A post-processing device for silica sol investment casting of high-precision automotive castings

Abstract

This invention relates to the field of casting polishing technology, specifically to a high-precision automotive casting silica sol investment casting post-processing device, comprising a housing, a shot blasting unit, and closed doors. The shot blasting unit is installed on the housing, and two symmetrical closed doors are hinged to the front surface of the housing. A conveying mechanism for transporting the casting into the housing is provided on the upper surface of the housing. The processing device also includes a hoisting mechanism for loading the casting as a whole. The hoisting mechanism is mounted on the conveying mechanism. The conveying mechanism drives the hoisting rod to make the casting revolve inside the housing. Simultaneously, a support mechanism allows the casting to rotate on its own axis during the revolution. During the revolution, the casting is intermittently tilted upwards, enabling all-round polishing of the casting without dead angles, improving polishing efficiency, and resulting in better polishing effect.

Description

Technical Field

[0001] This invention relates to the field of casting polishing technology, specifically to a post-processing device for high-precision automotive castings using silica sol investment casting. Background Technology

[0002] High-precision automotive castings are indispensable components in automobile manufacturing. They are widely used in various automotive systems, such as engines, transmissions, and shock absorbers, playing a crucial role in the performance and safety of automobiles. High-precision automotive castings are typically produced using the silica sol investment casting method. Silica sol investment casting, also known as lost-wax casting, mainly includes wax pressing, wax repair, tree assembly, slurry application, wax melting, pouring molten metal, and post-processing steps.

[0003] In the post-processing of cast automotive parts, the finished automotive parts are usually obtained through a series of processes such as shelling, cutting, grinding, polishing and inspection. When polishing automotive castings, shot blasting equipment is usually used for polishing.

[0004] Because automotive castings have irregular structures (such as...) Figure 2 As shown, when polishing, both the inner and outer surfaces of the automotive casting need to be fully polished. Existing polishing methods for such irregular castings usually involve rotating the casting inside a shot blasting machine. In this way, the tilt angle of some irregular positions deviates from the shot blasting direction of the machine, which can easily lead to incomplete polishing of the inner surface of some irregular positions. Since the automotive casting needs to be clamped when placed inside the shot blasting machine, dead corners may appear in the clamping position during the polishing process, resulting in the clamping position not being fully polished. Summary of the Invention

[0005] Therefore, the present invention provides a post-processing device for silica sol investment casting of high-precision automotive castings, which solves the above-mentioned technical problems.

[0006] The present invention provides a post-processing device for high-precision automotive casting silica sol investment casting, comprising a box body, a shot blasting unit, and a closed door. The shot blasting unit is provided on the box body, and two left and right symmetrical closed doors are hinged to the front surface of the box body. The upper surface of the box body is provided with a conveying mechanism for conveying the casting into the box body. The post-processing device also includes a hoisting mechanism for loading the casting as a whole, and the hoisting mechanism is set on the conveying mechanism.

[0007] The post-processing device also includes a support mechanism for placing a single casting. The support mechanism is arranged in a circular array on the hoisting mechanism, and the hoisting mechanism is provided with an adjustment mechanism that corresponds one-to-one with the multiple support mechanisms.

[0008] The support mechanism includes a connecting shaft rotatably connected to the hoisting mechanism. A support member is provided on the circumferential surface of the connecting shaft. Multiple sets of driving members are provided on the support member. Each set of driving members consists of two driving members arranged in a centrally symmetrical manner. Limiting members are provided at the positions of the driving members on the circumferential surface of the connecting shaft. A transmission gear is fixedly connected to the bottom end of the connecting shaft.

[0009] The support includes fixed seats that are fixedly connected to the circumferential surface of the connecting shaft and are evenly distributed in the vertical direction. Multiple sets of driving components correspond one-to-one with multiple fixed seats. Two placement rings symmetrically arranged with the connecting shaft as the reference are hinged to the fixed seats by torsion springs. An adjustment ring is rotatably connected to the outer circumferential surface of the placement ring. Multiple support plates distributed in a circular array are fixedly connected to the lower surface of the adjustment ring. A linkage vertical plate is hinged to the outer circumferential surface of multiple placement rings located on the same vertical line.

