Molding machine casting equipment for manufacturing sand mold

Abstract

The invention relates to the technical field of casting equipment, and discloses molding machine casting equipment for manufacturing sand molds, which comprises a molding machine main body, a workbench arranged in the middle of the molding machine main body, a sand box arranged at the bottom of the molding machine main body, and a dredging mechanism arranged at the bottom of the workbench, the deflection mechanism is arranged in the dredging mechanism and is used for controlling the deflection direction of sand shooting; the dredging mechanism comprises a support arranged at the bottom of the workbench, a sliding way formed in the edge of the top of the support, a stepped hole formed in the bottom of the support, a limiting ring arranged in the middle of the stepped hole and located at the reducing position of the stepped hole, and a rotating cylinder arranged in the stepped hole, wherein the support provides support for the moving part, and the sliding way can contain the rotating part. And the rotary drum can rotate after being stressed. And by arranging the dredging mechanism, the blockage cleaning work is simplified, and targeted dredging treatment can be carried out on the sand shooting opening without disassembling equipment, so that the dredging process is more efficient.

Description

Technical Field

[0001] This invention relates to the field of casting equipment technology, and in particular to a molding machine casting equipment for manufacturing sand molds. Background Technology

[0002] Molding machines are core equipment in the foundry industry, primarily used for creating sand molds or metal cavities. They efficiently and precisely complete processes such as sand filling, compaction, and demolding, significantly improving production efficiency, reducing labor costs, and improving the working environment. Compared to manual molding, molding machines significantly improve the dimensional accuracy and surface quality of castings, ensuring product quality stability. Whether for mass production or manufacturing high-precision complex parts, molding machines are crucial, key to achieving large-scale, standardized, and high-quality production in the modern foundry industry, and strongly support the demand for castings across various sectors.

[0003] Traditional molding machines are widely used in the foundry industry, but due to limitations in their structure and working principle, they often have some unavoidable problems. Traditional molding machines have significant drawbacks in the sand injection stage. Their sand injection port design is often relatively simple, and during long-term use, it is very prone to clogging due to factors such as sand particles, impurities, or changes in moisture. Once clogged, cleaning and unblocking are extremely inconvenient, usually requiring machine shutdown and consuming a lot of time and manpower for disassembly and cleaning, seriously affecting production efficiency and continuity. Furthermore, traditional molding machines generally lack the ability to control the direction of the sand injection flow during the sand injection process. The sand injection often exhibits a single or uncontrollable bias, resulting in uneven distribution of sand within the mold cavity and difficulty in ensuring compaction. This limitation makes traditional equipment unsuitable for molding workpieces of varying shapes and complex structures, unable to accurately and uniformly fill specific parts of different workpieces with sand, limiting its application in the production of complex and precision castings, and also affecting the quality and consistency of the final castings. Summary of the Invention

[0004] In view of the problems of inconvenience in clearing the sand injection port of the molding machine and the inability to adjust the sand injection direction in the existing technology, a molding machine casting equipment for manufacturing sand molds is proposed.

[0005] Its purpose is to enable the molding machine to easily unclog the sand injection port and to adjust the deflection direction of the sand injection.

[0006] The technical solution of the present invention is a molding machine casting equipment for manufacturing sand molds, including a molding machine body, a worktable disposed in the middle of the molding machine body, a sand box disposed at the bottom of the molding machine body, a dredging mechanism disposed at the bottom of the worktable, and a deflection mechanism disposed inside the dredging mechanism for controlling the deflection direction of the sand shot. The unblocking mechanism includes a bracket at the bottom of the workbench, which provides support for the moving parts; a slide rail at the top edge of the bracket, which can accommodate the rotating parts; a stepped hole at the bottom of the bracket; a limiting ring in the middle of the stepped hole, which is located at the change of diameter of the stepped hole; a rotating cylinder inside the stepped hole, which can rotate under force; a ring plate near the bottom of the rotating cylinder; a tension spring at the bottom of the ring plate; a slip ring at the bottom of the tension spring, which connects the slip ring and the ring plate; the outer side of the slip ring is rotatably connected to the slide rail; a lifting pipe inside the rotating cylinder, which can rise and fall with the rotating cylinder; a scraper at the top of the lifting pipe, which can clean the inner wall of the rotating cylinder; and a drive unit in the middle of the rotating cylinder for driving the rotation.

