Forming apparatus and forming method for square crucibles

Abstract

The present invention relates to the technical field of molding of clay materials, and specifically discloses a molding device and molding method of a square crucible, wherein a feeding container is arranged above a mold and can move along the contour direction of the mold, and a frame is provided with a control component for driving the feeding container to move; the top of a feeding pipe is slidably connected with the feeding container along the thickness direction of a mold cavity, and the bottom is inserted in the mold cavity; a ramming rod is arranged adjacent to the feeding pipe, and its top is vertically slidably connected with the feeding container, and the bottom is inserted in the mold cavity; a power member is used to drive the ramming rod to slide back and forth; a transmission member connects the ramming rod and the feeding pipe, and when the ramming rod slides back and forth, the feeding pipe is driven to slide back and forth through the transmission member. In the molding device of the square crucible of the present invention, the control component makes the moving trajectory of the feeding container variable, so that it can match molds of various shapes, thereby improving the adaptability of the device; the reciprocating sliding of the feeding pipe makes the material distribution in the thickness direction of the mold cavity more uniform.

Description

Technical Field

[0001] The invention relates to the technical field of clay material molding, and in particular to a square crucible molding device and a molding method. Background Art

[0002] Crucible is a cup-shaped vessel widely used in laboratories and industries, mainly used for high-temperature heating or melting of solids. There are various methods for forming it, which mainly depends on the material, capacity and required performance of the crucible. The main methods for forming crucibles include grouting, masonry, pressure forming and pneumatic tamping. Among them, the pneumatic tamping method uses a pneumatic tamping machine to strongly compact and vibrate the refractory material in the mold to make it evenly distributed and expel the internal air.

[0003] The Chinese patent document with the authorization announcement number CN110053130B discloses a ramming and molding machine, including a machine body, a ramming device and a rotating worktable. The ramming device and the rotating worktable are arranged side by side and are both mounted on the machine body. A ramming and molding mold is provided on the rotating worktable. A mold cavity for processing sand material is provided inside the ramming and molding mold. A distributor fixed to the machine body is provided above the ramming and molding mold. A discharge port corresponding to the mold cavity is provided on the side of the distributor. When the rotating worktable drives the ramming and molding mold to rotate, the material can flow into the mold cavity through the distributor and the discharge port, thereby achieving laying in the mold cavity. The ramming device rams the material laid in the mold cavity up and down until the height of the desired molded product is reached, thereby completing the molding of a product.

[0004] The mold cavity achieves uniform laying of the material in its circumferential direction through turnover motion. However, in the thickness direction of the mold cavity, the material distribution is not uniform, but piled up in the mold cavity in the shape of hills, which is not conducive to uniform compaction of the material in the thickness direction of the mold cavity. Summary of the invention

[0005] The present invention provides a square crucible forming device and a forming method, aiming to solve the problem of uneven distribution of materials in the thickness direction of a mold cavity in the related art.

[0006] The forming device of the square crucible of the present invention comprises a frame, a mold, a feeding mechanism, a tamping device and a transmission member, wherein the mold is arranged on the frame, the mold comprises a mold core, a mold sleeve sleeved on the outer side of the mold core, and a mold cavity formed between the mold core and the mold sleeve; the feeding mechanism comprises a feeding container and a feeding pipe, the feeding container is arranged above the mold and can move along the contour direction of the mold, and the frame is provided with a control component for driving the feeding container to move; the top of the feeding pipe is slidably connected with the feeding container along the thickness direction of the mold cavity, and the bottom is inserted in the mold cavity, and the feeding pipe is used for introducing the sand material in the feeding container into the mold cavity; the tamping device comprises a tamping rod and a power member, the tamping rod is arranged adjacent to the feeding pipe, and the top of the tamping rod is vertically slidably connected with the feeding container, and the bottom is inserted in the mold cavity; the power member is used for driving the tamping rod to slide back and forth so that the tamping rod tames the sand material in the mold cavity; the transmission member connects the tamping rod and the feeding pipe, and when the tamping rod slides back and forth, the feeding pipe is driven to slide back and forth through the transmission member.

[0007] The effect is that the control component controls the moving track of the material discharge container so that it is not limited to a circle, thereby achieving adaptation to molds of elliptical, square, rectangular or other special shapes, thereby improving the adaptability of the device. When the ramming rod rams the sand material, it can drive the material discharge pipe to slide back and forth along the thickness direction of the mold cavity through the transmission member, thereby achieving uniform material distribution of the material discharge pipe in the thickness direction of the mold cavity, avoiding the sand material from being piled up in a hill-like shape in the thickness direction of the mold cavity, and the uniform distribution of the sand material in the thickness direction of the mold cavity improves the uniformity of the sand material after compaction.

[0008] Preferably, the transmission part includes an annular part, a telescopic part and a pushing part. A limiting cylinder covering the outside of the ramming rod is fixed on the discharge container. The annular part is sleeved on the ramming rod and clamped between the ramming rod and the limiting cylinder. One of the annular part and the limiting cylinder is provided with a spiral groove, and the other is provided with a spiral push rod fitted in the spiral groove. The cooperation between the spiral groove and the spiral push rod is used to make the annular part deflect when sliding. A transmission seat is provided on the sliding sleeve of the outer wall of the discharge tube, and the two ends of the telescopic part are respectively hinged to the transmission seat and the annular part. The pushing part is provided on the ramming rod and is used to push the annular part to slide. A reset part is also connected between the annular part and the limiting cylinder.

