Metal casting leftover material cutting device

Abstract

The invention discloses a metal casting leftover material cutting device, relates to the technical field of metal casting leftover material cutting, and aims to solve the technical problem that the metal casting leftover material cutting device is low in cutting efficiency for high-strength one-mold multi-cavity metal castings. The metal casting leftover material cutting device comprises a cutting machine body, a lifting mechanism, a cutting mechanism and a clamping and positioning mechanism; the cutting mechanism comprises a mounting seat, the mounting seat is fixedly arranged at the movable end of the lifting mechanism, a reducing assembly is arranged on the mounting seat, and cutting assemblies are arranged on the reducing assembly in an annular equal-interval structure. Through the structural design of the cutting mechanism, a plurality of cutting parts can cut excess materials at the pouring gate parts around the metal casting at the same time, rotation of the metal casting does not need to be manually controlled, and the cutting efficiency of the pouring gate of the metal casting is improved; by rotating the adjusting ring, the multiple vertical plates can simultaneously drive the multiple cutting parts to conduct position adjustment in the centripetal direction, and the sprue cutting device is suitable for sprue cutting of various metal castings.

Description

Technical Field

[0001] The invention relates to the technical field of metal casting scrap removal, and more particularly to a metal casting scrap removal device. Background Art

[0002] Metal castings refer to the process of pouring liquid metal into the mold cavity through the casting process, and obtaining a casting with a certain shape and performance after it cools and solidifies. Specifically, the casting process of metal castings is: make a corresponding model according to the shape and size of the required casting, then put the metal material into the furnace to heat and melt it, pour the molten liquid metal into the mold cavity (make sure that the metal liquid fills all parts of the cavity), and then cool and solidify to form a solid metal casting with the same shape as the cavity, and finally take out the casting and clean it to remove the sand, burrs and flash on the surface of the casting.

[0003] The structural design of the metal casting mold cavity is closely related to the type, size and production efficiency requirements of the casting product. In order to improve the casting efficiency of metal castings, a simultaneous casting process of multiple metal castings is usually adopted. The commonly used method is to design a multi-cavity mold, such as the design of a "one mold, multiple cavities" casting cavity. Specifically, multiple cavities are arranged in the same mold according to a certain rule (such as linear arrangement, radial arrangement or grid arrangement), and the main runner branch connects multiple cavities. Through the shared runner system, multiple castings can be cast at one time, thereby improving casting efficiency and reducing the time cost of a single casting. However, since the cavity and the main runner are connected, when the liquid metal fills the cavity through the main runner, cross runner and inner runner, the metal in the runner system will solidify at the same time as the casting. Due to the large cross-sectional area of ​​the runner and the slow heat dissipation, the last solidified metal will remain in the runner to form a gate and a riser, resulting in, for example Fig.13 or Fig.14 In order to save waste material, the overall structure shown, especially some small castings, is adopted Fig.14 In the injection molding method, the casting has multiple layers from the outside to the inside. Therefore, in order to obtain the metal casting, a cutting device is required to cut off the residual metal at the connection between the gate and the casting.

[0004] In the prior art, a pouring head separator is usually used to cut "one mold, multiple cavities" type metal castings. However, when using the traditional pouring head separator, the worker needs to control the cutting mechanism with one hand to cut, and control the rotation of the metal casting with the other hand, and then cut one by one. Manual operation is time-consuming and labor-intensive, and the pouring head cutting efficiency is low. Therefore, people have designed a metal casting pouring head cutting device that can cut multiple castings at the same time. For example, the patent with the authorization announcement number CN118404040B discloses a metal casting and forging pouring head cutting device. As a special cutting device, it is provided with two groups of cutting machines for synchronous cutting of two pouring heads, which can be cut in batches, and the two cutting machines in each group cut the same pouring head, which greatly shortens the cutting time of a single pouring head; in addition, the clamping assembly installed on the cutting machine can keep the pouring head clamped during the cutting process, thereby improving the stability of the cutting process. However, the cutting device can actually only cut multiple metal castings located on the same axis at the same time, and cannot cut multiple metal castings from multiple angles at the same time. In order to cut from multiple angles at the same time, multiple sets of cutting machines need to be set up. For high-strength small-sized one-mold multi-cavity metal castings, due to their high cutting force requirements, small drive motors are prone to insufficient power, while large multiple drive motors will cause the device to become larger in size, complex to control, and have high requirements on the control system, which is costly. Therefore, the existing high-strength small-sized one-mold multi-cavity metal castings mostly use single-axis cutting equipment, and the cutting efficiency is low. Therefore, it is necessary to design a device with an integrated transmission structure that can efficiently cut high-strength one-mold multi-cavity metal castings. In view of this, we propose a cutting device for cutting the pouring riser of "one-mold multi-cavity" type metal castings. Summary of the invention