[0007] Furthermore, the bottom end of the rotating drum is toothed, and the tooth shape matches the inner ring of the limiting ring, and a positioning ring is provided at the bottom of the scraper.

[0008] Furthermore, the lifting tube is symmetrically provided with sliding grooves on both sides, and sliders are symmetrically provided on both sides of the bottom of the stepped hole, and the sliders are slidably connected to the sliding grooves.

[0009] Furthermore, the drive unit includes a driven wheel disposed in the middle of the rotating drum, a support plate disposed at the bottom of the worktable, a bushing disposed at the bottom of the support plate, a return spring disposed inside the support plate, a pin disposed at the bottom of the return spring, a shaft hole opened in the bushing near the support plate, a pressure block disposed in the inner wall of the shaft hole, a knob disposed at the bottom of the pressure block, a horizontal shaft disposed inside the shaft hole, and a rack disposed in the horizontal shaft near the driven wheel.

[0010] Furthermore, the top of the bushing is provided with an insertion hole, and the side of the bushing near the driven wheel is also provided with an insertion hole.

[0011] Furthermore, the bottom of the bushing is provided with a screw hole, and the center of the knob is provided with a thread, and the knob is threadedly connected to the bushing.

[0012] Furthermore, the deflection mechanism includes a guide plate disposed on the top of the scraper, a rotating shaft disposed on the inner wall of the scraper, a drive wheel disposed on the bottom of the rotating shaft, a rubber ring disposed on the bottom of the scraper, and a toothed ring disposed on the inner wall of the top of the lifting tube, the toothed ring being meshed with the drive wheel.

[0013] Furthermore, the top of the scraper is provided with a through hole, and the rotating shaft is rotatably connected to the through hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a dredging mechanism, the blockage removal work that originally required a long time and a lot of effort is simplified. Operators can perform targeted dredging of the sand injection port without disassembling the equipment. This makes the dredging process more efficient, reduces downtime caused by blockages, and ensures that the molding machine can operate continuously and stably. With the dredging mechanism, the maintenance of the molding machine becomes easier and the difficulty of dredging work is reduced. This not only improves production efficiency but also reduces production losses caused by downtime, enabling the molding machine to better play its role in actual production and meet the needs of continuous production.

[0015] 2. By incorporating a drive unit, when the sand-jetting nozzle becomes clogged and requires unblocking, the operator simply pushes and pulls the horizontal axis. This simple action drives the unblocking mechanism to clear the blockage. No cumbersome steps or complex control devices are required, significantly reducing operational difficulty. The intuitive push-and-pull method allows operators to quickly and accurately complete the unblocking task. This design avoids the complex operations that may occur in traditional unblocking methods, reducing the possibility of operational errors. This improves the efficiency of the unblocking process, enabling the molding machine to return to normal operation more quickly.

