide and a fourth electric slide are slidably mounted between the first electric slide and the second electric slide, one end of the third electric slide is arranged on the slider of the first electric slide, and the other end is slidingly matched with the second electric slide, one end of the fourth electric slide is arranged on the slider of the second electric slide, and the other end is slidingly matched with the first electric slide, and the first electric slide, the second electric slide, the third electric slide and the fourth electric slide are all electrically connected to the control system.

[0015] By adopting the above technical solution, the first electric slide drives the third electric slide to slide along the length direction of the first electric slide through its slider, and the second electric slide drives the fourth electric slide to slide along the length direction of the second electric slide through its slider.

[0016] Optionally, the glue coating component includes a glue coating cylinder electrically connected to a control system, the glue coating cylinder is vertically arranged on a slider of the third electric slide, a glue spray head is arranged on a piston rod of the glue coating cylinder, and the glue spray head is connected to a glue injection pipe joint for supplying glue.

[0017] By adopting the above technical solution, the first electric slide drives the third electric slide to slide along the length direction of the first electric slide through its slider, and the third electric slide drives the glue coating cylinder to slide along the length direction of the third electric slide through its slider. At the same time, the glue coating cylinder drives the glue spray head to move vertically, so that the glue spray head can move to any position in the three-dimensional space, so that the glue spray head can print complex sand core shapes.

[0018] Optionally, the sand covering component includes a sand covering cylinder electrically connected to the control system, the sand covering cylinder is arranged on the slider of the fourth electric slide, a sand covering box is arranged on the piston rod of the sand covering cylinder, a sand covering groove is opened on the sand covering box, the sand covering box is connected with a sand inlet pipe for sand injection, the sand covering box is provided with a sand sealing cylinder electrically connected to the control system, the sand sealing cylinder is provided with a plug plate on the piston rod, the plug plate is slidably matched with the sand covering box, and the plug plate is used to seal the sand covering groove of the sand covering box.

[0019] By adopting the above technical solution, when the lifting cylinder drives the enclosure tube to rise, the control system starts the sand covering cylinder, so that the piston rod of the sand covering cylinder drives the sand covering box to rise to the same height, and then the slider of the second electric slide drives the fourth electric slide to slide along the length direction of the second electric slide. At the same time, the sand sealing cylinder drives the plug plate to open the sand covering groove, and the casting sand in the sand covering box flows out from the sand covering groove, thereby covering the casting sand on the casting adhesive sprayed by the glue spray head, thereby realizing the sand core printing process.

[0020] Optionally, a curing lamp is provided on the side of the sand coating box facing away from the forward direction thereof, and the curing lamp is used to heat the casting sand flowing out of the sand coating box.

[0021] By adopting the above technical solution, when the casting binder is covered with casting sand, the curing lamp on the sand covering box heats and dries the covered casting sand, so that the casting binder can be quickly dried and cured, which is beneficial to reducing the time required for the casting binder to cure.

[0022] Optionally, a brush is provided on the side of the curing lamp facing away from the sand coating box, and the brush is used to sweep the casting sand in the enclosure tube.

[0023] By adopting the above technical scheme, the brush can flatten the upper surface of the casting sand in the enclosure tube, which is beneficial to improving the printing effect of the sand core. At the same time, the brush can sweep down the casting sand covering the chill, thereby reducing the accumulation of casting sand on the chill, which is beneficial to improving the fixing effect of the sand core on the chill.

[0024] In a second aspect, the present application provides a method for using a core making device for casting sand cores, using the following technical solution: A method for using a core making device for casting sand cores comprises the following steps: S1, the glue coating component sprays the casting binder on the printing base plate according to the cross section of the sand core, and the sand coating component lays a layer of casting sand on the printing base plate, and waits for the casting binder to solidify; S2, the lifting member pushes the apron tube to rise, the height of the apron tube is higher than the upper surface of the casting sand, and then the glue coating component sprays the casting binder again according to the cross section of the sand core, and then the sand coating component lays a layer of casting sand again, and waits for the casting binder to solidify again; S3, until the sand core reaches the designed position of the chill, the sliding assembly drives the chill to move to the designed position of the sand core, and at this time there is a height difference between the chill and the sand core; S4, the rubber-coated component continues to spray the casting binder on the casting sand, and the sand-coated component lays the casting sand on the sprayed casting binder until the height difference between the chill and the sand core is filled; S5, then the glue coating component sprays the casting binder on the casting sand and the chill, and the sand coating component lays the casting sand again until the entire sand core is completed.