[0005] The object of the present invention is to provide a device for cutting off scraps of metal castings, so as to solve the technical problem that the device for cutting off scraps of metal castings has low cutting efficiency for high-strength single-mold multi-cavity metal castings.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a device for removing scraps from metal castings, comprising a cutting body, a lifting mechanism arranged in a cutting cavity of the cutting body, a cutting mechanism for a metal casting gate arranged at a movable end of the lifting mechanism, and a clamping and positioning mechanism arranged below the cutting mechanism; the cutting mechanism comprises a mounting seat, a reducing assembly, a plurality of cutting assemblies and a rotating assembly; the mounting seat is fixedly arranged at the movable end of the lifting mechanism, and a through cavity is arranged on the mounting seat; the reducing assembly comprises a fixing ring, and the fixing ring is arranged on the through cavity, A plurality of vertical plates are provided in an annular structure with equal spacing below the fixed ring, and an adjusting ring is rotatably connected to the fixed ring; the rotating assembly includes an outer tooth ring B, which is rotatably arranged on the outer edge surface of the adjusting ring, and an inner tooth groove is provided on the inner edge surface of the outer tooth ring B; the cutting assembly includes a cutting part, and several of the cutting parts are respectively arranged at the bottom ends of several of the vertical plates, and the input ends of several of the cutting parts are connected to the inner tooth groove through a variable diameter transmission part; several of the vertical plates can move centripetally or eccentrically at the same time, so that the size of the cutting cavity formed by several of the cutting assemblies can be changed. The present invention, through the structural design of the cutting mechanism, enables several cutting parts to simultaneously cut the residual material at the gate parts around the metal casting, without the need to manually control the rotation of the metal casting, thereby improving the cutting efficiency of the metal casting gate, and through the structural design of the variable diameter assembly, the rotating adjusting ring can enable several vertical plates to simultaneously drive several cutting parts to adjust the position in the centripetal direction, which is suitable for the gate cutting of various metal castings, and the large power of the rotating assembly drives multiple small cutting assemblies, while ensuring the cutting force, the overall volume of the device is small.

[0007] Preferably, a mounting cavity is formed at the top of the mounting seat, a round through groove is formed at the bottom of the mounting cavity, and the through cavity is formed by connecting the mounting cavity and the round through groove.

[0008] Preferably, the top of the fixed ring is an annular structure with equal spacing and is provided with a plurality of centripetal grooves, a slider is slidably connected to the centripetal groove, a centripetal rod is fixed to the centripetal end of the slider, the centripetal ends of the centripetal rods respectively pass through the plurality of centripetal grooves and extend into the fixed ring and are respectively fixedly connected to the tops of the plurality of vertical plates, the fixed ring is fixed on the circular groove, a plurality of arc cavities are provided on the fixed ring relative to the plurality of centripetal grooves, and the top of the arc cavity is connected to a snap-in tooth groove with an arc-shaped structure.

[0009] Preferably, a plurality of inclined guide grooves are provided at the bottom end of the adjusting ring relative to the plurality of centripetal slide grooves, and an inclined rod is slidably connected to the inclined guide groove, and the centripetal end of the inclined rod is rotatably connected to the centripetal end of the centripetal rod through a movable column, and a plurality of gear grooves equal in number to the plurality of inclined guide grooves are provided in an annular equidistant structure on the adjusting ring, and a circular groove is provided on one side of the gear groove, and the circular groove is connected to the gear groove through a snap-in slide groove A, and a snap-in slide groove B is provided at the bottom end of the circular groove, and a rotating ring A is fixed at the bottom end of the adjusting ring, and the rotating ring A is rotatably connected to the top end of the fixed ring.

[0010] Preferably, the fixing ring is connected to the adjusting ring by a clamping assembly, and the clamping assembly comprises an elliptical block and a clamping tooth block A, the elliptical block is arranged in the circular groove, the elliptical block is rotatably connected to the circular groove by a connecting shaft, the top end of the connecting shaft passes through the circular groove, extends to the outside of the adjusting ring and is fixedly provided with an adjusting gear, the bottom end of the connecting shaft passes through the clamping slide groove B and is fixedly provided with a plurality of ball blocks B in an annular equidistant structure, the bottom end of the connecting shaft is sleeved with a clamping tooth block B, the clamping tooth block B is slidably connected to the clamping slide groove B, the clamping tooth block B is clamped and connected to the clamping tooth groove, a plurality of thread grooves are provided on the inner cavity of the clamping tooth block B relative to the positions of the plurality of ball blocks B, and the thread groove is movably connected to the ball block B, wherein the rotation angle of the thread groove is 90°, an elliptical guide groove is provided on the surface of the elliptical block, the clamping tooth block A is slidably arranged on the clamping slide groove A, and the clamping tooth block A is movably connected to the elliptical guide groove by the ball block A.

[0011] Preferably, several of the adjusting gears are meshed and connected through an adjusting component, the adjusting component includes a rotating ring B, the rotating ring B is rotatably arranged on the top of the adjusting ring, a worm ring is fixedly provided on the top of the rotating ring B, an outer gear ring A is fixedly provided on the worm ring, several of the adjusting gears are meshed and connected with the outer gear ring A, a worm is meshed and connected on the worm ring, adjusting rods are fixedly provided at both ends of the worm, the adjusting rods are rotatably connected to the top of the adjusting ring through a swivel seat, one of the adjusting rods passes through the swivel seat at one end away from the worm and is provided with an adjusting screw groove.