[0009] The effect is that when the push piece slides with the ramming rod, it can push the annular piece to slide, and the annular piece drives the telescopic piece and the transmission seat to slide. Under the cooperation of the spiral groove and the spiral push rod, the annular piece deflects, and the deflection causes the telescopic piece to move while telescoping, and the telescopic piece drives the discharge pipe to move along the thickness direction of the mold cavity through the transmission seat. When the ramming rod slides in the opposite direction, the annular piece is reset under the action of the reset piece, thereby realizing the reset of the telescopic piece to the discharge pipe part, thereby realizing the reciprocating sliding of the discharge pipe, and the discharge pipe can also scrape the sand material near the lower end of the discharge pipe in the mold cavity when reciprocatingly sliding, so that it is more evenly distributed.

[0010] Preferably, the pushing member includes a wedge-shaped block located below the annular member, the interior of the ramming rod has a cavity, the wedge-shaped block is slidably embedded in the side wall of the cavity and is connected to the ramming rod through an elastic member, and in a natural state, the elastic member pulls the wedge-shaped block into the cavity and makes the wedge-shaped block completely enter the inner side of the ramming rod; a pressure block is slidably fitted in the cavity, and the pressure block can squeeze the wedge block when sliding, so that at least part of the wedge block is exposed on the outside of the ramming rod, and a driver for driving the pressure block to slide is provided in the cavity.

[0011] The effect is that after the wedge block is exposed, when the ramming rod drives the wedge block to move upward, the wedge block can push the ring member upward, thereby realizing the sliding of the feed tube. When the ramming rod moves downward, the driver controls the pressing block to reset, and the wedge block quickly resets under the action of the elastic member, thereby realizing the avoidance of the ring member. The ring member quickly moves downward under the action of the reset member, and the ring member drives the feed tube to quickly slide in the opposite direction. The feed tube can hit the side wall of the mold cavity, thereby generating vibration, which will promote the falling of the sand material in the feed tube and reduce the blockage of the feed tube.

[0012] Preferably, the discharge container includes a discharge barrel and a delivery tube eccentrically arranged at the bottom of the discharge barrel, the diameter of the delivery tube is larger than that of the discharge tube, and the two are opposite to each other up and down; a retaining edge is formed on the outer peripheral side of the upper end of the discharge tube, and the retaining edge covers the lower end of the delivery tube from bottom to top to make the delivery tube communicate with the discharge tube, and the rest of the part is covered, one of the retaining edge and the delivery tube is provided with a slide groove, which extends along the thickness direction of the mold cavity, and the other is provided with a sliding member, which slides in cooperation with the slide groove.

[0013] Preferably, a stirring rod extending into the outlet pipe is provided on the retaining edge, and the stirring rod is used to stir the sand material in the outlet pipe when sliding along with the retaining edge.

[0014] Preferably, the power part includes a piston cylinder and an air pipe, the piston cylinder is vertically arranged in the lower barrel, the top end of the tamping rod extends into the piston cylinder and forms a piston part that seals with the piston cylinder, and the piston part is connected to the piston cylinder by an elastic part; one end of the air pipe is connected to the piston cylinder, and the other end extends to the outside of the lower barrel and is used to connect to an external air source.

[0015] The effect is that when the air source supplies air to the piston cylinder through the air pipe, the piston part moves up under the action of air pressure, driving the ramming rod to move up. When the ramming rod moves up to the set amount, the air supply is interrupted, the air pressure disappears, and the piston part moves downward rapidly under the action of the elastic member, and the ramming rod falls down to ram the sand material laid in the mold cavity and compact it. The reciprocating sliding of the ramming rod is achieved by repeatedly turning the air source on and off, thereby achieving the ramming of the sand material.

[0016] Preferably, a control plate is slidably mounted on the outlet tube, and the control plate is used to control the opening size of the tube channel of the outlet tube; a head is slidably fitted at the lower end of the piston cylinder, and the head is used to adjust the volume size between it and the piston part; the control plate and the head are connected by a synchronous adjustment member, and the synchronous adjustment member is used to control the synchronous sliding of the control plate and the head, so that the tube channel of the outlet tube and the volume between the head and the piston part change synchronously.

[0017] Preferably, the synchronous adjustment member includes a gear shaft rotatably arranged below the lower barrel and a synchronous motor driving the gear shaft to rotate, the gear shaft is connected to the control panel through a first gear rack mechanism, and the gear shaft is connected to the head through a second gear rack mechanism.

[0018] The effect is that the synchronous adjustment member forms a corresponding relationship between the ramming force of the ramming rod and the laying thickness of the sand material, ensuring that the two change synchronously, which not only reduces the impact loss of the ramming rod, but also ensures the ramming effect of the sand material.

[0019] Preferably, the control component includes a center shaft and a limit disk body. The center shaft is vertically arranged and rotatably installed on a frame. A power motor is provided on the frame. The power motor is connected to the center shaft through a bevel gear pair to drive the center shaft to rotate; the discharge barrel is connected to the center shaft through a spring sleeve rod; the limit disk body is concentrically placed above the mold and is detachably connected to the frame, and the edge contour direction of the limit disk body is consistent with the contour direction of the mold; a rotatable drag reduction component is provided on the outer wall of the discharge barrel, and under the pulling force of the spring sleeve rod, the drag reduction component is close to the edge of the limit disk body.