[0010] According to an embodiment of the present invention, the adjusting ring and the placement ring are in friction fit, and the adjusting ring and the placement ring remain relatively stationary when no external force is applied. The outer circumferential surface of the adjusting ring is provided with uniformly distributed grooves, and a limiting plate is provided on the fixing seat below the placement ring to keep the placement ring horizontal.

[0011] According to an embodiment of the present invention, the conveying mechanism includes a fixed frame fixedly connected to the upper surface of the box. Two left-right symmetrical sliding rails are fixedly connected to the inner side of the top of the fixed frame. Two electric sliders distributed front and rear are slidably connected on the sliding rails. The two left-right electric sliders are fixedly connected to each other by a connecting cross brace. A drive motor is fixedly installed on the upper surface of the two connecting cross braces. A hook is fixedly connected to the output shaft of the drive motor.

[0012] According to an embodiment of the present invention, the hoisting mechanism includes a lifting ring mounted on a conveying mechanism and a lifting rod fixedly connected to the bottom end of the lifting ring. Two symmetrical cross-shaped connecting plates are fixedly connected to the circumferential surface of the lifting rod. A rectangular base plate is rotatably connected to the bottom end of the lifting rod. The upper surface of the rectangular base plate is provided with a plurality of evenly distributed through holes to facilitate the downward fall and recovery of the shot. An internal gear ring is fixedly connected to the upper surface of the rectangular base plate. A plurality of adjusting arc plates arranged in a circular array are fixedly connected to the outer circumferential surface of the internal gear ring.

[0013] According to an embodiment of the present invention, the internal gear ring is coaxial with the lifting rod, the internal gear ring meshes with the transmission gear, and the rectangular base plate has bevels on both the left and right sides of its rear end to allow the rectangular base plate to smoothly enter the housing. The upper surface of the adjusting arc plate is gradually inclined upward along the rotation direction, and the inclined surface of the adjusting arc plate slides in cooperation with the lower surface of the bottom adjusting ring. A plane is provided a distance away after the highest point of the inclination of the upper surface of the adjusting arc plate.

[0014] According to an embodiment of the present invention, the adjustment mechanism includes a support plate fixedly connected to the upper surface of a rectangular base plate. A plurality of mounting seats evenly distributed in the vertical direction are fixedly connected to the side of the support plate near the center of the hanger. An adjustment block is elastically hinged to the mounting seat. The end of the adjustment block near the center of the hanger is set at a right angle and cooperates with the groove on the adjustment ring. The elastic force between the adjustment block and the mounting seat is greater than the static friction force between the casting and the support plate.

[0015] According to an embodiment of the present invention, the driving component includes a transmission box fixedly connected to a connecting shaft, a transmission shaft rotatably connected to the upper surface of the transmission box, a linkage shaft rotatably connected to the side of the transmission box near the placement ring, and a linkage gear fixedly connected to the top end of the transmission shaft.

[0016] According to an embodiment of the present invention, the bottom end of the drive shaft extends into the interior of the transmission box, and the end of the linkage shaft away from the placement ring extends into the interior of the transmission box and is connected to the bottom end of the drive shaft via a bevel gear transmission.

[0017] According to an embodiment of the present invention, the limiting member includes two driven gears that are rotatably connected to the circumferential surface of the connecting shaft and are distributed vertically at positions corresponding to the linkage gears. The driven gears mesh with their corresponding linkage gears. Each driven gear has a bearing seat fixedly connected to its upper surface, and a limiting pressure plate is elastically hinged to the bearing seat.

[0018] According to an embodiment of the present invention, the bearing seat is sleeved on the circumferential surface of the connecting shaft and rotatably connected to the connecting shaft. Under normal conditions, the limiting pressure plate and the placement ring are arranged parallel to each other and offset from the top of their respective placement rings.