[0025] By adopting the above technical solution, the chiller can be directly fixed on the sand core, which is helpful to reduce the difficulty of workers in installing the chiller, and at the same time is helpful to reduce the requirements for the size accuracy of the chiller groove when reserving the chiller groove on the sand core in the traditional way.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The worker sprays the casting binder on the printing base plate according to the cross section of the sand core through the glue coating component, and then the sand coating component lays a layer of casting sand on the entire printing base plate, and then waits for the casting binder to solidify, and repeats the above process until the solidified sand core reaches the designed position of the chill, and then the sliding component drives the chill to move to the designed position of the sand core and keeps it still, and then the glue coating component continues to spray the casting binder on the casting sand, and the sand coating component continues to lay the casting sand until the entire sand core is completed. In this process, the chill is fixed on the sand core by the solidified casting sand, and there is no need for workers to install and fix the chill, which is completely fixed according to the size of the chill; 2. When the solidified sand core reaches the designed position of the chiller, the worker starts the translation cylinder and the lifting cylinder through the control system. The piston rod of the translation cylinder pushes the slide seat to drive the lifting cylinder to slide, and the piston rod of the lifting cylinder drives the chiller to move to the designed position of the sand core. During the movement of the lifting cylinder, the leak-proof parts prevent the casting sand from flowing out of the avoidance groove. When the sand core is solidified, the piston rod of the lifting cylinder is separated from the chiller. At this time, the chiller is prefabricated on the sand core, reducing the size error problem in installation; 3. The brush can level the upper surface of the casting sand in the enclosure tube, which is beneficial to improve the printing effect of the sand core. At the same time, the brush can sweep down the casting sand covering the chiller, thereby reducing the accumulation of casting sand on the chiller, which is beneficial to improve the fixing effect of the sand core on the chiller. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view of the positional relationship between the sand-coated cylinder, the rubber-coated cylinder and the built-in frame in the embodiment of the present application.

[0029] Figure 3 It is a schematic structural diagram of the positional relationship among the cold iron, the lifting cylinder and the translation cylinder in the embodiment of the present application.

[0030] Figure 4 yes Figure 2 Enlarged view of part A.

[0031] Figure 5 yes Figure 3 Magnified view of part B.

[0032] Explanation of the reference numerals: 0, sand core; 1, outer frame; 2, inner frame; 3, printing base plate; 4, cold iron; 5, sliding assembly; 51, slide rail; 52, slide seat; 53, translation cylinder; 54, lifting cylinder; 55, avoidance groove; 56, leak-proof part; 561, leak-proof belt; 562, rotating shaft; 563, belt box; 564, belt pressure strip; 565, torsion spring; 6, enclosure tube; 7, lifting part; 71, lifting cylinder; 72, connecting plate; 8, printing mechanism; 81, cover Sand assembly; 811, sand covering cylinder; 812, sand covering box; 813, sand covering slot; 814, sand inlet pipe; 815, sand sealing cylinder; 816, plug plate; 82, glue covering assembly; 821, glue covering cylinder; 822, glue spray head; 823, glue injection pipe joint; 9, first electric slide; 10, second electric slide; 11, third electric slide; 12, fourth electric slide; 13, curing lamp; 14, brush; 15, collection box; 16, sand discharge pipe; 17, solenoid valve. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-Figure 5 This application is described in further detail.

[0034] Example 1 The embodiment of the present application discloses a core making device for casting sand cores.

[0035] Reference Figure 1 A core making device for casting sand cores comprises an outer frame 1 and an inner frame 2, wherein the inner frame 2 is located inside the outer frame 1, a printing base plate 3 is welded on the inner frame 2, and a surrounding plate tube 6 is vertically slidably arranged on the printing base plate 3.

[0036] Reference Figure 1 , Figure 2 and Figure 3 The circumferential outer wall of the printing base plate 3 is in close contact with the circumferential inner wall of the enclosure tube 6, a collecting box 15 is arranged below the enclosure tube 6, a vertical sand discharge pipe 16 is connected between the top and bottom of the printing base plate 3, the bottom of the sand discharge pipe 16 extends to the top of the collecting box 15, and a solenoid valve 17 electrically connected to the control system is arranged on the sand discharge pipe 16.