[0012] Preferably, the cutting part includes an installation unit and a connecting shaft A, the installation unit is rotatably arranged at the bottom end of the centripetal side of the vertical plate, a cutting blade is installed on the installation unit, the connecting shaft A is rotatably arranged at the bottom end of the eccentric side of the vertical plate, and the connecting shaft A is fixedly connected to the installation unit, and a bevel gear A is fixedly provided on the connecting shaft A.

[0013] Preferably, the transmission part includes a bevel gear B, which is meshed and connected with the bevel gear A. A linkage shaft B is fixedly provided on the bevel gear B. The top end of the linkage shaft B is rotatably connected to the bottom end of the centripetal rod. A swivel A rotatably connected to the linkage shaft B is provided above the bevel gear B. A first sprocket A fixedly connected to the linkage shaft B is provided above the swivel A. A distance rod A is rotatably connected to the swivel A. A swivel C is rotatably provided at one end of the distance rod A away from the swivel A. A distance rod B arranged staggered with the distance rod A is rotatably connected to the swivel C. A linkage shaft C is rotatably provided inside the swivel C. Two ends of the linkage shaft C are respectively fixed with A second sprocket A and a first sprocket B are provided, and the second sprocket A and the first sprocket A are connected by chain A. A swivel X is rotatably provided at one end of the distance rod B away from the swivel C. The top end of the swivel X passes through the arc cavity and is rotatably connected to the bottom end of the adjusting ring. A linkage shaft X is rotatably connected inside the swivel X. The bottom end of the linkage shaft X passes through the bottom end of the swivel X and is fixedly provided with a second sprocket B. The second sprocket B and the first sprocket B are connected by chain B. The top end of the linkage shaft X passes through the gear groove and is fixedly provided with a transmission gear A. The transmission gear A is meshed with the internal tooth groove, and the transmission gear A is engaged with the engaging tooth block A.

[0014] Preferably, the rotating assembly also includes a transmission gear B and a fixed seat, the transmission gear B is meshed and connected with the outer gear ring B, the transmission gear B is rotatably connected to the bottom end of the mounting cavity through a gear shaft, the fixed seat is fixed on the mounting seat, a motor is fixed on the fixed seat, and the motor output shaft is fixedly connected to the gear shaft.

[0015] Preferably, the lifting mechanism is a screw lifting structure, and the clamping and positioning mechanism is a three-jaw chuck structure.

[0016] The beneficial effects of the present invention are: 1. The present invention, through the structural design of the cutting mechanism, enables a plurality of cutting parts to simultaneously cut the excess material at the gate parts around the metal casting, without the need to manually control the rotation of the metal casting, thereby improving the cutting efficiency of the metal casting gate. In addition, through the structural design of the variable diameter assembly, the rotating adjustment ring can enable a plurality of vertical plates to simultaneously drive a plurality of cutting parts to adjust their positions in the centripetal direction, which is suitable for gate cutting of various metal castings. The large power of the rotating assembly drives a plurality of small cutting assemblies, thereby ensuring the cutting force while keeping the overall volume of the device small.

[0017] 2. The present invention adopts the structural design of the clamping assembly, so that when the adjusting gear is rotated, the connecting shaft drives the elliptical block to rotate, and the ball block B moves relative to the threaded groove, so that the clamping tooth block B slides on the clamping slide groove B, and the clamping and disengagement of the clamping tooth block B and the clamping tooth groove are controlled. When the clamping tooth block B is clamped with the clamping tooth groove, the adjustment ring cannot rotate. At the same time, the rotation of the elliptical block makes the elliptical guide groove and the ball block A move relative to each other, so that the clamping tooth block A slides relative to the clamping slide groove A, which is convenient for adjustment, saves time and effort, and further solves the technical problem of low gate cutting efficiency of the current metal casting scrap cutting device.

[0018] 3. The present invention adopts the structural design of the adjusting gear, so that when the adjusting screw groove is rotated by the tool, the adjusting rod drives the worm to rotate, so that the worm ring drives the outer gear ring A to rotate, so that several adjusting gears rotate at the same time, thereby adjusting several clamping components at the same time, and the structure has self-locking ability. After the clamping components are adjusted, no additional fixation is required, the adjustment is convenient, time-saving and labor-saving, thereby further solving the technical problem of low gate cutting efficiency of the current metal casting scrap cutting device.