[0019] The technical solution of this invention is as follows: 1. The casting is made to revolve inside the box by driving the lifting rod through the conveying mechanism. At the same time, the supporting mechanism makes the casting rotate synchronously during the revolution. During the revolution, the casting is intermittently tilted upward, which can realize all-round polishing of the casting without dead angles, improve the polishing efficiency of the casting, and make the polishing effect of the casting better.

[0020] 2. By adjusting the mechanism and cooperating with the support components, the support position at the bottom of the casting can be switched intermittently to avoid polishing dead angles. The support position of the casting can be switched during the polishing process to avoid the situation where the support position on the casting is not polished properly, thereby further improving the polishing efficiency of the casting.

[0021] 3. By setting up driving components and limiting components, the casting can be secondary-limited when it is being polished at an angle, so as to avoid the impact force on the casting during the polishing process in an inclined state causing the placement position of the casting to shift, thus ensuring the normal progress of the casting polishing work. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the post-processing device for silica sol investment casting of high-precision automotive castings provided by the present invention.

[0024] Figure 2 This is a three-dimensional structural diagram of the automotive casting provided by the present invention.

[0025] Figure 3 This is a three-dimensional structural diagram of the conveying mechanism provided by the present invention.

[0026] Figure 4 This is a three-dimensional structural diagram of the hoisting mechanism provided by the present invention.

[0027] Figure 5 This is a three-dimensional structural diagram of the rectangular base plate and the box body provided by the present invention.

[0028] Figure 6 This is a three-dimensional structural diagram of the support mechanism provided by the present invention.

[0029] Figure 7 This invention provides Figure 6 Enlarged view of section A.

[0030] Figure 8 This invention provides Figure 6 Enlarged view of section B.

[0031] Figure 9 This is a cross-sectional schematic diagram of the transmission box provided by the present invention.

[0032] Figure 10 This is a three-dimensional structural schematic diagram of the adjustment mechanism provided by the present invention.

[0033] Figure 11 This invention provides Figure 10 Enlarged view of section C.

[0034] Reference numerals: 1. Box body; 2. Shot blasting unit; 3. Enclosed door; 4. Conveying mechanism; 5. Lifting mechanism; 6. Adjusting mechanism; 7. Supporting mechanism; 41. Fixed frame; 42. Sliding rail; 43. Electric slider; 44. Drive motor; 45. Hook; 51. Lifting rod; 52. Cross-shaped connecting plate; 53. Rectangular base plate; 54. Internal gear ring; 55. Adjusting arc plate; 61. Mounting seat; 62. Adjusting block; 63. Supporting upright plate; 71. Driving component; 72. Connecting shaft; 73. Support component; 74. Limiting component; 75. Transmission gear; 711. Linkage gear; 712. Transmission shaft; 713. Transmission box; 714. Linkage shaft; 731. Fixed seat; 732. Placement ring; 733. Support plate; 734. Adjusting ring; 735. Linkage upright plate; 741. Driven gear; 742. Bearing seat; 743. Limiting pressure plate. Detailed Implementation

[0035] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] like Figure 1 and Figure 2 As shown, a high-precision automotive casting silica sol investment casting post-processing device includes a housing 1, a shot blasting unit 2, and closed doors 3. The housing 1 is equipped with the shot blasting unit 2. Two symmetrical closed doors 3 are hinged to the front surface of the housing 1. A conveying mechanism 4 for transporting the casting into the housing 1 is provided on the upper surface of the housing 1. The post-processing device also includes a lifting mechanism 5 for loading the casting as a whole, which is mounted on the conveying mechanism 4. The post-processing device further includes multiple support mechanisms 7 for placing individual castings, arranged in a circular array on the lifting mechanism 5. The lifting mechanism 5 is equipped with adjustment mechanisms 6 corresponding one-to-one with each of the multiple support mechanisms 7. It should be noted that the housing 1, shot blasting unit 2... 、 The closed door 3, the conveying mechanism 4, and the hoisting mechanism 5 are existing technologies.