[0020] The method for forming a square crucible of the present invention uses the above-mentioned square crucible forming device and comprises the following steps:

[0021] The control component controls the material discharge container to move along the contour direction of the mold, and the material discharge container drives the material discharge pipe to move along the contour direction of the mold cavity, and at the same time, the material discharge pipe guides the sand material in the material discharge container into the mold cavity;

[0022] The power part drives the ramming rod to slide up and down reciprocatingly, and the ramming rod rams and compacts the newly laid sand material in the mold cavity;

[0023] When the ramming rod slides, the feeding pipe is driven by the transmission member to slide back and forth along the thickness direction of the mold cavity, and the feeding pipe evenly lays the sand material in the mold cavity.

[0024] The effect is that the control component controls the moving trajectory of the material discharge container so that it can match molds of various shapes, thereby improving the adaptability of the device. When the ramming rod is ramming, it can drive the material discharge pipe to evenly spread the material in the thickness direction of the mold cavity, avoiding the accumulation of sand in the shape of hills in the thickness direction of the mold cavity, and improving the uniformity of the sand after compaction.

[0025] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0026] 1. The control component makes the moving trajectory of the discharge container variable, so that it can match molds of various shapes and improve the adaptability of the device; the transmission part links the ramming of the ramming rod and the sliding of the discharge pipe, so that the distribution of the discharge pipe in the thickness direction of the mold cavity is more uniform, and the uniformity of the sand after compaction is improved; the ramming rod is set close to the discharge pipe, so that the discharge and ramming are close together to avoid being too far apart. The newly laid sand will be scattered due to the vibration caused by the ramming before it is rammed.

[0027] 2. The retraction and avoidance of the wedge block and the force storage push of the reset part speed up the downward movement of the annular part, so that the feed tube can hit the side wall of the mold cavity when sliding in the reverse direction, thereby causing vibration and reducing the blockage of the feed tube.

[0028] 3. The synchronous adjustment part forms a corresponding relationship between the ramming force of the ramming rod and the laying thickness of the sand material, ensuring that the two change synchronously, which not only reduces the impact loss of the ramming rod, but also ensures the ramming effect of the sand material. In addition, in the initial stage of the formation of the square crucible, "more laying and heavier beating" can be used to improve work efficiency; in the final stage of the formation of the square crucible, "less laying and lighter beating" can be used to ensure the accuracy of the forming height. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the appearance of a forming device for a square crucible of the present invention.

[0030] Figure 2 The present invention Figure 1 An enlarged schematic diagram of point 1 in the middle.

[0031] Figure 3 It is a cross-sectional schematic diagram of the feeding mechanism to the tamping device part of the present invention.

[0032] Figure 4 The present invention Figure 3 A magnified schematic diagram of point B in the middle.

[0033] Figure 5 The present invention Figure 3 Enlarged schematic diagram of point C in the middle.

[0034] Figure 6 It is a three-dimensional schematic diagram of the portion from the feed tube to the retaining edge of the present invention.

[0035] Figure 7 It is a schematic diagram of the structure of the control component to the synchronous adjustment component part of the present invention.

[0036] Figure 8 It is a schematic top view of the mold of the present invention.

[0037] Reference numerals:

[0038] 1. Frame; 11. Electric gripper;

[0039] 2. mold; 21. mold core; 22. mold sleeve; 23. mold cavity;

[0040] 3. Feeding mechanism; 31. Feeding container; 311. Feeding barrel; 3111. Slope; 312. Lead-out pipe; 3121. Sliding member; 32. Feeding pipe; 321. Stop edge; 3211. Stirring rod; 322. Transmission seat;

[0041] 4. Rammer; 41. Ramming rod; 411. Piston; 412. Connecting spring; 42. Power member; 421. Piston cylinder; 422. Air pipe;

[0042] 5. Transmission member; 51. Ring member; 52. Telescopic member; 53. Push member; 531. Wedge block; 54. Limiting cylinder; 541. Connecting cylinder; 542. Expansion cylinder; 5421. Spiral groove; 55. Reset spring; 56. Tension spring; 57. Press block; 58. Driver; 581. Electromagnet; 582. Permanent magnet; 583. Return spring;

[0043] 6. Control assembly; 61. Central axis; 62. Limiting disc; 63. Power motor; 64. Spring sleeve rod; 65. Vertical rod; 66. Drag reduction component;

[0044] 7. Control panel;

[0045] 8. Head sealing;

[0046] 9. Synchronous adjustment member; 91. Gear shaft; 92. Synchronous motor; 93. First gear rack mechanism; 94. Second gear rack mechanism. DETAILED DESCRIPTION

[0047] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0048] Combine the following Figures 1 to 8 The present invention describes a square crucible forming device and a forming method.

[0049] like Figure 1 to Figure 2 The square crucible forming device of the present invention comprises a frame 1, a mold 2, a material discharge mechanism 3, a tamping device 4 and a transmission member 5.

[0050] Continue to refer Figure 1 and Figure 7The mold 2 includes a mold core 21, a mold sleeve 22 and a mold cavity 23. The mold core 21 and the mold sleeve 22 are both installed on the frame 1, and the mold sleeve 22 is sleeved on the outside of the mold core 21, and the mold cavity 23 is formed between the mold core 21 and the mold sleeve 22. It can be understood that the mold core 21 and the mold sleeve 22 have the same shape, which can be circular, elliptical, square, rectangular or other special shapes. In this embodiment, a square is taken as an example, and the shape of the mold cavity 23 is a "Hu" shape corresponding to the square. The extension direction of the "Hu" shape is the contour direction of the mold cavity 23. The vertical distance between the inner and outer peripheries of the "Hu" shape is the thickness of the mold cavity 23. In other words, the vertical distance between the two side walls of the mold cavity 23 is the thickness of the mold cavity 23, and this direction is the thickness direction of the mold cavity 23. The mold cavity 23 is used to form the surrounding walls of the square crucible. The frame 1 is also provided with an electric clamp 11. There are multiple electric clamps 11 distributed around the mold sleeve 22. The electric clamps 11 are used to clamp the mold sleeve 22 from the outside to the inside to make the mold 2 more stable.