[0016] 3. By setting up a deflection mechanism, the sand-filling function can be utilized when dealing with workpieces of different shapes and structures. The operator can adjust the direction of sand injection according to the specific shape of the workpiece and the requirements of the sand-filling area. Through the action of the deflection mechanism, the sand can be guided to a specific direction in the cavity, ensuring that the sand can be evenly and fully filled into all corners of the workpiece. This flexible control of the sand injection direction allows the molding machine to better adapt to diverse production tasks. Whether it is a simple standard part or a complex irregular part, it can meet the sand-filling requirements, thereby improving the quality and consistency of castings and broadening the application range of the molding machine in different casting production scenarios. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a schematic diagram showing the connection between the worktable and the main body of the molding machine according to the present invention; Figure 3 This is a schematic diagram showing the connection between the support and the workbench of the present invention; Figure 4 This is a schematic diagram of the overall structure of the unblocking mechanism of the present invention; Figure 5 This is a schematic diagram of the connection between the bracket and the rotating cylinder of the present invention; Figure 6 This is a schematic diagram of the internal structure of the support frame of the present invention; Figure 7 This is a schematic diagram showing the connection between the scraper and the rising pipe of the present invention; Figure 8 This is a schematic diagram of the rack and transverse shaft structure of the present invention; Figure 9 This is a schematic diagram of the connection between the support plate and the bushing of the present invention; Figure 10 This is a schematic diagram of the internal structure of the bushing of the present invention; Figure 11 This is a schematic diagram of the connection between the drive wheel and the gear ring of the present invention; Figure 12 This is a schematic diagram of the connection between the lifting tube and the gear ring of the present invention; Figure 13 This is a schematic diagram of the rotating shaft and drive wheel structure of the present invention; Figure 14 This is a schematic diagram of the connection between the rack and the driven wheel of the present invention.

[0018] In the picture: 1. Molding machine body; 2. Worktable; 3. Sand box; 4. Unblocking mechanism; 5. Deflection mechanism; 41. Support; 42. Slide rail; 43. Stepped hole; 44. Limiting ring; 45. Rotary drum; 46. Ring plate; 47. Tension spring; 48. Slip ring; 49. Lifting pipe; 410. Scraper; 411. Driven wheel; 412. Support plate; 413. Bushing; 414. Return spring; 415. Pin; 416. Shaft hole; 417. Pressure block; 418. Knob; 419. Horizontal shaft; 420. Rack; 51. Guide plate; 52. Rotating shaft; 53. Drive wheel; 54. Rubber ring; 55. Gear ring. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Example 1, referring to Figures 1-10This invention provides a molding machine casting equipment for manufacturing sand molds, comprising a molding machine body 1, a worktable 2 fixedly connected to the middle of the molding machine body 1, a sand box 3 fixedly connected to the bottom of the molding machine body 1, a dredging mechanism 4 installed at the bottom of the worktable 2, and a deflection mechanism 5 installed inside the dredging mechanism 4 for controlling the deflection direction of the sand injection; the dredging mechanism 4 includes a bracket 41 fixedly connected to the bottom of the worktable 2, the bracket 41 providing support for moving parts, a slide 42 opened at the top edge of the bracket 41, the slide 42 accommodating rotating parts, a stepped hole 43 opened at the bottom of the bracket 41, and a limiting ring 44 fixedly connected to the middle of the stepped hole 43. Position ring 44 is located at the variable diameter position of stepped hole 43, and is rotatably connected to the rotating cylinder 45 inside stepped hole 43. The rotating cylinder 45 can rotate after being subjected to force. Ring plate 46 is fixedly connected to the bottom of rotating cylinder 45. Tension spring 47 is fixedly connected to the bottom of ring plate 46. Slip ring 48 is fixedly connected to the bottom of tension spring 47. Tension spring 47 connects slip ring 48 and ring plate 46. The outer side of slip ring 48 is rotatably connected to slide rail 42. Lifting tube 49 is rotatably connected inside rotating cylinder 45. Lifting rod can rise and fall with rotating cylinder 45. Scraper 410 is fixedly connected to the top of lifting tube 49. Scraper 410 can clean the inner wall of rotating cylinder 45. And a drive unit is assembled in the middle of rotating cylinder 45 to drive rotation.