[0037] Reference Figure 1 , Figure 2 and Figure 3 A lifting member 7 for driving the enclosure tube 6 to rise and fall is arranged on the outer frame 1. The lifting member 7 includes a lifting cylinder 71 bolted to the outer frame 1 and placed vertically. The lifting cylinder 71 is electrically connected to the control system. A connecting plate 72 is welded to the end of the piston rod of the lifting cylinder 71, and the connecting plate 72 is welded to the outer wall of the enclosure tube 6.

[0038] Reference Figure 1 , Figure 2 and Figure 3 A plurality of chills 4 are slidingly arranged on the printing base plate 3, a sliding assembly 5 for driving the chills 4 to move is arranged on the printing base plate 3, a printing mechanism 8 for printing the chills 4 on the sand core 0 is arranged on the outer frame 1, the printing mechanism 8 includes a sand covering assembly 81 and a glue covering assembly 82 arranged on the outer frame 1, the glue covering assembly 82 is used for spraying a casting binder on the casting sand, and the sand covering assembly 81 is used for covering the casting sand on the sprayed casting binder.

[0039] The glue coating component 82 sprays the casting adhesive on the printing base plate 3 according to the cross-section of the sand core 0, and then the sand coating component 81 lays a layer of casting sand on the entire printing base plate 3, and then waits for the casting adhesive to solidify. Finally, the control system starts the lifting cylinder 71, and the piston rod of the lifting cylinder 71 pushes the enclosure tube 6 up a certain distance through the connecting plate 72, so that the casting sand around the solidified sand core 0 can support the sand core 0.

[0040] Reference Figure 1 and Figure 2A first electric slide 9 and a second electric slide 10 are symmetrically arranged on the top of the outer frame 1, and a third electric slide 11 and a fourth electric slide 12 are slidably mounted between the first electric slide 9 and the second electric slide 10. The third electric slide 11 and the fourth electric slide 12 are parallel to each other and both slide along the length direction of the first electric slide 9.

[0041] Reference Figure 1 and Figure 2 One end of the third electric slide 11 is bolted to the slider of the first electric slide 9, and the other end is slidably matched with the second electric slide 10. One end of the fourth electric slide 12 is bolted to the slider of the second electric slide 10, and the other end is slidably matched with the first electric slide 9. The first electric slide 9, the second electric slide 10, the third electric slide 11 and the fourth electric slide 12 are all electrically connected to the control system.

[0042] Reference Figure 1 and Figure 2 The glue coating component 82 includes a glue coating cylinder 821 electrically connected to the control system. The glue coating cylinder 821 is vertically bolted to the slider of the third electric slide 11. A glue spray head 822 is welded on the piston rod of the glue coating cylinder 821. The glue spray head 822 is connected to a glue injection pipe joint 823 for supplying glue. The glue injection pipe joint 823 is used to connect a hose.

[0043] Reference Figure 1 and Figure 2 The sand covering component 81 includes a sand covering cylinder 811 electrically connected to the control system. The sand covering cylinder 811 is vertical and bolted to the slider of the fourth electric slide 12. A sand covering box 812 is welded to the piston rod of the sand covering cylinder 811. A sand covering groove 813 is provided at the bottom of the sand covering box 812. The sand covering box 812 is connected to a sand inlet pipe 814 for sand injection. The sand covering box 812 is bolted to a sand sealing cylinder 815 electrically connected to the control system.

[0044] Reference Figure 1 , Figure 2 and Figure 4 A plug plate 816 is welded on the piston rod of the sand sealing cylinder 815, and the plug plate 816 slides with the sand covering box 812. The plug plate 816 is used to seal the sand covering groove 813 of the sand covering box 812. A curing lamp 13 is bolted on the side of the sand covering box 812 facing away from its forward direction. The curing lamp 13 is used to heat the casting sand flowing out of the sand covering box 812. A brush 14 is welded on the side of the curing lamp 13 facing away from the sand covering box 812. The brush 14 is used to sweep the casting sand in the enclosure tube 6.