[0051] Continue to refer Figure 1 , Figure 3 , Figure 4 and Figure 6 The material discharging mechanism 3 includes a material discharging container 31 and a material discharging pipe 32. The material discharging container 31 is arranged above the mold 2 and can move along the contour direction of the mold 2. It includes a material discharging barrel 311 and a guide pipe 312 eccentrically arranged at the bottom of the material discharging barrel 311. The top end of the guide pipe 312 is connected to the material discharging barrel 311, and the bottom end is located below the material discharging barrel 311. The bottom of the material discharging barrel 311 forms a slope 3111 inclined toward the guide pipe 312, so that the sand material in it flows to the guide pipe 312.

[0052] The feed tube 32 is located below the outlet tube 312 and opposite to the outlet tube 312. The diameter of the tube is smaller than that of the outlet tube 312. A retaining edge 321 is formed on the outer peripheral side of the upper end of the feed tube 32. The retaining edge 321 covers the lower end of the outlet tube 312 from bottom to top, so that the outlet tube 312 and the feed tube 32 are connected. Except for the connecting part between the outlet tube 312 and the feed tube 32, the part of the lower end of the outlet tube 312 that is larger than the tube of the feed tube 32 is covered by the retaining edge 321. A slide groove is provided on the retaining edge 321. The extending direction of the slide groove is consistent with the thickness direction of the mold cavity 23. The feed tube 312 is provided with a sliding member 3121. The sliding member 3121 includes a connecting portion and a protruding portion. The protruding portion is connected to the feed tube 312 through the connecting portion. The connecting portion is slidably matched in the slide groove. The protruding portion extends to all sides relative to the connecting portion and supports the retaining edge 321 at the bottom. When the feed tube 32 slides with the stop edge 321, the stop edge 321 always keeps the portion of the outlet tube 312 beyond the feed tube 32 closed. The stop edge 321 is provided with a stirring rod 3211 extending into the outlet tube 312, and the stirring rod 3211 is used to stir the sand material in the outlet tube 312 when sliding with the stop edge 321 to prevent the outlet tube 312 from being blocked. The bottom of the feed tube 32 is inserted into the mold cavity 23, and the sand material in the feed tube 311 can be introduced into the mold cavity 23 through the outlet tube 312 and the feed tube 32 to achieve laying.

[0053] Continue to refer Figure 1 , Figure 3 and Figure 7 The frame 1 is provided with a control assembly 6 for driving the unloading container 31 to move. The control assembly 6 includes a central shaft 61 and a limit plate body 62. The central shaft 61 is vertically arranged and concentric with the mold 2, and is rotatably mounted on the frame 1. The frame 1 is provided with a power motor 63, and the power motor 63 is connected to the central shaft 61 through a bevel gear pair to drive the central shaft 61 to rotate. The unloading barrel 311 is connected to the central shaft 61 through a spring sleeve rod 64. In other embodiments, the spring sleeve rod 64 can also be replaced by a spring telescopic rod, a telescopic frame with a built-in spring, or other spring components.

[0054] The limit plate body 62 is placed concentrically above the mold 2, and its center is detachably connected to the frame 1 through a vertical rod 65. The rod 65 passes through the inner space of the mold core 21. The detachable connection can be a bolt connection, a screw connection, etc., which is a conventional technology and will not be repeated here. The edge contour direction of the limit plate body 62 is consistent with the contour direction of the mold 2. The outer wall of the discharge barrel 311 is provided with a rotatable drag reduction member 66. Under the pulling force of the spring sleeve rod 64, the drag reduction member 66 is close to the edge of the limit plate body 62. The drag reduction member 66 can be a swivel rotatably mounted on the outer wall of the limit plate body 62, or a rolling ball or a ball rollingly embedded on the outer wall of the discharge barrel 311, or a combination of a swivel rotatably mounted on the outer wall of the limit plate body 62 and a ball rotatably embedded on the swivel. This ball is not limited to one, but can also be a plurality of balls evenly distributed along the circumference of the swivel. The specific form of the drag reducing member 66 is not limited, as long as it can reduce the friction between the lower barrel 311 and the limiting disc 62 when the lower barrel 311 revolves.

[0055] When the power motor 63 is started, the central shaft 61 is driven to rotate, and the central shaft 61 drives the discharge barrel 311 to revolve through the spring sleeve rod 64. Under the elastic tension of the spring sleeve rod 64, the discharge barrel 311 will bring the drag reducing member 66 close to the edge of the limit plate body 62. When the radial dimension of the limit plate body 62 passed by changes, the distance between the discharge barrel 311 and the center of the limit plate body 62 will also change accordingly, so that the spring sleeve rod 64 can be extended and retracted to adapt to the change. The spring sleeve rod 64 not only realizes the effect of bringing the discharge barrel 311 to revolve, but also enables the discharge barrel 311 to flexibly change in the radial direction of the limit plate body 62, while ensuring the close contact between the discharge barrel 311 and the edge of the limit plate body 62, and realizing the effect of the discharge barrel 311 moving along the contour direction of the mold 2. When the discharge barrel 311 moves along the contour direction of the mold 2, the discharge pipe 32 realizes the effect of evenly spreading the material in the contour direction of the mold cavity 23. Therefore, the present invention has lower requirements on the shape of the mold 2. In other words, the present invention can be applied to more diverse molds 2 as long as the contour of the limiting plate body 62 is consistent with the contour of the mold 2, thereby improving the adaptability of the device.