[0037] like Figure 1 and Figure 3As shown, the conveying mechanism 4 includes a fixed frame 41 fixedly connected to the upper surface of the housing 1. Two left-right symmetrical sliding rails 42 are fixedly connected to the inner side of the top of the fixed frame 41. Two front-back electric sliders 43 are slidably connected to the sliding rails 42 along the front-back direction. The two left-right electric sliders 43 are fixedly connected to each other by connecting cross braces. The upper surfaces of the two front-back connecting cross braces are fixedly mounted with a drive motor 44. The bottom end of the output shaft of the drive motor 44 is fixedly connected with a hook 45.

[0038] like Figure 1 , Figure 4 and Figure 5 As shown, the hoisting mechanism 5 includes a lifting ring mounted on the bottom of the hook 45 and a lifting rod 51 fixedly connected to the bottom of the lifting ring. Two symmetrical cross-shaped connecting plates 52 are fixedly connected to the circumferential surface of the lifting rod 51. A rectangular base plate 53 is rotatably connected to the bottom of the lifting rod 51. The upper surface of the rectangular base plate 53 has multiple evenly distributed through holes to facilitate the downward fall and recovery of the shot. An internal gear ring 54 is fixedly connected to the upper surface of the rectangular base plate 53. The internal gear ring 54 is coaxial with the lifting rod 51. Multiple adjusting arc plates 55 arranged in a circular array are fixedly connected to the outer circumferential surface of the internal gear ring 54. The upper surface of the adjusting arc plate 55 is gradually inclined upward along the rotation direction. The left and right sides of the rear end of the rectangular base plate 53 are provided with bevels to allow the rectangular base plate 53 to smoothly enter the interior of the housing 1. The upper surface of the adjusting arc plate 55 is a plane with a distance after the highest point of the inclination of the upper surface of the adjusting arc plate 55.

[0039] like Figure 1 , Figure 4 and Figure 6 As shown, the support mechanism 7 includes a connecting shaft 72 rotatably connected to four end positions between the opposing surfaces of two cross-shaped connecting plates 52. A support member 73 is provided on the circumferential surface of the connecting shaft 72. Multiple sets of driving members 71 are provided on the support member 73. Each set of driving members 71 has two driving members 71 arranged in a centrally symmetrical manner. Limiting members 74 are provided at the positions of the driving members 71 on the circumferential surface of the connecting shaft 72. The bottom end of the connecting shaft 72 extends through to the lower surface of the cross-shaped connecting plate 52 below and is fixedly connected to a transmission gear 75. The transmission gear 75 meshes with the internal gear ring 54.

[0040] like Figure 6 , Figure 7 and Figure 8As shown, the support member 73 includes fixed seats 731 that are fixedly connected to the circumferential surface of the connecting shaft 72 and are evenly distributed in the vertical direction. Multiple sets of driving members 71 correspond one-to-one with multiple fixed seats 731. Two placement rings 732, which are symmetrically arranged with the connecting shaft 72 as the reference, are hinged to the fixed seats 731 by torsion springs. An adjusting ring 734 is rotatably connected to the outer circumferential surface of the placement rings 732. The inclined surface of the adjusting arc plate 55 slides in cooperation with the lower surface of the bottommost adjusting ring 734. The lower surface of the adjusting ring 734 is fixedly connected to... There are multiple support plates 733 arranged in a circular array. Multiple placement rings 732 located on the same vertical line are hinged together on their outer circumferential surfaces. The adjusting ring 734 and the placement ring 732 are in friction fit. When there is no external force, the adjusting ring 734 and the placement ring 732 remain relatively stationary. The outer circumferential surface of the adjusting ring 734 is provided with evenly distributed grooves. A limiting plate (not shown in the figure) is provided on the fixing base 731 and below the placement ring 732 to keep the placement ring 732 horizontal.

[0041] In practical use, first, the casting to be polished (such as...) Figure 2 As shown, the castings are placed one by one inside the placement ring 732. The support plate 733 supports the castings inside the placement ring 732. After all the castings are placed, the external forklift equipment picks up the bottom of the rectangular base plate 53 and hangs the lifting rod 51 on the hook 45. At this time, the electric slider 43 moves backward on the sliding rail 42 to send the lifting rod 51 into the interior of the box 1. At the same time, the rectangular base plate 53 is engaged with the bottom of the interior of the box 1. With the bevel setting at the rear end of the rectangular base plate 53, the rectangular base plate 53 can enter the interior of the box 1 more smoothly. Then the closing door 3 is closed.