[0045] The control system starts the first electric slide 9 and the third electric slide 11. The slider of the first electric slide 9 drives the third electric slide 11 to slide along the length direction of the first electric slide 9. The slider of the third electric slide 11 drives the glue coating cylinder 821 to slide along the length direction of the third electric slide 11. At the same time, the glue coating cylinder 821 drives the glue spray head 822 to move vertically through its piston rod, thereby realizing printing and spraying operations in three-dimensional space.

[0046] After the glue spray head 822 has finished spraying the cross section of a sand core 0, the control system drives the third electric slide 11 to move to one side of the fourth electric slide 12 through the first electric slide 9, and then the control system starts the second electric slide 10 and the fourth electric slide 12. The slider of the second electric slide 10 drives the third electric slide 11 to slide along the length direction of the second electric slide 10, and the slider of the fourth electric slide 12 drives the sand coating cylinder 811 to slide along the length direction of the fourth electric slide 12.

[0047] Then the control system starts the sand sealing cylinder 815, and the piston rod of the sand sealing cylinder 815 drives the plug plate 816 to move, and the plug plate 816 opens the sand covering groove 813, and the casting sand in the sand covering box 812 flows out from the sand covering groove 813 until a layer of casting sand is completely laid on the top of the enclosure tube 6. During this process, the curing lamp 13 heats the casting sand to accelerate the curing of the casting adhesive, and at the same time the brush 14 sweeps the casting sand on the top of the enclosure tube 6.

[0048] Reference Figure 2 , Figure 3 and Figure 5 The sliding assembly 5 includes a plurality of slide rails 51 welded on the built-in frame 2, the slide rails 51 correspond one-to-one to the cold iron 4, and a slide seat 52 slides on each slide rail 51. A plurality of translation cylinders 53 electrically connected to the control system are bolted to the built-in frame 2, and the translation cylinders 53 correspond one-to-one to the slide rails 51. The slide seat 52 is bolted to the piston rod of the translation cylinder 53.

[0049] Reference Figure 2 , Figure 3 and Figure 5 A vertical lifting cylinder 54 is bolted to the slide seat 52, and the lifting cylinder 54 is electrically connected to the control system. A plurality of avoidance grooves 55 are provided on the printing base plate 3 for the piston rod of the lifting cylinder 54 to pass through and slide. The avoidance grooves 55 correspond to the lifting cylinders 54 one by one. The cold iron 4 is plugged into the end of the piston rod of the lifting cylinder 54, and a leak-proof part 56 for closing the avoidance grooves 55 is arranged on the printing base plate 3.

[0050] Reference Figure 2 , Figure 3 and Figure 5The leak-proof component 56 includes a leak-proof belt 561 slidably mounted on the piston rod of the lifting cylinder 54 . The leak-proof belt 561 can be made of rubber material. The leak-proof belt 561 is arranged along the length direction of the avoidance groove 55 . A rotating shaft 562 is wound around both ends of the leak-proof belt 561 .

[0051] Reference Figure 2 , Figure 3 and Figure 5 , a tape collection box 563 is welded on the printing base plate 3 and at both ends of the anti-leakage belt 561, a pressure strip 564 is bolted between the two tape collection boxes 563 and on both sides of the length direction of the anti-leakage belt 561, the anti-leakage belt 561 and the pressure strip 564 are slidably matched, the rotating shaft 562 is rotatably arranged in the tape collection box 563, and a torsion spring 565 is arranged between the rotating shaft 562 and the tape collection box 563.

[0052] When the printing and curing position of the sand core 0 reaches the designed position of the cold iron 4, the control system starts the translation cylinder 53 and the lifting cylinder 54. The translation cylinder 53 pushes the lifting cylinder 54 to move through the slide 52. The piston rod of the lifting cylinder 54 drives the cold iron 4 to approach the sand core 0. At this time, there is a height difference between the cold iron 4 and the sand core 0. Then, during the spraying process, the glue spray head 822 will be driven by the glue coating cylinder 821 to move vertically.

[0053] Avoid hitting the cold iron 4 until the height difference between the cold iron 4 and the sand core 0 is filled. Finally, the glue spray head 822 will spray the casting adhesive on the cold iron 4 and the solidified sand core 0 at the same time. The sand covering box 812 lays the casting sand until the entire sand core 0 is completed. When the sand core 0 is solidified, the translation cylinder 53 drives the lifting cylinder 54 to move away from the cold iron 4. In the process of filling the height difference between the cold iron 4 and the sand core 0, the brush 14 will sweep down the casting sand laid on the cold iron 4.