[0021] Specifically, the bracket 41 is connected to the worktable 2, and other moving parts provide support. The slide rail 42 can accommodate the slip ring 48 and the tension spring 47 inside, and the slip ring 48 has the freedom of rotation. The stepped hole 43 accommodates the rotating cylinder 45 and the lifting tube 49. After the limiting ring 44 is engaged with the bottom of the rotating cylinder 45, it will constrain the rotating cylinder 45, so that it loses the freedom of rotation. The tension spring 47 pulls the rotation downward through the ring plate 46, so that the bottom of the rotating cylinder 45 is engaged with the limiting ring 44. The slip ring 48 is constrained by the slide rail 42, so it can only rotate in place. Under the constraint of the bracket 41, the lifting tube 49 can only move up and down. When the rotating cylinder 45 moves up, it will drive the lifting tube 49 to move at the same time. When the scraper 410 and the rotating cylinder 45 rotate relative to each other, the edge of the scraper 410 will scrape off the attachments on the inner wall of the rotating cylinder 45. The sand box 3 is used to store the sand shooting raw materials for making sand molds.

[0022] Reference Figure 6 and Figure 7 The bottom end of the rotating drum 45 is toothed, and the tooth shape matches the inner ring of the limiting ring 44. A positioning ring is provided at the bottom of the scraper 410.

[0023] Specifically, the bottom of the rotating drum 45 can be inserted into the inside of the limiting ring 44. When the rotating drum 45 is inserted into the limiting ring 44, it will only have the freedom to move up and down.

[0024] Reference Figure 6 and Figure 7 The lifting tube 49 has symmetrical grooves on both sides, and the bottom of the stepped hole 43 has symmetrical sliders on both sides, and the sliders are slidably connected to the grooves.

[0025] Specifically, the bracket 41 constrains the lifting tube 49 through the sliding groove and the slider, so that the lifting tube 49 can only move up and down.

[0026] Reference Figures 1-10 The drive unit includes a driven wheel 411 fixedly connected to the middle of the rotating drum 45, a support plate 412 fixedly connected to the bottom of the worktable 2, a bushing 413 rotatably connected to the bottom of the support plate 412, a return spring 414 fixedly connected inside the support plate 412, a pin 415 fixedly connected to the bottom of the return spring 414, a shaft hole 416 opened on the side of the bushing 413 near the support plate 412, a pressure block 417 slidably connected to the inner wall of the shaft hole 416, a knob 418 rotatably connected to the bottom of the pressure block 417, a horizontal shaft 419 slidably connected inside the shaft hole 416, and a rack 420 fixedly connected to the end of the horizontal shaft 419 near the driven wheel 411.

[0027] Specifically, the support plate 412 is connected to the worktable 2, the bushing 413 provides a fixing point, and the return spring 414 keeps the pin 415 moving downwards. When the pin 415 is inserted into the insertion hole of the bushing 413, it will lock the bushing 413 so that it cannot rotate. The shaft hole 416 can accommodate the pressure block 417 and the horizontal shaft 419. By rotating the knob 418, the pressure block 417 can be raised and lowered. After the pressure block 417 is tightly fitted upwards with the horizontal shaft 419, the horizontal shaft 419 will not move. The horizontal shaft 419 can move along the shaft hole 416. 16 moves, and by rotating the bushing 413, the horizontal shaft 419 can be driven to rotate. The horizontal shaft 419 drives the rack 420 to rotate. When the rack 420 rotates to the point where the toothed side faces upward, it will lift the driven wheel 411, thereby causing the rotating drum 45 to rise. After the rotating drum 45 is released from the engagement with the limiting ring 44, it gains the freedom of rotation. When the toothed side of the rack 420 faces upward, it will mesh with the driven wheel 411. At this time, pushing or pulling the horizontal shaft 419 will drive the rotating drum 45 to rotate through the rack 420 and the driven wheel 411.

[0028] Reference Figure 4 and Figure 9 The top of the bushing 413 is provided with an insertion hole, and the side of the bushing 413 near the driven wheel 411 is also provided with an insertion hole.