[0019] 4. The present invention adopts the structural design of the rotating component, the cutting component, the reducing component, the clamping component and the adjusting component, so that when the clamping tooth block B is clamped with the clamping tooth groove by rotating the adjusting screw groove through the tool, the clamping tooth block A slides relative to the clamping slide groove A and disengages from the transmission gear A, and the adjusting ring cannot rotate. At this time, the rotation of the output shaft of the externally controlled motor can drive a plurality of cutting blades to rotate, which is used to simultaneously cut the residual materials at the gate parts around the metal casting; when the adjusting screw groove is rotated by the tool to disengage the clamping tooth block B from the clamping tooth groove, the clamping tooth block A slides relative to the clamping slide groove A and clamps with the transmission gear A. At this time, the rotation of the output shaft of the externally controlled motor is used. Since the transmission gear A cannot rotate relative to the adjusting ring, a relatively fixed structure is formed. Therefore, the outer gear ring B drives the adjusting ring to rotate through the transmission gear A, which is used to control and adjust the positions of a plurality of cutting parts according to the type and size of the metal casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the disassembled structure of the lifting mechanism, cutting mechanism and clamping and positioning mechanism of the present invention; Figure 3 It is a schematic structural diagram of the cutting mechanism of the present invention; Figure 4 It is a schematic diagram of the split structure of the cutting mechanism of the present invention; Figure 5 Schematic diagram of the partial structure of the cutting mechanism of the present invention Figure 1 ; Figure 6 Schematic diagram of the partial structure of the cutting mechanism of the present invention Figure 2 ; Figure 7 It is a schematic diagram of the split structure of the fixing ring and the adjusting ring of the present invention; Figure 8 It is a structural schematic diagram of the clamping assembly and the adjusting assembly of the present invention; Fig. 9 It is a schematic diagram of the disassembled structure of the clamping assembly of the present invention; Fig.10 It is a schematic diagram of the structure of the cutting assembly and the rotating assembly of the present invention; Fig.11 It is a schematic structural diagram of the cutting assembly of the present invention; Fig.12 It is a schematic diagram of the disassembled structure of the transmission part of the present invention; Fig.13 is an overall schematic diagram of a metal casting to be cut; Fig.14 This is an overall schematic diagram of another metal casting to be cut.

[0021] Description of the numbers in the figure: 1. Cutting machine body; 2. Lifting mechanism; 3. Cutting mechanism; 4. Mounting seat; 5. Variable diameter assembly; 6. Cutting assembly; 7. Rotating assembly; 8. Clamping assembly; 9. Adjusting assembly; 10. Clamping and positioning mechanism; 41. mounting cavity; 42. round groove; 51. Fixed ring; 52. Centripetal slide; 53. Sliding block; 54. Centripetal rod; 55. Vertical plate; 56. Adjusting ring; 57. Inclined guide groove; 58. Inclined rod; 59. Movable column; 511, arc cavity; 512, snap-fit ​​tooth groove; 561, gear groove; 562, circular groove; 563, snap-fitting slide groove B; 564, rotating ring A; 565, snap-fitting slide groove A; 61. cutting part; 62. transmission part; 611, mounting unit; 612, cutting blade; 613, linkage shaft A; 614, bevel gear A; 621, bevel gear B; 622, linkage shaft B; 623, swivel A; 624, first sprocket A; 625, distance bar A; 626, swivel C; 627, distance bar B; 628, linkage shaft C; 629, second sprocket A; 630, chain A; 631, swivel X; 632, second sprocket B; 633, chain B; 634, transmission gear A; 635, linkage shaft X; 636, first sprocket B; 71. External gear ring B; 72. Internal gear groove; 73. Transmission gear B; 74. Gear shaft; 75. Fixed seat; 76. Motor; 81. Elliptical block; 82. Coupling shaft; 83. Adjusting gear; 84. Ball block B; 85. Snap-on tooth block B; 86. Thread groove; 87. Elliptical guide groove; 88. Snap-on tooth block A; 89. Ball block A; 91. Rotating ring B; 92. Volute ring; 93. Worm; 94. Adjusting rod; 95. Turntable; 96. Adjusting screw groove; 97. External gear ring A. DETAILED DESCRIPTION

[0022] like Figures 1 to 12 As shown, the present invention relates to a metal casting scrap cutting device, comprising a cutting body 1, a lifting mechanism 2, a cutting mechanism 3 and a clamping and positioning mechanism 10; The lifting mechanism 2 is arranged in the cutting chamber of the cutting machine body 1. The lifting mechanism 2 is a prior art screw lifting structure, which will not be described in detail here. The cutting mechanism 3 includes a mounting seat 4, a diameter reducing assembly 5 and a rotating assembly 7; The mounting seat 4 is fixedly mounted on the movable end of the lifting mechanism 2. A mounting cavity 41 is formed at the top of the mounting seat 4. A round through groove 42 is formed at the bottom of the mounting cavity 41. The mounting cavity 41 and the round through groove 42 are connected to form a through cavity. The reducer assembly 5 includes a fixed ring 51, which is fixed on the circular groove 42. The top of the fixed ring 51 is an annular equidistant structure with a plurality of centripetal grooves 52. A slider 53 is slidably connected to the centripetal groove 52. A centripetal rod 54 is fixed to the centripetal end of the slider 53. The centripetal end of the centripetal rod 54 passes through the slider 53 and extends into the fixed ring 51 and is fixed with a vertical plate 55. An adjusting ring 56 is rotatably connected to the fixed ring 51. A plurality of inclined guide grooves 57 are provided at the bottom of the adjusting ring 56 relative to the plurality of centripetal grooves 52. An inclined rod 58 is slidably connected to the inclined guide groove 57. The centripetal end of the inclined rod 58 is rotatably connected to the centripetal end of the centripetal rod 54 through a movable column 59. Through the above arrangement, the present invention enables the position of the rotation intersection of the centripetal end of the tilting rod 58 and the centripetal end of the centripetal rod 54 to change when the adjusting ring 56 rotates, so that the movable column 59 drives the centripetal rod 54 and the vertical plate 55 to slide along the centripetal slide groove 52 with the slider 53, so that several cutting parts 61 are changed at the same time, and the tilting rod 58 slides on the tilting guide groove 57.