[0054] During the sliding movement of the piston rod of the lifting cylinder 54 along the length direction of the avoidance groove 55, the piston rod of the lifting cylinder 54 drives the rotating shaft 562 at one end of the leakage-proof belt 561 to unwind the leakage-proof belt 561, and the leakage-proof belt 561 at the other end rewinds the leakage-proof belt 561 under the action of the torsion spring 565, thereby blocking the avoidance groove 55 during the movement of the piston rod of the lifting cylinder 54.

[0055] The implementation principle of Example 1 is as follows: the glue coating component 82 sprays the casting adhesive on the printing base plate 3 according to the cross-section of the sand core 0, and then the sand coating component 81 lays a layer of casting sand on the entire printing base plate 3, and then waits for the casting adhesive to solidify, and finally the control system starts the lifting cylinder 71, and the piston rod of the lifting cylinder 71 pushes the enclosure tube 6 up a certain distance through the connecting plate 72, so that the casting sand around the solidified sand core 0 can support the sand core 0.

[0056] The control system starts the first electric slide 9 and the third electric slide 11. The slider of the first electric slide 9 drives the third electric slide 11 to slide along the length direction of the first electric slide 9. The slider of the third electric slide 11 drives the glue coating cylinder 821 to slide along the length direction of the third electric slide 11. At the same time, the glue coating cylinder 821 drives the glue spray head 822 to move vertically through its piston rod, thereby realizing printing and spraying operations in three-dimensional space.

[0057] After the glue spray head 822 has finished spraying the cross section of a sand core 0, the control system drives the third electric slide 11 to move to one side of the fourth electric slide 12 through the first electric slide 9, and then the control system starts the second electric slide 10 and the fourth electric slide 12. The slider of the second electric slide 10 drives the third electric slide 11 to slide along the length direction of the second electric slide 10, and the slider of the fourth electric slide 12 drives the sand coating cylinder 811 to slide along the length direction of the fourth electric slide 12.

[0058] Then the control system starts the sand sealing cylinder 815, and the piston rod of the sand sealing cylinder 815 drives the plug plate 816 to move, and the plug plate 816 opens the sand covering groove 813, and the casting sand in the sand covering box 812 flows out from the sand covering groove 813 until a layer of casting sand is completely laid on the top of the enclosure tube 6. During this process, the curing lamp 13 heats the casting sand to accelerate the curing of the casting adhesive, and at the same time the brush 14 sweeps the casting sand on the top of the enclosure tube 6.

[0059] When the printing and curing position of the sand core 0 reaches the designed position of the cold iron 4, the control system starts the translation cylinder 53 and the lifting cylinder 54. The translation cylinder 53 pushes the lifting cylinder 54 to move through the slide 52. The piston rod of the lifting cylinder 54 drives the cold iron 4 to approach the sand core 0. At this time, there is a height difference between the cold iron 4 and the sand core 0. Then, during the spraying process, the glue spray head 822 will be driven by the glue coating cylinder 821 to move vertically.

[0060] Avoid hitting the cold iron 4 until the height difference between the cold iron 4 and the sand core 0 is filled. Finally, the glue spray head 822 will spray the casting adhesive on the cold iron 4 and the solidified sand core 0 at the same time. The sand covering box 812 lays the casting sand until the entire sand core 0 is completed. When the sand core 0 is solidified, the translation cylinder 53 drives the lifting cylinder 54 to move away from the cold iron 4. In the process of filling the height difference between the cold iron 4 and the sand core 0, the brush 14 will sweep down the casting sand laid on the cold iron 4.

[0061] During the sliding movement of the piston rod of the lifting cylinder 54 along the length direction of the avoidance groove 55, the piston rod of the lifting cylinder 54 drives the rotating shaft 562 at one end of the leakage-proof belt 561 to unwind the leakage-proof belt 561, and the leakage-proof belt 561 at the other end rewinds the leakage-proof belt 561 under the action of the torsion spring 565, thereby blocking the avoidance groove 55 during the movement of the piston rod of the lifting cylinder 54.