[0029] Specifically, the bushing 413 engages with the pin 415 through different slots, allowing it and the rack 420 to maintain different rotation angles. When the tooth surface of the rack 420 faces upward, the rack 420 meshes with the driven wheel 411. When the tooth surface of the rack 420 faces the rotating cylinder 45, it disengages from the driven wheel 411.

[0030] Reference Figure 10 The bottom of the bushing 413 is provided with a screw hole, and the center of the knob 418 is provided with a thread, and the knob 418 is threadedly connected to the bushing 413.

[0031] Specifically, as the knob 418 rotates, it moves along its own axis under the action of the thread, and at the same time, it drives the pressure block 417 to move together.

[0032] Example 2, refer to Figures 1-14 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the deflection mechanism 5 includes a guide plate 51 fixedly connected to the top of the scraper 410, a rotating shaft 52 rotatably connected to the inner wall of the scraper 410, a drive wheel 53 fixedly connected to the bottom of the rotating shaft 52, a rubber ring 54 fixedly connected to the bottom of the scraper 410, and a toothed ring 55 fixedly connected to the top inner wall of the lifting tube 49. The toothed ring 55 is engaged with the drive wheel 53.

[0033] Specifically, the guide plate 51 can guide the sand sprayed from below, causing the direction of sand spraying to deflect. While the rotating shaft 52 rotates, it drives the drive wheel 53 to rotate at the same time. Since the drive wheel 53 meshes with the toothed ring 55, it will revolve around the inner ring of the toothed ring 55 after rotation, and drive the scraper 410 to move and rotate at the same time. The rubber ring 54 can prevent foreign objects from entering the connection between the toothed ring 55 and the drive wheel 53, and increase the friction between the scraper 410 and the lifting tube 49.

[0034] Reference Figures 7-11 The top of the scraper 410 has a through hole, and the rotating shaft 52 is rotatably connected to the through hole.

[0035] Specifically, the scraper 410 and the rotating shaft 52 are connected by a through hole, and the rotating shaft 52 can transmit the force to the scraper 410. The rest of the structure is the same as that of Embodiment 1.

[0036] Based on embodiments 1-2, the working principle of this invention is as follows: When the rotating drum 45 is blocked, the constraint of the pin 415 on the bushing 413 is released, and then the bushing 413 is rotated to drive the rack 420 to rotate. The toothed side of the rack 420 rotates towards the driven wheel 411 until the toothed side faces upwards. During this process, the bottom of the rack 420 will contact the driven wheel 411 and rise, eventually meshing with it. The driven wheel 411 drives the rotating drum 45 upwards and contacts its engagement with the limiting ring 44. At this time, the knob 418 is rotated to move it away from the horizontal axis 419, releasing the constraint on the horizontal axis 419. Then, by pushing and pulling the horizontal axis 419, the rack 420 reciprocates. While moving, the rack 420 drives the rotating drum 45 to rotate via the driven wheel 411. At this time, relative rotation occurs between the inner wall of the rotating drum 45 and the scraper 410, thus removing the blockage. Foreign objects causing blockage on the inner wall of the rotating drum 45 will be scraped off by the scraper 410. After unblocking, the bushing 413 is rotated in the opposite direction to disengage the rack 420 from the driven wheel 411, and the pin 415 fixes the bushing 413. Then, the knob 418 is rotated to push the pressure block 417, which fixes the horizontal shaft 419. After the rotating drum 45 loses the support of the rack 420, it will move downward under the action of the tension spring 47 until it engages with the limit ring 44 and is thus fixed. When it is necessary to adjust the deflection direction of the sandblasting, the rotating shaft 52 is rotated to drive the driving wheel 53 to rotate. Under the meshing action with the toothed ring 55, the driving wheel 53 will rotate on its own axis and revolve around the inside of the toothed ring 55. The driving wheel 53 will drive the scraper 410 to rotate through the rotating shaft 52. The rotation of the scraper 410 will drive the guide plate 51 to rotate. After the guide plate 51 rotates, it will guide the sandblasting direction to different positions.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A molding machine casting equipment for manufacturing sand molds, comprising a molding machine body (1), a worktable (2) disposed in the middle of the molding machine body (1), and a sand box (3) disposed at the bottom of the molding machine body (1), characterized in that: It also includes a dredging mechanism (4) located at the bottom of the workbench (2), and a deflection mechanism (5) located inside the dredging mechanism (4) for controlling the direction of sand-shooting deflection; the dredging mechanism (4) includes a support (41) located at the bottom of the workbench (2), the support (41) providing support for the moving parts, a slide (42) opened at the top edge of the support (41), the slide (42) accommodating the rotating parts, a stepped hole (43) opened at the bottom of the support (41), a limiting ring (44) located in the middle of the stepped hole (43), the limiting ring (44) being at the position where the stepped hole (43) changes diameter, and a rotating cylinder (45) located inside the stepped hole (43). (45) A ring plate (46) is set near the bottom of the rotating drum (45), a tension spring (47) is set at the bottom of the ring plate (46), a slip ring (48) is set at the bottom of the tension spring (47), the tension spring (47) connects the slip ring (48) and the ring plate (46), the outer side of the slip ring (48) is rotatably connected to the slide rail (42), a lifting tube (49) is set inside the rotating drum (45), the lifting rod can rise and fall with the rotating drum (45), a scraper (410) is set at the top of the lifting tube (49), the scraper (410) can clean the inner wall of the rotating drum (45), and a drive unit is set in the middle of the rotating drum (45) to drive the rotation.