[0042] At this time, shot blasting unit 2 starts working to polish the casting on the placement ring 732. At the same time, drive motor 44 starts to rotate. Since the rectangular base plate 53 is clamped inside the box 1, the rotation of drive motor 44 drives the lifting rod 51 to rotate on the rectangular base plate 53 through the hook 45. At the same time, the cross-shaped connecting plate 52 drives multiple connecting shafts 72 to rotate synchronously. The connecting shaft 72 drives the placement ring 732 to rotate through the fixed seat 731 on it, so that the casting on the placement ring 732 revolves around the lifting rod 51. At the same time, when the lifting rod 51 drives the connecting shaft 72 to rotate, the transmission gear 75 at the bottom of the connecting shaft 72 always meshes with the internal gear ring 54, so that the connecting shaft 72 rotates synchronously with the lifting rod 51 as it revolves. This allows the casting to rotate synchronously while revolving, so that all parts of the protruding curved surface of the casting can be polished multiple times, improving the polishing efficiency of the casting.

[0043] As the placement ring 732 revolves with the lifting rod 51, the adjusting ring 734 rotates synchronously with it. When passing the adjusting arc plate 55, it first passes the lowest end of the inclined surface of the adjusting arc plate 55. As the lifting rod 51 gradually rotates, the lower surface of the adjusting ring 734 slides from low to high along the inclined surface of the adjusting arc plate 55, simultaneously pushing the placement ring 732 to deflect on the fixed seat 731. This changes the casting inside the placement ring 732 from a horizontal state to an inclined state. When the adjusting ring 734 slides to the highest point of the inclined surface of the adjusting arc plate 55, the lower surface of the adjusting ring 734 slides along the plane of the upper surface of the adjusting arc plate 55, keeping the casting in an inclined state for a certain distance, so as to fully polish the inner surface of the casting.

[0044] When the adjusting ring 734 moves away from the adjusting arc plate 55, the casting is restored to a horizontal state by the combined action of its own weight and the elastic force of the torsion spring between the placement ring 732 and the fixed seat 731, in conjunction with the limiting plate on the fixed seat 731. As the lifting rod 51 continues to rotate, the placement ring 732 can be intermittently tilted by multiple adjusting arc plates 55, so that the inner surface of the casting can be fully polished. By setting the linkage vertical plate 735, the placement rings 732 that are in the same vertical line can tilt synchronously.

[0045] It should be noted that during the upward flipping process of the bottom placement ring 732, the shot blasting may be blocked by the adjusting arc plate 55. Therefore, the bottom placement ring 732 may not contain any castings.

[0046] like Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the drive unit 71 includes a transmission box 713 fixedly connected to the circumferential surface of the connecting shaft 72. A transmission shaft 712 is rotatably connected to the upper surface of the transmission box 713. A linkage shaft 714 is rotatably connected to the side of the transmission box 713 near the placement ring 732. A linkage gear 711 is fixedly connected to the top end of the transmission shaft 712. The bottom end of the transmission shaft 712 extends into the interior of the transmission box 713. The end of the linkage shaft 714 away from the placement ring 732 extends into the interior of the transmission box 713 and is connected to the bottom end of the transmission shaft 712 through a bevel gear. It should be noted that the two transmission shafts 712 in a set of drive units 71 have different heights, so the linkage gears 711 are also distributed vertically.

[0047] like Figure 6 and Figure 7As shown, the limiting member 74 includes two driven gears 741 that are rotatably connected to the circumferential surface of the connecting shaft 72 and are located at positions corresponding to the linkage gear 711. The driven gears 741 mesh with their corresponding linkage gears 711. Each driven gear 741 has a bearing seat 742 fixedly connected to its upper surface. A limiting pressure plate 743 is elastically hinged to the bearing seat 742. The bearing seat 742 is sleeved on the circumferential surface of the connecting shaft 72 and rotatably connected to the connecting shaft 72. Under normal conditions, the limiting pressure plate 743 and the placement ring 732 are arranged parallel to each other and offset from the top of their corresponding placement ring 732.