[0023] A plurality of arc cavities 511 are provided on the fixing ring 51 at positions corresponding to the plurality of centripetal sliding grooves 52 , and the top ends of the arc cavities 511 are connected to arc-shaped engaging tooth grooves 512 .

[0024] The adjusting ring 56 is provided with a plurality of gear grooves 561 in an annular equidistant structure, the number of which is equal to the number of inclined guide grooves 57. A circular groove 562 is provided on one side of the gear groove 561. The circular groove 562 is connected with the gear groove 561 through a snap-in slide groove A565. A snap-in slide groove B563 is provided at the bottom end of the circular groove 562. A rotating ring A564 is fixed at the bottom end of the adjusting ring 56, and the rotating ring A564 is rotatably connected to the top end of the fixed ring 51.

[0025] The fixing ring 51 is connected with the adjusting ring 56 by a clamping assembly 8. The clamping assembly 8 includes an elliptical block 81 and a clamping tooth block A88. The elliptical block 81 is arranged in the circular groove 562. The elliptical block 81 and the circular groove 562 are rotatably connected by a connecting shaft 82. The top end of the connecting shaft 82 passes through the circular groove 562 and extends to the outside of the adjusting ring 56 and is fixed with an adjusting gear 83. The bottom end of the connecting shaft 82 passes through the clamping slide groove B563 and is fixed with a plurality of ball blocks B84 in an annular equidistant structure. The bottom end of the connecting shaft 82 is sleeved with a clamping tooth block B85. The tooth block B85 is slidably connected to the engaging groove B563, the engaging tooth block B85 is engaged with the engaging tooth groove 512, a plurality of thread grooves 86 are provided on the inner cavity of the engaging tooth block B85 relative to the positions of the plurality of ball blocks B84, the thread grooves 86 are movably connected to the ball block B84, wherein the rotation angle of the thread groove 86 is 90°, an elliptical guide groove 87 is provided on the surface of the elliptical block 81, the engaging tooth block A88 is slidably provided on the engaging groove A565, and the engaging tooth block A88 is movably connected to the elliptical guide groove 87 through the ball block A89. The present invention adopts the structural design of the clamping assembly 8, so that when the adjusting gear 83 is rotated, the connecting shaft 82 drives the elliptical block 81 to rotate, and the ball block B84 moves relative to the threaded groove 86, so that the clamping tooth block B85 slides on the clamping groove B563, and controls the clamping and disengagement of the clamping tooth block B85 and the clamping tooth groove 512. When the clamping tooth block B85 is clamped with the clamping tooth groove 512, the adjusting ring 56 cannot rotate. At the same time, the elliptical block 81 rotates so that the elliptical guide groove 87 and the ball block A89 move relative to each other, so that the clamping tooth block A88 slides relative to the clamping groove A565.

[0026] A plurality of adjusting gears 83 are meshedly connected through an adjusting assembly 9, and the adjusting assembly 9 includes a rotating ring B91, which is rotatably arranged at the top of the adjusting ring 56, a volute ring 92 is fixedly provided at the top of the rotating ring B91, an outer gear ring A97 is fixedly provided on the volute ring 92, and a plurality of adjusting gears 83 are meshedly connected with the outer gear ring A97, a worm 93 is meshedly connected on the volute ring 92, and adjusting rods 94 are fixedly provided at both ends of the worm 93, and the adjusting rods 94 are rotatably connected with the top of the adjusting ring 56 through a swivel seat 95, and one of the adjusting rods 94 passes through the swivel seat 95 at one end away from the worm 93 and is provided with an adjusting screw groove 96. The present invention adopts the structural design of the adjustment gear 83, so that when the adjustment screw groove 96 is rotated by a tool, the adjustment rod 94 drives the worm 93 to rotate, so that the worm ring 92 drives the outer gear ring A97 to rotate, so that several adjustment gears 83 rotate at the same time, thereby adjusting several clamping components 8 at the same time, and the structure has a self-locking ability. After the clamping component 8 is adjusted, no additional fixation is required, the adjustment is convenient, time-saving and labor-saving, thereby further solving the technical problem of low gate cutting efficiency of the current metal casting scrap cutting device.

[0027] The cutting assembly 6 includes a cutting portion 61 and a transmission portion 62 .