[0062] Example 2 Embodiment 2 of the present application discloses a method for using a core making device for casting sand cores, comprising the following steps: S1, the control system starts the first electric slide 9, the third electric slide 11 and the glue coating cylinder 821, the glue coating cylinder 821 drives the glue spray head 822 through its piston rod to spray the casting binder on the printing base plate 3 according to the cross section of the sand core 0, and then the control system drives the third electric slide 11 to move to one end of the first electric slide 9 through the first electric slide 9; S2, the control system starts the second electric slide 10 and the fourth electric slide 12, and the sand covering cylinder 811 drives the sand covering box 812 to slide along the length direction of the second electric slide 10, so as to lay the casting sand on the casting binder, and at the same time, the curing lamp 13 heats the casting sand flowing out of the sand covering box 812 to quickly solidify the casting binder; S3, the control system starts the lifting cylinder 71, and the piston rod of the lifting cylinder 71 pushes the apron tube 6 up a certain distance through the connecting plate 72; S4, repeat the above process until the sand core 0 reaches the designed position of the chill 4; S5, the control system starts the translation cylinder 53 and the lifting cylinder 54, and the cold iron 4 moves to the designed position of the sand core 0. At this time, there is a height difference between the cold iron 4 and the sand core 0, and then the glue spray head 822 cooperates with the sand covering box 812 during the spraying process to fill the height difference; S6, the glue spraying head 822 sprays the casting binder on the casting sand and the chill 4, and the sand covering box 812 lays the casting sand on the sprayed casting binder until the entire sand core 0 is completed; S7. When the sand core 0 is completely solidified, the translation cylinder 53 drives the lifting cylinder 54 to move away from the cold iron 4, the control system starts the solenoid valve 17, and the sand discharge pipe 16 discharges the casting sand in the enclosure pipe 6 into the collection box 15, and the worker can take out the sand core 0.

[0063] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A core making device for casting sand cores, characterized in that: The invention comprises an outer frame (1) and an inner frame (2), wherein a printing base plate (3) is arranged on the inner frame (2), a plurality of cold irons (4) are slidably arranged on the printing base plate (3), a sliding assembly (5) for driving the cold irons (4) to move is arranged on the printing base plate (3), a surrounding plate tube (6) is vertically slidably arranged on the printing base plate (3), the circumferential outer side wall of the printing base plate (3) is in close contact with the circumferential inner side wall of the surrounding plate tube (6), and a driving assembly (5) is arranged on the outer frame (1). A lifting member (7) is provided on the outer frame (1) for lifting the enclosure tube (6); a printing mechanism (8) is provided on the outer frame (1); the printing mechanism (8) is used for printing the cold iron (4) on the sand core (0); the printing mechanism (8) comprises a sand covering component (81) and a glue covering component (82) provided on the outer frame (1); the glue covering component (82) is used for spraying a casting binder on the casting sand; the sand covering component (81) is used for covering the casting sand on the sprayed casting binder.

2. The core making equipment for casting sand cores according to claim 1, characterized in that: The sliding assembly (5) comprises a plurality of sliding rails (51) arranged on the built-in frame (2), the sliding rails (51) corresponding to the cold iron (4) one by one, a sliding seat (52) slidingly arranged on the sliding rails (51), a plurality of translation cylinders (53) electrically connected to the control system arranged on the built-in frame (2), the translation cylinders (53) corresponding to the sliding rails (51) one by one, the sliding seat (52) arranged on the piston rod of the translation cylinder (53), a lifting cylinder (54) vertically arranged and electrically connected to the control system arranged on the sliding seat (52), an avoidance groove (55) for the piston rod of the lifting cylinder (54) to pass through and slide on the printing base plate (3), the cold iron (4) being detachably arranged on the piston rod of the lifting cylinder (54), and a leak-proof part (56) for closing the avoidance groove (55) arranged on the printing base plate (3).

3. The core making equipment for casting sand cores according to claim 2, characterized in that: The lifting member (7) comprises a lifting cylinder (71) arranged on the outer frame (1), a connecting plate (72) is arranged on the piston rod of the lifting cylinder (71), the connecting plate (72) is arranged on the enclosure tube (6), and the lifting cylinder (71) is electrically connected to a control system.