[0048] In practical use, when the adjusting ring 734 passes the adjusting arc plate 55, as the adjusting ring 734 drives the placement ring 732 from a horizontal state to an inclined state, the placement ring 732 simultaneously drives the transmission shaft 712 to rotate via the linkage shaft 714. The transmission shaft 712 drives the driven gear 741 to rotate synchronously on the connecting shaft 72 via the linkage gear 711. At this time, the driven gear 741 drives the bearing seat 742 to rotate, moving the limiting pressure plate 743 above the placement ring 732. When the placement ring 732 becomes inclined, the limiting pressure plate 743 controls the interior of the placement ring 732. The casting generates downward pressure, which, combined with the elastic force between the limiting pressure plate 743 and the bearing seat 742, allows the casting to remain stable inside the placement ring 732 when it is tilted and subjected to the impact force of the shot blasting unit 2. When the placement ring 732 returns to the horizontal state, the placement ring 732 drives the transmission shaft 712 to reverse through the linkage shaft 714, and the linkage gear 711 drives the driven gear 741 to reverse, so that the bearing seat 742 returns to its original position and the limiting pressure plate 743 is removed from above the placement ring 732, so as to avoid the limiting pressure plate 743 affecting the polishing of the casting.

[0049] like Figure 1 , Figure 10 and Figure 11 As shown, the adjustment mechanism 6 includes a support plate 63 fixedly connected to the upper surface of the rectangular base plate 53. A plurality of mounting seats 61 evenly distributed in the vertical direction are fixedly connected to the side of the support plate 63 near the center of the hanger 51. An adjustment block 62 is elastically hinged to the mounting seat 61. The end of the adjustment block 62 near the center of the hanger 51 is set at a right angle and cooperates with the groove on the adjustment ring 734. The elastic force between the adjustment block 62 and the mounting seat 61 is greater than the static friction force between the casting and the support plate 733.

[0050] In practical use, as the placement ring 732 revolves with the boom 51, the adjusting ring 734 rotates synchronously with it. When the adjusting ring 734 passes the adjusting block 62, the end of the adjusting ring 734 furthest from the axis of the boom 51 contacts the adjusting block 62, engaging with the groove on the adjusting ring 734. At this time, the adjusting block 62 generates resistance to the adjusting ring 734. Because the elastic force between the adjusting block 62 and the mounting base 61 is greater than the static friction between the casting and the support plate 733, the adjusting ring 734 rotates on the placement ring 732, simultaneously driving the support plate... 733 rotates synchronously, switching the contact position between the support plate 733 and the bottom of the casting to avoid polishing dead angles. As the adjusting ring 734 continues to rotate, the adjusting ring 734 separates from the adjusting block 62. After the adjusting ring 734 is no longer obstructed, it remains stationary on the placement ring 732. At this point, the position of the support plate 733 supporting the casting is changed once. With the setting of multiple adjusting mechanisms 6, the adjusting ring 734 can be intermittently moved during the revolution of the placement ring 732, driving the support plate 733 to change the support position, ensuring that there are no polishing dead angles, which would result in inadequate polishing of the casting.

[0051] After a certain period of continuous polishing, the polishing work of the casting is completed. The closed door 3 is opened, and the electric slider 43 slides forward on the sliding rail 42 to pull the casting out from the inside of the box 1. Then, the lifting rod 51 is removed from the hook 45 by the external forklift equipment. The above steps are repeated to polish the next batch of castings.