2. The molding machine casting equipment for manufacturing sand molds according to claim 1, characterized in that: The bottom end of the rotating drum (45) is toothed, and the toothed shape matches the inner ring of the limiting ring (44). A positioning ring is provided at the bottom of the scraper (410).

3. The molding machine casting equipment for manufacturing sand molds according to claim 1, characterized in that: The lifting tube (49) has symmetrical grooves on both sides, and the bottom of the stepped hole (43) has symmetrical sliders on both sides, and the sliders are slidably connected to the grooves.

4. The molding machine casting equipment for manufacturing sand molds according to claim 1, characterized in that: The drive unit includes a driven wheel (411) located in the middle of the rotating drum (45), a support plate (412) located at the bottom of the worktable (2), a bushing (413) located at the bottom of the support plate (412), a return spring (414) located inside the support plate (412), a pin (415) located at the bottom of the return spring (414), a shaft hole (416) located on the side of the bushing (413) near the support plate (412), a pressure block (417) located on the inner wall of the shaft hole (416), a knob (418) located at the bottom of the pressure block (417), a horizontal shaft (419) located inside the shaft hole (416), and a rack (420) located on the side of the horizontal shaft (419) near the driven wheel (411).

5. The molding machine casting equipment for manufacturing sand molds according to claim 4, characterized in that: The top of the bushing (413) is provided with an insertion hole, and the side of the bushing (413) near the driven wheel (411) is also provided with an insertion hole.

6. The molding machine casting equipment for manufacturing sand molds according to claim 4, characterized in that: The bottom of the bushing (413) is provided with a screw hole, and the middle of the knob (418) is provided with a thread, and the knob (418) is threadedly connected to the bushing (413).

7. The molding machine casting equipment for manufacturing sand molds according to claim 1, characterized in that: The deflection mechanism (5) includes a guide plate (51) disposed on the top of the scraper (410), a rotating shaft (52) disposed on the inner wall of the scraper (410), a drive wheel (53) disposed on the bottom of the rotating shaft (52), a rubber ring (54) disposed on the bottom of the scraper (410), and a toothed ring (55) disposed on the inner wall of the top of the lifting tube (49). The toothed ring (55) is engaged with the drive wheel (53).

8. The molding machine casting equipment for manufacturing sand molds according to claim 7, characterized in that: The top of the scraper (410) is provided with a through hole, and the rotating shaft (52) is rotatably connected to the through hole.

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