[0028] The cutting part 61 includes a mounting unit 611 and a linkage shaft A613. The mounting unit 611 is rotatably arranged at the bottom end of the centripetal side of the vertical plate 55. A cutting blade 612 is installed on the mounting unit 611. The linkage shaft A613 is rotatably arranged at the bottom end of the eccentric side of the vertical plate 55. The linkage shaft A613 is fixedly connected to the mounting unit 611. A bevel gear A614 is fixedly arranged on the linkage shaft A613. The mounting unit 611 of the present invention is a prior art for mounting the cutting blade 612, which will not be described in detail here. Through the above arrangement, the present invention enables the rotation of the bevel gear A614 to drive the linkage shaft A613, the mounting unit 611 and the cutting blade 612 to rotate. The transmission part 62 includes a bevel gear B621, which is meshed and connected with the bevel gear A614. A linkage shaft B622 is fixedly provided on the bevel gear B621. The top of the linkage shaft B622 is rotatably connected to the bottom end of the centripetal rod 54. A swivel A623 rotatably connected to the linkage shaft B622 is provided above the bevel gear B621. A first sprocket A624 fixedly connected to the linkage shaft B622 is provided above the swivel A623. A distance rod A625 is rotatably connected to the swivel A623. A swivel C626 is rotatably provided at one end of the distance rod A625 away from the swivel A623. A distance rod B627 arranged alternately with the distance rod A625 is rotatably connected to the swivel C626. ​​A linkage shaft C628 is rotatably provided in the swivel C626. ​​The linkage shaft C62 The second sprocket A629 and the first sprocket B636 are fixed at both ends respectively, and the second sprocket A629 is connected to the first sprocket A624 through a chain A630. A swivel X631 is rotatably provided at one end of the distance rod B627 away from the swivel C626. ​​The top end of the swivel X631 passes through the arc cavity 511 and is rotatably connected to the bottom end of the adjusting ring 56. A linkage shaft X635 is rotatably connected in the swivel X631. The bottom end of the linkage shaft X635 passes through the bottom end of the swivel X631 and is fixed with a second sprocket B632. The second sprocket B632 is connected to the first sprocket B636 through a chain B633. The top end of the linkage shaft X635 passes through the gear groove 561 and is fixed with a transmission gear A634. The transmission gear A634 is engaged with the engaging tooth block A88. Through the above-mentioned arrangement, the present invention enables the transmission gear A634 to rotate and drive the linkage shaft X635 and the second sprocket B632 to rotate, so that the chain B633 drives the first sprocket B636, the linkage shaft C628 and the second sprocket A629 to rotate, so that the chain A630 drives the first sprocket A624, the linkage shaft B622 and the bevel gear B621 to rotate, thereby causing the bevel gear A614 to rotate, and when the reducing assembly 5 changes diameter, the positions of the cutting portion 61 and the linkage shaft B622 are changed at the same time, so that the distance rod A625 and the distance rod B627 rotate relative to the rotating ring C626, and the two transmission structures are not affected, and when the transmission gear A634 is engaged with the engaging tooth block A88, the transmission gear A634 cannot rotate relative to the adjusting ring 56, forming a relatively fixed structure. The transmission portion 62 of the present invention can also use other transmission methods, which are not elaborated here.

[0029] The rotating assembly 7 includes an outer gear ring B71, a transmission gear B73 and a fixed seat 75. The outer gear ring B71 is rotatably arranged on the outer edge surface of the adjustment ring 56. An inner tooth groove 72 is provided on the inner edge surface of the outer gear ring B71 relative to the transmission gear A634. The transmission gear A634 is meshed and connected with the inner tooth groove 72. The transmission gear B73 is meshed and connected with the outer gear ring B71. The transmission gear B73 is rotatably connected with the bottom end of the mounting cavity 41 through a gear shaft 74. The fixed seat 75 is fixed on the mounting seat 4. A motor 76 is fixed on the fixed seat 75. The output shaft of the motor 76 is fixedly connected with the gear shaft 74. The present invention uses the structural design of the rotating assembly 7 to control the rotation of the output shaft of the motor 76 through an external control mechanism, and the gear shaft 74 drives the transmission gear B73 to rotate, so that the outer gear ring B71 rotates relative to the adjustment ring 56, and the inner tooth groove 72 drives a plurality of transmission gears A634 to rotate. The structure is compact and the device is small in size. Multiple cutting assemblies 6 are driven by one motor 76 so that the cutting force of the cutting assemblies 6 is sufficient.

[0030] A clamping and positioning mechanism 10 is provided below the cutting mechanism 3. The clamping and positioning mechanism 10 is a three-jaw chuck structure. The clamping and positioning mechanism 10 is used to Fig.13 The metal casting with multiple cavities in one mold is clamped, and the clamping and positioning mechanism 10 is a prior art three-jaw chuck structure, which will not be described in detail here.

[0031] Working principle: This embodiment provides a device for cutting off scraps of metal castings. When in use, firstly, the positions of the plurality of cutting parts 61 are adjusted according to the size of the cutting cavity surrounded by the required cutting parts of the plurality of metal castings on the same plane, so that the size of the cutting cavity formed by the plurality of cutting components 6 is changed; the screw groove 96 is adjusted by rotating the tool, so that the engaging tooth block B85 is disengaged from the engaging tooth groove 512, and the engaging tooth block A88 slides relative to the engaging slide groove A565 and engages with the transmission gear A634. At this time, the output shaft of the external control motor 76 rotates. Since the transmission gear A634 cannot rotate relative to the adjustment ring 56, a relatively fixed structure is formed, so the outer gear ring B71 drives the adjustment ring 56 to rotate through the transmission gear A634; The rotation intersection position of the centripetal end of the tilting rod 58 and the centripetal end of the centripetal rod 54 changes to an appropriate position, so that the movable column 59 drives the centripetal rod 54 and the vertical plate 55 to slide along the centripetal slide groove 52 along with the slider 53, so that the plurality of cutting parts 61 change at the same time, and the tilting rod 58 slides on the tilting guide groove 57. At this time, the distance rod A625 and the distance rod B627 rotate relative to the swivel C626, and the two transmission structures are not affected; Place the remaining spindle of the metal casting on the clamping and positioning mechanism 10 and clamp it in place, paying attention to the alignment of the gate position with the cutting blade 612; The output shaft of the motor 76 is controlled externally to rotate, so that the relative adjustment ring 56 rotates, and the internal tooth groove 72 rotates to drive the plurality of transmission gears A634 to rotate. The rotation of the transmission gear A634 can drive the linkage shaft X635 and the second sprocket B632 to rotate, so that the chain B633 drives the first sprocket B636, the linkage shaft C628 and the second sprocket A629 to rotate, so that the chain A630 drives the first sprocket A624, the linkage shaft B622 and the bevel gear B621 to rotate, thereby rotating the bevel gear A614, the linkage shaft A613, the mounting unit 611 and the cutting blade 612. The movable end of the lifting mechanism 2 is controlled to descend by the external control mechanism to drive the entire cutting mechanism 3 to descend, and the residual materials at the gate parts around the metal casting are cut simultaneously until the cutting is completed; If Fig.14 To cut the metal casting shown in the figure, the metal casting can be cut from the outside to the inside according to the above steps until the innermost metal casting is cut.