[0052] Working principle: In practical use, the castings to be polished are first placed one by one onto the support 73. Then, an external forklift picks up the bottom of the rectangular base plate 53 and hangs the lifting rod 51 on the hook 45. At this time, the electric slider 43 moves backward on the sliding rail 42, sending the lifting rod 51 into the interior of the housing 1. Simultaneously, the rectangular base plate 53 is engaged inside the housing 1. Then, the sealing door 3 is closed, and the shot blasting unit 2 begins to polish the castings on the support 73. The drive motor 44 starts to rotate, driving the lifting rod 51 to rotate synchronously. At this time, the lifting rod 51 drives the connecting shaft 72 to rotate through the cross-shaped connecting plate 52, causing the casting to revolve inside the housing 1. Meanwhile, the transmission gear 75, in conjunction with the internal gear ring 54, drives the connecting shaft 72 to rotate on the cross-shaped connecting plate 52 during the revolution of the casting, causing the casting to rotate. When the lifting rod 51 drives the connecting shaft 72 to rotate, causing the support 73 to pass through the adjusting arc plate 55, the casting can be tilted upwards to polish the inner surface of the casting. After continuous polishing for a certain period of time, the polishing work of the casting is completed. The closed door 3 is opened, and the electric slider 43 slides forward on the sliding track 42 to pull the casting out from the inside of the box 1. Then, the lifting rod 51 is removed from the hook 45 by the external forklift equipment, and the above steps are repeated for the polishing work of the next batch of castings.

[0053] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0054] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A post-processing device for high-precision automotive castings via silica sol investment casting, comprising a housing (1), a shot blasting unit (2), and a closed door (3), wherein the housing (1) is provided with the shot blasting unit (2), and two symmetrical closed doors (3) are hinged to the front surface of the housing (1), and a conveying mechanism (4) for conveying the castings into the housing (1) is provided on the upper surface of the housing (1); characterized in that: It also includes a hoisting mechanism (5) for loading the casting as a whole, the hoisting mechanism (5) being mounted on the conveying mechanism (4); A support mechanism (7) for placing a single casting is provided. The number of support mechanisms (7) is multiple and arranged in a circular array on the hoisting mechanism (5). The hoisting mechanism (5) is provided with an adjustment mechanism (6) corresponding to each of the multiple support mechanisms (7). The support mechanism (7) includes a connecting shaft (72) rotatably connected to the hoisting mechanism (5). A support member (73) is provided on the circumferential surface of the connecting shaft (72). Multiple sets of driving members (71) are provided on the support member (73). The number of driving members (71) in each set of driving members (71) is two and they are arranged in a centrally symmetrical manner. Limiting members (74) are provided at the positions corresponding to the driving members (71) on the circumferential surface of the connecting shaft (72). A transmission gear (75) is fixedly connected to the bottom end of the connecting shaft (72). The support member (73) includes a fixed seat (731) fixedly connected to the circumferential surface of the connecting shaft (72) and evenly distributed in the vertical direction. Multiple sets of the driving members (71) correspond one-to-one with multiple fixed seats (731). Two placement rings (732) are symmetrically arranged with the connecting shaft (72) as the reference, and two placement rings (732) are hinged to the fixed seat (731) by a torsion spring. An adjustment ring (734) is rotatably connected to the outer circumferential surface of the placement ring (732). Multiple support plates (733) arranged in a circular array are fixedly connected to the lower surface of the adjustment ring (734). A linkage plate (735) is hinged to the outer circumferential surface of multiple placement rings (732) located on the same vertical line.

2. The post-processing device for silica sol investment casting of high-precision automotive castings according to claim 1, characterized in that: The adjusting ring (734) and the placement ring (732) are in friction fit. When no external force is applied, the adjusting ring (734) and the placement ring (732) remain relatively stationary. The outer circumferential surface of the adjusting ring (734) is provided with uniformly distributed grooves. The fixing seat (731) is provided with a limiting plate below the placement ring (732) to keep the placement ring (732) horizontal.

3. The post-processing device for silica sol investment casting of high-precision automotive castings according to claim 1, characterized in that: The conveying mechanism (4) includes a fixed frame (41) fixedly connected to the upper surface of the box (1). Two left-right symmetrical sliding rails (42) are fixedly connected to the inner side of the top of the fixed frame (41). Two electric sliders (43) distributed front and back are slidably connected on the sliding rails (42). The two electric sliders (43) distributed left and right are fixedly connected to each other by connecting cross braces. A drive motor (44) is fixedly installed on the upper surface of the two connecting cross braces. A hook (45) is fixedly connected to the output shaft of the drive motor (44).