[0056] Continue to refer Figure 1 , Figure 3 and Figure 7 The ramming device 4 includes a ramming rod 41 and a power member 42. The ramming rod 41 is arranged adjacent to the feeding tube 32, and its top is vertically slidably connected with the feeding barrel 311, and its bottom is inserted in the mold cavity 23. The power member 42 is used to drive the ramming rod 41 to slide back and forth, so that the ramming rod 41 rams the sand material in the mold cavity 23.

[0057] The power member 42 includes a piston cylinder 421 and an air pipe 422, and the piston cylinder 421 is vertically arranged in the unloading barrel 311. It is worth noting that the piston cylinder 421 is concentric with the unloading barrel 311. The top of the ramming rod 41 extends into the piston cylinder 421 and forms a piston portion 411 that is sealed and matched with the piston cylinder 421. The piston portion 411 is connected to the piston cylinder 421 by an elastic member, and the elastic member includes a connecting spring 412 located below the piston portion 411 and fixedly connected to the piston portion 411 and the piston cylinder 421 at both ends. One end of the air pipe 422 is connected to the piston cylinder 421 and the connection is located below the piston portion 411, and the other end extends to the outside of the unloading barrel 311 and is used to connect an external air source. In the present embodiment, the air pipe 422 can be a telescopic tube or a hose, in order to adapt to the movement of the unloading barrel 311 in the radial direction of the limit disk body 62; the external air source is a prior art and will not be repeated here.

[0058] When the air source supplies air to the piston cylinder 421 through the air pipe 422, the piston part 411 moves up under the action of air pressure, driving the ramming rod 41 to move up. When the ramming rod 41 moves up to a set amount, the air supply is interrupted, the air pressure disappears, and the piston part 411 moves downward rapidly under the action of the connecting spring 412, and the ramming rod 41 falls down to ram the sand material laid in the mold cavity 23 and compact it. The ramming rod 41 is arranged in close proximity to the feeding pipe 32, so that the feeding and ramming are close together to avoid being too far apart. When the newly laid sand material is not rammed, it will be scattered due to the vibration caused by the ramming.

[0059] Continue to refer Figure 1 , Figure 2 and Figure 5 The transmission member 5 connects the ramming rod 41 and the feed tube 32. When the ramming rod 41 slides back and forth up and down, the transmission member 5 can drive the feed tube 32 to slide back and forth along the thickness direction of the mold cavity 23, thereby achieving uniform material laying of the feed tube 32 in the thickness direction of the mold cavity 23, avoiding the hill-like accumulation of sand in the thickness direction of the mold cavity 23. The uniform distribution of sand in the thickness direction of the mold cavity 23 improves the uniformity of the sand after compaction.

[0060] The transmission member 5 includes an annular member 51, a telescopic member 52 and a push member 53. A limiting cylinder 54 is fixed on the lower barrel 311 and is covered on the outer side of the ramming rod 41. The limiting cylinder 54 includes a connecting cylinder 541 and an expansion cylinder 542. The expansion cylinder 542 is located below the lower barrel 311 and is connected to the lower barrel 311 through the connecting cylinder 541. The diameter of the expansion cylinder 542 is larger than the connecting cylinder 541. The annular member 51 is sleeved on the ramming rod 41 and clamped between the ramming rod 41 and the expansion cylinder 542. The inner wall of the expansion cylinder 542 is provided with a spiral groove 5421, and its spiral rise angle is greater than the equivalent friction angle. The outer wall of the annular member 51 is provided with a spiral push rod matched in the spiral groove 5421. The cooperation between the spiral groove 5421 and the spiral push rod is used to deflect the annular member 51 when sliding. The outer wall sliding sleeve of the feeding tube 32 is provided with a transmission seat 322, and the two ends of the telescopic member 52 are respectively hinged with the transmission seat 322 and the ring member 51. The telescopic member 52 is used to drive the feeding tube 32 to slide when the ring member 51 deflects. The telescopic member 52 can be a telescopic rod, a telescopic plate, etc. The push member 53 is arranged on the ramming rod 41 and is used to push the ring member 51 to slide. A reset member for resetting the ring member 51 is also connected between the ring member 51 and the expansion cylinder 542. Here, the reset member can directly adopt a reset spring 55. It should be noted that in this embodiment, the ring member 51 can also be composed of a sleeve plate and a cover plate. The cover plate is rotatably arranged at the end of the sleeve plate. The cover plate is connected to the reset spring 55. The sleeve plate is connected to the spiral push rod and the telescopic member 52. In this way, when the ring member 51 slides, the sleeve plate deflects, but the cover plate does not rotate, thereby avoiding the torsion effect on the reset spring 55 and realizing the protection of the reset spring 55.