[0032] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A device for removing scraps from metal castings, characterized in that: It comprises a cutting machine body (1), a lifting mechanism (2) is arranged in a cutting chamber of the cutting machine body (1), a cutting mechanism (3) for a metal casting gate is arranged at a movable end of the lifting mechanism (2), and a clamping and positioning mechanism (10) is arranged below the cutting mechanism (3); The cutting mechanism (3) comprises a mounting seat (4), a diameter-changing component (5), a plurality of cutting components (6) and a rotating component (7); The mounting seat (4) is fixedly mounted on the movable end of the lifting mechanism (2), and a through cavity is provided on the mounting seat (4); The diameter-changing assembly (5) comprises a fixing ring (51), the fixing ring (51) being arranged on the through cavity, a plurality of vertical plates (55) being arranged in an annular structure with equal spacing below the fixing ring (51), and an adjusting ring (56) being rotatably connected to the fixing ring (51); The rotating assembly (7) comprises an outer gear ring B (71), the outer gear ring B (71) being rotatably arranged on the outer edge surface of the adjusting ring (56), and an inner gear groove (72) being arranged on the inner edge surface of the outer gear ring B (71); The cutting assembly (6) comprises a cutting part (61), a plurality of the cutting parts (61) are respectively arranged at the bottom ends of a plurality of the vertical plates (55), and the input ends of the plurality of the cutting parts (61) are connected to the inner tooth grooves (72) via a transmission part (62) with a variable diameter; The plurality of vertical plates (55) can move centrifugally or eccentrically at the same time, so that the size of the cutting cavity formed by the plurality of cutting assemblies (6) can be changed.

2. The metal casting scrap removal device according to claim 1, characterized in that: The top end of the mounting seat (4) is provided with a mounting cavity (41), the bottom end of the mounting cavity (41) is provided with a round through groove (42), and the through cavity is formed by the mounting cavity (41) and the round through groove (42) being connected.

3. The metal casting scrap removal device according to claim 2, characterized in that: The top of the fixed ring (51) is provided with a plurality of centripetal grooves (52) in an annular structure with equal spacing. A slider (53) is slidably connected to the centripetal groove (52). A centripetal rod (54) is fixedly provided at the centripetal end of the slider (53). The centripetal ends of the centripetal rods (54) respectively pass through the centripetal grooves (52) and extend into the fixed ring (51) and are respectively fixedly connected to the tops of the plurality of vertical plates (55). The fixed ring (51) is fixedly provided on the circular through groove (42). The fixed ring (51) is provided with a plurality of arc cavities (511) at positions corresponding to the plurality of centripetal grooves (52). The top of the arc cavity (511) is connected to a clamping tooth groove (512) in an arc structure.

4. The device for removing scraps from metal castings according to claim 3, characterized in that: A plurality of inclined guide grooves (57) are provided at the bottom end of the adjusting ring (56) relative to the plurality of centripetal slide grooves (52); an inclined rod (58) is slidably connected to the inclined guide groove (57); the centripetal end of the inclined rod (58) is rotatably connected to the centripetal end of the centripetal rod (54) via a movable column (59); a plurality of gear grooves (561) are provided in an annular equidistant structure on the adjusting ring (56) and the number of the gear grooves (561) is equal to the number of the plurality of inclined guide grooves (57); a circular groove (562) is provided on one side of the gear groove (561); the circular groove (562) is connected to the gear groove (561) via a clamping slide groove A (565); a clamping slide groove B (563) is provided at the bottom end of the circular groove (562); a rotating ring A (564) is fixedly provided at the bottom end of the adjusting ring (56); the rotating ring A (564) is rotatably connected to the top end of the fixed ring (51).