4. The core making equipment for casting sand cores according to claim 2, characterized in that: The leakage-proof component (56) comprises a leakage-proof belt (561) slidably mounted on the piston rod of the lifting cylinder (54), the leakage-proof belt (561) being arranged along the length direction of the avoidance groove (55), both ends of the leakage-proof belt (561) being wound with a rotating shaft (562), a tape collection box (563) being arranged on the printing base plate (3), a tape pressing strip (564) being arranged between the two tape collection boxes (563) and on both sides of the length direction of the leakage-proof belt (561), the leakage-proof belt (561) and the tape pressing strip (564) being slidably matched, the rotating shaft (562) being rotatably arranged in the tape collection box (563), and a torsion spring (565) being arranged between the rotating shaft (562) and the tape collection box (563).

5. The core making equipment for casting sand cores according to claim 3, characterized in that: A first electric slide (9) and a second electric slide (10) are symmetrically arranged on the outer frame (1); a third electric slide (11) and a fourth electric slide (12) are slidably mounted between the first electric slide (9) and the second electric slide (10); one end of the third electric slide (11) is arranged on the slider of the first electric slide (9), and the other end is slidably matched with the second electric slide (10); one end of the fourth electric slide (12) is arranged on the slider of the second electric slide (10), and the other end is slidably matched with the first electric slide (9); the first electric slide (9), the second electric slide (10), the third electric slide (11) and the fourth electric slide (12) are all electrically connected to a control system.

6. The core making equipment for casting sand cores according to claim 5, characterized in that: The glue coating component (82) includes a glue coating cylinder (821) electrically connected to a control system, the glue coating cylinder (821) is vertically arranged on a slider of the third electric slide (11), a glue spray head (822) is arranged on a piston rod of the glue coating cylinder (821), and the glue spray head (822) is connected to a glue injection pipe joint (823) for supplying glue.

7. The core making equipment for casting sand cores according to claim 6, characterized in that: The sand covering component (81) includes a sand covering cylinder (811) electrically connected to the control system, the sand covering cylinder (811) is arranged on the slider of the fourth electric slide (12), a sand covering box (812) is arranged on the piston rod of the sand covering cylinder (811), a sand covering slot (813) is opened on the sand covering box (812), a sand inlet pipe (814) for sand injection is connected to the sand covering box (812), a sand sealing cylinder (815) electrically connected to the control system is arranged on the sand covering box (812), a plug plate (816) is arranged on the piston rod of the sand sealing cylinder (815), the plug plate (816) is slidably matched with the sand covering box (812), and the plug plate (816) is used to block the sand covering slot (813) of the sand covering box (812).

8. The core making equipment for casting sand cores according to claim 7, characterized in that: A curing lamp (13) is provided on the side of the sand coating box (812) facing away from the forward direction thereof, and the curing lamp (13) is used to heat the casting sand flowing out of the sand coating box (812).

9. The core making equipment for casting sand cores according to claim 8, characterized in that: A brush (14) is provided on the side of the curing lamp (13) facing away from the sand coating box (812), and the brush (14) is used to sweep the casting sand in the enclosure tube (6).

10. A method for using the core making device for casting sand cores according to any one of claims 1 to 9, characterized in that: The steps include: S1, the glue coating component (82) sprays a casting binder on the printing base plate (3) according to the cross section of the sand core (0), and the sand coating component (81) lays a layer of casting sand on the printing base plate (3), and waits for the casting binder to solidify; S2, the lifting member (7) pushes the enclosing plate tube (6) to rise, the height of the enclosing plate tube (6) is higher than the upper surface of the casting sand, and then the glue coating component (82) sprays the casting binder again according to the cross section of the sand core (0), and then the sand coating component (81) lays a layer of casting sand again, and waits for the casting binder to solidify again; S3, until the sand core (0) reaches the designed position of the chill (4), the sliding assembly (5) drives the chill (4) to move to the designed position of the sand core (0), at which time there is a height difference between the chill (4) and the sand core (0); S4, the glue coating component (82) continues to spray the casting binder on the casting sand, and the sand coating component (81) lays the casting sand on the sprayed casting binder until the height difference between the chill (4) and the sand core (0) is filled; S5, the glue coating component (82) then sprays the casting adhesive on the casting sand and the chill (4), and the sand coating component (81) lays the casting sand again until the entire sand core (0) is completed.

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