[0061] When the ramming rod 41 slides vertically, it will drive the push piece 53 to slide, and the push piece 53 will contact the ring member 51 and push the ring member 51 to slide, and the ring member 51 will drive the telescopic member 52 and the transmission seat 322 to slide together. Under the cooperation of the spiral groove 5421 and the spiral push rod, the ring member 51 will also deflect when sliding, and the deflection will cause the telescopic member 52 to move while telescoping, and the telescopic member 52 drives the discharge tube 32 to move along the thickness direction of the mold cavity 23 through the transmission seat 322. When the ramming rod 41 slides in the opposite direction, the ring member 51 is reset under the action of the reset spring 55, so as to realize the reciprocating sliding of the telescopic member 52 to the discharge tube 32, thereby realizing the reciprocating sliding of the discharge tube 32, and the discharge tube 32 can also scrape the sand material near the lower end of the discharge tube 32 in the mold cavity 23 when sliding back and forth, so that it is more evenly distributed.

[0062] In order to achieve a more violent impact effect between the feed tube 32 and the side wall of the mold cavity 23 when resetting, the push member 53 includes a wedge block 531 located below the annular member 51. The ramming rod 41 has a cavity inside. The wedge block 531 is slidably embedded in the side wall of the cavity and connected to the ramming rod 41 through an elastic member. In a natural state, the elastic member pulls the wedge block 531 into the cavity and makes the wedge block 531 enter the inner side of the ramming rod 41 completely. Here, the elastic member can directly use a tension spring 56.

[0063] A pressing block 57 is slidably fitted in the cavity. The pressing block 57 can squeeze the wedge block 531 when sliding, so that part of the wedge block 531 is exposed outside the ramming rod 41. A driver 58 for driving the pressing block 57 to slide is provided in the cavity. The driver 58 can be an electric push rod or an electromagnetic drive. Taking the electromagnetic drive as an example, the driver 58 includes an electromagnet 581 and a permanent magnet 582 which are arranged in the cavity and spaced apart from each other. The permanent magnet 582 is connected to the ramming rod 41 through a return spring 583. The permanent magnet 582 is connected to the pressing block 57 through a connecting rod. When the electromagnet 581 is energized, a repulsive force is given to the permanent magnet 582, so that the permanent magnet 582 moves with the pressing block 57 to the wedge block 531, thereby causing the pressing block 57 to squeeze the wedge block 531; when the electromagnet 581 is powered off, the permanent magnet 582 is reset under the action of the return spring 583, and the pressing block 57 is reset accordingly.

[0064] After the wedge block 531 is exposed, when the ramming rod 41 drives the wedge block 531 to move upward, the wedge block 531 can push the ring member 51 upward, thereby realizing the sliding of the feed tube 32. When the ramming rod 41 moves downward, the driver 58 controls the pressing block 57 to reset, and the wedge block 531 quickly resets under the tension spring 56, thereby realizing the avoidance of the ring member 51. The ring member 51 quickly moves downward under the action of the reset spring 55, and the ring member 51 will drive the feed tube 32 to quickly slide in the opposite direction. The feed tube 32 can hit the side wall of the mold cavity 23, thereby generating vibration, which will promote the sand material in the feed tube 32 to fall, reducing the blockage of the feed tube 32.

[0065] Continue to refer Figures 2 to 7 A control board 7 is slidably mounted on the outlet pipe 312. The sliding direction of the control board 7 is consistent with the horizontal direction. The control board 7 is used to control the opening size of the inner channel of the outlet pipe 312. The lower end of the piston cylinder 421 is slidably matched with a head 8. The head 8 is used to adjust the volume between it and the piston part 411. The control board 7 and the head 8 are connected by a synchronous adjustment member 9. The synchronous adjustment member 9 is used to control the synchronous sliding of the control board 7 and the head 8, so that the inner channel of the outlet pipe 312 and the volume between the head 8 and the piston part 411 change synchronously.

[0066] There is an installation box below the unloading barrel 311, and the synchronous adjustment member 9 includes a gear shaft 91 and a synchronous motor 92. The gear shaft 91 is rotatably installed in the installation box, and the synchronous motor 92 is installed on the installation box and is used to drive the gear shaft 91 to rotate. The gear shaft 91 is connected to the control panel 7 through a first gear rack mechanism 93, and the gear shaft 91 is connected to the head 8 through a second gear rack mechanism 94.

[0067] When the power motor 63 is started, the driving gear shaft 91 rotates, and the gear shaft 91 drives the control plate 7 to slide through the first gear rack mechanism 93, and drives the head 8 to slide through the second gear rack mechanism 94, thereby achieving synchronous sliding of the two, and realizing the opening size of the channel in the outlet pipe 312, which changes synchronously with the volume size between the head 8 and the piston part 411.

[0068] This arrangement is for when the inner channel of the outlet pipe 312 is opened relatively small, the flow of the sand material in the outlet pipe 312 is relatively small, and the laying thickness of the sand material in the die cavity 23 will be reduced, but the laying is more accurate. At the same time, the end cap 8 will slide away from the piston portion 411, and the volume between the two will increase. When the gas volume of the gas source is unchanged each time, the gas volume will preferentially fill the above-mentioned volume, and then form the air pressure acting on the piston portion 411. Due to the increase in the above-mentioned volume, the air pressure acting on the piston portion 411 will decrease, and thus the rising height of the piston portion 411 will decrease, and the reciprocating stroke of the ramming rod 41 will decrease, so that the ramming force of the ramming rod 41 to the sand material is weakened. On the contrary, when the inner channel of the outlet pipe 312 is opened relatively large, the laying thickness of the sand material in the die cavity 23 will increase, but the laying accuracy will decrease; and the volume between the end cap 8 and the piston portion 411 will decrease, and the ramming force of the ramming rod 41 to the sand material is enhanced. In this way, a corresponding relationship can be formed between the ramming force of the ramming rod 41 and the thickness of the sand material, ensuring that the two change synchronously, which not only reduces the impact loss of the ramming rod 41, but also ensures the ramming effect of the sand material.