5. The device for removing scraps from metal castings according to claim 4, characterized in that: The fixing ring (51) and the adjusting ring (56) are connected by a clamping assembly (8). The clamping assembly (8) comprises an elliptical block (81) and a clamping tooth block A (88). The elliptical block (81) is arranged in the circular groove (562). The elliptical block (81) and the circular groove (562) are rotatably connected by a connecting shaft (82). The top end of the connecting shaft (82) passes through the circular groove (562) and extends to the outside of the adjusting ring (56) and is fixedly provided with an adjusting gear (83). The bottom end of the connecting shaft (82) passes through the clamping slide groove B (563) and is fixedly provided with a plurality of ball blocks B (84) in an annular equidistant structure. The bottom end of the connecting shaft (82) is sleeved with a clamping tooth block B (85). The engaging tooth block B (85) is slidably connected to the engaging groove B (563), the engaging tooth block B (85) is engaged with the engaging tooth groove (512), a plurality of thread grooves (86) are provided on the inner cavity of the engaging tooth block B (85) at positions corresponding to the plurality of ball blocks B (84), the thread grooves (86) are movably connected to the ball blocks B (84), wherein the rotation angle of the thread grooves (86) is 90°, an elliptical guide groove (87) is provided on the surface of the elliptical block (81), the engaging tooth block A (88) is slidably arranged on the engaging groove A (565), and the engaging tooth block A (88) is movably connected to the elliptical guide groove (87) via the ball block A (89).

6. The device for removing scraps from metal castings according to claim 5, characterized in that: A plurality of the adjusting gears (83) are meshedly connected via an adjusting assembly (9). The adjusting assembly (9) comprises a rotating ring B (91). The rotating ring B (91) is rotatably arranged at the top of the adjusting ring (56). A worm ring (92) is fixedly arranged at the top of the rotating ring B (91). An external toothed ring A (97) is fixedly arranged on the worm ring (92). A plurality of the adjusting gears (83) are meshedly connected to the external toothed ring A (97). A worm (93) is meshedly connected to the worm ring (92). Adjusting rods (94) are fixedly arranged at both ends of the worm (93). The adjusting rods (94) are rotatably connected to the top of the adjusting ring (56) via a rotating seat (95). One end of one of the adjusting rods (94) away from the worm (93) passes through the rotating seat (95) and is provided with an adjusting screw groove (96).

7. The device for removing scraps from metal castings according to claim 6, characterized in that: The cutting portion (61) comprises a mounting unit (611) and a linkage shaft A (613); the mounting unit (611) is rotatably disposed at the bottom end of the centripetal side of the vertical plate (55); a cutting blade (612) is mounted on the mounting unit (611); the linkage shaft A (613) is rotatably disposed at the bottom end of the eccentric side of the vertical plate (55); the linkage shaft A (613) is fixedly connected to the mounting unit (611); and a bevel gear A (614) is fixedly disposed on the linkage shaft A (613).

8. The device for removing scraps from metal castings according to claim 7, characterized in that: The transmission part (62) comprises a bevel gear B (621), the bevel gear B (621) is meshedly connected with the bevel gear A (614), a linkage shaft B (622) is fixedly provided on the bevel gear B (621), the top end of the linkage shaft B (622) is rotatably connected with the bottom end of the centripetal rod (54), a rotating ring A (623) rotatably connected to the linkage shaft B (622) is provided above the bevel gear B (621), and a rotating ring A (623) rotatably connected to the linkage shaft B (622) is provided above the rotating ring A (623). ) is fixedly connected to a first sprocket A (624), the swivel ring A (623) is rotatably connected to a distance rod A (625), one end of the distance rod A (625) away from the swivel ring A (623) is rotatably provided with a swivel ring C (626), the swivel ring C (626) is rotatably connected to a distance rod B (627) arranged alternately with the distance rod A (625), a linkage shaft C (628) is rotatably provided in the swivel ring C (626), and second chain shafts are fixedly provided at both ends of the linkage shaft C (628) The first sprocket A (629) and the first sprocket B (636) are connected to each other by a chain A (630). The second sprocket A (629) and the first sprocket A (624) are connected by a chain A (630). The end of the distance rod B (627) away from the rotating ring C (626) is rotatably provided with a rotating ring X (631). The top end of the rotating ring X (631) passes through the arc cavity (511) and is rotatably connected to the bottom end of the adjusting ring (56). A linkage shaft X (635) is rotatably connected inside the rotating ring X (631). The linkage shaft X The bottom end of the shaft (635) passes through the bottom end of the rotating ring X (631) and is fixedly provided with a second sprocket B (632); the second sprocket B (632) and the first sprocket B (636) are connected to each other by a chain B (633); the top end of the linkage shaft X (635) passes through the gear groove (561) and is fixedly provided with a transmission gear A (634); the transmission gear A (634) is meshedly connected with the internal tooth groove (72); and the transmission gear A (634) is engaged with the engaging tooth block A (88).

9. The device for removing scraps from metal castings according to claim 8, characterized in that: The rotating assembly (7) further comprises a transmission gear B (73) and a fixed seat (75), wherein the transmission gear B (73) is meshingly connected with the outer gear ring B (71), the transmission gear B (73) is rotationally connected with the bottom end of the mounting cavity (41) via a gear shaft (74), the fixed seat (75) is fixedly mounted on the mounting seat (4), a motor (76) is fixedly mounted on the fixed seat (75), and an output shaft of the motor (76) is fixedly connected to the gear shaft (74).

10. The device for removing scraps from metal castings according to claim 9, characterized in that: The lifting mechanism (2) is a screw lifting structure, and the clamping and positioning mechanism (10) is a three-jaw chuck structure.

Images