4. The post-processing device for silica sol investment casting of high-precision automotive castings according to claim 1, characterized in that: The hoisting mechanism (5) includes a lifting ring mounted on the conveying mechanism (4) and a lifting rod (51) fixedly connected to the bottom end of the lifting ring. Two symmetrical cross-shaped connecting plates (52) are fixedly connected to the circumferential surface of the lifting rod (51). A rectangular base plate (53) is rotatably connected to the bottom end of the lifting rod (51). The upper surface of the rectangular base plate (53) is provided with multiple evenly distributed through holes to facilitate the downward fall and recovery of the shot. An internal gear ring (54) is fixedly connected to the upper surface of the rectangular base plate (53). Multiple adjusting arc plates (55) arranged in a circular array are fixedly connected to the outer circumferential surface of the internal gear ring (54).

5. The post-processing device for silica sol investment casting of high-precision automotive castings according to claim 4, characterized in that: The internal gear ring (54) is coaxial with the rod (51), and the internal gear ring (54) meshes with the transmission gear (75). The rectangular base plate (53) has bevels on both the left and right sides of its rear end, which allow the rectangular base plate (53) to smoothly enter the box (1). The upper surface of the adjusting arc plate (55) is gradually inclined upward along the rotation direction. The inclined surface of the adjusting arc plate (55) slides with the lower surface of the adjusting ring (734) at the bottom end. A plane is provided a distance away after the highest point of the inclination of the upper surface of the adjusting arc plate (55).

6. The post-processing device for silica sol investment casting of high-precision automotive castings according to claim 4, characterized in that: The adjustment mechanism (6) includes a support plate (63) fixedly connected to the upper surface of a rectangular base plate (53). On the side of the support plate (63) near the center of the hanger (51), a plurality of mounting seats (61) evenly distributed in the vertical direction are fixedly connected. An adjustment block (62) is elastically hinged to the mounting seat (61). The end of the adjustment block (62) near the center of the hanger (51) is set at a right angle and cooperates with the groove on the adjustment ring (734). The elastic force between the adjustment block (62) and the mounting seat (61) is greater than the static friction force between the casting and the support plate (733).

7. The post-processing device for silica sol investment casting of high-precision automotive castings according to claim 1, characterized in that: The drive unit (71) includes a transmission box (713) fixedly connected to the connecting shaft (72). A transmission shaft (712) is rotatably connected to the upper surface of the transmission box (713). A linkage shaft (714) is rotatably connected to the side of the transmission box (713) near the placement ring (732). A linkage gear (711) is fixedly connected to the top end of the transmission shaft (712).

8. The post-processing device for silica sol investment casting of high-precision automotive castings according to claim 7, characterized in that: The bottom end of the drive shaft (712) extends into the interior of the transmission box (713), and the end of the linkage shaft (714) away from the placement ring (732) extends into the interior of the transmission box (713) and is connected to the bottom end of the drive shaft (712) via a bevel gear transmission.

9. The post-processing device for silica sol investment casting of high-precision automotive castings according to claim 7, characterized in that: The limiting member (74) includes two driven gears (741) that are rotatably connected to the circumferential surface of the connecting shaft (72) and are distributed vertically at the positions corresponding to the linkage gear (711). The driven gears (741) mesh with their corresponding linkage gears (711). Each driven gear (741) has a bearing seat (742) fixedly connected to its upper surface. The bearing seat (742) is elastically hinged to a limiting pressure plate (743).

10. The post-processing device for silica sol investment casting of high-precision automotive castings according to claim 9, characterized in that: The bearing seat (742) is sleeved on the circumferential surface of the connecting shaft (72) and is rotatably connected to the connecting shaft (72). Under normal conditions, the limiting pressure plate (743) and the placement ring (732) are arranged parallel to each other and are offset from the top of their corresponding placement ring (732).

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