[0069] When the square crucible has not yet reached the molding height stage, you can "spread more and hit harder", which improves the work efficiency; when the square crucible is about to reach the molding height stage, you can "spread less and hit lighter", which ensures the accuracy of the molding height and avoids exceeding the set height, thereby ensuring the molding quality of the square crucible.

[0070] In the "more paving and heavy beating" stage, the flow of sand in the feed tube 32 is large and easy to be blocked. At this time, the upward stroke of the ramming rod 41 is large, the ring 51 is lifted higher by the wedge block 531, and the return spring 55 stores more power. When the wedge block 531 is retracted, the return spring 55 moves the ring 51 and the feed tube 32 in the opposite direction, and the impact of the feed tube 32 on the side wall of the mold cavity 23 is large, which prevents the blockage of sand. In the "less paving and light beating" stage, the flow of sand in the feed tube 32 is small, and the risk of blockage is reduced. At this time, the upward stroke of the ramming rod 41 is small, the ring 51 is lifted lower by the wedge block 531, and the return spring 55 stores less power. When the wedge block 531 is retracted, the impact of the feed tube 32 on the side wall of the mold cavity 23 is small, which can also prevent the blockage of sand. This arrangement makes the impact force of the feed pipe 32 correspond to the degree of blockage of the sand material, which not only avoids the feed pipe 32 from being hit violently all the time and affecting its service life, but also achieves a good anti-blockage effect.

[0071] In other embodiments, the synchronous adjustment member 9 can also be a combination of electronically controlled components, such as a flow sensor, a controller, an electric telescopic rod, etc. The flow sensor is mounted on the feeding tube 32 and is used to detect the flow of sand in the feeding tube 32. The controller is mounted on the feeding barrel 311 and is electrically connected to the flow sensor. Two electric telescopic rods can be provided and both are installed in the installation box, respectively used to control the sliding of the control board 7 and the end cap 8. The electric telescopic rod is electrically connected to the controller. The controller is used to receive data from the flow sensor and control the synchronous extension and retraction of the two electric telescopic rods, thereby realizing the synchronous sliding of the control board 7 and the end cap 8.

[0072] refer to Figures 1 to 8 The present invention also provides a method for forming a square crucible, using the above-mentioned square crucible forming device, comprising the following steps:

[0073] The control component 6 controls the discharge container 31 to move along the contour direction of the mold 2 , and the discharge container 31 drives the discharge pipe 32 to move along the contour direction of the mold cavity 23 . At the same time, the discharge pipe 32 guides the sand in the discharge container 31 into the mold cavity 23 .

[0074] The power member 42 drives the ramming rod 41 to slide reciprocatingly up and down, and the ramming rod 41 rams and compacts the newly laid sand material in the mold cavity 23.

[0075] When the ramming rod 41 slides, the feeding tube 32 is driven by the transmission member 5 to slide back and forth along the thickness direction of the mold cavity 23 , and the feeding tube 32 evenly lays the sand material in the mold cavity 23 .

[0076] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0077] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0078] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A square crucible forming device, comprising a frame (1) and a mold (2) arranged on the frame (1), the mold (2) comprising a mold core (21), a mold sleeve (22) sleeved on the outside of the mold core (21), and a mold cavity (23) formed between the mold core (21) and the mold sleeve (22), characterized in that: The machine also comprises a feeding mechanism (3), a tamping device (4) and a transmission member (5); the feeding mechanism (3) comprises a feeding container (31) and a feeding pipe (32); the feeding container (31) is arranged above the mould (2) and is movable along the contour direction of the mould (2); the frame (1) is provided with a control component (6) for driving the feeding container (31) to move; the top of the feeding pipe (32) is slidably connected to the feeding container (31) along the thickness direction of the mould cavity (23); the bottom of the feeding pipe (32) is inserted into the mould cavity (23); the feeding pipe (32) is used to guide the sand material in the feeding container (31) into the mould cavity (23); the tamping device (4) comprises a tamping rod (41) and a power member (42), the ramming rod (41) is arranged adjacent to the discharge tube (32), and its top is vertically slidably connected to the discharge container (31), and its bottom is inserted into the mold cavity (23); the power member (42) is used to drive the ramming rod (41) to slide back and forth, so that the ramming rod (41) rams the sand material in the mold cavity (23); the transmission member (5) connects the ramming rod (41) and the discharge tube (32), and when the ramming rod (41) slides back and forth, the discharge tube (32) is driven to slide back and forth through the transmission member (5); when the ramming rod (41) slides up and down, the discharge tube (32) can be driven to slide back and forth along the thickness direction of the mold cavity (23) through the transmission member (5); The transmission member (5) comprises an annular member (51), a telescopic member (52) and a pushing member (53); a limiting cylinder (54) is fixed to the unloading container (31) and is arranged on the outside of the ramming rod (41); the annular member (51) is sleeved on the ramming rod (41) and is clamped between the ramming rod (41) and the limiting cylinder (54); one of the annular member (51) and the limiting cylinder (54) is provided with a spiral groove (5421); the other is provided with a spiral groove (5421) and a spiral groove (5421) is provided. The spiral push rod inside, the spiral groove (5421) and the spiral push rod cooperate to make the annular member (51) deflect when sliding; the outer wall sliding sleeve of the feeding tube (32) is provided with a transmission seat (322), and the two ends of the telescopic member (52) are respectively hinged to the transmission seat (322) and the annular member (51); the pushing member (53) is provided on the ramming rod (41) and is used to push the annular member (51) to slide, and a reset member is also connected between the annular member (51) and the limiting cylinder (54); The material discharge container (31) comprises a material discharge barrel (311) and an outlet pipe (312) eccentrically arranged at the bottom of the material discharge barrel (311); the diameter of the outlet pipe (312) is larger than that of the material discharge pipe (32), and the two are opposite to each other up and down; a retaining edge (321) is formed on the outer peripheral side of the upper end of the material discharge pipe (32); the retaining edge (321) covers the lower end of the outlet pipe (312) from bottom to top, so that the outlet pipe (312) and the material discharge pipe (32) are connected, and the remaining part is covered; one of the retaining edge (321) and the outlet pipe (312) is provided with a slide groove, and the slide groove extends along the thickness direction of the mold cavity (23); the other is provided with a sliding member (3121), and the sliding member (3121) is slidably matched with the slide groove.

2. The square crucible forming device according to claim 1, characterized in that: The pushing member (53) comprises a wedge-shaped block (531) located below the annular member (51); the interior of the ramming rod (41) has a cavity; the wedge-shaped block (531) is slidably embedded in the side wall of the cavity and connected to the ramming rod (41) via an elastic member; in a natural state, the elastic member pulls the wedge-shaped block (531) into the cavity and causes the wedge-shaped block (531) to completely enter the inner side of the ramming rod (41); A pressing block (57) is slidably engaged in the cavity. The pressing block (57) is capable of pressing the wedge block (531) when sliding, so that at least a portion of the wedge block (531) is exposed outside the ramming rod (41). A driver (58) for driving the pressing block (57) to slide is provided in the cavity.

3. The square crucible forming device according to claim 1, characterized in that: The retaining edge (321) is provided with a stirring rod (3211) extending into the outlet pipe (312). The stirring rod (3211) is used to stir the sand material in the outlet pipe (312) when sliding along the retaining edge (321).

4. The square crucible forming device according to claim 1, characterized in that: The power member (42) comprises: A piston cylinder (421), the piston cylinder (421) is vertically arranged in the discharge cylinder (311), the top end of the tamping rod (41) extends into the piston cylinder (421) and forms a piston portion (411) that seals with the piston cylinder (421), and the piston portion (411) and the piston cylinder (421) are connected via an elastic member; An air pipe (422), one end of which is in communication with the piston cylinder (421), and the other end of which extends to the outside of the lower cylinder (311) and is used to connect to an external air source.

5. The square crucible forming device according to claim 4, characterized in that: A control panel (7) is slidably mounted on the outlet pipe (312), and the control panel (7) is used to control the opening size of the channel in the outlet pipe (312); The lower end of the piston cylinder (421) is slidably fitted with a sealing head (8), and the sealing head (8) is used to adjust the volume between the sealing head (8) and the piston portion (411); The control plate (7) and the sealing head (8) are connected via a synchronous adjustment member (9), and the synchronous adjustment member (9) is used to control the synchronous sliding of the control plate (7) and the sealing head (8), so that the volume of the channel inside the outlet pipe (312) and the space between the sealing head (8) and the piston portion (411) changes synchronously.

6. The square crucible forming device according to claim 5, characterized in that: The synchronous adjustment member (9) comprises a gear shaft (91) rotatably arranged below the lower barrel (311) and a synchronous motor (92) driving the gear shaft (91) to rotate; the gear shaft (91) is connected to the control panel (7) via a first gear rack mechanism (93); and the gear shaft (91) is connected to the sealing head (8) via a second gear rack mechanism (94).

7. The square crucible forming device according to claim 1, characterized in that: The control component (6) comprises: A central shaft (61), the central shaft (61) is vertically arranged and rotatably mounted on the frame (1), a power motor (63) is provided on the frame (1), the power motor (63) is connected to the central shaft (61) via a bevel gear pair to drive the central shaft (61) to rotate; the unloading barrel (311) is connected to the central shaft (61) via a spring sleeve rod (64); A limit plate body (62) is concentrically placed above the mold (2) and is detachably connected to the frame (1); the edge contour direction of the limit plate body (62) is consistent with the contour direction of the mold (2); a rotatable drag reduction member (66) is provided on the outer wall of the discharge barrel (311); under the pulling force of the spring sleeve rod (64), the drag reduction member (66) is closely attached to the edge of the limit plate body (62).

8. A method for forming a square crucible, characterized in that: The forming device of the square crucible according to claim 1 comprises the following steps: The control component (6) controls the discharge container (31) to move along the contour direction of the mold (2), and the discharge container (31) drives the discharge pipe (32) to move along the contour direction of the mold cavity (23), and at the same time, the discharge pipe (32) guides the sand material in the discharge container (31) into the mold cavity (23); The power member (42) drives the ramming rod (41) to slide reciprocatingly up and down, and the ramming rod (41) rams and compacts the newly laid sand material in the mold cavity (23); When the ramming rod (41) slides, the transmission member (5) drives the feed pipe (32) to slide back and forth along the thickness direction of the mold cavity (23), and the feed pipe (32) evenly lays the sand material in the mold cavity (23).

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